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scsi: Address spurious clang warning
[qemu.git] / hw / i386 / acpi-build.c
blob236a20eaa8cb2cd51e9fc186b09d409a562665e3
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 "qapi/qmp/qnum.h"
26 #include "acpi-build.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 "target/i386/cpu.h"
33 #include "hw/misc/pvpanic.h"
34 #include "hw/timer/hpet.h"
35 #include "hw/acpi/acpi-defs.h"
36 #include "hw/acpi/acpi.h"
37 #include "hw/acpi/cpu.h"
38 #include "hw/nvram/fw_cfg.h"
39 #include "hw/acpi/bios-linker-loader.h"
40 #include "hw/loader.h"
41 #include "hw/isa/isa.h"
42 #include "hw/block/fdc.h"
43 #include "hw/acpi/memory_hotplug.h"
44 #include "sysemu/tpm.h"
45 #include "hw/acpi/tpm.h"
46 #include "hw/acpi/vmgenid.h"
47 #include "sysemu/tpm_backend.h"
48 #include "hw/timer/mc146818rtc_regs.h"
49 #include "hw/mem/memory-device.h"
50 #include "sysemu/numa.h"
51
52 /* Supported chipsets: */
53 #include "hw/acpi/piix4.h"
54 #include "hw/acpi/pcihp.h"
55 #include "hw/i386/ich9.h"
56 #include "hw/pci/pci_bus.h"
57 #include "hw/pci-host/q35.h"
58 #include "hw/i386/x86-iommu.h"
59
60 #include "hw/acpi/aml-build.h"
61
62 #include "qom/qom-qobject.h"
63 #include "hw/i386/amd_iommu.h"
64 #include "hw/i386/intel_iommu.h"
65
66 #include "hw/acpi/ipmi.h"
67
68 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
69 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
70 * a little bit, there should be plenty of free space since the DSDT
71 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
72 */
73 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
74 #define ACPI_BUILD_ALIGN_SIZE 0x1000
75
76 #define ACPI_BUILD_TABLE_SIZE 0x20000
77
78 /* #define DEBUG_ACPI_BUILD */
79 #ifdef DEBUG_ACPI_BUILD
80 #define ACPI_BUILD_DPRINTF(fmt, ...) \
81 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
82 #else
83 #define ACPI_BUILD_DPRINTF(fmt, ...)
84 #endif
85
86 /* Default IOAPIC ID */
87 #define ACPI_BUILD_IOAPIC_ID 0x0
88
89 typedef struct AcpiMcfgInfo {
90 uint64_t mcfg_base;
91 uint32_t mcfg_size;
92 } AcpiMcfgInfo;
93
94 typedef struct AcpiPmInfo {
95 bool s3_disabled;
96 bool s4_disabled;
97 bool pcihp_bridge_en;
98 uint8_t s4_val;
99 AcpiFadtData fadt;
100 uint16_t cpu_hp_io_base;
101 uint16_t pcihp_io_base;
102 uint16_t pcihp_io_len;
103 } AcpiPmInfo;
104
105 typedef struct AcpiMiscInfo {
106 bool is_piix4;
107 bool has_hpet;
108 TPMVersion tpm_version;
109 const unsigned char *dsdt_code;
110 unsigned dsdt_size;
111 uint16_t pvpanic_port;
112 uint16_t applesmc_io_base;
113 } AcpiMiscInfo;
114
115 typedef struct AcpiBuildPciBusHotplugState {
116 GArray *device_table;
117 GArray *notify_table;
118 struct AcpiBuildPciBusHotplugState *parent;
119 bool pcihp_bridge_en;
120 } AcpiBuildPciBusHotplugState;
121
122 static void init_common_fadt_data(Object *o, AcpiFadtData *data)
123 {
124 uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL);
125 AmlAddressSpace as = AML_AS_SYSTEM_IO;
126 AcpiFadtData fadt = {
127 .rev = 3,
128 .flags =
129 (1 << ACPI_FADT_F_WBINVD) |
130 (1 << ACPI_FADT_F_PROC_C1) |
131 (1 << ACPI_FADT_F_SLP_BUTTON) |
132 (1 << ACPI_FADT_F_RTC_S4) |
133 (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) |
134 /* APIC destination mode ("Flat Logical") has an upper limit of 8
135 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be
136 * used
137 */
138 ((max_cpus > 8) ? (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0),
139 .int_model = 1 /* Multiple APIC */,
140 .rtc_century = RTC_CENTURY,
141 .plvl2_lat = 0xfff /* C2 state not supported */,
142 .plvl3_lat = 0xfff /* C3 state not supported */,
143 .smi_cmd = ACPI_PORT_SMI_CMD,
144 .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL),
145 .acpi_enable_cmd =
146 object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL),
147 .acpi_disable_cmd =
148 object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL),
149 .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io },
150 .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8,
151 .address = io + 0x04 },
152 .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 },
153 .gpe0_blk = { .space_id = as, .bit_width =
154 object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8,
155 .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL)
156 },
157 };
158 *data = fadt;
159 }
160
161 static void acpi_get_pm_info(AcpiPmInfo *pm)
162 {
163 Object *piix = piix4_pm_find();
164 Object *lpc = ich9_lpc_find();
165 Object *obj = piix ? piix : lpc;
166 QObject *o;
167 pm->cpu_hp_io_base = 0;
168 pm->pcihp_io_base = 0;
169 pm->pcihp_io_len = 0;
170
171 init_common_fadt_data(obj, &pm->fadt);
172 if (piix) {
173 /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */
174 pm->fadt.rev = 1;
175 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE;
176 pm->pcihp_io_base =
177 object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL);
178 pm->pcihp_io_len =
179 object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL);
180 }
181 if (lpc) {
182 struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO,
183 .bit_width = 8, .address = ICH9_RST_CNT_IOPORT };
184 pm->fadt.reset_reg = r;
185 pm->fadt.reset_val = 0xf;
186 pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP;
187 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE;
188 }
189 assert(obj);
190
191 /* The above need not be conditional on machine type because the reset port
192 * happens to be the same on PIIX (pc) and ICH9 (q35). */
193 QEMU_BUILD_BUG_ON(ICH9_RST_CNT_IOPORT != RCR_IOPORT);
194
195 /* Fill in optional s3/s4 related properties */
196 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
197 if (o) {
198 pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o));
199 } else {
200 pm->s3_disabled = false;
201 }
202 qobject_unref(o);
203 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
204 if (o) {
205 pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o));
206 } else {
207 pm->s4_disabled = false;
208 }
209 qobject_unref(o);
210 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
211 if (o) {
212 pm->s4_val = qnum_get_uint(qobject_to(QNum, o));
213 } else {
214 pm->s4_val = false;
215 }
216 qobject_unref(o);
217
218 pm->pcihp_bridge_en =
219 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
220 NULL);
221 }
222
223 static void acpi_get_misc_info(AcpiMiscInfo *info)
224 {
225 Object *piix = piix4_pm_find();
226 Object *lpc = ich9_lpc_find();
227 assert(!!piix != !!lpc);
228
229 if (piix) {
230 info->is_piix4 = true;
231 }
232 if (lpc) {
233 info->is_piix4 = false;
234 }
235
236 info->has_hpet = hpet_find();
237 info->tpm_version = tpm_get_version(tpm_find());
238 info->pvpanic_port = pvpanic_port();
239 info->applesmc_io_base = applesmc_port();
240 }
241
242 /*
243 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE.
244 * On i386 arch we only have two pci hosts, so we can look only for them.
245 */
246 static Object *acpi_get_i386_pci_host(void)
247 {
248 PCIHostState *host;
249
250 host = OBJECT_CHECK(PCIHostState,
251 object_resolve_path("/machine/i440fx", NULL),
252 TYPE_PCI_HOST_BRIDGE);
253 if (!host) {
254 host = OBJECT_CHECK(PCIHostState,
255 object_resolve_path("/machine/q35", NULL),
256 TYPE_PCI_HOST_BRIDGE);
257 }
258
259 return OBJECT(host);
260 }
261
262 static void acpi_get_pci_holes(Range *hole, Range *hole64)
263 {
264 Object *pci_host;
265
266 pci_host = acpi_get_i386_pci_host();
267 g_assert(pci_host);
268
269 range_set_bounds1(hole,
270 object_property_get_uint(pci_host,
271 PCI_HOST_PROP_PCI_HOLE_START,
272 NULL),
273 object_property_get_uint(pci_host,
274 PCI_HOST_PROP_PCI_HOLE_END,
275 NULL));
276 range_set_bounds1(hole64,
277 object_property_get_uint(pci_host,
278 PCI_HOST_PROP_PCI_HOLE64_START,
279 NULL),
280 object_property_get_uint(pci_host,
281 PCI_HOST_PROP_PCI_HOLE64_END,
282 NULL));
283 }
284
285 static void acpi_align_size(GArray *blob, unsigned align)
286 {
287 /* Align size to multiple of given size. This reduces the chance
288 * we need to change size in the future (breaking cross version migration).
289 */
290 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
291 }
292
293 /* FACS */
294 static void
295 build_facs(GArray *table_data, BIOSLinker *linker)
296 {
297 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
298 memcpy(&facs->signature, "FACS", 4);
299 facs->length = cpu_to_le32(sizeof(*facs));
300 }
301
302 void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
303 const CPUArchIdList *apic_ids, GArray *entry)
304 {
305 uint32_t apic_id = apic_ids->cpus[uid].arch_id;
306
307 /* ACPI spec says that LAPIC entry for non present
308 * CPU may be omitted from MADT or it must be marked
309 * as disabled. However omitting non present CPU from
310 * MADT breaks hotplug on linux. So possible CPUs
311 * should be put in MADT but kept disabled.
312 */
313 if (apic_id < 255) {
314 AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic);
315
316 apic->type = ACPI_APIC_PROCESSOR;
317 apic->length = sizeof(*apic);
318 apic->processor_id = uid;
319 apic->local_apic_id = apic_id;
320 if (apic_ids->cpus[uid].cpu != NULL) {
321 apic->flags = cpu_to_le32(1);
322 } else {
323 apic->flags = cpu_to_le32(0);
324 }
325 } else {
326 AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic);
327
328 apic->type = ACPI_APIC_LOCAL_X2APIC;
329 apic->length = sizeof(*apic);
330 apic->uid = cpu_to_le32(uid);
331 apic->x2apic_id = cpu_to_le32(apic_id);
332 if (apic_ids->cpus[uid].cpu != NULL) {
333 apic->flags = cpu_to_le32(1);
334 } else {
335 apic->flags = cpu_to_le32(0);
336 }
337 }
338 }
339
340 static void
341 build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
342 {
343 MachineClass *mc = MACHINE_GET_CLASS(pcms);
344 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
345 int madt_start = table_data->len;
346 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev);
347 AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev);
348 bool x2apic_mode = false;
349
350 AcpiMultipleApicTable *madt;
351 AcpiMadtIoApic *io_apic;
352 AcpiMadtIntsrcovr *intsrcovr;
353 int i;
354
355 madt = acpi_data_push(table_data, sizeof *madt);
356 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
357 madt->flags = cpu_to_le32(1);
358
359 for (i = 0; i < apic_ids->len; i++) {
360 adevc->madt_cpu(adev, i, apic_ids, table_data);
361 if (apic_ids->cpus[i].arch_id > 254) {
362 x2apic_mode = true;
363 }
364 }
365
366 io_apic = acpi_data_push(table_data, sizeof *io_apic);
367 io_apic->type = ACPI_APIC_IO;
368 io_apic->length = sizeof(*io_apic);
369 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID;
370 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
371 io_apic->interrupt = cpu_to_le32(0);
372
373 if (pcms->apic_xrupt_override) {
374 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
375 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
376 intsrcovr->length = sizeof(*intsrcovr);
377 intsrcovr->source = 0;
378 intsrcovr->gsi = cpu_to_le32(2);
379 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
380 }
381 for (i = 1; i < 16; i++) {
382 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
383 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
384 /* No need for a INT source override structure. */
385 continue;
386 }
387 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
388 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
389 intsrcovr->length = sizeof(*intsrcovr);
390 intsrcovr->source = i;
391 intsrcovr->gsi = cpu_to_le32(i);
392 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
393 }
394
395 if (x2apic_mode) {
396 AcpiMadtLocalX2ApicNmi *local_nmi;
397
398 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
399 local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI;
400 local_nmi->length = sizeof(*local_nmi);
401 local_nmi->uid = 0xFFFFFFFF; /* all processors */
402 local_nmi->flags = cpu_to_le16(0);
403 local_nmi->lint = 1; /* ACPI_LINT1 */
404 } else {
405 AcpiMadtLocalNmi *local_nmi;
406
407 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
408 local_nmi->type = ACPI_APIC_LOCAL_NMI;
409 local_nmi->length = sizeof(*local_nmi);
410 local_nmi->processor_id = 0xff; /* all processors */
411 local_nmi->flags = cpu_to_le16(0);
412 local_nmi->lint = 1; /* ACPI_LINT1 */
413 }
414
415 build_header(linker, table_data,
416 (void *)(table_data->data + madt_start), "APIC",
417 table_data->len - madt_start, 1, NULL, NULL);
418 }
419
420 static void build_append_pcihp_notify_entry(Aml *method, int slot)
421 {
422 Aml *if_ctx;
423 int32_t devfn = PCI_DEVFN(slot, 0);
424
425 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL));
426 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1)));
427 aml_append(method, if_ctx);
428 }
429
430 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
431 bool pcihp_bridge_en)
432 {
433 Aml *dev, *notify_method = NULL, *method;
434 QObject *bsel;
435 PCIBus *sec;
436 int i;
437
438 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
439 if (bsel) {
440 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
441
442 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
443 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED);
444 }
445
446 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
447 DeviceClass *dc;
448 PCIDeviceClass *pc;
449 PCIDevice *pdev = bus->devices[i];
450 int slot = PCI_SLOT(i);
451 bool hotplug_enabled_dev;
452 bool bridge_in_acpi;
453
454 if (!pdev) {
455 if (bsel) { /* add hotplug slots for non present devices */
456 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
457 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
458 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
459 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
460 aml_append(method,
461 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
462 );
463 aml_append(dev, method);
464 aml_append(parent_scope, dev);
465
466 build_append_pcihp_notify_entry(notify_method, slot);
467 }
468 continue;
469 }
470
471 pc = PCI_DEVICE_GET_CLASS(pdev);
472 dc = DEVICE_GET_CLASS(pdev);
473
474 /* When hotplug for bridges is enabled, bridges are
475 * described in ACPI separately (see build_pci_bus_end).
