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Commit | Line | Data |
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5e1b5d93 IM |
1 | #include "qemu/osdep.h" |
2 | #include "hw/boards.h" | |
d6454270 | 3 | #include "migration/vmstate.h" |
5e1b5d93 IM |
4 | #include "hw/acpi/cpu.h" |
5 | #include "qapi/error.h" | |
27c9188f | 6 | #include "qapi/qapi-events-acpi.h" |
5e1b5d93 | 7 | #include "trace.h" |
27111931 | 8 | #include "sysemu/numa.h" |
5e1b5d93 IM |
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 | |
d2238cb6 IM |
13 | #define ACPI_CPU_CMD_OFFSET_WR 5 |
14 | #define ACPI_CPU_CMD_DATA_OFFSET_RW 8 | |
e6d0c3ce | 15 | #define ACPI_CPU_CMD_DATA2_OFFSET_R 0 |
d2238cb6 | 16 | |
9cc5a90b IM |
17 | #define OVMF_CPUHP_SMI_CMD 4 |
18 | ||
d2238cb6 IM |
19 | enum { |
20 | CPHP_GET_NEXT_CPU_WITH_EVENT_CMD = 0, | |
76623d00 IM |
21 | CPHP_OST_EVENT_CMD = 1, |
22 | CPHP_OST_STATUS_CMD = 2, | |
3a61c8db | 23 | CPHP_GET_CPU_ID_CMD = 3, |
d2238cb6 IM |
24 | CPHP_CMD_MAX |
25 | }; | |
5e1b5d93 | 26 | |
76623d00 IM |
27 | static ACPIOSTInfo *acpi_cpu_device_status(int idx, AcpiCpuStatus *cdev) |
28 | { | |
29 | ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); | |
30 | ||
31 | info->slot_type = ACPI_SLOT_TYPE_CPU; | |
32 | info->slot = g_strdup_printf("%d", idx); | |
33 | info->source = cdev->ost_event; | |
34 | info->status = cdev->ost_status; | |
35 | if (cdev->cpu) { | |
36 | DeviceState *dev = DEVICE(cdev->cpu); | |
37 | if (dev->id) { | |
38 | info->device = g_strdup(dev->id); | |
39 | info->has_device = true; | |
40 | } | |
41 | } | |
42 | return info; | |
43 | } | |
44 | ||
45 | void acpi_cpu_ospm_status(CPUHotplugState *cpu_st, ACPIOSTInfoList ***list) | |
46 | { | |
c3033fd3 | 47 | ACPIOSTInfoList ***tail = list; |
76623d00 IM |
48 | int i; |
49 | ||
50 | for (i = 0; i < cpu_st->dev_count; i++) { | |
c3033fd3 | 51 | QAPI_LIST_APPEND(*tail, acpi_cpu_device_status(i, &cpu_st->devs[i])); |
76623d00 IM |
52 | } |
53 | } | |
54 | ||
5e1b5d93 IM |
55 | static uint64_t cpu_hotplug_rd(void *opaque, hwaddr addr, unsigned size) |
56 | { | |
57 | uint64_t val = 0; | |
58 | CPUHotplugState *cpu_st = opaque; | |
59 | AcpiCpuStatus *cdev; | |
60 | ||
61 | if (cpu_st->selector >= cpu_st->dev_count) { | |
62 | return val; | |
63 | } | |
64 | ||
65 | cdev = &cpu_st->devs[cpu_st->selector]; | |
66 | switch (addr) { | |
67 | case ACPI_CPU_FLAGS_OFFSET_RW: /* pack and return is_* fields */ | |
68 | val |= cdev->cpu ? 1 : 0; | |
d2238cb6 | 69 | val |= cdev->is_inserting ? 2 : 0; |
8872c25a | 70 | val |= cdev->is_removing ? 4 : 0; |
1e6107d9 | 71 | val |= cdev->fw_remove ? 16 : 0; |
5e1b5d93 IM |
72 | trace_cpuhp_acpi_read_flags(cpu_st->selector, val); |
73 | break; | |
d2238cb6 IM |
74 | case ACPI_CPU_CMD_DATA_OFFSET_RW: |
75 | switch (cpu_st->command) { | |
76 | case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD: | |
77 | val = cpu_st->selector; | |
78 | break; | |
3a61c8db IM |
79 | case CPHP_GET_CPU_ID_CMD: |
80 | val = cdev->arch_id & 0xFFFFFFFF; | |
81 | break; | |
d2238cb6 IM |
82 | default: |
83 | break; | |
84 | } | |
85 | trace_cpuhp_acpi_read_cmd_data(cpu_st->selector, val); | |
86 | break; | |
e6d0c3ce IM |
87 | case ACPI_CPU_CMD_DATA2_OFFSET_R: |
88 | switch (cpu_st->command) { | |
89 | case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD: | |
90 | val = 0; | |
91 | break; | |
3a61c8db IM |
92 | case CPHP_GET_CPU_ID_CMD: |
93 | val = cdev->arch_id >> 32; | |
94 | break; | |
e6d0c3ce IM |
95 | default: |
96 | break; | |
97 | } | |
98 | trace_cpuhp_acpi_read_cmd_data2(cpu_st->selector, val); | |
99 | break; | |
5e1b5d93 IM |
