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Fri, 21 Oct 2022 04:14:11 +0000 From: "Peng Fan (OSS)" To: bjorn.andersson@kernel.org, mathieu.poirier@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan , Rob Herring Subject: [PATCH V8 2/7] dt-bindings: remoteproc: imx_rproc: support i.MX8QM Date: Fri, 21 Oct 2022 12:15:21 +0800 Message-Id: <20221021041526.3696483-3-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221021041526.3696483-1-peng.fan@oss.nxp.com> References: <20221021041526.3696483-1-peng.fan@oss.nxp.com> X-ClientProxiedBy: SI2PR06CA0018.apcprd06.prod.outlook.com (2603:1096:4:186::8) To DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR04MB9417:EE_|VE1PR04MB7294:EE_ X-MS-Office365-Filtering-Correlation-Id: 7146e2f9-eb3d-407a-40da-08dab31ab4d5 X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Fri, 21 Oct 2022 04:14:20 +0000 From: "Peng Fan (OSS)" To: bjorn.andersson@kernel.org, mathieu.poirier@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan Subject: [PATCH V8 4/7] remoteproc: imx_rproc: support kicking Mcore from Linux for i.MX8QXP Date: Fri, 21 Oct 2022 12:15:23 +0800 Message-Id: <20221021041526.3696483-5-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221021041526.3696483-1-peng.fan@oss.nxp.com> References: <20221021041526.3696483-1-peng.fan@oss.nxp.com> X-ClientProxiedBy: SI2PR06CA0018.apcprd06.prod.outlook.com (2603:1096:4:186::8) To DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR04MB9417:EE_|VE1PR04MB7294:EE_ X-MS-Office365-Filtering-Correlation-Id: ccdbc4dd-bdd1-4d32-dc2c-08dab31aba30 X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Added power domain to make sure M4 could run, it requires several power domains to work. Make clk always optional for i.MX8QXP, because SCFW handles it when power up M4 core. Reviewed-by: Mathieu Poirier Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 96 ++++++++++++++++++++++++++++++++-- 1 file changed, 93 insertions(+), 3 deletions(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 5bbba6955683..372cb4a346b0 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -79,6 +80,8 @@ struct imx_rproc_mem { #define ATT_OWN BIT(1) #define ATT_IOMEM BIT(2) +static int imx_rproc_detach_pd(struct rproc *rproc); + struct imx_rproc { struct device *dev; struct regmap *regmap; @@ -96,6 +99,10 @@ struct imx_rproc { struct notifier_block rproc_nb; u32 rproc_pt; /* partition id */ u32 rsrc_id; /* resource id */ + u32 entry; /* cpu start address */ + int num_pd; + struct device **pd_dev; + struct device_link **pd_dev_link; }; static const struct imx_rproc_att imx_rproc_att_imx93[] = { @@ -335,6 +342,9 @@ static int imx_rproc_start(struct rproc *rproc) arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_START, 0, 0, 0, 0, 0, 0, &res); ret = res.a0; break; + case IMX_RPROC_SCU_API: + ret = imx_sc_pm_cpu_start(priv->ipc_handle, priv->rsrc_id, true, priv->entry); + break; default: return -EOPNOTSUPP; } @@ -364,6 +374,9 @@ static int imx_rproc_stop(struct rproc *rproc) if (res.a1) dev_info(dev, "Not in wfi, force stopped\n"); break; + case IMX_RPROC_SCU_API: + ret = imx_sc_pm_cpu_start(priv->ipc_handle, priv->rsrc_id, false, priv->entry); + break; default: return -EOPNOTSUPP; } @@ -713,8 +726,10 @@ static void imx_rproc_put_scu(struct rproc *rproc) if (dcfg->method != IMX_RPROC_SCU_API) return; - if (imx_sc_rm_is_resource_owned(priv->ipc_handle, priv->rsrc_id)) + if (imx_sc_rm_is_resource_owned(priv->ipc_handle, priv->rsrc_id)) { + imx_rproc_detach_pd(rproc); return; + } imx_scu_irq_group_enable(IMX_SC_IRQ_GROUP_REBOOTED, BIT(priv->rproc_pt), false); imx_scu_irq_unregister_notifier(&priv->rproc_nb); @@ -736,6 +751,77 @@ static int imx_rproc_partition_notify(struct notifier_block *nb, return 0; } +static int