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Fri, 13 Mar 2026 01:25:49 -0500 Received: from satlexmb07.amd.com (10.181.42.216) by satlexmb10.amd.com (10.181.42.219) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Fri, 13 Mar 2026 01:25:48 -0500 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Fri, 13 Mar 2026 01:25:44 -0500 From: Srinivas Neeli To: Vinod Koul , , CC: Frank Li , Michal Simek , "Rob Herring" , Krzysztof Kozlowski , "Conor Dooley" , Suraj Gupta , "Radhey Shyam Pandey" , Thomas Gessler , Folker Schwesinger , Tomi Valkeinen , Kees Cook , Abin Joseph , , , , Subject: [PATCH V2 2/5] dmaengine: xilinx_dma: Move descriptors to done list based on completion bit Date: Fri, 13 Mar 2026 11:55:30 +0530 Message-ID: <20260313062533.421249-3-srinivas.neeli@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260313062533.421249-1-srinivas.neeli@amd.com> References: <20260313062533.421249-1-srinivas.neeli@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D9:EE_|SN7PR12MB7418:EE_ X-MS-Office365-Filtering-Correlation-Id: 732da20a-1bf3-4fd4-ae94-08de80c95ef7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700016|7416014|376014|56012099003|18002099003|22082099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: LDbfELgskV8y2CJcBkhj2DVuPnNEKaWmDZJFQFB50Q2NCqVBBTtlwrO3zU25qsLB9ygB2aPBmw0czeEU94dCMWAnrIdaHYLX9Y+v9+2PALd3GzEZ8udEf5AXhl1QP2GJlZALT5lUPoQmOHC1SgmffkSlG17eKtPDE9+fycqE9YaL5qPlE/pwkZN4Ahtu5L9hzq1GGoOf9FZpNDFuaAaUGesU1+lmD+0J6cxeOSTVpfGvDgTUvh/0PjjW48F8yysnAVYIJxUnamVYoKO4+QR46uAuGLDB5m9d9AXo+IpLDX+ePv+OFbth9F3GvGuMjMxpR1KyWbsAxuOfAozTNz13Ug2rtYg5VicCjlWtDvjQTpmg4rA6TzhbyAz6pGryWfauFGl5ezSvRqo7rjvazE886bC0ffW5XcfoycF9j71WKXlHHEePgou+7RTRaGjgsbs4 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Mar 2026 06:25:50.1923 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 732da20a-1bf3-4fd4-ae94-08de80c95ef7 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D9.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7418 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260313_062602_717865_9444FE92 X-CRM114-Status: GOOD ( 12.95 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In AXIMCDMA scatter-gather mode, the hardware sets the completion bit when a transfer finishes. The driver now checks this bit to free descriptors from the active list and move them to the done list. This is required when interrupt delay timeout Dly_IrqEn is enabled, as interrupts may be triggered before the configured threshold is reached, even if not all descriptors have completed. Signed-off-by: Srinivas Neeli --- drivers/dma/xilinx/xilinx_dma.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 4a83492f2435..00200b4c2372 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -1762,6 +1762,18 @@ static void xilinx_dma_complete_descriptor(struct xilinx_dma_chan *chan) struct xilinx_axidma_tx_segment, node); if (!(seg->hw.status & XILINX_DMA_BD_COMP_MASK) && chan->has_sg) break; + } else if (chan->xdev->dma_config->dmatype == XDMA_TYPE_AXIMCDMA) { + struct xilinx_aximcdma_tx_segment *seg; + bool completed; + + seg = list_last_entry(&desc->segments, + struct xilinx_aximcdma_tx_segment, + node); + completed = (chan->direction == DMA_DEV_TO_MEM) ? + (seg->hw.s2mm_status & XILINX_DMA_BD_COMP_MASK) : + (seg->hw.mm2s_status & XILINX_DMA_BD_COMP_MASK); + if (!completed) + break; } if (chan->has_sg && chan->xdev->dma_config->dmatype != XDMA_TYPE_VDMA) -- 2.43.0