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gpu: nvgpu: Increase programmed ctagline at compr page boundaries

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Increase the ctagline that is programmed in the page tables when the
buffer offset crosses the compression page boundaries. This fixes
compressible-kind fixed-address mapping with 4k pages when the GPU VA
is not aligned by the compression page size.

Bug 1995897
Bug 2011640
Bug 2011668

Change-Id: I1f1f9750635a20a916527c9d18fda7f8aa6b1b1f
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1608465
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Sami Kiminki
2017-11-30 21:42:22 +02:00
committed by mobile promotions
parent 823ae76b1b
commit 18268185ec
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/nvgpu/common/mm/gmmu.c
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@@ -691,6 +691,14 @@ u64 gk20a_locked_gmmu_map(struct vm_gk20a *vm,
.aperture = aperture
};
/*
* We need to add the buffer_offset within compression_page_size so that
* the programmed ctagline gets increased at compression_page_size
* boundaries.
*/
if (attrs.ctag)
attrs.ctag += buffer_offset & (ctag_granularity - 1U);
#ifdef CONFIG_TEGRA_19x_GPU
nvgpu_gmmu_add_t19x_attrs(&attrs, flags);
#endif