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pc: acpi: fix pvpanic for buggy guests
[qemu/kevin.git] / hw / i386 / acpi-build.c
blob283d02e7a7680c99f677d471495d8335b9455bff
1 /* Support for generating ACPI tables and passing them to Guests
2 *
3 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
4 * Copyright (C) 2006 Fabrice Bellard
5 * Copyright (C) 2013 Red Hat Inc
6 *
7 * Author: Michael S. Tsirkin <mst@redhat.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "acpi-build.h"
24 #include <stddef.h>
25 #include <glib.h>
26 #include "qemu-common.h"
27 #include "qemu/bitmap.h"
28 #include "qemu/osdep.h"
29 #include "qemu/error-report.h"
30 #include "hw/pci/pci.h"
31 #include "qom/cpu.h"
32 #include "hw/i386/pc.h"
33 #include "target-i386/cpu.h"
34 #include "hw/timer/hpet.h"
35 #include "hw/acpi/acpi-defs.h"
36 #include "hw/acpi/acpi.h"
37 #include "hw/nvram/fw_cfg.h"
38 #include "hw/acpi/bios-linker-loader.h"
39 #include "hw/loader.h"
40 #include "hw/isa/isa.h"
41 #include "hw/acpi/memory_hotplug.h"
42 #include "sysemu/tpm.h"
43 #include "hw/acpi/tpm.h"
44
45 /* Supported chipsets: */
46 #include "hw/acpi/piix4.h"
47 #include "hw/acpi/pcihp.h"
48 #include "hw/i386/ich9.h"
49 #include "hw/pci/pci_bus.h"
50 #include "hw/pci-host/q35.h"
51 #include "hw/i386/intel_iommu.h"
52
53 #include "hw/i386/q35-acpi-dsdt.hex"
54 #include "hw/i386/acpi-dsdt.hex"
55
56 #include "hw/acpi/aml-build.h"
57
58 #include "qapi/qmp/qint.h"
59 #include "qom/qom-qobject.h"
60
61 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
62 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
63 * a little bit, there should be plenty of free space since the DSDT
64 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
65 */
66 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
67 #define ACPI_BUILD_ALIGN_SIZE 0x1000
68
69 #define ACPI_BUILD_TABLE_SIZE 0x20000
70
71 /* #define DEBUG_ACPI_BUILD */
72 #ifdef DEBUG_ACPI_BUILD
73 #define ACPI_BUILD_DPRINTF(fmt, ...) \
74 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
75 #else
76 #define ACPI_BUILD_DPRINTF(fmt, ...)
77 #endif
78
79 typedef struct AcpiCpuInfo {
80 DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT);
81 } AcpiCpuInfo;
82
83 typedef struct AcpiMcfgInfo {
84 uint64_t mcfg_base;
85 uint32_t mcfg_size;
86 } AcpiMcfgInfo;
87
88 typedef struct AcpiPmInfo {
89 bool s3_disabled;
90 bool s4_disabled;
91 bool pcihp_bridge_en;
92 uint8_t s4_val;
93 uint16_t sci_int;
94 uint8_t acpi_enable_cmd;
95 uint8_t acpi_disable_cmd;
96 uint32_t gpe0_blk;
97 uint32_t gpe0_blk_len;
98 uint32_t io_base;
99 uint16_t cpu_hp_io_base;
100 uint16_t cpu_hp_io_len;
101 uint16_t mem_hp_io_base;
102 uint16_t mem_hp_io_len;
103 uint16_t pcihp_io_base;
104 uint16_t pcihp_io_len;
105 } AcpiPmInfo;
106
107 typedef struct AcpiMiscInfo {
108 bool has_hpet;
109 bool has_tpm;
110 const unsigned char *dsdt_code;
111 unsigned dsdt_size;
112 uint16_t pvpanic_port;
113 uint16_t applesmc_io_base;
114 } AcpiMiscInfo;
115
116 typedef struct AcpiBuildPciBusHotplugState {
117 GArray *device_table;
118 GArray *notify_table;
119 struct AcpiBuildPciBusHotplugState *parent;
120 bool pcihp_bridge_en;
121 } AcpiBuildPciBusHotplugState;
122
123 static void acpi_get_dsdt(AcpiMiscInfo *info)
124 {
125 Object *piix = piix4_pm_find();
126 Object *lpc = ich9_lpc_find();
127 assert(!!piix != !!lpc);
128
129 if (piix) {
130 info->dsdt_code = AcpiDsdtAmlCode;
131 info->dsdt_size = sizeof AcpiDsdtAmlCode;
132 }
133 if (lpc) {
134 info->dsdt_code = Q35AcpiDsdtAmlCode;
135 info->dsdt_size = sizeof Q35AcpiDsdtAmlCode;
136 }
137 }
138
139 static
140 int acpi_add_cpu_info(Object *o, void *opaque)
141 {
142 AcpiCpuInfo *cpu = opaque;
143 uint64_t apic_id;
144
145 if (object_dynamic_cast(o, TYPE_CPU)) {
146 apic_id = object_property_get_int(o, "apic-id", NULL);
147 assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT);
148
149 set_bit(apic_id, cpu->found_cpus);
150 }
151
152 object_child_foreach(o, acpi_add_cpu_info, opaque);
153 return 0;
154 }
155
156 static void acpi_get_cpu_info(AcpiCpuInfo *cpu)
157 {
158 Object *root = object_get_root();
159
160 memset(cpu->found_cpus, 0, sizeof cpu->found_cpus);
161 object_child_foreach(root, acpi_add_cpu_info, cpu);
162 }
163
164 static void acpi_get_pm_info(AcpiPmInfo *pm)
165 {
166 Object *piix = piix4_pm_find();
167 Object *lpc = ich9_lpc_find();
168 Object *obj = NULL;
169 QObject *o;
170
171 pm->pcihp_io_base = 0;
172 pm->pcihp_io_len = 0;
173 if (piix) {
174 obj = piix;
175 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE;
176 pm->pcihp_io_base =
177 object_property_get_int(obj, ACPI_PCIHP_IO_BASE_PROP, NULL);
178 pm->pcihp_io_len =
179 object_property_get_int(obj, ACPI_PCIHP_IO_LEN_PROP, NULL);
180 }
181 if (lpc) {
182 obj = lpc;
183 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE;
184 }
185 assert(obj);
186
187 pm->cpu_hp_io_len = ACPI_GPE_PROC_LEN;
188 pm->mem_hp_io_base = ACPI_MEMORY_HOTPLUG_BASE;
189 pm->mem_hp_io_len = ACPI_MEMORY_HOTPLUG_IO_LEN;
190
191 /* Fill in optional s3/s4 related properties */
192 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
193 if (o) {
194 pm->s3_disabled = qint_get_int(qobject_to_qint(o));
195 } else {
196 pm->s3_disabled = false;
197 }
198 qobject_decref(o);
199 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
200 if (o) {
201 pm->s4_disabled = qint_get_int(qobject_to_qint(o));
202 } else {
203 pm->s4_disabled = false;
204 }
205 qobject_decref(o);
206 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
207 if (o) {
208 pm->s4_val = qint_get_int(qobject_to_qint(o));
209 } else {
210 pm->s4_val = false;
211 }
212 qobject_decref(o);
213
214 /* Fill in mandatory properties */
215 pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL);
216
217 pm->acpi_enable_cmd = object_property_get_int(obj,
218 ACPI_PM_PROP_ACPI_ENABLE_CMD,
219 NULL);
220 pm->acpi_disable_cmd = object_property_get_int(obj,
221 ACPI_PM_PROP_ACPI_DISABLE_CMD,
222 NULL);
223 pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE,
224 NULL);
225 pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK,
226 NULL);
227 pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
228 NULL);
229 pm->pcihp_bridge_en =
230 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
231 NULL);
232 }
233
234 static void acpi_get_misc_info(AcpiMiscInfo *info)
