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
17 static int irqmap_ebsa285[] = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
18
19 static 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
32 static 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
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
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