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block/vpc: update comments to be compliant w/coding guidelines
[qemu.git] / hw / i386 / acpi-build.c
blob64770034ff4f50e3506a2dbdf50b08303acf83ab
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 "qemu/osdep.h"
24 #include "qapi/error.h"
25 #include "acpi-build.h"
26 #include <glib.h>
27 #include "qemu-common.h"
28 #include "qemu/bitmap.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/block/fdc.h"
42 #include "hw/acpi/memory_hotplug.h"
43 #include "sysemu/tpm.h"
44 #include "hw/acpi/tpm.h"
45 #include "sysemu/tpm_backend.h"
46 #include "hw/timer/mc146818rtc_regs.h"
47
48 /* Supported chipsets: */
49 #include "hw/acpi/piix4.h"
50 #include "hw/acpi/pcihp.h"
51 #include "hw/i386/ich9.h"
52 #include "hw/pci/pci_bus.h"
53 #include "hw/pci-host/q35.h"
54 #include "hw/i386/intel_iommu.h"
55 #include "hw/timer/hpet.h"
56
57 #include "hw/acpi/aml-build.h"
58
59 #include "qapi/qmp/qint.h"
60 #include "qom/qom-qobject.h"
61
62 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
63 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
64 * a little bit, there should be plenty of free space since the DSDT
65 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
66 */
67 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
68 #define ACPI_BUILD_ALIGN_SIZE 0x1000
69
70 #define ACPI_BUILD_TABLE_SIZE 0x20000
71
72 /* #define DEBUG_ACPI_BUILD */
73 #ifdef DEBUG_ACPI_BUILD
74 #define ACPI_BUILD_DPRINTF(fmt, ...) \
75 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
76 #else
77 #define ACPI_BUILD_DPRINTF(fmt, ...)
78 #endif
79
80 typedef struct AcpiMcfgInfo {
81 uint64_t mcfg_base;
82 uint32_t mcfg_size;
83 } AcpiMcfgInfo;
84
85 typedef struct AcpiPmInfo {
86 bool s3_disabled;
87 bool s4_disabled;
88 bool pcihp_bridge_en;
89 uint8_t s4_val;
90 uint16_t sci_int;
91 uint8_t acpi_enable_cmd;
92 uint8_t acpi_disable_cmd;
93 uint32_t gpe0_blk;
94 uint32_t gpe0_blk_len;
95 uint32_t io_base;
96 uint16_t cpu_hp_io_base;
97 uint16_t cpu_hp_io_len;
98 uint16_t mem_hp_io_base;
99 uint16_t mem_hp_io_len;
100 uint16_t pcihp_io_base;
101 uint16_t pcihp_io_len;
102 } AcpiPmInfo;
103
104 typedef struct AcpiMiscInfo {
105 bool is_piix4;
106 bool has_hpet;
107 TPMVersion tpm_version;
108 const unsigned char *dsdt_code;
109 unsigned dsdt_size;
110 uint16_t pvpanic_port;
111 uint16_t applesmc_io_base;
112 } AcpiMiscInfo;
113
114 typedef struct AcpiBuildPciBusHotplugState {
115 GArray *device_table;
116 GArray *notify_table;
117 struct AcpiBuildPciBusHotplugState *parent;
118 bool pcihp_bridge_en;
119 } AcpiBuildPciBusHotplugState;
120
121 static void acpi_get_pm_info(AcpiPmInfo *pm)
122 {
123 Object *piix = piix4_pm_find();
124 Object *lpc = ich9_lpc_find();
125 Object *obj = NULL;
126 QObject *o;
127
128 pm->cpu_hp_io_base = 0;
129 pm->pcihp_io_base = 0;
130 pm->pcihp_io_len = 0;
131 if (piix) {
132 obj = piix;
133 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE;
134 pm->pcihp_io_base =
135 object_property_get_int(obj, ACPI_PCIHP_IO_BASE_PROP, NULL);
136 pm->pcihp_io_len =
137 object_property_get_int(obj, ACPI_PCIHP_IO_LEN_PROP, NULL);
138 }
139 if (lpc) {
140 obj = lpc;
141 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE;
142 }
143 assert(obj);
144
145 pm->cpu_hp_io_len = ACPI_GPE_PROC_LEN;
146 pm->mem_hp_io_base = ACPI_MEMORY_HOTPLUG_BASE;
147 pm->mem_hp_io_len = ACPI_MEMORY_HOTPLUG_IO_LEN;
148
149 /* Fill in optional s3/s4 related properties */
150 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
151 if (o) {
152 pm->s3_disabled = qint_get_int(qobject_to_qint(o));
153 } else {
154 pm->s3_disabled = false;
155 }
156 qobject_decref(o);
157 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
158 if (o) {
159 pm->s4_disabled = qint_get_int(qobject_to_qint(o));
160 } else {
161 pm->s4_disabled = false;
162 }
163 qobject_decref(o);
164 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
165 if (o) {
166 pm->s4_val = qint_get_int(qobject_to_qint(o));
167 } else {
168 pm->s4_val = false;
169 }
170 qobject_decref(o);
171
172 /* Fill in mandatory properties */
173 pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL);
174
175 pm->acpi_enable_cmd = object_property_get_int(obj,
176 ACPI_PM_PROP_ACPI_ENABLE_CMD,
177 NULL);
178 pm->acpi_disable_cmd = object_property_get_int(obj,
179 ACPI_PM_PROP_ACPI_DISABLE_CMD,
180 NULL);
181 pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE,
182 NULL);
183 pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK,
184 NULL);
185 pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
186 NULL);
187 pm->pcihp_bridge_en =
188 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
189 NULL);
190 }
191
192 static void acpi_get_misc_info(AcpiMiscInfo *info)
193 {
194 Object *piix = piix4_pm_find();
195 Object *lpc = ich9_lpc_find();
196 assert(!!piix != !!lpc);
197
198 if (piix) {
199 info->is_piix4 = true;
200 }
201 if (lpc) {
202 info->is_piix4 = false;
203 }
204
205 info->has_hpet = hpet_find();
206 info->tpm_version = tpm_get_version();
207 info->pvpanic_port = pvpanic_port();
208 info->applesmc_io_base = applesmc_port();
209 }
210
211 /*
212 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE.
213 * On i386 arch we only have two pci hosts, so we can look only for them.
214 */
215 static Object *acpi_get_i386_pci_host(void)
216 {
217 PCIHostState *host;
218
219 host = OBJECT_CHECK(PCIHostState,
220 object_resolve_path("/machine/i440fx", NULL),
221 TYPE_PCI_HOST_BRIDGE);
222 if (!host) {
223 host = OBJECT_CHECK(PCIHostState,
224 object_resolve_path("/machine/q35", NULL),
225 TYPE_PCI_HOST_BRIDGE);
226 }
227
228 return OBJECT(host);
229 }
230
231 static void acpi_get_pci_info(PcPciInfo *info)
232 {
233 Object *pci_host;
234
235
236 pci_host = acpi_get_i386_pci_host();
237 g_assert(pci_host);
238
239 info->w32.begin = object_property_get_int(pci_host,
240 PCI_HOST_PROP_PCI_HOLE_START,
241 NULL);
242 info->w32.end = object_property_get_int(pci_host,
243 PCI_HOST_PROP_PCI_HOLE_END,
244 NULL);
245 info->w64.begin = object_property_get_int(pci_host,
246 PCI_HOST_PROP_PCI_HOLE64_START,
247 NULL);
248 info->w64.end = object_property_get_int(pci_host,
249 PCI_HOST_PROP_PCI_HOLE64_END,
250 NULL);
251 }
252
253 #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */
254
255 static void acpi_align_size(GArray *blob, unsigned align)
256 {
257 /* Align size to multiple of given size. This reduces the chance
258 * we need to change size in the future (breaking cross version migration).
259 */
260 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
261 }
262
263 /* FACS */
264 static void
265 build_facs(GArray *table_data, GArray *linker)
266 {
267 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
268 memcpy(&facs->signature, "FACS", 4);
269 facs->length = cpu_to_le32(sizeof(*facs));
270 }
271
272 /* Load chipset information in FADT */
273 static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm)
274 {
275 fadt->model = 1;
276 fadt->reserved1 = 0;
277 fadt->sci_int = cpu_to_le16(pm->sci_int);
278 fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD);
279 fadt->acpi_enable = pm->acpi_enable_cmd;
280 fadt->acpi_disable = pm->acpi_disable_cmd;
281 /* EVT, CNT, TMR offset matches hw/acpi/core.c */
282 fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base);
283 fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04);
284 fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08);
285 fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk);
286 /* EVT, CNT, TMR length matches hw/acpi/core.c */
287 fadt->pm1_evt_len = 4;
288 fadt->pm1_cnt_len = 2;
289 fadt->pm_tmr_len = 4;
290 fadt->gpe0_blk_len = pm->gpe0_blk_len;
291 fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */
292 fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */
293 fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) |
294 (1 << ACPI_FADT_F_PROC_C1) |
295 (1 << ACPI_FADT_F_SLP_BUTTON) |
296 (1 << ACPI_FADT_F_RTC_S4));
297 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK);
298 /* APIC destination mode ("Flat Logical") has an upper limit of 8 CPUs
299 * For more than 8 CPUs, "Clustered Logical" mode has to be used
300 */
301 if (max_cpus > 8) {
302 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL);
303 }
304 fadt->century = RTC_CENTURY;
305 }
306
307
308 /* FADT */
309 static void
310 build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
311 unsigned facs, unsigned dsdt,
312 const char *oem_id, const char *oem_table_id)
313 {
314 AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
315
316 fadt->firmware_ctrl = cpu_to_le32(facs);
317 /* FACS address to be filled by Guest linker */
318 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
319 ACPI_BUILD_TABLE_FILE,
320 table_data, &fadt->firmware_ctrl,
321 sizeof fadt->firmware_ctrl);
322
323 fadt->dsdt = cpu_to_le32(dsdt);
324 /* DSDT address to be filled by Guest linker */
325 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
326 ACPI_BUILD_TABLE_FILE,
327 table_data, &fadt->dsdt,
328 sizeof fadt->dsdt);
329
330 fadt_setup(fadt, pm);
331
332 build_header(linker, table_data,
333 (void *)fadt, "FACP", sizeof(*fadt), 1, oem_id, oem_table_id);
334 }
335
336 static void
337 build_madt(GArray *table_data, GArray *linker, PCMachineState *pcms)
338 {
339 MachineClass *mc = MACHINE_GET_CLASS(pcms);
340 CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
341 int madt_start = table_data->len;
342
343 AcpiMultipleApicTable *madt;
344 AcpiMadtIoApic *io_apic;
345 AcpiMadtIntsrcovr *intsrcovr;
346 AcpiMadtLocalNmi *local_nmi;
347 int i;
348
349 madt = acpi_data_push(table_data, sizeof *madt);
350 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
351 madt->flags = cpu_to_le32(1);
352
353 for (i = 0; i < apic_ids->len; i++) {
354 AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic);
355 int apic_id = apic_ids->cpus[i].arch_id;
356
357 apic->type = ACPI_APIC_PROCESSOR;
358 apic->length = sizeof(*apic);
359 apic->processor_id = apic_id;
360 apic->local_apic_id = apic_id;
361 if (apic_ids->cpus[i].cpu != NULL) {
362 apic->flags = cpu_to_le32(1);
363 } else {
364 /* ACPI spec says that LAPIC entry for non present
365 * CPU may be omitted from MADT or it must be marked
366 * as disabled. However omitting non present CPU from
367 * MADT breaks hotplug on linux. So possible CPUs
368 * should be put in MADT but kept disabled.
369 */
370 apic->flags = cpu_to_le32(0);
371 }
372 }
373 g_free(apic_ids);
374
375 io_apic = acpi_data_push(table_data, sizeof *io_apic);
376 io_apic->type = ACPI_APIC_IO;
377 io_apic->length = sizeof(*io_apic);
378 #define ACPI_BUILD_IOAPIC_ID 0x0
379 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID;
380 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
381 io_apic->interrupt = cpu_to_le32(0);
382
383 if (pcms->apic_xrupt_override) {
384 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
385 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
386 intsrcovr->length = sizeof(*intsrcovr);
387 intsrcovr->source = 0;
388 intsrcovr->gsi = cpu_to_le32(2);
389 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
390 }
391 for (i = 1; i < 16; i++) {
392 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
393 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
394 /* No need for a INT source override structure. */
395 continue;
396 }
397 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
398 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
399 intsrcovr->length = sizeof(*intsrcovr);
400 intsrcovr->source = i;
401 intsrcovr->gsi = cpu_to_le32(i);
402 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
403 }
404
405 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
406 local_nmi->type = ACPI_APIC_LOCAL_NMI;
407 local_nmi->length = sizeof(*local_nmi);
408 local_nmi->processor_id = 0xff; /* all processors */
409 local_nmi->flags = cpu_to_le16(0);
410 local_nmi->lint = 1; /* ACPI_LINT1 */
411
412 build_header(linker, table_data,
413 (void *)(table_data->data + madt_start), "APIC",
414 table_data->len - madt_start, 1, NULL, NULL);
415 }
416
417 /* Assign BSEL property to all buses. In the future, this can be changed
418 * to only assign to buses that support hotplug.
