blob: 6515131ac241f9973d99193faa540522ab5e6ae1 [file] [log] [blame]
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
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +100050static GHashTable *flat_views;
51
Avi Kivity093bc2c2011-07-26 14:26:01 +030052typedef struct AddrRange AddrRange;
53
Avi Kivity8417ceb2011-08-03 11:56:14 +030054/*
Fam Zhengc9cdaa32014-08-11 10:18:31 +080055 * Note that signed integers are needed for negative offsetting in aliases
Avi Kivity8417ceb2011-08-03 11:56:14 +030056 * (large MemoryRegion::alias_offset).
57 */
Avi Kivity093bc2c2011-07-26 14:26:01 +030058struct AddrRange {
Avi Kivity08dafab2011-10-16 13:19:17 +020059 Int128 start;
60 Int128 size;
Avi Kivity093bc2c2011-07-26 14:26:01 +030061};
62
Avi Kivity08dafab2011-10-16 13:19:17 +020063static AddrRange addrrange_make(Int128 start, Int128 size)
Avi Kivity093bc2c2011-07-26 14:26:01 +030064{
65 return (AddrRange) { start, size };
66}
67
68static bool addrrange_equal(AddrRange r1, AddrRange r2)
69{
Avi Kivity08dafab2011-10-16 13:19:17 +020070 return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030071}
72
Avi Kivity08dafab2011-10-16 13:19:17 +020073static Int128 addrrange_end(AddrRange r)
Avi Kivity093bc2c2011-07-26 14:26:01 +030074{
Avi Kivity08dafab2011-10-16 13:19:17 +020075 return int128_add(r.start, r.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030076}
77
Avi Kivity08dafab2011-10-16 13:19:17 +020078static AddrRange addrrange_shift(AddrRange range, Int128 delta)
Avi Kivity093bc2c2011-07-26 14:26:01 +030079{
Avi Kivity08dafab2011-10-16 13:19:17 +020080 int128_addto(&range.start, delta);
Avi Kivity093bc2c2011-07-26 14:26:01 +030081 return range;
82}
83
Avi Kivity08dafab2011-10-16 13:19:17 +020084static bool addrrange_contains(AddrRange range, Int128 addr)
85{
86 return int128_ge(addr, range.start)
87 && int128_lt(addr, addrrange_end(range));
88}
89
Avi Kivity093bc2c2011-07-26 14:26:01 +030090static bool addrrange_intersects(AddrRange r1, AddrRange r2)
91{
Avi Kivity08dafab2011-10-16 13:19:17 +020092 return addrrange_contains(r1, r2.start)
93 || addrrange_contains(r2, r1.start);
Avi Kivity093bc2c2011-07-26 14:26:01 +030094}
95
96static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
97{
Avi Kivity08dafab2011-10-16 13:19:17 +020098 Int128 start = int128_max(r1.start, r2.start);
99 Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
100 return addrrange_make(start, int128_sub(end, start));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300101}
102
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200103enum ListenerDirection { Forward, Reverse };
104
Avi Kivity7376e582012-02-08 21:05:17 +0200105#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200106 do { \
107 MemoryListener *_listener; \
108 \
109 switch (_direction) { \
110 case Forward: \
111 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200112 if (_listener->_callback) { \
113 _listener->_callback(_listener, ##_args); \
114 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200115 } \
116 break; \
117 case Reverse: \
118 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
119 memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200120 if (_listener->_callback) { \
121 _listener->_callback(_listener, ##_args); \
122 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200123 } \
124 break; \
125 default: \
126 abort(); \
127 } \
128 } while (0)
129
Paolo Bonzini9a546352016-09-22 16:23:06 +0200130#define MEMORY_LISTENER_CALL(_as, _callback, _direction, _section, _args...) \
Avi Kivity7376e582012-02-08 21:05:17 +0200131 do { \
132 MemoryListener *_listener; \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200133 struct memory_listeners_as *list = &(_as)->listeners; \
Avi Kivity7376e582012-02-08 21:05:17 +0200134 \
135 switch (_direction) { \
136 case Forward: \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200137 QTAILQ_FOREACH(_listener, list, link_as) { \
138 if (_listener->_callback) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200139 _listener->_callback(_listener, _section, ##_args); \
140 } \
141 } \
142 break; \
143 case Reverse: \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200144 QTAILQ_FOREACH_REVERSE(_listener, list, memory_listeners_as, \
145 link_as) { \
146 if (_listener->_callback) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200147 _listener->_callback(_listener, _section, ##_args); \
148 } \
149 } \
150 break; \
151 default: \
152 abort(); \
153 } \
154 } while (0)
155
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200156/* No need to ref/unref .mr, the FlatRange keeps it alive. */
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200157#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback, _args...) \
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200158 do { \
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000159 MemoryRegionSection mrs = section_from_flat_range(fr, \
160 address_space_to_flatview(as)); \
Paolo Bonzini9a546352016-09-22 16:23:06 +0200161 MEMORY_LISTENER_CALL(as, callback, dir, &mrs, ##_args); \
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200162 } while(0)
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200163
Avi Kivity093bc2c2011-07-26 14:26:01 +0300164struct CoalescedMemoryRange {
165 AddrRange addr;
166 QTAILQ_ENTRY(CoalescedMemoryRange) link;
167};
168
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300169struct MemoryRegionIoeventfd {
170 AddrRange addr;
171 bool match_data;
172 uint64_t data;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200173 EventNotifier *e;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300174};
175
176static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
177 MemoryRegionIoeventfd b)
178{
Avi Kivity08dafab2011-10-16 13:19:17 +0200179 if (int128_lt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300180 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200181 } else if (int128_gt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300182 return false;
Avi Kivity08dafab2011-10-16 13:19:17 +0200183 } else if (int128_lt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300184 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200185 } else if (int128_gt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300186 return false;
187 } else if (a.match_data < b.match_data) {
188 return true;
189 } else if (a.match_data > b.match_data) {
190 return false;
191 } else if (a.match_data) {
192 if (a.data < b.data) {
193 return true;
194 } else if (a.data > b.data) {
195 return false;
196 }
197 }
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200198 if (a.e < b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300199 return true;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200200 } else if (a.e > b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300201 return false;
202 }
203 return false;
204}
205
206static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a,
207 MemoryRegionIoeventfd b)
208{
209 return !memory_region_ioeventfd_before(a, b)
210 && !memory_region_ioeventfd_before(b, a);
211}
212
Avi Kivity093bc2c2011-07-26 14:26:01 +0300213typedef struct FlatRange FlatRange;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300214
215/* Range of memory in the global map. Addresses are absolute. */
216struct FlatRange {
217 MemoryRegion *mr;
Avi Kivitya8170e52012-10-23 12:30:10 +0200218 hwaddr offset_in_region;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300219 AddrRange addr;
Avi Kivity5a583342011-07-26 14:26:02 +0300220 uint8_t dirty_log_mask;
Paolo Bonzinib138e652016-05-24 21:26:28 +0200221 bool romd_mode;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300222 bool readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300223};
224
225/* Flattened global view of current active memory hierarchy. Kept in sorted
226 * order.
227 */
228struct FlatView {
Paolo Bonzini374f2982013-05-17 12:37:03 +0200229 struct rcu_head rcu;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200230 unsigned ref;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300231 FlatRange *ranges;
232 unsigned nr;
233 unsigned nr_allocated;
Alexey Kardashevskiy66a6df12017-09-21 18:50:56 +1000234 struct AddressSpaceDispatch *dispatch;
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000235 MemoryRegion *root;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300236};
237
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300238typedef struct AddressSpaceOps AddressSpaceOps;
239
Avi Kivity093bc2c2011-07-26 14:26:01 +0300240#define FOR_EACH_FLAT_RANGE(var, view) \
241 for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
242
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200243static inline MemoryRegionSection
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000244section_from_flat_range(FlatRange *fr, FlatView *fv)
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200245{
246 return (MemoryRegionSection) {
247 .mr = fr->mr,
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000248 .fv = fv,
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +0200249 .offset_within_region = fr->offset_in_region,
250 .size = fr->addr.size,
251 .offset_within_address_space = int128_get64(fr->addr.start),
252 .readonly = fr->readonly,
253 };
254}
255
Avi Kivity093bc2c2011-07-26 14:26:01 +0300256static bool flatrange_equal(FlatRange *a, FlatRange *b)
257{
258 return a->mr == b->mr
259 && addrrange_equal(a->addr, b->addr)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300260 && a->offset_in_region == b->offset_in_region
Paolo Bonzinib138e652016-05-24 21:26:28 +0200261 && a->romd_mode == b->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300262 && a->readonly == b->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300263}
264
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000265static FlatView *flatview_new(MemoryRegion *mr_root)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300266{
Alexey Kardashevskiycc94cd62017-09-21 18:50:55 +1000267 FlatView *view;
268
269 view = g_new0(FlatView, 1);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200270 view->ref = 1;
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000271 view->root = mr_root;
272 memory_region_ref(mr_root);
Paolo Bonzini02d96512017-09-21 12:34:00 +0200273 trace_flatview_new(view, mr_root);
Alexey Kardashevskiycc94cd62017-09-21 18:50:55 +1000274
275 return view;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300276}
277
278/* Insert a range into a given position. Caller is responsible for maintaining
279 * sorting order.
280 */
281static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
282{
283 if (view->nr == view->nr_allocated) {
284 view->nr_allocated = MAX(2 * view->nr, 10);
Anthony Liguori7267c092011-08-20 22:09:37 -0500285 view->ranges = g_realloc(view->ranges,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300286 view->nr_allocated * sizeof(*view->ranges));
287 }
288 memmove(view->ranges + pos + 1, view->ranges + pos,
289 (view->nr - pos) * sizeof(FlatRange));
290 view->ranges[pos] = *range;
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200291 memory_region_ref(range->mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300292 ++view->nr;
293}
294
295static void flatview_destroy(FlatView *view)
296{
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200297 int i;
298
Paolo Bonzini02d96512017-09-21 12:34:00 +0200299 trace_flatview_destroy(view, view->root);
Alexey Kardashevskiy66a6df12017-09-21 18:50:56 +1000300 if (view->dispatch) {
301 address_space_dispatch_free(view->dispatch);
302 }
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200303 for (i = 0; i < view->nr; i++) {
304 memory_region_unref(view->ranges[i].mr);
305 }
Anthony Liguori7267c092011-08-20 22:09:37 -0500306 g_free(view->ranges);
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000307 memory_region_unref(view->root);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200308 g_free(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300309}
310
Paolo Bonzini447b0d02017-09-21 14:32:47 +0200311static bool flatview_ref(FlatView *view)
Paolo Bonzini856d7242013-05-06 11:57:21 +0200312{
Paolo Bonzini447b0d02017-09-21 14:32:47 +0200313 return atomic_fetch_inc_nonzero(&view->ref) > 0;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200314}
315
316static void flatview_unref(FlatView *view)
317{
318 if (atomic_fetch_dec(&view->ref) == 1) {
Paolo Bonzini02d96512017-09-21 12:34:00 +0200319 trace_flatview_destroy_rcu(view, view->root);
Alexey Kardashevskiy092aa2f2017-09-21 18:51:07 +1000320 assert(view->root);
Alexey Kardashevskiy66a6df12017-09-21 18:50:56 +1000321 call_rcu(view, flatview_destroy, rcu);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200322 }
323}
324
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000325FlatView *address_space_to_flatview(AddressSpace *as)
Alexey Kardashevskiy66a6df12017-09-21 18:50:56 +1000326{
327 return atomic_rcu_read(&as->current_map);
328}
329
330AddressSpaceDispatch *flatview_to_dispatch(FlatView *fv)
331{
332 return fv->dispatch;
333}
334
335AddressSpaceDispatch *address_space_to_dispatch(AddressSpace *as)
336{
337 return flatview_to_dispatch(address_space_to_flatview(as));
338}
339
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300340static bool can_merge(FlatRange *r1, FlatRange *r2)
341{
Avi Kivity08dafab2011-10-16 13:19:17 +0200342 return int128_eq(addrrange_end(r1->addr), r2->addr.start)
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300343 && r1->mr == r2->mr
Avi Kivity08dafab2011-10-16 13:19:17 +0200344 && int128_eq(int128_add(int128_make64(r1->offset_in_region),
345 r1->addr.size),
346 int128_make64(r2->offset_in_region))
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300347 && r1->dirty_log_mask == r2->dirty_log_mask
Paolo Bonzinib138e652016-05-24 21:26:28 +0200348 && r1->romd_mode == r2->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300349 && r1->readonly == r2->readonly;
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300350}
351
Peter Crosthwaite8508e022013-06-03 15:31:56 +1000352/* Attempt to simplify a view by merging adjacent ranges */
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300353static void flatview_simplify(FlatView *view)
354{
355 unsigned i, j;
356
357 i = 0;
358 while (i < view->nr) {
359 j = i + 1;
360 while (j < view->nr
361 && can_merge(&view->ranges[j-1], &view->ranges[j])) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200362 int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300363 ++j;
364 }
365 ++i;
366 memmove(&view->ranges[i], &view->ranges[j],
367 (view->nr - j) * sizeof(view->ranges[j]));
368 view->nr -= j - i;
369 }
370}
371
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200372static bool memory_region_big_endian(MemoryRegion *mr)
373{
374#ifdef TARGET_WORDS_BIGENDIAN
375 return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
376#else
377 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
378#endif
379}
380
Paolo Bonzinie11ef3d2013-07-22 15:54:35 +0200381static bool memory_region_wrong_endianness(MemoryRegion *mr)
382{
383#ifdef TARGET_WORDS_BIGENDIAN
384 return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
385#else
386 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
387#endif
388}
389
390static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
391{
392 if (memory_region_wrong_endianness(mr)) {
393 switch (size) {
394 case 1:
395 break;
396 case 2:
397 *data = bswap16(*data);
398 break;
399 case 4:
400 *data = bswap32(*data);
401 break;
402 case 8:
403 *data = bswap64(*data);
404 break;
405 default:
406 abort();
407 }
408 }
409}
410
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800411static hwaddr memory_region_to_absolute_addr(MemoryRegion *mr, hwaddr offset)
412{
413 MemoryRegion *root;
414 hwaddr abs_addr = offset;
415
416 abs_addr += mr->addr;
417 for (root = mr; root->container; ) {
418 root = root->container;
419 abs_addr += root->addr;
420 }
421
422 return abs_addr;
423}
424
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800425static int get_cpu_index(void)
426{
427 if (current_cpu) {
428 return current_cpu->cpu_index;
429 }
430 return -1;
431}
432
Peter Maydellcc05c432015-04-26 16:49:23 +0100433static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
434 hwaddr addr,
435 uint64_t *value,
436 unsigned size,
437 unsigned shift,
438 uint64_t mask,
439 MemTxAttrs attrs)
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200440{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200441 uint64_t tmp;
442
443 tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800444 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800445 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800446 } else if (mr == &io_mem_notdirty) {
447 /* Accesses to code which has previously been translated into a TB show
448 * up in the MMIO path, as accesses to the io_mem_notdirty
449 * MemoryRegion. */
450 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800451 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
452 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800453 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800454 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200455 *value |= (tmp & mask) << shift;
Peter Maydellcc05c432015-04-26 16:49:23 +0100456 return MEMTX_OK;
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200457}
458
Peter Maydellcc05c432015-04-26 16:49:23 +0100459static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
460 hwaddr addr,
461 uint64_t *value,
462 unsigned size,
463 unsigned shift,
464 uint64_t mask,
465 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300466{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300467 uint64_t tmp;
468
469 tmp = mr->ops->read(mr->opaque, addr, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800470 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800471 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800472 } else if (mr == &io_mem_notdirty) {
473 /* Accesses to code which has previously been translated into a TB show
474 * up in the MMIO path, as accesses to the io_mem_notdirty
475 * MemoryRegion. */
476 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800477 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
478 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800479 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800480 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300481 *value |= (tmp & mask) << shift;
Peter Maydellcc05c432015-04-26 16:49:23 +0100482 return MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300483}
484
Peter Maydellcc05c432015-04-26 16:49:23 +0100485static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
486 hwaddr addr,
487 uint64_t *value,
488 unsigned size,
489 unsigned shift,
490 uint64_t mask,
491 MemTxAttrs attrs)
492{
493 uint64_t tmp = 0;
494 MemTxResult r;
495
Peter Maydellcc05c432015-04-26 16:49:23 +0100496 r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800497 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800498 trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800499 } else if (mr == &io_mem_notdirty) {
500 /* Accesses to code which has previously been translated into a TB show
501 * up in the MMIO path, as accesses to the io_mem_notdirty
502 * MemoryRegion. */
503 trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800504 } else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
505 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800506 trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800507 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100508 *value |= (tmp & mask) << shift;
509 return r;
510}
511
512static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
513 hwaddr addr,
514 uint64_t *value,
515 unsigned size,
516 unsigned shift,
517 uint64_t mask,
518 MemTxAttrs attrs)
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200519{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200520 uint64_t tmp;
521
522 tmp = (*value >> shift) & mask;
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800523 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800524 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800525 } else if (mr == &io_mem_notdirty) {
526 /* Accesses to code which has previously been translated into a TB show
527 * up in the MMIO path, as accesses to the io_mem_notdirty
528 * MemoryRegion. */
529 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800530 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
531 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800532 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800533 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200534 mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
Peter Maydellcc05c432015-04-26 16:49:23 +0100535 return MEMTX_OK;
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200536}
537
Peter Maydellcc05c432015-04-26 16:49:23 +0100538static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
539 hwaddr addr,
540 uint64_t *value,
541 unsigned size,
542 unsigned shift,
543 uint64_t mask,
544 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300545{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300546 uint64_t tmp;
547
548 tmp = (*value >> shift) & mask;
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800549 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800550 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800551 } else if (mr == &io_mem_notdirty) {
552 /* Accesses to code which has previously been translated into a TB show
553 * up in the MMIO path, as accesses to the io_mem_notdirty
554 * MemoryRegion. */
555 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800556 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
557 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800558 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800559 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300560 mr->ops->write(mr->opaque, addr, tmp, size);
Peter Maydellcc05c432015-04-26 16:49:23 +0100561 return MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300562}
563
Peter Maydellcc05c432015-04-26 16:49:23 +0100564static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
565 hwaddr addr,
566 uint64_t *value,
567 unsigned size,
568 unsigned shift,
569 uint64_t mask,
570 MemTxAttrs attrs)
571{
572 uint64_t tmp;
573
Peter Maydellcc05c432015-04-26 16:49:23 +0100574 tmp = (*value >> shift) & mask;
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800575 if (mr->subpage) {
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800576 trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
Hollis Blanchardf2d08942016-03-02 12:12:55 -0800577 } else if (mr == &io_mem_notdirty) {
578 /* Accesses to code which has previously been translated into a TB show
579 * up in the MMIO path, as accesses to the io_mem_notdirty
580 * MemoryRegion. */
581 trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
Hollis Blanchard4779dc12016-02-08 16:03:05 -0800582 } else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
583 hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
Hollis Blanchard5a68be92016-03-02 12:12:54 -0800584 trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
Hollis Blanchard23d92d62016-02-08 16:03:04 -0800585 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100586 return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
587}
588
589static MemTxResult access_with_adjusted_size(hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300590 uint64_t *value,
591 unsigned size,
592 unsigned access_size_min,
593 unsigned access_size_max,
KONRAD Frederic05e015f2017-09-21 12:04:20 +0200594 MemTxResult (*access_fn)
595 (MemoryRegion *mr,
596 hwaddr addr,
597 uint64_t *value,
598 unsigned size,
599 unsigned shift,
600 uint64_t mask,
601 MemTxAttrs attrs),
Peter Maydellcc05c432015-04-26 16:49:23 +0100602 MemoryRegion *mr,
603 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300604{
605 uint64_t access_mask;
606 unsigned access_size;
607 unsigned i;
Peter Maydellcc05c432015-04-26 16:49:23 +0100608 MemTxResult r = MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300609
610 if (!access_size_min) {
611 access_size_min = 1;
612 }
613 if (!access_size_max) {
614 access_size_max = 4;
615 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200616
617 /* FIXME: support unaligned access? */
Avi Kivity164a4dc2011-08-11 10:40:25 +0300618 access_size = MAX(MIN(size, access_size_max), access_size_min);
619 access_mask = -1ULL >> (64 - access_size * 8);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200620 if (memory_region_big_endian(mr)) {
621 for (i = 0; i < size; i += access_size) {
KONRAD Frederic05e015f2017-09-21 12:04:20 +0200622 r |= access_fn(mr, addr + i, value, access_size,
Peter Maydellcc05c432015-04-26 16:49:23 +0100623 (size - access_size - i) * 8, access_mask, attrs);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200624 }
625 } else {
626 for (i = 0; i < size; i += access_size) {
KONRAD Frederic05e015f2017-09-21 12:04:20 +0200627 r |= access_fn(mr, addr + i, value, access_size, i * 8,
Peter Maydellcc05c432015-04-26 16:49:23 +0100628 access_mask, attrs);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200629 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300630 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100631 return r;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300632}
633
Avi Kivitye2177952011-12-08 15:00:18 +0200634static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
635{
Avi Kivity0d673e32012-10-02 15:28:50 +0200636 AddressSpace *as;
637
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +0200638 while (mr->container) {
639 mr = mr->container;
Avi Kivitye2177952011-12-08 15:00:18 +0200640 }
Avi Kivity0d673e32012-10-02 15:28:50 +0200641 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
642 if (mr == as->root) {
643 return as;
644 }
Avi Kivitye2177952011-12-08 15:00:18 +0200645 }
Igor Mammedoveed2bac2014-06-02 15:25:06 +0200646 return NULL;
Avi Kivitye2177952011-12-08 15:00:18 +0200647}
648
Avi Kivity093bc2c2011-07-26 14:26:01 +0300649/* Render a memory region into the global view. Ranges in @view obscure
650 * ranges in @mr.
651 */
652static void render_memory_region(FlatView *view,
653 MemoryRegion *mr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200654 Int128 base,
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300655 AddrRange clip,
656 bool readonly)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300657{
658 MemoryRegion *subregion;
659 unsigned i;
Avi Kivitya8170e52012-10-23 12:30:10 +0200660 hwaddr offset_in_region;
Avi Kivity08dafab2011-10-16 13:19:17 +0200661 Int128 remain;
662 Int128 now;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300663 FlatRange fr;
664 AddrRange tmp;
665
Avi Kivity6bba19b2011-09-14 11:54:58 +0300666 if (!mr->enabled) {
667 return;
668 }
669
Avi Kivity08dafab2011-10-16 13:19:17 +0200670 int128_addto(&base, int128_make64(mr->addr));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300671 readonly |= mr->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300672
673 tmp = addrrange_make(base, mr->size);
674
675 if (!addrrange_intersects(tmp, clip)) {
676 return;
677 }
678
679 clip = addrrange_intersection(tmp, clip);
680
681 if (mr->alias) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200682 int128_subfrom(&base, int128_make64(mr->alias->addr));
683 int128_subfrom(&base, int128_make64(mr->alias_offset));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300684 render_memory_region(view, mr->alias, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300685 return;
686 }
687
688 /* Render subregions in priority order. */
689 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300690 render_memory_region(view, subregion, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300691 }
692
Avi Kivity14a3c102011-07-26 14:26:06 +0300693 if (!mr->terminates) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300694 return;
695 }
696
Avi Kivity08dafab2011-10-16 13:19:17 +0200697 offset_in_region = int128_get64(int128_sub(clip.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300698 base = clip.start;
699 remain = clip.size;
700
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000701 fr.mr = mr;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +0100702 fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
Paolo Bonzinib138e652016-05-24 21:26:28 +0200703 fr.romd_mode = mr->romd_mode;
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000704 fr.readonly = readonly;
705
Avi Kivity093bc2c2011-07-26 14:26:01 +0300706 /* Render the region itself into any gaps left by the current view. */
Avi Kivity08dafab2011-10-16 13:19:17 +0200707 for (i = 0; i < view->nr && int128_nz(remain); ++i) {
708 if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300709 continue;
710 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200711 if (int128_lt(base, view->ranges[i].addr.start)) {
712 now = int128_min(remain,
713 int128_sub(view->ranges[i].addr.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300714 fr.offset_in_region = offset_in_region;
715 fr.addr = addrrange_make(base, now);
716 flatview_insert(view, i, &fr);
717 ++i;
Avi Kivity08dafab2011-10-16 13:19:17 +0200718 int128_addto(&base, now);
719 offset_in_region += int128_get64(now);
720 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300721 }
Avi Kivityd26a8ca2012-10-29 18:22:36 +0200722 now = int128_sub(int128_min(int128_add(base, remain),
723 addrrange_end(view->ranges[i].addr)),
724 base);
725 int128_addto(&base, now);
726 offset_in_region += int128_get64(now);
727 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300728 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200729 if (int128_nz(remain)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300730 fr.offset_in_region = offset_in_region;
731 fr.addr = addrrange_make(base, remain);
732 flatview_insert(view, i, &fr);
733 }
734}
735
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000736static MemoryRegion *memory_region_get_flatview_root(MemoryRegion *mr)
737{
Paolo Bonzinie673ba92017-09-21 12:28:16 +0200738 while (mr->enabled) {
739 if (mr->alias) {
740 if (!mr->alias_offset && int128_ge(mr->size, mr->alias->size)) {
741 /* The alias is included in its entirety. Use it as
742 * the "real" root, so that we can share more FlatViews.
743 */
744 mr = mr->alias;
745 continue;
746 }
747 } else if (!mr->terminates) {
748 unsigned int found = 0;
749 MemoryRegion *child, *next = NULL;
750 QTAILQ_FOREACH(child, &mr->subregions, subregions_link) {
751 if (child->enabled) {
752 if (++found > 1) {
753 next = NULL;
754 break;
755 }
756 if (!child->addr && int128_ge(mr->size, child->size)) {
757 /* A child is included in its entirety. If it's the only
758 * enabled one, use it in the hope of finding an alias down the
759 * way. This will also let us share FlatViews.
760 */
761 next = child;
762 }
763 }
764 }
Alexey Kardashevskiy092aa2f2017-09-21 18:51:07 +1000765 if (found == 0) {
766 return NULL;
767 }
Paolo Bonzinie673ba92017-09-21 12:28:16 +0200768 if (next) {
769 mr = next;
770 continue;
771 }
772 }
773
Alexey Kardashevskiy092aa2f2017-09-21 18:51:07 +1000774 return mr;
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000775 }
776
Alexey Kardashevskiy092aa2f2017-09-21 18:51:07 +1000777 return NULL;
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000778}
779
Avi Kivity093bc2c2011-07-26 14:26:01 +0300780/* Render a memory topology into a list of disjoint absolute ranges. */
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200781static FlatView *generate_memory_topology(MemoryRegion *mr)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300782{
Alexey Kardashevskiy9bf561e2017-09-21 18:51:02 +1000783 int i;
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200784 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300785
Alexey Kardashevskiy89c177b2017-09-21 18:51:01 +1000786 view = flatview_new(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300787
Avi Kivity83f3c252012-10-07 12:59:55 +0200788 if (mr) {
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200789 render_memory_region(view, mr, int128_zero(),
Avi Kivity83f3c252012-10-07 12:59:55 +0200790 addrrange_make(int128_zero(), int128_2_64()), false);
791 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200792 flatview_simplify(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300793
Alexey Kardashevskiy9bf561e2017-09-21 18:51:02 +1000794 view->dispatch = address_space_dispatch_new(view);
795 for (i = 0; i < view->nr; i++) {
796 MemoryRegionSection mrs =
797 section_from_flat_range(&view->ranges[i], view);
798 flatview_add_to_dispatch(view, &mrs);
799 }
800 address_space_dispatch_compact(view->dispatch);
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +1000801 g_hash_table_replace(flat_views, mr, view);
Alexey Kardashevskiy9bf561e2017-09-21 18:51:02 +1000802
Avi Kivity093bc2c2011-07-26 14:26:01 +0300803 return view;
804}
805
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300806static void address_space_add_del_ioeventfds(AddressSpace *as,
807 MemoryRegionIoeventfd *fds_new,
808 unsigned fds_new_nb,
809 MemoryRegionIoeventfd *fds_old,
810 unsigned fds_old_nb)
811{
812 unsigned iold, inew;
Avi Kivity80a1ea32012-02-08 16:39:06 +0200813 MemoryRegionIoeventfd *fd;
814 MemoryRegionSection section;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300815
816 /* Generate a symmetric difference of the old and new fd sets, adding
817 * and deleting as necessary.
818 */
819
820 iold = inew = 0;
821 while (iold < fds_old_nb || inew < fds_new_nb) {
822 if (iold < fds_old_nb
823 && (inew == fds_new_nb
824 || memory_region_ioeventfd_before(fds_old[iold],
825 fds_new[inew]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200826 fd = &fds_old[iold];
827 section = (MemoryRegionSection) {
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000828 .fv = address_space_to_flatview(as),
Avi Kivity80a1ea32012-02-08 16:39:06 +0200829 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200830 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200831 };
Paolo Bonzini9a546352016-09-22 16:23:06 +0200832 MEMORY_LISTENER_CALL(as, eventfd_del, Forward, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200833 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300834 ++iold;
835 } else if (inew < fds_new_nb
836 && (iold == fds_old_nb
837 || memory_region_ioeventfd_before(fds_new[inew],
838 fds_old[iold]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200839 fd = &fds_new[inew];
840 section = (MemoryRegionSection) {
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000841 .fv = address_space_to_flatview(as),
Avi Kivity80a1ea32012-02-08 16:39:06 +0200842 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200843 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200844 };
Paolo Bonzini9a546352016-09-22 16:23:06 +0200845 MEMORY_LISTENER_CALL(as, eventfd_add, Reverse, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200846 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300847 ++inew;
848 } else {
849 ++iold;
850 ++inew;
851 }
852 }
853}
854
Paolo Bonzini856d7242013-05-06 11:57:21 +0200855static FlatView *address_space_get_flatview(AddressSpace *as)
856{
857 FlatView *view;
858
Paolo Bonzini374f2982013-05-17 12:37:03 +0200859 rcu_read_lock();
Paolo Bonzini447b0d02017-09-21 14:32:47 +0200860 do {
Alexey Kardashevskiy16620682017-09-21 18:50:58 +1000861 view = address_space_to_flatview(as);
Paolo Bonzini447b0d02017-09-21 14:32:47 +0200862 /* If somebody has replaced as->current_map concurrently,
863 * flatview_ref returns false.
864 */
865 } while (!flatview_ref(view));
Paolo Bonzini374f2982013-05-17 12:37:03 +0200866 rcu_read_unlock();
Paolo Bonzini856d7242013-05-06 11:57:21 +0200867 return view;
868}
869
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300870static void address_space_update_ioeventfds(AddressSpace *as)
871{
Paolo Bonzini99e86342013-05-06 10:26:13 +0200872 FlatView *view;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300873 FlatRange *fr;
874 unsigned ioeventfd_nb = 0;
875 MemoryRegionIoeventfd *ioeventfds = NULL;
876 AddrRange tmp;
877 unsigned i;
878
Paolo Bonzini856d7242013-05-06 11:57:21 +0200879 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +0200880 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300881 for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
882 tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200883 int128_sub(fr->addr.start,
884 int128_make64(fr->offset_in_region)));
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300885 if (addrrange_intersects(fr->addr, tmp)) {
886 ++ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -0500887 ioeventfds = g_realloc(ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300888 ioeventfd_nb * sizeof(*ioeventfds));
889 ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
890 ioeventfds[ioeventfd_nb-1].addr = tmp;
891 }
892 }
893 }
894
895 address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
896 as->ioeventfds, as->ioeventfd_nb);
897
Anthony Liguori7267c092011-08-20 22:09:37 -0500898 g_free(as->ioeventfds);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300899 as->ioeventfds = ioeventfds;
900 as->ioeventfd_nb = ioeventfd_nb;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200901 flatview_unref(view);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300902}
903
Avi Kivityb8af1af2011-07-26 14:26:12 +0300904static void address_space_update_topology_pass(AddressSpace *as,
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200905 const FlatView *old_view,
906 const FlatView *new_view,
Avi Kivityb8af1af2011-07-26 14:26:12 +0300907 bool adding)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300908{
Avi Kivity093bc2c2011-07-26 14:26:01 +0300909 unsigned iold, inew;
910 FlatRange *frold, *frnew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300911
912 /* Generate a symmetric difference of the old and new memory maps.
913 * Kill ranges in the old map, and instantiate ranges in the new map.
914 */
915 iold = inew = 0;
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200916 while (iold < old_view->nr || inew < new_view->nr) {
917 if (iold < old_view->nr) {
918 frold = &old_view->ranges[iold];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300919 } else {
920 frold = NULL;
921 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200922 if (inew < new_view->nr) {
923 frnew = &new_view->ranges[inew];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300924 } else {
925 frnew = NULL;
926 }
927
928 if (frold
929 && (!frnew
Avi Kivity08dafab2011-10-16 13:19:17 +0200930 || int128_lt(frold->addr.start, frnew->addr.start)
931 || (int128_eq(frold->addr.start, frnew->addr.start)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300932 && !flatrange_equal(frold, frnew)))) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000933 /* In old but not in new, or in both but attributes changed. */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300934
Avi Kivityb8af1af2011-07-26 14:26:12 +0300935 if (!adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200936 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300937 }
938
Avi Kivity093bc2c2011-07-26 14:26:01 +0300939 ++iold;
940 } else if (frold && frnew && flatrange_equal(frold, frnew)) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000941 /* In both and unchanged (except logging may have changed) */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300942
Avi Kivityb8af1af2011-07-26 14:26:12 +0300943 if (adding) {
Avi Kivity50c1e142012-02-08 21:36:02 +0200944 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200945 if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
946 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
947 frold->dirty_log_mask,
948 frnew->dirty_log_mask);
949 }
950 if (frold->dirty_log_mask & ~frnew->dirty_log_mask) {
951 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop,
952 frold->dirty_log_mask,
953 frnew->dirty_log_mask);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300954 }
Avi Kivity5a583342011-07-26 14:26:02 +0300955 }
956
Avi Kivity093bc2c2011-07-26 14:26:01 +0300957 ++iold;
958 ++inew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300959 } else {
960 /* In new */
961
Avi Kivityb8af1af2011-07-26 14:26:12 +0300962 if (adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200963 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300964 }
965
Avi Kivity093bc2c2011-07-26 14:26:01 +0300966 ++inew;
967 }
968 }
Avi Kivityb8af1af2011-07-26 14:26:12 +0300969}
970
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +1000971static void flatviews_init(void)
972{
Alexey Kardashevskiy092aa2f2017-09-21 18:51:07 +1000973 static FlatView *empty_view;
974
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +1000975 if (flat_views) {
976 return;
977 }
978
979 flat_views = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL,
980 (GDestroyNotify) flatview_unref);
Alexey Kardashevskiy092aa2f2017-09-21 18:51:07 +1000981 if (!empty_view) {
982 empty_view = generate_memory_topology(NULL);
983 /* We keep it alive forever in the global variable. */
984 flatview_ref(empty_view);
985 } else {
986 g_hash_table_replace(flat_views, NULL, empty_view);
987 flatview_ref(empty_view);
988 }
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +1000989}
990
991static void flatviews_reset(void)
992{
993 AddressSpace *as;
994
995 if (flat_views) {
996 g_hash_table_unref(flat_views);
997 flat_views = NULL;
998 }
999 flatviews_init();
1000
1001 /* Render unique FVs */
1002 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1003 MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
1004
1005 if (g_hash_table_lookup(flat_views, physmr)) {
1006 continue;
1007 }
1008
1009 generate_memory_topology(physmr);
1010 }
1011}
1012
1013static void address_space_set_flatview(AddressSpace *as)
Avi Kivityb8af1af2011-07-26 14:26:12 +03001014{
Alexey Kardashevskiy67ace392017-09-21 18:51:05 +10001015 FlatView *old_view = address_space_to_flatview(as);
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +10001016 MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
1017 FlatView *new_view = g_hash_table_lookup(flat_views, physmr);
1018
1019 assert(new_view);
1020
Alexey Kardashevskiy67ace392017-09-21 18:51:05 +10001021 if (old_view == new_view) {
1022 return;
1023 }
1024
1025 if (old_view) {
1026 flatview_ref(old_view);
1027 }
1028
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +10001029 flatview_ref(new_view);
Alexey Kardashevskiy9a62e242017-09-21 18:50:54 +10001030
1031 if (!QTAILQ_EMPTY(&as->listeners)) {
Alexey Kardashevskiy67ace392017-09-21 18:51:05 +10001032 FlatView tmpview = { .nr = 0 }, *old_view2 = old_view;
1033
1034 if (!old_view2) {
1035 old_view2 = &tmpview;
1036 }
1037 address_space_update_topology_pass(as, old_view2, new_view, false);
1038 address_space_update_topology_pass(as, old_view2, new_view, true);
Alexey Kardashevskiy9a62e242017-09-21 18:50:54 +10001039 }
Avi Kivityb8af1af2011-07-26 14:26:12 +03001040
Paolo Bonzini374f2982013-05-17 12:37:03 +02001041 /* Writes are protected by the BQL. */
1042 atomic_rcu_set(&as->current_map, new_view);
Alexey Kardashevskiy67ace392017-09-21 18:51:05 +10001043 if (old_view) {
1044 flatview_unref(old_view);
1045 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001046
1047 /* Note that all the old MemoryRegions are still alive up to this
1048 * point. This relieves most MemoryListeners from the need to
1049 * ref/unref the MemoryRegions they get---unless they use them
1050 * outside the iothread mutex, in which case precise reference
1051 * counting is necessary.
1052 */
Alexey Kardashevskiy67ace392017-09-21 18:51:05 +10001053 if (old_view) {
1054 flatview_unref(old_view);
1055 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001056}
1057
Alexey Kardashevskiy202fc012017-09-21 18:51:09 +10001058static void address_space_update_topology(AddressSpace *as)
1059{
1060 MemoryRegion *physmr = memory_region_get_flatview_root(as->root);
1061
1062 flatviews_init();
1063 if (!g_hash_table_lookup(flat_views, physmr)) {
1064 generate_memory_topology(physmr);
1065 }
1066 address_space_set_flatview(as);
1067}
1068
Avi Kivity4ef4db82011-07-26 14:26:13 +03001069void memory_region_transaction_begin(void)
1070{
Jan Kiszkabb880de2012-08-23 13:02:32 +02001071 qemu_flush_coalesced_mmio_buffer();
Avi Kivity4ef4db82011-07-26 14:26:13 +03001072 ++memory_region_transaction_depth;
1073}
1074
1075void memory_region_transaction_commit(void)
1076{
Avi Kivity0d673e32012-10-02 15:28:50 +02001077 AddressSpace *as;
1078
Avi Kivity4ef4db82011-07-26 14:26:13 +03001079 assert(memory_region_transaction_depth);
Jan Kiszka8d04fb52017-02-23 18:29:11 +00001080 assert(qemu_mutex_iothread_locked());
1081
Avi Kivity4ef4db82011-07-26 14:26:13 +03001082 --memory_region_transaction_depth;
Gonglei4dc56152014-05-08 11:47:32 +08001083 if (!memory_region_transaction_depth) {
1084 if (memory_region_update_pending) {
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +10001085 flatviews_reset();
1086
Gonglei4dc56152014-05-08 11:47:32 +08001087 MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
Jan Kiszka02e2b952012-08-23 13:02:31 +02001088
Gonglei4dc56152014-05-08 11:47:32 +08001089 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Alexey Kardashevskiy967dc9b2017-09-21 18:51:04 +10001090 address_space_set_flatview(as);
Alexey Kardashevskiy02218482017-09-21 18:51:03 +10001091 address_space_update_ioeventfds(as);
Gonglei4dc56152014-05-08 11:47:32 +08001092 }
Xu, Anthonyade9c1a2017-03-22 17:53:35 +00001093 memory_region_update_pending = false;
linzhecheng0b152092018-01-14 20:55:19 +08001094 ioeventfd_update_pending = false;
Gonglei4dc56152014-05-08 11:47:32 +08001095 MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
1096 } else if (ioeventfd_update_pending) {
1097 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1098 address_space_update_ioeventfds(as);
1099 }
Xu, Anthonyade9c1a2017-03-22 17:53:35 +00001100 ioeventfd_update_pending = false;
Jan Kiszka02e2b952012-08-23 13:02:31 +02001101 }
Gonglei4dc56152014-05-08 11:47:32 +08001102 }
Avi Kivity4ef4db82011-07-26 14:26:13 +03001103}
1104
Avi Kivity545e92e2011-08-08 19:58:48 +03001105static void memory_region_destructor_none(MemoryRegion *mr)
1106{
1107}
1108
1109static void memory_region_destructor_ram(MemoryRegion *mr)
1110{
Fam Zhengf1060c52016-03-01 14:18:22 +08001111 qemu_ram_free(mr->ram_block);
Avi Kivity545e92e2011-08-08 19:58:48 +03001112}
1113
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001114static bool memory_region_need_escape(char c)
1115{
1116 return c == '/' || c == '[' || c == '\\' || c == ']';
1117}
1118
1119static char *memory_region_escape_name(const char *name)
1120{
1121 const char *p;
1122 char *escaped, *q;
1123 uint8_t c;
1124 size_t bytes = 0;
1125
1126 for (p = name; *p; p++) {
1127 bytes += memory_region_need_escape(*p) ? 4 : 1;
1128 }
1129 if (bytes == p - name) {
1130 return g_memdup(name, bytes + 1);
1131 }
1132
1133 escaped = g_malloc(bytes + 1);
1134 for (p = name, q = escaped; *p; p++) {
1135 c = *p;
1136 if (unlikely(memory_region_need_escape(c))) {
1137 *q++ = '\\';
1138 *q++ = 'x';
1139 *q++ = "0123456789abcdef"[c >> 4];
1140 c = "0123456789abcdef"[c & 15];
1141 }
1142 *q++ = c;
1143 }
1144 *q = 0;
1145 return escaped;
1146}
1147
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001148static void memory_region_do_init(MemoryRegion *mr,
1149 Object *owner,
1150 const char *name,
1151 uint64_t size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001152{
Avi Kivity08dafab2011-10-16 13:19:17 +02001153 mr->size = int128_make64(size);
1154 if (size == UINT64_MAX) {
1155 mr->size = int128_2_64();
1156 }
Peter Maydell302fa282014-08-19 20:05:46 +01001157 mr->name = g_strdup(name);
Paolo Bonzini612263c2015-12-09 11:44:25 +01001158 mr->owner = owner;
Gonglei58eaa212016-02-22 16:34:55 +08001159 mr->ram_block = NULL;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001160
1161 if (name) {
Peter Crosthwaite843ef732014-08-19 23:56:26 -07001162 char *escaped_name = memory_region_escape_name(name);
1163 char *name_array = g_strdup_printf("%s[*]", escaped_name);
Paolo Bonzini612263c2015-12-09 11:44:25 +01001164
1165 if (!owner) {
1166 owner = container_get(qdev_get_machine(), "/unattached");
1167 }
1168
Peter Crosthwaite843ef732014-08-19 23:56:26 -07001169 object_property_add_child(owner, name_array, OBJECT(mr), &error_abort);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001170 object_unref(OBJECT(mr));
Peter Crosthwaite843ef732014-08-19 23:56:26 -07001171 g_free(name_array);
1172 g_free(escaped_name);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001173 }
1174}
1175
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001176void memory_region_init(MemoryRegion *mr,
1177 Object *owner,
1178 const char *name,
1179 uint64_t size)
1180{
1181 object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
1182 memory_region_do_init(mr, owner, name, size);
1183}
1184
Eric Blaked7bce992016-01-29 06:48:55 -07001185static void memory_region_get_addr(Object *obj, Visitor *v, const char *name,
1186 void *opaque, Error **errp)
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001187{
1188 MemoryRegion *mr = MEMORY_REGION(obj);
1189 uint64_t value = mr->addr;
1190
Eric Blake51e72bc2016-01-29 06:48:54 -07001191 visit_type_uint64(v, name, &value, errp);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001192}
1193
Eric Blaked7bce992016-01-29 06:48:55 -07001194static void memory_region_get_container(Object *obj, Visitor *v,
1195 const char *name, void *opaque,
1196 Error **errp)
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001197{
1198 MemoryRegion *mr = MEMORY_REGION(obj);
1199 gchar *path = (gchar *)"";
1200
1201 if (mr->container) {
1202 path = object_get_canonical_path(OBJECT(mr->container));
1203 }
Eric Blake51e72bc2016-01-29 06:48:54 -07001204 visit_type_str(v, name, &path, errp);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001205 if (mr->container) {
1206 g_free(path);
1207 }
1208}
1209
1210static Object *memory_region_resolve_container(Object *obj, void *opaque,
1211 const char *part)
1212{
1213 MemoryRegion *mr = MEMORY_REGION(obj);
1214
1215 return OBJECT(mr->container);
1216}
1217
Eric Blaked7bce992016-01-29 06:48:55 -07001218static void memory_region_get_priority(Object *obj, Visitor *v,
1219 const char *name, void *opaque,
1220 Error **errp)
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001221{
1222 MemoryRegion *mr = MEMORY_REGION(obj);
1223 int32_t value = mr->priority;
1224
Eric Blake51e72bc2016-01-29 06:48:54 -07001225 visit_type_int32(v, name, &value, errp);
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001226}
1227
Eric Blaked7bce992016-01-29 06:48:55 -07001228static void memory_region_get_size(Object *obj, Visitor *v, const char *name,
1229 void *opaque, Error **errp)
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001230{
1231 MemoryRegion *mr = MEMORY_REGION(obj);
1232 uint64_t value = memory_region_size(mr);
1233
Eric Blake51e72bc2016-01-29 06:48:54 -07001234 visit_type_uint64(v, name, &value, errp);
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001235}
1236
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001237static void memory_region_initfn(Object *obj)
1238{
1239 MemoryRegion *mr = MEMORY_REGION(obj);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001240 ObjectProperty *op;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001241
1242 mr->ops = &unassigned_mem_ops;
1243 mr->enabled = true;
1244 mr->romd_mode = true;
Jan Kiszka196ea132015-06-18 18:47:20 +02001245 mr->global_locking = true;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001246 mr->destructor = memory_region_destructor_none;
1247 QTAILQ_INIT(&mr->subregions);
1248 QTAILQ_INIT(&mr->coalesced);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001249
1250 op = object_property_add(OBJECT(mr), "container",
1251 "link<" TYPE_MEMORY_REGION ">",
1252 memory_region_get_container,
1253 NULL, /* memory_region_set_container */
1254 NULL, NULL, &error_abort);
1255 op->resolve = memory_region_resolve_container;
1256
1257 object_property_add(OBJECT(mr), "addr", "uint64",
1258 memory_region_get_addr,
1259 NULL, /* memory_region_set_addr */
1260 NULL, NULL, &error_abort);
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001261 object_property_add(OBJECT(mr), "priority", "uint32",
1262 memory_region_get_priority,
1263 NULL, /* memory_region_set_priority */
1264 NULL, NULL, &error_abort);
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001265 object_property_add(OBJECT(mr), "size", "uint64",
1266 memory_region_get_size,
1267 NULL, /* memory_region_set_size, */
1268 NULL, NULL, &error_abort);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001269}
1270
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001271static void iommu_memory_region_initfn(Object *obj)
1272{
1273 MemoryRegion *mr = MEMORY_REGION(obj);
1274
1275 mr->is_iommu = true;
1276}
1277
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001278static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
1279 unsigned size)
1280{
1281#ifdef DEBUG_UNASSIGNED
1282 printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
1283#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001284 if (current_cpu != NULL) {
1285 cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001286 }
Jan Kiszka68a74392013-09-02 18:43:31 +02001287 return 0;
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001288}
1289
1290static void unassigned_mem_write(void *opaque, hwaddr addr,
1291 uint64_t val, unsigned size)
1292{
1293#ifdef DEBUG_UNASSIGNED
1294 printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val);
1295#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001296 if (current_cpu != NULL) {
1297 cpu_unassigned_access(current_cpu, addr, true, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001298 }
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001299}
1300
Paolo Bonzinid1970632013-05-24 13:23:38 +02001301static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
1302 unsigned size, bool is_write)
1303{
1304 return false;
1305}
1306
1307const MemoryRegionOps unassigned_mem_ops = {
1308 .valid.accepts = unassigned_mem_accepts,
1309 .endianness = DEVICE_NATIVE_ENDIAN,
1310};
1311
Alex Williamson4a2e2422016-10-31 09:53:03 -06001312static uint64_t memory_region_ram_device_read(void *opaque,
1313 hwaddr addr, unsigned size)
1314{
1315 MemoryRegion *mr = opaque;
1316 uint64_t data = (uint64_t)~0;
1317
1318 switch (size) {
1319 case 1:
1320 data = *(uint8_t *)(mr->ram_block->host + addr);
1321 break;
1322 case 2:
1323 data = *(uint16_t *)(mr->ram_block->host + addr);
1324 break;
1325 case 4:
1326 data = *(uint32_t *)(mr->ram_block->host + addr);
1327 break;
1328 case 8:
1329 data = *(uint64_t *)(mr->ram_block->host + addr);
1330 break;
1331 }
1332
1333 trace_memory_region_ram_device_read(get_cpu_index(), mr, addr, data, size);
1334
1335 return data;
1336}
1337
1338static void memory_region_ram_device_write(void *opaque, hwaddr addr,
1339 uint64_t data, unsigned size)
1340{
1341 MemoryRegion *mr = opaque;
1342
1343 trace_memory_region_ram_device_write(get_cpu_index(), mr, addr, data, size);
1344
1345 switch (size) {
1346 case 1:
1347 *(uint8_t *)(mr->ram_block->host + addr) = (uint8_t)data;
1348 break;
1349 case 2:
1350 *(uint16_t *)(mr->ram_block->host + addr) = (uint16_t)data;
1351 break;
1352 case 4:
1353 *(uint32_t *)(mr->ram_block->host + addr) = (uint32_t)data;
