1 /* 2 * QEMU emulation of AMD IOMMU (AMD-Vi) 3 * 4 * Copyright (C) 2011 Eduard - Gabriel Munteanu 5 * Copyright (C) 2015, 2016 David Kiarie Kahurani 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, see <http://www.gnu.org/licenses/>. 19 * 20 * Cache implementation inspired by hw/i386/intel_iommu.c 21 */ 22 23 #include "qemu/osdep.h" 24 #include "hw/i386/pc.h" 25 #include "hw/pci/msi.h" 26 #include "hw/pci/pci_bus.h" 27 #include "migration/vmstate.h" 28 #include "amd_iommu.h" 29 #include "qapi/error.h" 30 #include "qemu/error-report.h" 31 #include "hw/i386/apic_internal.h" 32 #include "trace.h" 33 #include "hw/i386/apic-msidef.h" 34 #include "hw/qdev-properties.h" 35 #include "kvm/kvm_i386.h" 36 37 /* used AMD-Vi MMIO registers */ 38 const char *amdvi_mmio_low[] = { 39 "AMDVI_MMIO_DEVTAB_BASE", 40 "AMDVI_MMIO_CMDBUF_BASE", 41 "AMDVI_MMIO_EVTLOG_BASE", 42 "AMDVI_MMIO_CONTROL", 43 "AMDVI_MMIO_EXCL_BASE", 44 "AMDVI_MMIO_EXCL_LIMIT", 45 "AMDVI_MMIO_EXT_FEATURES", 46 "AMDVI_MMIO_PPR_BASE", 47 "UNHANDLED" 48 }; 49 const char *amdvi_mmio_high[] = { 50 "AMDVI_MMIO_COMMAND_HEAD", 51 "AMDVI_MMIO_COMMAND_TAIL", 52 "AMDVI_MMIO_EVTLOG_HEAD", 53 "AMDVI_MMIO_EVTLOG_TAIL", 54 "AMDVI_MMIO_STATUS", 55 "AMDVI_MMIO_PPR_HEAD", 56 "AMDVI_MMIO_PPR_TAIL", 57 "UNHANDLED" 58 }; 59 60 struct AMDVIAddressSpace { 61 uint8_t bus_num; /* bus number */ 62 uint8_t devfn; /* device function */ 63 AMDVIState *iommu_state; /* AMDVI - one per machine */ 64 MemoryRegion root; /* AMDVI Root memory map region */ 65 IOMMUMemoryRegion iommu; /* Device's address translation region */ 66 MemoryRegion iommu_nodma; /* Alias of shared nodma memory region */ 67 MemoryRegion iommu_ir; /* Device's interrupt remapping region */ 68 AddressSpace as; /* device's corresponding address space */ 69 }; 70 71 /* AMDVI cache entry */ 72 typedef struct AMDVIIOTLBEntry { 73 uint16_t domid; /* assigned domain id */ 74 uint16_t devid; /* device owning entry */ 75 uint64_t perms; /* access permissions */ 76 uint64_t translated_addr; /* translated address */ 77 uint64_t page_mask; /* physical page size */ 78 } AMDVIIOTLBEntry; 79 80 uint64_t amdvi_extended_feature_register(AMDVIState *s) 81 { 82 uint64_t feature = AMDVI_DEFAULT_EXT_FEATURES; 83 if (s->xtsup) { 84 feature |= AMDVI_FEATURE_XT; 85 } 86 87 return feature; 88 } 89 90 /* configure MMIO registers at startup/reset */ 91 static void amdvi_set_quad(AMDVIState *s, hwaddr addr, uint64_t val, 92 uint64_t romask, uint64_t w1cmask) 93 { 94 stq_le_p(&s->mmior[addr], val); 95 stq_le_p(&s->romask[addr], romask); 96 stq_le_p(&s->w1cmask[addr], w1cmask); 97 } 98 99 static uint16_t amdvi_readw(AMDVIState *s, hwaddr addr) 100 { 101 return lduw_le_p(&s->mmior[addr]); 102 } 103 104 static uint32_t amdvi_readl(AMDVIState *s, hwaddr addr) 105 { 106 return ldl_le_p(&s->mmior[addr]); 107 } 108 109 static uint64_t amdvi_readq(AMDVIState *s, hwaddr addr) 110 { 111 return ldq_le_p(&s->mmior[addr]); 112 } 113 114 /* internal write */ 115 static void amdvi_writeq_raw(AMDVIState *s, hwaddr addr, uint64_t val) 116 { 117 stq_le_p(&s->mmior[addr], val); 118 } 119 120 /* external write */ 121 static void amdvi_writew(AMDVIState *s, hwaddr addr, uint16_t val) 122 { 123 uint16_t romask = lduw_le_p(&s->romask[addr]); 124 uint16_t w1cmask = lduw_le_p(&s->w1cmask[addr]); 125 uint16_t oldval = lduw_le_p(&s->mmior[addr]); 126 stw_le_p(&s->mmior[addr], 127 ((oldval & romask) | (val & ~romask)) & ~(val & w1cmask)); 128 } 129 130 static void amdvi_writel(AMDVIState *s, hwaddr addr, uint32_t val) 131 { 132 uint32_t romask = ldl_le_p(&s->romask[addr]); 133 uint32_t w1cmask = ldl_le_p(&s->w1cmask[addr]); 134 uint32_t oldval = ldl_le_p(&s->mmior[addr]); 135 stl_le_p(&s->mmior[addr], 136 ((oldval & romask) | (val & ~romask)) & ~(val & w1cmask)); 137 } 138 139 static void amdvi_writeq(AMDVIState *s, hwaddr addr, uint64_t val) 140 { 141 uint64_t romask = ldq_le_p(&s->romask[addr]); 142 uint64_t w1cmask = ldq_le_p(&s->w1cmask[addr]); 143 uint32_t oldval = ldq_le_p(&s->mmior[addr]); 144 stq_le_p(&s->mmior[addr], 145 ((oldval & romask) | (val & ~romask)) & ~(val & w1cmask)); 146 } 147 148 /* OR a 64-bit register with a 64-bit value */ 149 static bool amdvi_test_mask(AMDVIState *s, hwaddr addr, uint64_t val) 150 { 151 return amdvi_readq(s, addr) | val; 152 } 153 154 /* OR a 64-bit register with a 64-bit value storing result in the register */ 155 static void amdvi_assign_orq(AMDVIState *s, hwaddr addr, uint64_t val) 156 { 157 amdvi_writeq_raw(s, addr, amdvi_readq(s, addr) | val); 158 } 159 160 /* AND a 64-bit register with a 64-bit value storing result in the register */ 161 static void amdvi_assign_andq(AMDVIState *s, hwaddr addr, uint64_t val) 162 { 163 amdvi_writeq_raw(s, addr, amdvi_readq(s, addr) & val); 164 } 165 166 static void amdvi_generate_msi_interrupt(AMDVIState *s) 167 { 168 MSIMessage msg = {}; 169 MemTxAttrs attrs = { 170 .requester_id = pci_requester_id(&s->pci.dev) 171 }; 172 173 if (msi_enabled(&s->pci.dev)) { 174 msg = msi_get_message(&s->pci.dev, 0); 175 address_space_stl_le(&address_space_memory, msg.address, msg.data, 176 attrs, NULL); 177 } 178 } 179 180 static void amdvi_log_event(AMDVIState *s, uint64_t *evt) 181 { 182 /* event logging not enabled */ 183 if (!s->evtlog_enabled || amdvi_test_mask(s, AMDVI_MMIO_STATUS, 184 AMDVI_MMIO_STATUS_EVT_OVF)) { 185 return; 186 } 187 188 /* event log buffer full */ 189 if (s->evtlog_tail >= s->evtlog_len) { 190 amdvi_assign_orq(s, AMDVI_MMIO_STATUS, AMDVI_MMIO_STATUS_EVT_OVF); 191 /* generate interrupt */ 192 amdvi_generate_msi_interrupt(s); 193 return; 194 } 195 196 if (dma_memory_write(&address_space_memory, s->evtlog + s->evtlog_tail, 197 evt, AMDVI_EVENT_LEN, MEMTXATTRS_UNSPECIFIED)) { 198 trace_amdvi_evntlog_fail(s->evtlog, s->evtlog_tail); 199 } 200 201 s->evtlog_tail += AMDVI_EVENT_LEN; 202 amdvi_assign_orq(s, AMDVI_MMIO_STATUS, AMDVI_MMIO_STATUS_COMP_INT); 203 amdvi_generate_msi_interrupt(s); 204 } 205 206 static void amdvi_setevent_bits(uint64_t *buffer, uint64_t value, int start, 207 int length) 208 { 209 int index = start / 64, bitpos = start % 64; 210 uint64_t mask = MAKE_64BIT_MASK(start, length); 211 buffer[index] &= ~mask; 212 buffer[index] |= (value << bitpos) & mask; 213 } 214 /* 215 * AMDVi event structure 216 * 0:15 -> DeviceID 217 * 48:63 -> event type + miscellaneous info 218 * 64:127 -> related address 219 */ 220 static void amdvi_encode_event(uint64_t *evt, uint16_t devid, uint64_t addr, 221 uint16_t info) 222 { 223 evt[0] = 0; 224 evt[1] = 0; 225 226 amdvi_setevent_bits(evt, devid, 0, 16); 227 amdvi_setevent_bits(evt, info, 48, 16); 228 amdvi_setevent_bits(evt, addr, 64, 64); 229 } 230 /* log an error encountered during a page walk 231 * 232 * @addr: virtual address in translation request 233 */ 234 static void amdvi_page_fault(AMDVIState *s, uint16_t devid, 235 hwaddr addr, uint16_t info) 236 { 237 uint64_t evt[2]; 238 239 info |= AMDVI_EVENT_IOPF_I | AMDVI_EVENT_IOPF; 240 amdvi_encode_event(evt, devid, addr, info); 241 amdvi_log_event(s, evt); 242 pci_word_test_and_set_mask(s->pci.dev.config + PCI_STATUS, 243 PCI_STATUS_SIG_TARGET_ABORT); 244 } 245 /* 246 * log a master abort accessing device table 247 * @devtab : address of device table entry 248 * @info : error flags 249 */ 250 static void amdvi_log_devtab_error(AMDVIState *s, uint16_t devid, 251 hwaddr devtab, uint16_t info) 252 { 253 uint64_t evt[2]; 254 255 info |= AMDVI_EVENT_DEV_TAB_HW_ERROR; 256 257 amdvi_encode_event(evt, devid, devtab, info); 258 amdvi_log_event(s, evt); 259 pci_word_test_and_set_mask(s->pci.dev.config + PCI_STATUS, 260 PCI_STATUS_SIG_TARGET_ABORT); 261 } 262 /* log an event trying to access command buffer 263 * @addr : address that couldn't be accessed 264 */ 265 static void amdvi_log_command_error(AMDVIState *s, hwaddr addr) 266 { 267 uint64_t evt[2]; 268 uint16_t info = AMDVI_EVENT_COMMAND_HW_ERROR; 269 270 amdvi_encode_event(evt, 0, addr, info); 271 amdvi_log_event(s, evt); 272 pci_word_test_and_set_mask(s->pci.dev.config + PCI_STATUS, 273 PCI_STATUS_SIG_TARGET_ABORT); 274 } 275 /* log an illegal command event 276 * @addr : address of illegal command 277 */ 278 static void amdvi_log_illegalcom_error(AMDVIState *s, uint16_t info, 279 hwaddr addr) 280 { 281 uint64_t evt[2]; 282 283 info |= AMDVI_EVENT_ILLEGAL_COMMAND_ERROR; 284 amdvi_encode_event(evt, 0, addr, info); 285 amdvi_log_event(s, evt); 286 } 287 /* log an error accessing device table 288 * 289 * @devid : device owning the table entry 290 * @devtab : address of device table entry 291 * @info : error flags 292 */ 293 static void amdvi_log_illegaldevtab_error(AMDVIState *s, uint16_t devid, 294 hwaddr addr, uint16_t info) 295 { 296 uint64_t evt[2]; 297 298 info |= AMDVI_EVENT_ILLEGAL_DEVTAB_ENTRY; 299 amdvi_encode_event(evt, devid, addr, info); 300 amdvi_log_event(s, evt); 301 } 302 /* log an error accessing a PTE entry 303 * @addr : address that couldn't be accessed 304 */ 305 static void amdvi_log_pagetab_error(AMDVIState *s, uint16_t devid, 306 hwaddr addr, uint16_t info) 307 { 308 uint64_t evt[2]; 309 310 info |= AMDVI_EVENT_PAGE_TAB_HW_ERROR; 311 amdvi_encode_event(evt, devid, addr, info); 312 amdvi_log_event(s, evt); 313 pci_word_test_and_set_mask(s->pci.dev.config + PCI_STATUS, 314 PCI_STATUS_SIG_TARGET_ABORT); 315 } 316 317 static gboolean amdvi_uint64_equal(gconstpointer v1, gconstpointer v2) 318 { 319 return *((const uint64_t *)v1) == *((const uint64_t *)v2); 320 } 321 322 static guint amdvi_uint64_hash(gconstpointer v) 323 { 324 return (guint)*(const uint64_t *)v; 325 } 326 327 static AMDVIIOTLBEntry *amdvi_iotlb_lookup(AMDVIState *s, hwaddr addr, 328 uint64_t devid) 329 { 330 uint64_t key = (addr >> AMDVI_PAGE_SHIFT_4K) | 331 ((uint64_t)(devid) << AMDVI_DEVID_SHIFT); 332 return g_hash_table_lookup(s->iotlb, &key); 333 } 334 335 static void amdvi_iotlb_reset(AMDVIState *s) 336 { 337 assert(s->iotlb); 338 trace_amdvi_iotlb_reset(); 339 g_hash_table_remove_all(s->iotlb); 340 } 341 342 static gboolean amdvi_iotlb_remove_by_devid(gpointer key, gpointer value, 343 gpointer user_data) 344 { 345 AMDVIIOTLBEntry *entry = (AMDVIIOTLBEntry *)value; 346 uint16_t devid = *(uint16_t *)user_data; 347 return entry->devid == devid; 348 } 349 350 static void amdvi_iotlb_remove_page(AMDVIState *s, hwaddr addr, 351 uint64_t devid) 352 { 353 uint64_t key = (addr >> AMDVI_PAGE_SHIFT_4K) | 354 ((uint64_t)(devid) << AMDVI_DEVID_SHIFT); 355 g_hash_table_remove(s->iotlb, &key); 356 } 357 358 static void amdvi_update_iotlb(AMDVIState *s, uint16_t devid, 359 uint64_t gpa, IOMMUTLBEntry to_cache, 360 uint16_t domid) 361 { 362 /* don't cache erroneous translations */ 363 if (to_cache.perm != IOMMU_NONE) { 364 AMDVIIOTLBEntry *entry = g_new(AMDVIIOTLBEntry, 1); 365 uint64_t *key = g_new(uint64_t, 1); 366 uint64_t gfn = gpa >> AMDVI_PAGE_SHIFT_4K; 367 368 trace_amdvi_cache_update(domid, PCI_BUS_NUM(devid), PCI_SLOT(devid), 369 PCI_FUNC(devid), gpa, to_cache.translated_addr); 370 371 if (g_hash_table_size(s->iotlb) >= AMDVI_IOTLB_MAX_SIZE) { 372 amdvi_iotlb_reset(s); 373 } 374 375 entry->domid = domid; 376 entry->perms = to_cache.perm; 377 entry->translated_addr = to_cache.translated_addr; 378 entry->page_mask = to_cache.addr_mask; 379 *key = gfn | ((uint64_t)(devid) << AMDVI_DEVID_SHIFT); 380 g_hash_table_replace(s->iotlb, key, entry); 381 } 382 } 383 384 static void amdvi_completion_wait(AMDVIState *s, uint64_t *cmd) 385 { 386 /* pad the last 3 bits */ 387 hwaddr addr = cpu_to_le64(extract64(cmd[0], 3, 49)) << 3; 388 uint64_t data = cpu_to_le64(cmd[1]); 389 390 if (extract64(cmd[0], 52, 8)) { 391 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 392 s->cmdbuf + s->cmdbuf_head); 393 } 394 if (extract64(cmd[0], 0, 1)) { 395 if (dma_memory_write(&address_space_memory, addr, &data, 396 AMDVI_COMPLETION_DATA_SIZE, 397 MEMTXATTRS_UNSPECIFIED)) { 398 trace_amdvi_completion_wait_fail(addr); 399 } 400 } 401 /* set completion interrupt */ 402 if (extract64(cmd[0], 1, 1)) { 403 amdvi_assign_orq(s, AMDVI_MMIO_STATUS, AMDVI_MMIO_STATUS_COMP_INT); 404 /* generate interrupt */ 405 amdvi_generate_msi_interrupt(s); 406 } 407 trace_amdvi_completion_wait(addr, data); 408 } 409 410 /* log error without aborting since linux seems to be using reserved bits */ 411 static void amdvi_inval_devtab_entry(AMDVIState *s, uint64_t *cmd) 412 { 413 uint16_t devid = cpu_to_le16((uint16_t)extract64(cmd[0], 0, 16)); 414 415 /* This command should invalidate internal caches of which there isn't */ 416 if (extract64(cmd[0], 16, 44) || cmd[1]) { 417 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 418 s->cmdbuf + s->cmdbuf_head); 419 } 420 trace_amdvi_devtab_inval(PCI_BUS_NUM(devid), PCI_SLOT(devid), 421 PCI_FUNC(devid)); 422 } 423 424 static void amdvi_complete_ppr(AMDVIState *s, uint64_t *cmd) 425 { 426 if (extract64(cmd[0], 16, 16) || extract64(cmd[0], 52, 8) || 427 extract64(cmd[1], 0, 2) || extract64(cmd[1], 3, 29) 428 || extract64(cmd[1], 48, 16)) { 429 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 430 s->cmdbuf + s->cmdbuf_head); 431 } 432 trace_amdvi_ppr_exec(); 433 } 434 435 static void amdvi_intremap_inval_notify_all(AMDVIState *s, bool global, 436 uint32_t index, uint32_t mask) 437 { 438 x86_iommu_iec_notify_all(X86_IOMMU_DEVICE(s), global, index, mask); 439 } 440 441 static void amdvi_inval_all(AMDVIState *s, uint64_t *cmd) 442 { 443 if (extract64(cmd[0], 0, 60) || cmd[1]) { 444 