1 | #include "qemu/osdep.h" |
2 | #include "hw/boards.h" |
3 | #include "migration/vmstate.h" |
4 | #include "hw/acpi/cpu.h" |
5 | #include "qapi/error.h" |
6 | #include "qapi/qapi-events-misc.h" |
7 | #include "trace.h" |
8 | #include "sysemu/numa.h" |
9 | |
10 | #define ACPI_CPU_HOTPLUG_REG_LEN 12 |
11 | #define ACPI_CPU_SELECTOR_OFFSET_WR 0 |
12 | #define ACPI_CPU_FLAGS_OFFSET_RW 4 |
13 | #define ACPI_CPU_CMD_OFFSET_WR 5 |
14 | #define ACPI_CPU_CMD_DATA_OFFSET_RW 8 |
15 | |
16 | enum { |
17 | CPHP_GET_NEXT_CPU_WITH_EVENT_CMD = 0, |
18 | CPHP_OST_EVENT_CMD = 1, |
19 | CPHP_OST_STATUS_CMD = 2, |
20 | CPHP_CMD_MAX |
21 | }; |
22 | |
23 | static ACPIOSTInfo *acpi_cpu_device_status(int idx, AcpiCpuStatus *cdev) |
24 | { |
25 | ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); |
26 | |
27 | info->slot_type = ACPI_SLOT_TYPE_CPU; |
28 | info->slot = g_strdup_printf("%d" , idx); |
29 | info->source = cdev->ost_event; |
30 | info->status = cdev->ost_status; |
31 | if (cdev->cpu) { |
32 | DeviceState *dev = DEVICE(cdev->cpu); |
33 | if (dev->id) { |
34 | info->device = g_strdup(dev->id); |
35 | info->has_device = true; |
36 | } |
37 | } |
38 | return info; |
39 | } |
40 | |
41 | void acpi_cpu_ospm_status(CPUHotplugState *cpu_st, ACPIOSTInfoList ***list) |
42 | { |
43 | int i; |
44 | |
45 | for (i = 0; i < cpu_st->dev_count; i++) { |
46 | ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1); |
47 | elem->value = acpi_cpu_device_status(i, &cpu_st->devs[i]); |
48 | elem->next = NULL; |
49 | **list = elem; |
50 | *list = &elem->next; |
51 | } |
52 | } |
53 | |
54 | static uint64_t cpu_hotplug_rd(void *opaque, hwaddr addr, unsigned size) |
55 | { |
56 | uint64_t val = 0; |
57 | CPUHotplugState *cpu_st = opaque; |
58 | AcpiCpuStatus *cdev; |
59 | |
60 | if (cpu_st->selector >= cpu_st->dev_count) { |
61 | return val; |
62 | } |
63 | |
64 | cdev = &cpu_st->devs[cpu_st->selector]; |
65 | switch (addr) { |
66 | case ACPI_CPU_FLAGS_OFFSET_RW: /* pack and return is_* fields */ |
67 | val |= cdev->cpu ? 1 : 0; |
68 | val |= cdev->is_inserting ? 2 : 0; |
69 | val |= cdev->is_removing ? 4 : 0; |
70 | trace_cpuhp_acpi_read_flags(cpu_st->selector, val); |
71 | break; |
72 | case ACPI_CPU_CMD_DATA_OFFSET_RW: |
73 | switch (cpu_st->command) { |
74 | case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD: |
75 | val = cpu_st->selector; |
76 | break; |
77 | default: |
78 | break; |
79 | } |
80 | trace_cpuhp_acpi_read_cmd_data(cpu_st->selector, val); |
81 | break; |
82 | default: |
83 | break; |
84 | } |
85 | return val; |
86 | } |
87 | |
88 | static void cpu_hotplug_wr(void *opaque, hwaddr addr, uint64_t data, |
89 | unsigned int size) |
90 | { |
91 | CPUHotplugState *cpu_st = opaque; |
92 | AcpiCpuStatus *cdev; |
93 | ACPIOSTInfo *info; |
94 | |
95 | assert(cpu_st->dev_count); |
96 | |
97 | if (addr) { |
98 | if (cpu_st->selector >= cpu_st->dev_count) { |
99 | trace_cpuhp_acpi_invalid_idx_selected(cpu_st->selector); |
