xref: /openbmc/qemu/hw/i386/pc_piix.c (revision 7acafcfa)
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 #include "config-devices.h"
27 
28 #include "qemu/units.h"
29 #include "hw/loader.h"
30 #include "hw/i386/x86.h"
31 #include "hw/i386/pc.h"
32 #include "hw/i386/apic.h"
33 #include "hw/pci-host/i440fx.h"
34 #include "hw/southbridge/piix.h"
35 #include "hw/display/ramfb.h"
36 #include "hw/firmware/smbios.h"
37 #include "hw/pci/pci.h"
38 #include "hw/pci/pci_ids.h"
39 #include "hw/usb.h"
40 #include "net/net.h"
41 #include "hw/ide/pci.h"
42 #include "hw/irq.h"
43 #include "sysemu/kvm.h"
44 #include "hw/kvm/clock.h"
45 #include "sysemu/sysemu.h"
46 #include "hw/sysbus.h"
47 #include "sysemu/arch_init.h"
48 #include "hw/i2c/smbus_eeprom.h"
49 #include "hw/xen/xen.h"
50 #include "exec/memory.h"
51 #include "exec/address-spaces.h"
52 #include "hw/acpi/acpi.h"
53 #include "cpu.h"
54 #include "qapi/error.h"
55 #include "qemu/error-report.h"
56 #include "sysemu/xen.h"
57 #ifdef CONFIG_XEN
58 #include <xen/hvm/hvm_info_table.h>
59 #include "hw/xen/xen_pt.h"
60 #endif
61 #include "migration/global_state.h"
62 #include "migration/misc.h"
63 #include "sysemu/numa.h"
64 #include "hw/hyperv/vmbus-bridge.h"
65 #include "hw/mem/nvdimm.h"
66 #include "hw/i386/acpi-build.h"
67 
68 #define MAX_IDE_BUS 2
69 
70 #ifdef CONFIG_IDE_ISA
71 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
72 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
73 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
74 #endif
75 
76 /* PC hardware initialisation */
77 static void pc_init1(MachineState *machine,
78                      const char *host_type, const char *pci_type)
79 {
80     PCMachineState *pcms = PC_MACHINE(machine);
81     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
82     X86MachineState *x86ms = X86_MACHINE(machine);
83     MemoryRegion *system_memory = get_system_memory();
84     MemoryRegion *system_io = get_system_io();
85     PCIBus *pci_bus;
86     ISABus *isa_bus;
87     PCII440FXState *i440fx_state;
88     int piix3_devfn = -1;
89     qemu_irq smi_irq;
90     GSIState *gsi_state;
91     BusState *idebus[MAX_IDE_BUS];
92     ISADevice *rtc_state;
93     MemoryRegion *ram_memory;
94     MemoryRegion *pci_memory;
95     MemoryRegion *rom_memory;
96     ram_addr_t lowmem;
97 
98     /*
99      * Calculate ram split, for memory below and above 4G.  It's a bit
100      * complicated for backward compatibility reasons ...
101      *
102      *  - Traditional split is 3.5G (lowmem = 0xe0000000).  This is the
103      *    default value for max_ram_below_4g now.
104      *
105      *  - Then, to gigabyte align the memory, we move the split to 3G
106      *    (lowmem = 0xc0000000).  But only in case we have to split in
107      *    the first place, i.e. ram_size is larger than (traditional)
108      *    lowmem.  And for new machine types (gigabyte_align = true)
109      *    only, for live migration compatibility reasons.
110      *
111      *  - Next the max-ram-below-4g option was added, which allowed to
112      *    reduce lowmem to a smaller value, to allow a larger PCI I/O
113      *    window below 4G.  qemu doesn't enforce gigabyte alignment here,
114      *    but prints a warning.
115      *
116      *  - Finally max-ram-below-4g got updated to also allow raising lowmem,
117      *    so legacy non-PAE guests can get as much memory as possible in
118      *    the 32bit address space below 4G.
119      *
120      *  - Note that Xen has its own ram setp code in xen_ram_init(),
121      *    called via xen_hvm_init().
122      *
123      * Examples:
124      *    qemu -M pc-1.7 -m 4G    (old default)    -> 3584M low,  512M high
125      *    qemu -M pc -m 4G        (new default)    -> 3072M low, 1024M high
126      *    qemu -M pc,max-ram-below-4g=2G -m 4G     -> 2048M low, 2048M high
127      *    qemu -M pc,max-ram-below-4g=4G -m 3968M  -> 3968M low (=4G-128M)
128      */
129     if (xen_enabled()) {
130         xen_hvm_init(pcms, &ram_memory);
131     } else {
132         if (!pcms->max_ram_below_4g) {
133             pcms->max_ram_below_4g = 0xe0000000; /* default: 3.5G */
134         }
135         lowmem = pcms->max_ram_below_4g;
136         if (machine->ram_size >= pcms->max_ram_below_4g) {
137             if (pcmc->gigabyte_align) {
138                 if (lowmem > 0xc0000000) {
139                     lowmem = 0xc0000000;
140                 }
141                 if (lowmem & (1 * GiB - 1)) {
142                     warn_report("Large machine and max_ram_below_4g "
143                                 "(%" PRIu64 ") not a multiple of 1G; "
144                                 "possible bad performance.",
145                                 pcms->max_ram_below_4g);
146                 }
147             }
148         }
149 
150         if (machine->ram_size >= lowmem) {
151             x86ms->above_4g_mem_size = machine->ram_size - lowmem;
152             x86ms->below_4g_mem_size = lowmem;
153         } else {
154             x86ms->above_4g_mem_size = 0;
155             x86ms->below_4g_mem_size = machine->ram_size;
156         }
157     }
158 
159     x86_cpus_init(x86ms, pcmc->default_cpu_version);
160 
161     if (kvm_enabled() && pcmc->kvmclock_enabled) {
162         kvmclock_create();
163     }
164 
165     if (pcmc->pci_enabled) {
166         pci_memory = g_new(MemoryRegion, 1);
167         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
168         rom_memory = pci_memory;
169     } else {
170         pci_memory = NULL;
171         rom_memory = system_memory;
172     }
173 
174     pc_guest_info_init(pcms);
175 
176     if (pcmc->smbios_defaults) {
177         MachineClass *mc = MACHINE_GET_CLASS(machine);
178         /* These values are guest ABI, do not change */
179         smbios_set_defaults("QEMU", "Standard PC (i440FX + PIIX, 1996)",
180                             mc->name, pcmc->smbios_legacy_mode,
181                             pcmc->smbios_uuid_encoded,
182                             SMBIOS_ENTRY_POINT_21);
183     }
184 
185     /* allocate ram and load rom/bios */
186     if (!xen_enabled()) {
187         pc_memory_init(pcms, system_memory,
188                        rom_memory, &ram_memory);
189     } else {
190         pc_system_flash_cleanup_unused(pcms);
191         if (machine->kernel_filename != NULL) {
192             /* For xen HVM direct kernel boot, load linux here */
193             xen_load_linux(pcms);
194         }
195     }
196 
197     gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
198 
199     if (pcmc->pci_enabled) {
200         PIIX3State *piix3;
201 
202         pci_bus = i440fx_init(host_type,
203                               pci_type,
204                               &i440fx_state,
205                               system_memory, system_io, machine->ram_size,
206                               x86ms->below_4g_mem_size,
207                               x86ms->above_4g_mem_size,
208                               pci_memory, ram_memory);
209         pcms->bus = pci_bus;
210 
211         piix3 = piix3_create(pci_bus, &isa_bus);
212         piix3->pic = x86ms->gsi;
213         piix3_devfn = piix3->dev.devfn;
214     } else {
215         pci_bus = NULL;
216         i440fx_state = NULL;
217         isa_bus = isa_bus_new(NULL, get_system_memory(), system_io,
218                               &error_abort);
219         no_hpet = 1;
220     }
221     isa_bus_irqs(isa_bus, x86ms->gsi);
222 
223     pc_i8259_create(isa_bus, gsi_state->i8259_irq);
224 
225     if (pcmc->pci_enabled) {
226         ioapic_init_gsi(gsi_state, "i440fx");
227     }
228 
229     if (tcg_enabled()) {
230         x86_register_ferr_irq(x86ms->gsi[13]);
231     }
232 
233     pc_vga_init(isa_bus, pcmc->pci_enabled ? pci_bus : NULL);
234 
235     assert(pcms->vmport != ON_OFF_AUTO__MAX);
236     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
237         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
238     }
239 
240     /* init basic PC hardware */
241     pc_basic_device_init(pcms, isa_bus, x86ms->gsi, &rtc_state, true,
242                          0x4);
243 
244     pc_nic_init(pcmc, isa_bus, pci_bus);
245 
246     if (pcmc->pci_enabled) {
247         PCIDevice *dev;
248 
249         dev = pci_create_simple(pci_bus, piix3_devfn + 1,
250                                 xen_enabled() ? "piix3-ide-xen" : "piix3-ide");
251         pci_ide_create_devs(dev);
252         idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
253         idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
254         pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
255     }
256 #ifdef CONFIG_IDE_ISA
257     else {
258         DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
259         int i;
260 
261         ide_drive_get(hd, ARRAY_SIZE(hd));
262         for (i = 0; i < MAX_IDE_BUS; i++) {
263             ISADevice *dev;
264             char busname[] = "ide.0";
265             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
266                                ide_irq[i],
267                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
268             /*
269              * The ide bus name is ide.0 for the first bus and ide.1 for the
270              * second one.
