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Viewing changes to arch/arm/mach-footbridge/cats-pci.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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arch/arm/mach-footbridge/cats-pci.c
 
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/*
 
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 * linux/arch/arm/mach-footbridge/cats-pci.c
 
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 *
 
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 * PCI bios-type initialisation for PCI machines
 
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 *
 
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 * Bits taken from various places.
 
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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 <asm/irq.h>
 
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#include <asm/mach/pci.h>
 
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#include <asm/mach-types.h>
 
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/* cats host-specific stuff */
 
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static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 };
 
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static int __init cats_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
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{
 
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        if (dev->irq >= 255)
 
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                return -1;      /* not a valid interrupt. */
 
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        if (dev->irq >= 128)
 
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                return dev->irq & 0x1f;
 
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        if (dev->irq >= 1 && dev->irq <= 4)
 
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                return irqmap_cats[dev->irq - 1];
 
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        if (dev->irq != 0)
 
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                printk("PCI: device %02x:%02x has unknown irq line %x\n",
 
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                       dev->bus->number, dev->devfn, dev->irq);
 
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        return -1;
 
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}
 
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/*
 
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 * why not the standard PCI swizzle?  does this prevent 4-port tulip
 
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 * cards being used (ie, pci-pci bridge based cards)?
 
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 */
 
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static struct hw_pci cats_pci __initdata = {
 
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        .swizzle                = NULL,
 
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        .map_irq                = cats_map_irq,
 
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        .nr_controllers         = 1,
 
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        .setup                  = dc21285_setup,
 
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        .scan                   = dc21285_scan_bus,
 
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        .preinit                = dc21285_preinit,
 
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        .postinit               = dc21285_postinit,
 
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};
 
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static int __init cats_pci_init(void)
 
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{
 
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        if (machine_is_cats())
 
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                pci_common_init(&cats_pci);
 
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        return 0;
 
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}
 
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subsys_initcall(cats_pci_init);