drivers/net/wan/comx.h

   1 /*
   2  * General definitions for the COMX driver
   3  *
   4  * Original authors:  Arpad Bakay <bakay.arpad@synergon.hu>,
   5  *                    Peter Bajan <bajan.peter@synergon.hu>,
   6  * Previous maintainer: Tivadar Szemethy <tiv@itc.hu>
   7  * Currently maintained by: Gergely Madarasz <gorgo@itc.hu>
   8  *
   9  * Copyright (C) 1995-1999 ITConsult-Pro Co. <info@itc.hu>
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version
  14  * 2 of the License, or (at your option) any later version.
  15  *
  16  *
  17  * net_device_stats:
  18  *      rx_length_errors        rec_len < 4 || rec_len > 2000
  19  *      rx_over_errors          receive overrun (OVR)
  20  *      rx_crc_errors           rx crc error
  21  *      rx_frame_errors         aborts rec'd (ABO)
  22  *      rx_fifo_errors          status fifo overrun (PBUFOVR)
  23  *      rx_missed_errors        receive buffer overrun (BUFOVR)
  24  *      tx_aborted_errors       ?
  25  *      tx_carrier_errors       modem line status changes
  26  *      tx_fifo_errors          tx underrun (locomx)
  27  */
  28 #include <linux/config.h>
  29
  30 struct comx_protocol {
  31         char    *name;
  32         char    *version;
  33         unsigned short encap_type;
  34         int     (*line_init)(struct net_device *dev);
  35         int     (*line_exit)(struct net_device *dev);
  36         struct comx_protocol *next;
  37         };
  38
  39 struct comx_hardware {
  40         char *name;
  41         char *version;
  42         int     (*hw_init)(struct net_device *dev);
  43         int     (*hw_exit)(struct net_device *dev);
  44         int     (*hw_dump)(struct net_device *dev);
  45         struct comx_hardware *next;
  46         };
  47
  48 struct comx_channel {
  49         void            *if_ptr;        // General purpose pointer
  50         struct net_device       *dev;           // Where we belong to
  51         struct net_device       *twin;          // On dual-port cards
  52         struct proc_dir_entry *procdir; // the directory
  53
  54         unsigned char   init_status;
  55         unsigned char   line_status;
  56
  57         struct timer_list lineup_timer; // against line jitter
  58         long int        lineup_pending;
  59         unsigned char   lineup_delay;
  60
  61 #if 0
  62         struct timer_list reset_timer; // for board resetting
  63         long            reset_pending;
  64         int             reset_timeout;
  65 #endif
  66
  67         struct net_device_stats stats;
  68         struct net_device_stats *current_stats;
  69 #if 0
  70         unsigned long   board_resets;
  71 #endif
  72         unsigned long   *avg_bytes;
  73         int             loadavg_counter, loadavg_size;
  74         int             loadavg[3];
  75         struct timer_list loadavg_timer;
  76         int             debug_flags;
  77         char            *debug_area;
  78         int             debug_start, debug_end, debug_size;
  79         struct proc_dir_entry *debug_file;
  80 #ifdef  CONFIG_COMX_DEBUG_RAW
  81         char            *raw;
  82         int             raw_len;
  83 #endif
  84         // LINE specific
  85         struct comx_protocol *protocol;
  86         void            (*LINE_rx)(struct net_device *dev, struct sk_buff *skb);
  87         int             (*LINE_tx)(struct net_device *dev);
  88         void            (*LINE_status)(struct net_device *dev, u_short status);
  89         int             (*LINE_open)(struct net_device *dev);
  90         int             (*LINE_close)(struct net_device *dev);
  91         int             (*LINE_xmit)(struct sk_buff *skb, struct net_device *dev);
  92         int             (*LINE_header)(struct sk_buff *skb, struct net_device *dev,
  93                                 u_short type,void *daddr, void *saddr,
  94                                 unsigned len);
  95         int             (*LINE_rebuild_header)(struct sk_buff *skb);
  96         int             (*LINE_statistics)(struct net_device *dev, char *page);
  97         int             (*LINE_parameter_check)(struct net_device *dev);
  98         int             (*LINE_ioctl)(struct net_device *dev, struct ifreq *ifr,
  99                                 int cmd);
 100         void            (*LINE_mod_use)(int);
 101         void *          LINE_privdata;
 102
 103         // HW specific
 104
 105         struct comx_hardware *hardware;
 106         void    (*HW_board_on)(struct net_device *dev);
 107         void    (*HW_board_off)(struct net_device *dev);
 108         struct net_device *(*HW_access_board)(struct net_device *dev);
 109         void    (*HW_release_board)(struct net_device *dev, struct net_device *savep);
