From patchwork Fri Mar 20 16:58:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 11449907 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 79110913 for ; Fri, 20 Mar 2020 17:02:54 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4ECCF20786 for ; Fri, 20 Mar 2020 17:02:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="EhIXRR5e" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4ECCF20786 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:56302 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFL2r-0008KJ-DY for patchwork-qemu-devel@patchwork.kernel.org; Fri, 20 Mar 2020 13:02:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54160) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFL0C-000444-Ma for qemu-devel@nongnu.org; Fri, 20 Mar 2020 13:00:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jFL0B-0004iS-CS for qemu-devel@nongnu.org; Fri, 20 Mar 2020 13:00:08 -0400 Received: from us-smtp-delivery-74.mimecast.com ([216.205.24.74]:28736) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jFL0B-0004i5-92 for qemu-devel@nongnu.org; Fri, 20 Mar 2020 13:00:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1584723607; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ggBCH4KbYoRRY5++PE97RwvQs2b7za6HcsagnGf9BLc=; b=EhIXRR5e1B8XWQjl1O6ldCt//gb8b2O4w6T5c2rCejr8yF2HzkzftCGw3TUJE054T0o6zs s0BVheDdjTcQfaDq0jF1iKQ7A3AZyaB6piQrAy94IZP7GANfhWKJpNYvrL4uXX8lSMETWr MSShRYrqIusmrRlmtIRTT1CFq6S7AiE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-265-PXv0Bjr5MW2rX4EcPnsXfQ-1; Fri, 20 Mar 2020 13:00:03 -0400 X-MC-Unique: PXv0Bjr5MW2rX4EcPnsXfQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C4D3F108E441; Fri, 20 Mar 2020 17:00:00 +0000 (UTC) Received: from laptop.redhat.com (ovpn-113-142.ams2.redhat.com [10.36.113.142]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9131B16D22; Fri, 20 Mar 2020 16:59:48 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, mst@redhat.com, alex.williamson@redhat.com, jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com Subject: [RFC v6 05/24] memory: Introduce IOMMU Memory Region inject_faults API Date: Fri, 20 Mar 2020 17:58:21 +0100 Message-Id: <20200320165840.30057-6-eric.auger@redhat.com> In-Reply-To: <20200320165840.30057-1-eric.auger@redhat.com> References: <20200320165840.30057-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 216.205.24.74 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe@linaro.org, tnowicki@marvell.com, maz@kernel.org, zhangfei.gao@foxmail.com, peterx@redhat.com, shameerali.kolothum.thodi@huawei.com, zhangfei.gao@linaro.org, bbhushan2@marvell.com, will@kernel.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This new API allows to inject @count iommu_faults into the IOMMU memory region. Signed-off-by: Eric Auger --- include/exec/memory.h | 25 +++++++++++++++++++++++++ memory.c | 10 ++++++++++ 2 files changed, 35 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index f2c773163f..141a5dc197 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -57,6 +57,8 @@ struct MemoryRegionMmio { CPUWriteMemoryFunc *write[3]; }; +struct iommu_fault; + typedef struct IOMMUTLBEntry IOMMUTLBEntry; /* See address_space_translate: bit 0 is read, bit 1 is write. */ @@ -357,6 +359,19 @@ typedef struct IOMMUMemoryRegionClass { * @iommu: the IOMMUMemoryRegion */ int (*num_indexes)(IOMMUMemoryRegion *iommu); + + /* + * Inject @count faults into the IOMMU memory region + * + * Optional method: if this method is not provided, then + * memory_region_injection_faults() will return -ENOENT + * + * @iommu: the IOMMU memory region to inject the faults in + * @count: number of faults to inject + * @buf: fault buffer + */ + int (*inject_faults)(IOMMUMemoryRegion *iommu, int count, + struct iommu_fault *buf); } IOMMUMemoryRegionClass; typedef struct CoalescedMemoryRange CoalescedMemoryRange; @@ -1365,6 +1380,16 @@ int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr, */ int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr); +/** + * memory_region_inject_faults : inject @count faults stored in @buf + * + * @iommu_mr: the IOMMU memory region + * @count: number of faults to be injected + * @buf: buffer containing the faults + */ +int memory_region_inject_faults(IOMMUMemoryRegion *iommu_mr, int count, + struct iommu_fault *buf); + /** * memory_region_name: get a memory region's name * diff --git a/memory.c b/memory.c index 09be40edd2..9cdd77e0de 100644 --- a/memory.c +++ b/memory.c @@ -2001,6 +2001,16 @@ int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr) return imrc->num_indexes(iommu_mr); } +int memory_region_inject_faults(IOMMUMemoryRegion *iommu_mr, int count, + struct iommu_fault *buf) +{ + IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); + if (!imrc->inject_faults) { + return -ENOENT; + } + return imrc->inject_faults(iommu_mr, count, buf); +} + void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) { uint8_t mask = 1 << client;