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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 1/6] dt-bindings: remoteproc: Add PRU consumer bindings Date: Wed, 16 Nov 2022 17:46:29 +0530 Message-ID: <20221116121634.2901265-2-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749655295729530210?= X-GMAIL-MSGID: =?utf-8?q?1749655295729530210?= From: Suman Anna Add DT schema binding for PRU consumers. The binding includes all the common properties that can be used by different PRU consumer or application nodes and supported by the PRU remoteproc driver. These are used to configure the PRU hardware for specific user applications. The application nodes themselves should define their own bindings. Co-developed-by: Tero Kristo Co-developed-by: Suman Anna Co-developed-by: Grzegorz Jaszczyk Co-developed-by: Puranjay Mohan Signed-off-by: MD Danish Anwar Signed-off-by: Tero Kristo Signed-off-by: Suman Anna Signed-off-by: Grzegorz Jaszczyk --- .../bindings/remoteproc/ti,pru-consumer.yaml | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml b/Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml new file mode 100644 index 000000000000..c6d86964b72a --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/ti,pru-consumer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Common TI PRU Consumer Binding + +maintainers: + - Suman Anna + +description: | + A PRU application/consumer/user node typically uses one or more PRU device + nodes to implement a PRU application/functionality. Each application/client + node would need a reference to at least a PRU node, and optionally define + some properties needed for hardware/firmware configuration. The below + properties are a list of common properties supported by the PRU remoteproc + infrastructure. + + The application nodes shall define their own bindings like regular platform + devices, so below are in addition to each node's bindings. + +properties: + ti,prus: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: phandles to the PRU, RTU or Tx_PRU nodes used + minItems: 1 + maxItems: 6 + items: + maxItems: 1 + + firmware-name: + $ref: /schemas/types.yaml#/definitions/string-array + minItems: 1 + maxItems: 6 + description: | + firmwares for the PRU cores, the default firmware for the core from + the PRU node will be used if not provided. The firmware names should + correspond to the PRU cores listed in the 'ti,prus' property + + ti,pruss-gp-mux-sel: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 1 + maxItems: 6 + items: + enum: [0, 1, 2, 3, 4] + description: | + array of values for the GP_MUX_SEL under PRUSS_GPCFG register for a PRU. + This selects the internal muxing scheme for the PRU instance. Values + should correspond to the PRU cores listed in the 'ti,prus' property. The + GP_MUX_SEL setting is a per-slice setting (one setting for PRU0, RTU0, + and Tx_PRU0 on K3 SoCs). Use the same value for all cores within the + same slice in the associative array. If the array size is smaller than + the size of 'ti,prus' property, the default out-of-reset value (0) for the + PRU core is used. + +required: + - ti,prus + +additionalProperties: true From patchwork Wed Nov 16 12:16:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 21015 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp108744wru; Wed, 16 Nov 2022 04:22:34 -0800 (PST) X-Google-Smtp-Source: AA0mqf5CxuiX0RemJFW7lOUEyYoo7Pr5KCvQITpR23Rko03nHMclM5+GLYVunftNNY7aw1+g9AFq X-Received: by 2002:a17:906:1147:b0:78d:314e:b0fa with SMTP id i7-20020a170906114700b0078d314eb0famr16449499eja.370.1668601354375; Wed, 16 Nov 2022 04:22:34 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1668601354; cv=none; d=google.com; s=arc-20160816; b=ZYTiQhQA0Ws6re3wugVqTKBFQlZEvxa6qPVtKRjSL0M9htQN9Er8GRhosbBZDzzwXR I8T+P/ikyyDJl0/WBCfK6F58wN98vsPTrixTNaaUBh5jBnyHdZihXbBkjDN5y7fBd3f5 +90rVrbfnmysP+TCaF6bSutWA5UQHRx/J3MJb0bTqSeAO1AaumI9piwQStK1RoHd1pko Rabp6/XoeHVvQQpJ70X5GR4cQ06O+1qtOU1fbtCCTv3S8+sN51Q+h+xkMXl6wyMopLhS Abit4xZRoqZcRu3MTS9yVKDYjUkLRFAfgPq0oZpiLgqxiNdZ9U6oAUthv6sDStLM6TLh 5D8w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=mebHWwZYkmyuLbj/Sp2mDWgZ+8//vh+/L7+nnLUhfC8=; b=sq2n/REOgGaXRnEQMybO9C9o0h+0WpPfncOLkeD45fb4byWGG0TkjWZnFZOwfA1saQ P+c6F0K86yciDTL+QrRE2dNFl/0Cx1a+MIbXKWYPJGMI7XkDvpiGhD0iK6UbgJoVkuXJ O0N50pG8beQGimeroIexb40rEpklSB6Wcqv2bGxSfJWkEKhIq5A984+K45D1+wOLw8X7 /3YTm5pxO8OcaHH4jkx5HhTNXq4vcrJOnhWXKKRIFNqFtwjyWMwXkPHT4mDV8VlUJ00h 7AI9kwaWSfj66KNjp5gC9xAD1wRDfwkGvJ64JTFuvpIZKKJ7HHtNgzcjAJ4NVgwhjCn/ AF0Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=yPIp2Ugn; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: from out1.vger.email (out1.vger.email. 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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 2/6] remoteproc: pru: Add APIs to get and put the PRU cores Date: Wed, 16 Nov 2022 17:46:30 +0530 Message-ID: <20221116121634.2901265-3-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749655333821124598?= X-GMAIL-MSGID: =?utf-8?q?1749655333821124598?= From: Tero Kristo Add two new APIs, pru_rproc_get() and pru_rproc_put(), to the PRU driver to allow client drivers to acquire and release the remoteproc device associated with a PRU core. The PRU cores are treated as resources with only one client owning it at a time. The pru_rproc_get() function returns the rproc handle corresponding to a PRU core identified by the device tree "ti,prus" property under the client node. The pru_rproc_put() is the complementary function to pru_rproc_get(). Co-developed-by: Suman Anna Co-developed-by: Tero Kristo Co-developed-by: Grzegorz Jaszczyk Co-developed-by: Puranjay Mohan Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 134 ++++++++++++++++++++++++++++++++- include/linux/pruss.h | 47 ++++++++++++ 2 files changed, 179 insertions(+), 2 deletions(-) create mode 100644 include/linux/pruss.h diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index 128bf9912f2c..4769ade9c316 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -2,12 +2,14 @@ /* * PRU-ICSS remoteproc driver for various TI SoCs * - * Copyright (C) 2014-2020 Texas Instruments Incorporated - https://www.ti.com/ + * Copyright (C) 2014-2022 Texas Instruments Incorporated - https://www.ti.com/ * * Author(s): * Suman Anna * Andrew F. Davis * Grzegorz Jaszczyk for Texas Instruments + * Puranjay Mohan + * Md Danish Anwar */ #include @@ -16,6 +18,7 @@ #include #include #include +#include #include #include @@ -111,6 +114,8 @@ struct pru_private_data { * @rproc: remoteproc pointer for this PRU core * @data: PRU core specific data * @mem_regions: data for each of the PRU memory regions + * @client_np: client device node + * @lock: mutex to protect client usage * @fw_name: name of firmware image used during loading * @mapped_irq: virtual interrupt numbers of created fw specific mapping * @pru_interrupt_map: pointer to interrupt mapping description (firmware) @@ -126,6 +131,8 @@ struct pru_rproc { struct rproc *rproc; const struct pru_private_data *data; struct pruss_mem_region mem_regions[PRU_IOMEM_MAX]; + struct device_node *client_np; + struct mutex lock; const char *fw_name; unsigned int *mapped_irq; struct pru_irq_rsc *pru_interrupt_map; @@ -146,6 +153,125 @@ void pru_control_write_reg(struct pru_rproc *pru, unsigned int reg, u32 val) writel_relaxed(val, pru->mem_regions[PRU_IOMEM_CTRL].va + reg); } +static struct rproc *__pru_rproc_get(struct device_node *np, int index) +{ + struct rproc *rproc; + phandle rproc_phandle; + int ret; + + ret = of_property_read_u32_index(np, "ti,prus", index, &rproc_phandle); + if (ret) + return ERR_PTR(ret); + + rproc = rproc_get_by_phandle(rproc_phandle); + if (!rproc) { + ret = -EPROBE_DEFER; + goto err_no_rproc_handle; + } + + /* make sure it is PRU rproc */ + if (!is_pru_rproc(rproc->dev.parent)) { + rproc_put(rproc); + return ERR_PTR(-ENODEV); + } + + return rproc; + +err_no_rproc_handle: + rproc_put(rproc); + return ERR_PTR(ret); +} + +/** + * pru_rproc_get() - get the PRU rproc instance from a device node + * @np: the user/client device node + * @index: index to use for the ti,prus property + * @pru_id: optional pointer to return the PRU remoteproc processor id + * + * This function looks through a client device node's "ti,prus" property at + * index @index and returns the rproc handle for a valid PRU remote processor if + * found. The function allows only one user to own the PRU rproc resource at a + * time. Caller must call pru_rproc_put() when done with using the rproc, not + * required if the function returns a failure. + * + * When optional @pru_id pointer is passed the PRU remoteproc processor id is + * returned. + * + * Return: rproc handle on success, and an ERR_PTR on failure using one + * of the following error values + * -ENODEV if device is not found + * -EBUSY if PRU is already acquired by anyone + * -EPROBE_DEFER is PRU device is not probed yet + */ +struct rproc *pru_rproc_get(struct device_node *np, int index, + enum pruss_pru_id *pru_id) +{ + struct rproc *rproc; + struct pru_rproc *pru; + struct device *dev; + int ret; + + rproc = __pru_rproc_get(np, index); + if (IS_ERR(rproc)) + return rproc; + + pru = rproc->priv; + dev = &rproc->dev; + + mutex_lock(&pru->lock); + + if (pru->client_np) { + mutex_unlock(&pru->lock); + put_device(dev); + ret = -EBUSY; + goto err_no_rproc_handle; + } + + pru->client_np = np; + + mutex_unlock(&pru->lock); + + if (pru_id) + *pru_id = pru->id; + + return rproc; + +err_no_rproc_handle: + rproc_put(rproc); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(pru_rproc_get); + +/** + * pru_rproc_put() - release the PRU rproc resource + * @rproc: the rproc resource to release + * + * Releases the PRU rproc resource and makes it available to other + * users. + */ +void pru_rproc_put(struct rproc *rproc) +{ + struct pru_rproc *pru; + + if (IS_ERR_OR_NULL(rproc) || !is_pru_rproc(rproc->dev.parent)) + return; + + pru = rproc->priv; + + mutex_lock(&pru->lock); + + if (!pru->client_np) { + mutex_unlock(&pru->lock); + return; + } + + pru->client_np = NULL; + mutex_unlock(&pru->lock); + + rproc_put(rproc); +} +EXPORT_SYMBOL_GPL(pru_rproc_put); + static inline u32 pru_debug_read_reg(struct pru_rproc *pru, unsigned int reg) { return readl_relaxed(pru->mem_regions[PRU_IOMEM_DEBUG].va + reg); @@ -816,6 +942,8 @@ static int pru_rproc_probe(struct platform_device *pdev) pru->pruss = platform_get_drvdata(ppdev); pru->rproc = rproc; pru->fw_name = fw_name; + pru->client_np = NULL; + mutex_init(&pru->lock); for (i = 0; i < ARRAY_SIZE(mem_names); i++) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -904,7 +1032,7 @@ MODULE_DEVICE_TABLE(of, pru_rproc_match); static struct platform_driver pru_rproc_driver = { .driver = { - .name = "pru-rproc", + .name = PRU_RPROC_DRVNAME, .of_match_table = pru_rproc_match, .suppress_bind_attrs = true, }, @@ -916,5 +1044,7 @@ module_platform_driver(pru_rproc_driver); MODULE_AUTHOR("Suman Anna "); MODULE_AUTHOR("Andrew F. Davis "); MODULE_AUTHOR("Grzegorz Jaszczyk "); +MODULE_AUTHOR("Puranjay Mohan "); +MODULE_AUTHOR("Md Danish Anwar "); MODULE_DESCRIPTION("PRU-ICSS Remote Processor Driver"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/pruss.h b/include/linux/pruss.h new file mode 100644 index 000000000000..4909226f14a9 --- /dev/null +++ b/include/linux/pruss.