linux/drivers/media/pci/saa7164/saa7164-fw.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Driver for the NXP SAA7164 PCIe bridge
   4 *
   5 *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
   6 */
   7
   8#include <linux/firmware.h>
   9#include <linux/slab.h>
  10
  11#include "saa7164.h"
  12
  13#define SAA7164_REV2_FIRMWARE           "NXP7164-2010-03-10.1.fw"
  14#define SAA7164_REV2_FIRMWARE_SIZE      4019072
  15
  16#define SAA7164_REV3_FIRMWARE           "NXP7164-2010-03-10.1.fw"
  17#define SAA7164_REV3_FIRMWARE_SIZE      4019072
  18
  19struct fw_header {
  20        u32     firmwaresize;
  21        u32     bslsize;
  22        u32     reserved;
  23        u32     version;
  24};
  25
  26static int saa7164_dl_wait_ack(struct saa7164_dev *dev, u32 reg)
  27{
  28        u32 timeout = SAA_DEVICE_TIMEOUT;
  29        while ((saa7164_readl(reg) & 0x01) == 0) {
  30                timeout -= 10;
  31                if (timeout == 0) {
  32                        printk(KERN_ERR "%s() timeout (no d/l ack)\n",
  33                                __func__);
  34                        return -EBUSY;
  35                }
  36                msleep(100);
  37        }
  38
  39        return 0;
  40}
  41
  42static int saa7164_dl_wait_clr(struct saa7164_dev *dev, u32 reg)
  43{
  44        u32 timeout = SAA_DEVICE_TIMEOUT;
  45        while (saa7164_readl(reg) & 0x01) {
  46                timeout -= 10;
  47                if (timeout == 0) {
  48                        printk(KERN_ERR "%s() timeout (no d/l clr)\n",
  49                                __func__);
  50                        return -EBUSY;
  51                }
  52                msleep(100);
  53        }
  54
  55        return 0;
  56}
  57
  58/* TODO: move dlflags into dev-> and change to write/readl/b */
  59/* TODO: Excessive levels of debug */
  60static int saa7164_downloadimage(struct saa7164_dev *dev, u8 *src, u32 srcsize,
  61                                 u32 dlflags, u8 __iomem *dst, u32 dstsize)
  62{
  63        u32 reg, timeout, offset;
  64        u8 *srcbuf = NULL;
  65        int ret;
  66
  67        u32 dlflag = dlflags;
  68        u32 dlflag_ack = dlflag + 4;
  69        u32 drflag = dlflag_ack + 4;
  70        u32 drflag_ack = drflag + 4;
  71        u32 bleflag = drflag_ack + 4;
  72
  73        dprintk(DBGLVL_FW,
  74                "%s(image=%p, size=%d, flags=0x%x, dst=%p, dstsize=0x%x)\n",
  75                __func__, src, srcsize, dlflags, dst, dstsize);
  76
  77        if ((src == NULL) || (dst == NULL)) {
  78                ret = -EIO;
  79                goto out;
  80        }
  81
  82        srcbuf = kzalloc(4 * 1048576, GFP_KERNEL);
  83        if (NULL == srcbuf) {
  84                ret = -ENOMEM;
  85                goto out;
  86        }
  87
  88        if (srcsize > (4*1048576)) {
  89                ret = -ENOMEM;
  90                goto out;
  91        }
  92
  93        memcpy(srcbuf, src, srcsize);
  94
  95        dprintk(DBGLVL_FW, "%s() dlflag = 0x%x\n", __func__, dlflag);
  96        dprintk(DBGLVL_FW, "%s() dlflag_ack = 0x%x\n", __func__, dlflag_ack);
  97        dprintk(DBGLVL_FW, "%s() drflag = 0x%x\n", __func__, drflag);
  98        dprintk(DBGLVL_FW, "%s() drflag_ack = 0x%x\n", __func__, drflag_ack);
  99        dprintk(DBGLVL_FW, "%s() bleflag = 0x%x\n", __func__, bleflag);
 100
 101        reg = saa7164_readl(dlflag);
 102        dprintk(DBGLVL_FW, "%s() dlflag (0x%x)= 0x%x\n", __func__, dlflag, reg);
 103        if (reg == 1)
 104                dprintk(DBGLVL_FW,
 105                        "%s() Download flag already set, please reboot\n",
 106                        __func__);
 107
 108        /* Indicate download start */
 109        saa7164_writel(dlflag, 1);
 110        ret = saa7164_dl_wait_ack(dev, dlflag_ack);
 111        if (ret < 0)
 112                goto out;
 113
 114        /* Ack download start, then wait for wait */
 115        saa7164_writel(dlflag, 0);
 116        ret = saa7164_dl_wait_clr(dev, dlflag_ack);
 117        if (ret < 0)
 118                goto out;
 119
 120        /* Deal with the raw firmware, in the appropriate chunk size */
 121        for (offset = 0; srcsize > dstsize;
 122                srcsize -= dstsize, offset += dstsize) {
 123
 124                dprintk(DBGLVL_FW, "%s() memcpy %d\n", __func__, dstsize);
 125                memcpy_toio(dst, srcbuf + offset, dstsize);
 126
 127                /* Flag the data as ready */
 128                saa7164_writel(drflag, 1);
 129                ret = saa7164_dl_wait_ack(dev, drflag_ack);
 130                if (ret < 0)
 131                        goto out;
 132
 133                /* Wait for indication data was received */
 134                saa7164_writel(drflag, 0);
 135                ret = saa7164_dl_wait_clr(dev, drflag_ack);
 136                if (ret < 0)
 137                        goto out;
 138
 139        }
 140
 141        dprintk(DBGLVL_FW, "%s() memcpy(l) %d\n", __func__, dstsize);
 142        /* Write last block to the device */
 143        memcpy_toio(dst, srcbuf+offset, srcsize);
 144
 145        /* Flag the data as ready */
 146        saa7164_writel(drflag, 1);
 147        ret = saa7164_dl_wait_ack(dev, drflag_ack);
 148        if (ret < 0)
 149                goto out;
 150
 151        saa7164_writel(drflag, 0);
 152        timeout = 0;
 153        while (saa7164_readl(bleflag) != SAA_DEVICE_IMAGE_BOOTING) {
 154                if (saa7164_readl(bleflag) & SAA_DEVICE_IMAGE_CORRUPT) {
 155                        printk(KERN_ERR "%s() image corrupt\n", __func__);
 156                        ret = -EBUSY;
 157                        goto out;
 158                }
 159
 160                if (saa7164_readl(bleflag) & SAA_DEVICE_MEMORY_CORRUPT) {
 161                        printk(KERN_ERR "%s() device memory corrupt\n",
 162                                __func__);
 163                        ret = -EBUSY;
 164                        goto out;
 165                }
 166
 167                msleep(10); /* Checkpatch throws a < 20ms warning */
 168                if (timeout++ > 60)
 169                        break;
 170        }
 171
 172        printk(KERN_INFO "%s() Image downloaded, booting...\n", __func__);
 173
 174        ret = saa7164_dl_wait_clr(dev, drflag_ack);
 175        if (ret < 0)
 176                goto out;
 177
 178        printk(KERN_INFO "%s() Image booted successfully.\n", __func__);
 179        ret = 0;
 180
 181out:
 182        kfree(srcbuf);
 183        return ret;
 184}
 185
 186/* TODO: Excessive debug */
 187/* Load the firmware. Optionally it can be in ROM or newer versions
 188 * can be on disk, saving the expense of the ROM hardware. */
 189int saa7164_downloadfirmware(struct saa7164_dev *dev)
 190{
 191        /* u32 second_timeout = 60 * SAA_DEVICE_TIMEOUT; */
 192        u32 tmp, filesize, version, err_flags, first_timeout, fwlength;
 193        u32 second_timeout, updatebootloader = 1, bootloadersize = 0;
 194        const struct firmware *fw = NULL;
 195        struct fw_header *hdr, *boothdr = NULL, *fwhdr;
 196        u32 bootloaderversion = 0, fwloadersize;
 197        u8 *bootloaderoffset = NULL, *fwloaderoffset;
 198        char *fwname;
 199        int ret;
 200
 201        dprintk(DBGLVL_FW, "%s()\n", __func__);
 202
 203        if (saa7164_boards[dev->board].chiprev == SAA7164_CHIP_REV2) {
 204                fwname = SAA7164_REV2_FIRMWARE;
 205                fwlength = SAA7164_REV2_FIRMWARE_SIZE;
 206        } else {
 207                fwname = SAA7164_REV3_FIRMWARE;
 208                fwlength = SAA7164_REV3_FIRMWARE_SIZE;
 209        }
 210
 211        version = saa7164_getcurrentfirmwareversion(dev);
 212
 213        if (version == 0x00) {
 214
 215                second_timeout = 100;
 216                first_timeout = 100;
 217                err_flags = saa7164_readl(SAA_BOOTLOADERERROR_FLAGS);
 218                dprintk(DBGLVL_FW, "%s() err_flags = %x\n",
 219                        __func__, err_flags);
 220
 221                while (err_flags != SAA_DEVICE_IMAGE_BOOTING) {
 222                        dprintk(DBGLVL_FW, "%s() err_flags = %x\n",
 223                                __func__, err_flags);
 224                        msleep(10); /* Checkpatch throws a < 20ms warning */
 225
 226                        if (err_flags & SAA_DEVICE_IMAGE_CORRUPT) {
 227                                printk(KERN_ERR "%s() firmware corrupt\n",
 228                                        __func__);
 229                                break;
 230                        }
 231                        if (err_flags & SAA_DEVICE_MEMORY_CORRUPT) {
 232                                printk(KERN_ERR "%s() device memory corrupt\n",
 233                                        __func__);
 234                                break;
 235                        }
 236                        if (err_flags & SAA_DEVICE_NO_IMAGE) {
 237                                printk(KERN_ERR "%s() no first image\n",
 238                                __func__);
 239                                break;
 240                        }
 241                        if (err_flags & SAA_DEVICE_IMAGE_SEARCHING) {
 242                                first_timeout -= 10;
 243                                if (first_timeout == 0) {
 244                                        printk(KERN_ERR
