1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/arm/mach-footbridge/ebsa285-pci.c
4 *
5 * PCI bios-type initialisation for PCI machines
6 *
7 * Bits taken from various places.
8 */
9#include <linux/kernel.h>
10#include <linux/pci.h>
11#include <linux/init.h>
12
13#include <asm/irq.h>
14#include <asm/mach/pci.h>
15#include <asm/mach-types.h>
16
17static int irqmap_ebsa285[] = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
18
19static int ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
20{
21	if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
22	    dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
23		switch (PCI_FUNC(dev->devfn)) {
24		case 1:	return 14;
25		case 2:	return 15;
26		case 3:	return 12;
27		}
28
29	return irqmap_ebsa285[(slot + pin) & 3];
30}
31
32static struct hw_pci ebsa285_pci __initdata = {
33	.map_irq		= ebsa285_map_irq,
34	.nr_controllers		= 1,
35	.ops			= &dc21285_ops,
36	.setup			= dc21285_setup,
37	.preinit		= dc21285_preinit,
38	.postinit		= dc21285_postinit,
39};
40
41static int __init ebsa285_init_pci(void)
42{
43	if (machine_is_ebsa285())
44		pci_common_init(&ebsa285_pci);
45	return 0;
46}
47
48subsys_initcall(ebsa285_init_pci);
49