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/** + * PRU-ICSS Subsystem user interfaces + * + * Copyright (C) 2015-2022 Texas Instruments Incorporated - http://www.ti.com + * Suman Anna + */ + +#ifndef __LINUX_PRUSS_H +#define __LINUX_PRUSS_H + +#include +#include + +#define PRU_RPROC_DRVNAME "pru-rproc" + +struct device_node; + +#if IS_ENABLED(CONFIG_PRU_REMOTEPROC) + +struct rproc *pru_rproc_get(struct device_node *np, int index, + enum pruss_pru_id *pru_id); +void pru_rproc_put(struct rproc *rproc); + +#else + +static inline struct rproc * +pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static inline void pru_rproc_put(struct rproc *rproc) { } + +#endif /* CONFIG_PRU_REMOTEPROC */ + +static inline bool is_pru_rproc(struct device *dev) +{ + const char *drv_name = dev_driver_string(dev); + + if (strncmp(drv_name, PRU_RPROC_DRVNAME, sizeof(PRU_RPROC_DRVNAME))) + return false; + + return true; +} + +#endif /* __LINUX_PRUSS_H */ From patchwork Wed Nov 16 12:16:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 21012 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp108610wru; Wed, 16 Nov 2022 04:22:13 -0800 (PST) X-Google-Smtp-Source: AA0mqf73CrsYPlGuBf6yrxm4A2SE3FiGTZieSZPys518PgSP9L9jRk6atE0XYLX5Qt9C7G/isd4D X-Received: by 2002:a05:6402:370a:b0:467:9384:a7be with SMTP id ek10-20020a056402370a00b004679384a7bemr15489647edb.141.1668601333384; Wed, 16 Nov 2022 04:22:13 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1668601333; cv=none; d=google.com; s=arc-20160816; b=UHJ1HbiX1JpXoWqwNXSGkdWrdSRw38KkVm0dqf8M1vYQJsLuNeRGZMjR+mNLk5DXYN 9Sqb/jLcS2xgre+mhS6iOcFgmbZI1qGf71Jqm2Jv75nk/CsfGSfz/hMcC8G/i1BQylZy TX3sG4at/JMXPTV8fK9NfpKdNJAseTx0BkFVNlmdSQT5Ff/ikAF6LQTEjvnmvxMcjIK7 Hk/xoIITRhJ8gNv81zxJnd9xAY5AkiR3Op1E9Bl5cYm72+ZznpLb1ddY6fNpGOcnry3G KHLWvIFLjBS3kYPQIYX0yGx0zPtGafjbkXWsCAq/iZCKzhf1f8K+ffI1N0K5DGzRNjqc nuyQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=PQTThAj8zPs2mcU3AIS2tvhUu1yshE7axp8XheUsR54=; b=AW0xvahlvpCxKZd6UDUhGwZ+6SBjRAiPgGVj/xCdZlTyRJswY1g3NCy0i9iXG1gRks Z7FxpVB1FsJ8xz5xrfoGsTdxFCm1ZumVeItW37LeYR/AizoebXD0SZ04rZm1q7hs6Gop W/YdehAWd+2PZpXj+I1IgC9OI90MH0mSWasv/xb+wZOq0AQWKhzl6ZFNd0/vMAqyTV9Y 1zdb2ZutFL/Z6JlBtutWdNyAdWHUsvXp68YXZcYjmaiNPDF71ml+ntNBFSwL6RkMviXL yLTw0zP27yKR8Tp4OA/8g+gHQGVS80bUz1sMpkhASUka2tcYBREZuKA2c/a2OK89crAE i+pA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=Xj7VN4Fn; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: from out1.vger.email (out1.vger.email. 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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 3/6] remoteproc: pru: Add enum for PRU Core Indentifiers. Date: Wed, 16 Nov 2022 17:46:31 +0530 Message-ID: <20221116121634.2901265-4-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749655311635596773?= X-GMAIL-MSGID: =?utf-8?q?1749655311635596773?= Introducing enum pruss_pru_id for PRU Core Identifiers. PRUSS_PRU0 indicates PRU Core 0. PRUSS_PRU1 indicates PRU Core 1. PRUSS_NUM_PRUS indicates the total number of PRU Cores. Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 6 +++--- include/linux/pruss.h | 9 +++++++++ 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index 4769ade9c316..7d4ed39b3772 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -564,7 +564,7 @@ static void *pru_d_da_to_va(struct pru_rproc *pru, u32 da, size_t len) dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; /* PRU1 has its local RAM addresses reversed */ - if (pru->id == 1) + if (pru->id == PRUSS_PRU1) swap(dram0, dram1); shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; @@ -873,14 +873,14 @@ static int pru_rproc_set_id(struct pru_rproc *pru) case RTU0_IRAM_ADDR_MASK: fallthrough; case PRU0_IRAM_ADDR_MASK: - pru->id = 0; + pru->id = PRUSS_PRU0; break; case TX_PRU1_IRAM_ADDR_MASK: fallthrough; case RTU1_IRAM_ADDR_MASK: fallthrough; case PRU1_IRAM_ADDR_MASK: - pru->id = 1; + pru->id = PRUSS_PRU1; break; default: ret = -EINVAL; diff --git a/include/linux/pruss.h