diff options
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 42 | ||||
| -rw-r--r-- | arch/mips/kernel/mips-cm.c | 52 | ||||
| -rw-r--r-- | arch/mips/kernel/process.c | 16 | ||||
| -rw-r--r-- | arch/mips/kernel/ptrace.c | 20 | ||||
| -rw-r--r-- | arch/mips/kernel/relocate.c | 10 | ||||
| -rw-r--r-- | arch/mips/kernel/smp-cps.c | 16 | ||||
| -rw-r--r-- | arch/mips/kernel/syscalls/syscall_n32.tbl | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/syscalls/syscall_n64.tbl | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/syscalls/syscall_o32.tbl | 2 |
9 files changed, 106 insertions, 56 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index af7412549e6e..04dc9ab55524 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -9,6 +9,7 @@ */ #include <linux/init.h> #include <linux/kernel.h> +#include <linux/mmu_context.h> #include <linux/ptrace.h> #include <linux/smp.h> #include <linux/stddef.h> @@ -37,6 +38,8 @@ unsigned int elf_hwcap __read_mostly; EXPORT_SYMBOL_GPL(elf_hwcap); +static bool mmid_disabled_quirk; + static inline unsigned long cpu_get_msa_id(void) { unsigned long status, msa_id; @@ -645,7 +648,7 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c) config5 &= ~(MIPS_CONF5_UFR | MIPS_CONF5_UFE); if (cpu_has_mips_r6) { - if (!__builtin_constant_p(cpu_has_mmid) || cpu_has_mmid) + if (!mmid_disabled_quirk && (!__builtin_constant_p(cpu_has_mmid) || cpu_has_mmid)) config5 |= MIPS_CONF5_MI; else config5 &= ~MIPS_CONF5_MI; @@ -708,7 +711,6 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c) max_mmid_width); asid_mask = GENMASK(max_mmid_width - 1, 0); } - set_cpu_asid_mask(c, asid_mask); } } @@ -2046,3 +2048,39 @@ void cpu_set_vpe_id(struct cpuinfo_mips *cpuinfo, unsigned int vpe) cpuinfo->globalnumber &= ~MIPS_GLOBALNUMBER_VP; cpuinfo->globalnumber |= vpe << MIPS_GLOBALNUMBER_VP_SHF; } + +void cpu_disable_mmid(void) +{ + int i; + unsigned long asid_mask; + unsigned int cpu = smp_processor_id(); + struct cpuinfo_mips *c = ¤t_cpu_data; + unsigned int config4 = read_c0_config4(); + unsigned int config5 = read_c0_config5(); + + /* Setup the initial ASID mask based on config4 */ + asid_mask = MIPS_ENTRYHI_ASID; + if (config4 & MIPS_CONF4_AE) + asid_mask |= MIPS_ENTRYHI_ASIDX; + set_cpu_asid_mask(c, asid_mask); + + /* Disable MMID in the C0 and update cpuinfo_mips accordingly */ + config5 &= ~(MIPS_CONF5_UFR | MIPS_CONF5_UFE); + config5 &= ~MIPS_CONF5_MI; + write_c0_config5(config5); + /* Ensure the write to config5 above takes effect */ + back_to_back_c0_hazard(); + c->options &= ~MIPS_CPU_MMID; + + /* Setup asid cache value cleared in per_cpu_trap_init() */ + cpu_data[cpu].asid_cache = asid_first_version(cpu); + + /* Reinit context for each CPU */ + for_each_possible_cpu(i) + set_cpu_context(i, &init_mm, 0); + + /* Ensure that now MMID will be seen as disable */ + mmid_disabled_quirk = true; + + pr_info("MMID support disabled due to hardware support issue\n"); +} diff --git a/arch/mips/kernel/mips-cm.c b/arch/mips/kernel/mips-cm.c index 43cb1e20baed..7c9c5dc38823 100644 --- a/arch/mips/kernel/mips-cm.c +++ b/arch/mips/kernel/mips-cm.c @@ -10,6 +10,7 @@ #include <linux/spinlock.h> #include <asm/mips-cps.h> +#include <asm/smp-cps.h> #include <asm/mipsregs.h> void __iomem *mips_gcr_base; @@ -248,6 +249,11 @@ void mips_cm_update_property(void) return; pr_info("HCI (Hardware Cache Init for the L2 cache) in GCR_L2_RAM_CONFIG from the CM3 is broken"); mips_cm_is_l2_hci_broken = true; + + /* Disable MMID only if it was configured */ + if (cpu_has_mmid) + cpu_disable_mmid(); + of_node_put(cm_node); } @@ -529,39 +535,23 @@ void mips_cm_error_report(void) write_gcr_error_cause(cm_error); } -unsigned int mips_cps_first_online_in_cluster(void) +unsigned int mips_cps_first_online_in_cluster(int *first_cpu) { - unsigned int local_cl; - int i; - - local_cl = cpu_cluster(¤t_cpu_data); + unsigned int local_cl = cpu_cluster(¤t_cpu_data); + struct cpumask *local_cl_mask; /* - * We rely upon knowledge that CPUs are numbered sequentially by - * cluster - ie. CPUs 0..X will be in cluster 0, CPUs X+1..Y in cluster - * 1, CPUs Y+1..Z in cluster 2 etc. This means that CPUs in the same - * cluster will immediately precede or follow one another. - * - * First we scan backwards, until we find an online CPU in the cluster - * or we move on to another cluster. + * mips_cps_cluster_bootcfg is allocated in cps_prepare_cpus. If it is + * not yet done, then we are so early that only one CPU is running, so + * it is the first online CPU in the cluster. */ - for (i = smp_processor_id() - 1; i >= 0; i--) { - if (cpu_cluster(&cpu_data[i]) != local_cl) - break; - if (!cpu_online(i)) - continue; - return false; - } - - /* Then do the same for higher numbered CPUs */ - for (i = smp_processor_id() + 1; i < nr_cpu_ids; i++) { - if (cpu_cluster(&cpu_data[i]) != local_cl) - break; - if (!cpu_online(i)) - continue; - return false; - } - - /* We found no online CPUs in the local cluster */ - return true; + if (IS_ENABLED(CONFIG_MIPS_CPS) && mips_cps_cluster_bootcfg) + local_cl_mask = &mips_cps_cluster_bootcfg[local_cl].cpumask; + else + return true; + + *first_cpu = cpumask_any_and_but(local_cl_mask, + cpu_online_mask, + smp_processor_id()); + return (*first_cpu >= nr_cpu_ids); } diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index b630604c577f..02aa6a04a21d 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -690,18 +690,20 @@ unsigned long mips_stack_top(void) } /* Space for the VDSO, data page & GIC user page */ - top -= PAGE_ALIGN(current->thread.abi->vdso->size); - top -= PAGE_SIZE; - top -= mips_gic_present() ? PAGE_SIZE : 0; + if (current->thread.abi) { + top -= PAGE_ALIGN(current->thread.abi->vdso->size); + top -= PAGE_SIZE; + top -= mips_gic_present() ? PAGE_SIZE : 0; + + /* Space to randomize the VDSO base */ + if (current->flags & PF_RANDOMIZE) + top -= VDSO_RANDOMIZE_SIZE; + } /* Space for cache colour alignment */ if (cpu_has_dc_aliases) top -= shm_align_mask + 1; - /* Space to randomize the VDSO base */ - if (current->flags & PF_RANDOMIZE) - top -= VDSO_RANDOMIZE_SIZE; - return top; } diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index