From patchwork Tue May 3 07:14:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 12835198 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 9F710C433EF for ; Tue, 3 May 2022 07:34:33 +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=lAvuL0mRbVwADiEeVl8AQTLkUqNH9DhX18xyfNmyGhE=; b=D61IMBS6dT46Vb l2BDGIWvDqJ4+VwUYFrXw9PVpsbpdaP0pH561uyBeH5C5VmhCg3XINI6ukEXrhF3EnH/d4jFlOC28 Lvec584S9H4xtSWtUw5dAHxKSKwSAFeRUaKUC5mCb1DNEvLjuDJrdvKdlOLatFYKardgRIvQvCtdH DmKw+M8ijkZAnc/Pr4Cm6WbEkAT+tpyioCHc1FQEQ4nll5TpS7BGTjHBQHKbTcWniJz1mEG8n011f LVi/z0EmO7ZlxbkYKK+C3pwYLrc1NbFIdReIxLjUb0lOqH/YA9q5c0rqoUDjUN2oc52Ud3oCYrvL+ YY4ko8c/jxVDi/MIgI5g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nln1y-004JFg-4L; Tue, 03 May 2022 07:33:11 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nlmuU-004FhO-Mk; Tue, 03 May 2022 07:25:28 +0000 X-UUID: 4b6d1a840e8449f68a6fad5d56a6dc18-20220503 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:4f767a4f-00cd-4c11-87d8-da70994a8034, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:faefae9, CLOUDID:69084bc7-85ee-4ac1-ac05-bd3f1e72e732, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: 4b6d1a840e8449f68a6fad5d56a6dc18-20220503 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1605961422; Tue, 03 May 2022 00:25:17 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 3 May 2022 00:16:23 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Tue, 3 May 2022 15:16:22 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 3 May 2022 15:16:21 +0800 From: Yong Wu To: Joerg Roedel , Rob Herring , Matthias Brugger , Will Deacon CC: Robin Murphy , Krzysztof Kozlowski , Tomasz Figa , , , , , , Hsin-Yi Wang , , , , , , "AngeloGioacchino Del Regno" , , , , Subject: [PATCH v7 11/36] iommu/mediatek: Add a flag DCM_DISABLE Date: Tue, 3 May 2022 15:14:02 +0800 Message-ID: <20220503071427.2285-12-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220503071427.2285-1-yong.wu@mediatek.com> References: <20220503071427.2285-1-yong.wu@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-20220503_002526_788053_93AE7015 X-CRM114-Status: GOOD ( 13.70 ) 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 In the infra iommu, we should disable DCM. add a new flag for this. Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno --- drivers/iommu/mtk_iommu.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d91a0c138536..92f172a772d1 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -51,6 +51,8 @@ #define F_MMU_STANDARD_AXI_MODE_MASK (BIT(3) | BIT(19)) #define REG_MMU_DCM_DIS 0x050 +#define F_MMU_DCM BIT(8) + #define REG_MMU_WR_LEN_CTRL 0x054 #define F_MMU_WR_THROT_DIS_MASK (BIT(5) | BIT(21)) @@ -119,6 +121,7 @@ #define HAS_LEGACY_IVRP_PADDR BIT(7) #define IOVA_34_EN BIT(8) #define SHARE_PGTABLE BIT(9) /* 2 HW share pgtable */ +#define DCM_DISABLE BIT(10) #define MTK_IOMMU_HAS_FLAG(pdata, _x) \ ((((pdata)->flags) & (_x)) == (_x)) @@ -765,7 +768,11 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) regval = F_MMU_VLD_PA_RNG(7, 4); writel_relaxed(regval, data->base + REG_MMU_VLD_PA_RNG); } - writel_relaxed(0, data->base + REG_MMU_DCM_DIS); + if (MTK_IOMMU_HAS_FLAG(data->plat_data, DCM_DISABLE)) + writel_relaxed(F_MMU_DCM, data->base + REG_MMU_DCM_DIS); + else + writel_relaxed(0, data->base + REG_MMU_DCM_DIS); + if (MTK_IOMMU_HAS_FLAG(data->plat_data, WR_THROT_EN)) { /* write command throttling mode */ regval = readl_relaxed(data->base + REG_MMU_WR_LEN_CTRL);