Save original PCI attributes in start() function and restore it in Stop().

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4324 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 70 insertions, 54 deletions

diff --git a/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.c b/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.c
index bfa121b..eb5ce3b 100644
--- a/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.c
+++ b/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.c
@@ -4,21 +4,21 @@
   Protocols for the Cirrus Logic 5430 family of PCI video controllers.

   This driver is only usable in the EFI pre-boot environment.

   This sample is intended to show how the UGA Draw and Graphics output Protocol

-  is able to function. 

+  is able to function.

   The UGA I/O Protocol is not implemented in this sample.

   A fully compliant EFI UGA driver requires both

   the UGA Draw and the UGA I/O Protocol.  Please refer to Microsoft's

   documentation on UGA for details on how to write a UGA driver that is able

   to function both in the EFI pre-boot environment and from the OS runtime.

 

-  Copyright (c) 2006, 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        

-  http://opensource.org/licenses/bsd-license.php                                            

+  Copyright (c) 2006, 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

+  http://opensource.org/licenses/bsd-license.php

 

-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     

-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

 

 **/

 

@@ -40,8 +40,8 @@ EFI_DRIVER_BINDING_PROTOCOL gCirrusLogic5430DriverBinding = {
 /// Generic Attribute Controller Register Settings

 ///

 UINT8  AttributeController[21] = {

-  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 

-  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 

+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,

+  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,

   0x41, 0x00, 0x0F, 0x00, 0x00

 };

 

@@ -57,13 +57,13 @@ UINT8 GraphicsController[9] = {
 //

 UINT8 Crtc_640_480_256_60[28] = {

   0x5d, 0x4f, 0x50, 0x82, 0x53, 0x9f, 0x00, 0x3e,

-  0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 

+  0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

   0xe1, 0x83, 0xdf, 0x50, 0x00, 0xe7, 0x04, 0xe3,

   0xff, 0x00, 0x00, 0x22

 };

 

 UINT16 Seq_640_480_256_60[15] = {

-  0x0100, 0x0101, 0x0f02, 0x0003, 0x0e04, 0x1107, 0x0008, 0x4a0b, 

+  0x0100, 0x0101, 0x0f02, 0x0003, 0x0e04, 0x1107, 0x0008, 0x4a0b,

   0x5b0c, 0x450d, 0x7e0e, 0x2b1b, 0x2f1c, 0x301d, 0x331e

 };

 

@@ -71,14 +71,14 @@ UINT16 Seq_640_480_256_60[15] = {
 // 800 x 600 x 256 color @ 60 Hertz

 //

 UINT8 Crtc_800_600_256_60[28] = {

-  0x7F, 0x63, 0x64, 0x80, 0x6B, 0x1B, 0x72, 0xF0, 

-  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 

+  0x7F, 0x63, 0x64, 0x80, 0x6B, 0x1B, 0x72, 0xF0,

+  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

   0x58, 0x8C, 0x57, 0x64, 0x00, 0x5F, 0x91, 0xE3,

   0xFF, 0x00, 0x00, 0x22

 };

 

 UINT16 Seq_800_600_256_60[15] = {

-  0x0100, 0x0101, 0x0f02, 0x0003, 0x0e04, 0x1107, 0x0008, 0x4a0b, 

+  0x0100, 0x0101, 0x0f02, 0x0003, 0x0e04, 0x1107, 0x0008, 0x4a0b,

   0x5b0c, 0x450d, 0x510e, 0x2b1b, 0x2f1c, 0x301d, 0x3a1e

 };

 

@@ -86,14 +86,14 @@ UINT16 Seq_800_600_256_60[15] = {
 // 1024 x 768 x 256 color @ 60 Hertz

 //

 UINT8 Crtc_1024_768_256_60[28] = {

-  0xA3, 0x7F, 0x80, 0x86, 0x85, 0x96, 0x24, 0xFD, 

-  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 

+  0xA3, 0x7F, 0x80, 0x86, 0x85, 0x96, 0x24, 0xFD,

+  0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

   0x02, 0x88, 0xFF, 0x80, 0x00, 0x00, 0x24, 0xE3,

   0xFF, 0x4A, 0x00, 0x22

 };

 

 UINT16 Seq_1024_768_256_60[15] = {

-  0x0100, 0x0101, 0x0f02, 0x0003, 0x0e04, 0x1107, 0x0008, 0x4a0b, 

+  0x0100, 0x0101, 0x0f02, 0x0003, 0x0e04, 0x1107, 0x0008, 0x4a0b,

   0x5b0c, 0x450d, 0x760e, 0x2b1b, 0x2f1c, 0x301d, 0x341e

 };

 

