This patch adds IBM specific v6 extended log definition and utilities.
Signed-off-by: Tseng-Hui (Frank) Lin <tseng...@us.ibm.com>
---
arch/powerpc/platforms/pseries/Kconfig | 6 +
arch/powerpc/platforms/pseries/Makefile | 1 +
arch/powerpc/platforms/pseries/pseries_event_log.c | 62 +++++
arch/powerpc/platforms/pseries/pseries_event_log.h | 50 ++++
4 files changed, 119 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/Kconfig
b/arch/powerpc/platforms/pseries/Kconfig
index c667f0f..6f29642 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -37,6 +37,11 @@ config SCANLOG
tristate "Scanlog dump interface"
depends on RTAS_PROC && PPC_PSERIES
+config PSERIES_EVENT_LOG
+ bool
+ depends on PPC_PSERIES && RTAS_ERROR_LOGGING
+ default n
+
config LPARCFG
bool "LPAR Configuration Data"
depends on PPC_PSERIES || PPC_ISERIES
@@ -81,3 +86,4 @@ config DTL
which are accessible through a debugfs file.
Say N if you are unsure.
+
diff --git a/arch/powerpc/platforms/pseries/Makefile
b/arch/powerpc/platforms/pseries/Makefile
index 046ace9..1cc20ba 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_HCALL_STATS) += hvCall_inst.o
obj-$(CONFIG_PHYP_DUMP) += phyp_dump.o
obj-$(CONFIG_CMM) += cmm.o
obj-$(CONFIG_DTL) += dtl.o
+obj-$(CONFIG_PSERIES_EVENT_LOG) += pseries_event_log.o
ifeq ($(CONFIG_PPC_PSERIES),y)
obj-$(CONFIG_SUSPEND) += suspend.o
diff --git a/arch/powerpc/platforms/pseries/pseries_event_log.c
b/arch/powerpc/platforms/pseries/pseries_event_log.c
new file mode 100644
index 0000000..c00837d
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/pseries_event_log.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010 Tseng-Hui (Frank) Lin, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/*
+ * IBM pSerie platform event log specific functions.
+ * All data in this file is in big endian.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include <asm/rtas.h>
+
+#include "pseries_event_log.h"
+
+/*
+ * Find the size of data portation in a platform event log section.
+ */
+size_t pseries_elog_sect_data_len(void *sect_data_p)
+{
+ struct pseries_elog_section *p;
+
+ p = container_of(sect_data_p, struct pseries_elog_section, sect_data);
+ return(p->length - offsetof(struct pseries_elog_section, sect_data));
+}
+
+/*
+ * Find data portion of a specific section in extended error/event log.
+ * Return:
+ * location of section data
+ * NULL if not found
+ */
+void *pseries_elog_find_section(
+ struct rtas_error_log_v6ext *v6ext, size_t v6ext_len,
+ uint16_t sect_id)
+{
+ struct pseries_elog_section *sect_p;
+ uint8_t *p, *log_end;
+
+ if ((v6ext_len < sizeof(struct rtas_error_log_v6ext)) ||
+ (v6ext->log_format != RTAS_V6EXT_LOG_FORMAT_EVENT_LOG) ||
+ (v6ext->company_id != RTAS_V6EXT_COMPANY_ID_IBM))
+ return NULL;
+
+ log_end = (uint8_t *) v6ext + v6ext_len;
+ p = (uint8_t *) v6ext->vendor_log;
+ while (p < log_end) {
+ sect_p = (struct pseries_elog_section *) p;
+ if (sect_p->id == sect_id)
+ return sect_p->sect_data;
+ p += sect_p->length;
+ }
+
+ return NULL;
+}
+
diff --git a/arch/powerpc/platforms/pseries/pseries_event_log.h
b/arch/powerpc/platforms/pseries/pseries_event_log.h
new file mode 100644
index 0000000..e7fc452
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/pseries_event_log.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2010 Tseng-Hui (Frank) Lin, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _PSERIES_PSERIES_EVENT_LOG_H
+#define _PSERIES_PSERIES_EVENT_LOG_H
+
+#include <linux/types.h>
+
+#include <asm/rtas.h>
+
+/* Two bytes ASCII section IDs */
+#define PSERIES_ELOG_SECT_ID_PRIV_HDR (('P' << 8) | 'H')
+#define PSERIES_ELOG_SECT_ID_USER_HDR (('U' << 8) | 'H')
+#define PSERIES_ELOG_SECT_ID_PRIMARY_SRC (('P' << 8) | 'S')
+#define PSERIES_ELOG_SECT_ID_EXTENDED_UH (('E' << 8) | 'H')
+#define PSERIES_ELOG_SECT_ID_FAILING_MTMS (('M' << 8) | 'T')
+#define PSERIES_ELOG_SECT_ID_SECONDARY_SRC (('S' << 8) | 'S')
+#define PSERIES_ELOG_SECT_ID_DUMP_LOCATOR (('D' << 8) | 'H')
+#define PSERIES_ELOG_SECT_ID_FW_ERROR (('S' << 8) | 'W')
+#define PSERIES_ELOG_SECT_ID_IMPACT_PART_ID (('L' << 8) | 'P')
+#define PSERIES_ELOG_SECT_ID_LOGIC_RESOURCE_ID (('L' << 8) | 'R')
+#define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M')
+#define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P')
+#define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E')
+#define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I')
+#define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H')
+#define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D')
+
+/* Vendor specific Platform Error/Event Log Format, Version 6, section header
*/
+
+struct pseries_elog_section {
+ uint16_t id; /* 0x00 2-byte ASCII section ID */
+ uint16_t length; /* 0x02 Section length in bytes */
+ uint8_t version; /* 0x04 Section version */
+ uint8_t subtype; /* 0x05 Section subtype */
+ uint16_t creator_component; /* 0x06 Creator component ID */
+ uint8_t sect_data[1]; /* 0x08 Start of section data */
+};
+
+size_t pseries_elog_sect_data_len(void *sect_data);
+void *pseries_elog_find_section(struct rtas_error_log_v6ext *v6ext,
+ size_t v6ext_len, uint16_t sect_id);
+
+#endif /* _PSERIES_PSERIES_EVENT_LOG_H */
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