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

   1 /*
   2  *  Driver for the NXP SAA7164 PCIe bridge
   3  *
   4  *  Copyright (c) 2010-2015 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
  18 #include <linux/init.h>
  19 #include <linux/list.h>
  20 #include <linux/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/kmod.h>
  23 #include <linux/kernel.h>
  24 #include <linux/slab.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/delay.h>
  27 #include <asm/div64.h>
  28
  29 #ifdef CONFIG_PROC_FS
  30 #include <linux/proc_fs.h>
  31 #endif
  32 #include "saa7164.h"
  33
  34 MODULE_DESCRIPTION("Driver for NXP SAA7164 based TV cards");
  35 MODULE_AUTHOR("Steven Toth <stoth@kernellabs.com>");
  36 MODULE_LICENSE("GPL");
  37
  38 /*
  39  *  1 Basic
  40  *  2
  41  *  4 i2c
  42  *  8 api
  43  * 16 cmd
  44  * 32 bus
  45  */
  46
  47 unsigned int saa_debug;
  48 module_param_named(debug, saa_debug, int, 0644);
  49 MODULE_PARM_DESC(debug, "enable debug messages");
  50
  51 static unsigned int fw_debug;
  52 module_param(fw_debug, int, 0644);
  53 MODULE_PARM_DESC(fw_debug, "Firmware debug level def:2");
  54
  55 unsigned int encoder_buffers = SAA7164_MAX_ENCODER_BUFFERS;
  56 module_param(encoder_buffers, int, 0644);
  57 MODULE_PARM_DESC(encoder_buffers, "Total buffers in read queue 16-512 def:64");
  58
  59 unsigned int vbi_buffers = SAA7164_MAX_VBI_BUFFERS;
  60 module_param(vbi_buffers, int, 0644);
  61 MODULE_PARM_DESC(vbi_buffers, "Total buffers in read queue 16-512 def:64");
  62
  63 unsigned int waitsecs = 10;
  64 module_param(waitsecs, int, 0644);
  65 MODULE_PARM_DESC(waitsecs, "timeout on firmware messages");
  66
  67 static unsigned int card[]  = {[0 ... (SAA7164_MAXBOARDS - 1)] = UNSET };
  68 module_param_array(card,  int, NULL, 0444);
  69 MODULE_PARM_DESC(card, "card type");
  70
  71 static unsigned int print_histogram = 64;
  72 module_param(print_histogram, int, 0644);
  73 MODULE_PARM_DESC(print_histogram, "print histogram values once");
  74
  75 unsigned int crc_checking = 1;
  76 module_param(crc_checking, int, 0644);
  77 MODULE_PARM_DESC(crc_checking, "enable crc sanity checking on buffers");
  78
  79 static unsigned int guard_checking = 1;
  80 module_param(guard_checking, int, 0644);
  81 MODULE_PARM_DESC(guard_checking,
  82         "enable dma sanity checking for buffer overruns");
  83
  84 static bool enable_msi = true;
  85 module_param(enable_msi, bool, 0444);
  86 MODULE_PARM_DESC(enable_msi,
  87                 "enable the use of an msi interrupt if available");
  88
  89 static unsigned int saa7164_devcount;
  90
  91 static DEFINE_MUTEX(devlist);
  92 LIST_HEAD(saa7164_devlist);
  93
  94 #define INT_SIZE 16
  95
  96 static void saa7164_pack_verifier(struct saa7164_buffer *buf)
  97 {
  98         u8 *p = (u8 *)buf->cpu;
  99         int i;
 100
 101         for (i = 0; i < buf->actual_size; i += 2048) {
 102
 103                 if ((*(p + i + 0) != 0x00) || (*(p + i + 1) != 0x00) ||
 104                         (*(p + i + 2) != 0x01) || (*(p + i + 3) != 0xBA)) {
 105                         printk(KERN_ERR "No pack at 0x%x\n", i);
 106 #if 0
 107                         print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
 108                                        p + 1, 32, false);
 109 #endif
 110                 }
 111         }
 112 }
 113
 114 #define FIXED_VIDEO_PID 0xf1
 115 #define FIXED_AUDIO_PID 0xf2
 116
 117 static void saa7164_ts_verifier(struct saa7164_buffer *buf)
 118 {
 119         struct saa7164_port *port = buf->port;
 120         u32 i;
 121         u8 cc, a;
 122         u16 pid;
 123         u8 *bufcpu = (u8 *)buf->cpu;
 124
 125         port->sync_errors = 0;
 126         port->v_cc_errors = 0;
 127         port->a_cc_errors = 0;
 128
 129         for (i = 0; i < buf->actual_size; i += 188) {
 130                 if (*(bufcpu + i) != 0x47)
 131                         port->sync_errors++;
 132
 133                 /* TODO: Query pid lower 8 bits, ignoring upper bits intensionally */
 134                 pid = ((*(bufcpu + i + 1) & 0x1f) << 8) | *(bufcpu + i + 2);
 135                 cc = *(bufcpu + i + 3) & 0x0f;
 136
 137                 if (pid == FIXED_VIDEO_PID) {
 138                         a = ((port->last_v_cc + 1) & 0x0f);
 139                         if (a != cc) {
 140                                 printk(KERN_ERR "video cc last = %x current = %x i = %d\n",
 141                                         port->last_v_cc, cc, i);
 142                                 port->v_cc_errors++;
 143                         }
 144
 145                         port->last_v_cc = cc;
 146                 } else
 147                 if (pid == FIXED_AUDIO_PID) {
 148                         a = ((port->last_a_cc + 1) & 0x0f);
 149                         if (a != cc) {
 150                                 printk(KERN_ERR "audio cc last = %x current = %x i = %d\n",
 151                                         port->last_a_cc, cc, i);
 152                                 port->a_cc_errors++;
 153                         }
 154
 155                         port->last_a_cc = cc;
 156                 }
 157
 158         }
 159
 160         /* Only report errors if we've been through this function at least
 161          * once already and the cached cc values are primed. First time through
 162          * always generates errors.
