hw/arm/raspi: fix CPRMAN base address
[qemu.git] / hw / i386 / acpi-build.c
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 "acpi-common.h"
28 #include "qemu/bitmap.h"
29 #include "qemu/error-report.h"
30 #include "hw/pci/pci.h"
31 #include "hw/core/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/isa/isa.h"
41 #include "hw/block/fdc.h"
42 #include "hw/acpi/memory_hotplug.h"
43 #include "sysemu/tpm.h"
44 #include "hw/acpi/tpm.h"
45 #include "hw/acpi/vmgenid.h"
46 #include "hw/boards.h"
47 #include "sysemu/tpm_backend.h"
48 #include "hw/rtc/mc146818rtc_regs.h"
49 #include "migration/vmstate.h"
50 #include "hw/mem/memory-device.h"
51 #include "hw/mem/nvdimm.h"
52 #include "sysemu/numa.h"
53 #include "sysemu/reset.h"
54 #include "hw/hyperv/vmbus-bridge.h"
55
56 /* Supported chipsets: */
57 #include "hw/southbridge/piix.h"
58 #include "hw/acpi/pcihp.h"
59 #include "hw/i386/fw_cfg.h"
60 #include "hw/i386/ich9.h"
61 #include "hw/pci/pci_bus.h"
62 #include "hw/pci-host/q35.h"
63 #include "hw/i386/x86-iommu.h"
64
65 #include "hw/acpi/aml-build.h"
66 #include "hw/acpi/utils.h"
67 #include "hw/acpi/pci.h"
68
69 #include "qom/qom-qobject.h"
70 #include "hw/i386/amd_iommu.h"
71 #include "hw/i386/intel_iommu.h"
72
73 #include "hw/acpi/ipmi.h"
74 #include "hw/acpi/hmat.h"
75
76 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
77 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
78 * a little bit, there should be plenty of free space since the DSDT
79 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
80 */
81 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
82 #define ACPI_BUILD_ALIGN_SIZE 0x1000
83
84 #define ACPI_BUILD_TABLE_SIZE 0x20000
85
86 /* #define DEBUG_ACPI_BUILD */
87 #ifdef DEBUG_ACPI_BUILD
88 #define ACPI_BUILD_DPRINTF(fmt, ...) \
89 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
90 #else
91 #define ACPI_BUILD_DPRINTF(fmt, ...)
92 #endif
93
94 typedef struct AcpiPmInfo {
95 bool s3_disabled;
96 bool s4_disabled;
97 bool pcihp_bridge_en;
98 bool smi_on_cpuhp;
99 bool pcihp_root_en;
100 uint8_t s4_val;
101 AcpiFadtData fadt;
102 uint16_t cpu_hp_io_base;
103 uint16_t pcihp_io_base;
104 uint16_t pcihp_io_len;
105 } AcpiPmInfo;
106
107 typedef struct AcpiMiscInfo {
108 bool is_piix4;
109 bool has_hpet;
110 TPMVersion tpm_version;
111 const unsigned char *dsdt_code;
112 unsigned dsdt_size;
113 uint16_t pvpanic_port;
114 uint16_t applesmc_io_base;
115 } AcpiMiscInfo;
116
117 typedef struct AcpiBuildPciBusHotplugState {
118 GArray *device_table;
119 GArray *notify_table;
120 struct AcpiBuildPciBusHotplugState *parent;
121 bool pcihp_bridge_en;
122 } AcpiBuildPciBusHotplugState;
123
124 typedef struct FwCfgTPMConfig {
125 uint32_t tpmppi_address;
126 uint8_t tpm_version;
127 uint8_t tpmppi_version;
128 } QEMU_PACKED FwCfgTPMConfig;
129
130 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg);
131
132 const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio = {
133 .space_id = AML_AS_SYSTEM_IO,
134 .address = NVDIMM_ACPI_IO_BASE,
135 .bit_width = NVDIMM_ACPI_IO_LEN << 3
136 };
137
138 static void init_common_fadt_data(MachineState *ms, Object *o,
139 AcpiFadtData *data)
140 {
141 uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL);
142 AmlAddressSpace as = AML_AS_SYSTEM_IO;
143 AcpiFadtData fadt = {
144 .rev = 3,
145 .flags =
146 (1 << ACPI_FADT_F_WBINVD) |
147 (1 << ACPI_FADT_F_PROC_C1) |
148 (1 << ACPI_FADT_F_SLP_BUTTON) |
149 (1 << ACPI_FADT_F_RTC_S4) |
150 (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) |
151 /* APIC destination mode ("Flat Logical") has an upper limit of 8
152 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be
153 * used
154 */
155 ((ms->smp.max_cpus > 8) ?
156 (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0),
157 .int_model = 1 /* Multiple APIC */,
158 .rtc_century = RTC_CENTURY,
159 .plvl2_lat = 0xfff /* C2 state not supported */,
160 .plvl3_lat = 0xfff /* C3 state not supported */,
161 .smi_cmd = ACPI_PORT_SMI_CMD,
162 .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL),
163 .acpi_enable_cmd =
164 object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL),
165 .acpi_disable_cmd =
166 object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL),
167 .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io },
168 .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8,
169 .address = io + 0x04 },
170 .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 },
171 .gpe0_blk = { .space_id = as, .bit_width =
172 object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8,
173 .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL)
174 },
175 };
176 *data = fadt;
177 }
178
179 static Object *object_resolve_type_unambiguous(const char *typename)
180 {
181 bool ambig;
182 Object *o = object_resolve_path_type("", typename, &ambig);
183
184 if (ambig || !o) {
185 return NULL;
186 }
187 return o;
188 }
189
190 static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm)
191 {
192 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM);
193 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE);
194 Object *obj = piix ? piix : lpc;
195 QObject *o;
196 pm->cpu_hp_io_base = 0;
197 pm->pcihp_io_base = 0;
198 pm->pcihp_io_len = 0;
199 pm->smi_on_cpuhp = false;
200
201 assert(obj);
202 init_common_fadt_data(machine, obj, &pm->fadt);
203 if (piix) {
204 /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */
205 pm->fadt.rev = 1;
206 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE;
207 pm->pcihp_io_base =
208 object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL);
209 pm->pcihp_io_len =
210 object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL);
211 }
212 if (lpc) {
213 uint64_t smi_features = object_property_get_uint(lpc,
214 ICH9_LPC_SMI_NEGOTIATED_FEAT_PROP, NULL);
215 struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO,
216 .bit_width = 8, .address = ICH9_RST_CNT_IOPORT };
217 pm->fadt.reset_reg = r;
218 pm->fadt.reset_val = 0xf;
219 pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP;
220 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE;
221 pm->smi_on_cpuhp =
222 !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT));
223 }
224
225 /* The above need not be conditional on machine type because the reset port
226 * happens to be the same on PIIX (pc) and ICH9 (q35). */
227 QEMU_BUILD_BUG_ON(ICH9_RST_CNT_IOPORT != PIIX_RCR_IOPORT);
228
229 /* Fill in optional s3/s4 related properties */
230 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
231 if (o) {
232 pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o));
233 } else {
234 pm->s3_disabled = false;
235 }
236 qobject_unref(o);
237 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
238 if (o) {
239 pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o));
240 } else {
241 pm->s4_disabled = false;
242 }
243 qobject_unref(o);
244 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
245 if (o) {
246 pm->s4_val = qnum_get_uint(qobject_to(QNum, o));
247 } else {
248 pm->s4_val = false;
249 }
250 qobject_unref(o);
251
252 pm->pcihp_bridge_en =
253 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
254 NULL);
255 pm->pcihp_root_en =
256 object_property_get_bool(obj, "acpi-root-pci-hotplug",
257 NULL);
258 }
259
260 static void acpi_get_misc_info(AcpiMiscInfo *info)
261 {
262 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM);
263 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE);
264 assert(!!piix != !!lpc);
265
266 if (piix) {
267 info->is_piix4 = true;
268 }
269 if (lpc) {
270 info->is_piix4 = false;
271 }
272
273 info->has_hpet = hpet_find();
274 info->tpm_version = tpm_get_version(tpm_find());
275 info->pvpanic_port = pvpanic_port();
276 info->applesmc_io_base = applesmc_port();
277 }
278
279 /*
280 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE.
281 * On i386 arch we only have two pci hosts, so we can look only for them.
282 */
283 static Object *acpi_get_i386_pci_host(void)
284 {
285 PCIHostState *host;
286
287 host = OBJECT_CHECK(PCIHostState,
288 object_resolve_path("/machine/i440fx", NULL),
289 TYPE_PCI_HOST_BRIDGE);
290 if (!host) {
291 host = OBJECT_CHECK(PCIHostState,
292 object_resolve_path("/machine/q35", NULL),
293 TYPE_PCI_HOST_BRIDGE);
294 }
295
296 return OBJECT(host);
297 }
298
299 static void acpi_get_pci_holes(Range *hole, Range *hole64)
300 {
301 Object *pci_host;
302
303 pci_host = acpi_get_i386_pci_host();
304 g_assert(pci_host);
305
306 range_set_bounds1(hole,
307 object_property_get_uint(pci_host,
308 PCI_HOST_PROP_PCI_HOLE_START,
309 NULL),
310 object_property_get_uint(pci_host,
311 PCI_HOST_PROP_PCI_HOLE_END,
312 NULL));
313 range_set_bounds1(hole64,
314 object_property_get_uint(pci_host,
315 PCI_HOST_PROP_PCI_HOLE64_START,
316 NULL),
317 object_property_get_uint(pci_host,
318 PCI_HOST_PROP_PCI_HOLE64_END,
319 NULL));
320 }
321
322 static void acpi_align_size(GArray *blob, unsigned align)
323 {
324 /* Align size to multiple of given size. This reduces the chance
325 * we need to change size in the future (breaking cross version migration).
326 */
327 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
328 }
329
330 /* FACS */
331 static void
332 build_facs(GArray *table_data)
333 {
334 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
335 memcpy(&facs->signature, "FACS", 4);
336 facs->length = cpu_to_le32(sizeof(*facs));
337 }
338
339 static void build_append_pcihp_notify_entry(Aml *method, int slot)
340 {
341 Aml *if_ctx;
342 int32_t devfn = PCI_DEVFN(slot, 0);
343
344 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL));
345 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1)));
346 aml_append(method, if_ctx);
347 }
348
349 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
350 bool pcihp_bridge_en)
351 {
352 Aml *dev, *notify_method = NULL, *method;
353 QObject *bsel;
354 PCIBus *sec;
355 int i;
356
357 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
358 if (bsel) {
359 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
360
361 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
362 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED);
363 }
364
365 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
366 DeviceClass *dc;
367 PCIDeviceClass *pc;
368 PCIDevice *pdev = bus->devices[i];
369 int slot = PCI_SLOT(i);
370 bool hotplug_enabled_dev;
371 bool bridge_in_acpi;
372 bool cold_plugged_bridge;
373
374 if (!pdev) {
375 if (bsel) { /* add hotplug slots for non present devices */
376 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
377 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
378 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
379 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
380 aml_append(method,
381 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
382 );
383 aml_append(dev, method);
384 aml_append(parent_scope, dev);
385
386 build_append_pcihp_notify_entry(notify_method, slot);
387 }
388 continue;
389 }
390
391 pc = PCI_DEVICE_GET_CLASS(pdev);
392 dc = DEVICE_GET_CLASS(pdev);
393
394 /*
395 * Cold plugged bridges aren't themselves hot-pluggable.
396 * Hotplugged bridges *are* hot-pluggable.
