drivers/media/pci/saa7164/saa7164-core.c

   1 /*
   2  *  Driver for the NXP SAA7164 PCIe bridge
   3  *
   4  *  Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/list.h>
  24 #include <linux/module.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/kmod.h>
  27 #include <linux/kernel.h>
  28 #include <linux/slab.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/delay.h>
  31 #include <asm/div64.h>
  32
  33 #ifdef CONFIG_PROC_FS
  34 #include <linux/proc_fs.h>
  35 #endif
  36 #include "saa7164.h"
  37
  38 MODULE_DESCRIPTION("Driver for NXP SAA7164 based TV cards");
  39 MODULE_AUTHOR("Steven Toth <stoth@kernellabs.com>");
  40 MODULE_LICENSE("GPL");
  41
  42 /*
  43  *  1 Basic
  44  *  2
  45  *  4 i2c
  46  *  8 api
  47  * 16 cmd
  48  * 32 bus
  49  */
  50
  51 unsigned int saa_debug;
  52 module_param_named(debug, saa_debug, int, 0644);
  53 MODULE_PARM_DESC(debug, "enable debug messages");
  54
  55 unsigned int fw_debug;
  56 module_param(fw_debug, int, 0644);
  57 MODULE_PARM_DESC(fw_debug, "Firmware debug level def:2");
  58
  59 unsigned int encoder_buffers = SAA7164_MAX_ENCODER_BUFFERS;
  60 module_param(encoder_buffers, int, 0644);
  61 MODULE_PARM_DESC(encoder_buffers, "Total buffers in read queue 16-512 def:64");
  62
  63 unsigned int vbi_buffers = SAA7164_MAX_VBI_BUFFERS;
  64 module_param(vbi_buffers, int, 0644);
  65 MODULE_PARM_DESC(vbi_buffers, "Total buffers in read queue 16-512 def:64");
  66
  67 unsigned int waitsecs = 10;
  68 module_param(waitsecs, int, 0644);
  69 MODULE_PARM_DESC(waitsecs, "timeout on firmware messages");
  70
  71 static unsigned int card[]  = {[0 ... (SAA7164_MAXBOARDS - 1)] = UNSET };
  72 module_param_array(card,  int, NULL, 0444);
  73 MODULE_PARM_DESC(card, "card type");
  74
  75 unsigned int print_histogram = 64;
  76 module_param(print_histogram, int, 0644);
  77 MODULE_PARM_DESC(print_histogram, "print histogram values once");
  78
  79 unsigned int crc_checking = 1;
  80 module_param(crc_checking, int, 0644);
  81 MODULE_PARM_DESC(crc_checking, "enable crc sanity checking on buffers");
  82
  83 unsigned int guard_checking = 1;
  84 module_param(guard_checking, int, 0644);
  85 MODULE_PARM_DESC(guard_checking,
  86         "enable dma sanity checking for buffer overruns");
  87
  88 static unsigned int saa7164_devcount;
  89
  90 static DEFINE_MUTEX(devlist);
  91 LIST_HEAD(saa7164_devlist);
  92
  93 #define INT_SIZE 16
  94
  95 static void saa7164_pack_verifier(struct saa7164_buffer *buf)
  96 {
  97         u8 *p = (u8 *)buf->cpu;
  98         int i;
  99
 100         for (i = 0; i < buf->actual_size; i += 2048) {
 101
 102                 if ((*(p + i + 0) != 0x00) || (*(p + i + 1) != 0x00) ||
 103                         (*(p + i + 2) != 0x01) || (*(p + i + 3) != 0xBA)) {
 104                         printk(KERN_ERR "No pack at 0x%x\n", i);
 105 #if 0
 106                         print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
 107                                        p + 1, 32, false);
 108 #endif
 109                 }
 110         }
 111 }
 112
 113 #define FIXED_VIDEO_PID 0xf1
 114 #define FIXED_AUDIO_PID 0xf2
 115
 116 static void saa7164_ts_verifier(struct saa7164_buffer *buf)
 117 {
 118         struct saa7164_port *port = buf->port;
 119         u32 i;
 120         u8 cc, a;
 121         u16 pid;
 122         u8 __iomem *bufcpu = (u8 *)buf->cpu;
 123
 124         port->sync_errors = 0;
 125         port->v_cc_errors = 0;
 126         port->a_cc_errors = 0;
 127
 128         for (i = 0; i < buf->actual_size; i += 188) {
 129                 if (*(bufcpu + i) != 0x47)
 130                         port->sync_errors++;
 131
 132                 /* TODO: Query pid lower 8 bits, ignoring upper bits intensionally */
 133                 pid = ((*(bufcpu + i + 1) & 0x1f) << 8) | *(bufcpu + i + 2);
 134                 cc = *(bufcpu + i + 3) & 0x0f;
 135
 136                 if (pid == FIXED_VIDEO_PID) {
 137                         a = ((port->last_v_cc + 1) & 0x0f);
 138                         if (a != cc) {
 139                                 printk(KERN_ERR "video cc last = %x current = %x i = %d\n",
 140                                         port->last_v_cc, cc, i);
 141                                 port->v_cc_errors++;
 142                         }
 143
 144                         port->last_v_cc = cc;
 145                 } else
 146                 if (pid == FIXED_AUDIO_PID) {
 147                         a = ((port->last_a_cc + 1) & 0x0f);
 148                         if (a != cc) {
 149                                 printk(KERN_ERR "audio cc last = %x current = %x i = %d\n",
 150                                         port->last_a_cc, cc, i);
 151                                 port->a_cc_errors++;
 152                         }
 153
 154                         port->last_a_cc = cc;
 155                 }
 156
 157         }
 158
 159         /* Only report errors if we've been through this function atleast
 160          * once already and the cached cc values are primed. First time through
 161          * always generates errors.
