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pcie_sriov: Allow user to create SR-IOV device

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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>
This commit is contained in:
Akihiko Odaki 2024-07-15 14:19:11 +09:00 • committed by Michael S. Tsirkin
parent 47cc753e50
commit 122173a583
4 changed files with 293 additions and 83 deletions
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6
include/hw/pci/pci_device.h
View file

@ -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)