1 /* Support for generating ACPI tables and passing them to Guests
3 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
4 * Copyright (C) 2006 Fabrice Bellard
5 * Copyright (C) 2013 Red Hat Inc
7 * Author: Michael S. Tsirkin <mst@redhat.com>
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.
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.
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/>.
23 #include "acpi-build.h"
26 #include "qemu-common.h"
27 #include "qemu/bitmap.h"
28 #include "qemu/osdep.h"
29 #include "qemu/range.h"
30 #include "qemu/error-report.h"
31 #include "hw/pci/pci.h"
33 #include "hw/i386/pc.h"
34 #include "target-i386/cpu.h"
35 #include "hw/timer/hpet.h"
36 #include "hw/i386/acpi-defs.h"
37 #include "hw/acpi/acpi.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/acpi/memory_hotplug.h"
43 #include "sysemu/tpm.h"
44 #include "hw/acpi/tpm.h"
46 /* Supported chipsets: */
47 #include "hw/acpi/piix4.h"
48 #include "hw/acpi/pcihp.h"
49 #include "hw/i386/ich9.h"
50 #include "hw/pci/pci_bus.h"
51 #include "hw/pci-host/q35.h"
52 #include "hw/i386/intel_iommu.h"
54 #include "hw/i386/q35-acpi-dsdt.hex"
55 #include "hw/i386/acpi-dsdt.hex"
57 #include "hw/acpi/aml-build.h"
59 #include "qapi/qmp/qint.h"
60 #include "qom/qom-qobject.h"
61 #include "exec/ram_addr.h"
63 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
64 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
65 * a little bit, there should be plenty of free space since the DSDT
66 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
68 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
69 #define ACPI_BUILD_ALIGN_SIZE 0x1000
71 #define ACPI_BUILD_TABLE_SIZE 0x20000
73 /* Reserve RAM space for tables: add another order of magnitude. */
74 #define ACPI_BUILD_TABLE_MAX_SIZE 0x200000
76 /* #define DEBUG_ACPI_BUILD */
77 #ifdef DEBUG_ACPI_BUILD
78 #define ACPI_BUILD_DPRINTF(fmt, ...) \
79 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
81 #define ACPI_BUILD_DPRINTF(fmt, ...)
84 typedef struct AcpiCpuInfo
{
85 DECLARE_BITMAP(found_cpus
, ACPI_CPU_HOTPLUG_ID_LIMIT
);
88 typedef struct AcpiMcfgInfo
{
93 typedef struct AcpiPmInfo
{
99 uint8_t acpi_enable_cmd
;
100 uint8_t acpi_disable_cmd
;
102 uint32_t gpe0_blk_len
;
104 uint16_t cpu_hp_io_base
;
105 uint16_t cpu_hp_io_len
;
106 uint16_t mem_hp_io_base
;
107 uint16_t mem_hp_io_len
;
108 uint16_t pcihp_io_base
;
109 uint16_t pcihp_io_len
;
112 typedef struct AcpiMiscInfo
{
115 DECLARE_BITMAP(slot_hotplug_enable
, PCI_SLOT_MAX
);
116 const unsigned char *dsdt_code
;
118 uint16_t pvpanic_port
;
121 typedef struct AcpiBuildPciBusHotplugState
{
122 GArray
*device_table
;
123 GArray
*notify_table
;
124 struct AcpiBuildPciBusHotplugState
*parent
;
125 bool pcihp_bridge_en
;
126 } AcpiBuildPciBusHotplugState
;
128 static void acpi_get_dsdt(AcpiMiscInfo
*info
)
130 uint16_t *applesmc_sta
;
131 Object
*piix
= piix4_pm_find();
132 Object
*lpc
= ich9_lpc_find();
133 assert(!!piix
!= !!lpc
);
136 info
->dsdt_code
= AcpiDsdtAmlCode
;
137 info
->dsdt_size
= sizeof AcpiDsdtAmlCode
;
138 applesmc_sta
= piix_dsdt_applesmc_sta
;
141 info
->dsdt_code
= Q35AcpiDsdtAmlCode
;
142 info
->dsdt_size
= sizeof Q35AcpiDsdtAmlCode
;
143 applesmc_sta
= q35_dsdt_applesmc_sta
;
146 /* Patch in appropriate value for AppleSMC _STA */
147 *(uint8_t *)(info
->dsdt_code
+ *applesmc_sta
) =
148 applesmc_port() ? 0x0b : 0x00;
152 int acpi_add_cpu_info(Object
*o
, void *opaque
)
154 AcpiCpuInfo
*cpu
= opaque
;
157 if (object_dynamic_cast(o
, TYPE_CPU
)) {
158 apic_id
= object_property_get_int(o
, "apic-id", NULL
);
159 assert(apic_id
< ACPI_CPU_HOTPLUG_ID_LIMIT
);
161 set_bit(apic_id
, cpu
->found_cpus
);
164 object_child_foreach(o
, acpi_add_cpu_info
, opaque
);
168 static void acpi_get_cpu_info(AcpiCpuInfo
*cpu
)
170 Object
*root
= object_get_root();
172 memset(cpu
->found_cpus
, 0, sizeof cpu
->found_cpus
);
173 object_child_foreach(root
, acpi_add_cpu_info
, cpu
);
176 static void acpi_get_pm_info(AcpiPmInfo
*pm
)
178 Object
*piix
= piix4_pm_find();
179 Object
*lpc
= ich9_lpc_find();
183 pm
->pcihp_io_base
= 0;
184 pm
->pcihp_io_len
= 0;
187 pm
->cpu_hp_io_base
= PIIX4_CPU_HOTPLUG_IO_BASE
;
189 object_property_get_int(obj
, ACPI_PCIHP_IO_BASE_PROP
, NULL
);
191 object_property_get_int(obj
, ACPI_PCIHP_IO_LEN_PROP
, NULL
);
195 pm
->cpu_hp_io_base
= ICH9_CPU_HOTPLUG_IO_BASE
;
199 pm
->cpu_hp_io_len
= ACPI_GPE_PROC_LEN
;
200 pm
->mem_hp_io_base
= ACPI_MEMORY_HOTPLUG_BASE
;
201 pm
->mem_hp_io_len
= ACPI_MEMORY_HOTPLUG_IO_LEN
;
203 /* Fill in optional s3/s4 related properties */
204 o
= object_property_get_qobject(obj
, ACPI_PM_PROP_S3_DISABLED
, NULL
);
206 pm
->s3_disabled
= qint_get_int(qobject_to_qint(o
));
208 pm
->s3_disabled
= false;
211 o
= object_property_get_qobject(obj
, ACPI_PM_PROP_S4_DISABLED
, NULL
);
213 pm
->s4_disabled
= qint_get_int(qobject_to_qint(o
));
215 pm
->s4_disabled
= false;
218 o
= object_property_get_qobject(obj
, ACPI_PM_PROP_S4_VAL
, NULL
);
220 pm
->s4_val
= qint_get_int(qobject_to_qint(o
));
226 /* Fill in mandatory properties */
227 pm
->sci_int
= object_property_get_int(obj
, ACPI_PM_PROP_SCI_INT
, NULL
);
229 pm
->acpi_enable_cmd
= object_property_get_int(obj
,
230 ACPI_PM_PROP_ACPI_ENABLE_CMD
,
232 pm
->acpi_disable_cmd
= object_property_get_int(obj
,
233 ACPI_PM_PROP_ACPI_DISABLE_CMD
,
235 pm
->io_base
= object_property_get_int(obj
, ACPI_PM_PROP_PM_IO_BASE
,
237 pm
->gpe0_blk
= object_property_get_int(obj
, ACPI_PM_PROP_GPE0_BLK
,
239 pm
->gpe0_blk_len
= object_property_get_int(obj
, ACPI_PM_PROP_GPE0_BLK_LEN
,
241 pm
->pcihp_bridge_en
=
242 object_property_get_bool(obj
, "acpi-pci-hotplug-with-bridge-support",
246 static void acpi_get_misc_info(AcpiMiscInfo
*info
)
248 info
->has_hpet
= hpet_find();
249 info
->has_tpm
= tpm_find();
250 info
->pvpanic_port
= pvpanic_port();
253 static void acpi_get_pci_info(PcPciInfo
*info
)
258 pci_host
= object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE
, &ambiguous
);
259 g_assert(!ambiguous
);
262 info
->w32
.begin
= object_property_get_int(pci_host
,
263 PCI_HOST_PROP_PCI_HOLE_START
,
265 info
->w32
.end
= object_property_get_int(pci_host
,
266 PCI_HOST_PROP_PCI_HOLE_END
,
268 info
->w64
.begin
= object_property_get_int(pci_host
,
269 PCI_HOST_PROP_PCI_HOLE64_START
,
271 info
->w64
.end
= object_property_get_int(pci_host
,
272 PCI_HOST_PROP_PCI_HOLE64_END
,
276 #define ACPI_BUILD_APPNAME "Bochs"
277 #define ACPI_BUILD_APPNAME6 "BOCHS "
278 #define ACPI_BUILD_APPNAME4 "BXPC"
280 #define ACPI_BUILD_TABLE_FILE "etc/acpi/tables"
281 #define ACPI_BUILD_RSDP_FILE "etc/acpi/rsdp"
282 #define ACPI_BUILD_TPMLOG_FILE "etc/tpm/log"
285 build_header(GArray
*linker
, GArray
*table_data
,
286 AcpiTableHeader
*h
, const char *sig
, int len
, uint8_t rev
)
288 memcpy(&h
->signature
, sig
, 4);
289 h
->length
= cpu_to_le32(len
);
291 memcpy(h
->oem_id
, ACPI_BUILD_APPNAME6
, 6);
292 memcpy(h
->oem_table_id
, ACPI_BUILD_APPNAME4
, 4);
293 memcpy(h
->oem_table_id
+ 4, sig
, 4);
294 h
->oem_revision
= cpu_to_le32(1);
295 memcpy(h
->asl_compiler_id
, ACPI_BUILD_APPNAME4
, 4);
296 h
->asl_compiler_revision
= cpu_to_le32(1);
298 /* Checksum to be filled in by Guest linker */
299 bios_linker_loader_add_checksum(linker
, ACPI_BUILD_TABLE_FILE
,
300 table_data
->data
, h
, len
, &h
->checksum
);
303 static GArray
*build_alloc_method(const char *name
, uint8_t arg_count
)
305 GArray
*method
= build_alloc_array();
307 build_append_namestring(method
, "%s", name
);
308 build_append_byte(method
, arg_count
); /* MethodFlags: ArgCount */
313 static void build_append_and_cleanup_method(GArray
*device
, GArray
*method
)
315 uint8_t op
= 0x14; /* MethodOp */
317 build_package(method
, op
);
319 build_append_array(device
, method
);
320 build_free_array(method
);
324 #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */
326 static inline void *acpi_data_push(GArray
*table_data
, unsigned size
)
328 unsigned off
= table_data
->len
;
329 g_array_set_size(table_data
, off
+ size
);
330 return table_data
->data
+ off
;
333 static unsigned acpi_data_len(GArray
*table
)
335 #if GLIB_CHECK_VERSION(2, 22, 0)
336 assert(g_array_get_element_size(table
) == 1);
341 static void acpi_align_size(GArray
*blob
, unsigned align
)
343 /* Align size to multiple of given size. This reduces the chance
344 * we need to change size in the future (breaking cross version migration).
