release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/char/rio/phb.h

   1 /****************************************************************************
   2  *******                                                              *******
   3  *******                 P H B     H E A D E R                        *******
   4  *******                                                              *******
   5  ****************************************************************************
   6
   7  Author  : Ian Nandhra, Jeremy Rolls
   8  Date    :
   9
  10  *
  11  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
  12  *
  13  *      This program is free software; you can redistribute it and/or modify
  14  *      it under the terms of the GNU General Public License as published by
  15  *      the Free Software Foundation; either version 2 of the License, or
  16  *      (at your option) any later version.
  17  *
  18  *      This program is distributed in the hope that it will be useful,
  19  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *      GNU General Public License for more details.
  22  *
  23  *      You should have received a copy of the GNU General Public License
  24  *      along with this program; if not, write to the Free Software
  25  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26
  27  Version : 0.01
  28
  29
  30                             Mods
  31  ----------------------------------------------------------------------------
  32   Date     By                Description
  33  ----------------------------------------------------------------------------
  34
  35  ***************************************************************************/
  36
  37 #ifndef _phb_h
  38 #define _phb_h 1
  39
  40 /*************************************************
  41  * Handshake asserted. Deasserted by the LTT(s)
  42  ************************************************/
  43 #define PHB_HANDSHAKE_SET      ((ushort) 0x001) /* Set by LRT */
  44
  45 #define PHB_HANDSHAKE_RESET     ((ushort) 0x002)        /* Set by ISR / driver */
  46
  47 #define PHB_HANDSHAKE_FLAGS     (PHB_HANDSHAKE_RESET | PHB_HANDSHAKE_SET)
  48                                                 /* Reset by ltt */
  49
  50
  51 /*************************************************
  52  * Maximum number of PHB's
  53  ************************************************/
  54 #define MAX_PHB               ((ushort) 128)    /* range 0-127 */
  55
  56 /*************************************************
  57  * Defines for the mode fields
  58  ************************************************/
  59 #define TXPKT_INCOMPLETE        0x0001  /* Previous tx packet not completed */
  60 #define TXINTR_ENABLED          0x0002  /* Tx interrupt is enabled */
  61 #define TX_TAB3                 0x0004  /* TAB3 mode */
  62 #define TX_OCRNL                0x0008  /* OCRNL mode */
  63 #define TX_ONLCR                0x0010  /* ONLCR mode */
  64 #define TX_SENDSPACES           0x0020  /* Send n spaces command needs
  65                                            completing */
  66 #define TX_SENDNULL             0x0040  /* Escaping NULL needs completing */
  67 #define TX_SENDLF               0x0080  /* LF -> CR LF needs completing */
  68 #define TX_PARALLELBUG          0x0100  /* CD1400 LF -> CR LF bug on parallel
  69                                            port */
  70 #define TX_HANGOVER             (TX_SENDSPACES | TX_SENDLF | TX_SENDNULL)
  71 #define TX_DTRFLOW              0x0200  /* DTR tx flow control */
  72 #define TX_DTRFLOWED            0x0400  /* DTR is low - don't allow more data
  73                                            into the FIFO */
  74 #define TX_DATAINFIFO           0x0800  /* There is data in the FIFO */
  75 #define TX_BUSY                 0x1000  /* Data in FIFO, shift or holding regs */
  76
  77 #define RX_SPARE                0x0001  /* SPARE */
  78 #define RXINTR_ENABLED          0x0002  /* Rx interrupt enabled */
  79 #define RX_ICRNL                0x0008  /* ICRNL mode */
  80 #define RX_INLCR                0x0010  /* INLCR mode */
  81 #define RX_IGNCR                0x0020  /* IGNCR mode */
  82 #define RX_CTSFLOW              0x0040  /* CTSFLOW enabled */
  83 #define RX_IXOFF                0x0080  /* IXOFF enabled */
  84 #define RX_CTSFLOWED            0x0100  /* CTSFLOW and CTS dropped */
  85 #define RX_IXOFFED              0x0200  /* IXOFF and xoff sent */
  86 #define RX_BUFFERED             0x0400  /* Try and pass on complete packets */
  87
  88 #define PORT_ISOPEN             0x0001  /* Port open? */
  89 #define PORT_HUPCL              0x0002  /* Hangup on close? */
  90 #define PORT_MOPENPEND          0x0004  /* Modem open pending */
  91 #define PORT_ISPARALLEL         0x0008  /* Parallel port */
  92 #define PORT_BREAK              0x0010  /* Port on break */
  93 #define PORT_STATUSPEND         0x0020  /* Status packet pending */
  94 #define PORT_BREAKPEND          0x0040  /* Break packet pending */
  95 #define PORT_MODEMPEND          0x0080  /* Modem status packet pending */
  96 #define PORT_PARALLELBUG        0x0100  /* CD1400 LF -> CR LF bug on parallel
  97                                            port */
  98 #define PORT_FULLMODEM          0x0200  /* Full modem signals */
  99 #define PORT_RJ45               0x0400  /* RJ45 connector - no RI signal */
 100 #define PORT_RESTRICTED         0x0600  /* Restricted connector - no RI / DTR */
 101
 102 #define PORT_MODEMBITS          0x0600  /* Mask for modem fields */
 103
 104 #define PORT_WCLOSE             0x0800  /* Waiting for close */
 105 #define PORT_HANDSHAKEFIX       0x1000  /* Port has H/W flow control fix */
 106 #define PORT_WASPCLOSED         0x2000  /* Port closed with PCLOSE */
 107 #define DUMPMODE                0x4000  /* Dump RTA mem */
 108 #define READ_REG                0x8000  /* Read CD1400 register */
 109
 110
 111
 112 /**************************************************************************
 113  * PHB Structure
 114  * A  few words.
 115  *
 116  * Normally Packets are added to the end of the list and removed from
 117  * the start. The pointer tx_add points to a SPACE to put a Packet.
 118  * The pointer tx_remove points to the next Packet to remove
 119  *************************************************************************/
 120
 121 struct PHB {
 122         u8 source;
 123         u8 handshake;
 124         u8 status;
 125         u16 timeout;            /* Maximum of 1.9 seconds */
 126         u8 link;                /* Send down this link */
 127         u8 destination;
 128         u16 tx_start;
 129         u16 tx_end;
 130         u16 tx_add;
 131         u16 tx_remove;
 132
 133         u16 rx_start;
 134         u16 rx_end;
 135         u16 rx_add;
 136         u16 rx_remove;
 137
 138 };
 139
 140 #endif
 141
 142 /*********** end of file ***********/