drivers/staging/crystalhd/crystalhd_lnx.c

   1 /***************************************************************************
   2   BCM70010 Linux driver
   3   Copyright (c) 2005-2009, Broadcom Corporation.
   4
   5   This driver is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation, version 2 of the License.
   8
   9   This driver is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this driver.  If not, see <http://www.gnu.org/licenses/>.
  16 ***************************************************************************/
  17
  18 #include <linux/mutex.h>
  19 #include <linux/slab.h>
  20
  21 #include "crystalhd_lnx.h"
  22
  23 static DEFINE_MUTEX(chd_dec_mutex);
  24 static struct class *crystalhd_class;
  25
  26 static struct crystalhd_adp *g_adp_info;
  27
  28 static irqreturn_t chd_dec_isr(int irq, void *arg)
  29 {
  30         struct crystalhd_adp *adp = (struct crystalhd_adp *) arg;
  31         int rc = 0;
  32         if (adp)
  33                 rc = crystalhd_cmd_interrupt(&adp->cmds);
  34
  35         return IRQ_RETVAL(rc);
  36 }
  37
  38 static int chd_dec_enable_int(struct crystalhd_adp *adp)
  39 {
  40         int rc = 0;
  41
  42         if (!adp || !adp->pdev) {
  43                 BCMLOG_ERR("Invalid arg!!\n");
  44                 return -EINVAL;
  45         }
  46
  47         if (adp->pdev->msi_enabled)
  48                 adp->msi = 1;
  49         else
  50                 adp->msi = pci_enable_msi(adp->pdev);
  51
  52         rc = request_irq(adp->pdev->irq, chd_dec_isr, IRQF_SHARED,
  53                          adp->name, (void *)adp);
  54         if (rc) {
  55                 BCMLOG_ERR("Interrupt request failed..\n");
  56                 pci_disable_msi(adp->pdev);
  57         }
  58
  59         return rc;
  60 }
  61
  62 static int chd_dec_disable_int(struct crystalhd_adp *adp)
  63 {
  64         if (!adp || !adp->pdev) {
  65                 BCMLOG_ERR("Invalid arg!!\n");
  66                 return -EINVAL;
  67         }
  68
  69         free_irq(adp->pdev->irq, adp);
  70
  71         if (adp->msi)
  72                 pci_disable_msi(adp->pdev);
  73
  74         return 0;
  75 }
  76
  77 struct crystalhd_ioctl_data *chd_dec_alloc_iodata(struct crystalhd_adp *adp, bool isr)
  78 {
  79         unsigned long flags = 0;
  80         struct crystalhd_ioctl_data *temp;
  81
  82         if (!adp)
  83                 return NULL;
  84
  85         spin_lock_irqsave(&adp->lock, flags);
  86
  87         temp = adp->idata_free_head;
  88         if (temp) {
  89                 adp->idata_free_head = adp->idata_free_head->next;
  90                 memset(temp, 0, sizeof(*temp));
  91         }
  92
  93         spin_unlock_irqrestore(&adp->lock, flags);
  94         return temp;
  95 }
  96
  97 void chd_dec_free_iodata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *iodata,
  98                          bool isr)
  99 {
 100         unsigned long flags = 0;
 101
 102         if (!adp || !iodata)
 103                 return;
 104
 105         spin_lock_irqsave(&adp->lock, flags);
 106         iodata->next = adp->idata_free_head;
 107         adp->idata_free_head = iodata;
 108         spin_unlock_irqrestore(&adp->lock, flags);
 109 }
 110
 111 static inline int crystalhd_user_data(unsigned long ud, void *dr, int size, int set)
 112 {
 113         int rc;
 114
 115         if (!ud || !dr) {
 116                 BCMLOG_ERR("Invalid arg\n");
 117                 return -EINVAL;
 118         }
 119
 120         if (set)
 121                 rc = copy_to_user((void *)ud, dr, size);
 122         else
 123                 rc = copy_from_user(dr, (void *)ud, size);
