1 files changed, 92 insertions, 0 deletions

diff --git a/arch/mips/pci/fixup-rbtx4938.c b/arch/mips/pci/fixup-rbtx4938.c
new file mode 100644
index 000000000000..64d4510c0265
--- /dev/null
+++ b/arch/mips/pci/fixup-rbtx4938.c
@@ -0,0 +1,92 @@
+/*
+ * Toshiba rbtx4938 pci routines
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/txx9/rbtx4938.h>
+
+extern struct pci_controller tx4938_pci_controller[];
+
+static int pci_get_irq(const struct pci_dev *dev, int pin)
+{
+        int irq = pin;
+        u8 slot = PCI_SLOT(dev->devfn);
+        struct pci_controller *controller = (struct pci_controller *)dev->sysdata;
+
+        if (controller == &tx4938_pci_controller[1]) {
+                /* TX4938 PCIC1 */
+                switch (slot) {
+                case TX4938_PCIC_IDSEL_AD_TO_SLOT(31):
+                        if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH0_SEL)
+                                return RBTX4938_IRQ_IRC + TX4938_IR_ETH0;
+                        break;
+                case TX4938_PCIC_IDSEL_AD_TO_SLOT(30):
+                        if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH1_SEL)
+                                return RBTX4938_IRQ_IRC + TX4938_IR_ETH1;
+                        break;
+                }
+                return 0;
+        }
+
+        /* IRQ rotation */
+        irq--;  /* 0-3 */
+        if (dev->bus->parent == NULL &&
+            (slot == TX4938_PCIC_IDSEL_AD_TO_SLOT(23))) {
+                /* PCI CardSlot (IDSEL=A23) */
+                /* PCIA => PCIA (IDSEL=A23) */
+                irq = (irq + 0 + slot) % 4;
+        } else {
+                /* PCI Backplane */
+                irq = (irq + 33 - slot) % 4;
+        }
+        irq++;  /* 1-4 */
+
+        switch (irq) {
+        case 1:
+                irq = RBTX4938_IRQ_IOC_PCIA;
+                break;
+        case 2:
+                irq = RBTX4938_IRQ_IOC_PCIB;
+                break;
+        case 3:
+                irq = RBTX4938_IRQ_IOC_PCIC;
+                break;
+        case 4:
+                irq = RBTX4938_IRQ_IOC_PCID;
+                break;
+        }
+        return irq;
+}
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+        unsigned char irq = 0;
+
+        irq = pci_get_irq(dev, pin);
+
+        printk(KERN_INFO "PCI: 0x%02x:0x%02x(0x%02x,0x%02x) IRQ=%d\n",
+               dev->bus->number, dev->devfn, PCI_SLOT(dev->devfn),
+               PCI_FUNC(dev->devfn), irq);
+
+        return irq;
+}
+
+/*
+ * Do platform specific device initialization at pci_enable_device() time
+ */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+        return 0;
+}
+