From: John Harrison <John.C.Harrison@xxxxxxxxx>
The plan is to pass requests around as the basic submission tracking structure
rather than rings and contexts. This patch updates the i915_gem_object_sync()
code path.
v2: Much more complex patch to share a single request between the sync and the
page flip. The _sync() function now supports lazy allocation of the request
structure. That is, if one is passed in then that will be used. If one is not,
then a request will be allocated and passed back out. Note that the _sync() code
does not necessarily require a request. Thus one will only be created until
certain situations. The reason the lazy allocation must be done within the
_sync() code itself is because the decision to need one or not is not really
something that code above can second guess (except in the case where one is
definitely not required because no ring is passed in).
The call chains above _sync() now support passing a request through which most
callers passing in NULL and assuming that no request will be required (because
they also pass in NULL for the ring and therefore can't be generating any ring
code).
The exeception is intel_crtc_page_flip() which now supports having a request
returned from _sync(). If one is, then that request is shared by the page flip
(if the page flip is of a type to need a request). If _sync() does not generate
a request but the page flip does need one, then the page flip path will create
it's own request.
For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 6 ++++--
drivers/gpu/drm/i915/i915_gem.c | 19 ++++++++++++++++---
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +-
drivers/gpu/drm/i915/intel_display.c | 17 ++++++++++++-----
drivers/gpu/drm/i915/intel_drv.h | 3 ++-
drivers/gpu/drm/i915/intel_fbdev.c | 2 +-
drivers/gpu/drm/i915/intel_lrc.c | 2 +-
drivers/gpu/drm/i915/intel_overlay.c | 2 +-
8 files changed, 38 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ca070d3..55d82a7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2665,7 +2665,8 @@ static inline void i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
int __must_check i915_mutex_lock_interruptible(struct drm_device *dev);
int i915_gem_object_sync(struct drm_i915_gem_object *obj,
- struct intel_engine_cs *to);
+ struct intel_engine_cs *to,
+ struct drm_i915_gem_request **to_req);
void i915_vma_move_to_active(struct i915_vma *vma,
struct intel_engine_cs *ring);
int i915_gem_dumb_create(struct drm_file *file_priv,
@@ -2773,7 +2774,8 @@ i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
int __must_check
i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
u32 alignment,
- struct intel_engine_cs *pipelined);
+ struct intel_engine_cs *pipelined,
+ struct drm_i915_gem_request **pipelined_request);
void i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj);
int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
int align);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 0a25461..9114071 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2957,6 +2957,9 @@ out:
*
* @obj: object which may be in use on another ring.
* @to: ring we wish to use the object on. May be NULL.
+ * @to_req: request we wish to use the object for. May be NULL.
+ * This will be allocated and returned if a request is
+ * required but not passed in.
*
* This code is meant to abstract object synchronization with the GPU.
* Calling with NULL implies synchronizing the object with the CPU
@@ -2966,7 +2969,8 @@ out:
*/
int
i915_gem_object_sync(struct drm_i915_gem_object *obj,
- struct intel_engine_cs *to)
+ struct intel_engine_cs *to,
+ struct drm_i915_gem_request **to_req)
{
struct intel_engine_cs *from;
u32 seqno;
@@ -2980,6 +2984,8 @@ i915_gem_object_sync(struct drm_i915_gem_object *obj,
if (to == NULL || !i915_semaphore_is_enabled(obj->base.dev))
return i915_gem_object_wait_rendering(obj, false);
+ WARN_ON(!to_req);
+
idx = intel_ring_sync_index(from, to);
seqno = i915_gem_request_get_seqno(obj->last_read_req);
@@ -2988,6 +2994,12 @@ i915_gem_object_sync(struct drm_i915_gem_object *obj,
if (seqno <= from->semaphore.sync_seqno[idx])
return 0;
+ if (*to_req == NULL) {
+ ret = i915_gem_request_alloc(to, to->default_context, to_req);
+ if (ret)
+ return ret;
+ }
+
ret = i915_gem_check_olr(obj->last_read_req);
if (ret)
return ret;
@@ -3953,14 +3965,15 @@ static bool is_pin_display(struct drm_i915_gem_object *obj)
int
i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
u32 alignment,
- struct intel_engine_cs *pipelined)
+ struct intel_engine_cs *pipelined,
+ struct drm_i915_gem_request **pipelined_request)
{
u32 old_read_domains, old_write_domain;
bool was_pin_display;
int ret;
if (pipelined != i915_gem_request_get_ring(obj->last_read_req)) {
