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 --- 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 -- 2.25.1
