1 /* 2 * QEMU PowerPC PowerNV (POWER9) PHB4 model 3 * 4 * Copyright (c) 2018-2020, IBM Corporation. 5 * 6 * This code is licensed under the GPL version 2 or later. See the 7 * COPYING file in the top-level directory. 8 */ 9 #include "qemu/osdep.h" 10 #include "qemu/log.h" 11 #include "qapi/visitor.h" 12 #include "qapi/error.h" 13 #include "qemu-common.h" 14 #include "monitor/monitor.h" 15 #include "target/ppc/cpu.h" 16 #include "hw/pci-host/pnv_phb4_regs.h" 17 #include "hw/pci-host/pnv_phb4.h" 18 #include "hw/pci/pcie_host.h" 19 #include "hw/pci/pcie_port.h" 20 #include "hw/ppc/pnv.h" 21 #include "hw/ppc/pnv_xscom.h" 22 #include "hw/irq.h" 23 #include "hw/qdev-properties.h" 24 #include "qom/object.h" 25 #include "sysemu/sysemu.h" 26 #include "trace.h" 27 28 #define phb_error(phb, fmt, ...) \ 29 qemu_log_mask(LOG_GUEST_ERROR, "phb4[%d:%d]: " fmt "\n", \ 30 (phb)->chip_id, (phb)->phb_id, ## __VA_ARGS__) 31 32 #define phb_pec_error(pec, fmt, ...) \ 33 qemu_log_mask(LOG_GUEST_ERROR, "phb4_pec[%d:%d]: " fmt "\n", \ 34 (pec)->chip_id, (pec)->index, ## __VA_ARGS__) 35 36 /* 37 * QEMU version of the GETFIELD/SETFIELD macros 38 * 39 * These are common with the PnvXive model. 40 */ 41 static inline uint64_t GETFIELD(uint64_t mask, uint64_t word) 42 { 43 return (word & mask) >> ctz64(mask); 44 } 45 46 static inline uint64_t SETFIELD(uint64_t mask, uint64_t word, 47 uint64_t value) 48 { 49 return (word & ~mask) | ((value << ctz64(mask)) & mask); 50 } 51 52 static PCIDevice *pnv_phb4_find_cfg_dev(PnvPHB4 *phb) 53 { 54 PCIHostState *pci = PCI_HOST_BRIDGE(phb); 55 uint64_t addr = phb->regs[PHB_CONFIG_ADDRESS >> 3]; 56 uint8_t bus, devfn; 57 58 if (!(addr >> 63)) { 59 return NULL; 60 } 61 bus = (addr >> 52) & 0xff; 62 devfn = (addr >> 44) & 0xff; 63 64 /* We don't access the root complex this way */ 65 if (bus == 0 && devfn == 0) { 66 return NULL; 67 } 68 return pci_find_device(pci->bus, bus, devfn); 69 } 70 71 /* 72 * The CONFIG_DATA register expects little endian accesses, but as the 73 * region is big endian, we have to swap the value. 74 */ 75 static void pnv_phb4_config_write(PnvPHB4 *phb, unsigned off, 76 unsigned size, uint64_t val) 77 { 78 uint32_t cfg_addr, limit; 79 PCIDevice *pdev; 80 81 pdev = pnv_phb4_find_cfg_dev(phb); 82 if (!pdev) { 83 return; 84 } 85 cfg_addr = (phb->regs[PHB_CONFIG_ADDRESS >> 3] >> 32) & 0xffc; 86 cfg_addr |= off; 87 limit = pci_config_size(pdev); 88 if (limit <= cfg_addr) { 89 /* 90 * conventional pci device can be behind pcie-to-pci bridge. 91 * 256 <= addr < 4K has no effects. 92 */ 93 return; 94 } 95 switch (size) { 96 case 1: 97 break; 98 case 2: 99 val = bswap16(val); 100 break; 101 case 4: 102 val = bswap32(val); 103 break; 104 default: 105 g_assert_not_reached(); 106 } 107 pci_host_config_write_common(pdev, cfg_addr, limit, val, size); 108 } 109 110 static uint64_t pnv_phb4_config_read(PnvPHB4 *phb, unsigned off, 111 unsigned size) 112 { 113 uint32_t cfg_addr, limit; 114 PCIDevice *pdev; 115 uint64_t val; 116 117 pdev = pnv_phb4_find_cfg_dev(phb); 118 if (!pdev) { 119 return ~0ull; 120 } 121 cfg_addr = (phb->regs[PHB_CONFIG_ADDRESS >> 3] >> 32) & 0xffc; 122 cfg_addr |= off; 123 limit = pci_config_size(pdev); 124 if (limit <= cfg_addr) { 125 /* 126 * conventional pci device can be behind pcie-to-pci bridge. 127 * 256 <= addr < 4K has no effects. 128 */ 129 return ~0ull; 130 } 131 val = pci_host_config_read_common(pdev, cfg_addr, limit, size); 132 switch (size) { 133 case 1: 134 return val; 135 case 2: 136 return bswap16(val); 137 case 4: 138 return bswap32(val); 139 default: 140 g_assert_not_reached(); 141 } 142 } 143 144 /* 145 * Root complex register accesses are memory mapped. 146 */ 147 static void pnv_phb4_rc_config_write(PnvPHB4 *phb, unsigned off, 148 unsigned size, uint64_t val) 149 { 150 PCIHostState *pci = PCI_HOST_BRIDGE(phb); 151 PCIDevice *pdev; 152 153 if (size != 4) { 154 phb_error(phb, "rc_config_write invalid size %d\n", size); 155 return; 156 } 157 158 pdev = pci_find_device(pci->bus, 0, 0); 159 if (!pdev) { 160 phb_error(phb, "rc_config_write device not found\n"); 161 return; 162 } 163 164 pci_host_config_write_common(pdev, off, PHB_RC_CONFIG_SIZE, 165 bswap32(val), 4); 166 } 167 168 static uint64_t pnv_phb4_rc_config_read(PnvPHB4 *phb, unsigned off, 169 unsigned size) 170 { 171 PCIHostState *pci = PCI_HOST_BRIDGE(phb); 172 PCIDevice *pdev; 173 uint64_t val; 174 175 if (size != 4) { 176 phb_error(phb, "rc_config_read invalid size %d\n", size); 177 return ~0ull; 178 } 179 180 pdev = pci_find_device(pci->bus, 0, 0); 181 if (!pdev) { 182 phb_error(phb, "rc_config_read device not found\n"); 183 return ~0ull; 184 } 185 186 val = pci_host_config_read_common(pdev, off, PHB_RC_CONFIG_SIZE, 4); 187 return bswap32(val); 188 } 189 190 static void pnv_phb4_check_mbt(PnvPHB4 *phb, uint32_t index) 191 { 192 uint64_t base, start, size, mbe0, mbe1; 193 MemoryRegion *parent; 194 char name[64]; 195 196 /* Unmap first */ 197 if (memory_region_is_mapped(&phb->mr_mmio[index])) { 198 /* Should we destroy it in RCU friendly way... ? */ 199 memory_region_del_subregion(phb->mr_mmio[index].container, 200 &phb->mr_mmio[index]); 201 } 202 203 /* Get table entry */ 204 mbe0 = phb->ioda_MBT[(index << 1)]; 205 mbe1 = phb->ioda_MBT[(index << 1) + 1]; 206 207 if (!(mbe0 & IODA3_MBT0_ENABLE)) { 208 return; 209 } 210 211 /* Grab geometry from registers */ 212 base = GETFIELD(IODA3_MBT0_BASE_ADDR, mbe0) << 12; 213 size = GETFIELD(IODA3_MBT1_MASK, mbe1) << 12; 214 size |= 0xff00000000000000ull; 215 size = ~size + 1; 216 217 /* Calculate PCI side start address based on M32/M64 window type */ 218 if (mbe0 & IODA3_MBT0_TYPE_M32) { 219 start = phb->regs[PHB_M32_START_ADDR >> 3]; 220 if ((start + size) > 0x100000000ull) { 221 phb_error(phb, "M32 set beyond 4GB boundary !"); 222 size = 0x100000000 - start; 223 } 224 } else { 225 start = base | (phb->regs[PHB_M64_UPPER_BITS >> 3]); 226 } 227 228 /* TODO: Figure out how to implemet/decode AOMASK */ 229 230 /* Check if it matches an enabled MMIO region in the PEC stack */ 231 if (memory_region_is_mapped(&phb->mmbar0) && 232 base >= phb->mmio0_base && 233 (base + size) <= (phb->mmio0_base + phb->mmio0_size)) { 234 parent = &phb->mmbar0; 235 base -= phb->mmio0_base; 236 } else if (memory_region_is_mapped(&phb->mmbar1) && 237 base >= phb->mmio1_base && 238 (base + size) <= (phb->mmio1_base + phb->mmio1_size)) { 239 parent = &phb->mmbar1; 240 base -= phb->mmio1_base; 241 } else { 242 phb_error(phb, "PHB MBAR %d out of parent bounds", index); 243 return; 244 } 245 246 /* Create alias (better name ?) */ 247 snprintf(name, sizeof(name), "phb4-mbar%d", index); 248 memory_region_init_alias(&phb->mr_mmio[index], OBJECT(phb), name, 249 &phb->pci_mmio, start, size); 250 memory_region_add_subregion(parent, base, &phb->mr_mmio[index]); 251 } 252 253 static void pnv_phb4_check_all_mbt(PnvPHB4 *phb) 254 { 255 uint64_t i; 256 uint32_t num_windows = phb->big_phb ? PNV_PHB4_MAX_MMIO_WINDOWS : 257 PNV_PHB4_MIN_MMIO_WINDOWS; 258 259 for (i = 0; i < num_windows; i++) { 260 pnv_phb4_check_mbt(phb, i); 261 } 262 } 263 264 static uint64_t *pnv_phb4_ioda_access(PnvPHB4 *phb, 265 unsigned *out_table, unsigned *out_idx) 266 { 267 uint64_t adreg = phb->regs[PHB_IODA_ADDR >> 3]; 268 unsigned int index = GETFIELD(PHB_IODA_AD_TADR, adreg); 269 unsigned int table = GETFIELD(PHB_IODA_AD_TSEL, adreg); 270 unsigned int mask; 271 uint64_t *tptr = NULL; 272 273 switch (table) { 274 case IODA3_TBL_LIST: 275 tptr = phb->ioda_LIST; 276 mask = 7; 277 break; 278 case IODA3_TBL_MIST: 279 tptr = phb->ioda_MIST; 280 mask = phb->big_phb ? PNV_PHB4_MAX_MIST : (PNV_PHB4_MAX_MIST >> 1); 281 mask -= 1; 282 break; 283 case IODA3_TBL_RCAM: 284 mask = phb->big_phb ? 