[PATCH 0/5] drm/nouveau: CRC fixes

[PATCH 0/5] drm/nouveau: CRC fixes

[Lyude Paul]

Over vacation I did a bunch of work on getting igt working for evo GPUs.
Note though some of these fixes are for nvdisplay GPUs, as I noticed a
couple of things along the way (like the fact that you CAN use the core
channel for tag updating on turing+, hooray!).

Lyude Paul (5):
  drm/nouveau/kms/nv50-: Use drm_dbg_kms() in crc.c
  drm/nouveau/kms/nv50-: Check vbl count after CRC context flip
  drm/nouveau/kms/nv140-: Use hard-coded wndws or core channel for CRC
    channel
  drm/nouveau/kms/nvd9-nv138: Fix CRC calculation for the cursor channel
  drm/nouveau/kms/nv140-: Add CRC methods to gv100_disp_core_mthd_head

 drivers/gpu/drm/nouveau/dispnv50/Kbuild       |  1 +
 drivers/gpu/drm/nouveau/dispnv50/corec57d.c   |  2 +-
 drivers/gpu/drm/nouveau/dispnv50/crc.c        | 64 ++++++-----------
 drivers/gpu/drm/nouveau/dispnv50/crc.h        |  7 +-
 drivers/gpu/drm/nouveau/dispnv50/crc907d.c    |  8 +--
 drivers/gpu/drm/nouveau/dispnv50/crcc37d.c    | 45 +++---------
 drivers/gpu/drm/nouveau/dispnv50/crcc37d.h    | 40 +++++++++++
 drivers/gpu/drm/nouveau/dispnv50/crcc57d.c    | 58 ++++++++++++++++
 .../drm/nouveau/include/nvhw/class/clc57d.h   | 69 +++++++++++++++++++
 .../drm/nouveau/nvkm/engine/disp/coregv100.c  |  2 +
 10 files changed, 208 insertions(+), 88 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crcc37d.h
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crcc57d.c

-- 
2.29.2

[PATCH 1/5] drm/nouveau/kms/nv50-: Use drm_dbg_kms() in crc.c

[Lyude Paul]

Cc: Martin Peres <martin.peres-GANU6spQydw@public.gmane.org>
Cc: Jeremy Cline <jcline-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>
Signed-off-by: Lyude Paul <lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 drivers/gpu/drm/nouveau/dispnv50/crc.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c
index b8c31b697797..3c50b29a37ff 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c
@@ -84,7 +84,8 @@ static void nv50_crc_ctx_flip_work(struct kthread_work *base)
 	struct nv50_crc *crc = container_of(work, struct nv50_crc, flip_work);
 	struct nv50_head *head = container_of(crc, struct nv50_head, crc);
 	struct drm_crtc *crtc = &head->base.base;
-	struct nv50_disp *disp = nv50_disp(crtc->dev);
+	struct drm_device *dev = crtc->dev;
+	struct nv50_disp *disp = nv50_disp(dev);
 	u8 new_idx = crc->ctx_idx ^ 1;
 
 	/*
@@ -92,18 +93,15 @@ static void nv50_crc_ctx_flip_work(struct kthread_work *base)
 	 * try again for the next vblank if we don't grab the lock
 	 */
 	if (!mutex_trylock(&disp->mutex)) {
-		DRM_DEV_DEBUG_KMS(crtc->dev->dev,
-				  "Lock contended, delaying CRC ctx flip for head-%d\n",
-				  head->base.index);
+		drm_dbg_kms(dev, "Lock contended, delaying CRC ctx flip for %s\n", crtc->name);
 		drm_vblank_work_schedule(work,
 					 drm_crtc_vblank_count(crtc) + 1,
 					 true);
 		return;
 	}
 
-	DRM_DEV_DEBUG_KMS(crtc->dev->dev,
-			  "Flipping notifier ctx for head %d (%d -> %d)\n",
-			  drm_crtc_index(crtc), crc->ctx_idx, new_idx);
+	drm_dbg_kms(dev, "Flipping notifier ctx for %s (%d -> %d)\n",
+		    crtc->name, crc->ctx_idx, new_idx);
 
