#ifndef CCAN_CPUID_H
#define CCAN_CPUID_H
+/**
+ * enum cpuid - stuff to get information on from the CPU.
+ *
+ * This is used as a parameter in cpuid().
+ *
+ * CPU_VENDORID:
+ * The CPU's Vendor ID.
+ *
+ * CPU_PROCINFO_AND_FEATUREBITS:
+ * Processor information and feature bits (SSE, etc.).
+ *
+ * CPU_CACHE_AND_TLBD_INFO
+ * Cache and TLBD Information.
+ *
+ * CPU_HIGHEST_EXTENDED_FUNCTION_SUPPORTED:
+ * Highest extended function supported address.
+ * Can be like 0x80000008.
+ *
+ * CPU_EXTENDED_PROC_INFO_FEATURE_BITS:
+ * Extended processor information and feature bits (64bit etc.)
+ *
+ * CPU_PROC_BRAND_STRING:
+ * The Processor's brand string.
+ *
+ * CPU_L1_CACHE_AND_TLB_IDS:
+ * L1 Cache and TLB Identifications.
+ *
+ * CPU_EXTENDED_L2_CACHE_FEATURES:
+ * Extended L2 Cache features.
+ *
+ * CPU_ADV_POWER_MGT_INFO:
+ * Advaned power management information.
+ *
+ * CPU_VIRT_PHYS_ADDR_SIZES:
+ * Virtual and physical address sizes.
+ */
+
typedef enum cpuid {
CPU_VENDORID = 0,
CPU_PROCINFO_AND_FEATUREBITS = 1,
CPU_VIRT_PHYS_ADDR_SIZES = 0x80000008
} cpuid_t;
-typedef enum cpufeature {
- CF_MMX = 1 << 23,
- CF_SSE = 1 << 25,
- CF_SSE2 = 1 << 26,
- CF_SSE3 = 1 << 0,
+#define CF_MMX 0
+#define CF_SSE 1
+#define CF_SSE2 2
+#define CF_SSE3 3
+#define CF_FPU 4
+#define CF_TSC 5
+#define CF_MSR 6
+#define CF_SSSE3 7
+#define CF_AVX 8
+#define CF_FMA 9
+
+#define CEF_x64 10
+#define CEF_FPU 11
+#define CEF_DE 12
+#define CEF_SYSCALLRET 13
+#define CEF_CMOV 14
+#define CEF_SSE4a 15
+#define CEF_FMA4 16
+#define CEF_XOP 17
- CF_SSSE3 = 1 << 9,
- CF_SSE41 = 1 << 19,
- CF_SSE42 = 1 << 20,
+typedef enum cputype {
+ CT_NONE,
+ CT_AMDK5,
+ CT_AMD,
+ CT_CENTAUR,
+ CT_CYRIX,
+ CT_INTEL,
+ CT_TRANSMETA,
+ CT_NATIONAL_SEMICONDUCTOR,
+ CT_NEXGEN,
+ CT_RISE,
+ CT_SIS,
+ CT_UMC,
+ CT_VIA,
+ CT_VORTEX,
+ CT_KVM
+} cputype_t;
- CF_AVX = 1 << 28,
- CF_FMA = 1 << 12
-} cpufeature_t;
+/**
+ * cpuid_get_cpu_type - Get CPU Type
+ *
+ * Returns the CPU Type as cputype_t.
+ *
+ * See also: cpuid_get_cpu_type_string()
+ */
+cputype_t cpuid_get_cpu_type(void);
-typedef enum cpuextfeature {
- CEF_x64 = 1 << 29,
- CEF_SSE4a = 1 << 6,
- CEF_FMA4 = 1 << 16,
- CEF_XOP = 1 << 11
-} cpuextfeature_t;
+/**
+ * cpuid_get_cpu_type_string - Get CPU Type string
+ *
+ * Returns the CPU type string based off cputype_t.
+ */
+const char *cpuid_get_cpu_type_string(const cputype_t cputype);
-/* returns 1 if the cpuid instruction is supported, 0 otherwise.
+/**
+ * cpuid_is_supported - test if the CPUID instruction is supported
+ *
+ * CPUID is not supported by old CPUS.
*
- * CPUID isn't supported on very old Intel CPUs.