127 : 63; 285 break; 286 case IODA3_TBL_MRT: 287 mask = phb->big_phb ? 15 : 7; 288 break; 289 case IODA3_TBL_PESTA: 290 case IODA3_TBL_PESTB: 291 mask = phb->big_phb ? PNV_PHB4_MAX_PEs : (PNV_PHB4_MAX_PEs >> 1); 292 mask -= 1; 293 break; 294 case IODA3_TBL_TVT: 295 tptr = phb->ioda_TVT; 296 mask = phb->big_phb ? PNV_PHB4_MAX_TVEs : (PNV_PHB4_MAX_TVEs >> 1); 297 mask -= 1; 298 break; 299 case IODA3_TBL_TCR: 300 case IODA3_TBL_TDR: 301 mask = phb->big_phb ? 1023 : 511; 302 break; 303 case IODA3_TBL_MBT: 304 tptr = phb->ioda_MBT; 305 mask = phb->big_phb ? PNV_PHB4_MAX_MBEs : (PNV_PHB4_MAX_MBEs >> 1); 306 mask -= 1; 307 break; 308 case IODA3_TBL_MDT: 309 tptr = phb->ioda_MDT; 310 mask = phb->big_phb ? PNV_PHB4_MAX_PEs : (PNV_PHB4_MAX_PEs >> 1); 311 mask -= 1; 312 break; 313 case IODA3_TBL_PEEV: 314 tptr = phb->ioda_PEEV; 315 mask = phb->big_phb ? PNV_PHB4_MAX_PEEVs : (PNV_PHB4_MAX_PEEVs >> 1); 316 mask -= 1; 317 break; 318 default: 319 phb_error(phb, "invalid IODA table %d", table); 320 return NULL; 321 } 322 index &= mask; 323 if (out_idx) { 324 *out_idx = index; 325 } 326 if (out_table) { 327 *out_table = table; 328 } 329 if (tptr) { 330 tptr += index; 331 } 332 if (adreg & PHB_IODA_AD_AUTOINC) { 333 index = (index + 1) & mask; 334 adreg = SETFIELD(PHB_IODA_AD_TADR, adreg, index); 335 } 336 337 phb->regs[PHB_IODA_ADDR >> 3] = adreg; 338 return tptr; 339 } 340 341 static uint64_t pnv_phb4_ioda_read(PnvPHB4 *phb) 342 { 343 unsigned table, idx; 344 uint64_t *tptr; 345 346 tptr = pnv_phb4_ioda_access(phb, &table, &idx); 347 if (!tptr) { 348 /* Special PESTA case */ 349 if (table == IODA3_TBL_PESTA) { 350 return ((uint64_t)(phb->ioda_PEST_AB[idx] & 1)) << 63; 351 } else if (table == IODA3_TBL_PESTB) { 352 return ((uint64_t)(phb->ioda_PEST_AB[idx] & 2)) << 62; 353 } 354 /* Return 0 on unsupported tables, not ff's */ 355 return 0; 356 } 357 return *tptr; 358 } 359 360 static void pnv_phb4_ioda_write(PnvPHB4 *phb, uint64_t val) 361 { 362 unsigned table, idx; 363 uint64_t *tptr; 364 365 tptr = pnv_phb4_ioda_access(phb, &table, &idx); 366 if (!tptr) { 367 /* Special PESTA case */ 368 if (table == IODA3_TBL_PESTA) { 369 phb->ioda_PEST_AB[idx] &= ~1; 370 phb->ioda_PEST_AB[idx] |= (val >> 63) & 1; 371 } else if (table == IODA3_TBL_PESTB) { 372 phb->ioda_PEST_AB[idx] &= ~2; 373 phb->ioda_PEST_AB[idx] |= (val >> 62) & 2; 374 } 375 return; 376 } 377 378 /* Handle side effects */ 379 switch (table) { 380 case IODA3_TBL_LIST: 381 break; 382 case IODA3_TBL_MIST: { 383 /* Special mask for MIST partial write */ 384 uint64_t adreg = phb->regs[PHB_IODA_ADDR >> 3]; 385 uint32_t mmask = GETFIELD(PHB_IODA_AD_MIST_PWV, adreg); 386 uint64_t v = *tptr; 387 if (mmask == 0) { 388 mmask = 0xf; 389 } 390 if (mmask & 8) { 391 v &= 0x0000ffffffffffffull; 392 v |= 0xcfff000000000000ull & val; 393 } 394 if (mmask & 4) { 395 v &= 0xffff0000ffffffffull; 396 v |= 0x0000cfff00000000ull & val; 397 } 398 if (mmask & 2) { 399 v &= 0xffffffff0000ffffull; 400 v |= 0x00000000cfff0000ull & val; 401 } 402 if (mmask & 1) { 403 v &= 0xffffffffffff0000ull; 404 v |= 0x000000000000cfffull & val; 405 } 406 *tptr = v; 407 break; 408 } 409 case IODA3_TBL_MBT: 410 *tptr = val; 411 412 /* Copy accross the valid bit to the other half */ 413 phb->ioda_MBT[idx ^ 1] &= 0x7fffffffffffffffull; 414 phb->ioda_MBT[idx ^ 1] |= 0x8000000000000000ull & val; 415 416 /* Update mappings */ 417 pnv_phb4_check_mbt(phb, idx >> 1); 418 break; 419 default: 420 *tptr = val; 421 } 422 } 423 424 static void pnv_phb4_rtc_invalidate(PnvPHB4 *phb, uint64_t val) 425 { 426 PnvPhb4DMASpace *ds; 427 428 /* Always invalidate all for now ... */ 429 QLIST_FOREACH(ds, &phb->dma_spaces, list) { 430 ds->pe_num = PHB_INVALID_PE; 431 } 432 } 433 434 static void pnv_phb4_update_msi_regions(PnvPhb4DMASpace *ds) 435 { 436 uint64_t cfg = ds->phb->regs[PHB_PHB4_CONFIG >> 3]; 437 438 if (cfg & PHB_PHB4C_32BIT_MSI_EN) { 439 if (!memory_region_is_mapped(MEMORY_REGION(&ds->msi32_mr))) { 440 memory_region_add_subregion(MEMORY_REGION(&ds->dma_mr), 441 0xffff0000, &ds->msi32_mr); 442 } 443 } else { 444 if (memory_region_is_mapped(MEMORY_REGION(&ds->msi32_mr))) { 445 memory_region_del_subregion(MEMORY_REGION(&ds->dma_mr), 446 &ds->msi32_mr); 447 } 448 } 449 450 if (cfg & PHB_PHB4C_64BIT_MSI_EN) { 451 if (!memory_region_is_mapped(MEMORY_REGION(&ds->msi64_mr))) { 452 memory_region_add_subregion(MEMORY_REGION(&ds->dma_mr), 453 (1ull << 60), &ds->msi64_mr); 454 } 455 } else { 456 if (memory_region_is_mapped(MEMORY_REGION(&ds->msi64_mr))) { 457 memory_region_del_subregion(MEMORY_REGION(&ds->dma_mr), 458 &ds->msi64_mr); 459 } 460 } 461 } 462 463 static void pnv_phb4_update_all_msi_regions(PnvPHB4 *phb) 464 { 465 PnvPhb4DMASpace *ds; 466 467 QLIST_FOREACH(ds, &phb->dma_spaces, list) { 468 pnv_phb4_update_msi_regions(ds); 469 } 470 } 471 472 static void pnv_phb4_update_xsrc(PnvPHB4 *phb) 473 { 474 int shift, flags, i, lsi_base; 475 XiveSource *xsrc = &phb->xsrc; 476 477 /* The XIVE source characteristics can be set at run time */ 478 if (phb->regs[PHB_CTRLR >> 3] & PHB_CTRLR_IRQ_PGSZ_64K) { 479 shift = XIVE_ESB_64K; 480 } else { 481 shift = XIVE_ESB_4K; 482 } 483 if (phb->regs[PHB_CTRLR >> 3] & PHB_CTRLR_IRQ_STORE_EOI) { 484 flags = XIVE_SRC_STORE_EOI; 485 } else { 486 flags = 0; 487 } 488 489 phb->xsrc.esb_shift = shift; 490 phb->xsrc.esb_flags = flags; 491 492 lsi_base = GETFIELD(PHB_LSI_SRC_ID, phb->regs[PHB_LSI_SOURCE_ID >> 3]); 493 lsi_base <<= 3; 494 495 /* TODO: handle reset values of PHB_LSI_SRC_ID */ 496 if (!lsi_base) { 497 return; 498 } 499 500 /* TODO: need a xive_source_irq_reset_lsi() */ 501 bitmap_zero(xsrc->lsi_map, xsrc->nr_irqs); 502 503 for (i = 0; i < xsrc->nr_irqs; i++) { 504 bool msi = (i < lsi_base || i >= (lsi_base + 8)); 505 if (!msi) { 506 xive_source_irq_set_lsi(xsrc, i); 507 } 508 } 509 } 510 511 static void pnv_phb4_reg_write(void *opaque, hwaddr off, uint64_t val, 512 unsigned size) 513 { 514 PnvPHB4 *phb = PNV_PHB4(opaque); 515 bool changed; 516 517 /* Special case outbound configuration data */ 518 if ((off & 0xfffc) == PHB_CONFIG_DATA) { 519 pnv_phb4_config_write(phb, off & 0x3, size, val); 520 return; 521 } 522 523 /* Special case RC configuration space */ 524 if ((off & 0xf800) == PHB_RC_CONFIG_BASE) { 525 pnv_phb4_rc_config_write(phb, off & 0x7ff, size, val); 526 return; 527 } 528 529 /* Other registers are 64-bit only */ 530 if (size != 8 || off & 0x7) { 531 phb_error(phb, "Invalid register access, offset: 0x%"PRIx64" size: %d", 532 off, size); 533 return; 534 } 535 536 /* Handle masking */ 537 switch (off) { 538 case PHB_LSI_SOURCE_ID: 539 val &= PHB_LSI_SRC_ID; 540 break; 541 case PHB_M64_UPPER_BITS: 542 val &= 0xff00000000000000ull; 543 break; 544 /* TCE Kill */ 545 case PHB_TCE_KILL: 546 /* Clear top 3 bits which HW does to indicate successful queuing */ 547 val &= ~(PHB_TCE_KILL_ALL | PHB_TCE_KILL_PE | PHB_TCE_KILL_ONE); 548 break; 549 case PHB_Q_DMA_R: 550 /* 551 * This is enough logic to make SW happy but we aren't 552 * actually quiescing the DMAs 553 */ 554 if (val & PHB_Q_DMA_R_AUTORESET) { 555 val = 0; 556 } else { 557 val &= PHB_Q_DMA_R_QUIESCE_DMA; 558 } 559 break; 560 /* LEM stuff */ 561 case PHB_LEM_FIR_AND_MASK: 562 phb->regs[PHB_LEM_FIR_ACCUM >> 3] &= val; 563 return; 564 case PHB_LEM_FIR_OR_MASK: 565 phb->regs[PHB_LEM_FIR_ACCUM >> 3] |= val; 566 return; 567 case PHB_LEM_ERROR_AND_MASK: 568 phb->regs[PHB_LEM_ERROR_MASK >> 3] &= val; 569 return; 570 case PHB_LEM_ERROR_OR_MASK: 571 phb->regs[PHB_LEM_ERROR_MASK >> 3] |= val; 572 return; 573 case PHB_LEM_WOF: 574 val = 0; 575 break; 576 /* TODO: More regs ..., maybe create a table with masks... */ 577 578 /* Read only registers */ 579 case PHB_CPU_LOADSTORE_STATUS: 580 case PHB_ETU_ERR_SUMMARY: 581 case PHB_PHB4_GEN_CAP: 582 case PHB_PHB4_TCE_CAP: 583 case PHB_PHB4_IRQ_CAP: 584 case PHB_PHB4_EEH_CAP: 585 return; 586 } 587 588 /* Record whether it changed */ 589 changed = phb->regs[off >> 3] != val; 590 591 /* Store in register cache first */ 592 phb->regs[off >> 3] = val; 593 594 /* Handle side effects */ 595 switch (off) { 596 case PHB_PHB4_CONFIG: 597 if (changed) { 598 pnv_phb4_update_all_msi_regions(phb); 599 } 600 break; 601 case PHB_M32_START_ADDR: 602 case PHB_M64_UPPER_BITS: 603 if (changed) { 604 pnv_phb4_check_all_mbt(phb); 605 } 606 break; 607 608 /* IODA table accesses */ 609 case PHB_IODA_DATA0: 610 pnv_phb4_ioda_write(phb, val); 611 break; 612 613 /* RTC invalidation */ 614 case PHB_RTC_INVALIDATE: 615 pnv_phb4_rtc_invalidate(phb, val); 616 break; 617 618 /* PHB Control (Affects XIVE source) */ 619 case PHB_CTRLR: 620 case PHB_LSI_SOURCE_ID: 621 pnv_phb4_update_xsrc(phb); 622 break; 623 624 /* Silent simple writes */ 625 case PHB_ASN_CMPM: 626 case PHB_CONFIG_ADDRESS: 627 case PHB_IODA_ADDR: 628 case PHB_TCE_KILL: 629 case PHB_TCE_SPEC_CTL: 630 case PHB_PEST_BAR: 631 case PHB_PELTV_BAR: 632 case PHB_RTT_BAR: 633 case PHB_LEM_FIR_ACCUM: 634 case PHB_LEM_ERROR_MASK: 635 case PHB_LEM_ACTION0: 636 case PHB_LEM_ACTION1: 637 case PHB_TCE_TAG_ENABLE: 638 case PHB_INT_NOTIFY_ADDR: 639 case PHB_INT_NOTIFY_INDEX: 640 case PHB_DMARD_SYNC: 641 break; 642 643 /* Noise on anything else */ 644 default: 645 qemu_log_mask(LOG_UNIMP, "phb4: reg_write 0x%"PRIx64"=%"PRIx64"\n", 646 off, val); 647 } 648 } 649 650 static uint64_t pnv_phb4_reg_read(void *opaque, hwaddr off, unsigned size) 651 { 652 PnvPHB4 *phb = PNV_PHB4(opaque); 653 uint64_t val; 654 655 if ((off & 0xfffc) == PHB_CONFIG_DATA) { 656 return pnv_phb4_config_read(phb, off & 0x3, size); 657 } 658 659 /* Special case RC configuration space */ 660 if ((off & 0xf800) == PHB_RC_CONFIG_BASE) { 661 return pnv_phb4_rc_config_read(phb, off & 0x7ff, size); 662 } 663 664 /* Other registers are 64-bit only */ 665 if (size != 8 || off & 0x7) { 666 phb_error(phb, "Invalid register access, offset: 0x%"PRIx64" size: %d", 667 off, size); 668 return ~0ull; 669 } 670 671 /* Default read from cache */ 672 val = phb->regs[off >> 3]; 673 674 switch (off) { 675 case PHB_VERSION: 676 return phb->version; 677 678 /* Read-only */ 679 case PHB_PHB4_GEN_CAP: 680 return 0xe4b8000000000000ull; 681 case PHB_PHB4_TCE_CAP: 682 return phb->big_phb ? 0x4008440000000400ull : 0x2008440000000200ull; 683 case PHB_PHB4_IRQ_CAP: 684 return phb->big_phb ? 0x0800000000001000ull : 0x0800000000000800ull; 685 case PHB_PHB4_EEH_CAP: 686 return phb->big_phb ? 0x2000000000000000ull : 0x1000000000000000ull; 687 688 /* IODA table accesses */ 689 case PHB_IODA_DATA0: 690 return pnv_phb4_ioda_read(phb); 691 692 /* Link training always appears trained */ 693 case PHB_PCIE_DLP_TRAIN_CTL: 694 /* TODO: Do something sensible with speed ? */ 695 return PHB_PCIE_DLP_INBAND_PRESENCE | PHB_PCIE_DLP_TL_LINKACT; 696 697 /* DMA read sync: make it look like it's complete */ 698 case PHB_DMARD_SYNC: 699 return PHB_DMARD_SYNC_COMPLETE; 700 701 /* Silent simple reads */ 702 case PHB_LSI_SOURCE_ID: 703 case PHB_CPU_LOADSTORE_STATUS: 704 case PHB_ASN_CMPM: 705 case PHB_PHB4_CONFIG: 706 case PHB_M32_START_ADDR: 707 case PHB_CONFIG_ADDRESS: 708 case PHB_IODA_ADDR: 709 case PHB_RTC_INVALIDATE: 710 case PHB_TCE_KILL: 711 case PHB_TCE_SPEC_CTL: 712 case PHB_PEST_BAR: 713 case PHB_PELTV_BAR: 714 case PHB_RTT_BAR: 715 case PHB_M64_UPPER_BITS: 716 case PHB_CTRLR: 717 case PHB_LEM_FIR_ACCUM: 718 case PHB_LEM_ERROR_MASK: 719 case PHB_LEM_ACTION0: 720 case PHB_LEM_ACTION1: 721 case PHB_TCE_TAG_ENABLE: 722 case PHB_INT_NOTIFY_ADDR: 723 case PHB_INT_NOTIFY_INDEX: 724 case PHB_Q_DMA_R: 725 case PHB_ETU_ERR_SUMMARY: 726 break; 727 728 /* Noise on anything else */ 729 default: 730 qemu_log_mask(LOG_UNIMP, "phb4: reg_read 0x%"PRIx64"=%"PRIx64"\n", 731 off, val); 732 } 733 return val; 734 } 735 736 static const MemoryRegionOps pnv_phb4_reg_ops = { 737 .read = pnv_phb4_reg_read, 738 .write = pnv_phb4_reg_write, 739 .valid.min_access_size = 1, 740 .valid.max_access_size = 8, 741 .impl.min_access_size = 1, 742 .impl.max_access_size = 8, 743 .endianness = DEVICE_BIG_ENDIAN, 744 }; 745 746 static uint64_t pnv_phb4_xscom_read(void *opaque, hwaddr addr, unsigned size) 747 { 748 PnvPHB4 *phb = PNV_PHB4(opaque); 749 uint32_t reg = addr >> 3; 750 uint64_t val; 751 hwaddr offset; 752 753 switch (reg) { 754 case PHB_SCOM_HV_IND_ADDR: 755 return phb->scom_hv_ind_addr_reg; 756 757 case PHB_SCOM_HV_IND_DATA: 758 if (!(phb->scom_hv_ind_addr_reg & PHB_SCOM_HV_IND_ADDR_VALID)) { 759 phb_error(phb, "Invalid indirect address"); 760 return ~0ull; 761 } 762 size = (phb->scom_hv_ind_addr_reg & PHB_SCOM_HV_IND_ADDR_4B) ? 