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#include <linux/mod_devicetable.h>
47
48#define DEVICE_COUNT_COMPATIBLE 4
49
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
59struct isapnp_card_id {
60 unsigned long driver_data; /* data private to the driver */
61 unsigned short card_vendor, card_device;
62 struct {
63 unsigned short vendor, function;
64 } devs[ISAPNP_CARD_DEVS]; /* logical devices */
65};
66
67#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
68 .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device = ISAPNP_DEVICE(_cdevice), \
69 .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
70#define ISAPNP_DEVICE_SINGLE_END \
71 .card_vendor = 0, .card_device = 0
72
73#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
74
75#define __ISAPNP__
76
77/* lowlevel configuration */
78int isapnp_present(void);
79int isapnp_cfg_begin(int csn, int device);
80int isapnp_cfg_end(void);
81unsigned char isapnp_read_byte(unsigned char idx);
82void isapnp_write_byte(unsigned char idx, unsigned char val);
83
84#ifdef CONFIG_PROC_FS
85int isapnp_proc_init(void);
86int isapnp_proc_done(void);
87#else
88static inline int isapnp_proc_init(void) { return 0; }
89static inline int isapnp_proc_done(void) { return 0; }
90#endif
91
92/* compat */
93struct pnp_card *pnp_find_card(unsigned short vendor,
94 unsigned short device,
95 struct pnp_card *from);
96struct pnp_dev *pnp_find_dev(struct pnp_card *card,
97 unsigned short vendor,
98 unsigned short function,
99 struct pnp_dev *from);
100
101#else /* !CONFIG_ISAPNP */
102
103/* lowlevel configuration */
104static inline int isapnp_present(void) { return 0; }
105static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
106static inline int isapnp_cfg_end(void) { return -ENODEV; }
107static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
108static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
109
110static inline struct pnp_card *pnp_find_card(unsigned short vendor,
111 unsigned short device,
112 struct pnp_card *from) { return NULL; }
113static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
114 unsigned short vendor,
115 unsigned short function,
116 struct pnp_dev *from) { return NULL; }
117
118#endif /* CONFIG_ISAPNP */
119
120#endif /* __KERNEL__ */
121#endif /* LINUX_ISAPNP_H */
122