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Avi Kivity093bc2c2011-07-26 14:26:01 +03001/*
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 *
Paolo Bonzini6b620ca2012-01-13 17:44:23 +010012 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
Avi Kivity093bc2c2011-07-26 14:26:01 +030014 */
15
Peter Maydelld38ea872016-01-29 17:50:05 +000016#include "qemu/osdep.h"
Markus Armbrusterda34e652016-03-14 09:01:28 +010017#include "qapi/error.h"
Paolo Bonzini33c11872016-03-15 16:58:45 +010018#include "qemu-common.h"
19#include "cpu.h"
Paolo Bonzini022c62c2012-12-17 18:19:49 +010020#include "exec/memory.h"
21#include "exec/address-spaces.h"
22#include "exec/ioport.h"
Peter Crosthwaite409ddd02014-06-05 23:16:27 -070023#include "qapi/visitor.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010024#include "qemu/bitops.h"
Pavel Fedin8c56c1a2015-11-20 12:37:16 +030025#include "qemu/error-report.h"
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -040026#include "qom/object.h"
Daniel P. Berrange0ab8ed12017-01-25 16:14:15 +000027#include "trace-root.h"
Avi Kivity093bc2c2011-07-26 14:26:01 +030028
Paolo Bonzini022c62c2012-12-17 18:19:49 +010029#include "exec/memory-internal.h"
Juan Quintela220c3eb2013-10-14 17:13:59 +020030#include "exec/ram_addr.h"
Pavel Fedin8c56c1a2015-11-20 12:37:16 +030031#include "sysemu/kvm.h"
Paolo Bonzinie1c57ab2014-05-14 17:43:18 +080032#include "sysemu/sysemu.h"
KONRAD Fredericc9356742016-10-19 15:06:49 +020033#include "hw/misc/mmio_interface.h"
34#include "hw/qdev-properties.h"
Peter Maydellb08199c2017-07-07 15:42:51 +010035#include "migration/vmstate.h"
Avi Kivity67d95c12011-12-15 15:25:22 +020036
Paolo Bonzinid1970632013-05-24 13:23:38 +020037//#define DEBUG_UNASSIGNED
38
Jan Kiszka22bde712012-11-05 16:45:56 +010039static unsigned memory_region_transaction_depth;
40static bool memory_region_update_pending;
Gonglei4dc56152014-05-08 11:47:32 +080041static bool ioeventfd_update_pending;
Avi Kivity7664e802011-12-11 14:47:25 +020042static bool global_dirty_log = false;
43
Avi Kivity72e22d22012-02-08 15:05:50 +020044static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
45 = QTAILQ_HEAD_INITIALIZER(memory_listeners);
Avi Kivity4ef4db82011-07-26 14:26:13 +030046
Avi Kivity0d673e32012-10-02 15:28:50 +020047static QTAILQ_HEAD(, AddressSpace) address_spaces
48 = QTAILQ_HEAD_INITIALIZER(address_spaces);
49
Avi Kivity093bc2c2011-07-26 14:26:01 +030050typedef struct AddrRange AddrRange;
51
Avi Kivity8417ceb2011-08-03 11:56:14 +030052/*
Fam Zhengc9cdaa32014-08-11 10:18:31 +080053 * Note that signed integers are needed for negative offsetting in aliases
Avi Kivity8417ceb2011-08-03 11:56:14 +030054 * (large MemoryRegion::alias_offset).
55 */
Avi Kivity093bc2c2011-07-26 14:26:01 +030056struct AddrRange {
Avi Kivity08dafab2011-10-16 13:19:17 +020057 Int128 start;
58 Int128 size;
Avi Kivity093bc2c2011-07-26 14:26:01 +030059};
60
Avi Kivity08dafab2011-10-16 13:19:17 +020061static AddrRange addrrange_make(Int128 start, Int128 size)
Avi Kivity093bc2c2011-07-26 14:26:01 +030062{
63 return (AddrRange) { start, size };
64}
65
66static bool addrrange_equal(AddrRange r1, AddrRange r2)
67{
Avi Kivity08dafab2011-10-16 13:19:17 +020068 return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030069}
70
Avi Kivity08dafab2011-10-16 13:19:17 +020071static Int128 addrrange_end(AddrRange r)
Avi Kivity093bc2c2011-07-26 14:26:01 +030072{
Avi Kivity08dafab2011-10-16 13:19:17 +020073 return int128_add(r.start, r.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030074}
75
Avi Kivity08dafab2011-10-16 13:19:17 +020076static AddrRange addrrange_shift(AddrRange range, Int128 delta)
Avi Kivity093bc2c2011-07-26 14:26:01 +030077{
Avi Kivity08dafab2011-10-16 13:19:17 +020078 int128_addto(&range.start, delta);
Avi Kivity093bc2c2011-07-26 14:26:01 +030079 return range;
80}
81
Avi Kivity08dafab2011-10-16 13:19:17 +020082static bool addrrange_contains(AddrRange range, Int128 addr)
83{
84 return int128_ge(addr, range.start)
85 && int128_lt(addr, addrrange_end(range));
86}
87
Avi Kivity093bc2c2011-07-26 14:26:01 +030088static bool addrrange_intersects(AddrRange r1, AddrRange r2)
89{
Avi Kivity08dafab2011-10-16 13:19:17 +020090 return addrrange_contains(r1, r2.start)
91 || addrrange_contains(r2, r1.start);
Avi Kivity093bc2c2011-07-26 14:26:01 +030092}
93
94static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
95{
Avi Kivity08dafab2011-10-16 13:19:17 +020096 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));
Avi Kivity093bc2c2011-07-26 14:26:01 +030099}
100
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200101enum ListenerDirection { Forward, Reverse };
102
Avi Kivity7376e582012-02-08 21:05:17 +0200103#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200104 do { \
105 MemoryListener *_listener; \
106 \
107 switch (_direction) { \
108 case Forward: \
109 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200110 if (_listener->_callback) { \
111 _listener->_callback(_listener, ##_args); \
112 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200113 } \
114 break; \
115 case Reverse: \
116 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
117 memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200118 if (_listener->_callback) { \
119 _listener->_callback(_listener, ##_args); \
120 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200121 } \
122 break; \
123 default: \
124 abort(); \
125 } \
126 } while (0)
127
Paolo Bonzini9a546352016-09-22 16:23:06 +0200128#define MEMORY_LISTENER_CALL(_as, _callback, _direction, _section, _args...) \
Avi Kivity7376e582012-02-08 21:05:17 +0200129 do { \
130 MemoryListener *_listener; \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200131 struct memory_listeners_as *list = &(_as)->listeners; \
Avi Kivity7376e582012-02-08 21:05:17 +0200132 \
133 switch (_direction) { \
134 case Forward: \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200135 QTAILQ_FOREACH(_listener, list, link_as) { \
136 if (_listener->_callback) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200137 _listener->_callback(_listener, _section, ##_args); \
138 } \
139 } \
140 break; \
141 case Reverse: \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200142 QTAILQ_FOREACH_REVERSE(_listener, list, memory_listeners_as, \
143 link_as) { \
144 if (_listener->_callback) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200145 _listener->_callback(_listener, _section, ##_args); \
146 } \
147 } \
148 break; \
149 default: \
150 abort(); \
151 } \
152 } while (0)
153
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200154/* No need to ref/unref .mr, the FlatRange keeps it alive. */
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200155#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback, _args...) \
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200156 do { \
157 MemoryRegionSection mrs = section_from_flat_range(fr, as); \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200158 MEMORY_LISTENER_CALL(as, callback, dir, &mrs, ##_args); \
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200159 } while(0)
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200160
Avi Kivity093bc2c2011-07-26 14:26:01 +0300161struct CoalescedMemoryRange {
162 AddrRange addr;
163 QTAILQ_ENTRY(CoalescedMemoryRange) link;
164};
165
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300166struct MemoryRegionIoeventfd {
167 AddrRange addr;
168 bool match_data;
169 uint64_t data;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200170 EventNotifier *e;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300171};
172
173static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
174 MemoryRegionIoeventfd b)
175{
Avi Kivity08dafab2011-10-16 13:19:17 +0200176 if (int128_lt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300177 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200178 } else if (int128_gt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300179 return false;
Avi Kivity08dafab2011-10-16 13:19:17 +0200180 } else if (int128_lt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300181 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200182 } else if (int128_gt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300183 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 }
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200195 if (a.e < b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300196 return true;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200197 } else if (a.e > b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300198 return false;
199 }
200 return false;
201}
202
203static 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
Avi Kivity093bc2c2011-07-26 14:26:01 +0300210typedef struct FlatRange FlatRange;
211typedef struct FlatView FlatView;
212
213/* Range of memory in the global map. Addresses are absolute. */
214struct FlatRange {
215 MemoryRegion *mr;
Avi Kivitya8170e52012-10-23 12:30:10 +0200216 hwaddr offset_in_region;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300217 AddrRange addr;
Avi Kivity5a583342011-07-26 14:26:02 +0300218 uint8_t dirty_log_mask;
Paolo Bonzinib138e652016-05-24 21:26:28 +0200219 bool romd_mode;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300220 bool readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300221};
222
223/* Flattened global view of current active memory hierarchy. Kept in sorted
224 * order.
225 */
226struct FlatView {
Paolo Bonzini374f2982013-05-17 12:37:03 +0200227 struct rcu_head rcu;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200228 unsigned ref;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300229 FlatRange *ranges;
230 unsigned nr;
231 unsigned nr_allocated;
232};
233
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300234typedef struct AddressSpaceOps AddressSpaceOps;
235
Avi Kivity093bc2c2011-07-26 14:26:01 +0300236#define FOR_EACH_FLAT_RANGE(var, view) \
237 for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
238
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200239static inline MemoryRegionSection
240section_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
Avi Kivity093bc2c2011-07-26 14:26:01 +0300252static bool flatrange_equal(FlatRange *a, FlatRange *b)
253{
254 return a->mr == b->mr
255 && addrrange_equal(a->addr, b->addr)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300256 && a->offset_in_region == b->offset_in_region
Paolo Bonzinib138e652016-05-24 21:26:28 +0200257 && a->romd_mode == b->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300258 && a->readonly == b->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300259}
260
261static void flatview_init(FlatView *view)
262{
Paolo Bonzini856d7242013-05-06 11:57:21 +0200263 view->ref = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300264 view->ranges = NULL;
265 view->nr = 0;
266 view->nr_allocated = 0;
267}
268
269/* Insert a range into a given position. Caller is responsible for maintaining
270 * sorting order.
271 */
272static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
273{
274 if (view->nr == view->nr_allocated) {
275 view->nr_allocated = MAX(2 * view->nr, 10);
Anthony Liguori7267c092011-08-20 22:09:37 -0500276 view->ranges = g_realloc(view->ranges,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300277 view->nr_allocated * sizeof(*view->ranges));
278 }
279 memmove(view->ranges + pos + 1, view->ranges + pos,
280 (view->nr - pos) * sizeof(FlatRange));
281 view->ranges[pos] = *range;
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200282 memory_region_ref(range->mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300283 ++view->nr;
284}
285
286static void flatview_destroy(FlatView *view)
287{
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200288 int i;
289
290 for (i = 0; i < view->nr; i++) {
291 memory_region_unref(view->ranges[i].mr);
292 }
Anthony Liguori7267c092011-08-20 22:09:37 -0500293 g_free(view->ranges);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200294 g_free(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300295}
296
Paolo Bonzini856d7242013-05-06 11:57:21 +0200297static void flatview_ref(FlatView *view)
298{
299 atomic_inc(&view->ref);
300}
301
302static void flatview_unref(FlatView *view)
303{
304 if (atomic_fetch_dec(&view->ref) == 1) {
305 flatview_destroy(view);
306 }
307}
308
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300309static bool can_merge(FlatRange *r1, FlatRange *r2)
310{
Avi Kivity08dafab2011-10-16 13:19:17 +0200311 return int128_eq(addrrange_end(r1->addr), r2->addr.start)
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300312 && r1->mr == r2->mr
Avi Kivity08dafab2011-10-16 13:19:17 +0200313 && int128_eq(int128_add(int128_make64(r1->offset_in_region),
314 r1->addr.size),
315 int128_make64(r2->offset_in_region))
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300316 && r1->dirty_log_mask == r2->dirty_log_mask
Paolo Bonzinib138e652016-05-24 21:26:28 +0200317 && r1->romd_mode == r2->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300318 && r1->readonly == r2->readonly;
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300319}
320
Peter Crosthwaite8508e022013-06-03 15:31:56 +1000321/* Attempt to simplify a view by merging adjacent ranges */
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300322static void flatview_simplify(FlatView *view)
323{
324 unsigned i, j;
325
326 i = 0;
327 while (i < view->nr) {
328 j = i + 1;
329 while (j < view->nr
330 && can_merge(&view->ranges[j-1], &view->ranges[j])) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200331 int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300332 ++j;
333 }
334 ++i;
335 memmove(&view->ranges[i], &view->ranges[j],
336 (view->nr - j) * sizeof(view->ranges[j]));
337 view->nr -= j - i;
338 }
339}
340
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200341static bool memory_region_big_endian(MemoryRegion *mr)
342{
343#ifdef TARGET_WORDS_BIGENDIAN
344 return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
345#else
346 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
347#endif
348}
349
Paolo Bonzinie11ef3d2013-07-22 15:54:35 +0200350static bool memory_region_wrong_endianness(MemoryRegion *mr)
351{
352#ifdef TARGET_WORDS_BIGENDIAN
353 return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
354#else
355 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
356#endif
357}
358
359static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
360{
361 if (memory_region_wrong_endianness(mr)) {
362 switch (size) {
363 case 1:
364 break;
365 case 2:
366 *data = bswap16(*data);
367 break;
368 case 4:
369 *data = bswap32(*data);
370 break;
371 case 8:
372 *data = bswap64(*data);
373 break;
374 default:
375 abort();
376 }
377 }
378}
379
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800380static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset)
381{
382 MemoryRegion *root;
383 hwaddr abs_addr = offset;
384
385 abs_addr += mr->addr;
386 for (root = mr; root->container; ) {
387 root = root->container;
388 abs_addr += root->addr;
389 }
390
391 return abs_addr;
392}
393
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800394static int get_cpu_index(void)
395{
396 if (current_cpu) {
397 return current_cpu->cpu_index;
398 }
399 return -1;
400}
401
Peter Maydellcc05c432015-04-26 16:49:23 +0100402static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
403 hwaddr addr,
404 uint64_t *value,
405 unsigned size,
406 unsigned shift,
407 uint64_t mask,
408 MemTxAttrs attrs)
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200409{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200410 uint64_t tmp;
411
412 tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800413 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800414 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800415 } else if (mr == &io_mem_notdirty) {
416 /* Accesses to code which has previously been translated into a TB show
417 * up in the MMIO path, as accesses to the io_mem_notdirty
418 * MemoryRegion. */
419 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800420 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
421 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800422 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800423 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200424 *value |= (tmp & mask) << shift;
Peter Maydellcc05c432015-04-26 16:49:23 +0100425 return MEMTX_OK;
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200426}
427
Peter Maydellcc05c432015-04-26 16:49:23 +0100428static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
429 hwaddr addr,
430 uint64_t *value,
431 unsigned size,
432 unsigned shift,
433 uint64_t mask,
434 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300435{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300436 uint64_t tmp;
437
438 tmp = mr->ops->read(mr->opaque, addr, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800439 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800440 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800441 } else if (mr == &io_mem_notdirty) {
442 /* Accesses to code which has previously been translated into a TB show
443 * up in the MMIO path, as accesses to the io_mem_notdirty
444 * MemoryRegion. */
445 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800446 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
447 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800448 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800449 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300450 *value |= (tmp & mask) << shift;
Peter Maydellcc05c432015-04-26 16:49:23 +0100451 return MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300452}
453
Peter Maydellcc05c432015-04-26 16:49:23 +0100454static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
455 hwaddr addr,
456 uint64_t *value,
457 unsigned size,
458 unsigned shift,
459 uint64_t mask,
460 MemTxAttrs attrs)
461{
462 uint64_t tmp = 0;
463 MemTxResult r;
464
Peter Maydellcc05c432015-04-26 16:49:23 +0100465 r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800466 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800467 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800468 } else if (mr == &io_mem_notdirty) {
469 /* Accesses to code which has previously been translated into a TB show
470 * up in the MMIO path, as accesses to the io_mem_notdirty
471 * MemoryRegion. */
472 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800473 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
474 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800475 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800476 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100477 *value |= (tmp & mask) << shift;
478 return r;
479}
480
481static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
482 hwaddr addr,
483 uint64_t *value,
484 unsigned size,
485 unsigned shift,
486 uint64_t mask,
487 MemTxAttrs attrs)
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200488{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200489 uint64_t tmp;
