[PATCH net-next v4 00/11] net: ethernet: ti: add networking support for k3 am65x/j721e soc

Grygorii Strashko
2020-03-17T07:27:59Z

Hi

This v4 series adds basic networking support support TI K3 AM654x/J721E SoC which
have integrated Gigabit Ethernet MAC (Media Access Controller) into device MCU
domain and named MCU_CPSW0 (CPSW2G NUSS).

Formally TRMs refer CPSW2G NUSS as two-port Gigabit Ethernet Switch subsystem
with port 0 being the CPPI DMA host port and port 1 being the external Ethernet
port, but for 1 external port device it's just Port 0 <-> ALE <-> Port 1 and it's
rather device with HW filtering capabilities then actually switching device.
It's expected to have similar devices, but with more external ports.

The new Host port 0 Communications Port Programming Interface (CPPI5) is
operating by TI AM654x/J721E NAVSS Unified DMA Peripheral Root Complex (UDMA-P)
controller [1].

The CPSW2G contains below modules for which existing code is re-used:
- MAC SL: cpsw_sl.c
- Address Lookup Engine (ALE): cpsw_ale.c, basically compatible with K2 66AK2E/G
- Management Data Input/Output interface (MDIO): davinci_mdio.c, fully
compatible with TI AM3/4/5 devices

Basic features supported by CPSW2G NUSS driver:
- VLAN support, 802.1Q compliant, Auto add port VLAN for untagged frames on
ingress, Auto VLAN removal on egress and auto pad to minimum frame size.
- multicast filtering
- promisc mode
- TX multiq support in Round Robin or Fixed priority modes
- RX checksum offload for non-fragmented IPv4/IPv6 TCP/UDP packets
- TX checksum offload support for IPv4/IPv6 TCP/UDP packets (J721E only).

Features under development:
- Support for IEEE 1588 Clock Synchronization. The CPSW2G NUSS includes new
version of Common Platform Time Sync (CPTS)
- tc-mqprio: priority level Quality Of Service (QOS) support (802.1p)
- tc-cbs: Support for Audio/Video Bridging (P802.1Qav/D6.0) HW shapers
- tc-taprio: IEEE 802.1Qbv/D2.2 Enhancements for Scheduled Traffic
- frame preemption: IEEE P902.3br/D2.0 Interspersing Express Traffic, 802.1Qbu
- extended ALE features: classifier/policers, auto-aging

Patches 1-6 are intended for netdev, Patches 7-11 are intended for K3 Platform
tree and provided here for testing purposes.

Changes in v4:
- fixed minor comments from Jakub Kicinski <kuba@kernel.org>
- dependencies resolved: required phy-rmii-sel changes [2] queued for merge
except one [3] which is included in this series with Kishon's ask.

Changes in v3:
- add ARM64 defconfig changes for testing purposes
- fixed DT yaml definition
- fixed comments from Jakub Kicinski <kuba@kernel.org>

Changes in v2:
- fixed DT yaml definition
- fixed comments from David Miller

v3: https://patchwork.ozlabs.org/cover/1254568/
v2: https://patchwork.ozlabs.org/cover/1250674/
v1: https://lwn.net/Articles/813087/

TRMs:
AM654: http://www.ti.com/lit/ug/spruid7e/spruid7e.pdf
J721E: http://www.ti.com/lit/ug/spruil1a/spruil1a.pdf

Preliminary documentation can be found at:
http://software-dl.ti.com/processor-sdk-linux/esd/docs/latest/linux/Foundational_Components/Kernel/Kernel_Drivers/Network/K3_CPSW2g.html

[1] https://lwn.net/Articles/808030/
[2] https://lkml.org/lkml/2020/2/22/100
[3] https://lkml.org/lkml/2020/3/3/724

Grygorii Strashko (11):
phy: ti: gmii-sel: simplify config dependencies between net drivers
and gmii phy
net: ethernet: ti: ale: fix seeing unreg mcast packets with promisc
and allmulti disabled
net: ethernet: ti: ale: add support for mac-only mode
net: ethernet: ti: ale: am65: add support for default thread cfg
dt-binding: ti: am65x: document mcu cpsw nuss
net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver
arm64: dts: ti: k3-am65-mcu: add cpsw nuss node
arm64: dts: k3-am654-base-board: add mcu cpsw nuss pinmux and phy defs
arm64: dts: ti: k3-j721e-mcu: add mcu cpsw nuss node
arm64: dts: ti: k3-j721e-common-proc-board: add mcu cpsw nuss pinmux
and phy defs
arm64: defconfig: ti: k3: enable dma and networking

.../bindings/net/ti,k3-am654-cpsw-nuss.yaml | 226 ++
arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi | 49 +
arch/arm64/boot/dts/ti/k3-am65.dtsi | 1 +
.../arm64/boot/dts/ti/k3-am654-base-board.dts | 42 +
.../dts/ti/k3-j721e-common-proc-board.dts | 43 +
.../boot/dts/ti/k3-j721e-mcu-wakeup.dtsi | 49 +
arch/arm64/boot/dts/ti/k3-j721e.dtsi | 1 +
arch/arm64/configs/defconfig | 3 +
drivers/net/ethernet/ti/Kconfig | 20 +-
drivers/net/ethernet/ti/Makefile | 3 +
drivers/net/ethernet/ti/am65-cpsw-ethtool.c | 747 +++++++
drivers/net/ethernet/ti/am65-cpsw-nuss.c | 1965 +++++++++++++++++
drivers/net/ethernet/ti/am65-cpsw-nuss.h | 143 ++
drivers/net/ethernet/ti/cpsw_ale.c | 38 +
drivers/net/ethernet/ti/cpsw_ale.h | 4 +
drivers/net/ethernet/ti/k3-udma-desc-pool.c | 126 ++
drivers/net/ethernet/ti/k3-udma-desc-pool.h | 30 +
drivers/phy/ti/Kconfig | 3 -
18 files changed, 3488 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
create mode 100644 drivers/net/ethernet/ti/am65-cpsw-ethtool.c
create mode 100644 drivers/net/ethernet/ti/am65-cpsw-nuss.c
create mode 100644 drivers/net/ethernet/ti/am65-cpsw-nuss.h
create mode 100644 drivers/net/ethernet/ti/k3-udma-desc-pool.c
create mode 100644 drivers/net/ethernet/ti/k3-udma-desc-pool.h