271              */
272             busname[4] = '0' + i;
273             idebus[i] = qdev_get_child_bus(DEVICE(dev), busname);
274         }
275         pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
276     }
277 #endif
278 
279     if (pcmc->pci_enabled && machine_usb(machine)) {
280         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
281     }
282 
283     if (pcmc->pci_enabled && x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
284         DeviceState *piix4_pm;
285 
286         smi_irq = qemu_allocate_irq(pc_acpi_smi_interrupt, first_cpu, 0);
287         /* TODO: Populate SPD eeprom data.  */
288         pcms->smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
289                                     x86ms->gsi[9], smi_irq,
290                                     x86_machine_is_smm_enabled(x86ms),
291                                     &piix4_pm);
292         smbus_eeprom_init(pcms->smbus, 8, NULL, 0);
293 
294         object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
295                                  TYPE_HOTPLUG_HANDLER,
296                                  (Object **)&pcms->acpi_dev,
297                                  object_property_allow_set_link,
298                                  OBJ_PROP_LINK_STRONG);
299         object_property_set_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
300                                  OBJECT(piix4_pm), &error_abort);
301     }
302 
303     if (machine->nvdimms_state->is_enabled) {
304         nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
305                                x86_nvdimm_acpi_dsmio,
306                                x86ms->fw_cfg, OBJECT(pcms));
307     }
308 }
309 
310 /* Looking for a pc_compat_2_4() function? It doesn't exist.
311  * pc_compat_*() functions that run on machine-init time and
312  * change global QEMU state are deprecated. Please don't create
313  * one, and implement any pc-*-2.4 (and newer) compat code in
314  * hw_compat_*, pc_compat_*, or * pc_*_machine_options().
315  */
316 
317 static void pc_compat_2_3_fn(MachineState *machine)
318 {
319     X86MachineState *x86ms = X86_MACHINE(machine);
320     if (kvm_enabled()) {
321         x86ms->smm = ON_OFF_AUTO_OFF;
322     }
323 }
324 
325 static void pc_compat_2_2_fn(MachineState *machine)
326 {
327     pc_compat_2_3_fn(machine);
328 }
329 
330 static void pc_compat_2_1_fn(MachineState *machine)
331 {
332     pc_compat_2_2_fn(machine);
333     x86_cpu_change_kvm_default("svm", NULL);
334 }
335 
336 static void pc_compat_2_0_fn(MachineState *machine)
337 {
338     pc_compat_2_1_fn(machine);
339 }
340 
341 static void pc_compat_1_7_fn(MachineState *machine)
342 {
343     pc_compat_2_0_fn(machine);
344     x86_cpu_change_kvm_default("x2apic", NULL);
345 }
346 
347 static void pc_compat_1_6_fn(MachineState *machine)
348 {
349     pc_compat_1_7_fn(machine);
350 }
351 
352 static void pc_compat_1_5_fn(MachineState *machine)
353 {
354     pc_compat_1_6_fn(machine);
355 }
356 
357 static void pc_compat_1_4_fn(MachineState *machine)
358 {
359     pc_compat_1_5_fn(machine);
360 }
361 
362 static void pc_compat_1_3(MachineState *machine)
363 {
364     pc_compat_1_4_fn(machine);
365 }
366 
367 /* PC compat function for pc-1.0 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 static void pc_init_isa(MachineState *machine)
375 {
376     pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
377 }
378 
379 #ifdef CONFIG_XEN
380 static void pc_xen_hvm_init_pci(MachineState *machine)
381 {
382     const char *pci_type = xen_igd_gfx_pt_enabled() ?