 124
 125         if (rc) {
 126                 BCMLOG_ERR("Invalid args for command\n");
 127                 rc = -EFAULT;
 128         }
 129
 130         return rc;
 131 }
 132
 133 static int chd_dec_fetch_cdata(struct crystalhd_adp *adp, struct crystalhd_ioctl_data *io,
 134                                uint32_t m_sz, unsigned long ua)
 135 {
 136         unsigned long ua_off;
 137         int rc = 0;
 138
 139         if (!adp || !io || !ua || !m_sz) {
 140                 BCMLOG_ERR("Invalid Arg!!\n");
 141                 return -EINVAL;
 142         }
 143
 144         io->add_cdata = vmalloc(m_sz);
 145         if (!io->add_cdata) {
 146                 BCMLOG_ERR("kalloc fail for sz:%x\n", m_sz);
 147                 return -ENOMEM;
 148         }
 149
 150         io->add_cdata_sz = m_sz;
 151         ua_off = ua + sizeof(io->udata);
 152         rc = crystalhd_user_data(ua_off, io->add_cdata, io->add_cdata_sz, 0);
 153         if (rc) {
 154                 BCMLOG_ERR("failed to pull add_cdata sz:%x ua_off:%x\n",
 155                            io->add_cdata_sz, (unsigned int)ua_off);
 156                 kfree(io->add_cdata);
 157                 io->add_cdata = NULL;
 158                 return -ENODATA;
 159         }
 160
 161         return rc;
 162 }
 163
 164 static int chd_dec_release_cdata(struct crystalhd_adp *adp,
 165                                  struct crystalhd_ioctl_data *io, unsigned long ua)
 166 {
 167         unsigned long ua_off;
 168         int rc;
 169
 170         if (!adp || !io || !ua) {
 171                 BCMLOG_ERR("Invalid Arg!!\n");
 172                 return -EINVAL;
 173         }
 174
 175         if (io->cmd != BCM_IOC_FW_DOWNLOAD) {
 176                 ua_off = ua + sizeof(io->udata);
 177                 rc = crystalhd_user_data(ua_off, io->add_cdata,
 178                                         io->add_cdata_sz, 1);
 179                 if (rc) {
 180                         BCMLOG_ERR("failed to push add_cdata sz:%x ua_off:%x\n",
 181                                    io->add_cdata_sz, (unsigned int)ua_off);
 182                         return -ENODATA;
 183                 }
 184         }
 185
 186         if (io->add_cdata) {
 187                 vfree(io->add_cdata);
 188                 io->add_cdata = NULL;
 189         }
 190
 191         return 0;
 192 }
 193
 194 static int chd_dec_proc_user_data(struct crystalhd_adp *adp,
 195                                   struct crystalhd_ioctl_data *io,
 196                                   unsigned long ua, int set)
 197 {
 198         int rc;
 199         uint32_t m_sz = 0;
 200
 201         if (!adp || !io || !ua) {
 202                 BCMLOG_ERR("Invalid Arg!!\n");
 203                 return -EINVAL;
 204         }
 205
 206         rc = crystalhd_user_data(ua, &io->udata, sizeof(io->udata), set);
 207         if (rc) {
 208                 BCMLOG_ERR("failed to %s iodata\n", (set ? "set" : "get"));
 209                 return rc;
 210         }
 211
 212         switch (io->cmd) {
 213         case BCM_IOC_MEM_RD:
 214         case BCM_IOC_MEM_WR:
 215         case BCM_IOC_FW_DOWNLOAD:
 216                 m_sz = io->udata.u.devMem.NumDwords * 4;
 217                 if (set)
 218                         rc = chd_dec_release_cdata(adp, io, ua);
 219                 else
 220                         rc = chd_dec_fetch_cdata(adp, io, m_sz, ua);
 221                 break;
 222         default:
 223                 break;
 224         }
 225
 226         return rc;
 227 }
 228
 229 static int chd_dec_api_cmd(struct crystalhd_adp *adp, unsigned long ua,
