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 void ixj_detach(struct pcmcia_device *p_dev);
  38 static void ixj_config(dev_link_t * link);
  39 static void ixj_cs_release(dev_link_t * link);
  40
  41 static int ixj_attach(struct pcmcia_device *p_dev)
  42 {
  43         dev_link_t *link;
  44
  45         DEBUG(0, "ixj_attach()\n");
  46         /* Create new ixj device */
  47         link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
  48         if (!link)
  49                 return -ENOMEM;
  50         memset(link, 0, sizeof(struct dev_link_t));
  51         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
  52         link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
  53         link->io.IOAddrLines = 3;
  54         link->conf.Vcc = 50;
  55         link->conf.IntType = INT_MEMORY_AND_IO;
  56         link->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
  57         if (!link->priv) {
  58                 kfree(link);
  59                 return -ENOMEM;
  60         }
  61         memset(link->priv, 0, sizeof(struct ixj_info_t));
  62
  63         link->handle = p_dev;
  64         p_dev->instance = link;
  65
  66         link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
  67         ixj_config(link);
  68
  69         return 0;
  70 }
  71
  72 static void ixj_detach(struct pcmcia_device *p_dev)
  73 {
  74         dev_link_t *link = dev_to_instance(p_dev);
  75
  76         DEBUG(0, "ixj_detach(0x%p)\n", link);
  77
  78         link->state &= ~DEV_RELEASE_PENDING;
  79         if (link->state & DEV_CONFIG)
  80                 ixj_cs_release(link);
  81
  82         kfree(link->priv);
  83         kfree(link);
  84 }
  85
  86 #define CS_CHECK(fn, ret) \
  87 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
  88
  89 static void ixj_get_serial(dev_link_t * link, IXJ * j)
  90 {
  91         client_handle_t handle;
  92         tuple_t tuple;
  93         u_short buf[128];
  94         char *str;
  95         int last_ret, last_fn, i, place;
  96         handle = link->handle;
  97         DEBUG(0, "ixj_get_serial(0x%p)\n", link);
  98         tuple.TupleData = (cisdata_t *) buf;
  99         tuple.TupleOffset = 0;
 100         tuple.TupleDataMax = 80;
 101         tuple.Attributes = 0;
 102         tuple.DesiredTuple = CISTPL_VERS_1;
 103         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 104         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 105         str = (char *) buf;
 106         printk("PCMCIA Version %d.%d\n", str[0], str[1]);
 107         str += 2;
 108         printk("%s", str);
 109         str = str + strlen(str) + 1;
 110         printk(" %s", str);
 111         str = str + strlen(str) + 1;
 112         place = 1;
 113         for (i = strlen(str) - 1; i >= 0; i--) {
 114                 switch (str[i]) {
 115                 case '0':
 116                 case '1':
 117                 case '2':
 118                 case '3':
 119                 case '4':
 120                 case '5':
 121                 case '6':
 122                 case '7':
 123                 case '8':
 124                 case '9':
 125                         j->serial += (str[i] - 48) * place;
 126                         break;
 127                 case 'A':
 128                 case 'B':
 129                 case 'C':
 130                 case 'D':
 131                 case 'E':
 132                 case 'F':
 133                         j->serial += (str[i] - 55) * 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] - 87) * place;
 142                         break;
 143                 }
 144                 place = place * 0x10;
 145         }
 146         str = str + strlen(str) + 1;
 147         printk(" version %s\n", str);
 148       cs_failed:
 149         return;
 150 }
 151
 152 static void ixj_config(dev_link_t * link)
 153 {
 154         IXJ *j;
 155         client_handle_t handle;
 156         ixj_info_t *info;
 157         tuple_t tuple;
 158         u_short buf[128];
 159         cisparse_t parse;
 160         config_info_t conf;
 161         cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
 162         cistpl_cftable_entry_t dflt =
 163         {
 164                 0
 165         };
 166         int last_ret, last_fn;
 167         handle = link->handle;
 168         info = link->priv;
 169         DEBUG(0, "ixj_config(0x%p)\n", link);
 170         tuple.TupleData = (cisdata_t *) buf;
 171         tuple.TupleOffset = 0;
 172         tuple.TupleDataMax = 255;
