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Thu, 24 Nov 2022 04:28:02 -0600 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Thu, 24 Nov 2022 04:27:58 -0600 From: Sarath Babu Naidu Gaddam To: , , , , CC: , , , , , , , , , Subject: [PATCH V2 1/6] dt-bindings: dmaengine: xilinx_dma:Add xlnx,axistream-connected property Date: Thu, 24 Nov 2022 15:57:40 +0530 Message-ID: <20221124102745.2620370-2-sarath.babu.naidu.gaddam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> References: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT068:EE_|DS0PR12MB6605:EE_ X-MS-Office365-Filtering-Correlation-Id: a901829d-1aaf-494a-24ad-08dace06a21c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(39860400002)(396003)(376002)(136003)(346002)(451199015)(36840700001)(40470700004)(46966006)(54906003)(103116003)(8676002)(110136005)(70206006)(26005)(70586007)(82310400005)(4326008)(86362001)(316002)(2616005)(336012)(47076005)(1076003)(426003)(356005)(81166007)(6666004)(40480700001)(36860700001)(478600001)(82740400003)(186003)(2906002)(5660300002)(8936002)(36756003)(40460700003)(41300700001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Nov 2022 10:28:06.7175 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a901829d-1aaf-494a-24ad-08dace06a21c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT068.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6605 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,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?1750373231815758335?= X-GMAIL-MSGID: =?utf-8?q?1750373231815758335?= From: Radhey Shyam Pandey Add an optional AXI DMA property 'xlnx,axistream-connected'. This can be specified to indicate that DMA is connected to a streaming IP in the hardware design and dma driver needs to do some additional handling i.e pass metadata and perform streaming IP specific configuration. Signed-off-by: Radhey Shyam Pandey Signed-off-by: Sarath Babu Naidu Gaddam Acked-by: Rob Herring --- Changes in V2: 1) Moved xlnx,axistream-connected optional property to under AXI DMA. 2) Removed Acked-by: Rob Herring. --- Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt index d1700a5c36bf..fea5b09a439d 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt @@ -49,6 +49,10 @@ Optional properties for AXI DMA and MCDMA: register as configured in h/w. Takes values {8...26}. If the property is missing or invalid then the default value 23 is used. This is the maximum value that is supported by all IP versions. + +Optional properties for AXI DMA: +- xlnx,axistream-connected: Tells whether DMA is connected to AXI stream IP. + Optional properties for VDMA: - xlnx,flush-fsync: Tells which channel to Flush on Frame sync. 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Nov 2022 10:28:57.4842 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b56ea23d-a5ba-4e6e-c412-08dace06b1d9 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT025.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5976 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,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?1750373144968576258?= X-GMAIL-MSGID: =?utf-8?q?1750373144968576258?