 	nv50_crc_program_ctx(head, NULL);
 	nv50_crc_program_ctx(head, &crc->ctx[new_idx]);
@@ -189,9 +187,9 @@ void nv50_crc_handle_vblank(struct nv50_head *head)
 		 * updates back-to-back without waiting, we'll just be
 		 * optimistic and assume we always miss exactly one frame.
 		 */
-		DRM_DEV_DEBUG_KMS(head->base.base.dev->dev,
-				  "Notifier ctx flip for head-%d finished, lost CRC for frame %llu\n",
-				  head->base.index, crc->frame);
+		drm_dbg_kms(head->base.base.dev,
+			    "Notifier ctx flip for head-%d finished, lost CRC for frame %llu\n",
+			    head->base.index, crc->frame);
 		crc->frame++;
 
 		nv50_crc_reset_ctx(ctx);
-- 
2.29.2

Re: [PATCH 1/5] drm/nouveau/kms/nv50-: Use drm_dbg_kms() in crc.c

[Simon Ser]

> Cc: Martin Peres <martin.peres-GANU6spQydw@public.gmane.org>
> Cc: Jeremy Cline <jcline-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> Cc: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>
> Signed-off-by: Lyude Paul <lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

Code LGTM:

Reviewed-by: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>

[PATCH 2/5] drm/nouveau/kms/nv50-: Check vbl count after CRC context flip

[Lyude Paul]

While I haven't seen us take too long in nv50_crc_ctx_flip_work() outside of
users with kernel logging on a serial port, it probably would be a good idea to
check how long we take just in case we need to go faster in the future.

Cc: Martin Peres <martin.peres-GANU6spQydw@public.gmane.org>
Cc: Jeremy Cline <jcline-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>
Signed-off-by: Lyude Paul <lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 drivers/gpu/drm/nouveau/dispnv50/crc.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c
index 3c50b29a37ff..ef942248345c 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c
@@ -86,6 +86,8 @@ static void nv50_crc_ctx_flip_work(struct kthread_work *base)
 	struct drm_crtc *crtc = &head->base.base;
 	struct drm_device *dev = crtc->dev;
 	struct nv50_disp *disp = nv50_disp(dev);
+	const uint64_t start_vbl = drm_crtc_vblank_count(crtc);
+	uint64_t end_vbl;
 	u8 new_idx = crc->ctx_idx ^ 1;
 
 	/*
@@ -94,9 +96,7 @@ static void nv50_crc_ctx_flip_work(struct kthread_work *base)
 	 */
 	if (!mutex_trylock(&disp->mutex)) {
 		drm_dbg_kms(dev, "Lock contended, delaying CRC ctx flip for %s\n", crtc->name);
-		drm_vblank_work_schedule(work,
-					 drm_crtc_vblank_count(crtc) + 1,
-					 true);
+		drm_vblank_work_schedule(work, start_vbl + 1, true);
 		return;
 	}
 
@@ -107,6 +107,12 @@ static void nv50_crc_ctx_flip_work(struct kthread_work *base)
 	nv50_crc_program_ctx(head, &crc->ctx[new_idx]);
 	mutex_unlock(&disp->mutex);
 
+	end_vbl = drm_crtc_vblank_count(crtc);
+	if (unlikely(end_vbl != start_vbl))
+		NV_ERROR(nouveau_drm(dev),
+			 "Failed to flip CRC context on %s on time (%llu > %llu)\n",
+			 crtc->name, end_vbl, start_vbl);
+
 	spin_lock_irq(&crc->lock);
 	crc->ctx_changed = true;
 	spin_unlock_irq(&crc->lock);
-- 
2.29.2

[PATCH 3/5] drm/nouveau/kms/nv140-: Use hard-coded wndws or core channel for CRC channel

[Lyude Paul]

Originally it was assumed based on Nvidia's open-gpu-docs and testing that
NVDisplay required that at least one wndw which belongs to a given head to be
used as the controlling channel
(NVC37D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL) in order for CRC capture to
function. While this is the case on Volta, Turing actually adds the ability to
instead use the core channel as the controlling channel. For Turing this is
quite useful, as it means that we can always default to the core channel as the
controlling channel and we don't need to be concerned about ensuring we have at
least one wndw channel owned by a head with CRC output enabled. While Volta
lacks this ability, Volta conveniently also lacks flexible wndw mapping -
meaning that we can always rely on each head having four wndw channels mapped to
it regardless of the atomic state.

So, simply use the hard-coded wndw mappings we're guaranteed to have on Volta as
the controlling channel, and use the core channel as the controlling channel for
Turing+. As a result this also renders the plane ownership logic in
nv50_crc_atomic_check() unnessecary, which gives us one less thing to implement
when we get support for flexible wndw mapping. We also can entirely drop the
wndw parameter from our set_src callbacks, and the atomic state.

