blob: b11542c3e7b2ca480ae9961ff9949f793a431c8f [file] [log] [blame]
Anthony PERARD3285cf42010-08-19 12:27:56 +01001/*
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 *
Paolo Bonzini6b620ca2012-01-13 17:44:23 +01007 * Contributions after 2012-01-13 are licensed under the terms of the
8 * GNU GPL, version 2 or (at your option) any later version.
Anthony PERARD3285cf42010-08-19 12:27:56 +01009 */
10
Arun Sharma9ce94e72010-09-06 20:07:14 +010011#include <sys/mman.h>
12
Anthony PERARD41445302010-07-16 14:55:39 +010013#include "hw/pci.h"
Anthony PERARDc9622472010-10-05 16:40:22 +010014#include "hw/pc.h"
Anthony PERARD3285cf42010-08-19 12:27:56 +010015#include "hw/xen_common.h"
16#include "hw/xen_backend.h"
Anthony PERARD39f42432012-10-03 13:48:19 +000017#include "qmp-commands.h"
Anthony PERARD3285cf42010-08-19 12:27:56 +010018
Anthony PERARDb4dd7802011-05-24 14:34:21 +010019#include "range.h"
Jun Nakajima432d2682010-08-31 16:41:25 +010020#include "xen-mapcache.h"
21#include "trace.h"
Avi Kivityce76b8a2011-12-18 16:27:48 +020022#include "exec-memory.h"
Jun Nakajima432d2682010-08-31 16:41:25 +010023
Arun Sharma9ce94e72010-09-06 20:07:14 +010024#include <xen/hvm/ioreq.h>
25#include <xen/hvm/params.h>
Anthony PERARD8a369e22011-07-20 08:17:43 +000026#include <xen/hvm/e820.h>
Arun Sharma9ce94e72010-09-06 20:07:14 +010027
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
Avi Kivityce76b8a2011-12-18 16:27:48 +020038static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
Avi Kivityc65adf92011-12-18 16:40:50 +020039static MemoryRegion *framebuffer;
Anthony PERARD39f42432012-10-03 13:48:19 +000040static bool xen_in_migration;
Avi Kivityce76b8a2011-12-18 16:27:48 +020041
Arun Sharma9ce94e72010-09-06 20:07:14 +010042/* Compatibility with older version */
43#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
44static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
45{
46 return shared_page->vcpu_iodata[i].vp_eport;
47}
48static 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
54static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
55{
56 return shared_page->vcpu_ioreq[i].vp_eport;
57}
58static 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
Stefano Stabellinifda1f762012-04-13 17:46:01 +000064#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
65#define HVM_PARAM_BUFIOREQ_EVTCHN 26
66#endif
Arun Sharma9ce94e72010-09-06 20:07:14 +010067
68#define BUFFER_IO_MAX_DELAY 100
69
Anthony PERARDb4dd7802011-05-24 14:34:21 +010070typedef struct XenPhysmap {
71 target_phys_addr_t start_addr;
72 ram_addr_t size;
Stefano Stabellinid1814e02012-01-19 15:56:11 +000073 char *name;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010074 target_phys_addr_t phys_offset;
75
76 QLIST_ENTRY(XenPhysmap) list;
77} XenPhysmap;
78
Arun Sharma9ce94e72010-09-06 20:07:14 +010079typedef 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;
Stefano Stabellinifda1f762012-04-13 17:46:01 +000085 /* evtchn local port for buffered io */
86 evtchn_port_t bufioreq_local_port;
Arun Sharma9ce94e72010-09-06 20:07:14 +010087 /* the evtchn fd for polling */
88 XenEvtchn xce_handle;
89 /* which vcpu we are serving */
90 int send_vcpu;
91
Anthony PERARD29321332010-09-06 20:07:33 +010092 struct xs_handle *xenstore;
Avi Kivity20581d22011-12-19 12:07:50 +020093 MemoryListener memory_listener;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010094 QLIST_HEAD(, XenPhysmap) physmap;
Avi Kivity20581d22011-12-19 12:07:50 +020095 target_phys_addr_t free_phys_offset;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010096 const XenPhysmap *log_for_dirtybit;
Anthony PERARD29321332010-09-06 20:07:33 +010097
Arun Sharma9ce94e72010-09-06 20:07:14 +010098 Notifier exit;
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +010099 Notifier suspend;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100100} XenIOState;
101
Anthony PERARD41445302010-07-16 14:55:39 +0100102/* Xen specific function for piix pci */
103
104int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
105{
106 return irq_num + ((pci_dev->devfn >> 3) << 2);
107}
108
109void 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
115void 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
Wei Liuf1dbf012012-04-12 10:01:43 +0000132void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
133{
Stefano Stabellini4c9f8d12012-04-17 16:56:51 +0000134 xen_xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
Wei Liuf1dbf012012-04-12 10:01:43 +0000135}
136
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100137static void xen_suspend_notifier(Notifier *notifier, void *data)
