From patchwork Fri Jan 6 12:10:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13091317 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 04C84C3DA7A for ; Fri, 6 Jan 2023 12:12:06 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rk9NAKOIGQPM+kiKILuYepoivCZKk6QvKHjJHNDhL90=; b=ZlbnnV3DjwFPVV aL1fRQ4qMjT1H0IN5mdZ6eegIwlTtEUlB2XdWYGybMn4hJ+/Y/tbuAJioiSa63kDnS6MMNxiQYtd5 zM8qLrUnDdGEOH559m5+FQY8PVreVqyu1qfOZMY+80oQ51+09OcjKli+1dGx0v0hNUZ3gOVy2FHpC HeOBVBJKDTLjdPnA/tHYiw2xk3EgrB51Ze5ujmGPMOS1g74CG1mLucKYkOTKoqrQWgwCs6V8ngilc GXAPKPUUBIXva8fm6tzqBaQjNNYFYlivynmwXDYVUYVgegWjXkMz2W94w/F8/nmWd5rzI2mB0MEO6 NzUklnhzEUNqKao+sNyw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDlYu-007vgG-G0; Fri, 06 Jan 2023 12:11:04 +0000 Received: from lelv0142.ext.ti.com ([198.47.23.249]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDlYr-007vec-8G for linux-arm-kernel@lists.infradead.org; Fri, 06 Jan 2023 12:11:03 +0000 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 306CApFT055982; Fri, 6 Jan 2023 06:10:51 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1673007051; bh=mkPjwEGogI62uJtihkwiClxeDM8LlzG5SN3BLcVtk3o=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=GJ5xa1sxopzONzGhOMdF61bbT/DJrPJTP9OSV8ZS1z41Rjmu74O1EdqzAF1Nt9MK2 VO9SpATuB+5zVTPssQnciJDJzti6g629Yi8XmPYjM7WCOr6LpFI7Wni0SJ8RMS+Qof hPQpDeMNS/EERCCtVs6eGPCidxwWt/cZ9unCcSaw= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 306CApdZ029894 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 6 Jan 2023 06:10:51 -0600 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Fri, 6 Jan 2023 06:10:51 -0600 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Fri, 6 Jan 2023 06:10:51 -0600 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 306CAphT097005; Fri, 6 Jan 2023 06:10:51 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 306CAofj028591; Fri, 6 Jan 2023 06:10:50 -0600 From: MD Danish Anwar To: Mathieu Poirier , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v14 1/6] dt-bindings: remoteproc: Add PRU consumer bindings Date: Fri, 6 Jan 2023 17:40:41 +0530 Message-ID: <20230106121046.886863-2-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230106121046.886863-1-danishanwar@ti.com> References: <20230106121046.886863-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_041101_398949_549A1896 X-CRM114-Status: GOOD ( 17.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, srk@ti.com, vigneshr@ti.com, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, MD Danish Anwar , "Andrew F . Davis" , Roger Quadros , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Signed-off-by: Tero Kristo Signed-off-by: Suman Anna Signed-off-by: Grzegorz Jaszczyk Signed-off-by: MD Danish Anwar Reviewed-by: Rob Herring --- .../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 Fri Jan 6 12:10:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13091319 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 7EDADC4708D for ; Fri, 6 Jan 2023 12:12:14 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=HlcULT0KzLtPwPf6/IT8xCLHFWvXu9GuSz932gGgBeg=; b=YhNTeoRXQJYF/8 HdxBQM3goqfnGpSe3ZYB4yIN7Utq77SRu/YG2BQwcQCNLzuxvIQX0tNdSP56nPK2wn1jW4r3fvia9 LinCOZVpPnWyWCs8l27CYLCm8a2LDUM+HeTJxdSOQINfEWhH21Gg7p5G2CaR63ujk998DzvcT2IPh QCmo8yrvXs5di/BMFRB0oExearGMMSRFRA/oqBz0EmvzNebeIaf47B7Faf0VzECfZ0ZXh1d7bFvyA 43XSPwiKT3Fd5O9wxL6fXDQXWzcwE57orBrt5CuYihdYqeR9+Aap8ywy7wLHODU3CIIol+dquTaA9 i/FdPfA52wJrP+SPhBnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDlZA-007vm2-UP; Fri, 06 Jan 2023 12:11:21 +0000 Received: from lelv0142.ext.ti.com ([198.47.23.249]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pDlYt-007vfq-EK for linux-arm-kernel@lists.infradead.org; Fri, 06 Jan 2023 12:11:05 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 306CAs4D055988; Fri, 6 Jan 2023 06:10:54 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1673007054; bh=APuPg8hHxa0puGZvefj7zQU4abidna2fQgaEJGf+eO4=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=mru+4GppeL3bEsf2PeYWCM+jFicDeYFu1RB8fufoCEmziOYK0u6eoXQcVO1bdOLdV sRZxH/1+hxgll/cvW5fRQ7shnOPm45B7knGMwmrx79FFnolPJWcgsgEw6vjFkOjmTl 7xoPGVEFAvQlmRyLVstIJ0AoI94xJP5/8KwpJP28= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 306CAskN055576 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 6 Jan 2023 06:10:54 -0600 Received: from DLEE108.ent.ti.com (157.170.170.38) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Fri, 6 Jan 2023 06:10:53 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Fri, 6 Jan 2023 06:10:53 -0600 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 306CArVq020284; Fri, 6 Jan 2023 06:10:53 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 306CAq9J028598; Fri, 6 Jan 2023 06:10:53 -0600 From: MD Danish Anwar To: Mathieu Poirier , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v14 2/6] remoteproc: pru: Add enum for PRU Core Identifiers. Date: Fri, 6 Jan 2023 17:40:42 +0530 Message-ID: <20230106121046.886863-3-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230106121046.886863-1-danishanwar@ti.com> References: <20230106121046.886863-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_041103_578363_B4C5F884 X-CRM114-Status: GOOD ( 17.