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Commit | Line | Data |
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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 | ||
022c62cb PB |
16 | #include "exec/memory.h" |
17 | #include "exec/address-spaces.h" | |
18 | #include "exec/ioport.h" | |
1de7afc9 | 19 | #include "qemu/bitops.h" |
2c9b15ca | 20 | #include "qom/object.h" |
9c17d615 | 21 | #include "sysemu/kvm.h" |
093bc2cd AK |
22 | #include <assert.h> |
23 | ||
022c62cb | 24 | #include "exec/memory-internal.h" |
67d95c15 | 25 | |
d197063f PB |
26 | //#define DEBUG_UNASSIGNED |
27 | ||
22bde714 JK |
28 | static unsigned memory_region_transaction_depth; |
29 | static bool memory_region_update_pending; | |
7664e80c AK |
30 | static bool global_dirty_log = false; |
31 | ||
856d7245 PB |
32 | /* flat_view_mutex is taken around reading as->current_map; the critical |
33 | * section is extremely short, so I'm using a single mutex for every AS. | |
34 | * We could also RCU for the read-side. | |
35 | * | |
36 | * The BQL is taken around transaction commits, hence both locks are taken | |
37 | * while writing to as->current_map (with the BQL taken outside). | |
38 | */ | |
39 | static QemuMutex flat_view_mutex; | |
40 | ||
72e22d2f AK |
41 | static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners |
42 | = QTAILQ_HEAD_INITIALIZER(memory_listeners); | |
4ef4db86 | 43 | |
0d673e36 AK |
44 | static QTAILQ_HEAD(, AddressSpace) address_spaces |
45 | = QTAILQ_HEAD_INITIALIZER(address_spaces); | |
46 | ||
856d7245 PB |
47 | static void memory_init(void) |
48 | { | |
49 | qemu_mutex_init(&flat_view_mutex); | |
50 | } | |
51 | ||
093bc2cd AK |
52 | typedef struct AddrRange AddrRange; |
53 | ||
8417cebf AK |
54 | /* |
55 | * Note using signed integers limits us to physical addresses at most | |
56 | * 63 bits wide. They are needed for negative offsetting in aliases | |
57 | * (large MemoryRegion::alias_offset). | |
58 | */ | |
093bc2cd | 59 | struct AddrRange { |
08dafab4 AK |
60 | Int128 start; |
61 | Int128 size; | |
093bc2cd AK |
62 | }; |
63 | ||
08dafab4 | 64 | static AddrRange addrrange_make(Int128 start, Int128 size) |
093bc2cd AK |
65 | { |
66 | return (AddrRange) { start, size }; | |
67 | } | |
68 | ||
69 | static bool addrrange_equal(AddrRange r1, AddrRange r2) | |
70 | { | |
08dafab4 | 71 | return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size); |
093bc2cd AK |
72 | } |
73 | ||
08dafab4 | 74 | static Int128 addrrange_end(AddrRange r) |
093bc2cd | 75 | { |
08dafab4 | 76 | return int128_add(r.start, r.size); |
093bc2cd AK |
77 | } |
78 | ||
08dafab4 | 79 | static AddrRange addrrange_shift(AddrRange range, Int128 delta) |
093bc2cd | 80 | { |
08dafab4 | 81 | int128_addto(&range.start, delta); |
093bc2cd AK |
82 | return range; |
83 | } | |
84 | ||
08dafab4 AK |
85 | static bool addrrange_contains(AddrRange range, Int128 addr) |
86 | { | |
87 | return int128_ge(addr, range.start) | |
88 | && int128_lt(addr, addrrange_end(range)); | |
89 | } | |
90 | ||
093bc2cd AK |
91 | static bool addrrange_intersects(AddrRange r1, AddrRange r2) |
92 | { | |
08dafab4 AK |
93 | return addrrange_contains(r1, r2.start) |
94 | || addrrange_contains(r2, r1.start); | |
093bc2cd AK |
95 | } |
96 | ||
97 | static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2) | |
98 | { | |
08dafab4 AK |
99 | Int128 start = int128_max(r1.start, r2.start); |
100 | Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2)); | |
101 | return addrrange_make(start, int128_sub(end, start)); | |
093bc2cd AK |
102 | } |
103 | ||
0e0d36b4 AK |
104 | enum ListenerDirection { Forward, Reverse }; |
105 | ||
7376e582 AK |
106 | static bool memory_listener_match(MemoryListener *listener, |
107 | MemoryRegionSection *section) | |
108 | { | |
109 | return !listener->address_space_filter | |
110 | || listener->address_space_filter == section->address_space; | |
111 | } | |
112 | ||
113 | #define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \ | |
0e0d36b4 AK |
114 | do { \ |
115 | MemoryListener *_listener; \ | |
116 | \ | |
117 | switch (_direction) { \ | |
118 | case Forward: \ | |
119 | QTAILQ_FOREACH(_listener, &memory_listeners, link) { \ | |
975aefe0 AK |
120 | if (_listener->_callback) { \ |
121 | _listener->_callback(_listener, ##_args); \ | |
122 | } \ | |
0e0d36b4 AK |
123 | } \ |
124 | break; \ | |
125 | case Reverse: \ | |
126 | QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \ | |
127 | memory_listeners, link) { \ | |
975aefe0 AK |
128 | if (_listener->_callback) { \ |
129 | _listener->_callback(_listener, ##_args); \ | |
130 | } \ | |
0e0d36b4 AK |
131 | } \ |
132 | break; \ | |
133 | default: \ | |
134 | abort(); \ | |
135 | } \ | |
136 | } while (0) | |
137 | ||
7376e582 AK |
138 | #define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \ |
139 | do { \ | |
140 | MemoryListener *_listener; \ | |
141 | \ | |
142 | switch (_direction) { \ | |
143 | case Forward: \ | |
144 | QTAILQ_FOREACH(_listener, &memory_listeners, link) { \ | |
975aefe0 AK |
145 | if (_listener->_callback \ |
146 | && memory_listener_match(_listener, _section)) { \ | |
7376e582 AK |
147 | _listener->_callback(_listener, _section, ##_args); \ |
148 | } \ | |
149 | } \ | |
150 | break; \ | |
151 | case Reverse: \ | |
152 | QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \ | |
153 | memory_listeners, link) { \ | |
975aefe0 AK |
154 | if (_listener->_callback \ |
155 | && memory_listener_match(_listener, _section)) { \ | |
7376e582 AK |
156 | _listener->_callback(_listener, _section, ##_args); \ |
157 | } \ | |
158 | } \ | |
159 | break; \ | |
160 | default: \ | |
161 | abort(); \ | |
162 | } \ | |
163 | } while (0) | |
164 | ||
dfde4e6e | 165 | /* No need to ref/unref .mr, the FlatRange keeps it alive. */ |
0e0d36b4 | 166 | #define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \ |
7376e582 | 167 | MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \ |
0e0d36b4 | 168 | .mr = (fr)->mr, \ |
f6790af6 | 169 | .address_space = (as), \ |
0e0d36b4 | 170 | .offset_within_region = (fr)->offset_in_region, \ |
052e87b0 | 171 | .size = (fr)->addr.size, \ |
0e0d36b4 | 172 | .offset_within_address_space = int128_get64((fr)->addr.start), \ |
7a8499e8 | 173 | .readonly = (fr)->readonly, \ |
7376e582 | 174 | })) |
0e0d36b4 | 175 | |
093bc2cd AK |
176 | struct CoalescedMemoryRange { |
177 | AddrRange addr; | |
178 | QTAILQ_ENTRY(CoalescedMemoryRange) link; | |
179 | }; | |
180 | ||
3e9d69e7 AK |
181 | struct MemoryRegionIoeventfd { |
182 | AddrRange addr; | |
183 | bool match_data; | |
184 | uint64_t data; | |
753d5e14 | 185 | EventNotifier *e; |
3e9d69e7 AK |
186 | }; |
187 | ||
188 | static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a, | |
189 | MemoryRegionIoeventfd b) | |
190 | { | |
08dafab4 | 191 | if (int128_lt(a.addr.start, b.addr.start)) { |
3e9d69e7 | 192 | return true; |
08dafab4 | 193 | } else if (int128_gt(a.addr.start, b.addr.start)) { |
3e9d69e7 | 194 | return false; |
08dafab4 | 195 | } else if (int128_lt(a.addr.size, b.addr.size)) { |
3e9d69e7 | 196 | return true; |
08dafab4 | 197 | } else if (int128_gt(a.addr.size, b.addr.size)) { |
3e9d69e7 AK |
198 | return false; |
199 | } else if (a.match_data < b.match_data) { | |
200 | return true; | |
201 | } else if (a.match_data > b.match_data) { | |
202 | return false; | |
203 | } else if (a.match_data) { | |
204 | if (a.data < b.data) { | |
205 | return true; | |
206 | } else if (a.data > b.data) { | |
207 | return false; | |
208 | } | |
209 | } | |
753d5e14 | 210 | if (a.e < b.e) { |
3e9d69e7 | 211 | return true; |
753d5e14 | 212 | } else if (a.e > b.e) { |
3e9d69e7 AK |
213 | return false; |
214 | } | |
215 | return false; | |
216 | } | |
217 | ||
218 | static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a, | |
219 | MemoryRegionIoeventfd b) | |
220 | { | |
221 | return !memory_region_ioeventfd_before(a, b) | |
222 | && !memory_region_ioeventfd_before(b, a); | |
223 | } | |
224 | ||
093bc2cd AK |
225 | typedef struct FlatRange FlatRange; |
226 | typedef struct FlatView FlatView; | |
227 | ||
228 | /* Range of memory in the global map. Addresses are absolute. */ | |
229 | struct FlatRange { | |
230 | MemoryRegion *mr; | |
a8170e5e | 231 | hwaddr offset_in_region; |
093bc2cd | 232 | AddrRange addr; |
5a583347 | 233 | uint8_t dirty_log_mask; |
5f9a5ea1 | 234 | bool romd_mode; |
fb1cd6f9 | 235 | bool readonly; |
093bc2cd AK |
236 | }; |
237 | ||
238 | /* Flattened global view of current active memory hierarchy. Kept in sorted | |
239 | * order. | |
240 | */ | |
241 | struct FlatView { | |
856d7245 | 242 | unsigned ref; |
093bc2cd AK |
243 | FlatRange *ranges; |
244 | unsigned nr; | |
245 | unsigned nr_allocated; | |
246 | }; | |
247 | ||
cc31e6e7 AK |
248 | typedef struct AddressSpaceOps AddressSpaceOps; |
249 | ||
093bc2cd AK |
250 | #define FOR_EACH_FLAT_RANGE(var, view) \ |
251 | for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var) | |
252 | ||
093bc2cd AK |
253 | static bool flatrange_equal(FlatRange *a, FlatRange *b) |
254 | { | |
255 | return a->mr == b->mr | |
256 | && addrrange_equal(a->addr, b->addr) | |
d0a9b5bc | 257 | && a->offset_in_region == b->offset_in_region |
5f9a5ea1 | 258 | && a->romd_mode == b->romd_mode |
fb1cd6f9 | 259 | && a->readonly == b->readonly; |
093bc2cd AK |
260 | } |
261 | ||
262 | static void flatview_init(FlatView *view) | |
263 | { | |
856d7245 | 264 | view->ref = 1; |
093bc2cd AK |
265 | view->ranges = NULL; |
266 | view->nr = 0; | |
267 | view->nr_allocated = 0; | |
268 | } | |
269 | ||
270 | /* Insert a range into a given position. Caller is responsible for maintaining | |
271 | * sorting order. | |
272 | */ | |
273 | static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range) | |
274 | { | |
275 | if (view->nr == view->nr_allocated) { | |
276 | view->nr_allocated = MAX(2 * view->nr, 10); | |
7267c094 | 277 | view->ranges = g_realloc(view->ranges, |
093bc2cd AK |
278 | view->nr_allocated * sizeof(*view->ranges)); |
279 | } | |
280 | memmove(view->ranges + pos + 1, view->ranges + pos, | |
281 | (view->nr - pos) * sizeof(FlatRange)); | |
282 | view->ranges[pos] = *range; | |
dfde4e6e | 283 | memory_region_ref(range->mr); |
093bc2cd AK |
284 | ++view->nr; |
285 | } | |
286 | ||
287 | static void flatview_destroy(FlatView *view) | |
288 | { | |
dfde4e6e PB |
289 | int i; |
290 | ||
291 | for (i = 0; i < view->nr; i++) { | |
292 | memory_region_unref(view->ranges[i].mr); | |
293 | } | |
7267c094 | 294 | g_free(view->ranges); |
a9a0c06d | 295 | g_free(view); |
093bc2cd AK |
296 | } |
297 | ||
856d7245 PB |
298 | static void flatview_ref(FlatView *view) |
299 | { | |
300 | atomic_inc(&view->ref); | |
301 | } | |
302 | ||
303 | static void flatview_unref(FlatView *view) | |
304 | { | |
305 | if (atomic_fetch_dec(&view->ref) == 1) { | |
306 | flatview_destroy(view); | |
307 | } | |
308 | } | |
309 | ||
3d8e6bf9 AK |
310 | static bool can_merge(FlatRange *r1, FlatRange *r2) |
311 | { | |
08dafab4 | 312 | return int128_eq(addrrange_end(r1->addr), r2->addr.start) |
3d8e6bf9 | 313 | && r1->mr == r2->mr |
08dafab4 AK |
314 | && int128_eq(int128_add(int128_make64(r1->offset_in_region), |
315 | r1->addr.size), | |
316 | int128_make64(r2->offset_in_region)) | |
d0a9b5bc | 317 | && r1->dirty_log_mask == r2->dirty_log_mask |
5f9a5ea1 | 318 | && r1->romd_mode == r2->romd_mode |
fb1cd6f9 | 319 | && r1->readonly == r2->readonly; |
3d8e6bf9 AK |
320 | } |
321 | ||
8508e024 | 322 | /* Attempt to simplify a view by merging adjacent ranges */ |
3d8e6bf9 AK |
323 | static void flatview_simplify(FlatView *view) |
324 | { | |
325 | unsigned i, j; | |
326 | ||
327 | i = 0; | |
328 | while (i < view->nr) { | |
329 | j = i + 1; | |
330 | while (j < view->nr | |
331 | && can_merge(&view->ranges[j-1], &view->ranges[j])) { | |
08dafab4 | 332 | int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size); |
3d8e6bf9 AK |
333 | ++j; |
334 | } | |
335 | ++i; | |
336 | memmove(&view->ranges[i], &view->ranges[j], | |
337 | (view->nr - j) * sizeof(view->ranges[j])); | |
338 | view->nr -= j - i; | |
339 | } | |
340 | } | |
341 | ||
e11ef3d1 PB |
342 | static bool memory_region_wrong_endianness(MemoryRegion *mr) |
343 | { | |
344 | #ifdef TARGET_WORDS_BIGENDIAN | |
345 | return mr->ops->endianness == DEVICE_LITTLE_ENDIAN; | |
346 | #else | |
347 | return mr->ops->endianness == DEVICE_BIG_ENDIAN; | |
348 | #endif | |
349 | } | |
350 | ||
351 | static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size) | |
352 | { | |
353 | if (memory_region_wrong_endianness(mr)) { | |
354 | switch (size) { | |
355 | case 1: | |
356 | break; | |
357 | case 2: | |
358 | *data = bswap16(*data); | |
359 | break; | |
360 | case 4: | |
361 | *data = bswap32(*data); | |
362 | break; | |
363 | case 8: | |
364 | *data = bswap64(*data); | |
365 | break; | |
366 | default: | |
367 | abort(); | |
368 | } | |
369 | } | |
370 | } | |
371 | ||
547e9201 | 372 | static void memory_region_oldmmio_read_accessor(MemoryRegion *mr, |
ce5d2f33 PB |
373 | hwaddr addr, |
374 | uint64_t *value, | |
375 | unsigned size, | |
376 | unsigned shift, | |
377 | uint64_t mask) | |
378 | { | |
ce5d2f33 PB |
379 | uint64_t tmp; |
380 | ||
381 | tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr); | |
382 | *value |= (tmp & mask) << shift; | |
383 | } | |
384 | ||
547e9201 | 385 | static void memory_region_read_accessor(MemoryRegion *mr, |
a8170e5e | 386 | hwaddr addr, |
164a4dcd AK |
387 | uint64_t *value, |
388 | unsigned size, | |
389 | unsigned shift, | |
390 | uint64_t mask) | |
391 | { | |
164a4dcd AK |
392 | uint64_t tmp; |
393 | ||
d410515e JK |
394 | if (mr->flush_coalesced_mmio) { |
395 | qemu_flush_coalesced_mmio_buffer(); | |
396 | } | |
164a4dcd AK |
397 | tmp = mr->ops->read(mr->opaque, addr, size); |
398 | *value |= (tmp & mask) << shift; | |
399 | } | |
400 | ||
547e9201 | 401 | static void memory_region_oldmmio_write_accessor(MemoryRegion *mr, |
ce5d2f33 PB |
402 | hwaddr addr, |
403 | uint64_t *value, | |
404 | unsigned size, | |
405 | unsigned shift, | |
406 | uint64_t mask) | |
407 | { | |
ce5d2f33 PB |
408 | uint64_t tmp; |
409 | ||
410 | tmp = (*value >> shift) & mask; | |
411 | mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp); | |
412 | } | |
413 | ||
547e9201 | 414 | static void memory_region_write_accessor(MemoryRegion *mr, |
a8170e5e | 415 | hwaddr addr, |
164a4dcd AK |
416 | uint64_t *value, |
417 | unsigned size, | |
418 | unsigned shift, | |
419 | uint64_t mask) | |
420 | { | |
164a4dcd AK |
421 | uint64_t tmp; |
422 | ||
d410515e JK |
423 | if (mr->flush_coalesced_mmio) { |
424 | qemu_flush_coalesced_mmio_buffer(); | |
425 | } | |
164a4dcd AK |
426 | tmp = (*value >> shift) & mask; |
427 | mr->ops->write(mr->opaque, addr, tmp, size); | |
428 | } | |
429 | ||
a8170e5e | 430 | static void access_with_adjusted_size(hwaddr addr, |
164a4dcd AK |
431 | uint64_t *value, |
432 | unsigned size, | |
433 | unsigned access_size_min, | |
434 | unsigned access_size_max, | |
547e9201 | 435 | void (*access)(MemoryRegion *mr, |
a8170e5e | 436 | hwaddr addr, |
164a4dcd AK |
437 | uint64_t *value, |
438 | unsigned size, | |
439 | unsigned shift, | |
440 | uint64_t mask), | |
547e9201 | 441 | MemoryRegion *mr) |
164a4dcd AK |
442 | { |
443 | uint64_t access_mask; | |
444 | unsigned access_size; | |
445 | unsigned i; | |
446 | ||
447 | if (!access_size_min) { | |
448 | access_size_min = 1; | |
449 | } | |
450 | if (!access_size_max) { | |
451 | access_size_max = 4; | |
452 | } | |
ce5d2f33 PB |
453 | |
454 | /* FIXME: support unaligned access? */ | |
164a4dcd AK |
455 | access_size = MAX(MIN(size, access_size_max), access_size_min); |
456 | access_mask = -1ULL >> (64 - access_size * 8); | |
457 | for (i = 0; i < size; i += access_size) { | |
08521e28 | 458 | #ifdef TARGET_WORDS_BIGENDIAN |
547e9201 | 459 | access(mr, addr + i, value, access_size, |
08521e28 PB |
460 | (size - access_size - i) * 8, access_mask); |
461 | #else | |
547e9201 | 462 | access(mr, addr + i, value, access_size, i * 8, access_mask); |
08521e28 | 463 | #endif |
164a4dcd AK |
464 | } |
465 | } | |
466 | ||
e2177955 AK |
467 | static AddressSpace *memory_region_to_address_space(MemoryRegion *mr) |
468 | { | |
0d673e36 AK |
469 | AddressSpace *as; |
470 | ||
e2177955 AK |
471 | while (mr->parent) { |
472 | mr = mr->parent; | |
473 | } | |
0d673e36 AK |
474 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
475 | if (mr == as->root) { | |
476 | return as; | |
477 | } | |
e2177955 AK |
478 | } |
479 | abort(); | |
480 | } | |
481 | ||
093bc2cd AK |
482 | /* Render a memory region into the global view. Ranges in @view obscure |
483 | * ranges in @mr. | |
484 | */ | |
485 | static void render_memory_region(FlatView *view, | |
486 | MemoryRegion *mr, | |
08dafab4 | 487 | Int128 base, |
fb1cd6f9 AK |
488 | AddrRange clip, |
489 | bool readonly) | |
093bc2cd AK |
490 | { |
491 | MemoryRegion *subregion; | |
492 | unsigned i; | |
a8170e5e | 493 | hwaddr offset_in_region; |
08dafab4 AK |
494 | Int128 remain; |
495 | Int128 now; | |
093bc2cd AK |
496 | FlatRange fr; |
497 | AddrRange tmp; | |
498 | ||
6bba19ba AK |
499 | if (!mr->enabled) { |
500 | return; | |
501 | } | |
502 | ||
08dafab4 | 503 | int128_addto(&base, int128_make64(mr->addr)); |
fb1cd6f9 | 504 | readonly |= mr->readonly; |
093bc2cd AK |
505 | |
506 | tmp = addrrange_make(base, mr->size); | |
507 | ||
508 | if (!addrrange_intersects(tmp, clip)) { | |
509 | return; | |
510 | } | |
511 | ||
512 | clip = addrrange_intersection(tmp, clip); | |
513 | ||
514 | if (mr->alias) { | |
08dafab4 AK |
515 | int128_subfrom(&base, int128_make64(mr->alias->addr)); |
516 | int128_subfrom(&base, int128_make64(mr->alias_offset)); | |
fb1cd6f9 | 517 | render_memory_region(view, mr->alias, base, clip, readonly); |
093bc2cd AK |
518 | return; |
519 | } | |
520 | ||
521 | /* Render subregions in priority order. */ | |
522 | QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) { | |
fb1cd6f9 | 523 | render_memory_region(view, subregion, base, clip, readonly); |
093bc2cd AK |
524 | } |
525 | ||
14a3c10a | 526 | if (!mr->terminates) { |
093bc2cd AK |
527 | return; |
528 | } | |
529 | ||
08dafab4 | 530 | offset_in_region = int128_get64(int128_sub(clip.start, base)); |
093bc2cd AK |
531 | base = clip.start; |
532 | remain = clip.size; | |
533 | ||
2eb74e1a PC |
534 | fr.mr = mr; |
535 | fr.dirty_log_mask = mr->dirty_log_mask; | |
536 | fr.romd_mode = mr->romd_mode; | |
537 | fr.readonly = readonly; | |
538 | ||
093bc2cd | 539 | /* Render the region itself into any gaps left by the current view. */ |
08dafab4 AK |
540 | for (i = 0; i < view->nr && int128_nz(remain); ++i) { |
541 | if (int128_ge(base, addrrange_end(view->ranges[i].addr))) { | |
093bc2cd AK |
542 | continue; |
543 | } | |
08dafab4 AK |
544 | if (int128_lt(base, view->ranges[i].addr.start)) { |
545 | now = int128_min(remain, | |
546 | int128_sub(view->ranges[i].addr.start, base)); | |
093bc2cd AK |
547 | fr.offset_in_region = offset_in_region; |
548 | fr.addr = addrrange_make(base, now); | |
549 | flatview_insert(view, i, &fr); | |
550 | ++i; | |
08dafab4 AK |
551 | int128_addto(&base, now); |
552 | offset_in_region += int128_get64(now); | |
553 | int128_subfrom(&remain, now); | |
093bc2cd | 554 | } |
d26a8cae AK |
555 | now = int128_sub(int128_min(int128_add(base, remain), |
556 | addrrange_end(view->ranges[i].addr)), | |
557 | base); | |
558 | int128_addto(&base, now); | |
559 | offset_in_region += int128_get64(now); | |
560 | int128_subfrom(&remain, now); | |
093bc2cd | 561 | } |
08dafab4 | 562 | if (int128_nz(remain)) { |
093bc2cd AK |
563 | fr.offset_in_region = offset_in_region; |
564 | fr.addr = addrrange_make(base, remain); | |
565 | flatview_insert(view, i, &fr); | |
566 | } | |
567 | } | |
568 | ||
569 | /* Render a memory topology into a list of disjoint absolute ranges. */ | |
a9a0c06d | 570 | static FlatView *generate_memory_topology(MemoryRegion *mr) |
093bc2cd | 571 | { |
a9a0c06d | 572 | FlatView *view; |
093bc2cd | 573 | |
a9a0c06d PB |
574 | view = g_new(FlatView, 1); |
575 | flatview_init(view); | |
093bc2cd | 576 | |
83f3c251 | 577 | if (mr) { |
a9a0c06d | 578 | render_memory_region(view, mr, int128_zero(), |
83f3c251 AK |
579 | addrrange_make(int128_zero(), int128_2_64()), false); |
580 | } | |
a9a0c06d | 581 | flatview_simplify(view); |
093bc2cd AK |
582 | |
583 | return view; | |
584 | } | |
585 | ||
3e9d69e7 AK |
586 | static void address_space_add_del_ioeventfds(AddressSpace *as, |
587 | MemoryRegionIoeventfd *fds_new, | |
588 | unsigned fds_new_nb, | |
589 | MemoryRegionIoeventfd *fds_old, | |
590 | unsigned fds_old_nb) | |
591 | { | |
592 | unsigned iold, inew; | |
80a1ea37 AK |
593 | MemoryRegionIoeventfd *fd; |
594 | MemoryRegionSection section; | |
3e9d69e7 AK |
595 | |
596 | /* Generate a symmetric difference of the old and new fd sets, adding | |
597 | * and deleting as necessary. | |
598 | */ | |
599 | ||
600 | iold = inew = 0; | |
601 | while (iold < fds_old_nb || inew < fds_new_nb) { | |
602 | if (iold < fds_old_nb | |
603 | && (inew == fds_new_nb | |
604 | || memory_region_ioeventfd_before(fds_old[iold], | |
605 | fds_new[inew]))) { | |
80a1ea37 AK |
606 | fd = &fds_old[iold]; |
607 | section = (MemoryRegionSection) { | |
f6790af6 | 608 | .address_space = as, |
80a1ea37 | 609 | .offset_within_address_space = int128_get64(fd->addr.start), |
052e87b0 | 610 | .size = fd->addr.size, |
80a1ea37 AK |
611 | }; |
612 | MEMORY_LISTENER_CALL(eventfd_del, Forward, §ion, | |
753d5e14 | 613 | fd->match_data, fd->data, fd->e); |
3e9d69e7 AK |
614 | ++iold; |
615 | } else if (inew < fds_new_nb | |
616 | && (iold == fds_old_nb | |
617 | || memory_region_ioeventfd_before(fds_new[inew], | |
618 | fds_old[iold]))) { | |
80a1ea37 AK |
619 | fd = &fds_new[inew]; |
620 | section = (MemoryRegionSection) { | |
f6790af6 | 621 | .address_space = as, |
80a1ea37 | 622 | .offset_within_address_space = int128_get64(fd->addr.start), |
052e87b0 | 623 | .size = fd->addr.size, |
80a1ea37 AK |
624 | }; |
625 | MEMORY_LISTENER_CALL(eventfd_add, Reverse, §ion, | |
753d5e14 | 626 | fd->match_data, fd->data, fd->e); |
3e9d69e7 AK |
627 | ++inew; |
628 | } else { | |
629 | ++iold; | |
630 | ++inew; | |
631 | } | |
632 | } | |
633 | } | |
634 | ||
856d7245 PB |
635 | static FlatView *address_space_get_flatview(AddressSpace *as) |
636 | { | |
637 | FlatView *view; | |
638 | ||
639 | qemu_mutex_lock(&flat_view_mutex); | |
640 | view = as->current_map; | |
641 | flatview_ref(view); | |
642 | qemu_mutex_unlock(&flat_view_mutex); | |
643 | return view; | |
644 | } | |
645 | ||
3e9d69e7 AK |
646 | static void address_space_update_ioeventfds(AddressSpace *as) |
647 | { | |
99e86347 | 648 | FlatView *view; |
3e9d69e7 AK |
649 | FlatRange *fr; |
650 | unsigned ioeventfd_nb = 0; | |
651 | MemoryRegionIoeventfd *ioeventfds = NULL; | |
652 | AddrRange tmp; | |
653 | unsigned i; | |
654 | ||
856d7245 | 655 | view = address_space_get_flatview(as); |
99e86347 | 656 | FOR_EACH_FLAT_RANGE(fr, view) { |
3e9d69e7 AK |
657 | for (i = 0; i < fr->mr->ioeventfd_nb; ++i) { |
658 | tmp = addrrange_shift(fr->mr->ioeventfds[i].addr, | |
08dafab4 AK |
659 | int128_sub(fr->addr.start, |
660 | int128_make64(fr->offset_in_region))); | |
3e9d69e7 AK |
661 | if (addrrange_intersects(fr->addr, tmp)) { |
662 | ++ioeventfd_nb; | |
7267c094 | 663 | ioeventfds = g_realloc(ioeventfds, |
3e9d69e7 AK |
664 | ioeventfd_nb * sizeof(*ioeventfds)); |
665 | ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i]; | |
666 | ioeventfds[ioeventfd_nb-1].addr = tmp; | |
667 | } | |
668 | } | |
669 | } | |
670 | ||
671 | address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb, | |
672 | as->ioeventfds, as->ioeventfd_nb); | |
673 | ||
7267c094 | 674 | g_free(as->ioeventfds); |
3e9d69e7 AK |
675 | as->ioeventfds = ioeventfds; |
676 | as->ioeventfd_nb = ioeventfd_nb; | |
856d7245 | 677 | flatview_unref(view); |
3e9d69e7 AK |
678 | } |
679 | ||
b8af1afb | 680 | static void address_space_update_topology_pass(AddressSpace *as, |
a9a0c06d PB |
681 | const FlatView *old_view, |
682 | const FlatView *new_view, | |
b8af1afb | 683 | bool adding) |
093bc2cd | 684 | { |
093bc2cd AK |
685 | unsigned iold, inew; |
686 | FlatRange *frold, *frnew; | |
093bc2cd AK |
687 | |
688 | /* Generate a symmetric difference of the old and new memory maps. | |
689 | * Kill ranges in the old map, and instantiate ranges in the new map. | |
690 | */ | |
691 | iold = inew = 0; | |
a9a0c06d PB |
692 | while (iold < old_view->nr || inew < new_view->nr) { |
693 | if (iold < old_view->nr) { | |
694 | frold = &old_view->ranges[iold]; | |
093bc2cd AK |
695 | } else { |
696 | frold = NULL; | |
697 | } | |
a9a0c06d PB |
698 | if (inew < new_view->nr) { |
699 | frnew = &new_view->ranges[inew]; | |
093bc2cd AK |
700 | } else { |
701 | frnew = NULL; | |
702 | } | |
703 | ||
704 | if (frold | |
705 | && (!frnew | |
08dafab4 AK |
706 | || int128_lt(frold->addr.start, frnew->addr.start) |
707 | || (int128_eq(frold->addr.start, frnew->addr.start) | |
093bc2cd | 708 | && !flatrange_equal(frold, frnew)))) { |
41a6e477 | 709 | /* In old but not in new, or in both but attributes changed. */ |
093bc2cd | 710 | |
b8af1afb | 711 | if (!adding) { |
72e22d2f | 712 | MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del); |
b8af1afb AK |
713 | } |
714 | ||
093bc2cd AK |
715 | ++iold; |
716 | } else if (frold && frnew && flatrange_equal(frold, frnew)) { | |
41a6e477 | 717 | /* In both and unchanged (except logging may have changed) */ |
093bc2cd | 718 | |
b8af1afb | 719 | if (adding) { |
50c1e149 | 720 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop); |
b8af1afb | 721 | if (frold->dirty_log_mask && !frnew->dirty_log_mask) { |
72e22d2f | 722 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop); |
b8af1afb | 723 | } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) { |
72e22d2f | 724 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start); |
b8af1afb | 725 | } |
5a583347 AK |
726 | } |
727 | ||
093bc2cd AK |
728 | ++iold; |
729 | ++inew; | |
093bc2cd AK |
730 | } else { |
731 | /* In new */ | |
732 | ||
b8af1afb | 733 | if (adding) { |
72e22d2f | 734 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add); |
b8af1afb AK |
735 | } |
736 | ||
093bc2cd AK |
737 | ++inew; |
738 | } | |
739 | } | |
b8af1afb AK |
740 | } |
741 | ||
742 | ||
743 | static void address_space_update_topology(AddressSpace *as) | |
744 | { | |
856d7245 | 745 | FlatView *old_view = address_space_get_flatview(as); |
a9a0c06d | 746 | FlatView *new_view = generate_memory_topology(as->root); |
b8af1afb AK |
747 | |
748 | address_space_update_topology_pass(as, old_view, new_view, false); | |
749 | address_space_update_topology_pass(as, old_view, new_view, true); | |
750 | ||
856d7245 PB |
751 | qemu_mutex_lock(&flat_view_mutex); |
752 | flatview_unref(as->current_map); | |
a9a0c06d | 753 | as->current_map = new_view; |
856d7245 PB |
754 | qemu_mutex_unlock(&flat_view_mutex); |
755 | ||
756 | /* Note that all the old MemoryRegions are still alive up to this | |
757 | * point. This relieves most MemoryListeners from the need to | |
758 | * ref/unref the MemoryRegions they get---unless they use them | |
759 | * outside the iothread mutex, in which case precise reference | |
760 | * counting is necessary. | |
761 | */ | |
762 | flatview_unref(old_view); | |
763 | ||
3e9d69e7 | 764 | address_space_update_ioeventfds(as); |
093bc2cd AK |
765 | } |
766 | ||
4ef4db86 AK |
767 | void memory_region_transaction_begin(void) |
768 | { | |
bb880ded | 769 | qemu_flush_coalesced_mmio_buffer(); |
4ef4db86 AK |
770 | ++memory_region_transaction_depth; |
771 | } | |
772 | ||
773 | void memory_region_transaction_commit(void) | |
774 | { | |
0d673e36 AK |
775 | AddressSpace *as; |
776 | ||
4ef4db86 AK |
777 | assert(memory_region_transaction_depth); |
778 | --memory_region_transaction_depth; | |
22bde714 JK |
779 | if (!memory_region_transaction_depth && memory_region_update_pending) { |
780 | memory_region_update_pending = false; | |
02e2b95f JK |
781 | MEMORY_LISTENER_CALL_GLOBAL(begin, Forward); |
782 | ||
0d673e36 AK |
783 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
784 | address_space_update_topology(as); | |
02e2b95f JK |
785 | } |
786 | ||
787 | MEMORY_LISTENER_CALL_GLOBAL(commit, Forward); | |
e87c099f | 788 | } |
4ef4db86 AK |
789 | } |
790 | ||
545e92e0 AK |
791 | static void memory_region_destructor_none(MemoryRegion *mr) |
792 | { | |
793 | } | |
794 | ||
795 | static void memory_region_destructor_ram(MemoryRegion *mr) | |
796 | { | |
797 | qemu_ram_free(mr->ram_addr); | |
798 | } | |
799 | ||
dfde4e6e PB |
800 | static void memory_region_destructor_alias(MemoryRegion *mr) |
801 | { | |
802 | memory_region_unref(mr->alias); | |
803 | } | |
804 | ||
545e92e0 AK |
805 | static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr) |
806 | { | |
807 | qemu_ram_free_from_ptr(mr->ram_addr); | |
808 | } | |
809 | ||
d0a9b5bc AK |
810 | static void memory_region_destructor_rom_device(MemoryRegion *mr) |
811 | { | |
812 | qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK); | |
d0a9b5bc AK |
813 | } |
814 | ||
093bc2cd | 815 | void memory_region_init(MemoryRegion *mr, |
2c9b15ca | 816 | Object *owner, |
093bc2cd AK |
817 | const char *name, |
818 | uint64_t size) | |
819 | { | |
2cdfcf27 PB |
820 | mr->ops = &unassigned_mem_ops; |
821 | mr->opaque = NULL; | |
2c9b15ca | 822 | mr->owner = owner; |
30951157 | 823 | mr->iommu_ops = NULL; |
093bc2cd | 824 | mr->parent = NULL; |
08dafab4 AK |
825 | mr->size = int128_make64(size); |
826 | if (size == UINT64_MAX) { | |
827 | mr->size = int128_2_64(); | |
828 | } | |
093bc2cd | 829 | mr->addr = 0; |
b3b00c78 | 830 | mr->subpage = false; |
6bba19ba | 831 | mr->enabled = true; |
14a3c10a | 832 | mr->terminates = false; |
8ea9252a | 833 | mr->ram = false; |
5f9a5ea1 | 834 | mr->romd_mode = true; |
fb1cd6f9 | 835 | mr->readonly = false; |
75c578dc | 836 | mr->rom_device = false; |
545e92e0 | 837 | mr->destructor = memory_region_destructor_none; |
093bc2cd AK |
838 | mr->priority = 0; |
839 | mr->may_overlap = false; | |
840 | mr->alias = NULL; | |
841 | QTAILQ_INIT(&mr->subregions); | |
842 | memset(&mr->subregions_link, 0, sizeof mr->subregions_link); | |
843 | QTAILQ_INIT(&mr->coalesced); | |
7267c094 | 844 | mr->name = g_strdup(name); |
5a583347 | 845 | mr->dirty_log_mask = 0; |
3e9d69e7 AK |
846 | mr->ioeventfd_nb = 0; |
847 | mr->ioeventfds = NULL; | |
d410515e | 848 | mr->flush_coalesced_mmio = false; |
093bc2cd AK |
849 | } |
850 | ||
b018ddf6 PB |
851 | static uint64_t unassigned_mem_read(void *opaque, hwaddr addr, |
852 | unsigned size) | |
853 | { | |
854 | #ifdef DEBUG_UNASSIGNED | |
855 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
856 | #endif | |
4917cf44 AF |
857 | if (current_cpu != NULL) { |
858 | cpu_unassigned_access(current_cpu, addr, false, false, 0, size); | |
c658b94f | 859 | } |
9b8c6924 | 860 | return -1ULL; |
b018ddf6 PB |
861 | } |
862 | ||
863 | static void unassigned_mem_write(void *opaque, hwaddr addr, | |
864 | uint64_t val, unsigned size) | |
865 | { | |
866 | #ifdef DEBUG_UNASSIGNED | |
867 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); | |
868 | #endif | |
4917cf44 AF |
869 | if (current_cpu != NULL) { |
870 | cpu_unassigned_access(current_cpu, addr, true, false, 0, size); | |
c658b94f | 871 | } |
b018ddf6 PB |
872 | } |
873 | ||
d197063f PB |
874 | static bool unassigned_mem_accepts(void *opaque, hwaddr addr, |
875 | unsigned size, bool is_write) | |
876 | { | |
877 | return false; | |
878 | } | |
879 | ||
880 | const MemoryRegionOps unassigned_mem_ops = { | |
881 | .valid.accepts = unassigned_mem_accepts, | |
882 | .endianness = DEVICE_NATIVE_ENDIAN, | |
883 | }; | |
884 | ||
d2702032 PB |
885 | bool memory_region_access_valid(MemoryRegion *mr, |
886 | hwaddr addr, | |
887 | unsigned size, | |
888 | bool is_write) | |
093bc2cd | 889 | { |
a014ed07 PB |
890 | int access_size_min, access_size_max; |
891 | int access_size, i; | |
897fa7cf | 892 | |
093bc2cd AK |
893 | if (!mr->ops->valid.unaligned && (addr & (size - 1))) { |
894 | return false; | |
895 | } | |
896 | ||
a014ed07 | 897 | if (!mr->ops->valid.accepts) { |
093bc2cd AK |
898 | return true; |
899 | } | |
900 | ||
a014ed07 PB |
901 | access_size_min = mr->ops->valid.min_access_size; |
902 | if (!mr->ops->valid.min_access_size) { | |
903 | access_size_min = 1; | |
904 | } | |
905 | ||
906 | access_size_max = mr->ops->valid.max_access_size; | |
907 | if (!mr->ops->valid.max_access_size) { | |
908 | access_size_max = 4; | |
909 | } | |
910 | ||
911 | access_size = MAX(MIN(size, access_size_max), access_size_min); | |
912 | for (i = 0; i < size; i += access_size) { | |
913 | if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size, | |
914 | is_write)) { | |
915 | return false; | |
916 | } | |
093bc2cd | 917 | } |
a014ed07 | 918 | |
093bc2cd AK |
919 | return true; |
920 | } | |
921 | ||
a621f38d | 922 | static uint64_t memory_region_dispatch_read1(MemoryRegion *mr, |
a8170e5e | 923 | hwaddr addr, |
a621f38d | 924 | unsigned size) |
093bc2cd | 925 | { |
164a4dcd | 926 | uint64_t data = 0; |
093bc2cd | 927 | |
ce5d2f33 PB |
928 | if (mr->ops->read) { |
929 | access_with_adjusted_size(addr, &data, size, | |
930 | mr->ops->impl.min_access_size, | |
931 | mr->ops->impl.max_access_size, | |
932 | memory_region_read_accessor, mr); | |
933 | } else { | |
934 | access_with_adjusted_size(addr, &data, size, 1, 4, | |
935 | memory_region_oldmmio_read_accessor, mr); | |
74901c3b AK |
936 | } |
937 | ||
093bc2cd AK |
938 | return data; |
939 | } | |
940 | ||
791af8c8 PB |
941 | static bool memory_region_dispatch_read(MemoryRegion *mr, |
942 | hwaddr addr, | |
943 | uint64_t *pval, | |
944 | unsigned size) | |
a621f38d | 945 | { |
791af8c8 PB |
946 | if (!memory_region_access_valid(mr, addr, size, false)) { |
947 | *pval = unassigned_mem_read(mr, addr, size); | |
948 | return true; | |
949 | } | |
a621f38d | 950 | |
791af8c8 PB |
951 | *pval = memory_region_dispatch_read1(mr, addr, size); |
952 | adjust_endianness(mr, pval, size); | |
953 | return false; | |
a621f38d | 954 | } |
093bc2cd | 955 | |
791af8c8 | 956 | static bool memory_region_dispatch_write(MemoryRegion *mr, |
a8170e5e | 957 | hwaddr addr, |
a621f38d AK |
958 | uint64_t data, |
959 | unsigned size) | |
960 | { | |
897fa7cf | 961 | if (!memory_region_access_valid(mr, addr, size, true)) { |
b018ddf6 | 962 | unassigned_mem_write(mr, addr, data, size); |
791af8c8 | 963 | return true; |
093bc2cd AK |
964 | } |
965 | ||
a621f38d AK |
966 | adjust_endianness(mr, &data, size); |
967 | ||
ce5d2f33 PB |
968 | if (mr->ops->write) { |
969 | access_with_adjusted_size(addr, &data, size, | |
970 | mr->ops->impl.min_access_size, | |
971 | mr->ops->impl.max_access_size, | |
972 | memory_region_write_accessor, mr); | |
973 | } else { | |
974 | access_with_adjusted_size(addr, &data, size, 1, 4, | |
975 | memory_region_oldmmio_write_accessor, mr); | |
74901c3b | 976 | } |
791af8c8 | 977 | return false; |
093bc2cd AK |
978 | } |
979 | ||
093bc2cd | 980 | void memory_region_init_io(MemoryRegion *mr, |
2c9b15ca | 981 | Object *owner, |
093bc2cd AK |
982 | const MemoryRegionOps *ops, |
983 | void *opaque, | |
984 | const char *name, | |
985 | uint64_t size) | |
986 | { | |
2c9b15ca | 987 | memory_region_init(mr, owner, name, size); |
093bc2cd AK |
988 | mr->ops = ops; |
989 | mr->opaque = opaque; | |
14a3c10a | 990 | mr->terminates = true; |
97161e17 | 991 | mr->ram_addr = ~(ram_addr_t)0; |
093bc2cd AK |
992 | } |
993 | ||
994 | void memory_region_init_ram(MemoryRegion *mr, | |
2c9b15ca | 995 | Object *owner, |
093bc2cd AK |
996 | const char *name, |
997 | uint64_t size) | |
998 | { | |
2c9b15ca | 999 | memory_region_init(mr, owner, name, size); |
8ea9252a | 1000 | mr->ram = true; |
14a3c10a | 1001 | mr->terminates = true; |
545e92e0 | 1002 | mr->destructor = memory_region_destructor_ram; |
c5705a77 | 1003 | mr->ram_addr = qemu_ram_alloc(size, mr); |
093bc2cd AK |
1004 | } |
1005 | ||
1006 | void memory_region_init_ram_ptr(MemoryRegion *mr, | |
2c9b15ca | 1007 | Object *owner, |
093bc2cd AK |
1008 | const char *name, |
1009 | uint64_t size, | |
1010 | void *ptr) | |
1011 | { | |
2c9b15ca | 1012 | memory_region_init(mr, owner, name, size); |
8ea9252a | 1013 | mr->ram = true; |
14a3c10a | 1014 | mr->terminates = true; |
545e92e0 | 1015 | mr->destructor = memory_region_destructor_ram_from_ptr; |
c5705a77 | 1016 | mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr); |
093bc2cd AK |
1017 | } |
1018 | ||
1019 | void memory_region_init_alias(MemoryRegion *mr, | |
2c9b15ca | 1020 | Object *owner, |
093bc2cd AK |
1021 | const char *name, |
1022 | MemoryRegion *orig, | |
a8170e5e | 1023 | hwaddr offset, |
093bc2cd AK |
1024 | uint64_t size) |
1025 | { | |
2c9b15ca | 1026 | memory_region_init(mr, owner, name, size); |
dfde4e6e PB |
1027 | memory_region_ref(orig); |
1028 | mr->destructor = memory_region_destructor_alias; | |
093bc2cd AK |
1029 | mr->alias = orig; |
1030 | mr->alias_offset = offset; | |
1031 | } | |
1032 | ||
d0a9b5bc | 1033 | void memory_region_init_rom_device(MemoryRegion *mr, |
2c9b15ca | 1034 | Object *owner, |
d0a9b5bc | 1035 | const MemoryRegionOps *ops, |
75f5941c | 1036 | void *opaque, |
d0a9b5bc AK |
1037 | const char *name, |
1038 | uint64_t size) | |
1039 | { | |
2c9b15ca | 1040 | memory_region_init(mr, owner, name, size); |
7bc2b9cd | 1041 | mr->ops = ops; |
75f5941c | 1042 | mr->opaque = opaque; |
d0a9b5bc | 1043 | mr->terminates = true; |
75c578dc | 1044 | mr->rom_device = true; |
d0a9b5bc | 1045 | mr->destructor = memory_region_destructor_rom_device; |
c5705a77 | 1046 | mr->ram_addr = qemu_ram_alloc(size, mr); |
d0a9b5bc AK |
1047 | } |
1048 | ||
30951157 | 1049 | void memory_region_init_iommu(MemoryRegion *mr, |
2c9b15ca | 1050 | Object *owner, |
30951157 AK |
1051 | const MemoryRegionIOMMUOps *ops, |
1052 | const char *name, | |
1053 | uint64_t size) | |
1054 | { | |
2c9b15ca | 1055 | memory_region_init(mr, owner, name, size); |
30951157 AK |
1056 | mr->iommu_ops = ops, |
1057 | mr->terminates = true; /* then re-forwards */ | |
06866575 | 1058 | notifier_list_init(&mr->iommu_notify); |
30951157 AK |
1059 | } |
1060 | ||
1660e72d | 1061 | void memory_region_init_reservation(MemoryRegion *mr, |
2c9b15ca | 1062 | Object *owner, |
1660e72d JK |
1063 | const char *name, |
1064 | uint64_t size) | |
1065 | { | |
2c9b15ca | 1066 | memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size); |
1660e72d JK |
1067 | } |
1068 | ||
093bc2cd AK |
1069 | void memory_region_destroy(MemoryRegion *mr) |
1070 | { | |
1071 | assert(QTAILQ_EMPTY(&mr->subregions)); | |
2be0e25f | 1072 | assert(memory_region_transaction_depth == 0); |
545e92e0 | 1073 | mr->destructor(mr); |
093bc2cd | 1074 | memory_region_clear_coalescing(mr); |
7267c094 AL |
1075 | g_free((char *)mr->name); |
1076 | g_free(mr->ioeventfds); | |
093bc2cd AK |
1077 | } |
1078 | ||
803c0816 PB |
1079 | Object *memory_region_owner(MemoryRegion *mr) |
1080 | { | |
1081 | return mr->owner; | |
1082 | } | |
1083 | ||
46637be2 PB |
1084 | void memory_region_ref(MemoryRegion *mr) |
1085 | { | |
1086 | if (mr && mr->owner) { | |
1087 | object_ref(mr->owner); | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | void memory_region_unref(MemoryRegion *mr) | |
1092 | { | |
1093 | if (mr && mr->owner) { | |
1094 | object_unref(mr->owner); | |
1095 | } | |
1096 | } | |
1097 | ||
093bc2cd AK |
1098 | uint64_t memory_region_size(MemoryRegion *mr) |
1099 | { | |
08dafab4 AK |
1100 | if (int128_eq(mr->size, int128_2_64())) { |
1101 | return UINT64_MAX; | |
1102 | } | |
1103 | return int128_get64(mr->size); | |
093bc2cd AK |
1104 | } |
1105 | ||
8991c79b AK |
1106 | const char *memory_region_name(MemoryRegion *mr) |
1107 | { | |
1108 | return mr->name; | |
1109 | } | |
1110 | ||
8ea9252a AK |
1111 | bool memory_region_is_ram(MemoryRegion *mr) |
1112 | { | |
1113 | return mr->ram; | |
1114 | } | |
1115 | ||
55043ba3 AK |
1116 | bool memory_region_is_logging(MemoryRegion *mr) |
1117 | { | |
1118 | return mr->dirty_log_mask; | |
1119 | } | |
1120 | ||
ce7923da AK |
1121 | bool memory_region_is_rom(MemoryRegion *mr) |
1122 | { | |
1123 | return mr->ram && mr->readonly; | |
1124 | } | |
1125 | ||
30951157 AK |
1126 | bool memory_region_is_iommu(MemoryRegion *mr) |
1127 | { | |
1128 | return mr->iommu_ops; | |
1129 | } | |
1130 | ||
06866575 DG |
1131 | void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n) |
1132 | { | |
1133 | notifier_list_add(&mr->iommu_notify, n); | |
1134 | } | |
1135 | ||
1136 | void memory_region_unregister_iommu_notifier(Notifier *n) | |
1137 | { | |
1138 | notifier_remove(n); | |
1139 | } | |
1140 | ||
1141 | void memory_region_notify_iommu(MemoryRegion *mr, | |
1142 | IOMMUTLBEntry entry) | |
1143 | { | |
1144 | assert(memory_region_is_iommu(mr)); | |
1145 | notifier_list_notify(&mr->iommu_notify, &entry); | |
1146 | } | |
1147 | ||
093bc2cd AK |
1148 | void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) |
1149 | { | |
5a583347 AK |
1150 | uint8_t mask = 1 << client; |
1151 | ||
59023ef4 | 1152 | memory_region_transaction_begin(); |
5a583347 | 1153 | mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); |
22bde714 | 1154 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1155 | memory_region_transaction_commit(); |
093bc2cd AK |
1156 | } |
1157 | ||
a8170e5e AK |
1158 | bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr, |
1159 | hwaddr size, unsigned client) | |
093bc2cd | 1160 | { |
14a3c10a | 1161 | assert(mr->terminates); |
cd7a45c9 BS |
1162 | return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, |
1163 | 1 << client); | |
093bc2cd AK |
1164 | } |
1165 | ||
a8170e5e AK |
1166 | void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr, |
1167 | hwaddr size) | |
093bc2cd | 1168 | { |
14a3c10a | 1169 | assert(mr->terminates); |
fd4aa979 | 1170 | return cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size, -1); |
093bc2cd AK |
1171 | } |
1172 | ||
6c279db8 JQ |
1173 | bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr, |
1174 | hwaddr size, unsigned client) | |
1175 | { | |
1176 | bool ret; | |
1177 | assert(mr->terminates); | |
1178 | ret = cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, | |
1179 | 1 << client); | |
1180 | if (ret) { | |
1181 | cpu_physical_memory_reset_dirty(mr->ram_addr + addr, | |
1182 | mr->ram_addr + addr + size, | |
1183 | 1 << client); | |
1184 | } | |
1185 | return ret; | |
1186 | } | |
1187 | ||
1188 | ||
093bc2cd AK |
1189 | void memory_region_sync_dirty_bitmap(MemoryRegion *mr) |
1190 | { | |
0d673e36 | 1191 | AddressSpace *as; |
5a583347 AK |
1192 | FlatRange *fr; |
1193 | ||
0d673e36 | 1194 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
856d7245 | 1195 | FlatView *view = address_space_get_flatview(as); |
99e86347 | 1196 | FOR_EACH_FLAT_RANGE(fr, view) { |
0d673e36 AK |
1197 | if (fr->mr == mr) { |
1198 | MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync); | |
1199 | } | |
5a583347 | 1200 | } |
856d7245 | 1201 | flatview_unref(view); |
5a583347 | 1202 | } |
093bc2cd AK |
1203 | } |
1204 | ||
1205 | void memory_region_set_readonly(MemoryRegion *mr, bool readonly) | |
1206 | { | |
fb1cd6f9 | 1207 | if (mr->readonly != readonly) { |
59023ef4 | 1208 | memory_region_transaction_begin(); |
fb1cd6f9 | 1209 | mr->readonly = readonly; |
22bde714 | 1210 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1211 | memory_region_transaction_commit(); |
fb1cd6f9 | 1212 | } |
093bc2cd AK |
1213 | } |
1214 | ||
5f9a5ea1 | 1215 | void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode) |
d0a9b5bc | 1216 | { |
5f9a5ea1 | 1217 | if (mr->romd_mode != romd_mode) { |
59023ef4 | 1218 | memory_region_transaction_begin(); |
5f9a5ea1 | 1219 | mr->romd_mode = romd_mode; |
22bde714 | 1220 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1221 | memory_region_transaction_commit(); |
d0a9b5bc AK |
1222 | } |
1223 | } | |
1224 | ||
a8170e5e AK |
1225 | void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr, |
1226 | hwaddr size, unsigned client) | |
093bc2cd | 1227 | { |
14a3c10a | 1228 | assert(mr->terminates); |
5a583347 AK |
1229 | cpu_physical_memory_reset_dirty(mr->ram_addr + addr, |
1230 | mr->ram_addr + addr + size, | |
1231 | 1 << client); | |
093bc2cd AK |
1232 | } |
1233 | ||
1234 | void *memory_region_get_ram_ptr(MemoryRegion *mr) | |
1235 | { | |
1236 | if (mr->alias) { | |
1237 | return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset; | |
1238 | } | |
1239 | ||
14a3c10a | 1240 | assert(mr->terminates); |
093bc2cd | 1241 | |
021d26d1 | 1242 | return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK); |
093bc2cd AK |
1243 | } |
1244 | ||
0d673e36 | 1245 | static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as) |
093bc2cd | 1246 | { |
99e86347 | 1247 | FlatView *view; |
093bc2cd AK |
1248 | FlatRange *fr; |
1249 | CoalescedMemoryRange *cmr; | |
1250 | AddrRange tmp; | |
95d2994a | 1251 | MemoryRegionSection section; |
093bc2cd | 1252 | |
856d7245 | 1253 | view = address_space_get_flatview(as); |
99e86347 | 1254 | FOR_EACH_FLAT_RANGE(fr, view) { |
093bc2cd | 1255 | if (fr->mr == mr) { |
95d2994a | 1256 | section = (MemoryRegionSection) { |
f6790af6 | 1257 | .address_space = as, |
95d2994a | 1258 | .offset_within_address_space = int128_get64(fr->addr.start), |
052e87b0 | 1259 | .size = fr->addr.size, |
95d2994a AK |
1260 | }; |
1261 | ||
1262 | MEMORY_LISTENER_CALL(coalesced_mmio_del, Reverse, §ion, | |
1263 | int128_get64(fr->addr.start), | |
1264 | int128_get64(fr->addr.size)); | |
093bc2cd AK |
1265 | QTAILQ_FOREACH(cmr, &mr->coalesced, link) { |
1266 | tmp = addrrange_shift(cmr->addr, | |
08dafab4 AK |
1267 | int128_sub(fr->addr.start, |
1268 | int128_make64(fr->offset_in_region))); | |
093bc2cd AK |
1269 | if (!addrrange_intersects(tmp, fr->addr)) { |
1270 | continue; | |
1271 | } | |
1272 | tmp = addrrange_intersection(tmp, fr->addr); | |
95d2994a AK |
1273 | MEMORY_LISTENER_CALL(coalesced_mmio_add, Forward, §ion, |
1274 | int128_get64(tmp.start), | |
1275 | int128_get64(tmp.size)); | |
093bc2cd AK |
1276 | } |
1277 | } | |
1278 | } | |
856d7245 | 1279 | flatview_unref(view); |
093bc2cd AK |
1280 | } |
1281 | ||
0d673e36 AK |
1282 | static void memory_region_update_coalesced_range(MemoryRegion *mr) |
1283 | { | |
1284 | AddressSpace *as; | |
1285 | ||
1286 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
1287 | memory_region_update_coalesced_range_as(mr, as); | |
1288 | } | |
1289 | } | |
1290 | ||
093bc2cd AK |
1291 | void memory_region_set_coalescing(MemoryRegion *mr) |
1292 | { | |
1293 | memory_region_clear_coalescing(mr); | |
08dafab4 | 1294 | memory_region_add_coalescing(mr, 0, int128_get64(mr->size)); |
093bc2cd AK |
1295 | } |
1296 | ||
1297 | void memory_region_add_coalescing(MemoryRegion *mr, | |
a8170e5e | 1298 | hwaddr offset, |
093bc2cd AK |
1299 | uint64_t size) |
1300 | { | |
7267c094 | 1301 | CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr)); |
093bc2cd | 1302 | |
08dafab4 | 1303 | cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size)); |
093bc2cd AK |
1304 | QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link); |
1305 | memory_region_update_coalesced_range(mr); | |
d410515e | 1306 | memory_region_set_flush_coalesced(mr); |
093bc2cd AK |
1307 | } |
1308 | ||
1309 | void memory_region_clear_coalescing(MemoryRegion *mr) | |
1310 | { | |
1311 | CoalescedMemoryRange *cmr; | |
1312 | ||
d410515e JK |
1313 | qemu_flush_coalesced_mmio_buffer(); |
1314 | mr->flush_coalesced_mmio = false; | |
1315 | ||
093bc2cd AK |
1316 | while (!QTAILQ_EMPTY(&mr->coalesced)) { |
1317 | cmr = QTAILQ_FIRST(&mr->coalesced); | |
1318 | QTAILQ_REMOVE(&mr->coalesced, cmr, link); | |
7267c094 | 1319 | g_free(cmr); |
093bc2cd AK |
1320 | } |
1321 | memory_region_update_coalesced_range(mr); | |
1322 | } | |
1323 | ||
d410515e JK |
1324 | void memory_region_set_flush_coalesced(MemoryRegion *mr) |
1325 | { | |
1326 | mr->flush_coalesced_mmio = true; | |
1327 | } | |
1328 | ||
1329 | void memory_region_clear_flush_coalesced(MemoryRegion *mr) | |
1330 | { | |
1331 | qemu_flush_coalesced_mmio_buffer(); | |
1332 | if (QTAILQ_EMPTY(&mr->coalesced)) { | |
1333 | mr->flush_coalesced_mmio = false; | |
1334 | } | |
1335 | } | |
1336 | ||
3e9d69e7 | 1337 | void memory_region_add_eventfd(MemoryRegion *mr, |
a8170e5e | 1338 | hwaddr addr, |
3e9d69e7 AK |
1339 | unsigned size, |
1340 | bool match_data, | |
1341 | uint64_t data, | |
753d5e14 | 1342 | EventNotifier *e) |
3e9d69e7 AK |
1343 | { |
1344 | MemoryRegionIoeventfd mrfd = { | |
08dafab4 AK |
1345 | .addr.start = int128_make64(addr), |
1346 | .addr.size = int128_make64(size), | |
3e9d69e7 AK |
1347 | .match_data = match_data, |
1348 | .data = data, | |
753d5e14 | 1349 | .e = e, |
3e9d69e7 AK |
1350 | }; |
1351 | unsigned i; | |
1352 | ||
28f362be | 1353 | adjust_endianness(mr, &mrfd.data, size); |
59023ef4 | 1354 | memory_region_transaction_begin(); |
3e9d69e7 AK |
1355 | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
1356 | if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) { | |
1357 | break; | |
1358 | } | |
1359 | } | |
1360 | ++mr->ioeventfd_nb; | |
7267c094 | 1361 | mr->ioeventfds = g_realloc(mr->ioeventfds, |
3e9d69e7 AK |
1362 | sizeof(*mr->ioeventfds) * mr->ioeventfd_nb); |
1363 | memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i], | |
1364 | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i)); | |
1365 | mr->ioeventfds[i] = mrfd; | |
22bde714 | 1366 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1367 | memory_region_transaction_commit(); |
3e9d69e7 AK |
1368 | } |
1369 | ||
1370 | void memory_region_del_eventfd(MemoryRegion *mr, | |
a8170e5e | 1371 | hwaddr addr, |
3e9d69e7 AK |
1372 | unsigned size, |
1373 | bool match_data, | |
1374 | uint64_t data, | |
753d5e14 | 1375 | EventNotifier *e) |
3e9d69e7 AK |
1376 | { |
1377 | MemoryRegionIoeventfd mrfd = { | |
08dafab4 AK |
1378 | .addr.start = int128_make64(addr), |
1379 | .addr.size = int128_make64(size), | |
3e9d69e7 AK |
1380 | .match_data = match_data, |
1381 | .data = data, | |
753d5e14 | 1382 | .e = e, |
3e9d69e7 AK |
1383 | }; |
1384 | unsigned i; | |
1385 | ||
28f362be | 1386 | adjust_endianness(mr, &mrfd.data, size); |
59023ef4 | 1387 | memory_region_transaction_begin(); |
3e9d69e7 AK |
1388 | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
1389 | if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) { | |
1390 | break; | |
1391 | } | |
1392 | } | |
1393 | assert(i != mr->ioeventfd_nb); | |
1394 | memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1], | |
1395 | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1))); | |
1396 | --mr->ioeventfd_nb; | |
7267c094 | 1397 | mr->ioeventfds = g_realloc(mr->ioeventfds, |
3e9d69e7 | 1398 | sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1); |
22bde714 | 1399 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1400 | memory_region_transaction_commit(); |
3e9d69e7 AK |
1401 | } |
1402 | ||
093bc2cd | 1403 | static void memory_region_add_subregion_common(MemoryRegion *mr, |
a8170e5e | 1404 | hwaddr offset, |
093bc2cd AK |
1405 | MemoryRegion *subregion) |
1406 | { | |
1407 | MemoryRegion *other; | |
1408 | ||
59023ef4 JK |
1409 | memory_region_transaction_begin(); |
1410 | ||
093bc2cd | 1411 | assert(!subregion->parent); |
dfde4e6e | 1412 | memory_region_ref(subregion); |
093bc2cd AK |
1413 | subregion->parent = mr; |
1414 | subregion->addr = offset; | |
1415 | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { | |
1416 | if (subregion->may_overlap || other->may_overlap) { | |
1417 | continue; | |
1418 | } | |
2c7cfd65 | 1419 | if (int128_ge(int128_make64(offset), |
08dafab4 AK |
1420 | int128_add(int128_make64(other->addr), other->size)) |
1421 | || int128_le(int128_add(int128_make64(offset), subregion->size), | |
1422 | int128_make64(other->addr))) { | |
093bc2cd AK |
1423 | continue; |
1424 | } | |
a5e1cbc8 | 1425 | #if 0 |
860329b2 MW |
1426 | printf("warning: subregion collision %llx/%llx (%s) " |
1427 | "vs %llx/%llx (%s)\n", | |
093bc2cd | 1428 | (unsigned long long)offset, |
08dafab4 | 1429 | (unsigned long long)int128_get64(subregion->size), |
860329b2 MW |
1430 | subregion->name, |
1431 | (unsigned long long)other->addr, | |
08dafab4 | 1432 | (unsigned long long)int128_get64(other->size), |
860329b2 | 1433 | other->name); |
a5e1cbc8 | 1434 | #endif |
093bc2cd AK |
1435 | } |
1436 | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { | |
1437 | if (subregion->priority >= other->priority) { | |
1438 | QTAILQ_INSERT_BEFORE(other, subregion, subregions_link); | |
1439 | goto done; | |
1440 | } | |
1441 | } | |
1442 | QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); | |
1443 | done: | |
22bde714 | 1444 | memory_region_update_pending |= mr->enabled && subregion->enabled; |
59023ef4 | 1445 | memory_region_transaction_commit(); |
093bc2cd AK |
1446 | } |
1447 | ||
1448 | ||
1449 | void memory_region_add_subregion(MemoryRegion *mr, | |
a8170e5e | 1450 | hwaddr offset, |
093bc2cd AK |
1451 | MemoryRegion *subregion) |
1452 | { | |
1453 | subregion->may_overlap = false; | |
1454 | subregion->priority = 0; | |
1455 | memory_region_add_subregion_common(mr, offset, subregion); | |
1456 | } | |
1457 | ||
1458 | void memory_region_add_subregion_overlap(MemoryRegion *mr, | |
a8170e5e | 1459 | hwaddr offset, |
093bc2cd AK |
1460 | MemoryRegion *subregion, |
1461 | unsigned priority) | |
1462 | { | |
1463 | subregion->may_overlap = true; | |
1464 | subregion->priority = priority; | |
1465 | memory_region_add_subregion_common(mr, offset, subregion); | |
1466 | } | |
1467 | ||
1468 | void memory_region_del_subregion(MemoryRegion *mr, | |
1469 | MemoryRegion *subregion) | |
1470 | { | |
59023ef4 | 1471 | memory_region_transaction_begin(); |
093bc2cd AK |
1472 | assert(subregion->parent == mr); |
1473 | subregion->parent = NULL; | |
1474 | QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); | |
dfde4e6e | 1475 | memory_region_unref(subregion); |
22bde714 | 1476 | memory_region_update_pending |= mr->enabled && subregion->enabled; |
59023ef4 | 1477 | memory_region_transaction_commit(); |
6bba19ba AK |
1478 | } |
1479 | ||
1480 | void memory_region_set_enabled(MemoryRegion *mr, bool enabled) | |
1481 | { | |
1482 | if (enabled == mr->enabled) { | |
1483 | return; | |
1484 | } | |
59023ef4 | 1485 | memory_region_transaction_begin(); |
6bba19ba | 1486 | mr->enabled = enabled; |
22bde714 | 1487 | memory_region_update_pending = true; |
59023ef4 | 1488 | memory_region_transaction_commit(); |
093bc2cd | 1489 | } |
1c0ffa58 | 1490 | |
a8170e5e | 1491 | void memory_region_set_address(MemoryRegion *mr, hwaddr addr) |
2282e1af AK |
1492 | { |
1493 | MemoryRegion *parent = mr->parent; | |
1494 | unsigned priority = mr->priority; | |
1495 | bool may_overlap = mr->may_overlap; | |
1496 | ||
1497 | if (addr == mr->addr || !parent) { | |
1498 | mr->addr = addr; | |
1499 | return; | |
1500 | } | |
1501 | ||
1502 | memory_region_transaction_begin(); | |
dfde4e6e | 1503 | memory_region_ref(mr); |
2282e1af AK |
1504 | memory_region_del_subregion(parent, mr); |
1505 | if (may_overlap) { | |
1506 | memory_region_add_subregion_overlap(parent, addr, mr, priority); | |
1507 | } else { | |
1508 | memory_region_add_subregion(parent, addr, mr); | |
1509 | } | |
dfde4e6e | 1510 | memory_region_unref(mr); |
2282e1af AK |
1511 | memory_region_transaction_commit(); |
1512 | } | |
1513 | ||
a8170e5e | 1514 | void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset) |
4703359e | 1515 | { |
4703359e | 1516 | assert(mr->alias); |
4703359e | 1517 | |
59023ef4 | 1518 | if (offset == mr->alias_offset) { |
4703359e AK |
1519 | return; |
1520 | } | |
1521 | ||
59023ef4 JK |
1522 | memory_region_transaction_begin(); |
1523 | mr->alias_offset = offset; | |
22bde714 | 1524 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1525 | memory_region_transaction_commit(); |
4703359e AK |
1526 | } |
1527 | ||
e34911c4 AK |
1528 | ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr) |
1529 | { | |
e34911c4 AK |
1530 | return mr->ram_addr; |
1531 | } | |
1532 | ||
e2177955 AK |
1533 | static int cmp_flatrange_addr(const void *addr_, const void *fr_) |
1534 | { | |
1535 | const AddrRange *addr = addr_; | |
1536 | const FlatRange *fr = fr_; | |
1537 | ||
1538 | if (int128_le(addrrange_end(*addr), fr->addr.start)) { | |
1539 | return -1; | |
1540 | } else if (int128_ge(addr->start, addrrange_end(fr->addr))) { | |
1541 | return 1; | |
1542 | } | |
1543 | return 0; | |
1544 | } | |
1545 | ||
99e86347 | 1546 | static FlatRange *flatview_lookup(FlatView *view, AddrRange addr) |
e2177955 | 1547 | { |
99e86347 | 1548 | return bsearch(&addr, view->ranges, view->nr, |
e2177955 AK |
1549 | sizeof(FlatRange), cmp_flatrange_addr); |
1550 | } | |
1551 | ||
3ce10901 PB |
1552 | bool memory_region_present(MemoryRegion *parent, hwaddr addr) |
1553 | { | |
1554 | MemoryRegion *mr = memory_region_find(parent, addr, 1).mr; | |
1555 | if (!mr) { | |
1556 | return false; | |
1557 | } | |
dfde4e6e | 1558 | memory_region_unref(mr); |
3ce10901 PB |
1559 | return true; |
1560 | } | |
1561 | ||
73034e9e | 1562 | MemoryRegionSection memory_region_find(MemoryRegion *mr, |
a8170e5e | 1563 | hwaddr addr, uint64_t size) |
e2177955 | 1564 | { |
052e87b0 | 1565 | MemoryRegionSection ret = { .mr = NULL }; |
73034e9e PB |
1566 | MemoryRegion *root; |
1567 | AddressSpace *as; | |
1568 | AddrRange range; | |
99e86347 | 1569 | FlatView *view; |
73034e9e PB |
1570 | FlatRange *fr; |
1571 | ||
1572 | addr += mr->addr; | |
1573 | for (root = mr; root->parent; ) { | |
1574 | root = root->parent; | |
1575 | addr += root->addr; | |
1576 | } | |
e2177955 | 1577 | |
73034e9e PB |
1578 | as = memory_region_to_address_space(root); |
1579 | range = addrrange_make(int128_make64(addr), int128_make64(size)); | |
99e86347 | 1580 | |
856d7245 | 1581 | view = address_space_get_flatview(as); |
99e86347 | 1582 | fr = flatview_lookup(view, range); |
e2177955 AK |
1583 | if (!fr) { |
1584 | return ret; | |
1585 | } | |
1586 | ||
99e86347 | 1587 | while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) { |
e2177955 AK |
1588 | --fr; |
1589 | } | |
1590 | ||
1591 | ret.mr = fr->mr; | |
73034e9e | 1592 | ret.address_space = as; |
e2177955 AK |
1593 | range = addrrange_intersection(range, fr->addr); |
1594 | ret.offset_within_region = fr->offset_in_region; | |
1595 | ret.offset_within_region += int128_get64(int128_sub(range.start, | |
1596 | fr->addr.start)); | |
052e87b0 | 1597 | ret.size = range.size; |
e2177955 | 1598 | ret.offset_within_address_space = int128_get64(range.start); |
7a8499e8 | 1599 | ret.readonly = fr->readonly; |
dfde4e6e PB |
1600 | memory_region_ref(ret.mr); |
1601 | ||
856d7245 | 1602 | flatview_unref(view); |
e2177955 AK |
1603 | return ret; |
1604 | } | |
1605 | ||
1d671369 | 1606 | void address_space_sync_dirty_bitmap(AddressSpace *as) |
86e775c6 | 1607 | { |
99e86347 | 1608 | FlatView *view; |
7664e80c AK |
1609 | FlatRange *fr; |
1610 | ||
856d7245 | 1611 | view = address_space_get_flatview(as); |
99e86347 | 1612 | FOR_EACH_FLAT_RANGE(fr, view) { |
72e22d2f | 1613 | MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync); |
7664e80c | 1614 | } |
856d7245 | 1615 | flatview_unref(view); |
7664e80c AK |
1616 | } |
1617 | ||
1618 | void memory_global_dirty_log_start(void) | |
1619 | { | |
7664e80c | 1620 | global_dirty_log = true; |
7376e582 | 1621 | MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); |
7664e80c AK |
1622 | } |
1623 | ||
1624 | void memory_global_dirty_log_stop(void) | |
1625 | { | |
7664e80c | 1626 | global_dirty_log = false; |
7376e582 | 1627 | MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); |
7664e80c AK |
1628 | } |
1629 | ||
1630 | static void listener_add_address_space(MemoryListener *listener, | |
1631 | AddressSpace *as) | |
1632 | { | |
99e86347 | 1633 | FlatView *view; |
7664e80c AK |
1634 | FlatRange *fr; |
1635 | ||
221b3a3f | 1636 | if (listener->address_space_filter |
f6790af6 | 1637 | && listener->address_space_filter != as) { |
221b3a3f JG |
1638 | return; |
1639 | } | |
1640 | ||
7664e80c | 1641 | if (global_dirty_log) { |
975aefe0 AK |
1642 | if (listener->log_global_start) { |
1643 | listener->log_global_start(listener); | |
1644 | } | |
7664e80c | 1645 | } |
975aefe0 | 1646 | |
