arch/powerpc/include/asm/opal.h

   1 /*
   2  * PowerNV OPAL definitions.
   3  *
   4  * Copyright 2011 IBM Corp.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef __OPAL_H
  13 #define __OPAL_H
  14
  15 #ifndef __ASSEMBLY__
  16 /*
  17  * SG entry
  18  *
  19  * WARNING: The current implementation requires each entry
  20  * to represent a block that is 4k aligned *and* each block
  21  * size except the last one in the list to be as well.
  22  */
  23 struct opal_sg_entry {
  24         __be64 data;
  25         __be64 length;
  26 };
  27
  28 /* SG list */
  29 struct opal_sg_list {
  30         __be64 length;
  31         __be64 next;
  32         struct opal_sg_entry entry[];
  33 };
  34
  35 /* We calculate number of sg entries based on PAGE_SIZE */
  36 #define SG_ENTRIES_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct opal_sg_entry))
  37
  38 #endif /* __ASSEMBLY__ */
  39
  40 /****** OPAL APIs ******/
  41
  42 /* Return codes */
  43 #define OPAL_SUCCESS            0
  44 #define OPAL_PARAMETER          -1
  45 #define OPAL_BUSY               -2
  46 #define OPAL_PARTIAL            -3
  47 #define OPAL_CONSTRAINED        -4
  48 #define OPAL_CLOSED             -5
  49 #define OPAL_HARDWARE           -6
  50 #define OPAL_UNSUPPORTED        -7
  51 #define OPAL_PERMISSION         -8
  52 #define OPAL_NO_MEM             -9
  53 #define OPAL_RESOURCE           -10
  54 #define OPAL_INTERNAL_ERROR     -11
  55 #define OPAL_BUSY_EVENT         -12
  56 #define OPAL_HARDWARE_FROZEN    -13
  57 #define OPAL_WRONG_STATE        -14
  58 #define OPAL_ASYNC_COMPLETION   -15
  59 #define OPAL_I2C_TIMEOUT        -17
  60 #define OPAL_I2C_INVALID_CMD    -18
  61 #define OPAL_I2C_LBUS_PARITY    -19
  62 #define OPAL_I2C_BKEND_OVERRUN  -20
  63 #define OPAL_I2C_BKEND_ACCESS   -21
  64 #define OPAL_I2C_ARBT_LOST      -22
  65 #define OPAL_I2C_NACK_RCVD      -23
  66 #define OPAL_I2C_STOP_ERR       -24
  67
  68 /* API Tokens (in r0) */
  69 #define OPAL_INVALID_CALL                       -1
  70 #define OPAL_CONSOLE_WRITE                      1
  71 #define OPAL_CONSOLE_READ                       2
  72 #define OPAL_RTC_READ                           3
  73 #define OPAL_RTC_WRITE                          4
  74 #define OPAL_CEC_POWER_DOWN                     5
  75 #define OPAL_CEC_REBOOT                         6
  76 #define OPAL_READ_NVRAM                         7
  77 #define OPAL_WRITE_NVRAM                        8
  78 #define OPAL_HANDLE_INTERRUPT                   9
  79 #define OPAL_POLL_EVENTS                        10
  80 #define OPAL_PCI_SET_HUB_TCE_MEMORY             11
  81 #define OPAL_PCI_SET_PHB_TCE_MEMORY             12
  82 #define OPAL_PCI_CONFIG_READ_BYTE               13
  83 #define OPAL_PCI_CONFIG_READ_HALF_WORD          14
  84 #define OPAL_PCI_CONFIG_READ_WORD               15
  85 #define OPAL_PCI_CONFIG_WRITE_BYTE              16
  86 #define OPAL_PCI_CONFIG_WRITE_HALF_WORD         17
  87 #define OPAL_PCI_CONFIG_WRITE_WORD              18
  88 #define OPAL_SET_XIVE                           19
  89 #define OPAL_GET_XIVE                           20
  90 #define OPAL_GET_COMPLETION_TOKEN_STATUS        21 /* obsolete */
  91 #define OPAL_REGISTER_OPAL_EXCEPTION_HANDLER    22
  92 #define OPAL_PCI_EEH_FREEZE_STATUS              23
  93 #define OPAL_PCI_SHPC                           24
  94 #define OPAL_CONSOLE_WRITE_BUFFER_SPACE         25
  95 #define OPAL_PCI_EEH_FREEZE_CLEAR               26
  96 #define OPAL_PCI_PHB_MMIO_ENABLE                27
  97 #define OPAL_PCI_SET_PHB_MEM_WINDOW             28
  98 #define OPAL_PCI_MAP_PE_MMIO_WINDOW             29
  99 #define OPAL_PCI_SET_PHB_TABLE_MEMORY           30
 100 #define OPAL_PCI_SET_PE                         31
 101 #define OPAL_PCI_SET_PELTV                      32
 102 #define OPAL_PCI_SET_MVE                        33
 103 #define OPAL_PCI_SET_MVE_ENABLE                 34
 104 #define OPAL_PCI_GET_XIVE_REISSUE               35
 105 #define OPAL_PCI_SET_XIVE_REISSUE               36
 106 #define OPAL_PCI_SET_XIVE_PE                    37
 107 #define OPAL_GET_XIVE_SOURCE                    38
 108 #define OPAL_GET_MSI_32                         39
 109 #define OPAL_GET_MSI_64                         40
 110 #define OPAL_START_CPU                          41
 111 #define OPAL_QUERY_CPU_STATUS                   42
 112 #define OPAL_WRITE_OPPANEL                      43
 113 #define OPAL_PCI_MAP_PE_DMA_WINDOW              44
 114 #define OPAL_PCI_MAP_PE_DMA_WINDOW_REAL         45
 115 #define OPAL_PCI_RESET                          49
 116 #define OPAL_PCI_GET_HUB_DIAG_DATA              50
 117 #define OPAL_PCI_GET_PHB_DIAG_DATA              51
 118 #define OPAL_PCI_FENCE_PHB                      52
 119 #define OPAL_PCI_REINIT                         53
 120 #define OPAL_PCI_MASK_PE_ERROR                  54
 121 #define OPAL_SET_SLOT_LED_STATUS                55
 122 #define OPAL_GET_EPOW_STATUS                    56
 123 #define OPAL_SET_SYSTEM_ATTENTION_LED           57
 124 #define OPAL_RESERVED1                          58
 125 #define OPAL_RESERVED2                          59
 126 #define OPAL_PCI_NEXT_ERROR                     60
 127 #define OPAL_PCI_EEH_FREEZE_STATUS2             61
 128 #define OPAL_PCI_POLL                           62
 129 #define OPAL_PCI_MSI_EOI                        63
 130 #define OPAL_PCI_GET_PHB_DIAG_DATA2             64
 131 #define OPAL_XSCOM_READ                         65
 132 #define OPAL_XSCOM_WRITE                        66
 133 #define OPAL_LPC_READ                           67
 134 #define OPAL_LPC_WRITE                          68
 135 #define OPAL_RETURN_CPU                         69
 136 #define OPAL_REINIT_CPUS                        70
 137 #define OPAL_ELOG_READ                          71
 138 #define OPAL_ELOG_WRITE                         72
 139 #define OPAL_ELOG_ACK                           73
 140 #define OPAL_ELOG_RESEND                        74
 141 #define OPAL_ELOG_SIZE                          75
 142 #define OPAL_FLASH_VALIDATE                     76
 143 #define OPAL_FLASH_MANAGE                       77
 144 #define OPAL_FLASH_UPDATE                       78
 145 #define OPAL_RESYNC_TIMEBASE                    79
 146 #define OPAL_CHECK_TOKEN                        80
 147 #define OPAL_DUMP_INIT                          81
 148 #define OPAL_DUMP_INFO                          82
 149 #define OPAL_DUMP_READ                          83
 150 #define OPAL_DUMP_ACK                           84
 151 #define OPAL_GET_MSG                            85
 152 #define OPAL_CHECK_ASYNC_COMPLETION             86
 153 #define OPAL_SYNC_HOST_REBOOT                   87
 154 #define OPAL_SENSOR_READ                        88
 155 #define OPAL_GET_PARAM                          89
 156 #define OPAL_SET_PARAM                          90
 157 #define OPAL_DUMP_RESEND                        91
 158 #define OPAL_PCI_SET_PHB_CXL_MODE               93
 159 #define OPAL_DUMP_INFO2                         94
 160 #define OPAL_PCI_ERR_INJECT                     96
 161 #define OPAL_PCI_EEH_FREEZE_SET                 97
 162 #define OPAL_HANDLE_HMI                         98
 163 #define OPAL_CONFIG_CPU_IDLE_STATE              99
 164 #define OPAL_SLW_SET_REG                        100
 165 #define OPAL_REGISTER_DUMP_REGION               101
 166 #define OPAL_UNREGISTER_DUMP_REGION             102
 167 #define OPAL_WRITE_TPO                          103
 168 #define OPAL_READ_TPO                           104
 169 #define OPAL_IPMI_SEND                          107
 170 #define OPAL_IPMI_RECV                          108
 171 #define OPAL_I2C_REQUEST                        109
 172
 173 /* Device tree flags */
 174
 175 /* Flags set in power-mgmt nodes in device tree if
 176  * respective idle states are supported in the platform.
 177  */
 178 #define OPAL_PM_NAP_ENABLED     0x00010000
 179 #define OPAL_PM_SLEEP_ENABLED   0x00020000
 180 #define OPAL_PM_WINKLE_ENABLED  0x00040000
 181 #define OPAL_PM_SLEEP_ENABLED_ER1       0x00080000
 182
 183 #ifndef __ASSEMBLY__
 184
 185 #include <linux/notifier.h>
 186
 187 /* Other enums */
 188 enum OpalVendorApiTokens {
 189         OPAL_START_VENDOR_API_RANGE = 1000, OPAL_END_VENDOR_API_RANGE = 1999
 190 };
 191
 192 enum OpalFreezeState {
 193         OPAL_EEH_STOPPED_NOT_FROZEN = 0,
 194         OPAL_EEH_STOPPED_MMIO_FREEZE = 1,
 195         OPAL_EEH_STOPPED_DMA_FREEZE = 2,
 196         OPAL_EEH_STOPPED_MMIO_DMA_FREEZE = 3,
 197         OPAL_EEH_STOPPED_RESET = 4,
 198         OPAL_EEH_STOPPED_TEMP_UNAVAIL = 5,
 199         OPAL_EEH_STOPPED_PERM_UNAVAIL = 6
 200 };
 201
 202 enum OpalEehFreezeActionToken {
 203         OPAL_EEH_ACTION_CLEAR_FREEZE_MMIO = 1,
 204         OPAL_EEH_ACTION_CLEAR_FREEZE_DMA = 2,
 205         OPAL_EEH_ACTION_CLEAR_FREEZE_ALL = 3,
 206
 207         OPAL_EEH_ACTION_SET_FREEZE_MMIO = 1,
 208         OPAL_EEH_ACTION_SET_FREEZE_DMA  = 2,
 209         OPAL_EEH_ACTION_SET_FREEZE_ALL  = 3
 210 };
 211
 212 enum OpalPciStatusToken {
 213         OPAL_EEH_NO_ERROR       = 0,
 214         OPAL_EEH_IOC_ERROR      = 1,
 215         OPAL_EEH_PHB_ERROR      = 2,
 216         OPAL_EEH_PE_ERROR       = 3,
 217         OPAL_EEH_PE_MMIO_ERROR  = 4,
 218         OPAL_EEH_PE_DMA_ERROR   = 5
 219 };
 220
 221 enum OpalPciErrorSeverity {
 222         OPAL_EEH_SEV_NO_ERROR   = 0,
 223         OPAL_EEH_SEV_IOC_DEAD   = 1,
 224         OPAL_EEH_SEV_PHB_DEAD   = 2,
 225         OPAL_EEH_SEV_PHB_FENCED = 3,
 226         OPAL_EEH_SEV_PE_ER      = 4,
 227         OPAL_EEH_SEV_INF        = 5
 228 };
 229
 230 enum OpalErrinjectType {
 231         OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR        = 0,
 232         OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64      = 1,
 233 };
 234
 235 enum OpalErrinjectFunc {
 236         /* IOA bus specific errors */
 237         OPAL_ERR_INJECT_FUNC_IOA_LD_MEM_ADDR    = 0,
 238         OPAL_ERR_INJECT_FUNC_IOA_LD_MEM_DATA    = 1,
 239         OPAL_ERR_INJECT_FUNC_IOA_LD_IO_ADDR     = 2,
 240         OPAL_ERR_INJECT_FUNC_IOA_LD_IO_DATA     = 3,
 241         OPAL_ERR_INJECT_FUNC_IOA_LD_CFG_ADDR    = 4,
 242         OPAL_ERR_INJECT_FUNC_IOA_LD_CFG_DATA    = 5,
 243         OPAL_ERR_INJECT_FUNC_IOA_ST_MEM_ADDR    = 6,
 244         OPAL_ERR_INJECT_FUNC_IOA_ST_MEM_DATA    = 7,
 245         OPAL_ERR_INJECT_FUNC_IOA_ST_IO_ADDR     = 8,
 246         OPAL_ERR_INJECT_FUNC_IOA_ST_IO_DATA     = 9,
 247         OPAL_ERR_INJECT_FUNC_IOA_ST_CFG_ADDR    = 10,
 248         OPAL_ERR_INJECT_FUNC_IOA_ST_CFG_DATA    = 11,
 249         OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_ADDR    = 12,
 250         OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_DATA    = 13,
 251         OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_MASTER  = 14,
 252         OPAL_ERR_INJECT_FUNC_IOA_DMA_RD_TARGET  = 15,
 253         OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_ADDR    = 16,
 254         OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_DATA    = 17,
 255         OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_MASTER  = 18,
 256         OPAL_ERR_INJECT_FUNC_IOA_DMA_WR_TARGET  = 19,
 257 };
 258
 259 enum OpalShpcAction {
 260         OPAL_SHPC_GET_LINK_STATE = 0,
 261         OPAL_SHPC_GET_SLOT_STATE = 1
 262 };
 263
 264 enum OpalShpcLinkState {
 265         OPAL_SHPC_LINK_DOWN = 0,
 266         OPAL_SHPC_LINK_UP = 1
 267 };
 268
 269 enum OpalMmioWindowType {
 270         OPAL_M32_WINDOW_TYPE = 1,
 271         OPAL_M64_WINDOW_TYPE = 2,
 272         OPAL_IO_WINDOW_TYPE = 3
 273 };
 274
 275 enum OpalShpcSlotState {
 276         OPAL_SHPC_DEV_NOT_PRESENT = 0,
 277         OPAL_SHPC_DEV_PRESENT = 1
 278 };
 279
 280 enum OpalExceptionHandler {
 281         OPAL_MACHINE_CHECK_HANDLER = 1,
 282         OPAL_HYPERVISOR_MAINTENANCE_HANDLER = 2,
 283         OPAL_SOFTPATCH_HANDLER = 3
 284 };
 285
 286 enum OpalPendingState {
 287         OPAL_EVENT_OPAL_INTERNAL        = 0x1,
 288         OPAL_EVENT_NVRAM                = 0x2,
 289         OPAL_EVENT_RTC                  = 0x4,
 290         OPAL_EVENT_CONSOLE_OUTPUT       = 0x8,
 291         OPAL_EVENT_CONSOLE_INPUT        = 0x10,
 292         OPAL_EVENT_ERROR_LOG_AVAIL      = 0x20,
 293         OPAL_EVENT_ERROR_LOG            = 0x40,
 294         OPAL_EVENT_EPOW                 = 0x80,
 295         OPAL_EVENT_LED_STATUS           = 0x100,
 296         OPAL_EVENT_PCI_ERROR            = 0x200,
 297         OPAL_EVENT_DUMP_AVAIL           = 0x400,
 298         OPAL_EVENT_MSG_PENDING          = 0x800,
 299 };
 300
 301 enum OpalMessageType {
 302         OPAL_MSG_ASYNC_COMP = 0,        /* params[0] = token, params[1] = rc,
 303                                          * additional params function-specific
 304                                          */
 305         OPAL_MSG_MEM_ERR,
 306         OPAL_MSG_EPOW,
 307         OPAL_MSG_SHUTDOWN,
 308         OPAL_MSG_HMI_EVT,
 309         OPAL_MSG_TYPE_MAX,
 310 };
 311
 312 enum OpalThreadStatus {
 313         OPAL_THREAD_INACTIVE = 0x0,
 314         OPAL_THREAD_STARTED = 0x1,
 315         OPAL_THREAD_UNAVAILABLE = 0x2 /* opal-v3 */
 316 };
 317
 318 enum OpalPciBusCompare {
 319         OpalPciBusAny   = 0,    /* Any bus number match */
 320         OpalPciBus3Bits = 2,    /* Match top 3 bits of bus number */
 321         OpalPciBus4Bits = 3,    /* Match top 4 bits of bus number */
 322         OpalPciBus5Bits = 4,    /* Match top 5 bits of bus number */
 323         OpalPciBus6Bits = 5,    /* Match top 6 bits of bus number */
 324         OpalPciBus7Bits = 6,    /* Match top 7 bits of bus number */
 325         OpalPciBusAll   = 7,    /* Match bus number exactly */
 326 };
 327
 328 enum OpalDeviceCompare {
 329         OPAL_IGNORE_RID_DEVICE_NUMBER = 0,
 330         OPAL_COMPARE_RID_DEVICE_NUMBER = 1
 331 };
 332
 333 enum OpalFuncCompare {
 334         OPAL_IGNORE_RID_FUNCTION_NUMBER = 0,
 335         OPAL_COMPARE_RID_FUNCTION_NUMBER = 1
 336 };
 337
 338 enum OpalPeAction {
 339         OPAL_UNMAP_PE = 0,
 340         OPAL_MAP_PE = 1
 341 };
 342
 343 enum OpalPeltvAction {
 344         OPAL_REMOVE_PE_FROM_DOMAIN = 0,
 345         OPAL_ADD_PE_TO_DOMAIN = 1
 346 };
 347
 348 enum OpalMveEnableAction {
 349         OPAL_DISABLE_MVE = 0,
 350         OPAL_ENABLE_MVE = 1
 351 };
 352
 353 enum OpalM64EnableAction {
 354         OPAL_DISABLE_M64 = 0,
 355         OPAL_ENABLE_M64_SPLIT = 1,
 356         OPAL_ENABLE_M64_NON_SPLIT = 2
 357 };
 358
 359 enum OpalPciResetScope {
 360         OPAL_RESET_PHB_COMPLETE         = 1,
 361         OPAL_RESET_PCI_LINK             = 2,
 362         OPAL_RESET_PHB_ERROR            = 3,
 363         OPAL_RESET_PCI_HOT              = 4,
 364         OPAL_RESET_PCI_FUNDAMENTAL      = 5,
 365         OPAL_RESET_PCI_IODA_TABLE       = 6
 366 };
 367
 368 enum OpalPciReinitScope {
 369         OPAL_REINIT_PCI_DEV = 1000
 370 };
 371
 372 enum OpalPciResetState {
 373         OPAL_DEASSERT_RESET = 0,
 374         OPAL_ASSERT_RESET = 1
 375 };
 376
 377 enum OpalPciMaskAction {
 378         OPAL_UNMASK_ERROR_TYPE = 0,
 379         OPAL_MASK_ERROR_TYPE = 1
 380 };
 381
 382 enum OpalSlotLedType {
 383         OPAL_SLOT_LED_ID_TYPE = 0,
 384         OPAL_SLOT_LED_FAULT_TYPE = 1
 385 };
 386
 387 enum OpalLedAction {
 388         OPAL_TURN_OFF_LED = 0,
 389         OPAL_TURN_ON_LED = 1,
 390         OPAL_QUERY_LED_STATE_AFTER_BUSY = 2
 391 };
 392
 393 enum OpalEpowStatus {
 394         OPAL_EPOW_NONE = 0,
 395         OPAL_EPOW_UPS = 1,
 396         OPAL_EPOW_OVER_AMBIENT_TEMP = 2,
 397         OPAL_EPOW_OVER_INTERNAL_TEMP = 3
 398 };
 399
 400 /*
 401  * Address cycle types for LPC accesses. These also correspond
 402  * to the content of the first cell of the "reg" property for
 403  * device nodes on the LPC bus
 404  */
 405 enum OpalLPCAddressType {
 406         OPAL_LPC_MEM    = 0,
 407         OPAL_LPC_IO     = 1,
 408         OPAL_LPC_FW     = 2,
 409 };
 410
 411 /* System parameter permission */
 412 enum OpalSysparamPerm {
 413         OPAL_SYSPARAM_READ      = 0x1,
 414         OPAL_SYSPARAM_WRITE     = 0x2,
 415         OPAL_SYSPARAM_RW        = (OPAL_SYSPARAM_READ | OPAL_SYSPARAM_WRITE),
 416 };
 417
 418 struct opal_msg {
 419         __be32 msg_type;
 420         __be32 reserved;
 421         __be64 params[8];
 422 };
 423
 424 enum {
 425         OPAL_IPMI_MSG_FORMAT_VERSION_1 = 1,
 426 };
 427
 428 struct opal_ipmi_msg {
 429         uint8_t         version;
 430         uint8_t         netfn;
 431         uint8_t         cmd;
 432         uint8_t         data[];
 433 };
 434
 435 /* FSP memory errors handling */
 436 enum OpalMemErr_Version {
 437         OpalMemErr_V1 = 1,
 438 };
 439
 440 enum OpalMemErrType {
 441         OPAL_MEM_ERR_TYPE_RESILIENCE    = 0,
 442         OPAL_MEM_ERR_TYPE_DYN_DALLOC,
 443         OPAL_MEM_ERR_TYPE_SCRUB,
 444 };
 445
 446 /* Memory Reilience error type */
 447 enum OpalMemErr_ResilErrType {
 448         OPAL_MEM_RESILIENCE_CE          = 0,
 449         OPAL_MEM_RESILIENCE_UE,
 450         OPAL_MEM_RESILIENCE_UE_SCRUB,
 451 };
 452
 453 /* Dynamic Memory Deallocation type */
 454 enum OpalMemErr_DynErrType {
 455         OPAL_MEM_DYNAMIC_DEALLOC        = 0,
 456 };
 457
 458 /* OpalMemoryErrorData->flags */
 459 #define OPAL_MEM_CORRECTED_ERROR        0x0001
 460 #define OPAL_MEM_THRESHOLD_EXCEEDED     0x0002
 461 #define OPAL_MEM_ACK_REQUIRED           0x8000
 462
 463 struct OpalMemoryErrorData {
 464         enum OpalMemErr_Version version:8;      /* 0x00 */
 465         enum OpalMemErrType     type:8;         /* 0x01 */
 466         __be16                  flags;          /* 0x02 */
 467         uint8_t                 reserved_1[4];  /* 0x04 */
 468
 469         union {
 470                 /* Memory Resilience corrected/uncorrected error info */
 471                 struct {
 472                         enum OpalMemErr_ResilErrType resil_err_type:8;
 473                         uint8_t         reserved_1[7];
 474                         __be64          physical_address_start;
 475                         __be64          physical_address_end;
 476                 } resilience;
 477                 /* Dynamic memory deallocation error info */
 478                 struct {
 479                         enum OpalMemErr_DynErrType dyn_err_type:8;
 480                         uint8_t         reserved_1[7];
 481                         __be64          physical_address_start;
 482                         __be64          physical_address_end;
 483                 } dyn_dealloc;
 484         } u;
 485 };
 486
 487 /* HMI interrupt event */
 488 enum OpalHMI_Version {
 489         OpalHMIEvt_V1 = 1,
 490 };
 491
 492 enum OpalHMI_Severity {
 493         OpalHMI_SEV_NO_ERROR = 0,
 494         OpalHMI_SEV_WARNING = 1,
 495         OpalHMI_SEV_ERROR_SYNC = 2,
 496         OpalHMI_SEV_FATAL = 3,
 497 };
 498
 499 enum OpalHMI_Disposition {
 500         OpalHMI_DISPOSITION_RECOVERED = 0,
 501         OpalHMI_DISPOSITION_NOT_RECOVERED = 1,
 502 };
 503
 504 enum OpalHMI_ErrType {
 505         OpalHMI_ERROR_MALFUNC_ALERT     = 0,
 506         OpalHMI_ERROR_PROC_RECOV_DONE,
 507         OpalHMI_ERROR_PROC_RECOV_DONE_AGAIN,
 508         OpalHMI_ERROR_PROC_RECOV_MASKED,
 509         OpalHMI_ERROR_TFAC,
 510         OpalHMI_ERROR_TFMR_PARITY,
 511         OpalHMI_ERROR_HA_OVERFLOW_WARN,
 512         OpalHMI_ERROR_XSCOM_FAIL,
 513         OpalHMI_ERROR_XSCOM_DONE,
 514         OpalHMI_ERROR_SCOM_FIR,
 515         OpalHMI_ERROR_DEBUG_TRIG_FIR,
 516         OpalHMI_ERROR_HYP_RESOURCE,
 517 };
 518
 519 struct OpalHMIEvent {
 520         uint8_t         version;        /* 0x00 */
 521         uint8_t         severity;       /* 0x01 */
 522         uint8_t         type;           /* 0x02 */
 523         uint8_t         disposition;    /* 0x03 */
 524         uint8_t         reserved_1[4];  /* 0x04 */
 525
 526         __be64          hmer;
 527         /* TFMR register. Valid only for TFAC and TFMR_PARITY error type. */
 528         __be64          tfmr;
 529 };
 530
 531 enum {
 532         OPAL_P7IOC_DIAG_TYPE_NONE       = 0,
 533         OPAL_P7IOC_DIAG_TYPE_RGC        = 1,
 534         OPAL_P7IOC_DIAG_TYPE_BI         = 2,
 535         OPAL_P7IOC_DIAG_TYPE_CI         = 3,
 536         OPAL_P7IOC_DIAG_TYPE_MISC       = 4,
 537         OPAL_P7IOC_DIAG_TYPE_I2C        = 5,
 538         OPAL_P7IOC_DIAG_TYPE_LAST       = 6
 539 };
 540
 541 struct OpalIoP7IOCErrorData {
 542         __be16 type;
 543
 544         /* GEM */
 545         __be64 gemXfir;
 546         __be64 gemRfir;
 547         __be64 gemRirqfir;
 548         __be64 gemMask;
 549         __be64 gemRwof;
 550
 551         /* LEM */
 552         __be64 lemFir;
 553         __be64 lemErrMask;
 554         __be64 lemAction0;
 555         __be64 lemAction1;
 556         __be64 lemWof;
 557
 558         union {
 559                 struct OpalIoP7IOCRgcErrorData {
 560                         __be64 rgcStatus;       /* 3E1C10 */
 561                         __be64 rgcLdcp;         /* 3E1C18 */
 562                 }rgc;
 563                 struct OpalIoP7IOCBiErrorData {
 564                         __be64 biLdcp0;         /* 3C0100, 3C0118 */
 565                         __be64 biLdcp1;         /* 3C0108, 3C0120 */
 566                         __be64 biLdcp2;         /* 3C0110, 3C0128 */
 567                         __be64 biFenceStatus;   /* 3C0130, 3C0130 */
 568
 569                             u8 biDownbound;     /* BI Downbound or Upbound */
 570                 }bi;
 571                 struct OpalIoP7IOCCiErrorData {
 572                         __be64 ciPortStatus;    /* 3Dn008 */
 573                         __be64 ciPortLdcp;      /* 3Dn010 */
 574
 575                             u8 ciPort;          /* Index of CI port: 0/1 */
 576                 }ci;
 577         };
 578 };
 579
 580 /**
 581  * This structure defines the overlay which will be used to store PHB error
 582  * data upon request.
 583  */
 584 enum {
 585         OPAL_PHB_ERROR_DATA_VERSION_1 = 1,
 586 };
 587
 588 enum {
 589         OPAL_PHB_ERROR_DATA_TYPE_P7IOC = 1,
 590         OPAL_PHB_ERROR_DATA_TYPE_PHB3 = 2
 591 };
 592
 593 enum {
 594         OPAL_P7IOC_NUM_PEST_REGS = 128,
 595         OPAL_PHB3_NUM_PEST_REGS = 256
 596 };
 597
 598 struct OpalIoPhbErrorCommon {
 599         __be32 version;
 600         __be32 ioType;
 601         __be32 len;
 602 };
 603
 604 struct OpalIoP7IOCPhbErrorData {
 605         struct OpalIoPhbErrorCommon common;
 606
 607         __be32 brdgCtl;
 608
 609         // P7IOC utl regs
 610         __be32 portStatusReg;
 611         __be32 rootCmplxStatus;
 612         __be32 busAgentStatus;
 613
 614         // P7IOC cfg regs
 615         __be32 deviceStatus;
 616         __be32 slotStatus;
 617         __be32 linkStatus;
 618         __be32 devCmdStatus;
 619         __be32 devSecStatus;
 620
 621         // cfg AER regs
 622         __be32 rootErrorStatus;
 623         __be32 uncorrErrorStatus;
 624         __be32 corrErrorStatus;
 625         __be32 tlpHdr1;
 626         __be32 tlpHdr2;
 627         __be32 tlpHdr3;
 628         __be32 tlpHdr4;
 629         __be32 sourceId;
 630
 631         __be32 rsv3;
 632
 633         // Record data about the call to allocate a buffer.
