[deliverable/linux.git] / arch / sh / include / asm / mmu.h

#ifndef __MMU_H
#define __MMU_H

/*
 * Privileged Space Mapping Buffer (PMB) definitions
 */
#define PMB_PASCR		0xff000070
#define PMB_IRMCR		0xff000078

#define PASCR_SE		0x80000000

#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_PFN_MASK		0xff000000

#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)

#ifndef __ASSEMBLY__
#include <linux/errno.h>
#include <linux/threads.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
	unsigned long		end_brk;
#endif
#ifdef CONFIG_BINFMT_ELF_FDPIC
	unsigned long		exec_fdpic_loadmap;
	unsigned long		interp_fdpic_loadmap;
#endif
} mm_context_t;

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;
};

#ifdef CONFIG_PMB
/* arch/sh/mm/pmb.c */
long pmb_remap(unsigned long virt, unsigned long phys,
	       unsigned long size, unsigned long flags);
void pmb_unmap(unsigned long addr);
int pmb_init(void);
bool __in_29bit_mode(void);
#else
static inline long pmb_remap(unsigned long virt, unsigned long phys,
			     unsigned long size, unsigned long flags)
{
	return -EINVAL;
}

static inline void pmb_unmap(unsigned long addr)
{
}

static inline int pmb_init(void)
{
	return -ENODEV;
}

#ifdef CONFIG_29BIT
#define __in_29bit_mode()	(1)
#else
#define __in_29bit_mode()	(0)
#endif

#endif /* CONFIG_PMB */
#endif /* __ASSEMBLY__ */

#endif /* __MMU_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __MMU_H
	2	#define __MMU_H
	3
0c7b1df6 PM	4	/*
	5	* Privileged Space Mapping Buffer (PMB) definitions
	6	*/
	7	#define PMB_PASCR 0xff000070
	8	#define PMB_IRMCR 0xff000078
	9
1f69b6af MF	10	#define PASCR_SE 0x80000000
1f69b6af MF	11
0c7b1df6 PM	12	#define PMB_ADDR 0xf6100000
	13	#define PMB_DATA 0xf7100000
	14	#define PMB_ENTRY_MAX 16
	15	#define PMB_E_MASK 0x0000000f
	16	#define PMB_E_SHIFT 8
	17
20b5014b MF	18	#define PMB_PFN_MASK 0xff000000
20b5014b MF	19
0c7b1df6 PM	20	#define PMB_SZ_16M 0x00000000
	21	#define PMB_SZ_64M 0x00000010
	22	#define PMB_SZ_128M 0x00000080
	23	#define PMB_SZ_512M 0x00000090
	24	#define PMB_SZ_MASK PMB_SZ_512M
	25	#define PMB_C 0x00000008
	26	#define PMB_WT 0x00000001
	27	#define PMB_UB 0x00000200
	28	#define PMB_V 0x00000100
	29
	30	#define PMB_NO_ENTRY (-1)
	31
3b4df71b	32	#ifndef __ASSEMBLY__
46c4e5da	33	#include <linux/errno.h>
2efa53b2	34	#include <linux/threads.h>
3b4df71b FV	35
	36	/* Default "unsigned long" context */
	37	typedef unsigned long mm_context_id_t[NR_CPUS];
	38
	39	typedef struct {
	40	#ifdef CONFIG_MMU
	41	mm_context_id_t id;
	42	void *vdso;
	43	#else
	44	unsigned long end_brk;
	45	#endif
	46	#ifdef CONFIG_BINFMT_ELF_FDPIC
	47	unsigned long exec_fdpic_loadmap;
	48	unsigned long interp_fdpic_loadmap;
	49	#endif
	50	} mm_context_t;
	51
d7cdc9e8 PM	52	struct pmb_entry;
d7cdc9e8 PM	53
0c7b1df6 PM	54	struct pmb_entry {
	55	unsigned long vpn;
	56	unsigned long ppn;
	57	unsigned long flags;
	58
	59	/*
	60	* 0 .. NR_PMB_ENTRIES for specific entry selection, or
	61	* PMB_NO_ENTRY to search for a free one
	62	*/
	63	int entry;
d7cdc9e8 PM	64
	65	struct pmb_entry *next;
	66	/* Adjacent entry link for contiguous multi-entry mappings */
	67	struct pmb_entry *link;
0c7b1df6 PM	68	};
0c7b1df6 PM	69
a0ab3668	70	#ifdef CONFIG_PMB
0c7b1df6	71	/* arch/sh/mm/pmb.c */
d7cdc9e8 PM	72	long pmb_remap(unsigned long virt, unsigned long phys,
	73	unsigned long size, unsigned long flags);
	74	void pmb_unmap(unsigned long addr);
8386aebb	75	int pmb_init(void);
2efa53b2	76	bool __in_29bit_mode(void);
a0ab3668 PM	77	#else
	78	static inline long pmb_remap(unsigned long virt, unsigned long phys,
	79	unsigned long size, unsigned long flags)
	80	{
46c4e5da	81	return -EINVAL;
a0ab3668 PM	82	}
	83
	84	static inline void pmb_unmap(unsigned long addr)
	85	{
	86	}
	87
	88	static inline int pmb_init(void)
	89	{
	90	return -ENODEV;
	91	}
a0ab3668	92
2efa53b2 PM	93	#ifdef CONFIG_29BIT
	94	#define __in_29bit_mode() (1)
	95	#else
	96	#define __in_29bit_mode() (0)
	97	#endif
	98
	99	#endif /* CONFIG_PMB */
3b4df71b	100	#endif /* __ASSEMBLY__ */
0c7b1df6 PM	101
0c7b1df6 PM	102	#endif /* __MMU_H */