100 | default: |
101 | break; | |
102 | } | |
103 | return val; | |
104 | } | |
105 | ||
106 | static void cpu_hotplug_wr(void *opaque, hwaddr addr, uint64_t data, | |
107 | unsigned int size) | |
108 | { | |
109 | CPUHotplugState *cpu_st = opaque; | |
d2238cb6 | 110 | AcpiCpuStatus *cdev; |
76623d00 | 111 | ACPIOSTInfo *info; |
5e1b5d93 IM |
112 | |
113 | assert(cpu_st->dev_count); | |
114 | ||
115 | if (addr) { | |
116 | if (cpu_st->selector >= cpu_st->dev_count) { | |
117 | trace_cpuhp_acpi_invalid_idx_selected(cpu_st->selector); | |
118 | return; | |
119 | } | |
120 | } | |
121 | ||
122 | switch (addr) { | |
123 | case ACPI_CPU_SELECTOR_OFFSET_WR: /* current CPU selector */ | |
124 | cpu_st->selector = data; | |
125 | trace_cpuhp_acpi_write_idx(cpu_st->selector); | |
126 | break; | |
d2238cb6 IM |
127 | case ACPI_CPU_FLAGS_OFFSET_RW: /* set is_* fields */ |
128 | cdev = &cpu_st->devs[cpu_st->selector]; | |
129 | if (data & 2) { /* clear insert event */ | |
130 | cdev->is_inserting = false; | |
131 | trace_cpuhp_acpi_clear_inserting_evt(cpu_st->selector); | |
8872c25a IM |
132 | } else if (data & 4) { /* clear remove event */ |
133 | cdev->is_removing = false; | |
134 | trace_cpuhp_acpi_clear_remove_evt(cpu_st->selector); | |
135 | } else if (data & 8) { | |
136 | DeviceState *dev = NULL; | |
137 | HotplugHandler *hotplug_ctrl = NULL; | |
138 | ||
c2d2a81b | 139 | if (!cdev->cpu || cdev->cpu == first_cpu) { |
8872c25a IM |
140 | trace_cpuhp_acpi_ejecting_invalid_cpu(cpu_st->selector); |
141 | break; | |
142 | } | |
143 | ||
144 | trace_cpuhp_acpi_ejecting_cpu(cpu_st->selector); | |
145 | dev = DEVICE(cdev->cpu); | |
146 | hotplug_ctrl = qdev_get_hotplug_handler(dev); | |
147 | hotplug_handler_unplug(hotplug_ctrl, dev, NULL); | |
07578b0a | 148 | object_unparent(OBJECT(dev)); |
1e6107d9 IM |
149 | cdev->fw_remove = false; |
150 | } else if (data & 16) { | |
151 | if (!cdev->cpu || cdev->cpu == first_cpu) { | |
152 | trace_cpuhp_acpi_fw_remove_invalid_cpu(cpu_st->selector); | |
153 | break; | |
154 | } | |
155 | trace_cpuhp_acpi_fw_remove_cpu(cpu_st->selector); | |
156 | cdev->fw_remove = true; | |
d2238cb6 IM |
157 | } |
158 | break; | |
159 | case ACPI_CPU_CMD_OFFSET_WR: | |
160 | trace_cpuhp_acpi_write_cmd(cpu_st->selector, data); | |
161 | if (data < CPHP_CMD_MAX) { | |
162 | cpu_st->command = data; | |
163 | if (cpu_st->command == CPHP_GET_NEXT_CPU_WITH_EVENT_CMD) { | |
164 | uint32_t iter = cpu_st->selector; | |
165 | ||
166 | do { | |
167 | cdev = &cpu_st->devs[iter]; | |
1e6107d9 IM |
168 | if (cdev->is_inserting || cdev->is_removing || |
169 | cdev->fw_remove) { | |
d2238cb6 IM |
170 | cpu_st->selector = iter; |
171 | trace_cpuhp_acpi_cpu_has_events(cpu_st->selector, | |
8872c25a | 172 | cdev->is_inserting, cdev->is_removing); |
d2238cb6 IM |
173 | break; |
174 | } | |
175 | iter = iter + 1 < cpu_st->dev_count ? iter + 1 : 0; | |
176 | } while (iter != cpu_st->selector); | |
177 | } | |
178 | } | |
179 | break; | |
76623d00 IM |
180 | case ACPI_CPU_CMD_DATA_OFFSET_RW: |
181 | switch (cpu_st->command) { | |
182 | case CPHP_OST_EVENT_CMD: { | |
183 | cdev = &cpu_st->devs[cpu_st->selector]; | |
184 | cdev->ost_event = data; | |
185 | trace_cpuhp_acpi_write_ost_ev(cpu_st->selector, cdev->ost_event); | |
186 | break; | |
187 | } | |
188 | case CPHP_OST_STATUS_CMD: { | |
189 | cdev = &cpu_st->devs[cpu_st->selector]; | |
190 | cdev->ost_status = data; | |
191 | info = acpi_cpu_device_status(cpu_st->selector, cdev); | |
3ab72385 | 192 | qapi_event_send_acpi_device_ost(info); |
76623d00 IM |
193 | qapi_free_ACPIOSTInfo(info); |
194 | trace_cpuhp_acpi_write_ost_status(cpu_st->selector, | |
195 | cdev->ost_status); | |
196 | break; | |
197 | } | |
198 | default: | |
199 | break; | |
200 | } | |
201 | break; | |
5e1b5d93 IM |
202 | default: |
203 | break; | |
204 | } | |
205 | } | |
206 | ||
207 | static const MemoryRegionOps cpu_hotplug_ops = { | |
208 | .read = cpu_hotplug_rd, | |
209 | .write = cpu_hotplug_wr, | |
210 | .endianness = DEVICE_LITTLE_ENDIAN, | |
211 | .valid = { | |
212 | .min_access_size = 1, | |
213 | .max_access_size = 4, | |
214 | }, | |
215 | }; | |
216 | ||
217 | void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner, | |
218 | CPUHotplugState *state, hwaddr base_addr) | |
219 | { | |
220 | MachineState *machine = MACHINE(qdev_get_machine()); | |
221 | MachineClass *mc = MACHINE_GET_CLASS(machine); | |
80e5db30 | 222 | const CPUArchIdList *id_list; |
5e1b5d93 IM |
223 | int i; |
224 | ||
225 | assert(mc->possible_cpu_arch_ids); | |
226 | id_list = mc->possible_cpu_arch_ids(machine); | |
227 | state->dev_count = id_list->len; | |
228 | state->devs = g_new0(typeof(*state->devs), state->dev_count); | |
229 | for (i = 0; i < id_list->len; i++) { | |
8aba3842 | 230 | state->devs[i].cpu = CPU(id_list->cpus[i].cpu); |
5e1b5d93 IM |
231 | state->devs[i].arch_id = id_list->cpus[i].arch_id; |
232 | } | |
5e1b5d93 | 233 | memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state, |
119a2ef1 | 234 | "acpi-cpu-hotplug", ACPI_CPU_HOTPLUG_REG_LEN); |
5e1b5d93 IM |
235 | memory_region_add_subregion(as, base_addr, &state->ctrl_reg); |
236 | } | |
237 | ||
238 | static AcpiCpuStatus *get_cpu_status(CPUHotplugState *cpu_st, DeviceState *dev) | |
239 | { | |
240 | CPUClass *k = CPU_GET_CLASS(dev); | |
241 | uint64_t cpu_arch_id = k->get_arch_id(CPU(dev)); | |
242 | int i; | |
243 | ||
244 | for (i = 0; i < cpu_st->dev_count; i++) { | |
245 | if (cpu_arch_id == cpu_st->devs[i].arch_id) { | |
246 | return &cpu_st->devs[i]; | |
247 | } | |
248 | } | |
249 | return NULL; | |
250 | } | |
251 | ||
252 | void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev, | |
253 | CPUHotplugState *cpu_st, DeviceState *dev, Error **errp) | |
254 | { | |
255 | AcpiCpuStatus *cdev; | |
256 | ||
257 | cdev = get_cpu_status(cpu_st, dev); | |
258 | if (!cdev) { | |
259 | return; | |
260 | } | |
261 | ||
262 | cdev->cpu = CPU(dev); | |
d2238cb6 IM |
263 | if (dev->hotplugged) { |
264 | cdev->is_inserting = true; | |
265 | acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); | |
266 | } | |
5e1b5d93 IM |
267 | } |
268 | ||
8872c25a IM |
269 | void acpi_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, |
270 | CPUHotplugState *cpu_st, | |
271 | DeviceState *dev, Error **errp) | |
272 | { | |
273 | AcpiCpuStatus *cdev; | |
274 | ||
275 | cdev = get_cpu_status(cpu_st, dev); | |
276 | if (!cdev) { | |
277 | return; | |
278 | } | |
279 | ||
280 | cdev->is_removing = true; | |
281 | acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); | |
282 | } | |
283 | ||
284 | void acpi_cpu_unplug_cb(CPUHotplugState *cpu_st, | |
285 | DeviceState *dev, Error **errp) | |
286 | { | |
287 | AcpiCpuStatus *cdev; | |
288 | ||
289 | cdev = get_cpu_status(cpu_st, dev); | |
290 | if (!cdev) { | |
291 | return; | |
292 | } | |
293 | ||
294 | cdev->cpu = NULL; | |
295 | } | |
296 | ||
d2238cb6 IM |
297 | static const VMStateDescription vmstate_cpuhp_sts = { |
298 | .name = "CPU hotplug device state", | |
299 | .version_id = 1, | |
300 | .minimum_version_id = 1, | |
301 | .minimum_version_id_old = 1, | |
302 | .fields = (VMStateField[]) { | |
303 | VMSTATE_BOOL(is_inserting, AcpiCpuStatus), | |
