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      1 /*	$NetBSD: cyber.c,v 1.5 2008/04/28 20:23:54 martin 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 1.5 2008/04/28 20:23:54 martin 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 }
    115