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 #include "qemu/cutils.h" 43 44 /* #define DEBUG_SPAPR */ 45 46 #ifdef DEBUG_SPAPR 47 #define DPRINTF(fmt, ...) \ 48 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) 49 #else 50 #define DPRINTF(fmt, ...) \ 51 do { } while (0) 52 #endif 53 54 static sPAPRConfigureConnectorState *spapr_ccs_find(sPAPRMachineState *spapr, 55 uint32_t drc_index) 56 { 57 sPAPRConfigureConnectorState *ccs = NULL; 58 59 QTAILQ_FOREACH(ccs, &spapr->ccs_list, next) { 60 if (ccs->drc_index == drc_index) { 61 break; 62 } 63 } 64 65 return ccs; 66 } 67 68 static void spapr_ccs_add(sPAPRMachineState *spapr, 69 sPAPRConfigureConnectorState *ccs) 70 { 71 g_assert(!spapr_ccs_find(spapr, ccs->drc_index)); 72 QTAILQ_INSERT_HEAD(&spapr->ccs_list, ccs, next); 73 } 74 75 static void spapr_ccs_remove(sPAPRMachineState *spapr, 76 sPAPRConfigureConnectorState *ccs) 77 { 78 QTAILQ_REMOVE(&spapr->ccs_list, ccs, next); 79 g_free(ccs); 80 } 81 82 void spapr_ccs_reset_hook(void *opaque) 83 { 84 sPAPRMachineState *spapr = opaque; 85 sPAPRConfigureConnectorState *ccs, *ccs_tmp; 86 87 QTAILQ_FOREACH_SAFE(ccs, &spapr->ccs_list, next, ccs_tmp) { 88 spapr_ccs_remove(spapr, ccs); 89 } 90 } 91 92 static void rtas_display_character(PowerPCCPU *cpu, sPAPRMachineState *spapr, 93 uint32_t token, uint32_t nargs, 94 target_ulong args, 95 uint32_t nret, target_ulong rets) 96 { 97 uint8_t c = rtas_ld(args, 0); 98 VIOsPAPRDevice *sdev = vty_lookup(spapr, 0); 99 100 if (!sdev) { 101 rtas_st(rets, 0, RTAS_OUT_HW_ERROR); 102 } else { 103 vty_putchars(sdev, &c, sizeof(c)); 104 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 105 } 106 } 107 108 static void rtas_power_off(PowerPCCPU *cpu, sPAPRMachineState *spapr, 109 uint32_t token, uint32_t nargs, target_ulong args, 110 uint32_t nret, target_ulong rets) 111 { 112 if (nargs != 2 || nret != 1) { 113 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 114 return; 115 } 116 qemu_system_shutdown_request(); 117 cpu_stop_current(); 118 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 119 } 120 121 static void rtas_system_reboot(PowerPCCPU *cpu, sPAPRMachineState *spapr, 122 uint32_t token, uint32_t nargs, 123 target_ulong args, 124 uint32_t nret, target_ulong rets) 125 { 126 if (nargs != 0 || nret != 1) { 127 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 128 return; 129 } 130 qemu_system_reset_request(); 131 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 132 } 133 134 static void rtas_query_cpu_stopped_state(PowerPCCPU *cpu_, 135 sPAPRMachineState *spapr, 136 uint32_t token, uint32_t nargs, 137 target_ulong args, 138 uint32_t nret, target_ulong rets) 139 { 140 target_ulong id; 141 PowerPCCPU *cpu; 142 143 if (nargs != 1 || nret != 2) { 144 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 145 return; 146 } 147 148 id = rtas_ld(args, 0); 149 cpu = ppc_get_vcpu_by_dt_id(id); 150 if (cpu != NULL) { 151 if (CPU(cpu)->halted) { 152 rtas_st(rets, 1, 0); 153 } else { 154 rtas_st(rets, 1, 2); 155 } 156 157 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 158 return; 159 } 160 161 /* Didn't find a matching cpu */ 162 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 163 } 164 165 static void rtas_start_cpu(PowerPCCPU *cpu_, sPAPRMachineState *spapr, 166 uint32_t token, uint32_t nargs, 167 target_ulong args, 168 uint32_t nret, target_ulong rets) 169 { 170 target_ulong id, start, r3; 171 PowerPCCPU *cpu; 172 173 if (nargs != 3 || nret != 1) { 174 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 175 return; 176 } 177 178 id = rtas_ld(args, 0); 179 start = rtas_ld(args, 1); 180 r3 = rtas_ld(args, 