drivers/isdn/hisax/sedlbauer_cs.c

   1 /*======================================================================
   2
   3     A Sedlbauer PCMCIA client driver
   4
   5     This driver is for the Sedlbauer Speed Star and Speed Star II,
   6     which are ISDN PCMCIA Cards.
   7
   8     The contents of this file are subject to the Mozilla Public
   9     License Version 1.1 (the "License"); you may not use this file
  10     except in compliance with the License. You may obtain a copy of
  11     the License at http://www.mozilla.org/MPL/
  12
  13     Software distributed under the License is distributed on an "AS
  14     IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  15     implied. See the License for the specific language governing
  16     rights and limitations under the License.
  17
  18     The initial developer of the original code is David A. Hinds
  19     <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  20     are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  21
  22     Modifications from dummy_cs.c are Copyright (C) 1999-2001 Marcus Niemann
  23     <maniemann@users.sourceforge.net>. All Rights Reserved.
  24
  25     Alternatively, the contents of this file may be used under the
  26     terms of the GNU General Public License version 2 (the "GPL"), in
  27     which case the provisions of the GPL are applicable instead of the
  28     above.  If you wish to allow the use of your version of this file
  29     only under the terms of the GPL and not to allow others to use
  30     your version of this file under the MPL, indicate your decision
  31     by deleting the provisions above and replace them with the notice
  32     and other provisions required by the GPL.  If you do not delete
  33     the provisions above, a recipient may use your version of this
  34     file under either the MPL or the GPL.
  35
  36 ======================================================================*/
  37
  38 #include <linux/kernel.h>
  39 #include <linux/module.h>
  40 #include <linux/init.h>
  41 #include <linux/ptrace.h>
  42 #include <linux/slab.h>
  43 #include <linux/string.h>
  44 #include <linux/timer.h>
  45 #include <linux/ioport.h>
  46 #include <asm/io.h>
  47 #include <asm/system.h>
  48
  49 #include <pcmcia/cistpl.h>
  50 #include <pcmcia/cisreg.h>
  51 #include <pcmcia/ds.h>
  52 #include "hisax_cfg.h"
  53
  54 MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for Sedlbauer cards");
  55 MODULE_AUTHOR("Marcus Niemann");
  56 MODULE_LICENSE("Dual MPL/GPL");
  57
  58
  59 /*====================================================================*/
  60
  61 /* Parameters that can be set with 'insmod' */
  62
  63 static int protocol = 2;        /* EURO-ISDN Default */
  64 module_param(protocol, int, 0);
  65
  66 /*====================================================================*/
  67
  68 /*
  69    The event() function is this driver's Card Services event handler.
  70    It will be called by Card Services when an appropriate card status
  71    event is received.  The config() and release() entry points are
  72    used to configure or release a socket, in response to card
  73    insertion and ejection events.  They are invoked from the sedlbauer
  74    event handler.
  75 */
  76
  77 static int sedlbauer_config(struct pcmcia_device *link) __devinit ;
  78 static void sedlbauer_release(struct pcmcia_device *link);
  79
  80 /*
  81    The attach() and detach() entry points are used to create and destroy
  82    "instances" of the driver, where each instance represents everything
  83    needed to manage one actual PCMCIA card.
  84 */
  85
  86 static void sedlbauer_detach(struct pcmcia_device *p_dev) __devexit;
  87
  88 typedef struct local_info_t {
  89         struct pcmcia_device    *p_dev;
  90     int                 stop;
  91     int                 cardnr;
  92 } local_info_t;
  93
  94 /*======================================================================
  95
  96     sedlbauer_attach() creates an "instance" of the driver, allocating
  97     local data structures for one device.  The device is registered
  98     with Card Services.
  99
 100     The dev_link structure is initialized, but we don't actually
 101     configure the card at this point -- we wait until we receive a
 102     card insertion event.
 103
 104 ======================================================================*/
 105
 106 static int __devinit sedlbauer_probe(struct pcmcia_device *link)
 107 {
 108     local_info_t *local;
 109
 110     dev_dbg(&link->dev, "sedlbauer_attach()\n");
 111
 112     /* Allocate space for private device-specific data */
 113     local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
 114     if (!local) return -ENOMEM;
 115     local->cardnr = -1;
 116
 117     local->p_dev = link;
 118     link->priv = local;
 119
 120     /*
 121       General socket configuration defaults can go here.  In this
 122       client, we assume very little, and rely on the CIS for almost
 123       everything.  In most clients, many details (i.e., number, sizes,
 124       and attributes of IO windows) are fixed by the nature of the
 125       device, and can be hard-wired here.
 126     */
 127
 128     /* from old sedl_cs
 129     */
 130     /* The io structure describes IO port mapping */
 131     link->resource[0]->end = 8;
 132     link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
 133
 134     return sedlbauer_config(link);
 135 } /* sedlbauer_attach */
 136
 137 /*======================================================================
 138
 139     This deletes a driver "instance".  The device is de-registered
 140     with Card Services.  If it has been released, all local data
 141     structures are freed.  Otherwise, the structures will be freed
 142     when the device is released.
 143
 144 ======================================================================*/
 145
 146 static void __devexit sedlbauer_detach(struct pcmcia_device *link)
 147 {
 148         dev_dbg(&link->dev, "sedlbauer_detach(0x%p)\n", link);
 149
 150         ((local_info_t *)link->priv)->stop = 1;
 151         sedlbauer_release(link);
 152
 153         /* This points to the parent local_info_t struct */
 154         kfree(link->priv);
 155 } /* sedlbauer_detach */
 156
 157 /*======================================================================
 158
 159     sedlbauer_config() is scheduled to run after a CARD_INSERTION event
 160     is received, to configure the PCMCIA socket, and to make the
 161     device available to the system.
 162
 163 ======================================================================*/
 164 static int sedlbauer_config_check(struct pcmcia_device *p_dev,
 165                                   cistpl_cftable_entry_t *cfg,
 166                                   cistpl_cftable_entry_t *dflt,
 167                                   void *priv_data)
 168 {
 169         if (cfg->index == 0)
 170                 return -ENODEV;
 171
 172         /* IO window settings */
 173         p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
 174         if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
 175                 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
 176                 p_dev->resource[0]->start = io->win[0].base;
 177                 p_dev->resource[0]->end = io->win[0].len;
 178                 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
 179                 p_dev->resource[0]->flags |=
 180                                         pcmcia_io_cfg_data_width(io->flags);
 181                 if (io->nwin > 1) {
 182                         p_dev->resource[1]->flags = p_dev->resource[0]->flags;
 183                         p_dev->resource[1]->start = io->win[1].base;
 184                         p_dev->resource[1]->end = io->win[1].len;
 185                 }
 186                 /* This reserves IO space but doesn't actually enable it */
 187                 p_dev->io_lines = 3;
 188                 if (pcmcia_request_io(p_dev) != 0)
 189                         return -ENODEV;
 190         }
 191
 192         return 0;
 193 }
 194
 195
 196
 197 static int __devinit sedlbauer_config(struct pcmcia_device *link)
 198 {
 199     int ret;
 200     IsdnCard_t  icard;
 201
 202     dev_dbg(&link->dev, "sedlbauer_config(0x%p)\n", link);
 203
 204     link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_CHECK_VCC |
 205             CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO;
 206
 207     /*
 208       In this loop, we scan the CIS for configuration table entries,
 209       each of which describes a valid card configuration, including
 210       voltage, IO window, memory window, and interrupt settings.
 211
 212       We make no assumptions about the card to be configured: we use
 213       just the information available in the CIS.  In an ideal world,
 214       this would work for any PCMCIA card, but it requires a complete
 215       and accurate CIS.  In practice, a driver usually "knows" most of
 216       these things without consulting the CIS, and most client drivers
 217       will only use the CIS to fill in implementation-defined details.
 218     */
 219     ret = pcmcia_loop_config(link, sedlbauer_config_check, NULL);
 220     if (ret)
 221             goto failed;
 222
 223     /*
 224        This actually configures the PCMCIA socket -- setting up
 225        the I/O windows and the interrupt mapping, and putting the
 226        card and host interface into "Memory and IO" mode.
