]> git.proxmox.com Git - mirror_qemu.git/blame - memory.c
projects / mirror_qemu.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging
[mirror_qemu.git] / memory.c
CommitLineData
093bc2cd
AK		 1/*
2 * Physical memory management
3 *
4 * Copyright 2011 Red Hat, Inc. and/or its affiliates
5 *
6 * Authors:
7 * Avi Kivity <avi@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
6b620ca3
PB		 12 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
093bc2cd
AK		 14 */
15
d38ea87a 16#include "qemu/osdep.h"
da34e65c 17#include "qapi/error.h"
33c11879
PB		 18#include "qemu-common.h"
19#include "cpu.h"
022c62cb
PB		 20#include "exec/memory.h"
21#include "exec/address-spaces.h"
409ddd01 22#include "qapi/visitor.h"
1de7afc9 23#include "qemu/bitops.h"
8c56c1a5 24#include "qemu/error-report.h"
2c9b15ca 25#include "qom/object.h"
0ab8ed18 26#include "trace-root.h"
093bc2cd 27
022c62cb 28#include "exec/memory-internal.h"
220c3ebd 29#include "exec/ram_addr.h"
8c56c1a5 30#include "sysemu/kvm.h"
e1c57ab8 31#include "sysemu/sysemu.h"
c9356746
FK		 32#include "hw/misc/mmio_interface.h"
33#include "hw/qdev-properties.h"
b08199c6 34#include "migration/vmstate.h"
67d95c15 35
d197063f
PB		 36//#define DEBUG_UNASSIGNED
37
22bde714
JK		 38static unsigned memory_region_transaction_depth;
39static bool memory_region_update_pending;
4dc56152 40static bool ioeventfd_update_pending;
7664e80c
AK		 41static bool global_dirty_log = false;
42
72e22d2f
AK		 43static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
44 = QTAILQ_HEAD_INITIALIZER(memory_listeners);
4ef4db86 45
0d673e36
AK		 46static QTAILQ_HEAD(, AddressSpace) address_spaces
47 = QTAILQ_HEAD_INITIALIZER(address_spaces);
48
967dc9b1
AK		 49static GHashTable *flat_views;
50
093bc2cd
AK		 51typedef struct AddrRange AddrRange;
52
8417cebf 53/*
c9cdaa3a 54 * Note that signed integers are needed for negative offsetting in aliases
8417cebf
AK		 55 * (large MemoryRegion::alias_offset).
56 */
093bc2cd 57struct AddrRange {
08dafab4
AK		 58 Int128 start;
59 Int128 size;
093bc2cd
AK		 60};
61
08dafab4 62static AddrRange addrrange_make(Int128 start, Int128 size)
093bc2cd
AK		 63{
64 return (AddrRange) { start, size };
65}
66
67static bool addrrange_equal(AddrRange r1, AddrRange r2)
68{
08dafab4 69 return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
093bc2cd
AK		 70}
71
08dafab4 72static Int128 addrrange_end(AddrRange r)
093bc2cd 73{
08dafab4 74 return int128_add(r.start, r.size);
093bc2cd
AK		 75}
76
08dafab4 77static AddrRange addrrange_shift(AddrRange range, Int128 delta)
093bc2cd 78{
08dafab4 79 int128_addto(&range.start, delta);
093bc2cd
AK		 80 return range;
81}
82
08dafab4
AK		 83static bool addrrange_contains(AddrRange range, Int128 addr)
84{
85 return int128_ge(addr, range.start)
86 && int128_lt(addr, addrrange_end(range));
87}
88
093bc2cd
AK		 89static bool addrrange_intersects(AddrRange r1, AddrRange r2)
90{
08dafab4
AK		 91 return addrrange_contains(r1, r2.start)
92 || addrrange_contains(r2, r1.start);
093bc2cd
AK		 93}
94
95static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
96{
08dafab4
AK		 97 Int128 start = int128_max(r1.start, r2.start);
98 Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
99 return addrrange_make(start, int128_sub(end, start));
093bc2cd
AK		 100}
101
0e0d36b4
AK		 102enum ListenerDirection { Forward, Reverse };
103
7376e582 104#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
0e0d36b4
AK		 105 do { \
106 MemoryListener *_listener; \
107 \
108 switch (_direction) { \
109 case Forward: \
110 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
975aefe0
AK		 111 if (_listener->_callback) { \
112 _listener->_callback(_listener, ##_args); \
113 } \
0e0d36b4
AK		 114 } \
115 break; \
116 case Reverse: \
117 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
118 memory_listeners, link) { \
975aefe0
AK		 119 if (_listener->_callback) { \
120 _listener->_callback(_listener, ##_args); \
121 } \
0e0d36b4
AK		 122 } \
123 break; \
124 default: \
125 abort(); \
126 } \
127 } while (0)
128
9a54635d 129#define MEMORY_LISTENER_CALL(_as, _callback, _direction, _section, _args...) \
7376e582
AK		 130 do { \
131 MemoryListener *_listener; \
9a54635d 132 struct memory_listeners_as *list = &(_as)->listeners; \
7376e582
AK		 133 \
134 switch (_direction) { \
135 case Forward: \
9a54635d
PB		 136 QTAILQ_FOREACH(_listener, list, link_as) { \
137 if (_listener->_callback) { \
7376e582
AK		 138 _listener->_callback(_listener, _section, ##_args); \
139 } \
140 } \
141 break; \
142 case Reverse: \
9a54635d
PB		 143 QTAILQ_FOREACH_REVERSE(_listener, list, memory_listeners_as, \
144 link_as) { \
145 if (_listener->_callback) { \
7376e582
AK		 146 _listener->_callback(_listener, _section, ##_args); \
147 } \
148 } \
149 break; \
150 default: \
151 abort(); \
152 } \
153 } while (0)
154
dfde4e6e 155/* No need to ref/unref .mr, the FlatRange keeps it alive. */
b2dfd71c 156#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback, _args...) \
9c1f8f44 157 do { \
16620684
AK		 158 MemoryRegionSection mrs = section_from_flat_range(fr, \
159 address_space_to_flatview(as)); \
9a54635d 160 MEMORY_LISTENER_CALL(as, callback, dir, &mrs, ##_args); \
9c1f8f44 161 } while(0)
0e0d36b4 162
093bc2cd
AK		 163struct CoalescedMemoryRange {
164 AddrRange addr;
165 QTAILQ_ENTRY(CoalescedMemoryRange) link;
166};
167
3e9d69e7
AK		 168struct MemoryRegionIoeventfd {
169 AddrRange addr;
170 bool match_data;
171 uint64_t data;
753d5e14 172 EventNotifier *e;
3e9d69e7
AK		 173};
174
73bb753d
TB		 175static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd *a,
176 MemoryRegionIoeventfd *b)
3e9d69e7 177{
73bb753d 178 if (int128_lt(a->addr.start, b->addr.start)) {
3e9d69e7 179 return true;
73bb753d 180 } else if (int128_gt(a->addr.start, b->addr.start)) {
3e9d69e7 181 return false;
73bb753d 182 } else if (int128_lt(a->addr.size, b->addr.size)) {
3e9d69e7 183 return true;
73bb753d 184 } else if (int128_gt(a->addr.size, b->addr.size)) {
3e9d69e7 185 return false;
73bb753d 186 } else if (a->match_data < b->match_data) {
3e9d69e7 187 return true;
73bb753d 188 } else if (a->match_data > b->match_data) {
3e9d69e7 189 return false;
73bb753d
TB		 190 } else if (a->match_data) {
191 if (a->data < b->data) {
3e9d69e7 192 return true;
73bb753d 193 } else if (a->data > b->data) {
3e9d69e7
AK		 194 return false;
195 }
196 }
73bb753d 197 if (a->e < b->e) {
3e9d69e7 198 return true;
73bb753d 199 } else if (a->e > b->e) {
3e9d69e7
AK		 200 return false;
201 }
202 return false;
203}
204
73bb753d
TB		 205static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd *a,
206 MemoryRegionIoeventfd *b)
3e9d69e7
AK		 207{
208 return !memory_region_ioeventfd_before(a, b)
209 && !memory_region_ioeventfd_before(b, a);
210}
211
093bc2cd
AK		 212/* Range of memory in the global map. Addresses are absolute. */
213struct FlatRange {
214 MemoryRegion *mr;
a8170e5e 215 hwaddr offset_in_region;
093bc2cd 216 AddrRange addr;
5a583347 217 uint8_t dirty_log_mask;
b138e654 218 bool romd_mode;
fb1cd6f9 219 bool readonly;
093bc2cd
AK		 220};
221
093bc2cd
AK		 222#define FOR_EACH_FLAT_RANGE(var, view) \
223 for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
224
9c1f8f44 225static inline MemoryRegionSection
16620684 226section_from_flat_range(FlatRange *fr, FlatView *fv)
9c1f8f44
PB		 227{
228 return (MemoryRegionSection) {
229 .mr = fr->mr,
16620684 230 .fv = fv,
9c1f8f44
PB		 231 .offset_within_region = fr->offset_in_region,
232 .size = fr->addr.size,
233 .offset_within_address_space = int128_get64(fr->addr.start),
234 .readonly = fr->readonly,
235 };
236}
237
093bc2cd
AK		 238static bool flatrange_equal(FlatRange *a, FlatRange *b)
239{
240 return a->mr == b->mr
241 && addrrange_equal(a->addr, b->addr)
d0a9b5bc 242 && a->offset_in_region == b->offset_in_region
b138e654 243 && a->romd_mode == b->romd_mode
fb1cd6f9 244 && a->readonly == b->readonly;
093bc2cd
AK		 245}
246
89c177bb 247static FlatView *flatview_new(MemoryRegion *mr_root)
093bc2cd 248{
cc94cd6d
AK		 249 FlatView *view;
250
251 view = g_new0(FlatView, 1);
856d7245 252 view->ref = 1;
89c177bb
AK		 253 view->root = mr_root;
254 memory_region_ref(mr_root);
02d9651d 255 trace_flatview_new(view, mr_root);
cc94cd6d
AK		 256
257 return view;
093bc2cd
AK		 258}
259
260/* Insert a range into a given position. Caller is responsible for maintaining
261 * sorting order.
262 */
263static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
264{
265 if (view->nr == view->nr_allocated) {
266 view->nr_allocated = MAX(2 * view->nr, 10);
7267c094 267 view->ranges = g_realloc(view->ranges,
093bc2cd
AK		 268 view->nr_allocated * sizeof(*view->ranges));
269 }
270 memmove(view->ranges + pos + 1, view->ranges + pos,
271 (view->nr - pos) * sizeof(FlatRange));
272 view->ranges[pos] = *range;
dfde4e6e 273 memory_region_ref(range->mr);
093bc2cd
AK		 274 ++view->nr;
275}
276
277static void flatview_destroy(FlatView *view)
278{
dfde4e6e
PB		 279 int i;
280
02d9651d 281 trace_flatview_destroy(view, view->root);
66a6df1d
AK		 282 if (view->dispatch) {
283 address_space_dispatch_free(view->dispatch);
284 }
dfde4e6e
PB		 285 for (i = 0; i < view->nr; i++) {
286 memory_region_unref(view->ranges[i].mr);
287 }
7267c094 288 g_free(view->ranges);
89c177bb 289 memory_region_unref(view->root);
a9a0c06d 290 g_free(view);
093bc2cd
AK		 291}
292
447b0d0b 293static bool flatview_ref(FlatView *view)
856d7245 294{
447b0d0b 295 return atomic_fetch_inc_nonzero(&view->ref) > 0;
856d7245
PB		 296}
297
48564041 298void flatview_unref(FlatView *view)
856d7245
PB		 299{
300 if (atomic_fetch_dec(&view->ref) == 1) {
02d9651d 301 trace_flatview_destroy_rcu(view, view->root);
092aa2fc 302 assert(view->root);
66a6df1d 303 call_rcu(view, flatview_destroy, rcu);
856d7245
PB		 304 }
305}
306
3d8e6bf9
AK		 307static bool can_merge(FlatRange *r1, FlatRange *r2)
308{
08dafab4 309 return int128_eq(addrrange_end(r1->addr), r2->addr.start)
3d8e6bf9 310 && r1->mr == r2->mr
08dafab4
AK		 311 && int128_eq(int128_add(int128_make64(r1->offset_in_region),
312 r1->addr.size),
313 int128_make64(r2->offset_in_region))
d0a9b5bc 314 && r1->dirty_log_mask == r2->dirty_log_mask
b138e654 315 && r1->romd_mode == r2->romd_mode
fb1cd6f9 316 && r1->readonly == r2->readonly;
3d8e6bf9
AK		 317}
318
8508e024 319/* Attempt to simplify a view by merging adjacent ranges */
3d8e6bf9
AK		 320static void flatview_simplify(FlatView *view)
321{
322 unsigned i, j;
323
324 i = 0;
325 while (i < view->nr) {
326 j = i + 1;
327 while (j < view->nr
328 && can_merge(&view->ranges[j-1], &view->ranges[j])) {
08dafab4 329 int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
3d8e6bf9
AK		 330 ++j;
331 }
332 ++i;
333 memmove(&view->ranges[i], &view->ranges[j],
334 (view->nr - j) * sizeof(view->ranges[j]));
335 view->nr -= j - i;
336 }
337}
338
e7342aa3
PB		 339static bool memory_region_big_endian(MemoryRegion *mr)
340{
341#ifdef TARGET_WORDS_BIGENDIAN
342 return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
343#else
344 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
345#endif
346}
347
e11ef3d1
PB		 348static bool memory_region_wrong_endianness(MemoryRegion *mr)
349{
350#ifdef TARGET_WORDS_BIGENDIAN
351 return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
352#else
353 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
354#endif
355}
356
357static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
358{
359 if (memory_region_wrong_endianness(mr)) {
360 switch (size) {
361 case 1:
362 break;
363 case 2:
364 *data = bswap16(*data);
365 break;
366 case 4:
367 *data = bswap32(*data);
368 break;
369 case 8:
370 *data = bswap64(*data);
371 break;
372 default:
373 abort();
374 }
375 }
376}
377
4779dc1d
HB		 378static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset)
379{
380 MemoryRegion *root;
381 hwaddr abs_addr = offset;
382
383 abs_addr += mr->addr;
384 for (root = mr; root->container; ) {
385 root = root->container;
386 abs_addr += root->addr;
387 }
388
389 return abs_addr;
390}
391
5a68be94
HB		 392static int get_cpu_index(void)
393{
394 if (current_cpu) {
395 return current_cpu->cpu_index;
396 }
397 return -1;
398}
399
cc05c43a
PM		 400static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
401 hwaddr addr,
402 uint64_t *value,
403 unsigned size,
404 unsigned shift,
405 uint64_t mask,
406 MemTxAttrs attrs)
407{
408 uint64_t tmp;
409
410 tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
23d92d68 411 if (mr->subpage) {
5a68be94 412 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
f2d08942
HB		 413 } else if (mr == &io_mem_notdirty) {
414 /* Accesses to code which has previously been translated into a TB show
415 * up in the MMIO path, as accesses to the io_mem_notdirty
416 * MemoryRegion. */
417 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
4779dc1d
HB		 418 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
419 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
5a68be94 420 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
23d92d68 421 }
cc05c43a
PM		 422 *value |= (tmp & mask) << shift;
423 return MEMTX_OK;
424}
425
426static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
ce5d2f33
PB		 427 hwaddr addr,
428 uint64_t *value,
429 unsigned size,
430 unsigned shift,
cc05c43a
PM		 431 uint64_t mask,
432 MemTxAttrs attrs)
ce5d2f33 433{
ce5d2f33
PB		 434 uint64_t tmp;
435
cc05c43a 436 tmp = mr->ops->read(mr->opaque, addr, size);
23d92d68 437 if (mr->subpage) {
5a68be94 438 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
f2d08942
HB		 439 } else if (mr == &io_mem_notdirty) {
440 /* Accesses to code which has previously been translated into a TB show
441 * up in the MMIO path, as accesses to the io_mem_notdirty
442 * MemoryRegion. */
443 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
4779dc1d
HB		 444 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
445 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
5a68be94 446 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
23d92d68 447 }
ce5d2f33 448 *value |= (tmp & mask) << shift;
cc05c43a 449 return MEMTX_OK;
ce5d2f33
PB		 450}
451
cc05c43a
PM		 452static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
453 hwaddr addr,
454 uint64_t *value,
455 unsigned size,
456 unsigned shift,
457 uint64_t mask,
458 MemTxAttrs attrs)
164a4dcd 459{
cc05c43a
PM		 460 uint64_t tmp = 0;
461 MemTxResult r;
164a4dcd 462
cc05c43a 463 r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
23d92d68 464 if (mr->subpage) {
5a68be94 465 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
f2d08942
HB		 466 } else if (mr == &io_mem_notdirty) {
467 /* Accesses to code which has previously been translated into a TB show
468 * up in the MMIO path, as accesses to the io_mem_notdirty
469 * MemoryRegion. */
470 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
4779dc1d
HB		 471 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
472 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
5a68be94 473 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
23d92d68 474 }
164a4dcd 475 *value |= (tmp & mask) << shift;
cc05c43a 476 return r;
164a4dcd
AK		 477}
478
cc05c43a
PM		 479static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
480 hwaddr addr,
481 uint64_t *value,
482 unsigned size,
483 unsigned shift,
484 uint64_t mask,
485 MemTxAttrs attrs)
ce5d2f33 486{
ce5d2f33
PB		 487 uint64_t tmp;
488
489 tmp = (*value >> shift) & mask;
23d92d68 490 if (mr->subpage) {
5a68be94 491 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
f2d08942
HB		 492 } else if (mr == &io_mem_notdirty) {
493 /* Accesses to code which has previously been translated into a TB show
494 * up in the MMIO path, as accesses to the io_mem_notdirty
495 * MemoryRegion. */
496 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
4779dc1d
HB		 497 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
498 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
5a68be94 499 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
23d92d68 500 }
ce5d2f33 501 mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
cc05c43a 502 return MEMTX_OK;
ce5d2f33
PB		 503}
504
cc05c43a
PM		 505static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
506 hwaddr addr,
507 uint64_t *value,
508 unsigned size,
509 unsigned shift,
510 uint64_t mask,
511 MemTxAttrs attrs)
164a4dcd 512{
164a4dcd
AK		 513 uint64_t tmp;
514
515 tmp = (*value >> shift) & mask;
23d92d68 516 if (mr->subpage) {
5a68be94 517 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
f2d08942
HB		 518 } else if (mr == &io_mem_notdirty) {
519 /* Accesses to code which has previously been translated into a TB show
520 * up in the MMIO path, as accesses to the io_mem_notdirty
521 * MemoryRegion. */
522 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
4779dc1d
HB		 523 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
524 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
5a68be94 525 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
23d92d68 526 }
164a4dcd 527 mr->ops->write(mr->opaque, addr, tmp, size);
cc05c43a 528 return MEMTX_OK;
164a4dcd
AK		 529}
530
cc05c43a
PM		 531static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
532 hwaddr addr,
533 uint64_t *value,
534 unsigned size,
535 unsigned shift,
536 uint64_t mask,
537 MemTxAttrs attrs)
538{
539 uint64_t tmp;
540
cc05c43a 541 tmp = (*value >> shift) & mask;
23d92d68 542 if (mr->subpage) {
5a68be94 543 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
f2d08942
HB		 544 } else if (mr == &io_mem_notdirty) {
545 /* Accesses to code which has previously been translated into a TB show
546 * up in the MMIO path, as accesses to the io_mem_notdirty
547 * MemoryRegion. */
548 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
4779dc1d
HB		 549 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
550 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
5a68be94 551 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
23d92d68 552 }
cc05c43a
PM		 553 return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
554}
555
556static MemTxResult access_with_adjusted_size(hwaddr addr,
164a4dcd
AK		 557 uint64_t *value,
558 unsigned size,
559 unsigned access_size_min,
560 unsigned access_size_max,
05e015f7
KF		 561 MemTxResult (*access_fn)
562 (MemoryRegion *mr,
563 hwaddr addr,
564 uint64_t *value,
565 unsigned size,
566 unsigned shift,
567 uint64_t mask,
568 MemTxAttrs attrs),
cc05c43a
PM		 569 MemoryRegion *mr,
570 MemTxAttrs attrs)
164a4dcd
AK		 571{
572 uint64_t access_mask;
573 unsigned access_size;
574 unsigned i;
cc05c43a 575 MemTxResult r = MEMTX_OK;
164a4dcd
AK		 576
577 if (!access_size_min) {
578 access_size_min = 1;
579 }
580 if (!access_size_max) {
581 access_size_max = 4;
582 }
ce5d2f33
PB		 583
584 /* FIXME: support unaligned access? */
164a4dcd
AK		 585 access_size = MAX(MIN(size, access_size_max), access_size_min);
586 access_mask = -1ULL >> (64 - access_size * 8);
e7342aa3
PB		 587 if (memory_region_big_endian(mr)) {
588 for (i = 0; i < size; i += access_size) {
05e015f7 589 r |= access_fn(mr, addr + i, value, access_size,
cc05c43a 590 (size - access_size - i) * 8, access_mask, attrs);
e7342aa3
PB		 591 }
592 } else {
593 for (i = 0; i < size; i += access_size) {
05e015f7 594 r |= access_fn(mr, addr + i, value, access_size, i * 8,
cc05c43a 595 access_mask, attrs);
e7342aa3 596 }
164a4dcd 597 }
cc05c43a 598 return r;
164a4dcd
AK		 599}
600
e2177955
AK		 601static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
602{
0d673e36
AK		 603 AddressSpace *as;
604
feca4ac1
PB		 605 while (mr->container) {
606 mr = mr->container;
e2177955 607 }
0d673e36
AK		 608 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
609 if (mr == as->root) {
610 return as;
611 }
e2177955 612 }
eed2bacf 613 return NULL;
e2177955
AK		 614}
615
093bc2cd
AK		 616/* Render a memory region into the global view. Ranges in @view obscure
617 * ranges in @mr.
618 */
619static void render_memory_region(FlatView *view,
620 MemoryRegion *mr,
08dafab4 621 Int128 base,
fb1cd6f9
AK		 622 AddrRange clip,
623 bool readonly)
093bc2cd
AK		 624{
625 MemoryRegion *subregion;
626 unsigned i;
a8170e5e 627 hwaddr offset_in_region;
08dafab4
AK		 628 Int128 remain;
629 Int128 now;
093bc2cd
AK		 630 FlatRange fr;
631 AddrRange tmp;
632
6bba19ba
AK		 633 if (!mr->enabled) {
634 return;
635 }
636
08dafab4 637 int128_addto(&base, int128_make64(mr->addr));
fb1cd6f9 638 readonly |= mr->readonly;
093bc2cd
AK		 639
640 tmp = addrrange_make(base, mr->size);
641
642 if (!addrrange_intersects(tmp, clip)) {
643 return;
644 }
645
646 clip = addrrange_intersection(tmp, clip);
647
648 if (mr->alias) {
08dafab4
AK		 649 int128_subfrom(&base, int128_make64(mr->alias->addr));
650 int128_subfrom(&base, int128_make64(mr->alias_offset));
fb1cd6f9 651 render_memory_region(view, mr->alias, base, clip, readonly);
093bc2cd
AK		 652 return;
653 }
654
655 /* Render subregions in priority order. */
656 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
fb1cd6f9 657 render_memory_region(view, subregion, base, clip, readonly);
093bc2cd
AK		 658 }
659
14a3c10a 660 if (!mr->terminates) {
093bc2cd
AK		 661 return;
662 }
663
08dafab4 664 offset_in_region = int128_get64(int128_sub(clip.start, base));
093bc2cd
AK		 665 base = clip.start;
666 remain = clip.size;
667
2eb74e1a 668 fr.mr = mr;
6f6a5ef3 669 fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
b138e654 670 fr.romd_mode = mr->romd_mode;
2eb74e1a
PC		 671 fr.readonly = readonly;
672
093bc2cd 673 /* Render the region itself into any gaps left by the current view. */
08dafab4
AK		 674 for (i = 0; i < view->nr && int128_nz(remain); ++i) {
675 if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
093bc2cd
AK		 676 continue;
677 }
08dafab4
AK		 678 if (int128_lt(base, view->ranges[i].addr.start)) {
679 now = int128_min(remain,
680 int128_sub(view->ranges[i].addr.start, base));
093bc2cd
AK		 681 fr.offset_in_region = offset_in_region;
682 fr.addr = addrrange_make(base, now);
683 flatview_insert(view, i, &fr);
684 ++i;
08dafab4
AK		 685 int128_addto(&base, now);
686 offset_in_region += int128_get64(now);
687 int128_subfrom(&remain, now);
093bc2cd 688 }
d26a8cae
AK		 689 now = int128_sub(int128_min(int128_add(base, remain),
690 addrrange_end(view->ranges[i].addr)),
691 base);
692 int128_addto(&base, now);
693 offset_in_region += int128_get64(now);
694 int128_subfrom(&remain, now);
093bc2cd 695 }
08dafab4 696 if (int128_nz(remain)) {
093bc2cd
AK		 697 fr.offset_in_region = offset_in_region;
698 fr.addr = addrrange_make(base, remain);
699 flatview_insert(view, i, &fr);
700 }
701}
702
89c177bb
AK		 703static MemoryRegion *memory_region_get_flatview_root(MemoryRegion *mr)
704{
e673ba9a
PB		 705 while (mr->enabled) {
706 if (mr->alias) {
707 if (!mr->alias_offset && int128_ge(mr->size, mr->alias->size)) {
708 /* The alias is included in its entirety. Use it as
709 * the "real" root, so that we can share more FlatViews.
710 */
711 mr = mr->alias;
712 continue;
713 }
714 } else if (!mr->terminates) {
715 unsigned int found = 0;
716 MemoryRegion *child, *next = NULL;
717 QTAILQ_FOREACH(child, &mr->subregions, subregions_link) {
718 if (child->enabled) {
719 if (++found > 1) {
720 next = NULL;
721 break;
722 }
723 if (!child->addr && int128_ge(mr->size, child->size)) {
724 /* A child is included in its entirety. If it's the only
725 * enabled one, use it in the hope of finding an alias down the
726 * way. This will also let us share FlatViews.
727 */
728 next = child;
729 }
730 }
731 }
092aa2fc
AK		 732 if (found == 0) {
733 return NULL;
734 }
e673ba9a
PB		 735 if (next) {
736 mr = next;
737 continue;
738 }
739 }
740
092aa2fc 741 return mr;
89c177bb
AK		 742 }
743
092aa2fc 744 return NULL;
89c177bb
AK		 745}
746
093bc2cd 747/* Render a memory topology into a list of disjoint absolute ranges. */
a9a0c06d 748static FlatView *generate_memory_topology(MemoryRegion *mr)
093bc2cd 749{
9bf561e3 750 int i;
a9a0c06d 751 FlatView *view;
093bc2cd 752
89c177bb 753 view = flatview_new(mr);
093bc2cd 754
83f3c251 755 if (mr) {
a9a0c06d 756 render_memory_region(view, mr, int128_zero(),
83f3c251
AK		 757 addrrange_make(int128_zero(), int128_2_64()), false);
758 }
a9a0c06d 759 flatview_simplify(view);
093bc2cd 760
9bf561e3
AK		 761 view->dispatch = address_space_dispatch_new(view);
762 for (i = 0; i < view->nr; i++) {
763 MemoryRegionSection mrs =
764 section_from_flat_range(&view->ranges[i], view);
765 flatview_add_to_dispatch(view, &mrs);
766 }
767 address_space_dispatch_compact(view->dispatch);
967dc9b1 768 g_hash_table_replace(flat_views, mr, view);
9bf561e3 769
093bc2cd
AK		 770 return view;
771}
772
3e9d69e7
AK		 773static void address_space_add_del_ioeventfds(AddressSpace *as,
774 MemoryRegionIoeventfd *fds_new,
775 unsigned fds_new_nb,
776 MemoryRegionIoeventfd *fds_old,
777 unsigned fds_old_nb)
778{
779 unsigned iold, inew;
80a1ea37
AK		 780 MemoryRegionIoeventfd *fd;
781 MemoryRegionSection section;
3e9d69e7
AK		 782
783 /* Generate a symmetric difference of the old and new fd sets, adding
784 * and deleting as necessary.
785 */
786
787 iold = inew = 0;
788 while (iold < fds_old_nb || inew < fds_new_nb) {
789 if (iold < fds_old_nb
790 && (inew == fds_new_nb
73bb753d
TB		 791 || memory_region_ioeventfd_before(&fds_old[iold],
792 &fds_new[inew]))) {
80a1ea37
AK		 793 fd = &fds_old[iold];
794 section = (MemoryRegionSection) {
16620684 795 .fv = address_space_to_flatview(as),
80a1ea37 796 .offset_within_address_space = int128_get64(fd->addr.start),
052e87b0 797 .size = fd->addr.size,
80a1ea37 798 };
9a54635d 799 MEMORY_LISTENER_CALL(as, eventfd_del, Forward, &section,
753d5e14 800 fd->match_data, fd->data, fd->e);
3e9d69e7
AK		 801 ++iold;
802 } else if (inew < fds_new_nb
803 && (iold == fds_old_nb
73bb753d
TB		 804 || memory_region_ioeventfd_before(&fds_new[inew],
805 &fds_old[iold]))) {
80a1ea37
AK		 806 fd = &fds_new[inew];
807 section = (MemoryRegionSection) {
16620684 808 .fv = address_space_to_flatview(as),
80a1ea37 809 .offset_within_address_space = int128_get64(fd->addr.start),
052e87b0 810 .size = fd->addr.size,
80a1ea37 811 };
9a54635d 812 MEMORY_LISTENER_CALL(as, eventfd_add, Reverse, &section,
753d5e14 813 fd->match_data, fd->data, fd->e);
3e9d69e7
AK		 814 ++inew;
815 } else {
816 ++iold;
817 ++inew;
818 }
819 }
820}
821
48564041 822FlatView *address_space_get_flatview(AddressSpace *as)
856d7245
PB		 823{
824 FlatView *view;
825
374f2981 826 rcu_read_lock();
447b0d0b 827 do {
16620684 828 view = address_space_to_flatview(as);
447b0d0b
PB		 829 /* If somebody has replaced as->current_map concurrently,
830 * flatview_ref returns false.
831 */
832 } while (!flatview_ref(view));
374f2981 833 rcu_read_unlock();
856d7245
PB		 834 return view;
835}
836
3e9d69e7
AK		 837static void address_space_update_ioeventfds(AddressSpace *as)
838{
99e86347 839 FlatView *view;
3e9d69e7
AK		 840 FlatRange *fr;
841 unsigned ioeventfd_nb = 0;
842 MemoryRegionIoeventfd *ioeventfds = NULL;
843 AddrRange tmp;
844 unsigned i;
845
856d7245 846 view = address_space_get_flatview(as);
99e86347 847 FOR_EACH_FLAT_RANGE(fr, view) {
3e9d69e7
AK		 848 for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
849 tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
08dafab4
AK		 850 int128_sub(fr->addr.start,
851 int128_make64(fr->offset_in_region)));
3e9d69e7
AK		 852 if (addrrange_intersects(fr->addr, tmp)) {
853 ++ioeventfd_nb;
7267c094 854 ioeventfds = g_realloc(ioeventfds,
3e9d69e7
AK		 855 ioeventfd_nb * sizeof(*ioeventfds));
856 ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
857 ioeventfds[ioeventfd_nb-1].addr = tmp;
858 }
859 }
860 }
861
862 address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
863 as->ioeventfds, as->ioeventfd_nb);
864
7267c094 865 g_free(as->ioeventfds);
3e9d69e7
AK		 866 as->ioeventfds = ioeventfds;
867 as->ioeventfd_nb = ioeventfd_nb;
856d7245 868 flatview_unref(view);
3e9d69e7
AK		 869}
870
b8af1afb 871static void address_space_update_topology_pass(AddressSpace *as,
a9a0c06d
PB		 872 const FlatView *old_view,
873 const FlatView *new_view,
b8af1afb 874 bool adding)
093bc2cd 875{
093bc2cd
AK		 876 unsigned iold, inew;
877 FlatRange *frold, *frnew;
093bc2cd
AK		 878
879 /* Generate a symmetric difference of the old and new memory maps.
880 * Kill ranges in the old map, and instantiate ranges in the new map.
881 */
882 iold = inew = 0;
a9a0c06d
PB		 883 while (iold < old_view->nr || inew < new_view->nr) {
884 if (iold < old_view->nr) {
885 frold = &old_view->ranges[iold];
093bc2cd
AK		 886 } else {
887 frold = NULL;
888 }
a9a0c06d
PB		 889 if (inew < new_view->nr) {
890 frnew = &new_view->ranges[inew];
093bc2cd
AK		 891 } else {
892 frnew = NULL;
893 }
894
895 if (frold
896 && (!frnew
08dafab4
AK		 897 || int128_lt(frold->addr.start, frnew->addr.start)
898 || (int128_eq(frold->addr.start, frnew->addr.start)
093bc2cd 899 && !flatrange_equal(frold, frnew)))) {
41a6e477 900 /* In old but not in new, or in both but attributes changed. */
093bc2cd 901
b8af1afb 902 if (!adding) {
72e22d2f 903 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
b8af1afb
AK		 904 }
905
093bc2cd
AK		 906 ++iold;
907 } else if (frold && frnew && flatrange_equal(frold, frnew)) {
41a6e477 908 /* In both and unchanged (except logging may have changed) */
093bc2cd 909
b8af1afb 910 if (adding) {
50c1e149 911 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
b2dfd71c
PB		 912 if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
913 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
914 frold->dirty_log_mask,
915 frnew->dirty_log_mask);
916 }
917 if (frold->dirty_log_mask & ~frnew->dirty_log_mask) {
918 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop,
919 frold->dirty_log_mask,
920 frnew->dirty_log_mask);
b8af1afb 921 }
5a583347
AK		 922 }
923
093bc2cd
AK		 924 ++iold;
925 ++inew;
093bc2cd
AK		 926 } else {
927 /* In new */
928
b8af1afb 929 if (adding) {
72e22d2f 930 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
b8af1afb
AK		 931 }
932
093bc2cd
AK		 933 ++inew;
934 }
935 }
b8af1afb
AK		 936}
937
967dc9b1
AK		 938static void flatviews_init(void)
939{
092aa2fc
AK		 940 static FlatView *empty_view;
941
967dc9b1
AK		 942 if (flat_views) {
943 return;
944 }
945
946 flat_views = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL,
947 (GDestroyNotify) flatview_unref);
092aa2fc
AK		 948 if (!empty_view) {
949 empty_view = generate_memory_topology(NULL);
950 /* We keep it alive forever in the global variable. */
951 flatview_ref(empty_view);
952 } else {
953 g_hash_table_replace(flat_views, NULL, empty_view);
954 flatview_ref(empty_view);
955 }
967dc9b1
AK		 956}
957
958static void flatviews_reset(void)
959{
960 AddressSpace *as;
961
962 if (flat_views) {
963 g_hash_table_unref(flat_views);
964 flat_views = NULL;
965 }
966 flatviews_init();
967
968 /* Render unique FVs */
969 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
970 MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
971
972 if (g_hash_table_lookup(flat_views, physmr)) {
973 continue;
974 }
975
976 generate_memory_topology(physmr);
977 }
978}
979
980static void address_space_set_flatview(AddressSpace *as)
b8af1afb 981{
67ace39b 982 FlatView *old_view = address_space_to_flatview(as);
967dc9b1
AK		 983 MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
984 FlatView *new_view = g_hash_table_lookup(flat_views, physmr);
985
986 assert(new_view);
987
67ace39b
AK		 988 if (old_view == new_view) {
989 return;
990 }
991
992 if (old_view) {
993 flatview_ref(old_view);
994 }
995
967dc9b1 996 flatview_ref(new_view);
9a62e24f
AK		 997
998 if (!QTAILQ_EMPTY(&as->listeners)) {
67ace39b
AK		 999 FlatView tmpview = { .nr = 0 }, *old_view2 = old_view;
1000
1001 if (!old_view2) {
1002 old_view2 = &tmpview;
1003 }
1004 address_space_update_topology_pass(as, old_view2, new_view, false);
1005 address_space_update_topology_pass(as, old_view2, new_view, true);
9a62e24f 1006 }
b8af1afb 1007
374f2981
PB		 1008 /* Writes are protected by the BQL. */
1009 atomic_rcu_set(&as->current_map, new_view);
67ace39b
AK		 1010 if (old_view) {
1011 flatview_unref(old_view);
1012 }
856d7245
PB		 1013
1014 /* Note that all the old MemoryRegions are still alive up to this
1015 * point. This relieves most MemoryListeners from the need to
1016 * ref/unref the MemoryRegions they get---unless they use them
1017 * outside the iothread mutex, in which case precise reference
1018 * counting is necessary.
1019 */
67ace39b
AK		 1020 if (old_view) {
1021 flatview_unref(old_view);
1022 }
093bc2cd
AK		 1023}
1024
202fc01b
AK		 1025static void address_space_update_topology(AddressSpace *as)
1026{
1027 MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
1028
1029 flatviews_init();
1030 if (!g_hash_table_lookup(flat_views, physmr)) {
1031 generate_memory_topology(physmr);
1032 }
1033 address_space_set_flatview(as);
1034}
1035
4ef4db86
AK		 1036void memory_region_transaction_begin(void)
1037{
bb880ded 1038 qemu_flush_coalesced_mmio_buffer();
4ef4db86
AK		 1039 ++memory_region_transaction_depth;
1040}
1041
1042void memory_region_transaction_commit(void)
1043{
0d673e36
AK		 1044 AddressSpace *as;
1045
4ef4db86 1046 assert(memory_region_transaction_depth);
8d04fb55
JK		 1047 assert(qemu_mutex_iothread_locked());
1048
4ef4db86 1049 --memory_region_transaction_depth;
4dc56152
GA		 1050 if (!memory_region_transaction_depth) {
1051 if (memory_region_update_pending) {
967dc9b1
AK		 1052 flatviews_reset();
1053
4dc56152 1054 MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
02e2b95f 1055
4dc56152 1056 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
967dc9b1 1057 address_space_set_flatview(as);
02218487 1058 address_space_update_ioeventfds(as);
4dc56152 1059 }
ade9c1aa 1060 memory_region_update_pending = false;
0b152095 1061 ioeventfd_update_pending = false;
4dc56152
GA		 1062 MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
1063 } else if (ioeventfd_update_pending) {
1064 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1065 address_space_update_ioeventfds(as);
1066 }
ade9c1aa 1067 ioeventfd_update_pending = false;
4dc56152 1068 }
4dc56152 1069 }
4ef4db86
AK		 1070}
1071
545e92e0
AK		 1072static void memory_region_destructor_none(MemoryRegion *mr)
1073{
1074}
1075
1076static void memory_region_destructor_ram(MemoryRegion *mr)
1077{
f1060c55 1078 qemu_ram_free(mr->ram_block);
545e92e0
AK		 1079}
1080
b4fefef9
PC		 1081static bool memory_region_need_escape(char c)
1082{
1083 return c == '/' || c == '[' || c == '\\' || c == ']';
1084}
1085
1086static char *memory_region_escape_name(const char *name)
1087{
1088 const char *p;
1089 char *escaped, *q;
1090 uint8_t c;
1091 size_t bytes = 0;
1092
1093 for (p = name; *p; p++) {
1094 bytes += memory_region_need_escape(*p) ? 4 : 1;
1095 }
1096 if (bytes == p - name) {
1097 return g_memdup(name, bytes + 1);
1098 }
1099
1100 escaped = g_malloc(bytes + 1);
1101 for (p = name, q = escaped; *p; p++) {
1102 c = *p;
1103 if (unlikely(memory_region_need_escape(c))) {
1104 *q++ = '\\';
1105 *q++ = 'x';
1106 *q++ = "0123456789abcdef"[c >> 4];
1107 c = "0123456789abcdef"[c & 15];
1108 }
1109 *q++ = c;
1110 }
1111 *q = 0;
1112 return escaped;
1113}
1114
3df9d748
AK		 1115static void memory_region_do_init(MemoryRegion *mr,
1116 Object *owner,
1117 const char *name,
1118 uint64_t size)
093bc2cd 1119{
08dafab4
AK		 1120 mr->size = int128_make64(size);
1121 if (size == UINT64_MAX) {
1122 mr->size = int128_2_64();
1123 }
302fa283 1124 mr->name = g_strdup(name);
612263cf 1125 mr->owner = owner;
58eaa217 1126 mr->ram_block = NULL;
b4fefef9
PC		 1127
1128 if (name) {
843ef73a
PC		 1129 char *escaped_name = memory_region_escape_name(name);
1130 char *name_array = g_strdup_printf("%s[*]", escaped_name);
612263cf
PB		 1131
1132 if (!owner) {
1133 owner = container_get(qdev_get_machine(), "/unattached");
1134 }
1135
843ef73a 1136 object_property_add_child(owner, name_array, OBJECT(mr), &error_abort);
b4fefef9 1137 object_unref(OBJECT(mr));
843ef73a
PC		 1138 g_free(name_array);
1139 g_free(escaped_name);
b4fefef9
PC		 1140 }
1141}
1142
3df9d748
AK		 1143void memory_region_init(MemoryRegion *mr,
1144 Object *owner,
1145 const char *name,
1146 uint64_t size)
1147{
1148 object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
1149 memory_region_do_init(mr, owner, name, size);
1150}
1151
d7bce999
EB		 1152static void memory_region_get_addr(Object *obj, Visitor *v, const char *name,
1153 void *opaque, Error **errp)
409ddd01
PC		 1154{
1155 MemoryRegion *mr = MEMORY_REGION(obj);
1156 uint64_t value = mr->addr;
1157
51e72bc1 1158 visit_type_uint64(v, name, &value, errp);
409ddd01
PC		 1159}
1160
d7bce999
EB		 1161static void memory_region_get_container(Object *obj, Visitor *v,
1162 const char *name, void *opaque,
1163 Error **errp)
409ddd01
PC		 1164{
1165 MemoryRegion *mr = MEMORY_REGION(obj);
1166 gchar *path = (gchar *)"";
1167
1168 if (mr->container) {
1169 path = object_get_canonical_path(OBJECT(mr->container));
1170 }
51e72bc1 1171 visit_type_str(v, name, &path, errp);
409ddd01
PC		 1172 if (mr->container) {
1173 g_free(path);
1174 }
1175}
1176
1177static Object *memory_region_resolve_container(Object *obj, void *opaque,
1178 const char *part)
1179{
1180 MemoryRegion *mr = MEMORY_REGION(obj);
1181
1182 return OBJECT(mr->container);
1183}
1184
d7bce999
EB		 1185static void memory_region_get_priority(Object *obj, Visitor *v,
1186 const char *name, void *opaque,
1187 Error **errp)
d33382da
PC		 1188{
1189 MemoryRegion *mr = MEMORY_REGION(obj);
1190 int32_t value = mr->priority;
1191
51e72bc1 1192 visit_type_int32(v, name, &value, errp);
d33382da
PC		 1193}
1194
d7bce999
EB		 1195static void memory_region_get_size(Object *obj, Visitor *v, const char *name,
1196 void *opaque, Error **errp)
52aef7bb
PC		 1197{
1198 MemoryRegion *mr = MEMORY_REGION(obj);
1199 uint64_t value = memory_region_size(mr);
1200
51e72bc1 1201 visit_type_uint64(v, name, &value, errp);
52aef7bb
PC		 1202}
1203
b4fefef9
PC		 1204static void memory_region_initfn(Object *obj)
1205{
1206 MemoryRegion *mr = MEMORY_REGION(obj);
409ddd01 1207 ObjectProperty *op;
b4fefef9
PC		 1208
1209 mr->ops = &unassigned_mem_ops;
6bba19ba 1210 mr->enabled = true;
5f9a5ea1 1211 mr->romd_mode = true;
196ea131 1212 mr->global_locking = true;
545e92e0 1213 mr->destructor = memory_region_destructor_none;
093bc2cd 1214 QTAILQ_INIT(&mr->subregions);
093bc2cd 1215 QTAILQ_INIT(&mr->coalesced);
409ddd01
PC		 1216
1217 op = object_property_add(OBJECT(mr), "container",
1218 "link<" TYPE_MEMORY_REGION ">",
1219 memory_region_get_container,
1220 NULL, /* memory_region_set_container */
1221 NULL, NULL, &error_abort);
1222 op->resolve = memory_region_resolve_container;
1223
1224 object_property_add(OBJECT(mr), "addr", "uint64",
1225 memory_region_get_addr,
1226 NULL, /* memory_region_set_addr */
1227 NULL, NULL, &error_abort);
d33382da
PC		 1228 object_property_add(OBJECT(mr), "priority", "uint32",
1229 memory_region_get_priority,
1230 NULL, /* memory_region_set_priority */
1231 NULL, NULL, &error_abort);
52aef7bb
PC		 1232 object_property_add(OBJECT(mr), "size", "uint64",
1233 memory_region_get_size,
1234 NULL, /* memory_region_set_size, */
1235 NULL, NULL, &error_abort);
093bc2cd
AK		 1236}
1237
3df9d748
AK		 1238static void iommu_memory_region_initfn(Object *obj)
1239{
1240 MemoryRegion *mr = MEMORY_REGION(obj);
1241
1242 mr->is_iommu = true;
1243}
1244
b018ddf6
PB		 1245static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
1246 unsigned size)
1247{
1248#ifdef DEBUG_UNASSIGNED
1249 printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
1250#endif
4917cf44 1251 if (current_cpu != NULL) {
dbea78a4
PM		 1252 bool is_exec = current_cpu->mem_io_access_type == MMU_INST_FETCH;
1253 cpu_unassigned_access(current_cpu, addr, false, is_exec, 0, size);
c658b94f 1254 }
68a7439a 1255 return 0;
b018ddf6
PB		 1256}
1257
1258static void unassigned_mem_write(void *opaque, hwaddr addr,
1259 uint64_t val, unsigned size)
1260{
1261#ifdef DEBUG_UNASSIGNED
1262 printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val);
1263#endif
4917cf44
AF		 1264 if (current_cpu != NULL) {
1265 cpu_unassigned_access(current_cpu, addr, true, false, 0, size);
c658b94f 1266 }
b018ddf6
PB		 1267}
1268
d197063f 1269static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
8372d383
PM		 1270 unsigned size, bool is_write,
1271 MemTxAttrs attrs)
d197063f
PB		 1272{
1273 return false;
1274}
1275
1276const MemoryRegionOps unassigned_mem_ops = {
1277 .valid.accepts = unassigned_mem_accepts,
1278 .endianness = DEVICE_NATIVE_ENDIAN,
1279};
1280
4a2e242b
AW		 1281static uint64_t memory_region_ram_device_read(void *opaque,
1282 hwaddr addr, unsigned size)
1283{
1284 MemoryRegion *mr = opaque;
1285 uint64_t data = (uint64_t)~0;
1286
1287 switch (size) {
1288 case 1:
1289 data = *(uint8_t *)(mr->ram_block->host + addr);
1290 break;
1291 case 2:
1292 data = *(uint16_t *)(mr->ram_block->host + addr);
1293 break;
1294 case 4:
1295 data = *(uint32_t *)(mr->ram_block->host + addr);
1296 break;
1297 case 8:
1298 data = *(uint64_t *)(mr->ram_block->host + addr);
1299 break;
1300 }
1301
1302 trace_memory_region_ram_device_read(get_cpu_index(), mr, addr, data, size);
1303
1304 return data;
1305}
1306
1307static void memory_region_ram_device_write(void *opaque, hwaddr addr,
1308 uint64_t data, unsigned size)
1309{
1310 MemoryRegion *mr = opaque;
1311
1312 trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size);
1313
1314 switch (size) {
1315 case 1:
1316 *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data;
1317 break;
1318 case 2:
1319 *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data;
1320 break;
1321 case 4:
1322 *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data;
1323 break;
1324 case 8:
1325 *(uint64_t *)(mr->ram_block->host + addr) = data;
1326 break;
1327 }
1328}
1329
1330static const MemoryRegionOps ram_device_mem_ops = {
1331 .read = memory_region_ram_device_read,
1332 .write = memory_region_ram_device_write,
c99a29e7 1333 .endianness = DEVICE_HOST_ENDIAN,
4a2e242b
AW		 1334 .valid = {
1335 .min_access_size = 1,
1336 .max_access_size = 8,
1337 .unaligned = true,
1338 },
1339 .impl = {
1340 .min_access_size = 1,
1341 .max_access_size = 8,
1342 .unaligned = true,
1343 },
1344};
1345
d2702032
PB		 1346bool memory_region_access_valid(MemoryRegion *mr,
1347 hwaddr addr,
1348 unsigned size,
6d7b9a6c
PM		 1349 bool is_write,
1350 MemTxAttrs attrs)
093bc2cd 1351{
a014ed07
PB		 1352 int access_size_min, access_size_max;
1353 int access_size, i;
897fa7cf 1354
093bc2cd
AK		 1355 if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
1356 return false;
1357 }
1358
a014ed07 1359 if (!mr->ops->valid.accepts) {
093bc2cd
AK		 1360 return true;
1361 }
1362
a014ed07
PB		 1363 access_size_min = mr->ops->valid.min_access_size;
1364 if (!mr->ops->valid.min_access_size) {
1365 access_size_min = 1;
1366 }
1367
1368 access_size_max = mr->ops->valid.max_access_size;
1369 if (!mr->ops->valid.max_access_size) {
1370 access_size_max = 4;
1371 }
1372
1373 access_size = MAX(MIN(size, access_size_max), access_size_min);
1374 for (i = 0; i < size; i += access_size) {
1375 if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
8372d383 1376 is_write, attrs)) {
a014ed07
PB		 1377 return false;
1378 }
093bc2cd 1379 }
a014ed07 1380
093bc2cd
AK		 1381 return true;
1382}
1383
cc05c43a
PM		 1384static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
1385 hwaddr addr,
1386 uint64_t *pval,
1387 unsigned size,
1388 MemTxAttrs attrs)
093bc2cd 1389{
cc05c43a 1390 *pval = 0;
093bc2cd 1391
ce5d2f33 1392 if (mr->ops->read) {
cc05c43a
PM		 1393 return access_with_adjusted_size(addr, pval, size,
1394 mr->ops->impl.min_access_size,
1395 mr->ops->impl.max_access_size,
1396 memory_region_read_accessor,
1397 mr, attrs);
1398 } else if (mr->ops->read_with_attrs) {
1399 return access_with_adjusted_size(addr, pval, size,
1400 mr->ops->impl.min_access_size,
1401 mr->ops->impl.max_access_size,
1402 memory_region_read_with_attrs_accessor,
1403 mr, attrs);
ce5d2f33 1404 } else {
cc05c43a
PM		 1405 return access_with_adjusted_size(addr, pval, size, 1, 4,
1406 memory_region_oldmmio_read_accessor,
1407 mr, attrs);
74901c3b 1408 }
093bc2cd
AK		 1409}
1410
3b643495
PM		 1411MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
1412 hwaddr addr,
1413 uint64_t *pval,
1414 unsigned size,
1415 MemTxAttrs attrs)
a621f38d 1416{
cc05c43a
PM		 1417 MemTxResult r;
1418
6d7b9a6c 1419 if (!memory_region_access_valid(mr, addr, size, false, attrs)) {
791af8c8 1420 *pval = unassigned_mem_read(mr, addr, size);
cc05c43a 1421 return MEMTX_DECODE_ERROR;
791af8c8 1422 }
a621f38d 1423
cc05c43a 1424 r = memory_region_dispatch_read1(mr, addr, pval, size, attrs);
791af8c8 1425 adjust_endianness(mr, pval, size);
cc05c43a 1426 return r;
a621f38d 1427}
093bc2cd 1428
8c56c1a5
PF		 1429/* Return true if an eventfd was signalled */
1430static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr,
1431 hwaddr addr,
1432 uint64_t data,
1433 unsigned size,
1434 MemTxAttrs attrs)
1435{
1436 MemoryRegionIoeventfd ioeventfd = {
1437 .addr = addrrange_make(int128_make64(addr), int128_make64(size)),
1438 .data = data,
1439 };
1440 unsigned i;
1441
1442 for (i = 0; i < mr->ioeventfd_nb; i++) {
1443 ioeventfd.match_data = mr->ioeventfds[i].match_data;
1444 ioeventfd.e = mr->ioeventfds[i].e;
1445
73bb753d 1446 if (memory_region_ioeventfd_equal(&ioeventfd, &mr->ioeventfds[i])) {
8c56c1a5
PF		 1447 event_notifier_set(ioeventfd.e);
1448 return true;
1449 }
1450 }
1451
1452 return false;
1453}
1454
3b643495
PM		 1455MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
1456 hwaddr addr,
1457 uint64_t data,
1458 unsigned size,
1459 MemTxAttrs attrs)
a621f38d 1460{
6d7b9a6c 1461 if (!memory_region_access_valid(mr, addr, size, true, attrs)) {
b018ddf6 1462 unassigned_mem_write(mr, addr, data, size);
cc05c43a 1463 return MEMTX_DECODE_ERROR;
093bc2cd
AK		 1464 }
1465
a621f38d
AK		 1466 adjust_endianness(mr, &data, size);
1467
8c56c1a5
PF		 1468 if ((!kvm_eventfds_enabled()) &&
1469 memory_region_dispatch_write_eventfds(mr, addr, data, size, attrs)) {
1470 return MEMTX_OK;
1471 }
1472
ce5d2f33 1473 if (mr->ops->write) {
cc05c43a
PM		 1474 return access_with_adjusted_size(addr, &data, size,
1475 mr->ops->impl.min_access_size,
1476 mr->ops->impl.max_access_size,
1477 memory_region_write_accessor, mr,
1478 attrs);
1479 } else if (mr->ops->write_with_attrs) {
1480 return
1481 access_with_adjusted_size(addr, &data, size,
1482 mr->ops->impl.min_access_size,
1483 mr->ops->impl.max_access_size,
1484 memory_region_write_with_attrs_accessor,
1485 mr, attrs);
ce5d2f33 1486 } else {
cc05c43a
PM		 1487 return access_with_adjusted_size(addr, &data, size, 1, 4,
1488 memory_region_oldmmio_write_accessor,
1489 mr, attrs);
74901c3b 1490 }
093bc2cd
AK		 1491}
1492
093bc2cd 1493void memory_region_init_io(MemoryRegion *mr,
2c9b15ca 1494 Object *owner,
093bc2cd
AK		 1495 const MemoryRegionOps *ops,
1496 void *opaque,
1497 const char *name,
1498 uint64_t size)
1499{
2c9b15ca 1500 memory_region_init(mr, owner, name, size);
6d6d2abf 1501 mr->ops = ops ? ops : &unassigned_mem_ops;
093bc2cd 1502 mr->opaque = opaque;
14a3c10a 1503 mr->terminates = true;
093bc2cd
AK		 1504}
1505
1cfe48c1
PM		 1506void memory_region_init_ram_nomigrate(MemoryRegion *mr,
1507 Object *owner,
1508 const char *name,
1509 uint64_t size,
1510 Error **errp)
06329cce
MA		 1511{
1512 memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
1513}
1514
1515void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
1516 Object *owner,
1517 const char *name,
1518 uint64_t size,
1519 bool share,
1520 Error **errp)
093bc2cd 1521{
2c9b15ca 1522 memory_region_init(mr, owner, name, size);
8ea9252a 1523 mr->ram = true;
14a3c10a 1524 mr->terminates = true;
545e92e0 1525 mr->destructor = memory_region_destructor_ram;
06329cce 1526 mr->ram_block = qemu_ram_alloc(size, share, mr, errp);
677e7805 1527 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
0b183fc8
PB		 1528}
1529
60786ef3
MT		 1530void memory_region_init_resizeable_ram(MemoryRegion *mr,
1531 Object *owner,
1532 const char *name,
1533 uint64_t size,
1534 uint64_t max_size,
1535 void (*resized)(const char*,
1536 uint64_t length,
1537 void *host),
1538 Error **errp)
1539{
1540 memory_region_init(mr, owner, name, size);
1541 mr->ram = true;
1542 mr->terminates = true;
1543 mr->destructor = memory_region_destructor_ram;
8e41fb63
FZ		 1544 mr->ram_block = qemu_ram_alloc_resizeable(size, max_size, resized,
1545 mr, errp);
677e7805 1546 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
60786ef3
MT		 1547}
1548
0b183fc8
PB		 1549#ifdef __linux__
1550void memory_region_init_ram_from_file(MemoryRegion *mr,
1551 struct Object *owner,
1552 const char *name,
1553 uint64_t size,
98376843 1554 uint64_t align,
dbcb8981 1555 bool share,
7f56e740
PB		 1556 const char *path,
1557 Error **errp)
0b183fc8
PB		 1558{
1559 memory_region_init(mr, owner, name, size);
1560 mr->ram = true;
1561 mr->terminates = true;
1562 mr->destructor = memory_region_destructor_ram;
98376843 1563 mr->align = align;
8e41fb63 1564 mr->ram_block = qemu_ram_alloc_from_file(size, mr, share, path, errp);
677e7805 1565 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
093bc2cd 1566}
fea617c5
MAL		 1567
1568void memory_region_init_ram_from_fd(MemoryRegion *mr,
1569 struct Object *owner,
1570 const char *name,
1571 uint64_t size,
1572 bool share,
1573 int fd,
1574 Error **errp)
1575{
1576 memory_region_init(mr, owner, name, size);
1577 mr->ram = true;
1578 mr->terminates = true;
1579 mr->destructor = memory_region_destructor_ram;
1580 mr->ram_block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp);
1581 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
1582}
0b183fc8 1583#endif
093bc2cd
AK		 1584
1585void memory_region_init_ram_ptr(MemoryRegion *mr,
2c9b15ca 1586 Object *owner,
093bc2cd
AK		 1587 const char *name,
1588 uint64_t size,
1589 void *ptr)
1590{
2c9b15ca 1591 memory_region_init(mr, owner, name, size);
8ea9252a 1592 mr->ram = true;
14a3c10a 1593 mr->terminates = true;
fc3e7665 1594 mr->destructor = memory_region_destructor_ram;
677e7805 1595 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
ef701d7b
HT		 1596
1597 /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
1598 assert(ptr != NULL);
8e41fb63 1599 mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
093bc2cd
AK		 1600}
1601
21e00fa5
AW		 1602void memory_region_init_ram_device_ptr(MemoryRegion *mr,
1603 Object *owner,
1604 const char *name,
1605 uint64_t size,
1606 void *ptr)
e4dc3f59 1607{
21e00fa5
AW		 1608 memory_region_init_ram_ptr(mr, owner, name, size, ptr);
1609 mr->ram_device = true;
4a2e242b
AW		 1610 mr->ops = &ram_device_mem_ops;
1611 mr->opaque = mr;
e4dc3f59
ND		 1612}
1613
093bc2cd 1614void memory_region_init_alias(MemoryRegion *mr,
2c9b15ca 1615 Object *owner,
093bc2cd
AK		 1616 const char *name,
1617 MemoryRegion *orig,
a8170e5e 1618 hwaddr offset,
093bc2cd
AK		 1619 uint64_t size)
1620{
2c9b15ca 1621 memory_region_init(mr, owner, name, size);
093bc2cd
AK		 1622 mr->alias = orig;
1623 mr->alias_offset = offset;
1624}
1625
b59821a9
PM		 1626void memory_region_init_rom_nomigrate(MemoryRegion *mr,
1627 struct Object *owner,
1628 const char *name,
1629 uint64_t size,
1630 Error **errp)
a1777f7f
PM		 1631{
1632 memory_region_init(mr, owner, name, size);
1633 mr->ram = true;
1634 mr->readonly = true;
1635 mr->terminates = true;
1636 mr->destructor = memory_region_destructor_ram;
06329cce 1637 mr->ram_block = qemu_ram_alloc(size, false, mr, errp);
a1777f7f
PM		 1638 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
1639}
1640
b59821a9
PM		 1641void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
1642 Object *owner,
1643 const MemoryRegionOps *ops,
1644 void *opaque,
1645 const char *name,
1646 uint64_t size,
1647 Error **errp)
d0a9b5bc 1648{
39e0b03d 1649 assert(ops);
2c9b15ca 1650 memory_region_init(mr, owner, name, size);
7bc2b9cd 1651 mr->ops = ops;
75f5941c 1652 mr->opaque = opaque;
d0a9b5bc 1653 mr->terminates = true;
75c578dc 1654 mr->rom_device = true;
58268c8d 1655 mr->destructor = memory_region_destructor_ram;
06329cce 1656 mr->ram_block = qemu_ram_alloc(size, false, mr, errp);
d0a9b5bc
AK		 1657}
1658
1221a474
AK		 1659void memory_region_init_iommu(void *_iommu_mr,
1660 size_t instance_size,
1661 const char *mrtypename,
2c9b15ca 1662 Object *owner,
30951157
AK		 1663 const char *name,
1664 uint64_t size)
1665{
1221a474 1666 struct IOMMUMemoryRegion *iommu_mr;
3df9d748
AK		 1667 struct MemoryRegion *mr;
1668
1221a474
AK		 1669 object_initialize(_iommu_mr, instance_size, mrtypename);
1670 mr = MEMORY_REGION(_iommu_mr);
3df9d748
AK		 1671 memory_region_do_init(mr, owner, name, size);
1672 iommu_mr = IOMMU_MEMORY_REGION(mr);
30951157 1673 mr->terminates = true; /* then re-forwards */
3df9d748
AK		 1674 QLIST_INIT(&iommu_mr->iommu_notify);
1675 iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE;
30951157
AK		 1676}
1677
b4fefef9 1678static void memory_region_finalize(Object *obj)
093bc2cd 1679{
b4fefef9
PC		 1680 MemoryRegion *mr = MEMORY_REGION(obj);
1681
2e2b8eb7
PB		 1682 assert(!mr->container);
1683
1684 /* We know the region is not visible in any address space (it
1685 * does not have a container and cannot be a root either because
1686 * it has no references, so we can blindly clear mr->enabled.
1687 * memory_region_set_enabled instead could trigger a transaction
1688 * and cause an infinite loop.
1689 */
1690 mr->enabled = false;
1691 memory_region_transaction_begin();
1692 while (!QTAILQ_EMPTY(&mr->subregions)) {
1693 MemoryRegion *subregion = QTAILQ_FIRST(&mr->subregions);
1694 memory_region_del_subregion(mr, subregion);
1695 }
1696 memory_region_transaction_commit();
1697
545e92e0 1698 mr->destructor(mr);
093bc2cd 1699 memory_region_clear_coalescing(mr);
302fa283 1700 g_free((char *)mr->name);
7267c094 1701 g_free(mr->ioeventfds);
093bc2cd
AK		 1702}
1703
803c0816
PB		 1704Object *memory_region_owner(MemoryRegion *mr)
1705{
22a893e4
PB		 1706 Object *obj = OBJECT(mr);
1707 return obj->parent;
803c0816
PB		 1708}
1709
46637be2
PB		 1710void memory_region_ref(MemoryRegion *mr)
1711{
22a893e4
PB		 1712 /* MMIO callbacks most likely will access data that belongs
1713 * to the owner, hence the need to ref/unref the owner whenever
1714 * the memory region is in use.
1715 *
1716 * The memory region is a child of its owner. As long as the
1717 * owner doesn't call unparent itself on the memory region,
1718 * ref-ing the owner will also keep the memory region alive.
612263cf
PB		 1719 * Memory regions without an owner are supposed to never go away;
1720 * we do not ref/unref them because it slows down DMA sensibly.
22a893e4 1721 */
612263cf
PB		 1722 if (mr && mr->owner) {
1723 object_ref(mr->owner);
46637be2
PB		 1724 }
1725}
1726
1727void memory_region_unref(MemoryRegion *mr)
1728{
612263cf
PB		 1729 if (mr && mr->owner) {
1730 object_unref(mr->owner);
46637be2
PB		 1731 }
1732}
1733
093bc2cd
AK		 1734uint64_t memory_region_size(MemoryRegion *mr)
1735{
08dafab4
AK		 1736 if (int128_eq(mr->size, int128_2_64())) {
1737 return UINT64_MAX;
1738 }
1739 return int128_get64(mr->size);
093bc2cd
AK		 1740}
1741
5d546d4b 1742const char *memory_region_name(const MemoryRegion *mr)
8991c79b 1743{
d1dd32af
PC		 1744 if (!mr->name) {
1745 ((MemoryRegion *)mr)->name =
1746 object_get_canonical_path_component(OBJECT(mr));
1747 }
302fa283 1748 return mr->name;
8991c79b
AK		 1749}
1750
21e00fa5 1751bool memory_region_is_ram_device(MemoryRegion *mr)
e4dc3f59 1752{
21e00fa5 1753 return mr->ram_device;
e4dc3f59
ND		 1754}
1755
2d1a35be 1756uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
55043ba3 1757{
6f6a5ef3 1758 uint8_t mask = mr->dirty_log_mask;
adaad61c 1759 if (global_dirty_log && mr->ram_block) {
6f6a5ef3
PB		 1760 mask |= (1 << DIRTY_MEMORY_MIGRATION);
1761 }
1762 return mask;
55043ba3
AK		 1763}
1764
2d1a35be
PB		 1765bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
1766{
1767 return memory_region_get_dirty_log_mask(mr) & (1 << client);
1768}
1769
3df9d748 1770static void memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr)
5bf3d319
PX		 1771{
1772 IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE;
1773 IOMMUNotifier *iommu_notifier;
1221a474 1774 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
5bf3d319 1775
3df9d748 1776 IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
5bf3d319
PX		 1777 flags |= iommu_notifier->notifier_flags;
1778 }
1779
1221a474
AK		 1780 if (flags != iommu_mr->iommu_notify_flags && imrc->notify_flag_changed) {
1781 imrc->notify_flag_changed(iommu_mr,
1782 iommu_mr->iommu_notify_flags,
1783 flags);
5bf3d319
PX		 1784 }
1785
3df9d748 1786 iommu_mr->iommu_notify_flags = flags;
5bf3d319
PX		 1787}
1788
cdb30812
PX		 1789void memory_region_register_iommu_notifier(MemoryRegion *mr,
1790 IOMMUNotifier *n)
06866575 1791{
3df9d748
AK		 1792 IOMMUMemoryRegion *iommu_mr;
1793
efcd38c5
JW		 1794 if (mr->alias) {
1795 memory_region_register_iommu_notifier(mr->alias, n);
1796 return;
1797 }
1798
cdb30812 1799 /* We need to register for at least one bitfield */
3df9d748 1800 iommu_mr = IOMMU_MEMORY_REGION(mr);
cdb30812 1801 assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
698feb5e 1802 assert(n->start <= n->end);
cb1efcf4
PM		 1803 assert(n->iommu_idx >= 0 &&
1804 n->iommu_idx < memory_region_iommu_num_indexes(iommu_mr));
1805
3df9d748
AK		 1806 QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node);
1807 memory_region_update_iommu_notify_flags(iommu_mr);
06866575
DG		 1808}
1809
3df9d748 1810uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr)
a788f227 1811{
1221a474
AK		 1812 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1813
1814 if (imrc->get_min_page_size) {
1815 return imrc->get_min_page_size(iommu_mr);
f682e9c2
AK		 1816 }
1817 return TARGET_PAGE_SIZE;
1818}
1819
3df9d748 1820void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
f682e9c2 1821{
3df9d748 1822 MemoryRegion *mr = MEMORY_REGION(iommu_mr);
1221a474 1823 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
f682e9c2 1824 hwaddr addr, granularity;
a788f227
DG		 1825 IOMMUTLBEntry iotlb;
1826
faa362e3 1827 /* If the IOMMU has its own replay callback, override */
1221a474
AK		 1828 if (imrc->replay) {
1829 imrc->replay(iommu_mr, n);
faa362e3
PX		 1830 return;
1831 }
1832
3df9d748 1833 granularity = memory_region_iommu_get_min_page_size(iommu_mr);
f682e9c2 1834
a788f227 1835 for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
2c91bcf2 1836 iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE, n->iommu_idx);
a788f227
DG		 1837 if (iotlb.perm != IOMMU_NONE) {
1838 n->notify(n, &iotlb);
1839 }
1840
1841 /* if (2^64 - MR size) < granularity, it's possible to get an
1842 * infinite loop here. This should catch such a wraparound */
1843 if ((addr + granularity) < addr) {
1844 break;
1845 }
1846 }
1847}
1848
3df9d748 1849void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr)
de472e4a
PX		 1850{
1851 IOMMUNotifier *notifier;
1852
3df9d748
AK		 1853 IOMMU_NOTIFIER_FOREACH(notifier, iommu_mr) {
1854 memory_region_iommu_replay(iommu_mr, notifier);
de472e4a
PX		 1855 }
1856}
1857
cdb30812
PX		 1858void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
1859 IOMMUNotifier *n)
06866575 1860{
3df9d748
AK		 1861 IOMMUMemoryRegion *iommu_mr;
1862
efcd38c5
JW		 1863 if (mr->alias) {
1864 memory_region_unregister_iommu_notifier(mr->alias, n);
1865 return;
1866 }
cdb30812 1867 QLIST_REMOVE(n, node);
3df9d748
AK		 1868 iommu_mr = IOMMU_MEMORY_REGION(mr);
1869 memory_region_update_iommu_notify_flags(iommu_mr);
06866575
DG		 1870}
1871
bd2bfa4c
PX		 1872void memory_region_notify_one(IOMMUNotifier *notifier,
1873 IOMMUTLBEntry *entry)
06866575 1874{
cdb30812
PX		 1875 IOMMUNotifierFlag request_flags;
1876
bd2bfa4c
PX		 1877 /*
1878 * Skip the notification if the notification does not overlap
1879 * with registered range.
1880 */
b021d1c0 1881 if (notifier->start > entry->iova + entry->addr_mask ||
bd2bfa4c
PX		 1882 notifier->end < entry->iova) {
1883 return;
1884 }
cdb30812 1885
bd2bfa4c 1886 if (entry->perm & IOMMU_RW) {
cdb30812
PX		 1887 request_flags = IOMMU_NOTIFIER_MAP;
1888 } else {
1889 request_flags = IOMMU_NOTIFIER_UNMAP;
1890 }
1891
bd2bfa4c
PX		 1892 if (notifier->notifier_flags & request_flags) {
1893 notifier->notify(notifier, entry);
1894 }
1895}
1896
3df9d748 1897void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
cb1efcf4 1898 int iommu_idx,
bd2bfa4c
PX		 1899 IOMMUTLBEntry entry)
1900{
1901 IOMMUNotifier *iommu_notifier;
1902
3df9d748 1903 assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr)));
bd2bfa4c 1904
3df9d748 1905 IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
cb1efcf4
PM		 1906 if (iommu_notifier->iommu_idx == iommu_idx) {
1907 memory_region_notify_one(iommu_notifier, &entry);
1908 }
cdb30812 1909 }
06866575
DG		 1910}
1911
f1334de6
AK		 1912int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr,
1913 enum IOMMUMemoryRegionAttr attr,
1914 void *data)
1915{
1916 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1917
1918 if (!imrc->get_attr) {
1919 return -EINVAL;
1920 }
1921
1922 return imrc->get_attr(iommu_mr, attr, data);
1923}
1924
21f40209
PM		 1925int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr,
1926 MemTxAttrs attrs)
1927{
1928 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1929
1930 if (!imrc->attrs_to_index) {
1931 return 0;
1932 }
1933
1934 return imrc->attrs_to_index(iommu_mr, attrs);
1935}
1936
1937int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr)
1938{
1939 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1940
1941 if (!imrc->num_indexes) {
1942 return 1;
1943 }
1944
1945 return imrc->num_indexes(iommu_mr);
1946}
1947
093bc2cd
AK		 1948void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
1949{
5a583347 1950 uint8_t mask = 1 << client;
deb809ed 1951 uint8_t old_logging;
5a583347 1952
dbddac6d 1953 assert(client == DIRTY_MEMORY_VGA);
deb809ed
PB		 1954 old_logging = mr->vga_logging_count;
1955 mr->vga_logging_count += log ? 1 : -1;
1956 if (!!old_logging == !!mr->vga_logging_count) {
1957 return;
1958 }
1959
59023ef4 1960 memory_region_transaction_begin();
5a583347 1961 mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
22bde714 1962 memory_region_update_pending |= mr->enabled;
59023ef4 1963 memory_region_transaction_commit();
093bc2cd
AK		 1964}
1965
a8170e5e
AK		 1966bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
1967 hwaddr size, unsigned client)
093bc2cd 1968{
8e41fb63
FZ		 1969 assert(mr->ram_block);
1970 return cpu_physical_memory_get_dirty(memory_region_get_ram_addr(mr) + addr,
1971 size, client);
093bc2cd
AK		 1972}
1973
a8170e5e
AK		 1974void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
1975 hwaddr size)
093bc2cd 1976{
8e41fb63
FZ		 1977 assert(mr->ram_block);
1978 cpu_physical_memory_set_dirty_range(memory_region_get_ram_addr(mr) + addr,
1979 size,
58d2707e 1980 memory_region_get_dirty_log_mask(mr));
093bc2cd
AK		 1981}
1982
0fe1eca7 1983static void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
093bc2cd 1984{
0a752eee 1985 MemoryListener *listener;
0d673e36 1986 AddressSpace *as;
0a752eee 1987 FlatView *view;
5a583347
AK		 1988 FlatRange *fr;
1989
0a752eee
PB		 1990 /* If the same address space has multiple log_sync listeners, we
1991 * visit that address space's FlatView multiple times. But because
1992 * log_sync listeners are rare, it's still cheaper than walking each
1993 * address space once.
