1 /*
2  * linux/arch/arm/mach-footbridge/ebsa285-pci.c
3  *
4  * PCI bios-type initialisation for PCI machines
5  *
6  * Bits taken from various places.
7  */
8 #include <linux/kernel.h>
9 #include <linux/pci.h>
10 #include <linux/init.h>
11 
12 #include <asm/irq.h>
13 #include <asm/mach/pci.h>
14 #include <asm/mach-types.h>
15 
16 static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
17 
18 static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
19 {
20 	if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
21 	    dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
22 		switch (PCI_FUNC(dev->devfn)) {
23 			case 1:	return 14;
24 			case 2:	return 15;
25 			case 3:	return 12;
26 		}
27 
28 	return irqmap_ebsa285[(slot + pin) & 3];
29 }
30 
31 static struct hw_pci ebsa285_pci __initdata = {
32 	.swizzle		= pci_std_swizzle,
33 	.map_irq		= ebsa285_map_irq,
34 	.nr_controllers		= 1,
35 	.setup			= dc21285_setup,
36 	.scan			= dc21285_scan_bus,
37 	.preinit		= dc21285_preinit,
38 	.postinit		= dc21285_postinit,
39 };
40 
41 static int __init ebsa285_init_pci(void)
42 {
43 	if (machine_is_ebsa285())
44 		pci_common_init(&ebsa285_pci);
45 	return 0;
46 }
47 
48 subsys_initcall(ebsa285_init_pci);
49