 634         __be64 errorClass;
 635         __be64 correlator;
 636
 637         //P7IOC MMIO Error Regs
 638         __be64 p7iocPlssr;                // n120
 639         __be64 p7iocCsr;                  // n110
 640         __be64 lemFir;                    // nC00
 641         __be64 lemErrorMask;              // nC18
 642         __be64 lemWOF;                    // nC40
 643         __be64 phbErrorStatus;            // nC80
 644         __be64 phbFirstErrorStatus;       // nC88
 645         __be64 phbErrorLog0;              // nCC0
 646         __be64 phbErrorLog1;              // nCC8
 647         __be64 mmioErrorStatus;           // nD00
 648         __be64 mmioFirstErrorStatus;      // nD08
 649         __be64 mmioErrorLog0;             // nD40
 650         __be64 mmioErrorLog1;             // nD48
 651         __be64 dma0ErrorStatus;           // nD80
 652         __be64 dma0FirstErrorStatus;      // nD88
 653         __be64 dma0ErrorLog0;             // nDC0
 654         __be64 dma0ErrorLog1;             // nDC8
 655         __be64 dma1ErrorStatus;           // nE00
 656         __be64 dma1FirstErrorStatus;      // nE08
 657         __be64 dma1ErrorLog0;             // nE40
 658         __be64 dma1ErrorLog1;             // nE48
 659         __be64 pestA[OPAL_P7IOC_NUM_PEST_REGS];
 660         __be64 pestB[OPAL_P7IOC_NUM_PEST_REGS];
 661 };
 662
 663 struct OpalIoPhb3ErrorData {
 664         struct OpalIoPhbErrorCommon common;
 665
 666         __be32 brdgCtl;
 667
 668         /* PHB3 UTL regs */
 669         __be32 portStatusReg;
 670         __be32 rootCmplxStatus;
 671         __be32 busAgentStatus;
 672
 673         /* PHB3 cfg regs */
 674         __be32 deviceStatus;
 675         __be32 slotStatus;
 676         __be32 linkStatus;
 677         __be32 devCmdStatus;
 678         __be32 devSecStatus;
 679
 680         /* cfg AER regs */
 681         __be32 rootErrorStatus;
 682         __be32 uncorrErrorStatus;
 683         __be32 corrErrorStatus;
 684         __be32 tlpHdr1;
 685         __be32 tlpHdr2;
 686         __be32 tlpHdr3;
 687         __be32 tlpHdr4;
 688         __be32 sourceId;
 689
 690         __be32 rsv3;
 691
 692         /* Record data about the call to allocate a buffer */
 693         __be64 errorClass;
 694         __be64 correlator;
 695
 696         __be64 nFir;                    /* 000 */
 697         __be64 nFirMask;                /* 003 */
 698         __be64 nFirWOF;         /* 008 */
 699
 700         /* PHB3 MMIO Error Regs */
 701         __be64 phbPlssr;                /* 120 */
 702         __be64 phbCsr;          /* 110 */
 703         __be64 lemFir;          /* C00 */
 704         __be64 lemErrorMask;            /* C18 */
 705         __be64 lemWOF;          /* C40 */
 706         __be64 phbErrorStatus;  /* C80 */
 707         __be64 phbFirstErrorStatus;     /* C88 */
 708         __be64 phbErrorLog0;            /* CC0 */
 709         __be64 phbErrorLog1;            /* CC8 */
 710         __be64 mmioErrorStatus; /* D00 */
 711         __be64 mmioFirstErrorStatus;    /* D08 */
 712         __be64 mmioErrorLog0;           /* D40 */
 713         __be64 mmioErrorLog1;           /* D48 */
 714         __be64 dma0ErrorStatus; /* D80 */
 715         __be64 dma0FirstErrorStatus;    /* D88 */
 716         __be64 dma0ErrorLog0;           /* DC0 */
 717         __be64 dma0ErrorLog1;           /* DC8 */
 718         __be64 dma1ErrorStatus; /* E00 */
 719         __be64 dma1FirstErrorStatus;    /* E08 */
 720         __be64 dma1ErrorLog0;           /* E40 */
 721         __be64 dma1ErrorLog1;           /* E48 */
 722         __be64 pestA[OPAL_PHB3_NUM_PEST_REGS];
 723         __be64 pestB[OPAL_PHB3_NUM_PEST_REGS];
 724 };
 725
 726 enum {
 727         OPAL_REINIT_CPUS_HILE_BE        = (1 << 0),
 728         OPAL_REINIT_CPUS_HILE_LE        = (1 << 1),
 729 };
 730
 731 typedef struct oppanel_line {
 732         const char *    line;
 733         uint64_t        line_len;
 734 } oppanel_line_t;
 735
 736 /* OPAL I2C request */
 737 struct opal_i2c_request {
 738         uint8_t type;
 739 #define OPAL_I2C_RAW_READ       0
 740 #define OPAL_I2C_RAW_WRITE      1
 741 #define OPAL_I2C_SM_READ        2
 742 #define OPAL_I2C_SM_WRITE       3
 743         uint8_t flags;
 744 #define OPAL_I2C_ADDR_10        0x01    /* Not supported yet */
 745         uint8_t subaddr_sz;             /* Max 4 */
 746         uint8_t reserved;
 747         __be16 addr;                    /* 7 or 10 bit address */
 748         __be16 reserved2;
 749         __be32 subaddr;         /* Sub-address if any */
 750         __be32 size;                    /* Data size */
 751         __be64 buffer_ra;               /* Buffer real address */
 752 };
 753
 754 /* /sys/firmware/opal */
 755 extern struct kobject *opal_kobj;
 756
 757 /* /ibm,opal */
 758 extern struct device_node *opal_node;
 759
 760 /* API functions */
 761 int64_t opal_invalid_call(void);
 762 int64_t opal_console_write(int64_t term_number, __be64 *length,
 763                            const uint8_t *buffer);
 764 int64_t opal_console_read(int64_t term_number, __be64 *length,
 765                           uint8_t *buffer);
 766 int64_t opal_console_write_buffer_space(int64_t term_number,
 767                                         __be64 *length);
 768 int64_t opal_rtc_read(__be32 *year_month_day,
 769                       __be64 *hour_minute_second_millisecond);
 770 int64_t opal_rtc_write(uint32_t year_month_day,
 771                        uint64_t hour_minute_second_millisecond);
 772 int64_t opal_tpo_read(uint64_t token, __be32 *year_mon_day, __be32 *hour_min);
 773 int64_t opal_tpo_write(uint64_t token, uint32_t year_mon_day,
 774                        uint32_t hour_min);
 775 int64_t opal_cec_power_down(uint64_t request);
 776 int64_t opal_cec_reboot(void);
 777 int64_t opal_read_nvram(uint64_t buffer, uint64_t size, uint64_t offset);
 778 int64_t opal_write_nvram(uint64_t buffer, uint64_t size, uint64_t offset);
 779 int64_t opal_handle_interrupt(uint64_t isn, __be64 *outstanding_event_mask);
 780 int64_t opal_poll_events(__be64 *outstanding_event_mask);
