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 | |