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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
Jan Kiszka22bde712012-11-05 16:45:56 +010031static unsigned memory_region_transaction_depth;
32static bool memory_region_update_pending;
Gonglei4dc56152014-05-08 11:47:32 +080033static bool ioeventfd_update_pending;
Avi Kivity7664e802011-12-11 14:47:25 +020034static bool global_dirty_log = false;
35
Avi Kivity72e22d22012-02-08 15:05:50 +020036static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
37 = QTAILQ_HEAD_INITIALIZER(memory_listeners);
Avi Kivity4ef4db82011-07-26 14:26:13 +030038
Avi Kivity0d673e32012-10-02 15:28:50 +020039static QTAILQ_HEAD(, AddressSpace) address_spaces
40 = QTAILQ_HEAD_INITIALIZER(address_spaces);
41
Avi Kivity093bc2c2011-07-26 14:26:01 +030042typedef struct AddrRange AddrRange;
43
Avi Kivity8417ceb2011-08-03 11:56:14 +030044/*
Fam Zhengc9cdaa32014-08-11 10:18:31 +080045 * Note that signed integers are needed for negative offsetting in aliases
Avi Kivity8417ceb2011-08-03 11:56:14 +030046 * (large MemoryRegion::alias_offset).
47 */
Avi Kivity093bc2c2011-07-26 14:26:01 +030048struct AddrRange {
Avi Kivity08dafab2011-10-16 13:19:17 +020049 Int128 start;
50 Int128 size;
Avi Kivity093bc2c2011-07-26 14:26:01 +030051};
52
Avi Kivity08dafab2011-10-16 13:19:17 +020053static AddrRange addrrange_make(Int128 start, Int128 size)
Avi Kivity093bc2c2011-07-26 14:26:01 +030054{
55 return (AddrRange) { start, size };
56}
57
58static bool addrrange_equal(AddrRange r1, AddrRange r2)
59{
Avi Kivity08dafab2011-10-16 13:19:17 +020060 return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030061}
62
Avi Kivity08dafab2011-10-16 13:19:17 +020063static Int128 addrrange_end(AddrRange r)
Avi Kivity093bc2c2011-07-26 14:26:01 +030064{
Avi Kivity08dafab2011-10-16 13:19:17 +020065 return int128_add(r.start, r.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030066}
67
Avi Kivity08dafab2011-10-16 13:19:17 +020068static AddrRange addrrange_shift(AddrRange range, Int128 delta)
Avi Kivity093bc2c2011-07-26 14:26:01 +030069{
Avi Kivity08dafab2011-10-16 13:19:17 +020070 int128_addto(&range.start, delta);
Avi Kivity093bc2c2011-07-26 14:26:01 +030071 return range;
72}
73
Avi Kivity08dafab2011-10-16 13:19:17 +020074static bool addrrange_contains(AddrRange range, Int128 addr)
75{
76 return int128_ge(addr, range.start)
77 && int128_lt(addr, addrrange_end(range));
78}
79
Avi Kivity093bc2c2011-07-26 14:26:01 +030080static bool addrrange_intersects(AddrRange r1, AddrRange r2)
81{
Avi Kivity08dafab2011-10-16 13:19:17 +020082 return addrrange_contains(r1, r2.start)
83 || addrrange_contains(r2, r1.start);
Avi Kivity093bc2c2011-07-26 14:26:01 +030084}
85
86static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
87{
Avi Kivity08dafab2011-10-16 13:19:17 +020088 Int128 start = int128_max(r1.start, r2.start);
89 Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
90 return addrrange_make(start, int128_sub(end, start));
Avi Kivity093bc2c2011-07-26 14:26:01 +030091}
92
Avi Kivity0e0d36b2012-02-08 16:39:45 +020093enum ListenerDirection { Forward, Reverse };
94
Avi Kivity7376e582012-02-08 21:05:17 +020095static bool memory_listener_match(MemoryListener *listener,
96 MemoryRegionSection *section)
97{
98 return !listener->address_space_filter
99 || listener->address_space_filter == section->address_space;
100}
101
102#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200103 do { \
104 MemoryListener *_listener; \
105 \
106 switch (_direction) { \
107 case Forward: \
108 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200109 if (_listener->_callback) { \
110 _listener->_callback(_listener, ##_args); \
111 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200112 } \
113 break; \
114 case Reverse: \
115 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
116 memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200117 if (_listener->_callback) { \
118 _listener->_callback(_listener, ##_args); \
119 } \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200120 } \
121 break; \
122 default: \
123 abort(); \
124 } \
125 } while (0)
126
Avi Kivity7376e582012-02-08 21:05:17 +0200127#define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \
128 do { \
129 MemoryListener *_listener; \
130 \
131 switch (_direction) { \
132 case Forward: \
133 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200134 if (_listener->_callback \
135 && memory_listener_match(_listener, _section)) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200136 _listener->_callback(_listener, _section, ##_args); \
137 } \
138 } \
139 break; \
140 case Reverse: \
141 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
142 memory_listeners, link) { \
Avi Kivity975aefe2012-10-02 16:39:57 +0200143 if (_listener->_callback \
144 && memory_listener_match(_listener, _section)) { \
Avi Kivity7376e582012-02-08 21:05:17 +0200145 _listener->_callback(_listener, _section, ##_args); \
146 } \
147 } \
148 break; \
149 default: \
150 abort(); \
151 } \
152 } while (0)
153
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200154/* No need to ref/unref .mr, the FlatRange keeps it alive. */
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200155#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \
Avi Kivity7376e582012-02-08 21:05:17 +0200156 MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200157 .mr = (fr)->mr, \
Avi Kivityf6790af2012-10-02 20:13:51 +0200158 .address_space = (as), \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200159 .offset_within_region = (fr)->offset_in_region, \
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200160 .size = (fr)->addr.size, \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200161 .offset_within_address_space = int128_get64((fr)->addr.start), \
Avi Kivity7a8499e2012-02-08 17:01:23 +0200162 .readonly = (fr)->readonly, \
Avi Kivity7376e582012-02-08 21:05:17 +0200163 }))
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200164
Avi Kivity093bc2c2011-07-26 14:26:01 +0300165struct CoalescedMemoryRange {
166 AddrRange addr;
167 QTAILQ_ENTRY(CoalescedMemoryRange) link;
168};
169
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300170struct MemoryRegionIoeventfd {
171 AddrRange addr;
172 bool match_data;
173 uint64_t data;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200174 EventNotifier *e;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300175};
176
177static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
178 MemoryRegionIoeventfd b)
179{
Avi Kivity08dafab2011-10-16 13:19:17 +0200180 if (int128_lt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300181 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200182 } else if (int128_gt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300183 return false;
Avi Kivity08dafab2011-10-16 13:19:17 +0200184 } else if (int128_lt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300185 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200186 } else if (int128_gt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300187 return false;
188 } else if (a.match_data < b.match_data) {
189 return true;
190 } else if (a.match_data > b.match_data) {
191 return false;
192 } else if (a.match_data) {
193 if (a.data < b.data) {
194 return true;
195 } else if (a.data > b.data) {
196 return false;
197 }
198 }
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200199 if (a.e < b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300200 return true;
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200201 } else if (a.e > b.e) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300202 return false;
203 }
204 return false;
205}
206
207static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a,
208 MemoryRegionIoeventfd b)
209{
210 return !memory_region_ioeventfd_before(a, b)
211 && !memory_region_ioeventfd_before(b, a);
212}
213
Avi Kivity093bc2c2011-07-26 14:26:01 +0300214typedef struct FlatRange FlatRange;
215typedef struct FlatView FlatView;
216
217/* Range of memory in the global map. Addresses are absolute. */
218struct FlatRange {
219 MemoryRegion *mr;
Avi Kivitya8170e52012-10-23 12:30:10 +0200220 hwaddr offset_in_region;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300221 AddrRange addr;
Avi Kivity5a583342011-07-26 14:26:02 +0300222 uint8_t dirty_log_mask;
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +0200223 bool romd_mode;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300224 bool readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300225};
226
227/* Flattened global view of current active memory hierarchy. Kept in sorted
228 * order.
229 */
230struct FlatView {
Paolo Bonzini374f2982013-05-17 12:37:03 +0200231 struct rcu_head rcu;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200232 unsigned ref;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300233 FlatRange *ranges;
234 unsigned nr;
235 unsigned nr_allocated;
236};
237
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300238typedef struct AddressSpaceOps AddressSpaceOps;
239
Avi Kivity093bc2c2011-07-26 14:26:01 +0300240#define FOR_EACH_FLAT_RANGE(var, view) \
241 for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
242
Avi Kivity093bc2c2011-07-26 14:26:01 +0300243static bool flatrange_equal(FlatRange *a, FlatRange *b)
244{
245 return a->mr == b->mr
246 && addrrange_equal(a->addr, b->addr)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300247 && a->offset_in_region == b->offset_in_region
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +0200248 && a->romd_mode == b->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300249 && a->readonly == b->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300250}
251
252static void flatview_init(FlatView *view)
253{
Paolo Bonzini856d7242013-05-06 11:57:21 +0200254 view->ref = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300255 view->ranges = NULL;
256 view->nr = 0;
257 view->nr_allocated = 0;
258}
259
260/* Insert a range into a given position. Caller is responsible for maintaining
261 * sorting order.
262 */
263static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
264{
265 if (view->nr == view->nr_allocated) {
266 view->nr_allocated = MAX(2 * view->nr, 10);
Anthony Liguori7267c092011-08-20 22:09:37 -0500267 view->ranges = g_realloc(view->ranges,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300268 view->nr_allocated * sizeof(*view->ranges));
269 }
270 memmove(view->ranges + pos + 1, view->ranges + pos,
271 (view->nr - pos) * sizeof(FlatRange));
272 view->ranges[pos] = *range;
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200273 memory_region_ref(range->mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300274 ++view->nr;
275}
276
277static void flatview_destroy(FlatView *view)
278{
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200279 int i;
280
281 for (i = 0; i < view->nr; i++) {
282 memory_region_unref(view->ranges[i].mr);
283 }
Anthony Liguori7267c092011-08-20 22:09:37 -0500284 g_free(view->ranges);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200285 g_free(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300286}
287
Paolo Bonzini856d7242013-05-06 11:57:21 +0200288static void flatview_ref(FlatView *view)
289{
290 atomic_inc(&view->ref);
291}
292
293static void flatview_unref(FlatView *view)
294{
295 if (atomic_fetch_dec(&view->ref) == 1) {
296 flatview_destroy(view);
297 }
298}
299
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300300static bool can_merge(FlatRange *r1, FlatRange *r2)
301{
Avi Kivity08dafab2011-10-16 13:19:17 +0200302 return int128_eq(addrrange_end(r1->addr), r2->addr.start)
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300303 && r1->mr == r2->mr
Avi Kivity08dafab2011-10-16 13:19:17 +0200304 && int128_eq(int128_add(int128_make64(r1->offset_in_region),
305 r1->addr.size),
306 int128_make64(r2->offset_in_region))
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300307 && r1->dirty_log_mask == r2->dirty_log_mask
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +0200308 && r1->romd_mode == r2->romd_mode
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300309 && r1->readonly == r2->readonly;
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300310}
311
Peter Crosthwaite8508e022013-06-03 15:31:56 +1000312/* Attempt to simplify a view by merging adjacent ranges */
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300313static void flatview_simplify(FlatView *view)
314{
315 unsigned i, j;
316
317 i = 0;
318 while (i < view->nr) {
319 j = i + 1;
320 while (j < view->nr
321 && can_merge(&view->ranges[j-1], &view->ranges[j])) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200322 int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300323 ++j;
324 }
325 ++i;
326 memmove(&view->ranges[i], &view->ranges[j],
327 (view->nr - j) * sizeof(view->ranges[j]));
328 view->nr -= j - i;
329 }
330}
331
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200332static bool memory_region_big_endian(MemoryRegion *mr)
333{
334#ifdef TARGET_WORDS_BIGENDIAN
335 return mr->ops->endianness != DEVICE_LITTLE_ENDIAN;
336#else
337 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
338#endif
339}
340
Paolo Bonzinie11ef3d2013-07-22 15:54:35 +0200341static bool memory_region_wrong_endianness(MemoryRegion *mr)
342{
343#ifdef TARGET_WORDS_BIGENDIAN
344 return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
345#else
346 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
347#endif
348}
349
350static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
351{
352 if (memory_region_wrong_endianness(mr)) {
353 switch (size) {
354 case 1:
355 break;
356 case 2:
357 *data = bswap16(*data);
358 break;
359 case 4:
360 *data = bswap32(*data);
361 break;
362 case 8:
363 *data = bswap64(*data);
364 break;
365 default:
366 abort();
367 }
368 }
369}
370
Paolo Bonzini547e9202013-07-22 15:54:36 +0200371static void memory_region_oldmmio_read_accessor(MemoryRegion *mr,
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200372 hwaddr addr,
373 uint64_t *value,
374 unsigned size,
375 unsigned shift,
376 uint64_t mask)
377{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200378 uint64_t tmp;
379
380 tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200381 trace_memory_region_ops_read(mr, addr, tmp, size);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200382 *value |= (tmp & mask) << shift;
383}
384
Paolo Bonzini547e9202013-07-22 15:54:36 +0200385static void memory_region_read_accessor(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +0200386 hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300387 uint64_t *value,
388 unsigned size,
389 unsigned shift,
390 uint64_t mask)
391{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300392 uint64_t tmp;
393
Jan Kiszkad4105152012-08-23 13:02:29 +0200394 if (mr->flush_coalesced_mmio) {
395 qemu_flush_coalesced_mmio_buffer();
396 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300397 tmp = mr->ops->read(mr->opaque, addr, size);
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200398 trace_memory_region_ops_read(mr, addr, tmp, size);
Avi Kivity164a4dc2011-08-11 10:40:25 +0300399 *value |= (tmp & mask) << shift;
400}
401
Paolo Bonzini547e9202013-07-22 15:54:36 +0200402static void memory_region_oldmmio_write_accessor(MemoryRegion *mr,
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200403 hwaddr addr,
404 uint64_t *value,
405 unsigned size,
406 unsigned shift,
407 uint64_t mask)
408{
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200409 uint64_t tmp;
410
411 tmp = (*value >> shift) & mask;
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200412 trace_memory_region_ops_write(mr, addr, tmp, size);
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200413 mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
414}
415
Paolo Bonzini547e9202013-07-22 15:54:36 +0200416static void memory_region_write_accessor(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +0200417 hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300418 uint64_t *value,
419 unsigned size,
420 unsigned shift,
421 uint64_t mask)
422{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300423 uint64_t tmp;
424
Jan Kiszkad4105152012-08-23 13:02:29 +0200425 if (mr->flush_coalesced_mmio) {
426 qemu_flush_coalesced_mmio_buffer();
427 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300428 tmp = (*value >> shift) & mask;
Paolo Bonzini55d5d042013-07-28 14:57:22 +0200429 trace_memory_region_ops_write(mr, addr, tmp, size);
Avi Kivity164a4dc2011-08-11 10:40:25 +0300430 mr->ops->write(mr->opaque, addr, tmp, size);
431}
432
Avi Kivitya8170e52012-10-23 12:30:10 +0200433static void access_with_adjusted_size(hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300434 uint64_t *value,
435 unsigned size,
436 unsigned access_size_min,
437 unsigned access_size_max,
Paolo Bonzini547e9202013-07-22 15:54:36 +0200438 void (*access)(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +0200439 hwaddr addr,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300440 uint64_t *value,
441 unsigned size,
442 unsigned shift,
443 uint64_t mask),
Paolo Bonzini547e9202013-07-22 15:54:36 +0200444 MemoryRegion *mr)
Avi Kivity164a4dc2011-08-11 10:40:25 +0300445{
446 uint64_t access_mask;
447 unsigned access_size;
448 unsigned i;
449
450 if (!access_size_min) {
451 access_size_min = 1;
452 }
453 if (!access_size_max) {
454 access_size_max = 4;
455 }
Paolo Bonzinice5d2f32013-05-24 17:45:48 +0200456
457 /* FIXME: support unaligned access? */
Avi Kivity164a4dc2011-08-11 10:40:25 +0300458 access_size = MAX(MIN(size, access_size_max), access_size_min);
459 access_mask = -1ULL >> (64 - access_size * 8);
Paolo Bonzinie7342aa2013-07-22 15:54:37 +0200460 if (memory_region_big_endian(mr)) {
461 for (i = 0; i < size; i += access_size) {
462 access(mr, addr + i, value, access_size,
463 (size - access_size - i) * 8, access_mask);
464 }
465 } else {
466 for (i = 0; i < size; i += access_size) {
467 access(mr, addr + i, value, access_size, i * 8, access_mask);
468 }
Avi Kivity164a4dc2011-08-11 10:40:25 +0300469 }
470}
471
Avi Kivitye2177952011-12-08 15:00:18 +0200472static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
473{
Avi Kivity0d673e32012-10-02 15:28:50 +0200474 AddressSpace *as;
475
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +0200476 while (mr->container) {
477 mr = mr->container;
Avi Kivitye2177952011-12-08 15:00:18 +0200478 }
Avi Kivity0d673e32012-10-02 15:28:50 +0200479 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
480 if (mr == as->root) {
481 return as;
482 }
Avi Kivitye2177952011-12-08 15:00:18 +0200483 }
Igor Mammedoveed2bac2014-06-02 15:25:06 +0200484 return NULL;
Avi Kivitye2177952011-12-08 15:00:18 +0200485}
486
Avi Kivity093bc2c2011-07-26 14:26:01 +0300487/* Render a memory region into the global view. Ranges in @view obscure
488 * ranges in @mr.
489 */
490static void render_memory_region(FlatView *view,
491 MemoryRegion *mr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200492 Int128 base,
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300493 AddrRange clip,
494 bool readonly)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300495{
496 MemoryRegion *subregion;
497 unsigned i;
Avi Kivitya8170e52012-10-23 12:30:10 +0200498 hwaddr offset_in_region;
Avi Kivity08dafab2011-10-16 13:19:17 +0200499 Int128 remain;
500 Int128 now;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300501 FlatRange fr;
502 AddrRange tmp;
503
Avi Kivity6bba19b2011-09-14 11:54:58 +0300504 if (!mr->enabled) {
505 return;
506 }
507
Avi Kivity08dafab2011-10-16 13:19:17 +0200508 int128_addto(&base, int128_make64(mr->addr));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300509 readonly |= mr->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300510
511 tmp = addrrange_make(base, mr->size);
512
513 if (!addrrange_intersects(tmp, clip)) {
514 return;
515 }
516
517 clip = addrrange_intersection(tmp, clip);
518
519 if (mr->alias) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200520 int128_subfrom(&base, int128_make64(mr->alias->addr));
521 int128_subfrom(&base, int128_make64(mr->alias_offset));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300522 render_memory_region(view, mr->alias, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300523 return;
524 }
525
526 /* Render subregions in priority order. */
527 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300528 render_memory_region(view, subregion, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300529 }
530
Avi Kivity14a3c102011-07-26 14:26:06 +0300531 if (!mr->terminates) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300532 return;
533 }
534
Avi Kivity08dafab2011-10-16 13:19:17 +0200535 offset_in_region = int128_get64(int128_sub(clip.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300536 base = clip.start;
537 remain = clip.size;
538
Peter Crosthwaite2eb74e12013-06-03 15:33:29 +1000539 fr.mr = mr;
540 fr.dirty_log_mask = mr->dirty_log_mask;
541 fr.romd_mode = mr->romd_mode;
542 fr.readonly = readonly;
543
Avi Kivity093bc2c2011-07-26 14:26:01 +0300544 /* Render the region itself into any gaps left by the current view. */
Avi Kivity08dafab2011-10-16 13:19:17 +0200545 for (i = 0; i < view->nr && int128_nz(remain); ++i) {
546 if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300547 continue;
548 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200549 if (int128_lt(base, view->ranges[i].addr.start)) {
550 now = int128_min(remain,
551 int128_sub(view->ranges[i].addr.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300552 fr.offset_in_region = offset_in_region;
553 fr.addr = addrrange_make(base, now);
554 flatview_insert(view, i, &fr);
555 ++i;
Avi Kivity08dafab2011-10-16 13:19:17 +0200556 int128_addto(&base, now);
557 offset_in_region += int128_get64(now);
558 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300559 }
Avi Kivityd26a8ca2012-10-29 18:22:36 +0200560 now = int128_sub(int128_min(int128_add(base, remain),
561 addrrange_end(view->ranges[i].addr)),
562 base);
563 int128_addto(&base, now);
564 offset_in_region += int128_get64(now);
565 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300566 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200567 if (int128_nz(remain)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300568 fr.offset_in_region = offset_in_region;
569 fr.addr = addrrange_make(base, remain);
570 flatview_insert(view, i, &fr);
571 }
572}
573
574/* Render a memory topology into a list of disjoint absolute ranges. */
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200575static FlatView *generate_memory_topology(MemoryRegion *mr)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300576{
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200577 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300578
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200579 view = g_new(FlatView, 1);
580 flatview_init(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300581
Avi Kivity83f3c252012-10-07 12:59:55 +0200582 if (mr) {
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200583 render_memory_region(view, mr, int128_zero(),
Avi Kivity83f3c252012-10-07 12:59:55 +0200584 addrrange_make(int128_zero(), int128_2_64()), false);
585 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200586 flatview_simplify(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300587
588 return view;
589}
590
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300591static void address_space_add_del_ioeventfds(AddressSpace *as,
592 MemoryRegionIoeventfd *fds_new,
593 unsigned fds_new_nb,
594 MemoryRegionIoeventfd *fds_old,
595 unsigned fds_old_nb)
596{
597 unsigned iold, inew;
Avi Kivity80a1ea32012-02-08 16:39:06 +0200598 MemoryRegionIoeventfd *fd;
599 MemoryRegionSection section;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300600
601 /* Generate a symmetric difference of the old and new fd sets, adding
602 * and deleting as necessary.
603 */
604
605 iold = inew = 0;
606 while (iold < fds_old_nb || inew < fds_new_nb) {
607 if (iold < fds_old_nb
608 && (inew == fds_new_nb
609 || memory_region_ioeventfd_before(fds_old[iold],
610 fds_new[inew]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200611 fd = &fds_old[iold];
612 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +0200613 .address_space = as,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200614 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200615 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200616 };
617 MEMORY_LISTENER_CALL(eventfd_del, Forward, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200618 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300619 ++iold;
620 } else if (inew < fds_new_nb
621 && (iold == fds_old_nb
622 || memory_region_ioeventfd_before(fds_new[inew],
623 fds_old[iold]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200624 fd = &fds_new[inew];
625 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +0200626 .address_space = as,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200627 .offset_within_address_space = int128_get64(fd->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200628 .size = fd->addr.size,
Avi Kivity80a1ea32012-02-08 16:39:06 +0200629 };
630 MEMORY_LISTENER_CALL(eventfd_add, Reverse, &section,
Paolo Bonzini753d5e12012-07-05 17:16:27 +0200631 fd->match_data, fd->data, fd->e);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300632 ++inew;
633 } else {
634 ++iold;
635 ++inew;
636 }
637 }
638}
639
Paolo Bonzini856d7242013-05-06 11:57:21 +0200640static FlatView *address_space_get_flatview(AddressSpace *as)
641{
642 FlatView *view;
643
Paolo Bonzini374f2982013-05-17 12:37:03 +0200644 rcu_read_lock();
645 view = atomic_rcu_read(&as->current_map);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200646 flatview_ref(view);
Paolo Bonzini374f2982013-05-17 12:37:03 +0200647 rcu_read_unlock();
Paolo Bonzini856d7242013-05-06 11:57:21 +0200648 return view;
649}
650
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300651static void address_space_update_ioeventfds(AddressSpace *as)
652{
Paolo Bonzini99e86342013-05-06 10:26:13 +0200653 FlatView *view;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300654 FlatRange *fr;
655 unsigned ioeventfd_nb = 0;
656 MemoryRegionIoeventfd *ioeventfds = NULL;
657 AddrRange tmp;
658 unsigned i;
659
Paolo Bonzini856d7242013-05-06 11:57:21 +0200660 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +0200661 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300662 for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
663 tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200664 int128_sub(fr->addr.start,
665 int128_make64(fr->offset_in_region)));
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300666 if (addrrange_intersects(fr->addr, tmp)) {
667 ++ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -0500668 ioeventfds = g_realloc(ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300669 ioeventfd_nb * sizeof(*ioeventfds));
670 ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
671 ioeventfds[ioeventfd_nb-1].addr = tmp;
672 }
673 }
674 }
675
676 address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
677 as->ioeventfds, as->ioeventfd_nb);
678
Anthony Liguori7267c092011-08-20 22:09:37 -0500679 g_free(as->ioeventfds);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300680 as->ioeventfds = ioeventfds;
681 as->ioeventfd_nb = ioeventfd_nb;
Paolo Bonzini856d7242013-05-06 11:57:21 +0200682 flatview_unref(view);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300683}
684
Avi Kivityb8af1af2011-07-26 14:26:12 +0300685static void address_space_update_topology_pass(AddressSpace *as,
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200686 const FlatView *old_view,
687 const FlatView *new_view,
Avi Kivityb8af1af2011-07-26 14:26:12 +0300688 bool adding)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300689{
Avi Kivity093bc2c2011-07-26 14:26:01 +0300690 unsigned iold, inew;
691 FlatRange *frold, *frnew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300692
693 /* Generate a symmetric difference of the old and new memory maps.
694 * Kill ranges in the old map, and instantiate ranges in the new map.
695 */
696 iold = inew = 0;
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200697 while (iold < old_view->nr || inew < new_view->nr) {
698 if (iold < old_view->nr) {
699 frold = &old_view->ranges[iold];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300700 } else {
701 frold = NULL;
702 }
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200703 if (inew < new_view->nr) {
704 frnew = &new_view->ranges[inew];
Avi Kivity093bc2c2011-07-26 14:26:01 +0300705 } else {
706 frnew = NULL;
707 }
708
709 if (frold
710 && (!frnew
Avi Kivity08dafab2011-10-16 13:19:17 +0200711 || int128_lt(frold->addr.start, frnew->addr.start)
712 || (int128_eq(frold->addr.start, frnew->addr.start)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300713 && !flatrange_equal(frold, frnew)))) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000714 /* In old but not in new, or in both but attributes changed. */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300715
Avi Kivityb8af1af2011-07-26 14:26:12 +0300716 if (!adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200717 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300718 }
719
Avi Kivity093bc2c2011-07-26 14:26:01 +0300720 ++iold;
721 } else if (frold && frnew && flatrange_equal(frold, frnew)) {
Peter Crosthwaite41a6e472013-06-03 15:32:42 +1000722 /* In both and unchanged (except logging may have changed) */
Avi Kivity093bc2c2011-07-26 14:26:01 +0300723
Avi Kivityb8af1af2011-07-26 14:26:12 +0300724 if (adding) {
Avi Kivity50c1e142012-02-08 21:36:02 +0200725 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300726 if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200727 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300728 } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200729 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300730 }
Avi Kivity5a583342011-07-26 14:26:02 +0300731 }
732
Avi Kivity093bc2c2011-07-26 14:26:01 +0300733 ++iold;
734 ++inew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300735 } else {
736 /* In new */
737
Avi Kivityb8af1af2011-07-26 14:26:12 +0300738 if (adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200739 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300740 }
741
Avi Kivity093bc2c2011-07-26 14:26:01 +0300742 ++inew;
743 }
744 }
Avi Kivityb8af1af2011-07-26 14:26:12 +0300745}
746
747
748static void address_space_update_topology(AddressSpace *as)
749{
Paolo Bonzini856d7242013-05-06 11:57:21 +0200750 FlatView *old_view = address_space_get_flatview(as);
Paolo Bonzinia9a0c062013-05-06 10:29:07 +0200751 FlatView *new_view = generate_memory_topology(as->root);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300752
753 address_space_update_topology_pass(as, old_view, new_view, false);
754 address_space_update_topology_pass(as, old_view, new_view, true);
755
Paolo Bonzini374f2982013-05-17 12:37:03 +0200756 /* Writes are protected by the BQL. */
757 atomic_rcu_set(&as->current_map, new_view);
758 call_rcu(old_view, flatview_unref, rcu);
Paolo Bonzini856d7242013-05-06 11:57:21 +0200759
760 /* Note that all the old MemoryRegions are still alive up to this
761 * point. This relieves most MemoryListeners from the need to
762 * ref/unref the MemoryRegions they get---unless they use them
763 * outside the iothread mutex, in which case precise reference
764 * counting is necessary.
765 */
766 flatview_unref(old_view);
767
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300768 address_space_update_ioeventfds(as);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300769}
770
Avi Kivity4ef4db82011-07-26 14:26:13 +0300771void memory_region_transaction_begin(void)
772{
Jan Kiszkabb880de2012-08-23 13:02:32 +0200773 qemu_flush_coalesced_mmio_buffer();
Avi Kivity4ef4db82011-07-26 14:26:13 +0300774 ++memory_region_transaction_depth;
775}
776
Gonglei4dc56152014-05-08 11:47:32 +0800777static void memory_region_clear_pending(void)
778{
779 memory_region_update_pending = false;
780 ioeventfd_update_pending = false;
781}
782
Avi Kivity4ef4db82011-07-26 14:26:13 +0300783void memory_region_transaction_commit(void)
784{
Avi Kivity0d673e32012-10-02 15:28:50 +0200785 AddressSpace *as;
786
Avi Kivity4ef4db82011-07-26 14:26:13 +0300787 assert(memory_region_transaction_depth);
788 --memory_region_transaction_depth;
Gonglei4dc56152014-05-08 11:47:32 +0800789 if (!memory_region_transaction_depth) {
790 if (memory_region_update_pending) {
791 MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
Jan Kiszka02e2b952012-08-23 13:02:31 +0200792
Gonglei4dc56152014-05-08 11:47:32 +0800793 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
794 address_space_update_topology(as);
795 }
796
797 MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
798 } else if (ioeventfd_update_pending) {
799 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
800 address_space_update_ioeventfds(as);
801 }
Jan Kiszka02e2b952012-08-23 13:02:31 +0200802 }
Gonglei4dc56152014-05-08 11:47:32 +0800803 memory_region_clear_pending();
804 }
Avi Kivity4ef4db82011-07-26 14:26:13 +0300805}
806
Avi Kivity545e92e2011-08-08 19:58:48 +0300807static void memory_region_destructor_none(MemoryRegion *mr)
808{
809}
810
811static void memory_region_destructor_ram(MemoryRegion *mr)
812{
813 qemu_ram_free(mr->ram_addr);
814}
815
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200816static void memory_region_destructor_alias(MemoryRegion *mr)
817{
818 memory_region_unref(mr->alias);
819}
820
Avi Kivity545e92e2011-08-08 19:58:48 +0300821static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
822{
823 qemu_ram_free_from_ptr(mr->ram_addr);
824}
825
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300826static void memory_region_destructor_rom_device(MemoryRegion *mr)
827{
828 qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300829}
830
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700831static bool memory_region_need_escape(char c)
832{
833 return c == '/' || c == '[' || c == '\\' || c == ']';
834}
835
836static char *memory_region_escape_name(const char *name)
837{
838 const char *p;
839 char *escaped, *q;
840 uint8_t c;
841 size_t bytes = 0;
842
843 for (p = name; *p; p++) {
844 bytes += memory_region_need_escape(*p) ? 4 : 1;
845 }
846 if (bytes == p - name) {
847 return g_memdup(name, bytes + 1);
848 }
849
850 escaped = g_malloc(bytes + 1);
851 for (p = name, q = escaped; *p; p++) {
852 c = *p;
853 if (unlikely(memory_region_need_escape(c))) {
854 *q++ = '\\';
855 *q++ = 'x';
856 *q++ = "0123456789abcdef"[c >> 4];
857 c = "0123456789abcdef"[c & 15];
858 }
859 *q++ = c;
860 }
861 *q = 0;
862 return escaped;
863}
864
Avi Kivity093bc2c2011-07-26 14:26:01 +0300865void memory_region_init(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400866 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300867 const char *name,
868 uint64_t size)
869{
Paolo Bonzini22a893e2014-06-11 10:58:06 +0200870 if (!owner) {
871 owner = qdev_get_machine();
872 }
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700873
Paolo Bonzini22a893e2014-06-11 10:58:06 +0200874 object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
Avi Kivity08dafab2011-10-16 13:19:17 +0200875 mr->size = int128_make64(size);
876 if (size == UINT64_MAX) {
877 mr->size = int128_2_64();
878 }
Peter Maydell302fa282014-08-19 20:05:46 +0100879 mr->name = g_strdup(name);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700880
881 if (name) {
Peter Crosthwaite843ef732014-08-19 23:56:26 -0700882 char *escaped_name = memory_region_escape_name(name);
883 char *name_array = g_strdup_printf("%s[*]", escaped_name);
884 object_property_add_child(owner, name_array, OBJECT(mr), &error_abort);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700885 object_unref(OBJECT(mr));
Peter Crosthwaite843ef732014-08-19 23:56:26 -0700886 g_free(name_array);
887 g_free(escaped_name);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700888 }
889}
890
Peter Crosthwaite409ddd02014-06-05 23:16:27 -0700891static void memory_region_get_addr(Object *obj, Visitor *v, void *opaque,
892 const char *name, Error **errp)
893{
894 MemoryRegion *mr = MEMORY_REGION(obj);
895 uint64_t value = mr->addr;
896
897 visit_type_uint64(v, &value, name, errp);
898}
899
900static void memory_region_get_container(Object *obj, Visitor *v, void *opaque,
901 const char *name, Error **errp)
902{
903 MemoryRegion *mr = MEMORY_REGION(obj);
904 gchar *path = (gchar *)"";
905
906 if (mr->container) {
907 path = object_get_canonical_path(OBJECT(mr->container));
908 }
909 visit_type_str(v, &path, name, errp);
910 if (mr->container) {
911 g_free(path);
912 }
913}
914
915static Object *memory_region_resolve_container(Object *obj, void *opaque,
916 const char *part)
917{
918 MemoryRegion *mr = MEMORY_REGION(obj);
919
920 return OBJECT(mr->container);
921}
922
Peter Crosthwaited33382d2014-06-05 23:17:01 -0700923static void memory_region_get_priority(Object *obj, Visitor *v, void *opaque,
924 const char *name, Error **errp)
925{
926 MemoryRegion *mr = MEMORY_REGION(obj);
927 int32_t value = mr->priority;
928
929 visit_type_int32(v, &value, name, errp);
930}
931
932static bool memory_region_get_may_overlap(Object *obj, Error **errp)
933{
934 MemoryRegion *mr = MEMORY_REGION(obj);
935
936 return mr->may_overlap;
937}
938
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -0700939static void memory_region_get_size(Object *obj, Visitor *v, void *opaque,
940 const char *name, Error **errp)
941{
942 MemoryRegion *mr = MEMORY_REGION(obj);
943 uint64_t value = memory_region_size(mr);
944
945 visit_type_uint64(v, &value, name, errp);
946}
947
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700948static void memory_region_initfn(Object *obj)
949{
950 MemoryRegion *mr = MEMORY_REGION(obj);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -0700951 ObjectProperty *op;
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -0700952
953 mr->ops = &unassigned_mem_ops;
954 mr->enabled = true;
955 mr->romd_mode = true;
956 mr->destructor = memory_region_destructor_none;
957 QTAILQ_INIT(&mr->subregions);
958 QTAILQ_INIT(&mr->coalesced);
Peter Crosthwaite409ddd02014-06-05 23:16:27 -0700959
960 op = object_property_add(OBJECT(mr), "container",
961 "link<" TYPE_MEMORY_REGION ">",
