From patchwork Sun Apr 14 19:12:01 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Varun Sethi X-Patchwork-Id: 236460 X-Patchwork-Delegate: galak@kernel.crashing.org Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id BBDFB2C01CD for ; Mon, 15 Apr 2013 05:21:45 +1000 (EST) Received: from va3outboundpool.messaging.microsoft.com (va3ehsobe005.messaging.microsoft.com [216.32.180.31]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id F17352C0103 for ; Mon, 15 Apr 2013 05:20:40 +1000 (EST) Received: from mail125-va3-R.bigfish.com (10.7.14.241) by VA3EHSOBE014.bigfish.com (10.7.40.64) with Microsoft SMTP Server id 14.1.225.23; Sun, 14 Apr 2013 19:20:36 +0000 Received: from mail125-va3 (localhost [127.0.0.1]) by mail125-va3-R.bigfish.com (Postfix) with ESMTP id 4BD59180303; Sun, 14 Apr 2013 19:20:36 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h1fc6h1ee6h1de0h1fdah1202h1e76h1d1ah1d2ahzz8275bhz2dh2a8h668h839he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1155h) Received: from mail125-va3 (localhost.localdomain [127.0.0.1]) by mail125-va3 (MessageSwitch) id 1365967233859216_27641; Sun, 14 Apr 2013 19:20:33 +0000 (UTC) Received: from VA3EHSMHS028.bigfish.com (unknown [10.7.14.237]) by mail125-va3.bigfish.com (Postfix) with ESMTP id CDE1E4A0046; Sun, 14 Apr 2013 19:20:33 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS028.bigfish.com (10.7.99.38) with Microsoft SMTP Server (TLS) id 14.1.225.23; Sun, 14 Apr 2013 19:20:33 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-002.039d.mgd.msft.net (10.84.1.15) with Microsoft SMTP Server (TLS) id 14.2.328.11; Sun, 14 Apr 2013 19:20:33 +0000 Received: from nmglablinux27.zin33.ap.freescale.net (nmglablinux28.zin33.ap.freescale.net [10.232.20.211]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id r3EJKHBP022907; Sun, 14 Apr 2013 12:20:29 -0700 From: Varun Sethi To: , , , , , , , Subject: [PATCH 2/3 v12] iommu/fsl: Add additional iommu attributes required by the PAMU driver. Date: Mon, 15 Apr 2013 00:42:01 +0530 Message-ID: <1365966722-1804-2-git-send-email-Varun.Sethi@freescale.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1365966722-1804-1-git-send-email-Varun.Sethi@freescale.com> References: <1365966722-1804-1-git-send-email-Varun.Sethi@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com Cc: Varun Sethi X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Added the following domain attributes for the FSL PAMU driver: 1. Added new iommu stash attribute, which allows setting of the LIODN specific stash id parameter through IOMMU API. 2. Added an attribute for enabling/disabling DMA to a particular memory window. 3. Added domain attribute to check for PAMUV1 specific constraints. Signed-off-by: Varun Sethi --- -v12 changes: - Moved PAMU specifc stash ids and structures to PAMU header file. - no change in v11. - no change in v10. include/linux/iommu.h | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 2727810..c5dc2b9 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -57,10 +57,26 @@ struct iommu_domain { #define IOMMU_CAP_CACHE_COHERENCY 0x1 #define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */ +/* + * Following constraints are specifc to PAMUV1: + * -aperture must be power of 2, and naturally aligned + * -number of windows must be power of 2, and address space size + * of each window is determined by aperture size / # of windows + * -the actual size of the mapped region of a window must be power + * of 2 starting with 4KB and physical address must be naturally + * aligned. + * DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints. + * The caller can invoke iommu_domain_get_attr to check if the underlying + * iommu implementation supports these constraints. + */ + enum iommu_attr { DOMAIN_ATTR_GEOMETRY, DOMAIN_ATTR_PAGING, DOMAIN_ATTR_WINDOWS, + DOMAIN_ATTR_PAMU_STASH, + DOMAIN_ATTR_PAMU_ENABLE, + DOMAIN_ATTR_FSL_PAMUV1, DOMAIN_ATTR_MAX, };