@@ -102,8 +102,8 @@ UINT16 Seq_1024_768_256_60[15] = {
 ///

 CIRRUS_LOGIC_5430_VIDEO_MODES  CirrusLogic5430VideoModes[] = {

   {  640, 480, 8, 60, Crtc_640_480_256_60,  Seq_640_480_256_60,  0xe3 },

-  {  800, 600, 8, 60, Crtc_800_600_256_60,  Seq_800_600_256_60,  0xef }, 

-  { 1024, 768, 8, 60, Crtc_1024_768_256_60, Seq_1024_768_256_60, 0xef } 

+  {  800, 600, 8, 60, Crtc_800_600_256_60,  Seq_800_600_256_60,  0xef },

+  { 1024, 768, 8, 60, Crtc_1024_768_256_60, Seq_1024_768_256_60, 0xef }

 };

 

 /**

@@ -242,6 +242,20 @@ CirrusLogic5430ControllerDriverStart (
     goto Error;

   }

 

+  //

+  // Save original PCI attributes

+  //

+  Status = Private->PciIo->Attributes (

+                    Private->PciIo,

+                    EfiPciIoAttributeOperationGet,

+                    0,

+                    &Private->OriginalPciAttributes

+                    );

+

+  if (EFI_ERROR (Status)) {

+    goto Error;

+  }

+

   Status = Private->PciIo->Attributes (

                             Private->PciIo,

                             EfiPciIoAttributeOperationEnable,

@@ -290,40 +304,42 @@ CirrusLogic5430ControllerDriverStart (
                       &Private->GraphicsOutput,

                       NULL

                       );

-      

+

     } else {

       //

       // This driver must support eithor GOP or UGA or both.

-      // 

+      //

       ASSERT (FALSE);

       Status = EFI_UNSUPPORTED;

     }

   }

-  

+

 

 Error:

   if (EFI_ERROR (Status)) {

     if (Private) {

       if (Private->PciIo) {

+        //

+        // Restore original PCI attributes

+        //

         Private->PciIo->Attributes (

-                          Private->PciIo,

-                          EfiPciIoAttributeOperationDisable,

-                          EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,

-                          NULL

-                          );

+                        Private->PciIo,

+                        EfiPciIoAttributeOperationSet,

+                        Private->OriginalPciAttributes,

+                        NULL

+                        );

+

+        //

+        // Close the PCI I/O Protocol

+        //

+        gBS->CloseProtocol (

+              Private->Handle,

+              &gEfiPciIoProtocolGuid,

+              This->DriverBindingHandle,

+              Private->Handle

+              );

       }

-    }

 

-    //

-    // Close the PCI I/O Protocol

-    //

-    gBS->CloseProtocol (

-          Private->Handle,

-          &gEfiPciIoProtocolGuid,

-          This->DriverBindingHandle,

-          Private->Handle

-          );

-    if (Private) {

       gBS->FreePool (Private);

     }

   }

@@ -433,16 +449,15 @@ CirrusLogic5430ControllerDriverStop (
     return Status;

   }

 

-

   //

-  // Shutdown the hardware

+  // Restore original PCI attributes

   //

   Private->PciIo->Attributes (

-                    Private->PciIo,

-                    EfiPciIoAttributeOperationDisable,

-                    EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,

-                    NULL

-                    );

+                  Private->PciIo,

+                  EfiPciIoAttributeOperationSet,

+                  Private->OriginalPciAttributes,

+                  NULL

+                  );

 

   //

   // Close the PCI I/O Protocol

@@ -787,7 +802,7 @@ InitializeCirrusLogic5430 (
   ASSERT_EFI_ERROR (Status);

 

   //

-  // Install EFI Driver Supported EFI Version Protocol required for 

+  // Install EFI Driver Supported EFI Version Protocol required for

   // EFI drivers that are on PCI and other plug in cards.

   //

   gCirrusLogic5430DriverSupportedEfiVersion.FirmwareVersion = PcdGet32 (PcdDriverSupportedEfiVersion);

diff --git a/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.h b/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.h
index c8fcd70..719cf7c 100644
--- a/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.h
+++ b/OptionRomPkg/CirrusLogic5430Dxe/CirrusLogic5430.h
@@ -1,14 +1,14 @@
 /** @file

   Cirrus Logic 5430 Controller Driver

 

-  Copyright (c) 2006, 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        

-  http://opensource.org/licenses/bsd-license.php                                            

+  Copyright (c) 2006, 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

+  http://opensource.org/licenses/bsd-license.php

 

-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     

-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

 

 **/

 

@@ -65,6 +65,7 @@ typedef struct {
   UINT64                                Signature;

   EFI_HANDLE                            Handle;

   EFI_PCI_IO_PROTOCOL                   *PciIo;

+  UINT64                                OriginalPciAttributes;

   EFI_UGA_DRAW_PROTOCOL                 UgaDraw;

   EFI_GRAPHICS_OUTPUT_PROTOCOL          GraphicsOutput;

   UINTN                                 CurrentMode;