tree: git://anongit.freedesktop.org/drm-intel for-linux-next head: faf654864b25f4ca4efd416145d37b794c0b805f commit: faf654864b25f4ca4efd416145d37b794c0b805f [2/2] drm/i915: Unify uC variable types to avoid flooding checkpatch.pl config: i386-randconfig-x003-201740 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout faf654864b25f4ca4efd416145d37b794c0b805f # save the attached .config to linux build tree make ARCH=i386

All errors (new ones prefixed by >>):

drivers/gpu//drm/i915/i915_guc_submission.c: In function 'guc_stage_desc_init':

...

drivers/gpu//drm/i915/i915_guc_submission.c:391:25: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]

desc->db_trigger_cpu = (u64)__get_doorbell(client); ^ drivers/gpu//drm/i915/i915_guc_submission.c:397:23: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] desc->desc_private = (u64)client; ^ cc1: all warnings being treated as errors

vim +391 drivers/gpu//drm/i915/i915_guc_submission.c

313 314 /* 315 * Initialise/clear the stage descriptor shared with the GuC firmware. 316 * 317 * This descriptor tells the GuC where (in GGTT space) to find the important 318 * data structures relating to this client (doorbell, process descriptor, 319 * write queue, etc). 320 */ 321 static void guc_stage_desc_init(struct intel_guc *guc, 322 struct i915_guc_client *client) 323 { 324 struct drm_i915_private *dev_priv = guc_to_i915(guc); 325 struct intel_engine_cs *engine; 326 struct i915_gem_context *ctx = client->owner; 327 struct guc_stage_desc *desc; 328 unsigned int tmp; 329 u32 gfx_addr; 330 331 desc = __get_stage_desc(client); 332 memset(desc, 0, sizeof(*desc)); 333 334 desc->attribute = GUC_STAGE_DESC_ATTR_ACTIVE | GUC_STAGE_DESC_ATTR_KERNEL; 335 desc->stage_id = client->stage_id; 336 desc->priority = client->priority; 337 desc->db_id = client->doorbell_id; 338 339 for_each_engine_masked(engine, dev_priv, client->engines, tmp) { 340 struct intel_context *ce = &ctx->engine[engine->id]; 341 u32 guc_engine_id = engine->guc_id; 342 struct guc_execlist_context *lrc = &desc->lrc[guc_engine_id]; 343 344 /* TODO: We have a design issue to be solved here. Only when we 345 * receive the first batch, we know which engine is used by the 346 * user. But here GuC expects the lrc and ring to be pinned. It 347 * is not an issue for default context, which is the only one 348 * for now who owns a GuC client. But for future owner of GuC 349 * client, need to make sure lrc is pinned prior to enter here. 350 */ 351 if (!ce->state) 352 break; /* XXX: continue? */ 353 354 /* 355 * XXX: When this is a GUC_STAGE_DESC_ATTR_KERNEL client (proxy 356 * submission or, in other words, not using a direct submission 357 * model) the KMD's LRCA is not used for any work submission. 358 * Instead, the GuC uses the LRCA of the user mode context (see 359 * guc_wq_item_append below). 360 */ 361 lrc->context_desc = lower_32_bits(ce->lrc_desc); 362 363 /* The state page is after PPHWSP */ 364 lrc->ring_lrca = 365 guc_ggtt_offset(ce->state) + LRC_STATE_PN * PAGE_SIZE; 366 367 /* XXX: In direct submission, the GuC wants the HW context id 368 * here. In proxy submission, it wants the stage id */ 369 lrc->context_id = (client->stage_id << GUC_ELC_CTXID_OFFSET) | 370 (guc_engine_id << GUC_ELC_ENGINE_OFFSET); 371 372 lrc->ring_begin = guc_ggtt_offset(ce->ring->vma); 373 lrc->ring_end = lrc->ring_begin + ce->ring->size - 1; 374 lrc->ring_next_free_location = lrc->ring_begin; 375 lrc->ring_current_tail_pointer_value = 0; 376 377 desc->engines_used |= (1 << guc_engine_id); 378 } 379 380 DRM_DEBUG_DRIVER("Host engines 0x%x => GuC engines used 0x%x\n", 381 client->engines, desc->engines_used); 382 WARN_ON(desc->engines_used == 0); 383 384 /* 385 * The doorbell, process descriptor, and workqueue are all parts 386 * of the client object, which the GuC will reference via the GGTT 387 */ 388 gfx_addr = guc_ggtt_offset(client->vma); 389 desc->db_trigger_phy = sg_dma_address(client->vma->pages->sgl) + 390 client->doorbell_offset;

391 desc->db_trigger_cpu = (u64)__get_doorbell(client);

392 desc->db_trigger_uk = gfx_addr + client->doorbell_offset; 393 desc->process_desc = gfx_addr + client->proc_desc_offset; 394 desc->wq_addr = gfx_addr + GUC_DB_SIZE; 395 desc->wq_size = GUC_WQ_SIZE; 396 397 desc->desc_private = (u64)client; 398 } 399

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