You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.0 KiB
85 lines
2.0 KiB
20 years ago
|
/*
|
||
|
|
* arch/arm/mach-ixp4xx/ixdp425-pci.c
|
||
|
|
*
|
||
|
|
* IXDP425 board-level PCI initialization
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002 Intel Corporation.
|
||
|
|
* Copyright (C) 2003-2004 MontaVista Software, Inc.
|
||
|
|
*
|
||
|
|
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
|
||
|
|
#include <asm/mach/pci.h>
|
||
|
|
#include <asm/irq.h>
|
||
|
|
#include <asm/hardware.h>
|
||
|
|
#include <asm/mach-types.h>
|
||
|
|
|
||
|
|
void __init ixdp425_pci_preinit(void)
|
||
|
|
{
|
||
|
|
gpio_line_config(IXDP425_PCI_INTA_PIN,
|
||
|
|
IXP4XX_GPIO_IN | IXP4XX_GPIO_ACTIVE_LOW);
|
||
|
|
gpio_line_config(IXDP425_PCI_INTB_PIN,
|
||
|
|
IXP4XX_GPIO_IN | IXP4XX_GPIO_ACTIVE_LOW);
|
||
|
|
gpio_line_config(IXDP425_PCI_INTC_PIN,
|
||
|
|
IXP4XX_GPIO_IN | IXP4XX_GPIO_ACTIVE_LOW);
|
||
|
|
gpio_line_config(IXDP425_PCI_INTD_PIN,
|
||
|
|
IXP4XX_GPIO_IN | IXP4XX_GPIO_ACTIVE_LOW);
|
||
|
|
|
||
|
|
gpio_line_isr_clear(IXDP425_PCI_INTA_PIN);
|
||
|
|
gpio_line_isr_clear(IXDP425_PCI_INTB_PIN);
|
||
|
|
gpio_line_isr_clear(IXDP425_PCI_INTC_PIN);
|
||
|
|
gpio_line_isr_clear(IXDP425_PCI_INTD_PIN);
|
||
|
|
|
||
|
|
ixp4xx_pci_preinit();
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __init ixdp425_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
||
|
|
{
|
||
|
|
static int pci_irq_table[IXDP425_PCI_IRQ_LINES] = {
|
||
|
|
IRQ_IXDP425_PCI_INTA,
|
||
|
|
IRQ_IXDP425_PCI_INTB,
|
||
|
|
IRQ_IXDP425_PCI_INTC,
|
||
|
|
IRQ_IXDP425_PCI_INTD
|
||
|
|
};
|
||
|
|
|
||
|
|
int irq = -1;
|
||
|
|
|
||
|
|
if (slot >= 1 && slot <= IXDP425_PCI_MAX_DEV &&
|
||
|
|
pin >= 1 && pin <= IXDP425_PCI_IRQ_LINES) {
|
||
|
|
irq = pci_irq_table[(slot + pin - 2) % 4];
|
||
|
|
}
|
||
|
|
|
||
|
|
return irq;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct hw_pci ixdp425_pci __initdata = {
|
||
|
|
.nr_controllers = 1,
|
||
|
|
.preinit = ixdp425_pci_preinit,
|
||
|
|
.swizzle = pci_std_swizzle,
|
||
|
|
.setup = ixp4xx_setup,
|
||
|
|
.scan = ixp4xx_scan_bus,
|
||
|
|
.map_irq = ixdp425_map_irq,
|
||
|
|
};
|
||
|
|
|
||
|
|
int __init ixdp425_pci_init(void)
|
||
|
|
{
|
||
|
|
if (machine_is_ixdp425() || machine_is_ixcdp1100() ||
|
||
|
|
machine_is_avila() || machine_is_ixdp465())
|
||
|
|
pci_common_init(&ixdp425_pci);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
subsys_initcall(ixdp425_pci_init);
|
||
|
|
|