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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/irq.h"
19#include "hw/hw.h"
20#include "hw/i386/apic-msidef.h"
21#include "hw/xen/xen_common.h"
22#include "hw/xen/xen-legacy-backend.h"
23#include "hw/xen/xen-bus.h"
24#include "hw/xen/xen-x86.h"
25#include "qapi/error.h"
26#include "qapi/qapi-commands-migration.h"
27#include "qemu/error-report.h"
28#include "qemu/main-loop.h"
29#include "qemu/range.h"
30#include "sysemu/runstate.h"
31#include "sysemu/sysemu.h"
32#include "sysemu/xen.h"
33#include "sysemu/xen-mapcache.h"
34#include "trace.h"
35
36#include <xen/hvm/ioreq.h>
37#include <xen/hvm/e820.h>
38
39
40
41#ifdef DEBUG_XEN_HVM
42#define DPRINTF(fmt, ...) \
43 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
44#else
45#define DPRINTF(fmt, ...) \
46 do { } while (0)
47#endif
48
49static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
50static MemoryRegion *framebuffer;
51static bool xen_in_migration;
52
53
54
55
56
57
58
59
60#ifndef IOREQ_TYPE_VMWARE_PORT
61#define IOREQ_TYPE_VMWARE_PORT 3
62struct vmware_regs {
63 uint32_t esi;
64 uint32_t edi;
65 uint32_t ebx;
66 uint32_t ecx;
67 uint32_t edx;
68};
69typedef struct vmware_regs vmware_regs_t;
70
71struct shared_vmport_iopage {
72 struct vmware_regs vcpu_vmport_regs[1];
73};
74typedef struct shared_vmport_iopage shared_vmport_iopage_t;
75#endif
76
77static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
78{
79 return shared_page->vcpu_ioreq[i].vp_eport;
80}
81static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
82{
83 return &shared_page->vcpu_ioreq[vcpu];
84}
85
86#define BUFFER_IO_MAX_DELAY 100
87
88typedef struct XenPhysmap {
89 hwaddr start_addr;
90 ram_addr_t size;
91 const char *name;
92 hwaddr phys_offset;
93
94 QLIST_ENTRY(XenPhysmap) list;
95} XenPhysmap;
96
97static QLIST_HEAD(, XenPhysmap) xen_physmap;
98
99typedef struct XenPciDevice {
100 PCIDevice *pci_dev;
101 uint32_t sbdf;
102 QLIST_ENTRY(XenPciDevice) entry;
103} XenPciDevice;
104
105typedef struct XenIOState {
106 ioservid_t ioservid;
107 shared_iopage_t *shared_page;
108 shared_vmport_iopage_t *shared_vmport_page;
109 buffered_iopage_t *buffered_io_page;
110 xenforeignmemory_resource_handle *fres;
111 QEMUTimer *buffered_io_timer;
112 CPUState **cpu_by_vcpu_id;
113
114 evtchn_port_t *ioreq_local_port;
115
116 evtchn_port_t bufioreq_remote_port;
117 evtchn_port_t bufioreq_local_port;
118
119 xenevtchn_handle *xce_handle;
120
121 int send_vcpu;
122
123 struct xs_handle *xenstore;
124 MemoryListener memory_listener;
125 MemoryListener io_listener;
126 QLIST_HEAD(, XenPciDevice) dev_list;
127 DeviceListener device_listener;
128 hwaddr free_phys_offset;
129 const XenPhysmap *log_for_dirtybit;
130
131 unsigned long *dirty_bitmap;
132
133 Notifier exit;
134 Notifier suspend;
135 Notifier wakeup;
136} XenIOState;
137
138
139
140int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
141{
142 return irq_num + (PCI_SLOT(pci_dev->devfn) << 2);
143}
144
145void xen_piix3_set_irq(void *opaque, int irq_num, int level)
146{
147 xen_set_pci_intx_level(xen_domid, 0, 0, irq_num >> 2,
148 irq_num & 3, level);
149}
150
151int xen_set_pci_link_route(uint8_t link, uint8_t irq)
152{
153 return xendevicemodel_set_pci_link_route(xen_dmod, xen_domid, link, irq);
154}
155
156int xen_is_pirq_msi(uint32_t msi_data)
157{
158
159
160
161 return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0;
162}
163
164void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
165{
166 xen_inject_msi(xen_domid, addr, data);
167}
168
169static void xen_suspend_notifier(Notifier *notifier, void *data)
170{
171 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
172}
173
174
175
176static void xen_set_irq(void *opaque, int irq, int level)
177{
178 xen_set_isa_irq_level(xen_domid, irq, level);
179}
180
181qemu_irq *xen_interrupt_controller_init(void)
182{
183 return qemu_allocate_irqs(xen_set_irq, NULL, 16);
184}
185
186
187
188static void xen_ram_init(PCMachineState *pcms,
189 ram_addr_t ram_size, MemoryRegion **ram_memory_p)
190{
191 X86MachineState *x86ms = X86_MACHINE(pcms);
192 MemoryRegion *sysmem = get_system_memory();
193 ram_addr_t block_len;
194 uint64_t user_lowmem =
195 object_property_get_uint(qdev_get_machine(),
196 PC_MACHINE_MAX_RAM_BELOW_4G,
197 &error_abort);
198
199
200
201
202 if (!user_lowmem) {
203 user_lowmem = HVM_BELOW_4G_RAM_END;
204 }
205 if (HVM_BELOW_4G_RAM_END <= user_lowmem) {
206 user_lowmem = HVM_BELOW_4G_RAM_END;
207 }
208
209 if (ram_size >= user_lowmem) {
210 x86ms->above_4g_mem_size = ram_size - user_lowmem;
211 x86ms->below_4g_mem_size = user_lowmem;
212 } else {
213 x86ms->above_4g_mem_size = 0;
214 x86ms->below_4g_mem_size = ram_size;
215 }
216 if (!x86ms->above_4g_mem_size) {
217 block_len = ram_size;
218 } else {
219
220
221
222
223 block_len = (4 * GiB) + x86ms->above_4g_mem_size;
224 }
225 memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
226 &error_fatal);
227 *ram_memory_p = &ram_memory;
228
229 memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
230 &ram_memory, 0, 0xa0000);
231 memory_region_add_subregion(sysmem, 0, &ram_640k);
232
233
234
235
236
237
238 memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
239 &ram_memory, 0xc0000,
240 x86ms->below_4g_mem_size - 0xc0000);
241 memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
242 if (x86ms->above_4g_mem_size > 0) {
243 memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
244 &ram_memory, 0x100000000ULL,
245 x86ms->above_4g_mem_size);
246 memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
247 }
248}
249
250void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
251 Error **errp)
252{
253 unsigned long nr_pfn;
254 xen_pfn_t *pfn_list;
255 int i;
256
257 if (runstate_check(RUN_STATE_INMIGRATE)) {
258
259 fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
260 " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
261 __func__, size, ram_addr);
262 return;
263 }
264
265 if (mr == &ram_memory) {
266 return;
267 }
268
269 trace_xen_ram_alloc(ram_addr, size);
270
271 nr_pfn = size >> TARGET_PAGE_BITS;
272 pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
273
274 for (i = 0; i < nr_pfn; i++) {
275 pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
276 }
277
278 if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
279 error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
280 ram_addr);
281 }
282
283 g_free(pfn_list);
284}
285
286static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size)
287{
288 XenPhysmap *physmap = NULL;
289
290 start_addr &= TARGET_PAGE_MASK;
291
292 QLIST_FOREACH(physmap, &xen_physmap, list) {
293 if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) {
294 return physmap;
295 }
296 }
297 return NULL;
298}
299
300static hwaddr xen_phys_offset_to_gaddr(hwaddr phys_offset, ram_addr_t size)
301{
302 hwaddr addr = phys_offset & TARGET_PAGE_MASK;
303 XenPhysmap *physmap = NULL;
304
305 QLIST_FOREACH(physmap, &xen_physmap, list) {
306 if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
307 return physmap->start_addr + (phys_offset - physmap->phys_offset);
308 }
309 }
310
311 return phys_offset;
312}
313
314#ifdef XEN_COMPAT_PHYSMAP
315static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap)
316{
317 char path[80], value[17];
318
319 snprintf(path, sizeof(path),
320 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
321 xen_domid, (uint64_t)physmap->phys_offset);
322 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->start_addr);
323 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
324 return -1;
325 }
326 snprintf(path, sizeof(path),
327 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
328 xen_domid, (uint64_t)physmap->phys_offset);
329 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)physmap->size);
330 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
331 return -1;
332 }
333 if (physmap->name) {
334 snprintf(path, sizeof(path),
335 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
336 xen_domid, (uint64_t)physmap->phys_offset);
337 if (!xs_write(state->xenstore, 0, path,
338 physmap->name, strlen(physmap->name))) {
339 return -1;
340 }
341 }
342 return 0;
343}
344#else
345static int xen_save_physmap(XenIOState *state, XenPhysmap *physmap)
346{
347 return 0;
348}
349#endif
350
351static int xen_add_to_physmap(XenIOState *state,
352 hwaddr start_addr,
353 ram_addr_t size,
354 MemoryRegion *mr,
355 hwaddr offset_within_region)
356{
357 unsigned long nr_pages;
358 int rc = 0;
359 XenPhysmap *physmap = NULL;
360 hwaddr pfn, start_gpfn;
361 hwaddr phys_offset = memory_region_get_ram_addr(mr);
362 const char *mr_name;
363
364 if (get_physmapping(start_addr, size)) {
365 return 0;
366 }
367 if (size <= 0) {
368 return -1;
369 }
370
371
372
373
374
375 if (mr == framebuffer && start_addr > 0xbffff) {
376 goto go_physmap;
377 }
378 return -1;
379
380go_physmap:
381 DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
382 start_addr, start_addr + size);
383
384 mr_name = memory_region_name(mr);
385
386 physmap = g_new(XenPhysmap, 1);
387
388 physmap->start_addr = start_addr;
389 physmap->size = size;
390 physmap->name = mr_name;
391 physmap->phys_offset = phys_offset;
392
393 QLIST_INSERT_HEAD(&xen_physmap, physmap, list);
394
395 if (runstate_check(RUN_STATE_INMIGRATE)) {
396
397
398 uint8_t *p = xen_replace_cache_entry(phys_offset, start_addr, size);
399 assert(p && p == memory_region_get_ram_ptr(mr));
400
401 return 0;
402 }
403
404 pfn = phys_offset >> TARGET_PAGE_BITS;
405 start_gpfn = start_addr >> TARGET_PAGE_BITS;
406 nr_pages = size >> TARGET_PAGE_BITS;
407 rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, nr_pages, pfn,
408 start_gpfn);
409 if (rc) {
410 int saved_errno = errno;
411
412 error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx
413 " to GFN %"HWADDR_PRIx" failed: %s",
414 nr_pages, pfn, start_gpfn, strerror(saved_errno));
415 errno = saved_errno;
416 return -1;
417 }
418
419 rc = xendevicemodel_pin_memory_cacheattr(xen_dmod, xen_domid,
420 start_addr >> TARGET_PAGE_BITS,
421 (start_addr + size - 1) >> TARGET_PAGE_BITS,
422 XEN_DOMCTL_MEM_CACHEATTR_WB);
423 if (rc) {
424 error_report("pin_memory_cacheattr failed: %s", strerror(errno));
425 }
426 return xen_save_physmap(state, physmap);
427}
428
429static int xen_remove_from_physmap(XenIOState *state,
430 hwaddr start_addr,
431 ram_addr_t size)
432{
433 int rc = 0;
434 XenPhysmap *physmap = NULL;
435 hwaddr phys_offset = 0;
436
437 physmap = get_physmapping(start_addr, size);
438 if (physmap == NULL) {
439 return -1;
440 }
441
442 phys_offset = physmap->phys_offset;
443 size = physmap->size;
444
445 DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
446 "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
447
448 size >>= TARGET_PAGE_BITS;
449 start_addr >>= TARGET_PAGE_BITS;
450 phys_offset >>= TARGET_PAGE_BITS;
451 rc = xendevicemodel_relocate_memory(xen_dmod, xen_domid, size, start_addr,
452 phys_offset);
453 if (rc) {
454 int saved_errno = errno;
455
456 error_report("relocate_memory "RAM_ADDR_FMT" pages"
457 " from GFN %"HWADDR_PRIx
458 " to GFN %"HWADDR_PRIx" failed: %s",
459 size, start_addr, phys_offset, strerror(saved_errno));
460 errno = saved_errno;
461 return -1;
462 }
463
464 QLIST_REMOVE(physmap, list);
465 if (state->log_for_dirtybit == physmap) {
466 state->log_for_dirtybit = NULL;
467 g_free(state->dirty_bitmap);
468 state->dirty_bitmap = NULL;
469 }
470 g_free(physmap);
471
472 return 0;
473}
474
475static void xen_set_memory(struct MemoryListener *listener,
476 MemoryRegionSection *section,
477 bool add)
478{
479 XenIOState *state = container_of(listener, XenIOState, memory_listener);
480 hwaddr start_addr = section->offset_within_address_space;
481 ram_addr_t size = int128_get64(section->size);
482 bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
483 hvmmem_type_t mem_type;
484
485 if (section->mr == &ram_memory) {
486 return;
487 } else {
488 if (add) {
489 xen_map_memory_section(xen_domid, state->ioservid,
490 section);
491 } else {
492 xen_unmap_memory_section(xen_domid, state->ioservid,
493 section);
494 }
495 }
496
497 if (!memory_region_is_ram(section->mr)) {
498 return;
499 }
500
501 if (log_dirty != add) {
502 return;
503 }
504
505 trace_xen_client_set_memory(start_addr, size, log_dirty);
506
507 start_addr &= TARGET_PAGE_MASK;
508 size = TARGET_PAGE_ALIGN(size);
509
510 if (add) {
511 if (!memory_region_is_rom(section->mr)) {
512 xen_add_to_physmap(state, start_addr, size,
513 section->mr, section->offset_within_region);
514 } else {
515 mem_type = HVMMEM_ram_ro;
516 if (xen_set_mem_type(xen_domid, mem_type,
517 start_addr >> TARGET_PAGE_BITS,
518 size >> TARGET_PAGE_BITS)) {
519 DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx"\n",
520 start_addr);
521 }
522 }
523 } else {
524 if (xen_remove_from_physmap(state, start_addr, size) < 0) {
525 DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
526 }
527 }
528}
529
530static void xen_region_add(MemoryListener *listener,
531 MemoryRegionSection *section)
532{
533 memory_region_ref(section->mr);
534 xen_set_memory(listener, section, true);
535}
536
537static void xen_region_del(MemoryListener *listener,
538 MemoryRegionSection *section)
539{
540 xen_set_memory(listener, section, false);
541 memory_region_unref(section->mr);
542}
543
544static void xen_io_add(MemoryListener *listener,
545 MemoryRegionSection *section)
546{
547 XenIOState *state = container_of(listener, XenIOState, io_listener);
548 MemoryRegion *mr = section->mr;
549
550 if (mr->ops == &unassigned_io_ops) {
551 return;
552 }
553
554 memory_region_ref(mr);
555
556 xen_map_io_section(xen_domid, state->ioservid, section);
557}
558
559static void xen_io_del(MemoryListener *listener,
560 MemoryRegionSection *section)
561{
562 XenIOState *state = container_of(listener, XenIOState, io_listener);
563 MemoryRegion *mr = section->mr;
564
565 if (mr->ops == &unassigned_io_ops) {
566 return;
567 }
568
569 xen_unmap_io_section(xen_domid, state->ioservid, section);
570
571 memory_region_unref(mr);
572}
573
574static void xen_device_realize(DeviceListener *listener,
575 DeviceState *dev)
576{
577 XenIOState *state = container_of(listener, XenIOState, device_listener);
578
579 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
580 PCIDevice *pci_dev = PCI_DEVICE(dev);
581 XenPciDevice *xendev = g_new(XenPciDevice, 1);
582
583 xendev->pci_dev = pci_dev;
584 xendev->sbdf = PCI_BUILD_BDF(pci_dev_bus_num(pci_dev),
585 pci_dev->devfn);
586 QLIST_INSERT_HEAD(&state->dev_list, xendev, entry);
587
588 xen_map_pcidev(xen_domid, state->ioservid, pci_dev);
589 }
590}
591
592static void xen_device_unrealize(DeviceListener *listener,
593 DeviceState *dev)
594{
595 XenIOState *state = container_of(listener, XenIOState, device_listener);
596
597 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
598 PCIDevice *pci_dev = PCI_DEVICE(dev);
599 XenPciDevice *xendev, *next;
600
601 xen_unmap_pcidev(xen_domid, state->ioservid, pci_dev);
602
603 QLIST_FOREACH_SAFE(xendev, &state->dev_list, entry, next) {
604 if (xendev->pci_dev == pci_dev) {
605 QLIST_REMOVE(xendev, entry);
606 g_free(xendev);
607 break;
608 }
609 }
610 }
611}
612
613static void xen_sync_dirty_bitmap(XenIOState *state,
614 hwaddr start_addr,
615 ram_addr_t size)
616{
617 hwaddr npages = size >> TARGET_PAGE_BITS;
618 const int width = sizeof(unsigned long) * 8;
619 size_t bitmap_size = DIV_ROUND_UP(npages, width);
620 int rc, i, j;
621 const XenPhysmap *physmap = NULL;
622
623 physmap = get_physmapping(start_addr, size);
624 if (physmap == NULL) {
625
626 return;
627 }
628
629 if (state->log_for_dirtybit == NULL) {
630 state->log_for_dirtybit = physmap;
631 state->dirty_bitmap = g_new(unsigned long, bitmap_size);
632 } else if (state->log_for_dirtybit != physmap) {
633
634 return;
635 }
636
637 rc = xen_track_dirty_vram(xen_domid, start_addr >> TARGET_PAGE_BITS,
638 npages, state->dirty_bitmap);
639 if (rc < 0) {
640#ifndef ENODATA
641#define ENODATA ENOENT
642#endif
643 if (errno == ENODATA) {
644 memory_region_set_dirty(framebuffer, 0, size);
645 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
646 ", 0x" TARGET_FMT_plx "): %s\n",
647 start_addr, start_addr + size, strerror(errno));
648 }
649 return;
650 }
651
652 for (i = 0; i < bitmap_size; i++) {
653 unsigned long map = state->dirty_bitmap[i];
654 while (map != 0) {
655 j = ctzl(map);
656 map &= ~(1ul << j);
657 memory_region_set_dirty(framebuffer,
658 (i * width + j) * TARGET_PAGE_SIZE,
659 TARGET_PAGE_SIZE);
660 };
661 }
662}
663
664static void xen_log_start(MemoryListener *listener,
665 MemoryRegionSection *section,
666 int old, int new)
667{
668 XenIOState *state = container_of(listener, XenIOState, memory_listener);
669
670 if (new & ~old & (1 << DIRTY_MEMORY_VGA)) {
671 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
672 int128_get64(section->size));
673 }
674}
675
676static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section,
677 int old, int new)
678{
679 XenIOState *state = container_of(listener, XenIOState, memory_listener);
680
681 if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
682 state->log_for_dirtybit = NULL;
683 g_free(state->dirty_bitmap);
684 state->dirty_bitmap = NULL;
685
686 xen_track_dirty_vram(xen_domid, 0, 0, NULL);
687 }
688}
689
690static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section)
691{
692 XenIOState *state = container_of(listener, XenIOState, memory_listener);
693
694 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
695 int128_get64(section->size));
696}
697
698static void xen_log_global_start(MemoryListener *listener)
699{
700 if (xen_enabled()) {
701 xen_in_migration = true;
702 }
703}
704
705static void xen_log_global_stop(MemoryListener *listener)
706{
707 xen_in_migration = false;
708}
709
710static MemoryListener xen_memory_listener = {
711 .name = "xen-memory",
712 .region_add = xen_region_add,
713 .region_del = xen_region_del,
714 .log_start = xen_log_start,
715 .log_stop = xen_log_stop,
716 .log_sync = xen_log_sync,
717 .log_global_start = xen_log_global_start,
718 .log_global_stop = xen_log_global_stop,
719 .priority = 10,
720};
721
722static MemoryListener xen_io_listener = {
723 .name = "xen-io",
724 .region_add = xen_io_add,
725 .region_del = xen_io_del,
726 .priority = 10,
727};
728
729static DeviceListener xen_device_listener = {
730 .realize = xen_device_realize,
731 .unrealize = xen_device_unrealize,
732};
733
734
735static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
736{
737 ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
738
739 if (req->state != STATE_IOREQ_READY) {
740 DPRINTF("I/O request not ready: "
741 "%x, ptr: %x, port: %"PRIx64", "
742 "data: %"PRIx64", count: %u, size: %u\n",
743 req->state, req->data_is_ptr, req->addr,
744 req->data, req->count, req->size);
745 return NULL;
746 }
747
748 xen_rmb();
749
750 req->state = STATE_IOREQ_INPROCESS;
751 return req;
752}
753
754
755
756
757static ioreq_t *cpu_get_ioreq(XenIOState *state)
758{
759 MachineState *ms = MACHINE(qdev_get_machine());
760 unsigned int max_cpus = ms->smp.max_cpus;
761 int i;
762 evtchn_port_t port;
763
764 port = xenevtchn_pending(state->xce_handle);
765 if (port == state->bufioreq_local_port) {
766 timer_mod(state->buffered_io_timer,
767 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
768 return NULL;
769 }
770
771 if (port != -1) {
772 for (i = 0; i < max_cpus; i++) {
773 if (state->ioreq_local_port[i] == port) {
774 break;
775 }
776 }
777
778 if (i == max_cpus) {
779 hw_error("Fatal error while trying to get io event!\n");
780 }
781
782
783 xenevtchn_unmask(state->xce_handle, port);
784
785
786 state->send_vcpu = i;
787 return cpu_get_ioreq_from_shared_memory(state, i);
788 }
789
790
791 return NULL;
792}
793
794static uint32_t do_inp(uint32_t addr, unsigned long size)
795{
796 switch (size) {
797 case 1:
798 return cpu_inb(addr);
799 case 2:
800 return cpu_inw(addr);
801 case 4:
802 return cpu_inl(addr);
803 default:
804 hw_error("inp: bad size: %04x %lx", addr, size);
805 }
806}
807
808static void do_outp(uint32_t addr,
809 unsigned long size, uint32_t val)
810{
811 switch (size) {
812 case 1:
813 return cpu_outb(addr, val);
814 case 2:
815 return cpu_outw(addr, val);
816 case 4:
817 return cpu_outl(addr, val);
818 default:
819 hw_error("outp: bad size: %04x %lx", addr, size);
820 }
821}
822
823
824
825
826
827
828
829
830
831
832static void rw_phys_req_item(hwaddr addr,
833 ioreq_t *req, uint32_t i, void *val, int rw)
834{
835
836
837
838 hwaddr offset = (hwaddr)req->size * i;
839 if (req->df) {
840 addr -= offset;
841 } else {
842 addr += offset;
843 }
844 cpu_physical_memory_rw(addr, val, req->size, rw);
845}
846
847static inline void read_phys_req_item(hwaddr addr,
848 ioreq_t *req, uint32_t i, void *val)
849{
850 rw_phys_req_item(addr, req, i, val, 0);
851}
852static inline void write_phys_req_item(hwaddr addr,
853 ioreq_t *req, uint32_t i, void *val)
854{
855 rw_phys_req_item(addr, req, i, val, 1);
856}
857
858
859static void cpu_ioreq_pio(ioreq_t *req)
860{
861 uint32_t i;
862
863 trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
864 req->data, req->count, req->size);
865
866 if (req->size > sizeof(uint32_t)) {
867 hw_error("PIO: bad size (%u)", req->size);
868 }
869
870 if (req->dir == IOREQ_READ) {
871 if (!req->data_is_ptr) {
872 req->data = do_inp(req->addr, req->size);
873 trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
874 req->size);
875 } else {
876 uint32_t tmp;
877
878 for (i = 0; i < req->count; i++) {
879 tmp = do_inp(req->addr, req->size);
880 write_phys_req_item(req->data, req, i, &tmp);
881 }
882 }
883 } else if (req->dir == IOREQ_WRITE) {
884 if (!req->data_is_ptr) {
885 trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
886 req->size);
887 do_outp(req->addr, req->size, req->data);
888 } else {
889 for (i = 0; i < req->count; i++) {
890 uint32_t tmp = 0;
891
892 read_phys_req_item(req->data, req, i, &tmp);
893 do_outp(req->addr, req->size, tmp);
894 }
895 }
896 }
897}
898
899static void cpu_ioreq_move(ioreq_t *req)
900{
901 uint32_t i;
902
903 trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
904 req->data, req->count, req->size);
905
906 if (req->size > sizeof(req->data)) {
907 hw_error("MMIO: bad size (%u)", req->size);
908 }
909
910 if (!req->data_is_ptr) {
911 if (req->dir == IOREQ_READ) {
912 for (i = 0; i < req->count; i++) {
913 read_phys_req_item(req->addr, req, i, &req->data);
914 }
915 } else if (req->dir == IOREQ_WRITE) {
916 for (i = 0; i < req->count; i++) {
917 write_phys_req_item(req->addr, req, i, &req->data);
918 }
919 }
920 } else {
921 uint64_t tmp;
922
923 if (req->dir == IOREQ_READ) {
924 for (i = 0; i < req->count; i++) {
925 read_phys_req_item(req->addr, req, i, &tmp);
926 write_phys_req_item(req->data, req, i, &tmp);
927 }
928 } else if (req->dir == IOREQ_WRITE) {
929 for (i = 0; i < req->count; i++) {
930 read_phys_req_item(req->data, req, i, &tmp);
931 write_phys_req_item(req->addr, req, i, &tmp);
932 }
933 }
934 }
935}
936
937static void cpu_ioreq_config(XenIOState *state, ioreq_t *req)
938{
939 uint32_t sbdf = req->addr >> 32;
940 uint32_t reg = req->addr;
941 XenPciDevice *xendev;
942
943 if (req->size != sizeof(uint8_t) && req->size != sizeof(uint16_t) &&
944 req->size != sizeof(uint32_t)) {
945 hw_error("PCI config access: bad size (%u)", req->size);
946 }
947
948 if (req->count != 1) {
949 hw_error("PCI config access: bad count (%u)", req->count);
950 }
951
952 QLIST_FOREACH(xendev, &state->dev_list, entry) {
953 if (xendev->sbdf != sbdf) {
954 continue;
955 }
956
957 if (!req->data_is_ptr) {
958 if (req->dir == IOREQ_READ) {
959 req->data = pci_host_config_read_common(
960 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
961 req->size);
962 trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
963 req->size, req->data);
964 } else if (req->dir == IOREQ_WRITE) {
965 trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
966 req->size, req->data);
967 pci_host_config_write_common(
968 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
969 req->data, req->size);
970 }
971 } else {
972 uint32_t tmp;
973
974 if (req->dir == IOREQ_READ) {
975 tmp = pci_host_config_read_common(
976 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
977 req->size);
978 trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
979 req->size, tmp);
980 write_phys_req_item(req->data, req, 0, &tmp);
981 } else if (req->dir == IOREQ_WRITE) {
982 read_phys_req_item(req->data, req, 0, &tmp);
983 trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
984 req->size, tmp);
985 pci_host_config_write_common(
986 xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
987 tmp, req->size);
988 }
989 }
990 }
991}
992
993static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
994{
995 X86CPU *cpu;
996 CPUX86State *env;
997
998 cpu = X86_CPU(current_cpu);
999 env = &cpu->env;
1000 env->regs[R_EAX] = req->data;
1001 env->regs[R_EBX] = vmport_regs->ebx;
1002 env->regs[R_ECX] = vmport_regs->ecx;
1003 env->regs[R_EDX] = vmport_regs->edx;
1004 env->regs[R_ESI] = vmport_regs->esi;
1005 env->regs[R_EDI] = vmport_regs->edi;
1006}
1007
1008static void regs_from_cpu(vmware_regs_t *vmport_regs)
1009{
1010 X86CPU *cpu = X86_CPU(current_cpu);
1011 CPUX86State *env = &cpu->env;
1012
1013 vmport_regs->ebx = env->regs[R_EBX];
1014 vmport_regs->ecx = env->regs[R_ECX];
1015 vmport_regs->edx = env->regs[R_EDX];
1016 vmport_regs->esi = env->regs[R_ESI];
1017 vmport_regs->edi = env->regs[R_EDI];
1018}
1019
1020static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
1021{
1022 vmware_regs_t *vmport_regs;
1023
1024 assert(state->shared_vmport_page);
1025 vmport_regs =
1026 &state->shared_vmport_page->vcpu_vmport_regs[state->send_vcpu];
1027 QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs));
1028
1029 current_cpu = state->cpu_by_vcpu_id[state->send_vcpu];
