| #ifndef _ASM_POWERPC_MMU_H_ |
| #define _ASM_POWERPC_MMU_H_ |
| #ifdef __KERNEL__ |
| |
| #include <asm/asm-compat.h> |
| #include <asm/feature-fixups.h> |
| |
| /* |
| * MMU features bit definitions |
| */ |
| |
| /* |
| * First half is MMU families |
| */ |
| #define MMU_FTR_HPTE_TABLE ASM_CONST(0x00000001) |
| #define MMU_FTR_TYPE_8xx ASM_CONST(0x00000002) |
| #define MMU_FTR_TYPE_40x ASM_CONST(0x00000004) |
| #define MMU_FTR_TYPE_44x ASM_CONST(0x00000008) |
| #define MMU_FTR_TYPE_FSL_E ASM_CONST(0x00000010) |
| #define MMU_FTR_TYPE_3E ASM_CONST(0x00000020) |
| |
| /* |
| * This is individual features |
| */ |
| |
| /* Enable use of high BAT registers */ |
| #define MMU_FTR_USE_HIGH_BATS ASM_CONST(0x00010000) |
| |
| /* Enable >32-bit physical addresses on 32-bit processor, only used |
| * by CONFIG_6xx currently as BookE supports that from day 1 |
| */ |
| #define MMU_FTR_BIG_PHYS ASM_CONST(0x00020000) |
| |
| /* Enable use of broadcast TLB invalidations. We don't always set it |
| * on processors that support it due to other constraints with the |
| * use of such invalidations |
| */ |
| #define MMU_FTR_USE_TLBIVAX_BCAST ASM_CONST(0x00040000) |
| |
| /* Enable use of tlbilx invalidate instructions. |
| */ |
| #define MMU_FTR_USE_TLBILX ASM_CONST(0x00080000) |
| |
| /* This indicates that the processor cannot handle multiple outstanding |
| * broadcast tlbivax or tlbsync. This makes the code use a spinlock |
| * around such invalidate forms. |
| */ |
| #define MMU_FTR_LOCK_BCAST_INVAL ASM_CONST(0x00100000) |
| |
| /* This indicates that the processor doesn't handle way selection |
| * properly and needs SW to track and update the LRU state. This |
| * is specific to an errata on e300c2/c3/c4 class parts |
| */ |
| #define MMU_FTR_NEED_DTLB_SW_LRU ASM_CONST(0x00200000) |
| |
| /* This indicates that the processor uses the ISA 2.06 server tlbie |
| * mnemonics |
| */ |
| #define MMU_FTR_TLBIE_206 ASM_CONST(0x00400000) |
| |
| /* Enable use of TLB reservation. Processor should support tlbsrx. |
| * instruction and MAS0[WQ]. |
| */ |
| #define MMU_FTR_USE_TLBRSRV ASM_CONST(0x00800000) |
| |
| /* Use paired MAS registers (MAS7||MAS3, etc.) |
| */ |
| #define MMU_FTR_USE_PAIRED_MAS ASM_CONST(0x01000000) |
| |
| #ifndef __ASSEMBLY__ |
| #include <asm/cputable.h> |
| |
| static inline int mmu_has_feature(unsigned long feature) |
| { |
| return (cur_cpu_spec->mmu_features & feature); |
| } |
| |
| extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup; |
| |
| /* MMU initialization (64-bit only fo now) */ |
| extern void early_init_mmu(void); |
| extern void early_init_mmu_secondary(void); |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| /* The kernel use the constants below to index in the page sizes array. |
| * The use of fixed constants for this purpose is better for performances |
| * of the low level hash refill handlers. |
| * |
| * A non supported page size has a "shift" field set to 0 |
| * |
| * Any new page size being implemented can get a new entry in here. Whether |
| * the kernel will use it or not is a different matter though. The actual page |
| * size used by hugetlbfs is not defined here and may be made variable |
| * |
| * Note: This array ended up being a false good idea as it's growing to the |
| * point where I wonder if we should replace it with something different, |
| * to think about, feedback welcome. --BenH. |
| */ |
| |
| /* There are #define as they have to be used in assembly |
| * |
| * WARNING: If you change this list, make sure to update the array of |
| * names currently in arch/powerpc/mm/hugetlbpage.c or bad things will |
| * happen |
| */ |
| #define MMU_PAGE_4K 0 |
| #define MMU_PAGE_16K 1 |
| #define MMU_PAGE_64K 2 |
| #define MMU_PAGE_64K_AP 3 /* "Admixed pages" (hash64 only) */ |
| #define MMU_PAGE_256K 4 |
| #define MMU_PAGE_1M 5 |
| #define MMU_PAGE_8M 6 |
| #define MMU_PAGE_16M 7 |
| #define MMU_PAGE_256M 8 |
| #define MMU_PAGE_1G 9 |
| #define MMU_PAGE_16G 10 |
| #define MMU_PAGE_64G 11 |
| #define MMU_PAGE_COUNT 12 |
| |
| |
| #if defined(CONFIG_PPC_STD_MMU_64) |
| /* 64-bit classic hash table MMU */ |
| # include <asm/mmu-hash64.h> |
| #elif defined(CONFIG_PPC_STD_MMU_32) |
| /* 32-bit classic hash table MMU */ |
| # include <asm/mmu-hash32.h> |
| #elif defined(CONFIG_40x) |
| /* 40x-style software loaded TLB */ |
| # include <asm/mmu-40x.h> |
| #elif defined(CONFIG_44x) |
| /* 44x-style software loaded TLB */ |
| # include <asm/mmu-44x.h> |
| #elif defined(CONFIG_PPC_BOOK3E_MMU) |
| /* Freescale Book-E software loaded TLB or Book-3e (ISA 2.06+) MMU */ |
| # include <asm/mmu-book3e.h> |
| #elif defined (CONFIG_PPC_8xx) |
| /* Motorola/Freescale 8xx software loaded TLB */ |
| # include <asm/mmu-8xx.h> |
| #endif |
| |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _ASM_POWERPC_MMU_H_ */ |
