diff options
author | Jonathan Marek <jonathan@marek.ca> | 2018-11-14 17:08:04 -0500 |
---|---|---|
committer | Rob Clark <robdclark@gmail.com> | 2018-12-11 13:07:10 -0500 |
commit | c2052a4e5c99f7edcb0283e6e12b2fb6975b7353 (patch) | |
tree | 2c1b7d32227e42b3d757d3cce7b6a5af1fbdad4a /drivers/gpu/drm/msm/msm_gem_vma.c | |
parent | d1d9d0e1724d6a7123b4280fdf6630ae70f96c9c (diff) |
drm/msm: implement a2xx mmu
A2XX has its own very simple MMU.
Added a msm_use_mmu() function because we can't rely on iommu_present to
decide to use MMU or not.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem_vma.c')
-rw-r--r-- | drivers/gpu/drm/msm/msm_gem_vma.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c index ee46d8321b05..557360788084 100644 --- a/drivers/gpu/drm/msm/msm_gem_vma.c +++ b/drivers/gpu/drm/msm/msm_gem_vma.c @@ -159,3 +159,26 @@ msm_gem_address_space_create(struct device *dev, struct iommu_domain *domain, return aspace; } + +struct msm_gem_address_space * +msm_gem_address_space_create_a2xx(struct device *dev, struct msm_gpu *gpu, + const char *name, uint64_t va_start, uint64_t va_end) +{ + struct msm_gem_address_space *aspace; + u64 size = va_end - va_start; + + aspace = kzalloc(sizeof(*aspace), GFP_KERNEL); + if (!aspace) + return ERR_PTR(-ENOMEM); + + spin_lock_init(&aspace->lock); + aspace->name = name; + aspace->mmu = msm_gpummu_new(dev, gpu); + + drm_mm_init(&aspace->mm, (va_start >> PAGE_SHIFT), + size >> PAGE_SHIFT); + + kref_init(&aspace->kref); + + return aspace; +} |