drivers/media/dvb/firesat/firesat_1394.c

   1 /*
   2  * FireSAT DVB driver
   3  *
   4  * Copyright (c) 2004 Andreas Monitzer <andy@monitzer.com>
   5  * Copyright (c) 2007-2008 Ben Backx <ben@bbackx.com>
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License as
   9  *      published by the Free Software Foundation; either version 2 of
  10  *      the License, or (at your option) any later version.
  11  */
  12
  13 #include <linux/init.h>
  14 #include <linux/slab.h>
  15 #include <linux/wait.h>
  16 #include <linux/module.h>
  17 #include <linux/delay.h>
  18 #include <linux/time.h>
  19 #include <linux/errno.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/semaphore.h>
  22 #include <ieee1394_hotplug.h>
  23 #include <nodemgr.h>
  24 #include <highlevel.h>
  25 #include <ohci1394.h>
  26 #include <hosts.h>
  27 #include <dvbdev.h>
  28
  29 #include "firesat.h"
  30 #include "avc_api.h"
  31 #include "cmp.h"
  32 #include "firesat-rc.h"
  33 #include "firesat-ci.h"
  34
  35 #define FIRESAT_Vendor_ID   0x001287
  36
  37 static struct ieee1394_device_id firesat_id_table[] = {
  38
  39         {
  40                 /* FloppyDTV S/CI and FloppyDTV S2 */
  41                 .match_flags = IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID,
  42                 .model_id = 0x000024,
  43                 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
  44         },{
  45                 /* FloppyDTV T/CI */
  46                 .match_flags = IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID,
  47                 .model_id = 0x000025,
  48                 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
  49         },{
  50                 /* FloppyDTV C/CI */
  51                 .match_flags = IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID,
  52                 .model_id = 0x000026,
  53                 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
  54         },{
  55                 /* FireDTV S/CI and FloppyDTV S2 */
  56                 .match_flags = IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID,
  57                 .model_id = 0x000034,
  58                 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
  59         },{
  60                 /* FireDTV T/CI */
  61                 .match_flags = IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID,
  62                 .model_id = 0x000035,
  63                 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
  64         },{
  65                 /* FireDTV C/CI */
  66                 .match_flags = IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID,
  67                 .model_id = 0x000036,
  68                 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
  69         }, { }
  70 };
  71
  72 MODULE_DEVICE_TABLE(ieee1394, firesat_id_table);
  73
  74 /* list of all firesat devices */
  75 LIST_HEAD(firesat_list);
  76 spinlock_t firesat_list_lock = SPIN_LOCK_UNLOCKED;
  77
  78 static void firesat_add_host(struct hpsb_host *host);
  79 static void firesat_remove_host(struct hpsb_host *host);
  80 static void firesat_host_reset(struct hpsb_host *host);
  81
  82 /*
  83 static void iso_receive(struct hpsb_host *host, int channel, quadlet_t *data,
  84                         size_t length);
  85 */
  86
  87 static void fcp_request(struct hpsb_host *host,
  88                         int nodeid,
  89                         int direction,
  90                         int cts,
  91                         u8 *data,
  92                         size_t length);
  93
  94 static struct hpsb_highlevel firesat_highlevel = {
  95         .name           = "FireSAT",
  96         .add_host       = firesat_add_host,
  97         .remove_host    = firesat_remove_host,
  98         .host_reset     = firesat_host_reset,
  99 // FIXME        .iso_receive =  iso_receive,
 100         .fcp_request    = fcp_request,
 101 };
 102
 103 static void firesat_add_host (struct hpsb_host *host)
 104 {
 105         struct ti_ohci *ohci = (struct ti_ohci *)host->hostdata;
 106
 107         /* We only work with the OHCI-1394 driver */
 108         if (strcmp(host->driver->name, OHCI1394_DRIVER_NAME))
 109                 return;
 110
 111         if (!hpsb_create_hostinfo(&firesat_highlevel, host, 0)) {
 112                 printk(KERN_ERR "Cannot allocate hostinfo\n");
 113                 return;
 114         }
 115
 116         hpsb_set_hostinfo(&firesat_highlevel, host, ohci);
 117         hpsb_set_hostinfo_key(&firesat_highlevel, host, ohci->host->id);
 118 }
 119
 120 static void firesat_remove_host (struct hpsb_host *host)
 121 {
 122
 123 }
 124
 125 static void firesat_host_reset(struct hpsb_host *host)
 126 {
 127     printk(KERN_INFO "FireSAT host_reset (nodeid = 0x%x, hosts active = %d)\n",host->node_id,host->nodes_active);
 128 }
 129
 130 struct firewireheader {
 131     union {
 132         struct {
 133             unsigned char tcode:4;
 134             unsigned char sy:4;
 135             unsigned char tag:2;
 136             unsigned char channel:6;
 137
 138             unsigned char length_l;
 139             unsigned char length_h;
 140         } hdr;
 141         unsigned long val;
 142     };
 143 };
 144
 145 struct CIPHeader {
 146     union {
 147         struct {
 148             unsigned char syncbits:2;
 149             unsigned char sid:6;
 150             unsigned char dbs;
 151             unsigned char fn:2;
 152             unsigned char qpc:3;
 153             unsigned char sph:1;
 154             unsigned char rsv:2;
 155             unsigned char dbc;
 156             unsigned char syncbits2:2;
 157             unsigned char fmt:6;
 158             unsigned long fdf:24;
 159         } cip;
 160         unsigned long long val;
 161     };
 162 };
 163
 164 struct MPEG2Header {
 165     union {
 166         struct {
 167             unsigned char sync; // must be 0x47
 168             unsigned char transport_error_indicator:1;
 169             unsigned char payload_unit_start_indicator:1;
 170             unsigned char transport_priority:1;
 171             unsigned short pid:13;
 172             unsigned char transport_scrambling_control:2;
 173             unsigned char adaption_field_control:2;
 174             unsigned char continuity_counter:4;
 175         } hdr;
 176         unsigned long val;
 177     };
 178 };
 179
 180 #if 0
 181 static void iso_receive(struct hpsb_host *host,
 182                         int channel,
 183                         quadlet_t *data,
 184                         size_t length)
 185 {
 186         struct firesat *firesat = NULL;
 187         struct firesat *firesat_entry;
 188         unsigned long flags;
 189
 190 //    printk(KERN_INFO "FireSAT iso_receive: channel %d, length = %d\n", channel, length);
 191
 192         if (length <= 12)
 193                 return; // ignore empty packets
 194         else {
 195
 196                 spin_lock_irqsave(&firesat_list_lock, flags);
 197                 list_for_each_entry(firesat_entry,&firesat_list,list) {
 198                         if(firesat_entry->host == host && firesat_entry->isochannel == channel) {
 199                                 firesat=firesat_entry;
 200                                 break;
 201                         }
 202                 }
 203                 spin_unlock_irqrestore(&firesat_list_lock, flags);
 204
 205                 if (firesat) {
 206                         char *buf= ((char*)data) + sizeof(struct firewireheader)+sizeof(struct CIPHeader);
 207                         int count = (length-sizeof(struct CIPHeader)) / 192;
 208
 209 //                      printk(KERN_INFO "%s: length = %u\n data[0] = %08x\n data[1] = %08x\n data[2] = %08x\n data[3] = %08x\n data[4] = %08x\n",__func__, length, data[0],data[1],data[2],data[3],data[4]);
 210
 211                         while (count--) {
 212
 213                                 if (buf[sizeof(quadlet_t) /*timestamp*/] == 0x47)
 214                                         dvb_dmx_swfilter_packets(&firesat->demux, &buf[sizeof(quadlet_t)], 1);
 215                                 else
 216                                         printk("%s: invalid packet, skipping\n", __func__);
 217                                 buf += 188 + sizeof (quadlet_t) /* timestamp */;
 218                         }
 219                 }
 220         }
 221 }
 222 #endif
 223
 224 static void fcp_request(struct hpsb_host *host,
 225                         int nodeid,
 226                         int direction,
 227                         int cts,
 228                         u8 *data,
 229                         size_t length)
 230 {
 231         struct firesat *firesat = NULL;
 232         struct firesat *firesat_entry;
 233         unsigned long flags;
 234
 235         if (length > 0 && ((data[0] & 0xf0) >> 4) == 0) {
 236
 237                 spin_lock_irqsave(&firesat_list_lock, flags);
 238                 list_for_each_entry(firesat_entry,&firesat_list,list) {
 239                         if (firesat_entry->host == host &&
 240                             firesat_entry->nodeentry->nodeid == nodeid &&
 241                             (firesat_entry->subunit == (data[1]&0x7) ||
 242                              (firesat_entry->subunit == 0 &&
 243                               (data[1]&0x7) == 0x7))) {
 244                                 firesat=firesat_entry;
 245                                 break;
 246                         }
 247                 }