 163          */
 164         if (port->v_cc_errors && (port->done_first_interrupt > 1))
 165                 printk(KERN_ERR "video pid cc, %d errors\n", port->v_cc_errors);
 166
 167         if (port->a_cc_errors && (port->done_first_interrupt > 1))
 168                 printk(KERN_ERR "audio pid cc, %d errors\n", port->a_cc_errors);
 169
 170         if (port->sync_errors && (port->done_first_interrupt > 1))
 171                 printk(KERN_ERR "sync_errors = %d\n", port->sync_errors);
 172
 173         if (port->done_first_interrupt == 1)
 174                 port->done_first_interrupt++;
 175 }
 176
 177 static void saa7164_histogram_reset(struct saa7164_histogram *hg, char *name)
 178 {
 179         int i;
 180
 181         memset(hg, 0, sizeof(struct saa7164_histogram));
 182         strscpy(hg->name, name, sizeof(hg->name));
 183
 184         /* First 30ms x 1ms */
 185         for (i = 0; i < 30; i++)
 186                 hg->counter1[0 + i].val = i;
 187
 188         /* 30 - 200ms x 10ms  */
 189         for (i = 0; i < 18; i++)
 190                 hg->counter1[30 + i].val = 30 + (i * 10);
 191
 192         /* 200 - 2000ms x 100ms  */
 193         for (i = 0; i < 15; i++)
 194                 hg->counter1[48 + i].val = 200 + (i * 200);
 195
 196         /* Catch all massive value (2secs) */
 197         hg->counter1[55].val = 2000;
 198
 199         /* Catch all massive value (4secs) */
 200         hg->counter1[56].val = 4000;
 201
 202         /* Catch all massive value (8secs) */
 203         hg->counter1[57].val = 8000;
 204
 205         /* Catch all massive value (15secs) */
 206         hg->counter1[58].val = 15000;
 207
 208         /* Catch all massive value (30secs) */
 209         hg->counter1[59].val = 30000;
 210
 211         /* Catch all massive value (60secs) */
 212         hg->counter1[60].val = 60000;
 213
 214         /* Catch all massive value (5mins) */
 215         hg->counter1[61].val = 300000;
 216
 217         /* Catch all massive value (15mins) */
 218         hg->counter1[62].val = 900000;
 219
 220         /* Catch all massive values (1hr) */
 221         hg->counter1[63].val = 3600000;
 222 }
 223
 224 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val)
 225 {
 226         int i;
 227         for (i = 0; i < 64; i++) {
 228                 if (val <= hg->counter1[i].val) {
 229                         hg->counter1[i].count++;
 230                         hg->counter1[i].update_time = jiffies;
 231                         break;
 232                 }
 233         }
 234 }
 235
 236 static void saa7164_histogram_print(struct saa7164_port *port,
 237         struct saa7164_histogram *hg)
 238 {
 239         u32 entries = 0;
 240         int i;
 241
 242         printk(KERN_ERR "Histogram named %s (ms, count, last_update_jiffy)\n", hg->name);
 243         for (i = 0; i < 64; i++) {
 244                 if (hg->counter1[i].count == 0)
 245                         continue;
 246
 247                 printk(KERN_ERR " %4d %12d %Ld\n",
 248                         hg->counter1[i].val,
 249                         hg->counter1[i].count,
 250                         hg->counter1[i].update_time);
 251
 252                 entries++;
 253         }
 254         printk(KERN_ERR "Total: %d\n", entries);
 255 }
 256
 257 static void saa7164_work_enchandler_helper(struct saa7164_port *port, int bufnr)
 258 {
 259         struct saa7164_dev *dev = port->dev;
 260         struct saa7164_buffer *buf = NULL;
 261         struct saa7164_user_buffer *ubuf = NULL;
 262         struct list_head *c, *n;
 263         int i = 0;
 264         u8 *p;
 265
 266         mutex_lock(&port->dmaqueue_lock);
 267         list_for_each_safe(c, n, &port->dmaqueue.list) {
 268
 269                 buf = list_entry(c, struct saa7164_buffer, list);
 270                 if (i++ > port->hwcfg.buffercount) {
 271                         printk(KERN_ERR "%s() illegal i count %d\n",
 272                                 __func__, i);
 273                         break;
 274                 }
 275
 276                 if (buf->idx == bufnr) {
 277
 278                         /* Found the buffer, deal with it */
 279                         dprintk(DBGLVL_IRQ, "%s() bufnr: %d\n", __func__, bufnr);
 280
 281                         if (crc_checking) {
 282                                 /* Throw a new checksum on the dma buffer */
 283                                 buf->crc = crc32(0, buf->cpu, buf->actual_size);
 284                         }
 285
 286                         if (guard_checking) {
 287                                 p = (u8 *)buf->cpu;
 288                                 if ((*(p + buf->actual_size + 0) != 0xff) ||
 289                                         (*(p + buf->actual_size + 1) != 0xff) ||
 290                                         (*(p + buf->actual_size + 2) != 0xff) ||
 291                                         (*(p + buf->actual_size + 3) != 0xff) ||
 292                                         (*(p + buf->actual_size + 0x10) != 0xff) ||
 293                                         (*(p + buf->actual_size + 0x11) != 0xff) ||
 294                                         (*(p + buf->actual_size + 0x12) != 0xff) ||
 295                                         (*(p + buf->actual_size + 0x13) != 0xff)) {
 296                                                 printk(KERN_ERR "%s() buf %p guard buffer breach\n",
 297                                                         __func__, buf);
 298 #if 0
 299                         print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1,
 300                                        p + buf->actual_size - 32, 64, false);
 301 #endif
 302                                 }
 303                         }
 304
 305                         if ((port->nr != SAA7164_PORT_VBI1) && (port->nr != SAA7164_PORT_VBI2)) {
 306                                 /* Validate the incoming buffer content */
 307                                 if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
 308                                         saa7164_ts_verifier(buf);
 309                                 else if (port->encoder_params.stream_type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS)
 310                                         saa7164_pack_verifier(buf);
 311                         }
 312
 313                         /* find a free user buffer and clone to it */
 314                         if (!list_empty(&port->list_buf_free.list)) {
 315
 316                                 /* Pull the first buffer from the used list */
 317                                 ubuf = list_first_entry(&port->list_buf_free.list,
 318                                         struct saa7164_user_buffer, list);
 319
 320                                 if (buf->actual_size <= ubuf->actual_size) {
 321
 322                                         memcpy(ubuf->data, buf->cpu, 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(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, *portb, *portc, *portd, *porte, *portf;
 623
 624         u32 intid, intstat[INT_SIZE/4];
 625         int i, handled = 0, bit;
 626
 627         if (dev == NULL) {
 628                 printk(KERN_ERR "%s() No device specified\n", __func__);
 629                 handled = 0;
 630                 goto out;
 631         }
 632
 633         porta = &dev->ports[SAA7164_PORT_TS1];
 634         portb = &dev->ports[SAA7164_PORT_TS2];
 635         portc = &dev->ports[SAA7164_PORT_ENC1];
 636         portd = &dev->ports[SAA7164_PORT_ENC2];
 637         porte = &dev->ports[SAA7164_PORT_VBI1];
 638         portf = &dev->ports[SAA7164_PORT_VBI2];
 639
 640         /* Check that the hardware is accessible. If the status bytes are
 641          * 0xFF then the device is not accessible, the the IRQ belongs
 642          * to another driver.
