[PATCH v9 00/10] New DRM accel driver for Rockchip's RKNN NPU

[Tomeu Vizoso]

This series adds a new driver for the NPU that Rockchip includes in its
newer SoCs, developed by them on the NVDLA base.

In its current form, it supports the specific NPU in the RK3588 SoC.

The userspace driver is part of Mesa and an initial draft can be found at:

https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29698

Signed-off-by: Tomeu Vizoso <tomeu@xxxxxxxxxxxxxxx>
---
Changes in v9:
- Rename the DT reference for the IOMMU for core 0
- Link to v8: https://lore.kernel.org/r/20250713-6-10-rocket-v8-0-64fa3115e910@xxxxxxxxxxxxxxx

Changes in v8:
- Kconfig improvements
- Removed notion of top core, all cores are equivalent now
- Explicitly allocate DMA addresses
- Sync BOs always in both directions
- UAPI improvements
- Simplified job scheduling
- Misc. style improvements
- Link to v7: https://lore.kernel.org/r/20250606-6-10-rocket-v7-0-dc16cfe6fe4e@xxxxxxxxxxxxxxx

Changes in v7:
- Actually enable process isolation by allocating its own IOMMU domain
  to each DRM client.
- Link to v6: https://lore.kernel.org/r/20250604-6-10-rocket-v6-0-237ac75ddb5e@xxxxxxxxxxxxxxx

Changes in v6:
- Make all cores depend on pclk and npu clocks
- Fix BO sync direction logic
- Misc. cleanups
- Link to v5: https://lore.kernel.org/r/20250520-6-10-rocket-v5-0-18c9ca0fcb3c@xxxxxxxxxxxxxxx

Changes in v5:
- Use bulk clk API
- Rename bindings file
- Syntax improvement to bindings
- Link to v4: https://lore.kernel.org/r/20250519-6-10-rocket-v4-0-d6dff6b4c0ae@xxxxxxxxxxxxxxx

Changes in v4:
- Several fixes to DT bindings.
- Link to v3: https://lore.kernel.org/r/20250516-6-10-rocket-v3-0-7051ac9225db@xxxxxxxxxxxxxxx

Changes in v3:
- Reference in the device tree only the register blocks that are
  actually used.
- Several style and robustness fixes suggested in the mailing list.
- Added patches from Nicolas Frattaroli that add support to the NPU for
  the Rock 5B board.
- Link to v2: https://lore.kernel.org/r/20250225-6-10-rocket-v2-0-d4dbcfafc141@xxxxxxxxxxxxxxx

Changes in v2:
- Drop patch adding the rk3588 compatible to rockchip-iommu (Sebastian Reichel)
- Drop patch adding support for multiple power domains to rockchip-iommu (Sebastian Reichel)
- Link to v1: https://lore.kernel.org/r/20240612-6-10-rocket-v1-0-060e48eea250@xxxxxxxxxxxxxxx

---
Nicolas Frattaroli (2):
      arm64: dts: rockchip: add pd_npu label for RK3588 power domains
      arm64: dts: rockchip: enable NPU on ROCK 5B

Tomeu Vizoso (8):
      accel/rocket: Add registers header
      accel/rocket: Add a new driver for Rockchip's NPU
      accel/rocket: Add IOCTL for BO creation
      accel/rocket: Add job submission IOCTL
      accel/rocket: Add IOCTLs for synchronizing memory accesses
      dt-bindings: npu: rockchip,rknn: Add bindings
      arm64: dts: rockchip: Add nodes for NPU and its MMU to rk3588-base
      arm64: dts: rockchip: Enable the NPU on quartzpro64

 Documentation/accel/index.rst                      |    1 +
 Documentation/accel/rocket/index.rst               |   19 +
 .../bindings/npu/rockchip,rk3588-rknn-core.yaml    |  112 +
 MAINTAINERS                                        |   10 +
 arch/arm64/boot/dts/rockchip/rk3588-base.dtsi      |   93 +-
 .../arm64/boot/dts/rockchip/rk3588-quartzpro64.dts |   30 +
 arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dtsi   |   57 +
 drivers/accel/Kconfig                              |    1 +
 drivers/accel/Makefile                             |    1 +
 drivers/accel/rocket/Kconfig                       |   24 +
 drivers/accel/rocket/Makefile                      |   10 +
 drivers/accel/rocket/rocket_core.c                 |  110 +
 drivers/accel/rocket/rocket_core.h                 |   64 +
 drivers/accel/rocket/rocket_device.c               |   60 +
 drivers/accel/rocket/rocket_device.h               |   30 +
 drivers/accel/rocket/rocket_drv.c                  |  290 ++
 drivers/accel/rocket/rocket_drv.h                  |   30 +
 drivers/accel/rocket/rocket_gem.c                  |  181 +
 drivers/accel/rocket/rocket_gem.h                  |   34 +
 drivers/accel/rocket/rocket_job.c                  |  636 +++
 drivers/accel/rocket/rocket_job.h                  |   52 +
 drivers/accel/rocket/rocket_registers.h            | 4404 ++++++++++++++++++++
 include/uapi/drm/rocket_accel.h                    |  142 +
 23 files changed, 6390 insertions(+), 1 deletion(-)
---
base-commit: 156faa3ffe21347203b35a3edb6d2bcb663f429b
change-id: 20240612-6-10-rocket-9316defc14c7

Best regards,
-- 
Tomeu Vizoso <tomeu@xxxxxxxxxxxxxxx>