patch-2.3.18 linux/arch/sparc64/kernel/traps.c

• Lines: 131
• Date: Wed Sep 8 11:14:32 1999
• Orig file: v2.3.17/linux/arch/sparc64/kernel/traps.c
• Orig date: Mon Aug 2 22:07:16 1999

diff -u --recursive --new-file v2.3.17/linux/arch/sparc64/kernel/traps.c linux/arch/sparc64/kernel/traps.c
@@ -1,4 +1,4 @@
-/* $Id: traps.c,v 1.61 1999/07/30 09:35:32 davem Exp $
+/* $Id: traps.c,v 1.62 1999/08/31 19:25:35 davem Exp $
  * arch/sparc64/kernel/traps.c
  *
  * Copyright (C) 1995,1997 David S. Miller (davem@caip.rutgers.edu)
@@ -393,6 +393,124 @@
 	lock_kernel();
 	force_sig(SIGSEGV, current);
 	unlock_kernel();
+}
+
+static char ecc_syndrome_table[] = {
+	0x4c, 0x40, 0x41, 0x48, 0x42, 0x48, 0x48, 0x49,
+	0x43, 0x48, 0x48, 0x49, 0x48, 0x49, 0x49, 0x4a,
+	0x44, 0x48, 0x48, 0x20, 0x48, 0x39, 0x4b, 0x48,
+	0x48, 0x25, 0x31, 0x48, 0x28, 0x48, 0x48, 0x2c,
+	0x45, 0x48, 0x48, 0x21, 0x48, 0x3d, 0x04, 0x48,
+	0x48, 0x4b, 0x35, 0x48, 0x2d, 0x48, 0x48, 0x29,
+	0x48, 0x00, 0x01, 0x48, 0x0a, 0x48, 0x48, 0x4b,
+	0x0f, 0x48, 0x48, 0x4b, 0x48, 0x49, 0x49, 0x48,
+	0x46, 0x48, 0x48, 0x2a, 0x48, 0x3b, 0x27, 0x48,
+	0x48, 0x4b, 0x33, 0x48, 0x22, 0x48, 0x48, 0x2e,
+	0x48, 0x19, 0x1d, 0x48, 0x1b, 0x4a, 0x48, 0x4b,
+	0x1f, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
+	0x48, 0x4b, 0x24, 0x48, 0x07, 0x48, 0x48, 0x36,
+	0x4b, 0x48, 0x48, 0x3e, 0x48, 0x30, 0x38, 0x48,
+	0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x16, 0x48,
+	0x48, 0x12, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
+	0x47, 0x48, 0x48, 0x2f, 0x48, 0x3f, 0x4b, 0x48,
+	0x48, 0x06, 0x37, 0x48, 0x23, 0x48, 0x48, 0x2b,
+	0x48, 0x05, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x32,
+	0x26, 0x48, 0x48, 0x3a, 0x48, 0x34, 0x3c, 0x48,
+	0x48, 0x11, 0x15, 0x48, 0x13, 0x4a, 0x48, 0x4b,
+	0x17, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
+	0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x1e, 0x48,
+	0x48, 0x1a, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
+	0x48, 0x08, 0x0d, 0x48, 0x02, 0x48, 0x48, 0x49,
+	0x03, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x4b, 0x48,
+	0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x10, 0x48,
+	0x48, 0x14, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
+	0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x18, 0x48,
+	0x48, 0x1c, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
+	0x4a, 0x0c, 0x09, 0x48, 0x0e, 0x48, 0x48, 0x4b,
+	0x0b, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x4b, 0x4a
+};
+
+/* cee_trap in entry.S encodes AFSR/UDBH/UDBL error status
+ * in the following format.  The AFAR is left as is, with
+ * reserved bits cleared, and is a raw 40-bit physical
+ * address.
+ */
+#define CE_STATUS_UDBH_UE		(1UL << (43 + 9))
