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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 PB |
156 | do { \ |
157 | MemoryRegionSection mrs = section_from_flat_range(fr, as); \ | |
9a54635d | 158 | MEMORY_LISTENER_CALL(as, callback, dir, &mrs, ##_args); \ |
9c1f8f44 | 159 | } while(0) |
0e0d36b4 | 160 | |
093bc2cd AK |
161 | struct CoalescedMemoryRange { |
162 | AddrRange addr; | |
163 | QTAILQ_ENTRY(CoalescedMemoryRange) link; | |
164 | }; | |
165 | ||
3e9d69e7 AK |
166 | struct MemoryRegionIoeventfd { |
167 | AddrRange addr; | |
168 | bool match_data; | |
169 | uint64_t data; | |
753d5e14 | 170 | EventNotifier *e; |
3e9d69e7 AK |
171 | }; |
172 | ||
173 | static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a, | |
174 | MemoryRegionIoeventfd b) | |
175 | { | |
08dafab4 | 176 | if (int128_lt(a.addr.start, b.addr.start)) { |
3e9d69e7 | 177 | return true; |
08dafab4 | 178 | } else if (int128_gt(a.addr.start, b.addr.start)) { |
3e9d69e7 | 179 | return false; |
08dafab4 | 180 | } else if (int128_lt(a.addr.size, b.addr.size)) { |
3e9d69e7 | 181 | return true; |
08dafab4 | 182 | } else if (int128_gt(a.addr.size, b.addr.size)) { |
3e9d69e7 AK |
183 | return false; |
184 | } else if (a.match_data < b.match_data) { | |
185 | return true; | |
186 | } else if (a.match_data > b.match_data) { | |
187 | return false; | |
188 | } else if (a.match_data) { | |
189 | if (a.data < b.data) { | |
190 | return true; | |
191 | } else if (a.data > b.data) { | |
192 | return false; | |
193 | } | |
194 | } | |
753d5e14 | 195 | if (a.e < b.e) { |
3e9d69e7 | 196 | return true; |
753d5e14 | 197 | } else if (a.e > b.e) { |
3e9d69e7 AK |
198 | return false; |
199 | } | |
200 | return false; | |
201 | } | |
202 | ||
203 | static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a, | |
204 | MemoryRegionIoeventfd b) | |
205 | { | |
206 | return !memory_region_ioeventfd_before(a, b) | |
207 | && !memory_region_ioeventfd_before(b, a); | |
208 | } | |
209 | ||
093bc2cd AK |
210 | typedef struct FlatRange FlatRange; |
211 | typedef struct FlatView FlatView; | |
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; | |
232 | }; | |
233 | ||
cc31e6e7 AK |
234 | typedef struct AddressSpaceOps AddressSpaceOps; |
235 | ||
093bc2cd AK |
236 | #define FOR_EACH_FLAT_RANGE(var, view) \ |
237 | for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var) | |
238 | ||
9c1f8f44 PB |
239 | static inline MemoryRegionSection |
240 | section_from_flat_range(FlatRange *fr, AddressSpace *as) | |
241 | { | |
242 | return (MemoryRegionSection) { | |
243 | .mr = fr->mr, | |
244 | .address_space = as, | |
245 | .offset_within_region = fr->offset_in_region, | |
246 | .size = fr->addr.size, | |
247 | .offset_within_address_space = int128_get64(fr->addr.start), | |
248 | .readonly = fr->readonly, | |
249 | }; | |
250 | } | |
251 | ||
093bc2cd AK |
252 | static bool flatrange_equal(FlatRange *a, FlatRange *b) |
253 | { | |
254 | return a->mr == b->mr | |
255 | && addrrange_equal(a->addr, b->addr) | |
d0a9b5bc | 256 | && a->offset_in_region == b->offset_in_region |
b138e654 | 257 | && a->romd_mode == b->romd_mode |
fb1cd6f9 | 258 | && a->readonly == b->readonly; |
093bc2cd AK |
259 | } |
260 | ||
cc94cd6d | 261 | static FlatView *flatview_new(void) |
093bc2cd | 262 | { |
cc94cd6d AK |
263 | FlatView *view; |
264 | ||
265 | view = g_new0(FlatView, 1); | |
856d7245 | 266 | view->ref = 1; |
cc94cd6d AK |
267 | |
268 | return view; | |
093bc2cd AK |
269 | } |
270 | ||
271 | /* Insert a range into a given position. Caller is responsible for maintaining | |
272 | * sorting order. | |
273 | */ | |
274 | static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range) | |
275 | { | |
276 | if (view->nr == view->nr_allocated) { | |
277 | view->nr_allocated = MAX(2 * view->nr, 10); | |
7267c094 | 278 | view->ranges = g_realloc(view->ranges, |
093bc2cd AK |
279 | view->nr_allocated * sizeof(*view->ranges)); |
280 | } | |
281 | memmove(view->ranges + pos + 1, view->ranges + pos, | |
282 | (view->nr - pos) * sizeof(FlatRange)); | |
283 | view->ranges[pos] = *range; | |
dfde4e6e | 284 | memory_region_ref(range->mr); |
093bc2cd AK |
285 | ++view->nr; |
286 | } | |
287 | ||
288 | static void flatview_destroy(FlatView *view) | |
289 | { | |
dfde4e6e PB |
290 | int i; |
291 | ||
292 | for (i = 0; i < view->nr; i++) { | |
293 | memory_region_unref(view->ranges[i].mr); | |
294 | } | |
7267c094 | 295 | g_free(view->ranges); |
a9a0c06d | 296 | g_free(view); |
093bc2cd AK |
297 | } |
298 | ||
447b0d0b | 299 | static bool flatview_ref(FlatView *view) |
856d7245 | 300 | { |
447b0d0b | 301 | return atomic_fetch_inc_nonzero(&view->ref) > 0; |
856d7245 PB |
302 | } |
303 | ||
304 | static void flatview_unref(FlatView *view) | |
305 | { | |
306 | if (atomic_fetch_dec(&view->ref) == 1) { | |
307 | flatview_destroy(view); | |
308 | } | |
309 | } | |
310 | ||
3d8e6bf9 AK |
311 | static bool can_merge(FlatRange *r1, FlatRange *r2) |
312 | { | |
08dafab4 | 313 | return int128_eq(addrrange_end(r1->addr), r2->addr.start) |
3d8e6bf9 | 314 | && r1->mr == r2->mr |
08dafab4 AK |
315 | && int128_eq(int128_add(int128_make64(r1->offset_in_region), |
316 | r1->addr.size), | |
317 | int128_make64(r2->offset_in_region)) | |
d0a9b5bc | 318 | && r1->dirty_log_mask == r2->dirty_log_mask |
b138e654 | 319 | && r1->romd_mode == r2->romd_mode |
fb1cd6f9 | 320 | && r1->readonly == r2->readonly; |
3d8e6bf9 AK |
321 | } |
322 | ||
8508e024 | 323 | /* Attempt to simplify a view by merging adjacent ranges */ |
3d8e6bf9 AK |
324 | static void flatview_simplify(FlatView *view) |
325 | { | |
326 | unsigned i, j; | |
327 | ||
328 | i = 0; | |
329 | while (i < view->nr) { | |
330 | j = i + 1; | |
331 | while (j < view->nr | |
332 | && can_merge(&view->ranges[j-1], &view->ranges[j])) { | |
08dafab4 | 333 | int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size); |
3d8e6bf9 AK |
334 | ++j; |
335 | } | |
336 | ++i; | |
337 | memmove(&view->ranges[i], &view->ranges[j], | |
338 | (view->nr - j) * sizeof(view->ranges[j])); | |
339 | view->nr -= j - i; | |
340 | } | |
341 | } | |
342 | ||
e7342aa3 PB |
343 | static bool memory_region_big_endian(MemoryRegion *mr) |
344 | { | |
345 | #ifdef TARGET_WORDS_BIGENDIAN | |
346 | return mr->ops->endianness != DEVICE_LITTLE_ENDIAN; | |
347 | #else | |
348 | return mr->ops->endianness == DEVICE_BIG_ENDIAN; | |
349 | #endif | |
350 | } | |
351 | ||
e11ef3d1 PB |
352 | static bool memory_region_wrong_endianness(MemoryRegion *mr) |
353 | { | |
354 | #ifdef TARGET_WORDS_BIGENDIAN | |
355 | return mr->ops->endianness == DEVICE_LITTLE_ENDIAN; | |
356 | #else | |
357 | return mr->ops->endianness == DEVICE_BIG_ENDIAN; | |
358 | #endif | |
359 | } | |
360 | ||
361 | static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size) | |
362 | { | |
363 | if (memory_region_wrong_endianness(mr)) { | |
364 | switch (size) { | |
365 | case 1: | |
366 | break; | |
367 | case 2: | |
368 | *data = bswap16(*data); | |
369 | break; | |
370 | case 4: | |
371 | *data = bswap32(*data); | |
372 | break; | |
373 | case 8: | |
374 | *data = bswap64(*data); | |
375 | break; | |
376 | default: | |
377 | abort(); | |
378 | } | |
379 | } | |
380 | } | |
381 | ||
4779dc1d HB |
382 | static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset) |
383 | { | |
384 | MemoryRegion *root; | |
385 | hwaddr abs_addr = offset; | |
386 | ||
387 | abs_addr += mr->addr; | |
388 | for (root = mr; root->container; ) { | |
389 | root = root->container; | |
390 | abs_addr += root->addr; | |
391 | } | |
392 | ||
393 | return abs_addr; | |
394 | } | |
395 | ||
5a68be94 HB |
396 | static int get_cpu_index(void) |
397 | { | |
398 | if (current_cpu) { | |
399 | return current_cpu->cpu_index; | |
400 | } | |
401 | return -1; | |
402 | } | |
403 | ||
cc05c43a PM |
404 | static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr, |
405 | hwaddr addr, | |
406 | uint64_t *value, | |
407 | unsigned size, | |
408 | unsigned shift, | |
409 | uint64_t mask, | |
410 | MemTxAttrs attrs) | |
411 | { | |
412 | uint64_t tmp; | |
413 | ||
414 | tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr); | |
23d92d68 | 415 | if (mr->subpage) { |
5a68be94 | 416 | trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
417 | } else if (mr == &io_mem_notdirty) { |
418 | /* Accesses to code which has previously been translated into a TB show | |
419 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
420 | * MemoryRegion. */ | |
421 | trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
422 | } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) { |
423 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 424 | trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 425 | } |
cc05c43a PM |
426 | *value |= (tmp & mask) << shift; |
427 | return MEMTX_OK; | |
428 | } | |
429 | ||
430 | static MemTxResult memory_region_read_accessor(MemoryRegion *mr, | |
ce5d2f33 PB |
431 | hwaddr addr, |
432 | uint64_t *value, | |
433 | unsigned size, | |
434 | unsigned shift, | |
cc05c43a PM |
435 | uint64_t mask, |
436 | MemTxAttrs attrs) | |
ce5d2f33 | 437 | { |
ce5d2f33 PB |
438 | uint64_t tmp; |
439 | ||
cc05c43a | 440 | tmp = mr->ops->read(mr->opaque, addr, size); |
23d92d68 | 441 | if (mr->subpage) { |
5a68be94 | 442 | trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
443 | } else if (mr == &io_mem_notdirty) { |
444 | /* Accesses to code which has previously been translated into a TB show | |
445 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
446 | * MemoryRegion. */ | |
447 | trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
448 | } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) { |
449 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 450 | trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 451 | } |
ce5d2f33 | 452 | *value |= (tmp & mask) << shift; |
cc05c43a | 453 | return MEMTX_OK; |
ce5d2f33 PB |
454 | } |
455 | ||
cc05c43a PM |
456 | static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr, |
457 | hwaddr addr, | |
458 | uint64_t *value, | |
459 | unsigned size, | |
460 | unsigned shift, | |
461 | uint64_t mask, | |
462 | MemTxAttrs attrs) | |
164a4dcd | 463 | { |
cc05c43a PM |
464 | uint64_t tmp = 0; |
465 | MemTxResult r; | |
164a4dcd | 466 | |
cc05c43a | 467 | r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs); |
23d92d68 | 468 | if (mr->subpage) { |
5a68be94 | 469 | trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
470 | } else if (mr == &io_mem_notdirty) { |
471 | /* Accesses to code which has previously been translated into a TB show | |
472 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
473 | * MemoryRegion. */ | |
474 | trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
475 | } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) { |
476 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 477 | trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 478 | } |
164a4dcd | 479 | *value |= (tmp & mask) << shift; |
cc05c43a | 480 | return r; |
164a4dcd AK |
481 | } |
482 | ||
cc05c43a PM |
483 | static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr, |
484 | hwaddr addr, | |
485 | uint64_t *value, | |
486 | unsigned size, | |
487 | unsigned shift, | |
488 | uint64_t mask, | |
489 | MemTxAttrs attrs) | |
ce5d2f33 | 490 | { |
ce5d2f33 PB |
491 | uint64_t tmp; |
492 | ||
493 | tmp = (*value >> shift) & mask; | |
23d92d68 | 494 | if (mr->subpage) { |
5a68be94 | 495 | trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
496 | } else if (mr == &io_mem_notdirty) { |
497 | /* Accesses to code which has previously been translated into a TB show | |
498 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
499 | * MemoryRegion. */ | |
500 | trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
501 | } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) { |
502 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 503 | trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 504 | } |
ce5d2f33 | 505 | mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp); |
cc05c43a | 506 | return MEMTX_OK; |
ce5d2f33 PB |
507 | } |
508 | ||
cc05c43a PM |
509 | static MemTxResult memory_region_write_accessor(MemoryRegion *mr, |
510 | hwaddr addr, | |
511 | uint64_t *value, | |
512 | unsigned size, | |
513 | unsigned shift, | |
514 | uint64_t mask, | |
515 | MemTxAttrs attrs) | |
164a4dcd | 516 | { |
164a4dcd AK |
517 | uint64_t tmp; |
518 | ||
519 | tmp = (*value >> shift) & mask; | |
23d92d68 | 520 | if (mr->subpage) { |
5a68be94 | 521 | trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
522 | } else if (mr == &io_mem_notdirty) { |
523 | /* Accesses to code which has previously been translated into a TB show | |
524 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
525 | * MemoryRegion. */ | |
526 | trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
527 | } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) { |
528 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 529 | trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 530 | } |
164a4dcd | 531 | mr->ops->write(mr->opaque, addr, tmp, size); |
cc05c43a | 532 | return MEMTX_OK; |
164a4dcd AK |
533 | } |
534 | ||
cc05c43a PM |
535 | static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr, |
536 | hwaddr addr, | |
537 | uint64_t *value, | |
538 | unsigned size, | |
539 | unsigned shift, | |
540 | uint64_t mask, | |
541 | MemTxAttrs attrs) | |
542 | { | |
543 | uint64_t tmp; | |
544 | ||
cc05c43a | 545 | tmp = (*value >> shift) & mask; |
23d92d68 | 546 | if (mr->subpage) { |
5a68be94 | 547 | trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size); |
f2d08942 HB |
548 | } else if (mr == &io_mem_notdirty) { |
549 | /* Accesses to code which has previously been translated into a TB show | |
550 | * up in the MMIO path, as accesses to the io_mem_notdirty | |
551 | * MemoryRegion. */ | |
552 | trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size); | |
4779dc1d HB |
553 | } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) { |
554 | hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr); | |
5a68be94 | 555 | trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size); |
23d92d68 | 556 | } |
cc05c43a PM |
557 | return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs); |
558 | } | |
559 | ||
560 | static MemTxResult access_with_adjusted_size(hwaddr addr, | |
164a4dcd AK |
561 | uint64_t *value, |
562 | unsigned size, | |
563 | unsigned access_size_min, | |
564 | unsigned access_size_max, | |
05e015f7 KF |
565 | MemTxResult (*access_fn) |
566 | (MemoryRegion *mr, | |
567 | hwaddr addr, | |
568 | uint64_t *value, | |
569 | unsigned size, | |
570 | unsigned shift, | |
571 | uint64_t mask, | |
572 | MemTxAttrs attrs), | |
cc05c43a PM |
573 | MemoryRegion *mr, |
574 | MemTxAttrs attrs) | |
164a4dcd AK |
575 | { |
576 | uint64_t access_mask; | |
577 | unsigned access_size; | |
578 | unsigned i; | |
cc05c43a | 579 | MemTxResult r = MEMTX_OK; |
164a4dcd AK |
580 | |
581 | if (!access_size_min) { | |
582 | access_size_min = 1; | |
583 | } | |
584 | if (!access_size_max) { | |
585 | access_size_max = 4; | |
586 | } | |
ce5d2f33 PB |
587 | |
588 | /* FIXME: support unaligned access? */ | |
164a4dcd AK |
589 | access_size = MAX(MIN(size, access_size_max), access_size_min); |
590 | access_mask = -1ULL >> (64 - access_size * 8); | |
e7342aa3 PB |
591 | if (memory_region_big_endian(mr)) { |
592 | for (i = 0; i < size; i += access_size) { | |
05e015f7 | 593 | r |= access_fn(mr, addr + i, value, access_size, |
cc05c43a | 594 | (size - access_size - i) * 8, access_mask, attrs); |
e7342aa3 PB |
595 | } |
596 | } else { | |
597 | for (i = 0; i < size; i += access_size) { | |
05e015f7 | 598 | r |= access_fn(mr, addr + i, value, access_size, i * 8, |
cc05c43a | 599 | access_mask, attrs); |
e7342aa3 | 600 | } |
164a4dcd | 601 | } |
cc05c43a | 602 | return r; |
164a4dcd AK |
603 | } |
604 | ||
e2177955 AK |
605 | static AddressSpace *memory_region_to_address_space(MemoryRegion *mr) |
606 | { | |
0d673e36 AK |
607 | AddressSpace *as; |
608 | ||
feca4ac1 PB |
609 | while (mr->container) { |
610 | mr = mr->container; | |
e2177955 | 611 | } |
0d673e36 AK |
612 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
613 | if (mr == as->root) { | |
614 | return as; | |
615 | } | |
e2177955 | 616 | } |
eed2bacf | 617 | return NULL; |
e2177955 AK |
618 | } |
619 | ||
093bc2cd AK |
620 | /* Render a memory region into the global view. Ranges in @view obscure |
621 | * ranges in @mr. | |
622 | */ | |
623 | static void render_memory_region(FlatView *view, | |
624 | MemoryRegion *mr, | |
08dafab4 | 625 | Int128 base, |
fb1cd6f9 AK |
626 | AddrRange clip, |
627 | bool readonly) | |
093bc2cd AK |
628 | { |
629 | MemoryRegion *subregion; | |
630 | unsigned i; | |
a8170e5e | 631 | hwaddr offset_in_region; |
08dafab4 AK |
632 | Int128 remain; |
633 | Int128 now; | |
093bc2cd AK |
634 | FlatRange fr; |
635 | AddrRange tmp; | |
636 | ||
6bba19ba AK |
637 | if (!mr->enabled) { |
638 | return; | |
639 | } | |
640 | ||
08dafab4 | 641 | int128_addto(&base, int128_make64(mr->addr)); |
fb1cd6f9 | 642 | readonly |= mr->readonly; |
093bc2cd AK |
643 | |
644 | tmp = addrrange_make(base, mr->size); | |
645 | ||
646 | if (!addrrange_intersects(tmp, clip)) { | |
647 | return; | |
648 | } | |
649 | ||
650 | clip = addrrange_intersection(tmp, clip); | |
651 | ||
652 | if (mr->alias) { | |
08dafab4 AK |
653 | int128_subfrom(&base, int128_make64(mr->alias->addr)); |
654 | int128_subfrom(&base, int128_make64(mr->alias_offset)); | |
fb1cd6f9 | 655 | render_memory_region(view, mr->alias, base, clip, readonly); |
093bc2cd AK |
656 | return; |
657 | } | |
658 | ||
659 | /* Render subregions in priority order. */ | |
660 | QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) { | |
fb1cd6f9 | 661 | render_memory_region(view, subregion, base, clip, readonly); |
093bc2cd AK |
662 | } |
663 | ||
14a3c10a | 664 | if (!mr->terminates) { |
093bc2cd AK |
665 | return; |
666 | } | |
667 | ||
08dafab4 | 668 | offset_in_region = int128_get64(int128_sub(clip.start, base)); |
093bc2cd AK |
669 | base = clip.start; |
670 | remain = clip.size; | |
671 | ||
2eb74e1a | 672 | fr.mr = mr; |
6f6a5ef3 | 673 | fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr); |
b138e654 | 674 | fr.romd_mode = mr->romd_mode; |
2eb74e1a PC |
675 | fr.readonly = readonly; |
676 | ||
093bc2cd | 677 | /* Render the region itself into any gaps left by the current view. */ |
08dafab4 AK |
678 | for (i = 0; i < view->nr && int128_nz(remain); ++i) { |
679 | if (int128_ge(base, addrrange_end(view->ranges[i].addr))) { | |
093bc2cd AK |
680 | continue; |
681 | } | |
08dafab4 AK |
682 | if (int128_lt(base, view->ranges[i].addr.start)) { |
683 | now = int128_min(remain, | |
684 | int128_sub(view->ranges[i].addr.start, base)); | |
093bc2cd AK |
685 | fr.offset_in_region = offset_in_region; |
686 | fr.addr = addrrange_make(base, now); | |
687 | flatview_insert(view, i, &fr); | |
688 | ++i; | |
08dafab4 AK |
689 | int128_addto(&base, now); |
690 | offset_in_region += int128_get64(now); | |
691 | int128_subfrom(&remain, now); | |
093bc2cd | 692 | } |
d26a8cae AK |
693 | now = int128_sub(int128_min(int128_add(base, remain), |
694 | addrrange_end(view->ranges[i].addr)), | |
695 | base); | |
696 | int128_addto(&base, now); | |
697 | offset_in_region += int128_get64(now); | |
698 | int128_subfrom(&remain, now); | |
093bc2cd | 699 | } |
08dafab4 | 700 | if (int128_nz(remain)) { |
093bc2cd AK |
701 | fr.offset_in_region = offset_in_region; |
702 | fr.addr = addrrange_make(base, remain); | |
703 | flatview_insert(view, i, &fr); | |
704 | } | |
705 | } | |
706 | ||
707 | /* Render a memory topology into a list of disjoint absolute ranges. */ | |
a9a0c06d | 708 | static FlatView *generate_memory_topology(MemoryRegion *mr) |
093bc2cd | 709 | { |
a9a0c06d | 710 | FlatView *view; |
093bc2cd | 711 | |
cc94cd6d | 712 | view = flatview_new(); |
093bc2cd | 713 | |
83f3c251 | 714 | if (mr) { |
a9a0c06d | 715 | render_memory_region(view, mr, int128_zero(), |
83f3c251 AK |
716 | addrrange_make(int128_zero(), int128_2_64()), false); |
717 | } | |
a9a0c06d | 718 | flatview_simplify(view); |
093bc2cd AK |
719 | |
720 | return view; | |
721 | } | |
722 | ||
3e9d69e7 AK |
723 | static void address_space_add_del_ioeventfds(AddressSpace *as, |
724 | MemoryRegionIoeventfd *fds_new, | |
725 | unsigned fds_new_nb, | |
726 | MemoryRegionIoeventfd *fds_old, | |
727 | unsigned fds_old_nb) | |
728 | { | |
729 | unsigned iold, inew; | |
80a1ea37 AK |
730 | MemoryRegionIoeventfd *fd; |
731 | MemoryRegionSection section; | |
3e9d69e7 AK |
732 | |
733 | /* Generate a symmetric difference of the old and new fd sets, adding | |
734 | * and deleting as necessary. | |
735 | */ | |
736 | ||
737 | iold = inew = 0; | |
738 | while (iold < fds_old_nb || inew < fds_new_nb) { | |
739 | if (iold < fds_old_nb | |
740 | && (inew == fds_new_nb | |
741 | || memory_region_ioeventfd_before(fds_old[iold], | |
742 | fds_new[inew]))) { | |
80a1ea37 AK |
743 | fd = &fds_old[iold]; |
744 | section = (MemoryRegionSection) { | |
f6790af6 | 745 | .address_space = as, |
80a1ea37 | 746 | .offset_within_address_space = int128_get64(fd->addr.start), |
052e87b0 | 747 | .size = fd->addr.size, |
80a1ea37 | 748 | }; |
9a54635d | 749 | MEMORY_LISTENER_CALL(as, eventfd_del, Forward, §ion, |
753d5e14 | 750 | fd->match_data, fd->data, fd->e); |
3e9d69e7 AK |
751 | ++iold; |
752 | } else if (inew < fds_new_nb | |
753 | && (iold == fds_old_nb | |
754 | || memory_region_ioeventfd_before(fds_new[inew], | |
755 | fds_old[iold]))) { | |
80a1ea37 AK |
756 | fd = &fds_new[inew]; |
757 | section = (MemoryRegionSection) { | |
f6790af6 | 758 | .address_space = as, |
80a1ea37 | 759 | .offset_within_address_space = int128_get64(fd->addr.start), |
052e87b0 | 760 | .size = fd->addr.size, |
80a1ea37 | 761 | }; |
9a54635d | 762 | MEMORY_LISTENER_CALL(as, eventfd_add, Reverse, §ion, |
753d5e14 | 763 | fd->match_data, fd->data, fd->e); |
3e9d69e7 AK |
764 | ++inew; |
765 | } else { | |
766 | ++iold; | |
767 | ++inew; | |
768 | } | |
769 | } | |
770 | } | |
771 | ||
856d7245 PB |
772 | static FlatView *address_space_get_flatview(AddressSpace *as) |
773 | { | |
774 | FlatView *view; | |
775 | ||
374f2981 | 776 | rcu_read_lock(); |
447b0d0b PB |
777 | do { |
778 | view = atomic_rcu_read(&as->current_map); | |
779 | /* If somebody has replaced as->current_map concurrently, | |
780 | * flatview_ref returns false. | |
781 | */ | |
782 | } while (!flatview_ref(view)); | |
374f2981 | 783 | rcu_read_unlock(); |
856d7245 PB |
784 | return view; |
785 | } | |
786 | ||
3e9d69e7 AK |
787 | static void address_space_update_ioeventfds(AddressSpace *as) |
788 | { | |
99e86347 | 789 | FlatView *view; |
3e9d69e7 AK |
790 | FlatRange *fr; |
791 | unsigned ioeventfd_nb = 0; | |
792 | MemoryRegionIoeventfd *ioeventfds = NULL; | |
793 | AddrRange tmp; | |
794 | unsigned i; | |
795 | ||
856d7245 | 796 | view = address_space_get_flatview(as); |
99e86347 | 797 | FOR_EACH_FLAT_RANGE(fr, view) { |
3e9d69e7 AK |
798 | for (i = 0; i < fr->mr->ioeventfd_nb; ++i) { |
799 | tmp = addrrange_shift(fr->mr->ioeventfds[i].addr, | |
08dafab4 AK |
800 | int128_sub(fr->addr.start, |
801 | int128_make64(fr->offset_in_region))); | |
3e9d69e7 AK |
802 | if (addrrange_intersects(fr->addr, tmp)) { |
803 | ++ioeventfd_nb; | |
7267c094 | 804 | ioeventfds = g_realloc(ioeventfds, |
3e9d69e7 AK |
805 | ioeventfd_nb * sizeof(*ioeventfds)); |
806 | ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i]; | |
807 | ioeventfds[ioeventfd_nb-1].addr = tmp; | |
808 | } | |
809 | } | |
810 | } | |
811 | ||
812 | address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb, | |
813 | as->ioeventfds, as->ioeventfd_nb); | |
814 | ||
7267c094 | 815 | g_free(as->ioeventfds); |
3e9d69e7 AK |
816 | as->ioeventfds = ioeventfds; |
817 | as->ioeventfd_nb = ioeventfd_nb; | |
856d7245 | 818 | flatview_unref(view); |
3e9d69e7 AK |
819 | } |
820 | ||
b8af1afb | 821 | static void address_space_update_topology_pass(AddressSpace *as, |
a9a0c06d PB |
822 | const FlatView *old_view, |
823 | const FlatView *new_view, | |
b8af1afb | 824 | bool adding) |
093bc2cd | 825 | { |
093bc2cd AK |
826 | unsigned iold, inew; |
827 | FlatRange *frold, *frnew; | |
093bc2cd AK |
828 | |
829 | /* Generate a symmetric difference of the old and new memory maps. | |
830 | * Kill ranges in the old map, and instantiate ranges in the new map. | |
831 | */ | |
832 | iold = inew = 0; | |
a9a0c06d PB |
833 | while (iold < old_view->nr || inew < new_view->nr) { |
834 | if (iold < old_view->nr) { | |
835 | frold = &old_view->ranges[iold]; | |
093bc2cd AK |
836 | } else { |
837 | frold = NULL; | |
838 | } | |
a9a0c06d PB |
839 | if (inew < new_view->nr) { |
840 | frnew = &new_view->ranges[inew]; | |
093bc2cd AK |
841 | } else { |
842 | frnew = NULL; | |
843 | } | |
844 | ||
845 | if (frold | |
846 | && (!frnew | |
08dafab4 AK |
847 | || int128_lt(frold->addr.start, frnew->addr.start) |
848 | || (int128_eq(frold->addr.start, frnew->addr.start) | |
093bc2cd | 849 | && !flatrange_equal(frold, frnew)))) { |
41a6e477 | 850 | /* In old but not in new, or in both but attributes changed. */ |
093bc2cd | 851 | |
b8af1afb | 852 | if (!adding) { |
72e22d2f | 853 | MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del); |
b8af1afb AK |
854 | } |
855 | ||
093bc2cd AK |
856 | ++iold; |
857 | } else if (frold && frnew && flatrange_equal(frold, frnew)) { | |
41a6e477 | 858 | /* In both and unchanged (except logging may have changed) */ |
093bc2cd | 859 | |
b8af1afb | 860 | if (adding) { |
50c1e149 | 861 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop); |
b2dfd71c PB |
862 | if (frnew->dirty_log_mask & ~frold->dirty_log_mask) { |
863 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start, | |
864 | frold->dirty_log_mask, | |
865 | frnew->dirty_log_mask); | |
866 | } | |
867 | if (frold->dirty_log_mask & ~frnew->dirty_log_mask) { | |
868 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop, | |
869 | frold->dirty_log_mask, | |
870 | frnew->dirty_log_mask); | |
b8af1afb | 871 | } |
5a583347 AK |
872 | } |
873 | ||
093bc2cd AK |
874 | ++iold; |
875 | ++inew; | |
093bc2cd AK |
876 | } else { |
877 | /* In new */ | |
878 | ||
b8af1afb | 879 | if (adding) { |
72e22d2f | 880 | MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add); |
b8af1afb AK |
881 | } |
882 | ||
093bc2cd AK |
883 | ++inew; |
884 | } | |
885 | } | |
b8af1afb AK |
886 | } |
887 | ||
b8af1afb AK |
888 | static void address_space_update_topology(AddressSpace *as) |
889 | { | |
856d7245 | 890 | FlatView *old_view = address_space_get_flatview(as); |
a9a0c06d | 891 | FlatView *new_view = generate_memory_topology(as->root); |
9a62e24f | 892 | int i; |
b8af1afb | 893 | |
9a62e24f AK |
894 | mem_begin(as); |
895 | for (i = 0; i < new_view->nr; i++) { | |
896 | MemoryRegionSection mrs = | |
897 | section_from_flat_range(&new_view->ranges[i], as); | |
898 | mem_add(as, &mrs); | |
899 | } | |
900 | mem_commit(as); | |
901 | ||
902 | if (!QTAILQ_EMPTY(&as->listeners)) { | |
903 | address_space_update_topology_pass(as, old_view, new_view, false); | |
904 | address_space_update_topology_pass(as, old_view, new_view, true); | |
905 | } | |
b8af1afb | 906 | |
374f2981 PB |
907 | /* Writes are protected by the BQL. */ |
908 | atomic_rcu_set(&as->current_map, new_view); | |
909 | call_rcu(old_view, flatview_unref, rcu); | |
856d7245 PB |
910 | |
911 | /* Note that all the old MemoryRegions are still alive up to this | |
912 | * point. This relieves most MemoryListeners from the need to | |
913 | * ref/unref the MemoryRegions they get---unless they use them | |
914 | * outside the iothread mutex, in which case precise reference | |
915 | * counting is necessary. | |
916 | */ | |
917 | flatview_unref(old_view); | |
918 | ||
3e9d69e7 | 919 | address_space_update_ioeventfds(as); |
093bc2cd AK |
920 | } |
921 | ||
4ef4db86 AK |
922 | void memory_region_transaction_begin(void) |
923 | { | |
bb880ded | 924 | qemu_flush_coalesced_mmio_buffer(); |
4ef4db86 AK |
925 | ++memory_region_transaction_depth; |
926 | } | |
927 | ||
928 | void memory_region_transaction_commit(void) | |
929 | { | |
0d673e36 AK |
930 | AddressSpace *as; |
931 | ||
4ef4db86 | 932 | assert(memory_region_transaction_depth); |
8d04fb55 JK |
933 | assert(qemu_mutex_iothread_locked()); |
934 | ||
4ef4db86 | 935 | --memory_region_transaction_depth; |
4dc56152 GA |
936 | if (!memory_region_transaction_depth) { |
937 | if (memory_region_update_pending) { | |
938 | MEMORY_LISTENER_CALL_GLOBAL(begin, Forward); | |
02e2b95f | 939 | |
4dc56152 GA |
940 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
941 | address_space_update_topology(as); | |
942 | } | |
ade9c1aa | 943 | memory_region_update_pending = false; |
4dc56152 GA |
944 | MEMORY_LISTENER_CALL_GLOBAL(commit, Forward); |
945 | } else if (ioeventfd_update_pending) { | |
946 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
947 | address_space_update_ioeventfds(as); | |
948 | } | |
ade9c1aa | 949 | ioeventfd_update_pending = false; |
4dc56152 | 950 | } |
4dc56152 | 951 | } |
4ef4db86 AK |
952 | } |
953 | ||
545e92e0 AK |
954 | static void memory_region_destructor_none(MemoryRegion *mr) |
955 | { | |
956 | } | |
957 | ||
958 | static void memory_region_destructor_ram(MemoryRegion *mr) | |
959 | { | |
f1060c55 | 960 | qemu_ram_free(mr->ram_block); |
545e92e0 AK |
961 | } |
962 | ||
b4fefef9 PC |
963 | static bool memory_region_need_escape(char c) |
964 | { | |
965 | return c == '/' || c == '[' || c == '\\' || c == ']'; | |
966 | } | |
967 | ||
968 | static char *memory_region_escape_name(const char *name) | |
969 | { | |
970 | const char *p; | |
971 | char *escaped, *q; | |
972 | uint8_t c; | |
973 | size_t bytes = 0; | |
974 | ||
975 | for (p = name; *p; p++) { | |
976 | bytes += memory_region_need_escape(*p) ? 4 : 1; | |
977 | } | |
978 | if (bytes == p - name) { | |
979 | return g_memdup(name, bytes + 1); | |
980 | } | |
981 | ||
982 | escaped = g_malloc(bytes + 1); | |
983 | for (p = name, q = escaped; *p; p++) { | |
984 | c = *p; | |
985 | if (unlikely(memory_region_need_escape(c))) { | |
986 | *q++ = '\\'; | |
987 | *q++ = 'x'; | |
988 | *q++ = "0123456789abcdef"[c >> 4]; | |
989 | c = "0123456789abcdef"[c & 15]; | |
990 | } | |
991 | *q++ = c; | |
992 | } | |
993 | *q = 0; | |
994 | return escaped; | |
995 | } | |
996 | ||
3df9d748 AK |
997 | static void memory_region_do_init(MemoryRegion *mr, |
998 | Object *owner, | |
999 | const char *name, | |
1000 | uint64_t size) | |
093bc2cd | 1001 | { |
08dafab4 AK |
1002 | mr->size = int128_make64(size); |
1003 | if (size == UINT64_MAX) { | |
1004 | mr->size = int128_2_64(); | |
1005 | } | |
302fa283 | 1006 | mr->name = g_strdup(name); |
612263cf | 1007 | mr->owner = owner; |
58eaa217 | 1008 | mr->ram_block = NULL; |
b4fefef9 PC |
1009 | |
1010 | if (name) { | |
843ef73a PC |
1011 | char *escaped_name = memory_region_escape_name(name); |
1012 | char *name_array = g_strdup_printf("%s[*]", escaped_name); | |
612263cf PB |
1013 | |
1014 | if (!owner) { | |
1015 | owner = container_get(qdev_get_machine(), "/unattached"); | |
1016 | } | |
1017 | ||
843ef73a | 1018 | object_property_add_child(owner, name_array, OBJECT(mr), &error_abort); |
b4fefef9 | 1019 | object_unref(OBJECT(mr)); |
843ef73a PC |
1020 | g_free(name_array); |
1021 | g_free(escaped_name); | |
b4fefef9 PC |
1022 | } |
1023 | } | |
1024 | ||
3df9d748 AK |
1025 | void memory_region_init(MemoryRegion *mr, |
1026 | Object *owner, | |
1027 | const char *name, | |
1028 | uint64_t size) | |
1029 | { | |
1030 | object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION); | |
1031 | memory_region_do_init(mr, owner, name, size); | |
1032 | } | |
1033 | ||
d7bce999 EB |
1034 | static void memory_region_get_addr(Object *obj, Visitor *v, const char *name, |
1035 | void *opaque, Error **errp) | |
409ddd01 PC |
1036 | { |
1037 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1038 | uint64_t value = mr->addr; | |
1039 | ||
51e72bc1 | 1040 | visit_type_uint64(v, name, &value, errp); |
409ddd01 PC |
1041 | } |
1042 | ||
d7bce999 EB |
1043 | static void memory_region_get_container(Object *obj, Visitor *v, |
1044 | const char *name, void *opaque, | |
1045 | Error **errp) | |
409ddd01 PC |
1046 | { |
1047 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1048 | gchar *path = (gchar *)""; | |
1049 | ||
1050 | if (mr->container) { | |
1051 | path = object_get_canonical_path(OBJECT(mr->container)); | |
1052 | } | |
51e72bc1 | 1053 | visit_type_str(v, name, &path, errp); |
409ddd01 PC |
1054 | if (mr->container) { |
1055 | g_free(path); | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | static Object *memory_region_resolve_container(Object *obj, void *opaque, | |
1060 | const char *part) | |
1061 | { | |
1062 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1063 | ||
1064 | return OBJECT(mr->container); | |
1065 | } | |
1066 | ||
d7bce999 EB |
1067 | static void memory_region_get_priority(Object *obj, Visitor *v, |
1068 | const char *name, void *opaque, | |
1069 | Error **errp) | |
d33382da PC |
1070 | { |
1071 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1072 | int32_t value = mr->priority; | |
1073 | ||
51e72bc1 | 1074 | visit_type_int32(v, name, &value, errp); |
d33382da PC |
1075 | } |
1076 | ||
d7bce999 EB |
1077 | static void memory_region_get_size(Object *obj, Visitor *v, const char *name, |
1078 | void *opaque, Error **errp) | |
52aef7bb PC |
1079 | { |
1080 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1081 | uint64_t value = memory_region_size(mr); | |
1082 | ||
51e72bc1 | 1083 | visit_type_uint64(v, name, &value, errp); |
52aef7bb PC |
1084 | } |
1085 | ||
b4fefef9 PC |
1086 | static void memory_region_initfn(Object *obj) |
1087 | { | |
1088 | MemoryRegion *mr = MEMORY_REGION(obj); | |
409ddd01 | 1089 | ObjectProperty *op; |
b4fefef9 PC |
1090 | |
1091 | mr->ops = &unassigned_mem_ops; | |
6bba19ba | 1092 | mr->enabled = true; |
5f9a5ea1 | 1093 | mr->romd_mode = true; |
196ea131 | 1094 | mr->global_locking = true; |
545e92e0 | 1095 | mr->destructor = memory_region_destructor_none; |
093bc2cd | 1096 | QTAILQ_INIT(&mr->subregions); |
093bc2cd | 1097 | QTAILQ_INIT(&mr->coalesced); |
409ddd01 PC |
1098 | |
1099 | op = object_property_add(OBJECT(mr), "container", | |
1100 | "link<" TYPE_MEMORY_REGION ">", | |
1101 | memory_region_get_container, | |
1102 | NULL, /* memory_region_set_container */ | |
1103 | NULL, NULL, &error_abort); | |
1104 | op->resolve = memory_region_resolve_container; | |
1105 | ||
1106 | object_property_add(OBJECT(mr), "addr", "uint64", | |
1107 | memory_region_get_addr, | |
1108 | NULL, /* memory_region_set_addr */ | |
1109 | NULL, NULL, &error_abort); | |
d33382da PC |
1110 | object_property_add(OBJECT(mr), "priority", "uint32", |
1111 | memory_region_get_priority, | |
1112 | NULL, /* memory_region_set_priority */ | |
1113 | NULL, NULL, &error_abort); | |
52aef7bb PC |
1114 | object_property_add(OBJECT(mr), "size", "uint64", |
1115 | memory_region_get_size, | |
1116 | NULL, /* memory_region_set_size, */ | |
1117 | NULL, NULL, &error_abort); | |
093bc2cd AK |
1118 | } |
1119 | ||
3df9d748 AK |
1120 | static void iommu_memory_region_initfn(Object *obj) |
1121 | { | |
1122 | MemoryRegion *mr = MEMORY_REGION(obj); | |
1123 | ||
1124 | mr->is_iommu = true; | |
1125 | } | |
1126 | ||
b018ddf6 PB |
1127 | static uint64_t unassigned_mem_read(void *opaque, hwaddr addr, |
1128 | unsigned size) | |
1129 | { | |
1130 | #ifdef DEBUG_UNASSIGNED | |
1131 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
1132 | #endif | |
4917cf44 AF |
1133 | if (current_cpu != NULL) { |
1134 | cpu_unassigned_access(current_cpu, addr, false, false, 0, size); | |
c658b94f | 1135 | } |
68a7439a | 1136 | return 0; |
b018ddf6 PB |
1137 | } |
1138 | ||
1139 | static void unassigned_mem_write(void *opaque, hwaddr addr, | |
1140 | uint64_t val, unsigned size) | |
1141 | { | |
1142 | #ifdef DEBUG_UNASSIGNED | |
1143 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); | |
1144 | #endif | |
4917cf44 AF |
1145 | if (current_cpu != NULL) { |
1146 | cpu_unassigned_access(current_cpu, addr, true, false, 0, size); | |
c658b94f | 1147 | } |
b018ddf6 PB |
1148 | } |
1149 | ||
d197063f PB |
1150 | static bool unassigned_mem_accepts(void *opaque, hwaddr addr, |
1151 | unsigned size, bool is_write) | |
1152 | { | |
1153 | return false; | |
1154 | } | |
1155 | ||
1156 | const MemoryRegionOps unassigned_mem_ops = { | |
1157 | .valid.accepts = unassigned_mem_accepts, | |
1158 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1159 | }; | |
1160 | ||
4a2e242b AW |
1161 | static uint64_t memory_region_ram_device_read(void *opaque, |
1162 | hwaddr addr, unsigned size) | |
1163 | { | |
1164 | MemoryRegion *mr = opaque; | |
1165 | uint64_t data = (uint64_t)~0; | |
1166 | ||
1167 | switch (size) { | |
1168 | case 1: | |
1169 | data = *(uint8_t *)(mr->ram_block->host + addr); | |
1170 | break; | |
1171 | case 2: | |
1172 | data = *(uint16_t *)(mr->ram_block->host + addr); | |
1173 | break; | |
1174 | case 4: | |
1175 | data = *(uint32_t *)(mr->ram_block->host + addr); | |
1176 | break; | |
1177 | case 8: | |
1178 | data = *(uint64_t *)(mr->ram_block->host + addr); | |
1179 | break; | |
1180 | } | |
1181 | ||
1182 | trace_memory_region_ram_device_read(get_cpu_index(), mr, addr, data, size); | |
1183 | ||
1184 | return data; | |
1185 | } | |
1186 | ||
1187 | static void memory_region_ram_device_write(void *opaque, hwaddr addr, | |
1188 | uint64_t data, unsigned size) | |
1189 | { | |
1190 | MemoryRegion *mr = opaque; | |
1191 | ||
1192 | trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size); | |
1193 | ||
1194 | switch (size) { | |
1195 | case 1: | |
1196 | *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data; | |
1197 | break; | |
1198 | case 2: | |
1199 | *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data; | |
1200 | break; | |
1201 | case 4: | |
1202 | *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data; | |
1203 | break; | |
1204 | case 8: | |
1205 | *(uint64_t *)(mr->ram_block->host + addr) = data; | |
1206 | break; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | static const MemoryRegionOps ram_device_mem_ops = { | |
1211 | .read = memory_region_ram_device_read, | |
1212 | .write = memory_region_ram_device_write, | |
c99a29e7 | 1213 | .endianness = DEVICE_HOST_ENDIAN, |
4a2e242b AW |
1214 | .valid = { |
1215 | .min_access_size = 1, | |
1216 | .max_access_size = 8, | |
1217 | .unaligned = true, | |
1218 | }, | |
1219 | .impl = { | |
1220 | .min_access_size = 1, | |
1221 | .max_access_size = 8, | |
1222 | .unaligned = true, | |
1223 | }, | |
1224 | }; | |
1225 | ||
d2702032 PB |
1226 | bool memory_region_access_valid(MemoryRegion *mr, |
1227 | hwaddr addr, | |
1228 | unsigned size, | |
1229 | bool is_write) | |
093bc2cd | 1230 | { |
a014ed07 PB |
1231 | int access_size_min, access_size_max; |
1232 | int access_size, i; | |
897fa7cf | 1233 | |
093bc2cd AK |
1234 | if (!mr->ops->valid.unaligned && (addr & (size - 1))) { |
1235 | return false; | |
1236 | } | |
1237 | ||
a014ed07 | 1238 | if (!mr->ops->valid.accepts) { |
093bc2cd AK |
1239 | return true; |
1240 | } | |
1241 | ||
a014ed07 PB |
1242 | access_size_min = mr->ops->valid.min_access_size; |
1243 | if (!mr->ops->valid.min_access_size) { | |
1244 | access_size_min = 1; | |
1245 | } | |
1246 | ||
1247 | access_size_max = mr->ops->valid.max_access_size; | |
1248 | if (!mr->ops->valid.max_access_size) { | |
1249 | access_size_max = 4; | |
1250 | } | |
1251 | ||
1252 | access_size = MAX(MIN(size, access_size_max), access_size_min); | |
1253 | for (i = 0; i < size; i += access_size) { | |
1254 | if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size, | |
1255 | is_write)) { | |
1256 | return false; | |
1257 | } | |
093bc2cd | 1258 | } |
a014ed07 | 1259 | |
093bc2cd AK |
1260 | return true; |
1261 | } | |
1262 | ||
cc05c43a PM |
1263 | static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr, |
1264 | hwaddr addr, | |
1265 | uint64_t *pval, | |
1266 | unsigned size, | |
1267 | MemTxAttrs attrs) | |
093bc2cd | 1268 | { |
cc05c43a | 1269 | *pval = 0; |
093bc2cd | 1270 | |
ce5d2f33 | 1271 | if (mr->ops->read) { |
cc05c43a PM |
1272 | return access_with_adjusted_size(addr, pval, size, |
1273 | mr->ops->impl.min_access_size, | |
1274 | mr->ops->impl.max_access_size, | |
1275 | memory_region_read_accessor, | |
1276 | mr, attrs); | |
1277 | } else if (mr->ops->read_with_attrs) { | |
1278 | return access_with_adjusted_size(addr, pval, size, | |
1279 | mr->ops->impl.min_access_size, | |
1280 | mr->ops->impl.max_access_size, | |
1281 | memory_region_read_with_attrs_accessor, | |
1282 | mr, attrs); | |
ce5d2f33 | 1283 | } else { |
cc05c43a PM |
1284 | return access_with_adjusted_size(addr, pval, size, 1, 4, |
1285 | memory_region_oldmmio_read_accessor, | |
1286 | mr, attrs); | |
74901c3b | 1287 | } |
093bc2cd AK |
1288 | } |
1289 | ||
3b643495 PM |
1290 | MemTxResult memory_region_dispatch_read(MemoryRegion *mr, |
1291 | hwaddr addr, | |
1292 | uint64_t *pval, | |
1293 | unsigned size, | |
1294 | MemTxAttrs attrs) | |
a621f38d | 1295 | { |
cc05c43a PM |
1296 | MemTxResult r; |
1297 | ||
791af8c8 PB |
1298 | if (!memory_region_access_valid(mr, addr, size, false)) { |
1299 | *pval = unassigned_mem_read(mr, addr, size); | |
cc05c43a | 1300 | return MEMTX_DECODE_ERROR; |
791af8c8 | 1301 | } |
a621f38d | 1302 | |
cc05c43a | 1303 | r = memory_region_dispatch_read1(mr, addr, pval, size, attrs); |
791af8c8 | 1304 | adjust_endianness(mr, pval, size); |
cc05c43a | 1305 | return r; |
a621f38d | 1306 | } |
093bc2cd | 1307 | |
8c56c1a5 PF |
1308 | /* Return true if an eventfd was signalled */ |
1309 | static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr, | |
1310 | hwaddr addr, | |
1311 | uint64_t data, | |
1312 | unsigned size, | |
1313 | MemTxAttrs attrs) | |
1314 | { | |
1315 | MemoryRegionIoeventfd ioeventfd = { | |
1316 | .addr = addrrange_make(int128_make64(addr), int128_make64(size)), | |
1317 | .data = data, | |
1318 | }; | |
1319 | unsigned i; | |
1320 | ||
1321 | for (i = 0; i < mr->ioeventfd_nb; i++) { | |
1322 | ioeventfd.match_data = mr->ioeventfds[i].match_data; | |
1323 | ioeventfd.e = mr->ioeventfds[i].e; | |
1324 | ||
1325 | if (memory_region_ioeventfd_equal(ioeventfd, mr->ioeventfds[i])) { | |
1326 | event_notifier_set(ioeventfd.e); | |
1327 | return true; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | return false; | |
1332 | } | |
1333 | ||
3b643495 PM |
1334 | MemTxResult memory_region_dispatch_write(MemoryRegion *mr, |
1335 | hwaddr addr, | |
1336 | uint64_t data, | |
1337 | unsigned size, | |
1338 | MemTxAttrs attrs) | |
a621f38d | 1339 | { |
897fa7cf | 1340 | if (!memory_region_access_valid(mr, addr, size, true)) { |
b018ddf6 | 1341 | unassigned_mem_write(mr, addr, data, size); |
cc05c43a | 1342 | return MEMTX_DECODE_ERROR; |
093bc2cd AK |
1343 | } |
1344 | ||
a621f38d AK |
1345 | adjust_endianness(mr, &data, size); |
1346 | ||
8c56c1a5 PF |
1347 | if ((!kvm_eventfds_enabled()) && |
1348 | memory_region_dispatch_write_eventfds(mr, addr, data, size, attrs)) { | |
1349 | return MEMTX_OK; | |
1350 | } | |
1351 | ||
ce5d2f33 | 1352 | if (mr->ops->write) { |
cc05c43a PM |
1353 | return access_with_adjusted_size(addr, &data, size, |
1354 | mr->ops->impl.min_access_size, | |
1355 | mr->ops->impl.max_access_size, | |
1356 | memory_region_write_accessor, mr, | |
1357 | attrs); | |
1358 | } else if (mr->ops->write_with_attrs) { | |
1359 | return | |
1360 | access_with_adjusted_size(addr, &data, size, | |
1361 | mr->ops->impl.min_access_size, | |
1362 | mr->ops->impl.max_access_size, | |
1363 | memory_region_write_with_attrs_accessor, | |
1364 | mr, attrs); | |
ce5d2f33 | 1365 | } else { |
cc05c43a PM |
1366 | return access_with_adjusted_size(addr, &data, size, 1, 4, |
1367 | memory_region_oldmmio_write_accessor, | |
1368 | mr, attrs); | |
74901c3b | 1369 | } |
093bc2cd AK |
1370 | } |
1371 | ||
093bc2cd | 1372 | void memory_region_init_io(MemoryRegion *mr, |
2c9b15ca | 1373 | Object *owner, |
093bc2cd AK |
1374 | const MemoryRegionOps *ops, |
1375 | void *opaque, | |
1376 | const char *name, | |
1377 | uint64_t size) | |
1378 | { | |
2c9b15ca | 1379 | memory_region_init(mr, owner, name, size); |
6d6d2abf | 1380 | mr->ops = ops ? ops : &unassigned_mem_ops; |
093bc2cd | 1381 | mr->opaque = opaque; |
14a3c10a | 1382 | mr->terminates = true; |
093bc2cd AK |
1383 | } |
1384 | ||
1cfe48c1 PM |
1385 | void memory_region_init_ram_nomigrate(MemoryRegion *mr, |
1386 | Object *owner, | |
1387 | const char *name, | |
1388 | uint64_t size, | |
1389 | Error **errp) | |
093bc2cd | 1390 | { |
2c9b15ca | 1391 | memory_region_init(mr, owner, name, size); |
8ea9252a | 1392 | mr->ram = true; |
14a3c10a | 1393 | mr->terminates = true; |
545e92e0 | 1394 | mr->destructor = memory_region_destructor_ram; |
8e41fb63 | 1395 | mr->ram_block = qemu_ram_alloc(size, mr, errp); |
677e7805 | 1396 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
0b183fc8 PB |
1397 | } |
1398 | ||
60786ef3 MT |
1399 | void memory_region_init_resizeable_ram(MemoryRegion *mr, |
1400 | Object *owner, | |
1401 | const char *name, | |
1402 | uint64_t size, | |
1403 | uint64_t max_size, | |
1404 | void (*resized)(const char*, | |
1405 | uint64_t length, | |
1406 | void *host), | |
1407 | Error **errp) | |
1408 | { | |
1409 | memory_region_init(mr, owner, name, size); | |
1410 | mr->ram = true; | |
1411 | mr->terminates = true; | |
1412 | mr->destructor = memory_region_destructor_ram; | |
8e41fb63 FZ |
1413 | mr->ram_block = qemu_ram_alloc_resizeable(size, max_size, resized, |
1414 | mr, errp); | |
677e7805 | 1415 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
60786ef3 MT |
1416 | } |
1417 | ||
0b183fc8 PB |
1418 | #ifdef __linux__ |
1419 | void memory_region_init_ram_from_file(MemoryRegion *mr, | |
1420 | struct Object *owner, | |
1421 | const char *name, | |
1422 | uint64_t size, | |
dbcb8981 | 1423 | bool share, |
7f56e740 PB |
1424 | const char *path, |
1425 | Error **errp) | |
0b183fc8 PB |
1426 | { |
1427 | memory_region_init(mr, owner, name, size); | |
1428 | mr->ram = true; | |
1429 | mr->terminates = true; | |
1430 | mr->destructor = memory_region_destructor_ram; | |
8e41fb63 | 1431 | mr->ram_block = qemu_ram_alloc_from_file(size, mr, share, path, errp); |
677e7805 | 1432 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
093bc2cd | 1433 | } |
fea617c5 MAL |
1434 | |
1435 | void memory_region_init_ram_from_fd(MemoryRegion *mr, | |
1436 | struct Object *owner, | |
1437 | const char *name, | |
1438 | uint64_t size, | |
1439 | bool share, | |
1440 | int fd, | |
1441 | Error **errp) | |
1442 | { | |
1443 | memory_region_init(mr, owner, name, size); | |
1444 | mr->ram = true; | |
1445 | mr->terminates = true; | |
1446 | mr->destructor = memory_region_destructor_ram; | |
1447 | mr->ram_block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp); | |
1448 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; | |
1449 | } | |
0b183fc8 | 1450 | #endif |
093bc2cd AK |
1451 | |
1452 | void memory_region_init_ram_ptr(MemoryRegion *mr, | |
2c9b15ca | 1453 | Object *owner, |
093bc2cd AK |
1454 | const char *name, |
1455 | uint64_t size, | |
1456 | void *ptr) | |
1457 | { | |
2c9b15ca | 1458 | memory_region_init(mr, owner, name, size); |
8ea9252a | 1459 | mr->ram = true; |
14a3c10a | 1460 | mr->terminates = true; |
fc3e7665 | 1461 | mr->destructor = memory_region_destructor_ram; |
677e7805 | 1462 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; |
ef701d7b HT |
1463 | |
1464 | /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */ | |
1465 | assert(ptr != NULL); | |
8e41fb63 | 1466 | mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal); |
093bc2cd AK |
1467 | } |
1468 | ||
21e00fa5 AW |
1469 | void memory_region_init_ram_device_ptr(MemoryRegion *mr, |
1470 | Object *owner, | |
1471 | const char *name, | |
1472 | uint64_t size, | |
1473 | void *ptr) | |
e4dc3f59 | 1474 | { |
21e00fa5 AW |
1475 | memory_region_init_ram_ptr(mr, owner, name, size, ptr); |
1476 | mr->ram_device = true; | |
4a2e242b AW |
1477 | mr->ops = &ram_device_mem_ops; |
1478 | mr->opaque = mr; | |
e4dc3f59 ND |
1479 | } |
1480 | ||
093bc2cd | 1481 | void memory_region_init_alias(MemoryRegion *mr, |
2c9b15ca | 1482 | Object *owner, |
093bc2cd AK |
1483 | const char *name, |
1484 | MemoryRegion *orig, | |
a8170e5e | 1485 | hwaddr offset, |
093bc2cd AK |
1486 | uint64_t size) |
1487 | { | |
2c9b15ca | 1488 | memory_region_init(mr, owner, name, size); |
093bc2cd AK |
1489 | mr->alias = orig; |
1490 | mr->alias_offset = offset; | |
1491 | } | |
1492 | ||
b59821a9 PM |
1493 | void memory_region_init_rom_nomigrate(MemoryRegion *mr, |
1494 | struct Object *owner, | |
1495 | const char *name, | |
1496 | uint64_t size, | |
1497 | Error **errp) | |
a1777f7f PM |
1498 | { |
1499 | memory_region_init(mr, owner, name, size); | |
1500 | mr->ram = true; | |
1501 | mr->readonly = true; | |
1502 | mr->terminates = true; | |
1503 | mr->destructor = memory_region_destructor_ram; | |
1504 | mr->ram_block = qemu_ram_alloc(size, mr, errp); | |
1505 | mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0; | |
1506 | } | |
1507 | ||
b59821a9 PM |
1508 | void memory_region_init_rom_device_nomigrate(MemoryRegion *mr, |
1509 | Object *owner, | |
1510 | const MemoryRegionOps *ops, | |
1511 | void *opaque, | |
1512 | const char *name, | |
1513 | uint64_t size, | |
1514 | Error **errp) | |
d0a9b5bc | 1515 | { |
39e0b03d | 1516 | assert(ops); |
2c9b15ca | 1517 | memory_region_init(mr, owner, name, size); |
7bc2b9cd | 1518 | mr->ops = ops; |
75f5941c | 1519 | mr->opaque = opaque; |
d0a9b5bc | 1520 | mr->terminates = true; |
75c578dc | 1521 | mr->rom_device = true; |
58268c8d | 1522 | mr->destructor = memory_region_destructor_ram; |
8e41fb63 | 1523 | mr->ram_block = qemu_ram_alloc(size, mr, errp); |
d0a9b5bc AK |
1524 | } |
1525 | ||
1221a474 AK |
1526 | void memory_region_init_iommu(void *_iommu_mr, |
1527 | size_t instance_size, | |
1528 | const char *mrtypename, | |
2c9b15ca | 1529 | Object *owner, |
30951157 AK |
1530 | const char *name, |
1531 | uint64_t size) | |
1532 | { | |
1221a474 | 1533 | struct IOMMUMemoryRegion *iommu_mr; |
3df9d748 AK |
1534 | struct MemoryRegion *mr; |
1535 | ||
1221a474 AK |
1536 | object_initialize(_iommu_mr, instance_size, mrtypename); |
1537 | mr = MEMORY_REGION(_iommu_mr); | |
3df9d748 AK |
1538 | memory_region_do_init(mr, owner, name, size); |
1539 | iommu_mr = IOMMU_MEMORY_REGION(mr); | |
30951157 | 1540 | mr->terminates = true; /* then re-forwards */ |
3df9d748 AK |
1541 | QLIST_INIT(&iommu_mr->iommu_notify); |
1542 | iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE; | |
30951157 AK |
1543 | } |
1544 | ||
b4fefef9 | 1545 | static void memory_region_finalize(Object *obj) |
093bc2cd | 1546 | { |
b4fefef9 PC |
1547 | MemoryRegion *mr = MEMORY_REGION(obj); |
1548 | ||
2e2b8eb7 PB |
1549 | assert(!mr->container); |
1550 | ||
1551 | /* We know the region is not visible in any address space (it | |
1552 | * does not have a container and cannot be a root either because | |
1553 | * it has no references, so we can blindly clear mr->enabled. | |
1554 | * memory_region_set_enabled instead could trigger a transaction | |
1555 | * and cause an infinite loop. | |
1556 | */ | |
1557 | mr->enabled = false; | |
1558 | memory_region_transaction_begin(); | |
1559 | while (!QTAILQ_EMPTY(&mr->subregions)) { | |
1560 | MemoryRegion *subregion = QTAILQ_FIRST(&mr->subregions); | |
1561 | memory_region_del_subregion(mr, subregion); | |
1562 | } | |
1563 | memory_region_transaction_commit(); | |
1564 | ||
545e92e0 | 1565 | mr->destructor(mr); |
093bc2cd | 1566 | memory_region_clear_coalescing(mr); |
302fa283 | 1567 | g_free((char *)mr->name); |
7267c094 | 1568 | g_free(mr->ioeventfds); |
093bc2cd AK |
1569 | } |
1570 | ||
803c0816 PB |
1571 | Object *memory_region_owner(MemoryRegion *mr) |
1572 | { | |
22a893e4 PB |
1573 | Object *obj = OBJECT(mr); |
1574 | return obj->parent; | |
803c0816 PB |
1575 | } |
1576 | ||
46637be2 PB |
1577 | void memory_region_ref(MemoryRegion *mr) |
1578 | { | |
22a893e4 PB |
1579 | /* MMIO callbacks most likely will access data that belongs |
1580 | * to the owner, hence the need to ref/unref the owner whenever | |
1581 | * the memory region is in use. | |
1582 | * | |
1583 | * The memory region is a child of its owner. As long as the | |
1584 | * owner doesn't call unparent itself on the memory region, | |
1585 | * ref-ing the owner will also keep the memory region alive. | |
612263cf PB |
1586 | * Memory regions without an owner are supposed to never go away; |
1587 | * we do not ref/unref them because it slows down DMA sensibly. | |
22a893e4 | 1588 | */ |
612263cf PB |
1589 | if (mr && mr->owner) { |
1590 | object_ref(mr->owner); | |
46637be2 PB |
1591 | } |
1592 | } | |
1593 | ||
1594 | void memory_region_unref(MemoryRegion *mr) | |
1595 | { | |
612263cf PB |
1596 | if (mr && mr->owner) { |
1597 | object_unref(mr->owner); | |
46637be2 PB |
1598 | } |
1599 | } | |
1600 | ||
093bc2cd AK |
1601 | uint64_t memory_region_size(MemoryRegion *mr) |
1602 | { | |
08dafab4 AK |
1603 | if (int128_eq(mr->size, int128_2_64())) { |
1604 | return UINT64_MAX; | |
1605 | } | |
1606 | return int128_get64(mr->size); | |
093bc2cd AK |
1607 | } |
1608 | ||
5d546d4b | 1609 | const char *memory_region_name(const MemoryRegion *mr) |
8991c79b | 1610 | { |
d1dd32af PC |
1611 | if (!mr->name) { |
1612 | ((MemoryRegion *)mr)->name = | |
1613 | object_get_canonical_path_component(OBJECT(mr)); | |
1614 | } | |
302fa283 | 1615 | return mr->name; |
8991c79b AK |
1616 | } |
1617 | ||
21e00fa5 | 1618 | bool memory_region_is_ram_device(MemoryRegion *mr) |
e4dc3f59 | 1619 | { |
21e00fa5 | 1620 | return mr->ram_device; |
e4dc3f59 ND |
1621 | } |
1622 | ||
2d1a35be | 1623 | uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr) |
55043ba3 | 1624 | { |
6f6a5ef3 | 1625 | uint8_t mask = mr->dirty_log_mask; |
adaad61c | 1626 | if (global_dirty_log && mr->ram_block) { |
6f6a5ef3 PB |
1627 | mask |= (1 << DIRTY_MEMORY_MIGRATION); |
1628 | } | |
1629 | return mask; | |
55043ba3 AK |
1630 | } |
1631 | ||
2d1a35be PB |
1632 | bool memory_region_is_logging(MemoryRegion *mr, uint8_t client) |
1633 | { | |
1634 | return memory_region_get_dirty_log_mask(mr) & (1 << client); | |
1635 | } | |
1636 | ||
3df9d748 | 1637 | static void memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr) |
5bf3d319 PX |
1638 | { |
1639 | IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE; | |
1640 | IOMMUNotifier *iommu_notifier; | |
1221a474 | 1641 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); |
5bf3d319 | 1642 | |
3df9d748 | 1643 | IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) { |
5bf3d319 PX |
1644 | flags |= iommu_notifier->notifier_flags; |
1645 | } | |
1646 | ||
1221a474 AK |
1647 | if (flags != iommu_mr->iommu_notify_flags && imrc->notify_flag_changed) { |
1648 | imrc->notify_flag_changed(iommu_mr, | |
1649 | iommu_mr->iommu_notify_flags, | |
1650 | flags); | |
5bf3d319 PX |
1651 | } |
1652 | ||
3df9d748 | 1653 | iommu_mr->iommu_notify_flags = flags; |
5bf3d319 PX |
1654 | } |
1655 | ||
cdb30812 PX |
1656 | void memory_region_register_iommu_notifier(MemoryRegion *mr, |
1657 | IOMMUNotifier *n) | |
06866575 | 1658 | { |
3df9d748 AK |
1659 | IOMMUMemoryRegion *iommu_mr; |
1660 | ||
efcd38c5 JW |
1661 | if (mr->alias) { |
1662 | memory_region_register_iommu_notifier(mr->alias, n); | |
1663 | return; | |
1664 | } | |
1665 | ||
cdb30812 | 1666 | /* We need to register for at least one bitfield */ |
3df9d748 | 1667 | iommu_mr = IOMMU_MEMORY_REGION(mr); |
cdb30812 | 1668 | assert(n->notifier_flags != IOMMU_NOTIFIER_NONE); |
698feb5e | 1669 | assert(n->start <= n->end); |
3df9d748 AK |
1670 | QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node); |
1671 | memory_region_update_iommu_notify_flags(iommu_mr); | |
06866575 DG |
1672 | } |
1673 | ||
3df9d748 | 1674 | uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr) |
a788f227 | 1675 | { |
1221a474 AK |
1676 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); |
1677 | ||
1678 | if (imrc->get_min_page_size) { | |
1679 | return imrc->get_min_page_size(iommu_mr); | |
f682e9c2 AK |
1680 | } |
1681 | return TARGET_PAGE_SIZE; | |
1682 | } | |
1683 | ||
3df9d748 | 1684 | void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n) |
f682e9c2 | 1685 | { |
3df9d748 | 1686 | MemoryRegion *mr = MEMORY_REGION(iommu_mr); |
1221a474 | 1687 | IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); |
f682e9c2 | 1688 | hwaddr addr, granularity; |
a788f227 DG |
1689 | IOMMUTLBEntry iotlb; |
1690 | ||
faa362e3 | 1691 | /* If the IOMMU has its own replay callback, override */ |
1221a474 AK |
1692 | if (imrc->replay) { |
1693 | imrc->replay(iommu_mr, n); | |
faa362e3 PX |
1694 | return; |
1695 | } | |
1696 | ||
3df9d748 | 1697 | granularity = memory_region_iommu_get_min_page_size(iommu_mr); |
f682e9c2 | 1698 | |
a788f227 | 1699 | for (addr = 0; addr < memory_region_size(mr); addr += granularity) { |
1221a474 | 1700 | iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE); |
a788f227 DG |
1701 | if (iotlb.perm != IOMMU_NONE) { |
1702 | n->notify(n, &iotlb); | |
1703 | } | |
1704 | ||
1705 | /* if (2^64 - MR size) < granularity, it's possible to get an | |
1706 | * infinite loop here. This should catch such a wraparound */ | |
1707 | if ((addr + granularity) < addr) { | |
1708 | break; | |
1709 | } | |
1710 | } | |
1711 | } | |
1712 | ||
3df9d748 | 1713 | void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr) |
de472e4a PX |
1714 | { |
1715 | IOMMUNotifier *notifier; | |
1716 | ||
3df9d748 AK |
1717 | IOMMU_NOTIFIER_FOREACH(notifier, iommu_mr) { |
1718 | memory_region_iommu_replay(iommu_mr, notifier); | |
de472e4a PX |
1719 | } |
1720 | } | |
1721 | ||
cdb30812 PX |
1722 | void memory_region_unregister_iommu_notifier(MemoryRegion *mr, |
1723 | IOMMUNotifier *n) | |
06866575 | 1724 | { |
3df9d748 AK |
1725 | IOMMUMemoryRegion *iommu_mr; |
1726 | ||
efcd38c5 JW |
1727 | if (mr->alias) { |
1728 | memory_region_unregister_iommu_notifier(mr->alias, n); | |
1729 | return; | |
1730 | } | |
cdb30812 | 1731 | QLIST_REMOVE(n, node); |
3df9d748 AK |
1732 | iommu_mr = IOMMU_MEMORY_REGION(mr); |
1733 | memory_region_update_iommu_notify_flags(iommu_mr); | |
06866575 DG |
1734 | } |
1735 | ||
bd2bfa4c PX |
1736 | void memory_region_notify_one(IOMMUNotifier *notifier, |
1737 | IOMMUTLBEntry *entry) | |
06866575 | 1738 | { |
cdb30812 PX |
1739 | IOMMUNotifierFlag request_flags; |
1740 | ||
bd2bfa4c PX |
1741 | /* |
1742 | * Skip the notification if the notification does not overlap | |
1743 | * with registered range. | |
1744 | */ | |
1745 | if (notifier->start > entry->iova + entry->addr_mask + 1 || | |
1746 | notifier->end < entry->iova) { | |
1747 | return; | |
1748 | } | |
cdb30812 | 1749 | |
bd2bfa4c | 1750 | if (entry->perm & IOMMU_RW) { |
cdb30812 PX |
1751 | request_flags = IOMMU_NOTIFIER_MAP; |
1752 | } else { | |
1753 | request_flags = IOMMU_NOTIFIER_UNMAP; | |
1754 | } | |
1755 | ||
bd2bfa4c PX |
1756 | if (notifier->notifier_flags & request_flags) { |
1757 | notifier->notify(notifier, entry); | |
1758 | } | |
1759 | } | |
1760 | ||
3df9d748 | 1761 | void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, |
bd2bfa4c PX |
1762 | IOMMUTLBEntry entry) |
1763 | { | |
1764 | IOMMUNotifier *iommu_notifier; | |
1765 | ||
3df9d748 | 1766 | assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr))); |
bd2bfa4c | 1767 | |
3df9d748 | 1768 | IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) { |
bd2bfa4c | 1769 | memory_region_notify_one(iommu_notifier, &entry); |
cdb30812 | 1770 | } |
06866575 DG |
1771 | } |
1772 | ||
093bc2cd AK |
1773 | void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) |
1774 | { | |
5a583347 | 1775 | uint8_t mask = 1 << client; |
deb809ed | 1776 | uint8_t old_logging; |
5a583347 | 1777 | |
dbddac6d | 1778 | assert(client == DIRTY_MEMORY_VGA); |
deb809ed PB |
1779 | old_logging = mr->vga_logging_count; |
1780 | mr->vga_logging_count += log ? 1 : -1; | |
1781 | if (!!old_logging == !!mr->vga_logging_count) { | |
1782 | return; | |
1783 | } | |
1784 | ||
59023ef4 | 1785 | memory_region_transaction_begin(); |
5a583347 | 1786 | mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); |
22bde714 | 1787 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1788 | memory_region_transaction_commit(); |
093bc2cd AK |
1789 | } |
1790 | ||
a8170e5e AK |
1791 | bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr, |
1792 | hwaddr size, unsigned client) | |
093bc2cd | 1793 | { |
8e41fb63 FZ |
1794 | assert(mr->ram_block); |
1795 | return cpu_physical_memory_get_dirty(memory_region_get_ram_addr(mr) + addr, | |
1796 | size, client); | |
093bc2cd AK |
1797 | } |
1798 | ||
a8170e5e AK |
1799 | void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr, |
1800 | hwaddr size) | |
093bc2cd | 1801 | { |
8e41fb63 FZ |
1802 | assert(mr->ram_block); |
1803 | cpu_physical_memory_set_dirty_range(memory_region_get_ram_addr(mr) + addr, | |
1804 | size, | |
58d2707e | 1805 | memory_region_get_dirty_log_mask(mr)); |
093bc2cd AK |
1806 | } |
1807 | ||
6c279db8 JQ |
1808 | bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr, |
1809 | hwaddr size, unsigned client) | |
1810 | { | |
8e41fb63 FZ |
1811 | assert(mr->ram_block); |
1812 | return cpu_physical_memory_test_and_clear_dirty( | |
1813 | memory_region_get_ram_addr(mr) + addr, size, client); | |
6c279db8 JQ |
1814 | } |
1815 | ||
8deaf12c GH |
1816 | DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr, |
1817 | hwaddr addr, | |
1818 | hwaddr size, | |
1819 | unsigned client) | |
1820 | { | |
1821 | assert(mr->ram_block); | |
1822 | return cpu_physical_memory_snapshot_and_clear_dirty( | |
1823 | memory_region_get_ram_addr(mr) + addr, size, client); | |
1824 | } | |
1825 | ||
1826 | bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap, | |
1827 | hwaddr addr, hwaddr size) | |
1828 | { | |
1829 | assert(mr->ram_block); | |
1830 | return cpu_physical_memory_snapshot_get_dirty(snap, | |
1831 | memory_region_get_ram_addr(mr) + addr, size); | |
1832 | } | |
6c279db8 | 1833 | |
093bc2cd AK |
1834 | void memory_region_sync_dirty_bitmap(MemoryRegion *mr) |
1835 | { | |
0a752eee | 1836 | MemoryListener *listener; |
0d673e36 | 1837 | AddressSpace *as; |
0a752eee | 1838 | FlatView *view; |
5a583347 AK |
1839 | FlatRange *fr; |
1840 | ||
0a752eee PB |
1841 | /* If the same address space has multiple log_sync listeners, we |
1842 | * visit that address space's FlatView multiple times. But because | |
1843 | * log_sync listeners are rare, it's still cheaper than walking each | |
1844 | * address space once. | |
1845 | */ | |
1846 | QTAILQ_FOREACH(listener, &memory_listeners, link) { | |
1847 | if (!listener->log_sync) { | |
1848 | continue; | |
1849 | } | |
1850 | as = listener->address_space; | |
1851 | view = address_space_get_flatview(as); | |
99e86347 | 1852 | FOR_EACH_FLAT_RANGE(fr, view) { |
0d673e36 | 1853 | if (fr->mr == mr) { |
0a752eee PB |
1854 | MemoryRegionSection mrs = section_from_flat_range(fr, as); |
1855 | listener->log_sync(listener, &mrs); | |
0d673e36 | 1856 | } |
5a583347 | 1857 | } |
856d7245 | 1858 | flatview_unref(view); |
5a583347 | 1859 | } |
093bc2cd AK |
1860 | } |
1861 | ||
1862 | void memory_region_set_readonly(MemoryRegion *mr, bool readonly) | |
1863 | { | |
fb1cd6f9 | 1864 | if (mr->readonly != readonly) { |
59023ef4 | 1865 | memory_region_transaction_begin(); |
fb1cd6f9 | 1866 | mr->readonly = readonly; |
22bde714 | 1867 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1868 | memory_region_transaction_commit(); |
fb1cd6f9 | 1869 | } |
093bc2cd AK |
1870 | } |
1871 | ||
5f9a5ea1 | 1872 | void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode) |
d0a9b5bc | 1873 | { |
5f9a5ea1 | 1874 | if (mr->romd_mode != romd_mode) { |
59023ef4 | 1875 | memory_region_transaction_begin(); |
5f9a5ea1 | 1876 | mr->romd_mode = romd_mode; |
22bde714 | 1877 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 1878 | memory_region_transaction_commit(); |
d0a9b5bc AK |
1879 | } |
1880 | } | |
1881 | ||
a8170e5e AK |
1882 | void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr, |
1883 | hwaddr size, unsigned client) | |
093bc2cd | 1884 | { |
8e41fb63 FZ |
1885 | assert(mr->ram_block); |
1886 | cpu_physical_memory_test_and_clear_dirty( | |
1887 | memory_region_get_ram_addr(mr) + addr, size, client); | |
093bc2cd AK |
1888 | } |
1889 | ||
a35ba7be PB |
1890 | int memory_region_get_fd(MemoryRegion *mr) |
1891 | { | |
4ff87573 PB |
1892 | int fd; |
1893 | ||
1894 | rcu_read_lock(); | |
1895 | while (mr->alias) { | |
1896 | mr = mr->alias; | |
a35ba7be | 1897 | } |
4ff87573 PB |
1898 | fd = mr->ram_block->fd; |
1899 | rcu_read_unlock(); | |
a35ba7be | 1900 | |
4ff87573 PB |
1901 | return fd; |
1902 | } | |
a35ba7be | 1903 | |
093bc2cd AK |
1904 | void *memory_region_get_ram_ptr(MemoryRegion *mr) |
1905 | { | |
49b24afc PB |
1906 | void *ptr; |
1907 | uint64_t offset = 0; | |
093bc2cd | 1908 | |
49b24afc PB |
1909 | rcu_read_lock(); |
1910 | while (mr->alias) { | |
1911 | offset += mr->alias_offset; | |
1912 | mr = mr->alias; | |
1913 | } | |
8e41fb63 | 1914 | assert(mr->ram_block); |
0878d0e1 | 1915 | ptr = qemu_map_ram_ptr(mr->ram_block, offset); |
49b24afc | 1916 | rcu_read_unlock(); |
093bc2cd | 1917 | |
0878d0e1 | 1918 | return ptr; |
093bc2cd AK |
1919 | } |
1920 | ||
07bdaa41 PB |
1921 | MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset) |
1922 | { | |
1923 | RAMBlock *block; | |
1924 | ||
1925 | block = qemu_ram_block_from_host(ptr, false, offset); | |
1926 | if (!block) { | |
1927 | return NULL; | |
1928 | } | |
1929 | ||
1930 | return block->mr; | |
1931 | } | |
1932 | ||
7ebb2745 FZ |
1933 | ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr) |
1934 | { | |
1935 | return mr->ram_block ? mr->ram_block->offset : RAM_ADDR_INVALID; | |
1936 | } | |
1937 | ||
37d7c084 PB |
1938 | void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp) |
1939 | { | |
8e41fb63 | 1940 | assert(mr->ram_block); |
37d7c084 | 1941 | |
fa53a0e5 | 1942 | qemu_ram_resize(mr->ram_block, newsize, errp); |
37d7c084 PB |
1943 | } |
1944 | ||
0d673e36 | 1945 | static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as) |
093bc2cd | 1946 | { |
99e86347 | 1947 | FlatView *view; |
093bc2cd AK |
1948 | FlatRange *fr; |
1949 | CoalescedMemoryRange *cmr; | |
1950 | AddrRange tmp; | |
95d2994a | 1951 | MemoryRegionSection section; |
093bc2cd | 1952 | |
856d7245 | 1953 | view = address_space_get_flatview(as); |
99e86347 | 1954 | FOR_EACH_FLAT_RANGE(fr, view) { |
093bc2cd | 1955 | if (fr->mr == mr) { |
95d2994a | 1956 | section = (MemoryRegionSection) { |
f6790af6 | 1957 | .address_space = as, |
95d2994a | 1958 | .offset_within_address_space = int128_get64(fr->addr.start), |
052e87b0 | 1959 | .size = fr->addr.size, |
95d2994a AK |
1960 | }; |
1961 | ||
9a54635d | 1962 | MEMORY_LISTENER_CALL(as, coalesced_mmio_del, Reverse, §ion, |
95d2994a AK |
1963 | int128_get64(fr->addr.start), |
1964 | int128_get64(fr->addr.size)); | |
093bc2cd AK |
1965 | QTAILQ_FOREACH(cmr, &mr->coalesced, link) { |
1966 | tmp = addrrange_shift(cmr->addr, | |
08dafab4 AK |
1967 | int128_sub(fr->addr.start, |
1968 | int128_make64(fr->offset_in_region))); | |
093bc2cd AK |
1969 | if (!addrrange_intersects(tmp, fr->addr)) { |
1970 | continue; | |
1971 | } | |
1972 | tmp = addrrange_intersection(tmp, fr->addr); | |
9a54635d | 1973 | MEMORY_LISTENER_CALL(as, coalesced_mmio_add, Forward, §ion, |
95d2994a AK |
1974 | int128_get64(tmp.start), |
1975 | int128_get64(tmp.size)); | |
093bc2cd AK |
1976 | } |
1977 | } | |
1978 | } | |
856d7245 | 1979 | flatview_unref(view); |
093bc2cd AK |
1980 | } |
1981 | ||
0d673e36 AK |
1982 | static void memory_region_update_coalesced_range(MemoryRegion *mr) |
1983 | { | |
1984 | AddressSpace *as; | |
1985 | ||
1986 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
1987 | memory_region_update_coalesced_range_as(mr, as); | |
1988 | } | |
1989 | } | |
1990 | ||
093bc2cd AK |
1991 | void memory_region_set_coalescing(MemoryRegion *mr) |
1992 | { | |
1993 | memory_region_clear_coalescing(mr); | |
08dafab4 | 1994 | memory_region_add_coalescing(mr, 0, int128_get64(mr->size)); |
093bc2cd AK |
1995 | } |
1996 | ||
1997 | void memory_region_add_coalescing(MemoryRegion *mr, | |
a8170e5e | 1998 | hwaddr offset, |
093bc2cd AK |
1999 | uint64_t size) |
2000 | { | |
7267c094 | 2001 | CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr)); |
093bc2cd | 2002 | |
08dafab4 | 2003 | cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size)); |
093bc2cd AK |
2004 | QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link); |
2005 | memory_region_update_coalesced_range(mr); | |
d410515e | 2006 | memory_region_set_flush_coalesced(mr); |
093bc2cd AK |
2007 | } |
2008 | ||
2009 | void memory_region_clear_coalescing(MemoryRegion *mr) | |
2010 | { | |
2011 | CoalescedMemoryRange *cmr; | |
ab5b3db5 | 2012 | bool updated = false; |
093bc2cd | 2013 | |
d410515e JK |
2014 | qemu_flush_coalesced_mmio_buffer(); |
2015 | mr->flush_coalesced_mmio = false; | |
2016 | ||
093bc2cd AK |
2017 | while (!QTAILQ_EMPTY(&mr->coalesced)) { |
2018 | cmr = QTAILQ_FIRST(&mr->coalesced); | |
2019 | QTAILQ_REMOVE(&mr->coalesced, cmr, link); | |
7267c094 | 2020 | g_free(cmr); |
ab5b3db5 FZ |
2021 | updated = true; |
2022 | } | |
2023 | ||
2024 | if (updated) { | |
2025 | memory_region_update_coalesced_range(mr); | |
093bc2cd | 2026 | } |
093bc2cd AK |
2027 | } |
2028 | ||
d410515e JK |
2029 | void memory_region_set_flush_coalesced(MemoryRegion *mr) |
2030 | { | |
2031 | mr->flush_coalesced_mmio = true; | |
2032 | } | |
2033 | ||
2034 | void memory_region_clear_flush_coalesced(MemoryRegion *mr) | |
2035 | { | |
2036 | qemu_flush_coalesced_mmio_buffer(); | |
2037 | if (QTAILQ_EMPTY(&mr->coalesced)) { | |
2038 | mr->flush_coalesced_mmio = false; | |
2039 | } | |
2040 | } | |
2041 | ||
196ea131 JK |
2042 | void memory_region_set_global_locking(MemoryRegion *mr) |
2043 | { | |
2044 | mr->global_locking = true; | |
2045 | } | |
2046 | ||
2047 | void memory_region_clear_global_locking(MemoryRegion *mr) | |
2048 | { | |
2049 | mr->global_locking = false; | |
2050 | } | |
2051 | ||
8c56c1a5 PF |
2052 | static bool userspace_eventfd_warning; |
2053 | ||
3e9d69e7 | 2054 | void memory_region_add_eventfd(MemoryRegion *mr, |
a8170e5e | 2055 | hwaddr addr, |
3e9d69e7 AK |
2056 | unsigned size, |
2057 | bool match_data, | |
2058 | uint64_t data, | |
753d5e14 | 2059 | EventNotifier *e) |
3e9d69e7 AK |
2060 | { |
2061 | MemoryRegionIoeventfd mrfd = { | |
08dafab4 AK |
2062 | .addr.start = int128_make64(addr), |
2063 | .addr.size = int128_make64(size), | |
3e9d69e7 AK |
2064 | .match_data = match_data, |
2065 | .data = data, | |
753d5e14 | 2066 | .e = e, |
3e9d69e7 AK |
2067 | }; |
2068 | unsigned i; | |
2069 | ||
8c56c1a5 PF |
2070 | if (kvm_enabled() && (!(kvm_eventfds_enabled() || |
2071 | userspace_eventfd_warning))) { | |
2072 | userspace_eventfd_warning = true; | |
2073 | error_report("Using eventfd without MMIO binding in KVM. " | |
2074 | "Suboptimal performance expected"); | |
2075 | } | |
2076 | ||
b8aecea2 JW |
2077 | if (size) { |
2078 | adjust_endianness(mr, &mrfd.data, size); | |
2079 | } | |
59023ef4 | 2080 | memory_region_transaction_begin(); |
3e9d69e7 AK |
2081 | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
2082 | if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) { | |
2083 | break; | |
2084 | } | |
2085 | } | |
2086 | ++mr->ioeventfd_nb; | |
7267c094 | 2087 | mr->ioeventfds = g_realloc(mr->ioeventfds, |
3e9d69e7 AK |
2088 | sizeof(*mr->ioeventfds) * mr->ioeventfd_nb); |
2089 | memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i], | |
2090 | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i)); | |
2091 | mr->ioeventfds[i] = mrfd; | |
4dc56152 | 2092 | ioeventfd_update_pending |= mr->enabled; |
59023ef4 | 2093 | memory_region_transaction_commit(); |
3e9d69e7 AK |
2094 | } |
2095 | ||
2096 | void memory_region_del_eventfd(MemoryRegion *mr, | |
a8170e5e | 2097 | hwaddr addr, |
3e9d69e7 AK |
2098 | unsigned size, |
2099 | bool match_data, | |
2100 | uint64_t data, | |
753d5e14 | 2101 | EventNotifier *e) |
3e9d69e7 AK |
2102 | { |
2103 | MemoryRegionIoeventfd mrfd = { | |
08dafab4 AK |
2104 | .addr.start = int128_make64(addr), |
2105 | .addr.size = int128_make64(size), | |
3e9d69e7 AK |
2106 | .match_data = match_data, |
2107 | .data = data, | |
753d5e14 | 2108 | .e = e, |
3e9d69e7 AK |
2109 | }; |
2110 | unsigned i; | |
2111 | ||
b8aecea2 JW |
2112 | if (size) { |
2113 | adjust_endianness(mr, &mrfd.data, size); | |
2114 | } | |
59023ef4 | 2115 | memory_region_transaction_begin(); |
3e9d69e7 AK |
2116 | for (i = 0; i < mr->ioeventfd_nb; ++i) { |
2117 | if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) { | |
2118 | break; | |
2119 | } | |
2120 | } | |
2121 | assert(i != mr->ioeventfd_nb); | |
2122 | memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1], | |
2123 | sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1))); | |
2124 | --mr->ioeventfd_nb; | |
7267c094 | 2125 | mr->ioeventfds = g_realloc(mr->ioeventfds, |
3e9d69e7 | 2126 | sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1); |
4dc56152 | 2127 | ioeventfd_update_pending |= mr->enabled; |
59023ef4 | 2128 | memory_region_transaction_commit(); |
3e9d69e7 AK |
2129 | } |
2130 | ||
feca4ac1 | 2131 | static void memory_region_update_container_subregions(MemoryRegion *subregion) |
093bc2cd | 2132 | { |
feca4ac1 | 2133 | MemoryRegion *mr = subregion->container; |
093bc2cd AK |
2134 | MemoryRegion *other; |
2135 | ||
59023ef4 JK |
2136 | memory_region_transaction_begin(); |
2137 | ||
dfde4e6e | 2138 | memory_region_ref(subregion); |
093bc2cd AK |
2139 | QTAILQ_FOREACH(other, &mr->subregions, subregions_link) { |
2140 | if (subregion->priority >= other->priority) { | |
2141 | QTAILQ_INSERT_BEFORE(other, subregion, subregions_link); | |
2142 | goto done; | |
2143 | } | |
2144 | } | |
2145 | QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); | |
2146 | done: | |
22bde714 | 2147 | memory_region_update_pending |= mr->enabled && subregion->enabled; |
59023ef4 | 2148 | memory_region_transaction_commit(); |
093bc2cd AK |
2149 | } |
2150 | ||
0598701a PC |
2151 | static void memory_region_add_subregion_common(MemoryRegion *mr, |
2152 | hwaddr offset, | |
2153 | MemoryRegion *subregion) | |
2154 | { | |
feca4ac1 PB |
2155 | assert(!subregion->container); |
2156 | subregion->container = mr; | |
0598701a | 2157 | subregion->addr = offset; |
feca4ac1 | 2158 | memory_region_update_container_subregions(subregion); |
0598701a | 2159 | } |
093bc2cd AK |
2160 | |
2161 | void memory_region_add_subregion(MemoryRegion *mr, | |
a8170e5e | 2162 | hwaddr offset, |
093bc2cd AK |
2163 | MemoryRegion *subregion) |
2164 | { | |
093bc2cd AK |
2165 | subregion->priority = 0; |
2166 | memory_region_add_subregion_common(mr, offset, subregion); | |
2167 | } | |
2168 | ||
2169 | void memory_region_add_subregion_overlap(MemoryRegion *mr, | |
a8170e5e | 2170 | hwaddr offset, |
093bc2cd | 2171 | MemoryRegion *subregion, |
a1ff8ae0 | 2172 | int priority) |
093bc2cd | 2173 | { |
093bc2cd AK |
2174 | subregion->priority = priority; |
2175 | memory_region_add_subregion_common(mr, offset, subregion); | |
2176 | } | |
2177 | ||
2178 | void memory_region_del_subregion(MemoryRegion *mr, | |
2179 | MemoryRegion *subregion) | |
2180 | { | |
59023ef4 | 2181 | memory_region_transaction_begin(); |
feca4ac1 PB |
2182 | assert(subregion->container == mr); |
2183 | subregion->container = NULL; | |
093bc2cd | 2184 | QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); |
dfde4e6e | 2185 | memory_region_unref(subregion); |
22bde714 | 2186 | memory_region_update_pending |= mr->enabled && subregion->enabled; |
59023ef4 | 2187 | memory_region_transaction_commit(); |
6bba19ba AK |
2188 | } |
2189 | ||
2190 | void memory_region_set_enabled(MemoryRegion *mr, bool enabled) | |
2191 | { | |
2192 | if (enabled == mr->enabled) { | |
2193 | return; | |
2194 | } | |
59023ef4 | 2195 | memory_region_transaction_begin(); |
6bba19ba | 2196 | mr->enabled = enabled; |
22bde714 | 2197 | memory_region_update_pending = true; |
59023ef4 | 2198 | memory_region_transaction_commit(); |
093bc2cd | 2199 | } |
1c0ffa58 | 2200 | |
e7af4c67 MT |
2201 | void memory_region_set_size(MemoryRegion *mr, uint64_t size) |
2202 | { | |
2203 | Int128 s = int128_make64(size); | |
2204 | ||
2205 | if (size == UINT64_MAX) { | |
2206 | s = int128_2_64(); | |
2207 | } | |
2208 | if (int128_eq(s, mr->size)) { | |
2209 | return; | |
2210 | } | |
2211 | memory_region_transaction_begin(); | |
2212 | mr->size = s; | |
2213 | memory_region_update_pending = true; | |
2214 | memory_region_transaction_commit(); | |
2215 | } | |
2216 | ||
67891b8a | 2217 | static void memory_region_readd_subregion(MemoryRegion *mr) |
2282e1af | 2218 | { |
feca4ac1 | 2219 | MemoryRegion *container = mr->container; |
2282e1af | 2220 | |
feca4ac1 | 2221 | if (container) { |
67891b8a PC |
2222 | memory_region_transaction_begin(); |
2223 | memory_region_ref(mr); | |
feca4ac1 PB |
2224 | memory_region_del_subregion(container, mr); |
2225 | mr->container = container; | |
2226 | memory_region_update_container_subregions(mr); | |
67891b8a PC |
2227 | memory_region_unref(mr); |
2228 | memory_region_transaction_commit(); | |
2282e1af | 2229 | } |
67891b8a | 2230 | } |
2282e1af | 2231 | |
67891b8a PC |
2232 | void memory_region_set_address(MemoryRegion *mr, hwaddr addr) |
2233 | { | |
2234 | if (addr != mr->addr) { | |
2235 | mr->addr = addr; | |
2236 | memory_region_readd_subregion(mr); | |
2237 | } | |
2282e1af AK |
2238 | } |
2239 | ||
a8170e5e | 2240 | void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset) |
4703359e | 2241 | { |
4703359e | 2242 | assert(mr->alias); |
4703359e | 2243 | |
59023ef4 | 2244 | if (offset == mr->alias_offset) { |
4703359e AK |
2245 | return; |
2246 | } | |
2247 | ||
59023ef4 JK |
2248 | memory_region_transaction_begin(); |
2249 | mr->alias_offset = offset; | |
22bde714 | 2250 | memory_region_update_pending |= mr->enabled; |
59023ef4 | 2251 | memory_region_transaction_commit(); |
4703359e AK |
2252 | } |
2253 | ||
a2b257d6 IM |
2254 | uint64_t memory_region_get_alignment(const MemoryRegion *mr) |
2255 | { | |
2256 | return mr->align; | |
2257 | } | |
2258 | ||
e2177955 AK |
2259 | static int cmp_flatrange_addr(const void *addr_, const void *fr_) |
2260 | { | |
2261 | const AddrRange *addr = addr_; | |
2262 | const FlatRange *fr = fr_; | |
2263 | ||
2264 | if (int128_le(addrrange_end(*addr), fr->addr.start)) { | |
2265 | return -1; | |
2266 | } else if (int128_ge(addr->start, addrrange_end(fr->addr))) { | |
2267 | return 1; | |
2268 | } | |
2269 | return 0; | |
2270 | } | |
2271 | ||
99e86347 | 2272 | static FlatRange *flatview_lookup(FlatView *view, AddrRange addr) |
e2177955 | 2273 | { |
99e86347 | 2274 | return bsearch(&addr, view->ranges, view->nr, |
e2177955 AK |
2275 | sizeof(FlatRange), cmp_flatrange_addr); |
2276 | } | |
2277 | ||
eed2bacf IM |
2278 | bool memory_region_is_mapped(MemoryRegion *mr) |
2279 | { | |
2280 | return mr->container ? true : false; | |
2281 | } | |
2282 | ||
c6742b14 PB |
2283 | /* Same as memory_region_find, but it does not add a reference to the |
2284 | * returned region. It must be called from an RCU critical section. | |
2285 | */ | |
2286 | static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr, | |
2287 | hwaddr addr, uint64_t size) | |
e2177955 | 2288 | { |
052e87b0 | 2289 | MemoryRegionSection ret = { .mr = NULL }; |
73034e9e PB |
2290 | MemoryRegion *root; |
2291 | AddressSpace *as; | |
2292 | AddrRange range; | |
99e86347 | 2293 | FlatView *view; |
73034e9e PB |
2294 | FlatRange *fr; |
2295 | ||
2296 | addr += mr->addr; | |
feca4ac1 PB |
2297 | for (root = mr; root->container; ) { |
2298 | root = root->container; | |
73034e9e PB |
2299 | addr += root->addr; |
2300 | } | |
e2177955 | 2301 | |
73034e9e | 2302 | as = memory_region_to_address_space(root); |
eed2bacf IM |
2303 | if (!as) { |
2304 | return ret; | |
2305 | } | |
73034e9e | 2306 | range = addrrange_make(int128_make64(addr), int128_make64(size)); |
99e86347 | 2307 | |
2b647668 | 2308 | view = atomic_rcu_read(&as->current_map); |
99e86347 | 2309 | fr = flatview_lookup(view, range); |
e2177955 | 2310 | if (!fr) { |
c6742b14 | 2311 | return ret; |
e2177955 AK |
2312 | } |
2313 | ||
99e86347 | 2314 | while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) { |
e2177955 AK |
2315 | --fr; |
2316 | } | |
2317 | ||
2318 | ret.mr = fr->mr; | |
73034e9e | 2319 | ret.address_space = as; |
e2177955 AK |
2320 | range = addrrange_intersection(range, fr->addr); |
2321 | ret.offset_within_region = fr->offset_in_region; | |
2322 | ret.offset_within_region += int128_get64(int128_sub(range.start, | |
2323 | fr->addr.start)); | |
052e87b0 | 2324 | ret.size = range.size; |
e2177955 | 2325 | ret.offset_within_address_space = int128_get64(range.start); |
7a8499e8 | 2326 | ret.readonly = fr->readonly; |
c6742b14 PB |
2327 | return ret; |
2328 | } | |
2329 | ||
2330 | MemoryRegionSection memory_region_find(MemoryRegion *mr, | |
2331 | hwaddr addr, uint64_t size) | |
2332 | { | |
2333 | MemoryRegionSection ret; | |
2334 | rcu_read_lock(); | |
2335 | ret = memory_region_find_rcu(mr, addr, size); | |
2336 | if (ret.mr) { | |
2337 | memory_region_ref(ret.mr); | |
2338 | } | |
2b647668 | 2339 | rcu_read_unlock(); |
e2177955 AK |
2340 | return ret; |
2341 | } | |
2342 | ||
c6742b14 PB |
2343 | bool memory_region_present(MemoryRegion *container, hwaddr addr) |
2344 | { | |
2345 | MemoryRegion *mr; | |
2346 | ||
2347 | rcu_read_lock(); | |
2348 | mr = memory_region_find_rcu(container, addr, 1).mr; | |
2349 | rcu_read_unlock(); | |
2350 | return mr && mr != container; | |
2351 | } | |
2352 | ||
9c1f8f44 | 2353 | void memory_global_dirty_log_sync(void) |
86e775c6 | 2354 | { |
9c1f8f44 PB |
2355 | MemoryListener *listener; |
2356 | AddressSpace *as; | |
99e86347 | 2357 | FlatView *view; |
7664e80c AK |
2358 | FlatRange *fr; |
2359 | ||
9c1f8f44 PB |
2360 | QTAILQ_FOREACH(listener, &memory_listeners, link) { |
2361 | if (!listener->log_sync) { | |
2362 | continue; | |
2363 | } | |
d45fa784 | 2364 | as = listener->address_space; |
9c1f8f44 PB |
2365 | view = address_space_get_flatview(as); |
2366 | FOR_EACH_FLAT_RANGE(fr, view) { | |
adaad61c PB |
2367 | if (fr->dirty_log_mask) { |
2368 | MemoryRegionSection mrs = section_from_flat_range(fr, as); | |
2369 | listener->log_sync(listener, &mrs); | |
2370 | } | |
9c1f8f44 PB |
2371 | } |
2372 | flatview_unref(view); | |
7664e80c AK |
2373 | } |
2374 | } | |
2375 | ||
19310760 JZ |
2376 | static VMChangeStateEntry *vmstate_change; |
2377 | ||
7664e80c AK |
2378 | void memory_global_dirty_log_start(void) |
2379 | { | |
19310760 JZ |
2380 | if (vmstate_change) { |
2381 | qemu_del_vm_change_state_handler(vmstate_change); | |
2382 | vmstate_change = NULL; | |
2383 | } | |
2384 | ||
7664e80c | 2385 | global_dirty_log = true; |
6f6a5ef3 | 2386 | |
7376e582 | 2387 | MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); |
6f6a5ef3 PB |
2388 | |
2389 | /* Refresh DIRTY_LOG_MIGRATION bit. */ | |
2390 | memory_region_transaction_begin(); | |
2391 | memory_region_update_pending = true; | |
2392 | memory_region_transaction_commit(); | |
7664e80c AK |
2393 | } |
2394 | ||
19310760 | 2395 | static void memory_global_dirty_log_do_stop(void) |
7664e80c | 2396 | { |
7664e80c | 2397 | global_dirty_log = false; |
6f6a5ef3 PB |
2398 | |
2399 | /* Refresh DIRTY_LOG_MIGRATION bit. */ | |
2400 | memory_region_transaction_begin(); | |
2401 | memory_region_update_pending = true; | |
2402 | memory_region_transaction_commit(); | |
2403 | ||
7376e582 | 2404 | MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); |
7664e80c AK |
2405 | } |
2406 | ||
19310760 JZ |
2407 | static void memory_vm_change_state_handler(void *opaque, int running, |
2408 | RunState state) | |
2409 | { | |
2410 | if (running) { | |
2411 | memory_global_dirty_log_do_stop(); | |
2412 | ||
2413 | if (vmstate_change) { | |
2414 | qemu_del_vm_change_state_handler(vmstate_change); | |
2415 | vmstate_change = NULL; | |
2416 | } | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | void memory_global_dirty_log_stop(void) | |
2421 | { | |
2422 | if (!runstate_is_running()) { | |
2423 | if (vmstate_change) { | |
2424 | return; | |
2425 | } | |
2426 | vmstate_change = qemu_add_vm_change_state_handler( | |
2427 | memory_vm_change_state_handler, NULL); | |
2428 | return; | |
2429 | } | |
2430 | ||
2431 | memory_global_dirty_log_do_stop(); | |
2432 | } | |
2433 | ||
7664e80c AK |
2434 | static void listener_add_address_space(MemoryListener *listener, |
2435 | AddressSpace *as) | |
2436 | { | |
99e86347 | 2437 | FlatView *view; |
7664e80c AK |
2438 | FlatRange *fr; |
2439 | ||
680a4783 PB |
2440 | if (listener->begin) { |
2441 | listener->begin(listener); | |
2442 | } | |
7664e80c | 2443 | if (global_dirty_log) { |
975aefe0 AK |
2444 | if (listener->log_global_start) { |
2445 | listener->log_global_start(listener); | |
2446 | } | |
7664e80c | 2447 | } |
975aefe0 | 2448 | |
856d7245 | 2449 | view = address_space_get_flatview(as); |
99e86347 | 2450 | FOR_EACH_FLAT_RANGE(fr, view) { |
7664e80c AK |
2451 | MemoryRegionSection section = { |
2452 | .mr = fr->mr, | |
f6790af6 | 2453 | .address_space = as, |
7664e80c | 2454 | .offset_within_region = fr->offset_in_region, |
052e87b0 | 2455 | .size = fr->addr.size, |
7664e80c | 2456 | .offset_within_address_space = int128_get64(fr->addr.start), |
7a8499e8 | 2457 | .readonly = fr->readonly, |
7664e80c | 2458 | }; |
680a4783 PB |
2459 | if (fr->dirty_log_mask && listener->log_start) { |
2460 | listener->log_start(listener, §ion, 0, fr->dirty_log_mask); | |
2461 | } | |
975aefe0 AK |
2462 | if (listener->region_add) { |
2463 | listener->region_add(listener, §ion); | |
2464 | } | |
7664e80c | 2465 | } |
680a4783 PB |
2466 | if (listener->commit) { |
2467 | listener->commit(listener); | |
2468 | } | |
856d7245 | 2469 | flatview_unref(view); |
7664e80c AK |
2470 | } |
2471 | ||
d45fa784 | 2472 | void memory_listener_register(MemoryListener *listener, AddressSpace *as) |
7664e80c | 2473 | { |
72e22d2f AK |
2474 | MemoryListener *other = NULL; |
2475 | ||
d45fa784 | 2476 | listener->address_space = as; |
72e22d2f AK |
2477 | if (QTAILQ_EMPTY(&memory_listeners) |
2478 | || listener->priority >= QTAILQ_LAST(&memory_listeners, | |
2479 | memory_listeners)->priority) { | |
2480 | QTAILQ_INSERT_TAIL(&memory_listeners, listener, link); | |
2481 | } else { | |
2482 | QTAILQ_FOREACH(other, &memory_listeners, link) { | |
2483 | if (listener->priority < other->priority) { | |
2484 | break; | |
2485 | } | |
2486 | } | |
2487 | QTAILQ_INSERT_BEFORE(other, listener, link); | |
2488 | } | |
0d673e36 | 2489 | |
9a54635d PB |
2490 | if (QTAILQ_EMPTY(&as->listeners) |
2491 | || listener->priority >= QTAILQ_LAST(&as->listeners, | |
2492 | memory_listeners)->priority) { | |
2493 | QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as); | |
2494 | } else { | |
2495 | QTAILQ_FOREACH(other, &as->listeners, link_as) { | |
2496 | if (listener->priority < other->priority) { | |
2497 | break; | |
2498 | } | |
2499 | } | |
2500 | QTAILQ_INSERT_BEFORE(other, listener, link_as); | |
2501 | } | |
2502 | ||
d45fa784 | 2503 | listener_add_address_space(listener, as); |
7664e80c AK |
2504 | } |
2505 | ||
2506 | void memory_listener_unregister(MemoryListener *listener) | |
2507 | { | |
1d8280c1 PB |
2508 | if (!listener->address_space) { |
2509 | return; | |
2510 | } | |
2511 | ||
72e22d2f | 2512 | QTAILQ_REMOVE(&memory_listeners, listener, link); |
9a54635d | 2513 | QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as); |
1d8280c1 | 2514 | listener->address_space = NULL; |
86e775c6 | 2515 | } |
e2177955 | 2516 | |
c9356746 FK |
2517 | bool memory_region_request_mmio_ptr(MemoryRegion *mr, hwaddr addr) |
2518 | { | |
2519 | void *host; | |
2520 | unsigned size = 0; | |
2521 | unsigned offset = 0; | |
2522 | Object *new_interface; | |
2523 | ||
2524 | if (!mr || !mr->ops->request_ptr) { | |
2525 | return false; | |
2526 | } | |
2527 | ||
2528 | /* | |
2529 | * Avoid an update if the request_ptr call | |
2530 | * memory_region_invalidate_mmio_ptr which seems to be likely when we use | |
2531 | * a cache. | |
2532 | */ | |
2533 | memory_region_transaction_begin(); | |
2534 | ||
2535 | host = mr->ops->request_ptr(mr->opaque, addr - mr->addr, &size, &offset); | |
2536 | ||
2537 | if (!host || !size) { | |
2538 | memory_region_transaction_commit(); | |
2539 | return false; | |
2540 | } | |
2541 | ||
2542 | new_interface = object_new("mmio_interface"); | |
2543 | qdev_prop_set_uint64(DEVICE(new_interface), "start", offset); | |
2544 | qdev_prop_set_uint64(DEVICE(new_interface), "end", offset + size - 1); | |
2545 | qdev_prop_set_bit(DEVICE(new_interface), "ro", true); | |
2546 | qdev_prop_set_ptr(DEVICE(new_interface), "host_ptr", host); | |
2547 | qdev_prop_set_ptr(DEVICE(new_interface), "subregion", mr); | |
2548 | object_property_set_bool(OBJECT(new_interface), true, "realized", NULL); | |
2549 | ||
2550 | memory_region_transaction_commit(); | |
2551 | return true; | |
2552 | } | |
2553 | ||
2554 | typedef struct MMIOPtrInvalidate { | |
2555 | MemoryRegion *mr; | |
2556 | hwaddr offset; | |
2557 | unsigned size; | |
2558 | int busy; | |
2559 | int allocated; | |
2560 | } MMIOPtrInvalidate; | |
2561 | ||
2562 | #define MAX_MMIO_INVALIDATE 10 | |
2563 | static MMIOPtrInvalidate mmio_ptr_invalidate_list[MAX_MMIO_INVALIDATE]; | |
2564 | ||
2565 | static void memory_region_do_invalidate_mmio_ptr(CPUState *cpu, | |
2566 | run_on_cpu_data data) | |
2567 | { | |
2568 | MMIOPtrInvalidate *invalidate_data = (MMIOPtrInvalidate *)data.host_ptr; | |
2569 | MemoryRegion *mr = invalidate_data->mr; | |
2570 | hwaddr offset = invalidate_data->offset; | |
2571 | unsigned size = invalidate_data->size; | |
2572 | MemoryRegionSection section = memory_region_find(mr, offset, size); | |
2573 | ||
2574 | qemu_mutex_lock_iothread(); | |
2575 | ||
2576 | /* Reset dirty so this doesn't happen later. */ | |
2577 | cpu_physical_memory_test_and_clear_dirty(offset, size, 1); | |
2578 | ||
2579 | if (section.mr != mr) { | |
2580 | /* memory_region_find add a ref on section.mr */ | |
2581 | memory_region_unref(section.mr); | |
2582 | if (MMIO_INTERFACE(section.mr->owner)) { | |
2583 | /* We found the interface just drop it. */ | |
2584 | object_property_set_bool(section.mr->owner, false, "realized", | |
2585 | NULL); | |
2586 | object_unref(section.mr->owner); | |
2587 | object_unparent(section.mr->owner); | |
2588 | } | |
2589 | } | |
2590 | ||
2591 | qemu_mutex_unlock_iothread(); | |
2592 | ||
2593 | if (invalidate_data->allocated) { | |
2594 | g_free(invalidate_data); | |
2595 | } else { | |
2596 | invalidate_data->busy = 0; | |
2597 | } | |
2598 | } | |
2599 | ||
2600 | void memory_region_invalidate_mmio_ptr(MemoryRegion *mr, hwaddr offset, | |
2601 | unsigned size) | |
2602 | { | |
2603 | size_t i; | |
2604 | MMIOPtrInvalidate *invalidate_data = NULL; | |
2605 | ||
2606 | for (i = 0; i < MAX_MMIO_INVALIDATE; i++) { | |
2607 | if (atomic_cmpxchg(&(mmio_ptr_invalidate_list[i].busy), 0, 1) == 0) { | |
2608 | invalidate_data = &mmio_ptr_invalidate_list[i]; | |
2609 | break; | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | if (!invalidate_data) { | |
2614 | invalidate_data = g_malloc0(sizeof(MMIOPtrInvalidate)); | |
2615 | invalidate_data->allocated = 1; | |
2616 | } | |
2617 | ||
2618 | invalidate_data->mr = mr; | |
2619 | invalidate_data->offset = offset; | |
2620 | invalidate_data->size = size; | |
2621 | ||
2622 | async_safe_run_on_cpu(first_cpu, memory_region_do_invalidate_mmio_ptr, | |
2623 | RUN_ON_CPU_HOST_PTR(invalidate_data)); | |
2624 | } | |
2625 | ||
7dca8043 | 2626 | void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name) |
1c0ffa58 | 2627 | { |
ac95190e | 2628 | memory_region_ref(root); |
59023ef4 | 2629 | memory_region_transaction_begin(); |
f0c02d15 | 2630 | as->ref_count = 1; |
8786db7c | 2631 | as->root = root; |
f0c02d15 | 2632 | as->malloced = false; |
cc94cd6d | 2633 | as->current_map = flatview_new(); |
4c19eb72 AK |
2634 | as->ioeventfd_nb = 0; |
2635 | as->ioeventfds = NULL; | |
9a54635d | 2636 | QTAILQ_INIT(&as->listeners); |
0d673e36 | 2637 | QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link); |
7dca8043 | 2638 | as->name = g_strdup(name ? name : "anonymous"); |
9a62e24f | 2639 | as->dispatch = NULL; |
f43793c7 PB |
2640 | memory_region_update_pending |= root->enabled; |
2641 | memory_region_transaction_commit(); | |
1c0ffa58 | 2642 | } |
658b2224 | 2643 | |
374f2981 | 2644 | static void do_address_space_destroy(AddressSpace *as) |
83f3c251 | 2645 | { |
f0c02d15 | 2646 | bool do_free = as->malloced; |
078c44f4 | 2647 | |
83f3c251 | 2648 | address_space_destroy_dispatch(as); |
9a54635d | 2649 | assert(QTAILQ_EMPTY(&as->listeners)); |
078c44f4 | 2650 | |
