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.
15 #include "hw/xen_common.h"
16 #include "hw/xen_backend.h"
19 #include "xen-mapcache.h"
21 #include "exec-memory.h"
23 #include <xen/hvm/ioreq.h>
24 #include <xen/hvm/params.h>
25 #include <xen/hvm/e820.h>
30 #define DPRINTF(fmt, ...) \
31 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
33 #define DPRINTF(fmt, ...) \
37 static MemoryRegion ram_memory
, ram_640k
, ram_lo
, ram_hi
;
38 static MemoryRegion
*framebuffer
;
40 /* Compatibility with older version */
41 #if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
42 static inline uint32_t xen_vcpu_eport(shared_iopage_t
*shared_page
, int i
)
44 return shared_page
->vcpu_iodata
[i
].vp_eport
;
46 static inline ioreq_t
*xen_vcpu_ioreq(shared_iopage_t
*shared_page
, int vcpu
)
48 return &shared_page
->vcpu_iodata
[vcpu
].vp_ioreq
;
50 # define FMT_ioreq_size PRIx64
52 static inline uint32_t xen_vcpu_eport(shared_iopage_t
*shared_page
, int i
)
54 return shared_page
->vcpu_ioreq
[i
].vp_eport
;
56 static inline ioreq_t
*xen_vcpu_ioreq(shared_iopage_t
*shared_page
, int vcpu
)
58 return &shared_page
->vcpu_ioreq
[vcpu
];
60 # define FMT_ioreq_size "u"
63 #define BUFFER_IO_MAX_DELAY 100
65 typedef struct XenPhysmap
{
66 target_phys_addr_t start_addr
;
69 target_phys_addr_t phys_offset
;
71 QLIST_ENTRY(XenPhysmap
) list
;
74 typedef struct XenIOState
{
75 shared_iopage_t
*shared_page
;
76 buffered_iopage_t
*buffered_io_page
;
77 QEMUTimer
*buffered_io_timer
;
78 /* the evtchn port for polling the notification, */
79 evtchn_port_t
*ioreq_local_port
;
80 /* the evtchn fd for polling */
82 /* which vcpu we are serving */
85 struct xs_handle
*xenstore
;
86 MemoryListener memory_listener
;
87 QLIST_HEAD(, XenPhysmap
) physmap
;
88 target_phys_addr_t free_phys_offset
;
89 const XenPhysmap
*log_for_dirtybit
;
94 /* Xen specific function for piix pci */
96 int xen_pci_slot_get_pirq(PCIDevice
*pci_dev
, int irq_num
)
98 return irq_num
+ ((pci_dev
->devfn
>> 3) << 2);
101 void xen_piix3_set_irq(void *opaque
, int irq_num
, int level
)
103 xc_hvm_set_pci_intx_level(xen_xc
, xen_domid
, 0, 0, irq_num
>> 2,
107 void xen_piix_pci_write_config_client(uint32_t address
, uint32_t val
, int len
)
111 /* Scan for updates to PCI link routes (0x60-0x63). */
112 for (i
= 0; i
< len
; i
++) {
113 uint8_t v
= (val
>> (8 * i
)) & 0xff;
118 if (((address
+ i
) >= 0x60) && ((address
+ i
) <= 0x63)) {
119 xc_hvm_set_pci_link_route(xen_xc
, xen_domid
, address
+ i
- 0x60, v
);
124 void xen_cmos_set_s3_resume(void *opaque
, int irq
, int level
)
126 pc_cmos_set_s3_resume(opaque
, irq
, level
);
128 xc_set_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_ACPI_S_STATE
, 3);
132 /* Xen Interrupt Controller */
134 static void xen_set_irq(void *opaque
, int irq
, int level
)
136 xc_hvm_set_isa_irq_level(xen_xc
, xen_domid
, irq
, level
);
139 qemu_irq