+#define CE_STATUS_UDBH_CE		(1UL << (43 + 8))
+#define CE_STATUS_UDBH_ESYNDR		(0xffUL << 43)
+#define CE_STATUS_UDBH_SHIFT		43
+#define CE_STATUS_UDBL_UE		(1UL << (33 + 9))
+#define CE_STATUS_UDBL_CE		(1UL << (33 + 8))
+#define CE_STATUS_UDBL_ESYNDR		(0xffUL << 33)
+#define CE_STATUS_UDBL_SHIFT		33
+#define CE_STATUS_AFSR_MASK		(0x1ffffffffUL)
+#define CE_STATUS_AFSR_ME		(1UL << 32)
+#define CE_STATUS_AFSR_PRIV		(1UL << 31)
+#define CE_STATUS_AFSR_ISAP		(1UL << 30)
+#define CE_STATUS_AFSR_ETP		(1UL << 29)
+#define CE_STATUS_AFSR_IVUE		(1UL << 28)
+#define CE_STATUS_AFSR_TO		(1UL << 27)
+#define CE_STATUS_AFSR_BERR		(1UL << 26)
+#define CE_STATUS_AFSR_LDP		(1UL << 25)
+#define CE_STATUS_AFSR_CP		(1UL << 24)
+#define CE_STATUS_AFSR_WP		(1UL << 23)
+#define CE_STATUS_AFSR_EDP		(1UL << 22)
+#define CE_STATUS_AFSR_UE		(1UL << 21)
+#define CE_STATUS_AFSR_CE		(1UL << 20)
+#define CE_STATUS_AFSR_ETS		(0xfUL << 16)
+#define CE_STATUS_AFSR_ETS_SHIFT	16
+#define CE_STATUS_AFSR_PSYND		(0xffffUL << 0)
+#define CE_STATUS_AFSR_PSYND_SHIFT	0
+
+/* Layout of Ecache TAG Parity Syndrome of AFSR */
+#define AFSR_ETSYNDROME_7_0		0x1UL /* E$-tag bus bits  <7:0> */
+#define AFSR_ETSYNDROME_15_8		0x2UL /* E$-tag bus bits <15:8> */
+#define AFSR_ETSYNDROME_21_16		0x4UL /* E$-tag bus bits <21:16> */
+#define AFSR_ETSYNDROME_24_22		0x8UL /* E$-tag bus bits <24:22> */
+
+static char *syndrome_unknown = "<Unknown>";
+
+asmlinkage void cee_log(unsigned long ce_status,
+			unsigned long afar,
+			struct pt_regs *regs)
+{
+	char memmod_str[64];
+	char *p;
+	unsigned short scode, udb_reg;
+
+	printk(KERN_WARNING "CPU[%d]: Correctable ECC Error "
+	       "AFSR[%lx] AFAR[%016lx] UDBL[%lx] UDBH[%lx]\n",
+	       smp_processor_id(),
+	       (ce_status & CE_STATUS_AFSR_MASK),
+	       afar,
+	       ((ce_status >> CE_STATUS_UDBL_SHIFT) & 0x3ffUL),
+	       ((ce_status >> CE_STATUS_UDBH_SHIFT) & 0x3ffUL));
+
+	udb_reg = ((ce_status >> CE_STATUS_UDBL_SHIFT) & 0x3ffUL);
+	if (udb_reg & (1 << 8)) {
+		scode = ecc_syndrome_table[udb_reg & 0xff];
+		if (prom_getunumber(scode, afar,
+				    memmod_str, sizeof(memmod_str)) == -1)
+			p = syndrome_unknown;
+		else
+			p = memmod_str;
+		printk(KERN_WARNING "CPU[%d]: UDBL Syndrome[%x] "
+		       "Memory Module \"%s\"\n",
+		       smp_processor_id(), scode, p);
+	}
+
+	udb_reg = ((ce_status >> CE_STATUS_UDBH_SHIFT) & 0x3ffUL);
+	if (udb_reg & (1 << 8)) {
+		scode = ecc_syndrome_table[udb_reg & 0xff];
+		if (prom_getunumber(scode, afar,
+				    memmod_str, sizeof(memmod_str)) == -1)
+			p = syndrome_unknown;
+		else
+			p = memmod_str;
+		printk(KERN_WARNING "CPU[%d]: UDBH Syndrome[%x] "
+		       "Memory Module \"%s\"\n",
+		       smp_processor_id(), scode, p);
+	}
 }
 
 void do_fpe_common(struct pt_regs *regs)