[PATCH v2 4/4] drm/v3d: add multiple syncobjs support
Melissa Wen
mwen at igalia.com
Wed Sep 29 09:45:54 UTC 2021
Using the generic extension from the previous patch, a specific multisync
extension enables more than one in/out binary syncobj per job submission.
Arrays of syncobjs are set in struct drm_v3d_multisync, that also cares
of determining the stage for sync (wait deps) according to the job
queue.
v2:
- subclass the generic extension struct (Daniel)
- simplify adding dependency conditions to make understandable (Iago)
Signed-off-by: Melissa Wen <mwen at igalia.com>
---
drivers/gpu/drm/v3d/v3d_drv.c | 6 +-
drivers/gpu/drm/v3d/v3d_drv.h | 23 +++--
drivers/gpu/drm/v3d/v3d_gem.c | 176 ++++++++++++++++++++++++++++++----
include/uapi/drm/v3d_drm.h | 49 +++++++++-
4 files changed, 224 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 3d6b9bcce2f7..bd46396a1ae0 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -96,6 +96,9 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
case DRM_V3D_PARAM_SUPPORTS_PERFMON:
args->value = (v3d->ver >= 40);
return 0;
+ case DRM_V3D_PARAM_SUPPORTS_MULTISYNC_EXT:
+ args->value = 1;
+ return 0;
default:
DRM_DEBUG("Unknown parameter %d\n", args->param);
return -EINVAL;
@@ -135,9 +138,8 @@ v3d_postclose(struct drm_device *dev, struct drm_file *file)
struct v3d_file_priv *v3d_priv = file->driver_priv;
enum v3d_queue q;
- for (q = 0; q < V3D_MAX_QUEUES; q++) {
+ for (q = 0; q < V3D_MAX_QUEUES; q++)
drm_sched_entity_destroy(&v3d_priv->sched_entity[q]);
- }
v3d_perfmon_close_file(v3d_priv);
kfree(v3d_priv);
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h
index b900a050d5e2..b14ff1e96f49 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.h
+++ b/drivers/gpu/drm/v3d/v3d_drv.h
@@ -19,15 +19,6 @@ struct reset_control;
#define GMP_GRANULARITY (128 * 1024)
-/* Enum for each of the V3D queues. */
-enum v3d_queue {
- V3D_BIN,
- V3D_RENDER,
- V3D_TFU,
- V3D_CSD,
- V3D_CACHE_CLEAN,
-};
-
#define V3D_MAX_QUEUES (V3D_CACHE_CLEAN + 1)
struct v3d_queue_state {
@@ -294,6 +285,20 @@ struct v3d_csd_job {
struct drm_v3d_submit_csd args;
};
+struct v3d_submit_outsync {
+ struct drm_syncobj *syncobj;
+};
+
+struct v3d_submit_ext {
+ u32 wait_stage;
+
+ u32 in_sync_count;
+ u64 in_syncs;
+
+ u32 out_sync_count;
+ struct v3d_submit_outsync *out_syncs;
+};
+
/**
* __wait_for - magic wait macro
*
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index b912419027f7..e92998d39eaa 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -454,11 +454,12 @@ v3d_job_add_deps(struct drm_file *file_priv, struct v3d_job *job,
static int
v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
void **container, size_t size, void (*free)(struct kref *ref),
- u32 in_sync, enum v3d_queue queue)
+ u32 in_sync, struct v3d_submit_ext *se, enum v3d_queue queue)
{
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
struct v3d_job *job;
- int ret;
+ bool has_multisync = (se && se->in_sync_count);
+ int ret, i;
*container = kcalloc(1, size, GFP_KERNEL);
if (!*container) {
@@ -479,9 +480,28 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
if (ret)
goto fail;
- ret = v3d_job_add_deps(file_priv, job, in_sync, 0);
- if (ret)
- goto fail_job;
+ if (has_multisync) {
+ if (se->wait_stage == queue) {
+ struct drm_v3d_sem __user *handle = u64_to_user_ptr(se->in_syncs);
+
+ for (i = 0; i < se->in_sync_count; i++) {
