Re: [PATCH 4/7 v2] pseries/iommu: implement DDW-aware dma_get_page_shift

2015-10-27 Thread Nishanth Aravamudan
On 27.10.2015 [16:56:10 +1100], Alexey Kardashevskiy wrote: > On 10/24/2015 07:59 AM, Nishanth Aravamudan wrote: > >When DDW (Dynamic DMA Windows) are present for a device, we have stored > >the TCE (Translation Control Entry) size in a special device tree > >property. Check if we have enabled DDW

Re: [PATCH 4/7 v2] pseries/iommu: implement DDW-aware dma_get_page_shift

2015-10-26 Thread Alexey Kardashevskiy
On 10/24/2015 07:59 AM, Nishanth Aravamudan wrote: When DDW (Dynamic DMA Windows) are present for a device, we have stored the TCE (Translation Control Entry) size in a special device tree property. Check if we have enabled DDW for the device and return the TCE size from that property if present.

[PATCH 4/7 v2] pseries/iommu: implement DDW-aware dma_get_page_shift

2015-10-23 Thread Nishanth Aravamudan
When DDW (Dynamic DMA Windows) are present for a device, we have stored the TCE (Translation Control Entry) size in a special device tree property. Check if we have enabled DDW for the device and return the TCE size from that property if present. If the property isn't present, fallback to looking t