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"
19 #include "hw/i386/apic-msidef.h"
20 #include "hw/xen/xen_common.h"
21 #include "hw/xen/xen-legacy-backend.h"
22 #include "hw/xen/xen-bus.h"
23 #include "qapi/error.h"
24 #include "qapi/qapi-commands-misc.h"
25 #include "qemu/error-report.h"
26 #include "qemu/main-loop.h"
27 #include "qemu/range.h"
28 #include "sysemu/xen-mapcache.h"
30 #include "exec/address-spaces.h"
32 #include <xen/hvm/ioreq.h>
33 #include <xen/hvm/e820.h>
35 //#define DEBUG_XEN_HVM
38 #define DPRINTF(fmt, ...) \
39 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
41 #define DPRINTF(fmt, ...) \
45 static MemoryRegion ram_memory
, ram_640k
, ram_lo
, ram_hi
;
46 static MemoryRegion
*framebuffer
;
47 static bool xen_in_migration
;
49 /* Compatibility with older version */
51 /* This allows QEMU to build on a system that has Xen 4.5 or earlier
52 * installed. This here (not in hw/xen/xen_common.h) because xen/hvm/ioreq.h
53 * needs to be included before this block and hw/xen/xen_common.h needs to
54 * be included before xen/hvm/ioreq.h
56 #ifndef IOREQ_TYPE_VMWARE_PORT
57 #define IOREQ_TYPE_VMWARE_PORT 3
65 typedef struct vmware_regs vmware_regs_t
;
67 struct shared_vmport_iopage
{
68 struct vmware_regs vcpu_vmport_regs
[1];
70 typedef struct shared_vmport_iopage shared_vmport_iopage_t
;
73 static inline uint32_t xen_vcpu_eport(shared_iopage_t
*shared_page
, int i
)
75 return shared_page
->vcpu_ioreq
[i
].vp_eport
;
77 static inline ioreq_t
*xen_vcpu_ioreq(shared_iopage_t
*shared_page
, int vcpu
)
79 return &shared_page
->vcpu_ioreq
[vcpu
];
82 #define BUFFER_IO_MAX_DELAY 100
84 typedef struct XenPhysmap
{
90 QLIST_ENTRY(XenPhysmap
) list
;
93 static QLIST_HEAD(, XenPhysmap
) xen_physmap
;
95 typedef struct XenPciDevice
{
98 QLIST_ENTRY(XenPciDevice
) entry
;
101 typedef struct XenIOState
{
103 shared_iopage_t
*shared_page
;
104 shared_vmport_iopage_t
*shared_vmport_page
;
105 buffered_iopage_t
*buffered_io_page
;
106 QEMUTimer
*buffered_io_timer
;
107 CPUState
**cpu_by_vcpu_id
;
108 /* the evtchn port for polling the notification, */
109 evtchn_port_t
*ioreq_local_port
;
110 /* evtchn remote and local ports for buffered io */
111 evtchn_port_t bufioreq_remote_port
;
112 evtchn_port_t bufioreq_local_port
;
113 /* the evtchn fd for polling */
114 xenevtchn_handle
*xce_handle
;
115 /* which vcpu we are serving */
118 struct xs_handle
*xenstore
;
119 MemoryListener memory_listener
;
120 MemoryListener io_listener
;
121 QLIST_HEAD(, XenPciDevice
) dev_list
;
122 DeviceListener device_listener
;
123 hwaddr free_phys_offset
;
124 const XenPhysmap
*log_for_dirtybit
;
125 /* Buffer used by xen_sync_dirty_bitmap */
126 unsigned long *dirty_bitmap
;
133 /* Xen specific function for piix pci */
135 int xen_pci_slot_get_pirq(PCIDevice
*pci_dev
, int irq_num
)
137 return irq_num
+ ((pci_dev
->devfn
>> 3) << 2);
140 void xen_piix3_set_irq(void *opaque
, int irq_num
, int level
)
142 xen_set_pci_intx_level(xen_domid
, 0, 0, irq_num
>> 2,
146 void xen_piix_pci_write_config_client(uint32_t address
, uint32_t val
, int len
)
150 /* Scan for updates to PCI link routes (0x60-0x63). */
151 for (i
= 0; i
< len
; i
++) {
152 uint8_t v
= (val
>> (8 * i
)) & 0xff;
157 if (((address
+ i
) >= 0x60) && ((address
+ i
) <= 0x63)) {
158 xen_set_pci_link_route(xen_domid
, address
+ i
- 0x60, v
);
163 int xen_is_pirq_msi(uint32_t msi_data
)
165 /* If vector is 0, the msi is remapped into a pirq, passed as
168 return ((msi_data
& MSI_DATA_VECTOR_MASK
) >> MSI_DATA_VECTOR_SHIFT
) == 0;
171 void xen_hvm_inject_msi(uint64_t addr
, uint32_t data
)
173 xen_inject_msi(xen_domid
, addr
, data
);
176 static void xen_suspend_notifier(Notifier
*notifier
, void *data
)
178 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 3);
181 /* Xen Interrupt Controller */
183 static void xen_set_irq(void *opaque
, int irq
, int level
)
185 xen_set_isa_irq_level(xen_domid
, irq
, level
);
188 qemu_irq
*xen_interrupt_controller_init(void)
190 return qemu_allocate_irqs(xen_set_irq
, NULL
, 16);
195 static void xen_ram_init(PCMachineState
*pcms
,
196 ram_addr_t ram_size
, MemoryRegion
**ram_memory_p
)
198 MemoryRegion
*sysmem
= get_system_memory();
199 ram_addr_t block_len
;
200 uint64_t user_lowmem
= object_property_get_uint(qdev_get_machine(),
201 PC_MACHINE_MAX_RAM_BELOW_4G
,
204 /* Handle the machine opt max-ram-below-4g. It is basically doing
205 * min(xen limit, user limit).
208 user_lowmem
= HVM_BELOW_4G_RAM_END
; /* default */
210 if (HVM_BELOW_4G_RAM_END
<= user_lowmem
) {
211 user_lowmem
= HVM_BELOW_4G_RAM_END
;
214 if (ram_size
>= user_lowmem
) {
215 pcms
->above_4g_mem_size
= ram_size
- user_lowmem
;
216 pcms
->below_4g_mem_size
= user_lowmem
;
218 pcms
->above_4g_mem_size
= 0;
219 pcms
->below_4g_mem_size
= ram_size
;
221 if (!pcms
->above_4g_mem_size
) {
222 block_len
= ram_size
;
225 * Xen does not allocate the memory continuously, it keeps a
226 * hole of the size computed above or passed in.
228 block_len
= (1ULL << 32) + pcms
->above_4g_mem_size
;
230 memory_region_init_ram(&ram_memory
, NULL
, "xen.ram", block_len
,
232 *ram_memory_p
= &ram_memory
;
234 memory_region_init_alias(&ram_640k
, NULL
, "xen.ram.640k",
235 &ram_memory
, 0, 0xa0000);
236 memory_region_add_subregion(sysmem
, 0, &ram_640k
);
237 /* Skip of the VGA IO memory space, it will be registered later by the VGA
240 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
241 * the Options ROM, so it is registered here as RAM.
243 memory_region_init_alias(&ram_lo
, NULL
, "xen.ram.lo",
244 &ram_memory
, 0xc0000,
245 pcms
->below_4g_mem_size
- 0xc0000);
246 memory_region_add_subregion(sysmem
, 0xc0000, &ram_lo
);
247 if (pcms
->above_4g_mem_size
> 0) {
248 memory_region_init_alias(&ram_hi
, NULL
, "xen.ram.hi",
249 &ram_memory
, 0x100000000ULL
,
250 pcms
->above_4g_mem_size
);
251 memory_region_add_subregion(sysmem
, 0x100000000ULL
, &ram_hi
);
255 void xen_ram_alloc(ram_addr_t ram_addr
, ram_addr_t size
, MemoryRegion
*mr
,
258 unsigned long nr_pfn
;
262 if (runstate_check(RUN_STATE_INMIGRATE
)) {
263 /* RAM already populated in Xen */
264 fprintf(stderr
, "%s: do not alloc "RAM_ADDR_FMT
265 " bytes of ram at "RAM_ADDR_FMT
" when runstate is INMIGRATE\n",
266 __func__
, size
, ram_addr
);
270 if (mr
== &ram_memory
) {
274 trace_xen_ram_alloc(ram_addr
, size
);
276 nr_pfn
= size
>> TARGET_PAGE_BITS
;
277 pfn_list
= g_malloc(sizeof (*pfn_list
) * nr_pfn
);
279 for (i
= 0; i
< nr_pfn
; i
++) {
280 pfn_list
[i
] = (ram_addr
>> TARGET_PAGE_BITS
) + i
;
283 if (xc_domain_populate_physmap_exact(xen_xc
, xen_domid
, nr_pfn
, 0, 0, pfn_list
)) {
284 error_setg(errp
, "xen: failed to populate ram at " RAM_ADDR_FMT
,
291 static XenPhysmap
*get_physmapping(hwaddr start_addr
, ram_addr_t size
)
293 XenPhysmap
*physmap
= NULL
;
295 start_addr
&= TARGET_PAGE_MASK
;
297 QLIST_FOREACH(physmap
, &xen_physmap
, list
) {
298 if (range_covers_byte(physmap
->start_addr
, physmap
->size
, start_addr
)) {
305 static hwaddr
xen_phys_offset_to_gaddr(hwaddr phys_offset
, ram_addr_t size
)
307 hwaddr addr
= phys_offset
& TARGET_PAGE_MASK
;
308 XenPhysmap
*physmap
= NULL
;
310 QLIST_FOREACH(physmap
, &xen_physmap
, list
) {
311 if (range_covers_byte(physmap
->phys_offset
, physmap
->size
, addr
)) {
312 return physmap
->start_addr
+ (phys_offset
- physmap
->phys_offset
);
319 #ifdef XEN_COMPAT_PHYSMAP
320 static int xen_save_physmap(XenIOState
*state
, XenPhysmap
*physmap
)
322 char path
[80], value
[17];
324 snprintf(path
, sizeof(path
),
325 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/start_addr",
326 xen_domid
, (uint64_t)physmap
->phys_offset
);
327 snprintf(value
, sizeof(value
), "%"PRIx64
, (uint64_t)physmap
->start_addr
);
328 if (!xs_write(state
->xenstore
, 0, path
, value
, strlen(value
))) {
331 snprintf(path
, sizeof(path
),
332 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/size",
333 xen_domid
, (uint64_t)physmap
->phys_offset
);
334 snprintf(value
, sizeof(value
), "%"PRIx64
, (uint64_t)physmap
->size
);
335 if (!xs_write(state
->xenstore
, 0, path
, value
, strlen(value
))) {
339 snprintf(path
, sizeof(path
),
340 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/name",
341 xen_domid
, (uint64_t)physmap
->phys_offset
);
342 if (!xs_write(state
->xenstore
, 0, path
,
343 physmap
->name
, strlen(physmap
->name
))) {
350 static int xen_save_physmap(XenIOState
*state
, XenPhysmap
*physmap
)
356 static int xen_add_to_physmap(XenIOState
*state
,
360 hwaddr offset_within_region
)
362 unsigned long nr_pages
;
364 XenPhysmap
*physmap
= NULL
;
365 hwaddr pfn
, start_gpfn
;
366 hwaddr phys_offset
= memory_region_get_ram_addr(mr
);
369 if (get_physmapping(start_addr
, size
)) {
376 /* Xen can only handle a single dirty log region for now and we want
377 * the linear framebuffer to be that region.
378 * Avoid tracking any regions that is not videoram and avoid tracking
379 * the legacy vga region. */
380 if (mr
== framebuffer
&& start_addr
> 0xbffff) {
386 DPRINTF("mapping vram to %"HWADDR_PRIx
" - %"HWADDR_PRIx
"\n",
387 start_addr
, start_addr
+ size
);
389 mr_name
= memory_region_name(mr
);
391 physmap
= g_malloc(sizeof(XenPhysmap
));
393 physmap
->start_addr
= start_addr
;
394 physmap
->size
= size
;
395 physmap
->name
= mr_name
;
396 physmap
->phys_offset
= phys_offset
;
398 QLIST_INSERT_HEAD(&xen_physmap
, physmap
, list
);
400 if (runstate_check(RUN_STATE_INMIGRATE
)) {
401 /* Now when we have a physmap entry we can replace a dummy mapping with
402 * a real one of guest foreign memory. */
403 uint8_t *p
= xen_replace_cache_entry(phys_offset
, start_addr
, size
);
404 assert(p
&& p
== memory_region_get_ram_ptr(mr
));
409 pfn
= phys_offset
>> TARGET_PAGE_BITS
;
410 start_gpfn
= start_addr
>> TARGET_PAGE_BITS
;
411 nr_pages
= size
>> TARGET_PAGE_BITS
;
412 rc
= xendevicemodel_relocate_memory(xen_dmod
, xen_domid
, nr_pages
, pfn
,
415 int saved_errno
= errno
;
417 error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx
418 " to GFN %"HWADDR_PRIx
" failed: %s",
419 nr_pages
, pfn
, start_gpfn
, strerror(saved_errno
));
424 rc
= xendevicemodel_pin_memory_cacheattr(xen_dmod
, xen_domid
,
425 start_addr
>> TARGET_PAGE_BITS
,
426 (start_addr
+ size
- 1) >> TARGET_PAGE_BITS
,
427 XEN_DOMCTL_MEM_CACHEATTR_WB
);
429 error_report("pin_memory_cacheattr failed: %s", strerror(errno
));
431 return xen_save_physmap(state
, physmap
);
434 static int xen_remove_from_physmap(XenIOState
*state
,
439 XenPhysmap
*physmap
= NULL
;
440 hwaddr phys_offset
= 0;
442 physmap
= get_physmapping(start_addr
, size
);
443 if (physmap
== NULL
) {
447 phys_offset
= physmap
->phys_offset
;
448 size
= physmap
->size
;
450 DPRINTF("unmapping vram to %"HWADDR_PRIx
" - %"HWADDR_PRIx
", at "
451 "%"HWADDR_PRIx
"\n", start_addr
, start_addr
+ size
, phys_offset
);
453 size
>>= TARGET_PAGE_BITS
;
454 start_addr
>>= TARGET_PAGE_BITS
;
455 phys_offset
>>= TARGET_PAGE_BITS
;
456 rc
= xendevicemodel_relocate_memory(xen_dmod
, xen_domid
, size
, start_addr
,
459 int saved_errno
= errno
;
461 error_report("relocate_memory "RAM_ADDR_FMT
" pages"
462 " from GFN %"HWADDR_PRIx
463 " to GFN %"HWADDR_PRIx
" failed: %s",
464 size
, start_addr
, phys_offset
, strerror(saved_errno
));
469 QLIST_REMOVE(physmap
, list
);
470 if (state
->log_for_dirtybit
== physmap
) {
471 state
->log_for_dirtybit
= NULL
;
472 g_free(state
->dirty_bitmap
);
473 state
->dirty_bitmap
= NULL
;
480 static void xen_set_memory(struct MemoryListener
*listener
,
481 MemoryRegionSection
*section
,
484 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
485 hwaddr start_addr
= section
->offset_within_address_space
;
486 ram_addr_t size
= int128_get64(section
->size
);
487 bool log_dirty
= memory_region_is_logging(section
->mr
, DIRTY_MEMORY_VGA
);
488 hvmmem_type_t mem_type
;
490 if (section
->mr
== &ram_memory
) {
494 xen_map_memory_section(xen_domid
, state
->ioservid
,
497 xen_unmap_memory_section(xen_domid
, state
->ioservid
,
502 if (!memory_region_is_ram(section
->mr
)) {
506 if (log_dirty
!= add
) {
510 trace_xen_client_set_memory(start_addr
, size
, log_dirty
);
512 start_addr
&= TARGET_PAGE_MASK
;
513 size
= TARGET_PAGE_ALIGN(size
);
516 if (!memory_region_is_rom(section
->mr
)) {
517 xen_add_to_physmap(state
, start_addr
, size
,
518 section
->mr
, section
->offset_within_region
);
520 mem_type
= HVMMEM_ram_ro
;
521 if (xen_set_mem_type(xen_domid
, mem_type
,
522 start_addr
>> TARGET_PAGE_BITS
,
523 size
>> TARGET_PAGE_BITS
)) {
524 DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx
"\n",
529 if (xen_remove_from_physmap(state
, start_addr
, size
) < 0) {
530 DPRINTF("physmapping does not exist at "TARGET_FMT_plx
"\n", start_addr
);
535 static void xen_region_add(MemoryListener
*listener
,
536 MemoryRegionSection
*section
)
538 memory_region_ref(section
->mr
);
539 xen_set_memory(listener
, section
, true);
542 static void xen_region_del(MemoryListener
*listener
,
543 MemoryRegionSection
*section
)
545 xen_set_memory(listener
, section
, false);
546 memory_region_unref(section
->mr
);
549 static void xen_io_add(MemoryListener
*listener
,
550 MemoryRegionSection
*section
)
552 XenIOState
*state
= container_of(listener
, XenIOState
, io_listener
);
553 MemoryRegion
*mr
= section
->mr
;
555 if (mr
->ops
== &unassigned_io_ops
) {
559 memory_region_ref(mr
);
561 xen_map_io_section(xen_domid
, state
->ioservid
, section
);
564 static void xen_io_del(MemoryListener
*listener
,
565 MemoryRegionSection
*section
)
567 XenIOState
*state
= container_of(listener
, XenIOState
, io_listener
);
568 MemoryRegion
*mr
= section
->mr
;
570 if (mr
->ops
== &unassigned_io_ops
) {
574 xen_unmap_io_section(xen_domid
, state
->ioservid
, section
);
576 memory_region_unref(mr
);
579 static void xen_device_realize(DeviceListener
*listener
,
582 XenIOState
*state
= container_of(listener
, XenIOState
, device_listener
);
584 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
585 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
586 XenPciDevice
*xendev
= g_new(XenPciDevice
, 1);
588 xendev
->pci_dev
= pci_dev
;
589 xendev
->sbdf
= PCI_BUILD_BDF(pci_dev_bus_num(pci_dev
),
591 QLIST_INSERT_HEAD(&state
->dev_list
, xendev
, entry
);
593 xen_map_pcidev(xen_domid
, state
->ioservid
, pci_dev
);
597 static void xen_device_unrealize(DeviceListener
*listener
,
600 XenIOState
*state
= container_of(listener
, XenIOState
, device_listener
);
602 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
603 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
604 XenPciDevice
*xendev
, *next
;
606 xen_unmap_pcidev(xen_domid
, state
->ioservid
, pci_dev
);
608 QLIST_FOREACH_SAFE(xendev
, &state
->dev_list
, entry
, next
) {
609 if (xendev
->pci_dev
== pci_dev
) {
610 QLIST_REMOVE(xendev
, entry
);
618 static void xen_sync_dirty_bitmap(XenIOState
*state
,
622 hwaddr npages
= size
>> TARGET_PAGE_BITS
;
623 const int width
= sizeof(unsigned long) * 8;
624 size_t bitmap_size
= DIV_ROUND_UP(npages
, width
);
626 const XenPhysmap
*physmap
= NULL
;
628 physmap
= get_physmapping(start_addr
, size
);
629 if (physmap
== NULL
) {
634 if (state
->log_for_dirtybit
== NULL
) {
635 state
->log_for_dirtybit
= physmap
;
636 state
->dirty_bitmap
= g_new(unsigned long, bitmap_size
);
637 } else if (state
->log_for_dirtybit
!= physmap
) {
638 /* Only one range for dirty bitmap can be tracked. */
642 rc
= xen_track_dirty_vram(xen_domid
, start_addr
>> TARGET_PAGE_BITS
,
643 npages
, state
->dirty_bitmap
);
646 #define ENODATA ENOENT
648 if (errno
== ENODATA
) {
649 memory_region_set_dirty(framebuffer
, 0, size
);
650 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
651 ", 0x" TARGET_FMT_plx
"): %s\n",
652 start_addr
, start_addr
+ size
, strerror(errno
));
657 for (i
= 0; i
< bitmap_size
; i
++) {
658 unsigned long map
= state
->dirty_bitmap
[i
];
662 memory_region_set_dirty(framebuffer
,
663 (i
* width
+ j
) * TARGET_PAGE_SIZE
,
669 static void xen_log_start(MemoryListener
*listener
,
670 MemoryRegionSection
*section
,
673 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
675 if (new & ~old
& (1 << DIRTY_MEMORY_VGA
)) {
676 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
677 int128_get64(section
->size
));
681 static void xen_log_stop(MemoryListener
*listener
, MemoryRegionSection
*section
,
684 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
686 if (old
& ~new & (1 << DIRTY_MEMORY_VGA
)) {
687 state
->log_for_dirtybit
= NULL
;
688 g_free(state
->dirty_bitmap
);
689 state
->dirty_bitmap
= NULL
;
690 /* Disable dirty bit tracking */
691 xen_track_dirty_vram(xen_domid
, 0, 0, NULL
);
695 static void xen_log_sync(MemoryListener
*listener
, MemoryRegionSection
*section
)
697 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
699 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
700 int128_get64(section
->size
));
703 static void xen_log_global_start(MemoryListener
*listener
)
706 xen_in_migration
= true;
710 static void xen_log_global_stop(MemoryListener
*listener
)
712 xen_in_migration
= false;
715 static MemoryListener xen_memory_listener
= {
716 .region_add
= xen_region_add
,
717 .region_del
= xen_region_del
,
718 .log_start
= xen_log_start
,
719 .log_stop
= xen_log_stop
,
720 .log_sync
= xen_log_sync
,
721 .log_global_start
= xen_log_global_start
,
722 .log_global_stop
= xen_log_global_stop
,
726 static MemoryListener xen_io_listener
= {
727 .region_add
= xen_io_add
,
728 .region_del
= xen_io_del
,
732 static DeviceListener xen_device_listener
= {
733 .realize
= xen_device_realize
,
734 .unrealize
= xen_device_unrealize
,
737 /* get the ioreq packets from share mem */
738 static ioreq_t
*cpu_get_ioreq_from_shared_memory(XenIOState
*state
, int vcpu
)
740 ioreq_t
*req
= xen_vcpu_ioreq(state
->shared_page
, vcpu
);
742 if (req
->state
!= STATE_IOREQ_READY
) {
743 DPRINTF("I/O request not ready: "
744 "%x, ptr: %x, port: %"PRIx64
", "
745 "data: %"PRIx64
", count: %u, size: %u\n",
746 req
->state
, req
->data_is_ptr
, req
->addr
,
747 req
->data
, req
->count
, req
->size
);
751 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
753 req
->state
= STATE_IOREQ_INPROCESS
;
757 /* use poll to get the port notification */
758 /* ioreq_vec--out,the */
759 /* retval--the number of ioreq packet */
760 static ioreq_t
*cpu_get_ioreq(XenIOState
*state
)
762 MachineState
*ms
= MACHINE(qdev_get_machine());
763 unsigned int max_cpus
= ms
->smp
.max_cpus
;
767 port
= xenevtchn_pending(state
->xce_handle
);
768 if (port
== state
->bufioreq_local_port
) {
769 timer_mod(state
->buffered_io_timer
,
770 BUFFER_IO_MAX_DELAY
+ qemu_clock_get_ms(QEMU_CLOCK_REALTIME
));
775 for (i
= 0; i
< max_cpus
; i
++) {
776 if (state
->ioreq_local_port
[i
] == port
) {
782 hw_error("Fatal error while trying to get io event!\n");
785 /* unmask the wanted port again */
786 xenevtchn_unmask(state
->xce_handle
, port
);
788 /* get the io packet from shared memory */
789 state
->send_vcpu
= i
;
790 return cpu_get_ioreq_from_shared_memory(state
, i
);
793 /* read error or read nothing */
797 static uint32_t do_inp(uint32_t addr
, unsigned long size
)
801 return cpu_inb(addr
);
803 return cpu_inw(addr
);
805 return cpu_inl(addr
);
807 hw_error("inp: bad size: %04x %lx", addr
, size
);
811 static void do_outp(uint32_t addr
,
812 unsigned long size
, uint32_t val
)
816 return cpu_outb(addr
, val
);
818 return cpu_outw(addr
, val
);
820 return cpu_outl(addr
, val
);
822 hw_error("outp: bad size: %04x %lx", addr
, size
);
827 * Helper functions which read/write an object from/to physical guest
828 * memory, as part of the implementation of an ioreq.
831 * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
832 * val, req->size, 0/1)
833 * except without the integer overflow problems.
835 static void rw_phys_req_item(hwaddr addr
,
836 ioreq_t
*req
, uint32_t i
, void *val
, int rw
)
838 /* Do everything unsigned so overflow just results in a truncated result
839 * and accesses to undesired parts of guest memory, which is up
841 hwaddr offset
= (hwaddr
)req
->size
* i
;
847 cpu_physical_memory_rw(addr
, val
, req
->size
, rw
);
850 static inline void read_phys_req_item(hwaddr addr
,
851 ioreq_t
*req
, uint32_t i
, void *val
)
853 rw_phys_req_item(addr
, req
, i
, val
, 0);
855 static inline void write_phys_req_item(hwaddr addr
,
856 ioreq_t
*req
, uint32_t i
, void *val
)
858 rw_phys_req_item(addr
, req
, i
, val
, 1);
862 static void cpu_ioreq_pio(ioreq_t
*req
)
866 trace_cpu_ioreq_pio(req
, req
->dir
, req
->df
, req
->data_is_ptr
, req
->addr
,
867 req
->data
, req
->count
, req
->size
);
869 if (req
->size
> sizeof(uint32_t)) {
870 hw_error("PIO: bad size (%u)", req
->size
);
873 if (req
->dir
== IOREQ_READ
) {
874 if (!req
->data_is_ptr
) {
875 req
->data
= do_inp(req
->addr
, req
->size
);
876 trace_cpu_ioreq_pio_read_reg(req
, req
->data
, req
->addr
,
881 for (i
= 0; i
< req
->count
; i
++) {
882 tmp
= do_inp(req
->addr
, req
->size
);
883 write_phys_req_item(req
->data
, req
, i
, &tmp
);
886 } else if (req
->dir
== IOREQ_WRITE
) {
887 if (!req
->data_is_ptr
) {
888 trace_cpu_ioreq_pio_write_reg(req
, req
->data
, req
->addr
,
890 do_outp(req
->addr
, req
->size
, req
->data
);
892 for (i
= 0; i
< req
->count
; i
++) {
895 read_phys_req_item(req
->data
, req
, i
, &tmp
);
896 do_outp(req
->addr
, req
->size
, tmp
);
902 static void cpu_ioreq_move(ioreq_t
*req
)
906 trace_cpu_ioreq_move(req
, req
->dir
, req
->df
, req
->data_is_ptr
, req
->addr
,
907 req
->data
, req
->count
, req
->size
);
909 if (req
->size
> sizeof(req
->data
)) {
910 hw_error("MMIO: bad size (%u)", req
->size
);
913 if (!req
->data_is_ptr
) {
914 if (req
->dir
== IOREQ_READ
) {
915 for (i
= 0; i
< req
->count
; i
++) {
916 read_phys_req_item(req
->addr
, req
, i
, &req
->data
);
918 } else if (req
->dir
== IOREQ_WRITE
) {
919 for (i
= 0; i
< req
->count
; i
++) {
920 write_phys_req_item(req
->addr
, req
, i
, &req
->data
);
926 if (req
->dir
== IOREQ_READ
) {
927 for (i
= 0; i
< req
->count
; i
++) {
928 read_phys_req_item(req
->addr
, req
, i
, &tmp
);
929 write_phys_req_item(req
->data
, req
, i
, &tmp
);
931 } else if (req
->dir
== IOREQ_WRITE
) {
932 for (i
= 0; i
< req
->count
; i
++) {
933 read_phys_req_item(req
->data
, req
, i
, &tmp
);
934 write_phys_req_item(req
->addr
, req
, i
, &tmp
);
940 static void cpu_ioreq_config(XenIOState
*state
, ioreq_t
*req
)
942 uint32_t sbdf
= req
->addr
>> 32;
943 uint32_t reg
= req
->addr
;
944 XenPciDevice
*xendev
;
946 if (req
->size
!= sizeof(uint8_t) && req
->size
!= sizeof(uint16_t) &&
947 req
->size
!= sizeof(uint32_t)) {
948 hw_error("PCI config access: bad size (%u)", req
->size
);
951 if (req
->count
!= 1) {
952 hw_error("PCI config access: bad count (%u)", req
->count
);
955 QLIST_FOREACH(xendev
, &state
->dev_list
, entry
) {
956 if (xendev
->sbdf
!= sbdf
) {
960 if (!req
->data_is_ptr
) {
961 if (req
->dir
== IOREQ_READ
) {
962 req
->data
= pci_host_config_read_common(
963 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
965 trace_cpu_ioreq_config_read(req
, xendev
->sbdf
, reg
,
966 req
->size
, req
->data
);
967 } else if (req
->dir
== IOREQ_WRITE
) {
968 trace_cpu_ioreq_config_write(req
, xendev
->sbdf
, reg
,
969 req
->size
, req
->data
);
970 pci_host_config_write_common(
971 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
972 req
->data
, req
->size
);
977 if (req
->dir
== IOREQ_READ
) {
978 tmp
= pci_host_config_read_common(
979 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
981 trace_cpu_ioreq_config_read(req
, xendev
->sbdf
, reg
,
983 write_phys_req_item(req
->data
, req
, 0, &tmp
);
984 } else if (req
->dir
== IOREQ_WRITE
) {
985 read_phys_req_item(req
->data
, req
, 0, &tmp
);
986 trace_cpu_ioreq_config_write(req
, xendev
->sbdf
, reg
,
988 pci_host_config_write_common(
989 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
996 static void regs_to_cpu(vmware_regs_t
*vmport_regs
, ioreq_t
*req
)
1001 cpu
= X86_CPU(current_cpu
);
1003 env
->regs
[R_EAX
] = req
->data
;
1004 env
->regs
[R_EBX
] = vmport_regs
->ebx
;
1005 env
->regs
[R_ECX
] = vmport_regs
->ecx
;
1006 env
->regs
[R_EDX
] = vmport_regs
->edx
;
1007 env
->regs
[R_ESI
] = vmport_regs
->esi
;
1008 env
->regs
[R_EDI
] = vmport_regs
->edi
;
1011 static void regs_from_cpu(vmware_regs_t
