mirror of https://github.com/acidanthera/audk.git
8fc06b6e19
If a device which support both features SR-IOV/ARI has multi
functions, which maybe support 8-255. After enable ARI forwarding in
the root port and ARI Capable Hierarchy in the SR-IOV PF0.
The device will support and expose multi functions(0-255) with ARI ID routing.
In next device loop in below for() code, actually it still be in the
same SR-IOV device, and just some PF which is over 8 or higher
one(n*8), PciAllocateBusNumber() will allocate bus
number(ReservedBusNum - TempReservedBusNum)) for this PF. if reset
TempReservedBusNum as 0 in this case,it will allocate wrong bus number
for this PF because TempReservedBusNum should be total previous PF's
reserved bus numbers.
code:
for (Device = 0; Device <= PCI_MAX_DEVICE; Device++) {
TempReservedBusNum = 0;
for (Func = 0; Func <= PCI_MAX_FUNC; Func++) {
//
// Check to see whether a pci device is present
//
Status = PciDevicePresent (
PciRootBridgeIo,
&Pci,
StartBusNumber,
Device,
Func
);
...
Status = PciAllocateBusNumber (PciDevice, *SubBusNumber,
(UINT8)(PciDevice->ReservedBusNum - TempReservedBusNum), SubBusNumber);
The solution is add a new flag IsAriEnabled to help handle this case.
if ARI is enabled, then TempReservedBusNum will not be reset again
during all functions(1-255) scan with checking flag IsAriEnabled.
Signed-off-by: Foster Nong <foster.nong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
|
||
|---|---|---|
| .. | ||
| ComponentName.c | ||
| ComponentName.h | ||
| PciBus.c | ||
| PciBus.h | ||
| PciBusDxe.inf | ||
| PciBusDxe.uni | ||
| PciBusDxeExtra.uni | ||
| PciCommand.c | ||
| PciCommand.h | ||
| PciDeviceSupport.c | ||
| PciDeviceSupport.h | ||
| PciDriverOverride.c | ||
| PciDriverOverride.h | ||
| PciEnumerator.c | ||
| PciEnumerator.h | ||
| PciEnumeratorSupport.c | ||
| PciEnumeratorSupport.h | ||
| PciHotPlugSupport.c | ||
| PciHotPlugSupport.h | ||
| PciIo.c | ||
| PciIo.h | ||
| PciLib.c | ||
| PciLib.h | ||
| PciOptionRomSupport.c | ||
| PciOptionRomSupport.h | ||
| PciPowerManagement.c | ||
| PciPowerManagement.h | ||
| PciResourceSupport.c | ||
| PciResourceSupport.h | ||
| PciRomTable.c | ||
| PciRomTable.h | ||