Commit c6aa6fb1 authored by Babu Moger's avatar Babu Moger Committed by Tim Gardner

ixgbevf: Change the relaxed order settings in VF driver for sparc

BugLink: http://bugs.launchpad.net/bugs/1616677

We noticed performance issues with VF interface on sparc compared
to PF. Setting the RX to IXGBE_DCA_RXCTRL_DATA_WRO_EN brings it
on far with PF. Also this matches to the default sparc setting in
PF driver.
Signed-off-by: default avatarBabu Moger <babu.moger@oracle.com>
Acked-by: default avatarSowmini Varadhan <sowmini.varadhan@oracle.com>
Tested-by: default avatarAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 33b0eb15)
Signed-off-by: default avatarTim Gardner <tim.gardner@canonical.com>
Acked-by: default avatarBrad Figg <brad.figg@canonical.com>
Acked-by: default avatarKamal Mostafa <kamal@canonical.com>
parent db6edd31
......@@ -1760,9 +1760,15 @@ static void ixgbevf_configure_rx_ring(struct ixgbevf_adapter *adapter,
IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(reg_idx),
ring->count * sizeof(union ixgbe_adv_rx_desc));
#ifndef CONFIG_SPARC
/* enable relaxed ordering */
IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(reg_idx),
IXGBE_DCA_RXCTRL_DESC_RRO_EN);
#else
IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(reg_idx),
IXGBE_DCA_RXCTRL_DESC_RRO_EN |
IXGBE_DCA_RXCTRL_DATA_WRO_EN);
#endif
/* reset head and tail pointers */
IXGBE_WRITE_REG(hw, IXGBE_VFRDH(reg_idx), 0);
......
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