IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c

   1 /** @file
   2
   3   Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
   4   This program and the accompanying materials
   5   are licensed and made available under the terms and conditions of the BSD License
   6   which accompanies this distribution.  The full text of the license may be found at
   7   http://opensource.org/licenses/bsd-license.php.
   8
   9   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 **/
  13
  14 #include "DmaProtection.h"
  15
  16 UINTN                            mVtdUnitNumber;
  17 VTD_UNIT_INFORMATION             *mVtdUnitInformation;
  18
  19 BOOLEAN  mVtdEnabled;
  20
  21 /**
  22   Flush VTD page table and context table memory.
  23
  24   This action is to make sure the IOMMU engine can get final data in memory.
  25
  26   @param[in]  VtdIndex          The index used to identify a VTd engine.
  27   @param[in]  Base              The base address of memory to be flushed.
  28   @param[in]  Size              The size of memory in bytes to be flushed.
  29 **/
  30 VOID
  31 FlushPageTableMemory (
  32   IN UINTN  VtdIndex,
  33   IN UINTN  Base,
  34   IN UINTN  Size
  35   )
  36 {
  37   if (mVtdUnitInformation[VtdIndex].ECapReg.Bits.C == 0) {
  38     WriteBackDataCacheRange ((VOID *)Base, Size);
  39   }
  40 }
  41
  42 /**
  43   Flush VTd engine write buffer.
  44
  45   @param[in]  VtdIndex          The index used to identify a VTd engine.
  46 **/
  47 VOID
  48 FlushWriteBuffer (
  49   IN UINTN  VtdIndex
  50   )
  51 {
  52   UINT32  Reg32;
  53
  54   if (mVtdUnitInformation[VtdIndex].CapReg.Bits.RWBF != 0) {
  55     Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GSTS_REG);
  56     MmioWrite32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GCMD_REG, Reg32 | B_GMCD_REG_WBF);
  57     do {
  58       Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GSTS_REG);
  59     } while ((Reg32 & B_GSTS_REG_WBF) != 0);
  60   }
  61 }
  62
  63 /**
  64   Invalidate VTd context cache.
  65
  66   @param[in]  VtdIndex          The index used to identify a VTd engine.
  67 **/
  68 EFI_STATUS
  69 InvalidateContextCache (
  70   IN UINTN  VtdIndex
  71   )
  72 {
  73   UINT64  Reg64;
  74
  75   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_CCMD_REG);
  76   if ((Reg64 & B_CCMD_REG_ICC) != 0) {
  77     DEBUG ((DEBUG_ERROR,"ERROR: InvalidateContextCache: B_CCMD_REG_ICC is set for VTD(%d)\n",VtdIndex));
  78     return EFI_DEVICE_ERROR;
  79   }
  80
  81   Reg64 &= ((~B_CCMD_REG_ICC) & (~B_CCMD_REG_CIRG_MASK));
  82   Reg64 |= (B_CCMD_REG_ICC | V_CCMD_REG_CIRG_GLOBAL);
  83   MmioWrite64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_CCMD_REG, Reg64);
  84
  85   do {
  86     Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_CCMD_REG);
  87   } while ((Reg64 & B_CCMD_REG_ICC) != 0);
  88
  89   return EFI_SUCCESS;
  90 }
  91
  92 /**
  93   Invalidate VTd IOTLB.
  94
  95   @param[in]  VtdIndex          The index used to identify a VTd engine.
  96 **/
  97 EFI_STATUS
  98 InvalidateIOTLB (
  99   IN UINTN  VtdIndex
 100   )
 101 {
 102   UINT64  Reg64;
 103
 104   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + (mVtdUnitInformation[VtdIndex].ECapReg.Bits.IRO * 16) + R_IOTLB_REG);
 105   if ((Reg64 & B_IOTLB_REG_IVT) != 0) {
 106     DEBUG ((DEBUG_ERROR,"ERROR: InvalidateIOTLB: B_IOTLB_REG_IVT is set for VTD(%d)\n", VtdIndex));
 107     return EFI_DEVICE_ERROR;
 108   }
 109
 110   Reg64 &= ((~B_IOTLB_REG_IVT) & (~B_IOTLB_REG_IIRG_MASK));
 111   Reg64 |= (B_IOTLB_REG_IVT | V_IOTLB_REG_IIRG_GLOBAL);
 112   MmioWrite64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + (mVtdUnitInformation[VtdIndex].ECapReg.Bits.IRO * 16) + R_IOTLB_REG, Reg64);
 113
 114   do {
 115     Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + (mVtdUnitInformation[VtdIndex].ECapReg.Bits.IRO * 16) + R_IOTLB_REG);
 116   } while ((Reg64 & B_IOTLB_REG_IVT) != 0);
 117
 118   return EFI_SUCCESS;
 119 }
 120
 121 /**
 122   Invalid VTd global IOTLB.
 123
 124   @param[in]  VtdIndex              The index of VTd engine.
 125
 126   @retval EFI_SUCCESS           VTd global IOTLB is invalidated.
 127   @retval EFI_DEVICE_ERROR      VTd global IOTLB is not invalidated.
 128 **/
 129 EFI_STATUS
 130 InvalidateVtdIOTLBGlobal (
 131   IN UINTN  VtdIndex
 132   )
 133 {
 134   if (!mVtdEnabled) {
 135     return EFI_SUCCESS;
 136   }
 137
 138   DEBUG((DEBUG_VERBOSE, "InvalidateVtdIOTLBGlobal(%d)\n", VtdIndex));
 139
 140   //
 141   // Write Buffer Flush before invalidation
 142   //
 143   FlushWriteBuffer (VtdIndex);
 144
 145   //
 146   // Invalidate the context cache
 147   //
 148   if (mVtdUnitInformation[VtdIndex].HasDirtyContext) {
 149     InvalidateContextCache (VtdIndex);
 150   }
 151
 152   //
 153   // Invalidate the IOTLB cache
 154   //
 155   if (mVtdUnitInformation[VtdIndex].HasDirtyContext || mVtdUnitInformation[VtdIndex].HasDirtyPages) {
 156     InvalidateIOTLB (VtdIndex);
 157   }
 158
 159   return EFI_SUCCESS;
 160 }
 161
 162 /**
 163   Prepare VTD configuration.
 164 **/
 165 VOID
 166 PrepareVtdConfig (
 167   VOID
 168   )
 169 {
 170   UINTN         Index;
 171   UINTN         DomainNumber;
 172
 173   for (Index = 0; Index < mVtdUnitNumber; Index++) {
 174     DEBUG ((DEBUG_INFO, "Dump VTd Capability (%d)\n", Index));
 175     mVtdUnitInformation[Index].CapReg.Uint64 = MmioRead64 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_CAP_REG);
 176     DumpVtdCapRegs (&mVtdUnitInformation[Index].CapReg);
 177     mVtdUnitInformation[Index].ECapReg.Uint64 = MmioRead64 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_ECAP_REG);
 178     DumpVtdECapRegs (&mVtdUnitInformation[Index].ECapReg);
 179
 180     if ((mVtdUnitInformation[Index].CapReg.Bits.SLLPS & BIT0) == 0) {
 181       DEBUG((DEBUG_WARN, "!!!! 2MB super page is not supported on VTD %d !!!!\n", Index));
 182     }
 183     if ((mVtdUnitInformation[Index].CapReg.Bits.SAGAW & BIT2) == 0) {
 184       DEBUG((DEBUG_ERROR, "!!!! 4-level page-table is not supported on VTD %d !!!!\n", Index));
 185       return ;
 186     }
 187
 188     DomainNumber = (UINTN)1 << (UINT8)((UINTN)mVtdUnitInformation[Index].CapReg.Bits.ND * 2 + 4);
 189     if (mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceDataNumber >= DomainNumber) {
 190       DEBUG((DEBUG_ERROR, "!!!! Pci device Number(0x%x) >= DomainNumber(0x%x) !!!!\n", mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceDataNumber, DomainNumber));
 191       return ;
 192     }
 193   }
 194   return ;
 195 }
 196
 197 /**
 198   Disable PMR in all VTd engine.
 199 **/
 200 VOID
 201 DisablePmr (
 202   VOID
 203   )
 204 {
 205   UINT32        Reg32;
 206   VTD_CAP_REG   CapReg;
 207   UINTN         Index;
 208
 209   DEBUG ((DEBUG_INFO,"DisablePmr\n"));
 210   for (Index = 0; Index < mVtdUnitNumber; Index++) {
 211     CapReg.Uint64 = MmioRead64 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_CAP_REG);
 212     if (CapReg.Bits.PLMR == 0 || CapReg.Bits.PHMR == 0) {
 213       continue ;
 214     }
 215
 216     Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
 217     if ((Reg32 & BIT0) != 0) {
 218       MmioWrite32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_PMEN_ENABLE_REG, 0x0);
 219       do {
 220         Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
 221       } while((Reg32 & BIT0) != 0);
 222       DEBUG ((DEBUG_INFO,"Pmr(%d) disabled\n", Index));
 223     } else {
 224       DEBUG ((DEBUG_INFO,"Pmr(%d) not enabled\n", Index));
 225     }
 226   }
 227   return ;
 228 }
 229
 230 /**
 231   Enable DMAR translation.
 232
 233   @retval EFI_SUCCESS           DMAR translation is enabled.
 234   @retval EFI_DEVICE_ERROR      DMAR translation is not enabled.
 235 **/
 236 EFI_STATUS
 237 EnableDmar (
 238   VOID
 239   )
 240 {
 241   UINTN     Index;
 242   UINT32    Reg32;
 243
 244   for (Index = 0; Index < mVtdUnitNumber; Index++) {
 245     DEBUG((DEBUG_INFO, ">>>>>>EnableDmar() for engine [%d] \n", Index));
 246
 247     if (mVtdUnitInformation[Index].ExtRootEntryTable != NULL) {
 248       DEBUG((DEBUG_INFO, "ExtRootEntryTable 0x%x \n", mVtdUnitInformation[Index].ExtRootEntryTable));
 249       MmioWrite64 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_RTADDR_REG, (UINT64)(UINTN)mVtdUnitInformation[Index].ExtRootEntryTable | BIT11);
 250     } else {
 251       DEBUG((DEBUG_INFO, "RootEntryTable 0x%x \n", mVtdUnitInformation[Index].RootEntryTable));
 252       MmioWrite64 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_RTADDR_REG, (UINT64)(UINTN)mVtdUnitInformation[Index].RootEntryTable);
 253     }
 254
 255     MmioWrite32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GCMD_REG, B_GMCD_REG_SRTP);
 256
 257     DEBUG((DEBUG_INFO, "EnableDmar: waiting for RTPS bit to be set... \n"));
 258     do {
 259       Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GSTS_REG);
 260     } while((Reg32 & B_GSTS_REG_RTPS) == 0);
 261
 262     //
 263     // Init DMAr Fault Event and Data registers
 264     //
 265     Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_FEDATA_REG);
 266
 267     //
 268     // Write Buffer Flush before invalidation
 269     //
 270     FlushWriteBuffer (Index);
 271
 272     //
 273     // Invalidate the context cache
 274     //
 275     InvalidateContextCache (Index);
 276
 277     //
 278     // Invalidate the IOTLB cache
 279     //
 280     InvalidateIOTLB (Index);
 281
 282     //
 283     // Enable VTd
 284     //
 285     MmioWrite32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GCMD_REG, B_GMCD_REG_TE);
 286     DEBUG((DEBUG_INFO, "EnableDmar: Waiting B_GSTS_REG_TE ...\n"));
 287     do {
 288       Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GSTS_REG);
 289     } while ((Reg32 & B_GSTS_REG_TE) == 0);
 290
 291     DEBUG ((DEBUG_INFO,"VTD (%d) enabled!<<<<<<\n",Index));
 292   }
 293
 294   //
 295   // Need disable PMR, since we already setup translation table.
 296   //
 297   DisablePmr ();
 298
 299   mVtdEnabled = TRUE;
 300
 301   return EFI_SUCCESS;
 302 }
 303
 304 /**
 305   Disable DMAR translation.
 306
 307   @retval EFI_SUCCESS           DMAR translation is disabled.
 308   @retval EFI_DEVICE_ERROR      DMAR translation is not disabled.
 309 **/
 310 EFI_STATUS
 311 DisableDmar (
 312   VOID
 313   )
 314 {
 315   UINTN     Index;
 316   UINTN     SubIndex;
 317   UINT32    Reg32;
 318
 319   for (Index = 0; Index < mVtdUnitNumber; Index++) {
 320     DEBUG((DEBUG_INFO, ">>>>>>DisableDmar() for engine [%d] \n", Index));
 321
 322     //
 323     // Write Buffer Flush before invalidation
 324     //
 325     FlushWriteBuffer (Index);
 326
 327     //
 328     // Disable VTd
 329     //
 330     MmioWrite32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GCMD_REG, B_GMCD_REG_SRTP);
 331     do {
 332       Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GSTS_REG);
 333     } while((Reg32 & B_GSTS_REG_RTPS) == 0);
 334
 335     Reg32 = MmioRead32 (mVtdUnitInformation[Index].VtdUnitBaseAddress + R_GSTS_REG);
 336     DEBUG((DEBUG_INFO, "DisableDmar: GSTS_REG - 0x%08x\n", Reg32));
 337
 338     DEBUG ((DEBUG_INFO,"VTD (%d) Disabled!<<<<<<\n",Index));
 339   }
 340
 341   mVtdEnabled = FALSE;
 342
 343   for (Index = 0; Index < mVtdUnitNumber; Index++) {
 344     DEBUG((DEBUG_INFO, "engine [%d] access\n", Index));
 345     for (SubIndex = 0; SubIndex < mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceDataNumber; SubIndex++) {
 346       DEBUG ((DEBUG_INFO, "  PCI S%04X B%02x D%02x F%02x - %d\n",
 347         mVtdUnitInformation[Index].Segment,
 348         mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceData[Index].PciSourceId.Bits.Bus,
 349         mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceData[Index].PciSourceId.Bits.Device,
 350         mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceData[Index].PciSourceId.Bits.Function,
 351         mVtdUnitInformation[Index].PciDeviceInfo.PciDeviceData[Index].AccessCount
 352         ));
 353     }
 354   }
 355
 356   return EFI_SUCCESS;
 357 }
 358
 359 /**
 360   Dump VTd capability registers.
 361
 362   @param[in]  CapReg              The capability register.
 363 **/
 364 VOID
 365 DumpVtdCapRegs (
 366   IN VTD_CAP_REG *CapReg
 367   )
 368 {
 369   DEBUG((DEBUG_INFO, "  CapReg:\n", CapReg->Uint64));
 370   DEBUG((DEBUG_INFO, "    ND     - 0x%x\n", CapReg->Bits.ND));
 371   DEBUG((DEBUG_INFO, "    AFL    - 0x%x\n", CapReg->Bits.AFL));
 372   DEBUG((DEBUG_INFO, "    RWBF   - 0x%x\n", CapReg->Bits.RWBF));
 373   DEBUG((DEBUG_INFO, "    PLMR   - 0x%x\n", CapReg->Bits.PLMR));
 374   DEBUG((DEBUG_INFO, "    PHMR   - 0x%x\n", CapReg->Bits.PHMR));
 375   DEBUG((DEBUG_INFO, "    CM     - 0x%x\n", CapReg->Bits.CM));
 376   DEBUG((DEBUG_INFO, "    SAGAW  - 0x%x\n", CapReg->Bits.SAGAW));
 377   DEBUG((DEBUG_INFO, "    MGAW   - 0x%x\n", CapReg->Bits.MGAW));
 378   DEBUG((DEBUG_INFO, "    ZLR    - 0x%x\n", CapReg->Bits.ZLR));
 379   DEBUG((DEBUG_INFO, "    FRO    - 0x%x\n", CapReg->Bits.FRO));
 380   DEBUG((DEBUG_INFO, "    SLLPS  - 0x%x\n", CapReg->Bits.SLLPS));
 381   DEBUG((DEBUG_INFO, "    PSI    - 0x%x\n", CapReg->Bits.PSI));
 382   DEBUG((DEBUG_INFO, "    NFR    - 0x%x\n", CapReg->Bits.NFR));
 383   DEBUG((DEBUG_INFO, "    MAMV   - 0x%x\n", CapReg->Bits.MAMV));
 384   DEBUG((DEBUG_INFO, "    DWD    - 0x%x\n", CapReg->Bits.DWD));
 385   DEBUG((DEBUG_INFO, "    DRD    - 0x%x\n", CapReg->Bits.DRD));
 386   DEBUG((DEBUG_INFO, "    FL1GP  - 0x%x\n", CapReg->Bits.FL1GP));
 387   DEBUG((DEBUG_INFO, "    PI     - 0x%x\n", CapReg->Bits.PI));
 388 }
 389
 390 /**
 391   Dump VTd extended capability registers.
 392
 393   @param[in]  ECapReg              The extended capability register.
 394 **/
 395 VOID
 396 DumpVtdECapRegs (
 397   IN VTD_ECAP_REG *ECapReg
 398   )
 399 {
 400   DEBUG((DEBUG_INFO, "  ECapReg:\n", ECapReg->Uint64));
 401   DEBUG((DEBUG_INFO, "    C      - 0x%x\n", ECapReg->Bits.C));
 402   DEBUG((DEBUG_INFO, "    QI     - 0x%x\n", ECapReg->Bits.QI));
 403   DEBUG((DEBUG_INFO, "    DT     - 0x%x\n", ECapReg->Bits.DT));
 404   DEBUG((DEBUG_INFO, "    IR     - 0x%x\n", ECapReg->Bits.IR));
 405   DEBUG((DEBUG_INFO, "    EIM    - 0x%x\n", ECapReg->Bits.EIM));
 406   DEBUG((DEBUG_INFO, "    PT     - 0x%x\n", ECapReg->Bits.PT));
 407   DEBUG((DEBUG_INFO, "    SC     - 0x%x\n", ECapReg->Bits.SC));
 408   DEBUG((DEBUG_INFO, "    IRO    - 0x%x\n", ECapReg->Bits.IRO));
 409   DEBUG((DEBUG_INFO, "    MHMV   - 0x%x\n", ECapReg->Bits.MHMV));
 410   DEBUG((DEBUG_INFO, "    ECS    - 0x%x\n", ECapReg->Bits.ECS));
 411   DEBUG((DEBUG_INFO, "    MTS    - 0x%x\n", ECapReg->Bits.MTS));
 412   DEBUG((DEBUG_INFO, "    NEST   - 0x%x\n", ECapReg->Bits.NEST));
 413   DEBUG((DEBUG_INFO, "    DIS    - 0x%x\n", ECapReg->Bits.DIS));
 414   DEBUG((DEBUG_INFO, "    PASID  - 0x%x\n", ECapReg->Bits.PASID));
 415   DEBUG((DEBUG_INFO, "    PRS    - 0x%x\n", ECapReg->Bits.PRS));
 416   DEBUG((DEBUG_INFO, "    ERS    - 0x%x\n", ECapReg->Bits.ERS));
 417   DEBUG((DEBUG_INFO, "    SRS    - 0x%x\n", ECapReg->Bits.SRS));
 418   DEBUG((DEBUG_INFO, "    NWFS   - 0x%x\n", ECapReg->Bits.NWFS));
 419   DEBUG((DEBUG_INFO, "    EAFS   - 0x%x\n", ECapReg->Bits.EAFS));
 420   DEBUG((DEBUG_INFO, "    PSS    - 0x%x\n", ECapReg->Bits.PSS));
 421 }
 422
 423 /**
 424   Dump VTd registers.
 425
 426   @param[in]  VtdIndex              The index of VTd engine.
 427 **/
 428 VOID
 429 DumpVtdRegs (
 430   IN UINTN  VtdIndex
 431   )
 432 {
 433   UINTN         Index;
 434   UINT64        Reg64;
 435   VTD_FRCD_REG  FrcdReg;
 436   VTD_CAP_REG   CapReg;
 437   UINT32        Reg32;
 438   VTD_SOURCE_ID SourceId;
 439
 440   DEBUG((DEBUG_INFO, "#### DumpVtdRegs(%d) Begin ####\n", VtdIndex));
 441
 442   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_VER_REG);
 443   DEBUG((DEBUG_INFO, "  VER_REG     - 0x%08x\n", Reg32));
 444
 445   CapReg.Uint64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_CAP_REG);
 446   DEBUG((DEBUG_INFO, "  CAP_REG     - 0x%016lx\n", CapReg.Uint64));
 447
 448   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_ECAP_REG);
 449   DEBUG((DEBUG_INFO, "  ECAP_REG    - 0x%016lx\n", Reg64));
 450
 451   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GSTS_REG);
 452   DEBUG((DEBUG_INFO, "  GSTS_REG    - 0x%08x \n", Reg32));
 453
 454   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_RTADDR_REG);
 455   DEBUG((DEBUG_INFO, "  RTADDR_REG  - 0x%016lx\n", Reg64));
 456
 457   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_CCMD_REG);
 458   DEBUG((DEBUG_INFO, "  CCMD_REG    - 0x%016lx\n", Reg64));
 459
 460   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_FSTS_REG);
 461   DEBUG((DEBUG_INFO, "  FSTS_REG    - 0x%08x\n", Reg32));
 462
 463   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_FECTL_REG);
 464   DEBUG((DEBUG_INFO, "  FECTL_REG   - 0x%08x\n", Reg32));
 465
 466   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_FEDATA_REG);
 467   DEBUG((DEBUG_INFO, "  FEDATA_REG  - 0x%08x\n", Reg32));
 468
 469   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_FEADDR_REG);
 470   DEBUG((DEBUG_INFO, "  FEADDR_REG  - 0x%08x\n",Reg32));
 471
 472   Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_FEUADDR_REG);
 473   DEBUG((DEBUG_INFO, "  FEUADDR_REG - 0x%08x\n",Reg32));
 474
 475   for (Index = 0; Index < (UINTN)CapReg.Bits.NFR + 1; Index++) {
 476     FrcdReg.Uint64[0] = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + ((CapReg.Bits.FRO * 16) + (Index * 16) + R_FRCD_REG));
 477     FrcdReg.Uint64[1] = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + ((CapReg.Bits.FRO * 16) + (Index * 16) + R_FRCD_REG + sizeof(UINT64)));
 478     DEBUG((DEBUG_INFO, "  FRCD_REG[%d] - 0x%016lx %016lx\n", Index, FrcdReg.Uint64[1], FrcdReg.Uint64[0]));
 479     if (FrcdReg.Uint64[1] != 0 || FrcdReg.Uint64[0] != 0) {
 480       DEBUG((DEBUG_INFO, "    Fault Info - 0x%016lx\n", VTD_64BITS_ADDRESS(FrcdReg.Bits.FILo, FrcdReg.Bits.FIHi)));
 481       SourceId.Uint16 = (UINT16)FrcdReg.Bits.SID;
 482       DEBUG((DEBUG_INFO, "    Source - B%02x D%02x F%02x\n", SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
 483       DEBUG((DEBUG_INFO, "    Type - %x (%a)\n", FrcdReg.Bits.T, FrcdReg.Bits.T ? "read" : "write"));
 484       DEBUG((DEBUG_INFO, "    Reason - %x (Refer to VTd Spec, Appendix A)\n", FrcdReg.Bits.FR));
 485     }
 486   }
 487
 488   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + (mVtdUnitInformation[VtdIndex].ECapReg.Bits.IRO * 16) + R_IVA_REG);
 489   DEBUG((DEBUG_INFO, "  IVA_REG     - 0x%016lx\n",Reg64));
 490
 491   Reg64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + (mVtdUnitInformation[VtdIndex].ECapReg.Bits.IRO * 16) + R_IOTLB_REG);
 492   DEBUG((DEBUG_INFO, "  IOTLB_REG   - 0x%016lx\n",Reg64));
 493
 494   DEBUG((DEBUG_INFO, "#### DumpVtdRegs(%d) End ####\n", VtdIndex));
 495 }
 496
 497 /**
 498   Dump VTd registers for all VTd engine.
 499 **/
 500 VOID
 501 DumpVtdRegsAll (
 502   VOID
 503   )
 504 {
 505   UINTN       Num;
 506
 507   for (Num = 0; Num < mVtdUnitNumber; Num++) {
 508     DumpVtdRegs (Num);
 509   }
 510 }
 511
 512 /**
 513   Dump VTd registers if there is error.
 514 **/
 515 VOID
 516 DumpVtdIfError (
 517   VOID
 518   )
 519 {
 520   UINTN         Num;
 521   UINTN         Index;
 522   VTD_FRCD_REG  FrcdReg;
 523   VTD_CAP_REG   CapReg;
 524   UINT32        Reg32;
 525   BOOLEAN       HasError;
 526
 527   for (Num = 0; Num < mVtdUnitNumber; Num++) {
 528     HasError = FALSE;
 529     Reg32 = MmioRead32 (mVtdUnitInformation[Num].VtdUnitBaseAddress + R_FSTS_REG);
 530     if (Reg32 != 0) {
 531       HasError = TRUE;
 532     }
 533     Reg32 = MmioRead32 (mVtdUnitInformation[Num].VtdUnitBaseAddress + R_FECTL_REG);
 534     if ((Reg32 & BIT30) != 0) {
 535       HasError = TRUE;
 536     }
 537
 538     CapReg.Uint64 = MmioRead64 (mVtdUnitInformation[Num].VtdUnitBaseAddress + R_CAP_REG);
 539     for (Index = 0; Index < (UINTN)CapReg.Bits.NFR + 1; Index++) {
 540       FrcdReg.Uint64[0] = MmioRead64 (mVtdUnitInformation[Num].VtdUnitBaseAddress + ((CapReg.Bits.FRO * 16) + (Index * 16) + R_FRCD_REG));
 541       FrcdReg.Uint64[1] = MmioRead64 (mVtdUnitInformation[Num].VtdUnitBaseAddress + ((CapReg.Bits.FRO * 16) + (Index * 16) + R_FRCD_REG + sizeof(UINT64)));
 542       if (FrcdReg.Bits.F != 0) {
 543         HasError = TRUE;
 544       }
 545     }
 546
 547     if (HasError) {
 548       DEBUG((DEBUG_INFO, "\n#### ERROR ####\n"));
 549       DumpVtdRegs (Num);
 550       DEBUG((DEBUG_INFO, "#### ERROR ####\n\n"));
 551       //
 552       // Clear
 553       //
 554       for (Index = 0; Index < (UINTN)CapReg.Bits.NFR + 1; Index++) {
 555         FrcdReg.Uint64[1] = MmioRead64 (mVtdUnitInformation[Num].VtdUnitBaseAddress + ((CapReg.Bits.FRO * 16) + (Index * 16) + R_FRCD_REG + sizeof(UINT64)));
 556         if (FrcdReg.Bits.F != 0) {
 557           //
 558           // Software writes the value read from this field (F) to Clear it.
 559           //
 560           MmioWrite64 (mVtdUnitInformation[Num].VtdUnitBaseAddress + ((CapReg.Bits.FRO * 16) + (Index * 16) + R_FRCD_REG + sizeof(UINT64)), FrcdReg.Uint64[1]);
 561         }
 562       }
 563       MmioWrite32 (mVtdUnitInformation[Num].VtdUnitBaseAddress + R_FSTS_REG, MmioRead32 (mVtdUnitInformation[Num].VtdUnitBaseAddress + R_FSTS_REG));
 564     }
 565   }
 566 }