4 : 8; 763 offset = GETFIELD(PHB_SCOM_HV_IND_ADDR_ADDR, phb->scom_hv_ind_addr_reg); 764 val = pnv_phb4_reg_read(phb, offset, size); 765 if (phb->scom_hv_ind_addr_reg & PHB_SCOM_HV_IND_ADDR_AUTOINC) { 766 offset += size; 767 offset &= 0x3fff; 768 phb->scom_hv_ind_addr_reg = SETFIELD(PHB_SCOM_HV_IND_ADDR_ADDR, 769 phb->scom_hv_ind_addr_reg, 770 offset); 771 } 772 return val; 773 case PHB_SCOM_ETU_LEM_FIR: 774 case PHB_SCOM_ETU_LEM_FIR_AND: 775 case PHB_SCOM_ETU_LEM_FIR_OR: 776 case PHB_SCOM_ETU_LEM_FIR_MSK: 777 case PHB_SCOM_ETU_LEM_ERR_MSK_AND: 778 case PHB_SCOM_ETU_LEM_ERR_MSK_OR: 779 case PHB_SCOM_ETU_LEM_ACT0: 780 case PHB_SCOM_ETU_LEM_ACT1: 781 case PHB_SCOM_ETU_LEM_WOF: 782 offset = ((reg - PHB_SCOM_ETU_LEM_FIR) << 3) + PHB_LEM_FIR_ACCUM; 783 return pnv_phb4_reg_read(phb, offset, size); 784 case PHB_SCOM_ETU_PMON_CONFIG: 785 case PHB_SCOM_ETU_PMON_CTR0: 786 case PHB_SCOM_ETU_PMON_CTR1: 787 case PHB_SCOM_ETU_PMON_CTR2: 788 case PHB_SCOM_ETU_PMON_CTR3: 789 offset = ((reg - PHB_SCOM_ETU_PMON_CONFIG) << 3) + PHB_PERFMON_CONFIG; 790 return pnv_phb4_reg_read(phb, offset, size); 791 792 default: 793 qemu_log_mask(LOG_UNIMP, "phb4: xscom_read 0x%"HWADDR_PRIx"\n", addr); 794 return ~0ull; 795 } 796 } 797 798 static void pnv_phb4_xscom_write(void *opaque, hwaddr addr, 799 uint64_t val, unsigned size) 800 { 801 PnvPHB4 *phb = PNV_PHB4(opaque); 802 uint32_t reg = addr >> 3; 803 hwaddr offset; 804 805 switch (reg) { 806 case PHB_SCOM_HV_IND_ADDR: 807 phb->scom_hv_ind_addr_reg = val & 0xe000000000001fff; 808 break; 809 case PHB_SCOM_HV_IND_DATA: 810 if (!(phb->scom_hv_ind_addr_reg & PHB_SCOM_HV_IND_ADDR_VALID)) { 811 phb_error(phb, "Invalid indirect address"); 812 break; 813 } 814 size = (phb->scom_hv_ind_addr_reg & PHB_SCOM_HV_IND_ADDR_4B) ? 4 : 8; 815 offset = GETFIELD(PHB_SCOM_HV_IND_ADDR_ADDR, phb->scom_hv_ind_addr_reg); 816 pnv_phb4_reg_write(phb, offset, val, size); 817 if (phb->scom_hv_ind_addr_reg & PHB_SCOM_HV_IND_ADDR_AUTOINC) { 818 offset += size; 819 offset &= 0x3fff; 820 phb->scom_hv_ind_addr_reg = SETFIELD(PHB_SCOM_HV_IND_ADDR_ADDR, 821 phb->scom_hv_ind_addr_reg, 822 offset); 823 } 824 break; 825 case PHB_SCOM_ETU_LEM_FIR: 826 case PHB_SCOM_ETU_LEM_FIR_AND: 827 case PHB_SCOM_ETU_LEM_FIR_OR: 828 case PHB_SCOM_ETU_LEM_FIR_MSK: 829 case PHB_SCOM_ETU_LEM_ERR_MSK_AND: 830 case PHB_SCOM_ETU_LEM_ERR_MSK_OR: 831 case PHB_SCOM_ETU_LEM_ACT0: 832 case PHB_SCOM_ETU_LEM_ACT1: 833 case PHB_SCOM_ETU_LEM_WOF: 834 offset = ((reg - PHB_SCOM_ETU_LEM_FIR) << 3) + PHB_LEM_FIR_ACCUM; 835 pnv_phb4_reg_write(phb, offset, val, size); 836 break; 837 case PHB_SCOM_ETU_PMON_CONFIG: 838 case PHB_SCOM_ETU_PMON_CTR0: 839 case PHB_SCOM_ETU_PMON_CTR1: 840 case PHB_SCOM_ETU_PMON_CTR2: 841 case PHB_SCOM_ETU_PMON_CTR3: 842 offset = ((reg - PHB_SCOM_ETU_PMON_CONFIG) << 3) + PHB_PERFMON_CONFIG; 843 pnv_phb4_reg_write(phb, offset, val, size); 844 break; 845 default: 846 qemu_log_mask(LOG_UNIMP, "phb4: xscom_write 0x%"HWADDR_PRIx 847 "=%"PRIx64"\n", addr, val); 848 } 849 } 850 851 const MemoryRegionOps pnv_phb4_xscom_ops = { 852 .read = pnv_phb4_xscom_read, 853 .write = pnv_phb4_xscom_write, 854 .valid.min_access_size = 8, 855 .valid.max_access_size = 8, 856 .impl.min_access_size = 8, 857 .impl.max_access_size = 8, 858 .endianness = DEVICE_BIG_ENDIAN, 859 }; 860 861 static uint64_t pnv_pec_stk_nest_xscom_read(void *opaque, hwaddr addr, 862 unsigned size) 863 { 864 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque); 865 PnvPHB4 *phb = stack->phb; 866 uint32_t reg = addr >> 3; 867 868 /* TODO: add list of allowed registers and error out if not */ 869 return phb->nest_regs[reg]; 870 } 871 872 static void pnv_phb4_update_regions(PnvPHB4 *phb) 873 { 874 /* Unmap first always */ 875 if (memory_region_is_mapped(&phb->mr_regs)) { 876 memory_region_del_subregion(&phb->phbbar, &phb->mr_regs); 877 } 878 if (memory_region_is_mapped(&phb->xsrc.esb_mmio)) { 879 memory_region_del_subregion(&phb->intbar, &phb->xsrc.esb_mmio); 880 } 881 882 /* Map registers if enabled */ 883 if (memory_region_is_mapped(&phb->phbbar)) { 884 memory_region_add_subregion(&phb->phbbar, 0, &phb->mr_regs); 885 } 886 887 /* Map ESB if enabled */ 888 if (memory_region_is_mapped(&phb->intbar)) { 889 memory_region_add_subregion(&phb->intbar, 0, &phb->xsrc.esb_mmio); 890 } 891 892 /* Check/update m32 */ 893 pnv_phb4_check_all_mbt(phb); 894 } 895 896 static void pnv_pec_stk_update_map(PnvPhb4PecStack *stack) 897 { 898 PnvPhb4PecState *pec = stack->pec; 899 PnvPHB4 *phb = stack->phb; 900 MemoryRegion *sysmem = get_system_memory(); 901 uint64_t bar_en = phb->nest_regs[PEC_NEST_STK_BAR_EN]; 902 uint64_t bar, mask, size; 903 char name[64]; 904 905 /* 906 * NOTE: This will really not work well if those are remapped 907 * after the PHB has created its sub regions. We could do better 908 * if we had a way to resize regions but we don't really care 909 * that much in practice as the stuff below really only happens 910 * once early during boot 911 */ 912 913 /* Handle unmaps */ 914 if (memory_region_is_mapped(&phb->mmbar0) && 915 !(bar_en & PEC_NEST_STK_BAR_EN_MMIO0)) { 916 memory_region_del_subregion(sysmem, &phb->mmbar0); 917 } 918 if (memory_region_is_mapped(&phb->mmbar1) && 919 !(bar_en & PEC_NEST_STK_BAR_EN_MMIO1)) { 920 memory_region_del_subregion(sysmem, &phb->mmbar1); 921 } 922 if (memory_region_is_mapped(&phb->phbbar) && 923 !(bar_en & PEC_NEST_STK_BAR_EN_PHB)) { 924 memory_region_del_subregion(sysmem, &phb->phbbar); 925 } 926 if (memory_region_is_mapped(&phb->intbar) && 927 !(bar_en & PEC_NEST_STK_BAR_EN_INT)) { 928 memory_region_del_subregion(sysmem, &phb->intbar); 929 } 930 931 /* Update PHB */ 932 pnv_phb4_update_regions(phb); 933 934 /* Handle maps */ 935 if (!memory_region_is_mapped(&phb->mmbar0) && 936 (bar_en & PEC_NEST_STK_BAR_EN_MMIO0)) { 937 bar = phb->nest_regs[PEC_NEST_STK_MMIO_BAR0] >> 8; 938 mask = phb->nest_regs[PEC_NEST_STK_MMIO_BAR0_MASK]; 939 size = ((~mask) >> 8) + 1; 940 snprintf(name, sizeof(name), "pec-%d.%d-phb-%d-mmio0", 941 pec->chip_id, pec->index, stack->stack_no); 942 memory_region_init(&phb->mmbar0, OBJECT(phb), name, size); 943 memory_region_add_subregion(sysmem, bar, &phb->mmbar0); 944 phb->mmio0_base = bar; 945 phb->mmio0_size = size; 946 } 947 if (!memory_region_is_mapped(&phb->mmbar1) && 948 (bar_en & PEC_NEST_STK_BAR_EN_MMIO1)) { 949 bar = phb->nest_regs[PEC_NEST_STK_MMIO_BAR1] >> 8; 950 mask = phb->nest_regs[PEC_NEST_STK_MMIO_BAR1_MASK]; 951 size = ((~mask) >> 8) + 1; 952 snprintf(name, sizeof(name), "pec-%d.%d-phb-%d-mmio1", 953 pec->chip_id, pec->index, stack->stack_no); 954 memory_region_init(&phb->mmbar1, OBJECT(phb), name, size); 955 memory_region_add_subregion(sysmem, bar, &phb->mmbar1); 956 phb->mmio1_base = bar; 957 phb->mmio1_size = size; 958 } 959 if (!memory_region_is_mapped(&phb->phbbar) && 960 (bar_en & PEC_NEST_STK_BAR_EN_PHB)) { 961 bar = phb->nest_regs[PEC_NEST_STK_PHB_REGS_BAR] >> 8; 962 size = PNV_PHB4_NUM_REGS << 3; 963 snprintf(name, sizeof(name), "pec-%d.%d-phb-%d", 964 pec->chip_id, pec->index, stack->stack_no); 965 memory_region_init(&phb->phbbar, OBJECT(phb), name, size); 966 memory_region_add_subregion(sysmem, bar, &phb->phbbar); 967 } 968 if (!memory_region_is_mapped(&phb->intbar) && 969 (bar_en & PEC_NEST_STK_BAR_EN_INT)) { 970 bar = phb->nest_regs[PEC_NEST_STK_INT_BAR] >> 8; 971 size = PNV_PHB4_MAX_INTs << 16; 972 snprintf(name, sizeof(name), "pec-%d.%d-phb-%d-int", 973 stack->pec->chip_id, stack->pec->index, stack->stack_no); 974 memory_region_init(&phb->intbar, OBJECT(phb), name, size); 975 memory_region_add_subregion(sysmem, bar, &phb->intbar); 976 } 977 978 /* Update PHB */ 979 pnv_phb4_update_regions(phb); 980 } 981 982 static void pnv_pec_stk_nest_xscom_write(void *opaque, hwaddr addr, 983 uint64_t val, unsigned size) 984 { 985 PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque); 986 PnvPHB4 *phb = stack->phb; 987 PnvPhb4PecState *pec = stack->pec; 988 uint32_t reg = addr >> 3; 989 990 switch (reg) { 991 case PEC_NEST_STK_PCI_NEST_FIR: 992 phb->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] = val; 993 break; 994 case PEC_NEST_STK_PCI_NEST_FIR_CLR: 995 phb->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] &= val; 996 break; 997 case PEC_NEST_STK_PCI_NEST_FIR_SET: 998 phb->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] |= val; 999 break; 1000 case PEC_NEST_STK_PCI_NEST_FIR_MSK: 1001 phb->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] = val; 1002 break; 1003 case PEC_NEST_STK_PCI_NEST_FIR_MSKC: 1004 phb->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] &= val; 1005 break; 1006 case PEC_NEST_STK_PCI_NEST_FIR_MSKS: 1007 phb->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] |= val; 1008 break; 1009 case PEC_NEST_STK_PCI_NEST_FIR_ACT0: 1010 case PEC_NEST_STK_PCI_NEST_FIR_ACT1: 1011 phb->nest_regs[reg] = val; 1012 break; 1013 case PEC_NEST_STK_PCI_NEST_FIR_WOF: 1014 phb->nest_regs[reg] = 0; 1015 break; 1016 case PEC_NEST_STK_ERR_REPORT_0: 1017 case PEC_NEST_STK_ERR_REPORT_1: 1018 case PEC_NEST_STK_PBCQ_GNRL_STATUS: 1019 /* Flag error ? */ 1020 break; 1021 case PEC_NEST_STK_PBCQ_MODE: 1022 phb->nest_regs[reg] = val & 0xff00000000000000ull; 1023 break; 1024 case PEC_NEST_STK_MMIO_BAR0: 1025 case PEC_NEST_STK_MMIO_BAR0_MASK: 1026 case PEC_NEST_STK_MMIO_BAR1: 1027 case PEC_NEST_STK_MMIO_BAR1_MASK: 1028 if (phb->nest_regs[PEC_NEST_STK_BAR_EN] & 1029 (PEC_NEST_STK_BAR_EN_MMIO0 | 1030 PEC_NEST_STK_BAR_EN_MMIO1)) { 1031 phb_pec_error(pec, "Changing enabled BAR unsupported\n"); 1032 } 1033 phb->nest_regs[reg] = val & 0xffffffffff000000ull; 1034 break; 1035 case PEC_NEST_STK_PHB_REGS_BAR: 1036 if (phb->nest_regs[PEC_NEST_STK_BAR_EN] & PEC_NEST_STK_BAR_EN_PHB) { 1037 phb_pec_error(pec, "Changing enabled BAR unsupported\n"); 1038 } 1039 phb->nest_regs[reg] = val & 0xffffffffffc00000ull; 1040 break; 1041 case PEC_NEST_STK_INT_BAR: 1042 if (phb->nest_regs[PEC_NEST_STK_BAR_EN] & PEC_NEST_STK_BAR_EN_INT) { 1043 phb_pec_error(pec, "Changing enabled BAR unsupported\n"); 1044 } 1045 phb->nest_regs[reg] = val & 0xfffffff000000000ull; 1046 break; 1047 case PEC_NEST_STK_BAR_EN: 1048 phb->nest_regs[reg] = val & 0xf000000000000000ull; 1049 pnv_pec_stk_update_map(stack); 1050 break; 1051 case PEC_NEST_STK_DATA_FRZ_TYPE: 1052 case PEC_NEST_STK_PBCQ_TUN_BAR: 1053 /* Not used for now */ 1054 phb->nest_regs[reg] = val; 1055 break; 1056 default: 1057 qemu_log_mask(LOG_UNIMP, "phb4_pec: nest_xscom_write 0x%"HWADDR_PRIx 1058 "=%"PRIx64"\n", addr, val); 1059 } 1060 } 1061 1062 static const MemoryRegionOps pnv_pec_stk_nest_xscom_ops = { 1063 .read = pnv_pec_stk_nest_xscom_read, 1064 .write = pnv_pec_stk_nest_xscom_write, 1065 .valid.min_access_size = 8, 1066 .valid.max_access_size = 8, 1067 .impl.min_access_size = 8, 1068 .impl.max_access_size = 8, 1069 .endianness = DEVICE_BIG_ENDIAN, 1070 }; 1071 1072 static uint64_t pnv_pec_stk_pci_xscom_read(void *opaque, hwaddr addr, 1073 unsigned size) 1074 { 1075 PnvPHB4 *phb = PNV_PHB4(opaque); 1076 uint32_t reg = addr >> 3; 1077 1078 /* TODO: add list of allowed registers and error out if not */ 1079 return phb->pci_regs[reg]; 1080 } 1081 1082 static void pnv_pec_stk_pci_xscom_write(void *opaque, hwaddr addr, 1083 uint64_t val, unsigned size) 1084 { 1085 PnvPHB4 *phb = PNV_PHB4(opaque); 1086 uint32_t reg = addr >> 3; 1087 1088 switch (reg) { 1089 case PEC_PCI_STK_PCI_FIR: 1090 phb->pci_regs[reg] = val; 1091 break; 1092 case PEC_PCI_STK_PCI_FIR_CLR: 1093 phb->pci_regs[PEC_PCI_STK_PCI_FIR] &= val; 1094 break; 1095 case PEC_PCI_STK_PCI_FIR_SET: 1096 phb->pci_regs[PEC_PCI_STK_PCI_FIR] |= val; 1097 break; 1098 case PEC_PCI_STK_PCI_FIR_MSK: 1099 phb->pci_regs[reg] = val; 1100 break; 1101 case PEC_PCI_STK_PCI_FIR_MSKC: 1102 phb->pci_regs[PEC_PCI_STK_PCI_FIR_MSK] &= val; 1103 break; 1104 case PEC_PCI_STK_PCI_FIR_MSKS: 1105 phb->pci_regs[PEC_PCI_STK_PCI_FIR_MSK] |= val; 1106 break; 1107 case PEC_PCI_STK_PCI_FIR_ACT0: 1108 case PEC_PCI_STK_PCI_FIR_ACT1: 1109 phb->pci_regs[reg] = val; 1110 break; 1111 case PEC_PCI_STK_PCI_FIR_WOF: 1112 phb->pci_regs[reg] = 0; 1113 break; 1114 case PEC_PCI_STK_ETU_RESET: 1115 phb->pci_regs[reg] = val & 0x8000000000000000ull; 1116 /* TODO: Implement reset */ 1117 break; 1118 case PEC_PCI_STK_PBAIB_ERR_REPORT: 1119 break; 1120 case PEC_PCI_STK_PBAIB_TX_CMD_CRED: 1121 case PEC_PCI_STK_PBAIB_TX_DAT_CRED: 1122 phb->pci_regs[reg] = val; 1123 break; 1124 default: 1125 qemu_log_mask(LOG_UNIMP, "phb4_pec_stk: pci_xscom_write 0x%"HWADDR_PRIx 1126 "=%"PRIx64"\n", addr, val); 1127 } 1128 } 1129 1130 static const MemoryRegionOps pnv_pec_stk_pci_xscom_ops = { 1131 .read = pnv_pec_stk_pci_xscom_read, 1132 .write = pnv_pec_stk_pci_xscom_write, 1133 .valid.min_access_size = 8, 1134 .valid.max_access_size = 8, 1135 .impl.min_access_size = 8, 1136 .impl.max_access_size = 8, 1137 .endianness = DEVICE_BIG_ENDIAN, 1138 }; 1139 1140 static int pnv_phb4_map_irq(PCIDevice *pci_dev, int irq_num) 1141 { 1142 /* Check that out properly ... */ 1143 return irq_num & 3; 1144 } 1145 1146 static void pnv_phb4_set_irq(void *opaque, int irq_num, int level) 1147 { 1148 PnvPHB4 *phb = PNV_PHB4(opaque); 1149 uint32_t lsi_base; 1150 1151 /* LSI only ... */ 1152 if (irq_num > 3) { 1153 phb_error(phb, "IRQ %x is not an LSI", irq_num); 1154 } 1155 lsi_base = GETFIELD(PHB_LSI_SRC_ID, phb->regs[PHB_LSI_SOURCE_ID >> 3]); 1156 lsi_base <<= 3; 1157 qemu_set_irq(phb->qirqs[lsi_base + irq_num], level); 1158 } 1159 1160 static bool pnv_phb4_resolve_pe(PnvPhb4DMASpace *ds) 1161 { 1162 uint64_t rtt, addr; 1163 uint16_t rte; 1164 int bus_num; 1165 int num_PEs; 1166 1167 /* Already resolved ? */ 1168 if (ds->pe_num != PHB_INVALID_PE) { 1169 return true; 1170 } 1171 1172 /* We need to lookup the RTT */ 1173 rtt = ds->phb->regs[PHB_RTT_BAR >> 3]; 1174 if (!