From: qwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 12 Mar 2007 07:47:33 +0000 (+0000)
Subject: Add a lock to protect the critical region in Service APIs for gEfiBlockIoProtocolGuid... 
X-Git-Tag: edk2-stable201903~23443
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=c094abe5852057ef47941d8de3af20b2286cd822

Add a lock to protect the critical region in Service APIs for gEfiBlockIoProtocolGuid Protocol to prevent re-entrance of the same API from from different TPL level.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2443 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/EdkModulePkg/Bus/Pci/IdeBus/Dxe/idebus.c b/EdkModulePkg/Bus/Pci/IdeBus/Dxe/idebus.c
index 42d71b5c22..c1c14052f1 100644
--- a/EdkModulePkg/Bus/Pci/IdeBus/Dxe/idebus.c
+++ b/EdkModulePkg/Bus/Pci/IdeBus/Dxe/idebus.c
@@ -1035,6 +1035,9 @@ IDEBlkIoReset (
 {
   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
   EFI_STATUS      Status;
+  EFI_TPL         OldTpl;
+
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
 
   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (This);
   //
@@ -1047,11 +1050,13 @@ IDEBlkIoReset (
   //
   if (IdeBlkIoDevice->Type == IdeHardDisk ||
       IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
-    return AtaSoftReset (IdeBlkIoDevice);
+    Status = AtaSoftReset (IdeBlkIoDevice);
+    goto Done;
   }
 
   if (IdeBlkIoDevice->Type == IdeUnknown) {
-    return EFI_DEVICE_ERROR;
+    Status = EFI_DEVICE_ERROR;
+    goto Done;
   }
   
   //
@@ -1062,6 +1067,8 @@ IDEBlkIoReset (
     Status = AtaSoftReset (IdeBlkIoDevice);
   }
 
+Done:
+  gBS->RestoreTPL (OldTpl);
   return Status;
 }
 
@@ -1089,6 +1096,10 @@ IDEBlkIoReadBlocks (
 // TODO:    EFI_DEVICE_ERROR - add return value to function comment
 {
   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
+  EFI_STATUS      Status;
+  EFI_TPL         OldTpl;
+
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
 
   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (This);
 
@@ -1102,23 +1113,25 @@ IDEBlkIoReadBlocks (
   //
   if (IdeBlkIoDevice->Type == IdeHardDisk ||
       IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
-    return AtaBlkIoReadBlocks (
+    Status = AtaBlkIoReadBlocks (
             IdeBlkIoDevice,
             MediaId,
             LBA,
             BufferSize,
             Buffer
             );
+    goto Done;
   }
 
   if (IdeBlkIoDevice->Type == IdeUnknown) {
-    return EFI_DEVICE_ERROR;
+    Status = EFI_DEVICE_ERROR;
+    goto Done;
   }
   
   //
   // for ATAPI device, using ATAPI read block's mechanism
   //
-  return AtapiBlkIoReadBlocks (
+  Status = AtapiBlkIoReadBlocks (
           IdeBlkIoDevice,
           MediaId,
           LBA,
@@ -1126,6 +1139,10 @@ IDEBlkIoReadBlocks (
           Buffer
           );
 
+Done:
+  gBS->RestoreTPL (OldTpl);
+
+  return Status;
 }
 
 /**
@@ -1152,7 +1169,11 @@ IDEBlkIoWriteBlocks (
 // TODO:    EFI_DEVICE_ERROR - add return value to function comment
 {
   IDE_BLK_IO_DEV  *IdeBlkIoDevice;
+  EFI_STATUS      Status;
+  EFI_TPL         OldTpl;
 
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
+  
   IdeBlkIoDevice = IDE_BLOCK_IO_DEV_FROM_THIS (This);
   //
   // Requery IDE IO resources in case of the switch of native and legacy modes
@@ -1165,29 +1186,35 @@ IDEBlkIoWriteBlocks (
   if (IdeBlkIoDevice->Type == IdeHardDisk ||
       IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {        
 
-    return AtaBlkIoWriteBlocks (
+    Status = AtaBlkIoWriteBlocks (
             IdeBlkIoDevice,
             MediaId,
             LBA,
             BufferSize,
             Buffer
             );
+    goto Done;
   }
 
   if (IdeBlkIoDevice->Type == IdeUnknown) {
-    return EFI_DEVICE_ERROR;
+    Status = EFI_DEVICE_ERROR;
+    goto Done;
   }
   
   //
   // for ATAPI device, using ATAPI write block's mechanism
   //
-  return AtapiBlkIoWriteBlocks (
+  Status = AtapiBlkIoWriteBlocks (
           IdeBlkIoDevice,
           MediaId,
           LBA,
           BufferSize,
           Buffer
           );
+  
+Done:
+  gBS->RestoreTPL (OldTpl);
+  return Status;
 }
 
 //
diff --git a/EdkModulePkg/Bus/Scsi/ScsiDisk/Dxe/ScsiDisk.c b/EdkModulePkg/Bus/Scsi/ScsiDisk/Dxe/ScsiDisk.c
index a3f4d6a3b6..9eac2c474d 100644
--- a/EdkModulePkg/Bus/Scsi/ScsiDisk/Dxe/ScsiDisk.c
+++ b/EdkModulePkg/Bus/Scsi/ScsiDisk/Dxe/ScsiDisk.c
@@ -1,6 +1,6 @@
 /*++
 
-Copyright (c) 2006, Intel Corporation                                                         
+Copyright (c) 2006 - 2007, Intel Corporation                                                         
 All rights reserved. This program and the accompanying materials                          
 are licensed and made available under the terms and conditions of the BSD License         
 which accompanies this distribution.  The full text of the license may be found at        
@@ -332,17 +332,22 @@ Returns:
 {
   SCSI_DISK_DEV *ScsiDiskDevice;
   EFI_STATUS    Status;
+  EFI_TPL       OldTpl;
+
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
 
   ScsiDiskDevice  = SCSI_DISK_DEV_FROM_THIS (This);
 
   Status          = ScsiDiskDevice->ScsiIo->ResetDevice (ScsiDiskDevice->ScsiIo);
 
   if (!ExtendedVerification) {
-    return Status;
+    goto Done;
   }
 
   Status = ScsiDiskDevice->ScsiIo->ResetBus (ScsiDiskDevice->ScsiIo);
 
+Done:
+  gBS->RestoreTPL (OldTpl);
   return Status;
 }
 
@@ -389,6 +394,7 @@ Returns:
   UINTN               BlockSize;
   UINTN               NumberOfBlocks;
   BOOLEAN             MediaChange;
+  EFI_TPL             OldTpl;
 
   MediaChange = FALSE;
   if (!Buffer) {
@@ -399,13 +405,16 @@ Returns:
     return EFI_SUCCESS;
   }
 
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
+
   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (This);
 
   if (!IsDeviceFixed (ScsiDiskDevice)) {
 
     Status = ScsiDiskDetectMedia (ScsiDiskDevice, FALSE, &MediaChange);
     if (EFI_ERROR (Status)) {
-      return EFI_DEVICE_ERROR;
+      Status = EFI_DEVICE_ERROR;
+      goto Done;
     }
 
     if (MediaChange) {
@@ -426,27 +435,33 @@ Returns:
   NumberOfBlocks  = BufferSize / BlockSize;
 
   if (!(Media->MediaPresent)) {
-    return EFI_NO_MEDIA;
+    Status = EFI_NO_MEDIA;
+    goto Done;
   }
 
   if (MediaId != Media->MediaId) {
-    return EFI_MEDIA_CHANGED;
+    Status = EFI_MEDIA_CHANGED;
+    goto Done;
   }
 
   if (BufferSize % BlockSize != 0) {
-    return EFI_BAD_BUFFER_SIZE;
+    Status = EFI_BAD_BUFFER_SIZE;
+    goto Done;
   }
 
   if (LBA > Media->LastBlock) {
-    return EFI_INVALID_PARAMETER;
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
   }
 
   if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {
-    return EFI_INVALID_PARAMETER;
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
   }
 
   if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {
-    return EFI_INVALID_PARAMETER;
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
   }
   
   //
@@ -455,6 +470,8 @@ Returns:
   //
   Status = ScsiDiskReadSectors (ScsiDiskDevice, Buffer, LBA, NumberOfBlocks);
 
+Done:
+  gBS->RestoreTPL (OldTpl);
   return Status;
 }
 
@@ -501,6 +518,7 @@ Returns:
   UINTN               BlockSize;
   UINTN               NumberOfBlocks;
   BOOLEAN             MediaChange;
+  EFI_TPL             OldTpl;
 
   MediaChange = FALSE;
   if (!Buffer) {
@@ -511,13 +529,16 @@ Returns:
     return EFI_SUCCESS;
   }
 
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
+
   ScsiDiskDevice = SCSI_DISK_DEV_FROM_THIS (This);
 
   if (!IsDeviceFixed (ScsiDiskDevice)) {
 
     Status = ScsiDiskDetectMedia (ScsiDiskDevice, FALSE, &MediaChange);
     if (EFI_ERROR (Status)) {
-      return EFI_DEVICE_ERROR;
+      Status = EFI_DEVICE_ERROR;
+      goto Done;
     }
 
     if (MediaChange) {
@@ -538,27 +559,33 @@ Returns:
   NumberOfBlocks  = BufferSize / BlockSize;
 
   if (!(Media->MediaPresent)) {
-    return EFI_NO_MEDIA;
+    Status = EFI_NO_MEDIA;
+    goto Done;
   }
 
   if (MediaId != Media->MediaId) {
-    return EFI_MEDIA_CHANGED;
+    Status = EFI_MEDIA_CHANGED;
+    goto Done;
   }
 
   if (BufferSize % BlockSize != 0) {
-    return EFI_BAD_BUFFER_SIZE;
+    Status = EFI_BAD_BUFFER_SIZE;
+    goto Done;
   }
 
   if (LBA > Media->LastBlock) {
-    return EFI_INVALID_PARAMETER;
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
   }
 
   if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {
-    return EFI_INVALID_PARAMETER;
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
   }
 
   if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {
-    return EFI_INVALID_PARAMETER;
+    Status = EFI_INVALID_PARAMETER;
+    goto Done;
   }
   //
   // if all the parameters are valid, then perform read sectors command
@@ -566,6 +593,9 @@ Returns:
   //
   Status = ScsiDiskWriteSectors (ScsiDiskDevice, Buffer, LBA, NumberOfBlocks);
 
+Done:
+  gBS->RestoreTPL (OldTpl);
+  
   return Status;
 }
 
diff --git a/EdkModulePkg/Bus/Usb/UsbMassStorage/Dxe/UsbMassStorage.c b/EdkModulePkg/Bus/Usb/UsbMassStorage/Dxe/UsbMassStorage.c
index 951ab0a186..9caa006715 100644
--- a/EdkModulePkg/Bus/Usb/UsbMassStorage/Dxe/UsbMassStorage.c
+++ b/EdkModulePkg/Bus/Usb/UsbMassStorage/Dxe/UsbMassStorage.c
@@ -1,6 +1,6 @@
 /*++
 
-Copyright (c) 2006, Intel Corporation
+Copyright (c) 2006 - 2007, Intel Corporation
 All rights reserved. This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -350,6 +350,9 @@ USBFloppyReset (
   USB_FLOPPY_DEV          *UsbFloppyDevice;
   EFI_USB_ATAPI_PROTOCOL  *UsbAtapiInterface;
   EFI_STATUS              Status;
+  EFI_TPL                 OldTpl;
+
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
 
   UsbFloppyDevice   = USB_FLOPPY_DEV_FROM_THIS (This);
 
@@ -360,6 +363,8 @@ USBFloppyReset (
   //
   Status = UsbAtapiInterface->UsbAtapiReset (UsbAtapiInterface, ExtendedVerification);
 
+  gBS->RestoreTPL (OldTpl);
+
   return Status;
 }
 
@@ -404,6 +409,7 @@ USBFloppyReadBlocks (
   UINTN               BlockSize;
   UINTN               NumberOfBlocks;
   BOOLEAN             MediaChange;
+  EFI_TPL             OldTpl;
 
   Status          = EFI_SUCCESS;
   MediaChange     = FALSE;
@@ -412,16 +418,16 @@ USBFloppyReadBlocks (
   //
   // Check parameters
   //
-  if (!Buffer) {
-    Status = EFI_INVALID_PARAMETER;
-    goto Done;
+  if (Buffer == NULL) {
+    return EFI_INVALID_PARAMETER;
   }
 
   if (BufferSize == 0) {
-    Status = EFI_SUCCESS;
-    goto Done;
+    return EFI_SUCCESS;
   }
 
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
+
   UsbFloppyTestUnitReady (UsbFloppyDevice);
 
   Status = UsbFloppyDetectMedia (UsbFloppyDevice, &MediaChange);
@@ -485,6 +491,7 @@ USBFloppyReadBlocks (
     if (EFI_ERROR (Status)) {
       This->Reset (This, TRUE);
       Status = EFI_DEVICE_ERROR;
+      goto Done;
     }
 
     if (NumberOfBlocks > BLOCK_UNIT) {
@@ -499,6 +506,7 @@ USBFloppyReadBlocks (
  }
 
  Done:
+  gBS->RestoreTPL (OldTpl);
   return Status;
 }
 
@@ -546,6 +554,7 @@ USBFloppyWriteBlocks (
   UINTN               BlockSize;
   UINTN               NumberOfBlocks;
   BOOLEAN             MediaChange;
+  EFI_TPL             OldTpl;
 
   Status          = EFI_SUCCESS;
   MediaChange     = FALSE;
@@ -555,16 +564,16 @@ USBFloppyWriteBlocks (
   //
   // Check parameters
   //
-  if (!Buffer) {
-    Status = EFI_INVALID_PARAMETER;
-    goto Done;
+  if (Buffer == NULL) {
+    return EFI_INVALID_PARAMETER;
   }
 
   if (BufferSize == 0) {
-    Status = EFI_SUCCESS;
-    goto Done;
+    return EFI_SUCCESS;
   }
 
+  OldTpl = gBS->RaiseTPL (EFI_TPL_CALLBACK);
+
   UsbFloppyTestUnitReady (UsbFloppyDevice);
 
   Status = UsbFloppyDetectMedia (UsbFloppyDevice, &MediaChange);
@@ -633,6 +642,7 @@ USBFloppyWriteBlocks (
     if (EFI_ERROR (Status)) {
       This->Reset (This, TRUE);
       Status = EFI_DEVICE_ERROR;
+      goto Done;
     }
 
     if (NumberOfBlocks > BLOCK_UNIT) {
@@ -647,7 +657,7 @@ USBFloppyWriteBlocks (
  }
 
 Done:
-
+  gBS->RestoreTPL (OldTpl);
   return Status;
 }