490
491 tmp = (*value >> shift) & mask;
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800492 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800493 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800494 } else if (mr == &io_mem_notdirty) {
495 /* Accesses to code which has previously been translated into a TB show
496 * up in the MMIO path, as accesses to the io_mem_notdirty
497 * MemoryRegion. */
498 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800499 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
500 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800501 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800502 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200503 mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
Peter Maydellcc05c432015-04-26 16:49:23 +0100504 return MEMTX_OK;
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200505}
506
Peter Maydellcc05c432015-04-26 16:49:23 +0100507static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
508 hwaddr addr,
509 uint64_t *value,
510 unsigned size,
511 unsigned shift,
512 uint64_t mask,
513 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300514{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300515 uint64_t tmp;
516
517 tmp = (*value >> shift) & mask;
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800518 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800519 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800520 } else if (mr == &io_mem_notdirty) {
521 /* Accesses to code which has previously been translated into a TB show
522 * up in the MMIO path, as accesses to the io_mem_notdirty
523 * MemoryRegion. */
524 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800525 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
526 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800527 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800528 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300529 mr->ops->write(mr->opaque, addr, tmp, size);
Peter Maydellcc05c432015-04-26 16:49:23 +0100530 return MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300531}
532
Peter Maydellcc05c432015-04-26 16:49:23 +0100533static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
534 hwaddr addr,
535 uint64_t *value,
536 unsigned size,
537 unsigned shift,
538 uint64_t mask,
539 MemTxAttrs attrs)
540{
541 uint64_t tmp;
542
Peter Maydellcc05c432015-04-26 16:49:23 +0100543 tmp = (*value >> shift) & mask;
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800544 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800545 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800546 } else if (mr == &io_mem_notdirty) {
547 /* Accesses to code which has previously been translated into a TB show
548 * up in the MMIO path, as accesses to the io_mem_notdirty
549 * MemoryRegion. */
550 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800551 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
552 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800553 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800554 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100555 return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
556}
557
558static MemTxResult access_with_adjusted_size(hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300559 uint64_t *value,
560 unsigned size,
561 unsigned access_size_min,
562 unsigned access_size_max,
Peter Maydellcc05c432015-04-26 16:49:23 +0100563 MemTxResult (*access)(MemoryRegion *mr,
564 hwaddr addr,
565 uint64_t *value,
566 unsigned size,
567 unsigned shift,
568 uint64_t mask,
569 MemTxAttrs attrs),
570 MemoryRegion *mr,
571 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300572{
573 uint64_t access_mask;
574 unsigned access_size;
575 unsigned i;
Peter Maydellcc05c432015-04-26 16:49:23 +0100576 MemTxResult r = MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300577
578 if (!access_size_min) {
579 access_size_min = 1;
580 }
581 if (!access_size_max) {
582 access_size_max = 4;
583 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200584
585 /* FIXME: support unaligned access? */
Avi Kivity164a4dc2011-08-11 10:40:25 +0300586 access_size = MAX(MIN(size, access_size_max), access_size_min);
587 access_mask = -1ULL >> (64 - access_size * 8);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200588 if (memory_region_big_endian(mr)) {
589 for (i = 0; i < size; i += access_size) {
Peter Maydellcc05c432015-04-26 16:49:23 +0100590 r |= access(mr, addr + i, value, access_size,
591 (size - access_size - i) * 8, access_mask, attrs);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200592 }
593 } else {
594 for (i = 0; i < size; i += access_size) {
Peter Maydellcc05c432015-04-26 16:49:23 +0100595 r |= access(mr, addr + i, value, access_size, i * 8,
596 access_mask, attrs);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200597 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300598 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100599 return r;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300600}
601
Avi Kivitye2177952011-12-08 15:00:18 +0200602static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
603{
Avi Kivity0d673e32012-10-02 15:28:50 +0200604 AddressSpace *as;
605
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +0200606 while (mr->container) {
607 mr = mr->container;
Avi Kivitye2177952011-12-08 15:00:18 +0200608 }
Avi Kivity0d673e32012-10-02 15:28:50 +0200609 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
610 if (mr == as->root) {
611 return as;
612 }
Avi Kivitye2177952011-12-08 15:00:18 +0200613 }
Igor Mammedoveed2bac2014-06-02 15:25:06 +0200614 return NULL;
Avi Kivitye2177952011-12-08 15:00:18 +0200615}
616
Avi Kivity093bc2c2011-07-26 14:26:01 +0300617/* Render a memory region into the global view. Ranges in @view obscure
618 * ranges in @mr.
619 */
620static void render_memory_region(FlatView *view,
621 MemoryRegion *mr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200622 Int128 base,
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300623 AddrRange clip,
624 bool readonly)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300625{
626 MemoryRegion *subregion;
627 unsigned i;
Avi Kivitya8170e52012-10-23 12:30:10 +0200628 hwaddr offset_in_region;
Avi Kivity08dafab2011-10-16 13:19:17 +0200629 Int128 remain;
630 Int128 now;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300631 FlatRange fr;
632 AddrRange tmp;
633
Avi Kivity6bba19b2011-09-14 11:54:58 +0300634 if (!mr->enabled) {
635 return;
636 }
637
Avi Kivity08dafab2011-10-16 13:19:17 +0200638 int128_addto(&base, int128_make64(mr->addr));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300639 readonly |= mr->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300640
641 tmp = addrrange_make(base, mr->size);
642
643 if (!addrrange_intersects(tmp, clip)) {
644 return;
645 }
646
647 clip = addrrange_intersection(tmp, clip);
648
649 if (mr->alias) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200650 int128_subfrom(&base, int128_make64(mr->alias->addr));
651 int128_subfrom(&base, int128_make64(mr->alias_offset));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300652 render_memory_region(view, mr->alias, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300653 return;
654 }
655
656 /* Render subregions in priority order. */
657 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300658 render_memory_region(view, subregion, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300659 }
660
Avi Kivity14a3c102011-07-26 14:26:06 +0300661 if (!mr->terminates) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300662 return;
663 }
664
Avi Kivity08dafab2011-10-16 13:19:17 +0200665 offset_in_region = int128_get64(int128_sub(clip.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300666 base = clip.start;
667 remain = clip.size;
668
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000669 fr.mr = mr;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +0100670 fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
Paolo Bonzinib138e652016-05-24 21:26:28 +0200671 fr.romd_mode = mr->romd_mode;
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000672 fr.readonly = readonly;
673
Avi Kivity093bc2c2011-07-26 14:26:01 +0300674 /* Render the region itself into any gaps left by the current view. */
Avi Kivity08dafab2011-10-16 13:19:17 +0200675 for (i = 0; i < view->nr && int128_nz(remain); ++i) {
676 if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300677 continue;
678 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200679 if (int128_lt(base, view->ranges[i].addr.start)) {
680 now = int128_min(remain,
681 int128_sub(view->ranges[i].addr.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300682 fr.offset_in_region = offset_in_region;
683 fr.addr = addrrange_make(base, now);
684 flatview_insert(view, i, &fr);
685 ++i;
Avi Kivity08dafab2011-10-16 13:19:17 +0200686 int128_addto(&base, now);
687 offset_in_region += int128_get64(now);
688 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300689 }
Avi Kivityd26a8ca2012-10-29 18:22:36 +0200690 now = int128_sub(int128_min(int128_add(base, remain),
691 addrrange_end(view->ranges[i].addr)),
692 base);
693 int128_addto(&base, now);
694 offset_in_region += int128_get64(now);
695 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300696 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200697 if (int128_nz(remain)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300698 fr.offset_in_region = offset_in_region;
699 fr.addr = addrrange_make(base, remain);
700 flatview_insert(view, i, &fr);
701 }
702}
703
704/* Render a memory topology into a list of disjoint absolute ranges. */
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200705static FlatView *generate_memory_topology(MemoryRegion *mr)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300706{
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200707 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300708
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200709 view = g_new(FlatView, 1);
710 flatview_init(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300711
Avi Kivity83f3c252012-10-07 12:59:55 +0200712 if (mr) {
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200713 render_memory_region(view, mr, int128_zero(),
Avi Kivity83f3c252012-10-07 12:59:55 +0200714 addrrange_make(int128_zero(), int128_2_64()), false);
715 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200716 flatview_simplify(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300717
718 return view;
719}
720
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300721static void address_space_add_del_ioeventfds(AddressSpace *as,
722 MemoryRegionIoeventfd *fds_new,
723 unsigned fds_new_nb,
724 MemoryRegionIoeventfd *fds_old,
725 unsigned fds_old_nb)
726{
727 unsigned iold, inew;
Avi Kivity80a1ea32012-02-08 16:39:06 +0200728 MemoryRegionIoeventfd *fd;
729 MemoryRegionSection section;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300730
731 /* Generate a symmetric difference of the old and new fd sets, adding
732 * and deleting as necessary.
733 */
734
735 iold = inew = 0;
736 while (iold < fds_old_nb || inew < fds_new_nb) {
737 if (iold < fds_old_nb
738 && (inew == fds_new_nb
739 || memory_region_ioeventfd_before(fds_old[iold],
740 fds_new[inew]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200741 fd = &fds_old[iold];
742 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +0200743 .address_space = as,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200744 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200745 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200746 };
Paolo Bonzini9a546352016-09-22 16:23:06 +0200747 MEMORY_LISTENER_CALL(as, eventfd_del, Forward, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200748 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300749 ++iold;
750 } else if (inew < fds_new_nb
751 && (iold == fds_old_nb
752 || memory_region_ioeventfd_before(fds_new[inew],
753 fds_old[iold]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200754 fd = &fds_new[inew];
755 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +0200756 .address_space = as,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200757 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200758 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200759 };
Paolo Bonzini9a546352016-09-22 16:23:06 +0200760 MEMORY_LISTENER_CALL(as, eventfd_add, Reverse, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200761 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300762 ++inew;
763 } else {
764 ++iold;
765 ++inew;
766 }
767 }
768}
769
Paolo Bonzini856d7242013-05-06 11:57:21 +0200770static FlatView *address_space_get_flatview(AddressSpace *as)
771{
772 FlatView *view;
773
Paolo Bonzini374f2982013-05-17 12:37:03 +0200774 rcu_read_lock();
775 view = atomic_rcu_read(&as->current_map);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200776 flatview_ref(view);
Paolo Bonzini374f2982013-05-17 12:37:03 +0200777 rcu_read_unlock();
Paolo Bonzini856d7242013-05-06 11:57:21 +0200778 return view;
779}
780
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300781static void address_space_update_ioeventfds(AddressSpace *as)
782{
Paolo Bonzini99e86342013-05-06 10:26:13 +0200783 FlatView *view;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300784 FlatRange *fr;
785 unsigned ioeventfd_nb = 0;
786 MemoryRegionIoeventfd *ioeventfds = NULL;
787 AddrRange tmp;
788 unsigned i;
789
Paolo Bonzini856d7242013-05-06 11:57:21 +0200790 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +0200791 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300792 for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
793 tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200794 int128_sub(fr->addr.start,
795 int128_make64(fr->offset_in_region)));
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300796 if (addrrange_intersects(fr->addr, tmp)) {
797 ++ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -0500798 ioeventfds = g_realloc(ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300799 ioeventfd_nb * sizeof(*ioeventfds));
800 ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
801 ioeventfds[ioeventfd_nb-1].addr = tmp;
802 }
803 }
804 }
805
806 address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
807 as->ioeventfds, as->ioeventfd_nb);
808
Anthony Liguori7267c092011-08-20 22:09:37 -0500809 g_free(as->ioeventfds);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300810 as->ioeventfds = ioeventfds;
811 as->ioeventfd_nb = ioeventfd_nb;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200812 flatview_unref(view);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300813}
814
Avi Kivityb8af1af2011-07-26 14:26:12 +0300815static void address_space_update_topology_pass(AddressSpace *as,
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200816 const FlatView *old_view,
817 const FlatView *new_view,
Avi Kivityb8af1af2011-07-26 14:26:12 +0300818 bool adding)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300819{
Avi Kivity093bc2c2011-07-26 14:26:01 +0300820 unsigned iold, inew;
821 FlatRange *frold, *frnew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300822
823 /* Generate a symmetric difference of the old and new memory maps.
824 * Kill ranges in the old map, and instantiate ranges in the new map.
825 */
826 iold = inew = 0;
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200827 while (iold < old_view->nr || inew < new_view->nr) {
828 if (iold < old_view->nr) {
829 frold = &old_view->ranges[iold];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300830 } else {
831 frold = NULL;
832 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200833 if (inew < new_view->nr) {
834 frnew = &new_view->ranges[inew];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300835 } else {
836 frnew = NULL;
837 }
838
839 if (frold
840 && (!frnew
Avi Kivity08dafab2011-10-16 13:19:17 +0200841 || int128_lt(frold->addr.start, frnew->addr.start)
842 || (int128_eq(frold->addr.start, frnew->addr.start)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300843 && !flatrange_equal(frold, frnew)))) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000844 /* In old but not in new, or in both but attributes changed. */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300845
Avi Kivityb8af1af2011-07-26 14:26:12 +0300846 if (!adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200847 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300848 }
849
Avi Kivity093bc2c2011-07-26 14:26:01 +0300850 ++iold;
851 } else if (frold && frnew && flatrange_equal(frold, frnew)) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000852 /* In both and unchanged (except logging may have changed) */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300853
Avi Kivityb8af1af2011-07-26 14:26:12 +0300854 if (adding) {
Avi Kivity50c1e142012-02-08 21:36:02 +0200855 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200856 if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
857 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
858 frold->dirty_log_mask,
859 frnew->dirty_log_mask);
860 }
861 if (frold->dirty_log_mask & ~frnew->dirty_log_mask) {
862 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop,
863 frold->dirty_log_mask,
864 frnew->dirty_log_mask);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300865 }
Avi Kivity5a583342011-07-26 14:26:02 +0300866 }
867
Avi Kivity093bc2c2011-07-26 14:26:01 +0300868 ++iold;
869 ++inew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300870 } else {
871 /* In new */
872
Avi Kivityb8af1af2011-07-26 14:26:12 +0300873 if (adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200874 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300875 }
876
Avi Kivity093bc2c2011-07-26 14:26:01 +0300877 ++inew;
878 }
879 }
Avi Kivityb8af1af2011-07-26 14:26:12 +0300880}
881
882
883static void address_space_update_topology(AddressSpace *as)
884{
Paolo Bonzini856d7242013-05-06 11:57:21 +0200885 FlatView *old_view = address_space_get_flatview(as);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200886 FlatView *new_view = generate_memory_topology(as->root);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300887
888 address_space_update_topology_pass(as, old_view, new_view, false);
889 address_space_update_topology_pass(as, old_view, new_view, true);
890
Paolo Bonzini374f2982013-05-17 12:37:03 +0200891 /* Writes are protected by the BQL. */
892 atomic_rcu_set(&as->current_map, new_view);
893 call_rcu(old_view, flatview_unref, rcu);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200894
895 /* Note that all the old MemoryRegions are still alive up to this
896 * point. This relieves most MemoryListeners from the need to
897 * ref/unref the MemoryRegions they get---unless they use them
898 * outside the iothread mutex, in which case precise reference
899 * counting is necessary.
900 */
901 flatview_unref(old_view);
902
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300903 address_space_update_ioeventfds(as);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300904}
905
Avi Kivity4ef4db82011-07-26 14:26:13 +0300906void memory_region_transaction_begin(void)
907{
Jan Kiszkabb880de2012-08-23 13:02:32 +0200908 qemu_flush_coalesced_mmio_buffer();
Avi Kivity4ef4db82011-07-26 14:26:13 +0300909 ++memory_region_transaction_depth;
910}
911
912void memory_region_transaction_commit(void)
913{
Avi Kivity0d673e32012-10-02 15:28:50 +0200914 AddressSpace *as;
915
Avi Kivity4ef4db82011-07-26 14:26:13 +0300916 assert(memory_region_transaction_depth);
Jan Kiszka8d04fb52017-02-23 18:29:11 +0000917 assert(qemu_mutex_iothread_locked());
918
Avi Kivity4ef4db82011-07-26 14:26:13 +0300919 --memory_region_transaction_depth;
Gonglei4dc56152014-05-08 11:47:32 +0800920 if (!memory_region_transaction_depth) {
921 if (memory_region_update_pending) {
922 MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
Jan Kiszka02e2b952012-08-23 13:02:31 +0200923
Gonglei4dc56152014-05-08 11:47:32 +0800924 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
925 address_space_update_topology(as);
926 }
Xu, Anthonyade9c1a2017-03-22 17:53:35 +0000927 memory_region_update_pending = false;
Gonglei4dc56152014-05-08 11:47:32 +0800928 MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
929 } else if (ioeventfd_update_pending) {
930 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
931 address_space_update_ioeventfds(as);
932 }
Xu, Anthonyade9c1a2017-03-22 17:53:35 +0000933 ioeventfd_update_pending = false;
Jan Kiszka02e2b952012-08-23 13:02:31 +0200934 }
Gonglei4dc56152014-05-08 11:47:32 +0800935 }
Avi Kivity4ef4db82011-07-26 14:26:13 +0300936}
937
Avi Kivity545e92e2011-08-08 19:58:48 +0300938static void memory_region_destructor_none(MemoryRegion *mr)
939{
940}
941
942static void memory_region_destructor_ram(MemoryRegion *mr)
943{
Fam Zhengf1060c52016-03-01 14:18:22 +0800944 qemu_ram_free(mr->ram_block);
Avi Kivity545e92e2011-08-08 19:58:48 +0300945}
946
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700947static bool memory_region_need_escape(char c)
948{
949 return c == '/' || c == '[' || c == '\\' || c == ']';
950}
951
952static char *memory_region_escape_name(const char *name)
953{
954 const char *p;
955 char *escaped, *q;
956 uint8_t c;
957 size_t bytes = 0;
958
959 for (p = name; *p; p++) {
960 bytes += memory_region_need_escape(*p) ? 4 : 1;
961 }
962 if (bytes == p - name) {
963 return g_memdup(name, bytes + 1);
964 }
965
966 escaped = g_malloc(bytes + 1);
967 for (p = name, q = escaped; *p; p++) {
968 c = *p;
969 if (unlikely(memory_region_need_escape(c))) {
970 *q++ = '\\';
971 *q++ = 'x';
972 *q++ = "0123456789abcdef"[c >> 4];
973 c = "0123456789abcdef"[c & 15];
974 }
975 *q++ = c;
976 }
977 *q = 0;
978 return escaped;
979}
980
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000981static void memory_region_do_init(MemoryRegion *mr,
982 Object *owner,
983 const char *name,
984 uint64_t size)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300985{
Avi Kivity08dafab2011-10-16 13:19:17 +0200986 mr->size = int128_make64(size);
987 if (size == UINT64_MAX) {
988 mr->size = int128_2_64();
989 }
Peter Maydell302fa282014-08-19 20:05:46 +0100990 mr->name = g_strdup(name);
Paolo Bonzini612263c2015-12-09 11:44:25 +0100991 mr->owner = owner;
Gonglei58eaa212016-02-22 16:34:55 +0800992 mr->ram_block = NULL;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700993
994 if (name) {
Peter Crosthwaite843ef732014-08-19 23:56:26 -0700995 char *escaped_name = memory_region_escape_name(name);
996 char *name_array = g_strdup_printf("%s[*]", escaped_name);
Paolo Bonzini612263c2015-12-09 11:44:25 +0100997
998 if (!owner) {
999 owner = container_get(qdev_get_machine(), "/unattached");
1000 }
1001
Peter Crosthwaite843ef732014-08-19 23:56:26 -07001002 object_property_add_child(owner, name_array, OBJECT(mr), &error_abort);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001003 object_unref(OBJECT(mr));
Peter Crosthwaite843ef732014-08-19 23:56:26 -07001004 g_free(name_array);
1005 g_free(escaped_name);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001006 }
1007}
1008
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001009void memory_region_init(MemoryRegion *mr,
1010 Object *owner,
1011 const char *name,
1012 uint64_t size)
1013{
1014 object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
1015 memory_region_do_init(mr, owner, name, size);
1016}
1017
Eric Blaked7bce992016-01-29 06:48:55 -07001018static void memory_region_get_addr(Object *obj, Visitor *v, const char *name,
1019 void *opaque, Error **errp)
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001020{
1021 MemoryRegion *mr = MEMORY_REGION(obj);
1022 uint64_t value = mr->addr;
1023
Eric Blake51e72bc2016-01-29 06:48:54 -07001024 visit_type_uint64(v, name, &value, errp);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001025}
1026
Eric Blaked7bce992016-01-29 06:48:55 -07001027static void memory_region_get_container(Object *obj, Visitor *v,
1028 const char *name, void *opaque,
1029 Error **errp)
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001030{
1031 MemoryRegion *mr = MEMORY_REGION(obj);
1032 gchar *path = (gchar *)"";
1033
1034 if (mr->container) {
1035 path = object_get_canonical_path(OBJECT(mr->container));
1036 }
Eric Blake51e72bc2016-01-29 06:48:54 -07001037 visit_type_str(v, name, &path, errp);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001038 if (mr->container) {
1039 g_free(path);
1040 }
1041}
1042
1043static Object *memory_region_resolve_container(Object *obj, void *opaque,
1044 const char *part)
1045{
1046 MemoryRegion *mr = MEMORY_REGION(obj);
1047
1048 return OBJECT(mr->container);
1049}
1050
Eric Blaked7bce992016-01-29 06:48:55 -07001051static void memory_region_get_priority(Object *obj, Visitor *v,
1052 const char *name, void *opaque,
1053 Error **errp)
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001054{
1055 MemoryRegion *mr = MEMORY_REGION(obj);
1056 int32_t value = mr->priority;
1057
Eric Blake51e72bc2016-01-29 06:48:54 -07001058 visit_type_int32(v, name, &value, errp);
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001059}
1060
Eric Blaked7bce992016-01-29 06:48:55 -07001061static void memory_region_get_size(Object *obj, Visitor *v, const char *name,
1062 void *opaque, Error **errp)
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001063{
1064 MemoryRegion *mr = MEMORY_REGION(obj);
1065 uint64_t value = memory_region_size(mr);
1066
Eric Blake51e72bc2016-01-29 06:48:54 -07001067 visit_type_uint64(v, name, &value, errp);
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001068}
1069
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001070static void memory_region_initfn(Object *obj)
1071{
1072 MemoryRegion *mr = MEMORY_REGION(obj);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001073 ObjectProperty *op;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001074
1075 mr->ops = &unassigned_mem_ops;
1076 mr->enabled = true;
1077 mr->romd_mode = true;
Jan Kiszka196ea132015-06-18 18:47:20 +02001078 mr->global_locking = true;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001079 mr->destructor = memory_region_destructor_none;
1080 QTAILQ_INIT(&mr->subregions);
1081 QTAILQ_INIT(&mr->coalesced);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001082
1083 op = object_property_add(OBJECT(mr), "container",
1084 "link<" TYPE_MEMORY_REGION ">",
1085 memory_region_get_container,
1086 NULL, /* memory_region_set_container */
1087 NULL, NULL, &error_abort);
1088 op->resolve = memory_region_resolve_container;
1089
1090 object_property_add(OBJECT(mr), "addr", "uint64",
1091 memory_region_get_addr,
1092 NULL, /* memory_region_set_addr */
1093 NULL, NULL, &error_abort);
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001094 object_property_add(OBJECT(mr), "priority", "uint32",
1095 memory_region_get_priority,
1096 NULL, /* memory_region_set_priority */
1097 NULL, NULL, &error_abort);
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001098 object_property_add(OBJECT(mr), "size", "uint64",
1099 memory_region_get_size,
1100 NULL, /* memory_region_set_size, */
1101 NULL, NULL, &error_abort);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001102}
1103
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001104static void iommu_memory_region_initfn(Object *obj)
1105{
1106 MemoryRegion *mr = MEMORY_REGION(obj);
1107
1108 mr->is_iommu = true;
1109}
1110
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001111static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
1112 unsigned size)
1113{
1114#ifdef DEBUG_UNASSIGNED
1115 printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
1116#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001117 if (current_cpu != NULL) {
1118 cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001119 }
Jan Kiszka68a74392013-09-02 18:43:31 +02001120 return 0;
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001121}
1122
1123static void unassigned_mem_write(void *opaque, hwaddr addr,
1124 uint64_t val, unsigned size)
1125{
1126#ifdef DEBUG_UNASSIGNED
1127 printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val);
1128#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001129 if (current_cpu != NULL) {
1130 cpu_unassigned_access(current_cpu, addr, true, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001131 }
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001132}
1133
Paolo Bonzinid1970632013-05-24 13:23:38 +02001134static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
1135 unsigned size, bool is_write)
1136{
1137 return false;
1138}
1139
1140const MemoryRegionOps unassigned_mem_ops = {
1141 .valid.accepts = unassigned_mem_accepts,
1142 .endianness = DEVICE_NATIVE_ENDIAN,
1143};
1144
Alex Williamson4a2e2422016-10-31 09:53:03 -06001145static uint64_t memory_region_ram_device_read(void *opaque,
1146 hwaddr addr, unsigned size)
1147{
1148 MemoryRegion *mr = opaque;
1149 uint64_t data = (uint64_t)~0;
1150
1151 switch (size) {
1152 case 1:
1153 data = *(uint8_t *)(mr->ram_block->host + addr);
1154 break;
1155 case 2:
1156 data = *(uint16_t *)(mr->ram_block->host + addr);
1157 break;
1158 case 4:
1159 data = *(uint32_t *)(mr->ram_block->host + addr);
1160 break;
1161 case 8:
1162 data = *(uint64_t *)(mr->ram_block->host + addr);
1163 break;
1164 }
1165
1166 trace_memory_region_ram_device_read(get_cpu_index(), mr, addr, data, size);
1167
1168 return data;
1169}
1170
1171static void memory_region_ram_device_write(void *opaque, hwaddr addr,
1172 uint64_t data, unsigned size)
1173{
1174 MemoryRegion *mr = opaque;
1175
1176 trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size);
1177
1178 switch (size) {
1179 case 1:
1180 *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data;
1181 break;
1182 case 2:
1183 *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data;
1184 break;
1185 case 4:
1186 *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data;
1187 break;
1188 case 8:
1189 *(uint64_t *)(mr->ram_block->host + addr) = data;
1190 break;
1191 }
1192}
1193
1194static const MemoryRegionOps ram_device_mem_ops = {
1195 .read = memory_region_ram_device_read,
1196 .write = memory_region_ram_device_write,
Yongji Xiec99a29e2017-02-27 12:52:44 +08001197 .endianness = DEVICE_HOST_ENDIAN,
Alex Williamson4a2e2422016-10-31 09:53:03 -06001198 .valid = {
1199 .min_access_size = 1,
1200 .max_access_size = 8,
1201 .unaligned = true,
1202 },
1203 .impl = {
1204 .min_access_size = 1,
1205 .max_access_size = 8,
1206 .unaligned = true,
1207 },
1208};
1209
Paolo Bonzinid2702032013-05-24 11:55:06 +02001210bool memory_region_access_valid(MemoryRegion *mr,
1211 hwaddr addr,
1212 unsigned size,
1213 bool is_write)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001214{
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001215 int access_size_min, access_size_max;
1216 int access_size, i;
Avi Kivity897fa7c2011-11-13 13:05:27 +02001217
Avi Kivity093bc2c2011-07-26 14:26:01 +03001218 if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
1219 return false;
1220 }
1221
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001222 if (!mr->ops->valid.accepts) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001223 return true;
1224 }
1225
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001226 access_size_min = mr->ops->valid.min_access_size;
1227 if (!mr->ops->valid.min_access_size) {
1228 access_size_min = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001229 }
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001230
1231 access_size_max = mr->ops->valid.max_access_size;
1232 if (!mr->ops->valid.max_access_size) {
1233 access_size_max = 4;
1234 }
1235
1236 access_size = MAX(MIN(size, access_size_max), access_size_min);
1237 for (i = 0; i < size; i += access_size) {
1238 if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
1239 is_write)) {
1240 return false;
1241 }
1242 }
1243
Avi Kivity093bc2c2011-07-26 14:26:01 +03001244 return true;
1245}
1246
Peter Maydellcc05c432015-04-26 16:49:23 +01001247static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
1248 hwaddr addr,
1249 uint64_t *pval,
1250 unsigned size,
1251 MemTxAttrs attrs)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001252{
Peter Maydellcc05c432015-04-26 16:49:23 +01001253 *pval = 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001254
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001255 if (mr->ops->read) {
Peter Maydellcc05c432015-04-26 16:49:23 +01001256 return access_with_adjusted_size(addr, pval, size,
1257 mr->ops->impl.min_access_size,
1258 mr->ops->impl.max_access_size,
1259 memory_region_read_accessor,
1260 mr, attrs);
1261 } else if (mr->ops->read_with_attrs) {
1262 return access_with_adjusted_size(addr, pval, size,
1263 mr->ops->impl.min_access_size,
1264 mr->ops->impl.max_access_size,
1265 memory_region_read_with_attrs_accessor,
1266 mr, attrs);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001267 } else {
Peter Maydellcc05c432015-04-26 16:49:23 +01001268 return access_with_adjusted_size(addr, pval, size, 1, 4,