Anthony PERARDc9622472010-10-05 16:40:22 +0100138{
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100139 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
Anthony PERARDc9622472010-10-05 16:40:22 +0100140}
141
Anthony PERARD9c11a8a2010-06-30 17:50:10 +0100142/* Xen Interrupt Controller */
143
144static 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
149qemu_irq *xen_interrupt_controller_init(void)
150{
151 return qemu_allocate_irqs(xen_set_irq, NULL, 16);
152}
153
Jun Nakajima432d2682010-08-31 16:41:25 +0100154/* Memory Ops */
155
156static void xen_ram_init(ram_addr_t ram_size)
157{
Avi Kivityce76b8a2011-12-18 16:27:48 +0200158 MemoryRegion *sysmem = get_system_memory();
Jun Nakajima432d2682010-08-31 16:41:25 +0100159 ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
Avi Kivityce76b8a2011-12-18 16:27:48 +0200160 ram_addr_t block_len;
Jun Nakajima432d2682010-08-31 16:41:25 +0100161
Avi Kivityce76b8a2011-12-18 16:27:48 +0200162 block_len = ram_size;
Anthony PERARD8a369e22011-07-20 08:17:43 +0000163 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 */
Avi Kivityce76b8a2011-12-18 16:27:48 +0200167 block_len += HVM_BELOW_4G_MMIO_LENGTH;
Anthony PERARD8a369e22011-07-20 08:17:43 +0000168 }
Avi Kivityc5705a72011-12-20 15:59:12 +0200169 memory_region_init_ram(&ram_memory, "xen.ram", block_len);
170 vmstate_register_ram_global(&ram_memory);
Jun Nakajima432d2682010-08-31 16:41:25 +0100171
Anthony PERARD8a369e22011-07-20 08:17:43 +0000172 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;
Jun Nakajima432d2682010-08-31 16:41:25 +0100175 } else {
176 below_4g_mem_size = ram_size;
177 }
178
Avi Kivityce76b8a2011-12-18 16:27:48 +0200179 memory_region_init_alias(&ram_640k, "xen.ram.640k",
180 &ram_memory, 0, 0xa0000);
181 memory_region_add_subregion(sysmem, 0, &ram_640k);
Anthony PERARD8a369e22011-07-20 08:17:43 +0000182 /* 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 */
Avi Kivityce76b8a2011-12-18 16:27:48 +0200188 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);
Jun Nakajima432d2682010-08-31 16:41:25 +0100191 if (above_4g_mem_size > 0) {
Avi Kivityce76b8a2011-12-18 16:27:48 +0200192 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);
Jun Nakajima432d2682010-08-31 16:41:25 +0100196 }
Jun Nakajima432d2682010-08-31 16:41:25 +0100197}
198
Avi Kivityfce537d2011-12-18 15:48:55 +0200199void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr)
Jun Nakajima432d2682010-08-31 16:41:25 +0100200{
201 unsigned long nr_pfn;
202 xen_pfn_t *pfn_list;
203 int i;
204
Anthony PERARDc2345722012-01-25 12:36:06 +0000205 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
Avi Kivityce76b8a2011-12-18 16:27:48 +0200213 if (mr == &ram_memory) {
214 return;
215 }
216
Jun Nakajima432d2682010-08-31 16:41:25 +0100217 trace_xen_ram_alloc(ram_addr, size);
218
219 nr_pfn = size >> TARGET_PAGE_BITS;
Anthony Liguori7267c092011-08-20 22:09:37 -0500220 pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
Jun Nakajima432d2682010-08-31 16:41:25 +0100221
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)) {
Anthony PERARDf15fbc42011-07-20 08:17:42 +0000227 hw_error("xen: failed to populate ram at " RAM_ADDR_FMT, ram_addr);
Jun Nakajima432d2682010-08-31 16:41:25 +0100228 }
229
Anthony Liguori7267c092011-08-20 22:09:37 -0500230 g_free(pfn_list);
Jun Nakajima432d2682010-08-31 16:41:25 +0100231}
232
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100233static 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
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +0000248static 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
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100264#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340
265static int xen_add_to_physmap(XenIOState *state,
266 target_phys_addr_t start_addr,
267 ram_addr_t size,
Avi Kivity20581d22011-12-19 12:07:50 +0200268 MemoryRegion *mr,
269 target_phys_addr_t offset_within_region)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100270{
271 unsigned long i = 0;
272 int rc = 0;
273 XenPhysmap *physmap = NULL;
274 target_phys_addr_t pfn, start_gpfn;
Avi Kivity20581d22011-12-19 12:07:50 +0200275 target_phys_addr_t phys_offset = memory_region_get_ram_addr(mr);
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000276 char path[80], value[17];
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100277
278 if (get_physmapping(state, start_addr, size)) {
279 return 0;
280 }
281 if (size <= 0) {
282 return -1;
283 }
284
Stefano Stabelliniebed8502011-06-15 17:29:27 +0100285 /* 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. */
