Hi, Robin, Thanks very much for your comment, and sorry for the last
reply format.
On Tue, 2016-05-10 at 11:28 +0100, Robin Murphy wrote:
> On 09/05/16 09:00, honghui.zh...@mediatek.com wrote:
> [...]
> > +static void *mtk_iommu_alloc_pgt(struct device *dev, size_t size, gfp_t
> > gfp)
> > +{
> >
hi, Robin, thanks very much for your comments.
On 5/10/2016 6:28 PM, Robin Murphy wrote:
> On 09/05/16 09:00, honghui.zh...@mediatek.com wrote:
> [...]
>> +static void *mtk_iommu_alloc_pgt(struct device *dev, size_t size, gfp_t gfp)
>> +{
>> +dma_addr_t dma;
>> +void *pages = alloc_pages_e
On 09/05/16 09:00, honghui.zh...@mediatek.com wrote:
[...]
+static void *mtk_iommu_alloc_pgt(struct device *dev, size_t size, gfp_t gfp)
+{
+ dma_addr_t dma;
+ void *pages = alloc_pages_exact(size, gfp | __GFP_ZERO);
+
+ if (!pages)
+ return NULL;
+
+ dma = d
From: Honghui Zhang
Mediatek SoC's M4U have two generations of HW architcture. Generation one
use flat, one layer pagetable, and was shipped with ARM architecture, it
only support 4K size page mapping. MT2701 SoC use this generation one
m4u HW. Generation two uses the ARM short-descriptor transla
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