1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * linux/arch/arm/mach-footbridge/netwinder-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 | /* |
18 | * We now use the slot ID instead of the device identifiers to select |
19 | * which interrupt is routed where. |
20 | */ |
21 | static int netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
22 | { |
23 | switch (slot) { |
24 | case 0: /* host bridge */ |
25 | return 0; |
26 | |
27 | case 9: /* CyberPro */ |
28 | return IRQ_NETWINDER_VGA; |
29 | |
30 | case 10: /* DC21143 */ |
31 | return IRQ_NETWINDER_ETHER100; |
32 | |
33 | case 12: /* Winbond 553 */ |
34 | return IRQ_ISA_HARDDISK1; |
35 | |
36 | case 13: /* Winbond 89C940F */ |
37 | return IRQ_NETWINDER_ETHER10; |
38 | |
39 | default: |
40 | printk(KERN_ERR "PCI: unknown device in slot %s\n" , |
41 | pci_name(dev)); |
42 | return 0; |
43 | } |
44 | } |
45 | |
46 | static struct hw_pci netwinder_pci __initdata = { |
47 | .map_irq = netwinder_map_irq, |
48 | .nr_controllers = 1, |
49 | .ops = &dc21285_ops, |
50 | .setup = dc21285_setup, |
51 | .preinit = dc21285_preinit, |
52 | .postinit = dc21285_postinit, |
53 | }; |
54 | |
55 | static int __init netwinder_pci_init(void) |
56 | { |
57 | if (machine_is_netwinder()) |
58 | pci_common_init(&netwinder_pci); |
59 | return 0; |
60 | } |
61 | |
62 | subsys_initcall(netwinder_pci_init); |
63 | |