= From: Radhey Shyam Pandey Add an optional AXI DMA property 'xlnx,irq-delay'. It specifies interrupt timeout value and causes the DMA engine to generate an interrupt after the delay time period has expired. Timer begins counting at the end of a packet and resets with receipt of a new packet or a timeout event occurs. This property is useful when AXI DMA is connected to the streaming IP i.e axiethernet where inter packet latency is critical while still taking the benefit of interrupt coalescing. Signed-off-by: Radhey Shyam Pandey Acked-by: Rob Herring Signed-off-by: Sarath Babu Naidu Gaddam --- Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt index fea5b09a439d..590d1948f202 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt @@ -52,7 +52,9 @@ Optional properties for AXI DMA and MCDMA: Optional properties for AXI DMA: - xlnx,axistream-connected: Tells whether DMA is connected to AXI stream IP. - +- xlnx,irq-delay: Tells the interrupt delay timeout value. Valid range is from + 0-255. Setting this value to zero disables the delay timer interrupt. + 1 timeout interval = 125 * clock period of SG clock. Optional properties for VDMA: - xlnx,flush-fsync: Tells which channel to Flush on Frame sync. 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Nov 2022 10:29:23.1556 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0a92aac0-fdf2-41b8-d4ba-08dace06c132 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT025.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5860 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,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?1750373180420930845?= X-GMAIL-MSGID: =?utf-8?q?1750373180420930845?= From: Radhey Shyam Pandey Read DT property to check if AXI DMA is connected to streaming IP i.e axiethernet. If connected pass AXI4-Stream control words to dma client using metadata_ops dmaengine API. Signed-off-by: Radhey Shyam Pandey --- drivers/dma/xilinx/xilinx_dma.c | 37 +++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 8cd4e69dc7b4..f783ba86cb09 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -493,6 +493,7 @@ struct xilinx_dma_config { * @s2mm_chan_id: DMA s2mm channel identifier * @mm2s_chan_id: DMA mm2s channel identifier * @max_buffer_len: Max buffer length + * @has_axistream_connected: AXI DMA connected to AXI Stream IP */ struct xilinx_dma_device { void __iomem *regs; @@ -511,6 +512,7 @@ struct xilinx_dma_device { u32 s2mm_chan_id; u32 mm2s_chan_id; u32 max_buffer_len; + bool has_axistream_connected; }; /* Macros */ @@ -623,6 +625,29 @@ static inline void xilinx_aximcdma_buf(struct xilinx_dma_chan *chan, } } +/** + * xilinx_dma_get_metadata_ptr- Populate metadata pointer and payload length + * @tx: async transaction descriptor + * @payload_len: metadata payload length + * @max_len: metadata max length + * Return: The app field pointer. + */ +static void *xilinx_dma_get_metadata_ptr(struct dma_async_tx_descriptor *tx, + size_t *payload_len, size_t *max_len) +{ + struct xilinx_dma_tx_descriptor *desc = to_dma_tx_descriptor(tx); + struct xilinx_axidma_tx_segment *seg; + + *max_len = *payload_len = sizeof(u32) * XILINX_DMA_NUM_APP_WORDS; + seg = list_first_entry(&desc->segments, + struct xilinx_axidma_tx_segment, node); + return seg->hw.app; +} + +static struct dma_descriptor_metadata_ops xilinx_dma_metadata_ops = { + .get_ptr = xilinx_dma_get_metadata_ptr, +}; + /* ----------------------------------------------------------------------------- * Descriptors and segments alloc and free */ @@ -2219,6 +2244,9 @@ static struct dma_async_tx_descriptor *xilinx_dma_prep_slave_sg( segment->hw.control |= XILINX_DMA_BD_EOP; } + if (chan->xdev->has_axistream_connected) + desc->async_tx.metadata_ops = &xilinx_dma_metadata_ops; + return &desc->async_tx; error: @@ -3065,6 +3093,11 @@ static int xilinx_dma_probe(struct platform_device *pdev) } } + if (xdev->dma_config->dmatype == XDMA_TYPE_AXIDMA) { + xdev->has_axistream_connected = + of_property_read_bool(node, "xlnx,axistream-connected"); + } + if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) { err = of_property_read_u32(node, "xlnx,num-fstores", &num_frames); @@ -3090,6 +3123,10 @@ static int xilinx_dma_probe(struct platform_device *pdev) else xdev->ext_addr = false; + /* Set metadata mode */ + if (xdev->has_axistream_connected) + xdev->common.desc_metadata_modes = DESC_METADATA_ENGINE; + /* Set the dma mask bits */ err = dma_set_mask_and_coherent(xdev->dev, DMA_BIT_MASK(addr_width)); if (err < 0) { From patchwork Thu Nov 24 10:27:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sarath Babu Naidu Gaddam X-Patchwork-Id: 25435 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp3308463wrr; Thu, 24 Nov 2022 02:31:31 -0800 (PST) X-Google-Smtp-Source: AA0mqf44EMfwPVD5ZJXeaml+Jc2htlxLpviKYgn1NLzJeBE8/Tk/9s1CttmOZUlIrDpDbCpxkMf0 X-Received: by 2002:a05:6402:c0b:b0:463:a83c:e0af with SMTP id co11-20020a0564020c0b00b00463a83ce0afmr28458147edb.158.1669285890874; Thu, 24 Nov 2022 02:31:30 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1669285890; cv=pass; d=google.com; s=arc-20160816; b=uAodMzorSO44Y8M+EFZBwaNPLjK8l/Iu3oSOYXv7BhV0tvw0dfFXSSupgZdbsoJMVr hBB8qLHkTcdglwxv8ETaWMemZJ3OGVSInkseH3OCdO0GaJfUVZH30/npKys0xC7JuH6G H0RL56X9CJz7CSysK0n21GueWHCymx6CLiFJAU0CPI6MIfoUiEGdSq+FlvAEY/xOd4wq PWVY7WaF6G9iYpDKj99yc3qgG3Q9qIhHRyM28n1OEx8dGRlQ63m84bOPqNnFzgqBRvXR DEtU9SJq6USHd4++YtEzNiBYB5sjXPJd8u+qSx/BOXS3uYam35Ep5nzDj1b7MRYJSU2V 9pVA== ARC-Message-Signature: i=2; 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=NSCysilUQC56RcIe4Av10dPkzjno7xwDAjurkqja+Vc=; b=BXt4mAQm9jNwCNywecZqxx7ZvaTJn+JvC/mqdKJLM37NmQhfj+I8vrub1/2riDs9lY E6iZ5t9vLvumSYouU2yxjvDYCSveeYrAqKpyqPM6ddvvqvuEmx2afAtwefVadtBNATlE MRS/1Ep/8GfEZqNTfUcEmyH0JmzbbKWzwHfmTkSBT31Lqdz6q0FDraVgtrUkBzV1yk0X 5RVBYfNb8IIiT1D6wW/LOWQsgJIljdku5s//kGoQb+UikRygDG9Sigyj82Xl7se049NJ JQN0oDtqfB7rRke5PFM0cpswWZul00ejxbSmpsTPJ663E3rnTdj2xyEq2H0UDMxsIz4x gp7w== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=2zclkWHR; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. 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Thu, 24 Nov 2022 04:28:57 -0600 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB07.amd.com (10.181.41.45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Thu, 24 Nov 2022 02:28:52 -0800 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Thu, 24 Nov 2022 04:28:48 -0600 From: Sarath Babu Naidu Gaddam To: , , , , CC: , , , , , , , , , Subject: [PATCH V2 4/6] dmaengine: xilinx_dma: Increase AXI DMA transaction segment count Date: Thu, 24 Nov 2022 15:57:43 +0530 Message-ID: <20221124102745.2620370-5-sarath.babu.naidu.gaddam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> References: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT021:EE_|BL1PR12MB5875:EE_ X-MS-Office365-Filtering-Correlation-Id: 67fa867b-ec85-4182-55f0-08dace06c189 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Nov 2022 10:29:23.7537 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 67fa867b-ec85-4182-55f0-08dace06c189 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT021.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5875 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,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?1750373121984666366?= X-GMAIL-MSGID: =?utf-8?q?1750373121984666366?= From: Radhey Shyam Pandey Increase AXI DMA transaction segments count to ensure that even in high load we always get a free segment in prepare descriptor for a DMA_SLAVE transaction. Signed-off-by: Radhey Shyam Pandey --- drivers/dma/xilinx/xilinx_dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index f783ba86cb09..6780b1c21414 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -178,7 +178,7 @@ #define XILINX_DMA_BD_SOP BIT(27) #define XILINX_DMA_BD_EOP BIT(26) #define XILINX_DMA_COALESCE_MAX 255 -#define XILINX_DMA_NUM_DESCS 255 +#define XILINX_DMA_NUM_DESCS 512 #define XILINX_DMA_NUM_APP_WORDS 5 /* AXI CDMA Specific Registers/Offsets */ From patchwork Thu Nov 24 10:27:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sarath Babu Naidu Gaddam X-Patchwork-Id: 25436 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp3308499wrr; Thu, 24 Nov 2022 02:31:38 -0800 (PST) X-Google-Smtp-Source: AA0mqf4OSNQulFkRfpsLZvsZYM00HxI4RSPvBPBcn5bW04a01hS1pA2k4MN/ZEh5a6cveppL9tHm X-Received: by 2002:a05:6402:12d5:b0:469:885b:fcfd with SMTP id k21-20020a05640212d500b00469885bfcfdmr14543968edx.177.1669285898207; Thu, 24 Nov 2022 02:31:38 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1669285898; cv=pass; d=google.com; s=arc-20160816; b=thV39bqiurdtgdBsv0neo/7OCI/wm6sxEG897NK8mC8BAmGnOPXarbL4cHl5csA5B7 P/GJbmghqItTDmaQi7S8IkYoGZpo3vj0CsvUezA2asOFH5ejqxZAjxIhAW/S/KPZMRRj XscWVD6YN1h61usjpA1jwRzDCaggHVizLYhUrNgquphMGTrOkgjB+yg+j99qRNC5mc2y JQfzIJqx7SW3e/K12wCGssJRWUuE+o+ZtP7eEnKBoP1TlD9Uy/TcarwE64sCC2TyZC+u sQpgxPywo2F9zpwW8uoasv5JfRk0cR90HzSOoxoN9gf6S0T8kDIIAgMU6/NapSZtE/8M Tq7A== ARC-Message-Signature: i=2; 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=QHxK1Ft+ONeIi/aaMf2yOaMWGf27wZEBgx9HByo+Lwc=; b=KUNrG5mSjTgkqTrETd5td9+yOgoCOozsZM/OVTo15Nn25FufcCWZ5gzXIJX854Pi/N N3lZv9nKflV7DJckKc9fhXttjziXpwv43uzSHaICMwBW1h6fGu8Mp6LVjL9RsgwAA0+f b1CzWCHBC7KIrb7Qt27gEXJ3FrQB95Ois58kh2NNwwHcRGyXv0PXn/bXfv3OofnO6Dc9 t/D+BKglOL5Xly6gklKfrTM3rgmgnq6EQydqDjXZJ6cwyZgwukRy+LeEch5yAShntZXj Ki5Ca6jkJgwdfmY9rjTvFpWMQCBntj6/EjMhzzepeaSLZPSYy4QVMXiyIM3DdZkACk+D 3Yww== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=OGITD77o; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. 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Thu, 24 Nov 2022 04:28:57 -0600 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB06.amd.com (10.181.40.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Thu, 24 Nov 2022 04:28:56 -0600 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Thu, 24 Nov 2022 04:28:53 -0600 From: Sarath Babu Naidu Gaddam To: , , , , CC: , , , , , , , , , Subject: [PATCH V2 5/6] dmaengine: xilinx_dma: Use tasklet_hi_schedule for timing critical usecase Date: Thu, 24 Nov 2022 15:57:44 +0530 Message-ID: <20221124102745.2620370-6-sarath.babu.naidu.gaddam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> References: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT025:EE_|CH3PR12MB7497:EE_ X-MS-Office365-Filtering-Correlation-Id: c99f50e9-1e41-4c83-8cff-08dace06c31b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Nov 2022 10:29:26.4209 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c99f50e9-1e41-4c83-8cff-08dace06c31b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT025.