 162          */
 163         if (port->v_cc_errors && (port->done_first_interrupt > 1))
 164                 printk(KERN_ERR "video pid cc, %d errors\n", port->v_cc_errors);
 165
 166         if (port->a_cc_errors && (port->done_first_interrupt > 1))
 167                 printk(KERN_ERR "audio pid cc, %d errors\n", port->a_cc_errors);
 168
 169         if (port->sync_errors && (port->done_first_interrupt > 1))
 170                 printk(KERN_ERR "sync_errors = %d\n", port->sync_errors);
 171
 172         if (port->done_first_interrupt == 1)
 173                 port->done_first_interrupt++;
 174 }
 175
 176 static void saa7164_histogram_reset(struct saa7164_histogram *hg, char *name)
 177 {
 178         int i;
 179
 180         memset(hg, 0, sizeof(struct saa7164_histogram));
 181         strcpy(hg->name, name);
 182
 183         /* First 30ms x 1ms */
 184         for (i = 0; i < 30; i++)
 185                 hg->counter1[0 + i].val = i;
 186
 187         /* 30 - 200ms x 10ms  */
 188         for (i = 0; i < 18; i++)
 189                 hg->counter1[30 + i].val = 30 + (i * 10);
 190
 191         /* 200 - 2000ms x 100ms  */
 192         for (i = 0; i < 15; i++)
 193                 hg->counter1[48 + i].val = 200 + (i * 200);
 194
 195         /* Catch all massive value (2secs) */
 196         hg->counter1[55].val = 2000;
 197
 198         /* Catch all massive value (4secs) */
 199         hg->counter1[56].val = 4000;
 200
 201         /* Catch all massive value (8secs) */
 202         hg->counter1[57].val = 8000;
 203
 204         /* Catch all massive value (15secs) */
 205         hg->counter1[58].val = 15000;
 206
 207         /* Catch all massive value (30secs) */
 208         hg->counter1[59].val = 30000;
 209
 210         /* Catch all massive value (60secs) */
 211         hg->counter1[60].val = 60000;
 212
 213         /* Catch all massive value (5mins) */
 214         hg->counter1[61].val = 300000;
 215
 216         /* Catch all massive value (15mins) */
 217         hg->counter1[62].val = 900000;
 218
 219         /* Catch all massive values (1hr) */
 220         hg->counter1[63].val = 3600000;
 221 }
 222
 223 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val)
 224 {
 225         int i;
 226         for (i = 0; i < 64; i++) {
 227                 if (val <= hg->counter1[i].val) {
 228                         hg->counter1[i].count++;
 229                         hg->counter1[i].update_time = jiffies;
 230                         break;
 231                 }
 232         }
 233 }
 234
 235 static void saa7164_histogram_print(struct saa7164_port *port,
 236         struct saa7164_histogram *hg)
 237 {
 238         u32 entries = 0;
 239         int i;
 240
 241         printk(KERN_ERR "Histogram named %s (ms, count, last_update_jiffy)\n", hg->name);
 242         for (i = 0; i < 64; i++) {
 243                 if (hg->counter1[i].count == 0)
 244                         continue;
 245
 246                 printk(KERN_ERR " %4d %12d %Ld\n",
 247                         hg->counter1[i].val,
 248                         hg->counter1[i].count,
 249                         hg->counter1[i].update_time);
 250
 251                 entries++;
 252         }
 253         printk(KERN_ERR "Total: %d\n", entries);
 254 }
 255
 256 static void saa7164_work_enchandler_helper(struct saa7164_port *port, int bufnr)
 257 {
 258         struct saa7164_dev *dev = port->dev;
 259         struct saa7164_buffer *buf = NULL;
 260         struct saa7164_user_buffer *ubuf = NULL;
 261         struct list_head *c, *n;
 262         int i = 0;
 263         u8 __iomem *p;
 264
 265         mutex_lock(&port->dmaqueue_lock);
 266         list_for_each_safe(c, n, &port->dmaqueue.list) {
 267
 268                 buf = list_entry(c, struct saa7164_buffer, list);
 269                 if (i++ > port->hwcfg.buffercount) {
 270                         printk(KERN_ERR "%s() illegal i count %d\n",
 271                                 __func__, i);
 272                         break;
 273                 }
 274
 275                 if (buf->idx == bufnr) {
 276
 277                         /* Found the buffer, deal with it */
 278                         dprintk(DBGLVL_IRQ, "%s() bufnr: %d\n", __func__, bufnr);
 279
 280                         if (crc_checking) {
 281                                 /* Throw a new checksum on the dma buffer */
 282                                 buf->crc = crc32(0, buf->cpu, buf->actual_size);
 283                         }
 284
 285                         if (guard_checking) {
 286                                 p = (u8 *)buf->cpu;
 287                                 if ((*(p + buf->actual_size + 0) != 0xff) ||
 288                                         (*(p + buf->actual_size + 1) != 0xff) ||
 289                                         (*(p + buf->actual_size + 2) != 0xff) ||
 290                                         (*(p + buf->actual_size + 3) != 0xff) ||
 291                                         (*(p + buf->actual_size + 0x10) != 0xff) ||
 292                                         (*(p + buf->actual_size + 0x11) != 0xff) ||
 293                                         (*(p + buf->actual_size + 0x12) != 0xff) ||
 294                                         (*(p + buf->actual_size + 0x13) != 0xff)) {
 295                                                 printk(KERN_ERR "%s() buf %p guard buffer breach\n",
 296                                                         __func__, buf);
 297 #if 0
 298                         print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
 299                                        p + buf->actual_size - 32, 64, false);
 300 #endif
 301                                 }
 302                         }
 303
 304                         if ((port->nr != SAA7164_PORT_VBI1) && (port->nr != SAA7164_PORT_VBI2)) {
 305                                 /* Validate the incoming buffer content */
 306                                 if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
 307                                         saa7164_ts_verifier(buf);
 308                                 else if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS)
 309                                         saa7164_pack_verifier(buf);
 310                         }
 311
 312                         /* find a free user buffer and clone to it */
 313                         if (!list_empty(&port->list_buf_free.list)) {
 314
 315                                 /* Pull the first buffer from the used list */
 316                                 ubuf = list_first_entry(&port->list_buf_free.list,
 317                                         struct saa7164_user_buffer, list);
 318
 319                                 if (buf->actual_size <= ubuf->actual_size) {
 320
 321                                         memcpy_fromio(ubuf->data, buf->cpu,
 322                                                 ubuf->actual_size);
 323
 324                                         if (crc_checking) {
 325                                                 /* Throw a new checksum on the read buffer */
 326                                                 ubuf->crc = crc32(0, ubuf->data, ubuf->actual_size);
 327                                         }
 328
 329                                         /* Requeue the buffer on the free list */
 330                                         ubuf->pos = 0;
 331
 332                                         list_move_tail(&ubuf->list,
 333                                                 &port->list_buf_used.list);
 334
 335                                         /* Flag any userland waiters */
 336                                         wake_up_interruptible(&port->wait_read);
 337
 338                                 } else {
 339                                         printk(KERN_ERR "buf %p bufsize fails match\n", buf);
 340                                 }
 341
 342                         } else
 343                                 printk(KERN_ERR "encirq no free buffers, increase param encoder_buffers\n");
 344
 345                         /* Ensure offset into buffer remains 0, fill buffer
 346                          * with known bad data. We check for this data at a later point
 347                          * in time. */
 348                         saa7164_buffer_zero_offsets(port, bufnr);
 349                         memset_io(buf->cpu, 0xff, buf->pci_size);
 350                         if (crc_checking) {
 351                                 /* Throw yet aanother new checksum on the dma buffer */
 352                                 buf->crc = crc32(0, buf->cpu, buf->actual_size);
 353                         }
 354
 355                         break;
 356                 }
 357         }
 358         mutex_unlock(&port->dmaqueue_lock);
 359 }
 360
 361 static void saa7164_work_enchandler(struct work_struct *w)
 362 {
 363         struct saa7164_port *port =
 364                 container_of(w, struct saa7164_port, workenc);
 365         struct saa7164_dev *dev = port->dev;
 366
 367         u32 wp, mcb, rp, cnt = 0;
 368
 369         port->last_svc_msecs_diff = port->last_svc_msecs;
 370         port->last_svc_msecs = jiffies_to_msecs(jiffies);
 371
 372         port->last_svc_msecs_diff = port->last_svc_msecs -
 373                 port->last_svc_msecs_diff;
 374
 375         saa7164_histogram_update(&port->svc_interval,
 376                 port->last_svc_msecs_diff);
 377
 378         port->last_irq_svc_msecs_diff = port->last_svc_msecs -
 379                 port->last_irq_msecs;
 380
 381         saa7164_histogram_update(&port->irq_svc_interval,
 382                 port->last_irq_svc_msecs_diff);
 383
 384         dprintk(DBGLVL_IRQ,
 385                 "%s() %Ldms elapsed irq->deferred %Ldms wp: %d rp: %d\n",
