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 inline int sysparm_st(target_ulong addr, target_ulong len, 233 const void *val, uint16_t vallen) 234 { 235 hwaddr phys = ppc64_phys_to_real(addr); 236 237 if (len < 2) { 238 return RTAS_OUT_SYSPARM_PARAM_ERROR; 239 } 240 stw_be_phys(&address_space_memory, phys, vallen); 241 cpu_physical_memory_write(phys + 2, val, MIN(len - 2, vallen)); 242 return RTAS_OUT_SUCCESS; 243 } 244 245 static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu, 246 sPAPRMachineState *spapr, 247 uint32_t token, uint32_t nargs, 248 target_ulong args, 249 uint32_t nret, target_ulong rets) 250 { 251 target_ulong parameter = rtas_ld(args, 0); 252 target_ulong buffer = rtas_ld(args, 1); 253 target_ulong length = rtas_ld(args, 2); 254 target_ulong ret; 255 256 switch (parameter) { 257 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: { 258 char *param_val = g_strdup_printf("MaxEntCap=%d," 259 "DesMem=%llu," 260 "DesProcs=%d," 261 "MaxPlatProcs=%d", 262 max_cpus, 263 current_machine->ram_size / M_BYTE, 264 smp_cpus, 265 max_cpus); 266 ret = sysparm_st(buffer, length, param_val, strlen(param_val) + 1); 267 g_free(param_val); 268 break; 269 } 270 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: { 271 uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED; 272 273 ret = sysparm_st(buffer, length, ¶m_val, sizeof(param_val)); 274 break; 275 } 276 case RTAS_SYSPARM_UUID: 277 ret = sysparm_st(buffer, length, qemu_uuid, (qemu_uuid_set ? 16 : 0)); 278 break; 279 default: 280 ret = RTAS_OUT_NOT_SUPPORTED; 281 } 282 283 rtas_st(rets, 0, ret); 284 } 285 286 static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu, 287 sPAPRMachineState *spapr, 288 uint32_t token, uint32_t nargs, 289 target_ulong args, 290 uint32_t nret, target_ulong rets) 291 { 292 target_ulong parameter = rtas_ld(args, 0); 293 target_ulong ret = RTAS_OUT_NOT_SUPPORTED; 294 295 switch (parameter) { 296 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: 297 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: 298 case RTAS_SYSPARM_UUID: 299 ret = RTAS_OUT_NOT_AUTHORIZED; 300 break; 301 } 302 303 rtas_st(rets, 0, ret); 304 } 305 306 static void rtas_ibm_os_term(PowerPCCPU *cpu, 307 sPAPRMachineState *spapr, 308 uint32_t token, uint32_t nargs, 309 target_ulong args, 310 uint32_t nret, target_ulong rets) 311 { 312 target_ulong ret = 0; 313 314 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE, &error_abort); 315 316 rtas_st(rets, 0, ret); 317 } 318 319 static void rtas_set_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 320 uint32_t token, uint32_t nargs, 321 target_ulong args, uint32_t nret, 322 target_ulong rets) 323 { 324 int32_t power_domain; 325 326 if (nargs != 2 || nret != 2) { 327 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 328 return; 329 } 330 331 /* we currently only use a single, "live insert" powerdomain for 332 * hotplugged/dlpar'd resources, so the power is always live/full (100) 333 */ 334 power_domain = rtas_ld(args, 0); 335 if (power_domain != -1) { 336 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 337 return; 338 } 339 340 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 341 rtas_st(rets, 1, 100); 342 } 343 344 static void rtas_get_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 345 uint32_t token, uint32_t nargs, 346 target_ulong args, uint32_t nret, 347 target_ulong rets) 348 { 349 int32_t power_domain; 350 351 if (nargs != 1 || nret != 2) { 352 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 353 return; 354 } 355 356 /* we currently only use a single, "live insert" powerdomain for 357 * hotplugged/dlpar'd resources, so the power is always live/full (100) 358 */ 359 power_domain = rtas_ld(args, 0); 360 if (power_domain != -1) { 361 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 362 return; 363 } 364 365 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 366 rtas_st(rets, 1, 100); 367 } 368 369 static bool sensor_type_is_dr(uint32_t sensor_type) 370 { 371 switch (sensor_type) { 372 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 373 case RTAS_SENSOR_TYPE_DR: 374 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 