346 g_array_set_size(blob
, ROUND_UP(acpi_data_len(blob
), align
));
349 static inline void acpi_add_table(GArray
*table_offsets
, GArray
*table_data
)
351 uint32_t offset
= cpu_to_le32(table_data
->len
);
352 g_array_append_val(table_offsets
, offset
);
357 build_facs(GArray
*table_data
, GArray
*linker
, PcGuestInfo
*guest_info
)
359 AcpiFacsDescriptorRev1
*facs
= acpi_data_push(table_data
, sizeof *facs
);
360 memcpy(&facs
->signature
, "FACS", 4);
361 facs
->length
= cpu_to_le32(sizeof(*facs
));
364 /* Load chipset information in FADT */
365 static void fadt_setup(AcpiFadtDescriptorRev1
*fadt
, AcpiPmInfo
*pm
)
369 fadt
->sci_int
= cpu_to_le16(pm
->sci_int
);
370 fadt
->smi_cmd
= cpu_to_le32(ACPI_PORT_SMI_CMD
);
371 fadt
->acpi_enable
= pm
->acpi_enable_cmd
;
372 fadt
->acpi_disable
= pm
->acpi_disable_cmd
;
373 /* EVT, CNT, TMR offset matches hw/acpi/core.c */
374 fadt
->pm1a_evt_blk
= cpu_to_le32(pm
->io_base
);
375 fadt
->pm1a_cnt_blk
= cpu_to_le32(pm
->io_base
+ 0x04);
376 fadt
->pm_tmr_blk
= cpu_to_le32(pm
->io_base
+ 0x08);
377 fadt
->gpe0_blk
= cpu_to_le32(pm
->gpe0_blk
);
378 /* EVT, CNT, TMR length matches hw/acpi/core.c */
379 fadt
->pm1_evt_len
= 4;
380 fadt
->pm1_cnt_len
= 2;
381 fadt
->pm_tmr_len
= 4;
382 fadt
->gpe0_blk_len
= pm
->gpe0_blk_len
;
383 fadt
->plvl2_lat
= cpu_to_le16(0xfff); /* C2 state not supported */
384 fadt
->plvl3_lat
= cpu_to_le16(0xfff); /* C3 state not supported */
385 fadt
->flags
= cpu_to_le32((1 << ACPI_FADT_F_WBINVD
) |
386 (1 << ACPI_FADT_F_PROC_C1
) |
387 (1 << ACPI_FADT_F_SLP_BUTTON
) |
388 (1 << ACPI_FADT_F_RTC_S4
));
389 fadt
->flags
|= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK
);
390 /* APIC destination mode ("Flat Logical") has an upper limit of 8 CPUs
391 * For more than 8 CPUs, "Clustered Logical" mode has to be used
394 fadt
->flags
|= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL
);
401 build_fadt(GArray
*table_data
, GArray
*linker
, AcpiPmInfo
*pm
,
402 unsigned facs
, unsigned dsdt
)
404 AcpiFadtDescriptorRev1
*fadt
= acpi_data_push(table_data
, sizeof(*fadt
));
406 fadt
->firmware_ctrl
= cpu_to_le32(facs
);
407 /* FACS address to be filled by Guest linker */
408 bios_linker_loader_add_pointer(linker
, ACPI_BUILD_TABLE_FILE
,
409 ACPI_BUILD_TABLE_FILE
,
410 table_data
, &fadt
->firmware_ctrl
,
411 sizeof fadt
->firmware_ctrl
);
413 fadt
->dsdt
= cpu_to_le32(dsdt
);
414 /* DSDT address to be filled by Guest linker */
415 bios_linker_loader_add_pointer(linker
, ACPI_BUILD_TABLE_FILE
,
416 ACPI_BUILD_TABLE_FILE
,
417 table_data
, &fadt
->dsdt
,
420 fadt_setup(fadt
, pm
);
422 build_header(linker
, table_data
,
423 (void *)fadt
, "FACP", sizeof(*fadt
), 1);
427 build_madt(GArray
*table_data
, GArray
*linker
, AcpiCpuInfo
*cpu
,
428 PcGuestInfo
*guest_info
)
430 int madt_start
= table_data
->len
;
432 AcpiMultipleApicTable
*madt
;
433 AcpiMadtIoApic
*io_apic
;
434 AcpiMadtIntsrcovr
*intsrcovr
;
435 AcpiMadtLocalNmi
*local_nmi
;
438 madt
= acpi_data_push(table_data
, sizeof *madt
);
439 madt
->local_apic_address
= cpu_to_le32(APIC_DEFAULT_ADDRESS
);
440 madt
->flags
= cpu_to_le32(1);
442 for (i
= 0; i
< guest_info
->apic_id_limit
; i
++) {
443 AcpiMadtProcessorApic
*apic
= acpi_data_push(table_data
, sizeof *apic
);
444 apic
->type
= ACPI_APIC_PROCESSOR
;
445 apic
->length
= sizeof(*apic
);
446 apic
->processor_id
= i
;
447 apic
->local_apic_id
= i
;
448 if (test_bit(i
, cpu
->found_cpus
)) {
449 apic
->flags
= cpu_to_le32(1);
451 apic
->flags
= cpu_to_le32(0);
454 io_apic
= acpi_data_push(table_data
, sizeof *io_apic
);
455 io_apic
->type
= ACPI_APIC_IO
;
456 io_apic
->length
= sizeof(*io_apic
);
457 #define ACPI_BUILD_IOAPIC_ID 0x0
458 io_apic
->io_apic_id
= ACPI_BUILD_IOAPIC_ID
;
459 io_apic
->address
= cpu_to_le32(IO_APIC_DEFAULT_ADDRESS
);
460 io_apic
->interrupt
= cpu_to_le32(0);
462 if (guest_info
->apic_xrupt_override
) {
463 intsrcovr
= acpi_data_push(table_data
, sizeof *intsrcovr
);
464 intsrcovr
->type
= ACPI_APIC_XRUPT_OVERRIDE
;
465 intsrcovr
->length
= sizeof(*intsrcovr
);
466 intsrcovr
->source
= 0;
467 intsrcovr
->gsi
= cpu_to_le32(2);
468 intsrcovr
->flags
= cpu_to_le16(0); /* conforms to bus specifications */
470 for (i
= 1; i
< 16; i
++) {
471 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
472 if (!(ACPI_BUILD_PCI_IRQS
& (1 << i
))) {
473 /* No need for a INT source override structure. */
476 intsrcovr
= acpi_data_push(table_data
, sizeof *intsrcovr
);
477 intsrcovr
->type
= ACPI_APIC_XRUPT_OVERRIDE
;
478 intsrcovr
->length
= sizeof(*intsrcovr
);
479 intsrcovr
->source
= i
;
480 intsrcovr
->gsi
= cpu_to_le32(i
);
481 intsrcovr
->flags
= cpu_to_le16(0xd); /* active high, level triggered */
484 local_nmi
= acpi_data_push(table_data
, sizeof *local_nmi
);
485 local_nmi
->type
= ACPI_APIC_LOCAL_NMI
;
486 local_nmi
->length
= sizeof(*local_nmi
);
487 local_nmi
->processor_id
= 0xff; /* all processors */
488 local_nmi
->flags
= cpu_to_le16(0);
489 local_nmi
->lint
= 1; /* ACPI_LINT1 */
491 build_header(linker
, table_data
,
492 (void *)(table_data
->data
+ madt_start
), "APIC",
493 table_data
->len
- madt_start
, 1);
496 /* Encode a hex value */
497 static inline char acpi_get_hex(uint32_t val
)
500 return (val
<= 9) ? ('0' + val
) : ('A' + val
- 10);
503 /* 0x5B 0x82 DeviceOp PkgLength NameString */
504 #define ACPI_PCIHP_OFFSET_HEX (*ssdt_pcihp_name - *ssdt_pcihp_start + 1)
505 #define ACPI_PCIHP_OFFSET_ID (*ssdt_pcihp_id - *ssdt_pcihp_start)
506 #define ACPI_PCIHP_OFFSET_ADR (*ssdt_pcihp_adr - *ssdt_pcihp_start)
507 #define ACPI_PCIHP_OFFSET_EJ0 (*ssdt_pcihp_ej0 - *ssdt_pcihp_start)
508 #define ACPI_PCIHP_SIZEOF (*ssdt_pcihp_end - *ssdt_pcihp_start)
509 #define ACPI_PCIHP_AML (ssdp_pcihp_aml + *ssdt_pcihp_start)
511 #define ACPI_PCINOHP_OFFSET_HEX (*ssdt_pcinohp_name - *ssdt_pcinohp_start + 1)
512 #define ACPI_PCINOHP_OFFSET_ADR (*ssdt_pcinohp_adr - *ssdt_pcinohp_start)
513 #define ACPI_PCINOHP_SIZEOF (*ssdt_pcinohp_end - *ssdt_pcinohp_start)
514 #define ACPI_PCINOHP_AML (ssdp_pcihp_aml + *ssdt_pcinohp_start)
