diff options
Diffstat (limited to 'sys/dev/ichwd/ichwd.h')
| -rw-r--r-- | sys/dev/ichwd/ichwd.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/dev/ichwd/ichwd.h b/sys/dev/ichwd/ichwd.h index c0a1141..442460b 100644 --- a/sys/dev/ichwd/ichwd.h +++ b/sys/dev/ichwd/ichwd.h @@ -199,6 +199,17 @@ struct ichwd_softc { #define TCO_TMR_HALT 0x0800 /* clear to enable WDT */ #define TCO_CNT_PRESERVE 0x0200 /* preserve these bits */ +/* + * Masks for the TCO timer value field in TCO_RLD. + * If the datasheets are to be believed, the minimum value actually varies + * from chipset to chipset - 4 for ICH5 and 2 for all other chipsets. + * I suspect this is a bug in the ICH5 datasheet and that the minimum is + * uniformly 2, but I'd rather err on the side of caution. + */ +#define TCO_RLD_TMR_MIN 0x0004 +#define TCO_RLD1_TMR_MAX 0x003f +#define TCO_RLD2_TMR_MAX 0x03ff + /* approximate length in nanoseconds of one WDT tick (about 0.6 sec) */ #define ICHWD_TICK 600000000 |