 245                                                "%s() no first image\n",
 246                                                __func__);
 247                                        break;
 248                                }
 249                        } else if (err_flags & SAA_DEVICE_IMAGE_LOADING) {
 250                                second_timeout -= 10;
 251                                if (second_timeout == 0) {
 252                                        printk(KERN_ERR
 253                                        "%s() FW load time exceeded\n",
 254                                                __func__);
 255                                        break;
 256                                }
 257                        } else {
 258                                second_timeout -= 10;
 259                                if (second_timeout == 0) {
 260                                        printk(KERN_ERR
 261                                        "%s() Unknown bootloader flags 0x%x\n",
 262                                                __func__, err_flags);
 263                                        break;
 264                                }
 265                        }
 266
 267                        err_flags = saa7164_readl(SAA_BOOTLOADERERROR_FLAGS);
 268                } /* While != Booting */
 269
 270                if (err_flags == SAA_DEVICE_IMAGE_BOOTING) {
 271                        dprintk(DBGLVL_FW, "%s() Loader 1 has loaded.\n",
 272                                __func__);
 273                        first_timeout = SAA_DEVICE_TIMEOUT;
 274                        second_timeout = 60 * SAA_DEVICE_TIMEOUT;
 275                        second_timeout = 100;
 276
 277                        err_flags = saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS);
 278                        dprintk(DBGLVL_FW, "%s() err_flags2 = %x\n",
 279                                __func__, err_flags);
 280                        while (err_flags != SAA_DEVICE_IMAGE_BOOTING) {
 281                                dprintk(DBGLVL_FW, "%s() err_flags2 = %x\n",
 282                                        __func__, err_flags);
 283                                msleep(10); /* Checkpatch throws a < 20ms warning */
 284
 285                                if (err_flags & SAA_DEVICE_IMAGE_CORRUPT) {
 286                                        printk(KERN_ERR
 287                                                "%s() firmware corrupt\n",
 288                                                __func__);
 289                                        break;
 290                                }
 291                                if (err_flags & SAA_DEVICE_MEMORY_CORRUPT) {
 292                                        printk(KERN_ERR
 293                                                "%s() device memory corrupt\n",
 294                                                __func__);
 295                                        break;
 296                                }
 297                                if (err_flags & SAA_DEVICE_NO_IMAGE) {
 298                                        printk(KERN_ERR "%s() no second image\n",
 299                                                __func__);
 300                                        break;
 301                                }
 302                                if (err_flags & SAA_DEVICE_IMAGE_SEARCHING) {
 303                                        first_timeout -= 10;
 304                                        if (first_timeout == 0) {
 305                                                printk(KERN_ERR
 306                                                "%s() no second image\n",
 307                                                        __func__);
 308                                                break;
 309                                        }
 310                                } else if (err_flags &
 311                                        SAA_DEVICE_IMAGE_LOADING) {
 312                                        second_timeout -= 10;
 313                                        if (second_timeout == 0) {
 314                                                printk(KERN_ERR
 315                                                "%s() FW load time exceeded\n",
 316                                                        __func__);
 317                                                break;
 318                                        }
 319                                } else {
 320                                        second_timeout -= 10;
 321                                        if (second_timeout == 0) {
 322                                                printk(KERN_ERR