(rtt & PHB_RTT_BAR_ENABLE)) { 1175 phb_error(ds->phb, "DMA with RTT BAR disabled !"); 1176 /* Set error bits ? fence ? ... */ 1177 return false; 1178 } 1179 1180 /* Read RTE */ 1181 bus_num = pci_bus_num(ds->bus); 1182 addr = rtt & PHB_RTT_BASE_ADDRESS_MASK; 1183 addr += 2 * PCI_BUILD_BDF(bus_num, ds->devfn); 1184 if (dma_memory_read(&address_space_memory, addr, &rte, 1185 sizeof(rte), MEMTXATTRS_UNSPECIFIED)) { 1186 phb_error(ds->phb, "Failed to read RTT entry at 0x%"PRIx64, addr); 1187 /* Set error bits ? fence ? ... */ 1188 return false; 1189 } 1190 rte = be16_to_cpu(rte); 1191 1192 /* Fail upon reading of invalid PE# */ 1193 num_PEs = ds->phb->big_phb ? PNV_PHB4_MAX_PEs : (PNV_PHB4_MAX_PEs >> 1); 1194 if (rte >= num_PEs) { 1195 phb_error(ds->phb, "RTE for RID 0x%x invalid (%04x", ds->devfn, rte); 1196 rte &= num_PEs - 1; 1197 } 1198 ds->pe_num = rte; 1199 return true; 1200 } 1201 1202 static void pnv_phb4_translate_tve(PnvPhb4DMASpace *ds, hwaddr addr, 1203 bool is_write, uint64_t tve, 1204 IOMMUTLBEntry *tlb) 1205 { 1206 uint64_t tta = GETFIELD(IODA3_TVT_TABLE_ADDR, tve); 1207 int32_t lev = GETFIELD(IODA3_TVT_NUM_LEVELS, tve); 1208 uint32_t tts = GETFIELD(IODA3_TVT_TCE_TABLE_SIZE, tve); 1209 uint32_t tps = GETFIELD(IODA3_TVT_IO_PSIZE, tve); 1210 1211 /* Invalid levels */ 1212 if (lev > 4) { 1213 phb_error(ds->phb, "Invalid #levels in TVE %d", lev); 1214 return; 1215 } 1216 1217 /* Invalid entry */ 1218 if (tts == 0) { 1219 phb_error(ds->phb, "Access to invalid TVE"); 1220 return; 1221 } 1222 1223 /* IO Page Size of 0 means untranslated, else use TCEs */ 1224 if (tps == 0) { 1225 /* TODO: Handle boundaries */ 1226 1227 /* Use 4k pages like q35 ... for now */ 1228 tlb->iova = addr & 0xfffffffffffff000ull; 1229 tlb->translated_addr = addr & 0x0003fffffffff000ull; 1230 tlb->addr_mask = 0xfffull; 1231 tlb->perm = IOMMU_RW; 1232 } else { 1233 uint32_t tce_shift, tbl_shift, sh; 1234 uint64_t base, taddr, tce, tce_mask; 1235 1236 /* Address bits per bottom level TCE entry */ 1237 tce_shift = tps + 11; 1238 1239 /* Address bits per table level */ 1240 tbl_shift = tts + 8; 1241 1242 /* Top level table base address */ 1243 base = tta << 12; 1244 1245 /* Total shift to first level */ 1246 sh = tbl_shift * lev + tce_shift; 1247 1248 /* TODO: Limit to support IO page sizes */ 1249 1250 /* TODO: Multi-level untested */ 1251 while ((lev--) >= 0) { 1252 /* Grab the TCE address */ 1253 taddr = base | (((addr >> sh) & ((1ul << tbl_shift) - 1)) << 3); 1254 if (dma_memory_read(&address_space_memory, taddr, &tce, 1255 sizeof(tce), MEMTXATTRS_UNSPECIFIED)) { 1256 phb_error(ds->phb, "Failed to read TCE at 0x%"PRIx64, taddr); 1257 return; 1258 } 1259 tce = be64_to_cpu(tce); 1260 1261 /* Check permission for indirect TCE */ 1262 if ((lev >= 0) && !(tce & 3)) { 1263 phb_error(ds->phb, "Invalid indirect TCE at 0x%"PRIx64, taddr); 1264 phb_error(ds->phb, " xlate %"PRIx64":%c TVE=%"PRIx64, addr, 1265 is_write ? 'W' : 'R', tve); 1266 phb_error(ds->phb, " tta=%"PRIx64" lev=%d tts=%d tps=%d", 1267 tta, lev, tts, tps); 1268 return; 1269 } 1270 sh -= tbl_shift; 1271 base = tce & ~0xfffull; 1272 } 1273 1274 /* We exit the loop with TCE being the final TCE */ 1275 tce_mask = ~((1ull << tce_shift) - 1); 1276 tlb->iova = addr & tce_mask; 1277 tlb->translated_addr = tce & tce_mask; 1278 tlb->addr_mask = ~tce_mask; 1279 tlb->perm = tce & 3; 1280 if ((is_write & !(tce & 2)) || ((!is_write) && !(tce & 1))) { 1281 phb_error(ds->phb, "TCE access fault at 0x%"PRIx64, taddr); 1282 phb_error(ds->phb, " xlate %"PRIx64":%c TVE=%"PRIx64, addr, 1283 is_write ? 'W' : 'R', tve); 1284 phb_error(ds->phb, " tta=%"PRIx64" lev=%d tts=%d tps=%d", 1285 tta, lev, tts, tps); 1286 } 1287 } 1288 } 1289 1290 static IOMMUTLBEntry pnv_phb4_translate_iommu(IOMMUMemoryRegion *iommu, 1291 hwaddr addr, 1292 IOMMUAccessFlags flag, 1293 int iommu_idx) 1294 { 1295 PnvPhb4DMASpace *ds = container_of(iommu, PnvPhb4DMASpace, dma_mr); 1296 int tve_sel; 1297 uint64_t tve, cfg; 1298 IOMMUTLBEntry ret = { 1299 .target_as = &address_space_memory, 1300 .iova = addr, 1301 .translated_addr = 0, 1302 .addr_mask = ~(hwaddr)0, 1303 .perm = IOMMU_NONE, 1304 }; 1305 1306 /* Resolve PE# */ 1307 if (!pnv_phb4_resolve_pe(ds)) { 1308 phb_error(ds->phb, "Failed to resolve PE# for bus @%p (%d) devfn 0x%x", 1309 ds->bus, pci_bus_num(ds->bus), ds->devfn); 1310 return ret; 1311 } 1312 1313 /* Check top bits */ 1314 switch (addr >> 60) { 1315 case 00: 1316 /* DMA or 32-bit MSI ? */ 1317 cfg = ds->phb->regs[PHB_PHB4_CONFIG >> 3]; 1318 if ((cfg & PHB_PHB4C_32BIT_MSI_EN) && 1319 ((addr & 0xffffffffffff0000ull) == 0xffff0000ull)) { 1320 phb_error(ds->phb, "xlate on 32-bit MSI region"); 1321 return ret; 1322 } 1323 /* Choose TVE XXX Use PHB4 Control Register */ 1324 tve_sel = (addr >> 59) & 1; 1325 tve = ds->phb->ioda_TVT[ds->pe_num * 2 + tve_sel]; 1326 pnv_phb4_translate_tve(ds, addr, flag & IOMMU_WO, tve, &ret); 1327 break; 1328 case 01: 1329 phb_error(ds->phb, "xlate on 64-bit MSI region"); 1330 break; 1331 default: 1332 phb_error(ds->phb, "xlate on unsupported address 0x%"PRIx64, addr); 1333 } 1334 return ret; 1335 } 1336 1337 #define TYPE_PNV_PHB4_IOMMU_MEMORY_REGION "pnv-phb4-iommu-memory-region" 1338 DECLARE_INSTANCE_CHECKER(IOMMUMemoryRegion, PNV_PHB4_IOMMU_MEMORY_REGION, 1339 TYPE_PNV_PHB4_IOMMU_MEMORY_REGION) 1340 1341 static void pnv_phb4_iommu_memory_region_class_init(ObjectClass *klass, 1342 void *data) 1343 { 1344 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass); 1345 1346 imrc->translate = pnv_phb4_translate_iommu; 1347 } 1348 1349 static const TypeInfo pnv_phb4_iommu_memory_region_info = { 1350 .parent = TYPE_IOMMU_MEMORY_REGION, 1351 .name = TYPE_PNV_PHB4_IOMMU_MEMORY_REGION, 1352 .class_init = pnv_phb4_iommu_memory_region_class_init, 1353 }; 1354 1355 /* 1356 * Return the index/phb-id of a PHB4 that belongs to a 1357 * pec->stacks[stack_index] stack. 1358 */ 1359 int pnv_phb4_pec_get_phb_id(PnvPhb4PecState *pec, int stack_index) 1360 { 1361 PnvPhb4PecClass *pecc = PNV_PHB4_PEC_GET_CLASS(pec); 1362 int index = pec->index; 1363 int offset = 0; 1364 1365 while (index--) { 1366 offset += pecc->num_stacks[index]; 1367 } 1368 1369 return offset + stack_index; 1370 } 1371 1372 /* 1373 * MSI/MSIX memory region implementation. 