 386                 __func__,
 387                 port->last_svc_msecs_diff,
 388                 port->last_irq_svc_msecs_diff,
 389                 port->last_svc_wp,
 390                 port->last_svc_rp
 391                 );
 392
 393         /* Current write position */
 394         wp = saa7164_readl(port->bufcounter);
 395         if (wp > (port->hwcfg.buffercount - 1)) {
 396                 printk(KERN_ERR "%s() illegal buf count %d\n", __func__, wp);
 397                 return;
 398         }
 399
 400         /* Most current complete buffer */
 401         if (wp == 0)
 402                 mcb = (port->hwcfg.buffercount - 1);
 403         else
 404                 mcb = wp - 1;
 405
 406         while (1) {
 407                 if (port->done_first_interrupt == 0) {
 408                         port->done_first_interrupt++;
 409                         rp = mcb;
 410                 } else
 411                         rp = (port->last_svc_rp + 1) % 8;
 412
 413                 if (rp > (port->hwcfg.buffercount - 1)) {
 414                         printk(KERN_ERR "%s() illegal rp count %d\n", __func__, rp);
 415                         break;
 416                 }
 417
 418                 saa7164_work_enchandler_helper(port, rp);
 419                 port->last_svc_rp = rp;
 420                 cnt++;
 421
 422                 if (rp == mcb)
 423                         break;
 424         }
 425
 426         /* TODO: Convert this into a /proc/saa7164 style readable file */
 427         if (print_histogram == port->nr) {
 428                 saa7164_histogram_print(port, &port->irq_interval);
 429                 saa7164_histogram_print(port, &port->svc_interval);
 430                 saa7164_histogram_print(port, &port->irq_svc_interval);
 431                 saa7164_histogram_print(port, &port->read_interval);
 432                 saa7164_histogram_print(port, &port->poll_interval);
 433                 /* TODO: fix this to preserve any previous state */
 434                 print_histogram = 64 + port->nr;
 435         }
 436 }
 437
 438 static void saa7164_work_vbihandler(struct work_struct *w)
 439 {
 440         struct saa7164_port *port =
 441                 container_of(w, struct saa7164_port, workenc);
 442         struct saa7164_dev *dev = port->dev;
 443
 444         u32 wp, mcb, rp, cnt = 0;
 445
 446         port->last_svc_msecs_diff = port->last_svc_msecs;
 447         port->last_svc_msecs = jiffies_to_msecs(jiffies);
 448         port->last_svc_msecs_diff = port->last_svc_msecs -
 449                 port->last_svc_msecs_diff;
 450
 451         saa7164_histogram_update(&port->svc_interval,
 452                 port->last_svc_msecs_diff);
 453
 454         port->last_irq_svc_msecs_diff = port->last_svc_msecs -
 455                 port->last_irq_msecs;
 456
 457         saa7164_histogram_update(&port->irq_svc_interval,
 458                 port->last_irq_svc_msecs_diff);
 459
 460         dprintk(DBGLVL_IRQ,
 461                 "%s() %Ldms elapsed irq->deferred %Ldms wp: %d rp: %d\n",
 462                 __func__,
 463                 port->last_svc_msecs_diff,
 464                 port->last_irq_svc_msecs_diff,
 465                 port->last_svc_wp,
 466                 port->last_svc_rp
 467                 );
 468
 469         /* Current write position */
 470         wp = saa7164_readl(port->bufcounter);
 471         if (wp > (port->hwcfg.buffercount - 1)) {
 472                 printk(KERN_ERR "%s() illegal buf count %d\n", __func__, wp);
 473                 return;
 474         }
 475
 476         /* Most current complete buffer */
 477         if (wp == 0)
 478                 mcb = (port->hwcfg.buffercount - 1);
 479         else
 480                 mcb = wp - 1;
 481
 482         while (1) {
 483                 if (port->done_first_interrupt == 0) {
 484                         port->done_first_interrupt++;
 485                         rp = mcb;
 486                 } else
 487                         rp = (port->last_svc_rp + 1) % 8;
 488
 489                 if (rp > (port->hwcfg.buffercount - 1)) {
 490                         printk(KERN_ERR "%s() illegal rp count %d\n", __func__, rp);
 491                         break;
 492                 }
 493
 494                 saa7164_work_enchandler_helper(port, rp);
 495                 port->last_svc_rp = rp;
 496                 cnt++;
 497
 498                 if (rp == mcb)
 499                         break;
 500         }
 501
 502         /* TODO: Convert this into a /proc/saa7164 style readable file */
 503         if (print_histogram == port->nr) {
 504                 saa7164_histogram_print(port, &port->irq_interval);
 505                 saa7164_histogram_print(port, &port->svc_interval);
 506                 saa7164_histogram_print(port, &port->irq_svc_interval);
 507                 saa7164_histogram_print(port, &port->read_interval);
 508                 saa7164_histogram_print(port, &port->poll_interval);
 509                 /* TODO: fix this to preserve any previous state */
 510                 print_histogram = 64 + port->nr;
 511         }
 512 }
 513
 514 static void saa7164_work_cmdhandler(struct work_struct *w)
 515 {
 516         struct saa7164_dev *dev = container_of(w, struct saa7164_dev, workcmd);
 517
 518         /* Wake up any complete commands */
 519         saa7164_irq_dequeue(dev);
 520 }
 521
 522 static void saa7164_buffer_deliver(struct saa7164_buffer *buf)
 523 {
 524         struct saa7164_port *port = buf->port;
 525
 526         /* Feed the transport payload into the kernel demux */
 527         dvb_dmx_swfilter_packets(&port->dvb.demux, (u8 *)buf->cpu,
 528                 SAA7164_TS_NUMBER_OF_LINES);
 529
 530 }
 531
 532 static irqreturn_t saa7164_irq_vbi(struct saa7164_port *port)
 533 {
 534         struct saa7164_dev *dev = port->dev;
 535
 536         /* Store old time */
 537         port->last_irq_msecs_diff = port->last_irq_msecs;
 538
 539         /* Collect new stats */
 540         port->last_irq_msecs = jiffies_to_msecs(jiffies);
 541
 542         /* Calculate stats */
 543         port->last_irq_msecs_diff = port->last_irq_msecs -
 544                 port->last_irq_msecs_diff;
 545
 546         saa7164_histogram_update(&port->irq_interval,
 547                 port->last_irq_msecs_diff);
 548
 549         dprintk(DBGLVL_IRQ, "%s() %Ldms elapsed\n", __func__,
 550                 port->last_irq_msecs_diff);
 551
 552         /* Tis calls the vbi irq handler */
 553         schedule_work(&port->workenc);
 554         return 0;
 555 }
 556
 557 static irqreturn_t saa7164_irq_encoder(struct saa7164_port *port)
 558 {
 559         struct saa7164_dev *dev = port->dev;
 560
 561         /* Store old time */
 562         port->last_irq_msecs_diff = port->last_irq_msecs;
 563
 564         /* Collect new stats */
 565         port->last_irq_msecs = jiffies_to_msecs(jiffies);
 566
 567         /* Calculate stats */
 568         port->last_irq_msecs_diff = port->last_irq_msecs -
 569                 port->last_irq_msecs_diff;
 570
 571         saa7164_histogram_update(&port->irq_interval,
 572                 port->last_irq_msecs_diff);
 573
 574         dprintk(DBGLVL_IRQ, "%s() %Ldms elapsed\n", __func__,
 575                 port->last_irq_msecs_diff);
 576
 577         schedule_work(&port->workenc);
 578         return 0;
 579 }
 580
 581 static irqreturn_t saa7164_irq_ts(struct saa7164_port *port)
 582 {
 583         struct saa7164_dev *dev = port->dev;
 584         struct saa7164_buffer *buf;
 585         struct list_head *c, *n;
 586         int wp, i = 0, rp;
 587
 588         /* Find the current write point from the hardware */
 589         wp = saa7164_readl(port->bufcounter);
 590         if (wp > (port->hwcfg.buffercount - 1))
 591                 BUG();
 592
 593         /* Find the previous buffer to the current write point */
 594         if (wp == 0)
 595                 rp = (port->hwcfg.buffercount - 1);
 596         else
 597                 rp = wp - 1;
 598
 599         /* Lookup the WP in the buffer list */
 600         /* TODO: turn this into a worker thread */
 601         list_for_each_safe(c, n, &port->dmaqueue.list) {
 602                 buf = list_entry(c, struct saa7164_buffer, list);
 603                 if (i++ > port->hwcfg.buffercount)
 604                         BUG();
 605
 606                 if (buf->idx == rp) {
 607                         /* Found the buffer, deal with it */
 608                         dprintk(DBGLVL_IRQ, "%s() wp: %d processing: %d\n",
 609                                 __func__, wp, rp);
 610                         saa7164_buffer_deliver(buf);
 611                         break;
 612                 }
 613
 614         }
 615         return 0;
 616 }
 617
 618 /* Primary IRQ handler and dispatch mechanism */
 619 static irqreturn_t saa7164_irq(int irq, void *dev_id)
 620 {
 621         struct saa7164_dev *dev = dev_id;
 622         struct saa7164_port *porta = &dev->ports[SAA7164_PORT_TS1];
 623         struct saa7164_port *portb = &dev->ports[SAA7164_PORT_TS2];
 624         struct saa7164_port *portc = &dev->ports[SAA7164_PORT_ENC1];
 625         struct saa7164_port *portd = &dev->ports[SAA7164_PORT_ENC2];
 626         struct saa7164_port *porte = &dev->ports[SAA7164_PORT_VBI1];
 627         struct saa7164_port *portf = &dev->ports[SAA7164_PORT_VBI2];
 628
 629         u32 intid, intstat[INT_SIZE/4];
 630         int i, handled = 0, bit;
 631
 632         if (dev == NULL) {
 633                 printk(KERN_ERR "%s() No device specified\n", __func__);
 634                 handled = 0;
 635                 goto out;
 636         }
 637
 638         /* Check that the hardware is accessible. If the status bytes are
 639          * 0xFF then the device is not accessible, the the IRQ belongs
 640          * to another driver.
