Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
[qemu.git] / hw / acpi / piix4.c
1 /*
2 * ACPI implementation
3 *
4 * Copyright (c) 2006 Fabrice Bellard
5 *
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 version 2.1 as published by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, see <http://www.gnu.org/licenses/>
17 *
18 * Contributions after 2012-01-13 are licensed under the terms of the
19 * GNU GPL, version 2 or (at your option) any later version.
20 */
21
22 #include "qemu/osdep.h"
23 #include "hw/i386/pc.h"
24 #include "hw/southbridge/piix.h"
25 #include "hw/irq.h"
26 #include "hw/isa/apm.h"
27 #include "hw/i2c/pm_smbus.h"
28 #include "hw/pci/pci.h"
29 #include "hw/qdev-properties.h"
30 #include "hw/acpi/acpi.h"
31 #include "sysemu/runstate.h"
32 #include "sysemu/sysemu.h"
33 #include "sysemu/xen.h"
34 #include "qapi/error.h"
35 #include "qemu/range.h"
36 #include "hw/acpi/pcihp.h"
37 #include "hw/acpi/cpu_hotplug.h"
38 #include "hw/acpi/cpu.h"
39 #include "hw/hotplug.h"
40 #include "hw/mem/pc-dimm.h"
41 #include "hw/mem/nvdimm.h"
42 #include "hw/acpi/memory_hotplug.h"
43 #include "hw/acpi/acpi_dev_interface.h"
44 #include "migration/vmstate.h"
45 #include "hw/core/cpu.h"
46 #include "trace.h"
47 #include "qom/object.h"
48
49 #define GPE_BASE 0xafe0
50 #define GPE_LEN 4
51
52 #define ACPI_PCIHP_ADDR_PIIX4 0xae00
53
54 struct pci_status {
55 uint32_t up; /* deprecated, maintained for migration compatibility */
56 uint32_t down;
57 };
58
59 struct PIIX4PMState {
60 /*< private >*/
61 PCIDevice parent_obj;
62 /*< public >*/
63
64 MemoryRegion io;
65 uint32_t io_base;
66
67 MemoryRegion io_gpe;
68 ACPIREGS ar;
69
70 APMState apm;
71
72 PMSMBus smb;
73 uint32_t smb_io_base;
74
75 qemu_irq irq;
76 qemu_irq smi_irq;
77 int smm_enabled;
78 bool smm_compat;
79 Notifier machine_ready;
80 Notifier powerdown_notifier;
81
82 AcpiPciHpState acpi_pci_hotplug;
83 bool use_acpi_hotplug_bridge;
84 bool use_acpi_root_pci_hotplug;
85
86 uint8_t disable_s3;
87 uint8_t disable_s4;
88 uint8_t s4_val;
89
90 bool cpu_hotplug_legacy;
91 AcpiCpuHotplug gpe_cpu;
92 CPUHotplugState cpuhp_state;
93
94 MemHotplugState acpi_memory_hotplug;
95 };
96
97 OBJECT_DECLARE_SIMPLE_TYPE(PIIX4PMState, PIIX4_PM)
98
99 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
100 PCIBus *bus, PIIX4PMState *s);
101
102 #define ACPI_ENABLE 0xf1
103 #define ACPI_DISABLE 0xf0
104
105 static void pm_tmr_timer(ACPIREGS *ar)
106 {
107 PIIX4PMState *s = container_of(ar, PIIX4PMState, ar);
108 acpi_update_sci(&s->ar, s->irq);
109 }
110
111 static void apm_ctrl_changed(uint32_t val, void *arg)
112 {
113 PIIX4PMState *s = arg;
114 PCIDevice *d = PCI_DEVICE(s);
115
116 /* ACPI specs 3.0, 4.7.2.5 */
117 acpi_pm1_cnt_update(&s->ar, val == ACPI_ENABLE, val == ACPI_DISABLE);
118 if (val == ACPI_ENABLE || val == ACPI_DISABLE) {
119 return;
120 }
121
122 if (d->config[0x5b] & (1 << 1)) {
123 if (s->smi_irq) {
124 qemu_irq_raise(s->smi_irq);
125 }
126 }
127 }
128
129 static void pm_io_space_update(PIIX4PMState *s)
130 {
131 PCIDevice *d = PCI_DEVICE(s);
132
133 s->io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x40));
134 s->io_base &= 0xffc0;
135
136 memory_region_transaction_begin();
137 memory_region_set_enabled(&s->io, d->config[0x80] & 1);
138 memory_region_set_address(&s->io, s->io_base);
139 memory_region_transaction_commit();
140 }
141
142 static void smbus_io_space_update(PIIX4PMState *s)
143 {
144 PCIDevice *d = PCI_DEVICE(s);
145
146 s->smb_io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x90));
147 s->smb_io_base &= 0xffc0;
148
149 memory_region_transaction_begin();
150 memory_region_set_enabled(&s->smb.io, d->config[0xd2] & 1);
151 memory_region_set_address(&s->smb.io, s->smb_io_base);
152 memory_region_transaction_commit();
153 }
154
155 static void pm_write_config(PCIDevice *d,
156 uint32_t address, uint32_t val, int len)
157 {
158 pci_default_write_config(d, address, val, len);
159 if (range_covers_byte(address, len, 0x80) ||
160 ranges_overlap(address, len, 0x40, 4)) {
161 pm_io_space_update((PIIX4PMState *)d);
162 }
163 if (range_covers_byte(address, len, 0xd2) ||
164 ranges_overlap(address, len, 0x90, 4)) {
165 smbus_io_space_update((PIIX4PMState *)d);
166 }
167 }
168
169 static int vmstate_acpi_post_load(void *opaque, int version_id)
170 {
171 PIIX4PMState *s = opaque;
172
173 pm_io_space_update(s);
174 smbus_io_space_update(s);
175 return 0;
176 }
177
178 #define VMSTATE_GPE_ARRAY(_field, _state) \
179 { \
180 .name = (stringify(_field)), \
181 .version_id = 0, \
182 .info = &vmstate_info_uint16, \
183 .size = sizeof(uint16_t), \
184 .flags = VMS_SINGLE | VMS_POINTER, \
185 .offset = vmstate_offset_pointer(_state, _field, uint8_t), \
186 }
187
188 static const VMStateDescription vmstate_gpe = {
189 .name = "gpe",
190 .version_id = 1,
191 .minimum_version_id = 1,
192 .fields = (VMStateField[]) {
193 VMSTATE_GPE_ARRAY(sts, ACPIGPE),
194 VMSTATE_GPE_ARRAY(en, ACPIGPE),
195 VMSTATE_END_OF_LIST()
196 }
197 };
198
199 static const VMStateDescription vmstate_pci_status = {
200 .name = "pci_status",
201 .version_id = 1,
202 .minimum_version_id = 1,
203 .fields = (VMStateField[]) {
204 VMSTATE_UINT32(up, struct AcpiPciHpPciStatus),
205 VMSTATE_UINT32(down, struct AcpiPciHpPciStatus),
206 VMSTATE_END_OF_LIST()
207 }
208 };
209
210 static bool vmstate_test_use_acpi_hotplug_bridge(void *opaque, int version_id)
211 {
212 PIIX4PMState *s = opaque;
213 return s->use_acpi_hotplug_bridge;
214 }
215
216 static bool vmstate_test_no_use_acpi_hotplug_bridge(void *opaque,
217 int version_id)
218 {
219 PIIX4PMState *s = opaque;
220 return !s->use_acpi_hotplug_bridge;
221 }
222
223 static bool vmstate_test_use_memhp(void *opaque)
224 {
225 PIIX4PMState *s = opaque;
226 return s->acpi_memory_hotplug.is_enabled;
227 }
228
229 static const VMStateDescription vmstate_memhp_state = {
230 .name = "piix4_pm/memhp",
231 .version_id = 1,
232 .minimum_version_id = 1,
233 .minimum_version_id_old = 1,
234 .needed = vmstate_test_use_memhp,
235 .fields = (VMStateField[]) {
236 VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState),
237 VMSTATE_END_OF_LIST()
238 }
239 };
240
241 static bool vmstate_test_use_cpuhp(void *opaque)
242 {
243 PIIX4PMState *s = opaque;
244 return !s->cpu_hotplug_legacy;
245 }
246
247 static int vmstate_cpuhp_pre_load(void *opaque)
248 {
249 Object *obj = OBJECT(opaque);
250 object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort);
251 return 0;
252 }
253
254 static const VMStateDescription vmstate_cpuhp_state = {
255 .name = "piix4_pm/cpuhp",
256 .version_id = 1,
257 .minimum_version_id = 1,
258 .minimum_version_id_old = 1,
259 .needed = vmstate_test_use_cpuhp,
260 .pre_load = vmstate_cpuhp_pre_load,
261 .fields = (VMStateField[]) {
262 VMSTATE_CPU_HOTPLUG(cpuhp_state, PIIX4PMState),
263 VMSTATE_END_OF_LIST()
264 }
265 };
266
267 static bool piix4_vmstate_need_smbus(void *opaque, int version_id)
268 {
269 return pm_smbus_vmstate_needed();
270 }
271
272 /* qemu-kvm 1.2 uses version 3 but advertised as 2
273 * To support incoming qemu-kvm 1.2 migration, change version_id
274 * and minimum_version_id to 2 below (which breaks migration from
275 * qemu 1.2).
