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/range.h"
27 #include "sysemu/xen-mapcache.h"
29 #include "exec/address-spaces.h"
31 #include <xen/hvm/ioreq.h>
32 #include <xen/hvm/e820.h>
34 //#define DEBUG_XEN_HVM
37 #define DPRINTF(fmt, ...) \
38 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
40 #define DPRINTF(fmt, ...) \
44 static MemoryRegion ram_memory
, ram_640k
, ram_lo
, ram_hi
;
45 static MemoryRegion
*framebuffer
;
46 static bool xen_in_migration
;
48 /* Compatibility with older version */
50 /* This allows QEMU to build on a system that has Xen 4.5 or earlier
51 * installed. This here (not in hw/xen/xen_common.h) because xen/hvm/ioreq.h
52 * needs to be included before this block and hw/xen/xen_common.h needs to
53 * be included before xen/hvm/ioreq.h
55 #ifndef IOREQ_TYPE_VMWARE_PORT
56 #define IOREQ_TYPE_VMWARE_PORT 3
64 typedef struct vmware_regs vmware_regs_t
;
66 struct shared_vmport_iopage
{
67 struct vmware_regs vcpu_vmport_regs
[1];
69 typedef struct shared_vmport_iopage shared_vmport_iopage_t
;
72 static inline uint32_t xen_vcpu_eport(shared_iopage_t
*shared_page
, int i
)
74 return shared_page
->vcpu_ioreq
[i
].vp_eport
;
76 static inline ioreq_t
*xen_vcpu_ioreq(shared_iopage_t
*shared_page
, int vcpu
)
78 return &shared_page
->vcpu_ioreq
[vcpu
];
81 #define BUFFER_IO_MAX_DELAY 100
83 typedef struct XenPhysmap
{
89 QLIST_ENTRY(XenPhysmap
) list
;
92 static QLIST_HEAD(, XenPhysmap
) xen_physmap
;
94 typedef struct XenPciDevice
{
97 QLIST_ENTRY(XenPciDevice
) entry
;
100 typedef struct XenIOState
{
102 shared_iopage_t
*shared_page
;
103 shared_vmport_iopage_t
*shared_vmport_page
;
104 buffered_iopage_t
*buffered_io_page
;
105 QEMUTimer
*buffered_io_timer
;
106 CPUState
**cpu_by_vcpu_id
;
107 /* the evtchn port for polling the notification, */
108 evtchn_port_t
*ioreq_local_port
;
109 /* evtchn remote and local ports for buffered io */
110 evtchn_port_t bufioreq_remote_port
;
111 evtchn_port_t bufioreq_local_port
;
112 /* the evtchn fd for polling */
113 xenevtchn_handle
*xce_handle
;
114 /* which vcpu we are serving */
117 struct xs_handle
*xenstore
;
118 MemoryListener memory_listener
;
119 MemoryListener io_listener
;
120 QLIST_HEAD(, XenPciDevice
) dev_list
;
121 DeviceListener device_listener
;
122 hwaddr free_phys_offset
;
123 const XenPhysmap
*log_for_dirtybit
;
124 /* Buffer used by xen_sync_dirty_bitmap */
125 unsigned long *dirty_bitmap
;
132 /* Xen specific function for piix pci */
134 int xen_pci_slot_get_pirq(PCIDevice
*pci_dev
, int irq_num
)
136 return irq_num
+ ((pci_dev
->devfn
>> 3) << 2);
139 void xen_piix3_set_irq(void *opaque
, int irq_num
, int level
)
141 xen_set_pci_intx_level(xen_domid
, 0, 0, irq_num
>> 2,
145 void xen_piix_pci_write_config_client(uint32_t address
, uint32_t val
, int len
)
149 /* Scan for updates to PCI link routes (0x60-0x63). */
150 for (i
= 0; i
< len
; i
++) {
151 uint8_t v
= (val
>> (8 * i
)) & 0xff;
156 if (((address
+ i
) >= 0x60) && ((address
+ i
) <= 0x63)) {
157 xen_set_pci_link_route(xen_domid
, address
+ i
- 0x60, v
);
162 int xen_is_pirq_msi(uint32_t msi_data
)
164 /* If vector is 0, the msi is remapped into a pirq, passed as
167 return ((msi_data
& MSI_DATA_VECTOR_MASK
) >> MSI_DATA_VECTOR_SHIFT
) == 0;
170 void xen_hvm_inject_msi(uint64_t addr
, uint32_t data
)
172 xen_inject_msi(xen_domid
, addr
, data
);
175 static void xen_suspend_notifier(Notifier
*notifier
, void *data
)
177 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 3);
180 /* Xen Interrupt Controller */
182 static void xen_set_irq(void *opaque
, int irq
, int level
)
184 xen_set_isa_irq_level(xen_domid
, irq
, level
);
187 qemu_irq
*xen_interrupt_controller_init(void)
189 return qemu_allocate_irqs(xen_set_irq
, NULL
, 16);
194 static void xen_ram_init(PCMachineState
*pcms
,
195 ram_addr_t ram_size
, MemoryRegion
**ram_memory_p
)
197 MemoryRegion
*sysmem
= get_system_memory();
198 ram_addr_t block_len
;
199 uint64_t user_lowmem
= object_property_get_uint(qdev_get_machine(),
200 PC_MACHINE_MAX_RAM_BELOW_4G
,
203 /* Handle the machine opt max-ram-below-4g. It is basically doing
204 * min(xen limit, user limit).
207 user_lowmem
= HVM_BELOW_4G_RAM_END
; /* default */
209 if (HVM_BELOW_4G_RAM_END
<= user_lowmem
) {
210 user_lowmem
= HVM_BELOW_4G_RAM_END
;
213 if (ram_size
>= user_lowmem
) {
214 pcms
->above_4g_mem_size
= ram_size
- user_lowmem
;
215 pcms
->below_4g_mem_size
= user_lowmem
;
217 pcms
->above_4g_mem_size
= 0;
218 pcms
->below_4g_mem_size
= ram_size
;
220 if (!pcms
->above_4g_mem_size
) {
221 block_len
= ram_size
;
224 * Xen does not allocate the memory continuously, it keeps a
225 * hole of the size computed above or passed in.
