Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
[qemu.git] / hw / acpi / memory_hotplug.c
1 #include "qemu/osdep.h"
2 #include "hw/acpi/memory_hotplug.h"
3 #include "hw/acpi/pc-hotplug.h"
4 #include "hw/mem/pc-dimm.h"
5 #include "hw/qdev-core.h"
6 #include "migration/vmstate.h"
7 #include "trace.h"
8 #include "qapi/error.h"
9 #include "qapi/qapi-events-acpi.h"
10 #include "qapi/qapi-events-machine.h"
11 #include "qapi/qapi-events-qdev.h"
12
13 #define MEMORY_SLOTS_NUMBER "MDNR"
14 #define MEMORY_HOTPLUG_IO_REGION "HPMR"
15 #define MEMORY_SLOT_ADDR_LOW "MRBL"
16 #define MEMORY_SLOT_ADDR_HIGH "MRBH"
17 #define MEMORY_SLOT_SIZE_LOW "MRLL"
18 #define MEMORY_SLOT_SIZE_HIGH "MRLH"
19 #define MEMORY_SLOT_PROXIMITY "MPX"
20 #define MEMORY_SLOT_ENABLED "MES"
21 #define MEMORY_SLOT_INSERT_EVENT "MINS"
22 #define MEMORY_SLOT_REMOVE_EVENT "MRMV"
23 #define MEMORY_SLOT_EJECT "MEJ"
24 #define MEMORY_SLOT_SLECTOR "MSEL"
25 #define MEMORY_SLOT_OST_EVENT "MOEV"
26 #define MEMORY_SLOT_OST_STATUS "MOSC"
27 #define MEMORY_SLOT_LOCK "MLCK"
28 #define MEMORY_SLOT_STATUS_METHOD "MRST"
29 #define MEMORY_SLOT_CRS_METHOD "MCRS"
30 #define MEMORY_SLOT_OST_METHOD "MOST"
31 #define MEMORY_SLOT_PROXIMITY_METHOD "MPXM"
32 #define MEMORY_SLOT_EJECT_METHOD "MEJ0"
33 #define MEMORY_SLOT_NOTIFY_METHOD "MTFY"
34 #define MEMORY_HOTPLUG_DEVICE "MHPD"
35
36 static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev)
37 {
38 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1);
39
40 info->slot_type = ACPI_SLOT_TYPE_DIMM;
41 info->slot = g_strdup_printf("%d", slot);
42 info->source = mdev->ost_event;
43 info->status = mdev->ost_status;
44 if (mdev->dimm) {
45 DeviceState *dev = DEVICE(mdev->dimm);
46 if (dev->id) {
47 info->device = g_strdup(dev->id);
48 info->has_device = true;
49 }
50 }
51 return info;
52 }
53
54 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list)
55 {
56 ACPIOSTInfoList ***tail = list;
57 int i;
58
59 for (i = 0; i < mem_st->dev_count; i++) {
60 QAPI_LIST_APPEND(*tail,
61 acpi_memory_device_status(i, &mem_st->devs[i]));
62 }
63 }
64
65 static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr,
66 unsigned int size)
67 {
68 uint32_t val = 0;
69 MemHotplugState *mem_st = opaque;
70 MemStatus *mdev;
71 Object *o;
72
73 if (mem_st->selector >= mem_st->dev_count) {
74 trace_mhp_acpi_invalid_slot_selected(mem_st->selector);
75 return 0;
76 }
77
78 mdev = &mem_st->devs[mem_st->selector];
79 o = OBJECT(mdev->dimm);
80 switch (addr) {
81 case 0x0: /* Lo part of phys address where DIMM is mapped */
82 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0;
83 trace_mhp_acpi_read_addr_lo(mem_st->selector, val);
84 break;
85 case 0x4: /* Hi part of phys address where DIMM is mapped */
86 val =
87 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0;
88 trace_mhp_acpi_read_addr_hi(mem_st->selector, val);
89 break;
90 case 0x8: /* Lo part of DIMM size */
91 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0;
92 trace_mhp_acpi_read_size_lo(mem_st->selector, val);
93 break;
94 case 0xc: /* Hi part of DIMM size */
95 val =
96 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0;
97 trace_mhp_acpi_read_size_hi(mem_st->selector, val);
98 break;
99 case 0x10: /* node proximity for _PXM method */
100 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0;
101 trace_mhp_acpi_read_pxm(mem_st->selector, val);
102 break;
103 case 0x14: /* pack and return is_* fields */
104 val |= mdev->is_enabled ? 1 : 0;
105 val |= mdev->is_inserting ? 2 : 0;
106 val |= mdev->is_removing ? 4 : 0;
107 trace_mhp_acpi_read_flags(mem_st->selector, val);
108 break;
109 default:
110 val = ~0;
111 break;
112 }
113 return val;
114 }
115
116 static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
117 unsigned int size)
118 {
119 MemHotplugState *mem_st = opaque;
120 MemStatus *mdev;
121 ACPIOSTInfo *info;
122 DeviceState *dev = NULL;
123 HotplugHandler *hotplug_ctrl = NULL;
124 Error *local_err = NULL;
125
126 if (!mem_st->dev_count) {
127 return;
128 }
129
130 if (addr) {
131 if (mem_st->selector >= mem_st->dev_count) {
132 trace_mhp_acpi_invalid_slot_selected(mem_st->selector);
133 return;
134 }
135 }
136
137 switch (addr) {
138 case 0x0: /* DIMM slot selector */
139 mem_st->selector = data;
140 trace_mhp_acpi_write_slot(mem_st->selector);
141 break;
142 case 0x4: /* _OST event */
143 mdev = &mem_st->devs[mem_st->selector];
144 if (data == 1) {
145 /* TODO: handle device insert OST event */
146 } else if (data == 3) {
147 /* TODO: handle device remove OST event */
148 }
149 mdev->ost_event = data;
150 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event);
151 break;
152 case 0x8: /* _OST status */
153 mdev = &mem_st->devs[mem_st->selector];
154 mdev->ost_status = data;
155 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status);
156 /* TODO: implement memory removal on guest signal */
157
158 info = acpi_memory_device_status(mem_st->selector, mdev);
159 qapi_event_send_acpi_device_ost(info);
160 qapi_free_ACPIOSTInfo(info);
161 break;
162 case 0x14: /* set is_* fields */
163 mdev = &mem_st->devs[mem_st->selector];
164 if (data & 2) { /* clear insert event */
165 mdev->is_inserting = false;
166 trace_mhp_acpi_clear_insert_evt(mem_st->selector);
167 } else if (data & 4) {
168 mdev->is_removing = false;
169 trace_mhp_acpi_clear_remove_evt(mem_st->selector);
170 } else if (data & 8) {
171 if (!mdev->is_enabled) {
172 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector);
173 break;
174 }
175
176 dev = DEVICE(mdev->dimm);
177 hotplug_ctrl = qdev_get_hotplug_handler(dev);
178 /* call pc-dimm unplug cb */
179 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
180 if (local_err) {
181 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector);
182
183 /*
184 * Send both MEM_UNPLUG_ERROR and DEVICE_UNPLUG_GUEST_ERROR
185 * while the deprecation of MEM_UNPLUG_ERROR is
186 * pending.
187 */
188 qapi_event_send_mem_unplug_error(dev->id ? : "",
189 error_get_pretty(local_err));
190 qapi_event_send_device_unplug_guest_error(!!dev->id, dev->id,
191 dev->canonical_path);
192 error_free(local_err);
193 break;
194 }
195 object_unparent(OBJECT(dev));
196 trace_mhp_acpi_pc_dimm_deleted(mem_st->selector);
197 }
198 break;
199 default:
200 break;
201 }
202
203 }
204 static const MemoryRegionOps acpi_memory_hotplug_ops = {
205 .read = acpi_memory_hotplug_read,
206 .write = acpi_memory_hotplug_write,
207 .endianness = DEVICE_LITTLE_ENDIAN,
208 .valid = {
209 .min_access_size = 1,
210 .max_access_size = 4,
211 },
212 };
213
214 void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
215 MemHotplugState *state, hwaddr io_base)
216 {
217 MachineState *machine = MACHINE(qdev_get_machine());
218
219 state->dev_count = machine->ram_slots;
220 if (!state->dev_count) {
221 return;
222 }
223
224 state->devs = g_malloc0(sizeof(*state->devs) * state->dev_count);
225 memory_region_init_io(&state->io, owner, &acpi_memory_hotplug_ops, state,
226 "acpi-mem-hotplug", MEMORY_HOTPLUG_IO_LEN);
227 memory_region_add_subregion(as, io_base, &state->io);
228 }
229
230 /**
231 * acpi_memory_slot_status:
232 * @mem_st: memory hotplug state
233 * @dev: device
234 * @errp: set in case of an error
235 *
236 * Obtain a single memory slot status.