imx_rproc_attach_pd(struct imx_rproc *priv) +{ + struct device *dev = priv->dev; + int ret, i; + + /* + * If there is only one power-domain entry, the platform driver framework + * will handle it, no need handle it in this driver. + */ + priv->num_pd = of_count_phandle_with_args(dev->of_node, "power-domains", + "#power-domain-cells"); + if (priv->num_pd <= 1) + return 0; + + priv->pd_dev = devm_kmalloc_array(dev, priv->num_pd, sizeof(*priv->pd_dev), GFP_KERNEL); + if (!priv->pd_dev) + return -ENOMEM; + + priv->pd_dev_link = devm_kmalloc_array(dev, priv->num_pd, sizeof(*priv->pd_dev_link), + GFP_KERNEL); + + if (!priv->pd_dev_link) + return -ENOMEM; + + for (i = 0; i < priv->num_pd; i++) { + priv->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i); + if (IS_ERR(priv->pd_dev[i])) { + ret = PTR_ERR(priv->pd_dev[i]); + goto detach_pd; + } + + priv->pd_dev_link[i] = device_link_add(dev, priv->pd_dev[i], DL_FLAG_STATELESS | + DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); + if (!priv->pd_dev_link[i]) { + dev_pm_domain_detach(priv->pd_dev[i], false); + ret = -EINVAL; + goto detach_pd; + } + } + + return 0; + +detach_pd: + while (--i >= 0) { + device_link_del(priv->pd_dev_link[i]); + dev_pm_domain_detach(priv->pd_dev[i], false); + } + + return ret; +} + +static int imx_rproc_detach_pd(struct rproc *rproc) +{ + struct imx_rproc *priv = rproc->priv; + int i; + + /* + * If there is only one power-domain entry, the platform driver framework + * will handle it, no need handle it in this driver. + */ + if (priv->num_pd <= 1) + return 0; + + for (i = 0; i < priv->num_pd; i++) { + device_link_del(priv->pd_dev_link[i]); + dev_pm_domain_detach(priv->pd_dev[i], false); + } + + return 0; +} + static int imx_rproc_detect_mode(struct imx_rproc *priv) { struct regmap_config config = { .name = "imx-rproc" }; @@ -770,8 +856,12 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) * If Mcore resource is not owned by Acore partition, It is kicked by ROM, * and Linux could only do IPC with Mcore and nothing else. */ - if (imx_sc_rm_is_resource_owned(priv->ipc_handle, priv->rsrc_id)) - return 0; + if (imx_sc_rm_is_resource_owned(priv->ipc_handle, priv->rsrc_id)) { + if (of_property_read_u32(dev->of_node, "fsl,entry-address", &priv->entry)) + return -EINVAL; + + return imx_rproc_attach_pd(priv); + } priv->rproc->state = RPROC_DETACHED; priv->rproc->recovery_disabled = true; From patchwork Fri Oct 21 04:15:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Peng Fan \(OSS\)" X-Patchwork-Id: 617330 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D321C4332F for ; Fri, 21 Oct 2022 04:15:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229992AbiJUEPu (ORCPT ); Fri, 21 Oct 2022 00:15:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229978AbiJUEPB (ORCPT ); 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Received: from DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) by VE1PR04MB7294.eurprd04.prod.outlook.com (2603:10a6:800:1a3::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5723.29; Fri, 21 Oct 2022 04:14:29 +0000 Received: from DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::a5ff:3d28:4bbc:e1ed]) by DU0PR04MB9417.eurprd04.prod.outlook.com ([fe80::a5ff:3d28:4bbc:e1ed%6]) with mapi id 15.20.5723.032; Fri, 21 Oct 2022 04:14:29 +0000 From: "Peng Fan (OSS)" To: bjorn.andersson@kernel.org, mathieu.poirier@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, shawnguo@kernel.org, s.hauer@pengutronix.de Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan Subject: [PATCH V8 6/7] remoteproc: imx_rproc: request mbox channel later Date: Fri, 21 Oct 2022 12:15:25 +0800 Message-Id: <20221021041526.3696483-7-peng.fan@oss.nxp.