netdev - [PATCH net-next v3 0/9] Add Gigabit Ethernet driver support

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Message-Id: <20210818190800.20191-1-biju.das.jz@bp.renesas.com>
Date:   Wed, 18 Aug 2021 20:07:51 +0100
From:   Biju Das <biju.das.jz@...renesas.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Sergey Shtylyov <s.shtylyov@...russia.ru>,
        Adam Ford <aford173@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Yuusuke Ashizuka <ashiduka@...itsu.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH net-next v3 0/9] Add Gigabit Ethernet driver support

The DMAC and EMAC blocks of Gigabit Ethernet IP found on RZ/G2L SoC are
similar to the R-Car Ethernet AVB IP.

The Gigabit Ethernet IP consists of Ethernet controller (E-MAC), Internal
TCP/IP Offload Engine (TOE)  and Dedicated Direct memory access controller
(DMAC).

With a few changes in the driver we can support both IPs.

Currently a runtime decision based on the chip type is used to distinguish
the HW differences between the SoC families.

This patch series is in preparation for supporting the RZ/G2L SoC by
replacing driver data chip type with struct ravb_hw_info by moving chip
type to it and also adding gstrings_stats, gstrings_size, net_hw_features,
net_features, aligned_tx, stats_len, max_rx_len variables to
it. This patch also adds the feature bit for {RX, TX} clock internal
delays and TX counters HW features found on R-Car Gen3 to struct
ravb_hw_info.

This patch series is based on net-next.
v2->v3:
 * Removed num_gstat_queue variable from struct ravb_hw_info.
 * started using unsigned int for num_tx_desc variable in struct ravb_private
 * split the patch 'Add struct ravb_hw_info to driver data' into two
 * Renamed skb_sz to max_rx_len and tx_drop_cntrs to tx_counters
   and also updated the comments.
v1->v2:
 * Replaced driver data chip type with struct ravb_hw_info
 * Added gstrings_stats, gstrings_size, net_hw_features, net_features,
   num_gstat_queue, num_tx_desc, stats_len, skb_sz to struct ravb_hw_info
 * Added internal_delay and tx_drop_cntrs hw feature bit to struct ravb_hw_info

RFC->V1
  * Incorporated feedback from Andrew, Sergei, Geert and Prabhakar
  * https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=515525

Biju Das (9):
  ravb: Use unsigned int for num_tx_desc variable in struct ravb_private
  ravb: Add struct ravb_hw_info to driver data
  ravb: Add aligned_tx to struct ravb_hw_info
  ravb: Add max_rx_len to struct ravb_hw_info
  ravb: Add stats_len to struct ravb_hw_info
  ravb: Add gstrings_stats and gstrings_size to struct ravb_hw_info
  ravb: Add net_features and net_hw_features to struct ravb_hw_info
  ravb: Add internal delay hw feature to struct ravb_hw_info
  ravb: Add tx_counters to struct ravb_hw_info

 drivers/net/ethernet/renesas/ravb.h      |  19 +++-
 drivers/net/ethernet/renesas/ravb_main.c | 112 ++++++++++++++---------
 2 files changed, 89 insertions(+), 42 deletions(-)

-- 
2.17.1