From patchwork Mon Mar 13 17:04:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 68988 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:5915:0:0:0:0:0 with SMTP id v21csp1312208wrd; Mon, 13 Mar 2023 10:29:01 -0700 (PDT) X-Google-Smtp-Source: AK7set866jip0sb6r4SSQtVtxRNd3D+pGTnr36QaH8niwMem3gPLjqmUfJ0+qrt74QumAGH3KXgI X-Received: by 2002:a05:6a20:c126:b0:cd:74aa:df55 with SMTP id bh38-20020a056a20c12600b000cd74aadf55mr29208406pzb.25.1678728541504; Mon, 13 Mar 2023 10:29:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1678728541; cv=none; d=google.com; s=arc-20160816; b=awjBk6lWqpWWJf/dj2n1KR6b5p33QusHjjR1HI69eiPj/Q4sz69Yl7PGmC7yzNnsei AWFPZ2VIMVjWZL9jHjUWfImQtdxzFgtMkpenUbvEbP478j90g3plZGYIPuutQU9EyYS5 +UtNXElLnHv/bQ7J5UVkv6e4ra/3cv4dD5NMNEAo4X7606JwglPVqqANsKqlYhW8JMNk mSsMXUkFxwbnl0S+e5a1Dr90tIIPYcPEBe24BiMgdhu9825iwl4ZFQKoi1UBk0zFc5sY E9Myb6iPymUVvZ7h4sOQF4/hXIejgdgCE6mjXx+jUqHrJK5+JH6kyF1hGSgQVmuvQeuf FkvA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=jDKB5Q7vJgDXwL8IcHnmzpLKNUON50C1FbjIwsweUyo=; b=bAKoDrzaCH8Nn+Yhzx4gzXTMbhD1sWnHxAJ+uTEgXLIsFDYk81U05dDsvRRBc3HPXG oCTHl+0aM5cCCdYOS06ajzGJKSprnVJMprOk5F0lrXNnQR/Sts5wgtpObQnS+HddMdtr QwC8ACxxF3eMcqYaRW53KZayB3hDiAmvBgRBFsRI7EB0ZL3kt+GHfWvif4Rd7WTwsBEg myhrulAFD9l4YZeG9Bj+PFjwqQ06nub+hSZ3W9vQLxsbc+S1xKGnNb4DQ1k5wHtXVkUJ BE2gbl6MpcfUWvzFRu9ewohNIEdKAe43V71Bv3jza6IJTjnamY7y8JYRVwdi1rOQAV97 mcuw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="Q/qc6WSx"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id v190-20020a6389c7000000b00508d21e0f66si46pgd.282.2023.03.13.10.28.49; Mon, 13 Mar 2023 10:29:01 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="Q/qc6WSx"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230013AbjCMRR0 (ORCPT + 99 others); Mon, 13 Mar 2023 13:17:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231551AbjCMRRM (ORCPT ); Mon, 13 Mar 2023 13:17:12 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5E2C80902; Mon, 13 Mar 2023 10:16:42 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 417C3B811B2; Mon, 13 Mar 2023 17:15:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02C2CC4339E; Mon, 13 Mar 2023 17:15:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1678727749; bh=do8+kPrEABA/+sArd48GuvtE5icgNiKsJ/7FNgFAelM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q/qc6WSx2eaxfWUOaCR+Jt4U8paKMjj7KnDAWCX+J3H2/KXdEoE/A1nkimEhlbjId Y209A1IzajyXtQfyP7cyCqN9F2qVAT6MTQVxk0cpCzRZYiLgRB0Ee1JeM29PeOievu vJHJWiMJTTSYjMJN799lYCJ47zl+b3YXI+ZhbcAntWpxIDHvUgOQn/bVWv0cGauw55 7T8uruloIifyaQnZb+FNgLYkHX+pkDSOqrXpuWmj6P7yHRglLFseQOd1MMQfcDCgpY LOyCZ5qowffCRz1O5QVnL7JcyO0U2rXTxEH9LLMEs3ivku9ahB4G+knIWDtqNed30M KAgELShJAfwYA== From: Jisheng Zhang To: Eugeniy Paltsev , Vinod Koul Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 11/11] dmaengine: dw-axi-dmac: support polled mode Date: Tue, 14 Mar 2023 01:04:50 +0800 Message-Id: <20230313170450.897-12-jszhang@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230313170450.897-1-jszhang@kernel.org> References: <20230313170450.897-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760274459118218720?= X-GMAIL-MSGID: =?utf-8?q?1760274459118218720?= Run in polled mode if the DMA_PREP_INTERRUPT flag is not provided. Signed-off-by: Jisheng Zhang --- drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 11 ++++++++++- drivers/dma/dw-axi-dmac/dw-axi-dmac.h | 1 + 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index 1d00793a83bf..8daeb22d4560 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -383,7 +383,10 @@ static void axi_chan_block_xfer_start(struct axi_dma_chan *chan, write_chan_llp(chan, first->hw_desc[0].llp | lms); irq_mask = DWAXIDMAC_IRQ_DMA_TRF | DWAXIDMAC_IRQ_ALL_ERR; - axi_chan_irq_sig_set(chan, irq_mask); + if (chan->polled) + axi_chan_irq_sig_set(chan, DWAXIDMAC_IRQ_NONE); + else + axi_chan_irq_sig_set(chan, irq_mask); /* Generate 'suspend' status but don't generate interrupt */ irq_mask |= DWAXIDMAC_IRQ_SUSPENDED; @@ -714,6 +717,7 @@ dw_axi_dma_chan_prep_cyclic(struct dma_chan *dchan, dma_addr_t dma_addr, if (unlikely(!desc)) goto err_desc_get; + chan->polled = !(flags & DMA_PREP_INTERRUPT); chan->direction = direction; desc->chan = chan; chan->cyclic = true; @@ -796,6 +800,7 @@ dw_axi_dma_chan_prep_slave_sg(struct dma_chan *dchan, struct scatterlist *sgl, desc->chan = chan; desc->length = 0; + chan->polled = !(flags & DMA_PREP_INTERRUPT); chan->direction = direction; for_each_sg(sgl, sg, sg_len, i) { @@ -859,6 +864,7 @@ dma_chan_prep_dma_memcpy(struct dma_chan *dchan, dma_addr_t dst_adr, if (unlikely(!desc)) goto err_desc_get; + chan->polled = !(flags & DMA_PREP_INTERRUPT); desc->chan = chan; num = 0; desc->length = 0; @@ -1139,6 +1145,9 @@ dma_chan_tx_status(struct dma_chan *dchan, dma_cookie_t cookie, u32 length; u32 len; + if (chan->polled) + dw_axi_dma_handle_ch(chan); + status = dma_cookie_status(dchan, cookie, txstate); if (status == DMA_COMPLETE || !txstate) return status; diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h index f57961620d2d..e4fbc38446ec 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h @@ -54,6 +54,7 @@ struct axi_dma_chan { bool cyclic; /* these other elements are all protected by vc.lock */ bool is_paused; + bool polled; }; struct dw_axi_dma {