patch-2.4.22 linux-2.4.22/arch/mips/momentum/ocelot_c/pci-irq.c

• Lines: 74
• Date: 2003-08-25 04:44:40.000000000 -0700
• Orig file: linux-2.4.21/arch/mips/momentum/ocelot_c/pci-irq.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/mips/momentum/ocelot_c/pci-irq.c linux-2.4.22/arch/mips/momentum/ocelot_c/pci-irq.c
@@ -0,0 +1,73 @@
+/*
+ * 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 mv64340 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 mv64340_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) &&
+			(PCI_FUNC(devices->devfn) == 0)) {
+			/* LSI 53C10101R SCSI (A) */
+			devices->irq = 2;
+		} else if ((current_bus->number == 0) &&
+			(PCI_SLOT(devices->devfn) == 1) &&
+			(PCI_FUNC(devices->devfn) == 1)) {
+			/* LSI 53C10101R SCSI (B) */
+			devices->irq = 2;
+		} else if ((current_bus->number == 1) &&
+			(PCI_SLOT(devices->devfn) == 1)) {
+			/* Intel 21555 bridge */
+			devices->irq = 12;
+		} else if ((current_bus->number == 1) &&
+			(PCI_SLOT(devices->devfn) == 2)) {
+			/* PMC Slot */
+			devices->irq = 4;
+		} 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 MV-64340 */
+		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);
+		}
+	}
+}