cxgb3 - MAC workaround update
Update the MAC workaround to deal with switches that do not
honor pause frames.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/cxgb3/xgmac.c b/drivers/net/cxgb3/xgmac.c
index c302b1a..1d1c391 100644
--- a/drivers/net/cxgb3/xgmac.c
+++ b/drivers/net/cxgb3/xgmac.c
@@ -437,12 +437,13 @@
struct mac_stats *s = &mac->stats;
if (which & MAC_DIRECTION_TX) {
- t3_write_reg(adap, A_XGM_TX_CTRL + oft, F_TXEN);
t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_CFG_CH0 + idx);
t3_write_reg(adap, A_TP_PIO_DATA, 0xc0ede401);
t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_MODE);
t3_set_reg_field(adap, A_TP_PIO_DATA, 1 << idx, 1 << idx);
+ t3_write_reg(adap, A_XGM_TX_CTRL + oft, F_TXEN);
+
t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_CNT_CH0 + idx);
mac->tx_mcnt = s->tx_frames;
mac->tx_tcnt = (G_TXDROPCNTCH0RCVD(t3_read_reg(adap,
@@ -454,6 +455,7 @@
mac->rx_xcnt = (G_TXSPI4SOPCNT(t3_read_reg(adap,
A_XGM_RX_SPI4_SOP_EOP_CNT +
oft)));
+ mac->rx_ocnt = s->rx_fifo_ovfl;
mac->txen = F_TXEN;
mac->toggle_cnt = 0;
}
@@ -464,24 +466,19 @@
int t3_mac_disable(struct cmac *mac, int which)
{
- int idx = macidx(mac);
struct adapter *adap = mac->adapter;
- int val;
if (which & MAC_DIRECTION_TX) {
t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, 0);
- t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_CFG_CH0 + idx);
- t3_write_reg(adap, A_TP_PIO_DATA, 0xc000001f);
- t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_MODE);
- t3_set_reg_field(adap, A_TP_PIO_DATA, 1 << idx, 1 << idx);
mac->txen = 0;
}
if (which & MAC_DIRECTION_RX) {
+ int val = F_MAC_RESET_;
+
t3_set_reg_field(mac->adapter, A_XGM_RESET_CTRL + mac->offset,
F_PCS_RESET_, 0);
msleep(100);
t3_write_reg(adap, A_XGM_RX_CTRL + mac->offset, 0);
- val = F_MAC_RESET_;
if (is_10G(adap))
val |= F_PCS_RESET_;
else if (uses_xaui(adap))
@@ -541,11 +538,14 @@
}
rxcheck:
- if (rx_mcnt != mac->rx_mcnt)
+ if (rx_mcnt != mac->rx_mcnt) {
rx_xcnt = (G_TXSPI4SOPCNT(t3_read_reg(adap,
A_XGM_RX_SPI4_SOP_EOP_CNT +
- mac->offset)));
- else
+ mac->offset))) +
+ (s->rx_fifo_ovfl -
+ mac->rx_ocnt);
+ mac->rx_ocnt = s->rx_fifo_ovfl;
+ } else
goto out;
if (mac->rx_mcnt != s->rx_frames && rx_xcnt == 0 &&