1030 regs_to_cpu(vmport_regs, req);
1031 cpu_ioreq_pio(req);
1032 regs_from_cpu(vmport_regs);
1033 current_cpu = NULL;
1034}
1035
1036static void handle_ioreq(XenIOState *state, ioreq_t *req)
1037{
1038 trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
1039 req->addr, req->data, req->count, req->size);
1040
1041 if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
1042 (req->size < sizeof (target_ulong))) {
1043 req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
1044 }
1045
1046 if (req->dir == IOREQ_WRITE)
1047 trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
1048 req->addr, req->data, req->count, req->size);
1049
1050 switch (req->type) {
1051 case IOREQ_TYPE_PIO:
1052 cpu_ioreq_pio(req);
1053 break;
1054 case IOREQ_TYPE_COPY:
1055 cpu_ioreq_move(req);
1056 break;
1057 case IOREQ_TYPE_VMWARE_PORT:
1058 handle_vmport_ioreq(state, req);
1059 break;
1060 case IOREQ_TYPE_TIMEOFFSET:
1061 break;
1062 case IOREQ_TYPE_INVALIDATE:
1063 xen_invalidate_map_cache();
1064 break;
1065 case IOREQ_TYPE_PCI_CONFIG:
1066 cpu_ioreq_config(state, req);
1067 break;
1068 default:
1069 hw_error("Invalid ioreq type 0x%x\n", req->type);
1070 }
1071 if (req->dir == IOREQ_READ) {
1072 trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
1073 req->addr, req->data, req->count, req->size);
1074 }
1075}
1076
1077static bool handle_buffered_iopage(XenIOState *state)
1078{
1079 buffered_iopage_t *buf_page = state->buffered_io_page;
1080 buf_ioreq_t *buf_req = NULL;
1081 bool handled_ioreq = false;
1082 ioreq_t req;
1083 int qw;
1084
1085 if (!buf_page) {
1086 return 0;
1087 }
1088
1089 memset(&req, 0x00, sizeof(req));
1090 req.state = STATE_IOREQ_READY;
1091 req.count = 1;
1092 req.dir = IOREQ_WRITE;
1093
1094 for (;;) {
1095 uint32_t rdptr = buf_page->read_pointer, wrptr;
1096
1097 xen_rmb();
1098 wrptr = buf_page->write_pointer;
1099 xen_rmb();
1100 if (rdptr != buf_page->read_pointer) {
1101 continue;
1102 }
1103 if (rdptr == wrptr) {
1104 break;
1105 }
1106 buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
1107 req.size = 1U << buf_req->size;
1108 req.addr = buf_req->addr;
1109 req.data = buf_req->data;
1110 req.type = buf_req->type;
1111 xen_rmb();
1112 qw = (req.size == 8);
1113 if (qw) {
1114 if (rdptr + 1 == wrptr) {
1115 hw_error("Incomplete quad word buffered ioreq");
1116 }
1117 buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
1118 IOREQ_BUFFER_SLOT_NUM];
1119 req.data |= ((uint64_t)buf_req->data) << 32;
1120 xen_rmb();
1121 }
1122
1123 handle_ioreq(state, &req);
1124
1125
1126
1127
1128
1129 assert(req.state == STATE_IOREQ_READY);
1130 assert(req.count == 1);
1131 assert(req.dir == IOREQ_WRITE);
1132 assert(!req.data_is_ptr);
1133
1134 qatomic_add(&buf_page->read_pointer, qw + 1);
1135 handled_ioreq = true;
1136 }
1137
1138 return handled_ioreq;
1139}
1140
1141static void handle_buffered_io(void *opaque)
1142{
1143 XenIOState *state = opaque;
1144
1145 if (handle_buffered_iopage(state)) {
1146 timer_mod(state->buffered_io_timer,
1147 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
1148 } else {
1149 timer_del(state->buffered_io_timer);
1150 xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
1151 }
1152}
1153
1154static void cpu_handle_ioreq(void *opaque)
1155{
1156 XenIOState *state = opaque;
1157 ioreq_t *req = cpu_get_ioreq(state);
1158
1159 handle_buffered_iopage(state);
1160 if (req) {
1161 ioreq_t copy = *req;
1162
1163 xen_rmb();
1164 handle_ioreq(state, ©);
1165 req->data = copy.data;
1166
1167 if (req->state != STATE_IOREQ_INPROCESS) {
1168 fprintf(stderr, "Badness in I/O request ... not in service?!: "
1169 "%x, ptr: %x, port: %"PRIx64", "
1170 "data: %"PRIx64", count: %u, size: %u, type: %u\n",
1171 req->state, req->data_is_ptr, req->addr,
1172 req->data, req->count, req->size, req->type);
1173 destroy_hvm_domain(false);
1174 return;
1175 }
1176
1177 xen_wmb();
1178
1179
1180
1181
1182
1183
1184
1185 if (runstate_is_running()) {
1186 ShutdownCause request;
1187
1188 if (qemu_shutdown_requested_get()) {
1189 destroy_hvm_domain(false);
1190 }
1191 request = qemu_reset_requested_get();
1192 if (request) {
1193 qemu_system_reset(request);
1194 destroy_hvm_domain(true);
1195 }
1196 }
1197
1198 req->state = STATE_IORESP_READY;
1199 xenevtchn_notify(state->xce_handle,
1200 state->ioreq_local_port[state->send_vcpu]);
1201 }
1202}
1203
1204static void xen_main_loop_prepare(XenIOState *state)
1205{
1206 int evtchn_fd = -1;
1207
1208 if (state->xce_handle != NULL) {
1209 evtchn_fd = xenevtchn_fd(state->xce_handle);
1210 }
1211
1212 state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
1213 state);
1214
1215 if (evtchn_fd != -1) {
1216 CPUState *cpu_state;
1217
1218 DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
1219 CPU_FOREACH(cpu_state) {
1220 DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
1221 __func__, cpu_state->cpu_index, cpu_state);
1222 state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
1223 }
1224 qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
1225 }
1226}
1227
1228
1229static void xen_hvm_change_state_handler(void *opaque, bool running,
1230 RunState rstate)
1231{
1232 XenIOState *state = opaque;
1233
1234 if (running) {
1235 xen_main_loop_prepare(state);
1236 }
1237
1238 xen_set_ioreq_server_state(xen_domid,
1239 state->ioservid,
1240 (rstate == RUN_STATE_RUNNING));
1241}
1242
1243static void xen_exit_notifier(Notifier *n, void *data)
1244{
1245 XenIOState *state = container_of(n, XenIOState, exit);
1246
1247 xen_destroy_ioreq_server(xen_domid, state->ioservid);
1248 if (state->fres != NULL) {
1249 xenforeignmemory_unmap_resource(xen_fmem, state->fres);
1250 }
1251
1252 xenevtchn_close(state->xce_handle);
1253 xs_daemon_close(state->xenstore);
1254}
1255
1256#ifdef XEN_COMPAT_PHYSMAP
1257static void xen_read_physmap(XenIOState *state)
1258{
1259 XenPhysmap *physmap = NULL;
1260 unsigned int len, num, i;
1261 char path[80], *value = NULL;
1262 char **entries = NULL;
1263
1264 snprintf(path, sizeof(path),
1265 "/local/domain/0/device-model/%d/physmap", xen_domid);
1266 entries = xs_directory(state->xenstore, 0, path, &num);
1267 if (entries == NULL)
1268 return;
1269
1270 for (i = 0; i < num; i++) {
1271 physmap = g_new(XenPhysmap, 1);
1272 physmap->phys_offset = strtoull(entries[i], NULL, 16);
1273 snprintf(path, sizeof(path),
1274 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1275 xen_domid, entries[i]);
1276 value = xs_read(state->xenstore, 0, path, &len);
1277 if (value == NULL) {
1278 g_free(physmap);
1279 continue;
1280 }
1281 physmap->start_addr = strtoull(value, NULL, 16);
1282 free(value);
1283
1284 snprintf(path, sizeof(path),
1285 "/local/domain/0/device-model/%d/physmap/%s/size",
1286 xen_domid, entries[i]);
1287 value = xs_read(state->xenstore, 0, path, &len);
1288 if (value == NULL) {
1289 g_free(physmap);
1290 continue;
1291 }
1292 physmap->size = strtoull(value, NULL, 16);
1293 free(value);
1294
1295 snprintf(path, sizeof(path),
1296 "/local/domain/0/device-model/%d/physmap/%s/name",
1297 xen_domid, entries[i]);
1298 physmap->name = xs_read(state->xenstore, 0, path, &len);
1299
1300 QLIST_INSERT_HEAD(&xen_physmap, physmap, list);
1301 }
1302 free(entries);
1303}
1304#else
1305static void xen_read_physmap(XenIOState *state)
1306{
1307}
1308#endif
1309
1310static void xen_wakeup_notifier(Notifier *notifier, void *data)
1311{
1312 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
1313}
1314
1315static int xen_map_ioreq_server(XenIOState *state)
1316{
1317 void *addr = NULL;
1318 xen_pfn_t ioreq_pfn;
1319 xen_pfn_t bufioreq_pfn;
1320 evtchn_port_t bufioreq_evtchn;
1321 int rc;
1322
1323
1324
1325
1326
1327 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq != 0);
1328 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
1329 state->fres = xenforeignmemory_map_resource(xen_fmem, xen_domid,
1330 XENMEM_resource_ioreq_server,
1331 state->ioservid, 0, 2,
1332 &addr,
1333 PROT_READ | PROT_WRITE, 0);
1334 if (state->fres != NULL) {
1335 trace_xen_map_resource_ioreq(state->ioservid, addr);
1336 state->buffered_io_page = addr;
1337 state->shared_page = addr + TARGET_PAGE_SIZE;
1338 } else if (errno != EOPNOTSUPP) {
1339 error_report("failed to map ioreq server resources: error %d handle=%p",
1340 errno, xen_xc);
1341 return -1;
1342 }
1343
1344 rc = xen_get_ioreq_server_info(xen_domid, state->ioservid,
1345 (state->shared_page == NULL) ?
1346 &ioreq_pfn : NULL,
1347 (state->buffered_io_page == NULL) ?
1348 &bufioreq_pfn : NULL,
1349 &bufioreq_evtchn);
1350 if (rc < 0) {
1351 error_report("failed to get ioreq server info: error %d handle=%p",
1352 errno, xen_xc);
1353 return rc;
1354 }
1355
1356 if (state->shared_page == NULL) {
1357 DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
1358
1359 state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
1360 PROT_READ | PROT_WRITE,
1361 1, &ioreq_pfn, NULL);
1362 if (state->shared_page == NULL) {
1363 error_report("map shared IO page returned error %d handle=%p",
1364 errno, xen_xc);
1365 }
1366 }
1367
1368 if (state->buffered_io_page == NULL) {
1369 DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
1370
1371 state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
1372 PROT_READ | PROT_WRITE,
1373 1, &bufioreq_pfn,
1374 NULL);
1375 if (state->buffered_io_page == NULL) {
1376 error_report("map buffered IO page returned error %d", errno);
1377 return -1;
1378 }
1379 }
1380
1381 if (state->shared_page == NULL || state->buffered_io_page == NULL) {
1382 return -1;
1383 }
1384
1385 DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
1386
1387 state->bufioreq_remote_port = bufioreq_evtchn;
1388
1389 return 0;
1390}
1391
1392void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
1393{
1394 MachineState *ms = MACHINE(pcms);
1395 unsigned int max_cpus = ms->smp.max_cpus;
1396 int i, rc;
1397 xen_pfn_t ioreq_pfn;
1398 XenIOState *state;
1399
1400 state = g_new0(XenIOState, 1);
1401
1402 state->xce_handle = xenevtchn_open(NULL, 0);
1403 if (state->xce_handle == NULL) {
1404 perror("xen: event channel open");
1405 goto err;
1406 }
1407
1408 state->xenstore = xs_daemon_open();
1409 if (state->xenstore == NULL) {
1410 perror("xen: xenstore open");
1411 goto err;
1412 }
1413
1414 xen_create_ioreq_server(xen_domid, &state->ioservid);
1415
1416 state->exit.notify = xen_exit_notifier;
1417 qemu_add_exit_notifier(&state->exit);
1418
1419 state->suspend.notify = xen_suspend_notifier;
1420 qemu_register_suspend_notifier(&state->suspend);
1421
1422 state->wakeup.notify = xen_wakeup_notifier;
1423 qemu_register_wakeup_notifier(&state->wakeup);
1424
1425
1426
1427
1428 qemu_register_wakeup_support();
1429
1430 rc = xen_map_ioreq_server(state);
1431 if (rc < 0) {
1432 goto err;
1433 }
1434
1435 rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
1436 if (!rc) {
1437 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
1438 state->shared_vmport_page =
1439 xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
1440 1, &ioreq_pfn, NULL);
1441 if (state->shared_vmport_page == NULL) {
1442 error_report("map shared vmport IO page returned error %d handle=%p",
1443 errno, xen_xc);
1444 goto err;
1445 }
1446 } else if (rc != -ENOSYS) {
1447 error_report("get vmport regs pfn returned error %d, rc=%d",
1448 errno, rc);
1449 goto err;
1450 }
1451
1452
1453 state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
1454
1455 rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
1456 if (rc < 0) {
1457 error_report("failed to enable ioreq server info: error %d handle=%p",
1458 errno, xen_xc);
1459 goto err;
1460 }
1461
1462 state->ioreq_local_port = g_new0(evtchn_port_t, max_cpus);
1463
1464
1465 for (i = 0; i < max_cpus; i++) {
1466 rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
1467 xen_vcpu_eport(state->shared_page, i));
1468 if (rc == -1) {
1469 error_report("shared evtchn %d bind error %d", i, errno);
1470 goto err;
1471 }
1472 state->ioreq_local_port[i] = rc;
1473 }
1474
1475 rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
1476 state->bufioreq_remote_port);
1477 if (rc == -1) {
1478 error_report("buffered evtchn bind error %d", errno);
1479 goto err;
1480 }
1481 state->bufioreq_local_port = rc;
1482
1483
1484#ifdef XEN_COMPAT_PHYSMAP
1485 xen_map_cache_init(xen_phys_offset_to_gaddr, state);
1486#else
1487 xen_map_cache_init(NULL, state);
1488#endif
1489 xen_ram_init(pcms, ms->ram_size, ram_memory);
1490
1491 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
1492
1493 state->memory_listener = xen_memory_listener;
1494 memory_listener_register(&state->memory_listener, &address_space_memory);
1495 state->log_for_dirtybit = NULL;
1496
1497 state->io_listener = xen_io_listener;
1498 memory_listener_register(&state->io_listener, &address_space_io);
1499
1500 state->device_listener = xen_device_listener;
1501 QLIST_INIT(&state->dev_list);
1502 device_listener_register(&state->device_listener);
1503
1504 xen_bus_init();
1505
1506
1507 if (xen_be_init() != 0) {
1508 error_report("xen backend core setup failed");
1509 goto err;
1510 }
1511 xen_be_register_common();
1512
1513 QLIST_INIT(&xen_physmap);
1514 xen_read_physmap(state);
1515
1516
1517 pcms->acpi_build_enabled = false;
1518
1519 return;
1520
1521err:
1522 error_report("xen hardware virtual machine initialisation failed");
1523 exit(1);
1524}
1525
1526void destroy_hvm_domain(bool reboot)
1527{
1528 xc_interface *xc_handle;
1529 int sts;
1530 int rc;
1531
1532 unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
1533
1534 if (xen_dmod) {
1535 rc = xendevicemodel_shutdown(xen_dmod, xen_domid, reason);
1536 if (!rc) {
1537 return;
1538 }
1539 if (errno != ENOTTY ) {
1540 perror("xendevicemodel_shutdown failed");
1541 }
1542
1543 }
1544
1545 xc_handle = xc_interface_open(0, 0, 0);
1546 if (xc_handle == NULL) {
1547 fprintf(stderr, "Cannot acquire xenctrl handle\n");
1548 } else {
1549 sts = xc_domain_shutdown(xc_handle, xen_domid, reason);
1550 if (sts != 0) {
1551 fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
1552 "sts %d, %s\n", reboot ? "reboot" : "poweroff",
1553 sts, strerror(errno));
1554 } else {
1555 fprintf(stderr, "Issued domain %d %s\n", xen_domid,
1556 reboot ? "reboot" : "poweroff");
1557 }
1558 xc_interface_close(xc_handle);
1559 }
1560}
1561
1562void xen_register_framebuffer(MemoryRegion *mr)
1563{
1564 framebuffer = mr;
1565}
1566
1567void xen_shutdown_fatal_error(const char *fmt, ...)
1568{
1569 va_list ap;
1570
1571 va_start(ap, fmt);
1572 vfprintf(stderr, fmt, ap);
1573 va_end(ap);
1574 fprintf(stderr, "Will destroy the domain.\n");
1575
1576 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR);
1577}
1578
1579void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
1580{
1581 if (unlikely(xen_in_migration)) {
1582 int rc;
1583 ram_addr_t start_pfn, nb_pages;
1584
1585 start = xen_phys_offset_to_gaddr(start, length);
1586
1587 if (length == 0) {
1588 length = TARGET_PAGE_SIZE;
1589 }
1590 start_pfn = start >> TARGET_PAGE_BITS;
1591 nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
1592 - start_pfn;
1593 rc = xen_modified_memory(xen_domid, start_pfn, nb_pages);
1594 if (rc) {
1595 fprintf(stderr,
1596 "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
1597 __func__, start, nb_pages, errno, strerror(errno));
1598 }
1599 }
1600}
1601
1602void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
1603{
1604 if (enable) {
1605 memory_global_dirty_log_start(GLOBAL_DIRTY_MIGRATION);
1606 } else {
1607 memory_global_dirty_log_stop(GLOBAL_DIRTY_MIGRATION);
1608 }
1609}
1610