227 block_len
= (1ULL << 32) + pcms
->above_4g_mem_size
;
229 memory_region_init_ram(&ram_memory
, NULL
, "xen.ram", block_len
,
231 *ram_memory_p
= &ram_memory
;
233 memory_region_init_alias(&ram_640k
, NULL
, "xen.ram.640k",
234 &ram_memory
, 0, 0xa0000);
235 memory_region_add_subregion(sysmem
, 0, &ram_640k
);
236 /* Skip of the VGA IO memory space, it will be registered later by the VGA
239 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
240 * the Options ROM, so it is registered here as RAM.
242 memory_region_init_alias(&ram_lo
, NULL
, "xen.ram.lo",
243 &ram_memory
, 0xc0000,
244 pcms
->below_4g_mem_size
- 0xc0000);
245 memory_region_add_subregion(sysmem
, 0xc0000, &ram_lo
);
246 if (pcms
->above_4g_mem_size
> 0) {
247 memory_region_init_alias(&ram_hi
, NULL
, "xen.ram.hi",
248 &ram_memory
, 0x100000000ULL
,
249 pcms
->above_4g_mem_size
);
250 memory_region_add_subregion(sysmem
, 0x100000000ULL
, &ram_hi
);
254 void xen_ram_alloc(ram_addr_t ram_addr
, ram_addr_t size
, MemoryRegion
*mr
,
257 unsigned long nr_pfn
;
261 if (runstate_check(RUN_STATE_INMIGRATE
)) {
262 /* RAM already populated in Xen */
263 fprintf(stderr
, "%s: do not alloc "RAM_ADDR_FMT
264 " bytes of ram at "RAM_ADDR_FMT
" when runstate is INMIGRATE\n",
265 __func__
, size
, ram_addr
);
269 if (mr
== &ram_memory
) {
273 trace_xen_ram_alloc(ram_addr
, size
);
275 nr_pfn
= size
>> TARGET_PAGE_BITS
;
276 pfn_list
= g_malloc(sizeof (*pfn_list
) * nr_pfn
);
278 for (i
= 0; i
< nr_pfn
; i
++) {
279 pfn_list
[i
] = (ram_addr
>> TARGET_PAGE_BITS
) + i
;
282 if (xc_domain_populate_physmap_exact(xen_xc
, xen_domid
, nr_pfn
, 0, 0, pfn_list
)) {
283 error_setg(errp
, "xen: failed to populate ram at " RAM_ADDR_FMT
,
290 static XenPhysmap
*get_physmapping(hwaddr start_addr
, ram_addr_t size
)
292 XenPhysmap
*physmap
= NULL
;
294 start_addr
&= TARGET_PAGE_MASK
;
296 QLIST_FOREACH(physmap
, &xen_physmap
, list
) {
297 if (range_covers_byte(physmap
->start_addr
, physmap
->size
, start_addr
)) {
304 static hwaddr
xen_phys_offset_to_gaddr(hwaddr phys_offset
, ram_addr_t size
)
306 hwaddr addr
= phys_offset
& TARGET_PAGE_MASK
;
307 XenPhysmap
*physmap
= NULL
;
309 QLIST_FOREACH(physmap
, &xen_physmap
, list
) {
310 if (range_covers_byte(physmap
->phys_offset
, physmap
->size
, addr
)) {
311 return physmap
->start_addr
+ (phys_offset
- physmap
->phys_offset
);
318 #ifdef XEN_COMPAT_PHYSMAP
319 static int xen_save_physmap(XenIOState
*state
, XenPhysmap
*physmap
)
321 char path
[80], value
[17];
323 snprintf(path
, sizeof(path
),
324 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/start_addr",
325 xen_domid
, (uint64_t)physmap
->phys_offset
);
326 snprintf(value
, sizeof(value
), "%"PRIx64
, (uint64_t)physmap
->start_addr
);
327 if (!xs_write(state
->xenstore
, 0, path
, value
, strlen(value
))) {
330 snprintf(path
, sizeof(path
),
331 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/size",
332 xen_domid
, (uint64_t)physmap
->phys_offset
);
333 snprintf(value
, sizeof(value
), "%"PRIx64
, (uint64_t)physmap
->size
);
334 if (!xs_write(state
->xenstore
, 0, path
, value
, strlen(value
))) {
338 snprintf(path
, sizeof(path
),
339 "/local/domain/0/device-model/%d/physmap/%"PRIx64
"/name",
340 xen_domid
, (uint64_t)physmap
->phys_offset
);
341 if (!xs_write(state
->xenstore
, 0, path
,
342 physmap
->name
, strlen(physmap
->name
))) {
349 static int xen_save_physmap(XenIOState
*state
, XenPhysmap
*physmap
)
355 static int xen_add_to_physmap(XenIOState
*state
,
359 hwaddr offset_within_region
)
361 unsigned long nr_pages
;
363 XenPhysmap
*physmap
= NULL
;
364 hwaddr pfn
, start_gpfn
;
365 hwaddr phys_offset
= memory_region_get_ram_addr(mr
);
368 if (get_physmapping(start_addr
, size
)) {
375 /* Xen can only handle a single dirty log region for now and we want
376 * the linear framebuffer to be that region.
377 * Avoid tracking any regions that is not videoram and avoid tracking
378 * the legacy vga region. */
379 if (mr
== framebuffer
&& start_addr
> 0xbffff) {
385 DPRINTF("mapping vram to %"HWADDR_PRIx
" - %"HWADDR_PRIx
"\n",
386 start_addr
, start_addr
+ size
);
388 mr_name
= memory_region_name(mr
);
390 physmap
= g_malloc(sizeof(XenPhysmap
));
392 physmap
->start_addr
= start_addr
;
393 physmap
->size
= size
;
394 physmap
->name
= mr_name
;
395 physmap
->phys_offset
= phys_offset
;
397 QLIST_INSERT_HEAD(&xen_physmap
, physmap
, list
);
399 if (runstate_check(RUN_STATE_INMIGRATE
)) {
400 /* Now when we have a physmap entry we can replace a dummy mapping with
401 * a real one of guest foreign memory. */
402 uint8_t *p
= xen_replace_cache_entry(phys_offset
, start_addr
, size
);
403 assert(p
&& p
== memory_region_get_ram_ptr(mr
));
408 pfn
= phys_offset
>> TARGET_PAGE_BITS
;
409 start_gpfn
= start_addr
>> TARGET_PAGE_BITS
;
410 nr_pages
= size
>> TARGET_PAGE_BITS
;
411 rc
= xendevicemodel_relocate_memory(xen_dmod
, xen_domid
, nr_pages
, pfn
,
414 int saved_errno
= errno
;
416 error_report("relocate_memory %lu pages from GFN %"HWADDR_PRIx
417 " to GFN %"HWADDR_PRIx
" failed: %s",
418 nr_pages
, pfn
, start_gpfn
, strerror(saved_errno
));
423 rc
= xendevicemodel_pin_memory_cacheattr(xen_dmod
, xen_domid
,
424 start_addr
>> TARGET_PAGE_BITS
,
425 (start_addr
+ size
- 1) >> TARGET_PAGE_BITS
,
426 XEN_DOMCTL_MEM_CACHEATTR_WB
);
428 error_report("pin_memory_cacheattr failed: %s", strerror(errno
));
430 return xen_save_physmap(state
, physmap
);
433 static int xen_remove_from_physmap(XenIOState
*state
,
438 XenPhysmap
*physmap
= NULL
;
439 hwaddr phys_offset
= 0;
441 physmap
= get_physmapping(start_addr
, size
);
442 if (physmap
== NULL
) {
446 phys_offset
= physmap
->phys_offset
;
447 size
= physmap
->size
;
449 DPRINTF("unmapping vram to %"HWADDR_PRIx
" - %"HWADDR_PRIx
", at "
450 "%"HWADDR_PRIx
"\n", start_addr
, start_addr
+ size
, phys_offset
);
452 size
>>= TARGET_PAGE_BITS
;
453 start_addr
>>= TARGET_PAGE_BITS
;
454 phys_offset
>>= TARGET_PAGE_BITS
;
455 rc
= xendevicemodel_relocate_memory(xen_dmod
, xen_domid
, size
, start_addr
,
458 int saved_errno
= errno
;
460 error_report("relocate_memory "RAM_ADDR_FMT
" pages"
461 " from GFN %"HWADDR_PRIx
462 " to GFN %"HWADDR_PRIx
" failed: %s",
463 size
, start_addr
, phys_offset
, strerror(saved_errno
));
468 QLIST_REMOVE(physmap
, list
);
469 if (state
->log_for_dirtybit
== physmap
) {
470 state
->log_for_dirtybit
= NULL
;
471 g_free(state
->dirty_bitmap
);
472 state
->dirty_bitmap
= NULL
;
479 static void xen_set_memory(struct MemoryListener
*listener
,
480 MemoryRegionSection
*section
,
483 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
484 hwaddr start_addr
= section
->offset_within_address_space
;
485 ram_addr_t size
= int128_get64(section
->size
);
486 bool log_dirty
= memory_region_is_logging(section
->mr
, DIRTY_MEMORY_VGA
);
487 hvmmem_type_t mem_type
;
489 if (section
->mr
== &ram_memory
) {
493 xen_map_memory_section(xen_domid
, state
->ioservid
,
496 xen_unmap_memory_section(xen_domid
, state
->ioservid
,
501 if (!memory_region_is_ram(section
->mr
)) {
505 if (log_dirty
!= add
) {
509 trace_xen_client_set_memory(start_addr
, size
, log_dirty
);
511 start_addr
&= TARGET_PAGE_MASK
;
512 size
= TARGET_PAGE_ALIGN(size
);
515 if (!memory_region_is_rom(section
->mr
)) {
516 xen_add_to_physmap(state
, start_addr
, size
,
517 section
->mr
, section
->offset_within_region
);
519 mem_type
= HVMMEM_ram_ro
;
520 if (xen_set_mem_type(xen_domid
, mem_type
,
521 start_addr
>> TARGET_PAGE_BITS
,
522 size
>> TARGET_PAGE_BITS
)) {
523 DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx
"\n",
528 if (xen_remove_from_physmap(state
, start_addr
, size
) < 0) {
529 DPRINTF("physmapping does not exist at "TARGET_FMT_plx
"\n", start_addr
);
534 static void xen_region_add(MemoryListener
*listener
,
535 MemoryRegionSection
*section
)
537 memory_region_ref(section
->mr
);
538 xen_set_memory(listener
, section
, true);
541 static void xen_region_del(MemoryListener
*listener
,
542 MemoryRegionSection
*section
)
544 xen_set_memory(listener
, section
, false);
545 memory_region_unref(section
->mr
);
548 static void xen_io_add(MemoryListener
*listener
,
549 MemoryRegionSection
*section
)
551 XenIOState
*state
= container_of(listener
, XenIOState
, io_listener
);
552 MemoryRegion
*mr
= section
->mr
;
554 if (mr
->ops
== &unassigned_io_ops
) {
558 memory_region_ref(mr
);
560 xen_map_io_section(xen_domid
, state
->ioservid
, section
);
563 static void xen_io_del(MemoryListener
*listener
,
564 MemoryRegionSection
*section
)
566 XenIOState
*state
= container_of(listener
, XenIOState
, io_listener
);
567 MemoryRegion
*mr
= section
->mr
;
569 if (mr
->ops
== &unassigned_io_ops
) {
573 xen_unmap_io_section(xen_domid
, state
->ioservid
, section
);
575 memory_region_unref(mr
);
578 static void xen_device_realize(DeviceListener
*listener
,
581 XenIOState
*state
= container_of(listener
, XenIOState
, device_listener
);
583 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
584 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
585 XenPciDevice
*xendev
= g_new(XenPciDevice
, 1);
587 xendev
->pci_dev
= pci_dev
;
588 xendev
->sbdf
= PCI_BUILD_BDF(pci_dev_bus_num(pci_dev
),
590 QLIST_INSERT_HEAD(&state
->dev_list
, xendev
, entry
);
592 xen_map_pcidev(xen_domid
, state
->ioservid
, pci_dev
);
596 static void xen_device_unrealize(DeviceListener
*listener
,
599 XenIOState
*state
= container_of(listener
, XenIOState
, device_listener
);
601 if (object_dynamic_cast(OBJECT(dev
), TYPE_PCI_DEVICE
)) {
602 PCIDevice
*pci_dev
= PCI_DEVICE(dev
);
603 XenPciDevice
*xendev
, *next
;
605 xen_unmap_pcidev(xen_domid
, state
->ioservid
, pci_dev
);
607 QLIST_FOREACH_SAFE(xendev
, &state
->dev_list
, entry
, next
) {
608 if (xendev
->pci_dev
== pci_dev
) {
609 QLIST_REMOVE(xendev
, entry
);
617 static void xen_sync_dirty_bitmap(XenIOState
*state
,
621 hwaddr npages
= size
>> TARGET_PAGE_BITS
;
622 const int width
= sizeof(unsigned long) * 8;
623 size_t bitmap_size
= DIV_ROUND_UP(npages
, width
);
625 const XenPhysmap
*physmap
= NULL
;
627 physmap
= get_physmapping(start_addr
, size
);
628 if (physmap
== NULL
) {
633 if (state
->log_for_dirtybit
== NULL
) {
634 state
->log_for_dirtybit
= physmap
;
635 state
->dirty_bitmap
= g_new(unsigned long, bitmap_size
);
636 } else if (state
->log_for_dirtybit
!= physmap
) {
637 /* Only one range for dirty bitmap can be tracked. */
641 rc
= xen_track_dirty_vram(xen_domid
, start_addr
>> TARGET_PAGE_BITS
,
642 npages
, state
->dirty_bitmap
);
645 #define ENODATA ENOENT
647 if (errno
== ENODATA
) {
648 memory_region_set_dirty(framebuffer
, 0, size
);
649 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
650 ", 0x" TARGET_FMT_plx
"): %s\n",
651 start_addr
, start_addr
+ size
, strerror(errno
));
656 for (i
= 0; i
< bitmap_size
; i
++) {
657 unsigned long map
= state
->dirty_bitmap
[i
];
661 memory_region_set_dirty(framebuffer
,
662 (i
* width
+ j
) * TARGET_PAGE_SIZE
,
668 static void xen_log_start(MemoryListener
*listener
,
669 MemoryRegionSection
*section
,
672 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
674 if (new & ~old
& (1 << DIRTY_MEMORY_VGA
)) {
675 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
676 int128_get64(section
->size
));
680 static void xen_log_stop(MemoryListener
*listener
, MemoryRegionSection
*section
,
683 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
685 if (old
& ~new & (1 << DIRTY_MEMORY_VGA
)) {
686 state
->log_for_dirtybit
= NULL
;
687 g_free(state
->dirty_bitmap
);
688 state
->dirty_bitmap
= NULL
;
689 /* Disable dirty bit tracking */
690 xen_track_dirty_vram(xen_domid
, 0, 0, NULL
);
694 static void xen_log_sync(MemoryListener
*listener
, MemoryRegionSection
*section
)
696 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
698 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
699 int128_get64(section
->size
));
702 static void xen_log_global_start(MemoryListener
*listener
)
705 xen_in_migration
= true;
709 static void xen_log_global_stop(MemoryListener
*listener
)
711 xen_in_migration
= false;
714 static MemoryListener xen_memory_listener
= {
715 .region_add
= xen_region_add
,
716 .region_del
= xen_region_del
,
717 .log_start
= xen_log_start
,
718 .log_stop
= xen_log_stop
,
719 .log_sync
= xen_log_sync
,
720 .log_global_start
= xen_log_global_start
,
721 .log_global_stop
= xen_log_global_stop
,
725 static MemoryListener xen_io_listener
= {
726 .region_add
= xen_io_add
,
727 .region_del
= xen_io_del
,
731 static DeviceListener xen_device_listener
= {
732 .realize
= xen_device_realize
,
733 .unrealize
= xen_device_unrealize
,
736 /* get the ioreq packets from share mem */
737 static ioreq_t
*cpu_get_ioreq_from_shared_memory(XenIOState
*state
, int vcpu
)
739 ioreq_t
*req
= xen_vcpu_ioreq(state
->shared_page
, vcpu
);
741 if (req
->state
!= STATE_IOREQ_READY
) {
742 DPRINTF("I/O request not ready: "
743 "%x, ptr: %x, port: %"PRIx64
", "
744 "data: %"PRIx64
", count: %u, size: %u\n",
745 req
->state
, req
->data_is_ptr
, req
->addr
,
746 req
->data
, req
->count
, req
->size
);
750 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
752 req
->state
= STATE_IOREQ_INPROCESS
;
756 /* use poll to get the port notification */
757 /* ioreq_vec--out,the */
758 /* retval--the number of ioreq packet */
759 static ioreq_t
*cpu_get_ioreq(XenIOState
*state
)
761 MachineState
*ms
= MACHINE(qdev_get_machine());
762 unsigned int max_cpus
= ms
->smp
.max_cpus
;
766 port
= xenevtchn_pending(state
->xce_handle
);
767 if (port
== state
->bufioreq_local_port
) {
768 timer_mod(state
->buffered_io_timer
,
769 BUFFER_IO_MAX_DELAY
+ qemu_clock_get_ms(QEMU_CLOCK_REALTIME
));
774 for (i
= 0; i
< max_cpus
; i
++) {
775 if (state
->ioreq_local_port
[i
] == port
) {
781 hw_error("Fatal error while trying to get io event!\n");
784 /* unmask the wanted port again */
785 xenevtchn_unmask(state
->xce_handle
, port
);
787 /* get the io packet from shared memory */
788 state
->send_vcpu
= i
;
789 return cpu_get_ioreq_from_shared_memory(state
, i
);
792 /* read error or read nothing */
796 static uint32_t do_inp(uint32_t addr
, unsigned long size
)
800 return cpu_inb(addr
);
802 return cpu_inw(addr
);
804 return cpu_inl(addr
);
806 hw_error("inp: bad size: %04x %lx", addr
, size
);
810 static void do_outp(uint32_t addr
,
811 unsigned long size
, uint32_t val
)
815 return cpu_outb(addr
, val
);
817 return cpu_outw(addr
, val
);
819 return cpu_outl(addr
, val
);
821 hw_error("outp: bad size: %04x %lx", addr
, size
);
826 * Helper functions which read/write an object from/to physical guest
827 * memory, as part of the implementation of an ioreq.
