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-rw-r--r--drivers/net/smsc911x.c24
-rw-r--r--drivers/net/smsc9420.c24
-rw-r--r--drivers/net/tg3.c24
-rw-r--r--drivers/net/usb/smsc95xx.c24
-rw-r--r--include/linux/mii.h29
5 files changed, 33 insertions, 92 deletions
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
index ae327166f97..fa28542b47d 100644
--- a/drivers/net/smsc911x.c
+++ b/drivers/net/smsc911x.c
@@ -642,28 +642,6 @@ static int smsc911x_phy_loopbacktest(struct net_device *dev)
}
#endif /* USE_PHY_WORK_AROUND */
-static u8 smsc95xx_resolve_flowctrl_fulldplx(u16 lcladv, u16 rmtadv)
-{
- u8 cap = 0;
-
- if (lcladv & ADVERTISE_PAUSE_CAP) {
- if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
- else if (rmtadv & LPA_PAUSE_ASYM)
- cap = FLOW_CTRL_RX;
- } else {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
- }
- } else if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM))
- cap = FLOW_CTRL_TX;
- }
-
- return cap;
-}
-
static void smsc911x_phy_update_flowcontrol(struct smsc911x_data *pdata)
{
struct phy_device *phy_dev = pdata->phy_dev;
@@ -674,7 +652,7 @@ static void smsc911x_phy_update_flowcontrol(struct smsc911x_data *pdata)
if (phy_dev->duplex == DUPLEX_FULL) {
u16 lcladv = phy_read(phy_dev, MII_ADVERTISE);
u16 rmtadv = phy_read(phy_dev, MII_LPA);
- u8 cap = smsc95xx_resolve_flowctrl_fulldplx(lcladv, rmtadv);
+ u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
if (cap & FLOW_CTRL_RX)
flow = 0xFFFF0002;
diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c
index bc9879d5f28..940220f6092 100644
--- a/drivers/net/smsc9420.c
+++ b/drivers/net/smsc9420.c
@@ -1080,28 +1080,6 @@ static void smsc9420_set_multicast_list(struct net_device *dev)
smsc9420_pci_flush_write(pd);
}
-static u8 smsc9420_resolve_flowctrl_fulldplx(u16 lcladv, u16 rmtadv)
-{
- u8 cap = 0;
-
- if (lcladv & ADVERTISE_PAUSE_CAP) {
- if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
- else if (rmtadv & LPA_PAUSE_ASYM)
- cap = FLOW_CTRL_RX;
- } else {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
- }
- } else if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM))
- cap = FLOW_CTRL_TX;
- }
-
- return cap;
-}
-
static void smsc9420_phy_update_flowcontrol(struct smsc9420_pdata *pd)
{
struct phy_device *phy_dev = pd->phy_dev;
@@ -1110,7 +1088,7 @@ static void smsc9420_phy_update_flowcontrol(struct smsc9420_pdata *pd)
if (phy_dev->duplex == DUPLEX_FULL) {
u16 lcladv = phy_read(phy_dev, MII_ADVERTISE);
u16 rmtadv = phy_read(phy_dev, MII_LPA);
- u8 cap = smsc9420_resolve_flowctrl_fulldplx(lcladv, rmtadv);
+ u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
if (cap & FLOW_CTRL_RX)
flow = 0xFFFF0002;
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f353f69caeb..06bd2f4eee6 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1227,28 +1227,6 @@ static u16 tg3_advert_flowctrl_1000X(u8 flow_ctrl)
return miireg;
}
-static u8 tg3_resolve_flowctrl_1000T(u16 lcladv, u16 rmtadv)
-{
- u8 cap = 0;
-
- if (lcladv & ADVERTISE_PAUSE_CAP) {
- if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = TG3_FLOW_CTRL_TX | TG3_FLOW_CTRL_RX;
- else if (rmtadv & LPA_PAUSE_ASYM)
- cap = TG3_FLOW_CTRL_RX;
- } else {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = TG3_FLOW_CTRL_TX | TG3_FLOW_CTRL_RX;
- }
- } else if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM))
- cap = TG3_FLOW_CTRL_TX;
- }
-
- return cap;
-}
-
static u8 tg3_resolve_flowctrl_1000X(u16 lcladv, u16 rmtadv)
{
u8 cap = 0;
@@ -1288,7 +1266,7 @@ static void tg3_setup_flow_control(struct tg3 *tp, u32 lcladv, u32 rmtadv)
if (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES)
flowctrl = tg3_resolve_flowctrl_1000X(lcladv, rmtadv);
else
- flowctrl = tg3_resolve_flowctrl_1000T(lcladv, rmtadv);
+ flowctrl = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
} else
flowctrl = tp->link_config.flowctrl;
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index ee2eac3047b..fed22ffedd5 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -435,28 +435,6 @@ static void smsc95xx_set_multicast(struct net_device *netdev)
smsc95xx_write_reg_async(dev, MAC_CR, &pdata->mac_cr);
}
-static u8 smsc95xx_resolve_flowctrl_fulldplx(u16 lcladv, u16 rmtadv)
-{
- u8 cap = 0;
-
- if (lcladv & ADVERTISE_PAUSE_CAP) {
- if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
- else if (rmtadv & LPA_PAUSE_ASYM)
- cap = FLOW_CTRL_RX;
- } else {
- if (rmtadv & LPA_PAUSE_CAP)
- cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
- }
- } else if (lcladv & ADVERTISE_PAUSE_ASYM) {
- if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM))
- cap = FLOW_CTRL_TX;
- }
-
- return cap;
-}
-
static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
u16 lcladv, u16 rmtadv)
{
@@ -469,7 +447,7 @@ static void smsc95xx_phy_update_flowcontrol(struct usbnet *dev, u8 duplex,
}
if (duplex == DUPLEX_FULL) {
- u8 cap = smsc95xx_resolve_flowctrl_fulldplx(lcladv, rmtadv);
+ u8 cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);
if (cap & FLOW_CTRL_RX)
flow = 0xFFFF0002;
diff --git a/include/linux/mii.h b/include/linux/mii.h
index 4a376e0816f..ad748588faf 100644
--- a/include/linux/mii.h
+++ b/include/linux/mii.h
@@ -239,5 +239,34 @@ static inline unsigned int mii_duplex (unsigned int duplex_lock,
return 0;
}
+/**
+ * mii_resolve_flowctrl_fdx
+ * @lcladv: value of MII ADVERTISE register
+ * @rmtadv: value of MII LPA register
+ *
+ * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
+ */
+static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
+{
+ u8 cap = 0;
+
+ if (lcladv & ADVERTISE_PAUSE_CAP) {
+ if (lcladv & ADVERTISE_PAUSE_ASYM) {
+ if (rmtadv & LPA_PAUSE_CAP)
+ cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
+ else if (rmtadv & LPA_PAUSE_ASYM)
+ cap = FLOW_CTRL_RX;
+ } else {
+ if (rmtadv & LPA_PAUSE_CAP)
+ cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
+ }
+ } else if (lcladv & ADVERTISE_PAUSE_ASYM) {
+ if ((rmtadv & LPA_PAUSE_CAP) && (rmtadv & LPA_PAUSE_ASYM))
+ cap = FLOW_CTRL_TX;
+ }
+
+ return cap;
+}
+
#endif /* __KERNEL__ */
#endif /* __LINUX_MII_H__ */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 20:52:29 +0000