 323                                        "%s() Unknown bootloader flags 0x%x\n",
 324                                                        __func__, err_flags);
 325                                                break;
 326                                        }
 327                                }
 328
 329                                err_flags =
 330                                saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS);
 331                        } /* err_flags != SAA_DEVICE_IMAGE_BOOTING */
 332
 333                        dprintk(DBGLVL_FW, "%s() Loader flags 1:0x%x 2:0x%x.\n",
 334                                __func__,
 335                                saa7164_readl(SAA_BOOTLOADERERROR_FLAGS),
 336                                saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS));
 337
 338                } /* err_flags == SAA_DEVICE_IMAGE_BOOTING */
 339
 340                /* It's possible for both firmwares to have booted,
 341                 * but that doesn't mean they've finished booting yet.
 342                 */
 343                if ((saa7164_readl(SAA_BOOTLOADERERROR_FLAGS) ==
 344                        SAA_DEVICE_IMAGE_BOOTING) &&
 345                        (saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS) ==
 346                        SAA_DEVICE_IMAGE_BOOTING)) {
 347
 348
 349                        dprintk(DBGLVL_FW, "%s() Loader 2 has loaded.\n",
 350                                __func__);
 351
 352                        first_timeout = SAA_DEVICE_TIMEOUT;
 353                        while (first_timeout) {
 354                                msleep(10); /* Checkpatch throws a < 20ms warning */
 355
 356                                version =
 357                                        saa7164_getcurrentfirmwareversion(dev);
 358                                if (version) {
 359                                        dprintk(DBGLVL_FW,
 360                                        "%s() All f/w loaded successfully\n",
 361                                                __func__);
 362                                        break;
 363                                } else {
 364                                        first_timeout -= 10;
 365                                        if (first_timeout == 0) {
 366                                                printk(KERN_ERR
 367                                                "%s() FW did not boot\n",
 368                                                        __func__);
 369                                                break;
 370                                        }
 371                                }
 372                        }
 373                }
 374                version = saa7164_getcurrentfirmwareversion(dev);
 375        } /* version == 0 */
 376
 377        /* Has the firmware really booted? */
 378        if ((saa7164_readl(SAA_BOOTLOADERERROR_FLAGS) ==
 379                SAA_DEVICE_IMAGE_BOOTING) &&
 380                (saa7164_readl(SAA_SECONDSTAGEERROR_FLAGS) ==
 381                SAA_DEVICE_IMAGE_BOOTING) && (version == 0)) {
 382
 383                printk(KERN_ERR
 384                        "%s() The firmware hung, probably bad firmware\n",
 385                        __func__);
 386
 387                /* Tell the second stage loader we have a deadlock */
 388                saa7164_writel(SAA_DEVICE_DEADLOCK_DETECTED_OFFSET,
 389                        SAA_DEVICE_DEADLOCK_DETECTED);
 390
 391                saa7164_getfirmwarestatus(dev);
 392
 393                return -ENOMEM;
 394        }
 395
 396        dprintk(DBGLVL_FW, "Device has Firmware Version %d.%d.%d.%d\n",
 397                (version & 0x0000fc00) >> 10,
 398                (version & 0x000003e0) >> 5,
 399                (version & 0x0000001f),
 400                (version & 0xffff0000) >> 16);
 401
 402        /* Load the firmware from the disk if required */
 403        if (version == 0) {
 404
 405                printk(KERN_INFO "%s() Waiting for firmware upload (%s)\n",
 406                        __func__, fwname);
 407
 408                ret = request_firmware(&fw, fwname, &dev->pci->dev);
 409                if (ret) {
 410                        printk(KERN_ERR "%s() Upload failed. (file not found?)\n",
 411                               __func__);
 412                        return -ENOMEM;
 413                }
 414
 415                printk(KERN_INFO "%s() firmware read %zu bytes.\n",
 416                        __func__, fw->size);
 417
 418                if (fw->size != fwlength) {
 419                        printk(KERN_ERR "saa7164: firmware incorrect size %zu != %u\n",
 420                                fw->size, fwlength);