383                 TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE : TYPE_I440FX_PCI_DEVICE;
384 
385     pc_init1(machine,
386              TYPE_I440FX_PCI_HOST_BRIDGE,
387              pci_type);
388 }
389 
390 static void pc_xen_hvm_init(MachineState *machine)
391 {
392     PCMachineState *pcms = PC_MACHINE(machine);
393 
394     if (!xen_enabled()) {
395         error_report("xenfv machine requires the xen accelerator");
396         exit(1);
397     }
398 
399     pc_xen_hvm_init_pci(machine);
400     pci_create_simple(pcms->bus, -1, "xen-platform");
401 }
402 #endif
403 
404 #define DEFINE_I440FX_MACHINE(suffix, name, compatfn, optionfn) \
405     static void pc_init_##suffix(MachineState *machine) \
406     { \
407         void (*compat)(MachineState *m) = (compatfn); \
408         if (compat) { \
409             compat(machine); \
410         } \
411         pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, \
412                  TYPE_I440FX_PCI_DEVICE); \
413     } \
414     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
415 
416 static void pc_i440fx_machine_options(MachineClass *m)
417 {
418     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
419     pcmc->default_nic_model = "e1000";
420 
421     m->family = "pc_piix";
422     m->desc = "Standard PC (i440FX + PIIX, 1996)";
423     m->default_machine_opts = "firmware=bios-256k.bin";
424     m->default_display = "std";
425     machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
426     machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
427 }
428 
429 static void pc_i440fx_5_1_machine_options(MachineClass *m)
430 {
431     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
432     pc_i440fx_machine_options(m);
433     m->alias = "pc";
434     m->is_default = true;
435     pcmc->default_cpu_version = 1;
436 }
437 
438 DEFINE_I440FX_MACHINE(v5_1, "pc-i440fx-5.1", NULL,
439                       pc_i440fx_5_1_machine_options);
440 
441 static void pc_i440fx_5_0_machine_options(MachineClass *m)
442 {
443     pc_i440fx_5_1_machine_options(m);
444     m->alias = NULL;
445     m->is_default = false;
446     m->numa_mem_supported = true;
447     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
448     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
449     m->auto_enable_numa_with_memdev = false;
450 }
451 
452 DEFINE_I440FX_MACHINE(v5_0, "pc-i440fx-5.0", NULL,
453                       pc_i440fx_5_0_machine_options);
454 
455 static void pc_i440fx_4_2_machine_options(MachineClass *m)
456 {
457     pc_i440fx_5_0_machine_options(m);
458     m->alias = NULL;
459     m->is_default = false;
460     compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
461     compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
462 }
463 
464 DEFINE_I440FX_MACHINE(v4_2, "pc-i440fx-4.2", NULL,
465                       pc_i440fx_4_2_machine_options);
466 
467 static void pc_i440fx_4_1_machine_options(MachineClass *m)
468 {
469     pc_i440fx_4_2_machine_options(m);
470     m->alias = NULL;
471     m->is_default = false;
472     compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
473     compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
474 }
475 
476 DEFINE_I440FX_MACHINE(v4_1, "pc-i440fx-4.1", NULL,
477                       pc_i440fx_4_1_machine_options);
478 
479 static void pc_i440fx_4_0_machine_options(MachineClass *m)
480 {
481     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
482     pc_i440fx_4_1_machine_options(m);
483     m->alias = NULL;
484     m->is_default = false;
485     pcmc->default_cpu_version = CPU_VERSION_LEGACY;
486     compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len);
487     compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len);
488 }
489 
490 DEFINE_I440FX_MACHINE(v4_0, "pc-i440fx-4.0", NULL,
491                       pc_i440fx_4_0_machine_options);
492 
493 static void pc_i440fx_3_1_machine_options(MachineClass *m)
494 {
495     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
496 
497     pc_i440fx_4_0_machine_options(m);
498     m->is_default = false;
499     pcmc->do_not_add_smb_acpi = true;
500     m->smbus_no_migration_support = true;
501     m->alias = NULL;
502     pcmc->pvh_enabled = false;
503     compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
504     compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
505 }
506 
