LXR linux/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*/
  51struct BootSequence {
  52        u16 NumPackets;
  53        u16 LoadBase;
  54        u16 CodeSize;
  55};
  56
  57#define BOOT_SEQUENCE_LEN       8
  58
  59struct SamTop {
  60        u8 Unit;
  61        u8 Link;
  62};
  63
  64struct CmdHdr {
  65        u8 PcCommand;
  66        union {
  67                u8 PcPhbNum;
  68                u8 PcLinkNum;
  69                u8 PcIDNum;
  70        } U0;
  71};
  72
  73
  74struct 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
 111struct 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
 178