 643          * 4 x u32 interrupt registers.
 644          */
 645         for (i = 0; i < INT_SIZE/4; i++) {
 646
 647                 /* TODO: Convert into saa7164_readl() */
 648                 /* Read the 4 hardware interrupt registers */
 649                 intstat[i] = saa7164_readl(dev->int_status + (i * 4));
 650
 651                 if (intstat[i])
 652                         handled = 1;
 653         }
 654         if (handled == 0)
 655                 goto out;
 656
 657         /* For each of the HW interrupt registers */
 658         for (i = 0; i < INT_SIZE/4; i++) {
 659
 660                 if (intstat[i]) {
 661                         /* Each function of the board has it's own interruptid.
 662                          * Find the function that triggered then call
 663                          * it's handler.
 664                          */
 665                         for (bit = 0; bit < 32; bit++) {
 666
 667                                 if (((intstat[i] >> bit) & 0x00000001) == 0)
 668                                         continue;
 669
 670                                 /* Calculate the interrupt id (0x00 to 0x7f) */
 671
 672                                 intid = (i * 32) + bit;
 673                                 if (intid == dev->intfdesc.bInterruptId) {
 674                                         /* A response to an cmd/api call */
 675                                         schedule_work(&dev->workcmd);
 676                                 } else if (intid == porta->hwcfg.interruptid) {
 677
 678                                         /* Transport path 1 */
 679                                         saa7164_irq_ts(porta);
 680
 681                                 } else if (intid == portb->hwcfg.interruptid) {
 682
 683                                         /* Transport path 2 */
 684                                         saa7164_irq_ts(portb);
 685
 686                                 } else if (intid == portc->hwcfg.interruptid) {
 687
 688                                         /* Encoder path 1 */
 689                                         saa7164_irq_encoder(portc);
 690
 691                                 } else if (intid == portd->hwcfg.interruptid) {
 692
 693                                         /* Encoder path 2 */
 694                                         saa7164_irq_encoder(portd);
 695
 696                                 } else if (intid == porte->hwcfg.interruptid) {
 697
 698                                         /* VBI path 1 */
 699                                         saa7164_irq_vbi(porte);
 700
 701                                 } else if (intid == portf->hwcfg.interruptid) {
 702
 703                                         /* VBI path 2 */
 704                                         saa7164_irq_vbi(portf);
 705
 706                                 } else {
 707                                         /* Find the function */
 708                                         dprintk(DBGLVL_IRQ,
 709                                                 "%s() unhandled interrupt reg 0x%x bit 0x%x 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, "--------------------> 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
 765
 766         for (i = 0; i < 0x100; i += 16)
 767                 dprintk(1, "region0[0x%08x] = %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
 768                         i,
 769                         (u8)saa7164_readb(addr + i + 0),
 770                         (u8)saa7164_readb(addr + i + 1),
 771                         (u8)saa7164_readb(addr + i + 2),
 772                         (u8)saa7164_readb(addr + i + 3),
 773                         (u8)saa7164_readb(addr + i + 4),
 774                         (u8)saa7164_readb(addr + i + 5),
 775                         (u8)saa7164_readb(addr + i + 6),
 776                         (u8)saa7164_readb(addr + i + 7),
 777                         (u8)saa7164_readb(addr + i + 8),
 778                         (u8)saa7164_readb(addr + i + 9),
 779                         (u8)saa7164_readb(addr + i + 10),
 780                         (u8)saa7164_readb(addr + i + 11),
 781                         (u8)saa7164_readb(addr + i + 12),
 782                         (u8)saa7164_readb(addr + i + 13),
 783                         (u8)saa7164_readb(addr + i + 14),
 784                         (u8)saa7164_readb(addr + i + 15)
 785                         );
 786 }
 787
 788 static void saa7164_dump_hwdesc(struct saa7164_dev *dev)
 789 {
 790         dprintk(1, "@0x%p hwdesc sizeof(struct tmComResHWDescr) = %d bytes\n",
 791                 &dev->hwdesc, (u32)sizeof(struct tmComResHWDescr));
 792
 793         dprintk(1, " .bLength = 0x%x\n", dev->hwdesc.bLength);
 794         dprintk(1, " .bDescriptorType = 0x%x\n", dev->hwdesc.bDescriptorType);
 795         dprintk(1, " .bDescriptorSubtype = 0x%x\n",
 796                 dev->hwdesc.bDescriptorSubtype);
 797
 798         dprintk(1, " .bcdSpecVersion = 0x%x\n", dev->hwdesc.bcdSpecVersion);
 799         dprintk(1, " .dwClockFrequency = 0x%x\n", dev->hwdesc.dwClockFrequency);
