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