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Fri, 24 Jul 2020 07:44:12 +0000 From: Peng Fan To: bjorn.andersson@linaro.org, mathieu.poirier@linaro.org, o.rempel@pengutronix.de, robh+dt@kernel.org Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Peng Fan Subject: [PATCH 10/10] remoteproc: imx_rproc: support coproc booting before Linux Date: Fri, 24 Jul 2020 16:08:13 +0800 Message-Id: <20200724080813.24884-11-peng.fan@nxp.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200724080813.24884-1-peng.fan@nxp.com> References: <20200724080813.24884-1-peng.fan@nxp.com> Content-Type: text/plain X-ClientProxiedBy: SGAP274CA0014.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b6::26) To DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from linux-1xn6.ap.freescale.net (119.31.174.71) by SGAP274CA0014.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b6::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3216.23 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: +BXej0xxfuBoqWkqbDIdKogrwn+KqM33XmQoWEPqtwv689nhKMiy9a/GQx5fh7vsH/cLP3i/3TS2kJwnWFmAlr1wdgcTimXDPZNdM3GYT7vIWOSqNNFV1r41/1uxEgmKP6u9ysIzGwOW9eyHWGHFP2powwKL7giRwZmWW/xFkv7p41ZQlSDRRqyYR5NRGe4J0bRMZdm3REJafZKIJEzHsoa9OqDpcy8bnRhcZNRtwTXmlR6MeTjetws1nbhtA8f/qYIutTaJlfrrGpCoSO8Gj6EHJCsnvywT374toN5bfS23Zrg4nuXihPRyxUZ9zjMavDIyrvh616c/Tq7A5FA1MQnc6AoAdbC5nF01cnGBnUFgHxHsnPFNazCI4aSKxA0HHl+dyAeaBH4dhN6T96BHaF7sgUR5sFBkE4LDbli3USQ4MvDPzijiGL7RsZ33CmQxMRisK6PpKQtDRT12tzP4QhrIIrca9RMTWeckIPqKuDM= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2481b5ca-703a-413b-5505-08d82fa55b94 X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2020 07:44:12.8890 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: EQP6hoC7N6XHnB3Flgwp+ynlQ9oZb2a2pYsUfnyVV8i2WWsfBAwy+3/9JaZoyNpnUzfeD5edF6WgWFKChEutrg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR04MB6858 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Detect Coproc booted or not and Parse resource table Set remoteproc state to RPROC_DETACHED when M4 is booted early Add attach hook Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 75 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 73 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index a8ce97c04e1e..0863b3162777 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -91,6 +91,7 @@ struct imx_rproc { const struct imx_rproc_dcfg *dcfg; struct imx_rproc_mem mem[IMX7D_RPROC_MEM_MAX]; struct clk *clk; + bool early_boot; void *rsc_va; struct mbox_client cl; struct mbox_chan *tx_ch; @@ -235,6 +236,8 @@ static int imx_rproc_stop(struct rproc *rproc) dcfg->src_mask, dcfg->src_stop); if (ret) dev_err(dev, "Failed to stop M4!\n"); + else + priv->early_boot = false; return ret; } @@ -390,6 +393,32 @@ static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw) return 0; } +static int imx_rproc_get_loaded_rsc_table(struct device *dev, + struct rproc *rproc) +{ + struct imx_rproc *priv = rproc->priv; + struct device_node *np = dev->of_node; + u32 da; + int ret; + + ret = of_property_read_u32(np, "rsc-da", &da); + if (!ret) + priv->rsc_va = rproc_da_to_va(rproc, (u64)da, SZ_1K); + else + return 0; + + if (!priv->rsc_va) { + dev_err(priv->dev, "no map for rsc-da: %x\n", da); + return PTR_ERR(priv->rsc_va); + } + + rproc->table_ptr = (struct resource_table *)priv->rsc_va; + rproc->table_sz = SZ_1K; + rproc->cached_table = NULL; + + return 0; +} + static int imx_rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw) { struct device *dev = &rproc->dev; @@ -472,9 +501,15 @@ static void imx_rproc_kick(struct rproc *rproc, int vqid) __func__, vqid, err); } +static int imx_rproc_attach(struct rproc *rproc) +{ + return 0; +} + static const struct rproc_ops imx_rproc_ops = { .start = imx_rproc_start, .stop = imx_rproc_stop, + .attach = imx_rproc_attach, .kick = imx_rproc_kick, .da_to_va = imx_rproc_da_to_va, .load = imx_rproc_elf_load_segments, @@ -609,6 +644,36 @@ static int imx_rproc_xtr_mbox_init(struct rproc *rproc) return ret; } +static int imx_rproc_detect_mode(struct imx_rproc *priv) +{ + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + struct device *dev = priv->dev; + int ret; + u32 val; + + ret = regmap_read(priv->regmap, dcfg->src_reg, &val); + if (ret) { + dev_err(dev, "Failed to read src\n"); + return ret; + } + + priv->early_boot = !(val & dcfg->src_stop); + + if (priv->early_boot) { + priv->rproc->state = RPROC_DETACHED; + + ret = imx_rproc_parse_memory_regions(priv->rproc); + if (ret) + return ret; + + ret = imx_rproc_get_loaded_rsc_table(dev, priv->rproc); + if (ret) + return ret; + } + + return 0; +} + static int imx_rproc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -661,6 +726,10 @@ static int imx_rproc_probe(struct platform_device *pdev) goto err_put_mbox; } + ret = imx_rproc_detect_mode(priv); + if (ret) + goto err_put_mbox; + priv->clk = devm_clk_get_optional(dev, NULL); if (IS_ERR(priv->clk)) { dev_err(dev, "Failed to get clock\n"); @@ -689,7 +758,8 @@ static int imx_rproc_probe(struct platform_device *pdev) return 0; err_put_clk: - clk_disable_unprepare(priv->clk); + if (!priv->early_boot) + clk_disable_unprepare(priv->clk); err_put_mbox: if (!IS_ERR(priv->tx_ch)) mbox_free_channel(priv->tx_ch); @@ -706,7 +776,8 @@ static int imx_rproc_remove(struct platform_device *pdev) struct rproc *rproc = platform_get_drvdata(pdev); struct imx_rproc *priv = rproc->priv; - clk_disable_unprepare(priv->clk); + if (!priv->early_boot) + clk_disable_unprepare(priv->clk); rproc_del(rproc); rproc_free(rproc); -- 2.16.4