2024-09-09 08:52:07 +00:00
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/*
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* Copyright 2001 MontaVista Software Inc.
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* Author: MontaVista Software, Inc.
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* stevel@mvista.com or source@mvista.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <asm/mach-rc32434/rc32434.h>
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#include <asm/mach-rc32434/irq.h>
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2024-09-09 08:57:42 +00:00
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static int irq_map[2][12] = {
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2024-09-09 08:52:07 +00:00
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{0, 0, 2, 3, 2, 3, 0, 0, 0, 0, 0, 1},
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{0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3}
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};
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2024-09-09 08:57:42 +00:00
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int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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2024-09-09 08:52:07 +00:00
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{
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int irq = 0;
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if (dev->bus->number < 2 && PCI_SLOT(dev->devfn) < 12)
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irq = irq_map[dev->bus->number][PCI_SLOT(dev->devfn)];
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return irq + GROUP4_IRQ_BASE + 4;
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}
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static void rc32434_pci_early_fixup(struct pci_dev *dev)
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{
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if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) {
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/* disable prefetched memory range */
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pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0);
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pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10);
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pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
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}
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}
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/*
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* The fixup applies to both the IDT and VIA devices present on the board
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*/
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DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, rc32434_pci_early_fixup);
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/* Do platform specific device initialization at pci_enable_device() time */
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int pcibios_plat_dev_init(struct pci_dev *dev)
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{
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return 0;
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}
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