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Mon, 24 Apr 2023 04:21:58 -0700 (PDT) Received: from localhost.localdomain ([80.250.80.22]) by smtp.gmail.com with ESMTPSA id j1-20020a19f501000000b004eff0bcb276sm415542lfb.7.2023.04.24.04.21.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Apr 2023 04:21:58 -0700 (PDT) From: Viktor Prutyanov To: mst@redhat.com, jasowang@redhat.com, marcel.apfelbaum@gmail.com, pbonzini@redhat.com, peterx@redhat.com, david@redhat.com Cc: philmd@linaro.org, qemu-devel@nongnu.org, yan@daynix.com, yuri.benditovich@daynix.com, Viktor Prutyanov Subject: [RFC PATCH 2/4] virtio-pci: add handling of ATS state change Date: Mon, 24 Apr 2023 14:21:45 +0300 Message-Id: <20230424112147.17083-3-viktor@daynix.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20230424112147.17083-1-viktor@daynix.com> References: <20230424112147.17083-1-viktor@daynix.com> MIME-Version: 1.0 Received-SPF: none client-ip=2a00:1450:4864:20::136; envelope-from=viktor@daynix.com; helo=mail-lf1-x136.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Guest may enable or disable ATS for the device. Add logic for handling these events. Signed-off-by: Viktor Prutyanov --- hw/virtio/virtio-pci.c | 12 ++++++++++++ include/hw/virtio/virtio.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 247325c193..70f63a4986 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1731,6 +1731,17 @@ static void virtio_pci_device_write(void *opaque, hwaddr addr, } } +static void virtio_pci_ats_ctrl_trigger(PCIDevice *pci_dev, bool enable) +{ + VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + + vdev->ats_enabled = enable; + + if (vdev->ats_ctrl_trigger) + vdev->ats_ctrl_trigger(enable, vdev); +} + static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy, const char *vdev_name) { @@ -2166,6 +2177,7 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp) if (proxy->flags & VIRTIO_PCI_FLAG_ATS) { pcie_ats_init(pci_dev, last_pcie_cap_offset, proxy->flags & VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED); + pci_dev->ats_ctrl_trigger = virtio_pci_ats_ctrl_trigger; last_pcie_cap_offset += PCI_EXT_CAP_ATS_SIZEOF; } diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 77c6c55929..2812561aae 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -155,6 +155,8 @@ struct VirtIODevice QLIST_HEAD(, VirtQueue) *vector_queues; QTAILQ_ENTRY(VirtIODevice) next; EventNotifier config_notifier; + void (*ats_ctrl_trigger)(bool enable, VirtIODevice *vdev); + bool ats_enabled; }; struct VirtioDeviceClass {