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pcbit.h

/*
 * PCBIT-D device driver definitions
 *
 * Copyright (C) 1996 Universidade de Lisboa
 * 
 * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
 *
 * This software may be used and distributed according to the terms of 
 * the GNU General Public License, incorporated herein by reference.
 */

#ifndef PCBIT_H
#define PCBIT_H

#include <linux/workqueue.h>

#define MAX_PCBIT_CARDS 4


#define BLOCK_TIMER

#ifdef __KERNEL__

struct pcbit_chan {
      unsigned short id;
      unsigned short callref;                   /* Call Reference */
      unsigned char  proto;                     /* layer2protocol  */
      unsigned char  queued;                    /* unacked data messages */
      unsigned char  layer2link;                /* used in TData */
      unsigned char  snum;                      /* used in TData */
      unsigned short s_refnum;
      unsigned short r_refnum;
      unsigned short fsm_state;
      struct timer_list fsm_timer;
#ifdef  BLOCK_TIMER
      struct timer_list block_timer;
#endif
};

struct msn_entry {
      char *msn;
      struct msn_entry * next;
};

struct pcbit_dev {
      /* board */

      volatile unsigned char __iomem *sh_mem;         /* RDP address    */
      unsigned long ph_mem;
      unsigned int irq;
      unsigned int id;
      unsigned int interrupt;             /* set during interrupt 
                                       processing */
      spinlock_t lock;
      /* isdn4linux */

      struct msn_entry * msn_list;        /* ISDN address list */
      
      isdn_if * dev_if;
      
      ushort ll_hdrlen;
      ushort hl_hdrlen;

      /* link layer */
      unsigned char l2_state;

      struct frame_buf *read_queue;
      struct frame_buf *read_frame;
      struct frame_buf *write_queue;

      /* Protocol start */
      wait_queue_head_t set_running_wq;
      struct timer_list set_running_timer;

      struct timer_list error_recover_timer;

      struct work_struct qdelivery;

      u_char w_busy;
      u_char r_busy;

      volatile unsigned char __iomem *readptr;
      volatile unsigned char __iomem *writeptr;

      ushort loadptr;

      unsigned short fsize[8];            /* sent layer2 frames size */

      unsigned char send_seq;
      unsigned char rcv_seq;
      unsigned char unack_seq;
  
      unsigned short free;

      /* channels */

      struct pcbit_chan *b1;
      struct pcbit_chan *b2;  
};

#define STATS_TIMER (10*HZ)
#define ERRTIME     (HZ/10)

/* MRU */
#define MAXBUFSIZE  1534
#define MRU   MAXBUFSIZE

#define STATBUF_LEN 2048
/*
 * 
 */

#endif /* __KERNEL__ */

/* isdn_ctrl only allows a long sized argument */

struct pcbit_ioctl {
      union {
            struct byte_op {
                  ushort addr;
                  ushort value;
            } rdp_byte;
            unsigned long l2_status;
      } info;
};



#define PCBIT_IOCTL_GETSTAT  0x01    /* layer2 status */
#define PCBIT_IOCTL_LWMODE   0x02    /* linear write mode */
#define PCBIT_IOCTL_STRLOAD  0x03    /* start load mode */
#define PCBIT_IOCTL_ENDLOAD  0x04    /* end load mode */
#define PCBIT_IOCTL_SETBYTE  0x05    /* set byte */
#define PCBIT_IOCTL_GETBYTE  0x06    /* get byte */
#define PCBIT_IOCTL_RUNNING  0x07    /* set protocol running */
#define PCBIT_IOCTL_WATCH188 0x08    /* set watch 188 */
#define PCBIT_IOCTL_PING188  0x09    /* ping 188 */
#define PCBIT_IOCTL_FWMODE   0x0A    /* firmware write mode */
#define PCBIT_IOCTL_STOP     0x0B    /* stop protocol */
#define PCBIT_IOCTL_APION    0x0C    /* issue API_ON  */

#ifndef __KERNEL__

#define PCBIT_GETSTAT  (PCBIT_IOCTL_GETSTAT  + IIOCDRVCTL)
#define PCBIT_LWMODE   (PCBIT_IOCTL_LWMODE   + IIOCDRVCTL)
#define PCBIT_STRLOAD  (PCBIT_IOCTL_STRLOAD  + IIOCDRVCTL)
#define PCBIT_ENDLOAD  (PCBIT_IOCTL_ENDLOAD  + IIOCDRVCTL)
#define PCBIT_SETBYTE  (PCBIT_IOCTL_SETBYTE  + IIOCDRVCTL)
#define PCBIT_GETBYTE  (PCBIT_IOCTL_GETBYTE  + IIOCDRVCTL)
#define PCBIT_RUNNING  (PCBIT_IOCTL_RUNNING  + IIOCDRVCTL)
#define PCBIT_WATCH188 (PCBIT_IOCTL_WATCH188 + IIOCDRVCTL)
#define PCBIT_PING188  (PCBIT_IOCTL_PING188  + IIOCDRVCTL)
#define PCBIT_FWMODE   (PCBIT_IOCTL_FWMODE   + IIOCDRVCTL)
#define PCBIT_STOP     (PCBIT_IOCTL_STOP     + IIOCDRVCTL)
#define PCBIT_APION    (PCBIT_IOCTL_APION    + IIOCDRVCTL)

#define MAXSUPERLINE 3000

#endif

#define L2_DOWN     0
#define L2_LOADING  1
#define L2_LWMODE   2
#define L2_FWMODE   3
#define L2_STARTING 4
#define L2_RUNNING  5
#define L2_ERROR    6

void pcbit_deliver(struct work_struct *work);
int pcbit_init_dev(int board, int mem_base, int irq);
void pcbit_terminate(int board);
void pcbit_l3_receive(struct pcbit_dev * dev, ulong msg, struct sk_buff * skb,
                  ushort hdr_len, ushort refnum);
void pcbit_state_change(struct pcbit_dev * dev, struct pcbit_chan * chan,
                  unsigned short i, unsigned short ev, unsigned short f);

#endif

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