1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/arch/arm/mach-footbridge/ebsa285-pci.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * PCI bios-type initialisation for PCI machines
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Bits taken from various places.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <linux/pci.h>
11*4882a593Smuzhiyun #include <linux/init.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <asm/irq.h>
14*4882a593Smuzhiyun #include <asm/mach/pci.h>
15*4882a593Smuzhiyun #include <asm/mach-types.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun static int irqmap_ebsa285[] = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
18*4882a593Smuzhiyun
ebsa285_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)19*4882a593Smuzhiyun static int ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
22*4882a593Smuzhiyun dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
23*4882a593Smuzhiyun switch (PCI_FUNC(dev->devfn)) {
24*4882a593Smuzhiyun case 1: return 14;
25*4882a593Smuzhiyun case 2: return 15;
26*4882a593Smuzhiyun case 3: return 12;
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun return irqmap_ebsa285[(slot + pin) & 3];
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun static struct hw_pci ebsa285_pci __initdata = {
33*4882a593Smuzhiyun .map_irq = ebsa285_map_irq,
34*4882a593Smuzhiyun .nr_controllers = 1,
35*4882a593Smuzhiyun .ops = &dc21285_ops,
36*4882a593Smuzhiyun .setup = dc21285_setup,
37*4882a593Smuzhiyun .preinit = dc21285_preinit,
38*4882a593Smuzhiyun .postinit = dc21285_postinit,
39*4882a593Smuzhiyun };
40*4882a593Smuzhiyun
ebsa285_init_pci(void)41*4882a593Smuzhiyun static int __init ebsa285_init_pci(void)
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun if (machine_is_ebsa285())
44*4882a593Smuzhiyun pci_common_init(&ebsa285_pci);
45*4882a593Smuzhiyun return 0;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun subsys_initcall(ebsa285_init_pci);
49