diff options
| author | Michael Albaugh <michael.albaugh@qlogic.com> | 2007-05-16 15:45:09 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-07-09 20:12:25 -0700 |
| commit | 82466f00ec6ef0a5ca7ea8991c731af2ec561c7d (patch) | |
| tree | 48fcc8f78e6df67130e8c70b160fea42aeff79ca /drivers/infiniband/hw/ipath/ipath_iba6110.c | |
| parent | a024291b367f98188f4da4a66a9f2f40a2163efb (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.c | 10 |
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). |