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Commit 33b0eb15 authored by Babu Moger's avatar Babu Moger Committed by Jeff Kirsher
Browse files

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



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>
parent 45a88dfc

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -1760,9 +1760,15 @@ static void ixgbevf_configure_rx_ring(struct ixgbevf_adapter *adapter, 
	IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(reg_idx),

	IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(reg_idx),

			ring->count * sizeof(union ixgbe_adv_rx_desc));

			ring->count * sizeof(union ixgbe_adv_rx_desc));





#ifndef CONFIG_SPARC

	/* enable relaxed ordering */

	/* enable relaxed ordering */

	IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(reg_idx),

	IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(reg_idx),

			IXGBE_DCA_RXCTRL_DESC_RRO_EN);

			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 */

	/* reset head and tail pointers */

	IXGBE_WRITE_REG(hw, IXGBE_VFRDH(reg_idx), 0);

	IXGBE_WRITE_REG(hw, IXGBE_VFRDH(reg_idx), 0);