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authorArthur Hanson Rasmusson <arthur@vgpu.io>2026-10-01 15:35:35 -0400
committerArthur Hanson Rasmusson <arthur@vgpu.io>2026-10-01 15:35:35 -0400
commitfe3b01b72cba79d4b14875e6940a87987ad196a9 (patch)
tree59fa3342e0f3b32772c3d64be96514a0c6119ba2 /kernel/bar_init.c
parent69f0c2dbc4cd5f61302ae8d70002e1a1eb96da52 (diff)
downloadopen-iov-fe3b01b72cba79d4b14875e6940a87987ad196a9.tar.gz
open-iov-fe3b01b72cba79d4b14875e6940a87987ad196a9.zip
gsp-phys: populate the chipset/CL block of the pre-boot system info
Fill the GspSystemInfo chipset fields the production client syncs before the GSP boot instead of leaving them zero: - clPdbProperties (bitmask in the client's clSyncWithGsp order): bit 0 (config space accessible, from the OS MCFG/ECAM availability), bit 7 and bit 21 (Intel Skylake-family upstream-port setup: ASPM POR list, root-port nosnoop WAR), bit 13 (upstream port ASPM L1 capable), bit 27 (LTR supported+enabled up to the root port) and bit 32 (IO coherent). PDB_PROP_CL_UNSUPPORTED_CHIPSET is never assigned by the client, so the faithful unmatched-chipset value is 0. - Chipset = 0 (CS_UNKNOWN) for a host bridge with no chipsetInfo[] entry, the reference's no-match fallback. - FHBBusInfo/chipsetIDInfo: 10-byte BUSINFO blobs of the first host bridge of the GPU's domain (device, vendor, subdevice, subvendor, revision), with the subsystem-capability fallback on chipsetIDInfo. acpiMethodData is intentionally sent all-zero (bValid=0): no ACPI/AML calls are made and every consumer tolerates the no-data encoding. All device lookups use refcounted pci_get_device()/pci_dev_put().
Diffstat (limited to 'kernel/bar_init.c')
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