856d7245 | 2651 | flatview_unref(as->current_map); |
7dca8043 | 2652 | g_free(as->name); |
4c19eb72 | 2653 | g_free(as->ioeventfds); |
ac95190e | 2654 | memory_region_unref(as->root); |
f0c02d15 PC |
2655 | if (do_free) { |
2656 | g_free(as); | |
2657 | } | |
2658 | } | |
2659 | ||
2660 | AddressSpace *address_space_init_shareable(MemoryRegion *root, const char *name) | |
2661 | { | |
2662 | AddressSpace *as; | |
2663 | ||
2664 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
2665 | if (root == as->root && as->malloced) { | |
2666 | as->ref_count++; | |
2667 | return as; | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | as = g_malloc0(sizeof *as); | |
2672 | address_space_init(as, root, name); | |
2673 | as->malloced = true; | |
2674 | return as; | |
83f3c251 AK |
2675 | } |
2676 | ||
374f2981 PB |
2677 | void address_space_destroy(AddressSpace *as) |
2678 | { | |
ac95190e PB |
2679 | MemoryRegion *root = as->root; |
2680 | ||
f0c02d15 PC |
2681 | as->ref_count--; |
2682 | if (as->ref_count) { | |
2683 | return; | |
2684 | } | |
374f2981 PB |
2685 | /* Flush out anything from MemoryListeners listening in on this */ |
2686 | memory_region_transaction_begin(); | |
2687 | as->root = NULL; | |
2688 | memory_region_transaction_commit(); | |
2689 | QTAILQ_REMOVE(&address_spaces, as, address_spaces_link); | |
2690 | ||
2691 | /* At this point, as->dispatch and as->current_map are dummy | |
2692 | * entries that the guest should never use. Wait for the old | |
2693 | * values to expire before freeing the data. | |
2694 | */ | |
ac95190e | 2695 | as->root = root; |
374f2981 PB |
2696 | call_rcu(as, do_address_space_destroy, rcu); |
2697 | } | |
2698 | ||
4e831901 PX |
2699 | static const char *memory_region_type(MemoryRegion *mr) |
2700 | { | |
2701 | if (memory_region_is_ram_device(mr)) { | |
2702 | return "ramd"; | |
2703 | } else if (memory_region_is_romd(mr)) { | |
2704 | return "romd"; | |
2705 | } else if (memory_region_is_rom(mr)) { | |
2706 | return "rom"; | |
2707 | } else if (memory_region_is_ram(mr)) { | |
2708 | return "ram"; | |
2709 | } else { | |
2710 | return "i/o"; | |
2711 | } | |
2712 | } | |
2713 | ||
314e2987 BS |
2714 | typedef struct MemoryRegionList MemoryRegionList; |
2715 | ||
2716 | struct MemoryRegionList { | |
2717 | const MemoryRegion *mr; | |
a16878d2 | 2718 | QTAILQ_ENTRY(MemoryRegionList) mrqueue; |
314e2987 BS |
2719 | }; |
2720 | ||
a16878d2 | 2721 | typedef QTAILQ_HEAD(mrqueue, MemoryRegionList) MemoryRegionListHead; |
314e2987 | 2722 | |
4e831901 PX |
2723 | #define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \ |
2724 | int128_sub((size), int128_one())) : 0) | |
2725 | #define MTREE_INDENT " " | |
2726 | ||
314e2987 BS |
2727 | static void mtree_print_mr(fprintf_function mon_printf, void *f, |
2728 | const MemoryRegion *mr, unsigned int level, | |
a8170e5e | 2729 | hwaddr base, |
9479c57a | 2730 | MemoryRegionListHead *alias_print_queue) |
314e2987 | 2731 | { |
9479c57a JK |
2732 | MemoryRegionList *new_ml, *ml, *next_ml; |
2733 | MemoryRegionListHead submr_print_queue; | |
314e2987 BS |
2734 | const MemoryRegion *submr; |
2735 | unsigned int i; | |
b31f8412 | 2736 | hwaddr cur_start, cur_end; |
314e2987 | 2737 | |
f8a9f720 | 2738 | if (!mr) { |
314e2987 BS |
2739 | return; |
2740 | } | |
2741 | ||
2742 | for (i = 0; i < level; i++) { | |
4e831901 | 2743 | mon_printf(f, MTREE_INDENT); |
314e2987 BS |
2744 | } |
2745 | ||
b31f8412 PX |
2746 | cur_start = base + mr->addr; |
2747 | cur_end = cur_start + MR_SIZE(mr->size); | |
2748 | ||
2749 | /* | |
2750 | * Try to detect overflow of memory region. This should never | |
2751 | * happen normally. When it happens, we dump something to warn the | |
2752 | * user who is observing this. | |
2753 | */ | |
2754 | if (cur_start < base || cur_end < cur_start) { | |
2755 | mon_printf(f, "[DETECTED OVERFLOW!] "); | |
2756 | } | |
2757 | ||
314e2987 BS |
2758 | if (mr->alias) { |
2759 | MemoryRegionList *ml; | |
2760 | bool found = false; | |
2761 | ||
2762 | /* check if the alias is already in the queue */ | |
a16878d2 | 2763 | QTAILQ_FOREACH(ml, alias_print_queue, mrqueue) { |
f54bb15f | 2764 | if (ml->mr == mr->alias) { |
314e2987 BS |
2765 | found = true; |
2766 | } | |
2767 | } | |
2768 | ||
2769 | if (!found) { | |
2770 | ml = g_new(MemoryRegionList, 1); | |
2771 | ml->mr = mr->alias; | |
a16878d2 | 2772 | QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue); |
314e2987 | 2773 | } |
4896d74b | 2774 | mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx |
4e831901 | 2775 | " (prio %d, %s): alias %s @%s " TARGET_FMT_plx |
f8a9f720 | 2776 | "-" TARGET_FMT_plx "%s\n", |
b31f8412 | 2777 | cur_start, cur_end, |
4b474ba7 | 2778 | mr->priority, |
4e831901 | 2779 | memory_region_type((MemoryRegion *)mr), |
3fb18b4d PC |
2780 | memory_region_name(mr), |
2781 | memory_region_name(mr->alias), | |
314e2987 | 2782 | mr->alias_offset, |
4e831901 | 2783 | mr->alias_offset + MR_SIZE(mr->size), |
f8a9f720 | 2784 | mr->enabled ? "" : " [disabled]"); |
314e2987 | 2785 | } else { |
4896d74b | 2786 | mon_printf(f, |
4e831901 | 2787 | TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %s): %s%s\n", |
b31f8412 | 2788 | cur_start, cur_end, |
4b474ba7 | 2789 | mr->priority, |
4e831901 | 2790 | memory_region_type((MemoryRegion *)mr), |
f8a9f720 GH |
2791 | memory_region_name(mr), |
2792 | mr->enabled ? "" : " [disabled]"); | |
314e2987 | 2793 | } |
9479c57a JK |
2794 | |
2795 | QTAILQ_INIT(&submr_print_queue); | |
2796 | ||
314e2987 | 2797 | QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) { |
9479c57a JK |
2798 | new_ml = g_new(MemoryRegionList, 1); |
2799 | new_ml->mr = submr; | |
a16878d2 | 2800 | QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) { |
9479c57a JK |
2801 | if (new_ml->mr->addr < ml->mr->addr || |
2802 | (new_ml->mr->addr == ml->mr->addr && | |
2803 | new_ml->mr->priority > ml->mr->priority)) { | |
a16878d2 | 2804 | QTAILQ_INSERT_BEFORE(ml, new_ml, mrqueue); |
9479c57a JK |
2805 | new_ml = NULL; |
2806 | break; | |
2807 | } | |
2808 | } | |
2809 | if (new_ml) { | |
a16878d2 | 2810 | QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, mrqueue); |
9479c57a JK |
2811 | } |
2812 | } | |
2813 | ||
a16878d2 | 2814 | QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) { |
b31f8412 | 2815 | mtree_print_mr(mon_printf, f, ml->mr, level + 1, cur_start, |
9479c57a JK |
2816 | alias_print_queue); |
2817 | } | |
2818 | ||
a16878d2 | 2819 | QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, mrqueue, next_ml) { |
9479c57a | 2820 | g_free(ml); |
314e2987 BS |
2821 | } |
2822 | } | |
2823 | ||
57bb40c9 PX |
2824 | static void mtree_print_flatview(fprintf_function p, void *f, |
2825 | AddressSpace *as) | |
2826 | { | |
2827 | FlatView *view = address_space_get_flatview(as); | |
2828 | FlatRange *range = &view->ranges[0]; | |
2829 | MemoryRegion *mr; | |
2830 | int n = view->nr; | |
2831 | ||
2832 | if (n <= 0) { | |
2833 | p(f, MTREE_INDENT "No rendered FlatView for " | |
2834 | "address space '%s'\n", as->name); | |
2835 | flatview_unref(view); | |
2836 | return; | |
2837 | } | |
2838 | ||
2839 | while (n--) { | |
2840 | mr = range->mr; | |
377a07aa PB |
2841 | if (range->offset_in_region) { |
2842 | p(f, MTREE_INDENT TARGET_FMT_plx "-" | |
2843 | TARGET_FMT_plx " (prio %d, %s): %s @" TARGET_FMT_plx "\n", | |
2844 | int128_get64(range->addr.start), | |
2845 | int128_get64(range->addr.start) + MR_SIZE(range->addr.size), | |
2846 | mr->priority, | |
2847 | range->readonly ? "rom" : memory_region_type(mr), | |
2848 | memory_region_name(mr), | |
2849 | range->offset_in_region); | |
2850 | } else { | |
2851 | p(f, MTREE_INDENT TARGET_FMT_plx "-" | |
2852 | TARGET_FMT_plx " (prio %d, %s): %s\n", | |
2853 | int128_get64(range->addr.start), | |
2854 | int128_get64(range->addr.start) + MR_SIZE(range->addr.size), | |
2855 | mr->priority, | |
2856 | range->readonly ? "rom" : memory_region_type(mr), | |
2857 | memory_region_name(mr)); | |
2858 | } | |
57bb40c9 PX |
2859 | range++; |
2860 | } | |
2861 | ||
2862 | flatview_unref(view); | |
2863 | } | |
2864 | ||
2865 | void mtree_info(fprintf_function mon_printf, void *f, bool flatview) | |
314e2987 BS |
2866 | { |
2867 | MemoryRegionListHead ml_head; | |
2868 | MemoryRegionList *ml, *ml2; | |
0d673e36 | 2869 | AddressSpace *as; |
314e2987 | 2870 | |
57bb40c9 PX |
2871 | if (flatview) { |
2872 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { | |
2873 | mon_printf(f, "address-space (flat view): %s\n", as->name); | |
2874 | mtree_print_flatview(mon_printf, f, as); | |
2875 | mon_printf(f, "\n"); | |
2876 | } | |
2877 | return; | |
2878 | } | |
2879 | ||
314e2987 BS |
2880 | QTAILQ_INIT(&ml_head); |
2881 | ||
0d673e36 | 2882 | QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) { |
e48816aa GH |
2883 | mon_printf(f, "address-space: %s\n", as->name); |
2884 | mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head); | |
2885 | mon_printf(f, "\n"); | |
b9f9be88 BS |
2886 | } |
2887 | ||
314e2987 | 2888 | /* print aliased regions */ |
a16878d2 | 2889 | QTAILQ_FOREACH(ml, &ml_head, mrqueue) { |
e48816aa GH |
2890 | mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr)); |
2891 | mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head); | |
2892 | mon_printf(f, "\n"); | |
314e2987 BS |
2893 | } |
2894 | ||
a16878d2 | 2895 | QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) { |
88365e47 | 2896 | g_free(ml); |
314e2987 | 2897 | } |
314e2987 | 2898 | } |
b4fefef9 | 2899 | |
b08199c6 PM |
2900 | void memory_region_init_ram(MemoryRegion *mr, |
2901 | struct Object *owner, | |
2902 | const char *name, | |
2903 | uint64_t size, | |
2904 | Error **errp) | |
2905 | { | |
2906 | DeviceState *owner_dev; | |
2907 | Error *err = NULL; | |
2908 | ||
2909 | memory_region_init_ram_nomigrate(mr, owner, name, size, &err); | |
2910 | if (err) { | |
2911 | error_propagate(errp, err); | |
2912 | return; | |
2913 | } | |
2914 | /* This will assert if owner is neither NULL nor a DeviceState. | |
2915 | * We only want the owner here for the purposes of defining a | |
2916 | * unique name for migration. TODO: Ideally we should implement | |
2917 | * a naming scheme for Objects which are not DeviceStates, in | |
2918 | * which case we can relax this restriction. | |
2919 | */ | |
2920 | owner_dev = DEVICE(owner); | |
2921 | vmstate_register_ram(mr, owner_dev); | |
2922 | } | |
2923 | ||
2924 | void memory_region_init_rom(MemoryRegion *mr, | |
2925 | struct Object *owner, | |
2926 | const char *name, | |
2927 | uint64_t size, | |
2928 | Error **errp) | |
2929 | { | |
2930 | DeviceState *owner_dev; | |
2931 | Error *err = NULL; | |
2932 | ||
2933 | memory_region_init_rom_nomigrate(mr, owner, name, size, &err); | |
2934 | if (err) { | |
2935 | error_propagate(errp, err); | |
2936 | return; | |
2937 | } | |
2938 | /* This will assert if owner is neither NULL nor a DeviceState. | |
2939 | * We only want the owner here for the purposes of defining a | |
2940 | * unique name for migration. TODO: Ideally we should implement | |
2941 | * a naming scheme for Objects which are not DeviceStates, in | |
2942 | * which case we can relax this restriction. | |
2943 | */ | |
2944 | owner_dev = DEVICE(owner); | |
2945 | vmstate_register_ram(mr, owner_dev); | |
2946 | } | |
2947 | ||
2948 | void memory_region_init_rom_device(MemoryRegion *mr, | |
2949 | struct Object *owner, | |
2950 | const MemoryRegionOps *ops, | |
2951 | void *opaque, | |
2952 | const char *name, | |
2953 | uint64_t size, | |
2954 | Error **errp) | |
2955 | { | |
2956 | DeviceState *owner_dev; | |
2957 | Error *err = NULL; | |
2958 | ||
2959 | memory_region_init_rom_device_nomigrate(mr, owner, ops, opaque, | |
2960 | name, size, &err); | |
2961 | if (err) { | |
2962 | error_propagate(errp, err); | |
2963 | return; | |
2964 | } | |
2965 | /* This will assert if owner is neither NULL nor a DeviceState. | |
2966 | * We only want the owner here for the purposes of defining a | |
2967 | * unique name for migration. TODO: Ideally we should implement | |
2968 | * a naming scheme for Objects which are not DeviceStates, in | |
2969 | * which case we can relax this restriction. | |
2970 | */ | |
2971 | owner_dev = DEVICE(owner); | |
2972 | vmstate_register_ram(mr, owner_dev); | |
2973 | } | |
2974 | ||
b4fefef9 PC |
2975 | static const TypeInfo memory_region_info = { |
2976 | .parent = TYPE_OBJECT, | |
2977 | .name = TYPE_MEMORY_REGION, | |
2978 | .instance_size = sizeof(MemoryRegion), | |
2979 | .instance_init = memory_region_initfn, | |
2980 | .instance_finalize = memory_region_finalize, | |
2981 | }; | |
2982 | ||
3df9d748 AK |
2983 | static const TypeInfo iommu_memory_region_info = { |
2984 | .parent = TYPE_MEMORY_REGION, | |
2985 | .name = TYPE_IOMMU_MEMORY_REGION, | |
1221a474 | 2986 | .class_size = sizeof(IOMMUMemoryRegionClass), |
3df9d748 AK |
2987 | .instance_size = sizeof(IOMMUMemoryRegion), |
2988 | .instance_init = iommu_memory_region_initfn, | |
1221a474 | 2989 | .abstract = true, |
3df9d748 AK |
2990 | }; |
2991 | ||
b4fefef9 PC |
2992 | static void memory_register_types(void) |
2993 | { | |
2994 | type_register_static(&memory_region_info); | |
3df9d748 | 2995 | type_register_static(&iommu_memory_region_info); |
b4fefef9 PC |
2996 | } |
2997 | ||
2998 | type_init(memory_register_types) |