397 */
398 cold_plugged_bridge = pc->is_bridge && !DEVICE(pdev)->hotplugged;
399 bridge_in_acpi = cold_plugged_bridge && pcihp_bridge_en;
400
401 hotplug_enabled_dev = bsel && dc->hotpluggable && !cold_plugged_bridge;
402
403 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
404 continue;
405 }
406
407 /* start to compose PCI slot descriptor */
408 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
409 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
410
411 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
412 /* add VGA specific AML methods */
413 int s3d;
414
415 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
416 s3d = 3;
417 } else {
418 s3d = 0;
419 }
420
421 method = aml_method("_S1D", 0, AML_NOTSERIALIZED);
422 aml_append(method, aml_return(aml_int(0)));
423 aml_append(dev, method);
424
425 method = aml_method("_S2D", 0, AML_NOTSERIALIZED);
426 aml_append(method, aml_return(aml_int(0)));
427 aml_append(dev, method);
428
429 method = aml_method("_S3D", 0, AML_NOTSERIALIZED);
430 aml_append(method, aml_return(aml_int(s3d)));
431 aml_append(dev, method);
432 } else if (hotplug_enabled_dev) {
433 /* add _SUN/_EJ0 to make slot hotpluggable */
434 aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
435
436 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
437 aml_append(method,
438 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
439 );
440 aml_append(dev, method);
441
442 if (bsel) {
443 build_append_pcihp_notify_entry(notify_method, slot);
444 }
445 } else if (bridge_in_acpi) {
446 /*
447 * device is coldplugged bridge,
448 * add child device descriptions into its scope
449 */
450 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
451
452 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en);
453 }
454 /* slot descriptor has been composed, add it into parent context */
455 aml_append(parent_scope, dev);
456 }
457
458 if (bsel) {
459 aml_append(parent_scope, notify_method);
460 }
461
462 /* Append PCNT method to notify about events on local and child buses.
463 * Add this method for root bus only when hotplug is enabled since DSDT
464 * expects it.
465 */
466 if (bsel || pcihp_bridge_en) {
467 method = aml_method("PCNT", 0, AML_NOTSERIALIZED);
468 }
469 /* If bus supports hotplug select it and notify about local events */
470 if (bsel) {
471 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
472
473 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM")));
474 aml_append(method,
475 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */)
476 );
477 aml_append(method,
478 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */)
479 );
480 }
481
482 /* Notify about child bus events in any case */
483 if (pcihp_bridge_en) {
484 QLIST_FOREACH(sec, &bus->child, sibling) {
485 int32_t devfn = sec->parent_dev->devfn;
486
487 if (pci_bus_is_root(sec) || pci_bus_is_express(sec)) {
488 continue;
489 }
490
491 aml_append(method, aml_name("^S%.02X.PCNT", devfn));
492 }
493 }
494
495 if (bsel || pcihp_bridge_en) {
496 aml_append(parent_scope, method);
497 }
498 qobject_unref(bsel);
499 }
500
501 /**
502 * build_prt_entry:
503 * @link_name: link name for PCI route entry
504 *
505 * build AML package containing a PCI route entry for @link_name
506 */
507 static Aml *build_prt_entry(const char *link_name)
508 {
509 Aml *a_zero = aml_int(0);
510 Aml *pkg = aml_package(4);
511 aml_append(pkg, a_zero);
512 aml_append(pkg, a_zero);
513 aml_append(pkg, aml_name("%s", link_name));
514 aml_append(pkg, a_zero);
515 return pkg;
516 }
517
518 /*
519 * initialize_route - Initialize the interrupt routing rule
520 * through a specific LINK:
521 * if (lnk_idx == idx)
522 * route using link 'link_name'
523 */
524 static Aml *initialize_route(Aml *route, const char *link_name,
525 Aml *lnk_idx, int idx)
526 {
527 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx)));
528 Aml *pkg = build_prt_entry(link_name);
529
530 aml_append(if_ctx, aml_store(pkg, route));
531
532 return if_ctx;
533 }
534
535 /*
536 * build_prt - Define interrupt rounting rules
537 *
538 * Returns an array of 128 routes, one for each device,
539 * based on device location.
540 * The main goal is to equaly distribute the interrupts
541 * over the 4 existing ACPI links (works only for i440fx).
542 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]".
543 *
544 */
545 static Aml *build_prt(bool is_pci0_prt)
546 {
547 Aml *method, *while_ctx, *pin, *res;
548
549 method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
550 res = aml_local(0);
551 pin = aml_local(1);
552 aml_append(method, aml_store(aml_package(128), res));
553 aml_append(method, aml_store(aml_int(0), pin));
554
555 /* while (pin < 128) */
556 while_ctx = aml_while(aml_lless(pin, aml_int(128)));
557 {
558 Aml *slot = aml_local(2);
559 Aml *lnk_idx = aml_local(3);
560 Aml *route = aml_local(4);
561
562 /* slot = pin >> 2 */
563 aml_append(while_ctx,
564 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot));
565 /* lnk_idx = (slot + pin) & 3 */
566 aml_append(while_ctx,
567 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL),
568 lnk_idx));
569
570 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */
571 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0));
572 if (is_pci0_prt) {
573 Aml *if_device_1, *if_pin_4, *else_pin_4;
574
575 /* device 1 is the power-management device, needs SCI */
576 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1)));
577 {
578 if_pin_4 = aml_if(aml_equal(pin, aml_int(4)));
579 {
580 aml_append(if_pin_4,
581 aml_store(build_prt_entry("LNKS"), route));
582 }
583 aml_append(if_device_1, if_pin_4);
584 else_pin_4 = aml_else();
585 {
586 aml_append(else_pin_4,
587 aml_store(build_prt_entry("LNKA"), route));
588 }
589 aml_append(if_device_1, else_pin_4);
590 }
591 aml_append(while_ctx, if_device_1);
592 } else {
593 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1));
594 }
595 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2));
596 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3));
597
598 /* route[0] = 0x[slot]FFFF */
599 aml_append(while_ctx,
600 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF),
601 NULL),
602 aml_index(route, aml_int(0))));
603 /* route[1] = pin & 3 */
604 aml_append(while_ctx,
605 aml_store(aml_and(pin, aml_int(3), NULL),
606 aml_index(route, aml_int(1))));
607 /* res[pin] = route */
608 aml_append(while_ctx, aml_store(route, aml_index(res, pin)));
609 /* pin++ */
610 aml_append(while_ctx, aml_increment(pin));
611 }
612 aml_append(method, while_ctx);
613 /* return res*/
614 aml_append(method, aml_return(res));
615
616 return method;
617 }
618
619 typedef struct CrsRangeEntry {
620 uint64_t base;
621 uint64_t limit;
622 } CrsRangeEntry;
623
624 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit)
625 {
626 CrsRangeEntry *entry;
627
628 entry = g_malloc(sizeof(*entry));
629 entry->base = base;
630 entry->limit = limit;
631
632 g_ptr_array_add(ranges, entry);
633 }
634
635 static void crs_range_free(gpointer data)
636 {
637 CrsRangeEntry *entry = (CrsRangeEntry *)data;
638 g_free(entry);
639 }
640
641 typedef struct CrsRangeSet {
642 GPtrArray *io_ranges;
643 GPtrArray *mem_ranges;
644 GPtrArray *mem_64bit_ranges;
645 } CrsRangeSet;
646
647 static void crs_range_set_init(CrsRangeSet *range_set)
648 {
649 range_set->io_ranges = g_ptr_array_new_with_free_func(crs_range_free);
650 range_set->mem_ranges = g_ptr_array_new_with_free_func(crs_range_free);
651 range_set->mem_64bit_ranges =
652 g_ptr_array_new_with_free_func(crs_range_free);
653 }
654
655 static void crs_range_set_free(CrsRangeSet *range_set)
656 {
657 g_ptr_array_free(range_set->io_ranges, true);
658 g_ptr_array_free(range_set->mem_ranges, true);
659 g_ptr_array_free(range_set->mem_64bit_ranges, true);
660 }
661
662 static gint crs_range_compare(gconstpointer a, gconstpointer b)
663 {
664 CrsRangeEntry *entry_a = *(CrsRangeEntry **)a;
665 CrsRangeEntry *entry_b = *(CrsRangeEntry **)b;
666
667 if (entry_a->base < entry_b->base) {
668 return -1;
669 } else if (entry_a->base > entry_b->base) {
670 return 1;
671 } else {
672 return 0;
673 }
674 }
675
676 /*
677 * crs_replace_with_free_ranges - given the 'used' ranges within [start - end]
678 * interval, computes the 'free' ranges from the same interval.
679 * Example: If the input array is { [a1 - a2],[b1 - b2] }, the function
680 * will return { [base - a1], [a2 - b1], [b2 - limit] }.
681 */
682 static void crs_replace_with_free_ranges(GPtrArray *ranges,
683 uint64_t start, uint64_t end)
684 {
685 GPtrArray *free_ranges = g_ptr_array_new();
686 uint64_t free_base = start;
687 int i;
688
689 g_ptr_array_sort(ranges, crs_range_compare);
690 for (i = 0; i < ranges->len; i++) {
691 CrsRangeEntry *used = g_ptr_array_index(ranges, i);
692
693 if (free_base < used->base) {
694 crs_range_insert(free_ranges, free_base, used->base - 1);
695 }
696
697 free_base = used->limit + 1;
698 }
699
700 if (free_base < end) {
701 crs_range_insert(free_ranges, free_base, end);
702 }
703
704 g_ptr_array_set_size(ranges, 0);
705 for (i = 0; i < free_ranges->len; i++) {
706 g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i));
707 }
708
709 g_ptr_array_free(free_ranges, true);
710 }
711
712 /*
713 * crs_range_merge - merges adjacent ranges in the given array.
714 * Array elements are deleted and replaced with the merged ranges.
