From patchwork Mon Oct 9 12:02:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Amit Prakash Shukla X-Patchwork-Id: 132422 X-Patchwork-Delegate: thomas@monjalon.net 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 A5A8E4233C; Mon, 9 Oct 2023 14:03:07 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 93AB040691; Mon, 9 Oct 2023 14:03:07 +0200 (CEST) Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by mails.dpdk.org (Postfix) with ESMTP id 247FC40691 for ; Mon, 9 Oct 2023 14:03:05 +0200 (CEST) Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 398NU4ma010336; Mon, 9 Oct 2023 05:03:05 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=pfpt0220; bh=6cHAIhPn9MrK8xuuZ3YvzO3/UZRbEigCrq/LMoZ8I84=; b=EaBKKzBxs/vXk8GKneHVGDNdklI86Up7c4KS0kunCm4aDaUWXecI8E1gPDSexYyvQ7Wp vAdIcD0A6/pKRjv34ud9QsSSu/A0HcxkPqvwlVFnpIN18X0sbjlNj8elNa8n3Xmnp741 M1rWPF0Il7HIyCxBUm7H+8S62GAYUKADaBr7xiXnRr1/livEkxLRdtthFzjXSkPxdh8t dsjNibQdSmjTor0QftFi12EUrkBp1IaINMzFSZVbr+GeW14TuyKwxi34nqsUU9l4taAO D7qktageoYxtNXKU9X+jDLAtT2I6N/FoV6rkY/rNbv/qEfLSMIRho5GxgzQA4eJtWqnB 1A== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3tkh9sm35k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Mon, 09 Oct 2023 05:03:05 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Mon, 9 Oct 2023 05:03:03 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Mon, 9 Oct 2023 05:03:03 -0700 Received: from localhost.localdomain (unknown [10.28.36.157]) by maili.marvell.com (Postfix) with ESMTP id 30D353F7051; Mon, 9 Oct 2023 05:02:58 -0700 (PDT) From: Amit Prakash Shukla To: Chengwen Feng , Kevin Laatz , Bruce Richardson CC: , , , , , , , , , , , Amit Prakash Shukla Subject: [PATCH v4 1/2] dmadev: offload to auto free DMA buffer Date: Mon, 9 Oct 2023 17:32:35 +0530 Message-ID: <20231009120236.1641008-2-amitprakashs@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231009120236.1641008-1-amitprakashs@marvell.com> References: <20230928115031.259592-1-amitprakashs@marvell.com> <20231009120236.1641008-1-amitprakashs@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: 1wyXw3UQy8tjkXA3O4ty4EVqrATok_fB X-Proofpoint-ORIG-GUID: 1wyXw3UQy8tjkXA3O4ty4EVqrATok_fB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-09_11,2023-10-09_01,2023-05-22_02 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 This changeset adds support in DMA library to auto free DMA buffer by hardware. On a supported hardware, application can pass on the mempool information as part of vchan config. Signed-off-by: Amit Prakash Shukla Acked-by: Morten Brørup Acked-by: Anoob Joseph Acked-by: Chengwen Feng Acked-by: Chengwen Feng Signed-off-by: Amit Prakash Shukla Acked-by: Morten Brørup Acked-by: Anoob Joseph --- lib/dmadev/rte_dmadev.h | 43 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/lib/dmadev/rte_dmadev.h b/lib/dmadev/rte_dmadev.h index b157ab7600..493263a5d6 100644 --- a/lib/dmadev/rte_dmadev.h +++ b/lib/dmadev/rte_dmadev.h @@ -269,6 +269,14 @@ int16_t rte_dma_next_dev(int16_t start_dev_id); * must ensure that all memory addresses are valid and accessible by HW. */ #define RTE_DMA_CAPA_HANDLES_ERRORS RTE_BIT64(6) +/** Support auto free for source buffer once mem to dev transfer is completed. + * + * @note Even though the DMA driver has this capability, it may not support all + * mempool drivers. If the mempool is not supported by the DMA driver, + * rte_dma_vchan_setup() will fail. + */ +#define RTE_DMA_CAPA_M2D_AUTO_FREE RTE_BIT64(7) + /** Support copy operation. * This capability start with index of 32, so that it could leave gap between * normal capability and ops capability. @@ -552,6 +560,26 @@ struct rte_dma_port_param { uint64_t reserved[2]; /**< Reserved for future fields. */ }; +/** + * A structure used for offload auto free params. + */ +struct rte_dma_auto_free_param { + union { + struct { + /** + * Mempool from which buffer is allocated. Mempool info + * is used for freeing buffer by hardware. + * + * @note If the mempool is not supported by the DMA device, + * rte_dma_vchan_setup() will fail. + */ + struct rte_mempool *pool; + } m2d; + }; + /** Reserved for future fields. */ + uint64_t reserved[2]; +}; + /** * A structure used to configure a virtual DMA channel. * @@ -581,6 +609,14 @@ struct rte_dma_vchan_conf { * @see struct rte_dma_port_param */ struct rte_dma_port_param dst_port; + /** Buffer params to auto free buffer by hardware. To free the buffer + * by hardware, RTE_DMA_OP_FLAG_AUTO_FREE must be set while calling + * rte_dma_copy and rte_dma_copy_sg(). + * + * @see RTE_DMA_OP_FLAG_AUTO_FREE + * @see struct rte_dma_auto_free_param + */ + struct rte_dma_auto_free_param auto_free; }; /** @@ -818,6 +854,13 @@ struct rte_dma_sge { * capability bit for this, driver should not return error if this flag was set. */ #define RTE_DMA_OP_FLAG_LLC RTE_BIT64(2) +/** Auto free buffer flag. + * Operation with this flag must issue command to hardware to free the DMA + * buffer after DMA transfer is completed. + * + * @see struct rte_dma_vchan_conf::auto_free + */ +#define RTE_DMA_OP_FLAG_AUTO_FREE RTE_BIT64(3) /**@}*/ /**