Merge ../linux-2.6 by hand
[linux-2.6] / arch / mips / pci / fixup-ocelot.c
1 /*
2  * Copyright 2001 MontaVista Software Inc.
3  * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
4  *
5  * arch/mips/gt64120/momenco_ocelot/pci.c
6  *     Board-specific PCI routines for gt64120 controller.
7  *
8  * This program is free software; you can redistribute  it and/or modify it
9  * under  the terms of  the GNU General  Public License as published by the
10  * Free Software Foundation;  either version 2 of the  License, or (at your
11  * option) any later version.
12  */
13 #include <linux/types.h>
14 #include <linux/pci.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <asm/pci.h>
18
19
20 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
21 {
22         struct pci_bus *current_bus = bus;
23         struct pci_dev *devices;
24         struct list_head *devices_link;
25         u16 cmd;
26
27         list_for_each(devices_link, &(current_bus->devices)) {
28
29                 devices = pci_dev_b(devices_link);
30                 if (devices == NULL)
31                         continue;
32
33                 if (PCI_SLOT(devices->devfn) == 1) {
34                         /*
35                          * Slot 1 is primary ether port, i82559
36                          * we double-check against that assumption
37                          */
38                         if ((devices->vendor != 0x8086) ||
39                             (devices->device != 0x1209)) {
40                                 panic("pcibios_fixup_bus: found "
41                                      "unexpected PCI device in slot 1.");
42                         }
43                         devices->irq = 2;       /* irq_nr is 2 for INT0 */
44                 } else if (PCI_SLOT(devices->devfn) == 2) {
45                         /*
46                          * Slot 2 is secondary ether port, i21143
47                          * we double-check against that assumption
48                          */
49                         if ((devices->vendor != 0x1011) ||
50                             (devices->device != 0x19)) {
51                                 panic("galileo_pcibios_fixup_bus: "
52                                       "found unexpected PCI device in slot 2.");
53                         }
54                         devices->irq = 3;       /* irq_nr is 3 for INT1 */
55                 } else if (PCI_SLOT(devices->devfn) == 4) {
56                         /* PMC Slot 1 */
57                         devices->irq = 8;       /* irq_nr is 8 for INT6 */
58                 } else if (PCI_SLOT(devices->devfn) == 5) {
59                         /* PMC Slot 1 */
60                         devices->irq = 9;       /* irq_nr is 9 for INT7 */
61                 } else {
62                         /* We don't have assign interrupts for other devices. */
63                         devices->irq = 0xff;
64                 }
65
66                 /* Assign an interrupt number for the device */
67                 bus->ops->write_byte(devices, PCI_INTERRUPT_LINE,
68                                      devices->irq);
69
70                 /* enable master */
71                 bus->ops->read_word(devices, PCI_COMMAND, &cmd);
72                 cmd |= PCI_COMMAND_MASTER;
73                 bus->ops->write_word(devices, PCI_COMMAND, cmd);
74         }
75 }