| 1 | /* |
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| 2 | * Copyright 2001 MontaVista Software Inc. |
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| 3 | * Author: MontaVista Software, Inc. |
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| 4 | * stevel@mvista.com or source@mvista.com |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify it |
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| 7 | * under the terms of the GNU General Public License as published by the |
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| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
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| 9 | * option) any later version. |
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| 10 | * |
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| 11 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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| 12 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 13 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
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| 14 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 15 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 16 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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| 17 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
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| 18 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 19 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 20 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 21 | * |
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| 22 | * You should have received a copy of the GNU General Public License along |
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| 23 | * with this program; if not, write to the Free Software Foundation, Inc., |
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| 24 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 25 | */ |
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| 26 | |
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| 27 | #include <linux/types.h> |
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| 28 | #include <linux/pci.h> |
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| 29 | #include <linux/kernel.h> |
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| 30 | |
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| 31 | #include <asm/mach-rc32434/rc32434.h> |
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| 32 | #include <asm/mach-rc32434/irq.h> |
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| 33 | |
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| 34 | static int irq_map[2][12] = { |
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| 35 | {0, 0, 2, 3, 2, 3, 0, 0, 0, 0, 0, 1}, |
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| 36 | {0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3} |
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| 37 | }; |
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| 38 | |
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| 39 | int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
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| 40 | { |
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| 41 | int irq = 0; |
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| 42 | |
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| 43 | if (dev->bus->number < 2 && PCI_SLOT(dev->devfn) < 12) |
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| 44 | irq = irq_map[dev->bus->number][PCI_SLOT(dev->devfn)]; |
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| 45 | |
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| 46 | return irq + GROUP4_IRQ_BASE + 4; |
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| 47 | } |
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| 48 | |
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| 49 | static void rc32434_pci_early_fixup(struct pci_dev *dev) |
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| 50 | { |
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| 51 | if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) { |
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| 52 | /* disable prefetched memory range */ |
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| 53 | pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, val: 0); |
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| 54 | pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, val: 0x10); |
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| 55 | |
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| 56 | pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, val: 4); |
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| 57 | } |
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| 58 | } |
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| 59 | |
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| 60 | /* |
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| 61 | * The fixup applies to both the IDT and VIA devices present on the board |
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| 62 | */ |
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| 63 | DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, rc32434_pci_early_fixup); |
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| 64 | |
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| 65 | /* Do platform specific device initialization at pci_enable_device() time */ |
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| 66 | int pcibios_plat_dev_init(struct pci_dev *dev) |
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| 67 | { |
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| 68 | return 0; |
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| 69 | } |
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| 70 | |
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