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 445 s->cmdbuf + s->cmdbuf_head); 446 } 447 448 /* Notify global invalidation */ 449 amdvi_intremap_inval_notify_all(s, true, 0, 0); 450 451 amdvi_iotlb_reset(s); 452 trace_amdvi_all_inval(); 453 } 454 455 static gboolean amdvi_iotlb_remove_by_domid(gpointer key, gpointer value, 456 gpointer user_data) 457 { 458 AMDVIIOTLBEntry *entry = (AMDVIIOTLBEntry *)value; 459 uint16_t domid = *(uint16_t *)user_data; 460 return entry->domid == domid; 461 } 462 463 /* we don't have devid - we can't remove pages by address */ 464 static void amdvi_inval_pages(AMDVIState *s, uint64_t *cmd) 465 { 466 uint16_t domid = cpu_to_le16((uint16_t)extract64(cmd[0], 32, 16)); 467 468 if (extract64(cmd[0], 20, 12) || extract64(cmd[0], 48, 12) || 469 extract64(cmd[1], 3, 9)) { 470 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 471 s->cmdbuf + s->cmdbuf_head); 472 } 473 474 g_hash_table_foreach_remove(s->iotlb, amdvi_iotlb_remove_by_domid, 475 &domid); 476 trace_amdvi_pages_inval(domid); 477 } 478 479 static void amdvi_prefetch_pages(AMDVIState *s, uint64_t *cmd) 480 { 481 if (extract64(cmd[0], 16, 8) || extract64(cmd[0], 52, 8) || 482 extract64(cmd[1], 1, 1) || extract64(cmd[1], 3, 1) || 483 extract64(cmd[1], 5, 7)) { 484 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 485 s->cmdbuf + s->cmdbuf_head); 486 } 487 488 trace_amdvi_prefetch_pages(); 489 } 490 491 static void amdvi_inval_inttable(AMDVIState *s, uint64_t *cmd) 492 { 493 if (extract64(cmd[0], 16, 44) || cmd[1]) { 494 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 495 s->cmdbuf + s->cmdbuf_head); 496 return; 497 } 498 499 /* Notify global invalidation */ 500 amdvi_intremap_inval_notify_all(s, true, 0, 0); 501 502 trace_amdvi_intr_inval(); 503 } 504 505 /* FIXME: Try to work with the specified size instead of all the pages 506 * when the S bit is on 507 */ 508 static void iommu_inval_iotlb(AMDVIState *s, uint64_t *cmd) 509 { 510 511 uint16_t devid = extract64(cmd[0], 0, 16); 512 if (extract64(cmd[1], 1, 1) || extract64(cmd[1], 3, 1) || 513 extract64(cmd[1], 6, 6)) { 514 amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4), 515 s->cmdbuf + s->cmdbuf_head); 516 return; 517 } 518 519 if (extract64(cmd[1], 0, 1)) { 520 g_hash_table_foreach_remove(s->iotlb, amdvi_iotlb_remove_by_devid, 521 &devid); 522 } else { 523 amdvi_iotlb_remove_page(s, cpu_to_le64(extract64(cmd[1], 12, 52)) << 12, 524 cpu_to_le16(extract64(cmd[1], 0, 16))); 525 } 526 trace_amdvi_iotlb_inval(); 527 } 528 529 /* not honouring reserved bits is regarded as an illegal command */ 530 static void amdvi_cmdbuf_exec(AMDVIState *s) 531 { 532 uint64_t cmd[2]; 533 534 if (dma_memory_read(&address_space_memory, s->cmdbuf + s->cmdbuf_head, 535 cmd, AMDVI_COMMAND_SIZE, MEMTXATTRS_UNSPECIFIED)) { 536 trace_amdvi_command_read_fail(s->cmdbuf, s->cmdbuf_head); 537 amdvi_log_command_error(s, s->cmdbuf + s->cmdbuf_head); 538 return; 539 } 540 541 switch (extract64(cmd[0], 60, 4)) { 542 case AMDVI_CMD_COMPLETION_WAIT: 543 amdvi_completion_wait(s, cmd); 544 break; 545 case AMDVI_CMD_INVAL_DEVTAB_ENTRY: 546 amdvi_inval_devtab_entry(s, cmd); 547 break; 548 case AMDVI_CMD_INVAL_AMDVI_PAGES: 549 amdvi_inval_pages(s, cmd); 550 break; 551 case AMDVI_CMD_INVAL_IOTLB_PAGES: 552 iommu_inval_iotlb(s, cmd); 553 break; 554 case AMDVI_CMD_INVAL_INTR_TABLE: 555 amdvi_inval_inttable(s, cmd); 556 break; 557 case AMDVI_CMD_PREFETCH_AMDVI_PAGES: 558 amdvi_prefetch_pages(s, cmd); 559 break; 560 case AMDVI_CMD_COMPLETE_PPR_REQUEST: 561 amdvi_complete_ppr(s, cmd); 562 break; 563 case AMDVI_CMD_INVAL_AMDVI_ALL: 564 amdvi_inval_all(s, cmd); 565 break; 566 default: 567 trace_amdvi_unhandled_command(extract64(cmd[1], 60, 4)); 568 /* log illegal command */ 569 amdvi_log_illegalcom_error(s, extract64(cmd[1], 60, 4), 570 s->cmdbuf + s->cmdbuf_head); 571 } 572 } 573 574 static void amdvi_cmdbuf_run(AMDVIState *s) 575 { 576 if (!s->cmdbuf_enabled) { 577 trace_amdvi_command_error(amdvi_readq(s, AMDVI_MMIO_CONTROL)); 578 return; 579 } 580 581 /* check if there is work to do. */ 582 while (s->cmdbuf_head != s->cmdbuf_tail) { 583 trace_amdvi_command_exec(s->cmdbuf_head, s->cmdbuf_tail, s->cmdbuf); 584 amdvi_cmdbuf_exec(s); 585 s->cmdbuf_head += AMDVI_COMMAND_SIZE; 586 amdvi_writeq_raw(s, AMDVI_MMIO_COMMAND_HEAD, s->cmdbuf_head); 587 588 /* wrap head pointer */ 589 if (s->cmdbuf_head >= s->cmdbuf_len * AMDVI_COMMAND_SIZE) { 590 s->cmdbuf_head = 0; 591 } 592 } 593 } 594 595 static void amdvi_mmio_trace(hwaddr addr, unsigned size) 596 { 597 uint8_t index = (addr & ~0x2000) / 8; 598 599 if ((addr & 0x2000)) { 600 /* high table */ 601 index = index >= AMDVI_MMIO_REGS_HIGH ? AMDVI_MMIO_REGS_HIGH : index; 602 trace_amdvi_mmio_read(amdvi_mmio_high[index], addr, size, addr & ~0x07); 603 } else { 604 index = index >= AMDVI_MMIO_REGS_LOW ? AMDVI_MMIO_REGS_LOW : index; 605 trace_amdvi_mmio_read(amdvi_mmio_low[index], addr, size, addr & ~0x07); 606 } 607 } 608 609 static uint64_t amdvi_mmio_read(void *opaque, hwaddr addr, unsigned size) 610 { 611 AMDVIState *s = opaque; 612 613 uint64_t val = -1; 614 if (addr + size > AMDVI_MMIO_SIZE) { 615 trace_amdvi_mmio_read_invalid(AMDVI_MMIO_SIZE, addr, size); 616 return (uint64_t)-1; 617 } 618 619 if (size == 2) { 620 val = amdvi_readw(s, addr); 621 } else if (size == 4) { 622 val = amdvi_readl(s, addr); 623 } else if (size == 8) { 624 val = amdvi_readq(s, addr); 625 } 626 amdvi_mmio_trace(addr, size); 627 628 return val; 629 } 630 631 static void amdvi_handle_control_write(AMDVIState *s) 632 { 633 unsigned long control = amdvi_readq(s, AMDVI_MMIO_CONTROL); 634 s->enabled = !!(control & AMDVI_MMIO_CONTROL_AMDVIEN); 635 636 s->ats_enabled = !!(control & AMDVI_MMIO_CONTROL_HTTUNEN); 637 s->evtlog_enabled = s->enabled && !!(control & 638 AMDVI_MMIO_CONTROL_EVENTLOGEN); 639 640 s->evtlog_intr = !!(control & AMDVI_MMIO_CONTROL_EVENTINTEN); 641 s->completion_wait_intr = !!(control & AMDVI_MMIO_CONTROL_COMWAITINTEN); 642 s->cmdbuf_enabled = s->enabled && !!(control & 643 AMDVI_MMIO_CONTROL_CMDBUFLEN); 644 s->ga_enabled = !!(control & AMDVI_MMIO_CONTROL_GAEN); 645 646 /* update the flags depending on the control register */ 647 if (s->cmdbuf_enabled) { 648 amdvi_assign_orq(s, AMDVI_MMIO_STATUS, AMDVI_MMIO_STATUS_CMDBUF_RUN); 649 } else { 650 amdvi_assign_andq(s, AMDVI_MMIO_STATUS, ~AMDVI_MMIO_STATUS_CMDBUF_RUN); 651 } 652 if (s->evtlog_enabled) { 653 amdvi_assign_orq(s, AMDVI_MMIO_STATUS, AMDVI_MMIO_STATUS_EVT_RUN); 654 } else { 655 amdvi_assign_andq(s, AMDVI_MMIO_STATUS, ~AMDVI_MMIO_STATUS_EVT_RUN); 656 } 657 658 trace_amdvi_control_status(control); 659 amdvi_cmdbuf_run(s); 660 } 661 662 static inline void amdvi_handle_devtab_write(AMDVIState *s) 663 664 { 665 uint64_t val = amdvi_readq(s, AMDVI_MMIO_DEVICE_TABLE); 666 s->devtab = (val & AMDVI_MMIO_DEVTAB_BASE_MASK); 667 668 /* set device table length */ 669 s->devtab_len = ((val & AMDVI_MMIO_DEVTAB_SIZE_MASK) + 1 * 670 (AMDVI_MMIO_DEVTAB_SIZE_UNIT / 671 AMDVI_MMIO_DEVTAB_ENTRY_SIZE)); 672 } 673 674 static inline void amdvi_handle_cmdhead_write(AMDVIState *s) 675 { 676 s->cmdbuf_head = amdvi_readq(s, AMDVI_MMIO_COMMAND_HEAD) 677 & AMDVI_MMIO_CMDBUF_HEAD_MASK; 678 amdvi_cmdbuf_run(s); 679 } 680 681 static inline void amdvi_handle_cmdbase_write(AMDVIState *s) 682 { 683 s->cmdbuf = amdvi_readq(s, AMDVI_MMIO_COMMAND_BASE) 684 & AMDVI_MMIO_CMDBUF_BASE_MASK; 685 s->cmdbuf_len = 1UL << (amdvi_readq(s, AMDVI_MMIO_CMDBUF_SIZE_BYTE) 686 & AMDVI_MMIO_CMDBUF_SIZE_MASK); 687 s->cmdbuf_head = s->cmdbuf_tail = 0; 688 } 689 690 static inline void amdvi_handle_cmdtail_write(AMDVIState *s) 691 { 692 s->cmdbuf_tail = amdvi_readq(s, AMDVI_MMIO_COMMAND_TAIL) 693 & AMDVI_MMIO_CMDBUF_TAIL_MASK; 694 amdvi_cmdbuf_run(s); 695 } 696 697 static inline void amdvi_handle_excllim_write(AMDVIState *s) 698 { 699 uint64_t val = amdvi_readq(s, AMDVI_MMIO_EXCL_LIMIT); 700 s->excl_limit = (val & AMDVI_MMIO_EXCL_LIMIT_MASK) | 701 AMDVI_MMIO_EXCL_LIMIT_LOW; 702 } 703 704 static inline void amdvi_handle_evtbase_write(AMDVIState *s) 705 { 706 uint64_t val = amdvi_readq(s, AMDVI_MMIO_EVENT_BASE); 707 s->evtlog = val & AMDVI_MMIO_EVTLOG_BASE_MASK; 708 s->evtlog_len = 1UL << (amdvi_readq(s, AMDVI_MMIO_EVTLOG_SIZE_BYTE) 709 & AMDVI_MMIO_EVTLOG_SIZE_MASK); 710 } 711 712 static inline void amdvi_handle_evttail_write(AMDVIState *s) 713 { 714 uint64_t val = amdvi_readq(s, AMDVI_MMIO_EVENT_TAIL); 715 s->evtlog_tail = val & AMDVI_MMIO_EVTLOG_TAIL_MASK; 716 } 717 718 static inline void amdvi_handle_evthead_write(AMDVIState *s) 719 { 720 uint64_t val = amdvi_readq(s, AMDVI_MMIO_EVENT_HEAD); 721 s->evtlog_head = val & AMDVI_MMIO_EVTLOG_HEAD_MASK; 722 } 723 724 static inline void amdvi_handle_pprbase_write(AMDVIState *s) 725 { 726 uint64_t val = amdvi_readq(s, AMDVI_MMIO_PPR_BASE); 727 s->ppr_log = val & AMDVI_MMIO_PPRLOG_BASE_MASK; 728 s->pprlog_len = 1UL << (amdvi_readq(s, AMDVI_MMIO_PPRLOG_SIZE_BYTE) 729 & AMDVI_MMIO_PPRLOG_SIZE_MASK); 730 } 731 732 static inline void amdvi_handle_pprhead_write(AMDVIState *s) 733 { 734 uint64_t val = amdvi_readq(s, AMDVI_MMIO_PPR_HEAD); 735 s->pprlog_head = val & AMDVI_MMIO_PPRLOG_HEAD_MASK; 736 } 737 738 static inline void amdvi_handle_pprtail_write(AMDVIState *s) 739 { 740 uint64_t val = amdvi_readq(s, AMDVI_MMIO_PPR_TAIL); 741 s->pprlog_tail = val & AMDVI_MMIO_PPRLOG_TAIL_MASK; 742 } 743 744 /* FIXME: something might go wrong if System Software writes in chunks 745 * of one byte but linux writes in chunks of 4 bytes so currently it 746 * works correctly with linux but will definitely be busted if software 747 * reads/writes 8 bytes 748 */ 749 static void amdvi_mmio_reg_write(AMDVIState *s, unsigned size, uint64_t val, 750 hwaddr addr) 751 { 752 if (size == 2) { 753 amdvi_writew(s, addr, val); 754 } else if (size == 4) { 755 amdvi_writel(s, addr, val); 756 } else if (size == 8) { 757 amdvi_writeq(s, addr, val); 758 } 759 } 760 761 static void amdvi_mmio_write(void *opaque, hwaddr addr, uint64_t val, 762 unsigned size) 763 { 764 AMDVIState *s = opaque; 765 unsigned long offset = addr & 0x07; 766 767 if (addr + size > AMDVI_MMIO_SIZE) { 768 trace_amdvi_mmio_write("error: addr outside region: max ", 769 (uint64_t)AMDVI_MMIO_SIZE, size, val, offset); 770 return; 771 } 772 773 amdvi_mmio_trace(addr, size); 774 switch (addr & ~0x07) { 775 case AMDVI_MMIO_CONTROL: 776 amdvi_mmio_reg_write(s, size, val, addr); 777 amdvi_handle_control_write(s); 778 break; 779 case AMDVI_MMIO_DEVICE_TABLE: 780 amdvi_mmio_reg_write(s, size, val, addr); 781 /* set device table address 782 * This also suffers from inability to tell whether software 783 * is done writing 784 */ 785 if (offset || (size == 8)) { 786 amdvi_handle_devtab_write(s); 787 } 788 break; 789 case AMDVI_MMIO_COMMAND_HEAD: 790 amdvi_mmio_reg_write(s, size, val, addr); 791 amdvi_handle_cmdhead_write(s); 792 break; 793 case AMDVI_MMIO_COMMAND_BASE: 794 amdvi_mmio_reg_write(s, size, val, addr); 795 /* FIXME - make sure System Software has finished writing in case 796 * it writes in chucks less than 8 bytes in a robust way.As for 797 * now, this hacks works for the linux driver 798 */ 799 if (offset || (size == 8)) { 800 amdvi_handle_cmdbase_write(s); 801 } 802 break; 803 case AMDVI_MMIO_COMMAND_TAIL: 804 amdvi_mmio_reg_write(s, size, val, addr); 805 amdvi_handle_cmdtail_write(s); 806 break; 807 case AMDVI_MMIO_EVENT_BASE: 808 amdvi_mmio_reg_write(s, size, val, addr); 809 amdvi_handle_evtbase_write(s); 810 break; 811 case AMDVI_MMIO_EVENT_HEAD: 812 amdvi_mmio_reg_write(s, size, val, addr); 813 amdvi_handle_evthead_write(s); 814 break; 815 case AMDVI_MMIO_EVENT_TAIL: 816 amdvi_mmio_reg_write(s, size, val, addr); 817 amdvi_handle_evttail_write(s); 818 break; 819 case AMDVI_MMIO_EXCL_LIMIT: 820 amdvi_mmio_reg_write(s, size, val, addr); 821 amdvi_handle_excllim_write(s); 822 break; 823 /* PPR log base - unused for now */ 824 case AMDVI_MMIO_PPR_BASE: 825 amdvi_mmio_reg_write(s, size, val, addr); 826 amdvi_handle_pprbase_write(s); 827 break; 828 /* PPR log head - also unused for now */ 829 case AMDVI_MMIO_PPR_HEAD: 830 amdvi_mmio_reg_write(s, size, val, addr); 831 amdvi_handle_pprhead_write(s); 832 break; 833 /* PPR log tail - unused for now */ 834 case AMDVI_MMIO_PPR_TAIL: 835 amdvi_mmio_reg_write(s, size, val, addr); 836 amdvi_handle_pprtail_write(s); 837 break; 838 } 839 } 840 841 static inline uint64_t amdvi_get_perms(uint64_t entry) 842 { 843 return (entry & (AMDVI_DEV_PERM_READ | AMDVI_DEV_PERM_WRITE)) >> 844 AMDVI_DEV_PERM_SHIFT; 845 } 846 847 /* validate that reserved bits are honoured */ 848 static bool amdvi_validate_dte(AMDVIState *s, uint16_t devid, 849 uint64_t *dte) 850 { 851 if ((dte[0] & AMDVI_DTE_LOWER_QUAD_RESERVED) 852 || (dte[1] & AMDVI_DTE_MIDDLE_QUAD_RESERVED) 853 || (dte[2] & AMDVI_DTE_UPPER_QUAD_RESERVED) || dte[3]) { 854 amdvi_log_illegaldevtab_error(s, devid, 855 s->devtab + 856 devid * AMDVI_DEVTAB_ENTRY_SIZE, 0); 857 return false; 858 } 859 860 return true; 861 } 862 863 /* get a device table entry given the devid */ 864 static bool amdvi_get_dte(AMDVIState *s, int devid, uint64_t *entry) 865 { 866 uint32_t offset = devid * AMDVI_DEVTAB_ENTRY_SIZE; 867 868 if (dma_memory_read(&address_space_memory, s->devtab + offset, entry, 869 AMDVI_DEVTAB_ENTRY_SIZE, MEMTXATTRS_UNSPECIFIED)) { 870 trace_amdvi_dte_get_fail(s->devtab, offset); 871 /* log error accessing dte */ 872 amdvi_log_devtab_error(s, devid, s->devtab + offset, 0); 873 return false; 