From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2FB0C43381 for ; Fri, 29 Mar 2019 14:01:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA1E42184C for ; Fri, 29 Mar 2019 14:01:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729828AbfC2OBv (ORCPT ); Fri, 29 Mar 2019 10:01:51 -0400 Received: from inva020.nxp.com ([92.121.34.13]:39604 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729010AbfC2OAU (ORCPT ); Fri, 29 Mar 2019 10:00:20 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 7552F1A0188; Fri, 29 Mar 2019 15:00:18 +0100 (CET) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 691971A00A7; Fri, 29 Mar 2019 15:00:18 +0100 (CET) Received: from fsr-ub1864-101.ea.freescale.net (fsr-ub1864-101.ea.freescale.net [10.171.74.120]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id D78BD20606; Fri, 29 Mar 2019 15:00:17 +0100 (CET) From: laurentiu.tudor@nxp.com To: netdev@vger.kernel.org, madalin.bucur@nxp.com, roy.pledge@nxp.com, camelia.groza@nxp.com, leoyang.li@nxp.com Cc: davem@davemloft.net, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Laurentiu Tudor Subject: [PATCH 02/13] soc/fsl/bman: map FBPR area in the iommu Date: Fri, 29 Mar 2019 16:00:03 +0200 Message-Id: <20190329140014.8126-3-laurentiu.tudor@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190329140014.8126-1-laurentiu.tudor@nxp.com> References: <20190329140014.8126-1-laurentiu.tudor@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Laurentiu Tudor Add a one-to-one iommu mapping for bman private data memory (FBPR). This is required for BMAN to work without faults behind an iommu. Signed-off-by: Laurentiu Tudor --- drivers/soc/fsl/qbman/bman_ccsr.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/soc/fsl/qbman/bman_ccsr.c b/drivers/soc/fsl/qbman/bman_ccsr.c index 7c3cc968053c..b209c79511bb 100644 --- a/drivers/soc/fsl/qbman/bman_ccsr.c +++ b/drivers/soc/fsl/qbman/bman_ccsr.c @@ -29,6 +29,7 @@ */ #include "bman_priv.h" +#include u16 bman_ip_rev; EXPORT_SYMBOL(bman_ip_rev); @@ -178,6 +179,7 @@ static int fsl_bman_probe(struct platform_device *pdev) int ret, err_irq; struct device *dev = &pdev->dev; struct device_node *node = dev->of_node; + struct iommu_domain *domain; struct resource *res; u16 id, bm_pool_cnt; u8 major, minor; @@ -225,6 +227,15 @@ static int fsl_bman_probe(struct platform_device *pdev) dev_dbg(dev, "Allocated FBPR 0x%llx 0x%zx\n", fbpr_a, fbpr_sz); + /* Create an 1-to-1 iommu mapping for FBPR area */ + domain = iommu_get_domain_for_dev(dev); + if (domain) { + ret = iommu_map(domain, fbpr_a, fbpr_a, fbpr_sz, + IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE); + if (ret) + dev_warn(dev, "failed to iommu_map() %d\n", ret); + } + bm_set_memory(fbpr_a, fbpr_sz); err_irq = platform_get_irq(pdev, 0); -- 2.17.1