1269 memory_region_oldmmio_read_accessor,
1270 mr, attrs);
Avi Kivity74901c32011-07-26 14:26:10 +03001271 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001272}
1273
Peter Maydell3b643492015-04-26 16:49:23 +01001274MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
1275 hwaddr addr,
1276 uint64_t *pval,
1277 unsigned size,
1278 MemTxAttrs attrs)
Avi Kivitya621f382012-01-02 13:12:08 +02001279{
Peter Maydellcc05c432015-04-26 16:49:23 +01001280 MemTxResult r;
1281
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001282 if (!memory_region_access_valid(mr, addr, size, false)) {
1283 *pval = unassigned_mem_read(mr, addr, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001284 return MEMTX_DECODE_ERROR;
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001285 }
Avi Kivitya621f382012-01-02 13:12:08 +02001286
Peter Maydellcc05c432015-04-26 16:49:23 +01001287 r = memory_region_dispatch_read1(mr, addr, pval, size, attrs);
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001288 adjust_endianness(mr, pval, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001289 return r;
Avi Kivitya621f382012-01-02 13:12:08 +02001290}
1291
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03001292/* Return true if an eventfd was signalled */
1293static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr,
1294 hwaddr addr,
1295 uint64_t data,
1296 unsigned size,
1297 MemTxAttrs attrs)
1298{
1299 MemoryRegionIoeventfd ioeventfd = {
1300 .addr = addrrange_make(int128_make64(addr), int128_make64(size)),
1301 .data = data,
1302 };
1303 unsigned i;
1304
1305 for (i = 0; i < mr->ioeventfd_nb; i++) {
1306 ioeventfd.match_data = mr->ioeventfds[i].match_data;
1307 ioeventfd.e = mr->ioeventfds[i].e;
1308
1309 if (memory_region_ioeventfd_equal(ioeventfd, mr->ioeventfds[i])) {
1310 event_notifier_set(ioeventfd.e);
1311 return true;
1312 }
1313 }
1314
1315 return false;
1316}
1317
Peter Maydell3b643492015-04-26 16:49:23 +01001318MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
1319 hwaddr addr,
1320 uint64_t data,
1321 unsigned size,
1322 MemTxAttrs attrs)
Avi Kivitya621f382012-01-02 13:12:08 +02001323{
Avi Kivity897fa7c2011-11-13 13:05:27 +02001324 if (!memory_region_access_valid(mr, addr, size, true)) {
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001325 unassigned_mem_write(mr, addr, data, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001326 return MEMTX_DECODE_ERROR;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001327 }
1328
Avi Kivitya621f382012-01-02 13:12:08 +02001329 adjust_endianness(mr, &data, size);
1330
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03001331 if ((!kvm_eventfds_enabled()) &&
1332 memory_region_dispatch_write_eventfds(mr, addr, data, size, attrs)) {
1333 return MEMTX_OK;
1334 }
1335
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001336 if (mr->ops->write) {
Peter Maydellcc05c432015-04-26 16:49:23 +01001337 return access_with_adjusted_size(addr, &data, size,
1338 mr->ops->impl.min_access_size,
1339 mr->ops->impl.max_access_size,
1340 memory_region_write_accessor, mr,
1341 attrs);
1342 } else if (mr->ops->write_with_attrs) {
1343 return
1344 access_with_adjusted_size(addr, &data, size,
1345 mr->ops->impl.min_access_size,
1346 mr->ops->impl.max_access_size,
1347 memory_region_write_with_attrs_accessor,
1348 mr, attrs);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001349 } else {
Peter Maydellcc05c432015-04-26 16:49:23 +01001350 return access_with_adjusted_size(addr, &data, size, 1, 4,
1351 memory_region_oldmmio_write_accessor,
1352 mr, attrs);
Avi Kivity74901c32011-07-26 14:26:10 +03001353 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001354}
1355
Avi Kivity093bc2c2011-07-26 14:26:01 +03001356void memory_region_init_io(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001357 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001358 const MemoryRegionOps *ops,
1359 void *opaque,
1360 const char *name,
1361 uint64_t size)
1362{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001363 memory_region_init(mr, owner, name, size);
Pavel Fedin6d6d2ab2015-08-13 11:26:21 +01001364 mr->ops = ops ? ops : &unassigned_mem_ops;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001365 mr->opaque = opaque;
Avi Kivity14a3c102011-07-26 14:26:06 +03001366 mr->terminates = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001367}
1368
Peter Maydell1cfe48c2017-07-07 15:42:49 +01001369void memory_region_init_ram_nomigrate(MemoryRegion *mr,
1370 Object *owner,
1371 const char *name,
1372 uint64_t size,
1373 Error **errp)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001374{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001375 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001376 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001377 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +03001378 mr->destructor = memory_region_destructor_ram;
Fam Zheng8e41fb62016-03-01 14:18:21 +08001379 mr->ram_block = qemu_ram_alloc(size, mr, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001380 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001381}
1382
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001383void memory_region_init_resizeable_ram(MemoryRegion *mr,
1384 Object *owner,
1385 const char *name,
1386 uint64_t size,
1387 uint64_t max_size,
1388 void (*resized)(const char*,
1389 uint64_t length,
1390 void *host),
1391 Error **errp)
1392{
1393 memory_region_init(mr, owner, name, size);
1394 mr->ram = true;
1395 mr->terminates = true;
1396 mr->destructor = memory_region_destructor_ram;
Fam Zheng8e41fb62016-03-01 14:18:21 +08001397 mr->ram_block = qemu_ram_alloc_resizeable(size, max_size, resized,
1398 mr, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001399 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001400}
1401
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001402#ifdef __linux__
1403void memory_region_init_ram_from_file(MemoryRegion *mr,
1404 struct Object *owner,
1405 const char *name,
1406 uint64_t size,
Paolo Bonzinidbcb8982014-06-10 19:15:24 +08001407 bool share,
Paolo Bonzini7f56e742014-05-14 17:43:20 +08001408 const char *path,
1409 Error **errp)
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001410{
1411 memory_region_init(mr, owner, name, size);
1412 mr->ram = true;
1413 mr->terminates = true;
1414 mr->destructor = memory_region_destructor_ram;
Fam Zheng8e41fb62016-03-01 14:18:21 +08001415 mr->ram_block = qemu_ram_alloc_from_file(size, mr, share, path, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001416 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001417}
Marc-André Lureaufea617c2017-06-02 18:12:24 +04001418
1419void memory_region_init_ram_from_fd(MemoryRegion *mr,
1420 struct Object *owner,
1421 const char *name,
1422 uint64_t size,
1423 bool share,
1424 int fd,
1425 Error **errp)
1426{
1427 memory_region_init(mr, owner, name, size);
1428 mr->ram = true;
1429 mr->terminates = true;
1430 mr->destructor = memory_region_destructor_ram;
1431 mr->ram_block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp);
1432 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
1433}
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001434#endif
1435
Avi Kivity093bc2c2011-07-26 14:26:01 +03001436void memory_region_init_ram_ptr(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001437 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001438 const char *name,
1439 uint64_t size,
1440 void *ptr)
1441{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001442 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001443 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001444 mr->terminates = true;
Eduardo Habkostfc3e7662015-11-06 19:20:05 -02001445 mr->destructor = memory_region_destructor_ram;
Paolo Bonzini677e7802015-03-23 10:53:21 +01001446 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Hu Taoef701d72014-09-09 13:27:54 +08001447
1448 /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
1449 assert(ptr != NULL);
Fam Zheng8e41fb62016-03-01 14:18:21 +08001450 mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001451}
1452
Alex Williamson21e00fa2016-10-31 09:53:03 -06001453void memory_region_init_ram_device_ptr(MemoryRegion *mr,
1454 Object *owner,
1455 const char *name,
1456 uint64_t size,
1457 void *ptr)
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301458{
Alex Williamson21e00fa2016-10-31 09:53:03 -06001459 memory_region_init_ram_ptr(mr, owner, name, size, ptr);
1460 mr->ram_device = true;
Alex Williamson4a2e2422016-10-31 09:53:03 -06001461 mr->ops = &ram_device_mem_ops;
1462 mr->opaque = mr;
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301463}
1464
Avi Kivity093bc2c2011-07-26 14:26:01 +03001465void memory_region_init_alias(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001466 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001467 const char *name,
1468 MemoryRegion *orig,
Avi Kivitya8170e52012-10-23 12:30:10 +02001469 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001470 uint64_t size)
1471{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001472 memory_region_init(mr, owner, name, size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001473 mr->alias = orig;
1474 mr->alias_offset = offset;
1475}
1476
Peter Maydellb59821a2017-07-07 15:42:50 +01001477void memory_region_init_rom_nomigrate(MemoryRegion *mr,
1478 struct Object *owner,
1479 const char *name,
1480 uint64_t size,
1481 Error **errp)
Peter Maydella1777f72016-07-04 13:06:35 +01001482{
1483 memory_region_init(mr, owner, name, size);
1484 mr->ram = true;
1485 mr->readonly = true;
1486 mr->terminates = true;
1487 mr->destructor = memory_region_destructor_ram;
1488 mr->ram_block = qemu_ram_alloc(size, mr, errp);
1489 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
1490}
1491
Peter Maydellb59821a2017-07-07 15:42:50 +01001492void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
1493 Object *owner,
1494 const MemoryRegionOps *ops,
1495 void *opaque,
1496 const char *name,
1497 uint64_t size,
1498 Error **errp)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001499{
Peter Maydell39e0b032016-07-04 13:06:35 +01001500 assert(ops);
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001501 memory_region_init(mr, owner, name, size);
Avi Kivity7bc2b9c2011-08-25 14:56:14 +03001502 mr->ops = ops;
Avi Kivity75f59412011-08-26 00:35:15 +03001503 mr->opaque = opaque;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001504 mr->terminates = true;
Avi Kivity75c578d2012-01-02 15:40:52 +02001505 mr->rom_device = true;
Paolo Bonzini58268c82016-09-14 11:05:59 +02001506 mr->destructor = memory_region_destructor_ram;
Fam Zheng8e41fb62016-03-01 14:18:21 +08001507 mr->ram_block = qemu_ram_alloc(size, mr, errp);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001508}
1509
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001510void memory_region_init_iommu(void *_iommu_mr,
1511 size_t instance_size,
1512 const char *mrtypename,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001513 Object *owner,
Avi Kivity30951152012-10-30 13:47:46 +02001514 const char *name,
1515 uint64_t size)
1516{
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001517 struct IOMMUMemoryRegion *iommu_mr;
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001518 struct MemoryRegion *mr;
1519
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001520 object_initialize(_iommu_mr, instance_size, mrtypename);
1521 mr = MEMORY_REGION(_iommu_mr);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001522 memory_region_do_init(mr, owner, name, size);
1523 iommu_mr = IOMMU_MEMORY_REGION(mr);
Avi Kivity30951152012-10-30 13:47:46 +02001524 mr->terminates = true; /* then re-forwards */
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001525 QLIST_INIT(&iommu_mr->iommu_notify);
1526 iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE;
Avi Kivity30951152012-10-30 13:47:46 +02001527}
1528
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001529static void memory_region_finalize(Object *obj)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001530{
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001531 MemoryRegion *mr = MEMORY_REGION(obj);
1532
Paolo Bonzini2e2b8eb2015-10-01 10:59:50 +02001533 assert(!mr->container);
1534
1535 /* We know the region is not visible in any address space (it
1536 * does not have a container and cannot be a root either because
1537 * it has no references, so we can blindly clear mr->enabled.
1538 * memory_region_set_enabled instead could trigger a transaction
1539 * and cause an infinite loop.
1540 */
1541 mr->enabled = false;
1542 memory_region_transaction_begin();
1543 while (!QTAILQ_EMPTY(&mr->subregions)) {
1544 MemoryRegion *subregion = QTAILQ_FIRST(&mr->subregions);
1545 memory_region_del_subregion(mr, subregion);
1546 }
1547 memory_region_transaction_commit();
1548
Avi Kivity545e92e2011-08-08 19:58:48 +03001549 mr->destructor(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001550 memory_region_clear_coalescing(mr);
Peter Maydell302fa282014-08-19 20:05:46 +01001551 g_free((char *)mr->name);
Anthony Liguori7267c092011-08-20 22:09:37 -05001552 g_free(mr->ioeventfds);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001553}
1554
Paolo Bonzini803c0812013-05-07 06:59:09 +02001555Object *memory_region_owner(MemoryRegion *mr)
1556{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001557 Object *obj = OBJECT(mr);
1558 return obj->parent;
Paolo Bonzini803c0812013-05-07 06:59:09 +02001559}
1560
Paolo Bonzini46637be2013-05-07 09:06:00 +02001561void memory_region_ref(MemoryRegion *mr)
1562{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001563 /* MMIO callbacks most likely will access data that belongs
1564 * to the owner, hence the need to ref/unref the owner whenever
1565 * the memory region is in use.
1566 *
1567 * The memory region is a child of its owner. As long as the
1568 * owner doesn't call unparent itself on the memory region,
1569 * ref-ing the owner will also keep the memory region alive.
Paolo Bonzini612263c2015-12-09 11:44:25 +01001570 * Memory regions without an owner are supposed to never go away;
1571 * we do not ref/unref them because it slows down DMA sensibly.
