[v2,00/14] mediatek: add support for MediaTek Ethernet MAC

Message

Bartosz Golaszewski May 11, 2020, 3:07 p.m. UTC

From: Bartosz Golaszewski <[e-mail]>

This adds support for the Ethernet Controller present on MediaTeK SoCs
from the MT8* family.

The first two patches add binding documents for the PERICFG syscon and
for the MAC itself.

Patches 3/14 & 4/14 do some cleanup of the mediatek ethernet drivers
directory.

Patch 5/14 provides a new helper that allows to retrieve the address of
the net_device associated with given private data address.

Patches 6-8/14 introduce the managed variant of register_netdev().

Patch 9/11 adds the new ethernet driver.

The rest of the patches add DT fixups for the boards already supported
upstream.

v1 -> v2:
- add a generic helper for retrieving the net_device associated with given
  private data
- fix several typos in commit messages
- remove MTK_MAC_VERSION and don't set the driver version
- use NET_IP_ALIGN instead of a magic number (2) but redefine it as it defaults
  to 0 on arm64
- don't manually turn the carrier off in mtk_mac_enable()
- process TX cleanup in napi poll callback
- configure pause in the adjust_link callback
- use regmap_read_poll_timeout() instead of handcoding the polling
- use devres_find() to verify that struct net_device is managed by devres in
  devm_register_netdev()
- add a patch moving all networking devres helpers into net/devres.c
- tweak the dma barriers: remove where unnecessary and add comments to the
  remaining barriers
- don't reset internal counters when enabling the NIC
- set the net_device's mtu size instead of checking the framesize in
  ndo_start_xmit() callback
- fix a race condition in waking up the netif queue
- don't emit log messages on OOM errors
- use dma_set_mask_and_coherent()
- use eth_hw_addr_random()
- rework the receive callback so that we reuse the previous skb if unmapping
  fails, like we already do if skb allocation fails
- rework hash table operations: add proper timeout handling and clear bits when
  appropriate

Bartosz Golaszewski (14):
  dt-bindings: arm: add a binding document for MediaTek PERICFG
    controller
  dt-bindings: net: add a binding document for MediaTek Ethernet MAC
  net: ethernet: mediatek: rename Kconfig prompt
  net: ethernet: mediatek: remove unnecessary spaces from Makefile
  net: core: provide priv_to_netdev()
  net: move devres helpers into a separate source file
  net: devres: define a separate devres structure for
    devm_alloc_etherdev()
  net: devres: provide devm_register_netdev()
  net: ethernet: mtk-eth-mac: new driver
  ARM64: dts: mediatek: add pericfg syscon to mt8516.dtsi
  ARM64: dts: mediatek: add the ethernet node to mt8516.dtsi
  ARM64: dts: mediatek: add an alias for ethernet0 for pumpkin boards
  ARM64: dts: mediatek: add ethernet pins for pumpkin boards
  ARM64: dts: mediatek: enable ethernet on pumpkin boards

 .../arm/mediatek/mediatek,pericfg.yaml        |   34 +
 .../bindings/net/mediatek,eth-mac.yaml        |   80 +
 arch/arm64/boot/dts/mediatek/mt8516.dtsi      |   17 +
 .../boot/dts/mediatek/pumpkin-common.dtsi     |   34 +
 drivers/net/ethernet/mediatek/Kconfig         |    8 +-
 drivers/net/ethernet/mediatek/Makefile        |    3 +-
 drivers/net/ethernet/mediatek/mtk_eth_mac.c   | 1561 +++++++++++++++++
 include/linux/netdevice.h                     |   14 +
 net/Makefile                                  |    2 +-
 net/devres.c                                  |   95 +
 net/ethernet/eth.c                            |   28 -
 11 files changed, 1845 insertions(+), 31 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,pericfg.yaml
 create mode 100644 Documentation/devicetree/bindings/net/mediatek,eth-mac.yaml
 create mode 100644 drivers/net/ethernet/mediatek/mtk_eth_mac.c
 create mode 100644 net/devres.c