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[linux-2.6] / include / linux / isapnp.h
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  *  Configuration registers (TODO: change by specification)
30  */ 
31
32 #define ISAPNP_CFG_ACTIVATE             0x30    /* byte */
33 #define ISAPNP_CFG_MEM                  0x40    /* 4 * dword */
34 #define ISAPNP_CFG_PORT                 0x60    /* 8 * word */
35 #define ISAPNP_CFG_IRQ                  0x70    /* 2 * word */
36 #define ISAPNP_CFG_DMA                  0x74    /* 2 * byte */
37
38 /*
39  *
40  */
41
42 #define ISAPNP_VENDOR(a,b,c)    (((((a)-'A'+1)&0x3f)<<2)|\
43                                 ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
44                                 ((((c)-'A'+1)&0x1f)<<8))
45 #define ISAPNP_DEVICE(x)        ((((x)&0xf000)>>8)|\
46                                  (((x)&0x0f00)>>8)|\
47                                  (((x)&0x00f0)<<8)|\
48                                  (((x)&0x000f)<<8))
49 #define ISAPNP_FUNCTION(x)      ISAPNP_DEVICE(x)
50
51 /*
52  *
53  */
54
55 #ifdef __KERNEL__
56
57 #define DEVICE_COUNT_COMPATIBLE 4
58
59 #define ISAPNP_ANY_ID           0xffff
60 #define ISAPNP_CARD_DEVS        8
61
62 #define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
63                 .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
64 #define ISAPNP_CARD_END \
65                 .card_vendor = 0, .card_device = 0
66 #define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
67                 { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
68
69 /* export used IDs outside module */
70 #define ISAPNP_CARD_TABLE(name) \
71                 MODULE_GENERIC_TABLE(isapnp_card, name)
72
73 struct isapnp_card_id {
74         unsigned long driver_data;      /* data private to the driver */
75         unsigned short card_vendor, card_device;
76         struct {
77                 unsigned short vendor, function;
78         } devs[ISAPNP_CARD_DEVS];       /* logical devices */
79 };
80
81 #define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
82                 .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device =  ISAPNP_DEVICE(_cdevice), \
83                 .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
84 #define ISAPNP_DEVICE_SINGLE_END \
85                 .card_vendor = 0, .card_device = 0
86
87 struct isapnp_device_id {
88         unsigned short card_vendor, card_device;
89         unsigned short vendor, function;
90         unsigned long driver_data;      /* data private to the driver */
91 };
92
93 #if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
94
95 #define __ISAPNP__
96
97 /* lowlevel configuration */
98 int isapnp_present(void);
99 int isapnp_cfg_begin(int csn, int device);
100 int isapnp_cfg_end(void);
101 unsigned char isapnp_read_byte(unsigned char idx);
102 void isapnp_write_byte(unsigned char idx, unsigned char val);
103
104 #ifdef CONFIG_PROC_FS
105 int isapnp_proc_init(void);
106 int isapnp_proc_done(void);
107 #else
108 static inline int isapnp_proc_init(void) { return 0; }
109 static inline int isapnp_proc_done(void) { return 0; }
110 #endif
111
112 /* compat */
113 struct pnp_card *pnp_find_card(unsigned short vendor,
114                                unsigned short device,
115                                struct pnp_card *from);
116 struct pnp_dev *pnp_find_dev(struct pnp_card *card,
117                              unsigned short vendor,
118                              unsigned short function,
119                              struct pnp_dev *from);
120
121 #else /* !CONFIG_ISAPNP */
122
123 /* lowlevel configuration */
124 static inline int isapnp_present(void) { return 0; }
125 static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
126 static inline int isapnp_cfg_end(void) { return -ENODEV; }
127 static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
128 static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
129
130 static inline struct pnp_card *pnp_find_card(unsigned short vendor,
131                                              unsigned short device,
132                                              struct pnp_card *from) { return NULL; }
133 static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
134                                            unsigned short vendor,
135                                            unsigned short function,
136                                            struct pnp_dev *from) { return NULL; }
137
138 #endif /* CONFIG_ISAPNP */
139
140 #endif /* __KERNEL__ */
141 #endif /* LINUX_ISAPNP_H */