b/include/linux/pruss.h index 4909226f14a9..fdc719b43db0 100644 --- a/include/linux/pruss.h +++ b/include/linux/pruss.h @@ -14,6 +14,15 @@ #define PRU_RPROC_DRVNAME "pru-rproc" +/* + * enum pruss_pru_id - PRU core identifiers + */ +enum pruss_pru_id { + PRUSS_PRU0 = 0, + PRUSS_PRU1, + PRUSS_NUM_PRUS, +}; + struct device_node; #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) From patchwork Wed Nov 16 12:16:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 21014 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp108683wru; Wed, 16 Nov 2022 04:22:24 -0800 (PST) X-Google-Smtp-Source: AA0mqf4U0k5vzFHmBhqRq3u46GW7yBJeHY3eWusnWu8GwuGPwoQNijnKGM/otJDVpNUPpBfNl8Yx X-Received: by 2002:a17:906:5a0c:b0:7ad:86f9:14c7 with SMTP id mx12-20020a1709065a0c00b007ad86f914c7mr16936294ejc.300.1668601343795; Wed, 16 Nov 2022 04:22:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1668601343; cv=none; d=google.com; s=arc-20160816; b=H/XcA2yJviAz+dr9s05zFgaF08peIG9JqQEiVJd9RNlSef0O9ny+Slo1dCiJpUU1We nHFhCAFI4vNzCxqf3nZ6t40bWbNS47wV56SH1atnWgN1tDnSp0SLDIe7TW6zBZx48jNY 65wabmjxvxzm8P9JjxqlHrWZ+LwqnWPUoR2dFvgJgGyLmsysmHqSqm3OClbXZa7t0QGU OJwZmiGt52LrPQT4dNqJIiePl2jrbwoAgejx0HixTBYuTi0eACD0LjGQXNMIdnl0Mx4M JSX7o5eY7dxr5CYjhjBqSpF727Z3tDB45FSj16mg+IUmcAHdVUI5nXg66vDBYwLl/oUO 6hAQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=cLDcxht+GZb1N7QGNbVmOg3psxKJsN5LhlYIFPJxwHM=; b=yihyguW1gq4xH2BXakE8vKkWPfGKGtmc5HBvNpP/B1ogBt3WVzlKN6HKtrlDcIwJeh IbkeGxnaH0+vxLwrOk8hJO74PUWL40CjF85JhZOAm0RsF24rm6yUNXU7wpuRJHHK/P2D Xfb8g8P4+x9L9egZeKqiQtDUQdkmGzJF6NBFnR2tIhEyP3xh5aolsBVSchhC48p+FLXG bol2Df80l8GsIYbt76sr8pZ7p6EhK66fIgih8VeOGldNLr45nsnjQU9l+/CbFtr7c7NV BvcEnjhOKa+sMu74f0ruUrTdI1ynSvvV4VyblnyX4TTjh7Y0vnPBaZgAw0Oc/r45vw+1 6uCQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=SiKg5Erf; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: from out1.vger.email (out1.vger.email. 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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 4/6] remoteproc: pru: Make sysfs entries read-only for PRU client driven boots Date: Wed, 16 Nov 2022 17:46:32 +0530 Message-ID: <20221116121634.2901265-5-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749655322754429974?= X-GMAIL-MSGID: =?utf-8?q?1749655322754429974?= From: Suman Anna The PRU remoteproc driver is not configured for 'auto-boot' by default, and allows to be booted either by in-kernel PRU client drivers or by userspace using the generic remoteproc sysfs interfaces. The sysfs interfaces should not be permitted to change the remoteproc firmwares or states when a PRU is being managed by an in-kernel client driver. Use the newly introduced remoteproc generic 'sysfs_read_only' flag to provide these restrictions by setting and clearing it appropriately during the PRU acquire and release steps. Co-developed-by: Suman Anna Co-developed-by: Grzegorz Jaszczyk Co-developed-by: Puranjay Mohan Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index 7d4ed39b3772..bca7550d79d2 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -228,6 +228,7 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, } pru->client_np = np; + rproc->sysfs_read_only = true; mutex_unlock(&pru->lock); @@ -266,6 +267,7 @@ void pru_rproc_put(struct rproc *rproc) } pru->client_np = NULL; + rproc->sysfs_read_only = false; mutex_unlock(&pru->lock); rproc_put(rproc); From patchwork Wed Nov 16 12:16:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 21016 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp108746wru; Wed, 16 Nov 2022 04:22:34 -0800 (PST) X-Google-Smtp-Source: AA0mqf6x5MMc/6Qyd52nKjHr6kX7FdE4g+cgCViVZMKhwyb3PnZ9KcrQrt87RB7fm4Ssx8oKbPsZ X-Received: by 2002:a17:906:6d52:b0:7ad:9673:8b73 with SMTP id a18-20020a1709066d5200b007ad96738b73mr18234114ejt.14.1668601354707; Wed, 16 Nov 2022 04:22:34 