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, srk@ti.com, vigneshr@ti.com, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, MD Danish Anwar , "Andrew F . Davis" , Roger Quadros , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Reviewed-by: Roger Quadros --- drivers/remoteproc/pru_rproc.c | 7 ++++--- include/linux/remoteproc/pruss.h | 31 +++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+), 3 deletions(-) create mode 100644 include/linux/remoteproc/pruss.h diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index 128bf9912f2c..f8b196a2b72a 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -438,7 +439,7 @@ 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]; @@ -747,14 +748,14 @@ 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/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h new file mode 100644 index 000000000000..e94a81e97a4c --- /dev/null +++ b/include/linux/remoteproc/pruss.h @@ -0,0 +1,31 @@ +/* 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" + +/** + * enum pruss_pru_id - PRU core identifiers + * @PRUSS_PRU0: PRU Core 0. + * @PRUSS_PRU1: PRU Core 1. + * @PRUSS_NUM_PRUS: Total number of PRU Cores available. + * + */ + +enum pruss_pru_id { + PRUSS_PRU0 = 0, + PRUSS_PRU1, + PRUSS_NUM_PRUS, +}; + +#endif /* __LINUX_PRUSS_H */ From patchwork Fri Jan 6 12:10:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13091318 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 C40E0C4708D for ; Fri, 6 Jan 2023 12:12:07 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 6 Jan 2023 06:10:56 -0600 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 306CAuQA097052; Fri, 6 Jan 2023 06:10:56 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 306CAsxW028607; Fri, 6 Jan 2023 06:10:55 -0600 From: MD Danish Anwar To: Mathieu Poirier , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v14 3/6] remoteproc: pru: Add APIs to get and put the PRU cores Date: Fri, 6 Jan 2023 17:40:43 +0530 Message-ID: <20230106121046.886863-4-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230106121046.886863-1-danishanwar@ti.com> References: <20230106121046.886863-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_041101_252163_9B635DED X-CRM114-Status: GOOD ( 27.06 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, srk@ti.com, vigneshr@ti.com, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, MD Danish Anwar , "Andrew F . Davis" , Roger Quadros , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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(). Signed-off-by: Suman Anna Signed-off-by: Tero Kristo Signed-off-by: Grzegorz Jaszczyk Signed-off-by: MD Danish Anwar Reviewed-by: Roger Quadros --- drivers/remoteproc/pru_rproc.c | 128 ++++++++++++++++++++++++++++++- include/linux/remoteproc/pruss.h | 30 ++++++++ 2 files changed, 156 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index f8b196a2b72a..1036bfd446b6 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 @@ -112,6 +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) @@ -127,6 +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; @@ -147,6 +153,120 @@ 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; + return ERR_PTR(ret); + } + + /* make sure it is PRU rproc */ + if (!is_pru_rproc(rproc->dev.parent)) { + rproc_put(rproc); + return ERR_PTR(-ENODEV); + } + + return rproc; +} + +/** + * 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); + 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); @@ -817,6 +937,8 @@ 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, @@ -905,7 +1027,7 @@ 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, }, @@ -917,5 +1039,7 @@ 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/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h index e94a81e97a4c..efe89c586b4b 100644 --- a/include/linux/remoteproc/pruss.h +++ b/include/linux/remoteproc/pruss.h @@ -28,4 +28,34 @@ enum pruss_pru_id { PRUSS_NUM_PRUS, }; +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 Fri Jan 6 12:10:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13091321 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 42DB6C3DA7A for ; Fri, 6 Jan 2023 12:12:39 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 6 Jan 2023 06:10:58 -0600 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 306CAwGP097078; Fri, 6 Jan 2023 06:10:58 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 306CAvmj028616; Fri, 6 Jan 2023 06:10:58 -0600 From: MD Danish Anwar To: Mathieu Poirier , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v14 4/6] remoteproc: pru: Make sysfs entries read-only for PRU client driven boots Date: Fri, 6 Jan 2023 17:40:44 +0530 Message-ID: <20230106121046.886863-5-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230106121046.886863-1-danishanwar@ti.com> References: <20230106121046.886863-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_041110_047431_60904290 X-CRM114-Status: GOOD ( 12.