projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __MMU_H |
| 2 | #define __MMU_H | |
| 3 | ||
| aec5e0e1 PM |
4 | /* Default "unsigned long" context */ |
| 5 | typedef unsigned long mm_context_id_t[NR_CPUS]; | |
| 1da177e4 | 6 | |
| 1da177e4 | 7 | typedef struct { |
| aec5e0e1 PM |
8 | #ifdef CONFIG_MMU |
| 9 | mm_context_id_t id; | |
| 10 | void *vdso; | |
| 11 | #else | |
| e96636cc | 12 | struct vm_list_struct *vmlist; |
| 1da177e4 | 13 | unsigned long end_brk; |
| aec5e0e1 | 14 | #endif |
| 1da177e4 LT |
15 | } mm_context_t; |
| 16 | ||
| 0c7b1df6 PM |
17 | /* |
| 18 | * Privileged Space Mapping Buffer (PMB) definitions | |
| 19 | */ | |
| 20 | #define PMB_PASCR 0xff000070 | |
| 21 | #define PMB_IRMCR 0xff000078 | |
| 22 | ||
| 23 | #define PMB_ADDR 0xf6100000 | |
| 24 | #define PMB_DATA 0xf7100000 | |
| 25 | #define PMB_ENTRY_MAX 16 | |
| 26 | #define PMB_E_MASK 0x0000000f | |
| 27 | #define PMB_E_SHIFT 8 | |
| 28 | ||
| 29 | #define PMB_SZ_16M 0x00000000 | |
| 30 | #define PMB_SZ_64M 0x00000010 | |
| 31 | #define PMB_SZ_128M 0x00000080 | |
| 32 | #define PMB_SZ_512M 0x00000090 | |
| 33 | #define PMB_SZ_MASK PMB_SZ_512M | |
| 34 | #define PMB_C 0x00000008 | |
| 35 | #define PMB_WT 0x00000001 | |
| 36 | #define PMB_UB 0x00000200 | |
| 37 | #define PMB_V 0x00000100 | |
| 38 | ||
| 39 | #define PMB_NO_ENTRY (-1) | |
| 40 | ||
| d7cdc9e8 PM |
41 | struct pmb_entry; |
| 42 | ||
| 0c7b1df6 PM |
43 | struct pmb_entry { |
| 44 | unsigned long vpn; | |
| 45 | unsigned long ppn; | |
| 46 | unsigned long flags; | |
| 47 | ||
| 48 | /* | |
| 49 | * 0 .. NR_PMB_ENTRIES for specific entry selection, or | |
| 50 | * PMB_NO_ENTRY to search for a free one | |
| 51 | */ | |
| 52 | int entry; | |
| d7cdc9e8 PM |
53 | |
| 54 | struct pmb_entry *next; | |
| 55 | /* Adjacent entry link for contiguous multi-entry mappings */ | |
| 56 | struct pmb_entry *link; | |
| 0c7b1df6 PM |
57 | }; |
| 58 | ||
| 59 | /* arch/sh/mm/pmb.c */ | |
| 60 | int __set_pmb_entry(unsigned long vpn, unsigned long ppn, | |
| 61 | unsigned long flags, int *entry); | |
| d7cdc9e8 | 62 | int set_pmb_entry(struct pmb_entry *pmbe); |
| 0c7b1df6 PM |
63 | void clear_pmb_entry(struct pmb_entry *pmbe); |
| 64 | struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn, | |
| 65 | unsigned long flags); | |
| 66 | void pmb_free(struct pmb_entry *pmbe); | |
| d7cdc9e8 PM |
67 | long pmb_remap(unsigned long virt, unsigned long phys, |
| 68 | unsigned long size, unsigned long flags); | |
| 69 | void pmb_unmap(unsigned long addr); | |
| 0c7b1df6 PM |
70 | |
| 71 | #endif /* __MMU_H */ | |
| 1da177e4 | 72 |