- ret = i915_gem_object_sync(obj, pipelined);
+ ret = i915_gem_object_sync(obj, pipelined, pipelined_request);
if (ret)
return ret;
}
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index eca88a6..1978f9c 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -902,7 +902,7 @@ i915_gem_execbuffer_move_to_gpu(struct drm_i915_gem_request *req,
list_for_each_entry(vma, vmas, exec_list) {
struct drm_i915_gem_object *obj = vma->obj;
- ret = i915_gem_object_sync(obj, req->ring);
+ ret = i915_gem_object_sync(obj, req->ring, &req);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index f1c0295..c71c523 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2245,7 +2245,8 @@ intel_fb_align_height(struct drm_device *dev, int height,
int
intel_pin_and_fence_fb_obj(struct drm_plane *plane,
struct drm_framebuffer *fb,
- struct intel_engine_cs *pipelined)
+ struct intel_engine_cs *pipelined,
+ struct drm_i915_gem_request **pipelined_request)
{
struct drm_device *dev = fb->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -2304,7 +2305,7 @@ intel_pin_and_fence_fb_obj(struct drm_plane *plane,
intel_runtime_pm_get(dev_priv);
dev_priv->mm.interruptible = false;
- ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
+ ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined, pipelined_request);
if (ret)
goto err_interruptible;
@@ -9882,6 +9883,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
enum pipe pipe = intel_crtc->pipe;
struct intel_unpin_work *work;
struct intel_engine_cs *ring;
+ struct drm_i915_gem_request *request = NULL;
int ret;
/*
@@ -9979,7 +9981,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
ring = &dev_priv->ring[RCS];
}
- ret = intel_pin_and_fence_fb_obj(crtc->primary, fb, ring);
+ ret = intel_pin_and_fence_fb_obj(crtc->primary, fb, ring, &request);
if (ret)
goto cleanup_pending;
@@ -10004,6 +10006,9 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
intel_ring_get_request(ring));
}
+ if (request)
+ i915_add_request_no_flush(request->ring);
+
work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
work->enable_stall_check = true;
@@ -10021,6 +10026,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
cleanup_unpin:
intel_unpin_fb_obj(obj);
cleanup_pending:
+ if (request)
+ i915_gem_request_cancel(request);
atomic_dec(&intel_crtc->unpin_work_count);
mutex_unlock(&dev->struct_mutex);
cleanup:
@@ -11975,7 +11982,7 @@ intel_prepare_plane_fb(struct drm_plane *plane,
if (ret)
DRM_DEBUG_KMS("failed to attach phys object\n");
} else {
- ret = intel_pin_and_fence_fb_obj(plane, fb, NULL);
+ ret = intel_pin_and_fence_fb_obj(plane, fb, NULL, NULL);
}
if (ret == 0)
@@ -13900,7 +13907,7 @@ void intel_modeset_gem_init(struct drm_device *dev)
if (intel_pin_and_fence_fb_obj(c->primary,
c->primary->fb,
- NULL)) {
+ NULL, NULL)) {
DRM_ERROR("failed to pin boot fb on pipe %d\n",
to_intel_crtc(c)->pipe);
drm_framebuffer_unreference(c->primary->fb);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 8bb18e5..6ad2823 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -961,7 +961,8 @@ void intel_release_load_detect_pipe(struct drm_connector *connector,
struct intel_load_detect_pipe *old);
int intel_pin_and_fence_fb_obj(struct drm_plane *plane,
struct drm_framebuffer *fb,
- struct intel_engine_cs *pipelined);
+ struct intel_engine_cs *pipelined,
+ struct drm_i915_gem_request **pipelined_request);
struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index 757c0d2..4e7e7da 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -151,7 +151,7 @@ static int intelfb_alloc(struct drm_fb_helper *helper,
}
/* Flush everything out, we'll be doing GTT only from now on */
- ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL);
+ ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL);
if (ret) {
DRM_ERROR("failed to pin obj: %d\n", ret);
goto out_fb;
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 0480ad4..93faf11 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -590,7 +590,7 @@ static int execlists_move_to_gpu(struct drm_i915_gem_request *req,
list_for_each_entry(vma, vmas, exec_list) {
struct drm_i915_gem_object *obj = vma->obj;
- ret = i915_gem_object_sync(obj, req->ring);
+ ret = i915_gem_object_sync(obj, req->ring, &req);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c
index 6af2581..ce7797c 100644
--- a/drivers/gpu/drm/i915/intel_overlay.c
+++ b/drivers/gpu/drm/i915/intel_overlay.c
@@ -720,7 +720,7 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
if (ret != 0)
return ret;
- ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL);
+ ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL, NULL);
if (ret != 0)
return ret;
--
1.7.9.5
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