715 */
716 static void crs_range_merge(GPtrArray *range)
717 {
718 GPtrArray *tmp = g_ptr_array_new_with_free_func(crs_range_free);
719 CrsRangeEntry *entry;
720 uint64_t range_base, range_limit;
721 int i;
722
723 if (!range->len) {
724 return;
725 }
726
727 g_ptr_array_sort(range, crs_range_compare);
728
729 entry = g_ptr_array_index(range, 0);
730 range_base = entry->base;
731 range_limit = entry->limit;
732 for (i = 1; i < range->len; i++) {
733 entry = g_ptr_array_index(range, i);
734 if (entry->base - 1 == range_limit) {
735 range_limit = entry->limit;
736 } else {
737 crs_range_insert(tmp, range_base, range_limit);
738 range_base = entry->base;
739 range_limit = entry->limit;
740 }
741 }
742 crs_range_insert(tmp, range_base, range_limit);
743
744 g_ptr_array_set_size(range, 0);
745 for (i = 0; i < tmp->len; i++) {
746 entry = g_ptr_array_index(tmp, i);
747 crs_range_insert(range, entry->base, entry->limit);
748 }
749 g_ptr_array_free(tmp, true);
750 }
751
752 static Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set)
753 {
754 Aml *crs = aml_resource_template();
755 CrsRangeSet temp_range_set;
756 CrsRangeEntry *entry;
757 uint8_t max_bus = pci_bus_num(host->bus);
758 uint8_t type;
759 int devfn;
760 int i;
761
762 crs_range_set_init(&temp_range_set);
763 for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) {
764 uint64_t range_base, range_limit;
765 PCIDevice *dev = host->bus->devices[devfn];
766
767 if (!dev) {
768 continue;
769 }
770
771 for (i = 0; i < PCI_NUM_REGIONS; i++) {
772 PCIIORegion *r = &dev->io_regions[i];
773
774 range_base = r->addr;
775 range_limit = r->addr + r->size - 1;
776
777 /*
778 * Work-around for old bioses
779 * that do not support multiple root buses
780 */
781 if (!range_base || range_base > range_limit) {
782 continue;
783 }
784
785 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
786 crs_range_insert(temp_range_set.io_ranges,
787 range_base, range_limit);
788 } else { /* "memory" */
789 crs_range_insert(temp_range_set.mem_ranges,
790 range_base, range_limit);
791 }
792 }
793
794 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
795 if (type == PCI_HEADER_TYPE_BRIDGE) {
796 uint8_t subordinate = dev->config[PCI_SUBORDINATE_BUS];
797 if (subordinate > max_bus) {
798 max_bus = subordinate;
799 }
800
801 range_base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO);
802 range_limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO);
803
804 /*
805 * Work-around for old bioses
806 * that do not support multiple root buses
807 */
808 if (range_base && range_base <= range_limit) {
809 crs_range_insert(temp_range_set.io_ranges,
810 range_base, range_limit);
811 }
812
813 range_base =
814 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
815 range_limit =
816 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
817
818 /*
819 * Work-around for old bioses
820 * that do not support multiple root buses
821 */
822 if (range_base && range_base <= range_limit) {
823 uint64_t length = range_limit - range_base + 1;
824 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) {
825 crs_range_insert(temp_range_set.mem_ranges,
826 range_base, range_limit);
827 } else {
828 crs_range_insert(temp_range_set.mem_64bit_ranges,
829 range_base, range_limit);
830 }
831 }
832
833 range_base =
834 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
835 range_limit =
836 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
837
838 /*
839 * Work-around for old bioses
840 * that do not support multiple root buses
841 */
842 if (range_base && range_base <= range_limit) {
843 uint64_t length = range_limit - range_base + 1;
844 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) {
845 crs_range_insert(temp_range_set.mem_ranges,
846 range_base, range_limit);
847 } else {
848 crs_range_insert(temp_range_set.mem_64bit_ranges,
849 range_base, range_limit);
850 }
851 }
852 }
853 }
854
855 crs_range_merge(temp_range_set.io_ranges);
856 for (i = 0; i < temp_range_set.io_ranges->len; i++) {
857 entry = g_ptr_array_index(temp_range_set.io_ranges, i);
858 aml_append(crs,
859 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
860 AML_POS_DECODE, AML_ENTIRE_RANGE,
861 0, entry->base, entry->limit, 0,
862 entry->limit - entry->base + 1));
863 crs_range_insert(range_set->io_ranges, entry->base, entry->limit);
864 }
865
866 crs_range_merge(temp_range_set.mem_ranges);
867 for (i = 0; i < temp_range_set.mem_ranges->len; i++) {
868 entry = g_ptr_array_index(temp_range_set.mem_ranges, i);
869 aml_append(crs,
870 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
871 AML_MAX_FIXED, AML_NON_CACHEABLE,
872 AML_READ_WRITE,
873 0, entry->base, entry->limit, 0,
874 entry->limit - entry->base + 1));
875 crs_range_insert(range_set->mem_ranges, entry->base, entry->limit);
876 }
877
878 crs_range_merge(temp_range_set.mem_64bit_ranges);
879 for (i = 0; i < temp_range_set.mem_64bit_ranges->len; i++) {
880 entry = g_ptr_array_index(temp_range_set.mem_64bit_ranges, i);
881 aml_append(crs,
882 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
883 AML_MAX_FIXED, AML_NON_CACHEABLE,
884 AML_READ_WRITE,
885 0, entry->base, entry->limit, 0,
886 entry->limit - entry->base + 1));
887 crs_range_insert(range_set->mem_64bit_ranges,
888 entry->base, entry->limit);
889 }
890
891 crs_range_set_free(&temp_range_set);
892
893 aml_append(crs,
894 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
895 0,
896 pci_bus_num(host->bus),
897 max_bus,
898 0,
899 max_bus - pci_bus_num(host->bus) + 1));
900
901 return crs;
902 }
903
904 static void build_hpet_aml(Aml *table)
905 {
906 Aml *crs;
907 Aml *field;
908 Aml *method;
909 Aml *if_ctx;
910 Aml *scope = aml_scope("_SB");
911 Aml *dev = aml_device("HPET");
912 Aml *zero = aml_int(0);
913 Aml *id = aml_local(0);
914 Aml *period = aml_local(1);
915
916 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103")));
917 aml_append(dev, aml_name_decl("_UID", zero));
918
919 aml_append(dev,
920 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE),
921 HPET_LEN));
922 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE);
923 aml_append(field, aml_named_field("VEND", 32));
924 aml_append(field, aml_named_field("PRD", 32));
925 aml_append(dev, field);
926
927 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
928 aml_append(method, aml_store(aml_name("VEND"), id));
929 aml_append(method, aml_store(aml_name("PRD"), period));
930 aml_append(method, aml_shiftright(id, aml_int(16), id));
931 if_ctx = aml_if(aml_lor(aml_equal(id, zero),
932 aml_equal(id, aml_int(0xffff))));
933 {
934 aml_append(if_ctx, aml_return(zero));
935 }
936 aml_append(method, if_ctx);
937
938 if_ctx = aml_if(aml_lor(aml_equal(period, zero),
939 aml_lgreater(period, aml_int(100000000))));
940 {
941 aml_append(if_ctx, aml_return(zero));
942 }
943 aml_append(method, if_ctx);
944
945 aml_append(method, aml_return(aml_int(0x0F)));
946 aml_append(dev, method);
947
948 crs = aml_resource_template();
949 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY));
950 aml_append(dev, aml_name_decl("_CRS", crs));
951
952 aml_append(scope, dev);
953 aml_append(table, scope);
954 }
955
956 static Aml *build_vmbus_device_aml(VMBusBridge *vmbus_bridge)
957 {
958 Aml *dev;
959 Aml *method;
960 Aml *crs;
961
962 dev = aml_device("VMBS");
963 aml_append(dev, aml_name_decl("STA", aml_int(0xF)));
964 aml_append(dev, aml_name_decl("_HID", aml_string("VMBus")));
965 aml_append(dev, aml_name_decl("_UID", aml_int(0x0)));
966 aml_append(dev, aml_name_decl("_DDN", aml_string("VMBUS")));
967
968 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
969 aml_append(method, aml_store(aml_and(aml_name("STA"), aml_int(0xD), NULL),
970 aml_name("STA")));
971 aml_append(dev, method);
972
973 method = aml_method("_PS0", 0, AML_NOTSERIALIZED);
974 aml_append(method, aml_store(aml_or(aml_name("STA"), aml_int(0xF), NULL),
975 aml_name("STA")));
976 aml_append(dev, method);
977
978 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
979 aml_append(method, aml_return(aml_name("STA")));
980 aml_append(dev, method);
981
982 aml_append(dev, aml_name_decl("_PS3", aml_int(0x0)));
983
984 crs = aml_resource_template();
985 aml_append(crs, aml_irq_no_flags(vmbus_bridge->irq));
986 aml_append(dev, aml_name_decl("_CRS", crs));
987
988 return dev;
989 }
990
991 static void build_isa_devices_aml(Aml *table)
992 {
993 bool ambiguous;
994 Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
995 Aml *scope;
996
997 assert(obj && !ambiguous);
998
999 scope = aml_scope("_SB.PCI0.ISA");
1000 build_acpi_ipmi_devices(scope, BUS(obj), "\\_SB.PCI0.ISA");
1001 isa_build_aml(ISA_BUS(obj), scope);
1002
1003 aml_append(table, scope);
1004 }
1005
1006 static void build_dbg_aml(Aml *table)
1007 {
1008 Aml *field;
1009 Aml *method;
1010 Aml *while_ctx;
1011 Aml *scope = aml_scope("\\");
1012 Aml *buf = aml_local(0);
1013 Aml *len = aml_local(1);
1014 Aml *idx = aml_local(2);
1015
1016 aml_append(scope,
1017 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01));
1018 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1019 aml_append(field, aml_named_field("DBGB", 8));
1020 aml_append(scope, field);
1021
1022 method = aml_method("DBUG", 1, AML_NOTSERIALIZED);
1023
1024 aml_append(method, aml_to_hexstring(aml_arg(0), buf));
1025 aml_append(method, aml_to_buffer(buf, buf));
1026 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len));
1027 aml_append(method, aml_store(aml_int(0), idx));
1028
1029 while_ctx = aml_while(aml_lless(idx, len));
1030 aml_append(while_ctx,
1031 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB")));
1032 aml_append(while_ctx, aml_increment(idx));
1033 aml_append(method, while_ctx);
1034
1035 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB")));
1036 aml_append(scope, method);
1037
1038 aml_append(table, scope);
1039 }
1040
1041 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg)
1042 {
1043 Aml *dev;
1044 Aml *crs;
1045 Aml *method;
1046 uint32_t irqs[] = {5, 10, 11};
1047
1048 dev = aml_device("%s", name);
1049 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1050 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1051
1052 crs = aml_resource_template();
1053 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
1054 AML_SHARED, irqs, ARRAY_SIZE(irqs)));
1055 aml_append(dev, aml_name_decl("_PRS", crs));
1056
1057 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1058 aml_append(method, aml_return(aml_call1("IQST", reg)));
1059 aml_append(dev, method);
1060
1061 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1062 aml_append(method, aml_or(reg, aml_int(0x80), reg));
1063 aml_append(dev, method);
1064
1065 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1066 aml_append(method, aml_return(aml_call1("IQCR", reg)));
1067 aml_append(dev, method);
1068
1069 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1070 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI"));
1071 aml_append(method, aml_store(aml_name("PRRI"), reg));
1072 aml_append(dev, method);
1073
1074 return dev;
1075 }
1076
1077 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi)
1078 {
1079 Aml *dev;
1080 Aml *crs;
1081 Aml *method;
1082 uint32_t irqs;
1083
1084 dev = aml_device("%s", name);
1085 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1086 aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
1087
1088 crs = aml_resource_template();
1089 irqs = gsi;
1090 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
1091 AML_SHARED, &irqs, 1));
1092 aml_append(dev, aml_name_decl("_PRS", crs));
1093
1094 aml_append(dev, aml_name_decl("_CRS", crs));
1095
1096 /*
1097 * _DIS can be no-op because the interrupt cannot be disabled.
1098 */
1099 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1100 aml_append(dev, method);
1101
1102 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1103 aml_append(dev, method);
1104
1105 return dev;
1106 }
1107
1108 /* _CRS method - get current settings */
1109 static Aml *build_iqcr_method(bool is_piix4)
1110 {
1111 Aml *if_ctx;
1112 uint32_t irqs;
1113 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED);
1114 Aml *crs = aml_resource_template();
1115
1116 irqs = 0;
1117 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
1118 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1));
1119 aml_append(method, aml_name_decl("PRR0", crs));
1120
1121 aml_append(method,
1122 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI"));
1123
1124 if (is_piix4) {
1125 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80)));
1126 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI")));
1127 aml_append(method, if_ctx);
1128 } else {
1129 aml_append(method,
1130 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL),
1131 aml_name("PRRI")));
1132 }
1133
1134 aml_append(method, aml_return(aml_name("PRR0")));
1135 return method;
1136 }
1137
1138 /* _STA method - get status */
1139 static Aml *build_irq_status_method(void)
1140 {
1141 Aml *if_ctx;
1142 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED);
1143
1144 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL));
1145 aml_append(if_ctx, aml_return(aml_int(0x09)));
1146 aml_append(method, if_ctx);
1147 aml_append(method, aml_return(aml_int(0x0B)));
1148 return method;
1149 }
1150
1151 static void build_piix4_pci0_int(Aml *table)
1152 {
1153 Aml *dev;
1154 Aml *crs;
1155 Aml *field;
1156 Aml *method;
1157 uint32_t irqs;
1158 Aml *sb_scope = aml_scope("_SB");
1159 Aml *pci0_scope = aml_scope("PCI0");
1160
1161 aml_append(pci0_scope, build_prt(true));
1162 aml_append(sb_scope, pci0_scope);
1163
1164 field = aml_field("PCI0.ISA.P40C", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1165 aml_append(field, aml_named_field("PRQ0", 8));
1166 aml_append(field, aml_named_field("PRQ1", 8));
1167 aml_append(field, aml_named_field("PRQ2", 8));
1168 aml_append(field, aml_named_field("PRQ3", 8));
1169 aml_append(sb_scope, field);
1170
1171 aml_append(sb_scope, build_irq_status_method());
1172 aml_append(sb_scope, build_iqcr_method(true));
1173
1174 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0")));
1175 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1")));
1176 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2")));
1177 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3")));
1178
1179 dev = aml_device("LNKS");
1180 {
1181 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
1182 aml_append(dev, aml_name_decl("_UID", aml_int(4)));
1183
1184 crs = aml_resource_template();
1185 irqs = 9;
1186 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
1187 AML_ACTIVE_HIGH, AML_SHARED,
1188 &irqs, 1));
1189 aml_append(dev, aml_name_decl("_PRS", crs));
1190
1191 /* The SCI cannot be disabled and is always attached to GSI 9,
1192 * so these are no-ops. We only need this link to override the
1193 * polarity to active high and match the content of the MADT.
