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isci: Hard reset failure will link reset all phys in the port 

In the case where the hard reset process fails, each link in
the port is put through a link reset sequence.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jeff Skirvin 2011-06-20 14:09:26 -07:00 committed by Dan Williams
parent fd53660120
commit fd0527ab15
1 changed files with 17 additions and 5 deletions
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22
drivers/scsi/isci/port.c
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@ -1916,7 +1916,7 @@ int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *ipor
{ {
unsigned long flags; unsigned long flags;
enum sci_status status; enum sci_status status;
int ret = TMF_RESP_FUNC_COMPLETE; int idx, ret = TMF_RESP_FUNC_COMPLETE;
dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n", dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
__func__, iport); __func__, iport);
@ -1953,14 +1953,26 @@ int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *ipor
* the same as link failures on all phys in the port. * the same as link failures on all phys in the port.
*/ */
if (ret != TMF_RESP_FUNC_COMPLETE) { if (ret != TMF_RESP_FUNC_COMPLETE) {
dev_err(&ihost->pdev->dev, dev_err(&ihost->pdev->dev,
"%s: iport = %p; hard reset failed " "%s: iport = %p; hard reset failed "
"(0x%x) - sending link down to libsas for phy %p\n", "(0x%x) - driving explicit link fail for all phys\n",
__func__, iport, iport->hard_reset_status, iphy); __func__, iport, iport->hard_reset_status);
isci_port_link_down(ihost, iphy, iport); /* Down all phys in the port. */
spin_lock_irqsave(&ihost->scic_lock, flags);
for (idx = 0; idx < SCI_MAX_PHYS; ++idx) {
if (iport->sci.phy_table[idx] != NULL) {
scic_sds_phy_stop(
iport->sci.phy_table[idx]);
scic_sds_phy_start(
iport->sci.phy_table[idx]);
}
}
spin_unlock_irqrestore(&ihost->scic_lock, flags);
} }
return ret; return ret;
} }