On Fri, 2019-08-02 at 19:29 +0200, Lucas Stach wrote:
Allow the mapping code to request a specific virtual address for the gem mapping. If the virtual address is zero we fall back to the old mode of allocating a virtual address for the mapping.
Signed-off-by: Lucas Stach l.stach@pengutronix.de
Reviewed-by: Philipp Zabel p.zabel@pengutronix.de
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 2 +- drivers/gpu/drm/etnaviv/etnaviv_gem.h | 2 +- drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 16 ++++++++++++++-- drivers/gpu/drm/etnaviv/etnaviv_mmu.h | 2 +- 4 files changed, 17 insertions(+), 5 deletions(-)
[...]
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index 99c20094295c..c344dde2fa05 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -220,9 +220,16 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu_context *context, return ret; }
+static int etnaviv_iommu_insert_exact(struct etnaviv_iommu_context *context,
struct drm_mm_node *node, size_t size, u64 va)+{
- return drm_mm_insert_node_in_range(&context->mm, node, size, 0, 0, va,
va + size, DRM_MM_INSERT_LOW);
We are only looking for an exact match, this could use DRM_MM_INSERT_LOWEST.
regards Philipp