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cyber.c revision 1.2 
      1 /*	$NetBSD: cyber.c,v 1.2 2004/02/04 01:58:44 fredb 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /* Store one "Usr" register on an SIIG Cyberserial multiport PCI card. */
     40 
     41 #include <sys/cdefs.h>
     42 __KERNEL_RCSID(0, "$NetBSD: cyber.c,v 1.2 2004/02/04 01:58:44 fredb Exp $");
     43 
     44 #include <sys/param.h>
     45 #include <sys/device.h>
     46 #include <sys/termios.h> /* XXX for tcflag_t in comvar.h */
     47 
     48 #include <machine/bus.h>
     49 
     50 #include <dev/pci/cyberreg.h>
     51 #include <dev/pci/cybervar.h>
     52 
     53 void
     54 write_siig10x_usrreg(pci_chipset_tag_t pc, pcitag_t tag, int usrregno,
     55     int high_speed)
     56 {
     57 	pcireg_t curregs, newregs;
     58 
     59 	newregs = curregs = pci_conf_read(pc, tag, SIIG10x_USR_BASE);
     60 
     61 	if (high_speed)					/* Clear bit. */
     62 		switch (usrregno) {
     63 		case 0:
     64 			newregs &= ~SIIG10x_USR0_MASK;
     65 			break;
     66 		case 1:
     67 			newregs &= ~SIIG10x_USR1_MASK;
     68 			break;
     69 		case 2:
     70 			newregs &= ~SIIG10x_USR2_MASK;
     71 			break;
     72 		case 3:
     73 			newregs &= ~SIIG10x_USR3_MASK;
     74 		}
     75 	else /* if (!high_speed) */			/* Set bit. */
     76 		switch (usrregno) {
     77 		case 0:
     78 			newregs |= SIIG10x_USR0_MASK;
     79 			break;
     80 		case 1:
     81 			newregs |= SIIG10x_USR1_MASK;
     82 			break;
     83 		case 2:
     84 			newregs |= SIIG10x_USR2_MASK;
     85 			break;
     86 		case 3:
     87 			newregs |= SIIG10x_USR3_MASK;
     88 		}
     89 
     90 	if (newregs != curregs)
     91 		pci_conf_write(pc, tag, SIIG10x_USR_BASE, newregs);
     92 }
     93 
     94 void
     95 write_siig20x_usrreg(pci_chipset_tag_t pc, pcitag_t tag, int usrregno,
     96     int high_speed)
     97 {
     98 	pcireg_t curreg, newreg;
     99 	int offset;
    100 
    101 	switch (usrregno) {
    102 		case 0:
    103 			offset = SIIG20x_USR0;
    104 			break;
    105 		case 1:
    106 			offset = SIIG20x_USR1;
    107 			break;
    108 		default:
    109 			return;
    110 	}
    111 
    112 	newreg = curreg = pci_conf_read(pc, tag, offset);
    113 
    114 	if (high_speed)					/* Clear bit. */
    115 		newreg &= ~SIIG20x_USR_MASK;
    116 	else /* if (!high_speed) */			/* Set bit. */
    117 		newreg |= SIIG20x_USR_MASK;
    118 
    119 	if (newreg != curreg)
    120 		pci_conf_write(pc, tag, offset, newreg);
    121 }
    122