68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
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/*
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*
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* Copyright (C) 2008 Advanced Micro Devices, Inc.
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* Copyright (C) 2008 coresystems GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <libpayload.h>
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#include <pci.h>
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u8 pci_read_config8(pcidev_t dev, u16 reg)
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{
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outl(dev | (reg & ~3), 0xCF8);
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return inb(0xCFC + (reg & 3));
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}
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u16 pci_read_config16(pcidev_t dev, u16 reg)
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{
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outl(dev | (reg & ~3), 0xCF8);
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return inw(0xCFC + (reg & 3));
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}
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u32 pci_read_config32(pcidev_t dev, u16 reg)
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{
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outl(dev | (reg & ~3), 0xCF8);
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return inl(0xCFC + (reg & 3));
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}
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void pci_write_config8(pcidev_t dev, u16 reg, u8 val)
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{
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outl(dev | (reg & ~3), 0xCF8);
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outb(val, 0xCFC + (reg & 3));
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}
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void pci_write_config16(pcidev_t dev, u16 reg, u16 val)
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{
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outl(dev | (reg & ~3), 0xCF8);
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outw(val, 0xCFC + (reg & 3));
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}
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void pci_write_config32(pcidev_t dev, u16 reg, u32 val)
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{
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outl(dev | (reg & ~3), 0xCF8);
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outl(val, 0xCFC + (reg & 3));
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}
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