419 */
420 static void *acpi_set_bsel(PCIBus *bus, void *opaque)
421 {
422 unsigned *bsel_alloc = opaque;
423 unsigned *bus_bsel;
424
425 if (qbus_is_hotpluggable(BUS(bus))) {
426 bus_bsel = g_malloc(sizeof *bus_bsel);
427
428 *bus_bsel = (*bsel_alloc)++;
429 object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
430 bus_bsel, NULL);
431 }
432
433 return bsel_alloc;
434 }
435
436 static void acpi_set_pci_info(void)
437 {
438 PCIBus *bus = find_i440fx(); /* TODO: Q35 support */
439 unsigned bsel_alloc = 0;
440
441 if (bus) {
442 /* Scan all PCI buses. Set property to enable acpi based hotplug. */
443 pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc);
444 }
445 }
446
447 static void build_append_pcihp_notify_entry(Aml *method, int slot)
448 {
449 Aml *if_ctx;
450 int32_t devfn = PCI_DEVFN(slot, 0);
451
452 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL));
453 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1)));
454 aml_append(method, if_ctx);
455 }
456
457 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
458 bool pcihp_bridge_en)
459 {
460 Aml *dev, *notify_method, *method;
461 QObject *bsel;
462 PCIBus *sec;
463 int i;
464
465 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
466 if (bsel) {
467 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel));
468
469 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
470 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED);
471 }
472
473 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
474 DeviceClass *dc;
475 PCIDeviceClass *pc;
476 PCIDevice *pdev = bus->devices[i];
477 int slot = PCI_SLOT(i);
478 bool hotplug_enabled_dev;
479 bool bridge_in_acpi;
480
481 if (!pdev) {
482 if (bsel) { /* add hotplug slots for non present devices */
483 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
484 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
485 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
486 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
487 aml_append(method,
488 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
489 );
490 aml_append(dev, method);
491 aml_append(parent_scope, dev);
492
493 build_append_pcihp_notify_entry(notify_method, slot);
494 }
495 continue;
496 }
497
498 pc = PCI_DEVICE_GET_CLASS(pdev);
499 dc = DEVICE_GET_CLASS(pdev);
500
501 /* When hotplug for bridges is enabled, bridges are
502 * described in ACPI separately (see build_pci_bus_end).
503 * In this case they aren't themselves hot-pluggable.
504 * Hotplugged bridges *are* hot-pluggable.
505 */
506 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en &&
507 !DEVICE(pdev)->hotplugged;
508
509 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi;
510
511 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
512 continue;
513 }
514
515 /* start to compose PCI slot descriptor */
516 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
517 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
518
519 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
520 /* add VGA specific AML methods */
521 int s3d;
522
523 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
524 s3d = 3;
525 } else {
526 s3d = 0;
527 }
528
529 method = aml_method("_S1D", 0, AML_NOTSERIALIZED);
530 aml_append(method, aml_return(aml_int(0)));
531 aml_append(dev, method);
532
533 method = aml_method("_S2D", 0, AML_NOTSERIALIZED);
534 aml_append(method, aml_return(aml_int(0)));
535 aml_append(dev, method);
536
537 method = aml_method("_S3D", 0, AML_NOTSERIALIZED);
538 aml_append(method, aml_return(aml_int(s3d)));
539 aml_append(dev, method);
540 } else if (hotplug_enabled_dev) {
541 /* add _SUN/_EJ0 to make slot hotpluggable */
542 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
543
544 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
545 aml_append(method,
546 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
547 );
548 aml_append(dev, method);
549
550 if (bsel) {
551 build_append_pcihp_notify_entry(notify_method, slot);
552 }
553 } else if (bridge_in_acpi) {
554 /*
555 * device is coldplugged bridge,
556 * add child device descriptions into its scope
557 */
558 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
559
560 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en);
561 }
562 /* slot descriptor has been composed, add it into parent context */
563 aml_append(parent_scope, dev);
564 }
565
566 if (bsel) {
567 aml_append(parent_scope, notify_method);
568 }
569
570 /* Append PCNT method to notify about events on local and child buses.
571 * Add unconditionally for root since DSDT expects it.
572 */
573 method = aml_method("PCNT", 0, AML_NOTSERIALIZED);
574
575 /* If bus supports hotplug select it and notify about local events */
576 if (bsel) {
577 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel));
578 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM")));
579 aml_append(method,
580 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */)
581 );
582 aml_append(method,
583 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */)
584 );
585 }
586
587 /* Notify about child bus events in any case */
588 if (pcihp_bridge_en) {
589 QLIST_FOREACH(sec, &bus->child, sibling) {
590 int32_t devfn = sec->parent_dev->devfn;
591
592 aml_append(method, aml_name("^S%.02X.PCNT", devfn));
593 }
594 }
595 aml_append(parent_scope, method);
596 qobject_decref(bsel);
597 }
598
599 /**
600 * build_prt_entry:
601 * @link_name: link name for PCI route entry
602 *
603 * build AML package containing a PCI route entry for @link_name
604 */
605 static Aml *build_prt_entry(const char *link_name)
606 {
607 Aml *a_zero = aml_int(0);
608 Aml *pkg = aml_package(4);
609 aml_append(pkg, a_zero);
610 aml_append(pkg, a_zero);
611 aml_append(pkg, aml_name("%s", link_name));
612 aml_append(pkg, a_zero);
613 return pkg;
614 }
615
616 /*
617 * initialize_route - Initialize the interrupt routing rule
618 * through a specific LINK:
619 * if (lnk_idx == idx)
620 * route using link 'link_name'
621 */
622 static Aml *initialize_route(Aml *route, const char *link_name,
623 Aml *lnk_idx, int idx)
624 {
625 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx)));
626 Aml *pkg = build_prt_entry(link_name);
627
628 aml_append(if_ctx, aml_store(pkg, route));
629
630 return if_ctx;
631 }
632
633 /*
634 * build_prt - Define interrupt rounting rules
635 *
636 * Returns an array of 128 routes, one for each device,
637 * based on device location.
638 * The main goal is to equaly distribute the interrupts
639 * over the 4 existing ACPI links (works only for i440fx).
640 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]".
641 *
642 */
643 static Aml *build_prt(bool is_pci0_prt)
644 {
645 Aml *method, *while_ctx, *pin, *res;
646
647 method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
648 res = aml_local(0);
649 pin = aml_local(1);
650 aml_append(method, aml_store(aml_package(128), res));
651 aml_append(method, aml_store(aml_int(0), pin));
652
653 /* while (pin < 128) */
654 while_ctx = aml_while(aml_lless(pin, aml_int(128)));
655 {
656 Aml *slot = aml_local(2);
657 Aml *lnk_idx = aml_local(3);
658 Aml *route = aml_local(4);
659
660 /* slot = pin >> 2 */
661 aml_append(while_ctx,
662 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot));
663 /* lnk_idx = (slot + pin) & 3 */
664 aml_append(while_ctx,
665 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL),
666 lnk_idx));
667
668 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */
669 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0));
670 if (is_pci0_prt) {
671 Aml *if_device_1, *if_pin_4, *else_pin_4;
672
673 /* device 1 is the power-management device, needs SCI */
674 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1)));
675 {
676 if_pin_4 = aml_if(aml_equal(pin, aml_int(4)));
677 {
678 aml_append(if_pin_4,
679 aml_store(build_prt_entry("LNKS"), route));
680 }
681 aml_append(if_device_1, if_pin_4);
682 else_pin_4 = aml_else();
683 {
684 aml_append(else_pin_4,
685 aml_store(build_prt_entry("LNKA"), route));
686 }
687 aml_append(if_device_1, else_pin_4);
688 }
689 aml_append(while_ctx, if_device_1);
690 } else {
691 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1));
692 }
693 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2));
694 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3));
695
696 /* route[0] = 0x[slot]FFFF */
697 aml_append(while_ctx,
698 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF),
699 NULL),
700 aml_index(route, aml_int(0))));
701 /* route[1] = pin & 3 */
702 aml_append(while_ctx,
703 aml_store(aml_and(pin, aml_int(3), NULL),
704 aml_index(route, aml_int(1))));
705 /* res[pin] = route */
706 aml_append(while_ctx, aml_store(route, aml_index(res, pin)));
707 /* pin++ */
708 aml_append(while_ctx, aml_increment(pin));
709 }
710 aml_append(method, while_ctx);
711 /* return res*/
712 aml_append(method, aml_return(res));
713
714 return method;
715 }
716
717 typedef struct CrsRangeEntry {
718 uint64_t base;
719 uint64_t limit;
720 } CrsRangeEntry;
721
722 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit)
723 {
724 CrsRangeEntry *entry;
725
726 entry = g_malloc(sizeof(*entry));
727 entry->base = base;
728 entry->limit = limit;
729
730 g_ptr_array_add(ranges, entry);
731 }
732
733 static void crs_range_free(gpointer data)
734 {
735 CrsRangeEntry *entry = (CrsRangeEntry *)data;
736 g_free(entry);
737 }
738
739 static gint crs_range_compare(gconstpointer a, gconstpointer b)
740 {
741 CrsRangeEntry *entry_a = *(CrsRangeEntry **)a;
742 CrsRangeEntry *entry_b = *(CrsRangeEntry **)b;
743
744 return (int64_t)entry_a->base - (int64_t)entry_b->base;
745 }
746
747 /*
748 * crs_replace_with_free_ranges - given the 'used' ranges within [start - end]
749 * interval, computes the 'free' ranges from the same interval.
750 * Example: If the input array is { [a1 - a2],[b1 - b2] }, the function
751 * will return { [base - a1], [a2 - b1], [b2 - limit] }.
752 */
753 static void crs_replace_with_free_ranges(GPtrArray *ranges,
754 uint64_t start, uint64_t end)
755 {
756 GPtrArray *free_ranges = g_ptr_array_new_with_free_func(crs_range_free);
757 uint64_t free_base = start;
758 int i;
759
760 g_ptr_array_sort(ranges, crs_range_compare);
761 for (i = 0; i < ranges->len; i++) {
762 CrsRangeEntry *used = g_ptr_array_index(ranges, i);
763
764 if (free_base < used->base) {
765 crs_range_insert(free_ranges, free_base, used->base - 1);
766 }
767
768 free_base = used->limit + 1;
769 }
770
771 if (free_base < end) {
772 crs_range_insert(free_ranges, free_base, end);
773 }
774
775 g_ptr_array_set_size(ranges, 0);
776 for (i = 0; i < free_ranges->len; i++) {
777 g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i));
778 }
779
780 g_ptr_array_free(free_ranges, false);
781 }
782
783 /*
784 * crs_range_merge - merges adjacent ranges in the given array.
785 * Array elements are deleted and replaced with the merged ranges.
786 */
787 static void crs_range_merge(GPtrArray *range)
788 {
789 GPtrArray *tmp = g_ptr_array_new_with_free_func(crs_range_free);
790 CrsRangeEntry *entry;
791 uint64_t range_base, range_limit;
792 int i;
793
794 if (!range->len) {
795 return;
796 }
797
798 g_ptr_array_sort(range, crs_range_compare);
799
800 entry = g_ptr_array_index(range, 0);
801 range_base = entry->base;
802 range_limit = entry->limit;
803 for (i = 1; i < range->len; i++) {
804 entry = g_ptr_array_index(range, i);
805 if (entry->base - 1 == range_limit) {
806 range_limit = entry->limit;
807 } else {
808 crs_range_insert(tmp, range_base, range_limit);
809 range_base = entry->base;
810 range_limit = entry->limit;
811 }
812 }
813 crs_range_insert(tmp, range_base, range_limit);
814
815 g_ptr_array_set_size(range, 0);
816 for (i = 0; i < tmp->len; i++) {
817 entry = g_ptr_array_index(tmp, i);
818 crs_range_insert(range, entry->base, entry->limit);
819 }
820 g_ptr_array_free(tmp, true);
821 }
822
823 static Aml *build_crs(PCIHostState *host,
824 GPtrArray *io_ranges, GPtrArray *mem_ranges)
825 {
826 Aml *crs = aml_resource_template();
827 GPtrArray *host_io_ranges = g_ptr_array_new_with_free_func(crs_range_free);
828 GPtrArray *host_mem_ranges = g_ptr_array_new_with_free_func(crs_range_free);
829 CrsRangeEntry *entry;
830 uint8_t max_bus = pci_bus_num(host->bus);
831 uint8_t type;
832 int devfn;
833 int i;
834
835 for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) {
836 uint64_t range_base, range_limit;
837 PCIDevice *dev = host->bus->devices[devfn];
838
839 if (!dev) {
840 continue;
841 }
842
843 for (i = 0; i < PCI_NUM_REGIONS; i++) {
844 PCIIORegion *r = &dev->io_regions[i];
845
846 range_base = r->addr;
847 range_limit = r->addr + r->size - 1;
848
849 /*
850 * Work-around for old bioses
851 * that do not support multiple root buses
852 */
853 if (!range_base || range_base > range_limit) {
854 continue;
855 }
856
857 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
858 crs_range_insert(host_io_ranges, range_base, range_limit);
859 } else { /* "memory" */
860 crs_range_insert(host_mem_ranges, range_base, range_limit);
861 }
862 }
863
864 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
865 if (type == PCI_HEADER_TYPE_BRIDGE) {
866 uint8_t subordinate = dev->config[PCI_SUBORDINATE_BUS];
867 if (subordinate > max_bus) {
868 max_bus = subordinate;
869 }
870
871 range_base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO);
872 range_limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO);
873
874 /*
875 * Work-around for old bioses
876 * that do not support multiple root buses
877 */
878 if (range_base && range_base <= range_limit) {
879 crs_range_insert(host_io_ranges, range_base, range_limit);
880 }
881
882 range_base =
883 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
884 range_limit =
885 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
886
887 /*
888 * Work-around for old bioses
889 * that do not support multiple root buses
890 */
891 if (range_base && range_base <= range_limit) {
892 crs_range_insert(host_mem_ranges, range_base, range_limit);
893 }
894
895 range_base =
896 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
897 range_limit =
898 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
899
900 /*
901 * Work-around for old bioses
902 * that do not support multiple root buses
903 */
904 if (range_base && range_base <= range_limit) {
905 crs_range_insert(host_mem_ranges, range_base, range_limit);
906 }
907 }
908 }
909
910 crs_range_merge(host_io_ranges);
911 for (i = 0; i < host_io_ranges->len; i++) {
912 entry = g_ptr_array_index(host_io_ranges, i);
913 aml_append(crs,
914 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
915 AML_POS_DECODE, AML_ENTIRE_RANGE,
916 0, entry->base, entry->limit, 0,
917 entry->limit - entry->base + 1));
918 crs_range_insert(io_ranges, entry->base, entry->limit);
919 }
920 g_ptr_array_free(host_io_ranges, true);
921
922 crs_range_merge(host_mem_ranges);
923 for (i = 0; i < host_mem_ranges->len; i++) {
924 entry = g_ptr_array_index(host_mem_ranges, i);
925 aml_append(crs,
926 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
927 AML_MAX_FIXED, AML_NON_CACHEABLE,
928 AML_READ_WRITE,
929 0, entry->base, entry->limit, 0,
930 entry->limit - entry->base + 1));
931 crs_range_insert(mem_ranges, entry->base, entry->limit);
932 }
933 g_ptr_array_free(host_mem_ranges, true);
934
935 aml_append(crs,
936 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
937 0,
938 pci_bus_num(host->bus),
939 max_bus,
940 0,
941 max_bus - pci_bus_num(host->bus) + 1));
942
943 return crs;
944 }
945
946 static void build_processor_devices(Aml *sb_scope, MachineState *machine,
947 AcpiPmInfo *pm)
948 {
949 int i, apic_idx;
950 Aml *dev;
951 Aml *crs;
952 Aml *pkg;
953 Aml *field;
954 Aml *ifctx;
955 Aml *method;
956 MachineClass *mc = MACHINE_GET_CLASS(machine);
957 CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
958 PCMachineState *pcms = PC_MACHINE(machine);
959
960 /* The current AML generator can cover the APIC ID range [0..255],
961 * inclusive, for VCPU hotplug. */
962 QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
963 g_assert(pcms->apic_id_limit <= ACPI_CPU_HOTPLUG_ID_LIMIT);
964
965 /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
966 dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE));
967 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
968 aml_append(dev,
969 aml_name_decl("_UID", aml_string("CPU Hotplug resources"))
970 );
971 /* device present, functioning, decoding, not shown in UI */
972 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
973 crs = aml_resource_template();
974 aml_append(crs,
975 aml_io(AML_DECODE16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1,
976 pm->cpu_hp_io_len)
977 );
978 aml_append(dev, aml_name_decl("_CRS", crs));
979 aml_append(sb_scope, dev);
980 /* declare CPU hotplug MMIO region and PRS field to access it */
981 aml_append(sb_scope, aml_operation_region(
982 "PRST", AML_SYSTEM_IO, aml_int(pm->cpu_hp_io_base), pm->cpu_hp_io_len));
983 field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
984 aml_append(field, aml_named_field("PRS", 256));
985 aml_append(sb_scope, field);
986
987 /* build Processor object for each processor */
988 for (i = 0; i < apic_ids->len; i++) {
989 int apic_id = apic_ids->cpus[i].arch_id;
990
991 assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT);
992
993 dev = aml_processor(apic_id, 0, 0, "CP%.02X", apic_id);
994
995 method = aml_method("_MAT", 0, AML_NOTSERIALIZED);
996 aml_append(method,
997 aml_return(aml_call1(CPU_MAT_METHOD, aml_int(apic_id))));
998 aml_append(dev, method);
999
1000 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1001 aml_append(method,
1002 aml_return(aml_call1(CPU_STATUS_METHOD, aml_int(apic_id))));
1003 aml_append(dev, method);
1004
1005 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
1006 aml_append(method,
1007 aml_return(aml_call2(CPU_EJECT_METHOD, aml_int(apic_id),
1008 aml_arg(0)))
1009 );
1010 aml_append(dev, method);
1011
1012 aml_append(sb_scope, dev);
1013 }
1014
1015 /* build this code:
1016 * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
1017 */
1018 /* Arg0 = Processor ID = APIC ID */
1019 method = aml_method(AML_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
1020 for (i = 0; i < apic_ids->len; i++) {
1021 int apic_id = apic_ids->cpus[i].arch_id;
1022
1023 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(apic_id)));
1024 aml_append(ifctx,
1025 aml_notify(aml_name("CP%.02X", apic_id), aml_arg(1))
1026 );
1027 aml_append(method, ifctx);
1028 }
1029 aml_append(sb_scope, method);
1030
1031 /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
1032 *
1033 * Note: The ability to create variable-sized packages was first
1034 * introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages
1035 * ith up to 255 elements. Windows guests up to win2k8 fail when
1036 * VarPackageOp is used.
1037 */
1038 pkg = pcms->apic_id_limit <= 255 ? aml_package(pcms->apic_id_limit) :
1039 aml_varpackage(pcms->apic_id_limit);
1040
1041 for (i = 0, apic_idx = 0; i < apic_ids->len; i++) {
1042 int apic_id = apic_ids->cpus[i].arch_id;
1043
1044 for (; apic_idx < apic_id; apic_idx++) {
1045 aml_append(pkg, aml_int(0));
1046 }
1047 aml_append(pkg, aml_int(apic_ids->cpus[i].cpu ? 1 : 0));
1048 apic_idx = apic_id + 1;
1049 }
1050 aml_append(sb_scope, aml_name_decl(CPU_ON_BITMAP, pkg));
1051 g_free(apic_ids);
1052 }
1053
1054 static void build_memory_devices(Aml *sb_scope, int nr_mem,
1055 uint16_t io_base, uint16_t io_len)
1056 {
1057 int i;
1058 Aml *scope;
1059 Aml *crs;
1060 Aml *field;
1061 Aml *dev;
1062 Aml *method;
1063 Aml *ifctx;
1064
1065 /* build memory devices */
1066 assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
1067 scope = aml_scope("\\_SB.PCI0." MEMORY_HOTPLUG_DEVICE);
1068 aml_append(scope,
1069 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem))
1070 );
1071
1072 crs = aml_resource_template();
1073 aml_append(crs,
1074 aml_io(AML_DECODE16, io_base, io_base, 0, io_len)
1075 );
1076 aml_append(scope, aml_name_decl("_CRS", crs));
1077
1078 aml_append(scope, aml_operation_region(
1079 MEMORY_HOTPLUG_IO_REGION, AML_SYSTEM_IO,
1080 aml_int(io_base), io_len)
1081 );
1082
1083 field = aml_field(MEMORY_HOTPLUG_IO_REGION, AML_DWORD_ACC,
1084 AML_NOLOCK, AML_PRESERVE);
1085 aml_append(field, /* read only */
1086 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32));
1087 aml_append(field, /* read only */
1088 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32));
1089 aml_append(field, /* read only */
1090 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32));
1091 aml_append(field, /* read only */
1092 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32));
1093 aml_append(field, /* read only */
1094 aml_named_field(MEMORY_SLOT_PROXIMITY, 32));
1095 aml_append(scope, field);
1096
1097 field = aml_field(MEMORY_HOTPLUG_IO_REGION, AML_BYTE_ACC,
1098 AML_NOLOCK, AML_WRITE_AS_ZEROS);
1099 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
1100 aml_append(field, /* 1 if enabled, read only */
1101 aml_named_field(MEMORY_SLOT_ENABLED, 1));
1102 aml_append(field,
1103 /*(read) 1 if has a insert event. (write) 1 to clear event */
1104 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1));
1105 aml_append(field,
1106 /* (read) 1 if has a remove event. (write) 1 to clear event */
1107 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1));
1108 aml_append(field,
1109 /* initiates device eject, write only */
1110 aml_named_field(MEMORY_SLOT_EJECT, 1));
1111 aml_append(scope, field);
1112
1113 field = aml_field(MEMORY_HOTPLUG_IO_REGION, AML_DWORD_ACC,
1114 AML_NOLOCK, AML_PRESERVE);
1115 aml_append(field, /* DIMM selector, write only */
1116 aml_named_field(MEMORY_SLOT_SLECTOR, 32));
1117 aml_append(field, /* _OST event code, write only */
1118 aml_named_field(MEMORY_SLOT_OST_EVENT, 32));
1119 aml_append(field, /* _OST status code, write only */
1120 aml_named_field(MEMORY_SLOT_OST_STATUS, 32));
1121 aml_append(scope, field);
1122 aml_append(sb_scope, scope);
1123
1124 for (i = 0; i < nr_mem; i++) {
1125 #define BASEPATH "\\_SB.PCI0." MEMORY_HOTPLUG_DEVICE "."