100 | return; |
101 | } |
102 | } |
103 | |
104 | switch (addr) { |
105 | case ACPI_CPU_SELECTOR_OFFSET_WR: /* current CPU selector */ |
106 | cpu_st->selector = data; |
107 | trace_cpuhp_acpi_write_idx(cpu_st->selector); |
108 | break; |
109 | case ACPI_CPU_FLAGS_OFFSET_RW: /* set is_* fields */ |
110 | cdev = &cpu_st->devs[cpu_st->selector]; |
111 | if (data & 2) { /* clear insert event */ |
112 | cdev->is_inserting = false; |
113 | trace_cpuhp_acpi_clear_inserting_evt(cpu_st->selector); |
114 | } else if (data & 4) { /* clear remove event */ |
115 | cdev->is_removing = false; |
116 | trace_cpuhp_acpi_clear_remove_evt(cpu_st->selector); |
117 | } else if (data & 8) { |
118 | DeviceState *dev = NULL; |
119 | HotplugHandler *hotplug_ctrl = NULL; |
120 | |
121 | if (!cdev->cpu || cdev->cpu == first_cpu) { |
122 | trace_cpuhp_acpi_ejecting_invalid_cpu(cpu_st->selector); |
123 | break; |
124 | } |
125 | |
126 | trace_cpuhp_acpi_ejecting_cpu(cpu_st->selector); |
127 | dev = DEVICE(cdev->cpu); |
128 | hotplug_ctrl = qdev_get_hotplug_handler(dev); |
129 | hotplug_handler_unplug(hotplug_ctrl, dev, NULL); |
130 | object_unparent(OBJECT(dev)); |
131 | } |
132 | break; |
133 | case ACPI_CPU_CMD_OFFSET_WR: |
134 | trace_cpuhp_acpi_write_cmd(cpu_st->selector, data); |
135 | if (data < CPHP_CMD_MAX) { |
136 | cpu_st->command = data; |
137 | if (cpu_st->command == CPHP_GET_NEXT_CPU_WITH_EVENT_CMD) { |
138 | uint32_t iter = cpu_st->selector; |
139 | |
140 | do { |
141 | cdev = &cpu_st->devs[iter]; |
142 | if (cdev->is_inserting || cdev->is_removing) { |
143 | cpu_st->selector = iter; |
144 | trace_cpuhp_acpi_cpu_has_events(cpu_st->selector, |
145 | cdev->is_inserting, cdev->is_removing); |
146 | break; |
147 | } |
148 | iter = iter + 1 < cpu_st->dev_count ? iter + 1 : 0; |
149 | } while (iter != cpu_st->selector); |
150 | } |
151 | } |
152 | break; |
153 | case ACPI_CPU_CMD_DATA_OFFSET_RW: |
154 | switch (cpu_st->command) { |
155 | case CPHP_OST_EVENT_CMD: { |
156 | cdev = &cpu_st->devs[cpu_st->selector]; |
157 | cdev->ost_event = data; |
158 | trace_cpuhp_acpi_write_ost_ev(cpu_st->selector, cdev->ost_event); |
159 | break; |
160 | } |
161 | case CPHP_OST_STATUS_CMD: { |
162 | cdev = &cpu_st->devs[cpu_st->selector]; |
163 | cdev->ost_status = data; |
164 | info = acpi_cpu_device_status(cpu_st->selector, cdev); |
165 | qapi_event_send_acpi_device_ost(info); |
166 | qapi_free_ACPIOSTInfo(info); |
167 | trace_cpuhp_acpi_write_ost_status(cpu_st->selector, |
168 | cdev->ost_status); |
169 | break; |
170 | } |
171 | default: |
172 | break; |
173 | } |
174 | break; |
175 | default: |
176 | break; |
177 | } |
178 | } |
179 | |
180 | static const MemoryRegionOps cpu_hotplug_ops = { |
181 | .read = cpu_hotplug_rd, |
182 | .write = cpu_hotplug_wr, |
183 | .endianness = DEVICE_LITTLE_ENDIAN, |
184 | .valid = { |
185 | .min_access_size = 1, |
186 | .max_access_size = 4, |
187 | }, |
188 | }; |
189 | |
190 | void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner, |
191 | CPUHotplugState *state, hwaddr base_addr) |
192 | { |
193 | MachineState *machine = MACHINE(qdev_get_machine()); |
194 | MachineClass *mc = MACHINE_GET_CLASS(machine); |
195 | const CPUArchIdList *id_list; |
196 | int i; |
197 | |
198 | assert(mc->possible_cpu_arch_ids); |
199 | id_list = mc->possible_cpu_arch_ids(machine); |
200 | state->dev_count = id_list->len; |
201 | state->devs = g_new0(typeof(*state->devs), state->dev_count); |
202 | for (i = 0; i < id_list->len; i++) { |
203 | state->devs[i].cpu = CPU(id_list->cpus[i].cpu); |
204 | state->devs[i].arch_id = id_list->cpus[i].arch_id; |
205 | } |
206 | memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state, |
207 | "acpi-mem-hotplug" , ACPI_CPU_HOTPLUG_REG_LEN); |
208 | memory_region_add_subregion(as, base_addr, &state->ctrl_reg); |
209 | } |
210 | |
211 | static AcpiCpuStatus *get_cpu_status(CPUHotplugState *cpu_st, DeviceState *dev) |
212 | { |
213 | CPUClass *k = CPU_GET_CLASS(dev); |
214 | uint64_t cpu_arch_id = k->get_arch_id(CPU(dev)); |
215 | int i; |
216 | |
217 | for (i = 0; i < cpu_st->dev_count; i++) { |
218 | if (cpu_arch_id == cpu_st->devs[i].arch_id) { |
219 | return &cpu_st->devs[i]; |
220 | } |
221 | } |
222 | return NULL; |
223 | } |
224 | |
225 | void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev, |
226 | CPUHotplugState *cpu_st, DeviceState *dev, Error **errp) |
227 | { |
228 | AcpiCpuStatus *cdev; |
229 | |
230 | cdev = get_cpu_status(cpu_st, dev); |
231 | if (!cdev) { |
232 | return; |
233 | } |
234 | |
235 | cdev->cpu = CPU(dev); |
236 | if (dev->hotplugged) { |
237 | cdev->is_inserting = true; |
238 | acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); |
239 | } |
240 | } |
241 | |
242 | void acpi_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, |
243 | CPUHotplugState *cpu_st, |
244 | DeviceState *dev, Error **errp) |
245 | { |
246 | AcpiCpuStatus *cdev; |
247 | |
248 | cdev = get_cpu_status(cpu_st, dev); |
249 | if (!cdev) { |
250 | return; |
251 | } |
252 | |
253 | cdev->is_removing = true; |
254 | acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); |
255 | } |
256 | |
257 | void acpi_cpu_unplug_cb(CPUHotplugState *cpu_st, |
258 | DeviceState *dev, Error **errp) |
259 | { |
260 | AcpiCpuStatus *cdev; |
261 | |
262 | cdev = get_cpu_status(cpu_st, dev); |
263 | if (!cdev) { |
264 | return; |
265 | } |
266 | |
267 | cdev->cpu = NULL; |
268 | } |
269 | |
270 | static const VMStateDescription vmstate_cpuhp_sts = { |
271 | .name = "CPU hotplug device state" , |
272 | .version_id = 1, |
273 | .minimum_version_id = 1, |
274 | .minimum_version_id_old = 1, |
275 | .fields = (VMStateField[]) { |
276 | VMSTATE_BOOL(is_inserting, AcpiCpuStatus), |
277 | VMSTATE_BOOL(is_removing, AcpiCpuStatus), |
278 | VMSTATE_UINT32(ost_event, AcpiCpuStatus), |
279 | VMSTATE_UINT32(ost_status, AcpiCpuStatus), |
280 | VMSTATE_END_OF_LIST() |
281 | } |
282 | }; |
283 | |
284 | const VMStateDescription vmstate_cpu_hotplug = { |
285 | .name = "CPU hotplug state" , |
286 | .version_id = 1, |
287 | .minimum_version_id = 1, |
288 | .minimum_version_id_old = 1, |
289 | .fields = (VMStateField[]) { |
290 | VMSTATE_UINT32(selector, CPUHotplugState), |
291 | VMSTATE_UINT8(command, CPUHotplugState), |
292 | VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, CPUHotplugState, dev_count, |
293 | vmstate_cpuhp_sts, AcpiCpuStatus), |
294 | VMSTATE_END_OF_LIST() |
295 | } |
296 | }; |
297 | |
298 | #define CPU_NAME_FMT "C%.03X" |
299 | #define CPUHP_RES_DEVICE "PRES" |
300 | #define CPU_LOCK "CPLK" |
301 | #define CPU_STS_METHOD "CSTA" |
302 | #define CPU_SCAN_METHOD "CSCN" |
303 | #define CPU_NOTIFY_METHOD "CTFY" |
304 | #define CPU_EJECT_METHOD "CEJ0" |
305 | #define CPU_OST_METHOD "COST" |
306 | |
307 | #define CPU_ENABLED "CPEN" |
308 | #define CPU_SELECTOR "CSEL" |
309 | #define CPU_COMMAND "CCMD" |
310 | #define CPU_DATA "CDAT" |
311 | #define CPU_INSERT_EVENT "CINS" |
312 | #define CPU_REMOVE_EVENT "CRMV" |
313 | #define CPU_EJECT_EVENT "CEJ0" |
314 | |
315 | void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts, |
316 | hwaddr io_base, |
317 | const char *res_root, |
318 | const char *event_handler_method) |
319 | { |
320 | Aml *ifctx; |
321 | Aml *field; |
322 | Aml *method; |
323 | Aml *cpu_ctrl_dev; |
324 | Aml *cpus_dev; |
325 | Aml *zero = aml_int(0); |
326 | Aml *one = aml_int(1); |
327 | Aml *sb_scope = aml_scope("_SB" ); |
328 | MachineClass *mc = MACHINE_GET_CLASS(machine); |
329 | const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine); |
330 | char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root); |
331 | Object *obj = object_resolve_path_type("" , TYPE_ACPI_DEVICE_IF, NULL); |
332 | AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); |
333 | AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj); |
334 | |
335 | cpu_ctrl_dev = aml_device("%s" , cphp_res_path); |
336 | { |
337 | Aml *crs; |
338 | |
339 | aml_append(cpu_ctrl_dev, |
340 | aml_name_decl("_HID" , aml_eisaid("PNP0A06" ))); |
341 | aml_append(cpu_ctrl_dev, |
342 | aml_name_decl("_UID" , aml_string("CPU Hotplug resources" ))); |
343 | aml_append(cpu_ctrl_dev, aml_mutex(CPU_LOCK, 0)); |
344 | |
345 | crs = aml_resource_template(); |
346 | aml_append(crs, aml_io(AML_DECODE16, io_base, io_base, 1, |
347 | ACPI_CPU_HOTPLUG_REG_LEN)); |
348 | aml_append(cpu_ctrl_dev, aml_name_decl("_CRS" , crs)); |
349 | |
350 | /* declare CPU hotplug MMIO region with related access fields */ |
351 | aml_append(cpu_ctrl_dev, |
352 | aml_operation_region("PRST" , AML_SYSTEM_IO, aml_int(io_base), |
353 | ACPI_CPU_HOTPLUG_REG_LEN)); |
354 | |
355 | field = aml_field("PRST" , AML_BYTE_ACC, AML_NOLOCK, |
356 | AML_WRITE_AS_ZEROS); |
357 | aml_append(field, aml_reserved_field(ACPI_CPU_FLAGS_OFFSET_RW * 8)); |
