4 * Copyright (c) 2004-2005 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>
22 #include "qemu-timer.h"
23 #include "host-utils.h"
27 /* APIC Local Vector Table */
28 #define APIC_LVT_TIMER 0
29 #define APIC_LVT_THERMAL 1
30 #define APIC_LVT_PERFORM 2
31 #define APIC_LVT_LINT0 3
32 #define APIC_LVT_LINT1 4
33 #define APIC_LVT_ERROR 5
36 /* APIC delivery modes */
37 #define APIC_DM_FIXED 0
38 #define APIC_DM_LOWPRI 1
41 #define APIC_DM_INIT 5
42 #define APIC_DM_SIPI 6
43 #define APIC_DM_EXTINT 7
45 /* APIC destination mode */
46 #define APIC_DESTMODE_FLAT 0xf
47 #define APIC_DESTMODE_CLUSTER 1
49 #define APIC_TRIGGER_EDGE 0
50 #define APIC_TRIGGER_LEVEL 1
52 #define APIC_LVT_TIMER_PERIODIC (1<<17)
53 #define APIC_LVT_MASKED (1<<16)
54 #define APIC_LVT_LEVEL_TRIGGER (1<<15)
55 #define APIC_LVT_REMOTE_IRR (1<<14)
56 #define APIC_INPUT_POLARITY (1<<13)
57 #define APIC_SEND_PENDING (1<<12)
59 #define ESR_ILLEGAL_ADDRESS (1 << 7)
61 #define APIC_SV_DIRECTED_IO (1<<12)
62 #define APIC_SV_ENABLE (1<<8)
65 #define MAX_APIC_WORDS 8
67 /* Intel APIC constants: from include/asm/msidef.h */
68 #define MSI_DATA_VECTOR_SHIFT 0
69 #define MSI_DATA_VECTOR_MASK 0x000000ff
70 #define MSI_DATA_DELIVERY_MODE_SHIFT 8
71 #define MSI_DATA_TRIGGER_SHIFT 15
72 #define MSI_DATA_LEVEL_SHIFT 14
73 #define MSI_ADDR_DEST_MODE_SHIFT 2
74 #define MSI_ADDR_DEST_ID_SHIFT 12
75 #define MSI_ADDR_DEST_ID_MASK 0x00ffff0
77 #define MSI_ADDR_SIZE 0x100000
79 typedef struct APICState APICState;
83 MemoryRegion io_memory;
89 uint32_t spurious_vec;
92 uint32_t isr[8]; /* in service register */
93 uint32_t tmr[8]; /* trigger mode register */
94 uint32_t irr[8]; /* interrupt request register */
95 uint32_t lvt[APIC_LVT_NB];
96 uint32_t esr; /* error register */
101 uint32_t initial_count;
102 int64_t initial_count_load_time, next_time;
109 static APICState *local_apics[MAX_APICS + 1];
110 static int apic_irq_delivered;
112 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode);
113 static void apic_update_irq(APICState *s);
114 static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
115 uint8_t dest, uint8_t dest_mode);
117 /* Find first bit starting from msb */
118 static int fls_bit(uint32_t value)
120 return 31 - clz32(value);
123 /* Find first bit starting from lsb */
124 static int ffs_bit(uint32_t value)
129 static inline void set_bit(uint32_t *tab, int index)
133 mask = 1 << (index & 0x1f);
137 static inline void reset_bit(uint32_t *tab, int index)
141 mask = 1 << (index & 0x1f);
145 static inline int get_bit(uint32_t *tab, int index)
149 mask = 1 << (index & 0x1f);
150 return !!(tab[i] & mask);
153 static void apic_local_deliver(APICState *s, int vector)
155 uint32_t lvt = s->lvt[vector];
158 trace_apic_local_deliver(vector, (lvt >> 8) & 7);
160 if (lvt & APIC_LVT_MASKED)
163 switch ((lvt >> 8) & 7) {
165 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SMI);
169 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_NMI);
173 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
177 trigger_mode = APIC_TRIGGER_EDGE;
178 if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) &&
179 (lvt & APIC_LVT_LEVEL_TRIGGER))
180 trigger_mode = APIC_TRIGGER_LEVEL;
181 apic_set_irq(s, lvt & 0xff, trigger_mode);
185 void apic_deliver_pic_intr(DeviceState *d, int level)
187 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
190 apic_local_deliver(s, APIC_LVT_LINT0);
192 uint32_t lvt = s->lvt[APIC_LVT_LINT0];
194 switch ((lvt >> 8) & 7) {
196 if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
198 reset_bit(s->irr, lvt & 0xff);
201 cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
207 #define foreach_apic(apic, deliver_bitmask, code) \
209 int __i, __j, __mask;\
210 for(__i = 0; __i < MAX_APIC_WORDS; __i++) {\
