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Diffstat (limited to 'arch/arm/mach-ixp4xx/dsmg600-pci.c')
-rw-r--r--arch/arm/mach-ixp4xx/dsmg600-pci.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/dsmg600-pci.c b/arch/arm/mach-ixp4xx/dsmg600-pci.c
new file mode 100644
index 000000000000..9db7e1f42011
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/dsmg600-pci.c
@@ -0,0 +1,74 @@
+/*
+ * DSM-G600 board-level PCI initialization
+ *
+ * Copyright (C) 2006 Tower Technologies
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ * based on ixdp425-pci.c:
+ * Copyright (C) 2002 Intel Corporation.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * Maintainer: http://www.nslu2-linux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+
+void __init dsmg600_pci_preinit(void)
+{
+ set_irq_type(IRQ_DSMG600_PCI_INTA, IRQT_LOW);
+ set_irq_type(IRQ_DSMG600_PCI_INTB, IRQT_LOW);
+ set_irq_type(IRQ_DSMG600_PCI_INTC, IRQT_LOW);
+ set_irq_type(IRQ_DSMG600_PCI_INTD, IRQT_LOW);
+ set_irq_type(IRQ_DSMG600_PCI_INTE, IRQT_LOW);
+ set_irq_type(IRQ_DSMG600_PCI_INTF, IRQT_LOW);
+
+ ixp4xx_pci_preinit();
+}
+
+static int __init dsmg600_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ static int pci_irq_table[DSMG600_PCI_MAX_DEV][DSMG600_PCI_IRQ_LINES] =
+ {
+ { IRQ_DSMG600_PCI_INTE, -1, -1 },
+ { IRQ_DSMG600_PCI_INTA, -1, -1 },
+ { IRQ_DSMG600_PCI_INTB, IRQ_DSMG600_PCI_INTC, IRQ_DSMG600_PCI_INTD },
+ { IRQ_DSMG600_PCI_INTF, -1, -1 },
+ };
+
+ int irq = -1;
+
+ if (slot >= 1 && slot <= DSMG600_PCI_MAX_DEV &&
+ pin >= 1 && pin <= DSMG600_PCI_IRQ_LINES)
+ irq = pci_irq_table[slot-1][pin-1];
+
+ return irq;
+}
+
+struct hw_pci __initdata dsmg600_pci = {
+ .nr_controllers = 1,
+ .preinit = dsmg600_pci_preinit,
+ .swizzle = pci_std_swizzle,
+ .setup = ixp4xx_setup,
+ .scan = ixp4xx_scan_bus,
+ .map_irq = dsmg600_map_irq,
+};
+
+int __init dsmg600_pci_init(void)
+{
+ if (machine_is_dsmg600())
+ pci_common_init(&dsmg600_pci);
+
+ return 0;
+}
+
+subsys_initcall(dsmg600_pci_init);