diff options
Diffstat (limited to 'arch/mips')
22 files changed, 67 insertions, 419 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 8e0b3702f1c0..ab98569994f0 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -431,6 +431,7 @@ config MACH_LOONGSON32 config MACH_LOONGSON64 bool "Loongson-2/3 family of machines" + select ARCH_HAS_PHYS_TO_DMA select SYS_SUPPORTS_ZBOOT help This enables the support of Loongson-2/3 family of machines. @@ -880,6 +881,7 @@ config MIKROTIK_RB532 config CAVIUM_OCTEON_SOC bool "Cavium Networks Octeon SoC based boards" select CEVT_R4K + select ARCH_HAS_PHYS_TO_DMA select ARCH_PHYS_ADDR_T_64BIT select DMA_COHERENT select SYS_SUPPORTS_64BIT_KERNEL diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig index 204a1670fd9b..b5eee1a57d6c 100644 --- a/arch/mips/cavium-octeon/Kconfig +++ b/arch/mips/cavium-octeon/Kconfig @@ -75,6 +75,7 @@ config NEED_SG_DMA_LENGTH config SWIOTLB def_bool y + select DMA_DIRECT_OPS select IOMMU_HELPER select NEED_SG_DMA_LENGTH diff --git a/arch/mips/cavium-octeon/dma-octeon.c b/arch/mips/cavium-octeon/dma-octeon.c index c64bd87f0b6e..c7bb8a407041 100644 --- a/arch/mips/cavium-octeon/dma-octeon.c +++ b/arch/mips/cavium-octeon/dma-octeon.c @@ -159,36 +159,13 @@ static void octeon_dma_sync_sg_for_device(struct device *dev, static void *octeon_dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) { - void *ret; - - /* ignore region specifiers */ - gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM); - - if (IS_ENABLED(CONFIG_ZONE_DMA) && dev == NULL) - gfp |= __GFP_DMA; - else if (IS_ENABLED(CONFIG_ZONE_DMA) && - dev->coherent_dma_mask <= DMA_BIT_MASK(24)) - gfp |= __GFP_DMA; - else if (IS_ENABLED(CONFIG_ZONE_DMA32) && - dev->coherent_dma_mask <= DMA_BIT_MASK(32)) - gfp |= __GFP_DMA32; - - /* Don't invoke OOM killer */ - gfp |= __GFP_NORETRY; - - ret = swiotlb_alloc_coherent(dev, size, dma_handle, gfp); + void *ret = swiotlb_alloc(dev, size, dma_handle, gfp, attrs); mb(); return ret; } -static void octeon_dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle, unsigned long attrs) -{ - swiotlb_free_coherent(dev, size, vaddr, dma_handle); -} - static dma_addr_t octeon_unity_phys_to_dma(struct device *dev, phys_addr_t paddr) { return paddr; @@ -228,7 +205,7 @@ EXPORT_SYMBOL(dma_to_phys); static struct octeon_dma_map_ops octeon_linear_dma_map_ops = { .dma_map_ops = { .alloc = octeon_dma_alloc_coherent, - .free = octeon_dma_free_coherent, + .free = swiotlb_free, .map_page = octeon_dma_map_page, .unmap_page = swiotlb_unmap_page, .map_sg = octeon_dma_map_sg, @@ -314,7 +291,7 @@ void __init plat_swiotlb_setup(void) static struct octeon_dma_map_ops _octeon_pci_dma_map_ops = { .dma_map_ops = { .alloc = octeon_dma_alloc_coherent, - .free = octeon_dma_free_coherent, + .free = swiotlb_free, .map_page = octeon_dma_map_page, .unmap_page = swiotlb_unmap_page, .map_sg = octeon_dma_map_sg, diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h index 49691331ada4..946681db8dc3 100644 --- a/arch/mips/include/asm/compat.h +++ b/arch/mips/include/asm/compat.h @@ -126,79 +126,6 @@ typedef u32 compat_old_sigset_t; /* at least 32 bits */ typedef u32 compat_sigset_word; -typedef union compat_sigval { - compat_int_t sival_int; - compat_uptr_t sival_ptr; -} compat_sigval_t; - -/* Can't use the generic version because si_code and si_errno are swapped */ - -#define SI_PAD_SIZE32 (128/sizeof(int) - 3) - -typedef struct compat_siginfo { - int si_signo; - int si_code; - int si_errno; - - union { - int _pad[128 / sizeof(int) - 3]; - - /* kill() */ - struct { - compat_pid_t _pid; /* sender's pid */ - __compat_uid32_t _uid; /* sender's uid */ - } _kill; - - /* POSIX.1b timers */ - struct { - compat_timer_t _tid; /* timer id */ - int _overrun; /* overrun count */ - compat_sigval_t _sigval; /* same as below */ - } _timer; - - /* POSIX.1b signals */ - struct { - compat_pid_t _pid; /* sender's pid */ - __compat_uid32_t _uid; /* sender's uid */ - compat_sigval_t _sigval; - } _rt; - - /* SIGCHLD */ - struct { - compat_pid_t _pid; /* which child */ - __compat_uid32_t _uid; /* sender's uid */ - int _status; /* exit code */ - compat_clock_t _utime; - compat_clock_t _stime; - } _sigchld; - - /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ - struct { - compat_uptr_t _addr; /* faulting insn/memory ref. */ -#ifdef __ARCH_SI_TRAPNO - int _trapno; /* TRAP # which caused the signal */ -#endif - short _addr_lsb; /* LSB of the reported address */ - struct { - compat_uptr_t _lower; - compat_uptr_t _upper; - } _addr_bnd; - } _sigfault; - - /* SIGPOLL */ - struct { - compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ - int _fd; - } _sigpoll; - - struct { - compat_uptr_t _call_addr; /* calling insn */ - int _syscall; /* triggering system call number */ - compat_uint_t _arch; /* AUDIT_ARCH_* of syscall */ - } _sigsys; - } _sifields; -} compat_siginfo_t; - #define COMPAT_OFF_T_MAX 0x7fffffff /* diff --git a/arch/mips/include/asm/dma-direct.h b/arch/mips/include/asm/dma-direct.h new file mode 100644 index 000000000000..f32f15530aba --- /dev/null +++ b/arch/mips/include/asm/dma-direct.h @@ -0,0 +1 @@ +#include <asm/dma-coherence.h> diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h index 0d9418d264f9..886e75a383f2 100644 --- a/arch/mips/include/asm/dma-mapping.h +++ b/arch/mips/include/asm/dma-mapping.h @@ -17,16 +17,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) return mips_dma_map_ops; } -static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) -{ - if (!dev->dma_mask) - return false; - - return addr + size <= *dev->dma_mask; -} - -static inline void dma_mark_clean(void *addr, size_t size) {} - #define arch_setup_dma_ops arch_setup_dma_ops static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, const struct iommu_ops *iommu, diff --git a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h index 9110988b92a1..138edf6b5b48 100644 --- a/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h +++ b/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h @@ -61,6 +61,14 @@ static inline void plat_post_dma_flush(struct device *dev) { } +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + if (!dev->dma_mask) + return false; + + return addr + size - 1 <= *dev->dma_mask; +} + dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr); phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr); diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h index 61addb1677e9..8ad7a40ca786 100644 --- a/arch/mips/include/asm/mach-generic/dma-coherence.h +++ b/arch/mips/include/asm/mach-generic/dma-coherence.h @@ -70,16 +70,4 @@ static inline void plat_post_dma_flush(struct device *dev) } #endif -#ifdef CONFIG_SWIOTLB -static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) -{ - return paddr; -} - -static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) -{ - return daddr; -} -#endif - #endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */ diff --git a/arch/mips/include/asm/mach-loongson64/dma-coherence.h b/arch/mips/include/asm/mach-loongson64/dma-coherence.h index 1602a9e9e8c2..b1b575f5c6c1 100644 --- a/arch/mips/include/asm/mach-loongson64/dma-coherence.h +++ b/arch/mips/include/asm/mach-loongson64/dma-coherence.h @@ -17,6 +17,14 @@ struct device; +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + if (!dev->dma_mask) + return false; + + return addr + size - 1 <= *dev->dma_mask; +} + extern dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr); extern phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr); static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, diff --git a/arch/mips/include/asm/netlogic/common.h b/arch/mips/include/asm/netlogic/common.h index a6e6cbebe046..57616649b4f3 100644 --- a/arch/mips/include/asm/netlogic/common.h +++ b/arch/mips/include/asm/netlogic/common.h @@ -87,9 +87,6 @@ unsigned int nlm_get_cpu_frequency(void); extern const struct plat_smp_ops nlm_smp_ops; extern char nlm_reset_entry[], nlm_reset_entry_end[]; -/* SWIOTLB */ -extern const struct dma_map_ops nlm_swiotlb_dma_ops; - extern unsigned int nlm_threads_per_core; extern cpumask_t nlm_cpumask; diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h index 5e8927f99a76..4993db40482c 100644 --- a/arch/mips/include/asm/thread_info.h +++ b/arch/mips/include/asm/thread_info.h @@ -49,9 +49,6 @@ struct thread_info { .addr_limit = KERNEL_DS, \ } -#define init_thread_info (init_thread_union.thread_info) -#define init_stack (init_thread_union.stack) - /* How to get the thread information struct from C. */ register struct thread_info *__current_thread_info __asm__("$28"); diff --git a/arch/mips/include/uapi/asm/poll.h b/arch/mips/include/uapi/asm/poll.h index ad289d7b7434..3173f8917128 100644 --- a/arch/mips/include/uapi/asm/poll.h +++ b/arch/mips/include/uapi/asm/poll.h @@ -2,8 +2,25 @@ #ifndef __ASM_POLL_H #define __ASM_POLL_H +#ifndef __KERNEL__ #define POLLWRNORM POLLOUT -#define POLLWRBAND 0x0100 +#define POLLWRBAND (__force __poll_t)0x0100 +#else +#define __ARCH_HAS_MANGLED_POLL +static inline __u16 mangle_poll(__poll_t val) +{ + __u16 v = (__force __u16)val; + /* bit 9 -> bit 8, bit 8 -> bit 2 */ + return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6); +} + +static inline __poll_t demangle_poll(__u16 v) +{ + /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ + return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | + ((v & 4) << 6)); +} +#endif #include <asm-generic/poll.h> diff --git a/arch/mips/include/uapi/asm/siginfo.h b/arch/mips/include/uapi/asm/siginfo.h index f17d8163dec6..262504bd59a5 100644 --- a/arch/mips/include/uapi/asm/siginfo.h +++ b/arch/mips/include/uapi/asm/siginfo.h @@ -14,8 +14,6 @@ #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2*sizeof(int)) #undef __ARCH_SI_TRAPNO /* exception code needs to fill this ... */ -#define HAVE_ARCH_SIGINFO_T - /* * Careful to keep union _sifields from shifting ... */ @@ -27,92 +25,10 @@ #error _MIPS_SZLONG neither 32 nor 64 #endif -#define __ARCH_SIGSYS +#define __ARCH_HAS_SWAPPED_SIGINFO #include <asm-generic/siginfo.h> -/* We can't use generic siginfo_t, because our si_code and si_errno are swapped */ -typedef struct siginfo { - int si_signo; - int si_code; - int si_errno; - int __pad0[SI_MAX_SIZE / sizeof(int) - SI_PAD_SIZE - 3]; - - union { - int _pad[SI_PAD_SIZE]; - - /* kill() */ - struct { - __kernel_pid_t _pid; /* sender's pid */ - __ARCH_SI_UID_T _uid; /* sender's uid */ - } _kill; - - /* POSIX.1b timers */ - struct { - __kernel_timer_t _tid; /* timer id */ - int _overrun; /* overrun count */ - char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)]; - sigval_t _sigval; /* same as below */ - int _sys_private; /* not to be passed to user */ - } _timer; - - /* POSIX.1b signals */ - struct { - __kernel_pid_t _pid; /* sender's pid */ - __ARCH_SI_UID_T _uid; /* sender's uid */ - sigval_t _sigval; - } _rt; - - /* SIGCHLD */ - struct { - __kernel_pid_t _pid; /* which child */ - __ARCH_SI_UID_T _uid; /* sender's uid */ - int _status; /* exit code */ - __kernel_clock_t _utime; - __kernel_clock_t _stime; - } _sigchld; - - /* IRIX SIGCHLD */ - struct { - __kernel_pid_t _pid; /* which child */ - __kernel_clock_t _utime; - int _status; /* exit code */ - __kernel_clock_t _stime; - } _irix_sigchld; - - /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ - struct { - void __user *_addr; /* faulting insn/memory ref. */ -#ifdef __ARCH_SI_TRAPNO - int _trapno; /* TRAP # which caused the signal */ -#endif - short _addr_lsb; - union { - /* used when si_code=SEGV_BNDERR */ - struct { - void __user *_lower; - void __user *_upper; - } _addr_bnd; - /* used when si_code=SEGV_PKUERR */ - __u32 _pkey; - }; - } _sigfault; - - /* SIGPOLL, SIGXFSZ (To do ...) */ - struct { - __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */ - int _fd; - } _sigpoll; - - /* SIGSYS */ - struct { - void __user *_call_addr; /* calling user insn */ - int _syscall; /* triggering system call number */ - unsigned int _arch; /* AUDIT_ARCH_* of syscall */ - } _sigsys; - } _sifields; -} siginfo_t; - /* * si_code values * Again these have been chosen to be IRIX compatible. diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c index b80dd8b17a76..bbb0f4770c0d 100644 --- a/arch/mips/kernel/rtlx.c +++ b/arch/mips/kernel/rtlx.c @@ -336,10 +336,10 @@ static int file_release(struct inode *inode, struct file *filp) return rtlx_release(iminor(inode)); } -static unsigned int file_poll(struct file *file, poll_table *wait) +static __poll_t file_poll(struct file *file, poll_table *wait) { int minor = iminor(file_inode(file)); - unsigned int mask = 0; + __poll_t mask = 0; poll_wait(file, &channel_wqs[minor].rt_queue, wait); poll_wait(file, &channel_wqs[minor].lx_queue, wait); diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index cf5c7c05e5a3..c4db910a8794 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -76,70 +76,3 @@ SYSCALL_DEFINE3(32_sigaction, long, sig, const struct compat_sigaction __user *, return ret; } - -int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) -{ - int err; - - if (!access_ok (VERIFY_WRITE, to, sizeof(compat_siginfo_t))) - return -EFAULT; - - /* If you change siginfo_t structure, please be sure - this code is fixed accordingly. - It should never copy any pad contained in the structure - to avoid security leaks, but must copy the generic - 3 ints plus the relevant union member. - This routine must convert siginfo from 64bit to 32bit as well - at the same time. */ - err = __put_user(from->si_signo, &to->si_signo); - err |= __put_user(from->si_errno, &to->si_errno); - err |= __put_user(from->si_code, &to->si_code); - if (from->si_code < 0) - err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE); - else { - switch (siginfo_layout(from->si_signo, from->si_code)) { - case SIL_TIMER: - err |= __put_user(from->si_tid, &to->si_tid); - err |= __put_user(from->si_overrun, &to->si_overrun); - err |= __put_user(from->si_int, &to->si_int); - break; - case SIL_CHLD: - err |= __put_user(from->si_utime, &to->si_utime); - err |= __put_user(from->si_stime, &to->si_stime); - err |= __put_user(from->si_status, &to->si_status); - case SIL_KILL: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - break; - case SIL_FAULT: - err |= __put_user((unsigned long)from->si_addr, &to->si_addr); - break; - case SIL_POLL: - err |= __put_user(from->si_band, &to->si_band); - err |= __put_user(from->si_fd, &to->si_fd); - break; - case SIL_RT: - err |= __put_user(from->si_pid, &to->si_pid); - err |= __put_user(from->si_uid, &to->si_uid); - err |= __put_user(from->si_int, &to->si_int); - break; - case SIL_SYS: - err |= __copy_to_user(&to->si_call_addr, &from->si_call_addr, - sizeof(compat_uptr_t)); - err |= __put_user(from->si_syscall, &to->si_syscall); - err |= __put_user(from->si_arch, &to->si_arch); - break; - } - } - return