diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/include/asm/mdesc.h | 1 | ||||
| -rw-r--r-- | arch/sparc/kernel/mdesc.c | 24 | ||||
| -rw-r--r-- | arch/sparc/mm/init_64.c | 31 |
3 files changed, 56 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/mdesc.h b/arch/sparc/include/asm/mdesc.h index 9faa046713fb..139097f3a67b 100644 --- a/arch/sparc/include/asm/mdesc.h +++ b/arch/sparc/include/asm/mdesc.h @@ -73,6 +73,7 @@ extern void mdesc_register_notifier(struct mdesc_notifier_client *client); extern void mdesc_fill_in_cpu_data(cpumask_t *mask); extern void mdesc_populate_present_mask(cpumask_t *mask); +extern void mdesc_get_page_sizes(cpumask_t *mask, unsigned long *pgsz_mask); extern void sun4v_mdesc_init(void); diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c index 6dc796280589..831c001604e8 100644 --- a/arch/sparc/kernel/mdesc.c +++ b/arch/sparc/kernel/mdesc.c @@ -817,6 +817,30 @@ void __cpuinit mdesc_populate_present_mask(cpumask_t *mask) mdesc_iterate_over_cpus(record_one_cpu, NULL, mask); } +static void * __init check_one_pgsz(struct mdesc_handle *hp, u64 mp, int cpuid, void *arg) +{ + const u64 *pgsz_prop = mdesc_get_property(hp, mp, "mmu-page-size-list", NULL); + unsigned long *pgsz_mask = arg; + u64 val; + + val = (HV_PGSZ_MASK_8K | HV_PGSZ_MASK_64K | + HV_PGSZ_MASK_512K | HV_PGSZ_MASK_4MB); + if (pgsz_prop) + val = *pgsz_prop; + + if (!*pgsz_mask) + *pgsz_mask = val; + else + *pgsz_mask &= val; + return NULL; +} + +void __init mdesc_get_page_sizes(cpumask_t *mask, unsigned long *pgsz_mask) +{ + *pgsz_mask = 0; + mdesc_iterate_over_cpus(check_one_pgsz, pgsz_mask, mask); +} + static void * __cpuinit fill_in_one_cpu(struct mdesc_handle *hp, u64 mp, int cpuid, void *arg) { const u64 *cfreq = mdesc_get_property(hp, mp, "clock-frequency", NULL); diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index c0fc25be0c51..445369132e03 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -83,6 +83,8 @@ unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)]; extern struct tsb swapper_4m_tsb[KERNEL_TSB4M_NENTRIES]; #endif +static unsigned long cpu_pgsz_mask; + #define MAX_BANKS 32 static struct linux_prom64_registers pavail[MAX_BANKS] __devinitdata; @@ -419,6 +421,12 @@ EXPORT_SYMBOL(flush_icache_range); void mmu_info(struct seq_file *m) { + static const char *pgsz_strings[] = { + "8K", "64K", "512K", "4MB", "32MB", + "256MB", "2GB", "16GB", + }; + int i, printed; + if (tlb_type == cheetah) seq_printf(m, "MMU Type\t: Cheetah\n"); else if (tlb_type == cheetah_plus) @@ -430,6 +438,17 @@ void mmu_info(struct seq_file *m) else seq_printf(m, "MMU Type\t: ???\n"); + seq_printf(m, "MMU PGSZs\t: "); + printed = 0; + for (i = 0; i < ARRAY_SIZE(pgsz_strings); i++) { + if (cpu_pgsz_mask & (1UL << i)) { + seq_printf(m, "%s%s", + printed ? "," : "", pgsz_strings[i]); + printed++; + } + } + seq_putc(m, '\n'); + #ifdef CONFIG_DEBUG_DCFLUSH seq_printf(m, "DCPageFlushes\t: %d\n", atomic_read(&dcpage_flushes)); @@ -1803,6 +1822,18 @@ void __init paging_init(void) #ifndef CONFIG_SMP mdesc_fill_in_cpu_data(cpu_all_mask); #endif + mdesc_get_page_sizes(cpu_all_mask, &cpu_pgsz_mask); + } else { + unsigned long impl, ver; + + cpu_pgsz_mask = (HV_PGSZ_MASK_8K | HV_PGSZ_MASK_64K | + HV_PGSZ_MASK_512K | HV_PGSZ_MASK_4MB); + + __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver)); + impl = ((ver >> 32) & 0xffff); + if (impl == PANTHER_IMPL) + cpu_pgsz_mask |= (HV_PGSZ_MASK_32MB | + HV_PGSZ_MASK_256MB); } /* Setup bootmem... */ |