linux/drivers/media/pci/saa7164/saa7164-core.c
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   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
  38MODULE_DESCRIPTION("Driver for NXP SAA7164 based TV cards");
  39MODULE_AUTHOR("Steven Toth <stoth@kernellabs.com>");
  40MODULE_LICENSE("GPL");
  41
  42/*
  43 *  1 Basic
  44 *  2
  45 *  4 i2c
  46 *  8 api
  47 * 16 cmd
  48 * 32 bus
  49 */
  50
  51unsigned int saa_debug;
  52module_param_named(debug, saa_debug, int, 0644);
  53MODULE_PARM_DESC(debug, "enable debug messages");
  54
  55unsigned int fw_debug;
  56module_param(fw_debug, int, 0644);
  57MODULE_PARM_DESC(fw_debug, "Firmware debug level def:2");
  58
  59unsigned int encoder_buffers = SAA7164_MAX_ENCODER_BUFFERS;
  60module_param(encoder_buffers, int, 0644);
  61MODULE_PARM_DESC(encoder_buffers, "Total buffers in read queue 16-512 def:64");
  62
  63unsigned int vbi_buffers = SAA7164_MAX_VBI_BUFFERS;
  64module_param(vbi_buffers, int, 0644);
  65MODULE_PARM_DESC(vbi_buffers, "Total buffers in read queue 16-512 def:64");
  66
  67unsigned int waitsecs = 10;
  68module_param(waitsecs, int, 0644);
  69MODULE_PARM_DESC(waitsecs, "timeout on firmware messages");
  70
  71static unsigned int card[]  = {[0 ... (SAA7164_MAXBOARDS - 1)] = UNSET };
  72module_param_array(card,  int, NULL, 0444);
  73MODULE_PARM_DESC(card, "card type");
  74
  75unsigned int print_histogram = 64;
  76module_param(print_histogram, int, 0644);
  77MODULE_PARM_DESC(print_histogram, "print histogram values once");
  78
  79unsigned int crc_checking = 1;
  80module_param(crc_checking, int, 0644);
  81MODULE_PARM_DESC(crc_checking, "enable crc sanity checking on buffers");
  82
  83unsigned int guard_checking = 1;
  84module_param(guard_checking, int, 0644);
  85MODULE_PARM_DESC(guard_checking,
  86        "enable dma sanity checking for buffer overruns");
  87
  88static unsigned int saa7164_devcount;
  89
  90static DEFINE_MUTEX(devlist);
  91LIST_HEAD(saa7164_devlist);
  92
  93#define INT_SIZE 16
  94
  95static 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
 116static 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
 176static 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
 223void 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
 235static 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
 256static 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
 361static 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
 438static 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
 514static 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
 522static 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
 532static 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
 557static 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
 581static 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 */
 619static 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        }
 719out:
 720        return IRQ_RETVAL(handled);
 721}
 722
 723void 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
 744u32 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 */
 760void 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
 790static 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
 820static 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
 842static 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 */
 860static 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
 885static int saa7164_pci_quirks(struct saa7164_dev *dev)
 886{
 887        return 0;
 888}
 889
 890static 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
 908static 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
 958static 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
1043static 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
1063static 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
1129static int saa7164_proc_open(struct inode *inode, struct file *filp)
1130{
1131        return single_open(filp, saa7164_proc_show, NULL);
1132}
1133
1134static 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
1141static 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
1153static 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
1188static 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 | IRQF_DISABLED, 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 (!dev->kthread)
1358                                printk(KERN_ERR "%s() Failed to create "
1359                                        "debug kernel thread\n", __func__);
1360                }
1361
1362        } /* != BOARD_UNKNOWN */
1363        else
1364                printk(KERN_ERR "%s() Unsupported board detected, "
1365                        "registering without firmware\n", __func__);