962 memory_region_get_container,
963 NULL, /* memory_region_set_container */
964 NULL, NULL, &error_abort);
965 op->resolve = memory_region_resolve_container;
966
967 object_property_add(OBJECT(mr), "addr", "uint64",
968 memory_region_get_addr,
969 NULL, /* memory_region_set_addr */
970 NULL, NULL, &error_abort);
Peter Crosthwaited33382d2014-06-05 23:17:01 -0700971 object_property_add(OBJECT(mr), "priority", "uint32",
972 memory_region_get_priority,
973 NULL, /* memory_region_set_priority */
974 NULL, NULL, &error_abort);
975 object_property_add_bool(OBJECT(mr), "may-overlap",
976 memory_region_get_may_overlap,
977 NULL, /* memory_region_set_may_overlap */
978 &error_abort);
Peter Crosthwaite52aef7b2014-06-05 23:17:35 -0700979 object_property_add(OBJECT(mr), "size", "uint64",
980 memory_region_get_size,
981 NULL, /* memory_region_set_size, */
982 NULL, NULL, &error_abort);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300983}
984
Paolo Bonzinib018ddf2013-05-24 14:48:38 +0200985static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
986 unsigned size)
987{
988#ifdef DEBUG_UNASSIGNED
989 printf("Unassigned mem read " TARGET_FMT_plx "\n", addr);
990#endif
Andreas Färber4917cf42013-05-27 05:17:50 +0200991 if (current_cpu != NULL) {
992 cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +0200993 }
Jan Kiszka68a74392013-09-02 18:43:31 +0200994 return 0;
Paolo Bonzinib018ddf2013-05-24 14:48:38 +0200995}
996
997static void unassigned_mem_write(void *opaque, hwaddr addr,
998 uint64_t val, unsigned size)
999{
1000#ifdef DEBUG_UNASSIGNED
1001 printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val);
1002#endif
Andreas Färber4917cf42013-05-27 05:17:50 +02001003 if (current_cpu != NULL) {
1004 cpu_unassigned_access(current_cpu, addr, true, false, 0, size);
Andreas Färberc658b942013-05-27 06:49:53 +02001005 }
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001006}
1007
Paolo Bonzinid1970632013-05-24 13:23:38 +02001008static bool unassigned_mem_accepts(void *opaque, hwaddr addr,
1009 unsigned size, bool is_write)
1010{
1011 return false;
1012}
1013
1014const MemoryRegionOps unassigned_mem_ops = {
1015 .valid.accepts = unassigned_mem_accepts,
1016 .endianness = DEVICE_NATIVE_ENDIAN,
1017};
1018
Paolo Bonzinid2702032013-05-24 11:55:06 +02001019bool memory_region_access_valid(MemoryRegion *mr,
1020 hwaddr addr,
1021 unsigned size,
1022 bool is_write)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001023{
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001024 int access_size_min, access_size_max;
1025 int access_size, i;
Avi Kivity897fa7c2011-11-13 13:05:27 +02001026
Avi Kivity093bc2c2011-07-26 14:26:01 +03001027 if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
1028 return false;
1029 }
1030
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001031 if (!mr->ops->valid.accepts) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001032 return true;
1033 }
1034
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001035 access_size_min = mr->ops->valid.min_access_size;
1036 if (!mr->ops->valid.min_access_size) {
1037 access_size_min = 1;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001038 }
Paolo Bonzinia014ed02013-05-24 17:48:52 +02001039
1040 access_size_max = mr->ops->valid.max_access_size;
1041 if (!mr->ops->valid.max_access_size) {
1042 access_size_max = 4;
1043 }
1044
1045 access_size = MAX(MIN(size, access_size_max), access_size_min);
1046 for (i = 0; i < size; i += access_size) {
1047 if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
1048 is_write)) {
1049 return false;
1050 }
1051 }
1052
Avi Kivity093bc2c2011-07-26 14:26:01 +03001053 return true;
1054}
1055
Avi Kivitya621f382012-01-02 13:12:08 +02001056static uint64_t memory_region_dispatch_read1(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001057 hwaddr addr,
Avi Kivitya621f382012-01-02 13:12:08 +02001058 unsigned size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001059{
Avi Kivity164a4dc2011-08-11 10:40:25 +03001060 uint64_t data = 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001061
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001062 if (mr->ops->read) {
1063 access_with_adjusted_size(addr, &data, size,
1064 mr->ops->impl.min_access_size,
1065 mr->ops->impl.max_access_size,
1066 memory_region_read_accessor, mr);
1067 } else {
1068 access_with_adjusted_size(addr, &data, size, 1, 4,
1069 memory_region_oldmmio_read_accessor, mr);
Avi Kivity74901c32011-07-26 14:26:10 +03001070 }
1071
Avi Kivity093bc2c2011-07-26 14:26:01 +03001072 return data;
1073}
1074
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001075static bool memory_region_dispatch_read(MemoryRegion *mr,
1076 hwaddr addr,
1077 uint64_t *pval,
1078 unsigned size)
Avi Kivitya621f382012-01-02 13:12:08 +02001079{
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001080 if (!memory_region_access_valid(mr, addr, size, false)) {
1081 *pval = unassigned_mem_read(mr, addr, size);
1082 return true;
1083 }
Avi Kivitya621f382012-01-02 13:12:08 +02001084
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001085 *pval = memory_region_dispatch_read1(mr, addr, size);
1086 adjust_endianness(mr, pval, size);
1087 return false;
Avi Kivitya621f382012-01-02 13:12:08 +02001088}
1089
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001090static bool memory_region_dispatch_write(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001091 hwaddr addr,
Avi Kivitya621f382012-01-02 13:12:08 +02001092 uint64_t data,
1093 unsigned size)
1094{
Avi Kivity897fa7c2011-11-13 13:05:27 +02001095 if (!memory_region_access_valid(mr, addr, size, true)) {
Paolo Bonzinib018ddf2013-05-24 14:48:38 +02001096 unassigned_mem_write(mr, addr, data, size);
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001097 return true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001098 }
1099
Avi Kivitya621f382012-01-02 13:12:08 +02001100 adjust_endianness(mr, &data, size);
1101
Paolo Bonzinice5d2f32013-05-24 17:45:48 +02001102 if (mr->ops->write) {
1103 access_with_adjusted_size(addr, &data, size,
1104 mr->ops->impl.min_access_size,
1105 mr->ops->impl.max_access_size,
1106 memory_region_write_accessor, mr);
1107 } else {
1108 access_with_adjusted_size(addr, &data, size, 1, 4,
1109 memory_region_oldmmio_write_accessor, mr);
Avi Kivity74901c32011-07-26 14:26:10 +03001110 }
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001111 return false;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001112}
1113
Avi Kivity093bc2c2011-07-26 14:26:01 +03001114void memory_region_init_io(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001115 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001116 const MemoryRegionOps *ops,
1117 void *opaque,
1118 const char *name,
1119 uint64_t size)
1120{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001121 memory_region_init(mr, owner, name, size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001122 mr->ops = ops;
1123 mr->opaque = opaque;
Avi Kivity14a3c102011-07-26 14:26:06 +03001124 mr->terminates = true;
Avi Kivity97161e12012-03-08 19:16:39 +02001125 mr->ram_addr = ~(ram_addr_t)0;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001126}
1127
1128void memory_region_init_ram(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001129 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001130 const char *name,
Hu Tao49946532014-09-09 13:27:55 +08001131 uint64_t size,
1132 Error **errp)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001133{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001134 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001135 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001136 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +03001137 mr->destructor = memory_region_destructor_ram;
Hu Tao49946532014-09-09 13:27:55 +08001138 mr->ram_addr = qemu_ram_alloc(size, mr, errp);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001139}
1140
Michael S. Tsirkin60786ef2014-11-17 00:24:36 +02001141void memory_region_init_resizeable_ram(MemoryRegion *mr,
1142 Object *owner,
1143 const char *name,
1144 uint64_t size,
1145 uint64_t max_size,
1146 void (*resized)(const char*,
1147 uint64_t length,
1148 void *host),
1149 Error **errp)
1150{
1151 memory_region_init(mr, owner, name, size);
1152 mr->ram = true;
1153 mr->terminates = true;
1154 mr->destructor = memory_region_destructor_ram;
1155 mr->ram_addr = qemu_ram_alloc_resizeable(size, max_size, resized, mr, errp);
1156}
1157
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001158#ifdef __linux__
1159void memory_region_init_ram_from_file(MemoryRegion *mr,
1160 struct Object *owner,
1161 const char *name,
1162 uint64_t size,
Paolo Bonzinidbcb8982014-06-10 19:15:24 +08001163 bool share,
Paolo Bonzini7f56e742014-05-14 17:43:20 +08001164 const char *path,
1165 Error **errp)
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001166{
1167 memory_region_init(mr, owner, name, size);
1168 mr->ram = true;
1169 mr->terminates = true;
1170 mr->destructor = memory_region_destructor_ram;
Paolo Bonzinidbcb8982014-06-10 19:15:24 +08001171 mr->ram_addr = qemu_ram_alloc_from_file(size, mr, share, path, errp);
Paolo Bonzini0b183fc2014-05-14 17:43:19 +08001172}
1173#endif
1174
Avi Kivity093bc2c2011-07-26 14:26:01 +03001175void memory_region_init_ram_ptr(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001176 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001177 const char *name,
1178 uint64_t size,
1179 void *ptr)
1180{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001181 memory_region_init(mr, owner, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +02001182 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +03001183 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +03001184 mr->destructor = memory_region_destructor_ram_from_ptr;
Hu Taoef701d72014-09-09 13:27:54 +08001185
1186 /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL. */
1187 assert(ptr != NULL);
1188 mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001189}
1190
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301191void memory_region_set_skip_dump(MemoryRegion *mr)
1192{
1193 mr->skip_dump = true;
1194}
1195
Avi Kivity093bc2c2011-07-26 14:26:01 +03001196void memory_region_init_alias(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001197 Object *owner,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001198 const char *name,
1199 MemoryRegion *orig,
Avi Kivitya8170e52012-10-23 12:30:10 +02001200 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001201 uint64_t size)
1202{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001203 memory_region_init(mr, owner, name, size);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001204 memory_region_ref(orig);
1205 mr->destructor = memory_region_destructor_alias;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001206 mr->alias = orig;
1207 mr->alias_offset = offset;
1208}
1209
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001210void memory_region_init_rom_device(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001211 Object *owner,
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001212 const MemoryRegionOps *ops,
Avi Kivity75f59412011-08-26 00:35:15 +03001213 void *opaque,
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001214 const char *name,
Hu Tao33e0eb52014-09-09 13:27:57 +08001215 uint64_t size,
1216 Error **errp)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001217{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001218 memory_region_init(mr, owner, name, size);
Avi Kivity7bc2b9c2011-08-25 14:56:14 +03001219 mr->ops = ops;
Avi Kivity75f59412011-08-26 00:35:15 +03001220 mr->opaque = opaque;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001221 mr->terminates = true;
Avi Kivity75c578d2012-01-02 15:40:52 +02001222 mr->rom_device = true;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001223 mr->destructor = memory_region_destructor_rom_device;
Hu Tao33e0eb52014-09-09 13:27:57 +08001224 mr->ram_addr = qemu_ram_alloc(size, mr, errp);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001225}
1226
Avi Kivity30951152012-10-30 13:47:46 +02001227void memory_region_init_iommu(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001228 Object *owner,
Avi Kivity30951152012-10-30 13:47:46 +02001229 const MemoryRegionIOMMUOps *ops,
1230 const char *name,
1231 uint64_t size)
1232{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001233 memory_region_init(mr, owner, name, size);
Avi Kivity30951152012-10-30 13:47:46 +02001234 mr->iommu_ops = ops,
1235 mr->terminates = true; /* then re-forwards */
David Gibson06866572013-05-14 19:13:56 +10001236 notifier_list_init(&mr->iommu_notify);
Avi Kivity30951152012-10-30 13:47:46 +02001237}
1238
Jan Kiszka1660e722011-10-23 16:01:19 +02001239void memory_region_init_reservation(MemoryRegion *mr,
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001240 Object *owner,
Jan Kiszka1660e722011-10-23 16:01:19 +02001241 const char *name,
1242 uint64_t size)
1243{
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -04001244 memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size);
Jan Kiszka1660e722011-10-23 16:01:19 +02001245}
1246
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001247static void memory_region_finalize(Object *obj)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001248{
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001249 MemoryRegion *mr = MEMORY_REGION(obj);
1250
Avi Kivity093bc2c2011-07-26 14:26:01 +03001251 assert(QTAILQ_EMPTY(&mr->subregions));
Avi Kivity545e92e2011-08-08 19:58:48 +03001252 mr->destructor(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001253 memory_region_clear_coalescing(mr);
Peter Maydell302fa282014-08-19 20:05:46 +01001254 g_free((char *)mr->name);
Anthony Liguori7267c092011-08-20 22:09:37 -05001255 g_free(mr->ioeventfds);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001256}
1257
Paolo Bonzini803c0812013-05-07 06:59:09 +02001258Object *memory_region_owner(MemoryRegion *mr)
1259{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001260 Object *obj = OBJECT(mr);
1261 return obj->parent;
Paolo Bonzini803c0812013-05-07 06:59:09 +02001262}
1263
Paolo Bonzini46637be2013-05-07 09:06:00 +02001264void memory_region_ref(MemoryRegion *mr)
1265{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001266 /* MMIO callbacks most likely will access data that belongs
1267 * to the owner, hence the need to ref/unref the owner whenever
1268 * the memory region is in use.