2); 181 182 cpu = ppc_get_vcpu_by_dt_id(id); 183 if (cpu != NULL) { 184 CPUState *cs = CPU(cpu); 185 CPUPPCState *env = &cpu->env; 186 187 if (!cs->halted) { 188 rtas_st(rets, 0, RTAS_OUT_HW_ERROR); 189 return; 190 } 191 192 /* This will make sure qemu state is up to date with kvm, and 193 * mark it dirty so our changes get flushed back before the 194 * new cpu enters */ 195 kvm_cpu_synchronize_state(cs); 196 197 env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME); 198 env->nip = start; 199 env->gpr[3] = r3; 200 cs->halted = 0; 201 202 qemu_cpu_kick(cs); 203 204 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 205 return; 206 } 207 208 /* Didn't find a matching cpu */ 209 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 210 } 211 212 static void rtas_stop_self(PowerPCCPU *cpu, sPAPRMachineState *spapr, 213 uint32_t token, uint32_t nargs, 214 target_ulong args, 215 uint32_t nret, target_ulong rets) 216 { 217 CPUState *cs = CPU(cpu); 218 CPUPPCState *env = &cpu->env; 219 220 cs->halted = 1; 221 qemu_cpu_kick(cs); 222 /* 223 * While stopping a CPU, the guest calls H_CPPR which 224 * effectively disables interrupts on XICS level. 225 * However decrementer interrupts in TCG can still 226 * wake the CPU up so here we disable interrupts in MSR 227 * as well. 228 * As rtas_start_cpu() resets the whole MSR anyway, there is 229 * no need to bother with specific bits, we just clear it. 230 */ 231 env->msr = 0; 232 } 233 234 static inline int sysparm_st(target_ulong addr, target_ulong len, 235 const void *val, uint16_t vallen) 236 { 237 hwaddr phys = ppc64_phys_to_real(addr); 238 239 if (len < 2) { 240 return RTAS_OUT_SYSPARM_PARAM_ERROR; 241 } 242 stw_be_phys(&address_space_memory, phys, vallen); 243 cpu_physical_memory_write(phys + 2, val, MIN(len - 2, vallen)); 244 return RTAS_OUT_SUCCESS; 245 } 246 247 static void rtas_ibm_get_system_parameter(PowerPCCPU *cpu, 248 sPAPRMachineState *spapr, 249 uint32_t token, uint32_t nargs, 250 target_ulong args, 251 uint32_t nret, target_ulong rets) 252 { 253 target_ulong parameter = rtas_ld(args, 0); 254 target_ulong buffer = rtas_ld(args, 1); 255 target_ulong length = rtas_ld(args, 2); 256 target_ulong ret; 257 258 switch (parameter) { 259 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: { 260 char *param_val = g_strdup_printf("MaxEntCap=%d," 261 "DesMem=%llu," 262 "DesProcs=%d," 263 "MaxPlatProcs=%d", 264 max_cpus, 265 current_machine->ram_size / M_BYTE, 266 smp_cpus, 267 max_cpus); 268 ret = sysparm_st(buffer, length, param_val, strlen(param_val) + 1); 269 g_free(param_val); 270 break; 271 } 272 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: { 273 uint8_t param_val = DIAGNOSTICS_RUN_MODE_DISABLED; 274 275 ret = sysparm_st(buffer, length, ¶m_val, sizeof(param_val)); 276 break; 277 } 278 case RTAS_SYSPARM_UUID: 279 ret = sysparm_st(buffer, length, qemu_uuid, (qemu_uuid_set ? 16 : 0)); 280 break; 281 default: 282 ret = RTAS_OUT_NOT_SUPPORTED; 283 } 284 285 rtas_st(rets, 0, ret); 286 } 287 288 static void rtas_ibm_set_system_parameter(PowerPCCPU *cpu, 289 sPAPRMachineState *spapr, 290 uint32_t token, uint32_t nargs, 291 target_ulong args, 292 uint32_t nret, target_ulong rets) 293 { 294 target_ulong parameter = rtas_ld(args, 0); 295 target_ulong ret = RTAS_OUT_NOT_SUPPORTED; 296 297 switch (parameter) { 298 case RTAS_SYSPARM_SPLPAR_CHARACTERISTICS: 299 case RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE: 300 case RTAS_SYSPARM_UUID: 301 ret = RTAS_OUT_NOT_AUTHORIZED; 302 break; 303 } 304 305 rtas_st(rets, 0, ret); 306 } 307 308 static void rtas_ibm_os_term(PowerPCCPU *cpu, 309 sPAPRMachineState *spapr, 310 uint32_t token, uint32_t nargs, 311 target_ulong args, 312 uint32_t nret, target_ulong rets) 313 { 314 target_ulong ret = 0; 315 316 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE, &error_abort); 317 318 rtas_st(rets, 0, ret); 319 } 320 321 static void rtas_set_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 322 uint32_t token, uint32_t nargs, 323 target_ulong args, uint32_t nret, 324 target_ulong rets) 325 { 326 int32_t power_domain; 327 328 if (nargs != 2 || nret != 2) { 329 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 330 return; 331 } 332 333 /* we currently only use a single, "live insert" powerdomain for 334 * hotplugged/dlpar'd resources, so the power is always live/full (100) 335 */ 336 power_domain = rtas_ld(args, 0); 337 if (power_domain != -1) { 338 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 339 return; 340 } 341 342 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 343 rtas_st(rets, 1, 100); 344 } 345 346 static void rtas_get_power_level(PowerPCCPU *cpu, sPAPRMachineState *spapr, 347 uint32_t token, uint32_t nargs, 348 target_ulong args, uint32_t nret, 349 target_ulong rets) 350 { 351 int32_t power_domain; 352 353 if (nargs != 1 || nret != 2) { 354 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 355 return; 356 } 357 358 /* we currently only use a single, "live insert" powerdomain for 359 * hotplugged/dlpar'd resources, so the power is always live/full (100) 360 */ 361 power_domain = rtas_ld(args, 0); 362 if (power_domain != -1) { 363 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 364 return; 365 } 366 367 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 368 rtas_st(rets, 1, 100); 369 } 370 371 static bool sensor_type_is_dr(uint32_t sensor_type) 372 { 373 switch (sensor_type) { 374 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 375 case RTAS_SENSOR_TYPE_DR: 376 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 377 return true; 378 } 379 380 return false; 381 } 382 383 static void rtas_set_indicator(PowerPCCPU *cpu, sPAPRMachineState *spapr, 384 uint32_t token, uint32_t nargs, 385 target_ulong args, uint32_t nret, 386 target_ulong rets) 387 { 388 uint32_t sensor_type; 389 uint32_t sensor_index; 390 uint32_t sensor_state; 391 uint32_t ret = RTAS_OUT_SUCCESS; 392 sPAPRDRConnector *drc; 393 sPAPRDRConnectorClass *drck; 394 395 if (nargs != 3 || nret != 1) { 396 ret = RTAS_OUT_PARAM_ERROR; 397 goto out; 398 } 399 400 sensor_type = rtas_ld(args, 0); 401 sensor_index = rtas_ld(args, 1); 402 sensor_state = rtas_ld(args, 2); 403 404 if (!sensor_type_is_dr(sensor_type)) { 405 goto out_unimplemented; 406 } 407 408 /* if this is a DR sensor we can assume sensor_index == drc_index */ 409 drc = spapr_dr_connector_by_index(sensor_index); 410 if (!drc) { 411 DPRINTF("rtas_set_indicator: invalid sensor/DRC index: %xh\n", 412 sensor_index); 413 ret = RTAS_OUT_PARAM_ERROR; 414 goto out; 415 } 416 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 417 418 switch (sensor_type) { 419 case RTAS_SENSOR_TYPE_ISOLATION_STATE: 420 /* if the guest is configuring a device attached to this 421 * DRC, we should reset the configuration state at this 422 * point since it may no longer be reliable (guest released 423 * device and needs to start over, or unplug occurred so 424 * the FDT is no longer valid) 425 */ 426 if (sensor_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { 427 sPAPRConfigureConnectorState *ccs = spapr_ccs_find(spapr, 428 sensor_index); 429 if (ccs) { 430 spapr_ccs_remove(spapr, ccs); 431 } 432 } 433 ret = drck->set_isolation_state(drc, sensor_state); 434 break; 435 case