LXR linux/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/config.h>
  26#include <linux/errno.h>
  27#include <linux/pnp.h>
  28
  29/*
  30 *  Configuration registers (TODO: change by specification)
  31 */ 
  32
  33#define ISAPNP_CFG_ACTIVATE             0x30    /* byte */
  34#define ISAPNP_CFG_MEM                  0x40    /* 4 * dword */
  35#define ISAPNP_CFG_PORT                 0x60    /* 8 * word */
  36#define ISAPNP_CFG_IRQ                  0x70    /* 2 * word */
  37#define ISAPNP_CFG_DMA                  0x74    /* 2 * byte */
  38
  39/*
  40 *
  41 */
  42
  43#define ISAPNP_VENDOR(a,b,c)    (((((a)-'A'+1)&0x3f)<<2)|\
  44                                ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
  45                                ((((c)-'A'+1)&0x1f)<<8))
  46#define ISAPNP_DEVICE(x)        ((((x)&0xf000)>>8)|\
  47                                 (((x)&0x0f00)>>8)|\
  48                                 (((x)&0x00f0)<<8)|\
  49                                 (((x)&0x000f)<<8))
  50#define ISAPNP_FUNCTION(x)      ISAPNP_DEVICE(x)
  51
  52/*
  53 *
  54 */
  55
  56#ifdef __KERNEL__
  57
  58#define DEVICE_COUNT_COMPATIBLE 4
  59
  60#define ISAPNP_ANY_ID           0xffff
  61#define ISAPNP_CARD_DEVS        8
  62
  63#define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
  64                .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
  65#define ISAPNP_CARD_END \
  66                .card_vendor = 0, .card_device = 0
  67#define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
  68                { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
  69
  70/* export used IDs outside module */
  71#define ISAPNP_CARD_TABLE(name) \
  72                MODULE_GENERIC_TABLE(isapnp_card, name)
  73
  74struct isapnp_card_id {
  75        unsigned long driver_data;      /* data private to the driver */
  76        unsigned short card_vendor, card_device;
  77        struct {
  78                unsigned short vendor, function;
  79        } devs[ISAPNP_CARD_DEVS];       /* logical devices */
  80};
  81
  82#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
  83                .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device =  ISAPNP_DEVICE(_cdevice), \
  84                .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
  85#define ISAPNP_DEVICE_SINGLE_END \
  86                .card_vendor = 0, .card_device = 0
  87
  88struct isapnp_device_id {
  89        unsigned short card_vendor, card_device;
  90        unsigned short vendor, function;
  91        unsigned long driver_data;      /* data private to the driver */
  92};
  93
  94#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
  95
  96#define __ISAPNP__
  97
  98/* lowlevel configuration */
  99int isapnp_present(void);
 100int isapnp_cfg_begin(int csn, int device);
 101int isapnp_cfg_end(void);
 102unsigned char isapnp_read_byte(unsigned char idx);
 103unsigned short isapnp_read_word(unsigned char idx);
 104unsigned int isapnp_read_dword(unsigned char idx);
 105void isapnp_write_byte(unsigned char idx, unsigned char val);
 106void isapnp_write_word(unsigned char idx, unsigned short val);
 107void isapnp_write_dword(unsigned char idx, unsigned int val);
 108void isapnp_wake(unsigned char csn);
 109void isapnp_device(unsigned char device);
 110void isapnp_activate(unsigned char device);
 111void isapnp_deactivate(unsigned char device);
 112void *isapnp_alloc(long size);
 113
 114#ifdef CONFIG_PROC_FS
 115int isapnp_proc_init(void);
 116int isapnp_proc_done(void);
 117#else
 118static inline int isapnp_proc_init(void) { return 0; }
 119static inline int isapnp_proc_done(void) { return 0; }
 120#endif
 121
 122/* init/main.c */
 123int isapnp_init(void);
 124
 125/* compat */
 126struct pnp_card *pnp_find_card(unsigned short vendor,
 127                               unsigned short device,
 128                               struct pnp_card *from);
 129struct pnp_dev *pnp_find_dev(struct pnp_card *card,
 130                             unsigned short vendor,
 131                             unsigned short function,
 132                             struct pnp_dev *from);
 133
 134#else /* !CONFIG_ISAPNP */
 135
 136/* lowlevel configuration */
 137static inline int isapnp_present(void) { return 0; }
 138static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
 139static inline int isapnp_cfg_end(void) { return -ENODEV; }
 140static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
 141static inline unsigned short isapnp_read_word(unsigned char idx) { return 0xffff; }
 142static inline unsigned int isapnp_read_dword(unsigned char idx) { return 0xffffffff; }
 143static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
 144static inline void isapnp_write_word(unsigned char idx, unsigned short val) { ; }
 145static inline void isapnp_write_dword(unsigned char idx, unsigned int val) { ; }
 146static inline void isapnp_wake(unsigned char csn) { ; }
 147static inline void isapnp_device(unsigned char device) { ; }
 148static inline void isapnp_activate(unsigned char device) { ; }
 149static inline void isapnp_deactivate(unsigned char device) { ; }
 150
 151static inline struct pnp_card *pnp_find_card(unsigned short vendor,
 152                                             unsigned short device,
 153                                             struct pnp_card *from) { return NULL; }
 154static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
 155                                           unsigned short vendor,
 156                                           unsigned short function,
 157                                           struct pnp_dev *from) { return NULL; }
 158
 159#endif /* CONFIG_ISAPNP */
 160
 161#endif /* __KERNEL__ */
 162#endif /* LINUX_ISAPNP_H */
 163