xNBA/src/include/pxe_api.h

#ifndef PXE_API_H
#define PXE_API_H

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/** @file
 *
 * Preboot eXecution Environment (PXE) API
 *
 */

#include "pxe_types.h"

/** @addtogroup pxe Preboot eXecution Environment (PXE) API
 *  @{
 */

/** @defgroup pxe_api_call PXE entry points
 *
 * PXE entry points and calling conventions
 *
 *  @{
 */

/** The PXENV+ structure */
struct s_PXENV {
	/** Signature
	 *
	 * Contains the bytes 'P', 'X', 'E', 'N', 'V', '+'.
	 */
	UINT8_t		Signature[6];
	/** PXE API version
	 *
	 * MSB is major version number, LSB is minor version number.
	 * If the API version number is 0x0201 or greater, the !PXE
	 * structure pointed to by #PXEPtr should be used instead of
	 * this data structure.
	 */
	UINT16_t	Version;
	UINT8_t		Length;		/**< Length of this structure */
	/** Checksum
	 *
	 * The byte checksum of this structure (using the length in
	 * #Length) must be zero.
	 */
	UINT8_t		Checksum;
	SEGOFF16_t	RMEntry;	/**< Real-mode PXENV+ entry point */
	/** Protected-mode PXENV+ entry point offset
	 *
	 * PXE 2.1 deprecates this entry point.  For protected-mode
	 * API calls, use the !PXE structure pointed to by #PXEPtr
	 * instead.
	 */
	UINT32_t	PMOffset;
	/** Protected-mode PXENV+ entry point segment selector
	 *
	 * PXE 2.1 deprecates this entry point.  For protected-mode
	 * API calls, use the !PXE structure pointed to by #PXEPtr
	 * instead.
	 */
	SEGSEL_t	PMSelector;
	SEGSEL_t	StackSeg;	/**< Stack segment selector */
	UINT16_t	StackSize;	/**< Stack segment size */
	SEGSEL_t	BC_CodeSeg;	/**< Base-code code segment selector */
	UINT16_t	BC_CodeSize;	/**< Base-code code segment size */
	SEGSEL_t	BC_DataSeg;	/**< Base-code data segment selector */
	UINT16_t	BC_DataSize;	/**< Base-code data segment size */
	SEGSEL_t	UNDIDataSeg;	/**< UNDI data segment selector */
	UINT16_t	UNDIDataSize;	/**< UNDI data segment size */
	SEGSEL_t	UNDICodeSeg;	/**< UNDI code segment selector */
	UINT16_t	UNDICodeSize;	/**< UNDI code segment size */
	/** Address of the !PXE structure
	 *
	 * This field is present only if #Version is 0x0201 or
	 * greater.  If present, it points to a struct s_PXE.
	 */
	SEGOFF16_t	PXEPtr;
} PACKED;

typedef struct s_PXENV PXENV_t;

/** The !PXE structure */
struct s_PXE {
	/** Signature
	 *
	 * Contains the bytes '!', 'P', 'X', 'E'.
	 */
	UINT8_t		Signature[4];
	UINT8_t		StructLength;	/**< Length of this structure */
	/** Checksum
	 *
	 * The byte checksum of this structure (using the length in
	 * #StructLength) must be zero.
	 */
	UINT8_t		StructCksum;
	/** Revision of this structure
	 *
	 * For PXE version 2.1, this field must be zero.
	 */
	UINT8_t		StructRev;
	UINT8_t		reserved_1;	/**< Must be zero */
	/** Address of the UNDI ROM ID structure
	 *
	 * This is a pointer to a struct s_UNDI_ROM_ID.
	 */
	SEGOFF16_t	UNDIROMID;
	/** Address of the Base Code ROM ID structure
	 *
	 * This is a pointer to a struct s_BC_ROM_ID.
	 */
	SEGOFF16_t	BaseROMID;
	/** 16-bit !PXE entry point
	 *
	 * This is the entry point for either real mode, or protected
	 * mode with a 16-bit stack segment.
	 */
	SEGOFF16_t	EntryPointSP;
	/** 32-bit !PXE entry point
	 *
	 * This is the entry point for protected mode with a 32-bit
	 * stack segment.
	 */
	SEGOFF16_t	EntryPointESP;
	/** Status call-out function
	 *
	 * @v 0		(if in a time-out loop)
	 * @v n		Number of a received TFTP packet
	 * @ret 0	Continue operation
	 * @ret 1	Cancel operation
	 *
	 * This function will be called whenever the PXE stack is in
	 * protected mode, is waiting for an event (e.g. a DHCP reply)
	 * and wishes to allow the user to cancel the operation.
	 * Parameters are passed in register %ax; the return value
	 * must also be placed in register %ax.  All other registers
	 * and flags @b must be preserved.
	 *
	 * In real mode, an internal function (that checks for a
	 * keypress) will be used.
	 *
	 * If this field is set to -1, no status call-out function
	 * will be used and consequently the user will not be allowed
	 * to interrupt operations.
	 *
	 * @note The PXE specification version 2.1 defines the
	 * StatusCallout field, mentions it 11 times, but nowhere
	 * defines what it actually does or how it gets called.
	 * Fortunately, the WfM specification version 1.1a deigns to
	 * inform us of such petty details.
	 */
	SEGOFF16_t	StatusCallout;
	UINT8_t		reserved_2;	/**< Must be zero */
	/** Number of segment descriptors
	 *
	 * If this number is greater than 7, the remaining descriptors
	 * follow immediately after #BC_CodeWrite.
	 */
	UINT8_t		SegDescCnt;
	/** First protected-mode selector
	 *
	 * This is the segment selector value for the first segment
	 * assigned to PXE.  Protected-mode selectors must be
	 * consecutive, according to the PXE 2.1 specification, though
	 * no reason is given.  Each #SEGDESC_t includes a field for
	 * the segment selector, so this information is entirely
	 * redundant.
	 */
	SEGSEL_t	FirstSelector;
	/** Stack segment descriptor */
	SEGDESC_t	Stack;
	/** UNDI data segment descriptor */
	SEGDESC_t	UNDIData;
	/** UNDI code segment descriptor */
	SEGDESC_t	UNDICode;
	/** UNDI writable code segment descriptor */
	SEGDESC_t	UNDICodeWrite;
	/** Base-code data segment descriptor */
	SEGDESC_t	BC_Data;
	/** Base-code code segment descriptor */
	SEGDESC_t	BC_Code;
	/** Base-code writable code segment descriptor */
	SEGDESC_t	BC_CodeWrite;
} PACKED;

typedef struct s_PXE PXE_t;

/** @} */ /* pxe_api_call */

/** @defgroup pxe_loader_api PXE Loader API
 *
 * The UNDI ROM loader API
 *
 * @{
 */

/** The UNDI ROM ID structure */
struct s_UNDI_ROM_ID {
	/** Signature
	 *
	 * Contains the bytes 'U', 'N', 'D', 'I'.
	 */
	UINT32_t Signature;
	UINT8_t StructLength;		/**< Length of this structure */
	/** Checksum
	 *
	 * The byte checksum of this structure (using the length in
	 * #StructLength) must be zero.
	 */
	UINT8_t StructCksum;
	/** Revision of this structure
	 *
	 * For PXE version 2.1, this field must be zero.
	 */
	UINT8_t StructRev;
	/** UNDI revision
	 *
	 * UNDI revision, least significant byte first.  For UNDI
	 * version 2.1.0, this field will contain { 0x00, 0x01, 0x02 }.
	 */
	UINT8_t UNDIRev[3];
	/** UNDI loader routine entry point
	 *
	 * This is the entry point for calling undi_loader().
	 */
	UINT16_t UNDILoader;
	/** Minimum required stack segment size */
	UINT16_t StackSize;
	/** Minimum required data segment size */
	UINT16_t DataSize;
	/** Minimum required code segment size */
	UINT16_t CodeSize;
} PACKED;

typedef struct s_UNDI_ROM_ID UNDI_ROM_ID_t;

/** Parameter block for undi_loader() */
struct s_UNDI_LOADER {
	/** struct s_UNDI_LOADER starts with a struct s_PXENV_START_UNDI */
	union undi_loader_start_undi {
		PXENV_STATUS_t Status;		/**< PXE status code */
		/** Parameters to pass to pxenv_start_undi() */
		struct s_PXENV_START_UNDI start_undi;
	} u;
	/** UNDI data segment
	 *
	 * @note The PXE specification defines the type of this field
	 * as #UINT16_t.  For x86, #SEGSEL_t and #UINT16_t are
	 * equivalent anyway; for other architectures #SEGSEL_t makes
	 * more sense.
	 */
	SEGSEL_t	undi_ds;
	/** UNDI code segment
	 *
	 * @note The PXE specification defines the type of this field
	 * as #UINT16_t.  For x86, #SEGSEL_t and #UINT16_t are
	 * equivalent anyway; for other architectures #SEGSEL_t makes
	 * more sense.
	 */
	SEGSEL_t	undi_cs;
	/** Address of the !PXE structure (a struct s_PXE) */
	SEGOFF16_t	pxe_ptr;
	/** Address of the PXENV+ structure (a struct s_PXENV) */
	SEGOFF16_t	pxenv_ptr;
} PACKED;

typedef struct s_UNDI_LOADER UNDI_LOADER_t;

extern PXENV_EXIT_t undi_loader ( struct s_UNDI_LOADER *undi_loader );

/** @} */ /* pxe_loader_api */

/** @defgroup pxe_preboot_api PXE Preboot API
 *
 * General high-level functions: #PXENV_UNLOAD_STACK, #PXENV_START_UNDI etc.
 *
 * @{
 */

/** @defgroup pxenv_unload_stack PXENV_UNLOAD_STACK
 *
 *  UNLOAD BASE CODE STACK
 *
 *  @{
 */

/** PXE API function code for pxenv_unload_stack() */
#define	PXENV_UNLOAD_STACK		0x0070

/** Parameter block for pxenv_unload_stack() */
struct s_PXENV_UNLOAD_STACK {
	PXENV_STATUS_t Status;			/**< PXE status code */
	UINT8_t reserved[10];			/**< Must be zero */
} PACKED;

typedef struct s_PXENV_UNLOAD_STACK PXENV_UNLOAD_STACK_t;

extern PXENV_EXIT_t pxenv_unload_stack ( struct s_PXENV_UNLOAD_STACK
					 *unload_stack );

/** @} */ /* pxenv_unload_stack */

/** @defgroup pxenv_get_cached_info PXENV_GET_CACHED_INFO
 *
 *  GET CACHED INFO
 *
 *  @{
 */

/** PXE API function code for pxenv_get_cached_info() */
#define	PXENV_GET_CACHED_INFO		0x0071

/** The client's DHCPDISCOVER packet */
#define PXENV_PACKET_TYPE_DHCP_DISCOVER	1

/** The DHCP server's DHCPACK packet */
#define PXENV_PACKET_TYPE_DHCP_ACK	2

/** The Boot Server's Discover Reply packet
 *
 * This packet contains DHCP option 60 set to "PXEClient", a valid
 * boot file name, and may or may not contain MTFTP options.
 */
#define PXENV_PACKET_TYPE_CACHED_REPLY	3

/** Parameter block for pxenv_get_cached_info() */
struct s_PXENV_GET_CACHED_INFO {
	PXENV_STATUS_t Status;			/**< PXE status code */
	/** Packet type.
	 *
	 * Valid values are #PXENV_PACKET_TYPE_DHCP_DISCOVER,
	 * #PXENV_PACKET_TYPE_DHCP_ACK or #PXENV_PACKET_TYPE_CACHED_REPLY
	 */
	UINT16_t PacketType;
	UINT16_t BufferSize;			/**< Buffer size */
	SEGOFF16_t Buffer;			/**< Buffer address */
	UINT16_t BufferLimit;			/**< Maximum buffer size */
} PACKED;

typedef struct s_PXENV_GET_CACHED_INFO PXENV_GET_CACHED_INFO_t;

#define BOOTP_REQ	1	/**< A BOOTP request packet */
#define BOOTP_REP	2	/**< A BOOTP reply packet */

/** DHCP broadcast flag
 *
 * Request a broadcast response (DHCPOFFER or DHCPACK) from the DHCP
 * server.
 */
#define BOOTP_BCAST	0x8000

#define VM_RFC1048	0x63825363L	/**< DHCP magic cookie */

/** Format of buffer filled in by pxenv_get_cached_info()
 *
 * This somewhat convoluted data structure simply describes the layout
 * of a DHCP packet.  Refer to RFC2131 section 2 for a full
 * description.
 */
struct bootph {
	/** Message opcode.
	 *
	 * Valid values are #BOOTP_REQ and #BOOTP_REP.
	 */
	UINT8_t opcode;
	/** NIC hardware type.
	 *
	 * Valid values are as for s_PXENV_UNDI_GET_INFORMATION::HwType.
	 */
	UINT8_t Hardware;
	UINT8_t Hardlen;		/**< MAC address length */
	/** Gateway hops
	 *
	 * Zero in packets sent by the client.  May be non-zero in
	 * replies from the DHCP server, if the reply comes via a DHCP
	 * relay agent.
	 */
	UINT8_t Gatehops;
	UINT32_t ident;			/**< DHCP transaction id (xid) */
	/** Elapsed time
	 *
	 * Number of seconds since the client began the DHCP
	 * transaction.
	 */
	UINT16_t seconds;
	/** Flags
	 *
	 * This is the bitwise-OR of any of the following values:
	 * #BOOTP_BCAST.
	 */
	UINT16_t Flags;
	/** Client IP address
	 *
	 * Set only if the client already has an IP address.
	 */
	IP4_t cip;
	/** Your IP address
	 *
	 * This is the IP address that the server assigns to the
	 * client.
	 */
	IP4_t yip;
	/** Server IP address
	 *
	 * This is the IP address of the BOOTP/DHCP server.
	 */
	IP4_t sip;
	/** Gateway IP address
	 *
	 * This is the IP address of the BOOTP/DHCP relay agent, if
	 * any.  It is @b not (necessarily) the address of the default
	 * gateway for routing purposes.
	 */
	IP4_t gip;
	MAC_ADDR_t CAddr;		/**< Client MAC address */
	UINT8_t Sname[64];		/**< Server host name */
	UINT8_t bootfile[128];		/**< Boot file name */
	/** DHCP options
	 *
	 * Don't ask.  Just laugh.  Then burn a copy of the PXE
	 * specification and send Intel an e-mail asking them if
	 * they've figured out what a "union" does in C yet.
	 */
	union bootph_vendor {
		UINT8_t d[BOOTP_DHCPVEND]; /**< DHCP options */
		/** DHCP options */
		struct bootph_vendor_v {
			/** DHCP magic cookie
			 *
			 * Should have the value #VM_RFC1048.
			 */
			UINT8_t magic[4];
			UINT32_t flags;	/**< BOOTP flags/opcodes */
			/** "End of BOOTP vendor extensions"
			 *
			 * Abandon hope, all ye who consider the
			 * purpose of this field.
			 */
			UINT8_t pad[56];
		} v;
	} vendor;
} PACKED;

typedef struct bootph BOOTPLAYER_t;

extern PXENV_EXIT_t pxenv_get_cached_info ( struct s_PXENV_GET_CACHED_INFO
					    *get_cached_info );

