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It's worth pointing out that this is a new driver, written from the ground up, rather than a refactored version of our existing downstream driver (pvrsrvkm). This new DRM driver supports: - GEM shmem allocations - dma-buf / PRIME - Per-context userspace managed virtual address space - DRM sync objects (binary and timeline) - Power management suspend / resume - GPU job submission (geometry, fragment, compute, transfer) - META firmware processor - MIPS firmware processor - GPU hang detection and recovery Currently our main focus is on the AXE-1-16M GPU. Testing so far has been done using a TI SK-AM62 board (AXE-1-16M GPU). Firmware for the AXE-1-16M can be found here: https://gitlab.freedesktop.org/frankbinns/linux-firmware/-/tree/powervr A Vulkan driver that works with our downstream kernel driver has already been merged into Mesa [1][2]. Support for this new DRM driver is being maintained in a merge request [3], with the branch located here: https://gitlab.freedesktop.org/frankbinns/mesa/-/tree/powervr-winsys Job stream formats are documented at: https://gitlab.freedesktop.org/mesa/mesa/-/blob/f8d2b42ae65c2f16f36a43e0ae39d288431e4263/src/imagination/csbgen/rogue_kmd_stream.xml The Vulkan driver is progressing towards Vulkan 1.0. We're code complete, and are working towards passing conformance. The current combination of this kernel driver with the Mesa Vulkan driver (powervr-mesa-next branch) achieves 88.3% conformance. The code in this patch series, along with the needed dts changes can be found here: https://gitlab.freedesktop.org/sarah-walker-imgtec/powervr/-/tree/dev/v6_dts The full development history can be found here: https://gitlab.freedesktop.org/frankbinns/powervr/-/tree/powervr-next This patch series has dependencies on a number of patches not yet merged. They are listed below : drm/sched: Convert drm scheduler to use a work queue rather than kthread: https://lore.kernel.org/dri-devel/20230404002211.3611376-2-matthew.brost@intel.com/ drm/sched: Move schedule policy to scheduler / entity: https://lore.kernel.org/dri-devel/20230404002211.3611376-3-matthew.brost@intel.com/ drm/sched: Add DRM_SCHED_POLICY_SINGLE_ENTITY scheduling policy: https://lore.kernel.org/dri-devel/20230404002211.3611376-4-matthew.brost@intel.com/ drm/sched: Start run wq before TDR in drm_sched_start: https://lore.kernel.org/dri-devel/20230404002211.3611376-6-matthew.brost@intel.com/ drm/sched: Submit job before starting TDR: https://lore.kernel.org/dri-devel/20230404002211.3611376-7-matthew.brost@intel.com/ drm/sched: Add helper to set TDR timeout: https://lore.kernel.org/dri-devel/20230404002211.3611376-8-matthew.brost@intel.com/ [1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15243 [2] https://gitlab.freedesktop.org/mesa/mesa/-/tree/main/src/imagination/vulkan [3] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15507 High level summary of changes: v6: * Fix a number of error paths * Attempt to recover GPU on MMU flush command failure * Defer freeing/releasing page table backing pages until after TLB flush * Add memory barriers and use WRITE_ONCE() when writing to page tables * Add Kconfig dependency on CONFIG_PM * Fix a few issues with GPU VA manager usage * Split up header commit due to size * Update compatible string and driver description to match marketing name * Use alloc_page() to allocate MIPS pagetable * Remove obsolete documentation v5: * Retrieve GPU device information from firmware image header * Address issues with DT binding and example DTS * Update VM code for upstream GPU VA manager * BOs are always zeroed on allocation * Update copyright v4: * Implemented hang recovery via firmware hard reset * Add support for partial render jobs * Move to a threaded IRQ * Remove unnecessary read/write and clock helpers * Remove device tree elements not relevant to AXE-1-16M * Clean up resource acquisition * Remove unused DT binding attributes v3: * Use drm_sched for scheduling * Use GPU VA manager * Use runtime PM * Use drm_gem_shmem * GPU watchdog and device loss handling * DT binding changes: remove unused attributes, add additionProperties:false v2: * Redesigned and simplified UAPI based on RFC feedback from XDC 2022 * Support for transfer and partial render jobs * Support for timeline sync objects RFC v1: https://lore.kernel.org/dri-devel/20220815165156.118212-1-sarah.walker@imgtec.com/ RFC v2: https://lore.kernel.org/dri-devel/20230413103419.293493-1-sarah.walker@imgtec.com/ v3: https://lore.kernel.org/dri-devel/20230613144800.52657-1-sarah.walker@imgtec.com/ v4: https://lore.kernel.org/dri-devel/20230714142355.111382-1-sarah.walker@imgtec.com/ v5: https://lore.kernel.org/dri-devel/20230816082531.164695-1-sarah.walker@imgtec.com/ Donald Robson (1): drm/gpuva_mgr: Helper to get range of unmap from a remap op. Matt Coster (1): sizes.h: Add entries between 32G and 64T Sarah Walker (18): dt-bindings: gpu: Add Imagination Technologies PowerVR/IMG GPU drm/imagination/uapi: Add PowerVR driver UAPI drm/imagination: Add skeleton PowerVR driver drm/imagination: Get GPU resources drm/imagination: Add GPU register headers drm/imagination: Add firmware and MMU related headers drm/imagination: Add FWIF headers drm/imagination: Add GPU ID parsing and firmware loading drm/imagination: Add GEM and VM related code drm/imagination: Implement power management drm/imagination: Implement firmware infrastructure and META FW support drm/imagination: Implement MIPS firmware processor and MMU support drm/imagination: Implement free list and HWRT create and destroy ioctls drm/imagination: Implement context creation/destruction ioctls drm/imagination: Implement job submission and scheduling drm/imagination: Add firmware trace header drm/imagination: Add firmware trace to debugfs drm/imagination: Add driver documentation .../devicetree/bindings/gpu/img,powervr.yaml | 73 + Documentation/gpu/drivers.rst | 2 + Documentation/gpu/imagination/index.rst | 13 + Documentation/gpu/imagination/uapi.rst | 174 + MAINTAINERS | 10 + drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/imagination/Kconfig | 17 + drivers/gpu/drm/imagination/Makefile | 35 + drivers/gpu/drm/imagination/pvr_ccb.c | 641 ++ drivers/gpu/drm/imagination/pvr_ccb.h | 71 + drivers/gpu/drm/imagination/pvr_cccb.c | 267 + drivers/gpu/drm/imagination/pvr_cccb.h | 109 + drivers/gpu/drm/imagination/pvr_context.c | 464 ++ drivers/gpu/drm/imagination/pvr_context.h | 205 + drivers/gpu/drm/imagination/pvr_debugfs.c | 53 + drivers/gpu/drm/imagination/pvr_debugfs.h | 29 + drivers/gpu/drm/imagination/pvr_device.c | 651 ++ drivers/gpu/drm/imagination/pvr_device.h | 704 ++ drivers/gpu/drm/imagination/pvr_device_info.c | 254 + drivers/gpu/drm/imagination/pvr_device_info.h | 186 + drivers/gpu/drm/imagination/pvr_drv.c | 1513 ++++ drivers/gpu/drm/imagination/pvr_drv.h | 129 + drivers/gpu/drm/imagination/pvr_free_list.c | 625 ++ drivers/gpu/drm/imagination/pvr_free_list.h | 195 + drivers/gpu/drm/imagination/pvr_fw.c | 1470 ++++ drivers/gpu/drm/imagination/pvr_fw.h | 508 ++ drivers/gpu/drm/imagination/pvr_fw_info.h | 135 + drivers/gpu/drm/imagination/pvr_fw_meta.c | 554 ++ drivers/gpu/drm/imagination/pvr_fw_meta.h | 14 + drivers/gpu/drm/imagination/pvr_fw_mips.c | 252 + drivers/gpu/drm/imagination/pvr_fw_mips.h | 48 + .../gpu/drm/imagination/pvr_fw_startstop.c | 304 + .../gpu/drm/imagination/pvr_fw_startstop.h | 13 + drivers/gpu/drm/imagination/pvr_fw_trace.c | 515 ++ drivers/gpu/drm/imagination/pvr_fw_trace.h | 78 + drivers/gpu/drm/imagination/pvr_gem.c | 409 ++ drivers/gpu/drm/imagination/pvr_gem.h | 191 + drivers/gpu/drm/imagination/pvr_hwrt.c | 549 ++ drivers/gpu/drm/imagination/pvr_hwrt.h | 165 + drivers/gpu/drm/imagination/pvr_job.c | 773 ++ drivers/gpu/drm/imagination/pvr_job.h | 161 + drivers/gpu/drm/imagination/pvr_mmu.c | 2593 +++++++ drivers/gpu/drm/imagination/pvr_mmu.h | 108 + drivers/gpu/drm/imagination/pvr_params.c | 147 + drivers/gpu/drm/imagination/pvr_params.h | 72 + drivers/gpu/drm/imagination/pvr_power.c | 433 ++ drivers/gpu/drm/imagination/pvr_power.h | 41 + drivers/gpu/drm/imagination/pvr_queue.c | 1455 ++++ drivers/gpu/drm/imagination/pvr_queue.h | 179 + .../gpu/drm/imagination/pvr_rogue_cr_defs.h | 6193 +++++++++++++++++ .../imagination/pvr_rogue_cr_defs_client.h | 159 + drivers/gpu/drm/imagination/pvr_rogue_defs.h | 179 + drivers/gpu/drm/imagination/pvr_rogue_fwif.h | 2208 ++++++ .../drm/imagination/pvr_rogue_fwif_check.h | 491 ++ .../drm/imagination/pvr_rogue_fwif_client.h | 371 + .../imagination/pvr_rogue_fwif_client_check.h | 133 + .../drm/imagination/pvr_rogue_fwif_common.h | 60 + .../drm/imagination/pvr_rogue_fwif_dev_info.h | 113 + .../pvr_rogue_fwif_resetframework.h | 28 + .../gpu/drm/imagination/pvr_rogue_fwif_sf.h | 1648 +++++ .../drm/imagination/pvr_rogue_fwif_shared.h | 258 + .../imagination/pvr_rogue_fwif_shared_check.h | 108 + .../drm/imagination/pvr_rogue_fwif_stream.h | 78 + .../drm/imagination/pvr_rogue_heap_config.h | 113 + drivers/gpu/drm/imagination/pvr_rogue_meta.h | 356 + drivers/gpu/drm/imagination/pvr_rogue_mips.h | 335 + .../drm/imagination/pvr_rogue_mips_check.h | 58 + .../gpu/drm/imagination/pvr_rogue_mmu_defs.h | 136 + drivers/gpu/drm/imagination/pvr_stream.c | 285 + drivers/gpu/drm/imagination/pvr_stream.h | 75 + drivers/gpu/drm/imagination/pvr_stream_defs.c | 351 + drivers/gpu/drm/imagination/pvr_stream_defs.h | 16 + drivers/gpu/drm/imagination/pvr_sync.c | 287 + drivers/gpu/drm/imagination/pvr_sync.h | 84 + drivers/gpu/drm/imagination/pvr_vm.c | 963 +++ drivers/gpu/drm/imagination/pvr_vm.h | 60 + drivers/gpu/drm/imagination/pvr_vm_mips.c | 236 + drivers/gpu/drm/imagination/pvr_vm_mips.h | 22 + include/drm/drm_gpuva_mgr.h | 27 + include/linux/sizes.h | 9 + include/uapi/drm/pvr_drm.h | 1306 ++++ 82 files changed, 34336 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpu/img,powervr.yaml create mode 100644 Documentation/gpu/imagination/index.rst create mode 100644 Documentation/gpu/imagination/uapi.rst create mode 100644 drivers/gpu/drm/imagination/Kconfig create mode 100644 drivers/gpu/drm/imagination/Makefile create mode 100644 drivers/gpu/drm/imagination/pvr_ccb.c create mode 100644 drivers/gpu/drm/imagination/pvr_ccb.h create mode 100644 drivers/gpu/drm/imagination/pvr_cccb.c create mode 100644 drivers/gpu/drm/imagination/pvr_cccb.h create mode 100644 drivers/gpu/drm/imagination/pvr_context.c create mode 100644 drivers/gpu/drm/imagination/pvr_context.h create mode 100644 drivers/gpu/drm/imagination/pvr_debugfs.c create mode 100644 drivers/gpu/drm/imagination/pvr_debugfs.h create mode 100644 drivers/gpu/drm/imagination/pvr_device.c create mode 100644 drivers/gpu/drm/imagination/pvr_device.h create mode 100644 drivers/gpu/drm/imagination/pvr_device_info.c