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
  74 struct 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
  88 struct 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 */
  99 int isapnp_present(void);
 100 int isapnp_cfg_begin(int csn, int device);
 101 int isapnp_cfg_end(void);
 102 unsigned char isapnp_read_byte(unsigned char idx);
 103 void isapnp_write_byte(unsigned char idx, unsigned char val);
 104
 105 #ifdef CONFIG_PROC_FS
 106 int isapnp_proc_init(void);
 107 int isapnp_proc_done(void);
 108 #else
 109 static inline int isapnp_proc_init(void) { return 0; }
 110 static inline int isapnp_proc_done(void) { return 0; }
 111 #endif
 112
 113 /* compat */
 114 struct pnp_card *pnp_find_card(unsigned short vendor,
 115                                unsigned short device,
 116                                struct pnp_card *from);
 117 struct pnp_dev *pnp_find_dev(struct pnp_card *card,
 118                              unsigned short vendor,
 119                              unsigned short function,
 120                              struct pnp_dev *from);
 121
 122 #else /* !CONFIG_ISAPNP */
 123
 124 /* lowlevel configuration */
 125 static inline int isapnp_present(void) { return 0; }
 126 static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
 127 static inline int isapnp_cfg_end(void) { return -ENODEV; }
 128 static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
 129 static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
 130
 131 static inline struct pnp_card *pnp_find_card(unsigned short vendor,
 132                                              unsigned short device,
 133                                              struct pnp_card *from) { return NULL; }
 134 static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
 135                                            unsigned short vendor,
 136                                            unsigned short function,
 137                                            struct pnp_dev *from) { return NULL; }
 138
 139 #endif /* CONFIG_ISAPNP */
 140
 141 #endif /* __KERNEL__ */
 142 #endif /* LINUX_ISAPNP_H */