1/* 2 * arch/mips/pci/fixup-emma2rh.c 3 * This file defines the PCI configration. 4 * 5 * Copyright (C) NEC Electronics Corporation 2004-2006 6 * 7 * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c 8 * 9 * Copyright 2001 MontaVista Software Inc. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 24 */ 25 26#include <linux/kernel.h> 27#include <linux/init.h> 28#include <linux/types.h> 29#include <linux/pci.h> 30 31#include <asm/bootinfo.h> 32#include <asm/debug.h> 33 34#include <asm/emma2rh/emma2rh.h> 35 36#define EMMA2RH_PCI_HOST_SLOT 0x09 37#define EMMA2RH_USB_SLOT 0x03 38#define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */ 39 40/* 41 * we fix up irqs based on the slot number. 42 * The first entry is at AD:11. 43 * Fortunately this works because, although we have two pci buses, 44 * they all have different slot numbers (except for rockhopper slot 20 45 * which is handled below). 46 * 47 */ 48 49#define MAX_SLOT_NUM 10 50static unsigned char irq_map[][5] __initdata = { 51 [3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC, 52 MARKEINS_PCI_IRQ_INTD, 0,}, 53 [4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,}, 54 [5] = {0, 0, 0, 0, 0,}, 55 [6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD, 56 MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,}, 57}; 58 59static void __devinit nec_usb_controller_fixup(struct pci_dev *dev) 60{ 61 if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT) 62 /* on board USB controller configuration */ 63 pci_write_config_dword(dev, 0xe4, 1 << 5); 64} 65 66DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, 67 nec_usb_controller_fixup); 68 69/* 70 * Prevent the PCI layer from seeing the resources allocated to this device 71 * if it is the host bridge by marking it as such. These resources are of 72 * no consequence to the PCI layer (they are handled elsewhere). 73 */ 74static void __devinit emma2rh_pci_host_fixup(struct pci_dev *dev) 75{ 76 int i; 77 78 if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) { 79 dev->class &= 0xff; 80 dev->class |= PCI_CLASS_BRIDGE_HOST << 8; 81 for (i = 0; i < PCI_NUM_RESOURCES; i++) { 82 dev->resource[i].start = 0; 83 dev->resource[i].end = 0; 84 dev->resource[i].flags = 0; 85 } 86 } 87} 88 89DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH, 90 emma2rh_pci_host_fixup); 91 92int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) 93{ 94 return irq_map[slot][pin]; 95} 96 97/* Do platform specific device initialization at pci_enable_device() time */ 98int pcibios_plat_dev_init(struct pci_dev *dev) 99{ 100 return 0; 101} 102