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Message-ID: <20090130034908.GE15266@solarflare.com>
Date: Fri, 30 Jan 2009 03:49:09 +0000
From: Ben Hutchings <bhutchings@...arflare.com>
To: David Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org, linux-net-drivers@...arflare.com
Subject: [PATCH 03/11] sfc: SFT9001: Fix speed reporting in 1G PHY loopback
From: Steve Hodgson <shodgson@...arflare.com>
Instead of disabling AN in loopback, just prevent restarting AN and
override the speed in sft9001_get_settings().
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
drivers/net/sfc/mdio_10g.c | 4 ++++
drivers/net/sfc/tenxpress.c | 27 +++++++++------------------
drivers/net/sfc/workarounds.h | 5 +++++
3 files changed, 18 insertions(+), 18 deletions(-)
diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c
index f6a1642..7f09ab5 100644
--- a/drivers/net/sfc/mdio_10g.c
+++ b/drivers/net/sfc/mdio_10g.c
@@ -15,6 +15,7 @@
#include "net_driver.h"
#include "mdio_10g.h"
#include "boards.h"
+#include "workarounds.h"
int mdio_clause45_reset_mmd(struct efx_nic *port, int mmd,
int spins, int spintime)
@@ -517,6 +518,9 @@ int mdio_clause45_set_settings(struct efx_nic *efx,
reg |= BMCR_ANENABLE | BMCR_ANRESTART;
else
reg &= ~BMCR_ANENABLE;
+ if (EFX_WORKAROUND_15195(efx)
+ && LOOPBACK_MASK(efx) & efx->phy_op->loopbacks)
+ reg &= ~BMCR_ANRESTART;
if (xnp)
reg |= 1 << MDIO_AN_CTRL_XNP_LBN;
else
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index 80c8d6e..bc2833f 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -511,7 +511,7 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data = efx->phy_data;
struct ethtool_cmd ecmd;
- bool phy_mode_change, loop_reset, loop_toggle, loopback;
+ bool phy_mode_change, loop_reset;
if (efx->phy_mode & (PHY_MODE_OFF | PHY_MODE_SPECIAL)) {
phy_data->phy_mode = efx->phy_mode;
@@ -522,12 +522,10 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx)
phy_mode_change = (efx->phy_mode == PHY_MODE_NORMAL &&
phy_data->phy_mode != PHY_MODE_NORMAL);
- loopback = LOOPBACK_MASK(efx) & efx->phy_op->loopbacks;
- loop_toggle = LOOPBACK_CHANGED(phy_data, efx, efx->phy_op->loopbacks);
loop_reset = (LOOPBACK_OUT_OF(phy_data, efx, efx->phy_op->loopbacks) ||
LOOPBACK_CHANGED(phy_data, efx, 1 << LOOPBACK_GPHY));
- if (loop_reset || loop_toggle || loopback || phy_mode_change) {
+ if (loop_reset || phy_mode_change) {
int rc;
efx->phy_op->get_settings(efx, &ecmd);
@@ -542,20 +540,6 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx)
falcon_reset_xaui(efx);
}
- if (efx->phy_type != PHY_TYPE_SFX7101) {
- /* Only change autoneg once, on coming out or
- * going into loopback */
- if (loop_toggle)
- ecmd.autoneg = !loopback;
- if (loopback) {
- ecmd.duplex = DUPLEX_FULL;
- if (efx->loopback_mode == LOOPBACK_GPHY)
- ecmd.speed = SPEED_1000;
- else
- ecmd.speed = SPEED_10000;
- }
- }
-
rc = efx->phy_op->set_settings(efx, &ecmd);
WARN_ON(rc);
}
@@ -813,6 +797,13 @@ static void sft9001_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
ecmd->duplex = (reg & (1 << GPHY_DUPLEX_LBN) ?
DUPLEX_FULL : DUPLEX_HALF);
}
+
+ /* In loopback, the PHY automatically brings up the correct interface,
+ * but doesn't advertise the correct speed. So override it */
+ if (efx->loopback_mode == LOOPBACK_GPHY)
+ ecmd->speed = SPEED_1000;
+ else if (LOOPBACK_MASK(efx) & SFT9001_LOOPBACKS)
+ ecmd->speed = SPEED_10000;
}
static int sft9001_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
diff --git a/drivers/net/sfc/workarounds.h b/drivers/net/sfc/workarounds.h
index 797a0cf..420fe15 100644
--- a/drivers/net/sfc/workarounds.h
+++ b/drivers/net/sfc/workarounds.h
@@ -19,6 +19,8 @@
#define EFX_WORKAROUND_FALCON_A(efx) (falcon_rev(efx) <= FALCON_REV_A1)
#define EFX_WORKAROUND_10G(efx) EFX_IS10G(efx)
#define EFX_WORKAROUND_SFT9001A(efx) ((efx)->phy_type == PHY_TYPE_SFT9001A)
+#define EFX_WORKAROUND_SFT9001(efx) ((efx)->phy_type == PHY_TYPE_SFT9001A || \
+ (efx)->phy_type == PHY_TYPE_SFT9001B)
/* XAUI resets if link not detected */
#define EFX_WORKAROUND_5147 EFX_WORKAROUND_ALWAYS
@@ -56,4 +58,7 @@
/* Need to keep AN enabled */
#define EFX_WORKAROUND_13963 EFX_WORKAROUND_SFT9001A
+/* Don't restart AN in near-side loopback */
+#define EFX_WORKAROUND_15195 EFX_WORKAROUND_SFT9001
+
#endif /* EFX_WORKAROUNDS_H */
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
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