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Message-Id: <1372526600-15934-6-git-send-email-johannes@sipsolutions.net>
Date: Sat, 29 Jun 2013 19:23:17 +0200
From: Johannes Berg <johannes@...solutions.net>
To: netdev@...r.kernel.org
Subject: [PATCH 5/8] alx: separate link speed/duplex fields
As suggested by Ben Hutchings, use separate fields to track
current link speed and duplex setting.
Reported-by: Ben Hutchings <ben@...adent.org.uk>
Signed-off-by: Johannes Berg <johannes@...solutions.net>
---
drivers/net/ethernet/atheros/alx/ethtool.c | 31 ++-----
drivers/net/ethernet/atheros/alx/hw.c | 139 +++++++++++++----------------
drivers/net/ethernet/atheros/alx/hw.h | 24 ++++-
drivers/net/ethernet/atheros/alx/main.c | 37 ++++----
4 files changed, 106 insertions(+), 125 deletions(-)
diff --git a/drivers/net/ethernet/atheros/alx/ethtool.c b/drivers/net/ethernet/atheros/alx/ethtool.c
index 50a91d0..5e19e08 100644
--- a/drivers/net/ethernet/atheros/alx/ethtool.c
+++ b/drivers/net/ethernet/atheros/alx/ethtool.c
@@ -85,14 +85,8 @@ static int alx_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
}
}
- if (hw->link_speed != SPEED_UNKNOWN) {
- ethtool_cmd_speed_set(ecmd,
- hw->link_speed - hw->link_speed % 10);
- ecmd->duplex = hw->link_speed % 10;
- } else {
- ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
- ecmd->duplex = DUPLEX_UNKNOWN;
- }
+ ethtool_cmd_speed_set(ecmd, hw->link_speed);
+ ecmd->duplex = hw->duplex;
return 0;
}
@@ -110,24 +104,11 @@ static int alx_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
return -EINVAL;
adv_cfg = ecmd->advertising | ADVERTISED_Autoneg;
} else {
- int speed = ethtool_cmd_speed(ecmd);
-
- switch (speed + ecmd->duplex) {
- case SPEED_10 + DUPLEX_HALF:
- adv_cfg = ADVERTISED_10baseT_Half;
- break;
- case SPEED_10 + DUPLEX_FULL:
- adv_cfg = ADVERTISED_10baseT_Full;
- break;
- case SPEED_100 + DUPLEX_HALF:
- adv_cfg = ADVERTISED_100baseT_Half;
- break;
- case SPEED_100 + DUPLEX_FULL:
- adv_cfg = ADVERTISED_100baseT_Full;
- break;
- default:
+ adv_cfg = alx_speed_to_ethadv(ethtool_cmd_speed(ecmd),
+ ecmd->duplex);
+
+ if (!adv_cfg || adv_cfg == ADVERTISED_1000baseT_Full)
return -EINVAL;
- }
}
hw->adv_cfg = adv_cfg;
diff --git a/drivers/net/ethernet/atheros/alx/hw.c b/drivers/net/ethernet/atheros/alx/hw.c
index dc71cfb..aed48a7 100644
--- a/drivers/net/ethernet/atheros/alx/hw.c
+++ b/drivers/net/ethernet/atheros/alx/hw.c
@@ -624,12 +624,12 @@ void alx_start_mac(struct alx_hw *hw)
alx_write_mem32(hw, ALX_TXQ0, txq | ALX_TXQ0_EN);
mac = hw->rx_ctrl;
- if (hw->link_speed % 10 == DUPLEX_FULL)
+ if (hw->duplex == DUPLEX_FULL)
mac |= ALX_MAC_CTRL_FULLD;
else
mac &= ~ALX_MAC_CTRL_FULLD;
ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED,
- hw->link_speed >= SPEED_1000 ? ALX_MAC_CTRL_SPEED_1000 :
+ hw->link_speed == SPEED_1000 ? ALX_MAC_CTRL_SPEED_1000 :
ALX_MAC_CTRL_SPEED_10_100);
