iommu/ipmmu-vmsa: r8a7795 support V4 [PATCH v4 01/09] iommu/ipmmu-vmsa: Introduce features, break out alias [PATCH v4 02/09] iommu/ipmmu-vmsa: Add optional root device feature [PATCH v4 03/09] iommu/ipmmu-vmsa: Enable multi context support [PATCH v4 04/09] iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE() [PATCH v4 05/09] iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master [PATCH v4 06/09] iommu/ipmmu-vmsa: Write IMCTR twice [PATCH v4 07/09] iommu/ipmmu-vmsa: Make IMBUSCTR setup optional [PATCH v4 08/09] iommu/ipmmu-vmsa: Allow two bit SL0 [PATCH v4 09/09] iommu/ipmmu-vmsa: Hook up r8a7795 DT matching code Here's an updated series for r8a7795 IPMMU support. The patches adjust the code based on feedback from Geert and Robin together with a rebase to include changes from the recently posted series: [PATCH 00/04] iommu/ipmmu-vmsa: 32-bit ARM update The DT binding for r8a7795 has been accepted for upstream merge and this series implements support following such format: d4e42e7 iommu/ipmmu-vmsa: Add r8a7795 DT binding The r8a7795 IPMMU is almost register compatible with earlier devices like r8a7790-r8a7794, however some bitfields have been shifted slightly. On a grander scale topology has been added and interrupts have been reworked. So now there are several "cache" IPMMU units without interrupt that somehow communicate with IPMMU-MM that is the only instance that supports interrupts. The code refers to IPMMU-MM as a "root" device and the other ones as "leaf" nodes. Changes since V3: - Rebased on top of [PATCH 00/04] iommu/ipmmu-vmsa: 32-bit ARM update - Patch 1/9 has been updated to use of_device_get_match_data(), thanks Robin! - Patch 2/9 has been reworked to make it easier to follow, thanks Geert! - Patch 3/9 now uses unsigned int for context counts - thanks Robin! - Patch 6/9 now includes function name changes - thanks Robin! - Patch 9/9 now uses dev_err() instead of dev_info() - thanks Geert! Changes since V2: - Patch 2/9 has been updated with a bug fix and to supply __ipmmu_find_root() - Patch 4/9 now makes use of iommu_device_* functions - Patch 5/9 sets the mask to 40 bits instead of 64 bits - Patch 9/9 implements white list handling via ->xlate() and fixes a bug Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx> --- Developed on top of next-20170614 with the following series applied [PATCH 00/04] iommu/ipmmu-vmsa: 32-bit ARM update drivers/iommu/ipmmu-vmsa.c | 327 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 260 insertions(+), 67 deletions(-)
