From patchwork Fri Jul 7 05:26:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tinghan Shen X-Patchwork-Id: 13304417 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 75F14C0015E for ; Fri, 7 Jul 2023 05:27:22 +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=oFMRFdYIcJ4FSNHBwAhKZd3IqhyqgLN2vJDEfB8EdLw=; b=p0WvYC3mALU33U QmsL0/Xb6FdEM6apUcOp8OrSoWYlVQjTXpsNkfpxGxb3SjwKzjuoROhXUpfV+CyG0F83MR0FirnnQ c4FBGvD+Eqeorgjm9U1fxIGVXZk722CncYWZ9RpD3hWsXkwA2fOQAXfVbYegj4Uar77j7MpsAoWMM qz4oEqra1/HlNAIFVbUKL3hZlau0xqqQWX1Jvq+SriCJ2ANQElFwiYn6ym7MDUqO5EuauRNx74xeW 5zWNc2WLHz6uNBtwrKtiYPxalCCTg9eXREnw5+bj68UMBwBzO9H8V4AvrBHs5Q+Xl94gW0kzgk8Gt 5PtfPkB/erAdQkRbvPZA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qHdza-003bgC-37; Fri, 07 Jul 2023 05:26:54 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qHdzW-003bdP-1n; Fri, 07 Jul 2023 05:26:52 +0000 X-UUID: de8e0ee21c8611ee83ed1395ce914268-20230706 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=TyIzjFgJ3j/3OAYJZ/4iJ1rqksJJnLql1kpgM413Ykw=; b=GOBhLrvbi1wzA+YlPFgUU1SE9m+aAytVxCmtjjsyO7/8stfbdLPRhRaq3pBAvw/Hq8v7GHevedMgJPHCFqRyT4JeADjiY4fOc5+eIR0D5zycPHnLICGcfCYqAvb3U1j6McT+/tXjHsEhSrCbd4jMudzzrwh3/Y50F+8/xfp3zjU=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.27,REQID:fd643528-afcf-44cf-94e2-620f127f4cbd,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:01c9525,CLOUDID:276eaa0d-26a8-467f-b838-f99719a9c083,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,LES:1,SPR:NO X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: de8e0ee21c8611ee83ed1395ce914268-20230706 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1647964136; Thu, 06 Jul 2023 22:26:48 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) 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 15.2.1118.26; Fri, 7 Jul 2023 13:26:15 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Fri, 7 Jul 2023 13:26:15 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , "Tinghan Shen" CC: , , , , , Subject: [PATCH v14 05/12] remoteproc: mediatek: Introduce cluster on single-core SCP Date: Fri, 7 Jul 2023 13:26:05 +0800 Message-ID: <20230707052612.27521-6-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230707052612.27521-1-tinghan.shen@mediatek.com> References: <20230707052612.27521-1-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-20230706_222650_602400_3503AEE6 X-CRM114-Status: GOOD ( 23.77 ) 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 This is the preliminary step for probing multi-core SCP. The initialization procedure for remoteproc is similar for both single-core and multi-core architectures and is reusing to avoid redundant code. Rewrite the probing flow of single-core SCP to adapt with the 'cluster' concept needed by probing the multi-core SCP. The main differences are, - the SCP core object(s) is maintained at the cluster list instead of at the platform device driver data property. - save the cluster information at the platform device driver data property. - In order to keep the compatibility of exported SCP APIs which getting the SCP core object by SCP node phandle, move the SCP core object pointers to the platform device platform data property. The registers of config and l1tcm are shared for multi-core SCP. Reuse the mapped addresses for all cores. Signed-off-by: Tinghan Shen --- drivers/remoteproc/mtk_common.h | 2 + drivers/remoteproc/mtk_scp.c | 151 +++++++++++++++++++++++--------- 2 files changed, 112 insertions(+), 41 deletions(-) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index