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If the start bit, PxCMD.ST, is cleared and nothing is in-flight then

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PxCI, PxSACT, PxCMD.CCS and PxCMD.CR should be 0.

Reviewed by:	grehan
This commit is contained in:
Tycho Nightingale 2014-11-03 12:55:31 +00:00
parent a0cc5254d9
commit 26bf96112b
1 changed files with 6 additions and 2 deletions
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8
usr.sbin/bhyve/pci_ahci.c
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@ -367,11 +367,15 @@ ahci_check_stopped(struct ahci_port *p)
{
/*
* If we are no longer processing the command list and nothing
* is in-flight, clear the running bit.
* is in-flight, clear the running bit, the current command
* slot, the command issue and active bits.
*/
if (!(p->cmd & AHCI_P_CMD_ST)) {
if (p->pending == 0)
if (p->pending == 0) {
p->cmd &= ~(AHCI_P_CMD_CR | AHCI_P_CMD_CCS_MASK);
p->ci = 0;
p->sact = 0;
}
}
}