linux-kernel - [PATCH net-next 0/4] net: ipa: IPA v4.5 aggregation and Qtime

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Message-Id: <20201130233712.29113-1-elder@linaro.org>
Date:   Mon, 30 Nov 2020 17:37:08 -0600
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     evgreen@...omium.org, subashab@...eaurora.org,
        cpratapa@...eaurora.org, bjorn.andersson@...aro.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 0/4] net: ipa: IPA v4.5 aggregation and Qtime

This series updates some IPA register definitions that change in
substantive ways for IPA v4.5.

One register defines parameters used by an endpoint to aggregate
multiple packets into a buffer.  The size and position of most
fields in that register have changed with this new hardware version,
and consequently the function that programs it needs to be done a
bit differently.  The first patch takes care of this.

Second, IPA v4.5 introduces a unified time keeping component to be
used in several places by the IPA hardware.  A main clock divider
provides a fundamental tick rate, and several timestamped features 
now define their granularity based on that.  There is also a set of
"pulse generators" derived from the main tick, and these are used
to implement timers used for aggregation and head-of-line block
avoidance.  The second patch adds IPA register updates to support
Qtime along with its configuration, and the last two patches
configure the timers that use it.

					-Alex

Alex Elder (4):
  net: ipa: update IPA aggregation registers for IPA v4.5
  net: ipa: set up IPA v4.5 Qtime configuration
  net: ipa: use Qtime for IPA v4.5 aggregation time limit
  net: ipa: use Qtime for IPA v4.5 head-of-line time limit

 drivers/net/ipa/ipa_endpoint.c | 174 +++++++++++++++++++++++++--------
 drivers/net/ipa/ipa_main.c     |  67 ++++++++++++-
 drivers/net/ipa/ipa_reg.h      |  68 +++++++++++--
 3 files changed, 260 insertions(+), 49 deletions(-)

-- 
2.20.1