diff options
Diffstat (limited to 'hw/apic.c')
| -rw-r--r-- | hw/apic.c | 63 |
1 files changed, 43 insertions, 20 deletions
@@ -166,6 +166,37 @@ static inline void reset_bit(uint32_t *tab, int index) tab[i] &= ~mask; } +void apic_local_deliver(CPUState *env, int vector) +{ + APICState *s = env->apic_state; + uint32_t lvt = s->lvt[vector]; + int trigger_mode; + + if (lvt & APIC_LVT_MASKED) + return; + + switch ((lvt >> 8) & 7) { + case APIC_DM_SMI: + cpu_interrupt(env, CPU_INTERRUPT_SMI); + break; + + case APIC_DM_NMI: + cpu_interrupt(env, CPU_INTERRUPT_NMI); + break; + + case APIC_DM_EXTINT: + cpu_interrupt(env, CPU_INTERRUPT_HARD); + break; + + case APIC_DM_FIXED: + trigger_mode = APIC_TRIGGER_EDGE; + if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) && + (lvt & APIC_LVT_LEVEL_TRIGGER)) + trigger_mode = APIC_TRIGGER_LEVEL; + apic_set_irq(s, lvt & 0xff, trigger_mode); + } +} + #define foreach_apic(apic, deliver_bitmask, code) \ {\ int __i, __j, __mask;\ @@ -502,10 +533,8 @@ int apic_accept_pic_intr(CPUState *env) 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))) + if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 || + (lvt0 & APIC_LVT_MASKED) == 0) return 1; return 0; @@ -556,9 +585,7 @@ static void apic_timer(void *opaque) { APICState *s = opaque; - if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) { - apic_set_irq(s, s->lvt[APIC_LVT_TIMER] & 0xff, APIC_TRIGGER_EDGE); - } + apic_local_deliver(s->cpu_env, APIC_LVT_TIMER); apic_timer_update(s, s->next_time); } @@ -821,12 +848,14 @@ static void apic_reset(void *opaque) 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; + if (s->id == 0) { + /* + * LINT0 delivery mode on CPU #0 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] = { @@ -851,19 +880,13 @@ int apic_init(CPUState *env) if (!s) return -1; env->apic_state = s; - apic_init_ipi(s); s->id = last_apic_id++; env->cpuid_apic_id = s->id; s->cpu_env = env; 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; + apic_reset(s); /* XXX: mapping more APICs at the same memory location */ if (apic_io_memory == 0) { |