4
* Copyright (c) 2004-2005 Fabrice Bellard
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>
22
#include "qemu-timer.h"
23
#include "host-utils.h"
28
/* APIC Local Vector Table */
29
#define APIC_LVT_TIMER 0
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#define APIC_LVT_THERMAL 1
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#define APIC_LVT_PERFORM 2
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#define APIC_LVT_LINT0 3
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#define APIC_LVT_LINT1 4
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#define APIC_LVT_ERROR 5
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/* APIC delivery modes */
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#define APIC_DM_FIXED 0
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#define APIC_DM_LOWPRI 1
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#define APIC_DM_INIT 5
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#define APIC_DM_SIPI 6
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#define APIC_DM_EXTINT 7
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/* APIC destination mode */
47
#define APIC_DESTMODE_FLAT 0xf
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#define APIC_DESTMODE_CLUSTER 1
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#define APIC_TRIGGER_EDGE 0
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#define APIC_TRIGGER_LEVEL 1
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#define APIC_LVT_TIMER_PERIODIC (1<<17)
54
#define APIC_LVT_MASKED (1<<16)
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#define APIC_LVT_LEVEL_TRIGGER (1<<15)
56
#define APIC_LVT_REMOTE_IRR (1<<14)
57
#define APIC_INPUT_POLARITY (1<<13)
58
#define APIC_SEND_PENDING (1<<12)
60
#define ESR_ILLEGAL_ADDRESS (1 << 7)
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#define APIC_SV_DIRECTED_IO (1<<12)
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#define APIC_SV_ENABLE (1<<8)
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#define MAX_APIC_WORDS 8
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/* Intel APIC constants: from include/asm/msidef.h */
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#define MSI_DATA_VECTOR_SHIFT 0
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#define MSI_DATA_VECTOR_MASK 0x000000ff
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#define MSI_DATA_DELIVERY_MODE_SHIFT 8
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#define MSI_DATA_TRIGGER_SHIFT 15
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#define MSI_DATA_LEVEL_SHIFT 14
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#define MSI_ADDR_DEST_MODE_SHIFT 2
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#define MSI_ADDR_DEST_ID_SHIFT 12
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#define MSI_ADDR_DEST_ID_MASK 0x00ffff0
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#define MSI_ADDR_SIZE 0x100000
80
typedef struct APICState APICState;
84
MemoryRegion io_memory;
90
uint32_t spurious_vec;
93
uint32_t isr[8]; /* in service register */
94
uint32_t tmr[8]; /* trigger mode register */
95
uint32_t irr[8]; /* interrupt request register */
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uint32_t lvt[APIC_LVT_NB];
97
uint32_t esr; /* error register */
100
uint32_t divide_conf;
102
uint32_t initial_count;
103
int64_t initial_count_load_time, next_time;
110
static APICState *local_apics[MAX_APICS + 1];
111
static int apic_irq_delivered;
113
static void apic_set_irq(APICState *s, int vector_num, int trigger_mode);
114
static void apic_update_irq(APICState *s);
115
static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
116
uint8_t dest, uint8_t dest_mode);
118
/* Find first bit starting from msb */
119
static int fls_bit(uint32_t value)
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return 31 - clz32(value);
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/* Find first bit starting from lsb */
125
static int ffs_bit(uint32_t value)
130
static inline void set_bit(uint32_t *tab, int index)
134
mask = 1 << (index & 0x1f);
138
static inline void reset_bit(uint32_t *tab, int index)
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mask = 1 << (index & 0x1f);
146
static inline int get_bit(uint32_t *tab, int index)
150
mask = 1 << (index & 0x1f);
151
return !!(tab[i] & mask);
154
static void apic_local_deliver(APICState *s, int vector)
156
uint32_t lvt = s->lvt[vector];
159
trace_apic_local_deliver(vector, (lvt >> 8) & 7);
161
if (lvt & APIC_LVT_MASKED)
164
switch ((lvt >> 8) & 7) {
166
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SMI);
170
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_NMI);
174
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
178
trigger_mode = APIC_TRIGGER_EDGE;
179
if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) &&
180
(lvt & APIC_LVT_LEVEL_TRIGGER))
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trigger_mode = APIC_TRIGGER_LEVEL;
182
apic_set_irq(s, lvt & 0xff, trigger_mode);
186
void apic_deliver_pic_intr(DeviceState *d, int level)
188
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
191
apic_local_deliver(s, APIC_LVT_LINT0);
193
uint32_t lvt = s->lvt[APIC_LVT_LINT0];
195
switch ((lvt >> 8) & 7) {
197
if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
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reset_bit(s->irr, lvt & 0xff);
202
cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
208
#define foreach_apic(apic, deliver_bitmask, code) \
210
int __i, __j, __mask;\
211
for(__i = 0; __i < MAX_APIC_WORDS; __i++) {\
212
__mask = deliver_bitmask[__i];\
214
for(__j = 0; __j < 32; __j++) {\
215
if (__mask & (1 << __j)) {\
216
apic = local_apics[__i * 32 + __j];\
226
static void apic_bus_deliver(const uint32_t *deliver_bitmask,
227
uint8_t delivery_mode, uint8_t vector_num,
228
uint8_t trigger_mode)
230
APICState *apic_iter;
232
switch (delivery_mode) {
234
/* XXX: search for focus processor, arbitration */
238
for(i = 0; i < MAX_APIC_WORDS; i++) {
239
if (deliver_bitmask[i]) {
240
d = i * 32 + ffs_bit(deliver_bitmask[i]);
245
apic_iter = local_apics[d];
247
apic_set_irq(apic_iter, vector_num, trigger_mode);
257
foreach_apic(apic_iter, deliver_bitmask,
258
cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_SMI) );
262
foreach_apic(apic_iter, deliver_bitmask,
263
cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_NMI) );
267
/* normal INIT IPI sent to processors */
268
foreach_apic(apic_iter, deliver_bitmask,
269
cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_INIT) );
273
/* handled in I/O APIC code */
280
foreach_apic(apic_iter, deliver_bitmask,
281
apic_set_irq(apic_iter, vector_num, trigger_mode) );
284
void apic_deliver_irq(uint8_t dest, uint8_t dest_mode, uint8_t delivery_mode,
285
uint8_t vector_num, uint8_t trigger_mode)
287
uint32_t deliver_bitmask[MAX_APIC_WORDS];
289
trace_apic_deliver_irq(dest, dest_mode, delivery_mode, vector_num,
292
apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
293
apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
296
void cpu_set_apic_base(DeviceState *d, uint64_t val)
298
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
300
trace_cpu_set_apic_base(val);
304
s->apicbase = (val & 0xfffff000) |
305
(s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
306
/* if disabled, cannot be enabled again */
307
if (!(val & MSR_IA32_APICBASE_ENABLE)) {
308
s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
309
cpu_clear_apic_feature(s->cpu_env);
310
s->spurious_vec &= ~APIC_SV_ENABLE;
314
uint64_t cpu_get_apic_base(DeviceState *d)
316
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
318
trace_cpu_get_apic_base(s ? (uint64_t)s->apicbase: 0);
320
return s ? s->apicbase : 0;
323
void cpu_set_apic_tpr(DeviceState *d, uint8_t val)
325
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
329
s->tpr = (val & 0x0f) << 4;
333
uint8_t cpu_get_apic_tpr(DeviceState *d)
335
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
337
return s ? s->tpr >> 4 : 0;
340
/* return -1 if no bit is set */
341
static int get_highest_priority_int(uint32_t *tab)
344
for(i = 7; i >= 0; i--) {
346
return i * 32 + fls_bit(tab[i]);
352
static int apic_get_ppr(APICState *s)
357
isrv = get_highest_priority_int(s->isr);
368
static int apic_get_arb_pri(APICState *s)
370
/* XXX: arbitration */
376
* <0 - low prio interrupt,
378
* >0 - interrupt number
380
static int apic_irq_pending(APICState *s)
383
irrv = get_highest_priority_int(s->irr);
387
ppr = apic_get_ppr(s);
388
if (ppr && (irrv & 0xf0) <= (ppr & 0xf0)) {
395
/* signal the CPU if an irq is pending */
396
static void apic_update_irq(APICState *s)
398
if (!(s->spurious_vec & APIC_SV_ENABLE)) {
401
if (apic_irq_pending(s) > 0) {
402
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
403
} else if (apic_accept_pic_intr(&s->busdev.qdev) &&
404
pic_get_output(isa_pic)) {
405
apic_deliver_pic_intr(&s->busdev.qdev, 1);
409
void apic_reset_irq_delivered(void)
411
trace_apic_reset_irq_delivered(apic_irq_delivered);
413
apic_irq_delivered = 0;
416
int apic_get_irq_delivered(void)
418
trace_apic_get_irq_delivered(apic_irq_delivered);
420
return apic_irq_delivered;
423
static void apic_set_irq(APICState *s, int vector_num, int trigger_mode)
425
apic_irq_delivered += !get_bit(s->irr, vector_num);
427
trace_apic_set_irq(apic_irq_delivered);
429
set_bit(s->irr, vector_num);
431
set_bit(s->tmr, vector_num);
433
reset_bit(s->tmr, vector_num);
437
static void apic_eoi(APICState *s)
440
isrv = get_highest_priority_int(s->isr);
443
reset_bit(s->isr, isrv);
444
if (!(s->spurious_vec & APIC_SV_DIRECTED_IO) && get_bit(s->tmr, isrv)) {
445
ioapic_eoi_broadcast(isrv);
450
static int apic_find_dest(uint8_t dest)
452
APICState *apic = local_apics[dest];
455
if (apic && apic->id == dest)
456
return dest; /* shortcut in case apic->id == apic->idx */
458
for (i = 0; i < MAX_APICS; i++) {
459
apic = local_apics[i];
460
if (apic && apic->id == dest)
469
static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
470
uint8_t dest, uint8_t dest_mode)
472
APICState *apic_iter;
475
if (dest_mode == 0) {
477
memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t));
479
int idx = apic_find_dest(dest);
480
memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
482
set_bit(deliver_bitmask, idx);
485
/* XXX: cluster mode */
486
memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
487
for(i = 0; i < MAX_APICS; i++) {
488
apic_iter = local_apics[i];
490
if (apic_iter->dest_mode == 0xf) {
491
if (dest & apic_iter->log_dest)
492
set_bit(deliver_bitmask, i);
493
} else if (apic_iter->dest_mode == 0x0) {
494
if ((dest & 0xf0) == (apic_iter->log_dest & 0xf0) &&
495
(dest & apic_iter->log_dest & 0x0f)) {
496
set_bit(deliver_bitmask, i);
506
void apic_init_reset(DeviceState *d)
508
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
515
s->spurious_vec = 0xff;
518
memset(s->isr, 0, sizeof(s->isr));
519
memset(s->tmr, 0, sizeof(s->tmr));
520
memset(s->irr, 0, sizeof(s->irr));
521
for(i = 0; i < APIC_LVT_NB; i++)
522
s->lvt[i] = 1 << 16; /* mask LVT */
524
memset(s->icr, 0, sizeof(s->icr));
527
s->initial_count = 0;
528
s->initial_count_load_time = 0;
530
s->wait_for_sipi = 1;
533
static void apic_startup(APICState *s, int vector_num)
535
s->sipi_vector = vector_num;
536
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
539
void apic_sipi(DeviceState *d)
541
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
543
cpu_reset_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
545
if (!s->wait_for_sipi)
547
cpu_x86_load_seg_cache_sipi(s->cpu_env, s->sipi_vector);
548
s->wait_for_sipi = 0;
551
static void apic_deliver(DeviceState *d, uint8_t dest, uint8_t dest_mode,
552
uint8_t delivery_mode, uint8_t vector_num,
553
uint8_t trigger_mode)
555
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
556
uint32_t deliver_bitmask[MAX_APIC_WORDS];
557
int dest_shorthand = (s->icr[0] >> 18) & 3;
558
APICState *apic_iter;
560
switch (dest_shorthand) {
562
apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
565
memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask));
566
set_bit(deliver_bitmask, s->idx);
569
memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
572
memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
573
reset_bit(deliver_bitmask, s->idx);
577
switch (delivery_mode) {
580
int trig_mode = (s->icr[0] >> 15) & 1;
581
int level = (s->icr[0] >> 14) & 1;
582
if (level == 0 && trig_mode == 1) {
583
foreach_apic(apic_iter, deliver_bitmask,
584
apic_iter->arb_id = apic_iter->id );
591
foreach_apic(apic_iter, deliver_bitmask,
592
apic_startup(apic_iter, vector_num) );
596
apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
599
int apic_get_interrupt(DeviceState *d)
601
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
604
/* if the APIC is installed or enabled, we let the 8259 handle the
608
if (!(s->spurious_vec & APIC_SV_ENABLE))
611
intno = apic_irq_pending(s);
615
} else if (intno < 0) {
616
return s->spurious_vec & 0xff;
618
reset_bit(s->irr, intno);
619
set_bit(s->isr, intno);
624
int apic_accept_pic_intr(DeviceState *d)
626
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
632
lvt0 = s->lvt[APIC_LVT_LINT0];
634
if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 ||
635
(lvt0 & APIC_LVT_MASKED) == 0)
641
static uint32_t apic_get_current_count(APICState *s)
645
d = (qemu_get_clock_ns(vm_clock) - s->initial_count_load_time) >>
647
if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
649
val = s->initial_count - (d % ((uint64_t)s->initial_count + 1));
651
if (d >= s->initial_count)
654
val = s->initial_count - d;
659
static void apic_timer_update(APICState *s, int64_t current_time)
661
int64_t next_time, d;
663
if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
664
d = (current_time - s->initial_count_load_time) >>
666
if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
667
if (!s->initial_count)
669
d = ((d / ((uint64_t)s->initial_count + 1)) + 1) * ((uint64_t)s->initial_count + 1);
671
if (d >= s->initial_count)
673
d = (uint64_t)s->initial_count + 1;
675
next_time = s->initial_count_load_time + (d << s->count_shift);
676
qemu_mod_timer(s->timer, next_time);
677
s->next_time = next_time;
680
qemu_del_timer(s->timer);
684
static void apic_timer(void *opaque)
686
APICState *s = opaque;
688
apic_local_deliver(s, APIC_LVT_TIMER);
689
apic_timer_update(s, s->next_time);
692
static uint32_t apic_mem_readb(void *opaque, target_phys_addr_t addr)
697
static uint32_t apic_mem_readw(void *opaque, target_phys_addr_t addr)
702
static void apic_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
706
static void apic_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
710
static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr)
717
d = cpu_get_current_apic();
721
s = DO_UPCAST(APICState, busdev.qdev, d);
723
index = (addr >> 4) & 0xff;
728
case 0x03: /* version */
729
val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */
735
val = apic_get_arb_pri(s);
739
val = apic_get_ppr(s);
745
val = s->log_dest << 24;
748
val = s->dest_mode << 28;
751
val = s->spurious_vec;
754
val = s->isr[index & 7];
757
val = s->tmr[index & 7];
760
val = s->irr[index & 7];
767
val = s->icr[index & 1];
770
val = s->lvt[index - 0x32];
773
val = s->initial_count;
776
val = apic_get_current_count(s);
779
val = s->divide_conf;
782
s->esr |= ESR_ILLEGAL_ADDRESS;
786
trace_apic_mem_readl(addr, val);
790
static void apic_send_msi(target_phys_addr_t addr, uint32_t data)
792
uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
793
uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
794
uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
795
uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
796
uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
797
/* XXX: Ignore redirection hint. */
798
apic_deliver_irq(dest, dest_mode, delivery, vector, trigger_mode);
801
static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
805
int index = (addr >> 4) & 0xff;
806
if (addr > 0xfff || !index) {
807
/* MSI and MMIO APIC are at the same memory location,
808
* but actually not on the global bus: MSI is on PCI bus
809
* APIC is connected directly to the CPU.
810
* Mapping them on the global bus happens to work because
811
* MSI registers are reserved in APIC MMIO and vice versa. */
812
apic_send_msi(addr, val);
816
d = cpu_get_current_apic();
820
s = DO_UPCAST(APICState, busdev.qdev, d);
822
trace_apic_mem_writel(addr, val);
841
s->log_dest = val >> 24;
844
s->dest_mode = val >> 28;
847
s->spurious_vec = val & 0x1ff;
857
apic_deliver(d, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1,
858
(s->icr[0] >> 8) & 7, (s->icr[0] & 0xff),
859
(s->icr[0] >> 15) & 1);
866
int n = index - 0x32;
868
if (n == APIC_LVT_TIMER)
869
apic_timer_update(s, qemu_get_clock_ns(vm_clock));
873
s->initial_count = val;
874
s->initial_count_load_time = qemu_get_clock_ns(vm_clock);
875
apic_timer_update(s, s->initial_count_load_time);
882
s->divide_conf = val & 0xb;
883
v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4);
884
s->count_shift = (v + 1) & 7;
888
s->esr |= ESR_ILLEGAL_ADDRESS;
893
/* This function is only used for old state version 1 and 2 */
894
static int apic_load_old(QEMUFile *f, void *opaque, int version_id)
896
APICState *s = opaque;
902
/* XXX: what if the base changes? (registered memory regions) */
903
qemu_get_be32s(f, &s->apicbase);
904
qemu_get_8s(f, &s->id);
905
qemu_get_8s(f, &s->arb_id);
906
qemu_get_8s(f, &s->tpr);
907
qemu_get_be32s(f, &s->spurious_vec);
908
qemu_get_8s(f, &s->log_dest);
909
qemu_get_8s(f, &s->dest_mode);
910
for (i = 0; i < 8; i++) {
911
qemu_get_be32s(f, &s->isr[i]);
912
qemu_get_be32s(f, &s->tmr[i]);
913
qemu_get_be32s(f, &s->irr[i]);
915
for (i = 0; i < APIC_LVT_NB; i++) {
916
qemu_get_be32s(f, &s->lvt[i]);
918
qemu_get_be32s(f, &s->esr);
919
qemu_get_be32s(f, &s->icr[0]);
920
qemu_get_be32s(f, &s->icr[1]);
921
qemu_get_be32s(f, &s->divide_conf);
922
s->count_shift=qemu_get_be32(f);
923
qemu_get_be32s(f, &s->initial_count);
924
s->initial_count_load_time=qemu_get_be64(f);
925
s->next_time=qemu_get_be64(f);
928
qemu_get_timer(f, s->timer);
932
static const VMStateDescription vmstate_apic = {
935
.minimum_version_id = 3,
936
.minimum_version_id_old = 1,
937
.load_state_old = apic_load_old,
938
.fields = (VMStateField []) {
939
VMSTATE_UINT32(apicbase, APICState),
940
VMSTATE_UINT8(id, APICState),
941
VMSTATE_UINT8(arb_id, APICState),
942
VMSTATE_UINT8(tpr, APICState),
943
VMSTATE_UINT32(spurious_vec, APICState),
944
VMSTATE_UINT8(log_dest, APICState),
945
VMSTATE_UINT8(dest_mode, APICState),
946
VMSTATE_UINT32_ARRAY(isr, APICState, 8),
947
VMSTATE_UINT32_ARRAY(tmr, APICState, 8),
948
VMSTATE_UINT32_ARRAY(irr, APICState, 8),
949
VMSTATE_UINT32_ARRAY(lvt, APICState, APIC_LVT_NB),
950
VMSTATE_UINT32(esr, APICState),
951
VMSTATE_UINT32_ARRAY(icr, APICState, 2),
952
VMSTATE_UINT32(divide_conf, APICState),
953
VMSTATE_INT32(count_shift, APICState),
954
VMSTATE_UINT32(initial_count, APICState),
955
VMSTATE_INT64(initial_count_load_time, APICState),
956
VMSTATE_INT64(next_time, APICState),
957
VMSTATE_TIMER(timer, APICState),
958
VMSTATE_END_OF_LIST()
962
static void apic_reset(DeviceState *d)
964
APICState *s = DO_UPCAST(APICState, busdev.qdev, d);
967
bsp = cpu_is_bsp(s->cpu_env);
968
s->apicbase = 0xfee00000 |
969
(bsp ? MSR_IA32_APICBASE_BSP : 0) | MSR_IA32_APICBASE_ENABLE;
975
* LINT0 delivery mode on CPU #0 is set to ExtInt at initialization
976
* time typically by BIOS, so PIC interrupt can be delivered to the
977
* processor when local APIC is enabled.
979
s->lvt[APIC_LVT_LINT0] = 0x700;
983
static const MemoryRegionOps apic_io_ops = {
985
.read = { apic_mem_readb, apic_mem_readw, apic_mem_readl, },
986
.write = { apic_mem_writeb, apic_mem_writew, apic_mem_writel, },
988
.endianness = DEVICE_NATIVE_ENDIAN,
991
static int apic_init1(SysBusDevice *dev)
993
APICState *s = FROM_SYSBUS(APICState, dev);
994
static int last_apic_idx;
996
if (last_apic_idx >= MAX_APICS) {
999
memory_region_init_io(&s->io_memory, &apic_io_ops, s, "apic",
1001
sysbus_init_mmio_region(dev, &s->io_memory);
1003
s->timer = qemu_new_timer_ns(vm_clock, apic_timer, s);
1004
s->idx = last_apic_idx++;
1005
local_apics[s->idx] = s;
1009
static SysBusDeviceInfo apic_info = {
1011
.qdev.name = "apic",
1012
.qdev.size = sizeof(APICState),
1013
.qdev.vmsd = &vmstate_apic,
1014
.qdev.reset = apic_reset,
1016
.qdev.props = (Property[]) {
1017
DEFINE_PROP_UINT8("id", APICState, id, -1),
1018
DEFINE_PROP_PTR("cpu_env", APICState, cpu_env),
1019
DEFINE_PROP_END_OF_LIST(),
1023
static void apic_register_devices(void)
1025
sysbus_register_withprop(&apic_info);
1028
device_init(apic_register_devices)