It is found that SOS will reset the PCI devices under PCI
bridge 00:1c.0 when 00:1c.0 is exposed to SOS. If a PCI
device under 00:1c.0 is passed through to pre-launched VM,
it will be reset by SOS at startup hence the passthrough
will not work properly. This patch provides a workaround
by hiding PCI bridge 00:1c.0 from SOS in this case.
Tracked-On: #5346
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
According PCI Code and ID Assignment Specification Revision 1.11, a PCI device
whose Base Class is 06h and Sub-Class is 00h is a Host bridge.
Tracked-On: #4550
Signed-off-by: Li Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
The init_one_dev_config is used to initialize a acrn_vm_pci_dev_config
SRIOV needs a explicit acrn_vm_pci_dev_config to create a VF vdev,so
refine it to return acrn_vm_pci_dev_config.
Tracked-On: #4433
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Make the SRIOV-Capable device invisible from SOS if there is
no room for its all virtual functions.
v2: fix a issue that if a PF has been dropped, the subsequent PF
will be dropped too even there is room for its VFs.
Tracked-On: #4433
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
- update the function argument type to union
Declaring argument as pointer is not necessary since it
only does the comparison.
Tracked-On: #1842
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Add a field (vdev_ops) in struct acrn_vm_pci_dev_config to configure a PCI CFG
operation for an emulated PCI device. Use pci_pt_dev_ops for PCI_DEV_TYPE_PTDEV
by default if there's no such configure.
Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Add emulated PCI device configure for SOS to prepare for add support for customizing
special pci operations for each emulated PCI device.
Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Align SOS pci device configure with pre-launched VM and filter pre-launched VM's
PCI PT device from SOS pci device configure.
Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
