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Andrey Grodzovsky

2017-Jan-17 05:16 UTC

[Nouveau] [PATCH v2 0/3] Allow ASYNC flip with atomic helpers.

This series is a folow-up on
https://patchwork.kernel.org/patch/9501787/

The first patch makes changes to atomic helpers to allow for 
drives with ASYNC flip support to use them.
Patch 2 is to use this in AMDGPU/DC.
Patch 3 is possible cleanup in nouveau/kms who seems to have to duplicate 
the helper as we did to support ASYNC flips. 

v2: 
Resend drm/atomic: Save flip flags in drm_plane_state since
the original patch was incomplete.
Squash 2 AMD changes into one to not break compilation.

Andrey Grodzovsky (3):
  drm/atomic: Save flip flags in drm_plane_state
  drm/amd/display: Switch to using atomic_helper for flip.
  drm/nouveau/kms/nv50: Switch to using atomic helper for flip.

 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h           |  1 -
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 92 ++--------------------
 drivers/gpu/drm/drm_atomic_helper.c                | 18 ++---
 drivers/gpu/drm/nouveau/nv50_display.c             | 77 ++----------------
 include/drm/drm_plane.h                            |  8 ++
 5 files changed, 24 insertions(+), 172 deletions(-)

-- 
1.9.1

Andrey Grodzovsky

2017-Jan-17 05:16 UTC

head link

[Nouveau] [PATCH v2 1/3] drm/atomic: Save flip flags in drm_plane_state

Allows using atomic flip helpers for drivers
using ASYNC flip.
Remove ASYNC_FLIP restriction in helpers and
caches the page flip flags in drm_plane_state
to be used in the low level drivers.

v2:
Resending the patch since the original was broken.
Remove comment about not supporting ASYNC flips.

Change-Id: I0219c3ec3ecceb82143ee176d30cb50d9aa76bf0
Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 18 +++++-------------
 include/drm/drm_plane.h             |  8 ++++++++
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c
b/drivers/gpu/drm/drm_atomic_helper.c
index a4e5477..12f70f2 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2737,7 +2737,8 @@ static int page_flip_common(
 				struct drm_atomic_state *state,
 				struct drm_crtc *crtc,
 				struct drm_framebuffer *fb,
-				struct drm_pending_vblank_event *event)
+				struct drm_pending_vblank_event *event,
+				uint32_t flags)
 {
 	struct drm_plane *plane = crtc->primary;
 	struct drm_plane_state *plane_state;
@@ -2754,6 +2755,7 @@ static int page_flip_common(
 	if (IS_ERR(plane_state))
 		return PTR_ERR(plane_state);
 
+	plane_state->pflip_flags = flags;
 
 	ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
 	if (ret != 0)
@@ -2781,10 +2783,6 @@ static int page_flip_common(
  * Provides a default &drm_crtc_funcs.page_flip implementation
  * using the atomic driver interface.
  *
- * Note that for now so called async page flips (i.e. updates which are not
- * synchronized to vblank) are not supported, since the atomic interfaces have
- * no provisions for this yet.
- *
  * Returns:
  * Returns 0 on success, negative errno numbers on failure.
  *
@@ -2800,9 +2798,6 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
 	struct drm_atomic_state *state;
 	int ret = 0;
 
-	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
-		return -EINVAL;
-
 	state = drm_atomic_state_alloc(plane->dev);
 	if (!state)
 		return -ENOMEM;
@@ -2810,7 +2805,7 @@ int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
 	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
 
 retry:
-	ret = page_flip_common(state, crtc, fb, event);
+	ret = page_flip_common(state, crtc, fb, event, flags);
 	if (ret != 0)
 		goto fail;
 
@@ -2865,9 +2860,6 @@ int drm_atomic_helper_page_flip_target(
 	struct drm_crtc_state *crtc_state;
 	int ret = 0;
 
-	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
-		return -EINVAL;
-
 	state = drm_atomic_state_alloc(plane->dev);
 	if (!state)
 		return -ENOMEM;
@@ -2875,7 +2867,7 @@ int drm_atomic_helper_page_flip_target(
 	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
 
 retry:
-	ret = page_flip_common(state, crtc, fb, event);
+	ret = page_flip_common(state, crtc, fb, event, flags);
 	if (ret != 0)
 		goto fail;
 
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index db3bbde..86d8ffc 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -122,6 +122,14 @@ struct drm_plane_state {
 	 */
 	bool visible;
 
+
+	/**
+	 * @pflip_flags:
+	 *
+	 * Flip related config options
+	 */
+	u32 pflip_flags;
+
 	struct drm_atomic_state *state;
 };
 
-- 
1.9.1

Andrey Grodzovsky

2017-Jan-17 05:16 UTC

head link

[Nouveau] [PATCH v2 2/3] drm/amd/display: Switch to using atomic_helper for flip.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h           |  1 -
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 92 ++--------------------
 2 files changed, 6 insertions(+), 87 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 4c0a86e..3ff3c14 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -443,7 +443,6 @@ struct amdgpu_crtc {
 	enum amdgpu_interrupt_state vsync_timer_enabled;
 
 	int otg_inst;
-	uint32_t flip_flags;
 	/* After Set Mode target will be non-NULL */
 	struct dc_target *target;
 };
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
index a443b70..d4664bf 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -1060,83 +1060,6 @@ static int dm_crtc_funcs_atomic_set_property(
 	return 0;
 }
 
