2 * Copyright (C) 2010 Citrix Ltd.
4 * This work is licensed under the terms of the GNU GPL, version 2. See
5 * the COPYING file in the top-level directory.
7 * Contributions after 2012-01-13 are licensed under the terms of the
8 * GNU GPL, version 2 or (at your option) any later version.
11 #include "qemu/osdep.h"
14 #include "hw/pci/pci.h"
15 #include "hw/pci/pci_host.h"
16 #include "hw/i386/pc.h"
17 #include "hw/i386/apic-msidef.h"
18 #include "hw/xen/xen_common.h"
19 #include "hw/xen/xen-legacy-backend.h"
20 #include "hw/xen/xen-bus.h"
21 #include "qapi/error.h"
22 #include "qapi/qapi-commands-misc.h"
23 #include "qemu/error-report.h"
24 #include "qemu/range.h"
25 #include "sysemu/xen-mapcache.h"
27 #include "exec/address-spaces.h"
29 #include <xen/hvm/ioreq.h>
30 #include <xen/hvm/e820.h>
32 //#define DEBUG_XEN_HVM
35 #define DPRINTF(fmt, ...) \
36 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
38 #define DPRINTF(fmt, ...) \
42 static MemoryRegion ram_memory
, ram_640k
, ram_lo
, ram_hi
;
43 static MemoryRegion
*framebuffer
;
44 static bool xen_in_migration
;
46 /* Compatibility with older version */
48 /* This allows QEMU to build on a system that has Xen 4.5 or earlier
49 * installed. This here (not in hw/xen/xen_common.h) because xen/hvm/ioreq.h
50 * needs to be included before this block and hw/xen/xen_common.h needs to
51 * be included before xen/hvm/ioreq.h
53 #ifndef IOREQ_TYPE_VMWARE_PORT
54 #define IOREQ_TYPE_VMWARE_PORT 3
62 typedef struct vmware_regs vmware_regs_t
;
64 struct shared_vmport_iopage
{
65 struct vmware_regs vcpu_vmport_regs
[1];
67 typedef struct shared_vmport_iopage shared_vmport_iopage_t
;
70 static inline uint32_t xen_vcpu_eport(shared_iopage_t
*shared_page
, int i
)
72 return shared_page
->vcpu_ioreq
[i
].vp_eport
;
74 static inline ioreq_t
*xen_vcpu_ioreq(shared_iopage_t
*shared_page
, int vcpu
)
76 return &shared_page
->vcpu_ioreq
[vcpu
];
79 #define BUFFER_IO_MAX_DELAY 100
81 typedef struct XenPhysmap
{
87 QLIST_ENTRY(XenPhysmap
) list
;
90 static QLIST_HEAD(, XenPhysmap
) xen_physmap
;
92 typedef struct XenPciDevice
{
95 QLIST_ENTRY(XenPciDevice
) entry
;
98 typedef struct XenIOState
{
100 shared_iopage_t
*shared_page
;
101 shared_vmport_iopage_t
*shared_vmport_page
;
102 buffered_iopage_t
*buffered_io_page
;
103 QEMUTimer
*buffered_io_timer
;
104 CPUState
**cpu_by_vcpu_id
;
105 /* the evtchn port for polling the notification, */
106 evtchn_port_t
*ioreq_local_port
;
107 /* evtchn remote and local ports for buffered io */
108 evtchn_port_t bufioreq_remote_port
;
109 evtchn_port_t bufioreq_local_port
;
110 /* the evtchn fd for polling */
111 xenevtchn_handle
*xce_handle
;
112 /* which vcpu we are serving */
115 struct xs_handle
*xenstore
;
116 MemoryListener memory_listener
;
117 MemoryListener io_listener
;
118 QLIST_HEAD(, XenPciDevice
) dev_list
;
119 DeviceListener device_listener
;
120 hwaddr free_phys_offset
;
121 const XenPhysmap
*log_for_dirtybit
;
122 /* Buffer used by xen_sync_dirty_bitmap */
123 unsigned long *dirty_bitmap
;
130 /* Xen specific function for piix pci */
132 int xen_pci_slot_get_pirq(PCIDevice
*pci_dev
, int irq_num
)
134 return irq_num
+ ((pci_dev
->devfn
>> 3) << 2);
137 void xen_piix3_set_irq(void *opaque
, int irq_num
, int level
)
139 xen_set_pci_intx_level(xen_domid
, 0, 0, irq_num
>> 2,
143 void xen_piix_pci_write_config_client(uint32_t address
, uint32_t val
, int len
)
147 /* Scan for updates to PCI link routes (0x60-0x63). */
148 for (i
= 0; i
< len
; i
++) {
149 uint8_t v
= (val
>> (8 * i
)) & 0xff;
154 if (((address
+ i
) >= 0x60) && ((address
+ i
) <= 0x63)) {
155 xen_set_pci_link_route(xen_domid
, address
+ i
- 0x60, v
);
160 int xen_is_pirq_msi(uint32_t msi_data
)
162 /* If vector is 0, the msi is remapped into a pirq, passed as
165 return ((msi_data
& MSI_DATA_VECTOR_MASK
) >> MSI_DATA_VECTOR_SHIFT
) == 0;
168 void xen_hvm_inject_msi(uint64_t addr
, uint32_t data
)
170 xen_inject_msi(xen_domid
, addr
, data
);
173 static void xen_suspend_notifier(Notifier
*notifier
, void *data
)
175 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 3);
178 /* Xen Interrupt Controller */
180 static void xen_set_irq(void *opaque
, int irq
, int level
)
182 xen_set_isa_irq_level(xen_domid
, irq
, level
);
185 qemu_irq
*xen_interrupt_controller_init(void)
187 return qemu_allocate_irqs(xen_set_irq
, NULL
, 16);
192 static void xen_ram_init(PCMachineState
*pcms
,
193 ram_addr_t ram_size
, MemoryRegion
**ram_memory_p
)
195 MemoryRegion
*sysmem
= get_system_memory();
196 ram_addr_t block_len
;
197 uint64_t user_lowmem
= object_property_get_uint(qdev_get_machine(),
198 PC_MACHINE_MAX_RAM_BELOW_4G
,
201 /* Handle the machine opt max-ram-below-4g. It is basically doing
202 * min(xen limit, user limit).