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001572 */
Paolo Bonzini612263c2015-12-09 11:44:25 +01001573 if (mr && mr->owner) {
1574 object_ref(mr->owner);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001575 }
1576}
1577
1578void memory_region_unref(MemoryRegion *mr)
1579{
Paolo Bonzini612263c2015-12-09 11:44:25 +01001580 if (mr && mr->owner) {
1581 object_unref(mr->owner);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001582 }
1583}
1584
Avi Kivity093bc2c2011-07-26 14:26:01 +03001585uint64_t memory_region_size(MemoryRegion *mr)
1586{
Avi Kivity08dafab2011-10-16 13:19:17 +02001587 if (int128_eq(mr->size, int128_2_64())) {
1588 return UINT64_MAX;
1589 }
1590 return int128_get64(mr->size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001591}
1592
Peter Crosthwaite5d546d42014-08-14 23:55:03 -07001593const char *memory_region_name(const MemoryRegion *mr)
Avi Kivity8991c792011-12-20 15:53:11 +02001594{
Peter Crosthwaited1dd32a2014-08-25 20:10:24 -07001595 if (!mr->name) {
1596 ((MemoryRegion *)mr)->name =
1597 object_get_canonical_path_component(OBJECT(mr));
1598 }
Peter Maydell302fa282014-08-19 20:05:46 +01001599 return mr->name;
Avi Kivity8991c792011-12-20 15:53:11 +02001600}
1601
Alex Williamson21e00fa2016-10-31 09:53:03 -06001602bool memory_region_is_ram_device(MemoryRegion *mr)
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301603{
Alex Williamson21e00fa2016-10-31 09:53:03 -06001604 return mr->ram_device;
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301605}
1606
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +01001607uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
Avi Kivity55043ba2011-12-15 17:20:34 +02001608{
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001609 uint8_t mask = mr->dirty_log_mask;
Paolo Bonziniadaad612016-09-22 16:09:08 +02001610 if (global_dirty_log && mr->ram_block) {
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001611 mask |= (1 << DIRTY_MEMORY_MIGRATION);
1612 }
1613 return mask;
Avi Kivity55043ba2011-12-15 17:20:34 +02001614}
1615
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +01001616bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
1617{
1618 return memory_region_get_dirty_log_mask(mr) & (1 << client);
1619}
1620
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001621static void memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr)
Peter Xu5bf3d312016-09-23 13:02:27 +08001622{
1623 IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE;
1624 IOMMUNotifier *iommu_notifier;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001625 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
Peter Xu5bf3d312016-09-23 13:02:27 +08001626
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001627 IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
Peter Xu5bf3d312016-09-23 13:02:27 +08001628 flags |= iommu_notifier->notifier_flags;
1629 }
1630
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001631 if (flags != iommu_mr->iommu_notify_flags && imrc->notify_flag_changed) {
1632 imrc->notify_flag_changed(iommu_mr,
1633 iommu_mr->iommu_notify_flags,
1634 flags);
Peter Xu5bf3d312016-09-23 13:02:27 +08001635 }
1636
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001637 iommu_mr->iommu_notify_flags = flags;
Peter Xu5bf3d312016-09-23 13:02:27 +08001638}
1639
Peter Xucdb30812016-09-23 13:02:26 +08001640void memory_region_register_iommu_notifier(MemoryRegion *mr,
1641 IOMMUNotifier *n)
David Gibson06866572013-05-14 19:13:56 +10001642{
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001643 IOMMUMemoryRegion *iommu_mr;
1644
Jason Wangefcd38c2016-12-30 18:09:17 +08001645 if (mr->alias) {
1646 memory_region_register_iommu_notifier(mr->alias, n);
1647 return;
1648 }
1649
Peter Xucdb30812016-09-23 13:02:26 +08001650 /* We need to register for at least one bitfield */
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001651 iommu_mr = IOMMU_MEMORY_REGION(mr);
Peter Xucdb30812016-09-23 13:02:26 +08001652 assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
Peter Xu698feb52017-04-07 18:59:07 +08001653 assert(n->start <= n->end);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001654 QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node);
1655 memory_region_update_iommu_notify_flags(iommu_mr);
David Gibson06866572013-05-14 19:13:56 +10001656}
1657
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001658uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr)
David Gibsona788f222015-09-30 12:13:55 +10001659{
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001660 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1661
1662 if (imrc->get_min_page_size) {
1663 return imrc->get_min_page_size(iommu_mr);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001664 }
1665 return TARGET_PAGE_SIZE;
1666}
1667
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001668void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001669{
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001670 MemoryRegion *mr = MEMORY_REGION(iommu_mr);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001671 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001672 hwaddr addr, granularity;
David Gibsona788f222015-09-30 12:13:55 +10001673 IOMMUTLBEntry iotlb;
1674
Peter Xufaa362e2017-04-07 18:59:11 +08001675 /* If the IOMMU has its own replay callback, override */
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001676 if (imrc->replay) {
1677 imrc->replay(iommu_mr, n);
Peter Xufaa362e2017-04-07 18:59:11 +08001678 return;
1679 }
1680
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001681 granularity = memory_region_iommu_get_min_page_size(iommu_mr);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001682
David Gibsona788f222015-09-30 12:13:55 +10001683 for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001684 iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE);
David Gibsona788f222015-09-30 12:13:55 +10001685 if (iotlb.perm != IOMMU_NONE) {
1686 n->notify(n, &iotlb);
1687 }
1688
1689 /* if (2^64 - MR size) < granularity, it's possible to get an
1690 * infinite loop here. This should catch such a wraparound */
1691 if ((addr + granularity) < addr) {
1692 break;
1693 }
1694 }
1695}
1696
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001697void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr)
Peter Xude472e42017-04-07 18:59:09 +08001698{
1699 IOMMUNotifier *notifier;
1700
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001701 IOMMU_NOTIFIER_FOREACH(notifier, iommu_mr) {
1702 memory_region_iommu_replay(iommu_mr, notifier);
Peter Xude472e42017-04-07 18:59:09 +08001703 }
1704}
1705
Peter Xucdb30812016-09-23 13:02:26 +08001706void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
1707 IOMMUNotifier *n)
David Gibson06866572013-05-14 19:13:56 +10001708{
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001709 IOMMUMemoryRegion *iommu_mr;
1710
Jason Wangefcd38c2016-12-30 18:09:17 +08001711 if (mr->alias) {
1712 memory_region_unregister_iommu_notifier(mr->alias, n);
1713 return;
1714 }
Peter Xucdb30812016-09-23 13:02:26 +08001715 QLIST_REMOVE(n, node);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001716 iommu_mr = IOMMU_MEMORY_REGION(mr);
1717 memory_region_update_iommu_notify_flags(iommu_mr);
David Gibson06866572013-05-14 19:13:56 +10001718}
1719
Peter Xubd2bfa42017-04-07 18:59:10 +08001720void memory_region_notify_one(IOMMUNotifier *notifier,
1721 IOMMUTLBEntry *entry)
David Gibson06866572013-05-14 19:13:56 +10001722{
Peter Xucdb30812016-09-23 13:02:26 +08001723 IOMMUNotifierFlag request_flags;
1724
Peter Xubd2bfa42017-04-07 18:59:10 +08001725 /*
1726 * Skip the notification if the notification does not overlap
1727 * with registered range.
1728 */
1729 if (notifier->start > entry->iova + entry->addr_mask + 1 ||
1730 notifier->end < entry->iova) {
1731 return;
1732 }
Peter Xucdb30812016-09-23 13:02:26 +08001733
Peter Xubd2bfa42017-04-07 18:59:10 +08001734 if (entry->perm & IOMMU_RW) {
Peter Xucdb30812016-09-23 13:02:26 +08001735 request_flags = IOMMU_NOTIFIER_MAP;
1736 } else {
1737 request_flags = IOMMU_NOTIFIER_UNMAP;
1738 }
1739
Peter Xubd2bfa42017-04-07 18:59:10 +08001740 if (notifier->notifier_flags & request_flags) {
1741 notifier->notify(notifier, entry);
1742 }
1743}
1744
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001745void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
Peter Xubd2bfa42017-04-07 18:59:10 +08001746 IOMMUTLBEntry entry)
1747{
1748 IOMMUNotifier *iommu_notifier;
1749
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001750 assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr)));
Peter Xubd2bfa42017-04-07 18:59:10 +08001751
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001752 IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
Peter Xubd2bfa42017-04-07 18:59:10 +08001753 memory_region_notify_one(iommu_notifier, &entry);
Peter Xucdb30812016-09-23 13:02:26 +08001754 }
David Gibson06866572013-05-14 19:13:56 +10001755}
1756
Avi Kivity093bc2c2011-07-26 14:26:01 +03001757void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
1758{
Avi Kivity5a583342011-07-26 14:26:02 +03001759 uint8_t mask = 1 << client;
Paolo Bonzinideb809e2015-07-14 13:56:53 +02001760 uint8_t old_logging;
Avi Kivity5a583342011-07-26 14:26:02 +03001761
Paolo Bonzinidbddac62015-03-23 10:31:53 +01001762 assert(client == DIRTY_MEMORY_VGA);
Paolo Bonzinideb809e2015-07-14 13:56:53 +02001763 old_logging = mr->vga_logging_count;
1764 mr->vga_logging_count += log ? 1 : -1;
1765 if (!!old_logging == !!mr->vga_logging_count) {
1766 return;
1767 }
1768
Jan Kiszka59023ef2012-08-23 13:02:30 +02001769 memory_region_transaction_begin();
Avi Kivity5a583342011-07-26 14:26:02 +03001770 mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
Jan Kiszka22bde712012-11-05 16:45:56 +01001771 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001772 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001773}
1774
Avi Kivitya8170e52012-10-23 12:30:10 +02001775bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
1776 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001777{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001778 assert(mr->ram_block);
1779 return cpu_physical_memory_get_dirty(memory_region_get_ram_addr(mr) + addr,
1780 size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001781}
1782
Avi Kivitya8170e52012-10-23 12:30:10 +02001783void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
1784 hwaddr size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001785{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001786 assert(mr->ram_block);
1787 cpu_physical_memory_set_dirty_range(memory_region_get_ram_addr(mr) + addr,
1788 size,
Paolo Bonzini58d27072015-03-23 11:56:01 +01001789 memory_region_get_dirty_log_mask(mr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001790}
1791
Juan Quintela6c279db2012-10-17 20:24:28 +02001792bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
1793 hwaddr size, unsigned client)
1794{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001795 assert(mr->ram_block);
1796 return cpu_physical_memory_test_and_clear_dirty(
1797 memory_region_get_ram_addr(mr) + addr, size, client);
Juan Quintela6c279db2012-10-17 20:24:28 +02001798}
1799
Gerd Hoffmann8deaf122017-04-21 11:16:25 +02001800DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr,
1801 hwaddr addr,
1802 hwaddr size,
1803 unsigned client)
1804{
1805 assert(mr->ram_block);
1806 return cpu_physical_memory_snapshot_and_clear_dirty(
1807 memory_region_get_ram_addr(mr) + addr, size, client);
1808}
1809
1810bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap,
1811 hwaddr addr, hwaddr size)
1812{
1813 assert(mr->ram_block);
1814 return cpu_physical_memory_snapshot_get_dirty(snap,
1815 memory_region_get_ram_addr(mr) + addr, size);
1816}
Juan Quintela6c279db2012-10-17 20:24:28 +02001817
Avi Kivity093bc2c2011-07-26 14:26:01 +03001818void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
1819{
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001820 MemoryListener *listener;
Avi Kivity0d673e32012-10-02 15:28:50 +02001821 AddressSpace *as;
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001822 FlatView *view;
Avi Kivity5a583342011-07-26 14:26:02 +03001823 FlatRange *fr;
1824
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001825 /* If the same address space has multiple log_sync listeners, we
1826 * visit that address space's FlatView multiple times. But because
1827 * log_sync listeners are rare, it's still cheaper than walking each
1828 * address space once.
1829 */
1830 QTAILQ_FOREACH(listener, &memory_listeners, link) {
1831 if (!listener->log_sync) {
1832 continue;
1833 }
1834 as = listener->address_space;
1835 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001836 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity0d673e32012-10-02 15:28:50 +02001837 if (fr->mr == mr) {
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001838 MemoryRegionSection mrs = section_from_flat_range(fr, as);
1839 listener->log_sync(listener, &mrs);
Avi Kivity0d673e32012-10-02 15:28:50 +02001840 }
Avi Kivity5a583342011-07-26 14:26:02 +03001841 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001842 flatview_unref(view);
Avi Kivity5a583342011-07-26 14:26:02 +03001843 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001844}
1845
1846void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
1847{
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001848 if (mr->readonly != readonly) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02001849 memory_region_transaction_begin();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001850 mr->readonly = readonly;
Jan Kiszka22bde712012-11-05 16:45:56 +01001851 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001852 memory_region_transaction_commit();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001853 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001854}
1855
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001856void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001857{
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001858 if (mr->romd_mode != romd_mode) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02001859 memory_region_transaction_begin();
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001860 mr->romd_mode = romd_mode;
Jan Kiszka22bde712012-11-05 16:45:56 +01001861 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001862 memory_region_transaction_commit();
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001863 }
1864}
1865
Avi Kivitya8170e52012-10-23 12:30:10 +02001866void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
1867 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001868{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001869 assert(mr->ram_block);
1870 cpu_physical_memory_test_and_clear_dirty(
1871 memory_region_get_ram_addr(mr) + addr, size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001872}
1873
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001874int memory_region_get_fd(MemoryRegion *mr)
1875{
Paolo Bonzini4ff87572016-03-25 12:30:16 +01001876 int fd;
1877
1878 rcu_read_lock();
1879 while (mr->alias) {
1880 mr = mr->alias;
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001881 }
Paolo Bonzini4ff87572016-03-25 12:30:16 +01001882 fd = mr->ram_block->fd;
1883 rcu_read_unlock();
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001884
Paolo Bonzini4ff87572016-03-25 12:30:16 +01001885 return fd;
1886}
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001887
Avi Kivity093bc2c2011-07-26 14:26:01 +03001888void *memory_region_get_ram_ptr(MemoryRegion *mr)
1889{
Paolo Bonzini49b24af2015-12-16 10:30:47 +01001890 void *ptr;
1891 uint64_t offset = 0;
1892
1893 rcu_read_lock();
1894 while (mr->alias) {
1895 offset += mr->alias_offset;
1896 mr = mr->alias;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001897 }
Fam Zheng8e41fb62016-03-01 14:18:21 +08001898 assert(mr->ram_block);
Paolo Bonzini0878d0e2016-02-22 11:02:12 +01001899 ptr = qemu_map_ram_ptr(mr->ram_block, offset);
Paolo Bonzini49b24af2015-12-16 10:30:47 +01001900 rcu_read_unlock();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001901
Paolo Bonzini0878d0e2016-02-22 11:02:12 +01001902 return ptr;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001903}
1904
Paolo Bonzini07bdaa42016-03-25 12:55:08 +01001905MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset)
1906{
1907 RAMBlock *block;
1908
1909 block = qemu_ram_block_from_host(ptr, false, offset);
1910 if (!block) {
1911 return NULL;
1912 }
1913
1914 return block->mr;
1915}
1916
Fam Zheng7ebb2742016-03-01 14:18:20 +08001917ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
1918{
1919 return mr->ram_block ? mr->ram_block->offset : RAM_ADDR_INVALID;
1920}
1921
Paolo Bonzini37d7c082015-03-23 10:21:46 +01001922void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
1923{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001924 assert(mr->ram_block);
Paolo Bonzini37d7c082015-03-23 10:21:46 +01001925
Gongleifa53a0e2016-05-10 10:04:59 +08001926 qemu_ram_resize(mr->ram_block, newsize, errp);
Paolo Bonzini37d7c082015-03-23 10:21:46 +01001927}
1928
Avi Kivity0d673e32012-10-02 15:28:50 +02001929static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001930{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001931 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001932 FlatRange *fr;
1933 CoalescedMemoryRange *cmr;
1934 AddrRange tmp;
Avi Kivity95d29942012-10-02 18:21:54 +02001935 MemoryRegionSection section;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001936
Paolo Bonzini856d7242013-05-06 11:57:21 +02001937 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001938 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001939 if (fr->mr == mr) {
Avi Kivity95d29942012-10-02 18:21:54 +02001940 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +02001941 .address_space = as,
Avi Kivity95d29942012-10-02 18:21:54 +02001942 .offset_within_address_space = int128_get64(fr->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001943 .size = fr->addr.size,
Avi Kivity95d29942012-10-02 18:21:54 +02001944 };
1945
Paolo Bonzini9a546352016-09-22 16:23:06 +02001946 MEMORY_LISTENER_CALL(as, coalesced_mmio_del, Reverse, &section,
Avi Kivity95d29942012-10-02 18:21:54 +02001947 int128_get64(fr->addr.start),
1948 int128_get64(fr->addr.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001949 QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
1950 tmp = addrrange_shift(cmr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001951 int128_sub(fr->addr.start,
1952 int128_make64(fr->offset_in_region)));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001953 if (!addrrange_intersects(tmp, fr->addr)) {
1954 continue;
1955 }
1956 tmp = addrrange_intersection(tmp, fr->addr);
Paolo Bonzini9a546352016-09-22 16:23:06 +02001957 MEMORY_LISTENER_CALL(as, coalesced_mmio_add, Forward, &section,
Avi Kivity95d29942012-10-02 18:21:54 +02001958 int128_get64(tmp.start),
1959 int128_get64(tmp.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001960 }
1961 }
1962 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001963 flatview_unref(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001964}
1965
Avi Kivity0d673e32012-10-02 15:28:50 +02001966static void memory_region_update_coalesced_range(MemoryRegion *mr)
1967{
1968 AddressSpace *as;
1969
1970 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1971 memory_region_update_coalesced_range_as(mr, as);
1972 }
1973}
1974
Avi Kivity093bc2c2011-07-26 14:26:01 +03001975void memory_region_set_coalescing(MemoryRegion *mr)
1976{
1977 memory_region_clear_coalescing(mr);
Avi Kivity08dafab2011-10-16 13:19:17 +02001978 memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001979}
1980
1981void memory_region_add_coalescing(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001982 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001983 uint64_t size)
1984{
Anthony Liguori7267c092011-08-20 22:09:37 -05001985 CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001986
Avi Kivity08dafab2011-10-16 13:19:17 +02001987 cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001988 QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
1989 memory_region_update_coalesced_range(mr);
Jan Kiszkad4105152012-08-23 13:02:29 +02001990 memory_region_set_flush_coalesced(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001991}
1992
1993void memory_region_clear_coalescing(MemoryRegion *mr)
1994{
1995 CoalescedMemoryRange *cmr;
Fam Zhengab5b3db2014-06-13 14:34:41 +08001996 bool updated = false;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001997
Jan Kiszkad4105152012-08-23 13:02:29 +02001998 qemu_flush_coalesced_mmio_buffer();
1999 mr->flush_coalesced_mmio = false;
2000
Avi Kivity093bc2c2011-07-26 14:26:01 +03002001 while (!QTAILQ_EMPTY(&mr->coalesced)) {
2002 cmr = QTAILQ_FIRST(&mr->coalesced);
2003 QTAILQ_REMOVE(&mr->coalesced, cmr, link);
Anthony Liguori7267c092011-08-20 22:09:37 -05002004 g_free(cmr);
Fam Zhengab5b3db2014-06-13 14:34:41 +08002005 updated = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002006 }
Fam Zhengab5b3db2014-06-13 14:34:41 +08002007
2008 if (updated) {
2009 memory_region_update_coalesced_range(mr);
2010 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03002011}
2012
Jan Kiszkad4105152012-08-23 13:02:29 +02002013void memory_region_set_flush_coalesced(MemoryRegion *mr)
2014{
2015 mr->flush_coalesced_mmio = true;
2016}
2017
2018void memory_region_clear_flush_coalesced(MemoryRegion *mr)
2019{
2020 qemu_flush_coalesced_mmio_buffer();
2021 if (QTAILQ_EMPTY(&mr->coalesced)) {
2022 mr->flush_coalesced_mmio = false;
2023 }
2024}
2025
Jan Kiszka196ea132015-06-18 18:47:20 +02002026void memory_region_set_global_locking(MemoryRegion *mr)
2027{
2028 mr->global_locking = true;
2029}
2030
2031void memory_region_clear_global_locking(MemoryRegion *mr)
2032{
2033 mr->global_locking = false;
2034}
2035
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03002036static bool userspace_eventfd_warning;
2037
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002038void memory_region_add_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002039 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002040 unsigned size,
2041 bool match_data,
2042 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002043 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002044{
2045 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02002046 .addr.start = int128_make64(addr),
2047 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002048 .match_data = match_data,
2049 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002050 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002051 };
2052 unsigned i;
2053
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03002054 if (kvm_enabled() && (!(kvm_eventfds_enabled() ||
2055 userspace_eventfd_warning))) {
2056 userspace_eventfd_warning = true;
2057 error_report("Using eventfd without MMIO binding in KVM. "
2058 "Suboptimal performance expected");
2059 }
2060
Jason Wangb8aecea2015-11-06 16:02:45 +08002061 if (size) {
2062 adjust_endianness(mr, &mrfd.data, size);
2063 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02002064 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002065 for (i = 0; i < mr->ioeventfd_nb; ++i) {
2066 if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
2067 break;
2068 }
2069 }
2070 ++mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05002071 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002072 sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
2073 memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
2074 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
2075 mr->ioeventfds[i] = mrfd;
Gonglei4dc56152014-05-08 11:47:32 +08002076 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002077 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002078}
2079
2080void memory_region_del_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002081 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002082 unsigned size,
2083 bool match_data,
2084 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002085 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002086{
2087 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02002088 .addr.start = int128_make64(addr),
2089 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002090 .match_data = match_data,
2091 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002092 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002093 };
2094 unsigned i;
2095
Jason Wangb8aecea2015-11-06 16:02:45 +08002096 if (size) {
2097 adjust_endianness(mr, &mrfd.data, size);
2098 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02002099 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002100 for (i = 0; i < mr->ioeventfd_nb; ++i) {
2101 if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
2102 break;
2103 }
2104 }
2105 assert(i != mr->ioeventfd_nb);
2106 memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
2107 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
2108 --mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05002109 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002110 sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
Gonglei4dc56152014-05-08 11:47:32 +08002111 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002112 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002113}
2114
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002115static void memory_region_update_container_subregions(MemoryRegion *subregion)
Avi Kivity093bc2c2011-07-26 14:26:01 +03002116{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002117 MemoryRegion *mr = subregion->container;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002118 MemoryRegion *other;
2119
Jan Kiszka59023ef2012-08-23 13:02:30 +02002120 memory_region_transaction_begin();
2121
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02002122 memory_region_ref(subregion);
Avi Kivity093bc2c2011-07-26 14:26:01 +03002123 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03002124 if (subregion->priority >= other->priority) {
2125 QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
2126 goto done;
2127 }
2128 }
2129 QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
2130done:
Jan Kiszka22bde712012-11-05 16:45:56 +01002131 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002132 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03002133}
2134
Peter Crosthwaite05987012014-06-05 23:14:44 -07002135static void memory_region_add_subregion_common(MemoryRegion *mr,
2136 hwaddr offset,
2137 MemoryRegion *subregion)
2138{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002139 assert(!subregion->container);
2140 subregion->container = mr;
Peter Crosthwaite05987012014-06-05 23:14:44 -07002141 subregion->addr = offset;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002142 memory_region_update_container_subregions(subregion);
Peter Crosthwaite05987012014-06-05 23:14:44 -07002143}
Avi Kivity093bc2c2011-07-26 14:26:01 +03002144
2145void memory_region_add_subregion(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002146 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03002147 MemoryRegion *subregion)
2148{
Avi Kivity093bc2c2011-07-26 14:26:01 +03002149 subregion->priority = 0;
2150 memory_region_add_subregion_common(mr, offset, subregion);
2151}
2152
2153void memory_region_add_subregion_overlap(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002154 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03002155 MemoryRegion *subregion,
Marcel Apfelbauma1ff8ae2013-09-16 11:21:14 +03002156 int priority)
Avi Kivity093bc2c2011-07-26 14:26:01 +03002157{
Avi Kivity093bc2c2011-07-26 14:26:01 +03002158 subregion->priority = priority;
2159 memory_region_add_subregion_common(mr, offset, subregion);
2160}
2161
2162void memory_region_del_subregion(MemoryRegion *mr,
2163 MemoryRegion *subregion)
2164{
Jan Kiszka59023ef2012-08-23 13:02:30 +02002165 memory_region_transaction_begin();
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002166 assert(subregion->container == mr);
2167 subregion->container = NULL;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002168 QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02002169 memory_region_unref(subregion);
Jan Kiszka22bde712012-11-05 16:45:56 +01002170 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002171 memory_region_transaction_commit();
Avi Kivity6bba19b2011-09-14 11:54:58 +03002172}
2173
2174void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
2175{
2176 if (enabled == mr->enabled) {
2177 return;
2178 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02002179 memory_region_transaction_begin();
Avi Kivity6bba19b2011-09-14 11:54:58 +03002180 mr->enabled = enabled;
Jan Kiszka22bde712012-11-05 16:45:56 +01002181 memory_region_update_pending = true;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002182 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03002183}
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002184
Michael S. Tsirkine7af4c62014-12-16 11:21:23 +02002185void memory_region_set_size(MemoryRegion *mr, uint64_t size)
2186{
2187 Int128 s = int128_make64(size);
2188
2189 if (size == UINT64_MAX) {
2190 s = int128_2_64();
2191 }
2192 if (int128_eq(s, mr->size)) {
2193 return;
2194 }
2195 memory_region_transaction_begin();
2196 mr->size = s;
2197 memory_region_update_pending = true;
2198 memory_region_transaction_commit();
2199}
2200
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002201static void memory_region_readd_subregion(MemoryRegion *mr)
Avi Kivity2282e1a2011-09-14 12:10:12 +03002202{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002203 MemoryRegion *container = mr->container;
Avi Kivity2282e1a2011-09-14 12:10:12 +03002204
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002205 if (container) {
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002206 memory_region_transaction_begin();
2207 memory_region_ref(mr);
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002208 memory_region_del_subregion(container, mr);
2209 mr->container = container;
2210 memory_region_update_container_subregions(mr);
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002211 memory_region_unref(mr);
2212 memory_region_transaction_commit();
Avi Kivity2282e1a2011-09-14 12:10:12 +03002213 }
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002214}
Avi Kivity2282e1a2011-09-14 12:10:12 +03002215
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002216void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
2217{
2218 if (addr != mr->addr) {
2219 mr->addr = addr;
2220 memory_region_readd_subregion(mr);
2221 }
Avi Kivity2282e1a2011-09-14 12:10:12 +03002222}
2223
Avi Kivitya8170e52012-10-23 12:30:10 +02002224void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
Avi Kivity47033592011-12-04 19:16:50 +02002225{
Avi Kivity47033592011-12-04 19:16:50 +02002226 assert(mr->alias);
Avi Kivity47033592011-12-04 19:16:50 +02002227
Jan Kiszka59023ef2012-08-23 13:02:30 +02002228 if (offset == mr->alias_offset) {
Avi Kivity47033592011-12-04 19:16:50 +02002229 return;
2230 }
2231
Jan Kiszka59023ef2012-08-23 13:02:30 +02002232 memory_region_transaction_begin();
2233 mr->alias_offset = offset;
Jan Kiszka22bde712012-11-05 16:45:56 +01002234 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002235 memory_region_transaction_commit();
Avi Kivity47033592011-12-04 19:16:50 +02002236}
2237
Igor Mammedova2b257d2014-10-31 16:38:37 +00002238uint64_t memory_region_get_alignment(const MemoryRegion *mr)
2239{
2240 return mr->align;
2241}
2242
Avi Kivitye2177952011-12-08 15:00:18 +02002243static int cmp_flatrange_addr(const void *addr_, const void *fr_)
2244{
2245 const AddrRange *addr = addr_;
2246 const FlatRange *fr = fr_;
2247
2248 if (int128_le(addrrange_end(*addr), fr->addr.start)) {
2249 return -1;
2250 } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
2251 return 1;
2252 }
2253 return 0;
2254}
2255
Paolo Bonzini99e86342013-05-06 10:26:13 +02002256static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
Avi Kivitye2177952011-12-08 15:00:18 +02002257{
Paolo Bonzini99e86342013-05-06 10:26:13 +02002258 return bsearch(&addr, view->ranges, view->nr,
Avi Kivitye2177952011-12-08 15:00:18 +02002259 sizeof(FlatRange), cmp_flatrange_addr);
2260}
2261
Igor Mammedoveed2bac2014-06-02 15:25:06 +02002262bool memory_region_is_mapped(MemoryRegion *mr)
2263{
2264 return mr->container ? true : false;
2265}
2266
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002267/* Same as memory_region_find, but it does not add a reference to the
2268 * returned region. It must be called from an RCU critical section.
