| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | } |