linux-kernel - [PATCH next-next v4 0/2] Add support for partial store and forward

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Message-ID: <20230613054340.12837-1-pranavi.somisetty@amd.com>
Date:   Mon, 12 Jun 2023 23:43:38 -0600
From:   Pranavi Somisetty <pranavi.somisetty@....com>
To:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <nicolas.ferre@...rochip.com>,
        <claudiu.beznea@...rochip.com>
CC:     <git@....com>, <michal.simek@....com>, <harini.katakam@....com>,
        <radhey.shyam.pandey@....com>, <pranavi.somisetty@....com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH next-next v4 0/2] Add support for partial store and forward

Add support for partial store and forward mode in Cadence MACB.

Link for v1:
https://lore.kernel.org/all/20221213121245.13981-1-pranavi.somisetty@amd.com/

Changes v2:
1. Removed all the changes related to validating FCS when Rx checksum
offload is disabled.
2. Instead of using a platform dependent number (0xFFF) for the reset
value of rx watermark, derive it from designcfg_debug2 register.
3. Added a check to see if partial s/f is supported, by reading the
designcfg_debug6 register.
4. Added devicetree bindings for "rx-watermark" property.
Link for v2:
https://lore.kernel.org/all/20230511071214.18611-1-pranavi.somisetty@amd.com/

Changes v3:
1. Fixed DT schema error: "scalar properties shouldn't have array keywords"
2. Modified description of rx-watermark in to include units of the watermark value
3. Modified the DT property name corresponding to rx_watermark in pbuf_rxcutthru to
"cdns,rx-watermark".
4. Followed reverse christmas tree pattern in declaring variables.
5. Return -EINVAL when an invalid watermark value is set.
6. Removed netdev_info when partial store and forward is not enabled.
7. Validating the rx-watermark value in probe itself and only write to the register
in init.
8. Writing a reset value to the pbuf_cuthru register before disabing partial store
and forward is redundant. So removing it.
9. Removed the platform caps flag.
10. Instead of reading rx-watermark from DT in macb_configure_caps,
reading it in probe.
11. Changed Signed-Off-By and author names on the macb driver patch.
Link for v3:
https://lore.kernel.org/all/20230530095138.1302-1-pranavi.somisetty@amd.com/

Changes v4:
1. Modified description for "rx-watermark" property in the DT bindings.
2. Changed the width of the rx-watermark property to uint32.
3. Removed redundant code and unused variables.
4. When the rx-watermark value is invalid, instead of returning EINVAL,
do not enable partial store and forward. 

Maulik Jodhani (1):
  net: macb: Add support for partial store and forward

Pranavi Somisetty (1):
  dt-bindings: net: cdns,macb: Add rx-watermark property

 .../devicetree/bindings/net/cdns,macb.yaml    | 11 ++++++++
 drivers/net/ethernet/cadence/macb.h           | 12 +++++++++
 drivers/net/ethernet/cadence/macb_main.c      | 27 +++++++++++++++++++
 3 files changed, 50 insertions(+)

-- 
2.36.1