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| author | Sam Hurst <shurst@google.com> | 2020-08-14 13:05:20 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-08-22 01:49:02 +0000 |
| commit | c2c19821c41f0e20de1cc0c3f6103d338f868198 (patch) | |
| tree | 859ea9e3dc66ae683280c3b81d1b426237b8d61d /include/usb_prl_sm.h | |
| parent | 213015c44bd470565091a5eb429a593e79dfc52f (diff) | |
| download | chrome-ec-c2c19821c41f0e20de1cc0c3f6103d338f868198.tar.gz | |
TCPMv2: Don't interrupt RX/TX Extended Chunked Msg sequence
Delay sending a new message during the reception or
transmitting of Chunked messages.
BRANCH=none
BUG=b:161836223
TEST=make -j buildall
manual: Transmitted an extended message and verified
that the sequence was not interrupted by attempting
to send a VDM message.
Without patch
Chunked message request that was interrupted.
20-08-14 10:46:13.473 C1: RECV 9a9f/1 [0]00008c00
20-08-14 10:46:13.494 C1: RECV 9c9f/1 [0]00009400
20-08-14 10:46:13.516 C1: RECV 9e9f/1 [0]00009c00
20-08-14 10:46:13.535 C1: RECV 909f/1 [0]0000a400
Try to send VDM. MSG_TYPE is corrupted, was 0x1f, now 0x0f
20-08-14 10:46:13.563 C1: RECV 928f/1 [0]0000ac00
20-08-14 10:46:13.591 C1: RECV 948f/1 [0]0000b400
20-08-14 10:46:13.618 C1: RECV 968f/1 [0]0000bc00
20-08-14 10:46:13.645 C1: RECV 988f/1 [0]0000c400
20-08-14 10:46:13.674 C1: RECV 9a8f/1 [0]0000cc00
With patch.
Chunked message request was not interrupted.
20-08-14 10:50:56.052 C1: RECV 9a9f/1 [0]00008c00
20-08-14 10:50:56.075 C1: RECV 9c9f/1 [0]00009400
20-08-14 10:50:56.093 C1: RECV 9e9f/1 [0]00009c00
20-08-14 10:50:56.114 C1: RECV 909f/1 [0]0000a400
Try to send VDM. Message delayed
20-08-14 10:50:56.134 C1: RECV 929f/1 [0]0000ac00
20-08-14 10:50:56.155 C1: RECV 949f/1 [0]0000b400
20-08-14 10:50:56.175 C1: RECV 969f/1 [0]0000bc00
20-08-14 10:50:56.195 C1: RECV 989f/1 [0]0000c400
20-08-14 10:50:56.216 C1: RECV 9a9f/1 [0]0000cc00
20-08-14 10:50:56.242 C1: RECV 0c90/0
Try to send VDM.
Signed-off-by: Sam Hurst <shurst@google.com>wq
Change-Id: I5475792ee9f272fe4964e27839e55e3409a6a799
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2357414
Diffstat (limited to 'include/usb_prl_sm.h')
| -rw-r--r-- | include/usb_prl_sm.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/usb_prl_sm.h b/include/usb_prl_sm.h index 4f6f86e346..d5d133f250 100644 --- a/include/usb_prl_sm.h +++ b/include/usb_prl_sm.h @@ -22,6 +22,15 @@ int prl_is_running(int port); /** + * Returns true if the Protocol Layer State Machine is in the + * process of transmitting or receiving chunked messages. + * + * @param port USB-C port number + * @return true if sending or receiving a chunked message, else false + */ +bool prl_is_busy(int port); + +/** * Sets the debug level for the PRL layer * * @param level debug level |