diff options
Diffstat (limited to 'arch')
281 files changed, 3605 insertions, 2812 deletions
diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h index 89ad0596033a..9e81b7c498d8 100644 --- a/arch/arm/include/asm/module.h +++ b/arch/arm/include/asm/module.h @@ -34,6 +34,7 @@ struct mod_arch_specific { #endif }; +struct module; u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val); /* diff --git a/arch/arm64/kernel/jump_label.c b/arch/arm64/kernel/jump_label.c index c2dd1ad3e648..e0756416e567 100644 --- a/arch/arm64/kernel/jump_label.c +++ b/arch/arm64/kernel/jump_label.c @@ -36,7 +36,7 @@ void arch_jump_label_transform(struct jump_entry *entry, insn = aarch64_insn_gen_nop(); } - aarch64_insn_patch_text(&addr, &insn, 1); + aarch64_insn_patch_text_nosync(addr, insn); } void arch_jump_label_transform_static(struct jump_entry *entry, diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 9abf8a1e7b25..787e27964ab9 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -287,7 +287,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) #ifdef CONFIG_HAVE_ARCH_PFN_VALID int pfn_valid(unsigned long pfn) { - return memblock_is_map_memory(pfn << PAGE_SHIFT); + phys_addr_t addr = pfn << PAGE_SHIFT; + + if ((addr >> PAGE_SHIFT) != pfn) + return 0; + return memblock_is_map_memory(addr); } EXPORT_SYMBOL(pfn_valid); #endif diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig index 930cc2965a11..c717bf879449 100644 --- a/arch/m68k/configs/mac_defconfig +++ b/arch/m68k/configs/mac_defconfig @@ -366,7 +366,7 @@ CONFIG_TCM_PSCSI=m CONFIG_ADB=y CONFIG_ADB_MACII=y CONFIG_ADB_IOP=y -CONFIG_ADB_PMU68K=y +CONFIG_ADB_PMU=y CONFIG_ADB_CUDA=y CONFIG_INPUT_ADBHID=y CONFIG_MAC_EMUMOUSEBTN=y diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig index e7dd25300127..226c994ce794 100644 --- a/arch/m68k/configs/multi_defconfig +++ b/arch/m68k/configs/multi_defconfig @@ -400,7 +400,7 @@ CONFIG_TCM_PSCSI=m CONFIG_ADB=y CONFIG_ADB_MACII=y CONFIG_ADB_IOP=y -CONFIG_ADB_PMU68K=y +CONFIG_ADB_PMU=y CONFIG_ADB_CUDA=y CONFIG_INPUT_ADBHID=y CONFIG_MAC_EMUMOUSEBTN=y diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c index b02d7254b73a..cd9317d53276 100644 --- a/arch/m68k/mac/config.c +++ b/arch/m68k/mac/config.c @@ -889,7 +889,7 @@ static void __init mac_identify(void) #ifdef CONFIG_ADB_CUDA find_via_cuda(); #endif -#ifdef CONFIG_ADB_PMU68K +#ifdef CONFIG_ADB_PMU find_via_pmu(); #endif } diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c index 19e9d8eef1f2..3534aa6a4dc2 100644 --- a/arch/m68k/mac/misc.c +++ b/arch/m68k/mac/misc.c @@ -90,7 +90,7 @@ static void cuda_write_pram(int offset, __u8 data) } #endif /* CONFIG_ADB_CUDA */ -#ifdef CONFIG_ADB_PMU68K +#ifdef CONFIG_ADB_PMU static time64_t pmu_read_time(void) { struct adb_request req; @@ -142,7 +142,7 @@ static void pmu_write_pram(int offset, __u8 data) while (!req.complete) pmu_poll(); } -#endif /* CONFIG_ADB_PMU68K */ +#endif /* CONFIG_ADB_PMU */ /* * VIA PRAM/RTC access routines @@ -373,38 +373,6 @@ static void cuda_shutdown(void) } #endif /* CONFIG_ADB_CUDA */ -#ifdef CONFIG_ADB_PMU68K - -void pmu_restart(void) -{ - struct adb_request req; - if (pmu_request(&req, NULL, - 2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0) - return; - while (!req.complete) - pmu_poll(); - if (pmu_request(&req, NULL, 1, PMU_RESET) < 0) - return; - while (!req.complete) - pmu_poll(); -} - -void pmu_shutdown(void) -{ - struct adb_request req; - if (pmu_request(&req, NULL, - 2, PMU_SET_INTR_MASK, PMU_INT_ADB|PMU_INT_TICK) < 0) - return; - while (!req.complete) - pmu_poll(); - if (pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 'M', 'A', 'T', 'T') < 0) - return; - while (!req.complete) - pmu_poll(); -} - -#endif - /* *------------------------------------------------------------------- * Below this point are the generic routines; they'll dispatch to the @@ -429,7 +397,7 @@ void mac_pram_read(int offset, __u8 *buffer, int len) func = cuda_read_pram; break; #endif -#ifdef CONFIG_ADB_PMU68K +#ifdef CONFIG_ADB_PMU case MAC_ADB_PB2: func = pmu_read_pram; break; @@ -459,7 +427,7 @@ void mac_pram_write(int offset, __u8 *buffer, int len) func = cuda_write_pram; break; #endif -#ifdef CONFIG_ADB_PMU68K +#ifdef CONFIG_ADB_PMU case MAC_ADB_PB2: func = pmu_write_pram; break; @@ -483,9 +451,8 @@ void mac_poweroff(void) macintosh_config->adb_type == MAC_ADB_CUDA) { cuda_shutdown(); #endif -#ifdef CONFIG_ADB_PMU68K - } else if (macintosh_config->adb_type == MAC_ADB_PB1 - || macintosh_config->adb_type == MAC_ADB_PB2) { +#ifdef CONFIG_ADB_PMU + } else if (macintosh_config->adb_type == MAC_ADB_PB2) { pmu_shutdown(); #endif } @@ -525,9 +492,8 @@ void mac_reset(void) macintosh_config->adb_type == MAC_ADB_CUDA) { cuda_restart(); #endif -#ifdef CONFIG_ADB_PMU68K - } else if (macintosh_config->adb_type == MAC_ADB_PB1 - || macintosh_config->adb_type == MAC_ADB_PB2) { +#ifdef CONFIG_ADB_PMU + } else if (macintosh_config->adb_type == MAC_ADB_PB2) { pmu_restart(); #endif } else if (CPU_IS_030) { @@ -680,7 +646,7 @@ int mac_hwclk(int op, struct rtc_time *t) now = cuda_read_time(); break; #endif -#ifdef CONFIG_ADB_PMU68K +#ifdef CONFIG_ADB_PMU case MAC_ADB_PB2: now = pmu_read_time(); break; @@ -716,7 +682,7 @@ int mac_hwclk(int op, struct rtc_time *t) cuda_write_time(now); break; #endif -#ifdef CONFIG_ADB_PMU68K +#ifdef CONFIG_ADB_PMU case MAC_ADB_PB2: pmu_write_time(now); break; diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 1c10ff0406f2..a80669209155 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -165,7 +165,7 @@ config PPC select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE - select GENERIC_CPU_VULNERABILITIES if PPC_BOOK3S_64 + select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL select GENERIC_SMP_IDLE_THREAD @@ -197,6 +197,7 @@ config PPC select HAVE_IOREMAP_PROT select HAVE_IRQ_EXIT_ON_IRQ_STACK select HAVE_KERNEL_GZIP + select HAVE_KERNEL_XZ if PPC_BOOK3S select HAVE_KPROBES select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES @@ -225,6 +226,7 @@ config PPC select IRQ_DOMAIN select IRQ_FORCED_THREADING select MODULES_USE_ELF_RELA + select NEED_DMA_MAP_STATE if PPC64 || NOT_COHERENT_CACHE select NEED_SG_DMA_LENGTH select NO_BOOTMEM select OF @@ -240,6 +242,11 @@ config PPC # Please keep this list sorted alphabetically. # +config PPC_BARRIER_NOSPEC + bool + default y + depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E + config GENERIC_CSUM def_bool n @@ -876,9 +883,6 @@ config ZONE_DMA bool default y -config NEED_DMA_MAP_STATE - def_bool (PPC64 || NOT_COHERENT_CACHE) - config GENERIC_ISA_DMA bool depends on ISA_DMA_API diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index fb96206de317..8397c7bd5880 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -36,7 +36,7 @@ else KBUILD_DEFCONFIG := ppc64_defconfig endif -ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_PPC64 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) ifeq ($(new_nm),y) @@ -74,7 +74,7 @@ KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o endif endif -ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +ifdef CONFIG_CPU_LITTLE_ENDIAN KBUILD_CFLAGS += -mlittle-endian LDFLAGS += -EL LDEMULATION := lppc @@ -117,7 +117,7 @@ LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) LDFLAGS_vmlinux += $(call ld-option,--orphan-handling=warn) -ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_PPC64 ifeq ($(call cc-option-yn,-mcmodel=medium),y) # -mcmodel=medium breaks modules because it uses 32bit offsets from # the TOC pointer to create pointers where possible. Pointers into the @@ -134,7 +134,7 @@ endif endif CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no) -ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +ifdef CONFIG_CPU_LITTLE_ENDIAN CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) else @@ -148,8 +148,8 @@ CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata) -ifeq ($(CONFIG_PPC_BOOK3S_64),y) -ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +ifdef CONFIG_PPC_BOOK3S_64 +ifdef CONFIG_CPU_LITTLE_ENDIAN CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8 CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8) else @@ -164,16 +164,10 @@ ifdef CONFIG_MPROFILE_KERNEL CC_FLAGS_FTRACE := -pg -mprofile-kernel endif -CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) -CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) -CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) -CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) -CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8) -CFLAGS-$(CONFIG_POWER9_CPU) += $(call cc-option,-mcpu=power9) -CFLAGS-$(CONFIG_PPC_8xx) += $(call cc-option,-mcpu=860) +CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU)) # Altivec option not allowed with e500mc64 in GCC. -ifeq ($(CONFIG_ALTIVEC),y) +ifdef CONFIG_ALTIVEC E5500_CPU := -mcpu=powerpc64 else E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64) @@ -181,8 +175,8 @@ endif CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU) CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU)) -ifeq ($(CONFIG_PPC32),y) -ifeq ($(CONFIG_PPC_E500MC),y) +ifdef CONFIG_PPC32 +ifdef CONFIG_PPC_E500MC CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc) else CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc) @@ -204,7 +198,7 @@ else CHECKFLAGS += -D__LITTLE_ENDIAN__ endif -ifeq ($(CONFIG_476FPE_ERR46),y) +ifdef CONFIG_476FPE_ERR46 KBUILD_LDFLAGS_MODULE += --ppc476-workaround \ -T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds endif @@ -231,12 +225,12 @@ KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) # often slow when they are implemented at all KBUILD_CFLAGS += $(call cc-option,-mno-string) -ifeq ($(CONFIG_6xx),y) +ifdef CONFIG_6xx KBUILD_CFLAGS += -mcpu=powerpc endif # Work around a gcc code-gen bug with -fno-omit-frame-pointer. -ifeq ($(CONFIG_FUNCTION_TRACER),y) +ifdef CONFIG_FUNCTION_TRACER KBUILD_CFLAGS += -mno-sched-epilog endif @@ -355,6 +349,21 @@ mpc86xx_smp_defconfig: $(call merge_into_defconfig,mpc86xx_basic_defconfig,\ 86xx-smp 86xx-hw fsl-emb-nonhw) +PHONY += ppc32_allmodconfig +ppc32_allmodconfig: + $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \ + -f $(srctree)/Makefile allmodconfig + +PHONY += ppc64le_allmodconfig +ppc64le_allmodconfig: + $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/le.config \ + -f $(srctree)/Makefile allmodconfig + +PHONY += ppc64_book3e_allmodconfig +ppc64_book3e_allmodconfig: + $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \ + -f $(srctree)/Makefile allmodconfig + define archhelp @echo '* zImage - Build default images selected by kernel config' @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' @@ -381,7 +390,7 @@ install: $(Q)$(MAKE) $(build)=$(boot) install vdso_install: -ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_PPC64 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ endif $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index deea20c334df..0fb96c26136f 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -354,7 +354,7 @@ image-$(CONFIG_AMIGAONE) += cuImage.amigaone # For 32-bit powermacs, build the COFF and miboot images # as well as the ELF images. -ifeq ($(CONFIG_PPC32),y) +ifdef CONFIG_PPC32 image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot endif diff --git a/arch/powerpc/boot/dts/ac14xx.dts b/arch/powerpc/boot/dts/ac14xx.dts index 83bcfd865167..0be5c4f3265d 100644 --- a/arch/powerpc/boot/dts/ac14xx.dts +++ b/arch/powerpc/boot/dts/ac14xx.dts @@ -176,12 +176,12 @@ clock-frequency = <400000>; at24@30 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x30>; }; at24@31 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x31>; }; @@ -191,42 +191,42 @@ }; at24@50 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x50>; }; at24@51 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x51>; }; at24@52 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x52>; }; at24@53 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x53>; }; at24@54 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x54>; }; at24@55 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x55>; }; at24@56 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x56>; }; at24@57 { - compatible = "at24,24c01"; + compatible = "atmel,24c01"; reg = <0x57>; }; diff --git a/arch/powerpc/boot/dts/fsl/kmcent2.dts b/arch/powerpc/boot/dts/fsl/kmcent2.dts index 5922c1ea0e96..3094df05f5ea 100644 --- a/arch/powerpc/boot/dts/fsl/kmcent2.dts +++ b/arch/powerpc/boot/dts/fsl/kmcent2.dts @@ -130,7 +130,7 @@ #size-cells = <0>; eeprom@54 { - compatible = "24c02"; + compatible = "atmel,24c02"; reg = <0x54>; pagesize = <2>; read-only; diff --git a/arch/powerpc/boot/dts/fsl/t2080rdb.dts b/arch/powerpc/boot/dts/fsl/t2080rdb.dts index 836e4c965b22..55c0210a771d 100644 --- a/arch/powerpc/boot/dts/fsl/t2080rdb.dts +++ b/arch/powerpc/boot/dts/fsl/t2080rdb.dts @@ -97,12 +97,12 @@ mdio@fd000 { xg_cs4315_phy1: ethernet-phy@c { - compatible = "ethernet-phy-ieee802.3-c45"; + compatible = "ethernet-phy-id13e5.1002"; reg = <0xc>; }; xg_cs4315_phy2: ethernet-phy@d { - compatible = "ethernet-phy-ieee802.3-c45"; + compatible = "ethernet-phy-id13e5.1002"; reg = <0xd>; }; diff --git a/arch/powerpc/boot/dts/fsl/t4240rdb.dts b/arch/powerpc/boot/dts/fsl/t4240rdb.dts index 15eb0a3f7290..a56a705d41f7 100644 --- a/arch/powerpc/boot/dts/fsl/t4240rdb.dts +++ b/arch/powerpc/boot/dts/fsl/t4240rdb.dts @@ -267,22 +267,22 @@ mdio@fd000 { xfiphy1: ethernet-phy@10 { - compatible = "ethernet-phy-ieee802.3-c45"; + compatible = "ethernet-phy-id13e5.1002"; reg = <0x10>; }; xfiphy2: ethernet-phy@11 { - compatible = "ethernet-phy-ieee802.3-c45"; + compatible = "ethernet-phy-id13e5.1002"; reg = <0x11>; }; xfiphy3: ethernet-phy@13 { - compatible = "ethernet-phy-ieee802.3-c45"; + compatible = "ethernet-phy-id13e5.1002"; reg = <0x13>; }; xfiphy4: ethernet-phy@12 { - compatible = "ethernet-phy-ieee802.3-c45"; + compatible = "ethernet-phy-id13e5.1002"; reg = <0x12>; }; }; diff --git a/arch/powerpc/boot/dts/pdm360ng.dts b/arch/powerpc/boot/dts/pdm360ng.dts index 445b88114009..df1283b63d9b 100644 --- a/arch/powerpc/boot/dts/pdm360ng.dts +++ b/arch/powerpc/boot/dts/pdm360ng.dts @@ -98,7 +98,7 @@ fsl,preserve-clocking; eeprom@50 { - compatible = "at,24c01"; + compatible = "atmel,24c01"; reg = <0x50>; }; diff --git a/arch/powerpc/configs/book3s_32.config b/arch/powerpc/configs/book3s_32.config new file mode 100644 index 000000000000..8721eb7b1294 --- /dev/null +++ b/arch/powerpc/configs/book3s_32.config @@ -0,0 +1,2 @@ +CONFIG_PPC64=n +CONFIG_PPC_BOOK3S_32=y diff --git a/arch/powerpc/configs/dpaa.config b/arch/powerpc/configs/dpaa.config index 2fe76f5e938a..4ffacafe4036 100644 --- a/arch/powerpc/configs/dpaa.config +++ b/arch/powerpc/configs/dpaa.config @@ -2,3 +2,4 @@ CONFIG_FSL_DPAA=y CONFIG_FSL_PAMU=y CONFIG_FSL_FMAN=y CONFIG_FSL_DPAA_ETH=y +CONFIG_CORTINA_PHY=y diff --git a/arch/powerpc/crypto/md5-asm.S b/arch/powerpc/crypto/md5-asm.S index 10cdf5bceebb..1834065362c7 100644 --- a/arch/powerpc/crypto/md5-asm.S +++ b/arch/powerpc/crypto/md5-asm.S @@ -11,6 +11,7 @@ */ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> +#include <asm/asm-compat.h> #define rHP r3 #define rWP r4 diff --git a/arch/powerpc/crypto/sha1-powerpc-asm.S b/arch/powerpc/crypto/sha1-powerpc-asm.S index c8951ce0dcc4..23e248beff71 100644 --- a/arch/powerpc/crypto/sha1-powerpc-asm.S +++ b/arch/powerpc/crypto/sha1-powerpc-asm.S @@ -7,6 +7,7 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> +#include <asm/asm-compat.h> #ifdef __BIG_ENDIAN__ #define LWZ(rt, d, ra) \ diff --git a/arch/powerpc/include/asm/asm-405.h b/arch/powerpc/include/asm/asm-405.h new file mode 100644 index 000000000000..7270d3ae7c8e --- /dev/null +++ b/arch/powerpc/include/asm/asm-405.h @@ -0,0 +1,19 @@ +#ifndef _ASM_POWERPC_ASM_405_H +#define _ASM_POWERPC_ASM_405_H + +#include <asm/asm-const.h> + +#ifdef __KERNEL__ +#ifdef CONFIG_IBM405_ERR77 +/* Erratum #77 on the 405 means we need a sync or dcbt before every + * stwcx. The old ATOMIC_SYNC_FIX covered some but not all of this. + */ +#define PPC405_ERR77(ra,rb) stringify_in_c(dcbt ra, rb;) +#define PPC405_ERR77_SYNC stringify_in_c(sync;) +#else +#define PPC405_ERR77(ra,rb) +#define PPC405_ERR77_SYNC +#endif +#endif + +#endif /* _ASM_POWERPC_ASM_405_H */ diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h index 7f2a7702596c..19b70c5b5f18 100644 --- a/arch/powerpc/include/asm/asm-compat.h +++ b/arch/powerpc/include/asm/asm-compat.h @@ -1,21 +1,10 @@ #ifndef _ASM_POWERPC_ASM_COMPAT_H #define _ASM_POWERPC_ASM_COMPAT_H +#include <asm/asm-const.h> #include <asm/types.h> #include <asm/ppc-opcode.h> -#ifdef __ASSEMBLY__ -# define stringify_in_c(...) __VA_ARGS__ -# define ASM_CONST(x) x -#else -/* This version of stringify will deal with commas... */ -# define __stringify_in_c(...) #__VA_ARGS__ -# define stringify_in_c(...) __stringify_in_c(__VA_ARGS__) " " -# define __ASM_CONST(x) x##UL -# define ASM_CONST(x) __ASM_CONST(x) -#endif - - #ifdef __powerpc64__ /* operations for longs and pointers */ @@ -70,17 +59,4 @@ #endif -#ifdef __KERNEL__ -#ifdef CONFIG_IBM405_ERR77 -/* Erratum #77 on the 405 means we need a sync or dcbt before every - * stwcx. The old ATOMIC_SYNC_FIX covered some but not all of this. - */ -#define PPC405_ERR77(ra,rb) stringify_in_c(dcbt ra, rb;) -#define PPC405_ERR77_SYNC stringify_in_c(sync;) -#else -#define PPC405_ERR77(ra,rb) -#define PPC405_ERR77_SYNC -#endif -#endif - #endif /* _ASM_POWERPC_ASM_COMPAT_H */ diff --git a/arch/powerpc/include/asm/asm-const.h b/arch/powerpc/include/asm/asm-const.h new file mode 100644 index 000000000000..082c1538c562 --- /dev/null +++ b/arch/powerpc/include/asm/asm-const.h @@ -0,0 +1,14 @@ +#ifndef _ASM_POWERPC_ASM_CONST_H +#define _ASM_POWERPC_ASM_CONST_H + +#ifdef __ASSEMBLY__ +# define stringify_in_c(...) __VA_ARGS__ +# define ASM_CONST(x) x +#else +/* This version of stringify will deal with commas... */ +# define __stringify_in_c(...) #__VA_ARGS__ +# define stringify_in_c(...) __stringify_in_c(__VA_ARGS__) " " +# define __ASM_CONST(x) x##UL +# define ASM_CONST(x) __ASM_CONST(x) +#endif +#endif /* _ASM_POWERPC_ASM_CONST_H */ diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h index 7841b8a60657..1f4691ce4126 100644 --- a/arch/powerpc/include/asm/asm-prototypes.h +++ b/arch/powerpc/include/asm/asm-prototypes.h @@ -48,8 +48,8 @@ void __trace_opal_exit(long opcode, unsigned long retval); /* VMX copying */ int enter_vmx_usercopy(void); int exit_vmx_usercopy(void); -int enter_vmx_copy(void); -void * exit_vmx_copy(void *dest); +int enter_vmx_ops(void); +void *exit_vmx_ops(void *dest); /* Traps */ long machine_check_early(struct pt_regs *regs); @@ -143,4 +143,11 @@ struct kvm_vcpu; void _kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr); void _kvmppc_save_tm_pr(struct kvm_vcpu *vcpu, u64 guest_msr); +/* Patch sites */ +extern s32 patch__call_flush_count_cache; +extern s32 patch__flush_count_cache_return; +extern s32 patch__memset_nocache, patch__memcpy_nocache; + +extern long flush_count_cache; + #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */ diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h index 963abf8bf1c0..52eafaf74054 100644 --- a/arch/powerpc/include/asm/atomic.h +++ b/arch/powerpc/include/asm/atomic.h @@ -10,6 +10,7 @@ #include <linux/types.h> #include <asm/cmpxchg.h> #include <asm/barrier.h> +#include <asm/asm-405.h> #define ATOMIC_INIT(i) { (i) } diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h index f67b3f6e36be..fbe8df433019 100644 --- a/arch/powerpc/include/asm/barrier.h +++ b/arch/powerpc/include/asm/barrier.h @@ -5,6 +5,8 @@ #ifndef _ASM_POWERPC_BARRIER_H #define _ASM_POWERPC_BARRIER_H +#include <asm/asm-const.h> + /* * Memory barrier. * The sync instruction guarantees that all memory accesses initiated @@ -77,19 +79,25 @@ do { \ }) #ifdef CONFIG_PPC_BOOK3S_64 +#define NOSPEC_BARRIER_SLOT nop +#elif defined(CONFIG_PPC_FSL_BOOK3E) +#define NOSPEC_BARRIER_SLOT nop; nop +#endif + +#ifdef CONFIG_PPC_BARRIER_NOSPEC /* * Prevent execution of subsequent instructions until preceding branches have * been fully resolved and are no longer executing speculatively. */ -#define barrier_nospec_asm NOSPEC_BARRIER_FIXUP_SECTION; nop +#define barrier_nospec_asm NOSPEC_BARRIER_FIXUP_SECTION; NOSPEC_BARRIER_SLOT // This also acts as a compiler barrier due to the memory clobber. #define barrier_nospec() asm (stringify_in_c(barrier_nospec_asm) ::: "memory") -#else /* !CONFIG_PPC_BOOK3S_64 */ +#else /* !CONFIG_PPC_BARRIER_NOSPEC */ #define barrier_nospec_asm #define barrier_nospec() -#endif +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ #include <asm-generic/barrier.h> diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index b750ffef83c7..ff71566dadee 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -45,6 +45,7 @@ #include <linux/compiler.h> #include <asm/asm-compat.h> #include <asm/synch.h> +#include <asm/asm-405.h> /* PPC bit number conversion */ #define PPC_BITLSHIFT(be) (BITS_PER_LONG - 1 - (be)) diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 02f5acd7ccc4..751cf931bb3f 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -84,17 +84,12 @@ * of RAM. -- Cort */ #define VMALLOC_OFFSET (0x1000000) /* 16M */ -#ifdef PPC_PIN_SIZE -#define VMALLOC_START (((_ALIGN((long)high_memory, PPC_PIN_SIZE) + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))) -#else #define VMALLOC_START ((((long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))) -#endif #define VMALLOC_END ioremap_bot #ifndef __ASSEMBLY__ #include <linux/sched.h> #include <linux/threads.h> -#include <asm/io.h> /* For sub-arch specific PPC_PIN_SIZE */ extern unsigned long ioremap_bot; @@ -164,7 +159,6 @@ static inline unsigned long pte_update(pte_t *p, 1: lwarx %0,0,%3\n\ andc %1,%0,%4\n\ or %1,%1,%5\n" - PPC405_ERR77(0,%3) " stwcx. %1,0,%3\n\ bne- 1b" : "=&r" (old), "=&r" (tmp), "=m" (*p) @@ -186,7 +180,6 @@ static inline unsigned long long pte_update(pte_t *p, lwzx %0,0,%3\n\ andc %1,%L0,%5\n\ or %1,%1,%6\n" - PPC405_ERR77(0,%3) " stwcx. %1,0,%4\n\ bne- 1b" : "=&r" (old), "=&r" (tmp), "=m" (*p) diff --git a/arch/powerpc/include/asm/book3s/32/tlbflush.h b/arch/powerpc/include/asm/book3s/32/tlbflush.h new file mode 100644 index 000000000000..068085b709fb --- /dev/null +++ b/arch/powerpc/include/asm/book3s/32/tlbflush.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H +#define _ASM_POWERPC_BOOK3S_32_TLBFLUSH_H + +#define MMU_NO_CONTEXT (0) +/* + * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx + */ +extern void flush_tlb_mm(struct mm_struct *mm); +extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr); +extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end); +extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); +static inline void local_flush_tlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + flush_tlb_page(vma, vmaddr); +} +static inline void local_flush_tlb_mm(struct mm_struct *mm) +{ + flush_tlb_mm(mm); +} + +#endif /* _ASM_POWERPC_TLBFLUSH_H */ diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h index c81793d47af9..f82ee8a3b561 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -137,10 +137,9 @@ extern bool __rpte_sub_valid(real_pte_t rpte, unsigned long index); shift = mmu_psize_defs[psize].shift; \ for (index = 0; vpn < __end; index++, \ vpn += (1L << (shift - VPN_SHIFT))) { \ - if (!__split || __rpte_sub_valid(rpte, index)) \ - do { + if (!__split || __rpte_sub_valid(rpte, index)) -#define pte_iterate_hashed_end() } while(0); } } while(0) +#define pte_iterate_hashed_end() } } while(0) #define pte_pagesize_index(mm, addr, pte) \ (((pte) & H_PAGE_COMBO)? MMU_PAGE_4K: MMU_PAGE_64K) diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index 0387b155f13d..d52a51b2ce7b 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -3,6 +3,8 @@ #define _ASM_POWERPC_BOOK3S_64_HASH_H #ifdef __KERNEL__ +#include <asm/asm-const.h> + /* * Common bits between 4K and 64K pages in a linux-style PTE. * Additional bits may be defined in pgtable-hash64-*.h diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb.h b/arch/powerpc/include/asm/book3s/64/hugetlb.h index c459f937d484..50888388a359 100644 --- a/arch/powerpc/include/asm/book3s/64/hugetlb.h +++ b/arch/powerpc/include/asm/book3s/64/hugetlb.h @@ -32,26 +32,6 @@ static inline int hstate_get_psize(struct hstate *hstate) } } -#define arch_make_huge_pte arch_make_huge_pte -static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, - struct page *page, int writable) -{ - unsigned long page_shift; - - if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) - return entry; - - page_shift = huge_page_shift(hstate_vma(vma)); - /* - * We don't support 1G hugetlb pages yet. - */ - VM_WARN_ON(page_shift == mmu_psize_defs[MMU_PAGE_1G].shift); - if (page_shift == mmu_psize_defs[MMU_PAGE_2M].shift) - return __pte(pte_val(entry) | R_PAGE_LARGE); - else - return entry; -} - #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE static inline bool gigantic_page_supported(void) { diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h index 50ed64fba4ae..b3520b549cba 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h @@ -12,9 +12,9 @@ * 2 of the License, or (at your option) any later version. */ -#include <asm/asm-compat.h> #include <asm/page.h> #include <asm/bug.h> +#include <asm/asm-const.h> /* * This is necessary to get the definition of PGTABLE_RANGE which we @@ -364,6 +364,16 @@ static inline unsigned long hpte_new_to_old_r(unsigned long r) return r & ~HPTE_R_3_0_SSIZE_MASK; } +static inline unsigned long hpte_get_old_v(struct hash_pte *hptep) +{ + unsigned long hpte_v; + + hpte_v = be64_to_cpu(hptep->v); + if (cpu_has_feature(CPU_FTR_ARCH_300)) + hpte_v = hpte_new_to_old_v(hpte_v, be64_to_cpu(hptep->r)); + return hpte_v; +} + /* * This function sets the AVPN and L fields of the HPTE appropriately * using the base page size and actual page size. @@ -487,6 +497,9 @@ extern void hpte_init_native(void); extern void slb_initialize(void); extern void slb_flush_and_rebolt(void); +void slb_flush_all_realmode(void); +void __slb_restore_bolted_realmode(void); +void slb_restore_bolted_realmode(void); extern void slb_vmalloc_update(void); extern void slb_set_size(u16 size); diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h index 01ee40f11f3a..391ed2c3b697 100644 --- a/arch/powerpc/include/asm/book3s/64/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -9,6 +9,7 @@ #include <linux/slab.h> #include <linux/cpumask.h> +#include <linux/kmemleak.h> #include <linux/percpu.h> struct vmemmap_backing { @@ -83,6 +84,13 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm) pgd = kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE), pgtable_gfp_flags(mm, GFP_KERNEL)); /* + * Don't scan the PGD for pointers, it contains references to PUDs but + * those references are not full pointers and so can't be recognised by + * kmemleak. + */ + kmemleak_no_scan(pgd); + + /* * With hugetlb, we don't clear the second half of the page table. * If we share the same slab cache with the pmd or pud level table, * we need to make sure we zero out the full table on alloc. @@ -110,8 +118,19 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(PGT_CACHE(PUD_CACHE_INDEX), - pgtable_gfp_flags(mm, GFP_KERNEL)); + pud_t *pud; + + pud = kmem_cache_alloc(PGT_CACHE(PUD_CACHE_INDEX), + pgtable_gfp_flags(mm, GFP_KERNEL)); + /* + * Tell kmemleak to ignore the PUD, that means don't scan it for + * pointers and don't consider it a leak. PUDs are typically only + * referred to by their PGD, but kmemleak is not able to recognise those + * as pointers, leading to false leak reports. + */ + kmemleak_ignore(pud); + + return pud; } static inline void pud_free(struct mm_struct *mm, pud_t *pud) @@ -208,4 +227,11 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, #define check_pgt_cache() do { } while (0) +extern atomic_long_t direct_pages_count[MMU_PAGE_COUNT]; +static inline void update_page_count(int psize, long count) +{ + if (IS_ENABLED(CONFIG_PROC_FS)) + atomic_long_add(count, &direct_pages_count[psize]); +} + #endif /* _ASM_POWERPC_BOOK3S_64_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 42aafba7a308..676118743a06 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -479,9 +479,8 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, { if (full && radix_enabled()) { /* - * Let's skip the DD1 style pte update here. We know that - * this is a full mm pte clear and hence can be sure there is - * no parallel set_pte. + * We know that this is a full mm pte clear and + * hence can be sure there is no parallel set_pte. */ return radix__ptep_get_and_clear_full(mm, addr, ptep, full); } diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index ef9f96742ce1..7d1a3d1543fc 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -2,6 +2,8 @@ #ifndef _ASM_POWERPC_PGTABLE_RADIX_H #define _ASM_POWERPC_PGTABLE_RADIX_H +#include <asm/asm-const.h> + #ifndef __ASSEMBLY__ #include <asm/cmpxchg.h> #endif @@ -12,12 +14,6 @@ #include <asm/book3s/64/radix-4k.h> #endif -/* - * For P9 DD1 only, we need to track whether the pte's huge. - */ -#define R_PAGE_LARGE _RPAGE_RSV1 - - #ifndef __ASSEMBLY__ #include <asm/book3s/64/tlbflush-radix.h> #include <asm/cpu_has_feature.h> @@ -36,6 +32,9 @@ #define RADIX_PUD_BAD_BITS 0x60000000000000e0UL #define RADIX_PGD_BAD_BITS 0x60000000000000e0UL +#define RADIX_PMD_SHIFT (PAGE_SHIFT + RADIX_PTE_INDEX_SIZE) +#define RADIX_PUD_SHIFT (RADIX_PMD_SHIFT + RADIX_PMD_INDEX_SIZE) +#define RADIX_PGD_SHIFT (RADIX_PUD_SHIFT + RADIX_PUD_INDEX_SIZE) /* * Size of EA range mapped by our pagetables. */ @@ -154,20 +153,7 @@ static inline unsigned long radix__pte_update(struct mm_struct *mm, { unsigned long old_pte; - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - - unsigned long new_pte; - - old_pte = __radix_pte_update(ptep, ~0ul, 0); - /* - * new value of pte - */ - new_pte = (old_pte | set) & ~clr; - radix__flush_tlb_pte_p9_dd1(old_pte, mm, addr); - if (new_pte) - __radix_pte_update(ptep, 0, new_pte); - } else - old_pte = __radix_pte_update(ptep, clr, set); + old_pte = __radix_pte_update(ptep, clr, set); if (!huge) assert_pte_locked(mm, addr); @@ -253,8 +239,6 @@ static inline int radix__pmd_trans_huge(pmd_t pmd) static inline pmd_t radix__pmd_mkhuge(pmd_t pmd) { - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - return __pmd(pmd_val(pmd) | _PAGE_PTE | R_PAGE_LARGE); return __pmd(pmd_val(pmd) | _PAGE_PTE); } @@ -285,18 +269,14 @@ static inline unsigned long radix__get_tree_size(void) unsigned long rts_field; /* * We support 52 bits, hence: - * DD1 52-28 = 24, 0b11000 - * Others 52-31 = 21, 0b10101 + * bits 52 - 31 = 21, 0b10101 * RTS encoding details * bits 0 - 3 of rts -> bits 6 - 8 unsigned long * bits 4 - 5 of rts -> bits 62 - 63 of unsigned long */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - rts_field = (0x3UL << 61); - else { - rts_field = (0x5UL << 5); /* 6 - 8 bits */ - rts_field |= (0x2UL << 61); - } + rts_field = (0x5UL << 5); /* 6 - 8 bits */ + rts_field |= (0x2UL << 61); + return rts_field; } diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h index ef5c3f2994c9..1154a6dc6d26 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h @@ -48,8 +48,6 @@ extern void radix__flush_tlb_page_psize(struct mm_struct *mm, unsigned long vmad extern void radix__flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr); extern void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr); extern void radix__flush_tlb_all(void); -extern void radix__flush_tlb_pte_p9_dd1(unsigned long old_pte, struct mm_struct *mm, - unsigned long address); extern void radix__flush_tlb_lpid_page(unsigned int lpid, unsigned long addr, diff --git a/arch/powerpc/include/asm/book3s/tlbflush.h b/arch/powerpc/include/asm/book3s/tlbflush.h new file mode 100644 index 000000000000..dec11de41055 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/tlbflush.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_BOOK3S_TLBFLUSH_H +#define _ASM_POWERPC_BOOK3S_TLBFLUSH_H + +#ifdef CONFIG_PPC64 +#include <asm/book3s/64/tlbflush.h> +#else +#include <asm/book3s/32/tlbflush.h> +#endif + +#endif /* _ASM_POWERPC_BOOK3S_TLBFLUSH_H */ diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h index 0d72ec75da63..d5a8d7bf0759 100644 --- a/arch/powerpc/include/asm/cacheflush.h +++ b/arch/powerpc/include/asm/cacheflush.h @@ -11,7 +11,6 @@ #include <linux/mm.h> #include <asm/cputable.h> -#include <asm/cpu_has_feature.h> /* * No cache flushing is required when address mappings are changed, diff --git a/arch/powerpc/include/asm/cmpxchg.h b/arch/powerpc/include/asm/cmpxchg.h index 9b001f1f6b32..27183871eb3b 100644 --- a/arch/powerpc/include/asm/cmpxchg.h +++ b/arch/powerpc/include/asm/cmpxchg.h @@ -5,8 +5,8 @@ #ifdef __KERNEL__ #include <linux/compiler.h> #include <asm/synch.h> -#include <asm/asm-compat.h> #include <linux/bug.h> +#include <asm/asm-405.h> #ifdef __BIG_ENDIAN #define BITOFF_CAL(size, off) ((sizeof(u32) - size - off) * BITS_PER_BYTE) diff --git a/arch/powerpc/include/asm/code-patching-asm.h b/arch/powerpc/include/asm/code-patching-asm.h new file mode 100644 index 000000000000..ed7b1448493a --- /dev/null +++ b/arch/powerpc/include/asm/code-patching-asm.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2018, Michael Ellerman, IBM Corporation. + */ +#ifndef _ASM_POWERPC_CODE_PATCHING_ASM_H +#define _ASM_POWERPC_CODE_PATCHING_ASM_H + +/* Define a "site" that can be patched */ +.macro patch_site label name + .pushsection ".rodata" + .balign 4 + .global \name +\name: + .4byte \label - . + .popsection +.endm + +#endif /* _ASM_POWERPC_CODE_PATCHING_ASM_H */ diff --git a/arch/powerpc/include/asm/code-patching.h b/arch/powerpc/include/asm/code-patching.h index 812535f40124..31733a95bbd0 100644 --- a/arch/powerpc/include/asm/code-patching.h +++ b/arch/powerpc/include/asm/code-patching.h @@ -14,6 +14,7 @@ #include <asm/ppc-opcode.h> #include <linux/string.h> #include <linux/kallsyms.h> +#include <asm/asm-compat.h> /* Flags for create_branch: * "b" == create_branch(addr, target, 0); @@ -32,6 +33,8 @@ unsigned int create_cond_branch(const unsigned int *addr, int patch_branch(unsigned int *addr, unsigned long target, int flags); int patch_instruction(unsigned int *addr, unsigned int instr); int raw_patch_instruction(unsigned int *addr, unsigned int instr); +int patch_instruction_site(s32 *addr, unsigned int instr); +int patch_branch_site(s32 *site, unsigned long target, int flags); int instr_is_relative_branch(unsigned int instr); int instr_is_relative_link_branch(unsigned int instr); diff --git a/arch/powerpc/include/asm/cpuidle.h b/arch/powerpc/include/asm/cpuidle.h index e210a83eb196..43e5f31fe64d 100644 --- a/arch/powerpc/include/asm/cpuidle.h +++ b/arch/powerpc/include/asm/cpuidle.h @@ -79,6 +79,19 @@ struct stop_sprs { u64 mmcra; }; +#define PNV_IDLE_NAME_LEN 16 +struct pnv_idle_states_t { + char name[PNV_IDLE_NAME_LEN]; + u32 latency_ns; + u32 residency_ns; + u64 psscr_val; + u64 psscr_mask; + u32 flags; + bool valid; +}; + +extern struct pnv_idle_states_t *pnv_idle_states; +extern int nr_pnv_idle_states; extern u32 pnv_fastsleep_workaround_at_entry[]; extern u32 pnv_fastsleep_workaround_at_exit[]; diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 9c0a3083571b..29f49a35d6ee 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -4,9 +4,8 @@ #include <linux/types.h> -#include <asm/asm-compat.h> -#include <asm/feature-fixups.h> #include <uapi/asm/cputable.h> +#include <asm/asm-const.h> #ifndef __ASSEMBLY__ @@ -210,7 +209,6 @@ static inline void cpu_feature_keys_init(void) { } #define CPU_FTR_DAWR LONG_ASM_CONST(0x0000008000000000) #define CPU_FTR_DABRX LONG_ASM_CONST(0x0000010000000000) #define CPU_FTR_PMAO_BUG LONG_ASM_CONST(0x0000020000000000) -#define CPU_FTR_POWER9_DD1 LONG_ASM_CONST(0x0000040000000000) #define CPU_FTR_POWER9_DD2_1 LONG_ASM_CONST(0x0000080000000000) #define CPU_FTR_P9_TM_HV_ASSIST LONG_ASM_CONST(0x0000100000000000) #define CPU_FTR_P9_TM_XER_SO_BUG LONG_ASM_CONST(0x0000200000000000) @@ -452,7 +450,6 @@ static inline void cpu_feature_keys_init(void) { } CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_PKEY) #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) -#define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) #define CPU_FTRS_POWER9 (CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -464,8 +461,6 @@ static inline void cpu_feature_keys_init(void) { } CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_ARCH_207S | \ CPU_FTR_TM_COMP | CPU_FTR_ARCH_300 | CPU_FTR_PKEY | \ CPU_FTR_P9_TLBIE_BUG | CPU_FTR_P9_TIDR) -#define CPU_FTRS_POWER9_DD1 ((CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD1) & \ - (~CPU_FTR_SAO)) #define CPU_FTRS_POWER9_DD2_0 CPU_FTRS_POWER9 #define CPU_FTRS_POWER9_DD2_1 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1) #define CPU_FTRS_POWER9_DD2_2 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1 | \ @@ -488,17 +483,15 @@ static inline void cpu_feature_keys_init(void) { } #ifdef CONFIG_CPU_LITTLE_ENDIAN #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | CPU_FTRS_POWER8 | \ - CPU_FTRS_POWER8_DD1 | CPU_FTR_ALTIVEC_COMP | CPU_FTR_VSX_COMP | \ - CPU_FTRS_POWER9 | CPU_FTRS_POWER9_DD1 | CPU_FTRS_POWER9_DD2_1 | \ - CPU_FTRS_POWER9_DD2_2) + CPU_FTR_ALTIVEC_COMP | CPU_FTR_VSX_COMP | CPU_FTRS_POWER9 | \ + CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2) #else #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \ CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \ - CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \ - CPU_FTRS_PA6T | CPU_FTR_VSX_COMP | CPU_FTR_ALTIVEC_COMP | \ - CPU_FTRS_POWER9 | CPU_FTRS_POWER9_DD1 | CPU_FTRS_POWER9_DD2_1 | \ - CPU_FTRS_POWER9_DD2_2) + CPU_FTRS_POWER8 | CPU_FTRS_CELL | CPU_FTRS_PA6T | \ + CPU_FTR_VSX_COMP | CPU_FTR_ALTIVEC_COMP | CPU_FTRS_POWER9 | \ + CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2) #endif /* CONFIG_CPU_LITTLE_ENDIAN */ #endif #else @@ -566,17 +559,15 @@ enum { #ifdef CONFIG_CPU_LITTLE_ENDIAN #define CPU_FTRS_ALWAYS \ (CPU_FTRS_POSSIBLE & ~CPU_FTR_HVMODE & CPU_FTRS_POWER7 & \ - CPU_FTRS_POWER8E & CPU_FTRS_POWER8 & CPU_FTRS_POWER8_DD1 & \ - CPU_FTRS_POWER9 & CPU_FTRS_POWER9_DD1 & CPU_FTRS_POWER9_DD2_1 & \ - CPU_FTRS_DT_CPU_BASE) + CPU_FTRS_POWER8E & CPU_FTRS_POWER8 & CPU_FTRS_POWER9 & \ + CPU_FTRS_POWER9_DD2_1 & CPU_FTRS_DT_CPU_BASE) #else #define CPU_FTRS_ALWAYS \ (CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & \ CPU_FTRS_POWER6 & CPU_FTRS_POWER7 & CPU_FTRS_CELL & \ CPU_FTRS_PA6T & CPU_FTRS_POWER8 & CPU_FTRS_POWER8E & \ - CPU_FTRS_POWER8_DD1 & ~CPU_FTR_HVMODE & CPU_FTRS_POSSIBLE & \ - CPU_FTRS_POWER9 & CPU_FTRS_POWER9_DD1 & CPU_FTRS_POWER9_DD2_1 & \ - CPU_FTRS_DT_CPU_BASE) + ~CPU_FTR_HVMODE & CPU_FTRS_POSSIBLE & CPU_FTRS_POWER9 & \ + CPU_FTRS_POWER9_DD2_1 & CPU_FTRS_DT_CPU_BASE) #endif /* CONFIG_CPU_LITTLE_ENDIAN */ #endif #else diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h index bc4903badb3f..133672744b2e 100644 --- a/arch/powerpc/include/asm/cputime.h +++ b/arch/powerpc/include/asm/cputime.h @@ -23,7 +23,6 @@ #include <asm/div64.h> #include <asm/time.h> #include <asm/param.h> -#include <asm/cpu_has_feature.h> typedef u64 __nocast cputime_t; typedef u64 __nocast cputime64_t; diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h index 9f2ae0d25e15..99b84db23e8c 100644 --- a/arch/powerpc/include/asm/dbell.h +++ b/arch/powerpc/include/asm/dbell.h @@ -16,7 +16,7 @@ #include <linux/threads.h> #include <asm/ppc-opcode.h> -#include <asm/cpu_has_feature.h> +#include <asm/feature-fixups.h> #define PPC_DBELL_MSG_BRDCAST (0x04000000) #define PPC_DBELL_TYPE(x) (((x) & 0xf) << (63-36)) diff --git a/arch/powerpc/include/asm/dcr-native.h b/arch/powerpc/include/asm/dcr-native.h index 4a2beef74277..151dff555f50 100644 --- a/arch/powerpc/include/asm/dcr-native.h +++ b/arch/powerpc/include/asm/dcr-native.h @@ -25,6 +25,7 @@ #include <linux/spinlock.h> #include <asm/cputable.h> #include <asm/cpu_has_feature.h> +#include <linux/stringify.h> typedef struct { unsigned int base; diff --git a/arch/powerpc/include/asm/debug.h b/arch/powerpc/include/asm/debug.h index ce5da214ffe5..7756026b95ca 100644 --- a/arch/powerpc/include/asm/debug.h +++ b/arch/powerpc/include/asm/debug.h @@ -45,7 +45,6 @@ static inline int debugger_break_match(struct pt_regs *regs) { return 0; } static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; } #endif -void set_breakpoint(struct arch_hw_breakpoint *brk); void __set_breakpoint(struct arch_hw_breakpoint *brk); bool ppc_breakpoint_available(void); #ifdef CONFIG_PPC_ADV_DEBUG_REGS diff --git a/arch/powerpc/include/asm/dt_cpu_ftrs.h b/arch/powerpc/include/asm/dt_cpu_ftrs.h index 71515d909ed1..0c729e2d0e8a 100644 --- a/arch/powerpc/include/asm/dt_cpu_ftrs.h +++ b/arch/powerpc/include/asm/dt_cpu_ftrs.h @@ -10,8 +10,6 @@ */ #include <linux/types.h> -#include <asm/asm-compat.h> -#include <asm/feature-fixups.h> #include <uapi/asm/cputable.h> #ifdef CONFIG_PPC_DT_CPU_FTRS diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 677102baf3cd..219637ea69a1 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -36,13 +36,14 @@ struct pci_dn; #ifdef CONFIG_EEH /* EEH subsystem flags */ -#define EEH_ENABLED 0x01 /* EEH enabled */ -#define EEH_FORCE_DISABLED 0x02 /* EEH disabled */ -#define EEH_PROBE_MODE_DEV 0x04 /* From PCI device */ -#define EEH_PROBE_MODE_DEVTREE 0x08 /* From device tree */ -#define EEH_VALID_PE_ZERO 0x10 /* PE#0 is valid */ -#define EEH_ENABLE_IO_FOR_LOG 0x20 /* Enable IO for log */ -#define EEH_EARLY_DUMP_LOG 0x40 /* Dump log immediately */ +#define EEH_ENABLED 0x01 /* EEH enabled */ +#define EEH_FORCE_DISABLED 0x02 /* EEH disabled */ +#define EEH_PROBE_MODE_DEV 0x04 /* From PCI device */ +#define EEH_PROBE_MODE_DEVTREE 0x08 /* From device tree */ +#define EEH_VALID_PE_ZERO 0x10 /* PE#0 is valid */ +#define EEH_ENABLE_IO_FOR_LOG 0x20 /* Enable IO for log */ +#define EEH_EARLY_DUMP_LOG 0x40 /* Dump log immediately */ +#define EEH_POSTPONED_PROBE 0x80 /* Powernv may postpone device probe */ /* * Delay for PE reset, all in ms diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index c40b4380951c..a86feddddad0 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -35,6 +35,7 @@ * implementations as possible. */ #include <asm/head-64.h> +#include <asm/feature-fixups.h> /* PACA save area offsets (exgen, exmc, etc) */ #define EX_R9 0 @@ -156,7 +157,7 @@ b hrfi_flush_fallback #ifdef CONFIG_RELOCATABLE -#define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ +#define __EXCEPTION_PROLOG_2_RELON(label, h) \ mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ LOAD_HANDLER(r12,label); \ mtctr r12; \ @@ -166,25 +167,26 @@ bctr; #else /* If not relocatable, we can jump directly -- and save messing with LR */ -#define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ +#define __EXCEPTION_PROLOG_2_RELON(label, h) \ mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \ li r10,MSR_RI; \ mtmsrd r10,1; /* Set RI (EE=0) */ \ b label; #endif -#define EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ - __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ +#define EXCEPTION_PROLOG_2_RELON(label, h) \ + __EXCEPTION_PROLOG_2_RELON(label, h) /* - * As EXCEPTION_PROLOG_PSERIES(), except we've already got relocation on - * so no need to rfid. Save lr in case we're CONFIG_RELOCATABLE, in which - * case EXCEPTION_RELON_PROLOG_PSERIES_1 will be using lr. + * As EXCEPTION_PROLOG(), except we've already got relocation on so no need to + * rfid. Save LR in case we're CONFIG_RELOCATABLE, in which case + * EXCEPTION_PROLOG_2_RELON will be using LR. */ -#define EXCEPTION_RELON_PROLOG_PSERIES(area, label, h, extra, vec) \ +#define EXCEPTION_RELON_PROLOG(area, label, h, extra, vec) \ + SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(area); \ EXCEPTION_PROLOG_1(area, extra, vec); \ - EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) + EXCEPTION_PROLOG_2_RELON(label, h) /* * We're short on space and time in the exception prolog, so we can't @@ -315,7 +317,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) #define EXCEPTION_PROLOG_1(area, extra, vec) \ _EXCEPTION_PROLOG_1(area, extra, vec) -#define __EXCEPTION_PROLOG_PSERIES_1(label, h) \ +#define __EXCEPTION_PROLOG_2(label, h) \ ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \ mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ LOAD_HANDLER(r12,label) \ @@ -324,11 +326,11 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) mtspr SPRN_##h##SRR1,r10; \ h##RFI_TO_KERNEL; \ b . /* prevent speculative execution */ -#define EXCEPTION_PROLOG_PSERIES_1(label, h) \ - __EXCEPTION_PROLOG_PSERIES_1(label, h) +#define EXCEPTION_PROLOG_2(label, h) \ + __EXCEPTION_PROLOG_2(label, h) /* _NORI variant keeps MSR_RI clear */ -#define __EXCEPTION_PROLOG_PSERIES_1_NORI(label, h) \ +#define __EXCEPTION_PROLOG_2_NORI(label, h) \ ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \ xori r10,r10,MSR_RI; /* Clear MSR_RI */ \ mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ @@ -339,13 +341,14 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) h##RFI_TO_KERNEL; \ b . /* prevent speculative execution */ -#define EXCEPTION_PROLOG_PSERIES_1_NORI(label, h) \ - __EXCEPTION_PROLOG_PSERIES_1_NORI(label, h) +#define EXCEPTION_PROLOG_2_NORI(label, h) \ + __EXCEPTION_PROLOG_2_NORI(label, h) -#define EXCEPTION_PROLOG_PSERIES(area, label, h, extra, vec) \ +#define EXCEPTION_PROLOG(area, label, h, extra, vec) \ + SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(area); \ EXCEPTION_PROLOG_1(area, extra, vec); \ - EXCEPTION_PROLOG_PSERIES_1(label, h); + EXCEPTION_PROLOG_2(label, h); #define __KVMTEST(h, n) \ lbz r10,HSTATE_IN_GUEST(r13); \ @@ -416,10 +419,10 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) #endif /* Do not enable RI */ -#define EXCEPTION_PROLOG_PSERIES_NORI(area, label, h, extra, vec) \ +#define EXCEPTION_PROLOG_NORI(area, label, h, extra, vec) \ EXCEPTION_PROLOG_0(area); \ EXCEPTION_PROLOG_1(area, extra, vec); \ - EXCEPTION_PROLOG_PSERIES_1_NORI(label, h); + EXCEPTION_PROLOG_2_NORI(label, h); #define __KVM_HANDLER(area, h, n) \ @@ -550,10 +553,8 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) /* * Exception vectors. */ -#define STD_EXCEPTION_PSERIES(vec, label) \ - SET_SCRATCH0(r13); /* save r13 */ \ - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label, \ - EXC_STD, KVMTEST_PR, vec); \ +#define STD_EXCEPTION(vec, label) \ + EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_STD, KVMTEST_PR, vec); /* Version of above for when we have to branch out-of-line */ #define __OOL_EXCEPTION(vec, label, hdlr) \ @@ -561,36 +562,31 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) EXCEPTION_PROLOG_0(PACA_EXGEN) \ b hdlr; -#define STD_EXCEPTION_PSERIES_OOL(vec, label) \ +#define STD_EXCEPTION_OOL(vec, label) \ EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_PR, vec); \ - EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD) + EXCEPTION_PROLOG_2(label, EXC_STD) #define STD_EXCEPTION_HV(loc, vec, label) \ - SET_SCRATCH0(r13); /* save r13 */ \ - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label, \ - EXC_HV, KVMTEST_HV, vec); + EXCEPTION_PROLOG(PACA_EXGEN, label, EXC_HV, KVMTEST_HV, vec); #define