hw/ppc/spapr_rtas.c

   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, &param_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
 688     ret = fdt_add_mem_rsv(fdt, rtas_addr, rtas_size);
 689     if (ret < 0) {
 690         fprintf(stderr, "Couldn't add RTAS reserve entry: %s\n",
 691                 fdt_strerror(ret));
 692         return ret;
 693     }
 694
 695     ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-base",
 696                                 rtas_addr);
 697     if (ret < 0) {
 698         fprintf(stderr, "Couldn't add linux,rtas-base property: %s\n",
 699                 fdt_strerror(ret));
 700         return ret;
 701     }
 702
 703     ret = qemu_fdt_setprop_cell(fdt, "/rtas", "linux,rtas-entry",
 704                                 rtas_addr);
 705     if (ret < 0) {
 706         fprintf(stderr, "Couldn't add linux,rtas-entry property: %s\n",
 707                 fdt_strerror(ret));
 708         return ret;
 709     }
 710
 711     ret = qemu_fdt_setprop_cell(fdt, "/rtas", "rtas-size",
 712                                 rtas_size);
 713     if (ret < 0) {
 714         fprintf(stderr, "Couldn't add rtas-size property: %s\n",
 715                 fdt_strerror(ret));
 716         return ret;
 717     }
 718
 719     for (i = 0; i < RTAS_TOKEN_MAX - RTAS_TOKEN_BASE; i++) {
 720         struct rtas_call *call = &rtas_table[i];
 721
 722         if (!call->name) {
 723             continue;
 724         }
 725
 726         ret = qemu_fdt_setprop_cell(fdt, "/rtas", call->name,
 727                                     i + RTAS_TOKEN_BASE);
 728         if (ret < 0) {
 729             fprintf(stderr, "Couldn't add rtas token for %s: %s\n",
 730                     call->name, fdt_strerror(ret));
 731             return ret;
 732         }
 733
 734     }
 735
 736     lrdr_capacity[0] = cpu_to_be32(((uint64_t)machine->maxram_size) >> 32);
 737     lrdr_capacity[1] = cpu_to_be32(machine->maxram_size & 0xffffffff);
 738     lrdr_capacity[2] = 0;
 739     lrdr_capacity[3] = cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE);
 740     lrdr_capacity[4] = cpu_to_be32(max_cpus/smp_threads);
 741     ret = qemu_fdt_setprop(fdt, "/rtas", "ibm,lrdr-capacity", lrdr_capacity,
 742                      sizeof(lrdr_capacity));
 743     if (ret < 0) {
 744         fprintf(stderr, "Couldn't add ibm,lrdr-capacity rtas property\n");
 745         return ret;
 746     }
 747
 748     return 0;
 749 }
 750
 751 static void core_rtas_register_types(void)
 752 {
 753     spapr_rtas_register(RTAS_DISPLAY_CHARACTER, "display-character",
 754                         rtas_display_character);
 755     spapr_rtas_register(RTAS_POWER_OFF, "power-off", rtas_power_off);
 756     spapr_rtas_register(RTAS_SYSTEM_REBOOT, "system-reboot",
 757                         rtas_system_reboot);
 758     spapr_rtas_register(RTAS_QUERY_CPU_STOPPED_STATE, "query-cpu-stopped-state",
 759                         rtas_query_cpu_stopped_state);
 760     spapr_rtas_register(RTAS_START_CPU, "start-cpu", rtas_start_cpu);
 761     spapr_rtas_register(RTAS_STOP_SELF, "stop-self", rtas_stop_self);
 762     spapr_rtas_register(RTAS_IBM_GET_SYSTEM_PARAMETER,
 763                         "ibm,get-system-parameter",
 764                         rtas_ibm_get_system_parameter);
 765     spapr_rtas_register(RTAS_IBM_SET_SYSTEM_PARAMETER,
 766                         "ibm,set-system-parameter",
 767                         rtas_ibm_set_system_parameter);
 768     spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term",
 769                         rtas_ibm_os_term);
 770     spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level",
 771                         rtas_set_power_level);
 772     spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level",
 773                         rtas_get_power_level);
 774     spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator",
 775                         rtas_set_indicator);
 776     spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state",
 777                         rtas_get_sensor_state);
 778     spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector",
 779                         rtas_ibm_configure_connector);
 780 }
 781
 782 type_init(core_rtas_register_types)