1354 break;
1355 case 8:
1356 *(uint64_t *)(mr->ram_block->host + addr) = data;
1357 break;
1358 }
1359}
1360
1361static const MemoryRegionOps ram_device_mem_ops = {
1362 .read = memory_region_ram_device_read,
1363 .write = memory_region_ram_device_write,
Yongji Xiec99a29e2017-02-27 12:52:44 +08001364 .endianness = DEVICE_HOST_ENDIAN,
Alex Williamson4a2e2422016-10-31 09:53:03 -06001365 .valid = {
1366 .min_access_size = 1,
1367 .max_access_size = 8,
1368 .unaligned = true,
1369 },
1370 .impl = {
1371 .min_access_size = 1,
1372 .max_access_size = 8,
1373 .unaligned = true,
1374 },
1375};
1376
Paolo Bonzinid2702032013-05-24 11:55:06 +02001377bool memory_region_access_valid(MemoryRegion *mr,
1378 hwaddr addr,
1379 unsigned size,
1380 bool is_write)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001381{
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001382 int access_size_min, access_size_max;
1383 int access_size, i;
Avi Kivity897fa7c2011-11-13 13:05:27 +02001384
Avi Kivity093bc2c2011-07-26 14:26:01 +03001385 if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
1386 return false;
1387 }
1388
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001389 if (!mr->ops->valid.accepts) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001390 return true;
1391 }
1392
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001393 access_size_min = mr->ops->valid.min_access_size;
1394 if (!mr->ops->valid.min_access_size) {
1395 access_size_min = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001396 }
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001397
1398 access_size_max = mr->ops->valid.max_access_size;
1399 if (!mr->ops->valid.max_access_size) {
1400 access_size_max = 4;
1401 }
1402
1403 access_size = MAX(MIN(size, access_size_max), access_size_min);
1404 for (i = 0; i < size; i += access_size) {
1405 if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
1406 is_write)) {
1407 return false;
1408 }
1409 }
1410
Avi Kivity093bc2c2011-07-26 14:26:01 +03001411 return true;
1412}
1413
Peter Maydellcc05c432015-04-26 16:49:23 +01001414static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
1415 hwaddr addr,
1416 uint64_t *pval,
1417 unsigned size,
1418 MemTxAttrs attrs)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001419{
Peter Maydellcc05c432015-04-26 16:49:23 +01001420 *pval = 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001421
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001422 if (mr->ops->read) {
Peter Maydellcc05c432015-04-26 16:49:23 +01001423 return access_with_adjusted_size(addr, pval, size,
1424 mr->ops->impl.min_access_size,
1425 mr->ops->impl.max_access_size,
1426 memory_region_read_accessor,
1427 mr, attrs);
1428 } else if (mr->ops->read_with_attrs) {
1429 return access_with_adjusted_size(addr, pval, size,
1430 mr->ops->impl.min_access_size,
1431 mr->ops->impl.max_access_size,
1432 memory_region_read_with_attrs_accessor,
1433 mr, attrs);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001434 } else {
Peter Maydellcc05c432015-04-26 16:49:23 +01001435 return access_with_adjusted_size(addr, pval, size, 1, 4,
1436 memory_region_oldmmio_read_accessor,
1437 mr, attrs);
Avi Kivity74901c32011-07-26 14:26:10 +03001438 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001439}
1440
Peter Maydell3b643492015-04-26 16:49:23 +01001441MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
1442 hwaddr addr,
1443 uint64_t *pval,
1444 unsigned size,
1445 MemTxAttrs attrs)
Avi Kivitya621f382012-01-02 13:12:08 +02001446{
Peter Maydellcc05c432015-04-26 16:49:23 +01001447 MemTxResult r;
1448
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001449 if (!memory_region_access_valid(mr, addr, size, false)) {
1450 *pval = unassigned_mem_read(mr, addr, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001451 return MEMTX_DECODE_ERROR;
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001452 }
Avi Kivitya621f382012-01-02 13:12:08 +02001453
Peter Maydellcc05c432015-04-26 16:49:23 +01001454 r = memory_region_dispatch_read1(mr, addr, pval, size, attrs);
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001455 adjust_endianness(mr, pval, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001456 return r;
Avi Kivitya621f382012-01-02 13:12:08 +02001457}
1458
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03001459/* Return true if an eventfd was signalled */
1460static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr,
1461 hwaddr addr,
1462 uint64_t data,
1463 unsigned size,
1464 MemTxAttrs attrs)
1465{
1466 MemoryRegionIoeventfd ioeventfd = {
1467 .addr = addrrange_make(int128_make64(addr), int128_make64(size)),
1468 .data = data,
1469 };
1470 unsigned i;
1471
1472 for (i = 0; i < mr->ioeventfd_nb; i++) {
1473 ioeventfd.match_data = mr->ioeventfds[i].match_data;
1474 ioeventfd.e = mr->ioeventfds[i].e;
1475
1476 if (memory_region_ioeventfd_equal(ioeventfd, mr->ioeventfds[i])) {
1477 event_notifier_set(ioeventfd.e);
1478 return true;
1479 }
1480 }
1481
1482 return false;
1483}
1484
Peter Maydell3b643492015-04-26 16:49:23 +01001485MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
1486 hwaddr addr,
1487 uint64_t data,
1488 unsigned size,
1489 MemTxAttrs attrs)
Avi Kivitya621f382012-01-02 13:12:08 +02001490{
Avi Kivity897fa7c2011-11-13 13:05:27 +02001491 if (!memory_region_access_valid(mr, addr, size, true)) {
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001492 unassigned_mem_write(mr, addr, data, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001493 return MEMTX_DECODE_ERROR;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001494 }
1495
Avi Kivitya621f382012-01-02 13:12:08 +02001496 adjust_endianness(mr, &data, size);
1497
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03001498 if ((!kvm_eventfds_enabled()) &&
1499 memory_region_dispatch_write_eventfds(mr, addr, data, size, attrs)) {
1500 return MEMTX_OK;
1501 }
1502
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001503 if (mr->ops->write) {
Peter Maydellcc05c432015-04-26 16:49:23 +01001504 return access_with_adjusted_size(addr, &data, size,
1505 mr->ops->impl.min_access_size,
1506 mr->ops->impl.max_access_size,
1507 memory_region_write_accessor, mr,
1508 attrs);
1509 } else if (mr->ops->write_with_attrs) {
1510 return
1511 access_with_adjusted_size(addr, &data, size,
1512 mr->ops->impl.min_access_size,
1513 mr->ops->impl.max_access_size,
1514 memory_region_write_with_attrs_accessor,
1515 mr, attrs);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001516 } else {
Peter Maydellcc05c432015-04-26 16:49:23 +01001517 return access_with_adjusted_size(addr, &data, size, 1, 4,
1518 memory_region_oldmmio_write_accessor,
1519 mr, attrs);
Avi Kivity74901c32011-07-26 14:26:10 +03001520 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001521}
1522
Avi Kivity093bc2c2011-07-26 14:26:01 +03001523void memory_region_init_io(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001524 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001525 const MemoryRegionOps *ops,
1526 void *opaque,
1527 const char *name,
1528 uint64_t size)
1529{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001530 memory_region_init(mr, owner, name, size);
Pavel Fedin6d6d2ab2015-08-13 11:26:21 +01001531 mr->ops = ops ? ops : &unassigned_mem_ops;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001532 mr->opaque = opaque;
Avi Kivity14a3c102011-07-26 14:26:06 +03001533 mr->terminates = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001534}
1535
Peter Maydell1cfe48c2017-07-07 15:42:49 +01001536void memory_region_init_ram_nomigrate(MemoryRegion *mr,
1537 Object *owner,
1538 const char *name,
1539 uint64_t size,
1540 Error **errp)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001541{
Marcel Apfelbaum06329cc2017-12-13 16:37:37 +02001542 memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
1543}
1544
1545void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
1546 Object *owner,
1547 const char *name,
1548 uint64_t size,
1549 bool share,
1550 Error **errp)
1551{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001552 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001553 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001554 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +03001555 mr->destructor = memory_region_destructor_ram;
Marcel Apfelbaum06329cc2017-12-13 16:37:37 +02001556 mr->ram_block = qemu_ram_alloc(size, share, mr, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001557 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001558}
1559
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001560void memory_region_init_resizeable_ram(MemoryRegion *mr,
1561 Object *owner,
1562 const char *name,
1563 uint64_t size,
1564 uint64_t max_size,
1565 void (*resized)(const char*,
1566 uint64_t length,
1567 void *host),
1568 Error **errp)
1569{
1570 memory_region_init(mr, owner, name, size);
1571 mr->ram = true;
1572 mr->terminates = true;
1573 mr->destructor = memory_region_destructor_ram;
Fam Zheng8e41fb62016-03-01 14:18:21 +08001574 mr->ram_block = qemu_ram_alloc_resizeable(size, max_size, resized,
1575 mr, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001576 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001577}
1578
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001579#ifdef __linux__
1580void memory_region_init_ram_from_file(MemoryRegion *mr,
1581 struct Object *owner,
1582 const char *name,
1583 uint64_t size,
Haozhong Zhang98376842017-12-11 15:28:04 +08001584 uint64_t align,
Paolo Bonzinidbcb8982014-06-10 19:15:24 +08001585 bool share,
Paolo Bonzini7f56e742014-05-14 17:43:20 +08001586 const char *path,
1587 Error **errp)
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001588{
1589 memory_region_init(mr, owner, name, size);
1590 mr->ram = true;
1591 mr->terminates = true;
1592 mr->destructor = memory_region_destructor_ram;
Haozhong Zhang98376842017-12-11 15:28:04 +08001593 mr->align = align;
Fam Zheng8e41fb62016-03-01 14:18:21 +08001594 mr->ram_block = qemu_ram_alloc_from_file(size, mr, share, path, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001595 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001596}
Marc-André Lureaufea617c2017-06-02 18:12:24 +04001597
1598void memory_region_init_ram_from_fd(MemoryRegion *mr,
1599 struct Object *owner,
1600 const char *name,
1601 uint64_t size,
1602 bool share,
1603 int fd,
1604 Error **errp)
1605{
1606 memory_region_init(mr, owner, name, size);
1607 mr->ram = true;
1608 mr->terminates = true;
1609 mr->destructor = memory_region_destructor_ram;
1610 mr->ram_block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp);
1611 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
1612}
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001613#endif
1614
Avi Kivity093bc2c2011-07-26 14:26:01 +03001615void memory_region_init_ram_ptr(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001616 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001617 const char *name,
1618 uint64_t size,
1619 void *ptr)
1620{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001621 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001622 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001623 mr->terminates = true;
Eduardo Habkostfc3e7662015-11-06 19:20:05 -02001624 mr->destructor = memory_region_destructor_ram;
Paolo Bonzini677e7802015-03-23 10:53:21 +01001625 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Hu Taoef701d72014-09-09 13:27:54 +08001626
1627 /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
1628 assert(ptr != NULL);
Fam Zheng8e41fb62016-03-01 14:18:21 +08001629 mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001630}
1631
Alex Williamson21e00fa2016-10-31 09:53:03 -06001632void memory_region_init_ram_device_ptr(MemoryRegion *mr,
1633 Object *owner,
1634 const char *name,
1635 uint64_t size,
1636 void *ptr)
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301637{
Alex Williamson21e00fa2016-10-31 09:53:03 -06001638 memory_region_init_ram_ptr(mr, owner, name, size, ptr);
1639 mr->ram_device = true;
Alex Williamson4a2e2422016-10-31 09:53:03 -06001640 mr->ops = &ram_device_mem_ops;
1641 mr->opaque = mr;
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301642}
1643
Avi Kivity093bc2c2011-07-26 14:26:01 +03001644void memory_region_init_alias(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001645 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001646 const char *name,
1647 MemoryRegion *orig,
Avi Kivitya8170e52012-10-23 12:30:10 +02001648 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001649 uint64_t size)
1650{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001651 memory_region_init(mr, owner, name, size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001652 mr->alias = orig;
1653 mr->alias_offset = offset;
1654}
1655
Peter Maydellb59821a2017-07-07 15:42:50 +01001656void memory_region_init_rom_nomigrate(MemoryRegion *mr,
1657 struct Object *owner,
1658 const char *name,
1659 uint64_t size,
1660 Error **errp)
Peter Maydella1777f72016-07-04 13:06:35 +01001661{
1662 memory_region_init(mr, owner, name, size);
1663 mr->ram = true;
1664 mr->readonly = true;
1665 mr->terminates = true;
1666 mr->destructor = memory_region_destructor_ram;
Marcel Apfelbaum06329cc2017-12-13 16:37:37 +02001667 mr->ram_block = qemu_ram_alloc(size, false, mr, errp);
Peter Maydella1777f72016-07-04 13:06:35 +01001668 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
1669}
1670
Peter Maydellb59821a2017-07-07 15:42:50 +01001671void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
1672 Object *owner,
1673 const MemoryRegionOps *ops,
1674 void *opaque,
1675 const char *name,
1676 uint64_t size,
1677 Error **errp)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001678{
Peter Maydell39e0b032016-07-04 13:06:35 +01001679 assert(ops);
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001680 memory_region_init(mr, owner, name, size);
Avi Kivity7bc2b9c2011-08-25 14:56:14 +03001681 mr->ops = ops;
Avi Kivity75f59412011-08-26 00:35:15 +03001682 mr->opaque = opaque;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001683 mr->terminates = true;
Avi Kivity75c578d2012-01-02 15:40:52 +02001684 mr->rom_device = true;
Paolo Bonzini58268c82016-09-14 11:05:59 +02001685 mr->destructor = memory_region_destructor_ram;
Marcel Apfelbaum06329cc2017-12-13 16:37:37 +02001686 mr->ram_block = qemu_ram_alloc(size, false, mr, errp);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001687}
1688
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001689void memory_region_init_iommu(void *_iommu_mr,
1690 size_t instance_size,
1691 const char *mrtypename,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001692 Object *owner,
Avi Kivity30951152012-10-30 13:47:46 +02001693 const char *name,
1694 uint64_t size)
1695{
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001696 struct IOMMUMemoryRegion *iommu_mr;
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001697 struct MemoryRegion *mr;
1698
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001699 object_initialize(_iommu_mr, instance_size, mrtypename);
1700 mr = MEMORY_REGION(_iommu_mr);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001701 memory_region_do_init(mr, owner, name, size);
1702 iommu_mr = IOMMU_MEMORY_REGION(mr);
Avi Kivity30951152012-10-30 13:47:46 +02001703 mr->terminates = true; /* then re-forwards */
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001704 QLIST_INIT(&iommu_mr->iommu_notify);
1705 iommu_mr->iommu_notify_flags = IOMMU_NOTIFIER_NONE;
Avi Kivity30951152012-10-30 13:47:46 +02001706}
1707
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001708static void memory_region_finalize(Object *obj)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001709{
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001710 MemoryRegion *mr = MEMORY_REGION(obj);
1711
Paolo Bonzini2e2b8eb2015-10-01 10:59:50 +02001712 assert(!mr->container);
1713
1714 /* We know the region is not visible in any address space (it
1715 * does not have a container and cannot be a root either because
1716 * it has no references, so we can blindly clear mr->enabled.
1717 * memory_region_set_enabled instead could trigger a transaction
1718 * and cause an infinite loop.
1719 */
1720 mr->enabled = false;
1721 memory_region_transaction_begin();
1722 while (!QTAILQ_EMPTY(&mr->subregions)) {
1723 MemoryRegion *subregion = QTAILQ_FIRST(&mr->subregions);
1724 memory_region_del_subregion(mr, subregion);
1725 }
1726 memory_region_transaction_commit();
1727
Avi Kivity545e92e2011-08-08 19:58:48 +03001728 mr->destructor(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001729 memory_region_clear_coalescing(mr);
Peter Maydell302fa282014-08-19 20:05:46 +01001730 g_free((char *)mr->name);
Anthony Liguori7267c092011-08-20 22:09:37 -05001731 g_free(mr->ioeventfds);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001732}
1733
Paolo Bonzini803c0812013-05-07 06:59:09 +02001734Object *memory_region_owner(MemoryRegion *mr)
1735{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001736 Object *obj = OBJECT(mr);
1737 return obj->parent;
Paolo Bonzini803c0812013-05-07 06:59:09 +02001738}
1739
Paolo Bonzini46637be2013-05-07 09:06:00 +02001740void memory_region_ref(MemoryRegion *mr)
1741{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001742 /* MMIO callbacks most likely will access data that belongs
1743 * to the owner, hence the need to ref/unref the owner whenever
1744 * the memory region is in use.
1745 *
1746 * The memory region is a child of its owner. As long as the
1747 * owner doesn't call unparent itself on the memory region,
1748 * ref-ing the owner will also keep the memory region alive.
Paolo Bonzini612263c2015-12-09 11:44:25 +01001749 * Memory regions without an owner are supposed to never go away;
1750 * we do not ref/unref them because it slows down DMA sensibly.
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001751 */
Paolo Bonzini612263c2015-12-09 11:44:25 +01001752 if (mr && mr->owner) {
1753 object_ref(mr->owner);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001754 }
1755}
1756
1757void memory_region_unref(MemoryRegion *mr)
1758{
Paolo Bonzini612263c2015-12-09 11:44:25 +01001759 if (mr && mr->owner) {
1760 object_unref(mr->owner);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001761 }
1762}
1763
Avi Kivity093bc2c2011-07-26 14:26:01 +03001764uint64_t memory_region_size(MemoryRegion *mr)
1765{
Avi Kivity08dafab2011-10-16 13:19:17 +02001766 if (int128_eq(mr->size, int128_2_64())) {
1767 return UINT64_MAX;
1768 }
1769 return int128_get64(mr->size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001770}
1771
Peter Crosthwaite5d546d42014-08-14 23:55:03 -07001772const char *memory_region_name(const MemoryRegion *mr)
Avi Kivity8991c792011-12-20 15:53:11 +02001773{
Peter Crosthwaited1dd32a2014-08-25 20:10:24 -07001774 if (!mr->name) {
1775 ((MemoryRegion *)mr)->name =
1776 object_get_canonical_path_component(OBJECT(mr));
1777 }
Peter Maydell302fa282014-08-19 20:05:46 +01001778 return mr->name;
Avi Kivity8991c792011-12-20 15:53:11 +02001779}
1780
Alex Williamson21e00fa2016-10-31 09:53:03 -06001781bool memory_region_is_ram_device(MemoryRegion *mr)
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301782{
Alex Williamson21e00fa2016-10-31 09:53:03 -06001783 return mr->ram_device;
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301784}
1785
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +01001786uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
Avi Kivity55043ba2011-12-15 17:20:34 +02001787{
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001788 uint8_t mask = mr->dirty_log_mask;
Paolo Bonziniadaad612016-09-22 16:09:08 +02001789 if (global_dirty_log && mr->ram_block) {
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001790 mask |= (1 << DIRTY_MEMORY_MIGRATION);
1791 }
1792 return mask;
Avi Kivity55043ba2011-12-15 17:20:34 +02001793}
1794
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +01001795bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
1796{
1797 return memory_region_get_dirty_log_mask(mr) & (1 << client);
1798}
1799
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001800static void memory_region_update_iommu_notify_flags(IOMMUMemoryRegion *iommu_mr)
Peter Xu5bf3d312016-09-23 13:02:27 +08001801{
1802 IOMMUNotifierFlag flags = IOMMU_NOTIFIER_NONE;
1803 IOMMUNotifier *iommu_notifier;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001804 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
Peter Xu5bf3d312016-09-23 13:02:27 +08001805
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001806 IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
Peter Xu5bf3d312016-09-23 13:02:27 +08001807 flags |= iommu_notifier->notifier_flags;
1808 }
1809
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001810 if (flags != iommu_mr->iommu_notify_flags && imrc->notify_flag_changed) {
1811 imrc->notify_flag_changed(iommu_mr,
1812 iommu_mr->iommu_notify_flags,
1813 flags);
Peter Xu5bf3d312016-09-23 13:02:27 +08001814 }
1815
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001816 iommu_mr->iommu_notify_flags = flags;
Peter Xu5bf3d312016-09-23 13:02:27 +08001817}
1818
Peter Xucdb30812016-09-23 13:02:26 +08001819void memory_region_register_iommu_notifier(MemoryRegion *mr,
1820 IOMMUNotifier *n)
David Gibson06866572013-05-14 19:13:56 +10001821{
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001822 IOMMUMemoryRegion *iommu_mr;
1823
Jason Wangefcd38c2016-12-30 18:09:17 +08001824 if (mr->alias) {
1825 memory_region_register_iommu_notifier(mr->alias, n);
1826 return;
1827 }
1828
Peter Xucdb30812016-09-23 13:02:26 +08001829 /* We need to register for at least one bitfield */
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001830 iommu_mr = IOMMU_MEMORY_REGION(mr);
Peter Xucdb30812016-09-23 13:02:26 +08001831 assert(n->notifier_flags != IOMMU_NOTIFIER_NONE);
Peter Xu698feb52017-04-07 18:59:07 +08001832 assert(n->start <= n->end);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001833 QLIST_INSERT_HEAD(&iommu_mr->iommu_notify, n, node);
1834 memory_region_update_iommu_notify_flags(iommu_mr);
David Gibson06866572013-05-14 19:13:56 +10001835}
1836
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001837uint64_t memory_region_iommu_get_min_page_size(IOMMUMemoryRegion *iommu_mr)
David Gibsona788f222015-09-30 12:13:55 +10001838{
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001839 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1840
1841 if (imrc->get_min_page_size) {
1842 return imrc->get_min_page_size(iommu_mr);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001843 }
1844 return TARGET_PAGE_SIZE;
1845}
1846
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001847void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001848{
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001849 MemoryRegion *mr = MEMORY_REGION(iommu_mr);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001850 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001851 hwaddr addr, granularity;
David Gibsona788f222015-09-30 12:13:55 +10001852 IOMMUTLBEntry iotlb;
1853
Peter Xufaa362e2017-04-07 18:59:11 +08001854 /* If the IOMMU has its own replay callback, override */
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001855 if (imrc->replay) {
1856 imrc->replay(iommu_mr, n);
Peter Xufaa362e2017-04-07 18:59:11 +08001857 return;
1858 }
1859
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001860 granularity = memory_region_iommu_get_min_page_size(iommu_mr);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +10001861
David Gibsona788f222015-09-30 12:13:55 +10001862 for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10001863 iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE);
David Gibsona788f222015-09-30 12:13:55 +10001864 if (iotlb.perm != IOMMU_NONE) {
1865 n->notify(n, &iotlb);
1866 }
1867
1868 /* if (2^64 - MR size) < granularity, it's possible to get an
1869 * infinite loop here. This should catch such a wraparound */
1870 if ((addr + granularity) < addr) {
1871 break;
1872 }
1873 }
1874}
1875
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001876void memory_region_iommu_replay_all(IOMMUMemoryRegion *iommu_mr)
Peter Xude472e42017-04-07 18:59:09 +08001877{
1878 IOMMUNotifier *notifier;
1879
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001880 IOMMU_NOTIFIER_FOREACH(notifier, iommu_mr) {
1881 memory_region_iommu_replay(iommu_mr, notifier);
Peter Xude472e42017-04-07 18:59:09 +08001882 }
1883}
1884
Peter Xucdb30812016-09-23 13:02:26 +08001885void memory_region_unregister_iommu_notifier(MemoryRegion *mr,
1886 IOMMUNotifier *n)
David Gibson06866572013-05-14 19:13:56 +10001887{
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001888 IOMMUMemoryRegion *iommu_mr;
1889
Jason Wangefcd38c2016-12-30 18:09:17 +08001890 if (mr->alias) {
1891 memory_region_unregister_iommu_notifier(mr->alias, n);
1892 return;
1893 }
Peter Xucdb30812016-09-23 13:02:26 +08001894 QLIST_REMOVE(n, node);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001895 iommu_mr = IOMMU_MEMORY_REGION(mr);
1896 memory_region_update_iommu_notify_flags(iommu_mr);
David Gibson06866572013-05-14 19:13:56 +10001897}
1898
Peter Xubd2bfa42017-04-07 18:59:10 +08001899void memory_region_notify_one(IOMMUNotifier *notifier,
1900 IOMMUTLBEntry *entry)
David Gibson06866572013-05-14 19:13:56 +10001901{
Peter Xucdb30812016-09-23 13:02:26 +08001902 IOMMUNotifierFlag request_flags;
1903
Peter Xubd2bfa42017-04-07 18:59:10 +08001904 /*
1905 * Skip the notification if the notification does not overlap
1906 * with registered range.
1907 */
Maxime Coquelinb021d1c2017-10-10 11:42:47 +02001908 if (notifier->start > entry->iova + entry->addr_mask ||
Peter Xubd2bfa42017-04-07 18:59:10 +08001909 notifier->end < entry->iova) {
1910 return;
1911 }
Peter Xucdb30812016-09-23 13:02:26 +08001912
Peter Xubd2bfa42017-04-07 18:59:10 +08001913 if (entry->perm & IOMMU_RW) {
Peter Xucdb30812016-09-23 13:02:26 +08001914 request_flags = IOMMU_NOTIFIER_MAP;
1915 } else {
1916 request_flags = IOMMU_NOTIFIER_UNMAP;
1917 }
1918
Peter Xubd2bfa42017-04-07 18:59:10 +08001919 if (notifier->notifier_flags & request_flags) {
1920 notifier->notify(notifier, entry);
1921 }
1922}
1923
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001924void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr,
Peter Xubd2bfa42017-04-07 18:59:10 +08001925 IOMMUTLBEntry entry)
1926{
1927 IOMMUNotifier *iommu_notifier;
1928
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001929 assert(memory_region_is_iommu(MEMORY_REGION(iommu_mr)));
Peter Xubd2bfa42017-04-07 18:59:10 +08001930
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10001931 IOMMU_NOTIFIER_FOREACH(iommu_notifier, iommu_mr) {
Peter Xubd2bfa42017-04-07 18:59:10 +08001932 memory_region_notify_one(iommu_notifier, &entry);
Peter Xucdb30812016-09-23 13:02:26 +08001933 }
David Gibson06866572013-05-14 19:13:56 +10001934}
1935
Alexey Kardashevskiyf1334de2018-02-06 11:08:24 -07001936int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr,
1937 enum IOMMUMemoryRegionAttr attr,
1938 void *data)
1939{
1940 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
1941
1942 if (!imrc->get_attr) {
1943 return -EINVAL;
1944 }
1945
1946 return imrc->get_attr(iommu_mr, attr, data);
1947}
1948
Avi Kivity093bc2c2011-07-26 14:26:01 +03001949void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
1950{
Avi Kivity5a583342011-07-26 14:26:02 +03001951 uint8_t mask = 1 << client;
Paolo Bonzinideb809e2015-07-14 13:56:53 +02001952 uint8_t old_logging;
Avi Kivity5a583342011-07-26 14:26:02 +03001953
Paolo Bonzinidbddac62015-03-23 10:31:53 +01001954 assert(client == DIRTY_MEMORY_VGA);
Paolo Bonzinideb809e2015-07-14 13:56:53 +02001955 old_logging = mr->vga_logging_count;
1956 mr->vga_logging_count += log ? 1 : -1;
1957 if (!!old_logging == !!mr->vga_logging_count) {
1958 return;
1959 }
1960
Jan Kiszka59023ef2012-08-23 13:02:30 +02001961 memory_region_transaction_begin();
Avi Kivity5a583342011-07-26 14:26:02 +03001962 mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
Jan Kiszka22bde712012-11-05 16:45:56 +01001963 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001964 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001965}
1966
Avi Kivitya8170e52012-10-23 12:30:10 +02001967bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
1968 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001969{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001970 assert(mr->ram_block);
1971 return cpu_physical_memory_get_dirty(memory_region_get_ram_addr(mr) + addr,
1972 size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001973}
1974
Avi Kivitya8170e52012-10-23 12:30:10 +02001975void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
1976 hwaddr size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001977{
Fam Zheng8e41fb62016-03-01 14:18:21 +08001978 assert(mr->ram_block);
1979 cpu_physical_memory_set_dirty_range(memory_region_get_ram_addr(mr) + addr,
1980 size,
Paolo Bonzini58d27072015-03-23 11:56:01 +01001981 memory_region_get_dirty_log_mask(mr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001982}
1983
Paolo Bonzini0fe1eca2018-02-06 18:24:13 +01001984static void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001985{
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001986 MemoryListener *listener;
Avi Kivity0d673e32012-10-02 15:28:50 +02001987 AddressSpace *as;
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001988 FlatView *view;
Avi Kivity5a583342011-07-26 14:26:02 +03001989 FlatRange *fr;
1990
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02001991 /* If the same address space has multiple log_sync listeners, we
1992 * visit that address space's FlatView multiple times. But because
1993 * log_sync listeners are rare, it's still cheaper than walking each
1994 * address space once.
1995 */
1996 QTAILQ_FOREACH(listener, &memory_listeners, link) {
1997 if (!listener->log_sync) {
1998 continue;
1999 }
2000 as = listener->address_space;
2001 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002002 FOR_EACH_FLAT_RANGE(fr, view) {
Paolo Bonzini3ebb1812018-02-06 17:55:27 +01002003 if (fr->dirty_log_mask && (!mr || fr->mr == mr)) {
Alexey Kardashevskiy16620682017-09-21 18:50:58 +10002004 MemoryRegionSection mrs = section_from_flat_range(fr, view);
Paolo Bonzini0a752ee2016-09-23 11:08:54 +02002005 listener->log_sync(listener, &mrs);
Avi Kivity0d673e32012-10-02 15:28:50 +02002006 }
Avi Kivity5a583342011-07-26 14:26:02 +03002007 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02002008 flatview_unref(view);
Avi Kivity5a583342011-07-26 14:26:02 +03002009 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03002010}
2011
Paolo Bonzini0fe1eca2018-02-06 18:24:13 +01002012DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr,
2013 hwaddr addr,
2014 hwaddr size,
2015 unsigned client)
2016{
2017 assert(mr->ram_block);
2018 memory_region_sync_dirty_bitmap(mr);
2019 return cpu_physical_memory_snapshot_and_clear_dirty(
2020 memory_region_get_ram_addr(mr) + addr, size, client);
2021}
2022
2023bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap,
2024 hwaddr addr, hwaddr size)
2025{
2026 assert(mr->ram_block);
2027 return cpu_physical_memory_snapshot_get_dirty(snap,
2028 memory_region_get_ram_addr(mr) + addr, size);
2029}
2030
Avi Kivity093bc2c2011-07-26 14:26:01 +03002031void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
2032{
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03002033 if (mr->readonly != readonly) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02002034 memory_region_transaction_begin();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03002035 mr->readonly = readonly;
Jan Kiszka22bde712012-11-05 16:45:56 +01002036 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002037 memory_region_transaction_commit();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03002038 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03002039}
2040
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002041void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03002042{
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002043 if (mr->romd_mode != romd_mode) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02002044 memory_region_transaction_begin();
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002045 mr->romd_mode = romd_mode;
Jan Kiszka22bde712012-11-05 16:45:56 +01002046 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002047 memory_region_transaction_commit();
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03002048 }
2049}
2050
Avi Kivitya8170e52012-10-23 12:30:10 +02002051void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
2052 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03002053{
Fam Zheng8e41fb62016-03-01 14:18:21 +08002054 assert(mr->ram_block);
2055 cpu_physical_memory_test_and_clear_dirty(
2056 memory_region_get_ram_addr(mr) + addr, size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03002057}
2058
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08002059int memory_region_get_fd(MemoryRegion *mr)
2060{
Paolo Bonzini4ff87572016-03-25 12:30:16 +01002061 int fd;
2062
2063 rcu_read_lock();
2064 while (mr->alias) {
2065 mr = mr->alias;
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08002066 }
Paolo Bonzini4ff87572016-03-25 12:30:16 +01002067 fd = mr->ram_block->fd;
2068 rcu_read_unlock();
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08002069
Paolo Bonzini4ff87572016-03-25 12:30:16 +01002070 return fd;
2071}
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08002072
Avi Kivity093bc2c2011-07-26 14:26:01 +03002073void *memory_region_get_ram_ptr(MemoryRegion *mr)
2074{
Paolo Bonzini49b24af2015-12-16 10:30:47 +01002075 void *ptr;
2076 uint64_t offset = 0;
2077
2078 rcu_read_lock();
2079 while (mr->alias) {
2080 offset += mr->alias_offset;
2081 mr = mr->alias;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002082 }
Fam Zheng8e41fb62016-03-01 14:18:21 +08002083 assert(mr->ram_block);
Paolo Bonzini0878d0e2016-02-22 11:02:12 +01002084 ptr = qemu_map_ram_ptr(mr->ram_block, offset);
Paolo Bonzini49b24af2015-12-16 10:30:47 +01002085 rcu_read_unlock();
Avi Kivity093bc2c2011-07-26 14:26:01 +03002086
Paolo Bonzini0878d0e2016-02-22 11:02:12 +01002087 return ptr;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002088}
2089
Paolo Bonzini07bdaa42016-03-25 12:55:08 +01002090MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset)
2091{
2092 RAMBlock *block;
2093
2094 block = qemu_ram_block_from_host(ptr, false, offset);
2095 if (!block) {
2096 return NULL;
2097 }
2098
2099 return block->mr;
2100}
2101
Fam Zheng7ebb2742016-03-01 14:18:20 +08002102ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
2103{
2104 return mr->ram_block ? mr->ram_block->offset : RAM_ADDR_INVALID;
2105}
2106
Paolo Bonzini37d7c082015-03-23 10:21:46 +01002107void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
2108{
Fam Zheng8e41fb62016-03-01 14:18:21 +08002109 assert(mr->ram_block);
Paolo Bonzini37d7c082015-03-23 10:21:46 +01002110
Gongleifa53a0e2016-05-10 10:04:59 +08002111 qemu_ram_resize(mr->ram_block, newsize, errp);
Paolo Bonzini37d7c082015-03-23 10:21:46 +01002112}
2113
Avi Kivity0d673e32012-10-02 15:28:50 +02002114static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
Avi Kivity093bc2c2011-07-26 14:26:01 +03002115{
Paolo Bonzini99e86342013-05-06 10:26:13 +02002116 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002117 FlatRange *fr;
2118 CoalescedMemoryRange *cmr;
2119 AddrRange tmp;
Avi Kivity95d29942012-10-02 18:21:54 +02002120 MemoryRegionSection section;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002121
Paolo Bonzini856d7242013-05-06 11:57:21 +02002122 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002123 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03002124 if (fr->mr == mr) {
Avi Kivity95d29942012-10-02 18:21:54 +02002125 section = (MemoryRegionSection) {
Alexey Kardashevskiy16620682017-09-21 18:50:58 +10002126 .fv = view,
Avi Kivity95d29942012-10-02 18:21:54 +02002127 .offset_within_address_space = int128_get64(fr->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002128 .size = fr->addr.size,
Avi Kivity95d29942012-10-02 18:21:54 +02002129 };
2130
Paolo Bonzini9a546352016-09-22 16:23:06 +02002131 MEMORY_LISTENER_CALL(as, coalesced_mmio_del, Reverse, &section,
Avi Kivity95d29942012-10-02 18:21:54 +02002132 int128_get64(fr->addr.start),
2133 int128_get64(fr->addr.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03002134 QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
2135 tmp = addrrange_shift(cmr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02002136 int128_sub(fr->addr.start,
2137 int128_make64(fr->offset_in_region)));
Avi Kivity093bc2c2011-07-26 14:26:01 +03002138 if (!addrrange_intersects(tmp, fr->addr)) {
2139 continue;
2140 }
2141 tmp = addrrange_intersection(tmp, fr->addr);
Paolo Bonzini9a546352016-09-22 16:23:06 +02002142 MEMORY_LISTENER_CALL(as, coalesced_mmio_add, Forward, &section,
Avi Kivity95d29942012-10-02 18:21:54 +02002143 int128_get64(tmp.start),
2144 int128_get64(tmp.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03002145 }
2146 }
2147 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02002148 flatview_unref(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +03002149}
2150
Avi Kivity0d673e32012-10-02 15:28:50 +02002151static void memory_region_update_coalesced_range(MemoryRegion *mr)
2152{
2153 AddressSpace *as;
2154
2155 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
2156 memory_region_update_coalesced_range_as(mr, as);
2157 }
2158}
2159
Avi Kivity093bc2c2011-07-26 14:26:01 +03002160void memory_region_set_coalescing(MemoryRegion *mr)
2161{
2162 memory_region_clear_coalescing(mr);
Avi Kivity08dafab2011-10-16 13:19:17 +02002163 memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03002164}
2165
2166void memory_region_add_coalescing(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002167 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03002168 uint64_t size)
2169{
Anthony Liguori7267c092011-08-20 22:09:37 -05002170 CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03002171
Avi Kivity08dafab2011-10-16 13:19:17 +02002172 cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03002173 QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
2174 memory_region_update_coalesced_range(mr);
Jan Kiszkad4105152012-08-23 13:02:29 +02002175 memory_region_set_flush_coalesced(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03002176}
2177
2178void memory_region_clear_coalescing(MemoryRegion *mr)
2179{
2180 CoalescedMemoryRange *cmr;
Fam Zhengab5b3db2014-06-13 14:34:41 +08002181 bool updated = false;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002182
Jan Kiszkad4105152012-08-23 13:02:29 +02002183 qemu_flush_coalesced_mmio_buffer();
2184 mr->flush_coalesced_mmio = false;
2185
Avi Kivity093bc2c2011-07-26 14:26:01 +03002186 while (!QTAILQ_EMPTY(&mr->coalesced)) {
2187 cmr = QTAILQ_FIRST(&mr->coalesced);
2188 QTAILQ_REMOVE(&mr->coalesced, cmr, link);
Anthony Liguori7267c092011-08-20 22:09:37 -05002189 g_free(cmr);
Fam Zhengab5b3db2014-06-13 14:34:41 +08002190 updated = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002191 }
Fam Zhengab5b3db2014-06-13 14:34:41 +08002192
2193 if (updated) {
2194 memory_region_update_coalesced_range(mr);
2195 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03002196}
2197
Jan Kiszkad4105152012-08-23 13:02:29 +02002198void memory_region_set_flush_coalesced(MemoryRegion *mr)
2199{
2200 mr->flush_coalesced_mmio = true;
2201}
2202
2203void memory_region_clear_flush_coalesced(MemoryRegion *mr)
2204{
2205 qemu_flush_coalesced_mmio_buffer();
2206 if (QTAILQ_EMPTY(&mr->coalesced)) {
2207 mr->flush_coalesced_mmio = false;
2208 }
2209}
2210
Jan Kiszka196ea132015-06-18 18:47:20 +02002211void memory_region_clear_global_locking(MemoryRegion *mr)
2212{
2213 mr->global_locking = false;
2214}
2215
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03002216static bool userspace_eventfd_warning;
2217
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002218void memory_region_add_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002219 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002220 unsigned size,
2221 bool match_data,
2222 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002223 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002224{
2225 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02002226 .addr.start = int128_make64(addr),
2227 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002228 .match_data = match_data,
2229 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002230 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002231 };
2232 unsigned i;
2233
Pavel Fedin8c56c1a2015-11-20 12:37:16 +03002234 if (kvm_enabled() && (!(kvm_eventfds_enabled() ||
2235 userspace_eventfd_warning))) {
2236 userspace_eventfd_warning = true;
2237 error_report("Using eventfd without MMIO binding in KVM. "
2238 "Suboptimal performance expected");
2239 }
2240
Jason Wangb8aecea2015-11-06 16:02:45 +08002241 if (size) {
2242 adjust_endianness(mr, &mrfd.data, size);
2243 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02002244 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002245 for (i = 0; i < mr->ioeventfd_nb; ++i) {
2246 if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
2247 break;
2248 }
2249 }
2250 ++mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05002251 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002252 sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
2253 memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
2254 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
2255 mr->ioeventfds[i] = mrfd;
Gonglei4dc56152014-05-08 11:47:32 +08002256 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002257 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002258}
2259
2260void memory_region_del_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002261 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002262 unsigned size,
2263 bool match_data,
2264 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002265 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002266{
2267 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02002268 .addr.start = int128_make64(addr),
2269 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002270 .match_data = match_data,
2271 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02002272 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002273 };
2274 unsigned i;
2275
Jason Wangb8aecea2015-11-06 16:02:45 +08002276 if (size) {
2277 adjust_endianness(mr, &mrfd.data, size);
2278 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02002279 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002280 for (i = 0; i < mr->ioeventfd_nb; ++i) {
2281 if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
2282 break;
2283 }
2284 }
2285 assert(i != mr->ioeventfd_nb);
2286 memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
2287 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
2288 --mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05002289 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002290 sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
Gonglei4dc56152014-05-08 11:47:32 +08002291 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002292 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03002293}
2294
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002295static void memory_region_update_container_subregions(MemoryRegion *subregion)
Avi Kivity093bc2c2011-07-26 14:26:01 +03002296{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002297 MemoryRegion *mr = subregion->container;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002298 MemoryRegion *other;
2299
Jan Kiszka59023ef2012-08-23 13:02:30 +02002300 memory_region_transaction_begin();
2301
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02002302 memory_region_ref(subregion);
Avi Kivity093bc2c2011-07-26 14:26:01 +03002303 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03002304 if (subregion->priority >= other->priority) {
2305 QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
2306 goto done;
2307 }
2308 }
2309 QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
2310done:
Jan Kiszka22bde712012-11-05 16:45:56 +01002311 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002312 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03002313}
2314
Peter Crosthwaite05987012014-06-05 23:14:44 -07002315static void memory_region_add_subregion_common(MemoryRegion *mr,
2316 hwaddr offset,
2317 MemoryRegion *subregion)
2318{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002319 assert(!subregion->container);
2320 subregion->container = mr;
Peter Crosthwaite05987012014-06-05 23:14:44 -07002321 subregion->addr = offset;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002322 memory_region_update_container_subregions(subregion);
Peter Crosthwaite05987012014-06-05 23:14:44 -07002323}
Avi Kivity093bc2c2011-07-26 14:26:01 +03002324
2325void memory_region_add_subregion(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002326 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03002327 MemoryRegion *subregion)
2328{
Avi Kivity093bc2c2011-07-26 14:26:01 +03002329 subregion->priority = 0;
2330 memory_region_add_subregion_common(mr, offset, subregion);
2331}
2332
2333void memory_region_add_subregion_overlap(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02002334 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03002335 MemoryRegion *subregion,
Marcel Apfelbauma1ff8ae2013-09-16 11:21:14 +03002336 int priority)
Avi Kivity093bc2c2011-07-26 14:26:01 +03002337{
Avi Kivity093bc2c2011-07-26 14:26:01 +03002338 subregion->priority = priority;
2339 memory_region_add_subregion_common(mr, offset, subregion);
2340}
2341
2342void memory_region_del_subregion(MemoryRegion *mr,
2343 MemoryRegion *subregion)
2344{
Jan Kiszka59023ef2012-08-23 13:02:30 +02002345 memory_region_transaction_begin();
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002346 assert(subregion->container == mr);
2347 subregion->container = NULL;
Avi Kivity093bc2c2011-07-26 14:26:01 +03002348 QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02002349 memory_region_unref(subregion);
Jan Kiszka22bde712012-11-05 16:45:56 +01002350 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002351 memory_region_transaction_commit();
Avi Kivity6bba19b2011-09-14 11:54:58 +03002352}
2353
2354void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
2355{
2356 if (enabled == mr->enabled) {
2357 return;
2358 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02002359 memory_region_transaction_begin();
Avi Kivity6bba19b2011-09-14 11:54:58 +03002360 mr->enabled = enabled;
Jan Kiszka22bde712012-11-05 16:45:56 +01002361 memory_region_update_pending = true;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002362 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03002363}
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002364
Michael S. Tsirkine7af4c62014-12-16 11:21:23 +02002365void memory_region_set_size(MemoryRegion *mr, uint64_t size)
2366{
2367 Int128 s = int128_make64(size);
2368
2369 if (size == UINT64_MAX) {
2370 s = int128_2_64();
2371 }
2372 if (int128_eq(s, mr->size)) {
2373 return;
2374 }
2375 memory_region_transaction_begin();
2376 mr->size = s;
2377 memory_region_update_pending = true;
2378 memory_region_transaction_commit();
2379}
2380
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002381static void memory_region_readd_subregion(MemoryRegion *mr)
Avi Kivity2282e1a2011-09-14 12:10:12 +03002382{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002383 MemoryRegion *container = mr->container;
Avi Kivity2282e1a2011-09-14 12:10:12 +03002384
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002385 if (container) {
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002386 memory_region_transaction_begin();
2387 memory_region_ref(mr);
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002388 memory_region_del_subregion(container, mr);
2389 mr->container = container;
2390 memory_region_update_container_subregions(mr);
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002391 memory_region_unref(mr);
2392 memory_region_transaction_commit();
Avi Kivity2282e1a2011-09-14 12:10:12 +03002393 }
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002394}
Avi Kivity2282e1a2011-09-14 12:10:12 +03002395
Peter Crosthwaite67891b82014-06-05 23:15:18 -07002396void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
2397{
2398 if (addr != mr->addr) {
2399 mr->addr = addr;
2400 memory_region_readd_subregion(mr);
2401 }
Avi Kivity2282e1a2011-09-14 12:10:12 +03002402}
2403
Avi Kivitya8170e52012-10-23 12:30:10 +02002404void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
Avi Kivity47033592011-12-04 19:16:50 +02002405{
Avi Kivity47033592011-12-04 19:16:50 +02002406 assert(mr->alias);
Avi Kivity47033592011-12-04 19:16:50 +02002407
Jan Kiszka59023ef2012-08-23 13:02:30 +02002408 if (offset == mr->alias_offset) {
Avi Kivity47033592011-12-04 19:16:50 +02002409 return;
2410 }
2411
Jan Kiszka59023ef2012-08-23 13:02:30 +02002412 memory_region_transaction_begin();
2413 mr->alias_offset = offset;
Jan Kiszka22bde712012-11-05 16:45:56 +01002414 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02002415 memory_region_transaction_commit();
Avi Kivity47033592011-12-04 19:16:50 +02002416}
2417
Igor Mammedova2b257d2014-10-31 16:38:37 +00002418uint64_t memory_region_get_alignment(const MemoryRegion *mr)
2419{
2420 return mr->align;
2421}
2422
Avi Kivitye2177952011-12-08 15:00:18 +02002423static int cmp_flatrange_addr(const void *addr_, const void *fr_)
2424{
2425 const AddrRange *addr = addr_;
2426 const FlatRange *fr = fr_;
2427
2428 if (int128_le(addrrange_end(*addr), fr->addr.start)) {
2429 return -1;
2430 } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
2431 return 1;
2432 }
2433 return 0;
2434}
2435
Paolo Bonzini99e86342013-05-06 10:26:13 +02002436static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
Avi Kivitye2177952011-12-08 15:00:18 +02002437{
Paolo Bonzini99e86342013-05-06 10:26:13 +02002438 return bsearch(&addr, view->ranges, view->nr,
Avi Kivitye2177952011-12-08 15:00:18 +02002439 sizeof(FlatRange), cmp_flatrange_addr);
2440}
2441
Igor Mammedoveed2bac2014-06-02 15:25:06 +02002442bool memory_region_is_mapped(MemoryRegion *mr)
2443{
2444 return mr->container ? true : false;
2445}
2446
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002447/* Same as memory_region_find, but it does not add a reference to the
2448 * returned region. It must be called from an RCU critical section.
2449 */
2450static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr,
2451 hwaddr addr, uint64_t size)
Avi Kivitye2177952011-12-08 15:00:18 +02002452{
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002453 MemoryRegionSection ret = { .mr = NULL };
Paolo Bonzini73034e92013-05-07 15:48:28 +02002454 MemoryRegion *root;
2455 AddressSpace *as;
2456 AddrRange range;
Paolo Bonzini99e86342013-05-06 10:26:13 +02002457 FlatView *view;
Paolo Bonzini73034e92013-05-07 15:48:28 +02002458 FlatRange *fr;
Avi Kivitye2177952011-12-08 15:00:18 +02002459
Paolo Bonzini73034e92013-05-07 15:48:28 +02002460 addr += mr->addr;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02002461 for (root = mr; root->container; ) {
2462 root = root->container;
Paolo Bonzini73034e92013-05-07 15:48:28 +02002463 addr += root->addr;
2464 }
2465
2466 as = memory_region_to_address_space(root);
Igor Mammedoveed2bac2014-06-02 15:25:06 +02002467 if (!as) {
2468 return ret;
2469 }
Paolo Bonzini73034e92013-05-07 15:48:28 +02002470 range = addrrange_make(int128_make64(addr), int128_make64(size));
Paolo Bonzini99e86342013-05-06 10:26:13 +02002471
Alexey Kardashevskiy16620682017-09-21 18:50:58 +10002472 view = address_space_to_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002473 fr = flatview_lookup(view, range);
Avi Kivitye2177952011-12-08 15:00:18 +02002474 if (!fr) {
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002475 return ret;
Avi Kivitye2177952011-12-08 15:00:18 +02002476 }
2477
Paolo Bonzini99e86342013-05-06 10:26:13 +02002478 while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
Avi Kivitye2177952011-12-08 15:00:18 +02002479 --fr;
2480 }
2481
2482 ret.mr = fr->mr;
Alexey Kardashevskiy16620682017-09-21 18:50:58 +10002483 ret.fv = view;
Avi Kivitye2177952011-12-08 15:00:18 +02002484 range = addrrange_intersection(range, fr->addr);
2485 ret.offset_within_region = fr->offset_in_region;
2486 ret.offset_within_region += int128_get64(int128_sub(range.start,
2487 fr->addr.start));
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002488 ret.size = range.size;
Avi Kivitye2177952011-12-08 15:00:18 +02002489 ret.offset_within_address_space = int128_get64(range.start);
Avi Kivity7a8499e2012-02-08 17:01:23 +02002490 ret.readonly = fr->readonly;
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002491 return ret;
2492}
2493
2494MemoryRegionSection memory_region_find(MemoryRegion *mr,
2495 hwaddr addr, uint64_t size)
2496{
2497 MemoryRegionSection ret;
2498 rcu_read_lock();
2499 ret = memory_region_find_rcu(mr, addr, size);
2500 if (ret.mr) {
2501 memory_region_ref(ret.mr);
2502 }
Paolo Bonzini2b647662013-05-17 12:40:44 +02002503 rcu_read_unlock();
Avi Kivitye2177952011-12-08 15:00:18 +02002504 return ret;
2505}
2506
Paolo Bonzinic6742b12015-07-14 13:45:34 +02002507bool memory_region_present(MemoryRegion *container, hwaddr addr)
2508{
2509 MemoryRegion *mr;
2510
2511 rcu_read_lock();
2512 mr = memory_region_find_rcu(container, addr, 1).mr;
2513 rcu_read_unlock();
2514 return mr && mr != container;
2515}
2516
Paolo Bonzini9c1f8f42016-09-22 16:08:31 +02002517void memory_global_dirty_log_sync(void)
Avi Kivity86e775c2011-12-15 16:24:49 +02002518{
Paolo Bonzini3ebb1812018-02-06 17:55:27 +01002519 memory_region_sync_dirty_bitmap(NULL);
Avi Kivity7664e802011-12-11 14:47:25 +02002520}
2521
Jay Zhou19310762017-07-28 18:28:53 +08002522static VMChangeStateEntry *vmstate_change;
2523
Avi Kivity7664e802011-12-11 14:47:25 +02002524void memory_global_dirty_log_start(void)
2525{
Jay Zhou19310762017-07-28 18:28:53 +08002526 if (vmstate_change) {
2527 qemu_del_vm_change_state_handler(vmstate_change);
2528 vmstate_change = NULL;
2529 }
2530
Avi Kivity7664e802011-12-11 14:47:25 +02002531 global_dirty_log = true;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01002532
Avi Kivity7376e582012-02-08 21:05:17 +02002533 MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01002534
2535 /* Refresh DIRTY_LOG_MIGRATION bit. */
2536 memory_region_transaction_begin();
2537 memory_region_update_pending = true;
2538 memory_region_transaction_commit();
Avi Kivity7664e802011-12-11 14:47:25 +02002539}
2540
Jay Zhou19310762017-07-28 18:28:53 +08002541static void memory_global_dirty_log_do_stop(void)
Avi Kivity7664e802011-12-11 14:47:25 +02002542{
Avi Kivity7664e802011-12-11 14:47:25 +02002543 global_dirty_log = false;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01002544
2545 /* Refresh DIRTY_LOG_MIGRATION bit. */
2546 memory_region_transaction_begin();
2547 memory_region_update_pending = true;
2548 memory_region_transaction_commit();
2549
Avi Kivity7376e582012-02-08 21:05:17 +02002550 MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
Avi Kivity7664e802011-12-11 14:47:25 +02002551}
2552
Jay Zhou19310762017-07-28 18:28:53 +08002553static void memory_vm_change_state_handler(void *opaque, int running,
2554 RunState state)
2555{
2556 if (running) {
2557 memory_global_dirty_log_do_stop();
2558
2559 if (vmstate_change) {
2560 qemu_del_vm_change_state_handler(vmstate_change);
2561 vmstate_change = NULL;
2562 }
2563 }
2564}
2565
2566void memory_global_dirty_log_stop(void)
2567{
2568 if (!runstate_is_running()) {
2569 if (vmstate_change) {
2570 return;
2571 }
2572 vmstate_change = qemu_add_vm_change_state_handler(
2573 memory_vm_change_state_handler, NULL);
2574 return;
2575 }
2576
2577 memory_global_dirty_log_do_stop();
2578}
2579
Avi Kivity7664e802011-12-11 14:47:25 +02002580static void listener_add_address_space(MemoryListener *listener,
2581 AddressSpace *as)
2582{
Paolo Bonzini99e86342013-05-06 10:26:13 +02002583 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02002584 FlatRange *fr;
2585
Paolo Bonzini680a4782015-11-02 09:23:52 +01002586 if (listener->begin) {
2587 listener->begin(listener);
2588 }
Avi Kivity7664e802011-12-11 14:47:25 +02002589 if (global_dirty_log) {
Avi Kivity975aefe2012-10-02 16:39:57 +02002590 if (listener->log_global_start) {
2591 listener->log_global_start(listener);
2592 }
Avi Kivity7664e802011-12-11 14:47:25 +02002593 }
Avi Kivity975aefe2012-10-02 16:39:57 +02002594
Paolo Bonzini856d7242013-05-06 11:57:21 +02002595 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002596 FOR_EACH_FLAT_RANGE(fr, view) {
David Hildenbrand279836f2017-10-16 16:43:02 +02002597 MemoryRegionSection section = section_from_flat_range(fr, view);
2598
Avi Kivity975aefe2012-10-02 16:39:57 +02002599 if (listener->region_add) {
2600 listener->region_add(listener, &section);
2601 }
David Hildenbrandae990e62017-10-16 16:42:56 +02002602 if (fr->dirty_log_mask && listener->log_start) {
2603 listener->log_start(listener, &section, 0, fr->dirty_log_mask);
2604 }
Avi Kivity7664e802011-12-11 14:47:25 +02002605 }
Paolo Bonzini680a4782015-11-02 09:23:52 +01002606 if (listener->commit) {
2607 listener->commit(listener);
2608 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02002609 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02002610}
2611
Peter Xud25836c2018-01-22 14:02:44 +08002612static void listener_del_address_space(MemoryListener *listener,
2613 AddressSpace *as)
2614{
2615 FlatView *view;
2616 FlatRange *fr;
2617
2618 if (listener->begin) {
2619 listener->begin(listener);
2620 }
2621 view = address_space_get_flatview(as);
2622 FOR_EACH_FLAT_RANGE(fr, view) {
2623 MemoryRegionSection section = section_from_flat_range(fr, view);
2624
2625 if (fr->dirty_log_mask && listener->log_stop) {
2626 listener->log_stop(listener, &section, fr->dirty_log_mask, 0);
2627 }
2628 if (listener->region_del) {
2629 listener->region_del(listener, &section);
2630 }
2631 }
2632 if (listener->commit) {
2633 listener->commit(listener);
2634 }
2635 flatview_unref(view);
2636}
2637
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002638void memory_listener_register(MemoryListener *listener, AddressSpace *as)
Avi Kivity7664e802011-12-11 14:47:25 +02002639{
Avi Kivity72e22d22012-02-08 15:05:50 +02002640 MemoryListener *other = NULL;
2641
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002642 listener->address_space = as;
Avi Kivity72e22d22012-02-08 15:05:50 +02002643 if (QTAILQ_EMPTY(&memory_listeners)
2644 || listener->priority >= QTAILQ_LAST(&memory_listeners,
2645 memory_listeners)->priority) {
2646 QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
2647 } else {
2648 QTAILQ_FOREACH(other, &memory_listeners, link) {
2649 if (listener->priority < other->priority) {
2650 break;
2651 }
2652 }
2653 QTAILQ_INSERT_BEFORE(other, listener, link);
2654 }
Avi Kivity0d673e32012-10-02 15:28:50 +02002655
Paolo Bonzini9a546352016-09-22 16:23:06 +02002656 if (QTAILQ_EMPTY(&as->listeners)
2657 || listener->priority >= QTAILQ_LAST(&as->listeners,
2658 memory_listeners)->priority) {
2659 QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as);
2660 } else {
2661 QTAILQ_FOREACH(other, &as->listeners, link_as) {
2662 if (listener->priority < other->priority) {
2663 break;
2664 }
2665 }
2666 QTAILQ_INSERT_BEFORE(other, listener, link_as);
2667 }
2668
Paolo Bonzinid45fa782016-09-22 16:11:54 +02002669 listener_add_address_space(listener, as);
Avi Kivity7664e802011-12-11 14:47:25 +02002670}
2671
2672void memory_listener_unregister(MemoryListener *listener)
2673{
Paolo Bonzini1d8280c2017-01-27 16:40:12 +01002674 if (!listener->address_space) {
2675 return;
2676 }
2677
Peter Xud25836c2018-01-22 14:02:44 +08002678 listener_del_address_space(listener, listener->address_space);
Avi Kivity72e22d22012-02-08 15:05:50 +02002679 QTAILQ_REMOVE(&memory_listeners, listener, link);
Paolo Bonzini9a546352016-09-22 16:23:06 +02002680 QTAILQ_REMOVE(&listener->address_space->listeners, listener, link_as);
Paolo Bonzini1d8280c2017-01-27 16:40:12 +01002681 listener->address_space = NULL;
Avi Kivity86e775c2011-12-15 16:24:49 +02002682}
Avi Kivitye2177952011-12-08 15:00:18 +02002683
KONRAD Fredericc9356742016-10-19 15:06:49 +02002684bool memory_region_request_mmio_ptr(MemoryRegion *mr, hwaddr addr)
2685{
2686 void *host;
2687 unsigned size = 0;
2688 unsigned offset = 0;
2689 Object *new_interface;
2690
2691 if (!mr || !mr->ops->request_ptr) {
2692 return false;
2693 }
2694
2695 /*
2696 * Avoid an update if the request_ptr call
2697 * memory_region_invalidate_mmio_ptr which seems to be likely when we use
2698 * a cache.
2699 */
2700 memory_region_transaction_begin();
2701
2702 host = mr->ops->request_ptr(mr->opaque, addr - mr->addr, &size, &offset);
2703
2704 if (!host || !size) {
2705 memory_region_transaction_commit();
2706 return false;
2707 }
2708
2709 new_interface = object_new("mmio_interface");
2710 qdev_prop_set_uint64(DEVICE(new_interface), "start", offset);
2711 qdev_prop_set_uint64(DEVICE(new_interface), "end", offset + size - 1);
2712 qdev_prop_set_bit(DEVICE(new_interface), "ro", true);
2713 qdev_prop_set_ptr(DEVICE(new_interface), "host_ptr", host);
2714 qdev_prop_set_ptr(DEVICE(new_interface), "subregion", mr);
2715 object_property_set_bool(OBJECT(new_interface), true, "realized", NULL);
2716
2717 memory_region_transaction_commit();
2718 return true;
2719}
2720
2721typedef struct MMIOPtrInvalidate {
2722 MemoryRegion *mr;
2723 hwaddr offset;
2724 unsigned size;
2725 int busy;
2726 int allocated;
2727} MMIOPtrInvalidate;
2728
2729#define MAX_MMIO_INVALIDATE 10
2730static MMIOPtrInvalidate mmio_ptr_invalidate_list[MAX_MMIO_INVALIDATE];
2731
2732static void memory_region_do_invalidate_mmio_ptr(CPUState *cpu,
2733 run_on_cpu_data data)
2734{
2735 MMIOPtrInvalidate *invalidate_data = (MMIOPtrInvalidate *)data.host_ptr;
2736 MemoryRegion *mr = invalidate_data->mr;
2737 hwaddr offset = invalidate_data->offset;
2738 unsigned size = invalidate_data->size;
2739 MemoryRegionSection section = memory_region_find(mr, offset, size);
2740
2741 qemu_mutex_lock_iothread();
2742
2743 /* Reset dirty so this doesn't happen later. */
2744 cpu_physical_memory_test_and_clear_dirty(offset, size, 1);
2745
2746 if (section.mr != mr) {
2747 /* memory_region_find add a ref on section.mr */
2748 memory_region_unref(section.mr);
2749 if (MMIO_INTERFACE(section.mr->owner)) {
2750 /* We found the interface just drop it. */
2751 object_property_set_bool(section.mr->owner, false, "realized",
2752 NULL);
2753 object_unref(section.mr->owner);
2754 object_unparent(section.mr->owner);
2755 }
2756 }
2757
2758 qemu_mutex_unlock_iothread();
2759
2760 if (invalidate_data->allocated) {
2761 g_free(invalidate_data);
2762 } else {
2763 invalidate_data->busy = 0;
2764 }
2765}
2766
2767void memory_region_invalidate_mmio_ptr(MemoryRegion *mr, hwaddr offset,
2768 unsigned size)
2769{
2770 size_t i;
2771 MMIOPtrInvalidate *invalidate_data = NULL;
2772
2773 for (i = 0; i < MAX_MMIO_INVALIDATE; i++) {
2774 if (atomic_cmpxchg(&(mmio_ptr_invalidate_list[i].busy), 0, 1) == 0) {
2775 invalidate_data = &mmio_ptr_invalidate_list[i];
2776 break;
2777 }
2778 }
2779
2780 if (!invalidate_data) {
2781 invalidate_data = g_malloc0(sizeof(MMIOPtrInvalidate));
2782 invalidate_data->allocated = 1;
2783 }
2784
2785 invalidate_data->mr = mr;
2786 invalidate_data->offset = offset;
2787 invalidate_data->size = size;
2788
2789 async_safe_run_on_cpu(first_cpu, memory_region_do_invalidate_mmio_ptr,
2790 RUN_ON_CPU_HOST_PTR(invalidate_data));
2791}
2792
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002793void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002794{
Paolo Bonziniac951902015-02-11 15:21:04 +01002795 memory_region_ref(root);
Avi Kivity8786db72012-10-02 13:53:41 +02002796 as->root = root;
Alexey Kardashevskiy67ace392017-09-21 18:51:05 +10002797 as->current_map = NULL;
Avi Kivity4c19eb72012-10-30 13:47:44 +02002798 as->ioeventfd_nb = 0;
2799 as->ioeventfds = NULL;
Paolo Bonzini9a546352016-09-22 16:23:06 +02002800 QTAILQ_INIT(&as->listeners);
Avi Kivity0d673e32012-10-02 15:28:50 +02002801 QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002802 as->name = g_strdup(name ? name : "anonymous");
Alexey Kardashevskiy202fc012017-09-21 18:51:09 +10002803 address_space_update_topology(as);
2804 address_space_update_ioeventfds(as);
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002805}
Avi Kivity658b2222011-07-26 14:26:08 +03002806
Paolo Bonzini374f2982013-05-17 12:37:03 +02002807static void do_address_space_destroy(AddressSpace *as)
Avi Kivity83f3c252012-10-07 12:59:55 +02002808{
Paolo Bonzini9a546352016-09-22 16:23:06 +02002809 assert(QTAILQ_EMPTY(&as->listeners));
David Gibson078c44f2014-05-30 12:59:00 -06002810
Paolo Bonzini856d7242013-05-06 11:57:21 +02002811 flatview_unref(as->current_map);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002812 g_free(as->name);
Avi Kivity4c19eb72012-10-30 13:47:44 +02002813 g_free(as->ioeventfds);
Paolo Bonziniac951902015-02-11 15:21:04 +01002814 memory_region_unref(as->root);
Avi Kivity83f3c252012-10-07 12:59:55 +02002815}
2816
Paolo Bonzini374f2982013-05-17 12:37:03 +02002817void address_space_destroy(AddressSpace *as)
2818{
Paolo Bonziniac951902015-02-11 15:21:04 +01002819 MemoryRegion *root = as->root;
2820
Paolo Bonzini374f2982013-05-17 12:37:03 +02002821 /* Flush out anything from MemoryListeners listening in on this */
2822 memory_region_transaction_begin();
2823 as->root = NULL;
2824 memory_region_transaction_commit();
2825 QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
2826
2827 /* At this point, as->dispatch and as->current_map are dummy
2828 * entries that the guest should never use. Wait for the old
2829 * values to expire before freeing the data.
2830 */
Paolo Bonziniac951902015-02-11 15:21:04 +01002831 as->root = root;
Paolo Bonzini374f2982013-05-17 12:37:03 +02002832 call_rcu(as, do_address_space_destroy, rcu);
2833}
2834
Peter Xu4e831902017-01-16 16:40:04 +08002835static const char *memory_region_type(MemoryRegion *mr)
2836{
2837 if (memory_region_is_ram_device(mr)) {
2838 return "ramd";
2839 } else if (memory_region_is_romd(mr)) {
2840 return "romd";
2841 } else if (memory_region_is_rom(mr)) {
2842 return "rom";
2843 } else if (memory_region_is_ram(mr)) {
2844 return "ram";
2845 } else {
2846 return "i/o";
2847 }
2848}
2849
Blue Swirl314e2982011-09-11 20:22:05 +00002850typedef struct MemoryRegionList MemoryRegionList;
2851
2852struct MemoryRegionList {
2853 const MemoryRegion *mr;
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002854 QTAILQ_ENTRY(MemoryRegionList) mrqueue;
Blue Swirl314e2982011-09-11 20:22:05 +00002855};
2856
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002857typedef QTAILQ_HEAD(mrqueue, MemoryRegionList) MemoryRegionListHead;
Blue Swirl314e2982011-09-11 20:22:05 +00002858
Peter Xu4e831902017-01-16 16:40:04 +08002859#define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \
2860 int128_sub((size), int128_one())) : 0)
2861#define MTREE_INDENT " "
2862
Blue Swirl314e2982011-09-11 20:22:05 +00002863static void mtree_print_mr(fprintf_function mon_printf, void *f,
2864 const MemoryRegion *mr, unsigned int level,
Avi Kivitya8170e52012-10-23 12:30:10 +02002865 hwaddr base,
Jan Kiszka9479c572011-09-27 15:00:41 +02002866 MemoryRegionListHead *alias_print_queue)
Blue Swirl314e2982011-09-11 20:22:05 +00002867{
Jan Kiszka9479c572011-09-27 15:00:41 +02002868 MemoryRegionList *new_ml, *ml, *next_ml;
2869 MemoryRegionListHead submr_print_queue;
Blue Swirl314e2982011-09-11 20:22:05 +00002870 const MemoryRegion *submr;
2871 unsigned int i;
Peter Xub31f8412017-03-14 20:56:27 +08002872 hwaddr cur_start, cur_end;
Blue Swirl314e2982011-09-11 20:22:05 +00002873
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002874 if (!mr) {
Blue Swirl314e2982011-09-11 20:22:05 +00002875 return;
2876 }
2877
2878 for (i = 0; i < level; i++) {
Peter Xu4e831902017-01-16 16:40:04 +08002879 mon_printf(f, MTREE_INDENT);
Blue Swirl314e2982011-09-11 20:22:05 +00002880 }
2881
Peter Xub31f8412017-03-14 20:56:27 +08002882 cur_start = base + mr->addr;
2883 cur_end = cur_start + MR_SIZE(mr->size);
2884
2885 /*
2886 * Try to detect overflow of memory region. This should never
2887 * happen normally. When it happens, we dump something to warn the
2888 * user who is observing this.
2889 */
2890 if (cur_start < base || cur_end < cur_start) {
2891 mon_printf(f, "[DETECTED OVERFLOW!] ");
2892 }
2893
Blue Swirl314e2982011-09-11 20:22:05 +00002894 if (mr->alias) {
2895 MemoryRegionList *ml;
2896 bool found = false;
2897
2898 /* check if the alias is already in the queue */
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002899 QTAILQ_FOREACH(ml, alias_print_queue, mrqueue) {
Paolo Bonzinif54bb152013-12-11 12:51:46 +01002900 if (ml->mr == mr->alias) {
Blue Swirl314e2982011-09-11 20:22:05 +00002901 found = true;
2902 }
2903 }
2904
2905 if (!found) {
2906 ml = g_new(MemoryRegionList, 1);
2907 ml->mr = mr->alias;
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002908 QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue);
Blue Swirl314e2982011-09-11 20:22:05 +00002909 }
Jan Kiszka4896d742012-02-04 16:25:42 +01002910 mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
Peter Xu4e831902017-01-16 16:40:04 +08002911 " (prio %d, %s): alias %s @%s " TARGET_FMT_plx
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002912 "-" TARGET_FMT_plx "%s\n",
Peter Xub31f8412017-03-14 20:56:27 +08002913 cur_start, cur_end,
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002914 mr->priority,
Peter Xu4e831902017-01-16 16:40:04 +08002915 memory_region_type((MemoryRegion *)mr),
Peter Crosthwaite3fb18b42014-08-14 23:55:36 -07002916 memory_region_name(mr),
2917 memory_region_name(mr->alias),
Blue Swirl314e2982011-09-11 20:22:05 +00002918 mr->alias_offset,
Peter Xu4e831902017-01-16 16:40:04 +08002919 mr->alias_offset + MR_SIZE(mr->size),
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002920 mr->enabled ? "" : " [disabled]");
Blue Swirl314e2982011-09-11 20:22:05 +00002921 } else {
Jan Kiszka4896d742012-02-04 16:25:42 +01002922 mon_printf(f,
Peter Xu4e831902017-01-16 16:40:04 +08002923 TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %s): %s%s\n",
Peter Xub31f8412017-03-14 20:56:27 +08002924 cur_start, cur_end,
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002925 mr->priority,
Peter Xu4e831902017-01-16 16:40:04 +08002926 memory_region_type((MemoryRegion *)mr),
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002927 memory_region_name(mr),
2928 mr->enabled ? "" : " [disabled]");
Blue Swirl314e2982011-09-11 20:22:05 +00002929 }
Jan Kiszka9479c572011-09-27 15:00:41 +02002930
2931 QTAILQ_INIT(&submr_print_queue);
2932
Blue Swirl314e2982011-09-11 20:22:05 +00002933 QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002934 new_ml = g_new(MemoryRegionList, 1);
2935 new_ml->mr = submr;
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002936 QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002937 if (new_ml->mr->addr < ml->mr->addr ||
2938 (new_ml->mr->addr == ml->mr->addr &&
2939 new_ml->mr->priority > ml->mr->priority)) {
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002940 QTAILQ_INSERT_BEFORE(ml, new_ml, mrqueue);
Jan Kiszka9479c572011-09-27 15:00:41 +02002941 new_ml = NULL;
2942 break;
2943 }
2944 }
2945 if (new_ml) {
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002946 QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, mrqueue);
Jan Kiszka9479c572011-09-27 15:00:41 +02002947 }
2948 }
2949
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002950 QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
Peter Xub31f8412017-03-14 20:56:27 +08002951 mtree_print_mr(mon_printf, f, ml->mr, level + 1, cur_start,
Jan Kiszka9479c572011-09-27 15:00:41 +02002952 alias_print_queue);
2953 }
2954
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02002955 QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, mrqueue, next_ml) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002956 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002957 }
2958}
2959
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10002960struct FlatViewInfo {
2961 fprintf_function mon_printf;
2962 void *f;
2963 int counter;
2964 bool dispatch_tree;
2965};
2966
2967static void mtree_print_flatview(gpointer key, gpointer value,
2968 gpointer user_data)
Peter Xu57bb40c2017-01-16 16:40:05 +08002969{
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10002970 FlatView *view = key;
2971 GArray *fv_address_spaces = value;
2972 struct FlatViewInfo *fvi = user_data;
2973 fprintf_function p = fvi->mon_printf;
2974 void *f = fvi->f;
Peter Xu57bb40c2017-01-16 16:40:05 +08002975 FlatRange *range = &view->ranges[0];
2976 MemoryRegion *mr;
2977 int n = view->nr;
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10002978 int i;
2979 AddressSpace *as;
2980
2981 p(f, "FlatView #%d\n", fvi->counter);
2982 ++fvi->counter;
2983
2984 for (i = 0; i < fv_address_spaces->len; ++i) {
2985 as = g_array_index(fv_address_spaces, AddressSpace*, i);
2986 p(f, " AS \"%s\", root: %s", as->name, memory_region_name(as->root));
2987 if (as->root->alias) {
2988 p(f, ", alias %s", memory_region_name(as->root->alias));
2989 }
2990 p(f, "\n");
2991 }
2992
2993 p(f, " Root memory region: %s\n",
2994 view->root ? memory_region_name(view->root) : "(none)");
Peter Xu57bb40c2017-01-16 16:40:05 +08002995
2996 if (n <= 0) {
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10002997 p(f, MTREE_INDENT "No rendered FlatView\n\n");
Peter Xu57bb40c2017-01-16 16:40:05 +08002998 return;
2999 }
3000
3001 while (n--) {
3002 mr = range->mr;
Paolo Bonzini377a07a2017-03-02 22:49:41 +01003003 if (range->offset_in_region) {
3004 p(f, MTREE_INDENT TARGET_FMT_plx "-"
3005 TARGET_FMT_plx " (prio %d, %s): %s @" TARGET_FMT_plx "\n",
3006 int128_get64(range->addr.start),
3007 int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
3008 mr->priority,
3009 range->readonly ? "rom" : memory_region_type(mr),
3010 memory_region_name(mr),
3011 range->offset_in_region);
3012 } else {
3013 p(f, MTREE_INDENT TARGET_FMT_plx "-"
3014 TARGET_FMT_plx " (prio %d, %s): %s\n",
3015 int128_get64(range->addr.start),
3016 int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
3017 mr->priority,
3018 range->readonly ? "rom" : memory_region_type(mr),
3019 memory_region_name(mr));
3020 }
Peter Xu57bb40c2017-01-16 16:40:05 +08003021 range++;
3022 }
3023
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10003024#if !defined(CONFIG_USER_ONLY)
3025 if (fvi->dispatch_tree && view->root) {
3026 mtree_print_dispatch(p, f, view->dispatch, view->root);
3027 }
3028#endif
3029
3030 p(f, "\n");
Peter Xu57bb40c2017-01-16 16:40:05 +08003031}
3032
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10003033static gboolean mtree_info_flatview_free(gpointer key, gpointer value,
3034 gpointer user_data)
3035{
3036 FlatView *view = key;
3037 GArray *fv_address_spaces = value;
3038
3039 g_array_unref(fv_address_spaces);
3040 flatview_unref(view);
3041
3042 return true;
3043}
3044
3045void mtree_info(fprintf_function mon_printf, void *f, bool flatview,
3046 bool dispatch_tree)
Blue Swirl314e2982011-09-11 20:22:05 +00003047{
3048 MemoryRegionListHead ml_head;
3049 MemoryRegionList *ml, *ml2;
Avi Kivity0d673e32012-10-02 15:28:50 +02003050 AddressSpace *as;
Blue Swirl314e2982011-09-11 20:22:05 +00003051
Peter Xu57bb40c2017-01-16 16:40:05 +08003052 if (flatview) {
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10003053 FlatView *view;
3054 struct FlatViewInfo fvi = {
3055 .mon_printf = mon_printf,
3056 .f = f,
3057 .counter = 0,
3058 .dispatch_tree = dispatch_tree
3059 };
3060 GArray *fv_address_spaces;
3061 GHashTable *views = g_hash_table_new(g_direct_hash, g_direct_equal);
3062
3063 /* Gather all FVs in one table */
Peter Xu57bb40c2017-01-16 16:40:05 +08003064 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10003065 view = address_space_get_flatview(as);
3066
3067 fv_address_spaces = g_hash_table_lookup(views, view);
3068 if (!fv_address_spaces) {
3069 fv_address_spaces = g_array_new(false, false, sizeof(as));
3070 g_hash_table_insert(views, view, fv_address_spaces);
3071 }
3072
3073 g_array_append_val(fv_address_spaces, as);
Peter Xu57bb40c2017-01-16 16:40:05 +08003074 }
Alexey Kardashevskiy5e8fd942017-09-21 18:51:06 +10003075
3076 /* Print */
3077 g_hash_table_foreach(views, mtree_print_flatview, &fvi);
3078
3079 /* Free */
3080 g_hash_table_foreach_remove(views, mtree_info_flatview_free, 0);
3081 g_hash_table_unref(views);
3082
Peter Xu57bb40c2017-01-16 16:40:05 +08003083 return;
3084 }
3085
Blue Swirl314e2982011-09-11 20:22:05 +00003086 QTAILQ_INIT(&ml_head);
3087
Avi Kivity0d673e32012-10-02 15:28:50 +02003088 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Gerd Hoffmanne48816a2015-04-08 12:53:47 +02003089 mon_printf(f, "address-space: %s\n", as->name);
3090 mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head);
3091 mon_printf(f, "\n");
Blue Swirlb9f9be82012-03-10 16:58:35 +00003092 }
3093
Blue Swirl314e2982011-09-11 20:22:05 +00003094 /* print aliased regions */
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02003095 QTAILQ_FOREACH(ml, &ml_head, mrqueue) {
Gerd Hoffmanne48816a2015-04-08 12:53:47 +02003096 mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr));
3097 mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head);
3098 mon_printf(f, "\n");
Blue Swirl314e2982011-09-11 20:22:05 +00003099 }
3100
Kamil Rytarowskia16878d2017-09-03 18:33:04 +02003101 QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) {
Avi Kivity88365e42011-11-13 12:00:55 +02003102 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00003103 }
Blue Swirl314e2982011-09-11 20:22:05 +00003104}
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07003105
Peter Maydellb08199c2017-07-07 15:42:51 +01003106void memory_region_init_ram(MemoryRegion *mr,
3107 struct Object *owner,
3108 const char *name,
3109 uint64_t size,
3110 Error **errp)
3111{
3112 DeviceState *owner_dev;
3113 Error *err = NULL;
3114
3115 memory_region_init_ram_nomigrate(mr, owner, name, size, &err);
3116 if (err) {
3117 error_propagate(errp, err);
3118 return;
3119 }
3120 /* This will assert if owner is neither NULL nor a DeviceState.
3121 * We only want the owner here for the purposes of defining a
3122 * unique name for migration. TODO: Ideally we should implement
3123 * a naming scheme for Objects which are not DeviceStates, in
3124 * which case we can relax this restriction.
3125 */
3126 owner_dev = DEVICE(owner);
3127 vmstate_register_ram(mr, owner_dev);
3128}
3129
3130void memory_region_init_rom(MemoryRegion *mr,
3131 struct Object *owner,
3132 const char *name,
3133 uint64_t size,
3134 Error **errp)
3135{
3136 DeviceState *owner_dev;
3137 Error *err = NULL;
3138
3139 memory_region_init_rom_nomigrate(mr, owner, name, size, &err);
3140 if (err) {
3141 error_propagate(errp, err);
3142 return;
3143 }
3144 /* This will assert if owner is neither NULL nor a DeviceState.
3145 * We only want the owner here for the purposes of defining a
3146 * unique name for migration. TODO: Ideally we should implement
3147 * a naming scheme for Objects which are not DeviceStates, in
3148 * which case we can relax this restriction.
3149 */
3150 owner_dev = DEVICE(owner);
3151 vmstate_register_ram(mr, owner_dev);
3152}
3153
3154void memory_region_init_rom_device(MemoryRegion *mr,
3155 struct Object *owner,
3156 const MemoryRegionOps *ops,
3157 void *opaque,
3158 const char *name,
3159 uint64_t size,
3160 Error **errp)
3161{
3162 DeviceState *owner_dev;
3163 Error *err = NULL;
3164
3165 memory_region_init_rom_device_nomigrate(mr, owner, ops, opaque,
3166 name, size, &err);
3167 if (err) {
3168 error_propagate(errp, err);
3169 return;
3170 }
3171 /* This will assert if owner is neither NULL nor a DeviceState.
3172 * We only want the owner here for the purposes of defining a
3173 * unique name for migration. TODO: Ideally we should implement
3174 * a naming scheme for Objects which are not DeviceStates, in
3175 * which case we can relax this restriction.
3176 */
3177 owner_dev = DEVICE(owner);
3178 vmstate_register_ram(mr, owner_dev);
3179}
3180
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07003181static const TypeInfo memory_region_info = {
3182 .parent = TYPE_OBJECT,
3183 .name = TYPE_MEMORY_REGION,
3184 .instance_size = sizeof(MemoryRegion),
3185 .instance_init = memory_region_initfn,
3186 .instance_finalize = memory_region_finalize,
3187};
3188
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10003189static const TypeInfo iommu_memory_region_info = {
3190 .parent = TYPE_MEMORY_REGION,
3191 .name = TYPE_IOMMU_MEMORY_REGION,
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10003192 .class_size = sizeof(IOMMUMemoryRegionClass),
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10003193 .instance_size = sizeof(IOMMUMemoryRegion),
3194 .instance_init = iommu_memory_region_initfn,
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +10003195 .abstract = true,
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10003196};
3197
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07003198static void memory_register_types(void)
3199{
3200 type_register_static(&memory_region_info);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +10003201 type_register_static(&iommu_memory_region_info);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07003202}
3203
3204type_init(memory_register_types)