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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=141.146.126.78; envelope-from=elena.ufimtseva@oracle.com; helo=aserp2120.oracle.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/05 14:51:29 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.733, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham 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: elena.ufimtseva@oracle.com, fam@euphon.net, swapnil.ingle@nutanix.com, john.g.johnson@oracle.com, kraxel@redhat.com, jag.raman@oracle.com, quintela@redhat.com, mst@redhat.com, armbru@redhat.com, kanth.ghatraju@oracle.com, felipe@nutanix.com, thuth@redhat.com, ehabkost@redhat.com, konrad.wilk@oracle.com, dgilbert@redhat.com, stefanha@redhat.com, thanos.makatos@nutanix.com, rth@twiddle.net, kwolf@redhat.com, berrange@redhat.com, mreitz@redhat.com, ross.lagerwall@citrix.com, marcandre.lureau@gmail.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Jagannathan Raman Retrieve PCI configuration info about the remote device and configure the Proxy PCI object based on the returned information Signed-off-by: Elena Ufimtseva Signed-off-by: John G Johnson Signed-off-by: Jagannathan Raman Reviewed-by: Stefan Hajnoczi --- hw/pci/proxy.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/hw/pci/proxy.c b/hw/pci/proxy.c index 029e78e85f..1e4b18e5b2 100644 --- a/hw/pci/proxy.c +++ b/hw/pci/proxy.c @@ -24,6 +24,8 @@ #include "sysemu/kvm.h" #include "util/event_notifier-posix.c" =20 +static void probe_pci_info(PCIDevice *dev, Error **errp); + static void proxy_set_socket(PCIProxyDev *pdev, int fd, Error **errp) { pdev->ioc =3D qio_channel_new_fd(fd, errp); @@ -87,6 +89,7 @@ static void setup_irqfd(PCIProxyDev *dev) static void pci_proxy_dev_realize(PCIDevice *device, Error **errp) { PCIProxyDev *dev =3D PCI_PROXY_DEV(device); + uint8_t *pci_conf =3D device->config; int fd; =20 if (dev->fd) { @@ -114,9 +117,14 @@ static void pci_proxy_dev_realize(PCIDevice *device, E= rror **errp) qemu_mutex_init(&dev->io_mutex); qio_channel_set_blocking(dev->ioc, true, NULL); =20 + pci_conf[PCI_LATENCY_TIMER] =3D 0xff; + pci_conf[PCI_INTERRUPT_PIN] =3D 0x01; + configure_memory_sync(&dev->sync, dev->ioc); =20 setup_irqfd(dev); + + probe_pci_info(PCI_DEVICE(dev), errp); } =20 static void pci_proxy_dev_exit(PCIDevice *pdev) @@ -266,3 +274,80 @@ const MemoryRegionOps proxy_mr_ops =3D { .max_access_size =3D 8, }, }; + +static void probe_pci_info(PCIDevice *dev, Error **errp) +{ + PCIDeviceClass *pc =3D PCI_DEVICE_GET_CLASS(dev); + uint32_t orig_val, new_val, base_class, val; + PCIProxyDev *pdev =3D PCI_PROXY_DEV(dev); + DeviceClass *dc =3D DEVICE_CLASS(pc); + uint8_t type; + int i, size; + char *name; + + config_op_send(pdev, PCI_VENDOR_ID, &val, 2, PCI_CONFIG_READ); + pc->vendor_id =3D (uint16_t)val; + + config_op_send(pdev, PCI_DEVICE_ID, &val, 2, PCI_CONFIG_READ); + pc->device_id =3D (uint16_t)val; + + config_op_send(pdev, PCI_CLASS_DEVICE, &val, 2, PCI_CONFIG_READ); + pc->class_id =3D (uint16_t)val; + + config_op_send(pdev, PCI_SUBSYSTEM_ID, &val, 2, PCI_CONFIG_READ); + pc->subsystem_id =3D (uint16_t)val; + + base_class =3D pc->class_id >> 4; + switch (base_class) { + case PCI_BASE_CLASS_BRIDGE: + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); + break; + case PCI_BASE_CLASS_STORAGE: + set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); + break; + case PCI_BASE_CLASS_NETWORK: + set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); + break; + case PCI_BASE_CLASS_INPUT: + set_bit(DEVICE_CATEGORY_INPUT, dc->categories); + break; + case PCI_BASE_CLASS_DISPLAY: + set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); + break; + case PCI_BASE_CLASS_PROCESSOR: + set_bit(DEVICE_CATEGORY_CPU, dc->categories); + break; + default: + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + break; + } + + for (i =3D 0; i < PCI_NUM_REGIONS; i++) { + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &orig_val, 4, + PCI_CONFIG_READ); + new_val =3D 0xffffffff; + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &new_val, 4, + PCI_CONFIG_WRITE); + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &new_val, 4, + PCI_CONFIG_READ); + size =3D (~(new_val & 0xFFFFFFF0)) + 1; + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &orig_val, 4, + PCI_CONFIG_WRITE); + type =3D (new_val & 0x1) ? + PCI_BASE_ADDRESS_SPACE_IO : PCI_BASE_ADDRESS_SPACE_MEMO= RY; + + if (size) { + pdev->region[i].dev =3D pdev; + pdev->region[i].present =3D true; + if (type =3D=3D PCI_BASE_ADDRESS_SPACE_MEMORY) { + pdev->region[i].memory =3D true; + } + name =3D g_strdup_printf("bar-region-%d", i); + memory_region_init_io(&pdev->region[i].mr, OBJECT(pdev), + &proxy_mr_ops, &pdev->region[i], + name, size); + pci_register_bar(dev, i, type, &pdev->region[i].mr); + g_free(name); + } + } +} --=20 2.25.GIT