Cc: Martin Peres <martin.peres-GANU6spQydw@public.gmane.org>
Cc: Jeremy Cline <jcline-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>
Signed-off-by: Lyude Paul <lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 drivers/gpu/drm/nouveau/dispnv50/Kbuild       |  1 +
 drivers/gpu/drm/nouveau/dispnv50/corec57d.c   |  2 +-
 drivers/gpu/drm/nouveau/dispnv50/crc.c        | 34 ++-------
 drivers/gpu/drm/nouveau/dispnv50/crc.h        |  7 +-
 drivers/gpu/drm/nouveau/dispnv50/crc907d.c    |  5 +-
 drivers/gpu/drm/nouveau/dispnv50/crcc37d.c    | 45 +++---------
 drivers/gpu/drm/nouveau/dispnv50/crcc37d.h    | 40 +++++++++++
 drivers/gpu/drm/nouveau/dispnv50/crcc57d.c    | 58 ++++++++++++++++
 .../drm/nouveau/include/nvhw/class/clc57d.h   | 69 +++++++++++++++++++
 9 files changed, 187 insertions(+), 74 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crcc37d.h
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crcc57d.c

diff --git a/drivers/gpu/drm/nouveau/dispnv50/Kbuild b/drivers/gpu/drm/nouveau/dispnv50/Kbuild
index 4488e1c061b3..28be2912ff74 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/Kbuild
+++ b/drivers/gpu/drm/nouveau/dispnv50/Kbuild
@@ -13,6 +13,7 @@ nouveau-y += dispnv50/corec57d.o
 nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crc.o
 nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crc907d.o
 nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crcc37d.o
+nouveau-$(CONFIG_DEBUG_FS) += dispnv50/crcc57d.o
 
 nouveau-y += dispnv50/dac507d.o
 nouveau-y += dispnv50/dac907d.o
diff --git a/drivers/gpu/drm/nouveau/dispnv50/corec57d.c b/drivers/gpu/drm/nouveau/dispnv50/corec57d.c
index 75876546eac1..53b1e2a569c1 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/corec57d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/corec57d.c
@@ -69,7 +69,7 @@ corec57d = {
 	.head = &headc57d,
 	.sor = &sorc37d,
 #if IS_ENABLED(CONFIG_DEBUG_FS)
-	.crc = &crcc37d,
+	.crc = &crcc57d,
 #endif
 };
 
diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c
index ef942248345c..49eb8e9fef22 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c
@@ -351,8 +351,6 @@ int nv50_crc_atomic_check_head(struct nv50_head *head,
 			       struct nv50_head_atom *armh)
 {
 	struct nv50_atom *atom = nv50_atom(asyh->state.state);
-	struct drm_device *dev = head->base.base.dev;
-	struct nv50_disp *disp = nv50_disp(dev);
 	bool changed = armh->crc.src != asyh->crc.src;
 
 	if (!armh->crc.src && !asyh->crc.src) {
@@ -361,30 +359,7 @@ int nv50_crc_atomic_check_head(struct nv50_head *head,
 		return 0;
 	}
 
-	/* While we don't care about entry tags, Volta+ hw always needs the
-	 * controlling wndw channel programmed to a wndw that's owned by our
-	 * head
-	 */
-	if (asyh->crc.src && disp->disp->object.oclass >= GV100_DISP &&
-	    !(BIT(asyh->crc.wndw) & asyh->wndw.owned)) {
-		if (!asyh->wndw.owned) {
-			/* TODO: once we support flexible channel ownership,
-			 * we should write some code here to handle attempting
-			 * to "steal" a plane: e.g. take a plane that is
-			 * currently not-visible and owned by another head,
-			 * and reassign it to this head. If we fail to do so,
-			 * we shuld reject the mode outright as CRC capture
-			 * then becomes impossible.
-			 */
-			NV_ATOMIC(nouveau_drm(dev),
-				  "No available wndws for CRC readback\n");
-			return -EINVAL;
-		}
-		asyh->crc.wndw = ffs(asyh->wndw.owned) - 1;
-	}
-
-	if (drm_atomic_crtc_needs_modeset(&asyh->state) || changed ||
-	    armh->crc.wndw != asyh->crc.wndw) {
+	if (drm_atomic_crtc_needs_modeset(&asyh->state) || changed) {
 		asyh->clr.crc = armh->crc.src && armh->state.active;
 		asyh->set.crc = asyh->crc.src && asyh->state.active;
 		if (changed)
@@ -471,9 +446,8 @@ void nv50_crc_atomic_set(struct nv50_head *head,
 	struct nouveau_encoder *outp =
 		nv50_real_outp(nv50_head_atom_get_encoder(asyh));
 
