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hw/i386: add 4g boundary start to X86MachineState
[mirror_qemu.git] / hw / i386 / pc.c
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 "qemu/units.h"
27 #include "hw/i386/x86.h"
28 #include "hw/i386/pc.h"
29 #include "hw/char/serial.h"
30 #include "hw/char/parallel.h"
31 #include "hw/i386/apic.h"
32 #include "hw/i386/topology.h"
33 #include "hw/i386/fw_cfg.h"
34 #include "hw/i386/vmport.h"
35 #include "sysemu/cpus.h"
36 #include "hw/block/fdc.h"
37 #include "hw/ide.h"
38 #include "hw/pci/pci.h"
39 #include "hw/pci/pci_bus.h"
40 #include "hw/pci-bridge/pci_expander_bridge.h"
41 #include "hw/nvram/fw_cfg.h"
42 #include "hw/timer/hpet.h"
43 #include "hw/firmware/smbios.h"
44 #include "hw/loader.h"
45 #include "elf.h"
46 #include "migration/vmstate.h"
47 #include "multiboot.h"
48 #include "hw/rtc/mc146818rtc.h"
49 #include "hw/intc/i8259.h"
50 #include "hw/dma/i8257.h"
51 #include "hw/timer/i8254.h"
52 #include "hw/input/i8042.h"
53 #include "hw/irq.h"
54 #include "hw/audio/pcspk.h"
55 #include "hw/pci/msi.h"
56 #include "hw/sysbus.h"
57 #include "sysemu/sysemu.h"
58 #include "sysemu/tcg.h"
59 #include "sysemu/numa.h"
60 #include "sysemu/kvm.h"
61 #include "sysemu/xen.h"
62 #include "sysemu/reset.h"
63 #include "sysemu/runstate.h"
64 #include "kvm/kvm_i386.h"
65 #include "hw/xen/xen.h"
66 #include "hw/xen/start_info.h"
67 #include "ui/qemu-spice.h"
68 #include "exec/memory.h"
69 #include "qemu/bitmap.h"
70 #include "qemu/config-file.h"
71 #include "qemu/error-report.h"
72 #include "qemu/option.h"
73 #include "qemu/cutils.h"
74 #include "hw/acpi/acpi.h"
75 #include "hw/acpi/cpu_hotplug.h"
76 #include "acpi-build.h"
77 #include "hw/mem/pc-dimm.h"
78 #include "hw/mem/nvdimm.h"
79 #include "hw/cxl/cxl.h"
80 #include "hw/cxl/cxl_host.h"
81 #include "qapi/error.h"
82 #include "qapi/qapi-visit-common.h"
83 #include "qapi/qapi-visit-machine.h"
84 #include "qapi/visitor.h"
85 #include "hw/core/cpu.h"
86 #include "hw/usb.h"
87 #include "hw/i386/intel_iommu.h"
88 #include "hw/net/ne2000-isa.h"
89 #include "standard-headers/asm-x86/bootparam.h"
90 #include "hw/virtio/virtio-iommu.h"
91 #include "hw/virtio/virtio-pmem-pci.h"
92 #include "hw/virtio/virtio-mem-pci.h"
93 #include "hw/mem/memory-device.h"
94 #include "sysemu/replay.h"
95 #include "qapi/qmp/qerror.h"
96 #include "e820_memory_layout.h"
97 #include "fw_cfg.h"
98 #include "trace.h"
99 #include CONFIG_DEVICES
100
101 /*
102 * Helper for setting model-id for CPU models that changed model-id
103 * depending on QEMU versions up to QEMU 2.4.
104 */
105 #define PC_CPU_MODEL_IDS(v) \
106 { "qemu32-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
107 { "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
108 { "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },
109
110 GlobalProperty pc_compat_7_0[] = {};
111 const size_t pc_compat_7_0_len = G_N_ELEMENTS(pc_compat_7_0);
112
113 GlobalProperty pc_compat_6_2[] = {
114 { "virtio-mem", "unplugged-inaccessible", "off" },
115 };
116 const size_t pc_compat_6_2_len = G_N_ELEMENTS(pc_compat_6_2);
117
118 GlobalProperty pc_compat_6_1[] = {
119 { TYPE_X86_CPU, "hv-version-id-build", "0x1bbc" },
120 { TYPE_X86_CPU, "hv-version-id-major", "0x0006" },
121 { TYPE_X86_CPU, "hv-version-id-minor", "0x0001" },
122 { "ICH9-LPC", "x-keep-pci-slot-hpc", "false" },
123 };
124 const size_t pc_compat_6_1_len = G_N_ELEMENTS(pc_compat_6_1);
125
126 GlobalProperty pc_compat_6_0[] = {
127 { "qemu64" "-" TYPE_X86_CPU, "family", "6" },
128 { "qemu64" "-" TYPE_X86_CPU, "model", "6" },
129 { "qemu64" "-" TYPE_X86_CPU, "stepping", "3" },
130 { TYPE_X86_CPU, "x-vendor-cpuid-only", "off" },
131 { "ICH9-LPC", ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, "off" },
132 { "ICH9-LPC", "x-keep-pci-slot-hpc", "true" },
133 };
134 const size_t pc_compat_6_0_len = G_N_ELEMENTS(pc_compat_6_0);
135
136 GlobalProperty pc_compat_5_2[] = {
137 { "ICH9-LPC", "x-smi-cpu-hotunplug", "off" },
138 };
139 const size_t pc_compat_5_2_len = G_N_ELEMENTS(pc_compat_5_2);
140
141 GlobalProperty pc_compat_5_1[] = {
142 { "ICH9-LPC", "x-smi-cpu-hotplug", "off" },
143 { TYPE_X86_CPU, "kvm-msi-ext-dest-id", "off" },
144 };
145 const size_t pc_compat_5_1_len = G_N_ELEMENTS(pc_compat_5_1);
146
147 GlobalProperty pc_compat_5_0[] = {
148 };
149 const size_t pc_compat_5_0_len = G_N_ELEMENTS(pc_compat_5_0);
150
151 GlobalProperty pc_compat_4_2[] = {
152 { "mch", "smbase-smram", "off" },
153 };
154 const size_t pc_compat_4_2_len = G_N_ELEMENTS(pc_compat_4_2);
155
156 GlobalProperty pc_compat_4_1[] = {};
157 const size_t pc_compat_4_1_len = G_N_ELEMENTS(pc_compat_4_1);
158
159 GlobalProperty pc_compat_4_0[] = {};
160 const size_t pc_compat_4_0_len = G_N_ELEMENTS(pc_compat_4_0);
161
162 GlobalProperty pc_compat_3_1[] = {
163 { "intel-iommu", "dma-drain", "off" },
164 { "Opteron_G3" "-" TYPE_X86_CPU, "rdtscp", "off" },
165 { "Opteron_G4" "-" TYPE_X86_CPU, "rdtscp", "off" },
166 { "Opteron_G4" "-" TYPE_X86_CPU, "npt", "off" },
167 { "Opteron_G4" "-" TYPE_X86_CPU, "nrip-save", "off" },
168 { "Opteron_G5" "-" TYPE_X86_CPU, "rdtscp", "off" },
169 { "Opteron_G5" "-" TYPE_X86_CPU, "npt", "off" },
170 { "Opteron_G5" "-" TYPE_X86_CPU, "nrip-save", "off" },
171 { "EPYC" "-" TYPE_X86_CPU, "npt", "off" },
172 { "EPYC" "-" TYPE_X86_CPU, "nrip-save", "off" },
173 { "EPYC-IBPB" "-" TYPE_X86_CPU, "npt", "off" },
174 { "EPYC-IBPB" "-" TYPE_X86_CPU, "nrip-save", "off" },
175 { "Skylake-Client" "-" TYPE_X86_CPU, "mpx", "on" },
176 { "Skylake-Client-IBRS" "-" TYPE_X86_CPU, "mpx", "on" },
177 { "Skylake-Server" "-" TYPE_X86_CPU, "mpx", "on" },
178 { "Skylake-Server-IBRS" "-" TYPE_X86_CPU, "mpx", "on" },
179 { "Cascadelake-Server" "-" TYPE_X86_CPU, "mpx", "on" },
180 { "Icelake-Client" "-" TYPE_X86_CPU, "mpx", "on" },
181 { "Icelake-Server" "-" TYPE_X86_CPU, "mpx", "on" },
182 { "Cascadelake-Server" "-" TYPE_X86_CPU, "stepping", "5" },
183 { TYPE_X86_CPU, "x-intel-pt-auto-level", "off" },
184 };
185 const size_t pc_compat_3_1_len = G_N_ELEMENTS(pc_compat_3_1);
186
187 GlobalProperty pc_compat_3_0[] = {
188 { TYPE_X86_CPU, "x-hv-synic-kvm-only", "on" },
189 { "Skylake-Server" "-" TYPE_X86_CPU, "pku", "off" },
190 { "Skylake-Server-IBRS" "-" TYPE_X86_CPU, "pku", "off" },
191 };
192 const size_t pc_compat_3_0_len = G_N_ELEMENTS(pc_compat_3_0);
193
194 GlobalProperty pc_compat_2_12[] = {
195 { TYPE_X86_CPU, "legacy-cache", "on" },
196 { TYPE_X86_CPU, "topoext", "off" },
197 { "EPYC-" TYPE_X86_CPU, "xlevel", "0x8000000a" },
198 { "EPYC-IBPB-" TYPE_X86_CPU, "xlevel", "0x8000000a" },
199 };
200 const size_t pc_compat_2_12_len = G_N_ELEMENTS(pc_compat_2_12);
201
202 GlobalProperty pc_compat_2_11[] = {
203 { TYPE_X86_CPU, "x-migrate-smi-count", "off" },
204 { "Skylake-Server" "-" TYPE_X86_CPU, "clflushopt", "off" },
205 };
206 const size_t pc_compat_2_11_len = G_N_ELEMENTS(pc_compat_2_11);
207
208 GlobalProperty pc_compat_2_10[] = {
209 { TYPE_X86_CPU, "x-hv-max-vps", "0x40" },
210 { "i440FX-pcihost", "x-pci-hole64-fix", "off" },
211 { "q35-pcihost", "x-pci-hole64-fix", "off" },
212 };
213 const size_t pc_compat_2_10_len = G_N_ELEMENTS(pc_compat_2_10);
214
215 GlobalProperty pc_compat_2_9[] = {
216 { "mch", "extended-tseg-mbytes", "0" },
217 };
218 const size_t pc_compat_2_9_len = G_N_ELEMENTS(pc_compat_2_9);
219
220 GlobalProperty pc_compat_2_8[] = {
221 { TYPE_X86_CPU, "tcg-cpuid", "off" },
222 { "kvmclock", "x-mach-use-reliable-get-clock", "off" },
223 { "ICH9-LPC", "x-smi-broadcast", "off" },
224 { TYPE_X86_CPU, "vmware-cpuid-freq", "off" },
225 { "Haswell-" TYPE_X86_CPU, "stepping", "1" },
226 };
227 const size_t pc_compat_2_8_len = G_N_ELEMENTS(pc_compat_2_8);
228
229 GlobalProperty pc_compat_2_7[] = {
230 { TYPE_X86_CPU, "l3-cache", "off" },
231 { TYPE_X86_CPU, "full-cpuid-auto-level", "off" },
232 { "Opteron_G3" "-" TYPE_X86_CPU, "family", "15" },
233 { "Opteron_G3" "-" TYPE_X86_CPU, "model", "6" },
234 { "Opteron_G3" "-" TYPE_X86_CPU, "stepping", "1" },
235 { "isa-pcspk", "migrate", "off" },
236 };
237 const size_t pc_compat_2_7_len = G_N_ELEMENTS(pc_compat_2_7);
238
239 GlobalProperty pc_compat_2_6[] = {
240 { TYPE_X86_CPU, "cpuid-0xb", "off" },
241 { "vmxnet3", "romfile", "" },
242 { TYPE_X86_CPU, "fill-mtrr-mask", "off" },
243 { "apic-common", "legacy-instance-id", "on", }
244 };
245 const size_t pc_compat_2_6_len = G_N_ELEMENTS(pc_compat_2_6);
246
247 GlobalProperty pc_compat_2_5[] = {};
248 const size_t pc_compat_2_5_len = G_N_ELEMENTS(pc_compat_2_5);
249
250 GlobalProperty pc_compat_2_4[] = {
251 PC_CPU_MODEL_IDS("2.4.0")
252 { "Haswell-" TYPE_X86_CPU, "abm", "off" },
253 { "Haswell-noTSX-" TYPE_X86_CPU, "abm", "off" },
254 { "Broadwell-" TYPE_X86_CPU, "abm", "off" },
255 { "Broadwell-noTSX-" TYPE_X86_CPU, "abm", "off" },
256 { "host" "-" TYPE_X86_CPU, "host-cache-info", "on" },
257 { TYPE_X86_CPU, "check", "off" },
258 { "qemu64" "-" TYPE_X86_CPU, "sse4a", "on" },
259 { "qemu64" "-" TYPE_X86_CPU, "abm", "on" },
260 { "qemu64" "-" TYPE_X86_CPU, "popcnt", "on" },
261 { "qemu32" "-" TYPE_X86_CPU, "popcnt", "on" },
262 { "Opteron_G2" "-" TYPE_X86_CPU, "rdtscp", "on" },
263 { "Opteron_G3" "-" TYPE_X86_CPU, "rdtscp", "on" },
264 { "Opteron_G4" "-" TYPE_X86_CPU, "rdtscp", "on" },
265 { "Opteron_G5" "-" TYPE_X86_CPU, "rdtscp", "on", }
266 };
267 const size_t pc_compat_2_4_len = G_N_ELEMENTS(pc_compat_2_4);
268
269 GlobalProperty pc_compat_2_3[] = {
270 PC_CPU_MODEL_IDS("2.3.0")
271 { TYPE_X86_CPU, "arat", "off" },
272 { "qemu64" "-" TYPE_X86_CPU, "min-level", "4" },
273 { "kvm64" "-" TYPE_X86_CPU, "min-level", "5" },
274 { "pentium3" "-" TYPE_X86_CPU, "min-level", "2" },
275 { "n270" "-" TYPE_X86_CPU, "min-level", "5" },
276 { "Conroe" "-" TYPE_X86_CPU, "min-level", "4" },
277 { "Penryn" "-" TYPE_X86_CPU, "min-level", "4" },
278 { "Nehalem" "-" TYPE_X86_CPU, "min-level", "4" },
279 { "n270" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
280 { "Penryn" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
281 { "Conroe" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
282 { "Nehalem" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
283 { "Westmere" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
284 { "SandyBridge" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
285 { "IvyBridge" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
286 { "Haswell" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
287 { "Haswell-noTSX" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
288 { "Broadwell" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
289 { "Broadwell-noTSX" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
290 { TYPE_X86_CPU, "kvm-no-smi-migration", "on" },
291 };
292 const size_t pc_compat_2_3_len = G_N_ELEMENTS(pc_compat_2_3);
293
294 GlobalProperty pc_compat_2_2[] = {
295 PC_CPU_MODEL_IDS("2.2.0")
296 { "kvm64" "-" TYPE_X86_CPU, "vme", "off" },
297 { "kvm32" "-" TYPE_X86_CPU, "vme", "off" },
298 { "Conroe" "-" TYPE_X86_CPU, "vme", "off" },
299 { "Penryn" "-" TYPE_X86_CPU, "vme", "off" },
300 { "Nehalem" "-" TYPE_X86_CPU, "vme", "off" },
301 { "Westmere" "-" TYPE_X86_CPU, "vme", "off" },
302 { "SandyBridge" "-" TYPE_X86_CPU, "vme", "off" },
303 { "Haswell" "-" TYPE_X86_CPU, "vme", "off" },
304 { "Broadwell" "-" TYPE_X86_CPU, "vme", "off" },
305 { "Opteron_G1" "-" TYPE_X86_CPU, "vme", "off" },
306 { "Opteron_G2" "-" TYPE_X86_CPU, "vme", "off" },
307 { "Opteron_G3" "-" TYPE_X86_CPU, "vme", "off" },
308 { "Opteron_G4" "-" TYPE_X86_CPU, "vme", "off" },
309 { "Opteron_G5" "-" TYPE_X86_CPU, "vme", "off" },
310 { "Haswell" "-" TYPE_X86_CPU, "f16c", "off" },
311 { "Haswell" "-" TYPE_X86_CPU, "rdrand", "off" },
312 { "Broadwell" "-" TYPE_X86_CPU, "f16c", "off" },
313 { "Broadwell" "-" TYPE_X86_CPU, "rdrand", "off" },
314 };
315 const size_t pc_compat_2_2_len = G_N_ELEMENTS(pc_compat_2_2);
316
317 GlobalProperty pc_compat_2_1[] = {
318 PC_CPU_MODEL_IDS("2.1.0")
319 { "coreduo" "-" TYPE_X86_CPU, "vmx", "on" },
320 { "core2duo" "-" TYPE_X86_CPU, "vmx", "on" },
321 };
322 const size_t pc_compat_2_1_len = G_N_ELEMENTS(pc_compat_2_1);
323
324 GlobalProperty pc_compat_2_0[] = {
325 PC_CPU_MODEL_IDS("2.0.0")
326 { "virtio-scsi-pci", "any_layout", "off" },
327 { "PIIX4_PM", "memory-hotplug-support", "off" },
328 { "apic", "version", "0x11" },
329 { "nec-usb-xhci", "superspeed-ports-first", "off" },
330 { "nec-usb-xhci", "force-pcie-endcap", "on" },
331 { "pci-serial", "prog_if", "0" },
332 { "pci-serial-2x", "prog_if", "0" },
333 { "pci-serial-4x", "prog_if", "0" },
334 { "virtio-net-pci", "guest_announce", "off" },
335 { "ICH9-LPC", "memory-hotplug-support", "off" },
336 };
337 const size_t pc_compat_2_0_len = G_N_ELEMENTS(pc_compat_2_0);
338
339 GlobalProperty pc_compat_1_7[] = {
340 PC_CPU_MODEL_IDS("1.7.0")
341 { TYPE_USB_DEVICE, "msos-desc", "no" },
342 { "PIIX4_PM", ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, "off" },
343 { "hpet", HPET_INTCAP, "4" },
344 };
345 const size_t pc_compat_1_7_len = G_N_ELEMENTS(pc_compat_1_7);
346
347 GlobalProperty pc_compat_1_6[] = {
348 PC_CPU_MODEL_IDS("1.6.0")
349 { "e1000", "mitigation", "off" },
350 { "qemu64-" TYPE_X86_CPU, "model", "2" },
351 { "qemu32-" TYPE_X86_CPU, "model", "3" },
352 { "i440FX-pcihost", "short_root_bus", "1" },
353 { "q35-pcihost", "short_root_bus", "1" },
354 };
355 const size_t pc_compat_1_6_len = G_N_ELEMENTS(pc_compat_1_6);
356
357 GlobalProperty pc_compat_1_5[] = {
358 PC_CPU_MODEL_IDS("1.5.0")
359 { "Conroe-" TYPE_X86_CPU, "model", "2" },
360 { "Conroe-" TYPE_X86_CPU, "min-level", "2" },
361 { "Penryn-" TYPE_X86_CPU, "model", "2" },
362 { "Penryn-" TYPE_X86_CPU, "min-level", "2" },
363 { "Nehalem-" TYPE_X86_CPU, "model", "2" },
364 { "Nehalem-" TYPE_X86_CPU, "min-level", "2" },
365 { "virtio-net-pci", "any_layout", "off" },
366 { TYPE_X86_CPU, "pmu", "on" },
367 { "i440FX-pcihost", "short_root_bus", "0" },
368 { "q35-pcihost", "short_root_bus", "0" },
369 };
370 const size_t pc_compat_1_5_len = G_N_ELEMENTS(pc_compat_1_5);
371
372 GlobalProperty pc_compat_1_4[] = {
373 PC_CPU_MODEL_IDS("1.4.0")
374 { "scsi-hd", "discard_granularity", "0" },
375 { "scsi-cd", "discard_granularity", "0" },
376 { "ide-hd", "discard_granularity", "0" },
377 { "ide-cd", "discard_granularity", "0" },
378 { "virtio-blk-pci", "discard_granularity", "0" },
379 /* DEV_NVECTORS_UNSPECIFIED as a uint32_t string: */
380 { "virtio-serial-pci", "vectors", "0xFFFFFFFF" },
381 { "virtio-net-pci", "ctrl_guest_offloads", "off" },
382 { "e1000", "romfile", "pxe-e1000.rom" },
383 { "ne2k_pci", "romfile", "pxe-ne2k_pci.rom" },
384 { "pcnet", "romfile", "pxe-pcnet.rom" },
385 { "rtl8139", "romfile", "pxe-rtl8139.rom" },
386 { "virtio-net-pci", "romfile", "pxe-virtio.rom" },
387 { "486-" TYPE_X86_CPU, "model", "0" },
388 { "n270" "-" TYPE_X86_CPU, "movbe", "off" },
389 { "Westmere" "-" TYPE_X86_CPU, "pclmulqdq", "off" },
390 };
391 const size_t pc_compat_1_4_len = G_N_ELEMENTS(pc_compat_1_4);
392
393 GSIState *pc_gsi_create(qemu_irq **irqs, bool pci_enabled)
394 {
395 GSIState *s;
396
397 s = g_new0(GSIState, 1);
398 if (kvm_ioapic_in_kernel()) {
399 kvm_pc_setup_irq_routing(pci_enabled);
400 }
401 *irqs = qemu_allocate_irqs(gsi_handler, s, GSI_NUM_PINS);
402
403 return s;
404 }
405
406 static void ioport80_write(void *opaque, hwaddr addr, uint64_t data,
407 unsigned size)
408 {
409 }
410
411 static uint64_t ioport80_read(void *opaque, hwaddr addr, unsigned size)
412 {
413 return 0xffffffffffffffffULL;
414 }
415
416 /* MSDOS compatibility mode FPU exception support */
417 static void ioportF0_write(void *opaque, hwaddr addr, uint64_t data,
418 unsigned size)
419 {
420 if (tcg_enabled()) {
421 cpu_set_ignne();
422 }
423 }
424
425 static uint64_t ioportF0_read(void *opaque, hwaddr addr, unsigned size)
426 {
427 return 0xffffffffffffffffULL;
428 }
429
430 /* PC cmos mappings */
431
432 #define REG_EQUIPMENT_BYTE 0x14
433
434 static void cmos_init_hd(ISADevice *s, int type_ofs, int info_ofs,
435 int16_t cylinders, int8_t heads, int8_t sectors)
436 {
437 rtc_set_memory(s, type_ofs, 47);
438 rtc_set_memory(s, info_ofs, cylinders);
439 rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
440 rtc_set_memory(s, info_ofs + 2, heads);
441 rtc_set_memory(s, info_ofs + 3, 0xff);
442 rtc_set_memory(s, info_ofs + 4, 0xff);
443 rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
444 rtc_set_memory(s, info_ofs + 6, cylinders);
445 rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
446 rtc_set_memory(s, info_ofs + 8, sectors);
447 }
448
449 /* convert boot_device letter to something recognizable by the bios */
450 static int boot_device2nibble(char boot_device)
451 {
452 switch(boot_device) {
453 case 'a':
454 case 'b':
455 return 0x01; /* floppy boot */
456 case 'c':
457 return 0x02; /* hard drive boot */
458 case 'd':
459 return 0x03; /* CD-ROM boot */
460 case 'n':
461 return 0x04; /* Network boot */
462 }
463 return 0;
464 }
465
466 static void set_boot_dev(ISADevice *s, const char *boot_device, Error **errp)
467 {
468 #define PC_MAX_BOOT_DEVICES 3
469 int nbds, bds[3] = { 0, };
470 int i;
471
472 nbds = strlen(boot_device);
473 if (nbds > PC_MAX_BOOT_DEVICES) {
474 error_setg(errp, "Too many boot devices for PC");
475 return;
476 }
477 for (i = 0; i < nbds; i++) {
478 bds[i] = boot_device2nibble(boot_device[i]);
479 if (bds[i] == 0) {
480 error_setg(errp, "Invalid boot device for PC: '%c'",
481 boot_device[i]);
482 return;
483 }
484 }
485 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
486 rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
487 }
488
489 static void pc_boot_set(void *opaque, const char *boot_device, Error **errp)
490 {
491 set_boot_dev(opaque, boot_device, errp);
492 }
493
494 static void pc_cmos_init_floppy(ISADevice *rtc_state, ISADevice *floppy)
495 {
496 int val, nb, i;
497 FloppyDriveType fd_type[2] = { FLOPPY_DRIVE_TYPE_NONE,
498 FLOPPY_DRIVE_TYPE_NONE };
499
500 /* floppy type */
501 if (floppy) {
502 for (i = 0; i < 2; i++) {
503 fd_type[i] = isa_fdc_get_drive_type(floppy, i);
504 }
505 }
506 val = (cmos_get_fd_drive_type(fd_type[0]) << 4) |
507 cmos_get_fd_drive_type(fd_type[1]);
508 rtc_set_memory(rtc_state, 0x10, val);
509
510 val = rtc_get_memory(rtc_state, REG_EQUIPMENT_BYTE);
511 nb = 0;
512 if (fd_type[0] != FLOPPY_DRIVE_TYPE_NONE) {
513 nb++;
514 }
515 if (fd_type[1] != FLOPPY_DRIVE_TYPE_NONE) {
516 nb++;
517 }
518 switch (nb) {
519 case 0:
520 break;
521 case 1:
522 val |= 0x01; /* 1 drive, ready for boot */
523 break;
524 case 2:
525 val |= 0x41; /* 2 drives, ready for boot */
526 break;
527 }
528 rtc_set_memory(rtc_state, REG_EQUIPMENT_BYTE, val);
529 }
530
531 typedef struct pc_cmos_init_late_arg {
532 ISADevice *rtc_state;
533 BusState *idebus[2];
534 } pc_cmos_init_late_arg;
535
536 typedef struct check_fdc_state {
537 ISADevice *floppy;
538 bool multiple;
539 } CheckFdcState;
540
541 static int check_fdc(Object *obj, void *opaque)
542 {
543 CheckFdcState *state = opaque;
544 Object *fdc;
545 uint32_t iobase;
546 Error *local_err = NULL;
547
548 fdc = object_dynamic_cast(obj, TYPE_ISA_FDC);
549 if (!fdc) {
550 return 0;
551 }
552
553 iobase = object_property_get_uint(obj, "iobase", &local_err);
554 if (local_err || iobase != 0x3f0) {
555 error_free(local_err);
556 return 0;
557 }
558
559 if (state->floppy) {
560 state->multiple = true;
561 } else {
562 state->floppy = ISA_DEVICE(obj);
563 }
564 return 0;
565 }
566
567 static const char * const fdc_container_path[] = {
568 "/unattached", "/peripheral", "/peripheral-anon"
569 };
570
571 /*
572 * Locate the FDC at IO address 0x3f0, in order to configure the CMOS registers
573 * and ACPI objects.
574 */
575 static ISADevice *pc_find_fdc0(void)
576 {
577 int i;
578 Object *container;
579 CheckFdcState state = { 0 };
580
581 for (i = 0; i < ARRAY_SIZE(fdc_container_path); i++) {
582 container = container_get(qdev_get_machine(), fdc_container_path[i]);
583 object_child_foreach(container, check_fdc, &state);
584 }
585
586 if (state.multiple) {
587 warn_report("multiple floppy disk controllers with "
588 "iobase=0x3f0 have been found");
589 error_printf("the one being picked for CMOS setup might not reflect "
590 "your intent");
591 }
592
593 return state.floppy;
594 }
595
596 static void pc_cmos_init_late(void *opaque)
597 {
598 pc_cmos_init_late_arg *arg = opaque;
599 ISADevice *s = arg->rtc_state;
600 int16_t cylinders;
601 int8_t heads, sectors;
602 int val;
603 int i, trans;
604
605 val = 0;
606 if (arg->idebus[0] && ide_get_geometry(arg->idebus[0], 0,
607 &cylinders, &heads, &sectors) >= 0) {
608 cmos_init_hd(s, 0x19, 0x1b, cylinders, heads, sectors);
609 val |= 0xf0;
610 }
611 if (arg->idebus[0] && ide_get_geometry(arg->idebus[0], 1,
612 &cylinders, &heads, &sectors) >= 0) {
613 cmos_init_hd(s, 0x1a, 0x24, cylinders, heads, sectors);
614 val |= 0x0f;
615 }
616 rtc_set_memory(s, 0x12, val);
617
618 val = 0;
619 for (i = 0; i < 4; i++) {
620 /* NOTE: ide_get_geometry() returns the physical
621 geometry. It is always such that: 1 <= sects <= 63, 1
622 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
623 geometry can be different if a translation is done. */
624 if (arg->idebus[i / 2] &&
625 ide_get_geometry(arg->idebus[i / 2], i % 2,
626 &cylinders, &heads, &sectors) >= 0) {
627 trans = ide_get_bios_chs_trans(arg->idebus[i / 2], i % 2) - 1;
628 assert((trans & ~3) == 0);
629 val |= trans << (i * 2);
630 }
631 }
632 rtc_set_memory(s, 0x39, val);
633
634 pc_cmos_init_floppy(s, pc_find_fdc0());
635
636 qemu_unregister_reset(pc_cmos_init_late, opaque);
637 }
638
639 void pc_cmos_init(PCMachineState *pcms,
640 BusState *idebus0, BusState *idebus1,
641 ISADevice *s)
642 {
643 int val;
644 static pc_cmos_init_late_arg arg;
645 X86MachineState *x86ms = X86_MACHINE(pcms);
646
647 /* various important CMOS locations needed by PC/Bochs bios */
648
649 /* memory size */
650 /* base memory (first MiB) */
651 val = MIN(x86ms->below_4g_mem_size / KiB, 640);
652 rtc_set_memory(s, 0x15, val);
653 rtc_set_memory(s, 0x16, val >> 8);
654 /* extended memory (next 64MiB) */
655 if (x86ms->below_4g_mem_size > 1 * MiB) {
656 val = (x86ms->below_4g_mem_size - 1 * MiB) / KiB;
657 } else {
658 val = 0;
659 }
660 if (val > 65535)
661 val = 65535;
662 rtc_set_memory(s, 0x17, val);
663 rtc_set_memory(s, 0x18, val >> 8);
664 rtc_set_memory(s, 0x30, val);
665 rtc_set_memory(s, 0x31, val >> 8);
666 /* memory between 16MiB and 4GiB */
667 if (x86ms->below_4g_mem_size > 16 * MiB) {
668 val = (x86ms->below_4g_mem_size - 16 * MiB) / (64 * KiB);
669 } else {
670 val = 0;
671 }
672 if (val > 65535)
673 val = 65535;
674 rtc_set_memory(s, 0x34, val);
675 rtc_set_memory(s, 0x35, val >> 8);
676 /* memory above 4GiB */
677 val = x86ms->above_4g_mem_size / 65536;
678 rtc_set_memory(s, 0x5b, val);
679 rtc_set_memory(s, 0x5c, val >> 8);
680 rtc_set_memory(s, 0x5d, val >> 16);
681
682 object_property_add_link(OBJECT(pcms), "rtc_state",
683 TYPE_ISA_DEVICE,
684 (Object **)&x86ms->rtc,
685 object_property_allow_set_link,
686 OBJ_PROP_LINK_STRONG);
687 object_property_set_link(OBJECT(pcms), "rtc_state", OBJECT(s),
688 &error_abort);
689
690 set_boot_dev(s, MACHINE(pcms)->boot_config.order, &error_fatal);
691
692 val = 0;
693 val |= 0x02; /* FPU is there */
694 val |= 0x04; /* PS/2 mouse installed */
695 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
696
697 /* hard drives and FDC */
698 arg.rtc_state = s;
699 arg.idebus[0] = idebus0;
700 arg.idebus[1] = idebus1;
701 qemu_register_reset(pc_cmos_init_late, &arg);
702 }
703
704 static void handle_a20_line_change(void *opaque, int irq, int level)
705 {
706 X86CPU *cpu = opaque;
707
708 /* XXX: send to all CPUs ? */
709 /* XXX: add logic to handle multiple A20 line sources */
710 x86_cpu_set_a20(cpu, level);
711 }
712
713 #define NE2000_NB_MAX 6
714
715 static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
716 0x280, 0x380 };
717 static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
718
719 static void pc_init_ne2k_isa(ISABus *bus, NICInfo *nd)
720 {
721 static int nb_ne2k = 0;
722
723 if (nb_ne2k == NE2000_NB_MAX)
724 return;
725 isa_ne2000_init(bus, ne2000_io[nb_ne2k],
726 ne2000_irq[nb_ne2k], nd);
727 nb_ne2k++;
728 }
729
730 void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
731 {
732 X86CPU *cpu = opaque;
733
734 if (level) {
735 cpu_interrupt(CPU(cpu), CPU_INTERRUPT_SMI);
736 }
737 }
738
739 static
740 void pc_machine_done(Notifier *notifier, void *data)
741 {
742 PCMachineState *pcms = container_of(notifier,
743 PCMachineState, machine_done);
744 X86MachineState *x86ms = X86_MACHINE(pcms);
745
746 cxl_hook_up_pxb_registers(pcms->bus, &pcms->cxl_devices_state,
747 &error_fatal);
748
749 if (pcms->cxl_devices_state.is_enabled) {
750 cxl_fmws_link_targets(&pcms->cxl_devices_state, &error_fatal);
751 }
752
753 /* set the number of CPUs */
754 x86_rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
755
756 fw_cfg_add_extra_pci_roots(pcms->bus, x86ms->fw_cfg);
757
758 acpi_setup();
759 if (x86ms->fw_cfg) {
760 fw_cfg_build_smbios(MACHINE(pcms), x86ms->fw_cfg);
761 fw_cfg_build_feature_control(MACHINE(pcms), x86ms->fw_cfg);
762 /* update FW_CFG_NB_CPUS to account for -device added CPUs */
763 fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
764 }
765 }
766
767 void pc_guest_info_init(PCMachineState *pcms)
768 {
769 X86MachineState *x86ms = X86_MACHINE(pcms);
770
771 x86ms->apic_xrupt_override = true;
772 pcms->machine_done.notify = pc_machine_done;
773 qemu_add_machine_init_done_notifier(&pcms->machine_done);
774 }
775
776 /* setup pci memory address space mapping into system address space */
777 void pc_pci_as_mapping_init(Object *owner, MemoryRegion *system_memory,
778 MemoryRegion *pci_address_space)
779 {
780 /* Set to lower priority than RAM */
781 memory_region_add_subregion_overlap(system_memory, 0x0,
782 pci_address_space, -1);
783 }
784
785 void xen_load_linux(PCMachineState *pcms)
786 {
787 int i;
788 FWCfgState *fw_cfg;
789 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
790 X86MachineState *x86ms = X86_MACHINE(pcms);
791
792 assert(MACHINE(pcms)->kernel_filename != NULL);
793
794 fw_cfg = fw_cfg_init_io(FW_CFG_IO_BASE);
795 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
796 rom_set_fw(fw_cfg);
797
798 x86_load_linux(x86ms, fw_cfg, pcmc->acpi_data_size,
799 pcmc->pvh_enabled, pcmc->legacy_no_rng_seed);
800 for (i = 0; i < nb_option_roms; i++) {
801 assert(!strcmp(option_rom[i].name, "linuxboot.bin") ||
802 !strcmp(option_rom[i].name, "linuxboot_dma.bin") ||
803 !strcmp(option_rom[i].name, "pvh.bin") ||
804 !strcmp(option_rom[i].name, "multiboot.bin") ||
805 !strcmp(option_rom[i].name, "multiboot_dma.bin"));
806 rom_add_option(option_rom[i].name, option_rom[i].bootindex);
807 }
808 x86ms->fw_cfg = fw_cfg;
809 }
810
811 #define PC_ROM_MIN_VGA 0xc0000
812 #define PC_ROM_MIN_OPTION 0xc8000
813 #define PC_ROM_MAX 0xe0000
814 #define PC_ROM_ALIGN 0x800
815 #define PC_ROM_SIZE (PC_ROM_MAX - PC_ROM_MIN_VGA)
816
817 void pc_memory_init(PCMachineState *pcms,
818 MemoryRegion *system_memory,
819 MemoryRegion *rom_memory,
820 MemoryRegion **ram_memory)
821 {
822 int linux_boot, i;
823 MemoryRegion *option_rom_mr;
824 MemoryRegion *ram_below_4g, *ram_above_4g;
825 FWCfgState *fw_cfg;
826 MachineState *machine = MACHINE(pcms);
827 MachineClass *mc = MACHINE_GET_CLASS(machine);
828 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
829 X86MachineState *x86ms = X86_MACHINE(pcms);
830 hwaddr cxl_base, cxl_resv_end = 0;
831
832 assert(machine->ram_size == x86ms->below_4g_mem_size +
833 x86ms->above_4g_mem_size);
834
835 linux_boot = (machine->kernel_filename != NULL);
836
837 /*
838 * Split single memory region and use aliases to address portions of it,
839 * done for backwards compatibility with older qemus.
840 */
841 *ram_memory = machine->ram;
842 ram_below_4g = g_malloc(sizeof(*ram_below_4g));
843 memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram,
844 0, x86ms->below_4g_mem_size);
845 memory_region_add_subregion(system_memory, 0, ram_below_4g);
846 e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM);
847 if (x86ms->above_4g_mem_size > 0) {
848 ram_above_4g = g_malloc(sizeof(*ram_above_4g));
849 memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g",
850 machine->ram,
851 x86ms->below_4g_mem_size,
852 x86ms->above_4g_mem_size);
853 memory_region_add_subregion(system_memory, x86ms->above_4g_mem_start,
854 ram_above_4g);
855 e820_add_entry(x86ms->above_4g_mem_start, x86ms->above_4g_mem_size,
856 E820_RAM);
857 }
858
859 if (pcms->sgx_epc.size != 0) {
860 e820_add_entry(pcms->sgx_epc.base, pcms->sgx_epc.size, E820_RESERVED);
861 }
862
863 if (!pcmc->has_reserved_memory &&
864 (machine->ram_slots ||
865 (machine->maxram_size > machine->ram_size))) {
866
867 error_report("\"-memory 'slots|maxmem'\" is not supported by: %s",
868 mc->name);
869 exit(EXIT_FAILURE);
870 }
871
872 /* always allocate the device memory information */
873 machine->device_memory = g_malloc0(sizeof(*machine->device_memory));
874
875 /* initialize device memory address space */
876 if (pcmc->has_reserved_memory &&
877 (machine->ram_size < machine->maxram_size)) {
878 ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size;
879
880 if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) {
881 error_report("unsupported amount of memory slots: %"PRIu64,
882 machine->ram_slots);
883 exit(EXIT_FAILURE);
884 }
885
886 if (QEMU_ALIGN_UP(machine->maxram_size,
887 TARGET_PAGE_SIZE) != machine->maxram_size) {
888 error_report("maximum memory size must by aligned to multiple of "
889 "%d bytes", TARGET_PAGE_SIZE);
890 exit(EXIT_FAILURE);
891 }
892
893 if (pcms->sgx_epc.size != 0) {
894 machine->device_memory->base = sgx_epc_above_4g_end(&pcms->sgx_epc);
895 } else {
896 machine->device_memory->base =
897 x86ms->above_4g_mem_start + x86ms->above_4g_mem_size;
898 }
899
900 machine->device_memory->base =
901 ROUND_UP(machine->device_memory->base, 1 * GiB);
902
903 if (pcmc->enforce_aligned_dimm) {
904 /* size device region assuming 1G page max alignment per slot */
905 device_mem_size += (1 * GiB) * machine->ram_slots;
906 }
907
908 if ((machine->device_memory->base + device_mem_size) <
909 device_mem_size) {
910 error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT,
911 machine->maxram_size);
912 exit(EXIT_FAILURE);
913 }
914
915 memory_region_init(&machine->device_memory->mr, OBJECT(pcms),
916 "device-memory", device_mem_size);
917 memory_region_add_subregion(system_memory, machine->device_memory->base,
918 &machine->device_memory->mr);
919 }
920
921 if (pcms->cxl_devices_state.is_enabled) {
922 MemoryRegion *mr = &pcms->cxl_devices_state.host_mr;
923 hwaddr cxl_size = MiB;
924
925 if (pcmc->has_reserved_memory && machine->device_memory->base) {
926 cxl_base = machine->device_memory->base
927 + memory_region_size(&machine->device_memory->mr);
928 } else if (pcms->sgx_epc.size != 0) {
929 cxl_base = sgx_epc_above_4g_end(&pcms->sgx_epc);
930 } else {
931 cxl_base = x86ms->above_4g_mem_start + x86ms->above_4g_mem_size;
932 }
933
934 e820_add_entry(cxl_base, cxl_size, E820_RESERVED);
935 memory_region_init(mr, OBJECT(machine), "cxl_host_reg", cxl_size);
936 memory_region_add_subregion(system_memory, cxl_base, mr);
937 cxl_resv_end = cxl_base + cxl_size;
938 if (pcms->cxl_devices_state.fixed_windows) {
939 hwaddr cxl_fmw_base;
940 GList *it;
941
942 cxl_fmw_base = ROUND_UP(cxl_base + cxl_size, 256 * MiB);
943 for (it = pcms->cxl_devices_state.fixed_windows; it; it = it->next) {
944 CXLFixedWindow *fw = it->data;
945
946 fw->base = cxl_fmw_base;
947 memory_region_init_io(&fw->mr, OBJECT(machine), &cfmws_ops, fw,
948 "cxl-fixed-memory-region", fw->size);
949 memory_region_add_subregion(system_memory, fw->base, &fw->mr);
950 e820_add_entry(fw->base, fw->size, E820_RESERVED);
951 cxl_fmw_base += fw->size;
952 cxl_resv_end = cxl_fmw_base;
953 }
954 }
955 }
956
957 /* Initialize PC system firmware */
958 pc_system_firmware_init(pcms, rom_memory);
959
960 option_rom_mr = g_malloc(sizeof(*option_rom_mr));
961 memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE,
962 &error_fatal);
963 if (pcmc->pci_enabled) {
964 memory_region_set_readonly(option_rom_mr, true);
965 }
966 memory_region_add_subregion_overlap(rom_memory,
967 PC_ROM_MIN_VGA,
968 option_rom_mr,
969 1);
970
971 fw_cfg = fw_cfg_arch_create(machine,
972 x86ms->boot_cpus, x86ms->apic_id_limit);
973
974 rom_set_fw(fw_cfg);
975
976 if (pcmc->has_reserved_memory && machine->device_memory->base) {
977 uint64_t *val = g_malloc(sizeof(*val));
978 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
979 uint64_t res_mem_end = machine->device_memory->base;
980
981 if (!pcmc->broken_reserved_end) {
982 res_mem_end += memory_region_size(&machine->device_memory->mr);
983 }
984
985 if (pcms->cxl_devices_state.is_enabled) {
986 res_mem_end = cxl_resv_end;
987 }
988 *val = cpu_to_le64(ROUND_UP(res_mem_end, 1 * GiB));
989 fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val));
990 }
991
992 if (linux_boot) {
993 x86_load_linux(x86ms, fw_cfg, pcmc->acpi_data_size,
994 pcmc->pvh_enabled, pcmc->legacy_no_rng_seed);
995 }
996
997 for (i = 0; i < nb_option_roms; i++) {
998 rom_add_option(option_rom[i].name, option_rom[i].bootindex);
999 }
1000 x86ms->fw_cfg = fw_cfg;
1001
1002 /* Init default IOAPIC address space */
1003 x86ms->ioapic_as = &address_space_memory;
1004
1005 /* Init ACPI memory hotplug IO base address */
1006 pcms->memhp_io_base = ACPI_MEMORY_HOTPLUG_BASE;
1007 }
1008
1009 /*
1010 * The 64bit pci hole starts after "above 4G RAM" and
1011 * potentially the space reserved for memory hotplug.
1012 */
1013 uint64_t pc_pci_hole64_start(void)
1014 {
1015 PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
1016 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
1017 MachineState *ms = MACHINE(pcms);
1018 X86MachineState *x86ms = X86_MACHINE(pcms);
1019 uint64_t hole64_start = 0;
1020
1021 if (pcms->cxl_devices_state.host_mr.addr) {
1022 hole64_start = pcms->cxl_devices_state.host_mr.addr +
1023 memory_region_size(&pcms->cxl_devices_state.host_mr);
1024 if (pcms->cxl_devices_state.fixed_windows) {
1025 GList *it;
1026 for (it = pcms->cxl_devices_state.fixed_windows; it; it = it->next) {
1027 CXLFixedWindow *fw = it->data;
1028 hole64_start = fw->mr.addr + memory_region_size(&fw->mr);
1029 }
1030 }
1031 } else if (pcmc->has_reserved_memory && ms->device_memory->base) {
1032 hole64_start = ms->device_memory->base;
1033 if (!pcmc->broken_reserved_end) {
1034 hole64_start += memory_region_size(&ms->device_memory->mr);
1035 }
1036 } else if (pcms->sgx_epc.size != 0) {
1037 hole64_start = sgx_epc_above_4g_end(&pcms->sgx_epc);
1038 } else {
1039 hole64_start = x86ms->above_4g_mem_start + x86ms->above_4g_mem_size;
1040 }
1041
1042 return ROUND_UP(hole64_start, 1 * GiB);
1043 }
1044
1045 DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus)
1046 {
1047 DeviceState *dev = NULL;
1048
1049 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_VGA);
1050 if (pci_bus) {
1051 PCIDevice *pcidev = pci_vga_init(pci_bus);
1052 dev = pcidev ? &pcidev->qdev : NULL;
1053 } else if (isa_bus) {
1054 ISADevice *isadev = isa_vga_init(isa_bus);
1055 dev = isadev ? DEVICE(isadev) : NULL;
1056 }
1057 rom_reset_order_override();
1058 return dev;
1059 }
1060
1061 static const MemoryRegionOps ioport80_io_ops = {
1062 .write = ioport80_write,
1063 .read = ioport80_read,
1064 .endianness = DEVICE_NATIVE_ENDIAN,
1065 .impl = {
1066 .min_access_size = 1,
1067 .max_access_size = 1,
1068 },
1069 };
1070
1071 static const MemoryRegionOps ioportF0_io_ops = {
1072 .write = ioportF0_write,
1073 .read = ioportF0_read,
1074 .endianness = DEVICE_NATIVE_ENDIAN,
1075 .impl = {
1076 .min_access_size = 1,
1077 .max_access_size = 1,
1078 },
1079 };
1080
1081 static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl,
1082 bool create_i8042, bool no_vmport)
1083 {
1084 int i;
1085 DriveInfo *fd[MAX_FD];
1086 qemu_irq *a20_line;
1087 ISADevice *fdc, *i8042, *port92, *vmmouse;
1088
1089 serial_hds_isa_init(isa_bus, 0, MAX_ISA_SERIAL_PORTS);
1090 parallel_hds_isa_init(isa_bus, MAX_PARALLEL_PORTS);
1091
1092 for (i = 0; i < MAX_FD; i++) {
1093 fd[i] = drive_get(IF_FLOPPY, 0, i);
1094 create_fdctrl |= !!fd[i];
1095 }
1096 if (create_fdctrl) {
1097 fdc = isa_new(TYPE_ISA_FDC);
1098 if (fdc) {
1099 isa_realize_and_unref(fdc, isa_bus, &error_fatal);
1100 isa_fdc_init_drives(fdc, fd);
1101 }
1102 }
1103
1104 if (!create_i8042) {
1105 return;
1106 }
1107
1108 i8042 = isa_create_simple(isa_bus, TYPE_I8042);
1109 if (!no_vmport) {
1110 isa_create_simple(isa_bus, TYPE_VMPORT);
1111 vmmouse = isa_try_new("vmmouse");
1112 } else {
1113 vmmouse = NULL;
1114 }
1115 if (vmmouse) {
1116 object_property_set_link(OBJECT(vmmouse), TYPE_I8042, OBJECT(i8042),
1117 &error_abort);
1118 isa_realize_and_unref(vmmouse, isa_bus, &error_fatal);
1119 }
1120 port92 = isa_create_simple(isa_bus, TYPE_PORT92);
1121
1122 a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
1123 i8042_setup_a20_line(i8042, a20_line[0]);
1124 qdev_connect_gpio_out_named(DEVICE(port92),
1125 PORT92_A20_LINE, 0, a20_line[1]);
1126 g_free(a20_line);
1127 }
1128
1129 void pc_basic_device_init(struct PCMachineState *pcms,
1130 ISABus *isa_bus, qemu_irq *gsi,
1131 ISADevice **rtc_state,
1132 bool create_fdctrl,
1133 uint32_t hpet_irqs)
1134 {
1135 int i;
1136 DeviceState *hpet = NULL;
1137 int pit_isa_irq = 0;
1138 qemu_irq pit_alt_irq = NULL;
1139 qemu_irq rtc_irq = NULL;
1140 ISADevice *pit = NULL;
1141 MemoryRegion *ioport80_io = g_new(MemoryRegion, 1);
1142 MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1);
1143 X86MachineState *x86ms = X86_MACHINE(pcms);
1144
1145 memory_region_init_io(ioport80_io, NULL, &ioport80_io_ops, NULL, "ioport80", 1);
1146 memory_region_add_subregion(isa_bus->address_space_io, 0x80, ioport80_io);
1147
1148 memory_region_init_io(ioportF0_io, NULL, &ioportF0_io_ops, NULL, "ioportF0", 1);
1149 memory_region_add_subregion(isa_bus->address_space_io, 0xf0, ioportF0_io);
1150
1151 /*
1152 * Check if an HPET shall be created.
1153 *
1154 * Without KVM_CAP_PIT_STATE2, we cannot switch off the in-kernel PIT
1155 * when the HPET wants to take over. Thus we have to disable the latter.
1156 */
1157 if (pcms->hpet_enabled && (!kvm_irqchip_in_kernel() ||
1158 kvm_has_pit_state2())) {
1159 hpet = qdev_try_new(TYPE_HPET);
1160 if (!hpet) {
1161 error_report("couldn't create HPET device");
1162 exit(1);
1163 }
1164 /*
1165 * For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-1.7 and
1166 * earlier, use IRQ2 for compat. Otherwise, use IRQ16~23, IRQ8 and
1167 * IRQ2.
1168 */
1169 uint8_t compat = object_property_get_uint(OBJECT(hpet),
1170 HPET_INTCAP, NULL);
1171 if (!compat) {
1172 qdev_prop_set_uint32(hpet, HPET_INTCAP, hpet_irqs);
1173 }
1174 sysbus_realize_and_unref(SYS_BUS_DEVICE(hpet), &error_fatal);
1175 sysbus_mmio_map(SYS_BUS_DEVICE(hpet), 0, HPET_BASE);
1176
1177 for (i = 0; i < GSI_NUM_PINS; i++) {
1178 sysbus_connect_irq(SYS_BUS_DEVICE(hpet), i, gsi[i]);
1179 }
1180 pit_isa_irq = -1;
1181 pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT);
1182 rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT);
1183 }
1184 *rtc_state = mc146818_rtc_init(isa_bus, 2000, rtc_irq);
1185
1186 qemu_register_boot_set(pc_boot_set, *rtc_state);
1187
1188 if (!xen_enabled() &&
1189 (x86ms->pit == ON_OFF_AUTO_AUTO || x86ms->pit == ON_OFF_AUTO_ON)) {
1190 if (kvm_pit_in_kernel()) {
1191 pit = kvm_pit_init(isa_bus, 0x40);
1192 } else {
1193 pit = i8254_pit_init(isa_bus, 0x40, pit_isa_irq, pit_alt_irq);
1194 }
1195 if (hpet) {
1196 /* connect PIT to output control line of the HPET */
1197 qdev_connect_gpio_out(hpet, 0, qdev_get_gpio_in(DEVICE(pit), 0));
1198 }
1199 pcspk_init(pcms->pcspk, isa_bus, pit);
1200 }
1201
1202 i8257_dma_init(isa_bus, 0);
1203
1204 /* Super I/O */
1205 pc_superio_init(isa_bus, create_fdctrl, pcms->i8042_enabled,
1206 pcms->vmport != ON_OFF_AUTO_ON);
1207 }
1208
1209 void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus)
1210 {
1211 int i;
1212
1213 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_NIC);
1214 for (i = 0; i < nb_nics; i++) {
1215 NICInfo *nd = &nd_table[i];
1216 const char *model = nd->model ? nd->model : pcmc->default_nic_model;
1217
1218 if (g_str_equal(model, "ne2k_isa")) {
1219 pc_init_ne2k_isa(isa_bus, nd);
1220 } else {
1221 pci_nic_init_nofail(nd, pci_bus, model, NULL);
1222 }
1223 }
1224 rom_reset_order_override();
1225 }
1226
1227 void pc_i8259_create(ISABus *isa_bus, qemu_irq *i8259_irqs)
1228 {
1229 qemu_irq *i8259;
1230
1231 if (kvm_pic_in_kernel()) {
1232 i8259 = kvm_i8259_init(isa_bus);
1233 } else if (xen_enabled()) {
1234 i8259 = xen_interrupt_controller_init();
1235 } else {
1236 i8259 = i8259_init(isa_bus, x86_allocate_cpu_irq());
1237 }
1238
1239 for (size_t i = 0; i < ISA_NUM_IRQS; i++) {
1240 i8259_irqs[i] = i8259[i];
1241 }
1242
1243 g_free(i8259);
1244 }
1245
1246 static void pc_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
1247 Error **errp)
1248 {
1249 const PCMachineState *pcms = PC_MACHINE(hotplug_dev);
1250 const X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
1251 const PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
1252 const MachineState *ms = MACHINE(hotplug_dev);
1253 const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
1254 const uint64_t legacy_align = TARGET_PAGE_SIZE;
1255 Error *local_err = NULL;
1256
1257 /*
1258 * When -no-acpi is used with Q35 machine type, no ACPI is built,
1259 * but pcms->acpi_dev is still created. Check !acpi_enabled in
1260 * addition to cover this case.
1261 */
1262 if (!x86ms->acpi_dev || !x86_machine_is_acpi_enabled(x86ms)) {
1263 error_setg(errp,
1264 "memory hotplug is not enabled: missing acpi device or acpi disabled");
1265 return;
1266 }
1267
1268 if (is_nvdimm && !ms->nvdimms_state->is_enabled) {
1269 error_setg(errp, "nvdimm is not enabled: missing 'nvdimm' in '-M'");
1270 return;
1271 }
1272
1273 hotplug_handler_pre_plug(x86ms->acpi_dev, dev, &local_err);
1274 if (local_err) {
1275 error_propagate(errp, local_err);
1276 return;
1277 }
1278
1279 pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev),
1280 pcmc->enforce_aligned_dimm ? NULL : &legacy_align, errp);
1281 }
1282
1283 static void pc_memory_plug(HotplugHandler *hotplug_dev,
1284 DeviceState *dev, Error **errp)
1285 {
1286 PCMachineState *pcms = PC_MACHINE(hotplug_dev);
1287 X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
1288 MachineState *ms = MACHINE(hotplug_dev);
1289 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
1290
1291 pc_dimm_plug(PC_DIMM(dev), MACHINE(pcms));
1292
1293 if (is_nvdimm) {
1294 nvdimm_plug(ms->nvdimms_state);
1295 }
1296
1297 hotplug_handler_plug(x86ms->acpi_dev, dev, &error_abort);
1298 }
1299
1300 static void pc_memory_unplug_request(HotplugHandler *hotplug_dev,
1301 DeviceState *dev, Error **errp)
1302 {
1303 X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
1304
1305 /*
1306 * When -no-acpi is used with Q35 machine type, no ACPI is built,
1307 * but pcms->acpi_dev is still created. Check !acpi_enabled in
1308 * addition to cover this case.
1309 */
1310 if (!x86ms->acpi_dev || !x86_machine_is_acpi_enabled(x86ms)) {
1311 error_setg(errp,
1312 "memory hotplug is not enabled: missing acpi device or acpi disabled");
1313 return;
1314 }
1315
1316 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
1317 error_setg(errp, "nvdimm device hot unplug is not supported yet.");
1318 return;
1319 }
1320
1321 hotplug_handler_unplug_request(x86ms->acpi_dev, dev,
1322 errp);
1323 }
1324
1325 static void pc_memory_unplug(HotplugHandler *hotplug_dev,
1326 DeviceState *dev, Error **errp)
1327 {
1328 PCMachineState *pcms = PC_MACHINE(hotplug_dev);
1329 X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
1330 Error *local_err = NULL;
1331
1332 hotplug_handler_unplug(x86ms->acpi_dev, dev, &local_err);
1333 if (local_err) {
1334 goto out;
1335 }
1336
1337 pc_dimm_unplug(PC_DIMM(dev), MACHINE(pcms));
1338 qdev_unrealize(dev);
1339 out:
1340 error_propagate(errp, local_err);
1341 }
1342
1343 static void pc_virtio_md_pci_pre_plug(HotplugHandler *hotplug_dev,
1344 DeviceState *dev, Error **errp)
1345 {
1346 HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
1347 Error *local_err = NULL;
1348
1349 if (!hotplug_dev2 && dev->hotplugged) {
1350 /*
1351 * Without a bus hotplug handler, we cannot control the plug/unplug
1352 * order. We should never reach this point when hotplugging on x86,
1353 * however, better add a safety net.
1354 */
1355 error_setg(errp, "hotplug of virtio based memory devices not supported"
1356 " on this bus.");
1357 return;
1358 }
1359 /*
1360 * First, see if we can plug this memory device at all. If that
1361 * succeeds, branch of to the actual hotplug handler.
1362 */
1363 memory_device_pre_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev), NULL,
1364 &local_err);
1365 if (!local_err && hotplug_dev2) {
1366 hotplug_handler_pre_plug(hotplug_dev2, dev, &local_err);
1367 }
1368 error_propagate(errp, local_err);
1369 }
1370
1371 static void pc_virtio_md_pci_plug(HotplugHandler *hotplug_dev,
1372 DeviceState *dev, Error **errp)
1373 {
1374 HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
1375 Error *local_err = NULL;
1376
1377 /*
1378 * Plug the memory device first and then branch off to the actual
1379 * hotplug handler. If that one fails, we can easily undo the memory
1380 * device bits.
1381 */
1382 memory_device_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
1383 if (hotplug_dev2) {
1384 hotplug_handler_plug(hotplug_dev2, dev, &local_err);
1385 if (local_err) {
1386 memory_device_unplug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
1387 }
1388 }
1389 error_propagate(errp, local_err);
1390 }
1391
1392 static void pc_virtio_md_pci_unplug_request(HotplugHandler *hotplug_dev,
1393 DeviceState *dev, Error **errp)
1394 {
1395 /* We don't support hot unplug of virtio based memory devices */
1396 error_setg(errp, "virtio based memory devices cannot be unplugged.");
1397 }
1398
1399 static void pc_virtio_md_pci_unplug(HotplugHandler *hotplug_dev,
1400 DeviceState *dev, Error **errp)
1401 {
1402 /* We don't support hot unplug of virtio based memory devices */
1403 }
1404
1405 static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
1406 DeviceState *dev, Error **errp)
1407 {
1408 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
1409 pc_memory_pre_plug(hotplug_dev, dev, errp);
1410 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
1411 x86_cpu_pre_plug(hotplug_dev, dev, errp);
1412 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
1413 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
1414 pc_virtio_md_pci_pre_plug(hotplug_dev, dev, errp);
1415 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
1416 /* Declare the APIC range as the reserved MSI region */
1417 char *resv_prop_str = g_strdup_printf("0xfee00000:0xfeefffff:%d",
1418 VIRTIO_IOMMU_RESV_MEM_T_MSI);
1419
1420 object_property_set_uint(OBJECT(dev), "len-reserved-regions", 1, errp);
1421 object_property_set_str(OBJECT(dev), "reserved-regions[0]",
1422 resv_prop_str, errp);
1423 g_free(resv_prop_str);
1424 }
1425
1426 if (object_dynamic_cast(OBJECT(dev), TYPE_X86_IOMMU_DEVICE) ||
1427 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
1428 PCMachineState *pcms = PC_MACHINE(hotplug_dev);
1429
1430 if (pcms->iommu) {
1431 error_setg(errp, "QEMU does not support multiple vIOMMUs "
1432 "for x86 yet.");
1433 return;
1434 }
1435 pcms->iommu = dev;
1436 }
1437 }
1438
1439 static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
1440 DeviceState *dev, Error **errp)
1441 {
1442 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
1443 pc_memory_plug(hotplug_dev, dev, errp);
1444 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
1445 x86_cpu_plug(hotplug_dev, dev, errp);
1446 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
1447 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
1448 pc_virtio_md_pci_plug(hotplug_dev, dev, errp);
1449 }
1450 }
1451
1452 static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
1453 DeviceState *dev, Error **errp)
1454 {
1455 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
1456 pc_memory_unplug_request(hotplug_dev, dev, errp);
1457 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
1458 x86_cpu_unplug_request_cb(hotplug_dev, dev, errp);
1459 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
1460 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
1461 pc_virtio_md_pci_unplug_request(hotplug_dev, dev, errp);
1462 } else {
1463 error_setg(errp, "acpi: device unplug request for not supported device"
1464 " type: %s", object_get_typename(OBJECT(dev)));
1465 }
1466 }
1467
1468 static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
1469 DeviceState *dev, Error **errp)
1470 {
1471 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
1472 pc_memory_unplug(hotplug_dev, dev, errp);
1473 } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
1474 x86_cpu_unplug_cb(hotplug_dev, dev, errp);
1475 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
1476 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
1477 pc_virtio_md_pci_unplug(hotplug_dev, dev, errp);
1478 } else {
1479 error_setg(errp, "acpi: device unplug for not supported device"
1480 " type: %s", object_get_typename(OBJECT(dev)));
1481 }
1482 }
1483
1484 static HotplugHandler *pc_get_hotplug_handler(MachineState *machine,
1485 DeviceState *dev)
1486 {
1487 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) ||
1488 object_dynamic_cast(OBJECT(dev), TYPE_CPU) ||
1489 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
1490 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI) ||
1491 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) ||
1492 object_dynamic_cast(OBJECT(dev), TYPE_X86_IOMMU_DEVICE)) {
1493 return HOTPLUG_HANDLER(machine);
1494 }
1495
1496 return NULL;
1497 }
1498
1499 static void
1500 pc_machine_get_device_memory_region_size(Object *obj, Visitor *v,
1501 const char *name, void *opaque,
1502 Error **errp)
1503 {
1504 MachineState *ms = MACHINE(obj);
1505 int64_t value = 0;
1506
1507 if (ms->device_memory) {
1508 value = memory_region_size(&ms->device_memory->mr);
1509 }
1510
1511 visit_type_int(v, name, &value, errp);
1512 }
1513
1514 static void pc_machine_get_vmport(Object *obj, Visitor *v, const char *name,
1515 void *opaque, Error **errp)
1516 {
1517 PCMachineState *pcms = PC_MACHINE(obj);
1518 OnOffAuto vmport = pcms->vmport;
1519
1520 visit_type_OnOffAuto(v, name, &vmport, errp);
1521 }
1522
1523 static void pc_machine_set_vmport(Object *obj, Visitor *v, const char *name,
1524 void *opaque, Error **errp)
1525 {
1526 PCMachineState *pcms = PC_MACHINE(obj);
1527
1528 visit_type_OnOffAuto(v, name, &pcms->vmport, errp);
1529 }
1530
1531 static bool pc_machine_get_smbus(Object *obj, Error **errp)
1532 {
1533 PCMachineState *pcms = PC_MACHINE(obj);
1534
1535 return pcms->smbus_enabled;
1536 }
1537
1538 static void pc_machine_set_smbus(Object *obj, bool value, Error **errp)
1539 {
1540 PCMachineState *pcms = PC_MACHINE(obj);
1541
1542 pcms->smbus_enabled = value;
1543 }
1544
1545 static bool pc_machine_get_sata(Object *obj, Error **errp)
1546 {
1547 PCMachineState *pcms = PC_MACHINE(obj);
1548
1549 return pcms->sata_enabled;
1550 }
1551
1552 static void pc_machine_set_sata(Object *obj, bool value, Error **errp)
1553 {
1554 PCMachineState *pcms = PC_MACHINE(obj);
1555
1556 pcms->sata_enabled = value;
1557 }
1558
1559 static bool pc_machine_get_hpet(Object *obj, Error **errp)
1560 {
1561 PCMachineState *pcms = PC_MACHINE(obj);
1562
1563 return pcms->hpet_enabled;
1564 }
1565
1566 static void pc_machine_set_hpet(Object *obj, bool value, Error **errp)
1567 {
1568 PCMachineState *pcms = PC_MACHINE(obj);
1569
1570 pcms->hpet_enabled = value;
1571 }
1572
1573 static bool pc_machine_get_i8042(Object *obj, Error **errp)
1574 {
1575 PCMachineState *pcms = PC_MACHINE(obj);
1576
1577 return pcms->i8042_enabled;
1578 }
1579
1580 static void pc_machine_set_i8042(Object *obj, bool value, Error **errp)
1581 {
1582 PCMachineState *pcms = PC_MACHINE(obj);
1583
1584 pcms->i8042_enabled = value;
1585 }
1586
1587 static bool pc_machine_get_default_bus_bypass_iommu(Object *obj, Error **errp)
1588 {
1589 PCMachineState *pcms = PC_MACHINE(obj);
1590
1591 return pcms->default_bus_bypass_iommu;
1592 }
1593
1594 static void pc_machine_set_default_bus_bypass_iommu(Object *obj, bool value,
1595 Error **errp)
1596 {
1597 PCMachineState *pcms = PC_MACHINE(obj);
1598
1599 pcms->default_bus_bypass_iommu = value;
1600 }
1601
1602 static void pc_machine_get_smbios_ep(Object *obj, Visitor *v, const char *name,
1603 void *opaque, Error **errp)
1604 {
1605 PCMachineState *pcms = PC_MACHINE(obj);
1606 SmbiosEntryPointType smbios_entry_point_type = pcms->smbios_entry_point_type;
1607
1608 visit_type_SmbiosEntryPointType(v, name, &smbios_entry_point_type, errp);
1609 }
1610
1611 static void pc_machine_set_smbios_ep(Object *obj, Visitor *v, const char *name,
1612 void *opaque, Error **errp)
1613 {
1614 PCMachineState *pcms = PC_MACHINE(obj);
1615
1616 visit_type_SmbiosEntryPointType(v, name, &pcms->smbios_entry_point_type, errp);
1617 }
1618
1619 static void pc_machine_get_max_ram_below_4g(Object *obj, Visitor *v,
1620 const char *name, void *opaque,
1621 Error **errp)
1622 {
1623 PCMachineState *pcms = PC_MACHINE(obj);
1624 uint64_t value = pcms->max_ram_below_4g;
1625
1626 visit_type_size(v, name, &value, errp);
1627 }
1628
1629 static void pc_machine_set_max_ram_below_4g(Object *obj, Visitor *v,
1630 const char *name, void *opaque,
1631 Error **errp)
1632 {
1633 PCMachineState *pcms = PC_MACHINE(obj);
1634 uint64_t value;
1635
1636 if (!visit_type_size(v, name, &value, errp)) {
1637 return;
1638 }
1639 if (value > 4 * GiB) {
1640 error_setg(errp,
1641 "Machine option 'max-ram-below-4g=%"PRIu64
1642 "' expects size less than or equal to 4G", value);
1643 return;
1644 }
1645
1646 if (value < 1 * MiB) {
1647 warn_report("Only %" PRIu64 " bytes of RAM below the 4GiB boundary,"
1648 "BIOS may not work with less than 1MiB", value);
1649 }
1650
1651 pcms->max_ram_below_4g = value;
1652 }
1653
1654 static void pc_machine_get_max_fw_size(Object *obj, Visitor *v,
1655 const char *name, void *opaque,
1656 Error **errp)
1657 {
1658 PCMachineState *pcms = PC_MACHINE(obj);
1659 uint64_t value = pcms->max_fw_size;
1660
1661 visit_type_size(v, name, &value, errp);
1662 }
1663
1664 static void pc_machine_set_max_fw_size(Object *obj, Visitor *v,
1665 const char *name, void *opaque,
1666 Error **errp)
1667 {
1668 PCMachineState *pcms = PC_MACHINE(obj);
1669 Error *error = NULL;
1670 uint64_t value;
1671
1672 visit_type_size(v, name, &value, &error);
1673 if (error) {
1674 error_propagate(errp, error);
1675 return;
1676 }
1677
1678 /*
1679 * We don't have a theoretically justifiable exact lower bound on the base
1680 * address of any flash mapping. In practice, the IO-APIC MMIO range is
1681 * [0xFEE00000..0xFEE01000] -- see IO_APIC_DEFAULT_ADDRESS --, leaving free
1682 * only 18MB-4KB below 4G. For now, restrict the cumulative mapping to 8MB in
1683 * size.
1684 */
1685 if (value > 16 * MiB) {
1686 error_setg(errp,
1687 "User specified max allowed firmware size %" PRIu64 " is "
1688 "greater than 16MiB. If combined firwmare size exceeds "
1689 "16MiB the system may not boot, or experience intermittent"
1690 "stability issues.",
1691 value);
1692 return;
1693 }
1694
1695 pcms->max_fw_size = value;
1696 }
1697
1698
1699 static void pc_machine_initfn(Object *obj)
1700 {
1701 PCMachineState *pcms = PC_MACHINE(obj);
1702
1703 #ifdef CONFIG_VMPORT
1704 pcms->vmport = ON_OFF_AUTO_AUTO;
1705 #else
1706 pcms->vmport = ON_OFF_AUTO_OFF;
1707 #endif /* CONFIG_VMPORT */
1708 pcms->max_ram_below_4g = 0; /* use default */
1709 pcms->smbios_entry_point_type = SMBIOS_ENTRY_POINT_TYPE_32;
1710
1711 /* acpi build is enabled by default if machine supports it */
1712 pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
1713 pcms->smbus_enabled = true;
1714 pcms->sata_enabled = true;
1715 pcms->i8042_enabled = true;
1716 pcms->max_fw_size = 8 * MiB;
1717 #ifdef CONFIG_HPET
1718 pcms->hpet_enabled = true;
1719 #endif
1720 pcms->default_bus_bypass_iommu = false;
1721
1722 pc_system_flash_create(pcms);
1723 pcms->pcspk = isa_new(TYPE_PC_SPEAKER);
1724 object_property_add_alias(OBJECT(pcms), "pcspk-audiodev",
1725 OBJECT(pcms->pcspk), "audiodev");
1726 cxl_machine_init(obj, &pcms->cxl_devices_state);
1727 }
1728
1729 static void pc_machine_reset(MachineState *machine)
1730 {
1731 CPUState *cs;
1732 X86CPU *cpu;
1733
1734 qemu_devices_reset();
1735
1736 /* Reset APIC after devices have been reset to cancel
1737 * any changes that qemu_devices_reset() might have done.
1738 */
1739 CPU_FOREACH(cs) {
1740 cpu = X86_CPU(cs);
1741
1742 if (cpu->apic_state) {
1743 device_legacy_reset(cpu->apic_state);
1744 }
1745 }
1746 }
1747
1748 static void pc_machine_wakeup(MachineState *machine)
1749 {
1750 cpu_synchronize_all_states();
1751 pc_machine_reset(machine);
1752 cpu_synchronize_all_post_reset();
1753 }
1754
1755 static bool pc_hotplug_allowed(MachineState *ms, DeviceState *dev, Error **errp)
1756 {
1757 X86IOMMUState *iommu = x86_iommu_get_default();
1758 IntelIOMMUState *intel_iommu;
1759
1760 if (iommu &&
1761 object_dynamic_cast((Object *)iommu, TYPE_INTEL_IOMMU_DEVICE) &&
1762 object_dynamic_cast((Object *)dev, "vfio-pci")) {
1763 intel_iommu = INTEL_IOMMU_DEVICE(iommu);
1764 if (!intel_iommu->caching_mode) {
1765 error_setg(errp, "Device assignment is not allowed without "
1766 "enabling caching-mode=on for Intel IOMMU.");
1767 return false;
1768 }
1769 }
1770
1771 return true;
1772 }
1773
1774 static void pc_machine_class_init(ObjectClass *oc, void *data)
1775 {
1776 MachineClass *mc = MACHINE_CLASS(oc);
1777 PCMachineClass *pcmc = PC_MACHINE_CLASS(oc);
1778 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
1779
1780 pcmc->pci_enabled = true;
1781 pcmc->has_acpi_build = true;
1782 pcmc->rsdp_in_ram = true;
1783 pcmc->smbios_defaults = true;
1784 pcmc->smbios_uuid_encoded = true;
1785 pcmc->gigabyte_align = true;
1786 pcmc->has_reserved_memory = true;
1787 pcmc->kvmclock_enabled = true;
1788 pcmc->enforce_aligned_dimm = true;
1789 /* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K reported
1790 * to be used at the moment, 32K should be enough for a while. */
1791 pcmc->acpi_data_size = 0x20000 + 0x8000;
1792 pcmc->pvh_enabled = true;
1793 pcmc->kvmclock_create_always = true;
1794 assert(!mc->get_hotplug_handler);
1795 mc->get_hotplug_handler = pc_get_hotplug_handler;
1796 mc->hotplug_allowed = pc_hotplug_allowed;
1797 mc->cpu_index_to_instance_props = x86_cpu_index_to_props;
1798 mc->get_default_cpu_node_id = x86_get_default_cpu_node_id;
1799 mc->possible_cpu_arch_ids = x86_possible_cpu_arch_ids;
1800 mc->auto_enable_numa_with_memhp = true;
1801 mc->auto_enable_numa_with_memdev = true;
1802 mc->has_hotpluggable_cpus = true;
1803 mc->default_boot_order = "cad";
1804 mc->block_default_type = IF_IDE;
1805 mc->max_cpus = 255;
1806 mc->reset = pc_machine_reset;
1807 mc->wakeup = pc_machine_wakeup;
1808 hc->pre_plug = pc_machine_device_pre_plug_cb;
1809 hc->plug = pc_machine_device_plug_cb;
1810 hc->unplug_request = pc_machine_device_unplug_request_cb;
1811 hc->unplug = pc_machine_device_unplug_cb;
1812 mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
1813 mc->nvdimm_supported = true;
1814 mc->smp_props.dies_supported = true;
1815 mc->default_ram_id = "pc.ram";
1816
1817 object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size",
1818 pc_machine_get_max_ram_below_4g, pc_machine_set_max_ram_below_4g,
1819 NULL, NULL);
1820 object_class_property_set_description(oc, PC_MACHINE_MAX_RAM_BELOW_4G,
1821 "Maximum ram below the 4G boundary (32bit boundary)");
1822
1823 object_class_property_add(oc, PC_MACHINE_DEVMEM_REGION_SIZE, "int",
1824 pc_machine_get_device_memory_region_size, NULL,
1825 NULL, NULL);
1826
1827 object_class_property_add(oc, PC_MACHINE_VMPORT, "OnOffAuto",
1828 pc_machine_get_vmport, pc_machine_set_vmport,
1829 NULL, NULL);
1830 object_class_property_set_description(oc, PC_MACHINE_VMPORT,
1831 "Enable vmport (pc & q35)");
1832
1833 object_class_property_add_bool(oc, PC_MACHINE_SMBUS,
1834 pc_machine_get_smbus, pc_machine_set_smbus);
1835 object_class_property_set_description(oc, PC_MACHINE_SMBUS,
1836 "Enable/disable system management bus");
1837
1838 object_class_property_add_bool(oc, PC_MACHINE_SATA,
1839 pc_machine_get_sata, pc_machine_set_sata);
1840 object_class_property_set_description(oc, PC_MACHINE_SATA,
1841 "Enable/disable Serial ATA bus");
1842
1843 object_class_property_add_bool(oc, "hpet",
1844 pc_machine_get_hpet, pc_machine_set_hpet);
1845 object_class_property_set_description(oc, "hpet",
1846 "Enable/disable high precision event timer emulation");
1847
1848 object_class_property_add_bool(oc, PC_MACHINE_I8042,
1849 pc_machine_get_i8042, pc_machine_set_i8042);
1850
1851 object_class_property_add_bool(oc, "default-bus-bypass-iommu",
1852 pc_machine_get_default_bus_bypass_iommu,
1853 pc_machine_set_default_bus_bypass_iommu);
1854
1855 object_class_property_add(oc, PC_MACHINE_MAX_FW_SIZE, "size",
1856 pc_machine_get_max_fw_size, pc_machine_set_max_fw_size,
1857 NULL, NULL);
1858 object_class_property_set_description(oc, PC_MACHINE_MAX_FW_SIZE,
1859 "Maximum combined firmware size");
1860
1861 object_class_property_add(oc, PC_MACHINE_SMBIOS_EP, "str",
1862 pc_machine_get_smbios_ep, pc_machine_set_smbios_ep,
1863 NULL, NULL);
1864 object_class_property_set_description(oc, PC_MACHINE_SMBIOS_EP,
1865 "SMBIOS Entry Point type [32, 64]");
1866 }
1867
1868 static const TypeInfo pc_machine_info = {
1869 .name = TYPE_PC_MACHINE,
1870 .parent = TYPE_X86_MACHINE,
1871 .abstract = true,
1872 .instance_size = sizeof(PCMachineState),
1873 .instance_init = pc_machine_initfn,
1874 .class_size = sizeof(PCMachineClass),
1875 .class_init = pc_machine_class_init,
1876 .interfaces = (InterfaceInfo[]) {
1877 { TYPE_HOTPLUG_HANDLER },
1878 { }
1879 },
1880 };
1881
1882 static void pc_machine_register_types(void)
1883 {
1884 type_register_static(&pc_machine_info);
1885 }
1886
1887 type_init(pc_machine_register_types)
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