8872c25a | 304 | VMSTATE_BOOL(is_removing, AcpiCpuStatus), |
76623d00 IM |
305 | VMSTATE_UINT32(ost_event, AcpiCpuStatus), |
306 | VMSTATE_UINT32(ost_status, AcpiCpuStatus), | |
d2238cb6 IM |
307 | VMSTATE_END_OF_LIST() |
308 | } | |
309 | }; | |
310 | ||
5e1b5d93 IM |
311 | const VMStateDescription vmstate_cpu_hotplug = { |
312 | .name = "CPU hotplug state", | |
313 | .version_id = 1, | |
314 | .minimum_version_id = 1, | |
315 | .minimum_version_id_old = 1, | |
316 | .fields = (VMStateField[]) { | |
317 | VMSTATE_UINT32(selector, CPUHotplugState), | |
d2238cb6 IM |
318 | VMSTATE_UINT8(command, CPUHotplugState), |
319 | VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, CPUHotplugState, dev_count, | |
320 | vmstate_cpuhp_sts, AcpiCpuStatus), | |
5e1b5d93 IM |
321 | VMSTATE_END_OF_LIST() |
322 | } | |
323 | }; | |
324 | ||
325 | #define CPU_NAME_FMT "C%.03X" | |
326 | #define CPUHP_RES_DEVICE "PRES" | |
327 | #define CPU_LOCK "CPLK" | |
328 | #define CPU_STS_METHOD "CSTA" | |
d2238cb6 IM |
329 | #define CPU_SCAN_METHOD "CSCN" |
330 | #define CPU_NOTIFY_METHOD "CTFY" | |
8872c25a | 331 | #define CPU_EJECT_METHOD "CEJ0" |
76623d00 | 332 | #define CPU_OST_METHOD "COST" |
9cc5a90b | 333 | #define CPU_ADDED_LIST "CNEW" |
5e1b5d93 IM |
334 | |
335 | #define CPU_ENABLED "CPEN" | |
336 | #define CPU_SELECTOR "CSEL" | |
d2238cb6 IM |
337 | #define CPU_COMMAND "CCMD" |
338 | #define CPU_DATA "CDAT" | |
339 | #define CPU_INSERT_EVENT "CINS" | |
8872c25a IM |
340 | #define CPU_REMOVE_EVENT "CRMV" |
341 | #define CPU_EJECT_EVENT "CEJ0" | |
69dea9d6 | 342 | #define CPU_FW_EJECT_EVENT "CEJF" |
5e1b5d93 IM |
343 | |
344 | void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts, | |
345 | hwaddr io_base, | |
d2238cb6 IM |
346 | const char *res_root, |
347 | const char *event_handler_method) | |
5e1b5d93 IM |
348 | { |
349 | Aml *ifctx; | |
350 | Aml *field; | |
351 | Aml *method; | |
352 | Aml *cpu_ctrl_dev; | |
353 | Aml *cpus_dev; | |
354 | Aml *zero = aml_int(0); | |
355 | Aml *one = aml_int(1); | |
356 | Aml *sb_scope = aml_scope("_SB"); | |
357 | MachineClass *mc = MACHINE_GET_CLASS(machine); | |
80e5db30 | 358 | const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine); |
5e1b5d93 | 359 | char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root); |
d2238cb6 IM |
360 | Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, NULL); |
361 | AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); | |
362 | AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj); | |
5e1b5d93 IM |
363 | |
364 | cpu_ctrl_dev = aml_device("%s", cphp_res_path); | |
365 | { | |
366 | Aml *crs; | |
367 | ||
368 | aml_append(cpu_ctrl_dev, | |
369 | aml_name_decl("_HID", aml_eisaid("PNP0A06"))); | |
370 | aml_append(cpu_ctrl_dev, | |
371 | aml_name_decl("_UID", aml_string("CPU Hotplug resources"))); | |
372 | aml_append(cpu_ctrl_dev, aml_mutex(CPU_LOCK, 0)); | |
373 | ||
374 | crs = aml_resource_template(); | |
375 | aml_append(crs, aml_io(AML_DECODE16, io_base, io_base, 1, | |
376 | ACPI_CPU_HOTPLUG_REG_LEN)); | |
377 | aml_append(cpu_ctrl_dev, aml_name_decl("_CRS", crs)); | |
378 | ||
379 | /* declare CPU hotplug MMIO region with related access fields */ | |
380 | aml_append(cpu_ctrl_dev, | |
381 | aml_operation_region("PRST", AML_SYSTEM_IO, aml_int(io_base), | |
382 | ACPI_CPU_HOTPLUG_REG_LEN)); | |
383 | ||
384 | field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, | |
385 | AML_WRITE_AS_ZEROS); | |
386 | aml_append(field, aml_reserved_field(ACPI_CPU_FLAGS_OFFSET_RW * 8)); | |
387 | /* 1 if enabled, read only */ | |
388 | aml_append(field, aml_named_field(CPU_ENABLED, 1)); | |