205 user_lowmem
= HVM_BELOW_4G_RAM_END
; /* default */
207 if (HVM_BELOW_4G_RAM_END
<= user_lowmem
) {
208 user_lowmem
= HVM_BELOW_4G_RAM_END
;
211 if (ram_size
>= user_lowmem
) {
212 pcms
->above_4g_mem_size
= ram_size
- user_lowmem
;
213 pcms
->below_4g_mem_size
= user_lowmem
;
215 pcms
->above_4g_mem_size
= 0;
216 pcms
->below_4g_mem_size
= ram_size
;
218 if (!pcms
->above_4g_mem_size
) {
219 block_len
= ram_size
;
222 * Xen does not allocate the memory continuously, it keeps a
223 * hole of the size computed above or passed in.
225 block_len
= (1ULL << 32) + pcms
->above_4g_mem_size
;
227 memory_region_init_ram(&ram_memory
, NULL
, "xen.ram", block_len
,
229 *ram_memory_p
= &ram_memory
;
231 memory_region_init_alias(&ram_640k
, NULL
, "xen.ram.640k",
232 &ram_memory
, 0, 0xa0000);
233 memory_region_add_subregion(sysmem
, 0, &ram_640k
);
234 /* Skip of the VGA IO memory space, it will be registered later by the VGA
237 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
238 * the Options ROM, so it is registered here as RAM.
240 memory_region_init_alias(&ram_lo
, NULL
, "xen.ram.lo",
241 &ram_memory
, 0xc0000,
242 pcms
->below_4g_mem_size
- 0xc0000);
243 memory_region_add_subregion(sysmem
, 0xc0000, &ram_lo
);
244 if (pcms
->above_4g_mem_size
> 0) {
245 memory_region_init_alias(&ram_hi
, NULL
, "xen.ram.hi",
246 &ram_memory
, 0x100000000ULL
,
247 pcms
->above_4g_mem_size
);
248 memory_region_add_subregion(sysmem
, 0x100000000ULL
, &ram_hi
);
252 void xen_ram_alloc(ram_addr_t ram_addr
, ram_addr_t size
, MemoryRegion
*mr
,
255 unsigned long nr_pfn
;
259 if (runstate_check(RUN_STATE_INMIGRATE
)) {
260 /* RAM already populated in Xen */
261 fprintf(stderr
, "%s: do not alloc "RAM_ADDR_FMT
262 " bytes of ram at "RAM_ADDR_FMT
" when runstate is INMIGRATE\n",
263 __func__
, size
, ram_addr
);
267 if (mr
== &ram_memory
) {
271 trace_xen_ram_alloc(ram_addr
, size
);
273 nr_pfn
= size
>> TARGET_PAGE_BITS
;
274 pfn_list
= g_malloc(sizeof (*pfn_list
) * nr_pfn
);
276 for (i
= 0; i
< nr_pfn
; i
++) {
277 pfn_list
[i
] = (ram_addr
>> TARGET_PAGE_BITS
) + i
;
280 if (xc_domain_populate_physmap_exact(xen_xc
, xen_domid
, nr_pfn
, 0, 0, pfn_list
)) {
281 error_setg(errp
, "xen: failed to populate ram at " RAM_ADDR_FMT
,
288 static XenPhysmap
*get_physmapping(hwaddr start_addr
, ram_addr_t size
)
290 XenPhysmap
*physmap
= NULL
;
292 start_addr
&= TARGET_PAGE_MASK
;
294 QLIST_FOREACH(physmap
, &xen_physmap
, list
) {
295 if (range_covers_byte(physmap
->start_addr
, physmap
->size
, start_addr
)) {
302 static hwaddr
xen_phys_offset_to_gaddr(hwaddr phys_offset
, ram_addr_t size
)
304 hwaddr addr
= phys_offset
& TARGET_PAGE_MASK
;
305 XenPhysmap
*physmap
= NULL
;
307 QLIST_FOREACH(physmap
, &xen_physmap
, list
) {
308 if (range_covers_byte(physmap
->phys_offset
, physmap
->size
, addr
)) {
309 return physmap
->start_addr
+ (phys_offset
- physmap
->phys_offset
);
316 #ifdef XEN_COMPAT_PHYSMAP
317 static int xen_save_physmap(XenIOState
*state
, XenPhysmap
*physmap
)
319 char path
[80], value
[17];
321 snprintf(path
, sizeof(path
),
322 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/start_addr",
323 xen_domid
, (uint64_t)physmap
->phys_offset
);
324 snprintf(value
, sizeof(value
), "%"PRIx64
, (uint64_t)physmap
->start_addr
);
325 if (!xs_write(state
->xenstore
, 0, path
, value
, strlen(value
))) {
328 snprintf(path
, sizeof(path
),
329 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/size",
330 xen_domid
, (uint64_t)physmap
->phys_offset
);
331 snprintf(value
, sizeof(value
), "%"PRIx64
, (uint64_t)physmap
->size
);
332 if (!xs_write(state
->xenstore
, 0, path
, value
, strlen(value
))) {
336 snprintf(path
, sizeof(path
),
337 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/name",
338 xen_domid
, (uint64_t)physmap
->phys_offset
);
339 if (!xs_write(state
->xenstore
, 0, path
,
340 physmap
->name
, strlen(physmap
->name
))) {
347 static int xen_save_physmap(XenIOState
*state
, XenPhysmap
*physmap
)
353 static int xen_add_to_physmap(XenIOState
*state
,
357 hwaddr offset_within_region
)
359 unsigned long nr_pages
;
361 XenPhysmap
*physmap
= NULL
;
362 hwaddr pfn
, start_gpfn
;
363 hwaddr phys_offset
= memory_region_get_ram_addr(mr
);
366 if (get_physmapping(start_addr
, size
)) {
373 /* Xen can only handle a single dirty log region for now and we want
374 * the linear framebuffer to be that region.
375 * Avoid tracking any regions that is not videoram and avoid tracking
376 * the legacy vga region. */
377 if (mr
== framebuffer
&& start_addr
> 0xbffff) {
383 DPRINTF("mapping vram to %"HWADDR_PRIx
" - %"HWADDR_PRIx
"\n",
384 start_addr
, start_addr
+ size
);
386 mr_name
= memory_region_name(mr
);
388 physmap
= g_malloc(sizeof(XenPhysmap
));
390 physmap
->start_addr
= start_addr
;
391 physmap
->size
= size
;
392 physmap
->name
= mr_name
;
393 physmap
->phys_offset
= phys_offset
;
395 QLIST_INSERT_HEAD(&xen_physmap
, physmap
, list
);
397 if (runstate_check(RUN_STATE_INMIGRATE
)) {
398 /* Now when we have a physmap entry we can replace a dummy mapping with
399 * a real one of guest foreign memory. */
400 uint8_t *p
= xen_replace_cache_entry(phys_offset
, start_addr
, size
);
401 assert(p
&& p
== memory_region_get_ram_ptr(mr
));
406 pfn
= phys_offset
>> TARGET_PAGE_BITS
;
407 start_gpfn
= start_addr
>> TARGET_PAGE_BITS
;
408 nr_pages
= size
>> TARGET_PAGE_BITS
;
409 rc
= xendevicemodel_relocate_memory(xen_dmod
, xen_domid
, nr_pages
, pfn
,
412 int saved_errno
= errno
;
414 error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx
415 " to GFN %"HWADDR_PRIx
" failed: %s",
416 nr_pages
, pfn
, start_gpfn
, strerror(saved_errno
));
421 rc
= xendevicemodel_pin_memory_cacheattr(xen_dmod
, xen_domid
,
422 start_addr
>> TARGET_PAGE_BITS
,
423 (start_addr
+ size
- 1) >> TARGET_PAGE_BITS
,
424 XEN_DOMCTL_MEM_CACHEATTR_WB
);
426 error_report("pin_memory_cacheattr failed: %s", strerror(errno
));
428 return xen_save_physmap(state
, physmap
);
431 static int xen_remove_from_physmap(XenIOState
*state
,
436 XenPhysmap
*physmap
= NULL
;
437 hwaddr phys_offset
= 0;
439 physmap
= get_physmapping(start_addr
, size
);
440 if (physmap
== NULL
) {
444 phys_offset
= physmap
->phys_offset
;
445 size
= physmap
->size
;
447 DPRINTF("unmapping vram to %"HWADDR_PRIx
" - %"HWADDR_PRIx
", at "
448 "%"HWADDR_PRIx
"\n", start_addr
, start_addr
+ size
, phys_offset
);
450 size
>>= TARGET_PAGE_BITS
;
451 start_addr
>>= TARGET_PAGE_BITS
;
452 phys_offset
>>= TARGET_PAGE_BITS
;
453 rc
= xendevicemodel_relocate_memory(xen_dmod
, xen_domid
, size
, start_addr
,
456 int saved_errno
= errno
;
458 error_report("relocate_memory "RAM_ADDR_FMT
" pages"
459 " from GFN %"HWADDR_PRIx
460 " to GFN %"HWADDR_PRIx
" failed: %s",
461 size
, start_addr
, phys_offset
, strerror(saved_errno
));
466 QLIST_REMOVE(physmap
, list
);
467 if (state
->log_for_dirtybit
== physmap
) {
468 state
->log_for_dirtybit
= NULL
;
469 g_free(state
->dirty_bitmap
);
470 state
->dirty_bitmap
= NULL
;
477 static void xen_set_memory(struct MemoryListener
*listener
,
478 MemoryRegionSection
*section
,
481 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
482 hwaddr start_addr
= section
->offset_within_address_space
;
483 ram_addr_t size
= int128_get64(section
->size
);
484 bool log_dirty
= memory_region_is_logging(section
->mr
, DIRTY_MEMORY_VGA
);
485 hvmmem_type_t mem_type
;
487 if (section
->mr
== &ram_memory
) {
491 xen_map_memory_section(xen_domid
, state
->ioservid
,
494 xen_unmap_memory_section(xen_domid
, state
->ioservid
,
499 if (!memory_region_is_ram(section
->mr
)) {
503 if (log_dirty
!= add
) {
507 trace_xen_client_set_memory(start_addr
, size
, log_dirty
);
509 start_addr
&= TARGET_PAGE_MASK
;
510 size
= TARGET_PAGE_ALIGN(size
);
513 if (!memory_region_is_rom(section
->mr
)) {
514 xen_add_to_physmap(state
, start_addr
, size
,
515 section
->mr
, section
->offset_within_region
);
517 mem_type
= HVMMEM_ram_ro
;
518 if (xen_set_mem_type(xen_domid
, mem_type
,
519 start_addr
>> TARGET_PAGE_BITS
,
520 size
>> TARGET_PAGE_BITS
)) {
521 DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx
"\n",
526 if (xen_remove_from_physmap(state
, start_addr
, size
) < 0) {
527 DPRINTF("physmapping does not exist at "TARGET_FMT_plx
"\n", start_addr
);
532 static void xen_region_add(MemoryListener
*listener
,
533 MemoryRegionSection
*section
)
535 memory_region_ref(section
->mr
);
536 xen_set_memory(listener
, section
, true);
539 static void xen_region_del(MemoryListener
*listener
,
540 MemoryRegionSection
*section
)
542 xen_set_memory(listener
, section
, false);
543 memory_region_unref(section
->mr
);
546 static void xen_io_add(MemoryListener
*listener
,
547 MemoryRegionSection
*section
)
549 XenIOState
*state
