From patchwork Thu Sep 2 10:54:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: fengchengwen X-Patchwork-Id: 97772 Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 5CDF8A0C47; Thu, 2 Sep 2021 12:58:32 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 6EA0C4067E; Thu, 2 Sep 2021 12:58:28 +0200 (CEST) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by mails.dpdk.org (Postfix) with ESMTP id A86904003E for ; Thu, 2 Sep 2021 12:58:25 +0200 (CEST) Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4H0d8c2Vnxz8xg2; Thu, 2 Sep 2021 18:54:08 +0800 (CST) Received: from dggpeml500024.china.huawei.com (7.185.36.10) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 2 Sep 2021 18:58:23 +0800 Received: from localhost.localdomain (10.67.165.24) by dggpeml500024.china.huawei.com (7.185.36.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 2 Sep 2021 18:58:23 +0800 From: Chengwen Feng To: , , , , , CC: , , , , , , , , , , Date: Thu, 2 Sep 2021 18:54:12 +0800 Message-ID: <1630580057-29295-4-git-send-email-fengchengwen@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1630580057-29295-1-git-send-email-fengchengwen@huawei.com> References: <1625231891-2963-1-git-send-email-fengchengwen@huawei.com> <1630580057-29295-1-git-send-email-fengchengwen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpeml500024.china.huawei.com (7.185.36.10) X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH v18 3/8] dmadev: introduce DMA device library PMD header X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch introduce DMA device library PMD header which was driver facing APIs for a DMA device. Signed-off-by: Chengwen Feng Acked-by: Bruce Richardson Acked-by: Morten Brørup --- lib/dmadev/meson.build | 1 + lib/dmadev/rte_dmadev.h | 2 ++ lib/dmadev/rte_dmadev_pmd.h | 72 +++++++++++++++++++++++++++++++++++++++++++++ lib/dmadev/version.map | 10 +++++++ 4 files changed, 85 insertions(+) create mode 100644 lib/dmadev/rte_dmadev_pmd.h diff --git a/lib/dmadev/meson.build b/lib/dmadev/meson.build index f421ec1..833baf7 100644 --- a/lib/dmadev/meson.build +++ b/lib/dmadev/meson.build @@ -3,3 +3,4 @@ headers = files('rte_dmadev.h') indirect_headers += files('rte_dmadev_core.h') +driver_sdk_headers += files('rte_dmadev_pmd.h') diff --git a/lib/dmadev/rte_dmadev.h b/lib/dmadev/rte_dmadev.h index 40ae3b1..fad8e00 100644 --- a/lib/dmadev/rte_dmadev.h +++ b/lib/dmadev/rte_dmadev.h @@ -728,6 +728,8 @@ struct rte_dmadev_sge { uint32_t length; /**< The DMA operation length. */ }; +#include "rte_dmadev_core.h" + /* DMA flags to augment operation preparation. */ #define RTE_DMA_OP_FLAG_FENCE (1ull << 0) /**< DMA fence flag. diff --git a/lib/dmadev/rte_dmadev_pmd.h b/lib/dmadev/rte_dmadev_pmd.h new file mode 100644 index 0000000..45141f9 --- /dev/null +++ b/lib/dmadev/rte_dmadev_pmd.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2021 HiSilicon Limited. + */ + +#ifndef _RTE_DMADEV_PMD_H_ +#define _RTE_DMADEV_PMD_H_ + +/** + * @file + * + * RTE DMA Device PMD APIs + * + * Driver facing APIs for a DMA device. These are not to be called directly by + * any application. + */ + +#include "rte_dmadev.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @internal + * Allocates a new dmadev slot for an DMA device and returns the pointer + * to that slot for the driver to use. + * + * @param name + * DMA device name. + * + * @return + * A pointer to the DMA device slot case of success, + * NULL otherwise. + */ +__rte_internal +struct rte_dmadev * +rte_dmadev_pmd_allocate(const char *name); + +/** + * @internal + * Release the specified dmadev. + * + * @param dev + * Device to be released. + * + * @return + * - 0 on success, negative on error + */ +__rte_internal +int +rte_dmadev_pmd_release(struct rte_dmadev *dev); + +/** + * @internal + * Return the DMA device based on the device name. + * + * @param name + * DMA device name. + * + * @return + * A pointer to the DMA device slot case of success, + * NULL otherwise. + */ +__rte_internal +struct rte_dmadev * +rte_dmadev_get_device_by_name(const char *name); + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_DMADEV_PMD_H_ */ diff --git a/lib/dmadev/version.map b/lib/dmadev/version.map index 2e37882..d027eea 100644 --- a/lib/dmadev/version.map +++ b/lib/dmadev/version.map @@ -22,3 +22,13 @@ EXPERIMENTAL { local: *; }; + +INTERNAL { + global: + + rte_dmadev_get_device_by_name; + rte_dmadev_pmd_allocate; + rte_dmadev_pmd_release; + + local: *; +};