11da177e4SLinus Torvalds /*
21da177e4SLinus Torvalds *
31da177e4SLinus Torvalds * BRIEF MODULE DESCRIPTION
41da177e4SLinus Torvalds * Board specific pci fixups for the Toshiba rbtx4927
51da177e4SLinus Torvalds *
61da177e4SLinus Torvalds * Copyright 2001 MontaVista Software Inc.
71da177e4SLinus Torvalds * Author: MontaVista Software, Inc.
81da177e4SLinus Torvalds * ppopov@mvista.com or source@mvista.com
91da177e4SLinus Torvalds *
101da177e4SLinus Torvalds * Copyright (C) 2000-2001 Toshiba Corporation
111da177e4SLinus Torvalds *
121da177e4SLinus Torvalds * Copyright (C) 2004 MontaVista Software Inc.
131da177e4SLinus Torvalds * Author: Manish Lachwani (mlachwani@mvista.com)
141da177e4SLinus Torvalds *
151da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify it
161da177e4SLinus Torvalds * under the terms of the GNU General Public License as published by the
171da177e4SLinus Torvalds * Free Software Foundation; either version 2 of the License, or (at your
181da177e4SLinus Torvalds * option) any later version.
191da177e4SLinus Torvalds *
201da177e4SLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
211da177e4SLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
221da177e4SLinus Torvalds * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
231da177e4SLinus Torvalds * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
241da177e4SLinus Torvalds * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
251da177e4SLinus Torvalds * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
261da177e4SLinus Torvalds * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
271da177e4SLinus Torvalds * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
281da177e4SLinus Torvalds * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
291da177e4SLinus Torvalds * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
301da177e4SLinus Torvalds *
311da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License along
321da177e4SLinus Torvalds * with this program; if not, write to the Free Software Foundation, Inc.,
331da177e4SLinus Torvalds * 675 Mass Ave, Cambridge, MA 02139, USA.
341da177e4SLinus Torvalds */
351da177e4SLinus Torvalds #include <linux/types.h>
3689d63fe1SAtsushi Nemoto #include <asm/txx9/pci.h>
3789d63fe1SAtsushi Nemoto #include <asm/txx9/rbtx4927.h>
381da177e4SLinus Torvalds
rbtx4927_pci_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)3919a8d6b7SLorenzo Pieralisi int rbtx4927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
401da177e4SLinus Torvalds {
4189d63fe1SAtsushi Nemoto unsigned char irq = pin;
421da177e4SLinus Torvalds
4389d63fe1SAtsushi Nemoto /* IRQ rotation */
4489d63fe1SAtsushi Nemoto irq--; /* 0-3 */
4589d63fe1SAtsushi Nemoto if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
4689d63fe1SAtsushi Nemoto /* PCI CardSlot (IDSEL=A23) */
4789d63fe1SAtsushi Nemoto /* PCIA => PCIA */
4889d63fe1SAtsushi Nemoto irq = (irq + 0 + slot) % 4;
4989d63fe1SAtsushi Nemoto } else {
5089d63fe1SAtsushi Nemoto /* PCI Backplane */
5189d63fe1SAtsushi Nemoto if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
5289d63fe1SAtsushi Nemoto irq = (irq + 33 - slot) % 4;
531da177e4SLinus Torvalds else
5489d63fe1SAtsushi Nemoto irq = (irq + 3 + slot) % 4;
5589d63fe1SAtsushi Nemoto }
5689d63fe1SAtsushi Nemoto irq++; /* 1-4 */
571da177e4SLinus Torvalds
5889d63fe1SAtsushi Nemoto switch (irq) {
5989d63fe1SAtsushi Nemoto case 1:
6089d63fe1SAtsushi Nemoto irq = RBTX4927_IRQ_IOC_PCIA;
6189d63fe1SAtsushi Nemoto break;
6289d63fe1SAtsushi Nemoto case 2:
6389d63fe1SAtsushi Nemoto irq = RBTX4927_IRQ_IOC_PCIB;
6489d63fe1SAtsushi Nemoto break;
6589d63fe1SAtsushi Nemoto case 3:
6689d63fe1SAtsushi Nemoto irq = RBTX4927_IRQ_IOC_PCIC;
6789d63fe1SAtsushi Nemoto break;
6889d63fe1SAtsushi Nemoto case 4:
6989d63fe1SAtsushi Nemoto irq = RBTX4927_IRQ_IOC_PCID;
7089d63fe1SAtsushi Nemoto break;
7189d63fe1SAtsushi Nemoto }
721da177e4SLinus Torvalds return irq;
731da177e4SLinus Torvalds }
74