mac |= ALX_MAC_CTRL_TX_EN | ALX_MAC_CTRL_RX_EN;
hw->rx_ctrl = mac;
@@ -790,28 +790,22 @@ void alx_post_phy_link(struct alx_hw *hw)
u16 phy_val, len, agc;
u8 revid = alx_hw_revision(hw);
bool adj_th = revid == ALX_REV_B0;
- int speed;
-
- if (hw->link_speed == SPEED_UNKNOWN)
- speed = SPEED_UNKNOWN;
- else
- speed = hw->link_speed - hw->link_speed % 10;
if (revid != ALX_REV_B0 && !alx_is_rev_a(revid))
return;
/* 1000BT/AZ, wrong cable length */
- if (speed != SPEED_UNKNOWN) {
+ if (hw->link_speed != SPEED_UNKNOWN) {
alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL6,
&phy_val);
len = ALX_GET_FIELD(phy_val, ALX_CLDCTRL6_CAB_LEN);
alx_read_phy_dbg(hw, ALX_MIIDBG_AGC, &phy_val);
agc = ALX_GET_FIELD(phy_val, ALX_AGC_2_VGA);
- if ((speed == SPEED_1000 &&
+ if ((hw->link_speed == SPEED_1000 &&
(len > ALX_CLDCTRL6_CAB_LEN_SHORT1G ||
(len == 0 && agc > ALX_AGC_LONG1G_LIMT))) ||
- (speed == SPEED_100 &&
+ (hw->link_speed == SPEED_100 &&
(len > ALX_CLDCTRL6_CAB_LEN_SHORT100M ||
(len == 0 && agc > ALX_AGC_LONG100M_LIMT)))) {
alx_write_phy_dbg(hw, ALX_MIIDBG_AZ_ANADECT,
@@ -831,10 +825,10 @@ void alx_post_phy_link(struct alx_hw *hw)
/* threshold adjust */
if (adj_th && hw->lnk_patch) {
- if (speed == SPEED_100) {
+ if (hw->link_speed == SPEED_100) {
alx_write_phy_dbg(hw, ALX_MIIDBG_MSE16DB,
ALX_MSE16DB_UP);
- } else if (speed == SPEED_1000) {
+ } else if (hw->link_speed == SPEED_1000) {
/*
* Giga link threshold, raise the tolerance of
* noise 50%
@@ -869,7 +863,7 @@ void alx_post_phy_link(struct alx_hw *hw)
* 1. phy link must be established before calling this function
* 2. wol option (pattern,magic,link,etc.) is configed before call it.
*/
-int alx_pre_suspend(struct alx_hw *hw, int speed)
+int alx_pre_suspend(struct alx_hw *hw, int speed, u8 duplex)
{
u32 master, mac, phy, val;
int err = 0;
@@ -897,9 +891,9 @@ int alx_pre_suspend(struct alx_hw *hw, int speed)
mac |= ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_BRD_EN;
if (hw->sleep_ctrl & ALX_SLEEP_CIFS)
mac |= ALX_MAC_CTRL_TX_EN;
- if (speed % 10 == DUPLEX_FULL)
+ if (duplex == DUPLEX_FULL)
mac |= ALX_MAC_CTRL_FULLD;
- if (speed >= SPEED_1000)
+ if (speed == SPEED_1000)
ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED,
ALX_MAC_CTRL_SPEED_1000);
phy |= ALX_PHY_CTRL_DSPRST_OUT;
@@ -938,7 +932,7 @@ bool alx_phy_configured(struct alx_hw *hw)
return cfg == hw_cfg;
}
-int alx_get_phy_link(struct alx_hw *hw, int *speed)
+int alx_read_phy_link(struct alx_hw *hw)
{
struct pci_dev *pdev = hw->pdev;
u16 bmsr, giga;
@@ -953,7 +947,8 @@ int alx_get_phy_link(struct alx_hw *hw, int *speed)
return err;
if (!(bmsr & BMSR_LSTATUS)) {
- *speed = SPEED_UNKNOWN;
+ hw->link_speed = SPEED_UNKNOWN;
+ hw->duplex = DUPLEX_UNKNOWN;
return 0;
}
@@ -967,20 +962,20 @@ int alx_get_phy_link(struct alx_hw *hw, int *speed)
switch (giga & ALX_GIGA_PSSR_SPEED) {
case ALX_GIGA_PSSR_1000MBS:
- *speed = SPEED_1000;
+ hw->link_speed = SPEED_1000;
break;
case ALX_GIGA_PSSR_100MBS:
- *speed = SPEED_100;
+ hw->link_speed = SPEED_100;
break;
case ALX_GIGA_PSSR_10MBS:
- *speed = SPEED_10;
+ hw->link_speed = SPEED_10;
break;
default:
goto wrong_speed;
}
- *speed += (giga & ALX_GIGA_PSSR_DPLX) ? DUPLEX_FULL : DUPLEX_HALF;
- return 1;
+ hw->duplex = (giga & ALX_GIGA_PSSR_DPLX) ? DUPLEX_FULL : DUPLEX_HALF;
+ return 0;
wrong_speed:
dev_err(&pdev->dev, "invalid PHY speed/duplex: 0x%x\n", giga);
@@ -1126,81 +1121,67 @@ void alx_configure_basic(struct alx_hw *hw)
alx_write_mem32(hw, ALX_WRR, val);
}
-static inline u32 alx_speed_to_ethadv(int speed)
-{
- switch (speed) {
- case SPEED_1000 + DUPLEX_FULL:
- return ADVERTISED_1000baseT_Full;
- case SPEED_100 + DUPLEX_FULL:
- return ADVERTISED_100baseT_Full;
- case SPEED_100 + DUPLEX_HALF:
- return ADVERTISED_100baseT_Half;
- case SPEED_10 + DUPLEX_FULL:
- return ADVERTISED_10baseT_Full;
- case SPEED_10 + DUPLEX_HALF:
- return ADVERTISED_10baseT_Half;
- default:
- return 0;
- }
-}
-
-int alx_select_powersaving_speed(struct alx_hw *hw, int *speed)
+int alx_select_powersaving_speed(struct alx_hw *hw, int *speed, u8 *duplex)
{
- int i, err, spd;
+ int i, err;
u16 lpa;
- err = alx_get_phy_link(hw, &spd);
- if (err < 0)
+ err = alx_read_phy_link(hw);
+ if (err)
return err;
- if (spd == SPEED_UNKNOWN)
+ if (hw->link_speed == SPEED_UNKNOWN) {
+ *speed = SPEED_UNKNOWN;
+ *duplex = DUPLEX_UNKNOWN;
return 0;
+ }
err = alx_read_phy_reg(hw, MII_LPA, &lpa);
if (err)
return err;
if (!(lpa & LPA_LPACK)) {
- *speed = spd;
+ *speed = hw->link_speed;
return 0;
}
- if (lpa & LPA_10FULL)
- *speed = SPEED_10 + DUPLEX_FULL;
- else if (lpa & LPA_10HALF)
- *speed = SPEED_10 + DUPLEX_HALF;
- else if (lpa & LPA_100FULL)
- *speed = SPEED_100 + DUPLEX_FULL;
- else
- *speed = SPEED_100 + DUPLEX_HALF;
-
- if (*speed != spd) {
- err = alx_write_phy_reg(hw, ALX_MII_IER, 0);
- if (err)
- return err;
- err = alx_setup_speed_duplex(hw,
- alx_speed_to_ethadv(*speed) |
- ADVERTISED_Autoneg,
- ALX_FC_ANEG | ALX_FC_RX |
- ALX_FC_TX);
- if (err)
- return err;
+ if (lpa & LPA_10FULL) {
+ *speed = SPEED_10;
+ *duplex = DUPLEX_FULL;
+ } else if (lpa & LPA_10HALF) {
+ *speed = SPEED_10;
+ *duplex = DUPLEX_HALF;
+ } else if (lpa & LPA_100FULL) {
+ *speed = SPEED_100;
+ *duplex = DUPLEX_FULL;
+ } else {
+ *speed = SPEED_100;
+ *duplex = DUPLEX_HALF;
+ }
- /* wait for linkup */
- for (i = 0; i < ALX_MAX_SETUP_LNK_CYCLE; i++) {
- int speed2;
+ if (*speed == hw->link_speed && *duplex == hw->duplex)
+ return 0;
+ err = alx_write_phy_reg(hw, ALX_MII_IER, 0);
+ if (err)
+ return err;
+ err = alx_setup_speed_duplex(hw, alx_speed_to_ethadv(*speed, *duplex) |
+ ADVERTISED_Autoneg, ALX_FC_ANEG |
+ ALX_FC_RX | ALX_FC_TX);
+ if (err)
+ return err;
- msleep(100);
+ /* wait for linkup */
+ for (i = 0; i < ALX_MAX_SETUP_LNK_CYCLE; i++) {