*xen_interrupt_controller_init(void)
141 return qemu_allocate_irqs(xen_set_irq
, NULL
, 16);
146 static void xen_ram_init(ram_addr_t ram_size
)
148 MemoryRegion
*sysmem
= get_system_memory();
149 ram_addr_t below_4g_mem_size
, above_4g_mem_size
= 0;
150 ram_addr_t block_len
;
152 block_len
= ram_size
;
153 if (ram_size
>= HVM_BELOW_4G_RAM_END
) {
154 /* Xen does not allocate the memory continuously, and keep a hole at
155 * HVM_BELOW_4G_MMIO_START of HVM_BELOW_4G_MMIO_LENGTH
157 block_len
+= HVM_BELOW_4G_MMIO_LENGTH
;
159 memory_region_init_ram(&ram_memory
, "xen.ram", block_len
);
160 vmstate_register_ram_global(&ram_memory
);
162 if (ram_size
>= HVM_BELOW_4G_RAM_END
) {
163 above_4g_mem_size
= ram_size
- HVM_BELOW_4G_RAM_END
;
164 below_4g_mem_size
= HVM_BELOW_4G_RAM_END
;
166 below_4g_mem_size
= ram_size
;
169 memory_region_init_alias(&ram_640k
, "xen.ram.640k",
170 &ram_memory
, 0, 0xa0000);
171 memory_region_add_subregion(sysmem
, 0, &ram_640k
);
172 /* Skip of the VGA IO memory space, it will be registered later by the VGA
175 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
176 * the Options ROM, so it is registered here as RAM.
178 memory_region_init_alias(&ram_lo
, "xen.ram.lo",
179 &ram_memory
, 0xc0000, below_4g_mem_size
- 0xc0000);
180 memory_region_add_subregion(sysmem
, 0xc0000, &ram_lo
);
181 if (above_4g_mem_size
> 0) {
182 memory_region_init_alias(&ram_hi
, "xen.ram.hi",
183 &ram_memory
, 0x100000000ULL
,
185 memory_region_add_subregion(sysmem
, 0x100000000ULL
, &ram_hi
);
189 void xen_ram_alloc(ram_addr_t ram_addr
, ram_addr_t size
, MemoryRegion
*mr
)
191 unsigned long nr_pfn
;
195 if (mr
== &ram_memory
) {
199 trace_xen_ram_alloc(ram_addr
, size
);
201 nr_pfn
= size
>> TARGET_PAGE_BITS
;
202 pfn_list
= g_malloc(sizeof (*pfn_list
) * nr_pfn
);
204 for (i
= 0; i
< nr_pfn
; i
++) {
205 pfn_list
[i
] = (ram_addr
>> TARGET_PAGE_BITS
) + i
;
208 if (xc_domain_populate_physmap_exact(xen_xc
, xen_domid
, nr_pfn
, 0, 0, pfn_list
)) {
209 hw_error("xen: failed to populate ram at " RAM_ADDR_FMT
, ram_addr
);
215 static XenPhysmap
*get_physmapping(XenIOState
*state
,
216 target_phys_addr_t start_addr
, ram_addr_t size
)
218 XenPhysmap
*physmap
= NULL
;
220 start_addr
&= TARGET_PAGE_MASK
;
222 QLIST_FOREACH(physmap
, &state
->physmap
, list
) {
223 if (range_covers_byte(physmap
->start_addr
, physmap
->size
, start_addr
)) {
230 #if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340
231 static int xen_add_to_physmap(XenIOState
*state
,
232 target_phys_addr_t start_addr
,
235 target_phys_addr_t offset_within_region
)
239 XenPhysmap
*physmap
= NULL
;
240 target_phys_addr_t pfn
, start_gpfn
;
241 target_phys_addr_t phys_offset
= memory_region_get_ram_addr(mr
);
243 if (get_physmapping(state
, start_addr
, size
)) {
250 /* Xen can only handle a single dirty log region for now and we want
251 * the linear framebuffer to be that region.
