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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 CB689C3A5A0 for ; Mon, 19 Aug 2019 18:20:00 +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 A6F6022CEC for ; Mon, 19 Aug 2019 18:20:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A6F6022CEC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com 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 A8DD2EC0; Mon, 19 Aug 2019 18:19:44 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 5ED01EBD for ; Mon, 19 Aug 2019 18:19:41 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 3C76F8A0 for ; Mon, 19 Aug 2019 18:19:37 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D87F71576; Mon, 19 Aug 2019 11:19:36 -0700 (PDT) Received: from e110467-lin.cambridge.arm.com (e110467-lin.cambridge.arm.com [10.1.197.57]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F16C63F246; Mon, 19 Aug 2019 11:19:35 -0700 (PDT) From: Robin Murphy To: will@kernel.org Subject: [PATCH 1/4] iommu/io-pgtable-arm: Rationalise MAIR handling Date: Mon, 19 Aug 2019 19:19:28 +0100 Message-Id: <2aada213eb24e56a1ac74e6e2b0b9e99f664edd1.1566238530.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: References: MIME-Version: 1.0 Cc: iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org 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 Between VMSAv8-64 and the various 32-bit formats, there is either one 64-bit MAIR or a pair of 32-bit MAIR0/MAIR1 or NMRR/PMRR registers. As such, keeping two 64-bit values in io_pgtable_cfg has always been overkill. Signed-off-by: Robin Murphy --- drivers/iommu/arm-smmu-v3.c | 2 +- drivers/iommu/arm-smmu.c | 4 ++-- drivers/iommu/io-pgtable-arm.c | 5 ++--- drivers/iommu/ipmmu-vmsa.c | 2 +- drivers/iommu/qcom_iommu.c | 4 ++-- include/linux/io-pgtable.h | 2 +- 6 files changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index a9a9fabd3968..2a8db896d698 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1724,7 +1724,7 @@ static int arm_smmu_domain_finalise_s1(struct arm_smmu_domain *smmu_domain, cfg->cd.asid = (u16)asid; cfg->cd.ttbr = pgtbl_cfg->arm_lpae_s1_cfg.ttbr[0]; cfg->cd.tcr = pgtbl_cfg->arm_lpae_s1_cfg.tcr; - cfg->cd.mair = pgtbl_cfg->arm_lpae_s1_cfg.mair[0]; + cfg->cd.mair = pgtbl_cfg->arm_lpae_s1_cfg.mair; return 0; out_free_asid: diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 523a88842e7f..184ca41e9de7 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -491,8 +491,8 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain, cb->mair[0] = pgtbl_cfg->arm_v7s_cfg.prrr; cb->mair[1] = pgtbl_cfg->arm_v7s_cfg.nmrr; } else { - cb->mair[0] = pgtbl_cfg->arm_lpae_s1_cfg.mair[0]; - cb->mair[1] = pgtbl_cfg->arm_lpae_s1_cfg.mair[1]; + cb->mair[0] = pgtbl_cfg->arm_lpae_s1_cfg.mair; + cb->mair[1] = pgtbl_cfg->arm_lpae_s1_cfg.mair >> 32; } } } diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index 161a7d56264d..c588ba0dd4d1 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -859,8 +859,7 @@ arm_64_lpae_alloc_pgtable_s1(struct io_pgtable_cfg *cfg, void *cookie) (ARM_LPAE_MAIR_ATTR_INC_OWBRWA << ARM_LPAE_MAIR_ATTR_SHIFT(ARM_LPAE_MAIR_ATTR_IDX_INC_OCACHE)); - cfg->arm_lpae_s1_cfg.mair[0] = reg; - cfg->arm_lpae_s1_cfg.mair[1] = 0; + cfg->arm_lpae_s1_cfg.mair = reg; /* Looking good; allocate a pgd */ data->pgd = __arm_lpae_alloc_pages(data->pgd_size, GFP_KERNEL, cfg); @@ -1024,7 +1023,7 @@ arm_mali_lpae_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie) u64 mair, ttbr; /* Copy values as union fields overlap */ - mair = cfg->arm_lpae_s1_cfg.mair[0]; + mair = cfg->arm_lpae_s1_cfg.mair; ttbr = cfg->arm_lpae_s1_cfg.ttbr[0]; cfg->arm_mali_lpae_cfg.memattr = mair; diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index ad0098c0c87c..9075e53a748b 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -436,7 +436,7 @@ static void ipmmu_domain_setup_context(struct ipmmu_vmsa_domain *domain) /* MAIR0 */ ipmmu_ctx_write_root(domain, IMMAIR0, - domain->cfg.arm_lpae_s1_cfg.mair[0]); + domain->cfg.arm_lpae_s1_cfg.mair); /* IMBUSCR */ if (domain->mmu->features->setup_imbuscr) diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index a2062d13584f..34bb357b3cfa 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -262,9 +262,9 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain, /* MAIRs (stage-1 only) */ iommu_writel(ctx, ARM_SMMU_CB_S1_MAIR0, - pgtbl_cfg.arm_lpae_s1_cfg.mair[0]); + pgtbl_cfg.arm_lpae_s1_cfg.mair); iommu_writel(ctx, ARM_SMMU_CB_S1_MAIR1, - pgtbl_cfg.arm_lpae_s1_cfg.mair[1]); + pgtbl_cfg.arm_lpae_s1_cfg.mair >> 32); /* SCTLR */ reg = SCTLR_CFIE | SCTLR_CFRE | SCTLR_AFE | SCTLR_TRE | diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h index b5a450a3bb47..a6c8aa204733 100644 --- a/include/linux/io-pgtable.h +++ b/include/linux/io-pgtable.h @@ -92,7 +92,7 @@ struct io_pgtable_cfg { struct { u64 ttbr[2]; u64 tcr; - u64 mair[2]; + u64 mair; } arm_lpae_s1_cfg; struct { -- 2.21.0.dirty _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu