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/*
* arch/arm/mach-ixp4xx/nas100d-pci.c
*
* NAS 100d board-level PCI initialization
*
* based on ixdp425-pci.c:
* Copyright (C) 2002 Intel Corporation.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* Maintainer: http://www.nslu2-linux.org/
*
* 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/config.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/mach/pci.h>
#include <asm/mach-types.h>
void __init nas100d_pci_preinit(void)
{
set_irq_type(IRQ_NAS100D_PCI_INTA, IRQT_LOW);
set_irq_type(IRQ_NAS100D_PCI_INTB, IRQT_LOW);
set_irq_type(IRQ_NAS100D_PCI_INTC, IRQT_LOW);
set_irq_type(IRQ_NAS100D_PCI_INTD, IRQT_LOW);
set_irq_type(IRQ_NAS100D_PCI_INTE, IRQT_LOW);
gpio_line_isr_clear(NAS100D_PCI_INTA_PIN);
gpio_line_isr_clear(NAS100D_PCI_INTB_PIN);
gpio_line_isr_clear(NAS100D_PCI_INTC_PIN);
gpio_line_isr_clear(NAS100D_PCI_INTD_PIN);
gpio_line_isr_clear(NAS100D_PCI_INTE_PIN);
ixp4xx_pci_preinit();
}
static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
if (slot < 1 || slot > 3 || pin < 1 || pin > 3)
return -1;
switch (slot)
{
case 1:
if (pin == 1)
return IRQ_NAS100D_PCI_INTA;
break;
case 2:
if (pin == 1)
return IRQ_NAS100D_PCI_INTB;
break;
case 3:
if (pin == 1)
return IRQ_NAS100D_PCI_INTC;
if (pin == 2)
return IRQ_NAS100D_PCI_INTD;
if (pin == 3)
return IRQ_NAS100D_PCI_INTE;
break;
}
return -1;
}
struct hw_pci __initdata nas100d_pci = {
.nr_controllers = 1,
.preinit = nas100d_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = nas100d_map_irq,
};
int __init nas100d_pci_init(void)
{
if (machine_is_nas100d())
pci_common_init(&nas100d_pci);
return 0;
}
subsys_initcall(nas100d_pci_init);
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