1366
1367        dprintk(1, "%s() parameter debug = %d\n", __func__, saa_debug);
1368        dprintk(1, "%s() parameter waitsecs = %d\n", __func__, waitsecs);
1369
1370fail_fw:
1371        return 0;
1372
1373fail_irq:
1374        saa7164_dev_unregister(dev);
1375fail_free:
1376        v4l2_device_unregister(&dev->v4l2_dev);
1377        kfree(dev);
1378        return err;
1379}
1380
1381static void saa7164_shutdown(struct saa7164_dev *dev)
1382{
1383        dprintk(1, "%s()\n", __func__);
1384}
1385
1386static void saa7164_finidev(struct pci_dev *pci_dev)
1387{
1388        struct saa7164_dev *dev = pci_get_drvdata(pci_dev);
1389
1390        if (dev->board != SAA7164_BOARD_UNKNOWN) {
1391                if (fw_debug && dev->kthread) {
1392                        kthread_stop(dev->kthread);
1393                        dev->kthread = NULL;
1394                }
1395                if (dev->firmwareloaded)
1396                        saa7164_api_set_debug(dev, 0x00);
1397        }
1398
1399        saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1400                &dev->ports[SAA7164_PORT_ENC1].irq_interval);
1401        saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1402                &dev->ports[SAA7164_PORT_ENC1].svc_interval);
1403        saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1404                &dev->ports[SAA7164_PORT_ENC1].irq_svc_interval);
1405        saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1406                &dev->ports[SAA7164_PORT_ENC1].read_interval);
1407        saa7164_histogram_print(&dev->ports[SAA7164_PORT_ENC1],
1408                &dev->ports[SAA7164_PORT_ENC1].poll_interval);
1409        saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI1],
1410                &dev->ports[SAA7164_PORT_VBI1].read_interval);
1411        saa7164_histogram_print(&dev->ports[SAA7164_PORT_VBI2],
1412                &dev->ports[SAA7164_PORT_VBI2].poll_interval);
1413
1414        saa7164_shutdown(dev);
1415
1416        if (saa7164_boards[dev->board].porta == SAA7164_MPEG_DVB)
1417                saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS1]);
1418
1419        if (saa7164_boards[dev->board].portb == SAA7164_MPEG_DVB)
1420                saa7164_dvb_unregister(&dev->ports[SAA7164_PORT_TS2]);
1421
1422        if (saa7164_boards[dev->board].portc == SAA7164_MPEG_ENCODER)
1423                saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC1]);
1424
1425        if (saa7164_boards[dev->board].portd == SAA7164_MPEG_ENCODER)
1426                saa7164_encoder_unregister(&dev->ports[SAA7164_PORT_ENC2]);
1427
1428        if (saa7164_boards[dev->board].porte == SAA7164_MPEG_VBI)
1429                saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI1]);
1430
1431        if (saa7164_boards[dev->board].portf == SAA7164_MPEG_VBI)
1432                saa7164_vbi_unregister(&dev->ports[SAA7164_PORT_VBI2]);
1433
1434        saa7164_i2c_unregister(&dev->i2c_bus[0]);
1435        saa7164_i2c_unregister(&dev->i2c_bus[1]);
1436        saa7164_i2c_unregister(&dev->i2c_bus[2]);
1437
1438        pci_disable_device(pci_dev);
1439
1440        /* unregister stuff */
1441        free_irq(pci_dev->irq, dev);
1442        pci_set_drvdata(pci_dev, NULL);
1443
1444        mutex_lock(&devlist);
1445        list_del(&dev->devlist);
1446        mutex_unlock(&devlist);
1447
1448        saa7164_dev_unregister(dev);
1449        v4l2_device_unregister(&dev->v4l2_dev);
1450        kfree(dev);
1451}
1452
1453static struct pci_device_id saa7164_pci_tbl[] = {
1454        {
1455                /* SAA7164 */
1456                .vendor       = 0x1131,
1457                .device       = 0x7164,
1458                .subvendor    = PCI_ANY_ID,
1459                .subdevice    = PCI_ANY_ID,
1460        }, {
1461                /* --- end of list --- */
1462        }
1463};
1464MODULE_DEVICE_TABLE(pci, saa7164_pci_tbl);
1465
1466static struct pci_driver saa7164_pci_driver = {
1467        .name     = "saa7164",
1468        .id_table = saa7164_pci_tbl,
1469        .probe    = saa7164_initdev,
1470        .remove   = saa7164_finidev,
1471        /* TODO */
1472        .suspend  = NULL,
1473        .resume   = NULL,
1474};
1475
1476static int __init saa7164_init(void)
1477{
1478        printk(KERN_INFO "saa7164 driver loaded\n");
1479
1480#ifdef CONFIG_PROC_FS
1481        saa7164_proc_create();
1482#endif
1483        return pci_register_driver(&saa7164_pci_driver);
1484}
1485
1486static void __exit saa7164_fini(void)
1487{
1488#ifdef CONFIG_PROC_FS
1489        remove_proc_entry("saa7164", NULL);
1490#endif
1491        pci_unregister_driver(&saa7164_pci_driver);
1492}
1493
1494module_init(saa7164_init);
1495module_exit(saa7164_fini);
1496
1497