1194 */
1195 method = aml_method("_STA", 0, AML_NOTSERIALIZED);
1196 aml_append(method, aml_return(aml_int(0x0b)));
1197 aml_append(dev, method);
1198
1199 method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
1200 aml_append(dev, method);
1201
1202 method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
1203 aml_append(method, aml_return(aml_name("_PRS")));
1204 aml_append(dev, method);
1205
1206 method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
1207 aml_append(dev, method);
1208 }
1209 aml_append(sb_scope, dev);
1210
1211 aml_append(table, sb_scope);
1212 }
1213
1214 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name)
1215 {
1216 int i;
1217 int head;
1218 Aml *pkg;
1219 char base = name[3] < 'E' ? 'A' : 'E';
1220 char *s = g_strdup(name);
1221 Aml *a_nr = aml_int((nr << 16) | 0xffff);
1222
1223 assert(strlen(s) == 4);
1224
1225 head = name[3] - base;
1226 for (i = 0; i < 4; i++) {
1227 if (head + i > 3) {
1228 head = i * -1;
1229 }
1230 s[3] = base + head + i;
1231 pkg = aml_package(4);
1232 aml_append(pkg, a_nr);
1233 aml_append(pkg, aml_int(i));
1234 aml_append(pkg, aml_name("%s", s));
1235 aml_append(pkg, aml_int(0));
1236 aml_append(ctx, pkg);
1237 }
1238 g_free(s);
1239 }
1240
1241 static Aml *build_q35_routing_table(const char *str)
1242 {
1243 int i;
1244 Aml *pkg;
1245 char *name = g_strdup_printf("%s ", str);
1246
1247 pkg = aml_package(128);
1248 for (i = 0; i < 0x18; i++) {
1249 name[3] = 'E' + (i & 0x3);
1250 append_q35_prt_entry(pkg, i, name);
1251 }
1252
1253 name[3] = 'E';
1254 append_q35_prt_entry(pkg, 0x18, name);
1255
1256 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */
1257 for (i = 0x0019; i < 0x1e; i++) {
1258 name[3] = 'A';
1259 append_q35_prt_entry(pkg, i, name);
1260 }
1261
1262 /* PCIe->PCI bridge. use PIRQ[E-H] */
1263 name[3] = 'E';
1264 append_q35_prt_entry(pkg, 0x1e, name);
1265 name[3] = 'A';
1266 append_q35_prt_entry(pkg, 0x1f, name);
1267
1268 g_free(name);
1269 return pkg;
1270 }
1271
1272 static void build_q35_pci0_int(Aml *table)
1273 {
1274 Aml *field;
1275 Aml *method;
1276 Aml *sb_scope = aml_scope("_SB");
1277 Aml *pci0_scope = aml_scope("PCI0");
1278
1279 /* Zero => PIC mode, One => APIC Mode */
1280 aml_append(table, aml_name_decl("PICF", aml_int(0)));
1281 method = aml_method("_PIC", 1, AML_NOTSERIALIZED);
1282 {
1283 aml_append(method, aml_store(aml_arg(0), aml_name("PICF")));
1284 }
1285 aml_append(table, method);
1286
1287 aml_append(pci0_scope,
1288 aml_name_decl("PRTP", build_q35_routing_table("LNK")));
1289 aml_append(pci0_scope,
1290 aml_name_decl("PRTA", build_q35_routing_table("GSI")));
1291
1292 method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
1293 {
1294 Aml *if_ctx;
1295 Aml *else_ctx;
1296
1297 /* PCI IRQ routing table, example from ACPI 2.0a specification,
1298 section 6.2.8.1 */
1299 /* Note: we provide the same info as the PCI routing
1300 table of the Bochs BIOS */
1301 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0)));
1302 aml_append(if_ctx, aml_return(aml_name("PRTP")));
1303 aml_append(method, if_ctx);
1304 else_ctx = aml_else();
1305 aml_append(else_ctx, aml_return(aml_name("PRTA")));
1306 aml_append(method, else_ctx);
1307 }
1308 aml_append(pci0_scope, method);
1309 aml_append(sb_scope, pci0_scope);
1310
1311 field = aml_field("PCI0.ISA.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1312 aml_append(field, aml_named_field("PRQA", 8));
1313 aml_append(field, aml_named_field("PRQB", 8));
1314 aml_append(field, aml_named_field("PRQC", 8));
1315 aml_append(field, aml_named_field("PRQD", 8));
1316 aml_append(field, aml_reserved_field(0x20));
1317 aml_append(field, aml_named_field("PRQE", 8));
1318 aml_append(field, aml_named_field("PRQF", 8));
1319 aml_append(field, aml_named_field("PRQG", 8));
1320 aml_append(field, aml_named_field("PRQH", 8));
1321 aml_append(sb_scope, field);
1322
1323 aml_append(sb_scope, build_irq_status_method());
1324 aml_append(sb_scope, build_iqcr_method(false));
1325
1326 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA")));
1327 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB")));
1328 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC")));
1329 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD")));
1330 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE")));
1331 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF")));
1332 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG")));
1333 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH")));
1334
1335 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10));
1336 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11));
1337 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12));
1338 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13));
1339 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14));
1340 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15));
1341 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16));
1342 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17));
1343
1344 aml_append(table, sb_scope);
1345 }
1346
1347 static void build_q35_isa_bridge(Aml *table)
1348 {
1349 Aml *dev;
1350 Aml *scope;
1351
1352 scope = aml_scope("_SB.PCI0");
1353 dev = aml_device("ISA");
1354 aml_append(dev, aml_name_decl("_ADR", aml_int(0x001F0000)));
1355
1356 /* ICH9 PCI to ISA irq remapping */
1357 aml_append(dev, aml_operation_region("PIRQ", AML_PCI_CONFIG,
1358 aml_int(0x60), 0x0C));
1359
1360 aml_append(scope, dev);
1361 aml_append(table, scope);
1362 }
1363
1364 static void build_piix4_isa_bridge(Aml *table)
1365 {
1366 Aml *dev;
1367 Aml *scope;
1368
1369 scope = aml_scope("_SB.PCI0");
1370 dev = aml_device("ISA");
1371 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010000)));
1372
1373 /* PIIX PCI to ISA irq remapping */
1374 aml_append(dev, aml_operation_region("P40C", AML_PCI_CONFIG,
1375 aml_int(0x60), 0x04));
1376
1377 aml_append(scope, dev);
1378 aml_append(table, scope);
1379 }
1380
1381 static void build_piix4_pci_hotplug(Aml *table)
1382 {
1383 Aml *scope;
1384 Aml *field;
1385 Aml *method;
1386
1387 scope = aml_scope("_SB.PCI0");
1388
1389 aml_append(scope,
1390 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08));
1391 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1392 aml_append(field, aml_named_field("PCIU", 32));
1393 aml_append(field, aml_named_field("PCID", 32));
1394 aml_append(scope, field);
1395
1396 aml_append(scope,
1397 aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04));
1398 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1399 aml_append(field, aml_named_field("B0EJ", 32));
1400 aml_append(scope, field);
1401
1402 aml_append(scope,
1403 aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04));
1404 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
1405 aml_append(field, aml_named_field("BNUM", 32));
1406 aml_append(scope, field);
1407
1408 aml_append(scope, aml_mutex("BLCK", 0));
1409
1410 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED);
1411 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
1412 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
1413 aml_append(method,
1414 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ")));
1415 aml_append(method, aml_release(aml_name("BLCK")));
1416 aml_append(method, aml_return(aml_int(0)));
1417 aml_append(scope, method);
1418
1419 aml_append(table, scope);
1420 }
1421
1422 static Aml *build_q35_osc_method(void)
1423 {
1424 Aml *if_ctx;
1425 Aml *if_ctx2;
1426 Aml *else_ctx;
1427 Aml *method;
1428 Aml *a_cwd1 = aml_name("CDW1");
1429 Aml *a_ctrl = aml_local(0);
1430
1431 method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
1432 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
1433
1434 if_ctx = aml_if(aml_equal(
1435 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766")));
1436 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
1437 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
1438
1439 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl));
1440
1441 /*
1442 * Always allow native PME, AER (no dependencies)
1443 * Allow SHPC (PCI bridges can have SHPC controller)
1444 */
1445 aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl));
1446
1447 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1))));
1448 /* Unknown revision */
1449 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1));
1450 aml_append(if_ctx, if_ctx2);
1451
1452 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl)));
1453 /* Capabilities bits were masked */
1454 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1));
1455 aml_append(if_ctx, if_ctx2);
1456
1457 /* Update DWORD3 in the buffer */
1458 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3")));
1459 aml_append(method, if_ctx);
1460
1461 else_ctx = aml_else();
1462 /* Unrecognized UUID */
1463 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1));
1464 aml_append(method, else_ctx);
1465
1466 aml_append(method, aml_return(aml_arg(3)));
1467 return method;
1468 }
1469
1470 static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
1471 {
1472 Aml *scope = aml_scope("_SB.PCI0");
1473 Aml *dev = aml_device("SMB0");
1474
1475 aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
1476 build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
1477 aml_append(scope, dev);
1478 aml_append(table, scope);
1479 }
1480
1481 static void
1482 build_dsdt(GArray *table_data, BIOSLinker *linker,
1483 AcpiPmInfo *pm, AcpiMiscInfo *misc,
1484 Range *pci_hole, Range *pci_hole64, MachineState *machine)
1485 {
1486 CrsRangeEntry *entry;
1487 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs;
1488 CrsRangeSet crs_range_set;
1489 PCMachineState *pcms = PC_MACHINE(machine);
1490 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine);
1491 X86MachineState *x86ms = X86_MACHINE(machine);
1492 AcpiMcfgInfo mcfg;
1493 uint32_t nr_mem = machine->ram_slots;
1494 int root_bus_limit = 0xFF;
1495 PCIBus *bus = NULL;
1496 TPMIf *tpm = tpm_find();
1497 int i;
1498 VMBusBridge *vmbus_bridge = vmbus_bridge_find();
1499
1500 dsdt = init_aml_allocator();
1501
1502 /* Reserve space for header */
1503 acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
1504
1505 build_dbg_aml(dsdt);
1506 if (misc->is_piix4) {
1507 sb_scope = aml_scope("_SB");
1508 dev = aml_device("PCI0");
1509 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
1510 aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
1511 aml_append(dev, aml_name_decl("_UID", aml_int(0)));
1512 aml_append(sb_scope, dev);
1513 aml_append(dsdt, sb_scope);
1514
1515 build_hpet_aml(dsdt);
1516 build_piix4_isa_bridge(dsdt);
1517 build_isa_devices_aml(dsdt);
1518 if (pm->pcihp_bridge_en || pm->pcihp_root_en) {
1519 build_piix4_pci_hotplug(dsdt);
1520 }
1521 build_piix4_pci0_int(dsdt);
1522 } else {
1523 sb_scope = aml_scope("_SB");
1524 dev = aml_device("PCI0");
1525 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
1526 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
1527 aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
1528 aml_append(dev, aml_name_decl("_UID", aml_int(0)));
1529 aml_append(dev, build_q35_osc_method());
1530 aml_append(sb_scope, dev);
1531
1532 if (pm->smi_on_cpuhp) {
1533 /* reserve SMI block resources, IO ports 0xB2, 0xB3 */
1534 dev = aml_device("PCI0.SMI0");
1535 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
1536 aml_append(dev, aml_name_decl("_UID", aml_string("SMI resources")));
1537 crs = aml_resource_template();
1538 aml_append(crs,
1539 aml_io(
1540 AML_DECODE16,
1541 ACPI_PORT_SMI_CMD,
1542 ACPI_PORT_SMI_CMD,
1543 1,
1544 2)
1545 );
1546 aml_append(dev, aml_name_decl("_CRS", crs));
1547 aml_append(dev, aml_operation_region("SMIR", AML_SYSTEM_IO,
1548 aml_int(ACPI_PORT_SMI_CMD), 2));
1549 field = aml_field("SMIR", AML_BYTE_ACC, AML_NOLOCK,
1550 AML_WRITE_AS_ZEROS);
1551 aml_append(field, aml_named_field("SMIC", 8));
1552 aml_append(field, aml_reserved_field(8));
1553 aml_append(dev, field);
1554 aml_append(sb_scope, dev);
1555 }
1556
1557 aml_append(dsdt, sb_scope);
1558
1559 build_hpet_aml(dsdt);
1560 build_q35_isa_bridge(dsdt);
1561 build_isa_devices_aml(dsdt);
1562 build_q35_pci0_int(dsdt);
1563 if (pcms->smbus && !pcmc->do_not_add_smb_acpi) {
1564 build_smb0(dsdt, pcms->smbus, ICH9_SMB_DEV, ICH9_SMB_FUNC);
1565 }
1566 }
1567
1568 if (vmbus_bridge) {
1569 sb_scope = aml_scope("_SB");
1570 aml_append(sb_scope, build_vmbus_device_aml(vmbus_bridge));
1571 aml_append(dsdt, sb_scope);
1572 }
1573
1574 if (pcmc->legacy_cpu_hotplug) {
1575 build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base);
1576 } else {
1577 CPUHotplugFeatures opts = {
1578 .acpi_1_compatible = true, .has_legacy_cphp = true,
1579 .smi_path = pm->smi_on_cpuhp ? "\\_SB.PCI0.SMI0.SMIC" : NULL,
1580 };
1581 build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base,
1582 "\\_SB.PCI0", "\\_GPE._E02");
1583 }
1584
1585 if (pcms->memhp_io_base && nr_mem) {
1586 build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0",
1587 "\\_GPE._E03", AML_SYSTEM_IO,
1588 pcms->memhp_io_base);
1589 }
1590
1591 scope = aml_scope("_GPE");
1592 {
1593 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006")));
1594
1595 if (misc->is_piix4 && (pm->pcihp_bridge_en || pm->pcihp_root_en)) {
1596 method = aml_method("_E01", 0, AML_NOTSERIALIZED);
1597 aml_append(method,
1598 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF));
1599 aml_append(method, aml_call0("\\_SB.PCI0.PCNT"));
1600 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK")));
1601 aml_append(scope, method);
1602 }
1603
1604 if (machine->nvdimms_state->is_enabled) {
1605 method = aml_method("_E04", 0, AML_NOTSERIALIZED);
1606 aml_append(method, aml_notify(aml_name("\\_SB.NVDR"),
1607 aml_int(0x80)));
1608 aml_append(scope, method);
1609 }
1610 }
1611 aml_append(dsdt, scope);
1612
1613 crs_range_set_init(&crs_range_set);
1614 bus = PC_MACHINE(machine)->bus;
1615 if (bus) {
1616 QLIST_FOREACH(bus, &bus->child, sibling) {
1617 uint8_t bus_num = pci_bus_num(bus);
1618 uint8_t numa_node = pci_bus_numa_node(bus);
1619
1620 /* look only for expander root buses */
1621 if (!pci_bus_is_root(bus)) {
1622 continue;
1623 }
1624
1625 if (bus_num < root_bus_limit) {
1626 root_bus_limit = bus_num - 1;
1627 }
1628
1629 scope = aml_scope("\\_SB");
1630 dev = aml_device("PC%.02X", bus_num);
1631 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
1632 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
1633 if (pci_bus_is_express(bus)) {
1634 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
1635 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
1636 aml_append(dev, build_q35_osc_method());
1637 } else {
1638 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
1639 }
1640
1641 if (numa_node != NUMA_NODE_UNASSIGNED) {
1642 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node)));
1643 }
1644
1645 aml_append(dev, build_prt(false));
1646 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set);
1647 aml_append(dev, aml_name_decl("_CRS", crs));
1648 aml_append(scope, dev);
1649 aml_append(dsdt, scope);
1650 }
1651 }
1652
1653 /*
1654 * At this point crs_range_set has all the ranges used by pci
1655 * busses *other* than PCI0. These ranges will be excluded from
1656 * the PCI0._CRS. Add mmconfig to the set so it will be excluded
1657 * too.
1658 */
1659 if (acpi_get_mcfg(&mcfg)) {
1660 crs_range_insert(crs_range_set.mem_ranges,
1661 mcfg.base, mcfg.base + mcfg.size - 1);
1662 }
1663
1664 scope = aml_scope("\\_SB.PCI0");
1665 /* build PCI0._CRS */
1666 crs = aml_resource_template();
1667 aml_append(crs,
1668 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
1669 0x0000, 0x0, root_bus_limit,
1670 0x0000, root_bus_limit + 1));
1671 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08));
1672
1673 aml_append(crs,
1674 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
1675 AML_POS_DECODE, AML_ENTIRE_RANGE,
1676 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
1677
1678 crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF);
1679 for (i = 0; i < crs_range_set.io_ranges->len; i++) {
1680 entry = g_ptr_array_index(crs_range_set.io_ranges, i);
1681 aml_append(crs,
1682 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
1683 AML_POS_DECODE, AML_ENTIRE_RANGE,
1684 0x0000, entry->base, entry->limit,
1685 0x0000, entry->limit - entry->base + 1));
1686 }
1687
1688 aml_append(crs,
1689 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
1690 AML_CACHEABLE, AML_READ_WRITE,
1691 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
1692
1693 crs_replace_with_free_ranges(crs_range_set.mem_ranges,
1694 range_lob(pci_hole),
1695 range_upb(pci_hole));
1696 for (i = 0; i < crs_range_set.mem_ranges->len; i++) {
1697 entry = g_ptr_array_index(crs_range_set.mem_ranges, i);
1698 aml_append(crs,
1699 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
1700 AML_NON_CACHEABLE, AML_READ_WRITE,
1701 0, entry->base, entry->limit,
1702 0, entry->limit - entry->base + 1));
1703 }
1704
1705 if (!range_is_empty(pci_hole64)) {
1706 crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges,
1707 range_lob(pci_hole64),
1708 range_upb(pci_hole64));
1709 for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) {
1710 entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i);
1711 aml_append(crs,
1712 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
1713 AML_MAX_FIXED,
1714 AML_CACHEABLE, AML_READ_WRITE,
1715 0, entry->base, entry->limit,
1716 0, entry->limit - entry->base + 1));
1717 }
1718 }
1719
1720 if (TPM_IS_TIS_ISA(tpm_find())) {
1721 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
1722 TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
1723 }
1724 aml_append(scope, aml_name_decl("_CRS", crs));
1725
1726 /* reserve GPE0 block resources */
1727 dev = aml_device("GPE0");
1728 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
1729 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources")));
1730 /* device present, functioning, decoding, not shown in UI */
1731 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
1732 crs = aml_resource_template();
1733 aml_append(crs,
1734 aml_io(
1735 AML_DECODE16,
1736 pm->fadt.gpe0_blk.address,
1737 pm->fadt.gpe0_blk.address,
1738 1,
1739 pm->fadt.gpe0_blk.bit_width / 8)
1740 );
1741 aml_append(dev, aml_name_decl("_CRS", crs));
1742 aml_append(scope, dev);
1743
1744 crs_range_set_free(&crs_range_set);
1745
1746 /* reserve PCIHP resources */
1747 if (pm->pcihp_io_len && (pm->pcihp_bridge_en || pm->pcihp_root_en)) {
1748 dev = aml_device("PHPR");
1749 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
1750 aml_append(dev,
1751 aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
1752 /* device present, functioning, decoding, not shown in UI */
1753 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
1754 crs = aml_resource_template();
1755 aml_append(crs,
1756 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1,
1757 pm->pcihp_io_len)
1758 );
1759 aml_append(dev, aml_name_decl("_CRS", crs));
1760 aml_append(scope, dev);
1761 }
1762 aml_append(dsdt, scope);
1763
1764 /* create S3_ / S4_ / S5_ packages if necessary */
1765 scope = aml_scope("\\");
1766 if (!pm->s3_disabled) {
1767 pkg = aml_package(4);
1768 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */
1769 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
1770 aml_append(pkg, aml_int(0)); /* reserved */
1771 aml_append(pkg, aml_int(0)); /* reserved */
1772 aml_append(scope, aml_name_decl("_S3", pkg));
1773 }
1774
1775 if (!pm->s4_disabled) {
1776 pkg = aml_package(4);
1777 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */
1778 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
1779 aml_append(pkg, aml_int(pm->s4_val));
1780 aml_append(pkg, aml_int(0)); /* reserved */
1781 aml_append(pkg, aml_int(0)); /* reserved */
1782 aml_append(scope, aml_name_decl("_S4", pkg));
1783 }
1784
1785 pkg = aml_package(4);
1786 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */
1787 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
1788 aml_append(pkg, aml_int(0)); /* reserved */
1789 aml_append(pkg, aml_int(0)); /* reserved */
1790 aml_append(scope, aml_name_decl("_S5", pkg));
1791 aml_append(dsdt, scope);
1792
1793 /* create fw_cfg node, unconditionally */
1794 {
1795 scope = aml_scope("\\_SB.PCI0");
1796 fw_cfg_add_acpi_dsdt(scope, x86ms->fw_cfg);
1797 aml_append(dsdt, scope);
1798 }
1799
1800 if (misc->applesmc_io_base) {
1801 scope = aml_scope("\\_SB.PCI0.ISA");
1802 dev = aml_device("SMC");
1803
1804 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
1805 /* device present, functioning, decoding, not shown in UI */
1806 aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
1807
1808 crs = aml_resource_template();
1809 aml_append(crs,
1810 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base,
1811 0x01, APPLESMC_MAX_DATA_LENGTH)
1812 );
1813 aml_append(crs, aml_irq_no_flags(6));
1814 aml_append(dev, aml_name_decl("_CRS", crs));
1815
1816 aml_append(scope, dev);
1817 aml_append(dsdt, scope);
1818 }
1819
1820 if (misc->pvpanic_port) {
1821 scope = aml_scope("\\_SB.PCI0.ISA");
1822
1823 dev = aml_device("PEVT");
1824 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
1825
1826 crs = aml_resource_template();
1827 aml_append(crs,
1828 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1)
1829 );
1830 aml_append(dev, aml_name_decl("_CRS", crs));
1831
1832 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO,
1833 aml_int(misc->pvpanic_port), 1));
1834 field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
1835 aml_append(field, aml_named_field("PEPT", 8));
1836 aml_append(dev, field);
1837
1838 /* device present, functioning, decoding, shown in UI */
1839 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
1840
1841 method = aml_method("RDPT", 0, AML_NOTSERIALIZED);
1842 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0)));
1843 aml_append(method, aml_return(aml_local(0)));
1844 aml_append(dev, method);
1845
1846 method = aml_method("WRPT", 1, AML_NOTSERIALIZED);
1847 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT")));
1848 aml_append(dev, method);
1849
1850 aml_append(scope, dev);
1851 aml_append(dsdt, scope);
1852 }
1853
1854 sb_scope = aml_scope("\\_SB");
1855 {
1856 Object *pci_host;
1857 PCIBus *bus = NULL;
1858
1859 pci_host = acpi_get_i386_pci_host();
1860 if (pci_host) {
1861 bus = PCI_HOST_BRIDGE(pci_host)->bus;
1862 }
1863
1864 if (bus) {
1865 Aml *scope = aml_scope("PCI0");
1866 /* Scan all PCI buses. Generate tables to support hotplug. */
1867 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
1868
1869 if (TPM_IS_TIS_ISA(tpm)) {
1870 if (misc->tpm_version == TPM_VERSION_2_0) {
1871 dev = aml_device("TPM");
1872 aml_append(dev, aml_name_decl("_HID",
1873 aml_string("MSFT0101")));
1874 } else {
1875 dev = aml_device("ISA.TPM");
1876 aml_append(dev, aml_name_decl("_HID",
1877 aml_eisaid("PNP0C31")));
1878 }
1879
1880 aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
1881 crs = aml_resource_template();
1882 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
1883 TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
1884 /*
1885 FIXME: TPM_TIS_IRQ=5 conflicts with PNP0C0F irqs,
1886 Rewrite to take IRQ from TPM device model and
1887 fix default IRQ value there to use some unused IRQ
1888 */
1889 /* aml_append(crs, aml_irq_no_flags(TPM_TIS_IRQ)); */
1890 aml_append(dev, aml_name_decl("_CRS", crs));
1891
1892 tpm_build_ppi_acpi(tpm, dev);
1893
1894 aml_append(scope, dev);
1895 }
1896
1897 aml_append(sb_scope, scope);
1898 }
1899 }
1900
1901 if (TPM_IS_CRB(tpm)) {
1902 dev = aml_device("TPM");
1903 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
1904 crs = aml_resource_template();
1905 aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE,
1906 TPM_CRB_ADDR_SIZE, AML_READ_WRITE));
1907 aml_append(dev, aml_name_decl("_CRS", crs));
1908
1909 aml_append(dev, aml_name_decl("_STA", aml_int(0xf)));
1910
1911 tpm_build_ppi_acpi(tpm, dev);
1912
1913 aml_append(sb_scope, dev);
1914 }
1915
1916 aml_append(dsdt, sb_scope);
1917
1918 /* copy AML table into ACPI tables blob and patch header there */
1919 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
1920 build_header(linker, table_data,
1921 (void *)(table_data->data + table_data->len - dsdt->buf->len),
1922 "DSDT", dsdt->buf->len, 1, NULL, NULL);
1923 free_aml_allocator();
1924 }
1925
1926 static void
1927 build_hpet(GArray *table_data, BIOSLinker *linker)
1928 {
1929 Acpi20Hpet *hpet;
1930
1931 hpet = acpi_data_push(table_data, sizeof(*hpet));
1932 /* Note timer_block_id value must be kept in sync with value advertised by
1933 * emulated hpet
1934 */
1935 hpet->timer_block_id = cpu_to_le32(0x8086a201);
1936 hpet->addr.address = cpu_to_le64(HPET_BASE);
1937 build_header(linker, table_data,
1938 (void *)hpet, "HPET", sizeof(*hpet), 1, NULL, NULL);
1939 }
1940
1941 static void
1942 build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
1943 {
1944 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
1945 unsigned log_addr_size = sizeof(tcpa->log_area_start_address);
1946 unsigned log_addr_offset =
1947 (char *)&tcpa->log_area_start_address - table_data->data;
1948
1949 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
1950 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
1951 acpi_data_push(tcpalog, le32_to_cpu(tcpa->log_area_minimum_length));
1952
1953 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1,
1954 false /* high memory */);
1955
1956 /* log area start address to be filled by Guest linker */
1957 bios_linker_loader_add_pointer(linker,
1958 ACPI_BUILD_TABLE_FILE, log_addr_offset, log_addr_size,
1959 ACPI_BUILD_TPMLOG_FILE, 0);
1960
1961 build_header(linker, table_data,
1962 (void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL);
1963 }
1964
1965 #define HOLE_640K_START (640 * KiB)
1966 #define HOLE_640K_END (1 * MiB)
1967
1968 static void
1969 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
1970 {
1971 AcpiSystemResourceAffinityTable *srat;
1972 AcpiSratMemoryAffinity *numamem;
1973
1974 int i;
1975 int srat_start, numa_start, slots;
1976 uint64_t mem_len, mem_base, next_base;
1977 MachineClass *mc = MACHINE_GET_CLASS(machine);
1978 X86MachineState *x86ms = X86_MACHINE(machine);
1979 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
1980 PCMachineState *pcms = PC_MACHINE(machine);
1981 ram_addr_t hotplugabble_address_space_size =
1982 object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE,
1983 NULL);
1984
1985 srat_start = table_data->len;
1986
1987 srat = acpi_data_push(table_data, sizeof *srat);
1988 srat->reserved1 = cpu_to_le32(1);
1989
1990 for (i = 0; i < apic_ids->len; i++) {
1991 int node_id = apic_ids->cpus[i].props.node_id;
1992 uint32_t apic_id = apic_ids->cpus[i].arch_id;
1993
1994 if (apic_id < 255) {
1995 AcpiSratProcessorAffinity *core;
1996
1997 core = acpi_data_push(table_data, sizeof *core);
1998 core->type = ACPI_SRAT_PROCESSOR_APIC;
1999 core->length = sizeof(*core);
2000 core->local_apic_id = apic_id;
2001 core->proximity_lo = node_id;
2002 memset(core->proximity_hi, 0, 3);
2003 core->local_sapic_eid = 0;
2004 core->flags = cpu_to_le32(1);
2005 } else {
2006 AcpiSratProcessorX2ApicAffinity *core;
2007
2008 core = acpi_data_push(table_data, sizeof *core);
2009 core->type = ACPI_SRAT_PROCESSOR_x2APIC;
2010 core->length = sizeof(*core);
2011 core->x2apic_id = cpu_to_le32(apic_id);
2012 core->proximity_domain = cpu_to_le32(node_id);
2013 core->flags = cpu_to_le32(1);
2014 }
2015 }
2016
2017
2018 /* the memory map is a bit tricky, it contains at least one hole
2019 * from 640k-1M and possibly another one from 3.5G-4G.
2020 */
2021 next_base = 0;
2022 numa_start = table_data->len;
2023
2024 for (i = 1; i < pcms->numa_nodes + 1; ++i) {
2025 mem_base = next_base;
2026 mem_len = pcms->node_mem[i - 1];
2027 next_base = mem_base + mem_len;
2028
2029 /* Cut out the 640K hole */
2030 if (mem_base <= HOLE_640K_START &&
2031 next_base > HOLE_640K_START) {
2032 mem_len -= next_base - HOLE_640K_START;
2033 if (mem_len > 0) {
2034 numamem = acpi_data_push(table_data, sizeof *numamem);
2035 build_srat_memory(numamem, mem_base, mem_len, i - 1,
2036 MEM_AFFINITY_ENABLED);
2037 }
2038
2039 /* Check for the rare case: 640K < RAM < 1M */
2040 if (next_base <= HOLE_640K_END) {
2041 next_base = HOLE_640K_END;
2042 continue;
2043 }
2044 mem_base = HOLE_640K_END;
2045 mem_len = next_base - HOLE_640K_END;
2046 }
2047
2048 /* Cut out the ACPI_PCI hole */
2049 if (mem_base <= x86ms->below_4g_mem_size &&
2050 next_base > x86ms->below_4g_mem_size) {
2051 mem_len -= next_base - x86ms->below_4g_mem_size;
2052 if (mem_len > 0) {
2053 numamem = acpi_data_push(table_data, sizeof *numamem);
2054 build_srat_memory(numamem, mem_base, mem_len, i - 1,
2055 MEM_AFFINITY_ENABLED);
2056 }
2057 mem_base = 1ULL << 32;
2058 mem_len = next_base - x86ms->below_4g_mem_size;
2059 next_base = mem_base + mem_len;
2060 }
2061
2062 if (mem_len > 0) {
2063 numamem = acpi_data_push(table_data, sizeof *numamem);
2064 build_srat_memory(numamem, mem_base, mem_len, i - 1,
2065 MEM_AFFINITY_ENABLED);
2066 }
2067 }
2068
2069 if (machine->nvdimms_state->is_enabled) {
2070 nvdimm_build_srat(table_data);
2071 }
2072
2073 slots = (table_data->len - numa_start) / sizeof *numamem;
2074 for (; slots < pcms->numa_nodes + 2; slots++) {
2075 numamem = acpi_data_push(table_data, sizeof *numamem);
2076 build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
2077 }
2078
2079 /*
2080 * Entry is required for Windows to enable memory hotplug in OS
2081 * and for Linux to enable SWIOTLB when booted with less than
2082 * 4G of RAM. Windows works better if the entry sets proximity
2083 * to the highest NUMA node in the machine.
2084 * Memory devices may override proximity set by this entry,
2085 * providing _PXM method if necessary.
2086 */
2087 if (hotplugabble_address_space_size) {
2088 numamem = acpi_data_push(table_data, sizeof *numamem);
2089 build_srat_memory(numamem, machine->device_memory->base,
2090 hotplugabble_address_space_size, pcms->numa_nodes - 1,
2091 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
2092 }
2093
2094 build_header(linker, table_data,
2095 (void *)(table_data->data + srat_start),
2096 "SRAT",
2097 table_data->len - srat_start, 1, NULL, NULL);
2098 }
2099
2100 /*
2101 * VT-d spec 8.1 DMA Remapping Reporting Structure
2102 * (version Oct. 2014 or later)
2103 */
2104 static void
2105 build_dmar_q35(GArray *table_data, BIOSLinker *linker)
2106 {
2107 int dmar_start = table_data->len;
2108
2109 AcpiTableDmar *dmar;
2110 AcpiDmarHardwareUnit *drhd;
2111 AcpiDmarRootPortATS *atsr;
2112 uint8_t dmar_flags = 0;
2113 X86IOMMUState *iommu = x86_iommu_get_default();
2114 AcpiDmarDeviceScope *scope = NULL;
2115 /* Root complex IOAPIC use one path[0] only */
2116 size_t ioapic_scope_size = sizeof(*scope) + sizeof(scope->path[0]);
2117 IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu);
2118
2119 assert(iommu);
2120 if (x86_iommu_ir_supported(iommu)) {
2121 dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */
2122 }
2123
2124 dmar = acpi_data_push(table_data, sizeof(*dmar));
2125 dmar->host_address_width = intel_iommu->aw_bits - 1;
2126 dmar->flags = dmar_flags;
2127
2128 /* DMAR Remapping Hardware Unit Definition structure */
2129 drhd = acpi_data_push(table_data, sizeof(*drhd) + ioapic_scope_size);
2130 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
2131 drhd->length = cpu_to_le16(sizeof(*drhd) + ioapic_scope_size);
2132 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
2133 drhd->pci_segment = cpu_to_le16(0);
2134 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
2135
2136 /* Scope definition for the root-complex IOAPIC. See VT-d spec
2137 * 8.3.1 (version Oct. 2014 or later). */
2138 scope = &drhd->scope[0];
2139 scope->entry_type = 0x03; /* Type: 0x03 for IOAPIC */
2140 scope->length = ioapic_scope_size;
2141 scope->enumeration_id = ACPI_BUILD_IOAPIC_ID;
2142 scope->bus = Q35_PSEUDO_BUS_PLATFORM;
2143 scope->path[0].device = PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC);
2144 scope->path[0].function = PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC);
2145
2146 if (iommu->dt_supported) {
2147 atsr = acpi_data_push(table_data, sizeof(*atsr));
2148 atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR);
2149 atsr->length = cpu_to_le16(sizeof(*atsr));
2150 atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS;
2151 atsr->pci_segment = cpu_to_le16(0);
2152 }
2153
2154 build_header(linker, table_data, (void *)(table_data->data + dmar_start),
2155 "DMAR", table_data->len - dmar_start, 1, NULL, NULL);
2156 }
2157
2158 /*
2159 * Windows ACPI Emulated Devices Table
2160 * (Version 1.0 - April 6, 2009)
2161 * Spec: http://download.microsoft.com/download/7/E/7/7E7662CF-CBEA-470B-A97E-CE7CE0D98DC2/WAET.docx
2162 *
2163 * Helpful to speedup Windows guests and ignored by others.
2164 */
2165 static void
2166 build_waet(GArray *table_data, BIOSLinker *linker)
2167 {
2168 int waet_start = table_data->len;
2169
2170 /* WAET header */
2171 acpi_data_push(table_data, sizeof(AcpiTableHeader));
2172 /*
2173 * Set "ACPI PM timer good" flag.
2174 *
2175 * Tells Windows guests that our ACPI PM timer is reliable in the
2176 * sense that guest can read it only once to obtain a reliable value.
2177 * Which avoids costly VMExits caused by guest re-reading it unnecessarily.
2178 */
2179 build_append_int_noprefix(table_data, 1 << 1 /* ACPI PM timer good */, 4);
2180
2181 build_header(linker, table_data, (void *)(table_data->data + waet_start),
2182 "WAET", table_data->len - waet_start, 1, NULL, NULL);
2183 }
2184
2185 /*
2186 * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2
2187 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf
2188 */
2189 #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0))
2190
2191 /*
2192 * Insert IVHD entry for device and recurse, insert alias, or insert range as
2193 * necessary for the PCI topology.
2194 */
2195 static void
2196 insert_ivhd(PCIBus *bus, PCIDevice *dev, void *opaque)
2197 {
2198 GArray *table_data = opaque;
2199 uint32_t entry;
2200
2201 /* "Select" IVHD entry, type 0x2 */
2202 entry = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn) << 8 | 0x2;
2203 build_append_int_noprefix(table_data, entry, 4);
2204
2205 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
2206 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev));
2207 uint8_t sec = pci_bus_num(sec_bus);
2208 uint8_t sub = dev->config[PCI_SUBORDINATE_BUS];
2209
2210 if (pci_bus_is_express(sec_bus)) {
2211 /*
2212 * Walk the bus if there are subordinates, otherwise use a range
2213 * to cover an entire leaf bus. We could potentially also use a
2214 * range for traversed buses, but we'd need to take care not to
2215 * create both Select and Range entries covering the same device.
2216 * This is easier and potentially more compact.
2217 *
2218 * An example bare metal system seems to use Select entries for
2219 * root ports without a slot (ie. built-ins) and Range entries
2220 * when there is a slot. The same system also only hard-codes
2221 * the alias range for an onboard PCIe-to-PCI bridge, apparently
2222 * making no effort to support nested bridges. We attempt to
2223 * be more thorough here.
2224 */
2225 if (sec == sub) { /* leaf bus */
2226 /* "Start of Range" IVHD entry, type 0x3 */
2227 entry = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)) << 8 | 0x3;
2228 build_append_int_noprefix(table_data, entry, 4);
2229 /* "End of Range" IVHD entry, type 0x4 */
2230 entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4;
2231 build_append_int_noprefix(table_data, entry, 4);
2232 } else {
2233 pci_for_each_device(sec_bus, sec, insert_ivhd, table_data);
2234 }
2235 } else {
2236 /*
2237 * If the secondary bus is conventional, then we need to create an
2238 * Alias range for everything downstream. The range covers the
2239 * first devfn on the secondary bus to the last devfn on the
2240 * subordinate bus. The alias target depends on legacy versus
2241 * express bridges, just as in pci_device_iommu_address_space().
2242 * DeviceIDa vs DeviceIDb as per the AMD IOMMU spec.
2243 */
2244 uint16_t dev_id_a, dev_id_b;
2245
2246 dev_id_a = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0));
2247
2248 if (pci_is_express(dev) &&
2249 pcie_cap_get_type(dev) == PCI_EXP_TYPE_PCI_BRIDGE) {
2250 dev_id_b = dev_id_a;
2251 } else {
2252 dev_id_b = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn);
2253 }
2254
2255 /* "Alias Start of Range" IVHD entry, type 0x43, 8 bytes */
2256 build_append_int_noprefix(table_data, dev_id_a << 8 | 0x43, 4);
2257 build_append_int_noprefix(table_data, dev_id_b << 8 | 0x0, 4);
2258
2259 /* "End of Range" IVHD entry, type 0x4 */
2260 entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4;
2261 build_append_int_noprefix(table_data, entry, 4);
2262 }
2263 }
2264 }
2265
2266 /* For all PCI host bridges, walk and insert IVHD entries */
2267 static int
2268 ivrs_host_bridges(Object *obj, void *opaque)
2269 {
2270 GArray *ivhd_blob = opaque;
2271
2272 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) {
2273 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus;
2274
2275 if (bus) {
2276 pci_for_each_device(bus, pci_bus_num(bus), insert_ivhd, ivhd_blob);
2277 }
2278 }
2279
2280 return 0;
2281 }
2282
2283 static void
2284 build_amd_iommu(GArray *table_data, BIOSLinker *linker)
2285 {
2286 int ivhd_table_len = 24;
2287 int iommu_start = table_data->len;
2288 AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default());
2289 GArray *ivhd_blob = g_array_new(false, true, 1);
2290
2291 /* IVRS header */
2292 acpi_data_push(table_data, sizeof(AcpiTableHeader));
2293 /* IVinfo - IO virtualization information common to all
2294 * IOMMU units in a system
2295 */
2296 build_append_int_noprefix(table_data, 40UL << 8/* PASize */, 4);
2297 /* reserved */
2298 build_append_int_noprefix(table_data, 0, 8);
2299
2300 /* IVHD definition - type 10h */
2301 build_append_int_noprefix(table_data, 0x10, 1);
2302 /* virtualization flags */
2303 build_append_int_noprefix(table_data,
2304 (1UL << 0) | /* HtTunEn */
2305 (1UL << 4) | /* iotblSup */
2306 (1UL << 6) | /* PrefSup */
2307 (1UL << 7), /* PPRSup */
2308 1);
2309
2310 /*
2311 * A PCI bus walk, for each PCI host bridge, is necessary to create a
2312 * complete set of IVHD entries. Do this into a separate blob so that we
2313 * can calculate the total IVRS table length here and then append the new
2314 * blob further below. Fall back to an entry covering all devices, which
2315 * is sufficient when no aliases are present.
2316 */
2317 object_child_foreach_recursive(object_get_root(),
2318 ivrs_host_bridges, ivhd_blob);
2319
2320 if (!ivhd_blob->len) {
2321 /*
2322 * Type 1 device entry reporting all devices
2323 * These are 4-byte device entries currently reporting the range of
2324 * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte)
2325 */
2326 build_append_int_noprefix(ivhd_blob, 0x0000001, 4);
2327 }
2328
2329 ivhd_table_len += ivhd_blob->len;
2330
2331 /*
2332 * When interrupt remapping is supported, we add a special IVHD device
2333 * for type IO-APIC.
2334 */
2335 if (x86_iommu_ir_supported(x86_iommu_get_default())) {
2336 ivhd_table_len += 8;
2337 }
2338
2339 /* IVHD length */
2340 build_append_int_noprefix(table_data, ivhd_table_len, 2);
2341 /* DeviceID */
2342 build_append_int_noprefix(table_data, s->devid, 2);
2343 /* Capability offset */
2344 build_append_int_noprefix(table_data, s->capab_offset, 2);
2345 /* IOMMU base address */
2346 build_append_int_noprefix(table_data, s->mmio.addr, 8);
2347 /* PCI Segment Group */
2348 build_append_int_noprefix(table_data, 0, 2);
2349 /* IOMMU info */
2350 build_append_int_noprefix(table_data, 0, 2);
2351 /* IOMMU Feature Reporting */
2352 build_append_int_noprefix(table_data,
2353 (48UL << 30) | /* HATS */
2354 (48UL << 28) | /* GATS */
2355 (1UL << 2) | /* GTSup */
2356 (1UL << 6), /* GASup */
2357 4);
2358
2359 /* IVHD entries as found above */
2360 g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len);
2361 g_array_free(ivhd_blob, TRUE);
2362
2363 /*
2364 * Add a special IVHD device type.
2365 * Refer to spec - Table 95: IVHD device entry type codes
2366 *
2367 * Linux IOMMU driver checks for the special IVHD device (type IO-APIC).
2368 * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059'
2369 */
2370 if (x86_iommu_ir_supported(x86_iommu_get_default())) {
2371 build_append_int_noprefix(table_data,
2372 (0x1ull << 56) | /* type IOAPIC */
2373 (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */
2374 0x48, /* special device */
2375 8);
2376 }
2377
2378 build_header(linker, table_data, (void *)(table_data->data + iommu_start),
2379 "IVRS", table_data->len - iommu_start, 1, NULL, NULL);
2380 }
2381
2382 typedef
2383 struct AcpiBuildState {
2384 /* Copy of table in RAM (for patching). */
2385 MemoryRegion *table_mr;
2386 /* Is table patched? */
2387 uint8_t patched;
2388 void *rsdp;
2389 MemoryRegion *rsdp_mr;
2390 MemoryRegion *linker_mr;
2391 } AcpiBuildState;
2392
2393 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
2394 {
2395 Object *pci_host;
2396 QObject *o;
2397
2398 pci_host = acpi_get_i386_pci_host();
2399 g_assert(pci_host);
2400
2401 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
2402 if (!o) {
2403 return false;
2404 }
2405 mcfg->base = qnum_get_uint(qobject_to(QNum, o));
2406 qobject_unref(o);
2407 if (mcfg->base == PCIE_BASE_ADDR_UNMAPPED) {
2408 return false;
2409 }
2410
2411 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
2412 assert(o);
2413 mcfg->size = qnum_get_uint(qobject_to(QNum, o));
2414 qobject_unref(o);
2415 return true;
2416 }
2417
2418 static
2419 void acpi_build(AcpiBuildTables *tables, MachineState *machine)
2420 {
2421 PCMachineState *pcms = PC_MACHINE(machine);
2422 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
2423 X86MachineState *x86ms = X86_MACHINE(machine);
2424 GArray *table_offsets;
2425 unsigned facs, dsdt, rsdt, fadt;
2426 AcpiPmInfo pm;
2427 AcpiMiscInfo misc;
2428 AcpiMcfgInfo mcfg;
2429 Range pci_hole, pci_hole64;
2430 uint8_t *u;
2431 size_t aml_len = 0;
2432 GArray *tables_blob = tables->table_data;
2433 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL };
2434 Object *vmgenid_dev;
2435
2436 acpi_get_pm_info(machine, &pm);
2437 acpi_get_misc_info(&misc);
2438 acpi_get_pci_holes(&pci_hole, &pci_hole64);
2439 acpi_get_slic_oem(&slic_oem);
2440
2441 table_offsets = g_array_new(false, true /* clear */,
2442 sizeof(uint32_t));
2443 ACPI_BUILD_DPRINTF("init ACPI tables\n");
2444
2445 bios_linker_loader_alloc(tables->linker,
2446 ACPI_BUILD_TABLE_FILE, tables_blob,
2447 64 /* Ensure FACS is aligned */,
2448 false /* high memory */);
2449
2450 /*
2451 * FACS is pointed to by FADT.
2452 * We place it first since it's the only table that has alignment
2453 * requirements.