507 DEFINE_I440FX_MACHINE(v3_1, "pc-i440fx-3.1", NULL,
508                       pc_i440fx_3_1_machine_options);
509 
510 static void pc_i440fx_3_0_machine_options(MachineClass *m)
511 {
512     pc_i440fx_3_1_machine_options(m);
513     compat_props_add(m->compat_props, hw_compat_3_0, hw_compat_3_0_len);
514     compat_props_add(m->compat_props, pc_compat_3_0, pc_compat_3_0_len);
515 }
516 
517 DEFINE_I440FX_MACHINE(v3_0, "pc-i440fx-3.0", NULL,
518                       pc_i440fx_3_0_machine_options);
519 
520 static void pc_i440fx_2_12_machine_options(MachineClass *m)
521 {
522     pc_i440fx_3_0_machine_options(m);
523     compat_props_add(m->compat_props, hw_compat_2_12, hw_compat_2_12_len);
524     compat_props_add(m->compat_props, pc_compat_2_12, pc_compat_2_12_len);
525 }
526 
527 DEFINE_I440FX_MACHINE(v2_12, "pc-i440fx-2.12", NULL,
528                       pc_i440fx_2_12_machine_options);
529 
530 static void pc_i440fx_2_11_machine_options(MachineClass *m)
531 {
532     pc_i440fx_2_12_machine_options(m);
533     compat_props_add(m->compat_props, hw_compat_2_11, hw_compat_2_11_len);
534     compat_props_add(m->compat_props, pc_compat_2_11, pc_compat_2_11_len);
535 }
536 
537 DEFINE_I440FX_MACHINE(v2_11, "pc-i440fx-2.11", NULL,
538                       pc_i440fx_2_11_machine_options);
539 
540 static void pc_i440fx_2_10_machine_options(MachineClass *m)
541 {
542     pc_i440fx_2_11_machine_options(m);
543     compat_props_add(m->compat_props, hw_compat_2_10, hw_compat_2_10_len);
544     compat_props_add(m->compat_props, pc_compat_2_10, pc_compat_2_10_len);
545     m->auto_enable_numa_with_memhp = false;
546 }
547 
548 DEFINE_I440FX_MACHINE(v2_10, "pc-i440fx-2.10", NULL,
549                       pc_i440fx_2_10_machine_options);
550 
551 static void pc_i440fx_2_9_machine_options(MachineClass *m)
552 {
553     pc_i440fx_2_10_machine_options(m);
554     compat_props_add(m->compat_props, hw_compat_2_9, hw_compat_2_9_len);
555     compat_props_add(m->compat_props, pc_compat_2_9, pc_compat_2_9_len);
556     m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
557 }
558 
559 DEFINE_I440FX_MACHINE(v2_9, "pc-i440fx-2.9", NULL,
560                       pc_i440fx_2_9_machine_options);
561 
562 static void pc_i440fx_2_8_machine_options(MachineClass *m)
563 {
564     pc_i440fx_2_9_machine_options(m);
565     compat_props_add(m->compat_props, hw_compat_2_8, hw_compat_2_8_len);
566     compat_props_add(m->compat_props, pc_compat_2_8, pc_compat_2_8_len);
567 }
568 
569 DEFINE_I440FX_MACHINE(v2_8, "pc-i440fx-2.8", NULL,
570                       pc_i440fx_2_8_machine_options);
571 
572 static void pc_i440fx_2_7_machine_options(MachineClass *m)
573 {
574     pc_i440fx_2_8_machine_options(m);
575     compat_props_add(m->compat_props, hw_compat_2_7, hw_compat_2_7_len);
576     compat_props_add(m->compat_props, pc_compat_2_7, pc_compat_2_7_len);
577 }
578 
579 DEFINE_I440FX_MACHINE(v2_7, "pc-i440fx-2.7", NULL,
580                       pc_i440fx_2_7_machine_options);
581 
582 static void pc_i440fx_2_6_machine_options(MachineClass *m)
583 {
584     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
585 
586     pc_i440fx_2_7_machine_options(m);
587     pcmc->legacy_cpu_hotplug = true;
588     pcmc->linuxboot_dma_enabled = false;
589     compat_props_add(m->compat_props, hw_compat_2_6, hw_compat_2_6_len);
590     compat_props_add(m->compat_props, pc_compat_2_6, pc_compat_2_6_len);
591 }
592 
593 DEFINE_I440FX_MACHINE(v2_6, "pc-i440fx-2.6", NULL,
594                       pc_i440fx_2_6_machine_options);
595 
596 static void pc_i440fx_2_5_machine_options(MachineClass *m)
597 {
598     X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
599 
600     pc_i440fx_2_6_machine_options(m);
601     x86mc->save_tsc_khz = false;
602     m->legacy_fw_cfg_order = 1;
603     compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
604     compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
605 }
606 
607 DEFINE_I440FX_MACHINE(v2_5, "pc-i440fx-2.5", NULL,
608                       pc_i440fx_2_5_machine_options);
609 
610 static void pc_i440fx_2_4_machine_options(MachineClass *m)
611 {
612     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
613 
614     pc_i440fx_2_5_machine_options(m);
615     m->hw_version = "2.4.0";
616     pcmc->broken_reserved_end = true;
617     compat_props_add(m->compat_props, hw_compat_2_4, hw_compat_2_4_len);
618     compat_props_add(m->compat_props, pc_compat_2_4, pc_compat_2_4_len);
619 }
620 
621 DEFINE_I440FX_MACHINE(v2_4, "pc-i440fx-2.4", NULL,
622                       pc_i440fx_2_4_machine_options)
623 
624 static void pc_i440fx_2_3_machine_options(MachineClass *m)
625 {
626     pc_i440fx_2_4_machine_options(m);
627     m->hw_version = "2.3.0";
628     compat_props_add(m->compat_props, hw_compat_2_3, hw_compat_2_3_len);
629     compat_props_add(m->compat_props, pc_compat_2_3, pc_compat_2_3_len);
630 }
631 
632 DEFINE_I440FX_MACHINE(v2_3, "pc-i440fx-2.3", pc_compat_2_3_fn,
633                       pc_i440fx_2_3_machine_options);
634 
635 static void pc_i440fx_2_2_machine_options(MachineClass *m)
636 {
637     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
638 
639     pc_i440fx_2_3_machine_options(m);
640     m->hw_version = "2.2.0";
641     m->default_machine_opts = "firmware=bios-256k.bin,suppress-vmdesc=on";
642     compat_props_add(m->compat_props, hw_compat_2_2, hw_compat_2_2_len);
643     compat_props_add(m->compat_props, pc_compat_2_2, pc_compat_2_2_len);
644     pcmc->rsdp_in_ram = false;
645 }
646 
647 DEFINE_I440FX_MACHINE(v2_2, "pc-i440fx-2.2", pc_compat_2_2_fn,
648                       pc_i440fx_2_2_machine_options);
649 
650 static void pc_i440fx_2_1_machine_options(MachineClass *m)
651 {
652     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
653 
654     pc_i440fx_2_2_machine_options(m);
655     m->hw_version = "2.1.0";
656     m->default_display = NULL;
657     compat_props_add(m->compat_props, hw_compat_2_1, hw_compat_2_1_len);
658     compat_props_add(m->compat_props, pc_compat_2_1, pc_compat_2_1_len);
659     pcmc->smbios_uuid_encoded = false;
660     pcmc->enforce_aligned_dimm = false;
661 }
662 
663 DEFINE_I440FX_MACHINE(v2_1, "pc-i440fx-2.1", pc_compat_2_1_fn,
664                       pc_i440fx_2_1_machine_options);
665 
666 static void pc_i440fx_2_0_machine_options(MachineClass *m)
667 {
668     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
669 
670     pc_i440fx_2_1_machine_options(m);
671     m->hw_version = "2.0.0";
672     compat_props_add(m->compat_props, pc_compat_2_0, pc_compat_2_0_len);
673     pcmc->smbios_legacy_mode = true;
674     pcmc->has_reserved_memory = false;
675     /* This value depends on the actual DSDT and SSDT compiled into
676      * the source QEMU; unfortunately it depends on the binary and
677      * not on the machine type, so we cannot make pc-i440fx-1.7 work on
678      * both QEMU 1.7 and QEMU 2.0.
679      *
680      * Large variations cause migration to fail for more than one
681      * consecutive value of the "-smp" maxcpus option.
682      *
683      * For small variations of the kind caused by different iasl versions,
684      * the 4k rounding usually leaves slack.  However, there could be still
685      * one or two values that break.  For QEMU 1.7 and QEMU 2.0 the
686      * slack is only ~10 bytes before one "-smp maxcpus" value breaks!
687      *
688      * 6652 is valid for QEMU 2.0, the right value for pc-i440fx-1.7 on
689      * QEMU 1.7 it is 6414.  For RHEL/CentOS 7.0 it is 6418.
690      */
691     pcmc->legacy_acpi_table_size = 6652;
692     pcmc->acpi_data_size = 0x10000;
693 }
694 
695 DEFINE_I440FX_MACHINE(v2_0, "pc-i440fx-2.0", pc_compat_2_0_fn,
696                       pc_i440fx_2_0_machine_options);
697 
698 static void pc_i440fx_1_7_machine_options(MachineClass *m)
699 {
700     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
701 
702     pc_i440fx_2_0_machine_options(m);
703     m->hw_version = "1.7.0";
704     m->default_machine_opts = NULL;
705     m->option_rom_has_mr = true;
706     compat_props_add(m->compat_props, pc_compat_1_7, pc_compat_1_7_len);
707     pcmc->smbios_defaults = false;
708     pcmc->gigabyte_align = false;
709     pcmc->legacy_acpi_table_size = 6414;
710 }
711 
712 DEFINE_I440FX_MACHINE(v1_7, "pc-i440fx-1.7", pc_compat_1_7_fn,
713                       pc_i440fx_1_7_machine_options);
714 
715 static void pc_i440fx_1_6_machine_options(MachineClass *m)
716 {
717     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
718 
719     pc_i440fx_1_7_machine_options(m);
720     m->hw_version = "1.6.0";
721     m->rom_file_has_mr = false;
722     compat_props_add(m->compat_props, pc_compat_1_6, pc_compat_1_6_len);
723     pcmc->has_acpi_build = false;
724 }
725 
726 DEFINE_I440FX_MACHINE(v1_6, "pc-i440fx-1.6", pc_compat_1_6_fn,
727                       pc_i440fx_1_6_machine_options);
728 
729 static void pc_i440fx_1_5_machine_options(MachineClass *m)
730 {
731     pc_i440fx_1_6_machine_options(m);
732     m->hw_version = "1.5.0";
733     compat_props_add(m->compat_props, pc_compat_1_5, pc_compat_1_5_len);
734 }
735 
736 DEFINE_I440FX_MACHINE(v1_5, "pc-i440fx-1.5", pc_compat_1_5_fn,
737                       pc_i440fx_1_5_machine_options);
738 
739 static void pc_i440fx_1_4_machine_options(MachineClass *m)
740 {
741     pc_i440fx_1_5_machine_options(m);
742     m->hw_version = "1.4.0";
743     m->hot_add_cpu = NULL;
744     compat_props_add(m->compat_props, pc_compat_1_4, pc_compat_1_4_len);
745 }
746 
747 DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4_fn,
748                       pc_i440fx_1_4_machine_options);
749 
750 static void pc_i440fx_1_3_machine_options(MachineClass *m)
751 {
752     X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
753     static GlobalProperty compat[] = {
754         PC_CPU_MODEL_IDS("1.3.0")
755         { "usb-tablet", "usb_version", "1" },
756         { "virtio-net-pci", "ctrl_mac_addr", "off" },
757         { "virtio-net-pci", "mq", "off" },
758         { "e1000", "autonegotiation", "off" },
759     };
760 
761     pc_i440fx_1_4_machine_options(m);
762     m->hw_version = "1.3.0";
763     m->deprecation_reason = "use a newer machine type instead";
764     x86mc->compat_apic_id_mode = true;
765     compat_props_add(m->compat_props, compat, G_N_ELEMENTS(compat));
766 }
767 
768 DEFINE_I440FX_MACHINE(v1_3, "pc-1.3", pc_compat_1_3,
769                       pc_i440fx_1_3_machine_options);
770 
771 
772 static void pc_i440fx_1_2_machine_options(MachineClass *m)
773 {
774     static GlobalProperty compat[] = {
775         PC_CPU_MODEL_IDS("1.2.0")
776         { "nec-usb-xhci", "msi", "off" },
777         { "nec-usb-xhci", "msix", "off" },
778         { "qxl", "revision", "3" },
779         { "qxl-vga", "revision", "3" },
780         { "VGA", "mmio", "off" },
781     };
782 
783     pc_i440fx_1_3_machine_options(m);
784     m->hw_version = "1.2.0";
785     compat_props_add(m->compat_props, compat, G_N_ELEMENTS(compat));
786 }
787 
788 DEFINE_I440FX_MACHINE(v1_2, "pc-1.2", pc_compat_1_2,
789                       pc_i440fx_1_2_machine_options);
790 
791 
792 static void pc_i440fx_1_1_machine_options(MachineClass *m)
793 {
794     static GlobalProperty compat[] = {
795         PC_CPU_MODEL_IDS("1.1.0")
796         { "virtio-scsi-pci", "hotplug", "off" },
797         { "virtio-scsi-pci", "param_change", "off" },
798         { "VGA", "vgamem_mb", "8" },
799         { "vmware-svga", "vgamem_mb", "8" },
800         { "qxl-vga", "vgamem_mb", "8" },
801         { "qxl", "vgamem_mb", "8" },
802         { "virtio-blk-pci", "config-wce", "off" },
803     };
804 
805     pc_i440fx_1_2_machine_options(m);
806     m->hw_version = "1.1.0";
807     compat_props_add(m->compat_props, compat, G_N_ELEMENTS(compat));
808 }
809 
810 DEFINE_I440FX_MACHINE(v1_1, "pc-1.1", pc_compat_1_2,
811                       pc_i440fx_1_1_machine_options);
812 
813 static void pc_i440fx_1_0_machine_options(MachineClass *m)
814 {
815     static GlobalProperty compat[] = {
816         PC_CPU_MODEL_IDS("1.0")
817         { TYPE_ISA_FDC, "check_media_rate", "off" },
818         { "virtio-balloon-pci", "class", stringify(PCI_CLASS_MEMORY_RAM) },
819         { "apic-common", "vapic", "off" },
820         { TYPE_USB_DEVICE, "full-path", "no" },
821     };
822 
823     pc_i440fx_1_1_machine_options(m);
824     m->hw_version = "1.0";
825     compat_props_add(m->compat_props, compat, G_N_ELEMENTS(compat));
826 }
827 
828 DEFINE_I440FX_MACHINE(v1_0, "pc-1.0", pc_compat_1_2,
829                       pc_i440fx_1_0_machine_options);
830 
831 
832 typedef struct {
833     uint16_t gpu_device_id;
834     uint16_t pch_device_id;
835     uint8_t pch_revision_id;
836 } IGDDeviceIDInfo;
837 
838 /* In real world different GPU should have different PCH. But actually
839  * the different PCH DIDs likely map to different PCH SKUs. We do the
840  * same thing for the GPU. For PCH, the different SKUs are going to be
841  * all the same silicon design and implementation, just different
842  * features turn on and off with fuses. The SW interfaces should be
843  * consistent across all SKUs in a given family (eg LPT). But just same
844  * features may not be supported.
