Displaying 2 results from an estimated 2 matches for "iommu_addr_mask".
2015 Apr 17
4
[PATCH 2/6] instmem/gk20a: refer to IOMMU physical translation bit
...t; priv->iommu_pgshift = plat->gpu->iommu.pgshift;
> + priv->iommu_phys_addr_bit = plat->gpu->iommu.phys_addr_bit;
Looks good, but I think I would definitely prefer this to be a mask
instead of a bit index, i.e:
r->offset &= ~(priv->iommu_addr_mask >> priv->iommu_pgshift);
and
r->offset |= (priv->iommu_addr_mask >> priv->iommu_pgshift);
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