b890d64d352c..3f4c94c88124 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -935,7 +935,7 @@ int regs_query_register_offset(const char *name) static const struct user_regset mips_regsets[] = { [REGSET_GPR] = { - .core_note_type = NT_PRSTATUS, + USER_REGSET_NOTE_TYPE(PRSTATUS), .n = ELF_NGREG, .size = sizeof(unsigned int), .align = sizeof(unsigned int), @@ -943,7 +943,7 @@ static const struct user_regset mips_regsets[] = { .set = gpr32_set, }, [REGSET_DSP] = { - .core_note_type = NT_MIPS_DSP, + USER_REGSET_NOTE_TYPE(MIPS_DSP), .n = NUM_DSP_REGS + 1, .size = sizeof(u32), .align = sizeof(u32), @@ -953,7 +953,7 @@ static const struct user_regset mips_regsets[] = { }, #ifdef CONFIG_MIPS_FP_SUPPORT [REGSET_FPR] = { - .core_note_type = NT_PRFPREG, + USER_REGSET_NOTE_TYPE(PRFPREG), .n = ELF_NFPREG, .size = sizeof(elf_fpreg_t), .align = sizeof(elf_fpreg_t), @@ -961,7 +961,7 @@ static const struct user_regset mips_regsets[] = { .set = fpr_set, }, [REGSET_FP_MODE] = { - .core_note_type = NT_MIPS_FP_MODE, + USER_REGSET_NOTE_TYPE(MIPS_FP_MODE), .n = 1, .size = sizeof(int), .align = sizeof(int), @@ -971,7 +971,7 @@ static const struct user_regset mips_regsets[] = { #endif #ifdef CONFIG_CPU_HAS_MSA [REGSET_MSA] = { - .core_note_type = NT_MIPS_MSA, + USER_REGSET_NOTE_TYPE(MIPS_MSA), .n = NUM_FPU_REGS + 1, .size = 16, .align = 16, @@ -995,7 +995,7 @@ static const struct user_regset_view user_mips_view = { static const struct user_regset mips64_regsets[] = { [REGSET_GPR] = { - .core_note_type = NT_PRSTATUS, + USER_REGSET_NOTE_TYPE(PRSTATUS), .n = ELF_NGREG, .size = sizeof(unsigned long), .align = sizeof(unsigned long), @@ -1003,7 +1003,7 @@ static const struct user_regset mips64_regsets[] = { .set = gpr64_set, }, [REGSET_DSP] = { - .core_note_type = NT_MIPS_DSP, + USER_REGSET_NOTE_TYPE(MIPS_DSP), .n = NUM_DSP_REGS + 1, .size = sizeof(u64), .align = sizeof(u64), @@ -1013,7 +1013,7 @@ static const struct user_regset mips64_regsets[] = { }, #ifdef CONFIG_MIPS_FP_SUPPORT [REGSET_FP_MODE] = { - .core_note_type = NT_MIPS_FP_MODE, + USER_REGSET_NOTE_TYPE(MIPS_FP_MODE), .n = 1, .size = sizeof(int), .align = sizeof(int), @@ -1021,7 +1021,7 @@ static const struct user_regset mips64_regsets[] = { .set = fp_mode_set, }, [REGSET_FPR] = { - .core_note_type = NT_PRFPREG, + USER_REGSET_NOTE_TYPE(PRFPREG), .n = ELF_NFPREG, .size = sizeof(elf_fpreg_t), .align = sizeof(elf_fpreg_t), @@ -1031,7 +1031,7 @@ static const struct user_regset mips64_regsets[] = { #endif #ifdef CONFIG_CPU_HAS_MSA [REGSET_MSA] = { - .core_note_type = NT_MIPS_MSA, + USER_REGSET_NOTE_TYPE(MIPS_MSA), .n = NUM_FPU_REGS + 1, .size = 16, .align = 16, diff --git a/arch/mips/kernel/relocate.c b/arch/mips/kernel/relocate.c index cda7983e7c18..7f1c136ad850 100644 --- a/arch/mips/kernel/relocate.c +++ b/arch/mips/kernel/relocate.c @@ -138,7 +138,7 @@ static int __init reloc_handler(u32 type, u32 *loc_orig, u32 *loc_new, apply_r_mips_hi16_rel(loc_orig, loc_new, offset); break; default: - pr_err("Unhandled relocation type %d at 0x%pK\n", type, + pr_err("Unhandled relocation type %d at 0x%p\n", type, loc_orig); return -ENOEXEC; } @@ -439,10 +439,10 @@ static void show_kernel_relocation(const char *level) { if (__kaslr_offset > 0) { printk(level); - pr_cont("Kernel relocated by 0x%pK\n", (void *)__kaslr_offset); - pr_cont(" .text @ 0x%pK\n", _text); - pr_cont(" .data @ 0x%pK\n", _sdata); - pr_cont(" .bss @ 0x%pK\n", __bss_start); + pr_cont("Kernel relocated by 0x%p\n", (void *)__kaslr_offset); + pr_cont(" .text @ 0x%p\n", _text); + pr_cont(" .data @ 0x%p\n", _sdata); + pr_cont(" .bss @ 0x%p\n", __bss_start); } } diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c index 7b0e69af4097..22d4f9ff3ae2 100644 --- a/arch/mips/kernel/smp-cps.c +++ b/arch/mips/kernel/smp-cps.c @@ -281,9 +281,20 @@ static void __init cps_smp_setup(void) #endif /* CONFIG_MIPS_MT_FPAFF */ } +unsigned long calibrate_delay_is_known(void) +{ + int first_cpu_cluster = 0; + + /* The calibration has to be done on the primary CPU of the cluster */ + if (mips_cps_first_online_in_cluster(&first_cpu_cluster)) + return 0; + + return cpu_data[first_cpu_cluster].udelay_val; +} + static void __init cps_prepare_cpus(unsigned int max_cpus) { - unsigned int nclusters, ncores, core_vpes, c, cl, cca; + unsigned int nclusters, ncores, core_vpes, nvpe = 0, c, cl, cca; bool cca_unsuitable, cores_limited; struct cluster_boot_config *cluster_bootcfg; struct core_boot_config *core_bootcfg; @@ -356,10 +367,13 @@ static void __init cps_prepare_cpus(unsigned int max_cpus) /* Allocate VPE boot configuration structs */ for (c = 0; c < ncores; c++) { + int v; core_vpes = core_vpe_count(cl, c); core_bootcfg[c].vpe_config = kcalloc(core_vpes, sizeof(*core_bootcfg[c].vpe_config), GFP_KERNEL); + for (v = 0; v < core_vpes; v++) + cpumask_set_cpu(nvpe++, &mips_cps_cluster_bootcfg[cl].cpumask); if (!core_bootcfg[c].vpe_config) goto err_out; } diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl index aa70e371bb54..d824ffe9a014 100644 --- a/arch/mips/kernel/syscalls/syscall_n32.tbl +++ b/arch/mips/kernel/syscalls/syscall_n32.tbl @@ -406,3 +406,5 @@ 465 n32 listxattrat sys_listxattrat 466 n32 removexattrat sys_removexattrat 467 n32 open_tree_attr sys_open_tree_attr +468 n32 file_getattr sys_file_getattr +469 n32 file_setattr sys_file_setattr diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl index 1e8c44c7b614..7a7049c2c307 100644 --- a/arch/mips/kernel/syscalls/syscall_n64.tbl +++ b/arch/mips/kernel/syscalls/syscall_n64.tbl @@ -382,3 +382,5 @@ 465 n64 listxattrat sys_listxattrat 466 n64 removexattrat sys_removexattrat 467 n64 open_tree_attr sys_open_tree_attr +468 n64 file_getattr sys_file_getattr +469 n64 file_setattr sys_file_setattr diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl index 114a5a1a6230..d330274f0601 100644 --- a/arch/mips/kernel/syscalls/syscall_o32.tbl +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl @@ -455,3 +455,5 @@ 465 o32 listxattrat sys_listxattrat 466 o32 removexattrat sys_removexattrat 467 o32 open_tree_attr sys_open_tree_attr +468 o32 file_getattr sys_file_getattr +469 o32 file_setattr sys_file_setattr |