Justin Hammond 24132be56e drivers/usbhost: Read xHCI registers at the required access width. ...

xHCI requires aligned accesses of each register's own size, and a
controller may ignore narrower ones; QEMU's does.  volatile does not pin
the access width: GCC 16.1.0 at -Os narrows a 32-bit load feeding a
single bit test into a byte load, so polling USBSTS for HCH never
observes the halted state.

Launder each register value through a register with an empty asm, on
loads and stores both, so the access is the width the source specifies.

Assisted-by: Claude:claude-opus-5
Signed-off-by: Justin Hammond <justin@dynam.ac>

2026-08-17 10:10:47 -03:00

..

CMakeLists.txt

drivers/usbhost/usbhost_cdcecm.c: Added support for Host CDC-ECM

2026-05-06 06:20:03 +08:00

hid_parser.c

…

Kconfig

drivers/usbhost: Let the HID keyboard pick its interrupt pipe.

2026-08-09 20:57:41 +08:00

Make.defs

drivers/usbhost/usbhost_cdcecm.c: Added support for Host CDC-ECM

2026-05-06 06:20:03 +08:00

usbhost_bthci.c

…

usbhost_cdcacm.c

…

usbhost_cdcecm.c

drivers/usbhost/usbhost_cdcecm.c: Converted CDC-ECM to lower half

2026-05-06 06:20:03 +08:00

usbhost_cdcmbim.c

drivers/: Multiple Drivers Are Registered With World Writable - Part 2

2026-07-15 15:27:28 +08:00

usbhost_composite.c

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usbhost_composite.h

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usbhost_devaddr.c

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usbhost_drivers.c

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usbhost_enumerate.c

usbhost: Report each device as it is enumerated.

2026-08-09 02:09:47 +08:00

usbhost_findclass.c

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usbhost_ft232r.c

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usbhost_hidkbd.c

drivers/usbhost: Do not unregister a HID keyboard that never registered.

2026-08-09 20:57:41 +08:00

usbhost_hidmouse.c

drivers/: Multiple Drivers Are Registered With World Writable - Part 2

2026-07-15 15:27:28 +08:00

usbhost_hub.c

…

usbhost_max3421e.c

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usbhost_registerclass.c

drivers/usbhost: Refuse to register the same class driver twice.

2026-08-08 14:55:34 -03:00

usbhost_registry.c

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usbhost_registry.h

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usbhost_skeleton.c

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usbhost_storage.c

drivers/usbhost: Register the partitions on a mass storage device.

2026-08-08 14:40:52 -03:00

usbhost_trace.c

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usbhost_waiter.c

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usbhost_xboxcontroller.c

drivers/: Multiple Drivers Are Registered With World Writable - Part 2

2026-07-15 15:27:28 +08:00

usbhost_xhci_pci.c

drivers/usbhost: Read xHCI registers at the required access width.

2026-08-17 10:10:47 -03:00

usbhost_xhci_trace.c

drivers/usbhost: Correct the xHCI controller name in a trace string.

2026-08-08 14:55:00 -03:00

usbhost_xhci_trace.h

drivers/usbhost: Define the xHCI endpoint-allocation trace.

2026-08-08 14:55:00 -03:00

usbhost_xhci.h

…