830 * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
831 * val, req->size, 0/1)
832 * except without the integer overflow problems.
834 static void rw_phys_req_item(hwaddr addr
,
835 ioreq_t
*req
, uint32_t i
, void *val
, int rw
)
837 /* Do everything unsigned so overflow just results in a truncated result
838 * and accesses to undesired parts of guest memory, which is up
840 hwaddr offset
= (hwaddr
)req
->size
* i
;
846 cpu_physical_memory_rw(addr
, val
, req
->size
, rw
);
849 static inline void read_phys_req_item(hwaddr addr
,
850 ioreq_t
*req
, uint32_t i
, void *val
)
852 rw_phys_req_item(addr
, req
, i
, val
, 0);
854 static inline void write_phys_req_item(hwaddr addr
,
855 ioreq_t
*req
, uint32_t i
, void *val
)
857 rw_phys_req_item(addr
, req
, i
, val
, 1);
861 static void cpu_ioreq_pio(ioreq_t
*req
)
865 trace_cpu_ioreq_pio(req
, req
->dir
, req
->df
, req
->data_is_ptr
, req
->addr
,
866 req
->data
, req
->count
, req
->size
);
868 if (req
->size
> sizeof(uint32_t)) {
869 hw_error("PIO: bad size (%u)", req
->size
);
872 if (req
->dir
== IOREQ_READ
) {
873 if (!req
->data_is_ptr
) {
874 req
->data
= do_inp(req
->addr
, req
->size
);
875 trace_cpu_ioreq_pio_read_reg(req
, req
->data
, req
->addr
,
880 for (i
= 0; i
< req
->count
; i
++) {
881 tmp
= do_inp(req
->addr
, req
->size
);
882 write_phys_req_item(req
->data
, req
, i
, &tmp
);
885 } else if (req
->dir
== IOREQ_WRITE
) {
886 if (!req
->data_is_ptr
) {
887 trace_cpu_ioreq_pio_write_reg(req
, req
->data
, req
->addr
,
889 do_outp(req
->addr
, req
->size
, req
->data
);
891 for (i
= 0; i
< req
->count
; i
++) {
894 read_phys_req_item(req
->data
, req
, i
, &tmp
);
895 do_outp(req
->addr
, req
->size
, tmp
);
901 static void cpu_ioreq_move(ioreq_t
*req
)
905 trace_cpu_ioreq_move(req
, req
->dir
, req
->df
, req
->data_is_ptr
, req
->addr
,
906 req
->data
, req
->count
, req
->size
);
908 if (req
->size
> sizeof(req
->data
)) {
909 hw_error("MMIO: bad size (%u)", req
->size
);
912 if (!req
->data_is_ptr
) {
913 if (req
->dir
== IOREQ_READ
) {
914 for (i
= 0; i
< req
->count
; i
++) {
915 read_phys_req_item(req
->addr
, req
, i
, &req
->data
);
917 } else if (req
->dir
== IOREQ_WRITE
) {
918 for (i
= 0; i
< req
->count
; i
++) {
919 write_phys_req_item(req
->addr
, req
, i
, &req
->data
);
925 if (req
->dir
== IOREQ_READ
) {
926 for (i
= 0; i
< req
->count
; i
++) {
927 read_phys_req_item(req
->addr
, req
, i
, &tmp
);
928 write_phys_req_item(req
->data
, req
, i
, &tmp
);
930 } else if (req
->dir
== IOREQ_WRITE
) {
931 for (i
= 0; i
< req
->count
; i
++) {
932 read_phys_req_item(req
->data
, req
, i
, &tmp
);
933 write_phys_req_item(req
->addr
, req
, i
, &tmp
);
939 static void cpu_ioreq_config(XenIOState
*state
, ioreq_t
*req
)
941 uint32_t sbdf
= req
->addr
>> 32;
942 uint32_t reg
= req
->addr
;
943 XenPciDevice
*xendev
;
945 if (req
->size
!= sizeof(uint8_t) && req
->size
!= sizeof(uint16_t) &&
946 req
->size
!= sizeof(uint32_t)) {
947 hw_error("PCI config access: bad size (%u)", req
->size
);
950 if (req
->count
!= 1) {
951 hw_error("PCI config access: bad count (%u)", req
->count
);
954 QLIST_FOREACH(xendev
, &state
->dev_list
, entry
) {
955 if (xendev
->sbdf
!= sbdf
) {
959 if (!req
->data_is_ptr
) {
960 if (req
->dir
== IOREQ_READ
) {
961 req
->data
= pci_host_config_read_common(
962 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
964 trace_cpu_ioreq_config_read(req
, xendev
->sbdf
, reg
,
965 req
->size
, req
->data
);
966 } else if (req
->dir
== IOREQ_WRITE
) {
967 trace_cpu_ioreq_config_write(req
, xendev
->sbdf
, reg
,
968 req
->size
, req
->data
);
969 pci_host_config_write_common(
970 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
971 req
->data
, req
->size
);
976 if (req
->dir
== IOREQ_READ
) {
977 tmp
= pci_host_config_read_common(
978 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
980 trace_cpu_ioreq_config_read(req
, xendev
->sbdf
, reg
,
982 write_phys_req_item(req
->data
, req
, 0, &tmp
);
983 } else if (req
->dir
== IOREQ_WRITE
) {
984 read_phys_req_item(req
->data
, req
, 0, &tmp
);
985 trace_cpu_ioreq_config_write(req
, xendev
->sbdf
, reg
,
987 pci_host_config_write_common(
988 xendev
->pci_dev
, reg
, PCI_CONFIG_SPACE_SIZE
,
995 static void regs_to_cpu(vmware_regs_t
*vmport_regs
, ioreq_t
*req
)
1000 cpu
= X86_CPU(current_cpu
);
1002 env
->regs
[R_EAX
] = req
->data
;
1003 env
