From patchwork Sat Dec 8 08:39:24 2018 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: 10719243 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E73D113BF for ; Sat, 8 Dec 2018 08:43:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D32F22CF9E for ; Sat, 8 Dec 2018 08:43:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C75E22CFA1; Sat, 8 Dec 2018 08:43:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6DE3A2CF9E for ; Sat, 8 Dec 2018 08:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WXsHjmxovM3tu/2jbPHlIDCqebJEFQR/7Xh1Ng4ZdUM=; b=JWktIJV0mJJofV MKUjkRQ4/rHYhT22w4ZYeqhlIuEFvgKjiIxnVzfIYqkuta7Vg4qaYGu+xMsrNMFW+DGEdisFJ+XSl TxZhGHC0chQd0nfmWBQqsDnakBdgOP8FzKdpNDOOhykfmQfDAZalA3MCOjGP3h680VVv/RCC+G4Tn 5p//7JmKm5CwrkmzWAZGhVAbHcm7q1WRlvWyDxX1vHJwc5LxSB8F8EtBkCCpDPqvuLxOkQt5hx4FN rq/tzkubxZ2xDJyJrZEQJza6STu+UgLf8XAcMoZDO4zZ4Wn2sgpHyZIRmxtkrajoH0uMQiHdrtHL2 tr7wQVQ40gg9pFXUtGrw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gVYCV-00049j-7G; Sat, 08 Dec 2018 08:43:03 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gVYCL-00045b-NN; Sat, 08 Dec 2018 08:43:01 +0000 X-UUID: 2d3fec8732ce4cac95338d6fe0456712-20181208 X-UUID: 2d3fec8732ce4cac95338d6fe0456712-20181208 Received: from mtkcas08.mediatek.inc [(172.21.101.126)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1367361255; Sat, 08 Dec 2018 16:42:39 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 8 Dec 2018 16:42:38 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sat, 8 Dec 2018 16:42:37 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Robin Murphy , Rob Herring Subject: [PATCH v4 11/18] iommu/mediatek: Add mmu1 support Date: Sat, 8 Dec 2018 16:39:24 +0800 Message-ID: <1544258371-4600-12-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1544258371-4600-1-git-send-email-yong.wu@mediatek.com> References: <1544258371-4600-1-git-send-email-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-20181208_004254_102990_772E4448 X-CRM114-Status: GOOD ( 13.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org, Nicolas Boichat , arnd@arndb.de, srv_heupstream@mediatek.com, Will Deacon , linux-kernel@vger.kernel.org, Tomasz Figa , iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, yong.wu@mediatek.com, Arvind Yadav , yingjoe.chen@mediatek.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Normally the M4U HW connect EMI with smi. the diagram is like below: EMI | M4U | smi-common | ----------------- | | | | ... larb0 larb1 larb2 larb3 Actually there are 2 mmu cells in the M4U HW, like this diagram: EMI --------- | | mmu0 mmu1 <- M4U | | --------- | smi-common | ----------------- | | | | ... larb0 larb1 larb2 larb3 This patch add support for mmu1. In order to get better performance, we could adjust some larbs go to mmu1 while the others still go to mmu0. This is controlled by a SMI COMMON register SMI_BUS_SEL(0x220). mt2712, mt8173 and mt8183 M4U HW all have 2 mmu cells. the default value of that register is 0 which means all the larbs go to mmu0 defaultly. This is a preparing patch for adjusting SMI_BUS_SEL for mt8183. Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 47 +++++++++++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 18 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index d91a554..1a87a1d 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -74,27 +74,32 @@ #define F_MISS_FIFO_ERR_INT_EN BIT(6) #define F_INT_CLR_BIT BIT(12) -#define REG_MMU_INT_MAIN_CONTROL 0x124 -#define F_INT_TRANSLATION_FAULT BIT(0) -#define F_INT_MAIN_MULTI_HIT_FAULT BIT(1) -#define F_INT_INVALID_PA_FAULT BIT(2) -#define F_INT_ENTRY_REPLACEMENT_FAULT BIT(3) -#define F_INT_TLB_MISS_FAULT BIT(4) -#define F_INT_MISS_TRANSACTION_FIFO_FAULT BIT(5) -#define F_INT_PRETETCH_TRANSATION_FIFO_FAULT BIT(6) +#define REG_MMU_INT_MAIN_CONTROL 0x124 /* mmu0 | mmu1 */ +#define F_INT_TRANSLATION_FAULT (BIT(0) | BIT(7)) +#define F_INT_MAIN_MULTI_HIT_FAULT (BIT(1) | BIT(8)) +#define F_INT_INVALID_PA_FAULT (BIT(2) | BIT(9)) +#define F_INT_ENTRY_REPLACEMENT_FAULT (BIT(3) | BIT(10)) +#define F_INT_TLB_MISS_FAULT (BIT(4) | BIT(11)) +#define F_INT_MISS_TRANSACTION_FIFO_FAULT (BIT(5) | BIT(12)) +#define F_INT_PRETETCH_TRANSATION_FIFO_FAULT (BIT(6) | BIT(13)) #define REG_MMU_CPE_DONE 0x12C #define REG_MMU_FAULT_ST1 0x134 +#define F_REG_MMU0_FAULT_MASK GENMASK(6, 0) +#define F_REG_MMU1_FAULT_MASK GENMASK(13, 7) -#define REG_MMU_FAULT_VA 0x13c +#define REG_MMU0_FAULT_VA 0x13c #define F_MMU_FAULT_VA_WRITE_BIT BIT(1) #define F_MMU_FAULT_VA_LAYER_BIT BIT(0) -#define REG_MMU_INVLD_PA 0x140 -#define REG_MMU_INT_ID 0x150 -#define F_MMU0_INT_ID_LARB_ID(a) (((a) >> 7) & 0x7) -#define F_MMU0_INT_ID_PORT_ID(a) (((a) >> 2) & 0x1f) +#define REG_MMU0_INVLD_PA 0x140 +#define REG_MMU1_FAULT_VA 0x144 +#define REG_MMU1_INVLD_PA 0x148 +#define REG_MMU0_INT_ID 0x150 +#define REG_MMU1_INT_ID 0x154 +#define F_MMU_INT_ID_LARB_ID(a) (((a) >> 7) & 0x7) +#define F_MMU_INT_ID_PORT_ID(a) (((a) >> 2) & 0x1f) #define MTK_PROTECT_PA_ALIGN 128 @@ -213,13 +218,19 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id) /* Read error info from registers */ int_state = readl_relaxed(data->base + REG_MMU_FAULT_ST1); - fault_iova = readl_relaxed(data->base + REG_MMU_FAULT_VA); + if (int_state & F_REG_MMU0_FAULT_MASK) { + regval = readl_relaxed(data->base + REG_MMU0_INT_ID); + fault_iova = readl_relaxed(data->base + REG_MMU0_FAULT_VA); + fault_pa = readl_relaxed(data->base + REG_MMU0_INVLD_PA); + } else { + regval = readl_relaxed(data->base + REG_MMU1_INT_ID); + fault_iova = readl_relaxed(data->base + REG_MMU1_FAULT_VA); + fault_pa = readl_relaxed(data->base + REG_MMU1_INVLD_PA); + } layer = fault_iova & F_MMU_FAULT_VA_LAYER_BIT; write = fault_iova & F_MMU_FAULT_VA_WRITE_BIT; - fault_pa = readl_relaxed(data->base + REG_MMU_INVLD_PA); - regval = readl_relaxed(data->base + REG_MMU_INT_ID); - fault_larb = F_MMU0_INT_ID_LARB_ID(regval); - fault_port = F_MMU0_INT_ID_PORT_ID(regval); + fault_larb = F_MMU_INT_ID_LARB_ID(regval); + fault_port = F_MMU_INT_ID_PORT_ID(regval); if (data->plat_data->larbid_remap_enable) fault_larb = data->plat_data->larbid_remapped[fault_larb];