874 } 875 876 *entry = le64_to_cpu(*entry); 877 if (!amdvi_validate_dte(s, devid, entry)) { 878 trace_amdvi_invalid_dte(entry[0]); 879 return false; 880 } 881 882 return true; 883 } 884 885 /* get pte translation mode */ 886 static inline uint8_t get_pte_translation_mode(uint64_t pte) 887 { 888 return (pte >> AMDVI_DEV_MODE_RSHIFT) & AMDVI_DEV_MODE_MASK; 889 } 890 891 static inline uint64_t pte_override_page_mask(uint64_t pte) 892 { 893 uint8_t page_mask = 13; 894 uint64_t addr = (pte & AMDVI_DEV_PT_ROOT_MASK) >> 12; 895 /* find the first zero bit */ 896 while (addr & 1) { 897 page_mask++; 898 addr = addr >> 1; 899 } 900 901 return ~((1ULL << page_mask) - 1); 902 } 903 904 static inline uint64_t pte_get_page_mask(uint64_t oldlevel) 905 { 906 return ~((1UL << ((oldlevel * 9) + 3)) - 1); 907 } 908 909 static inline uint64_t amdvi_get_pte_entry(AMDVIState *s, uint64_t pte_addr, 910 uint16_t devid) 911 { 912 uint64_t pte; 913 914 if (dma_memory_read(&address_space_memory, pte_addr, 915 &pte, sizeof(pte), MEMTXATTRS_UNSPECIFIED)) { 916 trace_amdvi_get_pte_hwerror(pte_addr); 917 amdvi_log_pagetab_error(s, devid, pte_addr, 0); 918 pte = 0; 919 return pte; 920 } 921 922 pte = le64_to_cpu(pte); 923 return pte; 924 } 925 926 static void amdvi_page_walk(AMDVIAddressSpace *as, uint64_t *dte, 927 IOMMUTLBEntry *ret, unsigned perms, 928 hwaddr addr) 929 { 930 unsigned level, present, pte_perms, oldlevel; 931 uint64_t pte = dte[0], pte_addr, page_mask; 932 933 /* make sure the DTE has TV = 1 */ 934 if (pte & AMDVI_DEV_TRANSLATION_VALID) { 935 level = get_pte_translation_mode(pte); 936 if (level >= 7) { 937 trace_amdvi_mode_invalid(level, addr); 938 return; 939 } 940 if (level == 0) { 941 goto no_remap; 942 } 943 944 /* we are at the leaf page table or page table encodes a huge page */ 945 do { 946 pte_perms = amdvi_get_perms(pte); 947 present = pte & 1; 948 if (!present || perms != (perms & pte_perms)) { 949 amdvi_page_fault(as->iommu_state, as->devfn, addr, perms); 950 trace_amdvi_page_fault(addr); 951 return; 952 } 953 954 /* go to the next lower level */ 955 pte_addr = pte & AMDVI_DEV_PT_ROOT_MASK; 956 /* add offset and load pte */ 957 pte_addr += ((addr >> (3 + 9 * level)) & 0x1FF) << 3; 958 pte = amdvi_get_pte_entry(as->iommu_state, pte_addr, as->devfn); 959 if (!pte) { 960 return; 961 } 962 oldlevel = level; 963 level = get_pte_translation_mode(pte); 964 } while (level > 0 && level < 7); 965 966 if (level == 0x7) { 967 page_mask = pte_override_page_mask(pte); 968 } else { 969 page_mask = pte_get_page_mask(oldlevel); 970 } 971 972 /* get access permissions from pte */ 973 ret->iova = addr & page_mask; 974 ret->translated_addr = (pte & AMDVI_DEV_PT_ROOT_MASK) & page_mask; 975 ret->addr_mask = ~page_mask; 976 ret->perm = amdvi_get_perms(pte); 977 return; 978 } 979 no_remap: 980 ret->iova = addr & AMDVI_PAGE_MASK_4K; 981 ret->translated_addr = addr & AMDVI_PAGE_MASK_4K; 982 ret->addr_mask = ~AMDVI_PAGE_MASK_4K; 983 ret->perm = amdvi_get_perms(pte); 984 } 985 986 static void amdvi_do_translate(AMDVIAddressSpace *as, hwaddr addr, 987 bool is_write, IOMMUTLBEntry *ret) 988 { 989 AMDVIState *s = as->iommu_state; 990 uint16_t devid = PCI_BUILD_BDF(as->bus_num, as->devfn); 991 AMDVIIOTLBEntry *iotlb_entry = amdvi_iotlb_lookup(s, addr, devid); 992 uint64_t entry[4]; 993 994 if (iotlb_entry) { 995 trace_amdvi_iotlb_hit(PCI_BUS_NUM(devid), PCI_SLOT(devid), 996 PCI_FUNC(devid), addr, iotlb_entry->translated_addr); 997 ret->iova = addr & ~iotlb_entry->page_mask; 998 ret->translated_addr = iotlb_entry->translated_addr; 999 ret->addr_mask = iotlb_entry->page_mask; 1000 ret->perm = iotlb_entry->perms; 1001 return; 1002 } 1003 1004 if (!amdvi_get_dte(s, devid, entry)) { 1005 return; 1006 } 1007 1008 /* devices with V = 0 are not translated */ 1009 if (!(entry[0] & AMDVI_DEV_VALID)) { 1010 goto out; 1011 } 1012 1013 amdvi_page_walk(as, entry, ret, 1014 is_write ? AMDVI_PERM_WRITE : AMDVI_PERM_READ, addr); 1015 1016 amdvi_update_iotlb(s, devid, addr, *ret, 1017 entry[1] & AMDVI_DEV_DOMID_ID_MASK); 1018 return; 1019 1020 out: 1021 ret->iova = addr & AMDVI_PAGE_MASK_4K; 1022 ret->translated_addr = addr & AMDVI_PAGE_MASK_4K; 1023 ret->addr_mask = ~AMDVI_PAGE_MASK_4K; 1024 ret->perm = IOMMU_RW; 1025 } 1026 1027 static inline bool amdvi_is_interrupt_addr(hwaddr addr) 1028 { 1029 return addr >= AMDVI_INT_ADDR_FIRST && addr <= AMDVI_INT_ADDR_LAST; 1030 } 1031 1032 static IOMMUTLBEntry amdvi_translate(IOMMUMemoryRegion *iommu, hwaddr addr, 1033 IOMMUAccessFlags flag, int iommu_idx) 1034 { 1035 AMDVIAddressSpace *as = container_of(iommu, AMDVIAddressSpace, iommu); 1036 AMDVIState *s = as->iommu_state; 1037 IOMMUTLBEntry ret = { 1038 .target_as = &address_space_memory, 1039 .iova = addr, 1040 .translated_addr = 0, 1041 .addr_mask = ~(hwaddr)0, 1042 .perm = IOMMU_NONE 1043 }; 1044 1045 if (!s->enabled) { 1046 /* AMDVI disabled - corresponds to iommu=off not 1047 * failure to provide any parameter 1048 */ 1049 ret.iova = addr & AMDVI_PAGE_MASK_4K; 1050 ret.translated_addr = addr & AMDVI_PAGE_MASK_4K; 1051 ret.addr_mask = ~AMDVI_PAGE_MASK_4K; 1052 ret.perm = IOMMU_RW; 1053 return ret; 1054 } else if (amdvi_is_interrupt_addr(addr)) { 1055 ret.iova = addr & AMDVI_PAGE_MASK_4K; 1056 ret.translated_addr = addr & AMDVI_PAGE_MASK_4K; 1057 ret.addr_mask = ~AMDVI_PAGE_MASK_4K; 1058 ret.perm = IOMMU_WO; 1059 return ret; 1060 } 1061 1062 amdvi_do_translate(as, addr, flag & IOMMU_WO, &ret); 1063 trace_amdvi_translation_result(as->bus_num, PCI_SLOT(as->devfn), 1064 PCI_FUNC(as->devfn), addr, ret.translated_addr); 1065 return ret; 1066 } 1067 1068 static int amdvi_get_irte(AMDVIState *s, MSIMessage *origin, uint64_t *dte, 1069 union irte *irte, uint16_t devid) 1070 { 1071 uint64_t irte_root, offset; 1072 1073 irte_root = dte[2] & AMDVI_IR_PHYS_ADDR_MASK; 1074 offset = (origin->data & AMDVI_IRTE_OFFSET) << 2; 1075 1076 trace_amdvi_ir_irte(irte_root, offset); 1077 1078 if (dma_memory_read(&address_space_memory, irte_root + offset, 1079 irte, sizeof(*irte), MEMTXATTRS_UNSPECIFIED)) { 1080 trace_amdvi_ir_err("failed to get irte"); 1081 return -AMDVI_IR_GET_IRTE; 1082 } 1083 1084 trace_amdvi_ir_irte_val(irte->val); 1085 1086 return 0; 1087 } 1088 1089 static int amdvi_int_remap_legacy(AMDVIState *iommu, 1090 MSIMessage *origin, 1091 MSIMessage *translated, 1092 uint64_t *dte, 1093 X86IOMMUIrq *irq, 1094 uint16_t sid) 1095 { 1096 int ret; 1097 union irte irte; 1098 1099 /* get interrupt remapping table */ 1100 ret = amdvi_get_irte(iommu, origin, dte, &irte, sid); 1101 if (ret < 0) { 1102 return ret; 1103 } 1104 1105 if (!irte.fields.valid) { 1106 trace_amdvi_ir_target_abort("RemapEn is disabled"); 1107 return -AMDVI_IR_TARGET_ABORT; 