1 files changed, 112 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
new file mode 100644
index 000000000000..033ad6e2827b
--- /dev/null
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -0,0 +1,112 @@
+#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.
+         */
+}