+ msleep(100);
- err = alx_get_phy_link(hw, &speed2);
- if (err < 0)
- return err;
- if (speed2 != SPEED_UNKNOWN)
- break;
- }
- if (i == ALX_MAX_SETUP_LNK_CYCLE)
- return -ETIMEDOUT;
+ err = alx_read_phy_link(hw);
+ if (err < 0)
+ return err;
+ if (hw->link_speed != SPEED_UNKNOWN)
+ break;
}
+ if (i == ALX_MAX_SETUP_LNK_CYCLE)
+ return -ETIMEDOUT;
return 0;
}
diff --git a/drivers/net/ethernet/atheros/alx/hw.h b/drivers/net/ethernet/atheros/alx/hw.h
index 65e723d..a60e35c 100644
--- a/drivers/net/ethernet/atheros/alx/hw.h
+++ b/drivers/net/ethernet/atheros/alx/hw.h
@@ -412,10 +412,11 @@ struct alx_hw {
u32 smb_timer;
/* SPEED_* + DUPLEX_*, SPEED_UNKNOWN if link is down */
int link_speed;
+ u8 duplex;
/* auto-neg advertisement or force mode config */
- u32 adv_cfg;
u8 flowctrl;
+ u32 adv_cfg;
u32 sleep_ctrl;
@@ -478,12 +479,12 @@ void alx_reset_pcie(struct alx_hw *hw);
void alx_enable_aspm(struct alx_hw *hw, bool l0s_en, bool l1_en);
int alx_setup_speed_duplex(struct alx_hw *hw, u32 ethadv, u8 flowctrl);
void alx_post_phy_link(struct alx_hw *hw);
-int alx_pre_suspend(struct alx_hw *hw, int speed);
+int alx_pre_suspend(struct alx_hw *hw, int speed, u8 duplex);
int alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data);
int alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data);
int alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata);
int alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data);
-int alx_get_phy_link(struct alx_hw *hw, int *speed);
+int alx_read_phy_link(struct alx_hw *hw);
int alx_clear_phy_intr(struct alx_hw *hw);
int alx_config_wol(struct alx_hw *hw);
void alx_cfg_mac_flowcontrol(struct alx_hw *hw, u8 fc);
@@ -493,7 +494,22 @@ void alx_set_macaddr(struct alx_hw *hw, const u8 *addr);
bool alx_phy_configured(struct alx_hw *hw);
void alx_configure_basic(struct alx_hw *hw);
void alx_disable_rss(struct alx_hw *hw);
-int alx_select_powersaving_speed(struct alx_hw *hw, int *speed);
+int alx_select_powersaving_speed(struct alx_hw *hw, int *speed, u8 *duplex);
bool alx_get_phy_info(struct alx_hw *hw);
+static inline u32 alx_speed_to_ethadv(int speed, u8 duplex)
+{
+ if (speed == SPEED_1000 && duplex == DUPLEX_FULL)
+ return ADVERTISED_1000baseT_Full;
+ if (speed == SPEED_100 && duplex == DUPLEX_FULL)
+ return ADVERTISED_100baseT_Full;
+ if (speed == SPEED_100 && duplex== DUPLEX_HALF)
+ return ADVERTISED_100baseT_Half;
+ if (speed == SPEED_10 && duplex == DUPLEX_FULL)
+ return ADVERTISED_10baseT_Full;
+ if (speed == SPEED_10 && duplex == DUPLEX_HALF)
+ return ADVERTISED_10baseT_Half;
+ return 0;
+}
+
#endif
diff --git a/drivers/net/ethernet/atheros/alx/main.c b/drivers/net/ethernet/atheros/alx/main.c
index 418de8b..148b4b9 100644
--- a/drivers/net/ethernet/atheros/alx/main.c
+++ b/drivers/net/ethernet/atheros/alx/main.c
@@ -712,6 +712,7 @@ static int alx_init_sw(struct alx_priv *alx)
