drivers/gpu/drm/i915/intel_device_info.c

   1 /*
   2  * Copyright © 2016 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  */
  24
  25 #include <drm/drm_print.h>
  26 #include <drm/i915_pciids.h>
  27
  28 #include "display/intel_cdclk.h"
  29 #include "display/intel_de.h"
  30 #include "intel_device_info.h"
  31 #include "i915_drv.h"
  32
  33 #define PLATFORM_NAME(x) [INTEL_##x] = #x
  34 static const char * const platform_names[] = {
  35         PLATFORM_NAME(I830),
  36         PLATFORM_NAME(I845G),
  37         PLATFORM_NAME(I85X),
  38         PLATFORM_NAME(I865G),
  39         PLATFORM_NAME(I915G),
  40         PLATFORM_NAME(I915GM),
  41         PLATFORM_NAME(I945G),
  42         PLATFORM_NAME(I945GM),
  43         PLATFORM_NAME(G33),
  44         PLATFORM_NAME(PINEVIEW),
  45         PLATFORM_NAME(I965G),
  46         PLATFORM_NAME(I965GM),
  47         PLATFORM_NAME(G45),
  48         PLATFORM_NAME(GM45),
  49         PLATFORM_NAME(IRONLAKE),
  50         PLATFORM_NAME(SANDYBRIDGE),
  51         PLATFORM_NAME(IVYBRIDGE),
  52         PLATFORM_NAME(VALLEYVIEW),
  53         PLATFORM_NAME(HASWELL),
  54         PLATFORM_NAME(BROADWELL),
  55         PLATFORM_NAME(CHERRYVIEW),
  56         PLATFORM_NAME(SKYLAKE),
  57         PLATFORM_NAME(BROXTON),
  58         PLATFORM_NAME(KABYLAKE),
  59         PLATFORM_NAME(GEMINILAKE),
  60         PLATFORM_NAME(COFFEELAKE),
  61         PLATFORM_NAME(COMETLAKE),
  62         PLATFORM_NAME(CANNONLAKE),
  63         PLATFORM_NAME(ICELAKE),
  64         PLATFORM_NAME(ELKHARTLAKE),
  65         PLATFORM_NAME(JASPERLAKE),
  66         PLATFORM_NAME(TIGERLAKE),
  67         PLATFORM_NAME(ROCKETLAKE),
  68         PLATFORM_NAME(DG1),
  69         PLATFORM_NAME(ALDERLAKE_S),
  70 };
  71 #undef PLATFORM_NAME
  72
  73 const char *intel_platform_name(enum intel_platform platform)
  74 {
  75         BUILD_BUG_ON(ARRAY_SIZE(platform_names) != INTEL_MAX_PLATFORMS);
  76
  77         if (WARN_ON_ONCE(platform >= ARRAY_SIZE(platform_names) ||
  78                          platform_names[platform] == NULL))
  79                 return "<unknown>";
  80
  81         return platform_names[platform];
  82 }
  83
  84 static const char *iommu_name(void)
  85 {
  86         const char *msg = "n/a";
  87
  88 #ifdef CONFIG_INTEL_IOMMU
  89         msg = enableddisabled(intel_iommu_gfx_mapped);
  90 #endif
  91
  92         return msg;
  93 }
  94
  95 void intel_device_info_print_static(const struct intel_device_info *info,
  96                                     struct drm_printer *p)
  97 {
  98         drm_printf(p, "gen: %d\n", info->gen);
  99         drm_printf(p, "gt: %d\n", info->gt);
 100         drm_printf(p, "iommu: %s\n", iommu_name());
 101         drm_printf(p, "memory-regions: %x\n", info->memory_regions);
 102         drm_printf(p, "page-sizes: %x\n", info->page_sizes);
 103         drm_printf(p, "platform: %s\n", intel_platform_name(info->platform));
 104         drm_printf(p, "ppgtt-size: %d\n", info->ppgtt_size);
 105         drm_printf(p, "ppgtt-type: %d\n", info->ppgtt_type);
 106         drm_printf(p, "dma_mask_size: %u\n", info->dma_mask_size);
 107
 108 #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->name))
 109         DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG);
 110 #undef PRINT_FLAG
 111
 112 #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->display.name));
 113         DEV_INFO_DISPLAY_FOR_EACH_FLAG(PRINT_FLAG);
 114 #undef PRINT_FLAG
 115 }
 116
 117 void intel_device_info_print_runtime(const struct intel_runtime_info *info,
 118                                      struct drm_printer *p)
 119 {
 120         drm_printf(p, "rawclk rate: %u kHz\n", info->rawclk_freq);
 121 }
 122
 123 #undef INTEL_VGA_DEVICE
 124 #define INTEL_VGA_DEVICE(id, info) (id)
 125
 126 static const u16 subplatform_ult_ids[] = {
 127         INTEL_HSW_ULT_GT1_IDS(0),
 128         INTEL_HSW_ULT_GT2_IDS(0),
 129         INTEL_HSW_ULT_GT3_IDS(0),
 130         INTEL_BDW_ULT_GT1_IDS(0),
 131         INTEL_BDW_ULT_GT2_IDS(0),
 132         INTEL_BDW_ULT_GT3_IDS(0),
 133         INTEL_BDW_ULT_RSVD_IDS(0),
 134         INTEL_SKL_ULT_GT1_IDS(0),
 135         INTEL_SKL_ULT_GT2_IDS(0),
 136         INTEL_SKL_ULT_GT3_IDS(0),
 137         INTEL_KBL_ULT_GT1_IDS(0),
 138         INTEL_KBL_ULT_GT2_IDS(0),
 139         INTEL_KBL_ULT_GT3_IDS(0),
 140         INTEL_CFL_U_GT2_IDS(0),
 141         INTEL_CFL_U_GT3_IDS(0),
 142         INTEL_WHL_U_GT1_IDS(0),
 143         INTEL_WHL_U_GT2_IDS(0),
 144         INTEL_WHL_U_GT3_IDS(0),
 145         INTEL_CML_U_GT1_IDS(0),
 146         INTEL_CML_U_GT2_IDS(0),
 147 };
 148
 149 static const u16 subplatform_ulx_ids[] = {
 150         INTEL_HSW_ULX_GT1_IDS(0),
 151         INTEL_HSW_ULX_GT2_IDS(0),
 152         INTEL_BDW_ULX_GT1_IDS(0),
 153         INTEL_BDW_ULX_GT2_IDS(0),
 154         INTEL_BDW_ULX_GT3_IDS(0),
 155         INTEL_BDW_ULX_RSVD_IDS(0),
 156         INTEL_SKL_ULX_GT1_IDS(0),
 157         INTEL_SKL_ULX_GT2_IDS(0),
 158         INTEL_KBL_ULX_GT1_IDS(0),
 159         INTEL_KBL_ULX_GT2_IDS(0),
 160         INTEL_AML_KBL_GT2_IDS(0),
 161         INTEL_AML_CFL_GT2_IDS(0),
 162 };
 163
 164 static const u16 subplatform_portf_ids[] = {
 165         INTEL_CNL_PORT_F_IDS(0),
 166         INTEL_ICL_PORT_F_IDS(0),
 167 };
 168
 169 static bool find_devid(u16 id, const u16 *p, unsigned int num)
 170 {
 171         for (; num; num--, p++) {
 172                 if (*p == id)
 173                         return true;
 174         }
 175
 176         return false;
 177 }
 178
 179 void intel_device_info_subplatform_init(struct drm_i915_private *i915)
 180 {
 181         const struct intel_device_info *info = INTEL_INFO(i915);
 182         const struct intel_runtime_info *rinfo = RUNTIME_INFO(i915);
 183         const unsigned int pi = __platform_mask_index(rinfo, info->platform);
 184         const unsigned int pb = __platform_mask_bit(rinfo, info->platform);
 185         u16 devid = INTEL_DEVID(i915);
 186         u32 mask = 0;
 187
 188         /* Make sure IS_<platform> checks are working. */
 189         RUNTIME_INFO(i915)->platform_mask[pi] = BIT(pb);
 190
 191         /* Find and mark subplatform bits based on the PCI device id. */
 192         if (find_devid(devid, subplatform_ult_ids,
 193                        ARRAY_SIZE(subplatform_ult_ids))) {
 194                 mask = BIT(INTEL_SUBPLATFORM_ULT);
 195         } else if (find_devid(devid, subplatform_ulx_ids,
 196                               ARRAY_SIZE(subplatform_ulx_ids))) {
 197                 mask = BIT(INTEL_SUBPLATFORM_ULX);
 198                 if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
 199                         /* ULX machines are also considered ULT. */
 200                         mask |= BIT(INTEL_SUBPLATFORM_ULT);
 201                 }
 202         } else if (find_devid(devid, subplatform_portf_ids,
 203                               ARRAY_SIZE(subplatform_portf_ids))) {
 204                 mask = BIT(INTEL_SUBPLATFORM_PORTF);
 205         }
 206
 207         if (IS_TIGERLAKE(i915)) {
 208                 struct pci_dev *root, *pdev = to_pci_dev(i915->drm.dev);
 209
 210                 root = list_first_entry(&pdev->bus->devices, typeof(*root), bus_list);
 211
 212                 drm_WARN_ON(&i915->drm, mask);
 213                 drm_WARN_ON(&i915->drm, (root->device & TGL_ROOT_DEVICE_MASK) !=
 214                             TGL_ROOT_DEVICE_ID);
 215
 216                 switch (root->device & TGL_ROOT_DEVICE_SKU_MASK) {
 217                 case TGL_ROOT_DEVICE_SKU_ULX:
 218                         mask = BIT(INTEL_SUBPLATFORM_ULX);
 219                         break;
 220                 case TGL_ROOT_DEVICE_SKU_ULT:
 221                         mask = BIT(INTEL_SUBPLATFORM_ULT);
 222                         break;
 223                 }
 224         }
 225
 226         GEM_BUG_ON(mask & ~INTEL_SUBPLATFORM_MASK);
 227
 228         RUNTIME_INFO(i915)->platform_mask[pi] |= mask;
 229 }
 230
 231 /**
 232  * intel_device_info_runtime_init - initialize runtime info
 233  * @dev_priv: the i915 device
 234  *
 235  * Determine various intel_device_info fields at runtime.
 236  *
 237  * Use it when either:
 238  *   - it's judged too laborious to fill n static structures with the limit
 239  *     when a simple if statement does the job,
 240  *   - run-time checks (eg read fuse/strap registers) are needed.
 241  *
 242  * This function needs to be called:
 243  *   - after the MMIO has been setup as we are reading registers,
 244  *   - after the PCH has been detected,
 245  *   - before the first usage of the fields it can tweak.
 246  */
 247 void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 248 {
 249         struct intel_device_info *info = mkwrite_device_info(dev_priv);
 250         struct intel_runtime_info *runtime = RUNTIME_INFO(dev_priv);
 251         enum pipe pipe;
 252
 253         /* Wa_14011765242: adl-s A0 */
 254         if (IS_ADLS_DISPLAY_STEP(dev_priv, STEP_A0, STEP_A0))
 255                 for_each_pipe(dev_priv, pipe)
 256                         runtime->num_scalers[pipe] = 0;
 257         else if (INTEL_GEN(dev_priv) >= 10) {
 258                 for_each_pipe(dev_priv, pipe)
 259                         runtime->num_scalers[pipe] = 2;
 260         } else if (IS_GEN(dev_priv, 9)) {
 261                 runtime->num_scalers[PIPE_A] = 2;
 262                 runtime->num_scalers[PIPE_B] = 2;
 263                 runtime->num_scalers[PIPE_C] = 1;
 264         }
 265
 266         BUILD_BUG_ON(BITS_PER_TYPE(intel_engine_mask_t) < I915_NUM_ENGINES);
 267
 268         if (HAS_D12_PLANE_MINIMIZATION(dev_priv))
 269                 for_each_pipe(dev_priv, pipe)
 270                         runtime->num_sprites[pipe] = 4;
 271         else if (INTEL_GEN(dev_priv) >= 11)
 272                 for_each_pipe(dev_priv, pipe)
 273                         runtime->num_sprites[pipe] = 6;
 274         else if (IS_GEN(dev_priv, 10) || IS_GEMINILAKE(dev_priv))
 275                 for_each_pipe(dev_priv, pipe)
 276                         runtime->num_sprites[pipe] = 3;
 277         else if (IS_BROXTON(dev_priv)) {
 278                 /*
 279                  * Skylake and Broxton currently don't expose the topmost plane as its
 280                  * use is exclusive with the legacy cursor and we only want to expose
 281                  * one of those, not both. Until we can safely expose the topmost plane
 282                  * as a DRM_PLANE_TYPE_CURSOR with all the features exposed/supported,
 283                  * we don't expose the topmost plane at all to prevent ABI breakage
 284                  * down the line.
 285                  */
 286
 287                 runtime->num_sprites[PIPE_A] = 2;
 288                 runtime->num_sprites[PIPE_B] = 2;
 289                 runtime->num_sprites[PIPE_C] = 1;
 290         } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 291                 for_each_pipe(dev_priv, pipe)
 292                         runtime->num_sprites[pipe] = 2;
 293         } else if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv)) {
 294                 for_each_pipe(dev_priv, pipe)
 295                         runtime->num_sprites[pipe] = 1;
 296         }
 297
 298         if (HAS_DISPLAY(dev_priv) && IS_GEN_RANGE(dev_priv, 7, 8) &&
 299             HAS_PCH_SPLIT(dev_priv)) {
 300                 u32 fuse_strap = intel_de_read(dev_priv, FUSE_STRAP);
 301                 u32 sfuse_strap = intel_de_read(dev_priv, SFUSE_STRAP);
 302
 303                 /*
 304                  * SFUSE_STRAP is supposed to have a bit signalling the display
 305                  * is fused off. Unfortunately it seems that, at least in
 306                  * certain cases, fused off display means that PCH display
 307                  * reads don't land anywhere. In that case, we read 0s.
 308                  *
 309                  * On CPT/PPT, we can detect this case as SFUSE_STRAP_FUSE_LOCK
 310                  * should be set when taking over after the firmware.
 311                  */
 312                 if (fuse_strap & ILK_INTERNAL_DISPLAY_DISABLE ||
 313                     sfuse_strap & SFUSE_STRAP_DISPLAY_DISABLED ||
 314                     (HAS_PCH_CPT(dev_priv) &&
 315                      !(sfuse_strap & SFUSE_STRAP_FUSE_LOCK))) {
 316                         drm_info(&dev_priv->drm,
 317                                  "Display fused off, disabling\n");
 318                         info->pipe_mask = 0;
 319                         info->cpu_transcoder_mask = 0;
 320                 } else if (fuse_strap & IVB_PIPE_C_DISABLE) {
 321                         drm_info(&dev_priv->drm, "PipeC fused off\n");
 322                         info->pipe_mask &= ~BIT(PIPE_C);
 323                         info->cpu_transcoder_mask &= ~BIT(TRANSCODER_C);
 324                 }
 325         } else if (HAS_DISPLAY(dev_priv) && INTEL_GEN(dev_priv) >= 9) {
 326                 u32 dfsm = intel_de_read(dev_priv, SKL_DFSM);
 327
 328                 if (dfsm & SKL_DFSM_PIPE_A_DISABLE) {
 329                         info->pipe_mask &= ~BIT(PIPE_A);
 330                         info->cpu_transcoder_mask &= ~BIT(TRANSCODER_A);
 331                 }
 332                 if (dfsm & SKL_DFSM_PIPE_B_DISABLE) {
 333                         info->pipe_mask &= ~BIT(PIPE_B);
 334                         info->cpu_transcoder_mask &= ~BIT(TRANSCODER_B);
 335                 }
 336                 if (dfsm & SKL_DFSM_PIPE_C_DISABLE) {
 337                         info->pipe_mask &= ~BIT(PIPE_C);
 338                         info->cpu_transcoder_mask &= ~BIT(TRANSCODER_C);
 339                 }
 340                 if (INTEL_GEN(dev_priv) >= 12 &&
 341                     (dfsm & TGL_DFSM_PIPE_D_DISABLE)) {
 342                         info->pipe_mask &= ~BIT(PIPE_D);
 343                         info->cpu_transcoder_mask &= ~BIT(TRANSCODER_D);
 344                 }
 345
 346                 if (dfsm & SKL_DFSM_DISPLAY_HDCP_DISABLE)
 347                         info->display.has_hdcp = 0;
 348
 349                 if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE)
 350                         info->display.has_fbc = 0;
 351
 352                 if (INTEL_GEN(dev_priv) >= 11 && (dfsm & ICL_DFSM_DMC_DISABLE))
 353                         info->display.has_csr = 0;
 354
 355                 if (INTEL_GEN(dev_priv) >= 10 &&
 356                     (dfsm & CNL_DFSM_DISPLAY_DSC_DISABLE))
 357                         info->display.has_dsc = 0;
 358         }
 359
 360         if (IS_GEN(dev_priv, 6) && intel_vtd_active()) {
 361                 drm_info(&dev_priv->drm,
 362                          "Disabling ppGTT for VT-d support\n");
 363                 info->ppgtt_type = INTEL_PPGTT_NONE;
 364         }
 365
 366         runtime->rawclk_freq = intel_read_rawclk(dev_priv);
 367         drm_dbg(&dev_priv->drm, "rawclk rate: %d kHz\n", runtime->rawclk_freq);
 368
 369         if (!HAS_DISPLAY(dev_priv)) {
 370                 dev_priv->drm.driver_features &= ~(DRIVER_MODESET |
 371                                                    DRIVER_ATOMIC);
 372                 memset(&info->display, 0, sizeof(info->display));
 373                 memset(runtime->num_sprites, 0, sizeof(runtime->num_sprites));
 374                 memset(runtime->num_scalers, 0, sizeof(runtime->num_scalers));
 375         }
 376 }
 377
 378 void intel_driver_caps_print(const struct intel_driver_caps *caps,
 379                              struct drm_printer *p)
 380 {
 381         drm_printf(p, "Has logical contexts? %s\n",
 382                    yesno(caps->has_logical_contexts));
 383         drm_printf(p, "scheduler: %x\n", caps->scheduler);
 384 }