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=-6.7 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 D9CEECA9EAF for ; Thu, 24 Oct 2019 12:41:48 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AFC9321655 for ; Thu, 24 Oct 2019 12:41:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="Aukd6gW6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFC9321655 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 8BFF5153E; Thu, 24 Oct 2019 12:41:48 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id CD8AA1535 for ; Thu, 24 Oct 2019 12:41:45 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from EUR01-DB5-obe.outbound.protection.outlook.com (mail-eopbgr150084.outbound.protection.outlook.com [40.107.15.84]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id CEF0D89C for ; Thu, 24 Oct 2019 12:41:44 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=P8O+uE8l0sPJ/qUIcG/3Fve7V062q5cGrlsePzuYuuCxdS0QKsQnyXdL58M50AwIxaKRY/Hb/katl4u1KNNNidS9rd/Vlh7dqwa+wB6/EqVyHj9heFcJDGHR6LnFHgSpChY/FpY2DzuEaycQF0qkVYea4jQkmFWOH3eTDUtSDV51Oi1O1kpJRsV/dX4FV4gZvIbiBklwjdcY0tyWoqgvdGcxI4EasHLsecj8iKT/KWc07yTJTU9ApYt+xFz8Mq61EkkdnLAUzlGuUtoriR7Qb2NiJLb/jrV09G5chXzyubZSHzhFiv83dPaZL/9VD0kfGBOCrKFh35a9e2g05JcAaA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=BSBFRP4DRoFcrSgqeCUmxnwOPMiOtLBJI5VddwSuYpg=; b=fCQ3a33ZDe9/HNMivtPJLdMmDwlnPttnoBPSY2sAdeyHZXp84n1KhubhSV/8wuGCog4MuZaMxYl8zz8QJ3wAd3wme7mlglyI4DDkR+9kGPrx3gH+OhLCkhnQzVlcD9ECFa34N+UF3TMO9W+L4g3SjzFpTEt8iGmz0fCoYPgpxRqCbyfLQdJ/4GtcsTd+pEIfiPlL49/ZIPCD5mQxv4qkAdqy5nf1E5CCCuuOA3Ic2c8g4V3sUWlFVlz0vhjqM1Y0QlWw+1mOlr33FQHy4jBYqfPj0Z8dOc8syFcfamq1T+gFjZxaTNhOPRO2vq4sPFNShuUsFfznzEqbv8WR6+WrkA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=BSBFRP4DRoFcrSgqeCUmxnwOPMiOtLBJI5VddwSuYpg=; b=Aukd6gW66OHpr96XZnLlvuSdnLKNqnwoSqTvaiQrqpBVoEYgVAnpCHieKZmNL45mnLgRs5nNFpqz8PALLNvwdLrFJ48PuGlUYCnGgEA2SP/vaunsF/93wlzUww+8TYNiwwkqUDnAT+A1aAzm3JGawcAkPltCHm3Ej1ITnF0hNwY= Received: from VI1PR04MB5134.eurprd04.prod.outlook.com (20.177.51.208) by VI1PR04MB4701.eurprd04.prod.outlook.com (20.177.48.154) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2387.22; Thu, 24 Oct 2019 12:41:42 +0000 Received: from VI1PR04MB5134.eurprd04.prod.outlook.com ([fe80::10f0:af2c:76ac:dfb]) by VI1PR04MB5134.eurprd04.prod.outlook.com ([fe80::10f0:af2c:76ac:dfb%7]) with mapi id 15.20.2347.030; Thu, 24 Oct 2019 12:41:42 +0000 From: Laurentiu Tudor To: "hch@lst.de" , "joro@8bytes.org" , Ioana Ciocoi Radulescu , "linux-kernel@vger.kernel.org" , "iommu@lists.linux-foundation.org" , "netdev@vger.kernel.org" , Ioana Ciornei Subject: [PATCH v2 1/3] dma-mapping: introduce new dma unmap and sync api variants Thread-Topic: [PATCH v2 1/3] dma-mapping: introduce new dma unmap and sync api variants Thread-Index: AQHVimhiysgNu4P7eUCr9wwTZY4WUQ== Date: Thu, 24 Oct 2019 12:41:41 +0000 Message-ID: <20191024124130.16871-2-laurentiu.tudor@nxp.com> References: <20191024124130.16871-1-laurentiu.tudor@nxp.com> In-Reply-To: <20191024124130.16871-1-laurentiu.tudor@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: LO2P265CA0278.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:a1::26) To VI1PR04MB5134.eurprd04.prod.outlook.com (2603:10a6:803:5f::16) x-mailer: git-send-email 2.17.1 authentication-results: spf=none (sender IP is ) smtp.mailfrom=laurentiu.tudor@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [89.37.124.34] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: f11b17da-f791-4a9e-fa40-08d7587f854e x-ms-traffictypediagnostic: VI1PR04MB4701:|VI1PR04MB4701: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:862; x-forefront-prvs: 0200DDA8BE x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(136003)(376002)(346002)(366004)(396003)(39860400002)(199004)(189003)(66556008)(64756008)(66476007)(66946007)(66446008)(1076003)(8676002)(8936002)(81156014)(50226002)(2201001)(305945005)(66066001)(7736002)(2501003)(54906003)(99286004)(81166006)(86362001)(186003)(5660300002)(14454004)(76176011)(316002)(52116002)(6506007)(2616005)(256004)(14444005)(26005)(102836004)(386003)(6512007)(71200400001)(71190400001)(446003)(11346002)(6486002)(6436002)(25786009)(486006)(110136005)(478600001)(44832011)(4326008)(476003)(2906002)(6636002)(6116002)(3846002)(36756003); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR04MB4701; H:VI1PR04MB5134.