c0905aec3b4b..56395e8664cb 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -128,6 +128,8 @@ struct mtk_scp { size_t dram_size; struct rproc_subdev *rpmsg_subdev; + + struct list_head elem; }; /** diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index 48e759c2d486..3a8c8bcfa46b 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -23,6 +23,14 @@ #define MAX_CODE_SIZE 0x500000 #define SECTION_NAME_IPI_BUFFER ".ipi_buffer" +struct mtk_scp_of_cluster { + void __iomem *reg_base; + void __iomem *l1tcm_base; + size_t l1tcm_size; + phys_addr_t l1tcm_phys; + struct list_head mtk_scp_list; +}; + /** * scp_get() - get a reference to SCP. * @@ -51,7 +59,7 @@ struct mtk_scp *scp_get(struct platform_device *pdev) return NULL; } - return platform_get_drvdata(scp_pdev); + return *(struct mtk_scp **)dev_get_platdata(&scp_pdev->dev); } EXPORT_SYMBOL_GPL(scp_get); @@ -809,14 +817,14 @@ static void scp_unmap_memory_region(struct mtk_scp *scp) static int scp_register_ipi(struct platform_device *pdev, u32 id, ipi_handler_t handler, void *priv) { - struct mtk_scp *scp = platform_get_drvdata(pdev); + struct mtk_scp *scp = *(struct mtk_scp **)dev_get_platdata(&pdev->dev); return scp_ipi_register(scp, id, handler, priv); } static void scp_unregister_ipi(struct platform_device *pdev, u32 id) { - struct mtk_scp *scp = platform_get_drvdata(pdev); + struct mtk_scp *scp = *(struct mtk_scp **)dev_get_platdata(&pdev->dev); scp_ipi_unregister(scp, id); } @@ -824,7 +832,7 @@ static void scp_unregister_ipi(struct platform_device *pdev, u32 id) static int scp_send_ipi(struct platform_device *pdev, u32 id, void *buf, unsigned int len, unsigned int wait) { - struct mtk_scp *scp = platform_get_drvdata(pdev); + struct mtk_scp *scp = *(struct mtk_scp **)dev_get_platdata(&pdev->dev); return scp_ipi_send(scp, id, buf, len, wait); } @@ -854,7 +862,8 @@ static void scp_remove_rpmsg_subdev(struct mtk_scp *scp) } } -static int scp_probe(struct platform_device *pdev) +static struct mtk_scp *scp_rproc_init(struct platform_device *pdev, + struct mtk_scp_of_cluster *scp_cluster) { struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; @@ -866,52 +875,42 @@ static int scp_probe(struct platform_device *pdev) ret = rproc_of_parse_firmware(dev, 0, &fw_name); if (ret < 0 && ret != -EINVAL) - return ret; + return ERR_PTR(ret); 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"); + if (!rproc) { + dev_err(dev, "unable to allocate remoteproc\n"); + return ERR_PTR(-ENOMEM); + } scp = rproc->priv; scp->rproc = rproc; scp->dev = dev; scp->data = of_device_get_match_data(dev); - platform_set_drvdata(pdev, scp); + platform_device_add_data(pdev, &scp, sizeof(scp)); + + scp->reg_base = scp_cluster->reg_base; + scp->l1tcm_base = scp_cluster->l1tcm_base; + scp->l1tcm_size = scp_cluster->l1tcm_size; + scp->l1tcm_phys = scp_cluster->l1tcm_phys; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram"); scp->sram_base = devm_ioremap_resource(dev, res); - if (IS_ERR(scp->sram_base)) - return dev_err_probe(dev, PTR_ERR(scp->sram_base), - "Failed to parse and map sram memory\n"); + if (IS_ERR(scp->sram_base)) { + dev_err(dev, "Failed to parse and map sram memory\n"); + return ERR_CAST(scp->sram_base); + } scp->sram_size = resource_size(res); scp->sram_phys = res->start; - /* l1tcm is an optional memory region */ - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm"); - scp->l1tcm_base = devm_ioremap_resource(dev, res); - if (IS_ERR(scp->l1tcm_base)) { - ret = PTR_ERR(scp->l1tcm_base); - if (ret != -EINVAL) { - return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n"); - } - } else { - scp->l1tcm_size = resource_size(res); - scp->l1tcm_phys = res->start; - } - - scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg"); - if (IS_ERR(scp->reg_base)) - return dev_err_probe(dev, PTR_ERR(scp->reg_base), - "Failed to parse and map cfg memory\n"); - ret = scp->data->scp_clk_get(scp); if (ret) - return ret; + return ERR_PTR(ret); ret = scp_map_memory_region(scp); if (ret) - return ret; + return ERR_PTR(ret); mutex_init(&scp->send_lock); for (i = 0; i < SCP_IPI_MAX; i++) @@ -938,11 +937,7 @@ static int scp_probe(struct platform_device *pdev) goto remove_subdev; } - ret = rproc_add(rproc); - if (ret) - goto remove_subdev; - - return 0; + return scp; remove_subdev: scp_remove_rpmsg_subdev(scp); @@ -953,15 +948,13 @@ static int scp_probe(struct platform_device *pdev) mutex_destroy(&scp->ipi_desc[i].lock); mutex_destroy(&scp->send_lock); - return ret; + return ERR_PTR(ret); } -static void scp_remove(struct platform_device *pdev) +static void scp_free(struct mtk_scp *scp) { - struct mtk_scp *scp = platform_get_drvdata(pdev); int i; - rproc_del(scp->rproc); scp_remove_rpmsg_subdev(scp); scp_ipi_unregister(scp, SCP_IPI_INIT); scp_unmap_memory_region(scp); @@ -970,6 +963,82 @@ static void scp_remove(struct platform_device *pdev) mutex_destroy(&scp->send_lock); } +static int scp_cluster_init(struct platform_device *pdev) +{ + struct mtk_scp_of_cluster *scp_cluster = platform_get_drvdata(pdev); + struct list_head *cluster = &scp_cluster->mtk_scp_list; + struct mtk_scp *scp; + int ret; + + scp = scp_rproc_init(pdev, scp_cluster); + if (IS_ERR(scp)) + return PTR_ERR(scp); + + ret = rproc_add(scp->rproc); + if (ret) { + dev_err(dev, "Failed to add rproc\n"); + scp_free(scp); + return ret; + } + + list_add_tail(&scp->elem, cluster); + + return 0; +} + +static int scp_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mtk_scp_of_cluster *scp_cluster; + struct resource *res; + int ret; + + scp_cluster = devm_kzalloc(dev, sizeof(*scp_cluster), GFP_KERNEL); + if (!scp_cluster) + return -ENOMEM; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg"); + scp_cluster->reg_base = devm_ioremap_resource(dev, res); + if (IS_ERR(scp_cluster->reg_base)) + return dev_err_probe(dev, PTR_ERR(scp_cluster->reg_base), + "Failed to parse and map cfg memory\n"); + + /* l1tcm is an optional memory region */ + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm"); + scp_cluster->l1tcm_base = devm_ioremap_resource(dev, res); + if (IS_ERR(scp_cluster->l1tcm_base)) { + ret = PTR_ERR(scp_cluster->l1tcm_base); + if (ret != -EINVAL) + return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n"); + + scp_cluster->l1tcm_base = NULL; + } else { + scp_cluster->l1tcm_size = resource_size(res); + scp_cluster->l1tcm_phys = res->start; + } + + INIT_LIST_HEAD(&scp_cluster->mtk_scp_list); + platform_set_drvdata(pdev, scp_cluster); + + ret = scp_cluster_init(pdev); + if (ret) + return ret; + + return 0; +} + +static void scp_remove(struct platform_device *pdev) +{ + struct mtk_scp_of_cluster *scp_cluster = platform_get_drvdata(pdev); + struct mtk_scp *scp, *temp; + + list_for_each_entry_safe_reverse(scp, temp, &scp_cluster->mtk_scp_list, elem) { + list_del(&scp->elem); + rproc_del(scp->rproc); + scp_free(scp); + } +} + static const struct mtk_scp_of_data mt8183_of_data = { .scp_clk_get = mt8183_scp_clk_get, .scp_before_load = mt8183_scp_before_load,