arch/mips/pci/fixup-ddb5477.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      Board specific pci fixups.
   5  *
   6  * Copyright 2001, 2002, 2003 MontaVista Software Inc.
   7  * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
   8  *
   9  *  This program is free software; you can redistribute  it and/or modify it
  10  *  under  the terms of  the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the  License, or (at your
  12  *  option) any later version.
  13  *
  14  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  15  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  16  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  17  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  18  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  20  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  21  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  22  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  *  You should have received a copy of the  GNU General Public License along
  26  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  27  *  675 Mass Ave, Cambridge, MA 02139, USA.
  28  */
  29
  30 #include <linux/types.h>
  31 #include <linux/pci.h>
  32 #include <linux/kernel.h>
  33 #include <linux/init.h>
  34
  35 static void ddb5477_fixup(struct pci_dev *dev)
  36 {
  37         u8 old;
  38
  39         printk(KERN_NOTICE "Enabling ALI M1533/35 PS2 keyboard/mouse.\n");
  40         pci_read_config_byte(dev, 0x41, &old);
  41         pci_write_config_byte(dev, 0x41, old | 0xd0);
  42 }
  43
  44 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
  45           ddb5477_fixup);
  46 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1535,
  47           ddb5477_fixup);
  48
  49 /*
  50  * Fixup baseboard AMD chip so that tx does not underflow.
  51  *      bcr_18 |= 0x0800
  52  * This sets NOUFLO bit which makes tx not start until whole pkt
  53  * is fetched to the chip.
  54  */
  55 #define PCNET32_WIO_RDP         0x10
  56 #define PCNET32_WIO_RAP         0x12
  57 #define PCNET32_WIO_RESET       0x14
  58 #define PCNET32_WIO_BDP         0x16
  59
  60 static void ddb5477_amd_lance_fixup(struct pci_dev *dev)
  61 {
  62         unsigned long ioaddr;
  63         u16 temp;
  64
  65         ioaddr = pci_resource_start(dev, 0);
  66
  67         inw(ioaddr + PCNET32_WIO_RESET);        /* reset chip */
  68
  69         /* bcr_18 |= 0x0800 */
  70         outw(18, ioaddr + PCNET32_WIO_RAP);
  71         temp = inw(ioaddr + PCNET32_WIO_BDP);
  72         temp |= 0x0800;
  73         outw(18, ioaddr + PCNET32_WIO_RAP);
  74         outw(temp, ioaddr + PCNET32_WIO_BDP);
  75 }
  76
  77 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE,
  78           ddb5477_amd_lance_fixup);