xref: /qemu/hw/i386/pc_q35.c (revision 92eecfff)
1 /*
2  * Q35 chipset based pc system emulator
3  *
4  * Copyright (c) 2003-2004 Fabrice Bellard
5  * Copyright (c) 2009, 2010
6  *               Isaku Yamahata <yamahata at valinux co jp>
7  *               VA Linux Systems Japan K.K.
8  * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
9  *
10  * This is based on pc.c, but heavily modified.
11  *
12  * Permission is hereby granted, free of charge, to any person obtaining a copy
13  * of this software and associated documentation files (the "Software"), to deal
14  * in the Software without restriction, including without limitation the rights
15  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
16  * copies of the Software, and to permit persons to whom the Software is
17  * furnished to do so, subject to the following conditions:
18  *
19  * The above copyright notice and this permission notice shall be included in
20  * all copies or substantial portions of the Software.
21  *
22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28  * THE SOFTWARE.
29  */
30 
31 #include "qemu/osdep.h"
32 #include "qemu/units.h"
33 #include "hw/loader.h"
34 #include "sysemu/arch_init.h"
35 #include "hw/i2c/smbus_eeprom.h"
36 #include "hw/rtc/mc146818rtc.h"
37 #include "sysemu/kvm.h"
38 #include "hw/kvm/clock.h"
39 #include "hw/pci-host/q35.h"
40 #include "hw/qdev-properties.h"
41 #include "exec/address-spaces.h"
42 #include "hw/i386/x86.h"
43 #include "hw/i386/pc.h"
44 #include "hw/i386/ich9.h"
45 #include "hw/i386/amd_iommu.h"
46 #include "hw/i386/intel_iommu.h"
47 #include "hw/display/ramfb.h"
48 #include "hw/firmware/smbios.h"
49 #include "hw/ide/pci.h"
50 #include "hw/ide/ahci.h"
51 #include "hw/usb.h"
52 #include "qapi/error.h"
53 #include "qemu/error-report.h"
54 #include "sysemu/numa.h"
55 #include "hw/hyperv/vmbus-bridge.h"
56 #include "hw/mem/nvdimm.h"
57 #include "hw/i386/acpi-build.h"
58 
59 /* ICH9 AHCI has 6 ports */
60 #define MAX_SATA_PORTS     6
61 
62 struct ehci_companions {
63     const char *name;
64     int func;
65     int port;
66 };
67 
68 static const struct ehci_companions ich9_1d[] = {
69     { .name = "ich9-usb-uhci1", .func = 0, .port = 0 },
70     { .name = "ich9-usb-uhci2", .func = 1, .port = 2 },
71     { .name = "ich9-usb-uhci3", .func = 2, .port = 4 },
72 };
73 
74 static const struct ehci_companions ich9_1a[] = {
75     { .name = "ich9-usb-uhci4", .func = 0, .port = 0 },
76     { .name = "ich9-usb-uhci5", .func = 1, .port = 2 },
77     { .name = "ich9-usb-uhci6", .func = 2, .port = 4 },
78 };
79 
80 static int ehci_create_ich9_with_companions(PCIBus *bus, int slot)
81 {
82     const struct ehci_companions *comp;
83     PCIDevice *ehci, *uhci;
84     BusState *usbbus;
85     const char *name;
86     int i;
87 
88     switch (slot) {
89     case 0x1d:
90         name = "ich9-usb-ehci1";
91         comp = ich9_1d;
92         break;
93     case 0x1a:
94         name = "ich9-usb-ehci2";
95         comp = ich9_1a;
96         break;
97     default:
98         return -1;
99     }
100 
101     ehci = pci_new_multifunction(PCI_DEVFN(slot, 7), true, name);
102     pci_realize_and_unref(ehci, bus, &error_fatal);
103     usbbus = QLIST_FIRST(&ehci->qdev.child_bus);
104 
105     for (i = 0; i < 3; i++) {
106         uhci = pci_new_multifunction(PCI_DEVFN(slot, comp[i].func), true,
107                                      comp[i].name);
108         qdev_prop_set_string(&uhci->qdev, "masterbus", usbbus->name);
109         qdev_prop_set_uint32(&uhci->qdev, "firstport", comp[i].port);
110         pci_realize_and_unref(uhci, bus, &error_fatal);
111     }
112     return 0;
113 }
114 
115 /* PC hardware initialisation */
116 static void pc_q35_init(MachineState *machine)
117 {
118     PCMachineState *pcms = PC_MACHINE(machine);
119     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
120     X86MachineState *x86ms = X86_MACHINE(machine);
121     Q35PCIHost *q35_host;
122     PCIHostState *phb;
123     PCIBus *host_bus;
124     PCIDevice *lpc;
125     DeviceState *lpc_dev;
126     BusState *idebus[MAX_SATA_PORTS];
127     ISADevice *rtc_state;
128     MemoryRegion *system_io = get_system_io();
129     MemoryRegion *pci_memory;
130     MemoryRegion *rom_memory;
131     MemoryRegion *ram_memory;
132     GSIState *gsi_state;
133     ISABus *isa_bus;
134     int i;
135     ICH9LPCState *ich9_lpc;
136     PCIDevice *ahci;
137     ram_addr_t lowmem;
138     DriveInfo *hd[MAX_SATA_PORTS];
139     MachineClass *mc = MACHINE_GET_CLASS(machine);
140 
141     /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
142      * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
143      * also known as MMCFG).
