Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * arch/sh/pci/fixups-dreamcast.c |
| 3 | * |
| 4 | * PCI fixups for the Sega Dreamcast |
| 5 | * |
| 6 | * Copyright (C) 2001, 2002 M. R. Brown |
| 7 | * Copyright (C) 2002, 2003 Paul Mundt |
| 8 | * |
| 9 | * This file originally bore the message (with enclosed-$): |
| 10 | * Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp |
| 11 | * Dreamcast PCI: Supports SEGA Broadband Adaptor only. |
| 12 | * |
| 13 | * This file is subject to the terms and conditions of the GNU General Public |
| 14 | * License. See the file "COPYING" in the main directory of this archive |
| 15 | * for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/config.h> |
| 19 | #include <linux/sched.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/param.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/irq.h> |
| 25 | #include <linux/pci.h> |
| 26 | |
| 27 | #include <asm/io.h> |
| 28 | #include <asm/irq.h> |
| 29 | #include <asm/mach/pci.h> |
| 30 | |
| 31 | static void __init gapspci_fixup_resources(struct pci_dev *dev) |
| 32 | { |
| 33 | struct pci_channel *p = board_pci_channels; |
| 34 | |
| 35 | printk(KERN_NOTICE "PCI: Fixing up device %s\n", pci_name(dev)); |
| 36 | |
| 37 | switch (dev->device) { |
| 38 | case PCI_DEVICE_ID_SEGA_BBA: |
| 39 | /* |
| 40 | * We also assume that dev->devfn == 0 |
| 41 | */ |
| 42 | dev->resource[1].start = p->io_resource->start + 0x100; |
| 43 | dev->resource[1].end = dev->resource[1].start + 0x200 - 1; |
| 44 | break; |
| 45 | default: |
| 46 | printk("PCI: Failed resource fixup\n"); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources); |
| 51 | |
| 52 | void __init pcibios_fixup_bus(struct pci_bus *bus) |
| 53 | { |
| 54 | /* |
| 55 | * We don't have any sub bus to fix up, and this is a rather |
| 56 | * stupid place to put general device fixups. Don't do it. |
| 57 | * Use the pcibios_fixups table or suffer the consequences. |
| 58 | */ |
| 59 | } |
| 60 | |
| 61 | void __init pcibios_fixup_irqs(void) |
| 62 | { |
| 63 | struct pci_dev *dev = 0; |
| 64 | |
| 65 | for_each_pci_dev(dev) { |
| 66 | /* |
| 67 | * The interrupt routing semantics here are quite trivial. |
| 68 | * |
| 69 | * We basically only support one interrupt, so we only bother |
| 70 | * updating a device's interrupt line with this single shared |
| 71 | * interrupt. Keeps routing quite simple, doesn't it? |
| 72 | */ |
| 73 | printk(KERN_NOTICE "PCI: Fixing up IRQ routing for device %s\n", |
| 74 | pci_name(dev)); |
| 75 | |
| 76 | dev->irq = GAPSPCI_IRQ; |
| 77 | |
| 78 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); |
| 79 | } |
| 80 | } |
| 81 | |