Viewing file:  pci_fixup.c (3.84 KB) -rw-r--r--
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/*
*
* BRIEF MODULE DESCRIPTION
* Globespan IVR board-specific pci fixups.
*
* Copyright 2000 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#ifdef CONFIG_PCI
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/it8172/it8172.h>
#include <asm/it8172/it8172_pci.h>
#include <asm/it8172/it8172_int.h>
void __init board_int_line_fixup(struct pci_dev *dev)
{
unsigned int slot, func;
unsigned char pin;
const int internal_func_irqs[7] = {
IT8172_AC97_IRQ,
IT8172_DMA_IRQ,
IT8172_CDMA_IRQ,
IT8172_USB_IRQ,
IT8172_BRIDGE_MASTER_IRQ,
IT8172_IDE_IRQ,
IT8172_MC68K_IRQ
};
#ifdef DEBUG
printk("board_int_line_fixup bus %d\n", dev->bus->number);
#endif
if (dev->bus->number != 0)
return;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
#ifdef DEBUG
pci_read_config_dword(dev, PCI_SUBSYSTEM_VENDOR_ID, &vendor);
#endif
slot = PCI_SLOT(dev->devfn);
func = PCI_FUNC(dev->devfn);
switch (slot) {
case 0x01:
/*
* Internal device 1 is actually 7 different internal
* devices on the IT8172G (a multi-function device).
*/
if (func < 7)
dev->irq = internal_func_irqs[func];
break;
case 0x11:
switch (pin) {
case 0: /* pin A, hardware bug */
case 1: /* pin A */
dev->irq = IT8172_PCI_INTC_IRQ;
break;
case 2: /* pin B */
dev->irq = IT8172_PCI_INTD_IRQ;
break;
case 3: /* pin C */
dev->irq = IT8172_PCI_INTA_IRQ;
break;
case 4: /* pin D */
dev->irq = IT8172_PCI_INTB_IRQ;
break;
default:
dev->irq = 0xff;
break;
}
break;
case 0x13:
switch (pin) {
case 0: /* pin A, hardware bug */
case 1: /* pin A */
dev->irq = IT8172_PCI_INTA_IRQ;
break;
case 2: /* pin B */
dev->irq = IT8172_PCI_INTB_IRQ;
break;
case 3: /* pin C */
dev->irq = IT8172_PCI_INTC_IRQ;
break;
case 4: /* pin D */
dev->irq = IT8172_PCI_INTD_IRQ;
break;
default:
dev->irq = 0xff;
break;
}
break;
default:
return;
}
#ifdef DEBUG
printk("irq fixup: slot %d, vendor %x, int line %d, int number %d\n",
slot, vendor, pin, dev->irq);
#endif
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}
struct pci_fixup pcibios_fixups[] = {
{ PCI_FIXUP_HEADER, PCI_ANY_ID, PCI_ANY_ID, board_int_line_fixup },
{ 0 }
};
#endif
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