sys/dev/mca/com_mca.c

   1 /*      $NetBSD: com_mca.c,v 1.21 2008/04/28 20:23:53 martin Exp $      */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum.
   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) 1991 The Regents of the University of California.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)com.c       7.5 (Berkeley) 5/16/91
  61  */
  62
  63 /*
  64  * This driver attaches serial port boards and internal modems.
  65  */
  66
  67 #include <sys/cdefs.h>
  68 __KERNEL_RCSID(0, "$NetBSD: com_mca.c,v 1.21 2008/04/28 20:23:53 martin Exp $");
  69
  70 #include <sys/param.h>
  71 #include <sys/systm.h>
  72 #include <sys/ioctl.h>
  73 #include <sys/select.h>
  74 #include <sys/tty.h>
  75 #include <sys/proc.h>
  76 #include <sys/file.h>
  77 #include <sys/uio.h>
  78 #include <sys/kernel.h>
  79 #include <sys/syslog.h>
  80 #include <sys/device.h>
  81
  82 #include <sys/intr.h>
  83 #include <sys/bus.h>
  84
  85 #include <dev/ic/comreg.h>
  86 #include <dev/ic/comvar.h>
  87
  88 #include <dev/mca/mcavar.h>
  89 #include <dev/mca/mcadevs.h>
  90
  91 struct com_mca_softc {
  92         struct  com_softc sc_com;       /* real "com" softc */
  93
  94         /* MCA-specific goo. */
  95         void    *sc_ih;                 /* interrupt handler */
  96 };
  97
  98 int com_mca_probe(device_t, cfdata_t , void *);
  99 void com_mca_attach(device_t, device_t, void *);
 100
 101 static int ibm_modem_getcfg(struct mca_attach_args *, int *, int *);
 102 static int neocom1_getcfg(struct mca_attach_args *, int *, int *);
 103 static int ibm_mpcom_getcfg(struct mca_attach_args *, int *, int *);
 104
 105 CFATTACH_DECL_NEW(com_mca, sizeof(struct com_mca_softc),
 106     com_mca_probe, com_mca_attach, NULL, NULL);
 107
 108 static const struct com_mca_product {
 109         u_int32_t       cp_prodid;      /* MCA product ID */
 110         const char      *cp_name;       /* device name */
 111         int (*cp_getcfg)(struct mca_attach_args *, int *iobase, int *irq);
 112                                         /* get device i/o base and irq */
 113 } com_mca_products[] = {
 114         { MCA_PRODUCT_IBM_MOD,  "IBM Internal Modem",   ibm_modem_getcfg },
 115         { MCA_PRODUCT_NEOCOM1,  "NeoTecH Single RS-232 Async. Adapter, SM110",
 116                 neocom1_getcfg },
 117         { MCA_PRODUCT_IBM_MPCOM,"IBM Multi-Protocol Communications Adapter",
 118                 ibm_mpcom_getcfg },
 119         { 0,                    NULL,                   NULL },
 120 };
 121
 122 static const struct com_mca_product *com_mca_lookup(int);
 123
 124 static const struct com_mca_product *
 125 com_mca_lookup(int ma_id)
 126 {
 127         const struct com_mca_product *cpp;
 128
 129         for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++)
 130                 if (cpp->cp_prodid == ma_id)
 131                         return (cpp);
 132
 133         return (NULL);
 134 }
 135
 136 int
 137 com_mca_probe(device_t parent, cfdata_t match, void *aux)
 138 {
 139         struct mca_attach_args *ma = aux;
 140
 141         if (com_mca_lookup(ma->ma_id))
 142                 return (1);
 143
 144         return (0);
 145 }
 146
 147 void
 148 com_mca_attach(device_t parent, device_t self, void *aux)
 149 {
 150         struct com_mca_softc *isc = device_private(self);
 151         struct com_softc *sc = &isc->sc_com;
 152         int iobase, irq;
 153         struct mca_attach_args *ma = aux;
 154         const struct com_mca_product *cpp;
 155         bus_space_handle_t ioh;
 156
 157         sc->sc_dev = self;
 158         cpp = com_mca_lookup(ma->ma_id);
 159
 160         /* get iobase and irq */
 161         if ((*cpp->cp_getcfg)(ma, &iobase, &irq))
 162                 return;
 163
 164         if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &ioh)) {
 165                 aprint_error(": can't map i/o space\n");
 166                 return;
 167         }
 168
 169         COM_INIT_REGS(sc->sc_regs, ma->ma_iot, ioh, iobase);
 170         sc->sc_frequency = COM_FREQ;
 171
 172         aprint_normal(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1,
 173                 iobase, iobase + COM_NPORTS - 1, irq);
 174
 175         com_attach_subr(sc);
 176
 177         aprint_normal_dev(self, "%s\n", cpp->cp_name);
 178
 179         isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL,
 180                         comintr, sc);
 181         if (isc->sc_ih == NULL) {
 182                 aprint_error_dev(self,
 183                     "couldn't establish interrupt handler\n");
 184                 return;
 185         }
 186
 187         /*
 188          * com_cleanup: shutdown hook for buggy BIOSs that don't
 189          * recognize the UART without a disabled FIFO.
