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/*
* This file is part of the coreboot project.
*
* 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; version 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _PCI_IO_CFG_H
#define _PCI_IO_CFG_H
#include <arch/io.h>
static inline __attribute__((always_inline))
uint8_t pci_io_read_config8(pci_devfn_t dev, unsigned where)
{
unsigned addr;
#if !CONFIG_PCI_IO_CFG_EXT
addr = (dev>>4) | where;
#else
addr = (dev>>4) | (where & 0xff) | ((where & 0xf00)<<16); //seg == 0
#endif
outl(0x80000000 | (addr & ~3), 0xCF8);
return inb(0xCFC + (addr & 3));
}
static inline __attribute__((always_inline))
uint16_t pci_io_read_config16(pci_devfn_t dev, unsigned where)
{
unsigned addr;
#if !CONFIG_PCI_IO_CFG_EXT
addr = (dev>>4) | where;
#else
addr = (dev>>4) | (where & 0xff) | ((where & 0xf00)<<16);
#endif
outl(0x80000000 | (addr & ~3), 0xCF8);
return inw(0xCFC + (addr & 2));
}
static inline __attribute__((always_inline))
uint32_t pci_io_read_config32(pci_devfn_t dev, unsigned where)
{
unsigned addr;
#if !CONFIG_PCI_IO_CFG_EXT
addr = (dev>>4) | where;
#else
addr = (dev>>4) | (where & 0xff) | ((where & 0xf00)<<16);
#endif
outl(0x80000000 | (addr & ~3), 0xCF8);
return inl(0xCFC);
}
static inline __attribute__((always_inline))
void pci_io_write_config8(pci_devfn_t dev, unsigned where, uint8_t value)
{
unsigned addr;
#if !CONFIG_PCI_IO_CFG_EXT
addr = (dev>>4) | where;
#else
addr = (dev>>4) | (where & 0xff) | ((where & 0xf00)<<16);
#endif
outl(0x80000000 | (addr & ~3), 0xCF8);
outb(value, 0xCFC + (addr & 3));
}
static inline __attribute__((always_inline))
void pci_io_write_config16(pci_devfn_t dev, unsigned where, uint16_t value)
{
unsigned addr;
#if !CONFIG_PCI_IO_CFG_EXT
addr = (dev>>4) | where;
#else
addr = (dev>>4) | (where & 0xff) | ((where & 0xf00)<<16);
#endif
outl(0x80000000 | (addr & ~3), 0xCF8);
outw(value, 0xCFC + (addr & 2));
}
static inline __attribute__((always_inline))
void pci_io_write_config32(pci_devfn_t dev, unsigned where, uint32_t value)
{
unsigned addr;
#if !CONFIG_PCI_IO_CFG_EXT
addr = (dev>>4) | where;
#else
addr = (dev>>4) | (where & 0xff) | ((where & 0xf00)<<16);
#endif
outl(0x80000000 | (addr & ~3), 0xCF8);
outl(value, 0xCFC);
}
#if !CONFIG_MMCONF_SUPPORT_DEFAULT
#define pci_read_config8 pci_io_read_config8
#define pci_read_config16 pci_io_read_config16
#define pci_read_config32 pci_io_read_config32
#define pci_write_config8 pci_io_write_config8
#define pci_write_config16 pci_io_write_config16
#define pci_write_config32 pci_io_write_config32
#endif
#endif /* _PCI_IO_CFG_H */
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