winntbusdriver.h

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/*

Copyright (c) 2004 - 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.             

Module Name:

  WinNtBusDriver.h

Abstract:

This following section documents the envirnoment variables for the Win NT 
build.  These variables are used to define the (virtual) hardware 
configuration of the NT environment

A ! can be used to seperate multiple instances in a variable. Each 
instance represents a seperate hardware device. 

EFI_WIN_NT_PHYSICAL_DISKS - maps to drives on your system
EFI_WIN_NT_VIRTUAL_DISKS  - maps to a device emulated by a file
EFI_WIN_NT_FILE_SYSTEM    - mouts a directory as a file system
EFI_WIN_NT_CONSOLE        - make a logical comand line window (only one!)
EFI_WIN_NT_UGA            - Builds UGA Windows of Width and Height
EFI_WIN_NT_GOP            - Builds GOP Windows of Width and Height
EFI_WIN_NT_SERIAL_PORT    - maps physical serial ports
EFI_WIN_NT_PASS_THRU      - associates a device with our PCI support

 <F>ixed       - Fixed disk like a hard drive.
 <R>emovable   - Removable media like a floppy or CD-ROM.
 Read <O>nly   - Write protected device.
 Read <W>rite  - Read write device.
 <block count> - Decimal number of blocks a device supports.
 <block size>  - Decimal number of bytes per block.

 NT envirnonment variable contents. '<' and '>' are not part of the variable, 
 they are just used to make this help more readable. There should be no 
 spaces between the ';'. Extra spaces will break the variable. A '!' is  
 used to seperate multiple devices in a variable.

 EFI_WIN_NT_VIRTUAL_DISKS = 
   <F | R><O | W>;<block count>;<block size>[!...]

 EFI_WIN_NT_PHYSICAL_DISKS =
   <drive letter>:<F | R><O | W>;<block count>;<block size>[!...]

 Virtual Disks: These devices use a file to emulate a hard disk or removable
                media device. 
                
   Thus a 20 MB emulated hard drive would look like:
   EFI_WIN_NT_VIRTUAL_DISKS=FW;40960;512

   A 1.44MB emulated floppy with a block size of 1024 would look like:
   EFI_WIN_NT_VIRTUAL_DISKS=RW;1440;1024

 Physical Disks: These devices use NT to open a real device in your system

   Thus a 120 MB floppy would look like:
   EFI_WIN_NT_PHYSICAL_DISKS=B:RW;245760;512

   Thus a standard CD-ROM floppy would look like:
   EFI_WIN_NT_PHYSICAL_DISKS=Z:RO;307200;2048

 EFI_WIN_NT_FILE_SYSTEM = 
   <directory path>[!...]

   Mounting the two directories C:\FOO and C:\BAR would look like:
   EFI_WIN_NT_FILE_SYSTEM=c:\foo!c:\bar

 EFI_WIN_NT_CONSOLE = 
   <window title>

   Declaring a text console window with the title "My EFI Console" woild look like:
   EFI_WIN_NT_CONSOLE=My EFI Console

 EFI_WIN_NT_UGA = 
   <width> <height>[!...]

   Declaring a two UGA windows with resolutions of 800x600 and 1024x768 would look like:
   Example : EFI_WIN_NT_UGA=800 600!1024 768

 EFI_WIN_NT_GOP = 
   <width> <height>[!...]

   Declaring a two GOP windows with resolutions of 800x600 and 1024x768 would look like:
   Example : EFI_WIN_NT_GOP=800 600!1024 768

 EFI_WIN_NT_SERIAL_PORT = 
   <port name>[!...]

   Declaring two serial ports on COM1 and COM2 would look like:
   Example : EFI_WIN_NT_SERIAL_PORT=COM1!COM2

 EFI_WIN_NT_PASS_THROUGH =
   <BaseAddress>;<Bus#>;<Device#>;<Function#>

   Declaring a base address of 0xE0000000 (used for PCI Express devices)
   and having NT32 talk to a device located at bus 0, device 1, function 0:
   Example : EFI_WIN_NT_PASS_THROUGH=E000000;0;1;0

---*/

// TODO: fix comment to start with /*++
#ifndef _NT_BUS_DRIVER_H_
#define _NT_BUS_DRIVER_H_

#include "EfiWinNt.h"
#include "EfiDriverLib.h"
#include "Tiano.h"
#include "EfiDriverLib.h"
#include "Pci22.h"

//
// Driver Consumed Protocols
//
#include EFI_PROTOCOL_DEFINITION (DevicePath)
#include EFI_PROTOCOL_DEFINITION (WinNtThunk)
#include EFI_PROTOCOL_DEFINITION (CpuIO)

//
// Driver Produced Protocols
//
#include EFI_PROTOCOL_DEFINITION (DriverBinding)
#include EFI_PROTOCOL_DEFINITION (ComponentName)
#include EFI_PROTOCOL_DEFINITION (WinNtIo)

//
// WinNt Bus Driver Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL  gWinNtBusDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL  gWinNtBusDriverComponentName;

