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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/arm/mach-footbridge/ebsa285-pci.c
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// SPDX-License-Identifier: GPL-2.0

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/*

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 * linux/arch/arm/mach-footbridge/ebsa285-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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static int irqmap_ebsa285[] = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };

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static int ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)

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{

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	if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&

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	    dev->device == PCI_DEVICE_ID_CONTAQ_82C693)

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		switch (PCI_FUNC(dev->devfn)) {

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		case 1:	return 14;

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		case 2:	return 15;

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		case 3:	return 12;

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		}

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	return irqmap_ebsa285[(slot + pin) & 3];

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}

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static struct hw_pci ebsa285_pci __initdata = {

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	.map_irq		= ebsa285_map_irq,

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	.nr_controllers		= 1,

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	.ops			= &dc21285_ops,

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	.setup			= dc21285_setup,

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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 ebsa285_init_pci(void)

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{

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	if (machine_is_ebsa285())

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		pci_common_init(&ebsa285_pci);

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	return 0;

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}

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subsys_initcall(ebsa285_init_pci);

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