mirror of https://gitee.com/openkylin/linux.git
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
|
|
* arch/sh/drivers/pci/ops-snapgear.c
|
|
*
|
|
* Author: David McCullough <davidm@snapgear.com>
|
|
*
|
|
* Ported to new API by Paul Mundt <lethal@linux-sh.org>
|
|
*
|
|
* Highly leveraged from pci-bigsur.c, written by Dustin McIntire.
|
|
*
|
|
* May be copied or modified under the terms of the GNU General Public
|
|
* License. See linux/COPYING for more information.
|
|
*
|
|
* PCI initialization for the SnapGear boards
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include "pci-sh4.h"
|
|
|
|
#define SNAPGEAR_PCI_IO 0x4000
|
|
#define SNAPGEAR_PCI_MEM 0xfd000000
|
|
|
|
/* PCI: default LOCAL memory window sizes (seen from PCI bus) */
|
|
#define SNAPGEAR_LSR0_SIZE (64*(1<<20)) //64MB
|
|
#define SNAPGEAR_LSR1_SIZE (64*(1<<20)) //64MB
|
|
|
|
static struct resource sh7751_io_resource = {
|
|
.name = "SH7751 IO",
|
|
.start = SNAPGEAR_PCI_IO,
|
|
.end = SNAPGEAR_PCI_IO + (64*1024) - 1, /* 64KiB I/O */
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
|
|
static struct resource sh7751_mem_resource = {
|
|
.name = "SH7751 mem",
|
|
.start = SNAPGEAR_PCI_MEM,
|
|
.end = SNAPGEAR_PCI_MEM + (64*1024*1024) - 1, /* 64MiB mem */
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
struct pci_channel board_pci_channels[] = {
|
|
{ &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
|
|
{ 0, }
|
|
};
|
|
|
|
static struct sh4_pci_address_map sh7751_pci_map = {
|
|
.window0 = {
|
|
.base = SH7751_CS2_BASE_ADDR,
|
|
.size = SNAPGEAR_LSR0_SIZE,
|
|
},
|
|
|
|
.window1 = {
|
|
.base = SH7751_CS2_BASE_ADDR,
|
|
.size = SNAPGEAR_LSR1_SIZE,
|
|
},
|
|
|
|
.flags = SH4_PCIC_NO_RESET,
|
|
};
|
|
|
|
/*
|
|
* Initialize the SnapGear 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 __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
|
|
{
|
|
int irq = -1;
|
|
|
|
switch (slot) {
|
|
case 8: /* the PCI bridge */ break;
|
|
case 11: irq = 8; break; /* USB */
|
|
case 12: irq = 11; break; /* PCMCIA */
|
|
case 13: irq = 5; break; /* eth0 */
|
|
case 14: irq = 8; break; /* eth1 */
|
|
case 15: irq = 11; break; /* safenet (unused) */
|
|
}
|
|
|
|
printk("PCI: Mapping SnapGear IRQ for slot %d, pin %c to irq %d\n",
|
|
slot, pin - 1 + 'A', irq);
|
|
|
|
return irq;
|
|
}
|
|
|
|
void __init pcibios_fixup(void)
|
|
{
|
|
/* Nothing to fixup .. */
|
|
}
|