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11#include "qemu/osdep.h"
12#include "qemu/units.h"
13
14#include "cpu.h"
15#include "hw/pci/pci.h"
16#include "hw/pci/pci_host.h"
17#include "hw/i386/pc.h"
18#include "hw/southbridge/piix.h"
19#include "hw/irq.h"
20#include "hw/hw.h"
21#include "hw/i386/apic-msidef.h"
22#include "hw/xen/xen_common.h"
23#include "hw/xen/xen-legacy-backend.h"
24#include "hw/xen/xen-bus.h"
25#include "hw/xen/xen-x86.h"
26#include "qapi/error.h"
27#include "qapi/qapi-commands-migration.h"
28#include "qemu/error-report.h"
29#include "qemu/main-loop.h"
30#include "qemu/range.h"
31#include "sysemu/runstate.h"
32#include "sysemu/sysemu.h"
33#include "sysemu/xen.h"
34#include "sysemu/xen-mapcache.h"
35#include "trace.h"
36
37#include <xen/hvm/ioreq.h>
38#include <xen/hvm/e820.h>
39
40
41
42#ifdef DEBUG_XEN_HVM
43#define DPRINTF(fmt, ...) \
44 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
45#else
46#define DPRINTF(fmt, ...) \
47 do { } while (0)
48#endif
49
50static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
51static MemoryRegion *framebuffer;
52static bool xen_in_migration;
53
54
55
56
57
58
59
60
61#ifndef IOREQ_TYPE_VMWARE_PORT
62#define IOREQ_TYPE_VMWARE_PORT 3
63struct vmware_regs {
64 uint32_t esi;
65 uint32_t edi;
66 uint32_t ebx;
67 uint32_t ecx;
68 uint32_t edx;
69};
70typedef struct vmware_regs vmware_regs_t;
71
72struct shared_vmport_iopage {
73 struct vmware_regs vcpu_vmport_regs[1];
74};
75typedef struct shared_vmport_iopage shared_vmport_iopage_t;
76#endif
77
78static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
79{
80 return shared_page->vcpu_ioreq[i].vp_eport;
81}
82static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
83{
84 return &shared_page->vcpu_ioreq[vcpu];
85}
86
87#define BUFFER_IO_MAX_DELAY 100
88
89typedef struct XenPhysmap {
90 hwaddr start_addr;
91 ram_addr_t size;
92 const char *name;
93 hwaddr phys_offset;
94
95 QLIST_ENTRY(XenPhysmap) list;
96} XenPhysmap;
97
98static QLIST_HEAD(, XenPhysmap) xen_physmap;
99
100typedef struct XenPciDevice {
101 PCIDevice *pci_dev;
102 uint32_t sbdf;
103 QLIST_ENTRY(XenPciDevice) entry;
104} XenPciDevice;
105
106typedef struct XenIOState {
107 ioservid_t ioservid;
108 shared_iopage_t *shared_page;
109 shared_vmport_iopage_t *shared_vmport_page;
110 buffered_iopage_t *buffered_io_page;
111 xenforeignmemory_resource_handle *fres;
112 QEMUTimer *buffered_io_timer;
113 CPUState **cpu_by_vcpu_id;
114
115 evtchn_port_t *ioreq_local_port;
116
117 evtchn_port_t bufioreq_remote_port;
118 evtchn_port_t bufioreq_local_port;
119
120 xenevtchn_handle *xce_handle;
121
122 int send_vcpu;
123
124 struct xs_handle *xenstore;
125 MemoryListener memory_listener;
126 MemoryListener io_listener;
127 QLIST_HEAD(, XenPciDevice) dev_list;
128 DeviceListener device_listener;
129 hwaddr free_phys_offset;
130 const XenPhysmap *log_for_dirtybit;
131
132 unsigned long *dirty_bitmap;
133
134 Notifier exit;
135 Notifier suspend;
136 Notifier wakeup;
137} XenIOState;
138
139
140
141int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
142{
143 return irq_num + (PCI_SLOT(pci_dev->devfn) << 2);
144}
145
146void xen_piix3_set_irq(void *opaque, int irq_num, int level)
147{
148 xen_set_pci_intx_level(xen_domid, 0, 0, irq_num >> 2,
149 irq_num & 3, level);
150}
151
152void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
153{
154 int i;
155
156
157 for (i = 0; i < len; i++) {
158 uint8_t v = (val >> (8 * i)) & 0xff;
159 if (v & 0x80) {
160 v = 0;
161 }
162 v &= 0xf;
163 if (((address + i) >= PIIX_PIRQCA) && ((address + i) <= PIIX_PIRQCD)) {
164 xen_set_pci_link_route(xen_domid, address + i - PIIX_PIRQCA, v);
165 }
166 }
167}
168
169int xen_is_pirq_msi(uint32_t msi_data)
170{
171
172
173
174 return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0;
175}
176
177void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
178{
179 xen_inject_msi(xen_domid, addr, data);
180}
181
182static void xen_suspend_notifier(Notifier *notifier, void *data)
183{
184 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
185}
186
187
188
189static void xen_set_irq(void *opaque, int irq, int level)
190{
191 xen_set_isa_irq_level(xen_domid, irq, level);
192}
193
194qemu_irq *xen_interrupt_controller_init(void)
195{
196 return qemu_allocate_irqs(xen_set_irq, NULL, 16);
197}
198
199
200
201static void xen_ram_init(PCMachineState *pcms,
202 ram_addr_t ram_size, MemoryRegion **ram_memory_p)
203{
204 X86MachineState *x86ms = X86_MACHINE(pcms);
205 MemoryRegion *sysmem = get_system_memory();
206 ram_addr_t block_len;
207 uint64_t user_lowmem =
208 object_property_get_uint(qdev_get_machine(),
209 PC_MACHINE_MAX_RAM_BELOW_4G,
210 &error_abort);
211
212
213
214
215 if (!user_lowmem) {
216 user_lowmem = HVM_BELOW_4G_RAM_END;
217 }
218 if (HVM_BELOW_4G_RAM_END <= user_lowmem) {
219 user_lowmem = HVM_BELOW_4G_RAM_END;
220 }
221
222 if (ram_size >= user_lowmem) {
223 x86ms->above_4g_mem_size = ram_size - user_lowmem;
224 x86ms->below_4g_mem_size = user_lowmem;
225 } else {
226 x86ms->above_4g_mem_size = 0;
227 x86ms->below_4g_mem_size = ram_size;
228 }
229 if (!x86ms->above_4g_mem_size) {
230 block_len = ram_size;
231 } else {
232
233
234
235
236 block_len = (4 * GiB) + x86ms->above_4g_mem_size;
237 }
238 memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
239 &error_fatal);
240 *ram_memory_p = &ram_memory;
241
242 memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
243 &ram_memory, 0, 0xa0000);
244 memory_region_add_subregion(sysmem, 0, &ram_640k);
245
246
247
248
249
250
251 memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
252 &ram_memory, 0xc0000,
253 x86ms->below_4g_mem_size - 0xc0000);
254 memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
255 if (x86ms->above_4g_mem_size > 0) {
256 memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
257 &ram_memory, 0x100000000ULL,
258 x86ms->above_4g_mem_size);
259 memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
260 }
261}
262
263void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
264 Error **errp)
265{
266 unsigned long nr_pfn;
267 xen_pfn_t *pfn_list;
268 int i;
269
270 if (runstate_check(RUN_STATE_INMIGRATE)) {
271
272 fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
273 " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
274 __func__, size, ram_addr);
275 return;
276 }
277
278 if (mr == &ram_memory) {
279 return;
280 }
281
282 trace_xen_ram_alloc(ram_addr, size);
283
284 nr_pfn = size >> TARGET_PAGE_BITS;
285 pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
286
287 for (i = 0; i < nr_pfn; i++) {
288 pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
289 }
290
291 if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
292 error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
293 ram_addr);
294 }
295
296 g_free(pfn_list);
297}
298
299static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size)
300{
301 XenPhysmap *physmap = NULL;
302
303 start_addr &= TARGET_PAGE_MASK;
304
305 QLIST_FOREACH(physmap, &xen_physmap, list) {
306 if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) {
307 return physmap;
308 }
309 }
310 return NULL;
311}
312
313static hwaddr xen_phys_offset_to_gaddr(hwaddr phys_offset, ram_addr_t size)
314{
315 hwaddr addr = phys_offset & TARGET_PAGE_MASK;
316 XenPhysmap *physmap = NULL;
317
318 QLIST_FOREACH(physmap, &xen_physmap, list) {
319 if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
320 return physmap->start_addr + (phys_offset - physmap->phys_offset);
321 }
322 }
323
324 return phys_offset;
325}
326
327#ifdef XEN_COMPAT_PHYSMAP
328static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap)
329{
330 char path[80], value[17];
331
332 snprintf(path, sizeof(path),
333 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
334 xen_domid, (uint64_t)physmap->phys_offset);
335 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->start_addr);
336 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
337 return -1;
338 }
339 snprintf(path, sizeof(path),
340 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
341 xen_domid, (uint64_t)physmap->phys_offset);
342 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->size);
343 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
344 return -1;
345 }
346 if (physmap->name) {
347 snprintf(path, sizeof(path),
348 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
349 xen_domid, (uint64_t)physmap->phys_offset);
350 if (!xs_write(state->xenstore, 0, path,
351 physmap->name, strlen(physmap->name))) {
352 return -1;
353 }
354 }
355 return 0;
356}
357#else
358static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap)
359{
360 return 0;
361}
362#endif
363
364static int xen_add_to_physmap(XenIOState *state,
365 hwaddr start_addr,
366 ram_addr_t size,
367 MemoryRegion *mr,
368 hwaddr offset_within_region)
369{
370 unsigned long nr_pages;
371 int rc = 0;
372 XenPhysmap *physmap = NULL;
373 hwaddr pfn, start_gpfn;
374 hwaddr phys_offset = memory_region_get_ram_addr(mr);
375 const char *mr_name;
376
377 if (get_physmapping(start_addr, size)) {
378 return 0;
379 }
380 if (size <= 0) {
381 return -1;
382 }
383
384
385
386
387
388 if (mr == framebuffer && start_addr > 0xbffff) {
389 goto go_physmap;
390 }
391 return -1;
392
393go_physmap:
394 DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
395 start_addr, start_addr + size);
396
397 mr_name = memory_region_name(mr);
398
399 physmap = g_malloc(sizeof(XenPhysmap));
400
401 physmap->start_addr = start_addr;
402 physmap->size = size;
403 physmap->name = mr_name;
404 physmap->phys_offset = phys_offset;
405
406 QLIST_INSERT_HEAD(&xen_physmap, physmap, list);
407
408 if (runstate_check(RUN_STATE_INMIGRATE)) {
409
410
411 uint8_t *p = xen_replace_cache_entry(phys_offset, start_addr, size);
412 assert(p && p == memory_region_get_ram_ptr(mr));
413
414 return 0;
415 }
416
417 pfn = phys_offset >> TARGET_PAGE_BITS;
