42a3b4f25a
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
140 lines
4.2 KiB
C
140 lines
4.2 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 <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/tx4927/tx4927.h>
|
|
#include <asm/tx4927/tx4927_pci.h>
|
|
|
|
#undef DEBUG
|
|
#ifdef DEBUG
|
|
#define DBG(x...) printk(x)
|
|
#else
|
|
#define DBG(x...)
|
|
#endif
|
|
|
|
/* look up table for backplane pci irq for slots 17-20 by pin # */
|
|
static unsigned char backplane_pci_irq[4][4] = {
|
|
/* PJ6 SLOT: 17, PIN: 1 */ {TX4927_IRQ_IOC_PCIA,
|
|
/* PJ6 SLOT: 17, PIN: 2 */
|
|
TX4927_IRQ_IOC_PCIB,
|
|
/* PJ6 SLOT: 17, PIN: 3 */
|
|
TX4927_IRQ_IOC_PCIC,
|
|
/* PJ6 SLOT: 17, PIN: 4 */
|
|
TX4927_IRQ_IOC_PCID},
|
|
/* SB SLOT: 18, PIN: 1 */ {TX4927_IRQ_IOC_PCIB,
|
|
/* SB SLOT: 18, PIN: 2 */
|
|
TX4927_IRQ_IOC_PCIC,
|
|
/* SB SLOT: 18, PIN: 3 */
|
|
TX4927_IRQ_IOC_PCID,
|
|
/* SB SLOT: 18, PIN: 4 */
|
|
TX4927_IRQ_IOC_PCIA},
|
|
/* PJ5 SLOT: 19, PIN: 1 */ {TX4927_IRQ_IOC_PCIC,
|
|
/* PJ5 SLOT: 19, PIN: 2 */
|
|
TX4927_IRQ_IOC_PCID,
|
|
/* PJ5 SLOT: 19, PIN: 3 */
|
|
TX4927_IRQ_IOC_PCIA,
|
|
/* PJ5 SLOT: 19, PIN: 4 */
|
|
TX4927_IRQ_IOC_PCIB},
|
|
/* PJ4 SLOT: 20, PIN: 1 */ {TX4927_IRQ_IOC_PCID,
|
|
/* PJ4 SLOT: 20, PIN: 2 */
|
|
TX4927_IRQ_IOC_PCIA,
|
|
/* PJ4 SLOT: 20, PIN: 3 */
|
|
TX4927_IRQ_IOC_PCIB,
|
|
/* PJ4 SLOT: 20, PIN: 4 */
|
|
TX4927_IRQ_IOC_PCIC}
|
|
};
|
|
|
|
int pci_get_irq(struct pci_dev *dev, int pin)
|
|
{
|
|
unsigned char irq = pin;
|
|
|
|
DBG("pci_get_irq: pin is %d\n", pin);
|
|
/* IRQ rotation */
|
|
irq--; /* 0-3 */
|
|
if (dev->bus->parent == NULL &&
|
|
PCI_SLOT(dev->devfn) == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
|
|
printk("Onboard PCI_SLOT(dev->devfn) is %d\n",
|
|
PCI_SLOT(dev->devfn));
|
|
/* IDSEL=A23 is tx4927 onboard pci slot */
|
|
irq = (irq + PCI_SLOT(dev->devfn)) % 4;
|
|
irq++; /* 1-4 */
|
|
DBG("irq is now %d\n", irq);
|
|
|
|
switch (irq) {
|
|
case 1:
|
|
irq = TX4927_IRQ_IOC_PCIA;
|
|
break;
|
|
case 2:
|
|
irq = TX4927_IRQ_IOC_PCIB;
|
|
break;
|
|
case 3:
|
|
irq = TX4927_IRQ_IOC_PCIC;
|
|
break;
|
|
case 4:
|
|
irq = TX4927_IRQ_IOC_PCID;
|
|
break;
|
|
}
|
|
} else {
|
|
/* PCI Backplane */
|
|
DBG("PCI Backplane PCI_SLOT(dev->devfn) is %d\n",
|
|
PCI_SLOT(dev->devfn));
|
|
irq = backplane_pci_irq[PCI_SLOT(dev->devfn) - 17][irq];
|
|
}
|
|
DBG("assigned irq %d\n", irq);
|
|
return irq;
|
|
}
|
|
|
|
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
unsigned char irq;
|
|
|
|
printk("PCI Setup for pin %d \n", pin);
|
|
|
|
if (dev->device == 0x9130) /* IDE */
|
|
irq = 14;
|
|
else
|
|
irq = pci_get_irq(dev, pin);
|
|
|
|
return irq;
|
|
}
|
|
|
|
/* Do platform specific device initialization at pci_enable_device() time */
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
return 0;
|
|
}
|