1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ISA Plug & Play support
4*4882a593Smuzhiyun * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #ifndef LINUX_ISAPNP_H
8*4882a593Smuzhiyun #define LINUX_ISAPNP_H
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/errno.h>
11*4882a593Smuzhiyun #include <linux/pnp.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun /*
14*4882a593Smuzhiyun *
15*4882a593Smuzhiyun */
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #define ISAPNP_VENDOR(a,b,c) (((((a)-'A'+1)&0x3f)<<2)|\
18*4882a593Smuzhiyun ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
19*4882a593Smuzhiyun ((((c)-'A'+1)&0x1f)<<8))
20*4882a593Smuzhiyun #define ISAPNP_DEVICE(x) ((((x)&0xf000)>>8)|\
21*4882a593Smuzhiyun (((x)&0x0f00)>>8)|\
22*4882a593Smuzhiyun (((x)&0x00f0)<<8)|\
23*4882a593Smuzhiyun (((x)&0x000f)<<8))
24*4882a593Smuzhiyun #define ISAPNP_FUNCTION(x) ISAPNP_DEVICE(x)
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun /*
27*4882a593Smuzhiyun *
28*4882a593Smuzhiyun */
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #ifdef __KERNEL__
31*4882a593Smuzhiyun #include <linux/mod_devicetable.h>
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #define DEVICE_COUNT_COMPATIBLE 4
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define ISAPNP_CARD_DEVS 8
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun #define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
38*4882a593Smuzhiyun .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
39*4882a593Smuzhiyun #define ISAPNP_CARD_END \
40*4882a593Smuzhiyun .card_vendor = 0, .card_device = 0
41*4882a593Smuzhiyun #define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
42*4882a593Smuzhiyun { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun struct isapnp_card_id {
45*4882a593Smuzhiyun unsigned long driver_data; /* data private to the driver */
46*4882a593Smuzhiyun unsigned short card_vendor, card_device;
47*4882a593Smuzhiyun struct {
48*4882a593Smuzhiyun unsigned short vendor, function;
49*4882a593Smuzhiyun } devs[ISAPNP_CARD_DEVS]; /* logical devices */
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun #define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
53*4882a593Smuzhiyun .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device = ISAPNP_DEVICE(_cdevice), \
54*4882a593Smuzhiyun .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
55*4882a593Smuzhiyun #define ISAPNP_DEVICE_SINGLE_END \
56*4882a593Smuzhiyun .card_vendor = 0, .card_device = 0
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun #if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun #define __ISAPNP__
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun /* lowlevel configuration */
63*4882a593Smuzhiyun int isapnp_present(void);
64*4882a593Smuzhiyun int isapnp_cfg_begin(int csn, int device);
65*4882a593Smuzhiyun int isapnp_cfg_end(void);
66*4882a593Smuzhiyun unsigned char isapnp_read_byte(unsigned char idx);
67*4882a593Smuzhiyun void isapnp_write_byte(unsigned char idx, unsigned char val);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun #ifdef CONFIG_PROC_FS
70*4882a593Smuzhiyun int isapnp_proc_init(void);
71*4882a593Smuzhiyun int isapnp_proc_done(void);
72*4882a593Smuzhiyun #else
isapnp_proc_init(void)73*4882a593Smuzhiyun static inline int isapnp_proc_init(void) { return 0; }
isapnp_proc_done(void)74*4882a593Smuzhiyun static inline int isapnp_proc_done(void) { return 0; }
75*4882a593Smuzhiyun #endif
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun /* compat */
78*4882a593Smuzhiyun struct pnp_dev *pnp_find_dev(struct pnp_card *card,
79*4882a593Smuzhiyun unsigned short vendor,
80*4882a593Smuzhiyun unsigned short function,
81*4882a593Smuzhiyun struct pnp_dev *from);
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun #else /* !CONFIG_ISAPNP */
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun /* lowlevel configuration */
isapnp_present(void)86*4882a593Smuzhiyun static inline int isapnp_present(void) { return 0; }
isapnp_cfg_begin(int csn,int device)87*4882a593Smuzhiyun static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
isapnp_cfg_end(void)88*4882a593Smuzhiyun static inline int isapnp_cfg_end(void) { return -ENODEV; }
isapnp_read_byte(unsigned char idx)89*4882a593Smuzhiyun static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
isapnp_write_byte(unsigned char idx,unsigned char val)90*4882a593Smuzhiyun static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
91*4882a593Smuzhiyun
pnp_find_dev(struct pnp_card * card,unsigned short vendor,unsigned short function,struct pnp_dev * from)92*4882a593Smuzhiyun static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
93*4882a593Smuzhiyun unsigned short vendor,
94*4882a593Smuzhiyun unsigned short function,
95*4882a593Smuzhiyun struct pnp_dev *from) { return NULL; }
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun #endif /* CONFIG_ISAPNP */
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun #endif /* __KERNEL__ */
100*4882a593Smuzhiyun #endif /* LINUX_ISAPNP_H */
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