cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

fixup-rbtx4927.c (2366B)


      1/*
      2 *
      3 * BRIEF MODULE DESCRIPTION
      4 *      Board specific pci fixups for the Toshiba rbtx4927
      5 *
      6 * Copyright 2001 MontaVista Software Inc.
      7 * Author: MontaVista Software, Inc.
      8 *              ppopov@mvista.com or source@mvista.com
      9 *
     10 * Copyright (C) 2000-2001 Toshiba Corporation
     11 *
     12 * Copyright (C) 2004 MontaVista Software Inc.
     13 * Author: Manish Lachwani (mlachwani@mvista.com)
     14 *
     15 *  This program is free software; you can redistribute  it and/or modify it
     16 *  under  the terms of  the GNU General  Public License as published by the
     17 *  Free Software Foundation;  either version 2 of the  License, or (at your
     18 *  option) any later version.
     19 *
     20 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
     21 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
     22 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
     23 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
     24 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
     26 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     27 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
     28 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30 *
     31 *  You should have received a copy of the  GNU General Public License along
     32 *  with this program; if not, write  to the Free Software Foundation, Inc.,
     33 *  675 Mass Ave, Cambridge, MA 02139, USA.
     34 */
     35#include <linux/types.h>
     36#include <asm/txx9/pci.h>
     37#include <asm/txx9/rbtx4927.h>
     38
     39int rbtx4927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
     40{
     41	unsigned char irq = pin;
     42
     43	/* IRQ rotation */
     44	irq--;			/* 0-3 */
     45	if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
     46		/* PCI CardSlot (IDSEL=A23) */
     47		/* PCIA => PCIA */
     48		irq = (irq + 0 + slot) % 4;
     49	} else {
     50		/* PCI Backplane */
     51		if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
     52			irq = (irq + 33 - slot) % 4;
     53		else
     54			irq = (irq + 3 + slot) % 4;
     55	}
     56	irq++;	/* 1-4 */
     57
     58	switch (irq) {
     59	case 1:
     60		irq = RBTX4927_IRQ_IOC_PCIA;
     61		break;
     62	case 2:
     63		irq = RBTX4927_IRQ_IOC_PCIB;
     64		break;
     65	case 3:
     66		irq = RBTX4927_IRQ_IOC_PCIC;
     67		break;
     68	case 4:
     69		irq = RBTX4927_IRQ_IOC_PCID;
     70		break;
     71	}
     72	return irq;
     73}