252 * Avoid tracking any regions that is not videoram and avoid tracking
253 * the legacy vga region. */
254 if (mr
== framebuffer
&& start_addr
> 0xbffff) {
260 DPRINTF("mapping vram to %llx - %llx\n", start_addr
, start_addr
+ size
);
262 pfn
= phys_offset
>> TARGET_PAGE_BITS
;
263 start_gpfn
= start_addr
>> TARGET_PAGE_BITS
;
264 for (i
= 0; i
< size
>> TARGET_PAGE_BITS
; i
++) {
265 unsigned long idx
= pfn
+ i
;
266 xen_pfn_t gpfn
= start_gpfn
+ i
;
268 rc
= xc_domain_add_to_physmap(xen_xc
, xen_domid
, XENMAPSPACE_gmfn
, idx
, gpfn
);
270 DPRINTF("add_to_physmap MFN %"PRI_xen_pfn
" to PFN %"
271 PRI_xen_pfn
" failed: %d\n", idx
, gpfn
, rc
);
276 physmap
= g_malloc(sizeof (XenPhysmap
));
278 physmap
->start_addr
= start_addr
;
279 physmap
->size
= size
;
280 physmap
->phys_offset
= phys_offset
;
282 QLIST_INSERT_HEAD(&state
->physmap
, physmap
, list
);
284 xc_domain_pin_memory_cacheattr(xen_xc
, xen_domid
,
285 start_addr
>> TARGET_PAGE_BITS
,
286 (start_addr
+ size
) >> TARGET_PAGE_BITS
,
287 XEN_DOMCTL_MEM_CACHEATTR_WB
);
291 static int xen_remove_from_physmap(XenIOState
*state
,
292 target_phys_addr_t start_addr
,
297 XenPhysmap
*physmap
= NULL
;
298 target_phys_addr_t phys_offset
= 0;
300 physmap
= get_physmapping(state
, start_addr
, size
);
301 if (physmap
== NULL
) {
305 phys_offset
= physmap
->phys_offset
;
306 size
= physmap
->size
;
308 DPRINTF("unmapping vram to %llx - %llx, from %llx\n",
309 phys_offset
, phys_offset
+ size
, start_addr
);
311 size
>>= TARGET_PAGE_BITS
;
312 start_addr
>>= TARGET_PAGE_BITS
;
313 phys_offset
>>= TARGET_PAGE_BITS
;
314 for (i
= 0; i
< size
; i
++) {
315 unsigned long idx
= start_addr
+ i
;
316 xen_pfn_t gpfn
= phys_offset
+ i
;
318 rc
= xc_domain_add_to_physmap(xen_xc
, xen_domid
, XENMAPSPACE_gmfn
, idx
, gpfn
);
320 fprintf(stderr
, "add_to_physmap MFN %"PRI_xen_pfn
" to PFN %"
321 PRI_xen_pfn
" failed: %d\n", idx
, gpfn
, rc
);
326 QLIST_REMOVE(physmap
, list
);
327 if (state
->log_for_dirtybit
== physmap
) {
328 state
->log_for_dirtybit
= NULL
;
336 static int xen_add_to_physmap(XenIOState
*state
,
337 target_phys_addr_t start_addr
,
340 target_phys_addr_t offset_within_region
)
345 static int xen_remove_from_physmap(XenIOState
*state
,
346 target_phys_addr_t start_addr
,
353 static void xen_set_memory(struct MemoryListener
*listener
,
354 MemoryRegionSection
*section
,
357 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
358 target_phys_addr_t start_addr
= section
->offset_within_address_space
;
359 ram_addr_t size
= section
->size
;
360 bool log_dirty
= memory_region_is_logging(section
->mr
);
361 hvmmem_type_t mem_type
;
363 if (!memory_region_is_ram(section
->mr
)) {
367 if (!(section
->mr
!= &ram_memory
368 && ( (log_dirty
&& add
) || (!log_dirty
&& !add
)))) {
372 trace_xen_client_set_memory(start_addr
, size
, log_dirty
);
374 start_addr
&= TARGET_PAGE_MASK
;
375 size
= TARGET_PAGE_ALIGN(size
);
378 if (!memory_region_is_rom(section
->mr
)) {
379 xen_add_to_physmap(state
, start_addr
, size
,
380 section
->mr
, section
->offset_within_region
);
382 mem_type