+ struct drm_v3d_sem in;
+
+ ret = copy_from_user(&in, handle++, sizeof(in));
+ if (ret) {
+ DRM_DEBUG("Failed to copy wait dep handle.\n");
+ goto fail_job;
+ }
+ ret = v3d_job_add_deps(file_priv, job, in.handle, 0);
+ if (ret)
+ goto fail_job;
+ }
+ }
+ } else {
+ ret = v3d_job_add_deps(file_priv, job, in_sync, 0);
+ if (ret)
+ goto fail_job;
+ }
kref_init(&job->refcount);
@@ -514,6 +534,7 @@ v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
struct v3d_job *job,
struct ww_acquire_ctx *acquire_ctx,
u32 out_sync,
+ struct v3d_submit_ext *se,
struct dma_fence *done_fence)
{
struct drm_syncobj *sync_out;
@@ -528,6 +549,18 @@ v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
/* Update the return sync object for the job */
+ /* If multiples semaphores is supported */
+ if (se && se->out_sync_count) {
+ for (i = 0; i < se->out_sync_count; i++) {
+ drm_syncobj_replace_fence(se->out_syncs[i].syncobj,
+ done_fence);
+ drm_syncobj_put(se->out_syncs[i].syncobj);
+ }
+ kvfree(se->out_syncs);
+ return;
+ }
+
+ /* Single signal semaphore */
sync_out = drm_syncobj_find(file_priv, out_sync);
if (sync_out) {
drm_syncobj_replace_fence(sync_out, done_fence);
@@ -535,13 +568,107 @@ v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
}
}
+static void
+v3d_put_multisync_post_deps(struct v3d_submit_ext *se)
+{
+ unsigned int i;
+
+ for (i = 0; i < se->out_sync_count; i++)
+ drm_syncobj_put(se->out_syncs[i].syncobj);
+ kvfree(se->out_syncs);
+}
+
static int
-v3d_get_extensions(struct drm_file *file_priv, u64 ext_handles)
+v3d_get_multisync_post_deps(struct drm_file *file_priv,
+ struct v3d_submit_ext *se,
+ u32 count, u64 handles)
+{
+ struct drm_v3d_sem __user *post_deps;
+ int i, ret;
+
+ se->out_syncs = (struct v3d_submit_outsync *)
+ kvmalloc_array(count,
+ sizeof(struct v3d_submit_outsync),
+ GFP_KERNEL);
+ if (!se->out_syncs)
+ return -ENOMEM;
+
+ post_deps = u64_to_user_ptr(handles);
+
+ for (i = 0; i < count; i++) {
+ struct drm_v3d_sem out;
+
+ ret = copy_from_user(&out, post_deps++, sizeof(out));
+ if (ret) {
+ DRM_DEBUG("Failed to copy post dep handles\n");
+ goto fail;
+ }
+
+ se->out_syncs[i].syncobj = drm_syncobj_find(file_priv,
+ out.handle);
+ if (!se->out_syncs[i].syncobj) {
+ ret = -EINVAL;
+ goto fail;
+ }
+ }
+ se->out_sync_count = count;
+
+ return 0;
+
+fail:
+ for (i--; i >= 0; i--)
+ drm_syncobj_put(se->out_syncs[i].syncobj);
+ kvfree(se->out_syncs);
+
+ return ret;
+}
+
+/* Get data for multiple binary semaphores synchronization. Parse syncobj
+ * to be signaled when job completes (out_sync).
+ */
+static int
+v3d_get_multisync_submit_deps(struct drm_file *file_priv,
+ struct drm_v3d_extension __user *ext,
+ void *data)
+{
+ struct drm_v3d_multi_sync multisync;
+ struct v3d_submit_ext *se = data;
+ int ret;
+
+ ret = copy_from_user(&multisync, ext, sizeof(multisync));
+ if (ret)
+ return ret;
+
+ if (multisync.pad)
+ return -EINVAL;
+
+ ret = v3d_get_multisync_post_deps(file_priv, data, multisync.out_sync_count,
+ multisync.out_syncs);
+ if (ret)
+ return ret;
+
+ se->in_sync_count = multisync.in_sync_count;
+ se->in_syncs = multisync.in_syncs;
+
+ se->wait_stage = multisync.wait_stage;
+
+ return 0;
+}
+
+/* Whenever userspace sets ioctl extensions, parses data according to the
+ * extension id (name). By now, generic ioctl extensions is only used to
+ * support multiple binary semaphores (struct drm_v3d_multi_sync).
