diff mbox

[5/5] ixgbe: Disable flow control for XFI

Message ID 20170607213621.18256-5-anthony.l.nguyen@intel.com
State Accepted
Delegated to: Jeff Kirsher
Headers show

Commit Message

Tony Nguyen June 7, 2017, 9:36 p.m. UTC 
Flow control autonegotiation is not supported for XFI.  Make sure that
ixgbe_device_supports_autoneg_fc() returns false and
hw->fc.disable_fc_autoneg is set to true to avoid running the fc_autoneg
function for that device.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_common.c |  5 ++-
 drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c   | 57 ++++++++++++++-----------
 2 files changed, 35 insertions(+), 27 deletions(-)

Comments

Bowers, AndrewX June 12, 2017, 7:15 p.m. UTC | #1 
> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@osuosl.org] On
> Behalf Of Tony Nguyen
> Sent: Wednesday, June 7, 2017 2:36 PM
> To: intel-wired-lan@lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH 5/5] ixgbe: Disable flow control for XFI
> 
> Flow control autonegotiation is not supported for XFI.  Make sure that
> ixgbe_device_supports_autoneg_fc() returns false and
> hw->fc.disable_fc_autoneg is set to true to avoid running the fc_autoneg
> function for that device.
> 
> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
> ---
>  drivers/net/ethernet/intel/ixgbe/ixgbe_common.c |  5 ++-
>  drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c   | 57 ++++++++++++++------
> -----
>  2 files changed, 35 insertions(+), 27 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
diff mbox

Patch

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 40ae7db..2c19070 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -97,7 +97,10 @@  bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
 
 		break;
 	case ixgbe_media_type_backplane:
-		supported = true;
+		if (hw->device_id == IXGBE_DEV_ID_X550EM_X_XFI)
+			supported = false;
+		else
+			supported = true;
 		break;
 	case ixgbe_media_type_copper:
 		/* only some copper devices support flow control autoneg */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
index ba97685..4c8e545 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -2843,7 +2843,7 @@  static s32 ixgbe_setup_fc_x550em(struct ixgbe_hw *hw)
 {
 	bool pause, asm_dir;
 	u32 reg_val;
-	s32 rc;
+	s32 rc = 0;
 
 	/* Validate the requested mode */
 	if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
@@ -2886,32 +2886,37 @@  static s32 ixgbe_setup_fc_x550em(struct ixgbe_hw *hw)
 		return IXGBE_ERR_CONFIG;
 	}
 
-	if (hw->device_id != IXGBE_DEV_ID_X550EM_X_KR &&
-	    hw->device_id != IXGBE_DEV_ID_X550EM_A_KR &&
-	    hw->device_id != IXGBE_DEV_ID_X550EM_A_KR_L)
-		return 0;
-
-	rc = hw->mac.ops.read_iosf_sb_reg(hw,
-					  IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
-					  IXGBE_SB_IOSF_TARGET_KR_PHY,
-					  &reg_val);
-	if (rc)
-		return rc;
-
-	reg_val &= ~(IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
-		     IXGBE_KRM_AN_CNTL_1_ASM_PAUSE);
-	if (pause)
-		reg_val |= IXGBE_KRM_AN_CNTL_1_SYM_PAUSE;
-	if (asm_dir)
-		reg_val |= IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
-	rc = hw->mac.ops.write_iosf_sb_reg(hw,
-					   IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
-					   IXGBE_SB_IOSF_TARGET_KR_PHY,
-					   reg_val);
-
-	/* This device does not fully support AN. */
-	hw->fc.disable_fc_autoneg = true;
+	switch (hw->device_id) {
+	case IXGBE_DEV_ID_X550EM_X_KR:
+	case IXGBE_DEV_ID_X550EM_A_KR:
+	case IXGBE_DEV_ID_X550EM_A_KR_L:
+		rc = hw->mac.ops.read_iosf_sb_reg(hw,
+					    IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
+					    IXGBE_SB_IOSF_TARGET_KR_PHY,
+					    &reg_val);
+		if (rc)
+			return rc;
 
+		reg_val &= ~(IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
+			     IXGBE_KRM_AN_CNTL_1_ASM_PAUSE);
+		if (pause)
+			reg_val |= IXGBE_KRM_AN_CNTL_1_SYM_PAUSE;
+		if (asm_dir)
+			reg_val |= IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
+		rc = hw->mac.ops.write_iosf_sb_reg(hw,
+					    IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
+					    IXGBE_SB_IOSF_TARGET_KR_PHY,
+					    reg_val);
+
+		/* This device does not fully support AN. */
+		hw->fc.disable_fc_autoneg = true;
+		break;
+	case IXGBE_DEV_ID_X550EM_X_XFI:
+		hw->fc.disable_fc_autoneg = true;
+		break;
+	default:
+		break;
+	}
 	return rc;
 }