diff options
| author | Akihiko Odaki <akihiko.odaki@daynix.com> | 2024-07-15 14:19:11 +0900 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-07-22 20:15:41 -0400 |
| commit | 122173a5830f7757f8a94a3b1559582f312e140b (patch) | |
| tree | a2b02620a4e11052f10f2bfc71e4e999216162e5 /include/hw | |
| parent | 47cc753e50076c25334091783738be9f716253b1 (diff) | |
| download | focaccia-qemu-122173a5830f7757f8a94a3b1559582f312e140b.tar.gz focaccia-qemu-122173a5830f7757f8a94a3b1559582f312e140b.zip | |
pcie_sriov: Allow user to create SR-IOV device
A user can create a SR-IOV device by specifying the PF with the sriov-pf property of the VFs. The VFs must be added before the PF. A user-creatable VF must have PCIDeviceClass::sriov_vf_user_creatable set. Such a VF cannot refer to the PF because it is created before the PF. A PF that user-creatable VFs can be attached calls pcie_sriov_pf_init_from_user_created_vfs() during realization and pcie_sriov_pf_exit() when exiting. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20240715-sriov-v5-5-3f5539093ffc@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/pci/pci_device.h | 6 | ||||
| -rw-r--r-- | include/hw/pci/pcie_sriov.h | 18 |
2 files changed, 23 insertions, 1 deletions
diff --git a/include/hw/pci/pci_device.h b/include/hw/pci/pci_device.h index ca15132508..cefd6f7640 100644 --- a/include/hw/pci/pci_device.h +++ b/include/hw/pci/pci_device.h @@ -37,6 +37,8 @@ struct PCIDeviceClass { uint16_t subsystem_id; /* only for header type = 0 */ const char *romfile; /* rom bar */ + + bool sriov_vf_user_creatable; }; enum PCIReqIDType { @@ -160,6 +162,8 @@ struct PCIDevice { /* ID of standby device in net_failover pair */ char *failover_pair_id; uint32_t acpi_index; + + char *sriov_pf; }; static inline int pci_intx(PCIDevice *pci_dev) @@ -192,7 +196,7 @@ static inline int pci_is_express_downstream_port(const PCIDevice *d) static inline int pci_is_vf(const PCIDevice *d) { - return d->exp.sriov_vf.pf != NULL; + return d->sriov_pf || d->exp.sriov_vf.pf != NULL; } static inline uint32_t pci_config_size(const PCIDevice *d) diff --git a/include/hw/pci/pcie_sriov.h b/include/hw/pci/pcie_sriov.h index c5d2d318d3..f75b8f22ee 100644 --- a/include/hw/pci/pcie_sriov.h +++ b/include/hw/pci/pcie_sriov.h @@ -18,6 +18,7 @@ typedef struct PCIESriovPF { uint8_t vf_bar_type[PCI_NUM_REGIONS]; /* Store type for each VF bar */ PCIDevice **vf; /* Pointer to an array of num_vfs VF devices */ + bool vf_user_created; /* If VFs are created by user */ } PCIESriovPF; typedef struct PCIESriovVF { @@ -40,6 +41,23 @@ void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num, void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num, MemoryRegion *memory); +/** + * pcie_sriov_pf_init_from_user_created_vfs() - Initialize PF with user-created + * VFs. + * @dev: A PCIe device being realized. + * @offset: The offset of the SR-IOV capability. + * @errp: pointer to Error*, to store an error if it happens. + * + * Return: The size of added capability. 0 if the user did not create VFs. + * -1 if failed. + */ +int16_t pcie_sriov_pf_init_from_user_created_vfs(PCIDevice *dev, + uint16_t offset, + Error **errp); + +bool pcie_sriov_register_device(PCIDevice *dev, Error **errp); +void pcie_sriov_unregister_device(PCIDevice *dev); + /* * Default (minimal) page size support values * as required by the SR/IOV standard: |