/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 2008  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_MACHINE_PCI_H
#define	GRUB_MACHINE_PCI_H	1

#ifndef ASM_FILE
#include <grub/types.h>
#include <grub/cpu/io.h>
#endif

#define GRUB_LOONGSON_OHCI_PCIID 0x00351033
#define GRUB_LOONGSON_EHCI_PCIID 0x00e01033

#define GRUB_MACHINE_PCI_IO_BASE_2F        0xbfd00000
#define GRUB_MACHINE_PCI_IO_BASE_3A        0xb8000000
#define GRUB_MACHINE_PCI_CONFSPACE_2F      0xbfe80000
#define GRUB_MACHINE_PCI_CONFSPACE_3A      0xba000000
#define GRUB_MACHINE_PCI_CONFSPACE_3A_EXT  0xbb000000
#define GRUB_MACHINE_PCI_CONTROLLER_HEADER 0xbfe00000

#define GRUB_MACHINE_PCI_CONF_CTRL_REG_ADDR_2F 0xbfe00118

#define GRUB_PCI_NUM_DEVICES_2F 16

#ifndef ASM_FILE

typedef enum { GRUB_BONITO_2F, GRUB_BONITO_3A } grub_bonito_type_t;
extern grub_bonito_type_t EXPORT_VAR (grub_bonito_type);

#define GRUB_PCI_NUM_DEVICES    (grub_bonito_type ? 32 \
				 : GRUB_PCI_NUM_DEVICES_2F)
#define GRUB_PCI_NUM_BUS        (grub_bonito_type ? 256 : 1)

#define GRUB_MACHINE_PCI_IO_BASE	(grub_bonito_type \
					 ? GRUB_MACHINE_PCI_IO_BASE_3A \
					 : GRUB_MACHINE_PCI_IO_BASE_2F)

#define GRUB_MACHINE_PCI_CONF_CTRL_REG_2F    (*(volatile grub_uint32_t *) \
					   GRUB_MACHINE_PCI_CONF_CTRL_REG_ADDR_2F)
#define GRUB_MACHINE_PCI_IO_CTRL_REG_2F      (*(volatile grub_uint32_t *) 0xbfe00110)
#define GRUB_MACHINE_PCI_CONF_CTRL_REG_3A    (*(volatile grub_uint32_t *) \
					      0xbfe00118)

#endif
#define GRUB_MACHINE_PCI_WIN_MASK_SIZE    6
#define GRUB_MACHINE_PCI_WIN_MASK         ((1 << GRUB_MACHINE_PCI_WIN_MASK_SIZE) - 1)

/* We have 3 PCI windows.  */
#define GRUB_MACHINE_PCI_NUM_WIN          3
/* Each window is 64MiB.  */
#define GRUB_MACHINE_PCI_WIN_SHIFT        26
#define GRUB_MACHINE_PCI_WIN_OFFSET_MASK  ((1 << GRUB_MACHINE_PCI_WIN_SHIFT) - 1)

#define GRUB_MACHINE_PCI_WIN_SIZE         0x04000000
/* Graphical acceleration takes 1 MiB away.  */
#define GRUB_MACHINE_PCI_WIN1_SIZE        0x03f00000

#define GRUB_MACHINE_PCI_WIN1_ADDR        0xb0000000
#define GRUB_MACHINE_PCI_WIN2_ADDR        0xb4000000
#define GRUB_MACHINE_PCI_WIN3_ADDR        0xb8000000

#ifndef ASM_FILE
grub_uint32_t
EXPORT_FUNC (grub_pci_read) (grub_pci_address_t addr);

grub_uint16_t
EXPORT_FUNC (grub_pci_read_word) (grub_pci_address_t addr);

grub_uint8_t
EXPORT_FUNC (grub_pci_read_byte) (grub_pci_address_t addr);

void
EXPORT_FUNC (grub_pci_write) (grub_pci_address_t addr, grub_uint32_t data);

void
EXPORT_FUNC (grub_pci_write_word) (grub_pci_address_t addr, grub_uint16_t data);

void
EXPORT_FUNC (grub_pci_write_byte) (grub_pci_address_t addr, grub_uint8_t data);

volatile void *
EXPORT_FUNC (grub_pci_device_map_range) (grub_pci_device_t dev,
					 grub_addr_t base, grub_size_t size);
void *
EXPORT_FUNC (grub_pci_device_map_range_cached) (grub_pci_device_t dev,
						grub_addr_t base,
						grub_size_t size);
void
EXPORT_FUNC (grub_pci_device_unmap_range) (grub_pci_device_t dev,
					   volatile void *mem,
					   grub_size_t size);
#endif

#endif /* GRUB_MACHINE_PCI_H */