1126 const char *s;
1127
1128 dev = aml_device("MP%02X", i);
1129 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i)));
1130 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
1131
1132 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1133 s = BASEPATH MEMORY_SLOT_CRS_METHOD;
1134 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
1135 aml_append(dev, method);
1136
1137 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1138 s = BASEPATH MEMORY_SLOT_STATUS_METHOD;
1139 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
1140 aml_append(dev, method);
1141
1142 method = aml_method("_PXM", 0, AML_NOTSERIALIZED);
1143 s = BASEPATH MEMORY_SLOT_PROXIMITY_METHOD;
1144 aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
1145 aml_append(dev, method);
1146
1147 method = aml_method("_OST", 3, AML_NOTSERIALIZED);
1148 s = BASEPATH MEMORY_SLOT_OST_METHOD;
1149
1150 aml_append(method, aml_return(aml_call4(
1151 s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2)
1152 )));
1153 aml_append(dev, method);
1154
1155 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
1156 s = BASEPATH MEMORY_SLOT_EJECT_METHOD;
1157 aml_append(method, aml_return(aml_call2(
1158 s, aml_name("_UID"), aml_arg(0))));
1159 aml_append(dev, method);
1160
1161 aml_append(sb_scope, dev);
1162 }
1163
1164 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
1165 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... }
1166 */
1167 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
1168 for (i = 0; i < nr_mem; i++) {
1169 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
1170 aml_append(ifctx,
1171 aml_notify(aml_name("MP%.02X", i), aml_arg(1))
1172 );
1173 aml_append(method, ifctx);
1174 }
1175 aml_append(sb_scope, method);
1176 }
1177
1178 static void build_hpet_aml(Aml *table)
1179 {
1180 Aml *crs;
1181 Aml *field;
1182 Aml *method;
1183 Aml *if_ctx;
1184 Aml *scope = aml_scope("_SB");
1185 Aml *dev = aml_device("HPET");
1186 Aml *zero = aml_int(0);
1187 Aml *id = aml_local(0);
1188 Aml *period = aml_local(1);
1189
1190 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103")));
1191 aml_append(dev, aml_name_decl("_UID", zero));
1192
1193 aml_append(dev,
1194 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE),
1195 HPET_LEN));
1196 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE);
1197 aml_append(field, aml_named_field("VEND", 32));
1198 aml_append(field, aml_named_field("PRD", 32));
1199 aml_append(dev, field);
1200
1201 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1202 aml_append(method, aml_store(aml_name("VEND"), id));
1203 aml_append(method, aml_store(aml_name("PRD"), period));
1204 aml_append(method, aml_shiftright(id, aml_int(16), id));
1205 if_ctx = aml_if(aml_lor(aml_equal(id, zero),
1206 aml_equal(id, aml_int(0xffff))));
1207 {
1208 aml_append(if_ctx, aml_return(zero));
1209 }
1210 aml_append(method, if_ctx);
1211
1212 if_ctx = aml_if(aml_lor(aml_equal(period, zero),
1213 aml_lgreater(period, aml_int(100000000))));
1214 {
1215 aml_append(if_ctx, aml_return(zero));
1216 }
1217 aml_append(method, if_ctx);
1218
1219 aml_append(method, aml_return(aml_int(0x0F)));
1220 aml_append(dev, method);
1221
1222 crs = aml_resource_template();
1223 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY));
1224 aml_append(dev, aml_name_decl("_CRS", crs));
1225
1226 aml_append(scope, dev);
1227 aml_append(table, scope);
1228 }
1229
1230 static Aml *build_fdinfo_aml(int idx, FloppyDriveType type)
1231 {
1232 Aml *dev, *fdi;
1233 uint8_t maxc, maxh, maxs;
1234
1235 isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs);
1236
1237 dev = aml_device("FLP%c", 'A' + idx);
1238
1239 aml_append(dev, aml_name_decl("_ADR", aml_int(idx)));
1240
1241 fdi = aml_package(16);
1242 aml_append(fdi, aml_int(idx)); /* Drive Number */
1243 aml_append(fdi,
1244 aml_int(cmos_get_fd_drive_type(type))); /* Device Type */
1245 /*
1246 * the values below are the limits of the drive, and are thus independent
1247 * of the inserted media
1248 */
1249 aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */
1250 aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */
1251 aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */
1252 /*
1253 * SeaBIOS returns the below values for int 0x13 func 0x08 regardless of
1254 * the drive type, so shall we
1255 */
1256 aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */
1257 aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */
1258 aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */
1259 aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */
1260 aml_append(fdi, aml_int(0x12)); /* disk_eot */
1261 aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */
1262 aml_append(fdi, aml_int(0xFF)); /* disk_dtl */
1263 aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */
1264 aml_append(fdi, aml_int(0xF6)); /* disk_fill */
1265 aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */
1266 aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */
1267
1268 aml_append(dev, aml_name_decl("_FDI", fdi));
1269 return dev;
1270 }
1271
1272 static Aml *build_fdc_device_aml(ISADevice *fdc)
1273 {
1274 int i;
1275 Aml *dev;
1276 Aml *crs;
1277
1278 #define ACPI_FDE_MAX_FD 4
1279 uint32_t fde_buf[5] = {
1280 0, 0, 0, 0, /* presence of floppy drives #0 - #3 */
1281 cpu_to_le32(2) /* tape presence (2 == never present) */
1282 };
1283
1284 dev = aml_device("FDC0");
1285 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700")));
1286
1287 crs = aml_resource_template();
1288 aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04));
1289 aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01));
1290 aml_append(crs, aml_irq_no_flags(6));
1291 aml_append(crs,
1292 aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2));
1293 aml_append(dev, aml_name_decl("_CRS", crs));
1294
1295 for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) {
1296 FloppyDriveType type = isa_fdc_get_drive_type(fdc, i);
1297
1298 if (type < FLOPPY_DRIVE_TYPE_NONE) {
1299 fde_buf[i] = cpu_to_le32(1); /* drive present */
1300 aml_append(dev, build_fdinfo_aml(i, type));
1301 }
1302 }
1303 aml_append(dev, aml_name_decl("_FDE",
1304 aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf)));
1305
1306 return dev;
1307 }
1308
1309 static Aml *build_rtc_device_aml(void)
1310 {
1311 Aml *dev;
1312 Aml *crs;
1313
1314 dev = aml_device("RTC");
1315 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00")));
1316 crs = aml_resource_template();
1317 aml_append(crs, aml_io(AML_DECODE16, 0x0070, 0x0070, 0x10, 0x02));
1318 aml_append(crs, aml_irq_no_flags(8));
1319 aml_append(crs, aml_io(AML_DECODE16, 0x0072, 0x0072, 0x02, 0x06));
1320 aml_append(dev, aml_name_decl("_CRS", crs));
1321
1322 return dev;
1323 }
1324
1325 static Aml *build_kbd_device_aml(void)
1326 {
1327 Aml *dev;
1328 Aml *crs;
1329 Aml *method;
1330
1331 dev = aml_device("KBD");
1332 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0303")));
1333
1334 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1335 aml_append(method, aml_return(aml_int(0x0f)));
1336 aml_append(dev, method);
1337
1338 crs = aml_resource_template();
1339 aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01));
1340 aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01));
1341 aml_append(crs, aml_irq_no_flags(1));
1342 aml_append(dev, aml_name_decl("_CRS", crs));
1343
1344 return dev;
1345 }
1346
1347 static Aml *build_mouse_device_aml(void)
1348 {
1349 Aml *dev;
1350 Aml *crs;
1351 Aml *method;
1352
1353 dev = aml_device("MOU");
1354 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0F13")));
1355
1356 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1357 aml_append(method, aml_return(aml_int(0x0f)));
1358 aml_append(dev, method);
1359
1360 crs = aml_resource_template();
1361 aml_append(crs, aml_irq_no_flags(12));
1362 aml_append(dev, aml_name_decl("_CRS", crs));
1363
1364 return dev;
1365 }
1366
1367 static Aml *build_lpt_device_aml(void)
1368 {
1369 Aml *dev;
1370 Aml *crs;
1371 Aml *method;
1372 Aml *if_ctx;
1373 Aml *else_ctx;
1374 Aml *zero = aml_int(0);
1375 Aml *is_present = aml_local(0);
1376
1377 dev = aml_device("LPT");
1378 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400")));
1379
1380 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1381 aml_append(method, aml_store(aml_name("LPEN"), is_present));
1382 if_ctx = aml_if(aml_equal(is_present, zero));
1383 {
1384 aml_append(if_ctx, aml_return(aml_int(0x00)));
1385 }
1386 aml_append(method, if_ctx);
1387 else_ctx = aml_else();
1388 {
1389 aml_append(else_ctx, aml_return(aml_int(0x0f)));
1390 }
1391 aml_append(method, else_ctx);
1392 aml_append(dev, method);
1393
1394 crs = aml_resource_template();
1395 aml_append(crs, aml_io(AML_DECODE16, 0x0378, 0x0378, 0x08, 0x08));
1396 aml_append(crs, aml_irq_no_flags(7));
1397 aml_append(dev, aml_name_decl("_CRS", crs));
1398
1399 return dev;
1400 }
1401
1402 static Aml *build_com_device_aml(uint8_t uid)
1403 {
1404 Aml *dev;
1405 Aml *crs;
1406 Aml *method;
1407 Aml *if_ctx;
1408 Aml *else_ctx;
1409 Aml *zero = aml_int(0);
1410 Aml *is_present = aml_local(0);
1411 const char *enabled_field = "CAEN";
1412 uint8_t irq = 4;
1413 uint16_t io_port = 0x03F8;
1414
1415 assert(uid == 1 || uid == 2);
1416 if (uid == 2) {
1417 enabled_field = "CBEN";
1418 irq = 3;
1419 io_port = 0x02F8;
1420 }
1421
1422 dev = aml_device("COM%d", uid);
1423 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501")));
1424 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1425
1426 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1427 aml_append(method, aml_store(aml_name("%s", enabled_field), is_present));
1428 if_ctx = aml_if(aml_equal(is_present, zero));
1429 {
1430 aml_append(if_ctx, aml_return(aml_int(0x00)));
1431 }
1432 aml_append(method, if_ctx);
1433 else_ctx = aml_else();
1434 {
1435 aml_append(else_ctx, aml_return(aml_int(0x0f)));
1436 }
1437 aml_append(method, else_ctx);
1438 aml_append(dev, method);
1439
1440 crs = aml_resource_template();
1441 aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08));
1442 aml_append(crs, aml_irq_no_flags(irq));
1443 aml_append(dev, aml_name_decl("_CRS", crs));
1444
1445 return dev;
1446 }
1447
1448 static void build_isa_devices_aml(Aml *table)
1449 {
1450 ISADevice *fdc = pc_find_fdc0();
1451
1452 Aml *scope = aml_scope("_SB.PCI0.ISA");
1453
1454 aml_append(scope, build_rtc_device_aml());
1455 aml_append(scope, build_kbd_device_aml());
1456 aml_append(scope, build_mouse_device_aml());
1457 if (fdc) {
1458 aml_append(scope, build_fdc_device_aml(fdc));
1459 }
1460 aml_append(scope, build_lpt_device_aml());
1461 aml_append(scope, build_com_device_aml(1));
1462 aml_append(scope, build_com_device_aml(2));
1463
1464 aml_append(table, scope);
1465 }
1466
1467 static void build_dbg_aml(Aml *table)
1468 {
1469 Aml *field;
1470 Aml *method;
1471 Aml *while_ctx;
1472 Aml *scope = aml_scope("\\");
1473 Aml *buf = aml_local(0);
1474 Aml *len = aml_local(1);
1475 Aml *idx = aml_local(2);
1476
1477 aml_append(scope,
1478 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01));
1479 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1480 aml_append(field, aml_named_field("DBGB", 8));
1481 aml_append(scope, field);
1482
1483 method = aml_method("DBUG", 1, AML_NOTSERIALIZED);
1484
1485 aml_append(method, aml_to_hexstring(aml_arg(0), buf));
1486 aml_append(method, aml_to_buffer(buf, buf));
1487 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len));
1488 aml_append(method, aml_store(aml_int(0), idx));
1489
1490 while_ctx = aml_while(aml_lless(idx, len));
1491 aml_append(while_ctx,
1492 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB")));
1493 aml_append(while_ctx, aml_increment(idx));
1494 aml_append(method, while_ctx);
1495
1496 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB")));
1497 aml_append(scope, method);
1498
1499 aml_append(table, scope);
1500 }
1501
1502 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg)
1503 {
1504 Aml *dev;
1505 Aml *crs;
1506 Aml *method;
1507 uint32_t irqs[] = {5, 10, 11};
1508
1509 dev = aml_device("%s", name);
1510 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1511 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1512
1513 crs = aml_resource_template();
1514 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
1515 AML_SHARED, irqs, ARRAY_SIZE(irqs)));
1516 aml_append(dev, aml_name_decl("_PRS", crs));
1517
1518 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1519 aml_append(method, aml_return(aml_call1("IQST", reg)));
1520 aml_append(dev, method);
1521
1522 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1523 aml_append(method, aml_or(reg, aml_int(0x80), reg));
1524 aml_append(dev, method);
1525
1526 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1527 aml_append(method, aml_return(aml_call1("IQCR", reg)));
1528 aml_append(dev, method);
1529
1530 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1531 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI"));
1532 aml_append(method, aml_store(aml_name("PRRI"), reg));
1533 aml_append(dev, method);
1534
1535 return dev;
1536 }
1537
1538 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi)
1539 {
1540 Aml *dev;
1541 Aml *crs;
1542 Aml *method;
1543 uint32_t irqs;
1544
1545 dev = aml_device("%s", name);
1546 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1547 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1548
1549 crs = aml_resource_template();
1550 irqs = gsi;
1551 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
1552 AML_SHARED, &irqs, 1));
1553 aml_append(dev, aml_name_decl("_PRS", crs));
1554
1555 aml_append(dev, aml_name_decl("_CRS", crs));
1556
1557 /*
1558 * _DIS can be no-op because the interrupt cannot be disabled.