 641          * 4 x u32 interrupt registers.
 642          */
 643         for (i = 0; i < INT_SIZE/4; i++) {
 644
 645                 /* TODO: Convert into saa7164_readl() */
 646                 /* Read the 4 hardware interrupt registers */
 647                 intstat[i] = saa7164_readl(dev->int_status + (i * 4));
 648
 649                 if (intstat[i])
 650                         handled = 1;
 651         }
 652         if (handled == 0)
 653                 goto out;
 654
 655         /* For each of the HW interrupt registers */
 656         for (i = 0; i < INT_SIZE/4; i++) {
 657
 658                 if (intstat[i]) {
 659                         /* Each function of the board has it's own interruptid.
 660                          * Find the function that triggered then call
 661                          * it's handler.
 662                          */
 663                         for (bit = 0; bit < 32; bit++) {
 664
 665                                 if (((intstat[i] >> bit) & 0x00000001) == 0)
 666                                         continue;
 667
 668                                 /* Calculate the interrupt id (0x00 to 0x7f) */
 669
 670                                 intid = (i * 32) + bit;
 671                                 if (intid == dev->intfdesc.bInterruptId) {
 672                                         /* A response to an cmd/api call */
 673                                         schedule_work(&dev->workcmd);
 674                                 } else if (intid == porta->hwcfg.interruptid) {
 675
 676                                         /* Transport path 1 */
 677                                         saa7164_irq_ts(porta);
 678
 679                                 } else if (intid == portb->hwcfg.interruptid) {
 680
 681                                         /* Transport path 2 */
 682                                         saa7164_irq_ts(portb);
 683
 684                                 } else if (intid == portc->hwcfg.interruptid) {
 685
 686                                         /* Encoder path 1 */
 687                                         saa7164_irq_encoder(portc);
 688
 689                                 } else if (intid == portd->hwcfg.interruptid) {
 690
 691                                         /* Encoder path 2 */
 692                                         saa7164_irq_encoder(portd);
 693
 694                                 } else if (intid == porte->hwcfg.interruptid) {
 695
 696                                         /* VBI path 1 */
 697                                         saa7164_irq_vbi(porte);
 698
 699                                 } else if (intid == portf->hwcfg.interruptid) {
 700
 701                                         /* VBI path 2 */
 702                                         saa7164_irq_vbi(portf);
 703
 704                                 } else {
 705                                         /* Find the function */
 706                                         dprintk(DBGLVL_IRQ,
 707                                                 "%s() unhandled interrupt "
 708                                                 "reg 0x%x bit 0x%x "
 709                                                 "intid = 0x%x\n",
 710                                                 __func__, i, bit, intid);
 711                                 }
 712                         }
 713
 714                         /* Ack it */
 715                         saa7164_writel(dev->int_ack + (i * 4), intstat[i]);
 716
 717                 }
 718         }
 719 out:
 720         return IRQ_RETVAL(handled);
 721 }
 722
 723 void saa7164_getfirmwarestatus(struct saa7164_dev *dev)
 724 {
 725         struct saa7164_fw_status *s = &dev->fw_status;
 726
 727         dev->fw_status.status = saa7164_readl(SAA_DEVICE_SYSINIT_STATUS);
 728         dev->fw_status.mode = saa7164_readl(SAA_DEVICE_SYSINIT_MODE);
 729         dev->fw_status.spec = saa7164_readl(SAA_DEVICE_SYSINIT_SPEC);
 730         dev->fw_status.inst = saa7164_readl(SAA_DEVICE_SYSINIT_INST);
 731         dev->fw_status.cpuload = saa7164_readl(SAA_DEVICE_SYSINIT_CPULOAD);
 732         dev->fw_status.remainheap =
 733                 saa7164_readl(SAA_DEVICE_SYSINIT_REMAINHEAP);
 734
 735         dprintk(1, "Firmware status:\n");
 736         dprintk(1, " .status     = 0x%08x\n", s->status);
 737         dprintk(1, " .mode       = 0x%08x\n", s->mode);
 738         dprintk(1, " .spec       = 0x%08x\n", s->spec);
 739         dprintk(1, " .inst       = 0x%08x\n", s->inst);
 740         dprintk(1, " .cpuload    = 0x%08x\n", s->cpuload);
 741         dprintk(1, " .remainheap = 0x%08x\n", s->remainheap);
 742 }
 743
 744 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev)
 745 {
 746         u32 reg;
 747
 748         reg = saa7164_readl(SAA_DEVICE_VERSION);
 749         dprintk(1, "Device running firmware version %d.%d.%d.%d (0x%x)\n",
 750                 (reg & 0x0000fc00) >> 10,
 751                 (reg & 0x000003e0) >> 5,
 752                 (reg & 0x0000001f),
 753                 (reg & 0xffff0000) >> 16,
 754                 reg);
 755
 756         return reg;
 757 }
 758
 759 /* TODO: Debugging func, remove */
 760 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr)
 761 {
 762         int i;
 763
 764         dprintk(1, "--------------------> "
 765                 "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
 766
 767         for (i = 0; i < 0x100; i += 16)
 768                 dprintk(1, "region0[0x%08x] = "
 769                         "%02x %02x %02x %02x %02x %02x %02x %02x"
 770                         " %02x %02x %02x %02x %02x %02x %02x %02x\n", i,
 771                         (u8)saa7164_readb(addr + i + 0),
 772                         (u8)saa7164_readb(addr + i + 1),
 773                         (u8)saa7164_readb(addr + i + 2),
