patch-2.4.20 linux-2.4.20/arch/mips/momentum/ocelot_g/pci-irq.c
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- Lines: 72
- Date:
Thu Nov 28 15:53:10 2002
- Orig file:
linux-2.4.19/arch/mips/momentum/ocelot_g/pci-irq.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/arch/mips/momentum/ocelot_g/pci-irq.c linux-2.4.20/arch/mips/momentum/ocelot_g/pci-irq.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2002 Momentum Computer Inc.
+ * Author: Matthew Dharm <mdharm@momenco.com>
+ *
+ * Based on work for the Linux port to the Ocelot board, which is
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ *
+ * arch/mips/momentum/ocelot_g/pci.c
+ * Board-specific PCI routines for gt64240 controller.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <asm/pci.h>
+
+
+void __init gt64240_board_pcibios_fixup_bus(struct pci_bus *bus)
+{
+ struct pci_bus *current_bus = bus;
+ struct pci_dev *devices;
+ struct list_head *devices_link;
+ u16 cmd;
+
+ /* loop over all known devices on this bus */
+ list_for_each(devices_link, &(current_bus->devices)) {
+
+ devices = pci_dev_b(devices_link);
+ if (devices == NULL)
+ continue;
+
+ if ((current_bus->number == 0) &&
+ PCI_SLOT(devices->devfn) == 1) {
+ /* Intel 82543 Gigabit MAC */
+ devices->irq = 2; /* irq_nr is 2 for INT0 */
+ } else if ((current_bus->number == 0) &&
+ PCI_SLOT(devices->devfn) == 2) {
+ /* Intel 82543 Gigabit MAC */
+ devices->irq = 3; /* irq_nr is 3 for INT1 */
+ } else if ((current_bus->number == 1) &&
+ PCI_SLOT(devices->devfn) == 3) {
+ /* Intel 21555 bridge */
+ devices->irq = 5; /* irq_nr is 8 for INT6 */
+ } else if ((current_bus->number == 1) &&
+ PCI_SLOT(devices->devfn) == 4) {
+ /* PMC Slot */
+ devices->irq = 9; /* irq_nr is 9 for INT7 */
+ } else {
+ /* We don't have assign interrupts for other devices. */
+ devices->irq = 0xff;
+ }
+
+ /* Assign an interrupt number for the device */
+ bus->ops->write_byte(devices, PCI_INTERRUPT_LINE, devices->irq);
+
+ /* enable master for everything but the GT-64240 */
+ if (((current_bus->number != 0) && (current_bus->number != 1))
+ || (PCI_SLOT(devices->devfn) != 0)) {
+ bus->ops->read_word(devices, PCI_COMMAND, &cmd);
+ cmd |= PCI_COMMAND_MASTER;
+ bus->ops->write_word(devices, PCI_COMMAND, cmd);
+ }
+ }
+}
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