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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF571C4332F for ; Wed, 17 Nov 2021 21:15:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7E826139F for ; Wed, 17 Nov 2021 21:15:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231218AbhKQVSo (ORCPT ); Wed, 17 Nov 2021 16:18:44 -0500 Received: from new2-smtp.messagingengine.com ([66.111.4.224]:58419 "EHLO new2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232172AbhKQVSZ (ORCPT ); Wed, 17 Nov 2021 16:18:25 -0500 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id AEBA55806CC; Wed, 17 Nov 2021 16:15:25 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Wed, 17 Nov 2021 16:15:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=svenpeter.dev; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; s=fm3; bh=rDJmmzVKF8xgYuniWddaY4KG6e sEwkL+aJ6zJYHAFWM=; b=UJMItec/TlKbyg/Whl5WDkHIh9rMWnpzxMWgb2+J4n SlsxUz4WWwIF3wRG6RVkwOMrUmeffwyLrynIOcEgkzHouz1ITe4BzmttLM1xT0c3 OrxKrlNv25+4ynyGi2e5Sw+fko+9X8laH1TDFDcAMQGxzS5p+Ytf8I1aCskNt0B9 WqjvJhOuL8Mz1hWbYuDyZjTJU9p2VtC+60UXgweMQUNvwOk+mWWQ7U68dS0UwKtj 05T7DmSLoiw3y+zzQXMVdxD5nrxf91J1BGocD8p8rMsGOHxJJIpKuBcyzDUXi7ir 3TPTRjBFhqzKD1J71/XEkT6qAOQz9VJ6eVzdOzlUaowg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :message-id:mime-version:subject:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=rDJmmzVKF8xgYuniW ddaY4KG6esEwkL+aJ6zJYHAFWM=; b=V4ZRFYTOs8f8/cNkvBdYERMmRvrGypksj kxaBFJDI+i7k4aXbH3vzgaXZjVlgtkMUFN5uLDndjxnZU/HEKOZlxXE2EFegvIZN DDQO0CAdsKLItUlHY0b7hGHyOPf9mu1dn9hV0uQ/aSyDms2pZFLQDozBImwAbcZt 25r75XTtAlNZEP9nMD1ftMVBpNGk7odZ9Cf/BlrYCz1opxl27eZz+g/fevV9FPQf 4Oq2tyC9r5cDDie0CCgmkusHjr1cgtPjYDKOoAeq2OZqqeRPxT0ouwZxSHanUcjf 8mAgwLRLMo6fBKwkMVwlJVXu6KXTbWq5G6ttytbgz1ZqWyfwkhEHg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrfeeggddugedtucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffoggfgsedtkeertdertddtnecuhfhrohhmpefuvhgvnhcurfgv thgvrhcuoehsvhgvnhesshhvvghnphgvthgvrhdruggvvheqnecuggftrfgrthhtvghrnh epfeehudeftddvhfehvdduhedtjeejheeuudfftdfgvdekvdelleeuveelgfeflefgnecu ffhomhgrihhnpehkvghrnhgvlhdrohhrghenucevlhhushhtvghrufhiiigvpedtnecurf grrhgrmhepmhgrihhlfhhrohhmpehsvhgvnhesshhvvghnphgvthgvrhdruggvvh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 17 Nov 2021 16:15:22 -0500 (EST) From: Sven Peter To: iommu@lists.linux-foundation.org Cc: Sven Peter , Joerg Roedel , Will Deacon , Rob Herring , Janne Grunau , Hector Martin , Robin Murphy , Alyssa Rosenzweig , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/4] iommu: M1 Pro/Max DART support Date: Wed, 17 Nov 2021 22:15:05 +0100 Message-Id: <20211117211509.28066-1-sven@svenpeter.dev> X-Mailer: git-send-email 2.30.1 (Apple Git-130) MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This is a fairly brief series to add support for the DARTs present in the M1 Pro/Max. They have two differences that make them incompatible with those in the M1: - the physical addresses are shifted left by 4 bits and and have 2 more bits inside the PTE entries - the subpage protection feature is now mandatory. For Linux we can just configure it to always allow access to the entire page. Note that this needs a fix to the core pagetable code. Hector already sent a first version separately to the mailing list since the problem is (at least in theory) also present on other SoCs using the LPAE format with a large physical address space [1]. Sven [1] https://lore.kernel.org/linux-iommu/a2b45243-7e0a-a2ac-4e14-5256a3e7abb4@arm.com/T/#t Sven Peter (4): dt-bindings: iommu: dart: add t6000 compatible iommu/io-pgtable: Add DART subpage protection support iommu/io-pgtable: Add DART PTE support for t6000 iommu: dart: Support t6000 variant .../devicetree/bindings/iommu/apple,dart.yaml | 4 +- drivers/iommu/apple-dart.c | 19 ++++++++- drivers/iommu/io-pgtable-arm.c | 40 ++++++++++++++++++- include/linux/io-pgtable.h | 2 + 4 files changed, 61 insertions(+), 4 deletions(-) -- 2.25.1