358 | /* 1 if enabled, read only */ |
359 | aml_append(field, aml_named_field(CPU_ENABLED, 1)); |
360 | /* (read) 1 if has a insert event. (write) 1 to clear event */ |
361 | aml_append(field, aml_named_field(CPU_INSERT_EVENT, 1)); |
362 | /* (read) 1 if has a remove event. (write) 1 to clear event */ |
363 | aml_append(field, aml_named_field(CPU_REMOVE_EVENT, 1)); |
364 | /* initiates device eject, write only */ |
365 | aml_append(field, aml_named_field(CPU_EJECT_EVENT, 1)); |
366 | aml_append(field, aml_reserved_field(4)); |
367 | aml_append(field, aml_named_field(CPU_COMMAND, 8)); |
368 | aml_append(cpu_ctrl_dev, field); |
369 | |
370 | field = aml_field("PRST" , AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE); |
371 | /* CPU selector, write only */ |
372 | aml_append(field, aml_named_field(CPU_SELECTOR, 32)); |
373 | /* flags + cmd + 2byte align */ |
374 | aml_append(field, aml_reserved_field(4 * 8)); |
375 | aml_append(field, aml_named_field(CPU_DATA, 32)); |
376 | aml_append(cpu_ctrl_dev, field); |
377 | |
378 | if (opts.has_legacy_cphp) { |
379 | method = aml_method("_INI" , 0, AML_SERIALIZED); |
380 | /* switch off legacy CPU hotplug HW and use new one, |
381 | * on reboot system is in new mode and writing 0 |
382 | * in CPU_SELECTOR selects BSP, which is NOP at |
383 | * the time _INI is called */ |
384 | aml_append(method, aml_store(zero, aml_name(CPU_SELECTOR))); |
385 | aml_append(cpu_ctrl_dev, method); |
386 | } |
387 | } |
388 | aml_append(sb_scope, cpu_ctrl_dev); |
389 | |
390 | cpus_dev = aml_device("\\_SB.CPUS" ); |
391 | { |
392 | int i; |
393 | Aml *ctrl_lock = aml_name("%s.%s" , cphp_res_path, CPU_LOCK); |
394 | Aml *cpu_selector = aml_name("%s.%s" , cphp_res_path, CPU_SELECTOR); |
395 | Aml *is_enabled = aml_name("%s.%s" , cphp_res_path, CPU_ENABLED); |
396 | Aml *cpu_cmd = aml_name("%s.%s" , cphp_res_path, CPU_COMMAND); |
397 | Aml *cpu_data = aml_name("%s.%s" , cphp_res_path, CPU_DATA); |
398 | Aml *ins_evt = aml_name("%s.%s" , cphp_res_path, CPU_INSERT_EVENT); |
399 | Aml *rm_evt = aml_name("%s.%s" , cphp_res_path, CPU_REMOVE_EVENT); |
400 | Aml *ej_evt = aml_name("%s.%s" , cphp_res_path, CPU_EJECT_EVENT); |
401 | |
402 | aml_append(cpus_dev, aml_name_decl("_HID" , aml_string("ACPI0010" ))); |
403 | aml_append(cpus_dev, aml_name_decl("_CID" , aml_eisaid("PNP0A05" ))); |
404 | |
405 | method = aml_method(CPU_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); |
406 | for (i = 0; i < arch_ids->len; i++) { |
407 | Aml *cpu = aml_name(CPU_NAME_FMT, i); |
408 | Aml *uid = aml_arg(0); |
409 | Aml *event = aml_arg(1); |
410 | |
411 | ifctx = aml_if(aml_equal(uid, aml_int(i))); |
412 | { |
413 | aml_append(ifctx, aml_notify(cpu, event)); |
414 | } |
415 | aml_append(method, ifctx); |
416 | } |
417 | aml_append(cpus_dev, method); |
418 | |
419 | method = aml_method(CPU_STS_METHOD, 1, AML_SERIALIZED); |
420 | { |
