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Date: Tue, 24 Nov 2009 02:06:30 +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 13/17] sfc: Gather link state fields in struct efx_nic into
new struct efx_link_state
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
drivers/net/sfc/efx.c | 12 +++++++-----
drivers/net/sfc/ethtool.c | 4 ++--
drivers/net/sfc/falcon.c | 21 +++++++++++----------
drivers/net/sfc/falcon_boards.c | 2 +-
drivers/net/sfc/falcon_gmac.c | 13 +++++++------
drivers/net/sfc/falcon_xmac.c | 8 ++++----
drivers/net/sfc/net_driver.h | 26 +++++++++++++++++---------
drivers/net/sfc/qt202x_phy.c | 11 ++++++-----
drivers/net/sfc/selftest.c | 2 +-
drivers/net/sfc/tenxpress.c | 22 ++++++++++++----------
10 files changed, 68 insertions(+), 53 deletions(-)
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index b913211..ea31141 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -543,6 +543,8 @@ void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue, int delay)
*/
static void efx_link_status_changed(struct efx_nic *efx)
{
+ struct efx_link_state *link_state = &efx->link_state;
+
/* SFC Bug 5356: A net_dev notifier is registered, so we must ensure
* that no events are triggered between unregister_netdev() and the
* driver unloading. A more general condition is that NETDEV_CHANGE
@@ -555,19 +557,19 @@ static void efx_link_status_changed(struct efx_nic *efx)
return;
}
- if (efx->link_up != netif_carrier_ok(efx->net_dev)) {
+ if (link_state->up != netif_carrier_ok(efx->net_dev)) {
efx->n_link_state_changes++;
- if (efx->link_up)
+ if (link_state->up)
netif_carrier_on(efx->net_dev);
else
netif_carrier_off(efx->net_dev);
}
/* Status message for kernel log */
- if (efx->link_up) {
+ if (link_state->up) {
EFX_INFO(efx, "link up at %uMbps %s-duplex (MTU %d)%s\n",
- efx->link_speed, efx->link_fd ? "full" : "half",
+ link_state->speed, link_state->fd ? "full" : "half",
efx->net_dev->mtu,
(efx->promiscuous ? " [PROMISC]" : ""));
} else {
@@ -758,7 +760,7 @@ static void efx_fini_port(struct efx_nic *efx)
efx->phy_op->fini(efx);
efx->port_initialized = false;
- efx->link_up = false;
+ efx->link_state.up = false;
efx_link_status_changed(efx);
}
diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c
index bb41532..eb12f20 100644
--- a/drivers/net/sfc/ethtool.c
+++ b/drivers/net/sfc/ethtool.c
@@ -539,7 +539,7 @@ static u32 efx_ethtool_get_link(struct net_device *net_dev)
{
struct efx_nic *efx = netdev_priv(net_dev);
- return efx->link_up;
+ return efx->link_state.up;
}
static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
@@ -699,7 +699,7 @@ static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
if (EFX_WORKAROUND_11482(efx) && reset) {
if (falcon_rev(efx) >= FALCON_REV_B0) {
/* Recover by resetting the EM block */
- if (efx->link_up)
+ if (efx->link_state.up)
falcon_drain_tx_fifo(efx);
} else {
/* Schedule a reset to recover */
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index ff15b9d..6eee4b7 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1905,7 +1905,7 @@ static int falcon_reset_macs(struct efx_nic *efx)
/* If we've reset the EM block and the link is up, then
* we'll have to kick the XAUI link so the PHY can recover */
- if (efx->link_up && EFX_IS10G(efx) && EFX_WORKAROUND_5147(efx))
+ if (efx->link_state.up && EFX_IS10G(efx) && EFX_WORKAROUND_5147(efx))
falcon_reset_xaui(efx);
return 0;
@@ -1939,17 +1939,18 @@ void falcon_deconfigure_mac_wrapper(struct efx_nic *efx)
EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, 0);
efx_writeo(efx, ®, FR_AZ_RX_CFG);
- if (!efx->link_up)
+ if (!efx->link_state.up)
falcon_drain_tx_fifo(efx);
}
void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
{
+ struct efx_link_state *link_state = &efx->link_state;
efx_oword_t reg;
int link_speed;
bool tx_fc;
- switch (efx->link_speed) {
+ switch (link_state->speed) {
case 10000: link_speed = 3; break;
case 1000: link_speed = 2; break;
case 100: link_speed = 1; break;
@@ -1969,7 +1970,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
* discarded. */
if (falcon_rev(efx) >= FALCON_REV_B0) {
EFX_SET_OWORD_FIELD(reg, FRF_BB_TXFIFO_DRAIN_EN,
- !efx->link_up);
+ !link_state->up);
}
efx_writeo(efx, ®, FR_AB_MAC_CTRL);
@@ -1980,7 +1981,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
/* Transmission of pause frames when RX crosses the threshold is
* covered by RX_XOFF_MAC_EN and XM_TX_CFG_REG:XM_FCNTL.
* Action on receipt of pause frames is controller by XM_DIS_FCNTL */
- tx_fc = !!(efx->link_fc & EFX_FC_TX);
+ tx_fc = !!(efx->link_state.fc & EFX_FC_TX);
efx_reado(efx, ®, FR_AZ_RX_CFG);
EFX_SET_OWORD_FIELD(reg, FRF_AZ_RX_XOFF_MAC_EN, tx_fc);
@@ -2175,11 +2176,11 @@ int falcon_switch_mac(struct efx_nic *efx)
/* Internal loopbacks override the phy speed setting */
if (efx->loopback_mode == LOOPBACK_GMAC) {
- efx->link_speed = 1000;
- efx->link_fd = true;
+ efx->link_state.speed = 1000;
+ efx->link_state.fd = true;
} else if (LOOPBACK_INTERNAL(efx)) {
- efx->link_speed = 10000;
- efx->link_fd = true;
+ efx->link_state.speed = 10000;
+ efx->link_state.fd = true;
}
WARN_ON(!mutex_is_locked(&efx->mac_lock));
@@ -2752,7 +2753,7 @@ static int falcon_probe_nic_variant(struct efx_nic *efx)
}
/* Initial assumed speed */
- efx->link_speed = EFX_OWORD_FIELD(nic_stat, FRF_AB_STRAP_10G) ? 10000 : 1000;
+ efx->link_state.speed = EFX_OWORD_FIELD(nic_stat, FRF_AB_STRAP_10G) ? 10000 : 1000;
return 0;
}
diff --git a/drivers/net/sfc/falcon_boards.c b/drivers/net/sfc/falcon_boards.c
index cdf7a0d..333ccc1 100644
--- a/drivers/net/sfc/falcon_boards.c
+++ b/drivers/net/sfc/falcon_boards.c
@@ -85,7 +85,7 @@ static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
s32 alarms1, alarms2;
/* If link is up then do not monitor temperature */
- if (EFX_WORKAROUND_7884(efx) && efx->link_up)
+ if (EFX_WORKAROUND_7884(efx) && efx->link_state.up)
return 0;
alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
diff --git a/drivers/net/sfc/falcon_gmac.c b/drivers/net/sfc/falcon_gmac.c
index 8a1b80d..967f3fb 100644
--- a/drivers/net/sfc/falcon_gmac.c
+++ b/drivers/net/sfc/falcon_gmac.c
@@ -24,16 +24,17 @@
static void falcon_reconfigure_gmac(struct efx_nic *efx)
{
+ struct efx_link_state *link_state = &efx->link_state;
bool loopback, tx_fc, rx_fc, bytemode;
int if_mode;
unsigned int max_frame_len;
efx_oword_t reg;
/* Configuration register 1 */
- tx_fc = (efx->link_fc & EFX_FC_TX) || !efx->link_fd;
- rx_fc = !!(efx->link_fc & EFX_FC_RX);
+ tx_fc = (link_state->fc & EFX_FC_TX) || !link_state->fd;
+ rx_fc = !!(link_state->fc & EFX_FC_RX);
loopback = (efx->loopback_mode == LOOPBACK_GMAC);
- bytemode = (efx->link_speed == 1000);
+ bytemode = (link_state->speed == 1000);
EFX_POPULATE_OWORD_5(reg,
FRF_AB_GM_LOOP, loopback,
@@ -50,7 +51,7 @@ static void falcon_reconfigure_gmac(struct efx_nic *efx)
FRF_AB_GM_IF_MODE, if_mode,
FRF_AB_GM_PAD_CRC_EN, 1,
FRF_AB_GM_LEN_CHK, 1,
- FRF_AB_GM_FD, efx->link_fd,
+ FRF_AB_GM_FD, link_state->fd,
FRF_AB_GM_PAMBL_LEN, 0x7/*datasheet recommended */);
efx_writeo(efx, ®, FR_AB_GM_CFG2);
@@ -101,8 +102,8 @@ static void falcon_reconfigure_gmac(struct efx_nic *efx)
/* FIFO configuration register 5 */
efx_reado(efx, ®, FR_AB_GMF_CFG5);
EFX_SET_OWORD_FIELD(reg, FRF_AB_GMF_CFGBYTMODE, bytemode);
- EFX_SET_OWORD_FIELD(reg, FRF_AB_GMF_CFGHDPLX, !efx->link_fd);
- EFX_SET_OWORD_FIELD(reg, FRF_AB_GMF_HSTDRPLT64, !efx->link_fd);
+ EFX_SET_OWORD_FIELD(reg, FRF_AB_GMF_CFGHDPLX, !link_state->fd);
+ EFX_SET_OWORD_FIELD(reg, FRF_AB_GMF_HSTDRPLT64, !link_state->fd);
EFX_SET_OWORD_FIELD(reg, FRF_AB_GMF_HSTFLTRFRMDC_PAUSE, 0);
efx_writeo(efx, ®, FR_AB_GMF_CFG5);
udelay(10);
diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index 7e57b4a..69cb55f 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -89,7 +89,7 @@ static void falcon_mask_status_intr(struct efx_nic *efx, bool enable)
return;
/* We expect xgmii faults if the wireside link is up */
- if (!EFX_WORKAROUND_5147(efx) || !efx->link_up)
+ if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up)
return;
/* We can only use this interrupt to signal the negative edge of
@@ -132,7 +132,7 @@ bool falcon_xaui_link_ok(struct efx_nic *efx)
efx_writeo(efx, ®, FR_AB_XX_CORE_STAT);
/* If the link is up, then check the phy side of the xaui link */
- if (efx->link_up && link_ok)
+ if (efx->link_state.up && link_ok)
if (efx->phy_op->mmds & (1 << MDIO_MMD_PHYXS))
link_ok = efx_mdio_phyxgxs_lane_sync(efx);
@@ -143,7 +143,7 @@ static void falcon_reconfigure_xmac_core(struct efx_nic *efx)
{
unsigned int max_frame_len;
efx_oword_t reg;
- bool rx_fc = !!(efx->link_fc & EFX_FC_RX);
+ bool rx_fc = !!(efx->link_state.fc & EFX_FC_RX);
/* Configure MAC - cut-thru mode is hard wired on */
EFX_POPULATE_DWORD_3(reg,
@@ -356,7 +356,7 @@ static void falcon_xmac_irq(struct efx_nic *efx)
static void falcon_poll_xmac(struct efx_nic *efx)
{
- if (!EFX_WORKAROUND_5147(efx) || !efx->link_up || efx->mac_up)
+ if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up || efx->mac_up)
return;
falcon_mask_status_intr(efx, false);
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 55d45a7..f2df324 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -419,7 +419,7 @@ enum phy_type {
PHY_TYPE_MAX /* Insert any new items before this */
};
-#define EFX_IS10G(efx) ((efx)->link_speed == 10000)
+#define EFX_IS10G(efx) ((efx)->link_state.speed == 10000)
enum nic_state {
STATE_INIT = 0,
@@ -468,6 +468,20 @@ enum efx_mac_type {
};
/**
+ * struct efx_link_state - Current state of the link
+ * @up: Link is up
+ * @fd: Link is full-duplex
+ * @fc: Actual flow control flags
+ * @speed: Link speed (Mbps)
+ */
+struct efx_link_state {
+ bool up;
+ bool fd;
+ enum efx_fc_type fc;
+ unsigned int speed;
+};
+
+/**
* struct efx_mac_operations - Efx MAC operations table
* @reconfigure: Reconfigure MAC. Serialised by the mac_lock
* @update_stats: Update statistics
@@ -691,10 +705,7 @@ union efx_multicast_hash {
* @mdio: PHY MDIO interface
* @phy_mode: PHY operating mode. Serialised by @mac_lock.
* @mac_up: MAC link state
- * @link_up: Link status
- * @link_fd: Link is full duplex
- * @link_fc: Actualy flow control flags
- * @link_speed: Link speed (Mbps)
+ * @link_state: Current state of the link
* @n_link_state_changes: Number of times the link has changed state
* @promiscuous: Promiscuous flag. Protected by netif_tx_lock.
