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73b4390f RB |
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> | |
73b4390f RB |
30 | |
31 | #include <asm/mach-rc32434/rc32434.h> | |
052ac71c | 32 | #include <asm/mach-rc32434/irq.h> |
73b4390f | 33 | |
28eb0e46 | 34 | static int irq_map[2][12] = { |
73b4390f RB |
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 | ||
28eb0e46 | 39 | int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
73b4390f RB |
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 | ||
28eb0e46 | 49 | static void rc32434_pci_early_fixup(struct pci_dev *dev) |
73b4390f RB |
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 | } |