eduOS/arch/x86/include/asm/pci.h
2014-12-09 22:32:59 +01:00

76 lines
2.6 KiB
C

/*
* Copyright (c) 2010, Stefan Lankes, RWTH Aachen University
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 REGENTS 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.
*/
/**
* @author Stefan Lankes
* @file arch/x86/include/asm/pci.h
* @brief functions related to PCI initialization and information
*
* This file contains a procedure to initialize the PCI environment
* and functions to access information about specific PCI devices.
*/
#ifndef __ARCH_PCI_H__
#define __ARCH_PCI_H__
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
uint32_t base[6];
uint32_t size[6];
uint32_t irq;
} pci_info_t;
/** @brief Initialize the PCI environment
*/
int pci_init(void);
/** @brief Determine the IObase address and the interrupt number of a specific device
*
* @param vendor_id The device's vendor ID
* @param device_id the device's ID
* @param info Pointer to the record pci_info_t where among other the IObase address will be stored
*
* @return
* - 0 on success
* - -EINVAL (-22) on failure
*/
int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, pci_info_t* info);
/** @brief Print information of existing pci adapters
*
* @return 0 in any case
*/
int print_pci_adapters(void);
#ifdef __cplusplus
}
#endif
#endif