Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * ISA Plug & Play support
3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 */
21
22#ifndef LINUX_ISAPNP_H
23#define LINUX_ISAPNP_H
24
25#include <linux/errno.h>
26#include <linux/pnp.h>
27
28/*
29 *
30 */
31
32#define ISAPNP_VENDOR(a,b,c) (((((a)-'A'+1)&0x3f)<<2)|\
33 ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
34 ((((c)-'A'+1)&0x1f)<<8))
35#define ISAPNP_DEVICE(x) ((((x)&0xf000)>>8)|\
36 (((x)&0x0f00)>>8)|\
37 (((x)&0x00f0)<<8)|\
38 (((x)&0x000f)<<8))
39#define ISAPNP_FUNCTION(x) ISAPNP_DEVICE(x)
40
41/*
42 *
43 */
44
45#ifdef __KERNEL__
46
47#define DEVICE_COUNT_COMPATIBLE 4
48
49#define ISAPNP_ANY_ID 0xffff
50#define ISAPNP_CARD_DEVS 8
51
52#define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
53 .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
54#define ISAPNP_CARD_END \
55 .card_vendor = 0, .card_device = 0
56#define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
57 { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
58
59/* export used IDs outside module */
60#define ISAPNP_CARD_TABLE(name) \
61 MODULE_GENERIC_TABLE(isapnp_card, name)
62
63struct isapnp_card_id {
64 unsigned long driver_data; /* data private to the driver */
65 unsigned short card_vendor, card_device;
66 struct {
67 unsigned short vendor, function;
68 } devs[ISAPNP_CARD_DEVS]; /* logical devices */
69};
70
71#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
72 .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device = ISAPNP_DEVICE(_cdevice), \
73 .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
74#define ISAPNP_DEVICE_SINGLE_END \
75 .card_vendor = 0, .card_device = 0
76
77struct isapnp_device_id {
78 unsigned short card_vendor, card_device;
79 unsigned short vendor, function;
80 unsigned long driver_data; /* data private to the driver */
81};
82
83#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
84
85#define __ISAPNP__
86
87/* lowlevel configuration */
88int isapnp_present(void);
89int isapnp_cfg_begin(int csn, int device);
90int isapnp_cfg_end(void);
91unsigned char isapnp_read_byte(unsigned char idx);
92void isapnp_write_byte(unsigned char idx, unsigned char val);
93
94#ifdef CONFIG_PROC_FS
95int isapnp_proc_init(void);
96int isapnp_proc_done(void);
97#else
98static inline int isapnp_proc_init(void) { return 0; }
99static inline int isapnp_proc_done(void) { return 0; }
100#endif
101
102/* compat */
103struct pnp_card *pnp_find_card(unsigned short vendor,
104 unsigned short device,
105 struct pnp_card *from);
106struct pnp_dev *pnp_find_dev(struct pnp_card *card,
107 unsigned short vendor,
108 unsigned short function,
109 struct pnp_dev *from);
110
111#else /* !CONFIG_ISAPNP */
112
113/* lowlevel configuration */
114static inline int isapnp_present(void) { return 0; }
115static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
116static inline int isapnp_cfg_end(void) { return -ENODEV; }
117static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
118static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
119
120static inline struct pnp_card *pnp_find_card(unsigned short vendor,
121 unsigned short device,
122 struct pnp_card *from) { return NULL; }
123static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
124 unsigned short vendor,
125 unsigned short function,
126 struct pnp_dev *from) { return NULL; }
127
128#endif /* CONFIG_ISAPNP */
129
130#endif /* __KERNEL__ */
131#endif /* LINUX_ISAPNP_H */