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1668601354; cv=none; d=google.com; s=arc-20160816; b=qdoXfFRmCxaK8axelSliNlCpH9/tppR3iVGjqaMtF2DMXNPowgjJOdFbbgDKdrZpJ9 rsoWcH11NpTXc/ql8+jkJ5oa4c2Vrbhyg0Pc1dyfb8nis8NCCdplqEPNP319veowm0f2 62gijDaSajBasFOJxW4MNV3TywK2ehRDqJUvIW1sLYbmKF2l5/foc++WRLyy8XXjcDu8 lyzB5gnovNTzf8ETYCIDQDdXMbU9B7xwsbmWKbK+b6oojePk9/u868jGgNNR2KOztQiz RLvb+d/vvNaY5Xump5q+Mnhpb4HGX8D1phv/Ck+kbi98H91cVVTiN4Qd3JykYr8KzrSO jYfA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=dai7WJHYXy6I6mhfgaqAw81A6YeCsKdcRfJMbFO/5gk=; b=WPZtrK9m5TYBn2NMaAdTU52hitZeeq8PBCJyeANbc2+slBwmb5blNFvHANAzb6PbLC DZGVZXpiJ9bkkw4yIb64e49cD+DkJbEGSiOS2EQDjfwY/dyPhiKt/zAAroO62bEImYHA nPKi092Y+/Ucy95NIoR6USeSEzQx2guaW357VpqHN5rf6/fT0VB7IrtQnXdQV9f1UVSi OkAAX7RI8EA7Q6eMPAkouh0Qn/6L+f9nn5tc5cCGF5KcN/md8dtTRm35Dwwi6SnDK7bd Rg6SstOJEeinWEAkIDZuAmTVrDOxqEPivgrU8Xdbhowdq1u8OjxgtXvf+sFbWhwG/vl2 N6Gw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=xIcEgxUc; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: from out1.vger.email (out1.vger.email. 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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 5/6] remoteproc: pru: Add pru_rproc_set_ctable() function Date: Wed, 16 Nov 2022 17:46:33 +0530 Message-ID: <20221116121634.2901265-6-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749655333778379621?= X-GMAIL-MSGID: =?utf-8?q?1749655333778379621?= From: Roger Quadros Some firmwares expect the OS drivers to configure the CTABLE entries publishing dynamically allocated memory regions. For example, the PRU Ethernet firmwares use the C28 and C30 entries for retrieving the Shared RAM and System SRAM (OCMC) areas allocated by the PRU Ethernet client driver. Provide a way for users to do that through a new API, pru_rproc_set_ctable(). The API returns 0 on success and a negative value on error. NOTE: The programmable CTABLE entries are typically re-programmed by the PRU firmwares when dealing with a certain block of memory during block processing. This API provides an interface to the PRU client drivers to publish a dynamically allocated memory block with the PRU firmware using a CTABLE entry instead of a negotiated address in shared memory. Additional synchronization may be needed between the PRU client drivers and firmwares if different addresses needs to be published at run-time reusing the same CTABLE entry. CTABLE for stands for "constant table". Each CTable entry just holds the upper address bits so PRU can reference to external memory with larger address bits. For use case please see prueth_sw_emac_config() in "drivers/net/ethernet/ti/prueth_switch.c" /* Set in constant table C28 of PRUn to ICSS Shared memory */ pru_rproc_set_ctable(prueth->pru0, PRU_C28, sharedramaddr); pru_rproc_set_ctable(prueth->pru1, PRU_C28, sharedramaddr); /* Set in constant table C30 of PRUn to OCMC memory */ pru_rproc_set_ctable(prueth->pru0, PRU_C30, ocmcaddr); pru_rproc_set_ctable(prueth->pru1, PRU_C30, ocmcaddr); Co-developed-by: Andrew F. Davis Co-developed-by: Suman Anna Co-developed-by: Roger Quadros Co-developed-by: Grzegorz Jaszczyk Co-developed-by: Puranjay Mohan Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 59 ++++++++++++++++++++++++++++++++++ include/linux/pruss.h | 22 +++++++++++++ 2 files changed, 81 insertions(+) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index bca7550d79d2..a7307a4c9308 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -120,6 +120,7 @@ struct pru_private_data { * @mapped_irq: virtual interrupt numbers of created fw specific mapping * @pru_interrupt_map: pointer to interrupt mapping description (firmware) * @pru_interrupt_map_sz: pru_interrupt_map size + * @rmw_lock: lock for read, modify, write operations on registers * @dbg_single_step: debug state variable to set PRU