source: grub-pc/trunk/fuentes/debian/grub-extras/disabled/gpxe/src/include/gpxe/isa_ids.h @ 22

Last change on this file since 22 was 22, checked in by mabarracus, 4 years ago

updated version and apply net.ifnames=0 into debian/rules

File size: 1.6 KB
Line 
1#ifndef ISA_IDS_H
2#define ISA_IDS_H
3
4/*
5 * This file defines IDs as used by ISAPnP and EISA devices.  These
6 * IDs have the format:
7 *
8 * vendor  byte 0 bit  7    must be zero
9 *                bits 6-2  first vendor char in compressed ASCII
10 *                bits 1-0  second vendor char in compressed ASCII (bits 4-3)
11 *         byte 1 bits 7-5  second vendor char in compressed ASCII (bits 2-0)
12 *                bits 4-0  third vendor char in compressed ASCII
13 * product byte 0 bits 7-4  first hex digit of product number
14 *                bits 3-0  second hex digit of product number
15 *         byte 1 bits 7-4  third hex digit of product number
16 *                bits 3-0  hex digit of revision level
17 *
18 * ISA IDs are always expressed in little-endian order, even though
19 * the underlying "meaning" is big-endian.
20 */
21
22FILE_LICENCE ( GPL2_OR_LATER );
23
24#include <byteswap.h>
25
26/*
27 * Construct a vendor ID from three ASCII characters
28 *
29 */
30#define ISA_VENDOR( a, b, c )                                   \
31        bswap_16 ( ( ( ( (a) - 'A' + 1 ) & 0x1f ) << 10 ) |     \
32                   ( ( ( (b) - 'A' + 1 ) & 0x1f ) << 5 ) |      \
33                   ( ( ( (c) - 'A' + 1 ) & 0x1f ) << 0 ) )
34
35#define ISAPNP_VENDOR( a, b, c )        ISA_VENDOR ( a, b, c )
36#define EISA_VENDOR( a, b, c )          ISA_VENDOR ( a, b, c )
37
38#define GENERIC_ISAPNP_VENDOR           ISAPNP_VENDOR ( 'P','N','P' )
39
40/*
41 * Extract product ID and revision from combined product field
42 *
43 */
44#define ISA_PROD_ID_MASK        ( 0xf0ff )
45#define ISA_PROD_ID(product)    ( (product) & ISA_PROD_ID_MASK )
46#define ISA_PROD_REV(product)   ( ( (product) & ~ISA_PROD_ID_MASK ) >> 8 )
47
48/* Functions in isa_ids.c */
49extern char * isa_id_string ( unsigned int vendor, unsigned int product );
50
51#endif /* ISA_IDS_H */
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