1/*
2 * local mtrr defines.
3 */
4
5#ifndef TRUE
6#define TRUE  1
7#define FALSE 0
8#endif
9
10#define MTRRcap_MSR     0x0fe
11#define MTRRdefType_MSR 0x2ff
12
13#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
14#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
15
16#define NUM_FIXED_RANGES 88
17#define MTRRfix64K_00000_MSR 0x250
18#define MTRRfix16K_80000_MSR 0x258
19#define MTRRfix16K_A0000_MSR 0x259
20#define MTRRfix4K_C0000_MSR 0x268
21#define MTRRfix4K_C8000_MSR 0x269
22#define MTRRfix4K_D0000_MSR 0x26a
23#define MTRRfix4K_D8000_MSR 0x26b
24#define MTRRfix4K_E0000_MSR 0x26c
25#define MTRRfix4K_E8000_MSR 0x26d
26#define MTRRfix4K_F0000_MSR 0x26e
27#define MTRRfix4K_F8000_MSR 0x26f
28
29#define MTRR_CHANGE_MASK_FIXED     0x01
30#define MTRR_CHANGE_MASK_VARIABLE  0x02
31#define MTRR_CHANGE_MASK_DEFTYPE   0x04
32
33/* In the Intel processor's MTRR interface, the MTRR type is always held in
34   an 8 bit field: */
35typedef u8 mtrr_type;
36
37struct mtrr_ops {
38	u32	vendor;
39	u32	use_intel_if;
40//	void	(*init)(void);
41	void	(*set)(unsigned int reg, unsigned long base,
42		       unsigned long size, mtrr_type type);
43	void	(*set_all)(void);
44
45	void	(*get)(unsigned int reg, unsigned long *base,
46		       unsigned long *size, mtrr_type * type);
47	int	(*get_free_region)(unsigned long base, unsigned long size,
48				   int replace_reg);
49	int	(*validate_add_page)(unsigned long base, unsigned long size,
50				     unsigned int type);
51	int	(*have_wrcomb)(void);
52};
53
54extern int generic_get_free_region(unsigned long base, unsigned long size,
55				   int replace_reg);
56extern int generic_validate_add_page(unsigned long base, unsigned long size,
57				     unsigned int type);
58
59extern struct mtrr_ops generic_mtrr_ops;
60
61extern int positive_have_wrcomb(void);
62
63/* library functions for processor-specific routines */
64struct set_mtrr_context {
65	unsigned long flags;
66	unsigned long cr4val;
67	u32 deftype_lo;
68	u32 deftype_hi;
69	u32 ccr3;
70};
71
72struct mtrr_var_range {
73	u32 base_lo;
74	u32 base_hi;
75	u32 mask_lo;
76	u32 mask_hi;
77};
78
79void set_mtrr_done(struct set_mtrr_context *ctxt);
80void set_mtrr_cache_disable(struct set_mtrr_context *ctxt);
81void set_mtrr_prepare_save(struct set_mtrr_context *ctxt);
82
83void get_mtrr_state(void);
84
85extern void set_mtrr_ops(struct mtrr_ops * ops);
86
87extern u64 size_or_mask, size_and_mask;
88extern struct mtrr_ops * mtrr_if;
89
90#define is_cpu(vnd)	(mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd)
91#define use_intel()	(mtrr_if && mtrr_if->use_intel_if == 1)
92
93extern unsigned int num_var_ranges;
94
95void mtrr_state_warn(void);
96const char *mtrr_attrib_to_str(int x);
97void mtrr_wrmsr(unsigned, unsigned, unsigned);
98