diff options
| author | peter <peter@FreeBSD.org> | 2002-03-19 11:03:48 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 2002-03-19 11:03:48 +0000 |
| commit | 1d9448da3b310e8a36d3ea46907b7c000ad7056f (patch) | |
| tree | a8df10b455b6077a0a2f556509445b6a80f03444 /sys/ia64 | |
| parent | 83444279ceb3fe466a6e6bcfb60d57a4ee6bcc3a (diff) | |
| download | FreeBSD-src-1d9448da3b310e8a36d3ea46907b7c000ad7056f.zip FreeBSD-src-1d9448da3b310e8a36d3ea46907b7c000ad7056f.tar.gz | |
Turn off the ia64 ITC timecounter when SMP is present since it has the
same problem as the TSC on the x86 - ie: it is not synchronized.
#if 0 out some unused functions, ia64 doesn't calibrate clocks yet.
Diffstat (limited to 'sys/ia64')
| -rw-r--r-- | sys/ia64/ia64/clock.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/ia64/ia64/clock.c b/sys/ia64/ia64/clock.c index 95541fb..cf48d36 100644 --- a/sys/ia64/ia64/clock.c +++ b/sys/ia64/ia64/clock.c @@ -82,6 +82,7 @@ static int beeping = 0; extern u_int64_t itc_frequency; +#ifndef SMP static timecounter_get_t ia64_get_timecount; static struct timecounter ia64_timecounter = { @@ -94,6 +95,7 @@ static struct timecounter ia64_timecounter = { SYSCTL_OPAQUE(_debug, OID_AUTO, ia64_timecounter, CTLFLAG_RD, &ia64_timecounter, sizeof(ia64_timecounter), "S,timecounter", ""); +#endif /* Values for timerX_state: */ #define RELEASED 0 @@ -119,7 +121,9 @@ static u_int64_t scaled_ticks_per_cycle; static u_int32_t max_cycles_per_tick; static u_int32_t last_time; +#if 0 /* not used yet */ static u_int32_t calibrate_clocks(u_int32_t firmware_freq); +#endif void clockattach(kobj_t dev) @@ -185,8 +189,10 @@ cpu_initclocks() scaled_ticks_per_cycle = ((u_int64_t)hz << FIX_SHIFT) / freq; max_cycles_per_tick = 2*freq / hz; +#ifndef SMP ia64_timecounter.tc_frequency = freq; tc_init(&ia64_timecounter); +#endif ia64_set_itm(ia64_get_itc() + (itc_frequency + hz/2) / hz); ia64_set_itv(255); /* highest priority class */ @@ -194,6 +200,7 @@ cpu_initclocks() stathz = 128; } +#if 0 /* not used yet */ static u_int32_t calibrate_clocks(u_int32_t firmware_freq) { @@ -247,6 +254,7 @@ fail: firmware_freq); return (firmware_freq); } +#endif void handleclock(void* arg) @@ -414,11 +422,13 @@ resettodr() CLOCK_SET(clockdev, &ct); } +#ifndef SMP static unsigned ia64_get_timecount(struct timecounter* tc) { return ia64_get_itc(); } +#endif int acquire_timer2(int mode) |
