linux/drivers/char/rio/rio.h
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   1/*
   2** -----------------------------------------------------------------------------
   3**
   4**  Perle Specialix driver for Linux
   5**  Ported from existing RIO Driver for SCO sources.
   6 *
   7 *  (C) 1990 - 1998 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          : rio.h
  24**      SID             : 1.3
  25**      Last Modified   : 11/6/98 11:34:13
  26**      Retrieved       : 11/6/98 11:34:22
  27**
  28**  ident @(#)rio.h     1.3
  29**
  30** -----------------------------------------------------------------------------
  31*/
  32
  33#ifndef __rio_rio_h__
  34#define __rio_rio_h__
  35
  36/*
  37**      Maximum numbers of things
  38*/
  39#define RIO_SLOTS       4       /* number of configuration slots */
  40#define RIO_HOSTS       4       /* number of hosts that can be found */
  41#define PORTS_PER_HOST  128     /* number of ports per host */
  42#define LINKS_PER_UNIT  4       /* number of links from a host */
  43#define RIO_PORTS       (PORTS_PER_HOST * RIO_HOSTS)    /* max. no. of ports */
  44#define RTAS_PER_HOST   (MAX_RUP)       /* number of RTAs per host */
  45#define PORTS_PER_RTA   (PORTS_PER_HOST/RTAS_PER_HOST)  /* ports on a rta */
  46#define PORTS_PER_MODULE 4      /* number of ports on a plug-in module */
  47                                /* number of modules on an RTA */
  48#define MODULES_PER_RTA  (PORTS_PER_RTA/PORTS_PER_MODULE)
  49#define MAX_PRODUCT     16      /* numbr of different product codes */
  50#define MAX_MODULE_TYPES 16     /* number of different types of module */
  51
  52#define RIO_CONTROL_DEV 128     /* minor number of host/control device */
  53#define RIO_INVALID_MAJOR 0     /* test first host card's major no for validity */
  54
  55/*
  56** number of RTAs that can be bound to a master
  57*/
  58#define MAX_RTA_BINDINGS (MAX_RUP * RIO_HOSTS)
  59
  60/*
  61**      Unit types
  62*/
  63#define PC_RTA16        0x90000000
  64#define PC_RTA8         0xe0000000
  65#define TYPE_HOST       0
  66#define TYPE_RTA8       1
  67#define TYPE_RTA16      2
  68
  69/*
  70**      Flag values returned by functions
  71*/
  72
  73#define RIO_FAIL        -1
  74
  75/*
  76** SysPort value for something that hasn't any ports
  77*/
  78#define NO_PORT 0xFFFFFFFF
  79
  80/*
  81** Unit ID Of all hosts
  82*/
  83#define HOST_ID 0
  84
  85/*
  86** Break bytes into nybles
  87*/
  88#define LONYBLE(X)      ((X) & 0xF)
  89#define HINYBLE(X)      (((X)>>4) & 0xF)
  90
  91/*
  92** Flag values passed into some functions
  93*/
  94#define DONT_SLEEP      0
  95#define OK_TO_SLEEP     1
  96
  97#define DONT_PRINT      1
  98#define DO_PRINT        0
  99
 100#define PRINT_TO_LOG_CONS       0
 101#define PRINT_TO_CONS   1
 102#define PRINT_TO_LOG    2
 103
 104/*
 105** Timeout has trouble with times of less than 3 ticks...
 106*/
 107#define MIN_TIMEOUT     3
 108
 109/*
 110**      Generally useful constants
 111*/
 112
 113#define HUNDRED_MS              ((HZ/10)?(HZ/10):1)
 114#define ONE_MEG                 0x100000
 115#define SIXTY_FOUR_K            0x10000
 116
 117#define RIO_AT_MEM_SIZE         SIXTY_FOUR_K
 118#define RIO_EISA_MEM_SIZE       SIXTY_FOUR_K
 119#define RIO_MCA_MEM_SIZE        SIXTY_FOUR_K
 120
 121#define COOK_WELL               0
 122#define COOK_MEDIUM             1
 123#define COOK_RAW                2
 124
 125/*
 126**      Pointer manipulation stuff
 127**      RIO_PTR takes hostp->Caddr and the offset into the DP RAM area
 128**      and produces a UNIX caddr_t (pointer) to the object
 129**      RIO_OBJ takes hostp->Caddr and a UNIX pointer to an object and
 130**      returns the offset into the DP RAM area.
 131*/
 132#define RIO_PTR(C,O) (((unsigned char __iomem *)(C))+(0xFFFF&(O)))
 133#define RIO_OFF(C,O) ((unsigned char __iomem *)(O)-(unsigned char __iomem *)(C))
 134
 135/*
 136**      How to convert from various different device number formats:
 137**      DEV is a dev number, as passed to open, close etc - NOT a minor
 138**      number!
 139**/
 140
 141#define RIO_MODEM_MASK          0x1FF
 142#define RIO_MODEM_BIT           0x200
 143#define RIO_UNMODEM(DEV)        (MINOR(DEV) & RIO_MODEM_MASK)
 144#define RIO_ISMODEM(DEV)        (MINOR(DEV) & RIO_MODEM_BIT)
 145#define RIO_PORT(DEV,FIRST_MAJ) ( (MAJOR(DEV) - FIRST_MAJ) * PORTS_PER_HOST) \
 146                                        + MINOR(DEV)
 147#define CSUM(pkt_ptr)  (((u16 *)(pkt_ptr))[0] + ((u16 *)(pkt_ptr))[1] + \
 148                        ((u16 *)(pkt_ptr))[2] + ((u16 *)(pkt_ptr))[3] + \
 149                        ((u16 *)(pkt_ptr))[4] + ((u16 *)(pkt_ptr))[5] + \
 150                        ((u16 *)(pkt_ptr))[6] + ((u16 *)(pkt_ptr))[7] + \
 151                        ((u16 *)(pkt_ptr))[8] + ((u16 *)(pkt_ptr))[9] )
 152
 153#define RIO_LINK_ENABLE 0x80FF  /* FF is a hack, mainly for Mips, to        */
 154                               /* prevent a really stupid race condition.  */
 155
 156#define NOT_INITIALISED 0
 157#define INITIALISED     1
 158
 159#define NOT_POLLING     0
 160#define POLLING         1
 161
 162#define NOT_CHANGED     0
 163#define CHANGED         1
 164
 165#define NOT_INUSE       0
 166
 167#define DISCONNECT      0
 168#define CONNECT         1
 169
 170/* ------ Control Codes ------ */
 171
 172#define CONTROL         '^'
 173#define IFOAD           ( CONTROL + 1 )
 174#define IDENTIFY        ( CONTROL + 2 )
 175#define ZOMBIE          ( CONTROL + 3 )
 176#define UFOAD           ( CONTROL + 4 )
 177#define IWAIT           ( CONTROL + 5 )
 178
 179#define IFOAD_MAGIC     0xF0AD  /* of course */
 180#define ZOMBIE_MAGIC    (~0xDEAD)       /* not dead -> zombie */
 181#define UFOAD_MAGIC     0xD1E   /* kill-your-neighbour */
 182#define IWAIT_MAGIC     0xB1DE  /* Bide your time */
 183
 184/* ------ Error Codes ------ */
 185
 186#define E_NO_ERROR                       ((ushort) 0)
 187
 188/* ------ Free Lists ------ */
 189
 190struct rio_free_list {
 191        u16 next;
 192        u16 prev;
 193};
 194
 195/* NULL for card side linked lists */
 196#define TPNULL  ((ushort)(0x8000))
 197/* We can add another packet to a transmit queue if the packet pointer pointed
 198 * to by the TxAdd pointer has PKT_IN_USE clear in its address. */
 199#define PKT_IN_USE    0x1
 200
 201/* ------ Topology ------ */
 202
 203struct Top {
 204        u8 Unit;
 205        u8 Link;
 206};
 207
 208#endif                          /* __rio_h__ */
 209
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