->regs
[R_EBX
] = vmport_regs
->ebx
;
1004 env
->regs
[R_ECX
] = vmport_regs
->ecx
;
1005 env
->regs
[R_EDX
] = vmport_regs
->edx
;
1006 env
->regs
[R_ESI
] = vmport_regs
->esi
;
1007 env
->regs
[R_EDI
] = vmport_regs
->edi
;
1010 static void regs_from_cpu(vmware_regs_t
*vmport_regs
)
1012 X86CPU
*cpu
= X86_CPU(current_cpu
);
1013 CPUX86State
*env
= &cpu
->env
;
1015 vmport_regs
->ebx
= env
->regs
[R_EBX
];
1016 vmport_regs
->ecx
= env
->regs
[R_ECX
];
1017 vmport_regs
->edx
= env
->regs
[R_EDX
];
1018 vmport_regs
->esi
= env
->regs
[R_ESI
];
1019 vmport_regs
->edi
= env
->regs
[R_EDI
];
1022 static void handle_vmport_ioreq(XenIOState
*state
, ioreq_t
*req
)
1024 vmware_regs_t
*vmport_regs
;
1026 assert(state
->shared_vmport_page
);
1028 &state
->shared_vmport_page
->vcpu_vmport_regs
[state
->send_vcpu
];
1029 QEMU_BUILD_BUG_ON(sizeof(*req
) < sizeof(*vmport_regs
));
1031 current_cpu
= state
->cpu_by_vcpu_id
[state
->send_vcpu
];
1032 regs_to_cpu(vmport_regs
, req
);
1034 regs_from_cpu(vmport_regs
);
1038 static void handle_ioreq(XenIOState
*state
, ioreq_t
*req
)
1040 trace_handle_ioreq(req
, req
->type
, req
->dir
, req
->df
, req
->data_is_ptr
,
1041 req
->addr
, req
->data
, req
->count
, req
->size
);
1043 if (!req
->data_is_ptr
&& (req
->dir
== IOREQ_WRITE
) &&
1044 (req
->size
< sizeof (target_ulong
))) {
1045 req
->data
&= ((target_ulong
) 1 << (8 * req
->size
)) - 1;
1048 if (req
->dir
== IOREQ_WRITE
)
1049 trace_handle_ioreq_write(req
, req
->type
, req
->df
, req
->data_is_ptr
,
1050 req
->addr
, req
->data
, req
->count
, req
->size
);
1052 switch (req
->type
) {
1053 case IOREQ_TYPE_PIO
:
1056 case IOREQ_TYPE_COPY
:
1057 cpu_ioreq_move(req
);
1059 case IOREQ_TYPE_VMWARE_PORT
:
1060 handle_vmport_ioreq(state
, req
);
1062 case IOREQ_TYPE_TIMEOFFSET
:
1064 case IOREQ_TYPE_INVALIDATE
:
1065 xen_invalidate_map_cache();
1067 case IOREQ_TYPE_PCI_CONFIG
:
1068 cpu_ioreq_config(state
, req
);
1071 hw_error("Invalid ioreq type 0x%x\n", req
->type
);
1073 if (req
->dir
== IOREQ_READ
) {
1074 trace_handle_ioreq_read(req
, req
->type
, req
->df
, req
->data_is_ptr
,
1075 req
->addr
, req
->data
, req
->count
, req
->size
);
1079 static int handle_buffered_iopage(XenIOState
*state
)
1081 buffered_iopage_t
*buf_page
= state
->buffered_io_page
;
1082 buf_ioreq_t
*buf_req
= NULL
;
1090 memset(&req
, 0x00, sizeof(req
));
1091 req
.state
= STATE_IOREQ_READY
;
1093 req
.dir
= IOREQ_WRITE
;
1096 uint32_t rdptr
= buf_page
->read_pointer
, wrptr
;
1099 wrptr
= buf_page
->write_pointer
;
1101 if (rdptr
!= buf_page
->read_pointer
) {
1104 if (rdptr
== wrptr
) {
1107 buf_req
= &buf_page
->buf_ioreq
[rdptr
% IOREQ_BUFFER_SLOT_NUM
];
1108 req
.size
= 1U << buf_req
->size
;
1109 req
.addr
= buf_req
->addr
;
1110 req
.data
= buf_req
->data
;
1111 req
.type
= buf_req
->type
;
1113 qw
= (req
.size
== 8);
1115 if (rdptr
+ 1 == wrptr
) {
1116 hw_error("Incomplete quad word buffered ioreq");
1118 buf_req
= &buf_page
->buf_ioreq
[(rdptr
+ 1) %
1119 IOREQ_BUFFER_SLOT_NUM
];
1120 req
.data
|= ((uint64_t)buf_req
->data
) << 32;
1124 handle_ioreq(state
, &req
);
1126 /* Only req.data may get updated by handle_ioreq(), albeit even that
1127 * should not happen as such data would never make it to the guest (we
1128 * can only usefully see writes here after all).
1130 assert(req
.state
== STATE_IOREQ_READY
);
1131 assert(req
.count
== 1);
1132 assert(req
.dir
== IOREQ_WRITE
);
1133 assert(!req
.data_is_ptr
);
1135 atomic_add(&buf_page
->read_pointer
, qw
+ 1);
1141 static void handle_buffered_io(void *opaque
)
1143 XenIOState
*state
= opaque
;
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
));
1149 timer_del(state
->buffered_io_timer
);
1150 xenevtchn_unmask(state
->xce_handle
, state
->bufioreq_local_port
);
1154 static void cpu_handle_ioreq(void *opaque
)
1156 XenIOState
*state
= opaque
;
1157 ioreq_t
*req
= cpu_get_ioreq(state
);
1159 handle_buffered_iopage(state
);
1161 ioreq_t copy
= *req
;
1164 handle_ioreq(state
, ©
);
1165 req
->data
= copy
.data
;
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);
1177 xen_wmb(); /* Update ioreq contents /then/ update state. */
1180 * We do this before we send the response so that the tools
1181 * have the opportunity to pick up on the reset before the
1182 * guest resumes and does a hlt with interrupts disabled which
1183 * causes Xen to powerdown the domain.
