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=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,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 35F06C433E6 for ; Tue, 2 Feb 2021 07:35:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA49764ECB for ; Tue, 2 Feb 2021 07:35:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231630AbhBBHfN (ORCPT ); Tue, 2 Feb 2021 02:35:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231419AbhBBHfK (ORCPT ); Tue, 2 Feb 2021 02:35:10 -0500 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 345CAC061573; Mon, 1 Feb 2021 23:34:30 -0800 (PST) Received: by mail-pj1-x102f.google.com with SMTP id gx20so1826549pjb.1; Mon, 01 Feb 2021 23:34:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ompRf8cfDRH36F3caoFFYG+tYZCSg50YdpkIE/hyJMw=; b=Zy5ftunn/tYYdnM+XyFaEA+A377YXR8PS1iLHZH6WHb0yYO4I0Gb6BYTQhcSP25m2r 8m3TP94MfEV/40+M+S7HQcYlXswNIovQo5uvDlPMFhwyt1sCDQrVKZA2wRdNtzznpfFu wvvKmJJ0WOgz1MKBFH3145anoQyDMcExERONt5cdXrkkT2ct5rGhxnCyQybGOqT8hiNW BQweVybRGrw6s4STZUnnlPAhjdXzV+1vXhyb7fxPwuBwB627tPvdURDTR3y6Oubsfq4M 2ZpQSGaQeXhtFCrzzAcyGpeWj+ypkmS3daTd+u5ohrPaUW5RMvdYE/HvL7FkBCviI5UO xYpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ompRf8cfDRH36F3caoFFYG+tYZCSg50YdpkIE/hyJMw=; b=jXF72PeR65I0iTkyBx7Q1hkd2iRRJUByP2GWygoeUmUYSiMRp4qL11+2tkYNoFMk+c bBeeTttdekb31saKaVZbHlTM0V2CBlAeQ4XAa1shoGIq2brL3bFDXTCd81R0Kj4ffSNH 0WfUhHkRG+wPPLnIp6N7Y2ItdRALTXrwBf8MJiywpWf7upj4DvdZM4Ro8UUFPrVEtufq hQCZF5KSC4sRiumMu9wDmIpIvXkJM2xCMjJ3CVhX5oExpkHt0k+tYybCMx6HmHzY69zG Ly0+BuMZKYKL+ykrzWZC36Wm8zSWGiaS7EW8d5PEhfkczNKmyV8I9mkBXPy3erTLb/gl u6mA== X-Gm-Message-State: AOAM530xbpBHv0XaKY86djUXLq+IXS1VFuLSuYEcPC0zWVoZwgzn0jmS 2PZUB+O09TTqbeL+KI8lWoq3kJuB+NABmAxi X-Google-Smtp-Source: ABdhPJxubgvThdN3w0Do+rIfD5d52IfjQerNh2trcyjPIFIHaTiJs4qwGq8mCgL1ei0RSs7Y8awBNg== X-Received: by 2002:a17:90a:1a0b:: with SMTP id 11mr2922498pjk.58.1612251269773; Mon, 01 Feb 2021 23:34:29 -0800 (PST) Received: from ubt.spreadtrum.com ([117.18.48.82]) by smtp.gmail.com with ESMTPSA id o4sm1752029pjs.57.2021.02.01.23.34.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Feb 2021 23:34:29 -0800 (PST) From: Chunyan Zhang To: Robin Murphy , Rob Herring , Joerg Roedel Cc: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, Baolin Wang , linux-kernel@vger.kernel.org, Orson Zhai , Chunyan Zhang , Sheng Xu , Chunyan Zhang Subject: [PATCH v2 0/2] Add Unisoc iommu basic driver Date: Tue, 2 Feb 2021 15:32:56 +0800 Message-Id: <20210202073258.559443-1-zhang.lyra@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chunyan Zhang Changes since v1: * Fixed compile errors reported by kernel test robot . * Changed to use syscon to get mapped registers for iommu and media devices to avoid double map issue. * Addressed Robin's comments: - Added including offset in the returned physical address if the input virtual address isn't page-aligned; - Added platform_device_put() after calling of_find_device_by_node(); - Removed iommu register offset from driver, it will be defined as the cell of DT reference to syscon phandle; - Removed multi compatible strings which are not needed; - Added comments for the function sprd_iommu_clk_enable(); - Added clocks property in bindings; - Set device_driver.suppress_bind_attrs to disable unbind the devices via sysfs; - A few trivial fixes. Changes since RFC v2: * Addressed Robin's comments: - Add COMPILE_TEST support; - Use DMA allocator for PTE; - Revised to avoid resource leak issue; - Added ->iotlb_sync implemented; - Moved iommu group allocation to probe; - Changed some function names to make them sprd specific; * Added support for more iommu instance; Changes since RFC v1: * Rebased on v5.11-rc1; * Changed sprd-iommu to tristate; * Removed check for args_count of iommu OF node, since there's no args for sprd-iommu device node; * Added another IP version (i.e. vau); * Removed unnecessary configs selection from CONFIG_SPRD_IOMMU; * Changed to get zeroed pages. Chunyan Zhang (2): dt-bindings: iommu: add bindings for sprd iommu iommu: add Unisoc iommu basic driver .../devicetree/bindings/iommu/sprd,iommu.yaml | 72 +++ drivers/iommu/Kconfig | 12 + drivers/iommu/Makefile | 1 + drivers/iommu/sprd-iommu.c | 581 ++++++++++++++++++ 4 files changed, 666 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/sprd,iommu.yaml create mode 100644 drivers/iommu/sprd-iommu.c -- 2.25.1