mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 17:24:17 +08:00
3a63913f60
Signed-off-by: Zhang Le <r0bertz@gentoo.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
/*
|
|
* pci.c
|
|
*
|
|
* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
|
|
* Author: Fuxin Zhang, zhangfx@lemote.com
|
|
*
|
|
* 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; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* 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.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <asm/mips-boards/bonito64.h>
|
|
#include <asm/mach-lemote/pci.h>
|
|
|
|
extern struct pci_ops bonito64_pci_ops;
|
|
|
|
static struct resource loongson2e_pci_mem_resource = {
|
|
.name = "LOONGSON2E PCI MEM",
|
|
.start = LOONGSON2E_PCI_MEM_START,
|
|
.end = LOONGSON2E_PCI_MEM_END,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct resource loongson2e_pci_io_resource = {
|
|
.name = "LOONGSON2E PCI IO MEM",
|
|
.start = LOONGSON2E_PCI_IO_START,
|
|
.end = IO_SPACE_LIMIT,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
|
|
static struct pci_controller loongson2e_pci_controller = {
|
|
.pci_ops = &bonito64_pci_ops,
|
|
.io_resource = &loongson2e_pci_io_resource,
|
|
.mem_resource = &loongson2e_pci_mem_resource,
|
|
.mem_offset = 0x00000000UL,
|
|
.io_offset = 0x00000000UL,
|
|
};
|
|
|
|
static void __init ict_pcimap(void)
|
|
{
|
|
/*
|
|
* local to PCI mapping: [256M,512M] -> [256M,512M]; differ from PMON
|
|
*
|
|
* CPU address space [256M,448M] is window for accessing pci space
|
|
* we set pcimap_lo[0,1,2] to map it to pci space [256M,448M]
|
|
* pcimap: bit18,pcimap_2; bit[17-12],lo2;bit[11-6],lo1;bit[5-0],lo0
|
|
*/
|
|
/* 1,00 0110 ,0001 01,00 0000 */
|
|
BONITO_PCIMAP = 0x46140;
|
|
|
|
/* 1, 00 0010, 0000,01, 00 0000 */
|
|
/* BONITO_PCIMAP = 0x42040; */
|
|
|
|
/*
|
|
* PCI to local mapping: [2G,2G+256M] -> [0,256M]
|
|
*/
|
|
BONITO_PCIBASE0 = 0x80000000;
|
|
BONITO_PCIBASE1 = 0x00800000;
|
|
BONITO_PCIBASE2 = 0x90000000;
|
|
|
|
}
|
|
|
|
static int __init pcibios_init(void)
|
|
{
|
|
ict_pcimap();
|
|
|
|
loongson2e_pci_controller.io_map_base =
|
|
(unsigned long) ioremap(LOONGSON2E_IO_PORT_BASE,
|
|
loongson2e_pci_io_resource.end -
|
|
loongson2e_pci_io_resource.start + 1);
|
|
|
|
register_pci_controller(&loongson2e_pci_controller);
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(pcibios_init);
|