d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Bug fix from Chelsio which addresses the issue of the device resetting

Browse Source 
when it sees only received packets.  In some cases where a device only
recieves data it mistakenly thinks that its transmitting side is broken
and resets the device.

Obtained from:	Chelsio Inc.
MFC after:	3 days
This commit is contained in:
George V. Neville-Neil 2008-12-02 15:42:47 +00:00
parent 41fbf4374b
commit c9c0c99f30
1 changed files with 2 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
sys/dev/cxgb/common/cxgb_xgmac.c
View File

@ -633,20 +633,15 @@ int t3b2_mac_watchdog_task(struct cmac *mac)
adapter_t *adap = mac->adapter;
struct mac_stats *s = &mac->stats;
unsigned int tx_mcnt = (unsigned int)s->tx_frames;
unsigned int rx_mcnt = (unsigned int)s->rx_frames;
unsigned int rx_xcnt;
if (mac->multiport) {
tx_mcnt = t3_read_reg(adap, A_XGM_STAT_TX_FRAME_LOW);
rx_mcnt = t3_read_reg(adap, A_XGM_STAT_RX_FRAMES_LOW);
} else {
tx_mcnt = (unsigned int)s->tx_frames;
rx_mcnt = (unsigned int)s->rx_frames;
}
status = 0;
tx_xcnt = 1; /* By default tx_xcnt is making progress*/
tx_tcnt = mac->tx_tcnt; /* If tx_mcnt is progressing ignore tx_tcnt*/
rx_xcnt = 1; /* By default rx_xcnt is making progress*/
if (tx_mcnt == mac->tx_mcnt && mac->rx_pause == s->rx_pause) {
tx_xcnt = (G_TXSPI4SOPCNT(t3_read_reg(adap,
A_XGM_TX_SPI4_SOP_EOP_CNT +
@ -657,11 +652,11 @@ int t3b2_mac_watchdog_task(struct cmac *mac)
tx_tcnt = (G_TXDROPCNTCH0RCVD(t3_read_reg(adap,
A_TP_PIO_DATA)));
} else {
goto rxcheck;
goto out;
}
} else {
mac->toggle_cnt = 0;
goto rxcheck;
goto out;
}
if ((tx_tcnt != mac->tx_tcnt) && (mac->tx_xcnt == 0)) {
@ -674,22 +669,6 @@ int t3b2_mac_watchdog_task(struct cmac *mac)
}
} else {
mac->toggle_cnt = 0;
goto rxcheck;
}
rxcheck:
if (rx_mcnt != mac->rx_mcnt) {
rx_xcnt = (G_TXSPI4SOPCNT(t3_read_reg(adap,
A_XGM_RX_SPI4_SOP_EOP_CNT +
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 && mac->rx_xcnt == 0) {
if (!mac->multiport)
status = 2;
goto out;
}
@ -697,8 +676,6 @@ int t3b2_mac_watchdog_task(struct cmac *mac)
mac->tx_tcnt = tx_tcnt;
mac->tx_xcnt = tx_xcnt;
mac->tx_mcnt = s->tx_frames;
mac->rx_xcnt = rx_xcnt;
mac->rx_mcnt = s->rx_frames;
mac->rx_pause = s->rx_pause;
if (status == 1) {
t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, 0);