144      * If it doesn't, we need to split it in chunks below and above 4G.
145      * In any case, try to make sure that guest addresses aligned at
146      * 1G boundaries get mapped to host addresses aligned at 1G boundaries.
147      */
148     if (machine->ram_size >= 0xb0000000) {
149         lowmem = 0x80000000;
150     } else {
151         lowmem = 0xb0000000;
152     }
153 
154     /* Handle the machine opt max-ram-below-4g.  It is basically doing
155      * min(qemu limit, user limit).
156      */
157     if (!pcms->max_ram_below_4g) {
158         pcms->max_ram_below_4g = 4 * GiB;
159     }
160     if (lowmem > pcms->max_ram_below_4g) {
161         lowmem = pcms->max_ram_below_4g;
162         if (machine->ram_size - lowmem > lowmem &&
163             lowmem & (1 * GiB - 1)) {
164             warn_report("There is possibly poor performance as the ram size "
165                         " (0x%" PRIx64 ") is more then twice the size of"
166                         " max-ram-below-4g (%"PRIu64") and"
167                         " max-ram-below-4g is not a multiple of 1G.",
168                         (uint64_t)machine->ram_size, pcms->max_ram_below_4g);
169         }
170     }
171 
172     if (machine->ram_size >= lowmem) {
173         x86ms->above_4g_mem_size = machine->ram_size - lowmem;
174         x86ms->below_4g_mem_size = lowmem;
175     } else {
176         x86ms->above_4g_mem_size = 0;
177         x86ms->below_4g_mem_size = machine->ram_size;
178     }
179 
180     x86_cpus_init(x86ms, pcmc->default_cpu_version);
181 
182     kvmclock_create(pcmc->kvmclock_create_always);
183 
184     /* pci enabled */
185     if (pcmc->pci_enabled) {
186         pci_memory = g_new(MemoryRegion, 1);
187         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
188         rom_memory = pci_memory;
189     } else {
190         pci_memory = NULL;
191         rom_memory = get_system_memory();
192     }
193 
194     pc_guest_info_init(pcms);
195 
196     if (pcmc->smbios_defaults) {
197         /* These values are guest ABI, do not change */
198         smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
199                             mc->name, pcmc->smbios_legacy_mode,
200                             pcmc->smbios_uuid_encoded,
201                             SMBIOS_ENTRY_POINT_21);
202     }
203 
204     /* allocate ram and load rom/bios */
205     pc_memory_init(pcms, get_system_memory(), rom_memory, &ram_memory);
206 
207     /* create pci host bus */
208     q35_host = Q35_HOST_DEVICE(qdev_new(TYPE_Q35_HOST_DEVICE));
209 
210     object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host));
211     object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_RAM_MEM,
212                              OBJECT(ram_memory), NULL);
213     object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_PCI_MEM,
214                              OBJECT(pci_memory), NULL);
215     object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_SYSTEM_MEM,
216                              OBJECT(get_system_memory()), NULL);
217     object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_IO_MEM,
218                              OBJECT(system_io), NULL);
219     object_property_set_int(OBJECT(q35_host), PCI_HOST_BELOW_4G_MEM_SIZE,
220                             x86ms->below_4g_mem_size, NULL);
221     object_property_set_int(OBJECT(q35_host), PCI_HOST_ABOVE_4G_MEM_SIZE,
222                             x86ms->above_4g_mem_size, NULL);
223     /* pci */
224     sysbus_realize_and_unref(SYS_BUS_DEVICE(q35_host), &error_fatal);
225     phb = PCI_HOST_BRIDGE(q35_host);
226     host_bus = phb->bus;
227     /* create ISA bus */
228     lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV,
229                                           ICH9_LPC_FUNC), true,
230                                           TYPE_ICH9_LPC_DEVICE);
231 
232     object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
233                              TYPE_HOTPLUG_HANDLER,
234                              (Object **)&x86ms->acpi_dev,
235                              object_property_allow_set_link,
236                              OBJ_PROP_LINK_STRONG);