* @multicast_hash: Multicast hash table
@@ -780,10 +791,7 @@ struct efx_nic {
enum efx_phy_mode phy_mode;
bool mac_up;
- bool link_up;
- bool link_fd;
- enum efx_fc_type link_fc;
- unsigned int link_speed;
+ struct efx_link_state link_state;
unsigned int n_link_state_changes;
bool promiscuous;
diff --git a/drivers/net/sfc/qt202x_phy.c b/drivers/net/sfc/qt202x_phy.c
index 73bc5ad..8208ac0 100644
--- a/drivers/net/sfc/qt202x_phy.c
+++ b/drivers/net/sfc/qt202x_phy.c
@@ -182,13 +182,14 @@ static void qt202x_phy_poll(struct efx_nic *efx)
{
int link_up = qt202x_link_ok(efx);
/* Simulate a PHY event if link state has changed */
- if (link_up != efx->link_up)
+ if (link_up != efx->link_state.up)
falcon_sim_phy_event(efx);
}
static void qt202x_phy_reconfigure(struct efx_nic *efx)
{
struct qt202x_phy_data *phy_data = efx->phy_data;
+ struct efx_link_state *link_state = &efx->link_state;
if (efx->phy_type == PHY_TYPE_QT2025C) {
/* There are several different register bits which can
@@ -215,10 +216,10 @@ static void qt202x_phy_reconfigure(struct efx_nic *efx)
efx_mdio_phy_reconfigure(efx);
phy_data->phy_mode = efx->phy_mode;
- efx->link_up = qt202x_link_ok(efx);
- efx->link_speed = 10000;
- efx->link_fd = true;
- efx->link_fc = efx->wanted_fc;
+ link_state->up = qt202x_link_ok(efx);
+ link_state->speed = 10000;
+ link_state->fd = true;
+ link_state->fc = efx->wanted_fc;
}
static void qt202x_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 7a9386f..70eb5f1 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -614,7 +614,7 @@ static int efx_test_loopbacks(struct efx_nic *efx, struct efx_self_tests *tests,
/* We need both the phy and xaui links to be ok.
* rather than relying on the falcon_xmac irq/poll
* regime, just poll xaui directly */
- link_up = efx->link_up;
+ link_up = efx->link_state.up;
if (link_up && EFX_IS10G(efx) &&
!falcon_xaui_link_ok(efx))
link_up = false;
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index cb5e057..b001f38 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -503,6 +503,7 @@ static void tenxpress_low_power(struct efx_nic *efx)
static void tenxpress_phy_reconfigure(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data = efx->phy_data;
+ struct efx_link_state *link_state = &efx->link_state;
struct ethtool_cmd ecmd;
bool phy_mode_change, loop_reset;
@@ -545,37 +546,38 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx)
phy_data->phy_mode = efx->phy_mode;
if (efx->phy_type == PHY_TYPE_SFX7101) {
- efx->link_speed = 10000;
- efx->link_fd = true;
- efx->link_up = sfx7101_link_ok(efx);
+ link_state->speed = 10000;
+ link_state->fd = true;
+ link_state->up = sfx7101_link_ok(efx);
} else {
efx->phy_op->get_settings(efx, &ecmd);
- efx->link_speed = ecmd.speed;
- efx->link_fd = ecmd.duplex == DUPLEX_FULL;
- efx->link_up = sft9001_link_ok(efx, &ecmd);
+ link_state->speed = ecmd.speed;
+ link_state->fd = ecmd.duplex == DUPLEX_FULL;
+ link_state->up = sft9001_link_ok(efx, &ecmd);
}
- efx->link_fc = efx_mdio_get_pause(efx);
+ link_state->fc = efx_mdio_get_pause(efx);
}
/* Poll PHY for interrupt */
static void tenxpress_phy_poll(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data = efx->phy_data;
+ struct efx_link_state *link_state = &efx->link_state;
bool change = false;
if (efx->phy_type == PHY_TYPE_SFX7101) {
bool link_ok = sfx7101_link_ok(efx);
- if (link_ok != efx->link_up) {
+ if (link_ok != link_state->up) {
change = true;
} else {
unsigned int link_fc = efx_mdio_get_pause(efx);
- if (link_fc != efx->link_fc)
+ if (link_fc != link_state->fc)
change = true;
}
sfx7101_check_bad_lp(efx, link_ok);
} else if (efx->loopback_mode) {
bool link_ok = sft9001_link_ok(efx, NULL);
- if (link_ok != efx->link_up)
+ if (link_ok != link_state->up)
change = true;
} else {
int status = efx_mdio_read(efx, MDIO_MMD_PMAPMD,
--
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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