From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 65BACC48297 for ; Mon, 12 Feb 2024 17:51:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PnOFrG4nScsbfqoBT8G5JIa7foraMPeNzeiM5X2yVlk=; b=mzYGXdbVmmg8QI i8oWVbJ/xuHYXj6JqTdnSrkKJnscaff1zqvwbPFpMJzdGeTfHZzJ6RPqvEh5iuNmcKq0/hhqVDeJ2 4SKybvC63rHoItDSE8Em56VKVyySvXQIWepVXdAGKxLOSCQt7ncOuoEBAXKCf/EzkywpiYUKJglei tE4uTd0Cv3q2QxH5U1y95R9AOwlakkCv61ppKbksPwg6xEo+tllWmwTmPZJHcdRV0Eq5fB4beh4Ti hdBJc7wkO6G6aiGtJ7LS3eOipMtabAjmMCBxx2BT1MXvDT+4rx66ccW8N+Rt0E3wtz8Zj2nCI6PjJ jr6gZuHEmO9mXPySWszw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZaT5-00000006WQK-1SL7; Mon, 12 Feb 2024 17:51:47 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZaT2-00000006WOn-2SUZ for linux-mtd@lists.infradead.org; Mon, 12 Feb 2024 17:51:46 +0000 Received: from pps.filterd (m0369457.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41CHPxGr027428; Mon, 12 Feb 2024 18:51:38 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=7EgcsVO6falgJZLPBOMxl9PtlOXDfK5LsUZXJt7kC2w=; b=df J186ZkfxPnp6+AaHR4CZsMPB2hNYQkaF9c3ANzqr+l36qlxZGrcYI/pG75iAj53D 4bStrMflP9gYRzTrbcfQJ3rsFxJJgA3+v+zUpMppGxo9NpiErlcokRERlxnjvFpf 3F5m96sMZZhpqHjsglG92FCC2Ka66kMv8yGx4ese4eiTcwLdk76aRzZQxszBPtDE S93W5zWXaqP92yksyjFmp5/8GcPikfv319clDVDUzA49+MtNvWoWZgaHFVsElKxM w6hsEthYhAfmt9Ju6QjjKU+vz2yL7CgHpGrpcoLMsBrIiicE/LnPmQbgieuIPn/k UuCmy6ghnrWYP9W5LXDQ== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3w6mynd48m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 12 Feb 2024 18:51:37 +0100 (CET) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 927234002D; Mon, 12 Feb 2024 18:51:34 +0100 (CET) Received: from Webmail-eu.st.com (shfdag1node3.st.com [10.75.129.71]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id D898C257A8E; Mon, 12 Feb 2024 18:50:51 +0100 (CET) Received: from localhost (10.201.22.200) by SHFDAG1NODE3.st.com (10.75.129.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 12 Feb 2024 18:50:51 +0100 From: Christophe Kerello To: , , , , , , CC: , , , , Christophe Kerello Subject: [PATCH 09/12] mtd: rawnand: stm32_fmc2: use dma_get_slave_caps to get DMA max burst Date: Mon, 12 Feb 2024 18:48:19 +0100 Message-ID: <20240212174822.77734-10-christophe.kerello@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240212174822.77734-1-christophe.kerello@foss.st.com> References: <20240212174822.77734-1-christophe.kerello@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.22.200] X-ClientProxiedBy: SHFCAS1NODE1.st.com (10.75.129.72) To SHFDAG1NODE3.st.com (10.75.129.71) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-12_15,2024-02-12_03,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240212_095144_934572_46822C39 X-CRM114-Status: GOOD ( 12.43 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org use dma_get_slave_caps API to get the max burst size of a DMA channel. For MP1 SOCs, MDMA is used and the max burst size is 128. For MP25 SOC, DMA3 is used and the max burst size is 64. Signed-off-by: Christophe Kerello --- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 29 +++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c index 88811139aaf5..a7db7b675514 100644 --- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c +++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c @@ -264,6 +264,8 @@ struct stm32_fmc2_nfc { struct sg_table dma_ecc_sg; u8 *ecc_buf; int dma_ecc_len; + u32 tx_dma_max_burst; + u32 rx_dma_max_burst; struct completion complete; struct completion dma_data_complete; @@ -347,20 +349,26 @@ static int stm32_fmc2_nfc_select_chip(struct nand_chip *chip, int chipnr) stm32_fmc2_nfc_setup(chip); stm32_fmc2_nfc_timings_init(chip); - if (nfc->dma_tx_ch && nfc->dma_rx_ch) { + if (nfc->dma_tx_ch) { memset(&dma_cfg, 0, sizeof(dma_cfg)); - dma_cfg.src_addr = nfc->data_phys_addr[nfc->cs_sel]; dma_cfg.dst_addr = nfc->data_phys_addr[nfc->cs_sel]; - dma_cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; dma_cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - dma_cfg.src_maxburst = 32; - dma_cfg.dst_maxburst = 32; + dma_cfg.dst_maxburst = nfc->tx_dma_max_burst / + dma_cfg.dst_addr_width; ret = dmaengine_slave_config(nfc->dma_tx_ch, &dma_cfg); if (ret) { dev_err(nfc->dev, "tx DMA engine slave config failed\n"); return ret; } + } + + if (nfc->dma_rx_ch) { + memset(&dma_cfg, 0, sizeof(dma_cfg)); + dma_cfg.src_addr = nfc->data_phys_addr[nfc->cs_sel]; + dma_cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + dma_cfg.src_maxburst = nfc->rx_dma_max_burst / + dma_cfg.src_addr_width; ret = dmaengine_slave_config(nfc->dma_rx_ch, &dma_cfg); if (ret) { @@ -1545,6 +1553,7 @@ static int stm32_fmc2_nfc_setup_interface(struct nand_chip *chip, int chipnr, static int stm32_fmc2_nfc_dma_setup(struct stm32_fmc2_nfc *nfc) { + struct dma_slave_caps caps; int ret = 0; nfc->dma_tx_ch = dma_request_chan(nfc->dev, "tx"); @@ -1557,6 +1566,11 @@ static int stm32_fmc2_nfc_dma_setup(struct stm32_fmc2_nfc *nfc) goto err_dma; } + ret = dma_get_slave_caps(nfc->dma_tx_ch, &caps); + if (ret) + return ret; + nfc->tx_dma_max_burst = caps.max_burst; + nfc->dma_rx_ch = dma_request_chan(nfc->dev, "rx"); if (IS_ERR(nfc->dma_rx_ch)) { ret = PTR_ERR(nfc->dma_rx_ch); @@ -1567,6 +1581,11 @@ static int stm32_fmc2_nfc_dma_setup(struct stm32_fmc2_nfc *nfc) goto err_dma; } + ret = dma_get_slave_caps(nfc->dma_rx_ch, &caps); + if (ret) + return ret; + nfc->rx_dma_max_burst = caps.max_burst; + nfc->dma_ecc_ch = dma_request_chan(nfc->dev, "ecc"); if (IS_ERR(nfc->dma_ecc_ch)) { ret = PTR_ERR(nfc->dma_ecc_ch); -- 2.25.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/