1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
|
|
* linux/arch/sh/kernel/pci-bigsur.c
|
|
*
|
|
* By Dustin McIntire (dustin@sensoria.com) (c)2001
|
|
*
|
|
* Ported to new API by Paul Mundt <lethal@linux-sh.org>.
|
|
*
|
|
* May be copied or modified under the terms of the GNU General Public
|
|
* License. See linux/COPYING for more information.
|
|
*
|
|
* PCI initialization for the Hitachi Big Sur Evaluation Board
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <asm/io.h>
|
|
#include "pci-sh7751.h"
|
|
#include <asm/bigsur/bigsur.h>
|
|
|
|
#define BIGSUR_PCI_IO 0x4000
|
|
#define BIGSUR_PCI_MEM 0xfd000000
|
|
|
|
static struct resource sh7751_io_resource = {
|
|
.name = "SH7751 IO",
|
|
.start = BIGSUR_PCI_IO,
|
|
.end = BIGSUR_PCI_IO + (64*1024) - 1,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
|
|
static struct resource sh7751_mem_resource = {
|
|
.name = "SH7751 mem",
|
|
.start = BIGSUR_PCI_MEM,
|
|
.end = BIGSUR_PCI_MEM + (64*1024*1024) - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
extern struct pci_ops sh7751_pci_ops;
|
|
|
|
struct pci_channel board_pci_channels[] = {
|
|
{ &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
|
|
{ 0, }
|
|
};
|
|
|
|
static struct sh7751_pci_address_map sh7751_pci_map = {
|
|
.window0 = {
|
|
.base = SH7751_CS3_BASE_ADDR,
|
|
.size = BIGSUR_LSR0_SIZE,
|
|
},
|
|
|
|
.window1 = {
|
|
.base = SH7751_CS3_BASE_ADDR,
|
|
.size = BIGSUR_LSR1_SIZE,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* Initialize the Big Sur PCI interface
|
|
* Setup hardware to be Central Funtion
|
|
* Copy the BSR regs to the PCI interface
|
|
* Setup PCI windows into local RAM
|
|
*/
|
|
int __init pcibios_init_platform(void)
|
|
{
|
|
return sh7751_pcic_init(&sh7751_pci_map);
|
|
}
|
|
|
|
int pcibios_map_platform_irq(u8 slot, u8 pin)
|
|
{
|
|
/*
|
|
* The Big Sur can be used in a CPCI chassis, but the SH7751 PCI
|
|
* interface is on the wrong end of the board so that it can also
|
|
* support a V320 CPI interface chip... Therefor the IRQ mapping is
|
|
* somewhat use dependent... I'l assume a linear map for now, i.e.
|
|
* INTA=slot0,pin0... INTD=slot3,pin0...
|
|
*/
|
|
int irq = (slot + pin-1) % 4 + BIGSUR_SH7751_PCI_IRQ_BASE;
|
|
|
|
PCIDBG(2, "PCI: Mapping Big Sur IRQ for slot %d, pin %c to irq %d\n",
|
|
slot, pin-1+'A', irq);
|
|
|
|
return irq;
|
|
}
|
|
|