diff options
Diffstat (limited to 'arch/x86/kernel/cpu/mcheck/p6.c')
-rw-r--r-- | arch/x86/kernel/cpu/mcheck/p6.c | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/p6.c b/arch/x86/kernel/cpu/mcheck/p6.c deleted file mode 100644 index 01e4f8178183..000000000000 --- a/arch/x86/kernel/cpu/mcheck/p6.c +++ /dev/null | |||
@@ -1,127 +0,0 @@ | |||
1 | /* | ||
2 | * P6 specific Machine Check Exception Reporting | ||
3 | * (C) Copyright 2002 Alan Cox <alan@lxorguk.ukuu.org.uk> | ||
4 | */ | ||
5 | #include <linux/interrupt.h> | ||
6 | #include <linux/kernel.h> | ||
7 | #include <linux/types.h> | ||
8 | #include <linux/init.h> | ||
9 | #include <linux/smp.h> | ||
10 | |||
11 | #include <asm/processor.h> | ||
12 | #include <asm/system.h> | ||
13 | #include <asm/mce.h> | ||
14 | #include <asm/msr.h> | ||
15 | |||
16 | /* Machine Check Handler For PII/PIII */ | ||
17 | static void intel_machine_check(struct pt_regs *regs, long error_code) | ||
18 | { | ||
19 | u32 alow, ahigh, high, low; | ||
20 | u32 mcgstl, mcgsth; | ||
21 | int recover = 1; | ||
22 | int i; | ||
23 | |||
24 | rdmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth); | ||
25 | if (mcgstl & (1<<0)) /* Recoverable ? */ | ||
26 | recover = 0; | ||
27 | |||
28 | printk(KERN_EMERG "CPU %d: Machine Check Exception: %08x%08x\n", | ||
29 | smp_processor_id(), mcgsth, mcgstl); | ||
30 | |||
31 | for (i = 0; i < nr_mce_banks; i++) { | ||
32 | rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high); | ||
33 | if (high & (1<<31)) { | ||
34 | char misc[20]; | ||
35 | char addr[24]; | ||
36 | |||
37 | misc[0] = '\0'; | ||
38 | addr[0] = '\0'; | ||
39 | |||
40 | if (high & (1<<29)) | ||
41 | recover |= 1; | ||
42 | if (high & (1<<25)) | ||
43 | recover |= 2; | ||
44 | high &= ~(1<<31); | ||
45 | |||
46 | if (high & (1<<27)) { | ||
47 | rdmsr(MSR_IA32_MC0_MISC+i*4, alow, ahigh); | ||
48 | snprintf(misc, 20, "[%08x%08x]", ahigh, alow); | ||
49 | } | ||
50 | if (high & (1<<26)) { | ||
51 | rdmsr(MSR_IA32_MC0_ADDR+i*4, alow, ahigh); | ||
52 | snprintf(addr, 24, " at %08x%08x", ahigh, alow); | ||
53 | } | ||
54 | |||
55 | printk(KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n", | ||
56 | smp_processor_id(), i, high, low, misc, addr); | ||
57 | } | ||
58 | } | ||
59 | |||
60 | if (recover & 2) | ||
61 | panic("CPU context corrupt"); | ||
62 | if (recover & 1) | ||
63 | panic("Unable to continue"); | ||
64 | |||
65 | printk(KERN_EMERG "Attempting to continue.\n"); | ||
66 | /* | ||
67 | * Do not clear the MSR_IA32_MCi_STATUS if the error is not | ||
68 | * recoverable/continuable.This will allow BIOS to look at the MSRs | ||
69 | * for errors if the OS could not log the error: | ||
70 | */ | ||
71 | for (i = 0; i < nr_mce_banks; i++) { | ||
72 | unsigned int msr; | ||
73 | |||
74 | msr = MSR_IA32_MC0_STATUS+i*4; | ||
75 | rdmsr(msr, low, high); | ||
76 | if (high & (1<<31)) { | ||
77 | /* Clear it: */ | ||
78 | wrmsr(msr, 0UL, 0UL); | ||
79 | /* Serialize: */ | ||
80 | wmb(); | ||
81 | add_taint(TAINT_MACHINE_CHECK); | ||
82 | } | ||
83 | } | ||
84 | mcgstl &= ~(1<<2); | ||
85 | wrmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth); | ||
86 | } | ||
87 | |||
88 | /* Set up machine check reporting for processors with Intel style MCE: */ | ||
89 | void intel_p6_mcheck_init(struct cpuinfo_x86 *c) | ||
90 | { | ||
91 | u32 l, h; | ||
92 | int i; | ||
93 | |||
94 | /* Check for MCE support */ | ||
95 | if (!cpu_has(c, X86_FEATURE_MCE)) | ||
96 | return; | ||
97 | |||
98 | /* Check for PPro style MCA */ | ||
99 | if (!cpu_has(c, X86_FEATURE_MCA)) | ||
100 | return; | ||
101 | |||
102 | /* Ok machine check is available */ | ||
103 | machine_check_vector = intel_machine_check; | ||
104 | /* Make sure the vector pointer is visible before we enable MCEs: */ | ||
105 | wmb(); | ||
106 | |||
107 | printk(KERN_INFO "Intel machine check architecture supported.\n"); | ||
108 | rdmsr(MSR_IA32_MCG_CAP, l, h); | ||
109 | if (l & (1<<8)) /* Control register present ? */ | ||
110 | wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff); | ||
111 | nr_mce_banks = l & 0xff; | ||
112 | |||
113 | /* | ||
114 | * Following the example in IA-32 SDM Vol 3: | ||
115 | * - MC0_CTL should not be written | ||
116 | * - Status registers on all banks should be cleared on reset | ||
117 | */ | ||
118 | for (i = 1; i < nr_mce_banks; i++) | ||
119 | wrmsr(MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff); | ||
120 | |||
121 | for (i = 0; i < nr_mce_banks; i++) | ||
122 | wrmsr(MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0); | ||
123 | |||
124 | set_in_cr4(X86_CR4_MCE); | ||
125 | printk(KERN_INFO "Intel machine check reporting enabled on CPU#%d.\n", | ||
126 | smp_processor_id()); | ||
127 | } | ||