meson: convert qapi-specific to meson
[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 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 "exec/address-spaces.h"
37 #include "hw/acpi/pcihp.h"
38 #include "hw/acpi/cpu_hotplug.h"
39 #include "hw/acpi/cpu.h"
40 #include "hw/hotplug.h"
41 #include "hw/mem/pc-dimm.h"
42 #include "hw/mem/nvdimm.h"
43 #include "hw/acpi/memory_hotplug.h"
44 #include "hw/acpi/acpi_dev_interface.h"
45 #include "migration/vmstate.h"
46 #include "hw/core/cpu.h"
47 #include "trace.h"
48
49 #define GPE_BASE 0xafe0
50 #define GPE_LEN 4
51
52 struct pci_status {
53 uint32_t up; /* deprecated, maintained for migration compatibility */
54 uint32_t down;
55 };
56
57 typedef struct PIIX4PMState {
58 /*< private >*/
59 PCIDevice parent_obj;
60 /*< public >*/
61
62 MemoryRegion io;
63 uint32_t io_base;
64
65 MemoryRegion io_gpe;
66 ACPIREGS ar;
67
68 APMState apm;
69
70 PMSMBus smb;
71 uint32_t smb_io_base;
72
73 qemu_irq irq;
74 qemu_irq smi_irq;
75 int smm_enabled;
76 Notifier machine_ready;
77 Notifier powerdown_notifier;
78
79 AcpiPciHpState acpi_pci_hotplug;
80 bool use_acpi_hotplug_bridge;
81
82 uint8_t disable_s3;
83 uint8_t disable_s4;
84 uint8_t s4_val;
85
86 bool cpu_hotplug_legacy;
87 AcpiCpuHotplug gpe_cpu;
88 CPUHotplugState cpuhp_state;
89
90 MemHotplugState acpi_memory_hotplug;
91 } PIIX4PMState;
92
93 #define PIIX4_PM(obj) \
94 OBJECT_CHECK(PIIX4PMState, (obj), TYPE_PIIX4_PM)
95
96 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
97 PCIBus *bus, PIIX4PMState *s);
98
99 #define ACPI_ENABLE 0xf1
100 #define ACPI_DISABLE 0xf0
101
102 static void pm_tmr_timer(ACPIREGS *ar)
103 {
104 PIIX4PMState *s = container_of(ar, PIIX4PMState, ar);
105 acpi_update_sci(&s->ar, s->irq);
106 }
107
108 static void apm_ctrl_changed(uint32_t val, void *arg)
109 {
110 PIIX4PMState *s = arg;
111 PCIDevice *d = PCI_DEVICE(s);
112
113 /* ACPI specs 3.0, 4.7.2.5 */
114 acpi_pm1_cnt_update(&s->ar, val == ACPI_ENABLE, val == ACPI_DISABLE);
115 if (val == ACPI_ENABLE || val == ACPI_DISABLE) {
116 return;
117 }
118
119 if (d->config[0x5b] & (1 << 1)) {
120 if (s->smi_irq) {
121 qemu_irq_raise(s->smi_irq);
122 }
123 }
124 }
125
126 static void pm_io_space_update(PIIX4PMState *s)
127 {
128 PCIDevice *d = PCI_DEVICE(s);
129
130 s->io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x40));
131 s->io_base &= 0xffc0;
132
133 memory_region_transaction_begin();
134 memory_region_set_enabled(&s->io, d->config[0x80] & 1);
135 memory_region_set_address(&s->io, s->io_base);
136 memory_region_transaction_commit();
137 }
138
139 static void smbus_io_space_update(PIIX4PMState *s)
140 {
141 PCIDevice *d = PCI_DEVICE(s);
142
143 s->smb_io_base = le32_to_cpu(*(uint32_t *)(d->config + 0x90));
144 s->smb_io_base &= 0xffc0;
145
146 memory_region_transaction_begin();
147 memory_region_set_enabled(&s->smb.io, d->config[0xd2] & 1);
148 memory_region_set_address(&s->smb.io, s->smb_io_base);
149 memory_region_transaction_commit();
150 }
151
152 static void pm_write_config(PCIDevice *d,
153 uint32_t address, uint32_t val, int len)
154 {
155 pci_default_write_config(d, address, val, len);
156 if (range_covers_byte(address, len, 0x80) ||
