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: */ 35 typedef u8 mtrr_type; 36 37 struct 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 54 extern int generic_get_free_region(unsigned long base, unsigned long size, 55 int replace_reg); 56 extern int generic_validate_add_page(unsigned long base, unsigned long size, 57 unsigned int type); 58 59 extern struct mtrr_ops generic_mtrr_ops; 60 61 extern int positive_have_wrcomb(void); 62 63 /* library functions for processor-specific routines */ 64 struct set_mtrr_context { 65 unsigned long flags; 66 unsigned long cr4val; 67 u32 deftype_lo; 68 u32 deftype_hi; 69 u32 ccr3; 70 }; 71 72 struct mtrr_var_range { 73 u32 base_lo; 74 u32 base_hi; 75 u32 mask_lo; 76 u32 mask_hi; 77 }; 78 79 void set_mtrr_done(struct set_mtrr_context *ctxt); 80 void set_mtrr_cache_disable(struct set_mtrr_context *ctxt); 81 void set_mtrr_prepare_save(struct set_mtrr_context *ctxt); 82 83 void get_mtrr_state(void); 84 85 extern void set_mtrr_ops(struct mtrr_ops * ops); 86 87 extern u64 size_or_mask, size_and_mask; 88 extern 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 93 extern unsigned int num_var_ranges; 94 95 void mtrr_state_warn(void); 96 const char *mtrr_attrib_to_str(int x); 97 void mtrr_wrmsr(unsigned, unsigned, unsigned); 98 99