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cmdpkt.h

/*
** -----------------------------------------------------------------------------
**
**  Perle Specialix driver for Linux
**  Ported from existing RIO Driver for SCO sources.
 *
 *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
 *
 *      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
 *      (at your option) 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.
**
**    Module            : cmdpkt.h
**    SID         : 1.2
**    Last Modified     : 11/6/98 11:34:09
**    Retrieved   : 11/6/98 11:34:20
**
**  ident @(#)cmdpkt.h  1.2
**
** -----------------------------------------------------------------------------
*/
#ifndef __rio_cmdpkt_h__
#define __rio_cmdpkt_h__

#ifdef SCCS_LABELS
#ifndef lint
static char *_cmdpkt_h_sccs_ = "@(#)cmdpkt.h    1.2";
#endif
#endif

/*
** overlays for the data area of a packet. Used in both directions
** (to build a packet to send, and to interpret a packet that arrives)
** and is very inconvenient for MIPS, so they appear as two separate
** structures - those used for modifying/reading packets on the card
** and those for modifying/reading packets in real memory, which have an _M
** suffix.
*/

#define     RTA_BOOT_DATA_SIZE (PKT_MAX_DATA_LEN-2)

/*
** The boot information packet looks like this:
** This structure overlays a PktCmd->CmdData structure, and so starts
** at Data[2] in the actual pkt!
*/
struct BootSequence {
      u16 NumPackets;
      u16 LoadBase;
      u16 CodeSize;
};

#define     BOOT_SEQUENCE_LEN 8

struct SamTop {
      u8 Unit;
      u8 Link;
};

struct CmdHdr {
      u8 PcCommand;
      union {
            u8 PcPhbNum;
            u8 PcLinkNum;
            u8 PcIDNum;
      } U0;
};


struct PktCmd {
      union {
            struct {
                  struct CmdHdr CmdHdr;
                  struct BootSequence PcBootSequence;
            } S1;
            struct {
                  u16 PcSequence;
                  u8 PcBootData[RTA_BOOT_DATA_SIZE];
            } S2;
            struct {
                  u16 __crud__;
                  u8 PcUniqNum[4];  /* this is really a uint. */
                  u8 PcModuleTypes; /* what modules are fitted */
            } S3;
            struct {
                  struct CmdHdr CmdHdr;
                  u8 __undefined__;
                  u8 PcModemStatus;
                  u8 PcPortStatus;
                  u8 PcSubCommand;  /* commands like mem or register dump */
                  u16 PcSubAddr;    /* Address for command */
                  u8 PcSubData[64]; /* Date area for command */
            } S4;
            struct {
                  struct CmdHdr CmdHdr;
                  u8 PcCommandText[1];
                  u8 __crud__[20];
                  u8 PcIDNum2;      /* It had to go somewhere! */
            } S5;
            struct {
                  struct CmdHdr CmdHdr;
                  struct SamTop Topology[LINKS_PER_UNIT];
            } S6;
      } U1;
};

struct PktCmd_M {
      union {
            struct {
                  struct {
                        u8 PcCommand;
                        union {
                              u8 PcPhbNum;
                              u8 PcLinkNum;
                              u8 PcIDNum;
                        } U0;
                  } CmdHdr;
                  struct {
                        u16 NumPackets;
                        u16 LoadBase;
                        u16 CodeSize;
                  } PcBootSequence;
            } S1;
            struct {
                  u16 PcSequence;
                  u8 PcBootData[RTA_BOOT_DATA_SIZE];
            } S2;
            struct {
                  u16 __crud__;
                  u8 PcUniqNum[4];  /* this is really a uint. */
                  u8 PcModuleTypes; /* what modules are fitted */
            } S3;
            struct {
                  u16 __cmd_hdr__;
                  u8 __undefined__;
                  u8 PcModemStatus;
                  u8 PcPortStatus;
                  u8 PcSubCommand;
                  u16 PcSubAddr;
                  u8 PcSubData[64];
            } S4;
            struct {
                  u16 __cmd_hdr__;
                  u8 PcCommandText[1];
                  u8 __crud__[20];
                  u8 PcIDNum2;      /* Tacked on end */
            } S5;
            struct {
                  u16 __cmd_hdr__;
                  struct Top Topology[LINKS_PER_UNIT];
            } S6;
      } U1;
};

#define Command         U1.S1.CmdHdr.PcCommand
#define PhbNum          U1.S1.CmdHdr.U0.PcPhbNum
#define IDNum           U1.S1.CmdHdr.U0.PcIDNum
#define IDNum2          U1.S5.PcIDNum2
#define LinkNum         U1.S1.CmdHdr.U0.PcLinkNum
#define Sequence  U1.S2.PcSequence
#define BootData  U1.S2.PcBootData
#define BootSequence    U1.S1.PcBootSequence
#define UniqNum         U1.S3.PcUniqNum
#define ModemStatus     U1.S4.PcModemStatus
#define PortStatus      U1.S4.PcPortStatus
#define SubCommand      U1.S4.PcSubCommand
#define SubAddr         U1.S4.PcSubAddr
#define SubData         U1.S4.PcSubData
#define CommandText     U1.S5.PcCommandText
#define RouteTopology   U1.S6.Topology
#define ModuleTypes     U1.S3.PcModuleTypes

#endif

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