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-rw-r--r--drivers/net/ibm_emac/ibm_emac_core.c38
-rw-r--r--drivers/net/ibm_emac/ibm_emac_core.h2
2 files changed, 31 insertions, 9 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac_core.c b/drivers/net/ibm_emac/ibm_emac_core.c
index eb7d6947871..1da8a66f91e 100644
--- a/drivers/net/ibm_emac/ibm_emac_core.c
+++ b/drivers/net/ibm_emac/ibm_emac_core.c
@@ -65,7 +65,7 @@
*/
#define DRV_NAME "emac"
-#define DRV_VERSION "3.53"
+#define DRV_VERSION "3.54"
#define DRV_DESC "PPC 4xx OCP EMAC driver"
MODULE_DESCRIPTION(DRV_DESC);
@@ -158,6 +158,14 @@ static inline void emac_report_timeout_error(struct ocp_enet_private *dev,
#define PHY_POLL_LINK_ON HZ
#define PHY_POLL_LINK_OFF (HZ / 5)
+/* Graceful stop timeouts in us.
+ * We should allow up to 1 frame time (full-duplex, ignoring collisions)
+ */
+#define STOP_TIMEOUT_10 1230
+#define STOP_TIMEOUT_100 124
+#define STOP_TIMEOUT_1000 13
+#define STOP_TIMEOUT_1000_JUMBO 73
+
/* Please, keep in sync with struct ibm_emac_stats/ibm_emac_error_stats */
static const char emac_stats_keys[EMAC_ETHTOOL_STATS_COUNT][ETH_GSTRING_LEN] = {
"rx_packets", "rx_bytes", "tx_packets", "tx_bytes", "rx_packets_csum",
@@ -222,10 +230,12 @@ static void emac_tx_disable(struct ocp_enet_private *dev)
r = in_be32(&p->mr0);
if (r & EMAC_MR0_TXE) {
- int n = 300;
+ int n = dev->stop_timeout;
out_be32(&p->mr0, r & ~EMAC_MR0_TXE);
- while (!(in_be32(&p->mr0) & EMAC_MR0_TXI) && n)
+ while (!(in_be32(&p->mr0) & EMAC_MR0_TXI) && n) {
+ udelay(1);
--n;
+ }
if (unlikely(!n))
emac_report_timeout_error(dev, "TX disable timeout");
}
@@ -248,9 +258,11 @@ static void emac_rx_enable(struct ocp_enet_private *dev)
if (!(r & EMAC_MR0_RXE)) {
if (unlikely(!(r & EMAC_MR0_RXI))) {
/* Wait if previous async disable is still in progress */
- int n = 100;
- while (!(r = in_be32(&p->mr0) & EMAC_MR0_RXI) && n)
+ int n = dev->stop_timeout;
+ while (!(r = in_be32(&p->mr0) & EMAC_MR0_RXI) && n) {
+ udelay(1);
--n;
+ }
if (unlikely(!n))
emac_report_timeout_error(dev,
"RX disable timeout");
@@ -273,10 +285,12 @@ static void emac_rx_disable(struct ocp_enet_private *dev)
r = in_be32(&p->mr0);
if (r & EMAC_MR0_RXE) {
- int n = 300;
+ int n = dev->stop_timeout;
out_be32(&p->mr0, r & ~EMAC_MR0_RXE);
- while (!(in_be32(&p->mr0) & EMAC_MR0_RXI) && n)
+ while (!(in_be32(&p->mr0) & EMAC_MR0_RXI) && n) {
+ udelay(1);
--n;
+ }
if (unlikely(!n))
emac_report_timeout_error(dev, "RX disable timeout");
}
@@ -395,6 +409,7 @@ static int emac_configure(struct ocp_enet_private *dev)
r = EMAC_MR1_BASE(emac_opb_mhz()) | EMAC_MR1_VLE | EMAC_MR1_IST;
if (dev->phy.duplex == DUPLEX_FULL)
r |= EMAC_MR1_FDE;
+ dev->stop_timeout = STOP_TIMEOUT_10;
switch (dev->phy.speed) {
case SPEED_1000:
if (emac_phy_gpcs(dev->phy.mode)) {
@@ -409,12 +424,16 @@ static int emac_configure(struct ocp_enet_private *dev)
r |= EMAC_MR1_MF_1000;
r |= EMAC_MR1_RFS_16K;
gige = 1;
-
- if (dev->ndev->mtu > ETH_DATA_LEN)
+
+ if (dev->ndev->mtu > ETH_DATA_LEN) {
r |= EMAC_MR1_JPSM;
+ dev->stop_timeout = STOP_TIMEOUT_1000_JUMBO;
+ } else
+ dev->stop_timeout = STOP_TIMEOUT_1000;
break;
case SPEED_100:
r |= EMAC_MR1_MF_100;
+ dev->stop_timeout = STOP_TIMEOUT_100;
/* Fall through */
default:
r |= EMAC_MR1_RFS_4K;
@@ -2048,6 +2067,7 @@ static int __init emac_probe(struct ocp_device *ocpdev)
dev->phy.duplex = DUPLEX_FULL;
dev->phy.autoneg = AUTONEG_DISABLE;
dev->phy.pause = dev->phy.asym_pause = 0;
+ dev->stop_timeout = STOP_TIMEOUT_100;
init_timer(&dev->link_timer);
dev->link_timer.function = emac_link_timer;
dev->link_timer.data = (unsigned long)dev;
diff --git a/drivers/net/ibm_emac/ibm_emac_core.h b/drivers/net/ibm_emac/ibm_emac_core.h
index e9b44d030ac..911abbaf471 100644
--- a/drivers/net/ibm_emac/ibm_emac_core.h
+++ b/drivers/net/ibm_emac/ibm_emac_core.h
@@ -189,6 +189,8 @@ struct ocp_enet_private {
struct timer_list link_timer;
int reset_failed;
+ int stop_timeout; /* in us */
+
struct ibm_emac_error_stats estats;
struct net_device_stats nstats;