-
-static int amdgpu_atomic_helper_page_flip(struct drm_crtc *crtc,
-				struct drm_framebuffer *fb,
-				struct drm_pending_vblank_event *event,
-				uint32_t flags)
-{
-	struct drm_plane *plane = crtc->primary;
-	struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
-	struct drm_atomic_state *state;
-	struct drm_plane_state *plane_state;
-	struct drm_crtc_state *crtc_state;
-	int ret = 0;
-
-	state = drm_atomic_state_alloc(plane->dev);
-	if (!state)
-		return -ENOMEM;
-
-	ret = drm_crtc_vblank_get(crtc);
-	if (ret)
-		return ret;
-
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
-retry:
-	crtc_state = drm_atomic_get_crtc_state(state, crtc);
-	if (IS_ERR(crtc_state)) {
-		ret = PTR_ERR(crtc_state);
-		goto fail;
-	}
-	crtc_state->event = event;
-
-	plane_state = drm_atomic_get_plane_state(state, plane);
-	if (IS_ERR(plane_state)) {
-		ret = PTR_ERR(plane_state);
-		goto fail;
-	}
-
-	ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
-	if (ret != 0)
-		goto fail;
-	drm_atomic_set_fb_for_plane(plane_state, fb);
-
-	/* Make sure we don't accidentally do a full modeset. */
-	state->allow_modeset = false;
-	if (!crtc_state->active) {
-		DRM_DEBUG_ATOMIC("[CRTC:%d] disabled, rejecting legacy flip\n",
-				 crtc->base.id);
-		ret = -EINVAL;
-		goto fail;
-	}
-	acrtc->flip_flags = flags;
-
-	ret = drm_atomic_nonblocking_commit(state);
-
-fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
-	if (ret)
-		drm_crtc_vblank_put(crtc);
-
-	drm_atomic_state_put(state);
-
-	return ret;
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
-}
-
 /* Implemented only the options currently availible for the driver */
 static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = {
 	.reset = drm_atomic_helper_crtc_reset,
@@ -1145,7 +1068,7 @@ static int amdgpu_atomic_helper_page_flip(struct drm_crtc
*crtc,
 	.destroy = amdgpu_dm_crtc_destroy,
 	.gamma_set = amdgpu_dm_atomic_crtc_gamma_set,
 	.set_config = drm_atomic_helper_set_config,
-	.page_flip = amdgpu_atomic_helper_page_flip,
+	.page_flip_target = drm_atomic_helper_page_flip_target,
 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 	.atomic_set_property = dm_crtc_funcs_atomic_set_property
@@ -1679,7 +1602,7 @@ static bool page_flip_needed(
 				    sizeof(old_state_tmp)) == 0 ? true:false;
 	if (new_state->crtc && page_flip_required == false) {
 		acrtc_new = to_amdgpu_crtc(new_state->crtc);
-		if (acrtc_new->flip_flags & DRM_MODE_PAGE_FLIP_ASYNC)
+		if (new_state->pflip_flags & DRM_MODE_PAGE_FLIP_ASYNC)
 			page_flip_required = true;
 	}
 	return page_flip_required;
@@ -2760,7 +2683,6 @@ int amdgpu_dm_atomic_commit(
 	for_each_plane_in_state(state, plane, old_plane_state, i) {
 		struct drm_plane_state *plane_state = plane->state;
 		struct drm_crtc *crtc = plane_state->crtc;
-		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 		struct drm_framebuffer *fb = plane_state->fb;
 
 		if (!fb || !crtc || !crtc->state->planes_changed ||
@@ -2771,10 +2693,9 @@ int amdgpu_dm_atomic_commit(
 			ret = amdgpu_crtc_page_flip_target(crtc,
 							   fb,
 							   crtc->state->event,
-							   acrtc->flip_flags,
-							   drm_crtc_vblank_count(crtc));
-			/*clean up the flags for next usage*/
-			acrtc->flip_flags = 0;
+							   plane_state->pflip_flags,
+							   crtc->state->target_vblank);
+
 			if (ret)
 				break;
 		}
@@ -3143,8 +3064,7 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
 			 * 1. This commit is not a page flip.
 			 * 2. This commit is a page flip, and targets are created.
 			 */
-			if (!page_flip_needed(plane_state, old_plane_state,
-					      true) ||
+			if (!page_flip_needed(plane_state, old_plane_state, true) ||
 					action == DM_COMMIT_ACTION_DPMS_ON ||
 					action == DM_COMMIT_ACTION_SET) {
 				struct dc_surface *surface;
-- 
1.9.1

Andrey Grodzovsky

2017-Jan-17 05:16 UTC

head link

[Nouveau] [PATCH v2 3/3] drm/nouveau/kms/nv50: Switch to using atomic helper for flip.

