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feat(usb): every xHCI controller is driven, not only the first

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boards/BRINGUP.md A1, FABRIC-3 SXLII.  xhci.c keeps a table of controllers
(up to 8) and services each; kernel_main brings up index 0, 1, ... until
there is none.  repl.c's and blkio_usb.c's per-slot state is per
controller now (a slot ID is a controller's own), and each USB keyboard
keeps its own last report and lights; an unplugged keyboard releases what
it held.

Test first: keyboard and identity on a second controller behind a bridge,
Zuse on the first -- before, only Zuse; after, all three, on all three
ISAs.  Hot-plug and unplug on the second controller.  Acceptance unchanged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
rajames
2026-10-14 14:27:38 -04:00
co-authored by Claude Opus 5.5
parent 739cb9c163
commit e729c64ba3
27 changed files with 81701 additions and 260 deletions
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kernel/src/kernel_main.c
+10 -3
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@@ -793,9 +793,16 @@ static void kernel_main_deep(BootInfo *boot_info) {
* xhci_poll_events()'s own doc comment for why this driver is polled
* rather than interrupt-driven. */
{
static xhci_dev_t xhci_dev;
(void)(xhci_find_and_map(&xhci_dev) == 0 &&
xhci_bringup(&xhci_dev) == 0);
/* Every xHCI controller, not only the first (2026-10-14): a PC has
* several, each with its own ports, and a stick or keyboard may be
* in any of them. One that fails is skipped; the next is tried. */
static xhci_dev_t xhci_devs[XHCI_MAX_CONTROLLERS];
unsigned xi;
for (xi = 0; xi < XHCI_MAX_CONTROLLERS; xi++) {
int rc = xhci_find_and_map(&xhci_devs[xi], xi);
if (rc == 1) break;
if (rc == 0) (void)xhci_bringup(&xhci_devs[xi]);
}
}
/* FABRIC-0.md item 4.4g (decided 2026-08-11): console_fb_init() moved here,