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drm/v3d: Convert submit helpers to operate on struct v3d_submit

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Generalize the submission helpers so they act on a whole struct v3d_submit
(the entire job chain) rather than on individual jobs and a drm_exec. This
lets a submission of several chained jobs be locked, fenced, and finalized
as a single unit, and is the groundwork for collapsing the indirect CSD
path into one chain.

The following helpers were generalized:

  - v3d_lookup_bos()
  - v3d_lock_bo_reservations() (renamed to v3d_submit_lock_reservations()):
  - v3d_attach_fences_and_unlock_reservation()
  - v3d_setup_csd_jobs_and_bos()

Now, the locking helper now iterates over all jobs and locks the union of
their BOs under one DRM exec, using DRM_EXEC_IGNORE_DUPLICATES to tolerate
shared BO references. The fence-attach helper similarly walks every job
and attaches the chain's last fence to all touched BOs.

Also, v3d_submit_jobs() becomes the single submit-and-finalize entry
point and callers no longer need to open-code fence attachment,
reservation unlocking, etc.

Update CL/TFU/CSD/CPU ioctls to use the new helper signatures. The CPU
ioctl still uses two struct v3d_submit instances (one for the CPU job,
one for the indirect CSD jobs) and keeps its manual two-pass fence-attach
flow. Converting the indirect CSD path into the unified chain is done in
the next commit.

No functional change.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://patch.msgid.link/20260604-v3d-sched-misc-fixes-v4-8-c068f5bf5ccf@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
This commit is contained in:
Maíra Canal
2026-06-04 17:32:21 -03:00
parent 719ea1f039
commit f59d986943
1 changed files with 128 additions and 212 deletions
Download Patch File Download Diff File Expand all files Collapse all files

