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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 | ||
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" | |
22 | #include "exec/ioport.h" | |
409ddd01 | 23 | #include "qapi/visitor.h" |
1de7afc9 | 24 | #include "qemu/bitops.h" |
8c56c1a5 | 25 | #include "qemu/error-report.h" |
2c9b15ca | 26 | #include "qom/object.h" |
0ab8ed18 | 27 | #include "trace-root.h" |
093bc2cd | 28 | |
022c62cb | 29 | #include "exec/memory-internal.h" |
220c3ebd | 30 | #include "exec/ram_addr.h" |
8c56c1a5 | 31 | #include "sysemu/kvm.h" |
e1c57ab8 | 32 | #include "sysemu/sysemu.h" |
c9356746 FK |
33 | #include "hw/misc/mmio_interface.h" |
34 | #include "hw/qdev-properties.h" | |
b08199c6 | 35 | #include "migration/vmstate.h" |
67d95c15 | 36 | |
d197063f PB |
37 | //#define DEBUG_UNASSIGNED |
38 | ||
22bde714 JK |
39 | static unsigned memory_region_transaction_depth; |
40 | static bool memory_region_update_pending; | |
4dc56152 | 41 | static bool ioeventfd_update_pending; |
7664e80c AK |
42 | static bool global_dirty_log = false; |
43 | ||
72e22d2f AK |
44 | static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners |
45 | = QTAILQ_HEAD_INITIALIZER(memory_listeners); | |
4ef4db86 | 46 | |
0d673e36 AK |
47 | static QTAILQ_HEAD(, AddressSpace) address_spaces |
48 | = QTAILQ_HEAD_INITIALIZER(address_spaces); | |
49 | ||
093bc2cd AK |
50 | typedef struct AddrRange AddrRange; |
51 | ||
8417cebf | 52 | /* |
c9cdaa3a | 53 | * Note that signed integers are needed for negative offsetting in aliases |
8417cebf AK |
54 | * (large MemoryRegion::alias_offset). |
55 | */ | |
093bc2cd | 56 | struct AddrRange { |
08dafab4 AK |
57 | Int128 start; |
58 | Int128 size; | |
093bc2cd AK |
59 | }; |
60 | ||
08dafab4 | 61 | static AddrRange addrrange_make(Int128 start, Int128 size) |
093bc2cd AK |
62 | { |
63 | return (AddrRange) { start, size }; | |
64 | } | |
65 | ||
66 | static bool addrrange_equal(AddrRange r1, AddrRange r2) | |
67 | { | |
08dafab4 | 68 | return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size); |
093bc2cd AK |
69 | } |
70 | ||
08dafab4 | 71 | static Int128 addrrange_end(AddrRange r) |
093bc2cd | 72 | { |
08dafab4 | 73 | return int128_add(r.start, r.size); |
093bc2cd AK |
74 | } |
75 | ||
08dafab4 | 76 | static AddrRange addrrange_shift(AddrRange range, Int128 delta) |
093bc2cd | 77 | { |
08dafab4 | 78 | int128_addto(&range.start, delta); |
093bc2cd AK |
79 | return range; |
80 | } | |
81 | ||
08dafab4 AK |
82 | static bool addrrange_contains(AddrRange range, Int128 addr) |
83 | { | |
84 | return int128_ge(addr, range.start) | |
85 | && int128_lt(addr, addrrange_end(range)); | |
86 | } | |
87 | ||
093bc2cd AK |
88 | static bool addrrange_intersects(AddrRange r1, AddrRange r2) |
89 | { | |
08dafab4 AK |
90 | return addrrange_contains(r1, r2.start) |
91 | || addrrange_contains(r2, r1.start); | |
093bc2cd AK |
92 | } |
93 | ||
94 | static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2) | |
95 | { | |
08dafab4 AK |
96 | Int128 start = int128_max(r1.start, r2.start); |
97 | Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2)); | |
98 | return addrrange_make(start, int128_sub(end, start)); | |
093bc2cd AK |
99 | } |
100 | ||
0e0d36b4 AK |
101 | enum ListenerDirection { Forward, Reverse }; |
102 | ||
7376e582 | 103 | #define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \ |
0e0d36b4 AK |
104 | do { \ |
105 | MemoryListener *_listener; \ | |
106 | \ | |
107 | switch (_direction) { \ | |
108 | case Forward: \ | |
109 | QTAILQ_FOREACH(_listener, &memory_listeners, link) { \ | |
975aefe0 AK |
110 | if (_listener->_callback) { \ |
111 | _listener->_callback(_listener, ##_args); \ | |
112 | } \ | |
0e0d36b4 AK |
113 | } \ |
114 | break; \ | |
115 | case Reverse: \ | |
116 | QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \ | |
117 | memory_listeners, link) { \ | |
975aefe0 AK |
118 | if (_listener->_callback) { \ |
119 | _listener->_callback(_listener, ##_args); \ | |
120 | } \ | |
0e0d36b4 AK |
121 | } \ |
122 | break; \ | |
123 | default: \ | |
124 | abort(); \ | |
125 | } \ | |
126 | } while (0) | |
127 | ||
9a54635d | 128 | #define MEMORY_LISTENER_CALL(_as, _callback, _direction, _section, _args...) \ |
7376e582 AK |
129 | do { \ |
130 | MemoryListener *_listener; \ | |
9a54635d | 131 | struct memory_listeners_as *list = &(_as)->listeners; \ |
7376e582 AK |
132 | \ |
133 | switch (_direction) { \ | |
134 | case Forward: \ | |
9a54635d PB |
135 | QTAILQ_FOREACH(_listener, list, link_as) { \ |
136 | if (_listener->_callback) { \ | |
7376e582 AK |
137 | _listener->_callback(_listener, _section, ##_args); \ |
138 | } \ | |
139 | } \ | |
140 | break; \ | |
141 | case Reverse: \ | |
9a54635d PB |
142 | QTAILQ_FOREACH_REVERSE(_listener, list, memory_listeners_as, \ |
143 | link_as) { \ | |
144 | if (_listener->_callback) { \ | |
7376e582 AK |
145 | _listener->_callback(_listener, _section, ##_args); \ |
146 | } \ | |
147 | } \ | |
148 | break; \ | |
149 | default: \ | |
150 | abort(); \ | |
151 | } \ | |
152 | } while (0) | |
153 | ||
dfde4e6e | 154 | /* No need to ref/unref .mr, the FlatRange keeps it alive. */ |
b2dfd71c | 155 | #define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback, _args...) \ |
9c1f8f44 | 156 | do { \ |
16620684 AK |
157 | MemoryRegionSection mrs = section_from_flat_range(fr, \ |
158 | address_space_to_flatview(as)); \ | |
9a54635d | 159 | MEMORY_LISTENER_CALL(as, callback, dir, &mrs, ##_args); \ |
9c1f8f44 | 160 | } while(0) |
0e0d36b4 | 161 | |
093bc2cd AK |
162 | struct CoalescedMemoryRange { |
163 | AddrRange addr; | |
164 | QTAILQ_ENTRY(CoalescedMemoryRange) link; | |
165 | }; | |
166 | ||
3e9d69e7 AK |
167 | struct MemoryRegionIoeventfd { |
168 | AddrRange addr; | |
169 | bool match_data; | |
170 | uint64_t data; | |
753d5e14 | 171 | EventNotifier *e; |
3e9d69e7 AK |
172 | }; |
173 | ||
174 | static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a, | |
175 | MemoryRegionIoeventfd b) | |
176 | { | |
08dafab4 | 177 | if (int128_lt(a.addr.start, b.addr.start)) { |
3e9d69e7 | 178 | return true; |
08dafab4 | 179 | } else if (int128_gt(a.addr.start, b.addr.start)) { |
3e9d69e7 | 180 | return false; |
08dafab4 | 181 | } else if (int128_lt(a.addr.size, b.addr.size)) { |
3e9d69e7 | 182 | return true; |
08dafab4 | 183 | } else if (int128_gt(a.addr.size, b.addr.size)) { |
3e9d69e7 AK |
184 | return false; |
185 | } else if (a.match_data < b.match_data) { | |
186 | return true; | |
187 | } else if (a.match_data > b.match_data) { | |
188 | return false; | |
189 | } else if (a.match_data) { | |
190 | if (a.data < b.data) { | |
191 | return true; | |
192 | } else if (a.data > b.data) { | |
193 | return false; | |
194 | } | |
195 | } | |
753d5e14 | 196 | if (a.e < b.e) { |
3e9d69e7 | 197 | return true; |
753d5e14 | 198 | } else if (a.e > b.e) { |
3e9d69e7 AK |
199 | return false; |
200 | } | |
201 | return false; | |
202 | } | |
203 | ||
204 | static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a, | |
205 | MemoryRegionIoeventfd b) | |
206 | { | |
207 | return !memory_region_ioeventfd_before(a, b) | |
208 | && !memory_region_ioeventfd_before(b, a); | |
209 | } | |
210 | ||
093bc2cd | 211 | typedef struct FlatRange FlatRange; |
093bc2cd AK |
212 | |
213 | /* Range of memory in the global map. Addresses are absolute. */ | |
214 | struct FlatRange { | |
215 | MemoryRegion *mr; | |
a8170e5e | 216 | hwaddr offset_in_region; |
093bc2cd | 217 | AddrRange addr; |
5a583347 | 218 | uint8_t dirty_log_mask; |
b138e654 | 219 | bool romd_mode; |
fb1cd6f9 | 220 | bool readonly; |
093bc2cd AK |
221 | }; |
222 | ||
223 | /* Flattened global view of current active memory hierarchy. Kept in sorted | |
224 | * order. | |
225 | */ | |
226 | struct FlatView { | |
374f2981 | 227 | struct rcu_head rcu; |
856d7245 | 228 | unsigned ref; |
093bc2cd AK |
229 | FlatRange *ranges; |
230 | unsigned nr; | |
231 | unsigned nr_allocated; | |
66a6df1d | 232 | struct AddressSpaceDispatch *dispatch; |
093bc2cd AK |
233 | }; |
234 | ||
cc31e6e7 AK |
235 | typedef struct AddressSpaceOps AddressSpaceOps; |
236 | ||
093bc2cd AK |
237 | #define FOR_EACH_FLAT_RANGE(var, view) \ |
238 | for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var) | |
239 | ||
9c1f8f44 | 240 | static inline MemoryRegionSection |
16620684 | 241 | section_from_flat_range(FlatRange *fr, FlatView *fv) |
9c1f8f44 PB |
242 | { |
243 | return (MemoryRegionSection) { | |
244 | .mr = fr->mr, | |
16620684 | 245 | .fv = fv, |
9c1f8f44 PB |
246 | .offset_within_region = fr->offset_in_region, |
247 | .size = fr->addr.size, | |
248 | .offset_within_address_space = int128_get64(fr->addr.start), | |
249 | .readonly = fr->readonly, | |
250 | }; | |
251 | } | |
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 |
b138e654 | 258 | && a->romd_mode == b->romd_mode |
fb1cd6f9 | 259 | && a->readonly == b->readonly; |
093bc2cd AK |
260 | } |
261 | ||
cc94cd6d | 262 | static FlatView *flatview_new(void) |
093bc2cd | 263 | { |
cc94cd6d AK |
264 | FlatView *view; |
265 | ||
266 | view = g_new0(FlatView, 1); | |
856d7245 | 267 | view->ref = 1; |
cc94cd6d AK |
268 | |
269 | return view; | |
093bc2cd AK |
270 | } |
271 | ||
272 | /* Insert a range into a given position. Caller is responsible for maintaining | |
273 | * sorting order. | |
274 | */ | |
275 | static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range) | |
276 | { | |
277 | if (view->nr == view->nr_allocated) { | |
278 | view->nr_allocated = MAX(2 * view->nr, 10); | |
7267c094 | 279 | view->ranges = g_realloc(view->ranges, |
093bc2cd AK |
280 | view->nr_allocated * sizeof(*view->ranges)); |
281 | } | |
282 | memmove(view->ranges + pos + 1, view->ranges + pos, | |
283 | (view->nr - pos) * sizeof(FlatRange)); | |
284 | view->ranges[pos] = *range; | |
dfde4e6e | 285 | memory_region_ref(range->mr); |
093bc2cd AK |
286 | ++view->nr; |
287 | } | |
288 | ||
289 | static void flatview_destroy(FlatView *view) | |
290 | { | |
dfde4e6e PB |
291 | int i; |
292 | ||
66a6df1d AK |
293 | if (view->dispatch) { |
294 | address_space_dispatch_free(view->dispatch); | |
295 | } | |
dfde4e6e PB |
296 | for (i = 0; i < view->nr; i++) { |
297 | memory_region_unref(view->ranges[i].mr); | |
298 | } | |
7267c094 | 299 | g_free(view->ranges); |
a9a0c06d | 300 | g_free(view); |
093bc2cd AK |
301 | } |
302 | ||
447b0d0b | 303 | static bool flatview_ref(FlatView *view) |
856d7245 | 304 | { |
447b0d0b | 305 | return atomic_fetch_inc_nonzero(&view->ref) > 0; |
856d7245 PB |
306 | } |
307 | ||
308 | static void flatview_unref(FlatView *view) | |
309 | { | |
310 | if (atomic_fetch_dec(&view->ref) == 1) { | |
66a6df1d | 311 | call_rcu(view, flatview_destroy, rcu); |
856d7245 PB |
312 | } |
313 | } | |
314 | ||
16620684 | 315 | FlatView *address_space_to_flatview(AddressSpace *as) |
66a6df1d AK |
316 | { |
317 | return atomic_rcu_read(&as->current_map); | |
318 | } | |
319 | ||
320 | AddressSpaceDispatch *flatview_to_dispatch(FlatView *fv) | |
321 | { | |
322 | return fv->dispatch; | |
323 | } | |
324 | ||
325 | AddressSpaceDispatch *address_space_to_dispatch(AddressSpace *as) | |
326 | { | |
327 | return flatview_to_dispatch(address_space_to_flatview(as)); | |
328 | } | |
329 | ||
3d8e6bf9 AK |
330 | static bool can_merge(FlatRange *r1, FlatRange *r2) |
331 | { | |
08dafab4 | 332 | return int128_eq(addrrange_end(r1->addr), r2->addr.start) |
3d8e6bf9 | 333 | && r1->mr == r2->mr |
08dafab4 AK |
334 | && int128_eq(int128_add(int128_make64(r1->offset_in_region), |
335 | r1->addr.size), | |
336 | int128_make64(r2->offset_in_region)) | |
d0a9b5bc | 337 | && r1->dirty_log_mask == r2->dirty_log_mask |
b138e654 | 338 | && r1->romd_mode == r2->romd_mode |
fb1cd6f9 | 339 | && r1->readonly == r2->readonly; |
3d8e6bf9 AK |
340 | } |
341 | ||
8508e024 | 342 | /* Attempt to simplify a view by merging adjacent ranges */ |
3d8e6bf9 AK |
343 | static void flatview_simplify(FlatView *view) |
344 | { | |
345 | unsigned i, j; | |
346 | ||
347 | i = 0; | |
348 | while (i < view->nr) { | |
349 | j = i + 1; | |
350 | while (j < view->nr | |
351 | && can_merge(&view->ranges[j-1], &view->ranges[j])) { | |
08dafab4 | 352 | int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size); |
3d8e6bf9 AK |
353 | ++j; |
354 | } | |
355 | ++i; | |
356 | memmove(&view->ranges[i], &view->ranges[j], | |
357 | (view->nr - j) * sizeof(view->ranges[j])); | |
358 | view->nr -= j - i; | |
359 | } | |
360 | } | |
361 | ||
e7342aa3 PB |
362 | static bool memory_region_big_endian(MemoryRegion *mr) |
363 | { | |
364 | #ifdef TARGET_WORDS_BIGENDIAN | |
365 | return mr->ops->endianness != DEVICE_LITTLE_ENDIAN; | |
366 | #else | |
367 | return mr->ops->endianness == DEVICE_BIG_ENDIAN; | |
368 | #endif | |
369 | } | |
370 | ||
e11ef3d1 PB |
371 | static bool memory_region_wrong_endianness(MemoryRegion *mr) |
372 | { | |
373 | #ifdef TARGET_WORDS_BIGENDIAN | |
374 | return mr->ops->endianness == DEVICE_LITTLE_ENDIAN; | |
375 | #else | |
376 | return mr->ops->endianness == DEVICE_BIG_ENDIAN; | |
377 | #endif | |
378 | } | |
379 | ||
380 | static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size) | |
381 | { | |
382 | if (memory_region_wrong_endianness(mr)) { | |
383 | switch (size) { | |
384 | case 1: | |
385 | break; | |
386 | case 2: | |
387 | *data = bswap16(*data); | |
388 | break; | |
389 | case 4: | |
390 | *data = bswap32(*data); | |
391 | break; | |
392 | case 8: | |
393 | *data = bswap64(*data); | |
394 | break; | |
395 | default: | |
396 | abort(); | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
4779dc1d HB |
401 | static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset) |
402 | { | |
403 | MemoryRegion *root; | |
404 | hwaddr abs_addr = offset; | |
405 | ||
406 | abs_addr += mr->addr; | |
407 | for (root = mr; root->container; ) { | |
408 | root = root->container; | |
409 | abs_addr += root->addr; | |
410 | } | |
411 | ||
412 | return abs_addr; | |
413 | } | |
414 | ||
5a68be94 HB |
415 | static int get_cpu_index(void) |
416 | { | |
417 | if (current_cpu) { | |
418 | return current_cpu->cpu_index; | |
419 | } | |
420 | return -1; | |
421 | } | |
422 | ||
cc05c43a PM |
423 | static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr, |
424 | hwaddr addr, | |
425 | uint64_t *value, | |
426 | unsigned size, | |
427 | unsigned shift, | |
428 | uint64_t mask, | |
429 | MemTxAttrs attrs) | |
430 | { | |
431 | uint64_t tmp; | |
432 | ||
433 | tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr); | |
23d92d68 | 434 | if (mr->subpage) { |
5a68be94 | 435 | trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
436 | } else if (mr == &io_mem_notdirty) { |
437 | /* Accesses to code which has previously been translated into a TB show | |
438 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
439 | * MemoryRegion. */ | |
440 | trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
441 | } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) { |
442 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 443 | trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 444 | } |
cc05c43a PM |
445 | *value |= (tmp & mask) << shift; |
446 | return MEMTX_OK; | |
447 | } | |
448 | ||
449 | static MemTxResult memory_region_read_accessor(MemoryRegion *mr, | |
ce5d2f33 PB |
450 | hwaddr addr, |
451 | uint64_t *value, | |
452 | unsigned size, | |
453 | unsigned shift, | |
cc05c43a PM |
454 | uint64_t mask, |
455 | MemTxAttrs attrs) | |
ce5d2f33 | 456 | { |
ce5d2f33 PB |
457 | uint64_t tmp; |
458 | ||
cc05c43a | 459 | tmp = mr->ops->read(mr->opaque, addr, size); |
23d92d68 | 460 | if (mr->subpage) { |
5a68be94 | 461 | trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
462 | } else if (mr == &io_mem_notdirty) { |
463 | /* Accesses to code which has previously been translated into a TB show | |
464 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
465 | * MemoryRegion. */ | |
466 | trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
467 | } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) { |
468 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 469 | trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 470 | } |
ce5d2f33 | 471 | *value |= (tmp & mask) << shift; |
cc05c43a | 472 | return MEMTX_OK; |
ce5d2f33 PB |
473 | } |
474 | ||
cc05c43a PM |
475 | static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr, |
476 | hwaddr addr, | |
477 | uint64_t *value, | |
478 | unsigned size, | |
479 | unsigned shift, | |
480 | uint64_t mask, | |
481 | MemTxAttrs attrs) | |
164a4dcd | 482 | { |
cc05c43a PM |
483 | uint64_t tmp = 0; |
484 | MemTxResult r; | |
164a4dcd | 485 | |
cc05c43a | 486 | r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs); |
23d92d68 | 487 | if (mr->subpage) { |
5a68be94 | 488 | trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
489 | } else if (mr == &io_mem_notdirty) { |
490 | /* Accesses to code which has previously been translated into a TB show | |
491 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
492 | * MemoryRegion. */ | |
493 | trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
494 | } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) { |
495 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 496 | trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 497 | } |
164a4dcd | 498 | *value |= (tmp & mask) << shift; |
cc05c43a | 499 | return r; |
164a4dcd AK |
500 | } |
501 | ||
cc05c43a PM |
502 | static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr, |
503 | hwaddr addr, | |
504 | uint64_t *value, | |
505 | unsigned size, | |
506 | unsigned shift, | |
507 | uint64_t mask, | |
508 | MemTxAttrs attrs) | |
ce5d2f33 | 509 | { |
ce5d2f33 PB |
510 | uint64_t tmp; |
511 | ||
512 | tmp = (*value >> shift) & mask; | |
23d92d68 | 513 | if (mr->subpage) { |
5a68be94 | 514 | trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
515 | } else if (mr == &io_mem_notdirty) { |
516 | /* Accesses to code which has previously been translated into a TB show | |
517 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
518 | * MemoryRegion. */ | |
519 | trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
520 | } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) { |
521 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 522 | trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 523 | } |
ce5d2f33 | 524 | mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp); |
cc05c43a | 525 | return MEMTX_OK; |
ce5d2f33 PB |
526 | } |
527 | ||
cc05c43a PM |
528 | static MemTxResult memory_region_write_accessor(MemoryRegion *mr, |
529 | hwaddr addr, | |
530 | uint64_t *value, | |
531 | unsigned size, | |
532 | unsigned shift, | |
533 | uint64_t mask, | |
534 | MemTxAttrs attrs) | |
164a4dcd | 535 | { |
164a4dcd AK |
536 | uint64_t tmp; |
537 | ||
538 | tmp = (*value >> shift) & mask; | |
23d92d68 | 539 | if (mr->subpage) { |
5a68be94 | 540 | trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
541 | } else if (mr == &io_mem_notdirty) { |
542 | /* Accesses to code which has previously been translated into a TB show | |
543 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
544 | * MemoryRegion. */ | |
545 | trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
546 | } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) { |
547 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 548 | trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 549 | } |
164a4dcd | 550 | mr->ops->write(mr->opaque, addr, tmp, size); |
cc05c43a | 551 | return MEMTX_OK; |
164a4dcd AK |
552 | } |
553 | ||
cc05c43a PM |
554 | static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr, |
555 | hwaddr addr, | |
556 | uint64_t *value, | |
557 | unsigned size, | |
558 | unsigned shift, | |
559 | uint64_t mask, | |
560 | MemTxAttrs attrs) | |
561 | { | |
562 | uint64_t tmp; | |
563 | ||
cc05c43a | 564 | tmp = (*value >> shift) & mask; |
23d92d68 | 565 | if (mr->subpage) { |
5a68be94 | 566 | trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
567 | } else if (mr == &io_mem_notdirty) { |
568 | /* Accesses to code which has previously been translated into a TB show | |
569 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
570 | * MemoryRegion. */ | |
571 | trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
572 | } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) { |
573 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 574 | trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 575 | } |
cc05c43a PM |
576 | return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs); |
577 | } | |
578 | ||
579 | static MemTxResult access_with_adjusted_size(hwaddr addr, | |
164a4dcd AK |
580 | uint64_t *value, |
581 | unsigned size, | |
582 | unsigned access_size_min, | |
583 | unsigned access_size_max, | |
05e015f7 KF |
584 | MemTxResult (*access_fn) |
585 | (MemoryRegion *mr, | |
586 | hwaddr addr, | |
587 | uint64_t *value, | |
588 | unsigned size, | |
589 | unsigned shift, | |
590 | uint64_t mask, | |
591 | MemTxAttrs attrs), | |
cc05c43a PM |
592 | MemoryRegion *mr, |
593 | MemTxAttrs attrs) | |
164a4dcd AK |
594 | { |
595 | uint64_t access_mask; | |
596 | unsigned access_size; | |
597 | unsigned i; | |
cc05c43a | 598 | MemTxResult r = MEMTX_OK; |
164a4dcd AK |
599 | |
600 | if (!access_size_min) { | |
601 | access_size_min = 1; | |
602 | } | |
603 | if (!access_size_max) { | |
604 | access_size_max = 4; | |
605 | } | |
ce5d2f33 PB |
606 | |
607 | /* FIXME: support unaligned access? */ | |
164a4dcd AK |
608 | access_size = MAX(MIN(size, access_size_max), access_size_min); |
609 | access_mask = -1ULL >> (64 - access_size * 8); | |
e7342aa3 PB |
610 | if (memory_region_big_endian(mr)) { |
611 | for (i = 0; i < size; i += access_size) { | |
05e015f7 | 612 | r |= access_fn(mr, addr + i, value, access_size, |
cc05c43a | 613 | (size - access_size - i) * 8, access_mask, attrs); |
e7342aa3 PB |
614 | } |
615 | } else { | |
616 | for (i = 0; i < size; i += access_size) { | |
05e015f7 | 617 | r |= access_fn(mr, addr + i, value, access_size, i * 8, |
cc05c43a | 618 | access_mask, attrs); |
e7342aa3 | 619 | } |
164a4dcd | 620 | } |
cc05c43a | 621 | return r; |
164a4dcd AK |
622 | } |
623 | ||
e2177955 AK |
624 | static AddressSpace *memory_region_to_address_space(MemoryRegion *mr) |
625 | { | |
0d673e36 AK |
626 | AddressSpace *as; |
627 | ||
feca4ac1 PB |
628 | while (mr->container) { |
629 | mr = mr->container; | |
e2177955 | 630 | } |
0d673e36 AK |
631 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
632 | if (mr == as->root) { | |
633 | return as; | |
634 | } | |
e2177955 | 635 | } |
eed2bacf | 636 | return NULL; |
e2177955 AK |
637 | } |
638 | ||
093bc2cd AK |
639 | /* Render a memory region into the global view. Ranges in @view obscure |
640 | * ranges in @mr. | |
641 | */ | |
642 | static void render_memory_region(FlatView *view, | |
643 | MemoryRegion *mr, | |
08dafab4 | 644 | Int128 base, |
fb1cd6f9 AK |
645 | AddrRange clip, |
646 | bool readonly) | |
093bc2cd AK |
647 | { |
648 | MemoryRegion *subregion; | |
649 | unsigned i; | |
a8170e5e | 650 | hwaddr offset_in_region; |
08dafab4 AK |
651 | Int128 remain; |
652 | Int128 now; | |
093bc2cd AK |
653 | FlatRange fr; |
654 | AddrRange tmp; | |
655 | ||
6bba19ba AK |
656 | if (!mr->enabled) { |
657 | return; | |
658 | } | |
659 | ||
08dafab4 | 660 | int128_addto(&base, int128_make64(mr->addr)); |
fb1cd6f9 | 661 | readonly |= mr->readonly; |
093bc2cd AK |
662 | |
663 | tmp = addrrange_make(base, mr->size); | |
664 | ||
665 | if (!addrrange_intersects(tmp, clip)) { | |
666 | return; | |
667 | } | |
668 | ||
669 | clip = addrrange_intersection(tmp, clip); | |
670 | ||
671 | if (mr->alias) { | |
08dafab4 AK |
672 | int128_subfrom(&base, int128_make64(mr->alias->addr)); |
673 | int128_subfrom(&base, int128_make64(mr->alias_offset)); | |
fb1cd6f9 | 674 | render_memory_region(view, mr->alias, base, clip, readonly); |
093bc2cd AK |
675 | return; |
676 | } | |
677 | ||
678 | /* Render subregions in priority order. */ | |
679 | QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) { | |
fb1cd6f9 | 680 | render_memory_region(view, subregion, base, clip, readonly); |
093bc2cd AK |
681 | } |
682 | ||
14a3c10a | 683 | if (!mr->terminates) { |
093bc2cd AK |
684 | return; |
685 | } | |
686 | ||
08dafab4 | 687 | offset_in_region = int128_get64(int128_sub(clip.start, base)); |
093bc2cd AK |
688 | base = clip.start; |
689 | remain = clip.size; | |
690 | ||
2eb74e1a | 691 | fr.mr = mr; |
6f6a5ef3 | 692 | fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr); |
b138e654 | 693 | fr.romd_mode = mr->romd_mode; |
2eb74e1a PC |
694 | fr.readonly = readonly; |
695 | ||
093bc2cd | 696 | /* Render the region itself into any gaps left by the current view. */ |
08dafab4 AK |
697 | for (i = 0; i < view->nr && int128_nz(remain); ++i) { |
698 | if (int128_ge(base, addrrange_end(view->ranges[i].addr))) { | |
093bc2cd AK |
699 | continue; |
700 | } | |
08dafab4 AK |
701 | if (int128_lt(base, view->ranges[i].addr.start)) { |
702 | now = int128_min(remain, | |
703 | int128_sub(view->ranges[i].addr.start, base)); | |
093bc2cd AK |
704 | fr.offset_in_region = offset_in_region; |
705 | fr.addr = addrrange_make(base, now); | |
706 | flatview_insert(view, i, &fr); | |
707 | ++i; | |
08dafab4 AK |
708 | int128_addto(&base, now); |
709 | offset_in_region += int128_get64(now); | |
710 | int128_subfrom(&remain, now); | |
093bc2cd | 711 | } |
d26a8cae AK |
712 | now = int128_sub(int128_min(int128_add(base, remain), |
713 | addrrange_end(view->ranges[i].addr)), | |
714 | base); | |
715 | int128_addto(&base, now); | |
716 | offset_in_region += int128_get64(now); | |
717 | int128_subfrom(&remain, now); | |
093bc2cd | 718 | } |
08dafab4 | 719 | if (int128_nz(remain)) { |
093bc2cd AK |
720 | fr.offset_in_region = offset_in_region; |
721 | fr.addr = addrrange_make(base, remain); | |
722 | flatview_insert(view, i, &fr); | |
723 | } | |
724 | } | |
725 | ||
726 | /* Render a memory topology into a list of disjoint absolute ranges. */ | |
a9a0c06d | 727 | static FlatView *generate_memory_topology(MemoryRegion *mr) |
093bc2cd | 728 | { |
a9a0c06d | 729 | FlatView *view; |
093bc2cd | 730 | |
cc94cd6d | 731 | view = flatview_new(); |
093bc2cd | 732 | |
83f3c251 | 733 | if (mr) { |
a9a0c06d | 734 | render_memory_region(view, mr, int128_zero(), |
83f3c251 AK |
735 | addrrange_make(int128_zero(), int128_2_64()), false); |
736 | } | |
a9a0c06d | 737 | flatview_simplify(view); |
093bc2cd AK |
738 | |
739 | return view; | |
740 | } | |
741 | ||
3e9d69e7 AK |
742 | static void address_space_add_del_ioeventfds(AddressSpace *as, |
743 | MemoryRegionIoeventfd *fds_new, | |
744 | unsigned fds_new_nb, | |
745 | MemoryRegionIoeventfd *fds_old, | |
746 | unsigned fds_old_nb) | |
747 | { | |
748 | unsigned iold, inew; | |
80a1ea37 AK |
749 | MemoryRegionIoeventfd *fd; |
750 | MemoryRegionSection section; | |
3e9d69e7 AK |
751 | |
752 | /* Generate a symmetric difference of the old and new fd sets, adding | |
753 | * and deleting as necessary. | |
754 | */ | |
755 | ||
756 | iold = inew = 0; | |
757 | while (iold < fds_old_nb || inew < fds_new_nb) { | |
758 | if (iold < fds_old_nb | |
759 | && (inew == fds_new_nb | |
760 | || memory_region_ioeventfd_before(fds_old[iold], | |
761 | fds_new[inew]))) { | |
80a1ea37 AK |
762 | fd = &fds_old[iold]; |
763 | section = (MemoryRegionSection) { | |
16620684 | 764 | .fv = address_space_to_flatview(as), |
80a1ea37 | 765 | .offset_within_address_space = int128_get64(fd->addr.start), |
052e87b0 | 766 | .size = fd->addr.size, |
80a1ea37 | 767 | }; |
9a54635d | 768 | MEMORY_LISTENER_CALL(as, eventfd_del, Forward, §ion, |
753d5e14 | 769 | fd->match_data, fd->data, fd->e); |
3e9d69e7 AK |
770 | ++iold; |
771 | } else if (inew < fds_new_nb | |
772 | && (iold == fds_old_nb | |
773 | || memory_region_ioeventfd_before(fds_new[inew], | |
774 | fds_old[iold]))) { | |
80a1ea37 AK |
775 | fd = &fds_new[inew]; |
776 | section = (MemoryRegionSection) { | |
16620684 | 777 | .fv = address_space_to_flatview(as), |
80a1ea37 | 778 | .offset_within_address_space = int128_get64(fd->addr.start), |
052e87b0 | 779 | .size = fd->addr.size, |
80a1ea37 | 780 | }; |
9a54635d | 781 | MEMORY_LISTENER_CALL(as, eventfd_add, Reverse, §ion, |
753d5e14 | 782 | fd->match_data, fd->data, fd->e); |
3e9d69e7 AK |
783 | ++inew; |
784 | } else { | |
785 | ++iold; | |
786 | ++inew; | |
787 | } | |
788 | } | |
789 | } | |
790 | ||
856d7245 PB |
791 | static FlatView *address_space_get_flatview(AddressSpace *as) |
792 | { | |
793 | FlatView *view; | |
794 | ||
374f2981 | 795 | rcu_read_lock(); |
447b0d0b | 796 | do { |
16620684 | 797 | view = address_space_to_flatview(as); |
447b0d0b PB |
798 | /* If somebody has replaced as->current_map concurrently, |
799 | * flatview_ref returns false. | |
800 | */ | |
801 | } while (!flatview_ref(view)); | |
374f2981 | 802 | rcu_read_unlock(); |
856d7245 PB |
803 | return view; |
804 | } | |
805 | ||
3e9d69e7 AK |
806 | static void address_space_update_ioeventfds(AddressSpace *as) |
807 | { | |
99e86347 | 808 | FlatView *view; |
3e9d69e7 AK |
809 | FlatRange *fr; |
810 | unsigned ioeventfd_nb = 0; | |
811 | MemoryRegionIoeventfd *ioeventfds = NULL; | |
812 | AddrRange tmp; | |
813 | unsigned i; | |
814 | ||
856d7245 | 815 | view = address_space_get_flatview(as); |
99e86347 | 816 | FOR_EACH_FLAT_RANGE(fr, view) { |
3e9d69e7 AK |
817 | for (i = 0; i < fr->mr->ioeventfd_nb; ++i) { |
818 | tmp = addrrange_shift(fr->mr->ioeventfds[i].addr, | |
08dafab4 AK |
819 | int128_sub(fr->addr.start, |
820 | int128_make64(fr->offset_in_region))); | |
3e9d69e7 AK |
821 | if (addrrange_intersects(fr->addr, tmp)) { |
822 | ++ioeventfd_nb; | |
7267c094 | 823 | ioeventfds = g_realloc(ioeventfds, |
3e9d69e7 AK |
824 | ioeventfd_nb * sizeof(*ioeventfds)); |
825 | ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i]; | |
826 | ioeventfds[ioeventfd_nb-1].addr = tmp; | |
827 | } | |
828 | } | |
829 | } | |
830 | ||
831 | address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb, | |
832 | as->ioeventfds, as->ioeventfd_nb); | |
833 | ||
7267c094 | 834 | g_free(as->ioeventfds); |
3e9d69e7 AK |
835 | as->ioeventfds = ioeventfds; |
836 | as->ioeventfd_nb = ioeventfd_nb; | |
856d7245 | 837 | flatview_unref(view); |
3e9d69e7 AK |
838 | } |
839 | ||
b8af1afb | 840 | static void address_space_update_topology_pass(AddressSpace *as, |
a9a0c06d PB |
841 | const FlatView *old_view, |
842 | const FlatView *new_view, | |
b8af1afb | 843 | bool adding) |
093bc2cd | 844 | { |
093bc2cd AK |
845 | unsigned iold, inew; |
846 | FlatRange *frold, *frnew; | |
093bc2cd AK |
847 | |
848 | /* Generate a symmetric difference of the old and new memory maps. | |
849 | * Kill ranges in the old map, and instantiate ranges in the new map. | |
850 | */ | |
851 | iold = inew = 0; | |
a9a0c06d PB |
852 | while (iold < old_view->nr || inew < new_view->nr) { |
853 | if (iold < old_view->nr) { | |
854 | frold = &old_view->ranges[iold]; | |
093bc2cd AK |
855 | } else { |
856 | frold = NULL; | |
857 | } | |
a9a0c06d PB |
858 | if (inew < new_view->nr) { |
859 | frnew = &new_view->ranges[inew]; | |
093bc2cd AK |
860 | } else { |
861 | frnew = NULL; | |
862 | } | |
863 | ||
864 | if (frold | |
865 | && (!frnew | |
08dafab4 AK |
866 | || int128_lt(frold->addr.start, frnew->addr.start) |
867 | || (int128_eq(frold->addr.start, frnew->addr.start) | |
093bc2cd | 868 | && !flatrange_equal(frold, frnew)))) { |
41a6e477 | 869 | /* In old but not in new, or in both but attributes changed. */ |
093bc2cd | 870 | |
b8af1afb | 871 | if (!adding) { |
72e22d2f | 872 | MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del); |
b8af1afb AK |
873 | } |
874 | ||
093bc2cd AK |
875 | ++iold; |
876 | } else if (frold && frnew && flatrange_equal(frold, frnew)) { | |
41a6e477 | 877 | /* In both and unchanged (except logging may have changed) */ |
093bc2cd | 878 | |
b8af1afb | 879 | if (adding) { |
50c1e149 | 880 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop); |
b2dfd71c PB |
881 | if (frnew->dirty_log_mask & ~frold->dirty_log_mask) { |
882 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start, | |
883 | frold->dirty_log_mask, | |
884 | frnew->dirty_log_mask); | |
885 | } | |
886 | if (frold->dirty_log_mask & ~frnew->dirty_log_mask) { | |
887 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop, | |
888 | frold->dirty_log_mask, | |
889 | frnew->dirty_log_mask); | |
b8af1afb | 890 | } |
5a583347 AK |
891 | } |
892 | ||
093bc2cd AK |
893 | ++iold; |
894 | ++inew; | |
093bc2cd AK |
895 | } else { |
896 | /* In new */ | |
897 | ||
b8af1afb | 898 | if (adding) { |
72e22d2f | 899 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add); |
b8af1afb AK |
900 | } |
901 | ||
093bc2cd AK |
902 | ++inew; |
903 | } | |
904 | } | |
b8af1afb AK |
905 | } |
906 | ||
b8af1afb AK |
907 | static void address_space_update_topology(AddressSpace *as) |
908 | { | |
856d7245 | 909 | FlatView *old_view = address_space_get_flatview(as); |
a9a0c06d | 910 | FlatView *new_view = generate_memory_topology(as->root); |
9a62e24f | 911 | int i; |
b8af1afb | 912 | |
8629d3fc | 913 | new_view->dispatch = address_space_dispatch_new(new_view); |
9a62e24f AK |
914 | for (i = 0; i < new_view->nr; i++) { |
915 | MemoryRegionSection mrs = | |
16620684 | 916 | section_from_flat_range(&new_view->ranges[i], new_view); |
8629d3fc | 917 | flatview_add_to_dispatch(new_view, &mrs); |
9a62e24f | 918 | } |
8629d3fc | 919 | address_space_dispatch_compact(new_view->dispatch); |
9a62e24f AK |
920 | |
921 | if (!QTAILQ_EMPTY(&as->listeners)) { | |
922 | address_space_update_topology_pass(as, old_view, new_view, false); | |
923 | address_space_update_topology_pass(as, old_view, new_view, true); | |
924 | } | |
b8af1afb | 925 | |
374f2981 PB |
926 | /* Writes are protected by the BQL. */ |
927 | atomic_rcu_set(&as->current_map, new_view); | |
66a6df1d | 928 | flatview_unref(old_view); |
856d7245 PB |
929 | |
930 | /* Note that all the old MemoryRegions are still alive up to this | |
931 | * point. This relieves most MemoryListeners from the need to | |
932 | * ref/unref the MemoryRegions they get---unless they use them | |
933 | * outside the iothread mutex, in which case precise reference | |
934 | * counting is necessary. | |
935 | */ | |
936 | flatview_unref(old_view); | |
937 | ||
3e9d69e7 | 938 | address_space_update_ioeventfds(as); |
093bc2cd AK |
939 | } |
940 | ||
4ef4db86 AK |
941 | void memory_region_transaction_begin(void) |
942 | { | |
bb880ded | 943 | qemu_flush_coalesced_mmio_buffer(); |
4ef4db86 AK |
944 | ++memory_region_transaction_depth; |
945 | } | |
946 | ||
947 | void memory_region_transaction_commit(void) | |
948 | { | |
0d673e36 AK |
949 | AddressSpace *as; |
950 | ||
4ef4db86 | 951 | assert(memory_region_transaction_depth); |
8d04fb55 JK |
952 | assert(qemu_mutex_iothread_locked()); |
953 | ||
4ef4db86 | 954 | --memory_region_transaction_depth; |
4dc56152 GA |
955 | if (!memory_region_transaction_depth) { |
956 | if (memory_region_update_pending) { | |
957 | MEMORY_LISTENER_CALL_GLOBAL(begin, Forward); | |
02e2b95f | 958 | |
4dc56152 GA |
959 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
960 | address_space_update_topology(as); | |
961 | } | |
ade9c1aa | 962 | memory_region_update_pending = false; |
4dc56152 GA |
963 | MEMORY_LISTENER_CALL_GLOBAL(commit, Forward); |
964 | } else if (ioeventfd_update_pending) { | |
965 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
966 | address_space_update_ioeventfds(as); | |
967 | } | |
ade9c1aa | 968 | ioeventfd_update_pending = false; |
4dc56152 | 969 | } |
4dc56152 | 970 | } |
4ef4db86 AK |
971 | } |
972 | ||
545e92e0 AK |
973 | static void memory_region_destructor_none(MemoryRegion *mr) |
974 | { | |
975 | } | |
976 | ||
977 | static void memory_region_destructor_ram(MemoryRegion *mr) | |
978 | { | |
f1060c55 | 979 | qemu_ram_free(mr->ram_block); |
545e92e0 AK |
980 | } |
981 | ||
b4fefef9 PC |
982 | static bool memory_region_need_escape(char c) |
983 | { | |
984 | return c == '/' || c == '[' || c == '\\' || c == ']'; | |
985 | } | |
986 | ||
987 | static char *memory_region_escape_name(const char *name) | |
988 | { | |
989 | const char *p; | |
990 | char *escaped, *q; | |
991 | uint8_t c; | |
992 | size_t bytes = 0; | |
993 | ||
994 | for (p = name; *p; p++) { | |
995 | bytes += memory_region_need_escape(*p) ? 4 : 1; | |
996 | } | |
997 | if (bytes == p - name) { | |
998 | return g_memdup(name, bytes + 1); | |
999 | } | |
1000 | ||
1001 | escaped = g_malloc(bytes + 1); | |
1002 | for (p = name, q = escaped; *p; p++) { | |
1003 | c = *p; | |
1004 | if (unlikely(memory_region_need_escape(c))) { | |
1005 | *q++ = '\\'; | |
1006 | *q++ = 'x'; | |
1007 | *q++ = "0123456789abcdef"[c >> 4]; | |
1008 | c = "0123456789abcdef"[c & 15]; | |
1009 | } | |
1010 | *q++ = c; | |
1011 | } | |
1012 | *q = 0; | |
1013 | return escaped; | |
1014 | } | |
1015 | ||
3df9d748 AK |
1016 | static void memory_region_do_init(MemoryRegion *mr, |
1017 | Object *owner, | |
1018 | const char *name, | |
1019 | uint64_t size) | |
093bc2cd | 1020 | { |
08dafab4 AK |
1021 | mr->size = int128_make64(size); |
1022 | if (size == UINT64_MAX) { | |
1023 | mr->size = int128_2_64(); | |
1024 | } | |
302fa283 | 1025 | mr->name = g_strdup(name); |
612263cf | 1026 | mr->owner = owner; |
58eaa217 | 1027 | mr->ram_block = NULL; |
b4fefef9 PC |
1028 | |
1029 | if (name) { | |
843ef73a PC |
1030 | char *escaped_name = memory_region_escape_name(name); |
1031 | char *name_array = g_strdup_printf("%s[*]", escaped_name); | |
612263cf PB |
1032 | |
1033 | if (!owner) { | |
1034 | owner = container_get(qdev_get_machine(), "/unattached"); | |
1035 | } | |
1036 | ||
843ef73a | 1037 | object_property_add_child(owner, name_array, OBJECT(mr), &error_abort); |
b4fefef9 | 1038 | object_unref(OBJECT(mr)); |
843ef73a PC |
1039 | g_free(name_array); |
1040 | g_free(escaped_name); | |
b4fefef9 PC |
1041 | } |
1042 | } | |
1043 | ||
3df9d748 AK |
1044 | void memory_region_init(MemoryRegion *mr, |
1045 | Object *owner, | |
1046 | const char *name, | |
1047 | uint64_t size) | |
1048 | { | |
1049 | object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION); | |
1050 | memory_region_do_init(mr, owner, name, size); | |
1051 | } | |
1052 | ||
d7bce999 EB |
1053 | static void memory_region_get_addr(Object *obj, Visitor *v, const char *name, |
1054 | void *opaque, Error **errp) | |
409ddd01 PC |
1055 | { |
1056 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1057 | uint64_t value = mr->addr; | |
1058 | ||
51e72bc1 | 1059 | visit_type_uint64(v, name, &value, errp); |
409ddd01 PC |
1060 | } |
1061 | ||
d7bce999 EB |
1062 | static void memory_region_get_container(Object *obj, Visitor *v, |
1063 | const char *name, void *opaque, | |
1064 | Error **errp) | |
409ddd01 PC |
1065 | { |
1066 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1067 | gchar *path = (gchar *)""; | |
1068 | ||
1069 | if (mr->container) { | |
1070 | path = object_get_canonical_path(OBJECT(mr->container)); | |
1071 | } | |
51e72bc1 | 1072 | visit_type_str(v, name, &path, errp); |
409ddd01 PC |
1073 | if (mr->container) { |
1074 | g_free(path); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | static Object *memory_region_resolve_container(Object *obj, void *opaque, | |
1079 | const char *part) | |
1080 | { | |
1081 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1082 | ||
1083 | return OBJECT(mr->container); | |
1084 | } | |
1085 | ||
d7bce999 EB |
1086 | static void memory_region_get_priority(Object *obj, Visitor *v, |
1087 | const char *name, void *opaque, | |
1088 | Error **errp) | |
d33382da PC |
1089 | { |
1090 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1091 | int32_t value = mr->priority; | |
1092 | ||
51e72bc1 | 1093 | visit_type_int32(v, name, &value, errp); |
d33382da PC |
1094 | } |
1095 | ||
d7bce999 EB |
1096 | static void memory_region_get_size(Object *obj, Visitor *v, const char *name, |
1097 | void *opaque, Error **errp) | |
52aef7bb PC |
1098 | { |
1099 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1100 | uint64_t value = memory_region_size(mr); | |
1101 | ||
51e72bc1 | 1102 | visit_type_uint64(v, name, &value, errp); |
52aef7bb PC |
1103 | } |
1104 | ||
b4fefef9 PC |
1105 | static void memory_region_initfn(Object *obj) |
1106 | { | |
1107 | MemoryRegion *mr = MEMORY_REGION(obj); | |
409ddd01 | 1108 | ObjectProperty *op; |
b4fefef9 PC |
1109 | |
1110 | mr->ops = &unassigned_mem_ops; | |
6bba19ba | 1111 | mr->enabled = true; |
5f9a5ea1 | 1112 | mr->romd_mode = true; |
196ea131 | 1113 | mr->global_locking = true; |
545e92e0 | 1114 | mr->destructor = memory_region_destructor_none; |
093bc2cd | 1115 | QTAILQ_INIT(&mr->subregions); |
093bc2cd | 1116 | QTAILQ_INIT(&mr->coalesced); |
409ddd01 PC |
1117 | |
1118 | op = object_property_add(OBJECT(mr), "container", | |
1119 | "link<" TYPE_MEMORY_REGION ">", | |
1120 | memory_region_get_container, | |
1121 | NULL, /* memory_region_set_container */ | |
1122 | NULL, NULL, &error_abort); | |
1123 | op->resolve = memory_region_resolve_container; | |
1124 | ||
1125 | object_property_add(OBJECT(mr), "addr", "uint64", | |
1126 | memory_region_get_addr, | |
1127 | NULL, /* memory_region_set_addr */ | |
1128 | NULL, NULL, &error_abort); | |
d33382da PC |
1129 | object_property_add(OBJECT(mr), "priority", "uint32", |
1130 | memory_region_get_priority, | |
1131 | NULL, /* memory_region_set_priority */ | |
1132 | NULL, NULL, &error_abort); | |
52aef7bb PC |
1133 | object_property_add(OBJECT(mr), "size", "uint64", |
1134 | memory_region_get_size, | |
1135 | NULL, /* memory_region_set_size, */ | |
1136 | NULL, NULL, &error_abort); | |
093bc2cd AK |
1137 | } |
1138 | ||
3df9d748 AK |
1139 | static void iommu_memory_region_initfn(Object *obj) |
1140 | { | |
1141 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1142 | ||
1143 | mr->is_iommu = true; | |
1144 | } | |
1145 | ||
b018ddf6 PB |
1146 | static uint64_t unassigned_mem_read(void *opaque, hwaddr addr, |
1147 | unsigned size) | |
1148 | { | |
1149 | #ifdef DEBUG_UNASSIGNED | |
1150 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
1151 | #endif | |
4917cf44 AF |
1152 | if (current_cpu != NULL) { |
1153 | cpu_unassigned_access(current_cpu, addr, false, false, 0, size); | |
c658b94f | 1154 | } |
68a7439a | 1155 | return 0; |
b018ddf6 PB |
1156 | } |
1157 | ||
1158 | static void unassigned_mem_write(void *opaque, hwaddr addr, | |
1159 | uint64_t val, unsigned size) | |
1160 | { | |
1161 | #ifdef DEBUG_UNASSIGNED | |
1162 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); | |
1163 | #endif | |
4917cf44 AF |
1164 | if (current_cpu != NULL) { |
1165 | cpu_unassigned_access(current_cpu, addr, true, false, 0, size); | |
c658b94f | 1166 | } |
b018ddf6 PB |
1167 | } |
1168 | ||
d197063f PB |
1169 | static bool unassigned_mem_accepts(void *opaque, hwaddr addr, |
1170 | unsigned size, bool is_write) | |
1171 | { | |
1172 | return false; | |
1173 | } | |
1174 | ||
1175 | const MemoryRegionOps unassigned_mem_ops = { | |
1176 | .valid.accepts = unassigned_mem_accepts, | |
1177 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1178 | }; | |
1179 | ||
4a2e242b AW |
1180 | static uint64_t memory_region_ram_device_read(void *opaque, |
1181 | hwaddr addr, unsigned size) | |
1182 | { | |
1183 | MemoryRegion *mr = opaque; | |
1184 | uint64_t data = (uint64_t)~0; | |
1185 | ||
1186 | switch (size) { | |
1187 | case 1: | |
1188 | data = *(uint8_t *)(mr->ram_block->host + addr); | |
1189 | break; | |
1190 | case 2: | |
1191 | data = *(uint16_t *)(mr->ram_block->host + addr); | |
1192 | break; | |
1193 | case 4: | |
1194 | data = *(uint32_t *)(mr->ram_block->host + addr); | |
1195 | break; | |
1196 | case 8: | |
1197 | data = *(uint64_t *)(mr->ram_block->host + addr); | |
1198 | break; | |
1199 | } | |
1200 | ||
1201 | trace_memory_region_ram_device_read(get_cpu_index(), mr, addr, data, size); | |
1202 | ||
1203 | return data; | |
1204 | } | |
1205 | ||
1206 | static void memory_region_ram_device_write(void *opaque, hwaddr addr, | |
1207 | uint64_t data, unsigned size) | |
1208 | { | |
1209 | MemoryRegion *mr = opaque; | |
1210 | ||
1211 | trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size); | |
1212 | ||
1213 | switch (size) { | |
1214 | case 1: | |
1215 | *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data; | |
1216 | break; | |
1217 | case 2: | |
1218 | *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data; | |
1219 | break; | |
1220 | case 4: | |
1221 | *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data; | |
1222 | break; | |
1223 | case 8: | |
1224 | *(uint64_t *)(mr->ram_block->host + addr) = data; | |
1225 | break; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | static const MemoryRegionOps ram_device_mem_ops = { | |
1230 | .read = memory_region_ram_device_read, | |
1231 | .write = memory_region_ram_device_write, | |
c99a29e7 | 1232 | .endianness = DEVICE_HOST_ENDIAN, |
4a2e242b AW |
1233 | .valid = { |
1234 | .min_access_size = 1, | |
1235 | .max_access_size = 8, | |
1236 | .unaligned = true, | |
1237 | }, | |
1238 | .impl = { | |
1239 | .min_access_size = 1, | |
1240 | .max_access_size = 8, | |
1241 | .unaligned = true, | |
1242 | }, | |
1243 | }; | |
1244 | ||
d2702032 PB |
1245 | bool memory_region_access_valid(MemoryRegion *mr, |
1246 | hwaddr addr, | |
1247 | unsigned size, | |
1248 | bool is_write) | |
093bc2cd | 1249 | { |
a014ed07 PB |
1250 | int access_size_min, access_size_max; |
1251 | int access_size, i; | |
897fa7cf | 1252 | |
093bc2cd AK |
1253 | if (!mr->ops->valid.unaligned && (addr & (size - 1))) { |
1254 | return false; | |
1255 | } | |
1256 | ||
a014ed07 | 1257 | if (!mr->ops->valid.accepts) { |
093bc2cd AK |
1258 | return true; |
1259 | } | |
1260 | ||
a014ed07 PB |
1261 | access_size_min = mr->ops->valid.min_access_size; |
1262 | if (!mr->ops->valid.min_access_size) { | |
1263 | access_size_min = 1; | |
1264 | } | |
1265 | ||
1266 | access_size_max = mr->ops->valid.max_access_size; | |
1267 | if (!mr->ops->valid.max_access_size) { | |
1268 | access_size_max = 4; | |
1269 | } | |
1270 | ||
1271 | access_size = MAX(MIN(size, access_size_max), access_size_min); | |
1272 | for (i = 0; i < size; i += access_size) { | |
1273 | if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size, | |
1274 | is_write)) { | |
1275 | return false; | |
1276 | } | |
093bc2cd | 1277 | } |
a014ed07 | 1278 | |
093bc2cd AK |
1279 | return true; |
1280 | } | |
1281 | ||
cc05c43a PM |
1282 | static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr, |
1283 | hwaddr addr, | |
1284 | uint64_t *pval, | |
1285 | unsigned size, | |
1286 | MemTxAttrs attrs) | |
093bc2cd | 1287 | { |
cc05c43a | 1288 | *pval = 0; |
093bc2cd | 1289 | |
ce5d2f33 | 1290 | if (mr->ops->read) { |
cc05c43a PM |
1291 | return access_with_adjusted_size(addr, pval, size, |
1292 | mr->ops->impl.min_access_size, | |
1293 | mr->ops->impl.max_access_size, | |
1294 | memory_region_read_accessor, | |
1295 | mr, attrs); | |
1296 | } else if (mr->ops->read_with_attrs) { | |
1297 | return access_with_adjusted_size(addr, pval, size, | |
1298 | mr->ops->impl.min_access_size, | |
1299 | mr->ops->impl.max_access_size, | |
1300 | memory_region_read_with_attrs_accessor, | |
1301 | mr, attrs); | |
ce5d2f33 | 1302 | } else { |
cc05c43a PM |
1303 | return access_with_adjusted_size(addr, pval, size, 1, 4, |
1304 | memory_region_oldmmio_read_accessor, | |
1305 | mr, attrs); | |
74901c3b | 1306 | } |
093bc2cd AK |
1307 | } |
1308 | ||
3b643495 PM |
1309 | MemTxResult memory_region_dispatch_read(MemoryRegion *mr, |
1310 | hwaddr addr, | |
1311 | uint64_t *pval, | |
1312 | unsigned size, | |
1313 | MemTxAttrs attrs) | |
a621f38d | 1314 | { |
cc05c43a PM |
1315 | MemTxResult r; |
1316 | ||
791af8c8 PB |
1317 | if (!memory_region_access_valid(mr, addr, size, false)) { |
1318 | *pval = unassigned_mem_read(mr, addr, size); | |
cc05c43a | 1319 | return MEMTX_DECODE_ERROR; |
791af8c8 | 1320 | } |
a621f38d | 1321 | |
cc05c43a | 1322 | r = memory_region_dispatch_read1(mr, addr, pval, size, attrs); |
791af8c8 | 1323 | adjust_endianness(mr, pval, size); |
cc05c43a | 1324 | return r; |
a621f38d | 1325 | } |
093bc2cd | 1326 | |
8c56c1a5 PF |
1327 | /* Return true if an eventfd was signalled */ |
1328 | static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr, | |
1329 | hwaddr addr, | |
1330 | uint64_t data, | |
1331 | unsigned size, | |
1332 | MemTxAttrs attrs) | |
1333 | { | |
1334 | MemoryRegionIoeventfd ioeventfd = { | |
1335 | .addr = addrrange_make(int128_make64(addr), int128_make64(size)), | |
1336 | .data = data, | |
1337 | }; | |
1338 | unsigned i; | |
1339 | ||
1340 | for (i = 0; i < mr->ioeventfd_nb; i++) { | |
1341 | ioeventfd.match_data = mr->ioeventfds[i].match_data; | |
1342 | ioeventfd.e = mr->ioeventfds[i].e; | |
1343 | ||
1344 | if (memory_region_ioeventfd_equal(ioeventfd, mr->ioeventfds[i])) { | |
1345 | event_notifier_set(ioeventfd.e); | |
1346 | return true; | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | return false; | |
1351 | } | |
1352 | ||
3b643495 PM |
1353 | MemTxResult memory_region_dispatch_write(MemoryRegion *mr, |
1354 | hwaddr addr, | |
1355 | uint64_t data, | |
1356 | unsigned size, | |
1357 | MemTxAttrs attrs) | |
a621f38d | 1358 | { |
897fa7cf | 1359 | if (!memory_region_access_valid(mr, addr, size, true)) { |
b018ddf6 | 1360 | unassigned_mem_write(mr, addr, data, size); |
cc05c43a | 1361 | return MEMTX_DECODE_ERROR; |
093bc2cd AK |
1362 | } |
1363 | ||
a621f38d AK |
1364 | adjust_endianness(mr, &data, size); |
1365 | ||
8c56c1a5 PF |
1366 | if ((!kvm_eventfds_enabled()) && |
1367 | memory_region_dispatch_write_eventfds(mr, addr, data, size, attrs)) { | |
1368 | return MEMTX_OK; | |
1369 | } | |
1370 | ||
ce5d2f33 | 1371 | if (mr->ops->write) { |
cc05c43a PM |
1372 | return access_with_adjusted_size(addr, &data, size, |
1373 | mr->ops->impl.min_access_size, | |
1374 | mr->ops->impl.max_access_size, | |
1375 | memory_region_write_accessor, mr, | |
1376 | attrs); | |
1377 | } else if (mr->ops->write_with_attrs) { | |
1378 | return | |
1379 | access_with_adjusted_size(addr, &data, size, | |
1380 | mr->ops->impl.min_access_size, | |
1381 | mr->ops->impl.max_access_size, | |
1382 | memory_region_write_with_attrs_accessor, | |
1383 | mr, attrs); | |
ce5d2f33 | 1384 | } else { |
cc05c43a PM |
1385 | return access_with_adjusted_size(addr, &data, size, 1, 4, |
1386 | memory_region_oldmmio_write_accessor, | |
1387 | mr, attrs); | |
74901c3b | 1388 | } |
093bc2cd AK |
1389 | } |
1390 | ||
093bc2cd | 1391 | void memory_region_init_io(MemoryRegion *mr, |
2c9b15ca | 1392 | Object *owner, |
093bc2cd AK |
1393 | const MemoryRegionOps *ops, |
1394 | void *opaque, | |
1395 | const char *name, | |
1396 | uint64_t size) | |
1397 | { | |
2c9b15ca | 1398 | memory_region_init(mr, owner, name, size); |
6d6d2abf | 1399 | mr->ops = ops ? ops : &unassigned_mem_ops; |
093bc2cd | 1400 | mr->opaque = opaque; |
14a3c10a | 1401 | mr->terminates = true; |
093bc2cd AK |
1402 | } |
1403 | ||
1cfe48c1 PM |
1404 | void memory_region_init_ram_nomigrate(MemoryRegion *mr, |
1405 | Object *owner, | |
1406 | const char *name, | |
1407 | uint64_t size, | |
1408 | Error **errp) | |
093bc2cd | 1409 | { |
2c9b15ca | 1410 | memory_region_init(mr, owner, name, size); |
8ea9252a | 1411 | mr->ram = true; |
14a3c10a | 1412 | mr->terminates = true; |
545e92e0 | 1413 | mr->destructor = memory_region_destructor_ram; |
8e41fb63 | 1414 | mr->ram_block = qemu_ram_alloc(size, mr, errp); |
677e7805 | 1415 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
0b183fc8 PB |
1416 | } |
1417 | ||
60786ef3 MT |
1418 | void memory_region_init_resizeable_ram(MemoryRegion *mr, |
1419 | Object *owner, | |
1420 | const char *name, | |
1421 | uint64_t size, | |
1422 | uint64_t max_size, | |
1423 | void (*resized)(const char*, | |
1424 | uint64_t length, | |
1425 | void *host), | |
1426 | Error **errp) | |
1427 | { | |
1428 | memory_region_init(mr, owner, name, size); | |
1429 | mr->ram = true; | |
1430 | mr->terminates = true; | |
1431 | mr->destructor = memory_region_destructor_ram; | |
8e41fb63 FZ |
1432 | mr->ram_block = qemu_ram_alloc_resizeable(size, max_size, resized, |
1433 | mr, errp); | |
677e7805 | 1434 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
60786ef3 MT |
1435 | } |
1436 | ||
0b183fc8 PB |
1437 | #ifdef __linux__ |
1438 | void memory_region_init_ram_from_file(MemoryRegion *mr, | |
1439 | struct Object *owner, | |
1440 | const char *name, | |
1441 | uint64_t size, | |
dbcb8981 | 1442 | bool share, |
7f56e740 PB |
1443 | const char *path, |
1444 | Error **errp) | |
0b183fc8 PB |
1445 | { |
1446 | memory_region_init(mr, owner, name, size); | |
1447 | mr->ram = true; | |
1448 | mr->terminates = true; | |
1449 | mr->destructor = memory_region_destructor_ram; | |
8e41fb63 | 1450 | mr->ram_block = qemu_ram_alloc_from_file(size, mr, share, path, errp); |
677e7805 | 1451 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
093bc2cd | 1452 | } |
fea617c5 MAL |
1453 | |
1454 | void memory_region_init_ram_from_fd(MemoryRegion *mr, | |
1455 | struct Object *owner, | |
1456 | const char *name, | |
1457 | uint64_t size, | |
1458 | bool share, | |
1459 | int fd, | |
1460 | Error **errp) | |
1461 | { | |
1462 | memory_region_init(mr, owner, name, size); | |
1463 | mr->ram = true; | |
1464 | mr->terminates = true; | |
1465 | mr->destructor = memory_region_destructor_ram; | |
1466 | mr->ram_block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp); | |
1467 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; | |
1468 | } | |
0b183fc8 | 1469 | #endif |
093bc2cd AK |
1470 | |
1471 | void memory_region_init_ram_ptr(MemoryRegion *mr, | |
2c9b15ca | 1472 | Object *owner, |
093bc2cd AK |
1473 | const char *name, |
1474 | uint64_t size, | |
1475 | void *ptr) | |
1476 | { | |
2c9b15ca | 1477 | memory_region_init(mr, owner, name, size); |
8ea9252a | 1478 | mr->ram = true; |
14a3c10a | 1479 | mr->terminates = true; |
fc3e7665 | 1480 | mr->destructor = memory_region_destructor_ram; |
677e7805 | 1481 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
ef701d7b HT |
1482 | |
1483 | /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */ | |
1484 | assert(ptr != NULL); | |
8e41fb63 | 1485 | mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal); |
093bc2cd AK |
1486 | } |
1487 | ||
21e00fa5 AW |
1488 | void memory_region_init_ram_device_ptr(MemoryRegion *mr, |
1489 | Object *owner, | |
1490 | const char *name, | |
1491 | uint64_t size, | |
1492 | void *ptr) | |
e4dc3f59 | 1493 | { |
21e00fa5 AW |
1494 | memory_region_init_ram_ptr(mr, owner, name, size, ptr); |
1495 | mr->ram_device = true; | |
4a2e242b AW |
1496 | mr->ops = &ram_device_mem_ops; |
1497 | mr->opaque = mr; | |
e4dc3f59 ND |
1498 | } |
1499 | ||
093bc2cd | 1500 | void memory_region_init_alias(MemoryRegion *mr, |
2c9b15ca | 1501 | Object *owner, |
093bc2cd AK |
1502 | const char *name, |
1503 | MemoryRegion *orig, | |
a8170e5e | 1504 | hwaddr offset, |
093bc2cd AK |
1505 | uint64_t size) |
1506 | { | |
2c9b15ca | 1507 | memory_region_init(mr, owner, name, size); |
093bc2cd AK |
1508 | mr->alias = orig; |
1509 | mr->alias_offset = offset; | |
1510 | } | |
1511 | ||
b59821a9 PM |
1512 | void memory_region_init_rom_nomigrate(MemoryRegion *mr, |
1513 | struct Object *owner, | |
1514 | const char *name, | |
1515 | uint64_t size, | |
1516 | Error **errp) | |
a1777f7f PM |
1517 | { |
1518 | memory_region_init(mr, owner, name, size); | |
1519 | mr->ram = true; | |
1520 | mr->readonly = true; | |
1521 | mr->terminates = true; | |
1522 | mr->destructor = memory_region_destructor_ram; | |
1523 | mr->ram_block = qemu_ram_alloc(size, mr, errp); | |
1524 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; | |
1525 | } | |
1526 | ||
b59821a9 PM |
1527 | void memory_region_init_rom_device_nomigrate(MemoryRegion *mr, |
1528 | Object *owner, | |
1529 | const MemoryRegionOps *ops, | |
1530 | void *opaque, | |
1531 | const char *name, | |
1532 | uint64_t size, | |
1533 | Error **errp) | |
d0a9b5bc | 1534 | { |
39e0b03d | 1535 | assert(ops); |
2c9b15ca | 1536 | memory_region_init(mr, owner, name, size); |
7bc2b9cd | 1537 | mr->ops = ops; |
75f5941c | 1538 | mr->opaque = opaque; |
d0a9b5bc | 1539 | mr->terminates = true; |
75c578dc | 1540 | mr->rom_device = true; |
58268c8d | 1541 | mr->destructor = memory_region_destructor_ram; |
8e41fb63 | 1542 | mr->ram_block = qemu_ram_alloc(size, mr, errp); |
d0a9b5bc AK |
1543 | } |
1544 | ||
1221a474 AK |
1545 | void memory_region_init_iommu(void *_iommu_mr, |
1546 | size_t instance_size, | |
1547 | const char *mrtypename, | |
2c9b15ca | 1548 | Object *owner, |
30951157 AK |
1549 | const char *name, |
1550 | uint64_t size) | |
1551 | { | |
1221a474 | 1552 | struct IOMMUMemoryRegion *iommu_mr; |
3df9d748 AK |
1553 | struct MemoryRegion *mr; |
1554 | ||
1221a474 AK |
1555 | object_initialize(_iommu_mr, instance_size, mrtypename); |
1556 | mr = MEMORY_REGION(_iommu_mr); | |
3df9d748 AK |
1557 | memory_region_do_init(mr, owner, name, size); |
1558 | iommu_mr = IOMMU_MEMORY_REGION(mr); | |
30951157 | 1559 | mr->terminates = true; /* then re-forwards */ |
3df9d748 AK |
1560 | QLIST_INIT(&iommu_mr->iommu_notify); |
1561 | iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE; | |
30951157 AK |
1562 | } |
1563 | ||
b4fefef9 | 1564 | static void memory_region_finalize(Object *obj) |
093bc2cd | 1565 | { |
b4fefef9 PC |
1566 | MemoryRegion *mr = MEMORY_REGION(obj); |
1567 | ||
2e2b8eb7 PB |
1568 | assert(!mr->container); |
1569 | ||
1570 | /* We know the region is not visible in any address space (it | |
1571 | * does not have a container and cannot be a root either because | |
1572 | * it has no references, so we can blindly clear mr->enabled. | |
1573 | * memory_region_set_enabled instead could trigger a transaction | |
1574 | * and cause an infinite loop. | |
1575 | */ | |
1576 | mr->enabled = false; | |
1577 | memory_region_transaction_begin(); | |
1578 | while (!QTAILQ_EMPTY(&mr->subregions)) { | |
1579 | MemoryRegion *subregion = QTAILQ_FIRST(&mr->subregions); | |
1580 | memory_region_del_subregion(mr, subregion); | |
1581 | } | |
1582 | memory_region_transaction_commit(); | |
1583 | ||
545e92e0 | 1584 | mr->destructor(mr); |
093bc2cd | 1585 | memory_region_clear_coalescing(mr); |
302fa283 | 1586 | g_free((char *)mr->name); |
7267c094 | 1587 | g_free(mr->ioeventfds); |
093bc2cd AK |
1588 | } |
1589 | ||
803c0816 PB |
1590 | Object *memory_region_owner(MemoryRegion *mr) |
1591 | { | |
22a893e4 PB |
1592 | Object *obj = OBJECT(mr); |
1593 | return obj->parent; | |
803c0816 PB |
1594 | } |
1595 | ||
46637be2 PB |
1596 | void memory_region_ref(MemoryRegion *mr) |
1597 | { | |
22a893e4 PB |
1598 | /* MMIO callbacks most likely will access data that belongs |
1599 | * to the owner, hence the need to ref/unref the owner whenever | |
1600 | * the memory region is in use. | |
1601 | * | |
1602 | * The memory region is a child of its owner. As long as the | |
1603 | * owner doesn't call unparent itself on the memory region, | |
1604 | * ref-ing the owner will also keep the memory region alive. | |
612263cf PB |
1605 | * Memory regions without an owner are supposed to never go away; |
1606 | * we do not ref/unref them because it slows down DMA sensibly. | |
22a893e4 | 1607 | */ |
612263cf PB |
1608 | if (mr && mr->owner) { |
1609 | object_ref(mr->owner); | |
46637be2 PB |
1610 | } |
1611 | } | |
1612 | ||
1613 | void memory_region_unref(MemoryRegion *mr) | |
1614 | { | |
612263cf PB |
1615 | if (mr && mr->owner) { |
1616 | object_unref(mr->owner); | |
46637be2 PB |
1617 | } |
1618 | } | |
1619 | ||
093bc2cd AK |
1620 | uint64_t memory_region_size(MemoryRegion *mr) |
1621 | { | |
08dafab4 AK |
1622 | if (int128_eq(mr->size, int128_2_64())) { |
1623 | return UINT64_MAX; | |
1624 | } | |
1625 | return int128_get64(mr->size); | |
093bc2cd AK |
1626 | } |
1627 | ||
5d546d4b | 1628 | const char *memory_region_name(const MemoryRegion *mr) |
8991c79b | 1629 | { |
d1dd32af PC |
1630 | if (!mr->name) { |
1631 | ((MemoryRegion *)mr)->name = | |
1632 | object_get_canonical_path_component(OBJECT(mr)); | |
1633 | } | |
302fa283 | 1634 | return mr->name; |
8991c79b AK |
1635 | } |
1636 | ||
21e00fa5 | 1637 | bool memory_region_is_ram_device(MemoryRegion *mr) |
e4dc3f59 | 1638 | { |
21e00fa5 | 1639 | return mr->ram_device; |
e4dc3f59 ND |
1640 | } |
1641 | ||
2d1a35be | 1642 | uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr) |
55043ba3 | 1643 | { |
6f6a5ef3 | 1644 | uint8_t mask = mr->dirty_log_mask; |
adaad61c | 1645 | if (global_dirty_log && mr->ram_block) { |
6f6a5ef3 PB |
1646 | mask |= (1 << DIRTY_MEMORY_MIGRATION); |
1647 | } | |
1648 | return mask; | |
55043ba3 AK |
1649 | } |
1650 | ||
2d1a35be PB |
1651 | bool memory_region_is_logging(MemoryRegion *mr, uint8_t client) |
1652 | { | |
1653 | return memory_region_get_dirty_log_mask(mr) & (1 << client); | |
1654 | } | |
1655 | ||
3df9d748 | 1656 | static void memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr) |
5bf3d319 PX |
1657 | { |
1658 | IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE; | |
1659 | IOMMUNotifier *iommu_notifier; | |
1221a474 | 1660 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); |
5bf3d319 | 1661 | |
3df9d748 | 1662 | IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) { |
5bf3d319 PX |
1663 | flags |= iommu_notifier->notifier_flags; |
1664 | } | |
1665 | ||
1221a474 AK |
1666 | if (flags != iommu_mr->iommu_notify_flags && imrc->notify_flag_changed) { |
1667 | imrc->notify_flag_changed(iommu_mr, | |
1668 | iommu_mr->iommu_notify_flags, | |
1669 | flags); | |
5bf3d319 PX |
1670 | } |
1671 | ||
3df9d748 | 1672 | iommu_mr->iommu_notify_flags = flags; |
5bf3d319 PX |
1673 | } |
1674 | ||
cdb30812 PX |
1675 | void memory_region_register_iommu_notifier(MemoryRegion *mr, |
1676 | IOMMUNotifier *n) | |
06866575 | 1677 | { |
3df9d748 AK |
1678 | IOMMUMemoryRegion *iommu_mr; |
1679 | ||
efcd38c5 JW |
1680 | if (mr->alias) { |
1681 | memory_region_register_iommu_notifier(mr->alias, n); | |
1682 | return; | |
1683 | } | |
1684 | ||
cdb30812 | 1685 | /* We need to register for at least one bitfield */ |
3df9d748 | 1686 | iommu_mr = IOMMU_MEMORY_REGION(mr); |
cdb30812 | 1687 | assert(n->notifier_flags != IOMMU_NOTIFIER_NONE); |
698feb5e | 1688 | assert(n->start <= n->end); |
3df9d748 AK |
1689 | QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node); |
1690 | memory_region_update_iommu_notify_flags(iommu_mr); | |
06866575 DG |
1691 | } |
1692 | ||
3df9d748 | 1693 | uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr) |
a788f227 | 1694 | { |
1221a474 AK |
1695 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); |
1696 | ||
1697 | if (imrc->get_min_page_size) { | |
1698 | return imrc->get_min_page_size(iommu_mr); | |
f682e9c2 AK |
1699 | } |
1700 | return TARGET_PAGE_SIZE; | |
1701 | } | |
1702 | ||
3df9d748 | 1703 | void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n) |
f682e9c2 | 1704 | { |
3df9d748 | 1705 | MemoryRegion *mr = MEMORY_REGION(iommu_mr); |
1221a474 | 1706 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); |
f682e9c2 | 1707 | hwaddr addr, granularity; |
a788f227 DG |
1708 | IOMMUTLBEntry iotlb; |
1709 | ||
faa362e3 | 1710 | /* If the IOMMU has its own replay callback, override */ |
1221a474 AK |
1711 | if (imrc->replay) { |
1712 | imrc->replay(iommu_mr, n); | |
faa362e3 PX |
1713 | return; |
1714 | } | |
1715 | ||
3df9d748 | 1716 | granularity = memory_region_iommu_get_min_page_size(iommu_mr); |
f682e9c2 | 1717 | |
a788f227 | 1718 | for (addr = 0; addr < memory_region_size(mr); addr += granularity) { |
1221a474 | 1719 | iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE); |
a788f227 DG |
1720 | if (iotlb.perm != IOMMU_NONE) { |
1721 | n->notify(n, &iotlb); | |
1722 | } | |
1723 | ||
1724 | /* if (2^64 - MR size) < granularity, it's possible to get an | |
1725 | * infinite loop here. This should catch such a wraparound */ | |
1726 | if ((addr + granularity) < addr) { | |
1727 | break; | |
1728 | } | |
1729 | } | |
1730 | } | |
1731 | ||
3df9d748 | 1732 | void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr) |
de472e4a PX |
1733 | { |
1734 | IOMMUNotifier *notifier; | |
1735 | ||
3df9d748 AK |
1736 | IOMMU_NOTIFIER_FOREACH(notifier, iommu_mr) { |
1737 | memory_region_iommu_replay(iommu_mr, notifier); | |
de472e4a PX |
1738 | } |
1739 | } | |
1740 | ||
cdb30812 PX |
1741 | void memory_region_unregister_iommu_notifier(MemoryRegion *mr, |
1742 | IOMMUNotifier *n) | |
06866575 | 1743 | { |
3df9d748 AK |
1744 | IOMMUMemoryRegion *iommu_mr; |
1745 | ||
efcd38c5 JW |
1746 | if (mr->alias) { |
1747 | memory_region_unregister_iommu_notifier(mr->alias, n); | |
1748 | return; | |
1749 | } | |
cdb30812 | 1750 | QLIST_REMOVE(n, node); |
3df9d748 AK |
1751 | iommu_mr = IOMMU_MEMORY_REGION(mr); |
1752 | memory_region_update_iommu_notify_flags(iommu_mr); | |
06866575 DG |
1753 | } |
1754 | ||
bd2bfa4c PX |
1755 | void memory_region_notify_one(IOMMUNotifier *notifier, |
1756 | IOMMUTLBEntry *entry) | |
06866575 | 1757 | { |
cdb30812 PX |
1758 | IOMMUNotifierFlag request_flags; |
1759 | ||
bd2bfa4c PX |
1760 | /* |
1761 | * Skip the notification if the notification does not overlap | |
1762 | * with registered range. | |
1763 | */ | |
1764 | if (notifier->start > entry->iova + entry->addr_mask + 1 || | |
1765 | notifier->end < entry->iova) { | |
1766 | return; | |
1767 | } | |
cdb30812 | 1768 | |
bd2bfa4c | 1769 | if (entry->perm & IOMMU_RW) { |
cdb30812 PX |
1770 | request_flags = IOMMU_NOTIFIER_MAP; |
1771 | } else { | |
1772 | request_flags = IOMMU_NOTIFIER_UNMAP; | |
1773 | } | |
1774 | ||
bd2bfa4c PX |
1775 | if (notifier->notifier_flags & request_flags) { |
1776 | notifier->notify(notifier, entry); | |
1777 | } | |
1778 | } | |
1779 | ||
3df9d748 | 1780 | void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, |
bd2bfa4c PX |
1781 | IOMMUTLBEntry entry) |
1782 | { | |
1783 | IOMMUNotifier *iommu_notifier; | |
1784 | ||
3df9d748 | 1785 | assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr))); |
bd2bfa4c | 1786 | |
3df9d748 | 1787 | IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) { |
bd2bfa4c | 1788 | memory_region_notify_one(iommu_notifier, &entry); |
cdb30812 | 1789 | } |
06866575 DG |
1790 | } |
1791 | ||
093bc2cd AK |
1792 | void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) |
1793 | { | |
5a583347 | 1794 | uint8_t mask = 1 << client; |
deb809ed | 1795 | uint8_t old_logging; |
5a583347 | 1796 | |
dbddac6d | 1797 | assert(client == DIRTY_MEMORY_VGA); |
deb809ed PB |
1798 | old_logging = mr->vga_logging_count; |
1799 | mr->vga_logging_count += log ? 1 : -1; | |
1800 | if (!!old_logging == !!mr->vga_logging_count) { | |
1801 | return; | |
1802 | } | |
1803 | ||
59023ef4 | 1804 | memory_region_transaction_begin(); |
5a583347 | 1805 | mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); |
22bde714 | 1806 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1807 | memory_region_transaction_commit(); |
093bc2cd AK |
1808 | } |
1809 | ||
a8170e5e AK |
1810 | bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr, |
1811 | hwaddr size, unsigned client) | |
093bc2cd | 1812 | { |
8e41fb63 FZ |
1813 | assert(mr->ram_block); |
1814 | return cpu_physical_memory_get_dirty(memory_region_get_ram_addr(mr) + addr, | |
1815 | size, client); | |
093bc2cd AK |
1816 | } |
1817 | ||
a8170e5e AK |
1818 | void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr, |
1819 | hwaddr size) | |
093bc2cd | 1820 | { |
8e41fb63 FZ |
1821 | assert(mr->ram_block); |
1822 | cpu_physical_memory_set_dirty_range(memory_region_get_ram_addr(mr) + addr, | |
1823 | size, | |
58d2707e | 1824 | memory_region_get_dirty_log_mask(mr)); |
093bc2cd AK |
1825 | } |
1826 | ||
6c279db8 JQ |
1827 | bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr, |
1828 | hwaddr size, unsigned client) | |
1829 | { | |
8e41fb63 FZ |
1830 | assert(mr->ram_block); |
1831 | return cpu_physical_memory_test_and_clear_dirty( | |
1832 | memory_region_get_ram_addr(mr) + addr, size, client); | |
6c279db8 JQ |
1833 | } |
1834 | ||
8deaf12c GH |
1835 | DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr, |
1836 | hwaddr addr, | |
1837 | hwaddr size, | |
1838 | unsigned client) | |
1839 | { | |
1840 | assert(mr->ram_block); | |
1841 | return cpu_physical_memory_snapshot_and_clear_dirty( | |
1842 | memory_region_get_ram_addr(mr) + addr, size, client); | |
1843 | } | |
1844 | ||
1845 | bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap, | |
1846 | hwaddr addr, hwaddr size) | |
1847 | { | |
1848 | assert(mr->ram_block); | |
1849 | return cpu_physical_memory_snapshot_get_dirty(snap, | |
1850 | memory_region_get_ram_addr(mr) + addr, size); | |
1851 | } | |
6c279db8 | 1852 | |
093bc2cd AK |
1853 | void memory_region_sync_dirty_bitmap(MemoryRegion *mr) |
1854 | { | |
0a752eee | 1855 | MemoryListener *listener; |
0d673e36 | 1856 | AddressSpace *as; |
0a752eee | 1857 | FlatView *view; |
5a583347 AK |
1858 | FlatRange *fr; |
1859 | ||
0a752eee PB |
1860 | /* If the same address space has multiple log_sync listeners, we |
1861 | * visit that address space's FlatView multiple times. But because | |
1862 | * log_sync listeners are rare, it's still cheaper than walking each | |
1863 | * address space once. | |
1864 | */ | |
1865 | QTAILQ_FOREACH(listener, &memory_listeners, link) { | |
1866 | if (!listener->log_sync) { | |
1867 | continue; | |
1868 | } | |
1869 | as = listener->address_space; | |
1870 | view = address_space_get_flatview(as); | |
99e86347 | 1871 | FOR_EACH_FLAT_RANGE(fr, view) { |
0d673e36 | 1872 | if (fr->mr == mr) { |
16620684 | 1873 | MemoryRegionSection mrs = section_from_flat_range(fr, view); |
0a752eee | 1874 | listener->log_sync(listener, &mrs); |
0d673e36 | 1875 | } |
5a583347 | 1876 | } |
856d7245 | 1877 | flatview_unref(view); |
5a583347 | 1878 | } |
093bc2cd AK |
1879 | } |
1880 | ||
1881 | void memory_region_set_readonly(MemoryRegion *mr, bool readonly) | |
1882 | { | |
fb1cd6f9 | 1883 | if (mr->readonly != readonly) { |
59023ef4 | 1884 | memory_region_transaction_begin(); |
fb1cd6f9 | 1885 | mr->readonly = readonly; |
22bde714 | 1886 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1887 | memory_region_transaction_commit(); |
fb1cd6f9 | 1888 | } |
093bc2cd AK |
1889 | } |
1890 | ||
5f9a5ea1 | 1891 | void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode) |
d0a9b5bc | 1892 | { |
5f9a5ea1 | 1893 | if (mr->romd_mode != romd_mode) { |
59023ef4 | 1894 | memory_region_transaction_begin(); |
5f9a5ea1 | 1895 | mr->romd_mode = romd_mode; |
22bde714 | 1896 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1897 | memory_region_transaction_commit(); |
d0a9b5bc AK |
1898 | } |
1899 | } | |
1900 | ||
a8170e5e AK |
1901 | void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr, |
1902 | hwaddr size, unsigned client) | |
093bc2cd | 1903 | { |
8e41fb63 FZ |
1904 | assert(mr->ram_block); |
1905 | cpu_physical_memory_test_and_clear_dirty( | |
1906 | memory_region_get_ram_addr(mr) + addr, size, client); | |
093bc2cd AK |
1907 | } |
1908 | ||
a35ba7be PB |
1909 | int memory_region_get_fd(MemoryRegion *mr) |
1910 | { | |
4ff87573 PB |
1911 | int fd; |
1912 | ||
1913 | rcu_read_lock(); | |
1914 | while (mr->alias) { | |
1915 | mr = mr->alias; | |
a35ba7be | 1916 | } |
4ff87573 PB |
1917 | fd = mr->ram_block->fd; |
1918 | rcu_read_unlock(); | |
a35ba7be | 1919 | |
4ff87573 PB |
1920 | return fd; |
1921 | } | |
a35ba7be | 1922 | |
093bc2cd AK |
1923 | void *memory_region_get_ram_ptr(MemoryRegion *mr) |
1924 | { | |
49b24afc PB |
1925 | void *ptr; |
1926 | uint64_t offset = 0; | |
093bc2cd | 1927 | |
49b24afc PB |
1928 | rcu_read_lock(); |
1929 | while (mr->alias) { | |
1930 | offset += mr->alias_offset; | |
1931 | mr = mr->alias; | |
1932 | } | |
8e41fb63 | 1933 | assert(mr->ram_block); |
0878d0e1 | 1934 | ptr = qemu_map_ram_ptr(mr->ram_block, offset); |
49b24afc | 1935 | rcu_read_unlock(); |
093bc2cd | 1936 | |
0878d0e1 | 1937 | return ptr; |
093bc2cd AK |
1938 | } |
1939 | ||
07bdaa41 PB |
1940 | MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset) |
1941 | { | |
1942 | RAMBlock *block; | |
1943 | ||
1944 | block = qemu_ram_block_from_host(ptr, false, offset); | |
1945 | if (!block) { | |
1946 | return NULL; | |
1947 | } | |
1948 | ||
1949 | return block->mr; | |
1950 | } | |
1951 | ||
7ebb2745 FZ |
1952 | ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr) |
1953 | { | |
1954 | return mr->ram_block ? mr->ram_block->offset : RAM_ADDR_INVALID; | |
1955 | } | |
1956 | ||
37d7c084 PB |
1957 | void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp) |
1958 | { | |
8e41fb63 | 1959 | assert(mr->ram_block); |
37d7c084 | 1960 | |
fa53a0e5 | 1961 | qemu_ram_resize(mr->ram_block, newsize, errp); |
37d7c084 PB |
1962 | } |
1963 | ||
0d673e36 | 1964 | static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as) |
093bc2cd | 1965 | { |
99e86347 | 1966 | FlatView *view; |
093bc2cd AK |
1967 | FlatRange *fr; |
1968 | CoalescedMemoryRange *cmr; | |
1969 | AddrRange tmp; | |
95d2994a | 1970 | MemoryRegionSection section; |
093bc2cd | 1971 | |
856d7245 | 1972 | view = address_space_get_flatview(as); |
99e86347 | 1973 | FOR_EACH_FLAT_RANGE(fr, view) { |
093bc2cd | 1974 | if (fr->mr == mr) { |
95d2994a | 1975 | section = (MemoryRegionSection) { |
16620684 | 1976 | .fv = view, |
95d2994a | 1977 | .offset_within_address_space = int128_get64(fr->addr.start), |
052e87b0 | 1978 | .size = fr->addr.size, |
95d2994a AK |
1979 | }; |
1980 | ||
9a54635d | 1981 | MEMORY_LISTENER_CALL(as, coalesced_mmio_del, Reverse, §ion, |
95d2994a AK |
1982 | int128_get64(fr->addr.start), |
1983 | int128_get64(fr->addr.size)); | |
093bc2cd AK |
1984 | QTAILQ_FOREACH(cmr, &mr->coalesced, link) { |
1985 | tmp = addrrange_shift(cmr->addr, | |
08dafab4 AK |
1986 | int128_sub(fr->addr.start, |
1987 | int128_make64(fr->offset_in_region))); | |
093bc2cd AK |
1988 | if (!addrrange_intersects(tmp, fr->addr)) { |
1989 | continue; | |
1990 | } | |
1991 | tmp = addrrange_intersection(tmp, fr->addr); | |
9a54635d | 1992 | MEMORY_LISTENER_CALL(as, coalesced_mmio_add, Forward, §ion, |
95d2994a AK |
1993 | int128_get64(tmp.start), |
1994 | int128_get64(tmp.size)); | |
093bc2cd AK |
1995 | } |
1996 | } | |
1997 | } | |
856d7245 | 1998 | flatview_unref(view); |
093bc2cd AK |
1999 | } |
2000 | ||
0d673e36 AK |
2001 | static void memory_region_update_coalesced_range(MemoryRegion *mr) |
2002 | { | |
2003 | AddressSpace *as; | |
2004 | ||
2005 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
2006 | memory_region_update_coalesced_range_as(mr, as); | |
2007 | } | |
2008 | } | |
2009 | ||
093bc2cd AK |
2010 | void memory_region_set_coalescing(MemoryRegion *mr) |
2011 | { | |
2012 | memory_region_clear_coalescing(mr); | |
08dafab4 | 2013 | memory_region_add_coalescing(mr, 0, int128_get64(mr->size)); |
093bc2cd AK |
2014 | } |
2015 | ||
2016 | void memory_region_add_coalescing(MemoryRegion *mr, | |
a8170e5e | 2017 | hwaddr offset, |
093bc2cd AK |
2018 | uint64_t size) |
2019 | { | |
7267c094 | 2020 | CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr)); |
093bc2cd | 2021 | |
08dafab4 | 2022 | cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size)); |
093bc2cd AK |
2023 | QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link); |
2024 | memory_region_update_coalesced_range(mr); | |
d410515e | 2025 | memory_region_set_flush_coalesced(mr); |
093bc2cd AK |
2026 | } |
2027 | ||
2028 | void memory_region_clear_coalescing(MemoryRegion *mr) | |
2029 | { | |
2030 | CoalescedMemoryRange *cmr; | |
ab5b3db5 | 2031 | bool updated = false; |
093bc2cd | 2032 | |
d410515e JK |
2033 | qemu_flush_coalesced_mmio_buffer(); |
2034 | mr->flush_coalesced_mmio = false; | |
2035 | ||
093bc2cd AK |
2036 | while (!QTAILQ_EMPTY(&mr->coalesced)) { |
2037 | cmr = QTAILQ_FIRST(&mr->coalesced); | |
2038 | QTAILQ_REMOVE(&mr->coalesced, cmr, link); | |
7267c094 | 2039 | g_free(cmr); |
ab5b3db5 FZ |
2040 | updated = true; |
2041 | } | |
2042 | ||
2043 | if (updated) { | |
2044 | memory_region_update_coalesced_range(mr); | |
093bc2cd | 2045 | } |
093bc2cd AK |
2046 | } |
2047 | ||
d410515e JK |
2048 | void memory_region_set_flush_coalesced(MemoryRegion *mr) |
2049 | { | |
2050 | mr->flush_coalesced_mmio = true; | |
2051 | } | |
2052 | ||
2053 | void memory_region_clear_flush_coalesced(MemoryRegion *mr) | |
2054 | { | |
2055 | qemu_flush_coalesced_mmio_buffer(); | |
2056 | if (QTAILQ_EMPTY(&mr->coalesced)) { | |
2057 | mr->flush_coalesced_mmio = false; | |
2058 | } | |
2059 | } | |
2060 | ||
196ea131 JK |
2061 | void memory_region_set_global_locking(MemoryRegion *mr) |
2062 | { | |
2063 | mr->global_locking = true; | |
2064 | } | |
2065 | ||
2066 | void memory_region_clear_global_locking(MemoryRegion *mr) | |
2067 | { | |
2068 | mr->global_locking = false; | |
2069 | } | |
2070 | ||
8c56c1a5 PF |
2071 | static bool userspace_eventfd_warning; |
2072 | ||
3e9d69e7 | 2073 | void memory_region_add_eventfd(MemoryRegion *mr, |
a8170e5e | 2074 | hwaddr addr, |
3e9d69e7 AK |
2075 | unsigned size, |
2076 | bool match_data, | |
2077 | uint64_t data, | |
753d5e14 | 2078 | EventNotifier *e) |
3e9d69e7 AK |
2079 | { |
2080 | MemoryRegionIoeventfd mrfd = { | |
08dafab4 AK |
2081 | .addr.start = int128_make64(addr), |
2082 | .addr.size = int128_make64(size), | |
3e9d69e7 AK |
2083 | .match_data = match_data, |
2084 | .data = data, | |
753d5e14 | 2085 | .e = e, |
3e9d69e7 AK |
2086 | }; |
2087 | unsigned i; | |
2088 | ||
8c56c1a5 PF |
2089 | if (kvm_enabled() && (!(kvm_eventfds_enabled() || |
2090 | userspace_eventfd_warning))) { | |
2091 | userspace_eventfd_warning = true; | |
2092 | error_report("Using eventfd without MMIO binding in KVM. " | |
2093 | "Suboptimal performance expected"); | |
2094 | } | |
2095 | ||
b8aecea2 JW |
2096 | if (size) { |
2097 | adjust_endianness(mr, &mrfd.data, size); | |
2098 | } | |
59023ef4 | 2099 | memory_region_transaction_begin(); |
3e9d69e7 AK |
2100 | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
2101 | if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) { | |
2102 | break; | |
2103 | } | |
2104 | } | |
2105 | ++mr->ioeventfd_nb; | |
7267c094 | 2106 | mr->ioeventfds = g_realloc(mr->ioeventfds, |
3e9d69e7 AK |
2107 | sizeof(*mr->ioeventfds) * mr->ioeventfd_nb); |
2108 | memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i], | |
2109 | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i)); | |
2110 | mr->ioeventfds[i] = mrfd; | |
4dc56152 | 2111 | ioeventfd_update_pending |= mr->enabled; |
59023ef4 | 2112 | memory_region_transaction_commit(); |
3e9d69e7 AK |
2113 | } |
2114 | ||
2115 | void memory_region_del_eventfd(MemoryRegion *mr, | |
a8170e5e | 2116 | hwaddr addr, |
3e9d69e7 AK |
2117 | unsigned size, |
2118 | bool match_data, | |
2119 | uint64_t data, | |
753d5e14 | 2120 | EventNotifier *e) |
3e9d69e7 AK |
2121 | { |
2122 | MemoryRegionIoeventfd mrfd = { | |
08dafab4 AK |
2123 | .addr.start = int128_make64(addr), |
2124 | .addr.size = int128_make64(size), | |
3e9d69e7 AK |
2125 | .match_data = match_data, |
2126 | .data = data, | |
753d5e14 | 2127 | .e = e, |
3e9d69e7 AK |
2128 | }; |
2129 | unsigned i; | |
2130 | ||
b8aecea2 JW |
2131 | if (size) { |
2132 | adjust_endianness(mr, &mrfd.data, size); | |
2133 | } | |
59023ef4 | 2134 | memory_region_transaction_begin(); |
3e9d69e7 AK |
2135 | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
2136 | if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) { | |
2137 | break; | |
2138 | } | |
2139 | } | |
2140 | assert(i != mr->ioeventfd_nb); | |
2141 | memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1], | |
2142 | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1))); | |
2143 | --mr->ioeventfd_nb; | |
7267c094 | 2144 | mr->ioeventfds = g_realloc(mr->ioeventfds, |
3e9d69e7 | 2145 | sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1); |
4dc56152 | 2146 | ioeventfd_update_pending |= mr->enabled; |
59023ef4 | 2147 | memory_region_transaction_commit(); |
3e9d69e7 AK |
2148 | } |
2149 | ||
feca4ac1 | 2150 | static void memory_region_update_container_subregions(MemoryRegion *subregion) |
093bc2cd | 2151 | { |
feca4ac1 | 2152 | MemoryRegion *mr = subregion->container; |
093bc2cd AK |
2153 | MemoryRegion *other; |
2154 | ||
59023ef4 JK |
2155 | memory_region_transaction_begin(); |
2156 | ||
dfde4e6e | 2157 | memory_region_ref(subregion); |
093bc2cd AK |
2158 | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { |
2159 | if (subregion->priority >= other->priority) { | |
2160 | QTAILQ_INSERT_BEFORE(other, subregion, subregions_link); | |
2161 | goto done; | |
2162 | } | |
2163 | } | |
2164 | QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); | |
2165 | done: | |
22bde714 | 2166 | memory_region_update_pending |= mr->enabled && subregion->enabled; |
59023ef4 | 2167 | memory_region_transaction_commit(); |
093bc2cd AK |
2168 | } |
2169 | ||
0598701a PC |
2170 | static void memory_region_add_subregion_common(MemoryRegion *mr, |
2171 | hwaddr offset, | |
2172 | MemoryRegion *subregion) | |
2173 | { | |
feca4ac1 PB |
2174 | assert(!subregion->container); |
2175 | subregion->container = mr; | |
0598701a | 2176 | subregion->addr = offset; |
feca4ac1 | 2177 | memory_region_update_container_subregions(subregion); |
0598701a | 2178 | } |
093bc2cd AK |
2179 | |
2180 | void memory_region_add_subregion(MemoryRegion *mr, | |
a8170e5e | 2181 | hwaddr offset, |
093bc2cd AK |
2182 | MemoryRegion *subregion) |
2183 | { | |
093bc2cd AK |
2184 | subregion->priority = 0; |
2185 | memory_region_add_subregion_common(mr, offset, subregion); | |
2186 | } | |
2187 | ||
2188 | void memory_region_add_subregion_overlap(MemoryRegion *mr, | |
a8170e5e | 2189 | hwaddr offset, |
093bc2cd | 2190 | MemoryRegion *subregion, |
a1ff8ae0 | 2191 | int priority) |
093bc2cd | 2192 | { |
093bc2cd AK |
2193 | subregion->priority = priority; |
2194 | memory_region_add_subregion_common(mr, offset, subregion); | |
2195 | } | |
2196 | ||
2197 | void memory_region_del_subregion(MemoryRegion *mr, | |
2198 | MemoryRegion *subregion) | |
2199 | { | |
59023ef4 | 2200 | memory_region_transaction_begin(); |
feca4ac1 PB |
2201 | assert(subregion->container == mr); |
2202 | subregion->container = NULL; | |
093bc2cd | 2203 | QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); |
dfde4e6e | 2204 | memory_region_unref(subregion); |
22bde714 | 2205 | memory_region_update_pending |= mr->enabled && subregion->enabled; |
59023ef4 | 2206 | memory_region_transaction_commit(); |
6bba19ba AK |
2207 | } |
2208 | ||
2209 | void memory_region_set_enabled(MemoryRegion *mr, bool enabled) | |
2210 | { | |
2211 | if (enabled == mr->enabled) { | |
2212 | return; | |
2213 | } | |
59023ef4 | 2214 | memory_region_transaction_begin(); |
6bba19ba | 2215 | mr->enabled = enabled; |
22bde714 | 2216 | memory_region_update_pending = true; |
59023ef4 | 2217 | memory_region_transaction_commit(); |
093bc2cd | 2218 | } |
1c0ffa58 | 2219 | |
e7af4c67 MT |
2220 | void memory_region_set_size(MemoryRegion *mr, uint64_t size) |
2221 | { | |
2222 | Int128 s = int128_make64(size); | |
2223 | ||
2224 | if (size == UINT64_MAX) { | |
2225 | s = int128_2_64(); | |
2226 | } | |
2227 | if (int128_eq(s, mr->size)) { | |
2228 | return; | |
2229 | } | |
2230 | memory_region_transaction_begin(); | |
2231 | mr->size = s; | |
2232 | memory_region_update_pending = true; | |
2233 | memory_region_transaction_commit(); | |
2234 | } | |
2235 | ||
67891b8a | 2236 | static void memory_region_readd_subregion(MemoryRegion *mr) |
2282e1af | 2237 | { |
feca4ac1 | 2238 | MemoryRegion *container = mr->container; |
2282e1af | 2239 | |
feca4ac1 | 2240 | if (container) { |
67891b8a PC |
2241 | memory_region_transaction_begin(); |
2242 | memory_region_ref(mr); | |
feca4ac1 PB |
2243 | memory_region_del_subregion(container, mr); |
2244 | mr->container = container; | |
2245 | memory_region_update_container_subregions(mr); | |
67891b8a PC |
2246 | memory_region_unref(mr); |
2247 | memory_region_transaction_commit(); | |
2282e1af | 2248 | } |
67891b8a | 2249 | } |
2282e1af | 2250 | |
67891b8a PC |
2251 | void memory_region_set_address(MemoryRegion *mr, hwaddr addr) |
2252 | { | |
2253 | if (addr != mr->addr) { | |
2254 | mr->addr = addr; | |
2255 | memory_region_readd_subregion(mr); | |
2256 | } | |
2282e1af AK |
2257 | } |
2258 | ||
a8170e5e | 2259 | void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset) |
4703359e | 2260 | { |
4703359e | 2261 | assert(mr->alias); |
4703359e | 2262 | |
59023ef4 | 2263 | if (offset == mr->alias_offset) { |
4703359e AK |
2264 | return; |
2265 | } | |
2266 | ||
59023ef4 JK |
2267 | memory_region_transaction_begin(); |
2268 | mr->alias_offset = offset; | |
22bde714 | 2269 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 2270 | memory_region_transaction_commit(); |
4703359e AK |
2271 | } |
2272 | ||
a2b257d6 IM |
2273 | uint64_t memory_region_get_alignment(const MemoryRegion *mr) |
2274 | { | |
2275 | return mr->align; | |
2276 | } | |
2277 | ||
e2177955 AK |
2278 | static int cmp_flatrange_addr(const void *addr_, const void *fr_) |
2279 | { | |
2280 | const AddrRange *addr = addr_; | |
2281 | const FlatRange *fr = fr_; | |
2282 | ||
2283 | if (int128_le(addrrange_end(*addr), fr->addr.start)) { | |
2284 | return -1; | |
2285 | } else if (int128_ge(addr->start, addrrange_end(fr->addr))) { | |
2286 | return 1; | |
2287 | } | |
2288 | return 0; | |
2289 | } | |
2290 | ||
99e86347 | 2291 | static FlatRange *flatview_lookup(FlatView *view, AddrRange addr) |
e2177955 | 2292 | { |
99e86347 | 2293 | return bsearch(&addr, view->ranges, view->nr, |
e2177955 AK |
2294 | sizeof(FlatRange), cmp_flatrange_addr); |
2295 | } | |
2296 | ||
eed2bacf IM |
2297 | bool memory_region_is_mapped(MemoryRegion *mr) |
2298 | { | |
2299 | return mr->container ? true : false; | |
2300 | } | |
2301 | ||
c6742b14 PB |
2302 | /* Same as memory_region_find, but it does not add a reference to the |
2303 | * returned region. It must be called from an RCU critical section. | |
2304 | */ | |
2305 | static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr, | |
2306 | hwaddr addr, uint64_t size) | |
e2177955 | 2307 | { |
052e87b0 | 2308 | MemoryRegionSection ret = { .mr = NULL }; |
73034e9e PB |
2309 | MemoryRegion *root; |
2310 | AddressSpace *as; | |
2311 | AddrRange range; | |
99e86347 | 2312 | FlatView *view; |
73034e9e PB |
2313 | FlatRange *fr; |
2314 | ||
2315 | addr += mr->addr; | |
feca4ac1 PB |
2316 | for (root = mr; root->container; ) { |
2317 | root = root->container; | |
73034e9e PB |
2318 | addr += root->addr; |
2319 | } | |
e2177955 | 2320 | |
73034e9e | 2321 | as = memory_region_to_address_space(root); |
eed2bacf IM |
2322 | if (!as) { |
2323 | return ret; | |
2324 | } | |
73034e9e | 2325 | range = addrrange_make(int128_make64(addr), int128_make64(size)); |
99e86347 | 2326 | |
16620684 | 2327 | view = address_space_to_flatview(as); |
99e86347 | 2328 | fr = flatview_lookup(view, range); |
e2177955 | 2329 | if (!fr) { |
c6742b14 | 2330 | return ret; |
e2177955 AK |
2331 | } |
2332 | ||
99e86347 | 2333 | while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) { |
e2177955 AK |
2334 | --fr; |
2335 | } | |
2336 | ||
2337 | ret.mr = fr->mr; | |
16620684 | 2338 | ret.fv = view; |
e2177955 AK |
2339 | range = addrrange_intersection(range, fr->addr); |
2340 | ret.offset_within_region = fr->offset_in_region; | |
2341 | ret.offset_within_region += int128_get64(int128_sub(range.start, | |
2342 | fr->addr.start)); | |
052e87b0 | 2343 | ret.size = range.size; |
e2177955 | 2344 | ret.offset_within_address_space = int128_get64(range.start); |
7a8499e8 | 2345 | ret.readonly = fr->readonly; |
c6742b14 PB |
2346 | return ret; |
2347 | } | |
2348 | ||
2349 | MemoryRegionSection memory_region_find(MemoryRegion *mr, | |
2350 | hwaddr addr, uint64_t size) | |
2351 | { | |
2352 | MemoryRegionSection ret; | |
2353 | rcu_read_lock(); | |
2354 | ret = memory_region_find_rcu(mr, addr, size); | |
2355 | if (ret.mr) { | |
2356 | memory_region_ref(ret.mr); | |
2357 | } | |
2b647668 | 2358 | rcu_read_unlock(); |
e2177955 AK |
2359 | return ret; |
2360 | } | |
2361 | ||
c6742b14 PB |
2362 | bool memory_region_present(MemoryRegion *container, hwaddr addr) |
2363 | { | |
2364 | MemoryRegion *mr; | |
2365 | ||
2366 | rcu_read_lock(); | |
2367 | mr = memory_region_find_rcu(container, addr, 1).mr; | |
2368 | rcu_read_unlock(); | |
2369 | return mr && mr != container; | |
2370 | } | |
2371 | ||
9c1f8f44 | 2372 | void memory_global_dirty_log_sync(void) |
86e775c6 | 2373 | { |
9c1f8f44 PB |
2374 | MemoryListener *listener; |
2375 | AddressSpace *as; | |
99e86347 | 2376 | FlatView *view; |
7664e80c AK |
2377 | FlatRange *fr; |
2378 | ||
9c1f8f44 PB |
2379 | QTAILQ_FOREACH(listener, &memory_listeners, link) { |
2380 | if (!listener->log_sync) { | |
2381 | continue; | |
2382 | } | |
d45fa784 | 2383 | as = listener->address_space; |
9c1f8f44 PB |
2384 | view = address_space_get_flatview(as); |
2385 | FOR_EACH_FLAT_RANGE(fr, view) { | |
adaad61c | 2386 | if (fr->dirty_log_mask) { |
16620684 AK |
2387 | MemoryRegionSection mrs = section_from_flat_range(fr, view); |
2388 | ||
adaad61c PB |
2389 | listener->log_sync(listener, &mrs); |
2390 | } | |
9c1f8f44 PB |
2391 | } |
2392 | flatview_unref(view); | |
7664e80c AK |
2393 | } |
2394 | } | |
2395 | ||
19310760 JZ |
2396 | static VMChangeStateEntry *vmstate_change; |
2397 | ||
7664e80c AK |
2398 | void memory_global_dirty_log_start(void) |
2399 | { | |
19310760 JZ |
2400 | if (vmstate_change) { |
2401 | qemu_del_vm_change_state_handler(vmstate_change); | |
2402 | vmstate_change = NULL; | |
2403 | } | |
2404 | ||
7664e80c | 2405 | global_dirty_log = true; |
6f6a5ef3 | 2406 | |
7376e582 | 2407 | MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); |
6f6a5ef3 PB |
2408 | |
2409 | /* Refresh DIRTY_LOG_MIGRATION bit. */ | |
2410 | memory_region_transaction_begin(); | |
2411 | memory_region_update_pending = true; | |
2412 | memory_region_transaction_commit(); | |
7664e80c AK |
2413 | } |
2414 | ||
19310760 | 2415 | static void memory_global_dirty_log_do_stop(void) |
7664e80c | 2416 | { |
7664e80c | 2417 | global_dirty_log = false; |
6f6a5ef3 PB |
2418 | |
2419 | /* Refresh DIRTY_LOG_MIGRATION bit. */ | |
2420 | memory_region_transaction_begin(); | |
2421 | memory_region_update_pending = true; | |
2422 | memory_region_transaction_commit(); | |
2423 | ||
7376e582 | 2424 | MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); |
7664e80c AK |
2425 | } |
2426 | ||
19310760 JZ |
2427 | static void memory_vm_change_state_handler(void *opaque, int running, |
2428 | RunState state) | |
2429 | { | |
2430 | if (running) { | |
2431 | memory_global_dirty_log_do_stop(); | |
2432 | ||
2433 | if (vmstate_change) { | |
2434 | qemu_del_vm_change_state_handler(vmstate_change); | |
2435 | vmstate_change = NULL; | |
2436 | } | |
2437 | } | |
2438 | } | |
2439 | ||
2440 | void memory_global_dirty_log_stop(void) | |
2441 | { | |
2442 | if (!runstate_is_running()) { | |
2443 | if (vmstate_change) { | |
2444 | return; | |
2445 | } | |
2446 | vmstate_change = qemu_add_vm_change_state_handler( | |
2447 | memory_vm_change_state_handler, NULL); | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | memory_global_dirty_log_do_stop(); | |
2452 | } | |
2453 | ||
7664e80c AK |
2454 | static void listener_add_address_space(MemoryListener *listener, |
2455 | AddressSpace *as) | |
2456 | { | |
99e86347 | 2457 | FlatView *view; |
7664e80c AK |
2458 | FlatRange *fr; |
2459 | ||
680a4783 PB |
2460 | if (listener->begin) { |
2461 | listener->begin(listener); | |
2462 | } | |
7664e80c | 2463 | if (global_dirty_log) { |
975aefe0 AK |
2464 | if (listener->log_global_start) { |
2465 | listener->log_global_start(listener); | |
2466 | } | |
7664e80c | 2467 | } |
975aefe0 | 2468 | |
856d7245 | 2469 | view = address_space_get_flatview(as); |
99e86347 | 2470 | FOR_EACH_FLAT_RANGE(fr, view) { |
7664e80c AK |
2471 | MemoryRegionSection section = { |
2472 | .mr = fr->mr, | |
16620684 | 2473 | .fv = view, |
7664e80c | 2474 | .offset_within_region = fr->offset_in_region, |
052e87b0 | 2475 | .size = fr->addr.size, |
7664e80c | 2476 | .offset_within_address_space = int128_get64(fr->addr.start), |
7a8499e8 | 2477 | .readonly = fr->readonly, |
7664e80c | 2478 | }; |
680a4783 PB |
2479 | if (fr->dirty_log_mask && listener->log_start) { |
2480 | listener->log_start(listener, §ion, 0, fr->dirty_log_mask); | |
2481 | } | |
975aefe0 AK |
2482 | if (listener->region_add) { |
2483 | listener->region_add(listener, §ion); | |
2484 | } | |
7664e80c | 2485 | } |
680a4783 PB |
2486 | if (listener->commit) { |
2487 | listener->commit(listener); | |
2488 | } | |
856d7245 | 2489 | flatview_unref(view); |
7664e80c AK |
2490 | } |
2491 | ||
d45fa784 | 2492 | void memory_listener_register(MemoryListener *listener, AddressSpace *as) |
7664e80c | 2493 | { |
72e22d2f AK |
2494 | MemoryListener *other = NULL; |
2495 | ||
d45fa784 | 2496 | listener->address_space = as; |
72e22d2f AK |
2497 | if (QTAILQ_EMPTY(&memory_listeners) |
2498 | || listener->priority >= QTAILQ_LAST(&memory_listeners, | |
2499 | memory_listeners)->priority) { | |
2500 | QTAILQ_INSERT_TAIL(&memory_listeners, listener, link); | |
2501 | } else { | |
2502 | QTAILQ_FOREACH(other, &memory_listeners, link) { | |
2503 | if (listener->priority < other->priority) { | |
2504 | break; | |
2505 | } | |
2506 | } | |
2507 | QTAILQ_INSERT_BEFORE(other, listener, link); | |
2508 | } | |
0d673e36 | 2509 | |
9a54635d PB |
2510 | if (QTAILQ_EMPTY(&as->listeners) |
2511 | || listener->priority >= QTAILQ_LAST(&as->listeners, | |
2512 | memory_listeners)->priority) { | |
2513 | QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as); | |
2514 | } else { | |
2515 | QTAILQ_FOREACH(other, &as->listeners, link_as) { | |
2516 | if (listener->priority < other->priority) { | |
2517 | break; | |
2518 | } | |
2519 | } | |
2520 | QTAILQ_INSERT_BEFORE(other, listener, link_as); | |
2521 | } | |
2522 | ||
d45fa784 | 2523 | listener_add_address_space(listener, as); |
7664e80c AK |
2524 | } |
2525 | ||
2526 | void memory_listener_unregister(MemoryListener *listener) | |
2527 | { | |
1d8280c1 PB |
2528 | if (!listener->address_space) { |
2529 | return; | |
2530 | } | |
2531 | ||
72e22d2f | 2532 | QTAILQ_REMOVE(&memory_listeners, listener, link); |
9a54635d | 2533 | QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as); |
1d8280c1 | 2534 | listener->address_space = NULL; |
86e775c6 | 2535 | } |
e2177955 | 2536 | |
c9356746 FK |
2537 | bool memory_region_request_mmio_ptr(MemoryRegion *mr, hwaddr addr) |
2538 | { | |
2539 | void *host; | |
2540 | unsigned size = 0; | |
2541 | unsigned offset = 0; | |
2542 | Object *new_interface; | |
2543 | ||
2544 | if (!mr || !mr->ops->request_ptr) { | |
2545 | return false; | |
2546 | } | |
2547 | ||
2548 | /* | |
2549 | * Avoid an update if the request_ptr call | |
2550 | * memory_region_invalidate_mmio_ptr which seems to be likely when we use | |
2551 | * a cache. | |
2552 | */ | |
2553 | memory_region_transaction_begin(); | |
2554 | ||
2555 | host = mr->ops->request_ptr(mr->opaque, addr - mr->addr, &size, &offset); | |
2556 | ||
2557 | if (!host || !size) { | |
2558 | memory_region_transaction_commit(); | |
2559 | return false; | |
2560 | } | |
2561 | ||
2562 | new_interface = object_new("mmio_interface"); | |
2563 | qdev_prop_set_uint64(DEVICE(new_interface), "start", offset); | |
2564 | qdev_prop_set_uint64(DEVICE(new_interface), "end", offset + size - 1); | |
2565 | qdev_prop_set_bit(DEVICE(new_interface), "ro", true); | |
2566 | qdev_prop_set_ptr(DEVICE(new_interface), "host_ptr", host); | |
2567 | qdev_prop_set_ptr(DEVICE(new_interface), "subregion", mr); | |
2568 | object_property_set_bool(OBJECT(new_interface), true, "realized", NULL); | |
2569 | ||
2570 | memory_region_transaction_commit(); | |
2571 | return true; | |
2572 | } | |
2573 | ||
2574 | typedef struct MMIOPtrInvalidate { | |
2575 | MemoryRegion *mr; | |
2576 | hwaddr offset; | |
2577 | unsigned size; | |
2578 | int busy; | |
2579 | int allocated; | |
2580 | } MMIOPtrInvalidate; | |
2581 | ||
2582 | #define MAX_MMIO_INVALIDATE 10 | |
2583 | static MMIOPtrInvalidate mmio_ptr_invalidate_list[MAX_MMIO_INVALIDATE]; | |
2584 | ||
2585 | static void memory_region_do_invalidate_mmio_ptr(CPUState *cpu, | |
2586 | run_on_cpu_data data) | |
2587 | { | |
2588 | MMIOPtrInvalidate *invalidate_data = (MMIOPtrInvalidate *)data.host_ptr; | |
2589 | MemoryRegion *mr = invalidate_data->mr; | |
2590 | hwaddr offset = invalidate_data->offset; | |
2591 | unsigned size = invalidate_data->size; | |
2592 | MemoryRegionSection section = memory_region_find(mr, offset, size); | |
2593 | ||
2594 | qemu_mutex_lock_iothread(); | |
2595 | ||
2596 | /* Reset dirty so this doesn't happen later. */ | |
2597 | cpu_physical_memory_test_and_clear_dirty(offset, size, 1); | |
2598 | ||
2599 | if (section.mr != mr) { | |
2600 | /* memory_region_find add a ref on section.mr */ | |
2601 | memory_region_unref(section.mr); | |
2602 | if (MMIO_INTERFACE(section.mr->owner)) { | |
2603 | /* We found the interface just drop it. */ | |
2604 | object_property_set_bool(section.mr->owner, false, "realized", | |
2605 | NULL); | |
2606 | object_unref(section.mr->owner); | |
2607 | object_unparent(section.mr->owner); | |
2608 | } | |
2609 | } | |
2610 | ||
2611 | qemu_mutex_unlock_iothread(); | |
2612 | ||
2613 | if (invalidate_data->allocated) { | |
2614 | g_free(invalidate_data); | |
2615 | } else { | |
2616 | invalidate_data->busy = 0; | |
2617 | } | |
2618 | } | |
2619 | ||
2620 | void memory_region_invalidate_mmio_ptr(MemoryRegion *mr, hwaddr offset, | |
2621 | unsigned size) | |
2622 | { | |
2623 | size_t i; | |
2624 | MMIOPtrInvalidate *invalidate_data = NULL; | |
2625 | ||
2626 | for (i = 0; i < MAX_MMIO_INVALIDATE; i++) { | |
2627 | if (atomic_cmpxchg(&(mmio_ptr_invalidate_list[i].busy), 0, 1) == 0) { | |
2628 | invalidate_data = &mmio_ptr_invalidate_list[i]; | |
2629 | break; | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | if (!invalidate_data) { | |
2634 | invalidate_data = g_malloc0(sizeof(MMIOPtrInvalidate)); | |
2635 | invalidate_data->allocated = 1; | |
2636 | } | |
2637 | ||
2638 | invalidate_data->mr = mr; | |
2639 | invalidate_data->offset = offset; | |
2640 | invalidate_data->size = size; | |
2641 | ||
2642 | async_safe_run_on_cpu(first_cpu, memory_region_do_invalidate_mmio_ptr, | |
2643 | RUN_ON_CPU_HOST_PTR(invalidate_data)); | |
2644 | } | |
2645 | ||
7dca8043 | 2646 | void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name) |
1c0ffa58 | 2647 | { |
ac95190e | 2648 | memory_region_ref(root); |
59023ef4 | 2649 | memory_region_transaction_begin(); |
f0c02d15 | 2650 | as->ref_count = 1; |
