drivers/gpu/drm/i915/i915_sysfs.c

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Ben Widawsky <ben@bwidawsk.net>
  25  *
  26  */
  27
  28 #include <linux/device.h>
  29 #include <linux/module.h>
  30 #include <linux/stat.h>
  31 #include <linux/sysfs.h>
  32 #include "intel_drv.h"
  33 #include "i915_drv.h"
  34
  35 #ifdef CONFIG_PM
  36 static u32 calc_residency(struct drm_device *dev, const u32 reg)
  37 {
  38         struct drm_i915_private *dev_priv = dev->dev_private;
  39         u64 raw_time; /* 32b value may overflow during fixed point math */
  40         u64 units = 128ULL, div = 100000ULL, bias = 100ULL;
  41
  42         if (!intel_enable_rc6(dev))
  43                 return 0;
  44
  45         /* On VLV, residency time is in CZ units rather than 1.28us */
  46         if (IS_VALLEYVIEW(dev)) {
  47                 u32 clkctl2;
  48
  49                 clkctl2 = I915_READ(VLV_CLK_CTL2) >>
  50                         CLK_CTL2_CZCOUNT_30NS_SHIFT;
  51                 if (!clkctl2) {
  52                         WARN(!clkctl2, "bogus CZ count value");
  53                         return 0;
  54                 }
  55                 units = DIV_ROUND_UP_ULL(30ULL * bias, (u64)clkctl2);
  56                 if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH)
  57                         units <<= 8;
  58
  59                 div = 1000000ULL * bias;
  60         }
  61
  62         raw_time = I915_READ(reg) * units;
  63         return DIV_ROUND_UP_ULL(raw_time, div);
  64 }
  65
  66 static ssize_t
  67 show_rc6_mask(struct device *kdev, struct device_attribute *attr, char *buf)
  68 {
  69         struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev);
  70         return snprintf(buf, PAGE_SIZE, "%x\n", intel_enable_rc6(dminor->dev));
  71 }
  72
  73 static ssize_t
  74 show_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf)
  75 {
  76         struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev);
  77         u32 rc6_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6);
  78         return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency);
  79 }
  80
  81 static ssize_t
  82 show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf)
  83 {
  84         struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev);
  85         u32 rc6p_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6p);
  86         if (IS_VALLEYVIEW(dminor->dev))
  87                 rc6p_residency = 0;
  88         return snprintf(buf, PAGE_SIZE, "%u\n", rc6p_residency);
  89 }
  90
  91 static ssize_t
  92 show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf)
  93 {
  94         struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev);
  95         u32 rc6pp_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6pp);
  96         if (IS_VALLEYVIEW(dminor->dev))
  97                 rc6pp_residency = 0;
  98         return snprintf(buf, PAGE_SIZE, "%u\n", rc6pp_residency);
  99 }
 100
 101 static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL);
 102 static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL);
 103 static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL);
 104 static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL);
 105
 106 static struct attribute *rc6_attrs[] = {
 107         &dev_attr_rc6_enable.attr,
 108         &dev_attr_rc6_residency_ms.attr,
 109         &dev_attr_rc6p_residency_ms.attr,
 110         &dev_attr_rc6pp_residency_ms.attr,
 111         NULL
 112 };
 113
 114 static struct attribute_group rc6_attr_group = {
 115         .name = power_group_name,
 116         .attrs =  rc6_attrs
 117 };
 118 #endif
 119
 120 static int l3_access_valid(struct drm_device *dev, loff_t offset)
 121 {
 122         if (!HAS_L3_DPF(dev))
 123                 return -EPERM;
 124
 125         if (offset % 4 != 0)
 126                 return -EINVAL;
 127
 128         if (offset >= GEN7_L3LOG_SIZE)
 129                 return -ENXIO;
 130
 131         return 0;
 132 }
 133
 134 static ssize_t
 135 i915_l3_read(struct file *filp, struct kobject *kobj,
 136              struct bin_attribute *attr, char *buf,
 137              loff_t offset, size_t count)
 138 {
 139         struct device *dev = container_of(kobj, struct device, kobj);
 140         struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
