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 "qemu/osdep.h" 28 #include "cpu.h" 29 #include "sysemu/sysemu.h" 30 #include "sysemu/char.h" 31 #include "hw/qdev.h" 32 #include "sysemu/device_tree.h" 33 #include "sysemu/cpus.h" 34 35 #include "hw/ppc/spapr.h" 36 #include "hw/ppc/spapr_vio.h" 37 #include "qapi-event.h" 38 #include "hw/boards.h" 39 40 #include <libfdt.h> 41 #include "hw/ppc/spapr_drc.h" 42 43 /* #define DEBUG_SPAPR */ 44 45 #ifdef DEBUG_SPAPR 46 #define DPRINTF(fmt, ...) \ 47 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 48 #else 49 #define DPRINTF(fmt, ...) \ 50 do { } while (0) 51 #endif 52 53 static sPAPRConfigureConnectorState *spapr_ccs_find(sPAPRMachineState *spapr, 54 uint32_t drc_index) 55 { 56 sPAPRConfigureConnectorState *ccs = NULL; 57 58 QTAILQ_FOREACH(ccs, &spapr->ccs_list, next) { 59 if (ccs->drc_index == drc_index) { 60 break; 61 } 62 } 63 64 return ccs; 65 } 66 67 static void spapr_ccs_add(sPAPRMachineState *spapr, 68 sPAPRConfigureConnectorState *ccs) 69 { 70 g_assert(!spapr_ccs_find(spapr, ccs->drc_index)); 71 QTAILQ_INSERT_HEAD(&spapr->ccs_list, ccs, next); 72 } 73 74 static void spapr_ccs_remove(sPAPRMachineState *spapr, 75 sPAPRConfigureConnectorState *ccs) 76 { 77 QTAILQ_REMOVE(&spapr->ccs_list, ccs, next); 78 g_free(ccs); 79 } 80 81 void spapr_ccs_reset_hook(void *opaque) 82 { 83 sPAPRMachineState *spapr = opaque; 84 sPAPRConfigureConnectorState *ccs, *ccs_tmp; 85 86 QTAILQ_FOREACH_SAFE(ccs, &spapr->ccs_list, next, ccs_tmp) { 87 spapr_ccs_remove(spapr, ccs); 88 } 89 } 90 91 static void rtas_display_character(PowerPCCPU *cpu, sPAPRMachineState *spapr, 92 uint32_t token, uint32_t nargs, 93 target_ulong args, 94 uint32_t nret, target_ulong rets) 95 { 96 uint8_t c = rtas_ld(args, 0); 97 VIOsPAPRDevice *sdev = vty_lookup(spapr, 0); 98 99 if (!sdev) { 100 rtas_st(rets, 0, RTAS_OUT_HW_ERROR); 101 } else { 102 vty_putchars(sdev, &c, sizeof(c)); 103 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 104 } 105 } 106 107 static void rtas_power_off(PowerPCCPU *cpu, sPAPRMachineState *spapr, 108 uint32_t token, uint32_t nargs, target_ulong args, 109 uint32_t nret, target_ulong rets) 110 { 111 if (nargs != 2 || nret != 1) { 112 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 113 return; 114 } 115 qemu_system_shutdown_request(); 116 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 117 } 118 119 static void rtas_system_reboot(PowerPCCPU *cpu, sPAPRMachineState *spapr, 120 uint32_t token, uint32_t nargs, 121 target_ulong args, 122 uint32_t nret, target_ulong rets) 123 { 124 if (nargs != 0 || nret != 1) { 125 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 126 return; 127 } 128 qemu_system_reset_request(); 129 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 130 } 131 132 static void rtas_query_cpu_stopped_state(PowerPCCPU *cpu_, 133 sPAPRMachineState *spapr, 134 uint32_t token, uint32_t nargs, 135 target_ulong args, 136 uint32_t nret, target_ulong rets) 137 { 138 target_ulong id; 139 PowerPCCPU *cpu; 140 141 if (nargs != 1 || nret != 2) { 142 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 143 return; 144 } 145 146 id = rtas_ld(args, 0); 147 cpu = ppc_get_vcpu_by_dt_id(id); 148 if (cpu != NULL) { 149 if (CPU(cpu)->halted) { 150 rtas_st(rets, 1, 0); 151 } else { 152 rtas_st(rets, 1, 2); 153 } 154 155 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 156 return; 157 } 158 159 /* Didn't find a matching cpu */ 160 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 161 } 162 163 static void rtas_start_cpu(PowerPCCPU *cpu_, sPAPRMachineState *spapr, 164 uint32_t token, uint32_t nargs, 165 target_ulong args, 166 uint32_t nret, target_ulong rets) 167 { 168 target_ulong id, start, r3; 169 PowerPCCPU *cpu; 170 171 if (nargs != 3 || nret != 1) { 172 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 173 return; 174 } 175 176 id = rtas_ld(args, 0); 177 start = rtas_ld(args, 1); 178 r3 = rtas_ld(args, 2); 179 180 cpu = ppc_get_vcpu_by_dt_id(id); 181 if (cpu != NULL) { 182 CPUState *cs = CPU(cpu); 183 CPUPPCState *env = &cpu->env; 184 185 if (!cs->halted) { 186 rtas_st(rets, 0, RTAS_OUT_HW_ERROR); 187 return; 188 } 189 190 /* This will make sure qemu state is up to date with kvm, and 191 * mark it dirty so our changes get flushed back before the 192 * new cpu enters */ 193 kvm_cpu_synchronize_state(cs); 194 195 env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME); 196 env->nip = start; 197 env->gpr[3] = r3; 198 cs->halted = 0; 199 200 qemu_cpu_kick(cs); 201 202 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 203 return; 204 } 205 206 /* Didn't find a matching cpu */ 207 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 208 } 209 210 static void rtas_stop_self(PowerPCCPU *cpu, sPAPRMachineState *spapr, 211 uint32_t token, uint32_t nargs, 212 target_ulong args, 213 uint32_t nret, target_ulong rets) 214 { 215 CPUState *cs = CPU(cpu); 216 CPUPPCState *env = &cpu->env; 217 218 cs->halted = 1; 219 qemu_cpu_kick(cs); 220 /* 221 * While stopping a CPU, the guest calls H_CPPR which 222 * effectively disables interrupts on XICS level. 223 * However decrementer interrupts in TCG can still 224 * wake the CPU up so here we disable interrupts in MSR 225 * as well. 226 * As rtas_start_cpu() resets the whole MSR anyway, there is 227 * no need to bother with specific bits, we just clear it. 228 */ 229 env->msr = 0; 230 } 231 232 static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu, 233 sPAPRMachineState *spapr, 234 uint32_t token, uint32_t nargs, 235 target_ulong args, 236 uint32_t nret, target_ulong rets) 237 { 238 target_ulong parameter = rtas_ld(args, 0); 239 target_ulong buffer = rtas_ld(args, 1); 240 target_ulong length = rtas_ld(args, 2); 241 target_ulong ret = RTAS_OUT_SUCCESS; 242 243 switch (parameter) { 244 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: { 245 char *param_val = g_strdup_printf("MaxEntCap=%d," 246 "DesMem=%llu," 247 "DesProcs=%d," 248 "MaxPlatProcs=%d", 249 max_cpus, 250 current_machine->ram_size / M_BYTE, 251 smp_cpus, 252 max_cpus); 253 rtas_st_buffer(buffer, length, (uint8_t *)param_val, strlen(param_val)); 254 g_free(param_val); 255 break; 256 } 257 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: { 258 uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED; 259 260 rtas_st_buffer(buffer, length, ¶m_val, sizeof(param_val)); 261 break; 262 } 263 case RTAS_SYSPARM_UUID: 264 rtas_st_buffer(buffer, length, qemu_uuid, (qemu_uuid_set ? 16 : 0)); 265 break; 266 default: 267 ret = RTAS_OUT_NOT_SUPPORTED; 268 } 269 270 rtas_st(rets, 0, ret); 271 } 272 273 static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu, 274 sPAPRMachineState *spapr, 275 uint32_t token, uint32_t nargs, 276 target_ulong args, 277 uint32_t nret, target_ulong rets) 278 { 279 target_ulong parameter = rtas_ld(args, 0); 280 target_ulong ret = RTAS_OUT_NOT_SUPPORTED; 281 282 switch (parameter) { 283 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: 284 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: 285 case RTAS_SYSPARM_UUID: 286 ret = RTAS_OUT_NOT_AUTHORIZED; 287 break; 288 } 289 290 rtas_st(rets, 0, ret); 291 } 292 293 static void rtas_ibm_os_term(PowerPCCPU *cpu, 294 sPAPRMachineState *spapr, 295 