[net-next,v2,0/8] Add Gigabit Ethernet driver support

Message

Biju Das Aug. 2, 2021, 10:26 a.m. UTC

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, num_gstat_queue, num_tx_desc, stats_len, skb_sz variables to
it. This patch also adds the feature bit for {RX, TX} clock internal
delays and TX Drop counters HW features found on R-Car Gen3 to struct
ravb_hw_info.

This patch series is based on net-next.

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 (8):
  ravb: Add struct ravb_hw_info to driver data
  ravb: Add skb_sz to struct ravb_hw_info
  ravb: Add num_gstat_queue 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_drop_cntrs to struct ravb_hw_info

 drivers/net/ethernet/renesas/ravb.h      | 18 +++++
 drivers/net/ethernet/renesas/ravb_main.c | 91 ++++++++++++++++--------
 2 files changed, 80 insertions(+), 29 deletions(-)