blob: aab4a3132380fc0b7d38c08802249a56f23da31d [file] [log] [blame]
Avi Kivity093bc2c2011-07-26 14:26:01 +03001/*
2 * Physical memory management
3 *
4 * Copyright 2011 Red Hat, Inc. and/or its affiliates
5 *
6 * Authors:
7 * Avi Kivity <avi@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
Paolo Bonzini6b620ca2012-01-13 17:44:23 +010012 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
Avi Kivity093bc2c2011-07-26 14:26:01 +030014 */
15
16#include "memory.h"
Avi Kivity1c0ffa52011-07-26 14:26:04 +030017#include "exec-memory.h"
Avi Kivity658b2222011-07-26 14:26:08 +030018#include "ioport.h"
Avi Kivity74901c32011-07-26 14:26:10 +030019#include "bitops.h"
Avi Kivity3e9d69e2011-07-26 14:26:11 +030020#include "kvm.h"
Avi Kivity093bc2c2011-07-26 14:26:01 +030021#include <assert.h>
22
Avi Kivity67d95c12011-12-15 15:25:22 +020023#define WANT_EXEC_OBSOLETE
24#include "exec-obsolete.h"
25
Avi Kivity4ef4db82011-07-26 14:26:13 +030026unsigned memory_region_transaction_depth = 0;
Avi Kivitye87c0992011-09-14 12:16:20 +030027static bool memory_region_update_pending = false;
Avi Kivity7664e802011-12-11 14:47:25 +020028static bool global_dirty_log = false;
29
Avi Kivity72e22d22012-02-08 15:05:50 +020030static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
31 = QTAILQ_HEAD_INITIALIZER(memory_listeners);
Avi Kivity4ef4db82011-07-26 14:26:13 +030032
Avi Kivity093bc2c2011-07-26 14:26:01 +030033typedef struct AddrRange AddrRange;
34
Avi Kivity8417ceb2011-08-03 11:56:14 +030035/*
36 * Note using signed integers limits us to physical addresses at most
37 * 63 bits wide. They are needed for negative offsetting in aliases
38 * (large MemoryRegion::alias_offset).
39 */
Avi Kivity093bc2c2011-07-26 14:26:01 +030040struct AddrRange {
Avi Kivity08dafab2011-10-16 13:19:17 +020041 Int128 start;
42 Int128 size;
Avi Kivity093bc2c2011-07-26 14:26:01 +030043};
44
Avi Kivity08dafab2011-10-16 13:19:17 +020045static AddrRange addrrange_make(Int128 start, Int128 size)
Avi Kivity093bc2c2011-07-26 14:26:01 +030046{
47 return (AddrRange) { start, size };
48}
49
50static bool addrrange_equal(AddrRange r1, AddrRange r2)
51{
Avi Kivity08dafab2011-10-16 13:19:17 +020052 return int128_eq(r1.start, r2.start) && int128_eq(r1.size, r2.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030053}
54
Avi Kivity08dafab2011-10-16 13:19:17 +020055static Int128 addrrange_end(AddrRange r)
Avi Kivity093bc2c2011-07-26 14:26:01 +030056{
Avi Kivity08dafab2011-10-16 13:19:17 +020057 return int128_add(r.start, r.size);
Avi Kivity093bc2c2011-07-26 14:26:01 +030058}
59
Avi Kivity08dafab2011-10-16 13:19:17 +020060static AddrRange addrrange_shift(AddrRange range, Int128 delta)
Avi Kivity093bc2c2011-07-26 14:26:01 +030061{
Avi Kivity08dafab2011-10-16 13:19:17 +020062 int128_addto(&range.start, delta);
Avi Kivity093bc2c2011-07-26 14:26:01 +030063 return range;
64}
65
Avi Kivity08dafab2011-10-16 13:19:17 +020066static bool addrrange_contains(AddrRange range, Int128 addr)
67{
68 return int128_ge(addr, range.start)
69 && int128_lt(addr, addrrange_end(range));
70}
71
Avi Kivity093bc2c2011-07-26 14:26:01 +030072static bool addrrange_intersects(AddrRange r1, AddrRange r2)
73{
Avi Kivity08dafab2011-10-16 13:19:17 +020074 return addrrange_contains(r1, r2.start)
75 || addrrange_contains(r2, r1.start);
Avi Kivity093bc2c2011-07-26 14:26:01 +030076}
77
78static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)
79{
Avi Kivity08dafab2011-10-16 13:19:17 +020080 Int128 start = int128_max(r1.start, r2.start);
81 Int128 end = int128_min(addrrange_end(r1), addrrange_end(r2));
82 return addrrange_make(start, int128_sub(end, start));
Avi Kivity093bc2c2011-07-26 14:26:01 +030083}
84
Avi Kivity0e0d36b2012-02-08 16:39:45 +020085enum ListenerDirection { Forward, Reverse };
86
Avi Kivity7376e582012-02-08 21:05:17 +020087static bool memory_listener_match(MemoryListener *listener,
88 MemoryRegionSection *section)
89{
90 return !listener->address_space_filter
91 || listener->address_space_filter == section->address_space;
92}
93
94#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \
Avi Kivity0e0d36b2012-02-08 16:39:45 +020095 do { \
96 MemoryListener *_listener; \
97 \
98 switch (_direction) { \
99 case Forward: \
100 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
101 _listener->_callback(_listener, ##_args); \
102 } \
103 break; \
104 case Reverse: \
105 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
106 memory_listeners, link) { \
107 _listener->_callback(_listener, ##_args); \
108 } \
109 break; \
110 default: \
111 abort(); \
112 } \
113 } while (0)
114
Avi Kivity7376e582012-02-08 21:05:17 +0200115#define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \
116 do { \
117 MemoryListener *_listener; \
118 \
119 switch (_direction) { \
120 case Forward: \
121 QTAILQ_FOREACH(_listener, &memory_listeners, link) { \
122 if (memory_listener_match(_listener, _section)) { \
123 _listener->_callback(_listener, _section, ##_args); \
124 } \
125 } \
126 break; \
127 case Reverse: \
128 QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \
129 memory_listeners, link) { \
130 if (memory_listener_match(_listener, _section)) { \
131 _listener->_callback(_listener, _section, ##_args); \
132 } \
133 } \
134 break; \
135 default: \
136 abort(); \
137 } \
138 } while (0)
139
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200140#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \
Avi Kivity7376e582012-02-08 21:05:17 +0200141 MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200142 .mr = (fr)->mr, \
143 .address_space = (as)->root, \
144 .offset_within_region = (fr)->offset_in_region, \
145 .size = int128_get64((fr)->addr.size), \
146 .offset_within_address_space = int128_get64((fr)->addr.start), \
Avi Kivity7a8499e2012-02-08 17:01:23 +0200147 .readonly = (fr)->readonly, \
Avi Kivity7376e582012-02-08 21:05:17 +0200148 }))
Avi Kivity0e0d36b2012-02-08 16:39:45 +0200149
Avi Kivity093bc2c2011-07-26 14:26:01 +0300150struct CoalescedMemoryRange {
151 AddrRange addr;
152 QTAILQ_ENTRY(CoalescedMemoryRange) link;
153};
154
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300155struct MemoryRegionIoeventfd {
156 AddrRange addr;
157 bool match_data;
158 uint64_t data;
159 int fd;
160};
161
162static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
163 MemoryRegionIoeventfd b)
164{
Avi Kivity08dafab2011-10-16 13:19:17 +0200165 if (int128_lt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300166 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200167 } else if (int128_gt(a.addr.start, b.addr.start)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300168 return false;
Avi Kivity08dafab2011-10-16 13:19:17 +0200169 } else if (int128_lt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300170 return true;
Avi Kivity08dafab2011-10-16 13:19:17 +0200171 } else if (int128_gt(a.addr.size, b.addr.size)) {
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300172 return false;
173 } else if (a.match_data < b.match_data) {
174 return true;
175 } else if (a.match_data > b.match_data) {
176 return false;
177 } else if (a.match_data) {
178 if (a.data < b.data) {
179 return true;
180 } else if (a.data > b.data) {
181 return false;
182 }
183 }
184 if (a.fd < b.fd) {
185 return true;
186 } else if (a.fd > b.fd) {
187 return false;
188 }
189 return false;
190}
191
192static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd a,
193 MemoryRegionIoeventfd b)
194{
195 return !memory_region_ioeventfd_before(a, b)
196 && !memory_region_ioeventfd_before(b, a);
197}
198
Avi Kivity093bc2c2011-07-26 14:26:01 +0300199typedef struct FlatRange FlatRange;
200typedef struct FlatView FlatView;
201
202/* Range of memory in the global map. Addresses are absolute. */
203struct FlatRange {
204 MemoryRegion *mr;
205 target_phys_addr_t offset_in_region;
206 AddrRange addr;
Avi Kivity5a583342011-07-26 14:26:02 +0300207 uint8_t dirty_log_mask;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300208 bool readable;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300209 bool readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300210};
211
212/* Flattened global view of current active memory hierarchy. Kept in sorted
213 * order.
214 */
215struct FlatView {
216 FlatRange *ranges;
217 unsigned nr;
218 unsigned nr_allocated;
219};
220
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300221typedef struct AddressSpace AddressSpace;
222typedef struct AddressSpaceOps AddressSpaceOps;
223
224/* A system address space - I/O, memory, etc. */
225struct AddressSpace {
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300226 MemoryRegion *root;
227 FlatView current_map;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300228 int ioeventfd_nb;
229 MemoryRegionIoeventfd *ioeventfds;
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300230};
231
Avi Kivity093bc2c2011-07-26 14:26:01 +0300232#define FOR_EACH_FLAT_RANGE(var, view) \
233 for (var = (view)->ranges; var < (view)->ranges + (view)->nr; ++var)
234
Avi Kivity093bc2c2011-07-26 14:26:01 +0300235static bool flatrange_equal(FlatRange *a, FlatRange *b)
236{
237 return a->mr == b->mr
238 && addrrange_equal(a->addr, b->addr)
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300239 && a->offset_in_region == b->offset_in_region
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300240 && a->readable == b->readable
241 && a->readonly == b->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300242}
243
244static void flatview_init(FlatView *view)
245{
246 view->ranges = NULL;
247 view->nr = 0;
248 view->nr_allocated = 0;
249}
250
251/* Insert a range into a given position. Caller is responsible for maintaining
252 * sorting order.
253 */
254static void flatview_insert(FlatView *view, unsigned pos, FlatRange *range)
255{
256 if (view->nr == view->nr_allocated) {
257 view->nr_allocated = MAX(2 * view->nr, 10);
Anthony Liguori7267c092011-08-20 22:09:37 -0500258 view->ranges = g_realloc(view->ranges,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300259 view->nr_allocated * sizeof(*view->ranges));
260 }
261 memmove(view->ranges + pos + 1, view->ranges + pos,
262 (view->nr - pos) * sizeof(FlatRange));
263 view->ranges[pos] = *range;
264 ++view->nr;
265}
266
267static void flatview_destroy(FlatView *view)
268{
Anthony Liguori7267c092011-08-20 22:09:37 -0500269 g_free(view->ranges);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300270}
271
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300272static bool can_merge(FlatRange *r1, FlatRange *r2)
273{
Avi Kivity08dafab2011-10-16 13:19:17 +0200274 return int128_eq(addrrange_end(r1->addr), r2->addr.start)
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300275 && r1->mr == r2->mr
Avi Kivity08dafab2011-10-16 13:19:17 +0200276 && int128_eq(int128_add(int128_make64(r1->offset_in_region),
277 r1->addr.size),
278 int128_make64(r2->offset_in_region))
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300279 && r1->dirty_log_mask == r2->dirty_log_mask
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300280 && r1->readable == r2->readable
281 && r1->readonly == r2->readonly;
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300282}
283
284/* Attempt to simplify a view by merging ajacent ranges */
285static void flatview_simplify(FlatView *view)
286{
287 unsigned i, j;
288
289 i = 0;
290 while (i < view->nr) {
291 j = i + 1;
292 while (j < view->nr
293 && can_merge(&view->ranges[j-1], &view->ranges[j])) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200294 int128_addto(&view->ranges[i].addr.size, view->ranges[j].addr.size);
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300295 ++j;
296 }
297 ++i;
298 memmove(&view->ranges[i], &view->ranges[j],
299 (view->nr - j) * sizeof(view->ranges[j]));
300 view->nr -= j - i;
301 }
302}
303
Avi Kivity164a4dc2011-08-11 10:40:25 +0300304static void memory_region_read_accessor(void *opaque,
305 target_phys_addr_t addr,
306 uint64_t *value,
307 unsigned size,
308 unsigned shift,
309 uint64_t mask)
310{
311 MemoryRegion *mr = opaque;
312 uint64_t tmp;
313
314 tmp = mr->ops->read(mr->opaque, addr, size);
315 *value |= (tmp & mask) << shift;
316}
317
318static void memory_region_write_accessor(void *opaque,
319 target_phys_addr_t addr,
320 uint64_t *value,
321 unsigned size,
322 unsigned shift,
323 uint64_t mask)
324{
325 MemoryRegion *mr = opaque;
326 uint64_t tmp;
327
328 tmp = (*value >> shift) & mask;
329 mr->ops->write(mr->opaque, addr, tmp, size);
330}
331
332static void access_with_adjusted_size(target_phys_addr_t addr,
333 uint64_t *value,
334 unsigned size,
335 unsigned access_size_min,
336 unsigned access_size_max,
337 void (*access)(void *opaque,
338 target_phys_addr_t addr,
339 uint64_t *value,
340 unsigned size,
341 unsigned shift,
342 uint64_t mask),
343 void *opaque)
344{
345 uint64_t access_mask;
346 unsigned access_size;
347 unsigned i;
348
349 if (!access_size_min) {
350 access_size_min = 1;
351 }
352 if (!access_size_max) {
353 access_size_max = 4;
354 }
355 access_size = MAX(MIN(size, access_size_max), access_size_min);
356 access_mask = -1ULL >> (64 - access_size * 8);
357 for (i = 0; i < size; i += access_size) {
358 /* FIXME: big-endian support */
359 access(opaque, addr + i, value, access_size, i * 8, access_mask);
360 }
361}
362
Avi Kivity8df8a842012-02-08 17:19:46 +0200363static AddressSpace address_space_memory;
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300364
Avi Kivity627a0e92011-07-26 14:26:09 +0300365static const MemoryRegionPortio *find_portio(MemoryRegion *mr, uint64_t offset,
366 unsigned width, bool write)
367{
368 const MemoryRegionPortio *mrp;
369
370 for (mrp = mr->ops->old_portio; mrp->size; ++mrp) {
371 if (offset >= mrp->offset && offset < mrp->offset + mrp->len
372 && width == mrp->size
373 && (write ? (bool)mrp->write : (bool)mrp->read)) {
374 return mrp;
375 }
376 }
377 return NULL;
378}
379
Avi Kivity658b2222011-07-26 14:26:08 +0300380static void memory_region_iorange_read(IORange *iorange,
381 uint64_t offset,
382 unsigned width,
383 uint64_t *data)
384{
Avi Kivitya2d33522012-03-05 17:40:12 +0200385 MemoryRegionIORange *mrio
386 = container_of(iorange, MemoryRegionIORange, iorange);
387 MemoryRegion *mr = mrio->mr;
Avi Kivity658b2222011-07-26 14:26:08 +0300388
Avi Kivitya2d33522012-03-05 17:40:12 +0200389 offset += mrio->offset;
Avi Kivity627a0e92011-07-26 14:26:09 +0300390 if (mr->ops->old_portio) {
Avi Kivitya2d33522012-03-05 17:40:12 +0200391 const MemoryRegionPortio *mrp = find_portio(mr, offset - mrio->offset,
392 width, false);
Avi Kivity627a0e92011-07-26 14:26:09 +0300393
394 *data = ((uint64_t)1 << (width * 8)) - 1;
395 if (mrp) {
Avi Kivity2b50aa12012-01-08 19:51:35 +0200396 *data = mrp->read(mr->opaque, offset);
Jan Kiszka03808f52011-09-18 14:51:58 +0200397 } else if (width == 2) {
Avi Kivitya2d33522012-03-05 17:40:12 +0200398 mrp = find_portio(mr, offset - mrio->offset, 1, false);
Jan Kiszka03808f52011-09-18 14:51:58 +0200399 assert(mrp);
Avi Kivity2b50aa12012-01-08 19:51:35 +0200400 *data = mrp->read(mr->opaque, offset) |
401 (mrp->read(mr->opaque, offset + 1) << 8);
Avi Kivity627a0e92011-07-26 14:26:09 +0300402 }
403 return;
404 }
Avi Kivity3a130f42011-08-11 10:40:26 +0300405 *data = 0;
Avi Kivity2b50aa12012-01-08 19:51:35 +0200406 access_with_adjusted_size(offset, data, width,
Avi Kivity3a130f42011-08-11 10:40:26 +0300407 mr->ops->impl.min_access_size,
408 mr->ops->impl.max_access_size,
409 memory_region_read_accessor, mr);
Avi Kivity658b2222011-07-26 14:26:08 +0300410}
411
412static void memory_region_iorange_write(IORange *iorange,
413 uint64_t offset,
414 unsigned width,
415 uint64_t data)
416{
Avi Kivitya2d33522012-03-05 17:40:12 +0200417 MemoryRegionIORange *mrio
418 = container_of(iorange, MemoryRegionIORange, iorange);
419 MemoryRegion *mr = mrio->mr;
Avi Kivity658b2222011-07-26 14:26:08 +0300420
Avi Kivitya2d33522012-03-05 17:40:12 +0200421 offset += mrio->offset;
Avi Kivity627a0e92011-07-26 14:26:09 +0300422 if (mr->ops->old_portio) {
Avi Kivitya2d33522012-03-05 17:40:12 +0200423 const MemoryRegionPortio *mrp = find_portio(mr, offset - mrio->offset,
424 width, true);
Avi Kivity627a0e92011-07-26 14:26:09 +0300425
426 if (mrp) {
Avi Kivity2b50aa12012-01-08 19:51:35 +0200427 mrp->write(mr->opaque, offset, data);
Jan Kiszka03808f52011-09-18 14:51:58 +0200428 } else if (width == 2) {
Avi Kivitya2d33522012-03-05 17:40:12 +0200429 mrp = find_portio(mr, offset - mrio->offset, 1, false);
Jan Kiszka03808f52011-09-18 14:51:58 +0200430 assert(mrp);
Avi Kivity2b50aa12012-01-08 19:51:35 +0200431 mrp->write(mr->opaque, offset, data & 0xff);
432 mrp->write(mr->opaque, offset + 1, data >> 8);
Avi Kivity627a0e92011-07-26 14:26:09 +0300433 }
434 return;
435 }
Avi Kivity2b50aa12012-01-08 19:51:35 +0200436 access_with_adjusted_size(offset, &data, width,
Avi Kivity3a130f42011-08-11 10:40:26 +0300437 mr->ops->impl.min_access_size,
438 mr->ops->impl.max_access_size,
439 memory_region_write_accessor, mr);
Avi Kivity658b2222011-07-26 14:26:08 +0300440}
441
Avi Kivitya2d33522012-03-05 17:40:12 +0200442static void memory_region_iorange_destructor(IORange *iorange)
443{
444 g_free(container_of(iorange, MemoryRegionIORange, iorange));
445}
446
Avi Kivity93632742012-02-08 16:54:16 +0200447const IORangeOps memory_region_iorange_ops = {
Avi Kivity658b2222011-07-26 14:26:08 +0300448 .read = memory_region_iorange_read,
449 .write = memory_region_iorange_write,
Avi Kivitya2d33522012-03-05 17:40:12 +0200450 .destructor = memory_region_iorange_destructor,
Avi Kivity658b2222011-07-26 14:26:08 +0300451};
452
Avi Kivity8df8a842012-02-08 17:19:46 +0200453static AddressSpace address_space_io;
Avi Kivity658b2222011-07-26 14:26:08 +0300454
Avi Kivitye2177952011-12-08 15:00:18 +0200455static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
456{
457 while (mr->parent) {
458 mr = mr->parent;
459 }
460 if (mr == address_space_memory.root) {
461 return &address_space_memory;
462 }
463 if (mr == address_space_io.root) {
464 return &address_space_io;
465 }
466 abort();
467}
468
Avi Kivity093bc2c2011-07-26 14:26:01 +0300469/* Render a memory region into the global view. Ranges in @view obscure
470 * ranges in @mr.
471 */
472static void render_memory_region(FlatView *view,
473 MemoryRegion *mr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200474 Int128 base,
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300475 AddrRange clip,
476 bool readonly)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300477{
478 MemoryRegion *subregion;
479 unsigned i;
480 target_phys_addr_t offset_in_region;
Avi Kivity08dafab2011-10-16 13:19:17 +0200481 Int128 remain;
482 Int128 now;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300483 FlatRange fr;
484 AddrRange tmp;
485
Avi Kivity6bba19b2011-09-14 11:54:58 +0300486 if (!mr->enabled) {
487 return;
488 }
489
Avi Kivity08dafab2011-10-16 13:19:17 +0200490 int128_addto(&base, int128_make64(mr->addr));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300491 readonly |= mr->readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300492
493 tmp = addrrange_make(base, mr->size);
494
495 if (!addrrange_intersects(tmp, clip)) {
496 return;
497 }
498
499 clip = addrrange_intersection(tmp, clip);
500
501 if (mr->alias) {
Avi Kivity08dafab2011-10-16 13:19:17 +0200502 int128_subfrom(&base, int128_make64(mr->alias->addr));
503 int128_subfrom(&base, int128_make64(mr->alias_offset));
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300504 render_memory_region(view, mr->alias, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300505 return;
506 }
507
508 /* Render subregions in priority order. */
509 QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300510 render_memory_region(view, subregion, base, clip, readonly);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300511 }
512
Avi Kivity14a3c102011-07-26 14:26:06 +0300513 if (!mr->terminates) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300514 return;
515 }
516
Avi Kivity08dafab2011-10-16 13:19:17 +0200517 offset_in_region = int128_get64(int128_sub(clip.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300518 base = clip.start;
519 remain = clip.size;
520
521 /* Render the region itself into any gaps left by the current view. */
Avi Kivity08dafab2011-10-16 13:19:17 +0200522 for (i = 0; i < view->nr && int128_nz(remain); ++i) {
523 if (int128_ge(base, addrrange_end(view->ranges[i].addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300524 continue;
525 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200526 if (int128_lt(base, view->ranges[i].addr.start)) {
527 now = int128_min(remain,
528 int128_sub(view->ranges[i].addr.start, base));
Avi Kivity093bc2c2011-07-26 14:26:01 +0300529 fr.mr = mr;
530 fr.offset_in_region = offset_in_region;
531 fr.addr = addrrange_make(base, now);
Avi Kivity5a583342011-07-26 14:26:02 +0300532 fr.dirty_log_mask = mr->dirty_log_mask;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300533 fr.readable = mr->readable;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300534 fr.readonly = readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300535 flatview_insert(view, i, &fr);
536 ++i;
Avi Kivity08dafab2011-10-16 13:19:17 +0200537 int128_addto(&base, now);
538 offset_in_region += int128_get64(now);
539 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300540 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200541 if (int128_eq(base, view->ranges[i].addr.start)) {
542 now = int128_min(remain, view->ranges[i].addr.size);
543 int128_addto(&base, now);
544 offset_in_region += int128_get64(now);
545 int128_subfrom(&remain, now);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300546 }
547 }
Avi Kivity08dafab2011-10-16 13:19:17 +0200548 if (int128_nz(remain)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300549 fr.mr = mr;
550 fr.offset_in_region = offset_in_region;
551 fr.addr = addrrange_make(base, remain);
Avi Kivity5a583342011-07-26 14:26:02 +0300552 fr.dirty_log_mask = mr->dirty_log_mask;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300553 fr.readable = mr->readable;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300554 fr.readonly = readonly;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300555 flatview_insert(view, i, &fr);
556 }
557}
558
559/* Render a memory topology into a list of disjoint absolute ranges. */
560static FlatView generate_memory_topology(MemoryRegion *mr)
561{
562 FlatView view;
563
564 flatview_init(&view);
565
Avi Kivity08dafab2011-10-16 13:19:17 +0200566 render_memory_region(&view, mr, int128_zero(),
567 addrrange_make(int128_zero(), int128_2_64()), false);
Avi Kivity3d8e6bf2011-07-26 14:26:03 +0300568 flatview_simplify(&view);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300569
570 return view;
571}
572
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300573static void address_space_add_del_ioeventfds(AddressSpace *as,
574 MemoryRegionIoeventfd *fds_new,
575 unsigned fds_new_nb,
576 MemoryRegionIoeventfd *fds_old,
577 unsigned fds_old_nb)
578{
579 unsigned iold, inew;
Avi Kivity80a1ea32012-02-08 16:39:06 +0200580 MemoryRegionIoeventfd *fd;
581 MemoryRegionSection section;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300582
583 /* Generate a symmetric difference of the old and new fd sets, adding
584 * and deleting as necessary.
585 */
586
587 iold = inew = 0;
588 while (iold < fds_old_nb || inew < fds_new_nb) {
589 if (iold < fds_old_nb
590 && (inew == fds_new_nb
591 || memory_region_ioeventfd_before(fds_old[iold],
592 fds_new[inew]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200593 fd = &fds_old[iold];
594 section = (MemoryRegionSection) {
595 .address_space = as->root,
596 .offset_within_address_space = int128_get64(fd->addr.start),
597 .size = int128_get64(fd->addr.size),
598 };
599 MEMORY_LISTENER_CALL(eventfd_del, Forward, &section,
600 fd->match_data, fd->data, fd->fd);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300601 ++iold;
602 } else if (inew < fds_new_nb
603 && (iold == fds_old_nb
604 || memory_region_ioeventfd_before(fds_new[inew],
605 fds_old[iold]))) {
Avi Kivity80a1ea32012-02-08 16:39:06 +0200606 fd = &fds_new[inew];
607 section = (MemoryRegionSection) {
608 .address_space = as->root,
609 .offset_within_address_space = int128_get64(fd->addr.start),
610 .size = int128_get64(fd->addr.size),
611 };
612 MEMORY_LISTENER_CALL(eventfd_add, Reverse, &section,
613 fd->match_data, fd->data, fd->fd);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300614 ++inew;
615 } else {
616 ++iold;
617 ++inew;
618 }
619 }
620}
621
622static void address_space_update_ioeventfds(AddressSpace *as)
623{
624 FlatRange *fr;
625 unsigned ioeventfd_nb = 0;
626 MemoryRegionIoeventfd *ioeventfds = NULL;
627 AddrRange tmp;
628 unsigned i;
629
630 FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
631 for (i = 0; i < fr->mr->ioeventfd_nb; ++i) {
632 tmp = addrrange_shift(fr->mr->ioeventfds[i].addr,
Avi Kivity08dafab2011-10-16 13:19:17 +0200633 int128_sub(fr->addr.start,
634 int128_make64(fr->offset_in_region)));
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300635 if (addrrange_intersects(fr->addr, tmp)) {
636 ++ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -0500637 ioeventfds = g_realloc(ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300638 ioeventfd_nb * sizeof(*ioeventfds));
639 ioeventfds[ioeventfd_nb-1] = fr->mr->ioeventfds[i];
640 ioeventfds[ioeventfd_nb-1].addr = tmp;
641 }
642 }
643 }
644
645 address_space_add_del_ioeventfds(as, ioeventfds, ioeventfd_nb,
646 as->ioeventfds, as->ioeventfd_nb);
647
Anthony Liguori7267c092011-08-20 22:09:37 -0500648 g_free(as->ioeventfds);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300649 as->ioeventfds = ioeventfds;
650 as->ioeventfd_nb = ioeventfd_nb;
651}
652
Avi Kivityb8af1af2011-07-26 14:26:12 +0300653static void address_space_update_topology_pass(AddressSpace *as,
654 FlatView old_view,
655 FlatView new_view,
656 bool adding)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300657{
Avi Kivity093bc2c2011-07-26 14:26:01 +0300658 unsigned iold, inew;
659 FlatRange *frold, *frnew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300660
661 /* Generate a symmetric difference of the old and new memory maps.
662 * Kill ranges in the old map, and instantiate ranges in the new map.
663 */
664 iold = inew = 0;
665 while (iold < old_view.nr || inew < new_view.nr) {
666 if (iold < old_view.nr) {
667 frold = &old_view.ranges[iold];
668 } else {
669 frold = NULL;
670 }
671 if (inew < new_view.nr) {
672 frnew = &new_view.ranges[inew];
673 } else {
674 frnew = NULL;
675 }
676
677 if (frold
678 && (!frnew
Avi Kivity08dafab2011-10-16 13:19:17 +0200679 || int128_lt(frold->addr.start, frnew->addr.start)
680 || (int128_eq(frold->addr.start, frnew->addr.start)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300681 && !flatrange_equal(frold, frnew)))) {
682 /* In old, but (not in new, or in new but attributes changed). */
683
Avi Kivityb8af1af2011-07-26 14:26:12 +0300684 if (!adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200685 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300686 }
687
Avi Kivity093bc2c2011-07-26 14:26:01 +0300688 ++iold;
689 } else if (frold && frnew && flatrange_equal(frold, frnew)) {
690 /* In both (logging may have changed) */
691
Avi Kivityb8af1af2011-07-26 14:26:12 +0300692 if (adding) {
Avi Kivity50c1e142012-02-08 21:36:02 +0200693 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300694 if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200695 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300696 } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200697 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300698 }
Avi Kivity5a583342011-07-26 14:26:02 +0300699 }
700
Avi Kivity093bc2c2011-07-26 14:26:01 +0300701 ++iold;
702 ++inew;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300703 } else {
704 /* In new */
705
Avi Kivityb8af1af2011-07-26 14:26:12 +0300706 if (adding) {
Avi Kivity72e22d22012-02-08 15:05:50 +0200707 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
Avi Kivityb8af1af2011-07-26 14:26:12 +0300708 }
709
Avi Kivity093bc2c2011-07-26 14:26:01 +0300710 ++inew;
711 }
712 }
Avi Kivityb8af1af2011-07-26 14:26:12 +0300713}
714
715
716static void address_space_update_topology(AddressSpace *as)
717{
718 FlatView old_view = as->current_map;
719 FlatView new_view = generate_memory_topology(as->root);
720
721 address_space_update_topology_pass(as, old_view, new_view, false);
722 address_space_update_topology_pass(as, old_view, new_view, true);
723
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300724 as->current_map = new_view;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300725 flatview_destroy(&old_view);
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300726 address_space_update_ioeventfds(as);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300727}
728
Avi Kivity6bba19b2011-09-14 11:54:58 +0300729static void memory_region_update_topology(MemoryRegion *mr)
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300730{
Avi Kivity4ef4db82011-07-26 14:26:13 +0300731 if (memory_region_transaction_depth) {
Avi Kivitye87c0992011-09-14 12:16:20 +0300732 memory_region_update_pending |= !mr || mr->enabled;
Avi Kivity4ef4db82011-07-26 14:26:13 +0300733 return;
734 }
735
Avi Kivity6bba19b2011-09-14 11:54:58 +0300736 if (mr && !mr->enabled) {
737 return;
738 }
739
Avi Kivity50c1e142012-02-08 21:36:02 +0200740 MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
741
Avi Kivity658b2222011-07-26 14:26:08 +0300742 if (address_space_memory.root) {
743 address_space_update_topology(&address_space_memory);
744 }
745 if (address_space_io.root) {
746 address_space_update_topology(&address_space_io);
747 }
Avi Kivitye87c0992011-09-14 12:16:20 +0300748
Avi Kivity50c1e142012-02-08 21:36:02 +0200749 MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
750
Avi Kivitye87c0992011-09-14 12:16:20 +0300751 memory_region_update_pending = false;
Avi Kivitycc31e6e2011-07-26 14:26:05 +0300752}
753
Avi Kivity4ef4db82011-07-26 14:26:13 +0300754void memory_region_transaction_begin(void)
755{
756 ++memory_region_transaction_depth;
757}
758
759void memory_region_transaction_commit(void)
760{
761 assert(memory_region_transaction_depth);
762 --memory_region_transaction_depth;
Avi Kivitye87c0992011-09-14 12:16:20 +0300763 if (!memory_region_transaction_depth && memory_region_update_pending) {
764 memory_region_update_topology(NULL);
765 }
Avi Kivity4ef4db82011-07-26 14:26:13 +0300766}
767
Avi Kivity545e92e2011-08-08 19:58:48 +0300768static void memory_region_destructor_none(MemoryRegion *mr)
769{
770}
771
772static void memory_region_destructor_ram(MemoryRegion *mr)
773{
774 qemu_ram_free(mr->ram_addr);
775}
776
777static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
778{
779 qemu_ram_free_from_ptr(mr->ram_addr);
780}
781
782static void memory_region_destructor_iomem(MemoryRegion *mr)
783{
Avi Kivity545e92e2011-08-08 19:58:48 +0300784}
785
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300786static void memory_region_destructor_rom_device(MemoryRegion *mr)
787{
788 qemu_ram_free(mr->ram_addr & TARGET_PAGE_MASK);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300789}
790
Avi Kivitybe675c92011-11-20 16:22:55 +0200791static bool memory_region_wrong_endianness(MemoryRegion *mr)
792{
Andreas Färber2c3579a2012-01-07 09:45:14 +0100793#ifdef TARGET_WORDS_BIGENDIAN
Avi Kivitybe675c92011-11-20 16:22:55 +0200794 return mr->ops->endianness == DEVICE_LITTLE_ENDIAN;
795#else
796 return mr->ops->endianness == DEVICE_BIG_ENDIAN;
797#endif
798}
799
Avi Kivity093bc2c2011-07-26 14:26:01 +0300800void memory_region_init(MemoryRegion *mr,
801 const char *name,
802 uint64_t size)
803{
804 mr->ops = NULL;
805 mr->parent = NULL;
Avi Kivity08dafab2011-10-16 13:19:17 +0200806 mr->size = int128_make64(size);
807 if (size == UINT64_MAX) {
808 mr->size = int128_2_64();
809 }
Avi Kivity093bc2c2011-07-26 14:26:01 +0300810 mr->addr = 0;
Avi Kivityb3b00c72012-01-02 13:20:11 +0200811 mr->subpage = false;
Avi Kivity6bba19b2011-09-14 11:54:58 +0300812 mr->enabled = true;
Avi Kivity14a3c102011-07-26 14:26:06 +0300813 mr->terminates = false;
Avi Kivity8ea92522011-12-08 15:58:43 +0200814 mr->ram = false;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300815 mr->readable = true;
Avi Kivityfb1cd6f2011-09-25 14:48:47 +0300816 mr->readonly = false;
Avi Kivity75c578d2012-01-02 15:40:52 +0200817 mr->rom_device = false;
Avi Kivity545e92e2011-08-08 19:58:48 +0300818 mr->destructor = memory_region_destructor_none;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300819 mr->priority = 0;
820 mr->may_overlap = false;
821 mr->alias = NULL;
822 QTAILQ_INIT(&mr->subregions);
823 memset(&mr->subregions_link, 0, sizeof mr->subregions_link);
824 QTAILQ_INIT(&mr->coalesced);
Anthony Liguori7267c092011-08-20 22:09:37 -0500825 mr->name = g_strdup(name);
Avi Kivity5a583342011-07-26 14:26:02 +0300826 mr->dirty_log_mask = 0;
Avi Kivity3e9d69e2011-07-26 14:26:11 +0300827 mr->ioeventfd_nb = 0;
828 mr->ioeventfds = NULL;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300829}
830
831static bool memory_region_access_valid(MemoryRegion *mr,
832 target_phys_addr_t addr,
Avi Kivity897fa7c2011-11-13 13:05:27 +0200833 unsigned size,
834 bool is_write)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300835{
Avi Kivity897fa7c2011-11-13 13:05:27 +0200836 if (mr->ops->valid.accepts
837 && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write)) {
838 return false;
839 }
840
Avi Kivity093bc2c2011-07-26 14:26:01 +0300841 if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
842 return false;
843 }
844
845 /* Treat zero as compatibility all valid */
846 if (!mr->ops->valid.max_access_size) {
847 return true;
848 }
849
850 if (size > mr->ops->valid.max_access_size
851 || size < mr->ops->valid.min_access_size) {
852 return false;
853 }
854 return true;
855}
856
Avi Kivitya621f382012-01-02 13:12:08 +0200857static uint64_t memory_region_dispatch_read1(MemoryRegion *mr,
858 target_phys_addr_t addr,
859 unsigned size)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300860{
Avi Kivity164a4dc2011-08-11 10:40:25 +0300861 uint64_t data = 0;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300862
Avi Kivity897fa7c2011-11-13 13:05:27 +0200863 if (!memory_region_access_valid(mr, addr, size, false)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300864 return -1U; /* FIXME: better signalling */
865 }
866
Avi Kivity74901c32011-07-26 14:26:10 +0300867 if (!mr->ops->read) {
868 return mr->ops->old_mmio.read[bitops_ffsl(size)](mr->opaque, addr);
869 }
870
Avi Kivity093bc2c2011-07-26 14:26:01 +0300871 /* FIXME: support unaligned access */
Avi Kivity2b50aa12012-01-08 19:51:35 +0200872 access_with_adjusted_size(addr, &data, size,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300873 mr->ops->impl.min_access_size,
874 mr->ops->impl.max_access_size,
875 memory_region_read_accessor, mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300876
877 return data;
878}
879
Avi Kivitya621f382012-01-02 13:12:08 +0200880static void adjust_endianness(MemoryRegion *mr, uint64_t *data, unsigned size)
Avi Kivity093bc2c2011-07-26 14:26:01 +0300881{
Avi Kivitya621f382012-01-02 13:12:08 +0200882 if (memory_region_wrong_endianness(mr)) {
883 switch (size) {
884 case 1:
885 break;
886 case 2:
887 *data = bswap16(*data);
888 break;
889 case 4:
890 *data = bswap32(*data);
Andreas Färber1470a0c2012-01-07 09:45:15 +0100891 break;
Avi Kivitya621f382012-01-02 13:12:08 +0200892 default:
893 abort();
894 }
895 }
896}
Avi Kivity093bc2c2011-07-26 14:26:01 +0300897
Avi Kivitya621f382012-01-02 13:12:08 +0200898static uint64_t memory_region_dispatch_read(MemoryRegion *mr,
899 target_phys_addr_t addr,
900 unsigned size)
901{
902 uint64_t ret;
903
904 ret = memory_region_dispatch_read1(mr, addr, size);
905 adjust_endianness(mr, &ret, size);
906 return ret;
907}
908
909static void memory_region_dispatch_write(MemoryRegion *mr,
910 target_phys_addr_t addr,
911 uint64_t data,
912 unsigned size)
913{
Avi Kivity897fa7c2011-11-13 13:05:27 +0200914 if (!memory_region_access_valid(mr, addr, size, true)) {
Avi Kivity093bc2c2011-07-26 14:26:01 +0300915 return; /* FIXME: better signalling */
916 }
917
Avi Kivitya621f382012-01-02 13:12:08 +0200918 adjust_endianness(mr, &data, size);
919
Avi Kivity74901c32011-07-26 14:26:10 +0300920 if (!mr->ops->write) {
921 mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
922 return;
923 }
924
Avi Kivity093bc2c2011-07-26 14:26:01 +0300925 /* FIXME: support unaligned access */
Avi Kivity2b50aa12012-01-08 19:51:35 +0200926 access_with_adjusted_size(addr, &data, size,
Avi Kivity164a4dc2011-08-11 10:40:25 +0300927 mr->ops->impl.min_access_size,
928 mr->ops->impl.max_access_size,
929 memory_region_write_accessor, mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300930}
931
Avi Kivity093bc2c2011-07-26 14:26:01 +0300932void memory_region_init_io(MemoryRegion *mr,
933 const MemoryRegionOps *ops,
934 void *opaque,
935 const char *name,
936 uint64_t size)
937{
938 memory_region_init(mr, name, size);
939 mr->ops = ops;
940 mr->opaque = opaque;
Avi Kivity14a3c102011-07-26 14:26:06 +0300941 mr->terminates = true;
Avi Kivity26a83ad2012-01-01 18:02:31 +0200942 mr->destructor = memory_region_destructor_iomem;
Avi Kivity97161e12012-03-08 19:16:39 +0200943 mr->ram_addr = ~(ram_addr_t)0;
Avi Kivity093bc2c2011-07-26 14:26:01 +0300944}
945
946void memory_region_init_ram(MemoryRegion *mr,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300947 const char *name,
948 uint64_t size)
949{
950 memory_region_init(mr, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +0200951 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +0300952 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +0300953 mr->destructor = memory_region_destructor_ram;
Avi Kivityc5705a72011-12-20 15:59:12 +0200954 mr->ram_addr = qemu_ram_alloc(size, mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300955}
956
957void memory_region_init_ram_ptr(MemoryRegion *mr,
Avi Kivity093bc2c2011-07-26 14:26:01 +0300958 const char *name,
959 uint64_t size,
960 void *ptr)
961{
962 memory_region_init(mr, name, size);
Avi Kivity8ea92522011-12-08 15:58:43 +0200963 mr->ram = true;
Avi Kivity14a3c102011-07-26 14:26:06 +0300964 mr->terminates = true;
Avi Kivity545e92e2011-08-08 19:58:48 +0300965 mr->destructor = memory_region_destructor_ram_from_ptr;
Avi Kivityc5705a72011-12-20 15:59:12 +0200966 mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +0300967}
968
969void memory_region_init_alias(MemoryRegion *mr,
970 const char *name,
971 MemoryRegion *orig,
972 target_phys_addr_t offset,
973 uint64_t size)
974{
975 memory_region_init(mr, name, size);
976 mr->alias = orig;
977 mr->alias_offset = offset;
978}
979
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300980void memory_region_init_rom_device(MemoryRegion *mr,
981 const MemoryRegionOps *ops,
Avi Kivity75f59412011-08-26 00:35:15 +0300982 void *opaque,
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300983 const char *name,
984 uint64_t size)
985{
986 memory_region_init(mr, name, size);
Avi Kivity7bc2b9c2011-08-25 14:56:14 +0300987 mr->ops = ops;
Avi Kivity75f59412011-08-26 00:35:15 +0300988 mr->opaque = opaque;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300989 mr->terminates = true;
Avi Kivity75c578d2012-01-02 15:40:52 +0200990 mr->rom_device = true;
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300991 mr->destructor = memory_region_destructor_rom_device;
Avi Kivityc5705a72011-12-20 15:59:12 +0200992 mr->ram_addr = qemu_ram_alloc(size, mr);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +0300993}
994
Jan Kiszka1660e722011-10-23 16:01:19 +0200995static uint64_t invalid_read(void *opaque, target_phys_addr_t addr,
996 unsigned size)
997{
998 MemoryRegion *mr = opaque;
999
1000 if (!mr->warning_printed) {
1001 fprintf(stderr, "Invalid read from memory region %s\n", mr->name);
1002 mr->warning_printed = true;
1003 }
1004 return -1U;
1005}
1006
1007static void invalid_write(void *opaque, target_phys_addr_t addr, uint64_t data,
1008 unsigned size)
1009{
1010 MemoryRegion *mr = opaque;
1011
1012 if (!mr->warning_printed) {
1013 fprintf(stderr, "Invalid write to memory region %s\n", mr->name);
1014 mr->warning_printed = true;
1015 }
1016}
1017
1018static const MemoryRegionOps reservation_ops = {
1019 .read = invalid_read,
1020 .write = invalid_write,
1021 .endianness = DEVICE_NATIVE_ENDIAN,
1022};
1023
1024void memory_region_init_reservation(MemoryRegion *mr,
1025 const char *name,
1026 uint64_t size)
1027{
1028 memory_region_init_io(mr, &reservation_ops, mr, name, size);
1029}
1030
Avi Kivity093bc2c2011-07-26 14:26:01 +03001031void memory_region_destroy(MemoryRegion *mr)
1032{
1033 assert(QTAILQ_EMPTY(&mr->subregions));
Avi Kivity545e92e2011-08-08 19:58:48 +03001034 mr->destructor(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001035 memory_region_clear_coalescing(mr);
Anthony Liguori7267c092011-08-20 22:09:37 -05001036 g_free((char *)mr->name);
1037 g_free(mr->ioeventfds);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001038}
1039
1040uint64_t memory_region_size(MemoryRegion *mr)
1041{
Avi Kivity08dafab2011-10-16 13:19:17 +02001042 if (int128_eq(mr->size, int128_2_64())) {
1043 return UINT64_MAX;
1044 }
1045 return int128_get64(mr->size);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001046}
1047
Avi Kivity8991c792011-12-20 15:53:11 +02001048const char *memory_region_name(MemoryRegion *mr)
1049{
1050 return mr->name;
1051}
1052
Avi Kivity8ea92522011-12-08 15:58:43 +02001053bool memory_region_is_ram(MemoryRegion *mr)
1054{
1055 return mr->ram;
1056}
1057
Avi Kivity55043ba2011-12-15 17:20:34 +02001058bool memory_region_is_logging(MemoryRegion *mr)
1059{
1060 return mr->dirty_log_mask;
1061}
1062
Avi Kivityce7923d2011-12-08 16:05:11 +02001063bool memory_region_is_rom(MemoryRegion *mr)
1064{
1065 return mr->ram && mr->readonly;
1066}
1067
Avi Kivity093bc2c2011-07-26 14:26:01 +03001068void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
1069{
Avi Kivity5a583342011-07-26 14:26:02 +03001070 uint8_t mask = 1 << client;
1071
1072 mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
Avi Kivity6bba19b2011-09-14 11:54:58 +03001073 memory_region_update_topology(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001074}
1075
1076bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr,
Blue Swirlcd7a45c2012-01-22 16:38:21 +00001077 target_phys_addr_t size, unsigned client)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001078{
Avi Kivity14a3c102011-07-26 14:26:06 +03001079 assert(mr->terminates);
Blue Swirlcd7a45c2012-01-22 16:38:21 +00001080 return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size,
1081 1 << client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001082}
1083
Blue Swirlfd4aa972011-10-16 16:04:59 +00001084void memory_region_set_dirty(MemoryRegion *mr, target_phys_addr_t addr,
1085 target_phys_addr_t size)
Avi Kivity093bc2c2011-07-26 14:26:01 +03001086{
Avi Kivity14a3c102011-07-26 14:26:06 +03001087 assert(mr->terminates);
Blue Swirlfd4aa972011-10-16 16:04:59 +00001088 return cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size, -1);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001089}
1090
1091void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
1092{
Avi Kivity5a583342011-07-26 14:26:02 +03001093 FlatRange *fr;
1094
Avi Kivitycc31e6e2011-07-26 14:26:05 +03001095 FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) {
Avi Kivity5a583342011-07-26 14:26:02 +03001096 if (fr->mr == mr) {
Avi Kivity72e22d22012-02-08 15:05:50 +02001097 MEMORY_LISTENER_UPDATE_REGION(fr, &address_space_memory,
1098 Forward, log_sync);
Avi Kivity5a583342011-07-26 14:26:02 +03001099 }
1100 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001101}
1102
1103void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
1104{
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001105 if (mr->readonly != readonly) {
1106 mr->readonly = readonly;
Avi Kivity6bba19b2011-09-14 11:54:58 +03001107 memory_region_update_topology(mr);
Avi Kivityfb1cd6f2011-09-25 14:48:47 +03001108 }
Avi Kivity093bc2c2011-07-26 14:26:01 +03001109}
1110
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001111void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable)
1112{
1113 if (mr->readable != readable) {
1114 mr->readable = readable;
Avi Kivity6bba19b2011-09-14 11:54:58 +03001115 memory_region_update_topology(mr);
Avi Kivityd0a9b5b2011-08-08 19:58:49 +03001116 }
1117}
1118
Avi Kivity093bc2c2011-07-26 14:26:01 +03001119void memory_region_reset_dirty(MemoryRegion *mr, target_phys_addr_t addr,
1120 target_phys_addr_t size, unsigned client)
1121{
Avi Kivity14a3c102011-07-26 14:26:06 +03001122 assert(mr->terminates);
Avi Kivity5a583342011-07-26 14:26:02 +03001123 cpu_physical_memory_reset_dirty(mr->ram_addr + addr,
1124 mr->ram_addr + addr + size,
1125 1 << client);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001126}
1127
1128void *memory_region_get_ram_ptr(MemoryRegion *mr)
1129{
1130 if (mr->alias) {
1131 return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
1132 }
1133
Avi Kivity14a3c102011-07-26 14:26:06 +03001134 assert(mr->terminates);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001135
Jan Kiszka021d26d2011-08-30 00:38:24 +02001136 return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001137}
1138
1139static void memory_region_update_coalesced_range(MemoryRegion *mr)
1140{
1141 FlatRange *fr;
1142 CoalescedMemoryRange *cmr;
1143 AddrRange tmp;
1144
Avi Kivitycc31e6e2011-07-26 14:26:05 +03001145 FOR_EACH_FLAT_RANGE(fr, &address_space_memory.current_map) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001146 if (fr->mr == mr) {
Avi Kivity08dafab2011-10-16 13:19:17 +02001147 qemu_unregister_coalesced_mmio(int128_get64(fr->addr.start),
1148 int128_get64(fr->addr.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001149 QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
1150 tmp = addrrange_shift(cmr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001151 int128_sub(fr->addr.start,
1152 int128_make64(fr->offset_in_region)));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001153 if (!addrrange_intersects(tmp, fr->addr)) {
1154 continue;
1155 }
1156 tmp = addrrange_intersection(tmp, fr->addr);
Avi Kivity08dafab2011-10-16 13:19:17 +02001157 qemu_register_coalesced_mmio(int128_get64(tmp.start),
1158 int128_get64(tmp.size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001159 }
1160 }
1161 }
1162}
1163
1164void memory_region_set_coalescing(MemoryRegion *mr)
1165{
1166 memory_region_clear_coalescing(mr);
Avi Kivity08dafab2011-10-16 13:19:17 +02001167 memory_region_add_coalescing(mr, 0, int128_get64(mr->size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001168}
1169
1170void memory_region_add_coalescing(MemoryRegion *mr,
1171 target_phys_addr_t offset,
1172 uint64_t size)
1173{
Anthony Liguori7267c092011-08-20 22:09:37 -05001174 CoalescedMemoryRange *cmr = g_malloc(sizeof(*cmr));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001175
Avi Kivity08dafab2011-10-16 13:19:17 +02001176 cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
Avi Kivity093bc2c2011-07-26 14:26:01 +03001177 QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
1178 memory_region_update_coalesced_range(mr);
1179}
1180
1181void memory_region_clear_coalescing(MemoryRegion *mr)
1182{
1183 CoalescedMemoryRange *cmr;
1184
1185 while (!QTAILQ_EMPTY(&mr->coalesced)) {
1186 cmr = QTAILQ_FIRST(&mr->coalesced);
1187 QTAILQ_REMOVE(&mr->coalesced, cmr, link);
Anthony Liguori7267c092011-08-20 22:09:37 -05001188 g_free(cmr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001189 }
1190 memory_region_update_coalesced_range(mr);
1191}
1192
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001193void memory_region_add_eventfd(MemoryRegion *mr,
1194 target_phys_addr_t addr,
1195 unsigned size,
1196 bool match_data,
1197 uint64_t data,
1198 int fd)
1199{
1200 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02001201 .addr.start = int128_make64(addr),
1202 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001203 .match_data = match_data,
1204 .data = data,
1205 .fd = fd,
1206 };
1207 unsigned i;
1208
1209 for (i = 0; i < mr->ioeventfd_nb; ++i) {
1210 if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) {
1211 break;
1212 }
1213 }
1214 ++mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05001215 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001216 sizeof(*mr->ioeventfds) * mr->ioeventfd_nb);
1217 memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
1218 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
1219 mr->ioeventfds[i] = mrfd;
Avi Kivity6bba19b2011-09-14 11:54:58 +03001220 memory_region_update_topology(mr);
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001221}
1222
1223void memory_region_del_eventfd(MemoryRegion *mr,
1224 target_phys_addr_t addr,
1225 unsigned size,
1226 bool match_data,
1227 uint64_t data,
1228 int fd)
1229{
1230 MemoryRegionIoeventfd mrfd = {
Avi Kivity08dafab2011-10-16 13:19:17 +02001231 .addr.start = int128_make64(addr),
1232 .addr.size = int128_make64(size),
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001233 .match_data = match_data,
1234 .data = data,
1235 .fd = fd,
1236 };
1237 unsigned i;
1238
1239 for (i = 0; i < mr->ioeventfd_nb; ++i) {
1240 if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) {
1241 break;
1242 }
1243 }
1244 assert(i != mr->ioeventfd_nb);
1245 memmove(&mr->ioeventfds[i], &mr->ioeventfds[i+1],
1246 sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb - (i+1)));
1247 --mr->ioeventfd_nb;
Anthony Liguori7267c092011-08-20 22:09:37 -05001248 mr->ioeventfds = g_realloc(mr->ioeventfds,
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001249 sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
Avi Kivity6bba19b2011-09-14 11:54:58 +03001250 memory_region_update_topology(mr);
Avi Kivity3e9d69e2011-07-26 14:26:11 +03001251}
1252
Avi Kivity093bc2c2011-07-26 14:26:01 +03001253static void memory_region_add_subregion_common(MemoryRegion *mr,
1254 target_phys_addr_t offset,
1255 MemoryRegion *subregion)
1256{
1257 MemoryRegion *other;
1258
1259 assert(!subregion->parent);
1260 subregion->parent = mr;
1261 subregion->addr = offset;
1262 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
1263 if (subregion->may_overlap || other->may_overlap) {
1264 continue;
1265 }
Avi Kivity08dafab2011-10-16 13:19:17 +02001266 if (int128_gt(int128_make64(offset),
1267 int128_add(int128_make64(other->addr), other->size))
1268 || int128_le(int128_add(int128_make64(offset), subregion->size),
1269 int128_make64(other->addr))) {
Avi Kivity093bc2c2011-07-26 14:26:01 +03001270 continue;
1271 }
Anthony Liguoria5e1cbc2011-08-22 11:14:56 -05001272#if 0
Michael Walle860329b2011-09-15 23:16:49 +02001273 printf("warning: subregion collision %llx/%llx (%s) "
1274 "vs %llx/%llx (%s)\n",
Avi Kivity093bc2c2011-07-26 14:26:01 +03001275 (unsigned long long)offset,
Avi Kivity08dafab2011-10-16 13:19:17 +02001276 (unsigned long long)int128_get64(subregion->size),
Michael Walle860329b2011-09-15 23:16:49 +02001277 subregion->name,
1278 (unsigned long long)other->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001279 (unsigned long long)int128_get64(other->size),
Michael Walle860329b2011-09-15 23:16:49 +02001280 other->name);
Anthony Liguoria5e1cbc2011-08-22 11:14:56 -05001281#endif
Avi Kivity093bc2c2011-07-26 14:26:01 +03001282 }
1283 QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
1284 if (subregion->priority >= other->priority) {
1285 QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
1286 goto done;
1287 }
1288 }
1289 QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link);
1290done:
Avi Kivity6bba19b2011-09-14 11:54:58 +03001291 memory_region_update_topology(mr);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001292}
1293
1294
1295void memory_region_add_subregion(MemoryRegion *mr,
1296 target_phys_addr_t offset,
1297 MemoryRegion *subregion)
1298{
1299 subregion->may_overlap = false;
1300 subregion->priority = 0;
1301 memory_region_add_subregion_common(mr, offset, subregion);
1302}
1303
1304void memory_region_add_subregion_overlap(MemoryRegion *mr,
1305 target_phys_addr_t offset,
1306 MemoryRegion *subregion,
1307 unsigned priority)
1308{
1309 subregion->may_overlap = true;
1310 subregion->priority = priority;
1311 memory_region_add_subregion_common(mr, offset, subregion);
1312}
1313
1314void memory_region_del_subregion(MemoryRegion *mr,
1315 MemoryRegion *subregion)
1316{
1317 assert(subregion->parent == mr);
1318 subregion->parent = NULL;
1319 QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
Avi Kivity6bba19b2011-09-14 11:54:58 +03001320 memory_region_update_topology(mr);
1321}
1322
1323void memory_region_set_enabled(MemoryRegion *mr, bool enabled)
1324{
1325 if (enabled == mr->enabled) {
1326 return;
1327 }
1328 mr->enabled = enabled;
1329 memory_region_update_topology(NULL);
Avi Kivity093bc2c2011-07-26 14:26:01 +03001330}
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001331
Avi Kivity2282e1a2011-09-14 12:10:12 +03001332void memory_region_set_address(MemoryRegion *mr, target_phys_addr_t addr)
1333{
1334 MemoryRegion *parent = mr->parent;
1335 unsigned priority = mr->priority;
1336 bool may_overlap = mr->may_overlap;
1337
1338 if (addr == mr->addr || !parent) {
1339 mr->addr = addr;
1340 return;
1341 }
1342
1343 memory_region_transaction_begin();
1344 memory_region_del_subregion(parent, mr);
1345 if (may_overlap) {
1346 memory_region_add_subregion_overlap(parent, addr, mr, priority);
1347 } else {
1348 memory_region_add_subregion(parent, addr, mr);
1349 }
1350 memory_region_transaction_commit();
1351}
1352
Avi Kivity47033592011-12-04 19:16:50 +02001353void memory_region_set_alias_offset(MemoryRegion *mr, target_phys_addr_t offset)
1354{
1355 target_phys_addr_t old_offset = mr->alias_offset;
1356
1357 assert(mr->alias);
1358 mr->alias_offset = offset;
1359
1360 if (offset == old_offset || !mr->parent) {
1361 return;
1362 }
1363
1364 memory_region_update_topology(mr);
1365}
1366
Avi Kivitye34911c2011-12-19 12:06:23 +02001367ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
1368{
Avi Kivitye34911c2011-12-19 12:06:23 +02001369 return mr->ram_addr;
1370}
1371
Avi Kivitye2177952011-12-08 15:00:18 +02001372static int cmp_flatrange_addr(const void *addr_, const void *fr_)
1373{
1374 const AddrRange *addr = addr_;
1375 const FlatRange *fr = fr_;
1376
1377 if (int128_le(addrrange_end(*addr), fr->addr.start)) {
1378 return -1;
1379 } else if (int128_ge(addr->start, addrrange_end(fr->addr))) {
1380 return 1;
1381 }
1382 return 0;
1383}
1384
1385static FlatRange *address_space_lookup(AddressSpace *as, AddrRange addr)
1386{
1387 return bsearch(&addr, as->current_map.ranges, as->current_map.nr,
1388 sizeof(FlatRange), cmp_flatrange_addr);
1389}
1390
1391MemoryRegionSection memory_region_find(MemoryRegion *address_space,
1392 target_phys_addr_t addr, uint64_t size)
1393{
1394 AddressSpace *as = memory_region_to_address_space(address_space);
1395 AddrRange range = addrrange_make(int128_make64(addr),
1396 int128_make64(size));
1397 FlatRange *fr = address_space_lookup(as, range);
1398 MemoryRegionSection ret = { .mr = NULL, .size = 0 };
1399
1400 if (!fr) {
1401 return ret;
1402 }
1403
1404 while (fr > as->current_map.ranges
1405 && addrrange_intersects(fr[-1].addr, range)) {
1406 --fr;
1407 }
1408
1409 ret.mr = fr->mr;
1410 range = addrrange_intersection(range, fr->addr);
1411 ret.offset_within_region = fr->offset_in_region;
1412 ret.offset_within_region += int128_get64(int128_sub(range.start,
1413 fr->addr.start));
1414 ret.size = int128_get64(range.size);
1415 ret.offset_within_address_space = int128_get64(range.start);
Avi Kivity7a8499e2012-02-08 17:01:23 +02001416 ret.readonly = fr->readonly;
Avi Kivitye2177952011-12-08 15:00:18 +02001417 return ret;
1418}
1419
Avi Kivity86e775c2011-12-15 16:24:49 +02001420void memory_global_sync_dirty_bitmap(MemoryRegion *address_space)
1421{
Avi Kivity7664e802011-12-11 14:47:25 +02001422 AddressSpace *as = memory_region_to_address_space(address_space);
1423 FlatRange *fr;
1424
Avi Kivity7664e802011-12-11 14:47:25 +02001425 FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
Avi Kivity72e22d22012-02-08 15:05:50 +02001426 MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, log_sync);
Avi Kivity7664e802011-12-11 14:47:25 +02001427 }
1428}
1429
1430void memory_global_dirty_log_start(void)
1431{
Avi Kivity7664e802011-12-11 14:47:25 +02001432 global_dirty_log = true;
Avi Kivity7376e582012-02-08 21:05:17 +02001433 MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
Avi Kivity7664e802011-12-11 14:47:25 +02001434}
1435
1436void memory_global_dirty_log_stop(void)
1437{
Avi Kivity7664e802011-12-11 14:47:25 +02001438 global_dirty_log = false;
Avi Kivity7376e582012-02-08 21:05:17 +02001439 MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
Avi Kivity7664e802011-12-11 14:47:25 +02001440}
1441
1442static void listener_add_address_space(MemoryListener *listener,
1443 AddressSpace *as)
1444{
1445 FlatRange *fr;
1446
Julien Grall221b3a32012-04-04 15:15:41 +01001447 if (listener->address_space_filter
1448 && listener->address_space_filter != as->root) {
1449 return;
1450 }
1451
Avi Kivity7664e802011-12-11 14:47:25 +02001452 if (global_dirty_log) {
1453 listener->log_global_start(listener);
1454 }
1455 FOR_EACH_FLAT_RANGE(fr, &as->current_map) {
1456 MemoryRegionSection section = {
1457 .mr = fr->mr,
1458 .address_space = as->root,
1459 .offset_within_region = fr->offset_in_region,
1460 .size = int128_get64(fr->addr.size),
1461 .offset_within_address_space = int128_get64(fr->addr.start),
Avi Kivity7a8499e2012-02-08 17:01:23 +02001462 .readonly = fr->readonly,
Avi Kivity7664e802011-12-11 14:47:25 +02001463 };
1464 listener->region_add(listener, &section);
1465 }
1466}
1467
Avi Kivity7376e582012-02-08 21:05:17 +02001468void memory_listener_register(MemoryListener *listener, MemoryRegion *filter)
Avi Kivity7664e802011-12-11 14:47:25 +02001469{
Avi Kivity72e22d22012-02-08 15:05:50 +02001470 MemoryListener *other = NULL;
1471
Avi Kivity7376e582012-02-08 21:05:17 +02001472 listener->address_space_filter = filter;
Avi Kivity72e22d22012-02-08 15:05:50 +02001473 if (QTAILQ_EMPTY(&memory_listeners)
1474 || listener->priority >= QTAILQ_LAST(&memory_listeners,
1475 memory_listeners)->priority) {
1476 QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
1477 } else {
1478 QTAILQ_FOREACH(other, &memory_listeners, link) {
1479 if (listener->priority < other->priority) {
1480 break;
1481 }
1482 }
1483 QTAILQ_INSERT_BEFORE(other, listener, link);
1484 }
Avi Kivity7664e802011-12-11 14:47:25 +02001485 listener_add_address_space(listener, &address_space_memory);
1486 listener_add_address_space(listener, &address_space_io);
1487}
1488
1489void memory_listener_unregister(MemoryListener *listener)
1490{
Avi Kivity72e22d22012-02-08 15:05:50 +02001491 QTAILQ_REMOVE(&memory_listeners, listener, link);
Avi Kivity86e775c2011-12-15 16:24:49 +02001492}
Avi Kivitye2177952011-12-08 15:00:18 +02001493
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001494void set_system_memory_map(MemoryRegion *mr)
1495{
Avi Kivitycc31e6e2011-07-26 14:26:05 +03001496 address_space_memory.root = mr;
Avi Kivity6bba19b2011-09-14 11:54:58 +03001497 memory_region_update_topology(NULL);
Avi Kivity1c0ffa52011-07-26 14:26:04 +03001498}
Avi Kivity658b2222011-07-26 14:26:08 +03001499
1500void set_system_io_map(MemoryRegion *mr)
1501{
1502 address_space_io.root = mr;
Avi Kivity6bba19b2011-09-14 11:54:58 +03001503 memory_region_update_topology(NULL);
Avi Kivity658b2222011-07-26 14:26:08 +03001504}
Blue Swirl314e2982011-09-11 20:22:05 +00001505
Avi Kivity37ec01d2012-03-08 18:08:35 +02001506uint64_t io_mem_read(MemoryRegion *mr, target_phys_addr_t addr, unsigned size)
Avi Kivityacbbec52011-11-21 12:27:03 +02001507{
Avi Kivity37ec01d2012-03-08 18:08:35 +02001508 return memory_region_dispatch_read(mr, addr, size);
Avi Kivityacbbec52011-11-21 12:27:03 +02001509}
1510
Avi Kivity37ec01d2012-03-08 18:08:35 +02001511void io_mem_write(MemoryRegion *mr, target_phys_addr_t addr,
Avi Kivityacbbec52011-11-21 12:27:03 +02001512 uint64_t val, unsigned size)
1513{
Avi Kivity37ec01d2012-03-08 18:08:35 +02001514 memory_region_dispatch_write(mr, addr, val, size);
Avi Kivityacbbec52011-11-21 12:27:03 +02001515}
1516
Blue Swirl314e2982011-09-11 20:22:05 +00001517typedef struct MemoryRegionList MemoryRegionList;
1518
1519struct MemoryRegionList {
1520 const MemoryRegion *mr;
1521 bool printed;
1522 QTAILQ_ENTRY(MemoryRegionList) queue;
1523};
1524
1525typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
1526
1527static void mtree_print_mr(fprintf_function mon_printf, void *f,
1528 const MemoryRegion *mr, unsigned int level,
1529 target_phys_addr_t base,
Jan Kiszka9479c572011-09-27 15:00:41 +02001530 MemoryRegionListHead *alias_print_queue)
Blue Swirl314e2982011-09-11 20:22:05 +00001531{
Jan Kiszka9479c572011-09-27 15:00:41 +02001532 MemoryRegionList *new_ml, *ml, *next_ml;
1533 MemoryRegionListHead submr_print_queue;
Blue Swirl314e2982011-09-11 20:22:05 +00001534 const MemoryRegion *submr;
1535 unsigned int i;
1536
Blue Swirl314e2982011-09-11 20:22:05 +00001537 if (!mr) {
1538 return;
1539 }
1540
1541 for (i = 0; i < level; i++) {
1542 mon_printf(f, " ");
1543 }
1544
1545 if (mr->alias) {
1546 MemoryRegionList *ml;
1547 bool found = false;
1548
1549 /* check if the alias is already in the queue */
Jan Kiszka9479c572011-09-27 15:00:41 +02001550 QTAILQ_FOREACH(ml, alias_print_queue, queue) {
Blue Swirl314e2982011-09-11 20:22:05 +00001551 if (ml->mr == mr->alias && !ml->printed) {
1552 found = true;
1553 }
1554 }
1555
1556 if (!found) {
1557 ml = g_new(MemoryRegionList, 1);
1558 ml->mr = mr->alias;
1559 ml->printed = false;
Jan Kiszka9479c572011-09-27 15:00:41 +02001560 QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue);
Blue Swirl314e2982011-09-11 20:22:05 +00001561 }
Jan Kiszka4896d742012-02-04 16:25:42 +01001562 mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
1563 " (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
1564 "-" TARGET_FMT_plx "\n",
Blue Swirl314e2982011-09-11 20:22:05 +00001565 base + mr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001566 base + mr->addr
1567 + (target_phys_addr_t)int128_get64(mr->size) - 1,
Jan Kiszka4b474ba2011-09-27 15:00:31 +02001568 mr->priority,
Jan Kiszka4896d742012-02-04 16:25:42 +01001569 mr->readable ? 'R' : '-',
1570 !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
1571 : '-',
Blue Swirl314e2982011-09-11 20:22:05 +00001572 mr->name,
1573 mr->alias->name,
1574 mr->alias_offset,
Avi Kivity08dafab2011-10-16 13:19:17 +02001575 mr->alias_offset
1576 + (target_phys_addr_t)int128_get64(mr->size) - 1);
Blue Swirl314e2982011-09-11 20:22:05 +00001577 } else {
Jan Kiszka4896d742012-02-04 16:25:42 +01001578 mon_printf(f,
1579 TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
Blue Swirl314e2982011-09-11 20:22:05 +00001580 base + mr->addr,
Avi Kivity08dafab2011-10-16 13:19:17 +02001581 base + mr->addr
1582 + (target_phys_addr_t)int128_get64(mr->size) - 1,
Jan Kiszka4b474ba2011-09-27 15:00:31 +02001583 mr->priority,
Jan Kiszka4896d742012-02-04 16:25:42 +01001584 mr->readable ? 'R' : '-',
1585 !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
1586 : '-',
Blue Swirl314e2982011-09-11 20:22:05 +00001587 mr->name);
1588 }
Jan Kiszka9479c572011-09-27 15:00:41 +02001589
1590 QTAILQ_INIT(&submr_print_queue);
1591
Blue Swirl314e2982011-09-11 20:22:05 +00001592 QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
Jan Kiszka9479c572011-09-27 15:00:41 +02001593 new_ml = g_new(MemoryRegionList, 1);
1594 new_ml->mr = submr;
1595 QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
1596 if (new_ml->mr->addr < ml->mr->addr ||
1597 (new_ml->mr->addr == ml->mr->addr &&
1598 new_ml->mr->priority > ml->mr->priority)) {
1599 QTAILQ_INSERT_BEFORE(ml, new_ml, queue);
1600 new_ml = NULL;
1601 break;
1602 }
1603 }
1604 if (new_ml) {
1605 QTAILQ_INSERT_TAIL(&submr_print_queue, new_ml, queue);
1606 }
1607 }
1608
1609 QTAILQ_FOREACH(ml, &submr_print_queue, queue) {
1610 mtree_print_mr(mon_printf, f, ml->mr, level + 1, base + mr->addr,
1611 alias_print_queue);
1612 }
1613
Avi Kivity88365e42011-11-13 12:00:55 +02001614 QTAILQ_FOREACH_SAFE(ml, &submr_print_queue, queue, next_ml) {
Jan Kiszka9479c572011-09-27 15:00:41 +02001615 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00001616 }
1617}
1618
1619void mtree_info(fprintf_function mon_printf, void *f)
1620{
1621 MemoryRegionListHead ml_head;
1622 MemoryRegionList *ml, *ml2;
1623
1624 QTAILQ_INIT(&ml_head);
1625
1626 mon_printf(f, "memory\n");
1627 mtree_print_mr(mon_printf, f, address_space_memory.root, 0, 0, &ml_head);
1628
Blue Swirlb9f9be82012-03-10 16:58:35 +00001629 if (address_space_io.root &&
1630 !QTAILQ_EMPTY(&address_space_io.root->subregions)) {
1631 mon_printf(f, "I/O\n");
1632 mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
1633 }
1634
1635 mon_printf(f, "aliases\n");
Blue Swirl314e2982011-09-11 20:22:05 +00001636 /* print aliased regions */
1637 QTAILQ_FOREACH(ml, &ml_head, queue) {
1638 if (!ml->printed) {
1639 mon_printf(f, "%s\n", ml->mr->name);
1640 mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head);
1641 }
1642 }
1643
1644 QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
Avi Kivity88365e42011-11-13 12:00:55 +02001645 g_free(ml);
Blue Swirl314e2982011-09-11 20:22:05 +00001646 }
Blue Swirl314e2982011-09-11 20:22:05 +00001647}