sys/arch/hp300/stand/common/apci.c

   1 /*      $NetBSD: apci.c,v 1.9 2006/07/19 19:23:56 tsutsui Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   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 /*
  33  * Copyright (c) 1990, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * the Systems Programming Group of the University of Utah Computer
  38  * Science Department.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  * 2. Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in the
  47  *    documentation and/or other materials provided with the distribution.
  48  * 3. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)dca.c       8.1 (Berkeley) 6/10/93
  65  */
  66 /*
  67  * Copyright (c) 1988 University of Utah.
  68  *
  69  * This code is derived from software contributed to Berkeley by
  70  * the Systems Programming Group of the University of Utah Computer
  71  * Science Department.
  72  *
  73  * Redistribution and use in source and binary forms, with or without
  74  * modification, are permitted provided that the following conditions
  75  * are met:
  76  * 1. Redistributions of source code must retain the above copyright
  77  *    notice, this list of conditions and the following disclaimer.
  78  * 2. Redistributions in binary form must reproduce the above copyright
  79  *    notice, this list of conditions and the following disclaimer in the
  80  *    documentation and/or other materials provided with the distribution.
  81  * 3. All advertising materials mentioning features or use of this software
  82  *    must display the following acknowledgement:
  83  *      This product includes software developed by the University of
  84  *      California, Berkeley and its contributors.
  85  * 4. Neither the name of the University nor the names of its contributors
  86  *    may be used to endorse or promote products derived from this software
  87  *    without specific prior written permission.
  88  *
  89  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  90  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  91  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  92  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  93  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  94  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  95  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  96  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  97  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  98  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  99  * SUCH DAMAGE.
 100  *
 101  *      @(#)dca.c       8.1 (Berkeley) 6/10/93
 102  */
 103
 104 #ifdef APCICONSOLE
 105 #include <sys/param.h>
 106 #include <dev/cons.h>
 107
 108 #include <lib/libsa/stand.h>
 109
 110 #include <hp300/dev/frodoreg.h>         /* for APCI offsets */
 111 #include <hp300/dev/intioreg.h>         /* for frodo offsets */
 112
 113 #include <hp300/stand/common/apcireg.h> /* for register map */
 114 #include <hp300/stand/common/dcareg.h>  /* for register bits */
 115 #include <hp300/stand/common/consdefs.h>
 116 #include <hp300/stand/common/samachdep.h>
 117
 118 struct apciregs *apcicnaddr = 0;
 119
 120 void
 121 apciprobe(struct consdev *cp)
 122 {
 123
 124         apcicnaddr = (void *)IIOV(FRODO_BASE + FRODO_APCI_OFFSET(1));
 125
 126         cp->cn_pri = CN_DEAD;
 127
 128         /*
 129          * Only a 425e can have an APCI console.  On all other 4xx models,
 130          * the "first" serial port is mapped to the DCA at select code 9.
 131          */
 132         if (machineid != HP_425 || mmuid != MMUID_425_E)
 133                 return;
 134
 135 #ifdef FORCEAPCICONSOLE
 136         cp->cn_pri = CN_REMOTE;
 137 #else
 138         cp->cn_pri = CN_NORMAL;
 139 #endif
 140         curcons_scode = -2;
 141 }
 142
 143 void
 144 apciinit(struct consdev *cp)
 145 {
 146         struct apciregs *apci = (struct apciregs *)apcicnaddr;
 147
 148         /*
 149          * The only system on which this will happen is a 425e,
 150          * which does not currently have a framebuffer console
 151          * driver.  We use the ROM's output method to let the
 152          * operator know we're switching to the APCI.
 153          */
 154         userom = 1;
 155         printf("Switching to APCI console.\n");
 156         userom = 0;
 157
 158         apci->ap_cfcr = CFCR_DLAB;
 159         apci->ap_data = APCIBRD(9600) & 0xff;
 160         apci->ap_ier  = (APCIBRD(9600) >> 8) & 0xff;
 161         apci->ap_cfcr = CFCR_8BITS;
 162         apci->ap_fifo =
 163             FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1;
 164         apci->ap_mcr = MCR_DTR | MCR_RTS;
 165 }
 166
 167 /* ARGSUSED */
 168 #ifndef SMALL
 169 int
 170 apcigetchar(dev_t dev)
 171 {
 172         struct apciregs *apci = apcicnaddr;
 173         short stat;
 174         int c;
 175
 176         if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0)
 177                 return 0;
 178         c = apci->ap_data;
 179         return c;
 180 }
 181 #else
 182 int
 183 apcigetchar(dev_t dev)
 184 {
 185
 186         return 0;
 187 }
 188 #endif
 189
 190 /* ARGSUSED */
 191 void
 192 apciputchar(dev_t dev, int c)
 193 {
 194         struct apciregs *apci = apcicnaddr;
 195         int timo;
 196         short stat;
 197
 198         /* wait a reasonable time for the transmitter to come ready */
 199         timo = 50000;
 200         while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
 201                 ;
 202         apci->ap_data = c;
 203         /* wait for this transmission to complete */
 204         timo = 1000000;
 205         while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
 206                 ;
 207 }
 208 #endif