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