 230                            uint32_t uid, uint32_t cmd, crystalhd_cmd_proc func)
 231 {
 232         int rc;
 233         struct crystalhd_ioctl_data *temp;
 234         enum BC_STATUS sts = BC_STS_SUCCESS;
 235
 236         temp = chd_dec_alloc_iodata(adp, 0);
 237         if (!temp) {
 238                 BCMLOG_ERR("Failed to get iodata..\n");
 239                 return -EINVAL;
 240         }
 241
 242         temp->u_id = uid;
 243         temp->cmd  = cmd;
 244
 245         rc = chd_dec_proc_user_data(adp, temp, ua, 0);
 246         if (!rc) {
 247                 sts = func(&adp->cmds, temp);
 248                 if (sts == BC_STS_PENDING)
 249                         sts = BC_STS_NOT_IMPL;
 250                 temp->udata.RetSts = sts;
 251                 rc = chd_dec_proc_user_data(adp, temp, ua, 1);
 252         }
 253
 254         if (temp) {
 255                 chd_dec_free_iodata(adp, temp, 0);
 256                 temp = NULL;
 257         }
 258
 259         return rc;
 260 }
 261
 262 /* API interfaces */
 263 static long chd_dec_ioctl(struct file *fd, unsigned int cmd, unsigned long ua)
 264 {
 265         struct crystalhd_adp *adp = chd_get_adp();
 266         crystalhd_cmd_proc cproc;
 267         struct crystalhd_user *uc;
 268         int ret;
 269
 270         if (!adp || !fd) {
 271                 BCMLOG_ERR("Invalid adp\n");
 272                 return -EINVAL;
 273         }
 274
 275         uc = fd->private_data;
 276         if (!uc) {
 277                 BCMLOG_ERR("Failed to get uc\n");
 278                 return -ENODATA;
 279         }
 280
 281         mutex_lock(&chd_dec_mutex);
 282         cproc = crystalhd_get_cmd_proc(&adp->cmds, cmd, uc);
 283         if (!cproc) {
 284                 BCMLOG_ERR("Unhandled command: %d\n", cmd);
 285                 mutex_unlock(&chd_dec_mutex);
 286                 return -EINVAL;
 287         }
 288
 289         ret = chd_dec_api_cmd(adp, ua, uc->uid, cmd, cproc);
 290         mutex_unlock(&chd_dec_mutex);
 291         return ret;
 292 }
 293
 294 static int chd_dec_open(struct inode *in, struct file *fd)
 295 {
 296         struct crystalhd_adp *adp = chd_get_adp();
 297         int rc = 0;
 298         enum BC_STATUS sts = BC_STS_SUCCESS;
 299         struct crystalhd_user *uc = NULL;
 300
 301         BCMLOG_ENTER;
 302         if (!adp) {
 303                 BCMLOG_ERR("Invalid adp\n");
 304                 return -EINVAL;
 305         }
 306
 307         if (adp->cfg_users >= BC_LINK_MAX_OPENS) {
 308                 BCMLOG(BCMLOG_INFO, "Already in use.%d\n", adp->cfg_users);
 309                 return -EBUSY;
 310         }
 311
 312         sts = crystalhd_user_open(&adp->cmds, &uc);
 313         if (sts != BC_STS_SUCCESS) {
 314                 BCMLOG_ERR("cmd_user_open - %d\n", sts);
 315                 rc = -EBUSY;
 316         }
 317
 318         adp->cfg_users++;
 319
 320         fd->private_data = uc;
 321
 322         return rc;
 323 }
 324
 325 static int chd_dec_close(struct inode *in, struct file *fd)
 326 {
 327         struct crystalhd_adp *adp = chd_get_adp();
 328         struct crystalhd_user *uc;
 329
 330         BCMLOG_ENTER;
 331         if (!adp) {
 332                 BCMLOG_ERR("Invalid adp\n");
 333                 return -EINVAL;
 334         }
 335
 336         uc = fd->private_data;
 337         if (!uc) {
 338                 BCMLOG_ERR("Failed to get uc\n");
 339                 return -ENODATA;
 340         }
 341
 342         crystalhd_user_close(&adp->cmds, uc);
 343
 344         adp->cfg_users--;
 345
 346         return 0;
 347 }
 348
 349 static const struct file_operations chd_dec_fops = {
 350         .owner   = THIS_MODULE,
