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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9EABCCA483 for ; Sun, 10 Jul 2022 23:06:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229560AbiGJXGQ (ORCPT ); Sun, 10 Jul 2022 19:06:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60788 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229543AbiGJXGI (ORCPT ); Sun, 10 Jul 2022 19:06:08 -0400 Received: from mail-wm1-x32d.google.com (mail-wm1-x32d.google.com [IPv6:2a00:1450:4864:20::32d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 490E610FC0 for ; Sun, 10 Jul 2022 16:06:07 -0700 (PDT) Received: by mail-wm1-x32d.google.com with SMTP id d13-20020a05600c34cd00b003a2dc1cf0b4so2089658wmq.4 for ; Sun, 10 Jul 2022 16:06:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=t3ZTmvONYAL3UmGbG2MULEJQEOXDk4bgL9Jsh2UKHR0=; b=shjCmOtmTJr3WRbag5oJo/fGtuTm1xqY1Edpx4CJaaiZU343eW60a+82utSz3xgQ6p aWRh/+ep3FFT5CK/PAucz0i721CP1Tv8cjbvbTE+AhRlyVXwHm1otNklh+FMTNdiFjGu 55b4myBFjVznKA/z4iJAZwDdSIxXuSi6gp/LWCCvEsbgcxfUZ4MfqtLHHpblqvIri1yB 4RSYvjtpzs5XMxP29a/xlpF8IaGDvpGJYFFUEVEiNzzzu5RYpUG3VKKrJ5x5b4C4v8W/ VUvCmv7rG2tPfBge19Ypz0vXdpnvffjH4V94S0rjZ2GonwrfU21td/QHNbZRnyGdBDo1 n0nQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=t3ZTmvONYAL3UmGbG2MULEJQEOXDk4bgL9Jsh2UKHR0=; b=gFa1HFli23KGN2oioC6vuDNyVxIkrfyw5tKfv57ZLBdjJojat1n1sLzIFii8tW+998 TuzRqFnpUEVvyX8Lvswx2BKLj7t4T5zFkwx4X+jCG05oZRSH/M94r2CKRtR3Bf7zbV91 we9/lGKCENFCCCR5vh2W2vk5RjMqk/YNAz9jGmMIF4V85p1QqV2kYzp8O4Qu9/BQ8B3B pmWVQLsOMCz4dwekbm+HbZNj9KzVHM8FY39EcQL+y/Eaz12bLv1Ad7SvOQ7H6iag34dm l8ERNaVhmZyvrY9MqUaUq0FgBlynNCJXHtuWTL56QYpJlj0sJtAVLe3FuCtsj6CSaMx3 V+xA== X-Gm-Message-State: AJIora8f4Mj6B0/exR5wBsxDiLo5lnaQ4eh+ZVYUdmeg/2uXw3YXeSKC W2NT+C9S983kApvVGMRhIXbhCw== X-Google-Smtp-Source: AGRyM1u43KlHkERt90c0V0mKxMDOvNBrf0leawFGzCy7FxHSo4Rkj7KffUTXFcFXeKS8Uks57TmrnA== X-Received: by 2002:a05:600c:6024:b0:3a0:4ea4:cfa4 with SMTP id az36-20020a05600c602400b003a04ea4cfa4mr12564968wmb.119.1657494365850; Sun, 10 Jul 2022 16:06:05 -0700 (PDT) Received: from localhost ([31.134.121.151]) by smtp.gmail.com with ESMTPSA id n4-20020a5d6604000000b0021d650e4df4sm4436047wru.87.2022.07.10.16.06.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 Jul 2022 16:06:05 -0700 (PDT) From: Sam Protsenko To: Marek Szyprowski , Krzysztof Kozlowski Cc: Joerg Roedel , Will Deacon , Robin Murphy , Janghyuck Kim , Cho KyongHo , Daniel Mentz , David Virag , Sumit Semwal , iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/7] iommu/exynos: Reuse SysMMU constants for page size and order Date: Mon, 11 Jul 2022 02:05:57 +0300 Message-Id: <20220710230603.13526-2-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220710230603.13526-1-semen.protsenko@linaro.org> References: <20220710230603.13526-1-semen.protsenko@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Using SZ_4K in context of SysMMU driver is better than using PAGE_SIZE, as PAGE_SIZE might have different value on different platforms. Though it would be even better to use more specific constants, already existing in SysMMU driver. Make the code more strict by using SPAGE_ORDER and SPAGE_SIZE constants. It also makes sense, as __sysmmu_tlb_invalidate_entry() also uses SPAGE_* constants for further calculations with num_inv param, so it's logical that num_inv should be previously calculated using also SPAGE_* values. Signed-off-by: Sam Protsenko --- Changes in v2: - (none) This patch is new and added in v2 drivers/iommu/exynos-iommu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 79729892eb48..8f80aaa35092 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -340,7 +340,7 @@ static void __sysmmu_set_ptbase(struct sysmmu_drvdata *data, phys_addr_t pgd) if (MMU_MAJ_VER(data->version) < 5) writel(pgd, data->sfrbase + REG_PT_BASE_ADDR); else - writel(pgd / SZ_4K, data->sfrbase + REG_V5_PT_BASE_PFN); + writel(pgd >> SPAGE_ORDER, data->sfrbase + REG_V5_PT_BASE_PFN); __sysmmu_tlb_invalidate(data); } @@ -550,7 +550,7 @@ static void sysmmu_tlb_invalidate_entry(struct sysmmu_drvdata *data, * 64KB page can be one of 16 consecutive sets. */ if (MMU_MAJ_VER(data->version) == 2) - num_inv = min_t(unsigned int, size / SZ_4K, 64); + num_inv = min_t(unsigned int, size / SPAGE_SIZE, 64); if (sysmmu_block(data)) { __sysmmu_tlb_invalidate_entry(data, iova, num_inv); -- 2.30.2