1 /* 2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator 3 * 4 * Hypercall based emulated RTAS 5 * 6 * Copyright (c) 2010-2011 David Gibson, IBM Corporation. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 * 26 */ 27 #include "cpu.h" 28 #include "sysemu/sysemu.h" 29 #include "sysemu/char.h" 30 #include "hw/qdev.h" 31 #include "sysemu/device_tree.h" 32 #include "sysemu/cpus.h" 33 34 #include "hw/ppc/spapr.h" 35 #include "hw/ppc/spapr_vio.h" 36 #include "qapi-event.h" 37 #include "hw/boards.h" 38 39 #include <libfdt.h> 40 #include "hw/ppc/spapr_drc.h" 41 42 /* #define DEBUG_SPAPR */ 43 44 #ifdef DEBUG_SPAPR 45 #define DPRINTF(fmt, ...) \ 46 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 47 #else 48 #define DPRINTF(fmt, ...) \ 49 do { } while (0) 50 #endif 51 52 static sPAPRConfigureConnectorState *spapr_ccs_find(sPAPRMachineState *spapr, 53 uint32_t drc_index) 54 { 55 sPAPRConfigureConnectorState *ccs = NULL; 56 57 QTAILQ_FOREACH(ccs, &spapr->ccs_list, next) { 58 if (ccs->drc_index == drc_index) { 59 break; 60 } 61 } 62 63 return ccs; 64 } 65 66 static void spapr_ccs_add(sPAPRMachineState *spapr, 67 sPAPRConfigureConnectorState *ccs) 68 { 69 g_assert(!spapr_ccs_find(spapr, ccs->drc_index)); 70 QTAILQ_INSERT_HEAD(&spapr->ccs_list, ccs, next); 71 } 72 73 static void spapr_ccs_remove(sPAPRMachineState *spapr, 74 sPAPRConfigureConnectorState *ccs) 75 { 76 QTAILQ_REMOVE(&spapr->ccs_list, ccs, next); 77 g_free(ccs); 78 } 79 80 void spapr_ccs_reset_hook(void *opaque) 81 { 82 sPAPRMachineState *spapr = opaque; 83 sPAPRConfigureConnectorState *ccs, *ccs_tmp; 84 85 QTAILQ_FOREACH_SAFE(ccs, &spapr->ccs_list, next, ccs_tmp) { 86 spapr_ccs_remove(spapr, ccs); 87 } 88 } 89 90 static void rtas_display_character(PowerPCCPU *cpu, sPAPRMachineState *spapr, 91 uint32_t token, uint32_t nargs, 92 target_ulong args, 93 uint32_t nret, target_ulong rets) 94 { 95 uint8_t c = rtas_ld(args, 0); 96 VIOsPAPRDevice *sdev = vty_lookup(spapr, 0); 97 98 if (!sdev) { 99 rtas_st(rets, 0, RTAS_OUT_HW_ERROR); 100 } else { 101 vty_putchars(sdev, &c, sizeof(c)); 102 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 103 } 104 } 105 106 static void rtas_power_off(PowerPCCPU *cpu, sPAPRMachineState *spapr, 107 uint32_t token, uint32_t nargs, target_ulong args, 108 uint32_t nret, target_ulong rets) 109 { 110 if (nargs != 2 || nret != 1) { 111 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 112 return; 113 } 114 qemu_system_shutdown_request(); 115 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 116 } 117 118 static void rtas_system_reboot(PowerPCCPU *cpu, sPAPRMachineState *spapr, 119 uint32_t token, uint32_t nargs, 120 target_ulong args, 121 uint32_t nret, target_ulong rets) 122 { 123 if (nargs != 0 || nret != 1) { 124 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 125 return; 126 } 127 qemu_system_reset_request(); 128 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 129 } 130 131 static void rtas_query_cpu_stopped_state(PowerPCCPU *cpu_, 132 sPAPRMachineState *spapr, 133 uint32_t token, uint32_t nargs, 134 target_ulong args, 135 uint32_t nret, target_ulong rets) 136 { 137 target_ulong id; 138 PowerPCCPU *cpu; 139 140 if (nargs != 1 || nret != 2) { 141 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 142 return; 143 } 144 145 id = rtas_ld(args, 0); 146 cpu = ppc_get_vcpu_by_dt_id(id); 147 if (cpu != NULL) { 148 if (CPU(cpu)->halted) { 149 rtas_st(rets, 1, 0); 150 } else { 151 rtas_st(rets, 1, 2); 152 } 153 154 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 155 return; 156 } 157 158 /* Didn't find a matching cpu */ 159 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 160 } 161 162 static void rtas_start_cpu(PowerPCCPU *cpu_, sPAPRMachineState *spapr, 163 uint32_t token, uint32_t nargs, 164 target_ulong args, 165 uint32_t nret, target_ulong rets) 166 { 167 target_ulong id, start, r3; 168 PowerPCCPU *cpu; 169 170 if (nargs != 3 || nret != 1) { 171 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 172 return; 173 } 174 175 id = rtas_ld(args, 0); 176 start = rtas_ld(args, 1); 177 r3 = rtas_ld(args, 2); 178 179 cpu = ppc_get_vcpu_by_dt_id(id); 180 if (cpu != NULL) { 181 CPUState *cs = CPU(cpu); 182 CPUPPCState *env = &cpu->env; 183 184 if (!cs->halted) { 185 rtas_st(rets, 0, RTAS_OUT_HW_ERROR); 186 return; 187 } 188 189 /* This will make sure qemu state is up to date with kvm, and 190 * mark it dirty so our changes get flushed back before the 191 * new cpu enters */ 192 kvm_cpu_synchronize_state(cs); 193 194 env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME); 195 env->nip = start; 196 env->gpr[3] = r3; 197 cs->halted = 0; 198 199 qemu_cpu_kick(cs); 200 201 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 202 return; 203 } 204 205 /* Didn't find a matching cpu */ 206 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 207 } 208 209 static void rtas_stop_self(PowerPCCPU *cpu, sPAPRMachineState *spapr, 210 uint32_t token, uint32_t nargs, 211 target_ulong args, 212 uint32_t nret, target_ulong rets) 213 { 214 CPUState *cs = CPU(cpu); 215 CPUPPCState *env = &cpu->env; 216 217 cs->halted = 1; 218 qemu_cpu_kick(cs); 219 /* 220 * While stopping a CPU, the guest calls H_CPPR which 221 * effectively disables interrupts on XICS level. 222 * However decrementer interrupts in TCG can still 223 * wake the CPU up so here we disable interrupts in MSR 224 * as well. 225 * As rtas_start_cpu() resets the whole MSR anyway, there is 226 * no need to bother with specific bits, we just clear it. 227 */ 228 env->msr = 0; 229 } 230 231 static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu, 232 sPAPRMachineState *spapr, 233 uint32_t token, uint32_t nargs, 234 target_ulong args, 235 uint32_t nret, target_ulong rets) 236 { 237 target_ulong parameter = rtas_ld(args, 0); 238 target_ulong buffer = rtas_ld(args, 1); 239 target_ulong length = rtas_ld(args, 2); 240 target_ulong ret = RTAS_OUT_SUCCESS; 241 242 switch (parameter) { 243 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: { 244 char *param_val = g_strdup_printf("MaxEntCap=%d," 245 "DesMem=%llu," 246 "DesProcs=%d," 247 "MaxPlatProcs=%d", 248 max_cpus, 249 current_machine->ram_size / M_BYTE, 250 smp_cpus, 251 max_cpus); 252 rtas_st_buffer(buffer, length, (uint8_t *)param_val, strlen(param_val)); 253 g_free(param_val); 254 break; 255 } 256 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: { 257 uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED; 258 259 rtas_st_buffer(buffer, length, ¶m_val, sizeof(param_val)); 260 break; 261 } 262 case RTAS_SYSPARM_UUID: 263 rtas_st_buffer(buffer, length, qemu_uuid, (qemu_uuid_set ? 16 : 0)); 264 break; 265 default: 266 ret = RTAS_OUT_NOT_SUPPORTED; 267 } 268 269 rtas_st(rets, 0, ret); 270 } 271 272 static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu, 273 sPAPRMachineState *spapr, 274 uint32_t token, uint32_t nargs, 275 target_ulong args, 276 uint32_t nret, target_ulong rets) 277 { 278 target_ulong parameter = rtas_ld(args, 0); 279 target_ulong ret = RTAS_OUT_NOT_SUPPORTED; 280 281 switch (parameter) { 282 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: 283 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: 284 case RTAS_SYSPARM_UUID: 285 ret = RTAS_OUT_NOT_AUTHORIZED; 286 break; 287 } 288 289 rtas_st(rets, 0, ret); 290 } 291 