fix(usb): the xHCI controller is found by class on any bus, sized, taken from the firmware, and 64-byte contexts laid out

Browse Source

boards/BRINGUP.md A1, FABRIC-3 SXL.  It was matched by QEMU's own IDs on
bus 0 alone, so no real board's was found.  Now pci_find_class() reads
every bus/slot/function; pci_bar_size() sizes BAR0; the USB Legacy Support
capability hands the controller over from the BIOS, SMIs off; CSZ=1
contexts are placed 64 bytes apart instead of refused.  XHCI_QEMU_ARGS
lets QEMU place the controller as real hardware does.

Test first: an NEC controller behind a PCIe root port -- no attach before,
Zuse minted after, on all three ISAs.  Standard acceptance unchanged; five
hot-plugged identities attach.  Not rehearsable: firmware handoff, CSZ=1.
Still open: only the first controller found is used.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

...

This commit is contained in:

rajames

2026-10-14 13:30:50 -04:00

co-authored by Claude Opus 5.5

parent 0e2c60dac3

commit 080b7012ba

24 changed files with 72536 additions and 67 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

logs/20261014-131238/amd64/qemu-amd64-20261014-131238.log

+9018

File diff suppressed because it is too large Load Diff

logs/20261014-131934/amd64/qemu-amd64-20261014-131934.log

+9028

File diff suppressed because it is too large Load Diff

logs/20261014-132056/aarch64/qemu-aarch64-20261014-132056.log

+8999

File diff suppressed because it is too large Load Diff

logs/20261014-132257/riscv64/qemu-riscv64-20261014-132257.log

+9072

File diff suppressed because it is too large Load Diff

logs/20261014-132431/amd64/qemu-amd64-20261014-132431.log

+9028

File diff suppressed because it is too large Load Diff

logs/20261014-132548/aarch64/qemu-aarch64-20261014-132548.log

+9000

File diff suppressed because it is too large Load Diff

logs/20261014-132746/riscv64/qemu-riscv64-20261014-132746.log

+9072

File diff suppressed because it is too large Load Diff

logs/20261014-132912/amd64/qemu-amd64-20261014-132912.log

+9057

File diff suppressed because it is too large Load Diff