1 files changed, 81 insertions, 0 deletions

diff --git a/arch/sh/drivers/pci/fixups-dreamcast.c b/arch/sh/drivers/pci/fixups-dreamcast.c
new file mode 100644
index 000000000000..cf30e2fa51be
--- /dev/null
+++ b/arch/sh/drivers/pci/fixups-dreamcast.c
@@ -0,0 +1,81 @@
+/*
+ * arch/sh/pci/fixups-dreamcast.c
+ *
+ * PCI fixups for the Sega Dreamcast
+ *
+ * Copyright (C) 2001, 2002  M. R. Brown
+ * Copyright (C) 2002, 2003  Paul Mundt
+ *
+ * This file originally bore the message (with enclosed-$):
+ *      Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
+ *      Dreamcast PCI: Supports SEGA Broadband Adaptor only.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach/pci.h>
+
+static void __init gapspci_fixup_resources(struct pci_dev *dev)
+{
+        struct pci_channel *p = board_pci_channels;
+
+        printk(KERN_NOTICE "PCI: Fixing up device %s\n", pci_name(dev));
+
+        switch (dev->device) {
+        case PCI_DEVICE_ID_SEGA_BBA:
+                /*
+                 * We also assume that dev->devfn == 0
+                 */
+                dev->resource[1].start  = p->io_resource->start  + 0x100;
+                dev->resource[1].end    = dev->resource[1].start + 0x200 - 1;
+                break;
+        default:
+                printk("PCI: Failed resource fixup\n");
+        }
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources);
+
+void __init pcibios_fixup_bus(struct pci_bus *bus)
+{
+        /* 
+         * We don't have any sub bus to fix up, and this is a rather
+         * stupid place to put general device fixups. Don't do it.
+         * Use the pcibios_fixups table or suffer the consequences.
+         */
+}
+
+void __init pcibios_fixup_irqs(void)
+{
+        struct pci_dev *dev = 0;
+
+        for_each_pci_dev(dev) {
+                /*
+                 * The interrupt routing semantics here are quite trivial.
+                 *
+                 * We basically only support one interrupt, so we only bother
+                 * updating a device's interrupt line with this single shared
+                 * interrupt. Keeps routing quite simple, doesn't it?
+                 */
+                printk(KERN_NOTICE "PCI: Fixing up IRQ routing for device %s\n",
+                       pci_name(dev));
+
+                dev->irq = GAPSPCI_IRQ;
+
+                pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+        }
+}
+