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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-28 15:58:46 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-28 22:53:51 +0300 |
| commit | 73cb97010d4fdd2a29f00cac14d206c7641c23d2 (patch) | |
| tree | 12b4cce6baf04b330478ecfd85f002fd2c978db9 /drivers/gpu/drm/i915/intel_engine_cs.c | |
| parent | c004a90b7263e3d5811f6ec7de0abb143f3099b3 (diff) | |
| download | linux-73cb97010d4fdd2a29f00cac14d206c7641c23d2.tar.xz | |
drm/i915: Combine seqno + tracking into a global timeline struct
Our timelines are more than just a seqno. They also provide an ordered
list of requests to be executed. Due to the restriction of handling
individual address spaces, we are limited to a timeline per address
space but we use a fence context per engine within.
Our first step to introducing independent timelines per context (i.e. to
allow each context to have a queue of requests to execute that have a
defined set of dependencies on other requests) is to provide a timeline
abstraction for the global execution queue.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-23-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index fd551824adf9..6a3105512d18 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -174,7 +174,7 @@ cleanup: return ret; } -void intel_engine_init_seqno(struct intel_engine_cs *engine, u32 seqno) +void intel_engine_init_global_seqno(struct intel_engine_cs *engine, u32 seqno) { struct drm_i915_private *dev_priv = engine->i915; @@ -210,7 +210,9 @@ void intel_engine_init_seqno(struct intel_engine_cs *engine, u32 seqno) intel_write_status_page(engine, I915_GEM_HWS_INDEX, seqno); if (engine->irq_seqno_barrier) engine->irq_seqno_barrier(engine); - engine->last_submitted_seqno = seqno; + + GEM_BUG_ON(i915_gem_active_isset(&engine->timeline->last_request)); + engine->timeline->last_submitted_seqno = seqno; engine->hangcheck.seqno = seqno; @@ -225,10 +227,9 @@ void intel_engine_init_hangcheck(struct intel_engine_cs *engine) memset(&engine->hangcheck, 0, sizeof(engine->hangcheck)); } -static void intel_engine_init_requests(struct intel_engine_cs *engine) +static void intel_engine_init_timeline(struct intel_engine_cs *engine) { - init_request_active(&engine->last_request, NULL); - INIT_LIST_HEAD(&engine->request_list); + engine->timeline = &engine->i915->gt.global_timeline.engine[engine->id]; } /** @@ -245,9 +246,7 @@ void intel_engine_setup_common(struct intel_engine_cs *engine) INIT_LIST_HEAD(&engine->execlist_queue); spin_lock_init(&engine->execlist_lock); - engine->fence_context = dma_fence_context_alloc(1); - - intel_engine_init_requests(engine); + intel_engine_init_timeline(engine); intel_engine_init_hangcheck(engine); i915_gem_batch_pool_init(engine, &engine->batch_pool); |