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3285cf4f AP |
1 | /* |
2 | * Copyright (C) 2010 Citrix Ltd. | |
3 | * | |
4 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
5 | * the COPYING file in the top-level directory. | |
6 | * | |
6b620ca3 PB |
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. | |
3285cf4f AP |
9 | */ |
10 | ||
9ce94e7c AS |
11 | #include <sys/mman.h> |
12 | ||
41445300 | 13 | #include "hw/pci.h" |
c9622478 | 14 | #include "hw/pc.h" |
3285cf4f AP |
15 | #include "hw/xen_common.h" |
16 | #include "hw/xen_backend.h" | |
39f42439 | 17 | #include "qmp-commands.h" |
3285cf4f | 18 | |
b4dd7802 | 19 | #include "range.h" |
432d268c JN |
20 | #include "xen-mapcache.h" |
21 | #include "trace.h" | |
ce76b8a8 | 22 | #include "exec-memory.h" |
432d268c | 23 | |
9ce94e7c AS |
24 | #include <xen/hvm/ioreq.h> |
25 | #include <xen/hvm/params.h> | |
8a369e20 | 26 | #include <xen/hvm/e820.h> |
9ce94e7c AS |
27 | |
28 | //#define DEBUG_XEN | |
29 | ||
30 | #ifdef DEBUG_XEN | |
31 | #define DPRINTF(fmt, ...) \ | |
32 | do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0) | |
33 | #else | |
34 | #define DPRINTF(fmt, ...) \ | |
35 | do { } while (0) | |
36 | #endif | |
37 | ||
ce76b8a8 | 38 | static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi; |
c65adf9b | 39 | static MemoryRegion *framebuffer; |
39f42439 | 40 | static bool xen_in_migration; |
ce76b8a8 | 41 | |
9ce94e7c AS |
42 | /* Compatibility with older version */ |
43 | #if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a | |
44 | static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i) | |
45 | { | |
46 | return shared_page->vcpu_iodata[i].vp_eport; | |
47 | } | |
48 | static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu) | |
49 | { | |
50 | return &shared_page->vcpu_iodata[vcpu].vp_ioreq; | |
51 | } | |
52 | # define FMT_ioreq_size PRIx64 | |
53 | #else | |
54 | static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i) | |
55 | { | |
56 | return shared_page->vcpu_ioreq[i].vp_eport; | |
57 | } | |
58 | static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu) | |
59 | { | |
60 | return &shared_page->vcpu_ioreq[vcpu]; | |
61 | } | |
62 | # define FMT_ioreq_size "u" | |
63 | #endif | |
fda1f768 SS |
64 | #ifndef HVM_PARAM_BUFIOREQ_EVTCHN |
65 | #define HVM_PARAM_BUFIOREQ_EVTCHN 26 | |
66 | #endif | |
9ce94e7c AS |
67 | |
68 | #define BUFFER_IO_MAX_DELAY 100 | |
69 | ||
b4dd7802 AP |
70 | typedef struct XenPhysmap { |
71 | target_phys_addr_t start_addr; | |
72 | ram_addr_t size; | |
d1814e08 | 73 | char *name; |
b4dd7802 AP |
74 | target_phys_addr_t phys_offset; |
75 | ||
76 | QLIST_ENTRY(XenPhysmap) list; | |
77 | } XenPhysmap; | |
78 | ||
9ce94e7c AS |
79 | typedef struct XenIOState { |
80 | shared_iopage_t *shared_page; | |
81 | buffered_iopage_t *buffered_io_page; | |
82 | QEMUTimer *buffered_io_timer; | |
83 | /* the evtchn port for polling the notification, */ | |
84 | evtchn_port_t *ioreq_local_port; | |
fda1f768 SS |
85 | /* evtchn local port for buffered io */ |
86 | evtchn_port_t bufioreq_local_port; | |
9ce94e7c AS |
87 | /* the evtchn fd for polling */ |
88 | XenEvtchn xce_handle; | |
89 | /* which vcpu we are serving */ | |
90 | int send_vcpu; | |
91 | ||
29321335 | 92 | struct xs_handle *xenstore; |
20581d20 | 93 | MemoryListener memory_listener; |
b4dd7802 | 94 | QLIST_HEAD(, XenPhysmap) physmap; |
20581d20 | 95 | target_phys_addr_t free_phys_offset; |
b4dd7802 | 96 | const XenPhysmap *log_for_dirtybit; |
29321335 | 97 | |
9ce94e7c | 98 | Notifier exit; |
da98c8eb | 99 | Notifier suspend; |
9ce94e7c AS |
100 | } XenIOState; |
101 | ||
41445300 AP |
102 | /* Xen specific function for piix pci */ |
103 | ||
104 | int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) | |
105 | { | |
106 | return irq_num + ((pci_dev->devfn >> 3) << 2); | |
107 | } | |
108 | ||
109 | void xen_piix3_set_irq(void *opaque, int irq_num, int level) | |
110 | { | |
111 | xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2, | |
112 | irq_num & 3, level); | |
113 | } | |
114 | ||
115 | void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) | |
116 | { | |
117 | int i; | |
118 | ||
119 | /* Scan for updates to PCI link routes (0x60-0x63). */ | |
120 | for (i = 0; i < len; i++) { | |
121 | uint8_t v = (val >> (8 * i)) & 0xff; | |
122 | if (v & 0x80) { | |
123 | v = 0; | |
124 | } | |
125 | v &= 0xf; | |
126 | if (((address + i) >= 0x60) && ((address + i) <= 0x63)) { | |
127 | xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v); | |
128 | } | |
129 | } | |
130 | } | |
131 | ||
f1dbf015 WL |
132 | void xen_hvm_inject_msi(uint64_t addr, uint32_t data) |
133 | { | |
4c9f8d1b | 134 | xen_xc_hvm_inject_msi(xen_xc, xen_domid, addr, data); |
f1dbf015 WL |
135 | } |
136 | ||
da98c8eb | 137 | static void xen_suspend_notifier(Notifier *notifier, void *data) |
c9622478 | 138 | { |
da98c8eb | 139 | xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); |
c9622478 AP |
140 | } |
141 | ||
9c11a8ac AP |
142 | /* Xen Interrupt Controller */ |
143 | ||
144 | static void xen_set_irq(void *opaque, int irq, int level) | |
145 | { | |
146 | xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level); | |
147 | } | |
148 | ||
149 | qemu_irq *xen_interrupt_controller_init(void) | |
150 | { | |
151 | return qemu_allocate_irqs(xen_set_irq, NULL, 16); | |
152 | } | |
153 | ||
432d268c JN |
154 | /* Memory Ops */ |
155 | ||
156 | static void xen_ram_init(ram_addr_t ram_size) | |
157 | { | |
ce76b8a8 | 158 | MemoryRegion *sysmem = get_system_memory(); |
432d268c | 159 | ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; |