create mode 100644 drivers/gpu/drm/imagination/pvr_device_info.h create mode 100644 drivers/gpu/drm/imagination/pvr_drv.c create mode 100644 drivers/gpu/drm/imagination/pvr_drv.h create mode 100644 drivers/gpu/drm/imagination/pvr_free_list.c create mode 100644 drivers/gpu/drm/imagination/pvr_free_list.h create mode 100644 drivers/gpu/drm/imagination/pvr_fw.c create mode 100644 drivers/gpu/drm/imagination/pvr_fw.h create mode 100644 drivers/gpu/drm/imagination/pvr_fw_info.h create mode 100644 drivers/gpu/drm/imagination/pvr_fw_meta.c create mode 100644 drivers/gpu/drm/imagination/pvr_fw_meta.h create mode 100644 drivers/gpu/drm/imagination/pvr_fw_mips.c create mode 100644 drivers/gpu/drm/imagination/pvr_fw_mips.h create mode 100644 drivers/gpu/drm/imagination/pvr_fw_startstop.c create mode 100644 drivers/gpu/drm/imagination/pvr_fw_startstop.h create mode 100644 drivers/gpu/drm/imagination/pvr_fw_trace.c create mode 100644 drivers/gpu/drm/imagination/pvr_fw_trace.h create mode 100644 drivers/gpu/drm/imagination/pvr_gem.c create mode 100644 drivers/gpu/drm/imagination/pvr_gem.h create mode 100644 drivers/gpu/drm/imagination/pvr_hwrt.c create mode 100644 drivers/gpu/drm/imagination/pvr_hwrt.h create mode 100644 drivers/gpu/drm/imagination/pvr_job.c create mode 100644 drivers/gpu/drm/imagination/pvr_job.h create mode 100644 drivers/gpu/drm/imagination/pvr_mmu.c create mode 100644 drivers/gpu/drm/imagination/pvr_mmu.h create mode 100644 drivers/gpu/drm/imagination/pvr_params.c create mode 100644 drivers/gpu/drm/imagination/pvr_params.h create mode 100644 drivers/gpu/drm/imagination/pvr_power.c create mode 100644 drivers/gpu/drm/imagination/pvr_power.h create mode 100644 drivers/gpu/drm/imagination/pvr_queue.c create mode 100644 drivers/gpu/drm/imagination/pvr_queue.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_cr_defs.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_cr_defs_client.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_defs.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_check.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_client.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_client_check.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_common.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_dev_info.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_resetframework.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_sf.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_shared.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_shared_check.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_fwif_stream.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_heap_config.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_meta.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_mips.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_mips_check.h create mode 100644 drivers/gpu/drm/imagination/pvr_rogue_mmu_defs.h create mode 100644 drivers/gpu/drm/imagination/pvr_stream.c create mode 100644 drivers/gpu/drm/imagination/pvr_stream.h create mode 100644 drivers/gpu/drm/imagination/pvr_stream_defs.c create mode 100644 drivers/gpu/drm/imagination/pvr_stream_defs.h create mode 100644 drivers/gpu/drm/imagination/pvr_sync.c create mode 100644 drivers/gpu/drm/imagination/pvr_sync.h create mode 100644 drivers/gpu/drm/imagination/pvr_vm.c create mode 100644 drivers/gpu/drm/imagination/pvr_vm.h create mode 100644 drivers/gpu/drm/imagination/pvr_vm_mips.c create mode 100644 drivers/gpu/drm/imagination/pvr_vm_mips.h create mode 100644 include/uapi/drm/pvr_drm.h