= container_of(listener
, XenIOState
, io_listener
);
550 MemoryRegion
*mr
= section
->mr
;
552 if (mr
->ops
== &unassigned_io_ops
) {
556 memory_region_ref(mr
);
558 xen_map_io_section(xen_domid
, state
->ioservid
, section
);
561 static void xen_io_del(MemoryListener
*listener
,
562 MemoryRegionSection
*section
)
564 XenIOState
*state
= container_of(listener
, XenIOState
, io_listener
);
565 MemoryRegion
*mr
= section
->mr
;
567 if (mr
->ops
== &unassigned_io_ops
) {
571 xen_unmap_io_section(xen_domid
, state
->ioservid
, section
);
573 memory_region_unref(mr
);
576 static void xen_device_realize(DeviceListener
*listener
,
579 XenIOState
*state
= container_of(listener
, XenIOState
, device_listener
);
581 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
582 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
583 XenPciDevice
*xendev
= g_new(XenPciDevice
, 1);
585 xendev
->pci_dev
= pci_dev
;
586 xendev
->sbdf
= PCI_BUILD_BDF(pci_dev_bus_num(pci_dev
),
588 QLIST_INSERT_HEAD(&state
->dev_list
, xendev
, entry
);
590 xen_map_pcidev(xen_domid
, state
->ioservid
, pci_dev
);
594 static void xen_device_unrealize(DeviceListener
*listener
,
597 XenIOState
*state
= container_of(listener
, XenIOState
, device_listener
);
599 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
600 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
601 XenPciDevice
*xendev
, *next
;
603 xen_unmap_pcidev(xen_domid
, state
->ioservid
, pci_dev
);
605 QLIST_FOREACH_SAFE(xendev
, &state
->dev_list
, entry
, next
) {
606 if (xendev
->pci_dev
== pci_dev
) {
607 QLIST_REMOVE(xendev
, entry
);
615 static void xen_sync_dirty_bitmap(XenIOState
*state
,
619 hwaddr npages
= size
>> TARGET_PAGE_BITS
;
620 const int width
= sizeof(unsigned long) * 8;
621 size_t bitmap_size
= DIV_ROUND_UP(npages
, width
);
623 const XenPhysmap
*physmap
= NULL
;
625 physmap
= get_physmapping(start_addr
, size
);
626 if (physmap
== NULL
) {
631 if (state
->log_for_dirtybit
== NULL
) {
632 state
->log_for_dirtybit
= physmap
;
633 state
->dirty_bitmap
= g_new(unsigned long, bitmap_size
);
634 } else if (state
->log_for_dirtybit
!= physmap
) {
635 /* Only one range for dirty bitmap can be tracked. */
639 rc
= xen_track_dirty_vram(xen_domid
, start_addr
>> TARGET_PAGE_BITS
,
640 npages
, state
->dirty_bitmap
);
643 #define ENODATA ENOENT
645 if (errno
== ENODATA
) {
646 memory_region_set_dirty(framebuffer
, 0, size
);
647 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
648 ", 0x" TARGET_FMT_plx
"): %s\n",
649 start_addr
, start_addr
+ size
, strerror(errno
));
654 for (i
= 0; i
< bitmap_size
; i
++) {
655 unsigned long map
= state
->dirty_bitmap
[i
];
659 memory_region_set_dirty(framebuffer
,
660 (i
* width
+ j
) * TARGET_PAGE_SIZE
,
666 static void xen_log_start(MemoryListener
*listener
,
667 MemoryRegionSection
*section
,
670 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
672 if (new & ~old
& (1 << DIRTY_MEMORY_VGA
)) {
673 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
674 int128_get64(section
->size
));
678 static void xen_log_stop(MemoryListener
*listener
, MemoryRegionSection
*section
,
681 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
683 if (old
& ~new & (1 << DIRTY_MEMORY_VGA
)) {
684 state
->log_for_dirtybit
= NULL
;
685 g_free(state
->dirty_bitmap
);
686 state
->dirty_bitmap
= NULL
;
687 /* Disable dirty bit tracking */
688 xen_track_dirty_vram(xen_domid
, 0, 0, NULL
);
692 static void xen_log_sync(MemoryListener
*listener
, MemoryRegionSection
*section
)
694 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
696 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
697 int128_get64(section
->size
));
700 static void xen_log_global_start(MemoryListener
*listener
)
703 xen_in_migration
= true;
707 static void xen_log_global_stop(MemoryListener
*listener
)
709 xen_in_migration
= false;
712 static MemoryListener xen_memory_listener
= {
713 .region_add
= xen_region_add
,
714 .region_del
= xen_region_del
,
715 .log_start
= xen_log_start
,
716 .log_stop
= xen_log_stop
,
717 .log_sync
= xen_log_sync
,
718 .log_global_start
= xen_log_global_start
,
719 .log_global_stop
= xen_log_global_stop
,
723 static MemoryListener xen_io_listener
= {
724 .region_add
= xen_io_add
,
725 .region_del
= xen_io_del
,
729 static DeviceListener xen_device_listener
= {
730 .realize
= xen_device_realize
,
731 .unrealize
= xen_device_unrealize
,
734 /* get the ioreq packets from share mem */
735 static ioreq_t
*cpu_get_ioreq_from_shared_memory(XenIOState
*state
, int vcpu
)
737 ioreq_t
*req
= xen_vcpu_ioreq(state
->shared_page
, vcpu
);
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
);
748 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
750 req
->state
= STATE_IOREQ_INPROCESS
;
754 /* use poll to get the port notification */
755 /* ioreq_vec--out,the */
756 /* retval--the number of ioreq packet */
757 static ioreq_t
*cpu_get_ioreq(XenIOState
*state
)
759 MachineState
*ms
= MACHINE(qdev_get_machine());
760 unsigned int max_cpus
= ms
->smp
.max_cpus
;
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
));
772 for (i
= 0; i
< max_cpus
; i
++) {
773 if (state
->ioreq_local_port
[i
] == port
) {
779 hw_error("Fatal error while trying to get io event!\n");
782 /* unmask the wanted port again */
783 xenevtchn_unmask(state
->xce_handle
, port
);
785 /* get the io packet from shared memory */
786 state
->send_vcpu
= i
;
787 return cpu_get_ioreq_from_shared_memory(state
, i
);
790 /* read error or read nothing */
794 static uint32_t do_inp(uint32_t addr
, unsigned long size
)
798 return cpu_inb(addr
);
800 return cpu_inw(addr
);
802 return cpu_inl(addr
);
804 hw_error("inp: bad size: %04x %lx", addr
, size
);
808 static void do_outp(uint32_t addr
,
809 unsigned long size
, uint32_t val
)
813 return cpu_outb(addr
, val
);
815 return cpu_outw(addr
, val
);
817 return cpu_outl(addr
, val
);
819 hw_error("outp: bad size: %04x %lx", addr
, size
);
824 * Helper functions which read/write an object from/to physical guest
825 * memory, as part of the implementation of an ioreq.
828 * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
829 * val, req->size, 0/1)
830 * except without the integer overflow problems.
832 static void rw_phys_req_item(hwaddr addr
,
833 ioreq_t
*req
, uint32_t i
, void *val
, int rw
)
835 /* Do everything unsigned so overflow just results in a truncated result
836 * and accesses to undesired parts of guest memory, which is up
838 hwaddr offset
= (hwaddr
)req
->size
* i
;
844 cpu_physical_memory_rw(addr
, val
, req
->size
, rw
);
847 static inline void read_phys_req_item(hwaddr addr
,
848 ioreq_t
*req
, uint32_t i
, void *val
)
850 rw_phys_req_item(addr
, req
, i
, val
, 0);
852 static inline void write_phys_req_item(hwaddr addr
,
853 ioreq_t
*req
, uint32_t i
, void *val
)
855 rw_phys_req_item(addr
, req
, i
, val
, 1);
859 static void cpu_ioreq_pio(ioreq_t
*req
)
863 trace_cpu_ioreq_pio(req
, req
->dir
, req
->df
, req
->data_is_ptr
, req
->addr
,
864 req
->data
, req
->count
, req
->size
);
866 if (req
->size
> sizeof(uint32_t)) {
867 hw_error("PIO: bad size (%u)", req
->size
);
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
,
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
);
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
,
887 do_outp(req
->addr
, req
->size
, req
->data
);
889 for (i
= 0; i
< req
->count
; i
++) {
892 read_phys_req_item(req
->data
, req
, i
, &tmp
);
893 do_outp(req
->addr
, req
->size
, tmp
);
899 static void cpu_ioreq_move(ioreq_t
*req
)
903 trace_cpu_ioreq_move(req
, req
->dir
, req
->df
, req
->data_is_ptr
, req
->addr
,
904 req
->data
, req
->count
, req
->size
);
906 if (req
->size
> sizeof(req
->data
)) {
907 hw_error("MMIO: bad size (%u)", req
->size
);
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
);
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
);
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
);
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
);
937 static void cpu_ioreq_config(XenIOState
*state
, ioreq_t
*req
)
939 uint32_t sbdf
= req
->addr
>> 32;
940 uint32_t reg
= req
->addr
;
941 XenPciDevice
*xendev
;
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
);
948 if (req
->count
!= 1) {
949 hw_error("PCI config access: bad count (%u)", req
->count
);
952 QLIST_FOREACH(xendev
, &state
->dev_list
, entry
) {
953 if (xendev
->sbdf
!= sbdf
) {
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
,
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
);
974 if (req
->dir
== IOREQ_READ
) {
975 tmp
= pci_host_config_read_common(
976 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
978 trace_cpu_ioreq_config_read(req
, xendev
->sbdf
