diff options
Diffstat (limited to '')
-rw-r--r-- | arch/powerpc/mm/nohash/tlb.c | 99 |
1 files changed, 27 insertions, 72 deletions
diff --git a/arch/powerpc/mm/nohash/tlb.c b/arch/powerpc/mm/nohash/tlb.c index 647bf454a0fa..2c15c86c7015 100644 --- a/arch/powerpc/mm/nohash/tlb.c +++ b/arch/powerpc/mm/nohash/tlb.c @@ -49,8 +49,7 @@ * other sizes not listed here. The .ind field is only used on MMUs that have * indirect page table entries. */ -#if defined(CONFIG_PPC_BOOK3E_MMU) || defined(CONFIG_PPC_8xx) -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { [MMU_PAGE_4K] = { .shift = 12, @@ -81,7 +80,20 @@ struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { .enc = BOOK3E_PAGESZ_1GB, }, }; -#elif defined(CONFIG_PPC_8xx) + +static inline int mmu_get_tsize(int psize) +{ + return mmu_psize_defs[psize].enc; +} +#else +static inline int mmu_get_tsize(int psize) +{ + /* This isn't used on !Book3E for now */ + return 0; +} +#endif + +#ifdef CONFIG_PPC_8xx struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { [MMU_PAGE_4K] = { .shift = 12, @@ -96,53 +108,7 @@ struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { .shift = 23, }, }; -#else -struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { - [MMU_PAGE_4K] = { - .shift = 12, - .ind = 20, - .enc = BOOK3E_PAGESZ_4K, - }, - [MMU_PAGE_16K] = { - .shift = 14, - .enc = BOOK3E_PAGESZ_16K, - }, - [MMU_PAGE_64K] = { - .shift = 16, - .ind = 28, - .enc = BOOK3E_PAGESZ_64K, - }, - [MMU_PAGE_1M] = { - .shift = 20, - .enc = BOOK3E_PAGESZ_1M, - }, - [MMU_PAGE_16M] = { - .shift = 24, - .ind = 36, - .enc = BOOK3E_PAGESZ_16M, - }, - [MMU_PAGE_256M] = { - .shift = 28, - .enc = BOOK3E_PAGESZ_256M, - }, - [MMU_PAGE_1G] = { - .shift = 30, - .enc = BOOK3E_PAGESZ_1GB, - }, -}; -#endif /* CONFIG_FSL_BOOKE */ - -static inline int mmu_get_tsize(int psize) -{ - return mmu_psize_defs[psize].enc; -} -#else -static inline int mmu_get_tsize(int psize) -{ - /* This isn't used on !Book3E for now */ - return 0; -} -#endif /* CONFIG_PPC_BOOK3E_MMU */ +#endif /* The variables below are currently only used on 64-bit Book3E * though this will probably be made common with other nohash @@ -150,7 +116,6 @@ static inline int mmu_get_tsize(int psize) */ #ifdef CONFIG_PPC64 -int mmu_linear_psize; /* Page size used for the linear mapping */ int mmu_pte_psize; /* Page size used for PTE pages */ int mmu_vmemmap_psize; /* Page size used for the virtual mem map */ int book3e_htw_mode; /* HW tablewalk? Value is PPC_HTW_* */ @@ -167,7 +132,7 @@ int extlb_level_exc; #endif /* CONFIG_PPC64 */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 /* next_tlbcam_idx is used to round-robin tlbcam entry assignment */ DEFINE_PER_CPU(int, next_tlbcam_idx); EXPORT_PER_CPU_SYMBOL(next_tlbcam_idx); @@ -359,6 +324,7 @@ void __init early_init_mmu_47x(void) /* * Flush kernel TLB entries in the given range */ +#ifndef CONFIG_PPC_8xx void flush_tlb_kernel_range(unsigned long start, unsigned long end) { #ifdef CONFIG_SMP @@ -371,6 +337,7 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end) #endif } EXPORT_SYMBOL(flush_tlb_kernel_range); +#endif /* * Currently, for range flushing, we just do a full mm flush. This should @@ -433,14 +400,14 @@ void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address) } } -static void setup_page_sizes(void) +static void __init setup_page_sizes(void) { unsigned int tlb0cfg; unsigned int tlb0ps; unsigned int eptcfg; int i, psize; -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 unsigned int mmucfg = mfspr(SPRN_MMUCFG); int fsl_mmu = mmu_has_feature(MMU_FTR_TYPE_FSL_E); @@ -571,7 +538,7 @@ out: } } -static void setup_mmu_htw(void) +static void __init setup_mmu_htw(void) { /* * If we want to use HW tablewalk, enable it by patching the TLB miss @@ -583,7 +550,7 @@ static void setup_mmu_htw(void) patch_exception(0x1c0, exc_data_tlb_miss_htw_book3e); patch_exception(0x1e0, exc_instruction_tlb_miss_htw_book3e); break; -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 case PPC_HTW_E6500: extlb_level_exc = EX_TLB_SIZE; patch_exception(0x1c0, exc_data_tlb_miss_e6500_book3e); @@ -626,7 +593,7 @@ static void early_init_this_mmu(void) } mtspr(SPRN_MAS4, mas4); -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) { unsigned int num_cams; bool map = true; @@ -657,14 +624,6 @@ static void early_init_this_mmu(void) static void __init early_init_mmu_global(void) { - /* XXX This will have to be decided at runtime, but right - * now our boot and TLB miss code hard wires it. Ideally - * we should find out a suitable page size and patch the - * TLB miss code (either that or use the PACA to store - * the value we want) - */ - mmu_linear_psize = MMU_PAGE_1G; - /* XXX This should be decided at runtime based on supported * page sizes in the TLB, but for now let's assume 16M is * always there and a good fit (which it probably is) @@ -687,7 +646,7 @@ static void __init early_init_mmu_global(void) /* Look for HW tablewalk support */ setup_mmu_htw(); -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) { if (book3e_htw_mode == PPC_HTW_NONE) { extlb_level_exc = EX_TLB_SIZE; @@ -708,7 +667,7 @@ static void __init early_init_mmu_global(void) static void __init early_mmu_set_memory_limit(void) { -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) { /* * Limit memory so we dont have linear faults. @@ -757,7 +716,7 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base, * We crop it to the size of the first MEMBLOCK to * avoid going over total available memory just in case... */ -#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC_E500 if (early_mmu_has_feature(MMU_FTR_TYPE_FSL_E)) { unsigned long linear_sz; unsigned int num_cams; @@ -782,9 +741,5 @@ void __init early_init_mmu(void) #ifdef CONFIG_PPC_47x early_init_mmu_47x(); #endif - -#ifdef CONFIG_PPC_MM_SLICES - mm_ctx_set_slb_addr_limit(&init_mm.context, SLB_ADDR_LIMIT_DEFAULT); -#endif } #endif /* CONFIG_PPC64 */ |