drm/v3d: Introduce struct v3d_submit and convert CL/TFU/CSD ioctls

As the V3D driver grew with time, different types of submission were added
and the submission code grew more complex, but the driver stuck with the
same abstractions.

Nowadays, the submission ioctls don't submit a single job, but a
chain of jobs:

1. v3d_submit_cl_ioctl() submits a BIN job (optional), RENDER job
   (mandatory), and a CLEAN_CACHE job (optional).
2. v3d_submit_csd_ioctl() submits a CSD, and a CLEAN_CACHE job.
3. v3d_submit_tfu_ioctl() submits a TFU job.

Therefore, each ioctl submits a chain of jobs in which each job depends on
the previous one. However, this concept is not well represented in software
at the moment.

To address this, introduce a new concept: the struct v3d_submit, which
groups the submission state and represents the submission chain formed by
an ordered array of jobs.

Add new helpers to allocate, add jobs to the chain and submit jobs to
the scheduler, all based on the new struct. Convert v3d_submit_cl_ioctl(),
v3d_submit_tfu_ioctl() and v3d_submit_csd_ioctl() to the new pattern. Each
ioctl now follows the same flow: add jobs -> attach perfmon -> lookup BOs
-> lock reservations -> submit chain -> attach fences -> put jobs.

The CPU ioctl is left on the old helpers for now; its indirect CSD path
requires some restructuring that will be addressed in the next few
commits.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://patch.msgid.link/20260604-v3d-sched-misc-fixes-v4-6-c068f5bf5ccf@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>

0 files changed, 0 insertions, 0 deletions