From patchwork Wed Apr 26 09:12:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tinghan Shen X-Patchwork-Id: 13224323 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 5C313C7618E for ; Wed, 26 Apr 2023 09:29:32 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qrdllGEU02H2JfHnAZ/wJIxa02r6x577lrSKenjwI+g=; b=ZfNvdu9uHyeZci cEpFmHhiVv7POmtiwSD7irYaFsnVk2dXaQ0m5jGv3IFjwKKV8r4ojsixmqfoMUaH8Nfb8puIFE0Xb V3n0bMJjPyVHlPSvAumTW1bjmZ2MHhVpSRWhzLaqRlFiGRnwwJcN5bTX0N+rmY5vBHESgQ0yadwLz WHaFWev86tpruJMc6eS4hoVihmSwR0Bp3ycAzMvb385B49Do5/TBFGHHTG5tHV2xGiHBDgnm4ThZU vNE6LjyOxZE30du6SPjj3dQG2XqAy5C5Spey17sNy9GIOhuycX5+kFDDpP+cxGRzm3qBVOLqMRjI0 IzGskabh1JjSR4sBQQRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1prbS2-003Iuv-1S; Wed, 26 Apr 2023 09:28:38 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1prbRy-003ItZ-2A; Wed, 26 Apr 2023 09:28:36 +0000 X-UUID: 9b02700ce41211ed8687db9d93187ff1-20230426 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=wWf3GUFYmwSl1J62g2cxIVVBIwDNb1QbOpyYFvMvIFQ=; b=Az0b17l1mA5LcGTLSYiSLieHEN01zhC5INzIE5FMnv1ISVaml1nXF+4cNxJwaRLKS+NFf3lHXr1y5LqNnCMiGZ9m2jsjiNelNvnvM44UMRIhuUnOAfKEr0FjZjBkQtx2VZSPU3p3fQaLiBpuEJMAEHX2xnPr/H9Z2QEbUBh8SDQ=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22,REQID:d672b9ee-8242-4c7b-af43-0f42bdd18737,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:120426c,CLOUDID:202f4e85-cd9c-45f5-8134-710979e3df0e,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: 9b02700ce41211ed8687db9d93187ff1-20230426 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 240922171; Wed, 26 Apr 2023 02:13:27 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 26 Apr 2023 17:12:25 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Wed, 26 Apr 2023 17:12:25 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Matthias Brugger , AngeloGioacchino Del Regno , Tinghan Shen CC: , , , , , Subject: [PATCH v10 06/11] remoteproc: mediatek: Probe multi-core SCP Date: Wed, 26 Apr 2023 17:12:06 +0800 Message-ID: <20230426091211.21557-7-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230426091211.21557-1-tinghan.shen@mediatek.com> References: <20230426091211.21557-1-tinghan.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230426_022834_715099_B21E6FF1 X-CRM114-Status: GOOD ( 26.30 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The difference of single-core SCP and multi-core SCP device tree is the presence of child device nodes described SCP cores. The SCP driver populates the platform device and checks the child nodes to identify whether it's a single-core SCP or a multi-core SCP. Add the remoteproc instances for single-core SCP and multi-core SCP to the new added SCP cluster list. When the SCP driver is removed, it cleanup resources by walking through the cluster list. Signed-off-by: Tinghan Shen --- drivers/remoteproc/mtk_common.h | 3 + drivers/remoteproc/mtk_scp.c | 188 ++++++++++++++++++++++++++++---- 2 files changed, 172 insertions(+), 19 deletions(-) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index c0905aec3b4b..b73b60c22ea1 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -128,6 +128,9 @@ struct mtk_scp { size_t dram_size; struct rproc_subdev *rpmsg_subdev; + + struct list_head elem; + struct list_head *cluster; }; /** diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index 5e4982f4d5dc..0b052b0acf2e 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -28,6 +28,7 @@ struct mtk_scp_of_cluster { void __iomem *l1tcm_base; size_t l1tcm_size; phys_addr_t l1tcm_phys; + struct list_head mtk_scp_cluster; }; /** @@ -862,21 +863,31 @@ static void scp_remove_rpmsg_subdev(struct mtk_scp *scp) } } -static int scp_rproc_init(struct platform_device *pdev) +static int scp_rproc_init(struct platform_device *cluster_pdev, + struct platform_device *core_pdev, + const struct mtk_scp_of_data *of_data) { - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - struct mtk_scp_of_cluster *of_cluster = platform_get_drvdata(pdev); + struct platform_device *pdev; + struct device *dev; + struct device_node *np; + struct mtk_scp_of_cluster *of_cluster = platform_get_drvdata(cluster_pdev); struct mtk_scp *scp; struct rproc *rproc; struct resource *res; const char *fw_name = "scp.img"; int ret, i; + if (core_pdev) + pdev = core_pdev; + else + pdev = cluster_pdev; + + dev = &pdev->dev; ret = rproc_of_parse_firmware(dev, 0, &fw_name); if (ret < 0 && ret != -EINVAL) return ret; + np = dev->of_node; rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp)); if (!rproc) return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n"); @@ -884,7 +895,7 @@ static int scp_rproc_init(struct platform_device *pdev) scp = rproc->priv; scp->rproc = rproc; scp->dev = dev; - scp->data = of_device_get_match_data(dev); + scp->data = of_data; platform_set_drvdata(pdev, scp); scp->reg_base = of_cluster->reg_base; @@ -934,10 +945,6 @@ static int scp_rproc_init(struct platform_device *pdev) goto remove_subdev; } - ret = rproc_add(rproc); - if (ret) - goto remove_subdev; - return 0; remove_subdev: @@ -952,6 +959,121 @@ static int scp_rproc_init(struct