276 *
277 */
278 static const VMStateDescription vmstate_acpi = {
279 .name = "piix4_pm",
280 .version_id = 3,
281 .minimum_version_id = 3,
282 .post_load = vmstate_acpi_post_load,
283 .fields = (VMStateField[]) {
284 VMSTATE_PCI_DEVICE(parent_obj, PIIX4PMState),
285 VMSTATE_UINT16(ar.pm1.evt.sts, PIIX4PMState),
286 VMSTATE_UINT16(ar.pm1.evt.en, PIIX4PMState),
287 VMSTATE_UINT16(ar.pm1.cnt.cnt, PIIX4PMState),
288 VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState),
289 VMSTATE_STRUCT_TEST(smb, PIIX4PMState, piix4_vmstate_need_smbus, 3,
290 pmsmb_vmstate, PMSMBus),
291 VMSTATE_TIMER_PTR(ar.tmr.timer, PIIX4PMState),
292 VMSTATE_INT64(ar.tmr.overflow_time, PIIX4PMState),
293 VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE),
294 VMSTATE_STRUCT_TEST(
295 acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT],
296 PIIX4PMState,
297 vmstate_test_no_use_acpi_hotplug_bridge,
298 2, vmstate_pci_status,
299 struct AcpiPciHpPciStatus),
300 VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState,
301 vmstate_test_use_acpi_hotplug_bridge,
302 vmstate_acpi_pcihp_use_acpi_index),
303 VMSTATE_END_OF_LIST()
304 },
305 .subsections = (const VMStateDescription*[]) {
306 &vmstate_memhp_state,
307 &vmstate_cpuhp_state,
308 NULL
309 }
310 };
311
312 static void piix4_pm_reset(DeviceState *dev)
313 {
314 PIIX4PMState *s = PIIX4_PM(dev);
315 PCIDevice *d = PCI_DEVICE(s);
316 uint8_t *pci_conf = d->config;
317
318 pci_conf[0x58] = 0;
319 pci_conf[0x59] = 0;
320 pci_conf[0x5a] = 0;
321 pci_conf[0x5b] = 0;
322
323 pci_conf[0x40] = 0x01; /* PM io base read only bit */
324 pci_conf[0x80] = 0;
325
326 if (!s->smm_enabled) {
327 /* Mark SMM as already inited (until KVM supports SMM). */
328 pci_conf[0x5B] = 0x02;
329 }
330
331 acpi_pm1_evt_reset(&s->ar);
332 acpi_pm1_cnt_reset(&s->ar);
333 acpi_pm_tmr_reset(&s->ar);
334 acpi_gpe_reset(&s->ar);
335 acpi_update_sci(&s->ar, s->irq);
336
337 pm_io_space_update(s);
338 acpi_pcihp_reset(&s->acpi_pci_hotplug, !s->use_acpi_root_pci_hotplug);
339 }
340
341 static void piix4_pm_powerdown_req(Notifier *n, void *opaque)
342 {
343 PIIX4PMState *s = container_of(n, PIIX4PMState, powerdown_notifier);
344
345 assert(s != NULL);
346 acpi_pm1_evt_power_down(&s->ar);
347 }
348
349 static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev,
350 DeviceState *dev, Error **errp)
351 {
352 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
353
354 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
355 acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
356 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
357 if (!s->acpi_memory_hotplug.is_enabled) {
358 error_setg(errp,
359 "memory hotplug is not enabled: %s.memory-hotplug-support "
360 "is not set", object_get_typename(OBJECT(s)));
361 }
362 } else if (
363 !object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
364 error_setg(errp, "acpi: device pre plug request for not supported"
365 " device type: %s", object_get_typename(OBJECT(dev)));
366 }
367 }
368
369 static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
370 DeviceState *dev, Error **errp)
371 {
372 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
373
374 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
375 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
376 nvdimm_acpi_plug_cb(hotplug_dev, dev);
377 } else {
378 acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug,
379 dev, errp);
380 }
381 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
382 acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
383 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