 248                 spin_unlock_irqrestore(&firesat_list_lock, flags);
 249
 250                 if (firesat)
 251                         AVCRecv(firesat,data,length);
 252                 else
 253                         printk("%s: received fcp request from unknown source, ignored\n", __func__);
 254         } // else ignore
 255 }
 256
 257 static int firesat_probe(struct device *dev)
 258 {
 259         struct unit_directory *ud = container_of(dev, struct unit_directory, device);
 260         struct firesat *firesat;
 261         struct dvb_frontend *fe;
 262         unsigned long flags;
 263         int result;
 264         unsigned char subunitcount = 0xff, subunit;
 265         struct firesat **firesats = kmalloc(sizeof (void*) * 2,GFP_KERNEL);
 266
 267         if (!firesats) {
 268                 printk("%s: couldn't allocate memory.\n", __func__);
 269                 return -ENOMEM;
 270         }
 271
 272 //    printk(KERN_INFO "FireSAT: Detected device with GUID %08lx%04lx%04lx\n",(unsigned long)((ud->ne->guid)>>32),(unsigned long)(ud->ne->guid & 0xFFFF),(unsigned long)ud->ne->guid_vendor_id);
 273         printk(KERN_INFO "%s: loading device\n", __func__);
 274
 275         firesats[0] = NULL;
 276         firesats[1] = NULL;
 277
 278         ud->device.driver_data = firesats;
 279
 280         for (subunit = 0; subunit < subunitcount; subunit++) {
 281
 282                 if (!(firesat = kmalloc(sizeof (struct firesat), GFP_KERNEL)) ||
 283                     !(fe = kmalloc(sizeof (struct dvb_frontend), GFP_KERNEL))) {
 284
 285                         printk("%s: couldn't allocate memory.\n", __func__);
 286                         kfree(firesats);
 287                         return -ENOMEM;
 288                 }
 289
 290                 memset(firesat, 0, sizeof (struct firesat));
 291
 292                 firesat->host           = ud->ne->host;
 293                 firesat->guid           = ud->ne->guid;
 294                 firesat->guid_vendor_id = ud->ne->guid_vendor_id;
 295                 firesat->nodeentry      = ud->ne;
 296                 firesat->isochannel     = -1;
 297                 firesat->tone           = 0xff;
 298                 firesat->voltage        = 0xff;
 299
 300                 if (!(firesat->respfrm = kmalloc(sizeof (AVCRspFrm), GFP_KERNEL))) {
 301                         printk("%s: couldn't allocate memory.\n", __func__);
 302                         kfree(firesat);
 303                         return -ENOMEM;
 304                 }
 305
 306                 sema_init(&firesat->avc_sem, 1);
 307                 atomic_set(&firesat->avc_reply_received, 1);
 308                 sema_init(&firesat->demux_sem, 1);
 309                 atomic_set(&firesat->reschedule_remotecontrol, 0);
 310
 311                 spin_lock_irqsave(&firesat_list_lock, flags);
 312                 INIT_LIST_HEAD(&firesat->list);
 313                 list_add_tail(&firesat->list, &firesat_list);
 314                 spin_unlock_irqrestore(&firesat_list_lock, flags);
 315
 316                 if (subunit == 0) {
 317                         firesat->subunit = 0x7; // 0x7 = don't care
 318                         if (AVCSubUnitInfo(firesat, &subunitcount)) {
 319                                 printk("%s: AVC subunit info command failed.\n",__func__);
 320                                 spin_lock_irqsave(&firesat_list_lock, flags);
 321                                 list_del(&firesat->list);
 322                                 spin_unlock_irqrestore(&firesat_list_lock, flags);
 323                                 kfree(firesat);
 324                                 return -EIO;
 325                         }
 326                 }
 327
 328                 printk(KERN_INFO "%s: subunit count = %d\n", __func__, subunitcount);
 329
 330                 firesat->subunit = subunit;
 331
 332                 if (AVCIdentifySubunit(firesat, NULL, (int*)&firesat->type, &firesat->has_ci)) {
 333                         printk("%s: cannot identify subunit %d\n", __func__, subunit);
 334                         spin_lock_irqsave(&firesat_list_lock, flags);
 335                         list_del(&firesat->list);
 336                         spin_unlock_irqrestore(&firesat_list_lock, flags);
 337                         kfree(firesat);
 338                         continue;
 339                 }
 340
 341 // ----
 342                 firesat_dvbdev_init(firesat, dev, fe);
 343 // ----
 344                 firesats[subunit] = firesat;
 345         } // loop for all tuners
 346
 347         //beta ;-) Disable remote control stuff to avoid crashing
 348         //if(firesats[0])
 349         //      AVCRegisterRemoteControl(firesats[0]);
 350
 351     return 0;
 352 }
 353