err; -} - -int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) -{ - if (copy_from_user(to, from, 3*sizeof(int)) || - copy_from_user(to->_sifields._pad, - from->_sifields._pad, SI_PAD_SIZE32)) - return -EFAULT; - - return 0; -} diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 5d19ed07e99d..0ae4a731cc12 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -699,11 +699,12 @@ static int simulate_sync(struct pt_regs *regs, unsigned int opcode) asmlinkage void do_ov(struct pt_regs *regs) { enum ctx_state prev_state; - siginfo_t info = { - .si_signo = SIGFPE, - .si_code = FPE_INTOVF, - .si_addr = (void __user *)regs->cp0_epc, - }; + siginfo_t info; + + clear_siginfo(&info); + info.si_signo = SIGFPE; + info.si_code = FPE_INTOVF; + info.si_addr = (void __user *)regs->cp0_epc; prev_state = exception_enter(); die_if_kernel("Integer overflow", regs); @@ -721,7 +722,11 @@ asmlinkage void do_ov(struct pt_regs *regs) void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, struct task_struct *tsk) { - struct siginfo si = { .si_addr = fault_addr, .si_signo = SIGFPE }; + struct siginfo si; + + clear_siginfo(&si); + si.si_addr = fault_addr; + si.si_signo = SIGFPE; if (fcr31 & FPU_CSR_INV_X) si.si_code = FPE_FLTINV; @@ -739,9 +744,10 @@ void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) { - struct siginfo si = { 0 }; + struct siginfo si; struct vm_area_struct *vma; + clear_siginfo(&si); switch (sig) { case 0: return 0; @@ -890,9 +896,10 @@ out: void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code, const char *str) { - siginfo_t info = { 0 }; + siginfo_t info; char b[40]; + clear_siginfo(&info); #ifdef CONFIG_KGDB_LOW_LEVEL_TRAP if (kgdb_ll_trap(DIE_TRAP, str, regs, code, current->thread.trap_nr, SIGTRAP) == NOTIFY_STOP) @@ -1499,9 +1506,13 @@ asmlinkage void do_mdmx(struct pt_regs *regs) */ asmlinkage void do_watch(struct pt_regs *regs) { - siginfo_t info = { .si_signo = SIGTRAP, .si_code = TRAP_HWBKPT }; + siginfo_t info; enum ctx_state prev_state; + clear_siginfo(&info); + info.si_signo = SIGTRAP; + info.si_code = TRAP_HWBKPT; + prev_state = exception_enter(); /* * Clear WP (bit 22) bit of cause register so we don't loop diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig index 0d249fc3cfe9..6f109bb54cdb 100644 --- a/arch/mips/loongson64/Kconfig +++ b/arch/mips/loongson64/Kconfig @@ -136,6 +136,7 @@ config SWIOTLB bool "Soft IOMMU Support for All-Memory DMA" default y depends on CPU_LOONGSON3 + select DMA_DIRECT_OPS select IOMMU_HELPER select NEED_SG_DMA_LENGTH select NEED_DMA_MAP_STATE diff --git a/arch/mips/loongson64/common/dma-swiotlb.c b/arch/mips/loongson64/common/dma-swiotlb.c index ef07740cee61..7bbcf89475f3 100644 --- a/arch/mips/loongson64/common/dma-swiotlb.c +++ b/arch/mips/loongson64/common/dma-swiotlb.c @@ -13,32 +13,12 @@ static void *loongson_dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) { - void *ret; + void *ret = swiotlb_alloc(dev, size, dma_handle, gfp, attrs); - /* ignore region specifiers */ - gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM); - - if ((IS_ENABLED(CONFIG_ISA) && dev == NULL) || - (IS_ENABLED(CONFIG_ZONE_DMA) && - dev->coherent_dma_mask < DMA_BIT_MASK(32))) - gfp |= __GFP_DMA; - else if (IS_ENABLED(CONFIG_ZONE_DMA32) && - dev->coherent_dma_mask < DMA_BIT_MASK(40)) - gfp |= __GFP_DMA32; - - gfp |= __GFP_NORETRY; - - ret = swiotlb_alloc_coherent(dev, size, dma_handle, gfp); mb(); return ret; } -static void loongson_dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle, unsigned long attrs) -{ - swiotlb_free_coherent(dev, size, vaddr, dma_handle); -} - static dma_addr_t loongson_dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, @@ -109,7 +89,7 @@ phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) static const struct dma_map_ops loongson_dma_map_ops = { .alloc = loongson_dma_alloc_coherent, - .free = loongson_dma_free_coherent, + .free = swiotlb_free, .map_page = loongson_dma_map_page, .unmap_page = swiotlb_unmap_page, .map_sg = loongson_dma_map_sg, diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index e3e94d05f0fd..237532e89919 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -93,9 +93,6 @@ static gfp_t massage_gfp_flags(const struct device *dev, gfp_t gfp) { gfp_t dma_flag; - /* ignore region specifiers */ - gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM); - #ifdef CONFIG_ISA if (dev == NULL) dma_flag = __GFP_DMA; diff --git a/arch/mips/netlogic/Kconfig b/arch/mips/netlogic/Kconfig index 8296b13affd2..7fcfc7fe9f14 100644 --- a/arch/mips/netlogic/Kconfig +++ b/arch/mips/netlogic/Kconfig @@ -89,9 +89,4 @@ config IOMMU_HELPER config NEED_SG_DMA_LENGTH bool -config SWIOTLB - def_bool y - select NEED_SG_DMA_LENGTH - select IOMMU_HELPER - endif diff --git a/arch/mips/netlogic/common/Makefile b/arch/mips/netlogic/common/Makefile index 60d00b5d748e..89f6e3f39fed 100644 --- a/arch/mips/netlogic/common/Makefile +++ b/arch/mips/netlogic/common/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 obj-y += irq.o time.o -obj-y += nlm-dma.o obj-y += reset.o obj-$(CONFIG_SMP) += smp.o smpboot.o obj-$(CONFIG_EARLY_PRINTK) += earlycons.o diff --git a/arch/mips/netlogic/common/nlm-dma.c b/arch/mips/netlogic/common/nlm-dma.c deleted file mode 100644 index 0ec9d9da6d51..000000000000 --- a/arch/mips/netlogic/common/nlm-dma.c +++ /dev/null @@ -1,97 +0,0 @@ -/* -* Copyright (C) 2003-2013 Broadcom Corporation -* All Rights Reserved - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the Broadcom - * license below: - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include <linux/dma-mapping.h> -#include <linux/scatterlist.h> -#include <linux/bootmem.h> -#include <linux/export.h> -#include <linux/swiotlb.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/mm.h> - -#include <asm/bootinfo.h> - -static char *nlm_swiotlb; - -static void *nlm_dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) -{ - /* ignore region specifiers */ - gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM); - -#ifdef CONFIG_ZONE_DMA32 - if (dev->coherent_dma_mask <= DMA_BIT_MASK(32)) - gfp |= __GFP_DMA32; -#endif - - /* Don't invoke OOM killer */ - gfp |= __GFP_NORETRY; - - return swiotlb_alloc_coherent(dev, size, dma_handle, gfp); -} - -static void nlm_dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle, unsigned long attrs) -{ - swiotlb_free_coherent(dev, size, vaddr, dma_handle); -} - -const struct dma_map_ops nlm_swiotlb_dma_ops = { - .alloc = nlm_dma_alloc_coherent, - .free = nlm_dma_free_coherent, - .map_page = swiotlb_map_page, - .unmap_page = swiotlb_unmap_page, - .map_sg = swiotlb_map_sg_attrs, - .unmap_sg = swiotlb_unmap_sg_attrs, - .sync_single_for_cpu = swiotlb_sync_single_for_cpu, - .sync_single_for_device = swiotlb_sync_single_for_device, - .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, - .sync_sg_for_device = swiotlb_sync_sg_for_device, - .mapping_error = swiotlb_dma_mapping_error, - .dma_supported = swiotlb_dma_supported -}; - -void __init plat_swiotlb_setup(void) -{ - size_t swiotlbsize; - unsigned long swiotlb_nslabs; - - swiotlbsize = 1 << 20; /* 1 MB for now */ - swiotlb_nslabs = swiotlbsize >> IO_TLB_SHIFT; - swiotlb_nslabs = ALIGN(swiotlb_nslabs, IO_TLB_SEGSIZE); - swiotlbsize = swiotlb_nslabs << IO_TLB_SHIFT; - - nlm_swiotlb = alloc_bootmem_low_pages(swiotlbsize); - swiotlb_init_with_tbl(nlm_swiotlb, swiotlb_nslabs, 1); -} |