384 if (s->cpu_hotplug_legacy) {
385 legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
386 } else {
387 acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
388 }
389 } else {
390 g_assert_not_reached();
391 }
392 }
393
394 static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
395 DeviceState *dev, Error **errp)
396 {
397 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
398
399 if (s->acpi_memory_hotplug.is_enabled &&
400 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
401 acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug,
402 dev, errp);
403 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
404 acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug,
405 dev, errp);
406 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
407 !s->cpu_hotplug_legacy) {
408 acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
409 } else {
410 error_setg(errp, "acpi: device unplug request for not supported device"
411 " type: %s", object_get_typename(OBJECT(dev)));
412 }
413 }
414
415 static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
416 DeviceState *dev, Error **errp)
417 {
418 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
419
420 if (s->acpi_memory_hotplug.is_enabled &&
421 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
422 acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp);
423 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
424 acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
425 errp);
426 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
427 !s->cpu_hotplug_legacy) {
428 acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
429 } else {
430 error_setg(errp, "acpi: device unplug for not supported device"
431 " type: %s", object_get_typename(OBJECT(dev)));
432 }
433 }
434
435 static void piix4_pm_machine_ready(Notifier *n, void *opaque)
436 {
437 PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready);
438 PCIDevice *d = PCI_DEVICE(s);
439 MemoryRegion *io_as = pci_address_space_io(d);
440 uint8_t *pci_conf;
441
442 pci_conf = d->config;
443 pci_conf[0x5f] = 0x10 |
444 (memory_region_present(io_as, 0x378) ? 0x80 : 0);
445 pci_conf[0x63] = 0x60;
446 pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) |
447 (memory_region_present(io_as, 0x2f8) ? 0x90 : 0);
448 }
449
450 static void piix4_pm_add_properties(PIIX4PMState *s)
451 {
452 static const uint8_t acpi_enable_cmd = ACPI_ENABLE;
453 static const uint8_t acpi_disable_cmd = ACPI_DISABLE;
454 static const uint32_t gpe0_blk = GPE_BASE;
455 static const uint32_t gpe0_blk_len = GPE_LEN;
456 static const uint16_t sci_int = 9;
457
458 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
459 &acpi_enable_cmd, OBJ_PROP_FLAG_READ);
460 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
461 &acpi_disable_cmd, OBJ_PROP_FLAG_READ);
462 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
463 &gpe0_blk, OBJ_PROP_FLAG_READ);
464 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
465 &gpe0_blk_len, OBJ_PROP_FLAG_READ);
466 object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
467 &sci_int, OBJ_PROP_FLAG_READ);
468 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
469 &s->io_base, OBJ_PROP_FLAG_READ);
470 }
471
472 static void piix4_pm_realize(PCIDevice *dev, Error **errp)
473 {
474 PIIX4PMState *s = PIIX4_PM(dev);
475 uint8_t *pci_conf;
476
477 pci_conf = dev->config;
478 pci_conf[0x06] = 0x80;
479 pci_conf[0x07] = 0x02;
480 pci_conf[0x09] = 0x00;
481 pci_conf[0x3d] = 0x01; // interrupt pin 1
482
483 /* APM */
484 apm_init(dev, &s->apm, apm_ctrl_changed, s);
485
486 if (!s->smm_enabled) {
