Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752664AbdCHLHJ (ORCPT ); Wed, 8 Mar 2017 06:07:09 -0500 Received: from mail-pf0-f194.google.com ([209.85.192.194]:36782 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752470AbdCHLHG (ORCPT ); Wed, 8 Mar 2017 06:07:06 -0500 From: Magnus Damm To: joro@8bytes.org Cc: laurent.pinchart+renesas@ideasonboard.com, geert+renesas@glider.be, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, iommu@lists.linux-foundation.org, horms+renesas@verge.net.au, Magnus Damm , robin.murphy@arm.com, m.szyprowski@samsung.com Date: Wed, 08 Mar 2017 20:01:23 +0900 Message-Id: <148897088333.16106.13237004440297956899.sendpatchset@little-apple> Subject: [PATCH v3 00/09] iommu/ipmmu-vmsa: r8a7795 support V3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2665 Lines: 59 iommu/ipmmu-vmsa: r8a7795 support V3 [PATCH v3 01/09] iommu/ipmmu-vmsa: Introduce features, break out alias [PATCH v3 02/09] iommu/ipmmu-vmsa: Add optional root device feature [PATCH v3 03/09] iommu/ipmmu-vmsa: Enable multi context support [PATCH v3 04/09] iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE() [PATCH v3 05/09] iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master [PATCH v3 06/09] iommu/ipmmu-vmsa: Write IMCTR twice [PATCH v3 07/09] iommu/ipmmu-vmsa: Make IMBUSCTR setup optional [PATCH v3 08/09] iommu/ipmmu-vmsa: Allow two bit SL0 [PATCH v3 09/09] iommu/ipmmu-vmsa: Hook up r8a7795 DT matching code This series contains a much needed r8a7795 support update for the IPMMU driver. Last series was earlier posted as: [PATCH v2 00/11] iommu/ipmmu-vmsa: r8a7795 support V2 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. To make this more interesting the IPMMU driver needs to be shared between 32-bit ARM for r8a7790-r8a7794 and 64-bit ARM for r8a7795. In practice this means that two separate implementations are needed inside the driver to attach to the rather different architecture specific code. CONFIG_IOMMU_DMA=y is needed on 64-bit ARM while on 32-bit ARM the arch specific dma-mapping code is hooked up rather directly. During init 64-bit ARM IPMMU support is relying on IOMMU_OF_DECLARE(). This version of the code is known to build on 32-bit and 64-bit ARM. Some patches that existed in V1 have been folded into: [PATCH v7 00/07] iommu/ipmmu-vmsa: IPMMU multi-arch update V7 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 --- Developed on top of v4.11-rc1 and: [PATCH v7 00/07] iommu/ipmmu-vmsa: IPMMU multi-arch update V7 drivers/iommu/ipmmu-vmsa.c | 291 +++++++++++++++++++++++++++++++++++++------- 1 file changed, 251 insertions(+), 40 deletions(-)