 141         struct drm_device *drm_dev = dminor->dev;
 142         struct drm_i915_private *dev_priv = drm_dev->dev_private;
 143         int slice = (int)(uintptr_t)attr->private;
 144         int ret;
 145
 146         count = round_down(count, 4);
 147
 148         ret = l3_access_valid(drm_dev, offset);
 149         if (ret)
 150                 return ret;
 151
 152         count = min_t(size_t, GEN7_L3LOG_SIZE - offset, count);
 153
 154         ret = i915_mutex_lock_interruptible(drm_dev);
 155         if (ret)
 156                 return ret;
 157
 158         if (dev_priv->l3_parity.remap_info[slice])
 159                 memcpy(buf,
 160                        dev_priv->l3_parity.remap_info[slice] + (offset/4),
 161                        count);
 162         else
 163                 memset(buf, 0, count);
 164
 165         mutex_unlock(&drm_dev->struct_mutex);
 166
 167         return count;
 168 }
 169
 170 static ssize_t
 171 i915_l3_write(struct file *filp, struct kobject *kobj,
 172               struct bin_attribute *attr, char *buf,
 173               loff_t offset, size_t count)
 174 {
 175         struct device *dev = container_of(kobj, struct device, kobj);
 176         struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev);
 177         struct drm_device *drm_dev = dminor->dev;
 178         struct drm_i915_private *dev_priv = drm_dev->dev_private;
 179         struct i915_hw_context *ctx;
 180         u32 *temp = NULL; /* Just here to make handling failures easy */
 181         int slice = (int)(uintptr_t)attr->private;
 182         int ret;
 183
 184         ret = l3_access_valid(drm_dev, offset);
 185         if (ret)
 186                 return ret;
 187
 188         if (dev_priv->hw_contexts_disabled)
 189                 return -ENXIO;
 190
 191         ret = i915_mutex_lock_interruptible(drm_dev);
 192         if (ret)
 193                 return ret;
 194
 195         if (!dev_priv->l3_parity.remap_info[slice]) {
 196                 temp = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL);
 197                 if (!temp) {
 198                         mutex_unlock(&drm_dev->struct_mutex);
 199                         return -ENOMEM;
 200                 }
 201         }
 202
 203         ret = i915_gpu_idle(drm_dev);
 204         if (ret) {
 205                 kfree(temp);
 206                 mutex_unlock(&drm_dev->struct_mutex);
 207                 return ret;
 208         }
 209
 210         /* TODO: Ideally we really want a GPU reset here to make sure errors
 211          * aren't propagated. Since I cannot find a stable way to reset the GPU
 212          * at this point it is left as a TODO.
 213         */
 214         if (temp)
 215                 dev_priv->l3_parity.remap_info[slice] = temp;
 216
 217         memcpy(dev_priv->l3_parity.remap_info[slice] + (offset/4), buf, count);
 218
 219         /* NB: We defer the remapping until we switch to the context */
 220         list_for_each_entry(ctx, &dev_priv->context_list, link)
 221                 ctx->remap_slice |= (1<<slice);
 222
 223         mutex_unlock(&drm_dev->struct_mutex);
 224
 225         return count;
 226 }
 227
 228 static struct bin_attribute dpf_attrs = {
 229         .attr = {.name = "l3_parity", .mode = (S_IRUSR | S_IWUSR)},
 230         .size = GEN7_L3LOG_SIZE,
 231         .read = i915_l3_read,
 232         .write = i915_l3_write,
 233         .mmap = NULL,
 234         .private = (void *)0
 235 };
 236
 237 static struct bin_attribute dpf_attrs_1 = {
 238         .attr = {.name = "l3_parity_slice_1", .mode = (S_IRUSR | S_IWUSR)},
 239         .size = GEN7_L3LOG_SIZE,
 240         .read = i915_l3_read,
 241         .write = i915_l3_write,
 242         .mmap = NULL,
 243         .private = (void *)1
 244 };
 245
 246 static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
 247                                     struct device_attribute *attr, char *buf)
 248 {
 249         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 250         struct drm_device *dev = minor->dev;
 251         struct drm_i915_private *dev_priv = dev->dev_private;
 252         int ret;
 253
 254         mutex_lock(&dev_priv->rps.hw_lock);
 255         if (IS_VALLEYVIEW(dev_priv->dev)) {
 256                 u32 freq;
 257                 freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