421 | Aml *idx = aml_arg(0); |
422 | Aml *sta = aml_local(0); |
423 | |
424 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); |
425 | aml_append(method, aml_store(idx, cpu_selector)); |
426 | aml_append(method, aml_store(zero, sta)); |
427 | ifctx = aml_if(aml_equal(is_enabled, one)); |
428 | { |
429 | aml_append(ifctx, aml_store(aml_int(0xF), sta)); |
430 | } |
431 | aml_append(method, ifctx); |
432 | aml_append(method, aml_release(ctrl_lock)); |
433 | aml_append(method, aml_return(sta)); |
434 | } |
435 | aml_append(cpus_dev, method); |
436 | |
437 | method = aml_method(CPU_EJECT_METHOD, 1, AML_SERIALIZED); |
438 | { |
439 | Aml *idx = aml_arg(0); |
440 | |
441 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); |
442 | aml_append(method, aml_store(idx, cpu_selector)); |
443 | aml_append(method, aml_store(one, ej_evt)); |
444 | aml_append(method, aml_release(ctrl_lock)); |
445 | } |
446 | aml_append(cpus_dev, method); |
447 | |
448 | method = aml_method(CPU_SCAN_METHOD, 0, AML_SERIALIZED); |
449 | { |
450 | Aml *else_ctx; |
451 | Aml *while_ctx; |
452 | Aml *has_event = aml_local(0); |
453 | Aml *dev_chk = aml_int(1); |
454 | Aml *eject_req = aml_int(3); |
455 | Aml *next_cpu_cmd = aml_int(CPHP_GET_NEXT_CPU_WITH_EVENT_CMD); |
456 | |
457 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); |
458 | aml_append(method, aml_store(one, has_event)); |
459 | while_ctx = aml_while(aml_equal(has_event, one)); |
460 | { |
461 | /* clear loop exit condition, ins_evt/rm_evt checks |
462 | * will set it to 1 while next_cpu_cmd returns a CPU |
463 | * with events */ |
464 | aml_append(while_ctx, aml_store(zero, has_event)); |
465 | aml_append(while_ctx, aml_store(next_cpu_cmd, cpu_cmd)); |
466 | ifctx = aml_if(aml_equal(ins_evt, one)); |
467 | { |
468 | aml_append(ifctx, |
469 | aml_call2(CPU_NOTIFY_METHOD, cpu_data, dev_chk)); |
470 | aml_append(ifctx, aml_store(one, ins_evt)); |
471 | aml_append(ifctx, aml_store(one, has_event)); |
472 | } |
473 | aml_append(while_ctx, ifctx); |
474 | else_ctx = aml_else(); |
475 | ifctx = aml_if(aml_equal(rm_evt, one)); |
476 | { |
477 | aml_append(ifctx, |
478 | aml_call2(CPU_NOTIFY_METHOD, cpu_data, eject_req)); |
479 | aml_append(ifctx, aml_store(one, rm_evt)); |
480 | aml_append(ifctx, aml_store(one, has_event)); |
481 | } |
482 | aml_append(else_ctx, ifctx); |
483 | aml_append(while_ctx, else_ctx); |
484 | } |
485 | aml_append(method, while_ctx); |
486 | aml_append(method, aml_release(ctrl_lock)); |
487 | } |
488 | aml_append(cpus_dev, method); |
489 | |
490 | method = aml_method(CPU_OST_METHOD, 4, AML_SERIALIZED); |
491 | { |
492 | Aml *uid = aml_arg(0); |
493 | Aml *ev_cmd = aml_int(CPHP_OST_EVENT_CMD); |
494 | Aml *st_cmd = aml_int(CPHP_OST_STATUS_CMD); |
495 | |
496 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); |
497 | aml_append(method, aml_store(uid, cpu_selector)); |
498 | aml_append(method, aml_store(ev_cmd, cpu_cmd)); |