-	func->set_src(head, outp->or,
-		      nv50_crc_source_type(outp, asyh->crc.src),
-		      &crc->ctx[crc->ctx_idx], asyh->crc.wndw);
+	func->set_src(head, outp->or, nv50_crc_source_type(outp, asyh->crc.src),
+		      &crc->ctx[crc->ctx_idx]);
 }
 
 void nv50_crc_atomic_clr(struct nv50_head *head)
@@ -481,7 +455,7 @@ void nv50_crc_atomic_clr(struct nv50_head *head)
 	const struct nv50_crc_func *func =
 		nv50_disp(head->base.base.dev)->core->func->crc;
 
-	func->set_src(head, 0, NV50_CRC_SOURCE_TYPE_NONE, NULL, 0);
+	func->set_src(head, 0, NV50_CRC_SOURCE_TYPE_NONE, NULL);
 }
 
 static inline int
diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.h b/drivers/gpu/drm/nouveau/dispnv50/crc.h
index 4fce871b04c8..4823f1fde2dd 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc.h
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc.h
@@ -45,13 +45,11 @@ struct nv50_crc_notifier_ctx {
 
 struct nv50_crc_atom {
 	enum nv50_crc_source src;
-	/* Only used for gv100+ */
-	u8 wndw : 4;
 };
 
 struct nv50_crc_func {
-	int (*set_src)(struct nv50_head *, int or, enum nv50_crc_source_type,
-		       struct nv50_crc_notifier_ctx *, u32 wndw);
+	int (*set_src)(struct nv50_head *, int or, enum nv50_crc_source_type type,
+		       struct nv50_crc_notifier_ctx *ctx);
 	int (*set_ctx)(struct nv50_head *, struct nv50_crc_notifier_ctx *);
 	u32 (*get_entry)(struct nv50_head *, struct nv50_crc_notifier_ctx *,
 			 enum nv50_crc_source, int idx);
@@ -95,6 +93,7 @@ void nv50_crc_atomic_clr(struct nv50_head *);
 
 extern const struct nv50_crc_func crc907d;
 extern const struct nv50_crc_func crcc37d;
+extern const struct nv50_crc_func crcc57d;
 
 #else /* IS_ENABLED(CONFIG_DEBUG_FS) */
 struct nv50_crc {};
diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
index 0fb0fdb9f119..0a89ae9523d4 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
@@ -23,9 +23,8 @@ struct crc907d_notifier {
 } __packed;
 
 static int
-crc907d_set_src(struct nv50_head *head, int or,
-		enum nv50_crc_source_type source,
-		struct nv50_crc_notifier_ctx *ctx, u32 wndw)
+crc907d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source,
+		struct nv50_crc_notifier_ctx *ctx)
 {
 	struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
 	const int i = head->base.index;
diff --git a/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c b/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c
index 814e5bd97446..f10f6c484408 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crcc37d.c
@@ -2,6 +2,7 @@
 #include <drm/drm_crtc.h>
 
 #include "crc.h"
+#include "crcc37d.h"
 #include "core.h"
 #include "disp.h"
 #include "head.h"
@@ -10,38 +11,13 @@
 
 #include <nvhw/class/clc37d.h>
 
-#define CRCC37D_MAX_ENTRIES 2047
-
-struct crcc37d_notifier {
-	u32 status;
-
-	/* reserved */
-	u32 :32;
-	u32 :32;
-	u32 :32;
-	u32 :32;
-	u32 :32;
-	u32 :32;
-	u32 :32;
-
-	struct crcc37d_entry {
-		u32 status[2];
-		u32 :32; /* reserved */
-		u32 compositor_crc;
-		u32 rg_crc;
-		u32 output_crc[2];
-		u32 :32; /* reserved */
-	} entries[CRCC37D_MAX_ENTRIES];
-} __packed;
-
 static int
-crcc37d_set_src(struct nv50_head *head, int or,
-		enum nv50_crc_source_type source,
-		struct nv50_crc_notifier_ctx *ctx, u32 wndw)
+crcc37d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source,
+		struct nv50_crc_notifier_ctx *ctx)
 {
 	struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
 	const int i = head->base.index;
-	u32 crc_args = NVVAL(NVC37D, HEAD_SET_CRC_CONTROL, CONTROLLING_CHANNEL, wndw) |
+	u32 crc_args = NVVAL(NVC37D, HEAD_SET_CRC_CONTROL, CONTROLLING_CHANNEL, i * 4) |
 		       NVDEF(NVC37D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) |
 		       NVDEF(NVC37D, HEAD_SET_CRC_CONTROL, SECONDARY_CRC, NONE) |
 		       NVDEF(NVC37D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE);
@@ -75,8 +51,7 @@ crcc37d_set_src(struct nv50_head *head, int or,
 	return 0;
 }
 