845  *
846  * Most of these different PCH features probably don't matter to the
847  * Gfx driver, but obviously any difference in display port connections
848  * will so it should be fine with any PCH in case of passthrough.
849  *
850  * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
851  * scenarios, 0x9cc3 for BDW(Broadwell).
852  */
853 static const IGDDeviceIDInfo igd_combo_id_infos[] = {
854     /* HSW Classic */
855     {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
856     {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
857     {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
858     {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
859     {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
860     /* HSW ULT */
861     {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
862     {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
863     {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
864     {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
865     {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
866     {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
867     /* HSW CRW */
868     {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
869     {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
870     /* HSW Server */
871     {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
872     /* HSW SRVR */
873     {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
874     /* BSW */
875     {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
876     {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
877     {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
878     {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
879     {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
880     {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
881     {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
882     {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
883     {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
884     {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
885     {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
886 };
887 
888 static void isa_bridge_class_init(ObjectClass *klass, void *data)
889 {
890     DeviceClass *dc = DEVICE_CLASS(klass);
891     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
892 
893     dc->desc        = "ISA bridge faked to support IGD PT";
894     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
895     k->vendor_id    = PCI_VENDOR_ID_INTEL;
896     k->class_id     = PCI_CLASS_BRIDGE_ISA;
897 };
898 
899 static TypeInfo isa_bridge_info = {
900     .name          = "igd-passthrough-isa-bridge",
901     .parent        = TYPE_PCI_DEVICE,
902     .instance_size = sizeof(PCIDevice),
903     .class_init = isa_bridge_class_init,
904     .interfaces = (InterfaceInfo[]) {
905         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
906         { },
907     },
908 };
909 
910 static void pt_graphics_register_types(void)
911 {
912     type_register_static(&isa_bridge_info);
913 }
914 type_init(pt_graphics_register_types)
915 
916 void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
917 {
918     struct PCIDevice *bridge_dev;
919     int i, num;
920     uint16_t pch_dev_id = 0xffff;
921     uint8_t pch_rev_id;
922 
923     num = ARRAY_SIZE(igd_combo_id_infos);
924     for (i = 0; i < num; i++) {
925         if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
926             pch_dev_id = igd_combo_id_infos[i].pch_device_id;
927             pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
928         }
929     }
930 
931     if (pch_dev_id == 0xffff) {
932         return;
933     }
934 
935     /* Currently IGD drivers always need to access PCH by 1f.0. */
936     bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
937                                    "igd-passthrough-isa-bridge");
938 
939     /*
940      * Note that vendor id is always PCI_VENDOR_ID_INTEL.
941      */
942     if (!bridge_dev) {
943         fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
944         return;
945     }
946     pci_config_set_device_id(bridge_dev->config, pch_dev_id);
947     pci_config_set_revision(bridge_dev->config, pch_rev_id);
948 }
949 
950 static void isapc_machine_options(MachineClass *m)
951 {
952     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
953     m->desc = "ISA-only PC";
954     m->max_cpus = 1;
955     m->option_rom_has_mr = true;
956     m->rom_file_has_mr = false;
957     pcmc->pci_enabled = false;
958     pcmc->has_acpi_build = false;
959     pcmc->smbios_defaults = false;
960     pcmc->gigabyte_align = false;
961     pcmc->smbios_legacy_mode = true;
962     pcmc->has_reserved_memory = false;
963     pcmc->default_nic_model = "ne2k_isa";
964     m->default_cpu_type = X86_CPU_TYPE_NAME("486");
965 }
966 
967 DEFINE_PC_MACHINE(isapc, "isapc", pc_init_isa,
968                   isapc_machine_options);
969 
970 
971 #ifdef CONFIG_XEN
972 static void xenfv_4_2_machine_options(MachineClass *m)
973 {
974     pc_i440fx_4_2_machine_options(m);
975     m->desc = "Xen Fully-virtualized PC";
976     m->max_cpus = HVM_MAX_VCPUS;
977     m->default_machine_opts = "accel=xen";
978 }
979 
980 DEFINE_PC_MACHINE(xenfv_4_2, "xenfv-4.2", pc_xen_hvm_init,
981                   xenfv_4_2_machine_options);
982 
983 static void xenfv_3_1_machine_options(MachineClass *m)
984 {
985     pc_i440fx_3_1_machine_options(m);
986     m->desc = "Xen Fully-virtualized PC";
987     m->alias = "xenfv";
988     m->max_cpus = HVM_MAX_VCPUS;
989     m->default_machine_opts = "accel=xen";
990 }
991 
992 DEFINE_PC_MACHINE(xenfv, "xenfv-3.1", pc_xen_hvm_init,
993                   xenfv_3_1_machine_options);
994 #endif
995