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/>
21 #include "qemu-timer.h"
22 #include "host-utils.h"
26 //#define DEBUG_COALESCING
29 #define DPRINTF(fmt, ...) \
30 do { printf("apic: " fmt , ## __VA_ARGS__); } while (0)
32 #define DPRINTF(fmt, ...)
35 #ifdef DEBUG_COALESCING
36 #define DPRINTF_C(fmt, ...) \
37 do { printf("apic: " fmt , ## __VA_ARGS__); } while (0)
39 #define DPRINTF_C(fmt, ...)
42 /* APIC Local Vector Table */
43 #define APIC_LVT_TIMER 0
44 #define APIC_LVT_THERMAL 1
45 #define APIC_LVT_PERFORM 2
46 #define APIC_LVT_LINT0 3
47 #define APIC_LVT_LINT1 4
48 #define APIC_LVT_ERROR 5
51 /* APIC delivery modes */
52 #define APIC_DM_FIXED 0
53 #define APIC_DM_LOWPRI 1
56 #define APIC_DM_INIT 5
57 #define APIC_DM_SIPI 6
58 #define APIC_DM_EXTINT 7
60 /* APIC destination mode */
61 #define APIC_DESTMODE_FLAT 0xf
62 #define APIC_DESTMODE_CLUSTER 1
64 #define APIC_TRIGGER_EDGE 0
65 #define APIC_TRIGGER_LEVEL 1
67 #define APIC_LVT_TIMER_PERIODIC (1<<17)
68 #define APIC_LVT_MASKED (1<<16)
69 #define APIC_LVT_LEVEL_TRIGGER (1<<15)
70 #define APIC_LVT_REMOTE_IRR (1<<14)
71 #define APIC_INPUT_POLARITY (1<<13)
72 #define APIC_SEND_PENDING (1<<12)
74 #define ESR_ILLEGAL_ADDRESS (1 << 7)
76 #define APIC_SV_ENABLE (1 << 8)
79 #define MAX_APIC_WORDS 8
81 /* Intel APIC constants: from include/asm/msidef.h */
82 #define MSI_DATA_VECTOR_SHIFT 0
83 #define MSI_DATA_VECTOR_MASK 0x000000ff
84 #define MSI_DATA_DELIVERY_MODE_SHIFT 8
85 #define MSI_DATA_TRIGGER_SHIFT 15
86 #define MSI_DATA_LEVEL_SHIFT 14
87 #define MSI_ADDR_DEST_MODE_SHIFT 2
88 #define MSI_ADDR_DEST_ID_SHIFT 12
89 #define MSI_ADDR_DEST_ID_MASK 0x00ffff0
91 #define MSI_ADDR_SIZE 0x100000
93 typedef struct APICState APICState;
102 uint32_t spurious_vec;
105 uint32_t isr[8]; /* in service register */
106 uint32_t tmr[8]; /* trigger mode register */
107 uint32_t irr[8]; /* interrupt request register */
108 uint32_t lvt[APIC_LVT_NB];
109 uint32_t esr; /* error register */
112 uint32_t divide_conf;
114 uint32_t initial_count;
115 int64_t initial_count_load_time, next_time;
122 static APICState *local_apics[MAX_APICS + 1];
123 static int apic_irq_delivered;
125 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode);
126 static void apic_update_irq(APICState *s);
127 static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
128 uint8_t dest, uint8_t dest_mode);
130 /* Find first bit starting from msb */
131 static int fls_bit(uint32_t value)
133 return 31 - clz32(value);
136 /* Find first bit starting from lsb */
137 static int ffs_bit(uint32_t value)
142 static inline void set_bit(uint32_t *tab, int index)
146 mask = 1 << (index & 0x1f);
150 static inline void reset_bit(uint32_t *tab, int index)
154 mask = 1 << (index & 0x1f);
158 static inline int get_bit(uint32_t *tab, int index)
162 mask = 1 << (index & 0x1f);
163 return !!(tab[i] & mask);
166 static void apic_local_deliver(APICState *s, int vector)
168 uint32_t lvt = s->lvt[vector];
171 DPRINTF("%s: vector %d delivery mode %d\n", __func__, vector,
173 if (lvt & APIC_LVT_MASKED)
176 switch ((lvt >> 8) & 7) {
178 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SMI);
182 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_NMI);
186 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
190 trigger_mode = APIC_TRIGGER_EDGE;
191 if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) &&
192 (lvt & APIC_LVT_LEVEL_TRIGGER))
193 trigger_mode = APIC_TRIGGER_LEVEL;
194 apic_set_irq(s, lvt & 0xff, trigger_mode);
198 void apic_deliver_pic_intr(DeviceState *d, int level)
200 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
203 apic_local_deliver(s, APIC_LVT_LINT0);
205 uint32_t lvt = s->lvt[APIC_LVT_LINT0];
207 switch ((lvt >> 8) & 7) {
209 if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
211 reset_bit(s->irr, lvt & 0xff);
214 cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
220 #define foreach_apic(apic, deliver_bitmask, code) \
222 int __i, __j, __mask;\
223 for(__i = 0; __i < MAX_APIC_WORDS; __i++) {\
224 __mask = deliver_bitmask[__i];\
226 for(__j = 0; __j < 32; __j++) {\
227 if (__mask & (1 << __j)) {\
228 apic = local_apics[__i * 32 + __j];\
238 static void apic_bus_deliver(const uint32_t *deliver_bitmask,
239 uint8_t delivery_mode,
240 uint8_t vector_num, uint8_t polarity,
241 uint8_t trigger_mode)
243 APICState *apic_iter;
245 switch (delivery_mode) {
247 /* XXX: search for focus processor, arbitration */
251 for(i = 0; i < MAX_APIC_WORDS; i++) {
252 if (deliver_bitmask[i]) {
253 d = i * 32 + ffs_bit(deliver_bitmask[i]);
258 apic_iter = local_apics[d];
260 apic_set_irq(apic_iter, vector_num, trigger_mode);
270 foreach_apic(apic_iter, deliver_bitmask,
271 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_SMI) );
275 foreach_apic(apic_iter, deliver_bitmask,
276 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_NMI) );
280 /* normal INIT IPI sent to processors */
281 foreach_apic(apic_iter, deliver_bitmask,
282 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_INIT) );
286 /* handled in I/O APIC code */
293 foreach_apic(apic_iter, deliver_bitmask,
294 apic_set_irq(apic_iter, vector_num, trigger_mode) );
297 void apic_deliver_irq(uint8_t dest, uint8_t dest_mode,
298 uint8_t delivery_mode, uint8_t vector_num,
299 uint8_t polarity, uint8_t trigger_mode)
301 uint32_t deliver_bitmask[MAX_APIC_WORDS];
303 DPRINTF("%s: dest %d dest_mode %d delivery_mode %d vector %d"
304 " polarity %d trigger_mode %d\n", __func__, dest, dest_mode,
305 delivery_mode, vector_num, polarity, trigger_mode);
306 apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
307 apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, polarity,
311 void cpu_set_apic_base(DeviceState *d, uint64_t val)
313 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
315 DPRINTF("cpu_set_apic_base: %016" PRIx64 "\n", val);
318 s->apicbase = (val & 0xfffff000) |
319 (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
320 /* if disabled, cannot be enabled again */
321 if (!(val & MSR_IA32_APICBASE_ENABLE)) {
322 s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
323 cpu_clear_apic_feature(s->cpu_env);
324 s->spurious_vec &= ~APIC_SV_ENABLE;
328 uint64_t cpu_get_apic_base(DeviceState *d)
330 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
332 DPRINTF("cpu_get_apic_base: %016" PRIx64 "\n",
333 s ? (uint64_t)s->apicbase: 0);
334 return s ? s->apicbase : 0;
337 void cpu_set_apic_tpr(DeviceState *d, uint8_t val)
339 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
343 s->tpr = (val & 0x0f) << 4;
347 uint8_t cpu_get_apic_tpr(DeviceState *d)
349 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
351 return s ? s->tpr >> 4 : 0;
354 /* return -1 if no bit is set */
355 static int get_highest_priority_int(uint32_t *tab)
358 for(i = 7; i >= 0; i--) {
360 return i * 32 + fls_bit(tab[i]);
366 static int apic_get_ppr(APICState *s)
371 isrv = get_highest_priority_int(s->isr);
382 static int apic_get_arb_pri(APICState *s)
384 /* XXX: arbitration */
388 /* signal the CPU if an irq is pending */
389 static void apic_update_irq(APICState *s)
392 if (!(s->spurious_vec & APIC_SV_ENABLE))
394 irrv = get_highest_priority_int(s->irr);
397 ppr = apic_get_ppr(s);
398 if (ppr && (irrv & 0xf0) <= (ppr & 0xf0))
400 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
403 void apic_reset_irq_delivered(void)
405 DPRINTF_C("%s: old coalescing %d\n", __func__, apic_irq_delivered);
406 apic_irq_delivered = 0;
409 int apic_get_irq_delivered(void)
411 DPRINTF_C("%s: returning coalescing %d\n", __func__, apic_irq_delivered);
412 return apic_irq_delivered;
415 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode)
417 apic_irq_delivered += !get_bit(s->irr, vector_num);
418 DPRINTF_C("%s: coalescing %d\n", __func__, apic_irq_delivered);
420 set_bit(s->irr, vector_num);
422 set_bit(s->tmr, vector_num);
424 reset_bit(s->tmr, vector_num);
428 static void apic_eoi(APICState *s)
431 isrv = get_highest_priority_int(s->isr);
434 reset_bit(s->isr, isrv);
435 /* XXX: send the EOI packet to the APIC bus to allow the I/O APIC to
436 set the remote IRR bit for level triggered interrupts. */
440 static int apic_find_dest(uint8_t dest)
442 APICState *apic = local_apics[dest];
445 if (apic && apic->id == dest)
446 return dest; /* shortcut in case apic->id == apic->idx */
448 for (i = 0; i < MAX_APICS; i++) {
449 apic = local_apics[i];
450 if (apic && apic->id == dest)
457 static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
458 uint8_t dest, uint8_t dest_mode)
460 APICState *apic_iter;
463 if (dest_mode == 0) {
465 memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t));
467 int idx = apic_find_dest(dest);
468 memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
470 set_bit(deliver_bitmask, idx);
473 /* XXX: cluster mode */
474 memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
475 for(i = 0; i < MAX_APICS; i++) {
476 apic_iter = local_apics[i];
478 if (apic_iter->dest_mode == 0xf) {
479 if (dest & apic_iter->log_dest)
480 set_bit(deliver_bitmask, i);
481 } else if (apic_iter->dest_mode == 0x0) {
482 if ((dest & 0xf0) == (apic_iter->log_dest & 0xf0) &&
483 (dest & apic_iter->log_dest & 0x0f)) {
484 set_bit(deliver_bitmask, i);
492 void apic_init_reset(DeviceState *d)
494 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
501 s->spurious_vec = 0xff;
504 memset(s->isr, 0, sizeof(s->isr));
505 memset(s->tmr, 0, sizeof(s->tmr));
506 memset(s->irr, 0, sizeof(s->irr));
507 for(i = 0; i < APIC_LVT_NB; i++)
508 s->lvt[i] = 1 << 16; /* mask LVT */
510 memset(s->icr, 0, sizeof(s->icr));
513 s->initial_count = 0;
514 s->initial_count_load_time = 0;
516 s->wait_for_sipi = 1;
519 static void apic_startup(APICState *s, int vector_num)
521 s->sipi_vector = vector_num;
522 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
525 void apic_sipi(DeviceState *d)
527 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
529 cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
531 if (!s->wait_for_sipi)
533 cpu_x86_load_seg_cache_sipi(s->cpu_env, s->sipi_vector);
534 s->wait_for_sipi = 0;
537 static void apic_deliver(DeviceState *d, uint8_t dest, uint8_t dest_mode,
538 uint8_t delivery_mode, uint8_t vector_num,
539 uint8_t polarity, uint8_t trigger_mode)
541 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
542 uint32_t deliver_bitmask[MAX_APIC_WORDS];
543 int dest_shorthand = (s->icr[0] >> 18) & 3;
544 APICState *apic_iter;
546 switch (dest_shorthand) {
548 apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
551 memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask));
552 set_bit(deliver_bitmask, s->idx);
555 memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
558 memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
559 reset_bit(deliver_bitmask, s->idx);
563 switch (delivery_mode) {
566 int trig_mode = (s->icr[0] >> 15) & 1;
567 int level = (s->icr[0] >> 14) & 1;
568 if (level == 0 && trig_mode == 1) {
569 foreach_apic(apic_iter, deliver_bitmask,
570 apic_iter->arb_id = apic_iter->id );
577 foreach_apic(apic_iter, deliver_bitmask,
578 apic_startup(apic_iter, vector_num) );
582 apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, polarity,
586 int apic_get_interrupt(DeviceState *d)
588 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
591 /* if the APIC is installed or enabled, we let the 8259 handle the
595 if (!(s->spurious_vec & APIC_SV_ENABLE))
598 /* XXX: spurious IRQ handling */
599 intno = get_highest_priority_int(s->irr);
602 if (s->tpr && intno <= s->tpr)
603 return s->spurious_vec & 0xff;
604 reset_bit(s->irr, intno);
605 set_bit(s->isr, intno);
610 int apic_accept_pic_intr(DeviceState *d)
612 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
618 lvt0 = s->lvt[APIC_LVT_LINT0];
620 if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 ||
621 (lvt0 & APIC_LVT_MASKED) == 0)
627 static uint32_t apic_get_current_count(APICState *s)
631 d = (qemu_get_clock(vm_clock) - s->initial_count_load_time) >>
633 if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
635 val = s->initial_count - (d % ((uint64_t)s->initial_count + 1));
637 if (d >= s->initial_count)
640 val = s->initial_count - d;
645 static void apic_timer_update(APICState *s, int64_t current_time)
647 int64_t next_time, d;
649 if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
650 d = (current_time - s->initial_count_load_time) >>
652 if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
653 if (!s->initial_count)
655 d = ((d / ((uint64_t)s->initial_count + 1)) + 1) * ((uint64_t)s->initial_count + 1);
657 if (d >= s->initial_count)
659 d = (uint64_t)s->initial_count + 1;
661 next_time = s->initial_count_load_time + (d << s->count_shift);
662 qemu_mod_timer(s->timer, next_time);
663 s->next_time = next_time;
666 qemu_del_timer(s->timer);
670 static void apic_timer(void *opaque)
672 APICState *s = opaque;
674 apic_local_deliver(s, APIC_LVT_TIMER);
675 apic_timer_update(s, s->next_time);
678 static uint32_t apic_mem_readb(void *opaque, target_phys_addr_t addr)
683 static uint32_t apic_mem_readw(void *opaque, target_phys_addr_t addr)
688 static void apic_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
692 static void apic_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
696 static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr)
703 d = cpu_get_current_apic();
707 s = DO_UPCAST(APICState, busdev.qdev, d);
709 index = (addr >> 4) & 0xff;
714 case 0x03: /* version */
715 val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */
721 val = apic_get_arb_pri(s);
725 val = apic_get_ppr(s);
731 val = s->log_dest << 24;
734 val = s->dest_mode << 28;
737 val = s->spurious_vec;
740 val = s->isr[index & 7];
743 val = s->tmr[index & 7];
746 val = s->irr[index & 7];
753 val = s->icr[index & 1];
756 val = s->lvt[index - 0x32];
759 val = s->initial_count;
762 val = apic_get_current_count(s);
765 val = s->divide_conf;
768 s->esr |= ESR_ILLEGAL_ADDRESS;
772 DPRINTF("read: " TARGET_FMT_plx " = %08x\n", addr, val);
776 static void apic_send_msi(target_phys_addr_t addr, uint32 data)
778 uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
779 uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
780 uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
781 uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
782 uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
783 /* XXX: Ignore redirection hint. */
784 apic_deliver_irq(dest, dest_mode, delivery, vector, 0, trigger_mode);
787 static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
791 int index = (addr >> 4) & 0xff;
792 if (addr > 0xfff || !index) {
793 /* MSI and MMIO APIC are at the same memory location,
794 * but actually not on the global bus: MSI is on PCI bus
795 * APIC is connected directly to the CPU.
796 * Mapping them on the global bus happens to work because
797 * MSI registers are reserved in APIC MMIO and vice versa. */
798 apic_send_msi(addr, val);
802 d = cpu_get_current_apic();
806 s = DO_UPCAST(APICState, busdev.qdev, d);
808 DPRINTF("write: " TARGET_FMT_plx " = %08x\n", addr, val);
827 s->log_dest = val >> 24;
830 s->dest_mode = val >> 28;
833 s->spurious_vec = val & 0x1ff;
843 apic_deliver(d, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1,
844 (s->icr[0] >> 8) & 7, (s->icr[0] & 0xff),
845 (s->icr[0] >> 14) & 1, (s->icr[0] >> 15) & 1);
852 int n = index - 0x32;
854 if (n == APIC_LVT_TIMER)
855 apic_timer_update(s, qemu_get_clock(vm_clock));
859 s->initial_count = val;
860 s->initial_count_load_time = qemu_get_clock(vm_clock);
861 apic_timer_update(s, s->initial_count_load_time);
868 s->divide_conf = val & 0xb;
869 v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4);
870 s->count_shift = (v + 1) & 7;
874 s->esr |= ESR_ILLEGAL_ADDRESS;
879 /* This function is only used for old state version 1 and 2 */
880 static int apic_load_old(QEMUFile *f, void *opaque, int version_id)
882 APICState *s = opaque;
888 /* XXX: what if the base changes? (registered memory regions) */
889 qemu_get_be32s(f, &s->apicbase);
890 qemu_get_8s(f, &s->id);
891 qemu_get_8s(f, &s->arb_id);
892 qemu_get_8s(f, &s->tpr);
893 qemu_get_be32s(f, &s->spurious_vec);
894 qemu_get_8s(f, &s->log_dest);
895 qemu_get_8s(f, &s->dest_mode);
896 for (i = 0; i < 8; i++) {
897 qemu_get_be32s(f, &s->isr[i]);
898 qemu_get_be32s(f, &s->tmr[i]);
899 qemu_get_be32s(f, &s->irr[i]);
901 for (i = 0; i < APIC_LVT_NB; i++) {
902 qemu_get_be32s(f, &s->lvt[i]);
904 qemu_get_be32s(f, &s->esr);
905 qemu_get_be32s(f, &s->icr[0]);
906 qemu_get_be32s(f, &s->icr[1]);
907 qemu_get_be32s(f, &s->divide_conf);
908 s->count_shift=qemu_get_be32(f);
909 qemu_get_be32s(f, &s->initial_count);
910 s->initial_count_load_time=qemu_get_be64(f);
911 s->next_time=qemu_get_be64(f);
914 qemu_get_timer(f, s->timer);
918 static const VMStateDescription vmstate_apic = {
921 .minimum_version_id = 3,
922 .minimum_version_id_old = 1,
923 .load_state_old = apic_load_old,
924 .fields = (VMStateField []) {
925 VMSTATE_UINT32(apicbase, APICState),
926 VMSTATE_UINT8(id, APICState),
927 VMSTATE_UINT8(arb_id, APICState),
928 VMSTATE_UINT8(tpr, APICState),
929 VMSTATE_UINT32(spurious_vec, APICState),
930 VMSTATE_UINT8(log_dest, APICState),
931 VMSTATE_UINT8(dest_mode, APICState),
932 VMSTATE_UINT32_ARRAY(isr, APICState, 8),
933 VMSTATE_UINT32_ARRAY(tmr, APICState, 8),
934 VMSTATE_UINT32_ARRAY(irr, APICState, 8),
935 VMSTATE_UINT32_ARRAY(lvt, APICState, APIC_LVT_NB),
936 VMSTATE_UINT32(esr, APICState),
937 VMSTATE_UINT32_ARRAY(icr, APICState, 2),
938 VMSTATE_UINT32(divide_conf, APICState),
939 VMSTATE_INT32(count_shift, APICState),
940 VMSTATE_UINT32(initial_count, APICState),
941 VMSTATE_INT64(initial_count_load_time, APICState),
942 VMSTATE_INT64(next_time, APICState),
943 VMSTATE_TIMER(timer, APICState),
944 VMSTATE_END_OF_LIST()
948 static void apic_reset(DeviceState *d)
950 APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
953 bsp = cpu_is_bsp(s->cpu_env);
954 s->apicbase = 0xfee00000 |
955 (bsp ? MSR_IA32_APICBASE_BSP : 0) | MSR_IA32_APICBASE_ENABLE;
961 * LINT0 delivery mode on CPU #0 is set to ExtInt at initialization
962 * time typically by BIOS, so PIC interrupt can be delivered to the
963 * processor when local APIC is enabled.
965 s->lvt[APIC_LVT_LINT0] = 0x700;
969 static CPUReadMemoryFunc * const apic_mem_read[3] = {
975 static CPUWriteMemoryFunc * const apic_mem_write[3] = {
981 static int apic_init1(SysBusDevice *dev)
983 APICState *s = FROM_SYSBUS(APICState, dev);
985 static int last_apic_idx;
987 if (last_apic_idx >= MAX_APICS) {
990 apic_io_memory = cpu_register_io_memory(apic_mem_read,
991 apic_mem_write, NULL);
992 sysbus_init_mmio(dev, MSI_ADDR_SIZE, apic_io_memory);
994 s->timer = qemu_new_timer(vm_clock, apic_timer, s);
995 s->idx = last_apic_idx++;
996 local_apics[s->idx] = s;
1000 static SysBusDeviceInfo apic_info = {
1002 .qdev.name = "apic",
1003 .qdev.size = sizeof(APICState),
1004 .qdev.vmsd = &vmstate_apic,
1005 .qdev.reset = apic_reset,
1007 .qdev.props = (Property[]) {
1008 DEFINE_PROP_UINT8("id", APICState, id, -1),
1009 DEFINE_PROP_PTR("cpu_env", APICState, cpu_env),
1010 DEFINE_PROP_END_OF_LIST(),
1014 static void apic_register_devices(void)
1016 sysbus_register_withprop(&apic_info);
1019 device_init(apic_register_devices)