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80 lines
2.2 KiB
80 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* local MTRR defines. |
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*/ |
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#include <linux/types.h> |
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#include <linux/stddef.h> |
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#define MTRR_CHANGE_MASK_FIXED 0x01 |
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#define MTRR_CHANGE_MASK_VARIABLE 0x02 |
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#define MTRR_CHANGE_MASK_DEFTYPE 0x04 |
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extern unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES]; |
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struct mtrr_ops { |
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u32 vendor; |
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u32 use_intel_if; |
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void (*set)(unsigned int reg, unsigned long base, |
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unsigned long size, mtrr_type type); |
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void (*set_all)(void); |
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void (*get)(unsigned int reg, unsigned long *base, |
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unsigned long *size, mtrr_type *type); |
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int (*get_free_region)(unsigned long base, unsigned long size, |
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int replace_reg); |
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int (*validate_add_page)(unsigned long base, unsigned long size, |
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unsigned int type); |
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int (*have_wrcomb)(void); |
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}; |
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extern int generic_get_free_region(unsigned long base, unsigned long size, |
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int replace_reg); |
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extern int generic_validate_add_page(unsigned long base, unsigned long size, |
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unsigned int type); |
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extern const struct mtrr_ops generic_mtrr_ops; |
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extern int positive_have_wrcomb(void); |
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/* library functions for processor-specific routines */ |
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struct set_mtrr_context { |
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unsigned long flags; |
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unsigned long cr4val; |
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u32 deftype_lo; |
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u32 deftype_hi; |
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u32 ccr3; |
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}; |
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void set_mtrr_done(struct set_mtrr_context *ctxt); |
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void set_mtrr_cache_disable(struct set_mtrr_context *ctxt); |
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void set_mtrr_prepare_save(struct set_mtrr_context *ctxt); |
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void fill_mtrr_var_range(unsigned int index, |
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u32 base_lo, u32 base_hi, u32 mask_lo, u32 mask_hi); |
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bool get_mtrr_state(void); |
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void mtrr_bp_pat_init(void); |
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extern void __init set_mtrr_ops(const struct mtrr_ops *ops); |
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extern u64 size_or_mask, size_and_mask; |
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extern const struct mtrr_ops *mtrr_if; |
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#define is_cpu(vnd) (mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd) |
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#define use_intel() (mtrr_if && mtrr_if->use_intel_if == 1) |
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extern unsigned int num_var_ranges; |
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extern u64 mtrr_tom2; |
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extern struct mtrr_state_type mtrr_state; |
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void mtrr_state_warn(void); |
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const char *mtrr_attrib_to_str(int x); |
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void mtrr_wrmsr(unsigned, unsigned, unsigned); |
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/* CPU specific mtrr init functions */ |
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int amd_init_mtrr(void); |
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int cyrix_init_mtrr(void); |
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int centaur_init_mtrr(void); |
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extern int changed_by_mtrr_cleanup; |
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extern int mtrr_cleanup(unsigned address_bits);
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