RTAS_SENSOR_TYPE_DR: 436 ret = drck->set_indicator_state(drc, sensor_state); 437 break; 438 case RTAS_SENSOR_TYPE_ALLOCATION_STATE: 439 ret = drck->set_allocation_state(drc, sensor_state); 440 break; 441 default: 442 goto out_unimplemented; 443 } 444 445 out: 446 rtas_st(rets, 0, ret); 447 return; 448 449 out_unimplemented: 450 /* currently only DR-related sensors are implemented */ 451 DPRINTF("rtas_set_indicator: sensor/indicator not implemented: %d\n", 452 sensor_type); 453 rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); 454 } 455 456 static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPRMachineState *spapr, 457 uint32_t token, uint32_t nargs, 458 target_ulong args, uint32_t nret, 459 target_ulong rets) 460 { 461 uint32_t sensor_type; 462 uint32_t sensor_index; 463 uint32_t sensor_state = 0; 464 sPAPRDRConnector *drc; 465 sPAPRDRConnectorClass *drck; 466 uint32_t ret = RTAS_OUT_SUCCESS; 467 468 if (nargs != 2 || nret != 2) { 469 ret = RTAS_OUT_PARAM_ERROR; 470 goto out; 471 } 472 473 sensor_type = rtas_ld(args, 0); 474 sensor_index = rtas_ld(args, 1); 475 476 if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { 477 /* currently only DR-related sensors are implemented */ 478 DPRINTF("rtas_get_sensor_state: sensor/indicator not implemented: %d\n", 479 sensor_type); 480 ret = RTAS_OUT_NOT_SUPPORTED; 481 goto out; 482 } 483 484 drc = spapr_dr_connector_by_index(sensor_index); 485 if (!drc) { 486 DPRINTF("rtas_get_sensor_state: invalid sensor/DRC index: %xh\n", 487 sensor_index); 488 ret = RTAS_OUT_PARAM_ERROR; 489 goto out; 490 } 491 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 492 ret = drck->entity_sense(drc, &sensor_state); 493 494 out: 495 rtas_st(rets, 0, ret); 496 rtas_st(rets, 1, sensor_state); 497 } 498 499 /* configure-connector work area offsets, int32_t units for field 500 * indexes, bytes for field offset/len values. 501 * 502 * as documented by PAPR+ v2.7, 13.5.3.5 503 */ 504 #define CC_IDX_NODE_NAME_OFFSET 2 505 #define CC_IDX_PROP_NAME_OFFSET 2 506 #define CC_IDX_PROP_LEN 3 507 #define CC_IDX_PROP_DATA_OFFSET 4 508 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4) 509 #define CC_WA_LEN 4096 510 511 static void configure_connector_st(target_ulong addr, target_ulong offset, 512 const void *buf, size_t len) 513 { 514 cpu_physical_memory_write(ppc64_phys_to_real(addr + offset), 515 buf, MIN(len, CC_WA_LEN - offset)); 516 } 517 518 static void rtas_ibm_configure_connector(PowerPCCPU *cpu, 519 sPAPRMachineState *spapr, 520 uint32_t token, uint32_t nargs, 521 target_ulong args, uint32_t nret, 522 target_ulong rets) 523 { 524 uint64_t wa_addr; 525 uint64_t wa_offset; 526 uint32_t drc_index; 527 sPAPRDRConnector *drc; 528 sPAPRDRConnectorClass *drck; 529 sPAPRConfigureConnectorState *ccs; 530 sPAPRDRCCResponse resp = SPAPR_DR_CC_RESPONSE_CONTINUE; 531 int rc; 532 const void *fdt; 533 534 if (nargs != 2 || nret != 1) { 535 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 536 return; 537 } 538 539 wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0); 540 541 drc_index = rtas_ld(wa_addr, 0); 542 drc = spapr_dr_connector_by_index(drc_index); 543 if (!drc) { 544 DPRINTF("rtas_ibm_configure_connector: invalid DRC index: %xh\n", 545 drc_index); 546 rc = RTAS_OUT_PARAM_ERROR; 547 goto out; 548 } 549 550 drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 551 fdt = drck->get_fdt(drc, NULL); 552 if (!fdt) { 553 DPRINTF("rtas_ibm_configure_connector: Missing FDT for DRC index: %xh\n", 554 drc_index); 555 rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; 556 goto out; 557 } 558 559 ccs = spapr_ccs_find(spapr, drc_index); 