292 static void rtas_ibm_os_term(PowerPCCPU *cpu, 293 sPAPRMachineState *spapr, 294 uint32_t token, uint32_t nargs, 295 target_ulong args, 296 uint32_t nret, target_ulong rets) 297 { 298 target_ulong ret = 0; 299 300 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE, &error_abort); 301 302 rtas_st(rets, 0, ret); 303 } 304 305 static void rtas_set_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 306 uint32_t token, uint32_t nargs, 307 target_ulong args, uint32_t nret, 308 target_ulong rets) 309 { 310 int32_t power_domain; 311 312 if (nargs != 2 || nret != 2) { 313 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 314 return; 315 } 316 317 /* we currently only use a single, "live insert" powerdomain for 318 * hotplugged/dlpar'd resources, so the power is always live/full (100) 319 */ 320 power_domain = rtas_ld(args, 0); 321 if (power_domain != -1) { 322 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 323 return; 324 } 325 326 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 327 rtas_st(rets, 1, 100); 328 } 329 330 static void rtas_get_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 331 uint32_t token, uint32_t nargs, 332 target_ulong args, uint32_t nret, 333 target_ulong rets) 334 { 335 int32_t power_domain; 336 337 if (nargs != 1 || nret != 2) { 338 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 339 return; 340 } 341 342 /* we currently only use a single, "live insert" powerdomain for 343 * hotplugged/dlpar'd resources, so the power is always live/full (100) 344 */ 345 power_domain = rtas_ld(args, 0); 346 if (power_domain != -1) { 347 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 348 return; 349 } 350 351 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 352 rtas_st(rets, 1, 100); 353 } 354 355 static bool sensor_type_is_dr(uint32_t sensor_type) 356 { 357 switch (sensor_type) { 358 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 359 case RTAS_SENSOR_TYPE_DR: 360 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 361 return true; 362 } 363 364 return false; 365 } 366 367 static void rtas_set_indicator(PowerPCCPU *cpu, sPAPRMachineState *spapr, 368 uint32_t token, uint32_t nargs, 369 target_ulong args, uint32_t nret, 370 target_ulong rets) 371 { 372 uint32_t sensor_type; 373 uint32_t sensor_index; 374 uint32_t sensor_state; 375 sPAPRDRConnector *drc; 376 sPAPRDRConnectorClass *drck; 377 378 if (nargs != 3 || nret != 1) { 379 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 380 return; 381 } 382 383 sensor_type = rtas_ld(args, 0); 384 sensor_index = rtas_ld(args, 1); 385 sensor_state = rtas_ld(args, 2); 386 387 if (!sensor_type_is_dr(sensor_type)) { 388 goto out_unimplemented; 389 } 390 391 /* if this is a DR sensor we can assume sensor_index == drc_index */ 392 drc = spapr_dr_connector_by_index(sensor_index); 393 if (!drc) { 394 DPRINTF("rtas_set_indicator: invalid sensor/DRC index: %xh\n", 395 sensor_index); 396 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 397 return; 398 } 399 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 400 401 switch (sensor_type) { 402 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 403 /* if the guest is configuring a device attached to this 404 * DRC, we should reset the configuration state at this 405 * point since it may no longer be reliable (guest released 406 * device and needs to start over, or unplug occurred so 407 * the FDT is no longer valid) 408 */ 409 if (sensor_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { 410 sPAPRConfigureConnectorState *ccs = spapr_ccs_find(spapr, 411 sensor_index); 412 if (ccs) { 413 spapr_ccs_remove(spapr, ccs); 414 } 415 } 416 