Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754209Ab2E3UTE (ORCPT ); Wed, 30 May 2012 16:19:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:14018 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754121Ab2E3UTA (ORCPT ); Wed, 30 May 2012 16:19:00 -0400 From: Alex Williamson Subject: [PATCH v2 1/7] driver core: Add iommu_group tracking to struct device To: joerg.roedel@amd.com, dwmw2@infradead.org, iommu@lists.linux-foundation.org Cc: bhelgaas@google.com, benh@kernel.crashing.org, aik@ozlabs.ru, david@gibson.dropbear.id.au, konrad.wilk@oracle.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, gregkh@linuxfoundation.org, ddutile@redhat.com, alex.williamson@redhat.com, liuj97@gmail.com Date: Wed, 30 May 2012 14:18:41 -0600 Message-ID: <20120530201840.31527.47813.stgit@bling.home> In-Reply-To: <20120530201424.31527.33142.stgit@bling.home> References: <20120530201424.31527.33142.stgit@bling.home> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1275 Lines: 39 IOMMU groups allow IOMMU drivers to represent DMA visibility and isolation of devices. Multiple devices may be grouped together for the purposes of DMA. Placing a pointer on struct device enable easy access for things like streaming DMA programming and drivers like VFIO. Signed-off-by: Alex Williamson Acked-by: Greg Kroah-Hartman --- include/linux/device.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index 161d962..d0e4d99 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -36,6 +36,7 @@ struct subsys_private; struct bus_type; struct device_node; struct iommu_ops; +struct iommu_group; struct bus_attribute { struct attribute attr; @@ -687,6 +688,7 @@ struct device { const struct attribute_group **groups; /* optional groups */ void (*release)(struct device *dev); + struct iommu_group *iommu_group; }; /* Get the wakeup routines, which depend on struct device */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/