uint32_t token, uint32_t nargs, 296 target_ulong args, 297 uint32_t nret, target_ulong rets) 298 { 299 target_ulong ret = 0; 300 301 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE, &error_abort); 302 303 rtas_st(rets, 0, ret); 304 } 305 306 static void rtas_set_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 307 uint32_t token, uint32_t nargs, 308 target_ulong args, uint32_t nret, 309 target_ulong rets) 310 { 311 int32_t power_domain; 312 313 if (nargs != 2 || nret != 2) { 314 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 315 return; 316 } 317 318 /* we currently only use a single, "live insert" powerdomain for 319 * hotplugged/dlpar'd resources, so the power is always live/full (100) 320 */ 321 power_domain = rtas_ld(args, 0); 322 if (power_domain != -1) { 323 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 324 return; 325 } 326 327 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 328 rtas_st(rets, 1, 100); 329 } 330 331 static void rtas_get_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 332 uint32_t token, uint32_t nargs, 333 target_ulong args, uint32_t nret, 334 target_ulong rets) 335 { 336 int32_t power_domain; 337 338 if (nargs != 1 || nret != 2) { 339 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 340 return; 341 } 342 343 /* we currently only use a single, "live insert" powerdomain for 344 * hotplugged/dlpar'd resources, so the power is always live/full (100) 345 */ 346 power_domain = rtas_ld(args, 0); 347 if (power_domain != -1) { 348 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 349 return; 350 } 351 352 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 353 rtas_st(rets, 1, 100); 354 } 355 356 static bool sensor_type_is_dr(uint32_t sensor_type) 357 { 358 switch (sensor_type) { 359 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 360 case RTAS_SENSOR_TYPE_DR: 361 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 362 return true; 363 } 364 365 return false; 366 } 367 368 static void rtas_set_indicator(PowerPCCPU *cpu, sPAPRMachineState *spapr, 369 uint32_t token, uint32_t nargs, 370 target_ulong args, uint32_t nret, 371 target_ulong rets) 372 { 373 uint32_t sensor_type; 374 uint32_t sensor_index; 375 uint32_t sensor_state; 376 uint32_t ret = RTAS_OUT_SUCCESS; 377 sPAPRDRConnector *drc; 378 sPAPRDRConnectorClass *drck; 379 380 if (nargs != 3 || nret != 1) { 381 ret = RTAS_OUT_PARAM_ERROR; 382 goto out; 383 } 384 385 sensor_type = rtas_ld(args, 0); 386 sensor_index = rtas_ld(args, 1); 387 sensor_state = rtas_ld(args, 2); 388 389 if (!sensor_type_is_dr(sensor_type)) { 390 goto out_unimplemented; 391 } 392 393 /* if this is a DR sensor we can assume sensor_index == drc_index */ 394 drc = spapr_dr_connector_by_index(sensor_index); 395 if (!drc) { 396 DPRINTF("rtas_set_indicator: invalid sensor/DRC index: %xh\n", 397 sensor_index); 398 ret = RTAS_OUT_PARAM_ERROR; 399 goto out; 400 } 401 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 402 403 switch (sensor_type) { 404 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 405 /* if the guest is configuring a device attached to this 406 * DRC, we should reset the configuration state at this 407 * point since it may no longer be reliable (guest released 408 * device and needs to start over, or unplug occurred so 409 * the FDT is no longer valid) 410 */ 411 if (sensor_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { 412 sPAPRConfigureConnectorState *ccs = spapr_ccs_find(spapr, 413 sensor_index); 414 if (ccs) { 415 spapr_ccs_remove(spapr, ccs); 416 } 417 } 418 ret = drck->set_isolation_state(drc, sensor_state); 419 break; 420 