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74ba9207 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * ISA Plug & Play support | |
4 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
1da177e4 LT |
5 | */ |
6 | ||
7 | #ifndef LINUX_ISAPNP_H | |
8 | #define LINUX_ISAPNP_H | |
9 | ||
1da177e4 LT |
10 | #include <linux/errno.h> |
11 | #include <linux/pnp.h> | |
12 | ||
1da177e4 LT |
13 | /* |
14 | * | |
15 | */ | |
16 | ||
17 | #define ISAPNP_VENDOR(a,b,c) (((((a)-'A'+1)&0x3f)<<2)|\ | |
18 | ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\ | |
19 | ((((c)-'A'+1)&0x1f)<<8)) | |
20 | #define ISAPNP_DEVICE(x) ((((x)&0xf000)>>8)|\ | |
21 | (((x)&0x0f00)>>8)|\ | |
22 | (((x)&0x00f0)<<8)|\ | |
23 | (((x)&0x000f)<<8)) | |
24 | #define ISAPNP_FUNCTION(x) ISAPNP_DEVICE(x) | |
25 | ||
26 | /* | |
27 | * | |
28 | */ | |
29 | ||
30 | #ifdef __KERNEL__ | |
90def62d | 31 | #include <linux/mod_devicetable.h> |
1da177e4 LT |
32 | |
33 | #define DEVICE_COUNT_COMPATIBLE 4 | |
34 | ||
1da177e4 LT |
35 | #define ISAPNP_CARD_DEVS 8 |
36 | ||
37 | #define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \ | |
38 | .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device) | |
39 | #define ISAPNP_CARD_END \ | |
40 | .card_vendor = 0, .card_device = 0 | |
41 | #define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \ | |
42 | { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) } | |
43 | ||
1da177e4 LT |
44 | struct isapnp_card_id { |
45 | unsigned long driver_data; /* data private to the driver */ | |
46 | unsigned short card_vendor, card_device; | |
47 | struct { | |
48 | unsigned short vendor, function; | |
49 | } devs[ISAPNP_CARD_DEVS]; /* logical devices */ | |
50 | }; | |
51 | ||
52 | #define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \ | |
53 | .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device = ISAPNP_DEVICE(_cdevice), \ | |
54 | .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction) | |
55 | #define ISAPNP_DEVICE_SINGLE_END \ | |
56 | .card_vendor = 0, .card_device = 0 | |
57 | ||
1da177e4 LT |
58 | #if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE)) |
59 | ||
60 | #define __ISAPNP__ | |
61 | ||
62 | /* lowlevel configuration */ | |
63 | int isapnp_present(void); | |
64 | int isapnp_cfg_begin(int csn, int device); | |
65 | int isapnp_cfg_end(void); | |
66 | unsigned char isapnp_read_byte(unsigned char idx); | |
67 | void isapnp_write_byte(unsigned char idx, unsigned char val); | |
68 | ||
69 | #ifdef CONFIG_PROC_FS | |
70 | int isapnp_proc_init(void); | |
71 | int isapnp_proc_done(void); | |
72 | #else | |
73 | static inline int isapnp_proc_init(void) { return 0; } | |
74 | static inline int isapnp_proc_done(void) { return 0; } | |
75 | #endif | |
76 | ||
77 | /* compat */ | |
1da177e4 LT |
78 | struct pnp_dev *pnp_find_dev(struct pnp_card *card, |
79 | unsigned short vendor, | |
80 | unsigned short function, | |
81 | struct pnp_dev *from); | |
82 | ||
83 | #else /* !CONFIG_ISAPNP */ | |
84 | ||
85 | /* lowlevel configuration */ | |
86 | static inline int isapnp_present(void) { return 0; } | |
87 | static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; } | |
88 | static inline int isapnp_cfg_end(void) { return -ENODEV; } | |
89 | static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; } | |
90 | static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; } | |
91 | ||
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92 | static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card, |
93 | unsigned short vendor, | |
94 | unsigned short function, | |
95 | struct pnp_dev *from) { return NULL; } | |
96 | ||
97 | #endif /* CONFIG_ISAPNP */ | |
98 | ||
99 | #endif /* __KERNEL__ */ | |
100 | #endif /* LINUX_ISAPNP_H */ |