drck->set_isolation_state(drc, sensor_state); 417 break; 418 case RTAS_SENSOR_TYPE_DR: 419 drck->set_indicator_state(drc, sensor_state); 420 break; 421 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 422 drck->set_allocation_state(drc, sensor_state); 423 break; 424 default: 425 goto out_unimplemented; 426 } 427 428 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 429 return; 430 431 out_unimplemented: 432 /* currently only DR-related sensors are implemented */ 433 DPRINTF("rtas_set_indicator: sensor/indicator not implemented: %d\n", 434 sensor_type); 435 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 436 } 437 438 static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPRMachineState *spapr, 439 uint32_t token, uint32_t nargs, 440 target_ulong args, uint32_t nret, 441 target_ulong rets) 442 { 443 uint32_t sensor_type; 444 uint32_t sensor_index; 445 sPAPRDRConnector *drc; 446 sPAPRDRConnectorClass *drck; 447 uint32_t entity_sense; 448 449 if (nargs != 2 || nret != 2) { 450 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 451 return; 452 } 453 454 sensor_type = rtas_ld(args, 0); 455 sensor_index = rtas_ld(args, 1); 456 457 if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { 458 /* currently only DR-related sensors are implemented */ 459 DPRINTF("rtas_get_sensor_state: sensor/indicator not implemented: %d\n", 460 sensor_type); 461 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 462 return; 463 } 464 465 drc = spapr_dr_connector_by_index(sensor_index); 466 if (!drc) { 467 DPRINTF("rtas_get_sensor_state: invalid sensor/DRC index: %xh\n", 468 sensor_index); 469 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 470 return; 471 } 472 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 473 entity_sense = drck->entity_sense(drc); 474 475 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 476 rtas_st(rets, 1, entity_sense); 477 } 478 479 /* configure-connector work area offsets, int32_t units for field 480 * indexes, bytes for field offset/len values. 481 * 482 * as documented by PAPR+ v2.7, 13.5.3.5 483 */ 484 #define CC_IDX_NODE_NAME_OFFSET 2 485 #define CC_IDX_PROP_NAME_OFFSET 2 486 #define CC_IDX_PROP_LEN 3 487 #define CC_IDX_PROP_DATA_OFFSET 4 488 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4) 489 #define CC_WA_LEN 4096 490 491 static void rtas_ibm_configure_connector(PowerPCCPU *cpu, 492 sPAPRMachineState *spapr, 493 uint32_t token, uint32_t nargs, 494 target_ulong args, uint32_t nret, 495 target_ulong rets) 496 { 497 uint64_t wa_addr; 498 uint64_t wa_offset; 499 uint32_t drc_index; 500 sPAPRDRConnector *drc; 501 sPAPRDRConnectorClass *drck; 502 sPAPRConfigureConnectorState *ccs; 503 sPAPRDRCCResponse resp = SPAPR_DR_CC_RESPONSE_CONTINUE; 504 int rc; 505 const void *fdt; 506 507 if (nargs != 2 || nret != 1) { 508 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 509 return; 510 } 511 512 wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0); 513 514 drc_index = rtas_ld(wa_addr, 0); 515 drc = spapr_dr_connector_by_index(drc_index); 516 if (!drc) { 517 DPRINTF("rtas_ibm_configure_connector: invalid DRC index: %xh\n", 518 drc_index); 519 rc = RTAS_OUT_PARAM_ERROR; 520 goto out; 521 } 522 523 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 524 fdt = drck->get_fdt(drc, NULL); 525 if (!fdt) { 526 DPRINTF("rtas_ibm_configure_connector: Missing FDT for DRC index: %xh\n", 527 drc_index); 528 rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; 529 goto out; 530 } 531 532 ccs = spapr_ccs_find(spapr, drc_index); 533 if (!ccs) { 534 ccs = g_new0(sPAPRConfigureConnectorState, 1); 535 (void)drck->get_fdt(drc, &ccs->fdt_offset); 536 