1269 *
1270 * The memory region is a child of its owner. As long as the
1271 * owner doesn't call unparent itself on the memory region,
1272 * ref-ing the owner will also keep the memory region alive.
1273 * Memory regions without an owner are supposed to never go away,
1274 * but we still ref/unref them for debugging purposes.
1275 */
1276 Object *obj = OBJECT(mr);
1277 if (obj && obj->parent) {
1278 object_ref(obj->parent);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001279 } else {
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001280 object_ref(obj);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001281 }
1282}
1283
1284void memory_region_unref(MemoryRegion *mr)
1285{
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001286 Object *obj = OBJECT(mr);
1287 if (obj && obj->parent) {
1288 object_unref(obj->parent);
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07001289 } else {
Paolo Bonzini22a893e2014-06-11 10:58:06 +02001290 object_unref(obj);
Paolo Bonzini46637be2013-05-07 09:06:00 +02001291 }
1292}
1293
Avi Kivity093bc2c2011-07-26 14:26:01 +03001294uint64_t memory_region_size(MemoryRegion *mr)
1295{
Avi Kivity08dafab2011-10-16 13:19:17 +02001296 if (int128_eq(mr->size, int128_2_64())) {
1297 return UINT64_MAX;
1298 }
1299 return int128_get64(mr->size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001300}
1301
Peter Crosthwaite5d546d42014-08-14 23:55:03 -07001302const char *memory_region_name(const MemoryRegion *mr)
Avi Kivity8991c792011-12-20 15:53:11 +02001303{
Peter Crosthwaited1dd32a2014-08-25 20:10:24 -07001304 if (!mr->name) {
1305 ((MemoryRegion *)mr)->name =
1306 object_get_canonical_path_component(OBJECT(mr));
1307 }
Peter Maydell302fa282014-08-19 20:05:46 +01001308 return mr->name;
Avi Kivity8991c792011-12-20 15:53:11 +02001309}
1310
Avi Kivity8ea92522011-12-08 15:58:43 +02001311bool memory_region_is_ram(MemoryRegion *mr)
1312{
1313 return mr->ram;
1314}
1315
Nikunj A Dadhaniae4dc3f52014-09-15 09:28:23 +05301316bool memory_region_is_skip_dump(MemoryRegion *mr)
1317{
1318 return mr->skip_dump;
1319}
1320
Avi Kivity55043ba2011-12-15 17:20:34 +02001321bool memory_region_is_logging(MemoryRegion *mr)
1322{
1323 return mr->dirty_log_mask;
1324}
1325
Avi Kivityce7923d2011-12-08 16:05:11 +02001326bool memory_region_is_rom(MemoryRegion *mr)
1327{
1328 return mr->ram && mr->readonly;
1329}
1330
Avi Kivity30951152012-10-30 13:47:46 +02001331bool memory_region_is_iommu(MemoryRegion *mr)
1332{
1333 return mr->iommu_ops;
1334}
1335
David Gibson06866572013-05-14 19:13:56 +10001336void memory_region_register_iommu_notifier(MemoryRegion *mr, Notifier *n)
1337{
1338 notifier_list_add(&mr->iommu_notify, n);
1339}
1340
1341void memory_region_unregister_iommu_notifier(Notifier *n)
1342{
1343 notifier_remove(n);
1344}
1345
1346void memory_region_notify_iommu(MemoryRegion *mr,
1347 IOMMUTLBEntry entry)
1348{
1349 assert(memory_region_is_iommu(mr));
1350 notifier_list_notify(&mr->iommu_notify, &entry);
1351}
1352
Avi Kivity093bc2c2011-07-26 14:26:01 +03001353void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
1354{
Avi Kivity5a583342011-07-26 14:26:02 +03001355 uint8_t mask = 1 << client;
1356
Jan Kiszka59023ef2012-08-23 13:02:30 +02001357 memory_region_transaction_begin();
Avi Kivity5a583342011-07-26 14:26:02 +03001358 mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
Jan Kiszka22bde712012-11-05 16:45:56 +01001359 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001360 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001361}
1362
Avi Kivitya8170e52012-10-23 12:30:10 +02001363bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
1364 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001365{
Avi Kivity14a3c102011-07-26 14:26:06 +03001366 assert(mr->terminates);
Juan Quintela52159192013-10-08 12:44:04 +02001367 return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001368}
1369
Avi Kivitya8170e52012-10-23 12:30:10 +02001370void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
1371 hwaddr size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001372{
Avi Kivity14a3c102011-07-26 14:26:06 +03001373 assert(mr->terminates);
Juan Quintela75218e72013-10-08 12:31:54 +02001374 cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001375}
1376
Juan Quintela6c279db2012-10-17 20:24:28 +02001377bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
1378 hwaddr size, unsigned client)
1379{
1380 bool ret;
1381 assert(mr->terminates);
Juan Quintela52159192013-10-08 12:44:04 +02001382 ret = cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
Juan Quintela6c279db2012-10-17 20:24:28 +02001383 if (ret) {
Juan Quintelaa2f4d5b2013-10-10 11:49:53 +02001384 cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client);
Juan Quintela6c279db2012-10-17 20:24:28 +02001385 }
1386 return ret;
1387}
1388
1389
Avi Kivity093bc2c2011-07-26 14:26:01 +03001390void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
1391{
Avi Kivity0d673e32012-10-02 15:28:50 +02001392 AddressSpace *as;
Avi Kivity5a583342011-07-26 14:26:02 +03001393 FlatRange *fr;
1394
Avi Kivity0d673e32012-10-02 15:28:50 +02001395 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Paolo Bonzini856d7242013-05-06 11:57:21 +02001396 FlatView *view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001397 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity0d673e32012-10-02 15:28:50 +02001398 if (fr->mr == mr) {
1399 MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
1400 }
Avi Kivity5a583342011-07-26 14:26:02 +03001401 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001402 flatview_unref(view);
Avi Kivity5a583342011-07-26 14:26:02 +03001403 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001404}
1405
1406void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
1407{
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001408 if (mr->readonly != readonly) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02001409 memory_region_transaction_begin();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001410 mr->readonly = readonly;
Jan Kiszka22bde712012-11-05 16:45:56 +01001411 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001412 memory_region_transaction_commit();
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001413 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001414}
1415
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001416void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001417{
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001418 if (mr->romd_mode != romd_mode) {
Jan Kiszka59023ef2012-08-23 13:02:30 +02001419 memory_region_transaction_begin();
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02001420 mr->romd_mode = romd_mode;
Jan Kiszka22bde712012-11-05 16:45:56 +01001421 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001422 memory_region_transaction_commit();
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001423 }
1424}
1425
Avi Kivitya8170e52012-10-23 12:30:10 +02001426void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
1427 hwaddr size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001428{
Avi Kivity14a3c102011-07-26 14:26:06 +03001429 assert(mr->terminates);
Juan Quintelaa2f4d5b2013-10-10 11:49:53 +02001430 cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001431}
1432
Paolo Bonzinia35ba7b2014-06-10 19:15:23 +08001433int memory_region_get_fd(MemoryRegion *mr)
1434{
1435 if (mr->alias) {
1436 return memory_region_get_fd(mr->alias);
1437 }
1438
1439 assert(mr->terminates);
1440
1441 return qemu_get_ram_fd(mr->ram_addr & TARGET_PAGE_MASK);
1442}
1443
Avi Kivity093bc2c2011-07-26 14:26:01 +03001444void *memory_region_get_ram_ptr(MemoryRegion *mr)
1445{
1446 if (mr->alias) {
1447 return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
1448 }
1449
Avi Kivity14a3c102011-07-26 14:26:06 +03001450 assert(mr->terminates);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001451
Jan Kiszka021d26d2011-08-30 00:38:24 +02001452 return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001453}
1454
Avi Kivity0d673e32012-10-02 15:28:50 +02001455static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001456{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001457 FlatView *view;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001458 FlatRange *fr;
1459 CoalescedMemoryRange *cmr;
1460 AddrRange tmp;
Avi Kivity95d29942012-10-02 18:21:54 +02001461 MemoryRegionSection section;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001462
Paolo Bonzini856d7242013-05-06 11:57:21 +02001463 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001464 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001465 if (fr->mr == mr) {
Avi Kivity95d29942012-10-02 18:21:54 +02001466 section = (MemoryRegionSection) {
Avi Kivityf6790af2012-10-02 20:13:51 +02001467 .address_space = as,
Avi Kivity95d29942012-10-02 18:21:54 +02001468 .offset_within_address_space = int128_get64(fr->addr.start),
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001469 .size = fr->addr.size,
Avi Kivity95d29942012-10-02 18:21:54 +02001470 };
1471
1472 MEMORY_LISTENER_CALL(coalesced_mmio_del, Reverse, &section,
1473 int128_get64(fr->addr.start),
1474 int128_get64(fr->addr.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001475 QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
1476 tmp = addrrange_shift(cmr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001477 int128_sub(fr->addr.start,
1478 int128_make64(fr->offset_in_region)));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001479 if (!addrrange_intersects(tmp, fr->addr)) {
1480 continue;
1481 }
1482 tmp = addrrange_intersection(tmp, fr->addr);
Avi Kivity95d29942012-10-02 18:21:54 +02001483 MEMORY_LISTENER_CALL(coalesced_mmio_add, Forward, &section,
1484 int128_get64(tmp.start),
1485 int128_get64(tmp.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001486 }
1487 }
1488 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001489 flatview_unref(view);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001490}
1491
Avi Kivity0d673e32012-10-02 15:28:50 +02001492static void memory_region_update_coalesced_range(MemoryRegion *mr)
1493{
1494 AddressSpace *as;
1495
1496 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1497 memory_region_update_coalesced_range_as(mr, as);
1498 }
1499}
1500
Avi Kivity093bc2c2011-07-26 14:26:01 +03001501void memory_region_set_coalescing(MemoryRegion *mr)
1502{
1503 memory_region_clear_coalescing(mr);
Avi Kivity08dafab2011-10-16 13:19:17 +02001504 memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001505}
1506
1507void memory_region_add_coalescing(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001508 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001509 uint64_t size)
1510{
Anthony Liguori7267c092011-08-20 22:09:37 -05001511 CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001512
Avi Kivity08dafab2011-10-16 13:19:17 +02001513 cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001514 QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
1515 memory_region_update_coalesced_range(mr);
Jan Kiszkad4105152012-08-23 13:02:29 +02001516 memory_region_set_flush_coalesced(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001517}
1518
1519void memory_region_clear_coalescing(MemoryRegion *mr)
1520{
1521 CoalescedMemoryRange *cmr;
Fam Zhengab5b3db2014-06-13 14:34:41 +08001522 bool updated = false;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001523
Jan Kiszkad4105152012-08-23 13:02:29 +02001524 qemu_flush_coalesced_mmio_buffer();
1525 mr->flush_coalesced_mmio = false;
