1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2001 MontaVista Software Inc.
3*4882a593Smuzhiyun * Author: MontaVista Software, Inc.
4*4882a593Smuzhiyun * stevel@mvista.com or source@mvista.com
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it
7*4882a593Smuzhiyun * under the terms of the GNU General Public License as published by the
8*4882a593Smuzhiyun * Free Software Foundation; either version 2 of the License, or (at your
9*4882a593Smuzhiyun * option) any later version.
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
12*4882a593Smuzhiyun * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
13*4882a593Smuzhiyun * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
14*4882a593Smuzhiyun * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
15*4882a593Smuzhiyun * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
16*4882a593Smuzhiyun * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
17*4882a593Smuzhiyun * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
18*4882a593Smuzhiyun * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
19*4882a593Smuzhiyun * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
20*4882a593Smuzhiyun * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21*4882a593Smuzhiyun *
22*4882a593Smuzhiyun * You should have received a copy of the GNU General Public License along
23*4882a593Smuzhiyun * with this program; if not, write to the Free Software Foundation, Inc.,
24*4882a593Smuzhiyun * 675 Mass Ave, Cambridge, MA 02139, USA.
25*4882a593Smuzhiyun */
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun #include <linux/types.h>
28*4882a593Smuzhiyun #include <linux/pci.h>
29*4882a593Smuzhiyun #include <linux/kernel.h>
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #include <asm/mach-rc32434/rc32434.h>
32*4882a593Smuzhiyun #include <asm/mach-rc32434/irq.h>
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun static int irq_map[2][12] = {
35*4882a593Smuzhiyun {0, 0, 2, 3, 2, 3, 0, 0, 0, 0, 0, 1},
36*4882a593Smuzhiyun {0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3}
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
pcibios_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)39*4882a593Smuzhiyun int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun int irq = 0;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun if (dev->bus->number < 2 && PCI_SLOT(dev->devfn) < 12)
44*4882a593Smuzhiyun irq = irq_map[dev->bus->number][PCI_SLOT(dev->devfn)];
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun return irq + GROUP4_IRQ_BASE + 4;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
rc32434_pci_early_fixup(struct pci_dev * dev)49*4882a593Smuzhiyun static void rc32434_pci_early_fixup(struct pci_dev *dev)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) {
52*4882a593Smuzhiyun /* disable prefetched memory range */
53*4882a593Smuzhiyun pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0);
54*4882a593Smuzhiyun pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun /*
61*4882a593Smuzhiyun * The fixup applies to both the IDT and VIA devices present on the board
62*4882a593Smuzhiyun */
63*4882a593Smuzhiyun DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, rc32434_pci_early_fixup);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun /* Do platform specific device initialization at pci_enable_device() time */
pcibios_plat_dev_init(struct pci_dev * dev)66*4882a593Smuzhiyun int pcibios_plat_dev_init(struct pci_dev *dev)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun return 0;
69*4882a593Smuzhiyun }
70