Avi Kivity20581d22011-12-19 12:07:50 +0200289 if (mr == framebuffer && start_addr > 0xbffff) {
290 goto go_physmap;
Stefano Stabelliniebed8502011-06-15 17:29:27 +0100291 }
292 return -1;
293
294go_physmap:
Avi Kivity20581d22011-12-19 12:07:50 +0200295 DPRINTF("mapping vram to %llx - %llx\n", start_addr, start_addr + size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100296
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
Anthony Liguori7267c092011-08-20 22:09:37 -0500311 physmap = g_malloc(sizeof (XenPhysmap));
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100312
313 physmap->start_addr = start_addr;
314 physmap->size = size;
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000315 physmap->name = (char *)mr->name;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100316 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);
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000324
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
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100348 return 0;
349}
350
351static 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
396static int xen_add_to_physmap(XenIOState *state,
397 target_phys_addr_t start_addr,
398 ram_addr_t size,
Avi Kivity20581d22011-12-19 12:07:50 +0200399 MemoryRegion *mr,
400 target_phys_addr_t offset_within_region)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100401{
402 return -ENOSYS;
403}
404
405static 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
Avi Kivity20581d22011-12-19 12:07:50 +0200413static void xen_set_memory(struct MemoryListener *listener,
414 MemoryRegionSection *section,
415 bool add)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100416{
Avi Kivity20581d22011-12-19 12:07:50 +0200417 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);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100421 hvmmem_type_t mem_type;
422
Avi Kivity20581d22011-12-19 12:07:50 +0200423 if (!memory_region_is_ram(section->mr)) {
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100424 return;
425 }
426
Avi Kivity20581d22011-12-19 12:07:50 +0200427 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);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100433
434 start_addr &= TARGET_PAGE_MASK;
435 size = TARGET_PAGE_ALIGN(size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100436
Avi Kivity20581d22011-12-19 12:07:50 +0200437 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 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100449 }
Avi Kivity20581d22011-12-19 12:07:50 +0200450 } else {
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100451 if (xen_remove_from_physmap(state, start_addr, size) < 0) {
452 DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
453 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100454 }
455}
456
Avi Kivity50c1e142012-02-08 21:36:02 +0200457static void xen_begin(MemoryListener *listener)
458{
459}
460
461static void xen_commit(MemoryListener *listener)
462{
463}
464
Avi Kivity20581d22011-12-19 12:07:50 +0200465static void xen_region_add(MemoryListener *listener,
466 MemoryRegionSection *section)
467{
468 xen_set_memory(listener, section, true);
469}
470
471static void xen_region_del(MemoryListener *listener,
472 MemoryRegionSection *section)
473{
474 xen_set_memory(listener, section, false);
475}
476
Avi Kivity50c1e142012-02-08 21:36:02 +0200477static void xen_region_nop(MemoryListener *listener,
478 MemoryRegionSection *section)
479{
480}
481
Anthony PERARDb18620c2012-01-05 12:47:08 +0000482static void xen_sync_dirty_bitmap(XenIOState *state,
483 target_phys_addr_t start_addr,
484 ram_addr_t size)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100485{
486 target_phys_addr_t npages = size >> TARGET_PAGE_BITS;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100487 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 */
Anthony PERARDb18620c2012-01-05 12:47:08 +0000495 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100496 }
497
498 if (state->log_for_dirtybit == NULL) {
499 state->log_for_dirtybit = physmap;
500 } else if (state->log_for_dirtybit != physmap) {
Anthony PERARDb18620c2012-01-05 12:47:08 +0000501 /* Only one range for dirty bitmap can be tracked. */
502 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100503 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100504
505 rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
506 start_addr >> TARGET_PAGE_BITS, npages,
507 bitmap);
Anthony PERARDb18620c2012-01-05 12:47:08 +0000508 if (rc < 0) {
