11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * arch/sh/pci/fixups-dreamcast.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * PCI fixups for the Sega Dreamcast 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (C) 2001, 2002 M. R. Brown 7959f85f8SPaul Mundt * Copyright (C) 2002, 2003, 2006 Paul Mundt 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * This file originally bore the message (with enclosed-$): 101da177e4SLinus Torvalds * Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp 111da177e4SLinus Torvalds * Dreamcast PCI: Supports SEGA Broadband Adaptor only. 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 141da177e4SLinus Torvalds * License. See the file "COPYING" in the main directory of this archive 151da177e4SLinus Torvalds * for more details. 161da177e4SLinus Torvalds */ 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds #include <linux/sched.h> 191da177e4SLinus Torvalds #include <linux/kernel.h> 201da177e4SLinus Torvalds #include <linux/param.h> 211da177e4SLinus Torvalds #include <linux/interrupt.h> 221da177e4SLinus Torvalds #include <linux/init.h> 231da177e4SLinus Torvalds #include <linux/irq.h> 241da177e4SLinus Torvalds #include <linux/pci.h> 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds #include <asm/io.h> 271da177e4SLinus Torvalds #include <asm/irq.h> 281da177e4SLinus Torvalds #include <asm/mach/pci.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds static void __init gapspci_fixup_resources(struct pci_dev *dev) 311da177e4SLinus Torvalds { 321da177e4SLinus Torvalds struct pci_channel *p = board_pci_channels; 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds printk(KERN_NOTICE "PCI: Fixing up device %s\n", pci_name(dev)); 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds switch (dev->device) { 371da177e4SLinus Torvalds case PCI_DEVICE_ID_SEGA_BBA: 381da177e4SLinus Torvalds /* 391da177e4SLinus Torvalds * We also assume that dev->devfn == 0 401da177e4SLinus Torvalds */ 411da177e4SLinus Torvalds dev->resource[1].start = p->io_resource->start + 0x100; 421da177e4SLinus Torvalds dev->resource[1].end = dev->resource[1].start + 0x200 - 1; 431da177e4SLinus Torvalds break; 441da177e4SLinus Torvalds default: 451da177e4SLinus Torvalds printk("PCI: Failed resource fixup\n"); 461da177e4SLinus Torvalds } 471da177e4SLinus Torvalds } 481da177e4SLinus Torvalds DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources); 491da177e4SLinus Torvalds 50959f85f8SPaul Mundt int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin) 511da177e4SLinus Torvalds { 521da177e4SLinus Torvalds /* 531da177e4SLinus Torvalds * The interrupt routing semantics here are quite trivial. 541da177e4SLinus Torvalds * 551da177e4SLinus Torvalds * We basically only support one interrupt, so we only bother 561da177e4SLinus Torvalds * updating a device's interrupt line with this single shared 571da177e4SLinus Torvalds * interrupt. Keeps routing quite simple, doesn't it? 581da177e4SLinus Torvalds */ 59959f85f8SPaul Mundt return GAPSPCI_IRQ; 601da177e4SLinus Torvalds } 61