235 {
236 info->has_hpet = hpet_find();
237 info->has_tpm = tpm_find();
238 info->pvpanic_port = pvpanic_port();
239 info->applesmc_io_base = applesmc_port();
240 }
241
242 static void acpi_get_pci_info(PcPciInfo *info)
243 {
244 Object *pci_host;
245 bool ambiguous;
246
247 pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
248 g_assert(!ambiguous);
249 g_assert(pci_host);
250
251 info->w32.begin = object_property_get_int(pci_host,
252 PCI_HOST_PROP_PCI_HOLE_START,
253 NULL);
254 info->w32.end = object_property_get_int(pci_host,
255 PCI_HOST_PROP_PCI_HOLE_END,
256 NULL);
257 info->w64.begin = object_property_get_int(pci_host,
258 PCI_HOST_PROP_PCI_HOLE64_START,
259 NULL);
260 info->w64.end = object_property_get_int(pci_host,
261 PCI_HOST_PROP_PCI_HOLE64_END,
262 NULL);
263 }
264
265 #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */
266
267 static void acpi_align_size(GArray *blob, unsigned align)
268 {
269 /* Align size to multiple of given size. This reduces the chance
270 * we need to change size in the future (breaking cross version migration).
271 */
272 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
273 }
274
275 /* FACS */
276 static void
277 build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info)
278 {
279 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
280 memcpy(&facs->signature, "FACS", 4);
281 facs->length = cpu_to_le32(sizeof(*facs));
282 }
283
284 /* Load chipset information in FADT */
285 static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm)
286 {
287 fadt->model = 1;
288 fadt->reserved1 = 0;
289 fadt->sci_int = cpu_to_le16(pm->sci_int);
290 fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD);
291 fadt->acpi_enable = pm->acpi_enable_cmd;
292 fadt->acpi_disable = pm->acpi_disable_cmd;
293 /* EVT, CNT, TMR offset matches hw/acpi/core.c */
294 fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base);
295 fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04);
296 fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08);
297 fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk);
298 /* EVT, CNT, TMR length matches hw/acpi/core.c */
299 fadt->pm1_evt_len = 4;
300 fadt->pm1_cnt_len = 2;
301 fadt->pm_tmr_len = 4;
302 fadt->gpe0_blk_len = pm->gpe0_blk_len;
303 fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */
304 fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */
305 fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) |
306 (1 << ACPI_FADT_F_PROC_C1) |
307 (1 << ACPI_FADT_F_SLP_BUTTON) |
308 (1 << ACPI_FADT_F_RTC_S4));
309 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK);
310 /* APIC destination mode ("Flat Logical") has an upper limit of 8 CPUs
311 * For more than 8 CPUs, "Clustered Logical" mode has to be used
312 */
313 if (max_cpus > 8) {
314 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL);
315 }
316 }
317
318
319 /* FADT */
320 static void
321 build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
322 unsigned facs, unsigned dsdt)
323 {
324 AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
325
326 fadt->firmware_ctrl = cpu_to_le32(facs);
327 /* FACS address to be filled by Guest linker */
328 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
329 ACPI_BUILD_TABLE_FILE,
330 table_data, &fadt->firmware_ctrl,
331 sizeof fadt->firmware_ctrl);
332
333 fadt->dsdt = cpu_to_le32(dsdt);
334 /* DSDT address to be filled by Guest linker */
335 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
336 ACPI_BUILD_TABLE_FILE,
337 table_data, &fadt->dsdt,
338 sizeof fadt->dsdt);
339
340 fadt_setup(fadt, pm);
341
342 build_header(linker, table_data,
343 (void *)fadt, "FACP", sizeof(*fadt), 1);
344 }
345
346 static void
347 build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu,
348 PcGuestInfo *guest_info)
349 {
350 int madt_start = table_data->len;
351
352 AcpiMultipleApicTable *madt;
353 AcpiMadtIoApic *io_apic;
354 AcpiMadtIntsrcovr *intsrcovr;
355 AcpiMadtLocalNmi *local_nmi;
356 int i;
357
358 madt = acpi_data_push(table_data, sizeof *madt);
359 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
360 madt->flags = cpu_to_le32(1);
361
362 for (i = 0; i < guest_info->apic_id_limit; i++) {
363 AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic);
364 apic->type = ACPI_APIC_PROCESSOR;
365 apic->length = sizeof(*apic);
366 apic->processor_id = i;
367 apic->local_apic_id = i;
368 if (test_bit(i, cpu->found_cpus)) {
369 apic->flags = cpu_to_le32(1);
370 } else {
371 apic->flags = cpu_to_le32(0);
372 }
373 }
374 io_apic = acpi_data_push(table_data, sizeof *io_apic);
375 io_apic->type = ACPI_APIC_IO;
376 io_apic->length = sizeof(*io_apic);
377 #define ACPI_BUILD_IOAPIC_ID 0x0
378 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID;
379 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
380 io_apic->interrupt = cpu_to_le32(0);
381
382 if (guest_info->apic_xrupt_override) {
383 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
384 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
385 intsrcovr->length = sizeof(*intsrcovr);
386 intsrcovr->source = 0;
387 intsrcovr->gsi = cpu_to_le32(2);
388 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
389 }
390 for (i = 1; i < 16; i++) {
391 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
392 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
393 /* No need for a INT source override structure. */
394 continue;
395 }
396 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
397 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
398 intsrcovr->length = sizeof(*intsrcovr);
399 intsrcovr->source = i;
400 intsrcovr->gsi = cpu_to_le32(i);
401 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
402 }
403
404 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
405 local_nmi->type = ACPI_APIC_LOCAL_NMI;
406 local_nmi->length = sizeof(*local_nmi);
407 local_nmi->processor_id = 0xff; /* all processors */
408 local_nmi->flags = cpu_to_le16(0);
409 local_nmi->lint = 1; /* ACPI_LINT1 */
410
411 build_header(linker, table_data,
412 (void *)(table_data->data + madt_start), "APIC",
413 table_data->len - madt_start, 1);
414 }
415
416 #include "hw/i386/ssdt-tpm.hex"
417
418 /* Assign BSEL property to all buses. In the future, this can be changed
419 * to only assign to buses that support hotplug.
420 */
421 static void *acpi_set_bsel(PCIBus *bus, void *opaque)
422 {
423 unsigned *bsel_alloc = opaque;
424 unsigned *bus_bsel;
425
426 if (qbus_is_hotpluggable(BUS(bus))) {
427 bus_bsel = g_malloc(sizeof *bus_bsel);
428
429 *bus_bsel = (*bsel_alloc)++;
430 object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
431 bus_bsel, NULL);
432 }
433
434 return bsel_alloc;
435 }
436
437 static void acpi_set_pci_info(void)
438 {
439 PCIBus *bus = find_i440fx(); /* TODO: Q35 support */
440 unsigned bsel_alloc = 0;
441
442 if (bus) {
443 /* Scan all PCI buses. Set property to enable acpi based hotplug. */
444 pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc);
445 }
446 }
447
448 static void build_append_pcihp_notify_entry(Aml *method, int slot)
449 {
450 Aml *if_ctx;
451 int32_t devfn = PCI_DEVFN(slot, 0);
452
453 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot)));
454 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1)));
455 aml_append(method, if_ctx);
456 }
457
458 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
459 bool pcihp_bridge_en)
460 {
461 Aml *dev, *notify_method, *method;
462 QObject *bsel;
463 PCIBus *sec;
464 int i;
465
466 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
467 if (bsel) {
468 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel));
469
470 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
471 notify_method = aml_method("DVNT", 2);
472 }
473
474 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
475 DeviceClass *dc;
476 PCIDeviceClass *pc;
477 PCIDevice *pdev = bus->devices[i];
478 int slot = PCI_SLOT(i);
479 bool hotplug_enabled_dev;
480 bool bridge_in_acpi;
481
482 if (!pdev) {
483 if (bsel) { /* add hotplug slots for non present devices */
484 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
485 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
486 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
487 method = aml_method("_EJ0", 1);
488 aml_append(method,
489 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
490 );
491 aml_append(dev, method);
492 aml_append(parent_scope, dev);
493
494 build_append_pcihp_notify_entry(notify_method, slot);
495 }
496 continue;
497 }
498
499 pc = PCI_DEVICE_GET_CLASS(pdev);
500 dc = DEVICE_GET_CLASS(pdev);
501
502 /* When hotplug for bridges is enabled, bridges are
503 * described in ACPI separately (see build_pci_bus_end).
504 * In this case they aren't themselves hot-pluggable.
505 * Hotplugged bridges *are* hot-pluggable.
506 */
507 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en &&
508 !DEVICE(pdev)->hotplugged;
509
510 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi;
511
512 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
513 continue;
514 }
515
516 /* start to compose PCI slot descriptor */
517 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
518 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
519
520 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
521 /* add VGA specific AML methods */
522 int s3d;
523
524 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
525 s3d = 3;
526 } else {
527 s3d = 0;
528 }
529
530 method = aml_method("_S1D", 0);
531 aml_append(method, aml_return(aml_int(0)));
532 aml_append(dev, method);
533
534 method = aml_method("_S2D", 0);
535 aml_append(method, aml_return(aml_int(0)));
536 aml_append(dev, method);
537
538 method = aml_method("_S3D", 0);
539 aml_append(method, aml_return(aml_int(s3d)));
540 aml_append(dev, method);
541 } else if (hotplug_enabled_dev) {
542 /* add _SUN/_EJ0 to make slot hotpluggable */
543 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
544
545 method = aml_method("_EJ0", 1);
546 aml_append(method,
547 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
548 );
549 aml_append(dev, method);
550
551 if (bsel) {
552 build_append_pcihp_notify_entry(notify_method, slot);
553 }
554 } else if (bridge_in_acpi) {
555 /*
556 * device is coldplugged bridge,
557 * add child device descriptions into its scope
558 */
559 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
560
561 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en);
562 }
563 /* slot descriptor has been composed, add it into parent context */
564 aml_append(parent_scope, dev);
565 }
566
567 if (bsel) {
568 aml_append(parent_scope, notify_method);
569 }
570
571 /* Append PCNT method to notify about events on local and child buses.
572 * Add unconditionally for root since DSDT expects it.
573 */
574 method = aml_method("PCNT", 0);
575
576 /* If bus supports hotplug select it and notify about local events */
577 if (bsel) {
578 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel));
579 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM")));
580 aml_append(method,
581 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */)
582 );
583 aml_append(method,
584 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */)
585 );
586 }
587
588 /* Notify about child bus events in any case */
589 if (pcihp_bridge_en) {
590 QLIST_FOREACH(sec, &bus->child, sibling) {
591 int32_t devfn = sec->parent_dev->devfn;
592
593 aml_append(method, aml_name("^S%.02X.PCNT", devfn));
594 }
595 }
596 aml_append(parent_scope, method);
597 }
598
599 static void
600 build_ssdt(GArray *table_data, GArray *linker,
601 AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc,
602 PcPciInfo *pci, PcGuestInfo *guest_info)
603 {
604 MachineState *machine = MACHINE(qdev_get_machine());
605 uint32_t nr_mem = machine->ram_slots;
606 unsigned acpi_cpus = guest_info->apic_id_limit;
607 Aml *ssdt, *sb_scope, *scope, *pkg, *dev, *method, *crs, *field, *ifctx;
608 int i;
609
610 ssdt = init_aml_allocator();
611 /* The current AML generator can cover the APIC ID range [0..255],
612 * inclusive, for VCPU hotplug. */
613 QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
614 g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
615
616 /* Reserve space for header */
617 acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader));
618
619 scope = aml_scope("\\_SB.PCI0");
620 /* build PCI0._CRS */
621 crs = aml_resource_template();
622 aml_append(crs,
623 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
624 0x0000, 0x0000, 0x00FF, 0x0000, 0x0100));
625 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08));
626
627 aml_append(crs,
628 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
629 AML_POS_DECODE, AML_ENTIRE_RANGE,
630 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
631 aml_append(crs,
632 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
633 AML_POS_DECODE, AML_ENTIRE_RANGE,
634 0x0000, 0x0D00, 0xFFFF, 0x0000, 0xF300));
635 aml_append(crs,
636 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
637 AML_CACHEABLE, AML_READ_WRITE,
638 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
639 aml_append(crs,
640 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
641 AML_NON_CACHEABLE, AML_READ_WRITE,
642 0, pci->w32.begin, pci->w32.end - 1, 0,
643 pci->w32.end - pci->w32.begin));
644 if (pci->w64.begin) {
645 aml_append(crs,
646 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
647 AML_CACHEABLE, AML_READ_WRITE,
648 0, pci->w64.begin, pci->w64.end - 1, 0,
649 pci->w64.end - pci->w64.begin));
650 }
651 aml_append(scope, aml_name_decl("_CRS", crs));
652
653 /* reserve GPE0 block resources */
654 dev = aml_device("GPE0");
655 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
656 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources")));
657 /* device present, functioning, decoding, not shown in UI */
658 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
659 crs = aml_resource_template();
660 aml_append(crs,
661 aml_io(AML_DECODE16, pm->gpe0_blk, pm->gpe0_blk, 1, pm->gpe0_blk_len)
662 );
663 aml_append(dev, aml_name_decl("_CRS", crs));
664 aml_append(scope, dev);
665
666 /* reserve PCIHP resources */
667 if (pm->pcihp_io_len) {
668 dev = aml_device("PHPR");
669 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
670 aml_append(dev,
671 aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
672 /* device present, functioning, decoding, not shown in UI */
673 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
674 crs = aml_resource_template();
675 aml_append(crs,
676 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1,
677 pm->pcihp_io_len)
678 );
679 aml_append(dev, aml_name_decl("_CRS", crs));
680 aml_append(scope, dev);
681 }
682 aml_append(ssdt, scope);
683
684 /* create S3_ / S4_ / S5_ packages if necessary */
685 scope = aml_scope("\\");
686 if (!pm->s3_disabled) {
687 pkg = aml_package(4);
688 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */
689 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
690 aml_append(pkg, aml_int(0)); /* reserved */
691 aml_append(pkg, aml_int(0)); /* reserved */
692 aml_append(scope, aml_name_decl("_S3", pkg));
693 }
694
695 if (!pm->s4_disabled) {
696 pkg = aml_package(4);
697 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */
698 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
699 aml_append(pkg, aml_int(pm->s4_val));
700 aml_append(pkg, aml_int(0)); /* reserved */
701 aml_append(pkg, aml_int(0)); /* reserved */
702 aml_append(scope, aml_name_decl("_S4", pkg));
703 }
704
705 pkg = aml_package(4);
706 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */
707 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
708 aml_append(pkg, aml_int(0)); /* reserved */
709 aml_append(pkg, aml_int(0)); /* reserved */
710 aml_append(scope, aml_name_decl("_S5", pkg));
711 aml_append(ssdt, scope);
712
713 if (misc->applesmc_io_base) {
714 scope = aml_scope("\\_SB.PCI0.ISA");
715 dev = aml_device("SMC");
716
717 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
718 /* device present, functioning, decoding, not shown in UI */
719 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
720
721 crs = aml_resource_template();
722 aml_append(crs,
723 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base,
724 0x01, APPLESMC_MAX_DATA_LENGTH)
725 );
726 aml_append(crs, aml_irq_no_flags(6));
727 aml_append(dev, aml_name_decl("_CRS", crs));
728
729 aml_append(scope, dev);
730 aml_append(ssdt, scope);
731 }
732
733 if (misc->pvpanic_port) {
734 scope = aml_scope("\\_SB.PCI0.ISA");
735
736 dev = aml_device("PEVT");
737 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
738
739 crs = aml_resource_template();
740 aml_append(crs,
741 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1)
742 );
743 aml_append(dev, aml_name_decl("_CRS", crs));
744
745 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO,
746 misc->pvpanic_port, 1));
747 field = aml_field("PEOR", AML_BYTE_ACC, AML_PRESERVE);
748 aml_append(field, aml_named_field("PEPT", 8));
749 aml_append(dev, field);
750
751 /* device present, functioning, decoding, not shown in UI */
752 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
753
754 method = aml_method("RDPT", 0);
755 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0)));
756 aml_append(method, aml_return(aml_local(0)));
757 aml_append(dev, method);
758
759 method = aml_method("WRPT", 1);
760 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT")));
761 aml_append(dev, method);
762
763 aml_append(scope, dev);
764 aml_append(ssdt, scope);
765 }
766
767 sb_scope = aml_scope("\\_SB");
768 {
769 /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
770 dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE));
771 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
772 aml_append(dev,
773 aml_name_decl("_UID", aml_string("CPU Hotplug resources"))
774 );
775 /* device present, functioning, decoding, not shown in UI */
776 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
777 crs = aml_resource_template();
778 aml_append(crs,
779 aml_io(AML_DECODE16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1,
780 pm->cpu_hp_io_len)
781 );
782 aml_append(dev, aml_name_decl("_CRS", crs));
783 aml_append(sb_scope, dev);
784 /* declare CPU hotplug MMIO region and PRS field to access it */
785 aml_append(sb_scope, aml_operation_region(
786 "PRST", AML_SYSTEM_IO, pm->cpu_hp_io_base, pm->cpu_hp_io_len));
787 field = aml_field("PRST", AML_BYTE_ACC, AML_PRESERVE);
788 aml_append(field, aml_named_field("PRS", 256));
789 aml_append(sb_scope, field);
790
791 /* build Processor object for each processor */
792 for (i = 0; i < acpi_cpus; i++) {
793 dev = aml_processor(i, 0, 0, "CP%.02X", i);
794
795 method = aml_method("_MAT", 0);
796 aml_append(method, aml_return(aml_call1("CPMA", aml_int(i))));
797 aml_append(dev, method);
798
799 method = aml_method("_STA", 0);
800 aml_append(method, aml_return(aml_call1("CPST", aml_int(i))));
801 aml_append(dev, method);
802
803 method = aml_method("_EJ0", 1);
804 aml_append(method,
805 aml_return(aml_call2("CPEJ", aml_int(i), aml_arg(0)))
806 );
807 aml_append(dev, method);
808
809 aml_append(sb_scope, dev);
810 }
811
812 /* build this code:
813 * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
814 */
815 /* Arg0 = Processor ID = APIC ID */
816 method = aml_method("NTFY", 2);
817 for (i = 0; i < acpi_cpus; i++) {
818 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
819 aml_append(ifctx,
820 aml_notify(aml_name("CP%.02X", i), aml_arg(1))
821 );
822 aml_append(method, ifctx);
823 }
824 aml_append(sb_scope, method);
825
826 /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
827 *
828 * Note: The ability to create variable-sized packages was first
829 * introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages
830 * ith up to 255 elements. Windows guests up to win2k8 fail when
831 * VarPackageOp is used.
