2 * linux/arch/arm/mach-footbridge/personal-pci.c
4 * PCI bios-type initialisation for PCI machines
6 * Bits taken from various places.
8 #include <linux/kernel.h>
10 #include <linux/init.h>
13 #include <asm/mach/pci.h>
14 #include <asm/hardware/dec21285.h>
16 static int irqmap_personal_server[] __initdata = {
17 IRQ_IN0, IRQ_IN1, IRQ_IN2, IRQ_IN3, 0, 0, 0,
18 IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI
21 static int __init personal_server_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
25 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
27 if (line > 0x40 && line <= 0x5f) {
28 /* line corresponds to the bit controlling this interrupt
29 * in the footbridge. Ignore the first 8 interrupt bits,
30 * look up the rest in the map. IN0 is bit number 8
32 return irqmap_personal_server[(line & 0x1f) - 8];
33 } else if (line == 0) {
37 return irqmap_personal_server[(line - 1) & 3];
40 struct hw_pci personal_server_pci __initdata = {
41 .setup_resources = dc21285_setup_resources,
43 .mem_offset = DC21285_PCI_MEM,
44 .swizzle = no_swizzle,
45 .map_irq = personal_server_map_irq,