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   1 /*****************************************************************************
   2 * wanpipe.h     WANPIPE(tm) Multiprotocol WAN Link Driver.
   3 *               User-level API definitions.
   4 *
   5 * Author:       Nenad Corbic <ncorbic@sangoma.com>
   6 *               Gideon Hack
   7 *
   8 * Copyright:    (c) 1995-2000 Sangoma Technologies Inc.
   9 *
  10 *               This program is free software; you can redistribute it and/or
  11 *               modify it under the terms of the GNU General Public License
  12 *               as published by the Free Software Foundation; either version
  13 *               2 of the License, or (at your option) any later version.
  14 * ============================================================================
  15 * Nov 3,  2000  Nenad Corbic    Added config_id to sdla_t structure.
  16 *                               Used to determine the protocol running.
  17 * Jul 13, 2000  Nenad Corbic    Added SyncPPP Support
  18 * Feb 24, 2000  Nenad Corbic    Added support for x25api driver
  19 * Oct 04, 1999  Nenad Corbic    New CHDLC and FRAME RELAY code, SMP support
  20 * Jun 02, 1999  Gideon Hack     Added 'update_call_count' for Cisco HDLC
  21 *                               support
  22 * Jun 26, 1998  David Fong      Added 'ip_mode' in sdla_t.u.p for dynamic IP
  23 *                               routing mode configuration
  24 * Jun 12, 1998  David Fong      Added Cisco HDLC union member in sdla_t
  25 * Dec 08, 1997  Jaspreet Singh  Added 'authenticator' in union of 'sdla_t'
  26 * Nov 26, 1997  Jaspreet Singh  Added 'load_sharing' structure.  Also added
  27 *                               'devs_struct','dev_to_devtint_next' to 'sdla_t'
  28 * Nov 24, 1997  Jaspreet Singh  Added 'irq_dis_if_send_count',
  29 *                               'irq_dis_poll_count' to 'sdla_t'.
  30 * Nov 06, 1997  Jaspreet Singh  Added a define called 'INTR_TEST_MODE'
  31 * Oct 20, 1997  Jaspreet Singh  Added 'buff_intr_mode_unbusy' and
  32 *                               'dlci_intr_mode_unbusy' to 'sdla_t'
  33 * Oct 18, 1997  Jaspreet Singh  Added structure to maintain global driver
  34 *                               statistics.
  35 * Jan 15, 1997  Gene Kozin      Version 3.1.0
  36 *                                o added UDP management stuff
  37 * Jan 02, 1997  Gene Kozin      Version 3.0.0
  38 *****************************************************************************/
  39 #ifndef _WANPIPE_H
  40 #define _WANPIPE_H
  41
  42 #include <linux/wanrouter.h>
  43
  44 /* Defines */
  45
  46 #ifndef PACKED
  47 #define PACKED  __attribute__((packed))
  48 #endif
  49
  50 #define WANPIPE_MAGIC   0x414C4453L     /* signature: 'SDLA' reversed */
  51
  52 /* IOCTL numbers (up to 16) */
  53 #define WANPIPE_DUMP    (ROUTER_USER+0) /* dump adapter's memory */
  54 #define WANPIPE_EXEC    (ROUTER_USER+1) /* execute firmware command */
  55
  56 #define TRACE_ALL                       0x00
  57 #define TRACE_PROT                      0x01
  58 #define TRACE_DATA                      0x02
  59
  60 /* values for request/reply byte */
  61 #define UDPMGMT_REQUEST 0x01
  62 #define UDPMGMT_REPLY   0x02
  63 #define UDP_OFFSET      12
  64
  65 #define MAX_CMD_BUFF    10
  66 #define MAX_X25_LCN     255     /* Maximum number of x25 channels */
  67 #define MAX_LCN_NUM     4095    /* Maximum lcn number */
  68 #define MAX_FT1_RETRY   100
  69
  70 #ifndef AF_WANPIPE
  71         #define AF_WANPIPE 25
  72         #ifndef PF_WANPIPE
  73                 #define PF_WANPIPE AF_WANPIPE
  74         #endif
  75 #endif
  76
  77
  78 #define TX_TIMEOUT 5*HZ
  79
  80 /* General Critical Flags */
  81 #define SEND_CRIT       0x00
  82 #define PERI_CRIT       0x01
  83
  84 /* Chdlc and PPP polling critical flag */
  85 #define POLL_CRIT       0x03
  86
  87 /* Frame Relay Tx IRQ send critical flag */
  88 #define SEND_TXIRQ_CRIT 0x02
  89
  90 /* Frame Relay ARP critical flag */
  91 #define ARP_CRIT        0x03
  92
  93 /* Bit maps for dynamic interface configuration
  94  * DYN_OPT_ON : turns this option on/off
  95  * DEV_DOWN   : device was shutdown by the driver not
  96  *              by user
  97  */
  98 #define DYN_OPT_ON      0x00
  99 #define DEV_DOWN        0x01
 100
 101 /*
 102  * Data structures for IOCTL calls.
 103  */
 104
 105 typedef struct sdla_dump        /* WANPIPE_DUMP */
 106 {
 107         unsigned long magic;    /* for verification */
 108         unsigned long offset;   /* absolute adapter memory address */
 109         unsigned long length;   /* block length */
 110         void* ptr;              /* -> buffer */
 111 } sdla_dump_t;
 112
 113 typedef struct sdla_exec        /* WANPIPE_EXEC */
 114 {
 115         unsigned long magic;    /* for verification */
 116         void* cmd;              /* -> command structure */
 117         void* data;             /* -> data buffer */
 118 } sdla_exec_t;
 119
 120 /* UDP management stuff */
 121
 122 typedef struct wum_header
 123 {
 124         unsigned char signature[8];     /* 00h: signature */
 125         unsigned char type;             /* 08h: request/reply */
 126         unsigned char command;          /* 09h: commnand */
 127         unsigned char reserved[6];      /* 0Ah: reserved */
 128 } wum_header_t;
 129
 130 /*************************************************************************
 131  Data Structure for global statistics
 132 *************************************************************************/
 133
 134 typedef struct global_stats
 135 {
 136         unsigned long isr_entry;
 137         unsigned long isr_already_critical;
 138         unsigned long isr_rx;
 139         unsigned long isr_tx;
 140         unsigned long isr_intr_test;
 141         unsigned long isr_spurious;
 142         unsigned long isr_enable_tx_int;
 143         unsigned long rx_intr_corrupt_rx_bfr;
 144         unsigned long rx_intr_on_orphaned_DLCI;
 145         unsigned long rx_intr_dev_not_started;
 146         unsigned long tx_intr_dev_not_started;
 147         unsigned long poll_entry;
 148         unsigned long poll_already_critical;
 149         unsigned long poll_processed;
 150         unsigned long poll_tbusy_bad_status;
 151         unsigned long poll_host_disable_irq;
 152         unsigned long poll_host_enable_irq;
 153
 154 } global_stats_t;
 155
 156
 157 typedef struct{
 158         unsigned short  udp_src_port            PACKED;
 159         unsigned short  udp_dst_port            PACKED;
 160         unsigned short  udp_length              PACKED;
 161         unsigned short  udp_checksum            PACKED;
 162 } udp_pkt_t;
 163
 164
 165 typedef struct {
 166         unsigned char   ver_inet_hdr_length     PACKED;
 167         unsigned char   service_type            PACKED;
 168         unsigned short  total_length            PACKED;
 169         unsigned short  identifier              PACKED;
 170         unsigned short  flags_frag_offset       PACKED;
 171         unsigned char   ttl                     PACKED;
 172         unsigned char   protocol                PACKED;
 173         unsigned short  hdr_checksum            PACKED;
 174         unsigned long   ip_src_address          PACKED;
 175         unsigned long   ip_dst_address          PACKED;
 176 } ip_pkt_t;
 177
 178
 179 typedef struct {
 180         unsigned char           signature[8]    PACKED;
 181         unsigned char           request_reply   PACKED;
 182         unsigned char           id              PACKED;
 183         unsigned char           reserved[6]     PACKED;
 184 } wp_mgmt_t;
 185
 186 /*************************************************************************
 187  Data Structure for if_send  statistics
 188 *************************************************************************/
 189 typedef struct if_send_stat{
 190         unsigned long if_send_entry;
 191         unsigned long if_send_skb_null;
 192         unsigned long if_send_broadcast;
 193         unsigned long if_send_multicast;
 194         unsigned long if_send_critical_ISR;
 195         unsigned long if_send_critical_non_ISR;
 196         unsigned long if_send_tbusy;
 197         unsigned long if_send_tbusy_timeout;
 198         unsigned long if_send_PIPE_request;
 199         unsigned long if_send_wan_disconnected;
 200         unsigned long if_send_dlci_disconnected;
 201         unsigned long if_send_no_bfrs;
 202         unsigned long if_send_adptr_bfrs_full;
 203         unsigned long if_send_bfr_passed_to_adptr;
 204         unsigned long if_send_protocol_error;
 205         unsigned long if_send_bfr_not_passed_to_adptr;
 206         unsigned long if_send_tx_int_enabled;
 207         unsigned long if_send_consec_send_fail;
 208 } if_send_stat_t;
 209
 210 typedef struct rx_intr_stat{
 211         unsigned long rx_intr_no_socket;
 212         unsigned long rx_intr_dev_not_started;
 213         unsigned long rx_intr_PIPE_request;
 214         unsigned long rx_intr_bfr_not_passed_to_stack;
 215         unsigned long rx_intr_bfr_passed_to_stack;
 216 } rx_intr_stat_t;
 217
 218 typedef struct pipe_mgmt_stat{
 219         unsigned long UDP_PIPE_mgmt_kmalloc_err;
 220         unsigned long UDP_PIPE_mgmt_direction_err;
 221         unsigned long UDP_PIPE_mgmt_adptr_type_err;
 222         unsigned long UDP_PIPE_mgmt_adptr_cmnd_OK;
 223         unsigned long UDP_PIPE_mgmt_adptr_cmnd_timeout;
 224         unsigned long UDP_PIPE_mgmt_adptr_send_passed;
 225         unsigned long UDP_PIPE_mgmt_adptr_send_failed;
 226         unsigned long UDP_PIPE_mgmt_not_passed_to_stack;
 227         unsigned long UDP_PIPE_mgmt_passed_to_stack;
 228         unsigned long UDP_PIPE_mgmt_no_socket;
 229         unsigned long UDP_PIPE_mgmt_passed_to_adptr;
 230 } pipe_mgmt_stat_t;
 231
 232
 233 typedef struct {
 234         struct sk_buff *skb;
 235 } bh_data_t, cmd_data_t;
 236
 237 #define MAX_LGTH_UDP_MGNT_PKT 2000
 238
 239
 240 /* This is used for interrupt testing */
 241 #define INTR_TEST_MODE  0x02
 242
 243 #define WUM_SIGNATURE_L 0x50495046
 244 #define WUM_SIGNATURE_H 0x444E3845
 245
 246 #define WUM_KILL        0x50
 247 #define WUM_EXEC        0x51
 248
 249 #define WANPIPE         0x00
 250 #define API             0x01
 251 #define BRIDGE          0x02
 252 #define BRIDGE_NODE     0x03
 253
 254 #ifdef  __KERNEL__
 255 /****** Kernel Interface ****************************************************/
 256
 257 #include <linux/sdladrv.h>      /* SDLA support module API definitions */
 258 #include <linux/sdlasfm.h>      /* SDLA firmware module definitions */
 259 #include <linux/workqueue.h>
 260 #include <linux/serial.h>
 261 #include <linux/serialP.h>
 262 #include <linux/serial_reg.h>
 263 #include <asm/serial.h>
 264 #include <linux/tty.h>
 265 #include <linux/tty_driver.h>
 266 #include <linux/tty_flip.h>
 267
 268 /****** Data Structures *****************************************************/
 269
 270 /* Adapter Data Space.
 271  * This structure is needed because we handle multiple cards, otherwise
 272  * static data would do it.
 273  */
 274 typedef struct sdla
 275 {
 276         char devname[WAN_DRVNAME_SZ+1]; /* card name */
 277         sdlahw_t hw;                    /* hardware configuration */
 278         struct wan_device wandev;       /* WAN device data space */
 279
 280         unsigned open_cnt;              /* number of open interfaces */
 281         unsigned long state_tick;       /* link state timestamp */
 282         unsigned intr_mode;             /* Type of Interrupt Mode */
 283         char in_isr;                    /* interrupt-in-service flag */
 284         char buff_int_mode_unbusy;      /* flag for carrying out dev_tint */
 285         char dlci_int_mode_unbusy;      /* flag for carrying out dev_tint */
 286         long configured;                /* flag for previous configurations */
 287
 288         unsigned short irq_dis_if_send_count; /* Disabling irqs in if_send*/
 289         unsigned short irq_dis_poll_count;   /* Disabling irqs in poll routine*/
 290         unsigned short force_enable_irq;
 291         char TracingEnabled;            /* flag for enabling trace */
 292         global_stats_t statistics;      /* global statistics */
 293         void* mbox;                     /* -> mailbox */
 294         void* rxmb;                     /* -> receive mailbox */
 295         void* flags;                    /* -> adapter status flags */
 296         void (*isr)(struct sdla* card); /* interrupt service routine */
 297         void (*poll)(struct sdla* card); /* polling routine */
 298         int (*exec)(struct sdla* card, void* u_cmd, void* u_data);
 299                                         /* Used by the listen() system call */
 300         /* Wanpipe Socket Interface */
 301         int   (*func) (struct sk_buff *, struct sock *);
 302         struct sock *sk;
 303
 304         /* Shutdown function */
 305         void (*disable_comm) (struct sdla *card);
 306
 307         /* Secondary Port Device: Piggibacking */
 308         struct sdla *next;
 309
 310         /* TTY driver variables */
 311         unsigned char tty_opt;
 312         struct tty_struct *tty;
 313         unsigned int tty_minor;
 314         unsigned int tty_open;
 315         unsigned char *tty_buf;
 316         unsigned char *tty_rx;
 317         struct work_struct tty_work;
 318
 319         union
 320         {
 321                 struct
 322                 {                       /****** X.25 specific data **********/
 323                         u32 lo_pvc;
 324                         u32 hi_pvc;
 325                         u32 lo_svc;
 326                         u32 hi_svc;
 327                         struct net_device *svc_to_dev_map[MAX_X25_LCN];
 328                         struct net_device *pvc_to_dev_map[MAX_X25_LCN];
 329                         struct net_device *tx_dev;
 330                         struct net_device *cmd_dev;
