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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008,2009 Free Software Foundation, Inc.
*
* GRUB 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, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_CPU_PCI_H
#define GRUB_CPU_PCI_H 1
#include <grub/types.h>
#include <grub/i386/io.h>
#define GRUB_MACHINE_PCI_IO_BASE 0
#define GRUB_PCI_ADDR_REG 0xcf8
#define GRUB_PCI_DATA_REG 0xcfc
#define GRUB_PCI_NUM_BUS 256
#define GRUB_PCI_NUM_DEVICES 32
static inline grub_uint32_t
grub_pci_read (grub_pci_address_t addr)
{
grub_outl (addr, GRUB_PCI_ADDR_REG);
return grub_inl (GRUB_PCI_DATA_REG);
}
static inline grub_uint16_t
grub_pci_read_word (grub_pci_address_t addr)
{
grub_outl (addr & ~3, GRUB_PCI_ADDR_REG);
return grub_inw (GRUB_PCI_DATA_REG + (addr & 3));
}
static inline grub_uint8_t
grub_pci_read_byte (grub_pci_address_t addr)
{
grub_outl (addr & ~3, GRUB_PCI_ADDR_REG);
return grub_inb (GRUB_PCI_DATA_REG + (addr & 3));
}
static inline void
grub_pci_write (grub_pci_address_t addr, grub_uint32_t data)
{
grub_outl (addr, GRUB_PCI_ADDR_REG);
grub_outl (data, GRUB_PCI_DATA_REG);
}
static inline void
grub_pci_write_word (grub_pci_address_t addr, grub_uint16_t data)
{
grub_outl (addr & ~3, GRUB_PCI_ADDR_REG);
grub_outw (data, GRUB_PCI_DATA_REG + (addr & 3));
}
static inline void
grub_pci_write_byte (grub_pci_address_t addr, grub_uint8_t data)
{
grub_outl (addr & ~3, GRUB_PCI_ADDR_REG);
grub_outb (data, GRUB_PCI_DATA_REG + (addr & 3));
}
#ifndef GRUB_MACHINE_IEEE1275
static inline volatile void *
grub_pci_device_map_range (grub_pci_device_t dev __attribute__ ((unused)),
grub_addr_t base,
grub_size_t size __attribute__ ((unused)))
{
return (volatile void *) base;
}
static inline void
grub_pci_device_unmap_range (grub_pci_device_t dev __attribute__ ((unused)),
volatile void *mem __attribute__ ((unused)),
grub_size_t size __attribute__ ((unused)))
{
}
#else
volatile void *
grub_pci_device_map_range (grub_pci_device_t dev,
grub_addr_t base,
grub_size_t size);
void
grub_pci_device_unmap_range (grub_pci_device_t dev,
volatile void *mem,
grub_size_t size);
#endif
#endif /* GRUB_CPU_PCI_H */
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