[PATCH v6 00/14] drm: Add a driver for CSF-based Mali GPUs

[Boris Brezillon]

Hello,

Basically v5 with 3 extra fixes (bugs found while working with a
32-bit build), and new R-b/A-b collected. I kept the previous
R-b because the changes are pretty trivial.

A branch based on drm-misc-next is available here[1], and here is
another one [2] containing extra patches to have things working on
rk3588. The CSF firmware binary is now merged in linux-firmware [3].

The mesa MR adding v10 support on top of panthor is available here [4].

Here is a non-exhaustive changelog, check each commit for a detailed
changelog.

v6:
- Limit IN_VA_BITS on 32-bit builds
- Make sure MMU faults report don't cause a NULL pointer deref when
  the scheduler is not yet initialized (can happen if the FW accesses
  a region that's not mapped in AS0)
- Report the actual BO size (page-aligned) to userspace, as stated in
  the uAPI spec
- Various minor cosmetic changes

v5:
- No fundamental changes in this v5
- Various bug fixes (see the per-commit changelogs)
- Various docs/typos fixes

v4:
- Fix various bugs in the VM logic
- Address comments from Steven, Liviu, Ketil and Chris
- Move tiler OOM handling out of the scheduler interrupt handling path
  so we can properly recover when the system runs out of memory, and
  panthor is blocked trying to allocate heap chunks
- Rework the heap locking to support concurrent chunk allocation. Not
  sure if this is supposed to happen, but we need to be robust against
  userspace passing the same heap context to two scheduling groups.
  Wasn't needed before the tiler_oom rework, because heap allocation
  base serialized by the scheduler lock.
- Make kernel BO destruction robust to NULL/ERR pointers

v3;
- Quite a few changes at the MMU/sched level to make the fix some
  race conditions and deadlocks
- Addition of the a sync-only VM_BIND operation (to support
  vkQueueSparseBind with zero commands).
- Addition of a VM_GET_STATE ioctl

[1]https://gitlab.freedesktop.org/panfrost/linux/-/tree/panthor-v5
[2]https://gitlab.freedesktop.org/panfrost/linux/-/tree/panthor-v5+rk3588

*** BLURB HERE ***

Boris Brezillon (13):
  drm/panthor: Add uAPI
  drm/panthor: Add GPU register definitions
  drm/panthor: Add the device logical block
  drm/panthor: Add the GPU logical block
  drm/panthor: Add GEM logical block
  drm/panthor: Add the devfreq logical block
  drm/panthor: Add the MMU/VM logical block
  drm/panthor: Add the FW logical block
  drm/panthor: Add the heap logical block
  drm/panthor: Add the scheduler logical block
  drm/panthor: Add the driver frontend block
  drm/panthor: Allow driver compilation
  drm/panthor: Add an entry to MAINTAINERS

Liviu Dudau (1):
  dt-bindings: gpu: mali-valhall-csf: Add support for Arm Mali CSF GPUs

 .../bindings/gpu/arm,mali-valhall-csf.yaml    |  147 +
 Documentation/gpu/driver-uapi.rst             |    5 +
 MAINTAINERS                                   |   11 +
 drivers/gpu/drm/Kconfig                       |    2 +
 drivers/gpu/drm/Makefile                      |    1 +
 drivers/gpu/drm/panthor/Kconfig               |   23 +
 drivers/gpu/drm/panthor/Makefile              |   14 +
 drivers/gpu/drm/panthor/panthor_devfreq.c     |  283 ++
 drivers/gpu/drm/panthor/panthor_devfreq.h     |   21 +
 drivers/gpu/drm/panthor/panthor_device.c      |  549 +++
 drivers/gpu/drm/panthor/panthor_device.h      |  394 ++
 drivers/gpu/drm/panthor/panthor_drv.c         | 1473 +++++++
 drivers/gpu/drm/panthor/panthor_fw.c          | 1362 +++++++
 drivers/gpu/drm/panthor/panthor_fw.h          |  503 +++
 drivers/gpu/drm/panthor/panthor_gem.c         |  230 ++
 drivers/gpu/drm/panthor/panthor_gem.h         |  142 +
 drivers/gpu/drm/panthor/panthor_gpu.c         |  482 +++
 drivers/gpu/drm/panthor/panthor_gpu.h         |   52 +
 drivers/gpu/drm/panthor/panthor_heap.c        |  597 +++
 drivers/gpu/drm/panthor/panthor_heap.h        |   39 +
 drivers/gpu/drm/panthor/panthor_mmu.c         | 2768 +++++++++++++
 drivers/gpu/drm/panthor/panthor_mmu.h         |  102 +
 drivers/gpu/drm/panthor/panthor_regs.h        |  239 ++
 drivers/gpu/drm/panthor/panthor_sched.c       | 3502 +++++++++++++++++
 drivers/gpu/drm/panthor/panthor_sched.h       |   50 +
 include/uapi/drm/panthor_drm.h                |  945 +++++
 26 files changed, 13936 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpu/arm,mali-valhall-csf.yaml
 create mode 100644 drivers/gpu/drm/panthor/Kconfig
 create mode 100644 drivers/gpu/drm/panthor/Makefile
 create mode 100644 drivers/gpu/drm/panthor/panthor_devfreq.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_devfreq.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_device.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_device.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_drv.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_fw.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_fw.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_gem.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_gem.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_gpu.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_gpu.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_heap.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_heap.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_mmu.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_mmu.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_regs.h
 create mode 100644 drivers/gpu/drm/panthor/panthor_sched.c
 create mode 100644 drivers/gpu/drm/panthor/panthor_sched.h
 create mode 100644 include/uapi/drm/panthor_drm.h

-- 
2.43.0