418 start_gpfn = start_addr >> TARGET_PAGE_BITS;
419 nr_pages = size >> TARGET_PAGE_BITS;
420 rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, nr_pages, pfn,
421 start_gpfn);
422 if (rc) {
423 int saved_errno = errno;
424
425 error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx
426 " to GFN %"HWADDR_PRIx" failed: %s",
427 nr_pages, pfn, start_gpfn, strerror(saved_errno));
428 errno = saved_errno;
429 return -1;
430 }
431
432 rc = xendevicemodel_pin_memory_cacheattr(xen_dmod, xen_domid,
433 start_addr >> TARGET_PAGE_BITS,
434 (start_addr + size - 1) >> TARGET_PAGE_BITS,
435 XEN_DOMCTL_MEM_CACHEATTR_WB);
436 if (rc) {
437 error_report("pin_memory_cacheattr failed: %s", strerror(errno));
438 }
439 return xen_save_physmap(state, physmap);
440}
441
442static int xen_remove_from_physmap(XenIOState *state,
443 hwaddr start_addr,
444 ram_addr_t size)
445{
446 int rc = 0;
447 XenPhysmap *physmap = NULL;
448 hwaddr phys_offset = 0;
449
450 physmap = get_physmapping(start_addr, size);
451 if (physmap == NULL) {
452 return -1;
453 }
454
455 phys_offset = physmap->phys_offset;
456 size = physmap->size;
457
458 DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
459 "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
460
461 size >>= TARGET_PAGE_BITS;
462 start_addr >>= TARGET_PAGE_BITS;
463 phys_offset >>= TARGET_PAGE_BITS;
464 rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, size, start_addr,
465 phys_offset);
466 if (rc) {
467 int saved_errno = errno;
468
469 error_report("relocate_memory "RAM_ADDR_FMT" pages"
470 " from GFN %"HWADDR_PRIx
471 " to GFN %"HWADDR_PRIx" failed: %s",
472 size, start_addr, phys_offset, strerror(saved_errno));
473 errno = saved_errno;
474 return -1;
475 }
476
477 QLIST_REMOVE(physmap, list);
478 if (state->log_for_dirtybit == physmap) {
479 state->log_for_dirtybit = NULL;
480 g_free(state->dirty_bitmap);
481 state->dirty_bitmap = NULL;
482 }
483 g_free(physmap);
484
485 return 0;
486}
487
488static void xen_set_memory(struct MemoryListener *listener,
489 MemoryRegionSection *section,
490 bool add)
491{
492 XenIOState *state = container_of(listener, XenIOState, memory_listener);
493 hwaddr start_addr = section->offset_within_address_space;
494 ram_addr_t size = int128_get64(section->size);
495 bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
496 hvmmem_type_t mem_type;
497
498 if (section->mr == &ram_memory) {
499 return;
500 } else {
501 if (add) {
502 xen_map_memory_section(xen_domid, state->ioservid,
503 section);
504 } else {
505 xen_unmap_memory_section(xen_domid, state->ioservid,
506 section);
507 }
508 }
509
510 if (!memory_region_is_ram(section->mr)) {
511 return;
512 }
513
514 if (log_dirty != add) {
515 return;
516 }
517
518 trace_xen_client_set_memory(start_addr, size, log_dirty);
519
520 start_addr &= TARGET_PAGE_MASK;
521 size = TARGET_PAGE_ALIGN(size);
522
523 if (add) {
524 if (!memory_region_is_rom(section->mr)) {
525 xen_add_to_physmap(state, start_addr, size,
526 section->mr, section->offset_within_region);
527 } else {
528 mem_type = HVMMEM_ram_ro;
529 if (xen_set_mem_type(xen_domid, mem_type,
530 start_addr >> TARGET_PAGE_BITS,
531 size >> TARGET_PAGE_BITS)) {
532 DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx"\n",
533 start_addr);
534 }
535 }
536 } else {
537 if (xen_remove_from_physmap(state, start_addr, size) < 0) {
538 DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
539 }
540 }
541}
542
543static void xen_region_add(MemoryListener *listener,
544 MemoryRegionSection *section)
545{
546 memory_region_ref(section->mr);
547 xen_set_memory(listener, section, true);
548}
549
550static void xen_region_del(MemoryListener *listener,
551 MemoryRegionSection *section)
552{
553 xen_set_memory(listener, section, false);
554 memory_region_unref(section->mr);
555}
556
557static void xen_io_add(MemoryListener *listener,
558 MemoryRegionSection *section)
559{
560 XenIOState *state = container_of(listener, XenIOState, io_listener);
561 MemoryRegion *mr = section->mr;
562
563 if (mr->ops == &unassigned_io_ops) {
564 return;
565 }
566
567 memory_region_ref(mr);
568
569 xen_map_io_section(xen_domid, state->ioservid, section);
570}
571
572static void xen_io_del(MemoryListener *listener,
573 MemoryRegionSection *section)
574{
575 XenIOState *state = container_of(listener, XenIOState, io_listener);
576 MemoryRegion *mr = section->mr;
577
578 if (mr->ops == &unassigned_io_ops) {
579 return;
580 }
581
582 xen_unmap_io_section(xen_domid, state->ioservid, section);
583
584 memory_region_unref(mr);
585}
586
587static void xen_device_realize(DeviceListener *listener,
588 DeviceState *dev)
589{
590 XenIOState *state = container_of(listener, XenIOState, device_listener);
591
592 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
593 PCIDevice *pci_dev = PCI_DEVICE(dev);
594 XenPciDevice *xendev = g_new(XenPciDevice, 1);
595
596 xendev->pci_dev = pci_dev;
597 xendev->sbdf = PCI_BUILD_BDF(pci_dev_bus_num(pci_dev),