832 */
833 pkg = acpi_cpus <= 255 ? aml_package(acpi_cpus) :
834 aml_varpackage(acpi_cpus);
835
836 for (i = 0; i < acpi_cpus; i++) {
837 uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
838 aml_append(pkg, aml_int(b));
839 }
840 aml_append(sb_scope, aml_name_decl("CPON", pkg));
841
842 /* build memory devices */
843 assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
844 scope = aml_scope("\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE));
845 aml_append(scope,
846 aml_name_decl(stringify(MEMORY_SLOTS_NUMBER), aml_int(nr_mem))
847 );
848
849 crs = aml_resource_template();
850 aml_append(crs,
851 aml_io(AML_DECODE16, pm->mem_hp_io_base, pm->mem_hp_io_base, 0,
852 pm->mem_hp_io_len)
853 );
854 aml_append(scope, aml_name_decl("_CRS", crs));
855
856 aml_append(scope, aml_operation_region(
857 stringify(MEMORY_HOTPLUG_IO_REGION), AML_SYSTEM_IO,
858 pm->mem_hp_io_base, pm->mem_hp_io_len)
859 );
860
861 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_DWORD_ACC,
862 AML_PRESERVE);
863 aml_append(field, /* read only */
864 aml_named_field(stringify(MEMORY_SLOT_ADDR_LOW), 32));
865 aml_append(field, /* read only */
866 aml_named_field(stringify(MEMORY_SLOT_ADDR_HIGH), 32));
867 aml_append(field, /* read only */
868 aml_named_field(stringify(MEMORY_SLOT_SIZE_LOW), 32));
869 aml_append(field, /* read only */
870 aml_named_field(stringify(MEMORY_SLOT_SIZE_HIGH), 32));
871 aml_append(field, /* read only */
872 aml_named_field(stringify(MEMORY_SLOT_PROXIMITY), 32));
873 aml_append(scope, field);
874
875 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_BYTE_ACC,
876 AML_WRITE_AS_ZEROS);
877 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
878 aml_append(field, /* 1 if enabled, read only */
879 aml_named_field(stringify(MEMORY_SLOT_ENABLED), 1));
880 aml_append(field,
881 /*(read) 1 if has a insert event. (write) 1 to clear event */
882 aml_named_field(stringify(MEMORY_SLOT_INSERT_EVENT), 1));
883 aml_append(field,
884 /* (read) 1 if has a remove event. (write) 1 to clear event */
885 aml_named_field(stringify(MEMORY_SLOT_REMOVE_EVENT), 1));
886 aml_append(field,
887 /* initiates device eject, write only */
888 aml_named_field(stringify(MEMORY_SLOT_EJECT), 1));
889 aml_append(scope, field);
890
891 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_DWORD_ACC,
892 AML_PRESERVE);
893 aml_append(field, /* DIMM selector, write only */
894 aml_named_field(stringify(MEMORY_SLOT_SLECTOR), 32));
895 aml_append(field, /* _OST event code, write only */
896 aml_named_field(stringify(MEMORY_SLOT_OST_EVENT), 32));
897 aml_append(field, /* _OST status code, write only */
898 aml_named_field(stringify(MEMORY_SLOT_OST_STATUS), 32));
899 aml_append(scope, field);
900
901 aml_append(sb_scope, scope);
902
903 for (i = 0; i < nr_mem; i++) {
904 #define BASEPATH "\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE) "."
905 const char *s;
906
907 dev = aml_device("MP%02X", i);
908 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i)));
909 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
910
911 method = aml_method("_CRS", 0);
912 s = BASEPATH stringify(MEMORY_SLOT_CRS_METHOD);
913 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
914 aml_append(dev, method);
915
916 method = aml_method("_STA", 0);
917 s = BASEPATH stringify(MEMORY_SLOT_STATUS_METHOD);
918 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
919 aml_append(dev, method);
920
921 method = aml_method("_PXM", 0);
922 s = BASEPATH stringify(MEMORY_SLOT_PROXIMITY_METHOD);
923 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
924 aml_append(dev, method);
925
926 method = aml_method("_OST", 3);
927 s = BASEPATH stringify(MEMORY_SLOT_OST_METHOD);
928 aml_append(method, aml_return(aml_call4(
929 s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2)
930 )));
931 aml_append(dev, method);
932
933 method = aml_method("_EJ0", 1);
934 s = BASEPATH stringify(MEMORY_SLOT_EJECT_METHOD);
935 aml_append(method, aml_return(aml_call2(
936 s, aml_name("_UID"), aml_arg(0))));
937 aml_append(dev, method);
938
939 aml_append(sb_scope, dev);
940 }
941
942 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
943 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... }
944 */
945 method = aml_method(stringify(MEMORY_SLOT_NOTIFY_METHOD), 2);
946 for (i = 0; i < nr_mem; i++) {
947 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
948 aml_append(ifctx,
949 aml_notify(aml_name("MP%.02X", i), aml_arg(1))
950 );
951 aml_append(method, ifctx);
952 }
953 aml_append(sb_scope, method);
954
955 {
956 Object *pci_host;
957 PCIBus *bus = NULL;
958 bool ambiguous;
959
960 pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
961 if (!ambiguous && pci_host) {
962 bus = PCI_HOST_BRIDGE(pci_host)->bus;
963 }
964
965 if (bus) {
966 Aml *scope = aml_scope("PCI0");
967 /* Scan all PCI buses. Generate tables to support hotplug. */
968 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
969 aml_append(sb_scope, scope);
970 }
971 }
972 aml_append(ssdt, sb_scope);
973 }
974
975 /* copy AML table into ACPI tables blob and patch header there */
976 g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len);
977 build_header(linker, table_data,
978 (void *)(table_data->data + table_data->len - ssdt->buf->len),
979 "SSDT", ssdt->buf->len, 1);
980 free_aml_allocator();
981 }
982
983 static void
984 build_hpet(GArray *table_data, GArray *linker)
985 {
986 Acpi20Hpet *hpet;
987
988 hpet = acpi_data_push(table_data, sizeof(*hpet));
989 /* Note timer_block_id value must be kept in sync with value advertised by
990 * emulated hpet
991 */
992 hpet->timer_block_id = cpu_to_le32(0x8086a201);
993 hpet->addr.address = cpu_to_le64(HPET_BASE);
994 build_header(linker, table_data,
995 (void *)hpet, "HPET", sizeof(*hpet), 1);
996 }
997
998 static void
999 build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog)
1000 {