8786db7c | 2651 | as->root = root; |
f0c02d15 | 2652 | as->malloced = false; |
cc94cd6d | 2653 | as->current_map = flatview_new(); |
4c19eb72 AK |
2654 | as->ioeventfd_nb = 0; |
2655 | as->ioeventfds = NULL; | |
9a54635d | 2656 | QTAILQ_INIT(&as->listeners); |
0d673e36 | 2657 | QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link); |
7dca8043 | 2658 | as->name = g_strdup(name ? name : "anonymous"); |
f43793c7 PB |
2659 | memory_region_update_pending |= root->enabled; |
2660 | memory_region_transaction_commit(); | |
1c0ffa58 | 2661 | } |
658b2224 | 2662 | |
374f2981 | 2663 | static void do_address_space_destroy(AddressSpace *as) |
83f3c251 | 2664 | { |
f0c02d15 | 2665 | bool do_free = as->malloced; |
078c44f4 | 2666 | |
9a54635d | 2667 | assert(QTAILQ_EMPTY(&as->listeners)); |
078c44f4 | 2668 | |
856d7245 | 2669 | flatview_unref(as->current_map); |
7dca8043 | 2670 | g_free(as->name); |
4c19eb72 | 2671 | g_free(as->ioeventfds); |
ac95190e | 2672 | memory_region_unref(as->root); |
f0c02d15 PC |
2673 | if (do_free) { |
2674 | g_free(as); | |
2675 | } | |
2676 | } | |
2677 | ||
2678 | AddressSpace *address_space_init_shareable(MemoryRegion *root, const char *name) | |
2679 | { | |
2680 | AddressSpace *as; | |
2681 | ||
2682 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
2683 | if (root == as->root && as->malloced) { | |
2684 | as->ref_count++; | |
2685 | return as; | |
2686 | } | |
2687 | } | |
2688 | ||
2689 | as = g_malloc0(sizeof *as); | |
2690 | address_space_init(as, root, name); | |
2691 | as->malloced = true; | |
2692 | return as; | |
83f3c251 AK |
2693 | } |
2694 | ||
374f2981 PB |
2695 | void address_space_destroy(AddressSpace *as) |
2696 | { | |
ac95190e PB |
2697 | MemoryRegion *root = as->root; |
2698 | ||
f0c02d15 PC |
2699 | as->ref_count--; |
2700 | if (as->ref_count) { | |
2701 | return; | |
2702 | } | |
374f2981 PB |
2703 | /* Flush out anything from MemoryListeners listening in on this */ |
2704 | memory_region_transaction_begin(); | |
2705 | as->root = NULL; | |
2706 | memory_region_transaction_commit(); | |
2707 | QTAILQ_REMOVE(&address_spaces, as, address_spaces_link); | |
2708 | ||
2709 | /* At this point, as->dispatch and as->current_map are dummy | |
2710 | * entries that the guest should never use. Wait for the old | |
2711 | * values to expire before freeing the data. | |
2712 | */ | |
ac95190e | 2713 | as->root = root; |
374f2981 PB |
2714 | call_rcu(as, do_address_space_destroy, rcu); |
2715 | } | |
2716 | ||
4e831901 PX |
2717 | static const char *memory_region_type(MemoryRegion *mr) |
2718 | { | |
2719 | if (memory_region_is_ram_device(mr)) { | |
2720 | return "ramd"; | |
2721 | } else if (memory_region_is_romd(mr)) { | |
2722 | return "romd"; | |
2723 | } else if (memory_region_is_rom(mr)) { | |
2724 | return "rom"; | |
2725 | } else if (memory_region_is_ram(mr)) { | |
2726 | return "ram"; | |
2727 | } else { | |
2728 | return "i/o"; | |
2729 | } | |
2730 | } | |
2731 | ||
314e2987 BS |
2732 | typedef struct MemoryRegionList MemoryRegionList; |
2733 | ||
2734 | struct MemoryRegionList { | |
2735 | const MemoryRegion *mr; | |
a16878d2 | 2736 | QTAILQ_ENTRY(MemoryRegionList) mrqueue; |
314e2987 BS |
2737 | }; |
2738 | ||
a16878d2 | 2739 | typedef QTAILQ_HEAD(mrqueue, MemoryRegionList) MemoryRegionListHead; |
314e2987 | 2740 | |
4e831901 PX |
2741 | #define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \ |
2742 | int128_sub((size), int128_one())) : 0) | |
2743 | #define MTREE_INDENT " " | |
2744 | ||
314e2987 BS |
2745 | static void mtree_print_mr(fprintf_function mon_printf, void *f, |
2746 | const MemoryRegion *mr, unsigned int level, | |
a8170e5e | 2747 | hwaddr base, |
9479c57a | 2748 | MemoryRegionListHead *alias_print_queue) |
314e2987 | 2749 | { |
9479c57a JK |
2750 | MemoryRegionList *new_ml, *ml, *next_ml; |
2751 | MemoryRegionListHead submr_print_queue; | |
314e2987 BS |
2752 | const MemoryRegion *submr; |
2753 | unsigned int i; | |
b31f8412 | 2754 | hwaddr cur_start, cur_end; |
314e2987 | 2755 | |
f8a9f720 | 2756 | if (!mr) { |
314e2987 BS |
2757 | return; |
2758 | } | |
2759 | ||
2760 | for (i = 0; i < level; i++) { | |
4e831901 | 2761 | mon_printf(f, MTREE_INDENT); |
314e2987 BS |
2762 | } |
2763 | ||
b31f8412 PX |
2764 | cur_start = base + mr->addr; |
2765 | cur_end = cur_start + MR_SIZE(mr->size); | |
2766 | ||
2767 | /* | |
2768 | * Try to detect overflow of memory region. This should never | |
2769 | * happen normally. When it happens, we dump something to warn the | |
2770 | * user who is observing this. | |
2771 | */ | |
2772 | if (cur_start < base || cur_end < cur_start) { | |
2773 | mon_printf(f, "[DETECTED OVERFLOW!] "); | |
2774 | } | |
2775 | ||
314e2987 BS |
2776 | if (mr->alias) { |
2777 | MemoryRegionList *ml; | |
2778 | bool found = false; | |
2779 | ||
2780 | /* check if the alias is already in the queue */ | |
a16878d2 | 2781 | QTAILQ_FOREACH(ml, alias_print_queue, mrqueue) { |
f54bb15f | 2782 | if (ml->mr == mr->alias) { |
314e2987 BS |
2783 | found = true; |
2784 | } | |
2785 | } | |
2786 | ||
2787 | if (!found) { | |
2788 | ml = g_new(MemoryRegionList, 1); | |
2789 | ml->mr = mr->alias; | |
a16878d2 | 2790 | QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue); |
314e2987 | 2791 | } |
4896d74b | 2792 | mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx |
4e831901 | 2793 | " (prio %d, %s): alias %s @%s " TARGET_FMT_plx |
f8a9f720 | 2794 | "-" TARGET_FMT_plx "%s\n", |
b31f8412 | 2795 | cur_start, cur_end, |
4b474ba7 | 2796 | mr->priority, |
4e831901 | 2797 | memory_region_type((MemoryRegion *)mr), |
3fb18b4d PC |
2798 | memory_region_name(mr), |
2799 | memory_region_name(mr->alias), | |
314e2987 | 2800 | mr->alias_offset, |
4e831901 | 2801 | mr->alias_offset + MR_SIZE(mr->size), |
f8a9f720 | 2802 | mr->enabled ? "" : " [disabled]"); |
314e2987 | 2803 | } else { |
4896d74b | 2804 | mon_printf(f, |
4e831901 | 2805 | TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %s): %s%s\n", |
b31f8412 | 2806 | cur_start, cur_end, |
4b474ba7 | 2807 | mr->priority, |
4e831901 | 2808 | memory_region_type((MemoryRegion *)mr), |
f8a9f720 GH |
2809 | memory_region_name(mr), |
2810 | mr->enabled ? "" : " [disabled]"); | |
314e2987 | 2811 | } |
9479c57a JK |
2812 | |
2813 | QTAILQ_INIT(&submr_print_queue); | |
2814 | ||
314e2987 | 2815 | QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) { |
9479c57a JK |
2816 | new_ml = g_new(MemoryRegionList, 1); |
2817 | new_ml->mr = submr; | |
a16878d2 | 2818 | QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) { |
9479c57a JK |
2819 | if (new_ml->mr->addr < ml->mr->addr || |
2820 | (new_ml->mr->addr == ml->mr->addr && | |
2821 | new_ml->mr->priority > ml->mr->priority)) { | |
a16878d2 | 2822 | QTAILQ_INSERT_BEFORE(ml, new_ml, mrqueue); |
9479c57a JK |
2823 | new_ml = NULL; |
2824 | break; | |
2825 | } | |
2826 | } | |
2827 | if (new_ml) { | |
a16878d2 | 2828 | QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, mrqueue); |
9479c57a JK |
2829 | } |
2830 | } | |
2831 | ||
a16878d2 | 2832 | QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) { |
b31f8412 | 2833 | mtree_print_mr(mon_printf, f, ml->mr, level + 1, cur_start, |
9479c57a JK |
2834 | alias_print_queue); |
2835 | } | |
2836 | ||
a16878d2 | 2837 | QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, mrqueue, next_ml) { |
9479c57a | 2838 | g_free(ml); |
314e2987 BS |
2839 | } |
2840 | } | |
2841 | ||
57bb40c9 PX |
2842 | static void mtree_print_flatview(fprintf_function p, void *f, |
2843 | AddressSpace *as) | |
2844 | { | |
2845 | FlatView *view = address_space_get_flatview(as); | |
2846 | FlatRange *range = &view->ranges[0]; | |
2847 | MemoryRegion *mr; | |
2848 | int n = view->nr; | |
2849 | ||
2850 | if (n <= 0) { | |
2851 | p(f, MTREE_INDENT "No rendered FlatView for " | |
2852 | "address space '%s'\n", as->name); | |
2853 | flatview_unref(view); | |
2854 | return; | |
2855 | } | |
2856 | ||
2857 | while (n--) { | |
2858 | mr = range->mr; | |
377a07aa PB |
2859 | if (range->offset_in_region) { |
2860 | p(f, MTREE_INDENT TARGET_FMT_plx "-" | |
2861 | TARGET_FMT_plx " (prio %d, %s): %s @" TARGET_FMT_plx "\n", | |
2862 | int128_get64(range->addr.start), | |
2863 | int128_get64(range->addr.start) + MR_SIZE(range->addr.size), | |
2864 | mr->priority, | |
2865 | range->readonly ? "rom" : memory_region_type(mr), | |
2866 | memory_region_name(mr), | |
2867 | range->offset_in_region); | |
2868 | } else { | |
2869 | p(f, MTREE_INDENT TARGET_FMT_plx "-" | |
2870 | TARGET_FMT_plx " (prio %d, %s): %s\n", | |
2871 | int128_get64(range->addr.start), | |
2872 | int128_get64(range->addr.start) + MR_SIZE(range->addr.size), | |
2873 | mr->priority, | |
2874 | range->readonly ? "rom" : memory_region_type(mr), | |
2875 | memory_region_name(mr)); | |
2876 | } | |
57bb40c9 PX |
2877 | range++; |
2878 | } | |
2879 | ||
2880 | flatview_unref(view); | |
2881 | } | |
2882 | ||
2883 | void mtree_info(fprintf_function mon_printf, void *f, bool flatview) | |
314e2987 BS |
2884 | { |
2885 | MemoryRegionListHead ml_head; | |
2886 | MemoryRegionList *ml, *ml2; | |
0d673e36 | 2887 | AddressSpace *as; |
314e2987 | 2888 | |
57bb40c9 PX |
2889 | if (flatview) { |
2890 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
2891 | mon_printf(f, "address-space (flat view): %s\n", as->name); | |
2892 | mtree_print_flatview(mon_printf, f, as); | |
2893 | mon_printf(f, "\n"); | |
2894 | } | |
2895 | return; | |
2896 | } | |
2897 | ||
314e2987 BS |
2898 | QTAILQ_INIT(&ml_head); |
2899 | ||
0d673e36 | 2900 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
e48816aa GH |
2901 | mon_printf(f, "address-space: %s\n", as->name); |
2902 | mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head); | |
2903 | mon_printf(f, "\n"); | |
b9f9be88 BS |
2904 | } |
2905 | ||
314e2987 | 2906 | /* print aliased regions */ |
a16878d2 | 2907 | QTAILQ_FOREACH(ml, &ml_head, mrqueue) { |
e48816aa GH |
2908 | mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr)); |
2909 | mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head); | |
2910 | mon_printf(f, "\n"); | |
314e2987 BS |
2911 | } |
2912 | ||
a16878d2 | 2913 | QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) { |
88365e47 | 2914 | g_free(ml); |
314e2987 | 2915 | } |
314e2987 | 2916 | } |
b4fefef9 | 2917 | |
b08199c6 PM |
2918 | void memory_region_init_ram(MemoryRegion *mr, |
2919 | struct Object *owner, | |
2920 | const char *name, | |
2921 | uint64_t size, | |
2922 | Error **errp) | |
2923 | { | |
2924 | DeviceState *owner_dev; | |
2925 | Error *err = NULL; | |
2926 | ||
2927 | memory_region_init_ram_nomigrate(mr, owner, name, size, &err); | |
2928 | if (err) { | |
2929 | error_propagate(errp, err); | |
2930 | return; | |
2931 | } | |
2932 | /* This will assert if owner is neither NULL nor a DeviceState. | |
2933 | * We only want the owner here for the purposes of defining a | |
2934 | * unique name for migration. TODO: Ideally we should implement | |
2935 | * a naming scheme for Objects which are not DeviceStates, in | |
2936 | * which case we can relax this restriction. | |
2937 | */ | |
2938 | owner_dev = DEVICE(owner); | |
2939 | vmstate_register_ram(mr, owner_dev); | |
2940 | } | |
2941 | ||
2942 | void memory_region_init_rom(MemoryRegion *mr, | |
2943 | struct Object *owner, | |
2944 | const char *name, | |
2945 | uint64_t size, | |
2946 | Error **errp) | |
2947 | { | |
2948 | DeviceState *owner_dev; | |
2949 | Error *err = NULL; | |
2950 | ||
2951 | memory_region_init_rom_nomigrate(mr, owner, name, size, &err); | |
2952 | if (err) { | |
2953 | error_propagate(errp, err); | |
2954 | return; | |
2955 | } | |
2956 | /* This will assert if owner is neither NULL nor a DeviceState. | |
2957 | * We only want the owner here for the purposes of defining a | |
2958 | * unique name for migration. TODO: Ideally we should implement | |
2959 | * a naming scheme for Objects which are not DeviceStates, in | |
2960 | * which case we can relax this restriction. | |
2961 | */ | |
2962 | owner_dev = DEVICE(owner); | |
2963 | vmstate_register_ram(mr, owner_dev); | |
2964 | } | |
2965 | ||
2966 | void memory_region_init_rom_device(MemoryRegion *mr, | |
2967 | struct Object *owner, | |
2968 | const MemoryRegionOps *ops, | |
2969 | void *opaque, | |
2970 | const char *name, | |
2971 | uint64_t size, | |
2972 | Error **errp) | |
2973 | { | |
2974 | DeviceState *owner_dev; | |
2975 | Error *err = NULL; | |
2976 | ||
2977 | memory_region_init_rom_device_nomigrate(mr, owner, ops, opaque, | |
2978 | name, size, &err); | |
2979 | if (err) { | |
2980 | error_propagate(errp, err); | |
2981 | return; | |
2982 | } | |
2983 | /* This will assert if owner is neither NULL nor a DeviceState. | |
2984 | * We only want the owner here for the purposes of defining a | |
2985 | * unique name for migration. TODO: Ideally we should implement | |
2986 | * a naming scheme for Objects which are not DeviceStates, in | |
2987 | * which case we can relax this restriction. | |
2988 | */ | |
2989 | owner_dev = DEVICE(owner); | |
2990 | vmstate_register_ram(mr, owner_dev); | |
2991 | } | |
2992 | ||
b4fefef9 PC |
2993 | static const TypeInfo memory_region_info = { |
2994 | .parent = TYPE_OBJECT, | |
2995 | .name = TYPE_MEMORY_REGION, | |
2996 | .instance_size = sizeof(MemoryRegion), | |
2997 | .instance_init = memory_region_initfn, | |
2998 | .instance_finalize = memory_region_finalize, | |
2999 | }; | |
3000 | ||
3df9d748 AK |
3001 | static const TypeInfo iommu_memory_region_info = { |
3002 | .parent = TYPE_MEMORY_REGION, | |
3003 | .name = TYPE_IOMMU_MEMORY_REGION, | |
1221a474 | 3004 | .class_size = sizeof(IOMMUMemoryRegionClass), |
3df9d748 AK |
3005 | .instance_size = sizeof(IOMMUMemoryRegion), |
3006 | .instance_init = iommu_memory_region_initfn, | |
1221a474 | 3007 | .abstract = true, |
3df9d748 AK |
3008 | }; |
3009 | ||
b4fefef9 PC |
3010 | static void memory_register_types(void) |
3011 | { | |
3012 | type_register_static(&memory_region_info); | |
3df9d748 | 3013 | type_register_static(&iommu_memory_region_info); |
b4fefef9 PC |
3014 | } |
3015 | ||
3016 | type_init(memory_register_types) |