57
85
kvm_arm_gic_set_irq(s->num_irq, irq, level);
88
#define KVM_VGIC_ATTR(reg, typer) \
89
((typer & KVM_DEV_ARM_VGIC_V3_MPIDR_MASK) | (reg))
91
static inline void kvm_gicd_access(GICv3State *s, int offset,
92
uint32_t *val, bool write)
94
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_DIST_REGS,
95
KVM_VGIC_ATTR(offset, 0),
99
static inline void kvm_gicr_access(GICv3State *s, int offset, int cpu,
100
uint32_t *val, bool write)
102
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_REDIST_REGS,
103
KVM_VGIC_ATTR(offset, s->cpu[cpu].gicr_typer),
107
static inline void kvm_gicc_access(GICv3State *s, uint64_t reg, int cpu,
108
uint64_t *val, bool write)
110
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS,
111
KVM_VGIC_ATTR(reg, s->cpu[cpu].gicr_typer),
115
static inline void kvm_gic_line_level_access(GICv3State *s, int irq, int cpu,
116
uint32_t *val, bool write)
118
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO,
119
KVM_VGIC_ATTR(irq, s->cpu[cpu].gicr_typer) |
120
(VGIC_LEVEL_INFO_LINE_LEVEL <<
121
KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT),
125
/* Loop through each distributor IRQ related register; since bits
126
* corresponding to SPIs and PPIs are RAZ/WI when affinity routing
127
* is enabled, we skip those.
129
#define for_each_dist_irq_reg(_irq, _max, _field_width) \
130
for (_irq = GIC_INTERNAL; _irq < _max; _irq += (32 / _field_width))
132
static void kvm_dist_get_priority(GICv3State *s, uint32_t offset, uint8_t *bmp)
134
uint32_t reg, *field;
137
field = (uint32_t *)bmp;
138
for_each_dist_irq_reg(irq, s->num_irq, 8) {
139
kvm_gicd_access(s, offset, ®, false);
146
static void kvm_dist_put_priority(GICv3State *s, uint32_t offset, uint8_t *bmp)
148
uint32_t reg, *field;
151
field = (uint32_t *)bmp;
152
for_each_dist_irq_reg(irq, s->num_irq, 8) {
154
kvm_gicd_access(s, offset, ®, true);
160
static void kvm_dist_get_edge_trigger(GICv3State *s, uint32_t offset,
166
for_each_dist_irq_reg(irq, s->num_irq, 2) {
167
kvm_gicd_access(s, offset, ®, false);
168
reg = half_unshuffle32(reg >> 1);
172
*gic_bmp_ptr32(bmp, irq) |= reg;
177
static void kvm_dist_put_edge_trigger(GICv3State *s, uint32_t offset,
183
for_each_dist_irq_reg(irq, s->num_irq, 2) {
184
reg = *gic_bmp_ptr32(bmp, irq);
186
reg = (reg & 0xffff0000) >> 16;
190
reg = half_shuffle32(reg) << 1;
191
kvm_gicd_access(s, offset, ®, true);
196
static void kvm_gic_get_line_level_bmp(GICv3State *s, uint32_t *bmp)
201
for_each_dist_irq_reg(irq, s->num_irq, 1) {
202
kvm_gic_line_level_access(s, irq, 0, ®, false);
203
*gic_bmp_ptr32(bmp, irq) = reg;
207
static void kvm_gic_put_line_level_bmp(GICv3State *s, uint32_t *bmp)
212
for_each_dist_irq_reg(irq, s->num_irq, 1) {
213
reg = *gic_bmp_ptr32(bmp, irq);
214
kvm_gic_line_level_access(s, irq, 0, ®, true);
218
/* Read a bitmap register group from the kernel VGIC. */
219
static void kvm_dist_getbmp(GICv3State *s, uint32_t offset, uint32_t *bmp)
224
for_each_dist_irq_reg(irq, s->num_irq, 1) {
225
kvm_gicd_access(s, offset, ®, false);
