Hi Grygorii, On 17/03/2020 9.27, Grygorii Strashko wrote: > The TI AM65x/J721E SoCs Gigabit Ethernet Switch subsystem (CPSW2G NUSS) has > two ports - One Ethernet port (port 1) with selectable RGMII and RMII > interfaces and an internal Communications Port Programming Interface (CPPI) > port (Host port 0) and with ALE in between. It also contains > - Management Data Input/Output (MDIO) interface for physical layer device > (PHY) management; > - Updated Address Lookup Engine (ALE) module; > - (TBD) New version of Common platform time sync (CPTS) module. > > On the TI am65x/J721E SoCs CPSW NUSS Ethernet subsystem into device MCU > domain named MCU_CPSW0. > > Host Port 0 CPPI Packet Streaming Interface interface supports 8 TX > channels and one RX channels operating by TI am654 NAVSS Unified DMA > Peripheral Root Complex (UDMA-P) controller. > > Introduced driver provides standard Linux net_device to user space and supports: > - ifconfig up/down > - MAC address configuration > - ethtool operation: > --driver > --change > --register-dump > --negotiate phy > --statistics > --set-eee phy > --show-ring > --show-channels > --set-channels > - net_device ioctl mii-control > - promisc mode > > - rx checksum offload for non-fragmented IPv4/IPv6 TCP/UDP packets. > The CPSW NUSS can verify IPv4/IPv6 TCP/UDP packets checksum and fills > csum information for each packet in psdata[2] word: > - BIT(16) CHECKSUM_ERROR - indicates csum error > - BIT(17) FRAGMENT - indicates fragmented packet > - BIT(18) TCP_UDP_N - Indicates TCP packet was detected > - BIT(19) IPV6_VALID, BIT(20) IPV4_VALID - indicates IPv6/IPv4 packet > - BIT(15, 0) CHECKSUM_ADD - This is the value that was summed > during the checksum computation. This value is FFFFh for non fragmented > IPV4/6 UDP/TCP packets with no checksum error. > > RX csum offload can be disabled: > ethtool -K <dev> rx-checksum on|off > > - tx checksum offload support for IPv4/IPv6 TCP/UDP packets (J721E only). > TX csum HW offload can be enabled/disabled: > ethtool -K <dev> tx-checksum-ip-generic on|off > > - multiq and switch between round robin/prio modes for cppi tx queues by > using Netdev private flag "p0-rx-ptype-rrobin" to switch between > Round Robin and Fixed priority modes: > # ethtool --show-priv-flags eth0 > Private flags for eth0: > p0-rx-ptype-rrobin: on > # ethtool --set-priv-flags eth0 p0-rx-ptype-rrobin off > > Number of TX DMA channels can be changed using "ethtool -L eth0 tx <N>". > > - GRO support: the napi_gro_receive() and napi_complete_done() are used. > > Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx> > --- > drivers/net/ethernet/ti/Kconfig | 19 +- > 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/k3-udma-desc-pool.c | 126 ++ > drivers/net/ethernet/ti/k3-udma-desc-pool.h | 30 + I would rather loose the 'udma' from the name and API. It is more like CPPI5 descriptor pool than UDMA. UDMA is just happen to use CPPI5. Probably ti-cppi5-desc-pool? > 7 files changed, 3031 insertions(+), 2 deletions(-) > 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 > diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig > index 8a6ca16eee3b..89cec778cf2d 100644 > --- a/drivers/net/ethernet/ti/Kconfig > +++ b/drivers/net/ethernet/ti/Kconfig > @@ -6,7 +6,7 @@ > config NET_VENDOR_TI > bool "Texas Instruments (TI) devices" > default y > - depends on PCI || EISA || AR7 || ARCH_DAVINCI || ARCH_OMAP2PLUS || ARCH_KEYSTONE > + depends on PCI || EISA || AR7 || ARCH_DAVINCI || ARCH_OMAP2PLUS || ARCH_KEYSTONE || ARCH_K3 > ---help--- > If you have a network (Ethernet) card belonging to this class, say Y. > > @@ -31,7 +31,7 @@ config TI_DAVINCI_EMAC > > config TI_DAVINCI_MDIO > tristate "TI DaVinci MDIO Support" > - depends on ARCH_DAVINCI || ARCH_OMAP2PLUS || ARCH_KEYSTONE || COMPILE_TEST > + depends on ARCH_DAVINCI || ARCH_OMAP2PLUS || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST > select PHYLIB > ---help--- > This driver supports TI's DaVinci MDIO module. > @@ -95,6 +95,21 @@ config TI_CPTS_MOD > imply PTP_1588_CLOCK > default m > > +config TI_K3_AM65_CPSW_NUSS > + tristate "TI K3 AM654x/J721E CPSW Ethernet driver" > + depends on ARCH_K3 && OF && TI_K3_UDMA_GLUE_LAYER > + select TI_DAVINCI_MDIO > + imply PHY_TI_GMII_SEL > + help > + This driver supports TI K3 AM654/J721E CPSW2G Ethernet SubSystem. > + The two-port Gigabit Ethernet MAC (MCU_CPSW0) subsystem provides > + Ethernet packet communication for the device: One Ethernet port > + (port 1) with selectable RGMII and RMII interfaces and an internal > + Communications Port Programming Interface (CPPI) port (port 0). > + > + To compile this driver as a module, choose M here: the module > + will be called ti-am65-cpsw-nuss. > + > config TI_KEYSTONE_NETCP > tristate "TI Keystone NETCP Core Support" > select TI_DAVINCI_MDIO > diff --git a/drivers/net/ethernet/ti/Makefile b/drivers/net/ethernet/ti/Makefile > index ecf776ad8689..6362a9b0bb8a 100644 > --- a/drivers/net/ethernet/ti/Makefile > +++ b/drivers/net/ethernet/ti/Makefile > @@ -23,3 +23,6 @@ obj-$(CONFIG_TI_KEYSTONE_NETCP) += keystone_netcp.o > keystone_netcp-y := netcp_core.o cpsw_ale.o > obj-$(CONFIG_TI_KEYSTONE_NETCP_ETHSS) += keystone_netcp_ethss.o > keystone_netcp_ethss-y := netcp_ethss.o netcp_sgmii.o netcp_xgbepcsr.o cpsw_ale.o > + > +obj-$(CONFIG_TI_K3_AM65_CPSW_NUSS) += ti-am65-cpsw-nuss.o > +ti-am65-cpsw-nuss-y := am65-cpsw-nuss.o cpsw_sl.o am65-cpsw-ethtool.o cpsw_ale.o k3-udma-desc-pool.o Would not be better to have the desc-pool (silent) Kconfig selectable? The not yet upstream icssg-prueth also needs the same desc-pool library as cpsw. - Péter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
