112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
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#define DEBUG
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/smp.h>
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#include <asm/reg.h>
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/machdep.h>
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#include "ras.h"
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#include "cbe_regs.h"
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static void dump_fir(int cpu)
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{
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struct cbe_pmd_regs __iomem *pregs = cbe_get_cpu_pmd_regs(cpu);
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struct cbe_iic_regs __iomem *iregs = cbe_get_cpu_iic_regs(cpu);
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if (pregs == NULL)
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return;
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/* Todo: do some nicer parsing of bits and based on them go down
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* to other sub-units FIRs and not only IIC
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*/
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printk(KERN_ERR "Global Checkstop FIR : 0x%016lx\n",
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in_be64(&pregs->checkstop_fir));
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printk(KERN_ERR "Global Recoverable FIR : 0x%016lx\n",
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in_be64(&pregs->checkstop_fir));
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printk(KERN_ERR "Global MachineCheck FIR : 0x%016lx\n",
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in_be64(&pregs->spec_att_mchk_fir));
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if (iregs == NULL)
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return;
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printk(KERN_ERR "IOC FIR : 0x%016lx\n",
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in_be64(&iregs->ioc_fir));
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}
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void cbe_system_error_exception(struct pt_regs *regs)
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{
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int cpu = smp_processor_id();
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printk(KERN_ERR "System Error Interrupt on CPU %d !\n", cpu);
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dump_fir(cpu);
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dump_stack();
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}
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void cbe_maintenance_exception(struct pt_regs *regs)
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{
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int cpu = smp_processor_id();
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/*
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* Nothing implemented for the maintenance interrupt at this point
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*/
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printk(KERN_ERR "Unhandled Maintenance interrupt on CPU %d !\n", cpu);
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dump_stack();
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}
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void cbe_thermal_exception(struct pt_regs *regs)
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{
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int cpu = smp_processor_id();
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/*
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* Nothing implemented for the thermal interrupt at this point
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*/
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printk(KERN_ERR "Unhandled Thermal interrupt on CPU %d !\n", cpu);
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dump_stack();
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}
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static int cbe_machine_check_handler(struct pt_regs *regs)
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{
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int cpu = smp_processor_id();
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printk(KERN_ERR "Machine Check Interrupt on CPU %d !\n", cpu);
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dump_fir(cpu);
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/* No recovery from this code now, lets continue */
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return 0;
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}
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void __init cbe_ras_init(void)
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{
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unsigned long hid0;
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/*
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* Enable System Error & thermal interrupts and wakeup conditions
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*/
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hid0 = mfspr(SPRN_HID0);
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hid0 |= HID0_CBE_THERM_INT_EN | HID0_CBE_THERM_WAKEUP |
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HID0_CBE_SYSERR_INT_EN | HID0_CBE_SYSERR_WAKEUP;
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mtspr(SPRN_HID0, hid0);
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mb();
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/*
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* Install machine check handler. Leave setting of precise mode to
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* what the firmware did for now
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*/
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ppc_md.machine_check_exception = cbe_machine_check_handler;
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mb();
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/*
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* For now, we assume that IOC_FIR is already set to forward some
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* error conditions to the System Error handler. If that is not true
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* then it will have to be fixed up here.
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*/
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}
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