81 lines
2.2 KiB
C
Executable file
81 lines
2.2 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* local MTRR defines.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/stddef.h>
|
|
|
|
#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 (*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 const 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);
|
|
bool get_mtrr_state(void);
|
|
void mtrr_bp_pat_init(void);
|
|
|
|
extern void __init set_mtrr_ops(const struct mtrr_ops *ops);
|
|
|
|
extern u64 size_or_mask, size_and_mask;
|
|
extern const 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;
|
|
extern struct mtrr_state_type mtrr_state;
|
|
|
|
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);
|