Change-Id: I5a3189c03e389af2ff6c13d870a7d28282b7b0ee
Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky at amd.com>
---
 drivers/gpu/drm/nouveau/nv50_display.c | 77 +++-------------------------------
 1 file changed, 5 insertions(+), 72 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_display.c
b/drivers/gpu/drm/nouveau/nv50_display.c
index 2c2c645..419e00c 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -846,6 +846,10 @@ struct nv50_wndw_func {
 	asyw->image.w = fb->base.width;
 	asyw->image.h = fb->base.height;
 	asyw->image.kind = (fb->nvbo->tile_flags & 0x0000ff00) >>
8;
+
+	asyw->interval +			asyw->state.pflip_flags &
DRM_MODE_PAGE_FLIP_ASYNC ? 0 : 1;
+
 	if (asyw->image.kind) {
 		asyw->image.layout = 0;
 		if (drm->device.info.chipset >= 0xc0)
@@ -2221,77 +2225,6 @@ struct nv50_base {
 	.atomic_check = nv50_head_atomic_check,
 };
 
-/* This is identical to the version in the atomic helpers, except that
- * it supports non-vblanked ("async") page flips.
- */
-static int
-nv50_head_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
-		    struct drm_pending_vblank_event *event, u32 flags)
-{
-	struct drm_plane *plane = crtc->primary;
-	struct drm_atomic_state *state;
-	struct drm_plane_state *plane_state;
-	struct drm_crtc_state *crtc_state;
-	int ret = 0;
-
-	state = drm_atomic_state_alloc(plane->dev);
-	if (!state)
-		return -ENOMEM;
-
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
-retry:
-	crtc_state = drm_atomic_get_crtc_state(state, crtc);
-	if (IS_ERR(crtc_state)) {
-		ret = PTR_ERR(crtc_state);
-		goto fail;
-	}
-	crtc_state->event = event;
-
-	plane_state = drm_atomic_get_plane_state(state, plane);
-	if (IS_ERR(plane_state)) {
-		ret = PTR_ERR(plane_state);
-		goto fail;
-	}
-
-	ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
-	if (ret != 0)
-		goto fail;
-	drm_atomic_set_fb_for_plane(plane_state, fb);
-
-	/* Make sure we don't accidentally do a full modeset. */
-	state->allow_modeset = false;
-	if (!crtc_state->active) {
-		DRM_DEBUG_ATOMIC("[CRTC:%d] disabled, rejecting legacy flip\n",
-				 crtc->base.id);
-		ret = -EINVAL;
-		goto fail;
-	}
-
-	if (flags & DRM_MODE_PAGE_FLIP_ASYNC)
-		nv50_wndw_atom(plane_state)->interval = 0;
-
-	ret = drm_atomic_nonblocking_commit(state);
-fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
-	drm_atomic_state_put(state);
-	return ret;
-
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
-}
-
 static int
 nv50_head_gamma_set(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
 		    uint32_t size)
@@ -2386,7 +2319,7 @@ struct nv50_base {
 	.gamma_set = nv50_head_gamma_set,
 	.destroy = nv50_head_destroy,
 	.set_config = drm_atomic_helper_set_config,
-	.page_flip = nv50_head_page_flip,
+	.page_flip = drm_atomic_helper_page_flip,
 	.set_property = drm_atomic_helper_crtc_set_property,
 	.atomic_duplicate_state = nv50_head_atomic_duplicate_state,
 	.atomic_destroy_state = nv50_head_atomic_destroy_state,
-- 
1.9.1

Edward O'Callaghan

2017-Jan-17 05:33 UTC

head link

[Nouveau] [PATCH v2 0/3] Allow ASYNC flip with atomic helpers.

This series is,
Reviewed-by: Edward O'Callaghan <funfunctor at folklore1984.net>

On 01/17/2017 04:16 PM, Andrey Grodzovsky wrote:> This series is a folow-up on
> https://patchwork.kernel.org/patch/9501787/
> 
> The first patch makes changes to atomic helpers to allow for 
> drives with ASYNC flip support to use them.
> Patch 2 is to use this in AMDGPU/DC.
> Patch 3 is possible cleanup in nouveau/kms who seems to have to duplicate 
> the helper as we did to support ASYNC flips. 
> 
> v2: 
> Resend drm/atomic: Save flip flags in drm_plane_state since
> the original patch was incomplete.
> Squash 2 AMD changes into one to not break compilation.
> 
> Andrey Grodzovsky (3):
>   drm/atomic: Save flip flags in drm_plane_state
>   drm/amd/display: Switch to using atomic_helper for flip.
>   drm/nouveau/kms/nv50: Switch to using atomic helper for flip.
> 
>  drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h           |  1 -
>  .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 92
++--------------------
>  drivers/gpu/drm/drm_atomic_helper.c                | 18 ++---
>  drivers/gpu/drm/nouveau/nv50_display.c             | 77 ++----------------
>  include/drm/drm_plane.h                            |  8 ++
>  5 files changed, 24 insertions(+), 172 deletions(-)
> 
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