560 if (!ccs) { 561 ccs = g_new0(sPAPRConfigureConnectorState, 1); 562 (void)drck->get_fdt(drc, &ccs->fdt_offset); 563 ccs->drc_index = drc_index; 564 spapr_ccs_add(spapr, ccs); 565 } 566 567 do { 568 uint32_t tag; 569 const char *name; 570 const struct fdt_property *prop; 571 int fdt_offset_next, prop_len; 572 573 tag = fdt_next_tag(fdt, ccs->fdt_offset, &fdt_offset_next); 574 575 switch (tag) { 576 case FDT_BEGIN_NODE: 577 ccs->fdt_depth++; 578 name = fdt_get_name(fdt, ccs->fdt_offset, NULL); 579 580 /* provide the name of the next OF node */ 581 wa_offset = CC_VAL_DATA_OFFSET; 582 rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset); 583 configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); 584 resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD; 585 break; 586 case FDT_END_NODE: 587 ccs->fdt_depth--; 588 if (ccs->fdt_depth == 0) { 589 /* done sending the device tree, don't need to track 590 * the state anymore 591 */ 592 drck->set_configured(drc); 593 spapr_ccs_remove(spapr, ccs); 594 ccs = NULL; 595 resp = SPAPR_DR_CC_RESPONSE_SUCCESS; 596 } else { 597 resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; 598 } 599 break; 600 case FDT_PROP: 601 prop = fdt_get_property_by_offset(fdt, ccs->fdt_offset, 602 &prop_len); 603 name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); 604 605 /* provide the name of the next OF property */ 606 wa_offset = CC_VAL_DATA_OFFSET; 607 rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset); 608 configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); 609 610 /* provide the length and value of the OF property. data gets 611 * placed immediately after NULL terminator of the OF property's 612 * name string 613 */ 614 wa_offset += strlen(name) + 1, 615 rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len); 616 rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset); 617 configure_connector_st(wa_addr, wa_offset, prop->data, prop_len); 618 resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY; 619 break; 620 case FDT_END: 621 resp = SPAPR_DR_CC_RESPONSE_ERROR; 622 default: 623 /* keep seeking for an actionable tag */ 624 break; 625 } 626 if (ccs) { 627 ccs->fdt_offset = fdt_offset_next; 628 } 629 } while (resp == SPAPR_DR_CC_RESPONSE_CONTINUE); 630 631 rc = resp; 632 out: 633 rtas_st(rets, 0, rc); 634 } 635 636 static struct rtas_call { 637 const char *name; 638 spapr_rtas_fn fn; 639 } rtas_table[RTAS_TOKEN_MAX - RTAS_TOKEN_BASE]; 640 641 target_ulong spapr_rtas_call(PowerPCCPU *cpu, sPAPRMachineState *spapr, 642 uint32_t token, uint32_t nargs, target_ulong args, 643 uint32_t nret, target_ulong rets) 644 { 645 if ((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)) { 646 struct rtas_call *call = rtas_table + (token - RTAS_TOKEN_BASE); 647 648 if (call->fn) { 649 call->fn(cpu, spapr, token, nargs, args, nret, rets); 650 return H_SUCCESS; 651 } 652 } 653 654 /* HACK: Some Linux early debug code uses RTAS display-character, 655 * but assumes the token value is 0xa (which it is on some real 656 * machines) without looking it up in the device tree. This 657 * special case makes this work */ 658 if (token == 0xa) { 659 rtas_display_character(cpu, spapr, 0xa, nargs, args, nret, rets); 660 return H_SUCCESS; 661 } 662 663 hcall_dprintf("Unknown RTAS token 0x%x\n", token); 664 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 665 return H_PARAMETER; 666 } 667 668 void spapr_rtas_register(int token, const char *name, spapr_rtas_fn fn) 669 { 670 assert((token >= RTAS_TOKEN_BASE) && (token < RTAS_TOKEN_MAX)); 671 672 token -= RTAS_TOKEN_BASE; 673 674 assert(!rtas_table[token].name); 675 