drivers/char/rio/cmdpkt.h

   1 /*
   2 ** -----------------------------------------------------------------------------
   3 **
   4 **  Perle Specialix driver for Linux
   5 **  Ported from existing RIO Driver for SCO sources.
   6  *
   7  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  *
  14  *      This program is distributed in the hope that it will be useful,
  15  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *      GNU General Public License for more details.
  18  *
  19  *      You should have received a copy of the GNU General Public License
  20  *      along with this program; if not, write to the Free Software
  21  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 **
  23 **      Module          : cmdpkt.h
  24 **      SID             : 1.2
  25 **      Last Modified   : 11/6/98 11:34:09
  26 **      Retrieved       : 11/6/98 11:34:20
  27 **
  28 **  ident @(#)cmdpkt.h  1.2
  29 **
  30 ** -----------------------------------------------------------------------------
  31 */
  32 #ifndef __rio_cmdpkt_h__
  33 #define __rio_cmdpkt_h__
  34
  35 /*
  36 ** overlays for the data area of a packet. Used in both directions
  37 ** (to build a packet to send, and to interpret a packet that arrives)
  38 ** and is very inconvenient for MIPS, so they appear as two separate
  39 ** structures - those used for modifying/reading packets on the card
  40 ** and those for modifying/reading packets in real memory, which have an _M
  41 ** suffix.
  42 */
  43
  44 #define RTA_BOOT_DATA_SIZE (PKT_MAX_DATA_LEN-2)
  45
  46 /*
  47 ** The boot information packet looks like this:
  48 ** This structure overlays a PktCmd->CmdData structure, and so starts
  49 ** at Data[2] in the actual pkt!
  50 */
  51 struct BootSequence {
  52         u16 NumPackets;
  53         u16 LoadBase;
  54         u16 CodeSize;
  55 };
  56
  57 #define BOOT_SEQUENCE_LEN       8
  58
  59 struct SamTop {
  60         u8 Unit;
  61         u8 Link;
  62 };
  63
  64 struct CmdHdr {
  65         u8 PcCommand;
  66         union {
  67                 u8 PcPhbNum;
  68                 u8 PcLinkNum;
  69                 u8 PcIDNum;
  70         } U0;
  71 };
  72
  73
  74 struct PktCmd {
  75         union {
  76                 struct {
  77                         struct CmdHdr CmdHdr;
  78                         struct BootSequence PcBootSequence;
  79                 } S1;
  80                 struct {
  81                         u16 PcSequence;
  82                         u8 PcBootData[RTA_BOOT_DATA_SIZE];
  83                 } S2;
  84                 struct {
  85                         u16 __crud__;
  86                         u8 PcUniqNum[4];        /* this is really a uint. */
  87                         u8 PcModuleTypes;       /* what modules are fitted */
  88                 } S3;
  89                 struct {
  90                         struct CmdHdr CmdHdr;
  91                         u8 __undefined__;
  92                         u8 PcModemStatus;
  93                         u8 PcPortStatus;
  94                         u8 PcSubCommand;        /* commands like mem or register dump */
  95                         u16 PcSubAddr;  /* Address for command */
  96                         u8 PcSubData[64];       /* Date area for command */
  97                 } S4;
  98                 struct {
  99                         struct CmdHdr CmdHdr;
 100                         u8 PcCommandText[1];
 101                         u8 __crud__[20];
 102                         u8 PcIDNum2;    /* It had to go somewhere! */
 103                 } S5;
 104                 struct {
 105                         struct CmdHdr CmdHdr;
 106                         struct SamTop Topology[LINKS_PER_UNIT];
 107                 } S6;
 108         } U1;
 109 };
 110
 111 struct PktCmd_M {
 112         union {
 113                 struct {
 114                         struct {
 115                                 u8 PcCommand;
 116                                 union {
 117                                         u8 PcPhbNum;
 118                                         u8 PcLinkNum;
 119                                         u8 PcIDNum;
 120                                 } U0;
 121                         } CmdHdr;
 122                         struct {
 123                                 u16 NumPackets;
 124                                 u16 LoadBase;
 125                                 u16 CodeSize;
 126                         } PcBootSequence;
 127                 } S1;
 128                 struct {
 129                         u16 PcSequence;
 130                         u8 PcBootData[RTA_BOOT_DATA_SIZE];
 131                 } S2;
 132                 struct {
 133                         u16 __crud__;
 134                         u8 PcUniqNum[4];        /* this is really a uint. */
 135                         u8 PcModuleTypes;       /* what modules are fitted */
 136                 } S3;
 137                 struct {
 138                         u16 __cmd_hdr__;
 139                         u8 __undefined__;
 140                         u8 PcModemStatus;
 141                         u8 PcPortStatus;
 142                         u8 PcSubCommand;
 143                         u16 PcSubAddr;
 144                         u8 PcSubData[64];
 145                 } S4;
 146                 struct {
 147                         u16 __cmd_hdr__;
 148                         u8 PcCommandText[1];
 149                         u8 __crud__[20];
 150                         u8 PcIDNum2;    /* Tacked on end */
 151                 } S5;
 152                 struct {
 153                         u16 __cmd_hdr__;
 154                         struct Top Topology[LINKS_PER_UNIT];
 155                 } S6;
 156         } U1;
 157 };
 158
 159 #define Command         U1.S1.CmdHdr.PcCommand
 160 #define PhbNum          U1.S1.CmdHdr.U0.PcPhbNum
 161 #define IDNum           U1.S1.CmdHdr.U0.PcIDNum
 162 #define IDNum2          U1.S5.PcIDNum2
 163 #define LinkNum         U1.S1.CmdHdr.U0.PcLinkNum
 164 #define Sequence        U1.S2.PcSequence
 165 #define BootData        U1.S2.PcBootData
 166 #define BootSequence    U1.S1.PcBootSequence
 167 #define UniqNum         U1.S3.PcUniqNum
 168 #define ModemStatus     U1.S4.PcModemStatus
 169 #define PortStatus      U1.S4.PcPortStatus
 170 #define SubCommand      U1.S4.PcSubCommand
 171 #define SubAddr         U1.S4.PcSubAddr
 172 #define SubData         U1.S4.PcSubData
 173 #define CommandText     U1.S5.PcCommandText
 174 #define RouteTopology   U1.S6.Topology
 175 #define ModuleTypes     U1.S3.PcModuleTypes
 176
 177 #endif