*vmport_regs
)
1013 X86CPU
*cpu
= X86_CPU(current_cpu
);
1014 CPUX86State
*env
= &cpu
->env
;
1016 vmport_regs
->ebx
= env
->regs
[R_EBX
];
1017 vmport_regs
->ecx
= env
->regs
[R_ECX
];
1018 vmport_regs
->edx
= env
->regs
[R_EDX
];
1019 vmport_regs
->esi
= env
->regs
[R_ESI
];
1020 vmport_regs
->edi
= env
->regs
[R_EDI
];
1023 static void handle_vmport_ioreq(XenIOState
*state
, ioreq_t
*req
)
1025 vmware_regs_t
*vmport_regs
;
1027 assert(state
->shared_vmport_page
);
1029 &state
->shared_vmport_page
->vcpu_vmport_regs
[state
->send_vcpu
];
1030 QEMU_BUILD_BUG_ON(sizeof(*req
) < sizeof(*vmport_regs
));
1032 current_cpu
= state
->cpu_by_vcpu_id
[state
->send_vcpu
];
1033 regs_to_cpu(vmport_regs
, req
);
1035 regs_from_cpu(vmport_regs
);
1039 static void handle_ioreq(XenIOState
*state
, ioreq_t
*req
)
1041 trace_handle_ioreq(req
, req
->type
, req
->dir
, req
->df
, req
->data_is_ptr
,
1042 req
->addr
, req
->data
, req
->count
, req
->size
);
1044 if (!req
->data_is_ptr
&& (req
->dir
== IOREQ_WRITE
) &&
1045 (req
->size
< sizeof (target_ulong
))) {
1046 req
->data
&= ((target_ulong
) 1 << (8 * req
->size
)) - 1;
1049 if (req
->dir
== IOREQ_WRITE
)
1050 trace_handle_ioreq_write(req
, req
->type
, req
->df
, req
->data_is_ptr
,
1051 req
->addr
, req
->data
, req
->count
, req
->size
);
1053 switch (req
->type
) {
1054 case IOREQ_TYPE_PIO
:
1057 case IOREQ_TYPE_COPY
:
1058 cpu_ioreq_move(req
);
1060 case IOREQ_TYPE_VMWARE_PORT
:
1061 handle_vmport_ioreq(state
, req
);
1063 case IOREQ_TYPE_TIMEOFFSET
:
1065 case IOREQ_TYPE_INVALIDATE
:
1066 xen_invalidate_map_cache();
1068 case IOREQ_TYPE_PCI_CONFIG
:
1069 cpu_ioreq_config(state
, req
);
1072 hw_error("Invalid ioreq type 0x%x\n", req
->type
);
1074 if (req
->dir
== IOREQ_READ
) {
1075 trace_handle_ioreq_read(req
, req
->type
, req
->df
, req
->data_is_ptr
,
1076 req
->addr
, req
->data
, req
->count
, req
->size
);
1080 static int handle_buffered_iopage(XenIOState
*state
)
1082 buffered_iopage_t
*buf_page
= state
->buffered_io_page
;
1083 buf_ioreq_t
*buf_req
= NULL
;
1091 memset(&req
, 0x00, sizeof(req
));
1092 req
.state
= STATE_IOREQ_READY
;
1094 req
.dir
= IOREQ_WRITE
;
1097 uint32_t rdptr
= buf_page
->read_pointer
, wrptr
;
1100 wrptr
= buf_page
->write_pointer
;
1102 if (rdptr
!= buf_page
->read_pointer
) {
1105 if (rdptr
== wrptr
) {
1108 buf_req
= &buf_page
->buf_ioreq
[rdptr
% IOREQ_BUFFER_SLOT_NUM
];
1109 req
.size
= 1U << buf_req
->size
;
1110 req
.addr
= buf_req
->addr
;
1111 req
.data
= buf_req
->data
;
1112 req
.type
= buf_req
->type
;
1114 qw
= (req
.size
== 8);
1116 if (rdptr
+ 1 == wrptr
) {
1117 hw_error("Incomplete quad word buffered ioreq");
1119 buf_req
= &buf_page
->buf_ioreq
[(rdptr
+ 1) %
1120 IOREQ_BUFFER_SLOT_NUM
];
1121 req
.data
|= ((uint64_t)buf_req
->data
) << 32;
1125 handle_ioreq(state
, &req
);
1127 /* Only req.data may get updated by handle_ioreq(), albeit even that
1128 * should not happen as such data would never make it to the guest (we
1129 * can only usefully see writes here after all).
1131 assert(req
.state
== STATE_IOREQ_READY
);
1132 assert(req
.count
== 1);
1133 assert(req
.dir
== IOREQ_WRITE
);
1134 assert(!req
.data_is_ptr
);
1136 atomic_add(&buf_page
->read_pointer
, qw
+ 1);
1142 static void handle_buffered_io(void *opaque
)
1144 XenIOState
*state
= opaque
;
1146 if (handle_buffered_iopage(state
)) {
1147 timer_mod(state
->buffered_io_timer
,
1148 BUFFER_IO_MAX_DELAY
+ qemu_clock_get_ms(QEMU_CLOCK_REALTIME
));
1150 timer_del(state
->buffered_io_timer
);
1151 xenevtchn_unmask(state
->xce_handle
, state
->bufioreq_local_port
);
1155 static void cpu_handle_ioreq(void *opaque
)
1157 XenIOState
*state
= opaque
;
1158 ioreq_t
*req
= cpu_get_ioreq(state
);
1160 handle_buffered_iopage(state
);
1162 ioreq_t copy
= *req
;
1165 handle_ioreq(state
, ©
);
1166 req
->data
= copy
.data
;
1168 if (req
->state
!= STATE_IOREQ_INPROCESS
) {
1169 fprintf(stderr
, "Badness in I/O request ... not in service?!: "
1170 "%x, ptr: %x, port: %"PRIx64
", "
1171 "data: %"PRIx64
", count: %u, size: %u, type: %u\n",
1172 req
->state
, req
->data_is_ptr
, req
->addr
,
1173 req
->data
, req
->count
, req
->size
, req
->type
);
1174 destroy_hvm_domain(false);
1178 xen_wmb(); /* Update ioreq contents /then/ update state. */
1181 * We do this before we send the response so that the tools
1182 * have the opportunity to pick up on the reset before the
1183 * guest resumes and does a hlt with interrupts disabled which
1184 * causes Xen to powerdown the domain.
