sys/dev/pci/cyber.c

   1 /*      $NetBSD: cyber.c,v 1.4 2007/10/19 12:00:42 ad Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Frederick S. Bruckman.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /* Store one "Usr" register on an SIIG Cyberserial multiport PCI card. */
  33
  34 #include <sys/cdefs.h>
  35 __KERNEL_RCSID(0, "$NetBSD: cyber.c,v 1.4 2007/10/19 12:00:42 ad Exp $");
  36
  37 #include <sys/param.h>
  38 #include <sys/device.h>
  39 #include <sys/termios.h> /* XXX for tcflag_t in comvar.h */
  40
  41 #include <sys/bus.h>
  42
  43 #include <dev/pci/cyberreg.h>
  44 #include <dev/pci/cybervar.h>
  45
  46 void
  47 write_siig10x_usrreg(pci_chipset_tag_t pc, pcitag_t tag, int usrregno,
  48     int high_speed)
  49 {
  50         pcireg_t curregs, newregs;
  51
  52         newregs = curregs = pci_conf_read(pc, tag, SIIG10x_USR_BASE);
  53
  54         if (high_speed)                                 /* Clear bit. */
  55                 switch (usrregno) {
  56                 case 0:
  57                         newregs &= ~SIIG10x_USR0_MASK;
  58                         break;
  59                 case 1:
  60                         newregs &= ~SIIG10x_USR1_MASK;
  61                         break;
  62                 case 2:
  63                         newregs &= ~SIIG10x_USR2_MASK;
  64                         break;
  65                 case 3:
  66                         newregs &= ~SIIG10x_USR3_MASK;
  67                 }
  68         else /* if (!high_speed) */                     /* Set bit. */
  69                 switch (usrregno) {
  70                 case 0:
  71                         newregs |= SIIG10x_USR0_MASK;
  72                         break;
  73                 case 1:
  74                         newregs |= SIIG10x_USR1_MASK;
  75                         break;
  76                 case 2:
  77                         newregs |= SIIG10x_USR2_MASK;
  78                         break;
  79                 case 3:
  80                         newregs |= SIIG10x_USR3_MASK;
  81                 }
  82
  83         if (newregs != curregs)
  84                 pci_conf_write(pc, tag, SIIG10x_USR_BASE, newregs);
  85 }
  86
  87 void
  88 write_siig20x_usrreg(pci_chipset_tag_t pc, pcitag_t tag, int usrregno,
  89     int high_speed)
  90 {
  91         pcireg_t curreg, newreg;
  92         int offset;
  93
  94         switch (usrregno) {
  95                 case 0:
  96                         offset = SIIG20x_USR0;
  97                         break;
  98                 case 1:
  99                         offset = SIIG20x_USR1;
 100                         break;
 101                 default:
 102                         return;
 103         }
 104
 105         newreg = curreg = pci_conf_read(pc, tag, offset);
 106
 107         if (high_speed)                                 /* Clear bit. */
 108                 newreg &= ~SIIG20x_USR_MASK;
 109         else /* if (!high_speed) */                     /* Set bit. */
 110                 newreg |= SIIG20x_USR_MASK;
 111
 112         if (newreg != curreg)
 113                 pci_conf_write(pc, tag, offset, newreg);
 114 }