 781 int64_t opal_pci_set_hub_tce_memory(uint64_t hub_id, uint64_t tce_mem_addr,
 782                                     uint64_t tce_mem_size);
 783 int64_t opal_pci_set_phb_tce_memory(uint64_t phb_id, uint64_t tce_mem_addr,
 784                                     uint64_t tce_mem_size);
 785 int64_t opal_pci_config_read_byte(uint64_t phb_id, uint64_t bus_dev_func,
 786                                   uint64_t offset, uint8_t *data);
 787 int64_t opal_pci_config_read_half_word(uint64_t phb_id, uint64_t bus_dev_func,
 788                                        uint64_t offset, __be16 *data);
 789 int64_t opal_pci_config_read_word(uint64_t phb_id, uint64_t bus_dev_func,
 790                                   uint64_t offset, __be32 *data);
 791 int64_t opal_pci_config_write_byte(uint64_t phb_id, uint64_t bus_dev_func,
 792                                    uint64_t offset, uint8_t data);
 793 int64_t opal_pci_config_write_half_word(uint64_t phb_id, uint64_t bus_dev_func,
 794                                         uint64_t offset, uint16_t data);
 795 int64_t opal_pci_config_write_word(uint64_t phb_id, uint64_t bus_dev_func,
 796                                    uint64_t offset, uint32_t data);
 797 int64_t opal_set_xive(uint32_t isn, uint16_t server, uint8_t priority);
 798 int64_t opal_get_xive(uint32_t isn, __be16 *server, uint8_t *priority);
 799 int64_t opal_register_exception_handler(uint64_t opal_exception,
 800                                         uint64_t handler_address,
 801                                         uint64_t glue_cache_line);
 802 int64_t opal_pci_eeh_freeze_status(uint64_t phb_id, uint64_t pe_number,
 803                                    uint8_t *freeze_state,
 804                                    __be16 *pci_error_type,
 805                                    __be64 *phb_status);
 806 int64_t opal_pci_eeh_freeze_clear(uint64_t phb_id, uint64_t pe_number,
 807                                   uint64_t eeh_action_token);
 808 int64_t opal_pci_eeh_freeze_set(uint64_t phb_id, uint64_t pe_number,
 809                                 uint64_t eeh_action_token);
 810 int64_t opal_pci_err_inject(uint64_t phb_id, uint32_t pe_no, uint32_t type,
 811                             uint32_t func, uint64_t addr, uint64_t mask);
 812 int64_t opal_pci_shpc(uint64_t phb_id, uint64_t shpc_action, uint8_t *state);
 813
 814
 815
 816 int64_t opal_pci_phb_mmio_enable(uint64_t phb_id, uint16_t window_type,
 817                                  uint16_t window_num, uint16_t enable);
 818 int64_t opal_pci_set_phb_mem_window(uint64_t phb_id, uint16_t window_type,
 819                                     uint16_t window_num,
 820                                     uint64_t starting_real_address,
 821                                     uint64_t starting_pci_address,
 822                                     uint64_t size);
 823 int64_t opal_pci_map_pe_mmio_window(uint64_t phb_id, uint16_t pe_number,
 824                                     uint16_t window_type, uint16_t window_num,
 825                                     uint16_t segment_num);
 826 int64_t opal_pci_set_phb_table_memory(uint64_t phb_id, uint64_t rtt_addr,
 827                                       uint64_t ivt_addr, uint64_t ivt_len,
 828                                       uint64_t reject_array_addr,
 829                                       uint64_t peltv_addr);
 830 int64_t opal_pci_set_pe(uint64_t phb_id, uint64_t pe_number, uint64_t bus_dev_func,
 831                         uint8_t bus_compare, uint8_t dev_compare, uint8_t func_compare,
 832                         uint8_t pe_action);
 833 int64_t opal_pci_set_peltv(uint64_t phb_id, uint32_t parent_pe, uint32_t child_pe,
 834                            uint8_t state);
 835 int64_t opal_pci_set_mve(uint64_t phb_id, uint32_t mve_number, uint32_t pe_number);
 836 int64_t opal_pci_set_mve_enable(uint64_t phb_id, uint32_t mve_number,
 837                                 uint32_t state);
 838 int64_t opal_pci_get_xive_reissue(uint64_t phb_id, uint32_t xive_number,
 839                                   uint8_t *p_bit, uint8_t *q_bit);
 840 int64_t opal_pci_set_xive_reissue(uint64_t phb_id, uint32_t xive_number,
 841                                   uint8_t p_bit, uint8_t q_bit);
 842 int64_t opal_pci_msi_eoi(uint64_t phb_id, uint32_t hw_irq);
 843 int64_t opal_pci_set_xive_pe(uint64_t phb_id, uint32_t pe_number,
 844                              uint32_t xive_num);
 845 int64_t opal_get_xive_source(uint64_t phb_id, uint32_t xive_num,
 846                              __be32 *interrupt_source_number);
 847 int64_t opal_get_msi_32(uint64_t phb_id, uint32_t mve_number, uint32_t xive_num,
 848                         uint8_t msi_range, __be32 *msi_address,
 849                         __be32 *message_data);
 850 int64_t opal_get_msi_64(uint64_t phb_id, uint32_t mve_number,
 851                         uint32_t xive_num, uint8_t msi_range,
 852                         __be64 *msi_address, __be32 *message_data);
 853 int64_t opal_start_cpu(uint64_t thread_number, uint64_t start_address);
 854 int64_t opal_query_cpu_status(uint64_t thread_number, uint8_t *thread_status);
 855 int64_t opal_write_oppanel(oppanel_line_t *lines, uint64_t num_lines);
 856 int64_t opal_pci_map_pe_dma_window(uint64_t phb_id, uint16_t pe_number, uint16_t window_id,
 857                                    uint16_t tce_levels, uint64_t tce_table_addr,
 858                                    uint64_t tce_table_size, uint64_t tce_page_size);
 859 int64_t opal_pci_map_pe_dma_window_real(uint64_t phb_id, uint16_t pe_number,
 860                                         uint16_t dma_window_number, uint64_t pci_start_addr,
 861                                         uint64_t pci_mem_size);
 862 int64_t opal_pci_reset(uint64_t phb_id, uint8_t reset_scope, uint8_t assert_state);
 863
 864 int64_t opal_pci_get_hub_diag_data(uint64_t hub_id, void *diag_buffer,
 865                                    uint64_t diag_buffer_len);
 866 int64_t opal_pci_get_phb_diag_data(uint64_t phb_id, void *diag_buffer,
 867                                    uint64_t diag_buffer_len);
