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path: root/drivers/gpu/drm/msm/msm_mmu.h (follow)
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2021-06-23drm/msm: devcoredump iommu fault supportRob Clark1-0/+1
Wire up support to stall the SMMU on iova fault, and collect a devcore- dump snapshot for easier debugging of faults. Currently this is a6xx-only, but mostly only because so far it is the only one using adreno-smmu-priv. Signed-off-by: Rob Clark <robdclark@chromium.org> Acked-by: Jordan Crouse <jordan@cosmicpenguin.net> Link: https://lore.kernel.org/r/20210610214431.539029-6-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2021-06-23drm/msm: Improve the a6xx page fault handlerJordan Crouse1-2/+2
Use the new adreno-smmu-priv fault info function to get more SMMU debug registers and print the current TTBR0 to debug per-instance pagetables and figure out which GPU block generated the request. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20210610214431.539029-4-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org>
2020-09-12drm/msm: Add support to create a local pagetableJordan Crouse1-1/+15
Add support to create a io-pgtable for use by targets that support per-instance pagetables. In order to support per-instance pagetables the GPU SMMU device needs to have the qcom,adreno-smmu compatible string and split pagetables enabled. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-05-23drm/msm: Update the MMU helper function APIsJordan Crouse1-2/+2
Instead of using a bare unsigned type for the length value for map/unmap functions pass in a size_t to more correctly match up with the underlying APIs. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
2020-05-23drm/msm: Attach the IOMMU device during initializationJordan Crouse1-1/+0
Everywhere an IOMMU object is created by msm_gpu_create_address_space the IOMMU device is attached immediately after. Instead of carrying around the infrastructure to do the attach from the device specific code do it directly in the msm_iommu_init() function. This gets it out of the way for more aggressive cleanups that follow. Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> [squash in rebase fixups and fix for unused fxn] Signed-off-by: Rob Clark <robdclark@chromium.org>
2019-10-07drm/msm: Remove unused function argumentsDrew Davenport1-2/+2
The arguments related to IOMMU port name have been unused since commit 944fc36c31ed ("drm/msm: use upstream iommu") and can be removed. Signed-off-by: Drew Davenport <ddavenport@chromium.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234Thomas Gleixner1-12/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-11drm/msm: implement a2xx mmuJonathan Marek1-0/+3
A2XX has its own very simple MMU. Added a msm_use_mmu() function because we can't rely on iommu_present to decide to use MMU or not. Signed-off-by: Jonathan Marek <jonathan@marek.ca> Signed-off-by: Rob Clark <robdclark@gmail.com>
2018-12-11drm/msm: Remove sgt from the mmu unmap functionJordan Crouse1-2/+1
The scatter gather table doesn't need to be passed in for the MMU unmap function. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-02-06drm/msm: let gpu wire up it's own fault handlerRob Clark1-0/+9
Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-11-28drm/msm: convert iova to 64bRob Clark1-2/+2
For a5xx the gpu is 64b so we need to change iova to 64b everywhere. On the display side, iova is still 32b so it can ignore the upper bits. (Although all the armv8 devices have an iommu that can map 64b pa to 32b iova.) Signed-off-by: Rob Clark <robdclark@gmail.com>
2016-03-02drm/msm: make iommu port names const'ierRob Clark1-2/+2
Signed-off-by: Rob Clark <robdclark@gmail.com>
2014-08-04drm/msm: use upstream iommuRob Clark1-4/+4
Downstream kernel IOMMU had a non-standard way of dealing with multiple devices and multiple ports/contexts. We don't need that on upstream kernel, so rip out the crazy. Note that we have to move the pinning of the ringbuffer to after the IOMMU is attached. No idea how that managed to work properly on the downstream kernel. For now, I am leaving the IOMMU port name stuff in place, to simplify things for folks trying to backport latest drm/msm to device kernels. Once we no longer have to care about pre-DT kernels, we can drop this and instead backport upstream IOMMU driver. Signed-off-by: Rob Clark <robdclark@gmail.com>
2014-06-22drm/msm: fix IOMMU cleanup for -EPROBE_DEFERStephane Viau1-0/+1
If probe fails after IOMMU is attached, we need to detach in order to clean up properly. Before this change, IOMMU faults would occur if the probe failed (-EPROBE_DEFER). Signed-off-by: Stephane Viau <sviau@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
2014-01-09drm/msm: add support for non-IOMMU systemsRob Clark1-0/+47
Add a VRAM carveout that is used for systems which do not have an IOMMU. The VRAM carveout uses CMA. The arch code must setup a CMA pool for the device (preferrably in highmem.. a 256m-512m VRAM pool in lowmem is not cool). The user can configure the VRAM pool size using msm.vram module param. Technically, the abstraction of IOMMU behind msm_mmu is not strictly needed, but it simplifies the GEM code a bit, and will be useful later when I add support for a2xx devices with GPUMMU, so I decided to keep this part. It appears to be possible to configure the GPU to restrict access to addresses within the VRAM pool, but this is not done yet. So for now the GPU will refuse to load if there is no sort of mmu. Once address based limits are supported and tested to confirm that we aren't giving the GPU access to arbitrary memory, this restriction can be lifted Signed-off-by: Rob Clark <robdclark@gmail.com>
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