From patchwork Thu Feb 9 07:40:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tinghan Shen X-Patchwork-Id: 13134135 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 E2322C636D4 for ; Thu, 9 Feb 2023 07:42:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230150AbjBIHmB (ORCPT ); Thu, 9 Feb 2023 02:42:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229978AbjBIHl0 (ORCPT ); Thu, 9 Feb 2023 02:41:26 -0500 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97333442F9; Wed, 8 Feb 2023 23:41:02 -0800 (PST) X-UUID: 12eaa8dea84d11eda06fc9ecc4dadd91-20230209 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=ZSZ9etepUZrIqGGqnSYSy8UphY2tXSDIALwyklLT/8s=; b=ajU4lC5DvgUW+CvtySE6u33CJ137AiaSOS7tVEXjSS9UbVLmfRktbAOl5T8kMz4/doZ4ThEvQ/yUftN7vPcoqvV8dDbYgYMClMwcV6Nivyb4JYPXA+BoPaOzgUOLUuMbQnwuMt5+UI/57HBGuIJtdeUHruUDV46KWaePglbMLf0=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.19,REQID:14df8ebf-1415-44fd-a8b0-a0928e04537d,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:885ddb2,CLOUDID:9e19eff7-ff42-4fb0-b929-626456a83c14,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-UUID: 12eaa8dea84d11eda06fc9ecc4dadd91-20230209 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 766768140; Thu, 09 Feb 2023 15:40:50 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Thu, 9 Feb 2023 15:40:49 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 9 Feb 2023 15:40:49 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , "Krzysztof Kozlowski" , Matthias Brugger , AngeloGioacchino Del Regno , Tinghan Shen CC: , , , , , Subject: [PATCH v4 07/12] remoteproc: mediatek: Probe multi-core SCP Date: Thu, 9 Feb 2023 15:40:16 +0800 Message-ID: <20230209074021.13936-8-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230209074021.13936-1-tinghan.shen@mediatek.com> References: <20230209074021.13936-1-tinghan.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.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. The resource structure of the multi-core SCP is a list of remoteproc instances which is different to the single-core SCP. The corresponding resource releasing action is added based on the type of SCP. Signed-off-by: Tinghan Shen --- drivers/remoteproc/mtk_common.h | 7 ++ drivers/remoteproc/mtk_scp.c | 173 ++++++++++++++++++++++++++++---- 2 files changed, 160 insertions(+), 20 deletions(-) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index 20c1a90be77d..0b2c4bbb55f0 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -119,6 +119,10 @@ struct mtk_scp_of_regs { phys_addr_t l1tcm_phys; }; +struct mtk_scp_cluster { + struct list_head cores; +}; + struct mtk_scp { struct device *dev; struct rproc *rproc; @@ -147,6 +151,9 @@ struct mtk_scp { size_t dram_size; struct rproc_subdev *rpmsg_subdev; + + struct list_head elem; + struct mtk_scp_cluster *cluster; }; /** diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index feebcadd56cd..a25141c6c4cb 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -855,7 +855,9 @@ static void scp_remove_rpmsg_subdev(struct mtk_scp *scp) } static int scp_rproc_init(struct platform_device *pdev, - struct mtk_scp_of_regs *of_regs) + struct mtk_scp_of_regs *of_regs, + const struct mtk_scp_of_data *of_data, + struct mtk_scp_cluster *cluster) { struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; @@ -876,7 +878,8 @@ static int scp_rproc_init(struct platform_device *pdev, scp = (struct mtk_scp *)rproc->priv; scp->rproc = rproc; scp->dev = dev; - scp->data = of_device_get_match_data(dev); + scp->data = of_data; + scp->cluster = cluster; platform_set_drvdata(pdev, scp); scp->reg_base = of_regs->reg_base; @@ -925,9 +928,13 @@ static int scp_rproc_init(struct platform_device *pdev, goto remove_subdev; } - ret = rproc_add(rproc); - if (ret) - goto remove_subdev; + if (scp->cluster) { + list_add_tail(&scp->elem, &scp->cluster->cores); + } else { + ret = rproc_add(rproc); + if (ret) + goto remove_subdev; + } return 0; @@ -943,11 +950,115 @@ 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 void scp_rproc_exit(void *data) +{ + struct mtk_scp *scp = platform_get_drvdata(data); + + rproc_del(scp->rproc); + scp_rproc_free(scp); +} + +static int scp_cluster_init(struct platform_device *pdev, + struct mtk_scp_of_regs *of_regs) +{ + struct mtk_scp_cluster *cluster = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + struct device_node *np = dev_of_node(dev); + struct platform_device *cpdev; + struct device_node *child; + const struct mtk_scp_of_data **cluster_of_data; + struct mtk_scp *scp, *temp; + int core_id, num_cores; + int ret; + + cluster_of_data = (const struct mtk_scp_of_data **)of_device_get_match_data(dev); + + for (num_cores = 0; cluster_of_data[num_cores]; num_cores++) + ; + + core_id = 0; + for_each_available_child_of_node(np, child) { + if (core_id >= num_cores) { + 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(cpdev, of_regs, cluster_of_data[core_id], cluster); + put_device(&cpdev->dev); + if (ret) { + dev_err(dev, "Failed to initialize core %d rproc\n", core_id); + of_node_put(child); + goto init_fail; + } + + of_node_put(child); + core_id++; + } + + list_for_each_entry_safe_reverse(scp, temp, &cluster->cores, elem) { + ret = rproc_add(scp->rproc); + if (ret) + goto add_fail; + } + + return 0; + +add_fail: + list_for_each_entry_continue(scp, &cluster->cores, elem) { + rproc_del(scp->rproc); + } +init_fail: + list_for_each_entry_safe_reverse(scp, temp, &cluster->cores, elem) { + list_del(&scp->elem); + cpdev = to_platform_device(scp->dev); + scp_rproc_free(scp); + } + return ret; +} + +static void scp_cluster_exit(void *data) +{ + struct mtk_scp_cluster *cluster = platform_get_drvdata(data); + struct platform_device *cpdev; + struct mtk_scp *scp, *temp; + + list_for_each_entry_safe_reverse(scp, temp, &cluster->cores, elem) { + list_del(&scp->elem); + cpdev = to_platform_device(scp->dev); + scp_rproc_exit(cpdev); + } +} + static int scp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct device_node *core_node; struct resource *res; struct mtk_scp_of_regs scp_regs; + struct mtk_scp_cluster *cluster; int ret; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg"); @@ -968,23 +1079,39 @@ static int scp_probe(struct platform_device *pdev) scp_regs.l1tcm_phys = res->start; } - return scp_rproc_init(pdev, of_device_get_match_data(dev), &scp_regs); -} + ret = devm_of_platform_populate(dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to populate platform devices\n"); -static int scp_remove(struct platform_device *pdev) -{ - struct mtk_scp *scp = platform_get_drvdata(pdev); - int i; + core_node = of_get_child_by_name(np, "scp"); + of_node_put(core_node); - 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); + if (!core_node) { + dev_info(dev, "single-core scp\n"); - return 0; + ret = scp_rproc_init(pdev, &scp_regs, of_device_get_match_data(dev), NULL); + if (ret) + return dev_err_probe(dev, ret, "Failed to init single core scp\n"); + + ret = devm_add_action_or_reset(dev, scp_rproc_exit, pdev); + } else { + dev_info(dev, "multi-core scp\n"); + + cluster = devm_kzalloc(dev, sizeof(*cluster), GFP_KERNEL); + if (!cluster) + return dev_err_probe(dev, -ENOMEM, "Unable to allocate scp cluster\n"); + + INIT_LIST_HEAD(&cluster->cores); + platform_set_drvdata(pdev, cluster); + + ret = scp_cluster_init(pdev, &scp_regs); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize scp cluster\n"); + + ret = devm_add_action_or_reset(dev, scp_cluster_exit, pdev); + } + + return ret; } static const struct mtk_scp_of_data mt8183_of_data = { @@ -1061,19 +1188,25 @@ 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); static struct platform_driver mtk_scp_driver = { .probe = scp_probe, - .remove = scp_remove, .driver = { .name = "mtk-scp", .of_match_table = mtk_scp_of_match,