| Message ID | cover.1742411889.git.gerickson@nuovations.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add QMI Device Service Request Rate-limit Option | expand |
Hello: This series was applied to ofono.git (master) by Denis Kenzior <denkenz@gmail.com>: On Wed, 19 Mar 2025 12:22:27 -0700 you wrote: > Certain modems, among them the Quectel Wireless Solutions Co., > Ltd. (2c7c) BG96 CAT-M1/NB-IoT modem (0296), have a firmware issue > where they can lock up and hang (not responding to subsequent > commands) due to high QMI service request arrival rates. > > QMI service request rate limiting is achieved by: > > [...] Here is the summary with links: - [v6,1/7] qmi: Added enumeration for device quirk flags. https://git.kernel.org/pub/scm/network/ofono/ofono.git/?id=3a096f6fc033 - [v6,2/7] qmi: Added structure for device options. https://git.kernel.org/pub/scm/network/ofono/ofono.git/?id=869db3348c6b - [v6,3/7] qmi: Added device options parameter to 'qmi_qmux_device_new'. https://git.kernel.org/pub/scm/network/ofono/ofono.git/?id=c4b04bbc64e0 - [v6,4/7] qmi: Implement QMI service request rate limiting in 'can_write_data'. https://git.kernel.org/pub/scm/network/ofono/ofono.git/?id=fd68bb5082dd - [v6,5/7] qmi: Handle request rate limit option in 'qmi_qmux_device_new'. (no matching commit) - [v6,6/7] udevng: Set the QMI minimum service request period for Quectel BG96 modems. https://git.kernel.org/pub/scm/network/ofono/ofono.git/?id=e546475a1816 - [v6,7/7] gobi: Pass QMI qmux device options to 'qmi_qmux_device_new'. (no matching commit) You are awesome, thank you!
Certain modems, among them the Quectel Wireless Solutions Co., Ltd. (2c7c) BG96 CAT-M1/NB-IoT modem (0296), have a firmware issue where they can lock up and hang (not responding to subsequent commands) due to high QMI service request arrival rates. QMI service request rate limiting is achieved by: 1. Adding a new, optional options structure to qmi_qmux_device_new that has its rate-limit "quirk" and minimum request period fields set when the modem "RequestThrottleTimeUs" integer property is set. 2. Adding logic to the QMI driver that, when a minimum request period is set, limits the QMI service request rate accordingly. (1) and (2) are used by the udevng and gobi plugins such that when the modem vendor and model match 2c7c/0296, then the option to rate limit QMI service requests is set to no more than one every 2,000 us. Grant Erickson (7): qmi: Added enumeration for device quirk flags. qmi: Added structure for device options. qmi: Added device options parameter to 'qmi_qmux_device_new'. qmi: Implement QMI service request rate limiting in 'can_write_data'. qmi: Handle request rate limit option in 'qmi_qmux_device_new'. udevng: Set the QMI minimum service request period for Quectel BG96 modems. gobi: Pass QMI qmux device options to 'qmi_qmux_device_new'. drivers/qmimodem/qmi.c | 51 +++++++++++++++++++++++++++++++++++++++++- drivers/qmimodem/qmi.h | 40 ++++++++++++++++++++++++++++++++- plugins/gobi.c | 22 +++++++++++++++++- plugins/udevng.c | 14 ++++++++++++ 4 files changed, 124 insertions(+), 3 deletions(-)