1994 */
1995 QTAILQ_FOREACH(listener, &memory_listeners, link) {
1996 if (!listener->log_sync) {
1997 continue;
1998 }
1999 as = listener->address_space;
2000 view = address_space_get_flatview(as);
99e86347 2001 FOR_EACH_FLAT_RANGE(fr, view) {
3ebb1817 2002 if (fr->dirty_log_mask && (!mr || fr->mr == mr)) {
16620684 2003 MemoryRegionSection mrs = section_from_flat_range(fr, view);
0a752eee 2004 listener->log_sync(listener, &mrs);
0d673e36 2005 }
5a583347 2006 }
856d7245 2007 flatview_unref(view);
5a583347 2008 }
093bc2cd
AK		 2009}
2010
0fe1eca7
PB		 2011DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr,
2012 hwaddr addr,
2013 hwaddr size,
2014 unsigned client)
2015{
2016 assert(mr->ram_block);
2017 memory_region_sync_dirty_bitmap(mr);
2018 return cpu_physical_memory_snapshot_and_clear_dirty(
2019 memory_region_get_ram_addr(mr) + addr, size, client);
2020}
2021
2022bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap,
2023 hwaddr addr, hwaddr size)
2024{
2025 assert(mr->ram_block);
2026 return cpu_physical_memory_snapshot_get_dirty(snap,
2027 memory_region_get_ram_addr(mr) + addr, size);
2028}
2029
093bc2cd
AK		 2030void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
2031{
fb1cd6f9 2032 if (mr->readonly != readonly) {
59023ef4 2033 memory_region_transaction_begin();
fb1cd6f9 2034 mr->readonly = readonly;
22bde714 2035 memory_region_update_pending |= mr->enabled;
59023ef4 2036 memory_region_transaction_commit();
fb1cd6f9 2037 }
093bc2cd
AK		 2038}
2039
5f9a5ea1 2040void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
d0a9b5bc 2041{
5f9a5ea1 2042 if (mr->romd_mode != romd_mode) {
59023ef4 2043 memory_region_transaction_begin();
5f9a5ea1 2044 mr->romd_mode = romd_mode;
22bde714 2045 memory_region_update_pending |= mr->enabled;
59023ef4 2046 memory_region_transaction_commit();
d0a9b5bc
AK		 2047 }
2048}
2049
a8170e5e
AK		 2050void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
2051 hwaddr size, unsigned client)
093bc2cd 2052{
8e41fb63
FZ		 2053 assert(mr->ram_block);
2054 cpu_physical_memory_test_and_clear_dirty(
2055 memory_region_get_ram_addr(mr) + addr, size, client);
093bc2cd
AK		 2056}
2057
a35ba7be
PB		 2058int memory_region_get_fd(MemoryRegion *mr)
2059{
4ff87573
PB		 2060 int fd;
2061
2062 rcu_read_lock();
2063 while (mr->alias) {
2064 mr = mr->alias;
a35ba7be 2065 }
4ff87573
PB		 2066 fd = mr->ram_block->fd;
2067 rcu_read_unlock();
a35ba7be 2068
4ff87573
PB		 2069 return fd;
2070}
a35ba7be 2071
093bc2cd
AK		 2072void *memory_region_get_ram_ptr(MemoryRegion *mr)
2073{
49b24afc
PB		 2074 void *ptr;
2075 uint64_t offset = 0;
093bc2cd 2076
49b24afc
PB		 2077 rcu_read_lock();
2078 while (mr->alias) {
2079 offset += mr->alias_offset;
2080 mr = mr->alias;
2081 }
8e41fb63 2082 assert(mr->ram_block);
0878d0e1 2083 ptr = qemu_map_ram_ptr(mr->ram_block, offset);
49b24afc 2084 rcu_read_unlock();
093bc2cd 2085
0878d0e1 2086 return ptr;
093bc2cd
AK		 2087}
2088
07bdaa41
PB		 2089MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset)
2090{
2091 RAMBlock *block;
2092
2093 block = qemu_ram_block_from_host(ptr, false, offset);
2094 if (!block) {
2095 return NULL;
2096 }
2097
2098 return block->mr;
2099}
2100
7ebb2745
FZ		 2101ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
2102{
2103 return mr->ram_block ? mr->ram_block->offset : RAM_ADDR_INVALID;
2104}
2105
37d7c084
PB		 2106void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
2107{
8e41fb63 2108 assert(mr->ram_block);
37d7c084 2109
fa53a0e5 2110 qemu_ram_resize(mr->ram_block, newsize, errp);
37d7c084
PB		 2111}
2112
0d673e36 2113static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
093bc2cd 2114{
99e86347 2115 FlatView *view;
093bc2cd
AK		 2116 FlatRange *fr;
2117 CoalescedMemoryRange *cmr;
2118 AddrRange tmp;
95d2994a 2119 MemoryRegionSection section;
093bc2cd 2120
856d7245 2121 view = address_space_get_flatview(as);
99e86347 2122 FOR_EACH_FLAT_RANGE(fr, view) {
093bc2cd 2123 if (fr->mr == mr) {
95d2994a 2124 section = (MemoryRegionSection) {
16620684 2125 .fv = view,
95d2994a 2126 .offset_within_address_space = int128_get64(fr->addr.start),
052e87b0 2127 .size = fr->addr.size,
95d2994a
AK		 2128 };
2129
9a54635d 2130 MEMORY_LISTENER_CALL(as, coalesced_mmio_del, Reverse, &section,
95d2994a
AK		 2131 int128_get64(fr->addr.start),
2132 int128_get64(fr->addr.size));
093bc2cd
AK		 2133 QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
2134 tmp = addrrange_shift(cmr->addr,
08dafab4
AK		 2135 int128_sub(fr->addr.start,
2136 int128_make64(fr->offset_in_region)));
093bc2cd
AK		 2137 if (!addrrange_intersects(tmp, fr->addr)) {
2138 continue;
2139 }
2140 tmp = addrrange_intersection(tmp, fr->addr);
9a54635d 2141 MEMORY_LISTENER_CALL(as, coalesced_mmio_add, Forward, &section,
95d2994a
AK		 2142 int128_get64(tmp.start),
2143 int128_get64(tmp.size));
093bc2cd
AK		 2144 }
2145 }
2146 }
856d7245 2147 flatview_unref(view);
093bc2cd
AK		 2148}
2149
0d673e36
AK		 2150static void memory_region_update_coalesced_range(MemoryRegion *mr)
2151{
2152 AddressSpace *as;
2153
2154 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
2155 memory_region_update_coalesced_range_as(mr, as);
2156 }
2157}
2158
093bc2cd
AK		 2159void memory_region_set_coalescing(MemoryRegion *mr)
2160{
2161 memory_region_clear_coalescing(mr);
08dafab4 2162 memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
093bc2cd
AK		 2163}
2164
2165void memory_region_add_coalescing(MemoryRegion *mr,
a8170e5e 2166 hwaddr offset,
093bc2cd
AK		 2167 uint64_t size)
2168{
7267c094 2169 CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
093bc2cd 2170
08dafab4 2171 cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
093bc2cd
AK		 2172 QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
2173 memory_region_update_coalesced_range(mr);
d410515e 2174 memory_region_set_flush_coalesced(mr);
093bc2cd
AK		 2175}
2176
2177void memory_region_clear_coalescing(MemoryRegion *mr)
2178{
2179 CoalescedMemoryRange *cmr;
ab5b3db5 2180 bool updated = false;
093bc2cd 2181
d410515e
JK		 2182 qemu_flush_coalesced_mmio_buffer();
2183 mr->flush_coalesced_mmio = false;
2184
093bc2cd
AK		 2185 while (!QTAILQ_EMPTY(&mr->coalesced)) {
2186 cmr = QTAILQ_FIRST(&mr->coalesced);
2187 QTAILQ_REMOVE(&mr->coalesced, cmr, link);
7267c094 2188 g_free(cmr);
ab5b3db5
FZ		 2189 updated = true;
2190 }
2191
2192 if (updated) {
2193 memory_region_update_coalesced_range(mr);
093bc2cd 2194 }
093bc2cd
AK		 2195}
2196
d410515e
JK		 2197void memory_region_set_flush_coalesced(MemoryRegion *mr)
2198{
2199 mr->flush_coalesced_mmio = true;
2200}
2201
2202void memory_region_clear_flush_coalesced(MemoryRegion *mr)
2203{
2204 qemu_flush_coalesced_mmio_buffer();
2205 if (QTAILQ_EMPTY(&mr->coalesced)) {
2206 mr->flush_coalesced_mmio = false;
2207 }
2208}
2209
196ea131
JK		 2210void memory_region_clear_global_locking(MemoryRegion *mr)
2211{
2212 mr->global_locking = false;
2213}
2214
8c56c1a5
PF		 2215static bool userspace_eventfd_warning;
2216
3e9d69e7 2217void memory_region_add_eventfd(MemoryRegion *mr,
a8170e5e 2218 hwaddr addr,
3e9d69e7
AK		 2219 unsigned size,
2220 bool match_data,
2221 uint64_t data,
753d5e14 2222 EventNotifier *e)
3e9d69e7
AK		 2223{
2224 MemoryRegionIoeventfd mrfd = {
08dafab4
AK		 2225 .addr.start = int128_make64(addr),
2226 .addr.size = int128_make64(size),
3e9d69e7
AK		 2227 .match_data = match_data,
2228 .data = data,
753d5e14 2229 .e = e,
3e9d69e7
AK		 2230 };
2231 unsigned i;
2232
8c56c1a5
PF		 2233 if (kvm_enabled() && (!(kvm_eventfds_enabled() ||
2234 userspace_eventfd_warning))) {
2235 userspace_eventfd_warning = true;
2236 error_report("Using eventfd without MMIO binding in KVM. "
2237 "Suboptimal performance expected");
2238 }
2239
b8aecea2
JW		 2240 if (size) {
2241 adjust_endianness(mr, &mrfd.data, size);
2242 }
59023ef4 2243 memory_region_transaction_begin();
3e9d69e7 2244 for (i = 0; i < mr->ioeventfd_nb; ++i) {
73bb753d 2245 if (memory_region_ioeventfd_before(&mrfd, &mr->ioeventfds[i])) {
3e9d69e7
AK		 2246 break;
2247 }
2248 }
2249 ++mr->ioeventfd_nb;
7267c094 2250 mr->ioeventfds = g_realloc(mr->ioeventfds,
3e9d69e7
AK		 2251 sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
2252 memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
2253 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
2254 mr->ioeventfds[i] = mrfd;
4dc56152 2255 ioeventfd_update_pending |= mr->enabled;
59023ef4 2256 memory_region_transaction_commit();
3e9d69e7
AK		 2257}
2258
2259void memory_region_del_eventfd(MemoryRegion *mr,
a8170e5e 2260 hwaddr addr,
3e9d69e7
AK		 2261 unsigned size,
2262 bool match_data,
2263 uint64_t data,
753d5e14 2264 EventNotifier *e)
3e9d69e7
AK		 2265{
2266 MemoryRegionIoeventfd mrfd = {
08dafab4
AK		 2267 .addr.start = int128_make64(addr),
2268 .addr.size = int128_make64(size),
3e9d69e7
AK		 2269 .match_data = match_data,
2270 .data = data,
753d5e14 2271 .e = e,
3e9d69e7
AK		 2272 };
2273 unsigned i;
2274
b8aecea2
JW		 2275 if (size) {
2276 adjust_endianness(mr, &mrfd.data, size);
2277 }
59023ef4 2278 memory_region_transaction_begin();
3e9d69e7 2279 for (i = 0; i < mr->ioeventfd_nb; ++i) {
73bb753d 2280 if (memory_region_ioeventfd_equal(&mrfd, &mr->ioeventfds[i])) {
3e9d69e7
AK		 2281 break;
2282 }
2283 }
2284 assert(i != mr->ioeventfd_nb);
2285 memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
2286 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
2287 --mr->ioeventfd_nb;
7267c094 2288 mr->ioeventfds = g_realloc(mr->ioeventfds,
3e9d69e7 2289 sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
4dc56152 2290 ioeventfd_update_pending |= mr->enabled;
59023ef4 2291 memory_region_transaction_commit();
3e9d69e7
AK		 2292}
2293
feca4ac1 2294static void memory_region_update_container_subregions(MemoryRegion *subregion)
093bc2cd 2295{
feca4ac1 2296 MemoryRegion *mr = subregion->container;
093bc2cd
AK		 2297 MemoryRegion *other;
2298
59023ef4
JK		 2299 memory_region_transaction_begin();
2300
dfde4e6e 2301 memory_region_ref(subregion);
093bc2cd
AK		 2302 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
2303 if (subregion->priority >= other->priority) {
2304 QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
2305 goto done;
2306 }
2307 }
2308 QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
2309done:
22bde714 2310 memory_region_update_pending |= mr->enabled && subregion->enabled;
59023ef4 2311 memory_region_transaction_commit();
093bc2cd
AK		 2312}
2313
0598701a
PC		 2314static void memory_region_add_subregion_common(MemoryRegion *mr,
2315 hwaddr offset,
2316 MemoryRegion *subregion)
2317{
feca4ac1
PB		 2318 assert(!subregion->container);
2319 subregion->container = mr;
0598701a 2320 subregion->addr = offset;
feca4ac1 2321 memory_region_update_container_subregions(subregion);
0598701a 2322}
093bc2cd
AK		 2323
2324void memory_region_add_subregion(MemoryRegion *mr,
a8170e5e 2325 hwaddr offset,
093bc2cd
AK		 2326 MemoryRegion *subregion)
2327{
093bc2cd
AK		 2328 subregion->priority = 0;
2329 memory_region_add_subregion_common(mr, offset, subregion);
2330}
2331
2332void memory_region_add_subregion_overlap(MemoryRegion *mr,
a8170e5e 2333 hwaddr offset,
093bc2cd 2334 MemoryRegion *subregion,
a1ff8ae0 2335 int priority)
093bc2cd 2336{
093bc2cd
AK		 2337 subregion->priority = priority;
2338 memory_region_add_subregion_common(mr, offset, subregion);
2339}
2340
2341void memory_region_del_subregion(MemoryRegion *mr,
2342 MemoryRegion *subregion)
2343{
59023ef4 2344 memory_region_transaction_begin();
feca4ac1
PB		 2345 assert(subregion->container == mr);
2346 subregion->container = NULL;
093bc2cd 2347 QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
dfde4e6e 2348 memory_region_unref(subregion);
22bde714 2349 memory_region_update_pending |= mr->enabled && subregion->enabled;
59023ef4 2350 memory_region_transaction_commit();
6bba19ba
AK		 2351}
2352
2353void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
2354{
2355 if (enabled == mr->enabled) {
2356 return;
2357 }
59023ef4 2358 memory_region_transaction_begin();
6bba19ba 2359 mr->enabled = enabled;
22bde714 2360 memory_region_update_pending = true;
59023ef4 2361 memory_region_transaction_commit();
093bc2cd 2362}
1c0ffa58 2363
e7af4c67
MT		 2364void memory_region_set_size(MemoryRegion *mr, uint64_t size)
2365{
2366 Int128 s = int128_make64(size);
2367
2368 if (size == UINT64_MAX) {
2369 s = int128_2_64();
2370 }
2371 if (int128_eq(s, mr->size)) {
2372 return;
2373 }
2374 memory_region_transaction_begin();
2375 mr->size = s;
2376 memory_region_update_pending = true;
2377 memory_region_transaction_commit();
2378}
2379
67891b8a 2380static void memory_region_readd_subregion(MemoryRegion *mr)
2282e1af 2381{
feca4ac1 2382 MemoryRegion *container = mr->container;
2282e1af 2383
feca4ac1 2384 if (container) {
67891b8a
PC		 2385 memory_region_transaction_begin();
2386 memory_region_ref(mr);
feca4ac1
PB		 2387 memory_region_del_subregion(container, mr);
2388 mr->container = container;
2389 memory_region_update_container_subregions(mr);
67891b8a
PC		 2390 memory_region_unref(mr);
2391 memory_region_transaction_commit();
2282e1af 2392 }
67891b8a 2393}
2282e1af 2394
67891b8a
PC		 2395void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
2396{
2397 if (addr != mr->addr) {
2398 mr->addr = addr;
2399 memory_region_readd_subregion(mr);
2400 }
2282e1af
AK		 2401}
2402
a8170e5e 2403void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
4703359e 2404{
4703359e 2405 assert(mr->alias);
4703359e 2406
59023ef4 2407 if (offset == mr->alias_offset) {
4703359e
AK		 2408 return;
2409 }
2410
59023ef4
JK		 2411 memory_region_transaction_begin();
2412 mr->alias_offset = offset;
22bde714 2413 memory_region_update_pending |= mr->enabled;
59023ef4 2414 memory_region_transaction_commit();
4703359e
AK		 2415}
2416
a2b257d6
IM		 2417uint64_t memory_region_get_alignment(const MemoryRegion *mr)
2418{
2419 return mr->align;
2420}
2421
e2177955
AK		 2422static int cmp_flatrange_addr(const void *addr_, const void *fr_)
2423{
2424 const AddrRange *addr = addr_;
2425 const FlatRange *fr = fr_;
2426
2427 if (int128_le(addrrange_end(*addr), fr->addr.start)) {
2428 return -1;
2429 } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
2430 return 1;
2431 }
2432 return 0;
2433}
2434
99e86347 2435static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
e2177955 2436{
99e86347 2437 return bsearch(&addr, view->ranges, view->nr,
e2177955
AK		 2438 sizeof(FlatRange), cmp_flatrange_addr);
2439}
2440
eed2bacf
IM		 2441bool memory_region_is_mapped(MemoryRegion *mr)
2442{
2443 return mr->container ? true : false;
2444}
2445
c6742b14
PB		 2446/* Same as memory_region_find, but it does not add a reference to the
2447 * returned region. It must be called from an RCU critical section.
2448 */
2449static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr,
2450 hwaddr addr, uint64_t size)
e2177955 2451{
052e87b0 2452 MemoryRegionSection ret = { .mr = NULL };
73034e9e
PB		 2453 MemoryRegion *root;
2454 AddressSpace *as;
2455 AddrRange range;
99e86347 2456 FlatView *view;
73034e9e
PB		 2457 FlatRange *fr;
2458
2459 addr += mr->addr;
feca4ac1
PB		 2460 for (root = mr; root->container; ) {
2461 root = root->container;
73034e9e
PB		 2462 addr += root->addr;
2463 }
e2177955 2464
73034e9e 2465 as = memory_region_to_address_space(root);
eed2bacf
IM		 2466 if (!as) {
2467 return ret;
2468 }
73034e9e 2469 range = addrrange_make(int128_make64(addr), int128_make64(size));
99e86347 2470
16620684 2471 view = address_space_to_flatview(as);
99e86347 2472 fr = flatview_lookup(view, range);
e2177955 2473 if (!fr) {
c6742b14 2474 return ret;
e2177955
AK		 2475 }
2476
99e86347 2477 while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
e2177955
AK		 2478 --fr;
2479 }
2480
2481 ret.mr = fr->mr;
16620684 2482 ret.fv = view;
e2177955
AK		 2483 range = addrrange_intersection(range, fr->addr);
2484 ret.offset_within_region = fr->offset_in_region;
2485 ret.offset_within_region += int128_get64(int128_sub(range.start,
2486 fr->addr.start));
052e87b0 2487 ret.size = range.size;
e2177955 2488 ret.offset_within_address_space = int128_get64(range.start);
7a8499e8 2489 ret.readonly = fr->readonly;
c6742b14
PB		 2490 return ret;
2491}
2492
2493MemoryRegionSection memory_region_find(MemoryRegion *mr,
2494 hwaddr addr, uint64_t size)
2495{
2496 MemoryRegionSection ret;
2497 rcu_read_lock();
2498 ret = memory_region_find_rcu(mr, addr, size);
2499 if (ret.mr) {
2500 memory_region_ref(ret.mr);
2501 }
2b647668 2502 rcu_read_unlock();
e2177955
AK		 2503 return ret;
2504}
2505
c6742b14
PB		 2506bool memory_region_present(MemoryRegion *container, hwaddr addr)
2507{
2508 MemoryRegion *mr;
2509
2510 rcu_read_lock();
2511 mr = memory_region_find_rcu(container, addr, 1).mr;
2512 rcu_read_unlock();
2513 return mr && mr != container;
2514}
2515
9c1f8f44 2516void memory_global_dirty_log_sync(void)
86e775c6 2517{
3ebb1817 2518 memory_region_sync_dirty_bitmap(NULL);
7664e80c
AK		 2519}
2520
19310760
JZ		 2521static VMChangeStateEntry *vmstate_change;
2522
7664e80c
AK		 2523void memory_global_dirty_log_start(void)
2524{
19310760
JZ		 2525 if (vmstate_change) {
2526 qemu_del_vm_change_state_handler(vmstate_change);
2527 vmstate_change = NULL;
2528 }
2529
7664e80c 2530 global_dirty_log = true;
6f6a5ef3 2531
7376e582 2532 MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
6f6a5ef3
PB		 2533
2534 /* Refresh DIRTY_LOG_MIGRATION bit. */
2535 memory_region_transaction_begin();
2536 memory_region_update_pending = true;
2537 memory_region_transaction_commit();
7664e80c
AK		 2538}
2539
19310760 2540static void memory_global_dirty_log_do_stop(void)
7664e80c 2541{
7664e80c 2542 global_dirty_log = false;
6f6a5ef3
PB		 2543
2544 /* Refresh DIRTY_LOG_MIGRATION bit. */
2545 memory_region_transaction_begin();
2546 memory_region_update_pending = true;
2547 memory_region_transaction_commit();
2548
7376e582 2549 MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
7664e80c
AK		 2550}
2551
19310760
JZ		 2552static void memory_vm_change_state_handler(void *opaque, int running,
2553 RunState state)
2554{
2555 if (running) {
2556 memory_global_dirty_log_do_stop();
2557
2558 if (vmstate_change) {
2559 qemu_del_vm_change_state_handler(vmstate_change);
2560 vmstate_change = NULL;
2561 }
2562 }
2563}
2564
2565void memory_global_dirty_log_stop(void)
2566{
2567 if (!runstate_is_running()) {
2568 if (vmstate_change) {
2569 return;
2570 }
2571 vmstate_change = qemu_add_vm_change_state_handler(
2572 memory_vm_change_state_handler, NULL);
2573 return;
2574 }
2575
2576 memory_global_dirty_log_do_stop();
2577}
2578
7664e80c
AK		 2579static void listener_add_address_space(MemoryListener *listener,
2580 AddressSpace *as)
2581{
99e86347 2582 FlatView *view;
7664e80c
AK		 2583 FlatRange *fr;
2584
680a4783
PB		 2585 if (listener->begin) {
2586 listener->begin(listener);
2587 }
7664e80c 2588 if (global_dirty_log) {
975aefe0
AK		 2589 if (listener->log_global_start) {
2590 listener->log_global_start(listener);
2591 }
7664e80c 2592 }
975aefe0 2593
856d7245 2594 view = address_space_get_flatview(as);
99e86347 2595 FOR_EACH_FLAT_RANGE(fr, view) {
279836f8
DH		 2596 MemoryRegionSection section = section_from_flat_range(fr, view);
2597
975aefe0
AK		 2598 if (listener->region_add) {
2599 listener->region_add(listener, &section);
2600 }
ae990e6c
DH		 2601 if (fr->dirty_log_mask && listener->log_start) {
2602 listener->log_start(listener, &section, 0, fr->dirty_log_mask);
2603 }
7664e80c 2604 }
680a4783
PB		 2605 if (listener->commit) {
2606 listener->commit(listener);
2607 }
856d7245 2608 flatview_unref(view);
7664e80c
AK		 2609}
2610
d25836ca
PX		 2611static void listener_del_address_space(MemoryListener *listener,
2612 AddressSpace *as)
2613{
2614 FlatView *view;
2615 FlatRange *fr;
2616
2617 if (listener->begin) {
2618 listener->begin(listener);
2619 }
2620 view = address_space_get_flatview(as);
2621 FOR_EACH_FLAT_RANGE(fr, view) {
2622 MemoryRegionSection section = section_from_flat_range(fr, view);
2623
2624 if (fr->dirty_log_mask && listener->log_stop) {
2625 listener->log_stop(listener, &section, fr->dirty_log_mask, 0);
2626 }
2627 if (listener->region_del) {
2628 listener->region_del(listener, &section);
2629 }
2630 }
2631 if (listener->commit) {
2632 listener->commit(listener);
2633 }
2634 flatview_unref(view);
2635}
2636
d45fa784 2637void memory_listener_register(MemoryListener *listener, AddressSpace *as)
7664e80c 2638{
72e22d2f
AK		 2639 MemoryListener *other = NULL;
2640
d45fa784 2641 listener->address_space = as;
72e22d2f
AK		 2642 if (QTAILQ_EMPTY(&memory_listeners)
2643 || listener->priority >= QTAILQ_LAST(&memory_listeners,
2644 memory_listeners)->priority) {
2645 QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
2646 } else {
2647 QTAILQ_FOREACH(other, &memory_listeners, link) {
2648 if (listener->priority < other->priority) {
2649 break;
2650 }
2651 }
2652 QTAILQ_INSERT_BEFORE(other, listener, link);
2653 }
0d673e36 2654
9a54635d
PB		 2655 if (QTAILQ_EMPTY(&as->listeners)
2656 || listener->priority >= QTAILQ_LAST(&as->listeners,
2657 memory_listeners)->priority) {
2658 QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as);
2659 } else {
2660 QTAILQ_FOREACH(other, &as->listeners, link_as) {
2661 if (listener->priority < other->priority) {
2662 break;
2663 }
2664 }
2665 QTAILQ_INSERT_BEFORE(other, listener, link_as);
2666 }
2667
d45fa784 2668 listener_add_address_space(listener, as);
7664e80c
AK		 2669}
2670
2671void memory_listener_unregister(MemoryListener *listener)
2672{
1d8280c1
PB		 2673 if (!listener->address_space) {
2674 return;
2675 }
2676
d25836ca 2677 listener_del_address_space(listener, listener->address_space);
72e22d2f 2678 QTAILQ_REMOVE(&memory_listeners, listener, link);
9a54635d 2679 QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as);
1d8280c1 2680 listener->address_space = NULL;
86e775c6 2681}
e2177955 2682
c9356746
FK		 2683bool memory_region_request_mmio_ptr(MemoryRegion *mr, hwaddr addr)
2684{
2685 void *host;
2686 unsigned size = 0;
2687 unsigned offset = 0;
2688 Object *new_interface;
2689
2690 if (!mr || !mr->ops->request_ptr) {
2691 return false;
2692 }
2693
2694 /*
2695 * Avoid an update if the request_ptr call
2696 * memory_region_invalidate_mmio_ptr which seems to be likely when we use
2697 * a cache.
2698 */
2699 memory_region_transaction_begin();
2700
2701 host = mr->ops->request_ptr(mr->opaque, addr - mr->addr, &size, &offset);
2702
2703 if (!host || !size) {
2704 memory_region_transaction_commit();
2705 return false;
2706 }
2707
2708 new_interface = object_new("mmio_interface");
2709 qdev_prop_set_uint64(DEVICE(new_interface), "start", offset);
2710 qdev_prop_set_uint64(DEVICE(new_interface), "end", offset + size - 1);
2711 qdev_prop_set_bit(DEVICE(new_interface), "ro", true);
2712 qdev_prop_set_ptr(DEVICE(new_interface), "host_ptr", host);
2713 qdev_prop_set_ptr(DEVICE(new_interface), "subregion", mr);
2714 object_property_set_bool(OBJECT(new_interface), true, "realized", NULL);
2715
2716 memory_region_transaction_commit();
2717 return true;
2718}
2719
2720typedef struct MMIOPtrInvalidate {
2721 MemoryRegion *mr;
2722 hwaddr offset;
2723 unsigned size;
2724 int busy;
2725 int allocated;
2726} MMIOPtrInvalidate;
2727
2728#define MAX_MMIO_INVALIDATE 10
2729static MMIOPtrInvalidate mmio_ptr_invalidate_list[MAX_MMIO_INVALIDATE];
2730
2731static void memory_region_do_invalidate_mmio_ptr(CPUState *cpu,
2732 run_on_cpu_data data)
2733{
2734 MMIOPtrInvalidate *invalidate_data = (MMIOPtrInvalidate *)data.host_ptr;
2735 MemoryRegion *mr = invalidate_data->mr;
2736 hwaddr offset = invalidate_data->offset;
2737 unsigned size = invalidate_data->size;
2738 MemoryRegionSection section = memory_region_find(mr, offset, size);
2739
2740 qemu_mutex_lock_iothread();
2741
2742 /* Reset dirty so this doesn't happen later. */
2743 cpu_physical_memory_test_and_clear_dirty(offset, size, 1);
2744
2745 if (section.mr != mr) {
2746 /* memory_region_find add a ref on section.mr */
2747 memory_region_unref(section.mr);
2748 if (MMIO_INTERFACE(section.mr->owner)) {
2749 /* We found the interface just drop it. */
2750 object_property_set_bool(section.mr->owner, false, "realized",
2751 NULL);
2752 object_unref(section.mr->owner);
2753 object_unparent(section.mr->owner);
2754 }
2755 }
2756
2757 qemu_mutex_unlock_iothread();
2758
2759 if (invalidate_data->allocated) {
2760 g_free(invalidate_data);
2761 } else {
2762 invalidate_data->busy = 0;
2763 }
2764}
2765
2766void memory_region_invalidate_mmio_ptr(MemoryRegion *mr, hwaddr offset,
2767 unsigned size)
2768{
2769 size_t i;
2770 MMIOPtrInvalidate *invalidate_data = NULL;
2771
2772 for (i = 0; i < MAX_MMIO_INVALIDATE; i++) {
2773 if (atomic_cmpxchg(&(mmio_ptr_invalidate_list[i].busy), 0, 1) == 0) {
2774 invalidate_data = &mmio_ptr_invalidate_list[i];
2775 break;
2776 }
2777 }
2778
2779 if (!invalidate_data) {
2780 invalidate_data = g_malloc0(sizeof(MMIOPtrInvalidate));
2781 invalidate_data->allocated = 1;
2782 }
2783
2784 invalidate_data->mr = mr;
2785 invalidate_data->offset = offset;
2786 invalidate_data->size = size;
2787
2788 async_safe_run_on_cpu(first_cpu, memory_region_do_invalidate_mmio_ptr,
2789 RUN_ON_CPU_HOST_PTR(invalidate_data));
2790}
2791
7dca8043 2792void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
1c0ffa58 2793{
ac95190e 2794 memory_region_ref(root);
8786db7c 2795 as->root = root;
67ace39b 2796 as->current_map = NULL;
4c19eb72
AK		 2797 as->ioeventfd_nb = 0;
2798 as->ioeventfds = NULL;
9a54635d 2799 QTAILQ_INIT(&as->listeners);
0d673e36 2800 QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
7dca8043 2801 as->name = g_strdup(name ? name : "anonymous");
202fc01b
AK		 2802 address_space_update_topology(as);
2803 address_space_update_ioeventfds(as);
1c0ffa58 2804}
658b2224 2805
374f2981 2806static void do_address_space_destroy(AddressSpace *as)
83f3c251 2807{
9a54635d 2808 assert(QTAILQ_EMPTY(&as->listeners));
078c44f4 2809
856d7245 2810 flatview_unref(as->current_map);
7dca8043 2811 g_free(as->name);
4c19eb72 2812 g_free(as->ioeventfds);
ac95190e 2813 memory_region_unref(as->root);
83f3c251
AK		 2814}
2815
374f2981
PB		 2816void address_space_destroy(AddressSpace *as)
2817{
ac95190e
PB		 2818 MemoryRegion *root = as->root;
2819
374f2981
PB		 2820 /* Flush out anything from MemoryListeners listening in on this */
2821 memory_region_transaction_begin();
2822 as->root = NULL;
2823 memory_region_transaction_commit();
2824 QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
2825
2826 /* At this point, as->dispatch and as->current_map are dummy
2827 * entries that the guest should never use. Wait for the old
2828 * values to expire before freeing the data.
2829 */
ac95190e 2830 as->root = root;
374f2981
PB		 2831 call_rcu(as, do_address_space_destroy, rcu);
2832}
2833
4e831901
PX		 2834static const char *memory_region_type(MemoryRegion *mr)
2835{
2836 if (memory_region_is_ram_device(mr)) {
2837 return "ramd";
2838 } else if (memory_region_is_romd(mr)) {
2839 return "romd";
2840 } else if (memory_region_is_rom(mr)) {
2841 return "rom";
2842 } else if (memory_region_is_ram(mr)) {
2843 return "ram";
2844 } else {
2845 return "i/o";
2846 }
2847}
2848
314e2987
BS		 2849typedef struct MemoryRegionList MemoryRegionList;
2850
2851struct MemoryRegionList {
2852 const MemoryRegion *mr;
a16878d2 2853 QTAILQ_ENTRY(MemoryRegionList) mrqueue;
314e2987
BS		 2854};
2855
a16878d2 2856typedef QTAILQ_HEAD(mrqueue, MemoryRegionList) MemoryRegionListHead;
314e2987 2857
4e831901
PX		 2858#define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \
2859 int128_sub((size), int128_one())) : 0)
2860#define MTREE_INDENT " "
2861
fc051ae6
AK		 2862static void mtree_expand_owner(fprintf_function mon_printf, void *f,
2863 const char *label, Object *obj)
2864{
2865 DeviceState *dev = (DeviceState *) object_dynamic_cast(obj, TYPE_DEVICE);
2866
2867 mon_printf(f, " %s:{%s", label, dev ? "dev" : "obj");
2868 if (dev && dev->id) {
2869 mon_printf(f, " id=%s", dev->id);
2870 } else {
2871 gchar *canonical_path = object_get_canonical_path(obj);
2872 if (canonical_path) {
2873 mon_printf(f, " path=%s", canonical_path);
2874 g_free(canonical_path);
2875 } else {
2876 mon_printf(f, " type=%s", object_get_typename(obj));
2877 }
2878 }
2879 mon_printf(f, "}");
2880}
2881
2882static void mtree_print_mr_owner(fprintf_function mon_printf, void *f,
2883 const MemoryRegion *mr)
2884{
2885 Object *owner = mr->owner;
2886 Object *parent = memory_region_owner((MemoryRegion *)mr);
2887
2888 if (!owner && !parent) {
2889 mon_printf(f, " orphan");
2890 return;
2891 }
2892 if (owner) {
2893 mtree_expand_owner(mon_printf, f, "owner", owner);
2894 }
2895 if (parent && parent != owner) {
2896 mtree_expand_owner(mon_printf, f, "parent", parent);
2897 }
2898}
2899
314e2987
BS		 2900static void mtree_print_mr(fprintf_function mon_printf, void *f,
2901 const MemoryRegion *mr, unsigned int level,
a8170e5e 2902 hwaddr base,
fc051ae6
AK		 2903 MemoryRegionListHead *alias_print_queue,
2904 bool owner)
314e2987 2905{
9479c57a
JK		 2906 MemoryRegionList *new_ml, *ml, *next_ml;
2907 MemoryRegionListHead submr_print_queue;
314e2987
BS		 2908 const MemoryRegion *submr;
2909 unsigned int i;
b31f8412 2910 hwaddr cur_start, cur_end;
314e2987 2911
f8a9f720 2912 if (!mr) {
314e2987
BS		 2913 return;
2914 }
2915
2916 for (i = 0; i < level; i++) {
4e831901 2917 mon_printf(f, MTREE_INDENT);
314e2987
BS		 2918 }
2919
b31f8412
PX		 2920 cur_start = base + mr->addr;
2921 cur_end = cur_start + MR_SIZE(mr->size);
2922
2923 /*
2924 * Try to detect overflow of memory region. This should never
2925 * happen normally. When it happens, we dump something to warn the
2926 * user who is observing this.
2927 */
2928 if (cur_start < base || cur_end < cur_start) {
2929 mon_printf(f, "[DETECTED OVERFLOW!] ");
2930 }
2931
314e2987
BS		 2932 if (mr->alias) {
2933 MemoryRegionList *ml;
2934 bool found = false;
2935
2936 /* check if the alias is already in the queue */
a16878d2 2937 QTAILQ_FOREACH(ml, alias_print_queue, mrqueue) {
f54bb15f 2938 if (ml->mr == mr->alias) {
314e2987
BS		 2939 found = true;
2940 }
2941 }
2942
2943 if (!found) {
2944 ml = g_new(MemoryRegionList, 1);
2945 ml->mr = mr->alias;
a16878d2 2946 QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue);
314e2987 2947 }
4896d74b 2948 mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
4e831901 2949 " (prio %d, %s): alias %s @%s " TARGET_FMT_plx
fc051ae6 2950 "-" TARGET_FMT_plx "%s",
b31f8412 2951 cur_start, cur_end,
4b474ba7 2952 mr->priority,
4e831901 2953 memory_region_type((MemoryRegion *)mr),
3fb18b4d
PC		 2954 memory_region_name(mr),
2955 memory_region_name(mr->alias),
314e2987 2956 mr->alias_offset,
4e831901 2957 mr->alias_offset + MR_SIZE(mr->size),
f8a9f720 2958 mr->enabled ? "" : " [disabled]");
fc051ae6
AK		 2959 if (owner) {
2960 mtree_print_mr_owner(mon_printf, f, mr);
2961 }
314e2987 2962 } else {
4896d74b 2963 mon_printf(f,
fc051ae6 2964 TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %s): %s%s",
b31f8412 2965 cur_start, cur_end,
4b474ba7 2966 mr->priority,
4e831901 2967 memory_region_type((MemoryRegion *)mr),
f8a9f720
GH		 2968 memory_region_name(mr),
2969 mr->enabled ? "" : " [disabled]");
fc051ae6
AK		 2970 if (owner) {
2971 mtree_print_mr_owner(mon_printf, f, mr);
2972 }
314e2987 2973 }
fc051ae6 2974 mon_printf(f, "\n");
9479c57a
JK		 2975
2976 QTAILQ_INIT(&submr_print_queue);
2977
314e2987 2978 QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
9479c57a
JK		 2979 new_ml = g_new(MemoryRegionList, 1);
2980 new_ml->mr = submr;
a16878d2 2981 QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
9479c57a
JK		 2982 if (new_ml->mr->addr < ml->mr->addr ||
2983 (new_ml->mr->addr == ml->mr->addr &&
2984 new_ml->mr->priority > ml->mr->priority)) {
a16878d2 2985 QTAILQ_INSERT_BEFORE(ml, new_ml, mrqueue);
9479c57a
JK		 2986 new_ml = NULL;
2987 break;
2988 }
2989 }
2990 if (new_ml) {
a16878d2 2991 QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, mrqueue);
9479c57a
JK		 2992 }
2993 }
2994
a16878d2 2995 QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
b31f8412 2996 mtree_print_mr(mon_printf, f, ml->mr, level + 1, cur_start,
fc051ae6 2997 alias_print_queue, owner);
9479c57a
JK		 2998 }
2999
a16878d2 3000 QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, mrqueue, next_ml) {
9479c57a 3001 g_free(ml);
314e2987
BS		 3002 }
3003}
3004
5e8fd947
AK		 3005struct FlatViewInfo {
3006 fprintf_function mon_printf;
3007 void *f;
3008 int counter;
3009 bool dispatch_tree;
fc051ae6 3010 bool owner;
5e8fd947
AK		 3011};
3012
3013static void mtree_print_flatview(gpointer key, gpointer value,
3014 gpointer user_data)
57bb40c9 3015{
5e8fd947
AK		 3016 FlatView *view = key;
3017 GArray *fv_address_spaces = value;
3018 struct FlatViewInfo *fvi = user_data;
3019 fprintf_function p = fvi->mon_printf;
3020 void *f = fvi->f;
57bb40c9
PX		 3021 FlatRange *range = &view->ranges[0];
3022 MemoryRegion *mr;
3023 int n = view->nr;
5e8fd947
AK		 3024 int i;
3025 AddressSpace *as;
3026
3027 p(f, "FlatView #%d\n", fvi->counter);
3028 ++fvi->counter;
3029
3030 for (i = 0; i < fv_address_spaces->len; ++i) {
3031 as = g_array_index(fv_address_spaces, AddressSpace*, i);
3032 p(f, " AS \"%s\", root: %s", as->name, memory_region_name(as->root));
3033 if (as->root->alias) {
3034 p(f, ", alias %s", memory_region_name(as->root->alias));
3035 }
3036 p(f, "\n");
3037 }
3038
3039 p(f, " Root memory region: %s\n",
3040 view->root ? memory_region_name(view->root) : "(none)");
57bb40c9
PX		 3041
3042 if (n <= 0) {
5e8fd947 3043 p(f, MTREE_INDENT "No rendered FlatView\n\n");
57bb40c9
PX		 3044 return;
3045 }
3046
3047 while (n--) {
3048 mr = range->mr;
377a07aa
PB		 3049 if (range->offset_in_region) {
3050 p(f, MTREE_INDENT TARGET_FMT_plx "-"
fc051ae6 3051 TARGET_FMT_plx " (prio %d, %s): %s @" TARGET_FMT_plx,
377a07aa
PB		 3052 int128_get64(range->addr.start),
3053 int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
3054 mr->priority,
3055 range->readonly ? "rom" : memory_region_type(mr),
3056 memory_region_name(mr),
3057 range->offset_in_region);
3058 } else {
3059 p(f, MTREE_INDENT TARGET_FMT_plx "-"
fc051ae6 3060 TARGET_FMT_plx " (prio %d, %s): %s",
377a07aa
PB		 3061 int128_get64(range->addr.start),
3062 int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
3063 mr->priority,
3064 range->readonly ? "rom" : memory_region_type(mr),
3065 memory_region_name(mr));
3066 }
fc051ae6
AK		 3067 if (fvi->owner) {
3068 mtree_print_mr_owner(p, f, mr);
3069 }
3070 p(f, "\n");
57bb40c9
PX		 3071 range++;
3072 }
3073
5e8fd947
AK		 3074#if !defined(CONFIG_USER_ONLY)
3075 if (fvi->dispatch_tree && view->root) {
3076 mtree_print_dispatch(p, f, view->dispatch, view->root);
3077 }
3078#endif
3079
3080 p(f, "\n");
3081}
3082
3083static gboolean mtree_info_flatview_free(gpointer key, gpointer value,
3084 gpointer user_data)
3085{
3086 FlatView *view = key;
3087 GArray *fv_address_spaces = value;
3088
3089 g_array_unref(fv_address_spaces);
57bb40c9 3090 flatview_unref(view);
5e8fd947
AK		 3091
3092 return true;
57bb40c9
PX		 3093}
3094
5e8fd947 3095void mtree_info(fprintf_function mon_printf, void *f, bool flatview,
fc051ae6 3096 bool dispatch_tree, bool owner)
314e2987
BS		 3097{
3098 MemoryRegionListHead ml_head;
3099 MemoryRegionList *ml, *ml2;
0d673e36 3100 AddressSpace *as;
314e2987 3101
57bb40c9 3102 if (flatview) {
5e8fd947
AK		 3103 FlatView *view;
3104 struct FlatViewInfo fvi = {
3105 .mon_printf = mon_printf,
3106 .f = f,
3107 .counter = 0,
fc051ae6
AK		 3108 .dispatch_tree = dispatch_tree,
3109 .owner = owner,
5e8fd947
AK		 3110 };
3111 GArray *fv_address_spaces;
3112 GHashTable *views = g_hash_table_new(g_direct_hash, g_direct_equal);
3113
3114 /* Gather all FVs in one table */
57bb40c9 3115 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
5e8fd947
AK		 3116 view = address_space_get_flatview(as);
3117
3118 fv_address_spaces = g_hash_table_lookup(views, view);
3119 if (!fv_address_spaces) {
3120 fv_address_spaces = g_array_new(false, false, sizeof(as));
3121 g_hash_table_insert(views, view, fv_address_spaces);
3122 }
3123
3124 g_array_append_val(fv_address_spaces, as);
57bb40c9 3125 }
5e8fd947
AK		 3126
3127 /* Print */
3128 g_hash_table_foreach(views, mtree_print_flatview, &fvi);
3129
3130 /* Free */
3131 g_hash_table_foreach_remove(views, mtree_info_flatview_free, 0);
3132 g_hash_table_unref(views);
3133
57bb40c9
PX		 3134 return;
3135 }
3136
314e2987
BS		 3137 QTAILQ_INIT(&ml_head);
3138
0d673e36 3139 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
e48816aa 3140 mon_printf(f, "address-space: %s\n", as->name);
fc051ae6 3141 mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head, owner);
e48816aa 3142 mon_printf(f, "\n");
b9f9be88
BS		 3143 }
3144
314e2987 3145 /* print aliased regions */
a16878d2 3146 QTAILQ_FOREACH(ml, &ml_head, mrqueue) {
e48816aa 3147 mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr));
fc051ae6 3148 mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head, owner);
e48816aa 3149 mon_printf(f, "\n");
314e2987
BS		 3150 }
3151
a16878d2 3152 QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) {
88365e47 3153 g_free(ml);
314e2987 3154 }
314e2987 3155}
b4fefef9 3156
b08199c6
PM		 3157void memory_region_init_ram(MemoryRegion *mr,
3158 struct Object *owner,
3159 const char *name,
3160 uint64_t size,
3161 Error **errp)
3162{
3163 DeviceState *owner_dev;
3164 Error *err = NULL;
3165
3166 memory_region_init_ram_nomigrate(mr, owner, name, size, &err);
3167 if (err) {
3168 error_propagate(errp, err);
3169 return;
3170 }
3171 /* This will assert if owner is neither NULL nor a DeviceState.
3172 * We only want the owner here for the purposes of defining a
3173 * unique name for migration. TODO: Ideally we should implement
3174 * a naming scheme for Objects which are not DeviceStates, in
3175 * which case we can relax this restriction.
3176 */
3177 owner_dev = DEVICE(owner);
3178 vmstate_register_ram(mr, owner_dev);
3179}
3180
3181void memory_region_init_rom(MemoryRegion *mr,
3182 struct Object *owner,
3183 const char *name,
3184 uint64_t size,
3185 Error **errp)
3186{
3187 DeviceState *owner_dev;
3188 Error *err = NULL;
3189
3190 memory_region_init_rom_nomigrate(mr, owner, name, size, &err);
3191 if (err) {
3192 error_propagate(errp, err);
3193 return;
3194 }
3195 /* This will assert if owner is neither NULL nor a DeviceState.
3196 * We only want the owner here for the purposes of defining a
3197 * unique name for migration. TODO: Ideally we should implement
3198 * a naming scheme for Objects which are not DeviceStates, in
3199 * which case we can relax this restriction.
3200 */
3201 owner_dev = DEVICE(owner);
3202 vmstate_register_ram(mr, owner_dev);
3203}
3204
3205void memory_region_init_rom_device(MemoryRegion *mr,
3206 struct Object *owner,
3207 const MemoryRegionOps *ops,
3208 void *opaque,
3209 const char *name,
3210 uint64_t size,
3211 Error **errp)
3212{
3213 DeviceState *owner_dev;
3214 Error *err = NULL;
3215
3216 memory_region_init_rom_device_nomigrate(mr, owner, ops, opaque,
3217 name, size, &err);
3218 if (err) {
3219 error_propagate(errp, err);
3220 return;
3221 }
3222 /* This will assert if owner is neither NULL nor a DeviceState.
3223 * We only want the owner here for the purposes of defining a
3224 * unique name for migration. TODO: Ideally we should implement
3225 * a naming scheme for Objects which are not DeviceStates, in
3226 * which case we can relax this restriction.
3227 */
3228 owner_dev = DEVICE(owner);
3229 vmstate_register_ram(mr, owner_dev);
3230}
3231
b4fefef9
PC		 3232static const TypeInfo memory_region_info = {
3233 .parent = TYPE_OBJECT,
3234 .name = TYPE_MEMORY_REGION,
3235 .instance_size = sizeof(MemoryRegion),
3236 .instance_init = memory_region_initfn,
3237 .instance_finalize = memory_region_finalize,
3238};
3239
3df9d748
AK		 3240static const TypeInfo iommu_memory_region_info = {
3241 .parent = TYPE_MEMORY_REGION,
3242 .name = TYPE_IOMMU_MEMORY_REGION,
1221a474 3243 .class_size = sizeof(IOMMUMemoryRegionClass),
3df9d748
AK		 3244 .instance_size = sizeof(IOMMUMemoryRegion),
3245 .instance_init = iommu_memory_region_initfn,
1221a474 3246 .abstract = true,
3df9d748
AK		 3247};
3248
b4fefef9
PC		 3249static void memory_register_types(void)
3250{
3251 type_register_static(&memory_region_info);
3df9d748 3252 type_register_static(&iommu_memory_region_info);
b4fefef9
PC		 3253}
3254
3255type_init(memory_register_types)
QEMU mirror