case RTAS_SENSOR_TYPE_DR: 421 ret = drck->set_indicator_state(drc, sensor_state); 422 break; 423 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 424 ret = drck->set_allocation_state(drc, sensor_state); 425 break; 426 default: 427 goto out_unimplemented; 428 } 429 430 out: 431 rtas_st(rets, 0, ret); 432 return; 433 434 out_unimplemented: 435 /* currently only DR-related sensors are implemented */ 436 DPRINTF("rtas_set_indicator: sensor/indicator not implemented: %d\n", 437 sensor_type); 438 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 439 } 440 441 static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPRMachineState *spapr, 442 uint32_t token, uint32_t nargs, 443 target_ulong args, uint32_t nret, 444 target_ulong rets) 445 { 446 uint32_t sensor_type; 447 uint32_t sensor_index; 448 uint32_t sensor_state = 0; 449 sPAPRDRConnector *drc; 450 sPAPRDRConnectorClass *drck; 451 uint32_t ret = RTAS_OUT_SUCCESS; 452 453 if (nargs != 2 || nret != 2) { 454 ret = RTAS_OUT_PARAM_ERROR; 455 goto out; 456 } 457 458 sensor_type = rtas_ld(args, 0); 459 sensor_index = rtas_ld(args, 1); 460 461 if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { 462 /* currently only DR-related sensors are implemented */ 463 DPRINTF("rtas_get_sensor_state: sensor/indicator not implemented: %d\n", 464 sensor_type); 465 ret = RTAS_OUT_NOT_SUPPORTED; 466 goto out; 467 } 468 469 drc = spapr_dr_connector_by_index(sensor_index); 470 if (!drc) { 471 DPRINTF("rtas_get_sensor_state: invalid sensor/DRC index: %xh\n", 472 sensor_index); 473 ret = RTAS_OUT_PARAM_ERROR; 474 goto out; 475 } 476 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 477 ret = drck->entity_sense(drc, &sensor_state); 478 479 out: 480 rtas_st(rets, 0, ret); 481 rtas_st(rets, 1, sensor_state); 482 } 483 484 /* configure-connector work area offsets, int32_t units for field 485 * indexes, bytes for field offset/len values. 486 * 487 * as documented by PAPR+ v2.7, 13.5.3.5 488 */ 489 #define CC_IDX_NODE_NAME_OFFSET 2 490 #define CC_IDX_PROP_NAME_OFFSET 2 491 #define CC_IDX_PROP_LEN 3 492 #define CC_IDX_PROP_DATA_OFFSET 4 493 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4) 494 #define CC_WA_LEN 4096 495 496 static void rtas_ibm_configure_connector(PowerPCCPU *cpu, 497 sPAPRMachineState *spapr, 498 uint32_t token, uint32_t nargs, 499 target_ulong args, uint32_t nret, 500 target_ulong rets) 501 { 502 uint64_t wa_addr; 503 uint64_t wa_offset; 504 uint32_t drc_index; 505 sPAPRDRConnector *drc; 506 sPAPRDRConnectorClass *drck; 507 sPAPRConfigureConnectorState *ccs; 508 sPAPRDRCCResponse resp = SPAPR_DR_CC_RESPONSE_CONTINUE; 509 int rc; 510 const void *fdt; 511 512 if (nargs != 2 || nret != 1) { 513 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 514 return; 515 } 516 517 wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0); 518 519 drc_index = rtas_ld(wa_addr, 0); 520 drc = spapr_dr_connector_by_index(drc_index); 521 if (!drc) { 522 DPRINTF("rtas_ibm_configure_connector: invalid DRC index: %xh\n", 523 drc_index); 524 rc = RTAS_OUT_PARAM_ERROR; 525 goto out; 526 } 527 528 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 529 fdt = drck->get_fdt(drc, NULL); 530 if (!fdt) { 531 DPRINTF("rtas_ibm_configure_connector: Missing FDT for DRC index: %xh\n", 532 drc_index); 533 rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; 534 goto out; 535 } 536 537 ccs = spapr_ccs_find(spapr, drc_index); 538 if (!ccs) { 539 ccs = g_new0(sPAPRConfigureConnectorState, 1); 540 (void)drck->get_fdt(drc, &ccs->fdt_offset); 541 ccs->drc_index = drc_index; 542 spapr_ccs_add(spapr, ccs); 543 } 544 545 do { 546 uint32_t tag; 547 const char *name; 548 const struct fdt_property *prop; 549 int fdt_offset_next, prop_len; 550 551 tag = fdt_next_tag(fdt, ccs->fdt_offset, &fdt_offset_next); 552 553 switch (tag) { 554 case FDT_BEGIN_NODE: 555 ccs->fdt_depth++; 556 name = fdt_get_name(fdt, ccs->fdt_offset, NULL); 557 558 /* provide the name of the next OF node */ 559 wa_offset = CC_VAL_DATA_OFFSET; 560 rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset); 561 rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset, 562 (uint8_t *)name, strlen(name) + 1); 563 resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD; 564 break; 565 case FDT_END_NODE: 566 ccs->fdt_depth--; 567 if (ccs->fdt_depth == 0) { 568 /* done sending the device tree, don't need to track 569 * the state anymore 570 */ 571 drck->set_configured(drc); 572 spapr_ccs_remove(spapr, ccs); 573 ccs = NULL; 574 resp = SPAPR_DR_CC_RESPONSE_SUCCESS; 575 } else { 576 resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; 577 } 578 break; 579 case FDT_PROP: 580 prop = fdt_get_property_by_offset(fdt, ccs->fdt_offset, 581 &prop_len); 582 name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); 583 584 /* provide the name of the next OF property */ 585 wa_offset = CC_VAL_DATA_OFFSET; 586 rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset); 587 rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset, 588 (uint8_t *)name, strlen(name) + 1); 589 590 /* provide the length and value of the OF property. data gets 591 * placed immediately after NULL terminator of the OF property's 592 * name string 593 */ 594 wa_offset += strlen(name) + 1, 595 rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len); 596 rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset); 597 rtas_st_buffer_direct(wa_addr + wa_offset, CC_WA_LEN - wa_offset, 598 (uint8_t *)((struct fdt_property *)prop)->data, 599 prop_len); 600 resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY; 601 break; 602 case FDT_END: 603 resp = SPAPR_DR_CC_RESPONSE_ERROR; 604 default: 605 /* keep seeking for an actionable tag */ 606 break; 607 } 608 if (ccs) { 609 ccs->fdt_offset = fdt_offset_next; 610 } 611 } while (resp == SPAPR_DR_CC_RESPONSE_CONTINUE); 612 613 rc = resp; 614 out: 615 rtas_st(rets, 0, rc); 616 } 617 618 static struct rtas_call { 619 const char *name; 620 spapr_rtas_fn fn; 621 } rtas_table[RTAS_TOKEN_MAX - RTAS_TOKEN_BASE]; 622 623 target_ulong spapr_rtas_call(PowerPCCPU *cpu, sPAPRMachineState *spapr, 624 uint32_t token, uint32_t nargs, target_ulong args, 625 uint32_t nret, target_ulong rets) 626 { 627 if ((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)) { 628 struct rtas_call *call = rtas_table + (token - RTAS_TOKEN_BASE); 629 630 if (call->fn) { 631 call->fn(cpu, spapr, token, nargs, args, nret, rets); 632 return H_SUCCESS; 633 } 634 } 635 636 /* HACK: Some Linux early debug code uses RTAS display-character, 637 * but assumes the token value is 0xa (which it is on some real 638 * machines) without looking it up in the device tree. This 639 * special case makes this work */ 640 if (token == 0xa) { 641 rtas_display_character(cpu, spapr, 0xa, nargs, args, nret, rets); 642 return H_SUCCESS; 643 } 644 645 hcall_dprintf("Unknown RTAS token 0x%x\n", token); 646 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 647 return H_PARAMETER; 648 } 649 650 void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn) 651 { 652 if (!