1186 if (runstate_is_running()) {
1187 ShutdownCause request
;
1189 if (qemu_shutdown_requested_get()) {
1190 destroy_hvm_domain(false);
1192 request
= qemu_reset_requested_get();
1194 qemu_system_reset(request
);
1195 destroy_hvm_domain(true);
1199 req
->state
= STATE_IORESP_READY
;
1200 xenevtchn_notify(state
->xce_handle
,
1201 state
->ioreq_local_port
[state
->send_vcpu
]);
1205 static void xen_main_loop_prepare(XenIOState
*state
)
1209 if (state
->xce_handle
!= NULL
) {
1210 evtchn_fd
= xenevtchn_fd(state
->xce_handle
);
1213 state
->buffered_io_timer
= timer_new_ms(QEMU_CLOCK_REALTIME
, handle_buffered_io
,
1216 if (evtchn_fd
!= -1) {
1217 CPUState
*cpu_state
;
1219 DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__
);
1220 CPU_FOREACH(cpu_state
) {
1221 DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
1222 __func__
, cpu_state
->cpu_index
, cpu_state
);
1223 state
->cpu_by_vcpu_id
[cpu_state
->cpu_index
] = cpu_state
;
1225 qemu_set_fd_handler(evtchn_fd
, cpu_handle_ioreq
, NULL
, state
);
1230 static void xen_hvm_change_state_handler(void *opaque
, int running
,
1233 XenIOState
*state
= opaque
;
1236 xen_main_loop_prepare(state
);
1239 xen_set_ioreq_server_state(xen_domid
,
1241 (rstate
== RUN_STATE_RUNNING
));
1244 static void xen_exit_notifier(Notifier
*n
, void *data
)
1246 XenIOState
*state
= container_of(n
, XenIOState
, exit
);
1248 xenevtchn_close(state
->xce_handle
);
1249 xs_daemon_close(state
->xenstore
);
1252 #ifdef XEN_COMPAT_PHYSMAP
1253 static void xen_read_physmap(XenIOState
*state
)
1255 XenPhysmap
*physmap
= NULL
;
1256 unsigned int len
, num
, i
;
1257 char path
[80], *value
= NULL
;
1258 char **entries
= NULL
;
1260 snprintf(path
, sizeof(path
),
1261 "/local/domain/0/device-model/%d/physmap", xen_domid
);
1262 entries
= xs_directory(state
->xenstore
, 0, path
, &num
);
1263 if (entries
== NULL
)
1266 for (i
= 0; i
< num
; i
++) {
1267 physmap
= g_malloc(sizeof (XenPhysmap
));
1268 physmap
->phys_offset
= strtoull(entries
[i
], NULL
, 16);
1269 snprintf(path
, sizeof(path
),
1270 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1271 xen_domid
, entries
[i
]);
1272 value
= xs_read(state
->xenstore
, 0, path
, &len
);
1273 if (value
== NULL
) {
1277 physmap
->start_addr
= strtoull(value
, NULL
, 16);
1280 snprintf(path
, sizeof(path
),
1281 "/local/domain/0/device-model/%d/physmap/%s/size",
1282 xen_domid
, entries
[i
]);
1283 value
= xs_read(state
->xenstore
, 0, path
, &len
);
1284 if (value
== NULL
) {
1288 physmap
->size
= strtoull(value
, NULL
, 16);
1291 snprintf(path
, sizeof(path
),
1292 "/local/domain/0/device-model/%d/physmap/%s/name",
1293 xen_domid
, entries
[i
]);
1294 physmap
->name
= xs_read(state
->xenstore
, 0, path
, &len
);
1296 QLIST_INSERT_HEAD(&xen_physmap
, physmap
, list
);
1301 static void xen_read_physmap(XenIOState
*state
)
1306 static void xen_wakeup_notifier(Notifier
*notifier
, void *data
)
1308 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 0);
1311 static int xen_map_ioreq_server(XenIOState
*state
)
1314 xenforeignmemory_resource_handle
*fres
;
1315 xen_pfn_t ioreq_pfn
;
1316 xen_pfn_t bufioreq_pfn
;
1317 evtchn_port_t bufioreq_evtchn
;
1321 * Attempt to map using the resource API and fall back to normal
1322 * foreign mapping if this is not supported.
1324 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq
!= 0);
1325 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
1326 fres
= xenforeignmemory_map_resource(xen_fmem
, xen_domid
,
1327 XENMEM_resource_ioreq_server
,
1328 state
->ioservid
, 0, 2,
1330 PROT_READ
| PROT_WRITE
, 0);
1332 trace_xen_map_resource_ioreq(state
->ioservid
, addr
);
1333 state
->buffered_io_page
= addr
;
1334 state
->shared_page
= addr
+ TARGET_PAGE_SIZE
;
1335 } else if (errno
!= EOPNOTSUPP
) {
1336 error_report("failed to map ioreq server resources: error %d handle=%p",
1341 rc
= xen_get_ioreq_server_info(xen_domid
, state
->ioservid
,
1342 (state
->shared_page
== NULL
) ?
1344 (state
->buffered_io_page
== NULL
) ?
