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Kernel: Use 64 bit write on HPET on x86_64

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Bananymous
2026-08-17 04:33:20 +03:00
parent 1128e440d2
commit 7aa8eb1778
1 changed files with 16 additions and 6 deletions
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kernel/kernel/Timer/HPET.cpp
+16 -6
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@@ -240,25 +240,35 @@ namespace Kernel
// set timer period to 1000 Hz
const uint64_t ticks_per_ms = m_ticks_per_s / 1000;
timer0.configuration = timer0.configuration | Tn_VAL_SET_CNF;
timer0.comparator.low = ticks_per_ms;
if (timer0.configuration & Tn_SIZE_CAP)
{
#if ARCH(x86_64)
timer0.configuration = timer0.configuration | Tn_VAL_SET_CNF;
timer0.comparator.full = ticks_per_ms;
#else
timer0.configuration = timer0.configuration | Tn_VAL_SET_CNF;
timer0.comparator.low = ticks_per_ms;
timer0.configuration = timer0.configuration | Tn_VAL_SET_CNF;
timer0.comparator.high = ticks_per_ms >> 32;
#endif
}
else if (ticks_per_ms > 0xFFFFFFFF)
else if (ticks_per_ms <= 0xFFFFFFFF)
{
timer0.configuration = timer0.configuration | Tn_VAL_SET_CNF;
timer0.comparator.low = ticks_per_ms;
}
else
{
dprintln("HPET: cannot create 1 kHz timer");
return BAN::Error::from_errno(ENOTSUP);
}
// enable main counter
regs.configuration.low = regs.configuration.low | ENABLE_CNF;
set_irq(irq);
InterruptController::get().enable_irq(irq);
regs.configuration.low = regs.configuration.low | ENABLE_CNF;
return {};
}