237     object_property_set_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
238                              OBJECT(lpc), &error_abort);
239 
240     /* irq lines */
241     gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
242 
243     ich9_lpc = ICH9_LPC_DEVICE(lpc);
244     lpc_dev = DEVICE(lpc);
245     for (i = 0; i < GSI_NUM_PINS; i++) {
246         qdev_connect_gpio_out_named(lpc_dev, ICH9_GPIO_GSI, i, x86ms->gsi[i]);
247     }
248     pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc,
249                  ICH9_LPC_NB_PIRQS);
250     pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq);
251     isa_bus = ich9_lpc->isa_bus;
252 
253     pc_i8259_create(isa_bus, gsi_state->i8259_irq);
254 
255     if (pcmc->pci_enabled) {
256         ioapic_init_gsi(gsi_state, "q35");
257     }
258 
259     if (tcg_enabled()) {
260         x86_register_ferr_irq(x86ms->gsi[13]);
261     }
262 
263     assert(pcms->vmport != ON_OFF_AUTO__MAX);
264     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
265         pcms->vmport = ON_OFF_AUTO_ON;
266     }
267 
268     /* init basic PC hardware */
269     pc_basic_device_init(pcms, isa_bus, x86ms->gsi, &rtc_state, !mc->no_floppy,
270                          0xff0104);
271 
272     /* connect pm stuff to lpc */
273     ich9_lpc_pm_init(lpc, x86_machine_is_smm_enabled(x86ms));
274 
275     if (pcms->sata_enabled) {
276         /* ahci and SATA device, for q35 1 ahci controller is built-in */
277         ahci = pci_create_simple_multifunction(host_bus,
278                                                PCI_DEVFN(ICH9_SATA1_DEV,
279                                                          ICH9_SATA1_FUNC),
280                                                true, "ich9-ahci");
281         idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0");
282         idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1");
283         g_assert(MAX_SATA_PORTS == ahci_get_num_ports(ahci));
284         ide_drive_get(hd, ahci_get_num_ports(ahci));
285         ahci_ide_create_devs(ahci, hd);
286     } else {
287         idebus[0] = idebus[1] = NULL;
288     }
289 
290     if (machine_usb(machine)) {
291         /* Should we create 6 UHCI according to ich9 spec? */
292         ehci_create_ich9_with_companions(host_bus, 0x1d);
293     }
294 
295     if (pcms->smbus_enabled) {
296         /* TODO: Populate SPD eeprom data.  */
297         pcms->smbus = ich9_smb_init(host_bus,
298                                     PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC),
299                                     0xb100);
300         smbus_eeprom_init(pcms->smbus, 8, NULL, 0);
301     }
302 
303     pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
304 
305     /* the rest devices to which pci devfn is automatically assigned */
306     pc_vga_init(isa_bus, host_bus);
307     pc_nic_init(pcmc, isa_bus, host_bus);
308 
309     if (machine->nvdimms_state->is_enabled) {
310         nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
311                                x86_nvdimm_acpi_dsmio,
312                                x86ms->fw_cfg, OBJECT(pcms));
313     }
314 }
315 
316 #define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \
317     static void pc_init_##suffix(MachineState *machine) \
318     { \
319         void (*compat)(MachineState *m) = (compatfn); \
320         if (compat) { \
321             compat(machine); \
322         } \
323         pc_q35_init(machine); \
324     } \
325     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
326 
327 
328 static void pc_q35_machine_options(MachineClass *m)
329 {
330     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
331     pcmc->default_nic_model = "e1000e";
332 
333     m->family = "pc_q35";
334     m->desc = "Standard PC (Q35 + ICH9, 2009)";
335     m->units_per_default_bus = 1;
336     m->default_machine_opts = "firmware=bios-256k.bin";
337     m->default_display = "std";
338     m->default_kernel_irqchip_split = false;
339     m->no_floppy = 1;
340     machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE);
341     machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE);
342     machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
343     machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
344     m->max_cpus = 288;
345 }
346 
347 static void pc_q35_5_2_machine_options(MachineClass *m)
348 {
349     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
350     pc_q35_machine_options(m);
351     m->alias = "q35";
352     pcmc->default_cpu_version = 1;
353 }
354 
355 DEFINE_Q35_MACHINE(v5_2, "pc-q35-5.2", NULL,
356                    pc_q35_5_2_machine_options);
357 
358 static void pc_q35_5_1_machine_options(MachineClass *m)
359 {
360     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
361 
362     pc_q35_5_2_machine_options(m);
363     m->alias = NULL;
364     compat_props_add(m->compat_props, hw_compat_5_1, hw_compat_5_1_len);
365     compat_props_add(m->compat_props, pc_compat_5_1, pc_compat_5_1_len);
366     pcmc->kvmclock_create_always = false;
367 }
368 
369 DEFINE_Q35_MACHINE(v5_1, "pc-q35-5.1", NULL,
370                    pc_q35_5_1_machine_options);
371 
372 static void pc_q35_5_0_machine_options(MachineClass *m)
373 {
374     pc_q35_5_1_machine_options(m);
375     m->alias = NULL;
376     m->numa_mem_supported = true;
377     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
378     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
379     m->auto_enable_numa_with_memdev = false;
380 }
381 
382 DEFINE_Q35_MACHINE(v5_0, "pc-q35-5.0", NULL,
383                    pc_q35_5_0_machine_options);
384 
385 static void pc_q35_4_2_machine_options(MachineClass *m)
386 {
387     pc_q35_5_0_machine_options(m);
388     m->alias = NULL;
389     compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
390     compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
391 }
392 
393 DEFINE_Q35_MACHINE(v4_2, "pc-q35-4.2", NULL,
394                    pc_q35_4_2_machine_options);
395 
396 static void pc_q35_4_1_machine_options(MachineClass *m)
397 {
398     pc_q35_4_2_machine_options(m);
399     m->alias = NULL;
400     compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
401     compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
402 }
403 
404 DEFINE_Q35_MACHINE(v4_1, "pc-q35-4.1", NULL,
405                    pc_q35_4_1_machine_options);
406 
407 static void pc_q35_4_0_1_machine_options(MachineClass *m)
408 {
409     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
410     pc_q35_4_1_machine_options(m);
411     m->alias = NULL;
412     pcmc->default_cpu_version = CPU_VERSION_LEGACY;
413     /*
414      * This is the default machine for the 4.0-stable branch. It is basically
415      * a 4.0 that doesn't use split irqchip by default. It MUST hence apply the
416      * 4.0 compat props.
417      */
418     compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len);
419     compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len);
420 }
421 
422 DEFINE_Q35_MACHINE(v4_0_1, "pc-q35-4.0.1", NULL,
423                    pc_q35_4_0_1_machine_options);
424 
425 static void pc_q35_4_0_machine_options(MachineClass *m)
426 {
427     pc_q35_4_0_1_machine_options(m);
428     m->default_kernel_irqchip_split = true;
429     m->alias = NULL;
430     /* Compat props are applied by the 4.0.1 machine */
431 }
432 
433 DEFINE_Q35_MACHINE(v4_0, "pc-q35-4.0", NULL,
434                    pc_q35_4_0_machine_options);
435 
436 static void pc_q35_3_1_machine_options(MachineClass *m)
437 {
438     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
439 
440     pc_q35_4_0_machine_options(m);
441     m->default_kernel_irqchip_split = false;
442     pcmc->do_not_add_smb_acpi = true;
443     m->smbus_no_migration_support = true;
444     m->alias = NULL;
445     pcmc->pvh_enabled = false;
446     compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
447     compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
448 }
449 
450 DEFINE_Q35_MACHINE(v3_1, "pc-q35-3.1", NULL,
451                    pc_q35_3_1_machine_options);
452 
453 static void pc_q35_3_0_machine_options(MachineClass *m)
454 {
455     pc_q35_3_1_machine_options(m);
456     compat_props_add(m->compat_props, hw_compat_3_0, hw_compat_3_0_len);