((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX))) { 653 fprintf(stderr, "RTAS invalid token 0x%x\n", token); 654 exit(1); 655 } 656 657 token -= RTAS_TOKEN_BASE; 658 if (rtas_table[token].name) { 659 fprintf(stderr, "RTAS call \"%s\" is registered already as 0x%x\n", 660 rtas_table[token].name, token); 661 exit(1); 662 } 663 664 rtas_table[token].name = name; 665 rtas_table[token].fn = fn; 666 } 667 668 int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr, 669 hwaddr rtas_size) 670 { 671 int ret; 672 int i; 673 uint32_t lrdr_capacity[5]; 674 MachineState *machine = MACHINE(qdev_get_machine()); 675 676 ret = fdt_add_mem_rsv(fdt, rtas_addr, rtas_size); 677 if (ret < 0) { 678 fprintf(stderr, "Couldn't add RTAS reserve entry: %s\n", 679 fdt_strerror(ret)); 680 return ret; 681 } 682 683 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-base", 684 rtas_addr); 685 if (ret < 0) { 686 fprintf(stderr, "Couldn't add linux,rtas-base property: %s\n", 687 fdt_strerror(ret)); 688 return ret; 689 } 690 691 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-entry", 692 rtas_addr); 693 if (ret < 0) { 694 fprintf(stderr, "Couldn't add linux,rtas-entry property: %s\n", 695 fdt_strerror(ret)); 696 return ret; 697 } 698 699 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-size", 700 rtas_size); 701 if (ret < 0) { 702 fprintf(stderr, "Couldn't add rtas-size property: %s\n", 703 fdt_strerror(ret)); 704 return ret; 705 } 706 707 for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) { 708 struct rtas_call *call = &rtas_table[i]; 709 710 if (!call->name) { 711 continue; 712 } 713 714 ret = qemu_fdt_setprop_cell(fdt, "/rtas", call->name, 715 i + RTAS_TOKEN_BASE); 716 if (ret < 0) { 717 fprintf(stderr, "Couldn't add rtas token for %s: %s\n", 718 call->name, fdt_strerror(ret)); 719 return ret; 720 } 721 722 } 723 724 lrdr_capacity[0] = cpu_to_be32(((uint64_t)machine->maxram_size) >> 32); 725 lrdr_capacity[1] = cpu_to_be32(machine->maxram_size & 0xffffffff); 726 lrdr_capacity[2] = 0; 727 lrdr_capacity[3] = cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE); 728 lrdr_capacity[4] = cpu_to_be32(max_cpus/smp_threads); 729 ret = qemu_fdt_setprop(fdt, "/rtas", "ibm,lrdr-capacity", lrdr_capacity, 730 sizeof(lrdr_capacity)); 731 if (ret < 0) { 732 fprintf(stderr, "Couldn't add ibm,lrdr-capacity rtas property\n"); 733 return ret; 734 } 735 736 return 0; 737 } 738 739 static void core_rtas_register_types(void) 740 { 741 spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character", 742 rtas_display_character); 743 spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off); 744 spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot", 745 rtas_system_reboot); 746 spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state", 747 rtas_query_cpu_stopped_state); 748 spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu); 749 spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self); 750 spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER, 751 "ibm,get-system-parameter", 752 rtas_ibm_get_system_parameter); 753 spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER, 754 "ibm,set-system-parameter", 755 rtas_ibm_set_system_parameter); 756 spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term", 757 rtas_ibm_os_term); 758 spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level", 759 rtas_set_power_level); 760 spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", 761 rtas_get_power_level); 762 spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", 763 rtas_set_indicator); 764 spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", 765 rtas_get_sensor_state); 766 spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector", 767 rtas_ibm_configure_connector); 768 } 769 770 type_init(core_rtas_register_types) 771