pcibios.h

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

/*	$Id: pcibios.h,v 1.1 2003/05/21 10:18:25 pefo Exp $ */

/*
 * Copyright (c) 2000-2002 Opsycon AB  (www.opsycon.se)
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Opsycon AB.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
#ifndef PCIBIOS_H
#define PCIBIOS_H


/* PCI BIOS ERROR CODES */
#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

/* PCI BIOS FUNCTION PROTOTYPES */
int pcibios_find_pci_device (
	u_int16_t VendorID,
	u_int16_t DeviceID,
	u_int16_t Index,
	u_int8_t *bus,
	u_int8_t *device_fn);

int pcibios_find_pci_class_code (
	u_int32_t ClassCode,
	u_int16_t Index,
	u_int8_t *bus,
	u_int8_t *device_fn);

int pcibios_read_config_byte (
	u_int8_t bus,
	u_int8_t device_fn,
	u_int8_t where,
	u_int8_t *value);

int pcibios_read_config_word (
	u_int8_t bus,
	u_int8_t device_fn,
	u_int8_t where,
	u_int16_t *value);

int pcibios_read_config_dword (
	u_int8_t bus,
	u_int8_t device_fn,
	u_int8_t where,
	u_int32_t *value);

int pcibios_write_config_byte (
	u_int8_t bus,
	u_int8_t device_fn,
	u_int8_t where,
	u_int8_t value);

int pcibios_write_config_word (
	u_int8_t bus,
	u_int8_t device_fn,
	u_int8_t where,
	u_int16_t value);

int pcibios_write_config_dword (
	u_int8_t bus,
	u_int8_t device_fn,
	u_int8_t where,
	u_int32_t value);

#endif /* PCIBIOS_H */