Eric Lee / smarc-fsl-linux-kernel

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arch/mips/pci/fixup-rc32434.c 2.48 KB
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73b4390fb   Ralf Baechle   [MIPS] Routerboar... 
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  /*
   * Copyright 2001 MontaVista Software Inc.
   * Author: MontaVista Software, Inc.
   *         	stevel@mvista.com or source@mvista.com
   *
   *  This program is free software; you can redistribute  it and/or modify it
   *  under  the terms of  the GNU General  Public License as published by the
   *  Free Software Foundation;  either version 2 of the  License, or (at your
   *  option) any later version.
   *
   *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
   *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
   *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
   *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
   *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
   *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
   *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   *  You should have received a copy of the  GNU General Public License along
   *  with this program; if not, write  to the Free Software Foundation, Inc.,
   *  675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #include <linux/types.h>
  #include <linux/pci.h>
  #include <linux/kernel.h>
  #include <linux/init.h>
  
  #include <asm/mach-rc32434/rc32434.h>
052ac71c4   Adrian Bunk   MIPS: RB532: Fix ... 
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  #include <asm/mach-rc32434/irq.h>
73b4390fb   Ralf Baechle   [MIPS] Routerboar... 
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  static int __devinitdata irq_map[2][12] = {
  	{0, 0, 2, 3, 2, 3, 0, 0, 0, 0, 0, 1},
  	{0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3}
  };
  
  int __devinit pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  {
  	int irq = 0;
  
  	if (dev->bus->number < 2 && PCI_SLOT(dev->devfn) < 12)
  		irq = irq_map[dev->bus->number][PCI_SLOT(dev->devfn)];
  
  	return irq + GROUP4_IRQ_BASE + 4;
  }
  
  static void rc32434_pci_early_fixup(struct pci_dev *dev)
  {
  	if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) {
  		/* disable prefetched memory range */
  		pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0);
  		pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10);
  
  		pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
  	}
  }
  
  /*
   * The fixup applies to both the IDT and VIA devices present on the board
   */
  DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, rc32434_pci_early_fixup);
  
  /* Do platform specific device initialization at pci_enable_device() time */
  int pcibios_plat_dev_init(struct pci_dev *dev)
  {
  	return 0;
  }