x86: unify x86_cpuinfo struct.

x86_cpuinfo is one more to the family of "not fundamentally different"
structs. It's unified in processor.h, with very specific fields enclosed
around ifdefs.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 82 insertions, 0 deletions

diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 8b56c23f043..2b896b0aa3f 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -10,6 +10,9 @@ struct mm_struct;
 #include <asm/page.h>
 #include <asm/percpu.h>
 #include <asm/system.h>
+#include <asm/percpu.h>
+#include <linux/cpumask.h>
+#include <linux/cache.h>
 
 /*
  * Default implementation of macro that returns current
@@ -30,6 +33,85 @@ static inline void *current_text_addr(void)
 #define ARCH_MIN_MMSTRUCT_ALIGN	0
 #endif
 
+/*
+ *  CPU type and hardware bug flags. Kept separately for each CPU.
+ *  Members of this structure are referenced in head.S, so think twice
+ *  before touching them. [mj]
+ */
+
+struct cpuinfo_x86 {
+	__u8	x86;		/* CPU family */
+	__u8	x86_vendor;	/* CPU vendor */
+	__u8	x86_model;
+	__u8	x86_mask;
+#ifdef CONFIG_X86_32
+	char	wp_works_ok;	/* It doesn't on 386's */
+	char	hlt_works_ok;	/* Problems on some 486Dx4's and old 386's */
+	char	hard_math;
+	char	rfu;
+	char	fdiv_bug;
+	char	f00f_bug;
+	char	coma_bug;
+	char	pad0;
+#else
+	/* number of 4K pages in DTLB/ITLB combined(in pages)*/
+	int     x86_tlbsize;
+	__u8    x86_virt_bits, x86_phys_bits;
+	/* cpuid returned core id bits */
+	__u8    x86_coreid_bits;
+	/* Max extended CPUID function supported */
+	__u32   extended_cpuid_level;
+#endif
+	int	cpuid_level;	/* Maximum supported CPUID level, -1=no CPUID */
+	__u32	x86_capability[NCAPINTS];
+	char	x86_vendor_id[16];
+	char	x86_model_id[64];
+	int 	x86_cache_size;  /* in KB - valid for CPUS which support this
+				    call  */
+	int 	x86_cache_alignment;	/* In bytes */
+	int	x86_power;
+	unsigned long loops_per_jiffy;
+#ifdef CONFIG_SMP
+	cpumask_t llc_shared_map;	/* cpus sharing the last level cache */
+#endif
+	unsigned char x86_max_cores;	/* cpuid returned max cores value */
+	unsigned char apicid;
+	unsigned short x86_clflush_size;
+#ifdef CONFIG_SMP
+	unsigned char booted_cores;	/* number of cores as seen by OS */
+	__u8 phys_proc_id; 		/* Physical processor id. */
+	__u8 cpu_core_id;  		/* Core id */
+	__u8 cpu_index;			/* index into per_cpu list */
+#endif
+} __attribute__((__aligned__(SMP_CACHE_BYTES)));
+
+#define X86_VENDOR_INTEL 0
+#define X86_VENDOR_CYRIX 1
+#define X86_VENDOR_AMD 2
+#define X86_VENDOR_UMC 3
+#define X86_VENDOR_NEXGEN 4
+#define X86_VENDOR_CENTAUR 5
+#define X86_VENDOR_TRANSMETA 7
+#define X86_VENDOR_NSC 8
+#define X86_VENDOR_NUM 9
+#define X86_VENDOR_UNKNOWN 0xff
+
+extern struct cpuinfo_x86 boot_cpu_data;
+
+#ifdef CONFIG_SMP
+DECLARE_PER_CPU(struct cpuinfo_x86, cpu_info);
+#define cpu_data(cpu)		per_cpu(cpu_info, cpu)
+#define current_cpu_data	cpu_data(smp_processor_id())
+#else
+#define cpu_data(cpu)		boot_cpu_data
+#define current_cpu_data	boot_cpu_data
+#endif
+
+extern void print_cpu_info(struct cpuinfo_x86 *);
+extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
+extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
+extern unsigned short num_cache_leaves;
+
 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
 					 unsigned int *ecx, unsigned int *edx)
 {