[GIT PULL] dma-mapping updates for Linux 4.15

Hi Linus, please pull these dma-mapping updates: The following changes since commit 33d930e59a98fa10a0db9f56c7fa2f21a4aef9b9: Linux 4.14-rc5 (2017-10-15 21:01:12 -0400) are available in the git repository at: git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-4.15 for

[PATCH v2 0/2] Migo-R: reserve memory block with memblock APIs

Re-spinn of "[PATCH] sh: migor: Reserve memory block for CEU" with additional patch on top to post-pone page_to_pfn() mapping during mmap() on DMA memory. Laurent is probably working on a proper fix, so I'm just copying the iommu list here to make them aware of the problem on SH4 architecture,

[PATCH v2 1/2] sh: migor: Reserve memory block for CEU

A memory region for CEU (Capture Engine Unit) video buffers has to be reserved during initialization. Originally, it was allocated through DMA API helpers and stored in the second IORESOURCE_MEM entry, to be later remapped by the CEU driver with a call to 'dma_declare_coherent_memory()' As Linux

[RFC v2 2/2] base: dma-mapping: Postpone page_to_pfn() on mmap()

On SH4 architecture, with SPARSEMEM memory model, translating page to pfn hangs the CPU. Post-pone translation to pfn after dma_mmap_from_dev_coherent() function call as it succeeds and make page translation not necessary. This patch was suggested by Laurent Pinchart and he's working to submit a

Re: [PATCH V4 3/6] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device

Hi, On Mon, Aug 7, 2017 at 5:59 PM, Rob Clark wrote: > On Mon, Aug 7, 2017 at 4:27 AM, Vivek Gautam > wrote: >> On Thu, Jul 13, 2017 at 5:20 PM, Rob Clark wrote: >>> On Thu, Jul 13, 2017 at 1:35 AM, Sricharan R

[RFC PATCH] drivers: base: dma-coherent: find free region without alignment

dma-coherent uses bitmap API which internally consider align based on the requested size. Depending on some usage pattern, using align, I think, may be good for fast search and anti-fragmentation. But with the align, an allocation may be failed. This is a example, total size is 30MB, only few

Re: [PATCH 2/2] iommu/ipmmu-vmsa: Add r8a779(70|95) DT bindings

Hi Simon, On Fri, Nov 10, 2017 at 1:15 PM, Simon Horman wrote: > Update the IPMMU DT binding documentation to include the > r8a77970 (R-Car V3M) and r8a77995 (R-Car D3) compat strings. > > Based on work for r8a7796 by Magnus Damm. > > Signed-off-by: Simon Horman

Re: [RFC PATCH] drivers: base: dma-coherent: find free region without alignment

Hi Jaewon, On 2017-11-14 09:42, Jaewon Kim wrote: dma-coherent uses bitmap API which internally consider align based on the requested size. Depending on some usage pattern, using align, I think, may be good for fast search and anti-fragmentation. But with the align, an allocation may be failed.

[PATCH/RFT v5 2/3] iommu/ipmmu-vmsa: Hook up r8a7796 DT matching code

From: Magnus Damm Support the r8a7796 IPMMU by sharing feature flags between r8a7795 and r8a7796. Also update IOMMU_OF_DECLARE to hook up the updated compat string. Signed-off-by: Magnus Damm Reviewed-by: Geert Uytterhoeven

[PATCH/RFT v5 1/3] iommu/ipmmu-vmsa: Increase maximum micro-TLBS to 48

From: Magnus Damm Bump up the maximum numbers of micro-TLBS to 48. Each IPMMU device instance get micro-TLB assignment via the "iommus" property in DT. Older SoCs tend to use a maximum number of 32 micro-TLBs per IPMMU instance however newer SoCs such as r8a7796 make

[PATCH/RFT v5 0/3] iommu/ipmmu-vmsa: r8a779(6|70|95) support

This series adds r8a7796 (R-Car M3-W), r8a77970 (R-Car V3M) and r8a77995 (R-Car D3) support to the IPMMU driver. The maximum number of micro-TLBs are increased and the driver is adjusted to match on the new DT bindings posted separately. Changes since V4: - Marked as RFC as I believe more

[PATCH/RFT v5 3/3] iommu/ipmmu-vmsa: Hook up r8a779(70|95) DT matching code

Support the r8a77970 (R-Car V3M) and r8a77995 (R-Car D3) IPMMUs by sharing feature flags with r8a7795 (R-Car H3) and r8a7796 (R-Car M3-W). Also update IOMMU_OF_DECLARE to hook up the compat strings. Based on work for the r8a7796 by Magnus Damm Signed-off-by: Simon Horman