 258                 ret = vlv_gpu_freq(dev_priv->mem_freq, (freq >> 8) & 0xff);
 259         } else {
 260                 ret = dev_priv->rps.cur_delay * GT_FREQUENCY_MULTIPLIER;
 261         }
 262         mutex_unlock(&dev_priv->rps.hw_lock);
 263
 264         return snprintf(buf, PAGE_SIZE, "%d\n", ret);
 265 }
 266
 267 static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev,
 268                                      struct device_attribute *attr, char *buf)
 269 {
 270         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 271         struct drm_device *dev = minor->dev;
 272         struct drm_i915_private *dev_priv = dev->dev_private;
 273
 274         return snprintf(buf, PAGE_SIZE, "%d\n",
 275                         vlv_gpu_freq(dev_priv->mem_freq,
 276                                      dev_priv->rps.rpe_delay));
 277 }
 278
 279 static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
 280 {
 281         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 282         struct drm_device *dev = minor->dev;
 283         struct drm_i915_private *dev_priv = dev->dev_private;
 284         int ret;
 285
 286         mutex_lock(&dev_priv->rps.hw_lock);
 287         if (IS_VALLEYVIEW(dev_priv->dev))
 288                 ret = vlv_gpu_freq(dev_priv->mem_freq, dev_priv->rps.max_delay);
 289         else
 290                 ret = dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER;
 291         mutex_unlock(&dev_priv->rps.hw_lock);
 292
 293         return snprintf(buf, PAGE_SIZE, "%d\n", ret);
 294 }
 295
 296 static ssize_t gt_max_freq_mhz_store(struct device *kdev,
 297                                      struct device_attribute *attr,
 298                                      const char *buf, size_t count)
 299 {
 300         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 301         struct drm_device *dev = minor->dev;
 302         struct drm_i915_private *dev_priv = dev->dev_private;
 303         u32 val, rp_state_cap, hw_max, hw_min, non_oc_max;
 304         ssize_t ret;
 305
 306         ret = kstrtou32(buf, 0, &val);
 307         if (ret)
 308                 return ret;
 309
 310         mutex_lock(&dev_priv->rps.hw_lock);
 311
 312         if (IS_VALLEYVIEW(dev_priv->dev)) {
 313                 val = vlv_freq_opcode(dev_priv->mem_freq, val);
 314
 315                 hw_max = valleyview_rps_max_freq(dev_priv);
 316                 hw_min = valleyview_rps_min_freq(dev_priv);
 317                 non_oc_max = hw_max;
 318         } else {
 319                 val /= GT_FREQUENCY_MULTIPLIER;
 320
 321                 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 322                 hw_max = dev_priv->rps.hw_max;
 323                 non_oc_max = (rp_state_cap & 0xff);
 324                 hw_min = ((rp_state_cap & 0xff0000) >> 16);
 325         }
 326
 327         if (val < hw_min || val > hw_max ||
 328             val < dev_priv->rps.min_delay) {
 329                 mutex_unlock(&dev_priv->rps.hw_lock);
 330                 return -EINVAL;
 331         }
 332
 333         if (val > non_oc_max)
 334                 DRM_DEBUG("User requested overclocking to %d\n",
 335                           val * GT_FREQUENCY_MULTIPLIER);
 336
 337         if (dev_priv->rps.cur_delay > val) {
 338                 if (IS_VALLEYVIEW(dev_priv->dev))
 339                         valleyview_set_rps(dev_priv->dev, val);
 340                 else
 341                         gen6_set_rps(dev_priv->dev, val);
 342         }
 343
 344         dev_priv->rps.max_delay = val;
 345
 346         mutex_unlock(&dev_priv->rps.hw_lock);
 347
 348         return count;
 349 }
 350
 351 static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
 352 {
 353         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 354         struct drm_device *dev = minor->dev;
 355         struct drm_i915_private *dev_priv = dev->dev_private;
 356         int ret;
 357
 358         mutex_lock(&dev_priv->rps.hw_lock);
 359         if (IS_VALLEYVIEW(dev_priv->dev))
 360                 ret = vlv_gpu_freq(dev_priv->mem_freq, dev_priv->rps.min_delay);
 361         else
 362                 ret = dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER;
 363         mutex_unlock(&dev_priv->rps.hw_lock);
 364
 365         return snprintf(buf, PAGE_SIZE, "%d\n", ret);
 366 }
 367