d2238cb6 IM |
389 | /* (read) 1 if has a insert event. (write) 1 to clear event */ |
390 | aml_append(field, aml_named_field(CPU_INSERT_EVENT, 1)); | |
8872c25a IM |
391 | /* (read) 1 if has a remove event. (write) 1 to clear event */ |
392 | aml_append(field, aml_named_field(CPU_REMOVE_EVENT, 1)); | |
393 | /* initiates device eject, write only */ | |
394 | aml_append(field, aml_named_field(CPU_EJECT_EVENT, 1)); | |
69dea9d6 IM |
395 | /* tell firmware to do device eject, write only */ |
396 | aml_append(field, aml_named_field(CPU_FW_EJECT_EVENT, 1)); | |
397 | aml_append(field, aml_reserved_field(3)); | |
d2238cb6 | 398 | aml_append(field, aml_named_field(CPU_COMMAND, 8)); |
5e1b5d93 IM |
399 | aml_append(cpu_ctrl_dev, field); |
400 | ||
401 | field = aml_field("PRST", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE); | |
402 | /* CPU selector, write only */ | |
403 | aml_append(field, aml_named_field(CPU_SELECTOR, 32)); | |
d2238cb6 IM |
404 | /* flags + cmd + 2byte align */ |
405 | aml_append(field, aml_reserved_field(4 * 8)); | |
406 | aml_append(field, aml_named_field(CPU_DATA, 32)); | |
5e1b5d93 IM |
407 | aml_append(cpu_ctrl_dev, field); |
408 | ||
679dd1a9 IM |
409 | if (opts.has_legacy_cphp) { |
410 | method = aml_method("_INI", 0, AML_SERIALIZED); | |
411 | /* switch off legacy CPU hotplug HW and use new one, | |
412 | * on reboot system is in new mode and writing 0 | |
413 | * in CPU_SELECTOR selects BSP, which is NOP at | |
414 | * the time _INI is called */ | |
415 | aml_append(method, aml_store(zero, aml_name(CPU_SELECTOR))); | |
416 | aml_append(cpu_ctrl_dev, method); | |
417 | } | |
5e1b5d93 IM |
418 | } |
419 | aml_append(sb_scope, cpu_ctrl_dev); | |
420 | ||
421 | cpus_dev = aml_device("\\_SB.CPUS"); | |
422 | { | |
423 | int i; | |
424 | Aml *ctrl_lock = aml_name("%s.%s", cphp_res_path, CPU_LOCK); | |
425 | Aml *cpu_selector = aml_name("%s.%s", cphp_res_path, CPU_SELECTOR); | |
426 | Aml *is_enabled = aml_name("%s.%s", cphp_res_path, CPU_ENABLED); | |
d2238cb6 IM |
427 | Aml *cpu_cmd = aml_name("%s.%s", cphp_res_path, CPU_COMMAND); |
428 | Aml *cpu_data = aml_name("%s.%s", cphp_res_path, CPU_DATA); | |
429 | Aml *ins_evt = aml_name("%s.%s", cphp_res_path, CPU_INSERT_EVENT); | |
8872c25a IM |
430 | Aml *rm_evt = aml_name("%s.%s", cphp_res_path, CPU_REMOVE_EVENT); |
431 | Aml *ej_evt = aml_name("%s.%s", cphp_res_path, CPU_EJECT_EVENT); | |
69dea9d6 | 432 | Aml *fw_ej_evt = aml_name("%s.%s", cphp_res_path, CPU_FW_EJECT_EVENT); |
5e1b5d93 IM |
433 | |
434 | aml_append(cpus_dev, aml_name_decl("_HID", aml_string("ACPI0010"))); | |
435 | aml_append(cpus_dev, aml_name_decl("_CID", aml_eisaid("PNP0A05"))); | |
436 | ||
d2238cb6 IM |
437 | method = aml_method(CPU_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); |
438 | for (i = 0; i < arch_ids->len; i++) { | |
439 | Aml *cpu = aml_name(CPU_NAME_FMT, i); | |
440 | Aml *uid = aml_arg(0); | |
441 | Aml *event = aml_arg(1); | |
442 | ||
443 | ifctx = aml_if(aml_equal(uid, aml_int(i))); | |
444 | { | |
445 | aml_append(ifctx, aml_notify(cpu, event)); | |
446 | } | |
447 | aml_append(method, ifctx); | |
448 | } | |
449 | aml_append(cpus_dev, method); | |
450 | ||
5e1b5d93 IM |
451 | method = aml_method(CPU_STS_METHOD, 1, AML_SERIALIZED); |
452 | { | |
453 | Aml *idx = aml_arg(0); | |
454 | Aml *sta = aml_local(0); | |
455 | ||
456 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); | |
457 | aml_append(method, aml_store(idx, cpu_selector)); | |
458 | aml_append(method, aml_store(zero, sta)); | |
459 | ifctx = aml_if(aml_equal(is_enabled, one)); | |
460 | { | |