 774                         (u8)saa7164_readb(addr + i + 3),
 775                         (u8)saa7164_readb(addr + i + 4),
 776                         (u8)saa7164_readb(addr + i + 5),
 777                         (u8)saa7164_readb(addr + i + 6),
 778                         (u8)saa7164_readb(addr + i + 7),
 779                         (u8)saa7164_readb(addr + i + 8),
 780                         (u8)saa7164_readb(addr + i + 9),
 781                         (u8)saa7164_readb(addr + i + 10),
 782                         (u8)saa7164_readb(addr + i + 11),
 783                         (u8)saa7164_readb(addr + i + 12),
 784                         (u8)saa7164_readb(addr + i + 13),
 785                         (u8)saa7164_readb(addr + i + 14),
 786                         (u8)saa7164_readb(addr + i + 15)
 787                         );
 788 }
 789
 790 static void saa7164_dump_hwdesc(struct saa7164_dev *dev)
 791 {
 792         dprintk(1, "@0x%p hwdesc sizeof(struct tmComResHWDescr) = %d bytes\n",
 793                 &dev->hwdesc, (u32)sizeof(struct tmComResHWDescr));
 794
 795         dprintk(1, " .bLength = 0x%x\n", dev->hwdesc.bLength);
 796         dprintk(1, " .bDescriptorType = 0x%x\n", dev->hwdesc.bDescriptorType);
 797         dprintk(1, " .bDescriptorSubtype = 0x%x\n",
 798                 dev->hwdesc.bDescriptorSubtype);
 799
 800         dprintk(1, " .bcdSpecVersion = 0x%x\n", dev->hwdesc.bcdSpecVersion);
 801         dprintk(1, " .dwClockFrequency = 0x%x\n", dev->hwdesc.dwClockFrequency);
 802         dprintk(1, " .dwClockUpdateRes = 0x%x\n", dev->hwdesc.dwClockUpdateRes);
 803         dprintk(1, " .bCapabilities = 0x%x\n", dev->hwdesc.bCapabilities);
 804         dprintk(1, " .dwDeviceRegistersLocation = 0x%x\n",
 805                 dev->hwdesc.dwDeviceRegistersLocation);
 806
 807         dprintk(1, " .dwHostMemoryRegion = 0x%x\n",
 808                 dev->hwdesc.dwHostMemoryRegion);
 809
 810         dprintk(1, " .dwHostMemoryRegionSize = 0x%x\n",
 811                 dev->hwdesc.dwHostMemoryRegionSize);
 812
 813         dprintk(1, " .dwHostHibernatMemRegion = 0x%x\n",
 814                 dev->hwdesc.dwHostHibernatMemRegion);
 815
 816         dprintk(1, " .dwHostHibernatMemRegionSize = 0x%x\n",
 817                 dev->hwdesc.dwHostHibernatMemRegionSize);
 818 }
 819
 820 static void saa7164_dump_intfdesc(struct saa7164_dev *dev)
 821 {
 822         dprintk(1, "@0x%p intfdesc "
 823                 "sizeof(struct tmComResInterfaceDescr) = %d bytes\n",
 824                 &dev->intfdesc, (u32)sizeof(struct tmComResInterfaceDescr));
 825
 826         dprintk(1, " .bLength = 0x%x\n", dev->intfdesc.bLength);
 827         dprintk(1, " .bDescriptorType = 0x%x\n", dev->intfdesc.bDescriptorType);
 828         dprintk(1, " .bDescriptorSubtype = 0x%x\n",
 829                 dev->intfdesc.bDescriptorSubtype);
 830
 831         dprintk(1, " .bFlags = 0x%x\n", dev->intfdesc.bFlags);
 832         dprintk(1, " .bInterfaceType = 0x%x\n", dev->intfdesc.bInterfaceType);
 833         dprintk(1, " .bInterfaceId = 0x%x\n", dev->intfdesc.bInterfaceId);
 834         dprintk(1, " .bBaseInterface = 0x%x\n", dev->intfdesc.bBaseInterface);
 835         dprintk(1, " .bInterruptId = 0x%x\n", dev->intfdesc.bInterruptId);
 836         dprintk(1, " .bDebugInterruptId = 0x%x\n",
 837                 dev->intfdesc.bDebugInterruptId);
 838
 839         dprintk(1, " .BARLocation = 0x%x\n", dev->intfdesc.BARLocation);
 840 }
 841
 842 static void saa7164_dump_busdesc(struct saa7164_dev *dev)
 843 {
 844         dprintk(1, "@0x%p busdesc sizeof(struct tmComResBusDescr) = %d bytes\n",
 845                 &dev->busdesc, (u32)sizeof(struct tmComResBusDescr));
 846
 847         dprintk(1, " .CommandRing   = 0x%016Lx\n", dev->busdesc.CommandRing);
 848         dprintk(1, " .ResponseRing  = 0x%016Lx\n", dev->busdesc.ResponseRing);
 849         dprintk(1, " .CommandWrite  = 0x%x\n", dev->busdesc.CommandWrite);
 850         dprintk(1, " .CommandRead   = 0x%x\n", dev->busdesc.CommandRead);
 851         dprintk(1, " .ResponseWrite = 0x%x\n", dev->busdesc.ResponseWrite);
 852         dprintk(1, " .ResponseRead  = 0x%x\n", dev->busdesc.ResponseRead);
 853 }
 854
 855 /* Much of the hardware configuration and PCI registers are configured
 856  * dynamically depending on firmware. We have to cache some initial
 857  * structures then use these to locate other important structures
 858  * from PCI space.
 859  */
 860 static void saa7164_get_descriptors(struct saa7164_dev *dev)
 861 {
 862         memcpy_fromio(&dev->hwdesc, dev->bmmio, sizeof(struct tmComResHWDescr));
 863         memcpy_fromio(&dev->intfdesc, dev->bmmio + sizeof(struct tmComResHWDescr),
 864                 sizeof(struct tmComResInterfaceDescr));
 865         memcpy_fromio(&dev->busdesc, dev->bmmio + dev->intfdesc.BARLocation,
 866                 sizeof(struct tmComResBusDescr));
 867
 868         if (dev->hwdesc.bLength != sizeof(struct tmComResHWDescr)) {
 869                 printk(KERN_ERR "Structure struct tmComResHWDescr is mangled\n");
 870                 printk(KERN_ERR "Need %x got %d\n", dev->hwdesc.bLength,
 871                         (u32)sizeof(struct tmComResHWDescr));
 872         } else
 873                 saa7164_dump_hwdesc(dev);
 874
 875         if (dev->intfdesc.bLength != sizeof(struct tmComResInterfaceDescr)) {
 876                 printk(KERN_ERR "struct struct tmComResInterfaceDescr is mangled\n");
 877                 printk(KERN_ERR "Need %x got %d\n", dev->intfdesc.bLength,
 878                         (u32)sizeof(struct tmComResInterfaceDescr));
 879         } else
 880                 saa7164_dump_intfdesc(dev);
 881
 882         saa7164_dump_busdesc(dev);
 883 }
 884
 885 static int saa7164_pci_quirks(struct saa7164_dev *dev)
 886 {
 887         return 0;
 888 }
 889
 890 static int get_resources(struct saa7164_dev *dev)
 891 {
