1 files changed, 98 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h
new file mode 100644
index 000000000000..289dfe6030e3
--- /dev/null
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.h
@@ -0,0 +1,98 @@
+/*
+ * local mtrr defines.
+ */
+
+#ifndef TRUE
+#define TRUE  1
+#define FALSE 0
+#endif
+
+#define MTRRcap_MSR     0x0fe
+#define MTRRdefType_MSR 0x2ff
+
+#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
+#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
+
+#define NUM_FIXED_RANGES 88
+#define MTRRfix64K_00000_MSR 0x250
+#define MTRRfix16K_80000_MSR 0x258
+#define MTRRfix16K_A0000_MSR 0x259
+#define MTRRfix4K_C0000_MSR 0x268
+#define MTRRfix4K_C8000_MSR 0x269
+#define MTRRfix4K_D0000_MSR 0x26a
+#define MTRRfix4K_D8000_MSR 0x26b
+#define MTRRfix4K_E0000_MSR 0x26c
+#define MTRRfix4K_E8000_MSR 0x26d
+#define MTRRfix4K_F0000_MSR 0x26e
+#define MTRRfix4K_F8000_MSR 0x26f
+
+#define MTRR_CHANGE_MASK_FIXED     0x01
+#define MTRR_CHANGE_MASK_VARIABLE  0x02
+#define MTRR_CHANGE_MASK_DEFTYPE   0x04
+
+/* In the Intel processor's MTRR interface, the MTRR type is always held in
+   an 8 bit field: */
+typedef u8 mtrr_type;
+
+struct mtrr_ops {
+        u32     vendor;
+        u32     use_intel_if;
+//      void    (*init)(void);
+        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 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;
+};
+
+struct mtrr_var_range {
+        u32 base_lo;
+        u32 base_hi;
+        u32 mask_lo;
+        u32 mask_hi;
+};
+
+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 get_mtrr_state(void);
+
+extern void set_mtrr_ops(struct mtrr_ops * ops);
+
+extern u64 size_or_mask, size_and_mask;
+extern 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;
+
+void mtrr_state_warn(void);
+const char *mtrr_attrib_to_str(int x);
+void mtrr_wrmsr(unsigned, unsigned, unsigned);
+