Commit graph

3 commits

Author SHA1 Message Date
Alex Elder
6ec7a9c2e8 net: ipa: extend the INDICATION_REGISTER request
The specified format of the INDICATION_REGISTER QMI request message
has been extended to support two more optional fields:
  endpoint_desc_ind:
    sender wishes to receive endpoint descriptor information via
    an IPA ENDP_DESC indication QMI message
  bw_change_ind:
    sender wishes to receive bandwidth change information via
    an IPA BW_CHANGE indication QMI message

Add definitions that permit these fields to be formatted and parsed
by the QMI library code.

Signed-off-by: Alex Elder <elder@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16 11:17:59 -07:00
Alex Elder
8701cb00d7 net: ipa: define enumerated types consistently
Consistently define numeric values for enumerated type members using
hexidecimal (rather than decimal) format values.  Align the values
assigned in the same column in each file.

Only assign values where they really matter, for example don't
assign IPA_ENDPOINT_AP_MODEM_TX the value 0.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-18 15:53:48 -08:00
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