157 ranges_overlap(address, len, 0x40, 4)) {
158 pm_io_space_update((PIIX4PMState *)d);
159 }
160 if (range_covers_byte(address, len, 0xd2) ||
161 ranges_overlap(address, len, 0x90, 4)) {
162 smbus_io_space_update((PIIX4PMState *)d);
163 }
164 }
165
166 static int vmstate_acpi_post_load(void *opaque, int version_id)
167 {
168 PIIX4PMState *s = opaque;
169
170 pm_io_space_update(s);
171 smbus_io_space_update(s);
172 return 0;
173 }
174
175 #define VMSTATE_GPE_ARRAY(_field, _state) \
176 { \
177 .name = (stringify(_field)), \
178 .version_id = 0, \
179 .info = &vmstate_info_uint16, \
180 .size = sizeof(uint16_t), \
181 .flags = VMS_SINGLE | VMS_POINTER, \
182 .offset = vmstate_offset_pointer(_state, _field, uint8_t), \
183 }
184
185 static const VMStateDescription vmstate_gpe = {
186 .name = "gpe",
187 .version_id = 1,
188 .minimum_version_id = 1,
189 .fields = (VMStateField[]) {
190 VMSTATE_GPE_ARRAY(sts, ACPIGPE),
191 VMSTATE_GPE_ARRAY(en, ACPIGPE),
192 VMSTATE_END_OF_LIST()
193 }
194 };
195
196 static const VMStateDescription vmstate_pci_status = {
197 .name = "pci_status",
198 .version_id = 1,
199 .minimum_version_id = 1,
200 .fields = (VMStateField[]) {
201 VMSTATE_UINT32(up, struct AcpiPciHpPciStatus),
202 VMSTATE_UINT32(down, struct AcpiPciHpPciStatus),
203 VMSTATE_END_OF_LIST()
204 }
205 };
206
207 static bool vmstate_test_use_acpi_hotplug_bridge(void *opaque, int version_id)
208 {
209 PIIX4PMState *s = opaque;
210 return s->use_acpi_hotplug_bridge;
211 }
212
213 static bool vmstate_test_no_use_acpi_hotplug_bridge(void *opaque,
214 int version_id)
215 {
216 PIIX4PMState *s = opaque;
217 return !s->use_acpi_hotplug_bridge;
218 }
219
220 static bool vmstate_test_use_memhp(void *opaque)
221 {
222 PIIX4PMState *s = opaque;
223 return s->acpi_memory_hotplug.is_enabled;
224 }
225
226 static const VMStateDescription vmstate_memhp_state = {
227 .name = "piix4_pm/memhp",
228 .version_id = 1,
229 .minimum_version_id = 1,
230 .minimum_version_id_old = 1,
231 .needed = vmstate_test_use_memhp,
232 .fields = (VMStateField[]) {
233 VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState),
234 VMSTATE_END_OF_LIST()
235 }
236 };
237
238 static bool vmstate_test_use_cpuhp(void *opaque)
239 {
240 PIIX4PMState *s = opaque;
241 return !s->cpu_hotplug_legacy;
242 }
243
244 static int vmstate_cpuhp_pre_load(void *opaque)
245 {
246 Object *obj = OBJECT(opaque);
247 object_property_set_bool(obj, "cpu-hotplug-legacy", false, &error_abort);
248 return 0;
249 }
250
251 static const VMStateDescription vmstate_cpuhp_state = {
252 .name = "piix4_pm/cpuhp",
253 .version_id = 1,
254 .minimum_version_id = 1,
255 .minimum_version_id_old = 1,
256 .needed = vmstate_test_use_cpuhp,
257 .pre_load = vmstate_cpuhp_pre_load,
258 .fields = (VMStateField[]) {
259 VMSTATE_CPU_HOTPLUG(cpuhp_state, PIIX4PMState),
260 VMSTATE_END_OF_LIST()
261 }
262 };
263
264 static bool piix4_vmstate_need_smbus(void *opaque, int version_id)
265 {
266 return pm_smbus_vmstate_needed();
267 }
268
269 /* qemu-kvm 1.2 uses version 3 but advertised as 2
270 * To support incoming qemu-kvm 1.2 migration, change version_id
271 * and minimum_version_id to 2 below (which breaks migration from
272 * qemu 1.2).
273 *
274 */
275 static const VMStateDescription vmstate_acpi = {
276 .name = "piix4_pm",
277 .version_id = 3,
278 .minimum_version_id = 3,
279 .post_load = vmstate_acpi_post_load,
280 .fields = (VMStateField[]) {
281 VMSTATE_PCI_DEVICE(parent_obj, PIIX4PMState),
282 VMSTATE_UINT16(ar.pm1.evt.sts, PIIX4PMState),
283 VMSTATE_UINT16(ar.pm1.evt.en, PIIX4PMState),
284 VMSTATE_UINT16(ar.pm1.cnt.cnt, PIIX4PMState),
285 VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState),
286 VMSTATE_STRUCT_TEST(smb, PIIX4PMState, piix4_vmstate_need_smbus, 3,
287 pmsmb_vmstate, PMSMBus),
288 VMSTATE_TIMER_PTR(ar.tmr.timer, PIIX4PMState),
289 VMSTATE_INT64(ar.tmr.overflow_time, PIIX4PMState),
290 VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE),
291 VMSTATE_STRUCT_TEST(
292 acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT],
293 PIIX4PMState,
294 vmstate_test_no_use_acpi_hotplug_bridge,
295 2, vmstate_pci_status,
296 struct AcpiPciHpPciStatus),
297 VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState,
298 vmstate_test_use_acpi_hotplug_bridge),
299 VMSTATE_END_OF_LIST()
300 },
301 .subsections = (const VMStateDescription*[]) {
302 &vmstate_memhp_state,
303 &vmstate_cpuhp_state,
304 NULL
305 }
306 };
307
308 static void piix4_pm_reset(DeviceState *dev)
309 {
310 PIIX4PMState *s = PIIX4_PM(dev);
311 PCIDevice *d = PCI_DEVICE(s);
312 uint8_t *pci_conf = d->config;
313
314 pci_conf[0x58] = 0;
315 pci_conf[0x59] = 0;
316 pci_conf[0x5a] = 0;
317 pci_conf[0x5b] = 0;
318
319 pci_conf[0x40] = 0x01; /* PM io base read only bit */
320 pci_conf[0x80] = 0;
321
322 if (!s->smm_enabled) {
323 /* Mark SMM as already inited (until KVM supports SMM). */
324 pci_conf[0x5B] = 0x02;
325 }
326 pm_io_space_update(s);
327 acpi_pcihp_reset(&s->acpi_pci_hotplug);
328 }
329
330 static void piix4_pm_powerdown_req(Notifier *n, void *opaque)
331 {
332 PIIX4PMState *s = container_of(n, PIIX4PMState, powerdown_notifier);
333
334 assert(s != NULL);
335 acpi_pm1_evt_power_down(&s->ar);
336 }
337
338 static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev,
339 DeviceState *dev, Error **errp)
340 {
341 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
342
343 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
344 acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
345 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
346 if (!s->acpi_memory_hotplug.is_enabled) {
347 error_setg(errp,
348 "memory hotplug is not enabled: %s.memory-hotplug-support "
349 "is not set", object_get_typename(OBJECT(s)));
350 }
351 } else if (
352 !object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
353 error_setg(errp, "acpi: device pre plug request for not supported"
354 " device type: %s", object_get_typename(OBJECT(dev)));
355 }
356 }
357
358 static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
359 DeviceState *dev, Error **errp)
360 {
361 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
362
363 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
364 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
365 nvdimm_acpi_plug_cb(hotplug_dev, dev);
366 } else {
367 acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug,
368 dev, errp);
369 }
370 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
371 acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
372 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
373 if (s->cpu_hotplug_legacy) {
374 legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
375 } else {