340
drivers/gpu/drm/v3d/v3d_submit.c
View File

@@ -20,32 +20,51 @@
* to v3d, so we don't attach dma-buf fences to them.
*/
static int
v3d_lock_bo_reservations(struct v3d_job *job, struct drm_exec *exec)
v3d_submit_lock_reservations(struct v3d_submit *submit)
{
int i, ret;
int i, j, ret;
drm_exec_init(exec, DRM_EXEC_INTERRUPTIBLE_WAIT, job->bo_count);
drm_exec_until_all_locked(exec) {
ret = drm_exec_prepare_array(exec, job->bo, job->bo_count, 1);
}
drm_exec_init(&submit->exec,
DRM_EXEC_INTERRUPTIBLE_WAIT | DRM_EXEC_IGNORE_DUPLICATES, 0);
drm_exec_until_all_locked(&submit->exec) {
for (i = 0; i < submit->job_count; i++) {
struct v3d_job *job = submit->jobs[i];
if (ret)
goto fail;
for (i = 0; i < job->bo_count; i++) {
ret = drm_sched_job_add_implicit_dependencies(&job->base,
job->bo[i], true);
ret = drm_exec_prepare_array(&submit->exec, job->bo,
job->bo_count, 1);
if (ret)
break;
}
drm_exec_retry_on_contention(&submit->exec);
if (ret)
goto fail;
}
for (i = 0; i < submit->job_count; i++) {
struct v3d_job *job = submit->jobs[i];
for (j = 0; j < job->bo_count; j++) {
ret = drm_sched_job_add_implicit_dependencies(&job->base,
job->bo[j],
true);
if (ret)
goto fail;
}
}
return 0;
fail:
drm_exec_fini(exec);
drm_exec_fini(&submit->exec);
return ret;
}
static void
v3d_submit_unlock_reservations(struct v3d_submit *submit)
{
drm_exec_fini(&submit->exec);
}
/**
* v3d_lookup_bos() - Sets up job->bo[] with the GEM objects
* referenced by the job.
@@ -63,25 +82,23 @@ v3d_lock_bo_reservations(struct v3d_job *job, struct drm_exec *exec)
* failure, because that will happen at `v3d_job_free()`.
*/
static int
v3d_lookup_bos(struct drm_device *dev,
struct drm_file *file_priv,
struct v3d_job *job,
u64 bo_handles,
u32 bo_count)
v3d_lookup_bos(struct v3d_submit *submit, u64 bo_handles, u32 bo_count)
{
job->bo_count = bo_count;
struct v3d_job *last_job = submit->jobs[submit->job_count - 1];
if (!job->bo_count) {
last_job->bo_count = bo_count;
if (!last_job->bo_count) {
/* See comment on bo_index for why we have to check
* this.
*/
drm_warn(dev, "Rendering requires BOs\n");
drm_warn(&submit->v3d->drm, "Rendering requires BOs\n");
return -EINVAL;
}
return drm_gem_objects_lookup(file_priv,
return drm_gem_objects_lookup(submit->file_priv,
(void __user *)(uintptr_t)bo_handles,
job->bo_count, &job->bo);
last_job->bo_count, &last_job->bo);
}
static void
@@ -160,25 +177,6 @@ void v3d_job_put(struct v3d_job *job)
kref_put(&job->refcount, job->free);
}
static int
v3d_job_allocate(struct v3d_dev *v3d, void **container, size_t size)
{
*container = kcalloc(1, size, GFP_KERNEL);
if (!*container) {
drm_err(&v3d->drm, "Cannot allocate memory for V3D job.\n");
return -ENOMEM;
}
return 0;
}
static void
v3d_job_deallocate(void **container)
{
kfree(*container);
*container = NULL;
}
static int
v3d_job_add_syncobjs(struct v3d_job *job, struct drm_file *file_priv,
u32 in_sync, struct v3d_submit_ext *se)
@@ -219,48 +217,6 @@ v3d_job_add_syncobjs(struct v3d_job *job, struct drm_file *file_priv,
return 0;
}
static int
v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
struct v3d_job *job, void (*free)(struct kref *ref),
u32 in_sync, struct v3d_submit_ext *se, enum v3d_queue queue)
{
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
int ret;
job->v3d = v3d;
job->free = free;
job->queue = queue;
job->file_priv = v3d_priv;
ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
1, v3d_priv, file_priv->client_id);
if (ret)
return ret;
ret = v3d_job_add_syncobjs(job, file_priv, in_sync, se);
if (ret)
goto fail_job_init;
/* CPU jobs don't require hardware resources */
if (queue != V3D_CPU) {
ret = v3d_pm_runtime_get(v3d);
if (ret)
goto fail_job_init;
job->has_pm_ref = true;
}
kref_init(&job->refcount);
job->client_stats = v3d_stats_get(v3d_priv->stats[queue]);
job->global_stats = v3d_stats_get(v3d->queue[queue].stats);
return 0;
fail_job_init:
drm_sched_job_cleanup(&job->base);
return ret;
}
static const struct {
size_t size;
void (*free)(struct kref *ref);
@@ -363,31 +319,34 @@ v3d_attach_perfmon_to_jobs(struct v3d_submit *submit, u32 perfmon_id)
}
static void
v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
struct v3d_job *job,
struct drm_exec *exec,
u32 out_sync,
struct v3d_submit_ext *se,
struct dma_fence *done_fence)
v3d_attach_fences_and_unlock_reservation(struct v3d_submit *submit,
u32 out_sync, struct v3d_submit_ext *se)
{
struct drm_syncobj *sync_out;
bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
int i;
struct v3d_job *last_job = submit->jobs[submit->job_count - 1];
struct drm_syncobj *sync_out;
for (i = 0; i < job->bo_count; i++) {
/* XXX: Use shared fences for read-only objects. */
dma_resv_add_fence(job->bo[i]->resv, job->done_fence,
DMA_RESV_USAGE_WRITE);
/* The submission's last fence covers the entire submission. Attach it
* to every BO touched by any job in the submission.
*/
for (int i = 0; i < submit->job_count; i++) {
struct v3d_job *job = submit->jobs[i];
for (int j = 0; j < job->bo_count; j++) {
/* XXX: Use shared fences for read-only objects. */
dma_resv_add_fence(job->bo[j]->resv, last_job->done_fence,
DMA_RESV_USAGE_WRITE);
}
}
drm_exec_fini(exec);
v3d_submit_unlock_reservations(submit);
/* Update the return sync object for the job */
/* If it only supports a single signal semaphore*/
if (!has_multisync) {
sync_out = drm_syncobj_find(file_priv, out_sync);
sync_out = drm_syncobj_find(submit->file_priv, out_sync);
if (sync_out) {
drm_syncobj_replace_fence(sync_out, done_fence);
drm_syncobj_replace_fence(sync_out, last_job->done_fence);
drm_syncobj_put(sync_out);
}
return;
@@ -395,9 +354,9 @@ v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
/* If multiple semaphores extension is supported */
if (se->out_sync_count) {
for (i = 0; i < se->out_sync_count; i++) {
for (int i = 0; i < se->out_sync_count; i++) {
drm_syncobj_replace_fence(se->out_syncs[i].syncobj,
done_fence);
last_job->done_fence);
drm_syncobj_put(se->out_syncs[i].syncobj);
}
kvfree(se->out_syncs);
@@ -418,7 +377,8 @@ v3d_push_job(struct v3d_job *job)
}
static int
v3d_submit_jobs(struct v3d_submit *submit)
v3d_submit_jobs(struct v3d_submit *submit, u32 out_sync,
struct v3d_submit_ext *se)
{
struct v3d_dev *v3d = submit->v3d;
int ret = 0;
@@ -438,52 +398,42 @@ v3d_submit_jobs(struct v3d_submit *submit)
}
}
mutex_unlock(&v3d->sched_lock);
v3d_attach_fences_and_unlock_reservation(submit, out_sync, se);
v3d_submit_put_jobs(submit);
return 0;
err:
mutex_unlock(&v3d->sched_lock);
return ret;
}
static int
v3d_setup_csd_jobs_and_bos(struct drm_file *file_priv,
struct v3d_dev *v3d,
v3d_setup_csd_jobs_and_bos(struct v3d_submit *submit,
struct drm_v3d_submit_csd *args,
struct v3d_csd_job **job,
struct v3d_job **clean_job,
struct v3d_submit_ext *se,
struct drm_exec *exec)
struct v3d_submit_ext *se)
{
struct v3d_csd_job *job;
struct v3d_job *clean_job;
int ret;
ret = v3d_job_allocate(v3d, (void *)job, sizeof(**job));
job = (struct v3d_csd_job *)v3d_submit_add_job(submit, V3D_CSD);
if (IS_ERR(job))
return PTR_ERR(job);
ret = v3d_job_add_syncobjs(&job->base, submit->file_priv, args->in_sync, se);
if (ret)
return ret;
ret = v3d_job_init(v3d, file_priv, &(*job)->base,
v3d_job_free, args->in_sync, se, V3D_CSD);
if (ret) {
v3d_job_deallocate((void *)job);
return ret;
}
job->args = *args;
ret = v3d_job_allocate(v3d, (void *)clean_job, sizeof(**clean_job));
if (ret)
return ret;
clean_job = v3d_submit_add_job(submit, V3D_CACHE_CLEAN);
if (IS_ERR(clean_job))
return PTR_ERR(clean_job);
ret = v3d_job_init(v3d, file_priv, *clean_job,
v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
if (ret) {
v3d_job_deallocate((void *)clean_job);
return ret;
}
(*job)->args = *args;
ret = v3d_lookup_bos(&v3d->drm, file_priv, *clean_job,
args->bo_handles, args->bo_handle_count);
if (ret)
return ret;
return v3d_lock_bo_reservations(*clean_job, exec);
return v3d_lookup_bos(submit, args->bo_handles, args->bo_handle_count);
}
static void
@@ -1123,33 +1073,22 @@ v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
if (ret)
goto fail;
ret = v3d_lookup_bos(dev, file_priv,
submit.jobs[submit.job_count - 1],
args->bo_handles, args->bo_handle_count);
ret = v3d_lookup_bos(&submit, args->bo_handles, args->bo_handle_count);
if (ret)
goto fail;
ret = v3d_lock_bo_reservations(submit.jobs[submit.job_count - 1],
&submit.exec);
ret = v3d_submit_lock_reservations(&submit);
if (ret)
goto fail;
ret = v3d_submit_jobs(&submit);
ret = v3d_submit_jobs(&submit, args->out_sync, &se);
if (ret)
goto fail_unreserve;
v3d_attach_fences_and_unlock_reservation(file_priv,
submit.jobs[submit.job_count - 1],
&submit.exec,
args->out_sync, &se,
submit.jobs[submit.job_count - 1]->done_fence);
v3d_submit_put_jobs(&submit);
return 0;
fail_unreserve:
drm_exec_fini(&submit.exec);
v3d_submit_unlock_reservations(&submit);
fail:
v3d_submit_cleanup_jobs(&submit);
v3d_put_multisync_post_deps(&se);
@@ -1228,25 +1167,18 @@ v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
job->base.bo[job->base.bo_count] = bo;
}
ret = v3d_lock_bo_reservations(&job->base, &submit.exec);
ret = v3d_submit_lock_reservations(&submit);
if (ret)
goto fail;
ret = v3d_submit_jobs(&submit);
ret = v3d_submit_jobs(&submit, args->out_sync, &se);
if (ret)
goto fail_unreserve;
v3d_attach_fences_and_unlock_reservation(file_priv,
&job->base, &submit.exec,
args->out_sync, &se,
job->base.done_fence);
v3d_submit_put_jobs(&submit);
return 0;
fail_unreserve:
drm_exec_fini(&submit.exec);
v3d_submit_unlock_reservations(&submit);
fail:
v3d_submit_cleanup_jobs(&submit);
v3d_put_multisync_post_deps(&se);
@@ -1270,8 +1202,6 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
struct v3d_submit submit = { .v3d = to_v3d_dev(dev), .file_priv = file_priv };
struct drm_v3d_submit_csd *args = data;
struct v3d_submit_ext se = {0};
struct v3d_csd_job *job = NULL;
struct v3d_job *clean_job = NULL;
int ret;
trace_v3d_submit_csd_ioctl(dev, args->cfg[5], args->cfg[6]);
@@ -1297,34 +1227,26 @@ v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
}
}
ret = v3d_setup_csd_jobs_and_bos(file_priv, submit.v3d, args,
&job, &clean_job, &se, &submit.exec);
ret = v3d_setup_csd_jobs_and_bos(&submit, args, &se);
if (ret)
goto fail;
submit.jobs[submit.job_count++] = &job->base;
submit.jobs[submit.job_count++] = clean_job;
ret = v3d_attach_perfmon_to_jobs(&submit, args->perfmon_id);
if (ret)
goto fail_unreserve;
goto fail;
ret = v3d_submit_jobs(&submit);
ret = v3d_submit_lock_reservations(&submit);
if (ret)
goto fail;
ret = v3d_submit_jobs(&submit, args->out_sync, &se);
if (ret)
goto fail_unreserve;
v3d_attach_fences_and_unlock_reservation(file_priv,
clean_job,
&submit.exec,
args->out_sync, &se,
clean_job->done_fence);
v3d_submit_put_jobs(&submit);
return 0;
fail_unreserve:
drm_exec_fini(&submit.exec);
v3d_submit_unlock_reservations(&submit);
fail:
v3d_submit_cleanup_jobs(&submit);
v3d_put_multisync_post_deps(&se);