1001 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
1002 uint64_t log_area_start_address = acpi_data_len(tcpalog);
1003
1004 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
1005 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
1006 tcpa->log_area_start_address = cpu_to_le64(log_area_start_address);
1007
1008 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, 1,
1009 false /* high memory */);
1010
1011 /* log area start address to be filled by Guest linker */
1012 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
1013 ACPI_BUILD_TPMLOG_FILE,
1014 table_data, &tcpa->log_area_start_address,
1015 sizeof(tcpa->log_area_start_address));
1016
1017 build_header(linker, table_data,
1018 (void *)tcpa, "TCPA", sizeof(*tcpa), 2);
1019
1020 acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE);
1021 }
1022
1023 static void
1024 build_tpm_ssdt(GArray *table_data, GArray *linker)
1025 {
1026 void *tpm_ptr;
1027
1028 tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
1029 memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
1030 }
1031
1032 typedef enum {
1033 MEM_AFFINITY_NOFLAGS = 0,
1034 MEM_AFFINITY_ENABLED = (1 << 0),
1035 MEM_AFFINITY_HOTPLUGGABLE = (1 << 1),
1036 MEM_AFFINITY_NON_VOLATILE = (1 << 2),
1037 } MemoryAffinityFlags;
1038
1039 static void
1040 acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
1041 uint64_t len, int node, MemoryAffinityFlags flags)
1042 {
1043 numamem->type = ACPI_SRAT_MEMORY;
1044 numamem->length = sizeof(*numamem);
1045 memset(numamem->proximity, 0, 4);
1046 numamem->proximity[0] = node;
1047 numamem->flags = cpu_to_le32(flags);
1048 numamem->base_addr = cpu_to_le64(base);
1049 numamem->range_length = cpu_to_le64(len);
1050 }
1051
1052 static void
1053 build_srat(GArray *table_data, GArray *linker, PcGuestInfo *guest_info)
1054 {
1055 AcpiSystemResourceAffinityTable *srat;
1056 AcpiSratProcessorAffinity *core;
1057 AcpiSratMemoryAffinity *numamem;
1058
1059 int i;
1060 uint64_t curnode;
1061 int srat_start, numa_start, slots;
1062 uint64_t mem_len, mem_base, next_base;
1063 PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
1064 ram_addr_t hotplugabble_address_space_size =
1065 object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE,
1066 NULL);
1067
1068 srat_start = table_data->len;
1069
1070 srat = acpi_data_push(table_data, sizeof *srat);
1071 srat->reserved1 = cpu_to_le32(1);
1072 core = (void *)(srat + 1);
1073
1074 for (i = 0; i < guest_info->apic_id_limit; ++i) {
1075 core = acpi_data_push(table_data, sizeof *core);
1076 core->type = ACPI_SRAT_PROCESSOR;
1077 core->length = sizeof(*core);
1078 core->local_apic_id = i;
1079 curnode = guest_info->node_cpu[i];
1080 core->proximity_lo = curnode;
1081 memset(core->proximity_hi, 0, 3);
1082 core->local_sapic_eid = 0;
1083 core->flags = cpu_to_le32(1);
1084 }
1085
1086
1087 /* the memory map is a bit tricky, it contains at least one hole
1088 * from 640k-1M and possibly another one from 3.5G-4G.
1089 */
1090 next_base = 0;
1091 numa_start = table_data->len;
1092
1093 numamem = acpi_data_push(table_data, sizeof *numamem);
1094 acpi_build_srat_memory(numamem, 0, 640*1024, 0, MEM_AFFINITY_ENABLED);
1095 next_base = 1024 * 1024;
1096 for (i = 1; i < guest_info->numa_nodes + 1; ++i) {
1097 mem_base = next_base;
1098 mem_len = guest_info->node_mem[i - 1];
1099 if (i == 1) {
1100 mem_len -= 1024 * 1024;
1101 }
1102 next_base = mem_base + mem_len;
1103
1104 /* Cut out the ACPI_PCI hole */
1105 if (mem_base <= guest_info->ram_size_below_4g &&
1106 next_base > guest_info->ram_size_below_4g) {
1107 mem_len -= next_base - guest_info->ram_size_below_4g;
1108 if (mem_len > 0) {
1109 numamem = acpi_data_push(table_data, sizeof *numamem);
1110 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
1111 MEM_AFFINITY_ENABLED);
1112 }
1113 mem_base = 1ULL << 32;
1114 mem_len = next_base - guest_info->ram_size_below_4g;
1115 next_base += (1ULL << 32) - guest_info->ram_size_below_4g;
1116 }
1117 numamem = acpi_data_push(table_data, sizeof *numamem);
1118 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
1119 MEM_AFFINITY_ENABLED);
1120 }
1121 slots = (table_data->len - numa_start) / sizeof *numamem;
1122 for (; slots < guest_info->numa_nodes + 2; slots++) {
1123 numamem = acpi_data_push(table_data, sizeof *numamem);
1124 acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
1125 }
1126
1127 /*
1128 * Entry is required for Windows to enable memory hotplug in OS.
1129 * Memory devices may override proximity set by this entry,
1130 * providing _PXM method if necessary.
1131 */
1132 if (hotplugabble_address_space_size) {
1133 numamem = acpi_data_push(table_data, sizeof *numamem);
1134 acpi_build_srat_memory(numamem, pcms->hotplug_memory_base,
1135 hotplugabble_address_space_size, 0,
1136 MEM_AFFINITY_HOTPLUGGABLE |
1137 MEM_AFFINITY_ENABLED);
1138 }
1139
1140 build_header(linker, table_data,
1141 (void *)(table_data->data + srat_start),
1142 "SRAT",
1143 table_data->len - srat_start, 1);
1144 }
1145
1146 static void
1147 build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
1148 {
1149 AcpiTableMcfg *mcfg;
1150 const char *sig;
1151 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
1152
1153 mcfg = acpi_data_push(table_data, len);
1154 mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base);
1155 /* Only a single allocation so no need to play with segments */
1156 mcfg->allocation[0].pci_segment = cpu_to_le16(0);
1157 mcfg->allocation[0].start_bus_number = 0;
1158 mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1);
1159
1160 /* MCFG is used for ECAM which can be enabled or disabled by guest.
1161 * To avoid table size changes (which create migration issues),
1162 * always create the table even if there are no allocations,
1163 * but set the signature to a reserved value in this case.
1164 * ACPI spec requires OSPMs to ignore such tables.