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221021041526.3696483-1-peng.fan@oss.nxp.com> References: <20221021041526.3696483-1-peng.fan@oss.nxp.com> X-ClientProxiedBy: SI2PR06CA0018.apcprd06.prod.outlook.com (2603:1096:4:186::8) To DU0PR04MB9417.eurprd04.prod.outlook.com (2603:10a6:10:358::11) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU0PR04MB9417:EE_|VE1PR04MB7294:EE_ X-MS-Office365-Filtering-Correlation-Id: 86b4a916-7c9a-451f-e051-08dab31abfad X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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So move the request/free to start/stop for managing remote procesosr in Linux, move to attach/detach for remote processor is out of control of Linux. Previous, we just request mbox when attach for CM4 boot early before Linux, but if mbox defer probe, remoteproc core will do resource cleanup and corrupt resource table for later probe. So move request mbox ealier and still keep mbox request when attach for self recovery case, but keep a check when request/free mbox. Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 48 ++++++++++++++++++++++++++++++++-- 1 file changed, 46 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 917e6db39572..dda4e8a12adf 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -84,6 +84,8 @@ struct imx_rproc_mem { #define ATT_CORE_MASK 0xffff #define ATT_CORE(I) BIT((I)) +static int imx_rproc_xtr_mbox_init(struct rproc *rproc); +static void imx_rproc_free_mbox(struct rproc *rproc); static int imx_rproc_detach_pd(struct rproc *rproc); struct imx_rproc { @@ -357,6 +359,10 @@ static int imx_rproc_start(struct rproc *rproc) struct arm_smccc_res res; int ret; + ret = imx_rproc_xtr_mbox_init(rproc); + if (ret) + return ret; + switch (dcfg->method) { case IMX_RPROC_MMIO: ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, @@ -407,6 +413,8 @@ static int imx_rproc_stop(struct rproc *rproc) if (ret) dev_err(dev, "Failed to stop remote core\n"); + else + imx_rproc_free_mbox(rproc); return ret; } @@ -592,6 +600,22 @@ static void imx_rproc_kick(struct rproc *rproc, int vqid) static int imx_rproc_attach(struct rproc *rproc) { + return imx_rproc_xtr_mbox_init(rproc); +} + +static int imx_rproc_detach(struct rproc *rproc) +{ + struct imx_rproc *priv = rproc->priv; + const struct imx_rproc_dcfg *dcfg = priv->dcfg; + + if (dcfg->method != IMX_RPROC_SCU_API) + return -EOPNOTSUPP; + + if (imx_sc_rm_is_resource_owned(priv->ipc_handle, priv->rsrc_id)) + return -EOPNOTSUPP; + + imx_rproc_free_mbox(rproc); + return 0; } @@ -610,6 +634,7 @@ static struct resource_table *imx_rproc_get_loaded_rsc_table(struct rproc *rproc static const struct rproc_ops imx_rproc_ops = { .prepare = imx_rproc_prepare, .attach = imx_rproc_attach, + .detach = imx_rproc_detach, .start = imx_rproc_start, .stop = imx_rproc_stop, .kick = imx_rproc_kick, @@ -720,6 +745,18 @@ static int imx_rproc_xtr_mbox_init(struct rproc *rproc) struct device *dev = priv->dev; struct mbox_client *cl; + /* + * stop() and detach() will free the mbox channels, so need + * to request mbox channels in start() and attach(). + * + * Because start() and attach() not able to handle mbox defer + * probe, imx_rproc_xtr_mbox_init is also called in probe(). + * The check is to avoid request mbox again when start() or + * attach() after probe() returns success. + */ + if (priv->tx_ch && priv->rx_ch) + return 0; + if (!of_get_property(dev->of_node, "mbox-names", NULL)) return 0; @@ -749,8 +786,15 @@ static void imx_rproc_free_mbox(struct rproc *rproc) { struct imx_rproc *priv = rproc->priv; - mbox_free_channel(priv->tx_ch); - mbox_free_channel(priv->rx_ch); + if (priv->tx_ch) { + mbox_free_channel(priv->tx_ch); + priv->tx_ch = NULL; + } + + if (priv->rx_ch) { + mbox_free_channel(priv->rx_ch); + priv->rx_ch = NULL; + } } static void imx_rproc_put_scu(struct rproc *rproc)