accel: Move Xen accelerator code under accel/xen/
[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_pci_hotplug;
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_pci_hotplug(void *opaque, int version_id)
208 {
209 PIIX4PMState *s = opaque;
210 return s->use_acpi_pci_hotplug;
211 }
212
213 static bool vmstate_test_no_use_acpi_pci_hotplug(void *opaque, int version_id)
214 {
215 PIIX4PMState *s = opaque;
216 return !s->use_acpi_pci_hotplug;
217 }
218
219 static bool vmstate_test_use_memhp(void *opaque)
220 {
221 PIIX4PMState *s = opaque;
222 return s->acpi_memory_hotplug.is_enabled;
223 }
224
225 static const VMStateDescription vmstate_memhp_state = {
226 .name = "piix4_pm/memhp",
227 .version_id = 1,
228 .minimum_version_id = 1,
229 .minimum_version_id_old = 1,
230 .needed = vmstate_test_use_memhp,
231 .fields = (VMStateField[]) {
232 VMSTATE_MEMORY_HOTPLUG(acpi_memory_hotplug, PIIX4PMState),
233 VMSTATE_END_OF_LIST()
234 }
235 };
236
237 static bool vmstate_test_use_cpuhp(void *opaque)
238 {
239 PIIX4PMState *s = opaque;
240 return !s->cpu_hotplug_legacy;
241 }
242
243 static int vmstate_cpuhp_pre_load(void *opaque)
244 {
245 Object *obj = OBJECT(opaque);
246 object_property_set_bool(obj, false, "cpu-hotplug-legacy", &error_abort);
247 return 0;
248 }
249
250 static const VMStateDescription vmstate_cpuhp_state = {
251 .name = "piix4_pm/cpuhp",
252 .version_id = 1,
253 .minimum_version_id = 1,
254 .minimum_version_id_old = 1,
255 .needed = vmstate_test_use_cpuhp,
256 .pre_load = vmstate_cpuhp_pre_load,
257 .fields = (VMStateField[]) {
258 VMSTATE_CPU_HOTPLUG(cpuhp_state, PIIX4PMState),
259 VMSTATE_END_OF_LIST()
260 }
261 };
262
263 static bool piix4_vmstate_need_smbus(void *opaque, int version_id)
264 {
265 return pm_smbus_vmstate_needed();
266 }
267
268 /* qemu-kvm 1.2 uses version 3 but advertised as 2
269 * To support incoming qemu-kvm 1.2 migration, change version_id
270 * and minimum_version_id to 2 below (which breaks migration from
271 * qemu 1.2).
272 *
273 */
274 static const VMStateDescription vmstate_acpi = {
275 .name = "piix4_pm",
276 .version_id = 3,
277 .minimum_version_id = 3,
278 .post_load = vmstate_acpi_post_load,
279 .fields = (VMStateField[]) {
280 VMSTATE_PCI_DEVICE(parent_obj, PIIX4PMState),
281 VMSTATE_UINT16(ar.pm1.evt.sts, PIIX4PMState),
282 VMSTATE_UINT16(ar.pm1.evt.en, PIIX4PMState),
283 VMSTATE_UINT16(ar.pm1.cnt.cnt, PIIX4PMState),
284 VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState),
285 VMSTATE_STRUCT_TEST(smb, PIIX4PMState, piix4_vmstate_need_smbus, 3,
286 pmsmb_vmstate, PMSMBus),
287 VMSTATE_TIMER_PTR(ar.tmr.timer, PIIX4PMState),
288 VMSTATE_INT64(ar.tmr.overflow_time, PIIX4PMState),
289 VMSTATE_STRUCT(ar.gpe, PIIX4PMState, 2, vmstate_gpe, ACPIGPE),
290 VMSTATE_STRUCT_TEST(
291 acpi_pci_hotplug.acpi_pcihp_pci_status[ACPI_PCIHP_BSEL_DEFAULT],
292 PIIX4PMState,
293 vmstate_test_no_use_acpi_pci_hotplug,
294 2, vmstate_pci_status,
295 struct AcpiPciHpPciStatus),
296 VMSTATE_PCI_HOTPLUG(acpi_pci_hotplug, PIIX4PMState,
297 vmstate_test_use_acpi_pci_hotplug),
298 VMSTATE_END_OF_LIST()
299 },
300 .subsections = (const VMStateDescription*[]) {
301 &vmstate_memhp_state,
302 &vmstate_cpuhp_state,
303 NULL
304 }
305 };
306
307 static void piix4_pm_reset(DeviceState *dev)
308 {
309 PIIX4PMState *s = PIIX4_PM(dev);
310 PCIDevice *d = PCI_DEVICE(s);
311 uint8_t *pci_conf = d->config;
312
313 pci_conf[0x58] = 0;
314 pci_conf[0x59] = 0;
315 pci_conf[0x5a] = 0;
316 pci_conf[0x5b] = 0;
317
318 pci_conf[0x40] = 0x01; /* PM io base read only bit */
319 pci_conf[0x80] = 0;
320
321 if (!s->smm_enabled) {
322 /* Mark SMM as already inited (until KVM supports SMM). */
323 pci_conf[0x5B] = 0x02;
324 }
325 pm_io_space_update(s);
326 acpi_pcihp_reset(&s->acpi_pci_hotplug);
327 }
328
329 static void piix4_pm_powerdown_req(Notifier *n, void *opaque)
330 {
331 PIIX4PMState *s = container_of(n, PIIX4PMState, powerdown_notifier);
332
333 assert(s != NULL);
