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dmarc=none action=none header.from=nxp.com; Received: from VE1PR04MB6688.eurprd04.prod.outlook.com (2603:10a6:803:127::25) by VI1PR0401MB2288.eurprd04.prod.outlook.com (2603:10a6:800:28::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4308.25; Tue, 13 Jul 2021 10:25:58 +0000 Received: from VE1PR04MB6688.eurprd04.prod.outlook.com ([fe80::a978:6f38:2bce:9076]) by VE1PR04MB6688.eurprd04.prod.outlook.com ([fe80::a978:6f38:2bce:9076%5]) with mapi id 15.20.4308.027; Tue, 13 Jul 2021 10:25:58 +0000 From: Robin Gong To: vkoul@kernel.org, mark.rutland@arm.com, broonie@kernel.org, robh+dt@kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, shawnguo@kernel.org, festevam@gmail.com, s.hauer@pengutronix.de, martin.fuzzey@flowbird.group, u.kleine-koenig@pengutronix.de, dan.j.williams@intel.com, matthias.schiffer@ew.tq-group.com, frieder.schrempf@kontron.de, m.felsch@pengutronix.de, l.stach@pengutronix.de, xiaoning.wang@nxp.com Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v15 05/12] dmaengine: dma: imx-sdma: add fw_loaded and is_ram_script Date: Wed, 14 Jul 2021 02:41:42 +0800 Message-Id: <1626201709-19643-6-git-send-email-yibin.gong@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1626201709-19643-1-git-send-email-yibin.gong@nxp.com> References: <1626201709-19643-1-git-send-email-yibin.gong@nxp.com> X-ClientProxiedBy: SG2PR06CA0198.apcprd06.prod.outlook.com (2603:1096:4:1::30) To VE1PR04MB6688.eurprd04.prod.outlook.com (2603:10a6:803:127::25) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from robin-OptiPlex-790.ap.freescale.net (119.31.174.66) by SG2PR06CA0198.apcprd06.prod.outlook.com (2603:1096:4:1::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.4308.20 via Frontend Transport; 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Signed-off-by: Robin Gong Reviewed-by: Lucas Stach Acked-by: Vinod Koul --- drivers/dma/imx-sdma.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 665ccbf..639a783 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -435,6 +435,7 @@ struct sdma_channel { enum dma_status status; struct imx_dma_data data; struct work_struct terminate_worker; + bool is_ram_script; }; #define IMX_DMA_SG_LOOP BIT(0) @@ -498,6 +499,7 @@ struct sdma_engine { struct sdma_buffer_descriptor *bd0; /* clock ratio for AHB:SDMA core. 1:1 is 1, 2:1 is 0*/ bool clk_ratio; + bool fw_loaded; }; static int sdma_config_write(struct dma_chan *chan, @@ -953,6 +955,7 @@ static void sdma_get_pc(struct sdma_channel *sdmac, case IMX_DMATYPE_SSI_DUAL: per_2_emi = sdma->script_addrs->ssish_2_mcu_addr; emi_2_per = sdma->script_addrs->mcu_2_ssish_addr; + sdmac->is_ram_script = true; break; case IMX_DMATYPE_SSI_SP: case IMX_DMATYPE_MMC: @@ -967,6 +970,7 @@ static void sdma_get_pc(struct sdma_channel *sdmac, per_2_emi = sdma->script_addrs->asrc_2_mcu_addr; emi_2_per = sdma->script_addrs->asrc_2_mcu_addr; per_2_per = sdma->script_addrs->per_2_per_addr; + sdmac->is_ram_script = true; break; case IMX_DMATYPE_ASRC_SP: per_2_emi = sdma->script_addrs->shp_2_mcu_addr; @@ -1363,6 +1367,11 @@ static struct sdma_desc *sdma_transfer_init(struct sdma_channel *sdmac, { struct sdma_desc *desc; + if (!sdmac->sdma->fw_loaded && sdmac->is_ram_script) { + dev_warn_once(sdmac->sdma->dev, "sdma firmware not ready!\n"); + goto err_out; + } + desc = kzalloc((sizeof(*desc)), GFP_NOWAIT); if (!desc) goto err_out; @@ -1613,6 +1622,8 @@ static int sdma_config_write(struct dma_chan *chan, { struct sdma_channel *sdmac = to_sdma_chan(chan); + sdmac->is_ram_script = false; + if (direction == DMA_DEV_TO_MEM) { sdmac->per_address = dmaengine_cfg->src_addr; sdmac->watermark_level = dmaengine_cfg->src_maxburst * @@ -1792,6 +1803,8 @@ static void sdma_load_firmware(const struct firmware *fw, void *context) sdma_add_scripts(sdma, addr); + sdma->fw_loaded = true; + dev_info(sdma->dev, "loaded firmware %d.%d\n", header->version_major, header->version_minor);