From patchwork Fri Mar 15 07:26:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 2275111 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 00EE73FC8F for ; Fri, 15 Mar 2013 07:26:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752069Ab3COH0q (ORCPT ); Fri, 15 Mar 2013 03:26:46 -0400 Received: from e39.co.us.ibm.com ([32.97.110.160]:48241 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751724Ab3COH0j (ORCPT ); Fri, 15 Mar 2013 03:26:39 -0400 Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 15 Mar 2013 01:26:38 -0600 Received: from d01dlp02.pok.ibm.com (9.56.250.167) by e39.co.us.ibm.com (192.168.1.139) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Fri, 15 Mar 2013 01:26:37 -0600 Received: from d01relay06.pok.ibm.com (d01relay06.pok.ibm.com [9.56.227.116]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id 613486E8040 for ; Fri, 15 Mar 2013 03:26:34 -0400 (EDT) Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay06.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2F7QaaP29098024 for ; Fri, 15 Mar 2013 03:26:36 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r2F7QZXw019653 for ; Fri, 15 Mar 2013 03:26:36 -0400 Received: from shangw ([9.77.179.176]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r2F7QY1Z019597; Fri, 15 Mar 2013 03:26:35 -0400 Received: by shangw (Postfix, from userid 1000) id C44E4302252; Fri, 15 Mar 2013 15:26:32 +0800 (CST) From: Gavin Shan To: kvm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: alex.williamson@redhat.com, benh@kernel.crashing.org, aik@ozlabs.ru, Gavin Shan Subject: [PATCH 2/3] VFIO: VFIO_DEVICE_SET_ADDR_MAPPING command Date: Fri, 15 Mar 2013 15:26:29 +0800 Message-Id: <1363332390-12754-3-git-send-email-shangw@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1363332390-12754-1-git-send-email-shangw@linux.vnet.ibm.com> References: <1363332390-12754-1-git-send-email-shangw@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13031507-3620-0000-0000-000001A2F572 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The address (domain/bus/slot/function) of the passed PCI device looks quite different from perspective of host and guest. Some architectures like PPC need to setup the mapping in host. The patch introduces additional VFIO device IOCTL command to address that. Signed-off-by: Gavin Shan --- include/uapi/linux/vfio.h | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 6e58d9b..ecc4f38 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -289,6 +289,22 @@ struct vfio_irq_set { */ #define VFIO_DEVICE_RESET _IO(VFIO_TYPE, VFIO_BASE + 11) +/** + * VFIO_DEVICE_SET_ADDR_MAPPING - _IO(VFIO_TYPE, VFIO_BASE + 12) + * + * The address, which comprised of domain/bus/slot/function looks + * different between host and guest. We need to setup the mapping + * in host for some architectures like PPC so that the passed PCI + * devices could support RTAS smoothly. + */ +struct vfio_addr_mapping { + __u64 buid; + __u8 bus; + __u8 slot; + __u8 func; +}; +#define VFIO_DEVICE_SET_ADDR_MAPPING _IO(VFIO_TYPE, VFIO_BASE + 12) + /* * The VFIO-PCI bus driver makes use of the following fixed region and * IRQ index mapping. Unimplemented regions return a size of zero.