1/* 2 * Copyright 2002 Momentum Computer Inc. 3 * Author: Matthew Dharm <mdharm@momenco.com> 4 * 5 * Based on work for the Linux port to the Ocelot board, which is 6 * Copyright 2001 MontaVista Software Inc. 7 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net 8 * 9 * arch/mips/momentum/ocelot_g/pci.c 10 * Board-specific PCI routines for gt64240 controller. 11 * 12 * This program is free software; you can redistribute it and/or modify it 13 * under the terms of the GNU General Public License as published by the 14 * Free Software Foundation; either version 2 of the License, or (at your 15 * option) any later version. 16 */ 17#include <linux/types.h> 18#include <linux/pci.h> 19#include <linux/kernel.h> 20#include <linux/version.h> 21#include <linux/init.h> 22#include <asm/pci.h> 23 24 25void __init gt64240_board_pcibios_fixup_bus(struct pci_bus *bus) 26{ 27 struct pci_bus *current_bus = bus; 28 struct pci_dev *devices; 29 struct list_head *devices_link; 30 u16 cmd; 31 32 /* loop over all known devices on this bus */ 33 list_for_each(devices_link, &(current_bus->devices)) { 34 35 devices = pci_dev_b(devices_link); 36 if (devices == NULL) 37 continue; 38 39 if ((current_bus->number == 0) && 40 PCI_SLOT(devices->devfn) == 1) { 41 /* Intel 82543 Gigabit MAC */ 42 devices->irq = 2; /* irq_nr is 2 for INT0 */ 43 } else if ((current_bus->number == 0) && 44 PCI_SLOT(devices->devfn) == 2) { 45 /* Intel 82543 Gigabit MAC */ 46 devices->irq = 3; /* irq_nr is 3 for INT1 */ 47 } else if ((current_bus->number == 1) && 48 PCI_SLOT(devices->devfn) == 3) { 49 /* Intel 21555 bridge */ 50 devices->irq = 5; /* irq_nr is 8 for INT6 */ 51 } else if ((current_bus->number == 1) && 52 PCI_SLOT(devices->devfn) == 4) { 53 /* PMC Slot */ 54 devices->irq = 9; /* irq_nr is 9 for INT7 */ 55 } else { 56 /* We don't have assign interrupts for other devices. */ 57 devices->irq = 0xff; 58 } 59 60 /* Assign an interrupt number for the device */ 61 bus->ops->write_byte(devices, PCI_INTERRUPT_LINE, devices->irq); 62 63 /* enable master for everything but the GT-64240 */ 64 if (((current_bus->number != 0) && (current_bus->number != 1)) 65 || (PCI_SLOT(devices->devfn) != 0)) { 66 bus->ops->read_word(devices, PCI_COMMAND, &cmd); 67 cmd |= PCI_COMMAND_MASTER; 68 bus->ops->write_word(devices, PCI_COMMAND, cmd); 69 } 70 } 71} 72