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@xxxxxxxxxxxxxx>
Reviewed-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> ---
> 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
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