+ */
+static int
+v3d_get_extensions(struct drm_file *file_priv,
+ u64 ext_handles,
+ void *data)
{
struct drm_v3d_extension __user *user_ext;
+ int ret;
user_ext = u64_to_user_ptr(ext_handles);
- while(user_ext) {
+ while (user_ext) {
struct drm_v3d_extension ext;
if (copy_from_user(&ext, user_ext, sizeof(ext))) {
@@ -550,7 +677,11 @@ v3d_get_extensions(struct drm_file *file_priv, u64 ext_handles)
}
switch (ext.id) {
- case 0:
+ case DRM_V3D_EXT_ID_MULTI_SYNC:
+ ret = v3d_get_multisync_submit_deps(file_priv, user_ext, data);
+ if (ret)
+ return ret;
+ break;
default:
DRM_DEBUG_DRIVER("Unknown extension id: %d\n", ext.id);
return -EINVAL;
@@ -581,6 +712,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
struct v3d_dev *v3d = to_v3d_dev(dev);
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
struct drm_v3d_submit_cl *args = data;
+ struct v3d_submit_ext se = {0};
struct v3d_bin_job *bin = NULL;
struct v3d_render_job *render;
struct v3d_job *clean_job = NULL;
@@ -601,7 +733,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
}
if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
- ret = v3d_get_extensions(file_priv, args->extensions);
+ ret = v3d_get_extensions(file_priv, args->extensions, &se);
if (ret) {
DRM_DEBUG("Failed to get extensions.\n");
return ret;
@@ -609,7 +741,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
}
ret = v3d_job_init(v3d, file_priv, (void *)&render, sizeof(*render),
- v3d_render_job_free, args->in_sync_bcl, V3D_RENDER);
+ v3d_render_job_free, args->in_sync_bcl, &se, V3D_RENDER);
if (ret)
goto fail;
@@ -619,7 +751,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
if (args->bcl_start != args->bcl_end) {
ret = v3d_job_init(v3d, file_priv, (void *)&bin, sizeof(*bin),
- v3d_job_free, args->in_sync_bcl, V3D_BIN);
+ v3d_job_free, args->in_sync_bcl, &se, V3D_BIN);
if (ret)
goto fail;
@@ -633,7 +765,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
- v3d_job_free, 0, V3D_CACHE_CLEAN);
+ v3d_job_free, 0, 0, V3D_CACHE_CLEAN);
if (ret)
goto fail;
@@ -693,6 +825,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
last_job,
&acquire_ctx,
args->out_sync,
+ &se,
last_job->done_fence);
if (bin)
@@ -711,6 +844,7 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
v3d_job_cleanup((void *)bin);
v3d_job_cleanup((void *)render);
v3d_job_cleanup(clean_job);
+ v3d_put_multisync_post_deps(&se);
return ret;
}
@@ -730,6 +864,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
{
struct v3d_dev *v3d = to_v3d_dev(dev);
struct drm_v3d_submit_tfu *args = data;
+ struct v3d_submit_ext se = {0};
struct v3d_tfu_job *job;
struct ww_acquire_ctx acquire_ctx;
int ret = 0;
@@ -742,7 +877,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
}
if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
- ret = v3d_get_extensions(file_priv, args->extensions);
+ ret = v3d_get_extensions(file_priv, args->extensions, &se);
if (ret) {
DRM_DEBUG("Failed to get extensions.\n");
return ret;
@@ -750,7 +885,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
}
ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
- v3d_job_free, args->in_sync, V3D_TFU);
+ v3d_job_free, args->in_sync, &se, V3D_TFU);
if (ret)
goto fail;
@@ -798,6 +933,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
v3d_attach_fences_and_unlock_reservation(file_priv,
&job->base, &acquire_ctx,
args->out_sync,
+ &se,
job->base.done_fence);
v3d_job_put(&job->base);
@@ -806,6 +942,7 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
fail:
v3d_job_cleanup((void *)job);
+ v3d_put_multisync_post_deps(&se);
return ret;
