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/* $Id: pciutil.h $ */
/** @file
* Utility routines for calling the PCI BIOS.
*/
/*
* Copyright (C) 2011-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#ifndef VBOX_INCLUDED_SRC_PC_BIOS_pciutil_h
#define VBOX_INCLUDED_SRC_PC_BIOS_pciutil_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
extern uint16_t pci_find_device(uint16_t v_id, uint16_t d_id);
/* Warning: pci_find_classcode destroys the high bits of ECX. */
extern uint16_t pci_find_classcode(uint32_t dev_class);
extern uint32_t pci_read_config_byte(uint8_t bus, uint8_t dev_fn, uint8_t reg);
extern uint32_t pci_read_config_word(uint8_t bus, uint8_t dev_fn, uint8_t reg);
/* Warning: pci_read_config_dword destroys the high bits of ECX. */
extern uint32_t pci_read_config_dword(uint8_t bus, uint8_t dev_fn, uint8_t reg);
extern void pci_write_config_byte(uint8_t bus, uint8_t dev_fn, uint8_t reg, uint8_t val);
extern void pci_write_config_word(uint8_t bus, uint8_t dev_fn, uint8_t reg, uint16_t val);
/* Warning: pci_write_config_dword destroys the high bits of ECX. */
extern void pci_write_config_dword(uint8_t bus, uint8_t dev_fn, uint8_t reg, uint32_t val);
extern uint16_t pci_find_class_noif(uint16_t dev_class);
#endif /* !VBOX_INCLUDED_SRC_PC_BIOS_pciutil_h */
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