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(dev_link_t *);
  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);
  77                 return NULL;
  78         }
  79         return link;
  80 }
  81
  82 static void ixj_detach(dev_link_t * link)
  83 {
  84         dev_link_t **linkp;
  85         int ret;
  86         DEBUG(0, "ixj_detach(0x%p)\n", link);
  87         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
  88                 if (*linkp == link)
  89                         break;
  90         if (*linkp == NULL)
  91                 return;
  92         link->state &= ~DEV_RELEASE_PENDING;
  93         if (link->state & DEV_CONFIG)
  94                 ixj_cs_release(link);
  95         if (link->handle) {
  96                 ret = pcmcia_deregister_client(link->handle);
  97                 if (ret != CS_SUCCESS)
  98                         cs_error(link->handle, DeregisterClient, ret);
  99         }
 100         /* Unlink device structure, free bits */
 101         *linkp = link->next;
 102         kfree(link->priv);
 103         kfree(link);
 104 }
 105
 106 #define CS_CHECK(fn, ret) \
 107 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 108
 109 static void ixj_get_serial(dev_link_t * link, IXJ * j)
 110 {
 111         client_handle_t handle;
 112         tuple_t tuple;
 113         u_short buf[128];
 114         char *str;
 115         int last_ret, last_fn, i, place;
 116         handle = link->handle;
 117         DEBUG(0, "ixj_get_serial(0x%p)\n", link);
 118         tuple.TupleData = (cisdata_t *) buf;
 119         tuple.TupleOffset = 0;
 120         tuple.TupleDataMax = 80;
 121         tuple.Attributes = 0;
 122         tuple.DesiredTuple = CISTPL_VERS_1;
 123         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 124         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 125         str = (char *) buf;
 126         printk("PCMCIA Version %d.%d\n", str[0], str[1]);
 127         str += 2;
 128         printk("%s", str);
 129         str = str + strlen(str) + 1;
 130         printk(" %s", str);
 131         str = str + strlen(str) + 1;
 132         place = 1;
 133         for (i = strlen(str) - 1; i >= 0; i--) {
 134                 switch (str[i]) {
 135                 case '0':
 136                 case '1':
 137                 case '2':
 138                 case '3':
 139                 case '4':
 140                 case '5':
 141                 case '6':
 142                 case '7':
 143                 case '8':
 144                 case '9':
 145                         j->serial += (str[i] - 48) * place;
 146                         break;
 147                 case 'A':
 148                 case 'B':
 149                 case 'C':
 150                 case 'D':
 151                 case 'E':
 152                 case 'F':
 153                         j->serial += (str[i] - 55) * place;
 154                         break;
 155                 case 'a':
 156                 case 'b':
 157                 case 'c':
 158                 case 'd':
 159                 case 'e':
 160                 case 'f':
 161                         j->serial += (str[i] - 87) * place;
 162                         break;
 163                 }
 164                 place = place * 0x10;
 165         }
 166         str = str + strlen(str) + 1;
 167         printk(" version %s\n", str);
 168       cs_failed:
 169         return;
 170 }
 171
 172 static void ixj_config(dev_link_t * link)
 173 {
 174         IXJ *j;
 175         client_handle_t handle;
 176         ixj_info_t *info;
 177         tuple_t tuple;
 178         u_short buf[128];
 179         cisparse_t parse;
 180         config_info_t conf;
 181         cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
 182         cistpl_cftable_entry_t dflt =
 183         {
 184                 0
 185         };
 186         int last_ret, last_fn;
 187         handle = link->handle;
 188         info = link->priv;
 189         DEBUG(0, "ixj_config(0x%p)\n", link);
 190         tuple.TupleData = (cisdata_t *) buf;
 191         tuple.TupleOffset = 0;
 192         tuple.TupleDataMax = 255;
 193         tuple.Attributes = 0;
 194         tuple.DesiredTuple = CISTPL_CONFIG;
 195         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 196         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 197         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 198         link->conf.ConfigBase = parse.config.base;
 199         link->conf.Present = parse.config.rmask[0];
 200         link->state |= DEV_CONFIG;
 201         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 202         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 203         tuple.Attributes = 0;
 204         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 205         while (1) {
 206                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
 207                                 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
 208                         goto next_entry;
 209                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 210                         cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
 211                         link->conf.ConfigIndex = cfg->index;
 212                         link->io.BasePort1 = io->win[0].base;
 213                         link->io.NumPorts1 = io->win[0].len;
 214                         if (io->nwin == 2) {
 215                                 link->io.BasePort2 = io->win[1].base;
 216                                 link->io.NumPorts2 = io->win[1].len;
 217                         }
 218                         if (pcmcia_request_io(link->handle, &link->io) != 0)
 219                                 goto next_entry;
 220                         /* If we've got this far, we're done */
 221                         break;
 222                 }
 223               next_entry:
 224                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
 225                         dflt = *cfg;
 226                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
 227         }
 228
 229         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
 230
 231         /*
 232          *      Register the card with the core.
