提交 931e97f3 编写于 作者: L Lucas Stach

drm/etnaviv: mmuv2: support 40 bit phys address

MMUv2 supports up to 40 bits of physical address by folding the upper
8 bits into bits [4:11] of the PTE.
Signed-off-by: NLucas Stach <l.stach@pengutronix.de>
上级 a1fb6f20
......@@ -87,11 +87,14 @@ static int etnaviv_iommuv2_map(struct etnaviv_iommu_domain *domain,
struct etnaviv_iommuv2_domain *etnaviv_domain =
to_etnaviv_domain(domain);
int mtlb_entry, stlb_entry, ret;
u32 entry = (u32)paddr | MMUv2_PTE_PRESENT;
u32 entry = lower_32_bits(paddr) | MMUv2_PTE_PRESENT;
if (size != SZ_4K)
return -EINVAL;
if (IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT))
entry |= (upper_32_bits(paddr) & 0xff) << 4;
if (prot & ETNAVIV_PROT_WRITE)
entry |= MMUv2_PTE_WRITEABLE;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册