, reg
,
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
,
985 pci_host_config_write_common(
986 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
993 static void regs_to_cpu(vmware_regs_t
*vmport_regs
, ioreq_t
*req
)
998 cpu
= X86_CPU(current_cpu
);
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
;
1008 static void regs_from_cpu(vmware_regs_t
*vmport_regs
)
1010 X86CPU
*cpu
= X86_CPU(current_cpu
);
1011 CPUX86State
*env
= &cpu
->env
;
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
];
1020 static void handle_vmport_ioreq(XenIOState
*state
, ioreq_t
*req
)
1022 vmware_regs_t
*vmport_regs
;
1024 assert(state
->shared_vmport_page
);
1026 &state
->shared_vmport_page
->vcpu_vmport_regs
[state
->send_vcpu
];
1027 QEMU_BUILD_BUG_ON(sizeof(*req
) < sizeof(*vmport_regs
));
1029 current_cpu
= state
->cpu_by_vcpu_id
[state
->send_vcpu
];
1030 regs_to_cpu(vmport_regs
, req
);
1032 regs_from_cpu(vmport_regs
);
1036 static void handle_ioreq(XenIOState
*state
, ioreq_t
*req
)
1038 trace_handle_ioreq(req
, req
->type
, req
->dir
, req
->df
, req
->data_is_ptr
,
1039 req
->addr
, req
->data
, req
->count
, req
->size
);
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;
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
);
1050 switch (req
->type
) {
1051 case IOREQ_TYPE_PIO
:
1054 case IOREQ_TYPE_COPY
:
1055 cpu_ioreq_move(req
);
1057 case IOREQ_TYPE_VMWARE_PORT
:
1058 handle_vmport_ioreq(state
, req
);
1060 case IOREQ_TYPE_TIMEOFFSET
:
1062 case IOREQ_TYPE_INVALIDATE
:
1063 xen_invalidate_map_cache();
1065 case IOREQ_TYPE_PCI_CONFIG
:
1066 cpu_ioreq_config(state
, req
);
1069 hw_error("Invalid ioreq type 0x%x\n", req
->type
);
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
);
1077 static int handle_buffered_iopage(XenIOState
*state
)
1079 buffered_iopage_t
*buf_page
= state
->buffered_io_page
;
1080 buf_ioreq_t
*buf_req
= NULL
;
1088 memset(&req
, 0x00, sizeof(req
));
1089 req
.state
= STATE_IOREQ_READY
;
1091 req
.dir
= IOREQ_WRITE
;
1094 uint32_t rdptr
= buf_page
->read_pointer
, wrptr
;
1097 wrptr
= buf_page
->write_pointer
;
1099 if (rdptr
!= buf_page
->read_pointer
) {
1102 if (rdptr
== wrptr
) {
1105 buf_req
= &buf_page
->buf_ioreq
[rdptr
% IOREQ_BUFFER_SLOT_NUM
];
1106 req
.size
= 1U << buf_req
->size
;
1107 req
.addr
= buf_req
->addr
;
1108 req
.data
= buf_req
->data
;
1109 req
.type
= buf_req
->type
;
1111 qw
= (req
.size
== 8);
1113 if (rdptr
+ 1 == wrptr
) {
1114 hw_error("Incomplete quad word buffered ioreq");
1116 buf_req
= &buf_page
->buf_ioreq
[(rdptr
+ 1) %
1117 IOREQ_BUFFER_SLOT_NUM
];
1118 req
.data
|= ((uint64_t)buf_req
->data
) << 32;
1122 handle_ioreq(state
, &req
);
1124 /* Only req.data may get updated by handle_ioreq(), albeit even that
1125 * should not happen as such data would never make it to the guest (we
1126 * can only usefully see writes here after all).
1128 assert(req
.state
== STATE_IOREQ_READY
);
1129 assert(req
.count
== 1);
1130 assert(req
.dir
== IOREQ_WRITE
);
1131 assert(!req
.data_is_ptr
);
1133 atomic_add(&buf_page
->read_pointer
, qw
+ 1);
1139 static void handle_buffered_io(void *opaque
)
1141 XenIOState
*state
= opaque
;
1143 if (handle_buffered_iopage(state
)) {
1144 timer_mod(state
->buffered_io_timer
,
1145 BUFFER_IO_MAX_DELAY
+ qemu_clock_get_ms(QEMU_CLOCK_REALTIME
));
1147 timer_del(state
->buffered_io_timer
);
1148 xenevtchn_unmask(state
->xce_handle
, state
->bufioreq_local_port
);
1152 static void cpu_handle_ioreq(void *opaque
)
1154 XenIOState
*state
= opaque
;
1155 ioreq_t
*req
= cpu_get_ioreq(state
);
1157 handle_buffered_iopage(state
);
1159 ioreq_t copy
= *req
;
1162 handle_ioreq(state
, ©
);
1163 req
->data
= copy
.data
;
1165 if (req
->state
!= STATE_IOREQ_INPROCESS
) {
1166 fprintf(stderr
, "Badness in I/O request ... not in service?!: "
1167 "%x, ptr: %x, port: %"PRIx64
", "
1168 "data: %"PRIx64
", count: %u, size: %u, type: %u\n",
1169 req
->state
, req
->data_is_ptr
, req
->addr
,
1170 req
->data
, req
->count
, req
->size
, req
->type
);
1171 destroy_hvm_domain(false);
1175 xen_wmb(); /* Update ioreq contents /then/ update state. */
1178 * We do this before we send the response so that the tools
1179 * have the opportunity to pick up on the reset before the
1180 * guest resumes and does a hlt with interrupts disabled which
1181 * causes Xen to powerdown the domain.
