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 <linux/bcma/bcma.h>
  29 #include <bcm47xx.h>
  30
  31 int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  32 {
  33         return 0;
  34 }
  35
  36 #ifdef CONFIG_BCM47XX_SSB
  37 static int bcm47xx_pcibios_plat_dev_init_ssb(struct pci_dev *dev)
  38 {
  39         int res;
  40         u8 slot, pin;
  41
  42         res = ssb_pcibios_plat_dev_init(dev);
  43         if (res < 0) {
  44                 pci_alert(dev, "PCI: Failed to init device\n");
  45                 return res;
  46         }
  47
  48         pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
  49         slot = PCI_SLOT(dev->devfn);
  50         res = ssb_pcibios_map_irq(dev, slot, pin);
  51
  52         /* IRQ-0 and IRQ-1 are software interrupts. */
  53         if (res < 2) {
  54                 pci_alert(dev, "PCI: Failed to map IRQ of device\n");
  55                 return res;
  56         }
  57
  58         dev->irq = res;
  59         return 0;
  60 }
  61 #endif
  62
  63 #ifdef CONFIG_BCM47XX_BCMA
  64 static int bcm47xx_pcibios_plat_dev_init_bcma(struct pci_dev *dev)
  65 {
  66         int res;
  67
  68         res = bcma_core_pci_plat_dev_init(dev);
  69         if (res < 0) {
  70                 pci_alert(dev, "PCI: Failed to init device\n");
  71                 return res;
  72         }
  73
  74         res = bcma_core_pci_pcibios_map_irq(dev);
  75
  76         /* IRQ-0 and IRQ-1 are software interrupts. */
  77         if (res < 2) {
  78                 pci_alert(dev, "PCI: Failed to map IRQ of device\n");
  79                 return res;
  80         }
  81
  82         dev->irq = res;
  83         return 0;
  84 }
  85 #endif
  86
  87 int pcibios_plat_dev_init(struct pci_dev *dev)
  88 {
  89 #ifdef CONFIG_BCM47XX_SSB
  90         if (bcm47xx_bus_type ==  BCM47XX_BUS_TYPE_SSB)
  91                 return bcm47xx_pcibios_plat_dev_init_ssb(dev);
  92 #endif
  93 #ifdef CONFIG_BCM47XX_BCMA
  94         if  (bcm47xx_bus_type ==  BCM47XX_BUS_TYPE_BCMA)
  95                 return bcm47xx_pcibios_plat_dev_init_bcma(dev);
  96 #endif
  97         return 0;
  98 }