- * Defined in issupprted.S
+ * Returns 1 if the cpuid instruction is supported, 0 otherwise.
+ *
+ * See also: cpuid()
*/
int cpuid_is_supported(void);
-/* returns the highest extended function supported.
+/**
+ * cpuid_highest_ext_func_supported - Get the highest extended function supported
+ *
+ *
+ * Returns the highest extended function supported.
*
* This is the same as calling:
* cpuid(CPU_HIGHEST_EEXTENDED_FUNCTION_SUPPORTED, &highest);
*
* This is made visible to the linker because it's easier to call it
* instead of calling cpuid with less type-checking. cpuid calls this.
+ *
+ * See also: cpuid()
*/
-int highest_ext_func_supported(void);
+int cpuid_highest_ext_func_supported(void);
-/* Get Some information from the CPU.
+/**
+ * cpuid - Get Some information from the CPU.
+ *
* This function expects buf to be a valid pointer to a string/int/...
* depending on the requested information.
*
*/
void cpuid(cpuid_t info, void *buf);
-/*
+/**
+ * cpuid_test_feature - Test if @feature is available
+ *
* Returns 1 if feature is supported, 0 otherwise.
*
* The feature parameter must be >= CPU_EXTENDED_PROC_INFO_FEATURE_BITS
*/
int cpuid_test_feature(cpuid_t feature);
-/* Test if the CPU supports MMX/SSE*
+/**
+ * cpuid_has_feature - Test if @feature is supported
*
- * Returns 1 if the feature is available, 0 otherwise.
- */
-#define cpuid_has_mmx() cpuid_has_feature(CF_MMX)
-#define cpuid_has_sse() cpuid_has_feature(CF_SSE)
-#define cpuid_has_sse2() cpuid_has_feature(CF_SSE2)
-#define cpuid_has_sse3() cpuid_has_feature(CF_SSE3)
-#define cpuid_has_ssse3() cpuid_has_feature(CF_SSSE3)
-#define cpuid_has_sse41() cpuid_has_feature(CF_SSE41)
-#define cpuid_has_sse42() cpuid_has_feature(CF_SSE42)
-#define cpuid_has_avx() cpuid_has_feature(CF_AVX)
-#define cpuid_has_fma() cpuid_has_feature(CF_FMA)
-int cpuid_has_feature(cpufeature_t feature);
-
-/* Test if the CPU supports an extended feature.
+ * Test if the CPU supports MMX/SSE* etc.
+ * For the extended parameter, usually you want to pass it as
+ * 0 if you're not passing CEF_*.
*
- * Returns 1 if available, 0 otherwise.
+ * For more information about the CPU extended features, have a look
+ * at:
+ * http://en.wikipedia.org/wiki/CPUID
+ *
+ * Returns 1 if the feature is available, 0 otherwise.
*/
-#define cpuid_has_x64() cpuid_has_ext_feature(CEF_x64)
-#define cpuid_has_sse4a() cpuid_has_ext_feature(CEF_SSE4a)
-#define cpuid_has_fma4() cpuid_has_ext_feature(CEF_FMA4)
-#define cpuid_has_xop() cpuid_has_ext_feature(CEF_XOP)
-int cpuid_has_ext_feature(cpuextfeature_t extfeature);
+#define cpuid_has_mmx() cpuid_has_feature(CF_MMX, 0)
+#define cpuid_has_sse() cpuid_has_feature(CF_SSE, 0)
+#define cpuid_has_sse2() cpuid_has_feature(CF_SSE2, 0)
+#define cpuid_has_sse3() cpuid_has_feature(CF_SSE3, 0)
+#define cpuid_has_ssse3() cpuid_has_feature(CF_SSSE3, 0)
+#define cpuid_has_avx() cpuid_has_feature(CF_AVX, 0)
+#define cpuid_has_fma() cpuid_has_feature(CF_FMA, 0)
+#define cpuid_has_x64() cpuid_has_feature(CEF_x64, 1)
+#define cpuid_has_sse4a() cpuid_has_feature(CEF_SSE4a, 1)
+#define cpuid_has_fma4() cpuid_has_feature(CEF_FMA4, 1)
+#define cpuid_has_xop() cpuid_has_feature(CEF_XOP, 1)
+int cpuid_has_feature(int feature, int extended);
#endif
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