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