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Commit | Line | Data |
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54936004 | 1 | /* |
5b6dd868 | 2 | * Virtual page mapping |
5fafdf24 | 3 | * |
54936004 FB |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
54936004 | 18 | */ |
67b915a5 | 19 | #include "config.h" |
777872e5 | 20 | #ifndef _WIN32 |
a98d49b1 | 21 | #include <sys/types.h> |
d5a8f07c FB |
22 | #include <sys/mman.h> |
23 | #endif | |
54936004 | 24 | |
055403b2 | 25 | #include "qemu-common.h" |
6180a181 | 26 | #include "cpu.h" |
b67d9a52 | 27 | #include "tcg.h" |
b3c7724c | 28 | #include "hw/hw.h" |
cc9e98cb | 29 | #include "hw/qdev.h" |
1de7afc9 | 30 | #include "qemu/osdep.h" |
9c17d615 | 31 | #include "sysemu/kvm.h" |
2ff3de68 | 32 | #include "sysemu/sysemu.h" |
0d09e41a | 33 | #include "hw/xen/xen.h" |
1de7afc9 PB |
34 | #include "qemu/timer.h" |
35 | #include "qemu/config-file.h" | |
75a34036 | 36 | #include "qemu/error-report.h" |
022c62cb | 37 | #include "exec/memory.h" |
9c17d615 | 38 | #include "sysemu/dma.h" |
022c62cb | 39 | #include "exec/address-spaces.h" |
53a5960a PB |
40 | #if defined(CONFIG_USER_ONLY) |
41 | #include <qemu.h> | |
432d268c | 42 | #else /* !CONFIG_USER_ONLY */ |
9c17d615 | 43 | #include "sysemu/xen-mapcache.h" |
6506e4f9 | 44 | #include "trace.h" |
53a5960a | 45 | #endif |
0d6d3c87 | 46 | #include "exec/cpu-all.h" |
54936004 | 47 | |
022c62cb | 48 | #include "exec/cputlb.h" |
5b6dd868 | 49 | #include "translate-all.h" |
0cac1b66 | 50 | |
022c62cb | 51 | #include "exec/memory-internal.h" |
220c3ebd | 52 | #include "exec/ram_addr.h" |
582b55a9 | 53 | #include "qemu/cache-utils.h" |
67d95c15 | 54 | |
b35ba30f MT |
55 | #include "qemu/range.h" |
56 | ||
db7b5426 | 57 | //#define DEBUG_SUBPAGE |
1196be37 | 58 | |
e2eef170 | 59 | #if !defined(CONFIG_USER_ONLY) |
981fdf23 | 60 | static bool in_migration; |
94a6b54f | 61 | |
a3161038 | 62 | RAMList ram_list = { .blocks = QTAILQ_HEAD_INITIALIZER(ram_list.blocks) }; |
62152b8a AK |
63 | |
64 | static MemoryRegion *system_memory; | |
309cb471 | 65 | static MemoryRegion *system_io; |
62152b8a | 66 | |
f6790af6 AK |
67 | AddressSpace address_space_io; |
68 | AddressSpace address_space_memory; | |
2673a5da | 69 | |
0844e007 | 70 | MemoryRegion io_mem_rom, io_mem_notdirty; |
acc9d80b | 71 | static MemoryRegion io_mem_unassigned; |
0e0df1e2 | 72 | |
e2eef170 | 73 | #endif |
9fa3e853 | 74 | |
bdc44640 | 75 | struct CPUTailQ cpus = QTAILQ_HEAD_INITIALIZER(cpus); |
6a00d601 FB |
76 | /* current CPU in the current thread. It is only valid inside |
77 | cpu_exec() */ | |
4917cf44 | 78 | DEFINE_TLS(CPUState *, current_cpu); |
2e70f6ef | 79 | /* 0 = Do not count executed instructions. |
bf20dc07 | 80 | 1 = Precise instruction counting. |
2e70f6ef | 81 | 2 = Adaptive rate instruction counting. */ |
5708fc66 | 82 | int use_icount; |
6a00d601 | 83 | |
e2eef170 | 84 | #if !defined(CONFIG_USER_ONLY) |
4346ae3e | 85 | |
1db8abb1 PB |
86 | typedef struct PhysPageEntry PhysPageEntry; |
87 | ||
88 | struct PhysPageEntry { | |
9736e55b | 89 | /* How many bits skip to next level (in units of L2_SIZE). 0 for a leaf. */ |
8b795765 | 90 | uint32_t skip : 6; |
9736e55b | 91 | /* index into phys_sections (!skip) or phys_map_nodes (skip) */ |
8b795765 | 92 | uint32_t ptr : 26; |
1db8abb1 PB |
93 | }; |
94 | ||
8b795765 MT |
95 | #define PHYS_MAP_NODE_NIL (((uint32_t)~0) >> 6) |
96 | ||
03f49957 | 97 | /* Size of the L2 (and L3, etc) page tables. */ |
57271d63 | 98 | #define ADDR_SPACE_BITS 64 |
03f49957 | 99 | |
026736ce | 100 | #define P_L2_BITS 9 |
03f49957 PB |
101 | #define P_L2_SIZE (1 << P_L2_BITS) |
102 | ||
103 | #define P_L2_LEVELS (((ADDR_SPACE_BITS - TARGET_PAGE_BITS - 1) / P_L2_BITS) + 1) | |
104 | ||
105 | typedef PhysPageEntry Node[P_L2_SIZE]; | |
0475d94f | 106 | |
53cb28cb MA |
107 | typedef struct PhysPageMap { |
108 | unsigned sections_nb; | |
109 | unsigned sections_nb_alloc; | |
110 | unsigned nodes_nb; | |
111 | unsigned nodes_nb_alloc; | |
112 | Node *nodes; | |
113 | MemoryRegionSection *sections; | |
114 | } PhysPageMap; | |
115 | ||
1db8abb1 PB |
116 | struct AddressSpaceDispatch { |
117 | /* This is a multi-level map on the physical address space. | |
118 | * The bottom level has pointers to MemoryRegionSections. | |
119 | */ | |
120 | PhysPageEntry phys_map; | |
53cb28cb | 121 | PhysPageMap map; |
acc9d80b | 122 | AddressSpace *as; |
1db8abb1 PB |
123 | }; |
124 | ||
90260c6c JK |
125 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
126 | typedef struct subpage_t { | |
127 | MemoryRegion iomem; | |
acc9d80b | 128 | AddressSpace *as; |
90260c6c JK |
129 | hwaddr base; |
130 | uint16_t sub_section[TARGET_PAGE_SIZE]; | |
131 | } subpage_t; | |
132 | ||
b41aac4f LPF |
133 | #define PHYS_SECTION_UNASSIGNED 0 |
134 | #define PHYS_SECTION_NOTDIRTY 1 | |
135 | #define PHYS_SECTION_ROM 2 | |
136 | #define PHYS_SECTION_WATCH 3 | |
5312bd8b | 137 | |
e2eef170 | 138 | static void io_mem_init(void); |
62152b8a | 139 | static void memory_map_init(void); |
09daed84 | 140 | static void tcg_commit(MemoryListener *listener); |
e2eef170 | 141 | |
1ec9b909 | 142 | static MemoryRegion io_mem_watch; |
6658ffb8 | 143 | #endif |
fd6ce8f6 | 144 | |
6d9a1304 | 145 | #if !defined(CONFIG_USER_ONLY) |
d6f2ea22 | 146 | |
53cb28cb | 147 | static void phys_map_node_reserve(PhysPageMap *map, unsigned nodes) |
d6f2ea22 | 148 | { |
53cb28cb MA |
149 | if (map->nodes_nb + nodes > map->nodes_nb_alloc) { |
150 | map->nodes_nb_alloc = MAX(map->nodes_nb_alloc * 2, 16); | |
151 | map->nodes_nb_alloc = MAX(map->nodes_nb_alloc, map->nodes_nb + nodes); | |
152 | map->nodes = g_renew(Node, map->nodes, map->nodes_nb_alloc); | |
d6f2ea22 | 153 | } |
f7bf5461 AK |
154 | } |
155 | ||
53cb28cb | 156 | static uint32_t phys_map_node_alloc(PhysPageMap *map) |
f7bf5461 AK |
157 | { |
158 | unsigned i; | |
8b795765 | 159 | uint32_t ret; |
f7bf5461 | 160 | |
53cb28cb | 161 | ret = map->nodes_nb++; |
f7bf5461 | 162 | assert(ret != PHYS_MAP_NODE_NIL); |
53cb28cb | 163 | assert(ret != map->nodes_nb_alloc); |
03f49957 | 164 | for (i = 0; i < P_L2_SIZE; ++i) { |
53cb28cb MA |
165 | map->nodes[ret][i].skip = 1; |
166 | map->nodes[ret][i].ptr = PHYS_MAP_NODE_NIL; | |
d6f2ea22 | 167 | } |
f7bf5461 | 168 | return ret; |
d6f2ea22 AK |
169 | } |
170 | ||
53cb28cb MA |
171 | static void phys_page_set_level(PhysPageMap *map, PhysPageEntry *lp, |
172 | hwaddr *index, hwaddr *nb, uint16_t leaf, | |
2999097b | 173 | int level) |
f7bf5461 AK |
174 | { |
175 | PhysPageEntry *p; | |
176 | int i; | |
03f49957 | 177 | hwaddr step = (hwaddr)1 << (level * P_L2_BITS); |
108c49b8 | 178 | |
9736e55b | 179 | if (lp->skip && lp->ptr == PHYS_MAP_NODE_NIL) { |
53cb28cb MA |
180 | lp->ptr = phys_map_node_alloc(map); |
181 | p = map->nodes[lp->ptr]; | |
f7bf5461 | 182 | if (level == 0) { |
03f49957 | 183 | for (i = 0; i < P_L2_SIZE; i++) { |
9736e55b | 184 | p[i].skip = 0; |
b41aac4f | 185 | p[i].ptr = PHYS_SECTION_UNASSIGNED; |
4346ae3e | 186 | } |
67c4d23c | 187 | } |
f7bf5461 | 188 | } else { |
53cb28cb | 189 | p = map->nodes[lp->ptr]; |
92e873b9 | 190 | } |
03f49957 | 191 | lp = &p[(*index >> (level * P_L2_BITS)) & (P_L2_SIZE - 1)]; |
f7bf5461 | 192 | |
03f49957 | 193 | while (*nb && lp < &p[P_L2_SIZE]) { |
07f07b31 | 194 | if ((*index & (step - 1)) == 0 && *nb >= step) { |
9736e55b | 195 | lp->skip = 0; |
c19e8800 | 196 | lp->ptr = leaf; |
07f07b31 AK |
197 | *index += step; |
198 | *nb -= step; | |
2999097b | 199 | } else { |
53cb28cb | 200 | phys_page_set_level(map, lp, index, nb, leaf, level - 1); |
2999097b AK |
201 | } |
202 | ++lp; | |
f7bf5461 AK |
203 | } |
204 | } | |
205 | ||
ac1970fb | 206 | static void phys_page_set(AddressSpaceDispatch *d, |
a8170e5e | 207 | hwaddr index, hwaddr nb, |
2999097b | 208 | uint16_t leaf) |
f7bf5461 | 209 | { |
2999097b | 210 | /* Wildly overreserve - it doesn't matter much. */ |
53cb28cb | 211 | phys_map_node_reserve(&d->map, 3 * P_L2_LEVELS); |
5cd2c5b6 | 212 | |
53cb28cb | 213 | phys_page_set_level(&d->map, &d->phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); |
92e873b9 FB |
214 | } |
215 | ||
b35ba30f MT |
216 | /* Compact a non leaf page entry. Simply detect that the entry has a single child, |
217 | * and update our entry so we can skip it and go directly to the destination. | |
218 | */ | |
219 | static void phys_page_compact(PhysPageEntry *lp, Node *nodes, unsigned long *compacted) | |
220 | { | |
221 | unsigned valid_ptr = P_L2_SIZE; | |
222 | int valid = 0; | |
223 | PhysPageEntry *p; | |
224 | int i; | |
225 | ||
226 | if (lp->ptr == PHYS_MAP_NODE_NIL) { | |
227 | return; | |
228 | } | |
229 | ||
230 | p = nodes[lp->ptr]; | |
231 | for (i = 0; i < P_L2_SIZE; i++) { | |
232 | if (p[i].ptr == PHYS_MAP_NODE_NIL) { | |
233 | continue; | |
234 | } | |
235 | ||
236 | valid_ptr = i; | |
237 | valid++; | |
238 | if (p[i].skip) { | |
239 | phys_page_compact(&p[i], nodes, compacted); | |
240 | } | |
241 | } | |
242 | ||
243 | /* We can only compress if there's only one child. */ | |
244 | if (valid != 1) { | |
245 | return; | |
246 | } | |
247 | ||
248 | assert(valid_ptr < P_L2_SIZE); | |
249 | ||
250 | /* Don't compress if it won't fit in the # of bits we have. */ | |
251 | if (lp->skip + p[valid_ptr].skip >= (1 << 3)) { | |
252 | return; | |
253 | } | |
254 | ||
255 | lp->ptr = p[valid_ptr].ptr; | |
256 | if (!p[valid_ptr].skip) { | |
257 | /* If our only child is a leaf, make this a leaf. */ | |
258 | /* By design, we should have made this node a leaf to begin with so we | |
259 | * should never reach here. | |
260 | * But since it's so simple to handle this, let's do it just in case we | |
261 | * change this rule. | |
262 | */ | |
263 | lp->skip = 0; | |
264 | } else { | |
265 | lp->skip += p[valid_ptr].skip; | |
266 | } | |
267 | } | |
268 | ||
269 | static void phys_page_compact_all(AddressSpaceDispatch *d, int nodes_nb) | |
270 | { | |
271 | DECLARE_BITMAP(compacted, nodes_nb); | |
272 | ||
273 | if (d->phys_map.skip) { | |
53cb28cb | 274 | phys_page_compact(&d->phys_map, d->map.nodes, compacted); |
b35ba30f MT |
275 | } |
276 | } | |
277 | ||
97115a8d | 278 | static MemoryRegionSection *phys_page_find(PhysPageEntry lp, hwaddr addr, |
9affd6fc | 279 | Node *nodes, MemoryRegionSection *sections) |
92e873b9 | 280 | { |
31ab2b4a | 281 | PhysPageEntry *p; |
97115a8d | 282 | hwaddr index = addr >> TARGET_PAGE_BITS; |
31ab2b4a | 283 | int i; |
f1f6e3b8 | 284 | |
9736e55b | 285 | for (i = P_L2_LEVELS; lp.skip && (i -= lp.skip) >= 0;) { |
c19e8800 | 286 | if (lp.ptr == PHYS_MAP_NODE_NIL) { |
9affd6fc | 287 | return §ions[PHYS_SECTION_UNASSIGNED]; |
31ab2b4a | 288 | } |
9affd6fc | 289 | p = nodes[lp.ptr]; |
03f49957 | 290 | lp = p[(index >> (i * P_L2_BITS)) & (P_L2_SIZE - 1)]; |
5312bd8b | 291 | } |
b35ba30f MT |
292 | |
293 | if (sections[lp.ptr].size.hi || | |
294 | range_covers_byte(sections[lp.ptr].offset_within_address_space, | |
295 | sections[lp.ptr].size.lo, addr)) { | |
296 | return §ions[lp.ptr]; | |
297 | } else { | |
298 | return §ions[PHYS_SECTION_UNASSIGNED]; | |
299 | } | |
f3705d53 AK |
300 | } |
301 | ||
e5548617 BS |
302 | bool memory_region_is_unassigned(MemoryRegion *mr) |
303 | { | |
2a8e7499 | 304 | return mr != &io_mem_rom && mr != &io_mem_notdirty && !mr->rom_device |
5b6dd868 | 305 | && mr != &io_mem_watch; |
fd6ce8f6 | 306 | } |
149f54b5 | 307 | |
c7086b4a | 308 | static MemoryRegionSection *address_space_lookup_region(AddressSpaceDispatch *d, |
90260c6c JK |
309 | hwaddr addr, |
310 | bool resolve_subpage) | |
9f029603 | 311 | { |
90260c6c JK |
312 | MemoryRegionSection *section; |
313 | subpage_t *subpage; | |
314 | ||
53cb28cb | 315 | section = phys_page_find(d->phys_map, addr, d->map.nodes, d->map.sections); |
90260c6c JK |
316 | if (resolve_subpage && section->mr->subpage) { |
317 | subpage = container_of(section->mr, subpage_t, iomem); | |
53cb28cb | 318 | section = &d->map.sections[subpage->sub_section[SUBPAGE_IDX(addr)]]; |
90260c6c JK |
319 | } |
320 | return section; | |
9f029603 JK |
321 | } |
322 | ||
90260c6c | 323 | static MemoryRegionSection * |
c7086b4a | 324 | address_space_translate_internal(AddressSpaceDispatch *d, hwaddr addr, hwaddr *xlat, |
90260c6c | 325 | hwaddr *plen, bool resolve_subpage) |
149f54b5 PB |
326 | { |
327 | MemoryRegionSection *section; | |
a87f3954 | 328 | Int128 diff; |
149f54b5 | 329 | |
c7086b4a | 330 | section = address_space_lookup_region(d, addr, resolve_subpage); |
149f54b5 PB |
331 | /* Compute offset within MemoryRegionSection */ |
332 | addr -= section->offset_within_address_space; | |
333 | ||
334 | /* Compute offset within MemoryRegion */ | |
335 | *xlat = addr + section->offset_within_region; | |
336 | ||
337 | diff = int128_sub(section->mr->size, int128_make64(addr)); | |
3752a036 | 338 | *plen = int128_get64(int128_min(diff, int128_make64(*plen))); |
149f54b5 PB |
339 | return section; |
340 | } | |
90260c6c | 341 | |
a87f3954 PB |
342 | static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write) |
343 | { | |
344 | if (memory_region_is_ram(mr)) { | |
345 | return !(is_write && mr->readonly); | |
346 | } | |
347 | if (memory_region_is_romd(mr)) { | |
348 | return !is_write; | |
349 | } | |
350 | ||
351 | return false; | |
352 | } | |
353 | ||
5c8a00ce PB |
354 | MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr, |
355 | hwaddr *xlat, hwaddr *plen, | |
356 | bool is_write) | |
90260c6c | 357 | { |
30951157 AK |
358 | IOMMUTLBEntry iotlb; |
359 | MemoryRegionSection *section; | |
360 | MemoryRegion *mr; | |
361 | hwaddr len = *plen; | |
362 | ||
363 | for (;;) { | |
a87f3954 | 364 | section = address_space_translate_internal(as->dispatch, addr, &addr, plen, true); |
30951157 AK |
365 | mr = section->mr; |
366 | ||
367 | if (!mr->iommu_ops) { | |
368 | break; | |
369 | } | |
370 | ||
371 | iotlb = mr->iommu_ops->translate(mr, addr); | |
372 | addr = ((iotlb.translated_addr & ~iotlb.addr_mask) | |
373 | | (addr & iotlb.addr_mask)); | |
374 | len = MIN(len, (addr | iotlb.addr_mask) - addr + 1); | |
375 | if (!(iotlb.perm & (1 << is_write))) { | |
376 | mr = &io_mem_unassigned; | |
377 | break; | |
378 | } | |
379 | ||
380 | as = iotlb.target_as; | |
381 | } | |
382 | ||
a87f3954 PB |
383 | if (memory_access_is_direct(mr, is_write)) { |
384 | hwaddr page = ((addr & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE) - addr; | |
385 | len = MIN(page, len); | |
386 | } | |
387 | ||
30951157 AK |
388 | *plen = len; |
389 | *xlat = addr; | |
390 | return mr; | |
90260c6c JK |
391 | } |
392 | ||
393 | MemoryRegionSection * | |
394 | address_space_translate_for_iotlb(AddressSpace *as, hwaddr addr, hwaddr *xlat, | |
395 | hwaddr *plen) | |
396 | { | |
30951157 | 397 | MemoryRegionSection *section; |
c7086b4a | 398 | section = address_space_translate_internal(as->dispatch, addr, xlat, plen, false); |
30951157 AK |
399 | |
400 | assert(!section->mr->iommu_ops); | |
401 | return section; | |
90260c6c | 402 | } |
5b6dd868 | 403 | #endif |
fd6ce8f6 | 404 | |
5b6dd868 | 405 | void cpu_exec_init_all(void) |
fdbb84d1 | 406 | { |
5b6dd868 | 407 | #if !defined(CONFIG_USER_ONLY) |
b2a8658e | 408 | qemu_mutex_init(&ram_list.mutex); |
5b6dd868 BS |
409 | memory_map_init(); |
410 | io_mem_init(); | |
fdbb84d1 | 411 | #endif |
5b6dd868 | 412 | } |
fdbb84d1 | 413 | |
b170fce3 | 414 | #if !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
415 | |
416 | static int cpu_common_post_load(void *opaque, int version_id) | |
fd6ce8f6 | 417 | { |
259186a7 | 418 | CPUState *cpu = opaque; |
a513fe19 | 419 | |
5b6dd868 BS |
420 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
421 | version_id is increased. */ | |
259186a7 AF |
422 | cpu->interrupt_request &= ~0x01; |
423 | tlb_flush(cpu->env_ptr, 1); | |
5b6dd868 BS |
424 | |
425 | return 0; | |
a513fe19 | 426 | } |
7501267e | 427 | |
1a1562f5 | 428 | const VMStateDescription vmstate_cpu_common = { |
5b6dd868 BS |
429 | .name = "cpu_common", |
430 | .version_id = 1, | |
431 | .minimum_version_id = 1, | |
432 | .minimum_version_id_old = 1, | |
433 | .post_load = cpu_common_post_load, | |
434 | .fields = (VMStateField []) { | |
259186a7 AF |
435 | VMSTATE_UINT32(halted, CPUState), |
436 | VMSTATE_UINT32(interrupt_request, CPUState), | |
5b6dd868 BS |
437 | VMSTATE_END_OF_LIST() |
438 | } | |
439 | }; | |
1a1562f5 | 440 | |
5b6dd868 | 441 | #endif |
ea041c0e | 442 | |
38d8f5c8 | 443 | CPUState *qemu_get_cpu(int index) |
ea041c0e | 444 | { |
bdc44640 | 445 | CPUState *cpu; |
ea041c0e | 446 | |
bdc44640 | 447 | CPU_FOREACH(cpu) { |
55e5c285 | 448 | if (cpu->cpu_index == index) { |
bdc44640 | 449 | return cpu; |
55e5c285 | 450 | } |
ea041c0e | 451 | } |
5b6dd868 | 452 | |
bdc44640 | 453 | return NULL; |
ea041c0e FB |
454 | } |
455 | ||
09daed84 EI |
456 | #if !defined(CONFIG_USER_ONLY) |
457 | void tcg_cpu_address_space_init(CPUState *cpu, AddressSpace *as) | |
458 | { | |
459 | /* We only support one address space per cpu at the moment. */ | |
460 | assert(cpu->as == as); | |
461 | ||
462 | if (cpu->tcg_as_listener) { | |
463 | memory_listener_unregister(cpu->tcg_as_listener); | |
464 | } else { | |
465 | cpu->tcg_as_listener = g_new0(MemoryListener, 1); | |
466 | } | |
467 | cpu->tcg_as_listener->commit = tcg_commit; | |
468 | memory_listener_register(cpu->tcg_as_listener, as); | |
469 | } | |
470 | #endif | |
471 | ||
5b6dd868 | 472 | void cpu_exec_init(CPUArchState *env) |
ea041c0e | 473 | { |
5b6dd868 | 474 | CPUState *cpu = ENV_GET_CPU(env); |
b170fce3 | 475 | CPUClass *cc = CPU_GET_CLASS(cpu); |
bdc44640 | 476 | CPUState *some_cpu; |
5b6dd868 BS |
477 | int cpu_index; |
478 | ||
479 | #if defined(CONFIG_USER_ONLY) | |
480 | cpu_list_lock(); | |
481 | #endif | |
5b6dd868 | 482 | cpu_index = 0; |
bdc44640 | 483 | CPU_FOREACH(some_cpu) { |
5b6dd868 BS |
484 | cpu_index++; |
485 | } | |
55e5c285 | 486 | cpu->cpu_index = cpu_index; |
1b1ed8dc | 487 | cpu->numa_node = 0; |
f0c3c505 | 488 | QTAILQ_INIT(&cpu->breakpoints); |
ff4700b0 | 489 | QTAILQ_INIT(&cpu->watchpoints); |
5b6dd868 | 490 | #ifndef CONFIG_USER_ONLY |
09daed84 | 491 | cpu->as = &address_space_memory; |
5b6dd868 BS |
492 | cpu->thread_id = qemu_get_thread_id(); |
493 | #endif | |
bdc44640 | 494 | QTAILQ_INSERT_TAIL(&cpus, cpu, node); |
5b6dd868 BS |
495 | #if defined(CONFIG_USER_ONLY) |
496 | cpu_list_unlock(); | |
497 | #endif | |
e0d47944 AF |
498 | if (qdev_get_vmsd(DEVICE(cpu)) == NULL) { |
499 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, cpu); | |
500 | } | |
5b6dd868 | 501 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
502 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, |
503 | cpu_save, cpu_load, env); | |
b170fce3 | 504 | assert(cc->vmsd == NULL); |
e0d47944 | 505 | assert(qdev_get_vmsd(DEVICE(cpu)) == NULL); |
5b6dd868 | 506 | #endif |
b170fce3 AF |
507 | if (cc->vmsd != NULL) { |
508 | vmstate_register(NULL, cpu_index, cc->vmsd, cpu); | |
509 | } | |
ea041c0e FB |
510 | } |
511 | ||
1fddef4b | 512 | #if defined(TARGET_HAS_ICE) |
94df27fd | 513 | #if defined(CONFIG_USER_ONLY) |
00b941e5 | 514 | static void breakpoint_invalidate(CPUState *cpu, target_ulong pc) |
94df27fd PB |
515 | { |
516 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
517 | } | |
518 | #else | |
00b941e5 | 519 | static void breakpoint_invalidate(CPUState *cpu, target_ulong pc) |
1e7855a5 | 520 | { |
e8262a1b MF |
521 | hwaddr phys = cpu_get_phys_page_debug(cpu, pc); |
522 | if (phys != -1) { | |
09daed84 | 523 | tb_invalidate_phys_addr(cpu->as, |
29d8ec7b | 524 | phys | (pc & ~TARGET_PAGE_MASK)); |
e8262a1b | 525 | } |
1e7855a5 | 526 | } |
c27004ec | 527 | #endif |
94df27fd | 528 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 529 | |
c527ee8f | 530 | #if defined(CONFIG_USER_ONLY) |
75a34036 | 531 | void cpu_watchpoint_remove_all(CPUState *cpu, int mask) |
c527ee8f PB |
532 | |
533 | { | |
534 | } | |
535 | ||
75a34036 | 536 | int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len, |
c527ee8f PB |
537 | int flags, CPUWatchpoint **watchpoint) |
538 | { | |
539 | return -ENOSYS; | |
540 | } | |
541 | #else | |
6658ffb8 | 542 | /* Add a watchpoint. */ |
75a34036 | 543 | int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len, |
a1d1bb31 | 544 | int flags, CPUWatchpoint **watchpoint) |
6658ffb8 | 545 | { |
75a34036 AF |
546 | CPUArchState *env = cpu->env_ptr; |
547 | vaddr len_mask = ~(len - 1); | |
c0ce998e | 548 | CPUWatchpoint *wp; |
6658ffb8 | 549 | |
b4051334 | 550 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
0dc23828 MF |
551 | if ((len & (len - 1)) || (addr & ~len_mask) || |
552 | len == 0 || len > TARGET_PAGE_SIZE) { | |
75a34036 AF |
553 | error_report("tried to set invalid watchpoint at %" |
554 | VADDR_PRIx ", len=%" VADDR_PRIu, addr, len); | |
b4051334 AL |
555 | return -EINVAL; |
556 | } | |
7267c094 | 557 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
558 | |
559 | wp->vaddr = addr; | |
b4051334 | 560 | wp->len_mask = len_mask; |
a1d1bb31 AL |
561 | wp->flags = flags; |
562 | ||
2dc9f411 | 563 | /* keep all GDB-injected watchpoints in front */ |
ff4700b0 AF |
564 | if (flags & BP_GDB) { |
565 | QTAILQ_INSERT_HEAD(&cpu->watchpoints, wp, entry); | |
566 | } else { | |
567 | QTAILQ_INSERT_TAIL(&cpu->watchpoints, wp, entry); | |
568 | } | |
6658ffb8 | 569 | |
6658ffb8 | 570 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
571 | |
572 | if (watchpoint) | |
573 | *watchpoint = wp; | |
574 | return 0; | |
6658ffb8 PB |
575 | } |
576 | ||
a1d1bb31 | 577 | /* Remove a specific watchpoint. */ |
75a34036 | 578 | int cpu_watchpoint_remove(CPUState *cpu, vaddr addr, vaddr len, |
a1d1bb31 | 579 | int flags) |
6658ffb8 | 580 | { |
75a34036 | 581 | vaddr len_mask = ~(len - 1); |
a1d1bb31 | 582 | CPUWatchpoint *wp; |
6658ffb8 | 583 | |
ff4700b0 | 584 | QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { |
b4051334 | 585 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 586 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
75a34036 | 587 | cpu_watchpoint_remove_by_ref(cpu, wp); |
6658ffb8 PB |
588 | return 0; |
589 | } | |
590 | } | |
a1d1bb31 | 591 | return -ENOENT; |
6658ffb8 PB |
592 | } |
593 | ||
a1d1bb31 | 594 | /* Remove a specific watchpoint by reference. */ |
75a34036 | 595 | void cpu_watchpoint_remove_by_ref(CPUState *cpu, CPUWatchpoint *watchpoint) |
a1d1bb31 | 596 | { |
75a34036 | 597 | CPUArchState *env = cpu->env_ptr; |
ff4700b0 AF |
598 | |
599 | QTAILQ_REMOVE(&cpu->watchpoints, watchpoint, entry); | |
7d03f82f | 600 | |
a1d1bb31 AL |
601 | tlb_flush_page(env, watchpoint->vaddr); |
602 | ||
7267c094 | 603 | g_free(watchpoint); |
a1d1bb31 AL |
604 | } |
605 | ||
606 | /* Remove all matching watchpoints. */ | |
75a34036 | 607 | void cpu_watchpoint_remove_all(CPUState *cpu, int mask) |
a1d1bb31 | 608 | { |
c0ce998e | 609 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 610 | |
ff4700b0 | 611 | QTAILQ_FOREACH_SAFE(wp, &cpu->watchpoints, entry, next) { |
75a34036 AF |
612 | if (wp->flags & mask) { |
613 | cpu_watchpoint_remove_by_ref(cpu, wp); | |
614 | } | |
c0ce998e | 615 | } |
7d03f82f | 616 | } |
c527ee8f | 617 | #endif |
7d03f82f | 618 | |
a1d1bb31 | 619 | /* Add a breakpoint. */ |
b3310ab3 | 620 | int cpu_breakpoint_insert(CPUState *cpu, vaddr pc, int flags, |
a1d1bb31 | 621 | CPUBreakpoint **breakpoint) |
4c3a88a2 | 622 | { |
1fddef4b | 623 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 624 | CPUBreakpoint *bp; |
3b46e624 | 625 | |
7267c094 | 626 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 627 | |
a1d1bb31 AL |
628 | bp->pc = pc; |
629 | bp->flags = flags; | |
630 | ||
2dc9f411 | 631 | /* keep all GDB-injected breakpoints in front */ |
00b941e5 | 632 | if (flags & BP_GDB) { |
f0c3c505 | 633 | QTAILQ_INSERT_HEAD(&cpu->breakpoints, bp, entry); |
00b941e5 | 634 | } else { |
f0c3c505 | 635 | QTAILQ_INSERT_TAIL(&cpu->breakpoints, bp, entry); |
00b941e5 | 636 | } |
3b46e624 | 637 | |
f0c3c505 | 638 | breakpoint_invalidate(cpu, pc); |
a1d1bb31 | 639 | |
00b941e5 | 640 | if (breakpoint) { |
a1d1bb31 | 641 | *breakpoint = bp; |
00b941e5 | 642 | } |
4c3a88a2 FB |
643 | return 0; |
644 | #else | |
a1d1bb31 | 645 | return -ENOSYS; |
4c3a88a2 FB |
646 | #endif |
647 | } | |
648 | ||
a1d1bb31 | 649 | /* Remove a specific breakpoint. */ |
b3310ab3 | 650 | int cpu_breakpoint_remove(CPUState *cpu, vaddr pc, int flags) |
a1d1bb31 | 651 | { |
7d03f82f | 652 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
653 | CPUBreakpoint *bp; |
654 | ||
f0c3c505 | 655 | QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { |
a1d1bb31 | 656 | if (bp->pc == pc && bp->flags == flags) { |
b3310ab3 | 657 | cpu_breakpoint_remove_by_ref(cpu, bp); |
a1d1bb31 AL |
658 | return 0; |
659 | } | |
7d03f82f | 660 | } |
a1d1bb31 AL |
661 | return -ENOENT; |
662 | #else | |
663 | return -ENOSYS; | |
7d03f82f EI |
664 | #endif |
665 | } | |
666 | ||
a1d1bb31 | 667 | /* Remove a specific breakpoint by reference. */ |
b3310ab3 | 668 | void cpu_breakpoint_remove_by_ref(CPUState *cpu, CPUBreakpoint *breakpoint) |
4c3a88a2 | 669 | { |
1fddef4b | 670 | #if defined(TARGET_HAS_ICE) |
f0c3c505 AF |
671 | QTAILQ_REMOVE(&cpu->breakpoints, breakpoint, entry); |
672 | ||
673 | breakpoint_invalidate(cpu, breakpoint->pc); | |
a1d1bb31 | 674 | |
7267c094 | 675 | g_free(breakpoint); |
a1d1bb31 AL |
676 | #endif |
677 | } | |
678 | ||
679 | /* Remove all matching breakpoints. */ | |
b3310ab3 | 680 | void cpu_breakpoint_remove_all(CPUState *cpu, int mask) |
a1d1bb31 AL |
681 | { |
682 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 683 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 684 | |
f0c3c505 | 685 | QTAILQ_FOREACH_SAFE(bp, &cpu->breakpoints, entry, next) { |
b3310ab3 AF |
686 | if (bp->flags & mask) { |
687 | cpu_breakpoint_remove_by_ref(cpu, bp); | |
688 | } | |
c0ce998e | 689 | } |
4c3a88a2 FB |
690 | #endif |
691 | } | |
692 | ||
c33a346e FB |
693 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
694 | CPU loop after each instruction */ | |
3825b28f | 695 | void cpu_single_step(CPUState *cpu, int enabled) |
c33a346e | 696 | { |
1fddef4b | 697 | #if defined(TARGET_HAS_ICE) |
ed2803da AF |
698 | if (cpu->singlestep_enabled != enabled) { |
699 | cpu->singlestep_enabled = enabled; | |
700 | if (kvm_enabled()) { | |
38e478ec | 701 | kvm_update_guest_debug(cpu, 0); |
ed2803da | 702 | } else { |
ccbb4d44 | 703 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 | 704 | /* XXX: only flush what is necessary */ |
38e478ec | 705 | CPUArchState *env = cpu->env_ptr; |
e22a25c9 AL |
706 | tb_flush(env); |
707 | } | |
c33a346e FB |
708 | } |
709 | #endif | |
710 | } | |
711 | ||
9349b4f9 | 712 | void cpu_abort(CPUArchState *env, const char *fmt, ...) |
7501267e | 713 | { |
878096ee | 714 | CPUState *cpu = ENV_GET_CPU(env); |
7501267e | 715 | va_list ap; |
493ae1f0 | 716 | va_list ap2; |
7501267e FB |
717 | |
718 | va_start(ap, fmt); | |
493ae1f0 | 719 | va_copy(ap2, ap); |
7501267e FB |
720 | fprintf(stderr, "qemu: fatal: "); |
721 | vfprintf(stderr, fmt, ap); | |
722 | fprintf(stderr, "\n"); | |
878096ee | 723 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
93fcfe39 AL |
724 | if (qemu_log_enabled()) { |
725 | qemu_log("qemu: fatal: "); | |
726 | qemu_log_vprintf(fmt, ap2); | |
727 | qemu_log("\n"); | |
a0762859 | 728 | log_cpu_state(cpu, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
31b1a7b4 | 729 | qemu_log_flush(); |
93fcfe39 | 730 | qemu_log_close(); |
924edcae | 731 | } |
493ae1f0 | 732 | va_end(ap2); |
f9373291 | 733 | va_end(ap); |
fd052bf6 RV |
734 | #if defined(CONFIG_USER_ONLY) |
735 | { | |
736 | struct sigaction act; | |
737 | sigfillset(&act.sa_mask); | |
738 | act.sa_handler = SIG_DFL; | |
739 | sigaction(SIGABRT, &act, NULL); | |
740 | } | |
741 | #endif | |
7501267e FB |
742 | abort(); |
743 | } | |
744 | ||
0124311e | 745 | #if !defined(CONFIG_USER_ONLY) |
041603fe PB |
746 | static RAMBlock *qemu_get_ram_block(ram_addr_t addr) |
747 | { | |
748 | RAMBlock *block; | |
749 | ||
750 | /* The list is protected by the iothread lock here. */ | |
751 | block = ram_list.mru_block; | |
752 | if (block && addr - block->offset < block->length) { | |
753 | goto found; | |
754 | } | |
755 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
756 | if (addr - block->offset < block->length) { | |
757 | goto found; | |
758 | } | |
759 | } | |
760 | ||
761 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
762 | abort(); | |
763 | ||
764 | found: | |
765 | ram_list.mru_block = block; | |
766 | return block; | |
767 | } | |
768 | ||
a2f4d5be | 769 | static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t length) |
d24981d3 | 770 | { |
041603fe | 771 | ram_addr_t start1; |
a2f4d5be JQ |
772 | RAMBlock *block; |
773 | ram_addr_t end; | |
774 | ||
775 | end = TARGET_PAGE_ALIGN(start + length); | |
776 | start &= TARGET_PAGE_MASK; | |
d24981d3 | 777 | |
041603fe PB |
778 | block = qemu_get_ram_block(start); |
779 | assert(block == qemu_get_ram_block(end - 1)); | |
780 | start1 = (uintptr_t)block->host + (start - block->offset); | |
781 | cpu_tlb_reset_dirty_all(start1, length); | |
d24981d3 JQ |
782 | } |
783 | ||
5579c7f3 | 784 | /* Note: start and end must be within the same ram block. */ |
a2f4d5be | 785 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t length, |
52159192 | 786 | unsigned client) |
1ccde1cb | 787 | { |
1ccde1cb FB |
788 | if (length == 0) |
789 | return; | |
ace694cc | 790 | cpu_physical_memory_clear_dirty_range(start, length, client); |
f23db169 | 791 | |
d24981d3 | 792 | if (tcg_enabled()) { |
a2f4d5be | 793 | tlb_reset_dirty_range_all(start, length); |
5579c7f3 | 794 | } |
1ccde1cb FB |
795 | } |
796 | ||
981fdf23 | 797 | static void cpu_physical_memory_set_dirty_tracking(bool enable) |
74576198 AL |
798 | { |
799 | in_migration = enable; | |
74576198 AL |
800 | } |
801 | ||
a8170e5e | 802 | hwaddr memory_region_section_get_iotlb(CPUArchState *env, |
149f54b5 PB |
803 | MemoryRegionSection *section, |
804 | target_ulong vaddr, | |
805 | hwaddr paddr, hwaddr xlat, | |
806 | int prot, | |
807 | target_ulong *address) | |
e5548617 | 808 | { |
ff4700b0 | 809 | CPUState *cpu = ENV_GET_CPU(env); |
a8170e5e | 810 | hwaddr iotlb; |
e5548617 BS |
811 | CPUWatchpoint *wp; |
812 | ||
cc5bea60 | 813 | if (memory_region_is_ram(section->mr)) { |
e5548617 BS |
814 | /* Normal RAM. */ |
815 | iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) | |
149f54b5 | 816 | + xlat; |
e5548617 | 817 | if (!section->readonly) { |
b41aac4f | 818 | iotlb |= PHYS_SECTION_NOTDIRTY; |
e5548617 | 819 | } else { |
b41aac4f | 820 | iotlb |= PHYS_SECTION_ROM; |
e5548617 BS |
821 | } |
822 | } else { | |
1b3fb98f | 823 | iotlb = section - section->address_space->dispatch->map.sections; |
149f54b5 | 824 | iotlb += xlat; |
e5548617 BS |
825 | } |
826 | ||
827 | /* Make accesses to pages with watchpoints go via the | |
828 | watchpoint trap routines. */ | |
ff4700b0 | 829 | QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { |
e5548617 BS |
830 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { |
831 | /* Avoid trapping reads of pages with a write breakpoint. */ | |
832 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
b41aac4f | 833 | iotlb = PHYS_SECTION_WATCH + paddr; |
e5548617 BS |
834 | *address |= TLB_MMIO; |
835 | break; | |
836 | } | |
837 | } | |
838 | } | |
839 | ||
840 | return iotlb; | |
841 | } | |
9fa3e853 FB |
842 | #endif /* defined(CONFIG_USER_ONLY) */ |
843 | ||
e2eef170 | 844 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 845 | |
c227f099 | 846 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 847 | uint16_t section); |
acc9d80b | 848 | static subpage_t *subpage_init(AddressSpace *as, hwaddr base); |
54688b1e | 849 | |
575ddeb4 | 850 | static void *(*phys_mem_alloc)(size_t size) = qemu_anon_ram_alloc; |
91138037 MA |
851 | |
852 | /* | |
853 | * Set a custom physical guest memory alloator. | |
854 | * Accelerators with unusual needs may need this. Hopefully, we can | |
855 | * get rid of it eventually. | |
856 | */ | |
575ddeb4 | 857 | void phys_mem_set_alloc(void *(*alloc)(size_t)) |
91138037 MA |
858 | { |
859 | phys_mem_alloc = alloc; | |
860 | } | |
861 | ||
53cb28cb MA |
862 | static uint16_t phys_section_add(PhysPageMap *map, |
863 | MemoryRegionSection *section) | |
5312bd8b | 864 | { |
68f3f65b PB |
865 | /* The physical section number is ORed with a page-aligned |
866 | * pointer to produce the iotlb entries. Thus it should | |
867 | * never overflow into the page-aligned value. | |
868 | */ | |
53cb28cb | 869 | assert(map->sections_nb < TARGET_PAGE_SIZE); |
68f3f65b | 870 | |
53cb28cb MA |
871 | if (map->sections_nb == map->sections_nb_alloc) { |
872 | map->sections_nb_alloc = MAX(map->sections_nb_alloc * 2, 16); | |
873 | map->sections = g_renew(MemoryRegionSection, map->sections, | |
874 | map->sections_nb_alloc); | |
5312bd8b | 875 | } |
53cb28cb | 876 | map->sections[map->sections_nb] = *section; |
dfde4e6e | 877 | memory_region_ref(section->mr); |
53cb28cb | 878 | return map->sections_nb++; |
5312bd8b AK |
879 | } |
880 | ||
058bc4b5 PB |
881 | static void phys_section_destroy(MemoryRegion *mr) |
882 | { | |
dfde4e6e PB |
883 | memory_region_unref(mr); |
884 | ||
058bc4b5 PB |
885 | if (mr->subpage) { |
886 | subpage_t *subpage = container_of(mr, subpage_t, iomem); | |
887 | memory_region_destroy(&subpage->iomem); | |
888 | g_free(subpage); | |
889 | } | |
890 | } | |
891 | ||
6092666e | 892 | static void phys_sections_free(PhysPageMap *map) |
5312bd8b | 893 | { |
9affd6fc PB |
894 | while (map->sections_nb > 0) { |
895 | MemoryRegionSection *section = &map->sections[--map->sections_nb]; | |
058bc4b5 PB |
896 | phys_section_destroy(section->mr); |
897 | } | |
9affd6fc PB |
898 | g_free(map->sections); |
899 | g_free(map->nodes); | |
5312bd8b AK |
900 | } |
901 | ||
ac1970fb | 902 | static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
0f0cb164 AK |
903 | { |
904 | subpage_t *subpage; | |
a8170e5e | 905 | hwaddr base = section->offset_within_address_space |
0f0cb164 | 906 | & TARGET_PAGE_MASK; |
97115a8d | 907 | MemoryRegionSection *existing = phys_page_find(d->phys_map, base, |
53cb28cb | 908 | d->map.nodes, d->map.sections); |
0f0cb164 AK |
909 | MemoryRegionSection subsection = { |
910 | .offset_within_address_space = base, | |
052e87b0 | 911 | .size = int128_make64(TARGET_PAGE_SIZE), |
0f0cb164 | 912 | }; |
a8170e5e | 913 | hwaddr start, end; |
0f0cb164 | 914 | |
f3705d53 | 915 | assert(existing->mr->subpage || existing->mr == &io_mem_unassigned); |
0f0cb164 | 916 | |
f3705d53 | 917 | if (!(existing->mr->subpage)) { |
acc9d80b | 918 | subpage = subpage_init(d->as, base); |
3be91e86 | 919 | subsection.address_space = d->as; |
0f0cb164 | 920 | subsection.mr = &subpage->iomem; |
ac1970fb | 921 | phys_page_set(d, base >> TARGET_PAGE_BITS, 1, |
53cb28cb | 922 | phys_section_add(&d->map, &subsection)); |
0f0cb164 | 923 | } else { |
f3705d53 | 924 | subpage = container_of(existing->mr, subpage_t, iomem); |
0f0cb164 AK |
925 | } |
926 | start = section->offset_within_address_space & ~TARGET_PAGE_MASK; | |
052e87b0 | 927 | end = start + int128_get64(section->size) - 1; |
53cb28cb MA |
928 | subpage_register(subpage, start, end, |
929 | phys_section_add(&d->map, section)); | |
0f0cb164 AK |
930 | } |
931 | ||
932 | ||
052e87b0 PB |
933 | static void register_multipage(AddressSpaceDispatch *d, |
934 | MemoryRegionSection *section) | |
33417e70 | 935 | { |
a8170e5e | 936 | hwaddr start_addr = section->offset_within_address_space; |
53cb28cb | 937 | uint16_t section_index = phys_section_add(&d->map, section); |
052e87b0 PB |
938 | uint64_t num_pages = int128_get64(int128_rshift(section->size, |
939 | TARGET_PAGE_BITS)); | |
dd81124b | 940 | |
733d5ef5 PB |
941 | assert(num_pages); |
942 | phys_page_set(d, start_addr >> TARGET_PAGE_BITS, num_pages, section_index); | |
33417e70 FB |
943 | } |
944 | ||
ac1970fb | 945 | static void mem_add(MemoryListener *listener, MemoryRegionSection *section) |
0f0cb164 | 946 | { |
89ae337a | 947 | AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener); |
00752703 | 948 | AddressSpaceDispatch *d = as->next_dispatch; |
99b9cc06 | 949 | MemoryRegionSection now = *section, remain = *section; |
052e87b0 | 950 | Int128 page_size = int128_make64(TARGET_PAGE_SIZE); |
0f0cb164 | 951 | |
733d5ef5 PB |
952 | if (now.offset_within_address_space & ~TARGET_PAGE_MASK) { |
953 | uint64_t left = TARGET_PAGE_ALIGN(now.offset_within_address_space) | |
954 | - now.offset_within_address_space; | |
955 | ||
052e87b0 | 956 | now.size = int128_min(int128_make64(left), now.size); |
ac1970fb | 957 | register_subpage(d, &now); |
733d5ef5 | 958 | } else { |
052e87b0 | 959 | now.size = int128_zero(); |
733d5ef5 | 960 | } |
052e87b0 PB |
961 | while (int128_ne(remain.size, now.size)) { |
962 | remain.size = int128_sub(remain.size, now.size); | |
963 | remain.offset_within_address_space += int128_get64(now.size); | |
964 | remain.offset_within_region += int128_get64(now.size); | |
69b67646 | 965 | now = remain; |
052e87b0 | 966 | if (int128_lt(remain.size, page_size)) { |
733d5ef5 | 967 | register_subpage(d, &now); |
88266249 | 968 | } else if (remain.offset_within_address_space & ~TARGET_PAGE_MASK) { |
052e87b0 | 969 | now.size = page_size; |
ac1970fb | 970 | register_subpage(d, &now); |
69b67646 | 971 | } else { |
052e87b0 | 972 | now.size = int128_and(now.size, int128_neg(page_size)); |
ac1970fb | 973 | register_multipage(d, &now); |
69b67646 | 974 | } |
0f0cb164 AK |
975 | } |
976 | } | |
977 | ||
62a2744c SY |
978 | void qemu_flush_coalesced_mmio_buffer(void) |
979 | { | |
980 | if (kvm_enabled()) | |
981 | kvm_flush_coalesced_mmio_buffer(); | |
982 | } | |
983 | ||
b2a8658e UD |
984 | void qemu_mutex_lock_ramlist(void) |
985 | { | |
986 | qemu_mutex_lock(&ram_list.mutex); | |
987 | } | |
988 | ||
989 | void qemu_mutex_unlock_ramlist(void) | |
990 | { | |
991 | qemu_mutex_unlock(&ram_list.mutex); | |
992 | } | |
993 | ||
e1e84ba0 | 994 | #ifdef __linux__ |
c902760f MT |
995 | |
996 | #include <sys/vfs.h> | |
997 | ||
998 | #define HUGETLBFS_MAGIC 0x958458f6 | |
999 | ||
1000 | static long gethugepagesize(const char *path) | |
1001 | { | |
1002 | struct statfs fs; | |
1003 | int ret; | |
1004 | ||
1005 | do { | |
9742bf26 | 1006 | ret = statfs(path, &fs); |
c902760f MT |
1007 | } while (ret != 0 && errno == EINTR); |
1008 | ||
1009 | if (ret != 0) { | |
9742bf26 YT |
1010 | perror(path); |
1011 | return 0; | |
c902760f MT |
1012 | } |
1013 | ||
1014 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 1015 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
1016 | |
1017 | return fs.f_bsize; | |
1018 | } | |
1019 | ||
ef36fa14 MT |
1020 | static sigjmp_buf sigjump; |
1021 | ||
1022 | static void sigbus_handler(int signal) | |
1023 | { | |
1024 | siglongjmp(sigjump, 1); | |
1025 | } | |
1026 | ||
04b16653 AW |
1027 | static void *file_ram_alloc(RAMBlock *block, |
1028 | ram_addr_t memory, | |
1029 | const char *path) | |
c902760f MT |
1030 | { |
1031 | char *filename; | |
8ca761f6 PF |
1032 | char *sanitized_name; |
1033 | char *c; | |
c902760f MT |
1034 | void *area; |
1035 | int fd; | |
c902760f MT |
1036 | unsigned long hpagesize; |
1037 | ||
1038 | hpagesize = gethugepagesize(path); | |
1039 | if (!hpagesize) { | |
f9a49dfa | 1040 | goto error; |
c902760f MT |
1041 | } |
1042 | ||
1043 | if (memory < hpagesize) { | |
1044 | return NULL; | |
1045 | } | |
1046 | ||
1047 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
1048 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
f9a49dfa | 1049 | goto error; |
c902760f MT |
1050 | } |
1051 | ||
8ca761f6 PF |
1052 | /* Make name safe to use with mkstemp by replacing '/' with '_'. */ |
1053 | sanitized_name = g_strdup(block->mr->name); | |
1054 | for (c = sanitized_name; *c != '\0'; c++) { | |
1055 | if (*c == '/') | |
1056 | *c = '_'; | |
1057 | } | |
1058 | ||
1059 | filename = g_strdup_printf("%s/qemu_back_mem.%s.XXXXXX", path, | |
1060 | sanitized_name); | |
1061 | g_free(sanitized_name); | |
c902760f MT |
1062 | |
1063 | fd = mkstemp(filename); | |
1064 | if (fd < 0) { | |
9742bf26 | 1065 | perror("unable to create backing store for hugepages"); |
e4ada482 | 1066 | g_free(filename); |
f9a49dfa | 1067 | goto error; |
c902760f MT |
1068 | } |
1069 | unlink(filename); | |
e4ada482 | 1070 | g_free(filename); |
c902760f MT |
1071 | |
1072 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
1073 | ||
1074 | /* | |
1075 | * ftruncate is not supported by hugetlbfs in older | |
1076 | * hosts, so don't bother bailing out on errors. | |
1077 | * If anything goes wrong with it under other filesystems, | |
1078 | * mmap will fail. | |
1079 | */ | |
1080 | if (ftruncate(fd, memory)) | |
9742bf26 | 1081 | perror("ftruncate"); |
c902760f | 1082 | |
c902760f | 1083 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); |
c902760f | 1084 | if (area == MAP_FAILED) { |
9742bf26 YT |
1085 | perror("file_ram_alloc: can't mmap RAM pages"); |
1086 | close(fd); | |
f9a49dfa | 1087 | goto error; |
c902760f | 1088 | } |
ef36fa14 MT |
1089 | |
1090 | if (mem_prealloc) { | |
1091 | int ret, i; | |
1092 | struct sigaction act, oldact; | |
1093 | sigset_t set, oldset; | |
1094 | ||
1095 | memset(&act, 0, sizeof(act)); | |
1096 | act.sa_handler = &sigbus_handler; | |
1097 | act.sa_flags = 0; | |
1098 | ||
1099 | ret = sigaction(SIGBUS, &act, &oldact); | |
1100 | if (ret) { | |
1101 | perror("file_ram_alloc: failed to install signal handler"); | |
1102 | exit(1); | |
1103 | } | |
1104 | ||
1105 | /* unblock SIGBUS */ | |
1106 | sigemptyset(&set); | |
1107 | sigaddset(&set, SIGBUS); | |
1108 | pthread_sigmask(SIG_UNBLOCK, &set, &oldset); | |
1109 | ||
1110 | if (sigsetjmp(sigjump, 1)) { | |
1111 | fprintf(stderr, "file_ram_alloc: failed to preallocate pages\n"); | |
1112 | exit(1); | |
1113 | } | |
1114 | ||
1115 | /* MAP_POPULATE silently ignores failures */ | |
2ba82852 | 1116 | for (i = 0; i < (memory/hpagesize); i++) { |
ef36fa14 MT |
1117 | memset(area + (hpagesize*i), 0, 1); |
1118 | } | |
1119 | ||
1120 | ret = sigaction(SIGBUS, &oldact, NULL); | |
1121 | if (ret) { | |
1122 | perror("file_ram_alloc: failed to reinstall signal handler"); | |
1123 | exit(1); | |
1124 | } | |
1125 | ||
1126 | pthread_sigmask(SIG_SETMASK, &oldset, NULL); | |
1127 | } | |
1128 | ||
04b16653 | 1129 | block->fd = fd; |
c902760f | 1130 | return area; |
f9a49dfa MT |
1131 | |
1132 | error: | |
1133 | if (mem_prealloc) { | |
1134 | exit(1); | |
1135 | } | |
1136 | return NULL; | |
c902760f | 1137 | } |
e1e84ba0 MA |
1138 | #else |
1139 | static void *file_ram_alloc(RAMBlock *block, | |
1140 | ram_addr_t memory, | |
1141 | const char *path) | |
1142 | { | |
1143 | fprintf(stderr, "-mem-path not supported on this host\n"); | |
1144 | exit(1); | |
1145 | } | |
c902760f MT |
1146 | #endif |
1147 | ||
d17b5288 | 1148 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
1149 | { |
1150 | RAMBlock *block, *next_block; | |
3e837b2c | 1151 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 | 1152 | |
49cd9ac6 SH |
1153 | assert(size != 0); /* it would hand out same offset multiple times */ |
1154 | ||
a3161038 | 1155 | if (QTAILQ_EMPTY(&ram_list.blocks)) |
04b16653 AW |
1156 | return 0; |
1157 | ||
a3161038 | 1158 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f15fbc4b | 1159 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
1160 | |
1161 | end = block->offset + block->length; | |
1162 | ||
a3161038 | 1163 | QTAILQ_FOREACH(next_block, &ram_list.blocks, next) { |
04b16653 AW |
1164 | if (next_block->offset >= end) { |
1165 | next = MIN(next, next_block->offset); | |
1166 | } | |
1167 | } | |
1168 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 1169 | offset = end; |
04b16653 AW |
1170 | mingap = next - end; |
1171 | } | |
1172 | } | |
3e837b2c AW |
1173 | |
1174 | if (offset == RAM_ADDR_MAX) { | |
1175 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
1176 | (uint64_t)size); | |
1177 | abort(); | |
1178 | } | |
1179 | ||
04b16653 AW |
1180 | return offset; |
1181 | } | |
1182 | ||
652d7ec2 | 1183 | ram_addr_t last_ram_offset(void) |
d17b5288 AW |
1184 | { |
1185 | RAMBlock *block; | |
1186 | ram_addr_t last = 0; | |
1187 | ||
a3161038 | 1188 | QTAILQ_FOREACH(block, &ram_list.blocks, next) |
d17b5288 AW |
1189 | last = MAX(last, block->offset + block->length); |
1190 | ||
1191 | return last; | |
1192 | } | |
1193 | ||
ddb97f1d JB |
1194 | static void qemu_ram_setup_dump(void *addr, ram_addr_t size) |
1195 | { | |
1196 | int ret; | |
ddb97f1d JB |
1197 | |
1198 | /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */ | |
2ff3de68 MA |
1199 | if (!qemu_opt_get_bool(qemu_get_machine_opts(), |
1200 | "dump-guest-core", true)) { | |
ddb97f1d JB |
1201 | ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP); |
1202 | if (ret) { | |
1203 | perror("qemu_madvise"); | |
1204 | fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, " | |
1205 | "but dump_guest_core=off specified\n"); | |
1206 | } | |
1207 | } | |
1208 | } | |
1209 | ||
c5705a77 | 1210 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
1211 | { |
1212 | RAMBlock *new_block, *block; | |
1213 | ||
c5705a77 | 1214 | new_block = NULL; |
a3161038 | 1215 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 AK |
1216 | if (block->offset == addr) { |
1217 | new_block = block; | |
1218 | break; | |
1219 | } | |
1220 | } | |
1221 | assert(new_block); | |
1222 | assert(!new_block->idstr[0]); | |
84b89d78 | 1223 | |
09e5ab63 AL |
1224 | if (dev) { |
1225 | char *id = qdev_get_dev_path(dev); | |
84b89d78 CM |
1226 | if (id) { |
1227 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 1228 | g_free(id); |
84b89d78 CM |
1229 | } |
1230 | } | |
1231 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
1232 | ||
b2a8658e UD |
1233 | /* This assumes the iothread lock is taken here too. */ |
1234 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1235 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 | 1236 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
1237 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
1238 | new_block->idstr); | |
1239 | abort(); | |
1240 | } | |
1241 | } | |
b2a8658e | 1242 | qemu_mutex_unlock_ramlist(); |
c5705a77 AK |
1243 | } |
1244 | ||
8490fc78 LC |
1245 | static int memory_try_enable_merging(void *addr, size_t len) |
1246 | { | |
2ff3de68 | 1247 | if (!qemu_opt_get_bool(qemu_get_machine_opts(), "mem-merge", true)) { |
8490fc78 LC |
1248 | /* disabled by the user */ |
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); | |
1253 | } | |
1254 | ||
c5705a77 AK |
1255 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, |
1256 | MemoryRegion *mr) | |
1257 | { | |
abb26d63 | 1258 | RAMBlock *block, *new_block; |
2152f5ca JQ |
1259 | ram_addr_t old_ram_size, new_ram_size; |
1260 | ||
1261 | old_ram_size = last_ram_offset() >> TARGET_PAGE_BITS; | |
c5705a77 AK |
1262 | |
1263 | size = TARGET_PAGE_ALIGN(size); | |
1264 | new_block = g_malloc0(sizeof(*new_block)); | |
3435f395 | 1265 | new_block->fd = -1; |
84b89d78 | 1266 | |
b2a8658e UD |
1267 | /* This assumes the iothread lock is taken here too. */ |
1268 | qemu_mutex_lock_ramlist(); | |
7c637366 | 1269 | new_block->mr = mr; |
432d268c | 1270 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
1271 | if (host) { |
1272 | new_block->host = host; | |
cd19cfa2 | 1273 | new_block->flags |= RAM_PREALLOC_MASK; |
dfeaf2ab MA |
1274 | } else if (xen_enabled()) { |
1275 | if (mem_path) { | |
1276 | fprintf(stderr, "-mem-path not supported with Xen\n"); | |
1277 | exit(1); | |
1278 | } | |
1279 | xen_ram_alloc(new_block->offset, size, mr); | |
6977dfe6 YT |
1280 | } else { |
1281 | if (mem_path) { | |
e1e84ba0 MA |
1282 | if (phys_mem_alloc != qemu_anon_ram_alloc) { |
1283 | /* | |
1284 | * file_ram_alloc() needs to allocate just like | |
1285 | * phys_mem_alloc, but we haven't bothered to provide | |
1286 | * a hook there. | |
1287 | */ | |
1288 | fprintf(stderr, | |
1289 | "-mem-path not supported with this accelerator\n"); | |
1290 | exit(1); | |
1291 | } | |
6977dfe6 | 1292 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
0628c182 MA |
1293 | } |
1294 | if (!new_block->host) { | |
91138037 | 1295 | new_block->host = phys_mem_alloc(size); |
39228250 MA |
1296 | if (!new_block->host) { |
1297 | fprintf(stderr, "Cannot set up guest memory '%s': %s\n", | |
1298 | new_block->mr->name, strerror(errno)); | |
1299 | exit(1); | |
1300 | } | |
8490fc78 | 1301 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1302 | } |
c902760f | 1303 | } |
94a6b54f PB |
1304 | new_block->length = size; |
1305 | ||
abb26d63 PB |
1306 | /* Keep the list sorted from biggest to smallest block. */ |
1307 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
1308 | if (block->length < new_block->length) { | |
1309 | break; | |
1310 | } | |
1311 | } | |
1312 | if (block) { | |
1313 | QTAILQ_INSERT_BEFORE(block, new_block, next); | |
1314 | } else { | |
1315 | QTAILQ_INSERT_TAIL(&ram_list.blocks, new_block, next); | |
1316 | } | |
0d6d3c87 | 1317 | ram_list.mru_block = NULL; |
94a6b54f | 1318 | |
f798b07f | 1319 | ram_list.version++; |
b2a8658e | 1320 | qemu_mutex_unlock_ramlist(); |
f798b07f | 1321 | |
2152f5ca JQ |
1322 | new_ram_size = last_ram_offset() >> TARGET_PAGE_BITS; |
1323 | ||
1324 | if (new_ram_size > old_ram_size) { | |
1ab4c8ce JQ |
1325 | int i; |
1326 | for (i = 0; i < DIRTY_MEMORY_NUM; i++) { | |
1327 | ram_list.dirty_memory[i] = | |
1328 | bitmap_zero_extend(ram_list.dirty_memory[i], | |
1329 | old_ram_size, new_ram_size); | |
1330 | } | |
2152f5ca | 1331 | } |
75218e7f | 1332 | cpu_physical_memory_set_dirty_range(new_block->offset, size); |
94a6b54f | 1333 | |
ddb97f1d | 1334 | qemu_ram_setup_dump(new_block->host, size); |
ad0b5321 | 1335 | qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); |
3e469dbf | 1336 | qemu_madvise(new_block->host, size, QEMU_MADV_DONTFORK); |
ddb97f1d | 1337 | |
6f0437e8 JK |
1338 | if (kvm_enabled()) |
1339 | kvm_setup_guest_memory(new_block->host, size); | |
1340 | ||
94a6b54f PB |
1341 | return new_block->offset; |
1342 | } | |
e9a1ab19 | 1343 | |
c5705a77 | 1344 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 1345 | { |
c5705a77 | 1346 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
1347 | } |
1348 | ||
1f2e98b6 AW |
1349 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
1350 | { | |
1351 | RAMBlock *block; | |
1352 | ||
b2a8658e UD |
1353 | /* This assumes the iothread lock is taken here too. */ |
1354 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1355 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
1f2e98b6 | 1356 | if (addr == block->offset) { |
a3161038 | 1357 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1358 | ram_list.mru_block = NULL; |
f798b07f | 1359 | ram_list.version++; |
7267c094 | 1360 | g_free(block); |
b2a8658e | 1361 | break; |
1f2e98b6 AW |
1362 | } |
1363 | } | |
b2a8658e | 1364 | qemu_mutex_unlock_ramlist(); |
1f2e98b6 AW |
1365 | } |
1366 | ||
c227f099 | 1367 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 1368 | { |
04b16653 AW |
1369 | RAMBlock *block; |
1370 | ||
b2a8658e UD |
1371 | /* This assumes the iothread lock is taken here too. */ |
1372 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1373 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
04b16653 | 1374 | if (addr == block->offset) { |
a3161038 | 1375 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1376 | ram_list.mru_block = NULL; |
f798b07f | 1377 | ram_list.version++; |
cd19cfa2 HY |
1378 | if (block->flags & RAM_PREALLOC_MASK) { |
1379 | ; | |
dfeaf2ab MA |
1380 | } else if (xen_enabled()) { |
1381 | xen_invalidate_map_cache_entry(block->host); | |
089f3f76 | 1382 | #ifndef _WIN32 |
3435f395 MA |
1383 | } else if (block->fd >= 0) { |
1384 | munmap(block->host, block->length); | |
1385 | close(block->fd); | |
089f3f76 | 1386 | #endif |
04b16653 | 1387 | } else { |
dfeaf2ab | 1388 | qemu_anon_ram_free(block->host, block->length); |
04b16653 | 1389 | } |
7267c094 | 1390 | g_free(block); |
b2a8658e | 1391 | break; |
04b16653 AW |
1392 | } |
1393 | } | |
b2a8658e | 1394 | qemu_mutex_unlock_ramlist(); |
04b16653 | 1395 | |
e9a1ab19 FB |
1396 | } |
1397 | ||
cd19cfa2 HY |
1398 | #ifndef _WIN32 |
1399 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
1400 | { | |
1401 | RAMBlock *block; | |
1402 | ram_addr_t offset; | |
1403 | int flags; | |
1404 | void *area, *vaddr; | |
1405 | ||
a3161038 | 1406 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
cd19cfa2 HY |
1407 | offset = addr - block->offset; |
1408 | if (offset < block->length) { | |
1409 | vaddr = block->host + offset; | |
1410 | if (block->flags & RAM_PREALLOC_MASK) { | |
1411 | ; | |
dfeaf2ab MA |
1412 | } else if (xen_enabled()) { |
1413 | abort(); | |
cd19cfa2 HY |
1414 | } else { |
1415 | flags = MAP_FIXED; | |
1416 | munmap(vaddr, length); | |
3435f395 | 1417 | if (block->fd >= 0) { |
cd19cfa2 | 1418 | #ifdef MAP_POPULATE |
3435f395 MA |
1419 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : |
1420 | MAP_PRIVATE; | |
fd28aa13 | 1421 | #else |
3435f395 | 1422 | flags |= MAP_PRIVATE; |
cd19cfa2 | 1423 | #endif |
3435f395 MA |
1424 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, |
1425 | flags, block->fd, offset); | |
cd19cfa2 | 1426 | } else { |
2eb9fbaa MA |
1427 | /* |
1428 | * Remap needs to match alloc. Accelerators that | |
1429 | * set phys_mem_alloc never remap. If they did, | |
1430 | * we'd need a remap hook here. | |
1431 | */ | |
1432 | assert(phys_mem_alloc == qemu_anon_ram_alloc); | |
1433 | ||
cd19cfa2 HY |
1434 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; |
1435 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1436 | flags, -1, 0); | |
cd19cfa2 HY |
1437 | } |
1438 | if (area != vaddr) { | |
f15fbc4b AP |
1439 | fprintf(stderr, "Could not remap addr: " |
1440 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
1441 | length, addr); |
1442 | exit(1); | |
1443 | } | |
8490fc78 | 1444 | memory_try_enable_merging(vaddr, length); |
ddb97f1d | 1445 | qemu_ram_setup_dump(vaddr, length); |
cd19cfa2 HY |
1446 | } |
1447 | return; | |
1448 | } | |
1449 | } | |
1450 | } | |
1451 | #endif /* !_WIN32 */ | |
1452 | ||
1b5ec234 PB |
1453 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
1454 | With the exception of the softmmu code in this file, this should | |
1455 | only be used for local memory (e.g. video ram) that the device owns, | |
1456 | and knows it isn't going to access beyond the end of the block. | |
1457 | ||
1458 | It should not be used for general purpose DMA. | |
1459 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
1460 | */ | |
1461 | void *qemu_get_ram_ptr(ram_addr_t addr) | |
1462 | { | |
1463 | RAMBlock *block = qemu_get_ram_block(addr); | |
1464 | ||
0d6d3c87 PB |
1465 | if (xen_enabled()) { |
1466 | /* We need to check if the requested address is in the RAM | |
1467 | * because we don't want to map the entire memory in QEMU. | |
1468 | * In that case just map until the end of the page. | |
1469 | */ | |
1470 | if (block->offset == 0) { | |
1471 | return xen_map_cache(addr, 0, 0); | |
1472 | } else if (block->host == NULL) { | |
1473 | block->host = | |
1474 | xen_map_cache(block->offset, block->length, 1); | |
1475 | } | |
1476 | } | |
1477 | return block->host + (addr - block->offset); | |
dc828ca1 PB |
1478 | } |
1479 | ||
38bee5dc SS |
1480 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
1481 | * but takes a size argument */ | |
cb85f7ab | 1482 | static void *qemu_ram_ptr_length(ram_addr_t addr, hwaddr *size) |
38bee5dc | 1483 | { |
8ab934f9 SS |
1484 | if (*size == 0) { |
1485 | return NULL; | |
1486 | } | |
868bb33f | 1487 | if (xen_enabled()) { |
e41d7c69 | 1488 | return xen_map_cache(addr, *size, 1); |
868bb33f | 1489 | } else { |
38bee5dc SS |
1490 | RAMBlock *block; |
1491 | ||
a3161038 | 1492 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
38bee5dc SS |
1493 | if (addr - block->offset < block->length) { |
1494 | if (addr - block->offset + *size > block->length) | |
1495 | *size = block->length - addr + block->offset; | |
1496 | return block->host + (addr - block->offset); | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1501 | abort(); | |
38bee5dc SS |
1502 | } |
1503 | } | |
1504 | ||
7443b437 PB |
1505 | /* Some of the softmmu routines need to translate from a host pointer |
1506 | (typically a TLB entry) back to a ram offset. */ | |
1b5ec234 | 1507 | MemoryRegion *qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 1508 | { |
94a6b54f PB |
1509 | RAMBlock *block; |
1510 | uint8_t *host = ptr; | |
1511 | ||
868bb33f | 1512 | if (xen_enabled()) { |
e41d7c69 | 1513 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
1b5ec234 | 1514 | return qemu_get_ram_block(*ram_addr)->mr; |
712c2b41 SS |
1515 | } |
1516 | ||
23887b79 PB |
1517 | block = ram_list.mru_block; |
1518 | if (block && block->host && host - block->host < block->length) { | |
1519 | goto found; | |
1520 | } | |
1521 | ||
a3161038 | 1522 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
1523 | /* This case append when the block is not mapped. */ |
1524 | if (block->host == NULL) { | |
1525 | continue; | |
1526 | } | |
f471a17e | 1527 | if (host - block->host < block->length) { |
23887b79 | 1528 | goto found; |
f471a17e | 1529 | } |
94a6b54f | 1530 | } |
432d268c | 1531 | |
1b5ec234 | 1532 | return NULL; |
23887b79 PB |
1533 | |
1534 | found: | |
1535 | *ram_addr = block->offset + (host - block->host); | |
1b5ec234 | 1536 | return block->mr; |
e890261f | 1537 | } |
f471a17e | 1538 | |
a8170e5e | 1539 | static void notdirty_mem_write(void *opaque, hwaddr ram_addr, |
0e0df1e2 | 1540 | uint64_t val, unsigned size) |
9fa3e853 | 1541 | { |
52159192 | 1542 | if (!cpu_physical_memory_get_dirty_flag(ram_addr, DIRTY_MEMORY_CODE)) { |
0e0df1e2 | 1543 | tb_invalidate_phys_page_fast(ram_addr, size); |
3a7d929e | 1544 | } |
0e0df1e2 AK |
1545 | switch (size) { |
1546 | case 1: | |
1547 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
1548 | break; | |
1549 | case 2: | |
1550 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
1551 | break; | |
1552 | case 4: | |
1553 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
1554 | break; | |
1555 | default: | |
1556 | abort(); | |
3a7d929e | 1557 | } |
52159192 JQ |
1558 | cpu_physical_memory_set_dirty_flag(ram_addr, DIRTY_MEMORY_MIGRATION); |
1559 | cpu_physical_memory_set_dirty_flag(ram_addr, DIRTY_MEMORY_VGA); | |
f23db169 FB |
1560 | /* we remove the notdirty callback only if the code has been |
1561 | flushed */ | |
a2cd8c85 | 1562 | if (!cpu_physical_memory_is_clean(ram_addr)) { |
4917cf44 | 1563 | CPUArchState *env = current_cpu->env_ptr; |
93afeade | 1564 | tlb_set_dirty(env, current_cpu->mem_io_vaddr); |
4917cf44 | 1565 | } |
9fa3e853 FB |
1566 | } |
1567 | ||
b018ddf6 PB |
1568 | static bool notdirty_mem_accepts(void *opaque, hwaddr addr, |
1569 | unsigned size, bool is_write) | |
1570 | { | |
1571 | return is_write; | |
1572 | } | |
1573 | ||
0e0df1e2 | 1574 | static const MemoryRegionOps notdirty_mem_ops = { |
0e0df1e2 | 1575 | .write = notdirty_mem_write, |
b018ddf6 | 1576 | .valid.accepts = notdirty_mem_accepts, |
0e0df1e2 | 1577 | .endianness = DEVICE_NATIVE_ENDIAN, |
1ccde1cb FB |
1578 | }; |
1579 | ||
0f459d16 | 1580 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 1581 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 | 1582 | { |
93afeade AF |
1583 | CPUState *cpu = current_cpu; |
1584 | CPUArchState *env = cpu->env_ptr; | |
06d55cc1 | 1585 | target_ulong pc, cs_base; |
0f459d16 | 1586 | target_ulong vaddr; |
a1d1bb31 | 1587 | CPUWatchpoint *wp; |
06d55cc1 | 1588 | int cpu_flags; |
0f459d16 | 1589 | |
ff4700b0 | 1590 | if (cpu->watchpoint_hit) { |
06d55cc1 AL |
1591 | /* We re-entered the check after replacing the TB. Now raise |
1592 | * the debug interrupt so that is will trigger after the | |
1593 | * current instruction. */ | |
93afeade | 1594 | cpu_interrupt(cpu, CPU_INTERRUPT_DEBUG); |
06d55cc1 AL |
1595 | return; |
1596 | } | |
93afeade | 1597 | vaddr = (cpu->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
ff4700b0 | 1598 | QTAILQ_FOREACH(wp, &cpu->watchpoints, entry) { |
b4051334 AL |
1599 | if ((vaddr == (wp->vaddr & len_mask) || |
1600 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 | 1601 | wp->flags |= BP_WATCHPOINT_HIT; |
ff4700b0 AF |
1602 | if (!cpu->watchpoint_hit) { |
1603 | cpu->watchpoint_hit = wp; | |
239c51a5 | 1604 | tb_check_watchpoint(cpu); |
6e140f28 | 1605 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { |
27103424 | 1606 | cpu->exception_index = EXCP_DEBUG; |
5638d180 | 1607 | cpu_loop_exit(cpu); |
6e140f28 AL |
1608 | } else { |
1609 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
648f034c | 1610 | tb_gen_code(cpu, pc, cs_base, cpu_flags, 1); |
0ea8cb88 | 1611 | cpu_resume_from_signal(cpu, NULL); |
6e140f28 | 1612 | } |
06d55cc1 | 1613 | } |
6e140f28 AL |
1614 | } else { |
1615 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
1616 | } |
1617 | } | |
1618 | } | |
1619 | ||
6658ffb8 PB |
1620 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
1621 | so these check for a hit then pass through to the normal out-of-line | |
1622 | phys routines. */ | |
a8170e5e | 1623 | static uint64_t watch_mem_read(void *opaque, hwaddr addr, |
1ec9b909 | 1624 | unsigned size) |
6658ffb8 | 1625 | { |
1ec9b909 AK |
1626 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); |
1627 | switch (size) { | |
2c17449b | 1628 | case 1: return ldub_phys(&address_space_memory, addr); |
41701aa4 | 1629 | case 2: return lduw_phys(&address_space_memory, addr); |
fdfba1a2 | 1630 | case 4: return ldl_phys(&address_space_memory, addr); |
1ec9b909 AK |
1631 | default: abort(); |
1632 | } | |
6658ffb8 PB |
1633 | } |
1634 | ||
a8170e5e | 1635 | static void watch_mem_write(void *opaque, hwaddr addr, |
1ec9b909 | 1636 | uint64_t val, unsigned size) |
6658ffb8 | 1637 | { |
1ec9b909 AK |
1638 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); |
1639 | switch (size) { | |
67364150 | 1640 | case 1: |
db3be60d | 1641 | stb_phys(&address_space_memory, addr, val); |
67364150 MF |
1642 | break; |
1643 | case 2: | |
5ce5944d | 1644 | stw_phys(&address_space_memory, addr, val); |
67364150 MF |
1645 | break; |
1646 | case 4: | |
ab1da857 | 1647 | stl_phys(&address_space_memory, addr, val); |
67364150 | 1648 | break; |
1ec9b909 AK |
1649 | default: abort(); |
1650 | } | |
6658ffb8 PB |
1651 | } |
1652 | ||
1ec9b909 AK |
1653 | static const MemoryRegionOps watch_mem_ops = { |
1654 | .read = watch_mem_read, | |
1655 | .write = watch_mem_write, | |
1656 | .endianness = DEVICE_NATIVE_ENDIAN, | |
6658ffb8 | 1657 | }; |
6658ffb8 | 1658 | |
a8170e5e | 1659 | static uint64_t subpage_read(void *opaque, hwaddr addr, |
70c68e44 | 1660 | unsigned len) |
db7b5426 | 1661 | { |
acc9d80b JK |
1662 | subpage_t *subpage = opaque; |
1663 | uint8_t buf[4]; | |
791af8c8 | 1664 | |
db7b5426 | 1665 | #if defined(DEBUG_SUBPAGE) |
016e9d62 | 1666 | printf("%s: subpage %p len %u addr " TARGET_FMT_plx "\n", __func__, |
acc9d80b | 1667 | subpage, len, addr); |
db7b5426 | 1668 | #endif |
acc9d80b JK |
1669 | address_space_read(subpage->as, addr + subpage->base, buf, len); |
1670 | switch (len) { | |
1671 | case 1: | |
1672 | return ldub_p(buf); | |
1673 | case 2: | |
1674 | return lduw_p(buf); | |
1675 | case 4: | |
1676 | return ldl_p(buf); | |
1677 | default: | |
1678 | abort(); | |
1679 | } | |
db7b5426 BS |
1680 | } |
1681 | ||
a8170e5e | 1682 | static void subpage_write(void *opaque, hwaddr addr, |
70c68e44 | 1683 | uint64_t value, unsigned len) |
db7b5426 | 1684 | { |
acc9d80b JK |
1685 | subpage_t *subpage = opaque; |
1686 | uint8_t buf[4]; | |
1687 | ||
db7b5426 | 1688 | #if defined(DEBUG_SUBPAGE) |
016e9d62 | 1689 | printf("%s: subpage %p len %u addr " TARGET_FMT_plx |
acc9d80b JK |
1690 | " value %"PRIx64"\n", |
1691 | __func__, subpage, len, addr, value); | |
db7b5426 | 1692 | #endif |
acc9d80b JK |
1693 | switch (len) { |
1694 | case 1: | |
1695 | stb_p(buf, value); | |
1696 | break; | |
1697 | case 2: | |
1698 | stw_p(buf, value); | |
1699 | break; | |
1700 | case 4: | |
1701 | stl_p(buf, value); | |
1702 | break; | |
1703 | default: | |
1704 | abort(); | |
1705 | } | |
1706 | address_space_write(subpage->as, addr + subpage->base, buf, len); | |
db7b5426 BS |
1707 | } |
1708 | ||
c353e4cc | 1709 | static bool subpage_accepts(void *opaque, hwaddr addr, |
016e9d62 | 1710 | unsigned len, bool is_write) |
c353e4cc | 1711 | { |
acc9d80b | 1712 | subpage_t *subpage = opaque; |
c353e4cc | 1713 | #if defined(DEBUG_SUBPAGE) |
016e9d62 | 1714 | printf("%s: subpage %p %c len %u addr " TARGET_FMT_plx "\n", |
acc9d80b | 1715 | __func__, subpage, is_write ? 'w' : 'r', len, addr); |
c353e4cc PB |
1716 | #endif |
1717 | ||
acc9d80b | 1718 | return address_space_access_valid(subpage->as, addr + subpage->base, |
016e9d62 | 1719 | len, is_write); |
c353e4cc PB |
1720 | } |
1721 | ||
70c68e44 AK |
1722 | static const MemoryRegionOps subpage_ops = { |
1723 | .read = subpage_read, | |
1724 | .write = subpage_write, | |
c353e4cc | 1725 | .valid.accepts = subpage_accepts, |
70c68e44 | 1726 | .endianness = DEVICE_NATIVE_ENDIAN, |
db7b5426 BS |
1727 | }; |
1728 | ||
c227f099 | 1729 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 1730 | uint16_t section) |
db7b5426 BS |
1731 | { |
1732 | int idx, eidx; | |
1733 | ||
1734 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
1735 | return -1; | |
1736 | idx = SUBPAGE_IDX(start); | |
1737 | eidx = SUBPAGE_IDX(end); | |
1738 | #if defined(DEBUG_SUBPAGE) | |
016e9d62 AK |
1739 | printf("%s: %p start %08x end %08x idx %08x eidx %08x section %d\n", |
1740 | __func__, mmio, start, end, idx, eidx, section); | |
db7b5426 | 1741 | #endif |
db7b5426 | 1742 | for (; idx <= eidx; idx++) { |
5312bd8b | 1743 | mmio->sub_section[idx] = section; |
db7b5426 BS |
1744 | } |
1745 | ||
1746 | return 0; | |
1747 | } | |
1748 | ||
acc9d80b | 1749 | static subpage_t *subpage_init(AddressSpace *as, hwaddr base) |
db7b5426 | 1750 | { |
c227f099 | 1751 | subpage_t *mmio; |
db7b5426 | 1752 | |
7267c094 | 1753 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b | 1754 | |
acc9d80b | 1755 | mmio->as = as; |
1eec614b | 1756 | mmio->base = base; |
2c9b15ca | 1757 | memory_region_init_io(&mmio->iomem, NULL, &subpage_ops, mmio, |
70c68e44 | 1758 | "subpage", TARGET_PAGE_SIZE); |
b3b00c78 | 1759 | mmio->iomem.subpage = true; |
db7b5426 | 1760 | #if defined(DEBUG_SUBPAGE) |
016e9d62 AK |
1761 | printf("%s: %p base " TARGET_FMT_plx " len %08x\n", __func__, |
1762 | mmio, base, TARGET_PAGE_SIZE); | |
db7b5426 | 1763 | #endif |
b41aac4f | 1764 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, PHYS_SECTION_UNASSIGNED); |
db7b5426 BS |
1765 | |
1766 | return mmio; | |
1767 | } | |
1768 | ||
53cb28cb | 1769 | static uint16_t dummy_section(PhysPageMap *map, MemoryRegion *mr) |
5312bd8b AK |
1770 | { |
1771 | MemoryRegionSection section = { | |
3be91e86 | 1772 | .address_space = &address_space_memory, |
5312bd8b AK |
1773 | .mr = mr, |
1774 | .offset_within_address_space = 0, | |
1775 | .offset_within_region = 0, | |
052e87b0 | 1776 | .size = int128_2_64(), |
5312bd8b AK |
1777 | }; |
1778 | ||
53cb28cb | 1779 | return phys_section_add(map, §ion); |
5312bd8b AK |
1780 | } |
1781 | ||
77717094 | 1782 | MemoryRegion *iotlb_to_region(AddressSpace *as, hwaddr index) |
aa102231 | 1783 | { |
77717094 | 1784 | return as->dispatch->map.sections[index & ~TARGET_PAGE_MASK].mr; |
aa102231 AK |
1785 | } |
1786 | ||
e9179ce1 AK |
1787 | static void io_mem_init(void) |
1788 | { | |
2c9b15ca PB |
1789 | memory_region_init_io(&io_mem_rom, NULL, &unassigned_mem_ops, NULL, "rom", UINT64_MAX); |
1790 | memory_region_init_io(&io_mem_unassigned, NULL, &unassigned_mem_ops, NULL, | |
0e0df1e2 | 1791 | "unassigned", UINT64_MAX); |
2c9b15ca | 1792 | memory_region_init_io(&io_mem_notdirty, NULL, ¬dirty_mem_ops, NULL, |
0e0df1e2 | 1793 | "notdirty", UINT64_MAX); |
2c9b15ca | 1794 | memory_region_init_io(&io_mem_watch, NULL, &watch_mem_ops, NULL, |
1ec9b909 | 1795 | "watch", UINT64_MAX); |
e9179ce1 AK |
1796 | } |
1797 | ||
ac1970fb | 1798 | static void mem_begin(MemoryListener *listener) |
00752703 PB |
1799 | { |
1800 | AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener); | |
53cb28cb MA |
1801 | AddressSpaceDispatch *d = g_new0(AddressSpaceDispatch, 1); |
1802 | uint16_t n; | |
1803 | ||
1804 | n = dummy_section(&d->map, &io_mem_unassigned); | |
1805 | assert(n == PHYS_SECTION_UNASSIGNED); | |
1806 | n = dummy_section(&d->map, &io_mem_notdirty); | |
1807 | assert(n == PHYS_SECTION_NOTDIRTY); | |
1808 | n = dummy_section(&d->map, &io_mem_rom); | |
1809 | assert(n == PHYS_SECTION_ROM); | |
1810 | n = dummy_section(&d->map, &io_mem_watch); | |
1811 | assert(n == PHYS_SECTION_WATCH); | |
00752703 | 1812 | |
9736e55b | 1813 | d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .skip = 1 }; |
00752703 PB |
1814 | d->as = as; |
1815 | as->next_dispatch = d; | |
1816 | } | |
1817 | ||
1818 | static void mem_commit(MemoryListener *listener) | |
ac1970fb | 1819 | { |
89ae337a | 1820 | AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener); |
0475d94f PB |
1821 | AddressSpaceDispatch *cur = as->dispatch; |
1822 | AddressSpaceDispatch *next = as->next_dispatch; | |
1823 | ||
53cb28cb | 1824 | phys_page_compact_all(next, next->map.nodes_nb); |
b35ba30f | 1825 | |
0475d94f | 1826 | as->dispatch = next; |
b41aac4f | 1827 | |
53cb28cb MA |
1828 | if (cur) { |
1829 | phys_sections_free(&cur->map); | |
1830 | g_free(cur); | |
1831 | } | |
9affd6fc PB |
1832 | } |
1833 | ||
1d71148e | 1834 | static void tcg_commit(MemoryListener *listener) |
50c1e149 | 1835 | { |
182735ef | 1836 | CPUState *cpu; |
117712c3 AK |
1837 | |
1838 | /* since each CPU stores ram addresses in its TLB cache, we must | |
1839 | reset the modified entries */ | |
1840 | /* XXX: slow ! */ | |
bdc44640 | 1841 | CPU_FOREACH(cpu) { |
182735ef AF |
1842 | CPUArchState *env = cpu->env_ptr; |
1843 | ||
33bde2e1 EI |
1844 | /* FIXME: Disentangle the cpu.h circular files deps so we can |
1845 | directly get the right CPU from listener. */ | |
1846 | if (cpu->tcg_as_listener != listener) { | |
1847 | continue; | |
1848 | } | |
117712c3 AK |
1849 | tlb_flush(env, 1); |
1850 | } | |
50c1e149 AK |
1851 | } |
1852 | ||
93632747 AK |
1853 | static void core_log_global_start(MemoryListener *listener) |
1854 | { | |
981fdf23 | 1855 | cpu_physical_memory_set_dirty_tracking(true); |
93632747 AK |
1856 | } |
1857 | ||
1858 | static void core_log_global_stop(MemoryListener *listener) | |
1859 | { | |
981fdf23 | 1860 | cpu_physical_memory_set_dirty_tracking(false); |
93632747 AK |
1861 | } |
1862 | ||
93632747 | 1863 | static MemoryListener core_memory_listener = { |
93632747 AK |
1864 | .log_global_start = core_log_global_start, |
1865 | .log_global_stop = core_log_global_stop, | |
ac1970fb | 1866 | .priority = 1, |
93632747 AK |
1867 | }; |
1868 | ||
ac1970fb AK |
1869 | void address_space_init_dispatch(AddressSpace *as) |
1870 | { | |
00752703 | 1871 | as->dispatch = NULL; |
89ae337a | 1872 | as->dispatch_listener = (MemoryListener) { |
ac1970fb | 1873 | .begin = mem_begin, |
00752703 | 1874 | .commit = mem_commit, |
ac1970fb AK |
1875 | .region_add = mem_add, |
1876 | .region_nop = mem_add, | |
1877 | .priority = 0, | |
1878 | }; | |
89ae337a | 1879 | memory_listener_register(&as->dispatch_listener, as); |
ac1970fb AK |
1880 | } |
1881 | ||
83f3c251 AK |
1882 | void address_space_destroy_dispatch(AddressSpace *as) |
1883 | { | |
1884 | AddressSpaceDispatch *d = as->dispatch; | |
1885 | ||
89ae337a | 1886 | memory_listener_unregister(&as->dispatch_listener); |
83f3c251 AK |
1887 | g_free(d); |
1888 | as->dispatch = NULL; | |
1889 | } | |
1890 | ||
62152b8a AK |
1891 | static void memory_map_init(void) |
1892 | { | |
7267c094 | 1893 | system_memory = g_malloc(sizeof(*system_memory)); |
03f49957 | 1894 | |
57271d63 | 1895 | memory_region_init(system_memory, NULL, "system", UINT64_MAX); |
7dca8043 | 1896 | address_space_init(&address_space_memory, system_memory, "memory"); |
309cb471 | 1897 | |
7267c094 | 1898 | system_io = g_malloc(sizeof(*system_io)); |
3bb28b72 JK |
1899 | memory_region_init_io(system_io, NULL, &unassigned_io_ops, NULL, "io", |
1900 | 65536); | |
7dca8043 | 1901 | address_space_init(&address_space_io, system_io, "I/O"); |
93632747 | 1902 | |
f6790af6 | 1903 | memory_listener_register(&core_memory_listener, &address_space_memory); |
62152b8a AK |
1904 | } |
1905 | ||
1906 | MemoryRegion *get_system_memory(void) | |
1907 | { | |
1908 | return system_memory; | |
1909 | } | |
1910 | ||
309cb471 AK |
1911 | MemoryRegion *get_system_io(void) |
1912 | { | |
1913 | return system_io; | |
1914 | } | |
1915 | ||
e2eef170 PB |
1916 | #endif /* !defined(CONFIG_USER_ONLY) */ |
1917 | ||
13eb76e0 FB |
1918 | /* physical memory access (slow version, mainly for debug) */ |
1919 | #if defined(CONFIG_USER_ONLY) | |
f17ec444 | 1920 | int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, |
a68fe89c | 1921 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
1922 | { |
1923 | int l, flags; | |
1924 | target_ulong page; | |
53a5960a | 1925 | void * p; |
13eb76e0 FB |
1926 | |
1927 | while (len > 0) { | |
1928 | page = addr & TARGET_PAGE_MASK; | |
1929 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1930 | if (l > len) | |
1931 | l = len; | |
1932 | flags = page_get_flags(page); | |
1933 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 1934 | return -1; |
13eb76e0 FB |
1935 | if (is_write) { |
1936 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 1937 | return -1; |
579a97f7 | 1938 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1939 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 1940 | return -1; |
72fb7daa AJ |
1941 | memcpy(p, buf, l); |
1942 | unlock_user(p, addr, l); | |
13eb76e0 FB |
1943 | } else { |
1944 | if (!(flags & PAGE_READ)) | |
a68fe89c | 1945 | return -1; |
579a97f7 | 1946 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1947 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 1948 | return -1; |
72fb7daa | 1949 | memcpy(buf, p, l); |
5b257578 | 1950 | unlock_user(p, addr, 0); |
13eb76e0 FB |
1951 | } |
1952 | len -= l; | |
1953 | buf += l; | |
1954 | addr += l; | |
1955 | } | |
a68fe89c | 1956 | return 0; |
13eb76e0 | 1957 | } |
8df1cd07 | 1958 | |
13eb76e0 | 1959 | #else |
51d7a9eb | 1960 | |
a8170e5e AK |
1961 | static void invalidate_and_set_dirty(hwaddr addr, |
1962 | hwaddr length) | |
51d7a9eb | 1963 | { |
a2cd8c85 | 1964 | if (cpu_physical_memory_is_clean(addr)) { |
51d7a9eb AP |
1965 | /* invalidate code */ |
1966 | tb_invalidate_phys_page_range(addr, addr + length, 0); | |
1967 | /* set dirty bit */ | |
52159192 JQ |
1968 | cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_VGA); |
1969 | cpu_physical_memory_set_dirty_flag(addr, DIRTY_MEMORY_MIGRATION); | |
51d7a9eb | 1970 | } |
e226939d | 1971 | xen_modified_memory(addr, length); |
51d7a9eb AP |
1972 | } |
1973 | ||
23326164 | 1974 | static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr) |
82f2563f | 1975 | { |
e1622f4b | 1976 | unsigned access_size_max = mr->ops->valid.max_access_size; |
23326164 RH |
1977 | |
1978 | /* Regions are assumed to support 1-4 byte accesses unless | |
1979 | otherwise specified. */ | |
23326164 RH |
1980 | if (access_size_max == 0) { |
1981 | access_size_max = 4; | |
1982 | } | |
1983 | ||
1984 | /* Bound the maximum access by the alignment of the address. */ | |
1985 | if (!mr->ops->impl.unaligned) { | |
1986 | unsigned align_size_max = addr & -addr; | |
1987 | if (align_size_max != 0 && align_size_max < access_size_max) { | |
1988 | access_size_max = align_size_max; | |
1989 | } | |
82f2563f | 1990 | } |
23326164 RH |
1991 | |
1992 | /* Don't attempt accesses larger than the maximum. */ | |
1993 | if (l > access_size_max) { | |
1994 | l = access_size_max; | |
82f2563f | 1995 | } |
098178f2 PB |
1996 | if (l & (l - 1)) { |
1997 | l = 1 << (qemu_fls(l) - 1); | |
1998 | } | |
23326164 RH |
1999 | |
2000 | return l; | |
82f2563f PB |
2001 | } |
2002 | ||
fd8aaa76 | 2003 | bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf, |
ac1970fb | 2004 | int len, bool is_write) |
13eb76e0 | 2005 | { |
149f54b5 | 2006 | hwaddr l; |
13eb76e0 | 2007 | uint8_t *ptr; |
791af8c8 | 2008 | uint64_t val; |
149f54b5 | 2009 | hwaddr addr1; |
5c8a00ce | 2010 | MemoryRegion *mr; |
fd8aaa76 | 2011 | bool error = false; |
3b46e624 | 2012 | |
13eb76e0 | 2013 | while (len > 0) { |
149f54b5 | 2014 | l = len; |
5c8a00ce | 2015 | mr = address_space_translate(as, addr, &addr1, &l, is_write); |
3b46e624 | 2016 | |
13eb76e0 | 2017 | if (is_write) { |
5c8a00ce PB |
2018 | if (!memory_access_is_direct(mr, is_write)) { |
2019 | l = memory_access_size(mr, l, addr1); | |
4917cf44 | 2020 | /* XXX: could force current_cpu to NULL to avoid |
6a00d601 | 2021 | potential bugs */ |
23326164 RH |
2022 | switch (l) { |
2023 | case 8: | |
2024 | /* 64 bit write access */ | |
2025 | val = ldq_p(buf); | |
2026 | error |= io_mem_write(mr, addr1, val, 8); | |
2027 | break; | |
2028 | case 4: | |
1c213d19 | 2029 | /* 32 bit write access */ |
c27004ec | 2030 | val = ldl_p(buf); |
5c8a00ce | 2031 | error |= io_mem_write(mr, addr1, val, 4); |
23326164 RH |
2032 | break; |
2033 | case 2: | |
1c213d19 | 2034 | /* 16 bit write access */ |
c27004ec | 2035 | val = lduw_p(buf); |
5c8a00ce | 2036 | error |= io_mem_write(mr, addr1, val, 2); |
23326164 RH |
2037 | break; |
2038 | case 1: | |
1c213d19 | 2039 | /* 8 bit write access */ |
c27004ec | 2040 | val = ldub_p(buf); |
5c8a00ce | 2041 | error |= io_mem_write(mr, addr1, val, 1); |
23326164 RH |
2042 | break; |
2043 | default: | |
2044 | abort(); | |
13eb76e0 | 2045 | } |
2bbfa05d | 2046 | } else { |
5c8a00ce | 2047 | addr1 += memory_region_get_ram_addr(mr); |
13eb76e0 | 2048 | /* RAM case */ |
5579c7f3 | 2049 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 2050 | memcpy(ptr, buf, l); |
51d7a9eb | 2051 | invalidate_and_set_dirty(addr1, l); |
13eb76e0 FB |
2052 | } |
2053 | } else { | |
5c8a00ce | 2054 | if (!memory_access_is_direct(mr, is_write)) { |
13eb76e0 | 2055 | /* I/O case */ |
5c8a00ce | 2056 | l = memory_access_size(mr, l, addr1); |
23326164 RH |
2057 | switch (l) { |
2058 | case 8: | |
2059 | /* 64 bit read access */ | |
2060 | error |= io_mem_read(mr, addr1, &val, 8); | |
2061 | stq_p(buf, val); | |
2062 | break; | |
2063 | case 4: | |
13eb76e0 | 2064 | /* 32 bit read access */ |
5c8a00ce | 2065 | error |= io_mem_read(mr, addr1, &val, 4); |
c27004ec | 2066 | stl_p(buf, val); |
23326164 RH |
2067 | break; |
2068 | case 2: | |
13eb76e0 | 2069 | /* 16 bit read access */ |
5c8a00ce | 2070 | error |= io_mem_read(mr, addr1, &val, 2); |
c27004ec | 2071 | stw_p(buf, val); |
23326164 RH |
2072 | break; |
2073 | case 1: | |
1c213d19 | 2074 | /* 8 bit read access */ |
5c8a00ce | 2075 | error |= io_mem_read(mr, addr1, &val, 1); |
c27004ec | 2076 | stb_p(buf, val); |
23326164 RH |
2077 | break; |
2078 | default: | |
2079 | abort(); | |
13eb76e0 FB |
2080 | } |
2081 | } else { | |
2082 | /* RAM case */ | |
5c8a00ce | 2083 | ptr = qemu_get_ram_ptr(mr->ram_addr + addr1); |
f3705d53 | 2084 | memcpy(buf, ptr, l); |
13eb76e0 FB |
2085 | } |
2086 | } | |
2087 | len -= l; | |
2088 | buf += l; | |
2089 | addr += l; | |
2090 | } | |
fd8aaa76 PB |
2091 | |
2092 | return error; | |
13eb76e0 | 2093 | } |
8df1cd07 | 2094 | |
fd8aaa76 | 2095 | bool address_space_write(AddressSpace *as, hwaddr addr, |
ac1970fb AK |
2096 | const uint8_t *buf, int len) |
2097 | { | |
fd8aaa76 | 2098 | return address_space_rw(as, addr, (uint8_t *)buf, len, true); |
ac1970fb AK |
2099 | } |
2100 | ||
fd8aaa76 | 2101 | bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len) |
ac1970fb | 2102 | { |
fd8aaa76 | 2103 | return address_space_rw(as, addr, buf, len, false); |
ac1970fb AK |
2104 | } |
2105 | ||
2106 | ||
a8170e5e | 2107 | void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, |
ac1970fb AK |
2108 | int len, int is_write) |
2109 | { | |
fd8aaa76 | 2110 | address_space_rw(&address_space_memory, addr, buf, len, is_write); |
ac1970fb AK |
2111 | } |
2112 | ||
582b55a9 AG |
2113 | enum write_rom_type { |
2114 | WRITE_DATA, | |
2115 | FLUSH_CACHE, | |
2116 | }; | |
2117 | ||
2a221651 | 2118 | static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, |
582b55a9 | 2119 | hwaddr addr, const uint8_t *buf, int len, enum write_rom_type type) |
d0ecd2aa | 2120 | { |
149f54b5 | 2121 | hwaddr l; |
d0ecd2aa | 2122 | uint8_t *ptr; |
149f54b5 | 2123 | hwaddr addr1; |
5c8a00ce | 2124 | MemoryRegion *mr; |
3b46e624 | 2125 | |
d0ecd2aa | 2126 | while (len > 0) { |
149f54b5 | 2127 | l = len; |
2a221651 | 2128 | mr = address_space_translate(as, addr, &addr1, &l, true); |
3b46e624 | 2129 | |
5c8a00ce PB |
2130 | if (!(memory_region_is_ram(mr) || |
2131 | memory_region_is_romd(mr))) { | |
d0ecd2aa FB |
2132 | /* do nothing */ |
2133 | } else { | |
5c8a00ce | 2134 | addr1 += memory_region_get_ram_addr(mr); |
d0ecd2aa | 2135 | /* ROM/RAM case */ |
5579c7f3 | 2136 | ptr = qemu_get_ram_ptr(addr1); |
582b55a9 AG |
2137 | switch (type) { |
2138 | case WRITE_DATA: | |
2139 | memcpy(ptr, buf, l); | |
2140 | invalidate_and_set_dirty(addr1, l); | |
2141 | break; | |
2142 | case FLUSH_CACHE: | |
2143 | flush_icache_range((uintptr_t)ptr, (uintptr_t)ptr + l); | |
2144 | break; | |
2145 | } | |
d0ecd2aa FB |
2146 | } |
2147 | len -= l; | |
2148 | buf += l; | |
2149 | addr += l; | |
2150 | } | |
2151 | } | |
2152 | ||
582b55a9 | 2153 | /* used for ROM loading : can write in RAM and ROM */ |
2a221651 | 2154 | void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr, |
582b55a9 AG |
2155 | const uint8_t *buf, int len) |
2156 | { | |
2a221651 | 2157 | cpu_physical_memory_write_rom_internal(as, addr, buf, len, WRITE_DATA); |
582b55a9 AG |
2158 | } |
2159 | ||
2160 | void cpu_flush_icache_range(hwaddr start, int len) | |
2161 | { | |
2162 | /* | |
2163 | * This function should do the same thing as an icache flush that was | |
2164 | * triggered from within the guest. For TCG we are always cache coherent, | |
2165 | * so there is no need to flush anything. For KVM / Xen we need to flush | |
2166 | * the host's instruction cache at least. | |
2167 | */ | |
2168 | if (tcg_enabled()) { | |
2169 | return; | |
2170 | } | |
2171 | ||
2a221651 EI |
2172 | cpu_physical_memory_write_rom_internal(&address_space_memory, |
2173 | start, NULL, len, FLUSH_CACHE); | |
582b55a9 AG |
2174 | } |
2175 | ||
6d16c2f8 | 2176 | typedef struct { |
d3e71559 | 2177 | MemoryRegion *mr; |
6d16c2f8 | 2178 | void *buffer; |
a8170e5e AK |
2179 | hwaddr addr; |
2180 | hwaddr len; | |
6d16c2f8 AL |
2181 | } BounceBuffer; |
2182 | ||
2183 | static BounceBuffer bounce; | |
2184 | ||
ba223c29 AL |
2185 | typedef struct MapClient { |
2186 | void *opaque; | |
2187 | void (*callback)(void *opaque); | |
72cf2d4f | 2188 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
2189 | } MapClient; |
2190 | ||
72cf2d4f BS |
2191 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
2192 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
2193 | |
2194 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
2195 | { | |
7267c094 | 2196 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
2197 | |
2198 | client->opaque = opaque; | |
2199 | client->callback = callback; | |
72cf2d4f | 2200 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
2201 | return client; |
2202 | } | |
2203 | ||
8b9c99d9 | 2204 | static void cpu_unregister_map_client(void *_client) |
ba223c29 AL |
2205 | { |
2206 | MapClient *client = (MapClient *)_client; | |
2207 | ||
72cf2d4f | 2208 | QLIST_REMOVE(client, link); |
7267c094 | 2209 | g_free(client); |
ba223c29 AL |
2210 | } |
2211 | ||
2212 | static void cpu_notify_map_clients(void) | |
2213 | { | |
2214 | MapClient *client; | |
2215 | ||
72cf2d4f BS |
2216 | while (!QLIST_EMPTY(&map_client_list)) { |
2217 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 2218 | client->callback(client->opaque); |
34d5e948 | 2219 | cpu_unregister_map_client(client); |
ba223c29 AL |
2220 | } |
2221 | } | |
2222 | ||
51644ab7 PB |
2223 | bool address_space_access_valid(AddressSpace *as, hwaddr addr, int len, bool is_write) |
2224 | { | |
5c8a00ce | 2225 | MemoryRegion *mr; |
51644ab7 PB |
2226 | hwaddr l, xlat; |
2227 | ||
2228 | while (len > 0) { | |
2229 | l = len; | |
5c8a00ce PB |
2230 | mr = address_space_translate(as, addr, &xlat, &l, is_write); |
2231 | if (!memory_access_is_direct(mr, is_write)) { | |
2232 | l = memory_access_size(mr, l, addr); | |
2233 | if (!memory_region_access_valid(mr, xlat, l, is_write)) { | |
51644ab7 PB |
2234 | return false; |
2235 | } | |
2236 | } | |
2237 | ||
2238 | len -= l; | |
2239 | addr += l; | |
2240 | } | |
2241 | return true; | |
2242 | } | |
2243 | ||
6d16c2f8 AL |
2244 | /* Map a physical memory region into a host virtual address. |
2245 | * May map a subset of the requested range, given by and returned in *plen. | |
2246 | * May return NULL if resources needed to perform the mapping are exhausted. | |
2247 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
2248 | * Use cpu_register_map_client() to know when retrying the map operation is |
2249 | * likely to succeed. | |
6d16c2f8 | 2250 | */ |
ac1970fb | 2251 | void *address_space_map(AddressSpace *as, |
a8170e5e AK |
2252 | hwaddr addr, |
2253 | hwaddr *plen, | |
ac1970fb | 2254 | bool is_write) |
6d16c2f8 | 2255 | { |
a8170e5e | 2256 | hwaddr len = *plen; |
e3127ae0 PB |
2257 | hwaddr done = 0; |
2258 | hwaddr l, xlat, base; | |
2259 | MemoryRegion *mr, *this_mr; | |
2260 | ram_addr_t raddr; | |
6d16c2f8 | 2261 | |
e3127ae0 PB |
2262 | if (len == 0) { |
2263 | return NULL; | |
2264 | } | |
38bee5dc | 2265 | |
e3127ae0 PB |
2266 | l = len; |
2267 | mr = address_space_translate(as, addr, &xlat, &l, is_write); | |
2268 | if (!memory_access_is_direct(mr, is_write)) { | |
2269 | if (bounce.buffer) { | |
2270 | return NULL; | |
6d16c2f8 | 2271 | } |
e85d9db5 KW |
2272 | /* Avoid unbounded allocations */ |
2273 | l = MIN(l, TARGET_PAGE_SIZE); | |
2274 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, l); | |
e3127ae0 PB |
2275 | bounce.addr = addr; |
2276 | bounce.len = l; | |
d3e71559 PB |
2277 | |
2278 | memory_region_ref(mr); | |
2279 | bounce.mr = mr; | |
e3127ae0 PB |
2280 | if (!is_write) { |
2281 | address_space_read(as, addr, bounce.buffer, l); | |
8ab934f9 | 2282 | } |
6d16c2f8 | 2283 | |
e3127ae0 PB |
2284 | *plen = l; |
2285 | return bounce.buffer; | |
2286 | } | |
2287 | ||
2288 | base = xlat; | |
2289 | raddr = memory_region_get_ram_addr(mr); | |
2290 | ||
2291 | for (;;) { | |
6d16c2f8 AL |
2292 | len -= l; |
2293 | addr += l; | |
e3127ae0 PB |
2294 | done += l; |
2295 | if (len == 0) { | |
2296 | break; | |
2297 | } | |
2298 | ||
2299 | l = len; | |
2300 | this_mr = address_space_translate(as, addr, &xlat, &l, is_write); | |
2301 | if (this_mr != mr || xlat != base + done) { | |
2302 | break; | |
2303 | } | |
6d16c2f8 | 2304 | } |
e3127ae0 | 2305 | |
d3e71559 | 2306 | memory_region_ref(mr); |
e3127ae0 PB |
2307 | *plen = done; |
2308 | return qemu_ram_ptr_length(raddr + base, plen); | |
6d16c2f8 AL |
2309 | } |
2310 | ||
ac1970fb | 2311 | /* Unmaps a memory region previously mapped by address_space_map(). |
6d16c2f8 AL |
2312 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
2313 | * the amount of memory that was actually read or written by the caller. | |
2314 | */ | |
a8170e5e AK |
2315 | void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, |
2316 | int is_write, hwaddr access_len) | |
6d16c2f8 AL |
2317 | { |
2318 | if (buffer != bounce.buffer) { | |
d3e71559 PB |
2319 | MemoryRegion *mr; |
2320 | ram_addr_t addr1; | |
2321 | ||
2322 | mr = qemu_ram_addr_from_host(buffer, &addr1); | |
2323 | assert(mr != NULL); | |
6d16c2f8 | 2324 | if (is_write) { |
6d16c2f8 AL |
2325 | while (access_len) { |
2326 | unsigned l; | |
2327 | l = TARGET_PAGE_SIZE; | |
2328 | if (l > access_len) | |
2329 | l = access_len; | |
51d7a9eb | 2330 | invalidate_and_set_dirty(addr1, l); |
6d16c2f8 AL |
2331 | addr1 += l; |
2332 | access_len -= l; | |
2333 | } | |
2334 | } | |
868bb33f | 2335 | if (xen_enabled()) { |
e41d7c69 | 2336 | xen_invalidate_map_cache_entry(buffer); |
050a0ddf | 2337 | } |
d3e71559 | 2338 | memory_region_unref(mr); |
6d16c2f8 AL |
2339 | return; |
2340 | } | |
2341 | if (is_write) { | |
ac1970fb | 2342 | address_space_write(as, bounce.addr, bounce.buffer, access_len); |
6d16c2f8 | 2343 | } |
f8a83245 | 2344 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 2345 | bounce.buffer = NULL; |
d3e71559 | 2346 | memory_region_unref(bounce.mr); |
ba223c29 | 2347 | cpu_notify_map_clients(); |
6d16c2f8 | 2348 | } |
d0ecd2aa | 2349 | |
a8170e5e AK |
2350 | void *cpu_physical_memory_map(hwaddr addr, |
2351 | hwaddr *plen, | |
ac1970fb AK |
2352 | int is_write) |
2353 | { | |
2354 | return address_space_map(&address_space_memory, addr, plen, is_write); | |
2355 | } | |
2356 | ||
a8170e5e AK |
2357 | void cpu_physical_memory_unmap(void *buffer, hwaddr len, |
2358 | int is_write, hwaddr access_len) | |
ac1970fb AK |
2359 | { |
2360 | return address_space_unmap(&address_space_memory, buffer, len, is_write, access_len); | |
2361 | } | |
2362 | ||
8df1cd07 | 2363 | /* warning: addr must be aligned */ |
fdfba1a2 | 2364 | static inline uint32_t ldl_phys_internal(AddressSpace *as, hwaddr addr, |
1e78bcc1 | 2365 | enum device_endian endian) |
8df1cd07 | 2366 | { |
8df1cd07 | 2367 | uint8_t *ptr; |
791af8c8 | 2368 | uint64_t val; |
5c8a00ce | 2369 | MemoryRegion *mr; |
149f54b5 PB |
2370 | hwaddr l = 4; |
2371 | hwaddr addr1; | |
8df1cd07 | 2372 | |
fdfba1a2 | 2373 | mr = address_space_translate(as, addr, &addr1, &l, false); |
5c8a00ce | 2374 | if (l < 4 || !memory_access_is_direct(mr, false)) { |
8df1cd07 | 2375 | /* I/O case */ |
5c8a00ce | 2376 | io_mem_read(mr, addr1, &val, 4); |
1e78bcc1 AG |
2377 | #if defined(TARGET_WORDS_BIGENDIAN) |
2378 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2379 | val = bswap32(val); | |
2380 | } | |
2381 | #else | |
2382 | if (endian == DEVICE_BIG_ENDIAN) { | |
2383 | val = bswap32(val); | |
2384 | } | |
2385 | #endif | |
8df1cd07 FB |
2386 | } else { |
2387 | /* RAM case */ | |
5c8a00ce | 2388 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2389 | & TARGET_PAGE_MASK) |
149f54b5 | 2390 | + addr1); |
1e78bcc1 AG |
2391 | switch (endian) { |
2392 | case DEVICE_LITTLE_ENDIAN: | |
2393 | val = ldl_le_p(ptr); | |
2394 | break; | |
2395 | case DEVICE_BIG_ENDIAN: | |
2396 | val = ldl_be_p(ptr); | |
2397 | break; | |
2398 | default: | |
2399 | val = ldl_p(ptr); | |
2400 | break; | |
2401 | } | |
8df1cd07 FB |
2402 | } |
2403 | return val; | |
2404 | } | |
2405 | ||
fdfba1a2 | 2406 | uint32_t ldl_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2407 | { |
fdfba1a2 | 2408 | return ldl_phys_internal(as, addr, DEVICE_NATIVE_ENDIAN); |
1e78bcc1 AG |
2409 | } |
2410 | ||
fdfba1a2 | 2411 | uint32_t ldl_le_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2412 | { |
fdfba1a2 | 2413 | return ldl_phys_internal(as, addr, DEVICE_LITTLE_ENDIAN); |
1e78bcc1 AG |
2414 | } |
2415 | ||
fdfba1a2 | 2416 | uint32_t ldl_be_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2417 | { |
fdfba1a2 | 2418 | return ldl_phys_internal(as, addr, DEVICE_BIG_ENDIAN); |
1e78bcc1 AG |
2419 | } |
2420 | ||
84b7b8e7 | 2421 | /* warning: addr must be aligned */ |
2c17449b | 2422 | static inline uint64_t ldq_phys_internal(AddressSpace *as, hwaddr addr, |
1e78bcc1 | 2423 | enum device_endian endian) |
84b7b8e7 | 2424 | { |
84b7b8e7 FB |
2425 | uint8_t *ptr; |
2426 | uint64_t val; | |
5c8a00ce | 2427 | MemoryRegion *mr; |
149f54b5 PB |
2428 | hwaddr l = 8; |
2429 | hwaddr addr1; | |
84b7b8e7 | 2430 | |
2c17449b | 2431 | mr = address_space_translate(as, addr, &addr1, &l, |
5c8a00ce PB |
2432 | false); |
2433 | if (l < 8 || !memory_access_is_direct(mr, false)) { | |