2454 */
2455 facs = tables_blob->len;
2456 build_facs(tables_blob);
2457
2458 /* DSDT is pointed to by FADT */
2459 dsdt = tables_blob->len;
2460 build_dsdt(tables_blob, tables->linker, &pm, &misc,
2461 &pci_hole, &pci_hole64, machine);
2462
2463 /* Count the size of the DSDT and SSDT, we will need it for legacy
2464 * sizing of ACPI tables.
2465 */
2466 aml_len += tables_blob->len - dsdt;
2467
2468 /* ACPI tables pointed to by RSDT */
2469 fadt = tables_blob->len;
2470 acpi_add_table(table_offsets, tables_blob);
2471 pm.fadt.facs_tbl_offset = &facs;
2472 pm.fadt.dsdt_tbl_offset = &dsdt;
2473 pm.fadt.xdsdt_tbl_offset = &dsdt;
2474 build_fadt(tables_blob, tables->linker, &pm.fadt,
2475 slic_oem.id, slic_oem.table_id);
2476 aml_len += tables_blob->len - fadt;
2477
2478 acpi_add_table(table_offsets, tables_blob);
2479 acpi_build_madt(tables_blob, tables->linker, x86ms,
2480 ACPI_DEVICE_IF(x86ms->acpi_dev));
2481
2482 vmgenid_dev = find_vmgenid_dev();
2483 if (vmgenid_dev) {
2484 acpi_add_table(table_offsets, tables_blob);
2485 vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob,
2486 tables->vmgenid, tables->linker);
2487 }
2488
2489 if (misc.has_hpet) {
2490 acpi_add_table(table_offsets, tables_blob);
2491 build_hpet(tables_blob, tables->linker);
2492 }
2493 if (misc.tpm_version != TPM_VERSION_UNSPEC) {
2494 if (misc.tpm_version == TPM_VERSION_1_2) {
2495 acpi_add_table(table_offsets, tables_blob);
2496 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
2497 } else { /* TPM_VERSION_2_0 */
2498 acpi_add_table(table_offsets, tables_blob);
2499 build_tpm2(tables_blob, tables->linker, tables->tcpalog);
2500 }
2501 }
2502 if (pcms->numa_nodes) {
2503 acpi_add_table(table_offsets, tables_blob);
2504 build_srat(tables_blob, tables->linker, machine);
2505 if (machine->numa_state->have_numa_distance) {
2506 acpi_add_table(table_offsets, tables_blob);
2507 build_slit(tables_blob, tables->linker, machine);
2508 }
2509 if (machine->numa_state->hmat_enabled) {
2510 acpi_add_table(table_offsets, tables_blob);
2511 build_hmat(tables_blob, tables->linker, machine->numa_state);
2512 }
2513 }
2514 if (acpi_get_mcfg(&mcfg)) {
2515 acpi_add_table(table_offsets, tables_blob);
2516 build_mcfg(tables_blob, tables->linker, &mcfg);
2517 }
2518 if (x86_iommu_get_default()) {
2519 IommuType IOMMUType = x86_iommu_get_type();
2520 if (IOMMUType == TYPE_AMD) {
2521 acpi_add_table(table_offsets, tables_blob);
2522 build_amd_iommu(tables_blob, tables->linker);
2523 } else if (IOMMUType == TYPE_INTEL) {
2524 acpi_add_table(table_offsets, tables_blob);
2525 build_dmar_q35(tables_blob, tables->linker);
2526 }
2527 }
2528 if (machine->nvdimms_state->is_enabled) {
2529 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
2530 machine->nvdimms_state, machine->ram_slots);
2531 }
2532
2533 acpi_add_table(table_offsets, tables_blob);
2534 build_waet(tables_blob, tables->linker);
2535
2536 /* Add tables supplied by user (if any) */
2537 for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
2538 unsigned len = acpi_table_len(u);
2539
2540 acpi_add_table(table_offsets, tables_blob);
2541 g_array_append_vals(tables_blob, u, len);
2542 }
2543
2544 /* RSDT is pointed to by RSDP */
2545 rsdt = tables_blob->len;
2546 build_rsdt(tables_blob, tables->linker, table_offsets,
2547 slic_oem.id, slic_oem.table_id);
2548
2549 /* RSDP is in FSEG memory, so allocate it separately */
2550 {
2551 AcpiRsdpData rsdp_data = {
2552 .revision = 0,
2553 .oem_id = ACPI_BUILD_APPNAME6,
2554 .xsdt_tbl_offset = NULL,
2555 .rsdt_tbl_offset = &rsdt,
2556 };
2557 build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
2558 if (!pcmc->rsdp_in_ram) {
2559 /* We used to allocate some extra space for RSDP revision 2 but
2560 * only used the RSDP revision 0 space. The extra bytes were
2561 * zeroed out and not used.
2562 * Here we continue wasting those extra 16 bytes to make sure we
2563 * don't break migration for machine types 2.2 and older due to
2564 * RSDP blob size mismatch.
2565 */
2566 build_append_int_noprefix(tables->rsdp, 0, 16);
2567 }
2568 }
2569
2570 /* We'll expose it all to Guest so we want to reduce
2571 * chance of size changes.
2572 *
2573 * We used to align the tables to 4k, but of course this would
2574 * too simple to be enough. 4k turned out to be too small an
2575 * alignment very soon, and in fact it is almost impossible to
2576 * keep the table size stable for all (max_cpus, max_memory_slots)
2577 * combinations. So the table size is always 64k for pc-i440fx-2.1
2578 * and we give an error if the table grows beyond that limit.
2579 *
2580 * We still have the problem of migrating from "-M pc-i440fx-2.0". For
2581 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
2582 * than 2.0 and we can always pad the smaller tables with zeros. We can
2583 * then use the exact size of the 2.0 tables.
2584 *
2585 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
2586 */
2587 if (pcmc->legacy_acpi_table_size) {
2588 /* Subtracting aml_len gives the size of fixed tables. Then add the
2589 * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
2590 */
2591 int legacy_aml_len =
2592 pcmc->legacy_acpi_table_size +
2593 ACPI_BUILD_LEGACY_CPU_AML_SIZE * x86ms->apic_id_limit;
2594 int legacy_table_size =
2595 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
2596 ACPI_BUILD_ALIGN_SIZE);
2597 if (tables_blob->len > legacy_table_size) {
2598 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
2599 warn_report("ACPI table size %u exceeds %d bytes,"
2600 " migration may not work",
2601 tables_blob->len, legacy_table_size);
2602 error_printf("Try removing CPUs, NUMA nodes, memory slots"
2603 " or PCI bridges.");
2604 }
2605 g_array_set_size(tables_blob, legacy_table_size);
2606 } else {
2607 /* Make sure we have a buffer in case we need to resize the tables. */
2608 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
2609 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
2610 warn_report("ACPI table size %u exceeds %d bytes,"
2611 " migration may not work",
2612 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2);
2613 error_printf("Try removing CPUs, NUMA nodes, memory slots"
2614 " or PCI bridges.");
2615 }
2616 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
2617 }
2618
2619 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE);
2620
2621 /* Cleanup memory that's no longer used. */
2622 g_array_free(table_offsets, true);
2623 }
2624
2625 static void acpi_ram_update(MemoryRegion *mr, GArray *data)
2626 {
2627 uint32_t size = acpi_data_len(data);
2628
2629 /* Make sure RAM size is correct - in case it got changed e.g. by migration */
2630 memory_region_ram_resize(mr, size, &error_abort);
2631
2632 memcpy(memory_region_get_ram_ptr(mr), data->data, size);
2633 memory_region_set_dirty(mr, 0, size);
2634 }
2635
2636 static void acpi_build_update(void *build_opaque)
2637 {
2638 AcpiBuildState *build_state = build_opaque;
2639 AcpiBuildTables tables;
2640
2641 /* No state to update or already patched? Nothing to do. */
2642 if (!build_state || build_state->patched) {
2643 return;
2644 }
2645 build_state->patched = 1;
2646
2647 acpi_build_tables_init(&tables);
2648
2649 acpi_build(&tables, MACHINE(qdev_get_machine()));
2650
2651 acpi_ram_update(build_state->table_mr, tables.table_data);
2652
2653 if (build_state->rsdp) {
2654 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp));
2655 } else {
2656 acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
2657 }
2658
2659 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
2660 acpi_build_tables_cleanup(&tables, true);
2661 }
2662
2663 static void acpi_build_reset(void *build_opaque)
2664 {
2665 AcpiBuildState *build_state = build_opaque;
2666 build_state->patched = 0;
2667 }
2668
2669 static const VMStateDescription vmstate_acpi_build = {
2670 .name = "acpi_build",
2671 .version_id = 1,
2672 .minimum_version_id = 1,
2673 .fields = (VMStateField[]) {
2674 VMSTATE_UINT8(patched, AcpiBuildState),
2675 VMSTATE_END_OF_LIST()
2676 },
2677 };
2678
2679 void acpi_setup(void)
2680 {
2681 PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
2682 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
2683 X86MachineState *x86ms = X86_MACHINE(pcms);
2684 AcpiBuildTables tables;
2685 AcpiBuildState *build_state;
2686 Object *vmgenid_dev;
2687 TPMIf *tpm;
2688 static FwCfgTPMConfig tpm_config;
2689
2690 if (!x86ms->fw_cfg) {
2691 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
2692 return;
2693 }
2694
2695 if (!pcms->acpi_build_enabled) {
2696 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
2697 return;
2698 }
2699
2700 if (!x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
2701 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
2702 return;
2703 }
2704
2705 build_state = g_malloc0(sizeof *build_state);
2706
2707 acpi_build_tables_init(&tables);
2708 acpi_build(&tables, MACHINE(pcms));
2709
2710 /* Now expose it all to Guest */
2711 build_state->table_mr = acpi_add_rom_blob(acpi_build_update,
2712 build_state, tables.table_data,
2713 ACPI_BUILD_TABLE_FILE,
2714 ACPI_BUILD_TABLE_MAX_SIZE);
2715 assert(build_state->table_mr != NULL);
2716
2717 build_state->linker_mr =
2718 acpi_add_rom_blob(acpi_build_update, build_state,
2719 tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE, 0);
2720
2721 fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
2722 tables.tcpalog->data, acpi_data_len(tables.tcpalog));
2723
2724 tpm = tpm_find();
2725 if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) {
2726 tpm_config = (FwCfgTPMConfig) {
2727 .tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE),
2728 .tpm_version = tpm_get_version(tpm),
2729 .tpmppi_version = TPM_PPI_VERSION_1_30
2730 };
2731 fw_cfg_add_file(x86ms->fw_cfg, "etc/tpm/config",
2732 &tpm_config, sizeof tpm_config);
2733 }
2734
2735 vmgenid_dev = find_vmgenid_dev();
2736 if (vmgenid_dev) {
2737 vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), x86ms->fw_cfg,
2738 tables.vmgenid);
2739 }
2740
2741 if (!pcmc->rsdp_in_ram) {
2742 /*
2743 * Keep for compatibility with old machine types.
2744 * Though RSDP is small, its contents isn't immutable, so
2745 * we'll update it along with the rest of tables on guest access.
2746 */
2747 uint32_t rsdp_size = acpi_data_len(tables.rsdp);
2748
2749 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size);
2750 fw_cfg_add_file_callback(x86ms->fw_cfg, ACPI_BUILD_RSDP_FILE,
2751 acpi_build_update, NULL, build_state,
2752 build_state->rsdp, rsdp_size, true);
2753 build_state->rsdp_mr = NULL;
2754 } else {
2755 build_state->rsdp = NULL;
2756 build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update,
2757 build_state, tables.rsdp,
2758 ACPI_BUILD_RSDP_FILE, 0);
2759 }
2760
2761 qemu_register_reset(acpi_build_reset, build_state);
2762 acpi_build_reset(build_state);
2763 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state);
2764
2765 /* Cleanup tables but don't free the memory: we track it
2766 * in build_state.
2767 */
2768 acpi_build_tables_cleanup(&tables, false);
2769 }