Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / x86 / kernel / cpu / mtrr / mtrr.h

diff --git a/kernel/arch/x86/kernel/cpu/mtrr/mtrr.h b/kernel/arch/x86/kernel/cpu/mtrr/mtrr.h
new file mode 100644 (file)
index 0000000..df5e41f
--- /dev/null
+++ b/kernel/arch/x86/kernel/cpu/mtrr/mtrr.h
@@ -0,0 +1,78 @@
+/*
+ * 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);
+void get_mtrr_state(void);
+
+extern void 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);