516 #define ACPI_PCIVGA_OFFSET_HEX (*ssdt_pcivga_name - *ssdt_pcivga_start + 1)
517 #define ACPI_PCIVGA_OFFSET_ADR (*ssdt_pcivga_adr - *ssdt_pcivga_start)
518 #define ACPI_PCIVGA_SIZEOF (*ssdt_pcivga_end - *ssdt_pcivga_start)
519 #define ACPI_PCIVGA_AML (ssdp_pcihp_aml + *ssdt_pcivga_start)
521 #define ACPI_PCIQXL_OFFSET_HEX (*ssdt_pciqxl_name - *ssdt_pciqxl_start + 1)
522 #define ACPI_PCIQXL_OFFSET_ADR (*ssdt_pciqxl_adr - *ssdt_pciqxl_start)
523 #define ACPI_PCIQXL_SIZEOF (*ssdt_pciqxl_end - *ssdt_pciqxl_start)
524 #define ACPI_PCIQXL_AML (ssdp_pcihp_aml + *ssdt_pciqxl_start)
526 #define ACPI_SSDT_SIGNATURE 0x54445353 /* SSDT */
527 #define ACPI_SSDT_HEADER_LENGTH 36
529 #include "hw/i386/ssdt-pcihp.hex"
530 #include "hw/i386/ssdt-tpm.hex"
532 static void patch_pcihp(int slot
, uint8_t *ssdt_ptr
)
534 unsigned devfn
= PCI_DEVFN(slot
, 0);
536 ssdt_ptr
[ACPI_PCIHP_OFFSET_HEX
] = acpi_get_hex(devfn
>> 4);
537 ssdt_ptr
[ACPI_PCIHP_OFFSET_HEX
+ 1] = acpi_get_hex(devfn
);
538 ssdt_ptr
[ACPI_PCIHP_OFFSET_ID
] = slot
;
539 ssdt_ptr
[ACPI_PCIHP_OFFSET_ADR
+ 2] = slot
;
542 static void patch_pcinohp(int slot
, uint8_t *ssdt_ptr
)
544 unsigned devfn
= PCI_DEVFN(slot
, 0);
546 ssdt_ptr
[ACPI_PCINOHP_OFFSET_HEX
] = acpi_get_hex(devfn
>> 4);
547 ssdt_ptr
[ACPI_PCINOHP_OFFSET_HEX
+ 1] = acpi_get_hex(devfn
);
548 ssdt_ptr
[ACPI_PCINOHP_OFFSET_ADR
+ 2] = slot
;
551 static void patch_pcivga(int slot
, uint8_t *ssdt_ptr
)
553 unsigned devfn
= PCI_DEVFN(slot
, 0);
555 ssdt_ptr
[ACPI_PCIVGA_OFFSET_HEX
] = acpi_get_hex(devfn
>> 4);
556 ssdt_ptr
[ACPI_PCIVGA_OFFSET_HEX
+ 1] = acpi_get_hex(devfn
);
557 ssdt_ptr
[ACPI_PCIVGA_OFFSET_ADR
+ 2] = slot
;
560 static void patch_pciqxl(int slot
, uint8_t *ssdt_ptr
)
562 unsigned devfn
= PCI_DEVFN(slot
, 0);
564 ssdt_ptr
[ACPI_PCIQXL_OFFSET_HEX
] = acpi_get_hex(devfn
>> 4);
565 ssdt_ptr
[ACPI_PCIQXL_OFFSET_HEX
+ 1] = acpi_get_hex(devfn
);
566 ssdt_ptr
[ACPI_PCIQXL_OFFSET_ADR
+ 2] = slot
;
569 /* Assign BSEL property to all buses. In the future, this can be changed
570 * to only assign to buses that support hotplug.
572 static void *acpi_set_bsel(PCIBus
*bus
, void *opaque
)
574 unsigned *bsel_alloc
= opaque
;
577 if (qbus_is_hotpluggable(BUS(bus
))) {
578 bus_bsel
= g_malloc(sizeof *bus_bsel
);
580 *bus_bsel
= (*bsel_alloc
)++;
581 object_property_add_uint32_ptr(OBJECT(bus
), ACPI_PCIHP_PROP_BSEL
,
588 static void acpi_set_pci_info(void)
590 PCIBus
*bus
= find_i440fx(); /* TODO: Q35 support */
591 unsigned bsel_alloc
= 0;
594 /* Scan all PCI buses. Set property to enable acpi based hotplug. */
595 pci_for_each_bus_depth_first(bus
, acpi_set_bsel
, NULL
, &bsel_alloc
);
599 static void build_pci_bus_state_init(AcpiBuildPciBusHotplugState
*state
,
600 AcpiBuildPciBusHotplugState
*parent
,
601 bool pcihp_bridge_en
)
603 state
->parent
= parent
;
604 state
->device_table
= build_alloc_array();
605 state
->notify_table
= build_alloc_array();
606 state
->pcihp_bridge_en
= pcihp_bridge_en
;
609 static void build_pci_bus_state_cleanup(AcpiBuildPciBusHotplugState
*state
)
611 build_free_array(state
->device_table
);
612 build_free_array(state
->notify_table
);
615 static void *build_pci_bus_begin(PCIBus
*bus
, void *parent_state
)
617 AcpiBuildPciBusHotplugState
*parent
= parent_state
;
618 AcpiBuildPciBusHotplugState
*child
= g_malloc(sizeof *child
);
620 build_pci_bus_state_init(child
, parent
, parent
->pcihp_bridge_en
);
625 static void build_pci_bus_end(PCIBus
*bus
, void *bus_state
)
627 AcpiBuildPciBusHotplugState
*child
= bus_state
;
628 AcpiBuildPciBusHotplugState
*parent
= child
->parent
;
629 GArray
*bus_table
= build_alloc_array();
630 DECLARE_BITMAP(slot_hotplug_enable
, PCI_SLOT_MAX
);
631 DECLARE_BITMAP(slot_device_present
, PCI_SLOT_MAX
);
632 DECLARE_BITMAP(slot_device_system
, PCI_SLOT_MAX
);
633 DECLARE_BITMAP(slot_device_vga
, PCI_SLOT_MAX
);
634 DECLARE_BITMAP(slot_device_qxl
, PCI_SLOT_MAX
);
639 bool bus_hotplug_support
= false;
642 * Skip bridge subtree creation if bridge hotplug is disabled
643 * to make acpi tables compatible with legacy machine types.
644 * Skip creation for hotplugged bridges as well.
646 if (bus
->parent_dev
&& (!child
->pcihp_bridge_en
||
647 DEVICE(bus
->parent_dev
)->hotplugged
)) {
648 build_free_array(bus_table
);
649 build_pci_bus_state_cleanup(child
);
654 if (bus
->parent_dev
) {
655 op
= 0x82; /* DeviceOp */
656 build_append_namestring(bus_table
, "S%.02X",
657 bus
->parent_dev
->devfn
);
658 build_append_byte(bus_table
, 0x08); /* NameOp */
659 build_append_namestring(bus_table
, "_SUN");
660 build_append_int(bus_table
, PCI_SLOT(bus
->parent_dev
->devfn
));
661 build_append_byte(bus_table
, 0x08); /* NameOp */
662 build_append_namestring(bus_table
, "_ADR");
663 build_append_int(bus_table
, (PCI_SLOT(bus
->parent_dev
->devfn
) << 16) |
664 PCI_FUNC(bus
->parent_dev
->devfn
));
666 op
= 0x10; /* ScopeOp */;
667 build_append_namestring(bus_table
, "PCI0");
670 bsel
= object_property_get_qobject(OBJECT(bus
), ACPI_PCIHP_PROP_BSEL
, NULL
);
672 build_append_byte(bus_table
, 0x08); /* NameOp */
673 build_append_namestring(bus_table
, "BSEL");
674 build_append_int(bus_table
, qint_get_int(qobject_to_qint(bsel
)));
675 memset(slot_hotplug_enable
, 0xff, sizeof slot_hotplug_enable
);
677 /* No bsel - no slots are hot-pluggable */
678 memset(slot_hotplug_enable
, 0x00, sizeof slot_hotplug_enable
);
681 memset(slot_device_present
, 0x00, sizeof slot_device_present
);
682 memset(slot_device_system
, 0x00, sizeof slot_device_present
);
683 memset(slot_device_vga
, 0x00, sizeof slot_device_vga
);
684 memset(slot_device_qxl
, 0x00, sizeof slot_device_qxl
);
686 for (i
= 0; i
< ARRAY_SIZE(bus
->devices
); i
+= PCI_FUNC_MAX
) {
689 PCIDevice
*pdev
= bus
->devices
[i
];
690 int slot
= PCI_SLOT(i
);
697 set_bit(slot
, slot_device_present
);
698 pc
= PCI_DEVICE_GET_CLASS(pdev
);
699 dc
= DEVICE_GET_CLASS(pdev
);
701 /* When hotplug for bridges is enabled, bridges are
702 * described in ACPI separately (see build_pci_bus_end).
703 * In this case they aren't themselves hot-pluggable.
704 * Hotplugged bridges *are* hot-pluggable.
706 bridge_in_acpi
= pc
->is_bridge
&& child
->pcihp_bridge_en
&&
707 !DEVICE(pdev
)->hotplugged
;
709 if (pc
->class_id
== PCI_CLASS_BRIDGE_ISA
|| bridge_in_acpi
) {
710 set_bit(slot
, slot_device_system
);
713 if (pc
->class_id
== PCI_CLASS_DISPLAY_VGA
) {
714 set_bit(slot
, slot_device_vga
);
716 if (object_dynamic_cast(OBJECT(pdev
), "qxl-vga")) {
717 set_bit(slot
, slot_device_qxl
);
721 if (!dc
->hotpluggable
|| bridge_in_acpi
) {
722 clear_bit(slot
, slot_hotplug_enable
);
726 /* Append Device object for each slot */
727 for (i
= 0; i
< PCI_SLOT_MAX
; i
++) {
728 bool can_eject
= test_bit(i
, slot_hotplug_enable
);
729 bool present
= test_bit(i
, slot_device_present
);
730 bool vga
= test_bit(i
, slot_device_vga
);
731 bool qxl
= test_bit(i
, slot_device_qxl
);
732 bool system
= test_bit(i
, slot_device_system
);
734 void *pcihp
= acpi_data_push(bus_table
,
736 memcpy(pcihp
, ACPI_PCIHP_AML
, ACPI_PCIHP_SIZEOF
);
737 patch_pcihp(i
, pcihp
);
738 bus_hotplug_support
= true;
740 void *pcihp
= acpi_data_push(bus_table
,
742 memcpy(pcihp
, ACPI_PCIQXL_AML
, ACPI_PCIQXL_SIZEOF
);
743 patch_pciqxl(i
, pcihp
);
745 void *pcihp
= acpi_data_push(bus_table
,
747 memcpy(pcihp
, ACPI_PCIVGA_AML
, ACPI_PCIVGA_SIZEOF
);
748 patch_pcivga(i
, pcihp
);
750 /* Nothing to do: system devices are in DSDT or in SSDT above. */
751 } else if (present
) {
752 void *pcihp
= acpi_data_push(bus_table
,
753 ACPI_PCINOHP_SIZEOF
);
754 memcpy(pcihp
, ACPI_PCINOHP_AML
, ACPI_PCINOHP_SIZEOF
);
755 patch_pcinohp(i
, pcihp
);
760 method
= build_alloc_method("DVNT", 2);
762 for (i
= 0; i
< PCI_SLOT_MAX
; i
++) {
766 if (!test_bit(i
, slot_hotplug_enable
)) {
770 notify
= build_alloc_array();
771 op
= 0xA0; /* IfOp */
773 build_append_byte(notify
, 0x7B); /* AndOp */
774 build_append_byte(notify
, 0x68); /* Arg0Op */
775 build_append_int(notify
, 0x1U
<< i
);
776 build_append_byte(notify
, 0x00); /* NullName */
777 build_append_byte(notify
, 0x86); /* NotifyOp */
778 build_append_namestring(notify
, "S%.02X", PCI_DEVFN(i
, 0));
779 build_append_byte(notify
, 0x69); /* Arg1Op */
782 build_package(notify
, op
);
784 build_append_array(method
, notify
);
786 build_free_array(notify
);
789 build_append_and_cleanup_method(bus_table
, method
);
792 /* Append PCNT method to notify about events on local and child buses.
793 * Add unconditionally for root since DSDT expects it.
795 if (bus_hotplug_support
|| child
->notify_table
->len
|| !bus
->parent_dev
) {
796 method
= build_alloc_method("PCNT", 0);
798 /* If bus supports hotplug select it and notify about local events */
800 build_append_byte(method
, 0x70); /* StoreOp */
801 build_append_int(method
, qint_get_int(qobject_to_qint(bsel
)));
802 build_append_namestring(method
, "BNUM");
803 build_append_namestring(method
, "DVNT");
804 build_append_namestring(method
, "PCIU");
805 build_append_int(method
, 1); /* Device Check */
806 build_append_namestring(method
, "DVNT");
807 build_append_namestring(method
, "PCID");
808 build_append_int(method
, 3); /* Eject Request */
811 /* Notify about child bus events in any case */
812 build_append_array(method
, child
->notify_table
);
814 build_append_and_cleanup_method(bus_table
, method
);
816 /* Append description of child buses */
817 build_append_array(bus_table
, child
->device_table
);
820 if (bus
->parent_dev
) {
821 build_extop_package(bus_table
, op
);
823 build_package(bus_table
, op
);
826 /* Append our bus description to parent table */
827 build_append_array(parent
->device_table
, bus_table
);
829 /* Also tell parent how to notify us, invoking PCNT method.
830 * At the moment this is not needed for root as we have a single root.
832 if (bus
->parent_dev
) {
833 build_append_namestring(parent
->notify_table
, "^PCNT.S%.02X",
834 bus
->parent_dev
->devfn
);
838 qobject_decref(bsel
);
839 build_free_array(bus_table
);
840 build_pci_bus_state_cleanup(child
);
845 build_ssdt(GArray
*table_data
, GArray
*linker
,
846 AcpiCpuInfo
*cpu
, AcpiPmInfo
*pm
, AcpiMiscInfo
*misc
,
847 PcPciInfo
*pci
, PcGuestInfo
*guest_info
)
849 MachineState
*machine
= MACHINE(qdev_get_machine());
850 uint32_t nr_mem
= machine
->ram_slots
;
851 unsigned acpi_cpus
= guest_info
->apic_id_limit
;
852 Aml
*ssdt
, *sb_scope
, *scope
, *pkg
, *dev
, *method
, *crs
, *field
, *ifctx
;
855 ssdt
= init_aml_allocator();
856 /* The current AML generator can cover the APIC ID range [0..255],
857 * inclusive, for VCPU hotplug. */
858 QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT
> 256);
859 g_assert(acpi_cpus
<= ACPI_CPU_HOTPLUG_ID_LIMIT
);
861 /* Reserve space for header */
862 acpi_data_push(ssdt
->buf
, sizeof(AcpiTableHeader
));
864 scope
= aml_scope("\\_SB.PCI0");
865 /* build PCI0._CRS */
866 crs
= aml_resource_template();
868 aml_word_bus_number(aml_min_fixed
, aml_max_fixed
, aml_pos_decode
,
869 0x0000, 0x0000, 0x00FF, 0x0000, 0x0100));
870 aml_append(crs
, aml_io(aml_decode16
, 0x0CF8, 0x0CF8, 0x01, 0x08));
873 aml_word_io(aml_min_fixed
, aml_max_fixed
,
874 aml_pos_decode
, aml_entire_range
,
875 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
877 aml_word_io(aml_min_fixed
, aml_max_fixed
,
878 aml_pos_decode
, aml_entire_range
,
879 0x0000, 0x0D00, 0xFFFF, 0x0000, 0xF300));
881 aml_dword_memory(aml_pos_decode
, aml_min_fixed
, aml_max_fixed
,
882 aml_cacheable
, aml_ReadWrite
,
883 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
885 aml_dword_memory(aml_pos_decode
, aml_min_fixed
, aml_max_fixed
,
886 aml_non_cacheable
, aml_ReadWrite
,
887 0, pci
->w32
.begin
, pci
->w32
.end
- 1, 0,
888 pci
->w32
.end
- pci
->w32
.begin
));
889 if (pci
->w64
.begin
) {
891 aml_qword_memory(aml_pos_decode
, aml_min_fixed
, aml_max_fixed
,
892 aml_cacheable
, aml_ReadWrite
,
893 0, pci
->w64
.begin
, pci
->w64
.end
- 1, 0,
894 pci
->w64
.end
- pci
->w64
.begin
));
896 aml_append(scope
, aml_name_decl("_CRS", crs
));
898 /* reserve GPE0 block resources */
899 dev
= aml_device("GPE0");
900 aml_append(dev
, aml_name_decl("_HID", aml_string("PNP0A06")));
901 aml_append(dev
, aml_name_decl("_UID", aml_string("GPE0 resources")));
902 /* device present, functioning, decoding, not shown in UI */
903 aml_append(dev
, aml_name_decl("_STA", aml_int(0xB)));
904 crs
= aml_resource_template();
906 aml_io(aml_decode16
, pm
->gpe0_blk
, pm
->gpe0_blk
, 1, pm
->gpe0_blk_len
)
908 aml_append(dev
, aml_name_decl("_CRS", crs
));
909 aml_append(scope
, dev
);
911 /* reserve PCIHP resources */
912 if (pm
->pcihp_io_len
) {
913 dev
= aml_device("PHPR");
914 aml_append(dev
, aml_name_decl("_HID", aml_string("PNP0A06")));
916 aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
917 /* device present, functioning, decoding, not shown in UI */
918 aml_append(dev
, aml_name_decl("_STA", aml_int(0xB)));
919 crs
= aml_resource_template();
921 aml_io(aml_decode16
, pm
->pcihp_io_base
, pm
->pcihp_io_base
, 1,
924 aml_append(dev
, aml_name_decl("_CRS", crs
));
925 aml_append(scope
, dev
);
927 aml_append(ssdt
, scope
);
929 /* create S3_ / S4_ / S5_ packages if necessary */
930 scope
= aml_scope("\\");
931 if (!pm
->s3_disabled
) {
932 pkg
= aml_package(4);
933 aml_append(pkg
, aml_int(1)); /* PM1a_CNT.SLP_TYP */
934 aml_append(pkg
, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
935 aml_append(pkg
, aml_int(0)); /* reserved */
936 aml_append(pkg
, aml_int(0)); /* reserved */
937 aml_append(scope
, aml_name_decl("_S3", pkg
));
940 if (!pm
->s4_disabled
) {
941 pkg
= aml_package(4);
942 aml_append(pkg
, aml_int(pm
->s4_val
)); /* PM1a_CNT.SLP_TYP */
943 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
944 aml_append(pkg
, aml_int(pm
->s4_val
));
945 aml_append(pkg
, aml_int(0)); /* reserved */
946 aml_append(pkg
, aml_int(0)); /* reserved */
947 aml_append(scope
, aml_name_decl("_S4", pkg
));
950 pkg
= aml_package(4);
951 aml_append(pkg
, aml_int(0)); /* PM1a_CNT.SLP_TYP */
952 aml_append(pkg
, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
953 aml_append(pkg
, aml_int(0)); /* reserved */
954 aml_append(pkg
, aml_int(0)); /* reserved */
955 aml_append(scope
, aml_name_decl("_S5", pkg
));
956 aml_append(ssdt
, scope
);
958 if (misc
->pvpanic_port
) {
959 scope
= aml_scope("\\_SB.PCI0.ISA");
961 dev
= aml_device("PEVR");
962 aml_append(dev
, aml_name_decl("_HID", aml_string("QEMU0002")));
964 crs
= aml_resource_template();
966 aml_io(aml_decode16
, misc
->pvpanic_port
, misc
->pvpanic_port
, 1, 1)
968 aml_append(dev
, aml_name_decl("_CRS", crs
));
970 aml_append(dev
, aml_operation_region("PEOR", aml_system_io
,
971 misc
->pvpanic_port
, 1));
972 field
= aml_field("PEOR", aml_byte_acc
);
973 aml_append(field
, aml_named_field("PEPT", 8));
974 aml_append(dev
, field
);
976 method
= aml_method("RDPT", 0);
977 aml_append(method
, aml_store(aml_name("PEPT"), aml_local(0)));
978 aml_append(method
, aml_return(aml_local(0)));
979 aml_append(dev
, method
);
981 method
= aml_method("WRPT", 1);
982 aml_append(method
, aml_store(aml_arg(0), aml_name("PEPT")));
983 aml_append(dev
, method
);
985 aml_append(scope
, dev
);
986 aml_append(ssdt
, scope
);
989 sb_scope
= aml_scope("_SB");
991 /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */
992 dev
= aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE
));
993 aml_append(dev
, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
995 aml_name_decl("_UID", aml_string("CPU Hotplug resources"))
997 /* device present, functioning, decoding, not shown in UI */
998 aml_append(dev
, aml_name_decl("_STA", aml_int(0xB)));
999 crs
= aml_resource_template();
1001 aml_io(aml_decode16
, pm
->cpu_hp_io_base
, pm
->cpu_hp_io_base
, 1,
1004 aml_append(dev
, aml_name_decl("_CRS", crs
));
1005 aml_append(sb_scope
, dev
);
1006 /* declare CPU hotplug MMIO region and PRS field to access it */
1007 aml_append(sb_scope
, aml_operation_region(
1008 "PRST", aml_system_io
, pm
->cpu_hp_io_base
, pm
->cpu_hp_io_len
));
1009 field
= aml_field("PRST", aml_byte_acc
);
1010 aml_append(field
, aml_named_field("PRS", 256));
1011 aml_append(sb_scope
, field
);
1013 /* build Processor object for each processor */
1014 for (i
= 0; i
< acpi_cpus
; i
++) {
1015 dev
= aml_processor(i
, 0, 0, "CP%.02X", i
);
1017 method
= aml_method("_MAT", 0);
1018 aml_append(method
, aml_return(aml_call1("CPMA", aml_int(i
))));
1019 aml_append(dev
, method
);
1021 method
= aml_method("_STA", 0);
1022 aml_append(method
, aml_return(aml_call1("CPST", aml_int(i
))));
1023 aml_append(dev
, method
);
1025 method
= aml_method("_EJ0", 1);
1027 aml_return(aml_call2("CPEJ", aml_int(i
), aml_arg(0)))
1029 aml_append(dev
, method
);
1031 aml_append(sb_scope
, dev
);
1035 * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
1037 /* Arg0 = Processor ID = APIC ID */
1038 method
= aml_method("NTFY", 2);
1039 for (i
= 0; i
< acpi_cpus
; i
++) {
1040 ifctx
= aml_if(aml_equal(aml_arg(0), aml_int(i
)));
1042 aml_notify(aml_name("CP%.02X", i
), aml_arg(1))
1044 aml_append(method
, ifctx
);
1046 aml_append(sb_scope
, method
);
1048 /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
1050 * Note: The ability to create variable-sized packages was first
1051 * ntroduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages
1052 * ith up to 255 elements. Windows guests up to win2k8 fail when
1053 * VarPackageOp is used.
1055 pkg
= acpi_cpus
<= 255 ? aml_package(acpi_cpus
) :
1056 aml_varpackage(acpi_cpus
);
1058 for (i
= 0; i
< acpi_cpus
; i
++) {
1059 uint8_t b
= test_bit(i
, cpu
->found_cpus
) ? 0x01 : 0x00;
1060 aml_append(pkg
, aml_int(b
));
1062 aml_append(sb_scope
, aml_name_decl("CPON", pkg
));
1064 /* build memory devices */
1065 assert(nr_mem
<= ACPI_MAX_RAM_SLOTS
);
1066 scope
= aml_scope("\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE
));
1068 aml_name_decl(stringify(MEMORY_SLOTS_NUMBER
), aml_int(nr_mem
))
1071 crs
= aml_resource_template();
1073 aml_io(aml_decode16
, pm
->mem_hp_io_base
, pm
->mem_hp_io_base
, 0,
1076 aml_append(scope
, aml_name_decl("_CRS", crs
));
1078 aml_append(scope
, aml_operation_region(
1079 stringify(MEMORY_HOTPLUG_IO_REGION
), aml_system_io
,
1080 pm
->mem_hp_io_base
, pm
->mem_hp_io_len
)
1083 field
= aml_field(stringify(MEMORY_HOTPLUG_IO_REGION
), aml_dword_acc
);
1084 aml_append(field
, /* read only */
1085 aml_named_field(stringify(MEMORY_SLOT_ADDR_LOW
), 32));
1086 aml_append(field
, /* read only */
1087 aml_named_field(stringify(MEMORY_SLOT_ADDR_HIGH
), 32));
1088 aml_append(field
, /* read only */
1089 aml_named_field(stringify(MEMORY_SLOT_SIZE_LOW
), 32));
1090 aml_append(field
, /* read only */
1091 aml_named_field(stringify(MEMORY_SLOT_SIZE_HIGH
), 32));
1092 aml_append(field
, /* read only */
1093 aml_named_field(stringify(MEMORY_SLOT_PROXIMITY
), 32));
1094 aml_append(scope
, field
);
1096 field
= aml_field(stringify(MEMORY_HOTPLUG_IO_REGION
), aml_byte_acc
);
1097 aml_append(field
, aml_reserved_field(160 /* bits, Offset(20) */));
1098 aml_append(field
, /* 1 if enabled, read only */
1099 aml_named_field(stringify(MEMORY_SLOT_ENABLED
), 1));
1101 /*(read) 1 if has a insert event. (write) 1 to clear event */
1102 aml_named_field(stringify(MEMORY_SLOT_INSERT_EVENT
), 1));
1103 aml_append(scope
, field
);
1105 field
= aml_field(stringify(MEMORY_HOTPLUG_IO_REGION
), aml_dword_acc
);
1106 aml_append(field
, /* DIMM selector, write only */
1107 aml_named_field(stringify(MEMORY_SLOT_SLECTOR
), 32));
1108 aml_append(field
, /* _OST event code, write only */
1109 aml_named_field(stringify(MEMORY_SLOT_OST_EVENT
), 32));
1110 aml_append(field
, /* _OST status code, write only */
1111 aml_named_field(stringify(MEMORY_SLOT_OST_STATUS
), 32));
1112 aml_append(scope
, field
);
1114 aml_append(sb_scope
, scope
);
1116 for (i
= 0; i
< nr_mem
; i
++) {
1117 #define BASEPATH "\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE) "."
