include/linux/stallion.h

   1 /*****************************************************************************/
   2
   3 /*
   4  *      stallion.h  -- stallion multiport serial driver.
   5  *
   6  *      Copyright (C) 1996-1998  Stallion Technologies
   7  *      Copyright (C) 1994-1996  Greg Ungerer.
   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
  24 /*****************************************************************************/
  25 #ifndef _STALLION_H
  26 #define _STALLION_H
  27 /*****************************************************************************/
  28
  29 /*
  30  *      Define important driver constants here.
  31  */
  32 #define STL_MAXBRDS             4
  33 #define STL_MAXPANELS           4
  34 #define STL_MAXBANKS            8
  35 #define STL_PORTSPERPANEL       16
  36 #define STL_MAXPORTS            64
  37 #define STL_MAXDEVS             (STL_MAXBRDS * STL_MAXPORTS)
  38
  39
  40 /*
  41  *      Define a set of structures to hold all the board/panel/port info
  42  *      for our ports. These will be dynamically allocated as required.
  43  */
  44
  45 /*
  46  *      Define a ring queue structure for each port. This will hold the
  47  *      TX data waiting to be output. Characters are fed into this buffer
  48  *      from the line discipline (or even direct from user space!) and
  49  *      then fed into the UARTs during interrupts. Will use a classic ring
  50  *      queue here for this. The good thing about this type of ring queue
  51  *      is that the head and tail pointers can be updated without interrupt
  52  *      protection - since "write" code only needs to change the head, and
  53  *      interrupt code only needs to change the tail.
  54  */
  55 struct stlrq {
  56         char    *buf;
  57         char    *head;
  58         char    *tail;
  59 };
  60
  61 /*
  62  *      Port, panel and board structures to hold status info about each.
  63  *      The board structure contains pointers to structures for each panel
  64  *      connected to it, and in turn each panel structure contains pointers
  65  *      for each port structure for each port on that panel. Note that
  66  *      the port structure also contains the board and panel number that it
  67  *      is associated with, this makes it (fairly) easy to get back to the
  68  *      board/panel info for a port.
  69  */
  70 struct stlport {
  71         unsigned long           magic;
  72         struct tty_port         port;
  73         unsigned int            portnr;
  74         unsigned int            panelnr;
  75         unsigned int            brdnr;
  76         int                     ioaddr;
  77         int                     uartaddr;
  78         unsigned int            pagenr;
  79         unsigned long           istate;
  80         int                     baud_base;
  81         int                     custom_divisor;
  82         int                     close_delay;
  83         int                     closing_wait;
  84         int                     openwaitcnt;
  85         int                     brklen;
  86         unsigned int            sigs;
  87         unsigned int            rxignoremsk;
  88         unsigned int            rxmarkmsk;
  89         unsigned int            imr;
  90         unsigned int            crenable;
  91         unsigned long           clk;
  92         unsigned long           hwid;
  93         void                    *uartp;
  94         comstats_t              stats;
  95         struct stlrq            tx;
  96 };
  97
  98 struct stlpanel {
  99         unsigned long   magic;
 100         unsigned int    panelnr;
 101         unsigned int    brdnr;
 102         unsigned int    pagenr;
 103         unsigned int    nrports;
 104         int             iobase;
 105         void            *uartp;
 106         void            (*isr)(struct stlpanel *panelp, unsigned int iobase);
 107         unsigned int    hwid;
 108         unsigned int    ackmask;
 109         struct stlport  *ports[STL_PORTSPERPANEL];
 110 };
 111
 112 struct stlbrd {
 113         unsigned long   magic;
 114         unsigned int    brdnr;
 115         unsigned int    brdtype;
 116         unsigned int    state;
 117         unsigned int    nrpanels;
 118         unsigned int    nrports;
 119         unsigned int    nrbnks;
 120         int             irq;
 121         int             irqtype;
 122         int             (*isr)(struct stlbrd *brdp);
 123         unsigned int    ioaddr1;
 124         unsigned int    ioaddr2;
 125         unsigned int    iosize1;
 126         unsigned int    iosize2;
 127         unsigned int    iostatus;
 128         unsigned int    ioctrl;
 129         unsigned int    ioctrlval;
 130         unsigned int    hwid;
 131         unsigned long   clk;
 132         unsigned int    bnkpageaddr[STL_MAXBANKS];
 133         unsigned int    bnkstataddr[STL_MAXBANKS];
 134         struct stlpanel *bnk2panel[STL_MAXBANKS];
 135         struct stlpanel *panels[STL_MAXPANELS];
 136 };
 137
 138
 139 /*
 140  *      Define MAGIC numbers used for above structures.
 141  */
 142 #define STL_PORTMAGIC   0x5a7182c9
 143 #define STL_PANELMAGIC  0x7ef621a1
 144 #define STL_BOARDMAGIC  0xa2267f52
 145
 146 /*****************************************************************************/
 147 #endif