461 | aml_append(ifctx, aml_store(aml_int(0xF), sta)); | |
462 | } | |
463 | aml_append(method, ifctx); | |
464 | aml_append(method, aml_release(ctrl_lock)); | |
465 | aml_append(method, aml_return(sta)); | |
466 | } | |
467 | aml_append(cpus_dev, method); | |
468 | ||
8872c25a IM |
469 | method = aml_method(CPU_EJECT_METHOD, 1, AML_SERIALIZED); |
470 | { | |
471 | Aml *idx = aml_arg(0); | |
472 | ||
473 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); | |
474 | aml_append(method, aml_store(idx, cpu_selector)); | |
69dea9d6 IM |
475 | if (opts.fw_unplugs_cpu) { |
476 | aml_append(method, aml_store(one, fw_ej_evt)); | |
477 | aml_append(method, aml_store(aml_int(OVMF_CPUHP_SMI_CMD), | |
478 | aml_name("%s", opts.smi_path))); | |
479 | } else { | |
480 | aml_append(method, aml_store(one, ej_evt)); | |
481 | } | |
8872c25a IM |
482 | aml_append(method, aml_release(ctrl_lock)); |
483 | } | |
484 | aml_append(cpus_dev, method); | |
485 | ||
d2238cb6 IM |
486 | method = aml_method(CPU_SCAN_METHOD, 0, AML_SERIALIZED); |
487 | { | |
9cc5a90b | 488 | const uint8_t max_cpus_per_pass = 255; |
8872c25a | 489 | Aml *else_ctx; |
9cc5a90b | 490 | Aml *while_ctx, *while_ctx2; |
d2238cb6 IM |
491 | Aml *has_event = aml_local(0); |
492 | Aml *dev_chk = aml_int(1); | |
8872c25a | 493 | Aml *eject_req = aml_int(3); |
d2238cb6 | 494 | Aml *next_cpu_cmd = aml_int(CPHP_GET_NEXT_CPU_WITH_EVENT_CMD); |
9cc5a90b IM |
495 | Aml *num_added_cpus = aml_local(1); |
496 | Aml *cpu_idx = aml_local(2); | |
497 | Aml *uid = aml_local(3); | |
498 | Aml *has_job = aml_local(4); | |
499 | Aml *new_cpus = aml_name(CPU_ADDED_LIST); | |
d2238cb6 IM |
500 | |
501 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); | |
9cc5a90b IM |
502 | |
503 | /* | |
504 | * Windows versions newer than XP (including Windows 10/Windows | |
505 | * Server 2019), do support* VarPackageOp but, it is cripled to hold | |
506 | * the same elements number as old PackageOp. | |
507 | * For compatibility with Windows XP (so it won't crash) use ACPI1.0 | |
508 | * PackageOp which can hold max 255 elements. | |
509 | * | |
510 | * use named package as old Windows don't support it in local var | |
511 | */ | |
512 | aml_append(method, aml_name_decl(CPU_ADDED_LIST, | |
513 | aml_package(max_cpus_per_pass))); | |
514 | ||
515 | aml_append(method, aml_store(zero, uid)); | |
516 | aml_append(method, aml_store(one, has_job)); | |
517 | /* | |
518 | * CPU_ADDED_LIST can hold limited number of elements, outer loop | |
519 | * allows to process CPUs in batches which let us to handle more | |
520 | * CPUs than CPU_ADDED_LIST can hold. | |
521 | */ | |
522 | while_ctx2 = aml_while(aml_equal(has_job, one)); | |
d2238cb6 | 523 | { |
9cc5a90b IM |
524 | aml_append(while_ctx2, aml_store(zero, has_job)); |
525 | ||
526 | aml_append(while_ctx2, aml_store(one, has_event)); | |
527 | aml_append(while_ctx2, aml_store(zero, num_added_cpus)); | |
528 | ||
529 | /* | |
530 | * Scan CPUs, till there are CPUs with events or | |
531 | * CPU_ADDED_LIST capacity is exhausted | |
532 | */ | |
533 | while_ctx = aml_while(aml_land(aml_equal(has_event, one), | |
534 | aml_lless(uid, aml_int(arch_ids->len)))); | |
535 | { | |
536 | /* | |
537 | * clear loop exit condition, ins_evt/rm_evt checks will | |
538 | * set it to 1 while next_cpu_cmd returns a CPU with events | |
539 | */ | |
540 | aml_append(while_ctx, aml_store(zero, has_event)); | |
541 | ||
542 | aml_append(while_ctx, aml_store(uid, cpu_selector)); | |
543 | aml_append(while_ctx, aml_store(next_cpu_cmd, cpu_cmd)); | |
544 | ||
545 | /* | |
546 | * wrap around case, scan is complete, exit loop. | |