1345 &bufioreq_pfn
: NULL
,
1348 error_report("failed to get ioreq server info: error %d handle=%p",
1353 if (state
->shared_page
== NULL
) {
1354 DPRINTF("shared page at pfn %lx\n", ioreq_pfn
);
1356 state
->shared_page
= xenforeignmemory_map(xen_fmem
, xen_domid
,
1357 PROT_READ
| PROT_WRITE
,
1358 1, &ioreq_pfn
, NULL
);
1359 if (state
->shared_page
== NULL
) {
1360 error_report("map shared IO page returned error %d handle=%p",
1365 if (state
->buffered_io_page
== NULL
) {
1366 DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn
);
1368 state
->buffered_io_page
= xenforeignmemory_map(xen_fmem
, xen_domid
,
1369 PROT_READ
| PROT_WRITE
,
1372 if (state
->buffered_io_page
== NULL
) {
1373 error_report("map buffered IO page returned error %d", errno
);
1378 if (state
->shared_page
== NULL
|| state
->buffered_io_page
== NULL
) {
1382 DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn
);
1384 state
->bufioreq_remote_port
= bufioreq_evtchn
;
1389 void xen_hvm_init(PCMachineState
*pcms
, MemoryRegion
**ram_memory
)
1391 MachineState
*ms
= MACHINE(pcms
);
1392 unsigned int max_cpus
= ms
->smp
.max_cpus
;
1394 xen_pfn_t ioreq_pfn
;
1397 state
= g_malloc0(sizeof (XenIOState
));
1399 state
->xce_handle
= xenevtchn_open(NULL
, 0);
1400 if (state
->xce_handle
== NULL
) {
1401 perror("xen: event channel open");
1405 state
->xenstore
= xs_daemon_open();
1406 if (state
->xenstore
== NULL
) {
1407 perror("xen: xenstore open");
1411 xen_create_ioreq_server(xen_domid
, &state
->ioservid
);
1413 state
->exit
.notify
= xen_exit_notifier
;
1414 qemu_add_exit_notifier(&state
->exit
);
1416 state
->suspend
.notify
= xen_suspend_notifier
;
1417 qemu_register_suspend_notifier(&state
->suspend
);
1419 state
->wakeup
.notify
= xen_wakeup_notifier
;
1420 qemu_register_wakeup_notifier(&state
->wakeup
);
1423 * Register wake-up support in QMP query-current-machine API
1425 qemu_register_wakeup_support();
1427 rc
= xen_map_ioreq_server(state
);
1432 rc
= xen_get_vmport_regs_pfn(xen_xc
, xen_domid
, &ioreq_pfn
);
1434 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn
);
1435 state
->shared_vmport_page
=
1436 xenforeignmemory_map(xen_fmem
, xen_domid
, PROT_READ
|PROT_WRITE
,
1437 1, &ioreq_pfn
, NULL
);
1438 if (state
->shared_vmport_page
== NULL
) {
1439 error_report("map shared vmport IO page returned error %d handle=%p",
1443 } else if (rc
!= -ENOSYS
) {
1444 error_report("get vmport regs pfn returned error %d, rc=%d",
1449 /* Note: cpus is empty at this point in init */
1450 state
->cpu_by_vcpu_id
= g_malloc0(max_cpus
* sizeof(CPUState
*));
1452 rc
= xen_set_ioreq_server_state(xen_domid
, state
->ioservid
, true);
1454 error_report("failed to enable ioreq server info: error %d handle=%p",
1459 state
->ioreq_local_port
= g_malloc0(max_cpus
* sizeof (evtchn_port_t
));
1461 /* FIXME: how about if we overflow the page here? */
1462 for (i
= 0; i
< max_cpus
; i
++) {
1463 rc
= xenevtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
1464 xen_vcpu_eport(state
->shared_page
, i
));
1466 error_report("shared evtchn %d bind error %d", i
, errno
);
1469 state
->ioreq_local_port
[i
] = rc
;
1472 rc
= xenevtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
1473 state
->bufioreq_remote_port
);
1475 error_report("buffered evtchn bind error %d", errno
);
1478 state
->bufioreq_local_port
= rc
;
1480 /* Init RAM management */
1481 #ifdef XEN_COMPAT_PHYSMAP
1482 xen_map_cache_init(xen_phys_offset_to_gaddr
, state
);
1484 xen_map_cache_init(NULL
, state
);
1486 xen_ram_init(pcms
, ram_size
, ram_memory
);
1488 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler
, state
);
1490 state
->memory_listener
= xen_memory_listener
;
1491 memory_listener_register(&state
->memory_listener
, &address_space_memory
);
1492 state
->log_for_dirtybit
= NULL
;
1494 state
->io_listener
= xen_io_listener
;
1495 memory_listener_register(&state
->io_listener
, &address_space_io
);
1497 state
->device_listener
= xen_device_listener
;
1498 QLIST_INIT(&state
->dev_list
);
1499 device_listener_register(&state
->device_listener
);
1503 /* Initialize backend core & drivers */
1504 if (xen_be_init() != 0) {
1505 error_report("xen backend core setup failed");
1508 xen_be_register_common();
1510 QLIST_INIT(&xen_physmap
);
1511 xen_read_physmap(state
);
1513 /* Disable ACPI build because Xen handles it */
1514 pcms
->acpi_build_enabled
= false;
1519 error_report("xen hardware virtual machine initialisation failed");
1523 void destroy_hvm_domain(bool reboot
)
1525 xc_interface
*xc_handle
;
1529 unsigned int reason
= reboot
? SHUTDOWN_reboot
: SHUTDOWN_poweroff
;
1532 rc
= xendevicemodel_shutdown(xen_dmod
, xen_domid
, reason
);
1536 if (errno
!= ENOTTY
/* old Xen */) {
1537 perror("xendevicemodel_shutdown failed");
1539 /* well, try the old thing then */
1542 xc_handle
= xc_interface_open(0, 0, 0);
1543 if (xc_handle
== NULL
) {
1544 fprintf(stderr
, "Cannot acquire xenctrl handle\n");
1546 sts
= xc_domain_shutdown(xc_handle
, xen_domid
, reason
);
1548 fprintf(stderr
, "xc_domain_shutdown failed to issue %s, "
1549 "sts %d, %s\n", reboot
? "reboot" : "poweroff",
1550 sts
, strerror(errno
));
1552 fprintf(stderr
, "Issued domain %d %s\n", xen_domid
,
1553 reboot
? "reboot" : "poweroff");
1555 xc_interface_close(xc_handle
);
1559 void xen_register_framebuffer(MemoryRegion
*mr
)
1564 void xen_shutdown_fatal_error(const char *fmt
, ...)
1569 vfprintf(stderr
, fmt
, ap
);
1571 fprintf(stderr
, "Will destroy the domain.\n");
1572 /* destroy the domain */
1573 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR
);
1576 void xen_hvm_modified_memory(ram_addr_t start
, ram_addr_t length
)
1578 if (unlikely(xen_in_migration
)) {
1580 ram_addr_t start_pfn
, nb_pages
;
1582 start
= xen_phys_offset_to_gaddr(start
, length
);
1585 length
= TARGET_PAGE_SIZE
;
1587 start_pfn
= start
>> TARGET_PAGE_BITS
;
1588 nb_pages
= ((start
+ length
+ TARGET_PAGE_SIZE
- 1) >> TARGET_PAGE_BITS
)
1590 rc
= xen_modified_memory(xen_domid
, start_pfn
, nb_pages
);
1593 "%s failed for "RAM_ADDR_FMT
" ("RAM_ADDR_FMT
"): %i, %s\n",
1594 __func__
, start
, nb_pages
, errno
, strerror(errno
));
1599 void qmp_xen_set_global_dirty_log(bool enable
, Error
**errp
)
1602 memory_global_dirty_log_start();
1604 memory_global_dirty_log_stop();