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 20void __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} 76