1185 if (runstate_is_running()) {
1186 ShutdownCause request
;
1188 if (qemu_shutdown_requested_get()) {
1189 destroy_hvm_domain(false);
1191 request
= qemu_reset_requested_get();
1193 qemu_system_reset(request
);
1194 destroy_hvm_domain(true);
1198 req
->state
= STATE_IORESP_READY
;
1199 xenevtchn_notify(state
->xce_handle
,
1200 state
->ioreq_local_port
[state
->send_vcpu
]);
1204 static void xen_main_loop_prepare(XenIOState
*state
)
1208 if (state
->xce_handle
!= NULL
) {
1209 evtchn_fd
= xenevtchn_fd(state
->xce_handle
);
1212 state
->buffered_io_timer
= timer_new_ms(QEMU_CLOCK_REALTIME
, handle_buffered_io
,
1215 if (evtchn_fd
!= -1) {
1216 CPUState
*cpu_state
;
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
;
1224 qemu_set_fd_handler(evtchn_fd
, cpu_handle_ioreq
, NULL
, state
);
1229 static void xen_hvm_change_state_handler(void *opaque
, int running
,
1232 XenIOState
*state
= opaque
;
1235 xen_main_loop_prepare(state
);
1238 xen_set_ioreq_server_state(xen_domid
,
1240 (rstate
== RUN_STATE_RUNNING
));
1243 static void xen_exit_notifier(Notifier
*n
, void *data
)
1245 XenIOState
*state
= container_of(n
, XenIOState
, exit
);
1247 xenevtchn_close(state
->xce_handle
);
1248 xs_daemon_close(state
->xenstore
);
1251 #ifdef XEN_COMPAT_PHYSMAP
1252 static void xen_read_physmap(XenIOState
*state
)
1254 XenPhysmap
*physmap
= NULL
;
1255 unsigned int len
, num
, i
;
1256 char path
[80], *value
= NULL
;
1257 char **entries
= NULL
;
1259 snprintf(path
, sizeof(path
),
1260 "/local/domain/0/device-model/%d/physmap", xen_domid
);
1261 entries
= xs_directory(state
->xenstore
, 0, path
, &num
);
1262 if (entries
== NULL
)
1265 for (i
= 0; i
< num
; i
++) {
1266 physmap
= g_malloc(sizeof (XenPhysmap
));
1267 physmap
->phys_offset
= strtoull(entries
[i
], NULL
, 16);
1268 snprintf(path
, sizeof(path
),
1269 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1270 xen_domid
, entries
[i
]);
1271 value
= xs_read(state
->xenstore
, 0, path
, &len
);
1272 if (value
== NULL
) {
1276 physmap
->start_addr
= strtoull(value
, NULL
, 16);
1279 snprintf(path
, sizeof(path
),
1280 "/local/domain/0/device-model/%d/physmap/%s/size",
1281 xen_domid
, entries
[i
]);
1282 value
= xs_read(state
->xenstore
, 0, path
, &len
);
1283 if (value
== NULL
) {
1287 physmap
->size
= strtoull(value
, NULL
, 16);
1290 snprintf(path
, sizeof(path
),
1291 "/local/domain/0/device-model/%d/physmap/%s/name",
1292 xen_domid
, entries
[i
]);
1293 physmap
->name
= xs_read(state
->xenstore
, 0, path
, &len
);
1295 QLIST_INSERT_HEAD(&xen_physmap
, physmap
, list
);
1300 static void xen_read_physmap(XenIOState
*state
)
1305 static void xen_wakeup_notifier(Notifier
*notifier
, void *data
)
1307 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 0);
1310 static int xen_map_ioreq_server(XenIOState
*state
)
1313 xenforeignmemory_resource_handle
*fres
;
1314 xen_pfn_t ioreq_pfn
;
1315 xen_pfn_t bufioreq_pfn
;
1316 evtchn_port_t bufioreq_evtchn
;
1320 * Attempt to map using the resource API and fall back to normal
1321 * foreign mapping if this is not supported.
1323 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq
!= 0);
1324 QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
1325 fres
= xenforeignmemory_map_resource(xen_fmem
, xen_domid
,
1326 XENMEM_resource_ioreq_server
,
1327 state
->ioservid
, 0, 2,
1329 PROT_READ
| PROT_WRITE
, 0);
1331 trace_xen_map_resource_ioreq(state
->ioservid
, addr
);
1332 state
->buffered_io_page
= addr
;
1333 state
->shared_page
= addr
+ TARGET_PAGE_SIZE
;
1334 } else if (errno
!= EOPNOTSUPP
) {
1335 error_report("failed to map ioreq server resources: error %d handle=%p",
1340 rc
= xen_get_ioreq_server_info(xen_domid
, state
->ioservid
,
1341 (state
->shared_page
== NULL
) ?
1343 (state
->buffered_io_page
== NULL
) ?