 354 static int firesat_remove(struct device *dev)
 355 {
 356         struct unit_directory *ud = container_of(dev, struct unit_directory, device);
 357         struct dvb_frontend* fe;
 358         struct firesat **firesats = ud->device.driver_data;
 359         int k;
 360         unsigned long flags;
 361
 362         if (firesats) {
 363                 for (k = 0; k < 2; k++)
 364                         if (firesats[k]) {
 365                                 if (firesats[k]->has_ci)
 366                                         firesat_ca_release(firesats[k]);
 367
 368 #if 0
 369                                 if (!(fe = kmalloc(sizeof (struct dvb_frontend), GFP_KERNEL))) {
 370                                         fe->ops = firesat_ops;
 371                                         fe->dvb = firesats[k]->adapter;
 372
 373                                         dvb_unregister_frontend(fe);
 374                                         kfree(fe);
 375                                 }
 376 #endif
 377                                 dvb_net_release(&firesats[k]->dvbnet);
 378                                 firesats[k]->demux.dmx.close(&firesats[k]->demux.dmx);
 379                                 firesats[k]->demux.dmx.remove_frontend(&firesats[k]->demux.dmx, &firesats[k]->frontend);
 380                                 dvb_dmxdev_release(&firesats[k]->dmxdev);
 381                                 dvb_dmx_release(&firesats[k]->demux);
 382                                 dvb_unregister_adapter(firesats[k]->adapter);
 383
 384                                 spin_lock_irqsave(&firesat_list_lock, flags);
 385                                 list_del(&firesats[k]->list);
 386                                 spin_unlock_irqrestore(&firesat_list_lock, flags);
 387
 388                                 kfree(firesats[k]->adapter);
 389                                 kfree(firesats[k]->respfrm);
 390                                 kfree(firesats[k]);
 391                         }
 392                 kfree(firesats);
 393         } else
 394                 printk("%s: can't get firesat handle\n", __func__);
 395
 396         printk(KERN_INFO "FireSAT: Removing device with vendor id 0x%x, model id 0x%x.\n",ud->vendor_id,ud->model_id);
 397
 398         return 0;
 399 }
 400
 401 static int firesat_update(struct unit_directory *ud)
 402 {
 403         struct firesat **firesats = ud->device.driver_data;
 404         int k;
 405         // loop over subunits
 406
 407         for (k = 0; k < 2; k++)
 408                 if (firesats[k]) {
 409                         firesats[k]->nodeentry = ud->ne;
 410
 411                         if (firesats[k]->isochannel >= 0)
 412                                 try_CMPEstablishPPconnection(firesats[k], firesats[k]->subunit, firesats[k]->isochannel);
 413                 }
 414
 415         return 0;
 416 }
 417
 418 static struct hpsb_protocol_driver firesat_driver = {
 419
 420         .name           = "FireSAT",
 421         .id_table       = firesat_id_table,
 422         .update         = firesat_update,
 423
 424         .driver         = {
 425                 //.name and .bus are filled in for us in more recent linux versions
 426                 //.name = "FireSAT",
 427                 //.bus  = &ieee1394_bus_type,
 428                 .probe  = firesat_probe,
 429                 .remove = firesat_remove,
 430         },
 431 };
 432
 433 static int __init firesat_init(void)
 434 {
 435         int ret;
 436
 437         printk(KERN_INFO "FireSAT loaded\n");
 438         hpsb_register_highlevel(&firesat_highlevel);
 439         ret = hpsb_register_protocol(&firesat_driver);
 440         if (ret) {
 441                 printk(KERN_ERR "FireSAT: failed to register protocol\n");
 442                 hpsb_unregister_highlevel(&firesat_highlevel);
 443                 return ret;
 444         }
 445
 446         //Crash in this function, just disable RC for the time being...
 447         //Don't forget to uncomment in firesat_exit and firesat_probe when you enable this.
 448         /*if((ret=firesat_register_rc()))
 449                 printk("%s: firesat_register_rc return error code %d (ignored)\n", __func__, ret);*/
 450
 451         return 0;
 452 }
 453
 454 static void __exit firesat_exit(void)
 455 {
 456         hpsb_unregister_protocol(&firesat_driver);
 457         hpsb_unregister_highlevel(&firesat_highlevel);
 458         printk(KERN_INFO "FireSAT quit\n");
 459 }
 460
 461 module_init(firesat_init);
 462 module_exit(firesat_exit);
 463
 464 MODULE_AUTHOR("Andreas Monitzer <andy@monitzer.com>");
 465 MODULE_AUTHOR("Ben Backx <ben@bbackx.com>");
 466 MODULE_DESCRIPTION("FireSAT DVB Driver");
 467 MODULE_LICENSE("GPL");
 468 MODULE_SUPPORTED_DEVICE("FireSAT DVB");