linux-kernel - [PATCH v2 0/4] Introduce Panfrost JM contexts

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Message-ID: <20250904001054.147465-1-adrian.larumbe@collabora.com>
Date: Thu,  4 Sep 2025 01:07:58 +0100
From: Adrián Larumbe <adrian.larumbe@...labora.com>
To: linux-kernel@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org,
	Steven Price <steven.price@....com>,
	Boris Brezillon <boris.brezillon@...labora.com>,
	kernel@...labora.com,
	Adrián Larumbe <adrian.larumbe@...labora.com>
Subject: [PATCH v2 0/4] Introduce Panfrost JM contexts

This patch series brings the notion of JM contexts into Panfrost.
UM will be able to create contexts, get a handle for them and attach
it to a job submission. Contexts describe basic HW resource assignment
to jobs, but at the moment that includes priorities only.

There's a MR for a Mesa commit series that makes use of these changes:
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37075

Changelog:

v2:
 - Core and L2 cache affinities are not longer part of the context uAPI
 - Individual JS priorites are no longer possible, and the same context
 priority is applied onto all the JS and scheduler entities.
 - Minor changes in the debugfs knob to reflect all the above.

Boris Brezillon (4):
  drm/panfrost: Introduce uAPI for JM context creation
  drm/panfrost: Introduce JM contexts for manging job resources
  drm/panfrost: Expose JM context IOCTLs to UM
  drm/panfrost: Display list of device JM contexts over debugfs

 drivers/gpu/drm/panfrost/panfrost_device.h |   4 +-
 drivers/gpu/drm/panfrost/panfrost_drv.c    | 147 ++++++++++++++-
 drivers/gpu/drm/panfrost/panfrost_job.c    | 203 +++++++++++++++++----
 drivers/gpu/drm/panfrost/panfrost_job.h    |  25 ++-
 include/uapi/drm/panfrost_drm.h            |  50 +++++
 5 files changed, 388 insertions(+), 41 deletions(-)


base-commit: a3ae3384be7704fcf41279f13190bd8a11204bea
--
2.50.0