2269 */
2270static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr,
2271 hwaddr addr, uint64_t size)
Avi Kivitye2177952011-12-08 15:00:18 +02002272{
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002273 MemoryRegionSection ret = { .mr = NULL };
Paolo Bonzini73034e92013-05-07 15:48:28 +02002274 MemoryRegion *root;
2275 AddressSpace *as;
2276 AddrRange range;
Paolo Bonzini99e86342013-05-06 10:26:13 +02002277 FlatView *view;
Paolo Bonzini73034e92013-05-07 15:48:28 +02002278 FlatRange *fr;
Avi Kivitye2177952011-12-08 15:00:18 +02002279
Paolo Bonzini73034e92013-05-07 15:48:28 +02002280 addr += mr->addr;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002281 for (root = mr; root->container; ) {
2282 root = root->container;
Paolo Bonzini73034e92013-05-07 15:48:28 +02002283 addr += root->addr;
2284 }
2285
2286 as = memory_region_to_address_space(root);
Igor Mammedoveed2bac2014-06-02 15:25:06 +02002287 if (!as) {
2288 return ret;
2289 }
Paolo Bonzini73034e92013-05-07 15:48:28 +02002290 range = addrrange_make(int128_make64(addr), int128_make64(size));
Paolo Bonzini99e86342013-05-06 10:26:13 +02002291
Paolo Bonzini2b647662013-05-17 12:40:44 +02002292 view = atomic_rcu_read(&as->current_map);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002293 fr = flatview_lookup(view, range);
Avi Kivitye2177952011-12-08 15:00:18 +02002294 if (!fr) {
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002295 return ret;
Avi Kivitye2177952011-12-08 15:00:18 +02002296 }
2297
Paolo Bonzini99e86342013-05-06 10:26:13 +02002298 while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
Avi Kivitye2177952011-12-08 15:00:18 +02002299 --fr;
2300 }
2301
2302 ret.mr = fr->mr;
Paolo Bonzini73034e92013-05-07 15:48:28 +02002303 ret.address_space = as;
Avi Kivitye2177952011-12-08 15:00:18 +02002304 range = addrrange_intersection(range, fr->addr);
2305 ret.offset_within_region = fr->offset_in_region;
2306 ret.offset_within_region += int128_get64(int128_sub(range.start,
2307 fr->addr.start));
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002308 ret.size = range.size;
Avi Kivitye2177952011-12-08 15:00:18 +02002309 ret.offset_within_address_space = int128_get64(range.start);
Avi Kivity7a8499e2012-02-08 17:01:23 +02002310 ret.readonly = fr->readonly;
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002311 return ret;
2312}
2313
2314MemoryRegionSection memory_region_find(MemoryRegion *mr,
2315 hwaddr addr, uint64_t size)
2316{
2317 MemoryRegionSection ret;
2318 rcu_read_lock();
2319 ret = memory_region_find_rcu(mr, addr, size);
2320 if (ret.mr) {
2321 memory_region_ref(ret.mr);
2322 }
Paolo Bonzini2b647662013-05-17 12:40:44 +02002323 rcu_read_unlock();
Avi Kivitye2177952011-12-08 15:00:18 +02002324 return ret;
2325}
2326
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002327bool memory_region_present(MemoryRegion *container, hwaddr addr)
2328{
2329 MemoryRegion *mr;
2330
2331 rcu_read_lock();
2332 mr = memory_region_find_rcu(container, addr, 1).mr;
2333 rcu_read_unlock();
2334 return mr && mr != container;
2335}
2336
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +02002337void memory_global_dirty_log_sync(void)
Avi Kivity86e775c2011-12-15 16:24:49 +02002338{
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +02002339 MemoryListener *listener;
2340 AddressSpace *as;
Paolo Bonzini99e86342013-05-06 10:26:13 +02002341 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02002342 FlatRange *fr;
2343
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +02002344 QTAILQ_FOREACH(listener, &memory_listeners, link) {
2345 if (!listener->log_sync) {
2346 continue;
2347 }
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002348 as = listener->address_space;
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +02002349 view = address_space_get_flatview(as);
2350 FOR_EACH_FLAT_RANGE(fr, view) {
Paolo Bonziniadaad612016-09-22 16:09:08 +02002351 if (fr->dirty_log_mask) {
2352 MemoryRegionSection mrs = section_from_flat_range(fr, as);
2353 listener->log_sync(listener, &mrs);
2354 }
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +02002355 }
2356 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02002357 }
2358}
2359
Jay Zhou19310762017-07-28 18:28:53 +08002360static VMChangeStateEntry *vmstate_change;
2361
Avi Kivity7664e802011-12-11 14:47:25 +02002362void memory_global_dirty_log_start(void)
2363{
Jay Zhou19310762017-07-28 18:28:53 +08002364 if (vmstate_change) {
2365 qemu_del_vm_change_state_handler(vmstate_change);
2366 vmstate_change = NULL;
2367 }
2368
Avi Kivity7664e802011-12-11 14:47:25 +02002369 global_dirty_log = true;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01002370
Avi Kivity7376e582012-02-08 21:05:17 +02002371 MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01002372
2373 /* Refresh DIRTY_LOG_MIGRATION bit. */
2374 memory_region_transaction_begin();
2375 memory_region_update_pending = true;
2376 memory_region_transaction_commit();
Avi Kivity7664e802011-12-11 14:47:25 +02002377}
2378
Jay Zhou19310762017-07-28 18:28:53 +08002379static void memory_global_dirty_log_do_stop(void)
Avi Kivity7664e802011-12-11 14:47:25 +02002380{
Avi Kivity7664e802011-12-11 14:47:25 +02002381 global_dirty_log = false;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01002382
2383 /* Refresh DIRTY_LOG_MIGRATION bit. */
2384 memory_region_transaction_begin();
2385 memory_region_update_pending = true;
2386 memory_region_transaction_commit();
2387
Avi Kivity7376e582012-02-08 21:05:17 +02002388 MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
Avi Kivity7664e802011-12-11 14:47:25 +02002389}
2390
Jay Zhou19310762017-07-28 18:28:53 +08002391static void memory_vm_change_state_handler(void *opaque, int running,
2392 RunState state)
2393{
2394 if (running) {
2395 memory_global_dirty_log_do_stop();
2396
2397 if (vmstate_change) {
2398 qemu_del_vm_change_state_handler(vmstate_change);
2399 vmstate_change = NULL;
2400 }
2401 }
2402}
2403
2404void memory_global_dirty_log_stop(void)
2405{
2406 if (!runstate_is_running()) {
2407 if (vmstate_change) {
2408 return;
2409 }
2410 vmstate_change = qemu_add_vm_change_state_handler(
2411 memory_vm_change_state_handler, NULL);
2412 return;
2413 }
2414
2415 memory_global_dirty_log_do_stop();
2416}
2417
Avi Kivity7664e802011-12-11 14:47:25 +02002418static void listener_add_address_space(MemoryListener *listener,
2419 AddressSpace *as)
2420{
Paolo Bonzini99e86342013-05-06 10:26:13 +02002421 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02002422 FlatRange *fr;
2423
Paolo Bonzini680a4782015-11-02 09:23:52 +01002424 if (listener->begin) {
2425 listener->begin(listener);
2426 }
Avi Kivity7664e802011-12-11 14:47:25 +02002427 if (global_dirty_log) {
Avi Kivity975aefe2012-10-02 16:39:57 +02002428 if (listener->log_global_start) {
2429 listener->log_global_start(listener);
2430 }
Avi Kivity7664e802011-12-11 14:47:25 +02002431 }
Avi Kivity975aefe2012-10-02 16:39:57 +02002432
Paolo Bonzini856d7242013-05-06 11:57:21 +02002433 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002434 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity7664e802011-12-11 14:47:25 +02002435 MemoryRegionSection section = {
2436 .mr = fr->mr,
Avi Kivityf6790af2012-10-02 20:13:51 +02002437 .address_space = as,
Avi Kivity7664e802011-12-11 14:47:25 +02002438 .offset_within_region = fr->offset_in_region,
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002439 .size = fr->addr.size,
Avi Kivity7664e802011-12-11 14:47:25 +02002440 .offset_within_address_space = int128_get64(fr->addr.start),
Avi Kivity7a8499e2012-02-08 17:01:23 +02002441 .readonly = fr->readonly,
Avi Kivity7664e802011-12-11 14:47:25 +02002442 };
Paolo Bonzini680a4782015-11-02 09:23:52 +01002443 if (fr->dirty_log_mask && listener->log_start) {
2444 listener->log_start(listener, &section, 0, fr->dirty_log_mask);
2445 }
Avi Kivity975aefe2012-10-02 16:39:57 +02002446 if (listener->region_add) {
2447 listener->region_add(listener, &section);
2448 }
Avi Kivity7664e802011-12-11 14:47:25 +02002449 }
Paolo Bonzini680a4782015-11-02 09:23:52 +01002450 if (listener->commit) {
2451 listener->commit(listener);
2452 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02002453 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02002454}
2455
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002456void memory_listener_register(MemoryListener *listener, AddressSpace *as)
Avi Kivity7664e802011-12-11 14:47:25 +02002457{
Avi Kivity72e22d22012-02-08 15:05:50 +02002458 MemoryListener *other = NULL;
2459
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002460 listener->address_space = as;
Avi Kivity72e22d22012-02-08 15:05:50 +02002461 if (QTAILQ_EMPTY(&memory_listeners)
2462 || listener->priority >= QTAILQ_LAST(&memory_listeners,
2463 memory_listeners)->priority) {
2464 QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
2465 } else {
2466 QTAILQ_FOREACH(other, &memory_listeners, link) {
2467 if (listener->priority < other->priority) {
2468 break;
2469 }
2470 }
2471 QTAILQ_INSERT_BEFORE(other, listener, link);
2472 }
Avi Kivity0d673e32012-10-02 15:28:50 +02002473
Paolo Bonzini9a546352016-09-22 16:23:06 +02002474 if (QTAILQ_EMPTY(&as->listeners)
2475 || listener->priority >= QTAILQ_LAST(&as->listeners,
2476 memory_listeners)->priority) {
2477 QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as);
2478 } else {
2479 QTAILQ_FOREACH(other, &as->listeners, link_as) {
2480 if (listener->priority < other->priority) {
2481 break;
2482 }
2483 }
2484 QTAILQ_INSERT_BEFORE(other, listener, link_as);
2485 }
2486
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002487 listener_add_address_space(listener, as);
Avi Kivity7664e802011-12-11 14:47:25 +02002488}
2489
2490void memory_listener_unregister(MemoryListener *listener)
2491{
Paolo Bonzini1d8280c2017-01-27 16:40:12 +01002492 if (!listener->address_space) {
2493 return;
2494 }
2495
Avi Kivity72e22d22012-02-08 15:05:50 +02002496 QTAILQ_REMOVE(&memory_listeners, listener, link);
Paolo Bonzini9a546352016-09-22 16:23:06 +02002497 QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as);
Paolo Bonzini1d8280c2017-01-27 16:40:12 +01002498 listener->address_space = NULL;
Avi Kivity86e775c2011-12-15 16:24:49 +02002499}
Avi Kivitye2177952011-12-08 15:00:18 +02002500
KONRAD Fredericc9356742016-10-19 15:06:49 +02002501bool memory_region_request_mmio_ptr(MemoryRegion *mr, hwaddr addr)
2502{
2503 void *host;
2504 unsigned size = 0;
2505 unsigned offset = 0;
2506 Object *new_interface;
2507
2508 if (!mr || !mr->ops->request_ptr) {
2509 return false;
2510 }
2511
2512 /*
2513 * Avoid an update if the request_ptr call
2514 * memory_region_invalidate_mmio_ptr which seems to be likely when we use
2515 * a cache.
2516 */
2517 memory_region_transaction_begin();
2518
2519 host = mr->ops->request_ptr(mr->opaque, addr - mr->addr, &size, &offset);
2520
2521 if (!host || !size) {
2522 memory_region_transaction_commit();
2523 return false;
2524 }
2525
2526 new_interface = object_new("mmio_interface");
2527 qdev_prop_set_uint64(DEVICE(new_interface), "start", offset);
2528 qdev_prop_set_uint64(DEVICE(new_interface), "end", offset + size - 1);
2529 qdev_prop_set_bit(DEVICE(new_interface), "ro", true);
2530 qdev_prop_set_ptr(DEVICE(new_interface), "host_ptr", host);
2531 qdev_prop_set_ptr(DEVICE(new_interface), "subregion", mr);
2532 object_property_set_bool(OBJECT(new_interface), true, "realized", NULL);
2533
2534 memory_region_transaction_commit();
2535 return true;
2536}
2537
2538typedef struct MMIOPtrInvalidate {
2539 MemoryRegion *mr;
2540 hwaddr offset;
2541 unsigned size;
2542 int busy;
2543 int allocated;
2544} MMIOPtrInvalidate;
2545
2546#define MAX_MMIO_INVALIDATE 10
2547static MMIOPtrInvalidate mmio_ptr_invalidate_list[MAX_MMIO_INVALIDATE];
2548
2549static void memory_region_do_invalidate_mmio_ptr(CPUState *cpu,
2550 run_on_cpu_data data)
2551{
2552 MMIOPtrInvalidate *invalidate_data = (MMIOPtrInvalidate *)data.host_ptr;
2553 MemoryRegion *mr = invalidate_data->mr;
2554 hwaddr offset = invalidate_data->offset;
2555 unsigned size = invalidate_data->size;
2556 MemoryRegionSection section = memory_region_find(mr, offset, size);
2557
2558 qemu_mutex_lock_iothread();
2559
2560 /* Reset dirty so this doesn't happen later. */
2561 cpu_physical_memory_test_and_clear_dirty(offset, size, 1);
2562
2563 if (section.mr != mr) {
2564 /* memory_region_find add a ref on section.mr */
2565 memory_region_unref(section.mr);
2566 if (MMIO_INTERFACE(section.mr->owner)) {
2567 /* We found the interface just drop it. */
2568 object_property_set_bool(section.mr->owner, false, "realized",
2569 NULL);
2570 object_unref(section.mr->owner);
2571 object_unparent(section.mr->owner);
2572 }
2573 }
2574
2575 qemu_mutex_unlock_iothread();
2576
2577 if (invalidate_data->allocated) {
2578 g_free(invalidate_data);
2579 } else {
2580 invalidate_data->busy = 0;
2581 }
2582}
2583
2584void memory_region_invalidate_mmio_ptr(MemoryRegion *mr, hwaddr offset,
2585 unsigned size)
2586{
2587 size_t i;
2588 MMIOPtrInvalidate *invalidate_data = NULL;
2589
2590 for (i = 0; i < MAX_MMIO_INVALIDATE; i++) {
2591 if (atomic_cmpxchg(&(mmio_ptr_invalidate_list[i].busy), 0, 1) == 0) {
2592 invalidate_data = &mmio_ptr_invalidate_list[i];
2593 break;
2594 }
2595 }
2596
2597 if (!invalidate_data) {
2598 invalidate_data = g_malloc0(sizeof(MMIOPtrInvalidate));
2599 invalidate_data->allocated = 1;
2600 }
2601
2602 invalidate_data->mr = mr;
2603 invalidate_data->offset = offset;
2604 invalidate_data->size = size;
2605
2606 async_safe_run_on_cpu(first_cpu, memory_region_do_invalidate_mmio_ptr,
2607 RUN_ON_CPU_HOST_PTR(invalidate_data));
2608}
2609
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002610void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002611{
Paolo Bonziniac951902015-02-11 15:21:04 +01002612 memory_region_ref(root);
Jan Kiszka59023ef2012-08-23 13:02:30 +02002613 memory_region_transaction_begin();
Peter Crosthwaitef0c02d12016-01-21 14:15:06 +00002614 as->ref_count = 1;
Avi Kivity8786db72012-10-02 13:53:41 +02002615 as->root = root;
Peter Crosthwaitef0c02d12016-01-21 14:15:06 +00002616 as->malloced = false;
Avi Kivity8786db72012-10-02 13:53:41 +02002617 as->current_map = g_new(FlatView, 1);
2618 flatview_init(as->current_map);
Avi Kivity4c19eb72012-10-30 13:47:44 +02002619 as->ioeventfd_nb = 0;
2620 as->ioeventfds = NULL;
Paolo Bonzini9a546352016-09-22 16:23:06 +02002621 QTAILQ_INIT(&as->listeners);
Avi Kivity0d673e32012-10-02 15:28:50 +02002622 QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002623 as->name = g_strdup(name ? name : "anonymous");
Avi Kivityac1970f2012-10-03 16:22:53 +02002624 address_space_init_dispatch(as);
Paolo Bonzinif43793c2013-04-16 15:39:51 +02002625 memory_region_update_pending |= root->enabled;
2626 memory_region_transaction_commit();
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002627}
Avi Kivity658b2222011-07-26 14:26:08 +03002628
Paolo Bonzini374f2982013-05-17 12:37:03 +02002629static void do_address_space_destroy(AddressSpace *as)
Avi Kivity83f3c252012-10-07 12:59:55 +02002630{
Peter Crosthwaitef0c02d12016-01-21 14:15:06 +00002631 bool do_free = as->malloced;
David Gibson078c44f2014-05-30 12:59:00 -06002632
Avi Kivity83f3c252012-10-07 12:59:55 +02002633 address_space_destroy_dispatch(as);
Paolo Bonzini9a546352016-09-22 16:23:06 +02002634 assert(QTAILQ_EMPTY(&as->listeners));
David Gibson078c44f2014-05-30 12:59:00 -06002635
Paolo Bonzini856d7242013-05-06 11:57:21 +02002636 flatview_unref(as->current_map);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002637 g_free(as->name);
Avi Kivity4c19eb72012-10-30 13:47:44 +02002638 g_free(as->ioeventfds);
Paolo Bonziniac951902015-02-11 15:21:04 +01002639 memory_region_unref(as->root);
Peter Crosthwaitef0c02d12016-01-21 14:15:06 +00002640 if (do_free) {
2641 g_free(as);
2642 }
2643}
2644
2645AddressSpace *address_space_init_shareable(MemoryRegion *root, const char *name)
2646{
2647 AddressSpace *as;
2648
2649 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
2650 if (root == as->root && as->malloced) {
2651 as->ref_count++;
2652 return as;
2653 }
2654 }
2655
2656 as = g_malloc0(sizeof *as);
2657 address_space_init(as, root, name);
2658 as->malloced = true;
2659 return as;
Avi Kivity83f3c252012-10-07 12:59:55 +02002660}
2661
Paolo Bonzini374f2982013-05-17 12:37:03 +02002662void address_space_destroy(AddressSpace *as)
2663{
Paolo Bonziniac951902015-02-11 15:21:04 +01002664 MemoryRegion *root = as->root;
2665
Peter Crosthwaitef0c02d12016-01-21 14:15:06 +00002666 as->ref_count--;
2667 if (as->ref_count) {
2668 return;
2669 }
Paolo Bonzini374f2982013-05-17 12:37:03 +02002670 /* Flush out anything from MemoryListeners listening in on this */
2671 memory_region_transaction_begin();
2672 as->root = NULL;
2673 memory_region_transaction_commit();
2674 QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
Paolo Bonzini6e48e8f2015-02-10 10:25:44 -07002675 address_space_unregister(as);
Paolo Bonzini374f2982013-05-17 12:37:03 +02002676
2677 /* At this point, as->dispatch and as->current_map are dummy
2678 * entries that the guest should never use. Wait for the old
2679 * values to expire before freeing the data.
