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