into single step mode * @dbg_continuous: debug state variable to restore PRU execution mode * @evt_count: number of mapped events @@ -137,6 +138,7 @@ struct pru_rproc { unsigned int *mapped_irq; struct pru_irq_rsc *pru_interrupt_map; size_t pru_interrupt_map_sz; + spinlock_t rmw_lock; /* register access lock */ u32 dbg_single_step; u32 dbg_continuous; u8 evt_count; @@ -153,6 +155,23 @@ void pru_control_write_reg(struct pru_rproc *pru, unsigned int reg, u32 val) writel_relaxed(val, pru->mem_regions[PRU_IOMEM_CTRL].va + reg); } +static inline +void pru_control_set_reg(struct pru_rproc *pru, unsigned int reg, + u32 mask, u32 set) +{ + u32 val; + unsigned long flags; + + spin_lock_irqsave(&pru->rmw_lock, flags); + + val = pru_control_read_reg(pru, reg); + val &= ~mask; + val |= (set & mask); + pru_control_write_reg(pru, reg, val); + + spin_unlock_irqrestore(&pru->rmw_lock, flags); +} + static struct rproc *__pru_rproc_get(struct device_node *np, int index) { struct rproc *rproc; @@ -274,6 +293,45 @@ void pru_rproc_put(struct rproc *rproc) } EXPORT_SYMBOL_GPL(pru_rproc_put); +/** + * pru_rproc_set_ctable() - set the constant table index for the PRU + * @rproc: the rproc instance of the PRU + * @c: constant table index to set + * @addr: physical address to set it to + * + * Return: 0 on success, or errno in error case. + */ +int pru_rproc_set_ctable(struct rproc *rproc, enum pru_ctable_idx c, u32 addr) +{ + struct pru_rproc *pru = rproc->priv; + unsigned int reg; + u32 mask, set; + u16 idx; + u16 idx_mask; + + if (IS_ERR_OR_NULL(rproc)) + return -EINVAL; + + if (!rproc->dev.parent || !is_pru_rproc(rproc->dev.parent)) + return -ENODEV; + + /* pointer is 16 bit and index is 8-bit so mask out the rest */ + idx_mask = (c >= PRU_C28) ? 0xFFFF : 0xFF; + + /* ctable uses bit 8 and upwards only */ + idx = (addr >> 8) & idx_mask; + + /* configurable ctable (i.e. C24) starts at PRU_CTRL_CTBIR0 */ + reg = PRU_CTRL_CTBIR0 + 4 * (c >> 1); + mask = idx_mask << (16 * (c & 1)); + set = idx << (16 * (c & 1)); + + pru_control_set_reg(pru, reg, mask, set); + + return 0; +} +EXPORT_SYMBOL_GPL(pru_rproc_set_ctable); + static inline u32 pru_debug_read_reg(struct pru_rproc *pru, unsigned int reg) { return readl_relaxed(pru->mem_regions[PRU_IOMEM_DEBUG].va + reg); @@ -945,6 +1003,7 @@ static int pru_rproc_probe(struct platform_device *pdev) pru->rproc = rproc; pru->fw_name = fw_name; pru->client_np = NULL; + spin_lock_init(&pru->rmw_lock); mutex_init(&pru->lock); for (i = 0; i < ARRAY_SIZE(mem_names); i++) { diff --git a/include/linux/pruss.h b/include/linux/pruss.h index fdc719b43db0..d830e20056c7 100644 --- a/include/linux/pruss.h +++ b/include/linux/pruss.h @@ -23,13 +23,29 @@ enum pruss_pru_id { PRUSS_NUM_PRUS, }; +/* + * enum pru_ctable_idx - Configurable Constant table index identifiers + */ +enum pru_ctable_idx { + PRU_C24 = 0, + PRU_C25, + PRU_C26, + PRU_C27, + PRU_C28, + PRU_C29, + PRU_C30, + PRU_C31, +}; + struct device_node; +struct rproc; #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) struct rproc *pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id); void pru_rproc_put(struct rproc *rproc); +int pru_rproc_set_ctable(struct rproc *rproc, enum pru_ctable_idx c, u32 addr); #else @@ -41,6 +57,12 @@ pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) static inline void pru_rproc_put(struct rproc *rproc) { } +static inline int pru_rproc_set_ctable(struct rproc *rproc, + enum pru_ctable_idx c, u32 addr) +{ + return -EOPNOTSUPP; +} + #endif /* CONFIG_PRU_REMOTEPROC */ static inline bool is_pru_rproc(struct device *dev) From patchwork Wed Nov 16 12:16:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 21013 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp108673wru; Wed, 16 Nov 2022 04:22:22 -0800 (PST) X-Google-Smtp-Source: AA0mqf691I0AhbA6pHwSG1S/slEbGwM30J2FjS397/K1pPSvtIutdBcFJ3Ygzud0VznZHXoalL1L X-Received: by 2002:a17:90a:3e47:b0:213:1a9f:8d72 with SMTP id t7-20020a17090a3e4700b002131a9f8d72mr3540708pjm.155.1668601341784; Wed, 16 Nov 2022 04:22:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1668601341; cv=none; d=google.com; s=arc-20160816; b=LzSwS4CQRsrJSCpe7udGOJfw/IvI8lpWR7zhHwBitMmP9WYR07ieKzWk0Md1kUBsrT Og0DkjLTWb9hKxgXVjcSeSr7COXJ/luoomkq3brNQMJxEnXsv7xmi6XE89NZTl0t03Gt CTyfPlqUHIF2dH0MiwTCS6GnZrwutWtMtrgkkdo5tr5G0SpGkrIu6NtpamGb0PMCgNN2 YNQcuvS5xhk+UB9Up1kIZMqXPO+U9dPYD6X7V882TQz0K8CjFkro/8MMhM35NssaWfTI /a1rZ2J/Th879x6zB44vSLkMLHZSuuepCxnuxwj9A8bne5zNJrT5mrpy2R5NueZmOWbx 8kCQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=eudYAVsx6hlGlvS/Bo/pkRAQpJefAK5REsiWIAcFSeE=; b=ecYrLEPT4lHCQxOOYZghM0idFqnqzzKrOvzp2lLIM7uj6RH5gBKa4dtdwrrvDeYejT q5ro32X3aNaQP77dAB8Q+oSawogWdDOOI7uo617wjPAzab96fskEQlM4XAJCaxVCbSrX BbLANY9Mv1cGWyT23NBjRgLcij2gmeGLm9gcQWyptJlAMO5Ax0vsYWzF375j2o4KKlJs l8t4GZb8oX9c1j0jJXf3uiz8MjHQR11gwtFlyxV5iTDPgp50aWwZeVW63DrjB6UD6ExH nYvu1NAojHqwZD41VJMCKgjtRj1XURQxp/RQPyRhktT7AP0KY3wI7pLw27UwYD6F35FR 5aFA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ti.com header.s=ti-com-17Q1 header.b=YEGVECVN; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=ti.com Received: from out1.vger.email (out1.vger.email. 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Davis" , , , , , , , , MD Danish Anwar Subject: [PATCH v8 6/6] remoteproc: pru: Configure firmware based on client setup Date: Wed, 16 Nov 2022 17:46:34 +0530 Message-ID: <20221116121634.2901265-7-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221116121634.2901265-1-danishanwar@ti.com> References: <20221116121634.2901265-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749655320377803669?= X-GMAIL-MSGID: =?utf-8?q?1749655320377803669?= From: Tero Kristo Client device node property firmware-name is now used to configure firmware for the PRU instances. The default firmware is also restored once releasing the PRU resource. Co-developed-by: Suman Anna Co-developed-by: Tero Kristo Co-developed-by: Grzegorz Jaszczyk Co-developed-by: Puranjay Mohan Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index a7307a4c9308..bbee17522aac 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -172,6 +172,23 @@ void pru_control_set_reg(struct pru_rproc *pru, unsigned int reg, spin_unlock_irqrestore(&pru->rmw_lock, flags); } +/** + * pru_rproc_set_firmware() - set firmware for a PRU core + * @rproc: the rproc instance of the PRU + * @fw_name: the new firmware name, or NULL if default is desired + * + * Return: 0 on success, or errno in error case. + */ +static int pru_rproc_set_firmware(struct rproc *rproc, const char *fw_name) +{ + struct pru_rproc *pru = rproc->priv; + + if (!fw_name) + fw_name = pru->fw_name; + + return rproc_set_firmware(rproc, fw_name); +} + static struct rproc *__pru_rproc_get(struct device_node *np, int index) { struct rproc *rproc; @@ -228,6 +245,7 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, struct rproc *rproc; struct pru_rproc *pru; struct device *dev; + const char *fw_name; int ret; rproc = __pru_rproc_get(np, index); @@ -254,11 +272,25 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, if (pru_id) *pru_id = pru->id; + ret = of_property_read_string_index(np, "firmware-name", index, + &fw_name); + if (!ret) { + ret = pru_rproc_set_firmware(rproc, fw_name); + if (ret) { + dev_err(dev, "failed to set firmware: %d\n", ret); + goto err; + } + } + return rproc; err_no_rproc_handle: rproc_put(rproc); return ERR_PTR(ret); + +err: + pru_rproc_put(rproc); + return ERR_PTR(ret); } EXPORT_SYMBOL_GPL(pru_rproc_get); @@ -278,6 +310,8 @@ void pru_rproc_put(struct rproc *rproc) pru = rproc->priv; + pru_rproc_set_firmware(rproc, NULL); + mutex_lock(&pru->lock); if (!pru->client_np) {