 351         .unlocked_ioctl = chd_dec_ioctl,
 352         .open    = chd_dec_open,
 353         .release = chd_dec_close,
 354         .llseek = noop_llseek,
 355 };
 356
 357 static int __devinit chd_dec_init_chdev(struct crystalhd_adp *adp)
 358 {
 359         struct crystalhd_ioctl_data *temp;
 360         struct device *dev;
 361         int rc = -ENODEV, i = 0;
 362
 363         if (!adp)
 364                 goto fail;
 365
 366         adp->chd_dec_major = register_chrdev(0, CRYSTALHD_API_NAME,
 367                                              &chd_dec_fops);
 368         if (adp->chd_dec_major < 0) {
 369                 BCMLOG_ERR("Failed to create config dev\n");
 370                 rc = adp->chd_dec_major;
 371                 goto fail;
 372         }
 373
 374         /* register crystalhd class */
 375         crystalhd_class = class_create(THIS_MODULE, "crystalhd");
 376         if (IS_ERR(crystalhd_class)) {
 377                 BCMLOG_ERR("failed to create class\n");
 378                 goto fail;
 379         }
 380
 381         dev = device_create(crystalhd_class, NULL, MKDEV(adp->chd_dec_major, 0),
 382                             NULL, "crystalhd");
 383         if (IS_ERR(dev)) {
 384                 BCMLOG_ERR("failed to create device\n");
 385                 goto device_create_fail;
 386         }
 387
 388         rc = crystalhd_create_elem_pool(adp, BC_LINK_ELEM_POOL_SZ);
 389         if (rc) {
 390                 BCMLOG_ERR("failed to create device\n");
 391                 goto elem_pool_fail;
 392         }
 393
 394         /* Allocate general purpose ioctl pool. */
 395         for (i = 0; i < CHD_IODATA_POOL_SZ; i++) {
 396                 /* FIXME: jarod: why atomic? */
 397                 temp = kzalloc(sizeof(struct crystalhd_ioctl_data), GFP_ATOMIC);
 398                 if (!temp) {
 399                         BCMLOG_ERR("ioctl data pool kzalloc failed\n");
 400                         rc = -ENOMEM;
 401                         goto kzalloc_fail;
 402                 }
 403                 /* Add to global pool.. */
 404                 chd_dec_free_iodata(adp, temp, 0);
 405         }
 406
 407         return 0;
 408
 409 kzalloc_fail:
 410         crystalhd_delete_elem_pool(adp);
 411 elem_pool_fail:
 412         device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
 413 device_create_fail:
 414         class_destroy(crystalhd_class);
 415 fail:
 416         return rc;
 417 }
 418
 419 static void __devexit chd_dec_release_chdev(struct crystalhd_adp *adp)
 420 {
 421         struct crystalhd_ioctl_data *temp = NULL;
 422         if (!adp)
 423                 return;
 424
 425         if (adp->chd_dec_major > 0) {
 426                 /* unregister crystalhd class */
 427                 device_destroy(crystalhd_class, MKDEV(adp->chd_dec_major, 0));
 428                 unregister_chrdev(adp->chd_dec_major, CRYSTALHD_API_NAME);
 429                 BCMLOG(BCMLOG_INFO, "released api device - %d\n",
 430                        adp->chd_dec_major);
 431                 class_destroy(crystalhd_class);
 432         }
 433         adp->chd_dec_major = 0;
 434
 435         /* Clear iodata pool.. */
 436         do {
 437                 temp = chd_dec_alloc_iodata(adp, 0);
 438                 kfree(temp);
 439         } while (temp);
 440
 441         crystalhd_delete_elem_pool(adp);
 442 }
 443
 444 static int __devinit chd_pci_reserve_mem(struct crystalhd_adp *pinfo)
 445 {
 446         int rc;
 447         unsigned long bar2 = pci_resource_start(pinfo->pdev, 2);
 448         uint32_t mem_len   = pci_resource_len(pinfo->pdev, 2);
