| Benjamin Herrenschmidt | acf7d76 | 2006-06-19 20:33:16 +0200 | [diff] [blame] | 1 | #define DEBUG |
| 2 | |
| 3 | #include <linux/config.h> |
| 4 | #include <linux/types.h> |
| 5 | #include <linux/kernel.h> |
| 6 | #include <linux/smp.h> |
| 7 | |
| 8 | #include <asm/reg.h> |
| 9 | #include <asm/io.h> |
| 10 | #include <asm/prom.h> |
| 11 | #include <asm/machdep.h> |
| 12 | |
| 13 | #include "ras.h" |
| 14 | #include "cbe_regs.h" |
| 15 | |
| 16 | |
| 17 | static void dump_fir(int cpu) |
| 18 | { |
| 19 | struct cbe_pmd_regs __iomem *pregs = cbe_get_cpu_pmd_regs(cpu); |
| 20 | struct cbe_iic_regs __iomem *iregs = cbe_get_cpu_iic_regs(cpu); |
| 21 | |
| 22 | if (pregs == NULL) |
| 23 | return; |
| 24 | |
| 25 | /* Todo: do some nicer parsing of bits and based on them go down |
| 26 | * to other sub-units FIRs and not only IIC |
| 27 | */ |
| 28 | printk(KERN_ERR "Global Checkstop FIR : 0x%016lx\n", |
| 29 | in_be64(&pregs->checkstop_fir)); |
| 30 | printk(KERN_ERR "Global Recoverable FIR : 0x%016lx\n", |
| 31 | in_be64(&pregs->checkstop_fir)); |
| 32 | printk(KERN_ERR "Global MachineCheck FIR : 0x%016lx\n", |
| 33 | in_be64(&pregs->spec_att_mchk_fir)); |
| 34 | |
| 35 | if (iregs == NULL) |
| 36 | return; |
| 37 | printk(KERN_ERR "IOC FIR : 0x%016lx\n", |
| 38 | in_be64(&iregs->ioc_fir)); |
| 39 | |
| 40 | } |
| 41 | |
| 42 | void cbe_system_error_exception(struct pt_regs *regs) |
| 43 | { |
| 44 | int cpu = smp_processor_id(); |
| 45 | |
| 46 | printk(KERN_ERR "System Error Interrupt on CPU %d !\n", cpu); |
| 47 | dump_fir(cpu); |
| 48 | dump_stack(); |
| 49 | } |
| 50 | |
| 51 | void cbe_maintenance_exception(struct pt_regs *regs) |
| 52 | { |
| 53 | int cpu = smp_processor_id(); |
| 54 | |
| 55 | /* |
| 56 | * Nothing implemented for the maintenance interrupt at this point |
| 57 | */ |
| 58 | |
| 59 | printk(KERN_ERR "Unhandled Maintenance interrupt on CPU %d !\n", cpu); |
| 60 | dump_stack(); |
| 61 | } |
| 62 | |
| 63 | void cbe_thermal_exception(struct pt_regs *regs) |
| 64 | { |
| 65 | int cpu = smp_processor_id(); |
| 66 | |
| 67 | /* |
| 68 | * Nothing implemented for the thermal interrupt at this point |
| 69 | */ |
| 70 | |
| 71 | printk(KERN_ERR "Unhandled Thermal interrupt on CPU %d !\n", cpu); |
| 72 | dump_stack(); |
| 73 | } |
| 74 | |
| 75 | static int cbe_machine_check_handler(struct pt_regs *regs) |
| 76 | { |
| 77 | int cpu = smp_processor_id(); |
| 78 | |
| 79 | printk(KERN_ERR "Machine Check Interrupt on CPU %d !\n", cpu); |
| 80 | dump_fir(cpu); |
| 81 | |
| 82 | /* No recovery from this code now, lets continue */ |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | void __init cbe_ras_init(void) |
| 87 | { |
| 88 | unsigned long hid0; |
| 89 | |
| 90 | /* |
| 91 | * Enable System Error & thermal interrupts and wakeup conditions |
| 92 | */ |
| 93 | |
| 94 | hid0 = mfspr(SPRN_HID0); |
| 95 | hid0 |= HID0_CBE_THERM_INT_EN | HID0_CBE_THERM_WAKEUP | |
| 96 | HID0_CBE_SYSERR_INT_EN | HID0_CBE_SYSERR_WAKEUP; |
| 97 | mtspr(SPRN_HID0, hid0); |
| 98 | mb(); |
| 99 | |
| 100 | /* |
| 101 | * Install machine check handler. Leave setting of precise mode to |
| 102 | * what the firmware did for now |
| 103 | */ |
| 104 | ppc_md.machine_check_exception = cbe_machine_check_handler; |
| 105 | mb(); |
| 106 | |
| 107 | /* |
| 108 | * For now, we assume that IOC_FIR is already set to forward some |
| 109 | * error conditions to the System Error handler. If that is not true |
| 110 | * then it will have to be fixed up here. |
| 111 | */ |
| 112 | } |