From: Oscar Mateo <oscar.mateo@xxxxxxxxx>
We are going to start creating a lot of extra ringbuffers soon, so
these functions are handy.
No functional changes.
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 26 ++++++++++++++++----------
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 ++++
2 files changed, 20 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 279488a..915f3d5 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1378,15 +1378,25 @@ static int init_phys_status_page(struct intel_engine_cs *ring)
return 0;
}
-static int allocate_ring_buffer(struct intel_engine_cs *ring)
+void intel_destroy_ring_buffer(struct intel_ringbuffer *ringbuf)
+{
+ if (!ringbuf->obj)
+ return;
+
+ iounmap(ringbuf->virtual_start);
+ i915_gem_object_ggtt_unpin(ringbuf->obj);
+ drm_gem_object_unreference(&ringbuf->obj->base);
+ ringbuf->obj = NULL;
+}
+
+int intel_allocate_ring_buffer(struct drm_device *dev,
+ struct intel_ringbuffer *ringbuf)
{
- struct drm_device *dev = ring->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
- struct intel_ringbuffer *ringbuf = ring->buffer;
struct drm_i915_gem_object *obj;
int ret;
- if (intel_ring_initialized(ring))
+ if (ringbuf->obj)
return 0;
obj = NULL;
@@ -1455,7 +1465,7 @@ static int intel_init_ring_buffer(struct drm_device *dev,
goto error;
}
- ret = allocate_ring_buffer(ring);
+ ret = intel_allocate_ring_buffer(dev, ringbuf);
if (ret) {
DRM_ERROR("Failed to allocate ringbuffer %s: %d\n", ring->name, ret);
goto error;
@@ -1496,11 +1506,7 @@ void intel_cleanup_ring_buffer(struct intel_engine_cs *ring)
intel_stop_ring_buffer(ring);
WARN_ON(!IS_GEN2(ring->dev) && (I915_READ_MODE(ring) & MODE_IDLE) == 0);
- iounmap(ringbuf->virtual_start);
-
- i915_gem_object_ggtt_unpin(ringbuf->obj);
- drm_gem_object_unreference(&ringbuf->obj->base);
- ringbuf->obj = NULL;
+ intel_destroy_ring_buffer(ringbuf);
ring->preallocated_lazy_request = NULL;
ring->outstanding_lazy_seqno = 0;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 910c83c..dee5b37 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -318,6 +318,10 @@ int intel_init_vebox_ring_buffer(struct drm_device *dev);
u64 intel_ring_get_active_head(struct intel_engine_cs *ring);
void intel_ring_setup_status_page(struct intel_engine_cs *ring);
+void intel_destroy_ring_buffer(struct intel_ringbuffer *ringbuf);
+int intel_allocate_ring_buffer(struct drm_device *dev,
+ struct intel_ringbuffer *ringbuf);
+
static inline u32 intel_ring_get_tail(struct intel_engine_cs *ring)
{
return ring->buffer->tail;
--
1.9.0
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