= HVMMEM_ram_ro
;
383 if (xc_hvm_set_mem_type(xen_xc
, xen_domid
, mem_type
,
384 start_addr
>> TARGET_PAGE_BITS
,
385 size
>> TARGET_PAGE_BITS
)) {
386 DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx
"\n",
391 if (xen_remove_from_physmap(state
, start_addr
, size
) < 0) {
392 DPRINTF("physmapping does not exist at "TARGET_FMT_plx
"\n", start_addr
);
397 static void xen_region_add(MemoryListener
*listener
,
398 MemoryRegionSection
*section
)
400 xen_set_memory(listener
, section
, true);
403 static void xen_region_del(MemoryListener
*listener
,
404 MemoryRegionSection
*section
)
406 xen_set_memory(listener
, section
, false);
409 static void xen_sync_dirty_bitmap(XenIOState
*state
,
410 target_phys_addr_t start_addr
,
413 target_phys_addr_t npages
= size
>> TARGET_PAGE_BITS
;
414 const int width
= sizeof(unsigned long) * 8;
415 unsigned long bitmap
[(npages
+ width
- 1) / width
];
417 const XenPhysmap
*physmap
= NULL
;
419 physmap
= get_physmapping(state
, start_addr
, size
);
420 if (physmap
== NULL
) {
425 if (state
->log_for_dirtybit
== NULL
) {
426 state
->log_for_dirtybit
= physmap
;
427 } else if (state
->log_for_dirtybit
!= physmap
) {
428 /* Only one range for dirty bitmap can be tracked. */
432 rc
= xc_hvm_track_dirty_vram(xen_xc
, xen_domid
,
433 start_addr
>> TARGET_PAGE_BITS
, npages
,
436 if (rc
!= -ENODATA
) {
437 fprintf(stderr
, "xen: track_dirty_vram failed (0x" TARGET_FMT_plx
438 ", 0x" TARGET_FMT_plx
"): %s\n",
439 start_addr
, start_addr
+ size
, strerror(-rc
));
444 for (i
= 0; i
< ARRAY_SIZE(bitmap
); i
++) {
445 unsigned long map
= bitmap
[i
];
449 memory_region_set_dirty(framebuffer
,
450 (i
* width
+ j
) * TARGET_PAGE_SIZE
,
456 static void xen_log_start(MemoryListener
*listener
,
457 MemoryRegionSection
*section
)
459 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
461 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
465 static void xen_log_stop(MemoryListener
*listener
, MemoryRegionSection
*section
)
467 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
469 state
->log_for_dirtybit
= NULL
;
470 /* Disable dirty bit tracking */
471 xc_hvm_track_dirty_vram(xen_xc
, xen_domid
, 0, 0, NULL
);
474 static void xen_log_sync(MemoryListener
*listener
, MemoryRegionSection
*section
)
476 XenIOState
*state
= container_of(listener
, XenIOState
, memory_listener
);
478 xen_sync_dirty_bitmap(state
, section
->offset_within_address_space
,
482 static void xen_log_global_start(MemoryListener
*listener
)
486 static void xen_log_global_stop(MemoryListener
*listener
)
490 static void xen_eventfd_add(MemoryListener
*listener
,
491 MemoryRegionSection
*section
,
492 bool match_data
, uint64_t data
, int fd
)
496 static void xen_eventfd_del(MemoryListener
*listener
,
497 MemoryRegionSection
*section
,
498 bool match_data
, uint64_t data
, int fd
)
502 static MemoryListener xen_memory_listener
= {
503 .region_add
= xen_region_add
,
504 .region_del
= xen_region_del
,
505 .log_start
= xen_log_start
,
506 .log_stop
= xen_log_stop
,
507 .log_sync
= xen_log_sync
,
508 .log_global_start