ce76b8a8 | 160 | ram_addr_t block_len; |
432d268c | 161 | |
ce76b8a8 | 162 | block_len = ram_size; |
8a369e20 AP |
163 | if (ram_size >= HVM_BELOW_4G_RAM_END) { |
164 | /* Xen does not allocate the memory continuously, and keep a hole at | |
165 | * HVM_BELOW_4G_MMIO_START of HVM_BELOW_4G_MMIO_LENGTH | |
166 | */ | |
ce76b8a8 | 167 | block_len += HVM_BELOW_4G_MMIO_LENGTH; |
8a369e20 | 168 | } |
c5705a77 AK |
169 | memory_region_init_ram(&ram_memory, "xen.ram", block_len); |
170 | vmstate_register_ram_global(&ram_memory); | |
432d268c | 171 | |
8a369e20 AP |
172 | if (ram_size >= HVM_BELOW_4G_RAM_END) { |
173 | above_4g_mem_size = ram_size - HVM_BELOW_4G_RAM_END; | |
174 | below_4g_mem_size = HVM_BELOW_4G_RAM_END; | |
432d268c JN |
175 | } else { |
176 | below_4g_mem_size = ram_size; | |
177 | } | |
178 | ||
ce76b8a8 AK |
179 | memory_region_init_alias(&ram_640k, "xen.ram.640k", |
180 | &ram_memory, 0, 0xa0000); | |
181 | memory_region_add_subregion(sysmem, 0, &ram_640k); | |
8a369e20 AP |
182 | /* Skip of the VGA IO memory space, it will be registered later by the VGA |
183 | * emulated device. | |
184 | * | |
185 | * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load | |
186 | * the Options ROM, so it is registered here as RAM. | |
187 | */ | |
ce76b8a8 AK |
188 | memory_region_init_alias(&ram_lo, "xen.ram.lo", |
189 | &ram_memory, 0xc0000, below_4g_mem_size - 0xc0000); | |
190 | memory_region_add_subregion(sysmem, 0xc0000, &ram_lo); | |
432d268c | 191 | if (above_4g_mem_size > 0) { |
ce76b8a8 AK |
192 | memory_region_init_alias(&ram_hi, "xen.ram.hi", |
193 | &ram_memory, 0x100000000ULL, | |
194 | above_4g_mem_size); | |
195 | memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi); | |
432d268c | 196 | } |
432d268c JN |
197 | } |
198 | ||
fce537d4 | 199 | void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr) |
432d268c JN |
200 | { |
201 | unsigned long nr_pfn; | |
202 | xen_pfn_t *pfn_list; | |
203 | int i; | |
204 | ||
c234572d AP |
205 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
206 | /* RAM already populated in Xen */ | |
207 | fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT | |
208 | " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n", | |
209 | __func__, size, ram_addr); | |
210 | return; | |
211 | } | |
212 | ||
ce76b8a8 AK |
213 | if (mr == &ram_memory) { |
214 | return; | |
215 | } | |
216 | ||
432d268c JN |
217 | trace_xen_ram_alloc(ram_addr, size); |
218 | ||
219 | nr_pfn = size >> TARGET_PAGE_BITS; | |
7267c094 | 220 | pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn); |
432d268c JN |
221 | |
222 | for (i = 0; i < nr_pfn; i++) { | |
223 | pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i; | |
224 | } | |
225 | ||
226 | if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) { | |
f15fbc4b | 227 | hw_error("xen: failed to populate ram at " RAM_ADDR_FMT, ram_addr); |
432d268c JN |
228 | } |
229 | ||
7267c094 | 230 | g_free(pfn_list); |
432d268c JN |
231 | } |
232 | ||
b4dd7802 AP |
233 | static XenPhysmap *get_physmapping(XenIOState *state, |
234 | target_phys_addr_t start_addr, ram_addr_t size) | |
235 | { | |
236 | XenPhysmap *physmap = NULL; | |
237 | ||
238 | start_addr &= TARGET_PAGE_MASK; | |
239 | ||
240 | QLIST_FOREACH(physmap, &state->physmap, list) { | |
241 | if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) { | |
242 | return physmap; | |
243 | } | |
244 | } | |
245 | return NULL; | |
246 | } | |
247 | ||
cd1ba7de AP |
248 | static target_phys_addr_t xen_phys_offset_to_gaddr(target_phys_addr_t start_addr, |
249 | ram_addr_t size, void *opaque) | |
250 | { | |
251 | target_phys_addr_t addr = start_addr & TARGET_PAGE_MASK; | |
252 | XenIOState *xen_io_state = opaque; | |
253 | XenPhysmap *physmap = NULL; | |
254 | ||
255 | QLIST_FOREACH(physmap, &xen_io_state->physmap, list) { | |
256 | if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) { | |
257 | return physmap->start_addr; | |
258 | } | |
259 | } | |
260 | ||
261 | return start_addr; | |
262 | } | |
263 | ||
b4dd7802 AP |
264 | #if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340 |
265 | static int xen_add_to_physmap(XenIOState *state, | |
266 | target_phys_addr_t start_addr, | |
267 | ram_addr_t size, | |
20581d20 AK |
268 | MemoryRegion *mr, |
269 | target_phys_addr_t offset_within_region) | |
b4dd7802 AP |
270 | { |
271 | unsigned long i = 0; | |
272 | int rc = 0; | |
273 | XenPhysmap *physmap = NULL; | |
274 | target_phys_addr_t pfn, start_gpfn; | |
20581d20 | 275 | target_phys_addr_t phys_offset = memory_region_get_ram_addr(mr); |
d1814e08 | 276 | char path[80], value[17]; |
b4dd7802 AP |
277 | |
278 | if (get_physmapping(state, start_addr, size)) { | |
279 | return 0; | |
280 | } | |
281 | if (size <= 0) { | |
282 | return -1; | |
283 | } | |
284 | ||
ebed8505 SS |
285 | /* Xen can only handle a single dirty log region for now and we want |
286 | * the linear framebuffer to be that region. | |
287 | * Avoid tracking any regions that is not videoram and avoid tracking | |
288 | * the legacy vga region. */ | |
20581d20 AK |
289 | if (mr == framebuffer && start_addr > 0xbffff) { |
290 | goto go_physmap; | |
ebed8505 SS |
291 | } |
292 | return -1; | |
293 | ||
294 | go_physmap: | |
20581d20 | 295 | DPRINTF("mapping vram to %llx - %llx\n", start_addr, start_addr + size); |
b4dd7802 AP |
296 | |
297 | pfn = phys_offset >> TARGET_PAGE_BITS; | |
298 | start_gpfn = start_addr >> TARGET_PAGE_BITS; | |
299 | for (i = 0; i < size >> TARGET_PAGE_BITS; i++) { | |
300 | unsigned long idx = pfn + i; | |
301 | xen_pfn_t gpfn = start_gpfn + i; | |
