fixup-rc32434.c
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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 <asm/mach-rc32434/rc32434.h>
#include <asm/mach-rc32434/irq.h>
static int 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 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;
}