projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 57d7909e DG |
1 | #ifndef _ASM_POWERPC_MMU_44X_H_ |
| 2 | #define _ASM_POWERPC_MMU_44X_H_ | |
| 3 | /* | |
| 4 | * PPC440 support | |
| 5 | */ | |
| 6 | ||
| ca9153a3 IY |
7 | #include <asm/page.h> |
| 8 | ||
| 57d7909e DG |
9 | #define PPC44x_MMUCR_TID 0x000000ff |
| 10 | #define PPC44x_MMUCR_STS 0x00010000 | |
| 11 | ||
| 12 | #define PPC44x_TLB_PAGEID 0 | |
| 13 | #define PPC44x_TLB_XLAT 1 | |
| 14 | #define PPC44x_TLB_ATTRIB 2 | |
| 15 | ||
| 16 | /* Page identification fields */ | |
| 17 | #define PPC44x_TLB_EPN_MASK 0xfffffc00 /* Effective Page Number */ | |
| 18 | #define PPC44x_TLB_VALID 0x00000200 /* Valid flag */ | |
| 19 | #define PPC44x_TLB_TS 0x00000100 /* Translation address space */ | |
| 20 | #define PPC44x_TLB_1K 0x00000000 /* Page sizes */ | |
| 21 | #define PPC44x_TLB_4K 0x00000010 | |
| 22 | #define PPC44x_TLB_16K 0x00000020 | |
| 23 | #define PPC44x_TLB_64K 0x00000030 | |
| 24 | #define PPC44x_TLB_256K 0x00000040 | |
| 25 | #define PPC44x_TLB_1M 0x00000050 | |
| 26 | #define PPC44x_TLB_16M 0x00000070 | |
| 27 | #define PPC44x_TLB_256M 0x00000090 | |
| 28 | ||
| 29 | /* Translation fields */ | |
| 30 | #define PPC44x_TLB_RPN_MASK 0xfffffc00 /* Real Page Number */ | |
| 31 | #define PPC44x_TLB_ERPN_MASK 0x0000000f | |
| 32 | ||
| 33 | /* Storage attribute and access control fields */ | |
| 34 | #define PPC44x_TLB_ATTR_MASK 0x0000ff80 | |
| 35 | #define PPC44x_TLB_U0 0x00008000 /* User 0 */ | |
| 36 | #define PPC44x_TLB_U1 0x00004000 /* User 1 */ | |
| 37 | #define PPC44x_TLB_U2 0x00002000 /* User 2 */ | |
| 38 | #define PPC44x_TLB_U3 0x00001000 /* User 3 */ | |
| 39 | #define PPC44x_TLB_W 0x00000800 /* Caching is write-through */ | |
| 40 | #define PPC44x_TLB_I 0x00000400 /* Caching is inhibited */ | |
| 41 | #define PPC44x_TLB_M 0x00000200 /* Memory is coherent */ | |
| 42 | #define PPC44x_TLB_G 0x00000100 /* Memory is guarded */ | |
| 43 | #define PPC44x_TLB_E 0x00000080 /* Memory is guarded */ | |
| 44 | ||
| 45 | #define PPC44x_TLB_PERM_MASK 0x0000003f | |
| 46 | #define PPC44x_TLB_UX 0x00000020 /* User execution */ | |
| 47 | #define PPC44x_TLB_UW 0x00000010 /* User write */ | |
| 48 | #define PPC44x_TLB_UR 0x00000008 /* User read */ | |
| 49 | #define PPC44x_TLB_SX 0x00000004 /* Super execution */ | |
| 50 | #define PPC44x_TLB_SW 0x00000002 /* Super write */ | |
| 51 | #define PPC44x_TLB_SR 0x00000001 /* Super read */ | |
| 52 | ||
| 53 | /* Number of TLB entries */ | |
| 54 | #define PPC44x_TLB_SIZE 64 | |
| 55 | ||
| 56 | #ifndef __ASSEMBLY__ | |
| 57 | ||
| 4baacfb0 | 58 | extern unsigned int tlb_44x_hwater; |
| c0ca609c | 59 | extern unsigned int tlb_44x_index; |
| 4baacfb0 | 60 | |
| 57d7909e | 61 | typedef struct { |
| 2ca8cf73 BH |
62 | unsigned int id; |
| 63 | unsigned int active; | |
| 64 | unsigned long vdso_base; | |
| 57d7909e DG |
65 | } mm_context_t; |
| 66 | ||
| 67 | #endif /* !__ASSEMBLY__ */ | |
| 68 | ||
| d9b55a03 | 69 | #ifndef CONFIG_PPC_EARLY_DEBUG_44x |
| 57d7909e | 70 | #define PPC44x_EARLY_TLBS 1 |
| d9b55a03 DG |
71 | #else |
| 72 | #define PPC44x_EARLY_TLBS 2 | |
| 73 | #define PPC44x_EARLY_DEBUG_VIRTADDR (ASM_CONST(0xf0000000) \ | |
| 74 | | (ASM_CONST(CONFIG_PPC_EARLY_DEBUG_44x_PHYSLOW) & 0xffff)) | |
| 75 | #endif | |
| 57d7909e DG |
76 | |
| 77 | /* Size of the TLBs used for pinning in lowmem */ | |
| 78 | #define PPC_PIN_SIZE (1 << 28) /* 256M */ | |
| 79 | ||
| ca9153a3 IY |
80 | #if (PAGE_SHIFT == 12) |
| 81 | #define PPC44x_TLBE_SIZE PPC44x_TLB_4K | |
| 82 | #elif (PAGE_SHIFT == 14) | |
| 83 | #define PPC44x_TLBE_SIZE PPC44x_TLB_16K | |
| 84 | #elif (PAGE_SHIFT == 16) | |
| 85 | #define PPC44x_TLBE_SIZE PPC44x_TLB_64K | |
| 86 | #else | |
| 87 | #error "Unsupported PAGE_SIZE" | |
| 88 | #endif | |
| 89 | ||
| 90 | #define PPC44x_PGD_OFF_SHIFT (32 - PGDIR_SHIFT + PGD_T_LOG2) | |
| 91 | #define PPC44x_PGD_OFF_MASK_BIT (PGDIR_SHIFT - PGD_T_LOG2) | |
| 92 | #define PPC44x_PTE_ADD_SHIFT (32 - PGDIR_SHIFT + PTE_SHIFT + PTE_T_LOG2) | |
| 93 | #define PPC44x_PTE_ADD_MASK_BIT (32 - PTE_T_LOG2 - PTE_SHIFT) | |
| 94 | ||
| 57d7909e | 95 | #endif /* _ASM_POWERPC_MMU_44X_H_ */ |