1 files changed, 70 insertions, 0 deletions

diff --git a/arch/frv/mb93090-mb00/pci-irq.c b/arch/frv/mb93090-mb00/pci-irq.c
new file mode 100644
index 000000000000..24622d89b1ca
--- /dev/null
+++ b/arch/frv/mb93090-mb00/pci-irq.c
@@ -0,0 +1,70 @@
+/* pci-irq.c: PCI IRQ routing on the FRV motherboard
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ * derived from: arch/i386/kernel/pci-irq.c: (c) 1999--2000 Martin Mares <mj@suse.cz>
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <asm/io.h>
+#include <asm/smp.h>
+#include <asm/irq-routing.h>
+
+#include "pci-frv.h"
+
+/*
+ *      DEVICE  DEVNO   INT#A   INT#B   INT#C   INT#D
+ *      ======= ======= ======= ======= ======= =======
+ *      MB86943 0       fpga.10 -       -       -
+ *      RTL8029 16      fpga.12 -       -       -
+ *      SLOT 1  19      fpga.6  fpga.5  fpga.4  fpga.3
+ *      SLOT 2  18      fpga.5  fpga.4  fpga.3  fpga.6
+ *      SLOT 3  17      fpga.4  fpga.3  fpga.6  fpga.5
+ *
+ */
+
+static const uint8_t __initdata pci_bus0_irq_routing[32][4] = {
+        [0 ] {  IRQ_FPGA_MB86943_PCI_INTA },
+        [16] {  IRQ_FPGA_RTL8029_INTA },
+        [17] {  IRQ_FPGA_PCI_INTC, IRQ_FPGA_PCI_INTD, IRQ_FPGA_PCI_INTA, IRQ_FPGA_PCI_INTB },
+        [18] {  IRQ_FPGA_PCI_INTB, IRQ_FPGA_PCI_INTC, IRQ_FPGA_PCI_INTD, IRQ_FPGA_PCI_INTA },
+        [19] {  IRQ_FPGA_PCI_INTA, IRQ_FPGA_PCI_INTB, IRQ_FPGA_PCI_INTC, IRQ_FPGA_PCI_INTD },
+};
+
+void __init pcibios_irq_init(void)
+{
+}
+
+void __init pcibios_fixup_irqs(void)
+{
+        struct pci_dev *dev = NULL;
+        uint8_t line, pin;
+
+        while (dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev),
+               dev != NULL
+               ) {
+                pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+                if (pin) {
+                        dev->irq = pci_bus0_irq_routing[PCI_SLOT(dev->devfn)][pin - 1];
+                        pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+                }
+                pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
+        }
+}
+
+void __init pcibios_penalize_isa_irq(int irq)
+{
+}
+
+void pcibios_enable_irq(struct pci_dev *dev)
+{
+        pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+}