1559 */
1560 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1561 aml_append(dev, method);
1562
1563 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1564 aml_append(dev, method);
1565
1566 return dev;
1567 }
1568
1569 /* _CRS method - get current settings */
1570 static Aml *build_iqcr_method(bool is_piix4)
1571 {
1572 Aml *if_ctx;
1573 uint32_t irqs;
1574 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED);
1575 Aml *crs = aml_resource_template();
1576
1577 irqs = 0;
1578 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
1579 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1));
1580 aml_append(method, aml_name_decl("PRR0", crs));
1581
1582 aml_append(method,
1583 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI"));
1584
1585 if (is_piix4) {
1586 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80)));
1587 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI")));
1588 aml_append(method, if_ctx);
1589 } else {
1590 aml_append(method,
1591 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL),
1592 aml_name("PRRI")));
1593 }
1594
1595 aml_append(method, aml_return(aml_name("PRR0")));
1596 return method;
1597 }
1598
1599 /* _STA method - get status */
1600 static Aml *build_irq_status_method(void)
1601 {
1602 Aml *if_ctx;
1603 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED);
1604
1605 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL));
1606 aml_append(if_ctx, aml_return(aml_int(0x09)));
1607 aml_append(method, if_ctx);
1608 aml_append(method, aml_return(aml_int(0x0B)));
1609 return method;
1610 }
1611
1612 static void build_piix4_pci0_int(Aml *table)
1613 {
1614 Aml *dev;
1615 Aml *crs;
1616 Aml *field;
1617 Aml *method;
1618 uint32_t irqs;
1619 Aml *sb_scope = aml_scope("_SB");
1620 Aml *pci0_scope = aml_scope("PCI0");
1621
1622 aml_append(pci0_scope, build_prt(true));
1623 aml_append(sb_scope, pci0_scope);
1624
1625 field = aml_field("PCI0.ISA.P40C", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1626 aml_append(field, aml_named_field("PRQ0", 8));
1627 aml_append(field, aml_named_field("PRQ1", 8));
1628 aml_append(field, aml_named_field("PRQ2", 8));
1629 aml_append(field, aml_named_field("PRQ3", 8));
1630 aml_append(sb_scope, field);
1631
1632 aml_append(sb_scope, build_irq_status_method());
1633 aml_append(sb_scope, build_iqcr_method(true));
1634
1635 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0")));
1636 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1")));
1637 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2")));
1638 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3")));
1639
1640 dev = aml_device("LNKS");
1641 {
1642 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1643 aml_append(dev, aml_name_decl("_UID", aml_int(4)));
1644
1645 crs = aml_resource_template();
1646 irqs = 9;
1647 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
1648 AML_ACTIVE_HIGH, AML_SHARED,
1649 &irqs, 1));
1650 aml_append(dev, aml_name_decl("_PRS", crs));
1651
1652 /* The SCI cannot be disabled and is always attached to GSI 9,
1653 * so these are no-ops. We only need this link to override the
1654 * polarity to active high and match the content of the MADT.
1655 */
1656 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1657 aml_append(method, aml_return(aml_int(0x0b)));
1658 aml_append(dev, method);
1659
1660 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1661 aml_append(dev, method);
1662
1663 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1664 aml_append(method, aml_return(aml_name("_PRS")));
1665 aml_append(dev, method);
1666
1667 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1668 aml_append(dev, method);
1669 }
1670 aml_append(sb_scope, dev);
1671
1672 aml_append(table, sb_scope);
1673 }
1674
1675 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name)
1676 {
1677 int i;
1678 int head;
1679 Aml *pkg;
1680 char base = name[3] < 'E' ? 'A' : 'E';
1681 char *s = g_strdup(name);
1682 Aml *a_nr = aml_int((nr << 16) | 0xffff);
1683
1684 assert(strlen(s) == 4);
1685
1686 head = name[3] - base;
1687 for (i = 0; i < 4; i++) {
1688 if (head + i > 3) {
1689 head = i * -1;
1690 }
1691 s[3] = base + head + i;
1692 pkg = aml_package(4);
1693 aml_append(pkg, a_nr);
1694 aml_append(pkg, aml_int(i));
1695 aml_append(pkg, aml_name("%s", s));
1696 aml_append(pkg, aml_int(0));
1697 aml_append(ctx, pkg);
1698 }
1699 g_free(s);
1700 }
1701
1702 static Aml *build_q35_routing_table(const char *str)
1703 {
1704 int i;
1705 Aml *pkg;
1706 char *name = g_strdup_printf("%s ", str);
1707
1708 pkg = aml_package(128);
1709 for (i = 0; i < 0x18; i++) {
1710 name[3] = 'E' + (i & 0x3);
1711 append_q35_prt_entry(pkg, i, name);
1712 }
1713
1714 name[3] = 'E';
1715 append_q35_prt_entry(pkg, 0x18, name);
1716
1717 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */
1718 for (i = 0x0019; i < 0x1e; i++) {
1719 name[3] = 'A';
1720 append_q35_prt_entry(pkg, i, name);
1721 }
1722
1723 /* PCIe->PCI bridge. use PIRQ[E-H] */
1724 name[3] = 'E';
1725 append_q35_prt_entry(pkg, 0x1e, name);
1726 name[3] = 'A';
1727 append_q35_prt_entry(pkg, 0x1f, name);
1728
1729 g_free(name);
1730 return pkg;
1731 }
1732
1733 static void build_q35_pci0_int(Aml *table)
1734 {
1735 Aml *field;
1736 Aml *method;
1737 Aml *sb_scope = aml_scope("_SB");
1738 Aml *pci0_scope = aml_scope("PCI0");
1739
1740 /* Zero => PIC mode, One => APIC Mode */
1741 aml_append(table, aml_name_decl("PICF", aml_int(0)));
1742 method = aml_method("_PIC", 1, AML_NOTSERIALIZED);
1743 {
1744 aml_append(method, aml_store(aml_arg(0), aml_name("PICF")));
1745 }
1746 aml_append(table, method);
1747
1748 aml_append(pci0_scope,
1749 aml_name_decl("PRTP", build_q35_routing_table("LNK")));
1750 aml_append(pci0_scope,
1751 aml_name_decl("PRTA", build_q35_routing_table("GSI")));
1752
1753 method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
1754 {
1755 Aml *if_ctx;
1756 Aml *else_ctx;
1757
1758 /* PCI IRQ routing table, example from ACPI 2.0a specification,
1759 section 6.2.8.1 */
1760 /* Note: we provide the same info as the PCI routing
1761 table of the Bochs BIOS */
1762 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0)));
1763 aml_append(if_ctx, aml_return(aml_name("PRTP")));
1764 aml_append(method, if_ctx);
1765 else_ctx = aml_else();
1766 aml_append(else_ctx, aml_return(aml_name("PRTA")));
1767 aml_append(method, else_ctx);
1768 }
1769 aml_append(pci0_scope, method);
1770 aml_append(sb_scope, pci0_scope);
1771
1772 field = aml_field("PCI0.ISA.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1773 aml_append(field, aml_named_field("PRQA", 8));
1774 aml_append(field, aml_named_field("PRQB", 8));
1775 aml_append(field, aml_named_field("PRQC", 8));
1776 aml_append(field, aml_named_field("PRQD", 8));
1777 aml_append(field, aml_reserved_field(0x20));
1778 aml_append(field, aml_named_field("PRQE", 8));
1779 aml_append(field, aml_named_field("PRQF", 8));
1780 aml_append(field, aml_named_field("PRQG", 8));
1781 aml_append(field, aml_named_field("PRQH", 8));
1782 aml_append(sb_scope, field);
1783
1784 aml_append(sb_scope, build_irq_status_method());
1785 aml_append(sb_scope, build_iqcr_method(false));
1786
1787 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA")));
1788 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB")));
1789 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC")));
1790 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD")));
1791 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE")));
1792 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF")));
1793 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG")));
1794 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH")));
1795
1796 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10));
1797 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11));
1798 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12));
1799 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13));
1800 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14));
1801 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15));
1802 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16));
1803 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17));
1804
1805 aml_append(table, sb_scope);
1806 }
1807
1808 static void build_q35_isa_bridge(Aml *table)
1809 {
1810 Aml *dev;
1811 Aml *scope;
1812 Aml *field;
1813
1814 scope = aml_scope("_SB.PCI0");
1815 dev = aml_device("ISA");
1816 aml_append(dev, aml_name_decl("_ADR", aml_int(0x001F0000)));
1817
1818 /* ICH9 PCI to ISA irq remapping */
1819 aml_append(dev, aml_operation_region("PIRQ", AML_PCI_CONFIG,
1820 aml_int(0x60), 0x0C));
1821
1822 aml_append(dev, aml_operation_region("LPCD", AML_PCI_CONFIG,
1823 aml_int(0x80), 0x02));
1824 field = aml_field("LPCD", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
1825 aml_append(field, aml_named_field("COMA", 3));
1826 aml_append(field, aml_reserved_field(1));
1827 aml_append(field, aml_named_field("COMB", 3));
1828 aml_append(field, aml_reserved_field(1));
1829 aml_append(field, aml_named_field("LPTD", 2));
1830 aml_append(dev, field);
1831
1832 aml_append(dev, aml_operation_region("LPCE", AML_PCI_CONFIG,
1833 aml_int(0x82), 0x02));
1834 /* enable bits */
1835 field = aml_field("LPCE", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
1836 aml_append(field, aml_named_field("CAEN", 1));
1837 aml_append(field, aml_named_field("CBEN", 1));
1838 aml_append(field, aml_named_field("LPEN", 1));
1839 aml_append(dev, field);
1840
1841 aml_append(scope, dev);
1842 aml_append(table, scope);
1843 }
1844
1845 static void build_piix4_pm(Aml *table)
1846 {
1847 Aml *dev;
1848 Aml *scope;
1849
1850 scope = aml_scope("_SB.PCI0");
1851 dev = aml_device("PX13");
1852 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010003)));
1853
1854 aml_append(dev, aml_operation_region("P13C", AML_PCI_CONFIG,
1855 aml_int(0x00), 0xff));
1856 aml_append(scope, dev);
1857 aml_append(table, scope);
1858 }
1859
1860 static void build_piix4_isa_bridge(Aml *table)
1861 {
1862 Aml *dev;
1863 Aml *scope;
1864 Aml *field;
1865
1866 scope = aml_scope("_SB.PCI0");
1867 dev = aml_device("ISA");
1868 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010000)));
1869
1870 /* PIIX PCI to ISA irq remapping */
1871 aml_append(dev, aml_operation_region("P40C", AML_PCI_CONFIG,
1872 aml_int(0x60), 0x04));
1873 /* enable bits */
1874 field = aml_field("^PX13.P13C", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
1875 /* Offset(0x5f),, 7, */
1876 aml_append(field, aml_reserved_field(0x2f8));
1877 aml_append(field, aml_reserved_field(7));
1878 aml_append(field, aml_named_field("LPEN", 1));
1879 /* Offset(0x67),, 3, */
1880 aml_append(field, aml_reserved_field(0x38));
1881 aml_append(field, aml_reserved_field(3));
1882 aml_append(field, aml_named_field("CAEN", 1));
1883 aml_append(field, aml_reserved_field(3));
1884 aml_append(field, aml_named_field("CBEN", 1));
1885 aml_append(dev, field);
1886
1887 aml_append(scope, dev);
1888 aml_append(table, scope);
1889 }
1890
1891 static void build_piix4_pci_hotplug(Aml *table)
1892 {
1893 Aml *scope;
1894 Aml *field;
1895 Aml *method;
1896
1897 scope = aml_scope("_SB.PCI0");
1898
1899 aml_append(scope,
1900 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08));
1901 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1902 aml_append(field, aml_named_field("PCIU", 32));
1903 aml_append(field, aml_named_field("PCID", 32));
1904 aml_append(scope, field);
1905
1906 aml_append(scope,
1907 aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04));
1908 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1909 aml_append(field, aml_named_field("B0EJ", 32));
1910 aml_append(scope, field);
1911
1912 aml_append(scope,
1913 aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04));
1914 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1915 aml_append(field, aml_named_field("BNUM", 32));
1916 aml_append(scope, field);
1917
1918 aml_append(scope, aml_mutex("BLCK", 0));
1919
1920 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED);
1921 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