1108 } 1109 1110 if (irte.fields.guest_mode) { 1111 error_report_once("guest mode is not zero"); 1112 return -AMDVI_IR_ERR; 1113 } 1114 1115 if (irte.fields.int_type > AMDVI_IOAPIC_INT_TYPE_ARBITRATED) { 1116 error_report_once("reserved int_type"); 1117 return -AMDVI_IR_ERR; 1118 } 1119 1120 irq->delivery_mode = irte.fields.int_type; 1121 irq->vector = irte.fields.vector; 1122 irq->dest_mode = irte.fields.dm; 1123 irq->redir_hint = irte.fields.rq_eoi; 1124 irq->dest = irte.fields.destination; 1125 1126 return 0; 1127 } 1128 1129 static int amdvi_get_irte_ga(AMDVIState *s, MSIMessage *origin, uint64_t *dte, 1130 struct irte_ga *irte, uint16_t devid) 1131 { 1132 uint64_t irte_root, offset; 1133 1134 irte_root = dte[2] & AMDVI_IR_PHYS_ADDR_MASK; 1135 offset = (origin->data & AMDVI_IRTE_OFFSET) << 4; 1136 trace_amdvi_ir_irte(irte_root, offset); 1137 1138 if (dma_memory_read(&address_space_memory, irte_root + offset, 1139 irte, sizeof(*irte), MEMTXATTRS_UNSPECIFIED)) { 1140 trace_amdvi_ir_err("failed to get irte_ga"); 1141 return -AMDVI_IR_GET_IRTE; 1142 } 1143 1144 trace_amdvi_ir_irte_ga_val(irte->hi.val, irte->lo.val); 1145 return 0; 1146 } 1147 1148 static int amdvi_int_remap_ga(AMDVIState *iommu, 1149 MSIMessage *origin, 1150 MSIMessage *translated, 1151 uint64_t *dte, 1152 X86IOMMUIrq *irq, 1153 uint16_t sid) 1154 { 1155 int ret; 1156 struct irte_ga irte; 1157 1158 /* get interrupt remapping table */ 1159 ret = amdvi_get_irte_ga(iommu, origin, dte, &irte, sid); 1160 if (ret < 0) { 1161 return ret; 1162 } 1163 1164 if (!irte.lo.fields_remap.valid) { 1165 trace_amdvi_ir_target_abort("RemapEn is disabled"); 1166 return -AMDVI_IR_TARGET_ABORT; 1167 } 1168 1169 if (irte.lo.fields_remap.guest_mode) { 1170 error_report_once("guest mode is not zero"); 1171 return -AMDVI_IR_ERR; 1172 } 1173 1174 if (irte.lo.fields_remap.int_type > AMDVI_IOAPIC_INT_TYPE_ARBITRATED) { 1175 error_report_once("reserved int_type is set"); 1176 return -AMDVI_IR_ERR; 1177 } 1178 1179 irq->delivery_mode = irte.lo.fields_remap.int_type; 1180 irq->vector = irte.hi.fields.vector; 1181 irq->dest_mode = irte.lo.fields_remap.dm; 1182 irq->redir_hint = irte.lo.fields_remap.rq_eoi; 1183 if (iommu->xtsup) { 1184 irq->dest = irte.lo.fields_remap.destination | 1185 (irte.hi.fields.destination_hi << 24); 1186 } else { 1187 irq->dest = irte.lo.fields_remap.destination & 0xff; 1188 } 1189 1190 return 0; 1191 } 1192 1193 static int __amdvi_int_remap_msi(AMDVIState *iommu, 1194 MSIMessage *origin, 1195 MSIMessage *translated, 1196 uint64_t *dte, 1197 X86IOMMUIrq *irq, 1198 uint16_t sid) 1199 { 1200 int ret; 1201 uint8_t int_ctl; 1202 1203 int_ctl = (dte[2] >> AMDVI_IR_INTCTL_SHIFT) & 3; 1204 trace_amdvi_ir_intctl(int_ctl); 1205 1206 switch (int_ctl) { 1207 case AMDVI_IR_INTCTL_PASS: 1208 memcpy(translated, origin, sizeof(*origin)); 1209 return 0; 1210 case AMDVI_IR_INTCTL_REMAP: 1211 break; 1212 case AMDVI_IR_INTCTL_ABORT: 1213 trace_amdvi_ir_target_abort("int_ctl abort"); 1214 return -AMDVI_IR_TARGET_ABORT; 1215 default: 1216 trace_amdvi_ir_err("int_ctl reserved"); 1217 return -AMDVI_IR_ERR; 1218 } 1219 1220 if (iommu->ga_enabled) { 1221 ret = amdvi_int_remap_ga(iommu, origin, translated, dte, irq, sid); 1222 } else { 1223 ret = amdvi_int_remap_legacy(iommu, origin, translated, dte, irq, sid); 1224 } 1225 1226 return ret; 1227 } 1228 1229 /* Interrupt remapping for MSI/MSI-X entry */ 1230 static int amdvi_int_remap_msi(AMDVIState *iommu, 1231 MSIMessage *origin, 1232 MSIMessage *translated, 1233 uint16_t sid) 1234 { 1235 int ret = 0; 1236 uint64_t pass = 0; 1237 uint64_t dte[4] = { 0 }; 1238 X86IOMMUIrq irq = { 0 }; 1239 uint8_t dest_mode, delivery_mode; 1240 1241 assert(origin && translated); 1242 1243 /* 1244 * When IOMMU is enabled, interrupt remap request will come either from 1245 * IO-APIC or PCI device. If interrupt is from PCI device then it will 1246 * have a valid requester id but if the interrupt is from IO-APIC 1247 * then requester id will be invalid. 1248 */ 1249 if (sid == X86_IOMMU_SID_INVALID) { 1250 sid = AMDVI_IOAPIC_SB_DEVID; 1251 } 1252 1253 trace_amdvi_ir_remap_msi_req(origin->address, origin->data, sid); 1254 1255 /* check if device table entry is set before we go further. */ 1256 if (!iommu || !iommu->devtab_len) { 1257 memcpy(translated, origin, sizeof(*origin)); 1258 goto out; 1259 } 1260 1261 if (!amdvi_get_dte(iommu, sid, dte)) { 1262 return -AMDVI_IR_ERR; 1263 } 1264 1265 /* Check if IR is enabled in DTE */ 1266 if (!(dte[2] & AMDVI_IR_REMAP_ENABLE)) { 1267 memcpy(translated, origin, sizeof(*origin)); 1268 goto out; 1269 } 1270 1271 /* validate that we are configure with intremap=on */ 1272 if (!x86_iommu_ir_supported(X86_IOMMU_DEVICE(iommu))) { 1273 trace_amdvi_err("Interrupt remapping is enabled in the guest but " 1274 "not in the host. Use intremap=on to enable interrupt " 1275 "remapping in amd-iommu."); 1276 return -AMDVI_IR_ERR; 1277 } 1278 1279 if (origin->address < AMDVI_INT_ADDR_FIRST || 1280 origin->address + sizeof(origin->data) > AMDVI_INT_ADDR_LAST + 1) { 1281 trace_amdvi_err("MSI is not from IOAPIC."); 1282 return -AMDVI_IR_ERR; 1283 } 1284 1285 /* 1286 * The MSI data register [10:8] are used to get the upstream interrupt type. 1287 * 1288 * See MSI/MSI-X format: 1289 * https://pdfs.semanticscholar.org/presentation/9420/c279e942eca568157711ef5c92b800c40a79.pdf 1290 * (page 5) 1291 */ 1292 delivery_mode = (origin->data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 7; 1293 1294 switch (delivery_mode) { 1295 case AMDVI_IOAPIC_INT_TYPE_FIXED: 1296 case AMDVI_IOAPIC_INT_TYPE_ARBITRATED: 1297 trace_amdvi_ir_delivery_mode("fixed/arbitrated"); 1298 ret = __amdvi_int_remap_msi(iommu, origin, translated, dte, &irq, sid); 1299 if (ret < 0) { 1300 goto remap_fail; 1301 } else { 1302 /* Translate IRQ to MSI messages */ 1303 x86_iommu_irq_to_msi_message(&irq, translated); 1304 goto out; 1305 } 1306 break; 1307 case AMDVI_IOAPIC_INT_TYPE_SMI: 1308 error_report("SMI is not supported!"); 1309 ret = -AMDVI_IR_ERR; 1310 break; 1311 case AMDVI_IOAPIC_INT_TYPE_NMI: 1312 pass = dte[3] & AMDVI_DEV_NMI_PASS_MASK; 1313 trace_amdvi_ir_delivery_mode("nmi"); 1314 break; 1315 case AMDVI_IOAPIC_INT_TYPE_INIT: 1316 pass = dte[3] & AMDVI_DEV_INT_PASS_MASK; 1317 trace_amdvi_ir_delivery_mode("init"); 1318 break; 1319 case AMDVI_IOAPIC_INT_TYPE_EINT: 1320 pass = dte[3] & AMDVI_DEV_EINT_PASS_MASK; 1321 trace_amdvi_ir_delivery_mode("eint"); 1322 break; 1323 default: 1324 trace_amdvi_ir_delivery_mode("unsupported delivery_mode"); 1325 ret = -AMDVI_IR_ERR; 1326 break; 1327 } 1328 1329 if (ret < 0) { 1330 goto remap_fail; 1331 } 1332 1333 /* 1334 * The MSI address register bit[2] is used to get the destination 1335 * mode. The dest_mode 1 is valid for fixed and arbitrated interrupts 1336 * only. 1337 */ 1338 dest_mode = (origin->address >> MSI_ADDR_DEST_MODE_SHIFT) & 1; 1339 if (dest_mode) { 1340 trace_amdvi_ir_err("invalid dest_mode"); 1341 ret = -AMDVI_IR_ERR; 1342 goto remap_fail; 1343 } 1344 1345 if (pass) { 1346 memcpy(translated, origin, sizeof(*origin)); 1347 } else { 1348 trace_amdvi_ir_err("passthrough is not enabled"); 1349 ret = -AMDVI_IR_ERR; 1350 goto remap_fail; 1351 } 1352 1353 out: 1354 trace_amdvi_ir_remap_msi(origin->address, origin->data, 1355 translated->address, translated->data); 1356 return 0; 1357 1358 remap_fail: 1359 return ret; 1360 } 1361 1362 static int amdvi_int_remap(X86IOMMUState *iommu, 1363 MSIMessage *origin, 1364 MSIMessage *translated, 1365 uint16_t sid) 1366 { 1367 return amdvi_int_remap_msi(AMD_IOMMU_DEVICE(iommu), origin, 1368 translated, sid); 1369 } 1370 1371 static MemTxResult amdvi_mem_ir_write(void *opaque, hwaddr addr, 1372 uint64_t value, unsigned size, 1373 MemTxAttrs attrs) 1374 { 1375 int ret; 1376 MSIMessage from = { 0, 0 }, to = { 0, 0 }; 1377 uint16_t sid = AMDVI_IOAPIC_SB_DEVID; 1378 1379 from.address = (uint64_t) addr + AMDVI_INT_ADDR_FIRST; 1380 from.data = (uint32_t) value; 1381 1382 trace_amdvi_mem_ir_write_req(addr, value, size); 1383 1384 if (!attrs.unspecified) { 1385 /* We have explicit Source ID */ 1386 sid = attrs.requester_id; 1387 } 1388 1389 ret = amdvi_int_remap_msi(opaque, &from, &to, sid); 1390 if (ret < 0) { 1391 /* TODO: log the event using IOMMU log event interface */ 1392 error_report_once("failed to remap interrupt from devid 0x%x", sid); 1393 return MEMTX_ERROR; 1394 } 1395 1396 apic_get_class(NULL)->send_msi(&to); 1397 1398 trace_amdvi_mem_ir_write(to.address, to.data); 1399 return MEMTX_OK; 1400 } 1401 1402 static MemTxResult amdvi_mem_ir_read(void *opaque, hwaddr addr, 1403 uint64_t *data, unsigned size, 1404 MemTxAttrs attrs) 1405 { 1406 return MEMTX_OK; 1407 } 1408 1409 static const MemoryRegionOps amdvi_ir_ops = { 1410 .read_with_attrs = amdvi_mem_ir_read, 1411 .write_with_attrs = amdvi_mem_ir_write, 1412 .endianness = DEVICE_LITTLE_ENDIAN, 1413 .impl = { 1414 .min_access_size = 4, 1415 .max_access_size = 4, 1416 }, 1417 .valid = { 1418 .min_access_size = 4, 1419 .max_access_size = 4, 1420 } 1421 }; 1422 1423 static AddressSpace *amdvi_host_dma_iommu(PCIBus *bus, void *opaque, int devfn) 1424 { 1425 char name[128]; 1426 AMDVIState *s = opaque; 1427 AMDVIAddressSpace **iommu_as, *amdvi_dev_as; 1428 int bus_num = pci_bus_num(bus); 1429 X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s); 1430 1431 iommu_as = s->address_spaces[bus_num]; 1432 1433 /* allocate memory during the first run */ 1434 if (!iommu_as) { 1435 iommu_as = g_new0(AMDVIAddressSpace *, PCI_DEVFN_MAX); 1436 s->address_spaces[bus_num] = iommu_as; 1437 } 1438 1439 /* set up AMD-Vi region */ 1440 if (!iommu_as[devfn]) { 1441 snprintf(name, sizeof(name), "amd_iommu_devfn_%d", devfn); 1442 1443 iommu_as[devfn] = g_new0(AMDVIAddressSpace, 1); 1444 iommu_as[devfn]->bus_num = (uint8_t)bus_num; 1445 iommu_as[devfn]->devfn = (uint8_t)devfn; 1446 iommu_as[devfn]->iommu_state = s; 1447 1448 amdvi_dev_as = iommu_as[devfn]; 1449 1450 /* 1451 * Memory region relationships looks like (Address range shows 1452 * only lower 32 bits to make it short in length...): 1453 * 1454 * |--------------------+-------------------+----------| 1455 * | Name | Address range | Priority | 1456 * |--------------------+-------------------+----------+ 1457 * | amdvi-root | 00000000-ffffffff | 0 | 1458 * | amdvi-iommu_nodma | 00000000-ffffffff | 0 | 1459 * | amdvi-iommu_ir | fee00000-feefffff | 1 | 1460 * |--------------------+-------------------+----------| 1461 */ 1462 memory_region_init_iommu(&amdvi_dev_as->iommu, 1463 sizeof(amdvi_dev_as->iommu), 1464 TYPE_AMD_IOMMU_MEMORY_REGION, 1465 OBJECT(s), 1466 "amd_iommu", UINT64_MAX); 1467 memory_region_init(&amdvi_dev_as->root, OBJECT(s), 1468 "amdvi_root", UINT64_MAX); 1469 address_space_init(&amdvi_dev_as->as, &amdvi_dev_as->root, name); 1470 memory_region_add_subregion_overlap(&amdvi_dev_as->root, 0, 1471 MEMORY_REGION(&amdvi_dev_as->iommu), 1472 0); 1473 1474 /* Build the DMA Disabled alias to shared memory */ 1475 memory_region_init_alias(&amdvi_dev_as->iommu_nodma, OBJECT(s), 1476 "amdvi-sys", &s->mr_sys, 0, 1477 memory_region_size(&s->mr_sys)); 1478 memory_region_add_subregion_overlap(&amdvi_dev_as->root, 0, 1479 &amdvi_dev_as->iommu_nodma, 1480 0); 1481 /* Build the Interrupt Remapping alias to shared memory */ 1482 memory_region_init_alias(&amdvi_dev_as->iommu_ir, OBJECT(s), 1483 "amdvi-ir", &s->mr_ir, 0, 1484 memory_region_size(&s->mr_ir)); 1485 memory_region_add_subregion_overlap(MEMORY_REGION(&amdvi_dev_as->iommu), 1486 AMDVI_INT_ADDR_FIRST, 1487 &amdvi_dev_as->iommu_ir, 1); 1488 1489 if (!x86_iommu->pt_supported) { 1490 memory_region_set_enabled(&amdvi_dev_as->iommu_nodma, false); 1491 memory_region_set_enabled(MEMORY_REGION(&amdvi_dev_as->iommu), 1492 true); 1493 } else { 1494 memory_region_set_enabled(MEMORY_REGION(&amdvi_dev_as->iommu), 1495 false); 1496 memory_region_set_enabled(&amdvi_dev_as->iommu_nodma, true); 1497 } 1498 } 1499 return &iommu_as[devfn]->as; 1500 } 1501 1502 static const PCIIOMMUOps amdvi_iommu_ops = { 1503 .get_address_space = amdvi_host_dma_iommu, 1504 }; 1505 1506 static const MemoryRegionOps mmio_mem_ops = { 1507 .read = amdvi_mmio_read, 1508 .write = amdvi_mmio_write, 1509 .endianness = DEVICE_LITTLE_ENDIAN, 1510 .impl = { 1511 .min_access_size = 1, 1512 .max_access_size = 8, 1513 .unaligned = false, 1514 }, 1515 .valid = { 1516 .min_access_size = 1, 1517 .max_access_size = 8, 1518 } 1519 }; 1520 1521 static int amdvi_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu, 1522 IOMMUNotifierFlag old, 1523 IOMMUNotifierFlag new, 1524 Error **errp) 1525 { 1526 AMDVIAddressSpace *as = container_of(iommu, AMDVIAddressSpace, iommu); 1527 1528 if (new & IOMMU_NOTIFIER_MAP) { 1529 error_setg(errp, 1530 "device %02x.%02x.