STD_EXCEPTION_HV_OOL(vec, label) \ EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec); \ - EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV) + EXCEPTION_PROLOG_2(label, EXC_HV) -#define STD_RELON_EXCEPTION_PSERIES(loc, vec, label) \ +#define STD_RELON_EXCEPTION(loc, vec, label) \ /* No guest interrupts come through here */ \ - SET_SCRATCH0(r13); /* save r13 */ \ - EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label, EXC_STD, NOTEST, vec); + EXCEPTION_RELON_PROLOG(PACA_EXGEN, label, EXC_STD, NOTEST, vec); -#define STD_RELON_EXCEPTION_PSERIES_OOL(vec, label) \ +#define STD_RELON_EXCEPTION_OOL(vec, label) \ EXCEPTION_PROLOG_1(PACA_EXGEN, NOTEST, vec); \ - EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_STD) + EXCEPTION_PROLOG_2_RELON(label, EXC_STD) #define STD_RELON_EXCEPTION_HV(loc, vec, label) \ - SET_SCRATCH0(r13); /* save r13 */ \ - EXCEPTION_RELON_PROLOG_PSERIES(PACA_EXGEN, label, \ - EXC_HV, KVMTEST_HV, vec); + EXCEPTION_RELON_PROLOG(PACA_EXGEN, label, EXC_HV, KVMTEST_HV, vec); #define STD_RELON_EXCEPTION_HV_OOL(vec, label) \ EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, vec); \ - EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV) + EXCEPTION_PROLOG_2_RELON(label, EXC_HV) /* This associate vector numbers with bits in paca->irq_happened */ #define SOFTEN_VALUE_0x500 PACA_IRQ_EE @@ -627,55 +623,45 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) #define SOFTEN_NOTEST_PR(vec, bitmask) _SOFTEN_TEST(EXC_STD, vec, bitmask) #define SOFTEN_NOTEST_HV(vec, bitmask) _SOFTEN_TEST(EXC_HV, vec, bitmask) -#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \ +#define __MASKABLE_EXCEPTION(vec, label, h, extra, bitmask) \ SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(PACA_EXGEN); \ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask); \ - EXCEPTION_PROLOG_PSERIES_1(label, h); + EXCEPTION_PROLOG_2(label, h); -#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \ - __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) +#define MASKABLE_EXCEPTION(vec, label, bitmask) \ + __MASKABLE_EXCEPTION(vec, label, EXC_STD, SOFTEN_TEST_PR, bitmask) -#define MASKABLE_EXCEPTION_PSERIES(loc, vec, label, bitmask) \ - _MASKABLE_EXCEPTION_PSERIES(vec, label, \ - EXC_STD, SOFTEN_TEST_PR, bitmask) - -#define MASKABLE_EXCEPTION_PSERIES_OOL(vec, label, bitmask) \ +#define MASKABLE_EXCEPTION_OOL(vec, label, bitmask) \ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec, bitmask);\ - EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD) + EXCEPTION_PROLOG_2(label, EXC_STD) -#define MASKABLE_EXCEPTION_HV(loc, vec, label, bitmask) \ - _MASKABLE_EXCEPTION_PSERIES(vec, label, \ - EXC_HV, SOFTEN_TEST_HV, bitmask) +#define MASKABLE_EXCEPTION_HV(vec, label, bitmask) \ + __MASKABLE_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask) #define MASKABLE_EXCEPTION_HV_OOL(vec, label, bitmask) \ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\ - EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV) + EXCEPTION_PROLOG_2(label, EXC_HV) -#define __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \ +#define __MASKABLE_RELON_EXCEPTION(vec, label, h, extra, bitmask) \ SET_SCRATCH0(r13); /* save r13 */ \ EXCEPTION_PROLOG_0(PACA_EXGEN); \ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask); \ - EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) - -#define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)\ - __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) + EXCEPTION_PROLOG_2_RELON(label, h) -#define MASKABLE_RELON_EXCEPTION_PSERIES(loc, vec, label, bitmask) \ - _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \ - EXC_STD, SOFTEN_NOTEST_PR, bitmask) +#define MASKABLE_RELON_EXCEPTION(vec, label, bitmask) \ + __MASKABLE_RELON_EXCEPTION(vec, label, EXC_STD, SOFTEN_NOTEST_PR, bitmask) -#define MASKABLE_RELON_EXCEPTION_PSERIES_OOL(vec, label, bitmask) \ +#define MASKABLE_RELON_EXCEPTION_OOL(vec, label, bitmask) \ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_PR, vec, bitmask);\ - EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD); + EXCEPTION_PROLOG_2(label, EXC_STD); -#define MASKABLE_RELON_EXCEPTION_HV(loc, vec, label, bitmask) \ - _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \ - EXC_HV, SOFTEN_TEST_HV, bitmask) +#define MASKABLE_RELON_EXCEPTION_HV(vec, label, bitmask) \ + __MASKABLE_RELON_EXCEPTION(vec, label, EXC_HV, SOFTEN_TEST_HV, bitmask) #define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label, bitmask) \ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\ - EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV) + EXCEPTION_PROLOG_2_RELON(label, EXC_HV) /* * Our exception common code can be passed various "additions" diff --git a/arch/powerpc/include/asm/fadump.h b/arch/powerpc/include/asm/fadump.h index 5a23010af600..1e7a33592e29 100644 --- a/arch/powerpc/include/asm/fadump.h +++ b/arch/powerpc/include/asm/fadump.h @@ -195,9 +195,6 @@ struct fadump_crash_info_header { struct cpumask online_mask; }; -/* Crash memory ranges */ -#define INIT_CRASHMEM_RANGES (INIT_MEMBLOCK_REGIONS + 2) - struct fad_crash_memory_ranges { unsigned long long base; unsigned long long size; diff --git a/arch/powerpc/include/asm/feature-fixups.h b/arch/powerpc/include/asm/feature-fixups.h index fcfd05672b1b..33b6f9c892c8 100644 --- a/arch/powerpc/include/asm/feature-fixups.h +++ b/arch/powerpc/include/asm/feature-fixups.h @@ -1,6 +1,8 @@ #ifndef __ASM_POWERPC_FEATURE_FIXUPS_H #define __ASM_POWERPC_FEATURE_FIXUPS_H +#include <asm/asm-const.h> + /* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h index 535add3f7791..7a051bd21f87 100644 --- a/arch/powerpc/include/asm/firmware.h +++ b/arch/powerpc/include/asm/firmware.h @@ -14,8 +14,7 @@ #ifdef __KERNEL__ -#include <asm/asm-compat.h> -#include <asm/feature-fixups.h> +#include <asm/asm-const.h> /* firmware feature bitmask values */ diff --git a/arch/powerpc/include/asm/fixmap.h b/arch/powerpc/include/asm/fixmap.h index 6c40dfda5912..41cc15c14eee 100644 --- a/arch/powerpc/include/asm/fixmap.h +++ b/arch/powerpc/include/asm/fixmap.h @@ -15,7 +15,6 @@ #define _ASM_FIXMAP_H #ifndef __ASSEMBLY__ -#include <linux/kernel.h> #include <asm/page.h> #include <asm/pgtable.h> #ifdef CONFIG_HIGHMEM diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h index 1a944c18c539..94542776a62d 100644 --- a/arch/powerpc/include/asm/futex.h +++ b/arch/powerpc/include/asm/futex.h @@ -8,7 +8,7 @@ #include <linux/uaccess.h> #include <asm/errno.h> #include <asm/synch.h> -#include <asm/asm-compat.h> +#include <asm/asm-405.h> #define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ __asm__ __volatile ( \ diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h index 7e0e93f24cb7..a4f947888744 100644 --- a/arch/powerpc/include/asm/head-64.h +++ b/arch/powerpc/include/asm/head-64.h @@ -260,22 +260,22 @@ name: #define EXC_REAL(name, start, size) \ EXC_REAL_BEGIN(name, start, size); \ - STD_EXCEPTION_PSERIES(start, name##_common); \ + STD_EXCEPTION(start, name##_common); \ EXC_REAL_END(name, start, size); #define EXC_VIRT(name, start, size, realvec) \ EXC_VIRT_BEGIN(name, start, size); \ - STD_RELON_EXCEPTION_PSERIES(start, realvec, name##_common); \ + STD_RELON_EXCEPTION(start, realvec, name##_common); \ EXC_VIRT_END(name, start, size); #define EXC_REAL_MASKABLE(name, start, size, bitmask) \ EXC_REAL_BEGIN(name, start, size); \ - MASKABLE_EXCEPTION_PSERIES(start, start, name##_common, bitmask);\ + MASKABLE_EXCEPTION(start, name##_common, bitmask); \ EXC_REAL_END(name, start, size); #define EXC_VIRT_MASKABLE(name, start, size, realvec, bitmask) \ EXC_VIRT_BEGIN(name, start, size); \ - MASKABLE_RELON_EXCEPTION_PSERIES(start, realvec, name##_common, bitmask);\ + MASKABLE_RELON_EXCEPTION(realvec, name##_common, bitmask); \ EXC_VIRT_END(name, start, size); #define EXC_REAL_HV(name, start, size) \ @@ -295,7 +295,7 @@ name: #define __TRAMP_REAL_OOL(name, vec) \ TRAMP_REAL_BEGIN(tramp_real_##name); \ - STD_EXCEPTION_PSERIES_OOL(vec, name##_common); \ + STD_EXCEPTION_OOL(vec, name##_common); #define EXC_REAL_OOL(name, start, size) \ __EXC_REAL_OOL(name, start, size); \ @@ -306,7 +306,7 @@ name: #define __TRAMP_REAL_OOL_MASKABLE(name, vec, bitmask) \ TRAMP_REAL_BEGIN(tramp_real_##name); \ - MASKABLE_EXCEPTION_PSERIES_OOL(vec, name##_common, bitmask); \ + MASKABLE_EXCEPTION_OOL(vec, name##_common, bitmask); #define EXC_REAL_OOL_MASKABLE(name, start, size, bitmask) \ __EXC_REAL_OOL_MASKABLE(name, start, size); \ @@ -346,7 +346,7 @@ name: #define __TRAMP_VIRT_OOL(name, realvec) \ TRAMP_VIRT_BEGIN(tramp_virt_##name); \ - STD_RELON_EXCEPTION_PSERIES_OOL(realvec, name##_common); \ + STD_RELON_EXCEPTION_OOL(realvec, name##_common); #define EXC_VIRT_OOL(name, start, size, realvec) \ __EXC_VIRT_OOL(name, start, size); \ @@ -357,7 +357,7 @@ name: #define __TRAMP_VIRT_OOL_MASKABLE(name, realvec, bitmask) \ TRAMP_VIRT_BEGIN(tramp_virt_##name); \ - MASKABLE_RELON_EXCEPTION_PSERIES_OOL(realvec, name##_common, bitmask);\ + MASKABLE_RELON_EXCEPTION_OOL(realvec, name##_common, bitmask); #define EXC_VIRT_OOL_MASKABLE(name, start, size, realvec, bitmask) \ __EXC_VIRT_OOL_MASKABLE(name, start, size); \ diff --git a/arch/powerpc/include/asm/highmem.h b/arch/powerpc/include/asm/highmem.h index cec820f961da..a4b65b186ec6 100644 --- a/arch/powerpc/include/asm/highmem.h +++ b/arch/powerpc/include/asm/highmem.h @@ -25,7 +25,7 @@ #include <linux/interrupt.h> #include <asm/kmap_types.h> -#include <asm/tlbflush.h> +#include <asm/cacheflush.h> #include <asm/page.h> #include <asm/fixmap.h> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index 3225eb6402cc..2d00cc530083 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -84,9 +84,6 @@ static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr, return dir + idx; } -pte_t *huge_pte_offset_and_shift(struct mm_struct *mm, - unsigned long addr, unsigned *shift); - void flush_dcache_icache_hugepage(struct page *page); int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 662c8347d699..a0b17f9f1ea4 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -342,10 +342,12 @@ #define H_CPU_CHAR_BRANCH_HINTS_HONORED (1ull << 58) // IBM bit 5 #define H_CPU_CHAR_THREAD_RECONFIG_CTRL (1ull << 57) // IBM bit 6 #define H_CPU_CHAR_COUNT_CACHE_DISABLED (1ull << 56) // IBM bit 7 +#define H_CPU_CHAR_BCCTR_FLUSH_ASSIST (1ull << 54) // IBM bit 9 #define H_CPU_BEHAV_FAVOUR_SECURITY (1ull << 63) // IBM bit 0 #define H_CPU_BEHAV_L1D_FLUSH_PR (1ull << 62) // IBM bit 1 #define H_CPU_BEHAV_BNDS_CHK_SPEC_BAR (1ull << 61) // IBM bit 2 +#define H_CPU_BEHAV_FLUSH_COUNT_CACHE (1ull << 58) // IBM bit 5 /* Flag values used in H_REGISTER_PROC_TBL hcall */ #define PROC_TABLE_OP_MASK 0x18 diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index 27d6e3c8fde9..ece4dc89c90b 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -56,6 +56,7 @@ struct perf_event_attr; struct perf_event; struct pmu; struct perf_sample_data; +struct task_struct; #define HW_BREAKPOINT_ALIGN 0x7 diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index e151774cb577..32a18f2f49bc 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -253,14 +253,16 @@ static inline bool lazy_irq_pending(void) /* * This is called by asynchronous interrupts to conditionally - * re-enable hard interrupts when soft-disabled after having - * cleared the source of the interrupt + * re-enable hard interrupts after having cleared the source + * of the interrupt. They are kept disabled if there is a different + * soft-masked interrupt pending that requires hard masking. */ static inline void may_hard_irq_enable(void) { - get_paca()->irq_happened &= ~PACA_IRQ_HARD_DIS; - if (!(get_paca()->irq_happened & PACA_IRQ_MUST_HARD_MASK)) + if (!(get_paca()->irq_happened & PACA_IRQ_MUST_HARD_MASK)) { + get_paca()->irq_happened &= ~PACA_IRQ_HARD_DIS; __hard_irq_enable(); + } } static inline bool arch_irq_disabled_regs(struct pt_regs *regs) diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index 20febe0b7f32..ab3a4fba38e3 100644 --- a/arch/powerpc/include/asm/iommu.h +++ b/arch/powerpc/include/asm/iommu.h @@ -30,6 +30,7 @@ #include <asm/machdep.h> #include <asm/types.h> #include <asm/pci-bridge.h> +#include <asm/asm-const.h> #define IOMMU_PAGE_SHIFT_4K 12 #define IOMMU_PAGE_SIZE_4K (ASM_CONST(1) << IOMMU_PAGE_SHIFT_4K) @@ -69,6 +70,8 @@ struct iommu_table_ops { long index, unsigned long *hpa, enum dma_data_direction *direction); + + __be64 *(*useraddrptr)(struct iommu_table *tbl, long index, bool alloc); #endif void (*clear)(struct iommu_table *tbl, long index, long npages); @@ -117,15 +120,16 @@ struct iommu_table { unsigned long *it_map; /* A simple allocation bitmap for now */ unsigned long it_page_shift;/* table iommu page size */ struct list_head it_group_list;/* List of iommu_table_group_link */ - unsigned long *it_userspace; /* userspace view of the table */ + __be64 *it_userspace; /* userspace view of the table */ struct iommu_table_ops *it_ops; struct kref it_kref; + int it_nid; }; +#define IOMMU_TABLE_USERSPACE_ENTRY_RM(tbl, entry) \ + ((tbl)->it_ops->useraddrptr((tbl), (entry), false)) #define IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry) \ - ((tbl)->it_userspace ? \ - &((tbl)->it_userspace[(entry) - (tbl)->it_offset]) : \ - NULL) + ((tbl)->it_ops->useraddrptr((tbl), (entry), true)) /* Pure 2^n version of get_order */ static inline __attribute_const__ diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h index 9a287e0ac8b1..a3b2cf940b4e 100644 --- a/arch/powerpc/include/asm/jump_label.h +++ b/arch/powerpc/include/asm/jump_label.h @@ -14,7 +14,7 @@ #include <linux/types.h> #include <asm/feature-fixups.h> -#include <asm/asm-compat.h> +#include <asm/asm-const.h> #define JUMP_ENTRY_TYPE stringify_in_c(FTR_ENTRY_LONG) #define JUMP_LABEL_NOP_SIZE 4 diff --git a/arch/powerpc/include/asm/kvm_booke_hv_asm.h b/arch/powerpc/include/asm/kvm_booke_hv_asm.h index e5f048bbcb7c..931260b59ac6 100644 --- a/arch/powerpc/include/asm/kvm_booke_hv_asm.h +++ b/arch/powerpc/include/asm/kvm_booke_hv_asm.h @@ -9,6 +9,8 @@ #ifndef ASM_KVM_BOOKE_HV_ASM_H #define ASM_KVM_BOOKE_HV_ASM_H +#include <asm/feature-fixups.h> + #ifdef __ASSEMBLY__ /* diff --git a/arch/powerpc/include/asm/mmu-44x.h b/arch/powerpc/include/asm/mmu-44x.h index cb57f29f531d..295b3dbb2698 100644 --- a/arch/powerpc/include/asm/mmu-44x.h +++ b/arch/powerpc/include/asm/mmu-44x.h @@ -5,7 +5,7 @@ * PPC440 support */ -#include <asm/page.h> +#include <asm/asm-const.h> #define PPC44x_MMUCR_TID 0x000000ff #define PPC44x_MMUCR_STS 0x00010000 @@ -124,19 +124,19 @@ typedef struct { /* Size of the TLBs used for pinning in lowmem */ #define PPC_PIN_SIZE (1 << 28) /* 256M */ -#if (PAGE_SHIFT == 12) +#if defined(CONFIG_PPC_4K_PAGES) #define PPC44x_TLBE_SIZE PPC44x_TLB_4K #define PPC47x_TLBE_SIZE PPC47x_TLB0_4K #define mmu_virtual_psize MMU_PAGE_4K -#elif (PAGE_SHIFT == 14) +#elif defined(CONFIG_PPC_16K_PAGES) #define PPC44x_TLBE_SIZE PPC44x_TLB_16K #define PPC47x_TLBE_SIZE PPC47x_TLB0_16K #define mmu_virtual_psize MMU_PAGE_16K -#elif (PAGE_SHIFT == 16) +#elif defined(CONFIG_PPC_64K_PAGES) #define PPC44x_TLBE_SIZE PPC44x_TLB_64K #define PPC47x_TLBE_SIZE PPC47x_TLB0_64K #define mmu_virtual_psize MMU_PAGE_64K -#elif (PAGE_SHIFT == 18) +#elif defined(CONFIG_PPC_256K_PAGES) #define PPC44x_TLBE_SIZE PPC44x_TLB_256K #define mmu_virtual_psize MMU_PAGE_256K #else diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 61d15ce92278..13ea441ac531 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -5,8 +5,7 @@ #include <linux/types.h> -#include <asm/asm-compat.h> -#include <asm/feature-fixups.h> +#include <asm/asm-const.h> /* * MMU features bit definitions diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index 7c46a98cc7f4..a507a65b0866 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -8,7 +8,8 @@ #ifndef __ASSEMBLY__ #include <linux/sched.h> #include <linux/threads.h> -#include <asm/io.h> /* For sub-arch specific PPC_PIN_SIZE */ +#include <asm/mmu.h> /* For sub-arch specific PPC_PIN_SIZE */ +#include <asm/asm-405.h> extern unsigned long ioremap_bot; @@ -222,10 +223,6 @@ static inline unsigned long long pte_update(pte_t *p, } #endif /* CONFIG_PTE_64BIT */ -/* - * 2.6 calls this without flushing the TLB entry; this is wrong - * for our hash-based implementation, we fix that up here. - */ #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG static inline int __ptep_test_and_clear_young(unsigned int context, unsigned long addr, pte_t *ptep) { diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index dd0c7236208f..7cd6809f4d33 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -3,11 +3,12 @@ #define _ASM_POWERPC_NOHASH_64_PGTABLE_H /* * This file contains the functions and defines necessary to modify and use - * the ppc64 hashed page table. + * the ppc64 non-hashed page table. */ #include <asm/nohash/64/pgtable-4k.h> #include <asm/barrier.h> +#include <asm/asm-const.h> #ifdef CONFIG_PPC_64K_PAGES #error "Page size not supported" @@ -37,7 +38,7 @@ /* * The vmalloc space starts at the beginning of that region, and - * occupies half of it on hash CPUs and a quarter of it on Book3E + * occupies a quarter of it on Book3E * (we keep a quarter for the virtual memmap) */ #define VMALLOC_START KERN_VIRT_START @@ -77,7 +78,7 @@ /* * Defines the address of the vmemap area, in its own region on - * hash table CPUs and after the vmalloc space on Book3E + * after the vmalloc space on Book3E */ #define VMEMMAP_BASE VMALLOC_END #define VMEMMAP_END KERN_IO_START @@ -247,14 +248,6 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, pte_update(mm, addr, ptep, _PAGE_RW, 0, 1); } -/* - * We currently remove entries from the hashtable regardless of whether - * the entry was young or dirty. The generic routines only flush if the - * entry was young or dirty which is not good enough. - * - * We should be more intelligent about this but for the moment we override - * these functions and force a tlb flush unconditionally - */ #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH #define ptep_clear_flush_young(__vma, __address, __ptep) \ ({ \ @@ -278,9 +271,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, } -/* Set the dirty and/or accessed bits atomically in a linux PTE, this - * function doesn't need to flush the hash entry - */ +/* Set the dirty and/or accessed bits atomically in a linux PTE */ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, pte_t *ptep, pte_t entry, unsigned long address, diff --git a/arch/powerpc/include/asm/nohash/tlbflush.h b/arch/powerpc/include/asm/nohash/tlbflush.h new file mode 100644 index 000000000000..b1d8fec29169 --- /dev/null +++ b/arch/powerpc/include/asm/nohash/tlbflush.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_POWERPC_NOHASH_TLBFLUSH_H +#define _ASM_POWERPC_NOHASH_TLBFLUSH_H + +/* + * TLB flushing: + * + * - flush_tlb_mm(mm) flushes the specified mm context TLB's + * - flush_tlb_page(vma, vmaddr) flushes one page + * - local_flush_tlb_mm(mm, full) flushes the specified mm context on + * the local processor + * - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor + * - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB + * - flush_tlb_range(vma, start, end) flushes a range of pages + * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages + * + */ + +/* + * TLB flushing for software loaded TLB chips + * + * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range & + * flush_tlb_kernel_range are best implemented as tlbia vs + * specific tlbie's + */ + +struct vm_area_struct; +struct mm_struct; + +#define MMU_NO_CONTEXT ((unsigned int)-1) + +extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end); +extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); + +extern void local_flush_tlb_mm(struct mm_struct *mm); +extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); + +extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, + int tsize, int ind); + +#ifdef CONFIG_SMP +extern void flush_tlb_mm(struct mm_struct *mm); +extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, + int tsize, int ind); +#else +#define flush_tlb_mm(mm) local_flush_tlb_mm(mm) +#define flush_tlb_page(vma,addr) local_flush_tlb_page(vma,addr) +#define __flush_tlb_page(mm,addr,p,i) __local_flush_tlb_page(mm,addr,p,i) +#endif + +#endif /* _ASM_POWERPC_NOHASH_TLBFLUSH_H */ diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h index 3bab299eda49..8365353330b4 100644 --- a/arch/powerpc/include/asm/opal-api.h +++ b/arch/powerpc/include/asm/opal-api.h @@ -206,9 +206,11 @@ #define OPAL_NPU_SPA_CLEAR_CACHE 160 #define OPAL_NPU_TL_SET 161 #define OPAL_SENSOR_READ_U64 162 +#define OPAL_SENSOR_GROUP_ENABLE 163 #define OPAL_PCI_GET_PBCQ_TUNNEL_BAR 164 #define OPAL_PCI_SET_PBCQ_TUNNEL_BAR 165 -#define OPAL_LAST 165 +#define OPAL_NX_COPROC_INIT 167 +#define OPAL_LAST 167 #define QUIESCE_HOLD 1 /* Spin all calls at entry */ #define QUIESCE_REJECT 2 /* Fail all calls with OPAL_BUSY */ diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index e1b2910c6e81..834e7e29f1e4 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -292,6 +292,8 @@ int opal_set_powercap(u32 handle, int token, u32 pcap); int opal_get_power_shift_ratio(u32 handle, int token, u32 *psr); int opal_set_power_shift_ratio(u32 handle, int token, u32 psr); int opal_sensor_group_clear(u32 group_hndl, int token); +int opal_sensor_group_enable(u32 group_hndl, int token, bool enable); +int opal_nx_coproc_init(uint32_t chip_id, uint32_t ct); s64 opal_signal_system_reset(s32 cpu); s64 opal_quiesce(u64 shutdown_type, s32 cpu); @@ -305,6 +307,8 @@ extern void opal_configure_cores(void); extern int opal_get_chars(uint32_t vtermno, char *buf, int count); extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len); +extern int opal_put_chars_atomic(uint32_t vtermno, const char *buf, int total_len); +extern int opal_flush_console(uint32_t vtermno); extern void hvc_opal_init_early(void); @@ -326,6 +330,7 @@ extern int opal_async_wait_response_interruptible(uint64_t token, struct opal_msg *msg); extern int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data); extern int opal_get_sensor_data_u64(u32 sensor_hndl, u64 *sensor_data); +extern int sensor_group_enable(u32 grp_hndl, bool enable); struct rtc_time; extern time64_t opal_get_boot_time(void); diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 6d34bd71139d..ad4f16164619 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -187,11 +187,6 @@ struct paca_struct { u8 subcore_sibling_mask; /* Flag to request this thread not to stop */ atomic_t dont_stop; - /* - * Pointer to an array which contains pointer - * to the sibling threads' paca. - */ - struct paca_struct **thread_sibling_pacas; /* The PSSCR value that the kernel requested before going to stop */ u64 requested_psscr; @@ -252,6 +247,9 @@ struct paca_struct { void *rfi_flush_fallback_area; u64 l1d_flush_size; #endif +#ifdef CONFIG_PPC_PSERIES + u8 *mce_data_buf; /* buffer to hold per cpu rtas errlog */ +#endif /* CONFIG_PPC_PSERIES */ } ____cacheline_aligned; extern void copy_mm_to_paca(struct mm_struct *mm); diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index db7be0779d55..f6a1265face2 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -16,8 +16,7 @@ #else #include <asm/types.h> #endif -#include <asm/asm-compat.h> -#include <asm/kdump.h> +#include <asm/asm-const.h> /* * On regular PPC32 page size is 4K (but we support 4K/16K/64K/256K pages diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h index af04acdb873f..c0ce17e909ef 100644 --- a/arch/powerpc/include/asm/page_64.h +++ b/arch/powerpc/include/asm/page_64.h @@ -10,6 +10,8 @@ * 2 of the License, or (at your option) any later version. */ +#include <asm/asm-const.h> + /* * We always define HW_PAGE_SHIFT to 12 as use of 64K pages remains Linux * specific, every notion of page number shared with the firmware, TCEs, diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h index 5ba80cffb505..20ebf153c871 100644 --- a/arch/powerpc/include/asm/pkeys.h +++ b/arch/powerpc/include/asm/pkeys.h @@ -13,7 +13,8 @@ DECLARE_STATIC_KEY_TRUE(pkey_disabled); extern int pkeys_total; /* total pkeys as per device tree */ -extern u32 initial_allocation_mask; /* bits set for reserved keys */ +extern u32 initial_allocation_mask; /* bits set for the initially allocated keys */ +extern u32 reserved_allocation_mask; /* bits set for reserved keys */ #define ARCH_VM_PKEY_FLAGS (VM_PKEY_BIT0 | VM_PKEY_BIT1 | VM_PKEY_BIT2 | \ VM_PKEY_BIT3 | VM_PKEY_BIT4) @@ -83,19 +84,21 @@ static inline u16 pte_to_pkey_bits(u64 pteflags) #define __mm_pkey_is_allocated(mm, pkey) \ (mm_pkey_allocation_map(mm) & pkey_alloc_mask(pkey)) -#define __mm_pkey_is_reserved(pkey) (initial_allocation_mask & \ +#define __mm_pkey_is_reserved(pkey) (reserved_allocation_mask & \ pkey_alloc_mask(pkey)) static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) { - /* A reserved key is never considered as 'explicitly allocated' */ - return ((pkey < arch_max_pkey()) && - !__mm_pkey_is_reserved(pkey) && - __mm_pkey_is_allocated(mm, pkey)); + if (pkey < 0 || pkey >= arch_max_pkey()) + return false; + + /* Reserved keys are never allocated. */ + if (__mm_pkey_is_reserved(pkey)) + return false; + + return __mm_pkey_is_allocated(mm, pkey); } -extern void __arch_activate_pkey(int pkey); -extern void __arch_deactivate_pkey(int pkey); /* * Returns a positive, 5-bit key on success, or -1 on failure. * Relies on the mmap_sem to protect against concurrency in mm_pkey_alloc() and @@ -124,11 +127,6 @@ static inline int mm_pkey_alloc(struct mm_struct *mm) ret = ffz((u32)mm_pkey_allocation_map(mm)); __mm_pkey_allocated(mm, ret); - /* - * Enable the key in the hardware - */ - if (ret > 0) - __arch_activate_pkey(ret); return ret; } @@ -140,10 +138,6 @@ static inline int mm_pkey_free(struct mm_struct *mm, int pkey) if (!mm_pkey_is_allocated(mm, pkey)) return -EINVAL; - /* - * Disable the key in the hardware - */ - __arch_deactivate_pkey(pkey); __mm_pkey_free(mm, pkey); return 0; @@ -187,6 +181,16 @@ static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, { if (static_branch_likely(&pkey_disabled)) return -EINVAL; + + /* + * userspace should not change pkey-0 permissions. + * pkey-0 is associated with every page in the kernel. + * If userspace denies any permission on pkey-0, the + * kernel cannot operate. + */ + if (pkey == 0) + return init_val ? -EINVAL : 0; + return __arch_set_user_pkey_access(tsk, pkey, init_val); } diff --git a/arch/powerpc/include/asm/pnv-pci.h b/arch/powerpc/include/asm/pnv-pci.h index d2d8c28db336..7f627e3f4da4 100644 --- a/arch/powerpc/include/asm/pnv-pci.h +++ b/arch/powerpc/include/asm/pnv-pci.h @@ -50,13 +50,6 @@ int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, struct pci_dev *dev, int num); void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs, struct pci_dev *dev); - -/* Support for the cxl kernel api on the real PHB (instead of vPHB) */ -int pnv_cxl_enable_phb_kernel_api(struct pci_controller *hose, bool enable); -bool pnv_pci_on_cxl_phb(struct pci_dev *dev); -struct cxl_afu *pnv_cxl_phb_to_afu(struct pci_controller *hose); -void pnv_cxl_phb_set_peer_afu(struct pci_dev *dev, struct cxl_afu *afu); - #endif struct pnv_php_slot { diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 4436887bc415..665af14850e4 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -12,8 +12,7 @@ #ifndef _ASM_POWERPC_PPC_OPCODE_H #define _ASM_POWERPC_PPC_OPCODE_H -#include <linux/stringify.h> -#include <asm/asm-compat.h> +#include <asm/asm-const.h> #define __REG_R0 0 #define __REG_R1 1 @@ -367,6 +366,8 @@ #define PPC_INST_STFDX 0x7c0005ae #define PPC_INST_LVX 0x7c0000ce #define PPC_INST_STVX 0x7c0001ce +#define PPC_INST_VCMPEQUD 0x100000c7 +#define PPC_INST_VCMPEQUB 0x10000006 /* macros to insert fields into opcodes */ #define ___PPC_RA(a) (((a) & 0x1f) << 16) @@ -397,6 +398,7 @@ #define __PPC_BI(s) (((s) & 0x1f) << 16) #define __PPC_CT(t) (((t) & 0x0f) << 21) #define __PPC_SPR(r) ((((r) & 0x1f) << 16) | ((((r) >> 5) & 0x1f) << 11)) +#define __PPC_RC21 (0x1 << 10) /* * Only use the larx hint bit on 64bit CPUs. e500v1/v2 based CPUs will treat a @@ -568,4 +570,12 @@ ((IH & 0x7) << 21)) #define PPC_INVALIDATE_ERAT PPC_SLBIA(7) +#define VCMPEQUD_RC(vrt, vra, vrb) stringify_in_c(.long PPC_INST_VCMPEQUD | \ + ___PPC_RT(vrt) | ___PPC_RA(vra) | \ + ___PPC_RB(vrb) | __PPC_RC21) + +#define VCMPEQUB_RC(vrt, vra, vrb) stringify_in_c(.long PPC_INST_VCMPEQUB | \ + ___PPC_RT(vrt) | ___PPC_RA(vra) | \ + ___PPC_RB(vrb) | __PPC_RC21) + #endif /* _ASM_POWERPC_PPC_OPCODE_H */ diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index 75ece56dcd62..b5d023680801 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -9,6 +9,7 @@ #include <asm/processor.h> #include <asm/ppc-opcode.h> #include <asm/firmware.h> +#include <asm/feature-fixups.h> #ifdef __ASSEMBLY__ diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 5debe337ea9d..52fadded5c1e 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -39,10 +39,9 @@ #endif /* CONFIG_PPC64 */ #ifndef __ASSEMBLY__ -#include <linux/compiler.h> -#include <linux/cache.h> +#include <linux/types.h> +#include <asm/thread_info.h> #include <asm/ptrace.h> -#include <asm/types.h> #include <asm/hw_breakpoint.h> /* We do _not_ want to define new machine types at all, those must die diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h index e4923686e43a..447cbd1bee99 100644 --- a/arch/powerpc/include/asm/ptrace.h +++ b/arch/powerpc/include/asm/ptrace.h @@ -24,6 +24,7 @@ #define _ASM_POWERPC_PTRACE_H #include <uapi/asm/ptrace.h> +#include <asm/asm-const.h> #ifdef __powerpc64__ diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 562568414cf4..486b7c83b8c5 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -13,6 +13,8 @@ #include <linux/stringify.h> #include <asm/cputable.h> +#include <asm/asm-const.h> +#include <asm/feature-fixups.h> /* Pickup Book E specific registers. */ #if defined(CONFIG_BOOKE) || defined(CONFIG_40x) diff --git a/arch/powerpc/include/asm/reg_a2.h b/arch/powerpc/include/asm/reg_a2.h index 3ba9c6f096fc..74c2c57c492a 100644 --- a/arch/powerpc/include/asm/reg_a2.h +++ b/arch/powerpc/include/asm/reg_a2.h @@ -12,6 +12,8 @@ #ifndef __ASM_POWERPC_REG_A2_H__ #define __ASM_POWERPC_REG_A2_H__ +#include <asm/asm-const.h> + #define SPRN_TENSR 0x1b5 #define SPRN_TENS 0x1b6 /* Thread ENable Set */ #define SPRN_TENC 0x1b7 /* Thread ENable Clear */ diff --git a/arch/powerpc/include/asm/reg_fsl_emb.h b/arch/powerpc/include/asm/reg_fsl_emb.h index d7ccf93e6279..a21f529c43d9 100644 --- a/arch/powerpc/include/asm/reg_fsl_emb.h +++ b/arch/powerpc/include/asm/reg_fsl_emb.h @@ -7,6 +7,8 @@ #ifndef __ASM_POWERPC_REG_FSL_EMB_H__ #define __ASM_POWERPC_REG_FSL_EMB_H__ +#include <linux/stringify.h> + #ifndef __ASSEMBLY__ /* Performance Monitor Registers */ #define mfpmr(rn) ({unsigned int rval; \ diff --git a/arch/powerpc/include/asm/security_features.h b/arch/powerpc/include/asm/security_features.h index 44989b22383c..759597bf0fd8 100644 --- a/arch/powerpc/include/asm/security_features.h +++ b/arch/powerpc/include/asm/security_features.h @@ -22,6 +22,7 @@ enum stf_barrier_type { void setup_stf_barrier(void); void do_stf_barrier_fixups(enum stf_barrier_type types); +void setup_count_cache_flush(void); static inline void security_ftr_set(unsigned long feature) { @@ -59,6 +60,9 @@ static inline bool security_ftr_enabled(unsigned long feature) // Indirect branch prediction cache disabled #define SEC_FTR_COUNT_CACHE_DISABLED 0x0000000000000020ull +// bcctr 2,0,0 triggers a hardware assisted count cache flush +#define SEC_FTR_BCCTR_FLUSH_ASSIST 0x0000000000000800ull + // Features indicating need for Spectre/Meltdown mitigations @@ -74,6 +78,9 @@ static inline bool security_ftr_enabled(unsigned long feature) // Firmware configuration indicates user favours security over performance #define SEC_FTR_FAVOUR_SECURITY 0x0000000000000200ull +// Software required to flush count cache on context switch +#define SEC_FTR_FLUSH_COUNT_CACHE 0x0000000000000400ull + // Features enabled by default #define SEC_FTR_DEFAULT \ diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h index 8721fd004291..1a951b00465d 100644 --- a/arch/powerpc/include/asm/setup.h +++ b/arch/powerpc/include/asm/setup.h @@ -52,11 +52,15 @@ enum l1d_flush_type { void setup_rfi_flush(enum l1d_flush_type, bool enable); void do_rfi_flush_fixups(enum l1d_flush_type types); +#ifdef CONFIG_PPC_BARRIER_NOSPEC void setup_barrier_nospec(void); +#else +static inline void setup_barrier_nospec(void) { }; +#endif void do_barrier_nospec_fixups(bool enable); extern bool barrier_nospec_enabled; -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_BARRIER_NOSPEC void do_barrier_nospec_fixups_range(bool enable, void *start, void *end); #else static inline void do_barrier_nospec_fixups_range(bool enable, void *start, void *end) { }; diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index 29ffaabdf75b..95b66a0c639b 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -56,7 +56,6 @@ struct smp_ops_t { int (*cpu_bootable)(unsigned int nr); }; -extern void smp_flush_nmi_ipi(u64 delay_us); extern int smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us); extern int smp_send_safe_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us); extern void smp_send_debugger_break(void); diff --git a/arch/powerpc/include/asm/sparsemem.h b/arch/powerpc/include/asm/sparsemem.h index bc66712bdc3c..28f5dae25db6 100644 --- a/arch/powerpc/include/asm/sparsemem.h +++ b/arch/powerpc/include/asm/sparsemem.h @@ -6,13 +6,20 @@ #ifdef CONFIG_SPARSEMEM /* * SECTION_SIZE_BITS 2^N: how big each section will be - * MAX_PHYSADDR_BITS 2^N: how much physical address space we have * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space */ #define SECTION_SIZE_BITS 24 - -#define MAX_PHYSADDR_BITS 46 +/* + * If we store section details in page->flags we can't increase the MAX_PHYSMEM_BITS + * if we increase SECTIONS_WIDTH we will not store node details in page->flags and + * page_to_nid does a page->section->node lookup + * Hence only increase for VMEMMAP. + */ +#ifdef CONFIG_SPARSEMEM_VMEMMAP +#define MAX_PHYSMEM_BITS 47 +#else #define MAX_PHYSMEM_BITS 46 +#endif #endif /* CONFIG_SPARSEMEM */ diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index 72dc4ddc2972..685c72310f5d 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -24,9 +24,9 @@ #include <asm/paca.h> #include <asm/hvcall.h> #endif -#include <asm/asm-compat.h> #include <asm/synch.h> #include <asm/ppc-opcode.h> +#include <asm/asm-405.h> #ifdef CONFIG_PPC64 /* use 0x800000yy when locked, where yy == CPU number */ diff --git a/arch/powerpc/include/asm/stacktrace.h b/arch/powerpc/include/asm/stacktrace.h new file mode 100644 index 000000000000..6149b53b3bc8 --- /dev/null +++ b/arch/powerpc/include/asm/stacktrace.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Stack trace functions. + * + * Copyright 2018, Murilo Opsfelder Araujo, IBM Corporation. + */ + +#ifndef _ASM_POWERPC_STACKTRACE_H +#define _ASM_POWERPC_STACKTRACE_H + +void show_user_instructions(struct pt_regs *regs); + +#endif /* _ASM_POWERPC_STACKTRACE_H */ diff --git a/arch/powerpc/include/asm/string.h b/arch/powerpc/include/asm/string.h index 9b8cedf618f4..1647de15a31e 100644 --- a/arch/powerpc/include/asm/string.h +++ b/arch/powerpc/include/asm/string.h @@ -50,6 +50,8 @@ static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n) return __memset64(p, v, n * 8); } #else +#define __HAVE_ARCH_STRLEN + extern void *memset16(uint16_t *, uint16_t, __kernel_size_t); #endif #endif /* __KERNEL__ */ diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h index 6ec546090ba1..aca70fb43147 100644 --- a/arch/powerpc/include/asm/synch.h +++ b/arch/powerpc/include/asm/synch.h @@ -3,8 +3,8 @@ #define _ASM_POWERPC_SYNCH_H #ifdef __KERNEL__ -#include <linux/stringify.h> #include <asm/feature-fixups.h> +#include <asm/asm-const.h> #ifndef __ASSEMBLY__ extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup; diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index f308dfeb2746..3c0002044bc9 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -9,6 +9,8 @@ #ifndef _ASM_POWERPC_THREAD_INFO_H #define _ASM_POWERPC_THREAD_INFO_H +#include <asm/asm-const.h> + #ifdef __KERNEL__ #define THREAD_SHIFT CONFIG_THREAD_SHIFT @@ -25,7 +27,6 @@ #include <linux/cache.h> #include <asm/processor.h> #include <asm/page.h> -#include <linux/stringify.h> #include <asm/accounting.h> /* diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h index 9138baccebb0..f0e571b2dc7c 100644 --- a/arch/powerpc/include/asm/tlb.h +++ b/arch/powerpc/include/asm/tlb.h @@ -17,7 +17,6 @@ #include <asm/pgtable.h> #endif #include <asm/pgalloc.h> -#include <asm/tlbflush.h> #ifndef __powerpc64__ #include <asm/page.h> #include <asm/mmu.h> @@ -53,7 +52,8 @@ static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb, if (!tlb->page_size) tlb->page_size = page_size; else if (tlb->page_size != page_size) { - tlb_flush_mmu(tlb); + if (!tlb->fullmm) + tlb_flush_mmu(tlb); /* * update the page size after flush for the new * mmu_gather. diff --git a/arch/powerpc/include/asm/tlbflush.h b/arch/powerpc/include/asm/tlbflush.h index 7d5a157c7832..61fba43bf8b2 100644 --- a/arch/powerpc/include/asm/tlbflush.h +++ b/arch/powerpc/include/asm/tlbflush.h @@ -1,87 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_TLBFLUSH_H #define _ASM_POWERPC_TLBFLUSH_H -/* - * TLB flushing: - * - * - flush_tlb_mm(mm) flushes the specified mm context TLB's - * - flush_tlb_page(vma, vmaddr) flushes one page - * - local_flush_tlb_mm(mm, full) flushes the specified mm context on - * the local processor - * - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor - * - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB - * - flush_tlb_range(vma, start, end) flushes a range of pages - * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#ifdef __KERNEL__ - -#ifdef CONFIG_PPC_MMU_NOHASH -/* - * TLB flushing for software loaded TLB chips - * - * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range & - * flush_tlb_kernel_range are best implemented as tlbia vs - * specific tlbie's - */ - -struct vm_area_struct; -struct mm_struct; - -#define MMU_NO_CONTEXT ((unsigned int)-1) - -extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, - unsigned long end); -extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); - -extern void local_flush_tlb_mm(struct mm_struct *mm); -extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); - -extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, - int tsize, int ind); - -#ifdef CONFIG_SMP -extern void flush_tlb_mm(struct mm_struct *mm); -extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); -extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, - int tsize, int ind); -#else -#define flush_tlb_mm(mm) local_flush_tlb_mm(mm) -#define flush_tlb_page(vma,addr) local_flush_tlb_page(vma,addr) -#define __flush_tlb_page(mm,addr,p,i) __local_flush_tlb_page(mm,addr,p,i) -#endif - -#elif defined(CONFIG_PPC_STD_MMU_32) - -#define MMU_NO_CONTEXT (0) -/* - * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx - */ -extern void flush_tlb_mm(struct mm_struct *mm); -extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); -extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr); -extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, - unsigned long end); -extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); -static inline void local_flush_tlb_page(struct vm_area_struct *vma, - unsigned long vmaddr) -{ - flush_tlb_page(vma, vmaddr); -} -static inline void local_flush_tlb_mm(struct mm_struct *mm) -{ - flush_tlb_mm(mm); -} - -#elif defined(CONFIG_PPC_BOOK3S_64) -#include <asm/book3s/64/tlbflush.h> +#ifdef CONFIG_PPC_BOOK3S +#include <asm/book3s/tlbflush.h> #else -#error Unsupported MMU type -#endif +#include <asm/nohash/tlbflush.h> +#endif /* !CONFIG_PPC_BOOK3S */ -#endif /*__KERNEL__ */ #endif /* _ASM_POWERPC_TLBFLUSH_H */ diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 468653ce844c..bac225bb7f64 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -2,7 +2,6 @@ #ifndef _ARCH_POWERPC_UACCESS_H #define _ARCH_POWERPC_UACCESS_H -#include <asm/asm-compat.h> #include <asm/ppc_asm.h> #include <asm/processor.h> #include <asm/page.h> @@ -250,10 +249,17 @@ do { \ } \ } while (0) +/* + * This is a type: either unsigned long, if the argument fits into + * that type, or otherwise unsigned long long. + */ +#define __long_type(x) \ + __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL)) + #define __get_user_nocheck(x, ptr, size) \ ({ \ long __gu_err; \ - unsigned long __gu_val; \ + __long_type(*(ptr)) __gu_val; \ const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ __chk_user_ptr(ptr); \ if (!is_kernel_addr((unsigned long)__gu_addr)) \ @@ -267,7 +273,7 @@ do { \ #define __get_user_check(x, ptr, size) \ ({ \ long __gu_err = -EFAULT; \ - unsigned long __gu_val = 0; \ + __long_type(*(ptr)) __gu_val = 0; \ const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ might_fault(); \ if (access_ok(VERIFY_READ, __gu_addr, (size))) { \ @@ -281,7 +287,7 @@ do { \ #define __get_user_nosleep(x, ptr, size) \ ({ \ long __gu_err; \ - unsigned long __gu_val; \ + __long_type(*(ptr)) __gu_val; \ const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \ __chk_user_ptr(ptr); \ barrier_nospec(); \ diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h index 8d1a2792484f..3c704f5dd3ae 100644 --- a/arch/powerpc/include/asm/xive.h +++ b/arch/powerpc/include/asm/xive.h @@ -87,7 +87,6 @@ extern int xive_smp_prepare_cpu(unsigned int cpu); extern void xive_smp_setup_cpu(void); extern void xive_smp_disable_cpu(void); extern void xive_teardown_cpu(void); -extern void xive_kexec_teardown_cpu(int secondary); extern void xive_shutdown(void); extern void xive_flush_interrupt(void); diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 2b4c40b255e4..3b66f2c19c84 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -7,10 +7,10 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_PPC64 CFLAGS_prom_init.o += $(NO_MINIMAL_TOC) endif -ifeq ($(CONFIG_PPC32),y) +ifdef CONFIG_PPC32 CFLAGS_prom_init.o += -fPIC CFLAGS_btext.o += -fPIC endif @@ -42,9 +42,10 @@ obj-$(CONFIG_VDSO32) += vdso32/ obj-$(CONFIG_PPC_WATCHDOG) += watchdog.o obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_ppc970.o cpu_setup_pa6t.o -obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o security.o +obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_book3e.o +obj-$(CONFIG_PPC_BARRIER_NOSPEC) += security.o obj-$(CONFIG_PPC64) += vdso64/ obj-$(CONFIG_ALTIVEC) += vecemu.o obj-$(CONFIG_PPC_970_NAP) += idle_power4.o @@ -62,13 +63,13 @@ obj-$(CONFIG_EEH) += eeh.o eeh_pe.o eeh_dev.o eeh_cache.o \ obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_FA_DUMP) += fadump.o -ifeq ($(CONFIG_PPC32),y) +ifdef CONFIG_PPC32 obj-$(CONFIG_E500) += idle_e500.o endif obj-$(CONFIG_6xx) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o obj-$(CONFIG_TAU) += tau_6xx.o obj-$(CONFIG_HIBERNATION) += swsusp.o suspend.o -ifeq ($(CONFIG_FSL_BOOKE),y) +ifdef CONFIG_FSL_BOOKE obj-$(CONFIG_HIBERNATION) += swsusp_booke.o else obj-$(CONFIG_HIBERNATION) += swsusp_$(BITS).o @@ -109,9 +110,11 @@ obj-$(CONFIG_PCI_MSI) += msi.o obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o crash.o \ machine_kexec_$(BITS).o obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file_$(BITS).o kexec_elf_$(BITS).o -ifeq ($(CONFIG_HAVE_IMA_KEXEC)$(CONFIG_IMA),yy) +ifdef CONFIG_HAVE_IMA_KEXEC +ifdef CONFIG_IMA obj-y += ima_kexec.o endif +endif obj-$(CONFIG_AUDIT) += audit.o obj64-$(CONFIG_AUDIT) += compat_audit.o @@ -164,7 +167,7 @@ PHONY += systbl_chk systbl_chk: $(src)/systbl_chk.sh $(obj)/systbl_chk.i $(call cmd,systbl_chk) -ifeq ($(CONFIG_PPC_OF_BOOT_TRAMPOLINE),y) +ifdef CONFIG_PPC_OF_BOOT_TRAMPOLINE $(obj)/built-in.a: prom_init_check quiet_cmd_prom_init_check = CALL $< diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 0a0544335950..89cf15566c4e 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -766,7 +766,6 @@ int main(void) OFFSET(PACA_THREAD_IDLE_STATE, paca_struct, thread_idle_state); OFFSET(PACA_THREAD_MASK, paca_struct, thread_mask); OFFSET(PACA_SUBCORE_SIBLING_MASK, paca_struct, subcore_sibling_mask); - OFFSET(PACA_SIBLING_PACA_PTRS, paca_struct, thread_sibling_pacas); OFFSET(PACA_REQ_PSSCR, paca_struct, requested_psscr); OFFSET(PACA_DONT_STOP, paca_struct, dont_stop); #define STOP_SPR(x, f) OFFSET(x, paca_struct, stop_sprs.f) diff --git a/arch/powerpc/kernel/cpu_setup_6xx.S b/arch/powerpc/kernel/cpu_setup_6xx.S index a9f3970693e1..fa3c2c91290c 100644 --- a/arch/powerpc/kernel/cpu_setup_6xx.S +++ b/arch/powerpc/kernel/cpu_setup_6xx.S @@ -16,6 +16,7 @@ #include <asm/asm-offsets.h> #include <asm/cache.h> #include <asm/mmu.h> +#include <asm/feature-fixups.h> _GLOBAL(__setup_cpu_603) mflr r5 diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index c8fc9691f8c7..2da01340c84c 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -447,25 +447,6 @@ static struct cpu_spec __initdata cpu_specs[] = { .machine_check_early = __machine_check_early_realmode_p8, .platform = "power8", }, - { /* Power8 DD1: Does not support doorbell IPIs */ - .pvr_mask = 0xffffff00, - .pvr_value = 0x004d0100, - .cpu_name = "POWER8 (raw)", - .cpu_features = CPU_FTRS_POWER8_DD1, - .cpu_user_features = COMMON_USER_POWER8, - .cpu_user_features2 = COMMON_USER2_POWER8, - .mmu_features = MMU_FTRS_POWER8, - .icache_bsize = 128, - .dcache_bsize = 128, - .num_pmcs = 6, - .pmc_type = PPC_PMC_IBM, - .oprofile_cpu_type = "ppc64/power8", - .oprofile_type = PPC_OPROFILE_INVALID, - .cpu_setup = __setup_cpu_power8, - .cpu_restore = __restore_cpu_power8, - .machine_check_early = __machine_check_early_realmode_p8, - .platform = "power8", - }, { /* Power8 */ .pvr_mask = 0xffff0000, .pvr_value = 0x004d0000, @@ -485,25 +466,6 @@ static struct cpu_spec __initdata cpu_specs[] = { .machine_check_early = __machine_check_early_realmode_p8, .platform = "power8", }, - { /* Power9 DD1*/ - .pvr_mask = 0xffffff00, - .pvr_value = 0x004e0100, - .cpu_name = "POWER9 (raw)", - .cpu_features = CPU_FTRS_POWER9_DD1, - .cpu_user_features = COMMON_USER_POWER9, - .cpu_user_features2 = COMMON_USER2_POWER9, - .mmu_features = MMU_FTRS_POWER9, - .icache_bsize = 128, - .dcache_bsize = 128, - .num_pmcs = 6, - .pmc_type = PPC_PMC_IBM, - .oprofile_cpu_type = "ppc64/power9", - .oprofile_type = PPC_OPROFILE_INVALID, - .cpu_setup = __setup_cpu_power9, - .cpu_restore = __restore_cpu_power9, - .machine_check_early = __machine_check_early_realmode_p9, - .platform = "power9", - }, { /* Power9 DD2.0 */ .pvr_mask = 0xffffefff, .pvr_value = 0x004e0200, diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c index 17c8b99680f2..43a3ce2301e8 100644 --- a/arch/powerpc/kernel/crash.c +++ b/arch/powerpc/kernel/crash.c @@ -23,7 +23,6 @@ #include <asm/processor.h> #include <asm/machdep.h> #include <asm/kexec.h> -#include <asm/kdump.h> #include <asm/prom.h> #include <asm/smp.h> #include <asm/setjmp.h> diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c index 96dd3d871986..f432054234a4 100644 --- a/arch/powerpc/kernel/dt_cpu_ftrs.c +++ b/arch/powerpc/kernel/dt_cpu_ftrs.c @@ -701,9 +701,7 @@ static __init void cpufeatures_cpu_quirks(void) /* * Not all quirks can be derived from the cpufeatures device tree. */ - if ((version & 0xffffff00) == 0x004e0100) - cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD1; - else if ((version & 0xffffefff) == 0x004e0200) + if ((version & 0xffffefff) == 0x004e0200) ; /* DD2.0 has no feature flag */ else if ((version & 0xffffefff) == 0x004e0201) cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD2_1; diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 5746809cfaad..6ebba3e48b01 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -1087,7 +1087,7 @@ static int eeh_init(void) if (eeh_enabled()) pr_info("EEH: PCI Enhanced I/O Error Handling Enabled\n"); - else + else if (!eeh_has_flag(EEH_POSTPONED_PROBE)) pr_info("EEH: No capable adapters found\n"); return ret; diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 973577f2141c..e58c3f467db5 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -33,6 +33,9 @@ #include <asm/unistd.h> #include <asm/ptrace.h> #include <asm/export.h> +#include <asm/asm-405.h> +#include <asm/feature-fixups.h> +#include <asm/barrier.h> /* * MSR_KERNEL is > 0x10000 on 4xx/Book-E since it include MSR_CE. @@ -358,6 +361,15 @@ syscall_dotrace_cont: ori r10,r10,sys_call_table@l slwi r0,r0,2 bge- 66f + + barrier_nospec_asm + /* + * Prevent the load of the handler below (based on the user-passed + * system call number) being speculatively executed until the test + * against NR_syscalls and branch to .66f above has + * committed. + */ + lwzx r10,r10,r0 /* Fetch system call handler [ptr] */ mtlr r10 addi r9,r1,STACK_FRAME_OVERHEAD diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 729e9ef4d3bb..2206912ea4f0 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -25,6 +25,7 @@ #include <asm/page.h> #include <asm/mmu.h> #include <asm/thread_info.h> +#include <asm/code-patching-asm.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/cputable.h> @@ -38,11 +39,13 @@ #include <asm/ppc-opcode.h> #include <asm/barrier.h> #include <asm/export.h> +#include <asm/asm-compat.h> #ifdef CONFIG_PPC_BOOK3S #include <asm/exception-64s.h> #else #include <asm/exception-64e.h> #endif +#include <asm/feature-fixups.h> /* * System calls. @@ -504,6 +507,57 @@ _GLOBAL(ret_from_kernel_thread) li r3,0 b .Lsyscall_exit +#ifdef CONFIG_PPC_BOOK3S_64 + +#define FLUSH_COUNT_CACHE \ +1: nop; \ + patch_site 1b, patch__call_flush_count_cache + + +#define BCCTR_FLUSH .long 0x4c400420 + +.macro nops number + .rept \number + nop + .endr +.endm + +.balign 32 +.global flush_count_cache +flush_count_cache: + /* Save LR into r9 */ + mflr r9 + + .rept 64 + bl .+4 + .endr + b 1f + nops 6 + + .balign 32 + /* Restore LR */ +1: mtlr r9 + li r9,0x7fff + mtctr r9 + + BCCTR_FLUSH + +2: nop + patch_site 2b patch__flush_count_cache_return + + nops 3 + + .rept 278 + .balign 32 + BCCTR_FLUSH + nops 7 + .endr + + blr +#else +#define FLUSH_COUNT_CACHE +#endif /* CONFIG_PPC_BOOK3S_64 */ + /* * This routine switches between two different tasks. The process * state of one is saved on its kernel stack. Then the state @@ -535,6 +589,8 @@ _GLOBAL(_switch) std r23,_CCR(r1) std r1,KSP(r3) /* Set old stack pointer */ + FLUSH_COUNT_CACHE + /* * On SMP kernels, care must be taken because a task may be * scheduled off CPUx and on to CPUy. Memory ordering must be @@ -993,6 +1049,14 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) std r4,_TRAP(r1) /* + * PACA_IRQ_HARD_DIS won't always be set here, so set it now + * to reconcile the IRQ state. Tracing is already accounted for. + */ + lbz r4,PACAIRQHAPPENED(r13) + ori r4,r4,PACA_IRQ_HARD_DIS + stb r4,PACAIRQHAPPENED(r13) + + /* * Then find the right handler and call it. Interrupts are * still soft-disabled and we keep them that way. */ diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 9b6e653e501a..6d6e144a28ce 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -27,6 +27,7 @@ #include <asm/hw_irq.h> #include <asm/kvm_asm.h> #include <asm/kvm_booke_hv_asm.h> +#include <asm/feature-fixups.h> /* XXX This will ultimately add space for a special exception save * structure used to save things like SRR0/SRR1, SPRGs, MAS, etc... @@ -949,7 +950,11 @@ kernel_dbg_exc: .macro masked_interrupt_book3e paca_irq full_mask lbz r10,PACAIRQHAPPENED(r13) + .if \full_mask == 1 + ori r10,r10,\paca_irq | PACA_IRQ_HARD_DIS + .else ori r10,r10,\paca_irq + .endif stb r10,PACAIRQHAPPENED(r13) .if \full_mask == 1 diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 285c6465324a..ea04dfb8c092 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -18,6 +18,7 @@ #include <asm/ptrace.h> #include <asm/cpuidle.h> #include <asm/head-64.h> +#include <asm/feature-fixups.h> /* * There are a few constraints to be concerned with. @@ -126,8 +127,8 @@ EXC_REAL_BEGIN(system_reset, 0x100, 0x100) * MSR_RI is not enabled, because PACA_EXNMI and nmi stack is * being used, so a nested NMI exception would corrupt it. */ - EXCEPTION_PROLOG_PSERIES_NORI(PACA_EXNMI, system_reset_common, EXC_STD, - IDLETEST, 0x100) + EXCEPTION_PROLOG_NORI(PACA_EXNMI, system_reset_common, EXC_STD, + IDLETEST, 0x100) EXC_REAL_END(system_reset, 0x100, 0x100) EXC_VIRT_NONE(0x4100, 0x100) @@ -230,8 +231,8 @@ EXC_COMMON_BEGIN(system_reset_common) TRAMP_REAL_BEGIN(system_reset_fwnmi) SET_SCRATCH0(r13) /* save r13 */ /* See comment at system_reset exception */ - EXCEPTION_PROLOG_PSERIES_NORI(PACA_EXNMI, system_reset_common, - EXC_STD, NOTEST, 0x100) + EXCEPTION_PROLOG_NORI(PACA_EXNMI, system_reset_common, EXC_STD, + NOTEST, 0x100) #endif /* CONFIG_PPC_PSERIES */ @@ -276,9 +277,7 @@ BEGIN_FTR_SECTION * * This interrupt can wake directly from idle. If that is the case, * the machine check is handled then the idle wakeup code is called - * to restore state. In that case, the POWER9 DD1 idle PACA workaround - * is not applied in the early machine check code, which will cause - * bugs. + * to restore state. */ mr r11,r1 /* Save r1 */ lhz r10,PACA_IN_MCE(r13) @@ -339,7 +338,7 @@ machine_check_pSeries_0: * nested machine check corrupts it. machine_check_common enables * MSR_RI. */ - EXCEPTION_PROLOG_PSERIES_1_NORI(machine_check_common, EXC_STD) + EXCEPTION_PROLOG_2_NORI(machine_check_common, EXC_STD) TRAMP_KVM_SKIP(PACA_EXMC, 0x200) @@ -769,13 +768,9 @@ EXC_REAL_BEGIN(hardware_interrupt, 0x500, 0x100) .globl hardware_interrupt_hv; hardware_interrupt_hv: BEGIN_FTR_SECTION - _MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt_common, - EXC_HV, SOFTEN_TEST_HV, - IRQS_DISABLED) + MASKABLE_EXCEPTION_HV(0x500, hardware_interrupt_common, IRQS_DISABLED) FTR_SECTION_ELSE - _MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt_common, - EXC_STD, SOFTEN_TEST_PR, - IRQS_DISABLED) + MASKABLE_EXCEPTION(0x500, hardware_interrupt_common, IRQS_DISABLED) ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206) EXC_REAL_END(hardware_interrupt, 0x500, 0x100) @@ -783,13 +778,11 @@ EXC_VIRT_BEGIN(hardware_interrupt, 0x4500, 0x100) .globl hardware_interrupt_relon_hv; hardware_interrupt_relon_hv: BEGIN_FTR_SECTION - _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt_common, - EXC_HV, SOFTEN_TEST_HV, - IRQS_DISABLED) + MASKABLE_RELON_EXCEPTION_HV(0x500, hardware_interrupt_common, + IRQS_DISABLED) FTR_SECTION_ELSE - _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt_common, - EXC_STD, SOFTEN_TEST_PR, - IRQS_DISABLED) + __MASKABLE_RELON_EXCEPTION(0x500, hardware_interrupt_common, + EXC_STD, SOFTEN_TEST_PR, IRQS_DISABLED) ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) EXC_VIRT_END(hardware_interrupt, 0x4500, 0x100) @@ -1328,7 +1321,7 @@ EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x100) #endif KVMTEST_HV(0x1500) - EXCEPTION_PROLOG_PSERIES_1(denorm_common, EXC_HV) + EXCEPTION_PROLOG_2(denorm_common, EXC_HV) EXC_REAL_END(denorm_exception_hv, 0x1500, 0x100) #ifdef CONFIG_PPC_DENORMALISATION @@ -1448,7 +1441,7 @@ EXC_VIRT_NONE(0x5800, 0x100) std r12,PACA_EXGEN+EX_R12(r13); \ GET_SCRATCH0(r10); \ std r10,PACA_EXGEN+EX_R13(r13); \ - EXCEPTION_PROLOG_PSERIES_1(soft_nmi_common, _H) + EXCEPTION_PROLOG_2(soft_nmi_common, _H) /* * Branch to soft_nmi_interrupt using the emergency stack. The emergency @@ -1500,7 +1493,10 @@ masked_##_H##interrupt: \ mfspr r10,SPRN_##_H##SRR1; \ xori r10,r10,MSR_EE; /* clear MSR_EE */ \ mtspr SPRN_##_H##SRR1,r10; \ -2: mtcrf 0x80,r9; \ + ori r11,r11,PACA_IRQ_HARD_DIS; \ + stb r11,PACAIRQHAPPENED(r13); \ +2: /* done */ \ + mtcrf 0x80,r9; \ std r1,PACAR1(r13); \ ld r9,PACA_EXGEN+EX_R9(r13); \ ld r10,PACA_EXGEN+EX_R10(r13); \ @@ -1526,6 +1522,8 @@ TRAMP_REAL_BEGIN(stf_barrier_fallback) TRAMP_REAL_BEGIN(rfi_flush_fallback) SET_SCRATCH0(r13); GET_PACA(r13); + std r1,PACA_EXRFI+EX_R12(r13) + ld r1,PACAKSAVE(r13) std r9,PACA_EXRFI+EX_R9(r13) std r10,PACA_EXRFI+EX_R10(r13) std r11,PACA_EXRFI+EX_R11(r13) @@ -1560,12 +1558,15 @@ TRAMP_REAL_BEGIN(rfi_flush_fallback) ld r9,PACA_EXRFI+EX_R9(r13) ld r10,PACA_EXRFI+EX_R10(r13) ld r11,PACA_EXRFI+EX_R11(r13) + ld r1,PACA_EXRFI+EX_R12(r13) GET_SCRATCH0(r13); rfid TRAMP_REAL_BEGIN(hrfi_flush_fallback) SET_SCRATCH0(r13); GET_PACA(r13); + std r1,PACA_EXRFI+EX_R12(r13) + ld r1,PACAKSAVE(r13) std r9,PACA_EXRFI+EX_R9(r13) std r10,PACA_EXRFI+EX_R10(r13) std r11,PACA_EXRFI+EX_R11(r13) @@ -1600,6 +1601,7 @@ TRAMP_REAL_BEGIN(hrfi_flush_fallback) ld r9,PACA_EXRFI+EX_R9(r13) ld r10,PACA_EXRFI+EX_R10(r13) ld r11,PACA_EXRFI+EX_R11(r13) + ld r1,PACA_EXRFI+EX_R12(r13) GET_SCRATCH0(r13); hrfid diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index 07e8396d472b..986ec476fd5d 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -47,8 +47,10 @@ static struct fadump_mem_struct fdm; static const struct fadump_mem_struct *fdm_active; static DEFINE_MUTEX(fadump_mutex); -struct fad_crash_memory_ranges crash_memory_ranges[INIT_CRASHMEM_RANGES]; +struct fad_crash_memory_ranges *crash_memory_ranges; +int crash_memory_ranges_size; int crash_mem_ranges; +int max_crash_mem_ranges; /* Scan the Firmware Assisted dump configuration details. */ int __init early_init_dt_scan_fw_dump(unsigned long node, @@ -868,38 +870,107 @@ static int __init process_fadump(const struct fadump_mem_struct *fdm_active) return 0; } -static inline void fadump_add_crash_memory(unsigned long long base, - unsigned long long end) +static void free_crash_memory_ranges(void) +{ + kfree(crash_memory_ranges); + crash_memory_ranges = NULL; + crash_memory_ranges_size = 0; + max_crash_mem_ranges = 0; +} + +/* + * Allocate or reallocate crash memory ranges array in incremental units + * of PAGE_SIZE. + */ +static int allocate_crash_memory_ranges(void) { + struct fad_crash_memory_ranges *new_array; + u64 new_size; + + new_size = crash_memory_ranges_size + PAGE_SIZE; + pr_debug("Allocating %llu bytes of memory for crash memory ranges\n", + new_size); + + new_array = krealloc(crash_memory_ranges, new_size, GFP_KERNEL); + if (new_array == NULL) { + pr_err("Insufficient memory for setting up crash memory ranges\n"); + free_crash_memory_ranges(); + return -ENOMEM; + } + + crash_memory_ranges = new_array; + crash_memory_ranges_size = new_size; + max_crash_mem_ranges = (new_size / + sizeof(struct fad_crash_memory_ranges)); + return 0; +} + +static inline int fadump_add_crash_memory(unsigned long long base, + unsigned long long end) +{ + u64 start, size; + bool is_adjacent = false; + if (base == end) - return; + return 0; + + /* + * Fold adjacent memory ranges to bring down the memory ranges/ + * PT_LOAD segments count. + */ + if (crash_mem_ranges) { + start = crash_memory_ranges[crash_mem_ranges - 1].base; + size = crash_memory_ranges[crash_mem_ranges - 1].size; + + if ((start + size) == base) + is_adjacent = true; + } + if (!is_adjacent) { + /* resize the array on reaching the limit */ + if (crash_mem_ranges == max_crash_mem_ranges) { + int ret; + + ret = allocate_crash_memory_ranges(); + if (ret) + return ret; + } + start = base; + crash_memory_ranges[crash_mem_ranges].base = start; + crash_mem_ranges++; + } + + crash_memory_ranges[crash_mem_ranges - 1].size = (end - start); pr_debug("crash_memory_range[%d] [%#016llx-%#016llx], %#llx bytes\n", - crash_mem_ranges, base, end - 1, (end - base)); - crash_memory_ranges[crash_mem_ranges].base = base; - crash_memory_ranges[crash_mem_ranges].size = end - base; - crash_mem_ranges++; + (crash_mem_ranges - 1), start, end - 1, (end - start)); + return 0; } -static void fadump_exclude_reserved_area(unsigned long long start, +static int fadump_exclude_reserved_area(unsigned long long start, unsigned long long end) { unsigned long long ra_start, ra_end; + int ret = 0; ra_start = fw_dump.reserve_dump_area_start; ra_end = ra_start + fw_dump.reserve_dump_area_size; if ((ra_start < end) && (ra_end > start)) { if ((start < ra_start) && (end > ra_end)) { - fadump_add_crash_memory(start, ra_start); - fadump_add_crash_memory(ra_end, end); + ret = fadump_add_crash_memory(start, ra_start); + if (ret) + return ret; + + ret = fadump_add_crash_memory(ra_end, end); } else if (start < ra_start) { - fadump_add_crash_memory(start, ra_start); + ret = fadump_add_crash_memory(start, ra_start); } else if (ra_end < end) { - fadump_add_crash_memory(ra_end, end); + ret = fadump_add_crash_memory(ra_end, end); } } else - fadump_add_crash_memory(start, end); + ret = fadump_add_crash_memory(start, end); + + return ret; } static int fadump_init_elfcore_header(char *bufp) @@ -939,13 +1010,22 @@ static int fadump_init_elfcore_header(char *bufp) * Traverse through memblock structure and setup crash memory ranges. These * ranges will be used create PT_LOAD program headers in elfcore header. */ -static void fadump_setup_crash_memory_ranges(void) +static int fadump_setup_crash_memory_ranges(void) { struct memblock_region *reg; unsigned long long start, end; + int ret; pr_debug("Setup crash memory ranges.\n"); crash_mem_ranges = 0; + + /* allocate memory for crash memory ranges for the first time */ + if (!max_crash_mem_ranges) { + ret = allocate_crash_memory_ranges(); + if (ret) + return ret; + } + /* * add the first memory chunk (RMA_START through boot_memory_size) as * a separate memory chunk. The reason is, at the time crash firmware @@ -953,7 +1033,9 @@ static void fadump_setup_crash_memory_ranges(void) * specified during fadump registration. We need to create a separate * program header for this chunk with the correct offset. */ - fadump_add_crash_memory(RMA_START, fw_dump.boot_memory_size); + ret = fadump_add_crash_memory(RMA_START, fw_dump.boot_memory_size); + if (ret) + return ret; for_each_memblock(memory, reg) { start = (unsigned long long)reg->base; @@ -973,8 +1055,12 @@ static void fadump_setup_crash_memory_ranges(void) } /* add this range excluding the reserved dump area. */ - fadump_exclude_reserved_area(start, end); + ret = fadump_exclude_reserved_area(start, end); + if (ret) + return ret; } + + return 0; } /* @@ -1097,6 +1183,7 @@ static int register_fadump(void) { unsigned long addr; void *vaddr; + int ret; /* * If no memory is reserved then we can not register for firmware- @@ -1105,7 +1192,9 @@ static int register_fadump(void) if (!fw_dump.reserve_dump_area_size) return -ENODEV; - fadump_setup_crash_memory_ranges(); + ret = fadump_setup_crash_memory_ranges(); + if (ret) + return ret; addr = be64_to_cpu(fdm.rmr_region.destination_address) + be64_to_cpu(fdm.rmr_region.source_len); /* Initialize fadump crash info header. */ @@ -1183,6 +1272,7 @@ void fadump_cleanup(void) } else if (fw_dump.dump_registered) { /* Un-register Firmware-assisted dump if it was registered. */ fadump_unregister_dump(&fdm); + free_crash_memory_ranges(); } } diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index 6c509f39bbde..529dcc21c3f9 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -25,6 +25,8 @@ #include <asm/asm-offsets.h> #include <asm/ptrace.h> #include <asm/export.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> #ifdef CONFIG_VSX #define __REST_32FPVSRS(n,c,base) \ diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 29b2fed93289..61ca27929355 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -35,6 +35,7 @@ #include <asm/bug.h> #include <asm/kvm_book3s_asm.h> #include <asm/export.h> +#include <asm/feature-fixups.h> /* 601 only have IBAT; cr0.eq is set on 601 when using this macro */ #define LOAD_BAT(n, reg, RA, RB) \ diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S index 41374a468d1c..b19d78410511 100644 --- a/arch/powerpc/kernel/head_40x.S +++ b/arch/powerpc/kernel/head_40x.S @@ -42,6 +42,7 @@ #include <asm/asm-offsets.h> #include <asm/ptrace.h> #include <asm/export.h> +#include <asm/asm-405.h> /* As with the other PowerPC ports, it is expected that when code * execution begins here, the following registers contain valid, yet diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 6eca15f25c73..4898e9491a1c 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -44,6 +44,7 @@ #include <asm/cputhreads.h> #include <asm/ppc-opcode.h> #include <asm/export.h> +#include <asm/feature-fixups.h> /* The physical memory is laid out such that the secondary processor * spin code sits at 0x0000...0x00ff. On server, the vectors follow diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 6cab07e76732..6582f824d620 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -30,7 +30,6 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/ptrace.h> -#include <asm/fixmap.h> #include <asm/export.h> #if CONFIG_TASK_SIZE <= 0x80000000 && CONFIG_PAGE_OFFSET >= 0x80000000 @@ -873,6 +872,10 @@ start_here: li r0,0 stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1) + lis r6, swapper_pg_dir@ha + tophys(r6,r6) + mtspr SPRN_M_TW, r6 + bl early_init /* We have to do this with MMU on */ /* @@ -893,9 +896,6 @@ start_here: * init's THREAD like the context switch code does, but this is * easier......until someone changes init's static structures. */ - lis r6, swapper_pg_dir@ha - tophys(r6,r6) - mtspr SPRN_M_TW, r6 lis r4,2f@h ori r4,r4,2f@l tophys(r4,r4) diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index bf4c6021515f..e2750b856c8f 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -43,6 +43,7 @@ #include <asm/cache.h> #include <asm/ptrace.h> #include <asm/export.h> +#include <asm/feature-fixups.h> #include "head_booke.h" /* As with the other PowerPC ports, it is expected that when code diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/idle_6xx.S index 1686916cc7f0..ff026c9d3cab 100644 --- a/arch/powerpc/kernel/idle_6xx.S +++ b/arch/powerpc/kernel/idle_6xx.S @@ -20,6 +20,7 @@ #include <asm/thread_info.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> +#include <asm/feature-fixups.h> .text diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S index 2b269315d377..4e0d94d02030 100644 --- a/arch/powerpc/kernel/idle_book3e.S +++ b/arch/powerpc/kernel/idle_book3e.S @@ -36,7 +36,7 @@ _GLOBAL(\name) */ lbz r3,PACAIRQHAPPENED(r13) cmpwi cr0,r3,0 - bnelr + bne 2f /* Now we are going to mark ourselves as soft and hard enabled in * order to be able to take interrupts while asleep. We inform lockdep @@ -72,6 +72,11 @@ _GLOBAL(\name) wrteei 1 \loop +2: + lbz r10,PACAIRQHAPPENED(r13) + ori r10,r10,PACA_IRQ_HARD_DIS + stb r10,PACAIRQHAPPENED(r13) + blr .endm .macro BOOK3E_IDLE_LOOP diff --git a/arch/powerpc/kernel/idle_book3s.S b/arch/powerpc/kernel/idle_book3s.S index 689306118b48..7f5ac2e8581b 100644 --- a/arch/powerpc/kernel/idle_book3s.S +++ b/arch/powerpc/kernel/idle_book3s.S @@ -23,6 +23,8 @@ #include <asm/exception-64s.h> #include <asm/book3s/64/mmu-hash.h> #include <asm/mmu.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> #undef DEBUG @@ -469,43 +471,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_P9_TM_XER_SO_BUG) #endif /* - * On waking up from stop 0,1,2 with ESL=1 on POWER9 DD1, - * HSPRG0 will be set to the HSPRG0 value of one of the - * threads in this core. Thus the value we have in r13 - * may not be this thread's paca pointer. - * - * Fortunately, the TIR remains invariant. Since this thread's - * paca pointer is recorded in all its sibling's paca, we can - * correctly recover this thread's paca pointer if we - * know the index of this thread in the core. - * - * This index can be obtained from the TIR. - * - * i.e, thread's position in the core = TIR. - * If this value is i, then this thread's paca is - * paca->thread_sibling_pacas[i]. - */ -power9_dd1_recover_paca: - mfspr r4, SPRN_TIR - /* - * Since each entry in thread_sibling_pacas is 8 bytes - * we need to left-shift by 3 bits. Thus r4 = i * 8 - */ - sldi r4, r4, 3 - /* Get &paca->thread_sibling_pacas[0] in r5 */ - ld r5, PACA_SIBLING_PACA_PTRS(r13) - /* Load paca->thread_sibling_pacas[i] into r13 */ - ldx r13, r4, r5 - SET_PACA(r13) - /* - * Indicate that we have lost NVGPR state - * which needs to be restored from the stack. - */ - li r3, 1 - stb r3,PACA_NAPSTATELOST(r13) - blr - -/* * Called from machine check handler for powersave wakeups. * Low level machine check processing has already been done. Now just * go through the wake up path to get everything in order. @@ -539,9 +504,6 @@ pnv_powersave_wakeup: ld r2, PACATOC(r13) BEGIN_FTR_SECTION -BEGIN_FTR_SECTION_NESTED(70) - bl power9_dd1_recover_paca -END_FTR_SECTION_NESTED_IFSET(CPU_FTR_POWER9_DD1, 70) bl pnv_restore_hyp_resource_arch300 FTR_SECTION_ELSE bl pnv_restore_hyp_resource_arch207 @@ -604,22 +566,12 @@ END_FTR_SECTION_IFCLR(CPU_FTR_POWER9_DD2_1) LOAD_REG_ADDRBASE(r5,pnv_first_deep_stop_state) ld r4,ADDROFF(pnv_first_deep_stop_state)(r5) -BEGIN_FTR_SECTION_NESTED(71) - /* - * Assume that we are waking up from the state - * same as the Requested Level (RL) in the PSSCR - * which are Bits 60-63 - */ - ld r5,PACA_REQ_PSSCR(r13) - rldicl r5,r5,0,60 -FTR_SECTION_ELSE_NESTED(71) /* * 0-3 bits correspond to Power-Saving Level Status * which indicates the idle state we are waking up from */ mfspr r5, SPRN_PSSCR rldicl r5,r5,4,60 -ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_POWER9_DD1, 71) li r0, 0 /* clear requested_psscr to say we're awake */ std r0, PACA_REQ_PSSCR(r13) cmpd cr4,r5,r4 diff --git a/arch/powerpc/kernel/idle_e500.S b/arch/powerpc/kernel/idle_e500.S index b9b6ef510be1..583e55ac7d26 100644 --- a/arch/powerpc/kernel/idle_e500.S +++ b/arch/powerpc/kernel/idle_e500.S @@ -17,6 +17,7 @@ #include <asm/thread_info.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> +#include <asm/feature-fixups.h> .text diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S index 08faa93755f9..dd7471fe20bd 100644 --- a/arch/powerpc/kernel/idle_power4.S +++ b/arch/powerpc/kernel/idle_power4.S @@ -16,6 +16,7 @@ #include <asm/asm-offsets.h> #include <asm/irqflags.h> #include <asm/hw_irq.h> +#include <asm/feature-fixups.h> #undef DEBUG diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 0682fef1f385..916ddc4aac44 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -145,8 +145,20 @@ notrace unsigned int __check_irq_replay(void) trace_hardirqs_on(); trace_hardirqs_off(); + /* + * We are always hard disabled here, but PACA_IRQ_HARD_DIS may + * not be set, which means interrupts have only just been hard + * disabled as part of the local_irq_restore or interrupt return + * code. In that case, skip the decrementr check becaus it's + * expensive to read the TB. + * + * HARD_DIS then gets cleared here, but it's reconciled later. + * Either local_irq_disable will replay the interrupt and that + * will reconcile state like other hard interrupts. Or interrupt + * retur will replay the interrupt and in that case it sets + * PACA_IRQ_HARD_DIS by hand (see comments in entry_64.S). + */ if (happened & PACA_IRQ_HARD_DIS) { - /* Clear bit 0 which we wouldn't clear otherwise */ local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS; /* @@ -248,24 +260,33 @@ notrace void arch_local_irq_restore(unsigned long mask) * cannot have preempted. */ irq_happened = get_irq_happened(); - if (!irq_happened) + if (!irq_happened) { + /* + * FIXME. Here we'd like to be able to do: + * + * #ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG + * WARN_ON(!(mfmsr() & MSR_EE)); + * #endif + * + * But currently it hits in a few paths, we should fix those and + * enable the warning. + */ return; + } /* * We need to hard disable to get a trusted value from * __check_irq_replay(). We also need to soft-disable * again to avoid warnings in there due to the use of * per-cpu variables. - * - * We know that if the value in irq_happened is exactly 0x01 - * then we are already hard disabled (there are other less - * common cases that we'll ignore for now), so we skip the - * (expensive) mtmsrd. */ - if (unlikely(irq_happened != PACA_IRQ_HARD_DIS)) + if (!(irq_happened & PACA_IRQ_HARD_DIS)) { +#ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG + WARN_ON(!(mfmsr() & MSR_EE)); +#endif __hard_irq_disable(); #ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG - else { + } else { /* * We should already be hard disabled here. We had bugs * where that wasn't the case so let's dbl check it and @@ -274,8 +295,8 @@ notrace void arch_local_irq_restore(unsigned long mask) */ if (WARN_ON(mfmsr() & MSR_EE)) __hard_irq_disable(); - } #endif + } irq_soft_mask_set(IRQS_ALL_DISABLED); trace_hardirqs_off(); diff --git a/arch/powerpc/kernel/kvm_emul.S b/arch/powerpc/kernel/kvm_emul.S index e100ff324a85..c005088f6c9c 100644 --- a/arch/powerpc/kernel/kvm_emul.S +++ b/arch/powerpc/kernel/kvm_emul.S @@ -23,6 +23,7 @@ #include <asm/reg.h> #include <asm/page.h> #include <asm/asm-offsets.h> +#include <asm/asm-compat.h> #define KVM_MAGIC_PAGE (-4096) diff --git a/arch/powerpc/kernel/l2cr_6xx.S b/arch/powerpc/kernel/l2cr_6xx.S index 6408f09dbbd9..6e7dbb7d527c 100644 --- a/arch/powerpc/kernel/l2cr_6xx.S +++ b/arch/powerpc/kernel/l2cr_6xx.S @@ -45,6 +45,7 @@ #include <asm/ppc_asm.h> #include <asm/cache.h> #include <asm/page.h> +#include <asm/feature-fixups.h> /* Usage: diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index 936c7e2d421e..63f5a9311a29 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -17,6 +17,7 @@ #include <linux/irq.h> #include <linux/ftrace.h> +#include <asm/kdump.h> #include <asm/machdep.h> #include <asm/pgalloc.h> #include <asm/prom.h> @@ -188,7 +189,12 @@ void __init reserve_crashkernel(void) (unsigned long)(crashk_res.start >> 20), (unsigned long)(memblock_phys_mem_size() >> 20)); - memblock_reserve(crashk_res.start, crash_size); + if (!memblock_is_region_memory(crashk_res.start, crash_size) || + memblock_reserve(crashk_res.start, crash_size)) { + pr_err("Failed to reserve memory for crashkernel!\n"); + crashk_res.start = crashk_res.end = 0; + return; + } } int overlaps_crashkernel(unsigned long start, unsigned long size) diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c index 0bd23dc789a4..c77e95e9b384 100644 --- a/arch/powerpc/kernel/machine_kexec_file_64.c +++ b/arch/powerpc/kernel/machine_kexec_file_64.c @@ -269,18 +269,14 @@ int setup_new_fdt(const struct kimage *image, void *fdt, ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-start", initrd_load_addr); - if (ret < 0) { - pr_err("Error setting up the new device tree.\n"); - return -EINVAL; - } + if (ret < 0) + goto err; /* initrd-end is the first address after the initrd image. */ ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-end", initrd_load_addr + initrd_len); - if (ret < 0) { - pr_err("Error setting up the new device tree.\n"); - return -EINVAL; - } + if (ret < 0) + goto err; ret = fdt_add_mem_rsv(fdt, initrd_load_addr, initrd_len); if (ret) { @@ -292,10 +288,8 @@ int setup_new_fdt(const struct kimage *image, void *fdt, if (cmdline != NULL) { ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline); - if (ret < 0) { - pr_err("Error setting up the new device tree.\n"); - return -EINVAL; - } + if (ret < 0) + goto err; } else { ret = fdt_delprop(fdt, chosen_node, "bootargs"); if (ret && ret != -FDT_ERR_NOTFOUND) { @@ -311,10 +305,12 @@ int setup_new_fdt(const struct kimage *image, void *fdt, } ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0); - if (ret) { - pr_err("Error setting up the new device tree.\n"); - return -EINVAL; - } + if (ret) + goto err; return 0; + +err: + pr_err("Error setting up the new device tree.\n"); + return -EINVAL; } diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c index 38c5b4764bfe..3497c8329c1d 100644 --- a/arch/powerpc/kernel/mce_power.c +++ b/arch/powerpc/kernel/mce_power.c @@ -62,11 +62,8 @@ static unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr) #ifdef CONFIG_PPC_BOOK3S_64 static void flush_and_reload_slb(void) { - struct slb_shadow *slb; - unsigned long i, n; - /* Invalidate all SLBs */ - asm volatile("slbmte %0,%0; slbia" : : "r" (0)); + slb_flush_all_realmode(); #ifdef CONFIG_KVM_BOOK3S_HANDLER /* @@ -76,22 +73,17 @@ static void flush_and_reload_slb(void) if (get_paca()->kvm_hstate.in_guest) return; #endif - - /* For host kernel, reload the SLBs from shadow SLB buffer. */ - slb = get_slb_shadow(); - if (!slb) + if (early_radix_enabled()) return; - n = min_t(u32, be32_to_cpu(slb->persistent), SLB_MIN_SIZE); - - /* Load up the SLB entries from shadow SLB */ - for (i = 0; i < n; i++) { - unsigned long rb = be64_to_cpu(slb->save_area[i].esid); - unsigned long rs = be64_to_cpu(slb->save_area[i].vsid); + /* + * This probably shouldn't happen, but it may be possible it's + * called in early boot before SLB shadows are allocated. + */ + if (!get_slb_shadow()) + return; - rb = (rb & ~0xFFFul) | i; - asm volatile("slbmte %0,%1" : : "r" (rs), "r" (rb)); - } + slb_restore_bolted_realmode(); } #endif @@ -257,12 +249,12 @@ static const struct mce_derror_table mce_p7_derror_table[] = { { 0x00000400, true, MCE_ERROR_TYPE_TLB, MCE_TLB_ERROR_MULTIHIT, MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, +{ 0x00000080, true, + MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT, /* Before PARITY */ + MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, { 0x00000100, true, MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY, MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, -{ 0x00000080, true, - MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT, - MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, { 0x00000040, true, MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_INDETERMINATE, /* BOTH */ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, @@ -290,12 +282,12 @@ static const struct mce_derror_table mce_p8_derror_table[] = { { 0x00000200, true, MCE_ERROR_TYPE_ERAT, MCE_ERAT_ERROR_MULTIHIT, /* SECONDARY ERAT */ MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, +{ 0x00000080, true, + MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT, /* Before PARITY */ + MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, { 0x00000100, true, MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY, MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, -{ 0x00000080, true, - MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT, - MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, { 0, false, 0, 0, 0, 0 } }; static const struct mce_derror_table mce_p9_derror_table[] = { @@ -320,12 +312,12 @@ static const struct mce_derror_table mce_p9_derror_table[] = { { 0x00000200, false, MCE_ERROR_TYPE_USER, MCE_USER_ERROR_TLBIE, MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, +{ 0x00000080, true, + MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT, /* Before PARITY */ + MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, { 0x00000100, true, MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_PARITY, MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, -{ 0x00000080, true, - MCE_ERROR_TYPE_SLB, MCE_SLB_ERROR_MULTIHIT, - MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, { 0x00000040, true, MCE_ERROR_TYPE_RA, MCE_RA_ERROR_LOAD, MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, }, diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 3f7a9a2d2435..695b24a2d954 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -34,6 +34,7 @@ #include <asm/bug.h> #include <asm/ptrace.h> #include <asm/export.h> +#include <asm/feature-fixups.h> .text diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index fa267e94090a..262ba9481781 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -28,6 +28,7 @@ #include <asm/ptrace.h> #include <asm/mmu.h> #include <asm/export.h> +#include <asm/feature-fixups.h> .text diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c index 1b3c6835e730..77371c9ef3d8 100644 --- a/arch/powerpc/kernel/module.c +++ b/arch/powerpc/kernel/module.c @@ -72,13 +72,15 @@ int module_finalize(const Elf_Ehdr *hdr, do_feature_fixups(powerpc_firmware_features, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); +#endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_BARRIER_NOSPEC sect = find_section(hdr, sechdrs, "__spec_barrier_fixup"); if (sect != NULL) do_barrier_nospec_fixups_range(barrier_nospec_enabled, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); -#endif +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ sect = find_section(hdr, sechdrs, "__lwsync_fixup"); if (sect != NULL) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 471aac313b89..88e4f69a09e5 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -368,9 +368,6 @@ static int pci_read_irq_line(struct pci_dev *pci_dev) pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev)); -#ifdef DEBUG - memset(&oirq, 0xff, sizeof(oirq)); -#endif /* Try to get a mapping from the device-tree */ virq = of_irq_parse_and_map_pci(pci_dev, 0, 0); if (virq <= 0) { diff --git a/arch/powerpc/kernel/ppc_save_regs.S b/arch/powerpc/kernel/ppc_save_regs.S index 8afbe213d729..6d1b42ee797c 100644 --- a/arch/powerpc/kernel/ppc_save_regs.S +++ b/arch/powerpc/kernel/ppc_save_regs.S @@ -12,6 +12,7 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/ptrace.h> +#include <asm/asm-compat.h> /* * Grab the register values as they are now. diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 9ef4aea9fffe..913c5725cdb2 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -583,6 +583,7 @@ static void save_all(struct task_struct *tsk) __giveup_spe(tsk); msr_check_and_clear(msr_all_available); + thread_pkey_regs_save(&tsk->thread); } void flush_all_to_thread(struct task_struct *tsk) @@ -716,6 +717,13 @@ void switch_booke_debug_regs(struct debug_reg *new_debug) EXPORT_SYMBOL_GPL(switch_booke_debug_regs); #else /* !CONFIG_PPC_ADV_DEBUG_REGS */ #ifndef CONFIG_HAVE_HW_BREAKPOINT +static void set_breakpoint(struct arch_hw_breakpoint *brk) +{ + preempt_disable(); + __set_breakpoint(brk); + preempt_enable(); +} + static void set_debug_reg_defaults(struct thread_struct *thread) { thread->hw_brk.address = 0; @@ -828,13 +836,6 @@ void __set_breakpoint(struct arch_hw_breakpoint *brk) WARN_ON_ONCE(1); } -void set_breakpoint(struct arch_hw_breakpoint *brk) -{ - preempt_disable(); - __set_breakpoint(brk); - preempt_enable(); -} - /* Check if we have DAWR or DABR hardware */ bool ppc_breakpoint_available(void) { @@ -866,8 +867,7 @@ static inline bool tm_enabled(struct task_struct *tsk) return tsk && tsk->thread.regs && (tsk->thread.regs->msr & MSR_TM); } -static void tm_reclaim_thread(struct thread_struct *thr, - struct thread_info *ti, uint8_t cause) +static void tm_reclaim_thread(struct thread_struct *thr, uint8_t cause) { /* * Use the current MSR TM suspended bit to track if we have @@ -914,7 +914,7 @@ static void tm_reclaim_thread(struct thread_struct *thr, void tm_reclaim_current(uint8_t cause) { tm_enable(); - tm_reclaim_thread(¤t->thread, current_thread_info(), cause); + tm_reclaim_thread(¤t->thread, cause); } static inline void tm_reclaim_task(struct task_struct *tsk) @@ -945,7 +945,7 @@ static inline void tm_reclaim_task(struct task_struct *tsk) thr->regs->ccr, thr->regs->msr, thr->regs->trap); - tm_reclaim_thread(thr, task_thread_info(tsk), TM_CAUSE_RESCHED); + tm_reclaim_thread(thr, TM_CAUSE_RESCHED); TM_DEBUG("--- tm_reclaim on pid %d complete\n", tsk->pid); @@ -1250,17 +1250,9 @@ struct task_struct *__switch_to(struct task_struct *prev, * mappings. If the new process has the foreign real address * mappings, we must issue a cp_abort to clear any state and * prevent snooping, corruption or a covert channel. - * - * DD1 allows paste into normal system memory so we do an - * unpaired copy, rather than cp_abort, to clear the buffer, - * since cp_abort is quite expensive. */ - if (current_thread_info()->task->thread.used_vas) { + if (current_thread_info()->task->thread.used_vas) asm volatile(PPC_CP_ABORT); - } else if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - asm volatile(PPC_COPY(%0, %1) - : : "r"(dummy_copy_buffer), "r"(0)); - } } #endif /* CONFIG_PPC_BOOK3S_64 */ @@ -1307,6 +1299,38 @@ static void show_instructions(struct pt_regs *regs) pr_cont("\n"); } +void show_user_instructions(struct pt_regs *regs) +{ + unsigned long pc; + int i; + + pc = regs->nip - (instructions_to_print * 3 / 4 * sizeof(int)); + + pr_info("%s[%d]: code: ", current->comm, current->pid); + + for (i = 0; i < instructions_to_print; i++) { + int instr; + + if (!(i % 8) && (i > 0)) { + pr_cont("\n"); + pr_info("%s[%d]: code: ", current->comm, current->pid); + } + + if (probe_kernel_address((unsigned int __user *)pc, instr)) { + pr_cont("XXXXXXXX "); + } else { + if (regs->nip == pc) + pr_cont("<%08x> ", instr); + else + pr_cont("%08x ", instr); + } + + pc += sizeof(int); + } + + pr_cont("\n"); +} + struct regbit { unsigned long bit; const char *name; diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 05e7fb47a7a4..c4d7078e5295 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -23,7 +23,6 @@ #include <linux/spinlock.h> #include <linux/types.h> #include <linux/pci.h> -#include <linux/stringify.h> #include <linux/delay.h> #include <linux/initrd.h> #include <linux/bitops.h> @@ -440,6 +439,29 @@ static int __init early_init_dt_scan_chosen_ppc(unsigned long node, return 1; } +/* + * Compare the range against max mem limit and update + * size if it cross the limit. + */ + +#ifdef CONFIG_SPARSEMEM +static bool validate_mem_limit(u64 base, u64 *size) +{ + u64 max_mem = 1UL << (MAX_PHYSMEM_BITS); + + if (base >= max_mem) + return false; + if ((base + *size) > max_mem) + *size = max_mem - base; + return true; +} +#else +static bool validate_mem_limit(u64 base, u64 *size) +{ + return true; +} +#endif + #ifdef CONFIG_PPC_PSERIES /* * Interpret the ibm dynamic reconfiguration memory LMBs. @@ -494,7 +516,8 @@ static void __init early_init_drmem_lmb(struct drmem_lmb *lmb, } DBG("Adding: %llx -> %llx\n", base, size); - memblock_add(base, size); + if (validate_mem_limit(base, &size)) + memblock_add(base, size); } while (--rngs); } #endif /* CONFIG_PPC_PSERIES */ @@ -548,8 +571,10 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size) } /* Add the chunk to the MEMBLOCK list */ - if (add_mem_to_memblock) - memblock_add(base, size); + if (add_mem_to_memblock) { + if (validate_mem_limit(base, &size)) + memblock_add(base, size); + } } static void __init early_reserve_mem_dt(void) diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 5425dd3d6a9f..9b38a2e5dd35 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -27,7 +27,6 @@ #include <linux/types.h> #include <linux/pci.h> #include <linux/proc_fs.h> -#include <linux/stringify.h> #include <linux/delay.h> #include <linux/initrd.h> #include <linux/bitops.h> @@ -629,7 +628,7 @@ static void __init early_cmdline_parse(void) const char *opt; char *p; - int l = 0; + int l __maybe_unused = 0; prom_cmd_line[0] = 0; p = prom_cmd_line; @@ -1422,7 +1421,10 @@ static void __init reserve_mem(u64 base, u64 size) static void __init prom_init_mem(void) { phandle node; - char *path, type[64]; +#ifdef DEBUG_PROM + char *path; +#endif + char type[64]; unsigned int plen; cell_t *p, *endp; __be32 val; @@ -1443,7 +1445,9 @@ static void __init prom_init_mem(void) prom_debug("root_size_cells: %x\n", rsc); prom_debug("scanning memory:\n"); +#ifdef DEBUG_PROM path = prom_scratch; +#endif for (node = 0; prom_next_node(&node); ) { type[0] = 0; @@ -2102,8 +2106,6 @@ static void __init prom_init_stdout(void) stdout_node = call_prom("instance-to-package", 1, 1, prom.stdout); if (stdout_node != PROM_ERROR) { val = cpu_to_be32(stdout_node); - prom_setprop(prom.chosen, "/chosen", "linux,stdout-package", - &val, sizeof(val)); /* If it's a display, note it */ memset(type, 0, sizeof(type)); diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index a8b277362931..f6f469fc4073 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -8,6 +8,8 @@ #include <linux/device.h> #include <linux/seq_buf.h> +#include <asm/asm-prototypes.h> +#include <asm/code-patching.h> #include <asm/debugfs.h> #include <asm/security_features.h> #include <asm/setup.h> @@ -15,7 +17,15 @@ unsigned long powerpc_security_features __read_mostly = SEC_FTR_DEFAULT; +enum count_cache_flush_type { + COUNT_CACHE_FLUSH_NONE = 0x1, + COUNT_CACHE_FLUSH_SW = 0x2, + COUNT_CACHE_FLUSH_HW = 0x4, +}; +static enum count_cache_flush_type count_cache_flush_type; + bool barrier_nospec_enabled; +static bool no_nospec; static void enable_barrier_nospec(bool enable) { @@ -42,8 +52,17 @@ void setup_barrier_nospec(void) enable = security_ftr_enabled(SEC_FTR_FAVOUR_SECURITY) && security_ftr_enabled(SEC_FTR_BNDS_CHK_SPEC_BAR); - enable_barrier_nospec(enable); + if (!no_nospec) + enable_barrier_nospec(enable); +} + +static int __init handle_nospectre_v1(char *p) +{ + no_nospec = true; + + return 0; } +early_param("nospectre_v1", handle_nospectre_v1); #ifdef CONFIG_DEBUG_FS static int barrier_nospec_set(void *data, u64 val) @@ -82,6 +101,7 @@ static __init int barrier_nospec_debugfs_init(void) device_initcall(barrier_nospec_debugfs_init); #endif /* CONFIG_DEBUG_FS */ +#ifdef CONFIG_PPC_BOOK3S_64 ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, char *buf) { bool thread_priv; @@ -114,51 +134,72 @@ ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, cha return sprintf(buf, "Vulnerable\n"); } +#endif ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr, char *buf) { - if (!security_ftr_enabled(SEC_FTR_BNDS_CHK_SPEC_BAR)) - return sprintf(buf, "Not affected\n"); + struct seq_buf s; - if (barrier_nospec_enabled) - return sprintf(buf, "Mitigation: __user pointer sanitization\n"); + seq_buf_init(&s, buf, PAGE_SIZE - 1); - return sprintf(buf, "Vulnerable\n"); + if (security_ftr_enabled(SEC_FTR_BNDS_CHK_SPEC_BAR)) { + if (barrier_nospec_enabled) + seq_buf_printf(&s, "Mitigation: __user pointer sanitization"); + else + seq_buf_printf(&s, "Vulnerable"); + + if (security_ftr_enabled(SEC_FTR_SPEC_BAR_ORI31)) + seq_buf_printf(&s, ", ori31 speculation barrier enabled"); + + seq_buf_printf(&s, "\n"); + } else + seq_buf_printf(&s, "Not affected\n"); + + return s.len; } ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, char *buf) { - bool bcs, ccd, ori; struct seq_buf s; + bool bcs, ccd; seq_buf_init(&s, buf, PAGE_SIZE - 1); bcs = security_ftr_enabled(SEC_FTR_BCCTRL_SERIALISED); ccd = security_ftr_enabled(SEC_FTR_COUNT_CACHE_DISABLED); - ori = security_ftr_enabled(SEC_FTR_SPEC_BAR_ORI31); - if (bcs || ccd) { + if (bcs || ccd || count_cache_flush_type != COUNT_CACHE_FLUSH_NONE) { + bool comma = false; seq_buf_printf(&s, "Mitigation: "); - if (bcs) + if (bcs) { seq_buf_printf(&s, "Indirect branch serialisation (kernel only)"); + comma = true; + } + + if (ccd) { + if (comma) + seq_buf_printf(&s, ", "); + seq_buf_printf(&s, "Indirect branch cache disabled"); + comma = true; + } - if (bcs && ccd) + if (comma) seq_buf_printf(&s, ", "); - if (ccd) - seq_buf_printf(&s, "Indirect branch cache disabled"); + seq_buf_printf(&s, "Software count cache flush"); + + if (count_cache_flush_type == COUNT_CACHE_FLUSH_HW) + seq_buf_printf(&s, "(hardware accelerated)"); } else seq_buf_printf(&s, "Vulnerable"); - if (ori) - seq_buf_printf(&s, ", ori31 speculation barrier enabled"); - seq_buf_printf(&s, "\n"); return s.len; } +#ifdef CONFIG_PPC_BOOK3S_64 /* * Store-forwarding barrier support. */ @@ -306,3 +347,71 @@ static __init int stf_barrier_debugfs_init(void) } device_initcall(stf_barrier_debugfs_init); #endif /* CONFIG_DEBUG_FS */ + +static void toggle_count_cache_flush(bool enable) +{ + if (!enable || !security_ftr_enabled(SEC_FTR_FLUSH_COUNT_CACHE)) { + patch_instruction_site(&patch__call_flush_count_cache, PPC_INST_NOP); + count_cache_flush_type = COUNT_CACHE_FLUSH_NONE; + pr_info("count-cache-flush: software flush disabled.\n"); + return; + } + + patch_branch_site(&patch__call_flush_count_cache, + (u64)&flush_count_cache, BRANCH_SET_LINK); + + if (!security_ftr_enabled(SEC_FTR_BCCTR_FLUSH_ASSIST)) { + count_cache_flush_type = COUNT_CACHE_FLUSH_SW; + pr_info("count-cache-flush: full software flush sequence enabled.\n"); + return; + } + + patch_instruction_site(&patch__flush_count_cache_return, PPC_INST_BLR); + count_cache_flush_type = COUNT_CACHE_FLUSH_HW; + pr_info("count-cache-flush: hardware assisted flush sequence enabled\n"); +} + +void setup_count_cache_flush(void) +{ + toggle_count_cache_flush(true); +} + +#ifdef CONFIG_DEBUG_FS +static int count_cache_flush_set(void *data, u64 val) +{ + bool enable; + + if (val == 1) + enable = true; + else if (val == 0) + enable = false; + else + return -EINVAL; + + toggle_count_cache_flush(enable); + + return 0; +} + +static int count_cache_flush_get(void *data, u64 *val) +{ + if (count_cache_flush_type == COUNT_CACHE_FLUSH_NONE) + *val = 0; + else + *val = 1; + + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(fops_count_cache_flush, count_cache_flush_get, + count_cache_flush_set, "%llu\n"); + +static __init int count_cache_flush_debugfs_init(void) +{ + debugfs_create_file("count_cache_flush", 0600, powerpc_debugfs_root, + NULL, &fops_count_cache_flush); + return 0; +} +device_initcall(count_cache_flush_debugfs_init); +#endif /* CONFIG_DEBUG_FS */ +#endif /* CONFIG_PPC_BOOK3S_64 */ diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 40b44bb53a4e..93fa0c99681e 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -972,6 +972,8 @@ void __init setup_arch(char **cmdline_p) if (ppc_md.setup_arch) ppc_md.setup_arch(); + setup_barrier_nospec(); + paging_init(); /* Initialize the MMU context management stuff. */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 74457485574b..8c507be12c3c 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -40,6 +40,10 @@ #include <asm/code-patching.h> #include <asm/cpu_has_feature.h> #include <asm/asm-prototypes.h> +#include <asm/kdump.h> +#include <asm/feature-fixups.h> + +#include "setup.h" #define DBG(fmt...) @@ -95,11 +99,10 @@ notrace unsigned long __init early_init(unsigned long dt_ptr) * We do the initial parsing of the flat device-tree and prepares * for the MMU to be fully initialized. */ -extern unsigned int memset_nocache_branch; /* Insn to be replaced by NOP */ - notrace void __init machine_init(u64 dt_ptr) { - unsigned int *addr = &memset_nocache_branch; + unsigned int *addr = (unsigned int *)((unsigned long)&patch__memset_nocache + + patch__memset_nocache); unsigned long insn; /* Configure static keys first, now that we're relocated. */ @@ -108,7 +111,7 @@ notrace void __init machine_init(u64 dt_ptr) /* Enable early debugging if any specified (see udbg.h) */ udbg_early_init(); - patch_instruction((unsigned int *)&memcpy, PPC_INST_NOP); + patch_instruction_site(&patch__memcpy_nocache, PPC_INST_NOP); insn = create_cond_branch(addr, branch_target(addr), 0x820000); patch_instruction(addr, insn); /* replace b by bne cr0 */ diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 225bc5f91049..6a501b25dd85 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -68,6 +68,7 @@ #include <asm/opal.h> #include <asm/cputhreads.h> #include <asm/hw_irq.h> +#include <asm/feature-fixups.h> #include "setup.h" diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 4794d6b4f4d2..b19d832ef386 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -423,7 +423,8 @@ int smp_handle_nmi_ipi(struct pt_regs *regs) fn(regs); nmi_ipi_lock(); - nmi_ipi_busy_count--; + if (nmi_ipi_busy_count > 1) /* Can race with caller time-out */ + nmi_ipi_busy_count--; out: nmi_ipi_unlock_end(&flags); @@ -448,29 +449,11 @@ static void do_smp_send_nmi_ipi(int cpu, bool safe) } } -void smp_flush_nmi_ipi(u64 delay_us) -{ - unsigned long flags; - - nmi_ipi_lock_start(&flags); - while (nmi_ipi_busy_count) { - nmi_ipi_unlock_end(&flags); - udelay(1); - if (delay_us) { - delay_us--; - if (!delay_us) - return; - } - nmi_ipi_lock_start(&flags); - } - nmi_ipi_unlock_end(&flags); -} - /* * - cpu is the target CPU (must not be this CPU), or NMI_IPI_ALL_OTHERS. * - fn is the target callback function. * - delay_us > 0 is the delay before giving up waiting for targets to - * enter the handler, == 0 specifies indefinite delay. + * complete executing the handler, == 0 specifies indefinite delay. */ int __smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us, bool safe) { @@ -507,8 +490,23 @@ int __smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us, bool do_smp_send_nmi_ipi(cpu, safe); + nmi_ipi_lock(); + /* nmi_ipi_busy_count is held here, so unlock/lock is okay */ while (!cpumask_empty(&nmi_ipi_pending_mask)) { + nmi_ipi_unlock(); udelay(1); + nmi_ipi_lock(); + if (delay_us) { + delay_us--; + if (!delay_us) + break; + } + } + + while (nmi_ipi_busy_count > 1) { + nmi_ipi_unlock(); + udelay(1); + nmi_ipi_lock(); if (delay_us) { delay_us--; if (!delay_us) @@ -516,12 +514,17 @@ int __smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us, bool } } - nmi_ipi_lock(); if (!cpumask_empty(&nmi_ipi_pending_mask)) { - /* Could not gather all CPUs */ + /* Timeout waiting for CPUs to call smp_handle_nmi_ipi */ ret = 0; cpumask_clear(&nmi_ipi_pending_mask); } + if (nmi_ipi_busy_count > 1) { + /* Timeout waiting for CPUs to execute fn */ + ret = 0; + nmi_ipi_busy_count = 1; + } + nmi_ipi_busy_count--; nmi_ipi_unlock_end(&flags); @@ -597,7 +600,8 @@ static void nmi_stop_this_cpu(struct pt_regs *regs) * IRQs are already hard disabled by the smp_handle_nmi_ipi. */ nmi_ipi_lock(); - nmi_ipi_busy_count--; + if (nmi_ipi_busy_count > 1) + nmi_ipi_busy_count--; nmi_ipi_unlock(); spin_begin(); diff --git a/arch/powerpc/kernel/swsusp_32.S b/arch/powerpc/kernel/swsusp_32.S index 34b73a262709..7a919e9a3400 100644 --- a/arch/powerpc/kernel/swsusp_32.S +++ b/arch/powerpc/kernel/swsusp_32.S @@ -7,6 +7,7 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/mmu.h> +#include <asm/feature-fixups.h> /* * Structure for storing CPU registers on the save area. diff --git a/arch/powerpc/kernel/swsusp_asm64.S b/arch/powerpc/kernel/swsusp_asm64.S index 82d8aae81c6a..f83bf6f72cb0 100644 --- a/arch/powerpc/kernel/swsusp_asm64.S +++ b/arch/powerpc/kernel/swsusp_asm64.S @@ -13,6 +13,7 @@ #include <asm/thread_info.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> +#include <asm/feature-fixups.h> /* * Structure for storing CPU registers on the save area. diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index ff12f47a96b6..6bffbc5affe7 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -13,6 +13,7 @@ #include <asm/reg.h> #include <asm/bug.h> #include <asm/export.h> +#include <asm/feature-fixups.h> #ifdef CONFIG_VSX /* See fpu.S, this is borrowed from there */ @@ -312,8 +313,8 @@ _GLOBAL(tm_reclaim) blr - /* void __tm_recheckpoint(struct thread_struct *thread, - * unsigned long orig_msr) + /* + * void __tm_recheckpoint(struct thread_struct *thread) * - Restore the checkpointed register state saved by tm_reclaim * when we switch_to a process. * diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 0e17dcb48720..070e96f1773a 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -70,6 +70,7 @@ #include <asm/hmi.h> #include <sysdev/fsl_pci.h> #include <asm/kprobes.h> +#include <asm/stacktrace.h> #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE) int (*__debugger)(struct pt_regs *regs) __read_mostly; @@ -96,6 +97,19 @@ EXPORT_SYMBOL(__debugger_fault_handler); #define TM_DEBUG(x...) do { } while(0) #endif +static const char *signame(int signr) +{ + switch (signr) { + case SIGBUS: return "bus error"; + case SIGFPE: return "floating point exception"; + case SIGILL: return "illegal instruction"; + case SIGSEGV: return "segfault"; + case SIGTRAP: return "unhandled trap"; + } + + return "unknown signal"; +} + /* * Trap & Exception support */ @@ -301,26 +315,44 @@ void user_single_step_siginfo(struct task_struct *tsk, info->si_addr = (void __user *)regs->nip; } +static bool show_unhandled_signals_ratelimited(void) +{ + static DEFINE_RATELIMIT_STATE(rs, DEFAULT_RATELIMIT_INTERVAL, + DEFAULT_RATELIMIT_BURST); + return show_unhandled_signals && __ratelimit(&rs); +} + +static void show_signal_msg(int signr, struct pt_regs *regs, int code, + unsigned long addr) +{ + if (!show_unhandled_signals_ratelimited()) + return; + + if (!unhandled_signal(current, signr)) + return; + + pr_info("%s[%d]: %s (%d) at %lx nip %lx lr %lx code %x", + current->comm, current->pid, signame(signr), signr, + addr, regs->nip, regs->link, code); + + print_vma_addr(KERN_CONT " in ", regs->nip); + + pr_cont("\n"); + + show_user_instructions(regs); +} void _exception_pkey(int signr, struct pt_regs *regs, int code, - unsigned long addr, int key) + unsigned long addr, int key) { siginfo_t info; - const char fmt32[] = KERN_INFO "%s[%d]: unhandled signal %d " \ - "at %08lx nip %08lx lr %08lx code %x\n"; - const char fmt64[] = KERN_INFO "%s[%d]: unhandled signal %d " \ - "at %016lx nip %016lx lr %016lx code %x\n"; if (!user_mode(regs)) { die("Exception in kernel mode", regs, signr); return; } - if (show_unhandled_signals && unhandled_signal(current, signr)) { - printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32, - current->comm, current->pid, signr, - addr, regs->nip, regs->link, code); - } + show_signal_msg(signr, regs, code, addr); if (arch_irqs_disabled() && !arch_irq_disabled_regs(regs)) local_irq_enable(); diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index d2205b97628c..65b3bdb99f0b 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -22,7 +22,6 @@ #include <linux/security.h> #include <linux/memblock.h> -#include <asm/cpu_has_feature.h> #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/mmu.h> diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S index f314fd475491..21165da0052d 100644 --- a/arch/powerpc/kernel/vector.S +++ b/arch/powerpc/kernel/vector.S @@ -8,6 +8,7 @@ #include <asm/page.h> #include <asm/ptrace.h> #include <asm/export.h> +#include <asm/asm-compat.h> /* * Load state from memory into VMX registers including VSCR. diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 5baac79df97e..07ae018e550e 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -153,14 +153,16 @@ SECTIONS *(__rfi_flush_fixup) __stop___rfi_flush_fixup = .; } +#endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_BARRIER_NOSPEC . = ALIGN(8); __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) { __start___barrier_nospec_fixup = .; *(__barrier_nospec_fixup) __stop___barrier_nospec_fixup = .; } -#endif +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ EXCEPTION_TABLE(0) diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c index 1d82274f7e9f..3c6ab22a0c4e 100644 --- a/arch/powerpc/kernel/watchdog.c +++ b/arch/powerpc/kernel/watchdog.c @@ -174,7 +174,6 @@ static void watchdog_smp_panic(int cpu, u64 tb) continue; smp_send_nmi_ipi(c, wd_lockup_ipi, 1000000); } - smp_flush_nmi_ipi(1000000); } /* Take the stuck CPUs out of the watch group */ diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index edaf4720d156..87348e498c89 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -28,7 +28,6 @@ #include <asm/reg.h> #include <asm/cputable.h> #include <asm/cacheflush.h> -#include <asm/tlbflush.h> #include <linux/uaccess.h> #include <asm/io.h> #include <asm/kvm_ppc.h> diff --git a/arch/powerpc/kvm/book3s_32_mmu.c b/arch/powerpc/kvm/book3s_32_mmu.c index 45c8ea4a0487..612169988a3d 100644 --- a/arch/powerpc/kvm/book3s_32_mmu.c +++ b/arch/powerpc/kvm/book3s_32_mmu.c @@ -23,7 +23,6 @@ #include <linux/kvm_host.h> #include <linux/highmem.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> diff --git a/arch/powerpc/kvm/book3s_64_mmu.c b/arch/powerpc/kvm/book3s_64_mmu.c index cf9d686e8162..c92dd25bed23 100644 --- a/arch/powerpc/kvm/book3s_64_mmu.c +++ b/arch/powerpc/kvm/book3s_64_mmu.c @@ -23,7 +23,6 @@ #include <linux/kvm_host.h> #include <linux/highmem.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> #include <asm/book3s/64/mmu-hash.h> diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 7f3a8cf5d66f..3c0e8fb2b773 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -29,7 +29,6 @@ #include <linux/file.h> #include <linux/debugfs.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> #include <asm/book3s/64/mmu-hash.h> diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c index 176f911ee983..0af1c0aea1fe 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_radix.c +++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c @@ -66,10 +66,7 @@ int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, bits = root & RPDS_MASK; root = root & RPDB_MASK; - /* P9 DD1 interprets RTS (radix tree size) differently */ offset = rts + 31; - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - offset -= 3; /* current implementations only support 52-bit space */ if (offset != 52) @@ -160,17 +157,7 @@ static unsigned long kvmppc_radix_update_pte(struct kvm *kvm, pte_t *ptep, unsigned long clr, unsigned long set, unsigned long addr, unsigned int shift) { - unsigned long old = 0; - - if (!(clr & _PAGE_PRESENT) && cpu_has_feature(CPU_FTR_POWER9_DD1) && - pte_present(*ptep)) { - /* have to invalidate it first */ - old = __radix_pte_update(ptep, _PAGE_PRESENT, 0); - kvmppc_radix_tlbie_page(kvm, addr, shift); - set |= _PAGE_PRESENT; - old &= _PAGE_PRESENT; - } - return __radix_pte_update(ptep, clr, set) | old; + return __radix_pte_update(ptep, clr, set); } void kvmppc_radix_set_pte_at(struct kvm *kvm, unsigned long addr, diff --git a/arch/powerpc/kvm/book3s_64_slb.S b/arch/powerpc/kvm/book3s_64_slb.S index 688722acd692..066c665dc86f 100644 --- a/arch/powerpc/kvm/book3s_64_slb.S +++ b/arch/powerpc/kvm/book3s_64_slb.S @@ -17,6 +17,9 @@ * Authors: Alexander Graf <agraf@suse.de> */ +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> + #define SHADOW_SLB_ENTRY_LEN 0x10 #define OFFSET_ESID(x) (SHADOW_SLB_ENTRY_LEN * x) #define OFFSET_VSID(x) ((SHADOW_SLB_ENTRY_LEN * x) + 8) diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c index 8c456fa691a5..e8afdd4f4814 100644 --- a/arch/powerpc/kvm/book3s_64_vio.c +++ b/arch/powerpc/kvm/book3s_64_vio.c @@ -31,7 +31,6 @@ #include <linux/iommu.h> #include <linux/file.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> #include <asm/book3s/64/mmu-hash.h> @@ -378,19 +377,19 @@ static long kvmppc_tce_iommu_mapped_dec(struct kvm *kvm, { struct mm_iommu_table_group_mem_t *mem = NULL; const unsigned long pgsize = 1ULL << tbl->it_page_shift; - unsigned long *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); + __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); if (!pua) /* it_userspace allocation might be delayed */ return H_TOO_HARD; - mem = mm_iommu_lookup(kvm->mm, *pua, pgsize); + mem = mm_iommu_lookup(kvm->mm, be64_to_cpu(*pua), pgsize); if (!mem) return H_TOO_HARD; mm_iommu_mapped_dec(mem); - *pua = 0; + *pua = cpu_to_be64(0); return H_SUCCESS; } @@ -437,7 +436,8 @@ long kvmppc_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl, enum dma_data_direction dir) { long ret; - unsigned long hpa, *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); + unsigned long hpa; + __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); struct mm_iommu_table_group_mem_t *mem; if (!pua) @@ -464,7 +464,7 @@ long kvmppc_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl, if (dir != DMA_NONE) kvmppc_tce_iommu_mapped_dec(kvm, tbl, entry); - *pua = ua; + *pua = cpu_to_be64(ua); return 0; } diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c index 5b298f5a1a14..506a4d400458 100644 --- a/arch/powerpc/kvm/book3s_64_vio_hv.c +++ b/arch/powerpc/kvm/book3s_64_vio_hv.c @@ -26,8 +26,8 @@ #include <linux/slab.h> #include <linux/hugetlb.h> #include <linux/list.h> +#include <linux/stringify.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> #include <asm/book3s/64/mmu-hash.h> @@ -200,23 +200,19 @@ static long kvmppc_rm_tce_iommu_mapped_dec(struct kvm *kvm, { struct mm_iommu_table_group_mem_t *mem = NULL; const unsigned long pgsize = 1ULL << tbl->it_page_shift; - unsigned long *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); + __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY_RM(tbl, entry); if (!pua) /* it_userspace allocation might be delayed */ return H_TOO_HARD; - pua = (void *) vmalloc_to_phys(pua); - if (WARN_ON_ONCE_RM(!pua)) - return H_HARDWARE; - - mem = mm_iommu_lookup_rm(kvm->mm, *pua, pgsize); + mem = mm_iommu_lookup_rm(kvm->mm, be64_to_cpu(*pua), pgsize); if (!mem) return H_TOO_HARD; mm_iommu_mapped_dec(mem); - *pua = 0; + *pua = cpu_to_be64(0); return H_SUCCESS; } @@ -268,7 +264,7 @@ static long kvmppc_rm_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl, { long ret; unsigned long hpa = 0; - unsigned long *pua = IOMMU_TABLE_USERSPACE_ENTRY(tbl, entry); + __be64 *pua = IOMMU_TABLE_USERSPACE_ENTRY_RM(tbl, entry); struct mm_iommu_table_group_mem_t *mem; if (!pua) @@ -283,10 +279,6 @@ static long kvmppc_rm_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl, &hpa))) return H_HARDWARE; - pua = (void *) vmalloc_to_phys(pua); - if (WARN_ON_ONCE_RM(!pua)) - return H_HARDWARE; - if (WARN_ON_ONCE_RM(mm_iommu_mapped_inc(mem))) return H_CLOSED; @@ -303,7 +295,7 @@ static long kvmppc_rm_tce_iommu_do_map(struct kvm *kvm, struct iommu_table *tbl, if (dir != DMA_NONE) kvmppc_rm_tce_iommu_mapped_dec(kvm, tbl, entry); - *pua = ua; + *pua = cpu_to_be64(ua); return 0; } diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index ee4a8854985e..96f1cc6c97b7 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -53,7 +53,6 @@ #include <asm/disassemble.h> #include <asm/cputable.h> #include <asm/cacheflush.h> -#include <asm/tlbflush.h> #include <linux/uaccess.h> #include <asm/io.h> #include <asm/kvm_ppc.h> @@ -1693,14 +1692,6 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, r = set_vpa(vcpu, &vcpu->arch.dtl, addr, len); break; case KVM_REG_PPC_TB_OFFSET: - /* - * POWER9 DD1 has an erratum where writing TBU40 causes - * the timebase to lose ticks. So we don't let the - * timebase offset be changed on P9 DD1. (It is - * initialized to zero.) - */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - break; /* round up to multiple of 2^24 */ vcpu->arch.vcore->tb_offset = ALIGN(set_reg_val(id, *val), 1UL << 24); @@ -2026,8 +2017,6 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm, /* * Set the default HFSCR for the guest from the host value. * This value is only used on POWER9. - * On POWER9 DD1, TM doesn't work, so we make sure to - * prevent the guest from using it. * On POWER9, we want to virtualize the doorbell facility, so we * turn off the HFSCR bit, which causes those instructions to trap. */ diff --git a/arch/powerpc/kvm/book3s_hv_interrupts.S b/arch/powerpc/kvm/book3s_hv_interrupts.S index 82f2ff9410b6..666b91c79eb4 100644 --- a/arch/powerpc/kvm/book3s_hv_interrupts.S +++ b/arch/powerpc/kvm/book3s_hv_interrupts.S @@ -27,6 +27,8 @@ #include <asm/asm-offsets.h> #include <asm/exception-64s.h> #include <asm/ppc-opcode.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> /***************************************************************************** * * diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index 1f22d9e977d4..a67cf1cdeda4 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -14,7 +14,6 @@ #include <linux/module.h> #include <linux/log2.h> -#include <asm/tlbflush.h> #include <asm/trace.h> #include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 153988d878e8..1d14046124a0 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -32,6 +32,8 @@ #include <asm/opal.h> #include <asm/xive-regs.h> #include <asm/thread_info.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> /* Sign-extend HDEC if not on POWER9 */ #define EXTEND_HDEC(reg) \ @@ -917,9 +919,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_DAWR) mtspr SPRN_PID, r7 mtspr SPRN_WORT, r8 BEGIN_FTR_SECTION - PPC_INVALIDATE_ERAT -END_FTR_SECTION_IFSET(CPU_FTR_POWER9_DD1) -BEGIN_FTR_SECTION /* POWER8-only registers */ ld r5, VCPU_TCSCR(r4) ld r6, VCPU_ACOP(r4) @@ -1912,7 +1911,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300) ld r5, VCPU_KVM(r9) lbz r0, KVM_RADIX(r5) cmpwi cr2, r0, 0 - beq cr2, 4f + beq cr2, 2f /* * Radix: do eieio; tlbsync; ptesync sequence in case we @@ -1952,11 +1951,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300) bdnz 1b ptesync -2: /* Flush the ERAT on radix P9 DD1 guest exit */ -BEGIN_FTR_SECTION - PPC_INVALIDATE_ERAT -END_FTR_SECTION_IFSET(CPU_FTR_POWER9_DD1) -4: +2: #endif /* CONFIG_PPC_RADIX_MMU */ /* @@ -3367,11 +3362,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_300) mtspr SPRN_CIABR, r0 mtspr SPRN_DAWRX, r0 - /* Flush the ERAT on radix P9 DD1 guest exit */ -BEGIN_FTR_SECTION - PPC_INVALIDATE_ERAT -END_FTR_SECTION_IFSET(CPU_FTR_POWER9_DD1) - BEGIN_MMU_FTR_SECTION b 4f END_MMU_FTR_SECTION_IFSET(MMU_FTR_TYPE_RADIX) diff --git a/arch/powerpc/kvm/book3s_interrupts.S b/arch/powerpc/kvm/book3s_interrupts.S index c18e845019ec..d71dab16dc6f 100644 --- a/arch/powerpc/kvm/book3s_interrupts.S +++ b/arch/powerpc/kvm/book3s_interrupts.S @@ -23,6 +23,7 @@ #include <asm/page.h> #include <asm/asm-offsets.h> #include <asm/exception-64s.h> +#include <asm/asm-compat.h> #if defined(CONFIG_PPC_BOOK3S_64) #ifdef PPC64_ELF_ABI_v2 diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index c3b8006f0eac..47ee43bbd696 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -27,7 +27,6 @@ #include <asm/reg.h> #include <asm/cputable.h> #include <asm/cacheflush.h> -#include <asm/tlbflush.h> #include <linux/uaccess.h> #include <asm/io.h> #include <asm/kvm_ppc.h> diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S b/arch/powerpc/kvm/book3s_rmhandlers.S index 34a5adeff084..b0089e04c8c8 100644 --- a/arch/powerpc/kvm/book3s_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_rmhandlers.S @@ -23,6 +23,7 @@ #include <asm/mmu.h> #include <asm/page.h> #include <asm/asm-offsets.h> +#include <asm/asm-compat.h> #ifdef CONFIG_PPC_BOOK3S_64 #include <asm/exception-64s.h> diff --git a/arch/powerpc/kvm/book3s_segment.S b/arch/powerpc/kvm/book3s_segment.S index 98ccc7ec5d48..e5c542a7c5ac 100644 --- a/arch/powerpc/kvm/book3s_segment.S +++ b/arch/powerpc/kvm/book3s_segment.S @@ -19,6 +19,9 @@ /* Real mode helpers */ +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> + #if defined(CONFIG_PPC_BOOK3S_64) #define GET_SHADOW_VCPU(reg) \ diff --git a/arch/powerpc/kvm/book3s_xive_template.c b/arch/powerpc/kvm/book3s_xive_template.c index 6e41ba7ec8f4..4171ede8722b 100644 --- a/arch/powerpc/kvm/book3s_xive_template.c +++ b/arch/powerpc/kvm/book3s_xive_template.c @@ -25,18 +25,6 @@ static void GLUE(X_PFX,ack_pending)(struct kvmppc_xive_vcpu *xc) */ eieio(); - /* - * DD1 bug workaround: If PIPR is less favored than CPPR - * ignore the interrupt or we might incorrectly lose an IPB - * bit. - */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - __be64 qw1 = __x_readq(__x_tima + TM_QW1_OS); - u8 pipr = be64_to_cpu(qw1) & 0xff; - if (pipr >= xc->hw_cppr) - return; - } - /* Perform the acknowledge OS to register cycle. */ ack = be16_to_cpu(__x_readw(__x_tima + TM_SPC_ACK_OS_REG)); @@ -89,8 +77,15 @@ static void GLUE(X_PFX,source_eoi)(u32 hw_irq, struct xive_irq_data *xd) /* If the XIVE supports the new "store EOI facility, use it */ if (xd->flags & XIVE_IRQ_FLAG_STORE_EOI) __x_writeq(0, __x_eoi_page(xd) + XIVE_ESB_STORE_EOI); - else if (hw_irq && xd->flags & XIVE_IRQ_FLAG_EOI_FW) { + else if (hw_irq && xd->flags & XIVE_IRQ_FLAG_EOI_FW) opal_int_eoi(hw_irq); + else if (xd->flags & XIVE_IRQ_FLAG_LSI) { + /* + * For LSIs the HW EOI cycle is used rather than PQ bits, + * as they are automatically re-triggred in HW when still + * pending. + */ + __x_readq(__x_eoi_page(xd) + XIVE_ESB_LOAD_EOI); } else { uint64_t eoi_val; @@ -102,20 +97,12 @@ static void GLUE(X_PFX,source_eoi)(u32 hw_irq, struct xive_irq_data *xd) * * This allows us to then do a re-trigger if Q was set * rather than synthetizing an interrupt in software - * - * For LSIs, using the HW EOI cycle works around a problem - * on P9 DD1 PHBs where the other ESB accesses don't work - * properly. */ - if (xd->flags & XIVE_IRQ_FLAG_LSI) - __x_readq(__x_eoi_page(xd) + XIVE_ESB_LOAD_EOI); - else { - eoi_val = GLUE(X_PFX,esb_load)(xd, XIVE_ESB_SET_PQ_00); - - /* Re-trigger if needed */ - if ((eoi_val & 1) && __x_trig_page(xd)) - __x_writeq(0, __x_trig_page(xd)); - } + eoi_val = GLUE(X_PFX,esb_load)(xd, XIVE_ESB_SET_PQ_00); + + /* Re-trigger if needed */ + if ((eoi_val & 1) && __x_trig_page(xd)) + __x_writeq(0, __x_trig_page(xd)); } } diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c index f9f6468f4171..afd3c255a427 100644 --- a/arch/powerpc/kvm/e500.c +++ b/arch/powerpc/kvm/e500.c @@ -21,7 +21,6 @@ #include <asm/reg.h> #include <asm/cputable.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include "../mm/mmu_decl.h" diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index d0b6b5788afc..d31645491a93 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -21,7 +21,6 @@ #include <asm/reg.h> #include <asm/cputable.h> -#include <asm/tlbflush.h> #include <asm/kvm_ppc.h> #include <asm/dbell.h> diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 0e8c20c5eaac..3ccc386b380d 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -33,7 +33,6 @@ #include <asm/cputable.h> #include <linux/uaccess.h> #include <asm/kvm_ppc.h> -#include <asm/tlbflush.h> #include <asm/cputhreads.h> #include <asm/irqflags.h> #include <asm/iommu.h> diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index d0ca13ad8231..670286808928 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -12,7 +12,7 @@ CFLAGS_REMOVE_feature-fixups.o = $(CC_FLAGS_FTRACE) obj-y += string.o alloc.o code-patching.o feature-fixups.o -obj-$(CONFIG_PPC32) += div64.o copy_32.o crtsavres.o +obj-$(CONFIG_PPC32) += div64.o copy_32.o crtsavres.o strlen_32.o # See corresponding test in arch/powerpc/Makefile # 64-bit linker creates .sfpr on demand for final link (vmlinux), diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index e0d881ab304e..850f3b8f4da5 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -195,6 +195,22 @@ int patch_branch(unsigned int *addr, unsigned long target, int flags) return patch_instruction(addr, create_branch(addr, target, flags)); } +int patch_branch_site(s32 *site, unsigned long target, int flags) +{ + unsigned int *addr; + + addr = (unsigned int *)((unsigned long)site + *site); + return patch_instruction(addr, create_branch(addr, target, flags)); +} + +int patch_instruction_site(s32 *site, unsigned int instr) +{ + unsigned int *addr; + + addr = (unsigned int *)((unsigned long)site + *site); + return patch_instruction(addr, instr); +} + bool is_offset_in_branch_range(long offset) { /* diff --git a/arch/powerpc/lib/copy_32.S b/arch/powerpc/lib/copy_32.S index da425bb6b369..ba66846fe973 100644 --- a/arch/powerpc/lib/copy_32.S +++ b/arch/powerpc/lib/copy_32.S @@ -13,6 +13,7 @@ #include <asm/errno.h> #include <asm/ppc_asm.h> #include <asm/export.h> +#include <asm/code-patching-asm.h> #define COPY_16_BYTES \ lwz r7,4(r4); \ @@ -107,8 +108,8 @@ _GLOBAL(memset) * Skip optimised bloc until cache is enabled. Will be replaced * by 'bne' during boot to use normal procedure if r4 is not zero */ -_GLOBAL(memset_nocache_branch) - b 2f +5: b 2f + patch_site 5b, patch__memset_nocache clrlwi r7,r6,32-LG_CACHELINE_BYTES add r8,r7,r5 @@ -168,7 +169,9 @@ _GLOBAL(memmove) /* fall through */ _GLOBAL(memcpy) - b generic_memcpy +1: b generic_memcpy + patch_site 1b, patch__memcpy_nocache + add r7,r3,r5 /* test if the src & dst overlap */ add r8,r4,r5 cmplw 0,r4,r7 diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S index 8d5034f645f3..694390357667 100644 --- a/arch/powerpc/lib/copypage_64.S +++ b/arch/powerpc/lib/copypage_64.S @@ -11,6 +11,7 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/export.h> +#include <asm/feature-fixups.h> .section ".toc","aw" PPC64_CACHES: diff --git a/arch/powerpc/lib/copypage_power7.S b/arch/powerpc/lib/copypage_power7.S index 8fa73b7ab20e..e38f956f7d9f 100644 --- a/arch/powerpc/lib/copypage_power7.S +++ b/arch/powerpc/lib/copypage_power7.S @@ -57,7 +57,7 @@ _GLOBAL(copypage_power7) std r4,-STACKFRAMESIZE+STK_REG(R30)(r1) std r0,16(r1) stdu r1,-STACKFRAMESIZE(r1) - bl enter_vmx_copy + bl enter_vmx_ops cmpwi r3,0 ld r0,STACKFRAMESIZE+16(r1) ld r3,STK_REG(R31)(r1) @@ -100,7 +100,7 @@ _GLOBAL(copypage_power7) addi r3,r3,128 bdnz 1b - b exit_vmx_copy /* tail call optimise */ + b exit_vmx_ops /* tail call optimise */ #else li r0,(PAGE_SIZE/128) diff --git a/arch/powerpc/lib/copyuser_64.S b/arch/powerpc/lib/copyuser_64.S index 506677395681..96c514bee66b 100644 --- a/arch/powerpc/lib/copyuser_64.S +++ b/arch/powerpc/lib/copyuser_64.S @@ -9,6 +9,13 @@ #include <asm/processor.h> #include <asm/ppc_asm.h> #include <asm/export.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> + +#ifndef SELFTEST_CASE +/* 0 == most CPUs, 1 == POWER6, 2 == Cell */ +#define SELFTEST_CASE 0 +#endif #ifdef __BIG_ENDIAN__ #define sLd sld /* Shift towards low-numbered address. */ @@ -18,6 +25,28 @@ #define sHd sld /* Shift towards high-numbered address. */ #endif +/* + * These macros are used to generate exception table entries. + * The exception handlers below use the original arguments + * (stored on the stack) and the point where we're up to in + * the destination buffer, i.e. the address of the first + * unmodified byte. Generally r3 points into the destination + * buffer, but the first unmodified byte is at a variable + * offset from r3. In the code below, the symbol r3_offset + * is set to indicate the current offset at each point in + * the code. This offset is then used as a negative offset + * from the exception handler code, and those instructions + * before the exception handlers are addi instructions that + * adjust r3 to point to the correct place. + */ + .macro lex /* exception handler for load */ +100: EX_TABLE(100b, .Lld_exc - r3_offset) + .endm + + .macro stex /* exception handler for store */ +100: EX_TABLE(100b, .Lst_exc - r3_offset) + .endm + .align 7 _GLOBAL_TOC(__copy_tofrom_user) #ifdef CONFIG_PPC_BOOK3S_64 @@ -28,7 +57,7 @@ FTR_SECTION_ELSE ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) #endif _GLOBAL(__copy_tofrom_user_base) - /* first check for a whole page copy on a page boundary */ + /* first check for a 4kB copy on a 4kB boundary */ cmpldi cr1,r5,16 cmpdi cr6,r5,4096 or r0,r3,r4 @@ -49,6 +78,7 @@ _GLOBAL(__copy_tofrom_user_base) * At the time of writing the only CPU that has this combination of bits * set is Power6. */ +test_feature = (SELFTEST_CASE == 1) BEGIN_FTR_SECTION nop FTR_SECTION_ELSE @@ -57,6 +87,8 @@ ALT_FTR_SECTION_END(CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_CP_USE_DCBTZ, \ CPU_FTR_UNALIGNED_LD_STD) .Ldst_aligned: addi r3,r3,-16 +r3_offset = 16 +test_feature = (SELFTEST_CASE == 0) BEGIN_FTR_SECTION andi. r0,r4,7 bne .Lsrc_unaligned @@ -64,57 +96,69 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) blt cr1,.Ldo_tail /* if < 16 bytes to copy */ srdi r0,r5,5 cmpdi cr1,r0,0 -20: ld r7,0(r4) -220: ld r6,8(r4) +lex; ld r7,0(r4) +lex; ld r6,8(r4) addi r4,r4,16 mtctr r0 andi. r0,r5,0x10 beq 22f addi r3,r3,16 +r3_offset = 0 addi r4,r4,-16 mr r9,r7 mr r8,r6 beq cr1,72f -21: ld r7,16(r4) -221: ld r6,24(r4) +21: +lex; ld r7,16(r4) +lex; ld r6,24(r4) addi r4,r4,32 -70: std r9,0(r3) -270: std r8,8(r3) -22: ld r9,0(r4) -222: ld r8,8(r4) -71: std r7,16(r3) -271: std r6,24(r3) +stex; std r9,0(r3) +r3_offset = 8 +stex; std r8,8(r3) +r3_offset = 16 +22: +lex; ld r9,0(r4) +lex; ld r8,8(r4) +stex; std r7,16(r3) +r3_offset = 24 +stex; std r6,24(r3) addi r3,r3,32 +r3_offset = 0 bdnz 21b -72: std r9,0(r3) -272: std r8,8(r3) +72: +stex; std r9,0(r3) +r3_offset = 8 +stex; std r8,8(r3) +r3_offset = 16 andi. r5,r5,0xf beq+ 3f addi r4,r4,16 .Ldo_tail: addi r3,r3,16 +r3_offset = 0 bf cr7*4+0,246f -244: ld r9,0(r4) +lex; ld r9,0(r4) addi r4,r4,8 -245: std r9,0(r3) +stex; std r9,0(r3) addi r3,r3,8 246: bf cr7*4+1,1f -23: lwz r9,0(r4) +lex; lwz r9,0(r4) addi r4,r4,4 -73: stw r9,0(r3) +stex; stw r9,0(r3) addi r3,r3,4 1: bf cr7*4+2,2f -44: lhz r9,0(r4) +lex; lhz r9,0(r4) addi r4,r4,2 -74: sth r9,0(r3) +stex; sth r9,0(r3) addi r3,r3,2 2: bf cr7*4+3,3f -45: lbz r9,0(r4) -75: stb r9,0(r3) +lex; lbz r9,0(r4) +stex; stb r9,0(r3) 3: li r3,0 blr .Lsrc_unaligned: +r3_offset = 16 srdi r6,r5,3 addi r5,r5,-16 subf r4,r0,r4 @@ -127,58 +171,69 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) add r5,r5,r0 bt cr7*4+0,28f -24: ld r9,0(r4) /* 3+2n loads, 2+2n stores */ -25: ld r0,8(r4) +lex; ld r9,0(r4) /* 3+2n loads, 2+2n stores */ +lex; ld r0,8(r4) sLd r6,r9,r10 -26: ldu r9,16(r4) +lex; ldu r9,16(r4) sHd r7,r0,r11 sLd r8,r0,r10 or r7,r7,r6 blt cr6,79f -27: ld r0,8(r4) +lex; ld r0,8(r4) b 2f -28: ld r0,0(r4) /* 4+2n loads, 3+2n stores */ -29: ldu r9,8(r4) +28: +lex; ld r0,0(r4) /* 4+2n loads, 3+2n stores */ +lex; ldu r9,8(r4) sLd r8,r0,r10 addi r3,r3,-8 +r3_offset = 24 blt cr6,5f -30: ld r0,8(r4) +lex; ld r0,8(r4) sHd r12,r9,r11 sLd r6,r9,r10 -31: ldu r9,16(r4) +lex; ldu r9,16(r4) or r12,r8,r12 sHd r7,r0,r11 sLd r8,r0,r10 addi r3,r3,16 +r3_offset = 8 beq cr6,78f 1: or r7,r7,r6 -32: ld r0,8(r4) -76: std r12,8(r3) +lex; ld r0,8(r4) +stex; std r12,8(r3) +r3_offset = 16 2: sHd r12,r9,r11 sLd r6,r9,r10 -33: ldu r9,16(r4) +lex; ldu r9,16(r4) or r12,r8,r12 -77: stdu r7,16(r3) +stex; stdu r7,16(r3) +r3_offset = 8 sHd r7,r0,r11 sLd r8,r0,r10 bdnz 1b -78: std r12,8(r3) +78: +stex; std r12,8(r3) +r3_offset = 16 or r7,r7,r6 -79: std r7,16(r3) +79: +stex; std r7,16(r3) +r3_offset = 24 5: sHd r12,r9,r11 or r12,r8,r12 -80: std r12,24(r3) +stex; std r12,24(r3) +r3_offset = 32 bne 6f li r3,0 blr 6: cmpwi cr1,r5,8 addi r3,r3,32 +r3_offset = 0 sLd r9,r9,r10 ble cr1,7f -34: ld r0,8(r4) +lex; ld r0,8(r4) sHd r7,r0,r11 or r9,r7,r9 7: @@ -186,7 +241,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) #ifdef __BIG_ENDIAN__ rotldi r9,r9,32 #endif -94: stw r9,0(r3) +stex; stw r9,0(r3) #ifdef __LITTLE_ENDIAN__ rotrdi r9,r9,32 #endif @@ -195,7 +250,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) #ifdef __BIG_ENDIAN__ rotldi r9,r9,16 #endif -95: sth r9,0(r3) +stex; sth r9,0(r3) #ifdef __LITTLE_ENDIAN__ rotrdi r9,r9,16 #endif @@ -204,7 +259,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) #ifdef __BIG_ENDIAN__ rotldi r9,r9,8 #endif -96: stb r9,0(r3) +stex; stb r9,0(r3) #ifdef __LITTLE_ENDIAN__ rotrdi r9,r9,8 #endif @@ -212,47 +267,55 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) blr .Ldst_unaligned: +r3_offset = 0 PPC_MTOCRF(0x01,r6) /* put #bytes to 8B bdry into cr7 */ subf r5,r6,r5 li r7,0 cmpldi cr1,r5,16 bf cr7*4+3,1f -35: lbz r0,0(r4) -81: stb r0,0(r3) +100: EX_TABLE(100b, .Lld_exc_r7) + lbz r0,0(r4) +100: EX_TABLE(100b, .Lst_exc_r7) + stb r0,0(r3) addi r7,r7,1 1: bf cr7*4+2,2f -36: lhzx r0,r7,r4 -82: sthx r0,r7,r3 +100: EX_TABLE(100b, .Lld_exc_r7) + lhzx r0,r7,r4 +100: EX_TABLE(100b, .Lst_exc_r7) + sthx r0,r7,r3 addi r7,r7,2 2: bf cr7*4+1,3f -37: lwzx r0,r7,r4 -83: stwx r0,r7,r3 +100: EX_TABLE(100b, .Lld_exc_r7) + lwzx r0,r7,r4 +100: EX_TABLE(100b, .Lst_exc_r7) + stwx r0,r7,r3 3: PPC_MTOCRF(0x01,r5) add r4,r6,r4 add r3,r6,r3 b .Ldst_aligned .Lshort_copy: +r3_offset = 0 bf cr7*4+0,1f -38: lwz r0,0(r4) -39: lwz r9,4(r4) +lex; lwz r0,0(r4) +lex; lwz r9,4(r4) addi r4,r4,8 -84: stw r0,0(r3) -85: stw r9,4(r3) +stex; stw r0,0(r3) +stex; stw r9,4(r3) addi r3,r3,8 1: bf cr7*4+1,2f -40: lwz r0,0(r4) +lex; lwz r0,0(r4) addi r4,r4,4 -86: stw r0,0(r3) +stex; stw r0,0(r3) addi r3,r3,4 2: bf cr7*4+2,3f -41: lhz r0,0(r4) +lex; lhz r0,0(r4) addi r4,r4,2 -87: sth r0,0(r3) +stex; sth r0,0(r3) addi r3,r3,2 3: bf cr7*4+3,4f -42: lbz r0,0(r4) -88: stb r0,0(r3) +lex; lbz r0,0(r4) +stex; stb r0,0(r3) 4: li r3,0 blr @@ -260,48 +323,34 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) * exception handlers follow * we have to return the number of bytes not copied * for an exception on a load, we set the rest of the destination to 0 + * Note that the number of bytes of instructions for adjusting r3 needs + * to equal the amount of the adjustment, due to the trick of using + * .Lld_exc - r3_offset as the handler address. */ -136: -137: +.Lld_exc_r7: add r3,r3,r7 - b 1f -130: -131: + b .Lld_exc + + /* adjust by 24 */ addi r3,r3,8 -120: -320: -122: -322: -124: -125: -126: -127: -128: -129: -133: + nop + /* adjust by 16 */ addi r3,r3,8 -132: + nop + /* adjust by 8 */ addi r3,r3,8 -121: -321: -344: -134: -135: -138: -139: -140: -141: -142: -123: -144: -145: + nop /* - * here we have had a fault on a load and r3 points to the first - * unmodified byte of the destination + * Here we have had a fault on a load and r3 points to the first + * unmodified byte of the destination. We use the original arguments + * and r3 to work out how much wasn't copied. Since we load some + * distance ahead of the stores, we continue copying byte-by-byte until + * we hit the load fault again in order to copy as much as possible. */ -1: ld r6,-24(r1) +.Lld_exc: + ld r6,-24(r1) ld r4,-16(r1) ld r5,-8(r1) subf r6,r6,r3 @@ -312,9 +361,11 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) * first see if we can copy any more bytes before hitting another exception */ mtctr r5 +r3_offset = 0 +100: EX_TABLE(100b, .Ldone) 43: lbz r0,0(r4) addi r4,r4,1 -89: stb r0,0(r3) +stex; stb r0,0(r3) addi r3,r3,1 bdnz 43b li r3,0 /* huh? all copied successfully this time? */ @@ -323,116 +374,63 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) /* * here we have trapped again, amount remaining is in ctr. */ -143: mfctr r3 +.Ldone: + mfctr r3 blr /* - * exception handlers for stores: we just need to work - * out how many bytes weren't copied + * exception handlers for stores: we need to work out how many bytes + * weren't copied, and we may need to copy some more. + * Note that the number of bytes of instructions for adjusting r3 needs + * to equal the amount of the adjustment, due to the trick of using + * .Lst_exc - r3_offset as the handler address. */ -182: -183: +.Lst_exc_r7: add r3,r3,r7 - b 1f -371: -180: + b .Lst_exc + + /* adjust by 24 */ addi r3,r3,8 -171: -177: -179: + nop + /* adjust by 16 */ addi r3,r3,8 -370: -372: -176: -178: + nop + /* adjust by 8 */ addi r3,r3,4 -185: + /* adjust by 4 */ addi r3,r3,4 -170: -172: -345: -173: -174: -175: -181: -184: -186: -187: -188: -189: -194: -195: -196: -1: - ld r6,-24(r1) - ld r5,-8(r1) - add r6,r6,r5 - subf r3,r3,r6 /* #bytes not copied */ +.Lst_exc: + ld r6,-24(r1) /* original destination pointer */ + ld r4,-16(r1) /* original source pointer */ + ld r5,-8(r1) /* original number of bytes */ + add r7,r6,r5 + /* + * If the destination pointer isn't 8-byte aligned, + * we may have got the exception as a result of a + * store that overlapped a page boundary, so we may be + * able to copy a few more bytes. + */ +17: andi. r0,r3,7 + beq 19f + subf r8,r6,r3 /* #bytes copied */ +100: EX_TABLE(100b,19f) + lbzx r0,r8,r4 +100: EX_TABLE(100b,19f) + stb r0,0(r3) + addi r3,r3,1 + cmpld r3,r7 + blt 17b +19: subf r3,r3,r7 /* #bytes not copied in r3 */ blr - EX_TABLE(20b,120b) - EX_TABLE(220b,320b) - EX_TABLE(21b,121b) - EX_TABLE(221b,321b) - EX_TABLE(70b,170b) - EX_TABLE(270b,370b) - EX_TABLE(22b,122b) - EX_TABLE(222b,322b) - EX_TABLE(71b,171b) - EX_TABLE(271b,371b) - EX_TABLE(72b,172b) - EX_TABLE(272b,372b) - EX_TABLE(244b,344b) - EX_TABLE(245b,345b) - EX_TABLE(23b,123b) - EX_TABLE(73b,173b) - EX_TABLE(44b,144b) - EX_TABLE(74b,174b) - EX_TABLE(45b,145b) - EX_TABLE(75b,175b) - EX_TABLE(24b,124b) - EX_TABLE(25b,125b) - EX_TABLE(26b,126b) - EX_TABLE(27b,127b) - EX_TABLE(28b,128b) - EX_TABLE(29b,129b) - EX_TABLE(30b,130b) - EX_TABLE(31b,131b) - EX_TABLE(32b,132b) - EX_TABLE(76b,176b) - EX_TABLE(33b,133b) - EX_TABLE(77b,177b) - EX_TABLE(78b,178b) - EX_TABLE(79b,179b) - EX_TABLE(80b,180b) - EX_TABLE(34b,134b) - EX_TABLE(94b,194b) - EX_TABLE(95b,195b) - EX_TABLE(96b,196b) - EX_TABLE(35b,135b) - EX_TABLE(81b,181b) - EX_TABLE(36b,136b) - EX_TABLE(82b,182b) - EX_TABLE(37b,137b) - EX_TABLE(83b,183b) - EX_TABLE(38b,138b) - EX_TABLE(39b,139b) - EX_TABLE(84b,184b) - EX_TABLE(85b,185b) - EX_TABLE(40b,140b) - EX_TABLE(86b,186b) - EX_TABLE(41b,141b) - EX_TABLE(87b,187b) - EX_TABLE(42b,142b) - EX_TABLE(88b,188b) - EX_TABLE(43b,143b) - EX_TABLE(89b,189b) - /* * Routine to copy a whole page of data, optimized for POWER4. * On POWER4 it is more than 50% faster than the simple loop * above (following the .Ldst_aligned label). */ + .macro exc +100: EX_TABLE(100b, .Labort) + .endm .Lcopy_page_4K: std r31,-32(1) std r30,-40(1) @@ -451,86 +449,86 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) li r0,5 0: addi r5,r5,-24 mtctr r0 -20: ld r22,640(4) -21: ld r21,512(4) -22: ld r20,384(4) -23: ld r11,256(4) -24: ld r9,128(4) -25: ld r7,0(4) -26: ld r25,648(4) -27: ld r24,520(4) -28: ld r23,392(4) -29: ld r10,264(4) -30: ld r8,136(4) -31: ldu r6,8(4) +exc; ld r22,640(4) +exc; ld r21,512(4) +exc; ld r20,384(4) +exc; ld r11,256(4) +exc; ld r9,128(4) +exc; ld r7,0(4) +exc; ld r25,648(4) +exc; ld r24,520(4) +exc; ld r23,392(4) +exc; ld r10,264(4) +exc; ld r8,136(4) +exc; ldu r6,8(4) cmpwi r5,24 1: -32: std r22,648(3) -33: std r21,520(3) -34: std r20,392(3) -35: std r11,264(3) -36: std r9,136(3) -37: std r7,8(3) -38: ld r28,648(4) -39: ld r27,520(4) -40: ld r26,392(4) -41: ld r31,264(4) -42: ld r30,136(4) -43: ld r29,8(4) -44: std r25,656(3) -45: std r24,528(3) -46: std r23,400(3) -47: std r10,272(3) -48: std r8,144(3) -49: std r6,16(3) -50: ld r22,656(4) -51: ld r21,528(4) -52: ld r20,400(4) -53: ld r11,272(4) -54: ld r9,144(4) -55: ld r7,16(4) -56: std r28,664(3) -57: std r27,536(3) -58: std r26,408(3) -59: std r31,280(3) -60: std r30,152(3) -61: stdu r29,24(3) -62: ld r25,664(4) -63: ld r24,536(4) -64: ld r23,408(4) -65: ld r10,280(4) -66: ld r8,152(4) -67: ldu r6,24(4) +exc; std r22,648(3) +exc; std r21,520(3) +exc; std r20,392(3) +exc; std r11,264(3) +exc; std r9,136(3) +exc; std r7,8(3) +exc; ld r28,648(4) +exc; ld r27,520(4) +exc; ld r26,392(4) +exc; ld r31,264(4) +exc; ld r30,136(4) +exc; ld r29,8(4) +exc; std r25,656(3) +exc; std r24,528(3) +exc; std r23,400(3) +exc; std r10,272(3) +exc; std r8,144(3) +exc; std r6,16(3) +exc; ld r22,656(4) +exc; ld r21,528(4) +exc; ld r20,400(4) +exc; ld r11,272(4) +exc; ld r9,144(4) +exc; ld r7,16(4) +exc; std r28,664(3) +exc; std r27,536(3) +exc; std r26,408(3) +exc; std r31,280(3) +exc; std r30,152(3) +exc; stdu r29,24(3) +exc; ld r25,664(4) +exc; ld r24,536(4) +exc; ld r23,408(4) +exc; ld r10,280(4) +exc; ld r8,152(4) +exc; ldu r6,24(4) bdnz 1b -68: std r22,648(3) -69: std r21,520(3) -70: std r20,392(3) -71: std r11,264(3) -72: std r9,136(3) -73: std r7,8(3) -74: addi r4,r4,640 -75: addi r3,r3,648 +exc; std r22,648(3) +exc; std r21,520(3) +exc; std r20,392(3) +exc; std r11,264(3) +exc; std r9,136(3) +exc; std r7,8(3) + addi r4,r4,640 + addi r3,r3,648 bge 0b mtctr r5 -76: ld r7,0(4) -77: ld r8,8(4) -78: ldu r9,16(4) +exc; ld r7,0(4) +exc; ld r8,8(4) +exc; ldu r9,16(4) 3: -79: ld r10,8(4) -80: std r7,8(3) -81: ld r7,16(4) -82: std r8,16(3) -83: ld r8,24(4) -84: std r9,24(3) -85: ldu r9,32(4) -86: stdu r10,32(3) +exc; ld r10,8(4) +exc; std r7,8(3) +exc; ld r7,16(4) +exc; std r8,16(3) +exc; ld r8,24(4) +exc; std r9,24(3) +exc; ldu r9,32(4) +exc; stdu r10,32(3) bdnz 3b 4: -87: ld r10,8(4) -88: std r7,8(3) -89: std r8,16(3) -90: std r9,24(3) -91: std r10,32(3) +exc; ld r10,8(4) +exc; std r7,8(3) +exc; std r8,16(3) +exc; std r9,24(3) +exc; std r10,32(3) 9: ld r20,-120(1) ld r21,-112(1) ld r22,-104(1) @@ -550,7 +548,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) * on an exception, reset to the beginning and jump back into the * standard __copy_tofrom_user */ -100: ld r20,-120(1) +.Labort: + ld r20,-120(1) ld r21,-112(1) ld r22,-104(1) ld r23,-96(1) @@ -566,78 +565,4 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) ld r4,-16(r1) li r5,4096 b .Ldst_aligned - - EX_TABLE(20b,100b) - EX_TABLE(21b,100b) - EX_TABLE(22b,100b) - EX_TABLE(23b,100b) - EX_TABLE(24b,100b) - EX_TABLE(25b,100b) - EX_TABLE(26b,100b) - EX_TABLE(27b,100b) - EX_TABLE(28b,100b) - EX_TABLE(29b,100b) - EX_TABLE(30b,100b) - EX_TABLE(31b,100b) - EX_TABLE(32b,100b) - EX_TABLE(33b,100b) - EX_TABLE(34b,100b) - EX_TABLE(35b,100b) - EX_TABLE(36b,100b) - EX_TABLE(37b,100b) - EX_TABLE(38b,100b) - EX_TABLE(39b,100b) - EX_TABLE(40b,100b) - EX_TABLE(41b,100b) - EX_TABLE(42b,100b) - EX_TABLE(43b,100b) - EX_TABLE(44b,100b) - EX_TABLE(45b,100b) - EX_TABLE(46b,100b) - EX_TABLE(47b,100b) - EX_TABLE(48b,100b) - EX_TABLE(49b,100b) - EX_TABLE(50b,100b) - EX_TABLE(51b,100b) - EX_TABLE(52b,100b) - EX_TABLE(53b,100b) - EX_TABLE(54b,100b) - EX_TABLE(55b,100b) - EX_TABLE(56b,100b) - EX_TABLE(57b,100b) - EX_TABLE(58b,100b) - EX_TABLE(59b,100b) - EX_TABLE(60b,100b) - EX_TABLE(61b,100b) - EX_TABLE(62b,100b) - EX_TABLE(63b,100b) - EX_TABLE(64b,100b) - EX_TABLE(65b,100b) - EX_TABLE(66b,100b) - EX_TABLE(67b,100b) - EX_TABLE(68b,100b) - EX_TABLE(69b,100b) - EX_TABLE(70b,100b) - EX_TABLE(71b,100b) - EX_TABLE(72b,100b) - EX_TABLE(73b,100b) - EX_TABLE(74b,100b) - EX_TABLE(75b,100b) - EX_TABLE(76b,100b) - EX_TABLE(77b,100b) - EX_TABLE(78b,100b) - EX_TABLE(79b,100b) - EX_TABLE(80b,100b) - EX_TABLE(81b,100b) - EX_TABLE(82b,100b) - EX_TABLE(83b,100b) - EX_TABLE(84b,100b) - EX_TABLE(85b,100b) - EX_TABLE(86b,100b) - EX_TABLE(87b,100b) - EX_TABLE(88b,100b) - EX_TABLE(89b,100b) - EX_TABLE(90b,100b) - EX_TABLE(91b,100b) - EXPORT_SYMBOL(__copy_tofrom_user) diff --git a/arch/powerpc/lib/copyuser_power7.S b/arch/powerpc/lib/copyuser_power7.S index 215e4760c09f..1a1fe180af62 100644 --- a/arch/powerpc/lib/copyuser_power7.S +++ b/arch/powerpc/lib/copyuser_power7.S @@ -19,6 +19,11 @@ */ #include <asm/ppc_asm.h> +#ifndef SELFTEST_CASE +/* 0 == don't use VMX, 1 == use VMX */ +#define SELFTEST_CASE 0 +#endif + #ifdef __BIG_ENDIAN__ #define LVS(VRT,RA,RB) lvsl VRT,RA,RB #define VPERM(VRT,VRA,VRB,VRC) vperm VRT,VRA,VRB,VRC @@ -80,7 +85,6 @@ _GLOBAL(__copy_tofrom_user_power7) -#ifdef CONFIG_ALTIVEC cmpldi r5,16 cmpldi cr1,r5,3328 @@ -89,15 +93,12 @@ _GLOBAL(__copy_tofrom_user_power7) std r5,-STACKFRAMESIZE+STK_REG(R29)(r1) blt .Lshort_copy - bge cr1,.Lvmx_copy -#else - cmpldi r5,16 - std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) - std r4,-STACKFRAMESIZE+STK_REG(R30)(r1) - std r5,-STACKFRAMESIZE+STK_REG(R29)(r1) - - blt .Lshort_copy +#ifdef CONFIG_ALTIVEC +test_feature = SELFTEST_CASE +BEGIN_FTR_SECTION + bgt cr1,.Lvmx_copy +END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) #endif .Lnonvmx_copy: @@ -278,8 +279,8 @@ err1; stb r0,0(r3) addi r1,r1,STACKFRAMESIZE b .Lnonvmx_copy -#ifdef CONFIG_ALTIVEC .Lvmx_copy: +#ifdef CONFIG_ALTIVEC mflr r0 std r0,16(r1) stdu r1,-STACKFRAMESIZE(r1) diff --git a/arch/powerpc/lib/feature-fixups-test.S b/arch/powerpc/lib/feature-fixups-test.S index f16cec989506..ee7c5fd5fc64 100644 --- a/arch/powerpc/lib/feature-fixups-test.S +++ b/arch/powerpc/lib/feature-fixups-test.S @@ -11,6 +11,7 @@ #include <asm/feature-fixups.h> #include <asm/ppc_asm.h> #include <asm/synch.h> +#include <asm/asm-compat.h> .text diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index 8b69f868298c..e613b02bb2f0 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -304,6 +304,9 @@ void do_barrier_nospec_fixups_range(bool enable, void *fixup_start, void *fixup_ printk(KERN_DEBUG "barrier-nospec: patched %d locations\n", i); } +#endif /* CONFIG_PPC_BOOK3S_64 */ + +#ifdef CONFIG_PPC_BARRIER_NOSPEC void do_barrier_nospec_fixups(bool enable) { void *start, *end; @@ -313,8 +316,38 @@ void do_barrier_nospec_fixups(bool enable) do_barrier_nospec_fixups_range(enable, start, end); } +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ -#endif /* CONFIG_PPC_BOOK3S_64 */ +#ifdef CONFIG_PPC_FSL_BOOK3E +void do_barrier_nospec_fixups_range(bool enable, void *fixup_start, void *fixup_end) +{ + unsigned int instr[2], *dest; + long *start, *end; + int i; + + start = fixup_start; + end = fixup_end; + + instr[0] = PPC_INST_NOP; + instr[1] = PPC_INST_NOP; + + if (enable) { + pr_info("barrier-nospec: using isync; sync as speculation barrier\n"); + instr[0] = PPC_INST_ISYNC; + instr[1] = PPC_INST_SYNC; + } + + for (i = 0; start < end; start++, i++) { + dest = (void *)start + *start; + + pr_devel("patching dest %lx\n", (unsigned long)dest); + patch_instruction(dest, instr[0]); + patch_instruction(dest + 1, instr[1]); + } + + printk(KERN_DEBUG "barrier-nospec: patched %d locations\n", i); +} +#endif /* CONFIG_PPC_FSL_BOOK3E */ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end) { diff --git a/arch/powerpc/lib/hweight_64.S b/arch/powerpc/lib/hweight_64.S index 3de7ac154f24..0526b2225260 100644 --- a/arch/powerpc/lib/hweight_64.S +++ b/arch/powerpc/lib/hweight_64.S @@ -20,6 +20,7 @@ #include <asm/processor.h> #include <asm/ppc_asm.h> #include <asm/export.h> +#include <asm/feature-fixups.h> /* Note: This code relies on -mminimal-toc */ diff --git a/arch/powerpc/lib/ldstfp.S b/arch/powerpc/lib/ldstfp.S index ae15eba49c1f..32e91994b6b2 100644 --- a/arch/powerpc/lib/ldstfp.S +++ b/arch/powerpc/lib/ldstfp.S @@ -15,6 +15,7 @@ #include <asm/ppc-opcode.h> #include <asm/reg.h> #include <asm/asm-offsets.h> +#include <asm/asm-compat.h> #include <linux/errno.h> #ifdef CONFIG_PPC_FPU diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c index b7b1237d4aa6..35a0ef932e1a 100644 --- a/arch/powerpc/lib/locks.c +++ b/arch/powerpc/lib/locks.c @@ -15,7 +15,6 @@ #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/export.h> -#include <linux/stringify.h> #include <linux/smp.h> /* waiting for a spinlock... */ diff --git a/arch/powerpc/lib/memcmp_64.S b/arch/powerpc/lib/memcmp_64.S index d75d18b7bd55..844d8e774492 100644 --- a/arch/powerpc/lib/memcmp_64.S +++ b/arch/powerpc/lib/memcmp_64.S @@ -9,6 +9,7 @@ */ #include <asm/ppc_asm.h> #include <asm/export.h> +#include <asm/ppc-opcode.h> #define off8 r6 #define off16 r7 @@ -24,28 +25,102 @@ #define rH r31 #ifdef __LITTLE_ENDIAN__ +#define LH lhbrx +#define LW lwbrx #define LD ldbrx +#define LVS lvsr +#define VPERM(_VRT,_VRA,_VRB,_VRC) \ + vperm _VRT,_VRB,_VRA,_VRC #else +#define LH lhzx +#define LW lwzx #define LD ldx +#define LVS lvsl +#define VPERM(_VRT,_VRA,_VRB,_VRC) \ + vperm _VRT,_VRA,_VRB,_VRC #endif -_GLOBAL(memcmp) +#define VMX_THRESH 4096 +#define ENTER_VMX_OPS \ + mflr r0; \ + std r3,-STACKFRAMESIZE+STK_REG(R31)(r1); \ + std r4,-STACKFRAMESIZE+STK_REG(R30)(r1); \ + std r5,-STACKFRAMESIZE+STK_REG(R29)(r1); \ + std r0,16(r1); \ + stdu r1,-STACKFRAMESIZE(r1); \ + bl enter_vmx_ops; \ + cmpwi cr1,r3,0; \ + ld r0,STACKFRAMESIZE+16(r1); \ + ld r3,STK_REG(R31)(r1); \ + ld r4,STK_REG(R30)(r1); \ + ld r5,STK_REG(R29)(r1); \ + addi r1,r1,STACKFRAMESIZE; \ + mtlr r0 + +#define EXIT_VMX_OPS \ + mflr r0; \ + std r3,-STACKFRAMESIZE+STK_REG(R31)(r1); \ + std r4,-STACKFRAMESIZE+STK_REG(R30)(r1); \ + std r5,-STACKFRAMESIZE+STK_REG(R29)(r1); \ + std r0,16(r1); \ + stdu r1,-STACKFRAMESIZE(r1); \ + bl exit_vmx_ops; \ + ld r0,STACKFRAMESIZE+16(r1); \ + ld r3,STK_REG(R31)(r1); \ + ld r4,STK_REG(R30)(r1); \ + ld r5,STK_REG(R29)(r1); \ + addi r1,r1,STACKFRAMESIZE; \ + mtlr r0 + +/* + * LD_VSR_CROSS16B load the 2nd 16 bytes for _vaddr which is unaligned with + * 16 bytes boundary and permute the result with the 1st 16 bytes. + + * | y y y y y y y y y y y y y 0 1 2 | 3 4 5 6 7 8 9 a b c d e f z z z | + * ^ ^ ^ + * 0xbbbb10 0xbbbb20 0xbbb30 + * ^ + * _vaddr + * + * + * _vmask is the mask generated by LVS + * _v1st_qw is the 1st aligned QW of current addr which is already loaded. + * for example: 0xyyyyyyyyyyyyy012 for big endian + * _v2nd_qw is the 2nd aligned QW of cur _vaddr to be loaded. + * for example: 0x3456789abcdefzzz for big endian + * The permute result is saved in _v_res. + * for example: 0x0123456789abcdef for big endian. + */ +#define LD_VSR_CROSS16B(_vaddr,_vmask,_v1st_qw,_v2nd_qw,_v_res) \ + lvx _v2nd_qw,_vaddr,off16; \ + VPERM(_v_res,_v1st_qw,_v2nd_qw,_vmask) + +/* + * There are 2 categories for memcmp: + * 1) src/dst has the same offset to the 8 bytes boundary. The handlers + * are named like .Lsameoffset_xxxx + * 2) src/dst has different offset to the 8 bytes boundary. The handlers + * are named like .Ldiffoffset_xxxx + */ +_GLOBAL_TOC(memcmp) cmpdi cr1,r5,0 - /* Use the short loop if both strings are not 8B aligned */ - or r6,r3,r4 + /* Use the short loop if the src/dst addresses are not + * with the same offset of 8 bytes align boundary. + */ + xor r6,r3,r4 andi. r6,r6,7 - /* Use the short loop if length is less than 32B */ - cmpdi cr6,r5,31 + /* Fall back to short loop if compare at aligned addrs + * with less than 8 bytes. + */ + cmpdi cr6,r5,7 beq cr1,.Lzero - bne .Lshort - bgt cr6,.Llong + bgt cr6,.Lno_short .Lshort: mtctr r5 - 1: lbz rA,0(r3) lbz rB,0(r4) subf. rC,rB,rA @@ -78,11 +153,98 @@ _GLOBAL(memcmp) li r3,0 blr +.Lno_short: + dcbt 0,r3 + dcbt 0,r4 + bne .Ldiffoffset_8bytes_make_align_start + + +.Lsameoffset_8bytes_make_align_start: + /* attempt to compare bytes not aligned with 8 bytes so that + * rest comparison can run based on 8 bytes alignment. + */ + andi. r6,r3,7 + + /* Try to compare the first double word which is not 8 bytes aligned: + * load the first double word at (src & ~7UL) and shift left appropriate + * bits before comparision. + */ + rlwinm r6,r3,3,26,28 + beq .Lsameoffset_8bytes_aligned + clrrdi r3,r3,3 + clrrdi r4,r4,3 + LD rA,0,r3 + LD rB,0,r4 + sld rA,rA,r6 + sld rB,rB,r6 + cmpld cr0,rA,rB + srwi r6,r6,3 + bne cr0,.LcmpAB_lightweight + subfic r6,r6,8 + subf. r5,r6,r5 + addi r3,r3,8 + addi r4,r4,8 + beq .Lzero + +.Lsameoffset_8bytes_aligned: + /* now we are aligned with 8 bytes. + * Use .Llong loop if left cmp bytes are equal or greater than 32B. + */ + cmpdi cr6,r5,31 + bgt cr6,.Llong + +.Lcmp_lt32bytes: + /* compare 1 ~ 31 bytes, at least r3 addr is 8 bytes aligned now */ + cmpdi cr5,r5,7 + srdi r0,r5,3 + ble cr5,.Lcmp_rest_lt8bytes + + /* handle 8 ~ 31 bytes */ + clrldi r5,r5,61 + mtctr r0 +2: + LD rA,0,r3 + LD rB,0,r4 + cmpld cr0,rA,rB + addi r3,r3,8 + addi r4,r4,8 + bne cr0,.LcmpAB_lightweight + bdnz 2b + + cmpwi r5,0 + beq .Lzero + +.Lcmp_rest_lt8bytes: + /* Here we have only less than 8 bytes to compare with. at least s1 + * Address is aligned with 8 bytes. + * The next double words are load and shift right with appropriate + * bits. + */ + subfic r6,r5,8 + slwi r6,r6,3 + LD rA,0,r3 + LD rB,0,r4 + srd rA,rA,r6 + srd rB,rB,r6 + cmpld cr0,rA,rB + bne cr0,.LcmpAB_lightweight + b .Lzero + .Lnon_zero: mr r3,rC blr .Llong: +#ifdef CONFIG_ALTIVEC +BEGIN_FTR_SECTION + /* Try to use vmx loop if length is equal or greater than 4K */ + cmpldi cr6,r5,VMX_THRESH + bge cr6,.Lsameoffset_vmx_cmp +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) + +.Llong_novmx_cmp: +#endif + /* At least s1 addr is aligned with 8 bytes */ li off8,8 li off16,16 li off24,24 @@ -232,4 +394,240 @@ _GLOBAL(memcmp) ld r28,-32(r1) ld r27,-40(r1) blr + +.LcmpAB_lightweight: /* skip NV GPRS restore */ + li r3,1 + bgtlr + li r3,-1 + blr + +#ifdef CONFIG_ALTIVEC +.Lsameoffset_vmx_cmp: + /* Enter with src/dst addrs has the same offset with 8 bytes + * align boundary. + * + * There is an optimization based on following fact: memcmp() + * prones to fail early at the first 32 bytes. + * Before applying VMX instructions which will lead to 32x128bits + * VMX regs load/restore penalty, we compare the first 32 bytes + * so that we can catch the ~80% fail cases. + */ + + li r0,4 + mtctr r0 +.Lsameoffset_prechk_32B_loop: + LD rA,0,r3 + LD rB,0,r4 + cmpld cr0,rA,rB + addi r3,r3,8 + addi r4,r4,8 + bne cr0,.LcmpAB_lightweight + addi r5,r5,-8 + bdnz .Lsameoffset_prechk_32B_loop + + ENTER_VMX_OPS + beq cr1,.Llong_novmx_cmp + +3: + /* need to check whether r4 has the same offset with r3 + * for 16 bytes boundary. + */ + xor r0,r3,r4 + andi. r0,r0,0xf + bne .Ldiffoffset_vmx_cmp_start + + /* len is no less than 4KB. Need to align with 16 bytes further. + */ + andi. rA,r3,8 + LD rA,0,r3 + beq 4f + LD rB,0,r4 + cmpld cr0,rA,rB + addi r3,r3,8 + addi r4,r4,8 + addi r5,r5,-8 + + beq cr0,4f + /* save and restore cr0 */ + mfocrf r5,128 + EXIT_VMX_OPS + mtocrf 128,r5 + b .LcmpAB_lightweight + +4: + /* compare 32 bytes for each loop */ + srdi r0,r5,5 + mtctr r0 + clrldi r5,r5,59 + li off16,16 + +.balign 16 +5: + lvx v0,0,r3 + lvx v1,0,r4 + VCMPEQUD_RC(v0,v0,v1) + bnl cr6,7f + lvx v0,off16,r3 + lvx v1,off16,r4 + VCMPEQUD_RC(v0,v0,v1) + bnl cr6,6f + addi r3,r3,32 + addi r4,r4,32 + bdnz 5b + + EXIT_VMX_OPS + cmpdi r5,0 + beq .Lzero + b .Lcmp_lt32bytes + +6: + addi r3,r3,16 + addi r4,r4,16 + +7: + /* diff the last 16 bytes */ + EXIT_VMX_OPS + LD rA,0,r3 + LD rB,0,r4 + cmpld cr0,rA,rB + li off8,8 + bne cr0,.LcmpAB_lightweight + + LD rA,off8,r3 + LD rB,off8,r4 + cmpld cr0,rA,rB + bne cr0,.LcmpAB_lightweight + b .Lzero +#endif + +.Ldiffoffset_8bytes_make_align_start: + /* now try to align s1 with 8 bytes */ + rlwinm r6,r3,3,26,28 + beq .Ldiffoffset_align_s1_8bytes + + clrrdi r3,r3,3 + LD rA,0,r3 + LD rB,0,r4 /* unaligned load */ + sld rA,rA,r6 + srd rA,rA,r6 + srd rB,rB,r6 + cmpld cr0,rA,rB + srwi r6,r6,3 + bne cr0,.LcmpAB_lightweight + + subfic r6,r6,8 + subf. r5,r6,r5 + addi r3,r3,8 + add r4,r4,r6 + + beq .Lzero + +.Ldiffoffset_align_s1_8bytes: + /* now s1 is aligned with 8 bytes. */ +#ifdef CONFIG_ALTIVEC +BEGIN_FTR_SECTION + /* only do vmx ops when the size equal or greater than 4K bytes */ + cmpdi cr5,r5,VMX_THRESH + bge cr5,.Ldiffoffset_vmx_cmp +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) + +.Ldiffoffset_novmx_cmp: +#endif + + + cmpdi cr5,r5,31 + ble cr5,.Lcmp_lt32bytes + +#ifdef CONFIG_ALTIVEC + b .Llong_novmx_cmp +#else + b .Llong +#endif + +#ifdef CONFIG_ALTIVEC +.Ldiffoffset_vmx_cmp: + /* perform a 32 bytes pre-checking before + * enable VMX operations. + */ + li r0,4 + mtctr r0 +.Ldiffoffset_prechk_32B_loop: + LD rA,0,r3 + LD rB,0,r4 + cmpld cr0,rA,rB + addi r3,r3,8 + addi r4,r4,8 + bne cr0,.LcmpAB_lightweight + addi r5,r5,-8 + bdnz .Ldiffoffset_prechk_32B_loop + + ENTER_VMX_OPS + beq cr1,.Ldiffoffset_novmx_cmp + +.Ldiffoffset_vmx_cmp_start: + /* Firstly try to align r3 with 16 bytes */ + andi. r6,r3,0xf + li off16,16 + beq .Ldiffoffset_vmx_s1_16bytes_align + + LVS v3,0,r3 + LVS v4,0,r4 + + lvx v5,0,r3 + lvx v6,0,r4 + LD_VSR_CROSS16B(r3,v3,v5,v7,v9) + LD_VSR_CROSS16B(r4,v4,v6,v8,v10) + + VCMPEQUB_RC(v7,v9,v10) + bnl cr6,.Ldiffoffset_vmx_diff_found + + subfic r6,r6,16 + subf r5,r6,r5 + add r3,r3,r6 + add r4,r4,r6 + +.Ldiffoffset_vmx_s1_16bytes_align: + /* now s1 is aligned with 16 bytes */ + lvx v6,0,r4 + LVS v4,0,r4 + srdi r6,r5,5 /* loop for 32 bytes each */ + clrldi r5,r5,59 + mtctr r6 + +.balign 16 +.Ldiffoffset_vmx_32bytesloop: + /* the first qw of r4 was saved in v6 */ + lvx v9,0,r3 + LD_VSR_CROSS16B(r4,v4,v6,v8,v10) + VCMPEQUB_RC(v7,v9,v10) + vor v6,v8,v8 + bnl cr6,.Ldiffoffset_vmx_diff_found + + addi r3,r3,16 + addi r4,r4,16 + + lvx v9,0,r3 + LD_VSR_CROSS16B(r4,v4,v6,v8,v10) + VCMPEQUB_RC(v7,v9,v10) + vor v6,v8,v8 + bnl cr6,.Ldiffoffset_vmx_diff_found + + addi r3,r3,16 + addi r4,r4,16 + + bdnz .Ldiffoffset_vmx_32bytesloop + + EXIT_VMX_OPS + + cmpdi r5,0 + beq .Lzero + b .Lcmp_lt32bytes + +.Ldiffoffset_vmx_diff_found: + EXIT_VMX_OPS + /* anyway, the diff will appear in next 16 bytes */ + li r5,16 + b .Lcmp_lt32bytes + +#endif EXPORT_SYMBOL(memcmp) diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S index 8d8265be1a59..273ea67e60a1 100644 --- a/arch/powerpc/lib/memcpy_64.S +++ b/arch/powerpc/lib/memcpy_64.S @@ -9,6 +9,13 @@ #include <asm/processor.h> #include <asm/ppc_asm.h> #include <asm/export.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> + +#ifndef SELFTEST_CASE +/* For big-endian, 0 == most CPUs, 1 == POWER6, 2 == Cell */ +#define SELFTEST_CASE 0 +#endif .align 7 _GLOBAL_TOC(memcpy) @@ -20,10 +27,8 @@ BEGIN_FTR_SECTION #endif FTR_SECTION_ELSE #ifdef CONFIG_PPC_BOOK3S_64 -#ifndef SELFTEST b memcpy_power7 #endif -#endif ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) #ifdef __LITTLE_ENDIAN__ /* dumb little-endian memcpy that will get replaced at runtime */ @@ -47,6 +52,7 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) cleared. At the time of writing the only CPU that has this combination of bits set is Power6. */ +test_feature = (SELFTEST_CASE == 1) BEGIN_FTR_SECTION nop FTR_SECTION_ELSE @@ -55,6 +61,7 @@ ALT_FTR_SECTION_END(CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_CP_USE_DCBTZ, \ CPU_FTR_UNALIGNED_LD_STD) .Ldst_aligned: addi r3,r3,-16 +test_feature = (SELFTEST_CASE == 0) BEGIN_FTR_SECTION andi. r0,r4,7 bne .Lsrc_unaligned diff --git a/arch/powerpc/lib/memcpy_power7.S b/arch/powerpc/lib/memcpy_power7.S index df7de9d3da08..89bfefcf7fcc 100644 --- a/arch/powerpc/lib/memcpy_power7.S +++ b/arch/powerpc/lib/memcpy_power7.S @@ -19,7 +19,10 @@ */ #include <asm/ppc_asm.h> -_GLOBAL(memcpy_power7) +#ifndef SELFTEST_CASE +/* 0 == don't use VMX, 1 == use VMX */ +#define SELFTEST_CASE 0 +#endif #ifdef __BIG_ENDIAN__ #define LVS(VRT,RA,RB) lvsl VRT,RA,RB @@ -29,20 +32,17 @@ _GLOBAL(memcpy_power7) #define VPERM(VRT,VRA,VRB,VRC) vperm VRT,VRB,VRA,VRC #endif -#ifdef CONFIG_ALTIVEC +_GLOBAL(memcpy_power7) cmpldi r5,16 cmpldi cr1,r5,4096 - std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) - blt .Lshort_copy - bgt cr1,.Lvmx_copy -#else - cmpldi r5,16 - - std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) - blt .Lshort_copy +#ifdef CONFIG_ALTIVEC +test_feature = SELFTEST_CASE +BEGIN_FTR_SECTION + bgt cr1, .Lvmx_copy +END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) #endif .Lnonvmx_copy: @@ -223,14 +223,14 @@ _GLOBAL(memcpy_power7) addi r1,r1,STACKFRAMESIZE b .Lnonvmx_copy -#ifdef CONFIG_ALTIVEC .Lvmx_copy: +#ifdef CONFIG_ALTIVEC mflr r0 std r4,-STACKFRAMESIZE+STK_REG(R30)(r1) std r5,-STACKFRAMESIZE+STK_REG(R29)(r1) std r0,16(r1) stdu r1,-STACKFRAMESIZE(r1) - bl enter_vmx_copy + bl enter_vmx_ops cmpwi cr1,r3,0 ld r0,STACKFRAMESIZE+16(r1) ld r3,STK_REG(R31)(r1) @@ -445,7 +445,7 @@ _GLOBAL(memcpy_power7) 15: addi r1,r1,STACKFRAMESIZE ld r3,-STACKFRAMESIZE+STK_REG(R31)(r1) - b exit_vmx_copy /* tail call optimise */ + b exit_vmx_ops /* tail call optimise */ .Lvmx_unaligned_copy: /* Get the destination 16B aligned */ @@ -649,5 +649,5 @@ _GLOBAL(memcpy_power7) 15: addi r1,r1,STACKFRAMESIZE ld r3,-STACKFRAMESIZE+STK_REG(R31)(r1) - b exit_vmx_copy /* tail call optimise */ + b exit_vmx_ops /* tail call optimise */ #endif /* CONFIG_ALTIVEC */ diff --git a/arch/powerpc/lib/strlen_32.S b/arch/powerpc/lib/strlen_32.S new file mode 100644 index 000000000000..0a8d3f64d493 --- /dev/null +++ b/arch/powerpc/lib/strlen_32.S @@ -0,0 +1,78 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * strlen() for PPC32 + * + * Copyright (C) 2018 Christophe Leroy CS Systemes d'Information. + * + * Inspired from glibc implementation + */ +#include <asm/ppc_asm.h> +#include <asm/export.h> +#include <asm/cache.h> + + .text + +/* + * Algorithm: + * + * 1) Given a word 'x', we can test to see if it contains any 0 bytes + * by subtracting 0x01010101, and seeing if any of the high bits of each + * byte changed from 0 to 1. This works because the least significant + * 0 byte must have had no incoming carry (otherwise it's not the least + * significant), so it is 0x00 - 0x01 == 0xff. For all other + * byte values, either they have the high bit set initially, or when + * 1 is subtracted you get a value in the range 0x00-0x7f, none of which + * have their high bit set. The expression here is + * (x - 0x01010101) & ~x & 0x80808080), which gives 0x00000000 when + * there were no 0x00 bytes in the word. You get 0x80 in bytes that + * match, but possibly false 0x80 matches in the next more significant + * byte to a true match due to carries. For little-endian this is + * of no consequence since the least significant match is the one + * we're interested in, but big-endian needs method 2 to find which + * byte matches. + * 2) Given a word 'x', we can test to see _which_ byte was zero by + * calculating ~(((x & ~0x80808080) - 0x80808080 - 1) | x | ~0x80808080). + * This produces 0x80 in each byte that was zero, and 0x00 in all + * the other bytes. The '| ~0x80808080' clears the low 7 bits in each + * byte, and the '| x' part ensures that bytes with the high bit set + * produce 0x00. The addition will carry into the high bit of each byte + * iff that byte had one of its low 7 bits set. We can then just see + * which was the most significant bit set and divide by 8 to find how + * many to add to the index. + * This is from the book 'The PowerPC Compiler Writer's Guide', + * by Steve Hoxey, Faraydon Karim, Bill Hay and Hank Warren. + */ + +_GLOBAL(strlen) + andi. r0, r3, 3 + lis r7, 0x0101 + addi r10, r3, -4 + addic r7, r7, 0x0101 /* r7 = 0x01010101 (lomagic) & clear XER[CA] */ + rotlwi r6, r7, 31 /* r6 = 0x80808080 (himagic) */ + bne- 3f + .balign IFETCH_ALIGN_BYTES +1: lwzu r9, 4(r10) +2: subf r8, r7, r9 + and. r8, r8, r6 + beq+ 1b + andc. r8, r8, r9 + beq+ 1b + andc r8, r9, r6 + orc r9, r9, r6 + subfe r8, r6, r8 + nor r8, r8, r9 + cntlzw r8, r8 + subf r3, r3, r10 + srwi r8, r8, 3 + add r3, r3, r8 + blr + + /* Missaligned string: make sure bytes before string are seen not 0 */ +3: xor r10, r10, r0 + orc r8, r8, r8 + lwzu r9, 4(r10) + slwi r0, r0, 3 + srw r8, r8, r0 + orc r9, r9, r8 + b 2b +EXPORT_SYMBOL(strlen) diff --git a/arch/powerpc/lib/vmx-helper.c b/arch/powerpc/lib/vmx-helper.c index bf925cdcaca9..9f340494a8ac 100644 --- a/arch/powerpc/lib/vmx-helper.c +++ b/arch/powerpc/lib/vmx-helper.c @@ -53,7 +53,7 @@ int exit_vmx_usercopy(void) return 0; } -int enter_vmx_copy(void) +int enter_vmx_ops(void) { if (in_interrupt()) return 0; @@ -70,7 +70,7 @@ int enter_vmx_copy(void) * passed a pointer to the destination which we return as required by a * memcpy implementation. */ -void *exit_vmx_copy(void *dest) +void *exit_vmx_ops(void *dest) { disable_kernel_altivec(); preempt_enable(); diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c index 82b1ff759e26..12d92518e898 100644 --- a/arch/powerpc/mm/44x_mmu.c +++ b/arch/powerpc/mm/44x_mmu.c @@ -229,7 +229,7 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base, } #ifdef CONFIG_SMP -void mmu_init_secondary(int cpu) +void __init mmu_init_secondary(int cpu) { unsigned long addr; unsigned long memstart = memstart_addr & ~(PPC_PIN_SIZE - 1); diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index f06f3577d8d1..cdf6a9960046 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -19,7 +19,7 @@ obj-$(CONFIG_PPC_BOOK3S_64) += pgtable-hash64.o hash_utils_64.o slb_low.o slb.o obj-$(CONFIG_PPC_RADIX_MMU) += pgtable-radix.o tlb-radix.o obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o hash_low_32.o mmu_context_hash32.o obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(BITS).o -ifeq ($(CONFIG_PPC_BOOK3S_64),y) +ifdef CONFIG_PPC_BOOK3S_64 obj-$(CONFIG_PPC_4K_PAGES) += hash64_4k.o obj-$(CONFIG_PPC_64K_PAGES) += hash64_64k.o endif @@ -31,7 +31,7 @@ obj-$(CONFIG_NEED_MULTIPLE_NODES) += numa.o obj-$(CONFIG_PPC_SPLPAR) += vphn.o obj-$(CONFIG_PPC_MM_SLICES) += slice.o obj-y += hugetlbpage.o -ifeq ($(CONFIG_HUGETLB_PAGE),y) +ifdef CONFIG_HUGETLB_PAGE obj-$(CONFIG_PPC_BOOK3S_64) += hugetlbpage-hash64.o obj-$(CONFIG_PPC_RADIX_MMU) += hugetlbpage-radix.o obj-$(CONFIG_PPC_BOOK3E_MMU) += hugetlbpage-book3e.o diff --git a/arch/powerpc/mm/dump_hashpagetable.c b/arch/powerpc/mm/dump_hashpagetable.c index 14cfb11b09d0..869294695048 100644 --- a/arch/powerpc/mm/dump_hashpagetable.c +++ b/arch/powerpc/mm/dump_hashpagetable.c @@ -19,7 +19,6 @@ #include <linux/mm.h> #include <linux/sched.h> #include <linux/seq_file.h> -#include <asm/fixmap.h> #include <asm/pgtable.h> #include <linux/const.h> #include <asm/page.h> @@ -260,7 +259,7 @@ static int pseries_find(unsigned long ea, int psize, bool primary, u64 *v, u64 * /* to check in the secondary hash table, we invert the hash */ if (!primary) hash = ~hash; - hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; /* see if we can find an entry in the hpte with this hash */ for (i = 0; i < HPTES_PER_GROUP; i += 4, hpte_group += 4) { lpar_rc = plpar_pte_read_4(0, hpte_group, (void *)ptes); diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 7c061313cc6f..d51cf5f4e45e 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -42,7 +42,6 @@ #include <asm/pgtable.h> #include <asm/mmu.h> #include <asm/mmu_context.h> -#include <asm/tlbflush.h> #include <asm/siginfo.h> #include <asm/debug.h> diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c index d573d7d07f25..6fa6765a10eb 100644 --- a/arch/powerpc/mm/hash64_4k.c +++ b/arch/powerpc/mm/hash64_4k.c @@ -80,7 +80,7 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, hash = hpt_hash(vpn, shift, ssize); repeat: - hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; /* Insert into the hash table, primary slot */ slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, 0, @@ -89,7 +89,7 @@ repeat: * Primary is full, try the secondary */ if (unlikely(slot == -1)) { - hpte_group = ((~hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (~hash & htab_hash_mask) * HPTES_PER_GROUP; slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, HPTE_V_SECONDARY, @@ -97,8 +97,8 @@ repeat: MMU_PAGE_4K, ssize); if (slot == -1) { if (mftb() & 0x1) - hpte_group = ((hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * + HPTES_PER_GROUP; mmu_hash_ops.hpte_remove(hpte_group); /* * FIXME!! Should be try the group from which we removed ? diff --git a/arch/powerpc/mm/hash64_64k.c b/arch/powerpc/mm/hash64_64k.c index e601d95c3b20..3afa253d7f52 100644 --- a/arch/powerpc/mm/hash64_64k.c +++ b/arch/powerpc/mm/hash64_64k.c @@ -154,7 +154,7 @@ htab_insert_hpte: } hash = hpt_hash(vpn, shift, ssize); repeat: - hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; /* Insert into the hash table, primary slot */ slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, 0, @@ -165,7 +165,7 @@ repeat: if (unlikely(slot == -1)) { bool soft_invalid; - hpte_group = ((~hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (~hash & htab_hash_mask) * HPTES_PER_GROUP; slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, HPTE_V_SECONDARY, MMU_PAGE_4K, MMU_PAGE_4K, @@ -193,8 +193,7 @@ repeat: * that we do not get the same soft-invalid slot. */ if (soft_invalid || (mftb() & 0x1)) - hpte_group = ((hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; mmu_hash_ops.hpte_remove(hpte_group); /* @@ -288,7 +287,7 @@ int __hash_page_64K(unsigned long ea, unsigned long access, hash = hpt_hash(vpn, shift, ssize); repeat: - hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; /* Insert into the hash table, primary slot */ slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, 0, @@ -298,7 +297,7 @@ repeat: * Primary is full, try the secondary */ if (unlikely(slot == -1)) { - hpte_group = ((~hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (~hash & htab_hash_mask) * HPTES_PER_GROUP; slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, HPTE_V_SECONDARY, @@ -306,8 +305,8 @@ repeat: MMU_PAGE_64K, ssize); if (slot == -1) { if (mftb() & 0x1) - hpte_group = ((hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * + HPTES_PER_GROUP; mmu_hash_ops.hpte_remove(hpte_group); /* * FIXME!! Should be try the group from which we removed ? diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S index ffbd7c0bda96..26acf6c8c20c 100644 --- a/arch/powerpc/mm/hash_low_32.S +++ b/arch/powerpc/mm/hash_low_32.S @@ -27,6 +27,7 @@ #include <asm/thread_info.h> #include <asm/asm-offsets.h> #include <asm/export.h> +#include <asm/feature-fixups.h> #ifdef CONFIG_SMP .section .bss diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index 1d049c78c82a..729f02df8290 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -23,13 +23,13 @@ #include <asm/mmu.h> #include <asm/mmu_context.h> #include <asm/pgtable.h> -#include <asm/tlbflush.h> #include <asm/trace.h> #include <asm/tlb.h> #include <asm/cputable.h> #include <asm/udbg.h> #include <asm/kexec.h> #include <asm/ppc-opcode.h> +#include <asm/feature-fixups.h> #include <misc/cxl-base.h> @@ -423,9 +423,7 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp, DBG_LOW(" update(vpn=%016lx, avpnv=%016lx, group=%lx, newpp=%lx)", vpn, want_v & HPTE_V_AVPN, slot, newpp); - hpte_v = be64_to_cpu(hptep->v); - if (cpu_has_feature(CPU_FTR_ARCH_300)) - hpte_v = hpte_new_to_old_v(hpte_v, be64_to_cpu(hptep->r)); + hpte_v = hpte_get_old_v(hptep); /* * We need to invalidate the TLB always because hpte_remove doesn't do * a tlb invalidate. If a hash bucket gets full, we "evict" a more/less @@ -439,9 +437,7 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp, } else { native_lock_hpte(hptep); /* recheck with locks held */ - hpte_v = be64_to_cpu(hptep->v); - if (cpu_has_feature(CPU_FTR_ARCH_300)) - hpte_v = hpte_new_to_old_v(hpte_v, be64_to_cpu(hptep->r)); + hpte_v = hpte_get_old_v(hptep); if (unlikely(!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID))) { ret = -1; @@ -481,11 +477,9 @@ static long native_hpte_find(unsigned long vpn, int psize, int ssize) /* Bolted mappings are only ever in the primary group */ slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; for (i = 0; i < HPTES_PER_GROUP; i++) { - hptep = htab_address + slot; - hpte_v = be64_to_cpu(hptep->v); - if (cpu_has_feature(CPU_FTR_ARCH_300)) - hpte_v = hpte_new_to_old_v(hpte_v, be64_to_cpu(hptep->r)); + hptep = htab_address + slot; + hpte_v = hpte_get_old_v(hptep); if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) /* HPTE matches */ return slot; @@ -574,11 +568,19 @@ static void native_hpte_invalidate(unsigned long slot, unsigned long vpn, DBG_LOW(" invalidate(vpn=%016lx, hash: %lx)\n", vpn, slot); want_v = hpte_encode_avpn(vpn, bpsize, ssize); - native_lock_hpte(hptep); - hpte_v = be64_to_cpu(hptep->v); - if (cpu_has_feature(CPU_FTR_ARCH_300)) - hpte_v = hpte_new_to_old_v(hpte_v, be64_to_cpu(hptep->r)); + hpte_v = hpte_get_old_v(hptep); + if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) { + native_lock_hpte(hptep); + /* recheck with locks held */ + hpte_v = hpte_get_old_v(hptep); + + if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) + /* Invalidate the hpte. NOTE: this also unlocks it */ + hptep->v = 0; + else + native_unlock_hpte(hptep); + } /* * We need to invalidate the TLB always because hpte_remove doesn't do * a tlb invalidate. If a hash bucket gets full, we "evict" a more/less @@ -586,13 +588,6 @@ static void native_hpte_invalidate(unsigned long slot, unsigned long vpn, * (hpte_remove) because we assume the old translation is still * technically "valid". */ - if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) - native_unlock_hpte(hptep); - else - /* Invalidate the hpte. NOTE: this also unlocks it */ - hptep->v = 0; - - /* Invalidate the TLB */ tlbie(vpn, bpsize, apsize, ssize, local); local_irq_restore(flags); @@ -634,17 +629,23 @@ static void native_hugepage_invalidate(unsigned long vsid, hptep = htab_address + slot; want_v = hpte_encode_avpn(vpn, psize, ssize); - native_lock_hpte(hptep); - hpte_v = be64_to_cpu(hptep->v); - if (cpu_has_feature(CPU_FTR_ARCH_300)) - hpte_v = hpte_new_to_old_v(hpte_v, be64_to_cpu(hptep->r)); + hpte_v = hpte_get_old_v(hptep); /* Even if we miss, we need to invalidate the TLB */ - if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) - native_unlock_hpte(hptep); - else - /* Invalidate the hpte. NOTE: this also unlocks it */ - hptep->v = 0; + if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) { + /* recheck with locks held */ + native_lock_hpte(hptep); + hpte_v = hpte_get_old_v(hptep); + + if (HPTE_V_COMPARE(hpte_v, want_v) && (hpte_v & HPTE_V_VALID)) { + /* + * Invalidate the hpte. NOTE: this also unlocks it + */ + + hptep->v = 0; + } else + native_unlock_hpte(hptep); + } /* * We need to do tlb invalidate for all the address, tlbie * instruction compares entry_VA in tlb with the VA specified @@ -812,16 +813,19 @@ static void native_flush_hash_range(unsigned long number, int local) slot += hidx & _PTEIDX_GROUP_IX; hptep = htab_address + slot; want_v = hpte_encode_avpn(vpn, psize, ssize); + hpte_v = hpte_get_old_v(hptep); + + if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) + continue; + /* lock and try again */ native_lock_hpte(hptep); - hpte_v = be64_to_cpu(hptep->v); - if (cpu_has_feature(CPU_FTR_ARCH_300)) - hpte_v = hpte_new_to_old_v(hpte_v, - be64_to_cpu(hptep->r)); - if (!HPTE_V_COMPARE(hpte_v, want_v) || - !(hpte_v & HPTE_V_VALID)) + hpte_v = hpte_get_old_v(hptep); + + if (!HPTE_V_COMPARE(hpte_v, want_v) || !(hpte_v & HPTE_V_VALID)) native_unlock_hpte(hptep); else hptep->v = 0; + } pte_iterate_hashed_end(); } diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 8318716e5075..f23a89d8e4ce 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -48,7 +48,6 @@ #include <linux/uaccess.h> #include <asm/machdep.h> #include <asm/prom.h> -#include <asm/tlbflush.h> #include <asm/io.h> #include <asm/eeh.h> #include <asm/tlb.h> @@ -808,31 +807,6 @@ int hash__remove_section_mapping(unsigned long start, unsigned long end) } #endif /* CONFIG_MEMORY_HOTPLUG */ -static void update_hid_for_hash(void) -{ - unsigned long hid0; - unsigned long rb = 3UL << PPC_BITLSHIFT(53); /* IS = 3 */ - - asm volatile("ptesync": : :"memory"); - /* prs = 0, ric = 2, rs = 0, r = 1 is = 3 */ - asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1) - : : "r"(rb), "i"(0), "i"(0), "i"(2), "r"(0) : "memory"); - asm volatile("eieio; tlbsync; ptesync; isync; slbia": : :"memory"); - trace_tlbie(0, 0, rb, 0, 2, 0, 0); - - /* - * now switch the HID - */ - hid0 = mfspr(SPRN_HID0); - hid0 &= ~HID0_POWER9_RADIX; - mtspr(SPRN_HID0, hid0); - asm volatile("isync": : :"memory"); - - /* Wait for it to happen */ - while ((mfspr(SPRN_HID0) & HID0_POWER9_RADIX)) - cpu_relax(); -} - static void __init hash_init_partition_table(phys_addr_t hash_table, unsigned long htab_size) { @@ -845,8 +819,6 @@ static void __init hash_init_partition_table(phys_addr_t hash_table, htab_size = __ilog2(htab_size) - 18; mmu_partition_table_set_entry(0, hash_table | htab_size, 0); pr_info("Partition table %p\n", partition_tb); - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - update_hid_for_hash(); } static void __init htab_initialize(void) @@ -1077,9 +1049,6 @@ void hash__early_init_mmu_secondary(void) /* Initialize hash table for that CPU */ if (!firmware_has_feature(FW_FEATURE_LPAR)) { - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - update_hid_for_hash(); - if (!cpu_has_feature(CPU_FTR_ARCH_300)) mtspr(SPRN_SDR1, _SDR1); else @@ -1783,8 +1752,7 @@ long hpte_insert_repeating(unsigned long hash, unsigned long vpn, long slot; repeat: - hpte_group = ((hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; /* Insert into the hash table, primary slot */ slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, vflags, @@ -1792,15 +1760,14 @@ repeat: /* Primary is full, try the secondary */ if (unlikely(slot == -1)) { - hpte_group = ((~hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (~hash & htab_hash_mask) * HPTES_PER_GROUP; slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, vflags | HPTE_V_SECONDARY, psize, psize, ssize); if (slot == -1) { if (mftb() & 0x1) - hpte_group = ((hash & htab_hash_mask) * - HPTES_PER_GROUP)&~0x7UL; + hpte_group = (hash & htab_hash_mask) * + HPTES_PER_GROUP; mmu_hash_ops.hpte_remove(hpte_group); goto repeat; diff --git a/arch/powerpc/mm/highmem.c b/arch/powerpc/mm/highmem.c index 668e87d03f9e..82a0e37557a5 100644 --- a/arch/powerpc/mm/highmem.c +++ b/arch/powerpc/mm/highmem.c @@ -56,7 +56,7 @@ EXPORT_SYMBOL(kmap_atomic_prot); void __kunmap_atomic(void *kvaddr) { unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; - int type; + int type __maybe_unused; if (vaddr < __fix_to_virt(FIX_KMAP_END)) { pagefault_enable(); diff --git a/arch/powerpc/mm/hugepage-hash64.c b/arch/powerpc/mm/hugepage-hash64.c index f20d16f849c5..01f213d2bcb9 100644 --- a/arch/powerpc/mm/hugepage-hash64.c +++ b/arch/powerpc/mm/hugepage-hash64.c @@ -128,7 +128,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, new_pmd |= H_PAGE_HASHPTE; repeat: - hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP; /* Insert into the hash table, primary slot */ slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, 0, @@ -137,16 +137,15 @@ repeat: * Primary is full, try the secondary */ if (unlikely(slot == -1)) { - hpte_group = ((~hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (~hash & htab_hash_mask) * HPTES_PER_GROUP; slot = mmu_hash_ops.hpte_insert(hpte_group, vpn, pa, rflags, HPTE_V_SECONDARY, psize, lpsize, ssize); if (slot == -1) { if (mftb() & 0x1) - hpte_group = ((hash & htab_hash_mask) * - HPTES_PER_GROUP) & ~0x7UL; + hpte_group = (hash & htab_hash_mask) * + HPTES_PER_GROUP; mmu_hash_ops.hpte_remove(hpte_group); goto repeat; diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 8a9a49c13865..e87f9ef9115b 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -118,15 +118,6 @@ static int __hugepte_alloc(struct mm_struct *mm, hugepd_t *hpdp, } /* - * These macros define how to determine which level of the page table holds - * the hpdp. - */ -#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_8xx) -#define HUGEPD_PGD_SHIFT PGDIR_SHIFT -#define HUGEPD_PUD_SHIFT PUD_SHIFT -#endif - -/* * At this point we do the placement change only for BOOK3S 64. This would * possibly work on other subarchs. */ @@ -174,13 +165,13 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr, unsigned long sz } } #else - if (pshift >= HUGEPD_PGD_SHIFT) { + if (pshift >= PGDIR_SHIFT) { ptl = &mm->page_table_lock; hpdp = (hugepd_t *)pg; } else { pdshift = PUD_SHIFT; pu = pud_alloc(mm, pg, addr); - if (pshift >= HUGEPD_PUD_SHIFT) { + if (pshift >= PUD_SHIFT) { ptl = pud_lockptr(mm, pu); hpdp = (hugepd_t *)pu; } else { @@ -621,15 +612,12 @@ static int __init add_huge_page_size(unsigned long long size) * firmware we only add hugetlb support for page sizes that can be * supported by linux page table layout. * For now we have - * Radix: 2M + * Radix: 2M and 1G * Hash: 16M and 16G */ if (radix_enabled()) { - if (mmu_psize != MMU_PAGE_2M) { - if (cpu_has_feature(CPU_FTR_POWER9_DD1) || - (mmu_psize != MMU_PAGE_1G)) - return -EINVAL; - } + if (mmu_psize != MMU_PAGE_2M && mmu_psize != MMU_PAGE_1G) + return -EINVAL; } else { if (mmu_psize != MMU_PAGE_16M && mmu_psize != MMU_PAGE_16G) return -EINVAL; @@ -695,9 +683,9 @@ static int __init hugetlbpage_init(void) else pdshift = PMD_SHIFT; #else - if (shift < HUGEPD_PUD_SHIFT) + if (shift < PUD_SHIFT) pdshift = PMD_SHIFT; - else if (shift < HUGEPD_PGD_SHIFT) + else if (shift < PGDIR_SHIFT) pdshift = PUD_SHIFT; else pdshift = PGDIR_SHIFT; diff --git a/arch/powerpc/mm/mmu_context_book3s64.c b/arch/powerpc/mm/mmu_context_book3s64.c index f3d4b4a0e561..4a892d894a0f 100644 --- a/arch/powerpc/mm/mmu_context_book3s64.c +++ b/arch/powerpc/mm/mmu_context_book3s64.c @@ -200,9 +200,9 @@ static void pte_frag_destroy(void *pte_frag) /* drop all the pending references */ count = ((unsigned long)pte_frag & ~PAGE_MASK) >> PTE_FRAG_SIZE_SHIFT; /* We allow PTE_FRAG_NR fragments from a PTE page */ - if (page_ref_sub_and_test(page, PTE_FRAG_NR - count)) { + if (atomic_sub_and_test(PTE_FRAG_NR - count, &page->pt_frag_refcount)) { pgtable_page_dtor(page); - free_unref_page(page); + __free_page(page); } } @@ -215,13 +215,13 @@ static void pmd_frag_destroy(void *pmd_frag) /* drop all the pending references */ count = ((unsigned long)pmd_frag & ~PAGE_MASK) >> PMD_FRAG_SIZE_SHIFT; /* We allow PTE_FRAG_NR fragments from a PTE page */ - if (page_ref_sub_and_test(page, PMD_FRAG_NR - count)) { + if (atomic_sub_and_test(PMD_FRAG_NR - count, &page->pt_frag_refcount)) { pgtable_pmd_page_dtor(page); - free_unref_page(page); + __free_page(page); } } -static void destroy_pagetable_page(struct mm_struct *mm) +static void destroy_pagetable_cache(struct mm_struct *mm) { void *frag; @@ -244,13 +244,14 @@ void destroy_context(struct mm_struct *mm) WARN_ON(process_tb[mm->context.id].prtb0 != 0); else subpage_prot_free(mm); - destroy_pagetable_page(mm); destroy_contexts(&mm->context); mm->context.id = MMU_NO_CONTEXT; } void arch_exit_mmap(struct mm_struct *mm) { + destroy_pagetable_cache(mm); + if (radix_enabled()) { /* * Radix doesn't have a valid bit in the process table @@ -273,15 +274,7 @@ void arch_exit_mmap(struct mm_struct *mm) #ifdef CONFIG_PPC_RADIX_MMU void radix__switch_mmu_context(struct mm_struct *prev, struct mm_struct *next) { - - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - isync(); - mtspr(SPRN_PID, next->context.id); - isync(); - asm volatile(PPC_INVALIDATE_ERAT : : :"memory"); - } else { - mtspr(SPRN_PID, next->context.id); - isync(); - } + mtspr(SPRN_PID, next->context.id); + isync(); } #endif diff --git a/arch/powerpc/mm/mmu_context_hash32.c b/arch/powerpc/mm/mmu_context_hash32.c index aa5a7fd89461..921c1e33e941 100644 --- a/arch/powerpc/mm/mmu_context_hash32.c +++ b/arch/powerpc/mm/mmu_context_hash32.c @@ -27,7 +27,6 @@ #include <linux/export.h> #include <asm/mmu_context.h> -#include <asm/tlbflush.h> /* * On 32-bit PowerPC 6xx/7xx/7xxx CPUs, we use a set of 16 VSIDs diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index c4c0a09a7775..e5d779eed181 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -19,7 +19,6 @@ * */ #include <linux/mm.h> -#include <asm/tlbflush.h> #include <asm/mmu.h> #ifdef CONFIG_PPC_MMU_NOHASH diff --git a/arch/powerpc/mm/pgtable-book3s64.c b/arch/powerpc/mm/pgtable-book3s64.c index 4afbfbb64bfd..01d7c0f7c4f0 100644 --- a/arch/powerpc/mm/pgtable-book3s64.c +++ b/arch/powerpc/mm/pgtable-book3s64.c @@ -270,6 +270,8 @@ static pmd_t *__alloc_for_pmdcache(struct mm_struct *mm) return NULL; } + atomic_set(&page->pt_frag_refcount, 1); + ret = page_address(page); /* * if we support only one fragment just return the @@ -285,7 +287,7 @@ static pmd_t *__alloc_for_pmdcache(struct mm_struct *mm) * count. */ if (likely(!mm->context.pmd_frag)) { - set_page_count(page, PMD_FRAG_NR); + atomic_set(&page->pt_frag_refcount, PMD_FRAG_NR); mm->context.pmd_frag = ret + PMD_FRAG_SIZE; } spin_unlock(&mm->page_table_lock); @@ -308,9 +310,10 @@ void pmd_fragment_free(unsigned long *pmd) { struct page *page = virt_to_page(pmd); - if (put_page_testzero(page)) { + BUG_ON(atomic_read(&page->pt_frag_refcount) <= 0); + if (atomic_dec_and_test(&page->pt_frag_refcount)) { pgtable_pmd_page_dtor(page); - free_unref_page(page); + __free_page(page); } } @@ -352,6 +355,7 @@ static pte_t *__alloc_for_ptecache(struct mm_struct *mm, int kernel) return NULL; } + atomic_set(&page->pt_frag_refcount, 1); ret = page_address(page); /* @@ -367,7 +371,7 @@ static pte_t *__alloc_for_ptecache(struct mm_struct *mm, int kernel) * count. */ if (likely(!mm->context.pte_frag)) { - set_page_count(page, PTE_FRAG_NR); + atomic_set(&page->pt_frag_refcount, PTE_FRAG_NR); mm->context.pte_frag = ret + PTE_FRAG_SIZE; } spin_unlock(&mm->page_table_lock); @@ -390,10 +394,11 @@ void pte_fragment_free(unsigned long *table, int kernel) { struct page *page = virt_to_page(table); - if (put_page_testzero(page)) { + BUG_ON(atomic_read(&page->pt_frag_refcount) <= 0); + if (atomic_dec_and_test(&page->pt_frag_refcount)) { if (!kernel) pgtable_page_dtor(page); - free_unref_page(page); + __free_page(page); } } @@ -450,3 +455,25 @@ void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int index) return pgtable_free(table, index); } #endif + +#ifdef CONFIG_PROC_FS +atomic_long_t direct_pages_count[MMU_PAGE_COUNT]; + +void arch_report_meminfo(struct seq_file *m) +{ + /* + * Hash maps the memory with one size mmu_linear_psize. + * So don't bother to print these on hash + */ + if (!radix_enabled()) + return; + seq_printf(m, "DirectMap4k: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_4K]) << 2); + seq_printf(m, "DirectMap64k: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_64K]) << 6); + seq_printf(m, "DirectMap2M: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_2M]) << 11); + seq_printf(m, "DirectMap1G: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_1G]) << 20); +} +#endif /* CONFIG_PROC_FS */ diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 96f68c5aa1f5..7be99fd9af15 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -226,16 +226,6 @@ void radix__mark_rodata_ro(void) { unsigned long start, end; - /* - * mark_rodata_ro() will mark itself as !writable at some point. - * Due to DD1 workaround in radix__pte_update(), we'll end up with - * an invalid pte and the system will crash quite severly. - */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - pr_warn("Warning: Unable to mark rodata read only on P9 DD1\n"); - return; - } - start = (unsigned long)_stext; end = (unsigned long)__init_begin; @@ -277,6 +267,7 @@ static int __meminit create_physical_mapping(unsigned long start, #else int split_text_mapping = 0; #endif + int psize; start = _ALIGN_UP(start, PAGE_SIZE); for (addr = start; addr < end; addr += mapping_size) { @@ -290,13 +281,17 @@ static int __meminit create_physical_mapping(unsigned long start, retry: if (IS_ALIGNED(addr, PUD_SIZE) && gap >= PUD_SIZE && mmu_psize_defs[MMU_PAGE_1G].shift && - PUD_SIZE <= max_mapping_size) + PUD_SIZE <= max_mapping_size) { mapping_size = PUD_SIZE; - else if (IS_ALIGNED(addr, PMD_SIZE) && gap >= PMD_SIZE && - mmu_psize_defs[MMU_PAGE_2M].shift) + psize = MMU_PAGE_1G; + } else if (IS_ALIGNED(addr, PMD_SIZE) && gap >= PMD_SIZE && + mmu_psize_defs[MMU_PAGE_2M].shift) { mapping_size = PMD_SIZE; - else + psize = MMU_PAGE_2M; + } else { mapping_size = PAGE_SIZE; + psize = mmu_virtual_psize; + } if (split_text_mapping && (mapping_size == PUD_SIZE) && (addr <= __pa_symbol(__init_begin)) && @@ -307,8 +302,10 @@ retry: if (split_text_mapping && (mapping_size == PMD_SIZE) && (addr <= __pa_symbol(__init_begin)) && - (addr + mapping_size) >= __pa_symbol(_stext)) + (addr + mapping_size) >= __pa_symbol(_stext)) { mapping_size = PAGE_SIZE; + psize = mmu_virtual_psize; + } if (mapping_size != previous_size) { print_mapping(start, addr, previous_size); @@ -326,6 +323,8 @@ retry: rc = __map_kernel_page(vaddr, addr, prot, mapping_size, nid, start, end); if (rc) return rc; + + update_page_count(psize, 1); } print_mapping(start, addr, mapping_size); @@ -533,35 +532,6 @@ found: return; } -static void update_hid_for_radix(void) -{ - unsigned long hid0; - unsigned long rb = 3UL << PPC_BITLSHIFT(53); /* IS = 3 */ - - asm volatile("ptesync": : :"memory"); - /* prs = 0, ric = 2, rs = 0, r = 1 is = 3 */ - asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1) - : : "r"(rb), "i"(1), "i"(0), "i"(2), "r"(0) : "memory"); - /* prs = 1, ric = 2, rs = 0, r = 1 is = 3 */ - asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1) - : : "r"(rb), "i"(1), "i"(1), "i"(2), "r"(0) : "memory"); - asm volatile("eieio; tlbsync; ptesync; isync; slbia": : :"memory"); - trace_tlbie(0, 0, rb, 0, 2, 0, 1); - trace_tlbie(0, 0, rb, 0, 2, 1, 1); - - /* - * now switch the HID - */ - hid0 = mfspr(SPRN_HID0); - hid0 |= HID0_POWER9_RADIX; - mtspr(SPRN_HID0, hid0); - asm volatile("isync": : :"memory"); - - /* Wait for it to happen */ - while (!(mfspr(SPRN_HID0) & HID0_POWER9_RADIX)) - cpu_relax(); -} - static void radix_init_amor(void) { /* @@ -576,22 +546,12 @@ static void radix_init_amor(void) static void radix_init_iamr(void) { - unsigned long iamr; - - /* - * The IAMR should set to 0 on DD1. - */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - iamr = 0; - else - iamr = (1ul << 62); - /* * Radix always uses key0 of the IAMR to determine if an access is * allowed. We set bit 0 (IBM bit 1) of key0, to prevent instruction * fetch. */ - mtspr(SPRN_IAMR, iamr); + mtspr(SPRN_IAMR, (1ul << 62)); } void __init radix__early_init_mmu(void) @@ -644,8 +604,6 @@ void __init radix__early_init_mmu(void) if (!firmware_has_feature(FW_FEATURE_LPAR)) { radix_init_native(); - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - update_hid_for_radix(); lpcr = mfspr(SPRN_LPCR); mtspr(SPRN_LPCR, lpcr | LPCR_UPRT | LPCR_HR); radix_init_partition_table(); @@ -671,10 +629,6 @@ void radix__early_init_mmu_secondary(void) * update partition table control register and UPRT */ if (!firmware_has_feature(FW_FEATURE_LPAR)) { - - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - update_hid_for_radix(); - lpcr = mfspr(SPRN_LPCR); mtspr(SPRN_LPCR, lpcr | LPCR_UPRT | LPCR_HR); @@ -1095,8 +1049,7 @@ void radix__ptep_set_access_flags(struct vm_area_struct *vma, pte_t *ptep, * To avoid NMMU hang while relaxing access, we need mark * the pte invalid in between. */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1) || - atomic_read(&mm->context.copros) > 0) { + if (atomic_read(&mm->context.copros) > 0) { unsigned long old_pte, new_pte; old_pte = __radix_pte_update(ptep, ~0, 0); diff --git a/arch/powerpc/mm/pkeys.c b/arch/powerpc/mm/pkeys.c index e6f500fabf5e..333b1f80c435 100644 --- a/arch/powerpc/mm/pkeys.c +++ b/arch/powerpc/mm/pkeys.c @@ -14,9 +14,12 @@ DEFINE_STATIC_KEY_TRUE(pkey_disabled); bool pkey_execute_disable_supported; int pkeys_total; /* Total pkeys as per device tree */ bool pkeys_devtree_defined; /* pkey property exported by device tree */ -u32 initial_allocation_mask; /* Bits set for reserved keys */ -u64 pkey_amr_uamor_mask; /* Bits in AMR/UMOR not to be touched */ +u32 initial_allocation_mask; /* Bits set for the initially allocated keys */ +u32 reserved_allocation_mask; /* Bits set for reserved keys */ +u64 pkey_amr_mask; /* Bits in AMR not to be touched */ u64 pkey_iamr_mask; /* Bits in AMR not to be touched */ +u64 pkey_uamor_mask; /* Bits in UMOR not to be touched */ +int execute_only_key = 2; #define AMR_BITS_PER_PKEY 2 #define AMR_RD_BIT 0x1UL @@ -91,7 +94,7 @@ int pkey_initialize(void) * arch-neutral code. */ pkeys_total = min_t(int, pkeys_total, - (ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)); + ((ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)+1)); if (!pkey_mmu_enabled() || radix_enabled() || !pkeys_total) static_branch_enable(&pkey_disabled); @@ -119,20 +122,39 @@ int pkey_initialize(void) #else os_reserved = 0; #endif - initial_allocation_mask = ~0x0; - pkey_amr_uamor_mask = ~0x0ul; + /* Bits are in LE format. */ + reserved_allocation_mask = (0x1 << 1) | (0x1 << execute_only_key); + + /* register mask is in BE format */ + pkey_amr_mask = ~0x0ul; + pkey_amr_mask &= ~(0x3ul << pkeyshift(0)); + pkey_iamr_mask = ~0x0ul; - /* - * key 0, 1 are reserved. - * key 0 is the default key, which allows read/write/execute. - * key 1 is recommended not to be used. PowerISA(3.0) page 1015, - * programming note. - */ - for (i = 2; i < (pkeys_total - os_reserved); i++) { - initial_allocation_mask &= ~(0x1 << i); - pkey_amr_uamor_mask &= ~(0x3ul << pkeyshift(i)); - pkey_iamr_mask &= ~(0x1ul << pkeyshift(i)); + pkey_iamr_mask &= ~(0x3ul << pkeyshift(0)); + pkey_iamr_mask &= ~(0x3ul << pkeyshift(execute_only_key)); + + pkey_uamor_mask = ~0x0ul; + pkey_uamor_mask &= ~(0x3ul << pkeyshift(0)); + pkey_uamor_mask &= ~(0x3ul << pkeyshift(execute_only_key)); + + /* mark the rest of the keys as reserved and hence unavailable */ + for (i = (pkeys_total - os_reserved); i < pkeys_total; i++) { + reserved_allocation_mask |= (0x1 << i); + pkey_uamor_mask &= ~(0x3ul << pkeyshift(i)); + } + initial_allocation_mask = reserved_allocation_mask | (0x1 << 0); + + if (unlikely((pkeys_total - os_reserved) <= execute_only_key)) { + /* + * Insufficient number of keys to support + * execute only key. Mark it unavailable. + * Any AMR, UAMOR, IAMR bit set for + * this key is irrelevant since this key + * can never be allocated. + */ + execute_only_key = -1; } + return 0; } @@ -143,8 +165,7 @@ void pkey_mm_init(struct mm_struct *mm) if (static_branch_likely(&pkey_disabled)) return; mm_pkey_allocation_map(mm) = initial_allocation_mask; - /* -1 means unallocated or invalid */ - mm->context.execute_only_pkey = -1; + mm->context.execute_only_pkey = execute_only_key; } static inline u64 read_amr(void) @@ -213,33 +234,6 @@ static inline void init_iamr(int pkey, u8 init_bits) write_iamr(old_iamr | new_iamr_bits); } -static void pkey_status_change(int pkey, bool enable) -{ - u64 old_uamor; - - /* Reset the AMR and IAMR bits for this key */ - init_amr(pkey, 0x0); - init_iamr(pkey, 0x0); - - /* Enable/disable key */ - old_uamor = read_uamor(); - if (enable) - old_uamor |= (0x3ul << pkeyshift(pkey)); - else - old_uamor &= ~(0x3ul << pkeyshift(pkey)); - write_uamor(old_uamor); -} - -void __arch_activate_pkey(int pkey) -{ - pkey_status_change(pkey, true); -} - -void __arch_deactivate_pkey(int pkey) -{ - pkey_status_change(pkey, false); -} - /* * Set the access rights in AMR IAMR and UAMOR registers for @pkey to that * specified in @init_val. @@ -289,9 +283,6 @@ void thread_pkey_regs_restore(struct thread_struct *new_thread, if (static_branch_likely(&pkey_disabled)) return; - /* - * TODO: Just set UAMOR to zero if @new_thread hasn't used any keys yet. - */ if (old_thread->amr != new_thread->amr) write_amr(new_thread->amr); if (old_thread->iamr != new_thread->iamr) @@ -305,9 +296,13 @@ void thread_pkey_regs_init(struct thread_struct *thread) if (static_branch_likely(&pkey_disabled)) return; - thread->amr = read_amr() & pkey_amr_uamor_mask; - thread->iamr = read_iamr() & pkey_iamr_mask; - thread->uamor = read_uamor() & pkey_amr_uamor_mask; + thread->amr = pkey_amr_mask; + thread->iamr = pkey_iamr_mask; + thread->uamor = pkey_uamor_mask; + + write_uamor(pkey_uamor_mask); + write_amr(pkey_amr_mask); + write_iamr(pkey_iamr_mask); } static inline bool pkey_allows_readwrite(int pkey) @@ -322,48 +317,7 @@ static inline bool pkey_allows_readwrite(int pkey) int __execute_only_pkey(struct mm_struct *mm) { - bool need_to_set_mm_pkey = false; - int execute_only_pkey = mm->context.execute_only_pkey; - int ret; - - /* Do we need to assign a pkey for mm's execute-only maps? */ - if (execute_only_pkey == -1) { - /* Go allocate one to use, which might fail */ - execute_only_pkey = mm_pkey_alloc(mm); - if (execute_only_pkey < 0) - return -1; - need_to_set_mm_pkey = true; - } - - /* - * We do not want to go through the relatively costly dance to set AMR - * if we do not need to. Check it first and assume that if the - * execute-only pkey is readwrite-disabled than we do not have to set it - * ourselves. - */ - if (!need_to_set_mm_pkey && !pkey_allows_readwrite(execute_only_pkey)) - return execute_only_pkey; - - /* - * Set up AMR so that it denies access for everything other than - * execution. - */ - ret = __arch_set_user_pkey_access(current, execute_only_pkey, - PKEY_DISABLE_ACCESS | - PKEY_DISABLE_WRITE); - /* - * If the AMR-set operation failed somehow, just return 0 and - * effectively disable execute-only support. - */ - if (ret) { - mm_pkey_free(mm, execute_only_pkey); - return -1; - } - - /* We got one, store it and use it from here on out */ - if (need_to_set_mm_pkey) - mm->context.execute_only_pkey = execute_only_pkey; - return execute_only_pkey; + return mm->context.execute_only_pkey; } static inline bool vma_is_pkey_exec_only(struct vm_area_struct *vma) @@ -407,9 +361,6 @@ static bool pkey_access_permitted(int pkey, bool write, bool execute) int pkey_shift; u64 amr; - if (!pkey) - return true; - if (!is_pkey_enabled(pkey)) return true; diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index cb796724a6fc..0b095fa54049 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -90,6 +90,45 @@ static inline void create_shadowed_slbe(unsigned long ea, int ssize, : "memory" ); } +/* + * Insert bolted entries into SLB (which may not be empty, so don't clear + * slb_cache_ptr). + */ +void __slb_restore_bolted_realmode(void) +{ + struct slb_shadow *p = get_slb_shadow(); + enum slb_index index; + + /* No isync needed because realmode. */ + for (index = 0; index < SLB_NUM_BOLTED; index++) { + asm volatile("slbmte %0,%1" : + : "r" (be64_to_cpu(p->save_area[index].vsid)), + "r" (be64_to_cpu(p->save_area[index].esid))); + } +} + +/* + * Insert the bolted entries into an empty SLB. + * This is not the same as rebolt because the bolted segments are not + * changed, just loaded from the shadow area. + */ +void slb_restore_bolted_realmode(void) +{ + __slb_restore_bolted_realmode(); + get_paca()->slb_cache_ptr = 0; +} + +/* + * This flushes all SLB entries including 0, so it must be realmode. + */ +void slb_flush_all_realmode(void) +{ + /* + * This flushes all SLB entries including 0, so it must be realmode. + */ + asm volatile("slbmte %0,%0; slbia" : : "r" (0)); +} + static void __slb_flush_and_rebolt(void) { /* If you change this make sure you change SLB_NUM_BOLTED diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index a83fbd2a4a24..4ac5057ad439 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -22,6 +22,7 @@ #include <asm/mmu.h> #include <asm/pgtable.h> #include <asm/firmware.h> +#include <asm/feature-fixups.h> /* * This macro generates asm code to compute the VSID scramble diff --git a/arch/powerpc/mm/subpage-prot.c b/arch/powerpc/mm/subpage-prot.c index 9d16ee251fc0..3327551c8b47 100644 --- a/arch/powerpc/mm/subpage-prot.c +++ b/arch/powerpc/mm/subpage-prot.c @@ -17,7 +17,6 @@ #include <asm/pgtable.h> #include <linux/uaccess.h> -#include <asm/tlbflush.h> /* * Free all pages allocated for subpage protection maps and pointers. diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c index 1135b43a597c..fef3e1eb3a19 100644 --- a/arch/powerpc/mm/tlb-radix.c +++ b/arch/powerpc/mm/tlb-radix.c @@ -1048,24 +1048,6 @@ void radix__flush_tlb_all(void) asm volatile("eieio; tlbsync; ptesync": : :"memory"); } -void radix__flush_tlb_pte_p9_dd1(unsigned long old_pte, struct mm_struct *mm, - unsigned long address) -{ - /* - * We track page size in pte only for DD1, So we can - * call this only on DD1. - */ - if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) { - VM_WARN_ON(1); - return; - } - - if (old_pte & R_PAGE_LARGE) - radix__flush_tlb_page_psize(mm, address, MMU_PAGE_2M); - else - radix__flush_tlb_page_psize(mm, address, mmu_virtual_psize); -} - #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE extern void radix_kvm_prefetch_workaround(struct mm_struct *mm) { diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S index eb82d787d99a..7fd20c52a8ec 100644 --- a/arch/powerpc/mm/tlb_low_64e.S +++ b/arch/powerpc/mm/tlb_low_64e.S @@ -22,6 +22,7 @@ #include <asm/ppc-opcode.h> #include <asm/kvm_asm.h> #include <asm/kvm_booke_hv_asm.h> +#include <asm/feature-fixups.h> #ifdef CONFIG_PPC_64K_PAGES #define VPTE_PMD_SHIFT (PTE_INDEX_SIZE+1) diff --git a/arch/powerpc/mm/tlb_nohash_low.S b/arch/powerpc/mm/tlb_nohash_low.S index 048b8e9f4492..e066a658acac 100644 --- a/arch/powerpc/mm/tlb_nohash_low.S +++ b/arch/powerpc/mm/tlb_nohash_low.S @@ -34,6 +34,8 @@ #include <asm/asm-offsets.h> #include <asm/processor.h> #include <asm/bug.