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[SCSI] isci: export phy events via ->lldd_control_phy()

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Allow the sas-transport-class to update events for local phys via a new
PHY_FUNC_GET_EVENTS command to ->lldd_control_phy().  Fixup drivers that
are not prepared for new enum phy_func values, and unify
->lldd_control_phy() error codes.

These are the SAS defined phy events that are reported in a
smp-report-phy-error-log command:
 * /sys/class/sas_phy/<phyX>/invalid_dword_count
 * /sys/class/sas_phy/<phyX>/running_disparity_error_count
 * /sys/class/sas_phy/<phyX>/loss_of_dword_sync_count
 * /sys/class/sas_phy/<phyX>/phy_reset_problem_count

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams
2011-09-28 18:48:02 -07:00
committed by James Bottomley
parent cdd05f05b4
commit ac013ed1cb
6 changed files with 24 additions and 6 deletions
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11
drivers/scsi/isci/phy.c
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@@ -1313,6 +1313,17 @@ int isci_phy_control(struct asd_sas_phy *sas_phy,
ret = isci_port_perform_hard_reset(ihost, iport, iphy);
break;
case PHY_FUNC_GET_EVENTS: {
struct scu_link_layer_registers __iomem *r;
struct sas_phy *phy = sas_phy->phy;
r = iphy->link_layer_registers;
phy->running_disparity_error_count = readl(&r->running_disparity_error_count);
phy->loss_of_dword_sync_count = readl(&r->loss_of_sync_error_count);
phy->phy_reset_problem_count = readl(&r->phy_reset_problem_count);
phy->invalid_dword_count = readl(&r->invalid_dword_counter);
break;
}
default:
dev_dbg(&ihost->pdev->dev,