digi.h

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    1 /*-
    2  * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
    3  *   based on work by Slawa Olhovchenkov
    4  *                    John Prince <johnp@knight-trosoft.com>
    5  *                    Eric Hernes
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/8.4/sys/dev/digi/digi.h 136516 2004-10-14 18:37:59Z phk $
   30  */
   31 
   32 #define W(p)                            (*(u_int16_t *)(p))
   33 #define vW(p)                           (*(u_int16_t volatile *)(p))
   34 #define D(p)                            (*(u_int32_t *)(p))
   35 #define vD(p)                           (*(u_int32_t volatile *)(p))
   36 
   37 #define CE_OVERRUN                      0
   38 #define CE_INTERRUPT_BUF_OVERFLOW       1
   39 #define CE_TTY_BUF_OVERFLOW             2
   40 #define CE_NTYPES                       3
   41 #define CE_RECORD(com, errnum)          (++(com)->delta_error_counts[errnum])
   42 
   43 /*#define DIGI_INTERRUPT*/
   44 
   45 #ifndef DEBUG
   46 #define DEBUG
   47 #endif
   48 
   49 #ifdef DEBUG
   50 extern unsigned digi_debug;
   51 #define DLOG(level, args)       if (digi_debug & (level)) device_printf args
   52 #else
   53 #define DLOG(level, args)
   54 #endif
   55 
   56 
   57 struct digi_softc;
   58 
   59 /* digiboard port structure */
   60 struct digi_p {
   61         struct digi_softc *sc;
   62 
   63         int status;
   64 #define ENABLED 1
   65 #define DIGI_DTR_OFF 2
   66 #define PAUSE_TX 8
   67 #define PAUSE_RX 16
   68 
   69         int opencnt;
   70         u_short txbufsize;
   71         u_short rxbufsize;
   72         volatile struct board_chan *bc;
   73         struct tty *tp;
   74 
   75         u_char *txbuf;
   76         u_char *rxbuf;
   77         u_char txwin;
   78         u_char rxwin;
   79 
   80         u_char pnum;            /* port number */
   81 
   82         u_char modemfake;       /* Modem values to be forced */
   83         u_char mstat;
   84         u_char modem;           /* Force values */
   85 
   86         /*
   87          * The high level of the driver never reads status registers directly
   88          * because there would be too many side effects to handle conveniently.
   89          * Instead, it reads copies of the registers stored here by the
   90          * interrupt handler.
   91          */
   92         u_char last_modem_status;       /* last MSR read by intr handler */
   93         u_char prev_modem_status;       /* last MSR handled by high level */
   94 
   95         u_long bytes_in, bytes_out;
   96         u_int delta_error_counts[CE_NTYPES];
   97         u_long error_counts;
   98 
   99         tcflag_t c_iflag;               /* hold true IXON/IXOFF/IXANY */
  100         int lcc, lostcc, lbuf;
  101         u_char send_ring;
  102 
  103         unsigned laltpin : 1;           /* Alternate pin settings locked */
  104         unsigned ialtpin : 1;           /* Initial alternate pin settings */
  105 
  106         int cd;                         /* Depends on the altpin setting */
  107         int dsr;
  108 };
  109 
  110 /*
  111  * Map TIOCM_* values to digiboard values
  112  */
  113 struct digi_control_signals {
  114         int rts;
  115         int cd;
  116         int dsr;
  117         int cts;
  118         int ri;
  119         int dtr;
  120 };
  121 
  122 enum digi_board_status {
  123         DIGI_STATUS_NOTINIT,
  124         DIGI_STATUS_ENABLED,
  125         DIGI_STATUS_DISABLED
  126 };
  127 
  128 /* Digiboard per-board structure */
  129 struct digi_softc {
  130         /* struct board_info */
  131         device_t dev;
  132 
  133         const char *name;
  134         enum digi_board_status status;
  135         u_short numports;               /* number of ports on card */
  136         u_int port;                     /* I/O port */
  137         u_int wport;                    /* window select I/O port */
  138 
  139         struct {
  140                 struct resource *mem;
  141                 int mrid;
  142                 struct resource *irq;
  143                 int irqrid;
  144                 struct resource *io;
  145                 int iorid;
  146                 void *irqHandler;
  147                 int unit;
  148                 struct cdev *ctldev;
  149         } res;
  150 
  151         u_char *vmem;                   /* virtual memory address */
  152         u_char *memcmd;
  153         volatile u_char *memevent;
  154         long pmem;                      /* physical memory address */
  155 
  156         struct {
  157                 u_char *data;
  158                 size_t size;
  159         } bios, fep, link;
  160 
  161 #ifdef DIGI_INTERRUPT
  162         struct timeval intr_timestamp;
  163 #endif
  164 
  165         struct digi_p *ports;   /* pointer to array of port descriptors */
  166         volatile struct global_data *gdata;
  167         u_char window;          /* saved window */
  168         int win_size;
  169         int win_bits;
  170         int mem_size;
  171         int mem_seg;
  172         enum digi_model model;
  173         const struct digi_control_signals *csigs;
  174         int opencnt;
  175         unsigned pcibus : 1;            /* On a PCI bus ? */
  176 
  177         struct callout_handle callout;  /* poll timeout handle */
  178         struct callout_handle inttest;  /* int test timeout handle */
  179         const char *module;
  180         
  181         u_char *(*setwin)(struct digi_softc *_sc, unsigned _addr);
  182         void    (*hidewin)(struct digi_softc *_sc);
  183         void    (*towin)(struct digi_softc *_sc, int _win);
  184 #ifdef DEBUG
  185         int     intr_count;
  186 #endif
  187 };
  188 
  189 extern devclass_t digi_devclass;
  190 
  191 extern const struct digi_control_signals digi_xixe_signals;
  192 extern const struct digi_control_signals digi_normal_signals;
  193 
  194 const char      *digi_errortxt(int _id);
  195 int              digi_attach(struct digi_softc *);
  196 int              digi_detach(device_t _dev);
  197 int              digi_shutdown(device_t _dev);
  198 void             digi_delay(struct digi_softc *_sc, const char *_txt,
  199                      u_long _timo);

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FreeBSD/Linux Kernel Cross Reference sys/dev/digi/digi.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/digi/digi.h