This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / powerpc / platforms / cell / ras.c

diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
new file mode 100644 (file)
index 0000000..0984c70
--- /dev/null
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -0,0 +1,111 @@
+#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.
+        */
+}