237 *
238 * This function will be called by memory unplug request cb and unplug cb.
239 */
240 static MemStatus *
241 acpi_memory_slot_status(MemHotplugState *mem_st,
242 DeviceState *dev, Error **errp)
243 {
244 Error *local_err = NULL;
245 int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP,
246 &local_err);
247
248 if (local_err) {
249 error_propagate(errp, local_err);
250 return NULL;
251 }
252
253 if (slot >= mem_st->dev_count) {
254 char *dev_path = object_get_canonical_path(OBJECT(dev));
255 error_setg(errp, "acpi_memory_slot_status: "
256 "device [%s] returned invalid memory slot[%d]",
257 dev_path, slot);
258 g_free(dev_path);
259 return NULL;
260 }
261
262 return &mem_st->devs[slot];
263 }
264
265 void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st,
266 DeviceState *dev, Error **errp)
267 {
268 MemStatus *mdev;
269 DeviceClass *dc = DEVICE_GET_CLASS(dev);
270
271 if (!dc->hotpluggable) {
272 return;
273 }
274
275 mdev = acpi_memory_slot_status(mem_st, dev, errp);
276 if (!mdev) {
277 return;
278 }
279
280 mdev->dimm = dev;
281 mdev->is_enabled = true;
282 if (dev->hotplugged) {
283 mdev->is_inserting = true;
284 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
285 }
286 }
287
288 void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev,
289 MemHotplugState *mem_st,
290 DeviceState *dev, Error **errp)
291 {
292 MemStatus *mdev;
293
294 mdev = acpi_memory_slot_status(mem_st, dev, errp);
295 if (!mdev) {
296 return;
297 }
298
299 mdev->is_removing = true;
300 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
301 }
302
303 void acpi_memory_unplug_cb(MemHotplugState *mem_st,
304 DeviceState *dev, Error **errp)
305 {
306 MemStatus *mdev;
307
308 mdev = acpi_memory_slot_status(mem_st, dev, errp);
309 if (!mdev) {
310 return;
311 }
312
313 mdev->is_enabled = false;
314 mdev->dimm = NULL;
315 }
316
317 static const VMStateDescription vmstate_memhp_sts = {
318 .name = "memory hotplug device state",
319 .version_id = 1,
320 .minimum_version_id = 1,
321 .minimum_version_id_old = 1,
322 .fields = (VMStateField[]) {
323 VMSTATE_BOOL(is_enabled, MemStatus),
324 VMSTATE_BOOL(is_inserting, MemStatus),
325 VMSTATE_UINT32(ost_event, MemStatus),
326 VMSTATE_UINT32(ost_status, MemStatus),
327 VMSTATE_END_OF_LIST()
328 }
329 };
330
331 const VMStateDescription vmstate_memory_hotplug = {
332 .name = "memory hotplug state",
333 .version_id = 1,
334 .minimum_version_id = 1,
335 .minimum_version_id_old = 1,
336 .fields = (VMStateField[]) {
337 VMSTATE_UINT32(selector, MemHotplugState),
338 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count,
339 vmstate_memhp_sts, MemStatus),
340 VMSTATE_END_OF_LIST()
341 }
342 };
343
344 void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem,
345 const char *res_root,
346 const char *event_handler_method,
347 AmlRegionSpace rs, hwaddr memhp_io_base)
348 {
349 int i;
350 Aml *ifctx;
351 Aml *method;
352 Aml *dev_container;
353 Aml *mem_ctrl_dev;
354 char *mhp_res_path;
355
356 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root);
357 mem_ctrl_dev = aml_device("%s", mhp_res_path);
358 {
359 Aml *crs;
360
361 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06")));
362 aml_append(mem_ctrl_dev,
363 aml_name_decl("_UID", aml_string("Memory hotplug resources")));
364
365 crs = aml_resource_template();
366 if (rs == AML_SYSTEM_IO) {
367 aml_append(crs,
368 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0,
369 MEMORY_HOTPLUG_IO_LEN)
370 );
371 } else {
372 aml_append(crs, aml_memory32_fixed(memhp_io_base,
373 MEMORY_HOTPLUG_IO_LEN, AML_READ_WRITE));
374 }
375 aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs));
376
377 aml_append(mem_ctrl_dev, aml_operation_region(
378 MEMORY_HOTPLUG_IO_REGION, rs,
379 aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN)
380 );
381
382 }
383 aml_append(table, mem_ctrl_dev);
384
385 dev_container = aml_device(MEMORY_DEVICES_CONTAINER);
386 {
387 Aml *field;
388 Aml *one = aml_int(1);
389 Aml *zero = aml_int(0);
390 Aml *ret_val = aml_local(0);
391 Aml *slot_arg0 = aml_arg(0);
392 Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER);
393 Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK);
394 Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR);
395 char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION,
396 mhp_res_path);
397
398 aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06")));
399 aml_append(dev_container,
400 aml_name_decl("_UID", aml_string("DIMM devices")));
401
402 assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
403 aml_append(dev_container,
404 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem))
405 );
406
407 field = aml_field(mmio_path, AML_DWORD_ACC,
408 AML_NOLOCK, AML_PRESERVE);
409 aml_append(field, /* read only */
410 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32));
411 aml_append(field, /* read only */
412 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32));
413 aml_append(field, /* read only */
414 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32));
415 aml_append(field, /* read only */
416 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32));
417 aml_append(field, /* read only */
418 aml_named_field(MEMORY_SLOT_PROXIMITY, 32));
419 aml_append(dev_container, field);
420
421 field = aml_field(mmio_path, AML_BYTE_ACC,
422 AML_NOLOCK, AML_WRITE_AS_ZEROS);
423 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
424 aml_append(field, /* 1 if enabled, read only */
425 aml_named_field(MEMORY_SLOT_ENABLED, 1));
426 aml_append(field,
427 /*(read) 1 if has a insert event. (write) 1 to clear event */
428 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1));
429 aml_append(field,
430 /* (read) 1 if has a remove event. (write) 1 to clear event */
431 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1));
432 aml_append(field,
433 /* initiates device eject, write only */
434 aml_named_field(MEMORY_SLOT_EJECT, 1));
435 aml_append(dev_container, field);
436
437 field = aml_field(mmio_path, AML_DWORD_ACC,
438 AML_NOLOCK, AML_PRESERVE);
439 aml_append(field, /* DIMM selector, write only */
440 aml_named_field(MEMORY_SLOT_SLECTOR, 32));
441 aml_append(field, /* _OST event code, write only */
442 aml_named_field(MEMORY_SLOT_OST_EVENT, 32));
443 aml_append(field, /* _OST status code, write only */
444 aml_named_field(MEMORY_SLOT_OST_STATUS, 32));
445 aml_append(dev_container, field);
446 g_free(mmio_path);
447
448 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
449 ifctx = aml_if(aml_equal(slots_nr, zero));
450 {
451 aml_append(ifctx, aml_return(zero));
452 }
453 aml_append(method, ifctx);
454 /* present, functioning, decoding, not shown in UI */
455 aml_append(method, aml_return(aml_int(0xB)));
456 aml_append(dev_container, method);
457
458 aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0));
459
460 method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED);
461 {
462 Aml *else_ctx;
463 Aml *while_ctx;
464 Aml *idx = aml_local(0);
465 Aml *eject_req = aml_int(3);
466 Aml *dev_chk = aml_int(1);
467
468 ifctx = aml_if(aml_equal(slots_nr, zero));
469 {
470 aml_append(ifctx, aml_return(zero));
471 }
472 aml_append(method, ifctx);
473
474 aml_append(method, aml_store(zero, idx));
475 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
476 /* build AML that:
477 * loops over all slots and Notifies DIMMs with
478 * Device Check or Eject Request notifications if
479 * slot has corresponding status bit set and clears
480 * slot status.
