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* Queue: Add methods that accept a memcpy routineAnton Staaf2015-01-081-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | These versions of the queue add and remove methods support using memcpy like routines to access regions of memory with specific requirements. In particular, this will allow for transfers between queues and USB packet RAM on the STM32 which has specific access requirements. This change also includes an update to the mem* util routines to make their prototypes compatible with C89 and POSIX standards. Signed-off-by: Anton Staaf <robotboy@chromium.org> BRANCH=None BUG=None TEST=make buildall -j Test USB Echo functionality on discovery-stm32f072 board to ensure that queues still function correctly. Change-Id: I557064d99abfc3e8cfc98099a1d94334a976550c Reviewed-on: https://chromium-review.googlesource.com/239217 Tested-by: Anton Staaf <robotboy@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Commit-Queue: Anton Staaf <robotboy@chromium.org> Trybot-Ready: Anton Staaf <robotboy@chromium.org>
* Queue: Add functionality needed by new USART stream driverAnton Staaf2014-09-181-21/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | Previously there was no way to remove multiple units at a time from the queue, and the queue was wasting an entry to disambiguate full from empty. There was also no way to get the free entry count from the queue, only the ability to query if it was above a required amount. The queue was also storing its constant compile time configuration as well as its dynamic state in the same structure. This wasted RAM on configuration information that doesn't change. This refactor fixes these issues, making the queue suitable for use in the new USART stream driver. Signed-off-by: Anton Staaf <robotboy@chromium.org> BRANCH=None BUG=None TEST=make buildall -j Change-Id: I284cee52d8189928dbc4c499f87ab34e14019e5a Reviewed-on: https://chromium-review.googlesource.com/210533 Reviewed-by: Vic Yang <victoryang@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Commit-Queue: Anton Staaf <robotboy@chromium.org> Tested-by: Anton Staaf <robotboy@chromium.org>
* Refactor the i8042 module to be thread-safe.Louis Yung-Chieh Lo2012-06-071-0/+40
Any command/data coming from host will be placed in from_host queue, and the interrupt handler returns immediately. The i8042_command_task() will handle them later. Data reply to the host will be protected by the mutex. BUG=chrome-os-partner:10090 TEST=randomly play around on the link board. Change-Id: Ic19d5abd1abf8dc261ddaad4224cd9305c2f36a4 Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/24299 Commit-Ready: Yung-Chieh Lo <yjlou%chromium.org@gtempaccount.com> Reviewed-by: Yung-Chieh Lo <yjlou%chromium.org@gtempaccount.com> Tested-by: Yung-Chieh Lo <yjlou%chromium.org@gtempaccount.com>