 449         unsigned long bar0 = pci_resource_start(pinfo->pdev, 0);
 450         uint32_t i2o_len   = pci_resource_len(pinfo->pdev, 0);
 451
 452         BCMLOG(BCMLOG_SSTEP, "bar2:0x%lx-0x%08x  bar0:0x%lx-0x%08x\n",
 453                bar2, mem_len, bar0, i2o_len);
 454
 455         rc = check_mem_region(bar2, mem_len);
 456         if (rc) {
 457                 BCMLOG_ERR("No valid mem region...\n");
 458                 return -ENOMEM;
 459         }
 460
 461         pinfo->addr = ioremap_nocache(bar2, mem_len);
 462         if (!pinfo->addr) {
 463                 BCMLOG_ERR("Failed to remap mem region...\n");
 464                 return -ENOMEM;
 465         }
 466
 467         pinfo->pci_mem_start = bar2;
 468         pinfo->pci_mem_len   = mem_len;
 469
 470         rc = check_mem_region(bar0, i2o_len);
 471         if (rc) {
 472                 BCMLOG_ERR("No valid mem region...\n");
 473                 return -ENOMEM;
 474         }
 475
 476         pinfo->i2o_addr = ioremap_nocache(bar0, i2o_len);
 477         if (!pinfo->i2o_addr) {
 478                 BCMLOG_ERR("Failed to remap mem region...\n");
 479                 return -ENOMEM;
 480         }
 481
 482         pinfo->pci_i2o_start = bar0;
 483         pinfo->pci_i2o_len   = i2o_len;
 484
 485         rc = pci_request_regions(pinfo->pdev, pinfo->name);
 486         if (rc < 0) {
 487                 BCMLOG_ERR("Region request failed: %d\n", rc);
 488                 return rc;
 489         }
 490
 491         BCMLOG(BCMLOG_SSTEP, "Mapped addr:0x%08lx  i2o_addr:0x%08lx\n",
 492                (unsigned long)pinfo->addr, (unsigned long)pinfo->i2o_addr);
 493
 494         return 0;
 495 }
 496
 497 static void __devexit chd_pci_release_mem(struct crystalhd_adp *pinfo)
 498 {
 499         if (!pinfo)
 500                 return;
 501
 502         if (pinfo->addr)
 503                 iounmap(pinfo->addr);
 504
 505         if (pinfo->i2o_addr)
 506                 iounmap(pinfo->i2o_addr);
 507
 508         pci_release_regions(pinfo->pdev);
 509 }
 510
 511
 512 static void __devexit chd_dec_pci_remove(struct pci_dev *pdev)
 513 {
 514         struct crystalhd_adp *pinfo;
 515         enum BC_STATUS sts = BC_STS_SUCCESS;
 516
 517         BCMLOG_ENTER;
 518
 519         pinfo = (struct crystalhd_adp *) pci_get_drvdata(pdev);
 520         if (!pinfo) {
 521                 BCMLOG_ERR("could not get adp\n");
 522                 return;
 523         }
 524
 525         sts = crystalhd_delete_cmd_context(&pinfo->cmds);
 526         if (sts != BC_STS_SUCCESS)
 527                 BCMLOG_ERR("cmd delete :%d\n", sts);
 528
 529         chd_dec_release_chdev(pinfo);
 530
 531         chd_dec_disable_int(pinfo);
 532
 533         chd_pci_release_mem(pinfo);
 534         pci_disable_device(pinfo->pdev);
 535
 536         kfree(pinfo);
 537         g_adp_info = NULL;
 538 }
 539
 540 static int __devinit chd_dec_pci_probe(struct pci_dev *pdev,
 541                              const struct pci_device_id *entry)
 542 {
 543         struct crystalhd_adp *pinfo;
 544         int rc;
 545         enum BC_STATUS sts = BC_STS_SUCCESS;
 546
 547         BCMLOG(BCMLOG_DBG, "PCI_INFO: Vendor:0x%04x Device:0x%04x "
 548                "s_vendor:0x%04x s_device: 0x%04x\n",
 549                pdev->vendor, pdev->device, pdev->subsystem_vendor,
 550                pdev->subsystem_device);
 551
 552         /* FIXME: jarod: why atomic? */
 553         pinfo = kzalloc(sizeof(struct crystalhd_adp), GFP_ATOMIC);
 554         if (!pinfo) {
 555                 BCMLOG_ERR("Failed to allocate memory\n");
 556                 return -ENOMEM;
 557         }
 558
 559         pinfo->pdev = pdev;
