74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* Board specific pci fixups for the Toshiba rbtx4927
|
|
*
|
|
* Copyright 2001 MontaVista Software Inc.
|
|
* Author: MontaVista Software, Inc.
|
|
* ppopov@mvista.com or source@mvista.com
|
|
*
|
|
* Copyright (C) 2000-2001 Toshiba Corporation
|
|
*
|
|
* Copyright (C) 2004 MontaVista Software Inc.
|
|
* Author: Manish Lachwani (mlachwani@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 <asm/txx9/pci.h>
|
|
#include <asm/txx9/rbtx4927.h>
|
|
|
|
int rbtx4927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
unsigned char irq = pin;
|
|
|
|
/* IRQ rotation */
|
|
irq--; /* 0-3 */
|
|
if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
|
|
/* PCI CardSlot (IDSEL=A23) */
|
|
/* PCIA => PCIA */
|
|
irq = (irq + 0 + slot) % 4;
|
|
} else {
|
|
/* PCI Backplane */
|
|
if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
|
|
irq = (irq + 33 - slot) % 4;
|
|
else
|
|
irq = (irq + 3 + slot) % 4;
|
|
}
|
|
irq++; /* 1-4 */
|
|
|
|
switch (irq) {
|
|
case 1:
|
|
irq = RBTX4927_IRQ_IOC_PCIA;
|
|
break;
|
|
case 2:
|
|
irq = RBTX4927_IRQ_IOC_PCIB;
|
|
break;
|
|
case 3:
|
|
irq = RBTX4927_IRQ_IOC_PCIC;
|
|
break;
|
|
case 4:
|
|
irq = RBTX4927_IRQ_IOC_PCID;
|
|
break;
|
|
}
|
|
return irq;
|
|
}
|