platform_device *pdev) return ret; } +static void scp_rproc_free(struct mtk_scp *scp) +{ + int i; + + scp_remove_rpmsg_subdev(scp); + scp_ipi_unregister(scp, SCP_IPI_INIT); + scp_unmap_memory_region(scp); + for (i = 0; i < SCP_IPI_MAX; i++) + mutex_destroy(&scp->ipi_desc[i].lock); + mutex_destroy(&scp->send_lock); +} + +static int scp_is_single_core(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev_of_node(dev); + struct device_node *child; + + child = of_get_next_available_child(np, NULL); + if (!child) + return dev_err_probe(dev, -ENODEV, "No child node\n"); + + of_node_put(child); + return of_node_name_eq(child, "cros-ec-rpmsg"); +} + +static int scp_cluster_init(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev_of_node(dev); + struct platform_device *cpdev; + struct device_node *child; + struct mtk_scp_of_cluster *of_cluster = platform_get_drvdata(pdev); + const struct mtk_scp_of_data **cluster_of_data; + struct list_head *cluster = &of_cluster->mtk_scp_cluster; + struct mtk_scp *scp, *temp; + int core_id = 0; + int ret; + + ret = scp_is_single_core(pdev); + if (ret < 0) + return ret; + + if (ret) { + dev_dbg(dev, "single-core scp\n"); + + /* When using the SCP node phandle on exported SCP APIs, the drvdata + * is expected to be the mtk_scp object, and as a result, it is intended + * to be overwritten for single-core SCP usage. + */ + ret = scp_rproc_init(pdev, NULL, of_device_get_match_data(dev)); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize single-core scp\n"); + + scp = platform_get_drvdata(pdev); + list_add_tail(&scp->elem, cluster); + scp->cluster = cluster; + } else { + dev_dbg(dev, "multi-core scp\n"); + + cluster_of_data = (const struct mtk_scp_of_data **)of_device_get_match_data(dev); + + for_each_available_child_of_node(np, child) { + if (!cluster_of_data[core_id]) { + ret = -EINVAL; + dev_err(dev, "Not support core %d\n", core_id); + of_node_put(child); + goto init_fail; + } + + cpdev = of_find_device_by_node(child); + if (!cpdev) { + ret = -ENODEV; + dev_err(dev, "Not found platform device for core %d\n", core_id); + of_node_put(child); + goto init_fail; + } + + ret = scp_rproc_init(pdev, cpdev, cluster_of_data[core_id]); + if (ret) { + dev_err(dev, "Failed to initialize core %d rproc\n", core_id); + put_device(&cpdev->dev); + of_node_put(child); + goto init_fail; + } + scp = platform_get_drvdata(cpdev); + list_add_tail(&scp->elem, cluster); + scp->cluster = cluster; + put_device(&cpdev->dev); + + core_id++; + } + } + + list_for_each_entry_safe_reverse(scp, temp, cluster, elem) { + ret = rproc_add(scp->rproc); + if (ret) + goto add_fail; + } + + return 0; + +add_fail: + list_for_each_entry_continue(scp, cluster, elem) { + rproc_del(scp->rproc); + } +init_fail: + list_for_each_entry_safe_reverse(scp, temp, cluster, elem) { + list_del(&scp->elem); + scp_rproc_free(scp); + } + + return ret; +} + static int scp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -983,23 +1105,44 @@ static int scp_probe(struct platform_device *pdev) of_cluster->l1tcm_phys = res->start; } + INIT_LIST_HEAD(&of_cluster->mtk_scp_cluster); platform_set_drvdata(pdev, of_cluster); - return scp_rproc_init(pdev); + ret = devm_of_platform_populate(dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to populate platform devices\n"); + + ret = scp_cluster_init(pdev); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize scp cluster\n"); + + return 0; } static int scp_remove(struct platform_device *pdev) { - struct mtk_scp *scp = platform_get_drvdata(pdev); - int i; + struct mtk_scp *scp, *temp; + struct mtk_scp_of_cluster *of_cluster; + struct list_head *cluster; + int ret; - rproc_del(scp->rproc); - scp_remove_rpmsg_subdev(scp); - scp_ipi_unregister(scp, SCP_IPI_INIT); - scp_unmap_memory_region(scp); - for (i = 0; i < SCP_IPI_MAX; i++) - mutex_destroy(&scp->ipi_desc[i].lock); - mutex_destroy(&scp->send_lock); + ret = scp_is_single_core(pdev); + if (ret < 0) + return ret; + + if (ret) { + scp = platform_get_drvdata(pdev); + cluster = scp->cluster; + } else { + of_cluster = platform_get_drvdata(pdev); + cluster = &of_cluster->mtk_scp_cluster; + } + + list_for_each_entry_safe_reverse(scp, temp, cluster, elem) { + list_del(&scp->elem); + rproc_del(scp->rproc); + scp_rproc_free(scp); + } return 0; } @@ -1078,12 +1221,19 @@ static const struct mtk_scp_of_data mt8195_of_data_c1 = { .host_to_scp_int_bit = MT8195_CORE1_HOST_IPC_INT_BIT, }; +static const struct mtk_scp_of_data *mt8195_of_data_cores[] = { + &mt8195_of_data, + &mt8195_of_data_c1, + NULL +}; + static const struct of_device_id mtk_scp_of_match[] = { { .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data }, { .compatible = "mediatek,mt8186-scp", .data = &mt8186_of_data }, { .compatible = "mediatek,mt8188-scp", .data = &mt8188_of_data }, { .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data }, { .compatible = "mediatek,mt8195-scp", .data = &mt8195_of_data }, + { .compatible = "mediatek,mt8195-scp-dual", .data = &mt8195_of_data_cores }, {}, }; MODULE_DEVICE_TABLE(of, mtk_scp_of_match);