From: Andrey Grodzovsky <andrey.grodzov...@amd.com>
Make pflip atomic friendly. Split the fuinction into
whatever can fail part and the actual flip submit part.
Call the pre-submit function before atomic states
are swapped so in case of error we can fail the
IOCTL.
v2:
Update due to target_vblank code change.
Fix identetation.
Change return type for amdgpu_crtc_submit_flip to void
Signed-off-by: Andrey Grodzovsky <andrey.grodzov...@amd.com>
Reviewed-by Harry Wentland <harry.wentl...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 147 ++++++++++++++++++++++------
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 17 ++++
2 files changed, 135 insertions(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 4986340..d0ad619 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -138,10 +138,56 @@ static void amdgpu_unpin_work_func(struct work_struct
*__work)
kfree(work);
}
-int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_pending_vblank_event *event,
- uint32_t page_flip_flags, uint32_t target)
+
+static void amdgpu_flip_work_cleanup(struct amdgpu_flip_work *work)
+{
+ int i;
+
+ amdgpu_bo_unref(&work->old_abo);
+ dma_fence_put(work->excl);
+ for (i = 0; i < work->shared_count; ++i)
+ dma_fence_put(work->shared[i]);
+ kfree(work->shared);
+ kfree(work);
+}
+
+static void amdgpu_flip_cleanup_unreserve(
+ struct amdgpu_flip_work *work,
+ struct amdgpu_bo *new_abo)
+{
+ amdgpu_bo_unreserve(new_abo);
+ amdgpu_flip_work_cleanup(work);
+}
+
+static void amdgpu_flip_cleanup_unpin(
+ struct amdgpu_flip_work *work,
+ struct amdgpu_bo *new_abo)
+{
+ if (unlikely(amdgpu_bo_unpin(new_abo) != 0))
+ DRM_ERROR("failed to unpin new abo in error path\n");
+ amdgpu_flip_cleanup_unreserve(work, new_abo);
+}
+
+void amdgpu_crtc_cleanup_flip_ctx(
+ struct amdgpu_flip_work *work,
+ struct amdgpu_bo *new_abo)
+{
+ if (unlikely(amdgpu_bo_reserve(new_abo, false) != 0)) {
+ DRM_ERROR("failed to reserve new abo in error path\n");
+ amdgpu_flip_work_cleanup(work);
+ return;
+ }
+ amdgpu_flip_cleanup_unpin(work, new_abo);
+}
+
+int amdgpu_crtc_prepare_flip(
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags,
+ uint32_t target,
+ struct amdgpu_flip_work **work_p,
+ struct amdgpu_bo **new_abo_p)
{
struct drm_device *dev = crtc->dev;
struct amdgpu_device *adev = dev->dev_private;
@@ -154,7 +200,7 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
unsigned long flags;
u64 tiling_flags;
u64 base;
- int i, r;
+ int r;
work = kzalloc(sizeof *work, GFP_KERNEL);
if (work == NULL)
@@ -215,41 +261,84 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
r = -EBUSY;
goto pflip_cleanup;
- }
- amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING;
- amdgpu_crtc->pflip_works = work;
+ }
+ spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+ *work_p = work;
+ *new_abo_p = new_abo;
- DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work:
%p,\n",
- amdgpu_crtc->crtc_id, amdgpu_crtc,
work);
- /* update crtc fb */
- crtc->primary->fb = fb;
- spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
- amdgpu_flip_work_func(&work->flip_work.work);
return 0;
pflip_cleanup:
- if (unlikely(amdgpu_bo_reserve(new_abo, false) != 0)) {
- DRM_ERROR("failed to reserve new abo in error path\n");
- goto cleanup;
- }
+ amdgpu_crtc_cleanup_flip_ctx(work, new_abo);
+ return r;
+
unpin:
- if (unlikely(amdgpu_bo_unpin(new_abo) != 0)) {
- DRM_ERROR("failed to unpin new abo in error path\n");
- }
+ amdgpu_flip_cleanup_unpin(work, new_abo);
+ return r;
+
unreserve:
- amdgpu_bo_unreserve(new_abo);
+ amdgpu_flip_cleanup_unreserve(work, new_abo);
+ return r;
cleanup:
- amdgpu_bo_unref(&work->old_abo);
- dma_fence_put(work->excl);
- for (i = 0; i < work->shared_count; ++i)
- dma_fence_put(work->shared[i]);
- kfree(work->shared);
- kfree(work);
-
+ amdgpu_flip_work_cleanup(work);
return r;
+
+}
+
+void amdgpu_crtc_submit_flip(
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct amdgpu_flip_work *work,
+ struct amdgpu_bo *new_abo)
+{
+ unsigned long flags;
+ struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+
+ spin_lock_irqsave(&crtc->dev->event_lock, flags);
+ amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING;
+ amdgpu_crtc->pflip_works = work;
+
+ /* update crtc fb */
+ crtc->primary->fb = fb;
+ spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
+
+ DRM_DEBUG_DRIVER(
+ "crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work:
%p,\n",
+ amdgpu_crtc->crtc_id, amdgpu_crtc, work);
+
+ amdgpu_flip_work_func(&work->flip_work.work);
+}
+
+int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags,
+ uint32_t target)
+{
+ struct amdgpu_bo *new_abo;
+ struct amdgpu_flip_work *work;
+ int r = amdgpu_crtc_prepare_flip(
+ crtc,
+ fb,
+ event,
+ page_flip_flags,
+ target,
+ &work,
+ &new_abo);
+
+ if (r)
+ return r;
+
+ amdgpu_crtc_submit_flip(
+ crtc,
+ fb,
+ work,
+ new_abo);
+
+ return 0;
}
int amdgpu_crtc_set_config(struct drm_mode_set *set)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index b603467..b6d3bc3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -595,6 +595,23 @@ int amdgpu_crtc_page_flip_target(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags, uint32_t target);
+void amdgpu_crtc_cleanup_flip_ctx(
+ struct amdgpu_flip_work *work,
+ struct amdgpu_bo *new_abo);
+int amdgpu_crtc_prepare_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags,
+ uint32_t target,
+ struct amdgpu_flip_work **work,
+ struct amdgpu_bo **new_abo);
+
+void amdgpu_crtc_submit_flip(
+ struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct amdgpu_flip_work *work,
+ struct amdgpu_bo *new_abo);
+
extern const struct drm_mode_config_funcs amdgpu_mode_funcs;
#endif
--
2.5.5
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