xref: /openbmc/qemu/hw/i386/pc_piix.c (revision 80e5db30)
1 /*
2  * QEMU PC System Emulator
3  *
4  * Copyright (c) 2003-2004 Fabrice Bellard
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 
25 #include "qemu/osdep.h"
26 
27 #include "hw/hw.h"
28 #include "hw/loader.h"
29 #include "hw/i386/pc.h"
30 #include "hw/i386/apic.h"
31 #include "hw/smbios/smbios.h"
32 #include "hw/pci/pci.h"
33 #include "hw/pci/pci_ids.h"
34 #include "hw/usb.h"
35 #include "net/net.h"
36 #include "hw/boards.h"
37 #include "hw/ide.h"
38 #include "sysemu/kvm.h"
39 #include "hw/kvm/clock.h"
40 #include "sysemu/sysemu.h"
41 #include "hw/sysbus.h"
42 #include "sysemu/arch_init.h"
43 #include "sysemu/block-backend.h"
44 #include "hw/i2c/smbus.h"
45 #include "hw/xen/xen.h"
46 #include "exec/memory.h"
47 #include "exec/address-spaces.h"
48 #include "hw/acpi/acpi.h"
49 #include "cpu.h"
50 #include "qemu/error-report.h"
51 #ifdef CONFIG_XEN
52 #include <xen/hvm/hvm_info_table.h>
53 #include "hw/xen/xen_pt.h"
54 #endif
55 #include "migration/migration.h"
56 #include "kvm_i386.h"
57 
58 #define MAX_IDE_BUS 2
59 
60 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
61 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
62 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
63 
64 /* PC hardware initialisation */
65 static void pc_init1(MachineState *machine,
66                      const char *host_type, const char *pci_type)
67 {
68     PCMachineState *pcms = PC_MACHINE(machine);
69     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
70     MemoryRegion *system_memory = get_system_memory();
71     MemoryRegion *system_io = get_system_io();
72     int i;
73     PCIBus *pci_bus;
74     ISABus *isa_bus;
75     PCII440FXState *i440fx_state;
76     int piix3_devfn = -1;
77     qemu_irq *i8259;
78     qemu_irq smi_irq;
79     GSIState *gsi_state;
80     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
81     BusState *idebus[MAX_IDE_BUS];
82     ISADevice *rtc_state;
83     MemoryRegion *ram_memory;
84     MemoryRegion *pci_memory;
85     MemoryRegion *rom_memory;
86     ram_addr_t lowmem;
87 
88     /*
89      * Calculate ram split, for memory below and above 4G.  It's a bit
90      * complicated for backward compatibility reasons ...
91      *
92      *  - Traditional split is 3.5G (lowmem = 0xe0000000).  This is the
93      *    default value for max_ram_below_4g now.
94      *
95      *  - Then, to gigabyte align the memory, we move the split to 3G
96      *    (lowmem = 0xc0000000).  But only in case we have to split in
97      *    the first place, i.e. ram_size is larger than (traditional)
98      *    lowmem.  And for new machine types (gigabyte_align = true)
99      *    only, for live migration compatibility reasons.
100      *
101      *  - Next the max-ram-below-4g option was added, which allowed to
102      *    reduce lowmem to a smaller value, to allow a larger PCI I/O
103      *    window below 4G.  qemu doesn't enforce gigabyte alignment here,
104      *    but prints a warning.
105      *
106      *  - Finally max-ram-below-4g got updated to also allow raising lowmem,
107      *    so legacy non-PAE guests can get as much memory as possible in
108      *    the 32bit address space below 4G.
109      *
110      *  - Note that Xen has its own ram setp code in xen_ram_init(),
111      *    called via xen_hvm_init().