hw->dma_chnl = hw->max_dma_chnl;
hw->ith_tpd = alx->tx_ringsz / 3;
hw->link_speed = SPEED_UNKNOWN;
+ hw->duplex = DUPLEX_UNKNOWN;
hw->adv_cfg = ADVERTISED_Autoneg |
ADVERTISED_10baseT_Half |
ADVERTISED_10baseT_Full |
@@ -758,6 +759,7 @@ static void alx_halt(struct alx_priv *alx)
alx_netif_stop(alx);
hw->link_speed = SPEED_UNKNOWN;
+ hw->duplex = DUPLEX_UNKNOWN;
alx_reset_mac(hw);
@@ -869,18 +871,18 @@ static void __alx_stop(struct alx_priv *alx)
alx_free_rings(alx);
}
-static const char *alx_speed_desc(u16 speed)
+static const char *alx_speed_desc(struct alx_hw *hw)
{
- switch (speed) {
- case SPEED_1000 + DUPLEX_FULL:
+ switch (alx_speed_to_ethadv(hw->link_speed, hw->duplex)) {
+ case ADVERTISED_1000baseT_Full:
return "1 Gbps Full";
- case SPEED_100 + DUPLEX_FULL:
+ case ADVERTISED_100baseT_Full:
return "100 Mbps Full";
- case SPEED_100 + DUPLEX_HALF:
+ case ADVERTISED_100baseT_Half:
return "100 Mbps Half";
- case SPEED_10 + DUPLEX_FULL:
+ case ADVERTISED_10baseT_Full:
return "10 Mbps Full";
- case SPEED_10 + DUPLEX_HALF:
+ case ADVERTISED_10baseT_Half:
return "10 Mbps Half";
default:
return "Unknown speed";
@@ -891,7 +893,8 @@ static void alx_check_link(struct alx_priv *alx)
{
struct alx_hw *hw = &alx->hw;
unsigned long flags;
- int speed, old_speed;
+ int old_speed;
+ u8 old_duplex;
int err;
/* clear PHY internal interrupt status, otherwise the main
@@ -899,7 +902,9 @@ static void alx_check_link(struct alx_priv *alx)
*/
alx_clear_phy_intr(hw);
- err = alx_get_phy_link(hw, &speed);
+ old_speed = hw->link_speed;
+ old_duplex = hw->duplex;
+ err = alx_read_phy_link(hw);
if (err < 0)
goto reset;
@@ -908,15 +913,12 @@ static void alx_check_link(struct alx_priv *alx)
alx_write_mem32(hw, ALX_IMR, alx->int_mask);
spin_unlock_irqrestore(&alx->irq_lock, flags);
- old_speed = hw->link_speed;
-
- if (old_speed == speed)
+ if (old_speed == hw->link_speed)
return;
- hw->link_speed = speed;
- if (speed != SPEED_UNKNOWN) {
+ if (hw->link_speed != SPEED_UNKNOWN) {
netif_info(alx, link, alx->dev,
- "NIC Up: %s\n", alx_speed_desc(speed));
+ "NIC Up: %s\n", alx_speed_desc(hw));
alx_post_phy_link(hw);
alx_enable_aspm(hw, true, true);
alx_start_mac(hw);
@@ -965,6 +967,7 @@ static int __alx_shutdown(struct pci_dev *pdev, bool *wol_en)
struct net_device *netdev = alx->dev;
struct alx_hw *hw = &alx->hw;
int err, speed;
+ u8 duplex;
netif_device_detach(netdev);
@@ -977,13 +980,13 @@ static int __alx_shutdown(struct pci_dev *pdev, bool *wol_en)
return err;
#endif
- err = alx_select_powersaving_speed(hw, &speed);
+ err = alx_select_powersaving_speed(hw, &speed, &duplex);
if (err)
return err;
err = alx_clear_phy_intr(hw);
if (err)
return err;
- err = alx_pre_suspend(hw, speed);
+ err = alx_pre_suspend(hw, speed, duplex);
if (err)
return err;
err = alx_config_wol(hw);
--
1.8.0
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