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SDB - Self-describing Bus
Commit dd8a13bc authored by Alessandro Rubini's avatar Alessandro Rubini
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sdb.h (both places): bless as official v1.1 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent c9aa3651
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Showing with 44 additions and 22 deletions
docs/specification/sdb.h
View file @ dd8a13bc
/*
* This is the proposed version 1.1 of sdb.h, still not official
* This is the official version 1.1 of sdb.h
*/
#ifndef __SDB_H__
#define __SDB_H__
......@@ -61,7 +61,7 @@ enum sdb_record_type {
* 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-" */
#define SDB_MAGIC 0x5344422d /* "SDB-" */
struct sdb_interconnect {
uint32_t sdb_magic; /* 0x00-0x03 */
uint16_t sdb_records; /* 0x04-0x05 */
......
sdbfs/include/linux/sdb.h
View file @ dd8a13bc
/*
* This is a modified version 1.0 of sdb.h, not the official spec version
* This is the official version 1.1 of sdb.h
*/
#ifndef __SDB_H__
#define __SDB_H__
......@@ -18,7 +18,7 @@
* magic number at the head of the interconnect record
*/
/* Product, 40 bytes at offset 24, 8-byte alignmed
/* 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
......@@ -34,7 +34,7 @@ struct sdb_product {
};
/*
* Component, 56 bytes at offset 8, 8-byte aligned
* Component, 56 bytes at offset 8, 8-byte aligned
*
* The address range is first to last, inclusive
* (for example 0x100000 - 0x10ffff)
......@@ -47,19 +47,21 @@ struct sdb_component {
/* 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_empty = 0xFF,
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.
* record, version is 1. The bus type is enumerated later.
*/
#define SDB_MAGIC 0x5344422d /* "SDB-" */
#define SDB_MAGIC 0x5344422d /* "SDB-" */
struct sdb_interconnect {
uint32_t sdb_magic; /* 0x00-0x03 */
uint16_t sdb_records; /* 0x04-0x05 */
......@@ -102,10 +104,33 @@ struct sdb_integration {
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 miminal efforts and
* 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.
*/
......@@ -120,18 +145,15 @@ enum sdb_bus_type {
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_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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