1 #include <linux/kernel.h> 2 #include <linux/init.h> 3 #include <linux/types.h> 4 #include <linux/pci.h> 5 6 /* 7 * IRQ functions 8 */ 9 10 int __init pcibios_map_platform_irq(u8 slot, u8 pin, struct pci_dev *dev) 11 { 12 int irq; 13 14 if (dev->bus->number == 0) { 15 switch (slot) { 16 case 4: return 5; /* eth0 */ 17 case 8: return 5; /* eth1 */ 18 case 6: return 2; /* PCI bridge */ 19 default: 20 printk("PCI: Bad IRQ mapping request for slot %d\n", slot); 21 return 2; 22 } 23 } else { 24 switch (pin) { 25 case 0: irq = 2; break; 26 case 1: irq = 2; break; 27 case 2: irq = 2; break; 28 case 3: irq = 2; break; 29 case 4: irq = 2; break; 30 default: irq = -1; break; 31 } 32 } 33 return irq; 34 } 35 36 static u8 __init sh03_no_swizzle(struct pci_dev *dev, u8 *pin) 37 { 38 /* no swizzling */ 39 return PCI_SLOT(dev->devfn); 40 } 41 42 static int sh03_pci_lookup_irq(struct pci_dev *dev, u8 slot, u8 pin) 43 { 44 int irq = -1; 45 46 /* now lookup the actual IRQ on a platform specific basis (pci-'platform'.c) */ 47 irq = pcibios_map_platform_irq(slot, pin, dev); 48 if( irq < 0 ) { 49 pr_debug("PCI: Error mapping IRQ on device %s\n", pci_name(dev)); 50 return irq; 51 } 52 53 pr_debug("Setting IRQ for slot %s to %d\n", pci_name(dev), irq); 54 55 return irq; 56 } 57 58 void __init pcibios_fixup_irqs(void) 59 { 60 pci_fixup_irqs(sh03_no_swizzle, sh03_pci_lookup_irq); 61 } 62