diff mbox

[04/17] sfc: Stop masking out XGMII faults over reconfigures

Message ID 1272482874.2549.20.camel@achroite.uk.solarflarecom.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Ben Hutchings April 28, 2010, 7:27 p.m. UTC 
From: Steve Hodgson <shodgson@solarflare.com>

The aim of this code was to avoid a spurious XGMII fault over a MAC
reconfigure. It's less relevant now that the PHY reconfigure isn't
called from the MAC reconfigure.

After applying this patch, our link stress test passed 48 hours of
testing without ever resetting the PHY.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/sfc/falcon_xmac.c |   20 +++++---------------
 1 files changed, 5 insertions(+), 15 deletions(-)

Comments

David Miller April 28, 2010, 7:45 p.m. UTC | #1 
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Wed, 28 Apr 2010 20:27:54 +0100

> From: Steve Hodgson <shodgson@solarflare.com>
> 
> The aim of this code was to avoid a spurious XGMII fault over a MAC
> reconfigure. It's less relevant now that the PHY reconfigure isn't
> called from the MAC reconfigure.
> 
> After applying this patch, our link stress test passed 48 hours of
> testing without ever resetting the PHY.
> 
> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index 8ccab2c..3d65abf 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -85,14 +85,14 @@  int falcon_reset_xaui(struct efx_nic *efx)
 	return -ETIMEDOUT;
 }
 
-static void falcon_mask_status_intr(struct efx_nic *efx, bool enable)
+static void falcon_ack_status_intr(struct efx_nic *efx)
 {
 	efx_oword_t reg;
 
 	if ((efx_nic_rev(efx) != EFX_REV_FALCON_B0) || LOOPBACK_INTERNAL(efx))
 		return;
 
-	/* We expect xgmii faults if the wireside link is up */
+	/* We expect xgmii faults if the wireside link is down */
 	if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up)
 		return;
 
@@ -101,14 +101,7 @@  static void falcon_mask_status_intr(struct efx_nic *efx, bool enable)
 	if (efx->xmac_poll_required)
 		return;
 
-	/* Flush the ISR */
-	if (enable)
-		efx_reado(efx, &reg, FR_AB_XM_MGT_INT_MSK);
-
-	EFX_POPULATE_OWORD_2(reg,
-			     FRF_AB_XM_MSK_RMTFLT, !enable,
-			     FRF_AB_XM_MSK_LCLFLT, !enable);
-	efx_writeo(efx, &reg, FR_AB_XM_MGT_INT_MASK);
+	efx_reado(efx, &reg, FR_AB_XM_MGT_INT_MSK);
 }
 
 static bool falcon_xgxs_link_ok(struct efx_nic *efx)
@@ -283,15 +276,13 @@  static bool falcon_xmac_check_fault(struct efx_nic *efx)
 
 static int falcon_reconfigure_xmac(struct efx_nic *efx)
 {
-	falcon_mask_status_intr(efx, false);
-
 	falcon_reconfigure_xgxs_core(efx);
 	falcon_reconfigure_xmac_core(efx);
 
 	falcon_reconfigure_mac_wrapper(efx);
 
 	efx->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 5);
-	falcon_mask_status_intr(efx, true);
+	falcon_ack_status_intr(efx);
 
 	return 0;
 }
@@ -362,9 +353,8 @@  void falcon_poll_xmac(struct efx_nic *efx)
 	    !efx->xmac_poll_required)
 		return;
 
-	falcon_mask_status_intr(efx, false);
 	efx->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 1);
-	falcon_mask_status_intr(efx, true);
+	falcon_ack_status_intr(efx);
 }
 
 struct efx_mac_operations falcon_xmac_operations = {