481 */
482 while_ctx = aml_while(aml_lless(idx, slots_nr));
483 {
484 Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT);
485 Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT);
486
487 aml_append(while_ctx, aml_store(idx, slot_selector));
488 ifctx = aml_if(aml_equal(ins_evt, one));
489 {
490 aml_append(ifctx,
491 aml_call2(MEMORY_SLOT_NOTIFY_METHOD,
492 idx, dev_chk));
493 aml_append(ifctx, aml_store(one, ins_evt));
494 }
495 aml_append(while_ctx, ifctx);
496
497 else_ctx = aml_else();
498 ifctx = aml_if(aml_equal(rm_evt, one));
499 {
500 aml_append(ifctx,
501 aml_call2(MEMORY_SLOT_NOTIFY_METHOD,
502 idx, eject_req));
503 aml_append(ifctx, aml_store(one, rm_evt));
504 }
505 aml_append(else_ctx, ifctx);
506 aml_append(while_ctx, else_ctx);
507
508 aml_append(while_ctx, aml_add(idx, one, idx));
509 }
510 aml_append(method, while_ctx);
511 aml_append(method, aml_release(ctrl_lock));
512 aml_append(method, aml_return(one));
513 }
514 aml_append(dev_container, method);
515
516 method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED);
517 {
518 Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED);
519
520 aml_append(method, aml_store(zero, ret_val));
521 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
522 aml_append(method,
523 aml_store(aml_to_integer(slot_arg0), slot_selector));
524
525 ifctx = aml_if(aml_equal(slot_enabled, one));
526 {
527 aml_append(ifctx, aml_store(aml_int(0xF), ret_val));
528 }
529 aml_append(method, ifctx);
530
531 aml_append(method, aml_release(ctrl_lock));
532 aml_append(method, aml_return(ret_val));
533 }
534 aml_append(dev_container, method);
535
536 method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED);
537 {
538 Aml *mr64 = aml_name("MR64");
539 Aml *mr32 = aml_name("MR32");
540 Aml *crs_tmpl = aml_resource_template();
541 Aml *minl = aml_name("MINL");
542 Aml *minh = aml_name("MINH");
543 Aml *maxl = aml_name("MAXL");
544 Aml *maxh = aml_name("MAXH");
545 Aml *lenl = aml_name("LENL");
546 Aml *lenh = aml_name("LENH");
547
548 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
549 aml_append(method, aml_store(aml_to_integer(slot_arg0),
550 slot_selector));
551
552 aml_append(crs_tmpl,
553 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
554 AML_CACHEABLE, AML_READ_WRITE,
555 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0,
556 0xFFFFFFFFFFFFFFFFULL));
557 aml_append(method, aml_name_decl("MR64", crs_tmpl));
558 aml_append(method,
559 aml_create_dword_field(mr64, aml_int(14), "MINL"));
560 aml_append(method,
561 aml_create_dword_field(mr64, aml_int(18), "MINH"));
562 aml_append(method,
563 aml_create_dword_field(mr64, aml_int(38), "LENL"));
564 aml_append(method,
565 aml_create_dword_field(mr64, aml_int(42), "LENH"));
566 aml_append(method,
567 aml_create_dword_field(mr64, aml_int(22), "MAXL"));
568 aml_append(method,
569 aml_create_dword_field(mr64, aml_int(26), "MAXH"));
570
571 aml_append(method,
572 aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh));
573 aml_append(method,
574 aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl));
575 aml_append(method,
576 aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh));
577 aml_append(method,
578 aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl));
579
580 /* 64-bit math: MAX = MIN + LEN - 1 */
581 aml_append(method, aml_add(minl, lenl, maxl));
582 aml_append(method, aml_add(minh, lenh, maxh));
583 ifctx = aml_if(aml_lless(maxl, minl));
584 {
585 aml_append(ifctx, aml_add(maxh, one, maxh));
586 }
587 aml_append(method, ifctx);
588 ifctx = aml_if(aml_lless(maxl, one));
589 {
590 aml_append(ifctx, aml_subtract(maxh, one, maxh));
591 }
592 aml_append(method, ifctx);
593 aml_append(method, aml_subtract(maxl, one, maxl));
594
595 /* return 32-bit _CRS if addr/size is in low mem */
596 /* TODO: remove it since all hotplugged DIMMs are in high mem */
597 ifctx = aml_if(aml_equal(maxh, zero));
598 {
599 crs_tmpl = aml_resource_template();
600 aml_append(crs_tmpl,
601 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
602 AML_MAX_FIXED, AML_CACHEABLE,
603 AML_READ_WRITE,
604 0, 0x0, 0xFFFFFFFE, 0,
605 0xFFFFFFFF));
606 aml_append(ifctx, aml_name_decl("MR32", crs_tmpl));