%x requires iommu notifier which is not " 1531 "currently supported", as->bus_num, PCI_SLOT(as->devfn), 1532 PCI_FUNC(as->devfn)); 1533 return -EINVAL; 1534 } 1535 return 0; 1536 } 1537 1538 static void amdvi_init(AMDVIState *s) 1539 { 1540 amdvi_iotlb_reset(s); 1541 1542 s->devtab_len = 0; 1543 s->cmdbuf_len = 0; 1544 s->cmdbuf_head = 0; 1545 s->cmdbuf_tail = 0; 1546 s->evtlog_head = 0; 1547 s->evtlog_tail = 0; 1548 s->excl_enabled = false; 1549 s->excl_allow = false; 1550 s->mmio_enabled = false; 1551 s->enabled = false; 1552 s->ats_enabled = false; 1553 s->cmdbuf_enabled = false; 1554 1555 /* reset MMIO */ 1556 memset(s->mmior, 0, AMDVI_MMIO_SIZE); 1557 amdvi_set_quad(s, AMDVI_MMIO_EXT_FEATURES, 1558 amdvi_extended_feature_register(s), 1559 0xffffffffffffffef, 0); 1560 amdvi_set_quad(s, AMDVI_MMIO_STATUS, 0, 0x98, 0x67); 1561 } 1562 1563 static void amdvi_pci_realize(PCIDevice *pdev, Error **errp) 1564 { 1565 AMDVIPCIState *s = AMD_IOMMU_PCI(pdev); 1566 int ret; 1567 1568 ret = pci_add_capability(pdev, AMDVI_CAPAB_ID_SEC, 0, 1569 AMDVI_CAPAB_SIZE, errp); 1570 if (ret < 0) { 1571 return; 1572 } 1573 s->capab_offset = ret; 1574 1575 ret = pci_add_capability(pdev, PCI_CAP_ID_MSI, 0, 1576 AMDVI_CAPAB_REG_SIZE, errp); 1577 if (ret < 0) { 1578 return; 1579 } 1580 ret = pci_add_capability(pdev, PCI_CAP_ID_HT, 0, 1581 AMDVI_CAPAB_REG_SIZE, errp); 1582 if (ret < 0) { 1583 return; 1584 } 1585 1586 if (msi_init(pdev, 0, 1, true, false, errp) < 0) { 1587 return; 1588 } 1589 1590 /* reset device ident */ 1591 pci_config_set_prog_interface(pdev->config, 0); 1592 1593 /* reset AMDVI specific capabilities, all r/o */ 1594 pci_set_long(pdev->config + s->capab_offset, AMDVI_CAPAB_FEATURES); 1595 pci_set_long(pdev->config + s->capab_offset + AMDVI_CAPAB_BAR_LOW, 1596 AMDVI_BASE_ADDR & ~(0xffff0000)); 1597 pci_set_long(pdev->config + s->capab_offset + AMDVI_CAPAB_BAR_HIGH, 1598 (AMDVI_BASE_ADDR & ~(0xffff)) >> 16); 1599 pci_set_long(pdev->config + s->capab_offset + AMDVI_CAPAB_RANGE, 1600 0xff000000); 1601 pci_set_long(pdev->config + s->capab_offset + AMDVI_CAPAB_MISC, 0); 1602 pci_set_long(pdev->config + s->capab_offset + AMDVI_CAPAB_MISC, 1603 AMDVI_MAX_PH_ADDR | AMDVI_MAX_GVA_ADDR | AMDVI_MAX_VA_ADDR); 1604 } 1605 1606 static void amdvi_sysbus_reset(DeviceState *dev) 1607 { 1608 AMDVIState *s = AMD_IOMMU_DEVICE(dev); 1609 1610 msi_reset(&s->pci.dev); 1611 amdvi_init(s); 1612 } 1613 1614 static void amdvi_sysbus_realize(DeviceState *dev, Error **errp) 1615 { 1616 AMDVIState *s = AMD_IOMMU_DEVICE(dev); 1617 MachineState *ms = MACHINE(qdev_get_machine()); 1618 PCMachineState *pcms = PC_MACHINE(ms); 1619 X86MachineState *x86ms = X86_MACHINE(ms); 1620 PCIBus *bus = pcms->pcibus; 1621 1622 s->iotlb = g_hash_table_new_full(amdvi_uint64_hash, 1623 amdvi_uint64_equal, g_free, g_free); 1624 1625 /* This device should take care of IOMMU PCI properties */ 1626 if (!qdev_realize(DEVICE(&s->pci), &bus->qbus, errp)) { 1627 return; 1628 } 1629 1630 /* Pseudo address space under root PCI bus. */ 1631 x86ms->ioapic_as = amdvi_host_dma_iommu(bus, s, AMDVI_IOAPIC_SB_DEVID); 1632 1633 /* set up MMIO */ 1634 memory_region_init_io(&s->mr_mmio, OBJECT(s), &mmio_mem_ops, s, 1635 "amdvi-mmio", AMDVI_MMIO_SIZE); 1636 memory_region_add_subregion(get_system_memory(), AMDVI_BASE_ADDR, 1637 &s->mr_mmio); 1638 1639 /* Create the share memory regions by all devices */ 1640 memory_region_init(&s->mr_sys, OBJECT(s), "amdvi-sys", UINT64_MAX); 1641 1642 /* set up the DMA disabled memory region */ 1643 memory_region_init_alias(&s->mr_nodma, OBJECT(s), 1644 "amdvi-nodma", get_system_memory(), 0, 1645 memory_region_size(get_system_memory())); 1646 memory_region_add_subregion_overlap(&s->mr_sys, 0, 1647 &s->mr_nodma, 0); 1648 1649 /* set up the Interrupt Remapping memory region */ 1650 memory_region_init_io(&s->mr_ir, OBJECT(s), &amdvi_ir_ops, 1651 s, "amdvi-ir", AMDVI_INT_ADDR_SIZE); 1652 memory_region_add_subregion_overlap(&s->mr_sys, AMDVI_INT_ADDR_FIRST, 1653 &s->mr_ir, 1); 1654 1655 /* AMD IOMMU with x2APIC mode requires xtsup=on */ 1656 if (x86ms->apic_id_limit > 255 && !s->xtsup) { 1657 error_report("AMD IOMMU with x2APIC confguration requires xtsup=on"); 1658 exit(EXIT_FAILURE); 1659 } 1660 if (s->xtsup) { 1661 if (kvm_irqchip_is_split() && !kvm_enable_x2apic()) { 1662 error_report("AMD IOMMU xtsup=on requires support on the KVM side"); 1663 exit(EXIT_FAILURE); 1664 } 1665 } 1666 1667 pci_setup_iommu(bus, &amdvi_iommu_ops, s); 1668 amdvi_init(s); 1669 } 1670 1671 static Property amdvi_properties[] = { 1672 DEFINE_PROP_BOOL("xtsup", AMDVIState, xtsup, false), 1673 DEFINE_PROP_END_OF_LIST(), 1674 }; 1675 1676 static const VMStateDescription vmstate_amdvi_sysbus = { 1677 .name = "amd-iommu", 1678 .unmigratable = 1 1679 }; 1680 1681 static void amdvi_sysbus_instance_init(Object *klass) 1682 { 1683 AMDVIState *s = AMD_IOMMU_DEVICE(klass); 1684 1685 object_initialize(&s->pci, sizeof(s->pci), TYPE_AMD_IOMMU_PCI); 1686 } 1687 1688 static void amdvi_sysbus_class_init(ObjectClass *klass, void *data) 1689 { 1690 DeviceClass *dc = DEVICE_CLASS(klass); 1691 X86IOMMUClass *dc_class = X86_IOMMU_DEVICE_CLASS(klass); 1692 1693 device_class_set_legacy_reset(dc, amdvi_sysbus_reset); 1694 dc->vmsd = &vmstate_amdvi_sysbus; 1695 dc->hotpluggable = false; 1696 dc_class->realize = amdvi_sysbus_realize; 1697 dc_class->int_remap = amdvi_int_remap; 1698 /* Supported by the pc-q35-* machine types */ 1699 dc->user_creatable = true; 1700 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1701 dc->desc = "AMD IOMMU (AMD-Vi) DMA Remapping device"; 1702 device_class_set_props(dc, amdvi_properties); 1703 } 1704 1705 static const TypeInfo amdvi_sysbus = { 1706 .name = TYPE_AMD_IOMMU_DEVICE, 1707 .parent = TYPE_X86_IOMMU_DEVICE, 1708 .instance_size = sizeof(AMDVIState), 1709 .instance_init = amdvi_sysbus_instance_init, 1710 .class_init = amdvi_sysbus_class_init 1711 }; 1712 1713 static void amdvi_pci_class_init(ObjectClass *klass, void *data) 1714 { 1715 DeviceClass *dc = DEVICE_CLASS(klass); 1716 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 1717 1718 k->vendor_id = PCI_VENDOR_ID_AMD; 1719 k->class_id = 0x0806; 1720 k->realize = amdvi_pci_realize; 1721 1722 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 1723 dc->desc = "AMD IOMMU (AMD-Vi) DMA Remapping device"; 1724 } 1725 1726 static const TypeInfo amdvi_pci = { 1727 .name = TYPE_AMD_IOMMU_PCI, 1728 .parent = TYPE_PCI_DEVICE, 1729 .instance_size = sizeof(AMDVIPCIState), 1730 .class_init = amdvi_pci_class_init, 1731 .interfaces = (InterfaceInfo[]) { 1732 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 1733 { }, 1734 }, 1735 }; 1736 1737 static void amdvi_iommu_memory_region_class_init(ObjectClass *klass, void *data) 1738 { 1739 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass); 1740 1741 imrc->translate = amdvi_translate; 1742 imrc->notify_flag_changed = amdvi_iommu_notify_flag_changed; 1743 } 1744 1745 static const TypeInfo amdvi_iommu_memory_region_info = { 1746 .parent = TYPE_IOMMU_MEMORY_REGION, 1747 .name = TYPE_AMD_IOMMU_MEMORY_REGION, 1748 .class_init = amdvi_iommu_memory_region_class_init, 1749 }; 1750 1751 static void amdvi_register_types(void) 1752 { 1753 type_register_static(&amdvi_pci); 1754 type_register_static(&amdvi_sysbus); 1755 type_register_static(&amdvi_iommu_memory_region_info); 1756 } 1757 1758 type_init(amdvi_register_types); 1759