patch-2.4.20 linux-2.4.20/arch/ppc/platforms/error_log.c

• Lines: 187
• Date: Thu Nov 28 15:53:11 2002
• Orig file: linux-2.4.19/arch/ppc/platforms/error_log.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/arch/ppc/platforms/error_log.c linux-2.4.20/arch/ppc/platforms/error_log.c
@@ -0,0 +1,186 @@
+/*
+ * BK Id: SCCS/s.error_log.c 1.6 05/17/01 18:14:21 cort
+ */
+/*
+ *  arch/ppc/kernel/error_log.c
+ *  
+ *  Copyright (c) 2000 Tilmann Bitterberg
+ *  (tilmann@bitterberg.de)
+ *
+ *  Error processing of errors found by rtas even-scan routine
+ *  which is done with every heartbeat. (chrp_setup.c)
+ */
+
+#include <linux/sched.h>
+
+#include <asm/prom.h>
+
+#include "error_log.h"
+
+/* ****************************************************************** */
+/* 
+ * EVENT-SCAN
+ * The whole stuff below here doesn't take any action when it found
+ * an error, it just prints as much information as possible and 
+ * then its up to the user to decide what to do.
+ *
+ * Returns 0 if no errors were found
+ * Returns 1 if there may be more errors
+ */
+int ppc_rtas_errorlog_scan(void)
+{
+const char *_errlog_severity[] = {
+#ifdef VERBOSE_ERRORS
+	"No Error\n\t\
+Should require no further information",
+	"Event\n\t\
+This is not really an error, it is an event. I use events\n\t\
+to communicate with RTAS back and forth.",
+	"Warning\n\t\
+Indicates a non-state-losing error, either fully recovered\n\t\
+by RTAS or not needing recovery. Ignore it.",
+	"Error sync\n\t\
+May only be fatal to a certain program or thread. Recovery\n\t\
+and continuation is possible, if I only had a handler for\n\t\
+this. Less serious",
+	"Error\n\t\
+Less serious, but still causing a loss of data and state.\n\t\
+I can't tell you exactly what to do, You have to decide\n\t\
+with help from the target and initiator field, what kind\n\t\
+of further actions may take place.",
+	"Fatal\n\t\
+Represent a permanent hardware failure and I believe this\n\t\
+affects my overall performance and behaviour. I would not\n\t\
+attempt to continue normal operation."
+#else
+	"No Error",
+	"Event",
+	"Warning",
+	"Error sync",
+	"Error",
+	"Fatal"
+#endif /* VERBOSE_ERRORS */
+};
+
+#if 0 /* unused?? */
+const char *_errlog_disposition[] = {
+#ifdef VERBOSE_ERRORS
+	"Fully recovered\n\t\
+There was an error, but it is fully recovered by RTAS.",
+	"Limited recovery\n\t\
+RTAS was able to recover the state of the machine, but some\n\t\
+feature of the machine has been disabled or lost (for example\n\t\
+error checking) or performance may suffer.",
+	"Not recovered\n\t\
+Whether RTAS did not try to recover anything or recovery failed:\n\t\
+HOUSTON, WE HAVE A PROBLEM!"
+#else
+	"Fully recovered",
+	"Limited recovery",
+	"Not recovered"
+#endif /* VERBOSE_ERRORS */
+};
+#endif
+
+const char *_errlog_extended[] = {
+#ifdef VERBOSE_ERRORS
+	"Not present\n\t\
+Sad, the RTAS call didn't return an extended error log.",
+	"Present\n\t\
+The extended log is present and hopefully it contains a lot of\n\t\
+useful information, which leads to the solution of the problem."
+#else
+	"Not present",
+	"Present"
+#endif /* VERBOSE_ERRORS */
+};
+
+const char *_errlog_initiator[] = { 
+	"Unknown or not applicable",
+	"CPU",
+	"PCI",
+	"ISA",
+	"Memory",
+	"Power management"
+};
+
+const char *_errlog_target[] = { 
+	"Unknown or not applicable",
+	"CPU",
+	"PCI",
+	"ISA",
+	"Memory",
+	"Power management"
+};
+	rtas_error_log error_log;
+	char logdata[1024];
+	int error;
+#if 0 /* unused?? */
+	int retries = 0; /* if HW error, try 10 times */
+#endif
+
+	error = call_rtas ("event-scan", 4, 1, (unsigned long *)&error_log,
+			INTERNAL_ERROR | EPOW_WARNING,
+			0, __pa(logdata), 1024);
+
+	if (error == 1) /* no errors found */
+		return 0;
+
+	if (error == -1) {
+		printk(KERN_ERR "Unable to get errors. Do you a favor and throw this box away\n");
+		return 0;
+	}
+	if (error_log.version != 1)
+		printk(KERN_WARNING "Unknown version (%d), please implement me\n", 
+				error_log.version);
+
+	switch (error_log.disposition) {
+		case DISP_FULLY_RECOVERED:
+			/* there was an error, but everything is fine now */
+			return 0;
+		case DISP_NOT_RECOVERED:
+			printk("We have a really serious Problem!\n");
+		case DISP_LIMITED_RECOVERY:
+			printk("Error classification\n");
+			printk("Severity  : %s\n", 
+					ppc_rtas_errorlog_check_severity (error_log));
+			printk("Initiator : %s\n", 
+					ppc_rtas_errorlog_check_initiator (error_log));
+			printk("Target    : %s\n", 
+					ppc_rtas_errorlog_check_target (error_log));
+			printk("Type      : %s\n", 
+					ppc_rtas_errorlog_check_type (error_log));
+			printk("Ext. log  : %s\n", 
+					ppc_rtas_errorlog_check_extended (error_log));
+			if (error_log.extended)
+				ppc_rtas_errorlog_disect_extended (logdata);
+			return 1;	
+		default:
+			/* nothing */
+			break;
+	}
+	return 0;
+}
+/* ****************************************************************** */
+const char * ppc_rtas_errorlog_check_type (rtas_error_log error_log)
+{
+	const char *_errlog_type[] = {
+		"unknown type",
+		"too many tries failed",
+		"TCE error",
+		"RTAS device failed",
+		"target timed out",
+		"parity error on data",			/* 5 */
+		"parity error on address",
+		"parity error on external cache",
+		"access to invalid address",
+		"uncorrectable ECC error",
+		"corrected ECC error"			/* 10 */
+	};
+	if (error_log.type == TYPE_EPOW) 
+		return "EPOW"; 
+	if (error_log.type >= TYPE_PMGM_POWER_SW_ON)
+		return "PowerMGM Event (not handled right now)";
+	return _errlog_type[error_log.type];
+}
+