forked from Minki/linux
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
|
/*
|
||
|
|
*
|
||
|
|
* BRIEF MODULE DESCRIPTION
|
||
|
|
* Board specific pci fixups.
|
||
|
|
*
|
||
|
|
* Copyright 2001 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/types.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
|
||
|
|
#include <asm/jmr3927/jmr3927.h>
|
||
|
|
|
||
|
|
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
||
|
|
{
|
||
|
|
unsigned char irq = pin;
|
||
|
|
|
||
|
|
/* IRQ rotation (PICMG) */
|
||
|
|
irq--; /* 0-3 */
|
||
|
|
if (dev->bus->parent == NULL &&
|
||
|
|
slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
|
||
|
|
/* PCI CardSlot (IDSEL=A23, DevNu=12) */
|
||
|
|
/* PCIA => PCIC (IDSEL=A23) */
|
||
|
|
/* NOTE: JMR3927 JP1 must be set to OPEN */
|
||
|
|
irq = (irq + 2) % 4;
|
||
|
|
} else if (dev->bus->parent == NULL &&
|
||
|
|
slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
|
||
|
|
/* PCI CardSlot (IDSEL=A22, DevNu=11) */
|
||
|
|
/* PCIA => PCIA (IDSEL=A22) */
|
||
|
|
/* NOTE: JMR3927 JP1 must be set to OPEN */
|
||
|
|
irq = (irq + 0) % 4;
|
||
|
|
} else {
|
||
|
|
/* PCI Backplane */
|
||
|
|
irq = (irq + 3 + slot) % 4;
|
||
|
|
}
|
||
|
|
irq++; /* 1-4 */
|
||
|
|
|
||
|
|
switch (irq) {
|
||
|
|
case 1:
|
||
|
|
irq = JMR3927_IRQ_IOC_PCIA;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
// wrong for backplane irq = JMR3927_IRQ_IOC_PCIB;
|
||
|
|
irq = JMR3927_IRQ_IOC_PCID;
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
irq = JMR3927_IRQ_IOC_PCIC;
|
||
|
|
break;
|
||
|
|
case 4:
|
||
|
|
// wrong for backplane irq = JMR3927_IRQ_IOC_PCID;
|
||
|
|
irq = JMR3927_IRQ_IOC_PCIB;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */
|
||
|
|
if (dev->bus->parent == NULL &&
|
||
|
|
slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) {
|
||
|
|
extern int jmr3927_ether1_irq;
|
||
|
|
/* check this irq line was reserved for ether1 */
|
||
|
|
if (jmr3927_ether1_irq != JMR3927_IRQ_ETHER0)
|
||
|
|
irq = JMR3927_IRQ_ETHER0;
|
||
|
|
else
|
||
|
|
irq = 0; /* disable */
|
||
|
|
}
|
||
|
|
return irq;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Do platform specific device initialization at pci_enable_device() time */
|
||
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
||
|
|
{
|
||
|
|
/* SMSC SLC90E66 IDE uses irq 14, 15 (default) */
|
||
|
|
if (!(dev->vendor == PCI_VENDOR_ID_EFAR &&
|
||
|
|
dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1))
|
||
|
|
return pci_get_irq(dev, pin);
|
||
|
|
|
||
|
|
dev->irq = irq;
|
||
|
|
}
|