1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * ISA Plug & Play support |
4 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
5 | */ |
6 | |
7 | #ifndef LINUX_ISAPNP_H |
8 | #define LINUX_ISAPNP_H |
9 | |
10 | #include <linux/errno.h> |
11 | #include <linux/pnp.h> |
12 | |
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__ |
31 | #include <linux/mod_devicetable.h> |
32 | |
33 | #define DEVICE_COUNT_COMPATIBLE 4 |
34 | |
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 | |
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 | |
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 */ |
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 | |
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 */ |
101 | |