84b7b8e7 | 2434 | /* I/O case */ |
5c8a00ce | 2435 | io_mem_read(mr, addr1, &val, 8); |
968a5627 PB |
2436 | #if defined(TARGET_WORDS_BIGENDIAN) |
2437 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2438 | val = bswap64(val); | |
2439 | } | |
2440 | #else | |
2441 | if (endian == DEVICE_BIG_ENDIAN) { | |
2442 | val = bswap64(val); | |
2443 | } | |
84b7b8e7 FB |
2444 | #endif |
2445 | } else { | |
2446 | /* RAM case */ | |
5c8a00ce | 2447 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2448 | & TARGET_PAGE_MASK) |
149f54b5 | 2449 | + addr1); |
1e78bcc1 AG |
2450 | switch (endian) { |
2451 | case DEVICE_LITTLE_ENDIAN: | |
2452 | val = ldq_le_p(ptr); | |
2453 | break; | |
2454 | case DEVICE_BIG_ENDIAN: | |
2455 | val = ldq_be_p(ptr); | |
2456 | break; | |
2457 | default: | |
2458 | val = ldq_p(ptr); | |
2459 | break; | |
2460 | } | |
84b7b8e7 FB |
2461 | } |
2462 | return val; | |
2463 | } | |
2464 | ||
2c17449b | 2465 | uint64_t ldq_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2466 | { |
2c17449b | 2467 | return ldq_phys_internal(as, addr, DEVICE_NATIVE_ENDIAN); |
1e78bcc1 AG |
2468 | } |
2469 | ||
2c17449b | 2470 | uint64_t ldq_le_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2471 | { |
2c17449b | 2472 | return ldq_phys_internal(as, addr, DEVICE_LITTLE_ENDIAN); |
1e78bcc1 AG |
2473 | } |
2474 | ||
2c17449b | 2475 | uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2476 | { |
2c17449b | 2477 | return ldq_phys_internal(as, addr, DEVICE_BIG_ENDIAN); |
1e78bcc1 AG |
2478 | } |
2479 | ||
aab33094 | 2480 | /* XXX: optimize */ |
2c17449b | 2481 | uint32_t ldub_phys(AddressSpace *as, hwaddr addr) |
aab33094 FB |
2482 | { |
2483 | uint8_t val; | |
2c17449b | 2484 | address_space_rw(as, addr, &val, 1, 0); |
aab33094 FB |
2485 | return val; |
2486 | } | |
2487 | ||
733f0b02 | 2488 | /* warning: addr must be aligned */ |
41701aa4 | 2489 | static inline uint32_t lduw_phys_internal(AddressSpace *as, hwaddr addr, |
1e78bcc1 | 2490 | enum device_endian endian) |
aab33094 | 2491 | { |
733f0b02 MT |
2492 | uint8_t *ptr; |
2493 | uint64_t val; | |
5c8a00ce | 2494 | MemoryRegion *mr; |
149f54b5 PB |
2495 | hwaddr l = 2; |
2496 | hwaddr addr1; | |
733f0b02 | 2497 | |
41701aa4 | 2498 | mr = address_space_translate(as, addr, &addr1, &l, |
5c8a00ce PB |
2499 | false); |
2500 | if (l < 2 || !memory_access_is_direct(mr, false)) { | |
733f0b02 | 2501 | /* I/O case */ |
5c8a00ce | 2502 | io_mem_read(mr, addr1, &val, 2); |
1e78bcc1 AG |
2503 | #if defined(TARGET_WORDS_BIGENDIAN) |
2504 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2505 | val = bswap16(val); | |
2506 | } | |
2507 | #else | |
2508 | if (endian == DEVICE_BIG_ENDIAN) { | |
2509 | val = bswap16(val); | |
2510 | } | |
2511 | #endif | |
733f0b02 MT |
2512 | } else { |
2513 | /* RAM case */ | |
5c8a00ce | 2514 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2515 | & TARGET_PAGE_MASK) |
149f54b5 | 2516 | + addr1); |
1e78bcc1 AG |
2517 | switch (endian) { |
2518 | case DEVICE_LITTLE_ENDIAN: | |
2519 | val = lduw_le_p(ptr); | |
2520 | break; | |
2521 | case DEVICE_BIG_ENDIAN: | |
2522 | val = lduw_be_p(ptr); | |
2523 | break; | |
2524 | default: | |
2525 | val = lduw_p(ptr); | |
2526 | break; | |
2527 | } | |
733f0b02 MT |
2528 | } |
2529 | return val; | |
aab33094 FB |
2530 | } |
2531 | ||
41701aa4 | 2532 | uint32_t lduw_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2533 | { |
41701aa4 | 2534 | return lduw_phys_internal(as, addr, DEVICE_NATIVE_ENDIAN); |
1e78bcc1 AG |
2535 | } |
2536 | ||
41701aa4 | 2537 | uint32_t lduw_le_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2538 | { |
41701aa4 | 2539 | return lduw_phys_internal(as, addr, DEVICE_LITTLE_ENDIAN); |
1e78bcc1 AG |
2540 | } |
2541 | ||
41701aa4 | 2542 | uint32_t lduw_be_phys(AddressSpace *as, hwaddr addr) |
1e78bcc1 | 2543 | { |
41701aa4 | 2544 | return lduw_phys_internal(as, addr, DEVICE_BIG_ENDIAN); |
1e78bcc1 AG |
2545 | } |
2546 | ||
8df1cd07 FB |
2547 | /* warning: addr must be aligned. The ram page is not masked as dirty |
2548 | and the code inside is not invalidated. It is useful if the dirty | |
2549 | bits are used to track modified PTEs */ | |
2198a121 | 2550 | void stl_phys_notdirty(AddressSpace *as, hwaddr addr, uint32_t val) |
8df1cd07 | 2551 | { |
8df1cd07 | 2552 | uint8_t *ptr; |
5c8a00ce | 2553 | MemoryRegion *mr; |
149f54b5 PB |
2554 | hwaddr l = 4; |
2555 | hwaddr addr1; | |
8df1cd07 | 2556 | |
2198a121 | 2557 | mr = address_space_translate(as, addr, &addr1, &l, |
5c8a00ce PB |
2558 | true); |
2559 | if (l < 4 || !memory_access_is_direct(mr, true)) { | |
2560 | io_mem_write(mr, addr1, val, 4); | |
8df1cd07 | 2561 | } else { |
5c8a00ce | 2562 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
5579c7f3 | 2563 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 2564 | stl_p(ptr, val); |
74576198 AL |
2565 | |
2566 | if (unlikely(in_migration)) { | |
a2cd8c85 | 2567 | if (cpu_physical_memory_is_clean(addr1)) { |
74576198 AL |
2568 | /* invalidate code */ |
2569 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
2570 | /* set dirty bit */ | |
52159192 JQ |
2571 | cpu_physical_memory_set_dirty_flag(addr1, |
2572 | DIRTY_MEMORY_MIGRATION); | |
2573 | cpu_physical_memory_set_dirty_flag(addr1, DIRTY_MEMORY_VGA); | |
74576198 AL |
2574 | } |
2575 | } | |
8df1cd07 FB |
2576 | } |
2577 | } | |
2578 | ||
2579 | /* warning: addr must be aligned */ | |
ab1da857 EI |
2580 | static inline void stl_phys_internal(AddressSpace *as, |
2581 | hwaddr addr, uint32_t val, | |
1e78bcc1 | 2582 | enum device_endian endian) |
8df1cd07 | 2583 | { |
8df1cd07 | 2584 | uint8_t *ptr; |
5c8a00ce | 2585 | MemoryRegion *mr; |
149f54b5 PB |
2586 | hwaddr l = 4; |
2587 | hwaddr addr1; | |
8df1cd07 | 2588 | |
ab1da857 | 2589 | mr = address_space_translate(as, addr, &addr1, &l, |
5c8a00ce PB |
2590 | true); |
2591 | if (l < 4 || !memory_access_is_direct(mr, true)) { | |
1e78bcc1 AG |
2592 | #if defined(TARGET_WORDS_BIGENDIAN) |
2593 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2594 | val = bswap32(val); | |
2595 | } | |
2596 | #else | |
2597 | if (endian == DEVICE_BIG_ENDIAN) { | |
2598 | val = bswap32(val); | |
2599 | } | |
2600 | #endif | |
5c8a00ce | 2601 | io_mem_write(mr, addr1, val, 4); |
8df1cd07 | 2602 | } else { |
8df1cd07 | 2603 | /* RAM case */ |
5c8a00ce | 2604 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
5579c7f3 | 2605 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2606 | switch (endian) { |
2607 | case DEVICE_LITTLE_ENDIAN: | |
2608 | stl_le_p(ptr, val); | |
2609 | break; | |
2610 | case DEVICE_BIG_ENDIAN: | |
2611 | stl_be_p(ptr, val); | |
2612 | break; | |
2613 | default: | |
2614 | stl_p(ptr, val); | |
2615 | break; | |
2616 | } | |
51d7a9eb | 2617 | invalidate_and_set_dirty(addr1, 4); |
8df1cd07 FB |
2618 | } |
2619 | } | |
2620 | ||
ab1da857 | 2621 | void stl_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
1e78bcc1 | 2622 | { |
ab1da857 | 2623 | stl_phys_internal(as, addr, val, DEVICE_NATIVE_ENDIAN); |
1e78bcc1 AG |
2624 | } |
2625 | ||
ab1da857 | 2626 | void stl_le_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
1e78bcc1 | 2627 | { |
ab1da857 | 2628 | stl_phys_internal(as, addr, val, DEVICE_LITTLE_ENDIAN); |
1e78bcc1 AG |
2629 | } |
2630 | ||
ab1da857 | 2631 | void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
1e78bcc1 | 2632 | { |
ab1da857 | 2633 | stl_phys_internal(as, addr, val, DEVICE_BIG_ENDIAN); |
1e78bcc1 AG |
2634 | } |
2635 | ||
aab33094 | 2636 | /* XXX: optimize */ |
db3be60d | 2637 | void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
aab33094 FB |
2638 | { |
2639 | uint8_t v = val; | |
db3be60d | 2640 | address_space_rw(as, addr, &v, 1, 1); |
aab33094 FB |
2641 | } |
2642 | ||
733f0b02 | 2643 | /* warning: addr must be aligned */ |
5ce5944d EI |
2644 | static inline void stw_phys_internal(AddressSpace *as, |
2645 | hwaddr addr, uint32_t val, | |
1e78bcc1 | 2646 | enum device_endian endian) |
aab33094 | 2647 | { |
733f0b02 | 2648 | uint8_t *ptr; |
5c8a00ce | 2649 | MemoryRegion *mr; |
149f54b5 PB |
2650 | hwaddr l = 2; |
2651 | hwaddr addr1; | |
733f0b02 | 2652 | |
5ce5944d | 2653 | mr = address_space_translate(as, addr, &addr1, &l, true); |
5c8a00ce | 2654 | if (l < 2 || !memory_access_is_direct(mr, true)) { |
1e78bcc1 AG |
2655 | #if defined(TARGET_WORDS_BIGENDIAN) |
2656 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2657 | val = bswap16(val); | |
2658 | } | |
2659 | #else | |
2660 | if (endian == DEVICE_BIG_ENDIAN) { | |
2661 | val = bswap16(val); | |
2662 | } | |
2663 | #endif | |
5c8a00ce | 2664 | io_mem_write(mr, addr1, val, 2); |
733f0b02 | 2665 | } else { |
733f0b02 | 2666 | /* RAM case */ |
5c8a00ce | 2667 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
733f0b02 | 2668 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2669 | switch (endian) { |
2670 | case DEVICE_LITTLE_ENDIAN: | |
2671 | stw_le_p(ptr, val); | |
2672 | break; | |
2673 | case DEVICE_BIG_ENDIAN: | |
2674 | stw_be_p(ptr, val); | |
2675 | break; | |
2676 | default: | |
2677 | stw_p(ptr, val); | |
2678 | break; | |
2679 | } | |
51d7a9eb | 2680 | invalidate_and_set_dirty(addr1, 2); |
733f0b02 | 2681 | } |
aab33094 FB |
2682 | } |
2683 | ||
5ce5944d | 2684 | void stw_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
1e78bcc1 | 2685 | { |
5ce5944d | 2686 | stw_phys_internal(as, addr, val, DEVICE_NATIVE_ENDIAN); |
1e78bcc1 AG |
2687 | } |
2688 | ||
5ce5944d | 2689 | void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
1e78bcc1 | 2690 | { |
5ce5944d | 2691 | stw_phys_internal(as, addr, val, DEVICE_LITTLE_ENDIAN); |
1e78bcc1 AG |
2692 | } |
2693 | ||
5ce5944d | 2694 | void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val) |
1e78bcc1 | 2695 | { |
5ce5944d | 2696 | stw_phys_internal(as, addr, val, DEVICE_BIG_ENDIAN); |
1e78bcc1 AG |
2697 | } |
2698 | ||
aab33094 | 2699 | /* XXX: optimize */ |
f606604f | 2700 | void stq_phys(AddressSpace *as, hwaddr addr, uint64_t val) |
aab33094 FB |
2701 | { |
2702 | val = tswap64(val); | |
f606604f | 2703 | address_space_rw(as, addr, (void *) &val, 8, 1); |
aab33094 FB |
2704 | } |
2705 | ||
f606604f | 2706 | void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2707 | { |
2708 | val = cpu_to_le64(val); | |
f606604f | 2709 | address_space_rw(as, addr, (void *) &val, 8, 1); |
1e78bcc1 AG |
2710 | } |
2711 | ||
f606604f | 2712 | void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2713 | { |
2714 | val = cpu_to_be64(val); | |
f606604f | 2715 | address_space_rw(as, addr, (void *) &val, 8, 1); |
1e78bcc1 AG |
2716 | } |
2717 | ||
5e2972fd | 2718 | /* virtual memory access for debug (includes writing to ROM) */ |
f17ec444 | 2719 | int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, |
b448f2f3 | 2720 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
2721 | { |
2722 | int l; | |
a8170e5e | 2723 | hwaddr phys_addr; |
9b3c35e0 | 2724 | target_ulong page; |
13eb76e0 FB |
2725 | |
2726 | while (len > 0) { | |
2727 | page = addr & TARGET_PAGE_MASK; | |
f17ec444 | 2728 | phys_addr = cpu_get_phys_page_debug(cpu, page); |
13eb76e0 FB |
2729 | /* if no physical page mapped, return an error */ |
2730 | if (phys_addr == -1) | |
2731 | return -1; | |
2732 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2733 | if (l > len) | |
2734 | l = len; | |
5e2972fd | 2735 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
2e38847b EI |
2736 | if (is_write) { |
2737 | cpu_physical_memory_write_rom(cpu->as, phys_addr, buf, l); | |
2738 | } else { | |
2739 | address_space_rw(cpu->as, phys_addr, buf, l, 0); | |
2740 | } | |
13eb76e0 FB |
2741 | len -= l; |
2742 | buf += l; | |
2743 | addr += l; | |
2744 | } | |
2745 | return 0; | |
2746 | } | |
a68fe89c | 2747 | #endif |
13eb76e0 | 2748 | |
8e4a424b BS |
2749 | #if !defined(CONFIG_USER_ONLY) |
2750 | ||
2751 | /* | |
2752 | * A helper function for the _utterly broken_ virtio device model to find out if | |
2753 | * it's running on a big endian machine. Don't do this at home kids! | |
2754 | */ | |
2755 | bool virtio_is_big_endian(void); | |
2756 | bool virtio_is_big_endian(void) | |
2757 | { | |
2758 | #if defined(TARGET_WORDS_BIGENDIAN) | |
2759 | return true; | |
2760 | #else | |
2761 | return false; | |
2762 | #endif | |
2763 | } | |
2764 | ||
2765 | #endif | |
2766 | ||
76f35538 | 2767 | #ifndef CONFIG_USER_ONLY |
a8170e5e | 2768 | bool cpu_physical_memory_is_io(hwaddr phys_addr) |
76f35538 | 2769 | { |
5c8a00ce | 2770 | MemoryRegion*mr; |
149f54b5 | 2771 | hwaddr l = 1; |
76f35538 | 2772 | |
5c8a00ce PB |
2773 | mr = address_space_translate(&address_space_memory, |
2774 | phys_addr, &phys_addr, &l, false); | |
76f35538 | 2775 | |
5c8a00ce PB |
2776 | return !(memory_region_is_ram(mr) || |
2777 | memory_region_is_romd(mr)); | |
76f35538 | 2778 | } |
bd2fa51f MH |
2779 | |
2780 | void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque) | |
2781 | { | |
2782 | RAMBlock *block; | |
2783 | ||
2784 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
2785 | func(block->host, block->offset, block->length, opaque); | |
2786 | } | |
2787 | } | |
ec3f8c99 | 2788 | #endif |