1 files changed, 123 insertions, 0 deletions

diff --git a/arch/arm/mach-iop3xx/iq80321-pci.c b/arch/arm/mach-iop3xx/iq80321-pci.c
new file mode 100644
index 000000000000..79fea3d20b66
--- /dev/null
+++ b/arch/arm/mach-iop3xx/iq80321-pci.c
@@ -0,0 +1,123 @@
+/*
+ * arch/arm/mach-iop3xx/iq80321-pci.c
+ *
+ * PCI support for the Intel IQ80321 reference board
+ *
+ * Author: Rory Bolt <rorybolt@pacbell.net>
+ * Copyright (C) 2002 Rory Bolt
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * 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/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+
+/*
+ * The following macro is used to lookup irqs in a standard table
+ * format for those systems that do not already have PCI
+ * interrupts properly routed.  We assume 1 <= pin <= 4
+ */
+#define PCI_IRQ_TABLE_LOOKUP(minid,maxid)       \
+({ int _ctl_ = -1;                              \
+   unsigned int _idsel = idsel - minid;         \
+   if (_idsel <= maxid)                         \
+      _ctl_ = pci_irq_table[_idsel][pin-1];     \
+   _ctl_; })
+
+#define INTA    IRQ_IQ80321_INTA
+#define INTB    IRQ_IQ80321_INTB
+#define INTC    IRQ_IQ80321_INTC
+#define INTD    IRQ_IQ80321_INTD
+
+#define INTE    IRQ_IQ80321_I82544
+
+static inline int __init
+iq80321_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+{
+        static int pci_irq_table[][4] = {
+                /*
+                 * PCI IDSEL/INTPIN->INTLINE
+                 * A       B       C       D
+                 */
+                {INTE, INTE, INTE, INTE}, /* Gig-E */
+                {-1, -1, -1, -1},         /* Unused */
+                {INTC, INTD, INTA, INTB}, /* PCI-X Slot */
+                {-1, -1, -1, -1},
+        };
+
+        BUG_ON(pin < 1 || pin > 4);
+
+//      return PCI_IRQ_TABLE_LOOKUP(4, 7);
+        return pci_irq_table[idsel%4][pin-1];
+}
+
+static int iq80321_setup(int nr, struct pci_sys_data *sys)
+{
+        struct resource *res;
+
+        if(nr != 0)
+                return 0;
+
+        res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL);
+        if (!res)
+                panic("PCI: unable to alloc resources");
+
+        memset(res, 0, sizeof(struct resource) * 2);
+
+        res[0].start = IOP321_PCI_LOWER_IO_VA;
+        res[0].end   = IOP321_PCI_UPPER_IO_VA;
+        res[0].name  = "IQ80321 PCI I/O Space";
+        res[0].flags = IORESOURCE_IO;
+
+        res[1].start = IOP321_PCI_LOWER_MEM_PA;
+        res[1].end   = IOP321_PCI_UPPER_MEM_PA;
+        res[1].name  = "IQ80321 PCI Memory Space";
+        res[1].flags = IORESOURCE_MEM;
+
+        request_resource(&ioport_resource, &res[0]);
+        request_resource(&iomem_resource, &res[1]);
+
+        sys->mem_offset = IOP321_PCI_MEM_OFFSET;
+        sys->io_offset  = IOP321_PCI_IO_OFFSET;
+
+        sys->resource[0] = &res[0];
+        sys->resource[1] = &res[1];
+        sys->resource[2] = NULL;
+
+        return 1;
+}
+
+static void iq80321_preinit(void)
+{
+        iop321_init();
+}
+
+static struct hw_pci iq80321_pci __initdata = {
+        .swizzle        = pci_std_swizzle,
+        .nr_controllers = 1,
+        .setup          = iq80321_setup,
+        .scan           = iop321_scan_bus,
+        .preinit        = iq80321_preinit,
+        .map_irq        = iq80321_map_irq
+};
+
+static int __init iq80321_pci_init(void)
+{
+        if (machine_is_iq80321())
+                pci_common_init(&iq80321_pci);
+        return 0;
+}
+
+subsys_initcall(iq80321_pci_init);
+
+
+
+