/*++

Copyright (c) 2001  Microsoft Corporation

Module Name:

    ramdisk.h

Abstract:

    Provides the ARC emulation routines for I/O to a RAM disk device.

Author:

    Chuck Lenzmeier (chuckl) 29-Apr-2001

Revision History:

--*/


//
// Ramdisk error Codes. These are defined in \bldr\msg.* or 
// \setup\msgs.*. They are redefined here since ramdisk.c
// is in \lib and is used in both osloader and setupldr.
//
#define RAMDISK_GENERAL_FAILURE             15000
#define RAMDISK_INVALID_OPTIONS             15001
#define RAMDISK_BUILD_FAILURE               15002
#define RAMDISK_BOOT_FAILURE                15003
#define RAMDISK_BUILD_DISCOVER              15004
#define RAMDISK_BUILD_REQUEST               15005
#define RAMDISK_BUILD_PROGRESS_TIMEOUT      15006
#define RAMDISK_BUILD_PROGRESS_PENDING      15007
#define RAMDISK_BUILD_PROGRESS_ERROR        15008
#define RAMDISK_BUILD_PROGRESS              15009
#define RAMDISK_DOWNLOAD                    15010
#define RAMDISK_DOWNLOAD_NETWORK            15011
#define RAMDISK_DOWNLOAD_NETWORK_MCAST      15012

//
// Ramdisk Initialization
//

ARC_STATUS
RamdiskInitialize(
    IN PCHAR LoadOptions,
    IN BOOLEAN SdiBoot
    );

#if defined(_X86_)
VOID
RamdiskSdiBoot(
    PCHAR SdiFile
    );
#endif

//
// ARC I/O functions
//

ARC_STATUS
RamdiskClose(
    IN ULONG FileId
    );

ARC_STATUS
RamdiskMount(
    IN CHAR * FIRMWARE_PTR MountPath,
    IN MOUNT_OPERATION Operation
    );

ARC_STATUS
RamdiskOpen(
    IN PCHAR OpenPath,
    IN OPEN_MODE OpenMode,
    OUT PULONG FileId
    );

ARC_STATUS
RamdiskRead(
    IN ULONG FileId,
    OUT PVOID Buffer,
    IN ULONG Length,
    OUT PULONG Count
    );

ARC_STATUS
RamdiskReadStatus(
    IN ULONG FileId
    );

ARC_STATUS
RamdiskSeek (
    IN ULONG FileId,
    IN PLARGE_INTEGER Offset,
    IN SEEK_MODE SeekMode
    );

ARC_STATUS
RamdiskWrite(
    IN ULONG FileId,
    OUT PVOID Buffer,
    IN ULONG Length,
    OUT PULONG Count
    );

ARC_STATUS
RamdiskGetFileInfo(
    IN ULONG FileId,
    OUT PFILE_INFORMATION Finfo
    );

ARC_STATUS
RamdiskSetFileInfo (
    IN ULONG FileId,
    IN ULONG AttributeFlags,
    IN ULONG AttributeMask
    );

ARC_STATUS
RamdiskRename (
    IN ULONG FileId,
    IN CHAR * FIRMWARE_PTR NewName
    );

ARC_STATUS
RamdiskGetDirectoryEntry (
    IN ULONG FileId,
    OUT PDIRECTORY_ENTRY Buffer,
    IN ULONG Length,
    OUT ULONG * FIRMWARE_PTR Count
    );

//
// Global variables
//

ULONG_PTR SdiAddress;