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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2010 coresystems GmbH
*
* 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. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 _PCI_PCI_H
#define _PCI_PCI_H
/* we implement at least this version */
#define PCI_LIB_VERSION 0x020200
#include <pci.h>
#define PCI_CLASS_DEVICE REG_CLASS_DEV
#define PCI_SUBSYSTEM_VENDOR_ID REG_SUBSYS_VENDOR_ID
#define PCI_SUBSYSTEM_ID REG_SUBSYS_ID
#define PCI_COMMAND REG_COMMAND
#define PCI_COMMAND_IO REG_COMMAND_IO
#define PCI_COMMAND_MEMORY REG_COMMAND_MEM
#define PCI_COMMAND_MASTER REG_COMMAND_BM
#define PCI_HEADER_TYPE REG_HEADER_TYPE
#define PCI_HEADER_TYPE_NORMAL HEADER_TYPE_NORMAL
#define PCI_HEADER_TYPE_BRIDGE HEADER_TYPE_BRIDGE
#define PCI_HEADER_TYPE_CARDBUS HEADER_TYPE_CARDBUS
#define PCI_BASE_ADDRESS_0 0x10
#define PCI_BASE_ADDRESS_1 0x14
#define PCI_BASE_ADDRESS_2 0x18
#define PCI_BASE_ADDRESS_3 0x1c
#define PCI_BASE_ADDRESS_4 0x20
#define PCI_BASE_ADDRESS_5 0x24
#define PCI_BASE_ADDRESS_SPACE 1 // mask
#define PCI_BASE_ADDRESS_SPACE_IO 1
#define PCI_BASE_ADDRESS_SPACE_MEM 0
#define PCI_BASE_ADDRESS_IO_MASK ~0xf
#define PCI_BASE_ADDRESS_MEM_MASK ~0x3
#define PCI_ROM_ADDRESS 0x30
#define PCI_ROM_ADDRESS1 0x38 // on bridges
#define PCI_ROM_ADDRESS_MASK ~0x7ff
#define PCI_VENDOR_ID_INTEL 0x8086
struct pci_dev {
u16 domain;
u8 bus, dev, func;
u16 vendor_id, device_id;
struct pci_dev *next;
};
/*
* values to match devices against.
* "-1" means "don't care", everything else requires an exact match
*/
struct pci_filter {
int domain, bus, dev, func;
int vendor, device;
struct pci_dev *devices;
};
struct pci_access {
struct pci_dev *devices;
};
u8 pci_read_byte(struct pci_dev *dev, int pos);
u16 pci_read_word(struct pci_dev *dev, int pos);
u32 pci_read_long(struct pci_dev *dev, int pos);
int pci_write_byte(struct pci_dev *dev, int pos, u8 data);
int pci_write_word(struct pci_dev *dev, int pos, u16 data);
int pci_write_long(struct pci_dev *dev, int pos, u32 data);
struct pci_access *pci_alloc(void);
void pci_init(struct pci_access*);
void pci_cleanup(struct pci_access*);
char *pci_filter_parse_slot(struct pci_filter*, const char*);
int pci_filter_match(struct pci_filter*, struct pci_dev*);
void pci_filter_init(struct pci_access*, struct pci_filter*);
void pci_scan_bus(struct pci_access*);
struct pci_dev *pci_get_dev(struct pci_access*, u16, u8, u8, u8);
#endif
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