63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* Copyright 2010 Stefan Lankes, Chair for Operating Systems,
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* RWTH Aachen University
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of MetalSVM.
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*/
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/**
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* @author Stefan Lankes
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* @file arch/x86/include/asm/pci.h
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* @brief functions related to PCI initialization and information
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*
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* This file contains a procedure to initialize the PCI environment
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* and functions to access information about specific PCI devices.
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*/
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#ifndef __ARCH_PCI_H__
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#define __ARCH_PCI_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @brief Initialize the PCI environment
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*/
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int pci_init(void);
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/** @brief Determine the IObase address and the interrupt number of a specific device
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*
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* @param vendor_id The device's vendor ID
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* @param device_id the device's ID
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* @param iobase Pointer to a 4 byte variable where the determined IObase address will be stored
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* @param irq Pointer to a 4 byte variable where the determined IRQ number will be stored
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*
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* @return
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* - 0 on success
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* - -EINVAL (-22) on failure
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*/
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int pci_get_device_info(uint32_t vendor_id, uint32_t device_id, uint32_t* iobase, uint32_t* irq);
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/** @brief Print information of existing pci adapters
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*
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* @return 0 in any case
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*/
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int print_pci_adapters(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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