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authorMichael Albaugh <michael.albaugh@qlogic.com>2007-05-16 15:45:09 -0700
committerRoland Dreier <rolandd@cisco.com>2007-07-09 20:12:25 -0700
commit82466f00ec6ef0a5ca7ea8991c731af2ec561c7d (patch)
tree48fcc8f78e6df67130e8c70b160fea42aeff79ca /drivers/infiniband/hw/ipath/ipath_iba6110.c
parenta024291b367f98188f4da4a66a9f2f40a2163efb (diff)
IB/ipath: Support blinking LEDs with an led_override file
When we want to find an InfiniPath HCA in a rack of nodes, it is often expeditious to blink the status LEDs via a userspace /sys file. A write-only led_override "file" is published per device. Writes to this file are interpreted as (string form) numbers, and the resulting value sent to ipath_set_led_override(). The upper eight bits are interpretted as a 4.4 fixed-point "frequency in Hertz", and the bottom two 4-bit values are alternately (D0..3, then D4..7) used by the board-specific LED-setting function to override the normal state. Signed-off-by: Michael Albaugh <michael.albaugh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_iba6110.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_iba6110.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_iba6110.c b/drivers/infiniband/hw/ipath/ipath_iba6110.c
index ba73dd0a06c..4372c6c50ff 100644
--- a/drivers/infiniband/hw/ipath/ipath_iba6110.c
+++ b/drivers/infiniband/hw/ipath/ipath_iba6110.c
@@ -1065,6 +1065,16 @@ static void ipath_setup_ht_setextled(struct ipath_devdata *dd,
if (ipath_diag_inuse)
return;
+ /* Allow override of LED display for, e.g. Locating system in rack */
+ if (dd->ipath_led_override) {
+ ltst = (dd->ipath_led_override & IPATH_LED_PHYS)
+ ? INFINIPATH_IBCS_LT_STATE_LINKUP
+ : INFINIPATH_IBCS_LT_STATE_DISABLED;
+ lst = (dd->ipath_led_override & IPATH_LED_LOG)
+ ? INFINIPATH_IBCS_L_STATE_ACTIVE
+ : INFINIPATH_IBCS_L_STATE_DOWN;
+ }
+
/*
* start by setting both LED control bits to off, then turn
* on the appropriate bit(s).