x86/x86/local_apic.c

211 		/* Use a vector of 0. */
404 	/* Setup spurious vector and enable the local APIC. */
598 	/* Program the spurious vector to enable the local APIC. */
622 lapic_intr_pending(u_int vector)
629 	 * we divide the vector by 32 to get the 128-bit index.  We then
632 	 * modulus the vector by 32 to determine the individual bit to
636 	return (irr[(vector / 32) * 4] & 1 << (vector % 32));
786  * the passed in vector.
789 lapic_set_tpr(u_int vector)
792 	lapic->tpr = vector;
797 	tpr |= vector;
810 lapic_handle_intr(int vector, struct trapframe *frame)
815 	    vector));
970 /* Request a free IDT vector to be used by the specified IRQ. */
974 	u_int vector;
979 	 * Search for a free vector.  Currently we just use a very simple
980 	 * algorithm to find the first free vector.
983 	for (vector = 0; vector < APIC_NUM_IOINTS; vector++) {
984 		if (lapics[apic_id].la_ioint_irqs[vector] != -1)
986 		lapics[apic_id].la_ioint_irqs[vector] = irq;
988 		return (vector + APIC_IO_INTS);
1003 	u_int first, run, vector;
1021 	for (vector = 0; vector < APIC_NUM_IOINTS; vector++) {
1024 		if (lapics[apic_id].la_ioint_irqs[vector] != -1) {
1030 		/* Start a new run if run == 0 and vector is aligned. */
1032 			if ((vector & (align - 1)) != 0)
1034 			first = vector;
1042 		/* Found a run, assign IRQs and return the first vector. */
1043 		for (vector = 0; vector < count; vector++)
1044 			lapics[apic_id].la_ioint_irqs[first + vector] =
1045 			    irqs[vector];
1055  * Enable a vector for a particular apic_id.  Since all lapics share idt
1056  * entries and ioint_handlers this enables the vector on all lapics.  lapics
1057  * which do not have the vector configured would report spurious interrupts
1061 apic_enable_vector(u_int apic_id, u_int vector)
1064 	KASSERT(vector != IDT_SYSCALL, ("Attempt to overwrite syscall entry"));
1065 	KASSERT(ioint_handlers[vector / 32] != NULL,
1066 	    ("No ISR handler for vector %u", vector));
1068 	KASSERT(vector != IDT_DTRACE_RET,
1071 	setidt(vector, ioint_handlers[vector / 32], SDT_APIC, SEL_KPL,
1076 apic_disable_vector(u_int apic_id, u_int vector)
1079 	KASSERT(vector != IDT_SYSCALL, ("Attempt to overwrite syscall entry"));
1081 	KASSERT(vector != IDT_DTRACE_RET,
1084 	KASSERT(ioint_handlers[vector / 32] != NULL,
1085 	    ("No ISR handler for vector %u", vector));
1089 	 * may have a valid vector at this offset.
1091 	setidt(vector, &IDTVEC(rsvd), SDT_APICT, SEL_KPL, GSEL_APIC);
1095 /* Release an APIC vector when it's no longer in use. */
1097 apic_free_vector(u_int apic_id, u_int vector, u_int irq)
1101 	KASSERT(vector >= APIC_IO_INTS && vector != IDT_SYSCALL &&
1102 	    vector <= APIC_IO_INTS + APIC_NUM_IOINTS,
1103 	    ("Vector %u does not map to an IRQ line", vector));
1105 	KASSERT(lapics[apic_id].la_ioint_irqs[vector - APIC_IO_INTS] ==
1108 	KASSERT(vector != IDT_DTRACE_RET,
1113 	 * Bind us to the cpu that owned the vector before freeing it so
1125 	lapics[apic_id].la_ioint_irqs[vector - APIC_IO_INTS] = -1;
1134 /* Map an IDT vector (APIC) to an IRQ (interrupt source). */
1136 apic_idt_to_irq(u_int apic_id, u_int vector)
1140 	KASSERT(vector >= APIC_IO_INTS && vector != IDT_SYSCALL &&
1141 	    vector <= APIC_IO_INTS + APIC_NUM_IOINTS,
1142 	    ("Vector %u does not map to an IRQ line", vector));
1144 	KASSERT(vector != IDT_DTRACE_RET,
1147 	irq = lapics[apic_id].la_ioint_irqs[vector - APIC_IO_INTS];
1155  * Dump data about APIC IDT vector mappings.
1476 lapic_ipi_vectored(u_int vector, int dest)
1480 	KASSERT((vector & ~APIC_VECTOR_MASK) == 0,
1481 	    ("%s: invalid vector %d", __func__, vector));
1486 	 * IPI_STOP_HARD is just a "fake" vector used to send a NMI.
1488 	 * the vector.
1490 	if (vector == IPI_STOP_HARD)
1493 		icrlo |= vector | APIC_DELMODE_FIXED;