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/config.h>
26#include <linux/errno.h>
27#include <linux/pnp.h>
28
29/*
30 * Configuration registers (TODO: change by specification)
31 */
32
33#define ISAPNP_CFG_ACTIVATE 0x30 /* byte */
34#define ISAPNP_CFG_MEM 0x40 /* 4 * dword */
35#define ISAPNP_CFG_PORT 0x60 /* 8 * word */
36#define ISAPNP_CFG_IRQ 0x70 /* 2 * word */
37#define ISAPNP_CFG_DMA 0x74 /* 2 * byte */
38
39/*
40 *
41 */
42
43#define ISAPNP_VENDOR(a,b,c) (((((a)-'A'+1)&0x3f)<<2)|\
44 ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
45 ((((c)-'A'+1)&0x1f)<<8))
46#define ISAPNP_DEVICE(x) ((((x)&0xf000)>>8)|\
47 (((x)&0x0f00)>>8)|\
48 (((x)&0x00f0)<<8)|\
49 (((x)&0x000f)<<8))
50#define ISAPNP_FUNCTION(x) ISAPNP_DEVICE(x)
51
52/*
53 *
54 */
55
56#ifdef __KERNEL__
57
58#define DEVICE_COUNT_COMPATIBLE 4
59
60#define ISAPNP_ANY_ID 0xffff
61#define ISAPNP_CARD_DEVS 8
62
63#define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
64 .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
65#define ISAPNP_CARD_END \
66 .card_vendor = 0, .card_device = 0
67#define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
68 { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
69
70/* export used IDs outside module */
71#define ISAPNP_CARD_TABLE(name) \
72 MODULE_GENERIC_TABLE(isapnp_card, name)
73
74struct isapnp_card_id {
75 unsigned long driver_data; /* data private to the driver */
76 unsigned short card_vendor, card_device;
77 struct {
78 unsigned short vendor, function;
79 } devs[ISAPNP_CARD_DEVS]; /* logical devices */
80};
81
82#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
83 .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device = ISAPNP_DEVICE(_cdevice), \
84 .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
85#define ISAPNP_DEVICE_SINGLE_END \
86 .card_vendor = 0, .card_device = 0
87
88struct isapnp_device_id {
89 unsigned short card_vendor, card_device;
90 unsigned short vendor, function;
91 unsigned long driver_data; /* data private to the driver */
92};
93
94#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
95
96#define __ISAPNP__
97
98/* lowlevel configuration */
99int isapnp_present(void);
100int isapnp_cfg_begin(int csn, int device);
101int isapnp_cfg_end(void);
102unsigned char isapnp_read_byte(unsigned char idx);
103void isapnp_write_byte(unsigned char idx, unsigned char val);
104
105#ifdef CONFIG_PROC_FS
106int isapnp_proc_init(void);
107int isapnp_proc_done(void);
108#else
109static inline int isapnp_proc_init(void) { return 0; }
110static inline int isapnp_proc_done(void) { return 0; }
111#endif
112
113/* compat */
114struct pnp_card *pnp_find_card(unsigned short vendor,
115 unsigned short device,
116 struct pnp_card *from);
117struct pnp_dev *pnp_find_dev(struct pnp_card *card,
118 unsigned short vendor,
119 unsigned short function,
120 struct pnp_dev *from);
121
122#else /* !CONFIG_ISAPNP */
123
124/* lowlevel configuration */
125static inline int isapnp_present(void) { return 0; }
126static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
127static inline int isapnp_cfg_end(void) { return -ENODEV; }
128static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
129static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
130
131static inline struct pnp_card *pnp_find_card(unsigned short vendor,
132 unsigned short device,
133 struct pnp_card *from) { return NULL; }
134static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
135 unsigned short vendor,
136 unsigned short function,
137 struct pnp_dev *from) { return NULL; }
138
139#endif /* CONFIG_ISAPNP */
140
141#endif /* __KERNEL__ */
142#endif /* LINUX_ISAPNP_H */