211 __mask = deliver_bitmask[__i];\
213 for(__j = 0; __j < 32; __j++) {\
214 if (__mask & (1 << __j)) {\
215 apic = local_apics[__i * 32 + __j];\
225 static void apic_bus_deliver(const uint32_t *deliver_bitmask,
226 uint8_t delivery_mode, uint8_t vector_num,
227 uint8_t trigger_mode)
229 APICState *apic_iter;
231 switch (delivery_mode) {
233 /* XXX: search for focus processor, arbitration */
237 for(i = 0; i < MAX_APIC_WORDS; i++) {
238 if (deliver_bitmask[i]) {
239 d = i * 32 + ffs_bit(deliver_bitmask[i]);
244 apic_iter = local_apics[d];
246 apic_set_irq(apic_iter, vector_num, trigger_mode);
256 foreach_apic(apic_iter, deliver_bitmask,
257 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_SMI) );
261 foreach_apic(apic_iter, deliver_bitmask,
262 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_NMI) );
266 /* normal INIT IPI sent to processors */
267 foreach_apic(apic_iter, deliver_bitmask,
268 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_INIT) );
272 /* handled in I/O APIC code */
279 foreach_apic(apic_iter, deliver_bitmask,
280 apic_set_irq(apic_iter, vector_num, trigger_mode) );
283 void apic_deliver_irq(uint8_t dest, uint8_t dest_mode, uint8_t delivery_mode,
284 uint8_t vector_num, uint8_t trigger_mode)
286 uint32_t deliver_bitmask[MAX_APIC_WORDS];
288 trace_apic_deliver_irq(dest, dest_mode, delivery_mode, vector_num,
291 apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
292 apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
295 void cpu_set_apic_base(DeviceState *d, uint64_t val)
297 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
299 trace_cpu_set_apic_base(val);
303 s->apicbase = (val & 0xfffff000) |
304 (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
305 /* if disabled, cannot be enabled again */
306 if (!(val & MSR_IA32_APICBASE_ENABLE)) {
307 s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
308 cpu_clear_apic_feature(s->cpu_env);
309 s->spurious_vec &= ~APIC_SV_ENABLE;
313 uint64_t cpu_get_apic_base(DeviceState *d)
315 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
317 trace_cpu_get_apic_base(s ? (uint64_t)s->apicbase: 0);
319 return s ? s->apicbase : 0;
322 void cpu_set_apic_tpr(DeviceState *d, uint8_t val)
324 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
328 s->tpr = (val & 0x0f) << 4;
332 uint8_t cpu_get_apic_tpr(DeviceState *d)
334 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
336 return s ? s->tpr >> 4 : 0;
339 /* return -1 if no bit is set */
340 static int get_highest_priority_int(uint32_t *tab)
343 for(i = 7; i >= 0; i--) {
345 return i * 32 + fls_bit(tab[i]);
351 static int apic_get_ppr(APICState *s)
356 isrv = get_highest_priority_int(s->isr);
367 static int apic_get_arb_pri(APICState *s)
369 /* XXX: arbitration */
375 * <0 - low prio interrupt,
377 * >0 - interrupt number
379 static int apic_irq_pending(APICState *s)
382 irrv = get_highest_priority_int(s->irr);
386 ppr = apic_get_ppr(s);
387 if (ppr && (irrv & 0xf0) <= (ppr & 0xf0)) {
394 /* signal the CPU if an irq is pending */
395 static void apic_update_irq(APICState *s)
397 if (!(s->spurious_vec & APIC_SV_ENABLE)) {
400 if (apic_irq_pending(s) > 0) {
401 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
405 void apic_reset_irq_delivered(void)
407 trace_apic_reset_irq_delivered(apic_irq_delivered);
409 apic_irq_delivered = 0;
412 int apic_get_irq_delivered(void)
414 trace_apic_get_irq_delivered(apic_irq_delivered);
416 return apic_irq_delivered;
419 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode)
421 apic_irq_delivered += !get_bit(s->irr, vector_num);
423 trace_apic_set_irq(apic_irq_delivered);
425 set_bit(s->irr, vector_num);
427 set_bit(s->tmr, vector_num);
429 reset_bit(s->tmr, vector_num);
