From patchwork Thu Sep 23 11:58:28 2021 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: 12512739 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D86BC433EF for ; Thu, 23 Sep 2021 12:27:59 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 1B0836058D for ; Thu, 23 Sep 2021 12:27:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1B0836058D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=pIEXDdQxJrmx3m2WwLacWVe5GVeDqmN3TSBhkdfOBY4=; b=CjDGli9nzUMDdZ rgsd6BzVIbLmE5hTyKuua1ai/ecUZ93HYMVazqRmPYnMIdjaZ6TrPeAiftDJ/Q3llUofW8M+g8nT/ 60HjsKcyTiijRtRnvBk0pkNxep2Rm44kUp31tqtTjNv26bUV8lWfHBBme+CP2NgBYYaBnv7dKBHs9 ff27AYL9J8ajiHWmtFd0/njge96cByDBxhd6TtOLb9XAFRtge+s/IsUcfh8u+dx4zV2i4CScn76k8 WzXmoo8e4DkS03cdNlf4eRhkihL64o67FzXvUQ8BNiBOI368l/HoKVYcFYxodzjU1Kl9oP/8TX0Zg GCirfJdYwemINmlgHAmw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mTNpJ-00BNQz-Pa; Thu, 23 Sep 2021 12:27:45 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mTNa7-00BFq5-Nw; Thu, 23 Sep 2021 12:12:05 +0000 X-UUID: d90dea9257284120bbf394738d8cdd8e-20210923 X-UUID: d90dea9257284120bbf394738d8cdd8e-20210923 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1153852133; Thu, 23 Sep 2021 05:12:00 -0700 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 23 Sep 2021 05:02:24 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 23 Sep 2021 20:02:23 +0800 Received: from localhost.localdomain (10.17.3.154) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 23 Sep 2021 20:02:22 +0800 From: Yong Wu To: Joerg Roedel , Rob Herring , "Matthias Brugger" , Will Deacon , Robin Murphy CC: Krzysztof Kozlowski , Tomasz Figa , , , , , , , Hsin-Yi Wang , , , , , Subject: [PATCH v3 21/33] iommu/mediatek: Add infra iommu support Date: Thu, 23 Sep 2021 19:58:28 +0800 Message-ID: <20210923115840.17813-22-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210923115840.17813-1-yong.wu@mediatek.com> References: <20210923115840.17813-1-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-20210923_051203_836008_B94D81D4 X-CRM114-Status: GOOD ( 20.08 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The infra iommu enable bits in mt8195 is in the pericfg register segment, use regmap to update it. If infra iommu master translation fault, It don't have the larbid/portid, thus print out the whole register value. Since regmap_update_bits may fail, add return value for mtk_iommu_config. Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno --- drivers/iommu/mtk_iommu.c | 36 +++++++++++++++++++++++++++++------- drivers/iommu/mtk_iommu.h | 2 ++ 2 files changed, 31 insertions(+), 7 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d103e4f33078..37d6dfb4feab 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -112,6 +112,8 @@ #define MTK_PROTECT_PA_ALIGN 256 +#define PERICFG_IOMMU_1 0x714 + #define HAS_4GB_MODE BIT(0) /* HW will use the EMI clock if there isn't the "bclk". */ #define HAS_BCLK BIT(1) @@ -324,8 +326,8 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id) write ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ)) { dev_err_ratelimited( data->dev, - "fault type=0x%x iova=0x%llx pa=0x%llx larb=%d port=%d layer=%d %s\n", - int_state, fault_iova, fault_pa, fault_larb, fault_port, + "fault type=0x%x iova=0x%llx pa=0x%llx master=0x%x(larb=%d port=%d) layer=%d %s\n", + int_state, fault_iova, fault_pa, regval, fault_larb, fault_port, layer, write ? "write" : "read"); } @@ -369,14 +371,15 @@ static int mtk_iommu_get_domain_id(struct device *dev, return -EINVAL; } -static void mtk_iommu_config(struct mtk_iommu_data *data, struct device *dev, - bool enable, unsigned int domid) +static int mtk_iommu_config(struct mtk_iommu_data *data, struct device *dev, + bool enable, unsigned int domid) { struct mtk_smi_larb_iommu *larb_mmu; unsigned int larbid, portid; struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); const struct mtk_iommu_iova_region *region; - int i; + u32 peri_mmuen, peri_mmuen_msk; + int i, ret = 0; for (i = 0; i < fwspec->num_ids; ++i) { larbid = MTK_M4U_TO_LARB(fwspec->ids[i]); @@ -396,8 +399,19 @@ static void mtk_iommu_config(struct mtk_iommu_data *data, struct device *dev, larb_mmu->mmu |= MTK_SMI_MMU_EN(portid); else larb_mmu->mmu &= ~MTK_SMI_MMU_EN(portid); + } else if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_INFRA)) { + peri_mmuen_msk = BIT(portid); + peri_mmuen = enable ? peri_mmuen_msk : 0; + + ret = regmap_update_bits(data->pericfg, PERICFG_IOMMU_1, + peri_mmuen_msk, peri_mmuen); + if (ret) + dev_err(dev, "%s iommu(%s) inframaster 0x%x fail(%d).\n", + enable ? "enable" : "disable", + dev_name(data->dev), peri_mmuen_msk, ret); } } + return ret; } static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom, @@ -504,8 +518,7 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, pm_runtime_put(m4udev); } - mtk_iommu_config(data, dev, true, domid); - return 0; + return mtk_iommu_config(data, dev, true, domid); } static void mtk_iommu_detach_device(struct iommu_domain *domain, @@ -921,6 +934,15 @@ static int mtk_iommu_probe(struct platform_device *pdev) ret = mtk_iommu_mm_dts_parse(dev, &match, data); if (ret) goto out_runtime_disable; + } else if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_INFRA) && + data->plat_data->pericfg_comp_str) { + infracfg = syscon_regmap_lookup_by_compatible(data->plat_data->pericfg_comp_str); + if (IS_ERR(infracfg)) { + ret = PTR_ERR(infracfg); + goto out_runtime_disable; + } + + data->pericfg = infracfg; } platform_set_drvdata(pdev, data); diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index 5b32277fee99..d83c79bf800a 100644 --- a/drivers/iommu/mtk_iommu.h +++ b/drivers/iommu/mtk_iommu.h @@ -55,6 +55,7 @@ struct mtk_iommu_plat_data { u32 flags; u32 inv_sel_reg; + char *pericfg_comp_str; struct list_head *hw_list; unsigned int iova_region_nr; const struct mtk_iommu_iova_region *iova_region; @@ -80,6 +81,7 @@ struct mtk_iommu_data { struct device *smicomm_dev; struct dma_iommu_mapping *mapping; /* For mtk_iommu_v1.c */ + struct regmap *pericfg; /* * In the sharing pgtable case, list data->list to the global list like m4ulist.