This patchset introduces a Linux Kernel driver (QAIC - Qualcomm AIC) for the Qualcomm Cloud AI 100 product (AIC100). Qualcomm Cloud AI 100 is a PCIe adapter card that hosts a dedicated machine learning inference accelerator. Tons of documentation in the first patch of the series. The driver was a misc device until recently. In accordance with the 2021 Ksummit (per LWN), it has been converted to a DRM driver due to the use of dma_buf. For historical purposes, the last revision that was on list is: https://lore.kernel.org/all/1589897645-17088-1-git-send-email-jhugo@xxxxxxxxxxxxxx/ The driver has evolved quite a bit in the two years since. Regarding the open userspace, it is currently a work in progress (WIP) but will be delivered. The motivation for this RFC series is to get some early feedback on the driver since Daniel Vetter and David Airlie indicated that would good idea while the userspace is being worked on. We are a bit new to the DRM area, and appreciate all guidence/feedback. Questions we are hoping to get an answer to: 1. Does Qualcomm Cloud AI 100 fit in DRM? 2. Would a "QAIC" directory in the GPU documentation be acceptable? We'd like to split up the documentation into multiple files as we feel that would make it more organized. It looks like only AMD has a directory, everyone else has a single file. Things that are still a todo (in no particular order): -Open userspace (see above) -Figure out what to do with the device partitioning feature. The uAPI for it is clunky. Seems like perhaps it should fall under a cgroup. The intent is to start a discussion over in the cgroup area to see what the experts say. -Add proper documentation for our sysfs additions -Extend the driver to export a few of the MHI channels to userspace. We are currently using an old driver which was proposed and rejected. Need to refactor and make something QAIC specific. -Covert the documentation (patch 1) to proper rst syntax Jeffrey Hugo (14): drm/qaic: Add documentation for AIC100 accelerator driver drm/qaic: Add uapi and core driver file drm/qaic: Add qaic.h internal header drm/qaic: Add MHI controller drm/qaic: Add control path drm/qaic: Add datapath drm/qaic: Add debugfs drm/qaic: Add RAS component drm/qaic: Add ssr component drm/qaic: Add sysfs drm/qaic: Add telemetry drm/qaic: Add tracepoints drm/qaic: Add qaic driver to the build system MAINTAINERS: Add entry for QAIC driver Documentation/gpu/drivers.rst | 1 + Documentation/gpu/qaic.rst | 567 +++++++++ MAINTAINERS | 7 + drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/qaic/Kconfig | 33 + drivers/gpu/drm/qaic/Makefile | 17 + drivers/gpu/drm/qaic/mhi_controller.c | 575 +++++++++ drivers/gpu/drm/qaic/mhi_controller.h | 18 + drivers/gpu/drm/qaic/qaic.h | 396 ++++++ drivers/gpu/drm/qaic/qaic_control.c | 1788 +++++++++++++++++++++++++++ drivers/gpu/drm/qaic/qaic_data.c | 2152 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/qaic/qaic_debugfs.c | 335 +++++ drivers/gpu/drm/qaic/qaic_debugfs.h | 33 + drivers/gpu/drm/qaic/qaic_drv.c | 825 +++++++++++++ drivers/gpu/drm/qaic/qaic_ras.c | 653 ++++++++++ drivers/gpu/drm/qaic/qaic_ras.h | 11 + drivers/gpu/drm/qaic/qaic_ssr.c | 889 ++++++++++++++ drivers/gpu/drm/qaic/qaic_ssr.h | 13 + drivers/gpu/drm/qaic/qaic_sysfs.c | 113 ++ drivers/gpu/drm/qaic/qaic_telemetry.c | 851 +++++++++++++ drivers/gpu/drm/qaic/qaic_telemetry.h | 14 + drivers/gpu/drm/qaic/qaic_trace.h | 493 ++++++++ include/uapi/drm/qaic_drm.h | 283 +++++ 24 files changed, 10070 insertions(+) create mode 100644 Documentation/gpu/qaic.rst create mode 100644 drivers/gpu/drm/qaic/Kconfig create mode 100644 drivers/gpu/drm/qaic/Makefile create mode 100644 drivers/gpu/drm/qaic/mhi_controller.c create mode 100644 drivers/gpu/drm/qaic/mhi_controller.h create mode 100644 drivers/gpu/drm/qaic/qaic.h create mode 100644 drivers/gpu/drm/qaic/qaic_control.c create mode 100644 drivers/gpu/drm/qaic/qaic_data.c create mode 100644 drivers/gpu/drm/qaic/qaic_debugfs.c create mode 100644 drivers/gpu/drm/qaic/qaic_debugfs.h create mode 100644 drivers/gpu/drm/qaic/qaic_drv.c create mode 100644 drivers/gpu/drm/qaic/qaic_ras.c create mode 100644 drivers/gpu/drm/qaic/qaic_ras.h create mode 100644 drivers/gpu/drm/qaic/qaic_ssr.c create mode 100644 drivers/gpu/drm/qaic/qaic_ssr.h create mode 100644 drivers/gpu/drm/qaic/qaic_sysfs.c create mode 100644 drivers/gpu/drm/qaic/qaic_telemetry.c create mode 100644 drivers/gpu/drm/qaic/qaic_telemetry.h create mode 100644 drivers/gpu/drm/qaic/qaic_trace.h create mode 100644 include/uapi/drm/qaic_drm.h -- 2.7.4
