include/linux/bios32.h

   1 /*
   2  * BIOS32, PCI BIOS functions and defines
   3  * Copyright 1994, Drew Eckhardt
   4  *
   5  * For more information, please consult
   6  *
   7  * PCI BIOS Specification Revision
   8  * PCI Local Bus Specification
   9  * PCI System Design Guide
  10  *
  11  * PCI Special Interest Group
  12  * P.O. Box 14070
  13  * Portland, OR 97214
  14  * U. S. A.
  15  * Phone: 800-433-5177 / +1-503-797-4207
  16  * Fax: +1-503-234-6762
  17  *
  18  * Manuals are $25 each or $50 for all three, plus $7 shipping
  19  * within the United States, $35 abroad.
  20  */
  21
  22 #ifndef BIOS32_H
  23 #define BIOS32_H
  24
  25 /*
  26  * Error values that may be returned by the PCI bios.  Use
  27  * pcibios_strerror() to convert to a printable string.
  28  */
  29 #define PCIBIOS_SUCCESSFUL              0x00
  30 #define PCIBIOS_FUNC_NOT_SUPPORTED      0x81
  31 #define PCIBIOS_BAD_VENDOR_ID           0x83
  32 #define PCIBIOS_DEVICE_NOT_FOUND        0x86
  33 #define PCIBIOS_BAD_REGISTER_NUMBER     0x87
  34 #define PCIBIOS_SET_FAILED              0x88
  35 #define PCIBIOS_BUFFER_TOO_SMALL        0x89
  36
  37 extern int pcibios_present (void);
  38 extern unsigned long pcibios_init (unsigned long memory_start,
  39                                    unsigned long memory_end);
  40 extern unsigned long pcibios_fixup (unsigned long memory_start,
  41                                     unsigned long memory_end);
  42 extern int pcibios_find_class (unsigned int class_code, unsigned short index,
  43                                unsigned char *bus, unsigned char *dev_fn);
  44 extern int pcibios_find_device (unsigned short vendor, unsigned short dev_id,
  45                                 unsigned short index, unsigned char *bus,
  46                                 unsigned char *dev_fn);
  47 extern int pcibios_read_config_byte (unsigned char bus, unsigned char dev_fn,
  48                                      unsigned char where, unsigned char *val);
  49 extern int pcibios_read_config_word (unsigned char bus, unsigned char dev_fn,
  50                                      unsigned char where, unsigned short *val);
  51 extern int pcibios_read_config_dword (unsigned char bus, unsigned char dev_fn,
  52                                       unsigned char where, unsigned int *val);
  53 extern int pcibios_write_config_byte (unsigned char bus, unsigned char dev_fn,
  54                                       unsigned char where, unsigned char val);
  55 extern int pcibios_write_config_word (unsigned char bus, unsigned char dev_fn,
  56                                       unsigned char where, unsigned short val);
  57 extern int pcibios_write_config_dword (unsigned char bus, unsigned char dev_fn,
  58                                        unsigned char where, unsigned int val);
  59 extern const char *pcibios_strerror (int error);
  60
  61 #endif /* BIOS32_H */