diff options
| author | Igor Russkikh <irusskikh@marvell.com> | 2020-10-05 18:39:38 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-06 06:16:01 -0700 |
| commit | e193c3ab8302908b1378fc0606be561e976d2532 (patch) | |
| tree | e09f7b39510d0f3808cb2e32a62306303e4a782a /drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c | |
| parent | c6db31ffe202c3120147e9f3455a4dbc90546d39 (diff) | |
net: atlantic: implement phy downshift feature
PHY downshift allows phy to try renegotiate if link is unstable
and can carry higher speed.
AQC devices has integrated PHY which is controlled by MAC firmware.
Thus, driver defines new ethtool callbacks to implement phy tunables
via netdev.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c index 93c06dfa6c55..09500a95380b 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c @@ -612,6 +612,27 @@ static u32 aq_fw2x_state2_get(struct aq_hw_s *self) return aq_hw_read_reg(self, HW_ATL_FW2X_MPI_STATE2_ADDR); } +static int aq_fw2x_set_downshift(struct aq_hw_s *self, u32 counter) +{ + int err = 0; + u32 mpi_opts; + u32 offset; + + offset = offsetof(struct hw_atl_utils_settings, downshift_retry_count); + err = hw_atl_write_fwsettings_dwords(self, offset, &counter, 1); + if (err) + return err; + + mpi_opts = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR); + if (counter) + mpi_opts |= HW_ATL_FW2X_CTRL_DOWNSHIFT; + else + mpi_opts &= ~HW_ATL_FW2X_CTRL_DOWNSHIFT; + aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_opts); + + return err; +} + static u32 aq_fw2x_get_link_capabilities(struct aq_hw_s *self) { int err = 0; @@ -692,6 +713,7 @@ const struct aq_fw_ops aq_fw_2x_ops = { .enable_ptp = aq_fw3x_enable_ptp, .led_control = aq_fw2x_led_control, .set_phyloopback = aq_fw2x_set_phyloopback, + .set_downshift = aq_fw2x_set_downshift, .adjust_ptp = aq_fw3x_adjust_ptp, .get_link_capabilities = aq_fw2x_get_link_capabilities, .send_macsec_req = aq_fw2x_send_macsec_req, |