1183 if (runstate_is_running()) {
1184 ShutdownCause request
;
1186 if (qemu_shutdown_requested_get()) {
1187 destroy_hvm_domain(false);
1189 request
= qemu_reset_requested_get();
1191 qemu_system_reset(request
);
1192 destroy_hvm_domain(true);
1196 req
->state
= STATE_IORESP_READY
;
1197 xenevtchn_notify(state
->xce_handle
,
1198 state
->ioreq_local_port
[state
->send_vcpu
]);
1202 static void xen_main_loop_prepare(XenIOState
*state
)
1206 if (state
->xce_handle
!= NULL
) {
1207 evtchn_fd
= xenevtchn_fd(state
->xce_handle
);
1210 state
->buffered_io_timer
= timer_new_ms(QEMU_CLOCK_REALTIME
, handle_buffered_io
,
1213 if (evtchn_fd
!= -1) {
1214 CPUState
*cpu_state
;
1216 DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__
);
1217 CPU_FOREACH(cpu_state
) {
1218 DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
1219 __func__
, cpu_state
->cpu_index
, cpu_state
);
1220 state
->cpu_by_vcpu_id
[cpu_state
->cpu_index
] = cpu_state
;
1222 qemu_set_fd_handler(evtchn_fd
, cpu_handle_ioreq
, NULL
, state
);
1227 static void xen_hvm_change_state_handler(void *opaque
, int running
,
1230 XenIOState
*state
= opaque
;
1233 xen_main_loop_prepare(state
);
1236 xen_set_ioreq_server_state(xen_domid
,
1238 (rstate
== RUN_STATE_RUNNING
));
1241 static void xen_exit_notifier(Notifier
*n
, void *data
)
1243 XenIOState
*state
= container_of(n
, XenIOState
, exit
);
1245 xenevtchn_close(state
->xce_handle
);
1246 xs_daemon_close(state
->xenstore
);
1249 #ifdef XEN_COMPAT_PHYSMAP
1250 static void xen_read_physmap(XenIOState
*state
)
1252 XenPhysmap
*physmap
= NULL
;
1253 unsigned int len
, num
, i
;
1254 char path
[80], *value
= NULL
;
1255 char **entries
= NULL
;
1257 snprintf(path
, sizeof(path
),
1258 "/local/domain/0/device-model/%d/physmap", xen_domid
);
1259 entries
= xs_directory(state
->xenstore
, 0, path
, &num
);
1260 if (entries
== NULL
)
1263 for (i
= 0; i
< num
; i
++) {
1264 physmap
= g_malloc(sizeof (XenPhysmap
));
1265 physmap
->phys_offset
= strtoull(entries
[i
], NULL
, 16);
1266 snprintf(path
, sizeof(path
),
1267 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1268 xen_domid
, entries
[i
]);
1269 value
= xs_read(state
->xenstore
, 0, path
, &len
);
1270 if (value
== NULL
) {
1274 physmap
->start_addr
= strtoull(value
, NULL
, 16);
1277 snprintf(path
, sizeof(path
),
1278 "/local/domain/0/device-model/%d/physmap/%s/size",
1279 xen_domid
, entries
[i
]);
1280 value
= xs_read(state
->xenstore
, 0, path
, &len
);
1281 if (value
== NULL
) {
1285 physmap
->size
= strtoull(value
, NULL
, 16);
1288 snprintf(path
, sizeof(path
),
1289 "/local/domain/0/device-model/%d/physmap/%s/name",
1290 xen_domid
, entries
[i
]);
1291 physmap
->name
= xs_read(state
->xenstore
, 0, path
, &len
);
1293 QLIST_INSERT_HEAD(&xen_physmap
, physmap
, list
);
1298 static void xen_read_physmap(XenIOState
*state
)
1303 static void xen_wakeup_notifier(Notifier
*notifier
, void *data
)
1305 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 0);
1308 static int xen_map_ioreq_server(XenIOState
*state
)
1311 xenforeignmemory_resource_handle
*fres
;
1312 xen_pfn_t ioreq_pfn
;
1313 xen_pfn_t bufioreq_pfn
;
1314 evtchn_port_t bufioreq_evtchn
;
1318 * Attempt to map using the resource API and fall back to normal
1319 * foreign mapping if this is not supported.
1321 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq
!= 0);
1322 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
1323 fres
= xenforeignmemory_map_resource(xen_fmem
, xen_domid
,
1324 XENMEM_resource_ioreq_server
,
1325 state
->ioservid
, 0, 2,
1327 PROT_READ
| PROT_WRITE
, 0);
1329 trace_xen_map_resource_ioreq(state
->ioservid
, addr
);
1330 state
->buffered_io_page
= addr
;
1331 state
->shared_page
= addr
+ TARGET_PAGE_SIZE
;
1332 } else if (errno
!= EOPNOTSUPP
) {
1333 error_report("failed to map ioreq server resources: error %d handle=%p",
1338 rc
= xen_get_ioreq_server_info(xen_domid
, state
->ioservid
,
1339 (state
->shared_page
== NULL
) ?
1341 (state
->buffered_io_page
== NULL
) ?
1342 &bufioreq_pfn
: NULL
,
1345 error_report("failed to get ioreq server info: error %d handle=%p",
1350 if (state
->shared_page
== NULL
) {
1351 DPRINTF("shared page at pfn %lx\n", ioreq_pfn
);
1353 state
->shared_page
= xenforeignmemory_map(xen_fmem
, xen_domid
,
1354 PROT_READ
| PROT_WRITE
,
1355 1, &ioreq_pfn
, NULL
);
1356 if (state
->shared_page
== NULL
) {
1357 error_report("map shared IO page returned error %d handle=%p",
1362 if (state
->buffered_io_page
== NULL
) {
1363 DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn
);
1365 state
->buffered_io_page
= xenforeignmemory_map(xen_fmem
, xen_domid
,
1366 PROT_READ
| PROT_WRITE
,
1369 if (state
->buffered_io_page
== NULL
) {
1370 error_report("map buffered IO page returned error %d", errno
);
1375 if (state
->shared_page
== NULL
|| state
->buffered_io_page
== NULL
) {
1379 DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn
);
1381 state
->bufioreq_remote_port
= bufioreq_evtchn
;
1386 void xen_hvm_init(PCMachineState
*pcms
, MemoryRegion
**ram_memory
)
1388 MachineState
*ms
= MACHINE(pcms
);
1389 unsigned int max_cpus
= ms
->smp
.max_cpus
;