607 aml_append(ifctx,
608 aml_create_dword_field(mr32, aml_int(10), "MIN"));
609 aml_append(ifctx,
610 aml_create_dword_field(mr32, aml_int(14), "MAX"));
611 aml_append(ifctx,
612 aml_create_dword_field(mr32, aml_int(22), "LEN"));
613 aml_append(ifctx, aml_store(minl, aml_name("MIN")));
614 aml_append(ifctx, aml_store(maxl, aml_name("MAX")));
615 aml_append(ifctx, aml_store(lenl, aml_name("LEN")));
616
617 aml_append(ifctx, aml_release(ctrl_lock));
618 aml_append(ifctx, aml_return(mr32));
619 }
620 aml_append(method, ifctx);
621
622 aml_append(method, aml_release(ctrl_lock));
623 aml_append(method, aml_return(mr64));
624 }
625 aml_append(dev_container, method);
626
627 method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1,
628 AML_NOTSERIALIZED);
629 {
630 Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY);
631
632 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
633 aml_append(method, aml_store(aml_to_integer(slot_arg0),
634 slot_selector));
635 aml_append(method, aml_store(proximity, ret_val));
636 aml_append(method, aml_release(ctrl_lock));
637 aml_append(method, aml_return(ret_val));
638 }
639 aml_append(dev_container, method);
640
641 method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED);
642 {
643 Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT);
644 Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS);
645
646 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
647 aml_append(method, aml_store(aml_to_integer(slot_arg0),
648 slot_selector));
649 aml_append(method, aml_store(aml_arg(1), ost_evt));
650 aml_append(method, aml_store(aml_arg(2), ost_status));
651 aml_append(method, aml_release(ctrl_lock));
652 }
653 aml_append(dev_container, method);
654
655 method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED);
656 {
657 Aml *eject = aml_name(MEMORY_SLOT_EJECT);
658
659 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
660 aml_append(method, aml_store(aml_to_integer(slot_arg0),
661 slot_selector));
662 aml_append(method, aml_store(one, eject));
663 aml_append(method, aml_release(ctrl_lock));
664 }
665 aml_append(dev_container, method);
666
667 /* build memory devices */
668 for (i = 0; i < nr_mem; i++) {
669 Aml *dev;
670 const char *s;
671
672 dev = aml_device("MP%02X", i);
673 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i)));
674 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
675
676 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
677 s = MEMORY_SLOT_CRS_METHOD;
678 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
679 aml_append(dev, method);
680
681 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
682 s = MEMORY_SLOT_STATUS_METHOD;
683 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
684 aml_append(dev, method);
685
686 method = aml_method("_PXM", 0, AML_NOTSERIALIZED);
687 s = MEMORY_SLOT_PROXIMITY_METHOD;
688 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
689 aml_append(dev, method);
690
691 method = aml_method("_OST", 3, AML_NOTSERIALIZED);
692 s = MEMORY_SLOT_OST_METHOD;
693 aml_append(method,
694 aml_call4(s, aml_name("_UID"), aml_arg(0),
695 aml_arg(1), aml_arg(2)));
696 aml_append(dev, method);
697
698 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
699 s = MEMORY_SLOT_EJECT_METHOD;
700 aml_append(method,
701 aml_call2(s, aml_name("_UID"), aml_arg(0)));
702 aml_append(dev, method);
703
704 aml_append(dev_container, dev);
705 }
706
707 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
708 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... }
709 */
710 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
711 for (i = 0; i < nr_mem; i++) {
712 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
713 aml_append(ifctx,
714 aml_notify(aml_name("MP%.02X", i), aml_arg(1))
715 );
716 aml_append(method, ifctx);
717 }
718 aml_append(dev_container, method);
719 }
720 aml_append(table, dev_container);
721
722 if (event_handler_method) {
723 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED);
724 aml_append(method, aml_call0(MEMORY_DEVICES_CONTAINER "."
725 MEMORY_SLOT_SCAN_METHOD));
726 aml_append(table, method);
727 }
728
729 g_free(mhp_res_path);
730 }