MdePkg/Library/BaseIoLibIntrinsic/IoLibInternalTdxNull.c

   1 /** @file
   2   Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
   3   SPDX-License-Identifier: BSD-2-Clause-Patent
   4
   5 **/
   6
   7 #include <Library/BaseLib.h>
   8 #include "BaseIoLibIntrinsicInternal.h"
   9 #include "IoLibTdx.h"
  10
  11 /**
  12   Check if it is Tdx guest.
  13
  14   @return TRUE    It is Tdx guest
  15   @return FALSE   It is not Tdx guest
  16
  17 **/
  18 BOOLEAN
  19 EFIAPI
  20 IsTdxGuest (
  21   VOID
  22   )
  23 {
  24   return FALSE;
  25 }
  26
  27 /**
  28   Reads an 8-bit I/O port.
  29
  30   TDVMCALL_IO is invoked to read I/O port.
  31
  32   @param  Port  The I/O port to read.
  33
  34   @return The value read.
  35
  36 **/
  37 UINT8
  38 EFIAPI
  39 TdIoRead8 (
  40   IN      UINTN  Port
  41   )
  42 {
  43   ASSERT (FALSE);
  44   return 0;
  45 }
  46
  47 /**
  48   Reads a 16-bit I/O port.
  49
  50   TDVMCALL_IO is invoked to write I/O port.
  51
  52   @param  Port  The I/O port to read.
  53
  54   @return The value read.
  55
  56 **/
  57 UINT16
  58 EFIAPI
  59 TdIoRead16 (
  60   IN      UINTN  Port
  61   )
  62 {
  63   ASSERT (FALSE);
  64   return 0;
  65 }
  66
  67 /**
  68   Reads a 32-bit I/O port.
  69
  70   TDVMCALL_IO is invoked to read I/O port.
  71
  72   @param  Port  The I/O port to read.
  73
  74   @return The value read.
  75
  76 **/
  77 UINT32
  78 EFIAPI
  79 TdIoRead32 (
  80   IN      UINTN  Port
  81   )
  82 {
  83   ASSERT (FALSE);
  84   return 0;
  85 }
  86
  87 /**
  88   Writes an 8-bit I/O port.
  89
  90   TDVMCALL_IO is invoked to write I/O port.
  91
  92   @param  Port  The I/O port to write.
  93   @param  Value The value to write to the I/O port.
  94
  95   @return The value written the I/O port.
  96
  97 **/
  98 UINT8
  99 EFIAPI
 100 TdIoWrite8 (
 101   IN      UINTN  Port,
 102   IN      UINT8  Value
 103   )
 104 {
 105   ASSERT (FALSE);
 106   return 0;
 107 }
 108
 109 /**
 110   Writes a 16-bit I/O port.
 111
 112   TDVMCALL_IO is invoked to write I/O port.
 113
 114   @param  Port  The I/O port to write.
 115   @param  Value The value to write to the I/O port.
 116
 117   @return The value written the I/O port.
 118
 119 **/
 120 UINT16
 121 EFIAPI
 122 TdIoWrite16 (
 123   IN      UINTN   Port,
 124   IN      UINT16  Value
 125   )
 126 {
 127   ASSERT (FALSE);
 128   return 0;
 129 }
 130
 131 /**
 132   Writes a 32-bit I/O port.
 133
 134   TDVMCALL_IO is invoked to write I/O port.
 135
 136   @param  Port  The I/O port to write.
 137   @param  Value The value to write to the I/O port.
 138
 139   @return The value written the I/O port.
 140
 141 **/
 142 UINT32
 143 EFIAPI
 144 TdIoWrite32 (
 145   IN      UINTN   Port,
 146   IN      UINT32  Value
 147   )
 148 {
 149   ASSERT (FALSE);
 150   return 0;
 151 }
 152
 153 /**
 154   Reads an 8-bit MMIO register.
 155
 156   TDVMCALL_MMIO is invoked to read MMIO registers.
 157
 158   @param  Address The MMIO register to read.
 159
 160   @return The value read.
 161
 162 **/
 163 UINT8
 164 EFIAPI
 165 TdMmioRead8 (
 166   IN      UINTN  Address
 167   )
 168 {
 169   ASSERT (FALSE);
 170   return 0;
 171 }
 172
 173 /**
 174   Writes an 8-bit MMIO register.
 175
 176   TDVMCALL_MMIO is invoked to read write registers.
 177
 178   @param  Address The MMIO register to write.
 179   @param  Value   The value to write to the MMIO register.
 180
 181   @return Value.
 182
 183 **/
 184 UINT8
 185 EFIAPI
 186 TdMmioWrite8 (
 187   IN      UINTN  Address,
 188   IN      UINT8  Val
 189   )
 190 {
 191   ASSERT (FALSE);
 192   return 0;
 193 }
 194
 195 /**
 196   Reads a 16-bit MMIO register.
 197
 198   TDVMCALL_MMIO is invoked to read MMIO registers.
 199
 200   @param  Address The MMIO register to read.
 201
 202   @return The value read.
 203
 204 **/
 205 UINT16
 206 EFIAPI
 207 TdMmioRead16 (
 208   IN      UINTN  Address
 209   )
 210 {
 211   ASSERT (FALSE);
 212   return 0;
 213 }
 214
 215 /**
 216   Writes a 16-bit MMIO register.
 217
 218   TDVMCALL_MMIO is invoked to write MMIO registers.
 219
 220   @param  Address The MMIO register to write.
 221   @param  Value   The value to write to the MMIO register.
 222
 223   @return Value.
 224
 225 **/
 226 UINT16
 227 EFIAPI
 228 TdMmioWrite16 (
 229   IN      UINTN   Address,
 230   IN      UINT16  Val
 231   )
 232 {
 233   ASSERT (FALSE);
 234   return 0;
 235 }
 236
 237 /**
 238   Reads a 32-bit MMIO register.
 239
 240   TDVMCALL_MMIO is invoked to read MMIO registers.
 241
 242   @param  Address The MMIO register to read.
 243
 244   @return The value read.
 245
 246 **/
 247 UINT32
 248 EFIAPI
 249 TdMmioRead32 (
 250   IN      UINTN  Address
 251   )
 252 {
 253   ASSERT (FALSE);
 254   return 0;
 255 }
 256
 257 /**
 258   Writes a 32-bit MMIO register.
 259
 260   TDVMCALL_MMIO is invoked to write MMIO registers.
 261
 262   @param  Address The MMIO register to write.
 263   @param  Value   The value to write to the MMIO register.
 264
 265   @return Value.
 266
 267 **/
 268 UINT32
 269 EFIAPI
 270 TdMmioWrite32 (
 271   IN      UINTN   Address,
 272   IN      UINT32  Val
 273   )
 274 {
 275   ASSERT (FALSE);
 276   return 0;
 277 }
 278
 279 /**
 280   Reads a 64-bit MMIO register.
 281
 282   TDVMCALL_MMIO is invoked to read MMIO registers.
 283
 284   @param  Address The MMIO register to read.
 285
 286   @return The value read.
 287
 288 **/
 289 UINT64
 290 EFIAPI
 291 TdMmioRead64 (
 292   IN      UINTN  Address
 293   )
 294 {
 295   ASSERT (FALSE);
 296   return 0;
 297 }
 298
 299 /**
 300   Writes a 64-bit MMIO register.
 301
 302   TDVMCALL_MMIO is invoked to write MMIO registers.
 303
 304   @param  Address The MMIO register to write.
 305   @param  Value   The value to write to the MMIO register.
 306
 307 **/
 308 UINT64
 309 EFIAPI
 310 TdMmioWrite64 (
 311   IN      UINTN   Address,
 312   IN      UINT64  Value
 313   )
 314 {
 315   ASSERT (FALSE);
 316   return 0;
 317 }
 318
 319 /**
 320   Reads an 8-bit I/O port fifo into a block of memory.
 321
 322   Reads the 8-bit I/O fifo port specified by Port.
 323   The port is read Count times, and the read data is
 324   stored in the provided Buffer.
 325
 326   This function must guarantee that all I/O read and write operations are
 327   serialized.
 328
 329   If 8-bit I/O port operations are not supported, then ASSERT().
 330
 331   In TDX a serial of TdIoRead8 is invoked to read the I/O port fifo.
 332
 333   @param  Port    The I/O port to read.
 334   @param  Count   The number of times to read I/O port.
 335   @param  Buffer  The buffer to store the read data into.
 336
 337 **/
 338 VOID
 339 EFIAPI
 340 TdIoReadFifo8 (
 341   IN      UINTN  Port,
 342   IN      UINTN  Count,
 343   OUT     VOID   *Buffer
 344   )
 345 {
 346   ASSERT (FALSE);
 347 }
 348
 349 /**
 350   Writes a block of memory into an 8-bit I/O port fifo.
 351
 352   Writes the 8-bit I/O fifo port specified by Port.
 353   The port is written Count times, and the write data is
 354   retrieved from the provided Buffer.
 355
 356   This function must guarantee that all I/O write and write operations are
 357   serialized.
 358
 359   If 8-bit I/O port operations are not supported, then ASSERT().
 360
 361   In TDX a serial of TdIoWrite8 is invoked to write data to the I/O port.
 362
 363   @param  Port    The I/O port to write.
 364   @param  Count   The number of times to write I/O port.
 365   @param  Buffer  The buffer to retrieve the write data from.
 366
 367 **/
 368 VOID
 369 EFIAPI
 370 TdIoWriteFifo8 (
 371   IN      UINTN  Port,
 372   IN      UINTN  Count,
 373   IN      VOID   *Buffer
 374   )
 375 {
 376   ASSERT (FALSE);
 377 }
 378
 379 /**
 380   Reads a 16-bit I/O port fifo into a block of memory.
 381
 382   Reads the 16-bit I/O fifo port specified by Port.
 383   The port is read Count times, and the read data is
 384   stored in the provided Buffer.
 385
 386   This function must guarantee that all I/O read and write operations are
 387   serialized.
 388
 389   If 16-bit I/O port operations are not supported, then ASSERT().
 390
 391   In TDX a serial of TdIoRead16 is invoked to read data from the I/O port.
 392
 393   @param  Port    The I/O port to read.
 394   @param  Count   The number of times to read I/O port.
 395   @param  Buffer  The buffer to store the read data into.
 396
 397 **/
 398 VOID
 399 EFIAPI
 400 TdIoReadFifo16 (
 401   IN      UINTN  Port,
 402   IN      UINTN  Count,
 403   OUT     VOID   *Buffer
 404   )
 405 {
 406   ASSERT (FALSE);
 407 }
 408
 409 /**
 410   Writes a block of memory into a 16-bit I/O port fifo.
 411
 412   Writes the 16-bit I/O fifo port specified by Port.
 413   The port is written Count times, and the write data is
 414   retrieved from the provided Buffer.
 415
 416   This function must guarantee that all I/O write and write operations are
 417   serialized.
 418
 419   If 16-bit I/O port operations are not supported, then ASSERT().
 420
 421   In TDX a serial of TdIoWrite16 is invoked to write data to the I/O port.
 422
 423   @param  Port    The I/O port to write.
 424   @param  Count   The number of times to write I/O port.
 425   @param  Buffer  The buffer to retrieve the write data from.
 426
 427 **/
 428 VOID
 429 EFIAPI
 430 TdIoWriteFifo16 (
 431   IN      UINTN  Port,
 432   IN      UINTN  Count,
 433   IN      VOID   *Buffer
 434   )
 435 {
 436   ASSERT (FALSE);
 437 }
 438
 439 /**
 440   Reads a 32-bit I/O port fifo into a block of memory.
 441
 442   Reads the 32-bit I/O fifo port specified by Port.
 443   The port is read Count times, and the read data is
 444   stored in the provided Buffer.
 445
 446   This function must guarantee that all I/O read and write operations are
 447   serialized.
 448
 449   If 32-bit I/O port operations are not supported, then ASSERT().
 450
 451   In TDX a serial of TdIoRead32 is invoked to read data from the I/O port.
 452
 453   @param  Port    The I/O port to read.
 454   @param  Count   The number of times to read I/O port.
 455   @param  Buffer  The buffer to store the read data into.
 456
 457 **/
 458 VOID
 459 EFIAPI
 460 TdIoReadFifo32 (
 461   IN      UINTN  Port,
 462   IN      UINTN  Count,
 463   OUT     VOID   *Buffer
 464   )
 465 {
 466   ASSERT (FALSE);
 467 }
 468
 469 /**
 470   Writes a block of memory into a 32-bit I/O port fifo.
 471
 472   Writes the 32-bit I/O fifo port specified by Port.
 473   The port is written Count times, and the write data is
 474   retrieved from the provided Buffer.
 475
 476   This function must guarantee that all I/O write and write operations are
 477   serialized.
 478
 479   If 32-bit I/O port operations are not supported, then ASSERT().
 480
 481   In TDX a serial of TdIoWrite32 is invoked to write data to the I/O port.
 482
 483   @param  Port    The I/O port to write.
 484   @param  Count   The number of times to write I/O port.
 485   @param  Buffer  The buffer to retrieve the write data from.
 486
 487 **/
 488 VOID
 489 EFIAPI
 490 TdIoWriteFifo32 (
 491   IN      UINTN  Port,
 492   IN      UINTN  Count,
 493   IN      VOID   *Buffer
 494   )
 495 {
 496   ASSERT (FALSE);
 497 }