334 acpi_pm1_evt_power_down(&s->ar);
335 }
336
337 static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev,
338 DeviceState *dev, Error **errp)
339 {
340 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
341
342 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
343 acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
344 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
345 if (!s->acpi_memory_hotplug.is_enabled) {
346 error_setg(errp,
347 "memory hotplug is not enabled: %s.memory-hotplug-support "
348 "is not set", object_get_typename(OBJECT(s)));
349 }
350 } else if (
351 !object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
352 error_setg(errp, "acpi: device pre plug request for not supported"
353 " device type: %s", object_get_typename(OBJECT(dev)));
354 }
355 }
356
357 static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
358 DeviceState *dev, Error **errp)
359 {
360 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
361
362 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
363 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
364 nvdimm_acpi_plug_cb(hotplug_dev, dev);
365 } else {
366 acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug,
367 dev, errp);
368 }
369 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
370 acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev, errp);
371 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
372 if (s->cpu_hotplug_legacy) {
373 legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
374 } else {
375 acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
376 }
377 } else {
378 g_assert_not_reached();
379 }
380 }
381
382 static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
383 DeviceState *dev, Error **errp)
384 {
385 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
386
387 if (s->acpi_memory_hotplug.is_enabled &&
388 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
389 acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug,
390 dev, errp);
391 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
392 acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug,
393 dev, errp);
394 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
395 !s->cpu_hotplug_legacy) {
396 acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
397 } else {
398 error_setg(errp, "acpi: device unplug request for not supported device"
399 " type: %s", object_get_typename(OBJECT(dev)));
400 }
401 }
402
403 static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
404 DeviceState *dev, Error **errp)
405 {
406 PIIX4PMState *s = PIIX4_PM(hotplug_dev);
407
408 if (s->acpi_memory_hotplug.is_enabled &&
409 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
410 acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp);
411 } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
412 acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
413 errp);
414 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
415 !s->cpu_hotplug_legacy) {
416 acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
417 } else {
418 error_setg(errp, "acpi: device unplug for not supported device"
419 " type: %s", object_get_typename(OBJECT(dev)));
420 }
421 }
422
423 static void piix4_pm_machine_ready(Notifier *n, void *opaque)
424 {
425 PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready);
426 PCIDevice *d = PCI_DEVICE(s);
427 MemoryRegion *io_as = pci_address_space_io(d);
428 uint8_t *pci_conf;
429
430 pci_conf = d->config;
431 pci_conf[0x5f] = 0x10 |
432 (memory_region_present(io_as, 0x378) ? 0x80 : 0);
433 pci_conf[0x63] = 0x60;
434 pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) |
435 (memory_region_present(io_as, 0x2f8) ? 0x90 : 0);
436 }
437
438 static void piix4_pm_add_propeties(PIIX4PMState *s)
439 {
440 static const uint8_t acpi_enable_cmd = ACPI_ENABLE;
441 static const uint8_t acpi_disable_cmd = ACPI_DISABLE;
442 static const uint32_t gpe0_blk = GPE_BASE;
443 static const uint32_t gpe0_blk_len = GPE_LEN;
444 static const uint16_t sci_int = 9;
445
446 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
447 &acpi_enable_cmd, OBJ_PROP_FLAG_READ);
448 object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
449 &acpi_disable_cmd, OBJ_PROP_FLAG_READ);
450 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
451 &gpe0_blk, OBJ_PROP_FLAG_READ);
452 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
453 &gpe0_blk_len, OBJ_PROP_FLAG_READ);
454 object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
455 &sci_int, OBJ_PROP_FLAG_READ);
456 object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
457 &s->io_base, OBJ_PROP_FLAG_READ);
458 }
459
460 static void piix4_pm_realize(PCIDevice *dev, Error **errp)
461 {
462 PIIX4PMState *s = PIIX4_PM(dev);
463 uint8_t *pci_conf;
464
465 pci_conf = dev->config;
466 pci_conf[0x06] = 0x80;
467 pci_conf[0x07] = 0x02;
468 pci_conf[0x09] = 0x00;
469 pci_conf[0x3d] = 0x01; // interrupt pin 1
470
471 /* APM */
472 apm_init(dev, &s->apm, apm_ctrl_changed, s);
473
474 if (!s->smm_enabled) {
475 /* Mark SMM as already inited to prevent SMM from running. KVM does not
476 * support SMM mode. */
477 pci_conf[0x5B] = 0x02;
478 }
479
480 /* XXX: which specification is used ? The i82731AB has different
481 mappings */
482 pci_conf[0x90] = s->smb_io_base | 1;
483 pci_conf[0x91] = s->smb_io_base >> 8;
484 pci_conf[0xd2] = 0x09;
485 pm_smbus_init(DEVICE(dev), &s->smb, true);
486 memory_region_set_enabled(&s->smb.io, pci_conf[0xd2] & 1);
487 memory_region_add_subregion(pci_address_space_io(dev),
488 s->smb_io_base, &s->smb.io);
489
490 memory_region_init(&s->io, OBJECT(s), "piix4-pm", 64);
491 memory_region_set_enabled(&s->io, false);
492 memory_region_add_subregion(pci_address_space_io(dev),
493 0, &s->io);
494
495 acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
496 acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
497 acpi_pm1_cnt_init(&s->ar, &s->io, s->disable_s3, s->disable_s4, s->s4_val);
498 acpi_gpe_init(&s->ar, GPE_LEN);
499
500 s->powerdown_notifier.notify = piix4_pm_powerdown_req;
501 qemu_register_powerdown_notifier(&s->powerdown_notifier);
502
503 s->machine_ready.notify = piix4_pm_machine_ready;
504 qemu_add_machine_init_done_notifier(&s->machine_ready);
505
506 piix4_acpi_system_hot_add_init(pci_address_space_io(dev),
507 pci_get_bus(dev), s);
508 qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s), &error_abort);
509
510 piix4_pm_add_propeties(s);
511 }
512
513 I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
514 qemu_irq sci_irq, qemu_irq smi_irq,
515 int smm_enabled, DeviceState **piix4_pm)
516 {
517 DeviceState *dev;
518 PIIX4PMState *s;
519
520 dev = DEVICE(pci_create(bus, devfn, TYPE_PIIX4_PM));
521 qdev_prop_set_uint32(dev, "smb_io_base", smb_io_base);
522 if (piix4_pm) {
523 *piix4_pm = dev;
524 }
525
526 s = PIIX4_PM(dev);
527 s->irq = sci_irq;
528 s->smi_irq = smi_irq;
529 s->smm_enabled = smm_enabled;
530 if (xen_enabled()) {
531 s->use_acpi_pci_hotplug = false;
532 }
533
534 qdev_init_nofail(dev);
535
536 return s->smb.smbus;
537 }
538
539 static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width)
540 {
541 PIIX4PMState *s = opaque;
542 uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr);
543
544 trace_piix4_gpe_readb(addr, width, val);
545 return val;
546 }
547
548 static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
549 unsigned width)
550 {
551 PIIX4PMState *s = opaque;
552
553 trace_piix4_gpe_writeb(addr, width, val);
554 acpi_gpe_ioport_writeb(&s->ar, addr, val);
555 acpi_update_sci(&s->ar, s->irq);
556 }
557
558 static const MemoryRegionOps piix4_gpe_ops = {
559 .read = gpe_readb,
560 .write = gpe_writeb,
561 .valid.min_access_size = 1,
562 .valid.max_access_size = 4,
563 .impl.min_access_size = 1,
564 .impl.max_access_size = 1,
565 .endianness = DEVICE_LITTLE_ENDIAN,
566 };
567
568
569 static bool piix4_get_cpu_hotplug_legacy(Object *obj, Error **errp)
570 {
571 PIIX4PMState *s = PIIX4_PM(obj);
572
573 return s->cpu_hotplug_legacy;
574 }
575
576 static void piix4_set_cpu_hotplug_legacy(Object *obj, bool value, Error **errp)
577 {
578 PIIX4PMState *s = PIIX4_PM(obj);
579
580 assert(!value);
581 if (s->cpu_hotplug_legacy && value == false) {
582 acpi_switch_to_modern_cphp(&s->gpe_cpu, &s->cpuhp_state,
583 PIIX4_CPU_HOTPLUG_IO_BASE);
584 }
585 s->cpu_hotplug_legacy = value;
586 }
587
588 static void piix4_acpi_system_hot_add_init(MemoryRegion *parent,
589 PCIBus *bus, PIIX4PMState *s)
590 {
591 memory_region_init_io(&s->io_gpe, OBJECT(s), &piix4_gpe_ops, s,
592 "acpi-gpe0", GPE_LEN);
593 memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe);
594
595 acpi_pcihp_init(OBJECT(s), &s->acpi_pci_hotplug, bus, parent,
596 s->use_acpi_pci_hotplug);
597
598 s->cpu_hotplug_legacy = true;
599 object_property_add_bool(OBJECT(s), "cpu-hotplug-legacy",
600 piix4_get_cpu_hotplug_legacy,
601 piix4_set_cpu_hotplug_legacy);
602 legacy_acpi_cpu_hotplug_init(parent, OBJECT(s), &s->gpe_cpu,
603 PIIX4_CPU_HOTPLUG_IO_BASE);
604
605 if (s->acpi_memory_hotplug.is_enabled) {
606 acpi_memory_hotplug_init(parent, OBJECT(s), &s->acpi_memory_hotplug,
607 ACPI_MEMORY_HOTPLUG_BASE);
608 }
609 }
610
611 static void piix4_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list)
612 {
613 PIIX4PMState *s = PIIX4_PM(adev);
614
615 acpi_memory_ospm_status(&s->acpi_memory_hotplug, list);
616 if (!s->cpu_hotplug_legacy) {
617 acpi_cpu_ospm_status(&s->cpuhp_state, list);
618 }
619 }
620
621 static void piix4_send_gpe(AcpiDeviceIf *adev, AcpiEventStatusBits ev)
622 {
623 PIIX4PMState *s = PIIX4_PM(adev);
624
625 acpi_send_gpe_event(&s->ar, s->irq, ev);
626 }
627
628 static Property piix4_pm_properties[] = {
629 DEFINE_PROP_UINT32("smb_io_base", PIIX4PMState, smb_io_base, 0),
630 DEFINE_PROP_UINT8(ACPI_PM_PROP_S3_DISABLED, PIIX4PMState, disable_s3, 0),
631 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_DISABLED, PIIX4PMState, disable_s4, 0),
632 DEFINE_PROP_UINT8(ACPI_PM_PROP_S4_VAL, PIIX4PMState, s4_val, 2),
633 DEFINE_PROP_BOOL("acpi-pci-hotplug-with-bridge-support", PIIX4PMState,
634 use_acpi_pci_hotplug, true),
635 DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState,
636 acpi_memory_hotplug.is_enabled, true),
637 DEFINE_PROP_END_OF_LIST(),
638 };
639
640 static void piix4_pm_class_init(ObjectClass *klass, void *data)
641 {
642 DeviceClass *dc = DEVICE_CLASS(klass);
643 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
644 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
645 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass);
646
647 k->realize = piix4_pm_realize;
648 k->config_write = pm_write_config;
649 k->vendor_id = PCI_VENDOR_ID_INTEL;
650 k->device_id = PCI_DEVICE_ID_INTEL_82371AB_3;
651 k->revision = 0x03;
652 k->class_id = PCI_CLASS_BRIDGE_OTHER;
653 dc->reset = piix4_pm_reset;
654 dc->desc = "PM";
655 dc->vmsd = &vmstate_acpi;
656 device_class_set_props(dc, piix4_pm_properties);
657 /*
658 * Reason: part of PIIX4 southbridge, needs to be wired up,
659 * e.g. by mips_malta_init()
660 */
661 dc->user_creatable = false;
662 dc->hotpluggable = false;
663 hc->pre_plug = piix4_device_pre_plug_cb;
664 hc->plug = piix4_device_plug_cb;
665 hc->unplug_request = piix4_device_unplug_request_cb;
666 hc->unplug = piix4_device_unplug_cb;
667 adevc->ospm_status = piix4_ospm_status;
668 adevc->send_event = piix4_send_gpe;
669 adevc->madt_cpu = pc_madt_cpu_entry;
670 }
671
672 static const TypeInfo piix4_pm_info = {
673 .name = TYPE_PIIX4_PM,
674 .parent = TYPE_PCI_DEVICE,
675 .instance_size = sizeof(PIIX4PMState),
676 .class_init = piix4_pm_class_init,
677 .interfaces = (InterfaceInfo[]) {
678 { TYPE_HOTPLUG_HANDLER },
679 { TYPE_ACPI_DEVICE_IF },
680 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
681 { }
682 }
683 };
684
685 static void piix4_pm_register_types(void)
686 {
687 type_register_static(&piix4_pm_info);
688 }
689
690 type_init(piix4_pm_register_types)