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62 lines
1.3 KiB
62 lines
1.3 KiB
20 years ago
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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/*
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* IRQ functions
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*/
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int __init pcibios_map_platform_irq(u8 slot, u8 pin, struct pci_dev *dev)
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{
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int irq;
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if (dev->bus->number == 0) {
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switch (slot) {
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case 4: return 5; /* eth0 */
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case 8: return 5; /* eth1 */
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case 6: return 2; /* PCI bridge */
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default:
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printk("PCI: Bad IRQ mapping request for slot %d\n", slot);
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return 2;
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}
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} else {
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switch (pin) {
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case 0: irq = 2; break;
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case 1: irq = 2; break;
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case 2: irq = 2; break;
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case 3: irq = 2; break;
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case 4: irq = 2; break;
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default: irq = -1; break;
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}
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}
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return irq;
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}
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static u8 __init sh03_no_swizzle(struct pci_dev *dev, u8 *pin)
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{
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/* no swizzling */
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return PCI_SLOT(dev->devfn);
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}
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static int sh03_pci_lookup_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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int irq = -1;
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/* now lookup the actual IRQ on a platform specific basis (pci-'platform'.c) */
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irq = pcibios_map_platform_irq(slot, pin, dev);
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if( irq < 0 ) {
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pr_debug("PCI: Error mapping IRQ on device %s\n", pci_name(dev));
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return irq;
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}
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pr_debug("Setting IRQ for slot %s to %d\n", pci_name(dev), irq);
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return irq;
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}
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void __init pcibios_fixup_irqs(void)
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{
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pci_fixup_irqs(sh03_no_swizzle, sh03_pci_lookup_irq);
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}
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