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, srk@ti.com, vigneshr@ti.com, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, MD Danish Anwar , "Andrew F . Davis" , Roger Quadros , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Signed-off-by: Suman Anna Signed-off-by: Grzegorz Jaszczyk Signed-off-by: MD Danish Anwar Reviewed-by: Roger Quadros --- 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 1036bfd446b6..c16242e2d435 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -223,6 +223,7 @@ struct rproc *pru_rproc_get(struct device_node *np, int index, } pru->client_np = np; + rproc->sysfs_read_only = true; mutex_unlock(&pru->lock); @@ -261,6 +262,7 @@ 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 Fri Jan 6 12:10:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13091322 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 16D89C3DA7A for ; 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Fri, 6 Jan 2023 06:11:01 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Fri, 6 Jan 2023 06:11:01 -0600 Received: from fllv0122.itg.ti.com (fllv0122.itg.ti.com [10.247.120.72]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 306CB1sE122584; Fri, 6 Jan 2023 06:11:01 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 306CAxXQ028621; Fri, 6 Jan 2023 06:11:00 -0600 From: MD Danish Anwar To: Mathieu Poirier , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v14 5/6] remoteproc: pru: Add pru_rproc_set_ctable() function Date: Fri, 6 Jan 2023 17:40:45 +0530 Message-ID: <20230106121046.886863-6-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230106121046.886863-1-danishanwar@ti.com> References: <20230106121046.886863-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_041111_911952_24CD93BD X-CRM114-Status: GOOD ( 24.75 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, srk@ti.com, vigneshr@ti.com, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, MD Danish Anwar , "Andrew F . Davis" , Roger Quadros , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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); Signed-off-by: Andrew F. Davis Signed-off-by: Suman Anna Signed-off-by: Roger Quadros Signed-off-by: Grzegorz Jaszczyk Signed-off-by: MD Danish Anwar --- drivers/remoteproc/pru_rproc.c | 59 ++++++++++++++++++++++++++++++++ include/linux/remoteproc/pruss.h | 22 ++++++++++++ 2 files changed, 81 insertions(+) diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index c16242e2d435..f6ea445d2fa2 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; 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; @@ -269,6 +288,45 @@ 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); @@ -940,6 +998,7 @@ 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/remoteproc/pruss.h b/include/linux/remoteproc/pruss.h index efe89c586b4b..5c20da98a4b8 100644 --- a/include/linux/remoteproc/pruss.h +++ b/include/linux/remoteproc/pruss.h @@ -28,13 +28,29 @@ 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 @@ -46,6 +62,12 @@ 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 Fri Jan 6 12:10:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13091323 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 4E636C3DA7A for ; Fri, 6 Jan 2023 12:13:08 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 6 Jan 2023 06:11:03 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by fllv0122.itg.ti.com (8.14.7/8.14.7) with ESMTP id 306CB2Z2028627; Fri, 6 Jan 2023 06:11:02 -0600 From: MD Danish Anwar To: Mathieu Poirier , Krzysztof Kozlowski , Rob Herring Subject: [PATCH v14 6/6] remoteproc: pru: Configure firmware based on client setup Date: Fri, 6 Jan 2023 17:40:46 +0530 Message-ID: <20230106121046.886863-7-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230106121046.886863-1-danishanwar@ti.com> References: <20230106121046.886863-1-danishanwar@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230106_041113_906794_A52D9172 X-CRM114-Status: GOOD ( 14.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, srk@ti.com, vigneshr@ti.com, devicetree@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, MD Danish Anwar , "Andrew F . Davis" , Roger Quadros , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Signed-off-by: Suman Anna Signed-off-by: Tero Kristo Signed-off-by: Grzegorz Jaszczyk Signed-off-by: MD Danish Anwar Reviewed-by: Roger Quadros --- 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 f6ea445d2fa2..b76db7fa693d 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; @@ -224,6 +241,7 @@ 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); @@ -249,11 +267,25 @@ 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); @@ -273,6 +305,8 @@ void pru_rproc_put(struct rproc *rproc) pru = rproc->priv; + pru_rproc_set_firmware(rproc, NULL); + mutex_lock(&pru->lock); if (!pru->client_np) {