From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 02D46C28CC1 for ; Sat, 1 Jun 2019 13:28:42 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 CD52D26C0A for ; Sat, 1 Jun 2019 13:28:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="hhJN/2yD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD52D26C0A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id D17F931D8; Sat, 1 Jun 2019 13:28:35 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id BA3D12B17 for ; Sat, 1 Jun 2019 13:27:00 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 65A4F8A4 for ; Sat, 1 Jun 2019 13:27:00 +0000 (UTC) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6B2D8273D1; Sat, 1 Jun 2019 13:26:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559395620; bh=WiKANmaMlD3Gbk6YfVehwxHNLtkVsP/TGQIBMtp9hHM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hhJN/2yDRlJ1qOdAIyyRp1YQk7JDG9NPoXJ3Ps9mTXNVww/WPDBulonK0HryJ9ff3 3sjdX3XRGy9wOA64lTrKlGbshb3iyGzEluPzS/xQexsjLZXl67tJvBch1bxdLRK0vH gzodJO7gnnFfCUUy6Yah8Csx6bJNmYXTl3fV7BlI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 34/56] iommu/tegra-smmu: Fix invalid ASID bits on Tegra30/114 Date: Sat, 1 Jun 2019 09:25:38 -0400 Message-Id: <20190601132600.27427-34-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190601132600.27427-1-sashal@kernel.org> References: <20190601132600.27427-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Cc: Sasha Levin , Joerg Roedel , iommu@lists.linux-foundation.org, linux-tegra@vger.kernel.org, Dmitry Osipenko , Thierry Reding X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org From: Dmitry Osipenko [ Upstream commit 43a0541e312f7136e081e6bf58f6c8a2e9672688 ] Both Tegra30 and Tegra114 have 4 ASID's and the corresponding bitfield of the TLB_FLUSH register differs from later Tegra generations that have 128 ASID's. In a result the PTE's are now flushed correctly from TLB and this fixes problems with graphics (randomly failing tests) on Tegra30. Cc: stable Signed-off-by: Dmitry Osipenko Acked-by: Thierry Reding Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/tegra-smmu.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 9305964250aca..c4eb293b15242 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -91,7 +91,6 @@ static inline u32 smmu_readl(struct tegra_smmu *smmu, unsigned long offset) #define SMMU_TLB_FLUSH_VA_MATCH_ALL (0 << 0) #define SMMU_TLB_FLUSH_VA_MATCH_SECTION (2 << 0) #define SMMU_TLB_FLUSH_VA_MATCH_GROUP (3 << 0) -#define SMMU_TLB_FLUSH_ASID(x) (((x) & 0x7f) << 24) #define SMMU_TLB_FLUSH_VA_SECTION(addr) ((((addr) & 0xffc00000) >> 12) | \ SMMU_TLB_FLUSH_VA_MATCH_SECTION) #define SMMU_TLB_FLUSH_VA_GROUP(addr) ((((addr) & 0xffffc000) >> 12) | \ @@ -194,8 +193,12 @@ static inline void smmu_flush_tlb_asid(struct tegra_smmu *smmu, { u32 value; - value = SMMU_TLB_FLUSH_ASID_MATCH | SMMU_TLB_FLUSH_ASID(asid) | - SMMU_TLB_FLUSH_VA_MATCH_ALL; + if (smmu->soc->num_asids == 4) + value = (asid & 0x3) << 29; + else + value = (asid & 0x7f) << 24; + + value |= SMMU_TLB_FLUSH_ASID_MATCH | SMMU_TLB_FLUSH_VA_MATCH_ALL; smmu_writel(smmu, value, SMMU_TLB_FLUSH); } @@ -205,8 +208,12 @@ static inline void smmu_flush_tlb_section(struct tegra_smmu *smmu, { u32 value; - value = SMMU_TLB_FLUSH_ASID_MATCH | SMMU_TLB_FLUSH_ASID(asid) | - SMMU_TLB_FLUSH_VA_SECTION(iova); + if (smmu->soc->num_asids == 4) + value = (asid & 0x3) << 29; + else + value = (asid & 0x7f) << 24; + + value |= SMMU_TLB_FLUSH_ASID_MATCH | SMMU_TLB_FLUSH_VA_SECTION(iova); smmu_writel(smmu, value, SMMU_TLB_FLUSH); } @@ -216,8 +223,12 @@ static inline void smmu_flush_tlb_group(struct tegra_smmu *smmu, { u32 value; - value = SMMU_TLB_FLUSH_ASID_MATCH | SMMU_TLB_FLUSH_ASID(asid) | - SMMU_TLB_FLUSH_VA_GROUP(iova); + if (smmu->soc->num_asids == 4) + value = (asid & 0x3) << 29; + else + value = (asid & 0x7f) << 24; + + value |= SMMU_TLB_FLUSH_ASID_MATCH | SMMU_TLB_FLUSH_VA_GROUP(iova); smmu_writel(smmu, value, SMMU_TLB_FLUSH); } -- 2.20.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu