diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_request.c | 84 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_request.h | 4 |
2 files changed, 83 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index 809d6ee10da6..18b34b0bf872 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -38,6 +38,8 @@ struct execute_cb { struct list_head link; struct irq_work work; struct i915_sw_fence *fence; + void (*hook)(struct i915_request *rq, struct dma_fence *signal); + struct i915_request *signal; }; static struct i915_global_request { @@ -329,6 +331,17 @@ static void irq_execute_cb(struct irq_work *wrk) kmem_cache_free(global.slab_execute_cbs, cb); } +static void irq_execute_cb_hook(struct irq_work *wrk) +{ + struct execute_cb *cb = container_of(wrk, typeof(*cb), work); + + cb->hook(container_of(cb->fence, struct i915_request, submit), + &cb->signal->fence); + i915_request_put(cb->signal); + + irq_execute_cb(wrk); +} + static void __notify_execute_cb(struct i915_request *rq) { struct execute_cb *cb; @@ -355,14 +368,19 @@ static void __notify_execute_cb(struct i915_request *rq) } static int -i915_request_await_execution(struct i915_request *rq, - struct i915_request *signal, - gfp_t gfp) +__i915_request_await_execution(struct i915_request *rq, + struct i915_request *signal, + void (*hook)(struct i915_request *rq, + struct dma_fence *signal), + gfp_t gfp) { struct execute_cb *cb; - if (i915_request_is_active(signal)) + if (i915_request_is_active(signal)) { + if (hook) + hook(rq, &signal->fence); return 0; + } cb = kmem_cache_alloc(global.slab_execute_cbs, gfp); if (!cb) @@ -372,8 +390,18 @@ i915_request_await_execution(struct i915_request *rq, i915_sw_fence_await(cb->fence); init_irq_work(&cb->work, irq_execute_cb); + if (hook) { + cb->hook = hook; + cb->signal = i915_request_get(signal); + cb->work.func = irq_execute_cb_hook; + } + spin_lock_irq(&signal->lock); if (i915_request_is_active(signal)) { + if (hook) { + hook(rq, &signal->fence); + i915_request_put(signal); + } i915_sw_fence_complete(cb->fence); kmem_cache_free(global.slab_execute_cbs, cb); } else { @@ -834,7 +862,7 @@ emit_semaphore_wait(struct i915_request *to, return err; /* Only submit our spinner after the signaler is running! */ - err = i915_request_await_execution(to, from, gfp); + err = __i915_request_await_execution(to, from, NULL, gfp); if (err) return err; @@ -970,6 +998,52 @@ i915_request_await_dma_fence(struct i915_request *rq, struct dma_fence *fence) return 0; } +int +i915_request_await_execution(struct i915_request *rq, + struct dma_fence *fence, + void (*hook)(struct i915_request *rq, + struct dma_fence *signal)) +{ + struct dma_fence **child = &fence; + unsigned int nchild = 1; + int ret; + + if (dma_fence_is_array(fence)) { + struct dma_fence_array *array = to_dma_fence_array(fence); + + /* XXX Error for signal-on-any fence arrays */ + + child = array->fences; + nchild = array->num_fences; + GEM_BUG_ON(!nchild); + } + + do { + fence = *child++; + if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags)) + continue; + + /* + * We don't squash repeated fence dependencies here as we + * want to run our callback in all cases. + */ + + if (dma_fence_is_i915(fence)) + ret = __i915_request_await_execution(rq, + to_request(fence), + hook, + I915_FENCE_GFP); + else + ret = i915_sw_fence_await_dma_fence(&rq->submit, fence, + I915_FENCE_TIMEOUT, + GFP_KERNEL); + if (ret < 0) + return ret; + } while (--nchild); + + return 0; +} + /** * i915_request_await_object - set this request to (async) wait upon a bo * @to: request we are wishing to use diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h index d7f9b2194568..c9f7d07991c8 100644 --- a/drivers/gpu/drm/i915/i915_request.h +++ b/drivers/gpu/drm/i915/i915_request.h @@ -283,6 +283,10 @@ int i915_request_await_object(struct i915_request *to, bool write); int i915_request_await_dma_fence(struct i915_request *rq, struct dma_fence *fence); +int i915_request_await_execution(struct i915_request *rq, + struct dma_fence *fence, + void (*hook)(struct i915_request *rq, + struct dma_fence *signal)); void i915_request_add(struct i915_request *rq); |