/*
 * BIOS32, PCI BIOS functions and defines
 * Copyright 1994, Drew Eckhardt
 * 
 * For more information, please consult 
 * 
 * PCI BIOS Specification Revision
 * PCI Local Bus Specification
 * PCI System Design Guide
 *
 * PCI Special Interest Group
 * P.O. Box 14070
 * Portland, OR 97214
 * U. S. A.
 * Phone: 800-433-5177 / +1-503-797-4207
 * Fax: +1-503-234-6762 
 * 
 * Manuals are $25 each or $50 for all three, plus $7 shipping 
 * within the United States, $35 abroad.
 */

#ifndef BIOS32_H
#define BIOS32_H

/*
 * Error values that may be returned by the PCI bios.  Use
 * pcibios_strerror() to convert to a printable string.
 */
#define PCIBIOS_SUCCESSFUL		0x00
#define PCIBIOS_FUNC_NOT_SUPPORTED	0x81
#define PCIBIOS_BAD_VENDOR_ID		0x83
#define PCIBIOS_DEVICE_NOT_FOUND	0x86
#define PCIBIOS_BAD_REGISTER_NUMBER	0x87
#define PCIBIOS_SET_FAILED		0x88
#define PCIBIOS_BUFFER_TOO_SMALL	0x89

extern int pcibios_present (void);
extern unsigned long pcibios_init (unsigned long memory_start,
				   unsigned long memory_end);
extern unsigned long pcibios_fixup (unsigned long memory_start,
				    unsigned long memory_end);
extern int pcibios_find_class (unsigned int class_code, unsigned short index, 
			       unsigned char *bus, unsigned char *dev_fn);
extern int pcibios_find_device (unsigned short vendor, unsigned short dev_id,
				unsigned short index, unsigned char *bus,
				unsigned char *dev_fn);
extern int pcibios_read_config_byte (unsigned char bus, unsigned char dev_fn,
				     unsigned char where, unsigned char *val);
extern int pcibios_read_config_word (unsigned char bus, unsigned char dev_fn,
				     unsigned char where, unsigned short *val);
extern int pcibios_read_config_dword (unsigned char bus, unsigned char dev_fn,
				      unsigned char where, unsigned int *val);
extern int pcibios_write_config_byte (unsigned char bus, unsigned char dev_fn,
				      unsigned char where, unsigned char val);
extern int pcibios_write_config_word (unsigned char bus, unsigned char dev_fn,
				      unsigned char where, unsigned short val);
extern pcibios_write_config_dword (unsigned char bus, unsigned char dev_fn,
				   unsigned char where, unsigned int val);
extern const char *pcibios_strerror (int error);

#endif /* BIOS32_H */
