3 * BRIEF MODULE DESCRIPTION
4 * Board specific pci fixups.
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
30 #include <linux/config.h>
34 #include <linux/types.h>
35 #include <linux/pci.h>
36 #include <linux/kernel.h>
37 #include <linux/init.h>
39 #include <asm/jmr3927/jmr3927.h>
43 #define DBG(x...) printk(x)
48 void __init pcibios_fixup_resources(struct pci_dev *dev)
50 /* will need to fixup IO resources */
53 void __init pcibios_fixup(void)
55 /* nothing to do here */
58 int pci_get_irq(struct pci_dev *dev, int pin)
60 unsigned char irq = pin;
62 /* IRQ rotation (PICMG) */
64 if (dev->bus->parent == NULL &&
65 PCI_SLOT(dev->devfn) == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
66 /* PCI CardSlot (IDSEL=A23, DevNu=12) */
67 /* PCIA => PCIC (IDSEL=A23) */
68 /* NOTE: JMR3927 JP1 must be set to OPEN */
70 } else if (dev->bus->parent == NULL &&
71 PCI_SLOT(dev->devfn) == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
72 /* PCI CardSlot (IDSEL=A22, DevNu=11) */
73 /* PCIA => PCIA (IDSEL=A22) */
74 /* NOTE: JMR3927 JP1 must be set to OPEN */
78 irq = (irq + 3 + PCI_SLOT(dev->devfn)) % 4;
80 for (bus = dev->bus; bus->parent != NULL; bus = bus->parent) {
81 irq = (irq + 3 + PCI_SLOT(bus->self->devfn)) % 4;
89 irq = JMR3927_IRQ_IOC_PCIA;
92 // wrong for backplane irq = JMR3927_IRQ_IOC_PCIB;
93 irq = JMR3927_IRQ_IOC_PCID;
96 irq = JMR3927_IRQ_IOC_PCIC;
99 // wrong for backplane irq = JMR3927_IRQ_IOC_PCID;
100 irq = JMR3927_IRQ_IOC_PCIB;
104 /* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */
105 if (dev->bus->parent == NULL &&
106 PCI_SLOT(dev->devfn) == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) {
107 extern int jmr3927_ether1_irq;
108 /* check this irq line was reserved for ether1 */
109 if (jmr3927_ether1_irq != JMR3927_IRQ_ETHER0)
110 irq = JMR3927_IRQ_ETHER0;
112 irq = 0; /* disable */
117 void __init pcibios_fixup_irqs(void)
122 pci_for_each_dev(dev) {
123 pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq);
127 /* SMSC SLC90E66 IDE uses irq 14, 15 (default) */
128 if (!(dev->vendor == PCI_VENDOR_ID_EFAR &&
129 dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1)) {
130 irq = pci_get_irq(dev, irq);
131 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
134 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
135 printk(KERN_INFO "PCI: %02x:%02x IRQ %02x\n",
136 dev->bus->number, dev->devfn, irq);