diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 05:16:25 -0400 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 05:16:25 -0400 |
commit | c18db0d7e299791c73d4dbe5ae7905b2ab8ba332 (patch) | |
tree | 373a8c9ff189ae9a2e2c4fadd7528164b2e3c285 /arch/i386/kernel/cpu/mcheck/p6.c | |
parent | 23d6f82bd1f07886b3a974c5193baa715475dd37 (diff) |
i386: move kernel/cpu/mcheck
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/i386/kernel/cpu/mcheck/p6.c')
-rw-r--r-- | arch/i386/kernel/cpu/mcheck/p6.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/arch/i386/kernel/cpu/mcheck/p6.c b/arch/i386/kernel/cpu/mcheck/p6.c deleted file mode 100644 index deeae42ce199..000000000000 --- a/arch/i386/kernel/cpu/mcheck/p6.c +++ /dev/null | |||
@@ -1,119 +0,0 @@ | |||
1 | /* | ||
2 | * P6 specific Machine Check Exception Reporting | ||
3 | * (C) Copyright 2002 Alan Cox <alan@redhat.com> | ||
4 | */ | ||
5 | |||
6 | #include <linux/init.h> | ||
7 | #include <linux/types.h> | ||
8 | #include <linux/kernel.h> | ||
9 | #include <linux/interrupt.h> | ||
10 | #include <linux/smp.h> | ||
11 | |||
12 | #include <asm/processor.h> | ||
13 | #include <asm/system.h> | ||
14 | #include <asm/msr.h> | ||
15 | |||
16 | #include "mce.h" | ||
17 | |||
18 | /* Machine Check Handler For PII/PIII */ | ||
19 | static fastcall void intel_machine_check(struct pt_regs * regs, long error_code) | ||
20 | { | ||
21 | int recover=1; | ||
22 | u32 alow, ahigh, high, low; | ||
23 | u32 mcgstl, mcgsth; | ||
24 | int i; | ||
25 | |||
26 | rdmsr (MSR_IA32_MCG_STATUS, mcgstl, mcgsth); | ||
27 | if (mcgstl & (1<<0)) /* Recoverable ? */ | ||
28 | recover=0; | ||
29 | |||
30 | printk (KERN_EMERG "CPU %d: Machine Check Exception: %08x%08x\n", | ||
31 | smp_processor_id(), mcgsth, mcgstl); | ||
32 | |||
33 | for (i=0; i<nr_mce_banks; i++) { | ||
34 | rdmsr (MSR_IA32_MC0_STATUS+i*4,low, high); | ||
35 | if (high & (1<<31)) { | ||
36 | if (high & (1<<29)) | ||
37 | recover |= 1; | ||
38 | if (high & (1<<25)) | ||
39 | recover |= 2; | ||
40 | printk (KERN_EMERG "Bank %d: %08x%08x", i, high, low); | ||
41 | high &= ~(1<<31); | ||
42 | if (high & (1<<27)) { | ||
43 | rdmsr (MSR_IA32_MC0_MISC+i*4, alow, ahigh); | ||
44 | printk ("[%08x%08x]", ahigh, alow); | ||
45 | } | ||
46 | if (high & (1<<26)) { | ||
47 | rdmsr (MSR_IA32_MC0_ADDR+i*4, alow, ahigh); | ||
48 | printk (" at %08x%08x", ahigh, alow); | ||
49 | } | ||
50 | printk ("\n"); | ||
51 | } | ||
52 | } | ||
53 | |||
54 | if (recover & 2) | ||
55 | panic ("CPU context corrupt"); | ||
56 | if (recover & 1) | ||
57 | panic ("Unable to continue"); | ||
58 | |||
59 | printk (KERN_EMERG "Attempting to continue.\n"); | ||
60 | /* | ||
61 | * Do not clear the MSR_IA32_MCi_STATUS if the error is not | ||
62 | * recoverable/continuable.This will allow BIOS to look at the MSRs | ||
63 | * for errors if the OS could not log the error. | ||
64 | */ | ||
65 | for (i=0; i<nr_mce_banks; i++) { | ||
66 | unsigned int msr; | ||
67 | msr = MSR_IA32_MC0_STATUS+i*4; | ||
68 | rdmsr (msr,low, high); | ||
69 | if (high & (1<<31)) { | ||
70 | /* Clear it */ | ||
71 | wrmsr (msr, 0UL, 0UL); | ||
72 | /* Serialize */ | ||
73 | wmb(); | ||
74 | add_taint(TAINT_MACHINE_CHECK); | ||
75 | } | ||
76 | } | ||
77 | mcgstl &= ~(1<<2); | ||
78 | wrmsr (MSR_IA32_MCG_STATUS,mcgstl, mcgsth); | ||
79 | } | ||
80 | |||
81 | /* Set up machine check reporting for processors with Intel style MCE */ | ||
82 | void intel_p6_mcheck_init(struct cpuinfo_x86 *c) | ||
83 | { | ||
84 | u32 l, h; | ||
85 | int i; | ||
86 | |||
87 | /* Check for MCE support */ | ||
88 | if (!cpu_has(c, X86_FEATURE_MCE)) | ||
89 | return; | ||
90 | |||
91 | /* Check for PPro style MCA */ | ||
92 | if (!cpu_has(c, X86_FEATURE_MCA)) | ||
93 | return; | ||
94 | |||
95 | /* Ok machine check is available */ | ||
96 | machine_check_vector = intel_machine_check; | ||
97 | wmb(); | ||
98 | |||
99 | printk (KERN_INFO "Intel machine check architecture supported.\n"); | ||
100 | rdmsr (MSR_IA32_MCG_CAP, l, h); | ||
101 | if (l & (1<<8)) /* Control register present ? */ | ||
102 | wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff); | ||
103 | nr_mce_banks = l & 0xff; | ||
104 | |||
105 | /* | ||
106 | * Following the example in IA-32 SDM Vol 3: | ||
107 | * - MC0_CTL should not be written | ||
108 | * - Status registers on all banks should be cleared on reset | ||
109 | */ | ||
110 | for (i=1; i<nr_mce_banks; i++) | ||
111 | wrmsr (MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff); | ||
112 | |||
113 | for (i=0; i<nr_mce_banks; i++) | ||
114 | wrmsr (MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0); | ||
115 | |||
116 | set_in_cr4 (X86_CR4_MCE); | ||
117 | printk (KERN_INFO "Intel machine check reporting enabled on CPU#%d.\n", | ||
118 | smp_processor_id()); | ||
119 | } | ||