ccs->drc_index = drc_index; 537 spapr_ccs_add(spapr, ccs); 538 } 539 540 do { 541 uint32_t tag; 542 const char *name; 543 const struct fdt_property *prop; 544 int fdt_offset_next, prop_len; 545 546 tag = fdt_next_tag(fdt, ccs->fdt_offset, &fdt_offset_next); 547 548 switch (tag) { 549 case FDT_BEGIN_NODE: 550 ccs->fdt_depth++; 551 name = fdt_get_name(fdt, ccs->fdt_offset, NULL); 552 553 /* provide the name of the next OF node */ 554 wa_offset = CC_VAL_DATA_OFFSET; 555 rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset); 556 rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset, 557 (uint8_t *)name, strlen(name) + 1); 558 resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD; 559 break; 560 case FDT_END_NODE: 561 ccs->fdt_depth--; 562 if (ccs->fdt_depth == 0) { 563 /* done sending the device tree, don't need to track 564 * the state anymore 565 */ 566 drck->set_configured(drc); 567 spapr_ccs_remove(spapr, ccs); 568 ccs = NULL; 569 resp = SPAPR_DR_CC_RESPONSE_SUCCESS; 570 } else { 571 resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; 572 } 573 break; 574 case FDT_PROP: 575 prop = fdt_get_property_by_offset(fdt, ccs->fdt_offset, 576 &prop_len); 577 name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); 578 579 /* provide the name of the next OF property */ 580 wa_offset = CC_VAL_DATA_OFFSET; 581 rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset); 582 rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset, 583 (uint8_t *)name, strlen(name) + 1); 584 585 /* provide the length and value of the OF property. data gets 586 * placed immediately after NULL terminator of the OF property's 587 * name string 588 */ 589 wa_offset += strlen(name) + 1, 590 rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len); 591 rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset); 592 rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset, 593 (uint8_t *)((struct fdt_property *)prop)->data, 594 prop_len); 595 resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY; 596 break; 597 case FDT_END: 598 resp = SPAPR_DR_CC_RESPONSE_ERROR; 599 default: 600 /* keep seeking for an actionable tag */ 601 break; 602 } 603 if (ccs) { 604 ccs->fdt_offset = fdt_offset_next; 605 } 606 } while (resp == SPAPR_DR_CC_RESPONSE_CONTINUE); 607 608 rc = resp; 609 out: 610 rtas_st(rets, 0, rc); 611 } 612 613 static struct rtas_call { 614 const char *name; 615 spapr_rtas_fn fn; 616 } rtas_table[RTAS_TOKEN_MAX - RTAS_TOKEN_BASE]; 617 618 target_ulong spapr_rtas_call(PowerPCCPU *cpu, sPAPRMachineState *spapr, 619 uint32_t token, uint32_t nargs, target_ulong args, 620 uint32_t nret, target_ulong rets) 621 { 622 if ((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)) { 623 struct rtas_call *call = rtas_table + (token - RTAS_TOKEN_BASE); 624 625 if (call->fn) { 626 call->fn(cpu, spapr, token, nargs, args, nret, rets); 627 return H_SUCCESS; 628 } 629 } 630 631 /* HACK: Some Linux early debug code uses RTAS display-character, 632 * but assumes the token value is 0xa (which it is on some real 633 * machines) without looking it up in the device tree. This 634 * special case makes this work */ 635 if (token == 0xa) { 636 rtas_display_character(cpu, spapr, 0xa, nargs, args, nret, rets); 637 return H_SUCCESS; 638 } 639 640 hcall_dprintf("Unknown RTAS token 0x%x\n", token); 641 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 642 return H_PARAMETER; 643 } 644 645 void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn) 646 { 647 if (!((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX))) { 648 fprintf(stderr, "RTAS invalid token 0x%x\n", token); 649 exit(1); 650 } 651 652 token -= RTAS_TOKEN_BASE; 653 if (rtas_table[token].name) { 654 fprintf(stderr, "RTAS call \"%s\" is registered already as 0x%x\n", 655 rtas_table[token].name, token); 656 exit(1); 657 } 658 659 rtas_table[token].name = name; 660 rtas_table[token].fn = fn; 661 } 662 663 int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr, 664 hwaddr rtas_size) 665 { 666 int ret; 667 int i; 668 uint32_t lrdr_capacity[5]; 669 MachineState *machine = MACHINE(qdev_get_machine()); 670 671 ret = fdt_add_mem_rsv(fdt, rtas_addr, rtas_size); 672 if (ret < 0) { 673 fprintf(stderr, "Couldn't add RTAS reserve entry: %s\n", 674 fdt_strerror(ret)); 675 return ret; 676 } 677 678 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-base", 679 rtas_addr); 680 if (ret < 0) { 681 fprintf(stderr, "Couldn't add linux,rtas-base property: %s\n", 682 fdt_strerror(ret)); 683 return ret; 684 } 685 686 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-entry", 687 rtas_addr); 688 if (ret < 0) { 689 fprintf(stderr, "Couldn't add linux,rtas-entry property: %s\n", 690 fdt_strerror(ret)); 691 return ret; 692 } 693 694 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-size", 695 rtas_size); 696 if (ret < 0) { 697 fprintf(stderr, "Couldn't add rtas-size property: %s\n", 698 fdt_strerror(ret)); 699 return ret; 700 } 701 702 for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) { 703 struct rtas_call *call = &rtas_table[i]; 704 705 if (!call->name) { 706 continue; 707 } 708 709 ret = qemu_fdt_setprop_cell(fdt, "/rtas", call->name, 710 i + RTAS_TOKEN_BASE); 711 if (ret < 0) { 712 fprintf(stderr, "Couldn't add rtas token for %s: %s\n", 713 call->name, fdt_strerror(ret)); 714 return ret; 715 } 716 717 } 718 719 lrdr_capacity[0] = cpu_to_be32(((uint64_t)machine->maxram_size) >> 32); 720 lrdr_capacity[1] = cpu_to_be32(machine->maxram_size & 0xffffffff); 721 lrdr_capacity[2] = 0; 722 lrdr_capacity[3] = cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE); 723 lrdr_capacity[4] = cpu_to_be32(max_cpus/smp_threads); 724 ret = qemu_fdt_setprop(fdt, "/rtas", "ibm,lrdr-capacity", lrdr_capacity, 725 sizeof(lrdr_capacity)); 726 if (ret < 0) { 727 fprintf(stderr, "Couldn't add ibm,lrdr-capacity rtas property\n"); 728 return ret; 729 } 730 731 return 0; 732 } 733 734 static void core_rtas_register_types(void) 735 { 736 spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character", 737 rtas_display_character); 738 spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off); 739 spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot", 740 rtas_system_reboot); 741 spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state", 742 rtas_query_cpu_stopped_state); 743 spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu); 744 spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self); 745 spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER, 746 "ibm,get-system-parameter", 747 rtas_ibm_get_system_parameter); 748 spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER, 749 "ibm,set-system-parameter", 750 rtas_ibm_set_system_parameter); 751 spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term", 752 rtas_ibm_os_term); 753 spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level", 754 rtas_set_power_level); 755 spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", 756 rtas_get_power_level); 757 spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", 758 rtas_set_indicator); 759 spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", 760 rtas_get_sensor_state); 761 spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector", 762 rtas_ibm_configure_connector); 763 } 764 765 type_init(core_rtas_register_types) 766