376 acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
377 }
378 } else {
379 g_assert_not_reached();
380 }
381 }
382
383 static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
384 DeviceState *dev, Error **errp)
385 {
386 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
387
388 if (s->acpi_memory_hotplug.is_enabled &&
389 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
390 acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug,
391 dev, errp);
392 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
393 acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug,
394 dev, errp);
395 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
396 !s->cpu_hotplug_legacy) {
397 acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
398 } else {
399 error_setg(errp, "acpi: device unplug request for not supported device"
400 " type: %s", object_get_typename(OBJECT(dev)));
401 }
402 }
403
404 static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
405 DeviceState *dev, Error **errp)
406 {
407 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
408
409 if (s->acpi_memory_hotplug.is_enabled &&
410 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
411 acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp);
412 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
413 acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
414 errp);
415 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
416 !s->cpu_hotplug_legacy) {
417 acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
418 } else {
419 error_setg(errp, "acpi: device unplug for not supported device"
420 " type: %s", object_get_typename(OBJECT(dev)));
421 }
422 }
423
424 static void piix4_pm_machine_ready(Notifier *n, void *opaque)
425 {
426 PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready);
427 PCIDevice *d = PCI_DEVICE(s);
428 MemoryRegion *io_as = pci_address_space_io(d);
429 uint8_t *pci_conf;
430
431 pci_conf = d->config;
432 pci_conf[0x5f] = 0x10 |
433 (memory_region_present(io_as, 0x378) ? 0x80 : 0);
434 pci_conf[0x63] = 0x60;
435 pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) |
436 (memory_region_present(io_as, 0x2f8) ? 0x90 : 0);
437 }
438
439 static void piix4_pm_add_propeties(PIIX4PMState *s)
440 {
441 static const uint8_t acpi_enable_cmd = ACPI_ENABLE;
442 static const uint8_t acpi_disable_cmd = ACPI_DISABLE;
443 static const uint32_t gpe0_blk = GPE_BASE;
444 static const uint32_t gpe0_blk_len = GPE_LEN;
445 static const uint16_t sci_int = 9;
446
447 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
448 &acpi_enable_cmd, OBJ_PROP_FLAG_READ);
449 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
450 &acpi_disable_cmd, OBJ_PROP_FLAG_READ);
451 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
452 &gpe0_blk, OBJ_PROP_FLAG_READ);
453 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
454 &gpe0_blk_len, OBJ_PROP_FLAG_READ);
455 object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
456 &sci_int, OBJ_PROP_FLAG_READ);
457 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
458 &s->io_base, OBJ_PROP_FLAG_READ);
459 }
460
461 static void piix4_pm_realize(PCIDevice *dev, Error **errp)
462 {
463 PIIX4PMState *s = PIIX4_PM(dev);
464 uint8_t *pci_conf;
465
466 pci_conf = dev->config;
467 pci_conf[0x06] = 0x80;
468 pci_conf[0x07] = 0x02;
469 pci_conf[0x09] = 0x00;
470 pci_conf[0x3d] = 0x01; // interrupt pin 1
471
472 /* APM */
473 apm_init(dev, &s->apm, apm_ctrl_changed, s);
474