1374 * The handler handles both MSI and MSIX. 1375 */ 1376 static void pnv_phb4_msi_write(void *opaque, hwaddr addr, 1377 uint64_t data, unsigned size) 1378 { 1379 PnvPhb4DMASpace *ds = opaque; 1380 PnvPHB4 *phb = ds->phb; 1381 1382 uint32_t src = ((addr >> 4) & 0xffff) | (data & 0x1f); 1383 1384 /* Resolve PE# */ 1385 if (!pnv_phb4_resolve_pe(ds)) { 1386 phb_error(phb, "Failed to resolve PE# for bus @%p (%d) devfn 0x%x", 1387 ds->bus, pci_bus_num(ds->bus), ds->devfn); 1388 return; 1389 } 1390 1391 /* TODO: Check it doesn't collide with LSIs */ 1392 if (src >= phb->xsrc.nr_irqs) { 1393 phb_error(phb, "MSI %d out of bounds", src); 1394 return; 1395 } 1396 1397 /* TODO: check PE/MSI assignement */ 1398 1399 qemu_irq_pulse(phb->qirqs[src]); 1400 } 1401 1402 /* There is no .read as the read result is undefined by PCI spec */ 1403 static uint64_t pnv_phb4_msi_read(void *opaque, hwaddr addr, unsigned size) 1404 { 1405 PnvPhb4DMASpace *ds = opaque; 1406 1407 phb_error(ds->phb, "Invalid MSI read @ 0x%" HWADDR_PRIx, addr); 1408 return -1; 1409 } 1410 1411 static const MemoryRegionOps pnv_phb4_msi_ops = { 1412 .read = pnv_phb4_msi_read, 1413 .write = pnv_phb4_msi_write, 1414 .endianness = DEVICE_LITTLE_ENDIAN 1415 }; 1416 1417 static PnvPhb4DMASpace *pnv_phb4_dma_find(PnvPHB4 *phb, PCIBus *bus, int devfn) 1418 { 1419 PnvPhb4DMASpace *ds; 1420 1421 QLIST_FOREACH(ds, &phb->dma_spaces, list) { 1422 if (ds->bus == bus && ds->devfn == devfn) { 1423 break; 1424 } 1425 } 1426 return ds; 1427 } 1428 1429 static AddressSpace *pnv_phb4_dma_iommu(PCIBus *bus, void *opaque, int devfn) 1430 { 1431 PnvPHB4 *phb = opaque; 1432 PnvPhb4DMASpace *ds; 1433 char name[32]; 1434 1435 ds = pnv_phb4_dma_find(phb, bus, devfn); 1436 1437 if (ds == NULL) { 1438 ds = g_malloc0(sizeof(PnvPhb4DMASpace)); 1439 ds->bus = bus; 1440 ds->devfn = devfn; 1441 ds->pe_num = PHB_INVALID_PE; 1442 ds->phb = phb; 1443 snprintf(name, sizeof(name), "phb4-%d.%d-iommu", phb->chip_id, 1444 phb->phb_id); 1445 memory_region_init_iommu(&ds->dma_mr, sizeof(ds->dma_mr), 1446 TYPE_PNV_PHB4_IOMMU_MEMORY_REGION, 1447 OBJECT(phb), name, UINT64_MAX); 1448 address_space_init(&ds->dma_as, MEMORY_REGION(&ds->dma_mr), 1449 name); 1450 memory_region_init_io(&ds->msi32_mr, OBJECT(phb), &pnv_phb4_msi_ops, 1451 ds, "msi32", 0x10000); 1452 memory_region_init_io(&ds->msi64_mr, OBJECT(phb), &pnv_phb4_msi_ops, 1453 ds, "msi64", 0x100000); 1454 pnv_phb4_update_msi_regions(ds); 1455 1456 QLIST_INSERT_HEAD(&phb->dma_spaces, ds, list); 1457 } 1458 return &ds->dma_as; 1459 } 1460 1461 static void pnv_phb4_xscom_realize(PnvPHB4 *phb) 1462 { 1463 PnvPhb4PecStack *stack = phb->stack; 1464 PnvPhb4PecState *pec = stack->pec; 1465 PnvPhb4PecClass *pecc = PNV_PHB4_PEC_GET_CLASS(pec); 1466 uint32_t pec_nest_base; 1467 uint32_t pec_pci_base; 1468 char name[64]; 1469 1470 assert(pec); 1471 1472 /* Initialize the XSCOM regions for the stack registers */ 1473 snprintf(name, sizeof(name), "xscom-pec-%d.%d-nest-stack-%d", 1474 pec->chip_id, pec->index, stack->stack_no); 1475 pnv_xscom_region_init(&stack->nest_regs_mr, OBJECT(stack), 1476 &pnv_pec_stk_nest_xscom_ops, stack, name, 1477 PHB4_PEC_NEST_STK_REGS_COUNT); 1478 1479 snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci-phb-%d", 1480 pec->chip_id, pec->index, stack->stack_no); 1481 pnv_xscom_region_init(&phb->pci_regs_mr, OBJECT(phb), 1482 &pnv_pec_stk_pci_xscom_ops, phb, name, 1483 PHB4_PEC_PCI_STK_REGS_COUNT); 1484 1485 /* PHB pass-through */ 1486 snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci-stack-%d-phb", 1487 pec->chip_id, pec->index, stack->stack_no); 1488 pnv_xscom_region_init(&stack->phb_regs_mr, OBJECT(phb), 1489 &pnv_phb4_xscom_ops, phb, name, 0x40); 1490 1491 pec_nest_base = pecc->xscom_nest_base(pec); 1492 pec_pci_base = pecc->xscom_pci_base(pec); 1493 1494 /* Populate the XSCOM address space. */ 1495 pnv_xscom_add_subregion(pec->chip, 1496 pec_nest_base + 0x40 * (stack->stack_no + 1), 1497 &stack->nest_regs_mr); 1498 pnv_xscom_add_subregion(pec->chip, 1499 pec_pci_base + 0x40 * (stack->stack_no + 1), 1500 &phb->pci_regs_mr); 1501 pnv_xscom_add_subregion(pec->chip, 1502 pec_pci_base + PNV9_XSCOM_PEC_PCI_STK0 + 1503 0x40 * stack->stack_no, 1504 &stack->phb_regs_mr); 1505 } 1506 1507 static void pnv_phb4_instance_init(Object *obj) 1508 { 1509 PnvPHB4 *phb = PNV_PHB4(obj); 1510 1511 QLIST_INIT(&phb->dma_spaces); 1512 1513 /* XIVE interrupt source object */ 1514 object_initialize_child(obj, "source", &phb->xsrc, TYPE_XIVE_SOURCE); 1515 } 1516 1517 static PnvPhb4PecStack *pnv_phb4_get_stack(PnvChip *chip, PnvPHB4 *phb, 1518 Error **errp) 1519 { 1520 Pnv9Chip *chip9 = PNV9_CHIP(chip); 1521 int chip_id = phb->chip_id; 1522 int index = phb->phb_id; 1523 int i, j; 1524 1525 for (i = 0; i < chip->num_pecs; i++) { 1526 /* 1527 * For each PEC, check the amount of stacks it supports 1528 * and see if the given phb4 index matches a stack. 1529 */ 1530 PnvPhb4PecState *pec = &chip9->pecs[i]; 1531 1532 for (j = 0; j < pec->num_stacks; j++) { 1533 if (index == pnv_phb4_pec_get_phb_id(pec, j)) { 1534 return &pec->stacks[j]; 1535 } 1536 } 1537 } 1538 1539 error_setg(errp, 1540 "pnv-phb4 chip-id %d index %d didn't match any existing PEC", 1541 chip_id, index); 1542 1543 return NULL; 1544 } 1545 1546 static void pnv_phb4_realize(DeviceState *dev, Error **errp) 1547 { 1548 PnvPHB4 *phb = PNV_PHB4(dev); 1549 PCIHostState *pci = PCI_HOST_BRIDGE(dev); 1550 XiveSource *xsrc = &phb->xsrc; 1551 Error *local_err = NULL; 1552 int nr_irqs; 1553 char name[32]; 1554 1555 /* User created PHB */ 1556 if (!phb->stack) { 1557 PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine()); 1558 PnvChip *chip = pnv_get_chip(pnv, phb->chip_id); 1559 PnvPhb4PecClass *pecc; 1560 BusState *s; 1561 1562 if (!chip) { 1563 error_setg(errp, "invalid chip id: %d", phb->chip_id); 1564 return; 1565 } 1566 1567 phb->stack = pnv_phb4_get_stack(chip, phb, &local_err); 1568 if (local_err) { 1569 error_propagate(errp, local_err); 1570 return; 1571 } 1572 1573 /* All other phb properties but 'version' are already set */ 1574 pecc = PNV_PHB4_PEC_GET_CLASS(phb->stack->pec); 1575 object_property_set_int(OBJECT(phb), "version", pecc->version, 1576 &error_fatal); 1577 1578 /* 1579 * Assign stack->phb since pnv_phb4_update_regions() uses it 1580 * to access the phb. 1581 */ 1582 phb->stack->phb = phb; 1583 1584 /* 1585 * Reparent user created devices to the chip to build 1586 * correctly the device tree. 1587 */ 1588 pnv_chip_parent_fixup(chip, OBJECT(phb), phb->phb_id); 1589 1590 s = qdev_get_parent_bus(DEVICE(chip)); 1591 if (!qdev_set_parent_bus(DEVICE(phb), s, &local_err)) { 1592 error_propagate(errp, local_err); 1593 return; 1594 } 1595 } 1596 1597 /* Set the "big_phb" flag */ 1598 phb->big_phb = phb->phb_id == 0 || phb->phb_id == 3; 1599 1600 /* Controller Registers */ 1601 snprintf(name, sizeof(name), "phb4-%d.%d-regs", phb->chip_id, 1602 phb->phb_id); 1603 memory_region_init_io(&phb->mr_regs, OBJECT(phb), &pnv_phb4_reg_ops, phb, 1604 name, 0x2000); 1605 1606 /* 1607 * PHB4 doesn't support IO space. However, qemu gets very upset if 1608 * we don't have an IO region to anchor IO BARs onto so we just 1609 * initialize one which we never hook up to anything 1610 */ 1611 1612 snprintf(name, sizeof(name), "phb4-%d.%d-pci-io", phb->chip_id, 1613 phb->phb_id); 1614 memory_region_init(&phb->pci_io, OBJECT(phb), name, 0x10000); 1615 1616 snprintf(name, sizeof(name), "phb4-%d.