 368 static ssize_t gt_min_freq_mhz_store(struct device *kdev,
 369                                      struct device_attribute *attr,
 370                                      const char *buf, size_t count)
 371 {
 372         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 373         struct drm_device *dev = minor->dev;
 374         struct drm_i915_private *dev_priv = dev->dev_private;
 375         u32 val, rp_state_cap, hw_max, hw_min;
 376         ssize_t ret;
 377
 378         ret = kstrtou32(buf, 0, &val);
 379         if (ret)
 380                 return ret;
 381
 382         mutex_lock(&dev_priv->rps.hw_lock);
 383
 384         if (IS_VALLEYVIEW(dev)) {
 385                 val = vlv_freq_opcode(dev_priv->mem_freq, val);
 386
 387                 hw_max = valleyview_rps_max_freq(dev_priv);
 388                 hw_min = valleyview_rps_min_freq(dev_priv);
 389         } else {
 390                 val /= GT_FREQUENCY_MULTIPLIER;
 391
 392                 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 393                 hw_max = dev_priv->rps.hw_max;
 394                 hw_min = ((rp_state_cap & 0xff0000) >> 16);
 395         }
 396
 397         if (val < hw_min || val > hw_max || val > dev_priv->rps.max_delay) {
 398                 mutex_unlock(&dev_priv->rps.hw_lock);
 399                 return -EINVAL;
 400         }
 401
 402         if (dev_priv->rps.cur_delay < val) {
 403                 if (IS_VALLEYVIEW(dev))
 404                         valleyview_set_rps(dev, val);
 405                 else
 406                         gen6_set_rps(dev_priv->dev, val);
 407         }
 408
 409         dev_priv->rps.min_delay = val;
 410
 411         mutex_unlock(&dev_priv->rps.hw_lock);
 412
 413         return count;
 414
 415 }
 416
 417 static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL);
 418 static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store);
 419 static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store);
 420
 421 static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show, NULL);
 422
 423 static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf);
 424 static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
 425 static DEVICE_ATTR(gt_RP1_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
 426 static DEVICE_ATTR(gt_RPn_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
 427
 428 /* For now we have a static number of RP states */
 429 static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
 430 {
 431         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 432         struct drm_device *dev = minor->dev;
 433         struct drm_i915_private *dev_priv = dev->dev_private;
 434         u32 val, rp_state_cap;
 435         ssize_t ret;
 436
 437         ret = mutex_lock_interruptible(&dev->struct_mutex);
 438         if (ret)
 439                 return ret;
 440         rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 441         mutex_unlock(&dev->struct_mutex);
 442
 443         if (attr == &dev_attr_gt_RP0_freq_mhz) {
 444                 val = ((rp_state_cap & 0x0000ff) >> 0) * GT_FREQUENCY_MULTIPLIER;
 445         } else if (attr == &dev_attr_gt_RP1_freq_mhz) {
 446                 val = ((rp_state_cap & 0x00ff00) >> 8) * GT_FREQUENCY_MULTIPLIER;
 447         } else if (attr == &dev_attr_gt_RPn_freq_mhz) {
 448                 val = ((rp_state_cap & 0xff0000) >> 16) * GT_FREQUENCY_MULTIPLIER;
 449         } else {
 450                 BUG();
 451         }
 452         return snprintf(buf, PAGE_SIZE, "%d\n", val);
 453 }
 454
 455 static const struct attribute *gen6_attrs[] = {
 456         &dev_attr_gt_cur_freq_mhz.attr,
 457         &dev_attr_gt_max_freq_mhz.attr,
 458         &dev_attr_gt_min_freq_mhz.attr,
 459         &dev_attr_gt_RP0_freq_mhz.attr,
 460         &dev_attr_gt_RP1_freq_mhz.attr,
 461         &dev_attr_gt_RPn_freq_mhz.attr,
 462         NULL,
 463 };
 464
 465 static const struct attribute *vlv_attrs[] = {
 466         &dev_attr_gt_cur_freq_mhz.attr,
 467         &dev_attr_gt_max_freq_mhz.attr,
 468         &dev_attr_gt_min_freq_mhz.attr,
 469         &dev_attr_vlv_rpe_freq_mhz.attr,
 470         NULL,
 471 };
 472
 473 static ssize_t error_state_read(struct file *filp, struct kobject *kobj,
 474                                 struct bin_attribute *attr, char *buf,
 475                                 loff_t off, size_t count)
