/*      $NetBSD: cyber.c,v 1.5 2008/04/28 20:23:54 martin Exp $ */

/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frederick S. Bruckman.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

/* Store one "Usr" register on an SIIG Cyberserial multiport PCI card. */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cyber.c,v 1.5 2008/04/28 20:23:54 martin Exp $");

#include <sys/param.h>
#include <sys/device.h>
#include <sys/termios.h> /* XXX for tcflag_t in comvar.h */

#include <sys/bus.h>

#include <dev/pci/cyberreg.h>
#include <dev/pci/cybervar.h>

void
write_siig10x_usrreg(pci_chipset_tag_t pc, pcitag_t tag, int usrregno,
   int high_speed)
{
       pcireg_t curregs, newregs;

       newregs = curregs = pci_conf_read(pc, tag, SIIG10x_USR_BASE);

       if (high_speed)                                 /* Clear bit. */
               switch (usrregno) {
               case 0:
                       newregs &= ~SIIG10x_USR0_MASK;
                       break;
               case 1:
                       newregs &= ~SIIG10x_USR1_MASK;
                       break;
               case 2:
                       newregs &= ~SIIG10x_USR2_MASK;
                       break;
               case 3:
                       newregs &= ~SIIG10x_USR3_MASK;
               }
       else /* if (!high_speed) */                     /* Set bit. */
               switch (usrregno) {
               case 0:
                       newregs |= SIIG10x_USR0_MASK;
                       break;
               case 1:
                       newregs |= SIIG10x_USR1_MASK;
                       break;
               case 2:
                       newregs |= SIIG10x_USR2_MASK;
                       break;
               case 3:
                       newregs |= SIIG10x_USR3_MASK;
               }

       if (newregs != curregs)
               pci_conf_write(pc, tag, SIIG10x_USR_BASE, newregs);
}

void
write_siig20x_usrreg(pci_chipset_tag_t pc, pcitag_t tag, int usrregno,
   int high_speed)
{
       pcireg_t curreg, newreg;
       int offset;

       switch (usrregno) {
               case 0:
                       offset = SIIG20x_USR0;
                       break;
               case 1:
                       offset = SIIG20x_USR1;
                       break;
               default:
                       return;
       }

       newreg = curreg = pci_conf_read(pc, tag, offset);

       if (high_speed)                                 /* Clear bit. */
               newreg &= ~SIIG20x_USR_MASK;
       else /* if (!high_speed) */                     /* Set bit. */
               newreg |= SIIG20x_USR_MASK;

       if (newreg != curreg)
               pci_conf_write(pc, tag, offset, newreg);
}