[linux-2.6-block.git] / include / asm-sh / mmu.h

#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_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 */
Commit	Line	Data
1da177e4 LT	1	#ifndef __MMU_H
	2	#define __MMU_H
	3
	4	#if !defined(CONFIG_MMU)
	5
1da177e4	6	typedef struct {
e96636cc	7	struct vm_list_struct *vmlist;
1da177e4 LT	8	unsigned long end_brk;
	9	} mm_context_t;
	10
	11	#else
	12
	13	/* Default "unsigned long" context */
	14	typedef unsigned long mm_context_t;
	15
	16	#endif /* CONFIG_MMU */
0c7b1df6 PM	17
	18	/*
	19	* Privileged Space Mapping Buffer (PMB) definitions
	20	*/
	21	#define PMB_PASCR 0xff000070
	22	#define PMB_IRMCR 0xff000078
	23
	24	#define PMB_ADDR 0xf6100000
	25	#define PMB_DATA 0xf7100000
	26	#define PMB_ENTRY_MAX 16
	27	#define PMB_E_MASK 0x0000000f
	28	#define PMB_E_SHIFT 8
	29
	30	#define PMB_SZ_16M 0x00000000
	31	#define PMB_SZ_64M 0x00000010
	32	#define PMB_SZ_128M 0x00000080
	33	#define PMB_SZ_512M 0x00000090
	34	#define PMB_SZ_MASK PMB_SZ_512M
	35	#define PMB_C 0x00000008
	36	#define PMB_WT 0x00000001
	37	#define PMB_UB 0x00000200
	38	#define PMB_V 0x00000100
	39
	40	#define PMB_NO_ENTRY (-1)
	41
d7cdc9e8 PM	42	struct pmb_entry;
d7cdc9e8 PM	43
0c7b1df6 PM	44	struct pmb_entry {
	45	unsigned long vpn;
	46	unsigned long ppn;
	47	unsigned long flags;
	48
	49	/*
	50	* 0 .. NR_PMB_ENTRIES for specific entry selection, or
	51	* PMB_NO_ENTRY to search for a free one
	52	*/
	53	int entry;
d7cdc9e8 PM	54
	55	struct pmb_entry *next;
	56	/* Adjacent entry link for contiguous multi-entry mappings */
	57	struct pmb_entry *link;
0c7b1df6 PM	58	};
	59
	60	/* arch/sh/mm/pmb.c */
	61	int __set_pmb_entry(unsigned long vpn, unsigned long ppn,
	62	unsigned long flags, int *entry);
d7cdc9e8	63	int set_pmb_entry(struct pmb_entry *pmbe);
0c7b1df6 PM	64	void clear_pmb_entry(struct pmb_entry *pmbe);
	65	struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
	66	unsigned long flags);
	67	void pmb_free(struct pmb_entry *pmbe);
d7cdc9e8 PM	68	long pmb_remap(unsigned long virt, unsigned long phys,
	69	unsigned long size, unsigned long flags);
	70	void pmb_unmap(unsigned long addr);
0c7b1df6 PM	71
0c7b1df6 PM	72	#endif /* __MMU_H */
1da177e4	73