1 #ifndef __MMU_H 2 #define __MMU_H 3 4 /* 5 * Privileged Space Mapping Buffer (PMB) definitions 6 */ 7 #define PMB_PASCR 0xff000070 8 #define PMB_IRMCR 0xff000078 9 10 #define PMB_ADDR 0xf6100000 11 #define PMB_DATA 0xf7100000 12 #define PMB_ENTRY_MAX 16 13 #define PMB_E_MASK 0x0000000f 14 #define PMB_E_SHIFT 8 15 16 #define PMB_SZ_16M 0x00000000 17 #define PMB_SZ_64M 0x00000010 18 #define PMB_SZ_128M 0x00000080 19 #define PMB_SZ_512M 0x00000090 20 #define PMB_SZ_MASK PMB_SZ_512M 21 #define PMB_C 0x00000008 22 #define PMB_WT 0x00000001 23 #define PMB_UB 0x00000200 24 #define PMB_V 0x00000100 25 26 #define PMB_NO_ENTRY (-1) 27 28 #ifndef __ASSEMBLY__ 29 30 /* Default "unsigned long" context */ 31 typedef unsigned long mm_context_id_t[NR_CPUS]; 32 33 typedef struct { 34 #ifdef CONFIG_MMU 35 mm_context_id_t id; 36 void *vdso; 37 #else 38 unsigned long end_brk; 39 #endif 40 #ifdef CONFIG_BINFMT_ELF_FDPIC 41 unsigned long exec_fdpic_loadmap; 42 unsigned long interp_fdpic_loadmap; 43 #endif 44 } mm_context_t; 45 46 struct pmb_entry; 47 48 struct pmb_entry { 49 unsigned long vpn; 50 unsigned long ppn; 51 unsigned long flags; 52 53 /* 54 * 0 .. NR_PMB_ENTRIES for specific entry selection, or 55 * PMB_NO_ENTRY to search for a free one 56 */ 57 int entry; 58 59 struct pmb_entry *next; 60 /* Adjacent entry link for contiguous multi-entry mappings */ 61 struct pmb_entry *link; 62 }; 63 64 /* arch/sh/mm/pmb.c */ 65 int __set_pmb_entry(unsigned long vpn, unsigned long ppn, 66 unsigned long flags, int *entry); 67 int set_pmb_entry(struct pmb_entry *pmbe); 68 void clear_pmb_entry(struct pmb_entry *pmbe); 69 struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn, 70 unsigned long flags); 71 void pmb_free(struct pmb_entry *pmbe); 72 long pmb_remap(unsigned long virt, unsigned long phys, 73 unsigned long size, unsigned long flags); 74 void pmb_unmap(unsigned long addr); 75 #endif /* __ASSEMBLY__ */ 76 77 #endif /* __MMU_H */ 78 79