112      *
113      * Examples:
114      *    qemu -M pc-1.7 -m 4G    (old default)    -> 3584M low,  512M high
115      *    qemu -M pc -m 4G        (new default)    -> 3072M low, 1024M high
116      *    qemu -M pc,max-ram-below-4g=2G -m 4G     -> 2048M low, 2048M high
117      *    qemu -M pc,max-ram-below-4g=4G -m 3968M  -> 3968M low (=4G-128M)
118      */
119     if (xen_enabled()) {
120         xen_hvm_init(pcms, &ram_memory);
121     } else {
122         if (!pcms->max_ram_below_4g) {
123             pcms->max_ram_below_4g = 0xe0000000; /* default: 3.5G */
124         }
125         lowmem = pcms->max_ram_below_4g;
126         if (machine->ram_size >= pcms->max_ram_below_4g) {
127             if (pcmc->gigabyte_align) {
128                 if (lowmem > 0xc0000000) {
129                     lowmem = 0xc0000000;
130                 }
131                 if (lowmem & ((1ULL << 30) - 1)) {
132                     error_report("Warning: Large machine and max_ram_below_4g "
133                                  "(%" PRIu64 ") not a multiple of 1G; "
134                                  "possible bad performance.",
135                                  pcms->max_ram_below_4g);
136                 }
137             }
138         }
139 
140         if (machine->ram_size >= lowmem) {
141             pcms->above_4g_mem_size = machine->ram_size - lowmem;
142             pcms->below_4g_mem_size = lowmem;
143         } else {
144             pcms->above_4g_mem_size = 0;
145             pcms->below_4g_mem_size = machine->ram_size;
146         }
147     }
148 
149     pc_cpus_init(pcms);
150 
151     if (kvm_enabled() && pcmc->kvmclock_enabled) {
152         kvmclock_create();
153     }
154 
155     if (pcmc->pci_enabled) {
156         pci_memory = g_new(MemoryRegion, 1);
157         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
158         rom_memory = pci_memory;
159     } else {
160         pci_memory = NULL;
161         rom_memory = system_memory;
162     }
163 
164     pc_guest_info_init(pcms);
165 
166     if (pcmc->smbios_defaults) {
167         MachineClass *mc = MACHINE_GET_CLASS(machine);
168         /* These values are guest ABI, do not change */
169         smbios_set_defaults("QEMU", "Standard PC (i440FX + PIIX, 1996)",
170                             mc->name, pcmc->smbios_legacy_mode,
171                             pcmc->smbios_uuid_encoded,
172                             SMBIOS_ENTRY_POINT_21);
173     }
174 
175     /* allocate ram and load rom/bios */
176     if (!xen_enabled()) {
177         pc_memory_init(pcms, system_memory,
178                        rom_memory, &ram_memory);
179     } else if (machine->kernel_filename != NULL) {
180         /* For xen HVM direct kernel boot, load linux here */
181         xen_load_linux(pcms);
182     }
183 
184     gsi_state = g_malloc0(sizeof(*gsi_state));
185     if (kvm_ioapic_in_kernel()) {
186         kvm_pc_setup_irq_routing(pcmc->pci_enabled);
187         pcms->gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
188                                        GSI_NUM_PINS);
189     } else {
190         pcms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
191     }
192 
193     if (pcmc->pci_enabled) {
194         pci_bus = i440fx_init(host_type,
195                               pci_type,
196                               &i440fx_state, &piix3_devfn, &isa_bus, pcms->gsi,
197                               system_memory, system_io, machine->ram_size,
198                               pcms->below_4g_mem_size,
199                               pcms->above_4g_mem_size,
200                               pci_memory, ram_memory);
201         pcms->bus = pci_bus;
202     } else {
203         pci_bus = NULL;
204         i440fx_state = NULL;
205         isa_bus = isa_bus_new(NULL, get_system_memory(), system_io,
206                               &error_abort);
207         no_hpet = 1;
208     }
209     isa_bus_irqs(isa_bus, pcms->gsi);
210 
211     if (kvm_pic_in_kernel()) {
212         i8259 = kvm_i8259_init(isa_bus);
213     } else if (xen_enabled()) {
214         i8259 = xen_interrupt_controller_init();
215     } else {
216         i8259 = i8259_init(isa_bus, pc_allocate_cpu_irq());
217     }
218 
219     for (i = 0; i < ISA_NUM_IRQS; i++) {
220         gsi_state->i8259_irq[i] = i8259[i];
221     }
222     g_free(i8259);
223     if (pcmc->pci_enabled) {
224         ioapic_init_gsi(gsi_state, "i440fx");
225     }
226 
227     pc_register_ferr_irq(pcms->gsi[13]);
228 
229     pc_vga_init(isa_bus, pcmc->pci_enabled ? pci_bus : NULL);
230 
231     assert(pcms->vmport != ON_OFF_AUTO__MAX);
232     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
233         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
234     }
235 
236     /* init basic PC hardware */
237     pc_basic_device_init(isa_bus, pcms->gsi, &rtc_state, true,
238                          (pcms->vmport != ON_OFF_AUTO_ON), pcms->pit, 0x4);
239 
240     pc_nic_init(isa_bus, pci_bus);
241 
242     ide_drive_get(hd, ARRAY_SIZE(hd));
243     if (pcmc->pci_enabled) {
244         PCIDevice *dev;
245         if (xen_enabled()) {
246             dev = pci_piix3_xen_ide_init(pci_bus, hd, piix3_devfn + 1);
247         } else {
248             dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
249         }
250         idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
251         idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
252     } else {
253         for(i = 0; i < MAX_IDE_BUS; i++) {
254             ISADevice *dev;
255             char busname[] = "ide.0";
256             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
257                                ide_irq[i],
258                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
259             /*
260              * The ide bus name is ide.0 for the first bus and ide.1 for the
261              * second one.
