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