 233          */
 234         j=ixj_pcmcia_probe(link->io.BasePort1,link->io.BasePort1 + 0x10);
 235
 236         info->ndev = 1;
 237         info->node.major = PHONE_MAJOR;
 238         link->dev = &info->node;
 239         ixj_get_serial(link, j);
 240         link->state &= ~DEV_CONFIG_PENDING;
 241         return;
 242       cs_failed:
 243         cs_error(link->handle, last_fn, last_ret);
 244         ixj_cs_release(link);
 245 }
 246
 247 static void ixj_cs_release(dev_link_t *link)
 248 {
 249         ixj_info_t *info = link->priv;
 250         DEBUG(0, "ixj_cs_release(0x%p)\n", link);
 251         info->ndev = 0;
 252         link->dev = NULL;
 253         pcmcia_release_configuration(link->handle);
 254         pcmcia_release_io(link->handle, &link->io);
 255         link->state &= ~DEV_CONFIG;
 256 }
 257
 258 static int ixj_event(event_t event, int priority, event_callback_args_t * args)
 259 {
 260         dev_link_t *link = args->client_data;
 261         DEBUG(1, "ixj_event(0x%06x)\n", event);
 262         switch (event) {
 263         case CS_EVENT_CARD_REMOVAL:
 264                 link->state &= ~DEV_PRESENT;
 265                 if (link->state & DEV_CONFIG) {
 266                         link->state |= DEV_RELEASE_PENDING;
 267                         ixj_cs_release(link);
 268                 }
 269                 break;
 270         case CS_EVENT_CARD_INSERTION:
 271                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 272                 ixj_config(link);
 273                 break;
 274         case CS_EVENT_PM_SUSPEND:
 275                 link->state |= DEV_SUSPEND;
 276                 /* Fall through... */
 277         case CS_EVENT_RESET_PHYSICAL:
 278                 if (link->state & DEV_CONFIG)
 279                         pcmcia_release_configuration(link->handle);
 280                 break;
 281         case CS_EVENT_PM_RESUME:
 282                 link->state &= ~DEV_SUSPEND;
 283                 /* Fall through... */
 284         case CS_EVENT_CARD_RESET:
 285                 if (DEV_OK(link))
 286                         pcmcia_request_configuration(link->handle, &link->conf);
 287                 break;
 288         }
 289         return 0;
 290 }
 291
 292 static struct pcmcia_device_id ixj_ids[] = {
 293         PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
 294         PCMCIA_DEVICE_NULL
 295 };
 296 MODULE_DEVICE_TABLE(pcmcia, ixj_ids);
 297
 298 static struct pcmcia_driver ixj_driver = {
 299         .owner          = THIS_MODULE,
 300         .drv            = {
 301                 .name   = "ixj_cs",
 302         },
 303         .attach         = ixj_attach,
 304         .event          = ixj_event,
 305         .detach         = ixj_detach,
 306         .id_table       = ixj_ids,
 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");