676 rtas_table[token].name = name; 677 rtas_table[token].fn = fn; 678 } 679 680 int spapr_rtas_device_tree_setup(void *fdt, hwaddr rtas_addr, 681 hwaddr rtas_size) 682 { 683 int ret; 684 int i; 685 uint32_t lrdr_capacity[5]; 686 MachineState *machine = MACHINE(qdev_get_machine()); 687 sPAPRMachineState *spapr = SPAPR_MACHINE(machine); 688 uint64_t max_hotplug_addr = spapr->hotplug_memory.base + 689 memory_region_size(&spapr->hotplug_memory.mr); 690 691 ret = fdt_add_mem_rsv(fdt, rtas_addr, rtas_size); 692 if (ret < 0) { 693 fprintf(stderr, "Couldn't add RTAS reserve entry: %s\n", 694 fdt_strerror(ret)); 695 return ret; 696 } 697 698 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-base", 699 rtas_addr); 700 if (ret < 0) { 701 fprintf(stderr, "Couldn't add linux,rtas-base property: %s\n", 702 fdt_strerror(ret)); 703 return ret; 704 } 705 706 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-entry", 707 rtas_addr); 708 if (ret < 0) { 709 fprintf(stderr, "Couldn't add linux,rtas-entry property: %s\n", 710 fdt_strerror(ret)); 711 return ret; 712 } 713 714 ret = qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-size", 715 rtas_size); 716 if (ret < 0) { 717 fprintf(stderr, "Couldn't add rtas-size property: %s\n", 718 fdt_strerror(ret)); 719 return ret; 720 } 721 722 for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) { 723 struct rtas_call *call = &rtas_table[i]; 724 725 if (!call->name) { 726 continue; 727 } 728 729 ret = qemu_fdt_setprop_cell(fdt, "/rtas", call->name, 730 i + RTAS_TOKEN_BASE); 731 if (ret < 0) { 732 fprintf(stderr, "Couldn't add rtas token for %s: %s\n", 733 call->name, fdt_strerror(ret)); 734 return ret; 735 } 736 737 } 738 739 lrdr_capacity[0] = cpu_to_be32(max_hotplug_addr >> 32); 740 lrdr_capacity[1] = cpu_to_be32(max_hotplug_addr & 0xffffffff); 741 lrdr_capacity[2] = 0; 742 lrdr_capacity[3] = cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE); 743 lrdr_capacity[4] = cpu_to_be32(max_cpus/smp_threads); 744 ret = qemu_fdt_setprop(fdt, "/rtas", "ibm,lrdr-capacity", lrdr_capacity, 745 sizeof(lrdr_capacity)); 746 if (ret < 0) { 747 fprintf(stderr, "Couldn't add ibm,lrdr-capacity rtas property\n"); 748 return ret; 749 } 750 751 return 0; 752 } 753 754 static void core_rtas_register_types(void) 755 { 756 spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character", 757 rtas_display_character); 758 spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off); 759 spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot", 760 rtas_system_reboot); 761 spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state", 762 rtas_query_cpu_stopped_state); 763 spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu); 764 spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self); 765 spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER, 766 "ibm,get-system-parameter", 767 rtas_ibm_get_system_parameter); 768 spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER, 769 "ibm,set-system-parameter", 770 rtas_ibm_set_system_parameter); 771 spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term", 772 rtas_ibm_os_term); 773 spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level", 774 rtas_set_power_level); 775 spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", 776 rtas_get_power_level); 777 spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", 778 rtas_set_indicator); 779 spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", 780 rtas_get_sensor_state); 781 spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector", 782 rtas_ibm_configure_connector); 783 } 784 785 type_init(core_rtas_register_types) 786