From patchwork Thu Jan 18 11:52:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffy Chen X-Patchwork-Id: 10173011 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 05BFB602DC for ; Thu, 18 Jan 2018 11:55:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E928726CFF for ; Thu, 18 Jan 2018 11:55:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDA5A26E38; Thu, 18 Jan 2018 11:55:29 +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=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 609E526E3A for ; Thu, 18 Jan 2018 11:55:29 +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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=NCdJja8+cThJ6/sNm19cOTcB3j4xZXO8BSKGDugyvcA=; b=WRfDDiE8yB1p3wIILmyTQ1TlNd 2a/qaI7QElG14LhHqR3dBVZscM8Tpw+USSc38J2mMQ+En2DIzwnum7JiKFAMGzkF1ApyNY8Oaol0H bR0HvJBAVyc7eeR+a829cYGlv6j3gyV8afQpaorkDjMpfMDyqQmfNtKM1cNAVU2BUdfKGhPODbyJE TFNc1SMt9WTJbcqL4yk0QPcL+yyqZnH5+cC89kUoTFNAWYioFzPDcZu24+xmt0GiBF62WeylGdaed o7OYjogynoZ/m4KE0iHKmEbzUhm282QybDM1MC3M5fMBraDhZeHO+GYBLMtT8OT3KsGMYSi8Wk5EB ATs0SBZw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1ec8n1-0002M8-3g; Thu, 18 Jan 2018 11:55:27 +0000 Received: from regular1.263xmail.com ([211.150.99.133]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1ec8lp-00084Y-7Y; Thu, 18 Jan 2018 11:54:39 +0000 Received: from jeffy.chen?rock-chips.com (unknown [192.168.167.227]) by regular1.263xmail.com (Postfix) with ESMTP id C85268F82; Thu, 18 Jan 2018 19:53:56 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTPA id AAA5F308; Thu, 18 Jan 2018 19:53:51 +0800 (CST) X-RL-SENDER: jeffy.chen@rock-chips.com X-FST-TO: linux-kernel@vger.kernel.org X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: jeffy.chen@rock-chips.com X-UNIQUE-TAG: <577bb58eba0667da7c9bb2c2fd8ebab0> X-ATTACHMENT-NUM: 0 X-SENDER: cjf@rock-chips.com X-DNS-TYPE: 0 Received: from localhost (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 4763FPKJJI; Thu, 18 Jan 2018 19:53:58 +0800 (CST) From: Jeffy Chen To: linux-kernel@vger.kernel.org Subject: [PATCH v4 06/13] iommu/rockchip: Fix TLB flush of secondary IOMMUs Date: Thu, 18 Jan 2018 19:52:44 +0800 Message-Id: <20180118115251.5542-7-jeffy.chen@rock-chips.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180118115251.5542-1-jeffy.chen@rock-chips.com> References: <20180118115251.5542-1-jeffy.chen@rock-chips.com> X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xxm@rock-chips.com, Joerg Roedel , Jeffy Chen , tfiga@chromium.org, jcliang@chromium.org, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, Heiko Stuebner MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Tomasz Figa Due to the bug in current code, only first IOMMU has the TLB lines flushed in rk_iommu_zap_lines. This patch fixes the inner loop to execute for all IOMMUs and properly flush the TLB. Signed-off-by: Tomasz Figa Signed-off-by: Jeffy Chen --- Changes in v4: None Changes in v3: None Changes in v2: None drivers/iommu/rockchip-iommu.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 4a1c710408af..1914ac52042c 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -272,19 +272,21 @@ static void rk_iommu_base_command(void __iomem *base, u32 command) { writel(command, base + RK_MMU_COMMAND); } -static void rk_iommu_zap_lines(struct rk_iommu *iommu, dma_addr_t iova, +static void rk_iommu_zap_lines(struct rk_iommu *iommu, dma_addr_t iova_start, size_t size) { int i; - - dma_addr_t iova_end = iova + size; + dma_addr_t iova_end = iova_start + size; /* * TODO(djkurtz): Figure out when it is more efficient to shootdown the * entire iotlb rather than iterate over individual iovas. */ - for (i = 0; i < iommu->num_mmu; i++) - for (; iova < iova_end; iova += SPAGE_SIZE) + for (i = 0; i < iommu->num_mmu; i++) { + dma_addr_t iova; + + for (iova = iova_start; iova < iova_end; iova += SPAGE_SIZE) rk_iommu_write(iommu->bases[i], RK_MMU_ZAP_ONE_LINE, iova); + } } static bool rk_iommu_is_stall_active(struct rk_iommu *iommu)