From 19e55471d4e8a494cfda7470e701829e3a873bdc Mon Sep 17 00:00:00 2001 From: Akihiko Odaki Date: Fri, 14 Mar 2025 15:14:54 +0900 Subject: 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 Message-Id: <20250314-sriov-v9-5-57dae8ae3ab5@daynix.com> Tested-by: Yui Washizu Tested-by: Pasha Tatashin Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/pci/pci_device.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/hw/pci/pci_device.h') diff --git a/include/hw/pci/pci_device.h b/include/hw/pci/pci_device.h index 345b12eaac..e41d95b0b0 100644 --- a/include/hw/pci/pci_device.h +++ b/include/hw/pci/pci_device.h @@ -38,6 +38,8 @@ struct PCIDeviceClass { uint16_t subsystem_id; /* only for header type = 0 */ const char *romfile; /* rom bar */ + + bool sriov_vf_user_creatable; }; enum PCIReqIDType { @@ -177,6 +179,8 @@ struct PCIDevice { * realizing the device. */ uint32_t max_bounce_buffer_size; + + char *sriov_pf; }; static inline int pci_intx(PCIDevice *pci_dev) @@ -209,7 +213,7 @@ 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) -- cgit 1.4.1