perf_events, x86: Remove spurious counter reset from x86_pmu_enable()
[linux-2.6.git] / arch / x86 / kernel / cpu / transmeta.c
1 #include <linux/kernel.h>
2 #include <linux/mm.h>
3 #include <linux/init.h>
4 #include <asm/processor.h>
5 #include <asm/msr.h>
6 #include "cpu.h"
7
8 static void __cpuinit early_init_transmeta(struct cpuinfo_x86 *c)
9 {
10         u32 xlvl;
11
12         /* Transmeta-defined flags: level 0x80860001 */
13         xlvl = cpuid_eax(0x80860000);
14         if ((xlvl & 0xffff0000) == 0x80860000) {
15                 if (xlvl >= 0x80860001)
16                         c->x86_capability[2] = cpuid_edx(0x80860001);
17         }
18 }
19
20 static void __cpuinit init_transmeta(struct cpuinfo_x86 *c)
21 {
22         unsigned int cap_mask, uk, max, dummy;
23         unsigned int cms_rev1, cms_rev2;
24         unsigned int cpu_rev, cpu_freq = 0, cpu_flags, new_cpu_rev;
25         char cpu_info[65];
26
27         early_init_transmeta(c);
28
29         cpu_detect_cache_sizes(c);
30
31         /* Print CMS and CPU revision */
32         max = cpuid_eax(0x80860000);
33         cpu_rev = 0;
34         if (max >= 0x80860001) {
35                 cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags);
36                 if (cpu_rev != 0x02000000) {
37                         printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
38                                 (cpu_rev >> 24) & 0xff,
39                                 (cpu_rev >> 16) & 0xff,
40                                 (cpu_rev >> 8) & 0xff,
41                                 cpu_rev & 0xff,
42                                 cpu_freq);
43                 }
44         }
45         if (max >= 0x80860002) {
46                 cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy);
47                 if (cpu_rev == 0x02000000) {
48                         printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n",
49                                 new_cpu_rev, cpu_freq);
50                 }
51                 printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
52                        (cms_rev1 >> 24) & 0xff,
53                        (cms_rev1 >> 16) & 0xff,
54                        (cms_rev1 >> 8) & 0xff,
55                        cms_rev1 & 0xff,
56                        cms_rev2);
57         }
58         if (max >= 0x80860006) {
59                 cpuid(0x80860003,
60                       (void *)&cpu_info[0],
61                       (void *)&cpu_info[4],
62                       (void *)&cpu_info[8],
63                       (void *)&cpu_info[12]);
64                 cpuid(0x80860004,
65                       (void *)&cpu_info[16],
66                       (void *)&cpu_info[20],
67                       (void *)&cpu_info[24],
68                       (void *)&cpu_info[28]);
69                 cpuid(0x80860005,
70                       (void *)&cpu_info[32],
71                       (void *)&cpu_info[36],
72                       (void *)&cpu_info[40],
73                       (void *)&cpu_info[44]);
74                 cpuid(0x80860006,
75                       (void *)&cpu_info[48],
76                       (void *)&cpu_info[52],
77                       (void *)&cpu_info[56],
78                       (void *)&cpu_info[60]);
79                 cpu_info[64] = '\0';
80                 printk(KERN_INFO "CPU: %s\n", cpu_info);
81         }
82
83         /* Unhide possibly hidden capability flags */
84         rdmsr(0x80860004, cap_mask, uk);
85         wrmsr(0x80860004, ~0, uk);
86         c->x86_capability[0] = cpuid_edx(0x00000001);
87         wrmsr(0x80860004, cap_mask, uk);
88
89         /* All Transmeta CPUs have a constant TSC */
90         set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
91
92 #ifdef CONFIG_SYSCTL
93         /*
94          * randomize_va_space slows us down enormously;
95          * it probably triggers retranslation of x86->native bytecode
96          */
97         randomize_va_space = 0;
98 #endif
99 }
100
101 static const struct cpu_dev __cpuinitconst transmeta_cpu_dev = {
102         .c_vendor       = "Transmeta",
103         .c_ident        = { "GenuineTMx86", "TransmetaCPU" },
104         .c_early_init   = early_init_transmeta,
105         .c_init         = init_transmeta,
106         .c_x86_vendor   = X86_VENDOR_TRANSMETA,
107 };
108
109 cpu_dev_register(transmeta_cpu_dev);