//
// WinNt Bus Controller Structure
//
#define WIN_NT_BUS_DEVICE_SIGNATURE EFI_SIGNATURE_32 ('N', 'T', 'B', 'D')

typedef struct {
  UINT64                    Signature;
  EFI_UNICODE_STRING_TABLE  *ControllerNameTable;
} WIN_NT_BUS_DEVICE;

//
// WinNt Child Device Controller Structure
//
#define WIN_NT_IO_DEVICE_SIGNATURE  EFI_SIGNATURE_32 ('N', 'T', 'V', 'D')

typedef struct {
  UINT64                    Signature;
  EFI_HANDLE                Handle;
  EFI_WIN_NT_IO_PROTOCOL    WinNtIo;
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;

  //
  // Private data about the parent
  //
  EFI_HANDLE                ControllerHandle;
  EFI_DEVICE_PATH_PROTOCOL  *ParentDevicePath;

  EFI_UNICODE_STRING_TABLE  *ControllerNameTable;

} WIN_NT_IO_DEVICE;

#define WIN_NT_IO_DEVICE_FROM_THIS(a) \
  CR(a, WIN_NT_IO_DEVICE, WinNtIo, WIN_NT_IO_DEVICE_SIGNATURE)

//
// This is the largest env variable we can parse
//
#define MAX_NT_ENVIRNMENT_VARIABLE_LENGTH 512

typedef struct {
  CHAR16    *Variable;
  EFI_GUID  *DevicePathGuid;
} NT_ENVIRONMENT_VARIABLE_ENTRY;

typedef struct {
  VENDOR_DEVICE_PATH  VendorDevicePath;
  UINT32              Instance;
} WIN_NT_VENDOR_DEVICE_PATH_NODE;

EFI_STATUS
EFIAPI
CpuIoInitialize (
  IN EFI_HANDLE                            ImageHandle,
  IN EFI_SYSTEM_TABLE                      *SystemTable
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  ImageHandle - TODO: add argument description
  SystemTable - TODO: add argument description

Returns:

  TODO: add return values

--*/
;

//
// Driver Binding Protocol function prototypes
//
EFI_STATUS
EFIAPI
WinNtBusDriverBindingSupported (
  IN EFI_DRIVER_BINDING_PROTOCOL    *This,
  IN EFI_HANDLE                     Handle,
  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  This                - TODO: add argument description
  Handle              - TODO: add argument description
  RemainingDevicePath - TODO: add argument description

Returns:

  TODO: add return values

--*/
;

EFI_STATUS
EFIAPI
WinNtBusDriverBindingStart (
  IN EFI_DRIVER_BINDING_PROTOCOL    *This,
  IN EFI_HANDLE                     ParentHandle,
  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  This                - TODO: add argument description
  ParentHandle        - TODO: add argument description
  RemainingDevicePath - TODO: add argument description

Returns:

  TODO: add return values

--*/
;

EFI_STATUS
EFIAPI
WinNtBusDriverBindingStop (
  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
  IN  EFI_HANDLE                   Handle,
  IN  UINTN                        NumberOfChildren,
  IN  EFI_HANDLE                   *ChildHandleBuffer
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  This              - TODO: add argument description
  Handle            - TODO: add argument description
  NumberOfChildren  - TODO: add argument description
  ChildHandleBuffer - TODO: add argument description

Returns:

  TODO: add return values

--*/
;

//
// WinNt Bus Driver private worker functions
//
EFI_DEVICE_PATH_PROTOCOL  *
WinNtBusCreateDevicePath (
  IN  EFI_DEVICE_PATH_PROTOCOL  *RootDevicePath,
  IN  EFI_GUID                  *Guid,
  IN  UINT16                    InstanceNumber
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  RootDevicePath  - TODO: add argument description
  Guid            - TODO: add argument description
  InstanceNumber  - TODO: add argument description

Returns:

  TODO: add return values

--*/
;

#define IA32_MAX_IO_ADDRESS   0xFFFF
#define IA32_MAX_MEM_ADDRESS  0xFFFFFFFF

#define IOCTL_MEM_COPY        0x00000001
#define IOCTL_IO_READ         0x00000002
#define IOCTL_IO_WRITE        0x00000003

typedef union {
  UINT8   *buf;
  UINT8   *ui8;
  UINT16  *ui16;
  UINT32  *ui32;
  UINT64  *ui64;
  UINTN   ui;
} PTR;

EFI_CPU_IO_PROTOCOL       mCpuIoProtocol;

EFI_STATUS
CpuIoCheckAddressRange (
  IN  EFI_CPU_IO_PROTOCOL_WIDTH         Width,
  IN  UINT64                            Address,
  IN  UINTN                             Count,
  IN  VOID                              *Buffer,
  IN  UINT64                            Limit
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Width   - TODO: add argument description
  Address - TODO: add argument description
  Count   - TODO: add argument description
  Buffer  - TODO: add argument description
  Limit   - TODO: add argument description

Returns:

  TODO: add return values

--*/
;

BOOLEAN                   gReadPending;
BOOLEAN                   gHostBridgeInit;
EFI_HANDLE                gImageHandle;
UINTN                     gBaseAddress;
PCI_CONFIG_ACCESS_CF8     gConfigData;

EFI_WIN_NT_THUNK_PROTOCOL *gWinNtThunk;
HANDLE                    *gDeviceHandle;

#endif