[PATCH v2 1/4] dma-fence: add dma_fence_match_context helper

[PATCH v2 1/4] dma-fence: add dma_fence_match_context helper

[Philipp Zabel]

Add a helper to check if all fences in a fence array are from a given
context. For convenience, the function can also handle being given a
non-array fence.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 drivers/dma-buf/dma-fence-array.c | 26 ++++++++++++++++++++++++++
 include/linux/dma-fence-array.h   |  2 ++
 2 files changed, 28 insertions(+)

diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
index 67eb7c8fb88c3..0350829ba62e7 100644
--- a/drivers/dma-buf/dma-fence-array.c
+++ b/drivers/dma-buf/dma-fence-array.c
@@ -144,3 +144,29 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
 	return array;
 }
 EXPORT_SYMBOL(dma_fence_array_create);
+
+/**
+ * dma_fence_match_context - Check if all fences are from the given context
+ * @fence:		[in]	fence or fence array
+ * @context:		[in]	fence context to check all fences against
+ *
+ * Checks the provided fence or, for a fence array, all fences in the array
+ * against the given context. Returns false if any fence is from a different
+ * context.
+ */
+bool dma_fence_match_context(struct dma_fence *fence, u64 context)
+{
+	struct dma_fence_array *array = to_dma_fence_array(fence);
+	unsigned i;
+
+	if (!dma_fence_is_array(fence))
+		return fence->context == context;
+
+	for (i = 0; i < array->num_fences; i++) {
+		if (array->fences[i]->context != context)
+			return false;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(dma_fence_match_context);
diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
index 5900945f962dd..332a5420243c4 100644
--- a/include/linux/dma-fence-array.h
+++ b/include/linux/dma-fence-array.h
@@ -83,4 +83,6 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
 					       u64 context, unsigned seqno,
 					       bool signal_on_any);
 
+bool dma_fence_match_context(struct dma_fence *fence, u64 context);
+
 #endif /* __LINUX_DMA_FENCE_ARRAY_H */
-- 
2.11.0

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 2/4] drm/etnaviv: submit support for in-fences

[Philipp Zabel]

Loosely based on commit f0a42bb5423a ("drm/msm: submit support for
in-fences"). Unfortunately, struct drm_etnaviv_gem_submit doesn't have
a flags field yet, so we have to extend the structure and trust that
drm_ioctl will clear the flags for us if an older userspace only submits
part of the struct.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
v2: Use dma_fence_match_context to skip waiting if all in-fences are ours.
---
 drivers/gpu/drm/etnaviv/Kconfig              |  1 +
 drivers/gpu/drm/etnaviv/etnaviv_gem.h        |  1 +
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 34 +++++++++++++++++++++++++++-
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c        |  5 +++-
 drivers/gpu/drm/etnaviv/etnaviv_gpu.h        |  2 +-
 include/uapi/drm/etnaviv_drm.h               |  6 +++++
 6 files changed, 46 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/Kconfig b/drivers/gpu/drm/etnaviv/Kconfig
index cc1731c5289c2..71cee4e9fefbb 100644
--- a/drivers/gpu/drm/etnaviv/Kconfig
+++ b/drivers/gpu/drm/etnaviv/Kconfig
@@ -5,6 +5,7 @@ config DRM_ETNAVIV
 	depends on ARCH_MXC || ARCH_DOVE || (ARM && COMPILE_TEST)
 	depends on MMU
 	select SHMEM
+	select SYNC_FILE
 	select TMPFS
 	select IOMMU_API
 	select IOMMU_SUPPORT
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
index e63ff116a3b3d..120410d67eb5b 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
@@ -107,6 +107,7 @@ struct etnaviv_gem_submit {
 	u32 fence;
 	unsigned int nr_bos;
 	struct etnaviv_gem_submit_bo bos[0];
+	u32 flags;
 };
 
 int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index 726090d7a6ace..fb8d5befbf4f1 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -14,7 +14,9 @@
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/dma-fence-array.h>
 #include <linux/reservation.h>
+#include <linux/sync_file.h>
 #include "etnaviv_cmdbuf.h"
 #include "etnaviv_drv.h"
 #include "etnaviv_gpu.h"
@@ -169,8 +171,10 @@ static int submit_fence_sync(const struct etnaviv_gem_submit *submit)
 	for (i = 0; i < submit->nr_bos; i++) {
 		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
 		bool write = submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE;
+		bool explicit = !(submit->flags & ETNA_SUBMIT_NO_IMPLICIT);
 