487 /* Mark SMM as already inited to prevent SMM from running. KVM does not
488 * support SMM mode. */
489 pci_conf[0x5B] = 0x02;
490 }
491
492 /* XXX: which specification is used ? The i82731AB has different
493 mappings */
494 pci_conf[0x90] = s->smb_io_base | 1;
495 pci_conf[0x91] = s->smb_io_base >> 8;
496 pci_conf[0xd2] = 0x09;
497 pm_smbus_init(DEVICE(dev), &s->smb, true);
498 memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1);
499 memory_region_add_subregion(pci_address_space_io(dev),
500 s->smb_io_base, &s->smb.io);
501
502 memory_region_init(&s->io, OBJECT(s), "piix4-pm", 64);
503 memory_region_set_enabled(&s->io, false);
504 memory_region_add_subregion(pci_address_space_io(dev),
505 0, &s->io);
506
507 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
508 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
509 acpi_pm1_cnt_init(&s->ar, &s->io, s->disable_s3, s->disable_s4, s->s4_val,
510 !s->smm_compat && !s->smm_enabled);
511 acpi_gpe_init(&s->ar, GPE_LEN);
512
513 s->powerdown_notifier.notify = piix4_pm_powerdown_req;
514 qemu_register_powerdown_notifier(&s->powerdown_notifier);
515
516 s->machine_ready.notify = piix4_pm_machine_ready;
517 qemu_add_machine_init_done_notifier(&s->machine_ready);
518
519 piix4_acpi_system_hot_add_init(pci_address_space_io(dev),
520 pci_get_bus(dev), s);
521 qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s));
522
523 piix4_pm_add_properties(s);
524 }
525
526 I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
527 qemu_irq sci_irq, qemu_irq smi_irq,
528 int smm_enabled, DeviceState **piix4_pm)
529 {
530 PCIDevice *pci_dev;
531 DeviceState *dev;
532 PIIX4PMState *s;
533
534 pci_dev = pci_new(devfn, TYPE_PIIX4_PM);
535 dev = DEVICE(pci_dev);
536 qdev_prop_set_uint32(dev, "smb_io_base", smb_io_base);
537 if (piix4_pm) {
538 *piix4_pm = dev;
539 }
540
541 s = PIIX4_PM(dev);
542 s->irq = sci_irq;
543 s->smi_irq = smi_irq;
544 s->smm_enabled = smm_enabled;
545 if (xen_enabled()) {
546 s->use_acpi_hotplug_bridge = false;
547 }
548
549 pci_realize_and_unref(pci_dev, bus, &error_fatal);
550
551 return s->smb.smbus;
552 }
553
554 static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width)
555 {
556 PIIX4PMState *s = opaque;
557 uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr);
558
559 trace_piix4_gpe_readb(addr, width, val);
560 return val;
561 }
562
563 static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
564 unsigned width)
565 {
566 PIIX4PMState *s = opaque;
567
568 trace_piix4_gpe_writeb(addr, width, val);
569 acpi_gpe_ioport_writeb(&s->ar, addr, val);
570 acpi_update_sci(&s->ar, s->irq);
571 }
572
573 static const MemoryRegionOps piix4_gpe_ops = {
574 .read = gpe_readb,
575 .write = gpe_writeb,
576 .valid.min_access_size = 1,
577 .valid.max_access_size = 4,
578 .impl.min_access_size = 1,
579 .impl.max_access_size = 1,
580 .endianness = DEVICE_LITTLE_ENDIAN,
581 };
582
583
584 static bool piix4_get_cpu_hotplug_legacy(Object *obj, Error **errp)
585 {
586 PIIX4PMState *s = PIIX4_PM(obj);
587
588 return s->cpu_hotplug_legacy;
589 }
590
591 static void piix4_set_cpu_hotplug_legacy(Object *obj, bool value, Error **errp)
592 {
593 PIIX4PMState *s = PIIX4_PM(obj);
594
595 assert(!value);
596 if (s->cpu_hotplug_legacy && value == false) {
597 acpi_switch_to_modern_cphp(&s->gpe_cpu, &s->cpuhp_state,
598 PIIX4_CPU_HOTPLUG_IO_BASE);
599 }
600 s->cpu_hotplug_legacy = value;
601 }
602
603 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
604 PCIBus *bus, PIIX4PMState *s)
605 {
606 memory_region_init_io(&s->io_gpe, OBJECT(s), &piix4_gpe_ops, s,
607 "acpi-gpe0", GPE_LEN);