856d7245 | 1647 | view = address_space_get_flatview(as); |
99e86347 | 1648 | FOR_EACH_FLAT_RANGE(fr, view) { |
7664e80c AK |
1649 | MemoryRegionSection section = { |
1650 | .mr = fr->mr, | |
f6790af6 | 1651 | .address_space = as, |
7664e80c | 1652 | .offset_within_region = fr->offset_in_region, |
052e87b0 | 1653 | .size = fr->addr.size, |
7664e80c | 1654 | .offset_within_address_space = int128_get64(fr->addr.start), |
7a8499e8 | 1655 | .readonly = fr->readonly, |
7664e80c | 1656 | }; |
975aefe0 AK |
1657 | if (listener->region_add) { |
1658 | listener->region_add(listener, §ion); | |
1659 | } | |
7664e80c | 1660 | } |
856d7245 | 1661 | flatview_unref(view); |
7664e80c AK |
1662 | } |
1663 | ||
f6790af6 | 1664 | void memory_listener_register(MemoryListener *listener, AddressSpace *filter) |
7664e80c | 1665 | { |
72e22d2f | 1666 | MemoryListener *other = NULL; |
0d673e36 | 1667 | AddressSpace *as; |
72e22d2f | 1668 | |
7376e582 | 1669 | listener->address_space_filter = filter; |
72e22d2f AK |
1670 | if (QTAILQ_EMPTY(&memory_listeners) |
1671 | || listener->priority >= QTAILQ_LAST(&memory_listeners, | |
1672 | memory_listeners)->priority) { | |
1673 | QTAILQ_INSERT_TAIL(&memory_listeners, listener, link); | |
1674 | } else { | |
1675 | QTAILQ_FOREACH(other, &memory_listeners, link) { | |
1676 | if (listener->priority < other->priority) { | |
1677 | break; | |
1678 | } | |
1679 | } | |
1680 | QTAILQ_INSERT_BEFORE(other, listener, link); | |
1681 | } | |
0d673e36 AK |
1682 | |
1683 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
1684 | listener_add_address_space(listener, as); | |
1685 | } | |
7664e80c AK |
1686 | } |
1687 | ||
1688 | void memory_listener_unregister(MemoryListener *listener) | |
1689 | { | |
72e22d2f | 1690 | QTAILQ_REMOVE(&memory_listeners, listener, link); |
86e775c6 | 1691 | } |
e2177955 | 1692 | |
7dca8043 | 1693 | void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name) |
1c0ffa58 | 1694 | { |
856d7245 PB |
1695 | if (QTAILQ_EMPTY(&address_spaces)) { |
1696 | memory_init(); | |
1697 | } | |
1698 | ||
59023ef4 | 1699 | memory_region_transaction_begin(); |
8786db7c AK |
1700 | as->root = root; |
1701 | as->current_map = g_new(FlatView, 1); | |
1702 | flatview_init(as->current_map); | |
4c19eb72 AK |
1703 | as->ioeventfd_nb = 0; |
1704 | as->ioeventfds = NULL; | |
0d673e36 | 1705 | QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link); |
7dca8043 | 1706 | as->name = g_strdup(name ? name : "anonymous"); |
ac1970fb | 1707 | address_space_init_dispatch(as); |
f43793c7 PB |
1708 | memory_region_update_pending |= root->enabled; |
1709 | memory_region_transaction_commit(); | |
1c0ffa58 | 1710 | } |
658b2224 | 1711 | |
83f3c251 AK |
1712 | void address_space_destroy(AddressSpace *as) |
1713 | { | |
1714 | /* Flush out anything from MemoryListeners listening in on this */ | |
1715 | memory_region_transaction_begin(); | |
1716 | as->root = NULL; | |
1717 | memory_region_transaction_commit(); | |
1718 | QTAILQ_REMOVE(&address_spaces, as, address_spaces_link); | |
1719 | address_space_destroy_dispatch(as); | |
856d7245 | 1720 | flatview_unref(as->current_map); |
7dca8043 | 1721 | g_free(as->name); |
4c19eb72 | 1722 | g_free(as->ioeventfds); |
83f3c251 AK |
1723 | } |
1724 | ||
791af8c8 | 1725 | bool io_mem_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, unsigned size) |
acbbec5d | 1726 | { |
791af8c8 | 1727 | return memory_region_dispatch_read(mr, addr, pval, size); |
acbbec5d AK |
1728 | } |
1729 | ||
791af8c8 | 1730 | bool io_mem_write(MemoryRegion *mr, hwaddr addr, |
acbbec5d AK |
1731 | uint64_t val, unsigned size) |
1732 | { | |
791af8c8 | 1733 | return memory_region_dispatch_write(mr, addr, val, size); |
acbbec5d AK |
1734 | } |
1735 | ||
314e2987 BS |
1736 | typedef struct MemoryRegionList MemoryRegionList; |
1737 | ||
1738 | struct MemoryRegionList { | |
1739 | const MemoryRegion *mr; | |
1740 | bool printed; | |
1741 | QTAILQ_ENTRY(MemoryRegionList) queue; | |
1742 | }; | |
1743 | ||
1744 | typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead; | |
1745 | ||
1746 | static void mtree_print_mr(fprintf_function mon_printf, void *f, | |
1747 | const MemoryRegion *mr, unsigned int level, | |
a8170e5e | 1748 | hwaddr base, |
9479c57a | 1749 | MemoryRegionListHead *alias_print_queue) |
314e2987 | 1750 | { |
9479c57a JK |
1751 | MemoryRegionList *new_ml, *ml, *next_ml; |
1752 | MemoryRegionListHead submr_print_queue; | |
314e2987 BS |
1753 | const MemoryRegion *submr; |
1754 | unsigned int i; | |
1755 | ||
7ea692b2 | 1756 | if (!mr || !mr->enabled) { |
314e2987 BS |
1757 | return; |
1758 | } | |
1759 | ||
1760 | for (i = 0; i < level; i++) { | |
1761 | mon_printf(f, " "); | |
1762 | } | |
1763 | ||
1764 | if (mr->alias) { | |
1765 | MemoryRegionList *ml; | |
1766 | bool found = false; | |
1767 | ||
1768 | /* check if the alias is already in the queue */ | |
9479c57a | 1769 | QTAILQ_FOREACH(ml, alias_print_queue, queue) { |
314e2987 BS |
1770 | if (ml->mr == mr->alias && !ml->printed) { |
1771 | found = true; | |
1772 | } | |
1773 | } | |
1774 | ||
1775 | if (!found) { | |
1776 | ml = g_new(MemoryRegionList, 1); | |
1777 | ml->mr = mr->alias; | |
1778 | ml->printed = false; | |
9479c57a | 1779 | QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue); |
314e2987 | 1780 | } |
4896d74b JK |
1781 | mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx |
1782 | " (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx | |
1783 | "-" TARGET_FMT_plx "\n", | |
314e2987 | 1784 | base + mr->addr, |
08dafab4 | 1785 | base + mr->addr |
fd1d9926 AW |
1786 | + (int128_nz(mr->size) ? |
1787 | (hwaddr)int128_get64(int128_sub(mr->size, | |
1788 | int128_one())) : 0), | |
4b474ba7 | 1789 | mr->priority, |
5f9a5ea1 JK |
1790 | mr->romd_mode ? 'R' : '-', |
1791 | !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W' | |
1792 | : '-', | |
314e2987 BS |
1793 | mr->name, |
1794 | mr->alias->name, | |
1795 | mr->alias_offset, | |
08dafab4 | 1796 | mr->alias_offset |
a8170e5e | 1797 | + (hwaddr)int128_get64(mr->size) - 1); |
314e2987 | 1798 | } else { |
4896d74b JK |
1799 | mon_printf(f, |
1800 | TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n", | |
314e2987 | 1801 | base + mr->addr, |
08dafab4 | 1802 | base + mr->addr |
fd1d9926 AW |
1803 | + (int128_nz(mr->size) ? |
1804 | (hwaddr)int128_get64(int128_sub(mr->size, | |
1805 | int128_one())) : 0), | |
4b474ba7 | 1806 | mr->priority, |
5f9a5ea1 JK |
1807 | mr->romd_mode ? 'R' : '-', |
1808 | !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W' | |
1809 | : '-', | |
314e2987 BS |
1810 | mr->name); |
1811 | } | |
9479c57a JK |
1812 | |
1813 | QTAILQ_INIT(&submr_print_queue); | |
1814 | ||
314e2987 | 1815 | QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) { |
9479c57a JK |
1816 | new_ml = g_new(MemoryRegionList, 1); |
1817 | new_ml->mr = submr; | |
1818 | QTAILQ_FOREACH(ml, &submr_print_queue, queue) { | |
1819 | if (new_ml->mr->addr < ml->mr->addr || | |
1820 | (new_ml->mr->addr == ml->mr->addr && | |
1821 | new_ml->mr->priority > ml->mr->priority)) { | |
1822 | QTAILQ_INSERT_BEFORE(ml, new_ml, queue); | |
1823 | new_ml = NULL; | |
1824 | break; | |
1825 | } | |
1826 | } | |
1827 | if (new_ml) { | |
1828 | QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue); | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | QTAILQ_FOREACH(ml, &submr_print_queue, queue) { | |
1833 | mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr, | |
1834 | alias_print_queue); | |
1835 | } | |
1836 | ||
88365e47 | 1837 | QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) { |
9479c57a | 1838 | g_free(ml); |
314e2987 BS |
1839 | } |
1840 | } | |
1841 | ||
1842 | void mtree_info(fprintf_function mon_printf, void *f) | |
1843 | { | |
1844 | MemoryRegionListHead ml_head; | |
1845 | MemoryRegionList *ml, *ml2; | |
0d673e36 | 1846 | AddressSpace *as; |
314e2987 BS |
1847 | |
1848 | QTAILQ_INIT(&ml_head); | |
1849 | ||
0d673e36 | 1850 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
0d673e36 AK |
1851 | mon_printf(f, "%s\n", as->name); |
1852 | mtree_print_mr(mon_printf, f, as->root, 0, 0, &ml_head); | |
b9f9be88 BS |
1853 | } |
1854 | ||
1855 | mon_printf(f, "aliases\n"); | |
314e2987 BS |
1856 | /* print aliased regions */ |
1857 | QTAILQ_FOREACH(ml, &ml_head, queue) { | |
1858 | if (!ml->printed) { | |
1859 | mon_printf(f, "%s\n", ml->mr->name); | |
1860 | mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head); | |
1861 | } | |
1862 | } | |
1863 | ||
1864 | QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) { | |
88365e47 | 1865 | g_free(ml); |
314e2987 | 1866 | } |
314e2987 | 1867 | } |