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