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Support low-speed and full-speed devices attached to a USB2 hub. Such devices use a transaction translator (TT) within the USB2 hub, which asynchronously initiates transactions on the lower-speed bus and returns the result via a split completion on the high-speed bus. We make the simplifying assumption that there will never be more than sixteen active interrupt endpoints behind a single transaction translator; this assumption allows us to schedule all periodic start splits in microframe 0 and all periodic split completions in microframes 2 and 3. (We do not handle isochronous endpoints.) Signed-off-by: Michael Brown <mcb30@ipxe.org> |
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arch | ||
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core | ||
crypto | ||
doc | ||
drivers | ||
hci | ||
image | ||
include | ||
interface | ||
libgcc | ||
net | ||
tests | ||
usr | ||
util | ||
.gitignore | ||
Makefile | ||
Makefile.housekeeping | ||
doxygen.cfg |