 421                        ret = -ENOMEM;
 422                        goto out;
 423                }
 424
 425                printk(KERN_INFO "%s() firmware loaded.\n", __func__);
 426
 427                hdr = (struct fw_header *)fw->data;
 428                printk(KERN_INFO "Firmware file header part 1:\n");
 429                printk(KERN_INFO " .FirmwareSize = 0x%x\n", hdr->firmwaresize);
 430                printk(KERN_INFO " .BSLSize = 0x%x\n", hdr->bslsize);
 431                printk(KERN_INFO " .Reserved = 0x%x\n", hdr->reserved);
 432                printk(KERN_INFO " .Version = 0x%x\n", hdr->version);
 433
 434                /* Retrieve bootloader if reqd */
 435                if ((hdr->firmwaresize == 0) && (hdr->bslsize == 0))
 436                        /* Second bootloader in the firmware file */
 437                        filesize = hdr->reserved * 16;
 438                else
 439                        filesize = (hdr->firmwaresize + hdr->bslsize) *
 440                                16 + sizeof(struct fw_header);
 441
 442                printk(KERN_INFO "%s() SecBootLoader.FileSize = %d\n",
 443                        __func__, filesize);
 444
 445                /* Get bootloader (if reqd) and firmware header */
 446                if ((hdr->firmwaresize == 0) && (hdr->bslsize == 0)) {
 447                        /* Second boot loader is required */
 448
 449                        /* Get the loader header */
 450                        boothdr = (struct fw_header *)(fw->data +
 451                                sizeof(struct fw_header));
 452
 453                        bootloaderversion =
 454                                saa7164_readl(SAA_DEVICE_2ND_VERSION);
 455                        dprintk(DBGLVL_FW, "Onboard BootLoader:\n");
 456                        dprintk(DBGLVL_FW, "->Flag 0x%x\n",
 457                                saa7164_readl(SAA_BOOTLOADERERROR_FLAGS));
 458                        dprintk(DBGLVL_FW, "->Ack 0x%x\n",
 459                                saa7164_readl(SAA_DATAREADY_FLAG_ACK));
 460                        dprintk(DBGLVL_FW, "->FW Version 0x%x\n", version);
 461                        dprintk(DBGLVL_FW, "->Loader Version 0x%x\n",
 462                                bootloaderversion);
 463
 464                        if ((saa7164_readl(SAA_BOOTLOADERERROR_FLAGS) ==
 465                                0x03) && (saa7164_readl(SAA_DATAREADY_FLAG_ACK)
 466                                == 0x00) && (version == 0x00)) {
 467
 468                                dprintk(DBGLVL_FW, "BootLoader version in  rom %d.%d.%d.%d\n",
 469                                        (bootloaderversion & 0x0000fc00) >> 10,
 470                                        (bootloaderversion & 0x000003e0) >> 5,
 471                                        (bootloaderversion & 0x0000001f),
 472                                        (bootloaderversion & 0xffff0000) >> 16
 473                                        );
 474                                dprintk(DBGLVL_FW, "BootLoader version in file %d.%d.%d.%d\n",
 475                                        (boothdr->version & 0x0000fc00) >> 10,
 476                                        (boothdr->version & 0x000003e0) >> 5,
 477                                        (boothdr->version & 0x0000001f),
 478                                        (boothdr->version & 0xffff0000) >> 16
 479                                        );
 480
 481                                if (bootloaderversion == boothdr->version)
 482                                        updatebootloader = 0;
 483                        }
 484
 485                        /* Calculate offset to firmware header */
 486                        tmp = (boothdr->firmwaresize + boothdr->bslsize) * 16 +
 487                                (sizeof(struct fw_header) +
 488                                sizeof(struct fw_header));
 489
 490                        fwhdr = (struct fw_header *)(fw->data+tmp);
 491                } else {
 492                        /* No second boot loader */
 493                        fwhdr = hdr;
 494                }
 495
 496                dprintk(DBGLVL_FW, "Firmware version in file %d.%d.%d.%d\n",
 497                        (fwhdr->version & 0x0000fc00) >> 10,
 498                        (fwhdr->version & 0x000003e0) >> 5,
 499                        (fwhdr->version & 0x0000001f),
 500                        (fwhdr->version & 0xffff0000) >> 16
 501                        );
 502
 503                if (version == fwhdr->version) {
 504                        /* No download, firmware already on board */
 505                        ret = 0;
 506                        goto out;
