| Message ID | 20210429084636.24752-1-michael.wei.hong.sit@intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Introducing support for DWC xpcs Energy Efficient Ethernet | expand |
From: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com> Date: Thu, 29 Apr 2021 16:46:34 +0800 > The goal of this patch set is to enable EEE in the xpcs so that when > EEE is enabled, the MAC-->xpcs-->PHY have all the EEE related > configurations enabled. > > Patch 1 adds the functions to enable EEE in the xpcs and sets it to > transparent mode. > Patch 2 adds the callbacks to configure the xpcs EEE mode. net-next is closed, please resubit this when it opensd back up. Thank you.
The goal of this patch set is to enable EEE in the xpcs so that when EEE is enabled, the MAC-->xpcs-->PHY have all the EEE related configurations enabled. Patch 1 adds the functions to enable EEE in the xpcs and sets it to transparent mode. Patch 2 adds the callbacks to configure the xpcs EEE mode. The results are tested by checking the lpi counters of the tx and rx path of the interface. When EEE is enabled, the lpi counters should increament as it enters and exits lpi states. host@EHL$ ethtool --show-eee enp0s30f4 EEE Settings for enp0s30f4: EEE status: disabled Tx LPI: disabled Supported EEE link modes: 100baseT/Full 1000baseT/Full Advertised EEE link modes: Not reported Link partner advertised EEE link modes: 100baseT/Full 1000baseT/Full host@EHL$ ethtool -S enp0s30f4 | grep lpi irq_tx_path_in_lpi_mode_n: 0 irq_tx_path_exit_lpi_mode_n: 0 irq_rx_path_in_lpi_mode_n: 0 irq_rx_path_exit_lpi_mode_n: 0 host@EHL$ ethtool --set-eee enp0s30f4 eee on host@EHL$ [ 110.265154] intel-eth-pci 0000:00:1e.4 enp0s30f4: Link is Down [ 112.315155] intel-eth-pci 0000:00:1e.4 enp0s30f4: Link is Up - 1Gbps/Full - flow control off [ 112.324612] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s30f4: link becomes ready host@EHL$ ethtool --show-eee enp0s30f4 EEE Settings for enp0s30f4: EEE status: enabled - active Tx LPI: 1000000 (us) Supported EEE link modes: 100baseT/Full 1000baseT/Full Advertised EEE link modes: 100baseT/Full 1000baseT/Full Link partner advertised EEE link modes: 100baseT/Full 1000baseT/Full host@EHL$ ethtool -S enp0s30f4 | grep lpi irq_tx_path_in_lpi_mode_n: 6 irq_tx_path_exit_lpi_mode_n: 5 irq_rx_path_in_lpi_mode_n: 7 irq_rx_path_exit_lpi_mode_n: 6 host@EHL$ ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.02 ms 64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.510 ms 64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.489 ms 64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.484 ms 64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.504 ms 64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=0.466 ms 64 bytes from 192.168.1.1: icmp_seq=7 ttl=64 time=0.529 ms 64 bytes from 192.168.1.1: icmp_seq=8 ttl=64 time=0.519 ms 64 bytes from 192.168.1.1: icmp_seq=9 ttl=64 time=0.518 ms 64 bytes from 192.168.1.1: icmp_seq=10 ttl=64 time=0.501 ms --- 192.168.1.1 ping statistics --- 10 packets transmitted, 10 received, 0% packet loss, time 9216ms rtt min/avg/max/mdev = 0.466/0.553/1.018/0.155 ms host@EHL$ ethtool -S enp0s30f4 | grep lpi irq_tx_path_in_lpi_mode_n: 22 irq_tx_path_exit_lpi_mode_n: 21 irq_rx_path_in_lpi_mode_n: 21 irq_rx_path_exit_lpi_mode_n: 20 Michael Sit Wei Hong (2): net: pcs: Introducing support for DWC xpcs Energy Efficient Ethernet net: stmmac: Add callbacks for DWC xpcs Energy Efficient Ethernet .../net/ethernet/stmicro/stmmac/dwmac-intel.c | 11 ++++ drivers/net/ethernet/stmicro/stmmac/hwif.h | 2 + .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 6 +++ drivers/net/pcs/pcs-xpcs.c | 51 +++++++++++++++++++ include/linux/pcs/pcs-xpcs.h | 2 + include/linux/stmmac.h | 1 + 6 files changed, 73 insertions(+)