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: MDxOGLHBtqpx+ZiUv2yY/8G/NH09ljTyrtXcV3DzcmpfJv2XT50FbGdU0GSbjU3moEsMnZuPkWO98lZxRCFamfPvSjIHfbGB+mSHEn7CHqKRauSBVWdDqwfTRagli9nWrep7OrVWasZSY2/B/tE0ZadItxRm2BN7EmKLE492ujR0OMj58d0sXvvgHVCdgWNcF0EsYQ8hwKzeauUdirHpboPqxsHZC4b65xt/MCVDcjjhHbfXw5CL6Ge2yPlgEJi+9lMVzpVvFwszd+VuUteB5CLI2TBbyMnA3s3SpuxaBueyrcKSJqG3aF3arxI0vdQs0YnC77i02wMEdD93395utiiI5IU5hUan2nIfYjTVx3KUMZr5YAyDkFG9FzqduToeGubXEz1+YAjMORc333UOnJ3X5JtYt3d39pT/sYdsUxXcJ+NHAPRs++ZMagXl60FC Content-ID: MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: f11b17da-f791-4a9e-fa40-08d7587f854e X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Oct 2019 12:41:41.9069 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: hF0RoxaKnWbBDFqnLfkQUa3qvd8Dl6vhuUnDvAunxOMWvpXP2zyDXMNhN4F3eXCTFFnw2El2tahaxiRi4RU2pw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB4701 Cc: Madalin Bucur , Leo Li , "robin.murphy@arm.com" , "davem@davemloft.net" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org From: Laurentiu Tudor Introduce a few new dma unmap and sync variants that, on top of the original variants, return the virtual address corresponding to the input dma address. In order to implement this a new dma map op is added and used: void *get_virt_addr(dev, dma_handle); It does the actual conversion of an input dma address to the output virtual address. Signed-off-by: Laurentiu Tudor --- include/linux/dma-mapping.h | 55 +++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 4a1c4fca475a..ae7bb8a84b9d 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -132,6 +132,7 @@ struct dma_map_ops { u64 (*get_required_mask)(struct device *dev); size_t (*max_mapping_size)(struct device *dev); unsigned long (*get_merge_boundary)(struct device *dev); + void *(*get_virt_addr)(struct device *dev, dma_addr_t dma_handle); }; #define DMA_MAPPING_ERROR (~(dma_addr_t)0) @@ -304,6 +305,21 @@ static inline void dma_unmap_page_attrs(struct device *dev, dma_addr_t addr, debug_dma_unmap_page(dev, addr, size, dir); } +static inline struct page * +dma_unmap_page_attrs_desc(struct device *dev, dma_addr_t addr, size_t size, + enum dma_data_direction dir, unsigned long attrs) +{ + const struct dma_map_ops *ops = get_dma_ops(dev); + void *ptr = NULL; + + if (ops && ops->get_virt_addr) + ptr = ops->get_virt_addr(dev, addr); + + dma_unmap_page_attrs(dev, addr, size, dir, attrs); + + return ptr ? virt_to_page(ptr) : NULL; +} + /* * dma_maps_sg_attrs returns 0 on error and > 0 on success. * It should never return a value < 0. @@ -390,6 +406,21 @@ static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, debug_dma_sync_single_for_cpu(dev, addr, size, dir); } +static inline void * +dma_sync_single_for_cpu_desc(struct device *dev, dma_addr_t addr, size_t size, + enum dma_data_direction dir) +{ + const struct dma_map_ops *ops = get_dma_ops(dev); + void *ptr = NULL; + + if (ops && ops->get_virt_addr) + ptr = ops->get_virt_addr(dev, addr); + + dma_sync_single_for_cpu(dev, addr, size, dir); + + return ptr; +} + static inline void dma_sync_single_for_device(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) @@ -500,6 +531,12 @@ static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { } + +static inline void * +dma_sync_single_for_cpu_desc(struct device *dev, dma_addr_t addr, size_t size, + enum dma_data_direction dir) +{ +} static inline void dma_sync_single_for_device(struct device *dev, dma_addr_t addr, size_t size, enum dma_data_direction dir) { @@ -594,6 +631,21 @@ static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr, return dma_unmap_page_attrs(dev, addr, size, dir, attrs); } +static inline void * +dma_unmap_single_attrs_desc(struct device *dev, dma_addr_t addr, size_t size, + enum dma_data_direction dir, unsigned long attrs) +{ + const struct dma_map_ops *ops = get_dma_ops(dev); + void *ptr = NULL; + + if (ops && ops->get_virt_addr) + ptr = ops->get_virt_addr(dev, addr); + + dma_unmap_single_attrs(dev, addr, size, dir, attrs); + + return ptr; +} + static inline void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t addr, unsigned long offset, size_t size, enum dma_data_direction dir) @@ -610,10 +662,13 @@ static inline void dma_sync_single_range_for_device(struct device *dev, #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0) #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, 0) +#define dma_unmap_single_desc(d, a, s, r) \ + dma_unmap_single_attrs_desc(d, a, s, r, 0) #define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, 0) #define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, 0) #define dma_map_page(d, p, o, s, r) dma_map_page_attrs(d, p, o, s, r, 0) #define dma_unmap_page(d, a, s, r) dma_unmap_page_attrs(d, a, s, r, 0) +#define dma_unmap_page_desc(d, a, s, r) dma_unmap_page_attrs_desc(d, a, s, r, 0) #define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, 0) #define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, 0) -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu