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 #include <linux/version.h>
  25
  26 /*****************************************************************************/
  27 #ifndef _STALLION_H
  28 #define _STALLION_H
  29 /*****************************************************************************/
  30
  31 /*
  32  *      Define important driver constants here.
  33  */
  34 #define STL_MAXBRDS             4
  35 #define STL_MAXPANELS           4
  36 #define STL_MAXBANKS            8
  37 #define STL_PORTSPERPANEL       16
  38 #define STL_MAXPORTS            64
  39 #define STL_MAXDEVS             (STL_MAXBRDS * STL_MAXPORTS)
  40
  41
  42 /*
  43  *      Define a set of structures to hold all the board/panel/port info
  44  *      for our ports. These will be dynamically allocated as required.
  45  */
  46
  47 /*
  48  *      Define a ring queue structure for each port. This will hold the
  49  *      TX data waiting to be output. Characters are fed into this buffer
  50  *      from the line discipline (or even direct from user space!) and
  51  *      then fed into the UARTs during interrupts. Will use a classic ring
  52  *      queue here for this. The good thing about this type of ring queue
  53  *      is that the head and tail pointers can be updated without interrupt
  54  *      protection - since "write" code only needs to change the head, and
  55  *      interrupt code only needs to change the tail.
  56  */
  57 typedef struct {
  58         char    *buf;
  59         char    *head;
  60         char    *tail;
  61 } stlrq_t;
  62
  63 /*
  64  *      Port, panel and board structures to hold status info about each.
  65  *      The board structure contains pointers to structures for each panel
  66  *      connected to it, and in turn each panel structure contains pointers
  67  *      for each port structure for each port on that panel. Note that
  68  *      the port structure also contains the board and panel number that it
  69  *      is associated with, this makes it (fairly) easy to get back to the
  70  *      board/panel info for a port.
  71  */
  72 typedef struct stlport {
  73         unsigned long           magic;
  74         int                     portnr;
  75         int                     panelnr;
  76         int                     brdnr;
  77         int                     ioaddr;
  78         int                     uartaddr;
  79         int                     pagenr;
  80         long                    istate;
  81         int                     flags;
  82         int                     baud_base;
  83         int                     custom_divisor;
  84         int                     close_delay;
  85         int                     closing_wait;
  86         int                     refcount;
  87         int                     openwaitcnt;
  88         int                     brklen;
  89         unsigned int            sigs;
  90         unsigned int            rxignoremsk;
  91         unsigned int            rxmarkmsk;
  92         unsigned int            imr;
  93         unsigned int            crenable;
  94         unsigned long           clk;
  95         unsigned long           hwid;
  96         void                    *uartp;
  97         struct tty_struct       *tty;
  98         wait_queue_head_t       open_wait;
  99         wait_queue_head_t       close_wait;
 100         struct work_struct      tqueue;
 101         comstats_t              stats;
 102         stlrq_t                 tx;
 103 } stlport_t;
 104
 105 typedef struct stlpanel {
 106         unsigned long   magic;
 107         int             panelnr;
 108         int             brdnr;
 109         int             pagenr;
 110         int             nrports;
 111         int             iobase;
 112         void            *uartp;
 113         void            (*isr)(struct stlpanel *panelp, unsigned int iobase);
 114         unsigned int    hwid;
 115         unsigned int    ackmask;
 116         stlport_t       *ports[STL_PORTSPERPANEL];
 117 } stlpanel_t;
 118
 119 typedef struct stlbrd {
 120         unsigned long   magic;
 121         int             brdnr;
 122         int             brdtype;
 123         int             state;
 124         int             nrpanels;
 125         int             nrports;
 126         int             nrbnks;
 127         int             irq;
 128         int             irqtype;
 129         int             (*isr)(struct stlbrd *brdp);
 130         unsigned int    ioaddr1;
 131         unsigned int    ioaddr2;
 132         unsigned int    iosize1;
 133         unsigned int    iosize2;
 134         unsigned int    iostatus;
 135         unsigned int    ioctrl;
 136         unsigned int    ioctrlval;
 137         unsigned int    hwid;
 138         unsigned long   clk;
 139         unsigned int    bnkpageaddr[STL_MAXBANKS];
 140         unsigned int    bnkstataddr[STL_MAXBANKS];
 141         stlpanel_t      *bnk2panel[STL_MAXBANKS];
 142         stlpanel_t      *panels[STL_MAXPANELS];
 143 } stlbrd_t;
 144
 145
 146 /*
 147  *      Define MAGIC numbers used for above structures.
 148  */
 149 #define STL_PORTMAGIC   0x5a7182c9
 150 #define STL_PANELMAGIC  0x7ef621a1
 151 #define STL_BOARDMAGIC  0xa2267f52
 152
 153 /*****************************************************************************/
 154 #endif