From 3ba8479bb8578c1be3ff53e0bb7ecb4845dfa651 Mon Sep 17 00:00:00 2001
From: Alessandro Rubini <rubini@gnudd.com>
Date: Tue, 14 May 2013 13:09:26 +0200
Subject: [PATCH] include/sdb.h: official version 1.1 of sdb, from
fpga-config-space
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
---
include/sdb.h | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 159 insertions(+)
create mode 100644 include/sdb.h
diff --git a/include/sdb.h b/include/sdb.h
new file mode 100644
index 0000000..fbb76a4
--- /dev/null
+++ b/include/sdb.h
@@ -0,0 +1,159 @@
+/*
+ * This is the official version 1.1 of sdb.h
+ */
+#ifndef __SDB_H__
+#define __SDB_H__
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <stdint.h>
+#endif
+
+/*
+ * All structures are 64 bytes long and are expected
+ * to live in an array, one for each interconnect.
+ * Most fields of the structures are shared among the
+ * various types, and most-specific fields are at the
+ * beginning (for alignment reasons, and to keep the
+ * magic number at the head of the interconnect record
+ */
+
+/* Product, 40 bytes at offset 24, 8-byte aligned
+ *
+ * device_id is vendor-assigned; version is device-specific,
+ * date is hex (e.g 0x20120501), name is UTF-8, blank-filled
+ * and not terminated with a 0 byte.
+ */
+struct sdb_product {
+ uint64_t vendor_id; /* 0x18..0x1f */
+ uint32_t device_id; /* 0x20..0x23 */
+ uint32_t version; /* 0x24..0x27 */
+ uint32_t date; /* 0x28..0x2b */
+ uint8_t name[19]; /* 0x2c..0x3e */
+ uint8_t record_type; /* 0x3f */
+};
+
+/*
+ * Component, 56 bytes at offset 8, 8-byte aligned
+ *
+ * The address range is first to last, inclusive
+ * (for example 0x100000 - 0x10ffff)
+ */
+struct sdb_component {
+ uint64_t addr_first; /* 0x08..0x0f */
+ uint64_t addr_last; /* 0x10..0x17 */
+ struct sdb_product product; /* 0x18..0x3f */
+};
+
+/* Type of the SDB record */
+enum sdb_record_type {
+ sdb_type_interconnect = 0x00,
+ sdb_type_device = 0x01,
+ sdb_type_bridge = 0x02,
+ sdb_type_integration = 0x80,
+ sdb_type_repo_url = 0x81,
+ sdb_type_synthesis = 0x82,
+ sdb_type_empty = 0xFF,
+};
+
+/* Type 0: interconnect (first of the array)
+ *
+ * sdb_records is the length of the table including this first
+ * record, version is 1. The bus type is enumerated later.
+ */
+#define SDB_MAGIC 0x5344422d /* "SDB-" */
+struct sdb_interconnect {
+ uint32_t sdb_magic; /* 0x00-0x03 */
+ uint16_t sdb_records; /* 0x04-0x05 */
+ uint8_t sdb_version; /* 0x06 */
+ uint8_t sdb_bus_type; /* 0x07 */
+ struct sdb_component sdb_component; /* 0x08-0x3f */
+};
+
+/* Type 1: device
+ *
+ * class is 0 for "custom device", other values are
+ * to be standardized; ABI version is for the driver,
+ * bus-specific bits are defined by each bus (see below)
+ */
+struct sdb_device {
+ uint16_t abi_class; /* 0x00-0x01 */
+ uint8_t abi_ver_major; /* 0x02 */
+ uint8_t abi_ver_minor; /* 0x03 */
+ uint32_t bus_specific; /* 0x04-0x07 */
+ struct sdb_component sdb_component; /* 0x08-0x3f */
+};
+
+/* Type 2: bridge
+ *
+ * child is the address of the nested SDB table
+ */
+struct sdb_bridge {
+ uint64_t sdb_child; /* 0x00-0x07 */
+ struct sdb_component sdb_component; /* 0x08-0x3f */
+};
+
+/* Type 0x80: integration
+ *
+ * all types with bit 7 set are meta-information, so
+ * software can ignore the types it doesn't know. Here we
+ * just provide product information for an aggregate device
+ */
+struct sdb_integration {
+ uint8_t reserved[24]; /* 0x00-0x17 */
+ struct sdb_product product; /* 0x08-0x3f */
+};
+
+/* Type 0x81: Top module repository url
+ *
+ * again, an informative field that software can ignore
+ */
+struct sdb_repo_url {
+ uint8_t repo_url[63]; /* 0x00-0x3e */
+ uint8_t record_type; /* 0x3f */
+};
+
+/* Type 0x82: Synthesis tool information
+ *
+ * this informative record
+ */
+struct sdb_synthesis {
+ uint8_t syn_name[16]; /* 0x00-0x0f */
+ uint8_t commit_id[16]; /* 0x10-0x1f */
+ uint8_t tool_name[8]; /* 0x20-0x27 */
+ uint32_t tool_version; /* 0x28-0x2b */
+ uint32_t date; /* 0x2c-0x2f */
+ uint8_t user_name[15]; /* 0x30-0x3e */
+ uint8_t record_type; /* 0x3f */
+};
+
+/* Type 0xff: empty
+ *
+ * this allows keeping empty slots during development,
+ * so they can be filled later with minimal efforts and
+ * no misleading description is ever shipped -- hopefully.
+ * It can also be used to pad a table to a desired length.
+ */
+struct sdb_empty {
+ uint8_t reserved[63]; /* 0x00-0x3e */
+ uint8_t record_type; /* 0x3f */
+};
+
+/* The type of bus, for bus-specific flags */
+enum sdb_bus_type {
+ sdb_wishbone = 0x00,
+ sdb_data = 0x01,
+};
+
+#define SDB_WB_WIDTH_MASK 0x0f
+#define SDB_WB_ACCESS8 0x01
+#define SDB_WB_ACCESS16 0x02
+#define SDB_WB_ACCESS32 0x04
+#define SDB_WB_ACCESS64 0x08
+#define SDB_WB_LITTLE_ENDIAN 0x80
+
+#define SDB_DATA_READ 0x04
+#define SDB_DATA_WRITE 0x02
+#define SDB_DATA_EXEC 0x01
+
+#endif /* __SDB_H__ */
--
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