/* * * BRIEF MODULE DESCRIPTION * Board specific pci fixups. * * Copyright 2001 MontaVista Software Inc. * Author: MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/types.h> #include <asm/txx9/pci.h> #include <asm/txx9/jmr3927.h> int jmr3927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { unsigned char irq = pin; /* IRQ rotation (PICMG) */ irq--; /* 0-3 */ if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) { /* PCI CardSlot (IDSEL=A23, DevNu=12) */ /* PCIA => PCIC (IDSEL=A23) */ /* NOTE: JMR3927 JP1 must be set to OPEN */ irq = (irq + 2) % 4; } else if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) { /* PCI CardSlot (IDSEL=A22, DevNu=11) */ /* PCIA => PCIA (IDSEL=A22) */ /* NOTE: JMR3927 JP1 must be set to OPEN */ irq = (irq + 0) % 4; } else { /* PCI Backplane */ if (txx9_pci_option & TXX9_PCI_OPT_PICMG) irq = (irq + 33 - slot) % 4; else irq = (irq + 3 + slot) % 4; } irq++; /* 1-4 */ switch (irq) { case 1: irq = JMR3927_IRQ_IOC_PCIA; break; case 2: irq = JMR3927_IRQ_IOC_PCIB; break; case 3: irq = JMR3927_IRQ_IOC_PCIC; break; case 4: irq = JMR3927_IRQ_IOC_PCID; break; } /* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */ if (dev->bus->parent == NULL && slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) irq = JMR3927_IRQ_ETHER0; return irq; }