From: Longpeng <longpe...@huawei.com> Add helpers to get the "Transitional PCI Device ID" and "class_id" of the deivce which is specificed by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later. Signed-off-by: Longpeng <longpe...@huawei.com> --- hw/virtio/virtio-pci.c | 93 ++++++++++++++++++++++++++++++++++++++++++ hw/virtio/virtio-pci.h | 4 ++ 2 files changed, 97 insertions(+) diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 750aa47ec1..843085c4ea 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -19,6 +19,7 @@ #include "exec/memop.h" #include "standard-headers/linux/virtio_pci.h" +#include "standard-headers/linux/virtio_ids.h" #include "hw/boards.h" #include "hw/virtio/virtio.h" #include "migration/qemu-file-types.h" @@ -213,6 +214,95 @@ static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) return 0; } +typedef struct VirtIOPCIIDInfo { + uint16_t vdev_id; /* virtio id */ + uint16_t pdev_id; /* pci device id */ + uint16_t class_id; +} VirtIOPCIIDInfo; + +static const VirtIOPCIIDInfo virtio_pci_id_info[] = { + { + .vdev_id = VIRTIO_ID_NET, + .pdev_id = PCI_DEVICE_ID_VIRTIO_NET, + .class_id = PCI_CLASS_NETWORK_ETHERNET, + }, + { + .vdev_id = VIRTIO_ID_BLOCK, + .pdev_id = PCI_DEVICE_ID_VIRTIO_BLOCK, + .class_id = PCI_CLASS_STORAGE_SCSI, + }, + { + .vdev_id = VIRTIO_ID_CONSOLE, + .pdev_id = PCI_DEVICE_ID_VIRTIO_CONSOLE, + .class_id = PCI_CLASS_COMMUNICATION_OTHER, + }, + { + .vdev_id = VIRTIO_ID_SCSI, + .pdev_id = PCI_DEVICE_ID_VIRTIO_SCSI, + .class_id = PCI_CLASS_STORAGE_SCSI, + }, + { + .vdev_id = VIRTIO_ID_9P, + .pdev_id = PCI_DEVICE_ID_VIRTIO_9P, + .class_id = PCI_BASE_CLASS_NETWORK, + }, + { + .vdev_id = VIRTIO_ID_VSOCK, + .pdev_id = PCI_DEVICE_ID_VIRTIO_VSOCK, + .class_id = PCI_CLASS_COMMUNICATION_OTHER, + }, + { + .vdev_id = VIRTIO_ID_IOMMU, + .pdev_id = PCI_DEVICE_ID_VIRTIO_IOMMU, + .class_id = PCI_CLASS_OTHERS, + }, + { + .vdev_id = VIRTIO_ID_MEM, + .pdev_id = PCI_DEVICE_ID_VIRTIO_MEM, + .class_id = PCI_CLASS_OTHERS, + }, + { + .vdev_id = VIRTIO_ID_PMEM, + .pdev_id = PCI_DEVICE_ID_VIRTIO_PMEM, + .class_id = PCI_CLASS_OTHERS, + }, + { + .vdev_id = VIRTIO_ID_RNG, + .pdev_id = PCI_DEVICE_ID_VIRTIO_RNG, + .class_id = PCI_CLASS_OTHERS, + }, + { + .vdev_id = VIRTIO_ID_BALLOON, + .pdev_id = PCI_DEVICE_ID_VIRTIO_BALLOON, + .class_id = PCI_CLASS_OTHERS, + }, +}; + +static VirtIOPCIIDInfo virtio_pci_get_id_info(uint16_t vdev_id) +{ + VirtIOPCIIDInfo info = {}; + int i; + + for (i = 0; i < ARRAY_SIZE(virtio_pci_id_info); i++) { + if (virtio_pci_id_info[i].vdev_id == vdev_id) { + info = virtio_pci_id_info[i]; + break; + } + } + + return info; +} + +uint16_t virtio_pci_get_pci_devid(uint16_t device_id) +{ + return virtio_pci_get_id_info(device_id).pdev_id; +} + +uint16_t virtio_pci_get_class_id(uint16_t device_id) +{ + return virtio_pci_get_id_info(device_id).class_id; +} + static bool virtio_pci_ioeventfd_enabled(DeviceState *d) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); @@ -1674,6 +1764,9 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp) * is set to PCI_SUBVENDOR_ID_REDHAT_QUMRANET by default. */ pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus)); + if (proxy->pdev_id) { + pci_config_set_device_id(config, proxy->pdev_id); + } } else { /* pure virtio-1.0 */ pci_set_word(config + PCI_VENDOR_ID, diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h index 2446dcd9ae..06aa59436e 100644 --- a/hw/virtio/virtio-pci.h +++ b/hw/virtio/virtio-pci.h @@ -146,6 +146,7 @@ struct VirtIOPCIProxy { bool disable_modern; bool ignore_backend_features; OnOffAuto disable_legacy; + uint16_t pdev_id; uint32_t class_code; uint32_t nvectors; uint32_t dfselect; @@ -158,6 +159,9 @@ struct VirtIOPCIProxy { VirtioBusState bus; }; +uint16_t virtio_pci_get_pci_devid(uint16_t device_id); +uint16_t virtio_pci_get_class_id(uint16_t device_id); + static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy) { return !proxy->disable_modern; -- 2.23.0