375 return true; 376 } 377 378 return false; 379 } 380 381 static void rtas_set_indicator(PowerPCCPU *cpu, sPAPRMachineState *spapr, 382 uint32_t token, uint32_t nargs, 383 target_ulong args, uint32_t nret, 384 target_ulong rets) 385 { 386 uint32_t sensor_type; 387 uint32_t sensor_index; 388 uint32_t sensor_state; 389 uint32_t ret = RTAS_OUT_SUCCESS; 390 sPAPRDRConnector *drc; 391 sPAPRDRConnectorClass *drck; 392 393 if (nargs != 3 || nret != 1) { 394 ret = RTAS_OUT_PARAM_ERROR; 395 goto out; 396 } 397 398 sensor_type = rtas_ld(args, 0); 399 sensor_index = rtas_ld(args, 1); 400 sensor_state = rtas_ld(args, 2); 401 402 if (!sensor_type_is_dr(sensor_type)) { 403 goto out_unimplemented; 404 } 405 406 /* if this is a DR sensor we can assume sensor_index == drc_index */ 407 drc = spapr_dr_connector_by_index(sensor_index); 408 if (!drc) { 409 DPRINTF("rtas_set_indicator: invalid sensor/DRC index: %xh\n", 410 sensor_index); 411 ret = RTAS_OUT_PARAM_ERROR; 412 goto out; 413 } 414 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 415 416 switch (sensor_type) { 417 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 418 /* if the guest is configuring a device attached to this 419 * DRC, we should reset the configuration state at this 420 * point since it may no longer be reliable (guest released 421 * device and needs to start over, or unplug occurred so 422 * the FDT is no longer valid) 423 */ 424 if (sensor_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { 425 sPAPRConfigureConnectorState *ccs = spapr_ccs_find(spapr, 426 sensor_index); 427 if (ccs) { 428 spapr_ccs_remove(spapr, ccs); 429 } 430 } 431 ret = drck->set_isolation_state(drc, sensor_state); 432 break; 433 case RTAS_SENSOR_TYPE_DR: 434 ret = drck->set_indicator_state(drc, sensor_state); 435 break; 436 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 437 ret = drck->set_allocation_state(drc, sensor_state); 438 break; 439 default: 440 goto out_unimplemented; 441 } 442 443 out: 444 rtas_st(rets, 0, ret); 445 return; 446 447 out_unimplemented: 448 /* currently only DR-related sensors are implemented */ 449 DPRINTF("rtas_set_indicator: sensor/indicator not implemented: %d\n", 450 sensor_type); 451 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 452 } 453 454 static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPRMachineState *spapr, 455 uint32_t token, uint32_t nargs, 456 target_ulong args, uint32_t nret, 457 target_ulong rets) 458 { 459 uint32_t sensor_type; 460 uint32_t sensor_index; 461 uint32_t sensor_state = 0; 462 sPAPRDRConnector *drc; 463 sPAPRDRConnectorClass *drck; 464 uint32_t ret = RTAS_OUT_SUCCESS; 465 466 if (nargs != 2 || nret != 2) { 467 ret = RTAS_OUT_PARAM_ERROR; 468 goto out; 469 } 470 471 sensor_type = rtas_ld(args, 0); 472 sensor_index = rtas_ld(args, 1); 473 474 if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { 475 /* currently only DR-related sensors are implemented */ 476 DPRINTF("rtas_get_sensor_state: sensor/indicator not implemented: %d\n", 477 sensor_type); 478 ret = RTAS_OUT_NOT_SUPPORTED; 479 goto out; 480 } 481 482 drc = spapr_dr_connector_by_index(sensor_index); 483 if (!drc) { 484 DPRINTF("rtas_get_sensor_state: invalid sensor/DRC index: %xh\n", 485 sensor_index); 486 ret = RTAS_OUT_PARAM_ERROR; 487 goto out; 488 } 489 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 490 ret = drck->entity_sense(drc, &sensor_state); 491 492 out: 493 rtas_st(rets, 0, ret); 494 rtas_st(rets, 1, sensor_state); 495 } 496 497 /* configure-connector work area offsets, int32_t units for field 498 * indexes, bytes for field offset/len values. 