475 if (!s->smm_enabled) {
476 /* Mark SMM as already inited to prevent SMM from running. KVM does not
477 * support SMM mode. */
478 pci_conf[0x5B] = 0x02;
479 }
480
481 /* XXX: which specification is used ? The i82731AB has different
482 mappings */
483 pci_conf[0x90] = s->smb_io_base | 1;
484 pci_conf[0x91] = s->smb_io_base >> 8;
485 pci_conf[0xd2] = 0x09;
486 pm_smbus_init(DEVICE(dev), &s->smb, true);
487 memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1);
488 memory_region_add_subregion(pci_address_space_io(dev),
489 s->smb_io_base, &s->smb.io);
490
491 memory_region_init(&s->io, OBJECT(s), "piix4-pm", 64);
492 memory_region_set_enabled(&s->io, false);
493 memory_region_add_subregion(pci_address_space_io(dev),
494 0, &s->io);
495
496 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
497 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
498 acpi_pm1_cnt_init(&s->ar, &s->io, s->disable_s3, s->disable_s4, s->s4_val);
499 acpi_gpe_init(&s->ar, GPE_LEN);
500
501 s->powerdown_notifier.notify = piix4_pm_powerdown_req;
502 qemu_register_powerdown_notifier(&s->powerdown_notifier);
503
504 s->machine_ready.notify = piix4_pm_machine_ready;
505 qemu_add_machine_init_done_notifier(&s->machine_ready);
506
507 piix4_acpi_system_hot_add_init(pci_address_space_io(dev),
508 pci_get_bus(dev), s);
509 qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s));
510
511 piix4_pm_add_propeties(s);
512 }
513
514 I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
515 qemu_irq sci_irq, qemu_irq smi_irq,
516 int smm_enabled, DeviceState **piix4_pm)
517 {
518 PCIDevice *pci_dev;
519 DeviceState *dev;
520 PIIX4PMState *s;
521
522 pci_dev = pci_new(devfn, TYPE_PIIX4_PM);
523 dev = DEVICE(pci_dev);
524 qdev_prop_set_uint32(dev, "smb_io_base", smb_io_base);
525 if (piix4_pm) {
526 *piix4_pm = dev;
527 }
528
529 s = PIIX4_PM(dev);
530 s->irq = sci_irq;
531 s->smi_irq = smi_irq;
532 s->smm_enabled = smm_enabled;
533 if (xen_enabled()) {
534 s->use_acpi_hotplug_bridge = false;
535 }
536
537 pci_realize_and_unref(pci_dev, bus, &error_fatal);
538
539 return s->smb.smbus;
540 }
541
542 static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width)
543 {
544 PIIX4PMState *s = opaque;
545 uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr);
546
547 trace_piix4_gpe_readb(addr, width, val);
548 return val;
549 }
550
551 static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
552 unsigned width)
553 {
554 PIIX4PMState *s = opaque;
555
556 trace_piix4_gpe_writeb(addr, width, val);
557 acpi_gpe_ioport_writeb(&s->ar, addr, val);
558 acpi_update_sci(&s->ar, s->irq);
559 }
560
561 static const MemoryRegionOps piix4_gpe_ops = {
562 .read = gpe_readb,
563 .write = gpe_writeb,
564 .valid.min_access_size = 1,
565 .valid.max_access_size = 4,
566 .impl.min_access_size = 1,
567 .impl.max_access_size = 1,
568 .endianness = DEVICE_LITTLE_ENDIAN,
569 };
570
571
572 static bool piix4_get_cpu_hotplug_legacy(Object *obj, Error **errp)
573 {
574 PIIX4PMState *s = PIIX4_PM(obj);
575
576 return s->cpu_hotplug_legacy;
577 }
578
579 static void piix4_set_cpu_hotplug_legacy(Object *obj, bool value, Error **errp)
580 {
581 PIIX4PMState *s = PIIX4_PM(obj);
582
583 assert(!value);
584 if (s->cpu_hotplug_legacy && value == false) {
585 acpi_switch_to_modern_cphp(&s->gpe_cpu, &s->cpuhp_state,
586 PIIX4_CPU_HOTPLUG_IO_BASE);
587 }
588 s->cpu_hotplug_legacy = value;
589 }
590
591 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
