1 files changed, 135 insertions, 0 deletions
diff --git a/include/linux/ipmi-fru.h b/include/linux/ipmi-fru.h
new file mode 100644
index 000000000000..4d3a76380e32
--- /dev/null
+++ b/include/linux/ipmi-fru.h
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2012 CERN (www.cern.ch)
+ * Author: Alessandro Rubini <rubini@gnudd.com>
+ *
+ * Released according to the GNU GPL, version 2 or any later version.
+ *
+ * This work is part of the White Rabbit project, a research effort led
+ * by CERN, the European Institute for Nuclear Research.
+ */
+#ifndef __LINUX_IPMI_FRU_H__
+#define __LINUX_IPMI_FRU_H__
+#ifdef __KERNEL__
+#  include <linux/types.h>
+#  include <linux/string.h>
+#else
+#  include <stdint.h>
+#  include <string.h>
+#endif
+
+/*
+ * These structures match the unaligned crap we have in FRU1011.pdf
+ * (http://download.intel.com/design/servers/ipmi/FRU1011.pdf)
+ */
+
+/* chapter 8, page 5 */
+struct fru_common_header {
+	uint8_t format;			/* 0x01 */
+	uint8_t internal_use_off;	/* multiple of 8 bytes */
+	uint8_t chassis_info_off;	/* multiple of 8 bytes */
+	uint8_t board_area_off;		/* multiple of 8 bytes */
+	uint8_t product_area_off;	/* multiple of 8 bytes */
+	uint8_t multirecord_off;	/* multiple of 8 bytes */
+	uint8_t pad;			/* must be 0 */
+	uint8_t checksum;		/* sum modulo 256 must be 0 */
+};
+
+/* chapter 9, page 5 -- internal_use: not used by us */
+
+/* chapter 10, page 6 -- chassis info: not used by us */
+
+/* chapter 13, page 9 -- used by board_info_area below */
+struct fru_type_length {
+	uint8_t type_length;
+	uint8_t data[0];
+};
+
+/* chapter 11, page 7 */
+struct fru_board_info_area {
+	uint8_t format;			/* 0x01 */
+	uint8_t area_len;		/* multiple of 8 bytes */
+	uint8_t language;		/* I hope it's 0 */
+	uint8_t mfg_date[3];		/* LSB, minutes since 1996-01-01 */
+	struct fru_type_length tl[0];	/* type-length stuff follows */
+
+	/*
+	 * the TL there are in order:
+	 * Board Manufacturer
+	 * Board Product Name
+	 * Board Serial Number
+	 * Board Part Number
+	 * FRU File ID (may be null)
+	 * more manufacturer-specific stuff
+	 * 0xc1 as a terminator
+	 * 0x00 pad to a multiple of 8 bytes - 1
+	 * checksum (sum of all stuff module 256 must be zero)
+	 */
+};
+
+enum fru_type {
+	FRU_TYPE_BINARY		= 0x00,
+	FRU_TYPE_BCDPLUS	= 0x40,
+	FRU_TYPE_ASCII6		= 0x80,
+	FRU_TYPE_ASCII		= 0xc0, /* not ascii: depends on language */
+};
+
+/*
+ * some helpers
+ */
+static inline struct fru_board_info_area *fru_get_board_area(
+	const struct fru_common_header *header)
+{
+	/* we know for sure that the header is 8 bytes in size */
+	return (struct fru_board_info_area *)(header + header->board_area_off);
+}
+
+static inline int fru_type(struct fru_type_length *tl)
+{
+	return tl->type_length & 0xc0;
+}
+
+static inline int fru_length(struct fru_type_length *tl)
+{
+	return (tl->type_length & 0x3f) + 1; /* len of whole record */
+}
+
+/* assume ascii-latin1 encoding */
+static inline int fru_strlen(struct fru_type_length *tl)
+{
+	return fru_length(tl) - 1;
+}
+
+static inline char *fru_strcpy(char *dest, struct fru_type_length *tl)
+{
+	int len = fru_strlen(tl);
+	memcpy(dest, tl->data, len);
+	dest[len] = '\0';
+	return dest;
+}
+
+static inline struct fru_type_length *fru_next_tl(struct fru_type_length *tl)
+{
+	return tl + fru_length(tl);
+}
+
+static inline int fru_is_eof(struct fru_type_length *tl)
+{
+	return tl->type_length == 0xc1;
+}
+
+/*
+ * External functions defined in fru-parse.c.
+ */
+extern int fru_header_cksum_ok(struct fru_common_header *header);
+extern int fru_bia_cksum_ok(struct fru_board_info_area *bia);
+
+/* All these 4 return allocated strings by calling fru_alloc() */
+extern char *fru_get_board_manufacturer(struct fru_common_header *header);
+extern char *fru_get_product_name(struct fru_common_header *header);
+extern char *fru_get_serial_number(struct fru_common_header *header);
+extern char *fru_get_part_number(struct fru_common_header *header);
+
+/* This must be defined by the caller of the above functions */
+extern void *fru_alloc(size_t size);
+
+#endif /* __LINUX_IMPI_FRU_H__ */