opengnsys_ipxe/src
Michael Brown b418af26d9 [ehci] Support USB1 devices attached via transaction translators
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>
2015-03-23 16:23:08 +00:00
..
arch [libprefix] Fix building on 64-bit FreeBSD 8.4 2015-03-23 13:28:59 +00:00
bin Rename .cvsignore files to .gitignore 2007-06-09 22:57:00 +01:00
config [ehci] Add support for EHCI host controllers 2015-03-18 12:35:17 +00:00
core [legal] Relicense files under GPL2_OR_LATER_OR_UBDL 2015-03-05 11:40:13 +00:00
crypto [build] Fix the REQUIRE_SYMBOL mechanism 2015-03-05 00:59:38 +00:00
doc [build] Rename gPXE to iPXE 2010-04-19 23:43:39 +01:00
drivers [ehci] Support USB1 devices attached via transaction translators 2015-03-23 16:23:08 +00:00
hci [legal] Relicense files under GPL2_OR_LATER_OR_UBDL 2015-03-05 11:40:13 +00:00
image [legal] Relicense files under GPL2_OR_LATER_OR_UBDL 2015-03-02 16:35:29 +00:00
include [usb] Clear transaction translator buffers when applicable 2015-03-23 16:22:55 +00:00
interface [linux] Rewrite headers included in all builds 2015-03-05 02:43:37 +00:00
libgcc [build] Mark __intel_new_proc_init with __libgcc rather than cdecl 2009-08-03 15:56:10 +01:00
net [netdevice] Add missing bus types to netdev_fetch_bustype() 2015-03-18 16:42:39 +00:00
tests [libc] Add ffs(), ffsl(), and ffsll() 2015-03-16 15:40:53 +00:00
usr [autoboot] Match against parent devices when matching by bus type and location 2015-03-17 02:30:06 +00:00
util [build] Fix the REQUIRE_SYMBOL mechanism 2015-03-05 00:59:38 +00:00
.gitignore [build] Add support for local configuration files 2010-03-26 19:07:22 +00:00
Makefile [usb] Add basic support for USB hubs 2015-02-03 12:19:52 +00:00
Makefile.housekeeping [build] Remove obsolete and unused portions of config.c 2015-03-04 14:49:43 +00:00
doxygen.cfg [build] Remove PACKED macro 2010-05-29 23:49:47 +01:00