-		ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write);
+		ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write,
+						 explicit);
 		if (ret)
 			break;
 	}
@@ -303,6 +307,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 	struct etnaviv_gem_submit *submit;
 	struct etnaviv_cmdbuf *cmdbuf;
 	struct etnaviv_gpu *gpu;
+	struct dma_fence *in_fence = NULL;
 	void *stream;
 	int ret;
 
@@ -326,6 +331,11 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 		return -EINVAL;
 	}
 
+	if (args->flags & ~ETNA_SUBMIT_FLAGS) {
+		DRM_ERROR("invalid flags: 0x%x\n", args->flags);
+		return -EINVAL;
+	}
+
 	/*
 	 * Copy the command submission and bo array to kernel space in
 	 * one go, and do this outside of any locks.
@@ -371,6 +381,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 		goto err_submit_cmds;
 	}
 
+	submit->flags = args->flags;
+
 	ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
 	if (ret)
 		goto err_submit_objects;
@@ -385,6 +397,24 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 		goto err_submit_objects;
 	}
 
+	if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
+		in_fence = sync_file_get_fence(args->fence_fd);
+		if (!in_fence) {
+			ret = -EINVAL;
+			goto err_submit_objects;
+		}
+
+		/*
+		 * Wait if the fence is from a foreign context, or if the fence
+		 * array contains any fence from a foreign context.
+		 */
+		if (!dma_fence_match_context(in_fence, gpu->fence_context)) {
+			ret = dma_fence_wait(in_fence, true);
+			if (ret)
+				goto err_submit_objects;
+		}
+	}
+
 	ret = submit_fence_sync(submit);
 	if (ret)
 		goto err_submit_objects;
@@ -419,6 +449,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 		flush_workqueue(priv->wq);
 
 err_submit_objects:
+	if (in_fence)
+		dma_fence_put(in_fence);
 	submit_cleanup(submit);
 
 err_submit_cmds:
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 130d7d517a19a..51d52c72aef17 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1064,7 +1064,7 @@ static struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
 }
 
 int etnaviv_gpu_fence_sync_obj(struct etnaviv_gem_object *etnaviv_obj,
-	unsigned int context, bool exclusive)
+	unsigned int context, bool exclusive, bool explicit)
 {
 	struct reservation_object *robj = etnaviv_obj->resv;
 	struct reservation_object_list *fobj;
@@ -1077,6 +1077,9 @@ int etnaviv_gpu_fence_sync_obj(struct etnaviv_gem_object *etnaviv_obj,
 			return ret;
 	}
 
+	if (explicit)
+		return 0;
+
 	/*
 	 * If we have any shared fences, then the exclusive fence
 	 * should be ignored as it will already have been signalled.
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index 1c0606ea7d5e8..dc27c7a039060 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -181,7 +181,7 @@ int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m);
 #endif
 
 int etnaviv_gpu_fence_sync_obj(struct etnaviv_gem_object *etnaviv_obj,
-	unsigned int context, bool exclusive);
+	unsigned int context, bool exclusive, bool implicit);
 
 void etnaviv_gpu_retire(struct etnaviv_gpu *gpu);
 int etnaviv_gpu_wait_fence_interruptible(struct etnaviv_gpu *gpu,
diff --git a/include/uapi/drm/etnaviv_drm.h b/include/uapi/drm/etnaviv_drm.h
index 2584c1cca42f6..e9c388a1d8ebe 100644
--- a/include/uapi/drm/etnaviv_drm.h
+++ b/include/uapi/drm/etnaviv_drm.h
@@ -154,6 +154,10 @@ struct drm_etnaviv_gem_submit_bo {
  * one or more cmdstream buffers.  This allows for conditional execution
  * (context-restore), and IB buffers needed for per tile/bin draw cmds.
  */
+#define ETNA_SUBMIT_NO_IMPLICIT         0x0001
+#define ETNA_SUBMIT_FENCE_FD_IN         0x0002
+#define ETNA_SUBMIT_FLAGS		(ETNA_SUBMIT_NO_IMPLICIT | \
+					 ETNA_SUBMIT_FENCE_FD_IN)
 #define ETNA_PIPE_3D      0x00
 #define ETNA_PIPE_2D      0x01
 #define ETNA_PIPE_VG      0x02
@@ -167,6 +171,8 @@ struct drm_etnaviv_gem_submit {
 	__u64 bos;            /* in, ptr to array of submit_bo's */
 	__u64 relocs;         /* in, ptr to array of submit_reloc's */
 	__u64 stream;         /* in, ptr to cmdstream */
+	__u32 flags;          /* in, mask of ETNA_SUBMIT_x */
+	__s32 fence_fd;       /* in, fence fd (see ETNA_SUBMIT_FENCE_FD_IN) */
 };
 
 /* The normal way to synchronize with the GPU is just to CPU_PREP on
-- 
2.11.0

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 3/4] drm/etnaviv: move fence allocation out of etnaviv_gpu_submit()

[Philipp Zabel]

The next patch will need the dma_fence to create the sync_file in
etnaviv_ioctl_gem_submit, in case an out_fence_fd is requested.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_gem.h        |  3 ++-
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c |  8 +++++++-
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c        | 21 ++++++---------------
 drivers/gpu/drm/etnaviv/etnaviv_gpu.h        |  1 +
 4 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
index 120410d67eb5b..c4a091e874269 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
@@ -20,6 +20,7 @@
 #include <linux/reservation.h>
 #include "etnaviv_drv.h"
 
+struct dma_fence;
 struct etnaviv_gem_ops;
 struct etnaviv_gem_object;
 
@@ -104,7 +105,7 @@ struct etnaviv_gem_submit {
 	struct drm_device *dev;
 	struct etnaviv_gpu *gpu;
 	struct ww_acquire_ctx ticket;
-	u32 fence;
+	struct dma_fence *fence;
 	unsigned int nr_bos;
 	struct etnaviv_gem_submit_bo bos[0];
 	u32 flags;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index fb8d5befbf4f1..be88411de35a4 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -431,11 +431,17 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 	memcpy(cmdbuf->vaddr, stream, args->stream_size);
 	cmdbuf->user_size = ALIGN(args->stream_size, 8);
 
+	submit->fence = etnaviv_gpu_fence_alloc(gpu);
+	if (!submit->fence) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
 	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
 	if (ret == 0)
 		cmdbuf = NULL;
 
-	args->fence = submit->fence;
+	args->fence = submit->fence->seqno;
 
 out:
 	submit_unpin_objects(submit);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 51d52c72aef17..a439700cc577f 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1047,7 +1047,7 @@ static const struct dma_fence_ops etnaviv_fence_ops = {
 	.release = etnaviv_fence_release,
 };
 
-static struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
+struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
 {
 	struct etnaviv_fence *f;
 
@@ -1290,7 +1290,6 @@ void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu)
 int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 	struct etnaviv_gem_submit *submit, struct etnaviv_cmdbuf *cmdbuf)
 {
-	struct dma_fence *fence;
 	unsigned int event, i;
 	int ret;
 
@@ -1314,18 +1313,10 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 		goto out_pm_put;
 	}
 
-	fence = etnaviv_gpu_fence_alloc(gpu);
-	if (!fence) {
-		event_free(gpu, event);
-		ret = -ENOMEM;
-		goto out_pm_put;
-	}
-
 	mutex_lock(&gpu->lock);
 
-	gpu->event[event].fence = fence;
-	submit->fence = fence->seqno;
-	gpu->active_fence = submit->fence;
+	gpu->event[event].fence = submit->fence;
+	gpu->active_fence = submit->fence->seqno;
 
 	if (gpu->lastctx != cmdbuf->ctx) {
 		gpu->mmu->need_flush = true;
@@ -1335,7 +1326,7 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 
 	etnaviv_buffer_queue(gpu, event, cmdbuf);
 
-	cmdbuf->fence = fence;
+	cmdbuf->fence = submit->fence;
 	list_add_tail(&cmdbuf->node, &gpu->active_cmd_list);
 
 	/* We're committed to adding this command buffer, hold a PM reference */
@@ -1351,10 +1342,10 @@ int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
 
 		if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
 			reservation_object_add_excl_fence(etnaviv_obj->resv,
-							  fence);
+							  submit->fence);
 		else
 			reservation_object_add_shared_fence(etnaviv_obj->resv,
-							    fence);
+							    submit->fence);
 	}
 	cmdbuf->nr_bos = submit->nr_bos;
 	hangcheck_timer_reset(gpu);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index dc27c7a039060..20f7191018daf 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -180,6 +180,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu);
 int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m);
 #endif
 
+struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu);
 int etnaviv_gpu_fence_sync_obj(struct etnaviv_gem_object *etnaviv_obj,
 	unsigned int context, bool exclusive, bool implicit);
 
-- 
2.11.0

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v2 4/4] drm/etnaviv: submit support for out-fences

[Philipp Zabel]

Based on commit 4cd0945901a6 ("drm/msm: submit support for out-fences").
We increment the minor driver version so userspace can detect explicit
fence support.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
---
v2: Dropped unnecessary braces
---
 drivers/gpu/drm/etnaviv/etnaviv_drv.c        |  2 +-
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 26 ++++++++++++++++++++++++++
 include/uapi/drm/etnaviv_drm.h               |  6 ++++--
 3 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index 289a9f8c66710..5255278dde560 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -512,7 +512,7 @@ static struct drm_driver etnaviv_drm_driver = {
 	.desc               = "etnaviv DRM",
 	.date               = "20151214",
 	.major              = 1,
-	.minor              = 0,
+	.minor              = 1,
 };
 
 /*
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index be88411de35a4..8a1381ca0354b 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -308,6 +308,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 	struct etnaviv_cmdbuf *cmdbuf;
 	struct etnaviv_gpu *gpu;
 	struct dma_fence *in_fence = NULL;
+	struct sync_file *sync_file = NULL;
+	int out_fence_fd = -1;
 	void *stream;
 	int ret;
 
@@ -375,6 +377,14 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 		goto err_submit_cmds;
 	}
 
+	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
+		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
+		if (out_fence_fd < 0) {
+			ret = out_fence_fd;
+			goto err_submit_cmds;
+		}
+	}
+
 	submit = submit_create(dev, gpu, args->nr_bos);
 	if (!submit) {
 		ret = -ENOMEM;
@@ -437,10 +447,24 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 		goto out;
 	}
 
+	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
+		sync_file = sync_file_create(submit->fence);
+		if (!sync_file) {
+			dma_fence_put(submit->fence);
+			submit->fence = NULL;
+			ret = -ENOMEM;
+			goto out;
+		}
+	}
+
 	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
 	if (ret == 0)
 		cmdbuf = NULL;
 
+	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT)
+		fd_install(out_fence_fd, sync_file->file);
+
+	args->fence_fd = out_fence_fd;
 	args->fence = submit->fence->seqno;
 
 out:
@@ -460,6 +484,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 	submit_cleanup(submit);
 
 err_submit_cmds:
+	if (ret && (out_fence_fd >= 0))
+		put_unused_fd(out_fence_fd);
 	/* if we still own the cmdbuf */
 	if (cmdbuf)
 		etnaviv_cmdbuf_free(cmdbuf);
diff --git a/include/uapi/drm/etnaviv_drm.h b/include/uapi/drm/etnaviv_drm.h
index e9c388a1d8ebe..76f6f78a352ba 100644
--- a/include/uapi/drm/etnaviv_drm.h
+++ b/include/uapi/drm/etnaviv_drm.h
@@ -156,8 +156,10 @@ struct drm_etnaviv_gem_submit_bo {
  */
 #define ETNA_SUBMIT_NO_IMPLICIT         0x0001
 #define ETNA_SUBMIT_FENCE_FD_IN         0x0002
+#define ETNA_SUBMIT_FENCE_FD_OUT        0x0004
 #define ETNA_SUBMIT_FLAGS		(ETNA_SUBMIT_NO_IMPLICIT | \
-					 ETNA_SUBMIT_FENCE_FD_IN)
+					 ETNA_SUBMIT_FENCE_FD_IN | \
+					 ETNA_SUBMIT_FENCE_FD_OUT)
 #define ETNA_PIPE_3D      0x00
 #define ETNA_PIPE_2D      0x01
 #define ETNA_PIPE_VG      0x02
@@ -172,7 +174,7 @@ struct drm_etnaviv_gem_submit {
 	__u64 relocs;         /* in, ptr to array of submit_reloc's */
 	__u64 stream;         /* in, ptr to cmdstream */
 	__u32 flags;          /* in, mask of ETNA_SUBMIT_x */
-	__s32 fence_fd;       /* in, fence fd (see ETNA_SUBMIT_FENCE_FD_IN) */
+	__s32 fence_fd;       /* in/out, fence fd (see ETNA_SUBMIT_FENCE_FD_x) */
 };
 
 /* The normal way to synchronize with the GPU is just to CPU_PREP on
-- 
2.11.0

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH v2 1/4] dma-fence: add dma_fence_match_context helper

[Gustavo Padovan]

Hi Philipp,

2017-03-17 Philipp Zabel <p.zabel@pengutronix.de>:

> Add a helper to check if all fences in a fence array are from a given
> context. For convenience, the function can also handle being given a
> non-array fence.
> 
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> ---
>  drivers/dma-buf/dma-fence-array.c | 26 ++++++++++++++++++++++++++
>  include/linux/dma-fence-array.h   |  2 ++
>  2 files changed, 28 insertions(+)

Looks good to me.

Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>

Gustavo
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH v2 2/4] drm/etnaviv: submit support for in-fences

[Gustavo Padovan]

Hi Philipp,

2017-03-17 Philipp Zabel <p.zabel@pengutronix.de>:

> Loosely based on commit f0a42bb5423a ("drm/msm: submit support for
> in-fences"). Unfortunately, struct drm_etnaviv_gem_submit doesn't have
> a flags field yet, so we have to extend the structure and trust that
> drm_ioctl will clear the flags for us if an older userspace only submits
> part of the struct.
> 
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> v2: Use dma_fence_match_context to skip waiting if all in-fences are ours.
> ---
>  drivers/gpu/drm/etnaviv/Kconfig              |  1 +
>  drivers/gpu/drm/etnaviv/etnaviv_gem.h        |  1 +
>  drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 34 +++++++++++++++++++++++++++-
>  drivers/gpu/drm/etnaviv/etnaviv_gpu.c        |  5 +++-
>  drivers/gpu/drm/etnaviv/etnaviv_gpu.h        |  2 +-
>  include/uapi/drm/etnaviv_drm.h               |  6 +++++
>  6 files changed, 46 insertions(+), 3 deletions(-)

Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>

Gustavo
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH v2 1/4] dma-fence: add dma_fence_match_context helper

[Sumit Semwal]

Hi Philipp,

thanks for the patch!

On 17 March 2017 at 22:04, Philipp Zabel <p.zabel@pengutronix.de> wrote:
> Add a helper to check if all fences in a fence array are from a given
> context. For convenience, the function can also handle being given a
> non-array fence.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> ---

Looks good to me, please feel free to add my
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>