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> #if defined(CONFIG_40x) diff --git a/arch/powerpc/net/Makefile b/arch/powerpc/net/Makefile index 809f019d3cba..c2dec3a68d4c 100644 --- a/arch/powerpc/net/Makefile +++ b/arch/powerpc/net/Makefile @@ -2,7 +2,7 @@ # # Arch-specific network modules # -ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_PPC64 obj-$(CONFIG_BPF_JIT) += bpf_jit_comp64.o else obj-$(CONFIG_BPF_JIT) += bpf_jit_asm.o bpf_jit_comp.o diff --git a/arch/powerpc/net/bpf_jit32.h b/arch/powerpc/net/bpf_jit32.h index a8cd7e289ecd..6f4daacad296 100644 --- a/arch/powerpc/net/bpf_jit32.h +++ b/arch/powerpc/net/bpf_jit32.h @@ -13,6 +13,7 @@ #ifndef _BPF_JIT32_H #define _BPF_JIT32_H +#include <asm/asm-compat.h> #include "bpf_jit.h" #ifdef CONFIG_PPC64 diff --git a/arch/powerpc/net/bpf_jit_asm.S b/arch/powerpc/net/bpf_jit_asm.S index 3dd9c43d40c9..c80280dc2e04 100644 --- a/arch/powerpc/net/bpf_jit_asm.S +++ b/arch/powerpc/net/bpf_jit_asm.S @@ -10,6 +10,7 @@ */ #include <asm/ppc_asm.h> +#include <asm/asm-compat.h> #include "bpf_jit32.h" /* diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index 5b061fc81df3..d5bfe24bb3b5 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -12,6 +12,7 @@ */ #include <linux/moduleloader.h> #include <asm/cacheflush.h> +#include <asm/asm-compat.h> #include <linux/netdevice.h> #include <linux/filter.h> #include <linux/if_vlan.h> diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index c0a9bcd28356..50b129785aee 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -13,6 +13,7 @@ */ #include <linux/moduleloader.h> #include <asm/cacheflush.h> +#include <asm/asm-compat.h> #include <linux/netdevice.h> #include <linux/filter.h> #include <linux/if_vlan.h> diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 19d8ab49d1bd..81f8a0c838ae 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -128,10 +128,6 @@ static inline void power_pmu_bhrb_disable(struct perf_event *event) {} static void power_pmu_sched_task(struct perf_event_context *ctx, bool sched_in) {} static inline void power_pmu_bhrb_read(struct cpu_hw_events *cpuhw) {} static void pmao_restore_workaround(bool ebb) { } -static bool use_ic(u64 event) -{ - return false; -} #endif /* CONFIG_PPC32 */ static bool regs_use_siar(struct pt_regs *regs) @@ -714,14 +710,6 @@ static void pmao_restore_workaround(bool ebb) mtspr(SPRN_PMC6, pmcs[5]); } -static bool use_ic(u64 event) -{ - if (cpu_has_feature(CPU_FTR_POWER9_DD1) && - (event == 0x200f2 || event == 0x300f2)) - return true; - - return false; -} #endif /* CONFIG_PPC64 */ static void perf_event_interrupt(struct pt_regs *regs); @@ -1046,7 +1034,6 @@ static u64 check_and_compute_delta(u64 prev, u64 val) static void power_pmu_read(struct perf_event *event) { s64 val, delta, prev; - struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events); if (event->hw.state & PERF_HES_STOPPED) return; @@ -1056,13 +1043,6 @@ static void power_pmu_read(struct perf_event *event) if (is_ebb_event(event)) { val = read_pmc(event->hw.idx); - if (use_ic(event->attr.config)) { - val = mfspr(SPRN_IC); - if (val > cpuhw->ic_init) - val = val - cpuhw->ic_init; - else - val = val + (0 - cpuhw->ic_init); - } local64_set(&event->hw.prev_count, val); return; } @@ -1076,13 +1056,6 @@ static void power_pmu_read(struct perf_event *event) prev = local64_read(&event->hw.prev_count); barrier(); val = read_pmc(event->hw.idx); - if (use_ic(event->attr.config)) { - val = mfspr(SPRN_IC); - if (val > cpuhw->ic_init) - val = val - cpuhw->ic_init; - else - val = val + (0 - cpuhw->ic_init); - } delta = check_and_compute_delta(prev, val); if (!delta) return; @@ -1535,13 +1508,6 @@ nocheck: event->attr.branch_sample_type); } - /* - * Workaround for POWER9 DD1 to use the Instruction Counter - * register value for instruction counting - */ - if (use_ic(event->attr.config)) - cpuhw->ic_init = mfspr(SPRN_IC); - perf_pmu_enable(event->pmu); local_irq_restore(flags); return ret; diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index d1977b61f827..1fafc32b12a0 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -867,59 +867,6 @@ static int thread_imc_cpu_init(void) ppc_thread_imc_cpu_offline); } -void thread_imc_pmu_sched_task(struct perf_event_context *ctx, - bool sched_in) -{ - int core_id; - struct imc_pmu_ref *ref; - - if (!is_core_imc_mem_inited(smp_processor_id())) - return; - - core_id = smp_processor_id() / threads_per_core; - /* - * imc pmus are enabled only when it is used. - * See if this is triggered for the first time. - * If yes, take the mutex lock and enable the counters. - * If not, just increment the count in ref count struct. - */ - ref = &core_imc_refc[core_id]; - if (!ref) - return; - - if (sched_in) { - mutex_lock(&ref->lock); - if (ref->refc == 0) { - if (opal_imc_counters_start(OPAL_IMC_COUNTERS_CORE, - get_hard_smp_processor_id(smp_processor_id()))) { - mutex_unlock(&ref->lock); - pr_err("thread-imc: Unable to start the counter\ - for core %d\n", core_id); - return; - } - } - ++ref->refc; - mutex_unlock(&ref->lock); - } else { - mutex_lock(&ref->lock); - ref->refc--; - if (ref->refc == 0) { - if (opal_imc_counters_stop(OPAL_IMC_COUNTERS_CORE, - get_hard_smp_processor_id(smp_processor_id()))) { - mutex_unlock(&ref->lock); - pr_err("thread-imc: Unable to stop the counters\ - for core %d\n", core_id); - return; - } - } else if (ref->refc < 0) { - ref->refc = 0; - } - mutex_unlock(&ref->lock); - } - - return; -} - static int thread_imc_event_init(struct perf_event *event) { u32 config = event->attr.config; @@ -1046,22 +993,70 @@ static int imc_event_add(struct perf_event *event, int flags) static int thread_imc_event_add(struct perf_event *event, int flags) { + int core_id; + struct imc_pmu_ref *ref; + if (flags & PERF_EF_START) imc_event_start(event, flags); - /* Enable the sched_task to start the engine */ - perf_sched_cb_inc(event->ctx->pmu); + if (!is_core_imc_mem_inited(smp_processor_id())) + return -EINVAL; + + core_id = smp_processor_id() / threads_per_core; + /* + * imc pmus are enabled only when it is used. + * See if this is triggered for the first time. + * If yes, take the mutex lock and enable the counters. + * If not, just increment the count in ref count struct. + */ + ref = &core_imc_refc[core_id]; + if (!ref) + return -EINVAL; + + mutex_lock(&ref->lock); + if (ref->refc == 0) { + if (opal_imc_counters_start(OPAL_IMC_COUNTERS_CORE, + get_hard_smp_processor_id(smp_processor_id()))) { + mutex_unlock(&ref->lock); + pr_err("thread-imc: Unable to start the counter\ + for core %d\n", core_id); + return -EINVAL; + } + } + ++ref->refc; + mutex_unlock(&ref->lock); return 0; } static void thread_imc_event_del(struct perf_event *event, int flags) { + + int core_id; + struct imc_pmu_ref *ref; + /* * Take a snapshot and calculate the delta and update * the event counter values. */ imc_event_update(event); - perf_sched_cb_dec(event->ctx->pmu); + + core_id = smp_processor_id() / threads_per_core; + ref = &core_imc_refc[core_id]; + + mutex_lock(&ref->lock); + ref->refc--; + if (ref->refc == 0) { + if (opal_imc_counters_stop(OPAL_IMC_COUNTERS_CORE, + get_hard_smp_processor_id(smp_processor_id()))) { + mutex_unlock(&ref->lock); + pr_err("thread-imc: Unable to stop the counters\ + for core %d\n", core_id); + return; + } + } else if (ref->refc < 0) { + ref->refc = 0; + } + mutex_unlock(&ref->lock); } /* update_pmu_ops : Populate the appropriate operations for "pmu" */ @@ -1087,7 +1082,6 @@ static int update_pmu_ops(struct imc_pmu *pmu) break; case IMC_DOMAIN_THREAD: pmu->pmu.event_init = thread_imc_event_init; - pmu->pmu.sched_task = thread_imc_pmu_sched_task; pmu->pmu.add = thread_imc_event_add; pmu->pmu.del = thread_imc_event_del; pmu->pmu.start_txn = thread_imc_pmu_start_txn; diff --git a/arch/powerpc/perf/isa207-common.c b/arch/powerpc/perf/isa207-common.c index 2efee3f196f5..177de814286f 100644 --- a/arch/powerpc/perf/isa207-common.c +++ b/arch/powerpc/perf/isa207-common.c @@ -59,7 +59,7 @@ static bool is_event_valid(u64 event) { u64 valid_mask = EVENT_VALID_MASK; - if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + if (cpu_has_feature(CPU_FTR_ARCH_300)) valid_mask = p9_EVENT_VALID_MASK; return !(event & ~valid_mask); @@ -86,8 +86,6 @@ static void mmcra_sdar_mode(u64 event, unsigned long *mmcra) * Incase of Power9: * Marked event: MMCRA[SDAR_MODE] will be set to 0b00 ('No Updates'), * or if group already have any marked events. - * Non-Marked events (for DD1): - * MMCRA[SDAR_MODE] will be set to 0b01 * For rest * MMCRA[SDAR_MODE] will be set from event code. * If sdar_mode from event is zero, default to 0b01. Hardware @@ -96,7 +94,7 @@ static void mmcra_sdar_mode(u64 event, unsigned long *mmcra) if (cpu_has_feature(CPU_FTR_ARCH_300)) { if (is_event_marked(event) || (*mmcra & MMCRA_SAMPLE_ENABLE)) *mmcra &= MMCRA_SDAR_MODE_NO_UPDATES; - else if (!cpu_has_feature(CPU_FTR_POWER9_DD1) && p9_SDAR_MODE(event)) + else if (p9_SDAR_MODE(event)) *mmcra |= p9_SDAR_MODE(event) << MMCRA_SDAR_MODE_SHIFT; else *mmcra |= MMCRA_SDAR_MODE_DCACHE; @@ -106,7 +104,7 @@ static void mmcra_sdar_mode(u64 event, unsigned long *mmcra) static u64 thresh_cmp_val(u64 value) { - if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + if (cpu_has_feature(CPU_FTR_ARCH_300)) return value << p9_MMCRA_THR_CMP_SHIFT; return value << MMCRA_THR_CMP_SHIFT; @@ -114,7 +112,7 @@ static u64 thresh_cmp_val(u64 value) static unsigned long combine_from_event(u64 event) { - if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + if (cpu_has_feature(CPU_FTR_ARCH_300)) return p9_EVENT_COMBINE(event); return EVENT_COMBINE(event); @@ -122,7 +120,7 @@ static unsigned long combine_from_event(u64 event) static unsigned long combine_shift(unsigned long pmc) { - if (cpu_has_feature(CPU_FTR_ARCH_300) && !cpu_has_feature(CPU_FTR_POWER9_DD1)) + if (cpu_has_feature(CPU_FTR_ARCH_300)) return p9_MMCR1_COMBINE_SHIFT(pmc); return MMCR1_COMBINE_SHIFT(pmc); diff --git a/arch/powerpc/perf/isa207-common.h b/arch/powerpc/perf/isa207-common.h index 6a0b586c935a..0028f4b9490d 100644 --- a/arch/powerpc/perf/isa207-common.h +++ b/arch/powerpc/perf/isa207-common.h @@ -158,11 +158,6 @@ CNST_PMC_VAL(1) | CNST_PMC_VAL(2) | CNST_PMC_VAL(3) | \ CNST_PMC_VAL(4) | CNST_PMC_VAL(5) | CNST_PMC_VAL(6) | CNST_NC_VAL -/* - * Lets restrict use of PMC5 for instruction counting. - */ -#define P9_DD1_TEST_ADDER (ISA207_TEST_ADDER | CNST_PMC_VAL(5)) - /* Bits in MMCR1 for PowerISA v2.07 */ #define MMCR1_UNIT_SHIFT(pmc) (60 - (4 * ((pmc) - 1))) #define MMCR1_COMBINE_SHIFT(pmc) (35 - ((pmc) - 1)) diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c index 2ca0b33b4efb..e012b1030a5b 100644 --- a/arch/powerpc/perf/power9-pmu.c +++ b/arch/powerpc/perf/power9-pmu.c @@ -219,12 +219,6 @@ static struct attribute_group power9_pmu_events_group = { .attrs = power9_events_attr, }; -static const struct attribute_group *power9_isa207_pmu_attr_groups[] = { - &isa207_pmu_format_group, - &power9_pmu_events_group, - NULL, -}; - PMU_FORMAT_ATTR(event, "config:0-51"); PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); PMU_FORMAT_ATTR(mark, "config:8"); @@ -267,17 +261,6 @@ static const struct attribute_group *power9_pmu_attr_groups[] = { NULL, }; -static int power9_generic_events_dd1[] = { - [PERF_COUNT_HW_CPU_CYCLES] = PM_CYC, - [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = PM_ICT_NOSLOT_CYC, - [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = PM_CMPLU_STALL, - [PERF_COUNT_HW_INSTRUCTIONS] = PM_INST_DISP, - [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = PM_BR_CMPL_ALT, - [PERF_COUNT_HW_BRANCH_MISSES] = PM_BR_MPRED_CMPL, - [PERF_COUNT_HW_CACHE_REFERENCES] = PM_LD_REF_L1, - [PERF_COUNT_HW_CACHE_MISSES] = PM_LD_MISS_L1_FIN, -}; - static int power9_generic_events[] = { [PERF_COUNT_HW_CPU_CYCLES] = PM_CYC, [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = PM_ICT_NOSLOT_CYC, @@ -439,25 +422,6 @@ static int power9_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { #undef C -static struct power_pmu power9_isa207_pmu = { - .name = "POWER9", - .n_counter = MAX_PMU_COUNTERS, - .add_fields = ISA207_ADD_FIELDS, - .test_adder = P9_DD1_TEST_ADDER, - .compute_mmcr = isa207_compute_mmcr, - .config_bhrb = power9_config_bhrb, - .bhrb_filter_map = power9_bhrb_filter_map, - .get_constraint = isa207_get_constraint, - .get_alternatives = power9_get_alternatives, - .disable_pmc = isa207_disable_pmc, - .flags = PPMU_NO_SIAR | PPMU_ARCH_207S, - .n_generic = ARRAY_SIZE(power9_generic_events_dd1), - .generic_events = power9_generic_events_dd1, - .cache_events = &power9_cache_events, - .attr_groups = power9_isa207_pmu_attr_groups, - .bhrb_nr = 32, -}; - static struct power_pmu power9_pmu = { .name = "POWER9", .n_counter = MAX_PMU_COUNTERS, @@ -500,23 +464,7 @@ static int __init init_power9_pmu(void) } } - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - /* - * Since PM_INST_CMPL may not provide right counts in all - * sampling scenarios in power9 DD1, instead use PM_INST_DISP. - */ - EVENT_VAR(PM_INST_CMPL, _g).id = PM_INST_DISP; - /* - * Power9 DD1 should use PM_BR_CMPL_ALT event code for - * "branches" to provide correct counter value. - */ - EVENT_VAR(PM_BR_CMPL, _g).id = PM_BR_CMPL_ALT; - EVENT_VAR(PM_BR_CMPL, _c).id = PM_BR_CMPL_ALT; - rc = register_power_pmu(&power9_isa207_pmu); - } else { - rc = register_power_pmu(&power9_pmu); - } - + rc = register_power_pmu(&power9_pmu); if (rc) return rc; diff --git a/arch/powerpc/perf/req-gen/_begin.h b/arch/powerpc/perf/req-gen/_begin.h index 549f8782c52d..a200b86eba3b 100644 --- a/arch/powerpc/perf/req-gen/_begin.h +++ b/arch/powerpc/perf/req-gen/_begin.h @@ -3,6 +3,8 @@ #ifndef POWERPC_PERF_REQ_GEN_H_ #define POWERPC_PERF_REQ_GEN_H_ +#include <linux/stringify.h> + #define CAT2_STR_(t, s) __stringify(t/s) #define CAT2_STR(t, s) CAT2_STR_(t, s) #define I(...) __VA_ARGS__ diff --git a/arch/powerpc/perf/req-gen/perf.h b/arch/powerpc/perf/req-gen/perf.h index 871a9a1766c2..fa9bc804e67a 100644 --- a/arch/powerpc/perf/req-gen/perf.h +++ b/arch/powerpc/perf/req-gen/perf.h @@ -3,6 +3,7 @@ #define LINUX_POWERPC_PERF_REQ_GEN_PERF_H_ #include <linux/perf_event.h> +#include <linux/stringify.h> #ifndef REQUEST_FILE #error "REQUEST_FILE must be defined before including" diff --git a/arch/powerpc/platforms/4xx/msi.c b/arch/powerpc/platforms/4xx/msi.c index 81b2cbce7df8..7c324eff2f22 100644 --- a/arch/powerpc/platforms/4xx/msi.c +++ b/arch/powerpc/platforms/4xx/msi.c @@ -146,13 +146,19 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, const u32 *sdr_addr; dma_addr_t msi_phys; void *msi_virt; + int err; sdr_addr = of_get_property(dev->dev.of_node, "sdr-base", NULL); if (!sdr_addr) - return -1; + return -EINVAL; - mtdcri(SDR0, *sdr_addr, upper_32_bits(res.start)); /*HIGH addr */ - mtdcri(SDR0, *sdr_addr + 1, lower_32_bits(res.start)); /* Low addr */ + msi_data = of_get_property(dev->dev.of_node, "msi-data", NULL); + if (!msi_data) + return -EINVAL; + + msi_mask = of_get_property(dev->dev.of_node, "msi-mask", NULL); + if (!msi_mask) + return -EINVAL; msi->msi_dev = of_find_node_by_name(NULL, "ppc4xx-msi"); if (!msi->msi_dev) @@ -160,30 +166,30 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, msi->msi_regs = of_iomap(msi->msi_dev, 0); if (!msi->msi_regs) { - dev_err(&dev->dev, "of_iomap problem failed\n"); - return -ENOMEM; + dev_err(&dev->dev, "of_iomap failed\n"); + err = -ENOMEM; + goto node_put; } dev_dbg(&dev->dev, "PCIE-MSI: msi register mapped 0x%x 0x%x\n", (u32) (msi->msi_regs + PEIH_TERMADH), (u32) (msi->msi_regs)); msi_virt = dma_alloc_coherent(&dev->dev, 64, &msi_phys, GFP_KERNEL); - if (!msi_virt) - return -ENOMEM; + if (!msi_virt) { + err = -ENOMEM; + goto iounmap; + } msi->msi_addr_hi = upper_32_bits(msi_phys); msi->msi_addr_lo = lower_32_bits(msi_phys & 0xffffffff); dev_dbg(&dev->dev, "PCIE-MSI: msi address high 0x%x, low 0x%x\n", msi->msi_addr_hi, msi->msi_addr_lo); + mtdcri(SDR0, *sdr_addr, upper_32_bits(res.start)); /*HIGH addr */ + mtdcri(SDR0, *sdr_addr + 1, lower_32_bits(res.start)); /* Low addr */ + /* Progam the Interrupt handler Termination addr registers */ out_be32(msi->msi_regs + PEIH_TERMADH, msi->msi_addr_hi); out_be32(msi->msi_regs + PEIH_TERMADL, msi->msi_addr_lo); - msi_data = of_get_property(dev->dev.of_node, "msi-data", NULL); - if (!msi_data) - return -1; - msi_mask = of_get_property(dev->dev.of_node, "msi-mask", NULL); - if (!msi_mask) - return -1; /* Program MSI Expected data and Mask bits */ out_be32(msi->msi_regs + PEIH_MSIED, *msi_data); out_be32(msi->msi_regs + PEIH_MSIMK, *msi_mask); @@ -191,6 +197,12 @@ static int ppc4xx_setup_pcieh_hw(struct platform_device *dev, dma_free_coherent(&dev->dev, 64, msi_virt, msi_phys); return 0; + +iounmap: + iounmap(msi->msi_regs); +node_put: + of_node_put(msi->msi_dev); + return err; } static int ppc4xx_of_msi_remove(struct platform_device *dev) @@ -209,7 +221,6 @@ static int ppc4xx_of_msi_remove(struct platform_device *dev) msi_bitmap_free(&msi->bitmap); iounmap(msi->msi_regs); of_node_put(msi->msi_dev); - kfree(msi); return 0; } @@ -223,18 +234,16 @@ static int ppc4xx_msi_probe(struct platform_device *dev) dev_dbg(&dev->dev, "PCIE-MSI: Setting up MSI support...\n"); - msi = kzalloc(sizeof(*msi), GFP_KERNEL); - if (!msi) { - dev_err(&dev->dev, "No memory for MSI structure\n"); + msi = devm_kzalloc(&dev->dev, sizeof(*msi), GFP_KERNEL); + if (!msi) return -ENOMEM; - } dev->dev.platform_data = msi; /* Get MSI ranges */ err = of_address_to_resource(dev->dev.of_node, 0, &res); if (err) { dev_err(&dev->dev, "%pOF resource error!\n", dev->dev.of_node); - goto error_out; + return err; } msi_irqs = of_irq_count(dev->dev.of_node); @@ -243,7 +252,7 @@ static int ppc4xx_msi_probe(struct platform_device *dev) err = ppc4xx_setup_pcieh_hw(dev, res, msi); if (err) - goto error_out; + return err; err = ppc4xx_msi_init_allocator(dev, msi); if (err) { @@ -256,7 +265,7 @@ static int ppc4xx_msi_probe(struct platform_device *dev) phb->controller_ops.setup_msi_irqs = ppc4xx_setup_msi_irqs; phb->controller_ops.teardown_msi_irqs = ppc4xx_teardown_msi_irqs; } - return err; + return 0; error_out: ppc4xx_of_msi_remove(dev); diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile index ff2f86fe5429..f40d48eab779 100644 --- a/arch/powerpc/platforms/52xx/Makefile +++ b/arch/powerpc/platforms/52xx/Makefile @@ -11,7 +11,7 @@ obj-$(CONFIG_PPC_LITE5200) += lite5200.o obj-$(CONFIG_PPC_MEDIA5200) += media5200.o obj-$(CONFIG_PM) += mpc52xx_sleep.o mpc52xx_pm.o -ifeq ($(CONFIG_PPC_LITE5200),y) +ifdef CONFIG_PPC_LITE5200 obj-$(CONFIG_PM) += lite5200_sleep.o lite5200_pm.o endif diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pm.c b/arch/powerpc/platforms/52xx/mpc52xx_pm.c index 31d3515672f3..b1d208ded981 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_pm.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_pm.c @@ -117,7 +117,10 @@ int mpc52xx_pm_enter(suspend_state_t state) u32 intr_main_mask; void __iomem * irq_0x500 = (void __iomem *)CONFIG_KERNEL_START + 0x500; unsigned long irq_0x500_stop = (unsigned long)irq_0x500 + mpc52xx_ds_cached_size; - char saved_0x500[mpc52xx_ds_cached_size]; + char saved_0x500[0x600-0x500]; + + if (WARN_ON(mpc52xx_ds_cached_size > sizeof(saved_0x500))) + return -ENOMEM; /* disable all interrupts in PIC */ intr_main_mask = in_be32(&intr->main_mask); diff --git a/arch/powerpc/platforms/85xx/t1042rdb_diu.c b/arch/powerpc/platforms/85xx/t1042rdb_diu.c index 58fa3d319f1c..dac36ba82fea 100644 --- a/arch/powerpc/platforms/85xx/t1042rdb_diu.c +++ b/arch/powerpc/platforms/85xx/t1042rdb_diu.c @@ -9,8 +9,10 @@ * option) any later version. */ +#include <linux/init.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> @@ -150,3 +152,5 @@ static int __init t1042rdb_diu_init(void) } early_initcall(t1042rdb_diu_init); + +MODULE_LICENSE("GPL"); diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index e6a1de521319..6c6a7c72cae4 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -74,7 +74,6 @@ config PPC_BOOK3S_64 select HAVE_ARCH_TRANSPARENT_HUGEPAGE select ARCH_SUPPORTS_NUMA_BALANCING select IRQ_WORK - select HAVE_KERNEL_XZ config PPC_BOOK3E_64 bool "Embedded processors" @@ -86,7 +85,6 @@ endchoice choice prompt "CPU selection" - depends on PPC64 default GENERIC_CPU help This will create a kernel which is optimised for a particular CPU. @@ -96,13 +94,17 @@ choice config GENERIC_CPU bool "Generic (POWER4 and above)" - depends on !CPU_LITTLE_ENDIAN + depends on PPC64 && !CPU_LITTLE_ENDIAN config GENERIC_CPU bool "Generic (POWER8 and above)" - depends on CPU_LITTLE_ENDIAN + depends on PPC64 && CPU_LITTLE_ENDIAN select ARCH_HAS_FAST_MULTIPLIER +config GENERIC_CPU + bool "Generic 32 bits powerpc" + depends on PPC32 && !PPC_8xx + config CELL_CPU bool "Cell Broadband Engine" depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN @@ -138,8 +140,37 @@ config E6500_CPU bool "Freescale e6500" depends on E500 +config 860_CPU + bool "8xx family" + depends on PPC_8xx + +config E300C2_CPU + bool "e300c2 (832x)" + depends on PPC_BOOK3S_32 + +config E300C3_CPU + bool "e300c3 (831x)" + depends on PPC_BOOK3S_32 + endchoice +config TARGET_CPU_BOOL + bool + default !GENERIC_CPU + +config TARGET_CPU + string + depends on TARGET_CPU_BOOL + default "cell" if CELL_CPU + default "power5" if POWER5_CPU + default "power6" if POWER6_CPU + default "power7" if POWER7_CPU + default "power8" if POWER8_CPU + default "power9" if POWER9_CPU + default "860" if 860_CPU + default "e300c2" if E300C2_CPU + default "e300c3" if E300C3_CPU + config PPC_BOOK3S def_bool y depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile index d5f808e8a5f3..10064a33ca96 100644 --- a/arch/powerpc/platforms/cell/Makefile +++ b/arch/powerpc/platforms/cell/Makefile @@ -10,7 +10,7 @@ obj-$(CONFIG_CBE_CPUFREQ_SPU_GOVERNOR) += cpufreq_spudemand.o obj-$(CONFIG_PPC_IBM_CELL_POWERBUTTON) += cbe_powerbutton.o -ifeq ($(CONFIG_SMP),y) +ifdef CONFIG_SMP obj-$(CONFIG_PPC_CELL_NATIVE) += smp.o endif diff --git a/arch/powerpc/platforms/cell/cbe_thermal.c b/arch/powerpc/platforms/cell/cbe_thermal.c index 2c15ff094483..55aac74e1cb9 100644 --- a/arch/powerpc/platforms/cell/cbe_thermal.c +++ b/arch/powerpc/platforms/cell/cbe_thermal.c @@ -49,6 +49,7 @@ #include <linux/device.h> #include <linux/kernel.h> #include <linux/cpu.h> +#include <linux/stringify.h> #include <asm/spu.h> #include <asm/io.h> #include <asm/prom.h> diff --git a/arch/powerpc/platforms/cell/spufs/sputrace.h b/arch/powerpc/platforms/cell/spufs/sputrace.h index d557e999b662..1def11e911ac 100644 --- a/arch/powerpc/platforms/cell/spufs/sputrace.h +++ b/arch/powerpc/platforms/cell/spufs/sputrace.h @@ -3,6 +3,7 @@ #define _TRACE_SPUFS_H #include <linux/tracepoint.h> +#include <linux/stringify.h> #undef TRACE_SYSTEM #define TRACE_SYSTEM spufs diff --git a/arch/powerpc/platforms/chrp/nvram.c b/arch/powerpc/platforms/chrp/nvram.c index c3ede2c365c3..791b86398e1d 100644 --- a/arch/powerpc/platforms/chrp/nvram.c +++ b/arch/powerpc/platforms/chrp/nvram.c @@ -11,6 +11,7 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/init.h> #include <linux/spinlock.h> #include <linux/uaccess.h> @@ -89,3 +90,5 @@ void __init chrp_nvram_init(void) return; } + +MODULE_LICENSE("GPL v2"); diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c index 8bb46dcbebd8..403523c061ba 100644 --- a/arch/powerpc/platforms/embedded6xx/wii.c +++ b/arch/powerpc/platforms/embedded6xx/wii.c @@ -67,16 +67,6 @@ void __init wii_memory_fixups(void) { struct memblock_region *p = memblock.memory.regions; - /* - * This is part of a workaround to allow the use of two - * discontinuous RAM ranges on the Wii, even if this is - * currently unsupported on 32-bit PowerPC Linux. - * - * We coalesce the two memory ranges of the Wii into a - * single range, then create a reservation for the "hole" - * between both ranges. - */ - BUG_ON(memblock.memory.cnt != 2); BUG_ON(!page_aligned(p[0].base) || !page_aligned(p[1].base)); diff --git a/arch/powerpc/platforms/pasemi/dma_lib.c b/arch/powerpc/platforms/pasemi/dma_lib.c index 2c72263ad6ab..c80f72c370ae 100644 --- a/arch/powerpc/platforms/pasemi/dma_lib.c +++ b/arch/powerpc/platforms/pasemi/dma_lib.c @@ -531,7 +531,7 @@ int pasemi_dma_init(void) iob_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL); if (!iob_pdev) { BUG(); - printk(KERN_WARNING "Can't find I/O Bridge\n"); + pr_warn("Can't find I/O Bridge\n"); err = -ENODEV; goto out; } @@ -540,7 +540,7 @@ int pasemi_dma_init(void) dma_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa007, NULL); if (!dma_pdev) { BUG(); - printk(KERN_WARNING "Can't find DMA controller\n"); + pr_warn("Can't find DMA controller\n"); err = -ENODEV; goto out; } @@ -623,7 +623,7 @@ int pasemi_dma_init(void) pasemi_write_dma_reg(PAS_DMA_TXF_CFLG0, 0xffffffff); pasemi_write_dma_reg(PAS_DMA_TXF_CFLG1, 0xffffffff); - printk(KERN_INFO "PA Semi PWRficient DMA library initialized " + pr_info("PA Semi PWRficient DMA library initialized " "(%d tx, %d rx channels)\n", num_txch, num_rxch); out: diff --git a/arch/powerpc/platforms/pasemi/gpio_mdio.c b/arch/powerpc/platforms/pasemi/gpio_mdio.c index c23e60959aa8..6f35a2afe522 100644 --- a/arch/powerpc/platforms/pasemi/gpio_mdio.c +++ b/arch/powerpc/platforms/pasemi/gpio_mdio.c @@ -256,7 +256,7 @@ static int gpio_mdio_probe(struct platform_device *ofdev) err = of_mdiobus_register(new_bus, np); if (err != 0) { - printk(KERN_ERR "%s: Cannot register as MDIO bus, err %d\n", + pr_err("%s: Cannot register as MDIO bus, err %d\n", new_bus->name, err); goto out_free_irq; } diff --git a/arch/powerpc/platforms/pasemi/idle.c b/arch/powerpc/platforms/pasemi/idle.c index 44e0d9226f0a..8bb4e8082441 100644 --- a/arch/powerpc/platforms/pasemi/idle.c +++ b/arch/powerpc/platforms/pasemi/idle.c @@ -78,13 +78,13 @@ static int pasemi_system_reset_exception(struct pt_regs *regs) static int __init pasemi_idle_init(void) { #ifndef CONFIG_PPC_PASEMI_CPUFREQ - printk(KERN_WARNING "No cpufreq driver, powersavings modes disabled\n"); + pr_warn("No cpufreq driver, powersavings modes disabled\n"); current_mode = 0; #endif ppc_md.system_reset_exception = pasemi_system_reset_exception; ppc_md.power_save = modes[current_mode].entry; - printk(KERN_INFO "Using PA6T idle loop (%s)\n", modes[current_mode].name); + pr_info("Using PA6T idle loop (%s)\n", modes[current_mode].name); return 0; } diff --git a/arch/powerpc/platforms/pasemi/iommu.c b/arch/powerpc/platforms/pasemi/iommu.c index 78b80cbd9768..f06c83f321e6 100644 --- a/arch/powerpc/platforms/pasemi/iommu.c +++ b/arch/powerpc/platforms/pasemi/iommu.c @@ -210,7 +210,7 @@ static int __init iob_init(struct device_node *dn) /* For 2G space, 8x64 pages (2^21 bytes) is max total l2 size */ iob_l2_base = (u32 *)__va(memblock_alloc_base(1UL<<21, 1UL<<21, 0x80000000)); - printk(KERN_INFO "IOBMAP L2 allocated at: %p\n", iob_l2_base); + pr_info("IOBMAP L2 allocated at: %p\n", iob_l2_base); /* Allocate a spare page to map all invalid IOTLB pages. */ tmp = memblock_alloc(IOBMAP_PAGE_SIZE, IOBMAP_PAGE_SIZE); diff --git a/arch/powerpc/platforms/pasemi/misc.c b/arch/powerpc/platforms/pasemi/misc.c index 8571e7bf78b6..aa958a46957f 100644 --- a/arch/powerpc/platforms/pasemi/misc.c +++ b/arch/powerpc/platforms/pasemi/misc.c @@ -69,9 +69,7 @@ static int __init pasemi_register_i2c_devices(void) addr = of_get_property(node, "reg", &len); if (!addr || len < sizeof(int) || *addr > (1 << 10) - 1) { - printk(KERN_WARNING - "pasemi_register_i2c_devices: " - "invalid i2c device entry\n"); + pr_warn("pasemi_register_i2c_devices: invalid i2c device entry\n"); continue; } diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c index aea9ff2c8e6d..c3c64172482d 100644 --- a/arch/powerpc/platforms/pasemi/pci.c +++ b/arch/powerpc/platforms/pasemi/pci.c @@ -205,7 +205,7 @@ static int __init pas_add_bridge(struct device_node *dev) setup_pa_pxp(hose); - printk(KERN_INFO "Found PA-PXP PCI host bridge.\n"); + pr_info("Found PA-PXP PCI host bridge.\n"); /* Interpret the "ranges" property */ pci_process_bridge_OF_ranges(hose, dev, 1); @@ -216,21 +216,21 @@ static int __init pas_add_bridge(struct device_node *dev) void __init pas_pci_init(void) { struct device_node *np, *root; + int res; root = of_find_node_by_path("/"); if (!root) { - printk(KERN_CRIT "pas_pci_init: can't find root " - "of device tree\n"); + pr_crit("pas_pci_init: can't find root of device tree\n"); return; } pci_set_flags(PCI_SCAN_ALL_PCIE_DEVS); - for (np = NULL; (np = of_get_next_child(root, np)) != NULL;) - if (np->name && !strcmp(np->name, "pxp") && !pas_add_bridge(np)) - of_node_get(np); - - of_node_put(root); + np = of_find_compatible_node(root, NULL, "pasemi,rootbus"); + if (np) { + res = pas_add_bridge(np); + of_node_put(np); + } } void __iomem *pasemi_pci_getcfgaddr(struct pci_dev *dev, int offset) diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c index d0b8ae53660d..9a6eb04cca83 100644 --- a/arch/powerpc/platforms/pasemi/setup.c +++ b/arch/powerpc/platforms/pasemi/setup.c @@ -207,8 +207,7 @@ static __init void pas_init_IRQ(void) break; } if (!mpic_node) { - printk(KERN_ERR - "Failed to locate the MPIC interrupt controller\n"); + pr_err("Failed to locate the MPIC interrupt controller\n"); return; } @@ -217,12 +216,12 @@ static __init void pas_init_IRQ(void) naddr = of_n_addr_cells(root); opprop = of_get_property(root, "platform-open-pic", &opplen); if (!opprop) { - printk(KERN_ERR "No platform-open-pic property.\n"); + pr_err("No platform-open-pic property.\n"); of_node_put(root); return; } openpic_addr = of_read_number(opprop, naddr); - printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr); + pr_debug("OpenPIC addr: %lx\n", openpic_addr); mpic_flags = MPIC_LARGE_VECTORS | MPIC_NO_BIAS | MPIC_NO_RESET; @@ -265,72 +264,72 @@ static int pas_machine_check_handler(struct pt_regs *regs) srr1 = regs->msr; if (nmi_virq && mpic_get_mcirq() == nmi_virq) { - printk(KERN_ERR "NMI delivered\n"); + pr_err("NMI delivered\n"); debugger(regs); mpic_end_irq(irq_get_irq_data(nmi_virq)); goto out; } dsisr = mfspr(SPRN_DSISR); - printk(KERN_ERR "Machine Check on CPU %d\n", cpu); - printk(KERN_ERR "SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1); - printk(KERN_ERR "DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar); - printk(KERN_ERR "BER 0x%016lx MER 0x%016lx\n", mfspr(SPRN_PA6T_BER), + pr_err("Machine Check on CPU %d\n", cpu); + pr_err("SRR0 0x%016lx SRR1 0x%016lx\n", srr0, srr1); + pr_err("DSISR 0x%016lx DAR 0x%016lx\n", dsisr, regs->dar); + pr_err("BER 0x%016lx MER 0x%016lx\n", mfspr(SPRN_PA6T_BER), mfspr(SPRN_PA6T_MER)); - printk(KERN_ERR "IER 0x%016lx DER 0x%016lx\n", mfspr(SPRN_PA6T_IER), + pr_err("IER 0x%016lx DER 0x%016lx\n", mfspr(SPRN_PA6T_IER), mfspr(SPRN_PA6T_DER)); - printk(KERN_ERR "Cause:\n"); + pr_err("Cause:\n"); if (srr1 & 0x200000) - printk(KERN_ERR "Signalled by SDC\n"); + pr_err("Signalled by SDC\n"); if (srr1 & 0x100000) { - printk(KERN_ERR "Load/Store detected error:\n"); + pr_err("Load/Store detected error:\n"); if (dsisr & 0x8000) - printk(KERN_ERR "D-cache ECC double-bit error or bus error\n"); + pr_err("D-cache ECC double-bit error or bus error\n"); if (dsisr & 0x4000) - printk(KERN_ERR "LSU snoop response error\n"); + pr_err("LSU snoop response error\n"); if (dsisr & 0x2000) { - printk(KERN_ERR "MMU SLB multi-hit or invalid B field\n"); + pr_err("MMU SLB multi-hit or invalid B field\n"); dump_slb = 1; } if (dsisr & 0x1000) - printk(KERN_ERR "Recoverable Duptags\n"); + pr_err("Recoverable Duptags\n"); if (dsisr & 0x800) - printk(KERN_ERR "Recoverable D-cache parity error count overflow\n"); + pr_err("Recoverable D-cache parity error count overflow\n"); if (dsisr & 0x400) - printk(KERN_ERR "TLB parity error count overflow\n"); + pr_err("TLB parity error count overflow\n"); } if (srr1 & 0x80000) - printk(KERN_ERR "Bus Error\n"); + pr_err("Bus Error\n"); if (srr1 & 0x40000) { - printk(KERN_ERR "I-side SLB multiple hit\n"); + pr_err("I-side SLB multiple hit\n"); dump_slb = 1; } if (srr1 & 0x20000) - printk(KERN_ERR "I-cache parity error hit\n"); + pr_err("I-cache parity error hit\n"); if (num_mce_regs == 0) - printk(KERN_ERR "No MCE registers mapped yet, can't dump\n"); + pr_err("No MCE registers mapped yet, can't dump\n"); else - printk(KERN_ERR "SoC debug registers:\n"); + pr_err("SoC debug registers:\n"); for (i = 0; i < num_mce_regs; i++) - printk(KERN_ERR "%s: 0x%08x\n", mce_regs[i].name, + pr_err("%s: 0x%08x\n", mce_regs[i].name, in_le32(mce_regs[i].addr)); if (dump_slb) { unsigned long e, v; int i; - printk(KERN_ERR "slb contents:\n"); + pr_err("slb contents:\n"); for (i = 0; i < mmu_slb_size; i++) { asm volatile("slbmfee %0,%1" : "=r" (e) : "r" (i)); asm volatile("slbmfev %0,%1" : "=r" (v) : "r" (i)); - printk(KERN_ERR "%02d %016lx %016lx\n", i, e, v); + pr_err("%02d %016lx %016lx\n", i, e, v); } } diff --git a/arch/powerpc/platforms/powermac/cache.S b/arch/powerpc/platforms/powermac/cache.S index cc5347eb1662..27862feee4a5 100644 --- a/arch/powerpc/platforms/powermac/cache.S +++ b/arch/powerpc/platforms/powermac/cache.S @@ -17,6 +17,7 @@ #include <asm/processor.h> #include <asm/ppc_asm.h> #include <asm/cputable.h> +#include <asm/feature-fixups.h> /* * Flush and disable all data caches (dL1, L2, L3). This is used diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c index 3f82cb24eb2b..4eb8cb38fc69 100644 --- a/arch/powerpc/platforms/powermac/feature.c +++ b/arch/powerpc/platforms/powermac/feature.c @@ -2889,10 +2889,8 @@ set_initial_features(void) /* On all machines, switch modem & serial ports off */ for_each_node_by_name(np, "ch-a") initial_serial_shutdown(np); - of_node_put(np); for_each_node_by_name(np, "ch-b") initial_serial_shutdown(np); - of_node_put(np); } void __init diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c index df762bb3c735..04527d13d5a4 100644 --- a/arch/powerpc/platforms/powermac/pci.c +++ b/arch/powerpc/platforms/powermac/pci.c @@ -781,12 +781,12 @@ static int __init pmac_add_bridge(struct device_node *dev) struct resource rsrc; char *disp_name; const int *bus_range; - int primary = 1, has_address = 0; + int primary = 1; DBG("Adding PCI host bridge %pOF\n", dev); /* Fetch host bridge registers address */ - has_address = (of_address_to_resource(dev, 0, &rsrc) == 0); + of_address_to_resource(dev, 0, &rsrc); /* Get bus range if any */ bus_range = of_get_property(dev, "bus-range", &len); @@ -904,7 +904,7 @@ static int pmac_pci_root_bridge_prepare(struct pci_host_bridge *bridge) void __init pmac_pci_init(void) { struct device_node *np, *root; - struct device_node *ht = NULL; + struct device_node *ht __maybe_unused = NULL; pci_set_flags(PCI_CAN_SKIP_ISA_ALIGN); @@ -1019,7 +1019,7 @@ static bool pmac_pci_enable_device_hook(struct pci_dev *dev) return true; } -void pmac_pci_fixup_ohci(struct pci_dev *dev) +static void pmac_pci_fixup_ohci(struct pci_dev *dev) { struct device_node *node = pci_device_to_OF_node(dev); @@ -1054,7 +1054,7 @@ void __init pmac_pcibios_after_init(void) } } -void pmac_pci_fixup_cardbus(struct pci_dev* dev) +static void pmac_pci_fixup_cardbus(struct pci_dev *dev) { if (!machine_is(powermac)) return; @@ -1091,7 +1091,7 @@ void pmac_pci_fixup_cardbus(struct pci_dev* dev) DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_ANY_ID, pmac_pci_fixup_cardbus); -void pmac_pci_fixup_pciata(struct pci_dev* dev) +static void pmac_pci_fixup_pciata(struct pci_dev *dev) { u8 progif = 0; diff --git a/arch/powerpc/platforms/powermac/sleep.S b/arch/powerpc/platforms/powermac/sleep.S index 1c2802fabd57..f89808b9713d 100644 --- a/arch/powerpc/platforms/powermac/sleep.S +++ b/arch/powerpc/platforms/powermac/sleep.S @@ -18,6 +18,7 @@ #include <asm/thread_info.h> #include <asm/asm-offsets.h> #include <asm/mmu.h> +#include <asm/feature-fixups.h> #define MAGIC 0x4c617273 /* 'Lars' */ diff --git a/arch/powerpc/platforms/powermac/time.c b/arch/powerpc/platforms/powermac/time.c index 12e6e4d30602..f92c1918fb56 100644 --- a/arch/powerpc/platforms/powermac/time.c +++ b/arch/powerpc/platforms/powermac/time.c @@ -34,6 +34,8 @@ #include <asm/nvram.h> #include <asm/smu.h> +#include "pmac.h" + #undef DEBUG #ifdef DEBUG @@ -249,7 +251,7 @@ int pmac_set_rtc_time(struct rtc_time *tm) * Calibrate the decrementer register using VIA timer 1. * This is used both on powermacs and CHRP machines. */ -int __init via_calibrate_decr(void) +static int __init via_calibrate_decr(void) { struct device_node *vias; volatile unsigned char __iomem *via; diff --git a/arch/powerpc/platforms/powermac/udbg_scc.c b/arch/powerpc/platforms/powermac/udbg_scc.c index d83135a9830e..8901973ed683 100644 --- a/arch/powerpc/platforms/powermac/udbg_scc.c +++ b/arch/powerpc/platforms/powermac/udbg_scc.c @@ -73,7 +73,7 @@ void udbg_scc_init(int force_scc) struct device_node *stdout = NULL, *escc = NULL, *macio = NULL; struct device_node *ch, *ch_def = NULL, *ch_a = NULL; const char *path; - int i, x; + int i; escc = of_find_node_by_name(NULL, "escc"); if (escc == NULL) @@ -120,7 +120,7 @@ void udbg_scc_init(int force_scc) mb(); for (i = 20000; i != 0; --i) - x = in_8(sccc); + in_8(sccc); out_8(sccc, 0x09); /* reset A or B side */ out_8(sccc, 0xc0); diff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile index 703a350a7f4e..b540ce8eec55 100644 --- a/arch/powerpc/platforms/powernv/Makefile +++ b/arch/powerpc/platforms/powernv/Makefile @@ -6,7 +6,7 @@ obj-y += opal-msglog.o opal-hmi.o opal-power.o opal-irqchip.o obj-y += opal-kmsg.o opal-powercap.o opal-psr.o opal-sensor-groups.o obj-$(CONFIG_SMP) += smp.o subcore.o subcore-asm.o -obj-$(CONFIG_PCI) += pci.o pci-ioda.o npu-dma.o +obj-$(CONFIG_PCI) += pci.o pci-ioda.o npu-dma.o pci-ioda-tce.o obj-$(CONFIG_CXL_BASE) += pci-cxl.o obj-$(CONFIG_EEH) += eeh-powernv.o obj-$(CONFIG_PPC_SCOM) += opal-xscom.o diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index ddfc3544d285..3c1beae29f2d 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -223,6 +223,14 @@ int pnv_eeh_post_init(void) eeh_probe_devices(); eeh_addr_cache_build(); + if (eeh_has_flag(EEH_POSTPONED_PROBE)) { + eeh_clear_flag(EEH_POSTPONED_PROBE); + if (eeh_enabled()) + pr_info("EEH: PCI Enhanced I/O Error Handling Enabled\n"); + else + pr_info("EEH: No capable adapters found\n"); + } + /* Register OPAL event notifier */ eeh_event_irq = opal_event_request(ilog2(OPAL_EVENT_PCI_ERROR)); if (eeh_event_irq < 0) { @@ -384,8 +392,10 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data) return NULL; /* Skip if we haven't probed yet */ - if (phb->ioda.pe_rmap[config_addr] == IODA_INVALID_PE) + if (phb->ioda.pe_rmap[config_addr] == IODA_INVALID_PE) { + eeh_add_flag(EEH_POSTPONED_PROBE); return NULL; + } /* Initialize eeh device */ edev->class_code = pdn->class_code; diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c index 1c5d0675b43c..35f699ebb662 100644 --- a/arch/powerpc/platforms/powernv/idle.c +++ b/arch/powerpc/platforms/powernv/idle.c @@ -36,6 +36,8 @@ #define P9_STOP_SPR_PSSCR 855 static u32 supported_cpuidle_states; +struct pnv_idle_states_t *pnv_idle_states; +int nr_pnv_idle_states; /* * The default stop state that will be used by ppc_md.power_save @@ -177,11 +179,6 @@ static void pnv_alloc_idle_core_states(void) paca_ptrs[cpu]->core_idle_state_ptr = core_idle_state; paca_ptrs[cpu]->thread_idle_state = PNV_THREAD_RUNNING; paca_ptrs[cpu]->thread_mask = 1 << j; - if (!cpu_has_feature(CPU_FTR_POWER9_DD1)) - continue; - paca_ptrs[cpu]->thread_sibling_pacas = - kmalloc_node(paca_ptr_array_size, - GFP_KERNEL, node); } } @@ -622,48 +619,10 @@ int validate_psscr_val_mask(u64 *psscr_val, u64 *psscr_mask, u32 flags) * @dt_idle_states: Number of idle state entries * Returns 0 on success */ -static int __init pnv_power9_idle_init(struct device_node *np, u32 *flags, - int dt_idle_states) +static int __init pnv_power9_idle_init(void) { - u64 *psscr_val = NULL; - u64 *psscr_mask = NULL; - u32 *residency_ns = NULL; u64 max_residency_ns = 0; - int rc = 0, i; - - psscr_val = kcalloc(dt_idle_states, sizeof(*psscr_val), GFP_KERNEL); - psscr_mask = kcalloc(dt_idle_states, sizeof(*psscr_mask), GFP_KERNEL); - residency_ns = kcalloc(dt_idle_states, sizeof(*residency_ns), - GFP_KERNEL); - - if (!psscr_val || !psscr_mask || !residency_ns) { - rc = -1; - goto out; - } - - if (of_property_read_u64_array(np, - "ibm,cpu-idle-state-psscr", - psscr_val, dt_idle_states)) { - pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr in DT\n"); - rc = -1; - goto out; - } - - if (of_property_read_u64_array(np, - "ibm,cpu-idle-state-psscr-mask", - psscr_mask, dt_idle_states)) { - pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr-mask in DT\n"); - rc = -1; - goto out; - } - - if (of_property_read_u32_array(np, - "ibm,cpu-idle-state-residency-ns", - residency_ns, dt_idle_states)) { - pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-residency-ns in DT\n"); - rc = -1; - goto out; - } + int i; /* * Set pnv_first_deep_stop_state, pnv_deepest_stop_psscr_{val,mask}, @@ -679,33 +638,37 @@ static int __init pnv_power9_idle_init(struct device_node *np, u32 *flags, * the shallowest (OPAL_PM_STOP_INST_FAST) loss-less stop state. */ pnv_first_deep_stop_state = MAX_STOP_STATE; - for (i = 0; i < dt_idle_states; i++) { + for (i = 0; i < nr_pnv_idle_states; i++) { int err; - u64 psscr_rl = psscr_val[i] & PSSCR_RL_MASK; + struct pnv_idle_states_t *state = &pnv_idle_states[i]; + u64 psscr_rl = state->psscr_val & PSSCR_RL_MASK; - if ((flags[i] & OPAL_PM_LOSE_FULL_CONTEXT) && - (pnv_first_deep_stop_state > psscr_rl)) + if ((state->flags & OPAL_PM_LOSE_FULL_CONTEXT) && + pnv_first_deep_stop_state > psscr_rl) pnv_first_deep_stop_state = psscr_rl; - err = validate_psscr_val_mask(&psscr_val[i], &psscr_mask[i], - flags[i]); + err = validate_psscr_val_mask(&state->psscr_val, + &state->psscr_mask, + state->flags); if (err) { - report_invalid_psscr_val(psscr_val[i], err); + report_invalid_psscr_val(state->psscr_val, err); continue; } - if (max_residency_ns < residency_ns[i]) { - max_residency_ns = residency_ns[i]; - pnv_deepest_stop_psscr_val = psscr_val[i]; - pnv_deepest_stop_psscr_mask = psscr_mask[i]; - pnv_deepest_stop_flag = flags[i]; + state->valid = true; + + if (max_residency_ns < state->residency_ns) { + max_residency_ns = state->residency_ns; + pnv_deepest_stop_psscr_val = state->psscr_val; + pnv_deepest_stop_psscr_mask = state->psscr_mask; + pnv_deepest_stop_flag = state->flags; deepest_stop_found = true; } if (!default_stop_found && - (flags[i] & OPAL_PM_STOP_INST_FAST)) { - pnv_default_stop_val = psscr_val[i]; - pnv_default_stop_mask = psscr_mask[i]; + (state->flags & OPAL_PM_STOP_INST_FAST)) { + pnv_default_stop_val = state->psscr_val; + pnv_default_stop_mask = state->psscr_mask; default_stop_found = true; } } @@ -728,11 +691,8 @@ static int __init pnv_power9_idle_init(struct device_node *np, u32 *flags, pr_info("cpuidle-powernv: Requested Level (RL) value of first deep stop = 0x%llx\n", pnv_first_deep_stop_state); -out: - kfree(psscr_val); - kfree(psscr_mask); - kfree(residency_ns); - return rc; + + return 0; } /* @@ -740,50 +700,146 @@ out: */ static void __init pnv_probe_idle_states(void) { - struct device_node *np; - int dt_idle_states; - u32 *flags = NULL; int i; + if (nr_pnv_idle_states < 0) { + pr_warn("cpuidle-powernv: no idle states found in the DT\n"); + return; + } + + if (cpu_has_feature(CPU_FTR_ARCH_300)) { + if (pnv_power9_idle_init()) + return; + } + + for (i = 0; i < nr_pnv_idle_states; i++) + supported_cpuidle_states |= pnv_idle_states[i].flags; +} + +/* + * This function parses device-tree and populates all the information + * into pnv_idle_states structure. It also sets up nr_pnv_idle_states + * which is the number of cpuidle states discovered through device-tree. + */ + +static int pnv_parse_cpuidle_dt(void) +{ + struct device_node *np; + int nr_idle_states, i; + int rc = 0; + u32 *temp_u32; + u64 *temp_u64; + const char **temp_string; + np = of_find_node_by_path("/ibm,opal/power-mgt"); if (!np) { pr_warn("opal: PowerMgmt Node not found\n"); - goto out; + return -ENODEV; } - dt_idle_states = of_property_count_u32_elems(np, - "ibm,cpu-idle-state-flags"); - if (dt_idle_states < 0) { - pr_warn("cpuidle-powernv: no idle states found in the DT\n"); + nr_idle_states = of_property_count_u32_elems(np, + "ibm,cpu-idle-state-flags"); + + pnv_idle_states = kcalloc(nr_idle_states, sizeof(*pnv_idle_states), + GFP_KERNEL); + temp_u32 = kcalloc(nr_idle_states, sizeof(u32), GFP_KERNEL); + temp_u64 = kcalloc(nr_idle_states, sizeof(u64), GFP_KERNEL); + temp_string = kcalloc(nr_idle_states, sizeof(char *), GFP_KERNEL); + + if (!