499 | aml_append(method, aml_store(aml_arg(1), cpu_data)); |
500 | aml_append(method, aml_store(st_cmd, cpu_cmd)); |
501 | aml_append(method, aml_store(aml_arg(2), cpu_data)); |
502 | aml_append(method, aml_release(ctrl_lock)); |
503 | } |
504 | aml_append(cpus_dev, method); |
505 | |
506 | /* build Processor object for each processor */ |
507 | for (i = 0; i < arch_ids->len; i++) { |
508 | Aml *dev; |
509 | Aml *uid = aml_int(i); |
510 | GArray *madt_buf = g_array_new(0, 1, 1); |
511 | int arch_id = arch_ids->cpus[i].arch_id; |
512 | |
513 | if (opts.acpi_1_compatible && arch_id < 255) { |
514 | dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i); |
515 | } else { |
516 | dev = aml_device(CPU_NAME_FMT, i); |
517 | aml_append(dev, aml_name_decl("_HID" , aml_string("ACPI0007" ))); |
518 | aml_append(dev, aml_name_decl("_UID" , uid)); |
519 | } |
520 | |
521 | method = aml_method("_STA" , 0, AML_SERIALIZED); |
522 | aml_append(method, aml_return(aml_call1(CPU_STS_METHOD, uid))); |
523 | aml_append(dev, method); |
524 | |
525 | /* build _MAT object */ |
526 | assert(adevc && adevc->madt_cpu); |
527 | adevc->madt_cpu(adev, i, arch_ids, madt_buf); |
528 | switch (madt_buf->data[0]) { |
529 | case ACPI_APIC_PROCESSOR: { |
530 | AcpiMadtProcessorApic *apic = (void *)madt_buf->data; |
531 | apic->flags = cpu_to_le32(1); |
532 | break; |
533 | } |
534 | case ACPI_APIC_LOCAL_X2APIC: { |
535 | AcpiMadtProcessorX2Apic *apic = (void *)madt_buf->data; |
536 | apic->flags = cpu_to_le32(1); |
537 | break; |
538 | } |
539 | default: |
540 | assert(0); |
541 | } |
542 | aml_append(dev, aml_name_decl("_MAT" , |
543 | aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data))); |
544 | g_array_free(madt_buf, true); |
545 | |
546 | if (CPU(arch_ids->cpus[i].cpu) != first_cpu) { |
547 | method = aml_method("_EJ0" , 1, AML_NOTSERIALIZED); |
548 | aml_append(method, aml_call1(CPU_EJECT_METHOD, uid)); |
549 | aml_append(dev, method); |
550 | } |
551 | |
552 | method = aml_method("_OST" , 3, AML_SERIALIZED); |
553 | aml_append(method, |
554 | aml_call4(CPU_OST_METHOD, uid, aml_arg(0), |
555 | aml_arg(1), aml_arg(2)) |
556 | ); |
557 | aml_append(dev, method); |
558 | |
559 | /* Linux guests discard SRAT info for non-present CPUs |
560 | * as a result _PXM is required for all CPUs which might |
561 | * be hot-plugged. For simplicity, add it for all CPUs. |
562 | */ |
563 | if (arch_ids->cpus[i].props.has_node_id) { |
564 | aml_append(dev, aml_name_decl("_PXM" , |
565 | aml_int(arch_ids->cpus[i].props.node_id))); |
566 | } |
567 | |
568 | aml_append(cpus_dev, dev); |
569 | } |
570 | } |
571 | aml_append(sb_scope, cpus_dev); |
572 | aml_append(table, sb_scope); |
573 | |
574 | method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); |
575 | aml_append(method, aml_call0("\\_SB.CPUS." CPU_SCAN_METHOD)); |
576 | aml_append(table, method); |
577 | |
578 | g_free(cphp_res_path); |
579 | } |
580 | |