Differential D1719 Diff 3511 sys/x86/x86/local_apic.c

Changeset View

Standalone View

sys/x86/x86/local_apic.c

Show First 20 Lines • Show All 1,446 Lines • ▼ Show 20 Lines
/*		/*
* Inter Processor Interrupt functions. The lapic_ipi_*() functions are		* Inter Processor Interrupt functions. The lapic_ipi_*() functions are
* private to the MD code. The public interface for the rest of the		* private to the MD code. The public interface for the rest of the
* kernel is defined in mp_machdep.c.		* kernel is defined in mp_machdep.c.
*/		*/
static int		static int
native_lapic_ipi_wait(int delay)		native_lapic_ipi_wait(int delay)
{		{
int x, incr;		int x;

/*		/*
* Wait delay loops for IPI to be sent. This is highly bogus		* Wait delay microseconds for IPI to be sent. If delay is
* since this is sensitive to CPU clock speed. If delay is
* -1, we wait forever.		* -1, we wait forever.
*/		*/
if (delay == -1) {		if (delay == -1) {
incr = 0;		while ((lapic->icr_lo & APIC_DELSTAT_MASK) != APIC_DELSTAT_IDLE)
delay = 1;		ia32_pause();
} else		return (1);
incr = 1;		}
for (x = 0; x < delay; x += incr) {
		for (x = 0; x < delay; x += 5) {
if ((lapic->icr_lo & APIC_DELSTAT_MASK) == APIC_DELSTAT_IDLE)		if ((lapic->icr_lo & APIC_DELSTAT_MASK) == APIC_DELSTAT_IDLE)
return (1);		return (1);
ia32_pause();		DELAY(5);
}		}
return (0);		return (0);
}		}

static void		static void
native_lapic_ipi_raw(register_t icrlo, u_int dest)		native_lapic_ipi_raw(register_t icrlo, u_int dest)
{		{
register_t value, saveintr;		register_t value, saveintr;
Show All 17 Lines	native_lapic_ipi_raw(register_t icrlo, u_int dest)
/* Program the contents of the IPI and dispatch it. */		/* Program the contents of the IPI and dispatch it. */
value = lapic->icr_lo;		value = lapic->icr_lo;
value &= APIC_ICRLO_RESV_MASK;		value &= APIC_ICRLO_RESV_MASK;
value \|= icrlo;		value \|= icrlo;
lapic->icr_lo = value;		lapic->icr_lo = value;
intr_restore(saveintr);		intr_restore(saveintr);
}		}

#define BEFORE_SPIN 1000000		#define BEFORE_SPIN 50000
#ifdef DETECT_DEADLOCK		#ifdef DETECT_DEADLOCK
#define AFTER_SPIN 1000		#define AFTER_SPIN 50
#endif		#endif

static void		static void
native_lapic_ipi_vectored(u_int vector, int dest)		native_lapic_ipi_vectored(u_int vector, int dest)
{		{
register_t icrlo, destfield;		register_t icrlo, destfield;

KASSERT((vector & ~APIC_VECTOR_MASK) == 0,		KASSERT((vector & ~APIC_VECTOR_MASK) == 0,
▲ Show 20 Lines • Show All 69 Lines • Show Last 20 Lines