= xen_log_global_start
,
509 .log_global_stop
= xen_log_global_stop
,
510 .eventfd_add
= xen_eventfd_add
,
511 .eventfd_del
= xen_eventfd_del
,
515 /* VCPU Operations, MMIO, IO ring ... */
517 static void xen_reset_vcpu(void *opaque
)
519 CPUState
*env
= opaque
;
524 void xen_vcpu_init(void)
528 if ((first_cpu
= qemu_get_cpu(0))) {
529 qemu_register_reset(xen_reset_vcpu
, first_cpu
);
530 xen_reset_vcpu(first_cpu
);
534 /* get the ioreq packets from share mem */
535 static ioreq_t
*cpu_get_ioreq_from_shared_memory(XenIOState
*state
, int vcpu
)
537 ioreq_t
*req
= xen_vcpu_ioreq(state
->shared_page
, vcpu
);
539 if (req
->state
!= STATE_IOREQ_READY
) {
540 DPRINTF("I/O request not ready: "
541 "%x, ptr: %x, port: %"PRIx64
", "
542 "data: %"PRIx64
", count: %" FMT_ioreq_size
", size: %" FMT_ioreq_size
"\n",
543 req
->state
, req
->data_is_ptr
, req
->addr
,
544 req
->data
, req
->count
, req
->size
);
548 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
550 req
->state
= STATE_IOREQ_INPROCESS
;
554 /* use poll to get the port notification */
555 /* ioreq_vec--out,the */
556 /* retval--the number of ioreq packet */
557 static ioreq_t
*cpu_get_ioreq(XenIOState
*state
)
562 port
= xc_evtchn_pending(state
->xce_handle
);
564 for (i
= 0; i
< smp_cpus
; i
++) {
565 if (state
->ioreq_local_port
[i
] == port
) {
571 hw_error("Fatal error while trying to get io event!\n");
574 /* unmask the wanted port again */
575 xc_evtchn_unmask(state
->xce_handle
, port
);
577 /* get the io packet from shared memory */
578 state
->send_vcpu
= i
;
579 return cpu_get_ioreq_from_shared_memory(state
, i
);
582 /* read error or read nothing */
586 static uint32_t do_inp(pio_addr_t addr
, unsigned long size
)
590 return cpu_inb(addr
);
592 return cpu_inw(addr
);
594 return cpu_inl(addr
);
596 hw_error("inp: bad size: %04"FMT_pioaddr
" %lx", addr
, size
);
600 static void do_outp(pio_addr_t addr
,
601 unsigned long size
, uint32_t val
)
605 return cpu_outb(addr
, val
);
607 return cpu_outw(addr
, val
);
609 return cpu_outl(addr
, val
);
611 hw_error("outp: bad size: %04"FMT_pioaddr
" %lx", addr
, size
);
615 static void cpu_ioreq_pio(ioreq_t
*req
)
619 sign
= req
->df
? -1 : 1;
621 if (req
->dir
== IOREQ_READ
) {
622 if (!req
->data_is_ptr
) {
623 req
->data
= do_inp(req
->addr
, req
->size
);
627 for (i
= 0; i
< req
->count
; i
++) {
628 tmp
= do_inp(req
->addr
, req
->size
);
629 cpu_physical_memory_write(req
->data
+ (sign
* i
* req
->size
),
630 (uint8_t *) &tmp
, req
->size
);
633 } else if (req
->dir
== IOREQ_WRITE
) {
634 if (!req
->data_is_ptr
) {
635 do_outp(req
->addr
, req
->size
, req
->data
);
637 for (i
= 0; i
< req
->count
; i
++) {
640 cpu_physical_memory_read(req
->data
+ (sign
* i
* req
->size
),
641 (uint8_t*) &tmp
, req
->size
);
642 do_outp(req
->addr
, req
->size
, tmp
);
648 static void cpu_ioreq_move(ioreq_t
*req
)
652 sign
= req
->df
? -1 : 1;
654 if (!req
->data_is_ptr
) {
655 if (req
->dir
== IOREQ_READ
) {
656 for (i
= 0; i
< req
->count
; i
++) {
657 cpu_physical_memory_read(req
->addr
+ (sign
* i
* req
->size
),
658 (uint8_t *) &req
