21 lines
656 B
C
21 lines
656 B
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-12-28 lizhirui first version
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*/
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#include <rtthread.h>
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#include <pci.h>
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rt_uint64_t pci_get_device_map_addr(rt_uint64_t bus,rt_uint64_t device,rt_uint64_t function,rt_uint32_t index)
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{
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rt_uint64_t device_addr = 0xFE00000000 | (bus << 16) | ((device & 0x1f) << 11) | ((function & 0x07) << 8);
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struct pci_header *p = (struct pci_header *)(0x9000000000000000UL | device_addr);
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return 0x9000000000000000UL | ((rt_uint64_t)(p -> BaseAddressRegister[index] & 0xFFFFFFF0));
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}
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