2680 */
Paolo Bonziniac951902015-02-11 15:21:04 +01002681 as->root = root;
Paolo Bonzini374f2982013-05-17 12:37:03 +02002682 call_rcu(as, do_address_space_destroy, rcu);
2683}
2684
Peter Xu4e831902017-01-16 16:40:04 +08002685static const char *memory_region_type(MemoryRegion *mr)
2686{
2687 if (memory_region_is_ram_device(mr)) {
2688 return "ramd";
2689 } else if (memory_region_is_romd(mr)) {
2690 return "romd";
2691 } else if (memory_region_is_rom(mr)) {
2692 return "rom";
2693 } else if (memory_region_is_ram(mr)) {
2694 return "ram";
2695 } else {
2696 return "i/o";
2697 }
2698}
2699
Blue Swirl314e2982011-09-11 20:22:05 +00002700typedef struct MemoryRegionList MemoryRegionList;
2701
2702struct MemoryRegionList {
2703 const MemoryRegion *mr;
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002704 QTAILQ_ENTRY(MemoryRegionList) mrqueue;
Blue Swirl314e2982011-09-11 20:22:05 +00002705};
2706
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002707typedef QTAILQ_HEAD(mrqueue, MemoryRegionList) MemoryRegionListHead;
Blue Swirl314e2982011-09-11 20:22:05 +00002708
Peter Xu4e831902017-01-16 16:40:04 +08002709#define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \
2710 int128_sub((size), int128_one())) : 0)
2711#define MTREE_INDENT " "
2712
Blue Swirl314e2982011-09-11 20:22:05 +00002713static void mtree_print_mr(fprintf_function mon_printf, void *f,
2714 const MemoryRegion *mr, unsigned int level,
Avi Kivitya8170e52012-10-23 12:30:10 +02002715 hwaddr base,
Jan Kiszka9479c572011-09-27 15:00:41 +02002716 MemoryRegionListHead *alias_print_queue)
Blue Swirl314e2982011-09-11 20:22:05 +00002717{
Jan Kiszka9479c572011-09-27 15:00:41 +02002718 MemoryRegionList *new_ml, *ml, *next_ml;
2719 MemoryRegionListHead submr_print_queue;
Blue Swirl314e2982011-09-11 20:22:05 +00002720 const MemoryRegion *submr;
2721 unsigned int i;
Peter Xub31f8412017-03-14 20:56:27 +08002722 hwaddr cur_start, cur_end;
Blue Swirl314e2982011-09-11 20:22:05 +00002723
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002724 if (!mr) {
Blue Swirl314e2982011-09-11 20:22:05 +00002725 return;
2726 }
2727
2728 for (i = 0; i < level; i++) {
Peter Xu4e831902017-01-16 16:40:04 +08002729 mon_printf(f, MTREE_INDENT);
Blue Swirl314e2982011-09-11 20:22:05 +00002730 }
2731
Peter Xub31f8412017-03-14 20:56:27 +08002732 cur_start = base + mr->addr;
2733 cur_end = cur_start + MR_SIZE(mr->size);
2734
2735 /*
2736 * Try to detect overflow of memory region. This should never
2737 * happen normally. When it happens, we dump something to warn the
2738 * user who is observing this.
2739 */
2740 if (cur_start < base || cur_end < cur_start) {
2741 mon_printf(f, "[DETECTED OVERFLOW!] ");
2742 }
2743
Blue Swirl314e2982011-09-11 20:22:05 +00002744 if (mr->alias) {
2745 MemoryRegionList *ml;
2746 bool found = false;
2747
2748 /* check if the alias is already in the queue */
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002749 QTAILQ_FOREACH(ml, alias_print_queue, mrqueue) {
Paolo Bonzinif54bb152013-12-11 12:51:46 +01002750 if (ml->mr == mr->alias) {
Blue Swirl314e2982011-09-11 20:22:05 +00002751 found = true;
2752 }
2753 }
2754
2755 if (!found) {
2756 ml = g_new(MemoryRegionList, 1);
2757 ml->mr = mr->alias;
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002758 QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue);
Blue Swirl314e2982011-09-11 20:22:05 +00002759 }
Jan Kiszka4896d742012-02-04 16:25:42 +01002760 mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
Peter Xu4e831902017-01-16 16:40:04 +08002761 " (prio %d, %s): alias %s @%s " TARGET_FMT_plx
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002762 "-" TARGET_FMT_plx "%s\n",
Peter Xub31f8412017-03-14 20:56:27 +08002763 cur_start, cur_end,
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002764 mr->priority,
Peter Xu4e831902017-01-16 16:40:04 +08002765 memory_region_type((MemoryRegion *)mr),
Peter Crosthwaite3fb18b42014-08-14 23:55:36 -07002766 memory_region_name(mr),
2767 memory_region_name(mr->alias),
Blue Swirl314e2982011-09-11 20:22:05 +00002768 mr->alias_offset,
Peter Xu4e831902017-01-16 16:40:04 +08002769 mr->alias_offset + MR_SIZE(mr->size),
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002770 mr->enabled ? "" : " [disabled]");
Blue Swirl314e2982011-09-11 20:22:05 +00002771 } else {
Jan Kiszka4896d742012-02-04 16:25:42 +01002772 mon_printf(f,
Peter Xu4e831902017-01-16 16:40:04 +08002773 TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %s): %s%s\n",
Peter Xub31f8412017-03-14 20:56:27 +08002774 cur_start, cur_end,
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002775 mr->priority,
Peter Xu4e831902017-01-16 16:40:04 +08002776 memory_region_type((MemoryRegion *)mr),
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002777 memory_region_name(mr),
2778 mr->enabled ? "" : " [disabled]");
Blue Swirl314e2982011-09-11 20:22:05 +00002779 }
Jan Kiszka9479c572011-09-27 15:00:41 +02002780
2781 QTAILQ_INIT(&submr_print_queue);
2782
Blue Swirl314e2982011-09-11 20:22:05 +00002783 QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002784 new_ml = g_new(MemoryRegionList, 1);
2785 new_ml->mr = submr;
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002786 QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002787 if (new_ml->mr->addr < ml->mr->addr ||
2788 (new_ml->mr->addr == ml->mr->addr &&
2789 new_ml->mr->priority > ml->mr->priority)) {
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002790 QTAILQ_INSERT_BEFORE(ml, new_ml, mrqueue);
Jan Kiszka9479c572011-09-27 15:00:41 +02002791 new_ml = NULL;
2792 break;
2793 }
2794 }
2795 if (new_ml) {
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002796 QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, mrqueue);
Jan Kiszka9479c572011-09-27 15:00:41 +02002797 }
2798 }
2799
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002800 QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
Peter Xub31f8412017-03-14 20:56:27 +08002801 mtree_print_mr(mon_printf, f, ml->mr, level + 1, cur_start,
Jan Kiszka9479c572011-09-27 15:00:41 +02002802 alias_print_queue);
2803 }
2804
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002805 QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, mrqueue, next_ml) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002806 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002807 }
2808}
2809
Peter Xu57bb40c2017-01-16 16:40:05 +08002810static void mtree_print_flatview(fprintf_function p, void *f,
2811 AddressSpace *as)
2812{
2813 FlatView *view = address_space_get_flatview(as);
2814 FlatRange *range = &view->ranges[0];
2815 MemoryRegion *mr;
2816 int n = view->nr;
2817
2818 if (n <= 0) {
2819 p(f, MTREE_INDENT "No rendered FlatView for "
2820 "address space '%s'\n", as->name);
2821 flatview_unref(view);
2822 return;
2823 }
2824
2825 while (n--) {
2826 mr = range->mr;
Paolo Bonzini377a07a2017-03-02 22:49:41 +01002827 if (range->offset_in_region) {
2828 p(f, MTREE_INDENT TARGET_FMT_plx "-"
2829 TARGET_FMT_plx " (prio %d, %s): %s @" TARGET_FMT_plx "\n",
2830 int128_get64(range->addr.start),
2831 int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
2832 mr->priority,
2833 range->readonly ? "rom" : memory_region_type(mr),
2834 memory_region_name(mr),
2835 range->offset_in_region);
2836 } else {
2837 p(f, MTREE_INDENT TARGET_FMT_plx "-"
2838 TARGET_FMT_plx " (prio %d, %s): %s\n",
2839 int128_get64(range->addr.start),
2840 int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
2841 mr->priority,
2842 range->readonly ? "rom" : memory_region_type(mr),
2843 memory_region_name(mr));
2844 }
Peter Xu57bb40c2017-01-16 16:40:05 +08002845 range++;
2846 }
2847
2848 flatview_unref(view);
2849}
2850
2851void mtree_info(fprintf_function mon_printf, void *f, bool flatview)
Blue Swirl314e2982011-09-11 20:22:05 +00002852{
2853 MemoryRegionListHead ml_head;
2854 MemoryRegionList *ml, *ml2;
Avi Kivity0d673e32012-10-02 15:28:50 +02002855 AddressSpace *as;
Blue Swirl314e2982011-09-11 20:22:05 +00002856
Peter Xu57bb40c2017-01-16 16:40:05 +08002857 if (flatview) {
2858 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
2859 mon_printf(f, "address-space (flat view): %s\n", as->name);
2860 mtree_print_flatview(mon_printf, f, as);
2861 mon_printf(f, "\n");
2862 }
2863 return;
2864 }
2865
Blue Swirl314e2982011-09-11 20:22:05 +00002866 QTAILQ_INIT(&ml_head);
2867
Avi Kivity0d673e32012-10-02 15:28:50 +02002868 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Gerd Hoffmanne48816a2015-04-08 12:53:47 +02002869 mon_printf(f, "address-space: %s\n", as->name);
2870 mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head);
2871 mon_printf(f, "\n");
Blue Swirlb9f9be82012-03-10 16:58:35 +00002872 }
2873
Blue Swirl314e2982011-09-11 20:22:05 +00002874 /* print aliased regions */
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002875 QTAILQ_FOREACH(ml, &ml_head, mrqueue) {
Gerd Hoffmanne48816a2015-04-08 12:53:47 +02002876 mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr));
2877 mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head);
2878 mon_printf(f, "\n");
Blue Swirl314e2982011-09-11 20:22:05 +00002879 }
2880
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002881 QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) {
Avi Kivity88365e42011-11-13 12:00:55 +02002882 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002883 }
Blue Swirl314e2982011-09-11 20:22:05 +00002884}
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07002885
Peter Maydellb08199c2017-07-07 15:42:51 +01002886void memory_region_init_ram(MemoryRegion *mr,
2887 struct Object *owner,
2888 const char *name,
2889 uint64_t size,
2890 Error **errp)
2891{
2892 DeviceState *owner_dev;
2893 Error *err = NULL;
2894
2895 memory_region_init_ram_nomigrate(mr, owner, name, size, &err);
2896 if (err) {
2897 error_propagate(errp, err);
2898 return;
2899 }
2900 /* This will assert if owner is neither NULL nor a DeviceState.
2901 * We only want the owner here for the purposes of defining a
2902 * unique name for migration. TODO: Ideally we should implement
2903 * a naming scheme for Objects which are not DeviceStates, in
2904 * which case we can relax this restriction.
2905 */
2906 owner_dev = DEVICE(owner);
2907 vmstate_register_ram(mr, owner_dev);
2908}
2909
2910void memory_region_init_rom(MemoryRegion *mr,
2911 struct Object *owner,
2912 const char *name,
2913 uint64_t size,
2914 Error **errp)
2915{
2916 DeviceState *owner_dev;
2917 Error *err = NULL;
2918
2919 memory_region_init_rom_nomigrate(mr, owner, name, size, &err);
2920 if (err) {
2921 error_propagate(errp, err);
2922 return;
2923 }
2924 /* This will assert if owner is neither NULL nor a DeviceState.
2925 * We only want the owner here for the purposes of defining a
2926 * unique name for migration. TODO: Ideally we should implement
2927 * a naming scheme for Objects which are not DeviceStates, in
2928 * which case we can relax this restriction.
2929 */
2930 owner_dev = DEVICE(owner);
2931 vmstate_register_ram(mr, owner_dev);
2932}
2933
2934void memory_region_init_rom_device(MemoryRegion *mr,
2935 struct Object *owner,
2936 const MemoryRegionOps *ops,
2937 void *opaque,
2938 const char *name,
2939 uint64_t size,
2940 Error **errp)
2941{
2942 DeviceState *owner_dev;
2943 Error *err = NULL;
2944
2945 memory_region_init_rom_device_nomigrate(mr, owner, ops, opaque,
2946 name, size, &err);
2947 if (err) {
2948 error_propagate(errp, err);
2949 return;
2950 }
2951 /* This will assert if owner is neither NULL nor a DeviceState.
2952 * We only want the owner here for the purposes of defining a
2953 * unique name for migration. TODO: Ideally we should implement
2954 * a naming scheme for Objects which are not DeviceStates, in
2955 * which case we can relax this restriction.
2956 */
2957 owner_dev = DEVICE(owner);
2958 vmstate_register_ram(mr, owner_dev);
2959}
2960
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07002961static const TypeInfo memory_region_info = {
2962 .parent = TYPE_OBJECT,
2963 .name = TYPE_MEMORY_REGION,
2964 .instance_size = sizeof(MemoryRegion),
2965 .instance_init = memory_region_initfn,
2966 .instance_finalize = memory_region_finalize,
2967};
2968
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10002969static const TypeInfo iommu_memory_region_info = {
2970 .parent = TYPE_MEMORY_REGION,
2971 .name = TYPE_IOMMU_MEMORY_REGION,
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10002972 .class_size = sizeof(IOMMUMemoryRegionClass),
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10002973 .instance_size = sizeof(IOMMUMemoryRegion),
2974 .instance_init = iommu_memory_region_initfn,
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10002975 .abstract = true,
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10002976};
2977
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07002978static void memory_register_types(void)
2979{
2980 type_register_static(&memory_region_info);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10002981 type_register_static(&iommu_memory_region_info);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07002982}
2983
2984type_init(memory_register_types)