diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_execbuffer.c | 25 | ||||
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 17 |
3 files changed, 41 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 5061cb32856b..83d2eb9e74cb 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -443,6 +443,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data, case I915_PARAM_HAS_EXEC_CAPTURE: case I915_PARAM_HAS_EXEC_BATCH_FIRST: case I915_PARAM_HAS_EXEC_FENCE_ARRAY: + case I915_PARAM_HAS_EXEC_SUBMIT_FENCE: /* For the time being all of these are always true; * if some supported hardware does not have one of these * features this value needs to be provided from diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index d6c5220addd0..7ce25b54c57b 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -2318,6 +2318,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, { struct i915_execbuffer eb; struct dma_fence *in_fence = NULL; + struct dma_fence *exec_fence = NULL; struct sync_file *out_fence = NULL; int out_fence_fd = -1; int err; @@ -2360,11 +2361,24 @@ i915_gem_do_execbuffer(struct drm_device *dev, return -EINVAL; } + if (args->flags & I915_EXEC_FENCE_SUBMIT) { + if (in_fence) { + err = -EINVAL; + goto err_in_fence; + } + + exec_fence = sync_file_get_fence(lower_32_bits(args->rsvd2)); + if (!exec_fence) { + err = -EINVAL; + goto err_in_fence; + } + } + if (args->flags & I915_EXEC_FENCE_OUT) { out_fence_fd = get_unused_fd_flags(O_CLOEXEC); if (out_fence_fd < 0) { err = out_fence_fd; - goto err_in_fence; + goto err_exec_fence; } } @@ -2494,6 +2508,13 @@ i915_gem_do_execbuffer(struct drm_device *dev, goto err_request; } + if (exec_fence) { + err = i915_request_await_execution(eb.request, exec_fence, + eb.engine->bond_execute); + if (err < 0) + goto err_request; + } + if (fences) { err = await_fence_array(&eb, fences); if (err) @@ -2555,6 +2576,8 @@ err_destroy: err_out_fence: if (out_fence_fd != -1) put_unused_fd(out_fence_fd); +err_exec_fence: + dma_fence_put(exec_fence); err_in_fence: dma_fence_put(in_fence); return err; diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index e2da9027bcdf..bdb00ec1f8be 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -604,6 +604,12 @@ typedef struct drm_i915_irq_wait { */ #define I915_PARAM_MMAP_GTT_COHERENT 52 +/* + * Query whether DRM_I915_GEM_EXECBUFFER2 supports coordination of parallel + * execution through use of explicit fence support. + * See I915_EXEC_FENCE_OUT and I915_EXEC_FENCE_SUBMIT. + */ +#define I915_PARAM_HAS_EXEC_SUBMIT_FENCE 53 /* Must be kept compact -- no holes and well documented */ typedef struct drm_i915_getparam { @@ -1126,7 +1132,16 @@ struct drm_i915_gem_execbuffer2 { */ #define I915_EXEC_FENCE_ARRAY (1<<19) -#define __I915_EXEC_UNKNOWN_FLAGS (-(I915_EXEC_FENCE_ARRAY<<1)) +/* + * Setting I915_EXEC_FENCE_SUBMIT implies that lower_32_bits(rsvd2) represent + * a sync_file fd to wait upon (in a nonblocking manner) prior to executing + * the batch. + * + * Returns -EINVAL if the sync_file fd cannot be found. + */ +#define I915_EXEC_FENCE_SUBMIT (1 << 20) + +#define __I915_EXEC_UNKNOWN_FLAGS (-(I915_EXEC_FENCE_SUBMIT << 1)) #define I915_EXEC_CONTEXT_ID_MASK (0xffffffff) #define i915_execbuffer2_set_context_id(eb2, context) \ |