From patchwork Tue May 3 07:14:21 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: 12835175 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 C395CC433EF for ; Tue, 3 May 2022 07:25:58 +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=gQsoiJ0aGZw18xpy37P4JT8W9am7SsrHsrToJ+mmDvk=; b=A2FkcSkUvLnZKE 6CHq3ZyaZiRC8/WQNixPg4fYwogb+oz91Uo7L8DL6tZVBoTUjqq92tykfdcsZISZPSxHDSZ974Ihd eBtAhwACoqEHxLDB+yJx0G1EABjnUAZ9s2mwQeBwd26XZIJ2BriIyPKO2FKu62YCepYisvTVwmkK4 9Kuov/EHfDkookUk/+Un+8Ez3+NGZDH2f8Cfv3qJOSiW1aEp4if8ojGb8Szm00oYdqdFZ8j8l6jQ6 fxLnFK42kjj+GXurcsTV+C1yx3XXKq/x83QC42OtEqBXP7ouq/JxibCSjprudneQcaErqNYwyoelt TisuFlrfdeKbnosl743w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nlmtS-004FDN-P7; Tue, 03 May 2022 07:24:23 +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 1nlmo8-004Bzf-1H; Tue, 03 May 2022 07:18:53 +0000 X-UUID: 7bd0f9da88d3433f9c0e5393f3ebd30c-20220503 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:967e58a8-ab02-4dd4-9d46-d78fa6f18710, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-20,EDM:0,RT:1,SF:0,FILE:0,RULE:Release_Ham,AC TION:release,TS:-19 X-CID-META: VersionHash:faefae9, CLOUDID:dec4822f-6199-437e-8ab4-9920b4bc5b76, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: 7bd0f9da88d3433f9c0e5393f3ebd30c-20220503 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 668942805; Tue, 03 May 2022 00:18:45 -0700 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 3 May 2022 00:18:44 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 3 May 2022 15:18:42 +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 15:18:41 +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 30/36] iommu/mediatek: Initialise bank HW for each a bank Date: Tue, 3 May 2022 15:14:21 +0800 Message-ID: <20220503071427.2285-31-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_001852_145504_BD93AD36 X-CRM114-Status: GOOD ( 19.23 ) 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 The mt8195 IOMMU HW max support 5 banks, and regarding the banks' registers, it looks like: ---------------------------------------- |bank0 | bank1 | bank2 | bank3 | bank4| ---------------------------------------- |global | |control| null |regs | ----------------------------------------- |bank |bank |bank |bank |bank | |regs |regs |regs |regs |regs | | | | | | | ----------------------------------------- Each bank has some special bank registers and it share bank0's global control registers. this patch initialise the bank hw with the bankid. In the hw_init, we always initialise bank0's control register since we don't know if the bank0 is initialised. Additionally, About each bank's register base, always delta 0x1000. like bank[x + 1] = bank[x] + 0x1000. Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno --- drivers/iommu/mtk_iommu.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 968e1486e6fd..5f298cf6aac3 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -259,7 +259,7 @@ static void mtk_iommu_unbind(struct device *dev) static const struct iommu_ops mtk_iommu_ops; -static int mtk_iommu_hw_init(const struct mtk_iommu_data *data); +static int mtk_iommu_hw_init(const struct mtk_iommu_data *data, unsigned int bankid); #define MTK_IOMMU_TLB_ADDR(iova) ({ \ dma_addr_t _addr = iova; \ @@ -642,12 +642,14 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, mutex_lock(&data->mutex); bank = &data->bank[bankid]; - if (!bank->m4u_dom) { /* Initialize the M4U HW */ + if (!bank->m4u_dom) { /* Initialize the M4U HW for each a BANK */ ret = pm_runtime_resume_and_get(m4udev); - if (ret < 0) + if (ret < 0) { + dev_err(m4udev, "pm get fail(%d) in attach.\n", ret); goto err_unlock; + } - ret = mtk_iommu_hw_init(data); + ret = mtk_iommu_hw_init(data, bankid); if (ret) { pm_runtime_put(m4udev); goto err_unlock; @@ -897,11 +899,16 @@ static const struct iommu_ops mtk_iommu_ops = { } }; -static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) +static int mtk_iommu_hw_init(const struct mtk_iommu_data *data, unsigned int bankid) { + const struct mtk_iommu_bank_data *bankx = &data->bank[bankid]; const struct mtk_iommu_bank_data *bank0 = &data->bank[0]; u32 regval; + /* + * Global control settings are in bank0. May re-init these global registers + * since no sure if there is bank0 consumers. + */ if (data->plat_data->m4u_plat == M4U_MT8173) { regval = F_MMU_PREFETCH_RT_REPLACE_MOD | F_MMU_TF_PROT_TO_PROGRAM_ADDR_MT8173; @@ -944,13 +951,14 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) } writel_relaxed(regval, bank0->base + REG_MMU_MISC_CTRL); + /* Independent settings for each bank */ regval = F_L2_MULIT_HIT_EN | F_TABLE_WALK_FAULT_INT_EN | F_PREETCH_FIFO_OVERFLOW_INT_EN | F_MISS_FIFO_OVERFLOW_INT_EN | F_PREFETCH_FIFO_ERR_INT_EN | F_MISS_FIFO_ERR_INT_EN; - writel_relaxed(regval, bank0->base + REG_MMU_INT_CONTROL0); + writel_relaxed(regval, bankx->base + REG_MMU_INT_CONTROL0); regval = F_INT_TRANSLATION_FAULT | F_INT_MAIN_MULTI_HIT_FAULT | @@ -959,19 +967,19 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data) F_INT_TLB_MISS_FAULT | F_INT_MISS_TRANSACTION_FIFO_FAULT | F_INT_PRETETCH_TRANSATION_FIFO_FAULT; - writel_relaxed(regval, bank0->base + REG_MMU_INT_MAIN_CONTROL); + writel_relaxed(regval, bankx->base + REG_MMU_INT_MAIN_CONTROL); if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_LEGACY_IVRP_PADDR)) regval = (data->protect_base >> 1) | (data->enable_4GB << 31); else regval = lower_32_bits(data->protect_base) | upper_32_bits(data->protect_base); - writel_relaxed(regval, bank0->base + REG_MMU_IVRP_PADDR); + writel_relaxed(regval, bankx->base + REG_MMU_IVRP_PADDR); - if (devm_request_irq(bank0->parent_dev, bank0->irq, mtk_iommu_isr, 0, - dev_name(bank0->parent_dev), (void *)bank0)) { - writel_relaxed(0, bank0->base + REG_MMU_PT_BASE_ADDR); - dev_err(bank0->parent_dev, "Failed @ IRQ-%d Request\n", bank0->irq); + if (devm_request_irq(bankx->parent_dev, bankx->irq, mtk_iommu_isr, 0, + dev_name(bankx->parent_dev), (void *)bankx)) { + writel_relaxed(0, bankx->base + REG_MMU_PT_BASE_ADDR); + dev_err(bankx->parent_dev, "Failed @ IRQ-%d Request\n", bankx->irq); return -ENODEV; }