drivers/telephony/ixj_pcmcia.c

   1 #include "ixj-ver.h"
   2
   3 #include <linux/module.h>
   4
   5 #include <linux/init.h>
   6 #include <linux/sched.h>
   7 #include <linux/kernel.h>       /* printk() */
   8 #include <linux/fs.h>           /* everything... */
   9 #include <linux/errno.h>        /* error codes */
  10 #include <linux/slab.h>
  11
  12 #include <pcmcia/cs_types.h>
  13 #include <pcmcia/cs.h>
  14 #include <pcmcia/cistpl.h>
  15 #include <pcmcia/ds.h>
  16
  17 #include "ixj.h"
  18
  19 /*
  20  *      PCMCIA service support for Quicknet cards
  21  */
  22
  23 #ifdef PCMCIA_DEBUG
  24 static int pc_debug = PCMCIA_DEBUG;
  25 module_param(pc_debug, int, 0644);
  26 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
  27 #else
  28 #define DEBUG(n, args...)
  29 #endif
  30
  31 typedef struct ixj_info_t {
  32         int ndev;
  33         dev_node_t node;
  34         struct ixj *port;
  35 } ixj_info_t;
  36
  37 static dev_link_t *ixj_attach(void);
  38 static void ixj_detach(struct pcmcia_device *p_dev);
  39 static void ixj_config(dev_link_t * link);
  40 static void ixj_cs_release(dev_link_t * link);
  41 static int ixj_event(event_t event, int priority, event_callback_args_t * args);
  42 static dev_info_t dev_info = "ixj_cs";
  43 static dev_link_t *dev_list = NULL;
  44
  45 static dev_link_t *ixj_attach(void)
  46 {
  47         client_reg_t client_reg;
  48         dev_link_t *link;
  49         int ret;
  50         DEBUG(0, "ixj_attach()\n");
  51         /* Create new ixj device */
  52         link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
  53         if (!link)
  54                 return NULL;
  55         memset(link, 0, sizeof(struct dev_link_t));
  56         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
  57         link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
  58         link->io.IOAddrLines = 3;
  59         link->conf.Vcc = 50;
  60         link->conf.IntType = INT_MEMORY_AND_IO;
  61         link->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
  62         if (!link->priv) {
  63                 kfree(link);
  64                 return NULL;
  65         }
  66         memset(link->priv, 0, sizeof(struct ixj_info_t));
  67         /* Register with Card Services */
  68         link->next = dev_list;
  69         dev_list = link;
  70         client_reg.dev_info = &dev_info;
  71         client_reg.Version = 0x0210;
  72         client_reg.event_callback_args.client_data = link;
  73         ret = pcmcia_register_client(&link->handle, &client_reg);
  74         if (ret != CS_SUCCESS) {
  75                 cs_error(link->handle, RegisterClient, ret);
  76                 ixj_detach(link->handle);
  77                 return NULL;
  78         }
  79         return link;
  80 }
  81
  82 static void ixj_detach(struct pcmcia_device *p_dev)
  83 {
  84         dev_link_t *link = dev_to_instance(p_dev);
  85         dev_link_t **linkp;
  86
  87         DEBUG(0, "ixj_detach(0x%p)\n", link);
  88         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
  89                 if (*linkp == link)
  90                         break;
  91         if (*linkp == NULL)
  92                 return;
  93         link->state &= ~DEV_RELEASE_PENDING;
  94         if (link->state & DEV_CONFIG)
  95                 ixj_cs_release(link);
  96
  97         /* Unlink device structure, free bits */
  98         *linkp = link->next;
  99         kfree(link->priv);
 100         kfree(link);
 101 }
 102
 103 #define CS_CHECK(fn, ret) \
 104 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 105
 106 static void ixj_get_serial(dev_link_t * link, IXJ * j)
 107 {
 108         client_handle_t handle;
 109         tuple_t tuple;
 110         u_short buf[128];
 111         char *str;
 112         int last_ret, last_fn, i, place;
 113         handle = link->handle;
 114         DEBUG(0, "ixj_get_serial(0x%p)\n", link);
 115         tuple.TupleData = (cisdata_t *) buf;
 116         tuple.TupleOffset = 0;
 117         tuple.TupleDataMax = 80;
 118         tuple.Attributes = 0;
 119         tuple.DesiredTuple = CISTPL_VERS_1;
 120         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 121         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 122         str = (char *) buf;
 123         printk("PCMCIA Version %d.%d\n", str[0], str[1]);
 124         str += 2;
 125         printk("%s", str);
 126         str = str + strlen(str) + 1;
 127         printk(" %s", str);
 128         str = str + strlen(str) + 1;
 129         place = 1;
 130         for (i = strlen(str) - 1; i >= 0; i--) {
 131                 switch (str[i]) {
 132                 case '0':
 133                 case '1':
 134                 case '2':
 135                 case '3':
 136                 case '4':
 137                 case '5':
 138                 case '6':
 139                 case '7':
 140                 case '8':
 141                 case '9':
 142                         j->serial += (str[i] - 48) * place;
 143                         break;
 144                 case 'A':
 145                 case 'B':
 146                 case 'C':
 147                 case 'D':
 148                 case 'E':
 149                 case 'F':
 150                         j->serial += (str[i] - 55) * place;
 151                         break;
 152                 case 'a':
 153                 case 'b':
 154                 case 'c':
 155                 case 'd':
 156                 case 'e':
 157                 case 'f':
 158                         j->serial += (str[i] - 87) * place;
 159                         break;
 160                 }
 161                 place = place * 0x10;
 162         }
 163         str = str + strlen(str) + 1;
 164         printk(" version %s\n", str);