 800         dprintk(1, " .dwClockUpdateRes = 0x%x\n", dev->hwdesc.dwClockUpdateRes);
 801         dprintk(1, " .bCapabilities = 0x%x\n", dev->hwdesc.bCapabilities);
 802         dprintk(1, " .dwDeviceRegistersLocation = 0x%x\n",
 803                 dev->hwdesc.dwDeviceRegistersLocation);
 804
 805         dprintk(1, " .dwHostMemoryRegion = 0x%x\n",
 806                 dev->hwdesc.dwHostMemoryRegion);
 807
 808         dprintk(1, " .dwHostMemoryRegionSize = 0x%x\n",
 809                 dev->hwdesc.dwHostMemoryRegionSize);
 810
 811         dprintk(1, " .dwHostHibernatMemRegion = 0x%x\n",
 812                 dev->hwdesc.dwHostHibernatMemRegion);
 813
 814         dprintk(1, " .dwHostHibernatMemRegionSize = 0x%x\n",
 815                 dev->hwdesc.dwHostHibernatMemRegionSize);
 816 }
 817
 818 static void saa7164_dump_intfdesc(struct saa7164_dev *dev)
 819 {
 820         dprintk(1, "@0x%p intfdesc sizeof(struct tmComResInterfaceDescr) = %d bytes\n",
 821                 &dev->intfdesc, (u32)sizeof(struct tmComResInterfaceDescr));
 822
 823         dprintk(1, " .bLength = 0x%x\n", dev->intfdesc.bLength);
 824         dprintk(1, " .bDescriptorType = 0x%x\n", dev->intfdesc.bDescriptorType);
 825         dprintk(1, " .bDescriptorSubtype = 0x%x\n",
 826                 dev->intfdesc.bDescriptorSubtype);
 827
 828         dprintk(1, " .bFlags = 0x%x\n", dev->intfdesc.bFlags);
 829         dprintk(1, " .bInterfaceType = 0x%x\n", dev->intfdesc.bInterfaceType);
 830         dprintk(1, " .bInterfaceId = 0x%x\n", dev->intfdesc.bInterfaceId);
 831         dprintk(1, " .bBaseInterface = 0x%x\n", dev->intfdesc.bBaseInterface);
 832         dprintk(1, " .bInterruptId = 0x%x\n", dev->intfdesc.bInterruptId);
 833         dprintk(1, " .bDebugInterruptId = 0x%x\n",
 834                 dev->intfdesc.bDebugInterruptId);
 835
 836         dprintk(1, " .BARLocation = 0x%x\n", dev->intfdesc.BARLocation);
 837 }
 838
 839 static void saa7164_dump_busdesc(struct saa7164_dev *dev)
 840 {
 841         dprintk(1, "@0x%p busdesc sizeof(struct tmComResBusDescr) = %d bytes\n",
 842                 &dev->busdesc, (u32)sizeof(struct tmComResBusDescr));
 843
 844         dprintk(1, " .CommandRing   = 0x%016Lx\n", dev->busdesc.CommandRing);
 845         dprintk(1, " .ResponseRing  = 0x%016Lx\n", dev->busdesc.ResponseRing);
 846         dprintk(1, " .CommandWrite  = 0x%x\n", dev->busdesc.CommandWrite);
 847         dprintk(1, " .CommandRead   = 0x%x\n", dev->busdesc.CommandRead);
 848         dprintk(1, " .ResponseWrite = 0x%x\n", dev->busdesc.ResponseWrite);
 849         dprintk(1, " .ResponseRead  = 0x%x\n", dev->busdesc.ResponseRead);
 850 }
 851
 852 /* Much of the hardware configuration and PCI registers are configured
 853  * dynamically depending on firmware. We have to cache some initial
 854  * structures then use these to locate other important structures
 855  * from PCI space.
 856  */
 857 static void saa7164_get_descriptors(struct saa7164_dev *dev)
 858 {
 859         memcpy_fromio(&dev->hwdesc, dev->bmmio, sizeof(struct tmComResHWDescr));
 860         memcpy_fromio(&dev->intfdesc, dev->bmmio + sizeof(struct tmComResHWDescr),
 861                 sizeof(struct tmComResInterfaceDescr));
 862         memcpy_fromio(&dev->busdesc, dev->bmmio + dev->intfdesc.BARLocation,
 863                 sizeof(struct tmComResBusDescr));
 864
 865         if (dev->hwdesc.bLength != sizeof(struct tmComResHWDescr)) {
 866                 printk(KERN_ERR "Structure struct tmComResHWDescr is mangled\n");
 867                 printk(KERN_ERR "Need %x got %d\n", dev->hwdesc.bLength,
 868                         (u32)sizeof(struct tmComResHWDescr));
 869         } else
 870                 saa7164_dump_hwdesc(dev);
 871
 872         if (dev->intfdesc.bLength != sizeof(struct tmComResInterfaceDescr)) {
 873                 printk(KERN_ERR "struct struct tmComResInterfaceDescr is mangled\n");
 874                 printk(KERN_ERR "Need %x got %d\n", dev->intfdesc.bLength,
 875                         (u32)sizeof(struct tmComResInterfaceDescr));
 876         } else
 877                 saa7164_dump_intfdesc(dev);
 878
 879         saa7164_dump_busdesc(dev);
 880 }
 881
 882 static int saa7164_pci_quirks(struct saa7164_dev *dev)
 883 {
 884         return 0;
 885 }
 886
 887 static int get_resources(struct saa7164_dev *dev)
 888 {
 889         if (request_mem_region(pci_resource_start(dev->pci, 0),
 890                 pci_resource_len(dev->pci, 0), dev->name)) {
 891
 892                 if (request_mem_region(pci_resource_start(dev->pci, 2),
 893                         pci_resource_len(dev->pci, 2), dev->name))
 894                         return 0;
 895         }
 896
 897         printk(KERN_ERR "%s: can't get MMIO memory @ 0x%llx or 0x%llx\n",
 898                 dev->name,
 899                 (u64)pci_resource_start(dev->pci, 0),
 900                 (u64)pci_resource_start(dev->pci, 2));
 901
 902         return -EBUSY;
 903 }
 904
 905 static int saa7164_port_init(struct saa7164_dev *dev, int portnr)
 906 {
 907         struct saa7164_port *port = NULL;
 908
 909         if ((portnr < 0) || (portnr >= SAA7164_MAX_PORTS))
 910                 BUG();
 911
 912         port = &dev->ports[portnr];
 913
 914         port->dev = dev;
 915         port->nr = portnr;
 916
 917         if ((portnr == SAA7164_PORT_TS1) || (portnr == SAA7164_PORT_TS2))
 918                 port->type = SAA7164_MPEG_DVB;
 919         else
 920         if ((portnr == SAA7164_PORT_ENC1) || (portnr == SAA7164_PORT_ENC2)) {
 921                 port->type = SAA7164_MPEG_ENCODER;
 922
 923                 /* We need a deferred interrupt handler for cmd handling */
 924                 INIT_WORK(&port->workenc, saa7164_work_enchandler);
 925         } else if ((portnr == SAA7164_PORT_VBI1) || (portnr == SAA7164_PORT_VBI2)) {
 926                 port->type = SAA7164_MPEG_VBI;
 927
 928                 /* We need a deferred interrupt handler for cmd handling */
 929                 INIT_WORK(&port->workenc, saa7164_work_vbihandler);
 930         } else
 931                 BUG();
 932
 933         /* Init all the critical resources */
 934         mutex_init(&port->dvb.lock);
 935         INIT_LIST_HEAD(&port->dmaqueue.list);
 936         mutex_init(&port->dmaqueue_lock);
 937
 938         INIT_LIST_HEAD(&port->list_buf_used.list);
 939         INIT_LIST_HEAD(&port->list_buf_free.list);
 940         init_waitqueue_head(&port->wait_read);
 941
 942
 943         saa7164_histogram_reset(&port->irq_interval, "irq intervals");
 944         saa7164_histogram_reset(&port->svc_interval, "deferred intervals");
 945         saa7164_histogram_reset(&port->irq_svc_interval,
 946                 "irq to deferred intervals");
 947         saa7164_histogram_reset(&port->read_interval,
 948                 "encoder/vbi read() intervals");
 949         saa7164_histogram_reset(&port->poll_interval,
 950                 "encoder/vbi poll() intervals");
 951
 952         return 0;
 953 }
 954
 955 static int saa7164_dev_setup(struct saa7164_dev *dev)
 956 {
 957         int i;
 958
 959         mutex_init(&dev->lock);
 960         atomic_inc(&dev->refcount);
 961         dev->nr = saa7164_devcount++;
 962
 963         snprintf(dev->name, sizeof(dev->name), "saa7164[%d]", dev->nr);
 964
 965         mutex_lock(&devlist);
 966         list_add_tail(&dev->devlist, &saa7164_devlist);
 967         mutex_unlock(&devlist);
 968
 969         /* board config */
 970         dev->board = UNSET;
 971         if (card[dev->nr] < saa7164_bcount)
 972                 dev->board = card[dev->nr];
 973
 974         for (i = 0; UNSET == dev->board  &&  i < saa7164_idcount; i++)
 975                 if (dev->pci->subsystem_vendor == saa7164_subids[i].subvendor &&
 976                         dev->pci->subsystem_device ==
 977                                 saa7164_subids[i].subdevice)
 978                                 dev->board = saa7164_subids[i].card;
 979
 980         if (UNSET == dev->board) {
 981                 dev->board = SAA7164_BOARD_UNKNOWN;
 982                 saa7164_card_list(dev);
 983         }
 984
 985         dev->pci_bus  = dev->pci->bus->number;
 986         dev->pci_slot = PCI_SLOT(dev->pci->devfn);
 987
 988         /* I2C Defaults / setup */
 989         dev->i2c_bus[0].dev = dev;
 990         dev->i2c_bus[0].nr = 0;
 991         dev->i2c_bus[1].dev = dev;
 992         dev->i2c_bus[1].nr = 1;
 993         dev->i2c_bus[2].dev = dev;
 994         dev->i2c_bus[2].nr = 2;
 995
 996         /* Transport + Encoder ports 1, 2, 3, 4 - Defaults / setup */
 997         saa7164_port_init(dev, SAA7164_PORT_TS1);
 998         saa7164_port_init(dev, SAA7164_PORT_TS2);
 999         saa7164_port_init(dev, SAA7164_PORT_ENC1);
1000         saa7164_port_init(dev, SAA7164_PORT_ENC2);
1001         saa7164_port_init(dev, SAA7164_PORT_VBI1);
1002         saa7164_port_init(dev, SAA7164_PORT_VBI2);
1003
1004         if (get_resources(dev) < 0) {
1005                 printk(KERN_ERR "CORE %s No more PCIe resources for subsystem: %04x:%04x\n",
1006                        dev->name, dev->pci->subsystem_vendor,
1007                        dev->pci->subsystem_device);
1008
1009                 saa7164_devcount--;
1010                 return -ENODEV;
1011         }
1012
1013         /* PCI/e allocations */
1014         dev->lmmio = ioremap(pci_resource_start(dev->pci, 0),
1015                              pci_resource_len(dev->pci, 0));
1016
1017         dev->lmmio2 = ioremap(pci_resource_start(dev->pci, 2),
1018                              pci_resource_len(dev->pci, 2));
1019
1020         dev->bmmio = (u8 __iomem *)dev->lmmio;
1021         dev->bmmio2 = (u8 __iomem *)dev->lmmio2;
1022
1023         /* Interrupt and ack register locations offset of bmmio */
1024         dev->int_status = 0x183000 + 0xf80;
1025         dev->int_ack = 0x183000 + 0xf90;
1026
1027         printk(KERN_INFO
1028                 "CORE %s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
1029                dev->name, dev->pci->subsystem_vendor,
1030                dev->pci->subsystem_device, saa7164_boards[dev->board].name,
1031                dev->board, card[dev->nr] == dev->board ?
1032                "insmod option" : "autodetected");
1033
1034         saa7164_pci_quirks(dev);
1035
1036         return 0;
1037 }
1038
1039 static void saa7164_dev_unregister(struct saa7164_dev *dev)
1040 {
1041         dprintk(1, "%s()\n", __func__);
1042
1043         release_mem_region(pci_resource_start(dev->pci, 0),
1044                 pci_resource_len(dev->pci, 0));
1045
1046         release_mem_region(pci_resource_start(dev->pci, 2),
1047                 pci_resource_len(dev->pci, 2));
1048
1049         if (!atomic_dec_and_test(&dev->refcount))
1050                 return;
1051
1052         iounmap(dev->lmmio);
1053         iounmap(dev->lmmio2);
1054
1055         return;
1056 }
1057
1058 #ifdef CONFIG_PROC_FS
1059 static int saa7164_proc_show(struct seq_file *m, void *v)
1060 {
1061         struct saa7164_dev *dev;
1062         struct tmComResBusInfo *b;
1063         struct list_head *list;
1064         int i, c;
1065
1066         if (saa7164_devcount == 0)
1067                 return 0;
1068
1069         list_for_each(list, &saa7164_devlist) {
1070                 dev = list_entry(list, struct saa7164_dev, devlist);
1071                 seq_printf(m, "%s = %p\n", dev->name, dev);
1072
1073                 /* Lock the bus from any other access */
1074                 b = &dev->bus;
1075                 mutex_lock(&b->lock);
1076
1077                 seq_printf(m, " .m_pdwSetWritePos = 0x%x (0x%08x)\n",
1078                         b->m_dwSetReadPos, saa7164_readl(b->m_dwSetReadPos));
1079
1080                 seq_printf(m, " .m_pdwSetReadPos  = 0x%x (0x%08x)\n",
1081                         b->m_dwSetWritePos, saa7164_readl(b->m_dwSetWritePos));
1082
1083                 seq_printf(m, " .m_pdwGetWritePos = 0x%x (0x%08x)\n",
1084                         b->m_dwGetReadPos, saa7164_readl(b->m_dwGetReadPos));
1085
1086                 seq_printf(m, " .m_pdwGetReadPos  = 0x%x (0x%08x)\n",
1087                         b->m_dwGetWritePos, saa7164_readl(b->m_dwGetWritePos));
1088                 c = 0;
1089                 seq_printf(m, "\n  Set Ring:\n");
1090                 seq_printf(m, "\n addr  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
1091                 for (i = 0; i < b->m_dwSizeSetRing; i++) {
1092                         if (c == 0)
1093                                 seq_printf(m, " %04x:", i);
1094
1095                         seq_printf(m, " %02x", readb(b->m_pdwSetRing + i));
1096
1097                         if (++c == 16) {
1098                                 seq_printf(m, "\n");
1099                                 c = 0;
1100                         }
1101                 }
1102
1103                 c = 0;
1104                 seq_printf(m, "\n  Get Ring:\n");
1105                 seq_printf(m, "\n addr  00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
1106                 for (i = 0; i < b->m_dwSizeGetRing; i++) {
1107                         if (c == 0)
1108                                 seq_printf(m, " %04x:", i);
1109
1110                         seq_printf(m, " %02x", readb(b->m_pdwGetRing + i));
1111
1112                         if (++c == 16) {
1113                                 seq_printf(m, "\n");
1114                                 c = 0;
1115                         }
1116                 }
1117
1118                 mutex_unlock(&b->lock);
1119
1120         }
1121
1122         return 0;
1123 }
1124
1125 static int saa7164_proc_create(void)
1126 {
1127         struct proc_dir_entry *pe;
1128
1129         pe = proc_create_single("saa7164", S_IRUGO, NULL, saa7164_proc_show);
1130         if (!pe)
1131                 return -ENOMEM;
1132
1133         return 0;
1134 }
1135 #endif
1136
1137 static int saa7164_thread_function(void *data)
1138 {
1139         struct saa7164_dev *dev = data;
1140         struct tmFwInfoStruct fwinfo;
1141         u64 last_poll_time = 0;
1142
1143         dprintk(DBGLVL_THR, "thread started\n");
1144
1145         set_freezable();
1146
1147         while (1) {
1148                 msleep_interruptible(100);
1149                 if (kthread_should_stop())
1150                         break;
1151                 try_to_freeze();
1152
1153                 dprintk(DBGLVL_THR, "thread running\n");
1154
1155                 /* Dump the firmware debug message to console */
1156                 /* Polling this costs us 1-2% of the arm CPU */
1157                 /* convert this into a respnde to interrupt 0x7a */
1158                 saa7164_api_collect_debug(dev);
1159
1160                 /* Monitor CPU load every 1 second */
1161                 if ((last_poll_time + 1000 /* ms */) < jiffies_to_msecs(jiffies)) {
1162                         saa7164_api_get_load_info(dev, &fwinfo);
1163                         last_poll_time = jiffies_to_msecs(jiffies);
1164                 }
1165
1166         }
1167
1168         dprintk(DBGLVL_THR, "thread exiting\n");
1169         return 0;
1170 }
1171
1172 static bool saa7164_enable_msi(struct pci_dev *pci_dev, struct saa7164_dev *dev)
1173 {
1174         int err;
1175
1176         if (!enable_msi) {
1177                 printk(KERN_WARNING "%s() MSI disabled by module parameter 'enable_msi'"
1178                        , __func__);
1179                 return false;
1180         }
1181
1182         err = pci_enable_msi(pci_dev);
1183
1184         if (err) {
1185                 printk(KERN_ERR "%s() Failed to enable MSI interrupt. Falling back to a shared IRQ\n",
1186                        __func__);
1187                 return false;
1188         }
1189
1190         /* no error - so request an msi interrupt */
1191         err = request_irq(pci_dev->irq, saa7164_irq, 0,
1192                                                 dev->name, dev);
1193
1194         if (err) {
1195                 /* fall back to legacy interrupt */
1196                 printk(KERN_ERR "%s() Failed to get an MSI interrupt. Falling back to a shared IRQ\n",
1197                        __func__);
1198                 pci_disable_msi(pci_dev);
1199                 return false;
1200         }
1201
1202         return true;
1203 }
1204
1205 static int saa7164_initdev(struct pci_dev *pci_dev,
1206                            const struct pci_device_id *pci_id)
1207 {
1208         struct saa7164_dev *dev;
1209         int err, i;
1210         u32 version;
1211
1212         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1213         if (NULL == dev)
1214                 return -ENOMEM;
1215
1216         err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
1217         if (err < 0) {
1218                 dev_err(&pci_dev->dev, "v4l2_device_register failed\n");
1219                 goto fail_free;
1220         }
1221
1222         /* pci init */
1223         dev->pci = pci_dev;
1224         if (pci_enable_device(pci_dev)) {
1225                 err = -EIO;
1226                 goto fail_free;
1227         }
1228
1229         if (saa7164_dev_setup(dev) < 0) {
1230                 err = -EINVAL;
1231                 goto fail_free;
1232         }
1233
1234         /* print pci info */
1235         dev->pci_rev = pci_dev->revision;
1236         pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
1237         printk(KERN_INFO "%s/0: found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n",
1238                dev->name,
1239                pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
1240                dev->pci_lat,
1241                 (unsigned long long)pci_resource_start(pci_dev, 0));
1242
1243         pci_set_master(pci_dev);
1244         /* TODO */
1245         err = pci_set_dma_mask(pci_dev, 0xffffffff);
1246         if (err) {
1247                 printk("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
1248                 goto fail_irq;
1249         }
1250
1251         /* irq bit */
1252         if (saa7164_enable_msi(pci_dev, dev)) {
1253                 dev->msi = true;
1254         } else {
1255                 /* if we have an error (i.e. we don't have an interrupt)
1256                          or msi is not enabled - fallback to shared interrupt */
1257
1258                 err = request_irq(pci_dev->irq, saa7164_irq,
1259                                 IRQF_SHARED, dev->name, dev);
1260
1261                 if (err < 0) {
1262                         printk(KERN_ERR "%s: can't get IRQ %d\n", dev->name,
1263                                pci_dev->irq);
1264                         err = -EIO;
1265                         goto fail_irq;
1266                 }
1267         }
1268
1269         pci_set_drvdata(pci_dev, dev);
1270
1271         /* Init the internal command list */
1272         for (i = 0; i < SAA_CMD_MAX_MSG_UNITS; i++) {
1273                 dev->cmds[i].seqno = i;
1274                 dev->cmds[i].inuse = 0;
1275                 mutex_init(&dev->cmds[i].lock);
1276                 init_waitqueue_head(&dev->cmds[i].wait);
1277         }
1278
1279         /* We need a deferred interrupt handler for cmd handling */
1280         INIT_WORK(&dev->workcmd, saa7164_work_cmdhandler);
1281
1282         /* Only load the firmware if we know the board */
1283         if (dev->board != SAA7164_BOARD_UNKNOWN) {
1284
1285                 err = saa7164_downloadfirmware(dev);
1286                 if (err < 0) {
1287                         printk(KERN_ERR
1288                                 "Failed to boot firmware, no features registered\n");
1289                         goto fail_fw;
1290                 }
1291
1292                 saa7164_get_descriptors(dev);
1293                 saa7164_dumpregs(dev, 0);
1294                 saa7164_getcurrentfirmwareversion(dev);
1295                 saa7164_getfirmwarestatus(dev);
1296                 err = saa7164_bus_setup(dev);
1297                 if (err < 0)
1298                         printk(KERN_ERR
1299                                 "Failed to setup the bus, will continue\n");
1300                 saa7164_bus_dump(dev);
1301
1302                 /* Ping the running firmware via the command bus and get the
1303                  * firmware version, this checks the bus is running OK.
1304                  */
1305                 version = 0;
1306                 if (saa7164_api_get_fw_version(dev, &version) == SAA_OK)
1307                         dprintk(1, "Bus is operating correctly using version %d.%d.%d.%d (0x%x)\n",
1308                                 (version & 0x0000fc00) >> 10,
1309                                 (version & 0x000003e0) >> 5,
1310                                 (version & 0x0000001f),
1311                                 (version & 0xffff0000) >> 16,
1312                                 version);
1313                 else
1314                         printk(KERN_ERR
1315                                 "Failed to communicate with the firmware\n");
1316
1317                 /* Bring up the I2C buses */
1318                 saa7164_i2c_register(&dev->i2c_bus[0]);
1319                 saa7164_i2c_register(&dev->i2c_bus[1]);
1320                 saa7164_i2c_register(&dev->i2c_bus[2]);
1321                 saa7164_gpio_setup(dev);
1322                 saa7164_card_setup(dev);
1323
1324                 /* Parse the dynamic device configuration, find various
1325                  * media endpoints (MPEG, WMV, PS, TS) and cache their
1326                  * configuration details into the driver, so we can
1327                  * reference them later during simething_register() func,
1328                  * interrupt handlers, deferred work handlers etc.
1329                  */
1330                 saa7164_api_enum_subdevs(dev);
1331
1332                 /* Begin to create the video sub-systems and register funcs */
1333                 if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB) {
1334                         if (saa7164_dvb_register(&dev->ports[SAA7164_PORT_TS1]) < 0) {
1335                                 printk(KERN_ERR "%s() Failed to register dvb adapters on porta\n",
1336                                         __func__);
1337                         }
1338                 }
1339
1340                 if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB) {
1341                         if (saa7164_dvb_register(&dev->ports[SAA7164_PORT_TS2]) < 0) {
1342                                 printk(KERN_ERR"%s() Failed to register dvb adapters on portb\n",
1343                                         __func__);
1344                         }
1345                 }
1346
1347                 if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER) {
1348                         if (saa7164_encoder_register(&dev->ports[SAA7164_PORT_ENC1]) < 0) {
1349                                 printk(KERN_ERR"%s() Failed to register mpeg encoder\n",
1350                                        __func__);
1351                         }
1352                 }
1353
1354                 if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER) {
1355                         if (saa7164_encoder_register(&dev->ports[SAA7164_PORT_ENC2]) < 0) {
1356                                 printk(KERN_ERR"%s() Failed to register mpeg encoder\n",
1357                                        __func__);
1358                         }
1359                 }
1360
1361                 if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI) {
1362                         if (saa7164_vbi_register(&dev->ports[SAA7164_PORT_VBI1]) < 0) {
1363                                 printk(KERN_ERR"%s() Failed to register vbi device\n",
1364                                        __func__);
1365                         }
1366                 }
1367
1368                 if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI) {
1369                         if (saa7164_vbi_register(&dev->ports[SAA7164_PORT_VBI2]) < 0) {
1370                                 printk(KERN_ERR"%s() Failed to register vbi device\n",
1371                                        __func__);
1372                         }
1373                 }
1374                 saa7164_api_set_debug(dev, fw_debug);
1375
1376                 if (fw_debug) {
1377                         dev->kthread = kthread_run(saa7164_thread_function, dev,
1378                                 "saa7164 debug");
1379                         if (IS_ERR(dev->kthread)) {
1380                                 dev->kthread = NULL;
1381                                 printk(KERN_ERR "%s() Failed to create debug kernel thread\n",
1382                                        __func__);
1383                         }
1384                 }
1385
1386         } /* != BOARD_UNKNOWN */
1387         else
1388                 printk(KERN_ERR "%s() Unsupported board detected, registering without firmware\n",
1389                        __func__);
1390
1391         dprintk(1, "%s() parameter debug = %d\n", __func__, saa_debug);
1392         dprintk(1, "%s() parameter waitsecs = %d\n", __func__, waitsecs);
1393
1394 fail_fw:
1395         return 0;
1396
1397 fail_irq:
1398         saa7164_dev_unregister(dev);
1399 fail_free:
1400         v4l2_device_unregister(&dev->v4l2_dev);
1401         kfree(dev);
1402         return err;
1403 }
1404
1405 static void saa7164_shutdown(struct saa7164_dev *dev)
1406 {
1407         dprintk(1, "%s()\n", __func__);
1408 }
1409
1410 static void saa7164_finidev(struct pci_dev *pci_dev)
1411 {
1412         struct saa7164_dev *dev = pci_get_drvdata(pci_dev);
1413
1414         if (dev->board != SAA7164_BOARD_UNKNOWN) {
1415                 if (fw_debug && dev->kthread) {
1416                         kthread_stop(dev->kthread);
1417                         dev->kthread = NULL;
1418                 }
1419                 if (dev->firmwareloaded)
1420                         saa7164_api_set_debug(dev, 0x00);
1421         }
1422
1423         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1424                 &dev->ports[SAA7164_PORT_ENC1].irq_interval);
1425         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1426                 &dev->ports[SAA7164_PORT_ENC1].svc_interval);
1427         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1428                 &dev->ports[SAA7164_PORT_ENC1].irq_svc_interval);
1429         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1430                 &dev->ports[SAA7164_PORT_ENC1].read_interval);
1431         saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1432                 &dev->ports[SAA7164_PORT_ENC1].poll_interval);
1433         saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI1],
1434                 &dev->ports[SAA7164_PORT_VBI1].read_interval);
1435         saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI2],
1436                 &dev->ports[SAA7164_PORT_VBI2].poll_interval);
1437
1438         saa7164_shutdown(dev);
1439
1440         if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB)
1441                 saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS1]);
1442
1443         if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB)
1444                 saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS2]);
1445
1446         if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER)
1447                 saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC1]);
1448
1449         if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER)
1450                 saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC2]);
1451
1452         if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI)
1453                 saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI1]);
1454
1455         if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI)
1456                 saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI2]);
1457
1458         saa7164_i2c_unregister(&dev->i2c_bus[0]);
1459         saa7164_i2c_unregister(&dev->i2c_bus[1]);
1460         saa7164_i2c_unregister(&dev->i2c_bus[2]);
1461
1462         /* unregister stuff */
1463         free_irq(pci_dev->irq, dev);
1464
1465         if (dev->msi) {
1466                 pci_disable_msi(pci_dev);
1467                 dev->msi = false;
1468         }
1469
1470         pci_disable_device(pci_dev);
1471
1472         mutex_lock(&devlist);
1473         list_del(&dev->devlist);
1474         mutex_unlock(&devlist);
1475
1476         saa7164_dev_unregister(dev);
1477         v4l2_device_unregister(&dev->v4l2_dev);
1478         kfree(dev);
1479 }
1480
1481 static const struct pci_device_id saa7164_pci_tbl[] = {
1482         {
1483                 /* SAA7164 */
1484                 .vendor       = 0x1131,
1485                 .device       = 0x7164,
1486                 .subvendor    = PCI_ANY_ID,
1487                 .subdevice    = PCI_ANY_ID,
1488         }, {
1489                 /* --- end of list --- */
1490         }
1491 };
1492 MODULE_DEVICE_TABLE(pci, saa7164_pci_tbl);
1493
1494 static struct pci_driver saa7164_pci_driver = {
1495         .name     = "saa7164",
1496         .id_table = saa7164_pci_tbl,
1497         .probe    = saa7164_initdev,
1498         .remove   = saa7164_finidev,
1499         /* TODO */
1500         .suspend  = NULL,
1501         .resume   = NULL,
1502 };
1503
1504 static int __init saa7164_init(void)
1505 {
1506         printk(KERN_INFO "saa7164 driver loaded\n");
1507
1508 #ifdef CONFIG_PROC_FS
1509         saa7164_proc_create();
1510 #endif
1511         return pci_register_driver(&saa7164_pci_driver);
1512 }
1513
1514 static void __exit saa7164_fini(void)
1515 {
1516 #ifdef CONFIG_PROC_FS
1517         remove_proc_entry("saa7164", NULL);
1518 #endif
1519         pci_unregister_driver(&saa7164_pci_driver);
1520 }
1521
1522 module_init(saa7164_init);
1523 module_exit(saa7164_fini);
1524