5 #include <linux/types.h>
6 #include <linux/stddef.h>
8 #define MTRRcap_MSR 0x0fe
9 #define MTRRdefType_MSR 0x2ff
11 #define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
12 #define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
14 #define NUM_FIXED_RANGES 88
15 #define MTRRfix64K_00000_MSR 0x250
16 #define MTRRfix16K_80000_MSR 0x258
17 #define MTRRfix16K_A0000_MSR 0x259
18 #define MTRRfix4K_C0000_MSR 0x268
19 #define MTRRfix4K_C8000_MSR 0x269
20 #define MTRRfix4K_D0000_MSR 0x26a
21 #define MTRRfix4K_D8000_MSR 0x26b
22 #define MTRRfix4K_E0000_MSR 0x26c
23 #define MTRRfix4K_E8000_MSR 0x26d
24 #define MTRRfix4K_F0000_MSR 0x26e
25 #define MTRRfix4K_F8000_MSR 0x26f
27 #define MTRR_CHANGE_MASK_FIXED 0x01
28 #define MTRR_CHANGE_MASK_VARIABLE 0x02
29 #define MTRR_CHANGE_MASK_DEFTYPE 0x04
31 /* In the Intel processor's MTRR interface, the MTRR type is always held in
38 // void (*init)(void);
39 void (*set)(unsigned int reg, unsigned long base,
40 unsigned long size, mtrr_type type);
41 void (*set_all)(void);
43 void (*get)(unsigned int reg, unsigned long *base,
44 unsigned long *size, mtrr_type * type);
45 int (*get_free_region)(unsigned long base, unsigned long size,
47 int (*validate_add_page)(unsigned long base, unsigned long size,
49 int (*have_wrcomb)(void);
52 extern int generic_get_free_region(unsigned long base, unsigned long size,
54 extern int generic_validate_add_page(unsigned long base, unsigned long size,
57 extern struct mtrr_ops generic_mtrr_ops;
59 extern int positive_have_wrcomb(void);
61 /* library functions for processor-specific routines */
62 struct set_mtrr_context {
70 struct mtrr_var_range {
77 void set_mtrr_done(struct set_mtrr_context *ctxt);
78 void set_mtrr_cache_disable(struct set_mtrr_context *ctxt);
79 void set_mtrr_prepare_save(struct set_mtrr_context *ctxt);
81 void get_mtrr_state(void);
83 extern void set_mtrr_ops(struct mtrr_ops * ops);
85 extern u64 size_or_mask, size_and_mask;
86 extern struct mtrr_ops * mtrr_if;
88 #define is_cpu(vnd) (mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd)
89 #define use_intel() (mtrr_if && mtrr_if->use_intel_if == 1)
91 extern unsigned int num_var_ranges;
93 void mtrr_state_warn(void);
94 const char *mtrr_attrib_to_str(int x);
95 void mtrr_wrmsr(unsigned, unsigned, unsigned);