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#ifndef __ASM_X86_MTRR_H__
#define __ASM_X86_MTRR_H__
#include <xen/config.h>
#include <asm/mm.h>
/* These are the region types. They match the architectural specification. */
#define MTRR_TYPE_UNCACHABLE 0
#define MTRR_TYPE_WRCOMB 1
#define MTRR_TYPE_WRTHROUGH 4
#define MTRR_TYPE_WRPROT 5
#define MTRR_TYPE_WRBACK 6
#define MTRR_NUM_TYPES 7
#define MEMORY_NUM_TYPES MTRR_NUM_TYPES
#define NO_HARDCODE_MEM_TYPE MTRR_NUM_TYPES
#define NORMAL_CACHE_MODE 0
#define NO_FILL_CACHE_MODE 2
enum {
PAT_TYPE_UNCACHABLE=0,
PAT_TYPE_WRCOMB=1,
PAT_TYPE_RESERVED=2,
PAT_TYPE_WRTHROUGH=4,
PAT_TYPE_WRPROT=5,
PAT_TYPE_WRBACK=6,
PAT_TYPE_UC_MINUS=7,
PAT_TYPE_NUMS
};
#define INVALID_MEM_TYPE PAT_TYPE_NUMS
/* In the Intel processor's MTRR interface, the MTRR type is always held in
an 8 bit field: */
typedef u8 mtrr_type;
struct mtrr_var_range {
uint64_t base;
uint64_t mask;
};
#define NUM_FIXED_RANGES 88
#define NUM_FIXED_MSR 11
struct mtrr_state {
struct mtrr_var_range *var_ranges;
mtrr_type fixed_ranges[NUM_FIXED_RANGES];
unsigned char enabled;
unsigned char have_fixed;
mtrr_type def_type;
u64 mtrr_cap;
/* ranges in var MSRs are overlapped or not:0(no overlapped) */
bool_t overlapped;
};
extern struct mtrr_state mtrr_state;
extern void mtrr_save_fixed_ranges(void *);
extern void mtrr_save_state(void);
extern int mtrr_add(unsigned long base, unsigned long size,
unsigned int type, char increment);
extern int mtrr_add_page(unsigned long base, unsigned long size,
unsigned int type, char increment);
extern int mtrr_del(int reg, unsigned long base, unsigned long size);
extern int mtrr_del_page(int reg, unsigned long base, unsigned long size);
extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
extern u32 get_pat_flags(struct vcpu *v, u32 gl1e_flags, paddr_t gpaddr,
paddr_t spaddr, uint8_t gmtrr_mtype);
extern uint8_t epte_get_entry_emt(struct domain *d, unsigned long gfn,
mfn_t mfn, uint8_t *ipat, bool_t direct_mmio);
extern void ept_change_entry_emt_with_range(
struct domain *d, unsigned long start_gfn, unsigned long end_gfn);
extern unsigned char pat_type_2_pte_flags(unsigned char pat_type);
extern int hold_mtrr_updates_on_aps;
extern void mtrr_aps_sync_begin(void);
extern void mtrr_aps_sync_end(void);
extern void mtrr_bp_restore(void);
extern bool_t mtrr_var_range_msr_set(
struct domain *d, struct mtrr_state *m,
uint32_t msr, uint64_t msr_content);
extern bool_t mtrr_fix_range_msr_set(struct mtrr_state *v,
uint32_t row, uint64_t msr_content);
extern bool_t mtrr_def_type_msr_set(struct mtrr_state *v, uint64_t msr_content);
extern bool_t pat_msr_set(uint64_t *pat, uint64_t msr);
bool_t is_var_mtrr_overlapped(struct mtrr_state *m);
bool_t mtrr_pat_not_equal(struct vcpu *vd, struct vcpu *vs);
#endif /* __ASM_X86_MTRR_H__ */
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