@@ -1355,13 +1277,14 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct v3d_dev *v3d = to_v3d_dev(dev);
struct v3d_submit submit = { .v3d = to_v3d_dev(dev), .file_priv = file_priv };
struct v3d_submit indirect_submit = { .v3d = to_v3d_dev(dev), .file_priv = file_priv };
struct drm_v3d_submit_cpu *args = data;
struct v3d_submit_ext se = {0};
struct v3d_submit_ext *out_se = NULL;
struct v3d_cpu_job *cpu_job = NULL;
struct v3d_csd_job *csd_job = NULL;
struct v3d_job *clean_job = NULL;
struct drm_exec exec;
int ret;
if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
@@ -1369,9 +1292,9 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
return -EINVAL;
}
ret = v3d_job_allocate(v3d, (void *)&cpu_job, sizeof(*cpu_job));
if (ret)
return ret;
cpu_job = (struct v3d_cpu_job *)v3d_submit_add_job(&submit, V3D_CPU);
if (IS_ERR(cpu_job))
return PTR_ERR(cpu_job);
if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
ret = v3d_get_extensions(file_priv, args->extensions, &se, cpu_job);
@@ -1396,34 +1319,35 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
trace_v3d_submit_cpu_ioctl(&v3d->drm, cpu_job->job_type);
ret = v3d_job_init(v3d, file_priv, &cpu_job->base,
v3d_cpu_job_free, 0, &se, V3D_CPU);
if (ret) {
v3d_job_deallocate((void *)&cpu_job);
ret = v3d_job_add_syncobjs(&cpu_job->base, file_priv, 0, &se);
if (ret)
goto fail;
}
if (cpu_job->job_type == V3D_CPU_JOB_TYPE_INDIRECT_CSD) {
ret = v3d_setup_csd_jobs_and_bos(file_priv, v3d,
ret = v3d_setup_csd_jobs_and_bos(&indirect_submit,
&cpu_job->indirect_csd.args,
&cpu_job->indirect_csd.job,
&cpu_job->indirect_csd.clean_job,
NULL,
&cpu_job->indirect_csd.exec);
NULL);
if (ret)
goto fail;
ret = v3d_submit_lock_reservations(&indirect_submit);
if (ret)
goto fail;
cpu_job->indirect_csd.job = container_of(indirect_submit.jobs[0],
struct v3d_csd_job, base);
cpu_job->indirect_csd.clean_job = indirect_submit.jobs[1];
clean_job = cpu_job->indirect_csd.clean_job;
csd_job = cpu_job->indirect_csd.job;
}
clean_job = cpu_job->indirect_csd.clean_job;
csd_job = cpu_job->indirect_csd.job;
if (args->bo_handle_count) {
ret = v3d_lookup_bos(dev, file_priv, &cpu_job->base,
args->bo_handles, args->bo_handle_count);
ret = v3d_lookup_bos(&submit, args->bo_handles, args->bo_handle_count);
if (ret)
goto fail;
ret = v3d_lock_bo_reservations(&cpu_job->base, &exec);
ret = v3d_submit_lock_reservations(&submit);
if (ret)
goto fail;
}
@@ -1455,36 +1379,28 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
out_se = (cpu_job->job_type == V3D_CPU_JOB_TYPE_INDIRECT_CSD) ? NULL : &se;
v3d_attach_fences_and_unlock_reservation(file_priv,
&cpu_job->base,
&exec, 0,
out_se, cpu_job->base.done_fence);
v3d_attach_fences_and_unlock_reservation(&submit, 0, out_se);
switch (cpu_job->job_type) {
case V3D_CPU_JOB_TYPE_INDIRECT_CSD:
v3d_attach_fences_and_unlock_reservation(file_priv,
clean_job,
&cpu_job->indirect_csd.exec,
0, &se, clean_job->done_fence);
v3d_attach_fences_and_unlock_reservation(&indirect_submit, 0, &se);
break;
default:
break;
}
v3d_job_put(&cpu_job->base);
v3d_job_put(&csd_job->base);
v3d_job_put(clean_job);
v3d_submit_put_jobs(&submit);
v3d_submit_put_jobs(&indirect_submit);
return 0;
fail_unreserve:
mutex_unlock(&v3d->sched_lock);
drm_exec_fini(&exec);
drm_exec_fini(&cpu_job->indirect_csd.exec);
v3d_submit_unlock_reservations(&submit);
v3d_submit_unlock_reservations(&indirect_submit);
fail:
v3d_job_cleanup((void *)cpu_job);
v3d_job_cleanup((void *)csd_job);
v3d_job_cleanup(clean_job);
v3d_submit_cleanup_jobs(&submit);
v3d_submit_cleanup_jobs(&indirect_submit);
v3d_put_multisync_post_deps(&se);
return ret;