blob: 0984c70716953fd8a5a577cbc3d63efcccb555f3 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
#define DEBUG
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <asm/reg.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include "ras.h"
#include "cbe_regs.h"
static void dump_fir(int cpu)
{
struct cbe_pmd_regs __iomem *pregs = cbe_get_cpu_pmd_regs(cpu);
struct cbe_iic_regs __iomem *iregs = cbe_get_cpu_iic_regs(cpu);
if (pregs == NULL)
return;
/* Todo: do some nicer parsing of bits and based on them go down
* to other sub-units FIRs and not only IIC
*/
printk(KERN_ERR "Global Checkstop FIR : 0x%016lx\n",
in_be64(&pregs->checkstop_fir));
printk(KERN_ERR "Global Recoverable FIR : 0x%016lx\n",
in_be64(&pregs->checkstop_fir));
printk(KERN_ERR "Global MachineCheck FIR : 0x%016lx\n",
in_be64(&pregs->spec_att_mchk_fir));
if (iregs == NULL)
return;
printk(KERN_ERR "IOC FIR : 0x%016lx\n",
in_be64(&iregs->ioc_fir));
}
void cbe_system_error_exception(struct pt_regs *regs)
{
int cpu = smp_processor_id();
printk(KERN_ERR "System Error Interrupt on CPU %d !\n", cpu);
dump_fir(cpu);
dump_stack();
}
void cbe_maintenance_exception(struct pt_regs *regs)
{
int cpu = smp_processor_id();
/*
* Nothing implemented for the maintenance interrupt at this point
*/
printk(KERN_ERR "Unhandled Maintenance interrupt on CPU %d !\n", cpu);
dump_stack();
}
void cbe_thermal_exception(struct pt_regs *regs)
{
int cpu = smp_processor_id();
/*
* Nothing implemented for the thermal interrupt at this point
*/
printk(KERN_ERR "Unhandled Thermal interrupt on CPU %d !\n", cpu);
dump_stack();
}
static int cbe_machine_check_handler(struct pt_regs *regs)
{
int cpu = smp_processor_id();
printk(KERN_ERR "Machine Check Interrupt on CPU %d !\n", cpu);
dump_fir(cpu);
/* No recovery from this code now, lets continue */
return 0;
}
void __init cbe_ras_init(void)
{
unsigned long hid0;
/*
* Enable System Error & thermal interrupts and wakeup conditions
*/
hid0 = mfspr(SPRN_HID0);
hid0 |= HID0_CBE_THERM_INT_EN | HID0_CBE_THERM_WAKEUP |
HID0_CBE_SYSERR_INT_EN | HID0_CBE_SYSERR_WAKEUP;
mtspr(SPRN_HID0, hid0);
mb();
/*
* Install machine check handler. Leave setting of precise mode to
* what the firmware did for now
*/
ppc_md.machine_check_exception = cbe_machine_check_handler;
mb();
/*
* For now, we assume that IOC_FIR is already set to forward some
* error conditions to the System Error handler. If that is not true
* then it will have to be fixed up here.
*/
}
|