1526
Avi Kivity093bc2c2011-07-26 14:26:01 +03001527 while (!QTAILQ_EMPTY(&mr->coalesced)) {
1528 cmr = QTAILQ_FIRST(&mr->coalesced);
1529 QTAILQ_REMOVE(&mr->coalesced, cmr, link);
Anthony Liguori7267c092011-08-20 22:09:37 -05001530 g_free(cmr);
Fam Zhengab5b3db2014-06-13 14:34:41 +08001531 updated = true;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001532 }
Fam Zhengab5b3db2014-06-13 14:34:41 +08001533
1534 if (updated) {
1535 memory_region_update_coalesced_range(mr);
1536 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001537}
1538
Jan Kiszkad4105152012-08-23 13:02:29 +02001539void memory_region_set_flush_coalesced(MemoryRegion *mr)
1540{
1541 mr->flush_coalesced_mmio = true;
1542}
1543
1544void memory_region_clear_flush_coalesced(MemoryRegion *mr)
1545{
1546 qemu_flush_coalesced_mmio_buffer();
1547 if (QTAILQ_EMPTY(&mr->coalesced)) {
1548 mr->flush_coalesced_mmio = false;
1549 }
1550}
1551
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001552void memory_region_add_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001553 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001554 unsigned size,
1555 bool match_data,
1556 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001557 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001558{
1559 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02001560 .addr.start = int128_make64(addr),
1561 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001562 .match_data = match_data,
1563 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001564 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001565 };
1566 unsigned i;
1567
Alexander Graf28f362b2012-10-15 20:30:28 +02001568 adjust_endianness(mr, &mrfd.data, size);
Jan Kiszka59023ef2012-08-23 13:02:30 +02001569 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001570 for (i = 0; i < mr->ioeventfd_nb; ++i) {
1571 if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
1572 break;
1573 }
1574 }
1575 ++mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05001576 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001577 sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
1578 memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
1579 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
1580 mr->ioeventfds[i] = mrfd;
Gonglei4dc56152014-05-08 11:47:32 +08001581 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001582 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001583}
1584
1585void memory_region_del_eventfd(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001586 hwaddr addr,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001587 unsigned size,
1588 bool match_data,
1589 uint64_t data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001590 EventNotifier *e)
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001591{
1592 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02001593 .addr.start = int128_make64(addr),
1594 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001595 .match_data = match_data,
1596 .data = data,
Paolo Bonzini753d5e12012-07-05 17:16:27 +02001597 .e = e,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001598 };
1599 unsigned i;
1600
Alexander Graf28f362b2012-10-15 20:30:28 +02001601 adjust_endianness(mr, &mrfd.data, size);
Jan Kiszka59023ef2012-08-23 13:02:30 +02001602 memory_region_transaction_begin();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001603 for (i = 0; i < mr->ioeventfd_nb; ++i) {
1604 if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
1605 break;
1606 }
1607 }
1608 assert(i != mr->ioeventfd_nb);
1609 memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
1610 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
1611 --mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05001612 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001613 sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
Gonglei4dc56152014-05-08 11:47:32 +08001614 ioeventfd_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001615 memory_region_transaction_commit();
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001616}
1617
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001618static void memory_region_update_container_subregions(MemoryRegion *subregion)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001619{
Peter Crosthwaite05987012014-06-05 23:14:44 -07001620 hwaddr offset = subregion->addr;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001621 MemoryRegion *mr = subregion->container;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001622 MemoryRegion *other;
1623
Jan Kiszka59023ef2012-08-23 13:02:30 +02001624 memory_region_transaction_begin();
1625
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001626 memory_region_ref(subregion);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001627 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
1628 if (subregion->may_overlap || other->may_overlap) {
1629 continue;
1630 }
Hu Tao2c7cfd62013-03-15 14:32:01 +08001631 if (int128_ge(int128_make64(offset),
Avi Kivity08dafab2011-10-16 13:19:17 +02001632 int128_add(int128_make64(other->addr), other->size))
1633 || int128_le(int128_add(int128_make64(offset), subregion->size),
1634 int128_make64(other->addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001635 continue;
1636 }
Anthony Liguoria5e1cbc2011-08-22 11:14:56 -05001637#if 0
Michael Walle860329b2011-09-15 23:16:49 +02001638 printf("warning: subregion collision %llx/%llx (%s) "
1639 "vs %llx/%llx (%s)\n",
Avi Kivity093bc2c2011-07-26 14:26:01 +03001640 (unsigned long long)offset,
Avi Kivity08dafab2011-10-16 13:19:17 +02001641 (unsigned long long)int128_get64(subregion->size),
Michael Walle860329b2011-09-15 23:16:49 +02001642 subregion->name,
1643 (unsigned long long)other->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001644 (unsigned long long)int128_get64(other->size),
Michael Walle860329b2011-09-15 23:16:49 +02001645 other->name);
Anthony Liguoria5e1cbc2011-08-22 11:14:56 -05001646#endif
Avi Kivity093bc2c2011-07-26 14:26:01 +03001647 }
1648 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
1649 if (subregion->priority >= other->priority) {
1650 QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
1651 goto done;
1652 }
1653 }
1654 QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
1655done:
Jan Kiszka22bde712012-11-05 16:45:56 +01001656 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001657 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001658}
1659
Peter Crosthwaite05987012014-06-05 23:14:44 -07001660static void memory_region_add_subregion_common(MemoryRegion *mr,
1661 hwaddr offset,
1662 MemoryRegion *subregion)
1663{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001664 assert(!subregion->container);
1665 subregion->container = mr;
Peter Crosthwaite05987012014-06-05 23:14:44 -07001666 subregion->addr = offset;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001667 memory_region_update_container_subregions(subregion);
Peter Crosthwaite05987012014-06-05 23:14:44 -07001668}
Avi Kivity093bc2c2011-07-26 14:26:01 +03001669
1670void memory_region_add_subregion(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001671 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001672 MemoryRegion *subregion)
1673{
1674 subregion->may_overlap = false;
1675 subregion->priority = 0;
1676 memory_region_add_subregion_common(mr, offset, subregion);
1677}
1678
1679void memory_region_add_subregion_overlap(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001680 hwaddr offset,
Avi Kivity093bc2c2011-07-26 14:26:01 +03001681 MemoryRegion *subregion,
Marcel Apfelbauma1ff8ae2013-09-16 11:21:14 +03001682 int priority)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001683{
1684 subregion->may_overlap = true;
1685 subregion->priority = priority;
1686 memory_region_add_subregion_common(mr, offset, subregion);
1687}
1688
1689void memory_region_del_subregion(MemoryRegion *mr,
1690 MemoryRegion *subregion)
1691{
Jan Kiszka59023ef2012-08-23 13:02:30 +02001692 memory_region_transaction_begin();
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001693 assert(subregion->container == mr);
1694 subregion->container = NULL;
Avi Kivity093bc2c2011-07-26 14:26:01 +03001695 QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001696 memory_region_unref(subregion);
Jan Kiszka22bde712012-11-05 16:45:56 +01001697 memory_region_update_pending |= mr->enabled && subregion->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001698 memory_region_transaction_commit();
Avi Kivity6bba19b2011-09-14 11:54:58 +03001699}
1700
1701void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
1702{
1703 if (enabled == mr->enabled) {
1704 return;
1705 }
Jan Kiszka59023ef2012-08-23 13:02:30 +02001706 memory_region_transaction_begin();
Avi Kivity6bba19b2011-09-14 11:54:58 +03001707 mr->enabled = enabled;
Jan Kiszka22bde712012-11-05 16:45:56 +01001708 memory_region_update_pending = true;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001709 memory_region_transaction_commit();
Avi Kivity093bc2c2011-07-26 14:26:01 +03001710}
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001711
Michael S. Tsirkine7af4c62014-12-16 11:21:23 +02001712void memory_region_set_size(MemoryRegion *mr, uint64_t size)
1713{
1714 Int128 s = int128_make64(size);
1715
1716 if (size == UINT64_MAX) {
1717 s = int128_2_64();
1718 }
1719 if (int128_eq(s, mr->size)) {
1720 return;
1721 }
1722 memory_region_transaction_begin();
1723 mr->size = s;
1724 memory_region_update_pending = true;
1725 memory_region_transaction_commit();
1726}
1727
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001728static void memory_region_readd_subregion(MemoryRegion *mr)
Avi Kivity2282e1a2011-09-14 12:10:12 +03001729{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001730 MemoryRegion *container = mr->container;
Avi Kivity2282e1a2011-09-14 12:10:12 +03001731
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001732 if (container) {
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001733 memory_region_transaction_begin();
1734 memory_region_ref(mr);
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001735 memory_region_del_subregion(container, mr);
1736 mr->container = container;
1737 memory_region_update_container_subregions(mr);
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001738 memory_region_unref(mr);
1739 memory_region_transaction_commit();
Avi Kivity2282e1a2011-09-14 12:10:12 +03001740 }
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001741}
Avi Kivity2282e1a2011-09-14 12:10:12 +03001742
Peter Crosthwaite67891b82014-06-05 23:15:18 -07001743void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
1744{
1745 if (addr != mr->addr) {
1746 mr->addr = addr;
1747 memory_region_readd_subregion(mr);
1748 }
Avi Kivity2282e1a2011-09-14 12:10:12 +03001749}
1750
Avi Kivitya8170e52012-10-23 12:30:10 +02001751void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
Avi Kivity47033592011-12-04 19:16:50 +02001752{
Avi Kivity47033592011-12-04 19:16:50 +02001753 assert(mr->alias);
Avi Kivity47033592011-12-04 19:16:50 +02001754
Jan Kiszka59023ef2012-08-23 13:02:30 +02001755 if (offset == mr->alias_offset) {
Avi Kivity47033592011-12-04 19:16:50 +02001756 return;
1757 }
1758
Jan Kiszka59023ef2012-08-23 13:02:30 +02001759 memory_region_transaction_begin();
1760 mr->alias_offset = offset;
Jan Kiszka22bde712012-11-05 16:45:56 +01001761 memory_region_update_pending |= mr->enabled;
Jan Kiszka59023ef2012-08-23 13:02:30 +02001762 memory_region_transaction_commit();
Avi Kivity47033592011-12-04 19:16:50 +02001763}
1764
Avi Kivitye34911c2011-12-19 12:06:23 +02001765ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
1766{
Avi Kivitye34911c2011-12-19 12:06:23 +02001767 return mr->ram_addr;
1768}
1769
Igor Mammedova2b257d2014-10-31 16:38:37 +00001770uint64_t memory_region_get_alignment(const MemoryRegion *mr)
1771{
1772 return mr->align;
1773}
1774
Avi Kivitye2177952011-12-08 15:00:18 +02001775static int cmp_flatrange_addr(const void *addr_, const void *fr_)
1776{
1777 const AddrRange *addr = addr_;
1778 const FlatRange *fr = fr_;
1779
1780 if (int128_le(addrrange_end(*addr), fr->addr.start)) {
1781 return -1;
1782 } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
1783 return 1;
1784 }
1785 return 0;
1786}
1787
Paolo Bonzini99e86342013-05-06 10:26:13 +02001788static FlatRange *flatview_lookup(FlatView *view, AddrRange addr)
Avi Kivitye2177952011-12-08 15:00:18 +02001789{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001790 return bsearch(&addr, view->ranges, view->nr,
Avi Kivitye2177952011-12-08 15:00:18 +02001791 sizeof(FlatRange), cmp_flatrange_addr);
1792}
1793
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001794bool memory_region_present(MemoryRegion *container, hwaddr addr)
Paolo Bonzini3ce10902013-07-02 13:40:48 +02001795{
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001796 MemoryRegion *mr = memory_region_find(container, addr, 1).mr;
1797 if (!mr || (mr == container)) {
Paolo Bonzini3ce10902013-07-02 13:40:48 +02001798 return false;
1799 }
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001800 memory_region_unref(mr);
Paolo Bonzini3ce10902013-07-02 13:40:48 +02001801 return true;
1802}
1803
Igor Mammedoveed2bac2014-06-02 15:25:06 +02001804bool memory_region_is_mapped(MemoryRegion *mr)
1805{
1806 return mr->container ? true : false;
1807}
1808
Paolo Bonzini73034e92013-05-07 15:48:28 +02001809MemoryRegionSection memory_region_find(MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +02001810 hwaddr addr, uint64_t size)
Avi Kivitye2177952011-12-08 15:00:18 +02001811{
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001812 MemoryRegionSection ret = { .mr = NULL };
Paolo Bonzini73034e92013-05-07 15:48:28 +02001813 MemoryRegion *root;
1814 AddressSpace *as;
1815 AddrRange range;
Paolo Bonzini99e86342013-05-06 10:26:13 +02001816 FlatView *view;
Paolo Bonzini73034e92013-05-07 15:48:28 +02001817 FlatRange *fr;
Avi Kivitye2177952011-12-08 15:00:18 +02001818
Paolo Bonzini73034e92013-05-07 15:48:28 +02001819 addr += mr->addr;
Paolo Bonzinifeca4ac2014-06-11 11:18:09 +02001820 for (root = mr; root->container; ) {
1821 root = root->container;
Paolo Bonzini73034e92013-05-07 15:48:28 +02001822 addr += root->addr;
1823 }
1824
1825 as = memory_region_to_address_space(root);
Igor Mammedoveed2bac2014-06-02 15:25:06 +02001826 if (!as) {
1827 return ret;
1828 }
Paolo Bonzini73034e92013-05-07 15:48:28 +02001829 range = addrrange_make(int128_make64(addr), int128_make64(size));
Paolo Bonzini99e86342013-05-06 10:26:13 +02001830
Paolo Bonzini2b647662013-05-17 12:40:44 +02001831 rcu_read_lock();
1832 view = atomic_rcu_read(&as->current_map);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001833 fr = flatview_lookup(view, range);
Avi Kivitye2177952011-12-08 15:00:18 +02001834 if (!fr) {
Paolo Bonzini2b647662013-05-17 12:40:44 +02001835 goto out;
Avi Kivitye2177952011-12-08 15:00:18 +02001836 }
1837
Paolo Bonzini99e86342013-05-06 10:26:13 +02001838 while (fr > view->ranges && addrrange_intersects(fr[-1].addr, range)) {
Avi Kivitye2177952011-12-08 15:00:18 +02001839 --fr;
1840 }
1841
1842 ret.mr = fr->mr;
Paolo Bonzini73034e92013-05-07 15:48:28 +02001843 ret.address_space = as;
Avi Kivitye2177952011-12-08 15:00:18 +02001844 range = addrrange_intersection(range, fr->addr);
1845 ret.offset_within_region = fr->offset_in_region;
1846 ret.offset_within_region += int128_get64(int128_sub(range.start,
1847 fr->addr.start));
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001848 ret.size = range.size;
Avi Kivitye2177952011-12-08 15:00:18 +02001849 ret.offset_within_address_space = int128_get64(range.start);
Avi Kivity7a8499e2012-02-08 17:01:23 +02001850 ret.readonly = fr->readonly;
Paolo Bonzinidfde4e62013-05-06 10:46:11 +02001851 memory_region_ref(ret.mr);
Paolo Bonzini2b647662013-05-17 12:40:44 +02001852out:
1853 rcu_read_unlock();
Avi Kivitye2177952011-12-08 15:00:18 +02001854 return ret;
1855}
1856
Paolo Bonzini1d671362013-04-24 10:46:55 +02001857void address_space_sync_dirty_bitmap(AddressSpace *as)
Avi Kivity86e775c2011-12-15 16:24:49 +02001858{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001859 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02001860 FlatRange *fr;
1861
Paolo Bonzini856d7242013-05-06 11:57:21 +02001862 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001863 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity72e22d22012-02-08 15:05:50 +02001864 MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
Avi Kivity7664e802011-12-11 14:47:25 +02001865 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001866 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02001867}
1868
1869void memory_global_dirty_log_start(void)
1870{
Avi Kivity7664e802011-12-11 14:47:25 +02001871 global_dirty_log = true;
Avi Kivity7376e582012-02-08 21:05:17 +02001872 MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
Avi Kivity7664e802011-12-11 14:47:25 +02001873}
1874
1875void memory_global_dirty_log_stop(void)
1876{
Avi Kivity7664e802011-12-11 14:47:25 +02001877 global_dirty_log = false;
Avi Kivity7376e582012-02-08 21:05:17 +02001878 MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
Avi Kivity7664e802011-12-11 14:47:25 +02001879}
1880
1881static void listener_add_address_space(MemoryListener *listener,
1882 AddressSpace *as)
1883{
Paolo Bonzini99e86342013-05-06 10:26:13 +02001884 FlatView *view;
Avi Kivity7664e802011-12-11 14:47:25 +02001885 FlatRange *fr;
1886
Julien Grall221b3a32012-04-04 15:15:41 +01001887 if (listener->address_space_filter
Avi Kivityf6790af2012-10-02 20:13:51 +02001888 && listener->address_space_filter != as) {
Julien Grall221b3a32012-04-04 15:15:41 +01001889 return;
1890 }
1891
Avi Kivity7664e802011-12-11 14:47:25 +02001892 if (global_dirty_log) {
Avi Kivity975aefe2012-10-02 16:39:57 +02001893 if (listener->log_global_start) {
1894 listener->log_global_start(listener);
1895 }
Avi Kivity7664e802011-12-11 14:47:25 +02001896 }
Avi Kivity975aefe2012-10-02 16:39:57 +02001897
Paolo Bonzini856d7242013-05-06 11:57:21 +02001898 view = address_space_get_flatview(as);
Paolo Bonzini99e86342013-05-06 10:26:13 +02001899 FOR_EACH_FLAT_RANGE(fr, view) {
Avi Kivity7664e802011-12-11 14:47:25 +02001900 MemoryRegionSection section = {
1901 .mr = fr->mr,
Avi Kivityf6790af2012-10-02 20:13:51 +02001902 .address_space = as,
Avi Kivity7664e802011-12-11 14:47:25 +02001903 .offset_within_region = fr->offset_in_region,
Paolo Bonzini052e87b2013-05-27 10:08:27 +02001904 .size = fr->addr.size,
Avi Kivity7664e802011-12-11 14:47:25 +02001905 .offset_within_address_space = int128_get64(fr->addr.start),
Avi Kivity7a8499e2012-02-08 17:01:23 +02001906 .readonly = fr->readonly,
Avi Kivity7664e802011-12-11 14:47:25 +02001907 };
Avi Kivity975aefe2012-10-02 16:39:57 +02001908 if (listener->region_add) {
1909 listener->region_add(listener, &section);
1910 }
Avi Kivity7664e802011-12-11 14:47:25 +02001911 }
Paolo Bonzini856d7242013-05-06 11:57:21 +02001912 flatview_unref(view);
Avi Kivity7664e802011-12-11 14:47:25 +02001913}
1914
Avi Kivityf6790af2012-10-02 20:13:51 +02001915void memory_listener_register(MemoryListener *listener, AddressSpace *filter)
Avi Kivity7664e802011-12-11 14:47:25 +02001916{
Avi Kivity72e22d22012-02-08 15:05:50 +02001917 MemoryListener *other = NULL;
Avi Kivity0d673e32012-10-02 15:28:50 +02001918 AddressSpace *as;
Avi Kivity72e22d22012-02-08 15:05:50 +02001919
Avi Kivity7376e582012-02-08 21:05:17 +02001920 listener->address_space_filter = filter;
Avi Kivity72e22d22012-02-08 15:05:50 +02001921 if (QTAILQ_EMPTY(&memory_listeners)
1922 || listener->priority >= QTAILQ_LAST(&memory_listeners,
1923 memory_listeners)->priority) {
1924 QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
1925 } else {
1926 QTAILQ_FOREACH(other, &memory_listeners, link) {
1927 if (listener->priority < other->priority) {
1928 break;
1929 }
1930 }
1931 QTAILQ_INSERT_BEFORE(other, listener, link);
1932 }
Avi Kivity0d673e32012-10-02 15:28:50 +02001933
1934 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
1935 listener_add_address_space(listener, as);
1936 }
Avi Kivity7664e802011-12-11 14:47:25 +02001937}
1938
1939void memory_listener_unregister(MemoryListener *listener)
1940{
Avi Kivity72e22d22012-02-08 15:05:50 +02001941 QTAILQ_REMOVE(&memory_listeners, listener, link);
Avi Kivity86e775c2011-12-15 16:24:49 +02001942}
Avi Kivitye2177952011-12-08 15:00:18 +02001943
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00001944void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001945{
Paolo Bonziniac951902015-02-11 15:21:04 +01001946 memory_region_ref(root);
Jan Kiszka59023ef2012-08-23 13:02:30 +02001947 memory_region_transaction_begin();
Avi Kivity8786db72012-10-02 13:53:41 +02001948 as->root = root;
1949 as->current_map = g_new(FlatView, 1);
1950 flatview_init(as->current_map);
Avi Kivity4c19eb72012-10-30 13:47:44 +02001951 as->ioeventfd_nb = 0;
1952 as->ioeventfds = NULL;
Avi Kivity0d673e32012-10-02 15:28:50 +02001953 QTAILQ_INSERT_TAIL(&address_spaces, as, address_spaces_link);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00001954 as->name = g_strdup(name ? name : "anonymous");
Avi Kivityac1970f2012-10-03 16:22:53 +02001955 address_space_init_dispatch(as);
Paolo Bonzinif43793c2013-04-16 15:39:51 +02001956 memory_region_update_pending |= root->enabled;
1957 memory_region_transaction_commit();
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001958}
Avi Kivity658b2222011-07-26 14:26:08 +03001959
Paolo Bonzini374f2982013-05-17 12:37:03 +02001960static void do_address_space_destroy(AddressSpace *as)
Avi Kivity83f3c252012-10-07 12:59:55 +02001961{
David Gibson078c44f2014-05-30 12:59:00 -06001962 MemoryListener *listener;
1963
Avi Kivity83f3c252012-10-07 12:59:55 +02001964 address_space_destroy_dispatch(as);
David Gibson078c44f2014-05-30 12:59:00 -06001965
1966 QTAILQ_FOREACH(listener, &memory_listeners, link) {
1967 assert(listener->address_space_filter != as);
1968 }
1969
Paolo Bonzini856d7242013-05-06 11:57:21 +02001970 flatview_unref(as->current_map);
Alexey Kardashevskiy7dca8042013-04-29 16:25:51 +00001971 g_free(as->name);
Avi Kivity4c19eb72012-10-30 13:47:44 +02001972 g_free(as->ioeventfds);
Paolo Bonziniac951902015-02-11 15:21:04 +01001973 memory_region_unref(as->root);
Avi Kivity83f3c252012-10-07 12:59:55 +02001974}
1975
Paolo Bonzini374f2982013-05-17 12:37:03 +02001976void address_space_destroy(AddressSpace *as)
1977{
Paolo Bonziniac951902015-02-11 15:21:04 +01001978 MemoryRegion *root = as->root;
1979
Paolo Bonzini374f2982013-05-17 12:37:03 +02001980 /* Flush out anything from MemoryListeners listening in on this */
1981 memory_region_transaction_begin();
1982 as->root = NULL;
1983 memory_region_transaction_commit();
1984 QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
Paolo Bonzini6e48e8f2015-02-10 10:25:44 -07001985 address_space_unregister(as);
Paolo Bonzini374f2982013-05-17 12:37:03 +02001986
1987 /* At this point, as->dispatch and as->current_map are dummy
1988 * entries that the guest should never use. Wait for the old
1989 * values to expire before freeing the data.
