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author | Ingo Molnar <mingo@elte.hu> | 2008-08-13 13:08:47 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-08-13 13:08:47 +0200 |
commit | a12e61df4fa1cfae7a6b76976fa65a6fcb048e3f (patch) | |
tree | 957c915298b299902aa80afa7c78e94c71b3dc25 /arch/sh/include/asm/mmu.h | |
parent | x86: fix setup code crashes on my old 486 box (diff) | |
parent | Linux 2.6.27-rc3 (diff) | |
download | linux-a12e61df4fa1cfae7a6b76976fa65a6fcb048e3f.tar.xz linux-a12e61df4fa1cfae7a6b76976fa65a6fcb048e3f.zip |
Merge commit 'v2.6.27-rc3' into x86/urgent
Diffstat (limited to 'arch/sh/include/asm/mmu.h')
-rw-r--r-- | arch/sh/include/asm/mmu.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/sh/include/asm/mmu.h b/arch/sh/include/asm/mmu.h new file mode 100644 index 000000000000..fdcb93bc6d11 --- /dev/null +++ b/arch/sh/include/asm/mmu.h @@ -0,0 +1,76 @@ +#ifndef __MMU_H +#define __MMU_H + +/* Default "unsigned long" context */ +typedef unsigned long mm_context_id_t[NR_CPUS]; + +typedef struct { +#ifdef CONFIG_MMU + mm_context_id_t id; + void *vdso; +#else + struct vm_list_struct *vmlist; + unsigned long end_brk; +#endif +#ifdef CONFIG_BINFMT_ELF_FDPIC + unsigned long exec_fdpic_loadmap; + unsigned long interp_fdpic_loadmap; +#endif +} mm_context_t; + +/* + * 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 */ + |