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