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bh=/Zh8p4SflgSqAiHL8Zqv7hpdRPhsOqr+pSuTgvlZxJk=; b=FLAqeiKi4jByNrnjE87l92kuDXUnZgwUrSy/pmj54m9eO0O88ignssyzz4/nTr9axCB1Lw cqEYdV/inEhr5Pr4GX+Ixb9cb9V/F1DguAkOO2uVhQcT41j6OrNiu+6OVCqaPBpZQ6oVDW d/y4lK5pSw7vCXzMpfCsFOtL06zN0zo= X-MC-Unique: 3KQiGwTON72ivyBQkylDJA-1 From: Stefan Hajnoczi To: Peter Maydell , qemu-devel@nongnu.org Subject: [PULL 25/27] multi-process: Retrieve PCI info from remote process Date: Thu, 4 Feb 2021 09:58:32 +0000 Message-Id: <20210204095834.345749-26-stefanha@redhat.com> In-Reply-To: <20210204095834.345749-1-stefanha@redhat.com> References: <20210204095834.345749-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=stefanha@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.539, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MIME_BASE64_TEXT=1.741, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=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: Elena Ufimtseva , Fam Zheng , Thomas Huth , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , qemu-block@nongnu.org, John G Johnson , "Denis V. Lunev" , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Michael S. Tsirkin" , Wainer dos Santos Moschetta , Stefan Hajnoczi , Paolo Bonzini , Igor Mammedov , Jagannathan Raman , =?UTF-8?q?Alex=20Benn=C3=A9e?= 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 Message-id: 85ee367bbb993aa23699b44cfedd83b4ea6d5221.1611938319.git.jag.ram= an@oracle.com Signed-off-by: Stefan Hajnoczi --- hw/remote/proxy.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/hw/remote/proxy.c b/hw/remote/proxy.c index 555b3103f4..a082709881 100644 --- a/hw/remote/proxy.c +++ b/hw/remote/proxy.c @@ -25,6 +25,8 @@ #include "sysemu/kvm.h" #include "util/event_notifier-posix.c" =20 +static void probe_pci_info(PCIDevice *dev, Error **errp); + static void proxy_intx_update(PCIDevice *pci_dev) { PCIProxyDev *dev =3D PCI_PROXY_DEV(pci_dev); @@ -77,6 +79,7 @@ static void pci_proxy_dev_realize(PCIDevice *device, Erro= r **errp) { ERRP_GUARD(); PCIProxyDev *dev =3D PCI_PROXY_DEV(device); + uint8_t *pci_conf =3D device->config; int fd; =20 if (!dev->fd) { @@ -106,9 +109,14 @@ 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; + proxy_memory_listener_configure(&dev->proxy_listener, dev->ioc); =20 setup_irqfd(dev); + + probe_pci_info(PCI_DEVICE(dev), errp); } =20 static void pci_proxy_dev_exit(PCIDevice *pdev) @@ -274,3 +282,79 @@ 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; + + config_op_send(pdev, PCI_VENDOR_ID, &val, 2, MPQEMU_CMD_PCI_CFGREAD); + pc->vendor_id =3D (uint16_t)val; + + config_op_send(pdev, PCI_DEVICE_ID, &val, 2, MPQEMU_CMD_PCI_CFGREAD); + pc->device_id =3D (uint16_t)val; + + config_op_send(pdev, PCI_CLASS_DEVICE, &val, 2, MPQEMU_CMD_PCI_CFGREAD= ); + pc->class_id =3D (uint16_t)val; + + config_op_send(pdev, PCI_SUBSYSTEM_ID, &val, 2, MPQEMU_CMD_PCI_CFGREAD= ); + 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, + MPQEMU_CMD_PCI_CFGREAD); + new_val =3D 0xffffffff; + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &new_val, 4, + MPQEMU_CMD_PCI_CFGWRITE); + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &new_val, 4, + MPQEMU_CMD_PCI_CFGREAD); + size =3D (~(new_val & 0xFFFFFFF0)) + 1; + config_op_send(pdev, PCI_BASE_ADDRESS_0 + (4 * i), &orig_val, 4, + MPQEMU_CMD_PCI_CFGWRITE); + type =3D (new_val & 0x1) ? + PCI_BASE_ADDRESS_SPACE_IO : PCI_BASE_ADDRESS_SPACE_MEMO= RY; + + if (size) { + g_autofree char *name; + 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); + } + } +} --=20 2.29.2