302 | ||
303 | rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn); | |
304 | if (rc) { | |
305 | DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %" | |
306 | PRI_xen_pfn" failed: %d\n", idx, gpfn, rc); | |
307 | return -rc; | |
308 | } | |
309 | } | |
310 | ||
7267c094 | 311 | physmap = g_malloc(sizeof (XenPhysmap)); |
b4dd7802 AP |
312 | |
313 | physmap->start_addr = start_addr; | |
314 | physmap->size = size; | |
d1814e08 | 315 | physmap->name = (char *)mr->name; |
b4dd7802 AP |
316 | physmap->phys_offset = phys_offset; |
317 | ||
318 | QLIST_INSERT_HEAD(&state->physmap, physmap, list); | |
319 | ||
320 | xc_domain_pin_memory_cacheattr(xen_xc, xen_domid, | |
321 | start_addr >> TARGET_PAGE_BITS, | |
322 | (start_addr + size) >> TARGET_PAGE_BITS, | |
323 | XEN_DOMCTL_MEM_CACHEATTR_WB); | |
d1814e08 SS |
324 | |
325 | snprintf(path, sizeof(path), | |
326 | "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr", | |
327 | xen_domid, (uint64_t)phys_offset); | |
328 | snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr); | |
329 | if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { | |
330 | return -1; | |
331 | } | |
332 | snprintf(path, sizeof(path), | |
333 | "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size", | |
334 | xen_domid, (uint64_t)phys_offset); | |
335 | snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size); | |
336 | if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { | |
337 | return -1; | |
338 | } | |
339 | if (mr->name) { | |
340 | snprintf(path, sizeof(path), | |
341 | "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name", | |
342 | xen_domid, (uint64_t)phys_offset); | |
343 | if (!xs_write(state->xenstore, 0, path, mr->name, strlen(mr->name))) { | |
344 | return -1; | |
345 | } | |
346 | } | |
347 | ||
b4dd7802 AP |
348 | return 0; |
349 | } | |
350 | ||
351 | static int xen_remove_from_physmap(XenIOState *state, | |
352 | target_phys_addr_t start_addr, | |
353 | ram_addr_t size) | |
354 | { | |
355 | unsigned long i = 0; | |
356 | int rc = 0; | |
357 | XenPhysmap *physmap = NULL; | |
358 | target_phys_addr_t phys_offset = 0; | |
359 | ||
360 | physmap = get_physmapping(state, start_addr, size); | |
361 | if (physmap == NULL) { | |
362 | return -1; | |
363 | } | |
364 | ||
365 | phys_offset = physmap->phys_offset; | |
366 | size = physmap->size; | |
367 | ||
368 | DPRINTF("unmapping vram to %llx - %llx, from %llx\n", | |
369 | phys_offset, phys_offset + size, start_addr); | |
370 | ||
371 | size >>= TARGET_PAGE_BITS; | |
372 | start_addr >>= TARGET_PAGE_BITS; | |
373 | phys_offset >>= TARGET_PAGE_BITS; | |
374 | for (i = 0; i < size; i++) { | |
375 | unsigned long idx = start_addr + i; | |
376 | xen_pfn_t gpfn = phys_offset + i; | |
377 | ||
378 | rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn); | |
379 | if (rc) { | |
380 | fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %" | |
381 | PRI_xen_pfn" failed: %d\n", idx, gpfn, rc); | |
382 | return -rc; | |
383 | } | |
384 | } | |
385 | ||
386 | QLIST_REMOVE(physmap, list); | |
387 | if (state->log_for_dirtybit == physmap) { | |
388 | state->log_for_dirtybit = NULL; | |
389 | } | |
390 | free(physmap); | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | #else | |
396 | static int xen_add_to_physmap(XenIOState *state, | |
397 | target_phys_addr_t start_addr, | |
398 | ram_addr_t size, | |
20581d20 AK |
399 | MemoryRegion *mr, |
400 | target_phys_addr_t offset_within_region) | |
b4dd7802 AP |
401 | { |
402 | return -ENOSYS; | |
403 | } | |
404 | ||
405 | static int xen_remove_from_physmap(XenIOState *state, | |
406 | target_phys_addr_t start_addr, | |
407 | ram_addr_t size) | |
408 | { | |
409 | return -ENOSYS; | |
410 | } | |
411 | #endif | |
412 | ||
20581d20 AK |
413 | static void xen_set_memory(struct MemoryListener *listener, |
414 | MemoryRegionSection *section, | |
415 | bool add) | |
b4dd7802 | 416 | { |
20581d20 AK |
417 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
418 | target_phys_addr_t start_addr = section->offset_within_address_space; | |
419 | ram_addr_t size = section->size; | |
420 | bool log_dirty = memory_region_is_logging(section->mr); | |
b4dd7802 AP |
421 | hvmmem_type_t mem_type; |
422 | ||
20581d20 | 423 | if (!memory_region_is_ram(section->mr)) { |
b4dd7802 AP |
424 | return; |
425 | } | |
426 | ||
20581d20 AK |
427 | if (!(section->mr != &ram_memory |
428 | && ( (log_dirty && add) || (!log_dirty && !add)))) { | |
429 | return; | |
430 | } | |
431 | ||
432 | trace_xen_client_set_memory(start_addr, size, log_dirty); | |
b4dd7802 AP |
433 | |
434 | start_addr &= TARGET_PAGE_MASK; | |
435 | size = TARGET_PAGE_ALIGN(size); | |
20581d20 AK |
436 | |
437 | if (add) { | |
438 | if (!memory_region_is_rom(section->mr)) { | |
439 | xen_add_to_physmap(state, start_addr, size, | |
440 | section->mr, section->offset_within_region); | |
441 | } else { | |
442 | mem_type = HVMMEM_ram_ro; | |
443 | if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, | |
444 | start_addr >> TARGET_PAGE_BITS, | |
445 | size >> TARGET_PAGE_BITS)) { | |
446 | DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n", | |
447 | start_addr); | |
448 | } | |
b4dd7802 | 449 | } |
20581d20 | 450 | } else { |
b4dd7802 AP |
451 | if (xen_remove_from_physmap(state, start_addr, size) < 0) { |
452 | DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr); | |
453 | } | |
b4dd7802 AP |
454 | } |
455 | } | |
456 | ||
50c1e149 AK |
457 | static void xen_begin(MemoryListener *listener) |
458 | { | |
459 | } | |
460 | ||
461 | static void xen_commit(MemoryListener *listener) | |
462 | { | |
463 | } | |
464 | ||
20581d20 AK |
465 | static void xen_region_add(MemoryListener *listener, |
466 | MemoryRegionSection *section) | |
467 | { | |
468 | xen_set_memory(listener, section, true); | |
469 | } | |
470 | ||
471 | static void xen_region_del(MemoryListener *listener, | |
472 | MemoryRegionSection *section) | |
473 | { | |
474 | xen_set_memory(listener, section, false); | |
475 | } | |
476 | ||
50c1e149 AK |
477 | static void xen_region_nop(MemoryListener *listener, |
478 | MemoryRegionSection *section) | |
479 | { | |
480 | } | |
481 | ||
b18620cf AP |
482 | static void xen_sync_dirty_bitmap(XenIOState *state, |
483 | target_phys_addr_t start_addr, | |
484 | ram_addr_t size) | |
b4dd7802 AP |
485 | { |
486 | target_phys_addr_t npages = size >> TARGET_PAGE_BITS; | |
b4dd7802 AP |
487 | const int width = sizeof(unsigned long) * 8; |
488 | unsigned long bitmap[(npages + width - 1) / width]; | |
489 | int rc, i, j; | |
490 | const XenPhysmap *physmap = NULL; | |
491 | ||
492 | physmap = get_physmapping(state, start_addr, size); | |
493 | if (physmap == NULL) { | |
494 | /* not handled */ | |
b18620cf | 495 | return; |
b4dd7802 AP |
496 | } |
497 | ||
498 | if (state->log_for_dirtybit == NULL) { | |
499 | state->log_for_dirtybit = physmap; | |
500 | } else if (state->log_for_dirtybit != physmap) { | |
b18620cf AP |
501 | /* Only one range for dirty bitmap can be tracked. */ |
502 | return; | |
b4dd7802 | 503 | } |
b4dd7802 AP |
504 | |
505 | rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid, | |
506 | start_addr >> TARGET_PAGE_BITS, npages, | |
507 | bitmap); | |
b18620cf AP |
508 | if (rc < 0) { |
509 | if (rc != -ENODATA) { | |
8aba7dc0 AP |
510 | memory_region_set_dirty(framebuffer, 0, size); |
511 | DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx | |
b18620cf AP |
512 | ", 0x" TARGET_FMT_plx "): %s\n", |
513 | start_addr, start_addr + size, strerror(-rc)); | |
514 | } | |
515 | return; | |
b4dd7802 AP |
516 | } |
517 | ||
518 | for (i = 0; i < ARRAY_SIZE(bitmap); i++) { | |
519 | unsigned long map = bitmap[i]; | |
520 | while (map != 0) { | |
521 | j = ffsl(map) - 1; | |
522 | map &= ~(1ul << j); | |
5a97065b | 523 | memory_region_set_dirty(framebuffer, |
fd4aa979 BS |
524 | (i * width + j) * TARGET_PAGE_SIZE, |
525 | TARGET_PAGE_SIZE); | |
b4dd7802 AP |
526 | }; |
527 | } | |
b4dd7802 AP |
528 | } |
529 | ||
20581d20 AK |
530 | static void xen_log_start(MemoryListener *listener, |
531 | MemoryRegionSection *section) | |
b4dd7802 | 532 | { |
20581d20 | 533 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
b4dd7802 | 534 | |
b18620cf AP |
535 | xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
536 | section->size); | |
b4dd7802 AP |
537 | } |
538 | ||
20581d20 | 539 | static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section) |
b4dd7802 | 540 | { |
20581d20 | 541 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
b4dd7802 AP |
542 | |
543 | state->log_for_dirtybit = NULL; | |
544 | /* Disable dirty bit tracking */ | |
b18620cf | 545 | xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL); |
b4dd7802 AP |
546 | } |
547 | ||
20581d20 | 548 | static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section) |
b4dd7802 | 549 | { |
20581d20 | 550 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
b4dd7802 | 551 | |
b18620cf AP |
552 | xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
553 | section->size); | |
b4dd7802 AP |
554 | } |
555 | ||
20581d20 AK |
556 | static void xen_log_global_start(MemoryListener *listener) |
557 | { | |
39f42439 AP |
558 | if (xen_enabled()) { |
559 | xen_in_migration = true; | |
560 | } | |
20581d20 AK |
561 | } |
562 | ||
563 | static void xen_log_global_stop(MemoryListener *listener) | |
b4dd7802 | 564 | { |
39f42439 | 565 | xen_in_migration = false; |
b4dd7802 AP |
566 | } |
567 | ||
80a1ea37 AK |
568 | static void xen_eventfd_add(MemoryListener *listener, |
569 | MemoryRegionSection *section, | |
753d5e14 PB |
570 | bool match_data, uint64_t data, |
571 | EventNotifier *e) | |
80a1ea37 AK |
572 | { |
573 | } | |
574 | ||
575 | static void xen_eventfd_del(MemoryListener *listener, | |
576 | MemoryRegionSection *section, | |
753d5e14 PB |
577 | bool match_data, uint64_t data, |
578 | EventNotifier *e) | |
80a1ea37 AK |
579 | { |
580 | } | |
581 | ||
20581d20 | 582 | static MemoryListener xen_memory_listener = { |
50c1e149 AK |
583 | .begin = xen_begin, |
584 | .commit = xen_commit, | |
20581d20 AK |
585 | .region_add = xen_region_add, |
586 | .region_del = xen_region_del, | |
50c1e149 | 587 | .region_nop = xen_region_nop, |
b4dd7802 AP |
588 | .log_start = xen_log_start, |
589 | .log_stop = xen_log_stop, | |
20581d20 AK |
590 | .log_sync = xen_log_sync, |
591 | .log_global_start = xen_log_global_start, | |
592 | .log_global_stop = xen_log_global_stop, | |
80a1ea37 AK |
593 | .eventfd_add = xen_eventfd_add, |
594 | .eventfd_del = xen_eventfd_del, | |
72e22d2f | 595 | .priority = 10, |
b4dd7802 | 596 | }; |
432d268c | 597 | |
39f42439 AP |
598 | void qmp_xen_set_global_dirty_log(bool enable, Error **errp) |
599 | { | |
600 | if (enable) { | |
601 | memory_global_dirty_log_start(); | |
602 | } else { | |
603 | memory_global_dirty_log_stop(); | |
604 | } | |
605 | } | |
606 | ||
29d3ccde AP |
607 | /* VCPU Operations, MMIO, IO ring ... */ |
608 | ||
609 | static void xen_reset_vcpu(void *opaque) | |
610 | { | |
9349b4f9 | 611 | CPUArchState *env = opaque; |
29d3ccde AP |
612 | |
613 | env->halted = 1; | |
614 | } | |
615 | ||
616 | void xen_vcpu_init(void) | |
617 | { | |
9349b4f9 | 618 | CPUArchState *first_cpu; |
29d3ccde AP |
619 | |
620 | if ((first_cpu = qemu_get_cpu(0))) { | |
621 | qemu_register_reset(xen_reset_vcpu, first_cpu); | |
622 | xen_reset_vcpu(first_cpu); | |
623 | } | |
95d5d75e SS |
624 | /* if rtc_clock is left to default (host_clock), disable it */ |
625 | if (rtc_clock == host_clock) { | |
626 | qemu_clock_enable(rtc_clock, false); | |
627 | } | |
29d3ccde AP |
628 | } |
629 | ||
9ce94e7c AS |
630 | /* get the ioreq packets from share mem */ |
631 | static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu) | |
632 | { | |
633 | ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu); | |
634 | ||
635 | if (req->state != STATE_IOREQ_READY) { | |
636 | DPRINTF("I/O request not ready: " | |
637 | "%x, ptr: %x, port: %"PRIx64", " | |
638 | "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", | |
639 | req->state, req->data_is_ptr, req->addr, | |
640 | req->data, req->count, req->size); | |
641 | return NULL; | |
642 | } | |
643 | ||
644 | xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */ | |
645 | ||
646 | req->state = STATE_IOREQ_INPROCESS; | |
647 | return req; | |
648 | } | |
649 | ||
650 | /* use poll to get the port notification */ | |
651 | /* ioreq_vec--out,the */ | |
652 | /* retval--the number of ioreq packet */ | |
653 | static ioreq_t *cpu_get_ioreq(XenIOState *state) | |
654 | { | |
655 | int i; | |
656 | evtchn_port_t port; | |
657 | ||
658 | port = xc_evtchn_pending(state->xce_handle); | |
fda1f768 SS |
659 | if (port == state->bufioreq_local_port) { |
660 | qemu_mod_timer(state->buffered_io_timer, | |
661 | BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); | |
662 | return NULL; | |
663 | } | |
664 | ||
9ce94e7c AS |
665 | if (port != -1) { |
666 | for (i = 0; i < smp_cpus; i++) { | |
667 | if (state->ioreq_local_port[i] == port) { | |
668 | break; | |
669 | } | |
670 | } | |
671 | ||
672 | if (i == smp_cpus) { | |
673 | hw_error("Fatal error while trying to get io event!\n"); | |
674 | } | |
675 | ||
676 | /* unmask the wanted port again */ | |
677 | xc_evtchn_unmask(state->xce_handle, port); | |
678 | ||
679 | /* get the io packet from shared memory */ | |
680 | state->send_vcpu = i; | |
681 | return cpu_get_ioreq_from_shared_memory(state, i); | |
682 | } | |
683 | ||
684 | /* read error or read nothing */ | |
685 | return NULL; | |
686 | } | |
687 | ||
688 | static uint32_t do_inp(pio_addr_t addr, unsigned long size) | |
689 | { | |
690 | switch (size) { | |
691 | case 1: | |
692 | return cpu_inb(addr); | |
693 | case 2: | |
694 | return cpu_inw(addr); | |
695 | case 4: | |
696 | return cpu_inl(addr); | |
697 | default: | |
698 | hw_error("inp: bad size: %04"FMT_pioaddr" %lx", addr, size); | |
699 | } | |
700 | } | |
701 | ||
702 | static void do_outp(pio_addr_t addr, | |
703 | unsigned long size, uint32_t val) | |
704 | { | |
705 | switch (size) { | |
706 | case 1: | |
707 | return cpu_outb(addr, val); | |
708 | case 2: | |
709 | return cpu_outw(addr, val); | |
710 | case 4: | |
711 | return cpu_outl(addr, val); | |
712 | default: | |
713 | hw_error("outp: bad size: %04"FMT_pioaddr" %lx", addr, size); | |
714 | } | |
715 | } | |
716 | ||
717 | static void cpu_ioreq_pio(ioreq_t *req) | |
718 | { | |
719 | int i, sign; | |
720 | ||
721 | sign = req->df ? -1 : 1; | |
722 | ||
723 | if (req->dir == IOREQ_READ) { | |
724 | if (!req->data_is_ptr) { | |
725 | req->data = do_inp(req->addr, req->size); | |
726 | } else { | |
727 | uint32_t tmp; | |
728 | ||
729 | for (i = 0; i < req->count; i++) { | |
730 | tmp = do_inp(req->addr, req->size); | |
14d40183 DX |
731 | cpu_physical_memory_write( |
732 | req->data + (sign * i * (int64_t)req->size), | |
9ce94e7c AS |
733 | (uint8_t *) &tmp, req->size); |
734 | } | |
735 | } | |
736 | } else if (req->dir == IOREQ_WRITE) { | |
737 | if (!req->data_is_ptr) { | |
738 | do_outp(req->addr, req->size, req->data); | |
739 | } else { | |
740 | for (i = 0; i < req->count; i++) { | |
741 | uint32_t tmp = 0; | |
742 | ||
14d40183 DX |
743 | cpu_physical_memory_read( |
744 | req->data + (sign * i * (int64_t)req->size), | |
9ce94e7c AS |
745 | (uint8_t*) &tmp, req->size); |
746 | do_outp(req->addr, req->size, tmp); | |
747 | } | |
748 | } | |
749 | } | |
750 | } | |
751 | ||
752 | static void cpu_ioreq_move(ioreq_t *req) | |
753 | { | |
754 | int i, sign; | |
755 | ||
756 | sign = req->df ? -1 : 1; | |
757 | ||
758 | if (!req->data_is_ptr) { | |
759 | if (req->dir == IOREQ_READ) { | |
760 | for (i = 0; i < req->count; i++) { | |
14d40183 DX |
761 | cpu_physical_memory_read( |
762 | req->addr + (sign * i * (int64_t)req->size), | |
9ce94e7c AS |
763 | (uint8_t *) &req->data, req->size); |
764 | } | |
765 | } else if (req->dir == IOREQ_WRITE) { | |
766 | for (i = 0; i < req->count; i++) { | |
14d40183 DX |
767 | cpu_physical_memory_write( |
768 | req->addr + (sign * i * (int64_t)req->size), | |
9ce94e7c AS |
769 | (uint8_t *) &req->data, req->size); |
770 | } | |
771 | } | |
772 | } else { | |
2b734340 | 773 | uint64_t tmp; |
9ce94e7c AS |
774 | |
775 | if (req->dir == IOREQ_READ) { | |
776 | for (i = 0; i < req->count; i++) { | |
14d40183 DX |
777 | cpu_physical_memory_read( |
778 | req->addr + (sign * i * (int64_t)req->size), | |
9ce94e7c | 779 | (uint8_t*) &tmp, req->size); |
14d40183 DX |
780 | cpu_physical_memory_write( |
781 | req->data + (sign * i * (int64_t)req->size), | |
9ce94e7c AS |
782 | (uint8_t*) &tmp, req->size); |
783 | } | |
784 | } else if (req->dir == IOREQ_WRITE) { | |
785 | for (i = 0; i < req->count; i++) { | |
14d40183 DX |
786 | cpu_physical_memory_read( |
787 | req->data + (sign * i * (int64_t)req->size), | |
9ce94e7c | 788 | (uint8_t*) &tmp, req->size); |
14d40183 DX |
789 | cpu_physical_memory_write( |
790 | req->addr + (sign * i * (int64_t)req->size), | |
9ce94e7c AS |
791 | (uint8_t*) &tmp, req->size); |
792 | } | |
793 | } | |
794 | } | |
795 | } | |
796 | ||
797 | static void handle_ioreq(ioreq_t *req) | |
798 | { | |
799 | if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) && | |
800 | (req->size < sizeof (target_ulong))) { | |
801 | req->data &= ((target_ulong) 1 << (8 * req->size)) - 1; | |
802 | } | |
803 | ||
804 | switch (req->type) { | |
805 | case IOREQ_TYPE_PIO: | |
806 | cpu_ioreq_pio(req); | |
807 | break; | |
808 | case IOREQ_TYPE_COPY: | |
809 | cpu_ioreq_move(req); | |
810 | break; | |
811 | case IOREQ_TYPE_TIMEOFFSET: | |
812 | break; | |
813 | case IOREQ_TYPE_INVALIDATE: | |
e41d7c69 | 814 | xen_invalidate_map_cache(); |
9ce94e7c AS |
815 | break; |
816 | default: | |
817 | hw_error("Invalid ioreq type 0x%x\n", req->type); | |
818 | } | |
819 | } | |
820 | ||
fda1f768 | 821 | static int handle_buffered_iopage(XenIOState *state) |
9ce94e7c AS |
822 | { |
823 | buf_ioreq_t *buf_req = NULL; | |
824 | ioreq_t req; | |
825 | int qw; | |
826 | ||
827 | if (!state->buffered_io_page) { | |
fda1f768 | 828 | return 0; |
9ce94e7c AS |
829 | } |
830 | ||
fda1f768 SS |
831 | memset(&req, 0x00, sizeof(req)); |
832 | ||
9ce94e7c AS |
833 | while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) { |
834 | buf_req = &state->buffered_io_page->buf_ioreq[ | |
835 | state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM]; | |
836 | req.size = 1UL << buf_req->size; | |
837 | req.count = 1; | |
838 | req.addr = buf_req->addr; | |
839 | req.data = buf_req->data; | |
840 | req.state = STATE_IOREQ_READY; | |
841 | req.dir = buf_req->dir; | |
842 | req.df = 1; | |
843 | req.type = buf_req->type; | |
844 | req.data_is_ptr = 0; | |
845 | qw = (req.size == 8); | |
846 | if (qw) { | |
847 | buf_req = &state->buffered_io_page->buf_ioreq[ | |
848 | (state->buffered_io_page->read_pointer + 1) % IOREQ_BUFFER_SLOT_NUM]; | |
849 | req.data |= ((uint64_t)buf_req->data) << 32; | |
850 | } | |
851 | ||
852 | handle_ioreq(&req); | |
853 | ||
854 | xen_mb(); | |
855 | state->buffered_io_page->read_pointer += qw ? 2 : 1; | |
856 | } | |
fda1f768 SS |
857 | |
858 | return req.count; | |
9ce94e7c AS |
859 | } |
860 | ||
861 | static void handle_buffered_io(void *opaque) | |
862 | { | |
863 | XenIOState *state = opaque; | |
864 | ||
fda1f768 SS |
865 | if (handle_buffered_iopage(state)) { |
866 | qemu_mod_timer(state->buffered_io_timer, | |
867 | BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); | |
868 | } else { | |
869 | qemu_del_timer(state->buffered_io_timer); | |
870 | xc_evtchn_unmask(state->xce_handle, state->bufioreq_local_port); | |
871 | } | |
9ce94e7c AS |
872 | } |
873 | ||
874 | static void cpu_handle_ioreq(void *opaque) | |
875 | { | |
876 | XenIOState *state = opaque; | |
877 | ioreq_t *req = cpu_get_ioreq(state); | |
878 | ||
879 | handle_buffered_iopage(state); | |
880 | if (req) { | |
881 | handle_ioreq(req); | |
882 | ||
883 | if (req->state != STATE_IOREQ_INPROCESS) { | |
884 | fprintf(stderr, "Badness in I/O request ... not in service?!: " | |
885 | "%x, ptr: %x, port: %"PRIx64", " | |
886 | "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", | |
887 | req->state, req->data_is_ptr, req->addr, | |
888 | req->data, req->count, req->size); | |
180640ea | 889 | destroy_hvm_domain(false); |
9ce94e7c AS |
890 | return; |
891 | } | |
892 | ||
893 | xen_wmb(); /* Update ioreq contents /then/ update state. */ | |
894 | ||
895 | /* | |
896 | * We do this before we send the response so that the tools | |
897 | * have the opportunity to pick up on the reset before the | |
898 | * guest resumes and does a hlt with interrupts disabled which | |
899 | * causes Xen to powerdown the domain. | |
900 | */ | |
1354869c | 901 | if (runstate_is_running()) { |
9ce94e7c | 902 | if (qemu_shutdown_requested_get()) { |
180640ea | 903 | destroy_hvm_domain(false); |
9ce94e7c AS |
904 | } |
905 | if (qemu_reset_requested_get()) { | |
e063eb1f | 906 | qemu_system_reset(VMRESET_REPORT); |
180640ea | 907 | destroy_hvm_domain(true); |
9ce94e7c AS |
908 | } |
909 | } | |
910 | ||
911 | req->state = STATE_IORESP_READY; | |
912 | xc_evtchn_notify(state->xce_handle, state->ioreq_local_port[state->send_vcpu]); | |
913 | } | |
914 | } | |
915 | ||
0f51726a SS |
916 | static int store_dev_info(int domid, CharDriverState *cs, const char *string) |
917 | { | |
918 | struct xs_handle *xs = NULL; | |
919 | char *path = NULL; | |
920 | char *newpath = NULL; | |
921 | char *pts = NULL; | |
922 | int ret = -1; | |
923 | ||
924 | /* Only continue if we're talking to a pty. */ | |
925 | if (strncmp(cs->filename, "pty:", 4)) { | |
926 | return 0; | |
927 | } | |
928 | pts = cs->filename + 4; | |
929 | ||
930 | /* We now have everything we need to set the xenstore entry. */ | |
931 | xs = xs_open(0); | |
932 | if (xs == NULL) { | |
933 | fprintf(stderr, "Could not contact XenStore\n"); | |
934 | goto out; | |
935 | } | |
936 | ||
937 | path = xs_get_domain_path(xs, domid); | |
938 | if (path == NULL) { | |
939 | fprintf(stderr, "xs_get_domain_path() error\n"); | |
940 | goto out; | |
941 | } | |
942 | newpath = realloc(path, (strlen(path) + strlen(string) + | |
943 | strlen("/tty") + 1)); | |
944 | if (newpath == NULL) { | |
945 | fprintf(stderr, "realloc error\n"); | |
946 | goto out; | |
947 | } | |
948 | path = newpath; | |
949 | ||
950 | strcat(path, string); | |
951 | strcat(path, "/tty"); | |
952 | if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) { | |
953 | fprintf(stderr, "xs_write for '%s' fail", string); | |
954 | goto out; | |
955 | } | |
956 | ret = 0; | |
957 | ||
958 | out: | |
959 | free(path); | |
960 | xs_close(xs); | |
961 | ||
962 | return ret; | |
963 | } | |
964 | ||
965 | void xenstore_store_pv_console_info(int i, CharDriverState *chr) | |
966 | { | |
967 | if (i == 0) { | |
968 | store_dev_info(xen_domid, chr, "/console"); | |
969 | } else { | |
970 | char buf[32]; | |
971 | snprintf(buf, sizeof(buf), "/device/console/%d", i); | |
972 | store_dev_info(xen_domid, chr, buf); | |
973 | } | |
974 | } | |
975 | ||
fb4bb2b5 | 976 | static void xenstore_record_dm_state(struct xs_handle *xs, const char *state) |
29321335 AP |
977 | { |
978 | char path[50]; | |
979 | ||
fb4bb2b5 AP |
980 | if (xs == NULL) { |
981 | fprintf(stderr, "xenstore connection not initialized\n"); | |
982 | exit(1); | |
983 | } | |
984 | ||
29321335 | 985 | snprintf(path, sizeof (path), "/local/domain/0/device-model/%u/state", xen_domid); |
fb4bb2b5 | 986 | if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) { |
29321335 AP |
987 | fprintf(stderr, "error recording dm state\n"); |
988 | exit(1); | |
989 | } | |
990 | } | |
991 | ||
9ce94e7c AS |
992 | static void xen_main_loop_prepare(XenIOState *state) |
993 | { | |
994 | int evtchn_fd = -1; | |
995 | ||
996 | if (state->xce_handle != XC_HANDLER_INITIAL_VALUE) { | |
997 | evtchn_fd = xc_evtchn_fd(state->xce_handle); | |
998 | } | |
999 | ||
1000 | state->buffered_io_timer = qemu_new_timer_ms(rt_clock, handle_buffered_io, | |
1001 | state); | |
9ce94e7c AS |
1002 | |
1003 | if (evtchn_fd != -1) { | |
1004 | qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state); | |
1005 | } | |
1006 | } | |
1007 | ||
1008 | ||
3285cf4f AP |
1009 | /* Initialise Xen */ |
1010 | ||
1dfb4dd9 LC |
1011 | static void xen_change_state_handler(void *opaque, int running, |
1012 | RunState state) | |
fb4bb2b5 AP |
1013 | { |
1014 | if (running) { | |
1015 | /* record state running */ | |
1016 | xenstore_record_dm_state(xenstore, "running"); | |
1017 | } | |
1018 | } | |
1019 | ||
1dfb4dd9 LC |
1020 | static void xen_hvm_change_state_handler(void *opaque, int running, |
1021 | RunState rstate) | |
9ce94e7c | 1022 | { |
1dfb4dd9 | 1023 | XenIOState *xstate = opaque; |
9ce94e7c | 1024 | if (running) { |
1dfb4dd9 | 1025 | xen_main_loop_prepare(xstate); |
9ce94e7c AS |
1026 | } |
1027 | } | |
1028 | ||
9e8dd451 | 1029 | static void xen_exit_notifier(Notifier *n, void *data) |
9ce94e7c AS |
1030 | { |
1031 | XenIOState *state = container_of(n, XenIOState, exit); | |
1032 | ||
1033 | xc_evtchn_close(state->xce_handle); | |
29321335 | 1034 | xs_daemon_close(state->xenstore); |
9ce94e7c AS |
1035 | } |
1036 | ||
3285cf4f AP |
1037 | int xen_init(void) |
1038 | { | |
1039 | xen_xc = xen_xc_interface_open(0, 0, 0); | |
1040 | if (xen_xc == XC_HANDLER_INITIAL_VALUE) { | |
1041 | xen_be_printf(NULL, 0, "can't open xen interface\n"); | |
1042 | return -1; | |
1043 | } | |
fb4bb2b5 | 1044 | qemu_add_vm_change_state_handler(xen_change_state_handler, NULL); |
3285cf4f AP |
1045 | |
1046 | return 0; | |
1047 | } | |
29d3ccde | 1048 | |
d1814e08 SS |
1049 | static void xen_read_physmap(XenIOState *state) |
1050 | { | |
1051 | XenPhysmap *physmap = NULL; | |
1052 | unsigned int len, num, i; | |
1053 | char path[80], *value = NULL; | |
1054 | char **entries = NULL; | |
1055 | ||
1056 | snprintf(path, sizeof(path), | |
1057 | "/local/domain/0/device-model/%d/physmap", xen_domid); | |
1058 | entries = xs_directory(state->xenstore, 0, path, &num); | |
1059 | if (entries == NULL) | |
1060 | return; | |
1061 | ||
1062 | for (i = 0; i < num; i++) { | |
1063 | physmap = g_malloc(sizeof (XenPhysmap)); | |
1064 | physmap->phys_offset = strtoull(entries[i], NULL, 16); | |
1065 | snprintf(path, sizeof(path), | |
1066 | "/local/domain/0/device-model/%d/physmap/%s/start_addr", | |
1067 | xen_domid, entries[i]); | |
1068 | value = xs_read(state->xenstore, 0, path, &len); | |
1069 | if (value == NULL) { | |
1070 | free(physmap); | |
1071 | continue; | |
1072 | } | |
1073 | physmap->start_addr = strtoull(value, NULL, 16); | |
1074 | free(value); | |
1075 | ||
1076 | snprintf(path, sizeof(path), | |
1077 | "/local/domain/0/device-model/%d/physmap/%s/size", | |
1078 | xen_domid, entries[i]); | |
1079 | value = xs_read(state->xenstore, 0, path, &len); | |
1080 | if (value == NULL) { | |
1081 | free(physmap); | |
1082 | continue; | |
1083 | } | |
1084 | physmap->size = strtoull(value, NULL, 16); | |
1085 | free(value); | |
1086 | ||
1087 | snprintf(path, sizeof(path), | |
1088 | "/local/domain/0/device-model/%d/physmap/%s/name", | |
1089 | xen_domid, entries[i]); | |
1090 | physmap->name = xs_read(state->xenstore, 0, path, &len); | |
1091 | ||
1092 | QLIST_INSERT_HEAD(&state->physmap, physmap, list); | |
1093 | } | |
1094 | free(entries); | |
d1814e08 SS |
1095 | } |
1096 | ||
29d3ccde AP |
1097 | int xen_hvm_init(void) |
1098 | { | |
9ce94e7c AS |
1099 | int i, rc; |
1100 | unsigned long ioreq_pfn; | |
fda1f768 | 1101 | unsigned long bufioreq_evtchn; |
9ce94e7c AS |
1102 | XenIOState *state; |
1103 | ||
7267c094 | 1104 | state = g_malloc0(sizeof (XenIOState)); |
9ce94e7c AS |
1105 | |
1106 | state->xce_handle = xen_xc_evtchn_open(NULL, 0); | |
1107 | if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) { | |
1108 | perror("xen: event channel open"); | |
1109 | return -errno; | |
1110 | } | |
1111 | ||
29321335 AP |
1112 | state->xenstore = xs_daemon_open(); |
1113 | if (state->xenstore == NULL) { | |
1114 | perror("xen: xenstore open"); | |
1115 | return -errno; | |
1116 | } | |
1117 | ||
9ce94e7c AS |
1118 | state->exit.notify = xen_exit_notifier; |
1119 | qemu_add_exit_notifier(&state->exit); | |
1120 | ||
da98c8eb GH |
1121 | state->suspend.notify = xen_suspend_notifier; |
1122 | qemu_register_suspend_notifier(&state->suspend); | |
1123 | ||
9ce94e7c AS |
1124 | xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn); |
1125 | DPRINTF("shared page at pfn %lx\n", ioreq_pfn); | |
1126 | state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, | |
1127 | PROT_READ|PROT_WRITE, ioreq_pfn); | |
1128 | if (state->shared_page == NULL) { | |
1129 | hw_error("map shared IO page returned error %d handle=" XC_INTERFACE_FMT, | |
1130 | errno, xen_xc); | |
1131 | } | |
1132 | ||
1133 | xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_PFN, &ioreq_pfn); | |
1134 | DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn); | |
1135 | state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, | |
1136 | PROT_READ|PROT_WRITE, ioreq_pfn); | |
1137 | if (state->buffered_io_page == NULL) { | |
1138 | hw_error("map buffered IO page returned error %d", errno); | |
1139 | } | |
1140 | ||
7267c094 | 1141 | state->ioreq_local_port = g_malloc0(smp_cpus * sizeof (evtchn_port_t)); |
9ce94e7c AS |
1142 | |
1143 | /* FIXME: how about if we overflow the page here? */ | |
1144 | for (i = 0; i < smp_cpus; i++) { | |
1145 | rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid, | |
1146 | xen_vcpu_eport(state->shared_page, i)); | |
1147 | if (rc == -1) { | |
1148 | fprintf(stderr, "bind interdomain ioctl error %d\n", errno); | |
1149 | return -1; | |
1150 | } | |
1151 | state->ioreq_local_port[i] = rc; | |
1152 | } | |
1153 | ||
fda1f768 SS |
1154 | rc = xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN, |
1155 | &bufioreq_evtchn); | |
1156 | if (rc < 0) { | |
1157 | fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n"); | |
1158 | return -1; | |
1159 | } | |
1160 | rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid, | |
1161 | (uint32_t)bufioreq_evtchn); | |
1162 | if (rc == -1) { | |
1163 | fprintf(stderr, "bind interdomain ioctl error %d\n", errno); | |
1164 | return -1; | |
1165 | } | |
1166 | state->bufioreq_local_port = rc; | |
1167 | ||
432d268c | 1168 | /* Init RAM management */ |
cd1ba7de | 1169 | xen_map_cache_init(xen_phys_offset_to_gaddr, state); |
432d268c JN |
1170 | xen_ram_init(ram_size); |
1171 | ||
fb4bb2b5 | 1172 | qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state); |
9ce94e7c | 1173 | |
20581d20 | 1174 | state->memory_listener = xen_memory_listener; |
b4dd7802 | 1175 | QLIST_INIT(&state->physmap); |
947f562c | 1176 | memory_listener_register(&state->memory_listener, get_system_memory()); |
b4dd7802 AP |
1177 | state->log_for_dirtybit = NULL; |
1178 | ||
ad35a7da SS |
1179 | /* Initialize backend core & drivers */ |
1180 | if (xen_be_init() != 0) { | |
1181 | fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__); | |
1182 | exit(1); | |
1183 | } | |
1184 | xen_be_register("console", &xen_console_ops); | |
37cdfcf1 | 1185 | xen_be_register("vkbd", &xen_kbdmouse_ops); |
ad35a7da | 1186 | xen_be_register("qdisk", &xen_blkdev_ops); |
d1814e08 | 1187 | xen_read_physmap(state); |
ad35a7da | 1188 | |
29d3ccde AP |
1189 | return 0; |
1190 | } | |
9ce94e7c | 1191 | |
180640ea | 1192 | void destroy_hvm_domain(bool reboot) |
9ce94e7c AS |
1193 | { |
1194 | XenXC xc_handle; | |
1195 | int sts; | |
1196 | ||
1197 | xc_handle = xen_xc_interface_open(0, 0, 0); | |
1198 | if (xc_handle == XC_HANDLER_INITIAL_VALUE) { | |
1199 | fprintf(stderr, "Cannot acquire xenctrl handle\n"); | |
1200 | } else { | |
180640ea JB |
1201 | sts = xc_domain_shutdown(xc_handle, xen_domid, |
1202 | reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff); | |
9ce94e7c | 1203 | if (sts != 0) { |
180640ea JB |
1204 | fprintf(stderr, "xc_domain_shutdown failed to issue %s, " |
1205 | "sts %d, %s\n", reboot ? "reboot" : "poweroff", | |
1206 | sts, strerror(errno)); | |
9ce94e7c | 1207 | } else { |
180640ea JB |
1208 | fprintf(stderr, "Issued domain %d %s\n", xen_domid, |
1209 | reboot ? "reboot" : "poweroff"); | |
9ce94e7c AS |
1210 | } |
1211 | xc_interface_close(xc_handle); | |
1212 | } | |
1213 | } | |
c65adf9b AK |
1214 | |
1215 | void xen_register_framebuffer(MemoryRegion *mr) | |
1216 | { | |
1217 | framebuffer = mr; | |
1218 | } | |
eaab4d60 AK |
1219 | |
1220 | void xen_shutdown_fatal_error(const char *fmt, ...) | |
1221 | { | |
1222 | va_list ap; | |
1223 | ||
1224 | va_start(ap, fmt); | |
1225 | vfprintf(stderr, fmt, ap); | |
1226 | va_end(ap); | |
1227 | fprintf(stderr, "Will destroy the domain.\n"); | |
1228 | /* destroy the domain */ | |
1229 | qemu_system_shutdown_request(); | |
1230 | } | |
910b38e4 AP |
1231 | |
1232 | void xen_modified_memory(ram_addr_t start, ram_addr_t length) | |
1233 | { | |
1234 | if (unlikely(xen_in_migration)) { | |
1235 | int rc; | |
1236 | ram_addr_t start_pfn, nb_pages; | |
1237 | ||
1238 | if (length == 0) { | |
1239 | length = TARGET_PAGE_SIZE; | |
1240 | } | |
1241 | start_pfn = start >> TARGET_PAGE_BITS; | |
1242 | nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS) | |
1243 | - start_pfn; | |
1244 | rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages); | |
1245 | if (rc) { | |
1246 | fprintf(stderr, | |
1247 | "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n", | |
1248 | __func__, start, nb_pages, rc, strerror(-rc)); | |
1249 | } | |
1250 | } | |
1251 | } |