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 PASCR_SE 0x80000000 11 12 #define PMB_ADDR 0xf6100000 13 #define PMB_DATA 0xf7100000 14 #define PMB_ENTRY_MAX 16 15 #define PMB_E_MASK 0x0000000f 16 #define PMB_E_SHIFT 8 17 18 #define PMB_PFN_MASK 0xff000000 19 20 #define PMB_SZ_16M 0x00000000 21 #define PMB_SZ_64M 0x00000010 22 #define PMB_SZ_128M 0x00000080 23 #define PMB_SZ_512M 0x00000090 24 #define PMB_SZ_MASK PMB_SZ_512M 25 #define PMB_C 0x00000008 26 #define PMB_WT 0x00000001 27 #define PMB_UB 0x00000200 28 #define PMB_V 0x00000100 29 30 #define PMB_NO_ENTRY (-1) 31 32 #ifndef __ASSEMBLY__ 33 34 /* Default "unsigned long" context */ 35 typedef unsigned long mm_context_id_t[NR_CPUS]; 36 37 typedef struct { 38 #ifdef CONFIG_MMU 39 mm_context_id_t id; 40 void *vdso; 41 #else 42 unsigned long end_brk; 43 #endif 44 #ifdef CONFIG_BINFMT_ELF_FDPIC 45 unsigned long exec_fdpic_loadmap; 46 unsigned long interp_fdpic_loadmap; 47 #endif 48 } mm_context_t; 49 50 struct pmb_entry; 51 52 struct pmb_entry { 53 unsigned long vpn; 54 unsigned long ppn; 55 unsigned long flags; 56 57 /* 58 * 0 .. NR_PMB_ENTRIES for specific entry selection, or 59 * PMB_NO_ENTRY to search for a free one 60 */ 61 int entry; 62 63 struct pmb_entry *next; 64 /* Adjacent entry link for contiguous multi-entry mappings */ 65 struct pmb_entry *link; 66 }; 67 68 /* arch/sh/mm/pmb.c */ 69 long pmb_remap(unsigned long virt, unsigned long phys, 70 unsigned long size, unsigned long flags); 71 void pmb_unmap(unsigned long addr); 72 int pmb_init(void); 73 #endif /* __ASSEMBLY__ */ 74 75 #endif /* __MMU_H */ 76