 173         tuple.Attributes = 0;
 174         tuple.DesiredTuple = CISTPL_CONFIG;
 175         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 176         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 177         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 178         link->conf.ConfigBase = parse.config.base;
 179         link->conf.Present = parse.config.rmask[0];
 180         link->state |= DEV_CONFIG;
 181         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 182         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 183         tuple.Attributes = 0;
 184         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 185         while (1) {
 186                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
 187                                 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
 188                         goto next_entry;
 189                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 190                         cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
 191                         link->conf.ConfigIndex = cfg->index;
 192                         link->io.BasePort1 = io->win[0].base;
 193                         link->io.NumPorts1 = io->win[0].len;
 194                         if (io->nwin == 2) {
 195                                 link->io.BasePort2 = io->win[1].base;
 196                                 link->io.NumPorts2 = io->win[1].len;
 197                         }
 198                         if (pcmcia_request_io(link->handle, &link->io) != 0)
 199                                 goto next_entry;
 200                         /* If we've got this far, we're done */
 201                         break;
 202                 }
 203               next_entry:
 204                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
 205                         dflt = *cfg;
 206                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
 207         }
 208
 209         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
 210
 211         /*
 212          *      Register the card with the core.
 213          */
 214         j=ixj_pcmcia_probe(link->io.BasePort1,link->io.BasePort1 + 0x10);
 215
 216         info->ndev = 1;
 217         info->node.major = PHONE_MAJOR;
 218         link->dev = &info->node;
 219         ixj_get_serial(link, j);
 220         link->state &= ~DEV_CONFIG_PENDING;
 221         return;
 222       cs_failed:
 223         cs_error(link->handle, last_fn, last_ret);
 224         ixj_cs_release(link);
 225 }
 226
 227 static void ixj_cs_release(dev_link_t *link)
 228 {
 229         ixj_info_t *info = link->priv;
 230         DEBUG(0, "ixj_cs_release(0x%p)\n", link);
 231         info->ndev = 0;
 232         link->dev = NULL;
 233         pcmcia_release_configuration(link->handle);
 234         pcmcia_release_io(link->handle, &link->io);
 235         link->state &= ~DEV_CONFIG;
 236 }
 237
 238 static int ixj_suspend(struct pcmcia_device *dev)
 239 {
 240         dev_link_t *link = dev_to_instance(dev);
 241
 242         link->state |= DEV_SUSPEND;
 243         if (link->state & DEV_CONFIG)
 244                 pcmcia_release_configuration(link->handle);
 245
 246         return 0;
 247 }
 248
 249 static int ixj_resume(struct pcmcia_device *dev)
 250 {
 251         dev_link_t *link = dev_to_instance(dev);
 252
 253         link->state &= ~DEV_SUSPEND;
 254         if (DEV_OK(link))
 255                 pcmcia_request_configuration(link->handle, &link->conf);
 256
 257         return 0;
 258 }
 259
 260 static struct pcmcia_device_id ixj_ids[] = {
 261         PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
 262         PCMCIA_DEVICE_NULL
 263 };
 264 MODULE_DEVICE_TABLE(pcmcia, ixj_ids);
 265
 266 static struct pcmcia_driver ixj_driver = {
 267         .owner          = THIS_MODULE,
 268         .drv            = {
 269                 .name   = "ixj_cs",
 270         },
 271         .probe          = ixj_attach,
 272         .remove         = ixj_detach,
 273         .id_table       = ixj_ids,
 274         .suspend        = ixj_suspend,
 275         .resume         = ixj_resume,
 276 };
 277
 278 static int __init ixj_pcmcia_init(void)
 279 {
 280         return pcmcia_register_driver(&ixj_driver);
 281 }
 282
 283 static void ixj_pcmcia_exit(void)
 284 {
 285         pcmcia_unregister_driver(&ixj_driver);
 286 }
 287
 288 module_init(ixj_pcmcia_init);
 289 module_exit(ixj_pcmcia_exit);
 290
 291 MODULE_LICENSE("GPL");