forked from Minki/linux
daeb4c0c3b
Most PCI implementations use the standard PCI swizzle function, which handles the well defined behaviour of PCI-to-PCI bridges which can be found on cards (eg, four port ethernet cards.) Rather than having almost every platform specify the standard swizzle function, make this the default when no swizzle function is supplied. Therefore, a swizzle function only needs to be provided when there is something exceptional which needs to be handled. This gets rid of the swizzle initializer from 47 files, and leaves us with just two platforms specifying a swizzle function: ARM Integrator and Chalice CATS. Acked-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/*
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* arch/arm/mach-ixp4xx/coyote-pci.c
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*
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* PCI setup routines for ADI Engineering Coyote platform
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*
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* Copyright (C) 2002 Jungo Software Technologies.
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* Copyright (C) 2003 MontaVista Softwrae, Inc.
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*
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* Maintainer: Deepak Saxena <dsaxena@mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <asm/mach/pci.h>
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#define SLOT0_DEVID 14
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#define SLOT1_DEVID 15
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/* PCI controller GPIO to IRQ pin mappings */
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#define SLOT0_INTA 6
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#define SLOT1_INTA 11
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void __init coyote_pci_preinit(void)
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{
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irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
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ixp4xx_pci_preinit();
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}
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static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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if (slot == SLOT0_DEVID)
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return IXP4XX_GPIO_IRQ(SLOT0_INTA);
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else if (slot == SLOT1_DEVID)
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return IXP4XX_GPIO_IRQ(SLOT1_INTA);
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else return -1;
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}
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struct hw_pci coyote_pci __initdata = {
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.nr_controllers = 1,
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.preinit = coyote_pci_preinit,
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.setup = ixp4xx_setup,
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.scan = ixp4xx_scan_bus,
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.map_irq = coyote_map_irq,
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};
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int __init coyote_pci_init(void)
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{
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if (machine_is_adi_coyote())
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pci_common_init(&coyote_pci);
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return 0;
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}
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subsys_initcall(coyote_pci_init);
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