1391 xen_pfn_t ioreq_pfn
;
1394 state
= g_malloc0(sizeof (XenIOState
));
1396 state
->xce_handle
= xenevtchn_open(NULL
, 0);
1397 if (state
->xce_handle
== NULL
) {
1398 perror("xen: event channel open");
1402 state
->xenstore
= xs_daemon_open();
1403 if (state
->xenstore
== NULL
) {
1404 perror("xen: xenstore open");
1408 xen_create_ioreq_server(xen_domid
, &state
->ioservid
);
1410 state
->exit
.notify
= xen_exit_notifier
;
1411 qemu_add_exit_notifier(&state
->exit
);
1413 state
->suspend
.notify
= xen_suspend_notifier
;
1414 qemu_register_suspend_notifier(&state
->suspend
);
1416 state
->wakeup
.notify
= xen_wakeup_notifier
;
1417 qemu_register_wakeup_notifier(&state
->wakeup
);
1420 * Register wake-up support in QMP query-current-machine API
1422 qemu_register_wakeup_support();
1424 rc
= xen_map_ioreq_server(state
);
1429 rc
= xen_get_vmport_regs_pfn(xen_xc
, xen_domid
, &ioreq_pfn
);
1431 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn
);
1432 state
->shared_vmport_page
=
1433 xenforeignmemory_map(xen_fmem
, xen_domid
, PROT_READ
|PROT_WRITE
,
1434 1, &ioreq_pfn
, NULL
);
1435 if (state
->shared_vmport_page
== NULL
) {
1436 error_report("map shared vmport IO page returned error %d handle=%p",
1440 } else if (rc
!= -ENOSYS
) {
1441 error_report("get vmport regs pfn returned error %d, rc=%d",
1446 /* Note: cpus is empty at this point in init */
1447 state
->cpu_by_vcpu_id
= g_malloc0(max_cpus
* sizeof(CPUState
*));
1449 rc
= xen_set_ioreq_server_state(xen_domid
, state
->ioservid
, true);
1451 error_report("failed to enable ioreq server info: error %d handle=%p",
1456 state
->ioreq_local_port
= g_malloc0(max_cpus
* sizeof (evtchn_port_t
));
1458 /* FIXME: how about if we overflow the page here? */
1459 for (i
= 0; i
< max_cpus
; i
++) {
1460 rc
= xenevtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
1461 xen_vcpu_eport(state
->shared_page
, i
));
1463 error_report("shared evtchn %d bind error %d", i
, errno
);
1466 state
->ioreq_local_port
[i
] = rc
;
1469 rc
= xenevtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
1470 state
->bufioreq_remote_port
);
1472 error_report("buffered evtchn bind error %d", errno
);
1475 state
->bufioreq_local_port
= rc
;
1477 /* Init RAM management */
1478 #ifdef XEN_COMPAT_PHYSMAP
1479 xen_map_cache_init(xen_phys_offset_to_gaddr
, state
);
1481 xen_map_cache_init(NULL
, state
);
1483 xen_ram_init(pcms
, ram_size
, ram_memory
);
1485 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler
, state
);
1487 state
->memory_listener
= xen_memory_listener
;
1488 memory_listener_register(&state
->memory_listener
, &address_space_memory
);
1489 state
->log_for_dirtybit
= NULL
;
1491 state
->io_listener
= xen_io_listener
;
1492 memory_listener_register(&state
->io_listener
, &address_space_io
);
1494 state
->device_listener
= xen_device_listener
;
1495 QLIST_INIT(&state
->dev_list
);
1496 device_listener_register(&state
->device_listener
);
1500 /* Initialize backend core & drivers */
1501 if (xen_be_init() != 0) {
1502 error_report("xen backend core setup failed");
1505 xen_be_register_common();
1507 QLIST_INIT(&xen_physmap
);
1508 xen_read_physmap(state
);
1510 /* Disable ACPI build because Xen handles it */
1511 pcms
->acpi_build_enabled
= false;
1516 error_report("xen hardware virtual machine initialisation failed");
1520 void destroy_hvm_domain(bool reboot
)
1522 xc_interface
*xc_handle
;
1526 unsigned int reason
= reboot
? SHUTDOWN_reboot
: SHUTDOWN_poweroff
;
1529 rc
= xendevicemodel_shutdown(xen_dmod
, xen_domid
, reason
);
1533 if (errno
!= ENOTTY
/* old Xen */) {
1534 perror("xendevicemodel_shutdown failed");
1536 /* well, try the old thing then */
1539 xc_handle
= xc_interface_open(0, 0, 0);
1540 if (xc_handle
== NULL
) {
1541 fprintf(stderr
, "Cannot acquire xenctrl handle\n");
1543 sts
= xc_domain_shutdown(xc_handle
, xen_domid
, reason
);
1545 fprintf(stderr
, "xc_domain_shutdown failed to issue %s, "
1546 "sts %d, %s\n", reboot
? "reboot" : "poweroff",
1547 sts
, strerror(errno
));
1549 fprintf(stderr
, "Issued domain %d %s\n", xen_domid
,
1550 reboot
? "reboot" : "poweroff");
1552 xc_interface_close(xc_handle
);
1556 void xen_register_framebuffer(MemoryRegion
*mr
)
1561 void xen_shutdown_fatal_error(const char *fmt
, ...)
1566 vfprintf(stderr
, fmt
, ap
);
1568 fprintf(stderr
, "Will destroy the domain.\n");
1569 /* destroy the domain */
1570 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR
);
1573 void xen_hvm_modified_memory(ram_addr_t start
, ram_addr_t length
)
1575 if (unlikely(xen_in_migration
)) {
1577 ram_addr_t start_pfn
, nb_pages
;
1579 start
= xen_phys_offset_to_gaddr(start
, length
);
1582 length
= TARGET_PAGE_SIZE
;
1584 start_pfn
= start
>> TARGET_PAGE_BITS
;
1585 nb_pages
= ((start
+ length
+ TARGET_PAGE_SIZE
- 1) >> TARGET_PAGE_BITS
)
1587 rc
= xen_modified_memory(xen_domid
, start_pfn
, nb_pages
);
1590 "%s failed for "RAM_ADDR_FMT
" ("RAM_ADDR_FMT
"): %i, %s\n",
1591 __func__
, start
, nb_pages
, errno
, strerror(errno
));
1596 void qmp_xen_set_global_dirty_log(bool enable
, Error
**errp
)
1599 memory_global_dirty_log_start();
1601 memory_global_dirty_log_stop();