drm/amdgpu: replace iova debugfs file with iomem (v3)

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This allows access to pages allocated through the driver with optional
IOMMU mapping.

v2: Fix number of bytes copied and add write method
v3: drop check for kmap return

Original-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Tom St Denis 2018-02-23 09:46:23 -05:00 • committed by Alex Deucher

parent 65e4b49019

commit ebb043f267

1 changed files with 81 additions and 21 deletions

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106

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

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