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| author |   Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> | 2022-02-25 15:13:16 +0200 |
|---|---|---|
| committer |   Ramalingam C <ramalingam.c@intel.com> | 2022-03-07 00:09:13 +0530 |
| commit | d028a7690d872d4720628c7475dbd1a25cfa73df (patch) | |
| tree | 3793d67ea0316764b803086df19cf3ebbf649c21 /drivers/gpu/drm/i915/gt/gen6_ppgtt.c | |
| parent | drm/i915/dmabuf: Update dma_buf_ops.unmap_dma_buf callback to use drm_gem_unmap_dma_buf() (diff) | |
| download | linux-dev-d028a7690d872d4720628c7475dbd1a25cfa73df.tar.xz linux-dev-d028a7690d872d4720628c7475dbd1a25cfa73df.zip | |
drm/i915/dmabuf: Fix prime_mmap to work when using LMEM
The current implementation of i915 prime mmap only works when initializing
drm_i915_gem_object with shmem_region.
When using LMEM, drm_i915_gem_object is initialized with ttm_system_region.
In order to make prime mmap work even this case, when using LMEM
(when using ttm in i915), dma_buf_ops.mmap callback function calls
drm_gem_prime_mmap(). drm_gem_prime_mmap() of drm core calls internally
i915_gem_mmap() so that prime mmap can perform normally.
The fake offset is processed inside drm_gem_prime_mmap().
Testcase: igt/prime_mmap
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220225131316.1433515-3-gwan-gyeong.mun@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/gen6_ppgtt.c')
0 files changed, 0 insertions, 0 deletions