}
@@ -826,8 +963,9 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
struct v3d_dev *v3d = to_v3d_dev(dev);
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
struct drm_v3d_submit_csd *args = data;
+ struct v3d_submit_ext se = {0};
struct v3d_csd_job *job;
- struct v3d_job *clean_job;
+ struct v3d_job *clean_job = NULL;
struct ww_acquire_ctx acquire_ctx;
int ret;
@@ -847,7 +985,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
}
if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
- ret = v3d_get_extensions(file_priv, args->extensions);
+ ret = v3d_get_extensions(file_priv, args->extensions, &se);
if (ret) {
DRM_DEBUG("Failed to get extensions.\n");
return ret;
@@ -855,12 +993,12 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
}
ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
- v3d_job_free, args->in_sync, V3D_CSD);
+ v3d_job_free, args->in_sync, &se, V3D_CSD);
if (ret)
goto fail;
ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
- v3d_job_free, 0, V3D_CACHE_CLEAN);
+ v3d_job_free, 0, 0, V3D_CACHE_CLEAN);
if (ret)
goto fail;
@@ -899,6 +1037,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
clean_job,
&acquire_ctx,
args->out_sync,
+ &se,
clean_job->done_fence);
v3d_job_put(&job->base);
@@ -913,6 +1052,7 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
fail:
v3d_job_cleanup((void *)job);
v3d_job_cleanup(clean_job);
+ v3d_put_multisync_post_deps(&se);
return ret;
}
diff --git a/include/uapi/drm/v3d_drm.h b/include/uapi/drm/v3d_drm.h
index 55b443ca6c0b..3dfc0af8756a 100644
--- a/include/uapi/drm/v3d_drm.h
+++ b/include/uapi/drm/v3d_drm.h
@@ -73,6 +73,53 @@ struct drm_v3d_extension {
__u32 flags; /* mbz */
};
+/* struct drm_v3d_sem - wait/signal semaphore
+ *
+ * If binary semaphore, it only takes syncobj handle and ignores flags and
+ * point fields. Point is defined for timeline syncobj feature.
+ */
+struct drm_v3d_sem {
+ __u32 handle; /* syncobj */
+ /* rsv below, for future uses */
+ __u32 flags;
+ __u64 point; /* for timeline sem support */
+ __u64 mbz[2]; /* must be zero, rsv */
+};
+
+/* Enum for each of the V3D queues. */
+enum v3d_queue {
+ V3D_BIN,
+ V3D_RENDER,
+ V3D_TFU,
+ V3D_CSD,
+ V3D_CACHE_CLEAN,
+};
+
+/**
+ * struct drm_v3d_multi_sync - ioctl extension to add support multiples
+ * syncobjs for commands submission.
+ *
+ * When an extension of DRM_V3D_EXT_ID_MULTI_SYNC id is defined, it points to
+ * this extension to define wait and signal dependencies, instead of single
+ * in/out sync entries on submitting commands. The field flags is used to
+ * determine the stage to set wait dependencies.
+ */
+struct drm_v3d_multi_sync {
+ struct drm_v3d_extension base;
+ /* Array of wait and signal semaphores */
+ __u64 in_syncs;
+ __u64 out_syncs;
+
+ /* Number of entries */
+ __u32 in_sync_count;
+ __u32 out_sync_count;
+
+ /* set the stage (v3d_queue) to sync */
+ __u32 wait_stage;
+
+ __u32 pad; /* mbz */
+};
+
/**
* struct drm_v3d_submit_cl - ioctl argument for submitting commands to the 3D
* engine.
@@ -228,6 +275,7 @@ enum drm_v3d_param {
DRM_V3D_PARAM_SUPPORTS_CSD,
DRM_V3D_PARAM_SUPPORTS_CACHE_FLUSH,
DRM_V3D_PARAM_SUPPORTS_PERFMON,
+ DRM_V3D_PARAM_SUPPORTS_MULTISYNC_EXT,
};
struct drm_v3d_get_param {
@@ -271,7 +319,6 @@ struct drm_v3d_submit_tfu {
/* Pointer to an array of ioctl extensions*/
__u64 extensions;
-
};
/* Submits a compute shader for dispatch. This job will block on any
--
2.30.2
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20210929/d9574591/attachment.sig>
More information about the dri-devel
mailing list