608 memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe);
609
610 if (s->use_acpi_hotplug_bridge || s->use_acpi_root_pci_hotplug) {
611 acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent,
612 s->use_acpi_hotplug_bridge, ACPI_PCIHP_ADDR_PIIX4);
613 }
614
615 s->cpu_hotplug_legacy = true;
616 object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy",
617 piix4_get_cpu_hotplug_legacy,
618 piix4_set_cpu_hotplug_legacy);
619 legacy_acpi_cpu_hotplug_init(parent, OBJECT(s), &s->gpe_cpu,
620 PIIX4_CPU_HOTPLUG_IO_BASE);
621
622 if (s->acpi_memory_hotplug.is_enabled) {
623 acpi_memory_hotplug_init(parent, OBJECT(s), &s->acpi_memory_hotplug,
624 ACPI_MEMORY_HOTPLUG_BASE);
625 }
626 }
627
628 static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
629 {
630 PIIX4PMState *s = PIIX4_PM(adev);
631
632 acpi_memory_ospm_status(&s->acpi_memory_hotplug, list);
633 if (!s->cpu_hotplug_legacy) {
634 acpi_cpu_ospm_status(&s->cpuhp_state, list);
635 }
636 }
637
638 static void piix4_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev)
639 {
640 PIIX4PMState *s = PIIX4_PM(adev);
641
642 acpi_send_gpe_event(&s->ar, s->irq, ev);
643 }
644
645 static Property piix4_pm_properties[] = {
646 DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0),
647 DEFINE_PROP_UINT8(ACPI_PM_PROP_S3_DISABLED, PIIX4PMState, disable_s3, 0),
648 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_DISABLED, PIIX4PMState, disable_s4, 0),
649 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_VAL, PIIX4PMState, s4_val, 2),
650 DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, PIIX4PMState,
651 use_acpi_hotplug_bridge, true),
652 DEFINE_PROP_BOOL(ACPI_PM_PROP_ACPI_PCI_ROOTHP, PIIX4PMState,
653 use_acpi_root_pci_hotplug, true),
654 DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState,
655 acpi_memory_hotplug.is_enabled, true),
656 DEFINE_PROP_BOOL("smm-compat", PIIX4PMState, smm_compat, false),
657 DEFINE_PROP_END_OF_LIST(),
658 };
659
660 static void piix4_pm_class_init(ObjectClass *klass, void *data)
661 {
662 DeviceClass *dc = DEVICE_CLASS(klass);
663 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
664 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
665 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass);
666
667 k->realize = piix4_pm_realize;
668 k->config_write = pm_write_config;
669 k->vendor_id = PCI_VENDOR_ID_INTEL;
670 k->device_id = PCI_DEVICE_ID_INTEL_82371AB_3;
671 k->revision = 0x03;
672 k->class_id = PCI_CLASS_BRIDGE_OTHER;
673 dc->reset = piix4_pm_reset;
674 dc->desc = "PM";
675 dc->vmsd = &vmstate_acpi;
676 device_class_set_props(dc, piix4_pm_properties);
677 /*
678 * Reason: part of PIIX4 southbridge, needs to be wired up,
679 * e.g. by mips_malta_init()
680 */
681 dc->user_creatable = false;
682 dc->hotpluggable = false;
683 hc->pre_plug = piix4_device_pre_plug_cb;
684 hc->plug = piix4_device_plug_cb;
685 hc->unplug_request = piix4_device_unplug_request_cb;
686 hc->unplug = piix4_device_unplug_cb;
687 adevc->ospm_status = piix4_ospm_status;
688 adevc->send_event = piix4_send_gpe;
689 adevc->madt_cpu = pc_madt_cpu_entry;
690 }
691
692 static const TypeInfo piix4_pm_info = {
693 .name = TYPE_PIIX4_PM,
694 .parent = TYPE_PCI_DEVICE,
695 .instance_size = sizeof(PIIX4PMState),
696 .class_init = piix4_pm_class_init,
697 .interfaces = (InterfaceInfo[]) {
698 { TYPE_HOTPLUG_HANDLER },
699 { TYPE_ACPI_DEVICE_IF },
700 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
701 { }
702 }
703 };
704
705 static void piix4_pm_register_types(void)
706 {
707 type_register_static(&piix4_pm_info);
708 }
709
710 type_init(piix4_pm_register_types)