2 Commits

Author	SHA1	Message	Date
Alex Elder	74478ea4de	net: ipa: fix QMI structure definition bugs ... Building with "W=1" did exactly what it was supposed to do, namely point out some suspicious-looking code to be verified not to contain bugs. Some QMI message structures defined in "ipa_qmi_msg.c" contained some bad field names (duplicating the "elem_size" field instead of defining the "offset" field), almost certainly due to copy/paste errors that weren't obvious in a scan of the code. Fix these bugs. Fixes: 530f9216a9 ("soc: qcom: ipa: AP/modem communications") Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>	2020-07-07 12:43:18 -07:00
Alex Elder	530f9216a9	soc: qcom: ipa: AP/modem communications ... This patch implements two forms of out-of-band communication between the AP and modem. - QMI is a mechanism that allows clients running on the AP interact with services running on the modem (and vice-versa). The AP IPA driver uses QMI to communicate with the corresponding IPA driver resident on the modem, to agree on parameters used with the IPA hardware and to ensure both sides are ready before entering operational mode. - SMP2P is a more primitive mechanism available for the modem and AP to communicate with each other. It provides a means for either the AP or modem to interrupt the other, and furthermore, to provide 32 bits worth of information. The IPA driver uses SMP2P to tell the modem what the state of the IPA clock was in the event of a crash. This allows the modem to safely access the IPA hardware (or avoid doing so) when a crash occurs, for example, to access information within the IPA hardware. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>	2020-03-08 22:07:10 -07:00