From 6689cb2b62065b5417aeda13d57d61b437b2126e Mon Sep 17 00:00:00 2001 From: John Harrison Date: Thu, 19 Mar 2015 12:30:08 +0000 Subject: [PATCH] drm/i915: Move common request allocation code into a common function The request allocation code is largely duplicated between legacy mode and execlist mode. The actual difference between the two versions of the code is pretty minimal. This patch moves the common code out into a separate function. This is then called by the execution specific version prior to setting up the one different value. For: VIZ-5190 Signed-off-by: John Harrison Reviewed-by: Tomas Elf Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 2 ++ drivers/gpu/drm/i915/i915_gem.c | 37 +++++++++++++++++++++++ drivers/gpu/drm/i915/intel_lrc.c | 39 +++++-------------------- drivers/gpu/drm/i915/intel_lrc.h | 2 ++ drivers/gpu/drm/i915/intel_ringbuffer.c | 28 ++---------------- drivers/gpu/drm/i915/intel_ringbuffer.h | 2 ++ 6 files changed, 54 insertions(+), 56 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 727fc5448520..83cda2786e55 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2115,6 +2115,8 @@ struct drm_i915_gem_request { }; +int i915_gem_request_alloc(struct intel_engine_cs *ring, + struct intel_context *ctx); void i915_gem_request_free(struct kref *req_ref); static inline uint32_t diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 815223694f32..267fdf0f46ae 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2518,6 +2518,43 @@ void i915_gem_request_free(struct kref *req_ref) kfree(req); } +int i915_gem_request_alloc(struct intel_engine_cs *ring, + struct intel_context *ctx) +{ + int ret; + struct drm_i915_gem_request *request; + struct drm_i915_private *dev_private = ring->dev->dev_private; + + if (ring->outstanding_lazy_request) + return 0; + + request = kzalloc(sizeof(*request), GFP_KERNEL); + if (request == NULL) + return -ENOMEM; + + ret = i915_gem_get_seqno(ring->dev, &request->seqno); + if (ret) { + kfree(request); + return ret; + } + + kref_init(&request->ref); + request->ring = ring; + request->uniq = dev_private->request_uniq++; + + if (i915.enable_execlists) + ret = intel_logical_ring_alloc_request_extras(request, ctx); + else + ret = intel_ring_alloc_request_extras(request); + if (ret) { + kfree(request); + return ret; + } + + ring->outstanding_lazy_request = request; + return 0; +} + struct drm_i915_gem_request * i915_gem_find_active_request(struct intel_engine_cs *ring) { diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index cad4300dd55c..6504689467b1 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -611,44 +611,21 @@ static int execlists_move_to_gpu(struct intel_ringbuffer *ringbuf, return logical_ring_invalidate_all_caches(ringbuf, ctx); } -static int logical_ring_alloc_request(struct intel_engine_cs *ring, - struct intel_context *ctx) +int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request, + struct intel_context *ctx) { - struct drm_i915_gem_request *request; - struct drm_i915_private *dev_private = ring->dev->dev_private; int ret; - if (ring->outstanding_lazy_request) - return 0; - - request = kzalloc(sizeof(*request), GFP_KERNEL); - if (request == NULL) - return -ENOMEM; - - if (ctx != ring->default_context) { - ret = intel_lr_context_pin(ring, ctx); - if (ret) { - kfree(request); + if (ctx != request->ring->default_context) { + ret = intel_lr_context_pin(request->ring, ctx); + if (ret) return ret; - } - } - - kref_init(&request->ref); - request->ring = ring; - request->uniq = dev_private->request_uniq++; - - ret = i915_gem_get_seqno(ring->dev, &request->seqno); - if (ret) { - intel_lr_context_unpin(ring, ctx); - kfree(request); - return ret; } - request->ctx = ctx; + request->ringbuf = ctx->engine[request->ring->id].ringbuf; + request->ctx = ctx; i915_gem_context_reference(request->ctx); - request->ringbuf = ctx->engine[ring->id].ringbuf; - ring->outstanding_lazy_request = request; return 0; } @@ -840,7 +817,7 @@ static int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, return ret; /* Preallocate the olr before touching the ring */ - ret = logical_ring_alloc_request(ring, ctx); + ret = i915_gem_request_alloc(ring, ctx); if (ret) return ret; diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h index ac8f81a99fea..04d3a6d8b207 100644 --- a/drivers/gpu/drm/i915/intel_lrc.h +++ b/drivers/gpu/drm/i915/intel_lrc.h @@ -36,6 +36,8 @@ #define RING_CONTEXT_STATUS_PTR(ring) ((ring)->mmio_base+0x3a0) /* Logical Rings */ +int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request, + struct intel_context *ctx); void intel_logical_ring_stop(struct intel_engine_cs *ring); void intel_logical_ring_cleanup(struct intel_engine_cs *ring); int intel_logical_rings_init(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 441e2502b889..99fb2f06710a 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2181,32 +2181,10 @@ int intel_ring_idle(struct intel_engine_cs *ring) return i915_wait_request(req); } -static int -intel_ring_alloc_request(struct intel_engine_cs *ring) +int intel_ring_alloc_request_extras(struct drm_i915_gem_request *request) { - int ret; - struct drm_i915_gem_request *request; - struct drm_i915_private *dev_private = ring->dev->dev_private; - - if (ring->outstanding_lazy_request) - return 0; - - request = kzalloc(sizeof(*request), GFP_KERNEL); - if (request == NULL) - return -ENOMEM; - - kref_init(&request->ref); - request->ring = ring; - request->ringbuf = ring->buffer; - request->uniq = dev_private->request_uniq++; - - ret = i915_gem_get_seqno(ring->dev, &request->seqno); - if (ret) { - kfree(request); - return ret; - } + request->ringbuf = request->ring->buffer; - ring->outstanding_lazy_request = request; return 0; } @@ -2247,7 +2225,7 @@ int intel_ring_begin(struct intel_engine_cs *ring, return ret; /* Preallocate the olr before touching the ring */ - ret = intel_ring_alloc_request(ring); + ret = i915_gem_request_alloc(ring, ring->default_context); if (ret) return ret; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index c761fe05ad6f..6566dd447498 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -390,6 +390,8 @@ int intel_alloc_ringbuffer_obj(struct drm_device *dev, void intel_stop_ring_buffer(struct intel_engine_cs *ring); void intel_cleanup_ring_buffer(struct intel_engine_cs *ring); +int intel_ring_alloc_request_extras(struct drm_i915_gem_request *request); + int __must_check intel_ring_begin(struct intel_engine_cs *ring, int n); int __must_check intel_ring_cacheline_align(struct intel_engine_cs *ring); static inline void intel_ring_emit(struct intel_engine_cs *ring, -- 2.20.1