476 * In this case they aren't themselves hot-pluggable.
477 * Hotplugged bridges *are* hot-pluggable.
478 */
479 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en &&
480 !DEVICE(pdev)->hotplugged;
481
482 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi;
483
484 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
485 continue;
486 }
487
488 /* start to compose PCI slot descriptor */
489 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
490 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
491
492 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
493 /* add VGA specific AML methods */
494 int s3d;
495
496 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
497 s3d = 3;
498 } else {
499 s3d = 0;
500 }
501
502 method = aml_method("_S1D", 0, AML_NOTSERIALIZED);
503 aml_append(method, aml_return(aml_int(0)));
504 aml_append(dev, method);
505
506 method = aml_method("_S2D", 0, AML_NOTSERIALIZED);
507 aml_append(method, aml_return(aml_int(0)));
508 aml_append(dev, method);
509
510 method = aml_method("_S3D", 0, AML_NOTSERIALIZED);
511 aml_append(method, aml_return(aml_int(s3d)));
512 aml_append(dev, method);
513 } else if (hotplug_enabled_dev) {
514 /* add _SUN/_EJ0 to make slot hotpluggable */
515 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
516
517 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
518 aml_append(method,
519 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
520 );
521 aml_append(dev, method);
522
523 if (bsel) {
524 build_append_pcihp_notify_entry(notify_method, slot);
525 }
526 } else if (bridge_in_acpi) {
527 /*
528 * device is coldplugged bridge,
529 * add child device descriptions into its scope
530 */
531 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
532
533 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en);
534 }
535 /* slot descriptor has been composed, add it into parent context */
536 aml_append(parent_scope, dev);
537 }
538
539 if (bsel) {
540 aml_append(parent_scope, notify_method);
541 }
542
543 /* Append PCNT method to notify about events on local and child buses.
544 * Add unconditionally for root since DSDT expects it.
545 */
546 method = aml_method("PCNT", 0, AML_NOTSERIALIZED);
547
548 /* If bus supports hotplug select it and notify about local events */
549 if (bsel) {
550 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
551
552 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM")));
553 aml_append(method,
554 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */)
555 );
556 aml_append(method,
557 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */)
558 );
559 }
560
561 /* Notify about child bus events in any case */
562 if (pcihp_bridge_en) {
563 QLIST_FOREACH(sec, &bus->child, sibling) {
564 int32_t devfn = sec->parent_dev->devfn;
565
566 if (pci_bus_is_root(sec) || pci_bus_is_express(sec)) {
567 continue;
568 }
569
570 aml_append(method, aml_name("^S%.02X.PCNT", devfn));
571 }
572 }
573 aml_append(parent_scope, method);
574 qobject_unref(bsel);
575 }
576
577 /**
578 * build_prt_entry:
579 * @link_name: link name for PCI route entry
580 *
581 * build AML package containing a PCI route entry for @link_name
582 */
583 static Aml *build_prt_entry(const char *link_name)
584 {
585 Aml *a_zero = aml_int(0);
586 Aml *pkg = aml_package(4);
587 aml_append(pkg, a_zero);
588 aml_append(pkg, a_zero);
589 aml_append(pkg, aml_name("%s", link_name));
590 aml_append(pkg, a_zero);
591 return pkg;
592 }
593
594 /*
595 * initialize_route - Initialize the interrupt routing rule
596 * through a specific LINK:
597 * if (lnk_idx == idx)
598 * route using link 'link_name'
599 */
600 static Aml *initialize_route(Aml *route, const char *link_name,
601 Aml *lnk_idx, int idx)
602 {
603 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx)));
604 Aml *pkg = build_prt_entry(link_name);
605
606 aml_append(if_ctx, aml_store(pkg, route));
607
608 return if_ctx;
609 }
610
611 /*
612 * build_prt - Define interrupt rounting rules
613 *
614 * Returns an array of 128 routes, one for each device,
615 * based on device location.
616 * The main goal is to equaly distribute the interrupts
617 * over the 4 existing ACPI links (works only for i440fx).
618 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]".
619 *
620 */
621 static Aml *build_prt(bool is_pci0_prt)
622 {
623 Aml *method, *while_ctx, *pin, *res;
624
625 method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
626 res = aml_local(0);
627 pin = aml_local(1);
628 aml_append(method, aml_store(aml_package(128), res));
629 aml_append(method, aml_store(aml_int(0), pin));
630
631 /* while (pin < 128) */
632 while_ctx = aml_while(aml_lless(pin, aml_int(128)));
633 {
634 Aml *slot = aml_local(2);
635 Aml *lnk_idx = aml_local(3);
636 Aml *route = aml_local(4);
637
638 /* slot = pin >> 2 */
639 aml_append(while_ctx,
640 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot));
641 /* lnk_idx = (slot + pin) & 3 */
642 aml_append(while_ctx,
643 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL),
644 lnk_idx));
645
646 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */
647 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0));
648 if (is_pci0_prt) {
649 Aml *if_device_1, *if_pin_4, *else_pin_4;
650
651 /* device 1 is the power-management device, needs SCI */
652 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1)));
653 {
654 if_pin_4 = aml_if(aml_equal(pin, aml_int(4)));
655 {
656 aml_append(if_pin_4,
657 aml_store(build_prt_entry("LNKS"), route));
658 }
659 aml_append(if_device_1, if_pin_4);
660 else_pin_4 = aml_else();
661 {
662 aml_append(else_pin_4,
663 aml_store(build_prt_entry("LNKA"), route));
664 }
665 aml_append(if_device_1, else_pin_4);
666 }
667 aml_append(while_ctx, if_device_1);
668 } else {
669 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1));
670 }
671 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2));
672 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3));
673
674 /* route[0] = 0x[slot]FFFF */
675 aml_append(while_ctx,
676 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF),
677 NULL),
678 aml_index(route, aml_int(0))));
679 /* route[1] = pin & 3 */
680 aml_append(while_ctx,
681 aml_store(aml_and(pin, aml_int(3), NULL),
682 aml_index(route, aml_int(1))));
683 /* res[pin] = route */
684 aml_append(while_ctx, aml_store(route, aml_index(res, pin)));
685 /* pin++ */
686 aml_append(while_ctx, aml_increment(pin));
687 }
688 aml_append(method, while_ctx);
689 /* return res*/
690 aml_append(method, aml_return(res));
691
692 return method;
693 }
694
695 typedef struct CrsRangeEntry {
696 uint64_t base;
697 uint64_t limit;
698 } CrsRangeEntry;
699
700 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit)
701 {
702 CrsRangeEntry *entry;
703
704 entry = g_malloc(sizeof(*entry));
705 entry->base = base;
706 entry->limit = limit;
707
708 g_ptr_array_add(ranges, entry);
709 }
710
711 static void crs_range_free(gpointer data)
712 {
713 CrsRangeEntry *entry = (CrsRangeEntry *)data;
714 g_free(entry);
715 }
716
717 typedef struct CrsRangeSet {
718 GPtrArray *io_ranges;
719 GPtrArray *mem_ranges;
720 GPtrArray *mem_64bit_ranges;
721 } CrsRangeSet;
722
723 static void crs_range_set_init(CrsRangeSet *range_set)
724 {
725 range_set->io_ranges = g_ptr_array_new_with_free_func(crs_range_free);
726 range_set->mem_ranges = g_ptr_array_new_with_free_func(crs_range_free);
727 range_set->mem_64bit_ranges =
728 g_ptr_array_new_with_free_func(crs_range_free);
729 }
730
731 static void crs_range_set_free(CrsRangeSet *range_set)
732 {
733 g_ptr_array_free(range_set->io_ranges, true);
734 g_ptr_array_free(range_set->mem_ranges, true);
735 g_ptr_array_free(range_set->mem_64bit_ranges, true);
736 }
737
738 static gint crs_range_compare(gconstpointer a, gconstpointer b)
739 {
740 CrsRangeEntry *entry_a = *(CrsRangeEntry **)a;
741 CrsRangeEntry *entry_b = *(CrsRangeEntry **)b;
742
743 return (int64_t)entry_a->base - (int64_t)entry_b->base;
744 }
745
746 /*
747 * crs_replace_with_free_ranges - given the 'used' ranges within [start - end]
748 * interval, computes the 'free' ranges from the same interval.
749 * Example: If the input array is { [a1 - a2],[b1 - b2] }, the function
750 * will return { [base - a1], [a2 - b1], [b2 - limit] }.
751 */
752 static void crs_replace_with_free_ranges(GPtrArray *ranges,
753 uint64_t start, uint64_t end)
754 {
755 GPtrArray *free_ranges = g_ptr_array_new();
756 uint64_t free_base = start;
757 int i;
758
759 g_ptr_array_sort(ranges, crs_range_compare);
760 for (i = 0; i < ranges->len; i++) {
761 CrsRangeEntry *used = g_ptr_array_index(ranges, i);
762
763 if (free_base < used->base) {
764 crs_range_insert(free_ranges, free_base, used->base - 1);
765 }
766
767 free_base = used->limit + 1;
768 }
769
770 if (free_base < end) {
771 crs_range_insert(free_ranges, free_base, end);
772 }
773
774 g_ptr_array_set_size(ranges, 0);
775 for (i = 0; i < free_ranges->len; i++) {
776 g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i));
777 }
778
779 g_ptr_array_free(free_ranges, true);
780 }
781
782 /*
783 * crs_range_merge - merges adjacent ranges in the given array.
784 * Array elements are deleted and replaced with the merged ranges.
785 */
786 static void crs_range_merge(GPtrArray *range)
787 {
788 GPtrArray *tmp = g_ptr_array_new_with_free_func(crs_range_free);
789 CrsRangeEntry *entry;
790 uint64_t range_base, range_limit;
791 int i;
792
793 if (!range->len) {
794 return;
795 }
796
797 g_ptr_array_sort(range, crs_range_compare);
798
799 entry = g_ptr_array_index(range, 0);
800 range_base = entry->base;
801 range_limit = entry->limit;
802 for (i = 1; i < range->len; i++) {
803 entry = g_ptr_array_index(range, i);
804 if (entry->base - 1 == range_limit) {
805 range_limit = entry->limit;
806 } else {
807 crs_range_insert(tmp, range_base, range_limit);
808 range_base = entry->base;
809 range_limit = entry->limit;
810 }
811 }
812 crs_range_insert(tmp, range_base, range_limit);
813
814 g_ptr_array_set_size(range, 0);
815 for (i = 0; i < tmp->len; i++) {
816 entry = g_ptr_array_index(tmp, i);
817 crs_range_insert(range, entry->base, entry->limit);
818 }
819 g_ptr_array_free(tmp, true);
820 }
821
822 static Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set)
823 {
824 Aml *crs = aml_resource_template();
825 CrsRangeSet temp_range_set;
826 CrsRangeEntry *entry;
827 uint8_t max_bus = pci_bus_num(host->bus);
828 uint8_t type;
829 int devfn;
830 int i;
831
832 crs_range_set_init(&temp_range_set);
833 for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) {
834 uint64_t range_base, range_limit;
835 PCIDevice *dev = host->bus->devices[devfn];
836
837 if (!dev) {
838 continue;
839 }
840
841 for (i = 0; i < PCI_NUM_REGIONS; i++) {
842 PCIIORegion *r = &dev->io_regions[i];
843
844 range_base = r->addr;
845 range_limit = r->addr + r->size - 1;
846
847 /*
848 * Work-around for old bioses
849 * that do not support multiple root buses
850 */
851 if (!range_base || range_base > range_limit) {
852 continue;
853 }
854
855 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
856 crs_range_insert(temp_range_set.io_ranges,
857 range_base, range_limit);
858 } else { /* "memory" */
859 crs_range_insert(temp_range_set.mem_ranges,
860 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(temp_range_set.io_ranges,
880 range_base, range_limit);
881 }
882
883 range_base =
884 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
885 range_limit =
886 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
887
888 /*
889 * Work-around for old bioses
890 * that do not support multiple root buses
891 */
892 if (range_base && range_base <= range_limit) {
893 uint64_t length = range_limit - range_base + 1;
894 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) {
895 crs_range_insert(temp_range_set.mem_ranges,
896 range_base, range_limit);
897 } else {
898 crs_range_insert(temp_range_set.mem_64bit_ranges,
899 range_base, range_limit);
900 }
901 }
902
903 range_base =
904 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
905 range_limit =
906 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
907
908 /*
909 * Work-around for old bioses
910 * that do not support multiple root buses
911 */
912 if (range_base && range_base <= range_limit) {
913 uint64_t length = range_limit - range_base + 1;
914 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) {
915 crs_range_insert(temp_range_set.mem_ranges,
916 range_base, range_limit);
917 } else {
918 crs_range_insert(temp_range_set.mem_64bit_ranges,
919 range_base, range_limit);
920 }
921 }
922 }
923 }
924
925 crs_range_merge(temp_range_set.io_ranges);
926 for (i = 0; i < temp_range_set.io_ranges->len; i++) {
927 entry = g_ptr_array_index(temp_range_set.io_ranges, i);
928 aml_append(crs,
929 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
930 AML_POS_DECODE, AML_ENTIRE_RANGE,
931 0, entry->base, entry->limit, 0,
932 entry->limit - entry->base + 1));
933 crs_range_insert(range_set->io_ranges, entry->base, entry->limit);
934 }
935
936 crs_range_merge(temp_range_set.mem_ranges);
937 for (i = 0; i < temp_range_set.mem_ranges->len; i++) {
938 entry = g_ptr_array_index(temp_range_set.mem_ranges, i);
939 aml_append(crs,
940 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
941 AML_MAX_FIXED, AML_NON_CACHEABLE,
942 AML_READ_WRITE,
943 0, entry->base, entry->limit, 0,
944 entry->limit - entry->base + 1));
945 crs_range_insert(range_set->mem_ranges, entry->base, entry->limit);
946 }
947
948 crs_range_merge(temp_range_set.mem_64bit_ranges);
949 for (i = 0; i < temp_range_set.mem_64bit_ranges->len; i++) {
950 entry = g_ptr_array_index(temp_range_set.mem_64bit_ranges, i);
951 aml_append(crs,
952 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
953 AML_MAX_FIXED, AML_NON_CACHEABLE,
954 AML_READ_WRITE,
955 0, entry->base, entry->limit, 0,
956 entry->limit - entry->base + 1));
957 crs_range_insert(range_set->mem_64bit_ranges,
958 entry->base, entry->limit);
959 }
960
961 crs_range_set_free(&temp_range_set);
962
963 aml_append(crs,
964 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
965 0,
966 pci_bus_num(host->bus),
967 max_bus,
968 0,
969 max_bus - pci_bus_num(host->bus) + 1));
970
971 return crs;
972 }
973
974 static void build_hpet_aml(Aml *table)
975 {
976 Aml *crs;
977 Aml *field;
978 Aml *method;
979 Aml *if_ctx;
980 Aml *scope = aml_scope("_SB");
981 Aml *dev = aml_device("HPET");
982 Aml *zero = aml_int(0);
983 Aml *id = aml_local(0);
984 Aml *period = aml_local(1);
985
986 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103")));
987 aml_append(dev, aml_name_decl("_UID", zero));
988
989 aml_append(dev,
990 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE),
991 HPET_LEN));
992 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE);
993 aml_append(field, aml_named_field("VEND", 32));
994 aml_append(field, aml_named_field("PRD", 32));
995 aml_append(dev, field);
996
997 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
998 aml_append(method, aml_store(aml_name("VEND"), id));
999 aml_append(method, aml_store(aml_name("PRD"), period));
1000 aml_append(method, aml_shiftright(id, aml_int(16), id));
1001 if_ctx = aml_if(aml_lor(aml_equal(id, zero),
1002 aml_equal(id, aml_int(0xffff))));
1003 {
1004 aml_append(if_ctx, aml_return(zero));
1005 }
1006 aml_append(method, if_ctx);
1007
1008 if_ctx = aml_if(aml_lor(aml_equal(period, zero),
1009 aml_lgreater(period, aml_int(100000000))));
1010 {
1011 aml_append(if_ctx, aml_return(zero));
1012 }
1013 aml_append(method, if_ctx);
1014
1015 aml_append(method, aml_return(aml_int(0x0F)));
1016 aml_append(dev, method);
1017
1018 crs = aml_resource_template();
1019 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY));
1020 aml_append(dev, aml_name_decl("_CRS", crs));
1021
1022 aml_append(scope, dev);
1023 aml_append(table, scope);
1024 }
1025
1026 static Aml *build_fdinfo_aml(int idx, FloppyDriveType type)
1027 {
1028 Aml *dev, *fdi;
1029 uint8_t maxc, maxh, maxs;
1030
1031 isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs);
1032
1033 dev = aml_device("FLP%c", 'A' + idx);
1034
1035 aml_append(dev, aml_name_decl("_ADR", aml_int(idx)));
1036
1037 fdi = aml_package(16);
1038 aml_append(fdi, aml_int(idx)); /* Drive Number */
1039 aml_append(fdi,
1040 aml_int(cmos_get_fd_drive_type(type))); /* Device Type */
1041 /*
1042 * the values below are the limits of the drive, and are thus independent
1043 * of the inserted media
1044 */
1045 aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */
1046 aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */
1047 aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */
1048 /*
1049 * SeaBIOS returns the below values for int 0x13 func 0x08 regardless of
1050 * the drive type, so shall we
1051 */
1052 aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */
1053 aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */
1054 aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */
1055 aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */
1056 aml_append(fdi, aml_int(0x12)); /* disk_eot */
1057 aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */
1058 aml_append(fdi, aml_int(0xFF)); /* disk_dtl */
1059 aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */
1060 aml_append(fdi, aml_int(0xF6)); /* disk_fill */
1061 aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */
1062 aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */
1063
1064 aml_append(dev, aml_name_decl("_FDI", fdi));
1065 return dev;
1066 }
1067
1068 static Aml *build_fdc_device_aml(ISADevice *fdc)
1069 {
1070 int i;
1071 Aml *dev;
1072 Aml *crs;
1073
1074 #define ACPI_FDE_MAX_FD 4
1075 uint32_t fde_buf[5] = {
1076 0, 0, 0, 0, /* presence of floppy drives #0 - #3 */
1077 cpu_to_le32(2) /* tape presence (2 == never present) */
1078 };
1079
1080 dev = aml_device("FDC0");
1081 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700")));
1082
1083 crs = aml_resource_template();
1084 aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04));
1085 aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01));
1086 aml_append(crs, aml_irq_no_flags(6));
1087 aml_append(crs,
1088 aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2));
1089 aml_append(dev, aml_name_decl("_CRS", crs));
1090
1091 for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) {
1092 FloppyDriveType type = isa_fdc_get_drive_type(fdc, i);
1093
1094 if (type < FLOPPY_DRIVE_TYPE_NONE) {
1095 fde_buf[i] = cpu_to_le32(1); /* drive present */
1096 aml_append(dev, build_fdinfo_aml(i, type));
1097 }
1098 }
1099 aml_append(dev, aml_name_decl("_FDE",
1100 aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf)));
1101
1102 return dev;
1103 }
1104
1105 static Aml *build_rtc_device_aml(void)
1106 {
1107 Aml *dev;
1108 Aml *crs;
1109
1110 dev = aml_device("RTC");
1111 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00")));
1112 crs = aml_resource_template();
1113 aml_append(crs, aml_io(AML_DECODE16, 0x0070, 0x0070, 0x10, 0x02));
1114 aml_append(crs, aml_irq_no_flags(8));
1115 aml_append(crs, aml_io(AML_DECODE16, 0x0072, 0x0072, 0x02, 0x06));
1116 aml_append(dev, aml_name_decl("_CRS", crs));
1117
1118 return dev;
1119 }
1120
1121 static Aml *build_kbd_device_aml(void)
1122 {
1123 Aml *dev;
1124 Aml *crs;
1125 Aml *method;
1126
1127 dev = aml_device("KBD");
1128 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0303")));
1129
1130 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1131 aml_append(method, aml_return(aml_int(0x0f)));
1132 aml_append(dev, method);
1133
1134 crs = aml_resource_template();
1135 aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01));
1136 aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01));
1137 aml_append(crs, aml_irq_no_flags(1));
1138 aml_append(dev, aml_name_decl("_CRS", crs));
1139
1140 return dev;
1141 }
1142
1143 static Aml *build_mouse_device_aml(void)
1144 {
1145 Aml *dev;
1146 Aml *crs;
1147 Aml *method;
1148
1149 dev = aml_device("MOU");
1150 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0F13")));
1151
1152 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1153 aml_append(method, aml_return(aml_int(0x0f)));
1154 aml_append(dev, method);
1155
1156 crs = aml_resource_template();
1157 aml_append(crs, aml_irq_no_flags(12));
1158 aml_append(dev, aml_name_decl("_CRS", crs));
1159
1160 return dev;
1161 }
1162
1163 static Aml *build_lpt_device_aml(void)
1164 {
1165 Aml *dev;
1166 Aml *crs;
1167 Aml *method;
1168 Aml *if_ctx;
1169 Aml *else_ctx;
1170 Aml *zero = aml_int(0);
1171 Aml *is_present = aml_local(0);
1172
1173 dev = aml_device("LPT");
1174 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400")));
1175
1176 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1177 aml_append(method, aml_store(aml_name("LPEN"), is_present));
1178 if_ctx = aml_if(aml_equal(is_present, zero));
1179 {
1180 aml_append(if_ctx, aml_return(aml_int(0x00)));
1181 }
1182 aml_append(method, if_ctx);
1183 else_ctx = aml_else();
1184 {
1185 aml_append(else_ctx, aml_return(aml_int(0x0f)));
1186 }
1187 aml_append(method, else_ctx);
1188 aml_append(dev, method);
1189
1190 crs = aml_resource_template();
1191 aml_append(crs, aml_io(AML_DECODE16, 0x0378, 0x0378, 0x08, 0x08));
1192 aml_append(crs, aml_irq_no_flags(7));
1193 aml_append(dev, aml_name_decl("_CRS", crs));
1194
1195 return dev;
1196 }
1197
1198 static Aml *build_com_device_aml(uint8_t uid)
1199 {
1200 Aml *dev;
1201 Aml *crs;
1202 Aml *method;
1203 Aml *if_ctx;
1204 Aml *else_ctx;
1205 Aml *zero = aml_int(0);
1206 Aml *is_present = aml_local(0);
1207 const char *enabled_field = "CAEN";
1208 uint8_t irq = 4;
1209 uint16_t io_port = 0x03F8;
1210
1211 assert(uid == 1 || uid == 2);
1212 if (uid == 2) {
1213 enabled_field = "CBEN";
1214 irq = 3;
1215 io_port = 0x02F8;
1216 }
1217
1218 dev = aml_device("COM%d", uid);
1219 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501")));
1220 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1221
1222 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1223 aml_append(method, aml_store(aml_name("%s", enabled_field), is_present));
1224 if_ctx = aml_if(aml_equal(is_present, zero));
1225 {
1226 aml_append(if_ctx, aml_return(aml_int(0x00)));
1227 }
1228 aml_append(method, if_ctx);
1229 else_ctx = aml_else();
1230 {
1231 aml_append(else_ctx, aml_return(aml_int(0x0f)));
1232 }
1233 aml_append(method, else_ctx);
1234 aml_append(dev, method);
1235
1236 crs = aml_resource_template();
1237 aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08));
1238 aml_append(crs, aml_irq_no_flags(irq));
1239 aml_append(dev, aml_name_decl("_CRS", crs));
1240
1241 return dev;
1242 }
1243
1244 static void build_isa_devices_aml(Aml *table)
1245 {
1246 ISADevice *fdc = pc_find_fdc0();
1247 bool ambiguous;
1248
1249 Aml *scope = aml_scope("_SB.PCI0.ISA");
1250 Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
1251
1252 aml_append(scope, build_rtc_device_aml());
1253 aml_append(scope, build_kbd_device_aml());
1254 aml_append(scope, build_mouse_device_aml());
1255 if (fdc) {
1256 aml_append(scope, build_fdc_device_aml(fdc));
1257 }
1258 aml_append(scope, build_lpt_device_aml());
1259 aml_append(scope, build_com_device_aml(1));
1260 aml_append(scope, build_com_device_aml(2));
1261
1262 if (ambiguous) {
1263 error_report("Multiple ISA busses, unable to define IPMI ACPI data");
1264 } else if (!obj) {
1265 error_report("No ISA bus, unable to define IPMI ACPI data");
1266 } else {
1267 build_acpi_ipmi_devices(scope, BUS(obj));
1268 }
1269
1270 aml_append(table, scope);
1271 }
1272
1273 static void build_dbg_aml(Aml *table)
1274 {
1275 Aml *field;
1276 Aml *method;
1277 Aml *while_ctx;
1278 Aml *scope = aml_scope("\\");
1279 Aml *buf = aml_local(0);
1280 Aml *len = aml_local(1);
1281 Aml *idx = aml_local(2);
1282
1283 aml_append(scope,
1284 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01));
1285 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1286 aml_append(field, aml_named_field("DBGB", 8));
1287 aml_append(scope, field);
1288
1289 method = aml_method("DBUG", 1, AML_NOTSERIALIZED);
1290
1291 aml_append(method, aml_to_hexstring(aml_arg(0), buf));
1292 aml_append(method, aml_to_buffer(buf, buf));
1293 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len));
1294 aml_append(method, aml_store(aml_int(0), idx));
1295
1296 while_ctx = aml_while(aml_lless(idx, len));
1297 aml_append(while_ctx,
1298 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB")));
1299 aml_append(while_ctx, aml_increment(idx));
1300 aml_append(method, while_ctx);
1301
1302 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB")));
1303 aml_append(scope, method);
1304
1305 aml_append(table, scope);
1306 }
1307
1308 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg)
1309 {
1310 Aml *dev;
1311 Aml *crs;
1312 Aml *method;
1313 uint32_t irqs[] = {5, 10, 11};
1314
1315 dev = aml_device("%s", name);
1316 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1317 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1318
1319 crs = aml_resource_template();
1320 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
1321 AML_SHARED, irqs, ARRAY_SIZE(irqs)));
1322 aml_append(dev, aml_name_decl("_PRS", crs));
1323
1324 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1325 aml_append(method, aml_return(aml_call1("IQST", reg)));
1326 aml_append(dev, method);
1327
1328 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1329 aml_append(method, aml_or(reg, aml_int(0x80), reg));
1330 aml_append(dev, method);
1331
1332 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1333 aml_append(method, aml_return(aml_call1("IQCR", reg)));
1334 aml_append(dev, method);
1335
1336 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1337 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI"));
1338 aml_append(method, aml_store(aml_name("PRRI"), reg));
1339 aml_append(dev, method);
1340
1341 return dev;
1342 }
1343
1344 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi)
1345 {
1346 Aml *dev;
1347 Aml *crs;
1348 Aml *method;
1349 uint32_t irqs;
1350
1351 dev = aml_device("%s", name);
1352 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1353 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1354
1355 crs = aml_resource_template();
1356 irqs = gsi;
1357 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
1358 AML_SHARED, &irqs, 1));
1359 aml_append(dev, aml_name_decl("_PRS", crs));
1360
1361 aml_append(dev, aml_name_decl("_CRS", crs));
1362
1363 /*
1364 * _DIS can be no-op because the interrupt cannot be disabled.
1365 */
1366 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1367 aml_append(dev, method);
1368
1369 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1370 aml_append(dev, method);
1371
1372 return dev;
1373 }
1374
1375 /* _CRS method - get current settings */
1376 static Aml *build_iqcr_method(bool is_piix4)
1377 {
1378 Aml *if_ctx;
1379 uint32_t irqs;
1380 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED);
1381 Aml *crs = aml_resource_template();
1382
1383 irqs = 0;
1384 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
1385 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1));
1386 aml_append(method, aml_name_decl("PRR0", crs));
1387
1388 aml_append(method,
1389 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI"));
1390
1391 if (is_piix4) {
1392 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80)));
1393 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI")));
1394 aml_append(method, if_ctx);
1395 } else {
1396 aml_append(method,
1397 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL),
1398 aml_name("PRRI")));
1399 }
1400
1401 aml_append(method, aml_return(aml_name("PRR0")));
1402 return method;
1403 }
1404
1405 /* _STA method - get status */
1406 static Aml *build_irq_status_method(void)
1407 {
1408 Aml *if_ctx;
1409 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED);
1410
1411 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL));
1412 aml_append(if_ctx, aml_return(aml_int(0x09)));
1413 aml_append(method, if_ctx);
1414 aml_append(method, aml_return(aml_int(0x0B)));
1415 return method;
1416 }
1417
1418 static void build_piix4_pci0_int(Aml *table)
1419 {
1420 Aml *dev;
1421 Aml *crs;
1422 Aml *field;
1423 Aml *method;
1424 uint32_t irqs;
1425 Aml *sb_scope = aml_scope("_SB");
1426 Aml *pci0_scope = aml_scope("PCI0");
1427
1428 aml_append(pci0_scope, build_prt(true));
1429 aml_append(sb_scope, pci0_scope);
1430
1431 field = aml_field("PCI0.ISA.P40C", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1432 aml_append(field, aml_named_field("PRQ0", 8));
1433 aml_append(field, aml_named_field("PRQ1", 8));
1434 aml_append(field, aml_named_field("PRQ2", 8));
1435 aml_append(field, aml_named_field("PRQ3", 8));
1436 aml_append(sb_scope, field);
1437
1438 aml_append(sb_scope, build_irq_status_method());
1439 aml_append(sb_scope, build_iqcr_method(true));
1440
1441 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0")));
1442 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1")));
1443 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2")));
1444 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3")));
1445
1446 dev = aml_device("LNKS");
1447 {
1448 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1449 aml_append(dev, aml_name_decl("_UID", aml_int(4)));
1450
1451 crs = aml_resource_template();
1452 irqs = 9;
1453 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
1454 AML_ACTIVE_HIGH, AML_SHARED,
1455 &irqs, 1));
1456 aml_append(dev, aml_name_decl("_PRS", crs));
1457
1458 /* The SCI cannot be disabled and is always attached to GSI 9,
1459 * so these are no-ops. We only need this link to override the
1460 * polarity to active high and match the content of the MADT.
1461 */
1462 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1463 aml_append(method, aml_return(aml_int(0x0b)));
1464 aml_append(dev, method);
1465
1466 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1467 aml_append(dev, method);
1468
1469 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1470 aml_append(method, aml_return(aml_name("_PRS")));
1471 aml_append(dev, method);
1472
1473 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1474 aml_append(dev, method);
1475 }
1476 aml_append(sb_scope, dev);
1477
1478 aml_append(table, sb_scope);
1479 }
1480
1481 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name)
1482 {
1483 int i;
1484 int head;
1485 Aml *pkg;
1486 char base = name[3] < 'E' ? 'A' : 'E';
1487 char *s = g_strdup(name);
1488 Aml *a_nr = aml_int((nr << 16) | 0xffff);
1489
1490 assert(strlen(s) == 4);
1491
1492 head = name[3] - base;
1493 for (i = 0; i < 4; i++) {
1494 if (head + i > 3) {
1495 head = i * -1;
1496 }
1497 s[3] = base + head + i;
1498 pkg = aml_package(4);
1499 aml_append(pkg, a_nr);
1500 aml_append(pkg, aml_int(i));
1501 aml_append(pkg, aml_name("%s", s));
1502 aml_append(pkg, aml_int(0));
1503 aml_append(ctx, pkg);
1504 }
1505 g_free(s);
1506 }
1507
1508 static Aml *build_q35_routing_table(const char *str)
1509 {
1510 int i;
1511 Aml *pkg;
1512 char *name = g_strdup_printf("%s ", str);
1513
1514 pkg = aml_package(128);
1515 for (i = 0; i < 0x18; i++) {
1516 name[3] = 'E' + (i & 0x3);
1517 append_q35_prt_entry(pkg, i, name);
1518 }
1519
1520 name[3] = 'E';
1521 append_q35_prt_entry(pkg, 0x18, name);
1522
1523 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */
1524 for (i = 0x0019; i < 0x1e; i++) {
1525 name[3] = 'A';
1526 append_q35_prt_entry(pkg, i, name);
1527 }
1528
1529 /* PCIe->PCI bridge. use PIRQ[E-H] */
1530 name[3] = 'E';
1531 append_q35_prt_entry(pkg, 0x1e, name);
1532 name[3] = 'A';
1533 append_q35_prt_entry(pkg, 0x1f, name);
1534
1535 g_free(name);
1536 return pkg;
1537 }
1538
1539 static void build_q35_pci0_int(Aml *table)
1540 {
1541 Aml *field;
1542 Aml *method;
1543 Aml *sb_scope = aml_scope("_SB");
1544 Aml *pci0_scope = aml_scope("PCI0");
1545
1546 /* Zero => PIC mode, One => APIC Mode */
1547 aml_append(table, aml_name_decl("PICF", aml_int(0)));
1548 method = aml_method("_PIC", 1, AML_NOTSERIALIZED);
1549 {
1550 aml_append(method, aml_store(aml_arg(0), aml_name("PICF")));
1551 }
1552 aml_append(table, method);
1553
1554 aml_append(pci0_scope,
1555 aml_name_decl("PRTP", build_q35_routing_table("LNK")));
1556 aml_append(pci0_scope,
1557 aml_name_decl("PRTA", build_q35_routing_table("GSI")));
1558
1559 method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
1560 {
1561 Aml *if_ctx;
1562 Aml *else_ctx;
1563
1564 /* PCI IRQ routing table, example from ACPI 2.0a specification,
1565 section 6.2.8.1 */
1566 /* Note: we provide the same info as the PCI routing
1567 table of the Bochs BIOS */
1568 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0)));
1569 aml_append(if_ctx, aml_return(aml_name("PRTP")));
1570 aml_append(method, if_ctx);
1571 else_ctx = aml_else();
1572 aml_append(else_ctx, aml_return(aml_name("PRTA")));
1573 aml_append(method, else_ctx);
1574 }
1575 aml_append(pci0_scope, method);
1576 aml_append(sb_scope, pci0_scope);
1577
1578 field = aml_field("PCI0.ISA.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1579 aml_append(field, aml_named_field("PRQA", 8));
1580 aml_append(field, aml_named_field("PRQB", 8));
1581 aml_append(field, aml_named_field("PRQC", 8));
1582 aml_append(field, aml_named_field("PRQD", 8));
1583 aml_append(field, aml_reserved_field(0x20));
1584 aml_append(field, aml_named_field("PRQE", 8));
1585 aml_append(field, aml_named_field("PRQF", 8));
1586 aml_append(field, aml_named_field("PRQG", 8));
1587 aml_append(field, aml_named_field("PRQH", 8));
1588 aml_append(sb_scope, field);
1589
1590 aml_append(sb_scope, build_irq_status_method());
1591 aml_append(sb_scope, build_iqcr_method(false));
1592
1593 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA")));
1594 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB")));
1595 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC")));
1596 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD")));
1597 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE")));
1598 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF")));
1599 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG")));
1600 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH")));
1601
1602 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10));
1603 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11));
1604 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12));
1605 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13));
1606 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14));
1607 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15));
1608 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16));
1609 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17));
1610
1611 aml_append(table, sb_scope);
1612 }
1613
1614 static void build_q35_isa_bridge(Aml *table)
1615 {
1616 Aml *dev;
1617 Aml *scope;
1618 Aml *field;
1619
1620 scope = aml_scope("_SB.PCI0");
1621 dev = aml_device("ISA");
1622 aml_append(dev, aml_name_decl("_ADR", aml_int(0x001F0000)));
1623
1624 /* ICH9 PCI to ISA irq remapping */
1625 aml_append(dev, aml_operation_region("PIRQ", AML_PCI_CONFIG,
1626 aml_int(0x60), 0x0C));
1627
1628 aml_append(dev, aml_operation_region("LPCD", AML_PCI_CONFIG,
1629 aml_int(0x80), 0x02));
1630 field = aml_field("LPCD", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
1631 aml_append(field, aml_named_field("COMA", 3));
1632 aml_append(field, aml_reserved_field(1));
1633 aml_append(field, aml_named_field("COMB", 3));
1634 aml_append(field, aml_reserved_field(1));
1635 aml_append(field, aml_named_field("LPTD", 2));
1636 aml_append(dev, field);
1637
1638 aml_append(dev, aml_operation_region("LPCE", AML_PCI_CONFIG,
1639 aml_int(0x82), 0x02));
1640 /* enable bits */
1641 field = aml_field("LPCE", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
1642 aml_append(field, aml_named_field("CAEN", 1));
1643 aml_append(field, aml_named_field("CBEN", 1));
1644 aml_append(field, aml_named_field("LPEN", 1));
1645 aml_append(dev, field);
1646
1647 aml_append(scope, dev);
1648 aml_append(table, scope);
1649 }
1650
1651 static void build_piix4_pm(Aml *table)
1652 {
1653 Aml *dev;
1654 Aml *scope;
1655
1656 scope = aml_scope("_SB.PCI0");
1657 dev = aml_device("PX13");
1658 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010003)));
1659
1660 aml_append(dev, aml_operation_region("P13C", AML_PCI_CONFIG,
1661 aml_int(0x00), 0xff));
1662 aml_append(scope, dev);
1663 aml_append(table, scope);
1664 }
1665
1666 static void build_piix4_isa_bridge(Aml *table)
1667 {
1668 Aml *dev;
1669 Aml *scope;
1670 Aml *field;
1671
1672 scope = aml_scope("_SB.PCI0");
1673 dev = aml_device("ISA");
1674 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010000)));
1675
1676 /* PIIX PCI to ISA irq remapping */
1677 aml_append(dev, aml_operation_region("P40C", AML_PCI_CONFIG,
1678 aml_int(0x60), 0x04));
1679 /* enable bits */
1680 field = aml_field("^PX13.P13C", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
1681 /* Offset(0x5f),, 7, */
1682 aml_append(field, aml_reserved_field(0x2f8));
1683 aml_append(field, aml_reserved_field(7));
1684 aml_append(field, aml_named_field("LPEN", 1));
1685 /* Offset(0x67),, 3, */
1686 aml_append(field, aml_reserved_field(0x38));
1687 aml_append(field, aml_reserved_field(3));
1688 aml_append(field, aml_named_field("CAEN", 1));
1689 aml_append(field, aml_reserved_field(3));
1690 aml_append(field, aml_named_field("CBEN", 1));
1691 aml_append(dev, field);
1692
1693 aml_append(scope, dev);
1694 aml_append(table, scope);
1695 }
1696
1697 static void build_piix4_pci_hotplug(Aml *table)
1698 {
1699 Aml *scope;
1700 Aml *field;
1701 Aml *method;
1702
1703 scope = aml_scope("_SB.PCI0");
1704
1705 aml_append(scope,
1706 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08));
1707 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1708 aml_append(field, aml_named_field("PCIU", 32));
1709 aml_append(field, aml_named_field("PCID", 32));
1710 aml_append(scope, field);
1711
1712 aml_append(scope,
1713 aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04));
1714 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1715 aml_append(field, aml_named_field("B0EJ", 32));
1716 aml_append(scope, field);
1717
1718 aml_append(scope,
1719 aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04));
1720 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1721 aml_append(field, aml_named_field("BNUM", 32));
1722 aml_append(scope, field);
1723
1724 aml_append(scope, aml_mutex("BLCK", 0));
1725
1726 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED);
1727 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
1728 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
1729 aml_append(method,
1730 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ")));
1731 aml_append(method, aml_release(aml_name("BLCK")));
1732 aml_append(method, aml_return(aml_int(0)));
1733 aml_append(scope, method);
1734
1735 aml_append(table, scope);
1736 }
1737
1738 static Aml *build_q35_osc_method(void)
1739 {
1740 Aml *if_ctx;
1741 Aml *if_ctx2;
1742 Aml *else_ctx;
1743 Aml *method;
1744 Aml *a_cwd1 = aml_name("CDW1");
1745 Aml *a_ctrl = aml_local(0);
1746
1747 method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
1748 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
1749
1750 if_ctx = aml_if(aml_equal(
1751 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766")));
1752 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
1753 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
1754
1755 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl));
1756
1757 /*
1758 * Always allow native PME, AER (no dependencies)
1759 * Allow SHPC (PCI bridges can have SHPC controller)
1760 */
1761 aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl));
1762
1763 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1))));
1764 /* Unknown revision */
1765 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1));
1766 aml_append(if_ctx, if_ctx2);
1767
1768 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl)));
1769 /* Capabilities bits were masked */
1770 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1));
1771 aml_append(if_ctx, if_ctx2);
1772
1773 /* Update DWORD3 in the buffer */
1774 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3")));
1775 aml_append(method, if_ctx);
1776
1777 else_ctx = aml_else();
1778 /* Unrecognized UUID */
1779 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1));
1780 aml_append(method, else_ctx);
1781
1782 aml_append(method, aml_return(aml_arg(3)));
1783 return method;
1784 }
1785
1786 static void
1787 build_dsdt(GArray *table_data, BIOSLinker *linker,
1788 AcpiPmInfo *pm, AcpiMiscInfo *misc,
1789 Range *pci_hole, Range *pci_hole64, MachineState *machine)
1790 {
1791 CrsRangeEntry *entry;
1792 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs;
1793 CrsRangeSet crs_range_set;
1794 PCMachineState *pcms = PC_MACHINE(machine);
1795 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine);
1796 uint32_t nr_mem = machine->ram_slots;
1797 int root_bus_limit = 0xFF;
1798 PCIBus *bus = NULL;
1799 int i;
1800
1801 dsdt = init_aml_allocator();
1802
1803 /* Reserve space for header */
1804 acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
1805
1806 build_dbg_aml(dsdt);
1807 if (misc->is_piix4) {
1808 sb_scope = aml_scope("_SB");
1809 dev = aml_device("PCI0");
1810 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
1811 aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
1812 aml_append(dev, aml_name_decl("_UID", aml_int(1)));
1813 aml_append(sb_scope, dev);
1814 aml_append(dsdt, sb_scope);
1815
1816 build_hpet_aml(dsdt);
1817 build_piix4_pm(dsdt);
1818 build_piix4_isa_bridge(dsdt);
1819 build_isa_devices_aml(dsdt);
1820 build_piix4_pci_hotplug(dsdt);
1821 build_piix4_pci0_int(dsdt);
1822 } else {
1823 sb_scope = aml_scope("_SB");
1824 dev = aml_device("PCI0");
1825 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
1826 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
1827 aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
1828 aml_append(dev, aml_name_decl("_UID", aml_int(1)));
1829 aml_append(dev, build_q35_osc_method());
1830 aml_append(sb_scope, dev);
1831 aml_append(dsdt, sb_scope);
1832
1833 build_hpet_aml(dsdt);
1834 build_q35_isa_bridge(dsdt);
1835 build_isa_devices_aml(dsdt);
1836 build_q35_pci0_int(dsdt);
1837 }
1838
1839 if (pcmc->legacy_cpu_hotplug) {
1840 build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base);
1841 } else {
1842 CPUHotplugFeatures opts = {
1843 .apci_1_compatible = true, .has_legacy_cphp = true
1844 };
1845 build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base,
1846 "\\_SB.PCI0", "\\_GPE._E02");
1847 }
1848 build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", "\\_GPE._E03");
1849
1850 scope = aml_scope("_GPE");
1851 {
1852 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006")));
1853
1854 if (misc->is_piix4) {
1855 method = aml_method("_E01", 0, AML_NOTSERIALIZED);
1856 aml_append(method,
1857 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF));
1858 aml_append(method, aml_call0("\\_SB.PCI0.PCNT"));
1859 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK")));
1860 aml_append(scope, method);
1861 }
1862
1863 if (pcms->acpi_nvdimm_state.is_enabled) {
1864 method = aml_method("_E04", 0, AML_NOTSERIALIZED);
1865 aml_append(method, aml_notify(aml_name("\\_SB.NVDR"),
1866 aml_int(0x80)));
1867 aml_append(scope, method);
1868 }
1869 }
1870 aml_append(dsdt, scope);
1871
1872 crs_range_set_init(&crs_range_set);
1873 bus = PC_MACHINE(machine)->bus;
1874 if (bus) {
1875 QLIST_FOREACH(bus, &bus->child, sibling) {
1876 uint8_t bus_num = pci_bus_num(bus);
1877 uint8_t numa_node = pci_bus_numa_node(bus);
1878
1879 /* look only for expander root buses */
1880 if (!pci_bus_is_root(bus)) {
1881 continue;
1882 }
1883
1884 if (bus_num < root_bus_limit) {
1885 root_bus_limit = bus_num - 1;
1886 }
1887
1888 scope = aml_scope("\\_SB");
1889 dev = aml_device("PC%.02X", bus_num);
1890 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
1891 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
1892 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
1893 if (pci_bus_is_express(bus)) {
1894 aml_append(dev, build_q35_osc_method());
1895 }
1896
1897 if (numa_node != NUMA_NODE_UNASSIGNED) {
1898 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node)));
1899 }
1900
1901 aml_append(dev, build_prt(false));
1902 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set);
1903 aml_append(dev, aml_name_decl("_CRS", crs));
1904 aml_append(scope, dev);
1905 aml_append(dsdt, scope);
1906 }
1907 }
1908
1909 scope = aml_scope("\\_SB.PCI0");
1910 /* build PCI0._CRS */
1911 crs = aml_resource_template();
1912 aml_append(crs,
1913 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
1914 0x0000, 0x0, root_bus_limit,
1915 0x0000, root_bus_limit + 1));
1916 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08));
1917
1918 aml_append(crs,
1919 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
1920 AML_POS_DECODE, AML_ENTIRE_RANGE,
1921 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
1922
1923 crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF);
1924 for (i = 0; i < crs_range_set.io_ranges->len; i++) {
1925 entry = g_ptr_array_index(crs_range_set.io_ranges, i);
1926 aml_append(crs,
1927 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
1928 AML_POS_DECODE, AML_ENTIRE_RANGE,
1929 0x0000, entry->base, entry->limit,
1930 0x0000, entry->limit - entry->base + 1));
1931 }
1932
1933 aml_append(crs,
1934 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
1935 AML_CACHEABLE, AML_READ_WRITE,
1936 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
1937
1938 crs_replace_with_free_ranges(crs_range_set.mem_ranges,
1939 range_lob(pci_hole),
1940 range_upb(pci_hole));
1941 for (i = 0; i < crs_range_set.mem_ranges->len; i++) {
1942 entry = g_ptr_array_index(crs_range_set.mem_ranges, i);
1943 aml_append(crs,
1944 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
1945 AML_NON_CACHEABLE, AML_READ_WRITE,
1946 0, entry->base, entry->limit,
1947 0, entry->limit - entry->base + 1));
1948 }
1949
1950 if (!range_is_empty(pci_hole64)) {
1951 crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges,
1952 range_lob(pci_hole64),
1953 range_upb(pci_hole64));
1954 for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) {
1955 entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i);
1956 aml_append(crs,
1957 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
1958 AML_MAX_FIXED,
1959 AML_CACHEABLE, AML_READ_WRITE,
1960 0, entry->base, entry->limit,
1961 0, entry->limit - entry->base + 1));
1962 }
1963 }
1964
1965 if (TPM_IS_TIS(tpm_find())) {
1966 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
1967 TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
1968 }
1969 aml_append(scope, aml_name_decl("_CRS", crs));
1970
1971 /* reserve GPE0 block resources */
1972 dev = aml_device("GPE0");
1973 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
1974 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources")));
1975 /* device present, functioning, decoding, not shown in UI */
1976 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
1977 crs = aml_resource_template();
1978 aml_append(crs,
1979 aml_io(
1980 AML_DECODE16,
1981 pm->fadt.gpe0_blk.address,
1982 pm->fadt.gpe0_blk.address,
1983 1,
1984 pm->fadt.gpe0_blk.bit_width / 8)
1985 );
1986 aml_append(dev, aml_name_decl("_CRS", crs));
1987 aml_append(scope, dev);
1988
1989 crs_range_set_free(&crs_range_set);
1990
1991 /* reserve PCIHP resources */
1992 if (pm->pcihp_io_len) {
1993 dev = aml_device("PHPR");
1994 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
1995 aml_append(dev,
1996 aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
1997 /* device present, functioning, decoding, not shown in UI */
1998 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
1999 crs = aml_resource_template();
2000 aml_append(crs,
2001 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1,
2002 pm->pcihp_io_len)
2003 );
2004 aml_append(dev, aml_name_decl("_CRS", crs));
2005 aml_append(scope, dev);
2006 }
2007 aml_append(dsdt, scope);
2008
2009 /* create S3_ / S4_ / S5_ packages if necessary */
2010 scope = aml_scope("\\");
2011 if (!pm->s3_disabled) {
2012 pkg = aml_package(4);
2013 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */
2014 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
2015 aml_append(pkg, aml_int(0)); /* reserved */
2016 aml_append(pkg, aml_int(0)); /* reserved */
2017 aml_append(scope, aml_name_decl("_S3", pkg));
2018 }
2019
2020 if (!pm->s4_disabled) {
2021 pkg = aml_package(4);
2022 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */
2023 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
2024 aml_append(pkg, aml_int(pm->s4_val));
2025 aml_append(pkg, aml_int(0)); /* reserved */
2026 aml_append(pkg, aml_int(0)); /* reserved */
2027 aml_append(scope, aml_name_decl("_S4", pkg));
2028 }
2029
2030 pkg = aml_package(4);
2031 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */
2032 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
2033 aml_append(pkg, aml_int(0)); /* reserved */
2034 aml_append(pkg, aml_int(0)); /* reserved */
2035 aml_append(scope, aml_name_decl("_S5", pkg));
2036 aml_append(dsdt, scope);
2037
2038 /* create fw_cfg node, unconditionally */
2039 {
2040 /* when using port i/o, the 8-bit data register *always* overlaps
2041 * with half of the 16-bit control register. Hence, the total size
2042 * of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the
2043 * DMA control register is located at FW_CFG_DMA_IO_BASE + 4 */
2044 uint8_t io_size = object_property_get_bool(OBJECT(pcms->fw_cfg),
2045 "dma_enabled", NULL) ?
2046 ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) :
2047 FW_CFG_CTL_SIZE;
2048
2049 scope = aml_scope("\\_SB.PCI0");
2050 dev = aml_device("FWCF");
2051
2052 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
2053
2054 /* device present, functioning, decoding, not shown in UI */
2055 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
2056
2057 crs = aml_resource_template();
2058 aml_append(crs,
2059 aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size)
2060 );
2061 aml_append(dev, aml_name_decl("_CRS", crs));
2062
2063 aml_append(scope, dev);
2064 aml_append(dsdt, scope);
2065 }
2066
2067 if (misc->applesmc_io_base) {
2068 scope = aml_scope("\\_SB.PCI0.ISA");
2069 dev = aml_device("SMC");
2070
2071 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
2072 /* device present, functioning, decoding, not shown in UI */
2073 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
2074
2075 crs = aml_resource_template();
2076 aml_append(crs,
2077 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base,
2078 0x01, APPLESMC_MAX_DATA_LENGTH)
2079 );
2080 aml_append(crs, aml_irq_no_flags(6));
2081 aml_append(dev, aml_name_decl("_CRS", crs));
2082
2083 aml_append(scope, dev);
2084 aml_append(dsdt, scope);
2085 }
2086
2087 if (misc->pvpanic_port) {
2088 scope = aml_scope("\\_SB.PCI0.ISA");
2089
2090 dev = aml_device("PEVT");
2091 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
2092
2093 crs = aml_resource_template();
2094 aml_append(crs,
2095 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1)
2096 );
2097 aml_append(dev, aml_name_decl("_CRS", crs));
2098
2099 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO,
2100 aml_int(misc->pvpanic_port), 1));
2101 field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
2102 aml_append(field, aml_named_field("PEPT", 8));
2103 aml_append(dev, field);
2104
2105 /* device present, functioning, decoding, shown in UI */
2106 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
2107
2108 method = aml_method("RDPT", 0, AML_NOTSERIALIZED);
2109 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0)));
2110 aml_append(method, aml_return(aml_local(0)));
2111 aml_append(dev, method);
2112
2113 method = aml_method("WRPT", 1, AML_NOTSERIALIZED);
2114 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT")));
2115 aml_append(dev, method);
2116
2117 aml_append(scope, dev);
2118 aml_append(dsdt, scope);
2119 }
2120
2121 sb_scope = aml_scope("\\_SB");
2122 {
2123 Object *pci_host;
2124 PCIBus *bus = NULL;
2125
2126 pci_host = acpi_get_i386_pci_host();
2127 if (pci_host) {
2128 bus = PCI_HOST_BRIDGE(pci_host)->bus;
2129 }
2130
2131 if (bus) {
2132 Aml *scope = aml_scope("PCI0");
2133 /* Scan all PCI buses. Generate tables to support hotplug. */
2134 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
2135
2136 if (TPM_IS_TIS(tpm_find())) {
2137 dev = aml_device("ISA.TPM");
2138 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C31")));
2139 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
2140 crs = aml_resource_template();
2141 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
2142 TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
2143 /*
2144 FIXME: TPM_TIS_IRQ=5 conflicts with PNP0C0F irqs,
2145 Rewrite to take IRQ from TPM device model and
2146 fix default IRQ value there to use some unused IRQ
2147 */
2148 /* aml_append(crs, aml_irq_no_flags(TPM_TIS_IRQ)); */
2149 aml_append(dev, aml_name_decl("_CRS", crs));
2150 aml_append(scope, dev);
2151 }
2152
2153 aml_append(sb_scope, scope);
2154 }
2155 }
2156
2157 if (TPM_IS_CRB(tpm_find())) {
2158 dev = aml_device("TPM");
2159 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
2160 crs = aml_resource_template();
2161 aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE,
2162 TPM_CRB_ADDR_SIZE, AML_READ_WRITE));
2163 aml_append(dev, aml_name_decl("_CRS", crs));
2164
2165 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
2166 aml_append(method, aml_return(aml_int(0x0f)));
2167 aml_append(dev, method);
2168
2169 aml_append(sb_scope, dev);
2170 }
2171
2172 aml_append(dsdt, sb_scope);
2173
2174 /* copy AML table into ACPI tables blob and patch header there */
2175 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
2176 build_header(linker, table_data,
2177 (void *)(table_data->data + table_data->len - dsdt->buf->len),
2178 "DSDT", dsdt->buf->len, 1, NULL, NULL);
2179 free_aml_allocator();
2180 }
2181
2182 static void
2183 build_hpet(GArray *table_data, BIOSLinker *linker)
2184 {
2185 Acpi20Hpet *hpet;
2186
2187 hpet = acpi_data_push(table_data, sizeof(*hpet));
2188 /* Note timer_block_id value must be kept in sync with value advertised by
2189 * emulated hpet
2190 */
2191 hpet->timer_block_id = cpu_to_le32(0x8086a201);
2192 hpet->addr.address = cpu_to_le64(HPET_BASE);
2193 build_header(linker, table_data,
2194 (void *)hpet, "HPET", sizeof(*hpet), 1, NULL, NULL);
2195 }
2196
2197 static void
2198 build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
2199 {
2200 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
2201 unsigned log_addr_size = sizeof(tcpa->log_area_start_address);
2202 unsigned log_addr_offset =
2203 (char *)&tcpa->log_area_start_address - table_data->data;
2204
2205 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
2206 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
2207 acpi_data_push(tcpalog, le32_to_cpu(tcpa->log_area_minimum_length));
2208
2209 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1,
2210 false /* high memory */);
2211
2212 /* log area start address to be filled by Guest linker */
2213 bios_linker_loader_add_pointer(linker,
2214 ACPI_BUILD_TABLE_FILE, log_addr_offset, log_addr_size,
2215 ACPI_BUILD_TPMLOG_FILE, 0);
2216
2217 build_header(linker, table_data,
2218 (void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL);
2219 }
2220
2221 static void
2222 build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
2223 {
2224 Acpi20TPM2 *tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr);
2225 unsigned log_addr_size = sizeof(tpm2_ptr->log_area_start_address);
2226 unsigned log_addr_offset =
2227 (char *)&tpm2_ptr->log_area_start_address - table_data->data;
2228
2229 tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT);
2230 if (TPM_IS_TIS(tpm_find())) {
2231 tpm2_ptr->control_area_address = cpu_to_le64(0);
2232 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO);
2233 } else if (TPM_IS_CRB(tpm_find())) {
2234 tpm2_ptr->control_area_address = cpu_to_le64(TPM_CRB_ADDR_CTRL);
2235 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_CRB);
2236 } else {
2237 g_warn_if_reached();
2238 }
2239
2240 tpm2_ptr->log_area_minimum_length =
2241 cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
2242
2243 /* log area start address to be filled by Guest linker */
2244 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
2245 log_addr_offset, log_addr_size,
2246 ACPI_BUILD_TPMLOG_FILE, 0);
2247 build_header(linker, table_data,
2248 (void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4, NULL, NULL);
2249 }
2250
2251 #define HOLE_640K_START (640 * KiB)
2252 #define HOLE_640K_END (1 * MiB)
2253
2254 static void
2255 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
2256 {
2257 AcpiSystemResourceAffinityTable *srat;
2258 AcpiSratMemoryAffinity *numamem;
2259
2260 int i;
2261 int srat_start, numa_start, slots;
2262 uint64_t mem_len, mem_base, next_base;
2263 MachineClass *mc = MACHINE_GET_CLASS(machine);
2264 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
2265 PCMachineState *pcms = PC_MACHINE(machine);
2266 ram_addr_t hotplugabble_address_space_size =
2267 object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE,
2268 NULL);
2269
2270 srat_start = table_data->len;
2271
2272 srat = acpi_data_push(table_data, sizeof *srat);
2273 srat->reserved1 = cpu_to_le32(1);
2274
2275 for (i = 0; i < apic_ids->len; i++) {
2276 int node_id = apic_ids->cpus[i].props.node_id;
2277 uint32_t apic_id = apic_ids->cpus[i].arch_id;
2278
2279 if (apic_id < 255) {
2280 AcpiSratProcessorAffinity *core;
2281
2282 core = acpi_data_push(table_data, sizeof *core);
2283 core->type = ACPI_SRAT_PROCESSOR_APIC;
2284 core->length = sizeof(*core);
2285 core->local_apic_id = apic_id;
2286 core->proximity_lo = node_id;
2287 memset(core->proximity_hi, 0, 3);
2288 core->local_sapic_eid = 0;
2289 core->flags = cpu_to_le32(1);
2290 } else {
2291 AcpiSratProcessorX2ApicAffinity *core;
2292
2293 core = acpi_data_push(table_data, sizeof *core);
2294 core->type = ACPI_SRAT_PROCESSOR_x2APIC;
2295 core->length = sizeof(*core);
2296 core->x2apic_id = cpu_to_le32(apic_id);
2297 core->proximity_domain = cpu_to_le32(node_id);
2298 core->flags = cpu_to_le32(1);
2299 }
2300 }
2301
2302
2303 /* the memory map is a bit tricky, it contains at least one hole
2304 * from 640k-1M and possibly another one from 3.5G-4G.
2305 */
2306 next_base = 0;
2307 numa_start = table_data->len;
2308
2309 for (i = 1; i < pcms->numa_nodes + 1; ++i) {
2310 mem_base = next_base;
2311 mem_len = pcms->node_mem[i - 1];
2312 next_base = mem_base + mem_len;
2313
2314 /* Cut out the 640K hole */
2315 if (mem_base <= HOLE_640K_START &&
2316 next_base > HOLE_640K_START) {
2317 mem_len -= next_base - HOLE_640K_START;
2318 if (mem_len > 0) {
2319 numamem = acpi_data_push(table_data, sizeof *numamem);
2320 build_srat_memory(numamem, mem_base, mem_len, i - 1,
2321 MEM_AFFINITY_ENABLED);
2322 }
2323
2324 /* Check for the rare case: 640K < RAM < 1M */
2325 if (next_base <= HOLE_640K_END) {
2326 next_base = HOLE_640K_END;
2327 continue;
2328 }
2329 mem_base = HOLE_640K_END;
2330 mem_len = next_base - HOLE_640K_END;
2331 }
2332
2333 /* Cut out the ACPI_PCI hole */
2334 if (mem_base <= pcms->below_4g_mem_size &&
2335 next_base > pcms->below_4g_mem_size) {
2336 mem_len -= next_base - pcms->below_4g_mem_size;
2337 if (mem_len > 0) {
2338 numamem = acpi_data_push(table_data, sizeof *numamem);
2339 build_srat_memory(numamem, mem_base, mem_len, i - 1,
2340 MEM_AFFINITY_ENABLED);
2341 }
2342 mem_base = 1ULL << 32;
2343 mem_len = next_base - pcms->below_4g_mem_size;
2344 next_base = mem_base + mem_len;
2345 }
2346
2347 if (mem_len > 0) {
2348 numamem = acpi_data_push(table_data, sizeof *numamem);
2349 build_srat_memory(numamem, mem_base, mem_len, i - 1,
2350 MEM_AFFINITY_ENABLED);
2351 }
2352 }
2353 slots = (table_data->len - numa_start) / sizeof *numamem;
2354 for (; slots < pcms->numa_nodes + 2; slots++) {
2355 numamem = acpi_data_push(table_data, sizeof *numamem);
2356 build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
2357 }
2358
2359 /*
2360 * Entry is required for Windows to enable memory hotplug in OS
2361 * and for Linux to enable SWIOTLB when booted with less than
2362 * 4G of RAM. Windows works better if the entry sets proximity
2363 * to the highest NUMA node in the machine.
2364 * Memory devices may override proximity set by this entry,
2365 * providing _PXM method if necessary.
2366 */
2367 if (hotplugabble_address_space_size) {
2368 numamem = acpi_data_push(table_data, sizeof *numamem);
2369 build_srat_memory(numamem, machine->device_memory->base,
2370 hotplugabble_address_space_size, pcms->numa_nodes - 1,
2371 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
2372 }
2373
2374 build_header(linker, table_data,
2375 (void *)(table_data->data + srat_start),
2376 "SRAT",
2377 table_data->len - srat_start, 1, NULL, NULL);
2378 }
2379
2380 static void
2381 build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
2382 {
2383 AcpiTableMcfg *mcfg;
2384 const char *sig;
2385 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
2386
2387 mcfg = acpi_data_push(table_data, len);
2388 mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base);
2389 /* Only a single allocation so no need to play with segments */
2390 mcfg->allocation[0].pci_segment = cpu_to_le16(0);
2391 mcfg->allocation[0].start_bus_number = 0;
2392 mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1);
2393
2394 /* MCFG is used for ECAM which can be enabled or disabled by guest.
2395 * To avoid table size changes (which create migration issues),
2396 * always create the table even if there are no allocations,
2397 * but set the signature to a reserved value in this case.
2398 * ACPI spec requires OSPMs to ignore such tables.
2399 */
2400 if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) {
2401 /* Reserved signature: ignored by OSPM */
2402 sig = "QEMU";
2403 } else {
2404 sig = "MCFG";
2405 }
2406 build_header(linker, table_data, (void *)mcfg, sig, len, 1, NULL, NULL);
2407 }
2408
2409 /*
2410 * VT-d spec 8.1 DMA Remapping Reporting Structure
2411 * (version Oct. 2014 or later)
2412 */
2413 static void
2414 build_dmar_q35(GArray *table_data, BIOSLinker *linker)
2415 {
2416 int dmar_start = table_data->len;
2417
2418 AcpiTableDmar *dmar;
2419 AcpiDmarHardwareUnit *drhd;
2420 AcpiDmarRootPortATS *atsr;
2421 uint8_t dmar_flags = 0;
2422 X86IOMMUState *iommu = x86_iommu_get_default();
2423 AcpiDmarDeviceScope *scope = NULL;
2424 /* Root complex IOAPIC use one path[0] only */
2425 size_t ioapic_scope_size = sizeof(*scope) + sizeof(scope->path[0]);
2426 IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu);
2427
2428 assert(iommu);
2429 if (iommu->intr_supported) {
2430 dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */
2431 }
2432
2433 dmar = acpi_data_push(table_data, sizeof(*dmar));
2434 dmar->host_address_width = intel_iommu->aw_bits - 1;
2435 dmar->flags = dmar_flags;
2436
2437 /* DMAR Remapping Hardware Unit Definition structure */
2438 drhd = acpi_data_push(table_data, sizeof(*drhd) + ioapic_scope_size);
2439 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
2440 drhd->length = cpu_to_le16(sizeof(*drhd) + ioapic_scope_size);
2441 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
2442 drhd->pci_segment = cpu_to_le16(0);
2443 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
2444
2445 /* Scope definition for the root-complex IOAPIC. See VT-d spec
2446 * 8.3.1 (version Oct. 2014 or later). */
2447 scope = &drhd->scope[0];
2448 scope->entry_type = 0x03; /* Type: 0x03 for IOAPIC */
2449 scope->length = ioapic_scope_size;
2450 scope->enumeration_id = ACPI_BUILD_IOAPIC_ID;
2451 scope->bus = Q35_PSEUDO_BUS_PLATFORM;
2452 scope->path[0].device = PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC);
2453 scope->path[0].function = PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC);
2454
2455 if (iommu->dt_supported) {
2456 atsr = acpi_data_push(table_data, sizeof(*atsr));
2457 atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR);
2458 atsr->length = cpu_to_le16(sizeof(*atsr));
2459 atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS;
2460 atsr->pci_segment = cpu_to_le16(0);
2461 }
2462
2463 build_header(linker, table_data, (void *)(table_data->data + dmar_start),
2464 "DMAR", table_data->len - dmar_start, 1, NULL, NULL);
2465 }
2466 /*
2467 * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2
2468 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf
2469 */
2470 #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0))
2471
2472 static void
2473 build_amd_iommu(GArray *table_data, BIOSLinker *linker)
2474 {
2475 int ivhd_table_len = 28;
2476 int iommu_start = table_data->len;
2477 AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default());
2478
2479 /* IVRS header */
2480 acpi_data_push(table_data, sizeof(AcpiTableHeader));
2481 /* IVinfo - IO virtualization information common to all
2482 * IOMMU units in a system
2483 */
2484 build_append_int_noprefix(table_data, 40UL << 8/* PASize */, 4);
2485 /* reserved */
2486 build_append_int_noprefix(table_data, 0, 8);
2487
2488 /* IVHD definition - type 10h */
2489 build_append_int_noprefix(table_data, 0x10, 1);
2490 /* virtualization flags */
2491 build_append_int_noprefix(table_data,
2492 (1UL << 0) | /* HtTunEn */
2493 (1UL << 4) | /* iotblSup */
2494 (1UL << 6) | /* PrefSup */
2495 (1UL << 7), /* PPRSup */
2496 1);
2497
2498 /*
2499 * When interrupt remapping is supported, we add a special IVHD device
2500 * for type IO-APIC.
2501 */
2502 if (x86_iommu_get_default()->intr_supported) {
2503 ivhd_table_len += 8;
2504 }
2505 /* IVHD length */
2506 build_append_int_noprefix(table_data, ivhd_table_len, 2);
2507 /* DeviceID */
2508 build_append_int_noprefix(table_data, s->devid, 2);
2509 /* Capability offset */
2510 build_append_int_noprefix(table_data, s->capab_offset, 2);
2511 /* IOMMU base address */
2512 build_append_int_noprefix(table_data, s->mmio.addr, 8);
2513 /* PCI Segment Group */
2514 build_append_int_noprefix(table_data, 0, 2);
2515 /* IOMMU info */
2516 build_append_int_noprefix(table_data, 0, 2);
2517 /* IOMMU Feature Reporting */
2518 build_append_int_noprefix(table_data,
2519 (48UL << 30) | /* HATS */
2520 (48UL << 28) | /* GATS */
2521 (1UL << 2) | /* GTSup */
2522 (1UL << 6), /* GASup */
2523 4);
2524 /*
2525 * Type 1 device entry reporting all devices
2526 * These are 4-byte device entries currently reporting the range of
2527 * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte)
2528 */
2529 build_append_int_noprefix(table_data, 0x0000001, 4);
2530
2531 /*
2532 * Add a special IVHD device type.
2533 * Refer to spec - Table 95: IVHD device entry type codes
2534 *
2535 * Linux IOMMU driver checks for the special IVHD device (type IO-APIC).
2536 * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059'
2537 */
2538 if (x86_iommu_get_default()->intr_supported) {
2539 build_append_int_noprefix(table_data,
2540 (0x1ull << 56) | /* type IOAPIC */
2541 (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */
2542 0x48, /* special device */
2543 8);
2544 }
2545
2546 build_header(linker, table_data, (void *)(table_data->data + iommu_start),
2547 "IVRS", table_data->len - iommu_start, 1, NULL, NULL);
2548 }
2549
2550 static GArray *
2551 build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt_tbl_offset)
2552 {
2553 AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
2554 unsigned rsdt_pa_size = sizeof(rsdp->rsdt_physical_address);
2555 unsigned rsdt_pa_offset =
2556 (char *)&rsdp->rsdt_physical_address - rsdp_table->data;
2557
2558 bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
2559 true /* fseg memory */);
2560
2561 memcpy(&rsdp->signature, "RSD PTR ", 8);
2562 memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
2563 /* Address to be filled by Guest linker */
2564 bios_linker_loader_add_pointer(linker,
2565 ACPI_BUILD_RSDP_FILE, rsdt_pa_offset, rsdt_pa_size,
2566 ACPI_BUILD_TABLE_FILE, rsdt_tbl_offset);
2567
2568 /* Checksum to be filled by Guest linker */
2569 bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
2570 (char *)rsdp - rsdp_table->data, sizeof *rsdp,
2571 (char *)&rsdp->checksum - rsdp_table->data);
2572
2573 return rsdp_table;
2574 }
2575
2576 typedef
2577 struct AcpiBuildState {
2578 /* Copy of table in RAM (for patching). */
2579 MemoryRegion *table_mr;
2580 /* Is table patched? */
2581 uint8_t patched;
2582 void *rsdp;
2583 MemoryRegion *rsdp_mr;
2584 MemoryRegion *linker_mr;
2585 } AcpiBuildState;
2586
2587 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
2588 {
2589 Object *pci_host;
2590 QObject *o;
2591
2592 pci_host = acpi_get_i386_pci_host();
2593 g_assert(pci_host);
2594
2595 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
2596 if (!o) {
2597 return false;
2598 }
2599 mcfg->mcfg_base = qnum_get_uint(qobject_to(QNum, o));
2600 qobject_unref(o);
2601
2602 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
2603 assert(o);
2604 mcfg->mcfg_size = qnum_get_uint(qobject_to(QNum, o));
2605 qobject_unref(o);
2606 return true;
2607 }
2608
2609 static
2610 void acpi_build(AcpiBuildTables *tables, MachineState *machine)
2611 {
2612 PCMachineState *pcms = PC_MACHINE(machine);
2613 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
2614 GArray *table_offsets;
2615 unsigned facs, dsdt, rsdt, fadt;
2616 AcpiPmInfo pm;
2617 AcpiMiscInfo misc;
2618 AcpiMcfgInfo mcfg;
2619 Range pci_hole, pci_hole64;
2620 uint8_t *u;
2621 size_t aml_len = 0;
2622 GArray *tables_blob = tables->table_data;
2623 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL };
2624 Object *vmgenid_dev;
2625
2626 acpi_get_pm_info(&pm);
2627 acpi_get_misc_info(&misc);
2628 acpi_get_pci_holes(&pci_hole, &pci_hole64);
2629 acpi_get_slic_oem(&slic_oem);
2630
2631 table_offsets = g_array_new(false, true /* clear */,
2632 sizeof(uint32_t));
2633 ACPI_BUILD_DPRINTF("init ACPI tables\n");
2634
2635 bios_linker_loader_alloc(tables->linker,
2636 ACPI_BUILD_TABLE_FILE, tables_blob,
2637 64 /* Ensure FACS is aligned */,
2638 false /* high memory */);
2639
2640 /*
2641 * FACS is pointed to by FADT.
2642 * We place it first since it's the only table that has alignment
2643 * requirements.
2644 */
2645 facs = tables_blob->len;
2646 build_facs(tables_blob, tables->linker);
2647
2648 /* DSDT is pointed to by FADT */
2649 dsdt = tables_blob->len;
2650 build_dsdt(tables_blob, tables->linker, &pm, &misc,
2651 &pci_hole, &pci_hole64, machine);
2652
2653 /* Count the size of the DSDT and SSDT, we will need it for legacy
2654 * sizing of ACPI tables.
2655 */
2656 aml_len += tables_blob->len - dsdt;
2657
2658 /* ACPI tables pointed to by RSDT */
2659 fadt = tables_blob->len;
2660 acpi_add_table(table_offsets, tables_blob);
2661 pm.fadt.facs_tbl_offset = &facs;
2662 pm.fadt.dsdt_tbl_offset = &dsdt;
2663 pm.fadt.xdsdt_tbl_offset = &dsdt;
2664 build_fadt(tables_blob, tables->linker, &pm.fadt,
2665 slic_oem.id, slic_oem.table_id);
2666 aml_len += tables_blob->len - fadt;
2667
2668 acpi_add_table(table_offsets, tables_blob);
2669 build_madt(tables_blob, tables->linker, pcms);
2670
2671 vmgenid_dev = find_vmgenid_dev();
2672 if (vmgenid_dev) {
2673 acpi_add_table(table_offsets, tables_blob);
2674 vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob,
2675 tables->vmgenid, tables->linker);
2676 }
2677
2678 if (misc.has_hpet) {
2679 acpi_add_table(table_offsets, tables_blob);
2680 build_hpet(tables_blob, tables->linker);
2681 }
2682 if (misc.tpm_version != TPM_VERSION_UNSPEC) {
2683 acpi_add_table(table_offsets, tables_blob);
2684 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
2685
2686 if (misc.tpm_version == TPM_VERSION_2_0) {
2687 acpi_add_table(table_offsets, tables_blob);
2688 build_tpm2(tables_blob, tables->linker, tables->tcpalog);
2689 }
2690 }
2691 if (pcms->numa_nodes) {
2692 acpi_add_table(table_offsets, tables_blob);
2693 build_srat(tables_blob, tables->linker, machine);
2694 if (have_numa_distance) {
2695 acpi_add_table(table_offsets, tables_blob);
2696 build_slit(tables_blob, tables->linker);
2697 }
2698 }
2699 if (acpi_get_mcfg(&mcfg)) {
2700 acpi_add_table(table_offsets, tables_blob);
2701 build_mcfg_q35(tables_blob, tables->linker, &mcfg);
2702 }
2703 if (x86_iommu_get_default()) {
2704 IommuType IOMMUType = x86_iommu_get_type();
2705 if (IOMMUType == TYPE_AMD) {
2706 acpi_add_table(table_offsets, tables_blob);
2707 build_amd_iommu(tables_blob, tables->linker);
2708 } else if (IOMMUType == TYPE_INTEL) {
2709 acpi_add_table(table_offsets, tables_blob);
2710 build_dmar_q35(tables_blob, tables->linker);
2711 }
2712 }
2713 if (pcms->acpi_nvdimm_state.is_enabled) {
2714 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
2715 &pcms->acpi_nvdimm_state, machine->ram_slots);
2716 }
2717
2718 /* Add tables supplied by user (if any) */
2719 for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
2720 unsigned len = acpi_table_len(u);
2721
2722 acpi_add_table(table_offsets, tables_blob);
2723 g_array_append_vals(tables_blob, u, len);
2724 }
2725
2726 /* RSDT is pointed to by RSDP */
2727 rsdt = tables_blob->len;
2728 build_rsdt(tables_blob, tables->linker, table_offsets,
2729 slic_oem.id, slic_oem.table_id);
2730
2731 /* RSDP is in FSEG memory, so allocate it separately */
2732 build_rsdp(tables->rsdp, tables->linker, rsdt);
2733
2734 /* We'll expose it all to Guest so we want to reduce
2735 * chance of size changes.
2736 *
2737 * We used to align the tables to 4k, but of course this would
2738 * too simple to be enough. 4k turned out to be too small an
2739 * alignment very soon, and in fact it is almost impossible to
2740 * keep the table size stable for all (max_cpus, max_memory_slots)
2741 * combinations. So the table size is always 64k for pc-i440fx-2.1
2742 * and we give an error if the table grows beyond that limit.
2743 *
2744 * We still have the problem of migrating from "-M pc-i440fx-2.0". For
2745 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
2746 * than 2.0 and we can always pad the smaller tables with zeros. We can
2747 * then use the exact size of the 2.0 tables.
2748 *
2749 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
2750 */
2751 if (pcmc->legacy_acpi_table_size) {
2752 /* Subtracting aml_len gives the size of fixed tables. Then add the
2753 * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
2754 */
2755 int legacy_aml_len =
2756 pcmc->legacy_acpi_table_size +
2757 ACPI_BUILD_LEGACY_CPU_AML_SIZE * pcms->apic_id_limit;
2758 int legacy_table_size =
2759 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
2760 ACPI_BUILD_ALIGN_SIZE);
2761 if (tables_blob->len > legacy_table_size) {
2762 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
2763 warn_report("ACPI table size %u exceeds %d bytes,"
2764 " migration may not work",
2765 tables_blob->len, legacy_table_size);
2766 error_printf("Try removing CPUs, NUMA nodes, memory slots"
2767 " or PCI bridges.");
2768 }
2769 g_array_set_size(tables_blob, legacy_table_size);
2770 } else {
2771 /* Make sure we have a buffer in case we need to resize the tables. */
2772 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
2773 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
2774 warn_report("ACPI table size %u exceeds %d bytes,"
2775 " migration may not work",
2776 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2);
2777 error_printf("Try removing CPUs, NUMA nodes, memory slots"
2778 " or PCI bridges.");
2779 }
2780 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
2781 }
2782
2783 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE);
2784
2785 /* Cleanup memory that's no longer used. */
2786 g_array_free(table_offsets, true);
2787 }
2788
2789 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
2790 {
2791 uint32_t size = acpi_data_len(data);
2792
2793 /* Make sure RAM size is correct - in case it got changed e.g. by migration */
2794 memory_region_ram_resize(mr, size, &error_abort);
2795
2796 memcpy(memory_region_get_ram_ptr(mr), data->data, size);
2797 memory_region_set_dirty(mr, 0, size);
2798 }
2799
2800 static void acpi_build_update(void *build_opaque)
2801 {
2802 AcpiBuildState *build_state = build_opaque;
2803 AcpiBuildTables tables;
2804
2805 /* No state to update or already patched? Nothing to do. */
2806 if (!build_state || build_state->patched) {
2807 return;
2808 }
2809 build_state->patched = 1;
2810
2811 acpi_build_tables_init(&tables);
2812
2813 acpi_build(&tables, MACHINE(qdev_get_machine()));
2814
2815 acpi_ram_update(build_state->table_mr, tables.table_data);
2816
2817 if (build_state->rsdp) {
2818 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp));
2819 } else {
2820 acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
2821 }
2822
2823 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
2824 acpi_build_tables_cleanup(&tables, true);
2825 }
2826
2827 static void acpi_build_reset(void *build_opaque)
2828 {
2829 AcpiBuildState *build_state = build_opaque;
2830 build_state->patched = 0;
2831 }
2832
2833 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
2834 GArray *blob, const char *name,
2835 uint64_t max_size)
2836 {
2837 return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
2838 name, acpi_build_update, build_state, NULL, true);
2839 }
2840
2841 static const VMStateDescription vmstate_acpi_build = {
2842 .name = "acpi_build",
2843 .version_id = 1,
2844 .minimum_version_id = 1,
2845 .fields = (VMStateField[]) {
2846 VMSTATE_UINT8(patched, AcpiBuildState),
2847 VMSTATE_END_OF_LIST()
2848 },
2849 };
2850
2851 void acpi_setup(void)
2852 {
2853 PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
2854 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
2855 AcpiBuildTables tables;
2856 AcpiBuildState *build_state;
2857 Object *vmgenid_dev;
2858
2859 if (!pcms->fw_cfg) {
2860 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
2861 return;
2862 }
2863
2864 if (!pcms->acpi_build_enabled) {
2865 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
2866 return;
2867 }
2868
2869 if (!acpi_enabled) {
2870 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
2871 return;
2872 }
2873
2874 build_state = g_malloc0(sizeof *build_state);
2875
2876 acpi_build_tables_init(&tables);
2877 acpi_build(&tables, MACHINE(pcms));
2878
2879 /* Now expose it all to Guest */
2880 build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
2881 ACPI_BUILD_TABLE_FILE,
2882 ACPI_BUILD_TABLE_MAX_SIZE);
2883 assert(build_state->table_mr != NULL);
2884
2885 build_state->linker_mr =
2886 acpi_add_rom_blob(build_state, tables.linker->cmd_blob,
2887 "etc/table-loader", 0);
2888
2889 fw_cfg_add_file(pcms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
2890 tables.tcpalog->data, acpi_data_len(tables.tcpalog));
2891
2892 vmgenid_dev = find_vmgenid_dev();
2893 if (vmgenid_dev) {
2894 vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), pcms->fw_cfg,
2895 tables.vmgenid);
2896 }
2897
2898 if (!pcmc->rsdp_in_ram) {
2899 /*
2900 * Keep for compatibility with old machine types.
2901 * Though RSDP is small, its contents isn't immutable, so
2902 * we'll update it along with the rest of tables on guest access.
2903 */
2904 uint32_t rsdp_size = acpi_data_len(tables.rsdp);
2905
2906 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size);
2907 fw_cfg_add_file_callback(pcms->fw_cfg, ACPI_BUILD_RSDP_FILE,
2908 acpi_build_update, NULL, build_state,
2909 build_state->rsdp, rsdp_size, true);
2910 build_state->rsdp_mr = NULL;
2911 } else {
2912 build_state->rsdp = NULL;
2913 build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
2914 ACPI_BUILD_RSDP_FILE, 0);
2915 }
2916
2917 qemu_register_reset(acpi_build_reset, build_state);
2918 acpi_build_reset(build_state);
2919 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state);
2920
2921 /* Cleanup tables but don't free the memory: we track it
2922 * in build_state.
2923 */
2924 acpi_build_tables_cleanup(&tables, false);
2925 }
QEmu