->data
, req
->size
);
660 } else if (req
->dir
== IOREQ_WRITE
) {
661 for (i
= 0; i
< req
->count
; i
++) {
662 cpu_physical_memory_write(req
->addr
+ (sign
* i
* req
->size
),
663 (uint8_t *) &req
->data
, req
->size
);
669 if (req
->dir
== IOREQ_READ
) {
670 for (i
= 0; i
< req
->count
; i
++) {
671 cpu_physical_memory_read(req
->addr
+ (sign
* i
* req
->size
),
672 (uint8_t*) &tmp
, req
->size
);
673 cpu_physical_memory_write(req
->data
+ (sign
* i
* req
->size
),
674 (uint8_t*) &tmp
, req
->size
);
676 } else if (req
->dir
== IOREQ_WRITE
) {
677 for (i
= 0; i
< req
->count
; i
++) {
678 cpu_physical_memory_read(req
->data
+ (sign
* i
* req
->size
),
679 (uint8_t*) &tmp
, req
->size
);
680 cpu_physical_memory_write(req
->addr
+ (sign
* i
* req
->size
),
681 (uint8_t*) &tmp
, req
->size
);
687 static void handle_ioreq(ioreq_t
*req
)
689 if (!req
->data_is_ptr
&& (req
->dir
== IOREQ_WRITE
) &&
690 (req
->size
< sizeof (target_ulong
))) {
691 req
->data
&= ((target_ulong
) 1 << (8 * req
->size
)) - 1;
698 case IOREQ_TYPE_COPY
:
701 case IOREQ_TYPE_TIMEOFFSET
:
703 case IOREQ_TYPE_INVALIDATE
:
704 xen_invalidate_map_cache();
707 hw_error("Invalid ioreq type 0x%x\n", req
->type
);
711 static void handle_buffered_iopage(XenIOState
*state
)
713 buf_ioreq_t
*buf_req
= NULL
;
717 if (!state
->buffered_io_page
) {
721 while (state
->buffered_io_page
->read_pointer
!= state
->buffered_io_page
->write_pointer
) {
722 buf_req
= &state
->buffered_io_page
->buf_ioreq
[
723 state
->buffered_io_page
->read_pointer
% IOREQ_BUFFER_SLOT_NUM
];
724 req
.size
= 1UL << buf_req
->size
;
726 req
.addr
= buf_req
->addr
;
727 req
.data
= buf_req
->data
;
728 req
.state
= STATE_IOREQ_READY
;
729 req
.dir
= buf_req
->dir
;
731 req
.type
= buf_req
->type
;
733 qw
= (req
.size
== 8);
735 buf_req
= &state
->buffered_io_page
->buf_ioreq
[
736 (state
->buffered_io_page
->read_pointer
+ 1) % IOREQ_BUFFER_SLOT_NUM
];
737 req
.data
|= ((uint64_t)buf_req
->data
) << 32;
743 state
->buffered_io_page
->read_pointer
+= qw
? 2 : 1;
747 static void handle_buffered_io(void *opaque
)
749 XenIOState
*state
= opaque
;
751 handle_buffered_iopage(state
);
752 qemu_mod_timer(state
->buffered_io_timer
,
753 BUFFER_IO_MAX_DELAY
+ qemu_get_clock_ms(rt_clock
));
756 static void cpu_handle_ioreq(void *opaque
)
758 XenIOState
*state
= opaque
;
759 ioreq_t
*req
= cpu_get_ioreq(state
);
761 handle_buffered_iopage(state
);
765 if (req
->state
!= STATE_IOREQ_INPROCESS
) {
766 fprintf(stderr
, "Badness in I/O request ... not in service?!: "
767 "%x, ptr: %x, port: %"PRIx64
", "
768 "data: %"PRIx64
", count: %" FMT_ioreq_size
", size: %" FMT_ioreq_size
"\n",
769 req
->state
, req
->data_is_ptr
, req
->addr
,
770 req
->data
, req
->count
, req
->size
);
771 destroy_hvm_domain();
775 xen_wmb(); /* Update ioreq contents /then/ update state. */
778 * We do this before we send the response so that the tools
779 * have the opportunity to pick up on the reset before the
780 * guest resumes and does a hlt with interrupts disabled which
781 * causes Xen to powerdown the domain.
783 if (runstate_is_running()) {
784 if (qemu_shutdown_requested_get()) {
785 destroy_hvm_domain();
787 if (qemu_reset_requested_get()) {
788 qemu_system_reset(VMRESET_REPORT
);
792 req
->state
= STATE_IORESP_READY
;
793 xc_evtchn_notify(state
->xce_handle
, state
->ioreq_local_port
[state
->send_vcpu
]);
797 static int store_dev_info(int domid
, CharDriverState
*cs
, const char *string
)
799 struct xs_handle
*xs
= NULL
;
801 char *newpath
= NULL
;
805 /* Only continue if we're talking to a pty. */
806 if (strncmp(cs
->filename
, "pty:", 4)) {
809 pts
= cs
->filename
+ 4;
811 /* We now have everything we need to set the xenstore entry. */
814 fprintf(stderr
, "Could not contact XenStore\n");
818 path
= xs_get_domain_path(xs
, domid
);
820 fprintf(stderr
, "xs_get_domain_path() error\n");
823 newpath
= realloc(path
, (strlen(path
) + strlen(string
) +
824 strlen("/tty") + 1));
825 if (newpath
== NULL
) {
826 fprintf(stderr
, "realloc error\n");
831 strcat(path
, string
);
832 strcat(path
, "/tty");
833 if (!xs_write(xs
, XBT_NULL
, path
, pts
, strlen(pts
))) {
834 fprintf(stderr
, "xs_write for '%s' fail", string
);
846 void xenstore_store_pv_console_info(int i
, CharDriverState
*chr
)
849 store_dev_info(xen_domid
, chr
, "/console");
852 snprintf(buf
, sizeof(buf
), "/device/console/%d", i
);
853 store_dev_info(xen_domid
, chr
, buf
);
857 static void xenstore_record_dm_state(struct xs_handle
*xs
, const char *state
)
862 fprintf(stderr
, "xenstore connection not initialized\n");
866 snprintf(path
, sizeof (path
), "/local/domain/0/device-model/%u/state", xen_domid
);
867 if (!xs_write(xs
, XBT_NULL
, path
, state
, strlen(state
))) {
868 fprintf(stderr
, "error recording dm state\n");
873 static void xen_main_loop_prepare(XenIOState
*state
)
877 if (state
->xce_handle
!= XC_HANDLER_INITIAL_VALUE
) {
878 evtchn_fd
= xc_evtchn_fd(state
->xce_handle
);
881 state
->buffered_io_timer
= qemu_new_timer_ms(rt_clock
, handle_buffered_io
,
883 qemu_mod_timer(state
->buffered_io_timer
, qemu_get_clock_ms(rt_clock
));
885 if (evtchn_fd
!= -1) {
886 qemu_set_fd_handler(evtchn_fd
, cpu_handle_ioreq
, NULL
, state
);
893 static void xen_change_state_handler(void *opaque
, int running
,
897 /* record state running */
898 xenstore_record_dm_state(xenstore
, "running");
902 static void xen_hvm_change_state_handler(void *opaque
, int running
,
905 XenIOState
*xstate
= opaque
;
907 xen_main_loop_prepare(xstate
);
911 static void xen_exit_notifier(Notifier
*n
, void *data
)
913 XenIOState
*state
= container_of(n
, XenIOState
, exit
);
915 xc_evtchn_close(state
->xce_handle
);
916 xs_daemon_close(state
->xenstore
);
921 xen_xc
= xen_xc_interface_open(0, 0, 0);
922 if (xen_xc
== XC_HANDLER_INITIAL_VALUE
) {
923 xen_be_printf(NULL
, 0, "can't open xen interface\n");
926 qemu_add_vm_change_state_handler(xen_change_state_handler
, NULL
);
931 int xen_hvm_init(void)
934 unsigned long ioreq_pfn
;
937 state
= g_malloc0(sizeof (XenIOState
));
939 state
->xce_handle
= xen_xc_evtchn_open(NULL
, 0);
940 if (state
->xce_handle
== XC_HANDLER_INITIAL_VALUE
) {
941 perror("xen: event channel open");
945 state
->xenstore
= xs_daemon_open();
946 if (state
->xenstore
== NULL
) {
947 perror("xen: xenstore open");
951 state
->exit
.notify
= xen_exit_notifier
;
952 qemu_add_exit_notifier(&state
->exit
);
954 xc_get_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_IOREQ_PFN
, &ioreq_pfn
);
955 DPRINTF("shared page at pfn %lx\n", ioreq_pfn
);
956 state
->shared_page
= xc_map_foreign_range(xen_xc
, xen_domid
, XC_PAGE_SIZE
,
957 PROT_READ
|PROT_WRITE
, ioreq_pfn
);
958 if (state
->shared_page
== NULL
) {
959 hw_error("map shared IO page returned error %d handle=" XC_INTERFACE_FMT
,
963 xc_get_hvm_param(xen_xc
, xen_domid
, HVM_PARAM_BUFIOREQ_PFN
, &ioreq_pfn
);
964 DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn
);
965 state
->buffered_io_page
= xc_map_foreign_range(xen_xc
, xen_domid
, XC_PAGE_SIZE
,
966 PROT_READ
|PROT_WRITE
, ioreq_pfn
);
967 if (state
->buffered_io_page
== NULL
) {
968 hw_error("map buffered IO page returned error %d", errno
);
971 state
->ioreq_local_port
= g_malloc0(smp_cpus
* sizeof (evtchn_port_t
));
973 /* FIXME: how about if we overflow the page here? */
974 for (i
= 0; i
< smp_cpus
; i
++) {
975 rc
= xc_evtchn_bind_interdomain(state
->xce_handle
, xen_domid
,
976 xen_vcpu_eport(state
->shared_page
, i
));
978 fprintf(stderr
, "bind interdomain ioctl error %d\n", errno
);
981 state
->ioreq_local_port
[i
] = rc
;
984 /* Init RAM management */
985 xen_map_cache_init();
986 xen_ram_init(ram_size
);
988 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler
, state
);
990 state
->memory_listener
= xen_memory_listener
;
991 QLIST_INIT(&state
->physmap
);
992 memory_listener_register(&state
->memory_listener
, get_system_memory());
993 state
->log_for_dirtybit
= NULL
;
995 /* Initialize backend core & drivers */
996 if (xen_be_init() != 0) {
997 fprintf(stderr
, "%s: xen backend core setup failed\n", __FUNCTION__
);
1000 xen_be_register("console", &xen_console_ops
);
1001 xen_be_register("vkbd", &xen_kbdmouse_ops
);
1002 xen_be_register("qdisk", &xen_blkdev_ops
);
1007 void destroy_hvm_domain(void)
1012 xc_handle
= xen_xc_interface_open(0, 0, 0);
1013 if (xc_handle
== XC_HANDLER_INITIAL_VALUE
) {
1014 fprintf(stderr
, "Cannot acquire xenctrl handle\n");
1016 sts
= xc_domain_shutdown(xc_handle
, xen_domid
, SHUTDOWN_poweroff
);
1018 fprintf(stderr
, "? xc_domain_shutdown failed to issue poweroff, "
1019 "sts %d, %s\n", sts
, strerror(errno
));
1021 fprintf(stderr
, "Issued domain %d poweroff\n", xen_domid
);
1023 xc_interface_close(xc_handle
);
1027 void xen_register_framebuffer(MemoryRegion
*mr
)