 331                         u32 no_dev;
 332                         volatile u8 *hdlc_buf_status;
 333                         u32 tx_interrupts_pending;
 334                         u16 timer_int_enabled;
 335                         struct net_device *poll_device;
 336                         atomic_t command_busy;
 337
 338                         u16 udp_pkt_lgth;
 339                         u32 udp_type;
 340                         u8  udp_pkt_src;
 341                         u32 udp_lcn;
 342                         struct net_device *udp_dev;
 343                         s8 udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
 344
 345                         u8 LAPB_hdlc;           /* Option to turn off X25 and run only LAPB */
 346                         u8 logging;             /* Option to log call messages */
 347                         u8 oob_on_modem;        /* Option to send modem status to the api */
 348                         u16 num_of_ch;          /* Number of channels configured by the user */
 349
 350                         struct work_struct x25_poll_work;
 351                         struct timer_list x25_timer;
 352                 } x;
 353                 struct
 354                 {                       /****** frame relay specific data ***/
 355                         void* rxmb_base;        /* -> first Rx buffer */
 356                         void* rxmb_last;        /* -> last Rx buffer */
 357                         unsigned rx_base;       /* S508 receive buffer base */
 358                         unsigned rx_top;        /* S508 receive buffer end */
 359                         unsigned short node_dlci[100];
 360                         unsigned short dlci_num;
 361                         struct net_device *dlci_to_dev_map[991 + 1];
 362                         unsigned tx_interrupts_pending;
 363                         unsigned short timer_int_enabled;
 364                         unsigned short udp_pkt_lgth;
 365                         int udp_type;
 366                         char udp_pkt_src;
 367                         unsigned udp_dlci;
 368                         char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
 369                         void* trc_el_base;                      /* first trace element */
 370                         void* trc_el_last;                      /* last trace element */
 371                         void *curr_trc_el;                      /* current trace element */
 372                         unsigned short trc_bfr_space;           /* trace buffer space */
 373                         unsigned char  update_comms_stats;
 374                         struct net_device *arp_dev;
 375                         spinlock_t if_send_lock;
 376                 } f;
 377                 struct                  /****** PPP-specific data ***********/
 378                 {
 379                         char if_name[WAN_IFNAME_SZ+1];  /* interface name */
 380                         void* txbuf;            /* -> current Tx buffer */
 381                         void* txbuf_base;       /* -> first Tx buffer */
 382                         void* txbuf_last;       /* -> last Tx buffer */
 383                         void* rxbuf_base;       /* -> first Rx buffer */
 384                         void* rxbuf_last;       /* -> last Rx buffer */
 385                         unsigned rx_base;       /* S508 receive buffer base */
 386                         unsigned rx_top;        /* S508 receive buffer end */
 387                         char ip_mode;           /* STATIC/HOST/PEER IP Mode */
 388                         char authenticator;     /* Authenticator for PAP/CHAP */
 389                         unsigned char comm_enabled; /* Is comm enabled or not */
 390                         unsigned char peer_route;   /* Process Peer Route */
 391                         unsigned long *txbuf_next;  /* Next Tx buffer to use */
 392                         unsigned long *rxbuf_next;  /* Next Rx buffer to use */
 393                 } p;
 394                 struct                  /* Cisco HDLC-specific data */
 395                 {
 396                         char if_name[WAN_IFNAME_SZ+1];  /* interface name */
 397                         unsigned char comm_port;/* Communication Port O or 1 */
 398                         unsigned char usedby;  /* Used by WANPIPE or API */
 399                         void* rxmb;             /* Receive mail box */
 400                         void* flags;            /* flags */
 401                         void* tx_status;        /* Tx status element */
 402                         void* rx_status;        /* Rx status element */
 403                         void* txbuf;            /* -> current Tx buffer */
 404                         void* txbuf_base;       /* -> first Tx buffer */
 405                         void* txbuf_last;       /* -> last Tx buffer */
 406                         void* rxbuf_base;       /* -> first Rx buffer */
 407                         void* rxbuf_last;       /* -> last Rx buffer */
 408                         unsigned rx_base;       /* S508 receive buffer base */
 409                         unsigned rx_top;        /* S508 receive buffer end */
 410                         unsigned char receive_only; /* high speed receivers */
 411                         unsigned short protocol_options;
 412                         unsigned short kpalv_tx;        /* Tx kpalv timer */
 413                         unsigned short kpalv_rx;        /* Rx kpalv timer */
 414                         unsigned short kpalv_err;       /* Error tolerance */
 415                         unsigned short slarp_timer;     /* SLARP req timer */
 416                         unsigned state;                 /* state of the link */
 417                         unsigned char api_status;
 418                         unsigned char update_call_count;
 419                         unsigned short api_options;     /* for async config */
 420                         unsigned char  async_mode;
 421                         unsigned short tx_bits_per_char;
 422                         unsigned short rx_bits_per_char;
 423                         unsigned short stop_bits;
 424                         unsigned short parity;
 425                         unsigned short break_timer;
 426                         unsigned short inter_char_timer;
 427                         unsigned short rx_complete_length;
 428                         unsigned short xon_char;
 429                         unsigned short xoff_char;
 430                         unsigned char comm_enabled; /* Is comm enabled or not */
 431                         unsigned char backup;
 432                 } c;
 433                 struct
 434                 {
 435                         void* tx_status;        /* Tx status element */
 436                         void* rx_status;        /* Rx status element */
 437                         void* trace_status;     /* Trace status element */
 438                         void* txbuf;            /* -> current Tx buffer */
 439                         void* txbuf_base;       /* -> first Tx buffer */
 440                         void* txbuf_last;       /* -> last Tx buffer */
 441                         void* rxbuf_base;       /* -> first Rx buffer */
 442                         void* rxbuf_last;       /* -> last Rx buffer */
 443                         void* tracebuf;         /* -> current Trace buffer */
 444                         void* tracebuf_base;    /* -> current Trace buffer */
 445                         void* tracebuf_last;    /* -> current Trace buffer */
 446                         unsigned rx_base;       /* receive buffer base */
 447                         unsigned rx_end;        /* receive buffer end */
 448                         unsigned trace_base;    /* trace buffer base */
 449                         unsigned trace_end;     /* trace buffer end */
 450
 451                 } h;
 452         } u;
 453 } sdla_t;
 454
 455 /****** Public Functions ****************************************************/
 456
 457 void wanpipe_open      (sdla_t* card);                  /* wpmain.c */
 458 void wanpipe_close     (sdla_t* card);                  /* wpmain.c */
 459 void wanpipe_set_state (sdla_t* card, int state);       /* wpmain.c */
 460
 461 int wpx_init (sdla_t* card, wandev_conf_t* conf);       /* wpx.c */
 462 int wpf_init (sdla_t* card, wandev_conf_t* conf);       /* wpf.c */
 463 int wpp_init (sdla_t* card, wandev_conf_t* conf);       /* wpp.c */
 464 int wpc_init (sdla_t* card, wandev_conf_t* conf); /* Cisco HDLC */
 465 int bsc_init (sdla_t* card, wandev_conf_t* conf);       /* BSC streaming */
 466 int hdlc_init(sdla_t* card, wandev_conf_t* conf);       /* HDLC support */
 467 int wpft1_init (sdla_t* card, wandev_conf_t* conf);     /* FT1 Config support */
 468 int wsppp_init (sdla_t* card, wandev_conf_t* conf);     /* Sync PPP on top of RAW CHDLC */
 469
 470 extern sdla_t * wanpipe_find_card(char *);
 471 extern sdla_t * wanpipe_find_card_num (int);
 472
 473 extern void wanpipe_queue_work (struct work_struct *);
 474 extern void wanpipe_mark_bh (void);
 475 extern void wakeup_sk_bh(struct net_device *dev);
 476 extern int change_dev_flags(struct net_device *dev, unsigned flags);
 477 extern unsigned long get_ip_address(struct net_device *dev, int option);
 478 extern void add_gateway(sdla_t *card, struct net_device *dev);
 479
 480
 481 #endif  /* __KERNEL__ */
 482 #endif  /* _WANPIPE_H */
 483