 560
 561         rc = pci_enable_device(pdev);
 562         if (rc) {
 563                 BCMLOG_ERR("Failed to enable PCI device\n");
 564                 return rc;
 565         }
 566
 567         snprintf(pinfo->name, 31, "crystalhd_pci_e:%d:%d:%d",
 568                  pdev->bus->number, PCI_SLOT(pdev->devfn),
 569                  PCI_FUNC(pdev->devfn));
 570
 571         rc = chd_pci_reserve_mem(pinfo);
 572         if (rc) {
 573                 BCMLOG_ERR("Failed to setup memory regions.\n");
 574                 pci_disable_device(pdev);
 575                 return -ENOMEM;
 576         }
 577
 578         pinfo->present  = 1;
 579         pinfo->drv_data = entry->driver_data;
 580
 581         /* Setup adapter level lock.. */
 582         spin_lock_init(&pinfo->lock);
 583
 584         /* setup api stuff.. */
 585         chd_dec_init_chdev(pinfo);
 586         rc = chd_dec_enable_int(pinfo);
 587         if (rc) {
 588                 BCMLOG_ERR("_enable_int err:%d\n", rc);
 589                 pci_disable_device(pdev);
 590                 return -ENODEV;
 591         }
 592
 593         /* Set dma mask... */
 594         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
 595                 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
 596                 pinfo->dmabits = 64;
 597         } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
 598                 pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 599                 pinfo->dmabits = 32;
 600         } else {
 601                 BCMLOG_ERR("Unabled to setup DMA %d\n", rc);
 602                 pci_disable_device(pdev);
 603                 return -ENODEV;
 604         }
 605
 606         sts = crystalhd_setup_cmd_context(&pinfo->cmds, pinfo);
 607         if (sts != BC_STS_SUCCESS) {
 608                 BCMLOG_ERR("cmd setup :%d\n", sts);
 609                 pci_disable_device(pdev);
 610                 return -ENODEV;
 611         }
 612
 613         pci_set_master(pdev);
 614
 615         pci_set_drvdata(pdev, pinfo);
 616
 617         g_adp_info = pinfo;
 618
 619         return 0;
 620 }
 621
 622 #ifdef CONFIG_PM
 623 int chd_dec_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 624 {
 625         struct crystalhd_adp *adp;
 626         struct crystalhd_ioctl_data *temp;
 627         enum BC_STATUS sts = BC_STS_SUCCESS;
 628
 629         adp = (struct crystalhd_adp *)pci_get_drvdata(pdev);
 630         if (!adp) {
 631                 BCMLOG_ERR("could not get adp\n");
 632                 return -ENODEV;
 633         }
 634
 635         temp = chd_dec_alloc_iodata(adp, false);
 636         if (!temp) {
 637                 BCMLOG_ERR("could not get ioctl data\n");
 638                 return -ENODEV;
 639         }
 640
 641         sts = crystalhd_suspend(&adp->cmds, temp);
 642         if (sts != BC_STS_SUCCESS) {
 643                 BCMLOG_ERR("BCM70012 Suspend %d\n", sts);
 644                 return -ENODEV;
 645         }
 646
 647         chd_dec_free_iodata(adp, temp, false);
 648         chd_dec_disable_int(adp);
 649         pci_save_state(pdev);
 650
 651         /* Disable IO/bus master/irq router */
 652         pci_disable_device(pdev);
 653         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 654         return 0;
 655 }
 656
 657 int chd_dec_pci_resume(struct pci_dev *pdev)
 658 {
 659         struct crystalhd_adp *adp;
 660         enum BC_STATUS sts = BC_STS_SUCCESS;
 661         int rc;
 662
 663         adp = (struct crystalhd_adp *)pci_get_drvdata(pdev);
 664         if (!adp) {
 665                 BCMLOG_ERR("could not get adp\n");
 666                 return -ENODEV;