499 * 500 * as documented by PAPR+ v2.7, 13.5.3.5 501 */ 502 #define CC_IDX_NODE_NAME_OFFSET 2 503 #define CC_IDX_PROP_NAME_OFFSET 2 504 #define CC_IDX_PROP_LEN 3 505 #define CC_IDX_PROP_DATA_OFFSET 4 506 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4) 507 #define CC_WA_LEN 4096 508 509 static void configure_connector_st(target_ulong addr, target_ulong offset, 510 const void *buf, size_t len) 511 { 512 cpu_physical_memory_write(ppc64_phys_to_real(addr + offset), 513 buf, MIN(len, CC_WA_LEN - offset)); 514 } 515 516 static void rtas_ibm_configure_connector(PowerPCCPU *cpu, 517 sPAPRMachineState *spapr, 518 uint32_t token, uint32_t nargs, 519 target_ulong args, uint32_t nret, 520 target_ulong rets) 521 { 522 uint64_t wa_addr; 523 uint64_t wa_offset; 524 uint32_t drc_index; 525 sPAPRDRConnector *drc; 526 sPAPRDRConnectorClass *drck; 527 sPAPRConfigureConnectorState *ccs; 528 sPAPRDRCCResponse resp = SPAPR_DR_CC_RESPONSE_CONTINUE; 529 int rc; 530 const void *fdt; 531 532 if (nargs != 2 || nret != 1) { 533 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 534 return; 535 } 536 537 wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0); 538 539 drc_index = rtas_ld(wa_addr, 0); 540 drc = spapr_dr_connector_by_index(drc_index); 541 if (!drc) { 542 DPRINTF("rtas_ibm_configure_connector: invalid DRC index: %xh\n", 543 drc_index); 544 rc = RTAS_OUT_PARAM_ERROR; 545 goto out; 546 } 547 548 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 549 fdt = drck->get_fdt(drc, NULL); 550 if (!fdt) { 551 DPRINTF("rtas_ibm_configure_connector: Missing FDT for DRC index: %xh\n", 552 drc_index); 553 rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; 554 goto out; 555 } 556 557 ccs = spapr_ccs_find(spapr, drc_index); 558 if (!ccs) { 559 ccs = g_new0(sPAPRConfigureConnectorState, 1); 560 (void)drck->get_fdt(drc, &ccs->fdt_offset); 561 ccs->drc_index = drc_index; 562 spapr_ccs_add(spapr, ccs); 563 } 564 565 do { 566 uint32_t tag; 567 const char *name; 568 const struct fdt_property *prop; 569 int fdt_offset_next, prop_len; 570 571 tag = fdt_next_tag(fdt, ccs->fdt_offset, &fdt_offset_next); 572 573 switch (tag) { 574 case FDT_BEGIN_NODE: 575 ccs->fdt_depth++; 576 name = fdt_get_name(fdt, ccs->fdt_offset, NULL); 577 578 /* provide the name of the next OF node */ 579 wa_offset = CC_VAL_DATA_OFFSET; 580 rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset); 581 configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); 582 resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD; 583 break; 584 case FDT_END_NODE: 585 ccs->fdt_depth--; 586 if (ccs->fdt_depth == 0) { 587 /* done sending the device tree, don't need to track 588 * the state anymore 589 */ 590 drck->set_configured(drc); 591 spapr_ccs_remove(spapr, ccs); 592 ccs = NULL; 593 resp = SPAPR_DR_CC_RESPONSE_SUCCESS; 594 } else { 595 resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; 596 } 597 break; 598 case FDT_PROP: 599 prop = fdt_get_property_by_offset(fdt, ccs->fdt_offset, 600 &prop_len); 601 name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); 602 603 /* provide the name of the next OF property */ 604 wa_offset = CC_VAL_DATA_OFFSET; 605 rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset); 606 configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); 607 608 /* provide the length and value of the OF property. data gets 609 * placed immediately after NULL terminator of the OF property's 610 * name string 611 */ 612 wa_offset += strlen(name) + 1, 613 rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len); 614 rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset); 615 configure_connector_st(wa_addr, wa_offset, prop->data, prop_len); 616 resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY; 617 break; 618 case FDT_END: 619 resp = SPAPR_DR_CC_RESPONSE_ERROR; 620 default: 621 /* keep seeking for an actionable tag */ 622 break; 623 } 624 if (ccs) { 625 ccs->fdt_offset = fdt_offset_next; 626 } 627 } while (resp == SPAPR_DR_CC_RESPONSE_CONTINUE); 628 629 rc = resp; 630 out: 631 rtas_st(rets, 0, rc); 632 } 633 634 static struct rtas_call { 635 const char *name; 636 spapr_rtas_fn fn; 637 } rtas_table[RTAS_TOKEN_MAX - RTAS_TOKEN_BASE]; 638 639 target_ulong spapr_rtas_call(PowerPCCPU *cpu, sPAPRMachineState *spapr, 640 uint32_t token, uint32_t nargs, target_ulong args, 641 uint32_t nret, target_ulong rets) 642 { 643 if ((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)) { 644 struct rtas_call *call = rtas_table + (token - RTAS_TOKEN_BASE); 645 646 if (call->fn) { 647 call->fn(cpu, spapr, token, nargs, args, nret, rets); 648 return H_SUCCESS; 649 } 650 } 651 652 /* HACK: Some Linux early debug code uses