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drm/i915: Add TTM offset argument to mmap.

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The FIXED mapping is only used for ttm, and tells userspace that the
mapping type is pre-defined. This disables the other type of mmap
offsets when discrete memory is used, so fix the selftests as well.

Document the struct as well, so it shows up in docbook.

Cc: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[mauld: Included minor fixes from the review comments]
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210714122833.766586-1-maarten.lankhorst@linux.intel.com
This commit is contained in:
Maarten Lankhorst 2021-07-14 14:28:33 +02:00 • committed by Matthew Auld
commit 7961c5b60f
4 changed files with 78 additions and 14 deletions
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