From patchwork Mon Nov 16 18:13:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1401103 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=JrPVXBn7; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4CZdLl5HrMz9sRK for ; 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auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/16 04:46:27 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: peter.maydell@linaro.org, jacob.jun.pan@linux.intel.com, jean-philippe@linaro.org, tn@semihalf.com, shameerali.kolothum.thodi@huawei.com, nicoleotsuka@gmail.com, vivek.gautam@arm.com, yi.l.liu@intel.com, peterx@redhat.com, zhangfei.gao@gmail.com, yuzenghui@huawei.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add a new PCI operation that allows to return page responses to registered VFIO devices Signed-off-by: Eric Auger --- include/hw/iommu/iommu.h | 8 ++++++++ include/hw/pci/pci.h | 4 ++++ hw/pci/pci.c | 16 ++++++++++++++++ 3 files changed, 28 insertions(+) diff --git a/include/hw/iommu/iommu.h b/include/hw/iommu/iommu.h index 12092bda7b..5890f095b1 100644 --- a/include/hw/iommu/iommu.h +++ b/include/hw/iommu/iommu.h @@ -24,5 +24,13 @@ typedef struct IOMMUConfig { }; } IOMMUConfig; +typedef struct IOMMUPageResponse { + union { +#ifdef __linux__ + struct iommu_page_response resp; +#endif + }; +} IOMMUPageResponse; + #endif /* QEMU_HW_IOMMU_IOMMU_H */ diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 833b330ee1..c4baadf77e 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -267,6 +267,8 @@ typedef struct PCIReqIDCache PCIReqIDCache; struct PCIPASIDOps { int (*set_pasid_table)(PCIBus *bus, int32_t devfn, IOMMUConfig *config); + int (*return_page_response)(PCIBus *bus, int32_t devfn, + IOMMUPageResponse *resp); }; typedef struct PCIPASIDOps PCIPASIDOps; @@ -498,6 +500,8 @@ void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque); void pci_setup_pasid_ops(PCIDevice *dev, PCIPASIDOps *ops); bool pci_device_is_pasid_ops_set(PCIBus *bus, int32_t devfn); int pci_device_set_pasid_table(PCIBus *bus, int32_t devfn, IOMMUConfig *config); +int pci_device_return_page_response(PCIBus *bus, int32_t devfn, + IOMMUPageResponse *resp); static inline void pci_set_byte(uint8_t *config, uint8_t val) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 4e21feb758..5dd207bc22 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2759,6 +2759,22 @@ int pci_device_set_pasid_table(PCIBus *bus, int32_t devfn, return -ENOENT; } +int pci_device_return_page_response(PCIBus *bus, int32_t devfn, + IOMMUPageResponse *resp) +{ + PCIDevice *dev; + + if (!bus) { + return -EINVAL; + } + + dev = bus->devices[devfn]; + if (dev && dev->pasid_ops && dev->pasid_ops->return_page_response) { + return dev->pasid_ops->return_page_response(bus, devfn, resp); + } + return -ENOENT; +} + static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque) { Range *range = opaque;