| #ifndef __MMU_H |
| #define __MMU_H |
| |
| #if !defined(CONFIG_MMU) |
| |
| typedef struct { |
| struct vm_list_struct *vmlist; |
| unsigned long end_brk; |
| } mm_context_t; |
| |
| #else |
| |
| /* Default "unsigned long" context */ |
| typedef unsigned long mm_context_id_t; |
| |
| typedef struct { |
| mm_context_id_t id; |
| void *vdso; |
| } mm_context_t; |
| |
| #endif /* CONFIG_MMU */ |
| |
| /* |
| * Privileged Space Mapping Buffer (PMB) definitions |
| */ |
| #define PMB_PASCR 0xff000070 |
| #define PMB_IRMCR 0xff000078 |
| |
| #define PMB_ADDR 0xf6100000 |
| #define PMB_DATA 0xf7100000 |
| #define PMB_ENTRY_MAX 16 |
| #define PMB_E_MASK 0x0000000f |
| #define PMB_E_SHIFT 8 |
| |
| #define PMB_SZ_16M 0x00000000 |
| #define PMB_SZ_64M 0x00000010 |
| #define PMB_SZ_128M 0x00000080 |
| #define PMB_SZ_512M 0x00000090 |
| #define PMB_SZ_MASK PMB_SZ_512M |
| #define PMB_C 0x00000008 |
| #define PMB_WT 0x00000001 |
| #define PMB_UB 0x00000200 |
| #define PMB_V 0x00000100 |
| |
| #define PMB_NO_ENTRY (-1) |
| |
| struct pmb_entry; |
| |
| struct pmb_entry { |
| unsigned long vpn; |
| unsigned long ppn; |
| unsigned long flags; |
| |
| /* |
| * 0 .. NR_PMB_ENTRIES for specific entry selection, or |
| * PMB_NO_ENTRY to search for a free one |
| */ |
| int entry; |
| |
| struct pmb_entry *next; |
| /* Adjacent entry link for contiguous multi-entry mappings */ |
| struct pmb_entry *link; |
| }; |
| |
| /* arch/sh/mm/pmb.c */ |
| int __set_pmb_entry(unsigned long vpn, unsigned long ppn, |
| unsigned long flags, int *entry); |
| int set_pmb_entry(struct pmb_entry *pmbe); |
| void clear_pmb_entry(struct pmb_entry *pmbe); |
| struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn, |
| unsigned long flags); |
| void pmb_free(struct pmb_entry *pmbe); |
| long pmb_remap(unsigned long virt, unsigned long phys, |
| unsigned long size, unsigned long flags); |
| void pmb_unmap(unsigned long addr); |
| |
| #endif /* __MMU_H */ |
| |