547 | * It happens since events are not cleared in scan loop, | |
548 | * so next_cpu_cmd continues to find already processed CPUs | |
549 | */ | |
550 | ifctx = aml_if(aml_lless(cpu_data, uid)); | |
551 | { | |
552 | aml_append(ifctx, aml_break()); | |
553 | } | |
554 | aml_append(while_ctx, ifctx); | |
555 | ||
556 | /* | |
557 | * if CPU_ADDED_LIST is full, exit inner loop and process | |
558 | * collected CPUs | |
559 | */ | |
560 | ifctx = aml_if( | |
561 | aml_equal(num_added_cpus, aml_int(max_cpus_per_pass))); | |
562 | { | |
563 | aml_append(ifctx, aml_store(one, has_job)); | |
564 | aml_append(ifctx, aml_break()); | |
565 | } | |
566 | aml_append(while_ctx, ifctx); | |
567 | ||
568 | aml_append(while_ctx, aml_store(cpu_data, uid)); | |
569 | ifctx = aml_if(aml_equal(ins_evt, one)); | |
570 | { | |
571 | /* cache added CPUs to Notify/Wakeup later */ | |
572 | aml_append(ifctx, aml_store(uid, | |
573 | aml_index(new_cpus, num_added_cpus))); | |
574 | aml_append(ifctx, aml_increment(num_added_cpus)); | |
575 | aml_append(ifctx, aml_store(one, has_event)); | |
576 | } | |
577 | aml_append(while_ctx, ifctx); | |
578 | else_ctx = aml_else(); | |
579 | ifctx = aml_if(aml_equal(rm_evt, one)); | |
580 | { | |
581 | aml_append(ifctx, | |
582 | aml_call2(CPU_NOTIFY_METHOD, uid, eject_req)); | |
583 | aml_append(ifctx, aml_store(one, rm_evt)); | |
584 | aml_append(ifctx, aml_store(one, has_event)); | |
585 | } | |
586 | aml_append(else_ctx, ifctx); | |
587 | aml_append(while_ctx, else_ctx); | |
588 | aml_append(while_ctx, aml_increment(uid)); | |
589 | } | |
590 | aml_append(while_ctx2, while_ctx); | |
591 | ||
592 | /* | |
593 | * in case FW negotiated ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT, | |
594 | * make upcall to FW, so it can pull in new CPUs before | |
595 | * OS is notified and wakes them up | |
596 | */ | |
597 | if (opts.smi_path) { | |
598 | ifctx = aml_if(aml_lgreater(num_added_cpus, zero)); | |
599 | { | |
600 | aml_append(ifctx, aml_store(aml_int(OVMF_CPUHP_SMI_CMD), | |
601 | aml_name("%s", opts.smi_path))); | |
602 | } | |
603 | aml_append(while_ctx2, ifctx); | |
604 | } | |
605 | ||
606 | /* Notify OSPM about new CPUs and clear insert events */ | |
607 | aml_append(while_ctx2, aml_store(zero, cpu_idx)); | |
608 | while_ctx = aml_while(aml_lless(cpu_idx, num_added_cpus)); | |
609 | { | |
610 | aml_append(while_ctx, | |
611 | aml_store(aml_derefof(aml_index(new_cpus, cpu_idx)), | |
612 | uid)); | |
613 | aml_append(while_ctx, | |
614 | aml_call2(CPU_NOTIFY_METHOD, uid, dev_chk)); | |
615 | aml_append(while_ctx, aml_store(uid, aml_debug())); | |
616 | aml_append(while_ctx, aml_store(uid, cpu_selector)); | |
617 | aml_append(while_ctx, aml_store(one, ins_evt)); | |
618 | aml_append(while_ctx, aml_increment(cpu_idx)); | |
619 | } | |
620 | aml_append(while_ctx2, while_ctx); | |
621 | /* | |
622 | * If another batch is needed, then it will resume scanning | |
623 | * exactly at -- and not after -- the last CPU that's currently | |
624 | * in CPU_ADDED_LIST. In other words, the last CPU in | |
625 | * CPU_ADDED_LIST is going to be re-checked. That's OK: we've | |
626 | * just cleared the insert event for *all* CPUs in | |
627 | * CPU_ADDED_LIST, including the last one. So the scan will | |
628 | * simply seek past it. | |
629 | */ | |
d2238cb6 | 630 | } |
9cc5a90b | 631 | aml_append(method, while_ctx2); |
d2238cb6 IM |
632 | aml_append(method, aml_release(ctrl_lock)); |
633 | } | |
634 | aml_append(cpus_dev, method); | |
635 | ||
76623d00 IM |
636 | method = aml_method(CPU_OST_METHOD, 4, AML_SERIALIZED); |
637 | { | |