598 pci_dev->devfn);
599 QLIST_INSERT_HEAD(&state->dev_list, xendev, entry);
600
601 xen_map_pcidev(xen_domid, state->ioservid, pci_dev);
602 }
603}
604
605static void xen_device_unrealize(DeviceListener *listener,
606 DeviceState *dev)
607{
608 XenIOState *state = container_of(listener, XenIOState, device_listener);
609
610 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
611 PCIDevice *pci_dev = PCI_DEVICE(dev);
612 XenPciDevice *xendev, *next;
613
614 xen_unmap_pcidev(xen_domid, state->ioservid, pci_dev);
615
616 QLIST_FOREACH_SAFE(xendev, &state->dev_list, entry, next) {
617 if (xendev->pci_dev == pci_dev) {
618 QLIST_REMOVE(xendev, entry);
619 g_free(xendev);
620 break;
621 }
622 }
623 }
624}
625
626static void xen_sync_dirty_bitmap(XenIOState *state,
627 hwaddr start_addr,
628 ram_addr_t size)
629{
630 hwaddr npages = size >> TARGET_PAGE_BITS;
631 const int width = sizeof(unsigned long) * 8;
632 size_t bitmap_size = DIV_ROUND_UP(npages, width);
633 int rc, i, j;
634 const XenPhysmap *physmap = NULL;
635
636 physmap = get_physmapping(start_addr, size);
637 if (physmap == NULL) {
638
639 return;
640 }
641
642 if (state->log_for_dirtybit == NULL) {
643 state->log_for_dirtybit = physmap;
644 state->dirty_bitmap = g_new(unsigned long, bitmap_size);
645 } else if (state->log_for_dirtybit != physmap) {
646
647 return;
648 }
649
650 rc = xen_track_dirty_vram(xen_domid, start_addr >> TARGET_PAGE_BITS,
651 npages, state->dirty_bitmap);
652 if (rc < 0) {
653#ifndef ENODATA
654#define ENODATA ENOENT
655#endif
656 if (errno == ENODATA) {
657 memory_region_set_dirty(framebuffer, 0, size);
658 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
659 ", 0x" TARGET_FMT_plx "): %s\n",
660 start_addr, start_addr + size, strerror(errno));
661 }
662 return;
663 }
664
665 for (i = 0; i < bitmap_size; i++) {
666 unsigned long map = state->dirty_bitmap[i];
667 while (map != 0) {
668 j = ctzl(map);
669 map &= ~(1ul << j);
670 memory_region_set_dirty(framebuffer,
671 (i * width + j) * TARGET_PAGE_SIZE,
672 TARGET_PAGE_SIZE);
673 };
674 }
675}
676
677static void xen_log_start(MemoryListener *listener,
678 MemoryRegionSection *section,
679 int old, int new)
680{
681 XenIOState *state = container_of(listener, XenIOState, memory_listener);
682
683 if (new & ~old & (1 << DIRTY_MEMORY_VGA)) {
684 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
685 int128_get64(section->size));
686 }
687}
688
689static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section,
690 int old, int new)
691{
692 XenIOState *state = container_of(listener, XenIOState, memory_listener);
693
694 if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
695 state->log_for_dirtybit = NULL;
696 g_free(state->dirty_bitmap);
697 state->dirty_bitmap = NULL;
698
699 xen_track_dirty_vram(xen_domid, 0, 0, NULL);
700 }
701}
702
703static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section)
704{
705 XenIOState *state = container_of(listener, XenIOState, memory_listener);
706
707 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
708 int128_get64(section->size));
709}
710
711static void xen_log_global_start(MemoryListener *listener)
712{
713 if (xen_enabled()) {
714 xen_in_migration = true;
715 }
716}
717
718static void xen_log_global_stop(MemoryListener *listener)
719{
720 xen_in_migration = false;
721}
722
723static MemoryListener xen_memory_listener = {
724 .region_add = xen_region_add,
725 .region_del = xen_region_del,
726 .log_start = xen_log_start,
727 .log_stop = xen_log_stop,
728 .log_sync = xen_log_sync,
729 .log_global_start = xen_log_global_start,
730 .log_global_stop = xen_log_global_stop,
731 .priority = 10,
732};
733
734static MemoryListener xen_io_listener = {
735 .region_add = xen_io_add,
736 .region_del = xen_io_del,
737 .priority = 10,
738};
739
740static DeviceListener xen_device_listener = {
741 .realize = xen_device_realize,
742 .unrealize = xen_device_unrealize,
743};
744
745
746static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
747{
748 ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
749
750 if (req->state != STATE_IOREQ_READY) {
751 DPRINTF("I/O request not ready: "
752 "%x, ptr: %x, port: %"PRIx64", "
753 "data: %"PRIx64", count: %u, size: %u\n",
754 req->state, req->data_is_ptr, req->addr,
755 req->data, req->count, req->size);
756 return NULL;
757 }
758
759 xen_rmb();
760
761 req->state = STATE_IOREQ_INPROCESS;
762 return req;
763}
764
765
766
767
768static ioreq_t *cpu_get_ioreq(XenIOState *state)
769{
770 MachineState *ms = MACHINE(qdev_get_machine());
771 unsigned int max_cpus = ms->smp.max_cpus;
772 int i;
773 evtchn_port_t port;
774
775 port = xenevtchn_pending(state->xce_handle);
776 if (port == state->bufioreq_local_port) {
777 timer_mod(state->buffered_io_timer,
778 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
779 return NULL;
780 }
781
782 if (port != -1) {
783 for (i = 0; i < max_cpus; i++) {
784 if (state->ioreq_local_port[i] == port) {
