We can hide more details of execlists from higher level code by removing
the explicit call to create an execlist context from execbuffer and
into its first use by execlists.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 8 ------
drivers/gpu/drm/i915/intel_lrc.c | 39 ++++++++++++++++++------------
drivers/gpu/drm/i915/intel_lrc.h | 2 --
3 files changed, 23 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 6f4f2a6cdf93..e0ee5d1ac372 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1085,14 +1085,6 @@ i915_gem_validate_context(struct drm_device *dev, struct drm_file *file,
return ERR_PTR(-EIO);
}
- if (i915.enable_execlists && !ctx->engine[engine->id].state) {
- int ret = intel_lr_context_deferred_alloc(ctx, engine);
- if (ret) {
- DRM_DEBUG("Could not create LRC %u: %d\n", ctx_id, ret);
- return ERR_PTR(ret);
- }
- }
-
return ctx;
}
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index af80a056dc2f..e127804da297 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -227,6 +227,8 @@ enum {
#define GEN8_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT 0x17
#define GEN9_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT 0x26
+static int execlists_context_deferred_alloc(struct intel_context *ctx,
+ struct intel_engine_cs *engine);
static int intel_lr_context_pin(struct intel_context *ctx,
struct intel_engine_cs *engine);
@@ -675,16 +677,6 @@ int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
struct intel_engine_cs *engine = request->engine;
int ret;
- request->ringbuf = request->ctx->engine[engine->id].ringbuf;
-
- /* Flush enough space to reduce the likelihood of waiting after
- * we start building the request - in which case we will just
- * have to repeat work.
- */
- ret = intel_ring_begin(request, MIN_SPACE_FOR_ADD_REQUEST);
- if (ret)
- return ret;
-
if (i915.enable_guc_submission) {
/*
* Check that the GuC has space for the request before
@@ -698,6 +690,22 @@ int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
return ret;
}
+ if (request->ctx->engine[engine->id].state == NULL) {
+ ret = execlists_context_deferred_alloc(request->ctx, engine);
+ if (ret)
+ return ret;
+ }
+
+ request->ringbuf = request->ctx->engine[engine->id].ringbuf;
+
+ /* Flush enough space to reduce the likelihood of waiting after
+ * we start building the request - in which case we will just
+ * have to repeat work.
+ */
+ ret = intel_ring_begin(request, MIN_SPACE_FOR_ADD_REQUEST);
+ if (ret)
+ return ret;
+
ret = intel_lr_context_pin(request->ctx, engine);
if (ret)
return ret;
@@ -1999,7 +2007,7 @@ logical_ring_init(struct drm_device *dev, struct intel_engine_cs *engine)
if (ret)
goto error;
- ret = intel_lr_context_deferred_alloc(dctx, engine);
+ ret = execlists_context_deferred_alloc(dctx, engine);
if (ret)
goto error;
@@ -2473,9 +2481,9 @@ uint32_t intel_lr_context_size(struct intel_engine_cs *engine)
}
/**
- * intel_lr_context_deferred_alloc() - create the LRC specific bits of a context
+ * execlists_context_deferred_alloc() - create the LRC specific bits of a context
* @ctx: LR context to create.
- * @ring: engine to be used with the context.
+ * @engine: engine to be used with the context.
*
* This function can be called more than once, with different engines, if we plan
* to use the context with them. The context backing objects and the ringbuffers
@@ -2485,9 +2493,8 @@ uint32_t intel_lr_context_size(struct intel_engine_cs *engine)
*
* Return: non-zero on error.
*/
-
-int intel_lr_context_deferred_alloc(struct intel_context *ctx,
- struct intel_engine_cs *engine)
+static int execlists_context_deferred_alloc(struct intel_context *ctx,
+ struct intel_engine_cs *engine)
{
struct drm_device *dev = engine->dev;
struct drm_i915_gem_object *ctx_obj;
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 9510826f0d90..28ff324ba5dc 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -101,8 +101,6 @@ static inline void intel_logical_ring_emit_reg(struct intel_ringbuffer *ringbuf,
void intel_lr_context_free(struct intel_context *ctx);
uint32_t intel_lr_context_size(struct intel_engine_cs *engine);
-int intel_lr_context_deferred_alloc(struct intel_context *ctx,
- struct intel_engine_cs *engine);
void intel_lr_context_unpin(struct intel_context *ctx,
struct intel_engine_cs *engine);
--
2.8.1
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