RTAS display-character, 653 * but assumes the token value is 0xa (which it is on some real 654 * machines) without looking it up in the device tree. This 655 * special case makes this work */ 656 if (token == 0xa) { 657 rtas_display_character(cpu, spapr, 0xa, nargs, args, nret, rets); 658 return H_SUCCESS; 659 } 660 661 hcall_dprintf("Unknown RTAS token 0x%x\n", token); 662 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 663 return H_PARAMETER; 664 } 665 666 void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn) 667 { 668 assert((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)); 669 670 token -= RTAS_TOKEN_BASE; 671 672 assert(!rtas_table[token].name); 673 674 rtas_table[token].name = name; 675 rtas_table[token].fn = fn; 676 } 677 678 int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr, 679 hwaddr rtas_size) 680 { 681 int ret; 682 int i; 683 uint32_t lrdr_capacity[5]; 684 MachineState *machine = MACHINE(qdev_get_machine()); 685 686 ret = fdt_add_mem_rsv(fdt, rtas_addr, rtas_size); 687 if (ret < 0) { 688 fprintf(stderr, "Couldn't add RTAS reserve entry: %s\n", 689 fdt_strerror(ret)); 690 return ret; 691 } 692 693 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-base", 694 rtas_addr); 695 if (ret < 0) { 696 fprintf(stderr, "Couldn't add linux,rtas-base property: %s\n", 697 fdt_strerror(ret)); 698 return ret; 699 } 700 701 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-entry", 702 rtas_addr); 703 if (ret < 0) { 704 fprintf(stderr, "Couldn't add linux,rtas-entry property: %s\n", 705 fdt_strerror(ret)); 706 return ret; 707 } 708 709 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-size", 710 rtas_size); 711 if (ret < 0) { 712 fprintf(stderr, "Couldn't add rtas-size property: %s\n", 713 fdt_strerror(ret)); 714 return ret; 715 } 716 717 for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) { 718 struct rtas_call *call = &rtas_table[i]; 719 720 if (!call->name) { 721 continue; 722 } 723 724 ret = qemu_fdt_setprop_cell(fdt, "/rtas", call->name, 725 i + RTAS_TOKEN_BASE); 726 if (ret < 0) { 727 fprintf(stderr, "Couldn't add rtas token for %s: %s\n", 728 call->name, fdt_strerror(ret)); 729 return ret; 730 } 731 732 } 733 734 lrdr_capacity[0] = cpu_to_be32(((uint64_t)machine->maxram_size) >> 32); 735 lrdr_capacity[1] = cpu_to_be32(machine->maxram_size & 0xffffffff); 736 lrdr_capacity[2] = 0; 737 lrdr_capacity[3] = cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE); 738 lrdr_capacity[4] = cpu_to_be32(max_cpus/smp_threads); 739 ret = qemu_fdt_setprop(fdt, "/rtas", "ibm,lrdr-capacity", lrdr_capacity, 740 sizeof(lrdr_capacity)); 741 if (ret < 0) { 742 fprintf(stderr, "Couldn't add ibm,lrdr-capacity rtas property\n"); 743 return ret; 744 } 745 746 return 0; 747 } 748 749 static void core_rtas_register_types(void) 750 { 751 spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character", 752 rtas_display_character); 753 spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off); 754 spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot", 755 rtas_system_reboot); 756 spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state", 757 rtas_query_cpu_stopped_state); 758 spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu); 759 spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self); 760 spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER, 761 "ibm,get-system-parameter", 762 rtas_ibm_get_system_parameter); 763 spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER, 764 "ibm,set-system-parameter", 765 rtas_ibm_set_system_parameter); 766 spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term", 767 rtas_ibm_os_term); 768 spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level", 769 rtas_set_power_level); 770 spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", 771 rtas_get_power_level); 772 spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", 773 rtas_set_indicator); 774 spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", 775 rtas_get_sensor_state); 776 spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector", 777 rtas_ibm_configure_connector); 778 } 779 780 type_init(core_rtas_register_types) 781