1/* 2 * 3 * BRIEF MODULE DESCRIPTION 4 * Board specific pci fixups. 5 * 6 * Copyright 2001 MontaVista Software Inc. 7 * Author: MontaVista Software, Inc. 8 * ppopov@mvista.com or source@mvista.com 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * You should have received a copy of the GNU General Public License along 27 * with this program; if not, write to the Free Software Foundation, Inc., 28 * 675 Mass Ave, Cambridge, MA 02139, USA. 29 */ 30#include <linux/types.h> 31#include <linux/pci.h> 32#include <linux/init.h> 33 34#include <asm/jmr3927/jmr3927.h> 35 36int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) 37{ 38 unsigned char irq = pin; 39 40 /* SMSC SLC90E66 IDE uses irq 14, 15 (default) */ 41 if (dev->vendor == PCI_VENDOR_ID_EFAR && 42 dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1) 43 return irq; 44 /* IRQ rotation (PICMG) */ 45 irq--; /* 0-3 */ 46 if (dev->bus->parent == NULL && 47 slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) { 48 /* PCI CardSlot (IDSEL=A23, DevNu=12) */ 49 /* PCIA => PCIC (IDSEL=A23) */ 50 /* NOTE: JMR3927 JP1 must be set to OPEN */ 51 irq = (irq + 2) % 4; 52 } else if (dev->bus->parent == NULL && 53 slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) { 54 /* PCI CardSlot (IDSEL=A22, DevNu=11) */ 55 /* PCIA => PCIA (IDSEL=A22) */ 56 /* NOTE: JMR3927 JP1 must be set to OPEN */ 57 irq = (irq + 0) % 4; 58 } else { 59 /* PCI Backplane */ 60 irq = (irq + 3 + slot) % 4; 61 } 62 irq++; /* 1-4 */ 63 64 switch (irq) { 65 case 1: 66 irq = JMR3927_IRQ_IOC_PCIA; 67 break; 68 case 2: 69 // wrong for backplane irq = JMR3927_IRQ_IOC_PCIB; 70 irq = JMR3927_IRQ_IOC_PCID; 71 break; 72 case 3: 73 irq = JMR3927_IRQ_IOC_PCIC; 74 break; 75 case 4: 76 // wrong for backplane irq = JMR3927_IRQ_IOC_PCID; 77 irq = JMR3927_IRQ_IOC_PCIB; 78 break; 79 } 80 81 /* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */ 82 if (dev->bus->parent == NULL && 83 slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) 84 irq = JMR3927_IRQ_ETHER0; 85 return irq; 86} 87 88/* Do platform specific device initialization at pci_enable_device() time */ 89int pcibios_plat_dev_init(struct pci_dev *dev) 90{ 91 return 0; 92} 93