/*
* APIC support
- *
+ *
* Copyright (c) 2004-2005 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
}\
}
-static void apic_bus_deliver(const uint32_t *deliver_bitmask,
+static void apic_bus_deliver(const uint32_t *deliver_bitmask,
uint8_t delivery_mode,
uint8_t vector_num, uint8_t polarity,
uint8_t trigger_mode)
case APIC_DM_INIT:
/* normal INIT IPI sent to processors */
- foreach_apic(apic_iter, deliver_bitmask,
+ foreach_apic(apic_iter, deliver_bitmask,
apic_init_ipi(apic_iter) );
return;
-
+
case APIC_DM_EXTINT:
/* handled in I/O APIC code */
break;
return;
}
- foreach_apic(apic_iter, deliver_bitmask,
+ foreach_apic(apic_iter, deliver_bitmask,
apic_set_irq(apic_iter, vector_num, trigger_mode) );
}
#ifdef DEBUG_APIC
printf("cpu_set_apic_base: %016" PRIx64 "\n", val);
#endif
- s->apicbase = (val & 0xfffff000) |
+ s->apicbase = (val & 0xfffff000) |
(s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
/* if disabled, cannot be enabled again */
if (!(val & MSR_IA32_APICBASE_ENABLE)) {
if (!(env->hflags & HF_HALTED_MASK))
return;
env->eip = 0;
- cpu_x86_load_seg_cache(env, R_CS, vector_num << 8, vector_num << 12,
+ cpu_x86_load_seg_cache(env, R_CS, vector_num << 8, vector_num << 12,
0xffff, 0);
env->hflags &= ~HF_HALTED_MASK;
}
int trig_mode = (s->icr[0] >> 15) & 1;
int level = (s->icr[0] >> 14) & 1;
if (level == 0 && trig_mode == 1) {
- foreach_apic(apic_iter, deliver_bitmask,
+ foreach_apic(apic_iter, deliver_bitmask,
apic_iter->arb_id = apic_iter->id );
return;
}
break;
case APIC_DM_SIPI:
- foreach_apic(apic_iter, deliver_bitmask,
+ foreach_apic(apic_iter, deliver_bitmask,
apic_startup(apic_iter, vector_num) );
return;
}
return -1;
if (!(s->spurious_vec & APIC_SV_ENABLE))
return -1;
-
+
/* XXX: spurious IRQ handling */
intno = get_highest_priority_int(s->irr);
if (intno < 0)
return intno;
}
+int apic_accept_pic_intr(CPUState *env)
+{
+ APICState *s = env->apic_state;
+ uint32_t lvt0;
+
+ if (!s)
+ return -1;
+
+ lvt0 = s->lvt[APIC_LVT_LINT0];
+
+ if (s->id == 0 &&
+ ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 ||
+ ((lvt0 & APIC_LVT_MASKED) == 0 &&
+ ((lvt0 >> 8) & 0x7) == APIC_DM_EXTINT)))
+ return 1;
+
+ return 0;
+}
+
static uint32_t apic_get_current_count(APICState *s)
{
int64_t d;
uint32_t val;
- d = (qemu_get_clock(vm_clock) - s->initial_count_load_time) >>
+ d = (qemu_get_clock(vm_clock) - s->initial_count_load_time) >>
s->count_shift;
if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
/* periodic */
static void apic_timer_update(APICState *s, int64_t current_time)
{
int64_t next_time, d;
-
+
if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
- d = (current_time - s->initial_count_load_time) >>
+ d = (current_time - s->initial_count_load_time) >>
s->count_shift;
if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
d = ((d / ((uint64_t)s->initial_count + 1)) + 1) * ((uint64_t)s->initial_count + 1);
{
APICState *s = opaque;
apic_init_ipi(s);
+
+ /*
+ * LINT0 delivery mode is set to ExtInt at initialization time
+ * typically by BIOS, so PIC interrupt can be delivered to the
+ * processor when local APIC is enabled.
+ */
+ s->lvt[APIC_LVT_LINT0] = 0x700;
}
static CPUReadMemoryFunc *apic_mem_read[3] = {
s->id = last_apic_id++;
env->cpuid_apic_id = s->id;
s->cpu_env = env;
- s->apicbase = 0xfee00000 |
+ s->apicbase = 0xfee00000 |
(s->id ? 0 : MSR_IA32_APICBASE_BSP) | MSR_IA32_APICBASE_ENABLE;
+ /*
+ * LINT0 delivery mode is set to ExtInt at initialization time
+ * typically by BIOS, so PIC interrupt can be delivered to the
+ * processor when local APIC is enabled.
+ */
+ s->lvt[APIC_LVT_LINT0] = 0x700;
+
/* XXX: mapping more APICs at the same memory location */
if (apic_io_memory == 0) {
/* NOTE: the APIC is directly connected to the CPU - it is not
on the global memory bus. */
- apic_io_memory = cpu_register_io_memory(0, apic_mem_read,
+ apic_io_memory = cpu_register_io_memory(0, apic_mem_read,
apic_mem_write, NULL);
cpu_register_physical_memory(s->apicbase & ~0xfff, 0x1000,
apic_io_memory);
}
s->timer = qemu_new_timer(vm_clock, apic_timer, s);
- register_savevm("apic", 0, 2, apic_save, apic_load, s);
+ register_savevm("apic", s->id, 2, apic_save, apic_load, s);
qemu_register_reset(apic_reset, s);
-
+
local_apics[s->id] = s;
return 0;
}
vector = pic_read_irq(isa_pic);
else
vector = entry & 0xff;
-
+
apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
- apic_bus_deliver(deliver_bitmask, delivery_mode,
+ apic_bus_deliver(deliver_bitmask, delivery_mode,
vector, polarity, trig_mode);
}
}
ioapic_reset(s);
s->id = last_apic_id++;
- io_memory = cpu_register_io_memory(0, ioapic_mem_read,
+ io_memory = cpu_register_io_memory(0, ioapic_mem_read,
ioapic_mem_write, s);
cpu_register_physical_memory(0xfec00000, 0x1000, io_memory);
register_savevm("ioapic", 0, 1, ioapic_save, ioapic_load, s);
qemu_register_reset(ioapic_reset, s);
-
+
return s;
}