Hi Am 20.10.22 um 19:53 schrieb Maciej Kwapulinski:
Dear kernel maintainers, This submission is a kernel driver to support Intel(R) Gaussian & Neural Accelerator (Intel(R) GNA). Intel(R) GNA is a PCI-based neural co-processor available on multiple Intel platforms. AI developers and users can offload continuous inference workloads to an Intel(R) GNA device in order to free processor resources and save power. Noise reduction and speech recognition are the examples of the workloads Intel(R) GNA deals with while its usage is not limited to the two. For a list of processors equipped with Intel(R) GNA device, please refer to this link: https://docs.openvinotoolkit.org/latest/openvino_docs_IE_DG_supported_plugins_GNA.html We think contributing this driver to the upstream kernel project is the best way for developers and users to get the latest Intel(R) GNA support in a Linux kernel, through the mainline to any Linux distributions installed on their systems. Upstreaming also enables contribution from developers around the world to the driver once it is merged. The driver works with Intel(R) libraries in user space. The Intel(R) driver exposes a few IOCTL interfaces for use by libraries in user space. The libraries are open sourced and are available at: https://github.com/intel/gna
This driver appears to be a candidate for the accel subsystem that has been proposed here. [1] At a minimum, you'd now get standardized file names. Longterm, I'd expect dedicated helpers for accel devices.
Best regards Thomas[1] https://lore.kernel.org/dri-devel/Y1VMX9J44FJZp0dl@xxxxxxxxx/T/#m977efaeb39fc5be581ae05e1dccbd896546db943
---
Changelogs:
v1->v2:
- driver's new layout:
- driver name: gna -> intel_gna
- module name: gna -> intel_gna
- device file name: /dev/gnaN -> /dev/intel_gnaN
- driver's source directory: drivers/misc/gna/ -> drivers/misc/intel/gna/
- UAPI: include/uapi/misc/gna.h -> include/uapi/misc/intel/gna.h
- DOC: Documentation/misc-devices/gna.rst ->
Documentation/misc-devices/intel/gna.rst
- 'MISC' device framework used
- fixes throughout GNA device's PCI management
- header files' includes and forward declarations cleanup
- ISR made static
- unused comments cleanup
- "_priv_" segment removed from function names
- tested: v5.11-rc3 -> v5.11
- number of other/minor fixes
v2->v3:
- PCI glue driver part split.
- GNA probe fail path made fully implicit.
- 'recovery_timeout' module parameter present under 'CONFIG_DEBUG_INTEL_GNA' flag only.
- build for X86_32 enabled.
- module initialization through 'module_pci_driver()'.
- gna_priv->file_list cleanup.
- 'gna_' prefix removed from source files' names.
- power management handling added.
- number of other/minor fixes
- tests performed on kernel v5.12
v3->v4:
- GNA driver adapted to DRM framework (+userspace GNA library adapted to use the driver)
- drm_managed (drmm) feature is used for objects lifetime management
- GNA memory objects use ~drm_gem_shmem_object~ objects as a base
- patches reorganized to meet symbols' usage with their declarations/definitions
- 'recovery_timeout' module parameter removed
- number of other/minor fixes from v3 review
- tests performed on kernel v6.0
v4->v5:
- indentation fixed in drivers/gpu/drm/gna/Kconfig
Maciej Kwapulinski (4):
gna: add PCI driver module
gna: add GNA DRM device
gna: add GNA_GEM_NEW and GNA_GEM_FREE ioctls
gna: add power management
Tomasz Jankowski (6):
gna: read hardware info
gna: initialize MMU
gna: add GNA_GET_PARAMETER ioctl
gna: add GNA_COMPUTE ioctl
gna: add GNA_WAIT ioctl
gna: add open and close operations on GNA device
Documentation/gpu/drivers.rst | 1 +
Documentation/gpu/gna.rst | 64 +++++
MAINTAINERS | 7 +
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/gna/Kbuild | 5 +
drivers/gpu/drm/gna/Kconfig | 15 +
drivers/gpu/drm/gna/gna_device.c | 317 +++++++++++++++++++++
drivers/gpu/drm/gna/gna_device.h | 114 ++++++++
drivers/gpu/drm/gna/gna_gem.h | 22 ++
drivers/gpu/drm/gna/gna_hw.c | 110 ++++++++
drivers/gpu/drm/gna/gna_hw.h | 107 ++++++++
drivers/gpu/drm/gna/gna_ioctl.c | 208 ++++++++++++++
drivers/gpu/drm/gna/gna_mem.c | 249 +++++++++++++++++
drivers/gpu/drm/gna/gna_mem.h | 58 ++++
drivers/gpu/drm/gna/gna_pci.c | 148 ++++++++++
drivers/gpu/drm/gna/gna_pci.h | 12 +
drivers/gpu/drm/gna/gna_request.c | 441 ++++++++++++++++++++++++++++++
drivers/gpu/drm/gna/gna_request.h | 64 +++++
drivers/gpu/drm/gna/gna_score.c | 222 +++++++++++++++
drivers/gpu/drm/gna/gna_score.h | 11 +
include/uapi/drm/gna_drm.h | 169 ++++++++++++
22 files changed, 2347 insertions(+)
create mode 100644 Documentation/gpu/gna.rst
create mode 100644 drivers/gpu/drm/gna/Kbuild
create mode 100644 drivers/gpu/drm/gna/Kconfig
create mode 100644 drivers/gpu/drm/gna/gna_device.c
create mode 100644 drivers/gpu/drm/gna/gna_device.h
create mode 100644 drivers/gpu/drm/gna/gna_gem.h
create mode 100644 drivers/gpu/drm/gna/gna_hw.c
create mode 100644 drivers/gpu/drm/gna/gna_hw.h
create mode 100644 drivers/gpu/drm/gna/gna_ioctl.c
create mode 100644 drivers/gpu/drm/gna/gna_mem.c
create mode 100644 drivers/gpu/drm/gna/gna_mem.h
create mode 100644 drivers/gpu/drm/gna/gna_pci.c
create mode 100644 drivers/gpu/drm/gna/gna_pci.h
create mode 100644 drivers/gpu/drm/gna/gna_request.c
create mode 100644 drivers/gpu/drm/gna/gna_request.h
create mode 100644 drivers/gpu/drm/gna/gna_score.c
create mode 100644 drivers/gpu/drm/gna/gna_score.h
create mode 100644 include/uapi/drm/gna_drm.h
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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