Add logical engine mapping. This is required for split-frame, as workloads need to be placed on engines in a logically contiguous manner. v2: (Daniel Vetter) - Add kernel doc for new fields v3: (Tvrtko) - Update comment for new logical_mask field v4: (John Harrison) - Update comment for new logical_mask field Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx> Reviewed-by: John Harrison <John.C.Harrison@xxxxxxxxx> --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 60 ++++++++++++++++--- drivers/gpu/drm/i915/gt/intel_engine_types.h | 7 +++ .../drm/i915/gt/intel_execlists_submission.c | 1 + drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 2 +- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 21 +------ 5 files changed, 62 insertions(+), 29 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 2ae57e4656a3..2eb798ad068b 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -290,7 +290,8 @@ static void nop_irq_handler(struct intel_engine_cs *engine, u16 iir) GEM_DEBUG_WARN_ON(iir); } -static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id) +static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id, + u8 logical_instance) { const struct engine_info *info = &intel_engines[id]; struct drm_i915_private *i915 = gt->i915; @@ -335,6 +336,7 @@ static int intel_engine_setup(struct intel_gt *gt, enum intel_engine_id id) engine->class = info->class; engine->instance = info->instance; + engine->logical_mask = BIT(logical_instance); __sprint_engine_name(engine); engine->props.heartbeat_interval_ms = @@ -588,6 +590,37 @@ static intel_engine_mask_t init_engine_mask(struct intel_gt *gt) return info->engine_mask; } +static void populate_logical_ids(struct intel_gt *gt, u8 *logical_ids, + u8 class, const u8 *map, u8 num_instances) +{ + int i, j; + u8 current_logical_id = 0; + + for (j = 0; j < num_instances; ++j) { + for (i = 0; i < ARRAY_SIZE(intel_engines); ++i) { + if (!HAS_ENGINE(gt, i) || + intel_engines[i].class != class) + continue; + + if (intel_engines[i].instance == map[j]) { + logical_ids[intel_engines[i].instance] = + current_logical_id++; + break; + } + } + } +} + +static void setup_logical_ids(struct intel_gt *gt, u8 *logical_ids, u8 class) +{ + int i; + u8 map[MAX_ENGINE_INSTANCE + 1]; + + for (i = 0; i < MAX_ENGINE_INSTANCE + 1; ++i) + map[i] = i; + populate_logical_ids(gt, logical_ids, class, map, ARRAY_SIZE(map)); +} + /** * intel_engines_init_mmio() - allocate and prepare the Engine Command Streamers * @gt: pointer to struct intel_gt @@ -599,7 +632,8 @@ int intel_engines_init_mmio(struct intel_gt *gt) struct drm_i915_private *i915 = gt->i915; const unsigned int engine_mask = init_engine_mask(gt); unsigned int mask = 0; - unsigned int i; + unsigned int i, class; + u8 logical_ids[MAX_ENGINE_INSTANCE + 1]; int err; drm_WARN_ON(&i915->drm, engine_mask == 0); @@ -609,15 +643,23 @@ int intel_engines_init_mmio(struct intel_gt *gt) if (i915_inject_probe_failure(i915)) return -ENODEV; - for (i = 0; i < ARRAY_SIZE(intel_engines); i++) { - if (!HAS_ENGINE(gt, i)) - continue; + for (class = 0; class < MAX_ENGINE_CLASS + 1; ++class) { + setup_logical_ids(gt, logical_ids, class); - err = intel_engine_setup(gt, i); - if (err) - goto cleanup; + for (i = 0; i < ARRAY_SIZE(intel_engines); ++i) { + u8 instance = intel_engines[i].instance; + + if (intel_engines[i].class != class || + !HAS_ENGINE(gt, i)) + continue; - mask |= BIT(i); + err = intel_engine_setup(gt, i, + logical_ids[instance]); + if (err) + goto cleanup; + + mask |= BIT(i); + } } /* diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 9167ce52487c..e0f773585c29 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -269,6 +269,13 @@ struct intel_engine_cs { unsigned int guc_id; intel_engine_mask_t mask; + /** + * @logical_mask: logical mask of engine, reported to user space via + * query IOCTL and used to communicate with the GuC in logical space. + * The logical instance of a physical engine can change based on product + * and fusing. + */ + intel_engine_mask_t logical_mask; u8 class; u8 instance; diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c index 73a79c2acd3a..43a74b216efb 100644 --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c @@ -3877,6 +3877,7 @@ execlists_create_virtual(struct intel_engine_cs **siblings, unsigned int count) ve->siblings[ve->num_siblings++] = sibling; ve->base.mask |= sibling->mask; + ve->base.logical_mask |= sibling->logical_mask; /* * All physical engines must be compatible for their emission diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c index 2c6ea64af7ec..621c893a009f 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c @@ -176,7 +176,7 @@ static void guc_mapping_table_init(struct intel_gt *gt, for_each_engine(engine, gt, id) { u8 guc_class = engine_class_to_guc_class(engine->class); - system_info->mapping_table[guc_class][engine->instance] = + system_info->mapping_table[guc_class][ilog2(engine->logical_mask)] = engine->instance; } } diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index 795cc071d05d..fd6594bc1b96 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -1423,23 +1423,6 @@ static int deregister_context(struct intel_context *ce, u32 guc_id) return __guc_action_deregister_context(guc, guc_id); } -static intel_engine_mask_t adjust_engine_mask(u8 class, intel_engine_mask_t mask) -{ - switch (class) { - case RENDER_CLASS: - return mask >> RCS0; - case VIDEO_ENHANCEMENT_CLASS: - return mask >> VECS0; - case VIDEO_DECODE_CLASS: - return mask >> VCS0; - case COPY_ENGINE_CLASS: - return mask >> BCS0; - default: - MISSING_CASE(class); - return 0; - } -} - static void guc_context_policy_init(struct intel_engine_cs *engine, struct guc_lrc_desc *desc) { @@ -1481,8 +1464,7 @@ static int guc_lrc_desc_pin(struct intel_context *ce, bool loop) desc = __get_lrc_desc(guc, desc_idx); desc->engine_class = engine_class_to_guc_class(engine->class); - desc->engine_submit_mask = adjust_engine_mask(engine->class, - engine->mask); + desc->engine_submit_mask = engine->logical_mask; desc->hw_context_desc = ce->lrc.lrca; desc->priority = ce->guc_state.prio; desc->context_flags = CONTEXT_REGISTRATION_FLAG_KMD; @@ -3271,6 +3253,7 @@ guc_create_virtual(struct intel_engine_cs **siblings, unsigned int count) } ve->base.mask |= sibling->mask; + ve->base.logical_mask |= sibling->logical_mask; if (n != 0 && ve->base.class != sibling->class) { DRM_DEBUG("invalid mixing of engine class, sibling %d, already %d\n", -- 2.32.0