[Intel-gfx] [PATCH 1/3] drm/i915: Make LRC (un)pinning work on context and engine
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Wed Jan 20 05:40:55 PST 2016
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Previously intel_lr_context_(un)pin were operating on requests
which is in conflict with their names.
If we make them take a context and an engine, it makes the names
make more sense and it also makes future fixes possible.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Nick Hoath <nicholas.hoath at intel.com>
---
drivers/gpu/drm/i915/i915_gem.c | 2 +-
drivers/gpu/drm/i915/intel_lrc.c | 48 ++++++++++++++++++++--------------------
drivers/gpu/drm/i915/intel_lrc.h | 3 ++-
3 files changed, 27 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 6b0102da859c..a752b00d4ff3 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2681,7 +2681,7 @@ void i915_gem_request_free(struct kref *req_ref)
if (ctx) {
if (i915.enable_execlists) {
if (ctx != req->ring->default_context)
- intel_lr_context_unpin(req);
+ intel_lr_context_unpin(ctx, req->ring);
}
i915_gem_context_unreference(ctx);
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index faaf49077fea..48ca51a36948 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -225,7 +225,8 @@ enum {
#define GEN8_CTX_ID_SHIFT 32
#define CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT 0x17
-static int intel_lr_context_pin(struct drm_i915_gem_request *rq);
+static int intel_lr_context_pin(struct intel_context *ctx,
+ struct intel_engine_cs *engine);
static void lrc_setup_hardware_status_page(struct intel_engine_cs *ring,
struct drm_i915_gem_object *default_ctx_obj);
@@ -599,7 +600,7 @@ static int execlists_context_queue(struct drm_i915_gem_request *request)
int num_elements = 0;
if (request->ctx != ring->default_context)
- intel_lr_context_pin(request);
+ intel_lr_context_pin(request->ctx, ring);
i915_gem_request_reference(request);
@@ -691,7 +692,7 @@ int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
request->ringbuf = request->ctx->engine[request->ring->id].ringbuf;
if (request->ctx != request->ring->default_context) {
- ret = intel_lr_context_pin(request);
+ ret = intel_lr_context_pin(request->ctx, request->ring);
if (ret)
return ret;
}
@@ -1007,7 +1008,7 @@ void intel_execlists_retire_requests(struct intel_engine_cs *ring)
ctx->engine[ring->id].state;
if (ctx_obj && (ctx != ring->default_context))
- intel_lr_context_unpin(req);
+ intel_lr_context_unpin(ctx, ring);
list_del(&req->execlist_link);
i915_gem_request_unreference(req);
}
@@ -1051,8 +1052,8 @@ int logical_ring_flush_all_caches(struct drm_i915_gem_request *req)
return 0;
}
-static int intel_lr_context_do_pin(struct intel_engine_cs *ring,
- struct intel_context *ctx)
+static int intel_lr_context_do_pin(struct intel_context *ctx,
+ struct intel_engine_cs *ring)
{
struct drm_device *dev = ring->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -1095,41 +1096,40 @@ unpin_ctx_obj:
return ret;
}
-static int intel_lr_context_pin(struct drm_i915_gem_request *rq)
+static int intel_lr_context_pin(struct intel_context *ctx,
+ struct intel_engine_cs *engine)
{
int ret = 0;
- struct intel_engine_cs *ring = rq->ring;
- if (rq->ctx->engine[ring->id].pin_count++ == 0) {
- ret = intel_lr_context_do_pin(ring, rq->ctx);
+ if (ctx->engine[engine->id].pin_count++ == 0) {
+ ret = intel_lr_context_do_pin(ctx, engine);
if (ret)
goto reset_pin_count;
}
return ret;
reset_pin_count:
- rq->ctx->engine[ring->id].pin_count = 0;
+ ctx->engine[engine->id].pin_count = 0;
return ret;
}
-void intel_lr_context_unpin(struct drm_i915_gem_request *rq)
+void intel_lr_context_unpin(struct intel_context *ctx,
+ struct intel_engine_cs *engine)
{
- struct intel_engine_cs *ring = rq->ring;
- struct drm_i915_gem_object *ctx_obj = rq->ctx->engine[ring->id].state;
- struct intel_ringbuffer *ringbuf = rq->ringbuf;
+ struct drm_i915_gem_object *ctx_obj = ctx->engine[engine->id].state;
- WARN_ON(!mutex_is_locked(&ring->dev->struct_mutex));
+ WARN_ON(!mutex_is_locked(&engine->dev->struct_mutex));
- if (!ctx_obj)
+ if (WARN_ON_ONCE(!ctx_obj))
return;
- if (--rq->ctx->engine[ring->id].pin_count == 0) {
- kunmap(kmap_to_page(rq->ctx->engine[ring->id].lrc_reg_state));
- intel_unpin_ringbuffer_obj(ringbuf);
+ if (--ctx->engine[engine->id].pin_count == 0) {
+ kunmap(kmap_to_page(ctx->engine[engine->id].lrc_reg_state));
+ intel_unpin_ringbuffer_obj(ctx->engine[engine->id].ringbuf);
i915_gem_object_ggtt_unpin(ctx_obj);
- rq->ctx->engine[ring->id].lrc_vma = NULL;
- rq->ctx->engine[ring->id].lrc_desc = 0;
- rq->ctx->engine[ring->id].lrc_reg_state = NULL;
+ ctx->engine[engine->id].lrc_vma = NULL;
+ ctx->engine[engine->id].lrc_desc = 0;
+ ctx->engine[engine->id].lrc_reg_state = NULL;
}
}
@@ -2032,7 +2032,7 @@ logical_ring_init(struct drm_device *dev, struct intel_engine_cs *ring)
goto error;
/* As this is the default context, always pin it */
- ret = intel_lr_context_do_pin(ring, ring->default_context);
+ ret = intel_lr_context_do_pin(ring->default_context, ring);
if (ret) {
DRM_ERROR(
"Failed to pin and map ringbuffer %s: %d\n",
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 49af638f6213..e6cda3e225d0 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -101,7 +101,8 @@ void intel_lr_context_free(struct intel_context *ctx);
uint32_t intel_lr_context_size(struct intel_engine_cs *ring);
int intel_lr_context_deferred_alloc(struct intel_context *ctx,
struct intel_engine_cs *ring);
-void intel_lr_context_unpin(struct drm_i915_gem_request *req);
+void intel_lr_context_unpin(struct intel_context *ctx,
+ struct intel_engine_cs *engine);
void intel_lr_context_reset(struct drm_device *dev,
struct intel_context *ctx);
uint64_t intel_lr_context_descriptor(struct intel_context *ctx,
--
1.9.1
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