457     compat_props_add(m->compat_props, pc_compat_3_0, pc_compat_3_0_len);
458 }
459 
460 DEFINE_Q35_MACHINE(v3_0, "pc-q35-3.0", NULL,
461                     pc_q35_3_0_machine_options);
462 
463 static void pc_q35_2_12_machine_options(MachineClass *m)
464 {
465     pc_q35_3_0_machine_options(m);
466     compat_props_add(m->compat_props, hw_compat_2_12, hw_compat_2_12_len);
467     compat_props_add(m->compat_props, pc_compat_2_12, pc_compat_2_12_len);
468 }
469 
470 DEFINE_Q35_MACHINE(v2_12, "pc-q35-2.12", NULL,
471                    pc_q35_2_12_machine_options);
472 
473 static void pc_q35_2_11_machine_options(MachineClass *m)
474 {
475     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
476 
477     pc_q35_2_12_machine_options(m);
478     pcmc->default_nic_model = "e1000";
479     compat_props_add(m->compat_props, hw_compat_2_11, hw_compat_2_11_len);
480     compat_props_add(m->compat_props, pc_compat_2_11, pc_compat_2_11_len);
481 }
482 
483 DEFINE_Q35_MACHINE(v2_11, "pc-q35-2.11", NULL,
484                    pc_q35_2_11_machine_options);
485 
486 static void pc_q35_2_10_machine_options(MachineClass *m)
487 {
488     pc_q35_2_11_machine_options(m);
489     compat_props_add(m->compat_props, hw_compat_2_10, hw_compat_2_10_len);
490     compat_props_add(m->compat_props, pc_compat_2_10, pc_compat_2_10_len);
491     m->auto_enable_numa_with_memhp = false;
492 }
493 
494 DEFINE_Q35_MACHINE(v2_10, "pc-q35-2.10", NULL,
495                    pc_q35_2_10_machine_options);
496 
497 static void pc_q35_2_9_machine_options(MachineClass *m)
498 {
499     pc_q35_2_10_machine_options(m);
500     compat_props_add(m->compat_props, hw_compat_2_9, hw_compat_2_9_len);
501     compat_props_add(m->compat_props, pc_compat_2_9, pc_compat_2_9_len);
502 }
503 
504 DEFINE_Q35_MACHINE(v2_9, "pc-q35-2.9", NULL,
505                    pc_q35_2_9_machine_options);
506 
507 static void pc_q35_2_8_machine_options(MachineClass *m)
508 {
509     pc_q35_2_9_machine_options(m);
510     compat_props_add(m->compat_props, hw_compat_2_8, hw_compat_2_8_len);
511     compat_props_add(m->compat_props, pc_compat_2_8, pc_compat_2_8_len);
512 }
513 
514 DEFINE_Q35_MACHINE(v2_8, "pc-q35-2.8", NULL,
515                    pc_q35_2_8_machine_options);
516 
517 static void pc_q35_2_7_machine_options(MachineClass *m)
518 {
519     pc_q35_2_8_machine_options(m);
520     m->max_cpus = 255;
521     compat_props_add(m->compat_props, hw_compat_2_7, hw_compat_2_7_len);
522     compat_props_add(m->compat_props, pc_compat_2_7, pc_compat_2_7_len);
523 }
524 
525 DEFINE_Q35_MACHINE(v2_7, "pc-q35-2.7", NULL,
526                    pc_q35_2_7_machine_options);
527 
528 static void pc_q35_2_6_machine_options(MachineClass *m)
529 {
530     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
531 
532     pc_q35_2_7_machine_options(m);
533     pcmc->legacy_cpu_hotplug = true;
534     pcmc->linuxboot_dma_enabled = false;
535     compat_props_add(m->compat_props, hw_compat_2_6, hw_compat_2_6_len);
536     compat_props_add(m->compat_props, pc_compat_2_6, pc_compat_2_6_len);
537 }
538 
539 DEFINE_Q35_MACHINE(v2_6, "pc-q35-2.6", NULL,
540                    pc_q35_2_6_machine_options);
541 
542 static void pc_q35_2_5_machine_options(MachineClass *m)
543 {
544     X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
545 
546     pc_q35_2_6_machine_options(m);
547     x86mc->save_tsc_khz = false;
548     m->legacy_fw_cfg_order = 1;
549     compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
550     compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
551 }
552 
553 DEFINE_Q35_MACHINE(v2_5, "pc-q35-2.5", NULL,
554                    pc_q35_2_5_machine_options);
555 
556 static void pc_q35_2_4_machine_options(MachineClass *m)
557 {
558     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
559 
560     pc_q35_2_5_machine_options(m);
561     m->hw_version = "2.4.0";
562     pcmc->broken_reserved_end = true;
563     compat_props_add(m->compat_props, hw_compat_2_4, hw_compat_2_4_len);
564     compat_props_add(m->compat_props, pc_compat_2_4, pc_compat_2_4_len);
565 }
566 
567 DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
568                    pc_q35_2_4_machine_options);
569