638 | Aml *uid = aml_arg(0); | |
639 | Aml *ev_cmd = aml_int(CPHP_OST_EVENT_CMD); | |
640 | Aml *st_cmd = aml_int(CPHP_OST_STATUS_CMD); | |
641 | ||
642 | aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); | |
643 | aml_append(method, aml_store(uid, cpu_selector)); | |
644 | aml_append(method, aml_store(ev_cmd, cpu_cmd)); | |
645 | aml_append(method, aml_store(aml_arg(1), cpu_data)); | |
646 | aml_append(method, aml_store(st_cmd, cpu_cmd)); | |
647 | aml_append(method, aml_store(aml_arg(2), cpu_data)); | |
648 | aml_append(method, aml_release(ctrl_lock)); | |
649 | } | |
650 | aml_append(cpus_dev, method); | |
651 | ||
5e1b5d93 IM |
652 | /* build Processor object for each processor */ |
653 | for (i = 0; i < arch_ids->len; i++) { | |
654 | Aml *dev; | |
655 | Aml *uid = aml_int(i); | |
d2238cb6 | 656 | GArray *madt_buf = g_array_new(0, 1, 1); |
5e1b5d93 IM |
657 | int arch_id = arch_ids->cpus[i].arch_id; |
658 | ||
89cb0c04 | 659 | if (opts.acpi_1_compatible && arch_id < 255) { |
5e1b5d93 IM |
660 | dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i); |
661 | } else { | |
662 | dev = aml_device(CPU_NAME_FMT, i); | |
663 | aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007"))); | |
664 | aml_append(dev, aml_name_decl("_UID", uid)); | |
665 | } | |
666 | ||
667 | method = aml_method("_STA", 0, AML_SERIALIZED); | |
668 | aml_append(method, aml_return(aml_call1(CPU_STS_METHOD, uid))); | |
669 | aml_append(dev, method); | |
670 | ||
d2238cb6 IM |
671 | /* build _MAT object */ |
672 | assert(adevc && adevc->madt_cpu); | |
673 | adevc->madt_cpu(adev, i, arch_ids, madt_buf); | |
674 | switch (madt_buf->data[0]) { | |
675 | case ACPI_APIC_PROCESSOR: { | |
676 | AcpiMadtProcessorApic *apic = (void *)madt_buf->data; | |
677 | apic->flags = cpu_to_le32(1); | |
678 | break; | |
679 | } | |
e2c95939 IM |
680 | case ACPI_APIC_LOCAL_X2APIC: { |
681 | AcpiMadtProcessorX2Apic *apic = (void *)madt_buf->data; | |
682 | apic->flags = cpu_to_le32(1); | |
683 | break; | |
684 | } | |
d2238cb6 IM |
685 | default: |
686 | assert(0); | |
687 | } | |
688 | aml_append(dev, aml_name_decl("_MAT", | |
689 | aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data))); | |
690 | g_array_free(madt_buf, true); | |
691 | ||
c2d2a81b IM |
692 | if (CPU(arch_ids->cpus[i].cpu) != first_cpu) { |
693 | method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); | |
694 | aml_append(method, aml_call1(CPU_EJECT_METHOD, uid)); | |
695 | aml_append(dev, method); | |
696 | } | |
8872c25a | 697 | |
76623d00 IM |
698 | method = aml_method("_OST", 3, AML_SERIALIZED); |
699 | aml_append(method, | |
700 | aml_call4(CPU_OST_METHOD, uid, aml_arg(0), | |
701 | aml_arg(1), aml_arg(2)) | |
702 | ); | |
703 | aml_append(dev, method); | |
27111931 IM |
704 | |
705 | /* Linux guests discard SRAT info for non-present CPUs | |
706 | * as a result _PXM is required for all CPUs which might | |
707 | * be hot-plugged. For simplicity, add it for all CPUs. | |
708 | */ | |
ea265072 IM |
709 | if (arch_ids->cpus[i].props.has_node_id) { |
710 | aml_append(dev, aml_name_decl("_PXM", | |
711 | aml_int(arch_ids->cpus[i].props.node_id))); | |
27111931 IM |
712 | } |
713 | ||
5e1b5d93 IM |
714 | aml_append(cpus_dev, dev); |
715 | } | |
716 | } | |
717 | aml_append(sb_scope, cpus_dev); | |
718 | aml_append(table, sb_scope); | |
719 | ||
d2238cb6 IM |
720 | method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); |
721 | aml_append(method, aml_call0("\\_SB.CPUS." CPU_SCAN_METHOD)); | |
722 | aml_append(table, method); | |
723 | ||
5e1b5d93 | 724 | g_free(cphp_res_path); |
5e1b5d93 | 725 | } |