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