IntelFramdworkModulePkg/LegacyBios: Add IoMmu Support.

If IOMMU is enabled, the legacy BIOS need allow the legacy memory
access by the legacy device.
The legacy memory is below 1M memory and HighPmm memory.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
index 4ca412a34496493e8e47d68495b6f70c267029c7..48473a07131c4f6999cbe5b242fd75a55c77f2f3 100644 (file)
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosDxe.inf
@@ -137,6 +137,7 @@
   gEfiLegacyBiosProtocolGuid                    ## PRODUCES\r
   gEfiSerialIoProtocolGuid                      ## CONSUMES\r
   gEfiSioProtocolGuid                           ## CONSUMES\r
   gEfiLegacyBiosProtocolGuid                    ## PRODUCES\r
   gEfiSerialIoProtocolGuid                      ## CONSUMES\r
   gEfiSioProtocolGuid                           ## CONSUMES\r

+  gEdkiiIoMmuProtocolGuid                       ## CONSUMES\r

 \r
 [Pcd]\r
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLegacyBiosCacheLegacyRegion  ## CONSUMES\r
 \r
 [Pcd]\r
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdLegacyBiosCacheLegacyRegion  ## CONSUMES\r

diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
index 069646b5188f40599f7714b5f064318c94240cc3..fe9dd7463ab05d03e02e0d64c8b238ffab131f85 100644 (file)
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBiosInterface.h
@@ -47,6 +47,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/PciRootBridgeIo.h>\r
 #include <Protocol/SerialIo.h>\r
 #include <Protocol/SuperIo.h>\r
 #include <Protocol/PciRootBridgeIo.h>\r
 #include <Protocol/SerialIo.h>\r
 #include <Protocol/SuperIo.h>\r

+#include <Protocol/IoMmu.h>\r

 \r
 #include <Library/BaseLib.h>\r
 #include <Library/DebugLib.h>\r
 \r
 #include <Library/BaseLib.h>\r
 #include <Library/DebugLib.h>\r

diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyPci.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyPci.c
index c4c77ec344a0399b957b559bc5d43035f6c1c052..8ffdf0c1ff9551ad06f0bc8070b3d26243d3b442 100644 (file)
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyPci.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyPci.c
@@ -41,7 +41,7 @@ BOOLEAN                             mIgnoreBbsUpdateFlag;
 BOOLEAN                             mVgaInstallationInProgress  = FALSE;\r
 UINT32                              mRomCount                   = 0x00;\r
 ROM_INSTANCE_ENTRY                  mRomEntry[ROM_MAX_ENTRIES];\r
 BOOLEAN                             mVgaInstallationInProgress  = FALSE;\r
 UINT32                              mRomCount                   = 0x00;\r
 ROM_INSTANCE_ENTRY                  mRomEntry[ROM_MAX_ENTRIES];\r

-\r
+EDKII_IOMMU_PROTOCOL                *mIoMmu;\r

 \r
 /**\r
   Query shadowed legacy ROM parameters registered by RomShadow() previously.\r
 \r
 /**\r
   Query shadowed legacy ROM parameters registered by RomShadow() previously.\r


@@ -2696,6 +2696,61 @@ Done:
   return Status;\r
 }\r
 \r
   return Status;\r
 }\r
 \r

+/**\r
+  Let IOMMU grant DMA access for the PCI device.\r
+\r
+  @param  PciHandle             The EFI handle for the PCI device.\r
+  @param  HostAddress           The system memory address to map to the PCI controller.\r
+  @param  NumberOfBytes         The number of bytes to map.\r
+\r
+  @retval EFI_SUCCESS  The DMA access is granted.\r
+**/\r
+EFI_STATUS\r
+IoMmuGrantAccess (\r
+  IN  EFI_HANDLE                        PciHandle,\r
+  IN  EFI_PHYSICAL_ADDRESS              HostAddress,\r
+  IN  UINTN                             NumberOfBytes\r
+  )\r
+{\r
+  EFI_PHYSICAL_ADDRESS            DeviceAddress;\r
+  VOID                            *Mapping;\r
+  EFI_STATUS                      Status;\r
+\r
+  if (PciHandle == NULL) {\r
+    return EFI_UNSUPPORTED;\r
+  }\r
+\r
+  Status = EFI_SUCCESS;\r
+  if (mIoMmu == NULL) {\r
+    gBS->LocateProtocol (&gEdkiiIoMmuProtocolGuid, NULL, (VOID **)&mIoMmu);\r
+  }\r
+  if (mIoMmu != NULL) {\r
+    Status = mIoMmu->Map (\r
+                       mIoMmu,\r
+                       EdkiiIoMmuOperationBusMasterCommonBuffer,\r
+                       (VOID *)(UINTN)HostAddress,\r
+                       &NumberOfBytes,\r
+                       &DeviceAddress,\r
+                       &Mapping\r
+                       );\r
+    if (EFI_ERROR(Status)) {\r
+      DEBUG ((DEBUG_ERROR, "LegacyPci - IoMmuMap - %r\n", Status));\r
+    } else {\r
+      ASSERT (DeviceAddress == HostAddress);\r
+      Status = mIoMmu->SetAttribute (\r
+                         mIoMmu,\r
+                         PciHandle,\r
+                         Mapping,\r
+                         EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE\r
+                         );\r
+      if (EFI_ERROR(Status)) {\r
+        DEBUG ((DEBUG_ERROR, "LegacyPci - IoMmuSetAttribute - %r\n", Status));\r
+      }\r
+    }\r
+  }\r
+  return Status;\r
+}\r
+\r

 /**\r
   Load a legacy PC-AT OPROM on the PciHandle device. Return information\r
   about how many disks were added by the OPROM and the shadow address and\r
 /**\r
   Load a legacy PC-AT OPROM on the PciHandle device. Return information\r
   about how many disks were added by the OPROM and the shadow address and\r


@@ -2978,6 +3033,21 @@ LegacyBiosInstallPciRom (
       RuntimeImageLength = Pcir->MaxRuntimeImageLength * 512;\r
     }\r
   }\r
       RuntimeImageLength = Pcir->MaxRuntimeImageLength * 512;\r
     }\r
   }\r

+\r
+  //\r
+  // Grant access for below 1M\r
+  // BDA/EBDA/LowPMM and scratch memory for OPROM.\r
+  //\r
+  IoMmuGrantAccess (PciHandle, 0, SIZE_1MB);\r
+  //\r
+  // Grant access for HiPmm\r
+  //\r
+  IoMmuGrantAccess (\r
+    PciHandle,\r
+    Private->IntThunk->EfiToLegacy16InitTable.HiPmmMemory,\r
+    Private->IntThunk->EfiToLegacy16InitTable.HiPmmMemorySizeInBytes\r
+    );\r
+\r

   //\r
   // Shadow and initialize the OpROM.\r
   //\r
   //\r
   // Shadow and initialize the OpROM.\r
   //\r