Symbol: XCALWD_KEEPALIVE
usr/src/cmd/picl/plugins/sun4u/excalibur/envd/piclenvd.c
2162
(void) ioctl(xwd, XCALWD_KEEPALIVE);
usr/src/uts/sun4u/excalibur/io/xcalwd.c
463
case XCALWD_KEEPALIVE: