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Avi Kivity093bc2c2011-07-26 14:26:01 +03001/*
2 * Physical memory management
3 *
4 * Copyright 2011 Red Hat, Inc. and/or its affiliates
5 *
6 * Authors:
7 * Avi Kivity <avi@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
Paolo Bonzini6b620ca2012-01-13 17:44:23 +010012 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
Avi Kivity093bc2c2011-07-26 14:26:01 +030014 */
15
Paolo Bonzini022c62c2012-12-17 18:19:49 +010016#include "exec/memory.h"
17#include "exec/address-spaces.h"
18#include "exec/ioport.h"
Peter Crosthwaite409ddd02014-06-05 23:16:27 -070019#include "qapi/visitor.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010020#include "qemu/bitops.h"
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -040021#include "qom/object.h"
Paolo Bonzini55d5d042013-07-28 14:57:22 +020022#include "trace.h"
Avi Kivity093bc2c2011-07-26 14:26:01 +030023#include <assert.h>
24
Paolo Bonzini022c62c2012-12-17 18:19:49 +010025#include "exec/memory-internal.h"
Juan Quintela220c3eb2013-10-14 17:13:59 +020026#include "exec/ram_addr.h"
Paolo Bonzinie1c57ab2014-05-14 17:43:18 +080027#include "sysemu/sysemu.h"
Avi Kivity67d95c12011-12-15 15:25:22 +020028
Paolo Bonzinid1970632013-05-24 13:23:38 +020029//#define DEBUG_UNASSIGNED
30
Paolo Bonziniec05ec22015-03-29 09:31:43 +020031#define RAM_ADDR_INVALID (~(ram_addr_t)0)
32
Jan Kiszka22bde712012-11-05 16:45:56 +010033static unsigned memory_region_transaction_depth;
34static bool memory_region_update_pending;
Gonglei4dc56152014-05-08 11:47:32 +080035static bool ioeventfd_update_pending;
Avi Kivity7664e802011-12-11 14:47:25 +020036static bool global_dirty_log = false;
37
Avi Kivity72e22d22012-02-08 15:05:50 +020038static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
39 = QTAILQ_HEAD_INITIALIZER(memory_listeners);
Avi Kivity4ef4db82011-07-26 14:26:13 +030040
Avi Kivity0d673e32012-10-02 15:28:50 +020041static QTAILQ_HEAD(, AddressSpace) address_spaces
42 = QTAILQ_HEAD_INITIALIZER(address_spaces);
43
Avi Kivity093bc2c2011-07-26 14:26:01 +030044typedef struct AddrRange AddrRange;
45
Avi Kivity8417ceb2011-08-03 11:56:14 +030046/*
Fam Zhengc9cdaa32014-08-11 10:18:31 +080047 * Note that signed integers are needed for negative offsetting in aliases
Avi Kivity8417ceb2011-08-03 11:56:14 +030048 * (large MemoryRegion::alias_offset).
49 */
Avi Kivity093bc2c2011-07-26 14:26:01 +030050struct AddrRange {
Avi Kivity08dafab2011-10-16 13:19:17 +020051 Int128 start;
52 Int128 size;
Avi Kivity093bc2c2011-07-26 14:26:01 +030053};
54
Avi Kivity08dafab2011-10-16 13:19:17 +020055static AddrRange addrrange_make(Int128 start, Int128 size)
Avi Kivity093bc2c2011-07-26 14:26:01 +030056{
57 return (AddrRange) { start, size };
58}
59
60static bool addrrange_equal(AddrRange r1, AddrRange r2)
61{
Avi Kivity08dafab2011-10-16 13:19:17 +020062 return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030063}
64
Avi Kivity08dafab2011-10-16 13:19:17 +020065static Int128 addrrange_end(AddrRange r)
Avi Kivity093bc2c2011-07-26 14:26:01 +030066{
Avi Kivity08dafab2011-10-16 13:19:17 +020067 return int128_add(r.start, r.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030068}
69
Avi Kivity08dafab2011-10-16 13:19:17 +020070static AddrRange addrrange_shift(AddrRange range, Int128 delta)
Avi Kivity093bc2c2011-07-26 14:26:01 +030071{
Avi Kivity08dafab2011-10-16 13:19:17 +020072 int128_addto(&range.start, delta);
Avi Kivity093bc2c2011-07-26 14:26:01 +030073 return range;
74}
75
Avi Kivity08dafab2011-10-16 13:19:17 +020076static bool addrrange_contains(AddrRange range, Int128 addr)
77{
78 return int128_ge(addr, range.start)
79 && int128_lt(addr, addrrange_end(range));
80}
81
Avi Kivity093bc2c2011-07-26 14:26:01 +030082static bool addrrange_intersects(AddrRange r1, AddrRange r2)
83{
Avi Kivity08dafab2011-10-16 13:19:17 +020084 return addrrange_contains(r1, r2.start)
85 || addrrange_contains(r2, r1.start);
Avi Kivity093bc2c2011-07-26 14:26:01 +030086}
87
88static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
89{
Avi Kivity08dafab2011-10-16 13:19:17 +020090 Int128 start = int128_max(r1.start, r2.start);
91 Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
92 return addrrange_make(start, int128_sub(end, start));
Avi Kivity093bc2c2011-07-26 14:26:01 +030093}
94
Avi Kivity0e0d36b2012-02-08 16:39:45 +020095enum ListenerDirection { Forward, Reverse };
96
Avi Kivity7376e582012-02-08 21:05:17 +020097static bool memory_listener_match(MemoryListener *listener,
98 MemoryRegionSection *section)
99{
100 return !listener->address_space_filter
101 || listener->address_space_filter == section->address_space;
102}
103
104#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200105 do { \
106 MemoryListener *_listener; \
107 \
108 switch (_direction) { \
109 case Forward: \
110 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200111 if (_listener->_callback) { \
112 _listener->_callback(_listener, ##_args); \
113 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200114 } \
115 break; \
116 case Reverse: \
117 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
118 memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200119 if (_listener->_callback) { \
120 _listener->_callback(_listener, ##_args); \
121 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200122 } \
123 break; \
124 default: \
125 abort(); \
126 } \
127 } while (0)
128
Avi Kivity7376e582012-02-08 21:05:17 +0200129#define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \
130 do { \
131 MemoryListener *_listener; \
132 \
133 switch (_direction) { \
134 case Forward: \
135 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200136 if (_listener->_callback \
137 && memory_listener_match(_listener, _section)) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200138 _listener->_callback(_listener, _section, ##_args); \
139 } \
140 } \
141 break; \
142 case Reverse: \
143 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
144 memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200145 if (_listener->_callback \
146 && memory_listener_match(_listener, _section)) { \
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...) \
Avi Kivity7376e582012-02-08 21:05:17 +0200158 MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200159 .mr = (fr)->mr, \
Avi Kivityf6790af2012-10-02 20:13:51 +0200160 .address_space = (as), \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200161 .offset_within_region = (fr)->offset_in_region, \
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200162 .size = (fr)->addr.size, \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200163 .offset_within_address_space = int128_get64((fr)->addr.start), \
Avi Kivity7a8499e2012-02-08 17:01:23 +0200164 .readonly = (fr)->readonly, \
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200165 }), ##_args)
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200166
Avi Kivity093bc2c2011-07-26 14:26:01 +0300167struct CoalescedMemoryRange {
168 AddrRange addr;
169 QTAILQ_ENTRY(CoalescedMemoryRange) link;
170};
171
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300172struct MemoryRegionIoeventfd {
173 AddrRange addr;
174 bool match_data;
175 uint64_t data;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200176 EventNotifier *e;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300177};
178
179static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
180 MemoryRegionIoeventfd b)
181{
Avi Kivity08dafab2011-10-16 13:19:17 +0200182 if (int128_lt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300183 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200184 } else if (int128_gt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300185 return false;
Avi Kivity08dafab2011-10-16 13:19:17 +0200186 } else if (int128_lt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300187 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200188 } else if (int128_gt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300189 return false;
190 } else if (a.match_data < b.match_data) {
191 return true;
192 } else if (a.match_data > b.match_data) {
193 return false;
194 } else if (a.match_data) {
195 if (a.data < b.data) {
196 return true;
197 } else if (a.data > b.data) {
198 return false;
199 }
200 }
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200201 if (a.e < b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300202 return true;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200203 } else if (a.e > b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300204 return false;
205 }
206 return false;
207}
208
209static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a,
210 MemoryRegionIoeventfd b)
211{
212 return !memory_region_ioeventfd_before(a, b)
213 && !memory_region_ioeventfd_before(b, a);
214}
215
Avi Kivity093bc2c2011-07-26 14:26:01 +0300216typedef struct FlatRange FlatRange;
217typedef struct FlatView FlatView;
218
219/* Range of memory in the global map. Addresses are absolute. */
220struct FlatRange {
221 MemoryRegion *mr;
Avi Kivitya8170e52012-10-23 12:30:10 +0200222 hwaddr offset_in_region;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300223 AddrRange addr;
Avi Kivity5a583342011-07-26 14:26:02 +0300224 uint8_t dirty_log_mask;
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +0200225 bool romd_mode;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300226 bool readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300227};
228
229/* Flattened global view of current active memory hierarchy. Kept in sorted
230 * order.
231 */
232struct FlatView {
Paolo Bonzini374f2982013-05-17 12:37:03 +0200233 struct rcu_head rcu;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200234 unsigned ref;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300235 FlatRange *ranges;
236 unsigned nr;
237 unsigned nr_allocated;
238};
239
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300240typedef struct AddressSpaceOps AddressSpaceOps;
241
Avi Kivity093bc2c2011-07-26 14:26:01 +0300242#define FOR_EACH_FLAT_RANGE(var, view) \
243 for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
244
Avi Kivity093bc2c2011-07-26 14:26:01 +0300245static bool flatrange_equal(FlatRange *a, FlatRange *b)
246{
247 return a->mr == b->mr
248 && addrrange_equal(a->addr, b->addr)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300249 && a->offset_in_region == b->offset_in_region
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +0200250 && a->romd_mode == b->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300251 && a->readonly == b->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300252}
253
254static void flatview_init(FlatView *view)
255{
Paolo Bonzini856d7242013-05-06 11:57:21 +0200256 view->ref = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300257 view->ranges = NULL;
258 view->nr = 0;
259 view->nr_allocated = 0;
260}
261
262/* Insert a range into a given position. Caller is responsible for maintaining
263 * sorting order.
264 */
265static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
266{
267 if (view->nr == view->nr_allocated) {
268 view->nr_allocated = MAX(2 * view->nr, 10);
Anthony Liguori7267c092011-08-20 22:09:37 -0500269 view->ranges = g_realloc(view->ranges,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300270 view->nr_allocated * sizeof(*view->ranges));
271 }
272 memmove(view->ranges + pos + 1, view->ranges + pos,
273 (view->nr - pos) * sizeof(FlatRange));
274 view->ranges[pos] = *range;
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200275 memory_region_ref(range->mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300276 ++view->nr;
277}
278
279static void flatview_destroy(FlatView *view)
280{
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200281 int i;
282
283 for (i = 0; i < view->nr; i++) {
284 memory_region_unref(view->ranges[i].mr);
285 }
Anthony Liguori7267c092011-08-20 22:09:37 -0500286 g_free(view->ranges);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200287 g_free(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300288}
289
Paolo Bonzini856d7242013-05-06 11:57:21 +0200290static void flatview_ref(FlatView *view)
291{
292 atomic_inc(&view->ref);
293}
294
295static void flatview_unref(FlatView *view)
296{
297 if (atomic_fetch_dec(&view->ref) == 1) {
298 flatview_destroy(view);
299 }
300}
301
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300302static bool can_merge(FlatRange *r1, FlatRange *r2)
303{
Avi Kivity08dafab2011-10-16 13:19:17 +0200304 return int128_eq(addrrange_end(r1->addr), r2->addr.start)
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300305 && r1->mr == r2->mr
Avi Kivity08dafab2011-10-16 13:19:17 +0200306 && int128_eq(int128_add(int128_make64(r1->offset_in_region),
307 r1->addr.size),
308 int128_make64(r2->offset_in_region))
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300309 && r1->dirty_log_mask == r2->dirty_log_mask
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +0200310 && r1->romd_mode == r2->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300311 && r1->readonly == r2->readonly;
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300312}
313
Peter Crosthwaite8508e022013-06-03 15:31:56 +1000314/* Attempt to simplify a view by merging adjacent ranges */
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300315static void flatview_simplify(FlatView *view)
316{
317 unsigned i, j;
318
319 i = 0;
320 while (i < view->nr) {
321 j = i + 1;
322 while (j < view->nr
323 && can_merge(&view->ranges[j-1], &view->ranges[j])) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200324 int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300325 ++j;
326 }
327 ++i;
328 memmove(&view->ranges[i], &view->ranges[j],
329 (view->nr - j) * sizeof(view->ranges[j]));
330 view->nr -= j - i;
331 }
332}
333
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200334static bool memory_region_big_endian(MemoryRegion *mr)
335{
336#ifdef TARGET_WORDS_BIGENDIAN
337 return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
338#else
339 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
340#endif
341}
342
Paolo Bonzinie11ef3d2013-07-22 15:54:35 +0200343static bool memory_region_wrong_endianness(MemoryRegion *mr)
344{
345#ifdef TARGET_WORDS_BIGENDIAN
346 return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
347#else
348 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
349#endif
350}
351
352static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
353{
354 if (memory_region_wrong_endianness(mr)) {
355 switch (size) {
356 case 1:
357 break;
358 case 2:
359 *data = bswap16(*data);
360 break;
361 case 4:
362 *data = bswap32(*data);
363 break;
364 case 8:
365 *data = bswap64(*data);
366 break;
367 default:
368 abort();
369 }
370 }
371}
372
Peter Maydellcc05c432015-04-26 16:49:23 +0100373static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
374 hwaddr addr,
375 uint64_t *value,
376 unsigned size,
377 unsigned shift,
378 uint64_t mask,
379 MemTxAttrs attrs)
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200380{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200381 uint64_t tmp;
382
383 tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200384 trace_memory_region_ops_read(mr, addr, tmp, size);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200385 *value |= (tmp & mask) << shift;
Peter Maydellcc05c432015-04-26 16:49:23 +0100386 return MEMTX_OK;
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200387}
388
Peter Maydellcc05c432015-04-26 16:49:23 +0100389static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
390 hwaddr addr,
391 uint64_t *value,
392 unsigned size,
393 unsigned shift,
394 uint64_t mask,
395 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300396{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300397 uint64_t tmp;
398
Jan Kiszkad4105152012-08-23 13:02:29 +0200399 if (mr->flush_coalesced_mmio) {
400 qemu_flush_coalesced_mmio_buffer();
401 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300402 tmp = mr->ops->read(mr->opaque, addr, size);
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200403 trace_memory_region_ops_read(mr, addr, tmp, size);
Avi Kivity164a4dc2011-08-11 10:40:25 +0300404 *value |= (tmp & mask) << shift;
Peter Maydellcc05c432015-04-26 16:49:23 +0100405 return MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300406}
407
Peter Maydellcc05c432015-04-26 16:49:23 +0100408static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
409 hwaddr addr,
410 uint64_t *value,
411 unsigned size,
412 unsigned shift,
413 uint64_t mask,
414 MemTxAttrs attrs)
415{
416 uint64_t tmp = 0;
417 MemTxResult r;
418
419 if (mr->flush_coalesced_mmio) {
420 qemu_flush_coalesced_mmio_buffer();
421 }
422 r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
423 trace_memory_region_ops_read(mr, addr, tmp, size);
424 *value |= (tmp & mask) << shift;
425 return r;
426}
427
428static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
429 hwaddr addr,
430 uint64_t *value,
431 unsigned size,
432 unsigned shift,
433 uint64_t mask,
434 MemTxAttrs attrs)
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200435{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200436 uint64_t tmp;
437
438 tmp = (*value >> shift) & mask;
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200439 trace_memory_region_ops_write(mr, addr, tmp, size);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200440 mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
Peter Maydellcc05c432015-04-26 16:49:23 +0100441 return MEMTX_OK;
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200442}
443
Peter Maydellcc05c432015-04-26 16:49:23 +0100444static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
445 hwaddr addr,
446 uint64_t *value,
447 unsigned size,
448 unsigned shift,
449 uint64_t mask,
450 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300451{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300452 uint64_t tmp;
453
Jan Kiszkad4105152012-08-23 13:02:29 +0200454 if (mr->flush_coalesced_mmio) {
455 qemu_flush_coalesced_mmio_buffer();
456 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300457 tmp = (*value >> shift) & mask;
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200458 trace_memory_region_ops_write(mr, addr, tmp, size);
Avi Kivity164a4dc2011-08-11 10:40:25 +0300459 mr->ops->write(mr->opaque, addr, tmp, size);
Peter Maydellcc05c432015-04-26 16:49:23 +0100460 return MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300461}
462
Peter Maydellcc05c432015-04-26 16:49:23 +0100463static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
464 hwaddr addr,
465 uint64_t *value,
466 unsigned size,
467 unsigned shift,
468 uint64_t mask,
469 MemTxAttrs attrs)
470{
471 uint64_t tmp;
472
473 if (mr->flush_coalesced_mmio) {
474 qemu_flush_coalesced_mmio_buffer();
475 }
476 tmp = (*value >> shift) & mask;
477 trace_memory_region_ops_write(mr, addr, tmp, size);
478 return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
479}
480
481static MemTxResult access_with_adjusted_size(hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300482 uint64_t *value,
483 unsigned size,
484 unsigned access_size_min,
485 unsigned access_size_max,
Peter Maydellcc05c432015-04-26 16:49:23 +0100486 MemTxResult (*access)(MemoryRegion *mr,
487 hwaddr addr,
488 uint64_t *value,
489 unsigned size,
490 unsigned shift,
491 uint64_t mask,
492 MemTxAttrs attrs),
493 MemoryRegion *mr,
494 MemTxAttrs attrs)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300495{
496 uint64_t access_mask;
497 unsigned access_size;
498 unsigned i;
Peter Maydellcc05c432015-04-26 16:49:23 +0100499 MemTxResult r = MEMTX_OK;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300500
501 if (!access_size_min) {
502 access_size_min = 1;
503 }
504 if (!access_size_max) {
505 access_size_max = 4;
506 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200507
508 /* FIXME: support unaligned access? */
Avi Kivity164a4dc2011-08-11 10:40:25 +0300509 access_size = MAX(MIN(size, access_size_max), access_size_min);
510 access_mask = -1ULL >> (64 - access_size * 8);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200511 if (memory_region_big_endian(mr)) {
512 for (i = 0; i < size; i += access_size) {
Peter Maydellcc05c432015-04-26 16:49:23 +0100513 r |= access(mr, addr + i, value, access_size,
514 (size - access_size - i) * 8, access_mask, attrs);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200515 }
516 } else {
517 for (i = 0; i < size; i += access_size) {
Peter Maydellcc05c432015-04-26 16:49:23 +0100518 r |= access(mr, addr + i, value, access_size, i * 8,
519 access_mask, attrs);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200520 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300521 }
Peter Maydellcc05c432015-04-26 16:49:23 +0100522 return r;
Avi Kivity164a4dc2011-08-11 10:40:25 +0300523}
524
Avi Kivitye2177952011-12-08 15:00:18 +0200525static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
526{
Avi Kivity0d673e32012-10-02 15:28:50 +0200527 AddressSpace *as;
528
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +0200529 while (mr->container) {
530 mr = mr->container;
Avi Kivitye2177952011-12-08 15:00:18 +0200531 }
Avi Kivity0d673e32012-10-02 15:28:50 +0200532 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
533 if (mr == as->root) {
534 return as;
535 }
Avi Kivitye2177952011-12-08 15:00:18 +0200536 }
Igor Mammedoveed2bac2014-06-02 15:25:06 +0200537 return NULL;
Avi Kivitye2177952011-12-08 15:00:18 +0200538}
539
Avi Kivity093bc2c2011-07-26 14:26:01 +0300540/* Render a memory region into the global view. Ranges in @view obscure
541 * ranges in @mr.
542 */
543static void render_memory_region(FlatView *view,
544 MemoryRegion *mr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200545 Int128 base,
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300546 AddrRange clip,
547 bool readonly)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300548{
549 MemoryRegion *subregion;
550 unsigned i;
Avi Kivitya8170e52012-10-23 12:30:10 +0200551 hwaddr offset_in_region;
Avi Kivity08dafab2011-10-16 13:19:17 +0200552 Int128 remain;
553 Int128 now;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300554 FlatRange fr;
555 AddrRange tmp;
556
Avi Kivity6bba19b2011-09-14 11:54:58 +0300557 if (!mr->enabled) {
558 return;
559 }
560
Avi Kivity08dafab2011-10-16 13:19:17 +0200561 int128_addto(&base, int128_make64(mr->addr));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300562 readonly |= mr->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300563
564 tmp = addrrange_make(base, mr->size);
565
566 if (!addrrange_intersects(tmp, clip)) {
567 return;
568 }
569
570 clip = addrrange_intersection(tmp, clip);
571
572 if (mr->alias) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200573 int128_subfrom(&base, int128_make64(mr->alias->addr));
574 int128_subfrom(&base, int128_make64(mr->alias_offset));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300575 render_memory_region(view, mr->alias, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300576 return;
577 }
578
579 /* Render subregions in priority order. */
580 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300581 render_memory_region(view, subregion, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300582 }
583
Avi Kivity14a3c102011-07-26 14:26:06 +0300584 if (!mr->terminates) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300585 return;
586 }
587
Avi Kivity08dafab2011-10-16 13:19:17 +0200588 offset_in_region = int128_get64(int128_sub(clip.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300589 base = clip.start;
590 remain = clip.size;
591
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000592 fr.mr = mr;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +0100593 fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000594 fr.romd_mode = mr->romd_mode;
595 fr.readonly = readonly;
596
Avi Kivity093bc2c2011-07-26 14:26:01 +0300597 /* Render the region itself into any gaps left by the current view. */
Avi Kivity08dafab2011-10-16 13:19:17 +0200598 for (i = 0; i < view->nr && int128_nz(remain); ++i) {
599 if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300600 continue;
601 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200602 if (int128_lt(base, view->ranges[i].addr.start)) {
603 now = int128_min(remain,
604 int128_sub(view->ranges[i].addr.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300605 fr.offset_in_region = offset_in_region;
606 fr.addr = addrrange_make(base, now);
607 flatview_insert(view, i, &fr);
608 ++i;
Avi Kivity08dafab2011-10-16 13:19:17 +0200609 int128_addto(&base, now);
610 offset_in_region += int128_get64(now);
611 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300612 }
Avi Kivityd26a8ca2012-10-29 18:22:36 +0200613 now = int128_sub(int128_min(int128_add(base, remain),
614 addrrange_end(view->ranges[i].addr)),
615 base);
616 int128_addto(&base, now);
617 offset_in_region += int128_get64(now);
618 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300619 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200620 if (int128_nz(remain)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300621 fr.offset_in_region = offset_in_region;
622 fr.addr = addrrange_make(base, remain);
623 flatview_insert(view, i, &fr);
624 }
625}
626
627/* Render a memory topology into a list of disjoint absolute ranges. */
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200628static FlatView *generate_memory_topology(MemoryRegion *mr)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300629{
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200630 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300631
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200632 view = g_new(FlatView, 1);
633 flatview_init(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300634
Avi Kivity83f3c252012-10-07 12:59:55 +0200635 if (mr) {
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200636 render_memory_region(view, mr, int128_zero(),
Avi Kivity83f3c252012-10-07 12:59:55 +0200637 addrrange_make(int128_zero(), int128_2_64()), false);
638 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200639 flatview_simplify(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300640
641 return view;
642}
643
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300644static void address_space_add_del_ioeventfds(AddressSpace *as,
645 MemoryRegionIoeventfd *fds_new,
646 unsigned fds_new_nb,
647 MemoryRegionIoeventfd *fds_old,
648 unsigned fds_old_nb)
649{
650 unsigned iold, inew;
Avi Kivity80a1ea32012-02-08 16:39:06 +0200651 MemoryRegionIoeventfd *fd;
652 MemoryRegionSection section;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300653
654 /* Generate a symmetric difference of the old and new fd sets, adding
655 * and deleting as necessary.
656 */
657
658 iold = inew = 0;
659 while (iold < fds_old_nb || inew < fds_new_nb) {
660 if (iold < fds_old_nb
661 && (inew == fds_new_nb
662 || memory_region_ioeventfd_before(fds_old[iold],
663 fds_new[inew]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200664 fd = &fds_old[iold];
665 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +0200666 .address_space = as,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200667 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200668 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200669 };
670 MEMORY_LISTENER_CALL(eventfd_del, Forward, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200671 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300672 ++iold;
673 } else if (inew < fds_new_nb
674 && (iold == fds_old_nb
675 || memory_region_ioeventfd_before(fds_new[inew],
676 fds_old[iold]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200677 fd = &fds_new[inew];
678 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +0200679 .address_space = as,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200680 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200681 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200682 };
683 MEMORY_LISTENER_CALL(eventfd_add, Reverse, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200684 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300685 ++inew;
686 } else {
687 ++iold;
688 ++inew;
689 }
690 }
691}
692
Paolo Bonzini856d7242013-05-06 11:57:21 +0200693static FlatView *address_space_get_flatview(AddressSpace *as)
694{
695 FlatView *view;
696
Paolo Bonzini374f2982013-05-17 12:37:03 +0200697 rcu_read_lock();
698 view = atomic_rcu_read(&as->current_map);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200699 flatview_ref(view);
Paolo Bonzini374f2982013-05-17 12:37:03 +0200700 rcu_read_unlock();
Paolo Bonzini856d7242013-05-06 11:57:21 +0200701 return view;
702}
703
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300704static void address_space_update_ioeventfds(AddressSpace *as)
705{
Paolo Bonzini99e86342013-05-06 10:26:13 +0200706 FlatView *view;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300707 FlatRange *fr;
708 unsigned ioeventfd_nb = 0;
709 MemoryRegionIoeventfd *ioeventfds = NULL;
710 AddrRange tmp;
711 unsigned i;
712
Paolo Bonzini856d7242013-05-06 11:57:21 +0200713 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +0200714 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300715 for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
716 tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200717 int128_sub(fr->addr.start,
718 int128_make64(fr->offset_in_region)));
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300719 if (addrrange_intersects(fr->addr, tmp)) {
720 ++ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -0500721 ioeventfds = g_realloc(ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300722 ioeventfd_nb * sizeof(*ioeventfds));
723 ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
724 ioeventfds[ioeventfd_nb-1].addr = tmp;
725 }
726 }
727 }
728
729 address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
730 as->ioeventfds, as->ioeventfd_nb);
731
Anthony Liguori7267c092011-08-20 22:09:37 -0500732 g_free(as->ioeventfds);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300733 as->ioeventfds = ioeventfds;
734 as->ioeventfd_nb = ioeventfd_nb;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200735 flatview_unref(view);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300736}
737
Avi Kivityb8af1af2011-07-26 14:26:12 +0300738static void address_space_update_topology_pass(AddressSpace *as,
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200739 const FlatView *old_view,
740 const FlatView *new_view,
Avi Kivityb8af1af2011-07-26 14:26:12 +0300741 bool adding)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300742{
Avi Kivity093bc2c2011-07-26 14:26:01 +0300743 unsigned iold, inew;
744 FlatRange *frold, *frnew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300745
746 /* Generate a symmetric difference of the old and new memory maps.
747 * Kill ranges in the old map, and instantiate ranges in the new map.
748 */
749 iold = inew = 0;
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200750 while (iold < old_view->nr || inew < new_view->nr) {
751 if (iold < old_view->nr) {
752 frold = &old_view->ranges[iold];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300753 } else {
754 frold = NULL;
755 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200756 if (inew < new_view->nr) {
757 frnew = &new_view->ranges[inew];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300758 } else {
759 frnew = NULL;
760 }
761
762 if (frold
763 && (!frnew
Avi Kivity08dafab2011-10-16 13:19:17 +0200764 || int128_lt(frold->addr.start, frnew->addr.start)
765 || (int128_eq(frold->addr.start, frnew->addr.start)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300766 && !flatrange_equal(frold, frnew)))) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000767 /* In old but not in new, or in both but attributes changed. */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300768
Avi Kivityb8af1af2011-07-26 14:26:12 +0300769 if (!adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200770 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300771 }
772
Avi Kivity093bc2c2011-07-26 14:26:01 +0300773 ++iold;
774 } else if (frold && frnew && flatrange_equal(frold, frnew)) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000775 /* In both and unchanged (except logging may have changed) */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300776
Avi Kivityb8af1af2011-07-26 14:26:12 +0300777 if (adding) {
Avi Kivity50c1e142012-02-08 21:36:02 +0200778 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200779 if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
780 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
781 frold->dirty_log_mask,
782 frnew->dirty_log_mask);
783 }
784 if (frold->dirty_log_mask & ~frnew->dirty_log_mask) {
785 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop,
786 frold->dirty_log_mask,
787 frnew->dirty_log_mask);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300788 }
Avi Kivity5a583342011-07-26 14:26:02 +0300789 }
790
Avi Kivity093bc2c2011-07-26 14:26:01 +0300791 ++iold;
792 ++inew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300793 } else {
794 /* In new */
795
Avi Kivityb8af1af2011-07-26 14:26:12 +0300796 if (adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200797 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300798 }
799
Avi Kivity093bc2c2011-07-26 14:26:01 +0300800 ++inew;
801 }
802 }
Avi Kivityb8af1af2011-07-26 14:26:12 +0300803}
804
805
806static void address_space_update_topology(AddressSpace *as)
807{
Paolo Bonzini856d7242013-05-06 11:57:21 +0200808 FlatView *old_view = address_space_get_flatview(as);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200809 FlatView *new_view = generate_memory_topology(as->root);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300810
811 address_space_update_topology_pass(as, old_view, new_view, false);
812 address_space_update_topology_pass(as, old_view, new_view, true);
813
Paolo Bonzini374f2982013-05-17 12:37:03 +0200814 /* Writes are protected by the BQL. */
815 atomic_rcu_set(&as->current_map, new_view);
816 call_rcu(old_view, flatview_unref, rcu);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200817
818 /* Note that all the old MemoryRegions are still alive up to this
819 * point. This relieves most MemoryListeners from the need to
820 * ref/unref the MemoryRegions they get---unless they use them
821 * outside the iothread mutex, in which case precise reference
822 * counting is necessary.
823 */
824 flatview_unref(old_view);
825
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300826 address_space_update_ioeventfds(as);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300827}
828
Avi Kivity4ef4db82011-07-26 14:26:13 +0300829void memory_region_transaction_begin(void)
830{
Jan Kiszkabb880de2012-08-23 13:02:32 +0200831 qemu_flush_coalesced_mmio_buffer();
Avi Kivity4ef4db82011-07-26 14:26:13 +0300832 ++memory_region_transaction_depth;
833}
834
Gonglei4dc56152014-05-08 11:47:32 +0800835static void memory_region_clear_pending(void)
836{
837 memory_region_update_pending = false;
838 ioeventfd_update_pending = false;
839}
840
Avi Kivity4ef4db82011-07-26 14:26:13 +0300841void memory_region_transaction_commit(void)
842{
Avi Kivity0d673e32012-10-02 15:28:50 +0200843 AddressSpace *as;
844
Avi Kivity4ef4db82011-07-26 14:26:13 +0300845 assert(memory_region_transaction_depth);
846 --memory_region_transaction_depth;
Gonglei4dc56152014-05-08 11:47:32 +0800847 if (!memory_region_transaction_depth) {
848 if (memory_region_update_pending) {
849 MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
Jan Kiszka02e2b952012-08-23 13:02:31 +0200850
Gonglei4dc56152014-05-08 11:47:32 +0800851 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
852 address_space_update_topology(as);
853 }
854
855 MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
856 } else if (ioeventfd_update_pending) {
857 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
858 address_space_update_ioeventfds(as);
859 }
Jan Kiszka02e2b952012-08-23 13:02:31 +0200860 }
Gonglei4dc56152014-05-08 11:47:32 +0800861 memory_region_clear_pending();
862 }
Avi Kivity4ef4db82011-07-26 14:26:13 +0300863}
864
Avi Kivity545e92e2011-08-08 19:58:48 +0300865static void memory_region_destructor_none(MemoryRegion *mr)
866{
867}
868
869static void memory_region_destructor_ram(MemoryRegion *mr)
870{
871 qemu_ram_free(mr->ram_addr);
872}
873
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200874static void memory_region_destructor_alias(MemoryRegion *mr)
875{
876 memory_region_unref(mr->alias);
877}
878
Avi Kivity545e92e2011-08-08 19:58:48 +0300879static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
880{
881 qemu_ram_free_from_ptr(mr->ram_addr);
882}
883
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300884static void memory_region_destructor_rom_device(MemoryRegion *mr)
885{
886 qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300887}
888
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700889static bool memory_region_need_escape(char c)
890{
891 return c == '/' || c == '[' || c == '\\' || c == ']';
892}
893
894static char *memory_region_escape_name(const char *name)
895{
896 const char *p;
897 char *escaped, *q;
898 uint8_t c;
899 size_t bytes = 0;
900
901 for (p = name; *p; p++) {
902 bytes += memory_region_need_escape(*p) ? 4 : 1;
903 }
904 if (bytes == p - name) {
905 return g_memdup(name, bytes + 1);
906 }
907
908 escaped = g_malloc(bytes + 1);
909 for (p = name, q = escaped; *p; p++) {
910 c = *p;
911 if (unlikely(memory_region_need_escape(c))) {
912 *q++ = '\\';
913 *q++ = 'x';
914 *q++ = "0123456789abcdef"[c >> 4];
915 c = "0123456789abcdef"[c & 15];
916 }
917 *q++ = c;
918 }
919 *q = 0;
920 return escaped;
921}
922
Avi Kivity093bc2c2011-07-26 14:26:01 +0300923void memory_region_init(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400924 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300925 const char *name,
926 uint64_t size)
927{
Paolo Bonzini22a893e2014-06-11 10:58:06 +0200928 if (!owner) {
Andreas Färber210eb932015-03-12 15:37:07 +0100929 owner = container_get(qdev_get_machine(), "/unattached");
Paolo Bonzini22a893e2014-06-11 10:58:06 +0200930 }
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700931
Paolo Bonzini22a893e2014-06-11 10:58:06 +0200932 object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
Avi Kivity08dafab2011-10-16 13:19:17 +0200933 mr->size = int128_make64(size);
934 if (size == UINT64_MAX) {
935 mr->size = int128_2_64();
936 }
Peter Maydell302fa282014-08-19 20:05:46 +0100937 mr->name = g_strdup(name);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700938
939 if (name) {
Peter Crosthwaite843ef732014-08-19 23:56:26 -0700940 char *escaped_name = memory_region_escape_name(name);
941 char *name_array = g_strdup_printf("%s[*]", escaped_name);
942 object_property_add_child(owner, name_array, OBJECT(mr), &error_abort);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700943 object_unref(OBJECT(mr));
Peter Crosthwaite843ef732014-08-19 23:56:26 -0700944 g_free(name_array);
945 g_free(escaped_name);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700946 }
947}
948
Peter Crosthwaite409ddd02014-06-05 23:16:27 -0700949static void memory_region_get_addr(Object *obj, Visitor *v, void *opaque,
950 const char *name, Error **errp)
951{
952 MemoryRegion *mr = MEMORY_REGION(obj);
953 uint64_t value = mr->addr;
954
955 visit_type_uint64(v, &value, name, errp);
956}
957
958static void memory_region_get_container(Object *obj, Visitor *v, void *opaque,
959 const char *name, Error **errp)
960{
961 MemoryRegion *mr = MEMORY_REGION(obj);
962 gchar *path = (gchar *)"";
963
964 if (mr->container) {
965 path = object_get_canonical_path(OBJECT(mr->container));
966 }
967 visit_type_str(v, &path, name, errp);
968 if (mr->container) {
969 g_free(path);
970 }
971}
972
973static Object *memory_region_resolve_container(Object *obj, void *opaque,
974 const char *part)
975{
976 MemoryRegion *mr = MEMORY_REGION(obj);
977
978 return OBJECT(mr->container);
979}
980
Peter Crosthwaited33382d2014-06-05 23:17:01 -0700981static void memory_region_get_priority(Object *obj, Visitor *v, void *opaque,
982 const char *name, Error **errp)
983{
984 MemoryRegion *mr = MEMORY_REGION(obj);
985 int32_t value = mr->priority;
986
987 visit_type_int32(v, &value, name, errp);
988}
989
990static bool memory_region_get_may_overlap(Object *obj, Error **errp)
991{
992 MemoryRegion *mr = MEMORY_REGION(obj);
993
994 return mr->may_overlap;
995}
996
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -0700997static void memory_region_get_size(Object *obj, Visitor *v, void *opaque,
998 const char *name, Error **errp)
999{
1000 MemoryRegion *mr = MEMORY_REGION(obj);
1001 uint64_t value = memory_region_size(mr);
1002
1003 visit_type_uint64(v, &value, name, errp);
1004}
1005
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001006static void memory_region_initfn(Object *obj)
1007{
1008 MemoryRegion *mr = MEMORY_REGION(obj);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001009 ObjectProperty *op;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001010
1011 mr->ops = &unassigned_mem_ops;
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001012 mr->ram_addr = RAM_ADDR_INVALID;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001013 mr->enabled = true;
1014 mr->romd_mode = true;
1015 mr->destructor = memory_region_destructor_none;
1016 QTAILQ_INIT(&mr->subregions);
1017 QTAILQ_INIT(&mr->coalesced);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -07001018
1019 op = object_property_add(OBJECT(mr), "container",
1020 "link<" TYPE_MEMORY_REGION ">",
1021 memory_region_get_container,
1022 NULL, /* memory_region_set_container */
1023 NULL, NULL, &error_abort);
1024 op->resolve = memory_region_resolve_container;
1025
1026 object_property_add(OBJECT(mr), "addr", "uint64",
1027 memory_region_get_addr,
1028 NULL, /* memory_region_set_addr */
1029 NULL, NULL, &error_abort);
Peter Crosthwaited33382d2014-06-05 23:17:01 -07001030 object_property_add(OBJECT(mr), "priority", "uint32",
1031 memory_region_get_priority,
1032 NULL, /* memory_region_set_priority */
1033 NULL, NULL, &error_abort);
1034 object_property_add_bool(OBJECT(mr), "may-overlap",
1035 memory_region_get_may_overlap,
1036 NULL, /* memory_region_set_may_overlap */
1037 &error_abort);
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -07001038 object_property_add(OBJECT(mr), "size", "uint64",
1039 memory_region_get_size,
1040 NULL, /* memory_region_set_size, */
1041 NULL, NULL, &error_abort);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001042}
1043
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001044static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
1045 unsigned size)
1046{
1047#ifdef DEBUG_UNASSIGNED
1048 printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
1049#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001050 if (current_cpu != NULL) {
1051 cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001052 }
Jan Kiszka68a74392013-09-02 18:43:31 +02001053 return 0;
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001054}
1055
1056static void unassigned_mem_write(void *opaque, hwaddr addr,
1057 uint64_t val, unsigned size)
1058{
1059#ifdef DEBUG_UNASSIGNED
1060 printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val);
1061#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001062 if (current_cpu != NULL) {
1063 cpu_unassigned_access(current_cpu, addr, true, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001064 }
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001065}
1066
Paolo Bonzinid1970632013-05-24 13:23:38 +02001067static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
1068 unsigned size, bool is_write)
1069{
1070 return false;
1071}
1072
1073const MemoryRegionOps unassigned_mem_ops = {
1074 .valid.accepts = unassigned_mem_accepts,
1075 .endianness = DEVICE_NATIVE_ENDIAN,
1076};
1077
Paolo Bonzinid2702032013-05-24 11:55:06 +02001078bool memory_region_access_valid(MemoryRegion *mr,
1079 hwaddr addr,
1080 unsigned size,
1081 bool is_write)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001082{
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001083 int access_size_min, access_size_max;
1084 int access_size, i;
Avi Kivity897fa7c2011-11-13 13:05:27 +02001085
Avi Kivity093bc2c2011-07-26 14:26:01 +03001086 if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
1087 return false;
1088 }
1089
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001090 if (!mr->ops->valid.accepts) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001091 return true;
1092 }
1093
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001094 access_size_min = mr->ops->valid.min_access_size;
1095 if (!mr->ops->valid.min_access_size) {
1096 access_size_min = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001097 }
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001098
1099 access_size_max = mr->ops->valid.max_access_size;
1100 if (!mr->ops->valid.max_access_size) {
1101 access_size_max = 4;
1102 }
1103
1104 access_size = MAX(MIN(size, access_size_max), access_size_min);
1105 for (i = 0; i < size; i += access_size) {
1106 if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
1107 is_write)) {
1108 return false;
1109 }
1110 }
1111
Avi Kivity093bc2c2011-07-26 14:26:01 +03001112 return true;
1113}
1114
Peter Maydellcc05c432015-04-26 16:49:23 +01001115static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
1116 hwaddr addr,
1117 uint64_t *pval,
1118 unsigned size,
1119 MemTxAttrs attrs)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001120{
Peter Maydellcc05c432015-04-26 16:49:23 +01001121 *pval = 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001122
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001123 if (mr->ops->read) {
Peter Maydellcc05c432015-04-26 16:49:23 +01001124 return access_with_adjusted_size(addr, pval, size,
1125 mr->ops->impl.min_access_size,
1126 mr->ops->impl.max_access_size,
1127 memory_region_read_accessor,
1128 mr, attrs);
1129 } else if (mr->ops->read_with_attrs) {
1130 return access_with_adjusted_size(addr, pval, size,
1131 mr->ops->impl.min_access_size,
1132 mr->ops->impl.max_access_size,
1133 memory_region_read_with_attrs_accessor,
1134 mr, attrs);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001135 } else {
Peter Maydellcc05c432015-04-26 16:49:23 +01001136 return access_with_adjusted_size(addr, pval, size, 1, 4,
1137 memory_region_oldmmio_read_accessor,
1138 mr, attrs);
Avi Kivity74901c32011-07-26 14:26:10 +03001139 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001140}
1141
Peter Maydell3b643492015-04-26 16:49:23 +01001142MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
1143 hwaddr addr,
1144 uint64_t *pval,
1145 unsigned size,
1146 MemTxAttrs attrs)
Avi Kivitya621f382012-01-02 13:12:08 +02001147{
Peter Maydellcc05c432015-04-26 16:49:23 +01001148 MemTxResult r;
1149
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001150 if (!memory_region_access_valid(mr, addr, size, false)) {
1151 *pval = unassigned_mem_read(mr, addr, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001152 return MEMTX_DECODE_ERROR;
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001153 }
Avi Kivitya621f382012-01-02 13:12:08 +02001154
Peter Maydellcc05c432015-04-26 16:49:23 +01001155 r = memory_region_dispatch_read1(mr, addr, pval, size, attrs);
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001156 adjust_endianness(mr, pval, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001157 return r;
Avi Kivitya621f382012-01-02 13:12:08 +02001158}
1159
Peter Maydell3b643492015-04-26 16:49:23 +01001160MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
1161 hwaddr addr,
1162 uint64_t data,
1163 unsigned size,
1164 MemTxAttrs attrs)
Avi Kivitya621f382012-01-02 13:12:08 +02001165{
Avi Kivity897fa7c2011-11-13 13:05:27 +02001166 if (!memory_region_access_valid(mr, addr, size, true)) {
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001167 unassigned_mem_write(mr, addr, data, size);
Peter Maydellcc05c432015-04-26 16:49:23 +01001168 return MEMTX_DECODE_ERROR;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001169 }
1170
Avi Kivitya621f382012-01-02 13:12:08 +02001171 adjust_endianness(mr, &data, size);
1172
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001173 if (mr->ops->write) {
Peter Maydellcc05c432015-04-26 16:49:23 +01001174 return access_with_adjusted_size(addr, &data, size,
1175 mr->ops->impl.min_access_size,
1176 mr->ops->impl.max_access_size,
1177 memory_region_write_accessor, mr,
1178 attrs);
1179 } else if (mr->ops->write_with_attrs) {
1180 return
1181 access_with_adjusted_size(addr, &data, size,
1182 mr->ops->impl.min_access_size,
1183 mr->ops->impl.max_access_size,
1184 memory_region_write_with_attrs_accessor,
1185 mr, attrs);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001186 } else {
Peter Maydellcc05c432015-04-26 16:49:23 +01001187 return access_with_adjusted_size(addr, &data, size, 1, 4,
1188 memory_region_oldmmio_write_accessor,
1189 mr, attrs);
Avi Kivity74901c32011-07-26 14:26:10 +03001190 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001191}
1192
Avi Kivity093bc2c2011-07-26 14:26:01 +03001193void memory_region_init_io(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001194 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001195 const MemoryRegionOps *ops,
1196 void *opaque,
1197 const char *name,
1198 uint64_t size)
1199{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001200 memory_region_init(mr, owner, name, size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001201 mr->ops = ops;
1202 mr->opaque = opaque;
Avi Kivity14a3c102011-07-26 14:26:06 +03001203 mr->terminates = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001204}
1205
1206void memory_region_init_ram(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001207 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001208 const char *name,
Hu Tao49946532014-09-09 13:27:55 +08001209 uint64_t size,
1210 Error **errp)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001211{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001212 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001213 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001214 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +03001215 mr->destructor = memory_region_destructor_ram;
Hu Tao49946532014-09-09 13:27:55 +08001216 mr->ram_addr = qemu_ram_alloc(size, mr, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001217 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001218}
1219
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001220void memory_region_init_resizeable_ram(MemoryRegion *mr,
1221 Object *owner,
1222 const char *name,
1223 uint64_t size,
1224 uint64_t max_size,
1225 void (*resized)(const char*,
1226 uint64_t length,
1227 void *host),
1228 Error **errp)
1229{
1230 memory_region_init(mr, owner, name, size);
1231 mr->ram = true;
1232 mr->terminates = true;
1233 mr->destructor = memory_region_destructor_ram;
1234 mr->ram_addr = qemu_ram_alloc_resizeable(size, max_size, resized, mr, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001235 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001236}
1237
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001238#ifdef __linux__
1239void memory_region_init_ram_from_file(MemoryRegion *mr,
1240 struct Object *owner,
1241 const char *name,
1242 uint64_t size,
Paolo Bonzinidbcb8982014-06-10 19:15:24 +08001243 bool share,
Paolo Bonzini7f56e742014-05-14 17:43:20 +08001244 const char *path,
1245 Error **errp)
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001246{
1247 memory_region_init(mr, owner, name, size);
1248 mr->ram = true;
1249 mr->terminates = true;
1250 mr->destructor = memory_region_destructor_ram;
Paolo Bonzinidbcb8982014-06-10 19:15:24 +08001251 mr->ram_addr = qemu_ram_alloc_from_file(size, mr, share, path, errp);
Paolo Bonzini677e7802015-03-23 10:53:21 +01001252 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001253}
1254#endif
1255
Avi Kivity093bc2c2011-07-26 14:26:01 +03001256void memory_region_init_ram_ptr(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001257 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001258 const char *name,
1259 uint64_t size,
1260 void *ptr)
1261{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001262 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001263 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001264 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +03001265 mr->destructor = memory_region_destructor_ram_from_ptr;
Paolo Bonzini677e7802015-03-23 10:53:21 +01001266 mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
Hu Taoef701d72014-09-09 13:27:54 +08001267
1268 /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
1269 assert(ptr != NULL);
1270 mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001271}
1272
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301273void memory_region_set_skip_dump(MemoryRegion *mr)
1274{
1275 mr->skip_dump = true;
1276}
1277
Avi Kivity093bc2c2011-07-26 14:26:01 +03001278void memory_region_init_alias(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001279 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001280 const char *name,
1281 MemoryRegion *orig,
Avi Kivitya8170e52012-10-23 12:30:10 +02001282 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001283 uint64_t size)
1284{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001285 memory_region_init(mr, owner, name, size);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001286 memory_region_ref(orig);
1287 mr->destructor = memory_region_destructor_alias;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001288 mr->alias = orig;
1289 mr->alias_offset = offset;
1290}
1291
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001292void memory_region_init_rom_device(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001293 Object *owner,
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001294 const MemoryRegionOps *ops,
Avi Kivity75f59412011-08-26 00:35:15 +03001295 void *opaque,
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001296 const char *name,
Hu Tao33e0eb52014-09-09 13:27:57 +08001297 uint64_t size,
1298 Error **errp)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001299{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001300 memory_region_init(mr, owner, name, size);
Avi Kivity7bc2b9c2011-08-25 14:56:14 +03001301 mr->ops = ops;
Avi Kivity75f59412011-08-26 00:35:15 +03001302 mr->opaque = opaque;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001303 mr->terminates = true;
Avi Kivity75c578d2012-01-02 15:40:52 +02001304 mr->rom_device = true;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001305 mr->destructor = memory_region_destructor_rom_device;
Hu Tao33e0eb52014-09-09 13:27:57 +08001306 mr->ram_addr = qemu_ram_alloc(size, mr, errp);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001307}
1308
Avi Kivity30951152012-10-30 13:47:46 +02001309void memory_region_init_iommu(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001310 Object *owner,
Avi Kivity30951152012-10-30 13:47:46 +02001311 const MemoryRegionIOMMUOps *ops,
1312 const char *name,
1313 uint64_t size)
1314{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001315 memory_region_init(mr, owner, name, size);
Avi Kivity30951152012-10-30 13:47:46 +02001316 mr->iommu_ops = ops,
1317 mr->terminates = true; /* then re-forwards */
David Gibson06866572013-05-14 19:13:56 +10001318 notifier_list_init(&mr->iommu_notify);
Avi Kivity30951152012-10-30 13:47:46 +02001319}
1320
Jan Kiszka1660e722011-10-23 16:01:19 +02001321void memory_region_init_reservation(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001322 Object *owner,
Jan Kiszka1660e722011-10-23 16:01:19 +02001323 const char *name,
1324 uint64_t size)
1325{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001326 memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size);
Jan Kiszka1660e722011-10-23 16:01:19 +02001327}
1328
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001329static void memory_region_finalize(Object *obj)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001330{
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001331 MemoryRegion *mr = MEMORY_REGION(obj);
1332
Avi Kivity093bc2c2011-07-26 14:26:01 +03001333 assert(QTAILQ_EMPTY(&mr->subregions));
Avi Kivity545e92e2011-08-08 19:58:48 +03001334 mr->destructor(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001335 memory_region_clear_coalescing(mr);
Peter Maydell302fa282014-08-19 20:05:46 +01001336 g_free((char *)mr->name);
Anthony Liguori7267c092011-08-20 22:09:37 -05001337 g_free(mr->ioeventfds);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001338}
1339
Paolo Bonzini803c0812013-05-07 06:59:09 +02001340Object *memory_region_owner(MemoryRegion *mr)
1341{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001342 Object *obj = OBJECT(mr);
1343 return obj->parent;
Paolo Bonzini803c0812013-05-07 06:59:09 +02001344}
1345
Paolo Bonzini46637be2013-05-07 09:06:00 +02001346void memory_region_ref(MemoryRegion *mr)
1347{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001348 /* MMIO callbacks most likely will access data that belongs
1349 * to the owner, hence the need to ref/unref the owner whenever
1350 * the memory region is in use.
1351 *
1352 * The memory region is a child of its owner. As long as the
1353 * owner doesn't call unparent itself on the memory region,
1354 * ref-ing the owner will also keep the memory region alive.
1355 * Memory regions without an owner are supposed to never go away,
1356 * but we still ref/unref them for debugging purposes.
1357 */
1358 Object *obj = OBJECT(mr);
1359 if (obj && obj->parent) {
1360 object_ref(obj->parent);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001361 } else {
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001362 object_ref(obj);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001363 }
1364}
1365
1366void memory_region_unref(MemoryRegion *mr)
1367{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001368 Object *obj = OBJECT(mr);
1369 if (obj && obj->parent) {
1370 object_unref(obj->parent);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001371 } else {
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001372 object_unref(obj);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001373 }
1374}
1375
Avi Kivity093bc2c2011-07-26 14:26:01 +03001376uint64_t memory_region_size(MemoryRegion *mr)
1377{
Avi Kivity08dafab2011-10-16 13:19:17 +02001378 if (int128_eq(mr->size, int128_2_64())) {
1379 return UINT64_MAX;
1380 }
1381 return int128_get64(mr->size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001382}
1383
Peter Crosthwaite5d546d42014-08-14 23:55:03 -07001384const char *memory_region_name(const MemoryRegion *mr)
Avi Kivity8991c792011-12-20 15:53:11 +02001385{
Peter Crosthwaited1dd32a2014-08-25 20:10:24 -07001386 if (!mr->name) {
1387 ((MemoryRegion *)mr)->name =
1388 object_get_canonical_path_component(OBJECT(mr));
1389 }
Peter Maydell302fa282014-08-19 20:05:46 +01001390 return mr->name;
Avi Kivity8991c792011-12-20 15:53:11 +02001391}
1392
Avi Kivity8ea92522011-12-08 15:58:43 +02001393bool memory_region_is_ram(MemoryRegion *mr)
1394{
1395 return mr->ram;
1396}
1397
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301398bool memory_region_is_skip_dump(MemoryRegion *mr)
1399{
1400 return mr->skip_dump;
1401}
1402
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +01001403uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
Avi Kivity55043ba2011-12-15 17:20:34 +02001404{
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001405 uint8_t mask = mr->dirty_log_mask;
1406 if (global_dirty_log) {
1407 mask |= (1 << DIRTY_MEMORY_MIGRATION);
1408 }
1409 return mask;
Avi Kivity55043ba2011-12-15 17:20:34 +02001410}
1411
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +01001412bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
1413{
1414 return memory_region_get_dirty_log_mask(mr) & (1 << client);
1415}
1416
Avi Kivityce7923d2011-12-08 16:05:11 +02001417bool memory_region_is_rom(MemoryRegion *mr)
1418{
1419 return mr->ram && mr->readonly;
1420}
1421
Avi Kivity30951152012-10-30 13:47:46 +02001422bool memory_region_is_iommu(MemoryRegion *mr)
1423{
1424 return mr->iommu_ops;
1425}
1426
David Gibson06866572013-05-14 19:13:56 +10001427void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n)
1428{
1429 notifier_list_add(&mr->iommu_notify, n);
1430}
1431
1432void memory_region_unregister_iommu_notifier(Notifier *n)
1433{
1434 notifier_remove(n);
1435}
1436
1437void memory_region_notify_iommu(MemoryRegion *mr,
1438 IOMMUTLBEntry entry)
1439{
1440 assert(memory_region_is_iommu(mr));
1441 notifier_list_notify(&mr->iommu_notify, &entry);
1442}
1443
Avi Kivity093bc2c2011-07-26 14:26:01 +03001444void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
1445{
Avi Kivity5a583342011-07-26 14:26:02 +03001446 uint8_t mask = 1 << client;
1447
Paolo Bonzinidbddac62015-03-23 10:31:53 +01001448 assert(client == DIRTY_MEMORY_VGA);
Jan Kiszka59023ef2012-08-23 13:02:30 +02001449 memory_region_transaction_begin();
Avi Kivity5a583342011-07-26 14:26:02 +03001450 mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
Jan Kiszka22bde712012-11-05 16:45:56 +01001451 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001452 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001453}
1454
Avi Kivitya8170e52012-10-23 12:30:10 +02001455bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
1456 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001457{
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001458 assert(mr->ram_addr != RAM_ADDR_INVALID);
Juan Quintela52159192013-10-08 12:44:04 +02001459 return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001460}
1461
Avi Kivitya8170e52012-10-23 12:30:10 +02001462void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
1463 hwaddr size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001464{
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001465 assert(mr->ram_addr != RAM_ADDR_INVALID);
Paolo Bonzini58d27072015-03-23 11:56:01 +01001466 cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size,
1467 memory_region_get_dirty_log_mask(mr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001468}
1469
Juan Quintela6c279db2012-10-17 20:24:28 +02001470bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
1471 hwaddr size, unsigned client)
1472{
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001473 assert(mr->ram_addr != RAM_ADDR_INVALID);
Stefan Hajnoczi03eebc92014-12-02 11:23:18 +00001474 return cpu_physical_memory_test_and_clear_dirty(mr->ram_addr + addr,
1475 size, client);
Juan Quintela6c279db2012-10-17 20:24:28 +02001476}
1477
1478
Avi Kivity093bc2c2011-07-26 14:26:01 +03001479void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
1480{
Avi Kivity0d673e32012-10-02 15:28:50 +02001481 AddressSpace *as;
Avi Kivity5a583342011-07-26 14:26:02 +03001482 FlatRange *fr;
1483
Avi Kivity0d673e32012-10-02 15:28:50 +02001484 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Paolo Bonzini856d7242013-05-06 11:57:21 +02001485 FlatView *view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001486 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity0d673e32012-10-02 15:28:50 +02001487 if (fr->mr == mr) {
1488 MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
1489 }
Avi Kivity5a583342011-07-26 14:26:02 +03001490 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001491 flatview_unref(view);
Avi Kivity5a583342011-07-26 14:26:02 +03001492 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001493}
1494
1495void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
1496{
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001497 if (mr->readonly != readonly) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02001498 memory_region_transaction_begin();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001499 mr->readonly = readonly;
Jan Kiszka22bde712012-11-05 16:45:56 +01001500 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001501 memory_region_transaction_commit();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001502 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001503}
1504
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001505void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001506{
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001507 if (mr->romd_mode != romd_mode) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02001508 memory_region_transaction_begin();
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001509 mr->romd_mode = romd_mode;
Jan Kiszka22bde712012-11-05 16:45:56 +01001510 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001511 memory_region_transaction_commit();
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001512 }
1513}
1514
Avi Kivitya8170e52012-10-23 12:30:10 +02001515void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
1516 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001517{
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001518 assert(mr->ram_addr != RAM_ADDR_INVALID);
Stefan Hajnoczi03eebc92014-12-02 11:23:18 +00001519 cpu_physical_memory_test_and_clear_dirty(mr->ram_addr + addr, size,
1520 client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001521}
1522
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001523int memory_region_get_fd(MemoryRegion *mr)
1524{
1525 if (mr->alias) {
1526 return memory_region_get_fd(mr->alias);
1527 }
1528
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001529 assert(mr->ram_addr != RAM_ADDR_INVALID);
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001530
1531 return qemu_get_ram_fd(mr->ram_addr & TARGET_PAGE_MASK);
1532}
1533
Avi Kivity093bc2c2011-07-26 14:26:01 +03001534void *memory_region_get_ram_ptr(MemoryRegion *mr)
1535{
1536 if (mr->alias) {
1537 return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
1538 }
1539
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001540 assert(mr->ram_addr != RAM_ADDR_INVALID);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001541
Jan Kiszka021d26d2011-08-30 00:38:24 +02001542 return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001543}
1544
Paolo Bonzini37d7c082015-03-23 10:21:46 +01001545void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
1546{
Paolo Bonziniec05ec22015-03-29 09:31:43 +02001547 assert(mr->ram_addr != RAM_ADDR_INVALID);
Paolo Bonzini37d7c082015-03-23 10:21:46 +01001548
1549 qemu_ram_resize(mr->ram_addr, newsize, errp);
1550}
1551
Avi Kivity0d673e32012-10-02 15:28:50 +02001552static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001553{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001554 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001555 FlatRange *fr;
1556 CoalescedMemoryRange *cmr;
1557 AddrRange tmp;
Avi Kivity95d29942012-10-02 18:21:54 +02001558 MemoryRegionSection section;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001559
Paolo Bonzini856d7242013-05-06 11:57:21 +02001560 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001561 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001562 if (fr->mr == mr) {
Avi Kivity95d29942012-10-02 18:21:54 +02001563 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +02001564 .address_space = as,
Avi Kivity95d29942012-10-02 18:21:54 +02001565 .offset_within_address_space = int128_get64(fr->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001566 .size = fr->addr.size,
Avi Kivity95d29942012-10-02 18:21:54 +02001567 };
1568
1569 MEMORY_LISTENER_CALL(coalesced_mmio_del, Reverse, &section,
1570 int128_get64(fr->addr.start),
1571 int128_get64(fr->addr.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001572 QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
1573 tmp = addrrange_shift(cmr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001574 int128_sub(fr->addr.start,
1575 int128_make64(fr->offset_in_region)));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001576 if (!addrrange_intersects(tmp, fr->addr)) {
1577 continue;
1578 }
1579 tmp = addrrange_intersection(tmp, fr->addr);
Avi Kivity95d29942012-10-02 18:21:54 +02001580 MEMORY_LISTENER_CALL(coalesced_mmio_add, Forward, &section,
1581 int128_get64(tmp.start),
1582 int128_get64(tmp.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001583 }
1584 }
1585 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001586 flatview_unref(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001587}
1588
Avi Kivity0d673e32012-10-02 15:28:50 +02001589static void memory_region_update_coalesced_range(MemoryRegion *mr)
1590{
1591 AddressSpace *as;
1592
1593 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1594 memory_region_update_coalesced_range_as(mr, as);
1595 }
1596}
1597
Avi Kivity093bc2c2011-07-26 14:26:01 +03001598void memory_region_set_coalescing(MemoryRegion *mr)
1599{
1600 memory_region_clear_coalescing(mr);
Avi Kivity08dafab2011-10-16 13:19:17 +02001601 memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001602}
1603
1604void memory_region_add_coalescing(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001605 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001606 uint64_t size)
1607{
Anthony Liguori7267c092011-08-20 22:09:37 -05001608 CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001609
Avi Kivity08dafab2011-10-16 13:19:17 +02001610 cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001611 QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
1612 memory_region_update_coalesced_range(mr);
Jan Kiszkad4105152012-08-23 13:02:29 +02001613 memory_region_set_flush_coalesced(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001614}
1615
1616void memory_region_clear_coalescing(MemoryRegion *mr)
1617{
1618 CoalescedMemoryRange *cmr;
Fam Zhengab5b3db2014-06-13 14:34:41 +08001619 bool updated = false;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001620
Jan Kiszkad4105152012-08-23 13:02:29 +02001621 qemu_flush_coalesced_mmio_buffer();
1622 mr->flush_coalesced_mmio = false;
1623
Avi Kivity093bc2c2011-07-26 14:26:01 +03001624 while (!QTAILQ_EMPTY(&mr->coalesced)) {
1625 cmr = QTAILQ_FIRST(&mr->coalesced);
1626 QTAILQ_REMOVE(&mr->coalesced, cmr, link);
Anthony Liguori7267c092011-08-20 22:09:37 -05001627 g_free(cmr);
Fam Zhengab5b3db2014-06-13 14:34:41 +08001628 updated = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001629 }
Fam Zhengab5b3db2014-06-13 14:34:41 +08001630
1631 if (updated) {
1632 memory_region_update_coalesced_range(mr);
1633 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001634}
1635
Jan Kiszkad4105152012-08-23 13:02:29 +02001636void memory_region_set_flush_coalesced(MemoryRegion *mr)
1637{
1638 mr->flush_coalesced_mmio = true;
1639}
1640
1641void memory_region_clear_flush_coalesced(MemoryRegion *mr)
1642{
1643 qemu_flush_coalesced_mmio_buffer();
1644 if (QTAILQ_EMPTY(&mr->coalesced)) {
1645 mr->flush_coalesced_mmio = false;
1646 }
1647}
1648
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001649void memory_region_add_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001650 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001651 unsigned size,
1652 bool match_data,
1653 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001654 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001655{
1656 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02001657 .addr.start = int128_make64(addr),
1658 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001659 .match_data = match_data,
1660 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001661 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001662 };
1663 unsigned i;
1664
Alexander Graf28f362b2012-10-15 20:30:28 +02001665 adjust_endianness(mr, &mrfd.data, size);
Jan Kiszka59023ef2012-08-23 13:02:30 +02001666 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001667 for (i = 0; i < mr->ioeventfd_nb; ++i) {
1668 if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
1669 break;
1670 }
1671 }
1672 ++mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05001673 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001674 sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
1675 memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
1676 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
1677 mr->ioeventfds[i] = mrfd;
Gonglei4dc56152014-05-08 11:47:32 +08001678 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001679 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001680}
1681
1682void memory_region_del_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001683 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001684 unsigned size,
1685 bool match_data,
1686 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001687 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001688{
1689 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02001690 .addr.start = int128_make64(addr),
1691 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001692 .match_data = match_data,
1693 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001694 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001695 };
1696 unsigned i;
1697
Alexander Graf28f362b2012-10-15 20:30:28 +02001698 adjust_endianness(mr, &mrfd.data, size);
Jan Kiszka59023ef2012-08-23 13:02:30 +02001699 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001700 for (i = 0; i < mr->ioeventfd_nb; ++i) {
1701 if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
1702 break;
1703 }
1704 }
1705 assert(i != mr->ioeventfd_nb);
1706 memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
1707 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
1708 --mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05001709 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001710 sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
Gonglei4dc56152014-05-08 11:47:32 +08001711 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001712 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001713}
1714
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001715static void memory_region_update_container_subregions(MemoryRegion *subregion)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001716{
Peter Crosthwaite05987012014-06-05 23:14:44 -07001717 hwaddr offset = subregion->addr;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001718 MemoryRegion *mr = subregion->container;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001719 MemoryRegion *other;
1720
Jan Kiszka59023ef2012-08-23 13:02:30 +02001721 memory_region_transaction_begin();
1722
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001723 memory_region_ref(subregion);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001724 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
1725 if (subregion->may_overlap || other->may_overlap) {
1726 continue;
1727 }
Hu Tao2c7cfd62013-03-15 14:32:01 +08001728 if (int128_ge(int128_make64(offset),
Avi Kivity08dafab2011-10-16 13:19:17 +02001729 int128_add(int128_make64(other->addr), other->size))
1730 || int128_le(int128_add(int128_make64(offset), subregion->size),
1731 int128_make64(other->addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001732 continue;
1733 }
Anthony Liguoria5e1cbc2011-08-22 11:14:56 -05001734#if 0
Michael Walle860329b2011-09-15 23:16:49 +02001735 printf("warning: subregion collision %llx/%llx (%s) "
1736 "vs %llx/%llx (%s)\n",
Avi Kivity093bc2c2011-07-26 14:26:01 +03001737 (unsigned long long)offset,
Avi Kivity08dafab2011-10-16 13:19:17 +02001738 (unsigned long long)int128_get64(subregion->size),
Michael Walle860329b2011-09-15 23:16:49 +02001739 subregion->name,
1740 (unsigned long long)other->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001741 (unsigned long long)int128_get64(other->size),
Michael Walle860329b2011-09-15 23:16:49 +02001742 other->name);
Anthony Liguoria5e1cbc2011-08-22 11:14:56 -05001743#endif
Avi Kivity093bc2c2011-07-26 14:26:01 +03001744 }
1745 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
1746 if (subregion->priority >= other->priority) {
1747 QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
1748 goto done;
1749 }
1750 }
1751 QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
1752done:
Jan Kiszka22bde712012-11-05 16:45:56 +01001753 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001754 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001755}
1756
Peter Crosthwaite05987012014-06-05 23:14:44 -07001757static void memory_region_add_subregion_common(MemoryRegion *mr,
1758 hwaddr offset,
1759 MemoryRegion *subregion)
1760{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001761 assert(!subregion->container);
1762 subregion->container = mr;
Peter Crosthwaite05987012014-06-05 23:14:44 -07001763 subregion->addr = offset;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001764 memory_region_update_container_subregions(subregion);
Peter Crosthwaite05987012014-06-05 23:14:44 -07001765}
Avi Kivity093bc2c2011-07-26 14:26:01 +03001766
1767void memory_region_add_subregion(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001768 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001769 MemoryRegion *subregion)
1770{
1771 subregion->may_overlap = false;
1772 subregion->priority = 0;
1773 memory_region_add_subregion_common(mr, offset, subregion);
1774}
1775
1776void memory_region_add_subregion_overlap(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001777 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001778 MemoryRegion *subregion,
Marcel Apfelbauma1ff8ae2013-09-16 11:21:14 +03001779 int priority)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001780{
1781 subregion->may_overlap = true;
1782 subregion->priority = priority;
1783 memory_region_add_subregion_common(mr, offset, subregion);
1784}
1785
1786void memory_region_del_subregion(MemoryRegion *mr,
1787 MemoryRegion *subregion)
1788{
Jan Kiszka59023ef2012-08-23 13:02:30 +02001789 memory_region_transaction_begin();
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001790 assert(subregion->container == mr);
1791 subregion->container = NULL;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001792 QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001793 memory_region_unref(subregion);
Jan Kiszka22bde712012-11-05 16:45:56 +01001794 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001795 memory_region_transaction_commit();
Avi Kivity6bba19b2011-09-14 11:54:58 +03001796}
1797
1798void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
1799{
1800 if (enabled == mr->enabled) {
1801 return;
1802 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02001803 memory_region_transaction_begin();
Avi Kivity6bba19b2011-09-14 11:54:58 +03001804 mr->enabled = enabled;
Jan Kiszka22bde712012-11-05 16:45:56 +01001805 memory_region_update_pending = true;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001806 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001807}
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001808
Michael S. Tsirkine7af4c62014-12-16 11:21:23 +02001809void memory_region_set_size(MemoryRegion *mr, uint64_t size)
1810{
1811 Int128 s = int128_make64(size);
1812
1813 if (size == UINT64_MAX) {
1814 s = int128_2_64();
1815 }
1816 if (int128_eq(s, mr->size)) {
1817 return;
1818 }
1819 memory_region_transaction_begin();
1820 mr->size = s;
1821 memory_region_update_pending = true;
1822 memory_region_transaction_commit();
1823}
1824
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001825static void memory_region_readd_subregion(MemoryRegion *mr)
Avi Kivity2282e1a2011-09-14 12:10:12 +03001826{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001827 MemoryRegion *container = mr->container;
Avi Kivity2282e1a2011-09-14 12:10:12 +03001828
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001829 if (container) {
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001830 memory_region_transaction_begin();
1831 memory_region_ref(mr);
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001832 memory_region_del_subregion(container, mr);
1833 mr->container = container;
1834 memory_region_update_container_subregions(mr);
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001835 memory_region_unref(mr);
1836 memory_region_transaction_commit();
Avi Kivity2282e1a2011-09-14 12:10:12 +03001837 }
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001838}
Avi Kivity2282e1a2011-09-14 12:10:12 +03001839
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001840void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
1841{
1842 if (addr != mr->addr) {
1843 mr->addr = addr;
1844 memory_region_readd_subregion(mr);
1845 }
Avi Kivity2282e1a2011-09-14 12:10:12 +03001846}
1847
Avi Kivitya8170e52012-10-23 12:30:10 +02001848void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
Avi Kivity47033592011-12-04 19:16:50 +02001849{
Avi Kivity47033592011-12-04 19:16:50 +02001850 assert(mr->alias);
Avi Kivity47033592011-12-04 19:16:50 +02001851
Jan Kiszka59023ef2012-08-23 13:02:30 +02001852 if (offset == mr->alias_offset) {
Avi Kivity47033592011-12-04 19:16:50 +02001853 return;
1854 }
1855
Jan Kiszka59023ef2012-08-23 13:02:30 +02001856 memory_region_transaction_begin();
1857 mr->alias_offset = offset;
Jan Kiszka22bde712012-11-05 16:45:56 +01001858 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001859 memory_region_transaction_commit();
Avi Kivity47033592011-12-04 19:16:50 +02001860}
1861
Avi Kivitye34911c2011-12-19 12:06:23 +02001862ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
1863{
Avi Kivitye34911c2011-12-19 12:06:23 +02001864 return mr->ram_addr;
1865}
1866
Igor Mammedova2b257d2014-10-31 16:38:37 +00001867uint64_t memory_region_get_alignment(const MemoryRegion *mr)
1868{
1869 return mr->align;
1870}
1871
Avi Kivitye2177952011-12-08 15:00:18 +02001872static int cmp_flatrange_addr(const void *addr_, const void *fr_)
1873{
1874 const AddrRange *addr = addr_;
1875 const FlatRange *fr = fr_;
1876
1877 if (int128_le(addrrange_end(*addr), fr->addr.start)) {
1878 return -1;
1879 } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
1880 return 1;
1881 }
1882 return 0;
1883}
1884
Paolo Bonzini99e86342013-05-06 10:26:13 +02001885static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
Avi Kivitye2177952011-12-08 15:00:18 +02001886{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001887 return bsearch(&addr, view->ranges, view->nr,
Avi Kivitye2177952011-12-08 15:00:18 +02001888 sizeof(FlatRange), cmp_flatrange_addr);
1889}
1890
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001891bool memory_region_present(MemoryRegion *container, hwaddr addr)
Paolo Bonzini3ce10902013-07-02 13:40:48 +02001892{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001893 MemoryRegion *mr = memory_region_find(container, addr, 1).mr;
1894 if (!mr || (mr == container)) {
Paolo Bonzini3ce10902013-07-02 13:40:48 +02001895 return false;
1896 }
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001897 memory_region_unref(mr);
Paolo Bonzini3ce10902013-07-02 13:40:48 +02001898 return true;
1899}
1900
Igor Mammedoveed2bac2014-06-02 15:25:06 +02001901bool memory_region_is_mapped(MemoryRegion *mr)
1902{
1903 return mr->container ? true : false;
1904}
1905
Paolo Bonzini73034e92013-05-07 15:48:28 +02001906MemoryRegionSection memory_region_find(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001907 hwaddr addr, uint64_t size)
Avi Kivitye2177952011-12-08 15:00:18 +02001908{
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001909 MemoryRegionSection ret = { .mr = NULL };
Paolo Bonzini73034e92013-05-07 15:48:28 +02001910 MemoryRegion *root;
1911 AddressSpace *as;
1912 AddrRange range;
Paolo Bonzini99e86342013-05-06 10:26:13 +02001913 FlatView *view;
Paolo Bonzini73034e92013-05-07 15:48:28 +02001914 FlatRange *fr;
Avi Kivitye2177952011-12-08 15:00:18 +02001915
Paolo Bonzini73034e92013-05-07 15:48:28 +02001916 addr += mr->addr;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001917 for (root = mr; root->container; ) {
1918 root = root->container;
Paolo Bonzini73034e92013-05-07 15:48:28 +02001919 addr += root->addr;
1920 }
1921
1922 as = memory_region_to_address_space(root);
Igor Mammedoveed2bac2014-06-02 15:25:06 +02001923 if (!as) {
1924 return ret;
1925 }
Paolo Bonzini73034e92013-05-07 15:48:28 +02001926 range = addrrange_make(int128_make64(addr), int128_make64(size));
Paolo Bonzini99e86342013-05-06 10:26:13 +02001927
Paolo Bonzini2b647662013-05-17 12:40:44 +02001928 rcu_read_lock();
1929 view = atomic_rcu_read(&as->current_map);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001930 fr = flatview_lookup(view, range);
Avi Kivitye2177952011-12-08 15:00:18 +02001931 if (!fr) {
Paolo Bonzini2b647662013-05-17 12:40:44 +02001932 goto out;
Avi Kivitye2177952011-12-08 15:00:18 +02001933 }
1934
Paolo Bonzini99e86342013-05-06 10:26:13 +02001935 while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
Avi Kivitye2177952011-12-08 15:00:18 +02001936 --fr;
1937 }
1938
1939 ret.mr = fr->mr;
Paolo Bonzini73034e92013-05-07 15:48:28 +02001940 ret.address_space = as;
Avi Kivitye2177952011-12-08 15:00:18 +02001941 range = addrrange_intersection(range, fr->addr);
1942 ret.offset_within_region = fr->offset_in_region;
1943 ret.offset_within_region += int128_get64(int128_sub(range.start,
1944 fr->addr.start));
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001945 ret.size = range.size;
Avi Kivitye2177952011-12-08 15:00:18 +02001946 ret.offset_within_address_space = int128_get64(range.start);
Avi Kivity7a8499e2012-02-08 17:01:23 +02001947 ret.readonly = fr->readonly;
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001948 memory_region_ref(ret.mr);
Paolo Bonzini2b647662013-05-17 12:40:44 +02001949out:
1950 rcu_read_unlock();
Avi Kivitye2177952011-12-08 15:00:18 +02001951 return ret;
1952}
1953
Paolo Bonzini1d671362013-04-24 10:46:55 +02001954void address_space_sync_dirty_bitmap(AddressSpace *as)
Avi Kivity86e775c2011-12-15 16:24:49 +02001955{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001956 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02001957 FlatRange *fr;
1958
Paolo Bonzini856d7242013-05-06 11:57:21 +02001959 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001960 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity72e22d22012-02-08 15:05:50 +02001961 MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
Avi Kivity7664e802011-12-11 14:47:25 +02001962 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001963 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02001964}
1965
1966void memory_global_dirty_log_start(void)
1967{
Avi Kivity7664e802011-12-11 14:47:25 +02001968 global_dirty_log = true;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001969
Avi Kivity7376e582012-02-08 21:05:17 +02001970 MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001971
1972 /* Refresh DIRTY_LOG_MIGRATION bit. */
1973 memory_region_transaction_begin();
1974 memory_region_update_pending = true;
1975 memory_region_transaction_commit();
Avi Kivity7664e802011-12-11 14:47:25 +02001976}
1977
1978void memory_global_dirty_log_stop(void)
1979{
Avi Kivity7664e802011-12-11 14:47:25 +02001980 global_dirty_log = false;
Paolo Bonzini6f6a5ef2015-03-23 10:57:21 +01001981
1982 /* Refresh DIRTY_LOG_MIGRATION bit. */
1983 memory_region_transaction_begin();
1984 memory_region_update_pending = true;
1985 memory_region_transaction_commit();
1986
Avi Kivity7376e582012-02-08 21:05:17 +02001987 MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
Avi Kivity7664e802011-12-11 14:47:25 +02001988}
1989
1990static void listener_add_address_space(MemoryListener *listener,
1991 AddressSpace *as)
1992{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001993 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02001994 FlatRange *fr;
1995
Julien Grall221b3a32012-04-04 15:15:41 +01001996 if (listener->address_space_filter
Avi Kivityf6790af2012-10-02 20:13:51 +02001997 && listener->address_space_filter != as) {
Julien Grall221b3a32012-04-04 15:15:41 +01001998 return;
1999 }
2000
Avi Kivity7664e802011-12-11 14:47:25 +02002001 if (global_dirty_log) {
Avi Kivity975aefe2012-10-02 16:39:57 +02002002 if (listener->log_global_start) {
2003 listener->log_global_start(listener);
2004 }
Avi Kivity7664e802011-12-11 14:47:25 +02002005 }
Avi Kivity975aefe2012-10-02 16:39:57 +02002006
Paolo Bonzini856d7242013-05-06 11:57:21 +02002007 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02002008 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity7664e802011-12-11 14:47:25 +02002009 MemoryRegionSection section = {
2010 .mr = fr->mr,
Avi Kivityf6790af2012-10-02 20:13:51 +02002011 .address_space = as,
Avi Kivity7664e802011-12-11 14:47:25 +02002012 .offset_within_region = fr->offset_in_region,
Paolo Bonzini052e87b2013-05-27 10:08:27 +02002013 .size = fr->addr.size,
Avi Kivity7664e802011-12-11 14:47:25 +02002014 .offset_within_address_space = int128_get64(fr->addr.start),
Avi Kivity7a8499e2012-02-08 17:01:23 +02002015 .readonly = fr->readonly,
Avi Kivity7664e802011-12-11 14:47:25 +02002016 };
Avi Kivity975aefe2012-10-02 16:39:57 +02002017 if (listener->region_add) {
2018 listener->region_add(listener, &section);
2019 }
Avi Kivity7664e802011-12-11 14:47:25 +02002020 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02002021 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02002022}
2023
Avi Kivityf6790af2012-10-02 20:13:51 +02002024void memory_listener_register(MemoryListener *listener, AddressSpace *filter)
Avi Kivity7664e802011-12-11 14:47:25 +02002025{
Avi Kivity72e22d22012-02-08 15:05:50 +02002026 MemoryListener *other = NULL;
Avi Kivity0d673e32012-10-02 15:28:50 +02002027 AddressSpace *as;
Avi Kivity72e22d22012-02-08 15:05:50 +02002028
Avi Kivity7376e582012-02-08 21:05:17 +02002029 listener->address_space_filter = filter;
Avi Kivity72e22d22012-02-08 15:05:50 +02002030 if (QTAILQ_EMPTY(&memory_listeners)
2031 || listener->priority >= QTAILQ_LAST(&memory_listeners,
2032 memory_listeners)->priority) {
2033 QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
2034 } else {
2035 QTAILQ_FOREACH(other, &memory_listeners, link) {
2036 if (listener->priority < other->priority) {
2037 break;
2038 }
2039 }
2040 QTAILQ_INSERT_BEFORE(other, listener, link);
2041 }
Avi Kivity0d673e32012-10-02 15:28:50 +02002042
2043 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
2044 listener_add_address_space(listener, as);
2045 }
Avi Kivity7664e802011-12-11 14:47:25 +02002046}
2047
2048void memory_listener_unregister(MemoryListener *listener)
2049{
Avi Kivity72e22d22012-02-08 15:05:50 +02002050 QTAILQ_REMOVE(&memory_listeners, listener, link);
Avi Kivity86e775c2011-12-15 16:24:49 +02002051}
Avi Kivitye2177952011-12-08 15:00:18 +02002052
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002053void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002054{
Paolo Bonziniac951902015-02-11 15:21:04 +01002055 memory_region_ref(root);
Jan Kiszka59023ef2012-08-23 13:02:30 +02002056 memory_region_transaction_begin();
Avi Kivity8786db72012-10-02 13:53:41 +02002057 as->root = root;
2058 as->current_map = g_new(FlatView, 1);
2059 flatview_init(as->current_map);
Avi Kivity4c19eb72012-10-30 13:47:44 +02002060 as->ioeventfd_nb = 0;
2061 as->ioeventfds = NULL;
Avi Kivity0d673e32012-10-02 15:28:50 +02002062 QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002063 as->name = g_strdup(name ? name : "anonymous");
Avi Kivityac1970f2012-10-03 16:22:53 +02002064 address_space_init_dispatch(as);
Paolo Bonzinif43793c2013-04-16 15:39:51 +02002065 memory_region_update_pending |= root->enabled;
2066 memory_region_transaction_commit();
Avi Kivity1c0ffa52011-07-26 14:26:04 +03002067}
Avi Kivity658b2222011-07-26 14:26:08 +03002068
Paolo Bonzini374f2982013-05-17 12:37:03 +02002069static void do_address_space_destroy(AddressSpace *as)
Avi Kivity83f3c252012-10-07 12:59:55 +02002070{
David Gibson078c44f2014-05-30 12:59:00 -06002071 MemoryListener *listener;
2072
Avi Kivity83f3c252012-10-07 12:59:55 +02002073 address_space_destroy_dispatch(as);
David Gibson078c44f2014-05-30 12:59:00 -06002074
2075 QTAILQ_FOREACH(listener, &memory_listeners, link) {
2076 assert(listener->address_space_filter != as);
2077 }
2078
Paolo Bonzini856d7242013-05-06 11:57:21 +02002079 flatview_unref(as->current_map);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00002080 g_free(as->name);
Avi Kivity4c19eb72012-10-30 13:47:44 +02002081 g_free(as->ioeventfds);
Paolo Bonziniac951902015-02-11 15:21:04 +01002082 memory_region_unref(as->root);
Avi Kivity83f3c252012-10-07 12:59:55 +02002083}
2084
Paolo Bonzini374f2982013-05-17 12:37:03 +02002085void address_space_destroy(AddressSpace *as)
2086{
Paolo Bonziniac951902015-02-11 15:21:04 +01002087 MemoryRegion *root = as->root;
2088
Paolo Bonzini374f2982013-05-17 12:37:03 +02002089 /* Flush out anything from MemoryListeners listening in on this */
2090 memory_region_transaction_begin();
2091 as->root = NULL;
2092 memory_region_transaction_commit();
2093 QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
Paolo Bonzini6e48e8f2015-02-10 10:25:44 -07002094 address_space_unregister(as);
Paolo Bonzini374f2982013-05-17 12:37:03 +02002095
2096 /* At this point, as->dispatch and as->current_map are dummy
2097 * entries that the guest should never use. Wait for the old
2098 * values to expire before freeing the data.
2099 */
Paolo Bonziniac951902015-02-11 15:21:04 +01002100 as->root = root;
Paolo Bonzini374f2982013-05-17 12:37:03 +02002101 call_rcu(as, do_address_space_destroy, rcu);
2102}
2103
Blue Swirl314e2982011-09-11 20:22:05 +00002104typedef struct MemoryRegionList MemoryRegionList;
2105
2106struct MemoryRegionList {
2107 const MemoryRegion *mr;
Blue Swirl314e2982011-09-11 20:22:05 +00002108 QTAILQ_ENTRY(MemoryRegionList) queue;
2109};
2110
2111typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
2112
2113static void mtree_print_mr(fprintf_function mon_printf, void *f,
2114 const MemoryRegion *mr, unsigned int level,
Avi Kivitya8170e52012-10-23 12:30:10 +02002115 hwaddr base,
Jan Kiszka9479c572011-09-27 15:00:41 +02002116 MemoryRegionListHead *alias_print_queue)
Blue Swirl314e2982011-09-11 20:22:05 +00002117{
Jan Kiszka9479c572011-09-27 15:00:41 +02002118 MemoryRegionList *new_ml, *ml, *next_ml;
2119 MemoryRegionListHead submr_print_queue;
Blue Swirl314e2982011-09-11 20:22:05 +00002120 const MemoryRegion *submr;
2121 unsigned int i;
2122
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002123 if (!mr) {
Blue Swirl314e2982011-09-11 20:22:05 +00002124 return;
2125 }
2126
2127 for (i = 0; i < level; i++) {
2128 mon_printf(f, " ");
2129 }
2130
2131 if (mr->alias) {
2132 MemoryRegionList *ml;
2133 bool found = false;
2134
2135 /* check if the alias is already in the queue */
Jan Kiszka9479c572011-09-27 15:00:41 +02002136 QTAILQ_FOREACH(ml, alias_print_queue, queue) {
Paolo Bonzinif54bb152013-12-11 12:51:46 +01002137 if (ml->mr == mr->alias) {
Blue Swirl314e2982011-09-11 20:22:05 +00002138 found = true;
2139 }
2140 }
2141
2142 if (!found) {
2143 ml = g_new(MemoryRegionList, 1);
2144 ml->mr = mr->alias;
Jan Kiszka9479c572011-09-27 15:00:41 +02002145 QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue);
Blue Swirl314e2982011-09-11 20:22:05 +00002146 }
Jan Kiszka4896d742012-02-04 16:25:42 +01002147 mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
2148 " (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002149 "-" TARGET_FMT_plx "%s\n",
Blue Swirl314e2982011-09-11 20:22:05 +00002150 base + mr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02002151 base + mr->addr
Alex Williamsonfd1d9922013-07-19 12:42:12 -06002152 + (int128_nz(mr->size) ?
2153 (hwaddr)int128_get64(int128_sub(mr->size,
2154 int128_one())) : 0),
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002155 mr->priority,
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002156 mr->romd_mode ? 'R' : '-',
2157 !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
2158 : '-',
Peter Crosthwaite3fb18b42014-08-14 23:55:36 -07002159 memory_region_name(mr),
2160 memory_region_name(mr->alias),
Blue Swirl314e2982011-09-11 20:22:05 +00002161 mr->alias_offset,
Avi Kivity08dafab2011-10-16 13:19:17 +02002162 mr->alias_offset
Alexey Kardashevskiya66670c2013-08-30 18:10:38 +10002163 + (int128_nz(mr->size) ?
2164 (hwaddr)int128_get64(int128_sub(mr->size,
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002165 int128_one())) : 0),
2166 mr->enabled ? "" : " [disabled]");
Blue Swirl314e2982011-09-11 20:22:05 +00002167 } else {
Jan Kiszka4896d742012-02-04 16:25:42 +01002168 mon_printf(f,
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002169 TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s%s\n",
Blue Swirl314e2982011-09-11 20:22:05 +00002170 base + mr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02002171 base + mr->addr
Alex Williamsonfd1d9922013-07-19 12:42:12 -06002172 + (int128_nz(mr->size) ?
2173 (hwaddr)int128_get64(int128_sub(mr->size,
2174 int128_one())) : 0),
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002175 mr->priority,
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002176 mr->romd_mode ? 'R' : '-',
2177 !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
2178 : '-',
Gerd Hoffmannf8a9f722015-04-08 12:57:11 +02002179 memory_region_name(mr),
2180 mr->enabled ? "" : " [disabled]");
Blue Swirl314e2982011-09-11 20:22:05 +00002181 }
Jan Kiszka9479c572011-09-27 15:00:41 +02002182
2183 QTAILQ_INIT(&submr_print_queue);
2184
Blue Swirl314e2982011-09-11 20:22:05 +00002185 QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002186 new_ml = g_new(MemoryRegionList, 1);
2187 new_ml->mr = submr;
2188 QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
2189 if (new_ml->mr->addr < ml->mr->addr ||
2190 (new_ml->mr->addr == ml->mr->addr &&
2191 new_ml->mr->priority > ml->mr->priority)) {
2192 QTAILQ_INSERT_BEFORE(ml, new_ml, queue);
2193 new_ml = NULL;
2194 break;
2195 }
2196 }
2197 if (new_ml) {
2198 QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue);
2199 }
2200 }
2201
2202 QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
2203 mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr,
2204 alias_print_queue);
2205 }
2206
Avi Kivity88365e42011-11-13 12:00:55 +02002207 QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002208 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002209 }
2210}
2211
2212void mtree_info(fprintf_function mon_printf, void *f)
2213{
2214 MemoryRegionListHead ml_head;
2215 MemoryRegionList *ml, *ml2;
Avi Kivity0d673e32012-10-02 15:28:50 +02002216 AddressSpace *as;
Blue Swirl314e2982011-09-11 20:22:05 +00002217
2218 QTAILQ_INIT(&ml_head);
2219
Avi Kivity0d673e32012-10-02 15:28:50 +02002220 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Gerd Hoffmanne48816a2015-04-08 12:53:47 +02002221 mon_printf(f, "address-space: %s\n", as->name);
2222 mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head);
2223 mon_printf(f, "\n");
Blue Swirlb9f9be82012-03-10 16:58:35 +00002224 }
2225
Blue Swirl314e2982011-09-11 20:22:05 +00002226 /* print aliased regions */
2227 QTAILQ_FOREACH(ml, &ml_head, queue) {
Gerd Hoffmanne48816a2015-04-08 12:53:47 +02002228 mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr));
2229 mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head);
2230 mon_printf(f, "\n");
Blue Swirl314e2982011-09-11 20:22:05 +00002231 }
2232
2233 QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
Avi Kivity88365e42011-11-13 12:00:55 +02002234 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002235 }
Blue Swirl314e2982011-09-11 20:22:05 +00002236}
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07002237
2238static const TypeInfo memory_region_info = {
2239 .parent = TYPE_OBJECT,
2240 .name = TYPE_MEMORY_REGION,
2241 .instance_size = sizeof(MemoryRegion),
2242 .instance_init = memory_region_initfn,
2243 .instance_finalize = memory_region_finalize,
2244};
2245
2246static void memory_register_types(void)
2247{
2248 type_register_static(&memory_region_info);
2249}
2250
2251type_init(memory_register_types)