Add pcie bifurcation #3
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nest1ing
approved these changes
Feb 20, 2023
This implements new OEM command to report PCIe bifurcation mode to UEFI.
The command returns list of IIO_BIFURCATION_DATA_ENTRY structs:
typedef struct _PLATFORM_IIO_BIFURCATION_ENTRY {
UINT8 Socket;
UINT8 IouNumber;
UINT8 Bifurcation;
} IIO_BIFURCATION_DATA_ENTRY;
Tested:
~# host-pcie-cfg
CPU PE Mode
---------------------------------
1 1 x16
1 2 x16
1 3 x8x8
---------------------------------
~# ipmitool raw 0x2e 0xB0 0x69 0xc2 0x00
69 c2 00 01 00 04 01 01 04 01 02 03
Ported from 2f55453aec33462124f73f337169daaaeaac5de9
Signed-off-by: Andrei Kartashev <[email protected]>
Signed-off-by: Igor Kononenko <[email protected]>
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This commit implements a way to get to host firmware information about requested PCIe bifurcation mode.
Bifurcation mode stored by settings daemon and transferred to host via OEM IPMI command. Other software may use dbus interface to change PCIe bifurcation configuration manually of based on some hardware information.