Not only does it make for good documentation and debugging aide, but it
is also vital for when we want to unwind requests - such as when
throwing away an incomplete request.
v2: Rebase
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_gem.c | 13 ++++++++----
drivers/gpu/drm/i915/i915_gem_context.c | 9 +--------
drivers/gpu/drm/i915/intel_lrc.c | 35 ---------------------------------
drivers/gpu/drm/i915/intel_lrc.h | 2 --
4 files changed, 10 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index d9b5bf4f1f21..e9f2d2b102de 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2462,7 +2462,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
struct drm_i915_private *dev_priv = ring->dev->dev_private;
struct drm_i915_gem_request *request;
struct intel_ringbuffer *ringbuf;
- u32 request_start;
int ret;
request = ring->outstanding_lazy_request;
@@ -2477,7 +2476,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
} else
ringbuf = ring->buffer;
- request_start = intel_ring_get_tail(ringbuf);
/*
* Emit any outstanding flushes - execbuf can fail to emit the flush
* after having emitted the batchbuffer command. Hence we need to fix
@@ -2505,7 +2503,6 @@ int __i915_add_request(struct intel_engine_cs *ring,
return ret;
}
- request->head = request_start;
request->tail = intel_ring_get_tail(ringbuf);
/* Whilst this request exists, batch_obj will be on the
@@ -2652,6 +2649,7 @@ int i915_gem_request_alloc(struct intel_engine_cs *ring,
return ret;
}
+ rq->head = intel_ring_get_tail(rq->ringbuf);
ring->outstanding_lazy_request = rq;
return 0;
}
@@ -2736,7 +2734,14 @@ static void i915_gem_reset_ring_cleanup(struct
drm_i915_private *dev_priv,
}
/* This may not have been flushed before the reset, so clean it now */
- i915_gem_request_assign(&ring->outstanding_lazy_request, NULL);
+ if (ring->outstanding_lazy_request) {
+ struct drm_i915_gem_request *request;
+
+ request = ring->outstanding_lazy_request;
+ request->ringbuf->tail = request->head;
+
+ i915_gem_request_assign(&ring->outstanding_lazy_request, NULL);
+ }
}
void i915_gem_restore_fences(struct drm_device *dev)
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c
b/drivers/gpu/drm/i915/i915_gem_context.c
index b9c6b0ad1d0f..43e58249235b 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -298,15 +298,8 @@ void i915_gem_context_reset(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
int i;
- if (i915.enable_execlists) {
- struct intel_context *ctx;
-
- list_for_each_entry(ctx, &dev_priv->context_list, link) {
- intel_lr_context_reset(dev, ctx);
- }
-
+ if (i915.enable_execlists)
return;
- }
for (i = 0; i < I915_NUM_RINGS; i++) {
struct intel_engine_cs *ring = &dev_priv->ring[i];
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index b3ca88ff88eb..459a27a2b486 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1804,38 +1804,3 @@ error_unpin_ctx:
drm_gem_object_unreference(&ctx_obj->base);
return ret;
}
-
-void intel_lr_context_reset(struct drm_device *dev,
- struct intel_context *ctx)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_engine_cs *ring;
- int i;
-
- for_each_ring(ring, dev_priv, i) {
- struct drm_i915_gem_object *ctx_obj =
- ctx->engine[ring->id].state;
- struct intel_ringbuffer *ringbuf =
- ctx->engine[ring->id].ringbuf;
- uint32_t *reg_state;
- struct page *page;
-
- if (!ctx_obj)
- continue;
-
- if (i915_gem_object_get_pages(ctx_obj)) {
- WARN(1, "Failed get_pages for context obj\n");
- continue;
- }
- page = i915_gem_object_get_page(ctx_obj, 1);
- reg_state = kmap_atomic(page);
-
- reg_state[CTX_RING_HEAD+1] = 0;
- reg_state[CTX_RING_TAIL+1] = 0;
-
- kunmap_atomic(reg_state);
-
- ringbuf->head = 0;
- ringbuf->tail = 0;
- }
-}
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 16c717672020..1aafb99cfff4 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -70,8 +70,6 @@ static inline void intel_logical_ring_emit(struct
intel_ringbuffer *ringbuf,
void intel_lr_context_free(struct intel_context *ctx);
int intel_lr_context_deferred_create(struct intel_context *ctx,
struct intel_engine_cs *ring);
-void intel_lr_context_reset(struct drm_device *dev,
- struct intel_context *ctx);
/* Execlists */
int intel_sanitize_enable_execlists(struct drm_device *dev, int
enable_execlists);
--
2.1.4
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