433 static void apic_eoi(APICState *s)
436 isrv = get_highest_priority_int(s->isr);
439 reset_bit(s->isr, isrv);
440 if (!(s->spurious_vec & APIC_SV_DIRECTED_IO) && get_bit(s->tmr, isrv)) {
441 ioapic_eoi_broadcast(isrv);
446 static int apic_find_dest(uint8_t dest)
448 APICState *apic = local_apics[dest];
451 if (apic && apic->id == dest)
452 return dest; /* shortcut in case apic->id == apic->idx */
454 for (i = 0; i < MAX_APICS; i++) {
455 apic = local_apics[i];
456 if (apic && apic->id == dest)
465 static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
466 uint8_t dest, uint8_t dest_mode)
468 APICState *apic_iter;
471 if (dest_mode == 0) {
473 memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t));
475 int idx = apic_find_dest(dest);
476 memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
478 set_bit(deliver_bitmask, idx);
481 /* XXX: cluster mode */
482 memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
483 for(i = 0; i < MAX_APICS; i++) {
484 apic_iter = local_apics[i];
486 if (apic_iter->dest_mode == 0xf) {
487 if (dest & apic_iter->log_dest)
488 set_bit(deliver_bitmask, i);
489 } else if (apic_iter->dest_mode == 0x0) {
490 if ((dest & 0xf0) == (apic_iter->log_dest & 0xf0) &&
491 (dest & apic_iter->log_dest & 0x0f)) {
492 set_bit(deliver_bitmask, i);
502 void apic_init_reset(DeviceState *d)
504 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
511 s->spurious_vec = 0xff;
514 memset(s->isr, 0, sizeof(s->isr));
515 memset(s->tmr, 0, sizeof(s->tmr));
516 memset(s->irr, 0, sizeof(s->irr));
517 for(i = 0; i < APIC_LVT_NB; i++)
518 s->lvt[i] = 1 << 16; /* mask LVT */
520 memset(s->icr, 0, sizeof(s->icr));
523 s->initial_count = 0;
524 s->initial_count_load_time = 0;
526 s->wait_for_sipi = 1;
529 static void apic_startup(APICState *s, int vector_num)
531 s->sipi_vector = vector_num;
532 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
535 void apic_sipi(DeviceState *d)
537 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
539 cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
541 if (!s->wait_for_sipi)
543 cpu_x86_load_seg_cache_sipi(s->cpu_env, s->sipi_vector);
544 s->wait_for_sipi = 0;
547 static void apic_deliver(DeviceState *d, uint8_t dest, uint8_t dest_mode,
548 uint8_t delivery_mode, uint8_t vector_num,
549 uint8_t trigger_mode)
551 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
552 uint32_t deliver_bitmask[MAX_APIC_WORDS];
553 int dest_shorthand = (s->icr[0] >> 18) & 3;
554 APICState *apic_iter;
556 switch (dest_shorthand) {
558 apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
561 memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask));
562 set_bit(deliver_bitmask, s->idx);
565 memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
568 memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
569 reset_bit(deliver_bitmask, s->idx);
573 switch (delivery_mode) {
576 int trig_mode = (s->icr[0] >> 15) & 1;
577 int level = (s->icr[0] >> 14) & 1;
578 if (level == 0 && trig_mode == 1) {
579 foreach_apic(apic_iter, deliver_bitmask,
580 apic_iter->arb_id = apic_iter->id );
587 foreach_apic(apic_iter, deliver_bitmask,
588 apic_startup(apic_iter, vector_num) );
592 apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
595 int apic_get_interrupt(DeviceState *d)
597 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
600 /* if the APIC is installed or enabled, we let the 8259 handle the
604 if (!(s->spurious_vec & APIC_SV_ENABLE))
607 intno = apic_irq_pending(s);
611 } else if (intno < 0) {
612 return s->spurious_vec & 0xff;
614 reset_bit(s->irr, intno);
615 set_bit(s->isr, intno);
620 int apic_accept_pic_intr(DeviceState *d)
622 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
628 lvt0 = s->lvt[APIC_LVT_LINT0];
