arch/mips/sgi-ip32/crime.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2001, 2003 Keith M Wesolowski
   7  */
   8 #include <linux/types.h>
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/interrupt.h>
  12 #include <asm/bootinfo.h>
  13 #include <asm/mipsregs.h>
  14 #include <asm/ptrace.h>
  15 #include <asm/page.h>
  16 #include <asm/ip32/crime.h>
  17 #include <asm/ip32/mace.h>
  18
  19 void *sgi_crime;
  20 struct sgi_mace *mace;
  21
  22 void __init crime_init(void)
  23 {
  24         unsigned int id, rev;
  25         const int field = 2 * sizeof(unsigned long);
  26
  27         sgi_crime = ioremap(CRIME_BASE, 1);
  28         mace = ioremap(MACE_BASE, sizeof(struct sgi_mace));
  29
  30         id = crime_read(CRIME_ID);
  31         rev = id & CRIME_ID_REV;
  32         id = (id & CRIME_ID_IDBITS) >> 4;
  33
  34         printk (KERN_INFO "CRIME id %1x rev %d at 0x%0*lx\n",
  35                 id, rev, field, (unsigned long) CRIME_BASE);
  36 }
  37
  38 irqreturn_t
  39 crime_memerr_intr (unsigned int irq, void *dev_id, struct pt_regs *regs)
  40 {
  41         unsigned long stat, addr;
  42         int fatal = 0;
  43
  44         stat = crime_read(CRIME_MEM_ERROR_STAT) & CRIME_MEM_ERROR_STAT_MASK;
  45         addr = crime_read(CRIME_MEM_ERROR_ADDR) & CRIME_MEM_ERROR_ADDR_MASK;
  46
  47         printk("CRIME memory error at 0x%08lx ST 0x%08lx<", addr, stat);
  48
  49         if (stat & CRIME_MEM_ERROR_INV)
  50                 printk("INV,");
  51         if (stat & CRIME_MEM_ERROR_ECC) {
  52                 unsigned long ecc_syn = crime_read(CRIME_MEM_ERROR_ECC_SYN) &
  53                                         CRIME_MEM_ERROR_ECC_SYN_MASK;
  54                 unsigned long ecc_gen = crime_read(CRIME_MEM_ERROR_ECC_CHK) &
  55                                         CRIME_MEM_ERROR_ECC_CHK_MASK;
  56
  57                 printk("ECC,SYN=0x%08lx,GEN=0x%08lx,", ecc_syn, ecc_gen);
  58         }
  59         if (stat & CRIME_MEM_ERROR_MULTIPLE) {
  60                 fatal = 1;
  61                 printk("MULTIPLE,");
  62         }
  63         if (stat & CRIME_MEM_ERROR_HARD_ERR) {
  64                 fatal = 1;
  65                 printk("HARD,");
  66         }
  67         if (stat & CRIME_MEM_ERROR_SOFT_ERR)
  68                 printk("SOFT,");
  69         if (stat & CRIME_MEM_ERROR_CPU_ACCESS)
  70                 printk("CPU,");
  71         if (stat & CRIME_MEM_ERROR_VICE_ACCESS)
  72                 printk("VICE,");
  73         if (stat & CRIME_MEM_ERROR_GBE_ACCESS)
  74                 printk("GBE,");
  75         if (stat & CRIME_MEM_ERROR_RE_ACCESS)
  76                 printk("RE,REID=0x%02lx,", (stat & CRIME_MEM_ERROR_RE_ID)>>8);
  77         if (stat & CRIME_MEM_ERROR_MACE_ACCESS)
  78                 printk("MACE,MACEID=0x%02lx,", stat & CRIME_MEM_ERROR_MACE_ID);
  79
  80         crime_write(0, CRIME_MEM_ERROR_STAT);
  81
  82         if (fatal) {
  83                 printk("FATAL>\n");
  84                 panic("Fatal memory error.");
  85         } else
  86                 printk("NONFATAL>\n");
  87
  88         return IRQ_HANDLED;
  89 }
  90
  91 irqreturn_t
  92 crime_cpuerr_intr (unsigned int irq, void *dev_id, struct pt_regs *regs)
  93 {
  94         unsigned long stat = crime_read(CRIME_CPU_ERROR_STAT) &
  95                              CRIME_CPU_ERROR_MASK;
  96         uint64_t addr = crime_read(CRIME_CPU_ERROR_ADDR) &
  97                         CRIME_CPU_ERROR_ADDR_MASK;
  98         addr <<= 2;
  99
 100         printk ("CRIME CPU error at 0x%09lx status 0x%08lx\n", addr, stat);
 101
 102         crime_write(0, CRIME_CPU_ERROR_STAT);
 103
 104         return IRQ_HANDLED;
 105 }