1990 */
Paolo Bonziniac951902015-02-11 15:21:04 +01001991 as->root = root;
Paolo Bonzini374f2982013-05-17 12:37:03 +02001992 call_rcu(as, do_address_space_destroy, rcu);
1993}
1994
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001995bool io_mem_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, unsigned size)
Avi Kivityacbbec52011-11-21 12:27:03 +02001996{
Paolo Bonzini791af8c2013-05-24 16:10:39 +02001997 return memory_region_dispatch_read(mr, addr, pval, size);
Avi Kivityacbbec52011-11-21 12:27:03 +02001998}
1999
Paolo Bonzini791af8c2013-05-24 16:10:39 +02002000bool io_mem_write(MemoryRegion *mr, hwaddr addr,
Avi Kivityacbbec52011-11-21 12:27:03 +02002001 uint64_t val, unsigned size)
2002{
Paolo Bonzini791af8c2013-05-24 16:10:39 +02002003 return memory_region_dispatch_write(mr, addr, val, size);
Avi Kivityacbbec52011-11-21 12:27:03 +02002004}
2005
Blue Swirl314e2982011-09-11 20:22:05 +00002006typedef struct MemoryRegionList MemoryRegionList;
2007
2008struct MemoryRegionList {
2009 const MemoryRegion *mr;
Blue Swirl314e2982011-09-11 20:22:05 +00002010 QTAILQ_ENTRY(MemoryRegionList) queue;
2011};
2012
2013typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
2014
2015static void mtree_print_mr(fprintf_function mon_printf, void *f,
2016 const MemoryRegion *mr, unsigned int level,
Avi Kivitya8170e52012-10-23 12:30:10 +02002017 hwaddr base,
Jan Kiszka9479c572011-09-27 15:00:41 +02002018 MemoryRegionListHead *alias_print_queue)
Blue Swirl314e2982011-09-11 20:22:05 +00002019{
Jan Kiszka9479c572011-09-27 15:00:41 +02002020 MemoryRegionList *new_ml, *ml, *next_ml;
2021 MemoryRegionListHead submr_print_queue;
Blue Swirl314e2982011-09-11 20:22:05 +00002022 const MemoryRegion *submr;
2023 unsigned int i;
2024
Jan Kiszka7ea692b2012-10-31 10:49:02 +01002025 if (!mr || !mr->enabled) {
Blue Swirl314e2982011-09-11 20:22:05 +00002026 return;
2027 }
2028
2029 for (i = 0; i < level; i++) {
2030 mon_printf(f, " ");
2031 }
2032
2033 if (mr->alias) {
2034 MemoryRegionList *ml;
2035 bool found = false;
2036
2037 /* check if the alias is already in the queue */
Jan Kiszka9479c572011-09-27 15:00:41 +02002038 QTAILQ_FOREACH(ml, alias_print_queue, queue) {
Paolo Bonzinif54bb152013-12-11 12:51:46 +01002039 if (ml->mr == mr->alias) {
Blue Swirl314e2982011-09-11 20:22:05 +00002040 found = true;
2041 }
2042 }
2043
2044 if (!found) {
2045 ml = g_new(MemoryRegionList, 1);
2046 ml->mr = mr->alias;
Jan Kiszka9479c572011-09-27 15:00:41 +02002047 QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue);
Blue Swirl314e2982011-09-11 20:22:05 +00002048 }
Jan Kiszka4896d742012-02-04 16:25:42 +01002049 mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
2050 " (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
2051 "-" TARGET_FMT_plx "\n",
Blue Swirl314e2982011-09-11 20:22:05 +00002052 base + mr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02002053 base + mr->addr
Alex Williamsonfd1d9922013-07-19 12:42:12 -06002054 + (int128_nz(mr->size) ?
2055 (hwaddr)int128_get64(int128_sub(mr->size,
2056 int128_one())) : 0),
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002057 mr->priority,
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002058 mr->romd_mode ? 'R' : '-',
2059 !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
2060 : '-',
Peter Crosthwaite3fb18b42014-08-14 23:55:36 -07002061 memory_region_name(mr),
2062 memory_region_name(mr->alias),
Blue Swirl314e2982011-09-11 20:22:05 +00002063 mr->alias_offset,
Avi Kivity08dafab2011-10-16 13:19:17 +02002064 mr->alias_offset
Alexey Kardashevskiya66670c2013-08-30 18:10:38 +10002065 + (int128_nz(mr->size) ?
2066 (hwaddr)int128_get64(int128_sub(mr->size,
2067 int128_one())) : 0));
Blue Swirl314e2982011-09-11 20:22:05 +00002068 } else {
Jan Kiszka4896d742012-02-04 16:25:42 +01002069 mon_printf(f,
2070 TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
Blue Swirl314e2982011-09-11 20:22:05 +00002071 base + mr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02002072 base + mr->addr
Alex Williamsonfd1d9922013-07-19 12:42:12 -06002073 + (int128_nz(mr->size) ?
2074 (hwaddr)int128_get64(int128_sub(mr->size,
2075 int128_one())) : 0),
Jan Kiszka4b474ba2011-09-27 15:00:31 +02002076 mr->priority,
Jan Kiszka5f9a5ea2013-05-07 19:04:25 +02002077 mr->romd_mode ? 'R' : '-',
2078 !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
2079 : '-',
Peter Crosthwaite3fb18b42014-08-14 23:55:36 -07002080 memory_region_name(mr));
Blue Swirl314e2982011-09-11 20:22:05 +00002081 }
Jan Kiszka9479c572011-09-27 15:00:41 +02002082
2083 QTAILQ_INIT(&submr_print_queue);
2084
Blue Swirl314e2982011-09-11 20:22:05 +00002085 QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002086 new_ml = g_new(MemoryRegionList, 1);
2087 new_ml->mr = submr;
2088 QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
2089 if (new_ml->mr->addr < ml->mr->addr ||
2090 (new_ml->mr->addr == ml->mr->addr &&
2091 new_ml->mr->priority > ml->mr->priority)) {
2092 QTAILQ_INSERT_BEFORE(ml, new_ml, queue);
2093 new_ml = NULL;
2094 break;
2095 }
2096 }
2097 if (new_ml) {
2098 QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue);
2099 }
2100 }
2101
2102 QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
2103 mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr,
2104 alias_print_queue);
2105 }
2106
Avi Kivity88365e42011-11-13 12:00:55 +02002107 QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) {
Jan Kiszka9479c572011-09-27 15:00:41 +02002108 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002109 }
2110}
2111
2112void mtree_info(fprintf_function mon_printf, void *f)
2113{
2114 MemoryRegionListHead ml_head;
2115 MemoryRegionList *ml, *ml2;
Avi Kivity0d673e32012-10-02 15:28:50 +02002116 AddressSpace *as;
Blue Swirl314e2982011-09-11 20:22:05 +00002117
2118 QTAILQ_INIT(&ml_head);
2119
Avi Kivity0d673e32012-10-02 15:28:50 +02002120 QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
Avi Kivity0d673e32012-10-02 15:28:50 +02002121 mon_printf(f, "%s\n", as->name);
2122 mtree_print_mr(mon_printf, f, as->root, 0, 0, &ml_head);
Blue Swirlb9f9be82012-03-10 16:58:35 +00002123 }
2124
2125 mon_printf(f, "aliases\n");
Blue Swirl314e2982011-09-11 20:22:05 +00002126 /* print aliased regions */
2127 QTAILQ_FOREACH(ml, &ml_head, queue) {
Paolo Bonzinif54bb152013-12-11 12:51:46 +01002128 mon_printf(f, "%s\n", memory_region_name(ml->mr));
2129 mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head);
Blue Swirl314e2982011-09-11 20:22:05 +00002130 }
2131
2132 QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
Avi Kivity88365e42011-11-13 12:00:55 +02002133 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00002134 }
Blue Swirl314e2982011-09-11 20:22:05 +00002135}
Peter Crosthwaiteb4fefef2014-06-05 23:15:52 -07002136
2137static const TypeInfo memory_region_info = {
2138 .parent = TYPE_OBJECT,
2139 .name = TYPE_MEMORY_REGION,
2140 .instance_size = sizeof(MemoryRegion),
2141 .instance_init = memory_region_initfn,
2142 .instance_finalize = memory_region_finalize,
2143};
2144
2145static void memory_register_types(void)
2146{
2147 type_register_static(&memory_region_info);
2148}
2149
2150type_init(memory_register_types)