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#define DEBUG
#include <linux/config.h>
#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.
*/
}
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