1165 */
1166 if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) {
1167 /* Reserved signature: ignored by OSPM */
1168 sig = "QEMU";
1169 } else {
1170 sig = "MCFG";
1171 }
1172 build_header(linker, table_data, (void *)mcfg, sig, len, 1);
1173 }
1174
1175 static void
1176 build_dmar_q35(GArray *table_data, GArray *linker)
1177 {
1178 int dmar_start = table_data->len;
1179
1180 AcpiTableDmar *dmar;
1181 AcpiDmarHardwareUnit *drhd;
1182
1183 dmar = acpi_data_push(table_data, sizeof(*dmar));
1184 dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
1185 dmar->flags = 0; /* No intr_remap for now */
1186
1187 /* DMAR Remapping Hardware Unit Definition structure */
1188 drhd = acpi_data_push(table_data, sizeof(*drhd));
1189 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
1190 drhd->length = cpu_to_le16(sizeof(*drhd)); /* No device scope now */
1191 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
1192 drhd->pci_segment = cpu_to_le16(0);
1193 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
1194
1195 build_header(linker, table_data, (void *)(table_data->data + dmar_start),
1196 "DMAR", table_data->len - dmar_start, 1);
1197 }
1198
1199 static void
1200 build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc)
1201 {
1202 AcpiTableHeader *dsdt;
1203
1204 assert(misc->dsdt_code && misc->dsdt_size);
1205
1206 dsdt = acpi_data_push(table_data, misc->dsdt_size);
1207 memcpy(dsdt, misc->dsdt_code, misc->dsdt_size);
1208
1209 memset(dsdt, 0, sizeof *dsdt);
1210 build_header(linker, table_data, dsdt, "DSDT",
1211 misc->dsdt_size, 1);
1212 }
1213
1214 static GArray *
1215 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
1216 {
1217 AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
1218
1219 bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,
1220 true /* fseg memory */);
1221
1222 memcpy(&rsdp->signature, "RSD PTR ", 8);
1223 memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
1224 rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
1225 /* Address to be filled by Guest linker */
1226 bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
1227 ACPI_BUILD_TABLE_FILE,
1228 rsdp_table, &rsdp->rsdt_physical_address,
1229 sizeof rsdp->rsdt_physical_address);
1230 rsdp->checksum = 0;
1231 /* Checksum to be filled by Guest linker */
1232 bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
1233 rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);
1234
1235 return rsdp_table;
1236 }
1237
1238 typedef
1239 struct AcpiBuildState {
1240 /* Copy of table in RAM (for patching). */
1241 MemoryRegion *table_mr;
1242 /* Is table patched? */
1243 uint8_t patched;
1244 PcGuestInfo *guest_info;
1245 void *rsdp;
1246 MemoryRegion *rsdp_mr;
1247 MemoryRegion *linker_mr;
1248 } AcpiBuildState;
1249
1250 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
1251 {
1252 Object *pci_host;
1253 QObject *o;
1254 bool ambiguous;
1255
1256 pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
1257 g_assert(!ambiguous);
1258 g_assert(pci_host);
1259
1260 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
1261 if (!o) {
1262 return false;
1263 }
1264 mcfg->mcfg_base = qint_get_int(qobject_to_qint(o));
1265 qobject_decref(o);
1266
1267 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
1268 assert(o);
1269 mcfg->mcfg_size = qint_get_int(qobject_to_qint(o));
1270 qobject_decref(o);
1271 return true;
1272 }
1273
1274 static bool acpi_has_iommu(void)
1275 {
1276 bool ambiguous;
1277 Object *intel_iommu;
1278
1279 intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
1280 &ambiguous);
1281 return intel_iommu && !ambiguous;
1282 }
1283
1284 static
1285 void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
1286 {
1287 GArray *table_offsets;
1288 unsigned facs, ssdt, dsdt, rsdt;
1289 AcpiCpuInfo cpu;
1290 AcpiPmInfo pm;
1291 AcpiMiscInfo misc;
1292 AcpiMcfgInfo mcfg;
1293 PcPciInfo pci;
1294 uint8_t *u;
1295 size_t aml_len = 0;
1296 GArray *tables_blob = tables->table_data;
1297
1298 acpi_get_cpu_info(&cpu);
1299 acpi_get_pm_info(&pm);
1300 acpi_get_dsdt(&misc);
1301 acpi_get_misc_info(&misc);
1302 acpi_get_pci_info(&pci);
1303
1304 table_offsets = g_array_new(false, true /* clear */,
1305 sizeof(uint32_t));
1306 ACPI_BUILD_DPRINTF("init ACPI tables\n");
1307
1308 bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
1309 64 /* Ensure FACS is aligned */,
1310 false /* high memory */);
1311
1312 /*
1313 * FACS is pointed to by FADT.
1314 * We place it first since it's the only table that has alignment
1315 * requirements.
1316 */
1317 facs = tables_blob->len;
1318 build_facs(tables_blob, tables->linker, guest_info);
1319
1320 /* DSDT is pointed to by FADT */
1321 dsdt = tables_blob->len;
1322 build_dsdt(tables_blob, tables->linker, &misc);
1323
1324 /* Count the size of the DSDT and SSDT, we will need it for legacy
1325 * sizing of ACPI tables.
1326 */
1327 aml_len += tables_blob->len - dsdt;
1328
1329 /* ACPI tables pointed to by RSDT */
1330 acpi_add_table(table_offsets, tables_blob);
1331 build_fadt(tables_blob, tables->linker, &pm, facs, dsdt);
1332
1333 ssdt = tables_blob->len;
1334 acpi_add_table(table_offsets, tables_blob);
1335 build_ssdt(tables_blob, tables->linker, &cpu, &pm, &misc, &pci,
1336 guest_info);
1337 aml_len += tables_blob->len - ssdt;
1338
1339 acpi_add_table(table_offsets, tables_blob);
1340 build_madt(tables_blob, tables->linker, &cpu, guest_info);
1341
1342 if (misc.has_hpet) {
1343 acpi_add_table(table_offsets, tables_blob);
1344 build_hpet(tables_blob, tables->linker);
1345 }
1346 if (misc.has_tpm) {
1347 acpi_add_table(table_offsets, tables_blob);
1348 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
1349
1350 acpi_add_table(table_offsets, tables_blob);
1351 build_tpm_ssdt(tables_blob, tables->linker);
1352 }
1353 if (guest_info->numa_nodes) {
1354 acpi_add_table(table_offsets, tables_blob);
1355 build_srat(tables_blob, tables->linker, guest_info);
1356 }
1357 if (acpi_get_mcfg(&mcfg)) {
1358 acpi_add_table(table_offsets, tables_blob);
1359 build_mcfg_q35(tables_blob, tables->linker, &mcfg);
1360 }
1361 if (acpi_has_iommu()) {
1362 acpi_add_table(table_offsets, tables_blob);
1363 build_dmar_q35(tables_blob, tables->linker);
1364 }
1365
1366 /* Add tables supplied by user (if any) */
1367 for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
1368 unsigned len = acpi_table_len(u);
1369
1370 acpi_add_table(table_offsets, tables_blob);
1371 g_array_append_vals(tables_blob, u, len);
1372 }
1373
1374 /* RSDT is pointed to by RSDP */
1375 rsdt = tables_blob->len;
1376 build_rsdt(tables_blob, tables->linker, table_offsets);
1377
1378 /* RSDP is in FSEG memory, so allocate it separately */
1379 build_rsdp(tables->rsdp, tables->linker, rsdt);
1380
1381 /* We'll expose it all to Guest so we want to reduce
1382 * chance of size changes.