%d-pci-mmio", phb->chip_id, 1617 phb->phb_id); 1618 memory_region_init(&phb->pci_mmio, OBJECT(phb), name, 1619 PCI_MMIO_TOTAL_SIZE); 1620 1621 pci->bus = pci_register_root_bus(dev, dev->id, 1622 pnv_phb4_set_irq, pnv_phb4_map_irq, phb, 1623 &phb->pci_mmio, &phb->pci_io, 1624 0, 4, TYPE_PNV_PHB4_ROOT_BUS); 1625 pci_setup_iommu(pci->bus, pnv_phb4_dma_iommu, phb); 1626 pci->bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE; 1627 1628 /* Add a single Root port if running with defaults */ 1629 if (defaults_enabled()) { 1630 pnv_phb_attach_root_port(PCI_HOST_BRIDGE(phb), 1631 TYPE_PNV_PHB4_ROOT_PORT); 1632 } 1633 1634 /* Setup XIVE Source */ 1635 if (phb->big_phb) { 1636 nr_irqs = PNV_PHB4_MAX_INTs; 1637 } else { 1638 nr_irqs = PNV_PHB4_MAX_INTs >> 1; 1639 } 1640 object_property_set_int(OBJECT(xsrc), "nr-irqs", nr_irqs, &error_fatal); 1641 object_property_set_link(OBJECT(xsrc), "xive", OBJECT(phb), &error_fatal); 1642 if (!qdev_realize(DEVICE(xsrc), NULL, errp)) { 1643 return; 1644 } 1645 1646 pnv_phb4_update_xsrc(phb); 1647 1648 phb->qirqs = qemu_allocate_irqs(xive_source_set_irq, xsrc, xsrc->nr_irqs); 1649 1650 pnv_phb4_xscom_realize(phb); 1651 } 1652 1653 static const char *pnv_phb4_root_bus_path(PCIHostState *host_bridge, 1654 PCIBus *rootbus) 1655 { 1656 PnvPHB4 *phb = PNV_PHB4(host_bridge); 1657 1658 snprintf(phb->bus_path, sizeof(phb->bus_path), "00%02x:%02x", 1659 phb->chip_id, phb->phb_id); 1660 return phb->bus_path; 1661 } 1662 1663 static void pnv_phb4_xive_notify(XiveNotifier *xf, uint32_t srcno) 1664 { 1665 PnvPHB4 *phb = PNV_PHB4(xf); 1666 uint64_t notif_port = phb->regs[PHB_INT_NOTIFY_ADDR >> 3]; 1667 uint32_t offset = phb->regs[PHB_INT_NOTIFY_INDEX >> 3]; 1668 uint64_t data = XIVE_TRIGGER_PQ | offset | srcno; 1669 MemTxResult result; 1670 1671 trace_pnv_phb4_xive_notify(notif_port, data); 1672 1673 address_space_stq_be(&address_space_memory, notif_port, data, 1674 MEMTXATTRS_UNSPECIFIED, &result); 1675 if (result != MEMTX_OK) { 1676 phb_error(phb, "trigger failed @%"HWADDR_PRIx "\n", notif_port); 1677 return; 1678 } 1679 } 1680 1681 static Property pnv_phb4_properties[] = { 1682 DEFINE_PROP_UINT32("index", PnvPHB4, phb_id, 0), 1683 DEFINE_PROP_UINT32("chip-id", PnvPHB4, chip_id, 0), 1684 DEFINE_PROP_UINT64("version", PnvPHB4, version, 0), 1685 DEFINE_PROP_LINK("stack", PnvPHB4, stack, TYPE_PNV_PHB4_PEC_STACK, 1686 PnvPhb4PecStack *), 1687 DEFINE_PROP_END_OF_LIST(), 1688 }; 1689 1690 static void pnv_phb4_class_init(ObjectClass *klass, void *data) 1691 { 1692 PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass); 1693 DeviceClass *dc = DEVICE_CLASS(klass); 1694 XiveNotifierClass *xfc = XIVE_NOTIFIER_CLASS(klass); 1695 1696 hc->root_bus_path = pnv_phb4_root_bus_path; 1697 dc->realize = pnv_phb4_realize; 1698 device_class_set_props(dc, pnv_phb4_properties); 1699 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1700 dc->user_creatable = true; 1701 1702 xfc->notify = pnv_phb4_xive_notify; 1703 } 1704 1705 static const TypeInfo pnv_phb4_type_info = { 1706 .name = TYPE_PNV_PHB4, 1707 .parent = TYPE_PCIE_HOST_BRIDGE, 1708 .instance_init = pnv_phb4_instance_init, 1709 .instance_size = sizeof(PnvPHB4), 1710 .class_init = pnv_phb4_class_init, 1711 .interfaces = (InterfaceInfo[]) { 1712 { TYPE_XIVE_NOTIFIER }, 1713 { }, 1714 } 1715 }; 1716 1717 static void pnv_phb4_root_bus_class_init(ObjectClass *klass, void *data) 1718 { 1719 BusClass *k = BUS_CLASS(klass); 1720 1721 /* 1722 * PHB4 has only a single root complex. Enforce the limit on the 1723 * parent bus 1724 */ 1725 k->max_dev = 1; 1726 } 1727 1728 static const TypeInfo pnv_phb4_root_bus_info = { 1729 .name = TYPE_PNV_PHB4_ROOT_BUS, 1730 .parent = TYPE_PCIE_BUS, 1731 .class_init = pnv_phb4_root_bus_class_init, 1732 .interfaces = (InterfaceInfo[]) { 1733 { INTERFACE_PCIE_DEVICE }, 1734 { } 1735 }, 1736 }; 1737 1738 static void pnv_phb4_root_port_reset(DeviceState *dev) 1739 { 1740 PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(dev); 1741 PCIDevice *d = PCI_DEVICE(dev); 1742 uint8_t *conf = d->config; 1743 1744 rpc->parent_reset(dev); 1745 1746 pci_byte_test_and_set_mask(conf + PCI_IO_BASE, 1747 PCI_IO_RANGE_MASK & 0xff); 1748 pci_byte_test_and_clear_mask(conf + PCI_IO_LIMIT, 1749 PCI_IO_RANGE_MASK & 0xff); 1750 pci_set_word(conf + PCI_MEMORY_BASE, 0); 1751 pci_set_word(conf + PCI_MEMORY_LIMIT, 0xfff0); 1752 pci_set_word(conf + PCI_PREF_MEMORY_BASE, 0x1); 1753 pci_set_word(conf + PCI_PREF_MEMORY_LIMIT, 0xfff1); 1754 pci_set_long(conf + PCI_PREF_BASE_UPPER32, 0x1); /* Hack */ 1755 pci_set_long(conf + PCI_PREF_LIMIT_UPPER32, 0xffffffff); 1756 } 1757 1758 static void pnv_phb4_root_port_realize(DeviceState *dev, Error **errp) 1759 { 1760 PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(dev); 1761 PCIDevice *pci = PCI_DEVICE(dev); 1762 PCIBus *bus = pci_get_bus(pci); 1763 PnvPHB4 *phb = NULL; 1764 Error *local_err = NULL; 1765 1766 phb = (PnvPHB4 *) object_dynamic_cast(OBJECT(bus->qbus.parent), 1767 TYPE_PNV_PHB4); 1768 1769 if (!phb) { 1770 error_setg(errp, "%s must be connected to pnv-phb4 buses", dev->id); 1771 return; 1772 } 1773 1774 /* Set unique chassis/slot values for the root port */ 1775 qdev_prop_set_uint8(&pci->qdev, "chassis", phb->chip_id); 1776 qdev_prop_set_uint16(&pci->qdev, "slot", phb->phb_id); 1777 1778 rpc->parent_realize(dev, &local_err); 1779 if (local_err) { 1780 error_propagate(errp, local_err); 1781 return; 1782 } 1783 } 1784 1785 static void pnv_phb4_root_port_class_init(ObjectClass *klass, void *data) 1786 { 1787 DeviceClass *dc = DEVICE_CLASS(klass); 1788 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 1789 PCIERootPortClass *rpc = PCIE_ROOT_PORT_CLASS(klass); 1790 1791 dc->desc = "IBM PHB4 PCIE Root Port"; 1792 dc->user_creatable = true; 1793 1794 device_class_set_parent_realize(dc, pnv_phb4_root_port_realize, 1795 &rpc->parent_realize); 1796 device_class_set_parent_reset(dc, pnv_phb4_root_port_reset, 1797 &rpc->parent_reset); 1798 1799 k->vendor_id = PCI_VENDOR_ID_IBM; 1800 k->device_id = PNV_PHB4_DEVICE_ID; 1801 k->revision = 0; 1802 1803 rpc->exp_offset = 0x48; 1804 rpc->aer_offset = 0x100; 1805 1806 dc->reset = &pnv_phb4_root_port_reset; 1807 } 1808 1809 static const TypeInfo pnv_phb4_root_port_info = { 1810 .name = TYPE_PNV_PHB4_ROOT_PORT, 1811 .parent = TYPE_PCIE_ROOT_PORT, 1812 .instance_size = sizeof(PnvPHB4RootPort), 1813 .class_init = pnv_phb4_root_port_class_init, 1814 }; 1815 1816 static void pnv_phb4_register_types(void) 1817 { 1818 type_register_static(&pnv_phb4_root_bus_info); 1819 type_register_static(&pnv_phb4_root_port_info); 1820 type_register_static(&pnv_phb4_type_info); 1821 type_register_static(&pnv_phb4_iommu_memory_region_info); 1822 } 1823 1824 type_init(pnv_phb4_register_types); 1825 1826 void pnv_phb4_pic_print_info(PnvPHB4 *phb, Monitor *mon) 1827 { 1828 uint32_t offset = phb->regs[PHB_INT_NOTIFY_INDEX >> 3]; 1829 1830 monitor_printf(mon, "PHB4[%x:%x] Source %08x .. %08x\n", 1831 phb->chip_id, phb->phb_id, 1832 offset, offset + phb->xsrc.nr_irqs - 1); 1833 xive_source_pic_print_info(&phb->xsrc, 0, mon); 1834 } 1835