1922 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
1923 aml_append(method,
1924 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ")));
1925 aml_append(method, aml_release(aml_name("BLCK")));
1926 aml_append(method, aml_return(aml_int(0)));
1927 aml_append(scope, method);
1928
1929 aml_append(table, scope);
1930 }
1931
1932 static Aml *build_q35_osc_method(void)
1933 {
1934 Aml *if_ctx;
1935 Aml *if_ctx2;
1936 Aml *else_ctx;
1937 Aml *method;
1938 Aml *a_cwd1 = aml_name("CDW1");
1939 Aml *a_ctrl = aml_name("CTRL");
1940
1941 method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
1942 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
1943
1944 if_ctx = aml_if(aml_equal(
1945 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766")));
1946 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
1947 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
1948
1949 aml_append(if_ctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
1950 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl));
1951
1952 /*
1953 * Always allow native PME, AER (no dependencies)
1954 * Never allow SHPC (no SHPC controller in this system)
1955 */
1956 aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1D), a_ctrl));
1957
1958 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1))));
1959 /* Unknown revision */
1960 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1));
1961 aml_append(if_ctx, if_ctx2);
1962
1963 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl)));
1964 /* Capabilities bits were masked */
1965 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1));
1966 aml_append(if_ctx, if_ctx2);
1967
1968 /* Update DWORD3 in the buffer */
1969 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3")));
1970 aml_append(method, if_ctx);
1971
1972 else_ctx = aml_else();
1973 /* Unrecognized UUID */
1974 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1));
1975 aml_append(method, else_ctx);
1976
1977 aml_append(method, aml_return(aml_arg(3)));
1978 return method;
1979 }
1980
1981 static void
1982 build_dsdt(GArray *table_data, GArray *linker,
1983 AcpiPmInfo *pm, AcpiMiscInfo *misc,
1984 PcPciInfo *pci, MachineState *machine)
1985 {
1986 CrsRangeEntry *entry;
1987 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs;
1988 GPtrArray *mem_ranges = g_ptr_array_new_with_free_func(crs_range_free);
1989 GPtrArray *io_ranges = g_ptr_array_new_with_free_func(crs_range_free);
1990 PCMachineState *pcms = PC_MACHINE(machine);
1991 uint32_t nr_mem = machine->ram_slots;
1992 int root_bus_limit = 0xFF;
1993 PCIBus *bus = NULL;
1994 int i;
1995
1996 dsdt = init_aml_allocator();
1997
1998 /* Reserve space for header */
1999 acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
2000
2001 build_dbg_aml(dsdt);
2002 if (misc->is_piix4) {
2003 sb_scope = aml_scope("_SB");
2004 dev = aml_device("PCI0");
2005 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
2006 aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
2007 aml_append(dev, aml_name_decl("_UID", aml_int(1)));
2008 aml_append(sb_scope, dev);
2009 aml_append(dsdt, sb_scope);
2010
2011 build_hpet_aml(dsdt);
2012 build_piix4_pm(dsdt);
2013 build_piix4_isa_bridge(dsdt);
2014 build_isa_devices_aml(dsdt);
2015 build_piix4_pci_hotplug(dsdt);
2016 build_piix4_pci0_int(dsdt);
2017 } else {
2018 sb_scope = aml_scope("_SB");
2019 aml_append(sb_scope,
2020 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x0c));
2021 aml_append(sb_scope,
2022 aml_operation_region("PCSB", AML_SYSTEM_IO, aml_int(0xae0c), 0x01));
2023 field = aml_field("PCSB", AML_ANY_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
2024 aml_append(field, aml_named_field("PCIB", 8));
2025 aml_append(sb_scope, field);
2026 aml_append(dsdt, sb_scope);
2027
2028 sb_scope = aml_scope("_SB");
2029 dev = aml_device("PCI0");
2030 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
2031 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
2032 aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
2033 aml_append(dev, aml_name_decl("_UID", aml_int(1)));
2034 aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
2035 aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
2036 aml_append(dev, build_q35_osc_method());
2037 aml_append(sb_scope, dev);
2038 aml_append(dsdt, sb_scope);
2039
2040 build_hpet_aml(dsdt);
2041 build_q35_isa_bridge(dsdt);
2042 build_isa_devices_aml(dsdt);
2043 build_q35_pci0_int(dsdt);
2044 }
2045
2046 build_cpu_hotplug_aml(dsdt);
2047 build_memory_hotplug_aml(dsdt, nr_mem, pm->mem_hp_io_base,
2048 pm->mem_hp_io_len);
2049
2050 scope = aml_scope("_GPE");
2051 {
2052 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006")));
2053
2054 aml_append(scope, aml_method("_L00", 0, AML_NOTSERIALIZED));
2055
2056 if (misc->is_piix4) {
2057 method = aml_method("_E01", 0, AML_NOTSERIALIZED);
2058 aml_append(method,
2059 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF));
2060 aml_append(method, aml_call0("\\_SB.PCI0.PCNT"));
2061 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK")));
2062 aml_append(scope, method);
2063 } else {
2064 aml_append(scope, aml_method("_L01", 0, AML_NOTSERIALIZED));
2065 }
2066
2067 method = aml_method("_E02", 0, AML_NOTSERIALIZED);
2068 aml_append(method, aml_call0("\\_SB." CPU_SCAN_METHOD));
2069 aml_append(scope, method);
2070
2071 method = aml_method("_E03", 0, AML_NOTSERIALIZED);
2072 aml_append(method, aml_call0(MEMORY_HOTPLUG_HANDLER_PATH));
2073 aml_append(scope, method);
2074
2075 aml_append(scope, aml_method("_L04", 0, AML_NOTSERIALIZED));
2076 aml_append(scope, aml_method("_L05", 0, AML_NOTSERIALIZED));
2077 aml_append(scope, aml_method("_L06", 0, AML_NOTSERIALIZED));
2078 aml_append(scope, aml_method("_L07", 0, AML_NOTSERIALIZED));
2079 aml_append(scope, aml_method("_L08", 0, AML_NOTSERIALIZED));
2080 aml_append(scope, aml_method("_L09", 0, AML_NOTSERIALIZED));
2081 aml_append(scope, aml_method("_L0A", 0, AML_NOTSERIALIZED));
2082 aml_append(scope, aml_method("_L0B", 0, AML_NOTSERIALIZED));
2083 aml_append(scope, aml_method("_L0C", 0, AML_NOTSERIALIZED));
2084 aml_append(scope, aml_method("_L0D", 0, AML_NOTSERIALIZED));
2085 aml_append(scope, aml_method("_L0E", 0, AML_NOTSERIALIZED));
2086 aml_append(scope, aml_method("_L0F", 0, AML_NOTSERIALIZED));
2087 }
2088 aml_append(dsdt, scope);
2089
2090 bus = PC_MACHINE(machine)->bus;
2091 if (bus) {
2092 QLIST_FOREACH(bus, &bus->child, sibling) {
2093 uint8_t bus_num = pci_bus_num(bus);
2094 uint8_t numa_node = pci_bus_numa_node(bus);
2095
2096 /* look only for expander root buses */
2097 if (!pci_bus_is_root(bus)) {
2098 continue;
2099 }
2100
2101 if (bus_num < root_bus_limit) {
2102 root_bus_limit = bus_num - 1;
2103 }
2104
2105 scope = aml_scope("\\_SB");
2106 dev = aml_device("PC%.02X", bus_num);
2107 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
2108 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
2109 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
2110
2111 if (numa_node != NUMA_NODE_UNASSIGNED) {
2112 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node)));
2113 }
2114
2115 aml_append(dev, build_prt(false));
2116 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent),
2117 io_ranges, mem_ranges);
2118 aml_append(dev, aml_name_decl("_CRS", crs));
2119 aml_append(scope, dev);
2120 aml_append(dsdt, scope);
2121 }
2122 }
2123
2124 scope = aml_scope("\\_SB.PCI0");
2125 /* build PCI0._CRS */
2126 crs = aml_resource_template();
2127 aml_append(crs,
2128 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
2129 0x0000, 0x0, root_bus_limit,
2130 0x0000, root_bus_limit + 1));
2131 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08));
2132
2133 aml_append(crs,
2134 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
2135 AML_POS_DECODE, AML_ENTIRE_RANGE,
2136 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
2137
2138 crs_replace_with_free_ranges(io_ranges, 0x0D00, 0xFFFF);
2139 for (i = 0; i < io_ranges->len; i++) {
2140 entry = g_ptr_array_index(io_ranges, i);
2141 aml_append(crs,
2142 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
2143 AML_POS_DECODE, AML_ENTIRE_RANGE,
2144 0x0000, entry->base, entry->limit,
2145 0x0000, entry->limit - entry->base + 1));
2146 }
2147
2148 aml_append(crs,
2149 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
2150 AML_CACHEABLE, AML_READ_WRITE,
2151 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
2152
2153 crs_replace_with_free_ranges(mem_ranges, pci->w32.begin, pci->w32.end - 1);
2154 for (i = 0; i < mem_ranges->len; i++) {
2155 entry = g_ptr_array_index(mem_ranges, i);
2156 aml_append(crs,
2157 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
2158 AML_NON_CACHEABLE, AML_READ_WRITE,
2159 0, entry->base, entry->limit,
2160 0, entry->limit - entry->base + 1));
2161 }
2162
2163 if (pci->w64.begin) {
2164 aml_append(crs,
2165 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
2166 AML_CACHEABLE, AML_READ_WRITE,
2167 0, pci->w64.begin, pci->w64.end - 1, 0,
2168 pci->w64.end - pci->w64.begin));
2169 }
2170
2171 if (misc->tpm_version != TPM_VERSION_UNSPEC) {
2172 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
2173 TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
2174 }
2175 aml_append(scope, aml_name_decl("_CRS", crs));
2176
2177 /* reserve GPE0 block resources */
2178 dev = aml_device("GPE0");
2179 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
2180 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources")));
2181 /* device present, functioning, decoding, not shown in UI */
2182 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
2183 crs = aml_resource_template();
2184 aml_append(crs,
2185 aml_io(AML_DECODE16, pm->gpe0_blk, pm->gpe0_blk, 1, pm->gpe0_blk_len)
2186 );
2187 aml_append(dev, aml_name_decl("_CRS", crs));
2188 aml_append(scope, dev);
2189
2190 g_ptr_array_free(io_ranges, true);
2191 g_ptr_array_free(mem_ranges, true);
2192
2193 /* reserve PCIHP resources */
2194 if (pm->pcihp_io_len) {
2195 dev = aml_device("PHPR");
2196 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
2197 aml_append(dev,
2198 aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
2199 /* device present, functioning, decoding, not shown in UI */
2200 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
2201 crs = aml_resource_template();
2202 aml_append(crs,
2203 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1,
2204 pm->pcihp_io_len)
2205 );
2206 aml_append(dev, aml_name_decl("_CRS", crs));
2207 aml_append(scope, dev);
2208 }
2209 aml_append(dsdt, scope);
2210
2211 /* create S3_ / S4_ / S5_ packages if necessary */
2212 scope = aml_scope("\\");
2213 if (!pm->s3_disabled) {
2214 pkg = aml_package(4);
2215 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */
2216 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
2217 aml_append(pkg, aml_int(0)); /* reserved */
2218 aml_append(pkg, aml_int(0)); /* reserved */
2219 aml_append(scope, aml_name_decl("_S3", pkg));
2220 }
2221
2222 if (!pm->s4_disabled) {
2223 pkg = aml_package(4);
2224 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */
2225 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
2226 aml_append(pkg, aml_int(pm->s4_val));
2227 aml_append(pkg, aml_int(0)); /* reserved */
2228 aml_append(pkg, aml_int(0)); /* reserved */
2229 aml_append(scope, aml_name_decl("_S4", pkg));
2230 }
2231
2232 pkg = aml_package(4);
2233 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */
2234 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
2235 aml_append(pkg, aml_int(0)); /* reserved */
2236 aml_append(pkg, aml_int(0)); /* reserved */
2237 aml_append(scope, aml_name_decl("_S5", pkg));
2238 aml_append(dsdt, scope);
2239
2240 /* create fw_cfg node, unconditionally */
2241 {
2242 /* when using port i/o, the 8-bit data register *always* overlaps
2243 * with half of the 16-bit control register. Hence, the total size
2244 * of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the
2245 * DMA control register is located at FW_CFG_DMA_IO_BASE + 4 */
2246 uint8_t io_size = object_property_get_bool(OBJECT(pcms->fw_cfg),
2247 "dma_enabled", NULL) ?
