Displaying 2 results from an estimated 2 matches for "iommu_phys_addr_bit".
2015 Apr 17
4
[PATCH 2/6] instmem/gk20a: refer to IOMMU physical translation bit
...44
> --- a/drm/nouveau/nvkm/subdev/instmem/gk20a.c
> +++ b/drm/nouveau/nvkm/subdev/instmem/gk20a.c
> @@ -89,6 +89,7 @@ struct gk20a_instmem_priv {
> struct nvkm_mm *mm;
> struct iommu_domain *domain;
> unsigned long iommu_pgshift;
> + unsigned long iommu_phys_addr_bit;
>
> /* Only used by DMA API */
> struct dma_attrs attrs;
> @@ -169,8 +170,8 @@ gk20a_instobj_dtor_iommu(struct gk20a_instobj_priv *_node)
> r = list_first_entry(&_node->mem->regions, struct nvkm_mm_node,
> rl_entry);...
2015 Apr 16
15
[PATCH 0/6] map big page by platform IOMMU
Hi,
Generally the the imported buffers which has memory type TTM_PL_TT are
mapped as small pages probably due to lack of big page allocation. But the
platform device which also use memory type TTM_PL_TT, like GK20A, can
*allocate* big page though the IOMMU hardware inside the SoC. This is a try
to map the imported buffers as big pages in GMMU by the platform IOMMU. With
some preparation work to