 227     */
 228     ret = pcmcia_enable_device(link);
 229     if (ret)
 230             goto failed;
 231
 232     /* Finally, report what we've done */
 233     dev_info(&link->dev, "index 0x%02x:",
 234            link->config_index);
 235     if (link->vpp)
 236         printk(", Vpp %d.%d", link->vpp/10, link->vpp%10);
 237     printk(", irq %d", link->irq);
 238     if (link->resource[0])
 239         printk(" & %pR", link->resource[0]);
 240     if (link->resource[1])
 241         printk(" & %pR", link->resource[1]);
 242     printk("\n");
 243
 244     icard.para[0] = link->irq;
 245     icard.para[1] = link->resource[0]->start;
 246     icard.protocol = protocol;
 247     icard.typ = ISDN_CTYPE_SEDLBAUER_PCMCIA;
 248
 249     ret = hisax_init_pcmcia(link,
 250                             &(((local_info_t *)link->priv)->stop), &icard);
 251     if (ret < 0) {
 252         printk(KERN_ERR "sedlbauer_cs: failed to initialize SEDLBAUER PCMCIA %d with %pR\n",
 253                 ret, link->resource[0]);
 254         sedlbauer_release(link);
 255         return -ENODEV;
 256     } else
 257         ((local_info_t *)link->priv)->cardnr = ret;
 258
 259     return 0;
 260
 261 failed:
 262     sedlbauer_release(link);
 263     return -ENODEV;
 264
 265 } /* sedlbauer_config */
 266
 267 /*======================================================================
 268
 269     After a card is removed, sedlbauer_release() will unregister the
 270     device, and release the PCMCIA configuration.  If the device is
 271     still open, this will be postponed until it is closed.
 272
 273 ======================================================================*/
 274
 275 static void sedlbauer_release(struct pcmcia_device *link)
 276 {
 277     local_info_t *local = link->priv;
 278     dev_dbg(&link->dev, "sedlbauer_release(0x%p)\n", link);
 279
 280     if (local) {
 281         if (local->cardnr >= 0) {
 282             /* no unregister function with hisax */
 283             HiSax_closecard(local->cardnr);
 284         }
 285     }
 286
 287     pcmcia_disable_device(link);
 288 } /* sedlbauer_release */
 289
 290 static int sedlbauer_suspend(struct pcmcia_device *link)
 291 {
 292         local_info_t *dev = link->priv;
 293
 294         dev->stop = 1;
 295
 296         return 0;
 297 }
 298
 299 static int sedlbauer_resume(struct pcmcia_device *link)
 300 {
 301         local_info_t *dev = link->priv;
 302
 303         dev->stop = 0;
 304
 305         return 0;
 306 }
 307
 308
 309 static struct pcmcia_device_id sedlbauer_ids[] = {
 310         PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "speed star II", "V 3.1", 0x81fb79f5, 0xf3612e1d, 0x6b95c78a),
 311         PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D67", 0x81fb79f5, 0xe4e9bc12, 0x397b7e90),
 312         PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", "4D98", 0x81fb79f5, 0xe4e9bc12, 0x2e5c7fce),
 313         PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (C) 93-94 VK", 0x81fb79f5, 0xe4e9bc12, 0x8db143fe),
 314         PCMCIA_DEVICE_PROD_ID123("SEDLBAUER", "ISDN-Adapter", " (c) 93-95 VK", 0x81fb79f5, 0xe4e9bc12, 0xb391ab4c),
 315         PCMCIA_DEVICE_PROD_ID12("HST High Soft Tech GmbH", "Saphir II B", 0xd79e0b84, 0x21d083ae),
 316 /*      PCMCIA_DEVICE_PROD_ID1234("SEDLBAUER", 0x81fb79f5), */ /* too generic*/
 317         PCMCIA_DEVICE_NULL
 318 };
 319 MODULE_DEVICE_TABLE(pcmcia, sedlbauer_ids);
 320
 321 static struct pcmcia_driver sedlbauer_driver = {
 322         .owner          = THIS_MODULE,
 323         .drv            = {
 324                 .name   = "sedlbauer_cs",
 325         },
 326         .probe          = sedlbauer_probe,
 327         .remove         = __devexit_p(sedlbauer_detach),
 328         .id_table       = sedlbauer_ids,
 329         .suspend        = sedlbauer_suspend,
 330         .resume         = sedlbauer_resume,
 331 };
 332
 333 static int __init init_sedlbauer_cs(void)
 334 {
 335         return pcmcia_register_driver(&sedlbauer_driver);
 336 }
 337
 338 static void __exit exit_sedlbauer_cs(void)
 339 {
 340         pcmcia_unregister_driver(&sedlbauer_driver);
 341 }
 342
 343 module_init(init_sedlbauer_cs);
 344 module_exit(exit_sedlbauer_cs);