 868 int64_t opal_pci_get_phb_diag_data2(uint64_t phb_id, void *diag_buffer,
 869                                     uint64_t diag_buffer_len);
 870 int64_t opal_pci_fence_phb(uint64_t phb_id);
 871 int64_t opal_pci_reinit(uint64_t phb_id, uint64_t reinit_scope, uint64_t data);
 872 int64_t opal_pci_mask_pe_error(uint64_t phb_id, uint16_t pe_number, uint8_t error_type, uint8_t mask_action);
 873 int64_t opal_set_slot_led_status(uint64_t phb_id, uint64_t slot_id, uint8_t led_type, uint8_t led_action);
 874 int64_t opal_get_epow_status(__be64 *status);
 875 int64_t opal_set_system_attention_led(uint8_t led_action);
 876 int64_t opal_pci_next_error(uint64_t phb_id, __be64 *first_frozen_pe,
 877                             __be16 *pci_error_type, __be16 *severity);
 878 int64_t opal_pci_poll(uint64_t phb_id);
 879 int64_t opal_return_cpu(void);
 880 int64_t opal_check_token(uint64_t token);
 881 int64_t opal_reinit_cpus(uint64_t flags);
 882
 883 int64_t opal_xscom_read(uint32_t gcid, uint64_t pcb_addr, __be64 *val);
 884 int64_t opal_xscom_write(uint32_t gcid, uint64_t pcb_addr, uint64_t val);
 885
 886 int64_t opal_lpc_write(uint32_t chip_id, enum OpalLPCAddressType addr_type,
 887                        uint32_t addr, uint32_t data, uint32_t sz);
 888 int64_t opal_lpc_read(uint32_t chip_id, enum OpalLPCAddressType addr_type,
 889                       uint32_t addr, __be32 *data, uint32_t sz);
 890
 891 int64_t opal_read_elog(uint64_t buffer, uint64_t size, uint64_t log_id);
 892 int64_t opal_get_elog_size(__be64 *log_id, __be64 *size, __be64 *elog_type);
 893 int64_t opal_write_elog(uint64_t buffer, uint64_t size, uint64_t offset);
 894 int64_t opal_send_ack_elog(uint64_t log_id);
 895 void opal_resend_pending_logs(void);
 896
 897 int64_t opal_validate_flash(uint64_t buffer, uint32_t *size, uint32_t *result);
 898 int64_t opal_manage_flash(uint8_t op);
 899 int64_t opal_update_flash(uint64_t blk_list);
 900 int64_t opal_dump_init(uint8_t dump_type);
 901 int64_t opal_dump_info(__be32 *dump_id, __be32 *dump_size);
 902 int64_t opal_dump_info2(__be32 *dump_id, __be32 *dump_size, __be32 *dump_type);
 903 int64_t opal_dump_read(uint32_t dump_id, uint64_t buffer);
 904 int64_t opal_dump_ack(uint32_t dump_id);
 905 int64_t opal_dump_resend_notification(void);
 906
 907 int64_t opal_get_msg(uint64_t buffer, uint64_t size);
 908 int64_t opal_check_completion(uint64_t buffer, uint64_t size, uint64_t token);
 909 int64_t opal_sync_host_reboot(void);
 910 int64_t opal_get_param(uint64_t token, uint32_t param_id, uint64_t buffer,
 911                 uint64_t length);
 912 int64_t opal_set_param(uint64_t token, uint32_t param_id, uint64_t buffer,
 913                 uint64_t length);
 914 int64_t opal_sensor_read(uint32_t sensor_hndl, int token, __be32 *sensor_data);
 915 int64_t opal_handle_hmi(void);
 916 int64_t opal_register_dump_region(uint32_t id, uint64_t start, uint64_t end);
 917 int64_t opal_unregister_dump_region(uint32_t id);
 918 int64_t opal_slw_set_reg(uint64_t cpu_pir, uint64_t sprn, uint64_t val);
 919 int64_t opal_pci_set_phb_cxl_mode(uint64_t phb_id, uint64_t mode, uint64_t pe_number);
 920 int64_t opal_ipmi_send(uint64_t interface, struct opal_ipmi_msg *msg,
 921                 uint64_t msg_len);
 922 int64_t opal_ipmi_recv(uint64_t interface, struct opal_ipmi_msg *msg,
 923                 uint64_t *msg_len);
 924 int64_t opal_i2c_request(uint64_t async_token, uint32_t bus_id,
 925                          struct opal_i2c_request *oreq);
 926
 927 /* Internal functions */
 928 extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
 929                                    int depth, void *data);
 930 extern int early_init_dt_scan_recoverable_ranges(unsigned long node,
 931                                  const char *uname, int depth, void *data);
 932
 933 extern int opal_get_chars(uint32_t vtermno, char *buf, int count);
 934 extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len);
 935
 936 extern void hvc_opal_init_early(void);
 937
 938 extern int opal_notifier_register(struct notifier_block *nb);
 939 extern int opal_notifier_unregister(struct notifier_block *nb);
 940
 941 extern int opal_message_notifier_register(enum OpalMessageType msg_type,
 942                                                 struct notifier_block *nb);
 943 extern void opal_notifier_enable(void);
 944 extern void opal_notifier_disable(void);
 945 extern void opal_notifier_update_evt(uint64_t evt_mask, uint64_t evt_val);
 946
 947 extern int __opal_async_get_token(void);
 948 extern int opal_async_get_token_interruptible(void);
 949 extern int __opal_async_release_token(int token);
 950 extern int opal_async_release_token(int token);
 951 extern int opal_async_wait_response(uint64_t token, struct opal_msg *msg);
 952 extern int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data);
 953
 954 struct rtc_time;
 955 extern unsigned long opal_get_boot_time(void);
 956 extern void opal_nvram_init(void);
 957 extern void opal_flash_init(void);
 958 extern void opal_flash_term_callback(void);
 959 extern int opal_elog_init(void);
 960 extern void opal_platform_dump_init(void);
 961 extern void opal_sys_param_init(void);
 962 extern void opal_msglog_init(void);
 963
 964 extern int opal_machine_check(struct pt_regs *regs);
 965 extern bool opal_mce_check_early_recovery(struct pt_regs *regs);
 966 extern int opal_hmi_exception_early(struct pt_regs *regs);
 967 extern int opal_handle_hmi_exception(struct pt_regs *regs);
 968
 969 extern void opal_shutdown(void);
 970 extern int opal_resync_timebase(void);
 971
 972 extern void opal_lpc_init(void);
 973
 974 struct opal_sg_list *opal_vmalloc_to_sg_list(void *vmalloc_addr,
 975                                              unsigned long vmalloc_size);
 976 void opal_free_sg_list(struct opal_sg_list *sg);
 977
 978 /*
 979  * Dump region ID range usable by the OS
 980  */
 981 #define OPAL_DUMP_REGION_HOST_START             0x80
 982 #define OPAL_DUMP_REGION_LOG_BUF                0x80
 983 #define OPAL_DUMP_REGION_HOST_END               0xFF
 984
 985 #endif /* __ASSEMBLY__ */
 986
 987 #endif /* __OPAL_H */