 476 {
 477
 478         struct device *kdev = container_of(kobj, struct device, kobj);
 479         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 480         struct drm_device *dev = minor->dev;
 481         struct i915_error_state_file_priv error_priv;
 482         struct drm_i915_error_state_buf error_str;
 483         ssize_t ret_count = 0;
 484         int ret;
 485
 486         memset(&error_priv, 0, sizeof(error_priv));
 487
 488         ret = i915_error_state_buf_init(&error_str, count, off);
 489         if (ret)
 490                 return ret;
 491
 492         error_priv.dev = dev;
 493         i915_error_state_get(dev, &error_priv);
 494
 495         ret = i915_error_state_to_str(&error_str, &error_priv);
 496         if (ret)
 497                 goto out;
 498
 499         ret_count = count < error_str.bytes ? count : error_str.bytes;
 500
 501         memcpy(buf, error_str.buf, ret_count);
 502 out:
 503         i915_error_state_put(&error_priv);
 504         i915_error_state_buf_release(&error_str);
 505
 506         return ret ?: ret_count;
 507 }
 508
 509 static ssize_t error_state_write(struct file *file, struct kobject *kobj,
 510                                  struct bin_attribute *attr, char *buf,
 511                                  loff_t off, size_t count)
 512 {
 513         struct device *kdev = container_of(kobj, struct device, kobj);
 514         struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev);
 515         struct drm_device *dev = minor->dev;
 516         int ret;
 517
 518         DRM_DEBUG_DRIVER("Resetting error state\n");
 519
 520         ret = mutex_lock_interruptible(&dev->struct_mutex);
 521         if (ret)
 522                 return ret;
 523
 524         i915_destroy_error_state(dev);
 525         mutex_unlock(&dev->struct_mutex);
 526
 527         return count;
 528 }
 529
 530 static struct bin_attribute error_state_attr = {
 531         .attr.name = "error",
 532         .attr.mode = S_IRUSR | S_IWUSR,
 533         .size = 0,
 534         .read = error_state_read,
 535         .write = error_state_write,
 536 };
 537
 538 void i915_setup_sysfs(struct drm_device *dev)
 539 {
 540         int ret;
 541
 542 #ifdef CONFIG_PM
 543         if (INTEL_INFO(dev)->gen >= 6) {
 544                 ret = sysfs_merge_group(&dev->primary->kdev.kobj,
 545                                         &rc6_attr_group);
 546                 if (ret)
 547                         DRM_ERROR("RC6 residency sysfs setup failed\n");
 548         }
 549 #endif
 550         if (HAS_L3_DPF(dev)) {
 551                 ret = device_create_bin_file(&dev->primary->kdev, &dpf_attrs);
 552                 if (ret)
 553                         DRM_ERROR("l3 parity sysfs setup failed\n");
 554
 555                 if (NUM_L3_SLICES(dev) > 1) {
 556                         ret = device_create_bin_file(&dev->primary->kdev,
 557                                                      &dpf_attrs_1);
 558                         if (ret)
 559                                 DRM_ERROR("l3 parity slice 1 setup failed\n");
 560                 }
 561         }
 562
 563         ret = 0;
 564         if (IS_VALLEYVIEW(dev))
 565                 ret = sysfs_create_files(&dev->primary->kdev.kobj, vlv_attrs);
 566         else if (INTEL_INFO(dev)->gen >= 6)
 567                 ret = sysfs_create_files(&dev->primary->kdev.kobj, gen6_attrs);
 568         if (ret)
 569                 DRM_ERROR("RPS sysfs setup failed\n");
 570
 571         ret = sysfs_create_bin_file(&dev->primary->kdev.kobj,
 572                                     &error_state_attr);
 573         if (ret)
 574                 DRM_ERROR("error_state sysfs setup failed\n");
 575 }
 576
 577 void i915_teardown_sysfs(struct drm_device *dev)
 578 {
 579         sysfs_remove_bin_file(&dev->primary->kdev.kobj, &error_state_attr);
 580         if (IS_VALLEYVIEW(dev))
 581                 sysfs_remove_files(&dev->primary->kdev.kobj, vlv_attrs);
 582         else
 583                 sysfs_remove_files(&dev->primary->kdev.kobj, gen6_attrs);
 584         device_remove_bin_file(&dev->primary->kdev,  &dpf_attrs_1);
 585         device_remove_bin_file(&dev->primary->kdev,  &dpf_attrs);
 586 #ifdef CONFIG_PM
 587         sysfs_unmerge_group(&dev->primary->kdev.kobj, &rc6_attr_group);
 588 #endif
 589 }