(pnv_idle_states && temp_u32 && temp_u64 && temp_string)) { + pr_err("Could not allocate memory for dt parsing\n"); + rc = -ENOMEM; goto out; } - flags = kcalloc(dt_idle_states, sizeof(*flags), GFP_KERNEL); - - if (of_property_read_u32_array(np, - "ibm,cpu-idle-state-flags", flags, dt_idle_states)) { + /* Read flags */ + if (of_property_read_u32_array(np, "ibm,cpu-idle-state-flags", + temp_u32, nr_idle_states)) { pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-flags in DT\n"); + rc = -EINVAL; + goto out; + } + for (i = 0; i < nr_idle_states; i++) + pnv_idle_states[i].flags = temp_u32[i]; + + /* Read latencies */ + if (of_property_read_u32_array(np, "ibm,cpu-idle-state-latencies-ns", + temp_u32, nr_idle_states)) { + pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-latencies-ns in DT\n"); + rc = -EINVAL; + goto out; + } + for (i = 0; i < nr_idle_states; i++) + pnv_idle_states[i].latency_ns = temp_u32[i]; + + /* Read residencies */ + if (of_property_read_u32_array(np, "ibm,cpu-idle-state-residency-ns", + temp_u32, nr_idle_states)) { + pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-latencies-ns in DT\n"); + rc = -EINVAL; goto out; } + for (i = 0; i < nr_idle_states; i++) + pnv_idle_states[i].residency_ns = temp_u32[i]; + /* For power9 */ if (cpu_has_feature(CPU_FTR_ARCH_300)) { - if (pnv_power9_idle_init(np, flags, dt_idle_states)) + /* Read pm_crtl_val */ + if (of_property_read_u64_array(np, "ibm,cpu-idle-state-psscr", + temp_u64, nr_idle_states)) { + pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr in DT\n"); + rc = -EINVAL; + goto out; + } + for (i = 0; i < nr_idle_states; i++) + pnv_idle_states[i].psscr_val = temp_u64[i]; + + /* Read pm_crtl_mask */ + if (of_property_read_u64_array(np, "ibm,cpu-idle-state-psscr-mask", + temp_u64, nr_idle_states)) { + pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr-mask in DT\n"); + rc = -EINVAL; goto out; + } + for (i = 0; i < nr_idle_states; i++) + pnv_idle_states[i].psscr_mask = temp_u64[i]; } - for (i = 0; i < dt_idle_states; i++) - supported_cpuidle_states |= flags[i]; + /* + * power8 specific properties ibm,cpu-idle-state-pmicr-mask and + * ibm,cpu-idle-state-pmicr-val were never used and there is no + * plan to use it in near future. Hence, not parsing these properties + */ + if (of_property_read_string_array(np, "ibm,cpu-idle-state-names", + temp_string, nr_idle_states) < 0) { + pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-names in DT\n"); + rc = -EINVAL; + goto out; + } + for (i = 0; i < nr_idle_states; i++) + strlcpy(pnv_idle_states[i].name, temp_string[i], + PNV_IDLE_NAME_LEN); + nr_pnv_idle_states = nr_idle_states; + rc = 0; out: - kfree(flags); + kfree(temp_u32); + kfree(temp_u64); + kfree(temp_string); + return rc; } + static int __init pnv_init_idle_states(void) { - + int rc = 0; supported_cpuidle_states = 0; + /* In case we error out nr_pnv_idle_states will be zero */ + nr_pnv_idle_states = 0; if (cpuidle_disable != IDLE_NO_OVERRIDE) goto out; - + rc = pnv_parse_cpuidle_dt(); + if (rc) + return rc; pnv_probe_idle_states(); if (!(supported_cpuidle_states & OPAL_PM_SLEEP_ENABLED_ER1)) { @@ -805,29 +861,6 @@ static int __init pnv_init_idle_states(void) pnv_alloc_idle_core_states(); - /* - * For each CPU, record its PACA address in each of it's - * sibling thread's PACA at the slot corresponding to this - * CPU's index in the core. - */ - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { - int cpu; - - pr_info("powernv: idle: Saving PACA pointers of all CPUs in their thread sibling PACA\n"); - for_each_present_cpu(cpu) { - int base_cpu = cpu_first_thread_sibling(cpu); - int idx = cpu_thread_in_core(cpu); - int i; - - for (i = 0; i < threads_per_core; i++) { - int j = base_cpu + i; - - paca_ptrs[j]->thread_sibling_pacas[idx] = - paca_ptrs[cpu]; - } - } - } - if (supported_cpuidle_states & OPAL_PM_NAP_ENABLED) ppc_md.power_save = power7_idle; diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index b99283df8584..51dc398ae3f7 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -47,38 +47,9 @@ static ssize_t memtrace_read(struct file *filp, char __user *ubuf, return simple_read_from_buffer(ubuf, count, ppos, ent->mem, ent->size); } -static bool valid_memtrace_range(struct memtrace_entry *dev, - unsigned long start, unsigned long size) -{ - if ((start >= dev->start) && - ((start + size) <= (dev->start + dev->size))) - return true; - - return false; -} - -static int memtrace_mmap(struct file *filp, struct vm_area_struct *vma) -{ - unsigned long size = vma->vm_end - vma->vm_start; - struct memtrace_entry *dev = filp->private_data; - - if (!valid_memtrace_range(dev, vma->vm_pgoff << PAGE_SHIFT, size)) - return -EINVAL; - - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - if (remap_pfn_range(vma, vma->vm_start, - vma->vm_pgoff + (dev->start >> PAGE_SHIFT), - size, vma->vm_page_prot)) - return -EAGAIN; - - return 0; -} - static const struct file_operations memtrace_fops = { .llseek = default_llseek, .read = memtrace_read, - .mmap = memtrace_mmap, .open = simple_open, }; @@ -206,8 +177,11 @@ static int memtrace_init_debugfs(void) snprintf(ent->name, 16, "%08x", ent->nid); dir = debugfs_create_dir(ent->name, memtrace_debugfs_dir); - if (!dir) + if (!dir) { + pr_err("Failed to create debugfs directory for node %d\n", + ent->nid); return -1; + } ent->dir = dir; debugfs_create_file("trace", 0400, dir, ent, &memtrace_fops); @@ -218,18 +192,93 @@ static int memtrace_init_debugfs(void) return ret; } +static int online_mem_block(struct memory_block *mem, void *arg) +{ + return device_online(&mem->dev); +} + +/* + * Iterate through the chunks of memory we have removed from the kernel + * and attempt to add them back to the kernel. + */ +static int memtrace_online(void) +{ + int i, ret = 0; + struct memtrace_entry *ent; + + for (i = memtrace_array_nr - 1; i >= 0; i--) { + ent = &memtrace_array[i]; + + /* We have onlined this chunk previously */ + if (ent->nid == -1) + continue; + + /* Remove from io mappings */ + if (ent->mem) { + iounmap(ent->mem); + ent->mem = 0; + } + + if (add_memory(ent->nid, ent->start, ent->size)) { + pr_err("Failed to add trace memory to node %d\n", + ent->nid); + ret += 1; + continue; + } + + /* + * If kernel isn't compiled with the auto online option + * we need to online the memory ourselves. + */ + if (!memhp_auto_online) { + walk_memory_range(PFN_DOWN(ent->start), + PFN_UP(ent->start + ent->size - 1), + NULL, online_mem_block); + } + + /* + * Memory was added successfully so clean up references to it + * so on reentry we can tell that this chunk was added. + */ + debugfs_remove_recursive(ent->dir); + pr_info("Added trace memory back to node %d\n", ent->nid); + ent->size = ent->start = ent->nid = -1; + } + if (ret) + return ret; + + /* If all chunks of memory were added successfully, reset globals */ + kfree(memtrace_array); + memtrace_array = NULL; + memtrace_size = 0; + memtrace_array_nr = 0; + return 0; +} + static int memtrace_enable_set(void *data, u64 val) { - if (memtrace_size) + u64 bytes; + + /* + * Don't attempt to do anything if size isn't aligned to a memory + * block or equal to zero. + */ + bytes = memory_block_size_bytes(); + if (val & (bytes - 1)) { + pr_err("Value must be aligned with 0x%llx\n", bytes); return -EINVAL; + } - if (!val) - return -EINVAL; + /* Re-add/online previously removed/offlined memory */ + if (memtrace_size) { + if (memtrace_online()) + return -EAGAIN; + } - /* Make sure size is aligned to a memory block */ - if (val & (memory_block_size_bytes() - 1)) - return -EINVAL; + if (!val) + return 0; + /* Offline and remove memory */ if (memtrace_init_regions_runtime(val)) return -EINVAL; diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index 8cdf91f5d3a4..8006c54a91e3 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -17,7 +17,9 @@ #include <linux/pci.h> #include <linux/memblock.h> #include <linux/iommu.h> +#include <linux/debugfs.h> +#include <asm/debugfs.h> #include <asm/tlb.h> #include <asm/powernv.h> #include <asm/reg.h> @@ -44,7 +46,8 @@ static DEFINE_SPINLOCK(npu_context_lock); * entire TLB on the GPU for the given PID rather than each specific address in * the range. */ -#define ATSD_THRESHOLD (2*1024*1024) +static uint64_t atsd_threshold = 2 * 1024 * 1024; +static struct dentry *atsd_threshold_dentry; /* * Other types of TCE cache invalidation are not functional in the @@ -437,8 +440,9 @@ static int get_mmio_atsd_reg(struct npu *npu) int i; for (i = 0; i < npu->mmio_atsd_count; i++) { - if (!test_and_set_bit_lock(i, &npu->mmio_atsd_usage)) - return i; + if (!test_bit(i, &npu->mmio_atsd_usage)) + if (!test_and_set_bit_lock(i, &npu->mmio_atsd_usage)) + return i; } return -ENOSPC; @@ -683,7 +687,7 @@ static void pnv_npu2_mn_invalidate_range(struct mmu_notifier *mn, struct npu_context *npu_context = mn_to_npu_context(mn); unsigned long address; - if (end - start > ATSD_THRESHOLD) { + if (end - start > atsd_threshold) { /* * Just invalidate the entire PID if the address range is too * large. @@ -958,6 +962,11 @@ int pnv_npu2_init(struct pnv_phb *phb) static int npu_index; uint64_t rc = 0; + if (!atsd_threshold_dentry) { + atsd_threshold_dentry = debugfs_create_x64("atsd_threshold", + 0600, powerpc_debugfs_root, &atsd_threshold); + } + phb->npu.nmmu_flush = of_property_read_bool(phb->hose->dn, "ibm,nmmu-flush"); for_each_child_of_node(phb->hose->dn, dn) { diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index 0dc8fa4e0af2..198143833f00 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -225,13 +225,16 @@ static int64_t dump_read_info(uint32_t *dump_id, uint32_t *dump_size, uint32_t * if (rc == OPAL_PARAMETER) rc = opal_dump_info(&id, &size); + if (rc) { + pr_warn("%s: Failed to get dump info (%d)\n", + __func__, rc); + return rc; + } + *dump_id = be32_to_cpu(id); *dump_size = be32_to_cpu(size); *dump_type = be32_to_cpu(type); - if (rc) - pr_warn("%s: Failed to get dump info (%d)\n", - __func__, rc); return rc; } @@ -368,13 +371,12 @@ static irqreturn_t process_dump(int irq, void *data) { int rc; uint32_t dump_id, dump_size, dump_type; - struct dump_obj *dump; char name[22]; struct kobject *kobj; rc = dump_read_info(&dump_id, &dump_size, &dump_type); if (rc != OPAL_SUCCESS) - return rc; + return IRQ_HANDLED; sprintf(name, "0x%x-0x%x", dump_type, dump_id); @@ -386,12 +388,10 @@ static irqreturn_t process_dump(int irq, void *data) if (kobj) { /* Drop reference added by kset_find_obj() */ kobject_put(kobj); - return 0; + return IRQ_HANDLED; } - dump = create_dump_obj(dump_id, dump_size, dump_type); - if (!dump) - return -1; + create_dump_obj(dump_id, dump_size, dump_type); return IRQ_HANDLED; } diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c index 605c7e5d52c2..bc97770a67db 100644 --- a/arch/powerpc/platforms/powernv/opal-irqchip.c +++ b/arch/powerpc/platforms/powernv/opal-irqchip.c @@ -22,6 +22,7 @@ #include <linux/kthread.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/of_irq.h> #include <asm/machdep.h> #include <asm/opal.h> @@ -38,8 +39,8 @@ struct opal_event_irqchip { }; static struct opal_event_irqchip opal_event_irqchip; static u64 last_outstanding_events; -static unsigned int opal_irq_count; -static unsigned int *opal_irqs; +static int opal_irq_count; +static struct resource *opal_irqs; void opal_handle_events(void) { @@ -165,24 +166,23 @@ void opal_event_shutdown(void) /* First free interrupts, which will also mask them */ for (i = 0; i < opal_irq_count; i++) { - if (!opal_irqs[i]) + if (!opal_irqs || !opal_irqs[i].start) continue; if (in_interrupt() || irqs_disabled()) - disable_irq_nosync(opal_irqs[i]); + disable_irq_nosync(opal_irqs[i].start); else - free_irq(opal_irqs[i], NULL); + free_irq(opal_irqs[i].start, NULL); - opal_irqs[i] = 0; + opal_irqs[i].start = 0; } } int __init opal_event_init(void) { struct device_node *dn, *opal_node; - const char **names; - u32 *irqs; - int i, rc; + bool old_style = false; + int i, rc = 0; opal_node = of_find_node_by_path("/ibm,opal"); if (!opal_node) { @@ -207,67 +207,91 @@ int __init opal_event_init(void) goto out; } - /* Get opal-interrupts property and names if present */ - rc = of_property_count_u32_elems(opal_node, "opal-interrupts"); - if (rc < 0) - goto out; + /* Look for new-style (standard) "interrupts" property */ + opal_irq_count = of_irq_count(opal_node); - opal_irq_count = rc; - pr_debug("Found %d interrupts reserved for OPAL\n", opal_irq_count); + /* Absent ? Look for the old one */ + if (opal_irq_count < 1) { + /* Get opal-interrupts property and names if present */ + rc = of_property_count_u32_elems(opal_node, "opal-interrupts"); + if (rc > 0) + opal_irq_count = rc; + old_style = true; + } - irqs = kcalloc(opal_irq_count, sizeof(*irqs), GFP_KERNEL); - names = kcalloc(opal_irq_count, sizeof(*names), GFP_KERNEL); - opal_irqs = kcalloc(opal_irq_count, sizeof(*opal_irqs), GFP_KERNEL); + /* No interrupts ? Bail out */ + if (!opal_irq_count) + goto out; - if (WARN_ON(!irqs || !names || !opal_irqs)) - goto out_free; + pr_debug("OPAL: Found %d interrupts reserved for OPAL using %s scheme\n", + opal_irq_count, old_style ? "old" : "new"); - rc = of_property_read_u32_array(opal_node, "opal-interrupts", - irqs, opal_irq_count); - if (rc < 0) { - pr_err("Error %d reading opal-interrupts array\n", rc); - goto out_free; + /* Allocate an IRQ resources array */ + opal_irqs = kcalloc(opal_irq_count, sizeof(struct resource), GFP_KERNEL); + if (WARN_ON(!opal_irqs)) { + rc = -ENOMEM; + goto out; } - /* It's not an error for the names to be missing */ - of_property_read_string_array(opal_node, "opal-interrupts-names", - names, opal_irq_count); + /* Build the resources array */ + if (old_style) { + /* Old style "opal-interrupts" property */ + for (i = 0; i < opal_irq_count; i++) { + struct resource *r = &opal_irqs[i]; + const char *name = NULL; + u32 hw_irq; + int virq; + + rc = of_property_read_u32_index(opal_node, "opal-interrupts", + i, &hw_irq); + if (WARN_ON(rc < 0)) { + opal_irq_count = i; + break; + } + of_property_read_string_index(opal_node, "opal-interrupts-names", + i, &name); + virq = irq_create_mapping(NULL, hw_irq); + if (!virq) { + pr_warn("Failed to map OPAL irq 0x%x\n", hw_irq); + continue; + } + r->start = r->end = virq; + r->flags = IORESOURCE_IRQ | IRQ_TYPE_LEVEL_LOW; + r->name = name; + } + } else { + /* new style standard "interrupts" property */ + rc = of_irq_to_resource_table(opal_node, opal_irqs, opal_irq_count); + if (WARN_ON(rc < 0)) { + opal_irq_count = 0; + kfree(opal_irqs); + goto out; + } + if (WARN_ON(rc < opal_irq_count)) + opal_irq_count = rc; + } /* Install interrupt handlers */ for (i = 0; i < opal_irq_count; i++) { - unsigned int virq; - char *name; - - /* Get hardware and virtual IRQ */ - virq = irq_create_mapping(NULL, irqs[i]); - if (!virq) { - pr_warn("Failed to map irq 0x%x\n", irqs[i]); - continue; - } + struct resource *r = &opal_irqs[i]; + const char *name; - if (names[i] && strlen(names[i])) - name = kasprintf(GFP_KERNEL, "opal-%s", names[i]); + /* Prefix name */ + if (r->name && strlen(r->name)) + name = kasprintf(GFP_KERNEL, "opal-%s", r->name); else name = kasprintf(GFP_KERNEL, "opal"); /* Install interrupt handler */ - rc = request_irq(virq, opal_interrupt, IRQF_TRIGGER_LOW, + rc = request_irq(r->start, opal_interrupt, r->flags & IRQD_TRIGGER_MASK, name, NULL); if (rc) { - irq_dispose_mapping(virq); - pr_warn("Error %d requesting irq %d (0x%x)\n", - rc, virq, irqs[i]); + pr_warn("Error %d requesting OPAL irq %d\n", rc, (int)r->start); continue; } - - /* Cache IRQ */ - opal_irqs[i] = virq; } - -out_free: - kfree(irqs); - kfree(names); -out: + rc = 0; + out: of_node_put(opal_node); return rc; } diff --git a/arch/powerpc/platforms/powernv/opal-kmsg.c b/arch/powerpc/platforms/powernv/opal-kmsg.c index 6f1214d4de92..55691950d981 100644 --- a/arch/powerpc/platforms/powernv/opal-kmsg.c +++ b/arch/powerpc/platforms/powernv/opal-kmsg.c @@ -23,12 +23,9 @@ * may not be completely printed. This function does not actually dump the * message, it just ensures that OPAL completely flushes the console buffer. */ -static void force_opal_console_flush(struct kmsg_dumper *dumper, +static void kmsg_dump_opal_console_flush(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason) { - int i; - int64_t ret; - /* * Outside of a panic context the pollers will continue to run, * so we don't need to do any special flushing. @@ -36,32 +33,11 @@ static void force_opal_console_flush(struct kmsg_dumper *dumper, if (reason != KMSG_DUMP_PANIC) return; - if (opal_check_token(OPAL_CONSOLE_FLUSH)) { - ret = opal_console_flush(0); - - if (ret == OPAL_UNSUPPORTED || ret == OPAL_PARAMETER) - return; - - /* Incrementally flush until there's nothing left */ - while (opal_console_flush(0) != OPAL_SUCCESS); - } else { - /* - * If OPAL_CONSOLE_FLUSH is not implemented in the firmware, - * the console can still be flushed by calling the polling - * function enough times to flush the buffer. We don't know - * how much output still needs to be flushed, but we can be - * generous since the kernel is in panic and doesn't need - * to do much else. - */ - printk(KERN_NOTICE "opal: OPAL_CONSOLE_FLUSH missing.\n"); - for (i = 0; i < 1024; i++) { - opal_poll_events(NULL); - } - } + opal_flush_console(0); } static struct kmsg_dumper opal_kmsg_dumper = { - .dump = force_opal_console_flush + .dump = kmsg_dump_opal_console_flush }; void __init opal_kmsg_init(void) diff --git a/arch/powerpc/platforms/powernv/opal-sensor-groups.c b/arch/powerpc/platforms/powernv/opal-sensor-groups.c index 541c9ea04a32..f7d04b6a2d7a 100644 --- a/arch/powerpc/platforms/powernv/opal-sensor-groups.c +++ b/arch/powerpc/platforms/powernv/opal-sensor-groups.c @@ -32,6 +32,34 @@ static struct sensor_group { struct sg_attr *sgattrs; } *sgs; +int sensor_group_enable(u32 handle, bool enable) +{ + struct opal_msg msg; + int token, ret; + + token = opal_async_get_token_interruptible(); + if (token < 0) + return token; + + ret = opal_sensor_group_enable(handle, token, enable); + if (ret == OPAL_ASYNC_COMPLETION) { + ret = opal_async_wait_response(token, &msg); + if (ret) { + pr_devel("Failed to wait for the async response\n"); + ret = -EIO; + goto out; + } + ret = opal_error_code(opal_get_async_rc(msg)); + } else { + ret = opal_error_code(ret); + } + +out: + opal_async_release_token(token); + return ret; +} +EXPORT_SYMBOL_GPL(sensor_group_enable); + static ssize_t sg_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index a8d9b4089c31..251528231a9e 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -14,6 +14,8 @@ #include <asm/hvcall.h> #include <asm/asm-offsets.h> #include <asm/opal.h> +#include <asm/asm-compat.h> +#include <asm/feature-fixups.h> .section ".text" @@ -327,3 +329,5 @@ OPAL_CALL(opal_npu_tl_set, OPAL_NPU_TL_SET); OPAL_CALL(opal_pci_get_pbcq_tunnel_bar, OPAL_PCI_GET_PBCQ_TUNNEL_BAR); OPAL_CALL(opal_pci_set_pbcq_tunnel_bar, OPAL_PCI_SET_PBCQ_TUNNEL_BAR); OPAL_CALL(opal_sensor_read_u64, OPAL_SENSOR_READ_U64); +OPAL_CALL(opal_sensor_group_enable, OPAL_SENSOR_GROUP_ENABLE); +OPAL_CALL(opal_nx_coproc_init, OPAL_NX_COPROC_INIT); diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 0d539c661748..404c379db168 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -344,70 +344,125 @@ int opal_get_chars(uint32_t vtermno, char *buf, int count) return 0; } -int opal_put_chars(uint32_t vtermno, const char *data, int total_len) +static int __opal_put_chars(uint32_t vtermno, const char *data, int total_len, bool atomic) { - int written = 0; + unsigned long flags = 0 /* shut up gcc */; + int written; __be64 olen; - s64 len, rc; - unsigned long flags; - __be64 evt; + s64 rc; if (!opal.entry) return -ENODEV; - /* We want put_chars to be atomic to avoid mangling of hvsi - * packets. To do that, we first test for room and return - * -EAGAIN if there isn't enough. - * - * Unfortunately, opal_console_write_buffer_space() doesn't - * appear to work on opal v1, so we just assume there is - * enough room and be done with it - */ - spin_lock_irqsave(&opal_write_lock, flags); + if (atomic) + spin_lock_irqsave(&opal_write_lock, flags); rc = opal_console_write_buffer_space(vtermno, &olen); - len = be64_to_cpu(olen); - if (rc || len < total_len) { - spin_unlock_irqrestore(&opal_write_lock, flags); + if (rc || be64_to_cpu(olen) < total_len) { /* Closed -> drop characters */ if (rc) - return total_len; - opal_poll_events(NULL); - return -EAGAIN; + written = total_len; + else + written = -EAGAIN; + goto out; } - /* We still try to handle partial completions, though they - * should no longer happen. - */ - rc = OPAL_BUSY; - while(total_len > 0 && (rc == OPAL_BUSY || - rc == OPAL_BUSY_EVENT || rc == OPAL_SUCCESS)) { - olen = cpu_to_be64(total_len); - rc = opal_console_write(vtermno, &olen, data); - len = be64_to_cpu(olen); - - /* Closed or other error drop */ - if (rc != OPAL_SUCCESS && rc != OPAL_BUSY && - rc != OPAL_BUSY_EVENT) { - written = total_len; - break; + /* Should not get a partial write here because space is available. */ + olen = cpu_to_be64(total_len); + rc = opal_console_write(vtermno, &olen, data); + if (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { + if (rc == OPAL_BUSY_EVENT) { + mdelay(OPAL_BUSY_DELAY_MS); + opal_poll_events(NULL); + } else if (rc == OPAL_BUSY_EVENT) { + mdelay(OPAL_BUSY_DELAY_MS); } - if (rc == OPAL_SUCCESS) { - total_len -= len; - data += len; - written += len; + written = -EAGAIN; + goto out; + } + + /* Closed or other error drop */ + if (rc != OPAL_SUCCESS) { + written = opal_error_code(rc); + goto out; + } + + written = be64_to_cpu(olen); + if (written < total_len) { + if (atomic) { + /* Should not happen */ + pr_warn("atomic console write returned partial " + "len=%d written=%d\n", total_len, written); } - /* This is a bit nasty but we need that for the console to - * flush when there aren't any interrupts. We will clean - * things a bit later to limit that to synchronous path - * such as the kernel console and xmon/udbg + if (!written) + written = -EAGAIN; + } + +out: + if (atomic) + spin_unlock_irqrestore(&opal_write_lock, flags); + + /* In the -EAGAIN case, callers loop, so we have to flush the console + * here in case they have interrupts off (and we don't want to wait + * for async flushing if we can make immediate progress here). If + * necessary the API could be made entirely non-flushing if the + * callers had a ->flush API to use. + */ + if (written == -EAGAIN) + opal_flush_console(vtermno); + + return written; +} + +int opal_put_chars(uint32_t vtermno, const char *data, int total_len) +{ + return __opal_put_chars(vtermno, data, total_len, false); +} + +/* + * opal_put_chars_atomic will not perform partial-writes. Data will be + * atomically written to the terminal or not at all. This is not strictly + * true at the moment because console space can race with OPAL's console + * writes. + */ +int opal_put_chars_atomic(uint32_t vtermno, const char *data, int total_len) +{ + return __opal_put_chars(vtermno, data, total_len, true); +} + +int opal_flush_console(uint32_t vtermno) +{ + s64 rc; + + if (!opal_check_token(OPAL_CONSOLE_FLUSH)) { + __be64 evt; + + WARN_ONCE(1, "opal: OPAL_CONSOLE_FLUSH missing.\n"); + /* + * If OPAL_CONSOLE_FLUSH is not implemented in the firmware, + * the console can still be flushed by calling the polling + * function while it has OPAL_EVENT_CONSOLE_OUTPUT events. */ - do + do { opal_poll_events(&evt); - while(rc == OPAL_SUCCESS && - (be64_to_cpu(evt) & OPAL_EVENT_CONSOLE_OUTPUT)); + } while (be64_to_cpu(evt) & OPAL_EVENT_CONSOLE_OUTPUT); + + return OPAL_SUCCESS; } - spin_unlock_irqrestore(&opal_write_lock, flags); - return written; + + do { + rc = OPAL_BUSY; + while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { + rc = opal_console_flush(vtermno); + if (rc == OPAL_BUSY_EVENT) { + mdelay(OPAL_BUSY_DELAY_MS); + opal_poll_events(NULL); + } else if (rc == OPAL_BUSY) { + mdelay(OPAL_BUSY_DELAY_MS); + } + } + } while (rc == OPAL_PARTIAL); /* More to flush */ + + return opal_error_code(rc); } static int opal_recover_mce(struct pt_regs *regs, @@ -922,6 +977,7 @@ EXPORT_SYMBOL_GPL(opal_flash_read); EXPORT_SYMBOL_GPL(opal_flash_write); EXPORT_SYMBOL_GPL(opal_flash_erase); EXPORT_SYMBOL_GPL(opal_prd_msg); +EXPORT_SYMBOL_GPL(opal_check_token); /* Convert a region of vmalloc memory to an opal sg list */ struct opal_sg_list *opal_vmalloc_to_sg_list(void *vmalloc_addr, @@ -1034,3 +1090,5 @@ EXPORT_SYMBOL_GPL(opal_write_oppanel_async); EXPORT_SYMBOL_GPL(opal_int_set_mfrr); EXPORT_SYMBOL_GPL(opal_int_eoi); EXPORT_SYMBOL_GPL(opal_error_code); +/* Export the below symbol for NX compression */ +EXPORT_SYMBOL(opal_nx_coproc_init); diff --git a/arch/powerpc/platforms/powernv/pci-cxl.c b/arch/powerpc/platforms/powernv/pci-cxl.c index cee003de63af..1b18111453d7 100644 --- a/arch/powerpc/platforms/powernv/pci-cxl.c +++ b/arch/powerpc/platforms/powernv/pci-cxl.c @@ -8,11 +8,8 @@ */ #include <linux/module.h> -#include <linux/msi.h> -#include <asm/pci-bridge.h> #include <asm/pnv-pci.h> #include <asm/opal.h> -#include <misc/cxl.h> #include "pci.h" @@ -179,199 +176,3 @@ static inline int get_cxl_module(void) #else static inline int get_cxl_module(void) { return 0; } #endif - -/* - * Sets flags and switches the controller ops to enable the cxl kernel api. - * Originally the cxl kernel API operated on a virtual PHB, but certain cards - * such as the Mellanox CX4 use a peer model instead and for these cards the - * cxl kernel api will operate on the real PHB. - */ -int pnv_cxl_enable_phb_kernel_api(struct pci_controller *hose, bool enable) -{ - struct pnv_phb *phb = hose->private_data; - int rc; - - if (!enable) { - /* - * Once cxl mode is enabled on the PHB, there is currently no - * known safe method to disable it again, and trying risks a - * checkstop. If we can find a way to safely disable cxl mode - * in the future we can revisit this, but for now the only sane - * thing to do is to refuse to disable cxl mode: - */ - return -EPERM; - } - - /* - * Hold a reference to the cxl module since several PHB operations now - * depend on it, and it would be insane to allow it to be removed so - * long as we are in this mode (and since we can't safely disable this - * mode once enabled...). - */ - rc = get_cxl_module(); - if (rc) - return rc; - - phb->flags |= PNV_PHB_FLAG_CXL; - hose->controller_ops = pnv_cxl_cx4_ioda_controller_ops; - - return 0; -} -EXPORT_SYMBOL_GPL(pnv_cxl_enable_phb_kernel_api); - -bool pnv_pci_on_cxl_phb(struct pci_dev *dev) -{ - struct pci_controller *hose = pci_bus_to_host(dev->bus); - struct pnv_phb *phb = hose->private_data; - - return !!(phb->flags & PNV_PHB_FLAG_CXL); -} -EXPORT_SYMBOL_GPL(pnv_pci_on_cxl_phb); - -struct cxl_afu *pnv_cxl_phb_to_afu(struct pci_controller *hose) -{ - struct pnv_phb *phb = hose->private_data; - - return (struct cxl_afu *)phb->cxl_afu; -} -EXPORT_SYMBOL_GPL(pnv_cxl_phb_to_afu); - -void pnv_cxl_phb_set_peer_afu(struct pci_dev *dev, struct cxl_afu *afu) -{ - struct pci_controller *hose = pci_bus_to_host(dev->bus); - struct pnv_phb *phb = hose->private_data; - - phb->cxl_afu = afu; -} -EXPORT_SYMBOL_GPL(pnv_cxl_phb_set_peer_afu); - -/* - * In the peer cxl model, the XSL/PSL is physical function 0, and will be used - * by other functions on the device for memory access and interrupts. When the - * other functions are enabled we explicitly take a reference on the cxl - * function since they will use it, and allocate a default context associated - * with that function just like the vPHB model of the cxl kernel API. - */ -bool pnv_cxl_enable_device_hook(struct pci_dev *dev) -{ - struct pci_controller *hose = pci_bus_to_host(dev->bus); - struct pnv_phb *phb = hose->private_data; - struct cxl_afu *afu = phb->cxl_afu; - - if (!pnv_pci_enable_device_hook(dev)) - return false; - - - /* No special handling for the cxl function, which is always PF 0 */ - if (PCI_FUNC(dev->devfn) == 0) - return true; - - if (!afu) { - dev_WARN(&dev->dev, "Attempted to enable function > 0 on CXL PHB without a peer AFU\n"); - return false; - } - - dev_info(&dev->dev, "Enabling function on CXL enabled PHB with peer AFU\n"); - - /* Make sure the peer AFU can't go away while this device is active */ - cxl_afu_get(afu); - - return cxl_pci_associate_default_context(dev, afu); -} - -void pnv_cxl_disable_device(struct pci_dev *dev) -{ - struct pci_controller *hose = pci_bus_to_host(dev->bus); - struct pnv_phb *phb = hose->private_data; - struct cxl_afu *afu = phb->cxl_afu; - - /* No special handling for cxl function: */ - if (PCI_FUNC(dev->devfn) == 0) - return; - - cxl_pci_disable_device(dev); - cxl_afu_put(afu); -} - -/* - * This is a special version of pnv_setup_msi_irqs for cards in cxl mode. This - * function handles setting up the IVTE entries for the XSL to use. - * - * We are currently not filling out the MSIX table, since the only currently - * supported adapter (CX4) uses a custom MSIX table format in cxl mode and it - * is up to their driver to fill that out. In the future we may fill out the - * MSIX table (and change the IVTE entries to be an index to the MSIX table) - * for adapters implementing the Full MSI-X mode described in the CAIA. - */ -int pnv_cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) -{ - struct pci_controller *hose = pci_bus_to_host(pdev->bus); - struct pnv_phb *phb = hose->private_data; - struct msi_desc *entry; - struct cxl_context *ctx = NULL; - unsigned int virq; - int hwirq; - int afu_irq = 0; - int rc; - - if (WARN_ON(!phb) || !phb->msi_bmp.bitmap) - return -ENODEV; - - if (pdev->no_64bit_msi && !phb->msi32_support) - return -ENODEV; - - rc = cxl_cx4_setup_msi_irqs(pdev, nvec, type); - if (rc) - return rc; - - for_each_pci_msi_entry(entry, pdev) { - if (!entry->msi_attrib.is_64 && !phb->msi32_support) { - pr_warn("%s: Supports only 64-bit MSIs\n", - pci_name(pdev)); - return -ENXIO; - } - - hwirq = cxl_next_msi_hwirq(pdev, &ctx, &afu_irq); - if (WARN_ON(hwirq <= 0)) - return (hwirq ? hwirq : -ENOMEM); - - virq = irq_create_mapping(NULL, hwirq); - if (!virq) { - pr_warn("%s: Failed to map cxl mode MSI to linux irq\n", - pci_name(pdev)); - return -ENOMEM; - } - - rc = pnv_cxl_ioda_msi_setup(pdev, hwirq, virq); - if (rc) { - pr_warn("%s: Failed to setup cxl mode MSI\n", pci_name(pdev)); - irq_dispose_mapping(virq); - return rc; - } - - irq_set_msi_desc(virq, entry); - } - - return 0; -} - -void pnv_cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev) -{ - struct pci_controller *hose = pci_bus_to_host(pdev->bus); - struct pnv_phb *phb = hose->private_data; - struct msi_desc *entry; - irq_hw_number_t hwirq; - - if (WARN_ON(!phb)) - return; - - for_each_pci_msi_entry(entry, pdev) { - if (!entry->irq) - continue; - hwirq = virq_to_hw(entry->irq); - irq_set_msi_desc(entry->irq, NULL); - irq_dispose_mapping(entry->irq); - } - - cxl_cx4_teardown_msi_irqs(pdev); -} diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c b/arch/powerpc/platforms/powernv/pci-ioda-tce.c new file mode 100644 index 000000000000..6c5db1acbe8d --- /dev/null +++ b/arch/powerpc/platforms/powernv/pci-ioda-tce.c @@ -0,0 +1,399 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * TCE helpers for IODA PCI/PCIe on PowerNV platforms + * + * Copyright 2018 IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/iommu.h> + +#include <asm/iommu.h> +#include <asm/tce.h> +#include "pci.h" + +void pnv_pci_setup_iommu_table(struct iommu_table *tbl, + void *tce_mem, u64 tce_size, + u64 dma_offset, unsigned int page_shift) +{ + tbl->it_blocksize = 16; + tbl->it_base = (unsigned long)tce_mem; + tbl->it_page_shift = page_shift; + tbl->it_offset = dma_offset >> tbl->it_page_shift; + tbl->it_index = 0; + tbl->it_size = tce_size >> 3; + tbl->it_busno = 0; + tbl->it_type = TCE_PCI; +} + +static __be64 *pnv_alloc_tce_level(int nid, unsigned int shift) +{ + struct page *tce_mem = NULL; + __be64 *addr; + + tce_mem = alloc_pages_node(nid, GFP_KERNEL, shift - PAGE_SHIFT); + if (!tce_mem) { + pr_err("Failed to allocate a TCE memory, level shift=%d\n", + shift); + return NULL; + } + addr = page_address(tce_mem); + memset(addr, 0, 1UL << shift); + + return addr; +} + +static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc) +{ + __be64 *tmp = user ? tbl->it_userspace : (__be64 *) tbl->it_base; + int level = tbl->it_indirect_levels; + const long shift = ilog2(tbl->it_level_size); + unsigned long mask = (tbl->it_level_size - 1) << (level * shift); + + while (level) { + int n = (idx & mask) >> (level * shift); + unsigned long tce; + + if (tmp[n] == 0) { + __be64 *tmp2; + + if (!alloc) + return NULL; + + tmp2 = pnv_alloc_tce_level(tbl->it_nid, + ilog2(tbl->it_level_size) + 3); + if (!tmp2) + return NULL; + + tmp[n] = cpu_to_be64(__pa(tmp2) | + TCE_PCI_READ | TCE_PCI_WRITE); + } + tce = be64_to_cpu(tmp[n]); + + tmp = __va(tce & ~(TCE_PCI_READ | TCE_PCI_WRITE)); + idx &= ~mask; + mask >>= shift; + --level; + } + + return tmp + idx; +} + +int pnv_tce_build(struct iommu_table *tbl, long index, long npages, + unsigned long uaddr, enum dma_data_direction direction, + unsigned long attrs) +{ + u64 proto_tce = iommu_direction_to_tce_perm(direction); + u64 rpn = __pa(uaddr) >> tbl->it_page_shift; + long i; + + if (proto_tce & TCE_PCI_WRITE) + proto_tce |= TCE_PCI_READ; + + for (i = 0; i < npages; i++) { + unsigned long newtce = proto_tce | + ((rpn + i) << tbl->it_page_shift); + unsigned long idx = index - tbl->it_offset + i; + + *(pnv_tce(tbl, false, idx, true)) = cpu_to_be64(newtce); + } + + return 0; +} + +#ifdef CONFIG_IOMMU_API +int pnv_tce_xchg(struct iommu_table *tbl, long index, + unsigned long *hpa, enum dma_data_direction *direction, + bool alloc) +{ + u64 proto_tce = iommu_direction_to_tce_perm(*direction); + unsigned long newtce = *hpa | proto_tce, oldtce; + unsigned long idx = index - tbl->it_offset; + __be64 *ptce = NULL; + + BUG_ON(*hpa & ~IOMMU_PAGE_MASK(tbl)); + + if (*direction == DMA_NONE) { + ptce = pnv_tce(tbl, false, idx, false); + if (!ptce) { + *hpa = 0; + return 0; + } + } + + if (!ptce) { + ptce = pnv_tce(tbl, false, idx, alloc); + if (!ptce) + return alloc ? H_HARDWARE : H_TOO_HARD; + } + + if (newtce & TCE_PCI_WRITE) + newtce |= TCE_PCI_READ; + + oldtce = be64_to_cpu(xchg(ptce, cpu_to_be64(newtce))); + *hpa = oldtce & ~(TCE_PCI_READ | TCE_PCI_WRITE); + *direction = iommu_tce_direction(oldtce); + + return 0; +} + +__be64 *pnv_tce_useraddrptr(struct iommu_table *tbl, long index, bool alloc) +{ + if (WARN_ON_ONCE(!tbl->it_userspace)) + return NULL; + + return pnv_tce(tbl, true, index - tbl->it_offset, alloc); +} +#endif + +void pnv_tce_free(struct iommu_table *tbl, long index, long npages) +{ + long i; + + for (i = 0; i < npages; i++) { + unsigned long idx = index - tbl->it_offset + i; + __be64 *ptce = pnv_tce(tbl, false, idx, false); + + if (ptce) + *ptce = cpu_to_be64(0); + } +} + +unsigned long pnv_tce_get(struct iommu_table *tbl, long index) +{ + __be64 *ptce = pnv_tce(tbl, false, index - tbl->it_offset, false); + + if (!ptce) + return 0; + + return be64_to_cpu(*ptce); +} + +static void pnv_pci_ioda2_table_do_free_pages(__be64 *addr, + unsigned long size, unsigned int levels) +{ + const unsigned long addr_ul = (unsigned long) addr & + ~(TCE_PCI_READ | TCE_PCI_WRITE); + + if (levels) { + long i; + u64 *tmp = (u64 *) addr_ul; + + for (i = 0; i < size; ++i) { + unsigned long hpa = be64_to_cpu(tmp[i]); + + if (!(hpa & (TCE_PCI_READ | TCE_PCI_WRITE))) + continue; + + pnv_pci_ioda2_table_do_free_pages(__va(hpa), size, + levels - 1); + } + } + + free_pages(addr_ul, get_order(size << 3)); +} + +void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl) +{ + const unsigned long size = tbl->it_indirect_levels ? + tbl->it_level_size : tbl->it_size; + + if (!tbl->it_size) + return; + + pnv_pci_ioda2_table_do_free_pages((__be64 *)tbl->it_base, size, + tbl->it_indirect_levels); + if (tbl->it_userspace) { + pnv_pci_ioda2_table_do_free_pages(tbl->it_userspace, size, + tbl->it_indirect_levels); + } +} + +static __be64 *pnv_pci_ioda2_table_do_alloc_pages(int nid, unsigned int shift, + unsigned int levels, unsigned long limit, + unsigned long *current_offset, unsigned long *total_allocated) +{ + __be64 *addr, *tmp; + unsigned long allocated = 1UL << shift; + unsigned int entries = 1UL << (shift - 3); + long i; + + addr = pnv_alloc_tce_level(nid, shift); + *total_allocated += allocated; + + --levels; + if (!levels) { + *current_offset += allocated; + return addr; + } + + for (i = 0; i < entries; ++i) { + tmp = pnv_pci_ioda2_table_do_alloc_pages(nid, shift, + levels, limit, current_offset, total_allocated); + if (!tmp) + break; + + addr[i] = cpu_to_be64(__pa(tmp) | + TCE_PCI_READ | TCE_PCI_WRITE); + + if (*current_offset >= limit) + break; + } + + return addr; +} + +long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, + __u32 page_shift, __u64 window_size, __u32 levels, + bool alloc_userspace_copy, struct iommu_table *tbl) +{ + void *addr, *uas = NULL; + unsigned long offset = 0, level_shift, total_allocated = 0; + unsigned long total_allocated_uas = 0; + const unsigned int window_shift = ilog2(window_size); + unsigned int entries_shift = window_shift - page_shift; + unsigned int table_shift = max_t(unsigned int, entries_shift + 3, + PAGE_SHIFT); + const unsigned long tce_table_size = 1UL << table_shift; + unsigned int tmplevels = levels; + + if (!levels || (levels > POWERNV_IOMMU_MAX_LEVELS)) + return -EINVAL; + + if (!is_power_of_2(window_size)) + return -EINVAL; + + if (alloc_userspace_copy && (window_size > (1ULL << 32))) + tmplevels = 1; + + /* Adjust direct table size from window_size and levels */ + entries_shift = (entries_shift + levels - 1) / levels; + level_shift = entries_shift + 3; + level_shift = max_t(unsigned int, level_shift, PAGE_SHIFT); + + if ((level_shift - 3) * levels + page_shift >= 60) + return -EINVAL; + + /* Allocate TCE table */ + addr = pnv_pci_ioda2_table_do_alloc_pages(nid, level_shift, + tmplevels, tce_table_size, &offset, &total_allocated); + + /* addr==NULL means that the first level allocation failed */ + if (!addr) + return -ENOMEM; + + /* + * First level was allocated but some lower level failed as + * we did not allocate as much as we wanted, + * release partially allocated table. + */ + if (tmplevels == levels && offset < tce_table_size) + goto free_tces_exit; + + /* Allocate userspace view of the TCE table */ + if (alloc_userspace_copy) { + offset = 0; + uas = pnv_pci_ioda2_table_do_alloc_pages(nid, level_shift, + levels, tce_table_size, &offset, + &total_allocated_uas); + if (!uas) + goto free_tces_exit; + if (tmplevels == levels && (offset < tce_table_size || + total_allocated_uas != total_allocated)) + goto free_uas_exit; + } + + /* Setup linux iommu table */ + pnv_pci_setup_iommu_table(tbl, addr, tce_table_size, bus_offset, + page_shift); + tbl->it_level_size = 1ULL << (level_shift - 3); + tbl->it_indirect_levels = levels - 1; + tbl->it_allocated_size = total_allocated; + tbl->it_userspace = uas; + tbl->it_nid = nid; + + pr_debug("Created TCE table: ws=%08llx ts=%lx @%08llx base=%lx uas=%p levels=%d/%d\n", + window_size, tce_table_size, bus_offset, tbl->it_base, + tbl->it_userspace, tmplevels, levels); + + return 0; + +free_uas_exit: + pnv_pci_ioda2_table_do_free_pages(uas, + 1ULL << (level_shift - 3), levels - 1); +free_tces_exit: + pnv_pci_ioda2_table_do_free_pages(addr, + 1ULL << (level_shift - 3), levels - 1); + + return -ENOMEM; +} + +static void pnv_iommu_table_group_link_free(struct rcu_head *head) +{ + struct iommu_table_group_link *tgl = container_of(head, + struct iommu_table_group_link, rcu); + + kfree(tgl); +} + +void pnv_pci_unlink_table_and_group(struct iommu_table *tbl, + struct iommu_table_group *table_group) +{ + long i; + bool found; + struct iommu_table_group_link *tgl; + + if (!tbl || !table_group) + return; + + /* Remove link to a group from table's list of attached groups */ + found = false; + list_for_each_entry_rcu(tgl, &tbl->it_group_list, next) { + if (tgl->table_group == table_group) { + list_del_rcu(&tgl->next); + call_rcu(&tgl->rcu, pnv_iommu_table_group_link_free); + found = true; + break; + } + } + if (WARN_ON(!found)) + return; + + /* Clean a pointer to iommu_table in iommu_table_group::tables[] */ + found = false; + for (i = 0; i < IOMMU_TABLE_GROUP_MAX_TABLES; ++i) { + if (table_group->tables[i] == tbl) { + table_group->tables[i] = NULL; + found = true; + break; + } + } + WARN_ON(!found); +} + +long pnv_pci_link_table_and_group(int node, int num, + struct iommu_table *tbl, + struct iommu_table_group *table_group) +{ + struct iommu_table_group_link *tgl = NULL; + + if (WARN_ON(!tbl || !table_group)) + return -EINVAL; + + tgl = kzalloc_node(sizeof(struct iommu_table_group_link), GFP_KERNEL, + node); + if (!tgl) + return -ENOMEM; + + tgl->table_group = table_group; + list_add_rcu(&tgl->next, &tbl->it_group_list); + + table_group->tables[num] = tbl; + + return 0; +} diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 70b2e1e0f23c..4e6302bf4073 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -52,12 +52,8 @@ #define PNV_IODA1_M64_SEGS 8 /* Segments per M64 BAR */ #define PNV_IODA1_DMA32_SEGSIZE 0x10000000 -#define POWERNV_IOMMU_DEFAULT_LEVELS 1 -#define POWERNV_IOMMU_MAX_LEVELS 5 - static const char * const pnv_phb_names[] = { "IODA1", "IODA2", "NPU_NVLINK", "NPU_OCAPI" }; -static void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl); void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, const char *fmt, ...) @@ -2008,7 +2004,7 @@ static int pnv_ioda1_tce_build(struct iommu_table *tbl, long index, static int pnv_ioda1_tce_xchg(struct iommu_table *tbl, long index, unsigned long *hpa, enum dma_data_direction *direction) { - long ret = pnv_tce_xchg(tbl, index, hpa, direction); + long ret = pnv_tce_xchg(tbl, index, hpa, direction, true); if (!ret) pnv_pci_p7ioc_tce_invalidate(tbl, index, 1, false); @@ -2019,7 +2015,7 @@ static int pnv_ioda1_tce_xchg(struct iommu_table *tbl, long index, static int pnv_ioda1_tce_xchg_rm(struct iommu_table *tbl, long index, unsigned long *hpa, enum dma_data_direction *direction) { - long ret = pnv_tce_xchg(tbl, index, hpa, direction); + long ret = pnv_tce_xchg(tbl, index, hpa, direction, false); if (!ret) pnv_pci_p7ioc_tce_invalidate(tbl, index, 1, true); @@ -2041,6 +2037,7 @@ static struct iommu_table_ops pnv_ioda1_iommu_ops = { #ifdef CONFIG_IOMMU_API .exchange = pnv_ioda1_tce_xchg, .exchange_rm = pnv_ioda1_tce_xchg_rm, + .useraddrptr = pnv_tce_useraddrptr, #endif .clear = pnv_ioda1_tce_free, .get = pnv_tce_get, @@ -2172,7 +2169,7 @@ static int pnv_ioda2_tce_build(struct iommu_table *tbl, long index, static int pnv_ioda2_tce_xchg(struct iommu_table *tbl, long index, unsigned long *hpa, enum dma_data_direction *direction) { - long ret = pnv_tce_xchg(tbl, index, hpa, direction); + long ret = pnv_tce_xchg(tbl, index, hpa, direction, true); if (!ret) pnv_pci_ioda2_tce_invalidate(tbl, index, 1, false); @@ -2183,7 +2180,7 @@ static int pnv_ioda2_tce_xchg(struct iommu_table *tbl, long index, static int pnv_ioda2_tce_xchg_rm(struct iommu_table *tbl, long index, unsigned long *hpa, enum dma_data_direction *direction) { - long ret = pnv_tce_xchg(tbl, index, hpa, direction); + long ret = pnv_tce_xchg(tbl, index, hpa, direction, false); if (!ret) pnv_pci_ioda2_tce_invalidate(tbl, index, 1, true); @@ -2200,20 +2197,16 @@ static void pnv_ioda2_tce_free(struct iommu_table *tbl, long index, pnv_pci_ioda2_tce_invalidate(tbl, index, npages, false); } -static void pnv_ioda2_table_free(struct iommu_table *tbl) -{ - pnv_pci_ioda2_table_free_pages(tbl); -} - static struct iommu_table_ops pnv_ioda2_iommu_ops = { .set = pnv_ioda2_tce_build, #ifdef CONFIG_IOMMU_API .exchange = pnv_ioda2_tce_xchg, .exchange_rm = pnv_ioda2_tce_xchg_rm, + .useraddrptr = pnv_tce_useraddrptr, #endif .clear = pnv_ioda2_tce_free, .get = pnv_tce_get, - .free = pnv_ioda2_table_free, + .free = pnv_pci_ioda2_table_free_pages, }; static int pnv_pci_ioda_dev_dma_weight(struct pci_dev *dev, void *data) @@ -2463,13 +2456,9 @@ void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable) pe->tce_bypass_enabled = enable; } -static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, - __u32 page_shift, __u64 window_size, __u32 levels, - struct iommu_table *tbl); - static long pnv_pci_ioda2_create_table(struct iommu_table_group *table_group, int num, __u32 page_shift, __u64 window_size, __u32 levels, - struct iommu_table **ptbl) + bool alloc_userspace_copy, struct iommu_table **ptbl) { struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe, table_group); @@ -2486,7 +2475,7 @@ static long pnv_pci_ioda2_create_table(struct iommu_table_group *table_group, ret = pnv_pci_ioda2_table_alloc_pages(nid, bus_offset, page_shift, window_size, - levels, tbl); + levels, alloc_userspace_copy, tbl); if (ret) { iommu_tce_table_put(tbl); return ret; @@ -2519,7 +2508,7 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe) rc = pnv_pci_ioda2_create_table(&pe->table_group, 0, IOMMU_PAGE_SHIFT_4K, window_size, - POWERNV_IOMMU_DEFAULT_LEVELS, &tbl); + POWERNV_IOMMU_DEFAULT_LEVELS, false, &tbl); if (rc) { pe_err(pe, "Failed to create 32-bit TCE table, err %ld", rc); @@ -2606,7 +2595,16 @@ static unsigned long pnv_pci_ioda2_get_table_size(__u32 page_shift, tce_table_size, direct_table_size); } - return bytes; + return bytes + bytes; /* one for HW table, one for userspace copy */ +} + +static long pnv_pci_ioda2_create_table_userspace( + struct iommu_table_group *table_group, + int num, __u32 page_shift, __u64 window_size, __u32 levels, + struct iommu_table **ptbl) +{ + return pnv_pci_ioda2_create_table(table_group, + num, page_shift, window_size, levels, true, ptbl); } static void pnv_ioda2_take_ownership(struct iommu_table_group *table_group) @@ -2635,7 +2633,7 @@ static void pnv_ioda2_release_ownership(struct iommu_table_group *table_group) static struct iommu_table_group_ops pnv_pci_ioda2_ops = { .get_table_size = pnv_pci_ioda2_get_table_size, - .create_table = pnv_pci_ioda2_create_table, + .create_table = pnv_pci_ioda2_create_table_userspace, .set_window = pnv_pci_ioda2_set_window, .unset_window = pnv_pci_ioda2_unset_window, .take_ownership = pnv_ioda2_take_ownership, @@ -2740,7 +2738,7 @@ static void pnv_ioda2_npu_take_ownership(struct iommu_table_group *table_group) static struct iommu_table_group_ops pnv_pci_ioda2_npu_ops = { .get_table_size = pnv_pci_ioda2_get_table_size, - .create_table = pnv_pci_ioda2_create_table, + .create_table = pnv_pci_ioda2_create_table_userspace, .set_window = pnv_pci_ioda2_npu_set_window, .unset_window = pnv_pci_ioda2_npu_unset_window, .take_ownership = pnv_ioda2_npu_take_ownership, @@ -2774,144 +2772,6 @@ static void pnv_pci_ioda_setup_iommu_api(void) static void pnv_pci_ioda_setup_iommu_api(void) { }; #endif -static __be64 *pnv_pci_ioda2_table_do_alloc_pages(int nid, unsigned shift, - unsigned levels, unsigned long limit, - unsigned long *current_offset, unsigned long *total_allocated) -{ - struct page *tce_mem = NULL; - __be64 *addr, *tmp; - unsigned order = max_t(unsigned, shift, PAGE_SHIFT) - PAGE_SHIFT; - unsigned long allocated = 1UL << (order + PAGE_SHIFT); - unsigned entries = 1UL << (shift - 3); - long i; - - tce_mem = alloc_pages_node(nid, GFP_KERNEL, order); - if (!tce_mem) { - pr_err("Failed to allocate a TCE memory, order=%d\n", order); - return NULL; - } - addr = page_address(tce_mem); - memset(addr, 0, allocated); - *total_allocated += allocated; - - --levels; - if (!levels) { - *current_offset += allocated; - return addr; - } - - for (i = 0; i < entries; ++i) { - tmp = pnv_pci_ioda2_table_do_alloc_pages(nid, shift, - levels, limit, current_offset, total_allocated); - if (!tmp) - break; - - addr[i] = cpu_to_be64(__pa(tmp) | - TCE_PCI_READ | TCE_PCI_WRITE); - - if (*current_offset >= limit) - break; - } - - return addr; -} - -static void pnv_pci_ioda2_table_do_free_pages(__be64 *addr, - unsigned long size, unsigned level); - -static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, - __u32 page_shift, __u64 window_size, __u32 levels, - struct iommu_table *tbl) -{ - void *addr; - unsigned long offset = 0, level_shift, total_allocated = 0; - const unsigned window_shift = ilog2(window_size); - unsigned entries_shift = window_shift - page_shift; - unsigned table_shift = max_t(unsigned, entries_shift + 3, PAGE_SHIFT); - const unsigned long tce_table_size = 1UL << table_shift; - - if (!levels || (levels > POWERNV_IOMMU_MAX_LEVELS)) - return -EINVAL; - - if (!is_power_of_2(window_size)) - return -EINVAL; - - /* Adjust direct table size from window_size and levels */ - entries_shift = (entries_shift + levels - 1) / levels; - level_shift = entries_shift + 3; - level_shift = max_t(unsigned, level_shift, PAGE_SHIFT); - - if ((level_shift - 3) * levels + page_shift >= 60) - return -EINVAL; - - /* Allocate TCE table */ - addr = pnv_pci_ioda2_table_do_alloc_pages(nid, level_shift, - levels, tce_table_size, &offset, &total_allocated); - - /* addr==NULL means that the first level allocation failed */ - if (!addr) - return -ENOMEM; - - /* - * First level was allocated but some lower level failed as - * we did not allocate as much as we wanted, - * release partially allocated table. - */ - if (offset < tce_table_size) { - pnv_pci_ioda2_table_do_free_pages(addr, - 1ULL << (level_shift - 3), levels - 1); - return -ENOMEM; - } - - /* Setup linux iommu table */ - pnv_pci_setup_iommu_table(tbl, addr, tce_table_size, bus_offset, - page_shift); - tbl->it_level_size = 1ULL << (level_shift - 3); - tbl->it_indirect_levels = levels - 1; - tbl->it_allocated_size = total_allocated; - - pr_devel("Created TCE table: ws=%08llx ts=%lx @%08llx\n", - window_size, tce_table_size, bus_offset); - - return 0; -} - -static void pnv_pci_ioda2_table_do_free_pages(__be64 *addr, - unsigned long size, unsigned level) -{ - const unsigned long addr_ul = (unsigned long) addr & - ~(TCE_PCI_READ | TCE_PCI_WRITE); - - if (level) { - long i; - u64 *tmp = (u64 *) addr_ul; - - for (i = 0; i < size; ++i) { - unsigned long hpa = be64_to_cpu(tmp[i]); - - if (!(hpa & (TCE_PCI_READ | TCE_PCI_WRITE))) - continue; - - pnv_pci_ioda2_table_do_free_pages(__va(hpa), size, - level - 1); - } - } - - free_pages(addr_ul, get_order(size << 3)); -} - -static void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl) -{ - const unsigned long size = tbl->it_indirect_levels ? - tbl->it_level_size : tbl->it_size; - - if (!tbl->it_size) - return; - - pnv_pci_ioda2_table_do_free_pages((__be64 *)tbl->it_base, size, - tbl->it_indirect_levels); -} - static unsigned long pnv_ioda_parse_tce_sizes(struct pnv_phb *phb) { struct pci_controller *hose = phb->hose; @@ -2926,7 +2786,7 @@ static unsigned long pnv_ioda_parse_tce_sizes(struct pnv_phb *phb) /* Add 16M for POWER8 by default */ if (cpu_has_feature(CPU_FTR_ARCH_207S) && !cpu_has_feature(CPU_FTR_ARCH_300)) - mask |= SZ_16M; + mask |= SZ_16M | SZ_256M; return mask; } @@ -3576,7 +3436,7 @@ static resource_size_t pnv_pci_iov_resource_alignment(struct pci_dev *pdev, /* Prevent enabling devices for which we couldn't properly * assign a PE */ -bool pnv_pci_enable_device_hook(struct pci_dev *dev) +static bool pnv_pci_enable_device_hook(struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); struct pnv_phb *phb = hose->private_data; @@ -3844,26 +3704,6 @@ static const struct pci_controller_ops pnv_npu_ocapi_ioda_controller_ops = { .shutdown = pnv_pci_ioda_shutdown, }; -#ifdef CONFIG_CXL_BASE -const struct pci_controller_ops pnv_cxl_cx4_ioda_controller_ops = { - .dma_dev_setup = pnv_pci_dma_dev_setup, - .dma_bus_setup = pnv_pci_dma_bus_setup, -#ifdef CONFIG_PCI_MSI - .setup_msi_irqs = pnv_cxl_cx4_setup_msi_irqs, - .teardown_msi_irqs = pnv_cxl_cx4_teardown_msi_irqs, -#endif - .enable_device_hook = pnv_cxl_enable_device_hook, - .disable_device = pnv_cxl_disable_device, - .release_device = pnv_pci_release_device, - .window_alignment = pnv_pci_window_alignment, - .setup_bridge = pnv_pci_setup_bridge, - .reset_secondary_bus = pnv_pci_reset_secondary_bus, - .dma_set_mask = pnv_pci_ioda_dma_set_mask, - .dma_get_required_mask = pnv_pci_ioda_dma_get_required_mask, - .shutdown = pnv_pci_ioda_shutdown, -}; -#endif - static void __init pnv_pci_init_ioda_phb(struct device_node *np, u64 hub_id, int ioda_type) { diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index b265ecc0836a..13aef2323bbc 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -802,85 +802,6 @@ struct pci_ops pnv_pci_ops = { .write = pnv_pci_write_config, }; -static __be64 *pnv_tce(struct iommu_table *tbl, long idx) -{ - __be64 *tmp = ((__be64 *)tbl->it_base); - int level = tbl->it_indirect_levels; - const long shift = ilog2(tbl->it_level_size); - unsigned long mask = (tbl->it_level_size - 1) << (level * shift); - - while (level) { - int n = (idx & mask) >> (level * shift); - unsigned long tce = be64_to_cpu(tmp[n]); - - tmp = __va(tce & ~(TCE_PCI_READ | TCE_PCI_WRITE)); - idx &= ~mask; - mask >>= shift; - --level; - } - - return tmp + idx; -} - -int pnv_tce_build(struct iommu_table *tbl, long index, long npages, - unsigned long uaddr, enum dma_data_direction direction, - unsigned long attrs) -{ - u64 proto_tce = iommu_direction_to_tce_perm(direction); - u64 rpn = __pa(uaddr) >> tbl->it_page_shift; - long i; - - if (proto_tce & TCE_PCI_WRITE) - proto_tce |= TCE_PCI_READ; - - for (i = 0; i < npages; i++) { - unsigned long newtce = proto_tce | - ((rpn + i) << tbl->it_page_shift); - unsigned long idx = index - tbl->it_offset + i; - - *(pnv_tce(tbl, idx)) = cpu_to_be64(newtce); - } - - return 0; -} - -#ifdef CONFIG_IOMMU_API -int pnv_tce_xchg(struct iommu_table *tbl, long index, - unsigned long *hpa, enum dma_data_direction *direction) -{ - u64 proto_tce = iommu_direction_to_tce_perm(*direction); - unsigned long newtce = *hpa | proto_tce, oldtce; - unsigned long idx = index - tbl->it_offset; - - BUG_ON(*hpa & ~IOMMU_PAGE_MASK(tbl)); - - if (newtce & TCE_PCI_WRITE) - newtce |= TCE_PCI_READ; - - oldtce = be64_to_cpu(xchg(pnv_tce(tbl, idx), cpu_to_be64(newtce))); - *hpa = oldtce & ~(TCE_PCI_READ | TCE_PCI_WRITE); - *direction = iommu_tce_direction(oldtce); - - return 0; -} -#endif - -void pnv_tce_free(struct iommu_table *tbl, long index, long npages) -{ - long i; - - for (i = 0; i < npages; i++) { - unsigned long idx = index - tbl->it_offset + i; - - *(pnv_tce(tbl, idx)) = cpu_to_be64(0); - } -} - -unsigned long pnv_tce_get(struct iommu_table *tbl, long index) -{ - return be64_to_cpu(*(pnv_tce(tbl, index - tbl->it_offset))); -} - struct iommu_table *pnv_pci_table_alloc(int nid) { struct iommu_table *tbl; @@ -895,85 +816,6 @@ struct iommu_table *pnv_pci_table_alloc(int nid) return tbl; } -long pnv_pci_link_table_and_group(int node, int num, - struct iommu_table *tbl, - struct iommu_table_group *table_group) -{ - struct iommu_table_group_link *tgl = NULL; - - if (WARN_ON(!tbl || !table_group)) - return -EINVAL; - - tgl = kzalloc_node(sizeof(struct iommu_table_group_link), GFP_KERNEL, - node); - if (!tgl) - return -ENOMEM; - - tgl->table_group = table_group; - list_add_rcu(&tgl->next, &tbl->it_group_list); - - table_group->tables[num] = tbl; - - return 0; -} - -static void pnv_iommu_table_group_link_free(struct rcu_head *head) -{ - struct iommu_table_group_link *tgl = container_of(head, - struct iommu_table_group_link, rcu); - - kfree(tgl); -} - -void pnv_pci_unlink_table_and_group(struct iommu_table *tbl, - struct iommu_table_group *table_group) -{ - long i; - bool found; - struct iommu_table_group_link *tgl; - - if (!tbl || !table_group) - return; - - /* Remove link to a group from table's list of attached groups */ - found = false; - list_for_each_entry_rcu(tgl, &tbl->it_group_list, next) { - if (tgl->table_group == table_group) { - list_del_rcu(&tgl->next); - call_rcu(&tgl->rcu, pnv_iommu_table_group_link_free); - found = true; - break; - } - } - if (WARN_ON(!found)) - return; - - /* Clean a pointer to iommu_table in iommu_table_group::tables[] */ - found = false; - for (i = 0; i < IOMMU_TABLE_GROUP_MAX_TABLES; ++i) { - if (table_group->tables[i] == tbl) { - table_group->tables[i] = NULL; - found = true; - break; - } - } - WARN_ON(!found); -} - -void pnv_pci_setup_iommu_table(struct iommu_table *tbl, - void *tce_mem, u64 tce_size, - u64 dma_offset, unsigned page_shift) -{ - tbl->it_blocksize = 16; - tbl->it_base = (unsigned long)tce_mem; - tbl->it_page_shift = page_shift; - tbl->it_offset = dma_offset >> tbl->it_page_shift; - tbl->it_index = 0; - tbl->it_size = tce_size >> 3; - tbl->it_busno = 0; - tbl->it_type = TCE_PCI; -} - void pnv_pci_dma_dev_setup(struct pci_dev *pdev) { struct pci_controller *hose = pci_bus_to_host(pdev->bus); diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index eada4b6068cb..8b37b28e3831 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -88,7 +88,6 @@ struct pnv_ioda_pe { }; #define PNV_PHB_FLAG_EEH (1 << 0) -#define PNV_PHB_FLAG_CXL (1 << 1) /* Real PHB supporting the cxl kernel API */ struct pnv_phb { struct pci_controller *hose; @@ -194,20 +193,10 @@ struct pnv_phb { bool nmmu_flush; } npu; -#ifdef CONFIG_CXL_BASE - struct cxl_afu *cxl_afu; -#endif int p2p_target_count; }; extern struct pci_ops pnv_pci_ops; -extern int pnv_tce_build(struct iommu_table *tbl, long index, long npages, - unsigned long uaddr, enum dma_data_direction direction, - unsigned long attrs); -extern void pnv_tce_free(struct iommu_table *tbl, long index, long npages); -extern int pnv_tce_xchg(struct iommu_table *tbl, long index, - unsigned long *hpa, enum dma_data_direction *direction); -extern unsigned long pnv_tce_get(struct iommu_table *tbl, long index); void pnv_pci_dump_phb_diag_data(struct pci_controller *hose, unsigned char *log_buff); @@ -217,14 +206,6 @@ int pnv_pci_cfg_write(struct pci_dn *pdn, int where, int size, u32 val); extern struct iommu_table *pnv_pci_table_alloc(int nid); -extern long pnv_pci_link_table_and_group(int node, int num, - struct iommu_table *tbl, - struct iommu_table_group *table_group); -extern void pnv_pci_unlink_table_and_group(struct iommu_table *tbl, - struct iommu_table_group *table_group); -extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl, - void *tce_mem, u64 tce_size, - u64 dma_offset, unsigned page_shift); extern void pnv_pci_init_ioda_hub(struct device_node *np); extern void pnv_pci_init_ioda2_phb(struct device_node *np); extern void pnv_pci_init_npu_phb(struct device_node *np); @@ -238,7 +219,6 @@ extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type); extern void pnv_teardown_msi_irqs(struct pci_dev *pdev); extern struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev); extern void pnv_set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq); -extern bool pnv_pci_enable_device_hook(struct pci_dev *dev); extern void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable); extern int pnv_eeh_post_init(void); @@ -262,14 +242,33 @@ extern void pnv_npu_take_ownership(struct pnv_ioda_pe *npe); extern void pnv_npu_release_ownership(struct pnv_ioda_pe *npe); extern int pnv_npu2_init(struct pnv_phb *phb); -/* cxl functions */ -extern bool pnv_cxl_enable_device_hook(struct pci_dev *dev); -extern void pnv_cxl_disable_device(struct pci_dev *dev); -extern int pnv_cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type); -extern void pnv_cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev); +/* pci-ioda-tce.c */ +#define POWERNV_IOMMU_DEFAULT_LEVELS 1 +#define POWERNV_IOMMU_MAX_LEVELS 5 +extern int pnv_tce_build(struct iommu_table *tbl, long index, long npages, + unsigned long uaddr, enum dma_data_direction direction, + unsigned long attrs); +extern void pnv_tce_free(struct iommu_table *tbl, long index, long npages); +extern int pnv_tce_xchg(struct iommu_table *tbl, long index, + unsigned long *hpa, enum dma_data_direction *direction, + bool alloc); +extern __be64 *pnv_tce_useraddrptr(struct iommu_table *tbl, long index, + bool alloc); +extern unsigned long pnv_tce_get(struct iommu_table *tbl, long index); + +extern long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, + __u32 page_shift, __u64 window_size, __u32 levels, + bool alloc_userspace_copy, struct iommu_table *tbl); +extern void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl); -/* phb ops (cxl switches these when enabling the kernel api on the phb) */ -extern const struct pci_controller_ops pnv_cxl_cx4_ioda_controller_ops; +extern long pnv_pci_link_table_and_group(int node, int num, + struct iommu_table *tbl, + struct iommu_table_group *table_group); +extern void pnv_pci_unlink_table_and_group(struct iommu_table *tbl, + struct iommu_table_group *table_group); +extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl, + void *tce_mem, u64 tce_size, + u64 dma_offset, unsigned int page_shift); #endif /* __POWERNV_PCI_H */ diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index f96df0a25d05..adddde023622 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -78,6 +78,12 @@ static void init_fw_feat_flags(struct device_node *np) if (fw_feature_is("enabled", "fw-count-cache-disabled", np)) security_ftr_set(SEC_FTR_COUNT_CACHE_DISABLED); + if (fw_feature_is("enabled", "fw-count-cache-flush-bcctr2,0,0", np)) + security_ftr_set(SEC_FTR_BCCTR_FLUSH_ASSIST); + + if (fw_feature_is("enabled", "needs-count-cache-flush-on-context-switch", np)) + security_ftr_set(SEC_FTR_FLUSH_COUNT_CACHE); + /* * The features below are enabled by default, so we instead look to see * if firmware has *disabled* them, and clear them if so. @@ -124,7 +130,7 @@ static void pnv_setup_rfi_flush(void) security_ftr_enabled(SEC_FTR_L1D_FLUSH_HV)); setup_rfi_flush(type, enable); - setup_barrier_nospec(); + setup_count_cache_flush(); } static void __init pnv_setup_arch(void) @@ -314,7 +320,7 @@ static void pnv_kexec_cpu_down(int crash_shutdown, int secondary) u64 reinit_flags; if (xive_enabled()) - xive_kexec_teardown_cpu(secondary); + xive_teardown_cpu(); else xics_kexec_teardown_cpu(secondary); diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index b80909957792..0d354e19ef92 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -283,23 +283,6 @@ static void pnv_cause_ipi(int cpu) ic_cause_ipi(cpu); } -static void pnv_p9_dd1_cause_ipi(int cpu) -{ - int this_cpu = get_cpu(); - - /* - * POWER9 DD1 has a global addressed msgsnd, but for now we restrict - * IPIs to same core, because it requires additional synchronization - * for inter-core doorbells which we do not implement. - */ - if (cpumask_test_cpu(cpu, cpu_sibling_mask(this_cpu))) - doorbell_global_ipi(cpu); - else - ic_cause_ipi(cpu); - - put_cpu(); -} - static void __init pnv_smp_probe(void) { if (xive_enabled()) @@ -311,14 +294,10 @@ static void __init pnv_smp_probe(void) ic_cause_ipi = smp_ops->cause_ipi; WARN_ON(!ic_cause_ipi); - if (cpu_has_feature(CPU_FTR_ARCH_300)) { - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - smp_ops->cause_ipi = pnv_p9_dd1_cause_ipi; - else - smp_ops->cause_ipi = doorbell_global_ipi; - } else { + if (cpu_has_feature(CPU_FTR_ARCH_300)) + smp_ops->cause_ipi = doorbell_global_ipi; + else smp_ops->cause_ipi = pnv_cause_ipi; - } } } diff --git a/arch/powerpc/platforms/powernv/vas.h b/arch/powerpc/platforms/powernv/vas.h index ae0100fd35bb..f5493dbdd7ff 100644 --- a/arch/powerpc/platforms/powernv/vas.h +++ b/arch/powerpc/platforms/powernv/vas.h @@ -15,6 +15,7 @@ #include <linux/io.h> #include <linux/dcache.h> #include <linux/mutex.h> +#include <linux/stringify.h> /* * Overview of Virtual Accelerator Switchboard (VAS). diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile index 13eede60c24d..7e89d5c47068 100644 --- a/arch/powerpc/platforms/pseries/Makefile +++ b/arch/powerpc/platforms/pseries/Makefile @@ -25,6 +25,6 @@ obj-$(CONFIG_LPARCFG) += lparcfg.o obj-$(CONFIG_IBMVIO) += vio.o obj-$(CONFIG_IBMEBUS) += ibmebus.o -ifeq ($(CONFIG_PPC_PSERIES),y) +ifdef CONFIG_PPC_PSERIES obj-$(CONFIG_SUSPEND) += suspend.o endif diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S index c511a1743a44..d91412c591ef 100644 --- a/arch/powerpc/platforms/pseries/hvCall.S +++ b/arch/powerpc/platforms/pseries/hvCall.S @@ -13,6 +13,7 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/ptrace.h> +#include <asm/feature-fixups.h> .section ".text" diff --git a/arch/powerpc/platforms/pseries/kexec.c b/arch/powerpc/platforms/pseries/kexec.c index 46fbaef69a59..23f54223ed56 100644 --- a/arch/powerpc/platforms/pseries/kexec.c +++ b/arch/powerpc/platforms/pseries/kexec.c @@ -58,7 +58,7 @@ void pseries_kexec_cpu_down(int crash_shutdown, int secondary) } if (xive_enabled()) { - xive_kexec_teardown_cpu(secondary); + xive_teardown_cpu(); if (!secondary) xive_shutdown(); diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 5a392e40f3d2..d3992ced0782 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -21,6 +21,7 @@ /* Enables debugging of low-level hash table routines - careful! */ #undef DEBUG +#define pr_fmt(fmt) "lpar: " fmt #include <linux/kernel.h> #include <linux/dma-mapping.h> @@ -36,7 +37,6 @@ #include <asm/machdep.h> #include <asm/mmu_context.h> #include <asm/iommu.h> -#include <asm/tlbflush.h> #include <asm/tlb.h> #include <asm/prom.h> #include <asm/cputable.h> @@ -165,8 +165,7 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group, lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot); if (unlikely(lpar_rc == H_PTEG_FULL)) { - if (!(vflags & HPTE_V_BOLTED)) - pr_devel(" full\n"); + pr_devel("Hash table group is full\n"); return -1; } @@ -176,8 +175,7 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group, * or we will loop forever, so return -2 in this case. */ if (unlikely(lpar_rc != H_SUCCESS)) { - if (!(vflags & HPTE_V_BOLTED)) - pr_devel(" lpar err %ld\n", lpar_rc); + pr_err("Failed hash pte insert with error %ld\n", lpar_rc); return -2; } if (!(vflags & HPTE_V_BOLTED)) @@ -240,8 +238,11 @@ static void manual_hpte_clear_all(void) */ for (i = 0; i < hpte_count; i += 4) { lpar_rc = plpar_pte_read_4_raw(0, i, (void *)ptes); - if (lpar_rc != H_SUCCESS) + if (lpar_rc != H_SUCCESS) { + pr_info("Failed to read hash page table at %ld err %ld\n", + i, lpar_rc); continue; + } for (j = 0; j < 4; j++){ if ((ptes[j].pteh & HPTE_V_VRMA_MASK) == HPTE_V_VRMA_MASK) @@ -340,8 +341,11 @@ static long __pSeries_lpar_hpte_find(unsigned long want_v, unsigned long hpte_gr for (i = 0; i < HPTES_PER_GROUP; i += 4, hpte_group += 4) { lpar_rc = plpar_pte_read_4(0, hpte_group, (void *)ptes); - if (lpar_rc != H_SUCCESS) + if (lpar_rc != H_SUCCESS) { + pr_info("Failed to read hash page table at %ld err %ld\n", + hpte_group, lpar_rc); continue; + } for (j = 0; j < 4; j++) { if (HPTE_V_COMPARE(ptes[j].pteh, want_v) && @@ -612,8 +616,8 @@ static int __init disable_bulk_remove(char *str) { if (strcmp(str, "off") == 0 && firmware_has_feature(FW_FEATURE_BULK_REMOVE)) { - printk(KERN_INFO "Disabling BULK_REMOVE firmware feature"); - powerpc_firmware_features &= ~FW_FEATURE_BULK_REMOVE; + pr_info("Disabling BULK_REMOVE firmware feature"); + powerpc_firmware_features &= ~FW_FEATURE_BULK_REMOVE; } return 1; } @@ -659,8 +663,7 @@ static int pseries_lpar_resize_hpt(unsigned long shift) if (!firmware_has_feature(FW_FEATURE_HPT_RESIZE)) return -ENODEV; - printk(KERN_INFO "lpar: Attempting to resize HPT to shift %lu\n", - shift); + pr_info("Attempting to resize HPT to shift %lu\n", shift); t0 = ktime_get(); @@ -672,8 +675,7 @@ static int pseries_lpar_resize_hpt(unsigned long shift) /* prepare with shift==0 cancels an in-progress resize */ rc = plpar_resize_hpt_prepare(0, 0); if (rc != H_SUCCESS) - printk(KERN_WARNING - "lpar: Unexpected error %d cancelling timed out HPT resize\n", + pr_warn("Unexpected error %d cancelling timed out HPT resize\n", rc); return -ETIMEDOUT; } @@ -691,9 +693,7 @@ static int pseries_lpar_resize_hpt(unsigned long shift) case H_RESOURCE: return -EPERM; default: - printk(KERN_WARNING - "lpar: Unexpected error %d from H_RESIZE_HPT_PREPARE\n", - rc); + pr_warn("Unexpected error %d from H_RESIZE_HPT_PREPARE\n", rc); return -EIO; } @@ -706,22 +706,19 @@ static int pseries_lpar_resize_hpt(unsigned long shift) if (rc != 0) { switch (state.commit_rc) { case H_PTEG_FULL: - printk(KERN_WARNING - "lpar: Hash collision while resizing HPT\n"); + pr_warn("Hash collision while resizing HPT\n"); return -ENOSPC; default: - printk(KERN_WARNING - "lpar: Unexpected error %d from H_RESIZE_HPT_COMMIT\n", - state.commit_rc); + pr_warn("Unexpected error %d from H_RESIZE_HPT_COMMIT\n", + state.commit_rc); return -EIO; }; } - printk(KERN_INFO - "lpar: HPT resize to shift %lu complete (%lld ms / %lld ms)\n", - shift, (long long) ktime_ms_delta(t1, t0), - (long long) ktime_ms_delta(t2, t1)); + pr_info("HPT resize to shift %lu complete (%lld ms / %lld ms)\n", + shift, (long long) ktime_ms_delta(t1, t0), + (long long) ktime_ms_delta(t2, t1)); return 0; } @@ -785,13 +782,13 @@ static int __init cmo_free_hint(char *str) parm = strstrip(str); if (strcasecmp(parm, "no") == 0 || strcasecmp(parm, "off") == 0) { - printk(KERN_INFO "cmo_free_hint: CMO free page hinting is not active.\n"); + pr_info("%s: CMO free page hinting is not active.\n", __func__); cmo_free_hint_flag = 0; return 1; } cmo_free_hint_flag = 1; - printk(KERN_INFO "cmo_free_hint: CMO free page hinting is active.\n"); + pr_info("%s: CMO free page hinting is active.\n", __func__); if (strcasecmp(parm, "yes") == 0 || strcasecmp(parm, "on") == 0) return 1; diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index 8a8033a249c7..f0e30dc94988 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -17,6 +17,7 @@ #include <linux/device.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/stringify.h> #include <asm/machdep.h> #include <asm/rtas.h> diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c index 5e1ef9150182..851ce326874a 100644 --- a/arch/powerpc/platforms/pseries/ras.c +++ b/arch/powerpc/platforms/pseries/ras.c @@ -22,6 +22,7 @@ #include <linux/of.h> #include <linux/fs.h> #include <linux/reboot.h> +#include <linux/irq_work.h> #include <asm/machdep.h> #include <asm/rtas.h> @@ -32,11 +33,13 @@ static unsigned char ras_log_buf[RTAS_ERROR_LOG_MAX]; static DEFINE_SPINLOCK(ras_log_buf_lock); -static char global_mce_data_buf[RTAS_ERROR_LOG_MAX]; -static DEFINE_PER_CPU(__u64, mce_data_buf); - static int ras_check_exception_token; +static void mce_process_errlog_event(struct irq_work *work); +static struct irq_work mce_errlog_process_work = { + .func = mce_process_errlog_event, +}; + #define EPOW_SENSOR_TOKEN 9 #define EPOW_SENSOR_INDEX 0 @@ -330,16 +333,20 @@ static irqreturn_t ras_error_interrupt(int irq, void *dev_id) ((((A) >= 0x7000) && ((A) < 0x7ff0)) || \ (((A) >= rtas.base) && ((A) < (rtas.base + rtas.size - 16)))) +static inline struct rtas_error_log *fwnmi_get_errlog(void) +{ + return (struct rtas_error_log *)local_paca->mce_data_buf; +} + /* * Get the error information for errors coming through the * FWNMI vectors. The pt_regs' r3 will be updated to reflect * the actual r3 if possible, and a ptr to the error log entry * will be returned if found. * - * If the RTAS error is not of the extended type, then we put it in a per - * cpu 64bit buffer. If it is the extended type we use global_mce_data_buf. + * Use one buffer mce_data_buf per cpu to store RTAS error. * - * The global_mce_data_buf does not have any locks or protection around it, + * The mce_data_buf does not have any locks or protection around it, * if a second machine check comes in, or a system reset is done * before we have logged the error, then we will get corruption in the * error log. This is preferable over holding off on calling @@ -349,7 +356,7 @@ static irqreturn_t ras_error_interrupt(int irq, void *dev_id) static struct rtas_error_log *fwnmi_get_errinfo(struct pt_regs *regs) { unsigned long *savep; - struct rtas_error_log *h, *errhdr = NULL; + struct rtas_error_log *h; /* Mask top two bits */ regs->gpr[3] &= ~(0x3UL << 62); @@ -360,24 +367,22 @@ static struct rtas_error_log *fwnmi_get_errinfo(struct pt_regs *regs) } savep = __va(regs->gpr[3]); - regs->gpr[3] = savep[0]; /* restore original r3 */ + regs->gpr[3] = be64_to_cpu(savep[0]); /* restore original r3 */ - /* If it isn't an extended log we can use the per cpu 64bit buffer */ h = (struct rtas_error_log *)&savep[1]; + /* Use the per cpu buffer from paca to store rtas error log */ + memset(local_paca->mce_data_buf, 0, RTAS_ERROR_LOG_MAX); if (!rtas_error_extended(h)) { - memcpy(this_cpu_ptr(&mce_data_buf), h, sizeof(__u64)); - errhdr = (struct rtas_error_log *)this_cpu_ptr(&mce_data_buf); + memcpy(local_paca->mce_data_buf, h, sizeof(__u64)); } else { int len, error_log_length; error_log_length = 8 + rtas_error_extended_log_length(h); - len = max_t(int, error_log_length, RTAS_ERROR_LOG_MAX); - memset(global_mce_data_buf, 0, RTAS_ERROR_LOG_MAX); - memcpy(global_mce_data_buf, h, len); - errhdr = (struct rtas_error_log *)global_mce_data_buf; + len = min_t(int, error_log_length, RTAS_ERROR_LOG_MAX); + memcpy(local_paca->mce_data_buf, h, len); } - return errhdr; + return (struct rtas_error_log *)local_paca->mce_data_buf; } /* Call this when done with the data returned by FWNMI_get_errinfo. @@ -423,6 +428,17 @@ int pSeries_system_reset_exception(struct pt_regs *regs) } /* + * Process MCE rtas errlog event. + */ +static void mce_process_errlog_event(struct irq_work *work) +{ + struct rtas_error_log *err; + + err = fwnmi_get_errlog(); + log_error((char *)err, ERR_TYPE_RTAS_LOG, 0); +} + +/* * See if we can recover from a machine check exception. * This is only called on power4 (or above) and only via * the Firmware Non-Maskable Interrupts (fwnmi) handler @@ -466,7 +482,8 @@ static int recover_mce(struct pt_regs *regs, struct rtas_error_log *err) recovered = 1; } - log_error((char *)err, ERR_TYPE_RTAS_LOG, 0); + /* Queue irq work to log this rtas event later. */ + irq_work_queue(&mce_errlog_process_work); return recovered; } diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 8a4868a3964b..ba1791fd3234 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -41,6 +41,7 @@ #include <linux/root_dev.h> #include <linux/of.h> #include <linux/of_pci.h> +#include <linux/memblock.h> #include <asm/mmu.h> #include <asm/processor.h> @@ -69,6 +70,7 @@ #include <asm/kexec.h> #include <asm/isa-bridge.h> #include <asm/security_features.h> +#include <asm/asm-const.h> #include "pseries.h" #include "../../../../drivers/pci/pci.h" @@ -102,6 +104,9 @@ static void pSeries_show_cpuinfo(struct seq_file *m) static void __init fwnmi_init(void) { unsigned long system_reset_addr, machine_check_addr; + u8 *mce_data_buf; + unsigned int i; + int nr_cpus = num_possible_cpus(); int ibm_nmi_register = rtas_token("ibm,nmi-register"); if (ibm_nmi_register == RTAS_UNKNOWN_SERVICE) @@ -115,6 +120,18 @@ static void __init fwnmi_init(void) if (0 == rtas_call(ibm_nmi_register, 2, 1, NULL, system_reset_addr, machine_check_addr)) fwnmi_active = 1; + + /* + * Allocate a chunk for per cpu buffer to hold rtas errorlog. + * It will be used in real mode mce handler, hence it needs to be + * below RMA. + */ + mce_data_buf = __va(memblock_alloc_base(RTAS_ERROR_LOG_MAX * nr_cpus, + RTAS_ERROR_LOG_MAX, ppc64_rma_size)); + for_each_possible_cpu(i) { + paca_ptrs[i]->mce_data_buf = mce_data_buf + + (RTAS_ERROR_LOG_MAX * i); + } } static void pseries_8259_cascade(struct irq_desc *desc) @@ -485,6 +502,12 @@ static void init_cpu_char_feature_flags(struct h_cpu_char_result *result) if (result->character & H_CPU_CHAR_COUNT_CACHE_DISABLED) security_ftr_set(SEC_FTR_COUNT_CACHE_DISABLED); + if (result->character & H_CPU_CHAR_BCCTR_FLUSH_ASSIST) + security_ftr_set(SEC_FTR_BCCTR_FLUSH_ASSIST); + + if (result->behaviour & H_CPU_BEHAV_FLUSH_COUNT_CACHE) + security_ftr_set(SEC_FTR_FLUSH_COUNT_CACHE); + /* * The features below are enabled by default, so we instead look to see * if firmware has *disabled* them, and clear them if so. @@ -535,7 +558,7 @@ void pseries_setup_rfi_flush(void) security_ftr_enabled(SEC_FTR_L1D_FLUSH_PR); setup_rfi_flush(types, enable); - setup_barrier_nospec(); + setup_count_cache_flush(); } #ifdef CONFIG_PCI_IOV @@ -647,6 +670,15 @@ void of_pci_parse_iov_addrs(struct pci_dev *dev, const int *indexes) } } +static void pseries_disable_sriov_resources(struct pci_dev *pdev) +{ + int i; + + pci_warn(pdev, "No hypervisor support for SR-IOV on this device, IOV BARs disabled.\n"); + for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) + pdev->resource[i + PCI_IOV_RESOURCES].flags = 0; +} + static void pseries_pci_fixup_resources(struct pci_dev *pdev) { const int *indexes; @@ -654,10 +686,10 @@ static void pseries_pci_fixup_resources(struct pci_dev *pdev) /*Firmware must support open sriov otherwise dont configure*/ indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); - if (!indexes) - return; - /* Assign the addresses from device tree*/ - of_pci_set_vf_bar_size(pdev, indexes); + if (indexes) + of_pci_set_vf_bar_size(pdev, indexes); + else + pseries_disable_sriov_resources(pdev); } static void pseries_pci_fixup_iov_resources(struct pci_dev *pdev) @@ -669,10 +701,10 @@ static void pseries_pci_fixup_iov_resources(struct pci_dev *pdev) return; /*Firmware must support open sriov otherwise dont configure*/ indexes = of_get_property(dn, "ibm,open-sriov-vf-bar-info", NULL); - if (!indexes) - return; - /* Assign the addresses from device tree*/ - of_pci_parse_iov_addrs(pdev, indexes); + if (indexes) + of_pci_parse_iov_addrs(pdev, indexes); + else + pseries_disable_sriov_resources(pdev); } static resource_size_t pseries_pci_iov_resource_alignment(struct pci_dev *pdev, diff --git a/arch/powerpc/purgatory/trampoline.S b/arch/powerpc/purgatory/trampoline.S index 4aad9dd10ace..1e1129553fd7 100644 --- a/arch/powerpc/purgatory/trampoline.S +++ b/arch/powerpc/purgatory/trampoline.S @@ -12,15 +12,7 @@ * Software Foundation (version 2 of the License). */ -#if defined(__LITTLE_ENDIAN__) -#define STWX_BE stwbrx -#define LWZX_BE lwbrx -#elif defined(__BIG_ENDIAN__) -#define STWX_BE stwx -#define LWZX_BE lwzx -#else -#error no endianness defined! -#endif +#include <asm/asm-compat.h> .machine ppc64 .balign 256 diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index ea2f595b5133..f730539074c4 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -48,7 +48,7 @@ obj-$(CONFIG_UCODE_PATCH) += micropatch.o obj-$(CONFIG_PPC_MPC512x) += mpc5xxx_clocks.o obj-$(CONFIG_PPC_MPC52xx) += mpc5xxx_clocks.o -ifeq ($(CONFIG_SUSPEND),y) +ifdef CONFIG_SUSPEND obj-$(CONFIG_6xx) += 6xx-suspend.o endif diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c index 5240d3a74a10..4f8dcf124828 100644 --- a/arch/powerpc/sysdev/cpm1.c +++ b/arch/powerpc/sysdev/cpm1.c @@ -38,7 +38,6 @@ #include <asm/8xx_immap.h> #include <asm/cpm1.h> #include <asm/io.h> -#include <asm/tlbflush.h> #include <asm/rheap.h> #include <asm/prom.h> #include <asm/cpm.h> diff --git a/arch/powerpc/sysdev/fsl_mpic_err.c b/arch/powerpc/sysdev/fsl_mpic_err.c index 488ec453038a..2a98837dc6ba 100644 --- a/arch/powerpc/sysdev/fsl_mpic_err.c +++ b/arch/powerpc/sysdev/fsl_mpic_err.c @@ -76,7 +76,7 @@ int mpic_setup_error_int(struct mpic *mpic, int intvec) mpic->flags |= MPIC_FSL_HAS_EIMR; /* allocate interrupt vectors for error interrupts */ for (i = MPIC_MAX_ERR - 1; i >= 0; i--) - mpic->err_int_vecs[i] = --intvec; + mpic->err_int_vecs[i] = intvec--; return 0; } diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 353b43972bbf..934a77324f6b 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -1380,12 +1380,12 @@ struct mpic * __init mpic_alloc(struct device_node *node, * global vector number space, as in case of ipis * and timer interrupts. * - * Available vector space = intvec_top - 12, where 12 + * Available vector space = intvec_top - 13, where 13 * is the number of vectors which have been consumed by - * ipis and timer interrupts. + * ipis, timer interrupts and spurious. */ if (fsl_version >= 0x401) { - ret = mpic_setup_error_int(mpic, intvec_top - 12); + ret = mpic_setup_error_int(mpic, intvec_top - 13); if (ret) return NULL; } diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c index eb69a5186243..280e964e1aa8 100644 --- a/arch/powerpc/sysdev/mpic_msgr.c +++ b/arch/powerpc/sysdev/mpic_msgr.c @@ -196,7 +196,7 @@ static int mpic_msgr_probe(struct platform_device *dev) /* IO map the message register block. */ of_address_to_resource(np, 0, &rsrc); - msgr_block_addr = ioremap(rsrc.start, rsrc.end - rsrc.start); + msgr_block_addr = ioremap(rsrc.start, resource_size(&rsrc)); if (!msgr_block_addr) { dev_err(&dev->dev, "Failed to iomap MPIC message registers"); return -EFAULT; diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c index 6243a7e537d0..e64a411d1a00 100644 --- a/arch/powerpc/sysdev/msi_bitmap.c +++ b/arch/powerpc/sysdev/msi_bitmap.c @@ -225,22 +225,23 @@ static void __init test_of_node(void) struct device_node of_node; struct property prop; struct msi_bitmap bmp; - int size = 256; - DECLARE_BITMAP(expected, size); +#define SIZE_EXPECTED 256 + DECLARE_BITMAP(expected, SIZE_EXPECTED); /* There should really be a struct device_node allocator */ memset(&of_node, 0, sizeof(of_node)); of_node_init(&of_node); of_node.full_name = node_name; - WARN_ON(msi_bitmap_alloc(&bmp, size, &of_node)); + WARN_ON(msi_bitmap_alloc(&bmp, SIZE_EXPECTED, &of_node)); /* No msi-available-ranges, so expect > 0 */ WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); /* Should all still be free */ - WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); - bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); + WARN_ON(bitmap_find_free_region(bmp.bitmap, SIZE_EXPECTED, + get_count_order(SIZE_EXPECTED))); + bitmap_release_region(bmp.bitmap, 0, get_count_order(SIZE_EXPECTED)); /* Now create a fake msi-available-ranges property */ @@ -256,8 +257,8 @@ static void __init test_of_node(void) WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp)); /* Check we got the expected result */ - WARN_ON(bitmap_parselist(expected_str, expected, size)); - WARN_ON(!bitmap_equal(expected, bmp.bitmap, size)); + WARN_ON(bitmap_parselist(expected_str, expected, SIZE_EXPECTED)); + WARN_ON(!bitmap_equal(expected, bmp.bitmap, SIZE_EXPECTED)); msi_bitmap_free(&bmp); kfree(bmp.bitmap); diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index 3459015092fa..e8f5b0551095 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -319,7 +319,7 @@ void xive_do_source_eoi(u32 hw_irq, struct xive_irq_data *xd) * The FW told us to call it. This happens for some * interrupt sources that need additional HW whacking * beyond the ESB manipulation. For example LPC interrupts - * on P9 DD1.0 need a latch to be clared in the LPC bridge + * on P9 DD1.0 needed a latch to be clared in the LPC bridge * itself. The Firmware will take care of it. */ if (WARN_ON_ONCE(!xive_ops->eoi)) @@ -337,9 +337,9 @@ void xive_do_source_eoi(u32 hw_irq, struct xive_irq_data *xd) * This allows us to then do a re-trigger if Q was set * rather than synthesizing an interrupt in software * - * For LSIs, using the HW EOI cycle works around a problem - * on P9 DD1 PHBs where the other ESB accesses don't work - * properly. + * For LSIs the HW EOI cycle is used rather than PQ bits, + * as they are automatically re-triggred in HW when still + * pending. */ if (xd->flags & XIVE_IRQ_FLAG_LSI) xive_esb_read(xd, XIVE_ESB_LOAD_EOI); @@ -1408,28 +1408,6 @@ void xive_teardown_cpu(void) xive_cleanup_cpu_queues(cpu, xc); } -void xive_kexec_teardown_cpu(int secondary) -{ - struct xive_cpu *xc = __this_cpu_read(xive_cpu); - unsigned int cpu = smp_processor_id(); - - /* Set CPPR to 0 to disable flow of interrupts */ - xc->cppr = 0; - out_8(xive_tima + xive_tima_offset + TM_CPPR, 0); - - /* Backend cleanup if any */ - if (xive_ops->teardown_cpu) - xive_ops->teardown_cpu(cpu, xc); - -#ifdef CONFIG_SMP - /* Get rid of IPI */ - xive_cleanup_cpu_ipi(cpu, xc); -#endif - - /* Disable and free the queues */ - xive_cleanup_cpu_queues(cpu, xc); -} - void xive_shutdown(void) { xive_ops->shutdown(); diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c index 311185b9960a..5b20a678d755 100644 --- a/arch/powerpc/sysdev/xive/native.c +++ b/arch/powerpc/sysdev/xive/native.c @@ -109,7 +109,7 @@ int xive_native_configure_irq(u32 hw_irq, u32 target, u8 prio, u32 sw_irq) rc = opal_xive_set_irq_config(hw_irq, target, prio, sw_irq); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } return rc == 0 ? 0 : -ENXIO; } @@ -163,7 +163,7 @@ int xive_native_configure_queue(u32 vp_id, struct xive_q *q, u8 prio, rc = opal_xive_set_queue_info(vp_id, prio, qpage_phys, order, flags); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } if (rc) { pr_err("Error %lld setting queue for prio %d\n", rc, prio); @@ -190,7 +190,7 @@ static void __xive_native_disable_queue(u32 vp_id, struct xive_q *q, u8 prio) rc = opal_xive_set_queue_info(vp_id, prio, 0, 0, 0); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } if (rc) pr_err("Error %lld disabling queue for prio %d\n", rc, prio); @@ -253,7 +253,7 @@ static int xive_native_get_ipi(unsigned int cpu, struct xive_cpu *xc) for (;;) { irq = opal_xive_allocate_irq(chip_id); if (irq == OPAL_BUSY) { - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); continue; } if (irq < 0) { @@ -275,7 +275,7 @@ u32 xive_native_alloc_irq(void) rc = opal_xive_allocate_irq(OPAL_XIVE_ANY_CHIP); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } if (rc < 0) return 0; @@ -289,7 +289,7 @@ void xive_native_free_irq(u32 irq) s64 rc = opal_xive_free_irq(irq); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } } EXPORT_SYMBOL_GPL(xive_native_free_irq); @@ -305,7 +305,7 @@ static void xive_native_put_ipi(unsigned int cpu, struct xive_cpu *xc) for (;;) { rc = opal_xive_free_irq(xc->hw_ipi); if (rc == OPAL_BUSY) { - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); continue; } xc->hw_ipi = 0; @@ -395,12 +395,11 @@ static void xive_native_setup_cpu(unsigned int cpu, struct xive_cpu *xc) /* Enable the pool VP */ vp = xive_pool_vps + cpu; - pr_debug("CPU %d setting up pool VP 0x%x\n", cpu, vp); for (;;) { rc = opal_xive_set_vp_info(vp, OPAL_XIVE_VP_ENABLED, 0); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } if (rc) { pr_err("Failed to enable pool VP on CPU %d\n", cpu); @@ -415,16 +414,9 @@ static void xive_native_setup_cpu(unsigned int cpu, struct xive_cpu *xc) } vp_cam = be64_to_cpu(vp_cam_be); - pr_debug("VP CAM = %llx\n", vp_cam); - /* Push it on the CPU (set LSMFB to 0xff to skip backlog scan) */ - pr_debug("(Old HW value: %08x)\n", - in_be32(xive_tima + TM_QW2_HV_POOL + TM_WORD2)); out_be32(xive_tima + TM_QW2_HV_POOL + TM_WORD0, 0xff); - out_be32(xive_tima + TM_QW2_HV_POOL + TM_WORD2, - TM_QW2W2_VP | vp_cam); - pr_debug("(New HW value: %08x)\n", - in_be32(xive_tima + TM_QW2_HV_POOL + TM_WORD2)); + out_be32(xive_tima + TM_QW2_HV_POOL + TM_WORD2, TM_QW2W2_VP | vp_cam); } static void xive_native_teardown_cpu(unsigned int cpu, struct xive_cpu *xc) @@ -444,7 +436,7 @@ static void xive_native_teardown_cpu(unsigned int cpu, struct xive_cpu *xc) rc = opal_xive_set_vp_info(vp, 0, 0); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } } @@ -645,7 +637,7 @@ u32 xive_native_alloc_vp_block(u32 max_vcpus) rc = opal_xive_alloc_vp_block(order); switch (rc) { case OPAL_BUSY: - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); break; case OPAL_XIVE_PROVISIONING: if (!xive_native_provision_pages()) @@ -687,7 +679,7 @@ int xive_native_enable_vp(u32 vp_id, bool single_escalation) rc = opal_xive_set_vp_info(vp_id, flags, 0); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } return rc ? -EIO : 0; } @@ -701,7 +693,7 @@ int xive_native_disable_vp(u32 vp_id) rc = opal_xive_set_vp_info(vp_id, 0, 0); if (rc != OPAL_BUSY) break; - msleep(1); + msleep(OPAL_BUSY_DELAY_MS); } return rc ? -EIO : 0; } diff --git a/arch/powerpc/tools/checkpatch.sh b/arch/powerpc/tools/checkpatch.sh new file mode 100755 index 000000000000..1fad3fb90e7c --- /dev/null +++ b/arch/powerpc/tools/checkpatch.sh @@ -0,0 +1,22 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# Copyright 2018, Michael Ellerman, IBM Corporation. +# +# Wrapper around checkpatch that uses our preferred settings + +script_base=$(realpath $(dirname $0)) + +exec $script_base/../../../scripts/checkpatch.pl \ + --subjective \ + --no-summary \ + --max-line-length=90 \ + --show-types \ + --ignore ARCH_INCLUDE_LINUX \ + --ignore BIT_MACRO \ + --ignore COMPARISON_TO_NULL \ + --ignore EMAIL_SUBJECT \ + --ignore FILE_PATH_CHANGES \ + --ignore GLOBAL_INITIALISERS \ + --ignore LINE_SPACING \ + --ignore MULTIPLE_ASSIGNMENTS \ + $@ diff --git a/arch/powerpc/xmon/spr_access.S b/arch/powerpc/xmon/spr_access.S index 4099cbcddaaa..720a52afdd58 100644 --- a/arch/powerpc/xmon/spr_access.S +++ b/arch/powerpc/xmon/spr_access.S @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ #include <asm/ppc_asm.h> +#include <asm/asm-compat.h> /* unsigned long xmon_mfspr(sprn, default_value) */ _GLOBAL(xmon_mfspr) diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 196978733e64..4264aedc7775 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -56,6 +56,7 @@ #include <asm/opal.h> #include <asm/firmware.h> #include <asm/code-patching.h> +#include <asm/sections.h> #ifdef CONFIG_PPC64 #include <asm/hvcall.h> @@ -244,6 +245,7 @@ Commands:\n\ f flush cache\n\ la lookup symbol+offset of specified address\n\ ls lookup address of specified symbol\n\ + lp s [#] lookup address of percpu symbol s for current cpu, or cpu #\n\ m examine/change memory\n\ mm move a block of memory\n\ ms set a block of memory\n\ @@ -918,13 +920,13 @@ static void remove_cpu_bpts(void) static void show_uptime(void) { - struct timespec uptime; + struct timespec64 uptime; if (setjmp(bus_error_jmp) == 0) { catch_memory_errors = 1; sync(); - get_monotonic_boottime(&uptime); + ktime_get_coarse_boottime_ts64(&uptime); printf("Uptime: %lu.%.2lu seconds\n", (unsigned long)uptime.tv_sec, ((unsigned long)uptime.tv_nsec / (NSEC_PER_SEC/100))); @@ -2429,7 +2431,6 @@ static void dump_one_paca(int cpu) DUMP(p, thread_idle_state, "%#-*x"); DUMP(p, thread_mask, "%#-*x"); DUMP(p, subcore_sibling_mask, "%#-*x"); - DUMP(p, thread_sibling_pacas, "%-*px"); DUMP(p, requested_psscr, "%#-*llx"); DUMP(p, stop_sprs.pid, "%#-*llx"); DUMP(p, stop_sprs.ldbar, "%#-*llx"); @@ -3353,7 +3354,8 @@ static void symbol_lookup(void) { int type = inchar(); - unsigned long addr; + unsigned long addr, cpu; + void __percpu *ptr = NULL; static char tmp[64]; switch (type) { @@ -3377,6 +3379,34 @@ symbol_lookup(void) catch_memory_errors = 0; termch = 0; break; + case 'p': + getstring(tmp, 64); + if (setjmp(bus_error_jmp) == 0) { + catch_memory_errors = 1; + sync(); + ptr = (void __percpu *)kallsyms_lookup_name(tmp); + sync(); + } + + if (ptr && + ptr >= (void __percpu *)__per_cpu_start && + ptr < (void __percpu *)__per_cpu_end) + { + if (scanhex(&cpu) && cpu < num_possible_cpus()) { + addr = (unsigned long)per_cpu_ptr(ptr, cpu); + } else { + cpu = raw_smp_processor_id(); + addr = (unsigned long)this_cpu_ptr(ptr); + } + + printf("%s for cpu 0x%lx: %lx\n", tmp, cpu, addr); + } else { + printf("Percpu symbol '%s' not found.\n", tmp); + } + + catch_memory_errors = 0; + termch = 0; + break; } } diff --git a/arch/x86/include/asm/pgtable-invert.h b/arch/x86/include/asm/pgtable-invert.h index 44b1203ece12..a0c1525f1b6f 100644 --- a/arch/x86/include/asm/pgtable-invert.h +++ b/arch/x86/include/asm/pgtable-invert.h @@ -4,9 +4,18 @@ #ifndef __ASSEMBLY__ +/* + * A clear pte value is special, and doesn't get inverted. + * + * Note that even users that only pass a pgprot_t (rather + * than a full pte) won't trigger the special zero case, + * because even PAGE_NONE has _PAGE_PROTNONE | _PAGE_ACCESSED + * set. So the all zero case really is limited to just the + * cleared page table entry case. + */ static inline bool __pte_needs_invert(u64 val) { - return !(val & _PAGE_PRESENT); + return val && !(val & _PAGE_PRESENT); } /* Get a mask to xor with the page table entry to get the correct pfn. */ |