 892         if (request_mem_region(pci_resource_start(dev->pci, 0),
 893                 pci_resource_len(dev->pci, 0), dev->name)) {
 894
 895                 if (request_mem_region(pci_resource_start(dev->pci, 2),
 896                         pci_resource_len(dev->pci, 2), dev->name))
 897                         return 0;
 898         }
 899
 900         printk(KERN_ERR "%s: can't get MMIO memory @ 0x%llx or 0x%llx\n",
 901                 dev->name,
 902                 (u64)pci_resource_start(dev->pci, 0),
 903                 (u64)pci_resource_start(dev->pci, 2));
 904
 905         return -EBUSY;
 906 }
 907
 908 static int saa7164_port_init(struct saa7164_dev *dev, int portnr)
 909 {
 910         struct saa7164_port *port = NULL;
 911
 912         if ((portnr < 0) || (portnr >= SAA7164_MAX_PORTS))
 913                 BUG();
 914
 915         port = &dev->ports[portnr];
 916
 917         port->dev = dev;
 918         port->nr = portnr;
 919
 920         if ((portnr == SAA7164_PORT_TS1) || (portnr == SAA7164_PORT_TS2))
 921                 port->type = SAA7164_MPEG_DVB;
 922         else
 923         if ((portnr == SAA7164_PORT_ENC1) || (portnr == SAA7164_PORT_ENC2)) {
 924                 port->type = SAA7164_MPEG_ENCODER;
 925
 926                 /* We need a deferred interrupt handler for cmd handling */
 927                 INIT_WORK(&port->workenc, saa7164_work_enchandler);
 928         } else if ((portnr == SAA7164_PORT_VBI1) || (portnr == SAA7164_PORT_VBI2)) {
 929                 port->type = SAA7164_MPEG_VBI;
 930
 931                 /* We need a deferred interrupt handler for cmd handling */
 932                 INIT_WORK(&port->workenc, saa7164_work_vbihandler);
 933         } else
 934                 BUG();
 935
 936         /* Init all the critical resources */
 937         mutex_init(&port->dvb.lock);
 938         INIT_LIST_HEAD(&port->dmaqueue.list);
 939         mutex_init(&port->dmaqueue_lock);
 940
 941         INIT_LIST_HEAD(&port->list_buf_used.list);
 942         INIT_LIST_HEAD(&port->list_buf_free.list);
 943         init_waitqueue_head(&port->wait_read);
 944
 945
 946         saa7164_histogram_reset(&port->irq_interval, "irq intervals");
 947         saa7164_histogram_reset(&port->svc_interval, "deferred intervals");
 948         saa7164_histogram_reset(&port->irq_svc_interval,
 949                 "irq to deferred intervals");
 950         saa7164_histogram_reset(&port->read_interval,
 951                 "encoder/vbi read() intervals");
 952         saa7164_histogram_reset(&port->poll_interval,
 953                 "encoder/vbi poll() intervals");
 954
 955         return 0;
 956 }
 957
 958 static int saa7164_dev_setup(struct saa7164_dev *dev)
 959 {
 960         int i;
 961
 962         mutex_init(&dev->lock);
 963         atomic_inc(&dev->refcount);
 964         dev->nr = saa7164_devcount++;
 965
 966         snprintf(dev->name, sizeof(dev->name), "saa7164[%d]", dev->nr);
 967
 968         mutex_lock(&devlist);
 969         list_add_tail(&dev->devlist, &saa7164_devlist);
 970         mutex_unlock(&devlist);
 971
 972         /* board config */
 973         dev->board = UNSET;
 974         if (card[dev->nr] < saa7164_bcount)
 975                 dev->board = card[dev->nr];
 976
 977         for (i = 0; UNSET == dev->board  &&  i < saa7164_idcount; i++)
 978                 if (dev->pci->subsystem_vendor == saa7164_subids[i].subvendor &&
 979                         dev->pci->subsystem_device ==
 980                                 saa7164_subids[i].subdevice)
 981                                 dev->board = saa7164_subids[i].card;
 982
 983         if (UNSET == dev->board) {
 984                 dev->board = SAA7164_BOARD_UNKNOWN;
 985                 saa7164_card_list(dev);
 986         }
 987
 988         dev->pci_bus  = dev->pci->bus->number;
 989         dev->pci_slot = PCI_SLOT(dev->pci->devfn);
 990
 991         /* I2C Defaults / setup */
 992         dev->i2c_bus[0].dev = dev;
 993         dev->i2c_bus[0].nr = 0;
 994         dev->i2c_bus[1].dev = dev;
 995         dev->i2c_bus[1].nr = 1;
 996         dev->i2c_bus[2].dev = dev;
 997         dev->i2c_bus[2].nr = 2;
 998
 999         /* Transport + Encoder ports 1, 2, 3, 4 - Defaults / setup */
1000         saa7164_port_init(dev, SAA7164_PORT_TS1);
1001         saa7164_port_init(dev, SAA7164_PORT_TS2);
1002         saa7164_port_init(dev, SAA7164_PORT_ENC1);
1003         saa7164_port_init(dev, SAA7164_PORT_ENC2);
1004         saa7164_port_init(dev, SAA7164_PORT_VBI1);
1005         saa7164_port_init(dev, SAA7164_PORT_VBI2);
1006
1007         if (get_resources(dev) < 0) {
1008                 printk(KERN_ERR "CORE %s No more PCIe resources for "
1009                        "subsystem: %04x:%04x\n",
1010                        dev->name, dev->pci->subsystem_vendor,
1011                        dev->pci->subsystem_device);
1012
1013                 saa7164_devcount--;
1014                 return -ENODEV;
1015         }
1016
1017         /* PCI/e allocations */
1018         dev->lmmio = ioremap(pci_resource_start(dev->pci, 0),
1019                              pci_resource_len(dev->pci, 0));
1020
1021         dev->lmmio2 = ioremap(pci_resource_start(dev->pci, 2),
1022                              pci_resource_len(dev->pci, 2));
1023
1024         dev->bmmio = (u8 __iomem *)dev->lmmio;
1025         dev->bmmio2 = (u8 __iomem *)dev->lmmio2;
1026
1027         /* Inerrupt and ack register locations offset of bmmio */
1028         dev->int_status = 0x183000 + 0xf80;
1029         dev->int_ack = 0x183000 + 0xf90;
1030
1031         printk(KERN_INFO
1032                 "CORE %s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
1033                dev->name, dev->pci->subsystem_vendor,
1034                dev->pci->subsystem_device, saa7164_boards[dev->board].name,
1035                dev->board, card[dev->nr] == dev->board ?