 165       cs_failed:
 166         return;
 167 }
 168
 169 static void ixj_config(dev_link_t * link)
 170 {
 171         IXJ *j;
 172         client_handle_t handle;
 173         ixj_info_t *info;
 174         tuple_t tuple;
 175         u_short buf[128];
 176         cisparse_t parse;
 177         config_info_t conf;
 178         cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
 179         cistpl_cftable_entry_t dflt =
 180         {
 181                 0
 182         };
 183         int last_ret, last_fn;
 184         handle = link->handle;
 185         info = link->priv;
 186         DEBUG(0, "ixj_config(0x%p)\n", link);
 187         tuple.TupleData = (cisdata_t *) buf;
 188         tuple.TupleOffset = 0;
 189         tuple.TupleDataMax = 255;
 190         tuple.Attributes = 0;
 191         tuple.DesiredTuple = CISTPL_CONFIG;
 192         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 193         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 194         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 195         link->conf.ConfigBase = parse.config.base;
 196         link->conf.Present = parse.config.rmask[0];
 197         link->state |= DEV_CONFIG;
 198         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 199         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 200         tuple.Attributes = 0;
 201         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 202         while (1) {
 203                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
 204                                 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
 205                         goto next_entry;
 206                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 207                         cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
 208                         link->conf.ConfigIndex = cfg->index;
 209                         link->io.BasePort1 = io->win[0].base;
 210                         link->io.NumPorts1 = io->win[0].len;
 211                         if (io->nwin == 2) {
 212                                 link->io.BasePort2 = io->win[1].base;
 213                                 link->io.NumPorts2 = io->win[1].len;
 214                         }
 215                         if (pcmcia_request_io(link->handle, &link->io) != 0)
 216                                 goto next_entry;
 217                         /* If we've got this far, we're done */
 218                         break;
 219                 }
 220               next_entry:
 221                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
 222                         dflt = *cfg;
 223                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
 224         }
 225
 226         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
 227
 228         /*
 229          *      Register the card with the core.
 230          */
 231         j=ixj_pcmcia_probe(link->io.BasePort1,link->io.BasePort1 + 0x10);
 232
 233         info->ndev = 1;
 234         info->node.major = PHONE_MAJOR;
 235         link->dev = &info->node;
 236         ixj_get_serial(link, j);
 237         link->state &= ~DEV_CONFIG_PENDING;
 238         return;
 239       cs_failed:
 240         cs_error(link->handle, last_fn, last_ret);
 241         ixj_cs_release(link);
 242 }
 243
 244 static void ixj_cs_release(dev_link_t *link)
 245 {
 246         ixj_info_t *info = link->priv;
 247         DEBUG(0, "ixj_cs_release(0x%p)\n", link);
 248         info->ndev = 0;
 249         link->dev = NULL;
 250         pcmcia_release_configuration(link->handle);
 251         pcmcia_release_io(link->handle, &link->io);
 252         link->state &= ~DEV_CONFIG;
 253 }
 254
 255 static int ixj_suspend(struct pcmcia_device *dev)
 256 {
 257         dev_link_t *link = dev_to_instance(dev);
 258
 259         link->state |= DEV_SUSPEND;
 260         if (link->state & DEV_CONFIG)
 261                 pcmcia_release_configuration(link->handle);
 262
 263         return 0;
 264 }
 265
 266 static int ixj_resume(struct pcmcia_device *dev)
 267 {
 268         dev_link_t *link = dev_to_instance(dev);
 269
 270         link->state &= ~DEV_SUSPEND;
 271         if (DEV_OK(link))
 272                 pcmcia_request_configuration(link->handle, &link->conf);
 273
 274         return 0;
 275 }
 276
 277 static int ixj_event(event_t event, int priority, event_callback_args_t * args)
 278 {
 279         dev_link_t *link = args->client_data;
 280         DEBUG(1, "ixj_event(0x%06x)\n", event);
 281         switch (event) {
 282         case CS_EVENT_CARD_INSERTION:
 283                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 284                 ixj_config(link);
 285                 break;
 286         }
 287         return 0;
 288 }
 289
 290 static struct pcmcia_device_id ixj_ids[] = {
 291         PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
 292         PCMCIA_DEVICE_NULL
 293 };
 294 MODULE_DEVICE_TABLE(pcmcia, ixj_ids);
 295
 296 static struct pcmcia_driver ixj_driver = {
 297         .owner          = THIS_MODULE,
 298         .drv            = {
 299                 .name   = "ixj_cs",
 300         },
 301         .attach         = ixj_attach,
 302         .event          = ixj_event,
 303         .remove         = ixj_detach,
 304         .id_table       = ixj_ids,
 305         .suspend        = ixj_suspend,
 306         .resume         = ixj_resume,
 307 };
 308
 309 static int __init ixj_pcmcia_init(void)
 310 {
 311         return pcmcia_register_driver(&ixj_driver);
 312 }
 313
 314 static void ixj_pcmcia_exit(void)
 315 {
 316         pcmcia_unregister_driver(&ixj_driver);
 317         BUG_ON(dev_list != NULL);
 318 }
 319
 320 module_init(ixj_pcmcia_init);
 321 module_exit(ixj_pcmcia_exit);
 322
 323 MODULE_LICENSE("GPL");