[linux-2.6-block.git] / arch / x86 / kernel / cpu / mtrr / mtrr.h

/*
 * local mtrr defines.
 */

#include <linux/types.h>
#include <linux/stddef.h>

#define MTRRcap_MSR     0x0fe
#define MTRRdefType_MSR 0x2ff

#define MTRRfix64K_00000_MSR 0x250
#define MTRRfix16K_80000_MSR 0x258
#define MTRRfix16K_A0000_MSR 0x259
#define MTRRfix4K_C0000_MSR 0x268
#define MTRRfix4K_C8000_MSR 0x269
#define MTRRfix4K_D0000_MSR 0x26a
#define MTRRfix4K_D8000_MSR 0x26b
#define MTRRfix4K_E0000_MSR 0x26c
#define MTRRfix4K_E8000_MSR 0x26d
#define MTRRfix4K_F0000_MSR 0x26e
#define MTRRfix4K_F8000_MSR 0x26f

#define MTRR_CHANGE_MASK_FIXED     0x01
#define MTRR_CHANGE_MASK_VARIABLE  0x02
#define MTRR_CHANGE_MASK_DEFTYPE   0x04

extern unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];

struct mtrr_ops {
	u32	vendor;
	u32	use_intel_if;
//	void	(*init)(void);
	void	(*set)(unsigned int reg, unsigned long base,
		       unsigned long size, mtrr_type type);
	void	(*set_all)(void);

	void	(*get)(unsigned int reg, unsigned long *base,
		       unsigned long *size, mtrr_type * type);
	int	(*get_free_region)(unsigned long base, unsigned long size,
				   int replace_reg);
	int	(*validate_add_page)(unsigned long base, unsigned long size,
				     unsigned int type);
	int	(*have_wrcomb)(void);
};

extern int generic_get_free_region(unsigned long base, unsigned long size,
				   int replace_reg);
extern int generic_validate_add_page(unsigned long base, unsigned long size,
				     unsigned int type);

extern struct mtrr_ops generic_mtrr_ops;

extern int positive_have_wrcomb(void);

/* library functions for processor-specific routines */
struct set_mtrr_context {
	unsigned long flags;
	unsigned long cr4val;
	u32 deftype_lo;
	u32 deftype_hi;
	u32 ccr3;
};

void set_mtrr_done(struct set_mtrr_context *ctxt);
void set_mtrr_cache_disable(struct set_mtrr_context *ctxt);
void set_mtrr_prepare_save(struct set_mtrr_context *ctxt);

void fill_mtrr_var_range(unsigned int index,
		u32 base_lo, u32 base_hi, u32 mask_lo, u32 mask_hi);
void get_mtrr_state(void);

extern void set_mtrr_ops(struct mtrr_ops * ops);

extern u64 size_or_mask, size_and_mask;
extern struct mtrr_ops * mtrr_if;

#define is_cpu(vnd)	(mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd)
#define use_intel()	(mtrr_if && mtrr_if->use_intel_if == 1)

extern unsigned int num_var_ranges;
extern u64 mtrr_tom2;

void mtrr_state_warn(void);
const char *mtrr_attrib_to_str(int x);
void mtrr_wrmsr(unsigned, unsigned, unsigned);

/* CPU specific mtrr init functions */
int amd_init_mtrr(void);
int cyrix_init_mtrr(void);
int centaur_init_mtrr(void);

extern int changed_by_mtrr_cleanup;
extern int mtrr_cleanup(unsigned address_bits);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* local mtrr defines.
	3	*/
	4
2d2ee8de PJ	5	#include <linux/types.h>
2d2ee8de PJ	6	#include <linux/stddef.h>
1da177e4 LT	7
	8	#define MTRRcap_MSR 0x0fe
	9	#define MTRRdefType_MSR 0x2ff
	10
1da177e4 LT	11	#define MTRRfix64K_00000_MSR 0x250
	12	#define MTRRfix16K_80000_MSR 0x258
	13	#define MTRRfix16K_A0000_MSR 0x259
	14	#define MTRRfix4K_C0000_MSR 0x268
	15	#define MTRRfix4K_C8000_MSR 0x269
	16	#define MTRRfix4K_D0000_MSR 0x26a
	17	#define MTRRfix4K_D8000_MSR 0x26b
	18	#define MTRRfix4K_E0000_MSR 0x26c
	19	#define MTRRfix4K_E8000_MSR 0x26d
	20	#define MTRRfix4K_F0000_MSR 0x26e
	21	#define MTRRfix4K_F8000_MSR 0x26f
	22
	23	#define MTRR_CHANGE_MASK_FIXED 0x01
	24	#define MTRR_CHANGE_MASK_VARIABLE 0x02
	25	#define MTRR_CHANGE_MASK_DEFTYPE 0x04
	26
b558bc0a	27	extern unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];
99fc8d42	28
1da177e4 LT	29	struct mtrr_ops {
	30	u32 vendor;
	31	u32 use_intel_if;
	32	// void (*init)(void);
	33	void (*set)(unsigned int reg, unsigned long base,
	34	unsigned long size, mtrr_type type);
	35	void (*set_all)(void);
	36
	37	void (get)(unsigned int reg, unsigned long base,
365bff80 JB	38	unsigned long size, mtrr_type type);
	39	int (*get_free_region)(unsigned long base, unsigned long size,
	40	int replace_reg);
1da177e4 LT	41	int (*validate_add_page)(unsigned long base, unsigned long size,
	42	unsigned int type);
	43	int (*have_wrcomb)(void);
	44	};
	45
365bff80 JB	46	extern int generic_get_free_region(unsigned long base, unsigned long size,
365bff80 JB	47	int replace_reg);
1da177e4 LT	48	extern int generic_validate_add_page(unsigned long base, unsigned long size,
	49	unsigned int type);
	50
	51	extern struct mtrr_ops generic_mtrr_ops;
	52
	53	extern int positive_have_wrcomb(void);
	54
	55	/* library functions for processor-specific routines */
	56	struct set_mtrr_context {
	57	unsigned long flags;
1da177e4	58	unsigned long cr4val;
365bff80 JB	59	u32 deftype_lo;
	60	u32 deftype_hi;
	61	u32 ccr3;
1da177e4 LT	62	};
1da177e4 LT	63
1da177e4 LT	64	void set_mtrr_done(struct set_mtrr_context *ctxt);
	65	void set_mtrr_cache_disable(struct set_mtrr_context *ctxt);
	66	void set_mtrr_prepare_save(struct set_mtrr_context *ctxt);
	67
95ffa243 YL	68	void fill_mtrr_var_range(unsigned int index,
95ffa243 YL	69	u32 base_lo, u32 base_hi, u32 mask_lo, u32 mask_hi);
1da177e4 LT	70	void get_mtrr_state(void);
	71
	72	extern void set_mtrr_ops(struct mtrr_ops * ops);
	73
6c5806ca	74	extern u64 size_or_mask, size_and_mask;
1da177e4 LT	75	extern struct mtrr_ops * mtrr_if;
	76
	77	#define is_cpu(vnd) (mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd)
	78	#define use_intel() (mtrr_if && mtrr_if->use_intel_if == 1)
	79
	80	extern unsigned int num_var_ranges;
95ffa243	81	extern u64 mtrr_tom2;
1da177e4	82
1da177e4	83	void mtrr_state_warn(void);
365bff80	84	const char *mtrr_attrib_to_str(int x);
1da177e4 LT	85	void mtrr_wrmsr(unsigned, unsigned, unsigned);
1da177e4 LT	86
16c02ed7 HH	87	/* CPU specific mtrr init functions */
	88	int amd_init_mtrr(void);
	89	int cyrix_init_mtrr(void);
	90	int centaur_init_mtrr(void);
0d890355 YL	91
	92	extern int changed_by_mtrr_cleanup;
	93	extern int mtrr_cleanup(unsigned address_bits);