226
*gic_bmp_ptr32(bmp, irq) = reg;
231
static void kvm_dist_putbmp(GICv3State *s, uint32_t offset,
232
uint32_t clroffset, uint32_t *bmp)
237
for_each_dist_irq_reg(irq, s->num_irq, 1) {
238
/* If this bitmap is a set/clear register pair, first write to the
239
* clear-reg to clear all bits before using the set-reg to write
242
if (clroffset != 0) {
244
kvm_gicd_access(s, clroffset, ®, true);
246
reg = *gic_bmp_ptr32(bmp, irq);
247
kvm_gicd_access(s, offset, ®, true);
252
static void kvm_arm_gicv3_check(GICv3State *s)
257
/* Sanity checking s->num_irq */
258
kvm_gicd_access(s, GICD_TYPER, ®, false);
259
num_irq = ((reg & 0x1f) + 1) * 32;
261
if (num_irq < s->num_irq) {
262
error_report("Model requests %u IRQs, but kernel supports max %u",
263
s->num_irq, num_irq);
60
268
static void kvm_arm_gicv3_put(GICv3State *s)
63
DPRINTF("Cannot put kernel gic state, no kernel interface\n");
270
uint32_t regl, regh, reg;
271
uint64_t reg64, redist_typer;
274
kvm_arm_gicv3_check(s);
276
kvm_gicr_access(s, GICR_TYPER, 0, ®l, false);
277
kvm_gicr_access(s, GICR_TYPER + 4, 0, ®h, false);
278
redist_typer = ((uint64_t)regh << 32) | regl;
281
kvm_gicd_access(s, GICD_CTLR, ®, true);
283
if (redist_typer & GICR_TYPER_PLPIS) {
284
/* Set base addresses before LPIs are enabled by GICR_CTLR write */
285
for (ncpu = 0; ncpu < s->num_cpu; ncpu++) {
286
GICv3CPUState *c = &s->cpu[ncpu];
288
reg64 = c->gicr_propbaser;
289
regl = (uint32_t)reg64;
290
kvm_gicr_access(s, GICR_PROPBASER, ncpu, ®l, true);
291
regh = (uint32_t)(reg64 >> 32);
292
kvm_gicr_access(s, GICR_PROPBASER + 4, ncpu, ®h, true);
294
reg64 = c->gicr_pendbaser;
295
if (!c->gicr_ctlr & GICR_CTLR_ENABLE_LPIS) {
296
/* Setting PTZ is advised if LPIs are disabled, to reduce
297
* GIC initialization time.
299
reg64 |= GICR_PENDBASER_PTZ;
301
regl = (uint32_t)reg64;
302
kvm_gicr_access(s, GICR_PENDBASER, ncpu, ®l, true);
303
regh = (uint32_t)(reg64 >> 32);
304
kvm_gicr_access(s, GICR_PENDBASER + 4, ncpu, ®h, true);
308
/* Redistributor state (one per CPU) */
310
for (ncpu = 0; ncpu < s->num_cpu; ncpu++) {
311
GICv3CPUState *c = &s->cpu[ncpu];
314
kvm_gicr_access(s, GICR_CTLR, ncpu, ®, true);
316
reg = c->gicr_statusr[GICV3_NS];
317
kvm_gicr_access(s, GICR_STATUSR, ncpu, ®, true);
320
kvm_gicr_access(s, GICR_WAKER, ncpu, ®, true);
322
reg = c->gicr_igroupr0;
323
kvm_gicr_access(s, GICR_IGROUPR0, ncpu, ®, true);
326
kvm_gicr_access(s, GICR_ICENABLER0, ncpu, ®, true);
327
reg = c->gicr_ienabler0;
328
kvm_gicr_access(s, GICR_ISENABLER0, ncpu, ®, true);
330
/* Restore config before pending so we treat level/edge correctly */
331
reg = half_shuffle32(c->edge_trigger >> 16) << 1;
332
kvm_gicr_access(s, GICR_ICFGR1, ncpu, ®, true);
335
kvm_gic_line_level_access(s, 0, ncpu, ®, true);
338
kvm_gicr_access(s, GICR_ICPENDR0, ncpu, ®, true);
339
reg = c->gicr_ipendr0;
340
kvm_gicr_access(s, GICR_ISPENDR0, ncpu, ®, true);
343
kvm_gicr_access(s, GICR_ICACTIVER0, ncpu, ®, true);
344
reg = c->gicr_iactiver0;
345
kvm_gicr_access(s, GICR_ISACTIVER0, ncpu, ®, true);
347
for (i = 0; i < GIC_INTERNAL; i += 4) {
348
reg = c->gicr_ipriorityr[i] |
349
(c->gicr_ipriorityr[i + 1] << 8) |
350
(c->gicr_ipriorityr[i + 2] << 16) |
351
(c->gicr_ipriorityr[i + 3] << 24);
352
kvm_gicr_access(s, GICR_IPRIORITYR + i, ncpu, ®, true);
356
/* Distributor state (shared between all CPUs */
357
reg = s->gicd_statusr[GICV3_NS];
358
kvm_gicd_access(s, GICD_STATUSR, ®, true);
360
/* s->enable bitmap -> GICD_ISENABLERn */
361
kvm_dist_putbmp(s, GICD_ISENABLER, GICD_ICENABLER, s->enabled);
363
/* s->group bitmap -> GICD_IGROUPRn */
364
kvm_dist_putbmp(s, GICD_IGROUPR, 0, s->group);
366
/* Restore targets before pending to ensure the pending state is set on
367
* the appropriate CPU interfaces in the kernel
370
/* s->gicd_irouter[irq] -> GICD_IROUTERn
371
* We can't use kvm_dist_put() here because the registers are 64-bit
373
for (i = GIC_INTERNAL; i < s->num_irq; i++) {
376
offset = GICD_IROUTER + (sizeof(uint32_t) * i);
377
reg = (uint32_t)s->gicd_irouter[i];
378
kvm_gicd_access(s, offset, ®, true);
380
offset = GICD_IROUTER + (sizeof(uint32_t) * i) + 4;
381
reg = (uint32_t)(s->gicd_irouter[i] >> 32);
382
kvm_gicd_access(s, offset, ®, true);
385
/* s->trigger bitmap -> GICD_ICFGRn
386
* (restore configuration registers before pending IRQs so we treat
387
* level/edge correctly)
389
kvm_dist_put_edge_trigger(s, GICD_ICFGR, s->edge_trigger);
391
/* s->level bitmap -> line_level */
392
kvm_gic_put_line_level_bmp(s, s->level);
394
/* s->pending bitmap -> GICD_ISPENDRn */
395
kvm_dist_putbmp(s, GICD_ISPENDR, GICD_ICPENDR, s->pending);
397
/* s->active bitmap -> GICD_ISACTIVERn */
398
kvm_dist_putbmp(s, GICD_ISACTIVER, GICD_ICACTIVER, s->active);
400
/* s->gicd_ipriority[] -> GICD_IPRIORITYRn */
401
kvm_dist_put_priority(s, GICD_IPRIORITYR, s->gicd_ipriority);
403
/* CPU Interface state (one per CPU) */
405
for (ncpu = 0; ncpu < s->num_cpu; ncpu++) {
406
GICv3CPUState *c = &s->cpu[ncpu];
409
kvm_gicc_access(s, ICC_SRE_EL1, ncpu, &c->icc_sre_el1, true);
410
kvm_gicc_access(s, ICC_CTLR_EL1, ncpu,
411
&c->icc_ctlr_el1[GICV3_NS], true);
412
kvm_gicc_access(s, ICC_IGRPEN0_EL1, ncpu,
413
&c->icc_igrpen[GICV3_G0], true);
414
kvm_gicc_access(s, ICC_IGRPEN1_EL1, ncpu,
415
&c->icc_igrpen[GICV3_G1NS], true);
416
kvm_gicc_access(s, ICC_PMR_EL1, ncpu, &c->icc_pmr_el1, true);
417
kvm_gicc_access(s, ICC_BPR0_EL1, ncpu, &c->icc_bpr[GICV3_G0], true);
418
kvm_gicc_access(s, ICC_BPR1_EL1, ncpu, &c->icc_bpr[GICV3_G1NS], true);
420
num_pri_bits = ((c->icc_ctlr_el1[GICV3_NS] &
421
ICC_CTLR_EL1_PRIBITS_MASK) >>
422
ICC_CTLR_EL1_PRIBITS_SHIFT) + 1;
424
switch (num_pri_bits) {
426
reg64 = c->icc_apr[GICV3_G0][3];
427
kvm_gicc_access(s, ICC_AP0R_EL1(3), ncpu, ®64, true);
428
reg64 = c->icc_apr[GICV3_G0][2];
429
kvm_gicc_access(s, ICC_AP0R_EL1(2), ncpu, ®64, true);
431
reg64 = c->icc_apr[GICV3_G0][1];
432
kvm_gicc_access(s, ICC_AP0R_EL1(1), ncpu, ®64, true);
434
reg64 = c->icc_apr[GICV3_G0][0];
435
kvm_gicc_access(s, ICC_AP0R_EL1(0), ncpu, ®64, true);
438
switch (num_pri_bits) {
440
reg64 = c->icc_apr[GICV3_G1NS][3];
441
kvm_gicc_access(s, ICC_AP1R_EL1(3), ncpu, ®64, true);
442
reg64 = c->icc_apr[GICV3_G1NS][2];
443
kvm_gicc_access(s, ICC_AP1R_EL1(2), ncpu, ®64, true);
445
reg64 = c->icc_apr[GICV3_G1NS][1];
446
kvm_gicc_access(s, ICC_AP1R_EL1(1), ncpu, ®64, true);
448
reg64 = c->icc_apr[GICV3_G1NS][0];
449
kvm_gicc_access(s, ICC_AP1R_EL1(0), ncpu, ®64, true);
66
454
static void kvm_arm_gicv3_get(GICv3State *s)
69
DPRINTF("Cannot get kernel gic state, no kernel interface\n");
456
uint32_t regl, regh, reg;
457
uint64_t reg64, redist_typer;
460
kvm_arm_gicv3_check(s);
462
kvm_gicr_access(s, GICR_TYPER, 0, ®l, false);
463
kvm_gicr_access(s, GICR_TYPER + 4, 0, ®h, false);
464
redist_typer = ((uint64_t)regh << 32) | regl;
466
kvm_gicd_access(s, GICD_CTLR, ®, false);
469
/* Redistributor state (one per CPU) */
471
for (ncpu = 0; ncpu < s->num_cpu; ncpu++) {
472
GICv3CPUState *c = &s->cpu[ncpu];
474
kvm_gicr_access(s, GICR_CTLR, ncpu, ®, false);
477
kvm_gicr_access(s, GICR_STATUSR, ncpu, ®, false);
478
c->gicr_statusr[GICV3_NS] = reg;
480
kvm_gicr_access(s, GICR_WAKER, ncpu, ®, false);
483
kvm_gicr_access(s, GICR_IGROUPR0, ncpu, ®, false);
484
c->gicr_igroupr0 = reg;
485
kvm_gicr_access(s, GICR_ISENABLER0, ncpu, ®, false);
486
c->gicr_ienabler0 = reg;
487
kvm_gicr_access(s, GICR_ICFGR1, ncpu, ®, false);
488
c->edge_trigger = half_unshuffle32(reg >> 1) << 16;
489
kvm_gic_line_level_access(s, 0, ncpu, ®, false);
491
kvm_gicr_access(s, GICR_ISPENDR0, ncpu, ®, false);
492
c->gicr_ipendr0 = reg;
493
kvm_gicr_access(s, GICR_ISACTIVER0, ncpu, ®, false);
494
c->gicr_iactiver0 = reg;
496
for (i = 0; i < GIC_INTERNAL; i += 4) {
497
kvm_gicr_access(s, GICR_IPRIORITYR + i, ncpu, ®, false);
498
c->gicr_ipriorityr[i] = extract32(reg, 0, 8);
499
c->gicr_ipriorityr[i + 1] = extract32(reg, 8, 8);
500
c->gicr_ipriorityr[i + 2] = extract32(reg, 16, 8);
501
c->gicr_ipriorityr[i + 3] = extract32(reg, 24, 8);
505
if (redist_typer & GICR_TYPER_PLPIS) {
506
for (ncpu = 0; ncpu < s->num_cpu; ncpu++) {
507
GICv3CPUState *c = &s->cpu[ncpu];
509
kvm_gicr_access(s, GICR_PROPBASER, ncpu, ®l, false);
510
kvm_gicr_access(s, GICR_PROPBASER + 4, ncpu, ®h, false);
511
c->gicr_propbaser = ((uint64_t)regh << 32) | regl;
513
kvm_gicr_access(s, GICR_PENDBASER, ncpu, ®l, false);
514
kvm_gicr_access(s, GICR_PENDBASER + 4, ncpu, ®h, false);
515
c->gicr_pendbaser = ((uint64_t)regh << 32) | regl;
519
/* Distributor state (shared between all CPUs */
521
kvm_gicd_access(s, GICD_STATUSR, ®, false);
522
s->gicd_statusr[GICV3_NS] = reg;
524
/* GICD_IGROUPRn -> s->group bitmap */
525
kvm_dist_getbmp(s, GICD_IGROUPR, s->group);
527
/* GICD_ISENABLERn -> s->enabled bitmap */
528
kvm_dist_getbmp(s, GICD_ISENABLER, s->enabled);
530
/* Line level of irq */
531
kvm_gic_get_line_level_bmp(s, s->level);
532
/* GICD_ISPENDRn -> s->pending bitmap */
533
kvm_dist_getbmp(s, GICD_ISPENDR, s->pending);
535
/* GICD_ISACTIVERn -> s->active bitmap */
536
kvm_dist_getbmp(s, GICD_ISACTIVER, s->active);
538
/* GICD_ICFGRn -> s->trigger bitmap */
539
kvm_dist_get_edge_trigger(s, GICD_ICFGR, s->edge_trigger);
541
/* GICD_IPRIORITYRn -> s->gicd_ipriority[] */
542
kvm_dist_get_priority(s, GICD_IPRIORITYR, s->gicd_ipriority);
544
/* GICD_IROUTERn -> s->gicd_irouter[irq] */
545
for (i = GIC_INTERNAL; i < s->num_irq; i++) {
548
offset = GICD_IROUTER + (sizeof(uint32_t) * i);
549
kvm_gicd_access(s, offset, ®l, false);
550
offset = GICD_IROUTER + (sizeof(uint32_t) * i) + 4;
551
kvm_gicd_access(s, offset, ®h, false);
552
s->gicd_irouter[i] = ((uint64_t)regh << 32) | regl;
555
/*****************************************************************
556
* CPU Interface(s) State
559
for (ncpu = 0; ncpu < s->num_cpu; ncpu++) {
560
GICv3CPUState *c = &s->cpu[ncpu];
563
kvm_gicc_access(s, ICC_SRE_EL1, ncpu, &c->icc_sre_el1, false);
564
kvm_gicc_access(s, ICC_CTLR_EL1, ncpu,
565
&c->icc_ctlr_el1[GICV3_NS], false);
566
kvm_gicc_access(s, ICC_IGRPEN0_EL1, ncpu,
567
&c->icc_igrpen[GICV3_G0], false);
568
kvm_gicc_access(s, ICC_IGRPEN1_EL1, ncpu,
569
&c->icc_igrpen[GICV3_G1NS], false);
570
kvm_gicc_access(s, ICC_PMR_EL1, ncpu, &c->icc_pmr_el1, false);
571
kvm_gicc_access(s, ICC_BPR0_EL1, ncpu, &c->icc_bpr[GICV3_G0], false);
572
kvm_gicc_access(s, ICC_BPR1_EL1, ncpu, &c->icc_bpr[GICV3_G1NS], false);
573
num_pri_bits = ((c->icc_ctlr_el1[GICV3_NS] &
574
ICC_CTLR_EL1_PRIBITS_MASK) >>
575
ICC_CTLR_EL1_PRIBITS_SHIFT) + 1;
577
switch (num_pri_bits) {
579
kvm_gicc_access(s, ICC_AP0R_EL1(3), ncpu, ®64, false);
580
c->icc_apr[GICV3_G0][3] = reg64;
581
kvm_gicc_access(s, ICC_AP0R_EL1(2), ncpu, ®64, false);
582
c->icc_apr[GICV3_G0][2] = reg64;
584
kvm_gicc_access(s, ICC_AP0R_EL1(1), ncpu, ®64, false);
585
c->icc_apr[GICV3_G0][1] = reg64;
587
kvm_gicc_access(s, ICC_AP0R_EL1(0), ncpu, ®64, false);
588
c->icc_apr[GICV3_G0][0] = reg64;
591
switch (num_pri_bits) {
593
kvm_gicc_access(s, ICC_AP1R_EL1(3), ncpu, ®64, false);
594
c->icc_apr[GICV3_G1NS][3] = reg64;
595
kvm_gicc_access(s, ICC_AP1R_EL1(2), ncpu, ®64, false);
596
c->icc_apr[GICV3_G1NS][2] = reg64;
598
kvm_gicc_access(s, ICC_AP1R_EL1(1), ncpu, ®64, false);
599
c->icc_apr[GICV3_G1NS][1] = reg64;
601
kvm_gicc_access(s, ICC_AP1R_EL1(0), ncpu, ®64, false);
602
c->icc_apr[GICV3_G1NS][0] = reg64;
607
static void arm_gicv3_icc_reset(CPUARMState *env, const ARMCPRegInfo *ri)
613
c = (GICv3CPUState *)env->gicv3state;
615
cpu = ARM_CPU(c->cpu);
618
c->icc_bpr[GICV3_G0] = GIC_MIN_BPR;
619
c->icc_bpr[GICV3_G1] = GIC_MIN_BPR;
620
c->icc_bpr[GICV3_G1NS] = GIC_MIN_BPR;
622
c->icc_sre_el1 = 0x7;
623
memset(c->icc_apr, 0, sizeof(c->icc_apr));
624
memset(c->icc_igrpen, 0, sizeof(c->icc_igrpen));
626
if (s->migration_blocker) {
630
/* Initialize to actual HW supported configuration */
631
kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS,
632
KVM_VGIC_ATTR(ICC_CTLR_EL1, cpu->mp_affinity),
633
&c->icc_ctlr_el1[GICV3_NS], false);
635
c->icc_ctlr_el1[GICV3_S] = c->icc_ctlr_el1[GICV3_NS];
72
638
static void kvm_arm_gicv3_reset(DeviceState *dev)