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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