linux-kernel - [PATCH 0/9] drm/panthor: add devcoredump support

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Message-ID: <20250720000146.1405060-1-olvaffe@gmail.com>
Date: Sat, 19 Jul 2025 17:01:37 -0700
From: Chia-I Wu <olvaffe@...il.com>
To: Boris Brezillon <boris.brezillon@...labora.com>,
	Steven Price <steven.price@....com>,
	Liviu Dudau <liviu.dudau@....com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH 0/9] drm/panthor: add devcoredump support

This series adds devcoredump support to panthor.

This is written from scratch and is not based on the prior work[1]. The
main differences are

 - coredump triggers on all faulty/fatal/timeout events
 - state capture and state process are two separated steps, with
   GFP_NOWAIT being used for state capture
 - state capture captures both sw states and hw regs that are
   potentially interesting
 - coredump data is in text format, similar to what msm and xe do

A sample devcoredump can be found at
https://gitlab.freedesktop.org/panfrost/linux/-/issues/44

[1] https://lore.kernel.org/lkml/20240821143826.3720-1-daniel.almeida@collabora.com/

Chia-I Wu (9):
  drm/panthor: add devcoredump support
  drm/panthor: capture GPU state for devcoredump
  drm/panthor: capture GLB state for devcoredump
  drm/panthor: capture CSG state for devcoredump
  drm/panthor: capture CS state for devcoredump
  drm/panthor: capture AS state for devcoredump
  drm/panthor: capture VMA state for devcoredump
  drm/panthor: check bo offset alignment in vm bind
  drm/panthor: add DRM_PANTHOR_VM_BIND_OP_MAP_DUMPABLE

 drivers/gpu/drm/panthor/Makefile           |   2 +
 drivers/gpu/drm/panthor/panthor_coredump.c | 617 +++++++++++++++++++++
 drivers/gpu/drm/panthor/panthor_coredump.h | 178 ++++++
 drivers/gpu/drm/panthor/panthor_device.h   |   6 +
 drivers/gpu/drm/panthor/panthor_drv.c      |   3 +-
 drivers/gpu/drm/panthor/panthor_mmu.c      |  54 +-
 drivers/gpu/drm/panthor/panthor_mmu.h      |   4 +
 drivers/gpu/drm/panthor/panthor_regs.h     |   6 +
 drivers/gpu/drm/panthor/panthor_sched.c    | 104 ++++
 drivers/gpu/drm/panthor/panthor_sched.h    |  14 +
 include/uapi/drm/panthor_drm.h             |   7 +
 11 files changed, 989 insertions(+), 6 deletions(-)
 create mode 100644 drivers/gpu/drm/panthor/panthor_coredump.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_coredump.h

-- 
2.50.0.727.gbf7dc18ff4-goog