785 break;
786 }
787 }
788
789 if (i == max_cpus) {
790 hw_error("Fatal error while trying to get io event!\n");
791 }
792
793
794 xenevtchn_unmask(state->xce_handle, port);
795
796
797 state->send_vcpu = i;
798 return cpu_get_ioreq_from_shared_memory(state, i);
799 }
800
801
802 return NULL;
803}
804
805static uint32_t do_inp(uint32_t addr, unsigned long size)
806{
807 switch (size) {
808 case 1:
809 return cpu_inb(addr);
810 case 2:
811 return cpu_inw(addr);
812 case 4:
813 return cpu_inl(addr);
814 default:
815 hw_error("inp: bad size: %04x %lx", addr, size);
816 }
817}
818
819static void do_outp(uint32_t addr,
820 unsigned long size, uint32_t val)
821{
822 switch (size) {
823 case 1:
824 return cpu_outb(addr, val);
825 case 2:
826 return cpu_outw(addr, val);
827 case 4:
828 return cpu_outl(addr, val);
829 default:
830 hw_error("outp: bad size: %04x %lx", addr, size);
831 }
832}
833
834
835
836
837
838
839
840
841
842
843static void rw_phys_req_item(hwaddr addr,
844 ioreq_t *req, uint32_t i, void *val, int rw)
845{
846
847
848
849 hwaddr offset = (hwaddr)req->size * i;
850 if (req->df) {
851 addr -= offset;
852 } else {
853 addr += offset;
854 }
855 cpu_physical_memory_rw(addr, val, req->size, rw);
856}
857
858static inline void read_phys_req_item(hwaddr addr,
859 ioreq_t *req, uint32_t i, void *val)
860{
861 rw_phys_req_item(addr, req, i, val, 0);
862}
863static inline void write_phys_req_item(hwaddr addr,
864 ioreq_t *req, uint32_t i, void *val)
865{
866 rw_phys_req_item(addr, req, i, val, 1);
867}
868
869
870static void cpu_ioreq_pio(ioreq_t *req)
871{
872 uint32_t i;
873
874 trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
875 req->data, req->count, req->size);
876
877 if (req->size > sizeof(uint32_t)) {
878 hw_error("PIO: bad size (%u)", req->size);
879 }
880
881 if (req->dir == IOREQ_READ) {
882 if (!req->data_is_ptr) {
883 req->data = do_inp(req->addr, req->size);
884 trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
885 req->size);
886 } else {
887 uint32_t tmp;
888
889 for (i = 0; i < req->count; i++) {
890 tmp = do_inp(req->addr, req->size);
891 write_phys_req_item(req->data, req, i, &tmp);
892 }
893 }
894 } else if (req->dir == IOREQ_WRITE) {
895 if (!req->data_is_ptr) {
896 trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
897 req->size);
898 do_outp(req->addr, req->size, req->data);
899 } else {
900 for (i = 0; i < req->count; i++) {
901 uint32_t tmp = 0;
902
903 read_phys_req_item(req->data, req, i, &tmp);
904 do_outp(req->addr, req->size, tmp);
905 }
906 }
907 }
908}
909
910static void cpu_ioreq_move(ioreq_t *req)
911{
912 uint32_t i;
913
914 trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
915 req->data, req->count, req->size);
916
917 if (req->size > sizeof(req->data)) {
918 hw_error("MMIO: bad size (%u)", req->size);
919 }
920
921 if (!req->data_is_ptr) {
922 if (req->dir == IOREQ_READ) {
923 for (i = 0; i < req->count; i++) {
924 read_phys_req_item(req->addr, req, i, &req->data);
925 }
926 } else if (req->dir == IOREQ_WRITE) {
927 for (i = 0; i < req->count; i++) {
928 write_phys_req_item(req->addr, req, i, &req->data);
929 }
930 }
931 } else {
932 uint64_t tmp;
933
934 if (req->dir == IOREQ_READ) {
935 for (i = 0; i < req->count; i++) {
936 read_phys_req_item(req->addr, req, i, &tmp);
937 write_phys_req_item(req->data, req, i, &tmp);
938 }
939 } else if (req->dir == IOREQ_WRITE) {
940 for (i = 0; i < req->count; i++) {
941 read_phys_req_item(req->data, req, i, &tmp);
942 write_phys_req_item(req->addr, req, i, &tmp);
943 }
944 }
945 }
946}
947
948static void cpu_ioreq_config(XenIOState *state, ioreq_t *req)
949{
950 uint32_t sbdf = req->addr >> 32;
951 uint32_t reg = req->addr;
952 XenPciDevice *xendev;
953
954 if (req->size != sizeof(uint8_t) && req->size != sizeof(uint16_t) &&
955 req->size != sizeof(uint32_t)) {
956 hw_error("PCI config access: bad size (%u)", req->size);
957 }
958
959 if (req->count != 1) {
960 hw_error("PCI config access: bad count (%u)", req->count);
961 }
962
963 QLIST_FOREACH(xendev, &state->dev_list, entry) {
964 if (xendev->sbdf != sbdf) {
965 continue;
966 }
967
968 if (!req->data_is_ptr) {
969 if (req->dir == IOREQ_READ) {
970 req->data = pci_host_config_read_common(
971 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
972 req->size);
973 trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
974 req->size, req->data);
975 } else if (req->dir == IOREQ_WRITE) {
976 trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
977 req->size, req->data);
978 pci_host_config_write_common(
979 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
980 req->data, req->size);
981 }
982 } else {
983 uint32_t tmp;
984
985 if (req->dir == IOREQ_READ) {
986 tmp = pci_host_config_read_common(
987 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
988 req->size);
989 trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
990 req->size, tmp);
991 write_phys_req_item(req->data, req, 0, &tmp);
992 } else if (req->dir == IOREQ_WRITE) {
993 read_phys_req_item(req->data, req, 0, &tmp);
994 trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
995 req->size, tmp);
996 pci_host_config_write_common(
997 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
998 tmp, req->size);
999 }
1000 }
1001 }
1002}
1003
1004static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
1005{
1006 X86CPU *cpu;
1007 CPUX86State *env;
1008
1009 cpu = X86_CPU(current_cpu);
1010 env = &cpu->env;
1011 env->regs[R_EAX] = req->data;
1012 env->regs[R_EBX] = vmport_regs->ebx;
1013 env->regs[R_ECX] = vmport_regs->ecx;
1014 env->regs[R_EDX] = vmport_regs->edx;
1015 env->regs[R_ESI] = vmport_regs->esi;
1016 env->regs[R_EDI] = vmport_regs->edi;
1017}
1018
1019static void regs_from_cpu(vmware_regs_t *vmport_regs)
1020{
1021 X86CPU *cpu = X86_CPU(current_cpu);
1022 CPUX86State *env = &cpu->env;
1023
1024 vmport_regs->ebx = env->regs[R_EBX];
1025 vmport_regs->ecx = env->regs[R_ECX];
1026 vmport_regs->edx = env->regs[R_EDX];
1027 vmport_regs->esi = env->regs[R_ESI];
1028 vmport_regs->edi = env->regs[R_EDI];
1029}
1030
1031static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
1032{
1033 vmware_regs_t *vmport_regs;
1034
1035 assert(state->shared_vmport_page);
1036 vmport_regs =
1037 &state->shared_vmport_page->vcpu_vmport_regs[state->send_vcpu];
1038 QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs));
1039
1040 current_cpu = state->cpu_by_vcpu_id[state->send_vcpu];
1041 regs_to_cpu(vmport_regs, req);
1042 cpu_ioreq_pio(req);
1043 regs_from_cpu(vmport_regs);
1044 current_cpu = NULL;
1045}
1046
1047static void handle_ioreq(XenIOState *state, ioreq_t *req)
1048{
1049 trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
1050 req->addr, req->data, req->count, req->size);
1051
1052 if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
1053 (req->size < sizeof (target_ulong))) {
1054 req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
1055 }
1056
1057 if (req->dir == IOREQ_WRITE)
1058 trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
1059 req->addr, req->data, req->count, req->size);
1060
1061 switch (req->type) {
1062 case IOREQ_TYPE_PIO:
1063 cpu_ioreq_pio(req);
1064 break;
1065 case IOREQ_TYPE_COPY:
1066 cpu_ioreq_move(req);
1067 break;
1068 case IOREQ_TYPE_VMWARE_PORT:
1069 handle_vmport_ioreq(state, req);
1070 break;
1071 case IOREQ_TYPE_TIMEOFFSET:
1072 break;
1073 case IOREQ_TYPE_INVALIDATE:
1074 xen_invalidate_map_cache();
1075 break;
1076 case IOREQ_TYPE_PCI_CONFIG:
1077 cpu_ioreq_config(state, req);
1078 break;
1079 default:
1080 hw_error("Invalid ioreq type 0x%x\n", req->type);
1081 }
1082 if (req->dir == IOREQ_READ) {
1083 trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
1084 req->addr, req->data, req->count, req->size);
1085 }
1086}
1087
1088static int handle_buffered_iopage(XenIOState *state)
1089{
1090 buffered_iopage_t *buf_page = state->buffered_io_page;
1091 buf_ioreq_t *buf_req = NULL;
1092 ioreq_t req;
1093 int qw;
1094
1095 if (!buf_page) {
1096 return 0;
1097 }
1098
1099 memset(&req, 0x00, sizeof(req));
1100 req.state = STATE_IOREQ_READY;
1101 req.count = 1;
1102 req.dir = IOREQ_WRITE;
1103
1104 for (;;) {
1105 uint32_t rdptr = buf_page->read_pointer, wrptr;
1106
1107 xen_rmb();
1108 wrptr = buf_page->write_pointer;
1109 xen_rmb();
1110 if (rdptr != buf_page->read_pointer) {
1111 continue;
1112 }
1113 if (rdptr == wrptr) {
1114 break;
1115 }
1116 buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
1117 req.size = 1U << buf_req->size;
1118 req.addr = buf_req->addr;
1119 req.data = buf_req->data;
1120 req.type = buf_req->type;
1121 xen_rmb();
1122 qw = (req.size == 8);
1123 if (qw) {
1124 if (rdptr + 1 == wrptr) {
1125 hw_error("Incomplete quad word buffered ioreq");
1126 }
1127 buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
1128 IOREQ_BUFFER_SLOT_NUM];
1129 req.data |= ((uint64_t)buf_req->data) << 32;
1130 xen_rmb();
1131 }
1132
1133 handle_ioreq(state, &req);
1134
1135
1136
1137
1138
1139 assert(req.state == STATE_IOREQ_READY);
1140 assert(req.count == 1);
1141 assert(req.dir == IOREQ_WRITE);
1142 assert(!req.data_is_ptr);
1143
1144 qatomic_add(&buf_page->read_pointer, qw + 1);
1145 }
1146
1147 return req.count;
1148}
1149
1150static void handle_buffered_io(void *opaque)
1151{
1152 XenIOState *state = opaque;
1153
1154 if (handle_buffered_iopage(state)) {
1155 timer_mod(state->buffered_io_timer,
1156 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
1157 } else {
1158 timer_del(state->buffered_io_timer);
1159 xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
1160 }
1161}
1162
1163static void cpu_handle_ioreq(void *opaque)
1164{
1165 XenIOState *state = opaque;
1166 ioreq_t *req = cpu_get_ioreq(state);
1167
1168 handle_buffered_iopage(state);
1169 if (req) {
1170 ioreq_t copy = *req;
1171
1172 xen_rmb();
1173 handle_ioreq(state, ©);
1174 req->data = copy.data;
1175
1176 if (req->state != STATE_IOREQ_INPROCESS) {
1177 fprintf(stderr, "Badness in I/O request ... not in service?!: "
1178 "%x, ptr: %x, port: %"PRIx64", "
1179 "data: %"PRIx64", count: %u, size: %u, type: %u\n",
1180 req->state, req->data_is_ptr, req->addr,
1181 req->data, req->count, req->size, req->type);
1182 destroy_hvm_domain(false);
1183 return;
1184 }
1185
1186 xen_wmb();
1187
1188
1189
1190
1191
1192
1193
1194 if (runstate_is_running()) {
1195 ShutdownCause request;
1196
1197 if (qemu_shutdown_requested_get()) {
1198 destroy_hvm_domain(false);
1199 }
1200 request = qemu_reset_requested_get();
1201 if (request) {
1202 qemu_system_reset(request);
1203 destroy_hvm_domain(true);
1204 }
1205 }
1206
1207 req->state = STATE_IORESP_READY;
1208 xenevtchn_notify(state->xce_handle,
1209 state->ioreq_local_port[state->send_vcpu]);
1210 }
1211}
1212
1213static void xen_main_loop_prepare(XenIOState *state)
1214{
1215 int evtchn_fd = -1;
1216
1217 if (state->xce_handle != NULL) {
1218 evtchn_fd = xenevtchn_fd(state->xce_handle);
1219 }
1220
1221 state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
1222 state);
1223
1224 if (evtchn_fd != -1) {
1225 CPUState *cpu_state;
1226
1227 DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
1228 CPU_FOREACH(cpu_state) {
1229 DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
1230 __func__, cpu_state->cpu_index, cpu_state);
1231 state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
1232 }
1233 qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
1234 }
1235}
1236
1237
1238static void xen_hvm_change_state_handler(void *opaque, bool running,
1239 RunState rstate)
1240{
1241 XenIOState *state = opaque;
1242
1243 if (running) {
1244 xen_main_loop_prepare(state);
1245 }
1246
1247 xen_set_ioreq_server_state(xen_domid,
1248 state->ioservid,
1249 (rstate == RUN_STATE_RUNNING));
1250}
1251
1252static void xen_exit_notifier(Notifier *n, void *data)
1253{
1254 XenIOState *state = container_of(n, XenIOState, exit);
1255
1256 xen_destroy_ioreq_server(xen_domid, state->ioservid);
1257 if (state->fres != NULL) {
1258 xenforeignmemory_unmap_resource(xen_fmem, state->fres);
1259 }
1260
1261 xenevtchn_close(state->xce_handle);
1262 xs_daemon_close(state->xenstore);
1263}
1264
1265#ifdef XEN_COMPAT_PHYSMAP
1266static void xen_read_physmap(XenIOState *state)
1267{
1268 XenPhysmap *physmap = NULL;
1269 unsigned int len, num, i;
1270 char path[80], *value = NULL;
1271 char **entries = NULL;
1272
1273 snprintf(path, sizeof(path),
1274 "/local/domain/0/device-model/%d/physmap", xen_domid);
1275 entries = xs_directory(state->xenstore, 0, path, &num);
1276 if (entries == NULL)
1277 return;
1278
1279 for (i = 0; i < num; i++) {
1280 physmap = g_malloc(sizeof (XenPhysmap));
1281 physmap->phys_offset = strtoull(entries[i], NULL, 16);
1282 snprintf(path, sizeof(path),
1283 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1284 xen_domid, entries[i]);
1285 value = xs_read(state->xenstore, 0, path, &len);
1286 if (value == NULL) {
1287 g_free(physmap);
1288 continue;
1289 }
1290 physmap->start_addr = strtoull(value, NULL, 16);
1291 free(value);
1292
1293 snprintf(path, sizeof(path),
1294 "/local/domain/0/device-model/%d/physmap/%s/size",
1295 xen_domid, entries[i]);
1296 value = xs_read(state->xenstore, 0, path, &len);
1297 if (value == NULL) {
1298 g_free(physmap);
1299 continue;
1300 }
1301 physmap->size = strtoull(value, NULL, 16);
1302 free(value);
1303
1304 snprintf(path, sizeof(path),
1305 "/local/domain/0/device-model/%d/physmap/%s/name",
1306 xen_domid, entries[i]);
1307 physmap->name = xs_read(state->xenstore, 0, path, &len);
1308
1309 QLIST_INSERT_HEAD(&xen_physmap, physmap, list);
1310 }
1311 free(entries);
1312}
1313#else
1314static void xen_read_physmap(XenIOState *state)
1315{
1316}
1317#endif
1318
1319static void xen_wakeup_notifier(Notifier *notifier, void *data)
1320{
1321 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
1322}
1323
1324static int xen_map_ioreq_server(XenIOState *state)
1325{
1326 void *addr = NULL;
1327 xen_pfn_t ioreq_pfn;
1328 xen_pfn_t bufioreq_pfn;
1329 evtchn_port_t bufioreq_evtchn;
1330 int rc;
1331
1332
1333
1334
1335
1336 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq != 0);
1337 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
1338 state->fres = xenforeignmemory_map_resource(xen_fmem, xen_domid,
1339 XENMEM_resource_ioreq_server,
1340 state->ioservid, 0, 2,
1341 &addr,
1342 PROT_READ | PROT_WRITE, 0);
1343 if (state->fres != NULL) {
1344 trace_xen_map_resource_ioreq(state->ioservid, addr);
1345 state->buffered_io_page = addr;
1346 state->shared_page = addr + TARGET_PAGE_SIZE;
1347 } else if (errno != EOPNOTSUPP) {
1348 error_report("failed to map ioreq server resources: error %d handle=%p",
1349 errno, xen_xc);
1350 return -1;
1351 }
1352
1353 rc = xen_get_ioreq_server_info(xen_domid, state->ioservid,
1354 (state->shared_page == NULL) ?
1355 &ioreq_pfn : NULL,
1356 (state->buffered_io_page == NULL) ?
1357 &bufioreq_pfn : NULL,
1358 &bufioreq_evtchn);
1359 if (rc < 0) {
1360 error_report("failed to get ioreq server info: error %d handle=%p",
1361 errno, xen_xc);
1362 return rc;
1363 }
1364
1365 if (state->shared_page == NULL) {
1366 DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
1367
1368 state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
1369 PROT_READ | PROT_WRITE,
1370 1, &ioreq_pfn, NULL);
1371 if (state->shared_page == NULL) {
1372 error_report("map shared IO page returned error %d handle=%p",
1373 errno, xen_xc);
1374 }
1375 }
1376
1377 if (state->buffered_io_page == NULL) {
1378 DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
1379
1380 state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
1381 PROT_READ | PROT_WRITE,
1382 1, &bufioreq_pfn,
1383 NULL);
1384 if (state->buffered_io_page == NULL) {
1385 error_report("map buffered IO page returned error %d", errno);
1386 return -1;
1387 }
1388 }
1389
1390 if (state->shared_page == NULL || state->buffered_io_page == NULL) {
1391 return -1;
1392 }
1393
1394 DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
1395
1396 state->bufioreq_remote_port = bufioreq_evtchn;
1397
1398 return 0;
1399}
1400
1401void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
1402{
1403 MachineState *ms = MACHINE(pcms);
1404 unsigned int max_cpus = ms->smp.max_cpus;
1405 int i, rc;
1406 xen_pfn_t ioreq_pfn;
1407 XenIOState *state;
1408
1409 state = g_malloc0(sizeof (XenIOState));
1410
1411 state->xce_handle = xenevtchn_open(NULL, 0);
1412 if (state->xce_handle == NULL) {
1413 perror("xen: event channel open");
1414 goto err;
1415 }
1416
1417 state->xenstore = xs_daemon_open();
1418 if (state->xenstore == NULL) {
1419 perror("xen: xenstore open");
1420 goto err;
1421 }
1422
1423 xen_create_ioreq_server(xen_domid, &state->ioservid);
1424
1425 state->exit.notify = xen_exit_notifier;
1426 qemu_add_exit_notifier(&state->exit);
1427
1428 state->suspend.notify = xen_suspend_notifier;
1429 qemu_register_suspend_notifier(&state->suspend);
1430
1431 state->wakeup.notify = xen_wakeup_notifier;
1432 qemu_register_wakeup_notifier(&state->wakeup);
1433
1434
1435
1436
1437 qemu_register_wakeup_support();
1438
1439 rc = xen_map_ioreq_server(state);
1440 if (rc < 0) {
1441 goto err;
1442 }
1443
1444 rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
1445 if (!rc) {
1446 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
1447 state->shared_vmport_page =
1448 xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
1449 1, &ioreq_pfn, NULL);
1450 if (state->shared_vmport_page == NULL) {
1451 error_report("map shared vmport IO page returned error %d handle=%p",
1452 errno, xen_xc);
1453 goto err;
1454 }
1455 } else if (rc != -ENOSYS) {
1456 error_report("get vmport regs pfn returned error %d, rc=%d",
1457 errno, rc);
1458 goto err;
1459 }
1460
1461
1462 state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
1463
1464 rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
1465 if (rc < 0) {
1466 error_report("failed to enable ioreq server info: error %d handle=%p",
1467 errno, xen_xc);
1468 goto err;
1469 }
1470
1471 state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
1472
1473
1474 for (i = 0; i < max_cpus; i++) {
1475 rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
1476 xen_vcpu_eport(state->shared_page, i));
1477 if (rc == -1) {
1478 error_report("shared evtchn %d bind error %d", i, errno);
1479 goto err;
1480 }
1481 state->ioreq_local_port[i] = rc;
1482 }
1483
1484 rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
1485 state->bufioreq_remote_port);
1486 if (rc == -1) {
1487 error_report("buffered evtchn bind error %d", errno);
1488 goto err;
1489 }
1490 state->bufioreq_local_port = rc;
1491
1492
1493#ifdef XEN_COMPAT_PHYSMAP
1494 xen_map_cache_init(xen_phys_offset_to_gaddr, state);
1495#else
1496 xen_map_cache_init(NULL, state);
1497#endif
1498 xen_ram_init(pcms, ms->ram_size, ram_memory);
1499
1500 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
1501
1502 state->memory_listener = xen_memory_listener;
1503 memory_listener_register(&state->memory_listener, &address_space_memory);
1504 state->log_for_dirtybit = NULL;
1505
1506 state->io_listener = xen_io_listener;
1507 memory_listener_register(&state->io_listener, &address_space_io);
1508
1509 state->device_listener = xen_device_listener;
1510 QLIST_INIT(&state->dev_list);
1511 device_listener_register(&state->device_listener);
1512
1513 xen_bus_init();
1514
1515
1516 if (xen_be_init() != 0) {
1517 error_report("xen backend core setup failed");
1518 goto err;
1519 }
1520 xen_be_register_common();
1521
1522 QLIST_INIT(&xen_physmap);
1523 xen_read_physmap(state);
1524
1525
1526 pcms->acpi_build_enabled = false;
1527
1528 return;
1529
1530err:
1531 error_report("xen hardware virtual machine initialisation failed");
1532 exit(1);
1533}
1534
1535void destroy_hvm_domain(bool reboot)
1536{
1537 xc_interface *xc_handle;
1538 int sts;
1539 int rc;
1540
1541 unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
1542
1543 if (xen_dmod) {
1544 rc = xendevicemodel_shutdown(xen_dmod, xen_domid, reason);
1545 if (!rc) {
1546 return;
1547 }
1548 if (errno != ENOTTY ) {
1549 perror("xendevicemodel_shutdown failed");
1550 }
1551
1552 }
1553
1554 xc_handle = xc_interface_open(0, 0, 0);
1555 if (xc_handle == NULL) {
1556 fprintf(stderr, "Cannot acquire xenctrl handle\n");
1557 } else {
1558 sts = xc_domain_shutdown(xc_handle, xen_domid, reason);
1559 if (sts != 0) {
1560 fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
1561 "sts %d, %s\n", reboot ? "reboot" : "poweroff",
1562 sts, strerror(errno));
1563 } else {
1564 fprintf(stderr, "Issued domain %d %s\n", xen_domid,
1565 reboot ? "reboot" : "poweroff");
1566 }
1567 xc_interface_close(xc_handle);
1568 }
1569}
1570
1571void xen_register_framebuffer(MemoryRegion *mr)
1572{
1573 framebuffer = mr;
1574}
1575
1576void xen_shutdown_fatal_error(const char *fmt, ...)
1577{
1578 va_list ap;
1579
1580 va_start(ap, fmt);
1581 vfprintf(stderr, fmt, ap);
1582 va_end(ap);
1583 fprintf(stderr, "Will destroy the domain.\n");
1584
1585 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR);
1586}
1587
1588void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
1589{
1590 if (unlikely(xen_in_migration)) {
1591 int rc;
1592 ram_addr_t start_pfn, nb_pages;
1593
1594 start = xen_phys_offset_to_gaddr(start, length);
1595
1596 if (length == 0) {
1597 length = TARGET_PAGE_SIZE;
1598 }
1599 start_pfn = start >> TARGET_PAGE_BITS;
1600 nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
1601 - start_pfn;
1602 rc = xen_modified_memory(xen_domid, start_pfn, nb_pages);
1603 if (rc) {
1604 fprintf(stderr,
1605 "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
1606 __func__, start, nb_pages, errno, strerror(errno));
1607 }
1608 }
1609}
1610
1611void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
1612{
1613 if (enable) {
1614 memory_global_dirty_log_start();
1615 } else {
1616 memory_global_dirty_log_stop();
1617 }
1618}
1619