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After sending stop command to MAC, give hardware chance to drain

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active DMA operation.
This commit is contained in:
yongari 2008-10-25 03:06:47 +00:00
parent 33ba86e90c
commit 7a59a01ca5
1 changed files with 8 additions and 0 deletions
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8
sys/pci/if_rl.c
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@ -1834,6 +1834,14 @@ rl_stop(struct rl_softc *sc)
CSR_WRITE_1(sc, RL_COMMAND, 0x00);
CSR_WRITE_2(sc, RL_IMR, 0x0000);
for (i = 0; i < RL_TIMEOUT; i++) {
DELAY(10);
if ((CSR_READ_1(sc, RL_COMMAND) &
(RL_CMD_RX_ENB | RL_CMD_TX_ENB)) == 0)
break;
}
if (i == RL_TIMEOUT)
device_printf(sc->rl_dev, "Unable to stop Tx/Rx MAC\n");
/*
* Free the TX list buffers.