-static int
-crcc37d_set_ctx(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx)
+int crcc37d_set_ctx(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx)
 {
 	struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
 	const int i = head->base.index;
@@ -89,9 +64,8 @@ crcc37d_set_ctx(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx)
 	return 0;
 }
 
-static u32 crcc37d_get_entry(struct nv50_head *head,
-			     struct nv50_crc_notifier_ctx *ctx,
-			     enum nv50_crc_source source, int idx)
+u32 crcc37d_get_entry(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx,
+		      enum nv50_crc_source source, int idx)
 {
 	struct crcc37d_notifier __iomem *notifier = ctx->mem.object.map.ptr;
 	struct crcc37d_entry __iomem *entry = &notifier->entries[idx];
@@ -105,8 +79,7 @@ static u32 crcc37d_get_entry(struct nv50_head *head,
 	return ioread32_native(crc_addr);
 }
 
-static bool crcc37d_ctx_finished(struct nv50_head *head,
-				 struct nv50_crc_notifier_ctx *ctx)
+bool crcc37d_ctx_finished(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx)
 {
 	struct nouveau_drm *drm = nouveau_drm(head->base.base.dev);
 	struct crcc37d_notifier __iomem *notifier = ctx->mem.object.map.ptr;
@@ -148,7 +121,7 @@ const struct nv50_crc_func crcc37d = {
 	.set_ctx = crcc37d_set_ctx,
 	.get_entry = crcc37d_get_entry,
 	.ctx_finished = crcc37d_ctx_finished,
-	.flip_threshold = CRCC37D_MAX_ENTRIES - 30,
+	.flip_threshold = CRCC37D_FLIP_THRESHOLD,
 	.num_entries = CRCC37D_MAX_ENTRIES,
 	.notifier_len = sizeof(struct crcc37d_notifier),
 };
diff --git a/drivers/gpu/drm/nouveau/dispnv50/crcc37d.h b/drivers/gpu/drm/nouveau/dispnv50/crcc37d.h
new file mode 100644
index 000000000000..f54425530ce0
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/dispnv50/crcc37d.h
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: MIT
+
+#ifndef __CRCC37D_H__
+#define __CRCC37D_H__
+
+#include <linux/types.h>
+
+#include "crc.h"
+
+#define CRCC37D_MAX_ENTRIES 2047
+#define CRCC37D_FLIP_THRESHOLD CRCC37D_MAX_ENTRIES - 30
+
+struct crcc37d_notifier {
+	u32 status;
+
+	/* reserved */
+	u32 :32;
+	u32 :32;
+	u32 :32;
+	u32 :32;
+	u32 :32;
+	u32 :32;
+	u32 :32;
+
+	struct crcc37d_entry {
+		u32 status[2];
+		u32 :32; /* reserved */
+		u32 compositor_crc;
+		u32 rg_crc;
+		u32 output_crc[2];
+		u32 :32; /* reserved */
+	} entries[CRCC37D_MAX_ENTRIES];
+} __packed;
+
+int crcc37d_set_ctx(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx);
+u32 crcc37d_get_entry(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx,
+		      enum nv50_crc_source source, int idx);
+bool crcc37d_ctx_finished(struct nv50_head *head, struct nv50_crc_notifier_ctx *ctx);
+
+#endif /* !__CRCC37D_H__ */
diff --git a/drivers/gpu/drm/nouveau/dispnv50/crcc57d.c b/drivers/gpu/drm/nouveau/dispnv50/crcc57d.c
new file mode 100644
index 000000000000..cc0130e3d496
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/dispnv50/crcc57d.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: MIT
+
+#include "crc.h"
+#include "crcc37d.h"
+#include "core.h"
+#include "disp.h"
+#include "head.h"
+
+#include <nvif/pushc37b.h>
+
+#include <nvhw/class/clc57d.h>
+
+static int crcc57d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source,
+			   struct nv50_crc_notifier_ctx *ctx)
+{
+	struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push;
+	const int i = head->base.index;
+	u32 crc_args = NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, CONTROLLING_CHANNEL, CORE) |
+		       NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) |
+		       NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, SECONDARY_CRC, NONE) |
+		       NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE);
+	int ret;
+
+	switch (source) {
+	case NV50_CRC_SOURCE_TYPE_SOR:
+		crc_args |= NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, PRIMARY_CRC, SOR(or));
+		break;
+	case NV50_CRC_SOURCE_TYPE_SF:
+		crc_args |= NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, PRIMARY_CRC, SF);
+		break;
+	default:
+		break;
+	}
+
+	ret = PUSH_WAIT(push, 4);
+	if (ret)
+		return ret;
+
+	if (source) {
+		PUSH_MTHD(push, NVC57D, HEAD_SET_CONTEXT_DMA_CRC(i), ctx->ntfy.handle);
+		PUSH_MTHD(push, NVC57D, HEAD_SET_CRC_CONTROL(i), crc_args);
+	} else {
+		PUSH_MTHD(push, NVC57D, HEAD_SET_CRC_CONTROL(i), 0);
+		PUSH_MTHD(push, NVC57D, HEAD_SET_CONTEXT_DMA_CRC(i), 0);
+	}
+
+	return 0;
+}
+
+const struct nv50_crc_func crcc57d = {
+	.set_src = crcc57d_set_src,
+	.set_ctx = crcc37d_set_ctx,
+	.get_entry = crcc37d_get_entry,
+	.ctx_finished = crcc37d_ctx_finished,
+	.flip_threshold = CRCC37D_FLIP_THRESHOLD,
+	.num_entries = CRCC37D_MAX_ENTRIES,
+	.notifier_len = sizeof(struct crcc37d_notifier),
+};
diff --git a/drivers/gpu/drm/nouveau/include/nvhw/class/clc57d.h b/drivers/gpu/drm/nouveau/include/nvhw/class/clc57d.h
index d83ac815e06c..d4bad2da3e56 100644
--- a/drivers/gpu/drm/nouveau/include/nvhw/class/clc57d.h
+++ b/drivers/gpu/drm/nouveau/include/nvhw/class/clc57d.h
@@ -265,6 +265,75 @@
 #define NVC57D_HEAD_SET_RASTER_BLANK_START(a)                                   (0x00002070 + (a)*0x00000400)
 #define NVC57D_HEAD_SET_RASTER_BLANK_START_X                                    14:0
 #define NVC57D_HEAD_SET_RASTER_BLANK_START_Y                                    30:16
+#define NVC57D_HEAD_SET_CONTEXT_DMA_CRC(a)                                      (0x00002180 + (a)*0x00000400)
+#define NVC57D_HEAD_SET_CONTEXT_DMA_CRC_HANDLE                                  31:0
+#define NVC57D_HEAD_SET_CRC_CONTROL(a)                                          (0x00002184 + (a)*0x00000400)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL                         5:0
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_0                   (0x00000000)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_1                   (0x00000001)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_2                   (0x00000002)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_3                   (0x00000003)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_4                   (0x00000004)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_5                   (0x00000005)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_6                   (0x00000006)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_7                   (0x00000007)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_8                   (0x00000008)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_9                   (0x00000009)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_10                  (0x0000000A)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_11                  (0x0000000B)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_12                  (0x0000000C)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_13                  (0x0000000D)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_14                  (0x0000000E)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_15                  (0x0000000F)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_16                  (0x00000010)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_17                  (0x00000011)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_18                  (0x00000012)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_19                  (0x00000013)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_20                  (0x00000014)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_21                  (0x00000015)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_22                  (0x00000016)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_23                  (0x00000017)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_24                  (0x00000018)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_25                  (0x00000019)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_26                  (0x0000001A)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_27                  (0x0000001B)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_28                  (0x0000001C)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_29                  (0x0000001D)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_30                  (0x0000001E)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_WIN_31                  (0x0000001F)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CONTROLLING_CHANNEL_CORE                    (0x00000020)
+#define NVC57D_HEAD_SET_CRC_CONTROL_EXPECT_BUFFER_COLLAPSE                      8:8
+#define NVC57D_HEAD_SET_CRC_CONTROL_EXPECT_BUFFER_COLLAPSE_FALSE                (0x00000000)
+#define NVC57D_HEAD_SET_CRC_CONTROL_EXPECT_BUFFER_COLLAPSE_TRUE                 (0x00000001)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC                                 19:12
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_NONE                            (0x00000000)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SF                              (0x00000030)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR(i)                          (0x00000050 +(i))
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR__SIZE_1                     8
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR0                            (0x00000050)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR1                            (0x00000051)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR2                            (0x00000052)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR3                            (0x00000053)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR4                            (0x00000054)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR5                            (0x00000055)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR6                            (0x00000056)
+#define NVC57D_HEAD_SET_CRC_CONTROL_PRIMARY_CRC_SOR7                            (0x00000057)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC                               27:20
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_NONE                          (0x00000000)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SF                            (0x00000030)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR(i)                        (0x00000050 +(i))
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR__SIZE_1                   8
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR0                          (0x00000050)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR1                          (0x00000051)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR2                          (0x00000052)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR3                          (0x00000053)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR4                          (0x00000054)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR5                          (0x00000055)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR6                          (0x00000056)
+#define NVC57D_HEAD_SET_CRC_CONTROL_SECONDARY_CRC_SOR7                          (0x00000057)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CRC_DURING_SNOOZE                           9:9
+#define NVC57D_HEAD_SET_CRC_CONTROL_CRC_DURING_SNOOZE_DISABLE                   (0x00000000)
+#define NVC57D_HEAD_SET_CRC_CONTROL_CRC_DURING_SNOOZE_ENABLE                    (0x00000001)
 #define NVC57D_HEAD_SET_OLUT_CONTROL(a)                                         (0x00002280 + (a)*0x00000400)
 #define NVC57D_HEAD_SET_OLUT_CONTROL_INTERPOLATE                                0:0
 #define NVC57D_HEAD_SET_OLUT_CONTROL_INTERPOLATE_DISABLE                        (0x00000000)
-- 
2.29.2

[PATCH 4/5] drm/nouveau/kms/nvd9-nv138: Fix CRC calculation for the cursor channel

[Lyude Paul]

While working on igt support for nouveau, I noticed that CRC calculation
appeared to be broken when the cursor channel was being used. For example,
if I had an igt test that would compare a software rendered image of a
completely black fb with a green square in it, and then attempt to
reproduce that image by positioning the cursor channel and setting it to a
green rectangle, the CRCs output by the hardware would differ between the
reference fb's CRC and the output's CRC. This was bizarre particularly
because through use of the Chamelium I have, I was able to confirm that the
image coming out of the display was identical between the reference and
output. As well, the issue wouldn't happen when using the outp CRC sources
that use the SF CRC source (so, DisplayPort) - only sources using the SOR
CRC source (so, everything other then DisplayPort and VGA). It also didn't
happen with the ovly plane, only the cursor plane.

Eventually I noticed 0x00000040 being set in the default state cache values
for the CRC methods, which isn't in Nvidia's open-gpu-docs and as such
appears to be inadvertently cleared to 0s when we enable CRCs. After
enabling this again during CRC capture, CRCs appear to be calculated
normally in all circumstances now.

Note that we might need to do this for Volta+ as well, but I'm not
entirely sure yet as there seem to be some bugs with how Volta+ handles
cursors that are currently causing kms_cursor_crc tests to fail.

Cc: Martin Peres <martin.peres-GANU6spQydw@public.gmane.org>
Cc: Jeremy Cline <jcline-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>
Signed-off-by: Lyude Paul <lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 drivers/gpu/drm/nouveau/dispnv50/crc907d.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
index 0a89ae9523d4..f9cb484437aa 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
@@ -32,7 +32,8 @@ crc907d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source
 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) |
 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, TIMESTAMP_MODE, FALSE) |
 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, SECONDARY_OUTPUT, NONE) |
-		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE);
+		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE) |
+		       0x00000040;
 	int ret;
 
 	switch (source) {
-- 
2.29.2

[Nouveau] [PATCH v2] drm/nouveau/kms/nvd9-nv138: Fix CRC calculation for the cursor channel

[Lyude Paul]

Something that didn't get noticed until I started running cursor tests:
we're accidentally disabling an option for CRC calculation that's enabled
by default: WidePipeCrc, which controls whether we use the full width of
the data in the display pipe in order calculate CRCs. Having this disabled
apparently causes frames with the cursor plane enabled to generate
different CRCs than frames without the cursor plane enabled, even if the
frames are pixel-equivalent.

So, let's make sure to enable this and fix a bunch of cursor related tests
in IGT.

v2:
* Nvidia added the specific bit we were using to fix this issues to
  open-gpu-docs, so pull in the actual macro definitions for it

Cc: Martin Peres <martin.peres@free.fr>
Cc: Jeremy Cline <jcline@redhat.com>
Cc: Simon Ser <contact@emersion.fr>
Signed-off-by: Lyude Paul <lyude@redhat.com>
---
 drivers/gpu/drm/nouveau/dispnv50/crc907d.c          | 3 ++-
 drivers/gpu/drm/nouveau/include/nvhw/class/cl907d.h | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
index 0a89ae9523d4..f9ad641555b7 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/crc907d.c
@@ -32,7 +32,8 @@ crc907d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source
 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) |
 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, TIMESTAMP_MODE, FALSE) |
 		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, SECONDARY_OUTPUT, NONE) |
-		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE);
+		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE) |
+		       NVDEF(NV907D, HEAD_SET_CRC_CONTROL, WIDE_PIPE_CRC, ENABLE);
 	int ret;
 
 	switch (source) {
diff --git a/drivers/gpu/drm/nouveau/include/nvhw/class/cl907d.h b/drivers/gpu/drm/nouveau/include/nvhw/class/cl907d.h
index 79aff6ff3138..f972ef1409f4 100644
--- a/drivers/gpu/drm/nouveau/include/nvhw/class/cl907d.h
+++ b/drivers/gpu/drm/nouveau/include/nvhw/class/cl907d.h
@@ -246,6 +246,9 @@
 #define NV907D_HEAD_SET_CRC_CONTROL_CRC_DURING_SNOOZE                           5:5
 #define NV907D_HEAD_SET_CRC_CONTROL_CRC_DURING_SNOOZE_DISABLE                   (0x00000000)
 #define NV907D_HEAD_SET_CRC_CONTROL_CRC_DURING_SNOOZE_ENABLE                    (0x00000001)
+#define NV907D_HEAD_SET_CRC_CONTROL_WIDE_PIPE_CRC                               6:6
+#define NV907D_HEAD_SET_CRC_CONTROL_WIDE_PIPE_CRC_DISABLE                       (0x00000000)
+#define NV907D_HEAD_SET_CRC_CONTROL_WIDE_PIPE_CRC_ENABLE                        (0x00000001)
 #define NV907D_HEAD_SET_CONTEXT_DMA_CRC(a)                                      (0x00000438 + (a)*0x00000300)
 #define NV907D_HEAD_SET_CONTEXT_DMA_CRC_HANDLE                                  31:0
 #define NV907D_HEAD_SET_OUTPUT_LUT_LO(a)                                        (0x00000448 + (a)*0x00000300)
-- 
2.29.2

_______________________________________________
Nouveau mailing list
Nouveau@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/nouveau

[PATCH 5/5] drm/nouveau/kms/nv140-: Add CRC methods to gv100_disp_core_mthd_head

[Lyude Paul]

Noticed this while trying to figure out the bit that we need to set in
order to get cursor CRCs to come up correctly on volta+: we never actually
went and added these methods to gv100_disp_core_mthd_head in
drm/nouveau/nvkm/engine/disp/coregv100.c which means we don't trace their
values when disp tracing is enabled in nvkm. So, fix that.

Cc: Martin Peres <martin.peres-GANU6spQydw@public.gmane.org>
Cc: Jeremy Cline <jcline-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Simon Ser <contact-sV0wSBM+kKVWj0EZb7rXcA@public.gmane.org>
Signed-off-by: Lyude Paul <lyude-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 drivers/gpu/drm/nouveau/nvkm/engine/disp/coregv100.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregv100.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregv100.c
index e20a48f201f6..448a515057c7 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregv100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/coregv100.c
@@ -106,6 +106,8 @@ gv100_disp_core_mthd_head = {
 		{ 0x20a4, 0x6820a4 },
 		{ 0x20a8, 0x6820a8 },
 		{ 0x20ac, 0x6820ac },
+		{ 0x2180, 0x682180 },
+		{ 0x2184, 0x682184 },
 		{ 0x218c, 0x68218c },
 		{ 0x2194, 0x682194 },
 		{ 0x2198, 0x682198 },
-- 
2.29.2