patch-2.4.20 linux-2.4.20/arch/mips/momentum/ocelot_g/pci-irq.c

• 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);
+		}
+	}
+}