diff options
| author | Jordan Crouse <jcrouse@codeaurora.org> | 2020-08-17 15:01:38 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2020-09-12 10:48:29 -0700 |
| commit | e3c64c7221f6d85a3ba4db39a220432933d99a64 (patch) | |
| tree | 3db715b91cd09c9a802811015c13d5b176fad85c /drivers/gpu/drm/msm/adreno | |
| parent | 15eb9ad073c035499b4abd7456822c8696ac1941 (diff) | |
drm/msm: Set the global virtual address range from the IOMMU domain
Use the aperture settings from the IOMMU domain to set up the virtual
address range for the GPU. This allows us to transparently deal with
IOMMU side features (like split pagetables).
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index ce079e95dd9f..a833dd0ab751 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -192,6 +192,7 @@ adreno_iommu_create_address_space(struct msm_gpu *gpu, struct iommu_domain *iommu; struct msm_mmu *mmu; struct msm_gem_address_space *aspace; + u64 start, size; iommu = iommu_domain_alloc(&platform_bus_type); if (!iommu) @@ -199,8 +200,16 @@ adreno_iommu_create_address_space(struct msm_gpu *gpu, mmu = msm_iommu_new(&pdev->dev, iommu); - aspace = msm_gem_address_space_create(mmu, "gpu", SZ_16M, - 0xffffffff - SZ_16M); + /* + * Use the aperture start or SZ_16M, whichever is greater. This will + * ensure that we align with the allocated pagetable range while still + * allowing room in the lower 32 bits for GMEM and whatnot + */ + start = max_t(u64, SZ_16M, iommu->geometry.aperture_start); + size = iommu->geometry.aperture_end - start + 1; + + aspace = msm_gem_address_space_create(mmu, "gpu", + start & GENMASK(48, 0), size); if (IS_ERR(aspace) && !IS_ERR(mmu)) mmu->funcs->destroy(mmu); |