From nobody Sun Sep 22 11:22:11 2024 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 955A0C433F5 for ; Tue, 25 Jan 2022 09:07:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1454970AbiAYJG5 (ORCPT ); Tue, 25 Jan 2022 04:06:57 -0500 Received: from mailgw01.mediatek.com ([60.244.123.138]:56956 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1454235AbiAYJBH (ORCPT ); Tue, 25 Jan 2022 04:01:07 -0500 X-UUID: 4bbf0ff7e3934ecf9c0869d24ab044aa-20220125 X-UUID: 4bbf0ff7e3934ecf9c0869d24ab044aa-20220125 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 124532831; Tue, 25 Jan 2022 16:59:51 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Tue, 25 Jan 2022 16:59:49 +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, 25 Jan 2022 16:59:48 +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 v4 21/35] iommu/mediatek: Add infra iommu support Date: Tue, 25 Jan 2022 16:56:20 +0800 Message-ID: <20220125085634.17972-22-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220125085634.17972-1-yong.wu@mediatek.com> References: <20220125085634.17972-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 doesn'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 531f4750c721..7176c212037f 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -112,6 +112,8 @@ =20 #define MTK_PROTECT_PA_ALIGN 256 =20 +#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) @@ -343,8 +345,8 @@ 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=3D0x%x iova=3D0x%llx pa=3D0x%llx larb=3D%d port=3D%d layer= =3D%d %s\n", - int_state, fault_iova, fault_pa, fault_larb, fault_port, + "fault type=3D0x%x iova=3D0x%llx pa=3D0x%llx master=3D0x%x(larb=3D%d po= rt=3D%d) layer=3D%d %s\n", + int_state, fault_iova, fault_pa, regval, fault_larb, fault_port, layer, write ? "write" : "read"); } =20 @@ -388,14 +390,15 @@ static int mtk_iommu_get_domain_id(struct device *dev, return -EINVAL; } =20 -static void mtk_iommu_config(struct mtk_iommu_data *data, struct device *d= ev, - bool enable, unsigned int domid) +static int mtk_iommu_config(struct mtk_iommu_data *data, struct device *de= v, + bool enable, unsigned int domid) { struct mtk_smi_larb_iommu *larb_mmu; unsigned int larbid, portid; struct iommu_fwspec *fwspec =3D dev_iommu_fwspec_get(dev); const struct mtk_iommu_iova_region *region; - int i; + u32 peri_mmuen, peri_mmuen_msk; + int i, ret =3D 0; =20 for (i =3D 0; i < fwspec->num_ids; ++i) { larbid =3D MTK_M4U_TO_LARB(fwspec->ids[i]); @@ -415,8 +418,19 @@ static void mtk_iommu_config(struct mtk_iommu_data *da= ta, struct device *dev, larb_mmu->mmu |=3D MTK_SMI_MMU_EN(portid); else larb_mmu->mmu &=3D ~MTK_SMI_MMU_EN(portid); + } else if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_INFRA)) { + peri_mmuen_msk =3D BIT(portid); + peri_mmuen =3D enable ? peri_mmuen_msk : 0; + + ret =3D 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; } =20 static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom, @@ -531,8 +545,7 @@ static int mtk_iommu_attach_device(struct iommu_domain = *domain, } mutex_unlock(&data->mutex); =20 - mtk_iommu_config(data, dev, true, domid); - return 0; + return mtk_iommu_config(data, dev, true, domid); =20 data_unlock: mutex_unlock(&data->mutex); @@ -956,6 +969,15 @@ static int mtk_iommu_probe(struct platform_device *pde= v) ret =3D 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 =3D syscon_regmap_lookup_by_compatible(data->plat_data->pericfg= _comp_str); + if (IS_ERR(infracfg)) { + ret =3D PTR_ERR(infracfg); + goto out_runtime_disable; + } + + data->pericfg =3D infracfg; } =20 platform_set_drvdata(pdev, data); diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index 82c51a034e6b..04e5e5e7fd62 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; =20 + 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; =20 struct dma_iommu_mapping *mapping; /* For mtk_iommu_v1.c */ + struct regmap *pericfg; =20 struct mutex mutex; /* Protect m4u_group/m4u_dom above */ =20 --=20 2.18.0