1036                "insmod option" : "autodetected");
1037
1038         saa7164_pci_quirks(dev);
1039
1040         return 0;
1041 }
1042
1043 static void saa7164_dev_unregister(struct saa7164_dev *dev)
1044 {
1045         dprintk(1, "%s()\n", __func__);
1046
1047         release_mem_region(pci_resource_start(dev->pci, 0),
1048                 pci_resource_len(dev->pci, 0));
1049
1050         release_mem_region(pci_resource_start(dev->pci, 2),
1051                 pci_resource_len(dev->pci, 2));
1052
1053         if (!atomic_dec_and_test(&dev->refcount))
1054                 return;
1055
1056         iounmap(dev->lmmio);
1057         iounmap(dev->lmmio2);
1058
1059         return;
1060 }
1061
1062 #ifdef CONFIG_PROC_FS
1063 static int saa7164_proc_show(struct seq_file *m, void *v)
1064 {
1065         struct saa7164_dev *dev;
1066         struct tmComResBusInfo *b;
1067         struct list_head *list;
1068         int i, c;
1069
1070         if (saa7164_devcount == 0)
1071                 return 0;
1072
1073         list_for_each(list, &saa7164_devlist) {
1074                 dev = list_entry(list, struct saa7164_dev, devlist);
1075                 seq_printf(m, "%s = %p\n", dev->name, dev);
1076
1077                 /* Lock the bus from any other access */
1078                 b = &dev->bus;
1079                 mutex_lock(&b->lock);
1080
1081                 seq_printf(m, " .m_pdwSetWritePos = 0x%x (0x%08x)\n",
1082                         b->m_dwSetReadPos, saa7164_readl(b->m_dwSetReadPos));
1083
1084                 seq_printf(m, " .m_pdwSetReadPos  = 0x%x (0x%08x)\n",
1085                         b->m_dwSetWritePos, saa7164_readl(b->m_dwSetWritePos));
1086
1087                 seq_printf(m, " .m_pdwGetWritePos = 0x%x (0x%08x)\n",
1088                         b->m_dwGetReadPos, saa7164_readl(b->m_dwGetReadPos));
1089
1090                 seq_printf(m, " .m_pdwGetReadPos  = 0x%x (0x%08x)\n",
1091                         b->m_dwGetWritePos, saa7164_readl(b->m_dwGetWritePos));
1092                 c = 0;
1093                 seq_printf(m, "\n  Set Ring:\n");
1094                 seq_printf(m, "\n addr  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
1095                 for (i = 0; i < b->m_dwSizeSetRing; i++) {
1096                         if (c == 0)
1097                                 seq_printf(m, " %04x:", i);
1098
1099                         seq_printf(m, " %02x", *(b->m_pdwSetRing + i));
1100
1101                         if (++c == 16) {
1102                                 seq_printf(m, "\n");
1103                                 c = 0;
1104                         }
1105                 }
1106
1107                 c = 0;
1108                 seq_printf(m, "\n  Get Ring:\n");
1109                 seq_printf(m, "\n addr  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
1110                 for (i = 0; i < b->m_dwSizeGetRing; i++) {
1111                         if (c == 0)
1112                                 seq_printf(m, " %04x:", i);
1113
1114                         seq_printf(m, " %02x", *(b->m_pdwGetRing + i));
1115
1116                         if (++c == 16) {
1117                                 seq_printf(m, "\n");
1118                                 c = 0;
1119                         }
1120                 }
1121
1122                 mutex_unlock(&b->lock);
1123
1124         }
1125
1126         return 0;
1127 }
1128
1129 static int saa7164_proc_open(struct inode *inode, struct file *filp)
1130 {
1131         return single_open(filp, saa7164_proc_show, NULL);
1132 }
1133
1134 static const struct file_operations saa7164_proc_fops = {
1135         .open           = saa7164_proc_open,
1136         .read           = seq_read,
1137         .llseek         = seq_lseek,
1138         .release        = single_release,
1139 };
1140
1141 static int saa7164_proc_create(void)
1142 {
1143         struct proc_dir_entry *pe;
1144
1145         pe = proc_create("saa7164", S_IRUGO, NULL, &saa7164_proc_fops);
1146         if (!pe)
1147                 return -ENOMEM;
1148
1149         return 0;
1150 }
1151 #endif
1152
1153 static int saa7164_thread_function(void *data)
1154 {
1155         struct saa7164_dev *dev = data;
1156         struct tmFwInfoStruct fwinfo;
1157         u64 last_poll_time = 0;
1158
1159         dprintk(DBGLVL_THR, "thread started\n");
1160
1161         set_freezable();
1162
1163         while (1) {
1164                 msleep_interruptible(100);
1165                 if (kthread_should_stop())
1166                         break;
1167                 try_to_freeze();
1168
1169                 dprintk(DBGLVL_THR, "thread running\n");
1170
1171                 /* Dump the firmware debug message to console */
1172                 /* Polling this costs us 1-2% of the arm CPU */
1173                 /* convert this into a respnde to interrupt 0x7a */
1174                 saa7164_api_collect_debug(dev);
1175
1176                 /* Monitor CPU load every 1 second */
1177                 if ((last_poll_time + 1000 /* ms */) < jiffies_to_msecs(jiffies)) {
1178                         saa7164_api_get_load_info(dev, &fwinfo);
1179                         last_poll_time = jiffies_to_msecs(jiffies);
1180                 }
1181
1182         }
1183
1184         dprintk(DBGLVL_THR, "thread exiting\n");
1185         return 0;
1186 }
1187
1188 static int saa7164_initdev(struct pci_dev *pci_dev,
1189                            const struct pci_device_id *pci_id)
1190 {
1191         struct saa7164_dev *dev;
1192         int err, i;
1193         u32 version;
1194
1195         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1196         if (NULL == dev)
1197                 return -ENOMEM;
1198
1199         err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
1200         if (err < 0) {
1201                 dev_err(&pci_dev->dev, "v4l2_device_register failed\n");
1202                 goto fail_free;
1203         }
1204
1205         /* pci init */
1206         dev->pci = pci_dev;
1207         if (pci_enable_device(pci_dev)) {
1208                 err = -EIO;
1209                 goto fail_free;
1210         }
1211
1212         if (saa7164_dev_setup(dev) < 0) {
1213                 err = -EINVAL;
1214                 goto fail_free;
1215         }
1216
1217         /* print pci info */
1218         dev->pci_rev = pci_dev->revision;
1219         pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
1220         printk(KERN_INFO "%s/0: found at %s, rev: %d, irq: %d, "
1221                "latency: %d, mmio: 0x%llx\n", dev->name,
1222                pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
1223                dev->pci_lat,
1224                 (unsigned long long)pci_resource_start(pci_dev, 0));
1225
1226         pci_set_master(pci_dev);
1227         /* TODO */
1228         if (!pci_dma_supported(pci_dev, 0xffffffff)) {
1229                 printk("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
1230                 err = -EIO;
1231                 goto fail_irq;
1232         }
1233
1234         err = request_irq(pci_dev->irq, saa7164_irq,
1235                 IRQF_SHARED, dev->name, dev);
1236         if (err < 0) {
1237                 printk(KERN_ERR "%s: can't get IRQ %d\n", dev->name,
1238                         pci_dev->irq);
1239                 err = -EIO;
1240                 goto fail_irq;
1241         }
1242
1243         pci_set_drvdata(pci_dev, dev);
1244
1245         /* Init the internal command list */
1246         for (i = 0; i < SAA_CMD_MAX_MSG_UNITS; i++) {
1247                 dev->cmds[i].seqno = i;
1248                 dev->cmds[i].inuse = 0;
1249                 mutex_init(&dev->cmds[i].lock);
1250                 init_waitqueue_head(&dev->cmds[i].wait);
1251         }
1252
1253         /* We need a deferred interrupt handler for cmd handling */
1254         INIT_WORK(&dev->workcmd, saa7164_work_cmdhandler);
1255
1256         /* Only load the firmware if we know the board */
1257         if (dev->board != SAA7164_BOARD_UNKNOWN) {
1258
1259                 err = saa7164_downloadfirmware(dev);
1260                 if (err < 0) {
1261                         printk(KERN_ERR
1262                                 "Failed to boot firmware, no features "
1263                                 "registered\n");
1264                         goto fail_fw;
1265                 }
1266
1267                 saa7164_get_descriptors(dev);
1268                 saa7164_dumpregs(dev, 0);
1269                 saa7164_getcurrentfirmwareversion(dev);
1270                 saa7164_getfirmwarestatus(dev);
1271                 err = saa7164_bus_setup(dev);
1272                 if (err < 0)
1273                         printk(KERN_ERR
1274                                 "Failed to setup the bus, will continue\n");
1275                 saa7164_bus_dump(dev);
1276
1277                 /* Ping the running firmware via the command bus and get the
1278                  * firmware version, this checks the bus is running OK.
