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 mv64340 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 mv64340_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 (PCI_FUNC(devices->devfn) == 0)) { 42 /* LSI 53C10101R SCSI (A) */ 43 devices->irq = 2; 44 } else if ((current_bus->number == 0) && 45 (PCI_SLOT(devices->devfn) == 1) && 46 (PCI_FUNC(devices->devfn) == 1)) { 47 /* LSI 53C10101R SCSI (B) */ 48 devices->irq = 2; 49 } else if ((current_bus->number == 1) && 50 (PCI_SLOT(devices->devfn) == 1)) { 51 /* Intel 21555 bridge */ 52 devices->irq = 12; 53 } else if ((current_bus->number == 1) && 54 (PCI_SLOT(devices->devfn) == 2)) { 55 /* PMC Slot */ 56 devices->irq = 4; 57 } else { 58 /* We don't have assign interrupts for other devices. */ 59 devices->irq = 0xff; 60 } 61 62 /* Assign an interrupt number for the device */ 63 bus->ops->write_byte(devices, PCI_INTERRUPT_LINE, devices->irq); 64 65 /* enable master for everything but the MV-64340 */ 66 if (((current_bus->number != 0) && (current_bus->number != 1)) 67 || (PCI_SLOT(devices->devfn) != 0)) { 68 bus->ops->read_word(devices, PCI_COMMAND, &cmd); 69 cmd |= PCI_COMMAND_MASTER; 70 bus->ops->write_word(devices, PCI_COMMAND, cmd); 71 } 72 } 73} 74