Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753003AbdCHMPH (ORCPT ); Wed, 8 Mar 2017 07:15:07 -0500 Received: from mail-pg0-f66.google.com ([74.125.83.66]:35384 "EHLO mail-pg0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752982AbdCHMPD (ORCPT ); Wed, 8 Mar 2017 07:15:03 -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 20:02:13 +0900 Message-Id: <148897093339.16106.5329228083105867675.sendpatchset@little-apple> In-Reply-To: <148897088333.16106.13237004440297956899.sendpatchset@little-apple> References: <148897088333.16106.13237004440297956899.sendpatchset@little-apple> Subject: [PATCH v3 05/09] iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 949 Lines: 29 From: Magnus Damm The r8a7795 IPMMU supports 40-bit bus mastering. Both the coherent DMA mask and the streaming DMA mask are set to unlock the 40-bit address space for coherent allocations and streaming operations. Signed-off-by: Magnus Damm --- Changes since V2: - Updated the code and commit message to use 40 bits instead of 64 bits Changes since V1: - Updated the commit message drivers/iommu/ipmmu-vmsa.c | 1 + 1 file changed, 1 insertion(+) --- 0016/drivers/iommu/ipmmu-vmsa.c +++ work/drivers/iommu/ipmmu-vmsa.c 2017-03-08 18:29:56.390607110 +0900 @@ -1103,6 +1103,7 @@ static int ipmmu_probe(struct platform_d spin_lock_init(&mmu->lock); bitmap_zero(mmu->ctx, IPMMU_CTX_MAX); mmu->features = match->data; + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)); /* Map I/O memory and request IRQ. */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);