82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
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/*
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* arch/sh/pci/fixups-dreamcast.c
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*
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* PCI fixups for the Sega Dreamcast
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*
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* Copyright (C) 2001, 2002 M. R. Brown
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* Copyright (C) 2002, 2003 Paul Mundt
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*
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* This file originally bore the message (with enclosed-$):
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* Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
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* Dreamcast PCI: Supports SEGA Broadband Adaptor only.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/config.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/pci.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/mach/pci.h>
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static void __init gapspci_fixup_resources(struct pci_dev *dev)
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{
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struct pci_channel *p = board_pci_channels;
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printk(KERN_NOTICE "PCI: Fixing up device %s\n", pci_name(dev));
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switch (dev->device) {
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case PCI_DEVICE_ID_SEGA_BBA:
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/*
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* We also assume that dev->devfn == 0
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*/
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dev->resource[1].start = p->io_resource->start + 0x100;
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dev->resource[1].end = dev->resource[1].start + 0x200 - 1;
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break;
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default:
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printk("PCI: Failed resource fixup\n");
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}
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}
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DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources);
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void __init pcibios_fixup_bus(struct pci_bus *bus)
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{
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/*
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* We don't have any sub bus to fix up, and this is a rather
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* stupid place to put general device fixups. Don't do it.
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* Use the pcibios_fixups table or suffer the consequences.
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*/
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}
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void __init pcibios_fixup_irqs(void)
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{
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struct pci_dev *dev = 0;
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for_each_pci_dev(dev) {
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/*
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* The interrupt routing semantics here are quite trivial.
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*
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* We basically only support one interrupt, so we only bother
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* updating a device's interrupt line with this single shared
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* interrupt. Keeps routing quite simple, doesn't it?
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*/
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printk(KERN_NOTICE "PCI: Fixing up IRQ routing for device %s\n",
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pci_name(dev));
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dev->irq = GAPSPCI_IRQ;
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pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
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}
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}
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