2248 ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) :
2249 FW_CFG_CTL_SIZE;
2250
2251 scope = aml_scope("\\_SB.PCI0");
2252 dev = aml_device("FWCF");
2253
2254 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
2255
2256 /* device present, functioning, decoding, not shown in UI */
2257 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
2258
2259 crs = aml_resource_template();
2260 aml_append(crs,
2261 aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size)
2262 );
2263 aml_append(dev, aml_name_decl("_CRS", crs));
2264
2265 aml_append(scope, dev);
2266 aml_append(dsdt, scope);
2267 }
2268
2269 if (misc->applesmc_io_base) {
2270 scope = aml_scope("\\_SB.PCI0.ISA");
2271 dev = aml_device("SMC");
2272
2273 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
2274 /* device present, functioning, decoding, not shown in UI */
2275 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
2276
2277 crs = aml_resource_template();
2278 aml_append(crs,
2279 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base,
2280 0x01, APPLESMC_MAX_DATA_LENGTH)
2281 );
2282 aml_append(crs, aml_irq_no_flags(6));
2283 aml_append(dev, aml_name_decl("_CRS", crs));
2284
2285 aml_append(scope, dev);
2286 aml_append(dsdt, scope);
2287 }
2288
2289 if (misc->pvpanic_port) {
2290 scope = aml_scope("\\_SB.PCI0.ISA");
2291
2292 dev = aml_device("PEVT");
2293 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
2294
2295 crs = aml_resource_template();
2296 aml_append(crs,
2297 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1)
2298 );
2299 aml_append(dev, aml_name_decl("_CRS", crs));
2300
2301 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO,
2302 aml_int(misc->pvpanic_port), 1));
2303 field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
2304 aml_append(field, aml_named_field("PEPT", 8));
2305 aml_append(dev, field);
2306
2307 /* device present, functioning, decoding, shown in UI */
2308 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
2309
2310 method = aml_method("RDPT", 0, AML_NOTSERIALIZED);
2311 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0)));
2312 aml_append(method, aml_return(aml_local(0)));
2313 aml_append(dev, method);
2314
2315 method = aml_method("WRPT", 1, AML_NOTSERIALIZED);
2316 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT")));
2317 aml_append(dev, method);
2318
2319 aml_append(scope, dev);
2320 aml_append(dsdt, scope);
2321 }
2322
2323 sb_scope = aml_scope("\\_SB");
2324 {
2325 build_processor_devices(sb_scope, machine, pm);
2326
2327 build_memory_devices(sb_scope, nr_mem, pm->mem_hp_io_base,
2328 pm->mem_hp_io_len);
2329
2330 {
2331 Object *pci_host;
2332 PCIBus *bus = NULL;
2333
2334 pci_host = acpi_get_i386_pci_host();
2335 if (pci_host) {
2336 bus = PCI_HOST_BRIDGE(pci_host)->bus;
2337 }
2338
2339 if (bus) {
2340 Aml *scope = aml_scope("PCI0");
2341 /* Scan all PCI buses. Generate tables to support hotplug. */
2342 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
2343
2344 if (misc->tpm_version != TPM_VERSION_UNSPEC) {
2345 dev = aml_device("ISA.TPM");
2346 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C31")));
2347 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
2348 crs = aml_resource_template();
2349 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
2350 TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
2351 /*
2352 FIXME: TPM_TIS_IRQ=5 conflicts with PNP0C0F irqs,
2353 Rewrite to take IRQ from TPM device model and
2354 fix default IRQ value there to use some unused IRQ
2355 */
2356 /* aml_append(crs, aml_irq_no_flags(TPM_TIS_IRQ)); */
2357 aml_append(dev, aml_name_decl("_CRS", crs));
2358 aml_append(scope, dev);
2359 }
2360
2361 aml_append(sb_scope, scope);
2362 }
2363 }
2364 aml_append(dsdt, sb_scope);
2365 }
2366
2367 /* copy AML table into ACPI tables blob and patch header there */
2368 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
2369 build_header(linker, table_data,
2370 (void *)(table_data->data + table_data->len - dsdt->buf->len),
2371 "DSDT", dsdt->buf->len, 1, NULL, NULL);
2372 free_aml_allocator();
2373 }
2374
2375 static void
2376 build_hpet(GArray *table_data, GArray *linker)
2377 {
2378 Acpi20Hpet *hpet;
2379
2380 hpet = acpi_data_push(table_data, sizeof(*hpet));
2381 /* Note timer_block_id value must be kept in sync with value advertised by
2382 * emulated hpet
2383 */
2384 hpet->timer_block_id = cpu_to_le32(0x8086a201);
2385 hpet->addr.address = cpu_to_le64(HPET_BASE);
2386 build_header(linker, table_data,
2387 (void *)hpet, "HPET", sizeof(*hpet), 1, NULL, NULL);
2388 }
2389
2390 static void
2391 build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog)
2392 {
2393 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
2394 uint64_t log_area_start_address = acpi_data_len(tcpalog);
2395
2396 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
2397 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
2398 tcpa->log_area_start_address = cpu_to_le64(log_area_start_address);
2399
2400 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, 1,
2401 false /* high memory */);
2402
2403 /* log area start address to be filled by Guest linker */
2404 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
2405 ACPI_BUILD_TPMLOG_FILE,
2406 table_data, &tcpa->log_area_start_address,
2407 sizeof(tcpa->log_area_start_address));
2408
2409 build_header(linker, table_data,
2410 (void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL);
2411
2412 acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE);
2413 }
2414
2415 static void
2416 build_tpm2(GArray *table_data, GArray *linker)
2417 {
2418 Acpi20TPM2 *tpm2_ptr;
2419
2420 tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr);
2421
2422 tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT);
2423 tpm2_ptr->control_area_address = cpu_to_le64(0);
2424 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO);
2425
2426 build_header(linker, table_data,
2427 (void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4, NULL, NULL);
2428 }
2429
2430 typedef enum {
2431 MEM_AFFINITY_NOFLAGS = 0,
2432 MEM_AFFINITY_ENABLED = (1 << 0),
2433 MEM_AFFINITY_HOTPLUGGABLE = (1 << 1),
2434 MEM_AFFINITY_NON_VOLATILE = (1 << 2),
2435 } MemoryAffinityFlags;
2436
2437 static void
2438 acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
2439 uint64_t len, int node, MemoryAffinityFlags flags)
2440 {
2441 numamem->type = ACPI_SRAT_MEMORY;
2442 numamem->length = sizeof(*numamem);
2443 memset(numamem->proximity, 0, 4);
2444 numamem->proximity[0] = node;
2445 numamem->flags = cpu_to_le32(flags);
2446 numamem->base_addr = cpu_to_le64(base);
2447 numamem->range_length = cpu_to_le64(len);
2448 }
2449
2450 static void
2451 build_srat(GArray *table_data, GArray *linker, MachineState *machine)
2452 {
2453 AcpiSystemResourceAffinityTable *srat;
2454 AcpiSratProcessorAffinity *core;
2455 AcpiSratMemoryAffinity *numamem;
2456
2457 int i;
2458 uint64_t curnode;
2459 int srat_start, numa_start, slots;
2460 uint64_t mem_len, mem_base, next_base;
2461 MachineClass *mc = MACHINE_GET_CLASS(machine);
2462 CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
2463 PCMachineState *pcms = PC_MACHINE(machine);
2464 ram_addr_t hotplugabble_address_space_size =
2465 object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE,
2466 NULL);
2467
2468 srat_start = table_data->len;
2469
2470 srat = acpi_data_push(table_data, sizeof *srat);
2471 srat->reserved1 = cpu_to_le32(1);
2472
2473 for (i = 0; i < apic_ids->len; i++) {
2474 int apic_id = apic_ids->cpus[i].arch_id;
2475
2476 core = acpi_data_push(table_data, sizeof *core);
2477 core->type = ACPI_SRAT_PROCESSOR;
2478 core->length = sizeof(*core);
2479 core->local_apic_id = apic_id;
2480 curnode = pcms->node_cpu[apic_id];
2481 core->proximity_lo = curnode;
2482 memset(core->proximity_hi, 0, 3);
2483 core->local_sapic_eid = 0;
2484 core->flags = cpu_to_le32(1);
2485 }
2486
2487
2488 /* the memory map is a bit tricky, it contains at least one hole
2489 * from 640k-1M and possibly another one from 3.5G-4G.
2490 */
2491 next_base = 0;
2492 numa_start = table_data->len;
2493
2494 numamem = acpi_data_push(table_data, sizeof *numamem);
2495 acpi_build_srat_memory(numamem, 0, 640*1024, 0, MEM_AFFINITY_ENABLED);
2496 next_base = 1024 * 1024;
2497 for (i = 1; i < pcms->numa_nodes + 1; ++i) {
2498 mem_base = next_base;
2499 mem_len = pcms->node_mem[i - 1];
2500 if (i == 1) {
2501 mem_len -= 1024 * 1024;
2502 }
2503 next_base = mem_base + mem_len;
2504
2505 /* Cut out the ACPI_PCI hole */
2506 if (mem_base <= pcms->below_4g_mem_size &&
2507 next_base > pcms->below_4g_mem_size) {
2508 mem_len -= next_base - pcms->below_4g_mem_size;
2509 if (mem_len > 0) {
2510 numamem = acpi_data_push(table_data, sizeof *numamem);
2511 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
2512 MEM_AFFINITY_ENABLED);
2513 }
2514 mem_base = 1ULL << 32;
2515 mem_len = next_base - pcms->below_4g_mem_size;
2516 next_base += (1ULL << 32) - pcms->below_4g_mem_size;
2517 }
2518 numamem = acpi_data_push(table_data, sizeof *numamem);
2519 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
2520 MEM_AFFINITY_ENABLED);
2521 }
2522 slots = (table_data->len - numa_start) / sizeof *numamem;
2523 for (; slots < pcms->numa_nodes + 2; slots++) {
2524 numamem = acpi_data_push(table_data, sizeof *numamem);
2525 acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
2526 }
2527
2528 /*
2529 * Entry is required for Windows to enable memory hotplug in OS.
2530 * Memory devices may override proximity set by this entry,
2531 * providing _PXM method if necessary.
2532 */
2533 if (hotplugabble_address_space_size) {
2534 numamem = acpi_data_push(table_data, sizeof *numamem);
2535 acpi_build_srat_memory(numamem, pcms->hotplug_memory.base,
2536 hotplugabble_address_space_size, 0,
2537 MEM_AFFINITY_HOTPLUGGABLE |
2538 MEM_AFFINITY_ENABLED);
2539 }
2540
2541 build_header(linker, table_data,
2542 (void *)(table_data->data + srat_start),
2543 "SRAT",
2544 table_data->len - srat_start, 1, NULL, NULL);
2545 g_free(apic_ids);
2546 }
2547
2548 static void
2549 build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
2550 {
2551 AcpiTableMcfg *mcfg;
2552 const char *sig;
2553 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
2554
2555 mcfg = acpi_data_push(table_data, len);
2556 mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base);
2557 /* Only a single allocation so no need to play with segments */
2558 mcfg->allocation[0].pci_segment = cpu_to_le16(0);
2559 mcfg->allocation[0].start_bus_number = 0;
2560 mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1);
2561
2562 /* MCFG is used for ECAM which can be enabled or disabled by guest.
2563 * To avoid table size changes (which create migration issues),
2564 * always create the table even if there are no allocations,
2565 * but set the signature to a reserved value in this case.
2566 * ACPI spec requires OSPMs to ignore such tables.
