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/*
* 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);
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