592 PCIBus *bus, PIIX4PMState *s)
593 {
594 memory_region_init_io(&s->io_gpe, OBJECT(s), &piix4_gpe_ops, s,
595 "acpi-gpe0", GPE_LEN);
596 memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe);
597
598 acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent,
599 s->use_acpi_hotplug_bridge);
600
601 s->cpu_hotplug_legacy = true;
602 object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy",
603 piix4_get_cpu_hotplug_legacy,
604 piix4_set_cpu_hotplug_legacy);
605 legacy_acpi_cpu_hotplug_init(parent, OBJECT(s), &s->gpe_cpu,
606 PIIX4_CPU_HOTPLUG_IO_BASE);
607
608 if (s->acpi_memory_hotplug.is_enabled) {
609 acpi_memory_hotplug_init(parent, OBJECT(s), &s->acpi_memory_hotplug,
610 ACPI_MEMORY_HOTPLUG_BASE);
611 }
612 }
613
614 static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
615 {
616 PIIX4PMState *s = PIIX4_PM(adev);
617
618 acpi_memory_ospm_status(&s->acpi_memory_hotplug, list);
619 if (!s->cpu_hotplug_legacy) {
620 acpi_cpu_ospm_status(&s->cpuhp_state, list);
621 }
622 }
623
624 static void piix4_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev)
625 {
626 PIIX4PMState *s = PIIX4_PM(adev);
627
628 acpi_send_gpe_event(&s->ar, s->irq, ev);
629 }
630
631 static Property piix4_pm_properties[] = {
632 DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0),
633 DEFINE_PROP_UINT8(ACPI_PM_PROP_S3_DISABLED, PIIX4PMState, disable_s3, 0),
634 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_DISABLED, PIIX4PMState, disable_s4, 0),
635 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_VAL, PIIX4PMState, s4_val, 2),
636 DEFINE_PROP_BOOL("acpi-pci-hotplug-with-bridge-support", PIIX4PMState,
637 use_acpi_hotplug_bridge, true),
638 DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState,
639 acpi_memory_hotplug.is_enabled, true),
640 DEFINE_PROP_END_OF_LIST(),
641 };
642
643 static void piix4_pm_class_init(ObjectClass *klass, void *data)
644 {
645 DeviceClass *dc = DEVICE_CLASS(klass);
646 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
647 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
648 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass);
649
650 k->realize = piix4_pm_realize;
651 k->config_write = pm_write_config;
652 k->vendor_id = PCI_VENDOR_ID_INTEL;
653 k->device_id = PCI_DEVICE_ID_INTEL_82371AB_3;
654 k->revision = 0x03;
655 k->class_id = PCI_CLASS_BRIDGE_OTHER;
656 dc->reset = piix4_pm_reset;
657 dc->desc = "PM";
658 dc->vmsd = &vmstate_acpi;
659 device_class_set_props(dc, piix4_pm_properties);
660 /*
661 * Reason: part of PIIX4 southbridge, needs to be wired up,
662 * e.g. by mips_malta_init()
663 */
664 dc->user_creatable = false;
665 dc->hotpluggable = false;
666 hc->pre_plug = piix4_device_pre_plug_cb;
667 hc->plug = piix4_device_plug_cb;
668 hc->unplug_request = piix4_device_unplug_request_cb;
669 hc->unplug = piix4_device_unplug_cb;
670 adevc->ospm_status = piix4_ospm_status;
671 adevc->send_event = piix4_send_gpe;
672 adevc->madt_cpu = pc_madt_cpu_entry;
673 }
674
675 static const TypeInfo piix4_pm_info = {
676 .name = TYPE_PIIX4_PM,
677 .parent = TYPE_PCI_DEVICE,
678 .instance_size = sizeof(PIIX4PMState),
679 .class_init = piix4_pm_class_init,
680 .interfaces = (InterfaceInfo[]) {
681 { TYPE_HOTPLUG_HANDLER },
682 { TYPE_ACPI_DEVICE_IF },
683 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
684 { }
685 }
686 };
687
688 static void piix4_pm_register_types(void)
689 {
690 type_register_static(&piix4_pm_info);
691 }
692
693 type_init(piix4_pm_register_types)