1383 *
1384 * We used to align the tables to 4k, but of course this would
1385 * too simple to be enough. 4k turned out to be too small an
1386 * alignment very soon, and in fact it is almost impossible to
1387 * keep the table size stable for all (max_cpus, max_memory_slots)
1388 * combinations. So the table size is always 64k for pc-i440fx-2.1
1389 * and we give an error if the table grows beyond that limit.
1390 *
1391 * We still have the problem of migrating from "-M pc-i440fx-2.0". For
1392 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
1393 * than 2.0 and we can always pad the smaller tables with zeros. We can
1394 * then use the exact size of the 2.0 tables.
1395 *
1396 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
1397 */
1398 if (guest_info->legacy_acpi_table_size) {
1399 /* Subtracting aml_len gives the size of fixed tables. Then add the
1400 * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
1401 */
1402 int legacy_aml_len =
1403 guest_info->legacy_acpi_table_size +
1404 ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
1405 int legacy_table_size =
1406 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
1407 ACPI_BUILD_ALIGN_SIZE);
1408 if (tables_blob->len > legacy_table_size) {
1409 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
1410 error_report("Warning: migration may not work.");
1411 }
1412 g_array_set_size(tables_blob, legacy_table_size);
1413 } else {
1414 /* Make sure we have a buffer in case we need to resize the tables. */
1415 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
1416 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
1417 error_report("Warning: ACPI tables are larger than 64k.");
1418 error_report("Warning: migration may not work.");
1419 error_report("Warning: please remove CPUs, NUMA nodes, "
1420 "memory slots or PCI bridges.");
1421 }
1422 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
1423 }
1424
1425 acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE);
1426
1427 /* Cleanup memory that's no longer used. */
1428 g_array_free(table_offsets, true);
1429 }
1430
1431 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
1432 {
1433 uint32_t size = acpi_data_len(data);
1434
1435 /* Make sure RAM size is correct - in case it got changed e.g. by migration */
1436 memory_region_ram_resize(mr, size, &error_abort);
1437
1438 memcpy(memory_region_get_ram_ptr(mr), data->data, size);
1439 memory_region_set_dirty(mr, 0, size);
1440 }
1441
1442 static void acpi_build_update(void *build_opaque, uint32_t offset)
1443 {
1444 AcpiBuildState *build_state = build_opaque;
1445 AcpiBuildTables tables;
1446
1447 /* No state to update or already patched? Nothing to do. */
1448 if (!build_state || build_state->patched) {
1449 return;
1450 }
1451 build_state->patched = 1;
1452
1453 acpi_build_tables_init(&tables);
1454
1455 acpi_build(build_state->guest_info, &tables);
1456
1457 acpi_ram_update(build_state->table_mr, tables.table_data);
1458
1459 if (build_state->rsdp) {
1460 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp));
1461 } else {
1462 acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
1463 }
1464
1465 acpi_ram_update(build_state->linker_mr, tables.linker);
1466 acpi_build_tables_cleanup(&tables, true);
1467 }
1468
1469 static void acpi_build_reset(void *build_opaque)
1470 {
1471 AcpiBuildState *build_state = build_opaque;
1472 build_state->patched = 0;
1473 }
1474
1475 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
1476 GArray *blob, const char *name,
1477 uint64_t max_size)
1478 {
1479 return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
1480 name, acpi_build_update, build_state);
1481 }
1482
1483 static const VMStateDescription vmstate_acpi_build = {
1484 .name = "acpi_build",
1485 .version_id = 1,
1486 .minimum_version_id = 1,
1487 .fields = (VMStateField[]) {
1488 VMSTATE_UINT8(patched, AcpiBuildState),
1489 VMSTATE_END_OF_LIST()
1490 },
1491 };
1492
1493 void acpi_setup(PcGuestInfo *guest_info)
1494 {
1495 AcpiBuildTables tables;
1496 AcpiBuildState *build_state;
1497
1498 if (!guest_info->fw_cfg) {
1499 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
1500 return;
1501 }
1502
1503 if (!guest_info->has_acpi_build) {
1504 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
1505 return;
1506 }
1507
1508 if (!acpi_enabled) {
1509 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
1510 return;
1511 }
1512
1513 build_state = g_malloc0(sizeof *build_state);
1514
1515 build_state->guest_info = guest_info;
1516
1517 acpi_set_pci_info();
1518
1519 acpi_build_tables_init(&tables);
1520 acpi_build(build_state->guest_info, &tables);
1521
1522 /* Now expose it all to Guest */
1523 build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
1524 ACPI_BUILD_TABLE_FILE,
1525 ACPI_BUILD_TABLE_MAX_SIZE);
1526 assert(build_state->table_mr != NULL);
1527
1528 build_state->linker_mr =
1529 acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
1530
1531 fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
1532 tables.tcpalog->data, acpi_data_len(tables.tcpalog));
1533
1534 if (!guest_info->rsdp_in_ram) {
1535 /*
1536 * Keep for compatibility with old machine types.
1537 * Though RSDP is small, its contents isn't immutable, so
1538 * we'll update it along with the rest of tables on guest access.
1539 */
1540 uint32_t rsdp_size = acpi_data_len(tables.rsdp);
1541
1542 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size);
1543 fw_cfg_add_file_callback(guest_info->fw_cfg, ACPI_BUILD_RSDP_FILE,
1544 acpi_build_update, build_state,
1545 build_state->rsdp, rsdp_size);
1546 build_state->rsdp_mr = NULL;
1547 } else {
1548 build_state->rsdp = NULL;
1549 build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
1550 ACPI_BUILD_RSDP_FILE, 0);
1551 }
1552
1553 qemu_register_reset(acpi_build_reset, build_state);
1554 acpi_build_reset(build_state);
1555 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state);
1556
1557 /* Cleanup tables but don't free the memory: we track it
1558 * in build_state.
1559 */
1560 acpi_build_tables_cleanup(&tables, false);
1561 }
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