262              */
263             busname[4] = '0' + i;
264             idebus[i] = qdev_get_child_bus(DEVICE(dev), busname);
265         }
266     }
267 
268     pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
269 
270     if (pcmc->pci_enabled && machine_usb(machine)) {
271         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
272     }
273 
274     if (pcmc->pci_enabled && acpi_enabled) {
275         DeviceState *piix4_pm;
276         I2CBus *smbus;
277 
278         smi_irq = qemu_allocate_irq(pc_acpi_smi_interrupt, first_cpu, 0);
279         /* TODO: Populate SPD eeprom data.  */
280         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
281                               pcms->gsi[9], smi_irq,
282                               pc_machine_is_smm_enabled(pcms),
283                               &piix4_pm);
284         smbus_eeprom_init(smbus, 8, NULL, 0);
285 
286         object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
287                                  TYPE_HOTPLUG_HANDLER,
288                                  (Object **)&pcms->acpi_dev,
289                                  object_property_allow_set_link,
290                                  OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort);
291         object_property_set_link(OBJECT(machine), OBJECT(piix4_pm),
292                                  PC_MACHINE_ACPI_DEVICE_PROP, &error_abort);
293     }
294 
295     if (pcmc->pci_enabled) {
296         pc_pci_device_init(pci_bus);
297     }
298 
299     if (pcms->acpi_nvdimm_state.is_enabled) {
300         nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
301                                pcms->fw_cfg, OBJECT(pcms));
302     }
303 }
304 
305 /* Looking for a pc_compat_2_4() function? It doesn't exist.
306  * pc_compat_*() functions that run on machine-init time and
307  * change global QEMU state are deprecated. Please don't create
308  * one, and implement any pc-*-2.4 (and newer) compat code in
309  * HW_COMPAT_*, PC_COMPAT_*, or * pc_*_machine_options().
310  */
311 
312 static void pc_compat_2_3(MachineState *machine)
313 {
314     PCMachineState *pcms = PC_MACHINE(machine);
315     savevm_skip_section_footers();
316     if (kvm_enabled()) {
317         pcms->smm = ON_OFF_AUTO_OFF;
318     }
319     global_state_set_optional();
320     savevm_skip_configuration();
321 }
322 
323 static void pc_compat_2_2(MachineState *machine)
324 {
325     pc_compat_2_3(machine);
326     machine->suppress_vmdesc = true;
327 }
328 
329 static void pc_compat_2_1(MachineState *machine)
330 {
331     pc_compat_2_2(machine);
332     x86_cpu_change_kvm_default("svm", NULL);
333 }
334 
335 static void pc_compat_2_0(MachineState *machine)
336 {
337     pc_compat_2_1(machine);
338 }
339 
340 static void pc_compat_1_7(MachineState *machine)
341 {
342     pc_compat_2_0(machine);
343     x86_cpu_change_kvm_default("x2apic", NULL);
344 }
345 
346 static void pc_compat_1_6(MachineState *machine)
347 {
348     pc_compat_1_7(machine);
349 }
350 
351 static void pc_compat_1_5(MachineState *machine)
352 {
353     pc_compat_1_6(machine);
354 }
355 
356 static void pc_compat_1_4(MachineState *machine)
357 {
358     pc_compat_1_5(machine);
359 }
360 
361 static void pc_compat_1_3(MachineState *machine)
362 {
363     pc_compat_1_4(machine);
364     enable_compat_apic_id_mode();
365 }
366 
367 /* PC compat function for pc-0.14 to pc-1.2 */
368 static void pc_compat_1_2(MachineState *machine)
369 {
370     pc_compat_1_3(machine);
371     x86_cpu_change_kvm_default("kvm-pv-eoi", NULL);
372 }
373 
374 /* PC compat function for pc-0.10 to pc-0.13 */
375 static void pc_compat_0_13(MachineState *machine)
376 {
377     pc_compat_1_2(machine);
378 }
379 
380 static void pc_init_isa(MachineState *machine)
381 {
382     if (!machine->cpu_model) {
383         machine->cpu_model = "486";
384     }
385     x86_cpu_change_kvm_default("kvm-pv-eoi", NULL);
386     enable_compat_apic_id_mode();
387     pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
388 }
389 
390 #ifdef CONFIG_XEN
391 static void pc_xen_hvm_init_pci(MachineState *machine)
392 {
393     const char *pci_type = has_igd_gfx_passthru ?
394                 TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE : TYPE_I440FX_PCI_DEVICE;
395 
396     pc_init1(machine,
397              TYPE_I440FX_PCI_HOST_BRIDGE,
398              pci_type);
399 }
400 
401 static void pc_xen_hvm_init(MachineState *machine)
402 {
403     PCIBus *bus;
404 
405     if (!xen_enabled()) {
406         error_report("xenfv machine requires the xen accelerator");
407         exit(1);
408     }
409 
410     pc_xen_hvm_init_pci(machine);
411 
412     bus = pci_find_primary_bus();
413     if (bus != NULL) {
414         pci_create_simple(bus, -1, "xen-platform");
415     }
416 }
417 #endif
418 
419 #define DEFINE_I440FX_MACHINE(suffix, name, compatfn, optionfn) \
420     static void pc_init_##suffix(MachineState *machine) \
421     { \
422         void (*compat)(MachineState *m) = (compatfn); \
423         if (compat) { \
424             compat(machine); \
425         } \
426         pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, \
427                  TYPE_I440FX_PCI_DEVICE); \
428     } \
429     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
430 
431 static void pc_i440fx_machine_options(MachineClass *m)
432 {
433     m->family = "pc_piix";
434     m->desc = "Standard PC (i440FX + PIIX, 1996)";
435     m->hot_add_cpu = pc_hot_add_cpu;
436     m->default_machine_opts = "firmware=bios-256k.bin";
437     m->default_display = "std";
438 }
439 
440 static void pc_i440fx_2_9_machine_options(MachineClass *m)
441 {
442     pc_i440fx_machine_options(m);
443     m->alias = "pc";
444     m->is_default = 1;
445 }
446 
447 DEFINE_I440FX_MACHINE(v2_9, "pc-i440fx-2.9", NULL,
448                       pc_i440fx_2_9_machine_options);
449 
450 static void pc_i440fx_2_8_machine_options(MachineClass *m)
451 {
452     pc_i440fx_2_9_machine_options(m);
453     m->is_default = 0;
454     m->alias = NULL;
455     SET_MACHINE_COMPAT(m, PC_COMPAT_2_8);
456 }
457 
458 DEFINE_I440FX_MACHINE(v2_8, "pc-i440fx-2.8", NULL,
459                       pc_i440fx_2_8_machine_options);
460 
461 
462 static void pc_i440fx_2_7_machine_options(MachineClass *m)
463 {
464     pc_i440fx_2_8_machine_options(m);
465     SET_MACHINE_COMPAT(m, PC_COMPAT_2_7);
466 }
467 
468 DEFINE_I440FX_MACHINE(v2_7, "pc-i440fx-2.7", NULL,
469                       pc_i440fx_2_7_machine_options);
470 
471 
472 static void pc_i440fx_2_6_machine_options(MachineClass *m)
473 {
474     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
475     pc_i440fx_2_7_machine_options(m);
476     pcmc->legacy_cpu_hotplug = true;
477     SET_MACHINE_COMPAT(m, PC_COMPAT_2_6);
478 }
479 
480 DEFINE_I440FX_MACHINE(v2_6, "pc-i440fx-2.6", NULL,
481                       pc_i440fx_2_6_machine_options);
482 
483 
484 static void pc_i440fx_2_5_machine_options(MachineClass *m)
485 {
486     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
487     pc_i440fx_2_6_machine_options(m);
488     pcmc->save_tsc_khz = false;
489     m->legacy_fw_cfg_order = 1;
490     SET_MACHINE_COMPAT(m, PC_COMPAT_2_5);
491 }
492 
493 DEFINE_I440FX_MACHINE(v2_5, "pc-i440fx-2.5", NULL,
494                       pc_i440fx_2_5_machine_options);
495 
496 
497 static void pc_i440fx_2_4_machine_options(MachineClass *m)
498 {
499     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
500     pc_i440fx_2_5_machine_options(m);
501     m->hw_version = "2.4.0";
502     pcmc->broken_reserved_end = true;
503     SET_MACHINE_COMPAT(m, PC_COMPAT_2_4);
504 }
505 
506 DEFINE_I440FX_MACHINE(v2_4, "pc-i440fx-2.4", NULL,
507                       pc_i440fx_2_4_machine_options)
508 
509 
510 static void pc_i440fx_2_3_machine_options(MachineClass *m)
511 {
512     pc_i440fx_2_4_machine_options(m);
513     m->hw_version = "2.3.0";
514     SET_MACHINE_COMPAT(m, PC_COMPAT_2_3);
515 }
516 
517 DEFINE_I440FX_MACHINE(v2_3, "pc-i440fx-2.3", pc_compat_2_3,
518                       pc_i440fx_2_3_machine_options);
519 
520 
521 static void pc_i440fx_2_2_machine_options(MachineClass *m)
522 {
523     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
524     pc_i440fx_2_3_machine_options(m);
525     m->hw_version = "2.2.0";
526     SET_MACHINE_COMPAT(m, PC_COMPAT_2_2);
527     pcmc->rsdp_in_ram = false;
528 }
529 
530 DEFINE_I440FX_MACHINE(v2_2, "pc-i440fx-2.2", pc_compat_2_2,
531                       pc_i440fx_2_2_machine_options);
532 
533 
534 static void pc_i440fx_2_1_machine_options(MachineClass *m)
535 {
536     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
537     pc_i440fx_2_2_machine_options(m);
538     m->hw_version = "2.1.0";
539     m->default_display = NULL;
540     SET_MACHINE_COMPAT(m, PC_COMPAT_2_1);
541     pcmc->smbios_uuid_encoded = false;
542     pcmc->enforce_aligned_dimm = false;
543 }
544 
545 DEFINE_I440FX_MACHINE(v2_1, "pc-i440fx-2.1", pc_compat_2_1,
546                       pc_i440fx_2_1_machine_options);
547 
548 
549 
550 static void pc_i440fx_2_0_machine_options(MachineClass *m)
551 {
552     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
553     pc_i440fx_2_1_machine_options(m);
554     m->hw_version = "2.0.0";
555     SET_MACHINE_COMPAT(m, PC_COMPAT_2_0);
556     pcmc->smbios_legacy_mode = true;
557     pcmc->has_reserved_memory = false;
558     /* This value depends on the actual DSDT and SSDT compiled into
559      * the source QEMU; unfortunately it depends on the binary and
560      * not on the machine type, so we cannot make pc-i440fx-1.7 work on
561      * both QEMU 1.7 and QEMU 2.0.
562      *
563      * Large variations cause migration to fail for more than one
564      * consecutive value of the "-smp" maxcpus option.
565      *
566      * For small variations of the kind caused by different iasl versions,
567      * the 4k rounding usually leaves slack.  However, there could be still
568      * one or two values that break.  For QEMU 1.7 and QEMU 2.0 the
569      * slack is only ~10 bytes before one "-smp maxcpus" value breaks!
570      *
571      * 6652 is valid for QEMU 2.0, the right value for pc-i440fx-1.7 on
572      * QEMU 1.7 it is 6414.  For RHEL/CentOS 7.0 it is 6418.
573      */
574     pcmc->legacy_acpi_table_size = 6652;
575     pcmc->acpi_data_size = 0x10000;
576 }
577 
578 DEFINE_I440FX_MACHINE(v2_0, "pc-i440fx-2.0", pc_compat_2_0,
579                       pc_i440fx_2_0_machine_options);
580 
581 
582 static void pc_i440fx_1_7_machine_options(MachineClass *m)
583 {
584     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
585     pc_i440fx_2_0_machine_options(m);
586     m->hw_version = "1.7.0";
587     m->default_machine_opts = NULL;
588     m->option_rom_has_mr = true;
589     SET_MACHINE_COMPAT(m, PC_COMPAT_1_7);
590     pcmc->smbios_defaults = false;
591     pcmc->gigabyte_align = false;
592     pcmc->legacy_acpi_table_size = 6414;
593 }
594 
595 DEFINE_I440FX_MACHINE(v1_7, "pc-i440fx-1.7", pc_compat_1_7,
596                       pc_i440fx_1_7_machine_options);
597 
598 
599 static void pc_i440fx_1_6_machine_options(MachineClass *m)
600 {
601     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
602     pc_i440fx_1_7_machine_options(m);
603     m->hw_version = "1.6.0";
604     m->rom_file_has_mr = false;
605     SET_MACHINE_COMPAT(m, PC_COMPAT_1_6);
606     pcmc->has_acpi_build = false;
607 }
608 
609 DEFINE_I440FX_MACHINE(v1_6, "pc-i440fx-1.6", pc_compat_1_6,
610                       pc_i440fx_1_6_machine_options);
611 
612 
613 static void pc_i440fx_1_5_machine_options(MachineClass *m)
614 {
615     pc_i440fx_1_6_machine_options(m);
616     m->hw_version = "1.5.0";
617     SET_MACHINE_COMPAT(m, PC_COMPAT_1_5);
618 }
619 
620 DEFINE_I440FX_MACHINE(v1_5, "pc-i440fx-1.5", pc_compat_1_5,
621                       pc_i440fx_1_5_machine_options);
622 
623 
624 static void pc_i440fx_1_4_machine_options(MachineClass *m)
625 {
626     pc_i440fx_1_5_machine_options(m);
627     m->hw_version = "1.4.0";
628     m->hot_add_cpu = NULL;
629     SET_MACHINE_COMPAT(m, PC_COMPAT_1_4);
630 }
631 
632 DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4,
633                       pc_i440fx_1_4_machine_options);
634 
635 
636 #define PC_COMPAT_1_3 \
637         PC_CPU_MODEL_IDS("1.3.0") \
638         {\
639             .driver   = "usb-tablet",\
640             .property = "usb_version",\
641             .value    = stringify(1),\
642         },{\
643             .driver   = "virtio-net-pci",\
644             .property = "ctrl_mac_addr",\
645             .value    = "off",      \
646         },{ \
647             .driver   = "virtio-net-pci", \
648             .property = "mq", \
649             .value    = "off", \
650         }, {\
651             .driver   = "e1000",\
652             .property = "autonegotiation",\
653             .value    = "off",\
654         },
655 
656 
657 static void pc_i440fx_1_3_machine_options(MachineClass *m)
658 {
659     pc_i440fx_1_4_machine_options(m);
660     m->hw_version = "1.3.0";
661     SET_MACHINE_COMPAT(m, PC_COMPAT_1_3);
662 }
663 
664 DEFINE_I440FX_MACHINE(v1_3, "pc-1.3", pc_compat_1_3,
665                       pc_i440fx_1_3_machine_options);
666 
667 
668 #define PC_COMPAT_1_2 \
669         PC_CPU_MODEL_IDS("1.2.0") \
670         {\
671             .driver   = "nec-usb-xhci",\
672             .property = "msi",\
673             .value    = "off",\
674         },{\
675             .driver   = "nec-usb-xhci",\
676             .property = "msix",\
677             .value    = "off",\
678         },{\
679             .driver   = "ivshmem",\
680             .property = "use64",\
681             .value    = "0",\
682         },{\
683             .driver   = "qxl",\
684             .property = "revision",\
685             .value    = stringify(3),\
686         },{\
687             .driver   = "qxl-vga",\
688             .property = "revision",\
689             .value    = stringify(3),\
690         },{\
691             .driver   = "VGA",\
692             .property = "mmio",\
693             .value    = "off",\
694         },
695 
696 static void pc_i440fx_1_2_machine_options(MachineClass *m)
697 {
698     pc_i440fx_1_3_machine_options(m);
699     m->hw_version = "1.2.0";
700     SET_MACHINE_COMPAT(m, PC_COMPAT_1_2);
701 }
702 
703 DEFINE_I440FX_MACHINE(v1_2, "pc-1.2", pc_compat_1_2,
704                       pc_i440fx_1_2_machine_options);
705 
706 
707 #define PC_COMPAT_1_1 \
708         PC_CPU_MODEL_IDS("1.1.0") \
709         {\
710             .driver   = "virtio-scsi-pci",\
711             .property = "hotplug",\
712             .value    = "off",\
713         },{\
714             .driver   = "virtio-scsi-pci",\
715             .property = "param_change",\
716             .value    = "off",\
717         },{\
718             .driver   = "VGA",\
719             .property = "vgamem_mb",\
720             .value    = stringify(8),\
721         },{\
722             .driver   = "vmware-svga",\
723             .property = "vgamem_mb",\
724             .value    = stringify(8),\
725         },{\
726             .driver   = "qxl-vga",\
727             .property = "vgamem_mb",\
728             .value    = stringify(8),\
729         },{\
730             .driver   = "qxl",\
731             .property = "vgamem_mb",\
732             .value    = stringify(8),\
733         },{\
734             .driver   = "virtio-blk-pci",\
735             .property = "config-wce",\
736             .value    = "off",\
737         },
738 
739 static void pc_i440fx_1_1_machine_options(MachineClass *m)
740 {
741     pc_i440fx_1_2_machine_options(m);
742     m->hw_version = "1.1.0";
743     SET_MACHINE_COMPAT(m, PC_COMPAT_1_1);
744 }
745 
746 DEFINE_I440FX_MACHINE(v1_1, "pc-1.1", pc_compat_1_2,
747                       pc_i440fx_1_1_machine_options);
748 
749 
750 #define PC_COMPAT_1_0 \
751         PC_CPU_MODEL_IDS("1.0") \
752         {\
753             .driver   = TYPE_ISA_FDC,\
754             .property = "check_media_rate",\
755             .value    = "off",\
756         }, {\
757             .driver   = "virtio-balloon-pci",\
758             .property = "class",\
759             .value    = stringify(PCI_CLASS_MEMORY_RAM),\
760         },{\
761             .driver   = "apic-common",\
762             .property = "vapic",\
763             .value    = "off",\
764         },{\
765             .driver   = TYPE_USB_DEVICE,\
766             .property = "full-path",\
767             .value    = "no",\
768         },
769 
770 static void pc_i440fx_1_0_machine_options(MachineClass *m)
771 {
772     pc_i440fx_1_1_machine_options(m);
773     m->hw_version = "1.0";
774     SET_MACHINE_COMPAT(m, PC_COMPAT_1_0);
775 }
776 
777 DEFINE_I440FX_MACHINE(v1_0, "pc-1.0", pc_compat_1_2,
778                       pc_i440fx_1_0_machine_options);
779 
780 
781 #define PC_COMPAT_0_15 \
782         PC_CPU_MODEL_IDS("0.15")
783 
784 static void pc_i440fx_0_15_machine_options(MachineClass *m)
785 {
786     pc_i440fx_1_0_machine_options(m);
787     m->hw_version = "0.15";
788     SET_MACHINE_COMPAT(m, PC_COMPAT_0_15);
789 }
790 
791 DEFINE_I440FX_MACHINE(v0_15, "pc-0.15", pc_compat_1_2,
792                       pc_i440fx_0_15_machine_options);
793 
794 
795 #define PC_COMPAT_0_14 \
796         PC_CPU_MODEL_IDS("0.14") \
797         {\
798             .driver   = "virtio-blk-pci",\
799             .property = "event_idx",\
800             .value    = "off",\
801         },{\
802             .driver   = "virtio-serial-pci",\
803             .property = "event_idx",\
804             .value    = "off",\
805         },{\
806             .driver   = "virtio-net-pci",\
807             .property = "event_idx",\
808             .value    = "off",\
809         },{\
810             .driver   = "virtio-balloon-pci",\
811             .property = "event_idx",\
812             .value    = "off",\
813         },{\
814             .driver   = "qxl",\
815             .property = "revision",\
816             .value    = stringify(2),\
817         },{\
818             .driver   = "qxl-vga",\
819             .property = "revision",\
820             .value    = stringify(2),\
821         },
822 
823 static void pc_i440fx_0_14_machine_options(MachineClass *m)
824 {
825     pc_i440fx_0_15_machine_options(m);
826     m->hw_version = "0.14";
827     SET_MACHINE_COMPAT(m, PC_COMPAT_0_14);
828 }
829 
830 DEFINE_I440FX_MACHINE(v0_14, "pc-0.14", pc_compat_1_2,
831                       pc_i440fx_0_14_machine_options);
832 
833 
834 #define PC_COMPAT_0_13 \
835         PC_CPU_MODEL_IDS("0.13") \
836         {\
837             .driver   = TYPE_PCI_DEVICE,\
838             .property = "command_serr_enable",\
839             .value    = "off",\
840         },{\
841             .driver   = "AC97",\
842             .property = "use_broken_id",\
843             .value    = stringify(1),\
844         },{\
845             .driver   = "virtio-9p-pci",\
846             .property = "vectors",\
847             .value    = stringify(0),\
848         },{\
849             .driver   = "VGA",\
850             .property = "rombar",\
851             .value    = stringify(0),\
852         },{\
853             .driver   = "vmware-svga",\
854             .property = "rombar",\
855             .value    = stringify(0),\
856         },
857 
858 static void pc_i440fx_0_13_machine_options(MachineClass *m)
859 {
860     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
861     pc_i440fx_0_14_machine_options(m);
862     m->hw_version = "0.13";
863     SET_MACHINE_COMPAT(m, PC_COMPAT_0_13);
864     pcmc->kvmclock_enabled = false;
865 }
866 
867 DEFINE_I440FX_MACHINE(v0_13, "pc-0.13", pc_compat_0_13,
868                       pc_i440fx_0_13_machine_options);
869 
870 
871 #define PC_COMPAT_0_12 \
872         PC_CPU_MODEL_IDS("0.12") \
873         {\
874             .driver   = "virtio-serial-pci",\
875             .property = "max_ports",\
876             .value    = stringify(1),\
877         },{\
878             .driver   = "virtio-serial-pci",\
879             .property = "vectors",\
880             .value    = stringify(0),\
881         },{\
882             .driver   = "usb-mouse",\
883             .property = "serial",\
884             .value    = "1",\
885         },{\
886             .driver   = "usb-tablet",\
887             .property = "serial",\
888             .value    = "1",\
889         },{\
890             .driver   = "usb-kbd",\
891             .property = "serial",\
892             .value    = "1",\
893         },
894 
895 static void pc_i440fx_0_12_machine_options(MachineClass *m)
896 {
897     pc_i440fx_0_13_machine_options(m);
898     m->hw_version = "0.12";
899     SET_MACHINE_COMPAT(m, PC_COMPAT_0_12);
900 }
901 
902 DEFINE_I440FX_MACHINE(v0_12, "pc-0.12", pc_compat_0_13,
903                       pc_i440fx_0_12_machine_options);
904 
905 
906 #define PC_COMPAT_0_11 \
907         PC_CPU_MODEL_IDS("0.11") \
908         {\
909             .driver   = "virtio-blk-pci",\
910             .property = "vectors",\
911             .value    = stringify(0),\
912         },{\
913             .driver   = TYPE_PCI_DEVICE,\
914             .property = "rombar",\
915             .value    = stringify(0),\
916         },{\
917             .driver   = "ide-drive",\
918             .property = "ver",\
919             .value    = "0.11",\
920         },{\
921             .driver   = "scsi-disk",\
922             .property = "ver",\
923             .value    = "0.11",\
924         },
925 
926 static void pc_i440fx_0_11_machine_options(MachineClass *m)
927 {
928     pc_i440fx_0_12_machine_options(m);
929     m->hw_version = "0.11";
930     SET_MACHINE_COMPAT(m, PC_COMPAT_0_11);
931 }
932 
933 DEFINE_I440FX_MACHINE(v0_11, "pc-0.11", pc_compat_0_13,
934                       pc_i440fx_0_11_machine_options);
935 
936 
937 #define PC_COMPAT_0_10 \
938     PC_CPU_MODEL_IDS("0.10") \
939     {\
940         .driver   = "virtio-blk-pci",\
941         .property = "class",\
942         .value    = stringify(PCI_CLASS_STORAGE_OTHER),\
943     },{\
944         .driver   = "virtio-serial-pci",\
945         .property = "class",\
946         .value    = stringify(PCI_CLASS_DISPLAY_OTHER),\
947     },{\
948         .driver   = "virtio-net-pci",\
949         .property = "vectors",\
950         .value    = stringify(0),\
951     },{\
952         .driver   = "ide-drive",\
953         .property = "ver",\
954         .value    = "0.10",\
955     },{\
956         .driver   = "scsi-disk",\
957         .property = "ver",\
958         .value    = "0.10",\
959     },
960 
961 static void pc_i440fx_0_10_machine_options(MachineClass *m)
962 {
963     pc_i440fx_0_11_machine_options(m);
964     m->hw_version = "0.10";
965     SET_MACHINE_COMPAT(m, PC_COMPAT_0_10);
966 }
967 
968 DEFINE_I440FX_MACHINE(v0_10, "pc-0.10", pc_compat_0_13,
969                       pc_i440fx_0_10_machine_options);
970 
971 typedef struct {
972     uint16_t gpu_device_id;
973     uint16_t pch_device_id;
974     uint8_t pch_revision_id;
975 } IGDDeviceIDInfo;
976 
977 /* In real world different GPU should have different PCH. But actually
978  * the different PCH DIDs likely map to different PCH SKUs. We do the
979  * same thing for the GPU. For PCH, the different SKUs are going to be
980  * all the same silicon design and implementation, just different
981  * features turn on and off with fuses. The SW interfaces should be
982  * consistent across all SKUs in a given family (eg LPT). But just same
983  * features may not be supported.
984  *
985  * Most of these different PCH features probably don't matter to the
986  * Gfx driver, but obviously any difference in display port connections
987  * will so it should be fine with any PCH in case of passthrough.
988  *
989  * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
990  * scenarios, 0x9cc3 for BDW(Broadwell).
991  */
992 static const IGDDeviceIDInfo igd_combo_id_infos[] = {
993     /* HSW Classic */
994     {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
995     {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
996     {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
997     {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
998     {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
999     /* HSW ULT */
1000     {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
1001     {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
1002     {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
1003     {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
1004     {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
1005     {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
1006     /* HSW CRW */
1007     {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
1008     {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
1009     /* HSW Server */
1010     {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
1011     /* HSW SRVR */
1012     {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
1013     /* BSW */
1014     {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
1015     {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
1016     {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
1017     {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
1018     {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
1019     {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
1020     {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
1021     {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
1022     {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
1023     {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
1024     {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
1025 };
1026 
1027 static void isa_bridge_class_init(ObjectClass *klass, void *data)
1028 {
1029     DeviceClass *dc = DEVICE_CLASS(klass);
1030     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1031 
1032     dc->desc        = "ISA bridge faked to support IGD PT";
1033     k->vendor_id    = PCI_VENDOR_ID_INTEL;
1034     k->class_id     = PCI_CLASS_BRIDGE_ISA;
1035 };
1036 
1037 static TypeInfo isa_bridge_info = {
1038     .name          = "igd-passthrough-isa-bridge",
1039     .parent        = TYPE_PCI_DEVICE,
1040     .instance_size = sizeof(PCIDevice),
1041     .class_init = isa_bridge_class_init,
1042 };
1043 
1044 static void pt_graphics_register_types(void)
1045 {
1046     type_register_static(&isa_bridge_info);
1047 }
1048 type_init(pt_graphics_register_types)
1049 
1050 void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
1051 {
1052     struct PCIDevice *bridge_dev;
1053     int i, num;
1054     uint16_t pch_dev_id = 0xffff;
1055     uint8_t pch_rev_id;
1056 
1057     num = ARRAY_SIZE(igd_combo_id_infos);
1058     for (i = 0; i < num; i++) {
1059         if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
1060             pch_dev_id = igd_combo_id_infos[i].pch_device_id;
1061             pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
1062         }
1063     }
1064 
1065     if (pch_dev_id == 0xffff) {
1066         return;
1067     }
1068 
1069     /* Currently IGD drivers always need to access PCH by 1f.0. */
1070     bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
1071                                    "igd-passthrough-isa-bridge");
1072 
1073     /*
1074      * Note that vendor id is always PCI_VENDOR_ID_INTEL.
1075      */
1076     if (!bridge_dev) {
1077         fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
1078         return;
1079     }
1080     pci_config_set_device_id(bridge_dev->config, pch_dev_id);
1081     pci_config_set_revision(bridge_dev->config, pch_rev_id);
1082 }
1083 
1084 static void isapc_machine_options(MachineClass *m)
1085 {
1086     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
1087     m->desc = "ISA-only PC";
1088     m->max_cpus = 1;
1089     m->option_rom_has_mr = true;
1090     m->rom_file_has_mr = false;
1091     pcmc->pci_enabled = false;
1092     pcmc->has_acpi_build = false;
1093     pcmc->smbios_defaults = false;
1094     pcmc->gigabyte_align = false;
1095     pcmc->smbios_legacy_mode = true;
1096     pcmc->has_reserved_memory = false;
1097 }
1098 
1099 DEFINE_PC_MACHINE(isapc, "isapc", pc_init_isa,
1100                   isapc_machine_options);
1101 
1102 
1103 #ifdef CONFIG_XEN
1104 static void xenfv_machine_options(MachineClass *m)
1105 {
1106     m->desc = "Xen Fully-virtualized PC";
1107     m->max_cpus = HVM_MAX_VCPUS;
1108     m->default_machine_opts = "accel=xen";
1109     m->hot_add_cpu = pc_hot_add_cpu;
1110 }
1111 
1112 DEFINE_PC_MACHINE(xenfv, "xenfv", pc_xen_hvm_init,
1113                   xenfv_machine_options);
1114 #endif
1115