>  drivers/dma-buf/dma-fence-array.c | 26 ++++++++++++++++++++++++++
>  include/linux/dma-fence-array.h   |  2 ++
>  2 files changed, 28 insertions(+)
>
> diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
> index 67eb7c8fb88c3..0350829ba62e7 100644
> --- a/drivers/dma-buf/dma-fence-array.c
> +++ b/drivers/dma-buf/dma-fence-array.c
> @@ -144,3 +144,29 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
>         return array;
>  }
>  EXPORT_SYMBOL(dma_fence_array_create);
> +
> +/**
> + * dma_fence_match_context - Check if all fences are from the given context
> + * @fence:             [in]    fence or fence array
> + * @context:           [in]    fence context to check all fences against
> + *
> + * Checks the provided fence or, for a fence array, all fences in the array
> + * against the given context. Returns false if any fence is from a different
> + * context.
> + */
> +bool dma_fence_match_context(struct dma_fence *fence, u64 context)
> +{
> +       struct dma_fence_array *array = to_dma_fence_array(fence);
> +       unsigned i;
> +
> +       if (!dma_fence_is_array(fence))
> +               return fence->context == context;
> +
> +       for (i = 0; i < array->num_fences; i++) {
> +               if (array->fences[i]->context != context)
> +                       return false;
> +       }
> +
> +       return true;
> +}
> +EXPORT_SYMBOL(dma_fence_match_context);
> diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
> index 5900945f962dd..332a5420243c4 100644
> --- a/include/linux/dma-fence-array.h
> +++ b/include/linux/dma-fence-array.h
> @@ -83,4 +83,6 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
>                                                u64 context, unsigned seqno,
>                                                bool signal_on_any);
>
> +bool dma_fence_match_context(struct dma_fence *fence, u64 context);
> +
>  #endif /* __LINUX_DMA_FENCE_ARRAY_H */
> --
> 2.11.0
>

Best,
Sumit.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH v2 2/4] drm/etnaviv: submit support for in-fences

[Sumit Semwal]

Hi Philipp,

Thanks for your patch!

On 17 March 2017 at 22:04, Philipp Zabel <p.zabel@pengutronix.de> wrote:
> Loosely based on commit f0a42bb5423a ("drm/msm: submit support for
> in-fences"). Unfortunately, struct drm_etnaviv_gem_submit doesn't have
> a flags field yet, so we have to extend the structure and trust that
> drm_ioctl will clear the flags for us if an older userspace only submits
> part of the struct.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Please feel free to add my
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>

> ---
> v2: Use dma_fence_match_context to skip waiting if all in-fences are ours.
> ---

<snip>

Best,
Sumit.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH v2 1/4] dma-fence: add dma_fence_match_context helper

[Christian König]

Am 17.03.2017 um 17:34 schrieb Philipp Zabel:
> Add a helper to check if all fences in a fence array are from a given
> context. For convenience, the function can also handle being given a
> non-array fence.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

Reviewed-by: Christian König <christian.koenig@amd.com>

> ---
>   drivers/dma-buf/dma-fence-array.c | 26 ++++++++++++++++++++++++++
>   include/linux/dma-fence-array.h   |  2 ++
>   2 files changed, 28 insertions(+)
>
> diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
> index 67eb7c8fb88c3..0350829ba62e7 100644
> --- a/drivers/dma-buf/dma-fence-array.c
> +++ b/drivers/dma-buf/dma-fence-array.c
> @@ -144,3 +144,29 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
>   	return array;
>   }
>   EXPORT_SYMBOL(dma_fence_array_create);
> +
> +/**
> + * dma_fence_match_context - Check if all fences are from the given context
> + * @fence:		[in]	fence or fence array
> + * @context:		[in]	fence context to check all fences against
> + *
> + * Checks the provided fence or, for a fence array, all fences in the array
> + * against the given context. Returns false if any fence is from a different
> + * context.
> + */
> +bool dma_fence_match_context(struct dma_fence *fence, u64 context)
> +{
> +	struct dma_fence_array *array = to_dma_fence_array(fence);
> +	unsigned i;
> +
> +	if (!dma_fence_is_array(fence))
> +		return fence->context == context;
> +
> +	for (i = 0; i < array->num_fences; i++) {
> +		if (array->fences[i]->context != context)
> +			return false;
> +	}
> +
> +	return true;
> +}
> +EXPORT_SYMBOL(dma_fence_match_context);
> diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
> index 5900945f962dd..332a5420243c4 100644
> --- a/include/linux/dma-fence-array.h
> +++ b/include/linux/dma-fence-array.h
> @@ -83,4 +83,6 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
>   					       u64 context, unsigned seqno,
>   					       bool signal_on_any);
>   
> +bool dma_fence_match_context(struct dma_fence *fence, u64 context);
> +
>   #endif /* __LINUX_DMA_FENCE_ARRAY_H */


_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel