patch-2.3.14 linux/arch/alpha/kernel/irq.c

• Lines: 100
• Date: Fri Aug 13 11:53:50 1999
• Orig file: v2.3.13/linux/arch/alpha/kernel/irq.c
• Orig date: Wed Jul 21 15:46:48 1999

diff -u --recursive --new-file v2.3.13/linux/arch/alpha/kernel/irq.c linux/arch/alpha/kernel/irq.c
@@ -904,3 +904,99 @@
 	wrent(entInt, 0);
 	alpha_mv.init_irq();
 }
+
+
+/*
+ */
+#define MCHK_K_TPERR           0x0080
+#define MCHK_K_TCPERR          0x0082
+#define MCHK_K_HERR            0x0084
+#define MCHK_K_ECC_C           0x0086
+#define MCHK_K_ECC_NC          0x0088
+#define MCHK_K_OS_BUGCHECK     0x008A
+#define MCHK_K_PAL_BUGCHECK    0x0090
+
+#ifndef __SMP__
+struct mcheck_info __mcheck_info;
+#endif
+
+void
+process_mcheck_info(unsigned long vector, unsigned long la_ptr,
+		    struct pt_regs *regs, const char *machine,
+		    int expected)
+{
+	struct el_common *mchk_header;
+	const char *reason;
+
+	/*
+	 * See if the machine check is due to a badaddr() and if so,
+	 * ignore it.
+	 */
+
+#if DEBUG_MCHECK > 0
+	 printk(KERN_CRIT "%s machine check %s\n", machine,
+	        expected ? "expected." : "NOT expected!!!");
+#endif
+
+	if (expected) {
+		int cpu = smp_processor_id();
+		mcheck_expected(cpu) = 0;
+		mcheck_taken(cpu) = 1;
+		return;
+	}
+
+	mchk_header = (struct el_common *)la_ptr;
+
+	printk(KERN_CRIT "%s machine check: vector=0x%lx pc=0x%lx code=0x%lx\n",
+	       machine, vector, regs->pc, mchk_header->code);
+
+	switch ((unsigned int) mchk_header->code) {
+	/* Machine check reasons.  Defined according to PALcode sources.  */
+	case 0x80: reason = "tag parity error"; break;
+	case 0x82: reason = "tag control parity error"; break;
+	case 0x84: reason = "generic hard error"; break;
+	case 0x86: reason = "correctable ECC error"; break;
+	case 0x88: reason = "uncorrectable ECC error"; break;
+	case 0x8A: reason = "OS-specific PAL bugcheck"; break;
+	case 0x90: reason = "callsys in kernel mode"; break;
+	case 0x96: reason = "i-cache read retryable error"; break;
+	case 0x98: reason = "processor detected hard error"; break;
+	
+	/* System specific (these are for Alcor, at least): */
+	case 0x203: reason = "system detected uncorrectable ECC error"; break;
+	case 0x204: reason = "SIO SERR occurred on PCI bus"; break;
+	case 0x205: reason = "parity error detected by CIA"; break;
+	case 0x206: reason = "SIO IOCHK occurred on ISA bus"; break;
+	case 0x207: reason = "non-existent memory error"; break;
+	case 0x208: reason = "MCHK_K_DCSR"; break;
+	case 0x209: reason = "PCI SERR detected"; break;
+	case 0x20b: reason = "PCI data parity error detected"; break;
+	case 0x20d: reason = "PCI address parity error detected"; break;
+	case 0x20f: reason = "PCI master abort error"; break;
+	case 0x211: reason = "PCI target abort error"; break;
+	case 0x213: reason = "scatter/gather PTE invalid error"; break;
+	case 0x215: reason = "flash ROM write error"; break;
+	case 0x217: reason = "IOA timeout detected"; break;
+	case 0x219: reason = "IOCHK#, EISA add-in board parity or other catastrophic error"; break;
+	case 0x21b: reason = "EISA fail-safe timer timeout"; break;
+	case 0x21d: reason = "EISA bus time-out"; break;
+	case 0x21f: reason = "EISA software generated NMI"; break;
+	case 0x221: reason = "unexpected ev5 IRQ[3] interrupt"; break;
+	default: reason = "unknown"; break;
+	}
+
+	printk(KERN_CRIT "machine check type: %s%s\n",
+	       reason, mchk_header->retry ? " (retryable)" : "");
+	
+#if DEBUG_MCHECK > 1
+	{
+		/* Dump the logout area to give all info.  */
+		unsigned long *ptr = (unsigned long *)la_ptr;
+		long i;
+		for (i = 0; i < mchk_header->size / sizeof(long); i += 2) {
+			printk(KERN_CRIT "   +%8lx %016lx %016lx\n",
+			       i*sizeof(long), ptr[i], ptr[i+1]);
+		}
+	}
+#endif
+}