 190          * XXX is this necessary on MCA ? --- jdolecek
 191          */
 192         if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup))
 193                 aprint_error_dev(self, "could not establish shutdown hook\n");
 194 }
 195
 196 /* map serial_X to iobase and irq */
 197 static const struct {
 198         int iobase;
 199         int irq;
 200 } MCA_SERIAL[] = {
 201         { 0x03f8,       4 },    /* SERIAL_1 */
 202         { 0x02f8,       3 },    /* SERIAL_2 */
 203         { 0x3220,       3 },    /* SERIAL_3 */
 204         { 0x3228,       3 },    /* SERIAL_4 */
 205         { 0x4220,       3 },    /* SERIAL_5 */
 206         { 0x4228,       3 },    /* SERIAL_6 */
 207         { 0x5220,       3 },    /* SERIAL_7 */
 208         { 0x5228,       3 },    /* SERIAL_8 */
 209 };
 210
 211 /*
 212  * Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't
 213  * seem to support even AT commands, it's good as example for adding
 214  * other stuff though.
 215  */
 216 static int
 217 ibm_modem_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp)
 218 {
 219         int pos2;
 220         int snum;
 221
 222         pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
 223
 224         /*
 225          * POS register 2: (adf pos0)
 226          * 7 6 5 4 3 2 1 0
 227          *         \__/  \__ enable: 0=adapter disabled, 1=adapter enabled
 228          *            \_____ Serial Configuration: XX=SERIAL_XX
 229          */
 230
 231         snum = (pos2 & 0x0e) >> 1;
 232
 233         *iobasep = MCA_SERIAL[snum].iobase;
 234         *irqp = MCA_SERIAL[snum].irq;
 235
 236         return (0);
 237 }
 238
 239 /*
 240  * Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110.
 241  */
 242 static int
 243 neocom1_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp)
 244 {
 245         int pos2, pos3, pos4;
 246         static const int neotech_irq[] = { 12, 9, 4, 3 };
 247
 248         pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
 249         pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
 250         pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
 251
 252         /*
 253          * POS register 2: (adf pos0)
 254          * 7 6 5 4 3 2 1 0
 255          *     1     \_/ \__ enable: 0=adapter disabled, 1=adapter enabled
 256          *             \____ IRQ: 11=3 10=4 01=9 00=12
 257          *
 258          * POS register 3: (adf pos1)
 259          * 7 6 5 4 3 2 1 0
 260          * \______/
 261          *        \_________ I/O Address: bits 7-3
 262          *
 263          * POS register 4: (adf pos2)
 264          * 7 6 5 4 3 2 1 0
 265          * \_____________/
 266          *               \__ I/O Address: bits 15-8
 267          */
 268
 269         *iobasep = (pos4 << 8) | (pos3 & 0xf8);
 270         *irqp = neotech_irq[(pos2 & 0x06) >> 1];
 271
 272         return (0);
 273 }
 274
 275 /*
 276  * Get configuration for IBM Multi-Protocol Communications Adapter.
 277  * We only support SERIAL mode, bail out if set to SDLC or BISYNC.
 278  */
 279 static int
 280 ibm_mpcom_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp)
 281 {
 282         int snum, pos2;
 283
 284         pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
 285
 286         /*
 287          * For SERIAL mode, bit 4 has to be 0.
 288          *
 289          * POS register 2: (adf pos0)
 290          * 7 6 5 4 3 2 1 0
 291          *       0 \__/  \__ enable: 0=adapter disabled, 1=adapter enabled
 292          *            \_____ Serial Configuration: XX=SERIAL_XX
 293          */
 294
 295         if (pos2 & 0x10) {
 296                 aprint_error(": not set to SERIAL mode, ignored\n");
 297                 return (1);
 298         }
 299
 300         snum = (pos2 & 0x0e) >> 1;
 301
 302         *iobasep = MCA_SERIAL[snum].iobase;
 303         *irqp = MCA_SERIAL[snum].irq;
 304
 305         return (0);
 306 }