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#ifndef __MMU_H
#define __MMU_H
#if !defined(CONFIG_MMU)
struct mm_rblock_struct {
int size;
int refcount;
void *kblock;
};
struct mm_tblock_struct {
struct mm_rblock_struct *rblock;
struct mm_tblock_struct *next;
};
typedef struct {
struct mm_tblock_struct tblock;
unsigned long end_brk;
} mm_context_t;
#else
/* Default "unsigned long" context */
typedef unsigned long 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 */
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