| Ralf Baechle | 73b4390 | 2008-07-16 16:12:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2001 MontaVista Software Inc. |
| 3 | * Author: MontaVista Software, Inc. |
| 4 | * stevel@mvista.com or source@mvista.com |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | * |
| 11 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 12 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 14 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 15 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 16 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 17 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 18 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 19 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 20 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License along |
| 23 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 24 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | */ |
| 26 | |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/pci.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/init.h> |
| 31 | |
| 32 | #include <asm/mach-rc32434/rc32434.h> |
| 33 | |
| 34 | static int __devinitdata irq_map[2][12] = { |
| 35 | {0, 0, 2, 3, 2, 3, 0, 0, 0, 0, 0, 1}, |
| 36 | {0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3} |
| 37 | }; |
| 38 | |
| 39 | int __devinit pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
| 40 | { |
| 41 | int irq = 0; |
| 42 | |
| 43 | if (dev->bus->number < 2 && PCI_SLOT(dev->devfn) < 12) |
| 44 | irq = irq_map[dev->bus->number][PCI_SLOT(dev->devfn)]; |
| 45 | |
| 46 | return irq + GROUP4_IRQ_BASE + 4; |
| 47 | } |
| 48 | |
| 49 | static void rc32434_pci_early_fixup(struct pci_dev *dev) |
| 50 | { |
| 51 | if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) { |
| 52 | /* disable prefetched memory range */ |
| 53 | pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0); |
| 54 | pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10); |
| 55 | |
| 56 | pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | /* |
| 61 | * The fixup applies to both the IDT and VIA devices present on the board |
| 62 | */ |
| 63 | DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, rc32434_pci_early_fixup); |
| 64 | |
| 65 | /* Do platform specific device initialization at pci_enable_device() time */ |
| 66 | int pcibios_plat_dev_init(struct pci_dev *dev) |
| 67 | { |
| 68 | return 0; |
| 69 | } |