1279                  */
1280                 version = 0;
1281                 if (saa7164_api_get_fw_version(dev, &version) == SAA_OK)
1282                         dprintk(1, "Bus is operating correctly using "
1283                                 "version %d.%d.%d.%d (0x%x)\n",
1284                                 (version & 0x0000fc00) >> 10,
1285                                 (version & 0x000003e0) >> 5,
1286                                 (version & 0x0000001f),
1287                                 (version & 0xffff0000) >> 16,
1288                                 version);
1289                 else
1290                         printk(KERN_ERR
1291                                 "Failed to communicate with the firmware\n");
1292
1293                 /* Bring up the I2C buses */
1294                 saa7164_i2c_register(&dev->i2c_bus[0]);
1295                 saa7164_i2c_register(&dev->i2c_bus[1]);
1296                 saa7164_i2c_register(&dev->i2c_bus[2]);
1297                 saa7164_gpio_setup(dev);
1298                 saa7164_card_setup(dev);
1299
1300                 /* Parse the dynamic device configuration, find various
1301                  * media endpoints (MPEG, WMV, PS, TS) and cache their
1302                  * configuration details into the driver, so we can
1303                  * reference them later during simething_register() func,
1304                  * interrupt handlers, deferred work handlers etc.
1305                  */
1306                 saa7164_api_enum_subdevs(dev);
1307
1308                 /* Begin to create the video sub-systems and register funcs */
1309                 if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB) {
1310                         if (saa7164_dvb_register(&dev->ports[SAA7164_PORT_TS1]) < 0) {
1311                                 printk(KERN_ERR "%s() Failed to register "
1312                                         "dvb adapters on porta\n",
1313                                         __func__);
1314                         }
1315                 }
1316
1317                 if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB) {
1318                         if (saa7164_dvb_register(&dev->ports[SAA7164_PORT_TS2]) < 0) {
1319                                 printk(KERN_ERR"%s() Failed to register "
1320                                         "dvb adapters on portb\n",
1321                                         __func__);
1322                         }
1323                 }
1324
1325                 if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER) {
1326                         if (saa7164_encoder_register(&dev->ports[SAA7164_PORT_ENC1]) < 0) {
1327                                 printk(KERN_ERR"%s() Failed to register "
1328                                         "mpeg encoder\n", __func__);
1329                         }
1330                 }
1331
1332                 if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER) {
1333                         if (saa7164_encoder_register(&dev->ports[SAA7164_PORT_ENC2]) < 0) {
1334                                 printk(KERN_ERR"%s() Failed to register "
1335                                         "mpeg encoder\n", __func__);
1336                         }
1337                 }
1338
1339                 if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI) {
1340                         if (saa7164_vbi_register(&dev->ports[SAA7164_PORT_VBI1]) < 0) {
1341                                 printk(KERN_ERR"%s() Failed to register "
1342                                         "vbi device\n", __func__);
1343                         }
1344                 }
1345
1346                 if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI) {
1347                         if (saa7164_vbi_register(&dev->ports[SAA7164_PORT_VBI2]) < 0) {
1348                                 printk(KERN_ERR"%s() Failed to register "
1349                                         "vbi device\n", __func__);
1350                         }
1351                 }
1352                 saa7164_api_set_debug(dev, fw_debug);
1353
1354                 if (fw_debug) {
1355                         dev->kthread = kthread_run(saa7164_thread_function, dev,
1356                                 "saa7164 debug");
1357                         if (IS_ERR(dev->kthread)) {
1358                                 dev->kthread = NULL;
1359                                 printk(KERN_ERR "%s() Failed to create "
1360                                         "debug kernel thread\n", __func__);
1361                         }
1362                 }
1363
1364         } /* != BOARD_UNKNOWN */
1365         else
1366                 printk(KERN_ERR "%s() Unsupported board detected, "
1367                         "registering without firmware\n", __func__);
1368
1369         dprintk(1, "%s() parameter debug = %d\n", __func__, saa_debug);
1370         dprintk(1, "%s() parameter waitsecs = %d\n", __func__, waitsecs);
1371
1372 fail_fw:
1373         return 0;
1374
1375 fail_irq:
1376         saa7164_dev_unregister(dev);
1377 fail_free:
1378         v4l2_device_unregister(&dev->v4l2_dev);
1379         kfree(dev);
1380         return err;
1381 }
1382
1383 static void saa7164_shutdown(struct saa7164_dev *dev)
1384 {
1385         dprintk(1, "%s()\n", __func__);
1386 }
1387
1388 static void saa7164_finidev(struct pci_dev *pci_dev)
1389 {
1390         struct saa7164_dev *dev = pci_get_drvdata(pci_dev);
1391
1392         if (dev->board != SAA7164_BOARD_UNKNOWN) {
1393                 if (fw_debug && dev->kthread) {
1394                         kthread_stop(dev->kthread);
1395                         dev->kthread = NULL;
1396                 }
1397                 if (dev->firmwareloaded)
1398                         saa7164_api_set_debug(dev, 0x00);
1399         }
1400
1401         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1402                 &dev->ports[SAA7164_PORT_ENC1].irq_interval);
1403         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1404                 &dev->ports[SAA7164_PORT_ENC1].svc_interval);
1405         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1406                 &dev->ports[SAA7164_PORT_ENC1].irq_svc_interval);
1407         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1408                 &dev->ports[SAA7164_PORT_ENC1].read_interval);
1409         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1410                 &dev->ports[SAA7164_PORT_ENC1].poll_interval);
1411         saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI1],
1412                 &dev->ports[SAA7164_PORT_VBI1].read_interval);
1413         saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI2],
1414                 &dev->ports[SAA7164_PORT_VBI2].poll_interval);
1415
1416         saa7164_shutdown(dev);
1417
1418         if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB)
1419                 saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS1]);
1420
1421         if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB)
1422                 saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS2]);
1423
1424         if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER)
1425                 saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC1]);
1426
1427         if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER)
1428                 saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC2]);
1429
1430         if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI)
1431                 saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI1]);
1432
1433         if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI)
1434                 saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI2]);
1435
1436         saa7164_i2c_unregister(&dev->i2c_bus[0]);
1437         saa7164_i2c_unregister(&dev->i2c_bus[1]);
1438         saa7164_i2c_unregister(&dev->i2c_bus[2]);
1439
1440         pci_disable_device(pci_dev);
1441
1442         /* unregister stuff */
1443         free_irq(pci_dev->irq, dev);
1444
1445         mutex_lock(&devlist);
1446         list_del(&dev->devlist);
1447         mutex_unlock(&devlist);
1448
1449         saa7164_dev_unregister(dev);
1450         v4l2_device_unregister(&dev->v4l2_dev);
1451         kfree(dev);
1452 }
1453
1454 static struct pci_device_id saa7164_pci_tbl[] = {
1455         {
1456                 /* SAA7164 */
1457                 .vendor       = 0x1131,
1458                 .device       = 0x7164,
1459                 .subvendor    = PCI_ANY_ID,
1460                 .subdevice    = PCI_ANY_ID,
1461         }, {
1462                 /* --- end of list --- */
1463         }
1464 };
1465 MODULE_DEVICE_TABLE(pci, saa7164_pci_tbl);
1466
1467 static struct pci_driver saa7164_pci_driver = {
1468         .name     = "saa7164",
1469         .id_table = saa7164_pci_tbl,
1470         .probe    = saa7164_initdev,
1471         .remove   = saa7164_finidev,
1472         /* TODO */
1473         .suspend  = NULL,
1474         .resume   = NULL,
1475 };
1476
1477 static int __init saa7164_init(void)
1478 {
1479         printk(KERN_INFO "saa7164 driver loaded\n");
1480
1481 #ifdef CONFIG_PROC_FS
1482         saa7164_proc_create();
1483 #endif
1484         return pci_register_driver(&saa7164_pci_driver);
1485 }
1486
1487 static void __exit saa7164_fini(void)
1488 {
1489 #ifdef CONFIG_PROC_FS
1490         remove_proc_entry("saa7164", NULL);
1491 #endif
1492         pci_unregister_driver(&saa7164_pci_driver);
1493 }
1494
1495 module_init(saa7164_init);
1496 module_exit(saa7164_fini);
1497