arch/mips/pci/fixups-ev96100.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      EV96100 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/kernel.h>
  33 #include <linux/init.h>
  34 #include <linux/pci_ids.h>
  35
  36 #include <asm/gt64120.h>
  37 #include <asm/galileo-boards/ev96100.h>
  38
  39 extern unsigned short get_gt_devid(void);
  40
  41 void __init pcibios_fixup_resources(struct pci_dev *dev)
  42 {
  43 }
  44
  45 void __init pcibios_fixup(void)
  46 {
  47 }
  48
  49 void __init pcibios_fixup_irqs(void)
  50 {
  51         struct pci_dev *dev;
  52         unsigned int slot;
  53         u32 vendor;
  54         unsigned short gt_devid = get_gt_devid();
  55
  56         /*
  57          ** EV96100/A interrupt routing for pci bus 0
  58          **
  59          ** Note: EV96100A board with irq jumper set on 'VxWorks'
  60          ** for EV96100 compatibility.
  61          */
  62
  63         pci_for_each_dev(dev) {
  64                 if (dev->bus->number != 0)
  65                         return;
  66
  67                 slot = PCI_SLOT(dev->devfn);
  68                 pci_read_config_dword(dev, PCI_SUBSYSTEM_VENDOR_ID,
  69                                       &vendor);
  70
  71 #ifdef DEBUG
  72                 printk("devfn %x, slot %d devid %x\n",
  73                        dev->devfn, slot, gt_devid);
  74 #endif
  75
  76                 /* fixup irq line based on slot # */
  77                 if (slot == 8) {
  78                         dev->irq = 5;
  79                         pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
  80                                               dev->irq);
  81                 } else if (slot == 9) {
  82                         dev->irq = 2;
  83                         pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
  84                                               dev->irq);
  85                 }
  86         }
  87 }
  88 unsigned int pcibios_assign_all_busses(void)
  89 {
  90         return 0;
  91 }