/** @} */ /* pxenv_get_cached_info */

/** @defgroup pxenv_restart_tftp PXENV_RESTART_TFTP
 *
 *  RESTART TFTP
 *
 *  @{
 */

/** PXE API function code for pxenv_restart_tftp() */
#define	PXENV_RESTART_TFTP		0x0073

/** Parameter block for pxenv_restart_tftp() */
struct s_PXENV_TFTP_READ_FILE;

typedef struct s_PXENV_RESTART_TFTP PXENV_RESTART_TFTP_t;

extern PXENV_EXIT_t pxenv_restart_tftp ( struct s_PXENV_TFTP_READ_FILE
					 *restart_tftp );

/** @} */ /* pxenv_restart_tftp */

/** @defgroup pxenv_start_undi PXENV_START_UNDI
 *
 *  START UNDI
 *
 *  @{
 */

/** PXE API function code for pxenv_start_undi() */
#define	PXENV_START_UNDI		0x0000

/** Parameter block for pxenv_start_undi() */
struct s_PXENV_START_UNDI {
	PXENV_STATUS_t Status;			/**< PXE status code */
	/** %ax register as passed to the Option ROM initialisation routine.
	 *
	 * For a PCI device, this should contain the bus:dev:fn value
	 * that uniquely identifies the PCI device in the system.  For
	 * a non-PCI device, this field is not defined.
	 */
	UINT16_t AX;
	/** %bx register as passed to the Option ROM initialisation routine.
	 *
	 * For an ISAPnP device, this should contain the Card Select
	 * Number assigned to the ISAPnP card.  For non-ISAPnP
	 * devices, this should contain 0xffff.
	 */
	UINT16_t BX;
	/** %dx register as passed to the Option ROM initialisation routine.
	 *
	 * For an ISAPnP device, this should contain the ISAPnP Read
	 * Port address as currently set in all ISAPnP cards.  If
	 * there are no ISAPnP cards, this should contain 0xffff.  (If
	 * this is a non-ISAPnP device, but there are ISAPnP cards in
	 * the system, this value is not well defined.)
	 */
	UINT16_t DX;
	/** %di register as passed to the Option ROM initialisation routine.
	 *
	 * This contains the #OFF16_t portion of a struct #s_SEGOFF16
	 * that points to the System BIOS Plug and Play Installation
	 * Check Structure.  (Refer to section 4.4 of the Plug and
	 * Play BIOS specification for a description of this
	 * structure.)
	 *
	 * @note The PXE specification defines the type of this field
	 * as #UINT16_t.  For x86, #OFF16_t and #UINT16_t are
	 * equivalent anyway; for other architectures #OFF16_t makes
	 * more sense.
	 */
	OFF16_t DI;
	/** %es register as passed to the Option ROM initialisation routine.
	 *
	 * This contains the #SEGSEL_t portion of a struct #s_SEGOFF16
	 * that points to the System BIOS Plug and Play Installation
	 * Check Structure.  (Refer to section 4.4 of the Plug and
	 * Play BIOS specification for a description of this
	 * structure.)
	 *
	 * @note The PXE specification defines the type of this field
	 * as #UINT16_t.  For x86, #SEGSEL_t and #UINT16_t are
	 * equivalent anyway; for other architectures #SEGSEL_t makes
	 * more sense.
	 */
	SEGSEL_t ES;
} PACKED;

typedef struct s_PXENV_START_UNDI PXENV_START_UNDI_t;

extern PXENV_EXIT_t pxenv_start_undi ( struct s_PXENV_START_UNDI *start_undi );

/** @} */ /* pxenv_start_undi */

/** @defgroup pxenv_stop_undi PXENV_STOP_UNDI
 *
 *  STOP UNDI
 *
 *  @{
 */

/** PXE API function code for pxenv_stop_undi() */
#define	PXENV_STOP_UNDI			0x0015

/** Parameter block for pxenv_stop_undi() */
struct s_PXENV_STOP_UNDI {
	PXENV_STATUS_t Status;			/**< PXE status code */
} PACKED;

typedef struct s_PXENV_STOP_UNDI PXENV_STOP_UNDI_t;

extern PXENV_EXIT_t pxenv_stop_undi ( struct s_PXENV_STOP_UNDI *stop_undi );

/** @} */ /* pxenv_stop_undi */

/** @defgroup pxenv_start_base PXENV_START_BASE
 *
 *  START BASE
 *
 *  @{
 */

/** PXE API function code for pxenv_start_base() */
#define	PXENV_START_BASE		0x0075

/** Parameter block for pxenv_start_base() */
struct s_PXENV_START_BASE {
	PXENV_STATUS_t Status;			/**< PXE status code */
} PACKED;

typedef struct s_PXENV_START_BASE PXENV_START_BASE_t;

extern PXENV_EXIT_t pxenv_start_base ( struct s_PXENV_START_BASE *start_base );

/** @} */ /* pxenv_start_base */

/** @defgroup pxenv_stop_base PXENV_STOP_BASE
 *
 *  STOP BASE
 *
 *  @{
 */

/** PXE API function code for pxenv_stop_base() */
#define	PXENV_STOP_BASE			0x0076

/** Parameter block for pxenv_stop_base() */
struct s_PXENV_STOP_BASE {
	PXENV_STATUS_t Status;			/**< PXE status code */
} PACKED;

typedef struct s_PXENV_STOP_BASE PXENV_STOP_BASE_t;

extern PXENV_EXIT_t pxenv_stop_base ( struct s_PXENV_STOP_BASE *stop_base );

/** @} */ /* pxenv_stop_base */

/** @} */ /* pxe_preboot_api */

/** @defgroup pxe_tftp_api PXE TFTP API
 *
 * Download files via TFTP or MTFTP
 *
 * @{
 */

/** @defgroup pxenv_tftp_open PXENV_TFTP_OPEN
 *
 *  TFTP OPEN
 *
 *  @{
 */

/** PXE API function code for pxenv_tftp_open() */
#define	PXENV_TFTP_OPEN			0x0020

/** Parameter block for pxenv_tftp_open() */
struct s_PXENV_TFTP_OPEN {
	PXENV_STATUS_t Status;			/**< PXE status code */
	IP4_t ServerIPAddress;			/**< TFTP server IP address */
	IP4_t GatewayIPAddress;			/**< Relay agent IP address */
	UINT8_t FileName[128];			/**< File name */
	UDP_PORT_t TFTPPort;			/**< TFTP server UDP port */
	/** Requested size of TFTP packets
	 *
	 * This is the TFTP "blksize" option.  This must be at least
	 * 512, according to the PXE specification, though no reason
	 * is offered.
	 */
	UINT16_t PacketSize;
} PACKED;

typedef struct s_PXENV_TFTP_OPEN PXENV_TFTP_OPEN_t;

extern PXENV_EXIT_t pxenv_tftp_open ( struct s_PXENV_TFTP_OPEN *tftp_open );

/** @} */ /* pxenv_tftp_open */

/** @defgroup pxenv_tftp_close PXENV_TFTP_CLOSE
 *
 *  TFTP CLOSE
 *
 *  @{
 */

/** PXE API function code for pxenv_tftp_close() */
#define	PXENV_TFTP_CLOSE		0x0021

/** Parameter block for pxenv_tftp_close() */
struct s_PXENV_TFTP_CLOSE {
	PXENV_STATUS_t Status;			/**< PXE status code */
} PACKED;

typedef struct s_PXENV_TFTP_CLOSE PXENV_TFTP_CLOSE_t;

extern PXENV_EXIT_t pxenv_tftp_close ( struct s_PXENV_TFTP_CLOSE *tftp_close );

/** @} */ /* pxenv_tftp_close */

/** @defgroup pxenv_tftp_read PXENV_TFTP_READ
 *
 *  TFTP READ
 *
 *  @{
 */

/** PXE API function code for pxenv_tftp_read() */
#define	PXENV_TFTP_READ			0x0022

/** Parameter block for pxenv_tftp_read() */
struct s_PXENV_TFTP_READ {
	PXENV_STATUS_t Status;			/**< PXE status code */
	UINT16_t PacketNumber;			/**< TFTP packet number */
	UINT16_t BufferSize;			/**< Size of data buffer */
	SEGOFF16_t Buffer;			/**< Address of data buffer */
} PACKED;

typedef struct s_PXENV_TFTP_READ PXENV_TFTP_READ_t;

extern PXENV_EXIT_t pxenv_tftp_read ( struct s_PXENV_TFTP_READ *tftp_read );

/** @} */ /* pxenv_tftp_read */

/** @defgroup pxenv_tftp_read_file PXENV_TFTP_READ_FILE
 *
 *  TFTP/MTFTP READ FILE
 *
 *  @{
 */

/** PXE API function code for pxenv_tftp_read_file() */
#define	PXENV_TFTP_READ_FILE		0x0023

/** Parameter block for pxenv_tftp_read_file() */
struct s_PXENV_TFTP_READ_FILE {
	PXENV_STATUS_t Status;			/**< PXE status code */
	UINT8_t FileName[128];			/**< File name */
	UINT32_t BufferSize;			/**< Size of data buffer */
	ADDR32_t Buffer;			/**< Address of data buffer */
	IP4_t ServerIPAddress;			/**< TFTP server IP address */
	IP4_t GatewayIPAddress;			/**< Relay agent IP address */
	/** File multicast IP address */
	IP4_t McastIPAddress;
	/** Client multicast listening port */
	UDP_PORT_t TFTPClntPort;
	/** Server multicast listening port */
	UDP_PORT_t TFTPSrvPort;
	/** Timeout for receiving data or ACK packets */
	UINT16_t TFTPOpenTimeOut;
	/** Timeout before issuing MTFTP open */
	UINT16_t TFTPReopenDelay;
} PACKED;

typedef struct s_PXENV_TFTP_READ_FILE PXENV_TFTP_READ_FILE_t;

extern PXENV_EXIT_t pxenv_tftp_read_file ( struct s_PXENV_TFTP_READ_FILE
					   *tftp_read_file );

/** @} */ /* pxenv_tftp_read_file */

/** @defgroup pxenv_tftp_get_fsize PXENV_TFTP_GET_FSIZE
 *
 *  TFTP GET FILE SIZE
 *
 *  @{
 */

/** PXE API function code for pxenv_tftp_get_fsize() */
#define	PXENV_TFTP_GET_FSIZE		0x0025

/** Parameter block for pxenv_tftp_get_fsize() */
struct s_PXENV_TFTP_GET_FSIZE {
	PXENV_STATUS_t Status;			/**< PXE status code */
	IP4_t ServerIPAddress;			/**< TFTP server IP address */
	IP4_t GatewayIPAddress;			/**< Relay agent IP address */
	UINT8_t FileName[128];			/**< File name */
	UINT32_t FileSize;			/**< Size of the file */
} PACKED;

typedef struct s_PXENV_TFTP_GET_FSIZE PXENV_TFTP_GET_FSIZE_t;

extern PXENV_EXIT_t pxenv_tftp_get_fsize ( struct s_PXENV_TFTP_GET_FSIZE
					   *get_fsize );

/** @} */ /* pxenv_tftp_get_fsize */

/** @} */ /* pxe_tftp_api */

/** @defgroup pxe_udp_api PXE UDP API
 *
 * Transmit and receive UDP packets
 *
 * @{
 */

/** @defgroup pxenv_udp_open PXENV_UDP_OPEN
 *
 *  UDP OPEN
 *
 *  @{
 */

/** PXE API function code for pxenv_udp_open() */
#define	PXENV_UDP_OPEN			0x0030

/** Parameter block for pxenv_udp_open() */
struct s_PXENV_UDP_OPEN {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	IP4_t		src_ip;		/**< IP address of this station */
} PACKED;

typedef struct s_PXENV_UDP_OPEN PXENV_UDP_OPEN_t;

extern PXENV_EXIT_t pxenv_udp_open ( struct s_PXENV_UDP_OPEN *udp_open );

/** @} */ /* pxenv_udp_open */

/** @defgroup pxenv_udp_close PXENV_UDP_CLOSE
 *
 *  UDP CLOSE
 *
 *  @{
 */

/** PXE API function code for pxenv_udp_close() */
#define	PXENV_UDP_CLOSE			0x0031

/** Parameter block for pxenv_udp_close() */
struct s_PXENV_UDP_CLOSE {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UDP_CLOSE PXENV_UDP_CLOSE_t;

extern PXENV_EXIT_t pxenv_udp_close ( struct s_PXENV_UDP_CLOSE *udp_close );

/** @} */ /* pxenv_udp_close */

/** @defgroup pxenv_udp_write PXENV_UDP_WRITE
 *
 *  UDP WRITE
 *
 *  @{
 */

/** PXE API function code for pxenv_udp_write() */
#define	PXENV_UDP_WRITE			0x0033

/** Parameter block for pxenv_udp_write() */
struct s_PXENV_UDP_WRITE {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	IP4_t		ip;		/**< Destination IP address */
	IP4_t		gw;		/**< Relay agent IP address */
	UDP_PORT_t	src_port;	/**< Source UDP port */
	UDP_PORT_t	dst_port;	/**< Destination UDP port */
	UINT16_t	buffer_size;	/**< UDP payload buffer size */
	SEGOFF16_t	buffer;		/**< UDP payload buffer address */
} PACKED;

typedef struct s_PXENV_UDP_WRITE PXENV_UDP_WRITE_t;

extern PXENV_EXIT_t pxenv_udp_write ( struct s_PXENV_UDP_WRITE *udp_write );

/** @} */ /* pxenv_udp_write */

/** @defgroup pxenv_udp_read PXENV_UDP_READ
 *
 *  UDP READ
 *
 *  @{
 */

/** PXE API function code for pxenv_udp_read() */
#define	PXENV_UDP_READ			0x0032

/** Parameter block for pxenv_udp_read() */
struct s_PXENV_UDP_READ {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	IP4_t		src_ip;		/**< Source IP address */
	IP4_t		dest_ip;	/**< Destination IP address */
	UDP_PORT_t	s_port;		/**< Source UDP port */
	UDP_PORT_t	d_port;		/**< Destination UDP port */
	UINT16_t	buffer_size;	/**< UDP payload buffer size */
	SEGOFF16_t	buffer;		/**< UDP payload buffer address */
} PACKED;

typedef struct s_PXENV_UDP_READ PXENV_UDP_READ_t;

extern PXENV_EXIT_t pxenv_udp_read ( struct s_PXENV_UDP_READ *udp_read );

/** @} */ /* pxenv_udp_read */

/** @} */ /* pxe_udp_api */

/** @defgroup pxe_undi_api PXE UNDI API
 *
 * Direct control of the network interface card
 *
 * @{
 */

/** @defgroup pxenv_undi_startup PXENV_UNDI_STARTUP
 *
 *  UNDI STARTUP
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_startup() */
#define	PXENV_UNDI_STARTUP		0x0001

#define PXENV_BUS_ISA		0	/**< ISA bus type */
#define PXENV_BUS_EISA		1	/**< EISA bus type */
#define PXENV_BUS_MCA		2	/**< MCA bus type */
#define PXENV_BUS_PCI		3	/**< PCI bus type */
#define PXENV_BUS_VESA		4	/**< VESA bus type */
#define PXENV_BUS_PCMCIA	5	/**< PCMCIA bus type */

/** Parameter block for pxenv_undi_startup() */
struct s_PXENV_UNDI_STARTUP {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_STARTUP PXENV_UNDI_STARTUP_t;

extern PXENV_EXIT_t pxenv_undi_startup ( struct s_PXENV_UNDI_STARTUP
					 *undi_startup );

/** @} */ /* pxenv_undi_startup */

/** @defgroup pxenv_undi_cleanup PXENV_UNDI_CLEANUP
 *
 *  UNDI CLEANUP
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_cleanup() */
#define	PXENV_UNDI_CLEANUP		0x0002

/** Parameter block for pxenv_undi_cleanup() */
struct s_PXENV_UNDI_CLEANUP {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_CLEANUP PXENV_UNDI_CLEANUP_t;

extern PXENV_EXIT_t pxenv_undi_cleanup ( struct s_PXENV_UNDI_CLEANUP
					 *undi_cleanup );

/** @} */ /* pxenv_undi_cleanup */

/** @defgroup pxenv_undi_initialize PXENV_UNDI_INITIALIZE
 *
 *  UNDI INITIALIZE
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_initialize() */
#define	PXENV_UNDI_INITIALIZE		0x0003

/** Parameter block for pxenv_undi_initialize() */
struct s_PXENV_UNDI_INITIALIZE {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** NDIS 2.0 configuration information, or NULL
	 *
	 * This is a pointer to the data structure returned by the
	 * NDIS 2.0 GetProtocolManagerInfo() API call.  The data
	 * structure is documented, in a rather haphazard way, in
	 * section 4-17 of the NDIS 2.0 specification.
	 */
	ADDR32_t ProtocolIni;
	UINT8_t reserved[8];		/**< Must be zero */
} PACKED;

typedef struct s_PXENV_UNDI_INITIALIZE PXENV_UNDI_INITIALIZE_t;

extern PXENV_EXIT_t pxenv_undi_initialize ( struct s_PXENV_UNDI_INITIALIZE
					    *undi_initialize );

/** @} */ /* pxenv_undi_initialize */

/** @defgroup pxenv_undi_reset_adapter PXENV_UNDI_RESET_ADAPTER
 *
 *  UNDI RESET ADAPTER
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_reset_adapter() */
#define	PXENV_UNDI_RESET_ADAPTER	0x0004

/** Maximum number of multicast MAC addresses */
#define MAXNUM_MCADDR	8

/** List of multicast MAC addresses */
struct s_PXENV_UNDI_MCAST_ADDRESS {
	/** Number of multicast MAC addresses */
	UINT16_t MCastAddrCount;
	/** List of up to #MAXNUM_MCADDR multicast MAC addresses */
	MAC_ADDR_t McastAddr[MAXNUM_MCADDR];
} PACKED;

typedef struct s_PXENV_UNDI_MCAST_ADDRESS PXENV_UNDI_MCAST_ADDRESS_t;

/** Parameter block for pxenv_undi_reset_adapter() */
struct s_PXENV_UNDI_RESET_ADAPTER {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Multicast MAC addresses */
	struct s_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
} PACKED;

typedef struct s_PXENV_UNDI_RESET_ADAPTER PXENV_UNDI_RESET_ADAPTER_t;

extern PXENV_EXIT_t pxenv_undi_reset_adapter ( struct s_PXENV_UNDI_RESET
					       *undi_reset_adapter );

/** @} */ /* pxenv_undi_reset_adapter */

/** @defgroup pxenv_undi_shutdown PXENV_UNDI_SHUTDOWN
 *
 *  UNDI SHUTDOWN
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_shutdown() */
#define	PXENV_UNDI_SHUTDOWN		0x0005

/** Parameter block for pxenv_undi_shutdown() */
struct s_PXENV_UNDI_SHUTDOWN {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_SHUTDOWN PXENV_UNDI_SHUTDOWN_t;

extern PXENV_EXIT_t pxenv_undi_shutdown ( struct s_PXENV_UNDI_SHUTDOWN
					  *undi_shutdown );

/** @} */ /* pxenv_undi_shutdown */

/** @defgroup pxenv_undi_open PXENV_UNDI_OPEN
 *
 *  UNDI OPEN
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_open() */
#define	PXENV_UNDI_OPEN			0x0006

/** Accept "directed" packets
 *
 * These are packets addresses to either this adapter's MAC address or
 * to any of the configured multicast MAC addresses (see
 * #s_PXENV_UNDI_MCAST_ADDRESS).
 */
#define FLTR_DIRECTED	0x0001
/** Accept broadcast packets */
#define FLTR_BRDCST	0x0002
/** Accept all packets; listen in promiscuous mode */
#define FLTR_PRMSCS	0x0004
/** Accept source-routed packets */
#define FLTR_SRC_RTG	0x0008

/** Parameter block for pxenv_undi_open() */
struct s_PXENV_UNDI_OPEN {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Open flags as defined in NDIS 2.0
	 *
	 * This is the OpenOptions field as passed to the NDIS 2.0
	 * OpenAdapter() API call.  It is defined to be "adapter
	 * specific", though 0 is guaranteed to be a valid value.
	 */
	UINT16_t OpenFlag;
	/** Receive packet filter
	 *
	 * This is the bitwise-OR of any of the following flags:
	 * #FLTR_DIRECTED, #FLTR_BRDCST, #FLTR_PRMSCS and
	 * #FLTR_SRC_RTG.
	 */
	UINT16_t PktFilter;
	/** Multicast MAC addresses */
	struct s_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
} PACKED;

typedef struct s_PXENV_UNDI_OPEN PXENV_UNDI_OPEN_t;

extern PXENV_EXIT_t pxenv_undi_open ( struct s_PXENV_UNDI_OPEN *undi_open );

/** @} */ /* pxenv_undi_open */

/** @defgroup pxenv_undi_close PXENV_UNDI_CLOSE
 *
 *  UNDI CLOSE
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_close() */
#define	PXENV_UNDI_CLOSE		0x0007

/** Parameter block for pxenv_undi_close() */
struct s_PXENV_UNDI_CLOSE {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_CLOSE PXENV_UNDI_CLOSE_t;

extern PXENV_EXIT_t pxenv_undi_close ( struct s_PXENV_UNDI_CLOSE *undi_close );

/** @} */ /* pxenv_undi_close */

/** @defgroup pxenv_undi_transmit PXENV_UNDI_TRANSMIT
 *
 *  UNDI TRANSMIT PACKET
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_transmit() */
#define	PXENV_UNDI_TRANSMIT		0x0008

#define P_UNKNOWN	0		/**< Media header already filled in */
#define P_IP		1		/**< IP protocol */
#define P_ARP		2		/**< ARP protocol */
#define P_RARP		3		/**< RARP protocol */
#define P_OTHER		4		/**< Other protocol */

#define XMT_DESTADDR	0x0000		/**< Unicast packet */
#define XMT_BROADCAST	0x0001		/**< Broadcast packet */

/** Maximum number of data blocks in a transmit buffer descriptor */
#define MAX_DATA_BLKS	8

/** A transmit buffer descriptor, as pointed to by s_PXENV_UNDI_TRANSMIT::TBD
 */
struct s_PXENV_UNDI_TBD {
	UINT16_t ImmedLength;		/**< Length of the transmit buffer */
	SEGOFF16_t Xmit;		/**< Address of the transmit buffer */
	UINT16_t DataBlkCount;
	/** Array of up to #MAX_DATA_BLKS additional transmit buffers */
	struct DataBlk {
		/** Always 1
		 *
		 * A value of 0 would indicate that #TDDataPtr were an
		 * #ADDR32_t rather than a #SEGOFF16_t.  The PXE
		 * specification version 2.1 explicitly states that
		 * this is not supported; #TDDataPtr will always be a
		 * #SEGOFF16_t.
		 */
		UINT8_t TDPtrType;
		UINT8_t TDRsvdByte;	/**< Must be zero */
		UINT16_t TDDataLen;	/**< Length of this transmit buffer */
		SEGOFF16_t TDDataPtr;	/**< Address of this transmit buffer */
	} DataBlock[MAX_DATA_BLKS];
} PACKED;

typedef struct s_PXENV_UNDI_TBD PXENV_UNDI_TBD_t;

/** Parameter block for pxenv_undi_transmit() */
struct s_PXENV_UNDI_TRANSMIT {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Protocol
	 *
	 * Valid values are #P_UNKNOWN, #P_IP, #P_ARP or #P_RARP.  If
	 * the caller has already filled in the media header, this
	 * field must be set to #P_UNKNOWN.
	 */
	UINT8_t Protocol;
	/** Unicast/broadcast flag
	 *
	 * Valid values are #XMT_DESTADDR or #XMT_BROADCAST.
	 */
	UINT8_t XmitFlag;
	SEGOFF16_t DestAddr;		/**< Destination MAC address */
	/** Address of the Transmit Buffer Descriptor
	 *
	 * This is a pointer to a struct s_PXENV_UNDI_TBD.
	 */
	SEGOFF16_t TBD;
	UINT32_t Reserved[2];		/**< Must be zero */
} PACKED;

typedef struct s_PXENV_UNDI_TRANSMIT PXENV_UNDI_TRANSMIT_t;

extern PXENV_EXIT_t pxenv_undi_transmit ( struct s_PXENV_UNDI_TRANSMIT
					  *undi_transmit );

/** @} */ /* pxenv_undi_transmit */

/** @defgroup pxenv_undi_set_mcast_address PXENV_UNDI_SET_MCAST_ADDRESS
 *
 *  UNDI SET MULTICAST ADDRESS
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_set_mcast_address() */
#define	PXENV_UNDI_SET_MCAST_ADDRESS	0x0009

/** Parameter block for pxenv_undi_set_mcast_address() */
struct s_PXENV_UNDI_SET_MCAST_ADDRESS {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** List of multicast addresses */
	struct s_PXENV_UNDI_MCAST_ADDRESS R_Mcast_Buf;
} PACKED;

typedef struct s_PXENV_UNDI_SET_MCAST_ADDRESS PXENV_UNDI_SET_MCAST_ADDRESS_t;

extern PXENV_EXIT_t pxenv_undi_set_mcast_address (
	       struct s_PXENV_UNDI_SET_MCAST_ADDRESS *undi_set_mcast_address );

/** @} */ /* pxenv_undi_set_mcast_address */

/** @defgroup pxenv_undi_set_station_address PXENV_UNDI_SET_STATION_ADDRESS
 *
 *  UNDI SET STATION ADDRESS
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_set_station_address() */
#define	PXENV_UNDI_SET_STATION_ADDRESS	0x000a

/** Parameter block for pxenv_undi_set_station_address() */
struct s_PXENV_UNDI_SET_STATION_ADDRESS {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	MAC_ADDR_t StationAddress;	/**< Station MAC address */
} PACKED;

typedef struct s_PXENV_UNDI_SET_STATION_ADDRESS PXENV_UNDI_SET_STATION_ADDRESS_t;

extern PXENV_EXIT_t pxenv_undi_set_station_address (
	   struct s_PXENV_UNDI_SET_STATION_ADDRESS *undi_set_station_address );

/** @} */ /* pxenv_undi_set_station_address */

/** @defgroup pxenv_undi_set_packet_filter PXENV_UNDI_SET_PACKET_FILTER
 *
 *  UNDI SET PACKET FILTER
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_set_packet_filter() */
#define	PXENV_UNDI_SET_PACKET_FILTER	0x000b

/** Parameter block for pxenv_undi_set_packet_filter() */
struct s_PXENV_UNDI_SET_PACKET_FILTER {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Receive packet filter
	 *
	 * This field takes the same values as
	 * s_PXENV_UNDI_OPEN::PktFilter.
	 *
	 * @note Yes, this field is a different size to
	 * s_PXENV_UNDI_OPEN::PktFilter.  Blame "the managers at Intel
	 * who apparently let a consultant come up with the spec
	 * without any kind of adult supervision" (quote from hpa).
	 */
	UINT8_t filter;
} PACKED;

typedef struct s_PXENV_UNDI_SET_PACKET_FILTER PXENV_UNDI_SET_PACKET_FILTER_t;

extern PXENV_EXIT_t pxenv_undi_set_packet_filter (
	       struct s_PXENV_UNDI_SET_PACKET_FILTER *undi_set_packet_filter );

/** @} */ /* pxenv_undi_set_packet_filter */

/** @defgroup pxenv_undi_get_information PXENV_UNDI_GET_INFORMATION
 *
 *  UNDI GET INFORMATION
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_get_information() */
#define	PXENV_UNDI_GET_INFORMATION	0x000c

#define ETHER_TYPE		1	/**< Ethernet (10Mb) */
#define EXP_ETHER_TYPE		2	/**< Experimental Ethernet (3Mb) */
#define AX25_TYPE		3	/**< Amateur Radio AX.25 */
#define TOKEN_RING_TYPE		4	/**< Proteon ProNET Token Ring */
#define CHAOS_TYPE		5	/**< Chaos */
#define IEEE_TYPE		6	/**< IEEE 802 Networks */
#define ARCNET_TYPE		7	/**< ARCNET */

/** Parameter block for pxenv_undi_get_information() */
struct s_PXENV_UNDI_GET_INFORMATION {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	UINT16_t BaseIo;		/**< I/O base address */
	UINT16_t IntNumber;		/**< IRQ number */
	UINT16_t MaxTranUnit;		/**< Adapter MTU */
	/** Hardware type
	 *
	 * Valid values are defined in RFC1010 ("Assigned numbers"),
	 * and are #ETHER_TYPE, #EXP_ETHER_TYPE, #AX25_TYPE,
	 * #TOKEN_RING_TYPE, #CHAOS_TYPE, #IEEE_TYPE or #ARCNET_TYPE.
	 */
	UINT16_t HwType;
	UINT16_t HwAddrLen;		/**< MAC address length */
	MAC_ADDR_t CurrentNodeAddress;	/**< Current MAC address */
	MAC_ADDR_t PermNodeAddress;	/**< Permanent (EEPROM) MAC address */
	SEGSEL_t ROMAddress;		/**< Real-mode ROM segment address */
	UINT16_t RxBufCt;		/**< Receive queue length */
	UINT16_t TxBufCt;		/**< Transmit queue length */
} PACKED;

typedef struct s_PXENV_UNDI_GET_INFORMATION PXENV_UNDI_GET_INFORMATION_t;

extern PXENV_EXIT_t pxenv_undi_get_information (
		   struct s_PXENV_UNDI_GET_INFORMATION *undi_get_information );

/** @} */ /* pxenv_undi_get_information */

/** @defgroup pxenv_undi_get_statistics PXENV_UNDI_GET_STATISTICS
 *
 *  UNDI GET STATISTICS
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_get_statistics() */
#define	PXENV_UNDI_GET_STATISTICS	0x000d

/** Parameter block for pxenv_undi_get_statistics() */
struct s_PXENV_UNDI_GET_STATISTICS {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	UINT32_t XmtGoodFrames;		/**< Successful transmission count */
	UINT32_t RcvGoodFrames;		/**< Successful reception count */
	UINT32_t RcvCRCErrors;		/**< Receive CRC error count */
	UINT32_t RcvResourceErrors;	/**< Receive queue overflow count */
} PACKED;

typedef struct s_PXENV_UNDI_GET_STATISTICS PXENV_UNDI_GET_STATISTICS_t;

extern PXENV_EXIT_t pxenv_undi_get_statistics (
		     struct s_PXENV_UNDI_GET_STATISTICS *undi_get_statistics );

/** @} */ /* pxenv_undi_get_statistics */

/** @defgroup pxenv_undi_clear_statistics PXENV_UNDI_CLEAR_STATISTICS
 *
 *  UNDI CLEAR STATISTICS
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_clear_statistics() */
#define	PXENV_UNDI_CLEAR_STATISTICS	0x000e

/** Parameter block for pxenv_undi_clear_statistics() */
struct s_PXENV_UNDI_CLEAR_STATISTICS {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_CLEAR_STATISTICS PXENV_UNDI_CLEAR_STATISTICS_t;

extern PXENV_EXIT_t pxenv_undi_clear_statistics (
		 struct s_PXENV_UNDI_CLEAR_STATISTICS *undi_clear_statistics );

/** @} */ /* pxenv_undi_clear_statistics */

/** @defgroup pxenv_undi_initiate_diags PXENV_UNDI_INITIATE_DIAGS
 *
 *  UNDI INITIATE DIAGS
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_initiate_diags() */
#define	PXENV_UNDI_INITIATE_DIAGS	0x000f

/** Parameter block for pxenv_undi_initiate_diags() */
struct s_PXENV_UNDI_INITIATE_DIAGS {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_INITIATE_DIAGS PXENV_UNDI_INITIATE_DIAGS_t;

extern PXENV_EXIT_t pxenv_undi_initiate_diags (
		     struct s_PXENV_UNDI_INITIATE_DIAGS *undi_initiate_diags );

/** @} */ /* pxenv_undi_initiate_diags */

/** @defgroup pxenv_undi_force_interrupt PXENV_UNDI_FORCE_INTERRUPT
 *
 *  UNDI FORCE INTERRUPT
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_force_interrupt() */
#define	PXENV_UNDI_FORCE_INTERRUPT	0x0010

/** Parameter block for pxenv_undi_force_interrupt() */
struct s_PXENV_UNDI_FORCE_INTERRUPT {
	PXENV_STATUS_t	Status;		/**< PXE status code */
} PACKED;

typedef struct s_PXENV_UNDI_FORCE_INTERRUPT PXENV_UNDI_FORCE_INTERRUPT_t;

extern PXENV_EXIT_t pxenv_undi_force_interrupt (
		   struct s_PXENV_UNDI_FORCE_INTERRUPT *undi_force_interrupt );

/** @} */ /* pxenv_undi_force_interrupt */

/** @defgroup pxenv_undi_get_mcast_address PXENV_UNDI_GET_MCAST_ADDRESS
 *
 *  UNDI GET MULTICAST ADDRESS
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_get_mcast_address() */
#define	PXENV_UNDI_GET_MCAST_ADDRESS	0x0011

/** Parameter block for pxenv_undi_get_mcast_address() */
struct s_PXENV_UNDI_GET_MCAST_ADDRESS {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	IP4_t InetAddr;			/**< Multicast IP address */
	MAC_ADDR_t MediaAddr;		/**< Multicast MAC address */
} PACKED;

typedef struct s_PXENV_UNDI_GET_MCAST_ADDRESS PXENV_UNDI_GET_MCAST_ADDRESS_t;

extern PXENV_EXIT_t pxenv_undi_get_mcast_address (
	       struct s_PXENV_UNDI_GET_MCAST_ADDRESS *undi_get_mcast_address );

/** @} */ /* pxenv_undi_get_mcast_address */

/** @defgroup pxenv_undi_get_nic_type PXENV_UNDI_GET_NIC_TYPE
 *
 *  UNDI GET NIC TYPE
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_get_nic_type() */
#define	PXENV_UNDI_GET_NIC_TYPE		0x0012

#define PCI_NIC		2		/**< PCI network card */
#define PnP_NIC		3		/**< ISAPnP network card */
#define CardBus_NIC	4		/**< CardBus network card */

/** Information for a PCI or equivalent NIC */
struct pci_nic_info {
	UINT16_t Vendor_ID;		/**< PCI vendor ID */
	UINT16_t Dev_ID;		/**< PCI device ID */
	UINT8_t Base_Class;		/**< PCI base class */
	UINT8_t Sub_Class;		/**< PCI sub class */
	UINT8_t Prog_Intf;		/**< PCI programming interface */
	UINT8_t Rev;			/**< PCI revision */
	UINT16_t BusDevFunc;		/**< PCI bus:dev:fn address */
	UINT16_t SubVendor_ID;		/**< PCI subvendor ID */
	UINT16_t SubDevice_ID;		/**< PCI subdevice ID */
} PACKED;
 
/** Information for an ISAPnP or equivalent NIC */
struct pnp_nic_info {
	UINT32_t EISA_Dev_ID;		/**< EISA device ID */
	UINT8_t Base_Class;		/**< Base class */
	UINT8_t Sub_Class;		/**< Sub class */
	UINT8_t Prog_Intf;		/**< Programming interface */
	/** Card Select Number assigned to card */
	UINT16_t CardSelNum;
} PACKED;

/** Parameter block for pxenv_undi_get_nic_type() */
struct s_PXENV_UNDI_GET_NIC_TYPE {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** NIC type
	 *
	 * Valid values are #PCI_NIC, #PnP_NIC or #CardBus_NIC.
	 */
	UINT8_t NicType;
	/** NIC information */
	union nic_type_info {
		/** NIC information (if #NicType==#PCI_NIC) */
		struct pci_nic_info pci;
		/** NIC information (if #NicType==#CardBus_NIC) */
		struct pci_nic_info cardbus;
		/** NIC information (if #NicType==#PnP_NIC) */
		struct pnp_nic_info pnp;
	} info;
} PACKED;

typedef struct s_PXENV_UNDI_GET_NIC_TYPE PXENV_UNDI_GET_NIC_TYPE_t;

extern PXENV_EXIT_t pxenv_undi_get_nic_type ( 
			 struct s_PXENV_UNDI_GET_NIC_TYPE *undi_get_nic_type );

/** @} */ /* pxenv_undi_get_nic_type */

/** @defgroup pxenv_undi_get_iface_info PXENV_UNDI_GET_IFACE_INFO
 *
 *  UNDI GET IFACE INFO
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_get_iface_info() */
#define	PXENV_UNDI_GET_IFACE_INFO	0x0013

/** Parameter block for pxenv_undi_get_iface_info() */
struct s_PXENV_UNDI_GET_IFACE_INFO {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Interface type
	 *
	 * This is defined in the NDIS 2.0 specification to be one of
	 * the strings "802.3", "802.4", "802.5", "802.6", "DIX",
	 * "DIX+802.3", "APPLETALK", "ARCNET", "FDDI", "SDLC", "BSC",
	 * "HDLC", or "ISDN".
	 *
	 * "Normal" Ethernet, for various historical reasons, is
	 * "DIX+802.3".
	 */
	UINT8_t IfaceType[16];
	UINT32_t LinkSpeed;		/**< Link speed, in bits per second */
	/** Service flags
	 *
	 * These are the "service flags" defined in the "MAC
	 * Service-Specific Characteristics" table in the NDIS 2.0
	 * specification.  Almost all of them are irrelevant to PXE.
	 */
	UINT32_t ServiceFlags;
	UINT32_t Reserved[4];		/**< Must be zero */
} PACKED;

typedef struct s_PXENV_UNDI_GET_IFACE_INFO PXENV_UNDI_GET_IFACE_INFO_t;

extern PXENV_EXIT_t pxenv_undi_get_iface_info (
		     struct s_PXENV_UNDI_GET_IFACE_INFO *undi_get_iface_info );

/** @} */ /* pxenv_undi_get_iface_info */

/** @defgroup pxenv_undi_get_state PXENV_UNDI_GET_STATE
 *
 *  UNDI GET STATE
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_get_state() */
#define PXENV_UNDI_GET_STATE		0x0015

/** pxenv_start_undi() has been called */
#define PXE_UNDI_GET_STATE_STARTED	1
/** pxenv_undi_initialize() has been called */
#define PXE_UNDI_GET_STATE_INITIALIZED	2
/** pxenv_undi_open() has been called */
#define PXE_UNDI_GET_STATE_OPENED	3

/** Parameter block for pxenv_undi_get_state() */
struct s_PXENV_UNDI_GET_STATE {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Current state of the UNDI driver
	 *
	 * Valid values are #PXE_UNDI_GET_STATE_STARTED,
	 * #PXE_UNDI_GET_STATE_INITIALIZED or
	 * #PXE_UNDI_GET_STATE_OPENED.
	 */
	UINT8_t UNDIstate;
} PACKED;

typedef struct s_PXENV_UNDI_GET_STATE PXENV_UNDI_GET_STATE_t;

extern PXENV_EXIT_t pxenv_undi_get_state ( struct s_PXENV_UNDI_GET_STATE
					   *undi_get_state );

/** @} */ /* pxenv_undi_get_state */

/** @defgroup pxenv_undi_isr PXENV_UNDI_ISR
 *
 *  UNDI ISR
 *
 *  @{
 */

/** PXE API function code for pxenv_undi_isr() */
#define	PXENV_UNDI_ISR			0x0014

/** Determine whether or not this is our interrupt */
#define PXENV_UNDI_ISR_IN_START		1
/** Start processing interrupt */
#define PXENV_UNDI_ISR_IN_PROCESS	2
/** Continue processing interrupt */
#define PXENV_UNDI_ISR_IN_GET_NEXT	3
/** This interrupt was ours */
#define PXENV_UNDI_ISR_OUT_OURS		0
/** This interrupt was not ours */
#define PXENV_UNDI_ISR_OUT_NOT_OURS	1
/** Finished processing interrupt */
#define PXENV_UNDI_ISR_OUT_DONE		0
/** A packet transmission has completed */
#define PXENV_UNDI_ISR_OUT_TRANSMIT	2
/** A packet has been received */
#define PXENV_UNDI_ISR_OUT_RECEIVE	3
/** We are already in the middle of processing an interrupt */
#define PXENV_UNDI_ISR_OUT_BUSY		4

/** Unicast packet (or packet captured in promiscuous mode) */
#define P_DIRECTED	0
/** Broadcast packet */
#define P_BROADCAST	1
/** Multicast packet */
#define P_MULTICAST	2

/** Parameter block for pxenv_undi_isr() */
struct s_PXENV_UNDI_ISR {
	PXENV_STATUS_t	Status;		/**< PXE status code */
	/** Function flag
	 *
	 * Valid values are #PXENV_UNDI_ISR_IN_START,
	 * #PXENV_UNDI_ISR_IN_PROCESS, #PXENV_UNDI_ISR_IN_GET_NEXT,
	 * #PXENV_UNDI_ISR_OUT_OURS, #PXENV_UNDI_ISR_OUT_NOT_OURS,
	 * #PXENV_UNDI_ISR_OUT_DONE, #PXENV_UNDI_ISR_OUT_TRANSMIT,
	 * #PXENV_UNDI_ISR_OUT_RECEIVE or #PXENV_UNDI_ISR_OUT_BUSY.
	 */
	UINT16_t FuncFlag;
	UINT16_t BufferLength;		/**< Data buffer length */
	UINT16_t FrameLength;		/**< Total frame length */
	UINT16_t FrameHeaderLength;	/**< Frame header length */
	SEGOFF16_t Frame;		/**< Data buffer address */
	/** Protocol type
	 *
	 * Valid values are #P_IP, #P_ARP, #P_RARP or #P_OTHER.
	 */
	UINT8_t ProtType;
	/** Packet type
	 *
	 * Valid values are #P_DIRECTED, #P_BROADCAST or #P_MULTICAST.
	 */
	UINT8_t PktType;
} PACKED;

typedef struct s_PXENV_UNDI_ISR PXENV_UNDI_ISR_t;

extern PXENV_EXIT_t pxenv_undi_isr ( struct s_PXENV_UNDI_ISR *undi_isr );

/** @} */ /* pxenv_undi_isr */

/** @} */ /* pxe_undi_api */

/** @} */ /* pxe */

#endif /* PXE_API_H */