f7e8bbb820
Patch from Deepak Saxena Other than interrupt masking purposes, this API is only used when configuring interrupt lines and this patch moves that functionality directly into the ixp4xx_set_irq_type() implementation as board level PCI code should not need to worry about those details. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
|
|
* arch/arm/mach-ixp4xx/nslu2-pci.c
|
|
*
|
|
* NSLU2 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 nslu2_pci_preinit(void)
|
|
{
|
|
set_irq_type(IRQ_NSLU2_PCI_INTA, IRQT_LOW);
|
|
set_irq_type(IRQ_NSLU2_PCI_INTB, IRQT_LOW);
|
|
set_irq_type(IRQ_NSLU2_PCI_INTC, IRQT_LOW);
|
|
|
|
ixp4xx_pci_preinit();
|
|
}
|
|
|
|
static int __init nslu2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
static int pci_irq_table[NSLU2_PCI_IRQ_LINES] = {
|
|
IRQ_NSLU2_PCI_INTA,
|
|
IRQ_NSLU2_PCI_INTB,
|
|
IRQ_NSLU2_PCI_INTC,
|
|
};
|
|
|
|
int irq = -1;
|
|
|
|
if (slot >= 1 && slot <= NSLU2_PCI_MAX_DEV &&
|
|
pin >= 1 && pin <= NSLU2_PCI_IRQ_LINES) {
|
|
irq = pci_irq_table[(slot + pin - 2) % NSLU2_PCI_IRQ_LINES];
|
|
}
|
|
|
|
return irq;
|
|
}
|
|
|
|
struct hw_pci __initdata nslu2_pci = {
|
|
.nr_controllers = 1,
|
|
.preinit = nslu2_pci_preinit,
|
|
.swizzle = pci_std_swizzle,
|
|
.setup = ixp4xx_setup,
|
|
.scan = ixp4xx_scan_bus,
|
|
.map_irq = nslu2_map_irq,
|
|
};
|
|
|
|
int __init nslu2_pci_init(void) /* monkey see, monkey do */
|
|
{
|
|
if (machine_is_nslu2())
|
|
pci_common_init(&nslu2_pci);
|
|
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(nslu2_pci_init);
|