From nobody Sun Feb 8 22:07:44 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1517857138906222.65861686805295; Mon, 5 Feb 2018 10:58:58 -0800 (PST) Received: from localhost ([::1]:51456 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eilyk-0002BC-40 for importer@patchew.org; Mon, 05 Feb 2018 13:58:58 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35374) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eilwm-0000vt-28 for qemu-devel@nongnu.org; Mon, 05 Feb 2018 13:56:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eilwk-0003gs-QT for qemu-devel@nongnu.org; Mon, 05 Feb 2018 13:56:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:54074) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eilwk-0003gT-Hw for qemu-devel@nongnu.org; Mon, 05 Feb 2018 13:56:54 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BD86780484 for ; Mon, 5 Feb 2018 18:56:53 +0000 (UTC) Received: from gimli.home (ovpn-117-203.phx2.redhat.com [10.3.117.203]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8F5AB60C82; Mon, 5 Feb 2018 18:56:53 +0000 (UTC) From: Alex Williamson To: qemu-devel@nongnu.org Date: Mon, 05 Feb 2018 11:56:53 -0700 Message-ID: <20180205185653.14391.26587.stgit@gimli.home> In-Reply-To: <20180205185416.14391.5739.stgit@gimli.home> References: <20180205185416.14391.5739.stgit@gimli.home> User-Agent: StGit/0.18-101-g8fa6 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Mon, 05 Feb 2018 18:56:53 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 01/11] memory/iommu: Add get_attr() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 From: Alexey Kardashevskiy This adds get_attr() to IOMMUMemoryRegionClass, like iommu_ops::domain_get_attr in the Linux kernel. This defines the first attribute - IOMMU_ATTR_SPAPR_TCE_FD - which will be used between the pSeries machine and VFIO-PCI. Signed-off-by: Alexey Kardashevskiy Acked-by: Paolo Bonzini Acked-by: David Gibson Signed-off-by: Alex Williamson --- include/exec/memory.h | 22 ++++++++++++++++++++++ memory.c | 13 +++++++++++++ 2 files changed, 35 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 07c5d6d59796..3ef83991e99a 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -190,6 +190,10 @@ struct MemoryRegionOps { const MemoryRegionMmio old_mmio; }; =20 +enum IOMMUMemoryRegionAttr { + IOMMU_ATTR_SPAPR_TCE_FD +}; + typedef struct IOMMUMemoryRegionClass { /* private */ struct DeviceClass parent_class; @@ -210,6 +214,10 @@ typedef struct IOMMUMemoryRegionClass { IOMMUNotifierFlag new_flags); /* Set this up to provide customized IOMMU replay function */ void (*replay)(IOMMUMemoryRegion *iommu, IOMMUNotifier *notifier); + + /* Get IOMMU misc attributes */ + int (*get_attr)(IOMMUMemoryRegion *iommu, enum IOMMUMemoryRegionAttr, + void *data); } IOMMUMemoryRegionClass; =20 typedef struct CoalescedMemoryRange CoalescedMemoryRange; @@ -926,6 +934,20 @@ void memory_region_iommu_replay_all(IOMMUMemoryRegion = *iommu_mr); void memory_region_unregister_iommu_notifier(MemoryRegion *mr, IOMMUNotifier *n); =20 +/** + * memory_region_iommu_get_attr: return an IOMMU attr if get_attr() is + * defined on the IOMMU. + * + * Returns 0 if succeded, error code otherwise. + * + * @iommu_mr: the memory region + * @attr: the requested attribute + * @data: a pointer to the requested attribute data + */ +int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr, + enum IOMMUMemoryRegionAttr attr, + void *data); + /** * memory_region_name: get a memory region's name * diff --git a/memory.c b/memory.c index 449a1429b946..a4c603730a8c 100644 --- a/memory.c +++ b/memory.c @@ -1922,6 +1922,19 @@ void memory_region_notify_iommu(IOMMUMemoryRegion *i= ommu_mr, } } =20 +int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr, + enum IOMMUMemoryRegionAttr attr, + void *data) +{ + IOMMUMemoryRegionClass *imrc =3D IOMMU_MEMORY_REGION_GET_CLASS(iommu_m= r); + + if (!imrc->get_attr) { + return -EINVAL; + } + + return imrc->get_attr(iommu_mr, attr, data); +} + void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) { uint8_t mask =3D 1 << client;