 507                }
 508
 509                if ((hdr->firmwaresize == 0) && (hdr->bslsize == 0)) {
 510                        if (updatebootloader) {
 511                                /* Get ready to upload the bootloader */
 512                                bootloadersize = (boothdr->firmwaresize +
 513                                        boothdr->bslsize) * 16 +
 514                                        sizeof(struct fw_header);
 515
 516                                bootloaderoffset = (u8 *)(fw->data +
 517                                        sizeof(struct fw_header));
 518
 519                                dprintk(DBGLVL_FW, "bootloader d/l starts.\n");
 520                                printk(KERN_INFO "%s() FirmwareSize = 0x%x\n",
 521                                        __func__, boothdr->firmwaresize);
 522                                printk(KERN_INFO "%s() BSLSize = 0x%x\n",
 523                                        __func__, boothdr->bslsize);
 524                                printk(KERN_INFO "%s() Reserved = 0x%x\n",
 525                                        __func__, boothdr->reserved);
 526                                printk(KERN_INFO "%s() Version = 0x%x\n",
 527                                        __func__, boothdr->version);
 528                                ret = saa7164_downloadimage(
 529                                        dev,
 530                                        bootloaderoffset,
 531                                        bootloadersize,
 532                                        SAA_DOWNLOAD_FLAGS,
 533                                        dev->bmmio + SAA_DEVICE_DOWNLOAD_OFFSET,
 534                                        SAA_DEVICE_BUFFERBLOCKSIZE);
 535                                if (ret < 0) {
 536                                        printk(KERN_ERR
 537                                                "bootloader d/l has failed\n");
 538                                        goto out;
 539                                }
 540                                dprintk(DBGLVL_FW,
 541                                        "bootloader download complete.\n");
 542
 543                        }
 544
 545                        printk(KERN_ERR "starting firmware download(2)\n");
 546                        bootloadersize = (boothdr->firmwaresize +
 547                                boothdr->bslsize) * 16 +
 548                                sizeof(struct fw_header);
 549
 550                        bootloaderoffset =
 551                                (u8 *)(fw->data + sizeof(struct fw_header));
 552
 553                        fwloaderoffset = bootloaderoffset + bootloadersize;
 554
 555                        /* TODO: fix this bounds overrun here with old f/ws */
 556                        fwloadersize = (fwhdr->firmwaresize + fwhdr->bslsize) *
 557                                16 + sizeof(struct fw_header);
 558
 559                        ret = saa7164_downloadimage(
 560                                dev,
 561                                fwloaderoffset,
 562                                fwloadersize,
 563                                SAA_DEVICE_2ND_DOWNLOADFLAG_OFFSET,
 564                                dev->bmmio + SAA_DEVICE_2ND_DOWNLOAD_OFFSET,
 565                                SAA_DEVICE_2ND_BUFFERBLOCKSIZE);
 566                        if (ret < 0) {
 567                                printk(KERN_ERR "firmware download failed\n");
 568                                goto out;
 569                        }
 570                        printk(KERN_ERR "firmware download complete.\n");
 571
 572                } else {
 573
 574                        /* No bootloader update reqd, download firmware only */
 575                        printk(KERN_ERR "starting firmware download(3)\n");
 576
 577                        ret = saa7164_downloadimage(
 578                                dev,
 579                                (u8 *)fw->data,
 580                                fw->size,
 581                                SAA_DOWNLOAD_FLAGS,
 582                                dev->bmmio + SAA_DEVICE_DOWNLOAD_OFFSET,
 583                                SAA_DEVICE_BUFFERBLOCKSIZE);
 584                        if (ret < 0) {
 585                                printk(KERN_ERR "firmware download failed\n");
 586                                goto out;
 587                        }
 588                        printk(KERN_ERR "firmware download complete.\n");
 589                }
 590        }
 591
 592        dev->firmwareloaded = 1;
 593        ret = 0;
 594
 595out:
 596        release_firmware(fw);
 597        return ret;
 598}
 599