509 if (rc != -ENODATA) {
510 fprintf(stderr, "xen: track_dirty_vram failed (0x" TARGET_FMT_plx
511 ", 0x" TARGET_FMT_plx "): %s\n",
512 start_addr, start_addr + size, strerror(-rc));
513 }
514 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100515 }
516
517 for (i = 0; i < ARRAY_SIZE(bitmap); i++) {
518 unsigned long map = bitmap[i];
519 while (map != 0) {
520 j = ffsl(map) - 1;
521 map &= ~(1ul << j);
Avi Kivity5a970652011-12-21 14:21:27 +0200522 memory_region_set_dirty(framebuffer,
Blue Swirlfd4aa972011-10-16 16:04:59 +0000523 (i * width + j) * TARGET_PAGE_SIZE,
524 TARGET_PAGE_SIZE);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100525 };
526 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100527}
528
Avi Kivity20581d22011-12-19 12:07:50 +0200529static void xen_log_start(MemoryListener *listener,
530 MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100531{
Avi Kivity20581d22011-12-19 12:07:50 +0200532 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100533
Anthony PERARDb18620c2012-01-05 12:47:08 +0000534 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
535 section->size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100536}
537
Avi Kivity20581d22011-12-19 12:07:50 +0200538static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100539{
Avi Kivity20581d22011-12-19 12:07:50 +0200540 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100541
542 state->log_for_dirtybit = NULL;
543 /* Disable dirty bit tracking */
Anthony PERARDb18620c2012-01-05 12:47:08 +0000544 xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100545}
546
Avi Kivity20581d22011-12-19 12:07:50 +0200547static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100548{
Avi Kivity20581d22011-12-19 12:07:50 +0200549 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100550
Anthony PERARDb18620c2012-01-05 12:47:08 +0000551 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
552 section->size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100553}
554
Avi Kivity20581d22011-12-19 12:07:50 +0200555static void xen_log_global_start(MemoryListener *listener)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100556{
Anthony PERARD39f42432012-10-03 13:48:19 +0000557 if (xen_enabled()) {
558 xen_in_migration = true;
559 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100560}
561
Avi Kivity20581d22011-12-19 12:07:50 +0200562static void xen_log_global_stop(MemoryListener *listener)
563{
Anthony PERARD39f42432012-10-03 13:48:19 +0000564 xen_in_migration = false;
Avi Kivity20581d22011-12-19 12:07:50 +0200565}
566
Avi Kivity80a1ea32012-02-08 16:39:06 +0200567static void xen_eventfd_add(MemoryListener *listener,
568 MemoryRegionSection *section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200569 bool match_data, uint64_t data,
570 EventNotifier *e)
Avi Kivity80a1ea32012-02-08 16:39:06 +0200571{
572}
573
574static void xen_eventfd_del(MemoryListener *listener,
575 MemoryRegionSection *section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200576 bool match_data, uint64_t data,
577 EventNotifier *e)
Avi Kivity80a1ea32012-02-08 16:39:06 +0200578{
579}
580
Avi Kivity20581d22011-12-19 12:07:50 +0200581static MemoryListener xen_memory_listener = {
Avi Kivity50c1e142012-02-08 21:36:02 +0200582 .begin = xen_begin,
583 .commit = xen_commit,
Avi Kivity20581d22011-12-19 12:07:50 +0200584 .region_add = xen_region_add,
585 .region_del = xen_region_del,
Avi Kivity50c1e142012-02-08 21:36:02 +0200586 .region_nop = xen_region_nop,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100587 .log_start = xen_log_start,
588 .log_stop = xen_log_stop,
Avi Kivity20581d22011-12-19 12:07:50 +0200589 .log_sync = xen_log_sync,
590 .log_global_start = xen_log_global_start,
591 .log_global_stop = xen_log_global_stop,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200592 .eventfd_add = xen_eventfd_add,
593 .eventfd_del = xen_eventfd_del,
Avi Kivity72e22d22012-02-08 15:05:50 +0200594 .priority = 10,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100595};
Jun Nakajima432d2682010-08-31 16:41:25 +0100596
Anthony PERARD39f42432012-10-03 13:48:19 +0000597void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
598{
599 if (enable) {
600 memory_global_dirty_log_start();
601 } else {
602 memory_global_dirty_log_stop();
603 }
604}
605
Anthony PERARD29d3ccd2010-06-30 12:58:34 +0100606/* VCPU Operations, MMIO, IO ring ... */
607
608static void xen_reset_vcpu(void *opaque)
609{
Andreas Färber9349b4f2012-03-14 01:38:32 +0100610 CPUArchState *env = opaque;
Anthony PERARD29d3ccd2010-06-30 12:58:34 +0100611
612 env->halted = 1;
613}
614
615void xen_vcpu_init(void)
616{
Andreas Färber9349b4f2012-03-14 01:38:32 +0100617 CPUArchState *first_cpu;
Anthony PERARD29d3ccd2010-06-30 12:58:34 +0100618
619 if ((first_cpu = qemu_get_cpu(0))) {
620 qemu_register_reset(xen_reset_vcpu, first_cpu);
621 xen_reset_vcpu(first_cpu);
622 }
Stefano Stabellini95d5d752011-11-21 11:10:21 +0000623 /* if rtc_clock is left to default (host_clock), disable it */
624 if (rtc_clock == host_clock) {
625 qemu_clock_enable(rtc_clock, false);
626 }
Anthony PERARD29d3ccd2010-06-30 12:58:34 +0100627}
628
Arun Sharma9ce94e72010-09-06 20:07:14 +0100629/* get the ioreq packets from share mem */
630static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
631{
632 ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
633
634 if (req->state != STATE_IOREQ_READY) {
635 DPRINTF("I/O request not ready: "
636 "%x, ptr: %x, port: %"PRIx64", "
637 "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
638 req->state, req->data_is_ptr, req->addr,
639 req->data, req->count, req->size);
640 return NULL;
641 }
642
643 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
644
645 req->state = STATE_IOREQ_INPROCESS;
646 return req;
647}
648
649/* use poll to get the port notification */
650/* ioreq_vec--out,the */
651/* retval--the number of ioreq packet */
652static ioreq_t *cpu_get_ioreq(XenIOState *state)
653{
654 int i;
655 evtchn_port_t port;
656
657 port = xc_evtchn_pending(state->xce_handle);
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000658 if (port == state->bufioreq_local_port) {
659 qemu_mod_timer(state->buffered_io_timer,
660 BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock));
661 return NULL;
662 }
663
Arun Sharma9ce94e72010-09-06 20:07:14 +0100664 if (port != -1) {
665 for (i = 0; i < smp_cpus; i++) {
666 if (state->ioreq_local_port[i] == port) {
667 break;
668 }
669 }
670
671 if (i == smp_cpus) {
672 hw_error("Fatal error while trying to get io event!\n");
673 }
674
675 /* unmask the wanted port again */
676 xc_evtchn_unmask(state->xce_handle, port);
677
678 /* get the io packet from shared memory */
679 state->send_vcpu = i;
680 return cpu_get_ioreq_from_shared_memory(state, i);
681 }
682
683 /* read error or read nothing */
684 return NULL;
685}
686
687static uint32_t do_inp(pio_addr_t addr, unsigned long size)
688{
689 switch (size) {
690 case 1:
691 return cpu_inb(addr);
692 case 2:
693 return cpu_inw(addr);
694 case 4:
695 return cpu_inl(addr);
696 default:
697 hw_error("inp: bad size: %04"FMT_pioaddr" %lx", addr, size);
698 }
699}
700
701static void do_outp(pio_addr_t addr,
702 unsigned long size, uint32_t val)
703{
704 switch (size) {
705 case 1:
706 return cpu_outb(addr, val);
707 case 2:
708 return cpu_outw(addr, val);
709 case 4:
710 return cpu_outl(addr, val);
711 default:
712 hw_error("outp: bad size: %04"FMT_pioaddr" %lx", addr, size);
713 }
714}
715
716static void cpu_ioreq_pio(ioreq_t *req)
717{
718 int i, sign;
719
720 sign = req->df ? -1 : 1;
721
722 if (req->dir == IOREQ_READ) {
723 if (!req->data_is_ptr) {
724 req->data = do_inp(req->addr, req->size);
725 } else {
726 uint32_t tmp;
727
728 for (i = 0; i < req->count; i++) {
729 tmp = do_inp(req->addr, req->size);
Dongxiao Xu14d40182012-08-22 10:17:43 +0000730 cpu_physical_memory_write(
731 req->data + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100732 (uint8_t *) &tmp, req->size);
733 }
734 }
735 } else if (req->dir == IOREQ_WRITE) {
736 if (!req->data_is_ptr) {
737 do_outp(req->addr, req->size, req->data);
738 } else {
739 for (i = 0; i < req->count; i++) {
740 uint32_t tmp = 0;
741
Dongxiao Xu14d40182012-08-22 10:17:43 +0000742 cpu_physical_memory_read(
743 req->data + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100744 (uint8_t*) &tmp, req->size);
745 do_outp(req->addr, req->size, tmp);
746 }
747 }
748 }
749}
750
751static void cpu_ioreq_move(ioreq_t *req)
752{
753 int i, sign;
754
755 sign = req->df ? -1 : 1;
756
757 if (!req->data_is_ptr) {
758 if (req->dir == IOREQ_READ) {
759 for (i = 0; i < req->count; i++) {
Dongxiao Xu14d40182012-08-22 10:17:43 +0000760 cpu_physical_memory_read(
761 req->addr + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100762 (uint8_t *) &req->data, req->size);
763 }
764 } else if (req->dir == IOREQ_WRITE) {
765 for (i = 0; i < req->count; i++) {
Dongxiao Xu14d40182012-08-22 10:17:43 +0000766 cpu_physical_memory_write(
767 req->addr + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100768 (uint8_t *) &req->data, req->size);
769 }
770 }
771 } else {
Stefano Stabellini2b734342011-05-20 16:57:24 +0000772 uint64_t tmp;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100773
774 if (req->dir == IOREQ_READ) {
775 for (i = 0; i < req->count; i++) {
Dongxiao Xu14d40182012-08-22 10:17:43 +0000776 cpu_physical_memory_read(
777 req->addr + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100778 (uint8_t*) &tmp, req->size);
Dongxiao Xu14d40182012-08-22 10:17:43 +0000779 cpu_physical_memory_write(
780 req->data + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100781 (uint8_t*) &tmp, req->size);
782 }
783 } else if (req->dir == IOREQ_WRITE) {
784 for (i = 0; i < req->count; i++) {
Dongxiao Xu14d40182012-08-22 10:17:43 +0000785 cpu_physical_memory_read(
786 req->data + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100787 (uint8_t*) &tmp, req->size);
Dongxiao Xu14d40182012-08-22 10:17:43 +0000788 cpu_physical_memory_write(
789 req->addr + (sign * i * (int64_t)req->size),
Arun Sharma9ce94e72010-09-06 20:07:14 +0100790 (uint8_t*) &tmp, req->size);
791 }
792 }
793 }
794}
795
796static void handle_ioreq(ioreq_t *req)
797{
798 if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
799 (req->size < sizeof (target_ulong))) {
800 req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
801 }
802
803 switch (req->type) {
804 case IOREQ_TYPE_PIO:
805 cpu_ioreq_pio(req);
806 break;
807 case IOREQ_TYPE_COPY:
808 cpu_ioreq_move(req);
809 break;
810 case IOREQ_TYPE_TIMEOFFSET:
811 break;
812 case IOREQ_TYPE_INVALIDATE:
Jan Kiszkae41d7c62011-06-21 22:59:08 +0200813 xen_invalidate_map_cache();
Arun Sharma9ce94e72010-09-06 20:07:14 +0100814 break;
815 default:
816 hw_error("Invalid ioreq type 0x%x\n", req->type);
817 }
818}
819
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000820static int handle_buffered_iopage(XenIOState *state)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100821{
822 buf_ioreq_t *buf_req = NULL;
823 ioreq_t req;
824 int qw;
825
826 if (!state->buffered_io_page) {
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000827 return 0;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100828 }
829
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000830 memset(&req, 0x00, sizeof(req));
831
Arun Sharma9ce94e72010-09-06 20:07:14 +0100832 while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) {
833 buf_req = &state->buffered_io_page->buf_ioreq[
834 state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM];
835 req.size = 1UL << buf_req->size;
836 req.count = 1;
837 req.addr = buf_req->addr;
838 req.data = buf_req->data;
839 req.state = STATE_IOREQ_READY;
840 req.dir = buf_req->dir;
841 req.df = 1;
842 req.type = buf_req->type;
843 req.data_is_ptr = 0;
844 qw = (req.size == 8);
845 if (qw) {
846 buf_req = &state->buffered_io_page->buf_ioreq[
847 (state->buffered_io_page->read_pointer + 1) % IOREQ_BUFFER_SLOT_NUM];
848 req.data |= ((uint64_t)buf_req->data) << 32;
849 }
850
851 handle_ioreq(&req);
852
853 xen_mb();
854 state->buffered_io_page->read_pointer += qw ? 2 : 1;
855 }
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000856
857 return req.count;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100858}
859
860static void handle_buffered_io(void *opaque)
861{
862 XenIOState *state = opaque;
863
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000864 if (handle_buffered_iopage(state)) {
865 qemu_mod_timer(state->buffered_io_timer,
866 BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock));
867 } else {
868 qemu_del_timer(state->buffered_io_timer);
869 xc_evtchn_unmask(state->xce_handle, state->bufioreq_local_port);
870 }
Arun Sharma9ce94e72010-09-06 20:07:14 +0100871}
872
873static void cpu_handle_ioreq(void *opaque)
874{
875 XenIOState *state = opaque;
876 ioreq_t *req = cpu_get_ioreq(state);
877
878 handle_buffered_iopage(state);
879 if (req) {
880 handle_ioreq(req);
881
882 if (req->state != STATE_IOREQ_INPROCESS) {
883 fprintf(stderr, "Badness in I/O request ... not in service?!: "
884 "%x, ptr: %x, port: %"PRIx64", "
885 "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
886 req->state, req->data_is_ptr, req->addr,
887 req->data, req->count, req->size);
John V. Baboval180640e2012-05-17 10:33:09 +0000888 destroy_hvm_domain(false);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100889 return;
890 }
891
892 xen_wmb(); /* Update ioreq contents /then/ update state. */
893
894 /*
895 * We do this before we send the response so that the tools
896 * have the opportunity to pick up on the reset before the
897 * guest resumes and does a hlt with interrupts disabled which
898 * causes Xen to powerdown the domain.
899 */
Luiz Capitulino13548692011-07-29 15:36:43 -0300900 if (runstate_is_running()) {
Arun Sharma9ce94e72010-09-06 20:07:14 +0100901 if (qemu_shutdown_requested_get()) {
John V. Baboval180640e2012-05-17 10:33:09 +0000902 destroy_hvm_domain(false);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100903 }
904 if (qemu_reset_requested_get()) {
Jan Kiszkae063eb12011-06-14 18:29:43 +0200905 qemu_system_reset(VMRESET_REPORT);
John V. Baboval180640e2012-05-17 10:33:09 +0000906 destroy_hvm_domain(true);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100907 }
908 }
909
910 req->state = STATE_IORESP_READY;
911 xc_evtchn_notify(state->xce_handle, state->ioreq_local_port[state->send_vcpu]);
912 }
913}
914
Stefano Stabellini0f517262011-06-30 18:26:29 +0100915static int store_dev_info(int domid, CharDriverState *cs, const char *string)
916{
917 struct xs_handle *xs = NULL;
918 char *path = NULL;
919 char *newpath = NULL;
920 char *pts = NULL;
921 int ret = -1;
922
923 /* Only continue if we're talking to a pty. */
924 if (strncmp(cs->filename, "pty:", 4)) {
925 return 0;
926 }
927 pts = cs->filename + 4;
928
929 /* We now have everything we need to set the xenstore entry. */
930 xs = xs_open(0);
931 if (xs == NULL) {
932 fprintf(stderr, "Could not contact XenStore\n");
933 goto out;
934 }
935
936 path = xs_get_domain_path(xs, domid);
937 if (path == NULL) {
938 fprintf(stderr, "xs_get_domain_path() error\n");
939 goto out;
940 }
941 newpath = realloc(path, (strlen(path) + strlen(string) +
942 strlen("/tty") + 1));
943 if (newpath == NULL) {
944 fprintf(stderr, "realloc error\n");
945 goto out;
946 }
947 path = newpath;
948
949 strcat(path, string);
950 strcat(path, "/tty");
951 if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) {
952 fprintf(stderr, "xs_write for '%s' fail", string);
953 goto out;
954 }
955 ret = 0;
956
957out:
958 free(path);
959 xs_close(xs);
960
961 return ret;
962}
963
964void xenstore_store_pv_console_info(int i, CharDriverState *chr)
965{
966 if (i == 0) {
967 store_dev_info(xen_domid, chr, "/console");
968 } else {
969 char buf[32];
970 snprintf(buf, sizeof(buf), "/device/console/%d", i);
971 store_dev_info(xen_domid, chr, buf);
972 }
973}
974
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000975static void xenstore_record_dm_state(struct xs_handle *xs, const char *state)
Anthony PERARD29321332010-09-06 20:07:33 +0100976{
977 char path[50];
978
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000979 if (xs == NULL) {
980 fprintf(stderr, "xenstore connection not initialized\n");
981 exit(1);
982 }
983
Anthony PERARD29321332010-09-06 20:07:33 +0100984 snprintf(path, sizeof (path), "/local/domain/0/device-model/%u/state", xen_domid);
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000985 if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) {
Anthony PERARD29321332010-09-06 20:07:33 +0100986 fprintf(stderr, "error recording dm state\n");
987 exit(1);
988 }
989}
990
Arun Sharma9ce94e72010-09-06 20:07:14 +0100991static void xen_main_loop_prepare(XenIOState *state)
992{
993 int evtchn_fd = -1;
994
995 if (state->xce_handle != XC_HANDLER_INITIAL_VALUE) {
996 evtchn_fd = xc_evtchn_fd(state->xce_handle);
997 }
998
999 state->buffered_io_timer = qemu_new_timer_ms(rt_clock, handle_buffered_io,
1000 state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001001
1002 if (evtchn_fd != -1) {
1003 qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
1004 }
1005}
1006
1007
Anthony PERARD3285cf42010-08-19 12:27:56 +01001008/* Initialise Xen */
1009
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -03001010static void xen_change_state_handler(void *opaque, int running,
1011 RunState state)
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +00001012{
1013 if (running) {
1014 /* record state running */
1015 xenstore_record_dm_state(xenstore, "running");
1016 }
1017}
1018
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -03001019static void xen_hvm_change_state_handler(void *opaque, int running,
1020 RunState rstate)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001021{
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -03001022 XenIOState *xstate = opaque;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001023 if (running) {
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -03001024 xen_main_loop_prepare(xstate);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001025 }
1026}
1027
Jan Kiszka9e8dd452011-06-20 14:06:26 +02001028static void xen_exit_notifier(Notifier *n, void *data)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001029{
1030 XenIOState *state = container_of(n, XenIOState, exit);
1031
1032 xc_evtchn_close(state->xce_handle);
Anthony PERARD29321332010-09-06 20:07:33 +01001033 xs_daemon_close(state->xenstore);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001034}
1035
Anthony PERARD3285cf42010-08-19 12:27:56 +01001036int xen_init(void)
1037{
1038 xen_xc = xen_xc_interface_open(0, 0, 0);
1039 if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
1040 xen_be_printf(NULL, 0, "can't open xen interface\n");
1041 return -1;
1042 }
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +00001043 qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
Anthony PERARD3285cf42010-08-19 12:27:56 +01001044
1045 return 0;
1046}
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001047
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001048static void xen_read_physmap(XenIOState *state)
1049{
1050 XenPhysmap *physmap = NULL;
1051 unsigned int len, num, i;
1052 char path[80], *value = NULL;
1053 char **entries = NULL;
1054
1055 snprintf(path, sizeof(path),
1056 "/local/domain/0/device-model/%d/physmap", xen_domid);
1057 entries = xs_directory(state->xenstore, 0, path, &num);
1058 if (entries == NULL)
1059 return;
1060
1061 for (i = 0; i < num; i++) {
1062 physmap = g_malloc(sizeof (XenPhysmap));
1063 physmap->phys_offset = strtoull(entries[i], NULL, 16);
1064 snprintf(path, sizeof(path),
1065 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1066 xen_domid, entries[i]);
1067 value = xs_read(state->xenstore, 0, path, &len);
1068 if (value == NULL) {
1069 free(physmap);
1070 continue;
1071 }
1072 physmap->start_addr = strtoull(value, NULL, 16);
1073 free(value);
1074
1075 snprintf(path, sizeof(path),
1076 "/local/domain/0/device-model/%d/physmap/%s/size",
1077 xen_domid, entries[i]);
1078 value = xs_read(state->xenstore, 0, path, &len);
1079 if (value == NULL) {
1080 free(physmap);
1081 continue;
1082 }
1083 physmap->size = strtoull(value, NULL, 16);
1084 free(value);
1085
1086 snprintf(path, sizeof(path),
1087 "/local/domain/0/device-model/%d/physmap/%s/name",
1088 xen_domid, entries[i]);
1089 physmap->name = xs_read(state->xenstore, 0, path, &len);
1090
1091 QLIST_INSERT_HEAD(&state->physmap, physmap, list);
1092 }
1093 free(entries);
1094 return;
1095}
1096
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001097int xen_hvm_init(void)
1098{
Arun Sharma9ce94e72010-09-06 20:07:14 +01001099 int i, rc;
1100 unsigned long ioreq_pfn;
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001101 unsigned long bufioreq_evtchn;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001102 XenIOState *state;
1103
Anthony Liguori7267c092011-08-20 22:09:37 -05001104 state = g_malloc0(sizeof (XenIOState));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001105
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
Anthony PERARD29321332010-09-06 20:07:33 +01001112 state->xenstore = xs_daemon_open();
1113 if (state->xenstore == NULL) {
1114 perror("xen: xenstore open");
1115 return -errno;
1116 }
1117
Arun Sharma9ce94e72010-09-06 20:07:14 +01001118 state->exit.notify = xen_exit_notifier;
1119 qemu_add_exit_notifier(&state->exit);
1120
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +01001121 state->suspend.notify = xen_suspend_notifier;
1122 qemu_register_suspend_notifier(&state->suspend);
1123
Arun Sharma9ce94e72010-09-06 20:07:14 +01001124 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
Anthony Liguori7267c092011-08-20 22:09:37 -05001141 state->ioreq_local_port = g_malloc0(smp_cpus * sizeof (evtchn_port_t));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001142
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
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001154 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
Jun Nakajima432d2682010-08-31 16:41:25 +01001168 /* Init RAM management */
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +00001169 xen_map_cache_init(xen_phys_offset_to_gaddr, state);
Jun Nakajima432d2682010-08-31 16:41:25 +01001170 xen_ram_init(ram_size);
1171
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +00001172 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001173
Avi Kivity20581d22011-12-19 12:07:50 +02001174 state->memory_listener = xen_memory_listener;
Anthony PERARDb4dd7802011-05-24 14:34:21 +01001175 QLIST_INIT(&state->physmap);
Avi Kivity947f5622012-02-08 21:10:42 +02001176 memory_listener_register(&state->memory_listener, get_system_memory());
Anthony PERARDb4dd7802011-05-24 14:34:21 +01001177 state->log_for_dirtybit = NULL;
1178
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001179 /* 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);
Stefano Stabellini37cdfcf2011-06-24 17:36:11 +01001185 xen_be_register("vkbd", &xen_kbdmouse_ops);
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001186 xen_be_register("qdisk", &xen_blkdev_ops);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001187 xen_read_physmap(state);
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001188
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001189 return 0;
1190}
Arun Sharma9ce94e72010-09-06 20:07:14 +01001191
John V. Baboval180640e2012-05-17 10:33:09 +00001192void destroy_hvm_domain(bool reboot)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001193{
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 {
John V. Baboval180640e2012-05-17 10:33:09 +00001201 sts = xc_domain_shutdown(xc_handle, xen_domid,
1202 reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001203 if (sts != 0) {
John V. Baboval180640e2012-05-17 10:33:09 +00001204 fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
1205 "sts %d, %s\n", reboot ? "reboot" : "poweroff",
1206 sts, strerror(errno));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001207 } else {
John V. Baboval180640e2012-05-17 10:33:09 +00001208 fprintf(stderr, "Issued domain %d %s\n", xen_domid,
1209 reboot ? "reboot" : "poweroff");
Arun Sharma9ce94e72010-09-06 20:07:14 +01001210 }
1211 xc_interface_close(xc_handle);
1212 }
1213}
Avi Kivityc65adf92011-12-18 16:40:50 +02001214
1215void xen_register_framebuffer(MemoryRegion *mr)
1216{
1217 framebuffer = mr;
1218}
Allen Kayeaab4d62012-06-21 15:40:09 +00001219
1220void 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}
Anthony PERARD910b38e2012-10-03 13:48:45 +00001231
1232void 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}