Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / arch / x86_64 / kernel / pmtimer.c

diff --git a/arch/x86_64/kernel/pmtimer.c b/arch/x86_64/kernel/pmtimer.c
index feb5f10..bf421ed 100644 (file)
--- a/arch/x86_64/kernel/pmtimer.c
+++ b/arch/x86_64/kernel/pmtimer.c
@@ -68,7 +68,7 @@ int pmtimer_mark_offset(void)
        offset_delay = delta % (USEC_PER_SEC / HZ);
 
        rdtscll(tsc);
-       vxtime.last_tsc = tsc - offset_delay * cpu_khz;
+       vxtime.last_tsc = tsc - offset_delay * (u64)cpu_khz / 1000;
 
        /* don't calculate delay for first run,
           or if we've got less then a tick */
@@ -80,6 +80,32 @@ int pmtimer_mark_offset(void)
        return lost - 1;
 }
 
+static unsigned pmtimer_wait_tick(void)
+{
+       u32 a, b;
+       for (a = b = inl(pmtmr_ioport) & ACPI_PM_MASK;
+            a == b;
+            b = inl(pmtmr_ioport) & ACPI_PM_MASK)
+               cpu_relax();
+       return b;
+}
+
+/* note: wait time is rounded up to one tick */
+void pmtimer_wait(unsigned us)
+{
+       u32 a, b;
+       a = pmtimer_wait_tick();
+       do {
+               b = inl(pmtmr_ioport);
+               cpu_relax();
+       } while (cyc2us(b - a) < us);
+}
+
+void pmtimer_resume(void)
+{
+       last_pmtmr_tick = inl(pmtmr_ioport);
+}
+
 unsigned int do_gettimeoffset_pm(void)
 {
        u32 now, offset, delta = 0;
@@ -95,7 +121,7 @@ unsigned int do_gettimeoffset_pm(void)
 static int __init nopmtimer_setup(char *s)
 {
        pmtmr_ioport = 0;
-       return 0;
+       return 1;
 }
 
 __setup("nopmtimer", nopmtimer_setup);