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
  27 /*
  28  *  Configuration registers (TODO: change by specification)
  29  */
  30
  31 #define ISAPNP_CFG_ACTIVATE             0x30    /* byte */
  32 #define ISAPNP_CFG_MEM                  0x40    /* 4 * dword */
  33 #define ISAPNP_CFG_PORT                 0x60    /* 8 * word */
  34 #define ISAPNP_CFG_IRQ                  0x70    /* 2 * word */
  35 #define ISAPNP_CFG_DMA                  0x74    /* 2 * byte */
  36
  37 /*
  38  *
  39  */
  40
  41 #define ISAPNP_VENDOR(a,b,c)    (((((a)-'A'+1)&0x3f)<<2)|\
  42                                 ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
  43                                 ((((c)-'A'+1)&0x1f)<<8))
  44 #define ISAPNP_DEVICE(x)        ((((x)&0xf000)>>8)|\
  45                                  (((x)&0x0f00)>>8)|\
  46                                  (((x)&0x00f0)<<8)|\
  47                                  (((x)&0x000f)<<8))
  48 #define ISAPNP_FUNCTION(x)      ISAPNP_DEVICE(x)
  49
  50 /*
  51  *
  52  */
  53
  54 #ifdef __KERNEL__
  55
  56 #include <linux/pci.h>
  57
  58 #define ISAPNP_PORT_FLAG_16BITADDR      (1<<0)
  59 #define ISAPNP_PORT_FLAG_FIXED          (1<<1)
  60
  61 struct isapnp_port {
  62         unsigned short min;             /* min base number */
  63         unsigned short max;             /* max base number */
  64         unsigned char align;            /* align boundary */
  65         unsigned char size;             /* size of range */
  66         unsigned char flags;            /* port flags */
  67         unsigned char pad;              /* pad */
  68         struct isapnp_resources *res;   /* parent */
  69         struct isapnp_port *next;       /* next port */
  70 };
  71
  72 struct isapnp_irq {
  73         unsigned short map;             /* bitmaks for IRQ lines */
  74         unsigned char flags;            /* IRQ flags */
  75         unsigned char pad;              /* pad */
  76         struct isapnp_resources *res;   /* parent */
  77         struct isapnp_irq *next;        /* next IRQ */
  78 };
  79
  80 struct isapnp_dma {
  81         unsigned char map;              /* bitmask for DMA channels */
  82         unsigned char flags;            /* DMA flags */
  83         struct isapnp_resources *res;   /* parent */
  84         struct isapnp_dma *next;        /* next port */
  85 };
  86
  87 struct isapnp_mem {
  88         unsigned int min;               /* min base number */
  89         unsigned int max;               /* max base number */
  90         unsigned int align;             /* align boundary */
  91         unsigned int size;              /* size of range */
  92         unsigned char flags;            /* memory flags */
  93         unsigned char pad;              /* pad */
  94         struct isapnp_resources *res;   /* parent */
  95         struct isapnp_mem *next;        /* next memory resource */
  96 };
  97
  98 struct isapnp_mem32 {
  99         /* TODO */
 100         unsigned char data[17];
 101         struct isapnp_resources *res;   /* parent */
 102         struct isapnp_mem32 *next;      /* next 32-bit memory resource */
 103 };
 104
 105 #define ISAPNP_RES_PRIORITY_PREFERRED   0
 106 #define ISAPNP_RES_PRIORITY_ACCEPTABLE  1
 107 #define ISAPNP_RES_PRIORITY_FUNCTIONAL  2
 108 #define ISAPNP_RES_PRIORITY_INVALID     65535
 109
 110 struct isapnp_resources {
 111         unsigned short priority;        /* priority */
 112         unsigned short dependent;       /* dependent resources */
 113         struct isapnp_port *port;       /* first port */
 114         struct isapnp_irq *irq;         /* first IRQ */
 115         struct isapnp_dma *dma;         /* first DMA */
 116         struct isapnp_mem *mem;         /* first memory resource */
 117         struct isapnp_mem32 *mem32;     /* first 32-bit memory */
 118         struct pci_dev *dev;            /* parent */
 119         struct isapnp_resources *alt;   /* alternative resource (aka dependent resources) */
 120         struct isapnp_resources *next;  /* next resource */
 121 };
 122
 123 #if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
 124
 125 /* lowlevel configuration */
 126 int isapnp_present(void);
 127 int isapnp_cfg_begin(int csn, int device);
 128 int isapnp_cfg_end(void);
 129 unsigned char isapnp_read_byte(unsigned char idx);
 130 unsigned short isapnp_read_word(unsigned char idx);
 131 unsigned int isapnp_read_dword(unsigned char idx);
 132 void isapnp_write_byte(unsigned char idx, unsigned char val);
 133 void isapnp_write_word(unsigned char idx, unsigned short val);
 134 void isapnp_write_dword(unsigned char idx, unsigned int val);
 135 void isapnp_wake(unsigned char csn);
 136 void isapnp_device(unsigned char device);
 137 void isapnp_activate(unsigned char device);
 138 void isapnp_deactivate(unsigned char device);
 139 /* manager */
 140 struct pci_bus *isapnp_find_card(unsigned short vendor,
 141                                  unsigned short device,
 142                                  struct pci_bus *from);
 143 struct pci_dev *isapnp_find_dev(struct pci_bus *card,
 144                                 unsigned short vendor,
 145                                 unsigned short function,
 146                                 struct pci_dev *from);
 147 /* misc */
 148 void isapnp_resource_change(struct resource *resource,
 149                             unsigned long start,
 150                             unsigned long size);
 151 /* init/main.c */
 152 int isapnp_init(void);
 153
 154 #else /* !CONFIG_ISAPNP */
 155
 156 /* lowlevel configuration */
 157 extern inline int isapnp_present(void) { return 0; }
 158 extern inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
 159 extern inline int isapnp_cfg_end(void) { return -ENODEV; }
 160 extern inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
 161 extern inline unsigned short isapnp_read_word(unsigned char idx) { return 0xffff; }
 162 extern inline unsigned int isapnp_read_dword(unsigned char idx) { return 0xffffffff; }
 163 extern inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
 164 extern inline void isapnp_write_word(unsigned char idx, unsigned short val) { ; }
 165 extern inline void isapnp_write_dword(unsigned char idx, unsigned int val) { ; }
 166 extern void isapnp_wake(unsigned char csn) { ; }
 167 extern void isapnp_device(unsigned char device) { ; }
 168 extern void isapnp_activate(unsigned char device) { ; }
 169 extern void isapnp_deactivate(unsigned char device) { ; }
 170 /* manager */
 171 extern struct pci_bus *isapnp_find_card(unsigned short vendor,
 172                                         unsigned short device,
 173                                         struct pci_bus *from) { return NULL; }
 174 extern struct pci_dev *isapnp_find_dev(struct pci_bus *card,
 175                                        unsigned short vendor,
 176                                        unsigned short function,
 177                                        struct pci_dev *from) { return NULL; }
 178 extern void isapnp_resource_change(struct resource *resource,
 179                                    unsigned long start,
 180                                    unsigned long size) { ; }
 181
 182 #endif /* CONFIG_ISAPNP */
 183
 184 #endif /* __KERNEL__ */
 185 #endif /* LINUX_ISAPNP_H */