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/boards.h"
6 #include "hw/qdev-core.h"
7 #include "trace.h"
8 #include "qapi/error.h"
9 #include "qapi/qapi-events-misc.h"
10
11 #define MEMORY_SLOTS_NUMBER "MDNR"
12 #define MEMORY_HOTPLUG_IO_REGION "HPMR"
13 #define MEMORY_SLOT_ADDR_LOW "MRBL"
14 #define MEMORY_SLOT_ADDR_HIGH "MRBH"
15 #define MEMORY_SLOT_SIZE_LOW "MRLL"
16 #define MEMORY_SLOT_SIZE_HIGH "MRLH"
17 #define MEMORY_SLOT_PROXIMITY "MPX"
18 #define MEMORY_SLOT_ENABLED "MES"
19 #define MEMORY_SLOT_INSERT_EVENT "MINS"
20 #define MEMORY_SLOT_REMOVE_EVENT "MRMV"
21 #define MEMORY_SLOT_EJECT "MEJ"
22 #define MEMORY_SLOT_SLECTOR "MSEL"
23 #define MEMORY_SLOT_OST_EVENT "MOEV"
24 #define MEMORY_SLOT_OST_STATUS "MOSC"
25 #define MEMORY_SLOT_LOCK "MLCK"
26 #define MEMORY_SLOT_STATUS_METHOD "MRST"
27 #define MEMORY_SLOT_CRS_METHOD "MCRS"
28 #define MEMORY_SLOT_OST_METHOD "MOST"
29 #define MEMORY_SLOT_PROXIMITY_METHOD "MPXM"
30 #define MEMORY_SLOT_EJECT_METHOD "MEJ0"
31 #define MEMORY_SLOT_NOTIFY_METHOD "MTFY"
32 #define MEMORY_SLOT_SCAN_METHOD "MSCN"
33 #define MEMORY_HOTPLUG_DEVICE "MHPD"
34 #define MEMORY_HOTPLUG_IO_LEN 24
35 #define MEMORY_DEVICES_CONTAINER "\\_SB.MHPC"
36
37 static uint16_t memhp_io_base;
38
acpi_memory_device_status(int slot,MemStatus * mdev)39 static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev)
40 {
41 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1);
42
43 info->slot_type = ACPI_SLOT_TYPE_DIMM;
44 info->slot = g_strdup_printf("%d", slot);
45 info->source = mdev->ost_event;
46 info->status = mdev->ost_status;
47 if (mdev->dimm) {
48 DeviceState *dev = DEVICE(mdev->dimm);
49 if (dev->id) {
50 info->device = g_strdup(dev->id);
51 info->has_device = true;
52 }
53 }
54 return info;
55 }
56
acpi_memory_ospm_status(MemHotplugState * mem_st,ACPIOSTInfoList *** list)57 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list)
58 {
59 int i;
60
61 for (i = 0; i < mem_st->dev_count; i++) {
62 ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1);
63 elem->value = acpi_memory_device_status(i, &mem_st->devs[i]);
64 elem->next = NULL;
65 **list = elem;
66 *list = &elem->next;
67 }
68 }
69
acpi_memory_hotplug_read(void * opaque,hwaddr addr,unsigned int size)70 static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr,
71 unsigned int size)
72 {
73 uint32_t val = 0;
74 MemHotplugState *mem_st = opaque;
75 MemStatus *mdev;
76 Object *o;
77
78 if (mem_st->selector >= mem_st->dev_count) {
79 trace_mhp_acpi_invalid_slot_selected(mem_st->selector);
80 return 0;
81 }
82
83 mdev = &mem_st->devs[mem_st->selector];
84 o = OBJECT(mdev->dimm);
85 switch (addr) {
86 case 0x0: /* Lo part of phys address where DIMM is mapped */
87 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0;
88 trace_mhp_acpi_read_addr_lo(mem_st->selector, val);
89 break;
90 case 0x4: /* Hi part of phys address where DIMM is mapped */
91 val =
92 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0;
93 trace_mhp_acpi_read_addr_hi(mem_st->selector, val);
94 break;
95 case 0x8: /* Lo part of DIMM size */
96 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0;
97 trace_mhp_acpi_read_size_lo(mem_st->selector, val);
98 break;
99 case 0xc: /* Hi part of DIMM size */
100 val =
101 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0;
102 trace_mhp_acpi_read_size_hi(mem_st->selector, val);
103 break;
104 case 0x10: /* node proximity for _PXM method */
105 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0;
106 trace_mhp_acpi_read_pxm(mem_st->selector, val);
107 break;
108 case 0x14: /* pack and return is_* fields */
109 val |= mdev->is_enabled ? 1 : 0;
110 val |= mdev->is_inserting ? 2 : 0;
111 val |= mdev->is_removing ? 4 : 0;
112 trace_mhp_acpi_read_flags(mem_st->selector, val);
113 break;
114 default:
115 val = ~0;
116 break;
117 }
118 return val;
119 }
120
acpi_memory_hotplug_write(void * opaque,hwaddr addr,uint64_t data,unsigned int size)121 static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
122 unsigned int size)
123 {
124 MemHotplugState *mem_st = opaque;
125 MemStatus *mdev;
126 ACPIOSTInfo *info;
127 DeviceState *dev = NULL;
128 HotplugHandler *hotplug_ctrl = NULL;
129 Error *local_err = NULL;
130
131 if (!mem_st->dev_count) {
132 return;
133 }
134
135 if (addr) {
136 if (mem_st->selector >= mem_st->dev_count) {
137 trace_mhp_acpi_invalid_slot_selected(mem_st->selector);
138 return;
139 }
140 }
141
142 switch (addr) {
143 case 0x0: /* DIMM slot selector */
144 mem_st->selector = data;
145 trace_mhp_acpi_write_slot(mem_st->selector);
146 break;
147 case 0x4: /* _OST event */
148 mdev = &mem_st->devs[mem_st->selector];
149 if (data == 1) {
150 /* TODO: handle device insert OST event */
151 } else if (data == 3) {
152 /* TODO: handle device remove OST event */
153 }
154 mdev->ost_event = data;
155 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event);
156 break;
157 case 0x8: /* _OST status */
158 mdev = &mem_st->devs[mem_st->selector];
159 mdev->ost_status = data;
160 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status);
161 /* TODO: implement memory removal on guest signal */
162
163 info = acpi_memory_device_status(mem_st->selector, mdev);
164 qapi_event_send_acpi_device_ost(info);
165 qapi_free_ACPIOSTInfo(info);
166 break;
167 case 0x14: /* set is_* fields */
168 mdev = &mem_st->devs[mem_st->selector];
169 if (data & 2) { /* clear insert event */
170 mdev->is_inserting = false;
171 trace_mhp_acpi_clear_insert_evt(mem_st->selector);
172 } else if (data & 4) {
173 mdev->is_removing = false;
174 trace_mhp_acpi_clear_remove_evt(mem_st->selector);
175 } else if (data & 8) {
176 if (!mdev->is_enabled) {
177 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector);
178 break;
179 }
180
181 dev = DEVICE(mdev->dimm);
182 hotplug_ctrl = qdev_get_hotplug_handler(dev);
183 /* call pc-dimm unplug cb */
184 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
185 if (local_err) {
186 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector);
187 qapi_event_send_mem_unplug_error(dev->id,
188 error_get_pretty(local_err));
189 error_free(local_err);
190 break;
191 }
192 trace_mhp_acpi_pc_dimm_deleted(mem_st->selector);
193 }
194 break;
195 default:
196 break;
197 }
198
199 }
200 static const MemoryRegionOps acpi_memory_hotplug_ops = {
201 .read = acpi_memory_hotplug_read,
202 .write = acpi_memory_hotplug_write,
203 .endianness = DEVICE_LITTLE_ENDIAN,
204 .valid = {
205 .min_access_size = 1,
206 .max_access_size = 4,
207 },
208 };
209
acpi_memory_hotplug_init(MemoryRegion * as,Object * owner,MemHotplugState * state,uint16_t io_base)210 void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
211 MemHotplugState *state, uint16_t io_base)
212 {
213 MachineState *machine = MACHINE(qdev_get_machine());
214
215 state->dev_count = machine->ram_slots;
216 if (!state->dev_count) {
217 return;
218 }
219
220 assert(!memhp_io_base);
221 memhp_io_base = io_base;
222 state->devs = g_malloc0(sizeof(*state->devs) * state->dev_count);
223 memory_region_init_io(&state->io, owner, &acpi_memory_hotplug_ops, state,
224 "acpi-mem-hotplug", MEMORY_HOTPLUG_IO_LEN);
225 memory_region_add_subregion(as, memhp_io_base, &state->io);
226 }
227
228 /**
229 * acpi_memory_slot_status:
230 * @mem_st: memory hotplug state
231 * @dev: device
232 * @errp: set in case of an error
233 *
234 * Obtain a single memory slot status.
235 *
236 * This function will be called by memory unplug request cb and unplug cb.
237 */
238 static MemStatus *
acpi_memory_slot_status(MemHotplugState * mem_st,DeviceState * dev,Error ** errp)239 acpi_memory_slot_status(MemHotplugState *mem_st,
240 DeviceState *dev, Error **errp)
241 {
242 Error *local_err = NULL;
243 int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP,
244 &local_err);
245
246 if (local_err) {
247 error_propagate(errp, local_err);
248 return NULL;
249 }
250
251 if (slot >= mem_st->dev_count) {
252 char *dev_path = object_get_canonical_path(OBJECT(dev));
253 error_setg(errp, "acpi_memory_slot_status: "
254 "device [%s] returned invalid memory slot[%d]",
255 dev_path, slot);
256 g_free(dev_path);
257 return NULL;
258 }
259
260 return &mem_st->devs[slot];
261 }
262
acpi_memory_plug_cb(HotplugHandler * hotplug_dev,MemHotplugState * mem_st,DeviceState * dev,Error ** errp)263 void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st,
264 DeviceState *dev, Error **errp)
265 {
266 MemStatus *mdev;
267 DeviceClass *dc = DEVICE_GET_CLASS(dev);
268
269 if (!dc->hotpluggable) {
270 return;
271 }
272
273 mdev = acpi_memory_slot_status(mem_st, dev, errp);
274 if (!mdev) {
275 return;
276 }
277
278 mdev->dimm = dev;
279 mdev->is_enabled = true;
280 if (dev->hotplugged) {
281 mdev->is_inserting = true;
282 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
283 }
284 }
285
acpi_memory_unplug_request_cb(HotplugHandler * hotplug_dev,MemHotplugState * mem_st,DeviceState * dev,Error ** errp)286 void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev,
287 MemHotplugState *mem_st,
288 DeviceState *dev, Error **errp)
289 {
290 MemStatus *mdev;
291
292 mdev = acpi_memory_slot_status(mem_st, dev, errp);
293 if (!mdev) {
294 return;
295 }
296
297 mdev->is_removing = true;
298 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
299 }
300
acpi_memory_unplug_cb(MemHotplugState * mem_st,DeviceState * dev,Error ** errp)301 void acpi_memory_unplug_cb(MemHotplugState *mem_st,
302 DeviceState *dev, Error **errp)
303 {
304 MemStatus *mdev;
305
306 mdev = acpi_memory_slot_status(mem_st, dev, errp);
307 if (!mdev) {
308 return;
309 }
310
311 mdev->is_enabled = false;
312 mdev->dimm = NULL;
313 }
314
315 static const VMStateDescription vmstate_memhp_sts = {
316 .name = "memory hotplug device state",
317 .version_id = 1,
318 .minimum_version_id = 1,
319 .minimum_version_id_old = 1,
320 .fields = (VMStateField[]) {
321 VMSTATE_BOOL(is_enabled, MemStatus),
322 VMSTATE_BOOL(is_inserting, MemStatus),
323 VMSTATE_UINT32(ost_event, MemStatus),
324 VMSTATE_UINT32(ost_status, MemStatus),
325 VMSTATE_END_OF_LIST()
326 }
327 };
328
329 const VMStateDescription vmstate_memory_hotplug = {
330 .name = "memory hotplug state",
331 .version_id = 1,
332 .minimum_version_id = 1,
333 .minimum_version_id_old = 1,
334 .fields = (VMStateField[]) {
335 VMSTATE_UINT32(selector, MemHotplugState),
336 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count,
337 vmstate_memhp_sts, MemStatus),
338 VMSTATE_END_OF_LIST()
339 }
340 };
341
build_memory_hotplug_aml(Aml * table,uint32_t nr_mem,const char * res_root,const char * event_handler_method)342 void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem,
343 const char *res_root,
344 const char *event_handler_method)
345 {
346 int i;
347 Aml *ifctx;
348 Aml *method;
349 Aml *dev_container;
350 Aml *mem_ctrl_dev;
351 char *mhp_res_path;
352
353 if (!memhp_io_base) {
354 return;
355 }
356
357 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root);
358 mem_ctrl_dev = aml_device("%s", mhp_res_path);
359 {
360 Aml *crs;
361
362 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06")));
363 aml_append(mem_ctrl_dev,
364 aml_name_decl("_UID", aml_string("Memory hotplug resources")));
365
366 crs = aml_resource_template();
367 aml_append(crs,
368 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0,
369 MEMORY_HOTPLUG_IO_LEN)
370 );
371 aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs));
372
373 aml_append(mem_ctrl_dev, aml_operation_region(
374 MEMORY_HOTPLUG_IO_REGION, AML_SYSTEM_IO,
375 aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN)
376 );
377
378 }
379 aml_append(table, mem_ctrl_dev);
380
381 dev_container = aml_device(MEMORY_DEVICES_CONTAINER);
382 {
383 Aml *field;
384 Aml *one = aml_int(1);
385 Aml *zero = aml_int(0);
386 Aml *ret_val = aml_local(0);
387 Aml *slot_arg0 = aml_arg(0);
388 Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER);
389 Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK);
390 Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR);
391 char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION,
392 mhp_res_path);
393
394 aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06")));
395 aml_append(dev_container,
396 aml_name_decl("_UID", aml_string("DIMM devices")));
397
398 assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
399 aml_append(dev_container,
400 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem))
401 );
402
403 field = aml_field(mmio_path, AML_DWORD_ACC,
404 AML_NOLOCK, AML_PRESERVE);
405 aml_append(field, /* read only */
406 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32));
407 aml_append(field, /* read only */
408 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32));
409 aml_append(field, /* read only */
410 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32));
411 aml_append(field, /* read only */
412 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32));
413 aml_append(field, /* read only */
414 aml_named_field(MEMORY_SLOT_PROXIMITY, 32));
415 aml_append(dev_container, field);
416
417 field = aml_field(mmio_path, AML_BYTE_ACC,
418 AML_NOLOCK, AML_WRITE_AS_ZEROS);
419 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
420 aml_append(field, /* 1 if enabled, read only */
421 aml_named_field(MEMORY_SLOT_ENABLED, 1));
422 aml_append(field,
423 /*(read) 1 if has a insert event. (write) 1 to clear event */
424 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1));
425 aml_append(field,
426 /* (read) 1 if has a remove event. (write) 1 to clear event */
427 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1));
428 aml_append(field,
429 /* initiates device eject, write only */
430 aml_named_field(MEMORY_SLOT_EJECT, 1));
431 aml_append(dev_container, field);
432
433 field = aml_field(mmio_path, AML_DWORD_ACC,
434 AML_NOLOCK, AML_PRESERVE);
435 aml_append(field, /* DIMM selector, write only */
436 aml_named_field(MEMORY_SLOT_SLECTOR, 32));
437 aml_append(field, /* _OST event code, write only */
438 aml_named_field(MEMORY_SLOT_OST_EVENT, 32));
439 aml_append(field, /* _OST status code, write only */
440 aml_named_field(MEMORY_SLOT_OST_STATUS, 32));
441 aml_append(dev_container, field);
442 g_free(mmio_path);
443
444 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
445 ifctx = aml_if(aml_equal(slots_nr, zero));
446 {
447 aml_append(ifctx, aml_return(zero));
448 }
449 aml_append(method, ifctx);
450 /* present, functioning, decoding, not shown in UI */
451 aml_append(method, aml_return(aml_int(0xB)));
452 aml_append(dev_container, method);
453
454 aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0));
455
456 method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED);
457 {
458 Aml *else_ctx;
459 Aml *while_ctx;
460 Aml *idx = aml_local(0);
461 Aml *eject_req = aml_int(3);
462 Aml *dev_chk = aml_int(1);
463
464 ifctx = aml_if(aml_equal(slots_nr, zero));
465 {
466 aml_append(ifctx, aml_return(zero));
467 }
468 aml_append(method, ifctx);
469
470 aml_append(method, aml_store(zero, idx));
471 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
472 /* build AML that:
473 * loops over all slots and Notifies DIMMs with
474 * Device Check or Eject Request notifications if
475 * slot has corresponding status bit set and clears
476 * slot status.
477 */
478 while_ctx = aml_while(aml_lless(idx, slots_nr));
479 {
480 Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT);
481 Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT);
482
483 aml_append(while_ctx, aml_store(idx, slot_selector));
484 ifctx = aml_if(aml_equal(ins_evt, one));
485 {
486 aml_append(ifctx,
487 aml_call2(MEMORY_SLOT_NOTIFY_METHOD,
488 idx, dev_chk));
489 aml_append(ifctx, aml_store(one, ins_evt));
490 }
491 aml_append(while_ctx, ifctx);
492
493 else_ctx = aml_else();
494 ifctx = aml_if(aml_equal(rm_evt, one));
495 {
496 aml_append(ifctx,
497 aml_call2(MEMORY_SLOT_NOTIFY_METHOD,
498 idx, eject_req));
499 aml_append(ifctx, aml_store(one, rm_evt));
500 }
501 aml_append(else_ctx, ifctx);
502 aml_append(while_ctx, else_ctx);
503
504 aml_append(while_ctx, aml_add(idx, one, idx));
505 }
506 aml_append(method, while_ctx);
507 aml_append(method, aml_release(ctrl_lock));
508 aml_append(method, aml_return(one));
509 }
510 aml_append(dev_container, method);
511
512 method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED);
513 {
514 Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED);
515
516 aml_append(method, aml_store(zero, ret_val));
517 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
518 aml_append(method,
519 aml_store(aml_to_integer(slot_arg0), slot_selector));
520
521 ifctx = aml_if(aml_equal(slot_enabled, one));
522 {
523 aml_append(ifctx, aml_store(aml_int(0xF), ret_val));
524 }
525 aml_append(method, ifctx);
526
527 aml_append(method, aml_release(ctrl_lock));
528 aml_append(method, aml_return(ret_val));
529 }
530 aml_append(dev_container, method);
531
532 method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED);
533 {
534 Aml *mr64 = aml_name("MR64");
535 Aml *mr32 = aml_name("MR32");
536 Aml *crs_tmpl = aml_resource_template();
537 Aml *minl = aml_name("MINL");
538 Aml *minh = aml_name("MINH");
539 Aml *maxl = aml_name("MAXL");
540 Aml *maxh = aml_name("MAXH");
541 Aml *lenl = aml_name("LENL");
542 Aml *lenh = aml_name("LENH");
543
544 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
545 aml_append(method, aml_store(aml_to_integer(slot_arg0),
546 slot_selector));
547
548 aml_append(crs_tmpl,
549 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
550 AML_CACHEABLE, AML_READ_WRITE,
551 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0,
552 0xFFFFFFFFFFFFFFFFULL));
553 aml_append(method, aml_name_decl("MR64", crs_tmpl));
554 aml_append(method,
555 aml_create_dword_field(mr64, aml_int(14), "MINL"));
556 aml_append(method,
557 aml_create_dword_field(mr64, aml_int(18), "MINH"));
558 aml_append(method,
559 aml_create_dword_field(mr64, aml_int(38), "LENL"));
560 aml_append(method,
561 aml_create_dword_field(mr64, aml_int(42), "LENH"));
562 aml_append(method,
563 aml_create_dword_field(mr64, aml_int(22), "MAXL"));
564 aml_append(method,
565 aml_create_dword_field(mr64, aml_int(26), "MAXH"));
566
567 aml_append(method,
568 aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh));
569 aml_append(method,
570 aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl));
571 aml_append(method,
572 aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh));
573 aml_append(method,
574 aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl));
575
576 /* 64-bit math: MAX = MIN + LEN - 1 */
577 aml_append(method, aml_add(minl, lenl, maxl));
578 aml_append(method, aml_add(minh, lenh, maxh));
579 ifctx = aml_if(aml_lless(maxl, minl));
580 {
581 aml_append(ifctx, aml_add(maxh, one, maxh));
582 }
583 aml_append(method, ifctx);
584 ifctx = aml_if(aml_lless(maxl, one));
585 {
586 aml_append(ifctx, aml_subtract(maxh, one, maxh));
587 }
588 aml_append(method, ifctx);
589 aml_append(method, aml_subtract(maxl, one, maxl));
590
591 /* return 32-bit _CRS if addr/size is in low mem */
592 /* TODO: remove it since all hotplugged DIMMs are in high mem */
593 ifctx = aml_if(aml_equal(maxh, zero));
594 {
595 crs_tmpl = aml_resource_template();
596 aml_append(crs_tmpl,
597 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
598 AML_MAX_FIXED, AML_CACHEABLE,
599 AML_READ_WRITE,
600 0, 0x0, 0xFFFFFFFE, 0,
601 0xFFFFFFFF));
602 aml_append(ifctx, aml_name_decl("MR32", crs_tmpl));
603 aml_append(ifctx,
604 aml_create_dword_field(mr32, aml_int(10), "MIN"));
605 aml_append(ifctx,
606 aml_create_dword_field(mr32, aml_int(14), "MAX"));
607 aml_append(ifctx,
608 aml_create_dword_field(mr32, aml_int(22), "LEN"));
609 aml_append(ifctx, aml_store(minl, aml_name("MIN")));
610 aml_append(ifctx, aml_store(maxl, aml_name("MAX")));
611 aml_append(ifctx, aml_store(lenl, aml_name("LEN")));
612
613 aml_append(ifctx, aml_release(ctrl_lock));
614 aml_append(ifctx, aml_return(mr32));
615 }
616 aml_append(method, ifctx);
617
618 aml_append(method, aml_release(ctrl_lock));
619 aml_append(method, aml_return(mr64));
620 }
621 aml_append(dev_container, method);
622
623 method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1,
624 AML_NOTSERIALIZED);
625 {
626 Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY);
627
628 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
629 aml_append(method, aml_store(aml_to_integer(slot_arg0),
630 slot_selector));
631 aml_append(method, aml_store(proximity, ret_val));
632 aml_append(method, aml_release(ctrl_lock));
633 aml_append(method, aml_return(ret_val));
634 }
635 aml_append(dev_container, method);
636
637 method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED);
638 {
639 Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT);
640 Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS);
641
642 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
643 aml_append(method, aml_store(aml_to_integer(slot_arg0),
644 slot_selector));
645 aml_append(method, aml_store(aml_arg(1), ost_evt));
646 aml_append(method, aml_store(aml_arg(2), ost_status));
647 aml_append(method, aml_release(ctrl_lock));
648 }
649 aml_append(dev_container, method);
650
651 method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED);
652 {
653 Aml *eject = aml_name(MEMORY_SLOT_EJECT);
654
655 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
656 aml_append(method, aml_store(aml_to_integer(slot_arg0),
657 slot_selector));
658 aml_append(method, aml_store(one, eject));
659 aml_append(method, aml_release(ctrl_lock));
660 }
661 aml_append(dev_container, method);
662
663 /* build memory devices */
664 for (i = 0; i < nr_mem; i++) {
665 Aml *dev;
666 const char *s;
667
668 dev = aml_device("MP%02X", i);
669 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i)));
670 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
671
672 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
673 s = MEMORY_SLOT_CRS_METHOD;
674 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
675 aml_append(dev, method);
676
677 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
678 s = MEMORY_SLOT_STATUS_METHOD;
679 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
680 aml_append(dev, method);
681
682 method = aml_method("_PXM", 0, AML_NOTSERIALIZED);
683 s = MEMORY_SLOT_PROXIMITY_METHOD;
684 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
685 aml_append(dev, method);
686
687 method = aml_method("_OST", 3, AML_NOTSERIALIZED);
688 s = MEMORY_SLOT_OST_METHOD;
689 aml_append(method, aml_return(aml_call4(
690 s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2)
691 )));
692 aml_append(dev, method);
693
694 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
695 s = MEMORY_SLOT_EJECT_METHOD;
696 aml_append(method, aml_return(aml_call2(
697 s, aml_name("_UID"), aml_arg(0))));
698 aml_append(dev, method);
699
700 aml_append(dev_container, dev);
701 }
702
703 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
704 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... }
705 */
706 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
707 for (i = 0; i < nr_mem; i++) {
708 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
709 aml_append(ifctx,
710 aml_notify(aml_name("MP%.02X", i), aml_arg(1))
711 );
712 aml_append(method, ifctx);
713 }
714 aml_append(dev_container, method);
715 }
716 aml_append(table, dev_container);
717
718 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED);
719 aml_append(method,
720 aml_call0(MEMORY_DEVICES_CONTAINER "." MEMORY_SLOT_SCAN_METHOD));
721 aml_append(table, method);
722
723 g_free(mhp_res_path);
724 }
725