release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/pci/pci-bcm47xx.c

   1 /*
   2  *  Copyright (C) 2008 Aurelien Jarno <aurelien@aurel32.net>
   3  *
   4  *  This program is free software; you can redistribute  it and/or modify it
   5  *  under  the terms of  the GNU General  Public License as published by the
   6  *  Free Software Foundation;  either version 2 of the  License, or (at your
   7  *  option) any later version.
   8  *
   9  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  10  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  11  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  12  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  13  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  14  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  15  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  16  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  17  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  18  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  19  *
  20  *  You should have received a copy of the  GNU General Public License along
  21  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  22  *  675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/types.h>
  26 #include <linux/pci.h>
  27 #include <linux/ssb/ssb.h>
  28
  29 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  30 {
  31         return 0;
  32 }
  33
  34 int pcibios_plat_dev_init(struct pci_dev *dev)
  35 {
  36         int res;
  37         u8 slot, pin;
  38
  39         res = ssb_pcibios_plat_dev_init(dev);
  40         if (res < 0) {
  41                 printk(KERN_ALERT "PCI: Failed to init device %s\n",
  42                        pci_name(dev));
  43                 return res;
  44         }
  45
  46         pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
  47         slot = PCI_SLOT(dev->devfn);
  48         res = ssb_pcibios_map_irq(dev, slot, pin);
  49
  50         /* IRQ-0 and IRQ-1 are software interrupts. */
  51         if (res < 2) {
  52                 printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n",
  53                        pci_name(dev));
  54                 return res;
  55         }
  56
  57         dev->irq = res;
  58         return 0;
  59 }