patch-2.2.11 linux/arch/alpha/kernel/irq.c

• Lines: 118
• Date: Mon Aug 9 12:05:05 1999
• Orig file: v2.2.10/linux/arch/alpha/kernel/irq.c
• Orig date: Sat May 22 13:42:26 1999

diff -u --recursive --new-file v2.2.10/linux/arch/alpha/kernel/irq.c linux/arch/alpha/kernel/irq.c
@@ -868,31 +868,23 @@
 	  unsigned long a3, unsigned long a4, unsigned long a5,
 	  struct pt_regs regs)
 {
-	unsigned long flags;
-
 	switch (type) {
 	case 0:
 #ifdef __SMP__
-		__save_and_cli(flags);
 		handle_ipi(&regs);
-		__restore_flags(flags);
 		return;
 #else
 		printk("Interprocessor interrupt? You must be kidding\n");
 #endif
 		break;
 	case 1:
-		__save_and_cli(flags);
 		handle_irq(RTC_IRQ, -1, &regs);
-		__restore_flags(flags);
 		return;
 	case 2:
 		alpha_mv.machine_check(vector, la_ptr, &regs);
 		return;
 	case 3:
-		__save_and_cli(flags);
 		alpha_mv.device_interrupt(vector, &regs);
-		__restore_flags(flags);
 		return;
 	case 4:
 		perf_irq(vector, &regs);
@@ -908,4 +900,85 @@
 {
 	wrent(entInt, 0);
 	alpha_mv.init_irq();
+}
+
+/*
+ * Machine check reasons.  Defined according to PALcode sources
+ * (osf.h and platform.h).
+ */
+#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
+
+void
+process_mcheck_info(unsigned long vector, unsigned long la_ptr,
+		  struct pt_regs *regs, char *machine,
+		  unsigned int debug, unsigned int expected)
+{
+	struct el_common *mchk_header;
+	unsigned long *ptr;
+	char *reason;
+	int i;
+
+	/*
+	 * See if the machine check is due to a badaddr() and if so,
+	 * ignore it.
+	 */
+	if (debug)
+		printk(KERN_CRIT "%s machine check %s\n", machine,
+		       (expected?"expected.":"NOT expected!!!"));
+	if (expected)
+		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) {
+	case MCHK_K_TPERR:	reason = "tag parity error"; break;
+	case MCHK_K_TCPERR:	reason = "tag control parity error"; break;
+	case MCHK_K_HERR:	reason = "generic hard error"; break;
+	case MCHK_K_ECC_C:	reason = "correctable ECC error"; break;
+	case MCHK_K_ECC_NC:	reason = "uncorrectable ECC error"; break;
+	case MCHK_K_OS_BUGCHECK: reason = "OS-specific PAL bugcheck"; break;
+	case MCHK_K_PAL_BUGCHECK: 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 0x205: reason = "parity error detected by CIA"; break;
+	case 0x207: reason = "non-existent memory error"; 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 > 1) {
+
+		/* Dump the logout area to give all info.  */
+		ptr = (unsigned long *)la_ptr;
+		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]);
+		}
+	}
 }