 110         int     (*HW_txe)(struct net_device *dev);
 111         int     (*HW_open)(struct net_device *dev);
 112         int     (*HW_close)(struct net_device *dev);
 113         int     (*HW_send_packet)(struct net_device *dev,struct sk_buff *skb);
 114         int     (*HW_statistics)(struct net_device *dev, char *page);
 115 #if 0
 116         int     (*HW_reset)(struct net_device *dev, char *page);
 117 #endif
 118         int     (*HW_load_board)(struct net_device *dev);
 119         void    (*HW_set_clock)(struct net_device *dev);
 120         void    *HW_privdata;
 121         };
 122
 123 struct comx_debugflags_struct {
 124         char *name;
 125         int  value;
 126         };
 127
 128 #define COMX_ROOT_DIR_NAME      "comx"
 129
 130 #define FILENAME_HARDWARE       "boardtype"
 131 #define FILENAME_HARDWARELIST   "boardtypes"
 132 #define FILENAME_PROTOCOL       "protocol"
 133 #define FILENAME_PROTOCOLLIST   "protocols"
 134 #define FILENAME_DEBUG          "debug"
 135 #define FILENAME_CLOCK          "clock"
 136 #define FILENAME_STATUS         "status"
 137 #define FILENAME_IO             "io"
 138 #define FILENAME_IRQ            "irq"
 139 #define FILENAME_KEEPALIVE      "keepalive"
 140 #define FILENAME_LINEUPDELAY    "lineup_delay"
 141 #define FILENAME_CHANNEL        "channel"
 142 #define FILENAME_FIRMWARE       "firmware"
 143 #define FILENAME_MEMADDR        "memaddr"
 144 #define FILENAME_TWIN           "twin"
 145 #define FILENAME_T1             "t1"
 146 #define FILENAME_T2             "t2"
 147 #define FILENAME_N2             "n2"
 148 #define FILENAME_WINDOW         "window"
 149 #define FILENAME_MODE           "mode"
 150 #define FILENAME_DLCI           "dlci"
 151 #define FILENAME_MASTER         "master"
 152 #ifdef  CONFIG_COMX_DEBUG_RAW
 153 #define FILENAME_RAW            "raw"
 154 #endif
 155
 156 #define PROTONAME_NONE          "none"
 157 #define HWNAME_NONE             "none"
 158 #define KEEPALIVE_OFF           "off"
 159
 160 #define FRAME_ACCEPTED          0               /* sending and xmitter busy */
 161 #define FRAME_DROPPED           1
 162 #define FRAME_ERROR             2               /* xmitter error */
 163 #define FRAME_QUEUED            3               /* sending but more can come */
 164
 165 #define LINE_UP                 1               /* Modem UP */
 166 #define PROTO_UP                2
 167 #define PROTO_LOOP              4
 168
 169 #define HW_OPEN                 1
 170 #define LINE_OPEN               2
 171 #define FW_LOADED               4
 172 #define IRQ_ALLOCATED           8
 173
 174 #define DEBUG_COMX_RX           2
 175 #define DEBUG_COMX_TX           4
 176 #define DEBUG_HW_TX             16
 177 #define DEBUG_HW_RX             32
 178 #define DEBUG_HDLC_KEEPALIVE    64
 179 #define DEBUG_COMX_PPP          128
 180 #define DEBUG_COMX_LAPB         256
 181 #define DEBUG_COMX_DLCI         512
 182
 183 #define DEBUG_PAGESIZE          3072
 184 #define DEFAULT_DEBUG_SIZE      4096
 185 #define DEFAULT_LINEUP_DELAY    1
 186 #define FILE_PAGESIZE           3072
 187
 188 #ifndef COMX_PPP_MAJOR
 189 #define COMX_PPP_MAJOR          88
 190 #endif
 191
 192
 193 #ifndef min
 194 #define min(a,b)                ((a) > (b) ? (b) : (a))
 195 #endif
 196 #ifndef max
 197 #define max(a,b)                ((a) > (b) ? (a) : (b))
 198 #endif
 199
 200
 201 #define COMX_CHANNEL(dev) ((struct comx_channel*)dev->priv)
 202
 203 #define TWIN(dev) (COMX_CHANNEL(dev)->twin)
 204
 205
 206 #ifndef byte
 207 typedef u8      byte;
 208 #endif
 209 #ifndef word
 210 typedef u16     word;
 211 #endif
 212
 213 #ifndef SEEK_SET
 214 #define SEEK_SET        0
 215 #endif
 216 #ifndef SEEK_CUR
 217 #define SEEK_CUR        1
 218 #endif
 219 #ifndef SEEK_END
 220 #define SEEK_END        2
 221 #endif
 222
 223 extern struct proc_dir_entry * comx_root_dir;
 224
 225 extern int      comx_register_hardware(struct comx_hardware *comx_hw);
 226 extern int      comx_unregister_hardware(char *name);
 227 extern int      comx_register_protocol(struct comx_protocol *comx_line);
 228 extern int      comx_unregister_protocol(char *name);
 229
 230 extern int      comx_rx(struct net_device *dev, struct sk_buff *skb);
 231 extern void     comx_status(struct net_device *dev, int status);
 232 extern void     comx_lineup_func(unsigned long d);
 233
 234 extern int      comx_debug(struct net_device *dev, char *fmt, ...);
 235 extern int      comx_debug_skb(struct net_device *dev, struct sk_buff *skb, char *msg);
 236 extern int      comx_debug_bytes(struct net_device *dev, unsigned char *bytes, int len,
 237                 char *msg);
 238 extern int      comx_strcasecmp(const char *cs, const char *ct);
 239
 240 extern struct inode_operations comx_normal_inode_ops;