2567 */
2568 if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) {
2569 /* Reserved signature: ignored by OSPM */
2570 sig = "QEMU";
2571 } else {
2572 sig = "MCFG";
2573 }
2574 build_header(linker, table_data, (void *)mcfg, sig, len, 1, NULL, NULL);
2575 }
2576
2577 static void
2578 build_dmar_q35(GArray *table_data, GArray *linker)
2579 {
2580 int dmar_start = table_data->len;
2581
2582 AcpiTableDmar *dmar;
2583 AcpiDmarHardwareUnit *drhd;
2584
2585 dmar = acpi_data_push(table_data, sizeof(*dmar));
2586 dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
2587 dmar->flags = 0; /* No intr_remap for now */
2588
2589 /* DMAR Remapping Hardware Unit Definition structure */
2590 drhd = acpi_data_push(table_data, sizeof(*drhd));
2591 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
2592 drhd->length = cpu_to_le16(sizeof(*drhd)); /* No device scope now */
2593 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
2594 drhd->pci_segment = cpu_to_le16(0);
2595 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
2596
2597 build_header(linker, table_data, (void *)(table_data->data + dmar_start),
2598 "DMAR", table_data->len - dmar_start, 1, NULL, NULL);
2599 }
2600
2601 static GArray *
2602 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
2603 {
2604 AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
2605
2606 bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,
2607 true /* fseg memory */);
2608
2609 memcpy(&rsdp->signature, "RSD PTR ", 8);
2610 memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
2611 rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
2612 /* Address to be filled by Guest linker */
2613 bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
2614 ACPI_BUILD_TABLE_FILE,
2615 rsdp_table, &rsdp->rsdt_physical_address,
2616 sizeof rsdp->rsdt_physical_address);
2617 rsdp->checksum = 0;
2618 /* Checksum to be filled by Guest linker */
2619 bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
2620 rsdp_table, rsdp, sizeof *rsdp,
2621 &rsdp->checksum);
2622
2623 return rsdp_table;
2624 }
2625
2626 typedef
2627 struct AcpiBuildState {
2628 /* Copy of table in RAM (for patching). */
2629 MemoryRegion *table_mr;
2630 /* Is table patched? */
2631 uint8_t patched;
2632 void *rsdp;
2633 MemoryRegion *rsdp_mr;
2634 MemoryRegion *linker_mr;
2635 } AcpiBuildState;
2636
2637 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
2638 {
2639 Object *pci_host;
2640 QObject *o;
2641
2642 pci_host = acpi_get_i386_pci_host();
2643 g_assert(pci_host);
2644
2645 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
2646 if (!o) {
2647 return false;
2648 }
2649 mcfg->mcfg_base = qint_get_int(qobject_to_qint(o));
2650 qobject_decref(o);
2651
2652 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
2653 assert(o);
2654 mcfg->mcfg_size = qint_get_int(qobject_to_qint(o));
2655 qobject_decref(o);
2656 return true;
2657 }
2658
2659 static bool acpi_has_iommu(void)
2660 {
2661 bool ambiguous;
2662 Object *intel_iommu;
2663
2664 intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
2665 &ambiguous);
2666 return intel_iommu && !ambiguous;
2667 }
2668
2669 static
2670 void acpi_build(AcpiBuildTables *tables, MachineState *machine)
2671 {
2672 PCMachineState *pcms = PC_MACHINE(machine);
2673 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
2674 GArray *table_offsets;
2675 unsigned facs, dsdt, rsdt, fadt;
2676 AcpiPmInfo pm;
2677 AcpiMiscInfo misc;
2678 AcpiMcfgInfo mcfg;
2679 PcPciInfo pci;
2680 uint8_t *u;
2681 size_t aml_len = 0;
2682 GArray *tables_blob = tables->table_data;
2683 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL };
2684
2685 acpi_get_pm_info(&pm);
2686 acpi_get_misc_info(&misc);
2687 acpi_get_pci_info(&pci);
2688 acpi_get_slic_oem(&slic_oem);
2689
2690 table_offsets = g_array_new(false, true /* clear */,
2691 sizeof(uint32_t));
2692 ACPI_BUILD_DPRINTF("init ACPI tables\n");
2693
2694 bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
2695 64 /* Ensure FACS is aligned */,
2696 false /* high memory */);
2697
2698 /*
2699 * FACS is pointed to by FADT.
2700 * We place it first since it's the only table that has alignment
2701 * requirements.
2702 */
2703 facs = tables_blob->len;
2704 build_facs(tables_blob, tables->linker);
2705
2706 /* DSDT is pointed to by FADT */
2707 dsdt = tables_blob->len;
2708 build_dsdt(tables_blob, tables->linker, &pm, &misc, &pci, machine);
2709
2710 /* Count the size of the DSDT and SSDT, we will need it for legacy
2711 * sizing of ACPI tables.
2712 */
2713 aml_len += tables_blob->len - dsdt;
2714
2715 /* ACPI tables pointed to by RSDT */
2716 fadt = tables_blob->len;
2717 acpi_add_table(table_offsets, tables_blob);
2718 build_fadt(tables_blob, tables->linker, &pm, facs, dsdt,
2719 slic_oem.id, slic_oem.table_id);
2720 aml_len += tables_blob->len - fadt;
2721
2722 acpi_add_table(table_offsets, tables_blob);
2723 build_madt(tables_blob, tables->linker, pcms);
2724
2725 if (misc.has_hpet) {
2726 acpi_add_table(table_offsets, tables_blob);
2727 build_hpet(tables_blob, tables->linker);
2728 }
2729 if (misc.tpm_version != TPM_VERSION_UNSPEC) {
2730 acpi_add_table(table_offsets, tables_blob);
2731 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
2732
2733 if (misc.tpm_version == TPM_VERSION_2_0) {
2734 acpi_add_table(table_offsets, tables_blob);
2735 build_tpm2(tables_blob, tables->linker);
2736 }
2737 }
2738 if (pcms->numa_nodes) {
2739 acpi_add_table(table_offsets, tables_blob);
2740 build_srat(tables_blob, tables->linker, machine);
2741 }
2742 if (acpi_get_mcfg(&mcfg)) {
2743 acpi_add_table(table_offsets, tables_blob);
2744 build_mcfg_q35(tables_blob, tables->linker, &mcfg);
2745 }
2746 if (acpi_has_iommu()) {
2747 acpi_add_table(table_offsets, tables_blob);
2748 build_dmar_q35(tables_blob, tables->linker);
2749 }
2750 if (pcms->acpi_nvdimm_state.is_enabled) {
2751 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker);
2752 }
2753
2754 /* Add tables supplied by user (if any) */
2755 for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
2756 unsigned len = acpi_table_len(u);
2757
2758 acpi_add_table(table_offsets, tables_blob);
2759 g_array_append_vals(tables_blob, u, len);
2760 }
2761
2762 /* RSDT is pointed to by RSDP */
2763 rsdt = tables_blob->len;
2764 build_rsdt(tables_blob, tables->linker, table_offsets,
2765 slic_oem.id, slic_oem.table_id);
2766
2767 /* RSDP is in FSEG memory, so allocate it separately */
2768 build_rsdp(tables->rsdp, tables->linker, rsdt);
2769
2770 /* We'll expose it all to Guest so we want to reduce
2771 * chance of size changes.
2772 *
2773 * We used to align the tables to 4k, but of course this would
2774 * too simple to be enough. 4k turned out to be too small an
2775 * alignment very soon, and in fact it is almost impossible to
2776 * keep the table size stable for all (max_cpus, max_memory_slots)
2777 * combinations. So the table size is always 64k for pc-i440fx-2.1
2778 * and we give an error if the table grows beyond that limit.
2779 *
2780 * We still have the problem of migrating from "-M pc-i440fx-2.0". For
2781 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
2782 * than 2.0 and we can always pad the smaller tables with zeros. We can
2783 * then use the exact size of the 2.0 tables.
2784 *
2785 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
2786 */
2787 if (pcmc->legacy_acpi_table_size) {
2788 /* Subtracting aml_len gives the size of fixed tables. Then add the
2789 * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
2790 */
2791 int legacy_aml_len =
2792 pcmc->legacy_acpi_table_size +
2793 ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
2794 int legacy_table_size =
2795 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
2796 ACPI_BUILD_ALIGN_SIZE);
2797 if (tables_blob->len > legacy_table_size) {
2798 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
2799 error_report("Warning: migration may not work.");
2800 }
2801 g_array_set_size(tables_blob, legacy_table_size);
2802 } else {
2803 /* Make sure we have a buffer in case we need to resize the tables. */
2804 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
2805 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
2806 error_report("Warning: ACPI tables are larger than 64k.");
2807 error_report("Warning: migration may not work.");
2808 error_report("Warning: please remove CPUs, NUMA nodes, "
2809 "memory slots or PCI bridges.");
2810 }
2811 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
2812 }
2813
2814 acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE);
2815
2816 /* Cleanup memory that's no longer used. */
2817 g_array_free(table_offsets, true);
2818 }
2819
2820 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
2821 {
2822 uint32_t size = acpi_data_len(data);
2823
2824 /* Make sure RAM size is correct - in case it got changed e.g. by migration */
2825 memory_region_ram_resize(mr, size, &error_abort);
2826
2827 memcpy(memory_region_get_ram_ptr(mr), data->data, size);
2828 memory_region_set_dirty(mr, 0, size);
2829 }
2830
2831 static void acpi_build_update(void *build_opaque)
2832 {
2833 AcpiBuildState *build_state = build_opaque;
2834 AcpiBuildTables tables;
2835
2836 /* No state to update or already patched? Nothing to do. */
2837 if (!build_state || build_state->patched) {
2838 return;
2839 }
2840 build_state->patched = 1;
2841
2842 acpi_build_tables_init(&tables);
2843
2844 acpi_build(&tables, MACHINE(qdev_get_machine()));
2845
2846 acpi_ram_update(build_state->table_mr, tables.table_data);
2847
2848 if (build_state->rsdp) {
2849 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp));
2850 } else {
2851 acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
2852 }
2853
2854 acpi_ram_update(build_state->linker_mr, tables.linker);
2855 acpi_build_tables_cleanup(&tables, true);
2856 }
2857
2858 static void acpi_build_reset(void *build_opaque)
2859 {
2860 AcpiBuildState *build_state = build_opaque;
2861 build_state->patched = 0;
2862 }
2863
2864 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
2865 GArray *blob, const char *name,
2866 uint64_t max_size)
2867 {
2868 return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
2869 name, acpi_build_update, build_state);
2870 }
2871
2872 static const VMStateDescription vmstate_acpi_build = {
2873 .name = "acpi_build",
2874 .version_id = 1,
2875 .minimum_version_id = 1,
2876 .fields = (VMStateField[]) {
2877 VMSTATE_UINT8(patched, AcpiBuildState),
2878 VMSTATE_END_OF_LIST()
2879 },
2880 };
2881
2882 void acpi_setup(void)
2883 {
2884 PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
2885 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
2886 AcpiBuildTables tables;
2887 AcpiBuildState *build_state;
2888
2889 if (!pcms->fw_cfg) {
2890 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
2891 return;
2892 }
2893
2894 if (!pcmc->has_acpi_build) {
2895 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
2896 return;
2897 }
2898
2899 if (!acpi_enabled) {
2900 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
2901 return;
2902 }
2903
2904 build_state = g_malloc0(sizeof *build_state);
2905
2906 acpi_set_pci_info();
2907
2908 acpi_build_tables_init(&tables);
2909 acpi_build(&tables, MACHINE(pcms));
2910
2911 /* Now expose it all to Guest */
2912 build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
2913 ACPI_BUILD_TABLE_FILE,
2914 ACPI_BUILD_TABLE_MAX_SIZE);
2915 assert(build_state->table_mr != NULL);
2916
2917 build_state->linker_mr =
2918 acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
2919
2920 fw_cfg_add_file(pcms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
2921 tables.tcpalog->data, acpi_data_len(tables.tcpalog));
2922
2923 if (!pcmc->rsdp_in_ram) {
2924 /*
2925 * Keep for compatibility with old machine types.
2926 * Though RSDP is small, its contents isn't immutable, so
2927 * we'll update it along with the rest of tables on guest access.
2928 */
2929 uint32_t rsdp_size = acpi_data_len(tables.rsdp);
2930
2931 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size);
2932 fw_cfg_add_file_callback(pcms->fw_cfg, ACPI_BUILD_RSDP_FILE,
2933 acpi_build_update, build_state,
2934 build_state->rsdp, rsdp_size);
2935 build_state->rsdp_mr = NULL;
2936 } else {
2937 build_state->rsdp = NULL;
2938 build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
2939 ACPI_BUILD_RSDP_FILE, 0);
2940 }
2941
2942 qemu_register_reset(acpi_build_reset, build_state);
2943 acpi_build_reset(build_state);
2944 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state);
2945
2946 /* Cleanup tables but don't free the memory: we track it
2947 * in build_state.
2948 */
2949 acpi_build_tables_cleanup(&tables, false);
2950 }
QEmu