 667         }
 668
 669         pci_set_power_state(pdev, PCI_D0);
 670         pci_restore_state(pdev);
 671
 672         /* device's irq possibly is changed, driver should take care */
 673         if (pci_enable_device(pdev)) {
 674                 BCMLOG_ERR("Failed to enable PCI device\n");
 675                 return 1;
 676         }
 677
 678         pci_set_master(pdev);
 679
 680         rc = chd_dec_enable_int(adp);
 681         if (rc) {
 682                 BCMLOG_ERR("_enable_int err:%d\n", rc);
 683                 pci_disable_device(pdev);
 684                 return -ENODEV;
 685         }
 686
 687         sts = crystalhd_resume(&adp->cmds);
 688         if (sts != BC_STS_SUCCESS) {
 689                 BCMLOG_ERR("BCM70012 Resume %d\n", sts);
 690                 pci_disable_device(pdev);
 691                 return -ENODEV;
 692         }
 693
 694         return 0;
 695 }
 696 #endif
 697
 698 static DEFINE_PCI_DEVICE_TABLE(chd_dec_pci_id_table) = {
 699         { PCI_VDEVICE(BROADCOM, 0x1612), 8 },
 700         { 0, },
 701 };
 702 MODULE_DEVICE_TABLE(pci, chd_dec_pci_id_table);
 703
 704 static struct pci_driver bc_chd_70012_driver = {
 705         .name     = "Broadcom 70012 Decoder",
 706         .probe    = chd_dec_pci_probe,
 707         .remove   = __devexit_p(chd_dec_pci_remove),
 708         .id_table = chd_dec_pci_id_table,
 709 #ifdef CONFIG_PM
 710         .suspend  = chd_dec_pci_suspend,
 711         .resume   = chd_dec_pci_resume
 712 #endif
 713 };
 714
 715 void chd_set_log_level(struct crystalhd_adp *adp, char *arg)
 716 {
 717         if ((!arg) || (strlen(arg) < 3))
 718                 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA;
 719         else if (!strncmp(arg, "sstep", 5))
 720                 g_linklog_level = BCMLOG_INFO | BCMLOG_DATA | BCMLOG_DBG |
 721                                   BCMLOG_SSTEP | BCMLOG_ERROR;
 722         else if (!strncmp(arg, "info", 4))
 723                 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO;
 724         else if (!strncmp(arg, "debug", 5))
 725                 g_linklog_level = BCMLOG_ERROR | BCMLOG_DATA | BCMLOG_INFO |
 726                                   BCMLOG_DBG;
 727         else if (!strncmp(arg, "pball", 5))
 728                 g_linklog_level = 0xFFFFFFFF & ~(BCMLOG_SPINLOCK);
 729         else if (!strncmp(arg, "silent", 6))
 730                 g_linklog_level = 0;
 731         else
 732                 g_linklog_level = 0;
 733 }
 734
 735 struct crystalhd_adp *chd_get_adp(void)
 736 {
 737         return g_adp_info;
 738 }
 739
 740 static int __init chd_dec_module_init(void)
 741 {
 742         int rc;
 743
 744         chd_set_log_level(NULL, "debug");
 745         BCMLOG(BCMLOG_DATA, "Loading crystalhd %d.%d.%d\n",
 746                crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
 747
 748         rc = pci_register_driver(&bc_chd_70012_driver);
 749
 750         if (rc < 0)
 751                 BCMLOG_ERR("Could not find any devices. err:%d\n", rc);
 752
 753         return rc;
 754 }
 755 module_init(chd_dec_module_init);
 756
 757 static void __exit chd_dec_module_cleanup(void)
 758 {
 759         BCMLOG(BCMLOG_DATA, "unloading crystalhd %d.%d.%d\n",
 760                crystalhd_kmod_major, crystalhd_kmod_minor, crystalhd_kmod_rev);
 761
 762         pci_unregister_driver(&bc_chd_70012_driver);
 763 }
 764 module_exit(chd_dec_module_cleanup);
 765
 766 MODULE_AUTHOR("Naren Sankar <nsankar@broadcom.com>");
 767 MODULE_AUTHOR("Prasad Bolisetty <prasadb@broadcom.com>");
 768 MODULE_DESCRIPTION(CRYSTAL_HD_NAME);
 769 MODULE_LICENSE("GPL");
 770 MODULE_ALIAS("bcm70012");