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7497 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,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?1750373129796359449?= X-GMAIL-MSGID: =?utf-8?q?1750373129796359449?= From: Radhey Shyam Pandey Schedule tasklet with high priority to ensure that callback processing is prioritized. It improves throughput for netdev dma clients. Signed-off-by: Radhey Shyam Pandey --- drivers/dma/xilinx/xilinx_dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 6780b1c21414..ce0c151d8f61 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -1839,7 +1839,7 @@ static irqreturn_t xilinx_mcdma_irq_handler(int irq, void *data) spin_unlock(&chan->lock); } - tasklet_schedule(&chan->tasklet); + tasklet_hi_schedule(&chan->tasklet); return IRQ_HANDLED; } From patchwork Thu Nov 24 10:27:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sarath Babu Naidu Gaddam X-Patchwork-Id: 25438 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp3308631wrr; Thu, 24 Nov 2022 02:31:55 -0800 (PST) X-Google-Smtp-Source: AA0mqf7nYjfUiLncexD1r3Jx35QdNJvKVcnNi1e5nB6wMmYMTn8PhEz535LQc5Cyfdz11uPuhZdb X-Received: by 2002:a17:907:1dc6:b0:78d:8533:be13 with SMTP id og6-20020a1709071dc600b0078d8533be13mr26892480ejc.716.1669285915752; Thu, 24 Nov 2022 02:31:55 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1669285915; cv=pass; d=google.com; s=arc-20160816; b=A+MXFcHf11avuybER+vNba8FCs4eeXeBEa1y3oFI/M5OwNnLKtzFyJZLMAnL5sAOAN zUn5/MdMQbsWKOmLqZDmtnI5kOC4DGRQcZEwAWRo9q8iKRdx6PRlvv2HYK4p89unN2uj DQ+Fyz57lDMU9ekRQ9p7fH65k0IPoovegXZKte3zGkqvqIizgkrQLQdAWv7xRehhNFLr DNhHnlpcMwefki4m2XJYUHUCXU2tkDCv8B5wv8XPme6m5O2Hse6pMUasOtUB4Xr2p2zb 9jEbrTtF9D4zrG7CF0X9HAN5E3G1y3r7FvuG0nHpRw/ek4cQBJ6HeSIcjkLf4mXoiPIf nh8w== ARC-Message-Signature: i=2; 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=MK98sISiu20IUkwpbdgv25SGP2dEfMvoSR5tMNcuguM=; b=SbmnW6Zku9s2UX+SPpVOmh8pHvl2WgOwZV5ki3dZilrc8PoY+DEQqSGwtkM/dYP59i +2SBbe6NZAnHJZaIl7BZdHQwZw0QMo69KZEb3HO41zJEjFpkl640RczkR+G4rI9K4Y3A agg+Vf/vcJP1yB9XHfDp4zjtTH9jMRRikmtUpvvv9L+Xu23QlSZvuhBaP5xNKUjBy6rb bqBKWfYWLLSMLi2BJnKFpzs0S3HNkVJ8Gy4xeN0sa5qO0Imhz4zrlrwUbxoBJCLFg7yN g0/Mt2IpKo7BeVFyrpGTJWCAMK0uVycc5MamCADqboxqpAsXEy6W3vYljoMjZbDXZr3/ pOjA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=p9eqCQzR; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. 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Thu, 24 Nov 2022 04:29:21 -0600 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB05.amd.com (10.181.40.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Thu, 24 Nov 2022 04:29:00 -0600 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Thu, 24 Nov 2022 04:28:57 -0600 From: Sarath Babu Naidu Gaddam To: , , , , CC: , , , , , , , , , Subject: [PATCH V2 6/6] dmaengine: xilinx_dma: Program interrupt delay timeout Date: Thu, 24 Nov 2022 15:57:45 +0530 Message-ID: <20221124102745.2620370-7-sarath.babu.naidu.gaddam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> References: <20221124102745.2620370-1-sarath.babu.naidu.gaddam@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT046:EE_|DM6PR12MB4044:EE_ X-MS-Office365-Filtering-Correlation-Id: 3ce5d549-7cc9-43f3-c932-08dace06c7ac X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Nov 2022 10:29:33.9899 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3ce5d549-7cc9-43f3-c932-08dace06c7ac X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT046.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4044 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,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?1750373148587686187?= X-GMAIL-MSGID: =?utf-8?q?1750373148587686187?= From: Radhey Shyam Pandey Program IRQDelay for AXI DMA. The interrupt timeout mechanism causes the DMA engine to generate an interrupt after the delay time period has expired. It enables dmaengine to respond in real-time even though interrupt coalescing is configured. It also remove the placeholder for delay interrupt and merge it with frame completion interrupt. Since by default interrupt delay timeout is disabled this feature addition has no functional impact on VDMA and CDMA IP's. Signed-off-by: Radhey Shyam Pandey Signed-off-by: Sarath Babu Naidu Gaddam --- drivers/dma/xilinx/xilinx_dma.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index ce0c151d8f61..333d68ee3559 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -173,8 +173,10 @@ #define XILINX_DMA_MAX_TRANS_LEN_MAX 23 #define XILINX_DMA_V2_MAX_TRANS_LEN_MAX 26 #define XILINX_DMA_CR_COALESCE_MAX GENMASK(23, 16) +#define XILINX_DMA_CR_DELAY_MAX GENMASK(31, 24) #define XILINX_DMA_CR_CYCLIC_BD_EN_MASK BIT(4) #define XILINX_DMA_CR_COALESCE_SHIFT 16 +#define XILINX_DMA_CR_DELAY_SHIFT 24 #define XILINX_DMA_BD_SOP BIT(27) #define XILINX_DMA_BD_EOP BIT(26) #define XILINX_DMA_COALESCE_MAX 255 @@ -410,6 +412,7 @@ struct xilinx_dma_tx_descriptor { * @stop_transfer: Differentiate b/w DMA IP's quiesce * @tdest: TDEST value for mcdma * @has_vflip: S2MM vertical flip + * @irq_delay: Interrupt delay timeout */ struct xilinx_dma_chan { struct xilinx_dma_device *xdev; @@ -448,6 +451,7 @@ struct xilinx_dma_chan { int (*stop_transfer)(struct xilinx_dma_chan *chan); u16 tdest; bool has_vflip; + u8 irq_delay; }; /** @@ -1560,6 +1564,9 @@ static void xilinx_dma_start_transfer(struct xilinx_dma_chan *chan) if (chan->has_sg) xilinx_write(chan, XILINX_DMA_REG_CURDESC, head_desc->async_tx.phys); + reg &= ~XILINX_DMA_CR_DELAY_MAX; + reg |= chan->irq_delay << XILINX_DMA_CR_DELAY_SHIFT; + dma_ctrl_write(chan, XILINX_DMA_REG_DMACR, reg); xilinx_dma_start(chan); @@ -1887,15 +1894,8 @@ static irqreturn_t xilinx_dma_irq_handler(int irq, void *data) } } - if (status & XILINX_DMA_DMASR_DLY_CNT_IRQ) { - /* - * Device takes too long to do the transfer when user requires - * responsiveness. - */ - dev_dbg(chan->dev, "Inter-packet latency too long\n"); - } - - if (status & XILINX_DMA_DMASR_FRM_CNT_IRQ) { + if (status & (XILINX_DMA_DMASR_FRM_CNT_IRQ | + XILINX_DMA_DMASR_DLY_CNT_IRQ)) { spin_lock(&chan->lock); xilinx_dma_complete_descriptor(chan); chan->idle = true; @@ -2822,6 +2822,8 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev, /* Retrieve the channel properties from the device tree */ has_dre = of_property_read_bool(node, "xlnx,include-dre"); + of_property_read_u8(node, "xlnx,irq-delay", &chan->irq_delay); + chan->genlock = of_property_read_bool(node, "xlnx,genlock-mode"); err = of_property_read_u32(node, "xlnx,datawidth", &value);