1344 &bufioreq_pfn
: NULL
,
1347 error_report("failed to get ioreq server info: error %d handle=%p",
1352 if (state
->shared_page
== NULL
) {
1353 DPRINTF("shared page at pfn %lx\n", ioreq_pfn
);
1355 state
->shared_page
= xenforeignmemory_map(xen_fmem
, xen_domid
,
1356 PROT_READ
| PROT_WRITE
,
1357 1, &ioreq_pfn
, NULL
);
1358 if (state
->shared_page
== NULL
) {
1359 error_report("map shared IO page returned error %d handle=%p",
1364 if (state
->buffered_io_page
== NULL
) {
1365 DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn
);
1367 state
->buffered_io_page
= xenforeignmemory_map(xen_fmem
, xen_domid
,
1368 PROT_READ
| PROT_WRITE
,
1371 if (state
->buffered_io_page
== NULL
) {
1372 error_report("map buffered IO page returned error %d", errno
);
1377 if (state
->shared_page
== NULL
|| state
->buffered_io_page
== NULL
) {
1381 DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn
);
1383 state
->bufioreq_remote_port
= bufioreq_evtchn
;
1388 void xen_hvm_init(PCMachineState
*pcms
, MemoryRegion
**ram_memory
)
1390 MachineState
*ms
= MACHINE(pcms
);
1391 unsigned int max_cpus
= ms
->smp
.max_cpus
;
1393 xen_pfn_t ioreq_pfn
;
1396 state
= g_malloc0(sizeof (XenIOState
));
1398 state
->xce_handle
= xenevtchn_open(NULL
, 0);
1399 if (state
->xce_handle
== NULL
) {
1400 perror("xen: event channel open");
1404 state
->xenstore
= xs_daemon_open();
1405 if (state
->xenstore
== NULL
) {
1406 perror("xen: xenstore open");
1410 xen_create_ioreq_server(xen_domid
, &state
->ioservid
);
1412 state
->exit
.notify
= xen_exit_notifier
;
1413 qemu_add_exit_notifier(&state
->exit
);
1415 state
->suspend
.notify
= xen_suspend_notifier
;
1416 qemu_register_suspend_notifier(&state
->suspend
);
1418 state
->wakeup
.notify
= xen_wakeup_notifier
;
1419 qemu_register_wakeup_notifier(&state
->wakeup
);
1422 * Register wake-up support in QMP query-current-machine API
1424 qemu_register_wakeup_support();
1426 rc
= xen_map_ioreq_server(state
);
1431 rc
= xen_get_vmport_regs_pfn(xen_xc
, xen_domid
, &ioreq_pfn
);
1433 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn
);
1434 state
->shared_vmport_page
=
1435 xenforeignmemory_map(xen_fmem
, xen_domid
, PROT_READ
|PROT_WRITE
,
1436 1, &ioreq_pfn
, NULL
);
1437 if (state
->shared_vmport_page
== NULL
) {
1438 error_report("map shared vmport IO page returned error %d handle=%p",
1442 } else if (rc
!= -ENOSYS
) {
1443 error_report("get vmport regs pfn returned error %d, rc=%d",
1448 /* Note: cpus is empty at this point in init */
1449 state
->cpu_by_vcpu_id
= g_malloc0(max_cpus
* sizeof(CPUState
*));
1451 rc
= xen_set_ioreq_server_state(xen_domid
, state
->ioservid
, true);
1453 error_report("failed to enable ioreq server info: error %d handle=%p",
1458 state
->ioreq_local_port
= g_malloc0(max_cpus
* sizeof (evtchn_port_t
));
1460 /* FIXME: how about if we overflow the page here? */
1461 for (i
= 0; i
< max_cpus
; i
++) {
1462 rc
= xenevtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
1463 xen_vcpu_eport(state
->shared_page
, i
));
1465 error_report("shared evtchn %d bind error %d", i
, errno
);
1468 state
->ioreq_local_port
[i
] = rc
;
1471 rc
= xenevtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
1472 state
->bufioreq_remote_port
);
1474 error_report("buffered evtchn bind error %d", errno
);
1477 state
->bufioreq_local_port
= rc
;
1479 /* Init RAM management */
1480 #ifdef XEN_COMPAT_PHYSMAP
1481 xen_map_cache_init(xen_phys_offset_to_gaddr
, state
);
1483 xen_map_cache_init(NULL
, state
);
1485 xen_ram_init(pcms
, ram_size
, ram_memory
);
1487 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler
, state
);
1489 state
->memory_listener
= xen_memory_listener
;
1490 memory_listener_register(&state
->memory_listener
, &address_space_memory
);
1491 state
->log_for_dirtybit
= NULL
;
1493 state
->io_listener
= xen_io_listener
;
1494 memory_listener_register(&state
->io_listener
, &address_space_io
);
1496 state
->device_listener
= xen_device_listener
;
1497 QLIST_INIT(&state
->dev_list
);
1498 device_listener_register(&state
->device_listener
);
1502 /* Initialize backend core & drivers */
1503 if (xen_be_init() != 0) {
1504 error_report("xen backend core setup failed");
1507 xen_be_register_common();
1509 QLIST_INIT(&xen_physmap
);
1510 xen_read_physmap(state
);
1512 /* Disable ACPI build because Xen handles it */
1513 pcms
->acpi_build_enabled
= false;
1518 error_report("xen hardware virtual machine initialisation failed");
1522 void destroy_hvm_domain(bool reboot
)
1524 xc_interface
*xc_handle
;
1528 unsigned int reason
= reboot
? SHUTDOWN_reboot
: SHUTDOWN_poweroff
;
1531 rc
= xendevicemodel_shutdown(xen_dmod
, xen_domid
, reason
);
1535 if (errno
!= ENOTTY
/* old Xen */) {
1536 perror("xendevicemodel_shutdown failed");
1538 /* well, try the old thing then */
1541 xc_handle
= xc_interface_open(0, 0, 0);
1542 if (xc_handle
== NULL
) {
1543 fprintf(stderr
, "Cannot acquire xenctrl handle\n");
1545 sts
= xc_domain_shutdown(xc_handle
, xen_domid
, reason
);
1547 fprintf(stderr
, "xc_domain_shutdown failed to issue %s, "
1548 "sts %d, %s\n", reboot
? "reboot" : "poweroff",
1549 sts
, strerror(errno
));
1551 fprintf(stderr
, "Issued domain %d %s\n", xen_domid
,
1552 reboot
? "reboot" : "poweroff");
1554 xc_interface_close(xc_handle
);
1558 void xen_register_framebuffer(MemoryRegion
*mr
)
1563 void xen_shutdown_fatal_error(const char *fmt
, ...)
1568 vfprintf(stderr
, fmt
, ap
);
1570 fprintf(stderr
, "Will destroy the domain.\n");
1571 /* destroy the domain */
1572 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR
);
1575 void xen_hvm_modified_memory(ram_addr_t start
, ram_addr_t length
)
1577 if (unlikely(xen_in_migration
)) {
1579 ram_addr_t start_pfn
, nb_pages
;
1581 start
= xen_phys_offset_to_gaddr(start
, length
);
1584 length
= TARGET_PAGE_SIZE
;
1586 start_pfn
= start
>> TARGET_PAGE_BITS
;
1587 nb_pages
= ((start
+ length
+ TARGET_PAGE_SIZE
- 1) >> TARGET_PAGE_BITS
)
1589 rc
= xen_modified_memory(xen_domid
, start_pfn
, nb_pages
);
1592 "%s failed for "RAM_ADDR_FMT
" ("RAM_ADDR_FMT
"): %i, %s\n",
1593 __func__
, start
, nb_pages
, errno
, strerror(errno
));
1598 void qmp_xen_set_global_dirty_log(bool enable
, Error
**errp
)
1601 memory_global_dirty_log_start();
1603 memory_global_dirty_log_stop();