630 if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 ||
631 (lvt0 & APIC_LVT_MASKED) == 0)
637 static uint32_t apic_get_current_count(APICState *s)
641 d = (qemu_get_clock_ns(vm_clock) - s->initial_count_load_time) >>
643 if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
645 val = s->initial_count - (d % ((uint64_t)s->initial_count + 1));
647 if (d >= s->initial_count)
650 val = s->initial_count - d;
655 static void apic_timer_update(APICState *s, int64_t current_time)
657 int64_t next_time, d;
659 if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
660 d = (current_time - s->initial_count_load_time) >>
662 if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
663 if (!s->initial_count)
665 d = ((d / ((uint64_t)s->initial_count + 1)) + 1) * ((uint64_t)s->initial_count + 1);
667 if (d >= s->initial_count)
669 d = (uint64_t)s->initial_count + 1;
671 next_time = s->initial_count_load_time + (d << s->count_shift);
672 qemu_mod_timer(s->timer, next_time);
673 s->next_time = next_time;
676 qemu_del_timer(s->timer);
680 static void apic_timer(void *opaque)
682 APICState *s = opaque;
684 apic_local_deliver(s, APIC_LVT_TIMER);
685 apic_timer_update(s, s->next_time);
688 static uint32_t apic_mem_readb(void *opaque, target_phys_addr_t addr)
693 static uint32_t apic_mem_readw(void *opaque, target_phys_addr_t addr)
698 static void apic_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
702 static void apic_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
706 static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr)
713 d = cpu_get_current_apic();
717 s = DO_UPCAST(APICState, busdev.qdev, d);
719 index = (addr >> 4) & 0xff;
724 case 0x03: /* version */
725 val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */
731 val = apic_get_arb_pri(s);
735 val = apic_get_ppr(s);
741 val = s->log_dest << 24;
744 val = s->dest_mode << 28;
747 val = s->spurious_vec;
750 val = s->isr[index & 7];
753 val = s->tmr[index & 7];
756 val = s->irr[index & 7];
763 val = s->icr[index & 1];
766 val = s->lvt[index - 0x32];
769 val = s->initial_count;
772 val = apic_get_current_count(s);
775 val = s->divide_conf;
778 s->esr |= ESR_ILLEGAL_ADDRESS;
782 trace_apic_mem_readl(addr, val);
786 static void apic_send_msi(target_phys_addr_t addr, uint32_t data)
788 uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
789 uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
790 uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
791 uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
792 uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
793 /* XXX: Ignore redirection hint. */
794 apic_deliver_irq(dest, dest_mode, delivery, vector, trigger_mode);
797 static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
801 int index = (addr >> 4) & 0xff;
802 if (addr > 0xfff || !index) {
803 /* MSI and MMIO APIC are at the same memory location,
804 * but actually not on the global bus: MSI is on PCI bus
805 * APIC is connected directly to the CPU.
806 * Mapping them on the global bus happens to work because
807 * MSI registers are reserved in APIC MMIO and vice versa. */
808 apic_send_msi(addr, val);
812 d = cpu_get_current_apic();
816 s = DO_UPCAST(APICState, busdev.qdev, d);
818 trace_apic_mem_writel(addr, val);
837 s->log_dest = val >> 24;
840 s->dest_mode = val >> 28;
843 s->spurious_vec = val & 0x1ff;
853 apic_deliver(d, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1,
854 (s->icr[0] >> 8) & 7, (s->icr[0] & 0xff),
855 (s->icr[0] >> 15) & 1);
862 int n = index - 0x32;
864 if (n == APIC_LVT_TIMER)
865 apic_timer_update(s, qemu_get_clock_ns(vm_clock));
869 s->initial_count = val;
870 s->initial_count_load_time = qemu_get_clock_ns(vm_clock);
871 apic_timer_update(s, s->initial_count_load_time);
878 s->divide_conf = val & 0xb;
879 v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4);
880 s->count_shift = (v + 1) & 7;
884 s->esr |= ESR_ILLEGAL_ADDRESS;
889 /* This function is only used for old state version 1 and 2 */
890 static int apic_load_old(QEMUFile *f, void *opaque, int version_id)
892 APICState *s = opaque;
898 /* XXX: what if the base changes? (registered memory regions) */
899 qemu_get_be32s(f, &s->apicbase);
900 qemu_get_8s(f, &s->id);
901 qemu_get_8s(f, &s->arb_id);
902 qemu_get_8s(f, &s->tpr);
903 qemu_get_be32s(f, &s->spurious_vec);
904 qemu_get_8s(f, &s->log_dest);
905 qemu_get_8s(f, &s->dest_mode);
906 for (i = 0; i < 8; i++) {
907 qemu_get_be32s(f, &s->isr[i]);
908 qemu_get_be32s(f, &s->tmr[i]);
909 qemu_get_be32s(f, &s->irr[i]);
911 for (i = 0; i < APIC_LVT_NB; i++) {
912 qemu_get_be32s(f, &s->lvt[i]);
914 qemu_get_be32s(f, &s->esr);
915 qemu_get_be32s(f, &s->icr[0]);
916 qemu_get_be32s(f, &s->icr[1]);
917 qemu_get_be32s(f, &s->divide_conf);
918 s->count_shift=qemu_get_be32(f);
919 qemu_get_be32s(f, &s->initial_count);
920 s->initial_count_load_time=qemu_get_be64(f);
921 s->next_time=qemu_get_be64(f);
924 qemu_get_timer(f, s->timer);
928 static const VMStateDescription vmstate_apic = {
931 .minimum_version_id = 3,
932 .minimum_version_id_old = 1,
933 .load_state_old = apic_load_old,
934 .fields = (VMStateField []) {
935 VMSTATE_UINT32(apicbase, APICState),
936 VMSTATE_UINT8(id, APICState),
937 VMSTATE_UINT8(arb_id, APICState),
938 VMSTATE_UINT8(tpr, APICState),
939 VMSTATE_UINT32(spurious_vec, APICState),
940 VMSTATE_UINT8(log_dest, APICState),
941 VMSTATE_UINT8(dest_mode, APICState),
942 VMSTATE_UINT32_ARRAY(isr, APICState, 8),
943 VMSTATE_UINT32_ARRAY(tmr, APICState, 8),
944 VMSTATE_UINT32_ARRAY(irr, APICState, 8),
945 VMSTATE_UINT32_ARRAY(lvt, APICState, APIC_LVT_NB),
946 VMSTATE_UINT32(esr, APICState),
947 VMSTATE_UINT32_ARRAY(icr, APICState, 2),
948 VMSTATE_UINT32(divide_conf, APICState),
949 VMSTATE_INT32(count_shift, APICState),
950 VMSTATE_UINT32(initial_count, APICState),
951 VMSTATE_INT64(initial_count_load_time, APICState),
952 VMSTATE_INT64(next_time, APICState),
953 VMSTATE_TIMER(timer, APICState),
954 VMSTATE_END_OF_LIST()
958 static void apic_reset(DeviceState *d)
960 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
963 bsp = cpu_is_bsp(s->cpu_env);
964 s->apicbase = 0xfee00000 |
965 (bsp ? MSR_IA32_APICBASE_BSP : 0) | MSR_IA32_APICBASE_ENABLE;
971 * LINT0 delivery mode on CPU #0 is set to ExtInt at initialization
972 * time typically by BIOS, so PIC interrupt can be delivered to the
973 * processor when local APIC is enabled.
975 s->lvt[APIC_LVT_LINT0] = 0x700;
979 static const MemoryRegionOps apic_io_ops = {
981 .read = { apic_mem_readb, apic_mem_readw, apic_mem_readl, },
982 .write = { apic_mem_writeb, apic_mem_writew, apic_mem_writel, },
984 .endianness = DEVICE_NATIVE_ENDIAN,
987 static int apic_init1(SysBusDevice *dev)
989 APICState *s = FROM_SYSBUS(APICState, dev);
990 static int last_apic_idx;
992 if (last_apic_idx >= MAX_APICS) {
995 memory_region_init_io(&s->io_memory, &apic_io_ops, s, "apic",
997 sysbus_init_mmio_region(dev, &s->io_memory);
999 s->timer = qemu_new_timer_ns(vm_clock, apic_timer, s);
1000 s->idx = last_apic_idx++;
1001 local_apics[s->idx] = s;
1005 static SysBusDeviceInfo apic_info = {
1007 .qdev.name = "apic",
1008 .qdev.size = sizeof(APICState),
1009 .qdev.vmsd = &vmstate_apic,
1010 .qdev.reset = apic_reset,
1012 .qdev.props = (Property[]) {
1013 DEFINE_PROP_UINT8("id", APICState, id, -1),
1014 DEFINE_PROP_PTR("cpu_env", APICState, cpu_env),
1015 DEFINE_PROP_END_OF_LIST(),
1019 static void apic_register_devices(void)
1021 sysbus_register_withprop(&apic_info);
1024 device_init(apic_register_devices)