projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4db68bfe DG |
1 | #ifndef _ASM_POWERPC_MMU_HASH32_H_ |
| 2 | #define _ASM_POWERPC_MMU_HASH32_H_ | |
| 3 | /* | |
| 4 | * 32-bit hash table MMU support | |
| 5 | */ | |
| 6 | ||
| 7 | /* | |
| 8 | * BATs | |
| 9 | */ | |
| 10 | ||
| 11 | /* Block size masks */ | |
| 12 | #define BL_128K 0x000 | |
| 13 | #define BL_256K 0x001 | |
| 14 | #define BL_512K 0x003 | |
| 15 | #define BL_1M 0x007 | |
| 16 | #define BL_2M 0x00F | |
| 17 | #define BL_4M 0x01F | |
| 18 | #define BL_8M 0x03F | |
| 19 | #define BL_16M 0x07F | |
| 20 | #define BL_32M 0x0FF | |
| 21 | #define BL_64M 0x1FF | |
| 22 | #define BL_128M 0x3FF | |
| 23 | #define BL_256M 0x7FF | |
| 24 | ||
| 25 | /* BAT Access Protection */ | |
| 26 | #define BPP_XX 0x00 /* No access */ | |
| 27 | #define BPP_RX 0x01 /* Read only */ | |
| 28 | #define BPP_RW 0x02 /* Read/write */ | |
| 29 | ||
| 30 | #ifndef __ASSEMBLY__ | |
| 7c5c4325 BB |
31 | /* Contort a phys_addr_t into the right format/bits for a BAT */ |
| 32 | #ifdef CONFIG_PHYS_64BIT | |
| 33 | #define BAT_PHYS_ADDR(x) ((u32)((x & 0x00000000fffe0000ULL) | \ | |
| 34 | ((x & 0x0000000e00000000ULL) >> 24) | \ | |
| 35 | ((x & 0x0000000100000000ULL) >> 30))) | |
| 36 | #else | |
| 37 | #define BAT_PHYS_ADDR(x) (x) | |
| 38 | #endif | |
| 39 | ||
| 8e561e7e | 40 | struct ppc_bat { |
| 316a4058 BB |
41 | u32 batu; |
| 42 | u32 batl; | |
| 8e561e7e | 43 | }; |
| 4db68bfe DG |
44 | #endif /* !__ASSEMBLY__ */ |
| 45 | ||
| 46 | /* | |
| 47 | * Hash table | |
| 48 | */ | |
| 49 | ||
| 50 | /* Values for PP (assumes Ks=0, Kp=1) */ | |
| 51 | #define PP_RWXX 0 /* Supervisor read/write, User none */ | |
| 52 | #define PP_RWRX 1 /* Supervisor read/write, User read */ | |
| 53 | #define PP_RWRW 2 /* Supervisor read/write, User read/write */ | |
| 54 | #define PP_RXRX 3 /* Supervisor read, User read */ | |
| 55 | ||
| 56 | #ifndef __ASSEMBLY__ | |
| 57 | ||
| e3e1d158 BB |
58 | /* |
| 59 | * Hardware Page Table Entry | |
| 60 | * Note that the xpn and x bitfields are used only by processors that | |
| 61 | * support extended addressing; otherwise, those bits are reserved. | |
| 62 | */ | |
| 8e561e7e | 63 | struct hash_pte { |
| 4db68bfe DG |
64 | unsigned long v:1; /* Entry is valid */ |
| 65 | unsigned long vsid:24; /* Virtual segment identifier */ | |
| 66 | unsigned long h:1; /* Hash algorithm indicator */ | |
| 67 | unsigned long api:6; /* Abbreviated page index */ | |
| 68 | unsigned long rpn:20; /* Real (physical) page number */ | |
| e3e1d158 | 69 | unsigned long xpn:3; /* Real page number bits 0-2, optional */ |
| 4db68bfe DG |
70 | unsigned long r:1; /* Referenced */ |
| 71 | unsigned long c:1; /* Changed */ | |
| 72 | unsigned long w:1; /* Write-thru cache mode */ | |
| 73 | unsigned long i:1; /* Cache inhibited */ | |
| 74 | unsigned long m:1; /* Memory coherence */ | |
| 75 | unsigned long g:1; /* Guarded */ | |
| e3e1d158 | 76 | unsigned long x:1; /* Real page number bit 3, optional */ |
| 4db68bfe | 77 | unsigned long pp:2; /* Page protection */ |
| 8e561e7e | 78 | }; |
| 4db68bfe DG |
79 | |
| 80 | typedef struct { | |
| 81 | unsigned long id; | |
| 82 | unsigned long vdso_base; | |
| 83 | } mm_context_t; | |
| 84 | ||
| 4db68bfe DG |
85 | #endif /* !__ASSEMBLY__ */ |
| 86 | ||
| 25d21ad6 BH |
87 | /* We happily ignore the smaller BATs on 601, we don't actually use |
| 88 | * those definitions on hash32 at the moment anyway | |
| 89 | */ | |
| 90 | #define mmu_virtual_psize MMU_PAGE_4K | |
| 91 | #define mmu_linear_psize MMU_PAGE_256M | |
| 92 | ||
| 4db68bfe | 93 | #endif /* _ASM_POWERPC_MMU_HASH32_H_ */ |