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 #include <bcm47xx.h>
  29
  30 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  31 {
  32         return 0;
  33 }
  34
  35 int pcibios_plat_dev_init(struct pci_dev *dev)
  36 {
  37 #ifdef CONFIG_BCM47XX_SSB
  38         int res;
  39         u8 slot, pin;
  40
  41         if (bcm47xx_bus_type !=  BCM47XX_BUS_TYPE_SSB)
  42                 return 0;
  43
  44         res = ssb_pcibios_plat_dev_init(dev);
  45         if (res < 0) {
  46                 printk(KERN_ALERT "PCI: Failed to init device %s\n",
  47                        pci_name(dev));
  48                 return res;
  49         }
  50
  51         pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
  52         slot = PCI_SLOT(dev->devfn);
  53         res = ssb_pcibios_map_irq(dev, slot, pin);
  54
  55         /* IRQ-0 and IRQ-1 are software interrupts. */
  56         if (res < 2) {
  57                 printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n",
  58                        pci_name(dev));
  59                 return res;
  60         }
  61
  62         dev->irq = res;
  63 #endif
  64         return 0;
  65 }