1120 dev
= aml_device("MP%02X", i
);
1121 aml_append(dev
, aml_name_decl("_UID", aml_string("0x%02X", i
)));
1122 aml_append(dev
, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
1124 method
= aml_method("_CRS", 0);
1125 s
= BASEPATH
stringify(MEMORY_SLOT_CRS_METHOD
);
1126 aml_append(method
, aml_return(aml_call1(s
, aml_name("_UID"))));
1127 aml_append(dev
, method
);
1129 method
= aml_method("_STA", 0);
1130 s
= BASEPATH
stringify(MEMORY_SLOT_STATUS_METHOD
);
1131 aml_append(method
, aml_return(aml_call1(s
, aml_name("_UID"))));
1132 aml_append(dev
, method
);
1134 method
= aml_method("_PXM", 0);
1135 s
= BASEPATH
stringify(MEMORY_SLOT_PROXIMITY_METHOD
);
1136 aml_append(method
, aml_return(aml_call1(s
, aml_name("_UID"))));
1137 aml_append(dev
, method
);
1139 method
= aml_method("_OST", 3);
1140 s
= BASEPATH
stringify(MEMORY_SLOT_OST_METHOD
);
1141 aml_append(method
, aml_return(aml_call4(
1142 s
, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2)
1144 aml_append(dev
, method
);
1146 aml_append(sb_scope
, dev
);
1149 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
1150 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ...
1152 method
= aml_method(stringify(MEMORY_SLOT_NOTIFY_METHOD
), 2);
1153 for (i
= 0; i
< nr_mem
; i
++) {
1154 ifctx
= aml_if(aml_equal(aml_arg(0), aml_int(i
)));
1156 aml_notify(aml_name("MP%.02X", i
), aml_arg(1))
1158 aml_append(method
, ifctx
);
1160 aml_append(sb_scope
, method
);
1163 AcpiBuildPciBusHotplugState hotplug_state
;
1168 pci_host
= object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE
, &ambiguous
);
1169 if (!ambiguous
&& pci_host
) {
1170 bus
= PCI_HOST_BRIDGE(pci_host
)->bus
;
1173 build_pci_bus_state_init(&hotplug_state
, NULL
, pm
->pcihp_bridge_en
);
1176 /* Scan all PCI buses. Generate tables to support hotplug. */
1177 pci_for_each_bus_depth_first(bus
, build_pci_bus_begin
,
1178 build_pci_bus_end
, &hotplug_state
);
1181 build_append_array(sb_scope
->buf
, hotplug_state
.device_table
);
1182 build_pci_bus_state_cleanup(&hotplug_state
);
1184 aml_append(ssdt
, sb_scope
);
1187 /* copy AML table into ACPI tables blob and patch header there */
1188 g_array_append_vals(table_data
, ssdt
->buf
->data
, ssdt
->buf
->len
);
1189 build_header(linker
, table_data
,
1190 (void *)(table_data
->data
+ table_data
->len
- ssdt
->buf
->len
),
1191 "SSDT", ssdt
->buf
->len
, 1);
1192 free_aml_allocator();
1196 build_hpet(GArray
*table_data
, GArray
*linker
)
1200 hpet
= acpi_data_push(table_data
, sizeof(*hpet
));
1201 /* Note timer_block_id value must be kept in sync with value advertised by
1204 hpet
->timer_block_id
= cpu_to_le32(0x8086a201);
1205 hpet
->addr
.address
= cpu_to_le64(HPET_BASE
);
1206 build_header(linker
, table_data
,
1207 (void *)hpet
, "HPET", sizeof(*hpet
), 1);
1211 build_tpm_tcpa(GArray
*table_data
, GArray
*linker
, GArray
*tcpalog
)
1213 Acpi20Tcpa
*tcpa
= acpi_data_push(table_data
, sizeof *tcpa
);
1214 uint64_t log_area_start_address
= acpi_data_len(tcpalog
);
1216 tcpa
->platform_class
= cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT
);
1217 tcpa
->log_area_minimum_length
= cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE
);
1218 tcpa
->log_area_start_address
= cpu_to_le64(log_area_start_address
);
1220 bios_linker_loader_alloc(linker
, ACPI_BUILD_TPMLOG_FILE
, 1,
1221 false /* high memory */);
1223 /* log area start address to be filled by Guest linker */
1224 bios_linker_loader_add_pointer(linker
, ACPI_BUILD_TABLE_FILE
,
1225 ACPI_BUILD_TPMLOG_FILE
,
1226 table_data
, &tcpa
->log_area_start_address
,
1227 sizeof(tcpa
->log_area_start_address
));
1229 build_header(linker
, table_data
,
1230 (void *)tcpa
, "TCPA", sizeof(*tcpa
), 2);
1232 acpi_data_push(tcpalog
, TPM_LOG_AREA_MINIMUM_SIZE
);
1236 build_tpm_ssdt(GArray
*table_data
, GArray
*linker
)
1240 tpm_ptr
= acpi_data_push(table_data
, sizeof(ssdt_tpm_aml
));
1241 memcpy(tpm_ptr
, ssdt_tpm_aml
, sizeof(ssdt_tpm_aml
));
1245 MEM_AFFINITY_NOFLAGS
= 0,
1246 MEM_AFFINITY_ENABLED
= (1 << 0),
1247 MEM_AFFINITY_HOTPLUGGABLE
= (1 << 1),
1248 MEM_AFFINITY_NON_VOLATILE
= (1 << 2),
1249 } MemoryAffinityFlags
;
1252 acpi_build_srat_memory(AcpiSratMemoryAffinity
*numamem
, uint64_t base
,
1253 uint64_t len
, int node
, MemoryAffinityFlags flags
)
1255 numamem
->type
= ACPI_SRAT_MEMORY
;
1256 numamem
->length
= sizeof(*numamem
);
1257 memset(numamem
->proximity
, 0, 4);
1258 numamem
->proximity
[0] = node
;
1259 numamem
->flags
= cpu_to_le32(flags
);
1260 numamem
->base_addr
= cpu_to_le64(base
);
1261 numamem
->range_length
= cpu_to_le64(len
);
1265 build_srat(GArray
*table_data
, GArray
*linker
, PcGuestInfo
*guest_info
)
1267 AcpiSystemResourceAffinityTable
*srat
;
1268 AcpiSratProcessorAffinity
*core
;
1269 AcpiSratMemoryAffinity
*numamem
;
1273 int srat_start
, numa_start
, slots
;
1274 uint64_t mem_len
, mem_base
, next_base
;
1275 PCMachineState
*pcms
= PC_MACHINE(qdev_get_machine());
1276 ram_addr_t hotplugabble_address_space_size
=
1277 object_property_get_int(OBJECT(pcms
), PC_MACHINE_MEMHP_REGION_SIZE
,
1280 srat_start
= table_data
->len
;
1282 srat
= acpi_data_push(table_data
, sizeof *srat
);
1283 srat
->reserved1
= cpu_to_le32(1);
1284 core
= (void *)(srat
+ 1);
1286 for (i
= 0; i
< guest_info
->apic_id_limit
; ++i
) {
1287 core
= acpi_data_push(table_data
, sizeof *core
);
1288 core
->type
= ACPI_SRAT_PROCESSOR
;
1289 core
->length
= sizeof(*core
);
1290 core
->local_apic_id
= i
;
1291 curnode
= guest_info
->node_cpu
[i
];
1292 core
->proximity_lo
= curnode
;
1293 memset(core
->proximity_hi
, 0, 3);
1294 core
->local_sapic_eid
= 0;
1295 core
->flags
= cpu_to_le32(1);
1299 /* the memory map is a bit tricky, it contains at least one hole
1300 * from 640k-1M and possibly another one from 3.5G-4G.
1303 numa_start
= table_data
->len
;
1305 numamem
= acpi_data_push(table_data
, sizeof *numamem
);
1306 acpi_build_srat_memory(numamem
, 0, 640*1024, 0, MEM_AFFINITY_ENABLED
);
1307 next_base
= 1024 * 1024;
1308 for (i
= 1; i
< guest_info
->numa_nodes
+ 1; ++i
) {
1309 mem_base
= next_base
;
1310 mem_len
= guest_info
->node_mem
[i
- 1];
1312 mem_len
-= 1024 * 1024;
1314 next_base
= mem_base
+ mem_len
;
1316 /* Cut out the ACPI_PCI hole */
1317 if (mem_base
<= guest_info
->ram_size_below_4g
&&
1318 next_base
> guest_info
->ram_size_below_4g
) {
1319 mem_len
-= next_base
- guest_info
->ram_size_below_4g
;
1321 numamem
= acpi_data_push(table_data
, sizeof *numamem
);
1322 acpi_build_srat_memory(numamem
, mem_base
, mem_len
, i
- 1,
1323 MEM_AFFINITY_ENABLED
);
1325 mem_base
= 1ULL << 32;
1326 mem_len
= next_base
- guest_info
->ram_size_below_4g
;
1327 next_base
+= (1ULL << 32) - guest_info
->ram_size_below_4g
;
1329 numamem
= acpi_data_push(table_data
, sizeof *numamem
);
1330 acpi_build_srat_memory(numamem
, mem_base
, mem_len
, i
- 1,
1331 MEM_AFFINITY_ENABLED
);
1333 slots
= (table_data
->len
- numa_start
) / sizeof *numamem
;
1334 for (; slots
< guest_info
->numa_nodes
+ 2; slots
++) {
1335 numamem
= acpi_data_push(table_data
, sizeof *numamem
);
1336 acpi_build_srat_memory(numamem
, 0, 0, 0, MEM_AFFINITY_NOFLAGS
);
1340 * Entry is required for Windows to enable memory hotplug in OS.
1341 * Memory devices may override proximity set by this entry,
1342 * providing _PXM method if necessary.
1344 if (hotplugabble_address_space_size
) {
1345 numamem
= acpi_data_push(table_data
, sizeof *numamem
);
1346 acpi_build_srat_memory(numamem
, pcms
->hotplug_memory_base
,
1347 hotplugabble_address_space_size
, 0,
1348 MEM_AFFINITY_HOTPLUGGABLE
|
1349 MEM_AFFINITY_ENABLED
);
1352 build_header(linker
, table_data
,
1353 (void *)(table_data
->data
+ srat_start
),
1355 table_data
->len
- srat_start
, 1);
1359 build_mcfg_q35(GArray
*table_data
, GArray
*linker
, AcpiMcfgInfo
*info
)
1361 AcpiTableMcfg
*mcfg
;
1363 int len
= sizeof(*mcfg
) + 1 * sizeof(mcfg
->allocation
[0]);
1365 mcfg
= acpi_data_push(table_data
, len
);
1366 mcfg
->allocation
[0].address
= cpu_to_le64(info
->mcfg_base
);
1367 /* Only a single allocation so no need to play with segments */
1368 mcfg
->allocation
[0].pci_segment
= cpu_to_le16(0);
1369 mcfg
->allocation
[0].start_bus_number
= 0;
1370 mcfg
->allocation
[0].end_bus_number
= PCIE_MMCFG_BUS(info
->mcfg_size
- 1);
1372 /* MCFG is used for ECAM which can be enabled or disabled by guest.
1373 * To avoid table size changes (which create migration issues),
1374 * always create the table even if there are no allocations,
1375 * but set the signature to a reserved value in this case.
1376 * ACPI spec requires OSPMs to ignore such tables.
1378 if (info
->mcfg_base
== PCIE_BASE_ADDR_UNMAPPED
) {
1379 /* Reserved signature: ignored by OSPM */
1384 build_header(linker
, table_data
, (void *)mcfg
, sig
, len
, 1);
1388 build_dmar_q35(GArray
*table_data
, GArray
*linker
)
1390 int dmar_start
= table_data
->len
;
1392 AcpiTableDmar
*dmar
;
1393 AcpiDmarHardwareUnit
*drhd
;
1395 dmar
= acpi_data_push(table_data
, sizeof(*dmar
));
1396 dmar
->host_address_width
= VTD_HOST_ADDRESS_WIDTH
- 1;
1397 dmar
->flags
= 0; /* No intr_remap for now */
1399 /* DMAR Remapping Hardware Unit Definition structure */
1400 drhd
= acpi_data_push(table_data
, sizeof(*drhd
));
1401 drhd
->type
= cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT
);
1402 drhd
->length
= cpu_to_le16(sizeof(*drhd
)); /* No device scope now */
1403 drhd
->flags
= ACPI_DMAR_INCLUDE_PCI_ALL
;
1404 drhd
->pci_segment
= cpu_to_le16(0);
1405 drhd
->address
= cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR
);
1407 build_header(linker
, table_data
, (void *)(table_data
->data
+ dmar_start
),
1408 "DMAR", table_data
->len
- dmar_start
, 1);
1412 build_dsdt(GArray
*table_data
, GArray
*linker
, AcpiMiscInfo
*misc
)
1414 AcpiTableHeader
*dsdt
;
1416 assert(misc
->dsdt_code
&& misc
->dsdt_size
);
1418 dsdt
= acpi_data_push(table_data
, misc
->dsdt_size
);
1419 memcpy(dsdt
, misc
->dsdt_code
, misc
->dsdt_size
);
1421 memset(dsdt
, 0, sizeof *dsdt
);
1422 build_header(linker
, table_data
, dsdt
, "DSDT",
1423 misc
->dsdt_size
, 1);
1426 /* Build final rsdt table */
1428 build_rsdt(GArray
*table_data
, GArray
*linker
, GArray
*table_offsets
)
1430 AcpiRsdtDescriptorRev1
*rsdt
;
1434 rsdt_len
= sizeof(*rsdt
) + sizeof(uint32_t) * table_offsets
->len
;
1435 rsdt
= acpi_data_push(table_data
, rsdt_len
);
1436 memcpy(rsdt
->table_offset_entry
, table_offsets
->data
,
1437 sizeof(uint32_t) * table_offsets
->len
);
1438 for (i
= 0; i
< table_offsets
->len
; ++i
) {
1439 /* rsdt->table_offset_entry to be filled by Guest linker */
1440 bios_linker_loader_add_pointer(linker
,
1441 ACPI_BUILD_TABLE_FILE
,
1442 ACPI_BUILD_TABLE_FILE
,
1443 table_data
, &rsdt
->table_offset_entry
[i
],
1446 build_header(linker
, table_data
,
1447 (void *)rsdt
, "RSDT", rsdt_len
, 1);
1451 build_rsdp(GArray
*rsdp_table
, GArray
*linker
, unsigned rsdt
)
1453 AcpiRsdpDescriptor
*rsdp
= acpi_data_push(rsdp_table
, sizeof *rsdp
);
1455 bios_linker_loader_alloc(linker
, ACPI_BUILD_RSDP_FILE
, 16,
1456 true /* fseg memory */);
1458 memcpy(&rsdp
->signature
, "RSD PTR ", 8);
1459 memcpy(rsdp
->oem_id
, ACPI_BUILD_APPNAME6
, 6);
1460 rsdp
->rsdt_physical_address
= cpu_to_le32(rsdt
);
1461 /* Address to be filled by Guest linker */
1462 bios_linker_loader_add_pointer(linker
, ACPI_BUILD_RSDP_FILE
,
1463 ACPI_BUILD_TABLE_FILE
,
1464 rsdp_table
, &rsdp
->rsdt_physical_address
,
1465 sizeof rsdp
->rsdt_physical_address
);
1467 /* Checksum to be filled by Guest linker */
1468 bios_linker_loader_add_checksum(linker
, ACPI_BUILD_RSDP_FILE
,
1469 rsdp
, rsdp
, sizeof *rsdp
, &rsdp
->checksum
);
1475 struct AcpiBuildTables
{
1482 static inline void acpi_build_tables_init(AcpiBuildTables
*tables
)
1484 tables
->rsdp
= g_array_new(false, true /* clear */, 1);
1485 tables
->table_data
= g_array_new(false, true /* clear */, 1);
1486 tables
->tcpalog
= g_array_new(false, true /* clear */, 1);
1487 tables
->linker
= bios_linker_loader_init();
1490 static inline void acpi_build_tables_cleanup(AcpiBuildTables
*tables
, bool mfre
)
1492 void *linker_data
= bios_linker_loader_cleanup(tables
->linker
);
1493 g_free(linker_data
);
1494 g_array_free(tables
->rsdp
, true);
1495 g_array_free(tables
->table_data
, true);
1496 g_array_free(tables
->tcpalog
, mfre
);
1500 struct AcpiBuildState
{
1501 /* Copy of table in RAM (for patching). */
1502 ram_addr_t table_ram
;
1503 /* Is table patched? */
1505 PcGuestInfo
*guest_info
;
1507 ram_addr_t rsdp_ram
;
1508 ram_addr_t linker_ram
;
1511 static bool acpi_get_mcfg(AcpiMcfgInfo
*mcfg
)
1517 pci_host
= object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE
, &ambiguous
);
1518 g_assert(!ambiguous
);
1521 o
= object_property_get_qobject(pci_host
, PCIE_HOST_MCFG_BASE
, NULL
);
1525 mcfg
->mcfg_base
= qint_get_int(qobject_to_qint(o
));
1528 o
= object_property_get_qobject(pci_host
, PCIE_HOST_MCFG_SIZE
, NULL
);
1530 mcfg
->mcfg_size
= qint_get_int(qobject_to_qint(o
));
1535 static bool acpi_has_iommu(void)
1538 Object
*intel_iommu
;
1540 intel_iommu
= object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE
,
1542 return intel_iommu
&& !ambiguous
;
1546 void acpi_build(PcGuestInfo
*guest_info
, AcpiBuildTables
*tables
)
1548 GArray
*table_offsets
;
1549 unsigned facs
, ssdt
, dsdt
, rsdt
;
1557 GArray
*tables_blob
= tables
->table_data
;
1559 acpi_get_cpu_info(&cpu
);
1560 acpi_get_pm_info(&pm
);
1561 acpi_get_dsdt(&misc
);
1562 acpi_get_misc_info(&misc
);
1563 acpi_get_pci_info(&pci
);
1565 table_offsets
= g_array_new(false, true /* clear */,
1567 ACPI_BUILD_DPRINTF("init ACPI tables\n");
1569 bios_linker_loader_alloc(tables
->linker
, ACPI_BUILD_TABLE_FILE
,
1570 64 /* Ensure FACS is aligned */,
1571 false /* high memory */);
1574 * FACS is pointed to by FADT.
1575 * We place it first since it's the only table that has alignment
1578 facs
= tables_blob
->len
;
1579 build_facs(tables_blob
, tables
->linker
, guest_info
);
1581 /* DSDT is pointed to by FADT */
1582 dsdt
= tables_blob
->len
;
1583 build_dsdt(tables_blob
, tables
->linker
, &misc
);
1585 /* Count the size of the DSDT and SSDT, we will need it for legacy
1586 * sizing of ACPI tables.
1588 aml_len
+= tables_blob
->len
- dsdt
;
1590 /* ACPI tables pointed to by RSDT */
1591 acpi_add_table(table_offsets
, tables_blob
);
1592 build_fadt(tables_blob
, tables
->linker
, &pm
, facs
, dsdt
);
1594 ssdt
= tables_blob
->len
;
1595 acpi_add_table(table_offsets
, tables_blob
);
1596 build_ssdt(tables_blob
, tables
->linker
, &cpu
, &pm
, &misc
, &pci
,
1598 aml_len
+= tables_blob
->len
- ssdt
;
1600 acpi_add_table(table_offsets
, tables_blob
);
1601 build_madt(tables_blob
, tables
->linker
, &cpu
, guest_info
);
1603 if (misc
.has_hpet
) {
1604 acpi_add_table(table_offsets
, tables_blob
);
1605 build_hpet(tables_blob
, tables
->linker
);
1608 acpi_add_table(table_offsets
, tables_blob
);
1609 build_tpm_tcpa(tables_blob
, tables
->linker
, tables
->tcpalog
);
1611 acpi_add_table(table_offsets
, tables_blob
);
1612 build_tpm_ssdt(tables_blob
, tables
->linker
);
1614 if (guest_info
->numa_nodes
) {
1615 acpi_add_table(table_offsets
, tables_blob
);
1616 build_srat(tables_blob
, tables
->linker
, guest_info
);
1618 if (acpi_get_mcfg(&mcfg
)) {
1619 acpi_add_table(table_offsets
, tables_blob
);
1620 build_mcfg_q35(tables_blob
, tables
->linker
, &mcfg
);
1622 if (acpi_has_iommu()) {
1623 acpi_add_table(table_offsets
, tables_blob
);
1624 build_dmar_q35(tables_blob
, tables
->linker
);
1627 /* Add tables supplied by user (if any) */
1628 for (u
= acpi_table_first(); u
; u
= acpi_table_next(u
)) {
1629 unsigned len
= acpi_table_len(u
);
1631 acpi_add_table(table_offsets
, tables_blob
);
1632 g_array_append_vals(tables_blob
, u
, len
);
1635 /* RSDT is pointed to by RSDP */
1636 rsdt
= tables_blob
->len
;
1637 build_rsdt(tables_blob
, tables
->linker
, table_offsets
);
1639 /* RSDP is in FSEG memory, so allocate it separately */
1640 build_rsdp(tables
->rsdp
, tables
->linker
, rsdt
);
1642 /* We'll expose it all to Guest so we want to reduce
1643 * chance of size changes.
1645 * We used to align the tables to 4k, but of course this would
1646 * too simple to be enough. 4k turned out to be too small an
1647 * alignment very soon, and in fact it is almost impossible to
1648 * keep the table size stable for all (max_cpus, max_memory_slots)
1649 * combinations. So the table size is always 64k for pc-i440fx-2.1
1650 * and we give an error if the table grows beyond that limit.
1652 * We still have the problem of migrating from "-M pc-i440fx-2.0". For
1653 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
1654 * than 2.0 and we can always pad the smaller tables with zeros. We can
1655 * then use the exact size of the 2.0 tables.
1657 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
1659 if (guest_info
->legacy_acpi_table_size
) {
1660 /* Subtracting aml_len gives the size of fixed tables. Then add the
1661 * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
1663 int legacy_aml_len
=
1664 guest_info
->legacy_acpi_table_size
+
1665 ACPI_BUILD_LEGACY_CPU_AML_SIZE
* max_cpus
;
1666 int legacy_table_size
=
1667 ROUND_UP(tables_blob
->len
- aml_len
+ legacy_aml_len
,
1668 ACPI_BUILD_ALIGN_SIZE
);
1669 if (tables_blob
->len
> legacy_table_size
) {
1670 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
1671 error_report("Warning: migration may not work.");
1673 g_array_set_size(tables_blob
, legacy_table_size
);
1675 /* Make sure we have a buffer in case we need to resize the tables. */
1676 if (tables_blob
->len
> ACPI_BUILD_TABLE_SIZE
/ 2) {
1677 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
1678 error_report("Warning: ACPI tables are larger than 64k.");
1679 error_report("Warning: migration may not work.");
1680 error_report("Warning: please remove CPUs, NUMA nodes, "
1681 "memory slots or PCI bridges.");
1683 acpi_align_size(tables_blob
, ACPI_BUILD_TABLE_SIZE
);
1686 acpi_align_size(tables
->linker
, ACPI_BUILD_ALIGN_SIZE
);
1688 /* Cleanup memory that's no longer used. */
1689 g_array_free(table_offsets
, true);
1692 static void acpi_ram_update(ram_addr_t ram
, GArray
*data
)
1694 uint32_t size
= acpi_data_len(data
);
1696 /* Make sure RAM size is correct - in case it got changed e.g. by migration */
1697 qemu_ram_resize(ram
, size
, &error_abort
);
1699 memcpy(qemu_get_ram_ptr(ram
), data
->data
, size
);
1700 cpu_physical_memory_set_dirty_range_nocode(ram
, size
);
1703 static void acpi_build_update(void *build_opaque
, uint32_t offset
)
1705 AcpiBuildState
*build_state
= build_opaque
;
1706 AcpiBuildTables tables
;
1708 /* No state to update or already patched? Nothing to do. */
1709 if (!build_state
|| build_state
->patched
) {
1712 build_state
->patched
= 1;
1714 acpi_build_tables_init(&tables
);
1716 acpi_build(build_state
->guest_info
, &tables
);
1718 acpi_ram_update(build_state
->table_ram
, tables
.table_data
);
1720 if (build_state
->rsdp
) {
1721 memcpy(build_state
->rsdp
, tables
.rsdp
->data
, acpi_data_len(tables
.rsdp
));
1723 acpi_ram_update(build_state
->rsdp_ram
, tables
.rsdp
);
1726 acpi_ram_update(build_state
->linker_ram
, tables
.linker
);
1727 acpi_build_tables_cleanup(&tables
, true);
1730 static void acpi_build_reset(void *build_opaque
)
1732 AcpiBuildState
*build_state
= build_opaque
;
1733 build_state
->patched
= 0;
1736 static ram_addr_t
acpi_add_rom_blob(AcpiBuildState
*build_state
, GArray
*blob
,
1737 const char *name
, uint64_t max_size
)
1739 return rom_add_blob(name
, blob
->data
, acpi_data_len(blob
), max_size
, -1,
1740 name
, acpi_build_update
, build_state
);
1743 static const VMStateDescription vmstate_acpi_build
= {
1744 .name
= "acpi_build",
1746 .minimum_version_id
= 1,
1747 .fields
= (VMStateField
[]) {
1748 VMSTATE_UINT8(patched
, AcpiBuildState
),
1749 VMSTATE_END_OF_LIST()
1753 void acpi_setup(PcGuestInfo
*guest_info
)
1755 AcpiBuildTables tables
;
1756 AcpiBuildState
*build_state
;
1758 if (!guest_info
->fw_cfg
) {
1759 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
1763 if (!guest_info
->has_acpi_build
) {
1764 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
1768 if (!acpi_enabled
) {
1769 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
1773 build_state
= g_malloc0(sizeof *build_state
);
1775 build_state
->guest_info
= guest_info
;
1777 acpi_set_pci_info();
1779 acpi_build_tables_init(&tables
);
1780 acpi_build(build_state
->guest_info
, &tables
);
1782 /* Now expose it all to Guest */
1783 build_state
->table_ram
= acpi_add_rom_blob(build_state
, tables
.table_data
,
1784 ACPI_BUILD_TABLE_FILE
,
1785 ACPI_BUILD_TABLE_MAX_SIZE
);
1786 assert(build_state
->table_ram
!= RAM_ADDR_MAX
);
1788 build_state
->linker_ram
=
1789 acpi_add_rom_blob(build_state
, tables
.linker
, "etc/table-loader", 0);
1791 fw_cfg_add_file(guest_info
->fw_cfg
, ACPI_BUILD_TPMLOG_FILE
,
1792 tables
.tcpalog
->data
, acpi_data_len(tables
.tcpalog
));
1794 if (!guest_info
->rsdp_in_ram
) {
1796 * Keep for compatibility with old machine types.
1797 * Though RSDP is small, its contents isn't immutable, so
1798 * we'll update it along with the rest of tables on guest access.
1800 uint32_t rsdp_size
= acpi_data_len(tables
.rsdp
);
1802 build_state
->rsdp
= g_memdup(tables
.rsdp
->data
, rsdp_size
);
1803 fw_cfg_add_file_callback(guest_info
->fw_cfg
, ACPI_BUILD_RSDP_FILE
,
1804 acpi_build_update
, build_state
,
1805 build_state
->rsdp
, rsdp_size
);
1806 build_state
->rsdp_ram
= (ram_addr_t
)-1;
1808 build_state
->rsdp
= NULL
;
1809 build_state
->rsdp_ram
= acpi_add_rom_blob(build_state
, tables
.rsdp
,
1810 ACPI_BUILD_RSDP_FILE
, 0);
1813 qemu_register_reset(acpi_build_reset
, build_state
);
1814 acpi_build_reset(build_state
);
1815 vmstate_register(NULL
, 0, &vmstate_acpi_build
, build_state
);
1817 /* Cleanup tables but don't free the memory: we track it
1820 acpi_build_tables_cleanup(&tables
, false);