root/include/linux/mISDNhw.h

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/*
 *
 * Author       Karsten Keil <kkeil@novell.com>
 *
 *   Basic declarations for the mISDN HW channels
 *
 * Copyright 2008  by Karsten Keil <kkeil@novell.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#ifndef MISDNHW_H
#define MISDNHW_H
#include <linux/mISDNif.h>
#include <linux/timer.h>

/*
 * HW DEBUG 0xHHHHGGGG
 * H - hardware driver specific bits
 * G - for all drivers
 */

#define DEBUG_HW                0x00000001
#define DEBUG_HW_OPEN           0x00000002
#define DEBUG_HW_DCHANNEL       0x00000100
#define DEBUG_HW_DFIFO          0x00000200
#define DEBUG_HW_BCHANNEL       0x00001000
#define DEBUG_HW_BFIFO          0x00002000

#define MAX_DFRAME_LEN_L1       300
#define MAX_MON_FRAME           32
#define MAX_LOG_SPACE           2048
#define MISDN_COPY_SIZE         32

/* channel->Flags bit field */
#define FLG_TX_BUSY             0       /* tx_buf in use */
#define FLG_TX_NEXT             1       /* next_skb in use */
#define FLG_L1_BUSY             2       /* L1 is permanent busy */
#define FLG_L2_ACTIVATED        3       /* activated from L2 */
#define FLG_OPEN                5       /* channel is in use */
#define FLG_ACTIVE              6       /* channel is activated */
#define FLG_BUSY_TIMER          7
/* channel type */
#define FLG_DCHANNEL            8       /* channel is D-channel */
#define FLG_BCHANNEL            9       /* channel is B-channel */
#define FLG_ECHANNEL            10      /* channel is E-channel */
#define FLG_TRANSPARENT         12      /* channel use transparent data */
#define FLG_HDLC                13      /* channel use hdlc data */
#define FLG_L2DATA              14      /* channel use L2 DATA primitivs */
#define FLG_ORIGIN              15      /* channel is on origin site */
/* channel specific stuff */
#define FLG_FILLEMPTY           16      /* fill fifo on first frame (empty) */
/* arcofi specific */
#define FLG_ARCOFI_TIMER        17
#define FLG_ARCOFI_ERROR        18
/* isar specific */
#define FLG_INITIALIZED         17
#define FLG_DLEETX              18
#define FLG_LASTDLE             19
#define FLG_FIRST               20
#define FLG_LASTDATA            21
#define FLG_NMD_DATA            22
#define FLG_FTI_RUN             23
#define FLG_LL_OK               24
#define FLG_LL_CONN             25
#define FLG_DTMFSEND            26
#define FLG_TX_EMPTY            27
/* stop sending received data upstream */
#define FLG_RX_OFF              28
/* workq events */
#define FLG_RECVQUEUE           30
#define FLG_PHCHANGE            31

#define schedule_event(s, ev)   do { \
                                        test_and_set_bit(ev, &((s)->Flags)); \
                                        schedule_work(&((s)->workq)); \
                                } while (0)

struct dchannel {
        struct mISDNdevice      dev;
        u_long                  Flags;
        struct work_struct      workq;
        void                    (*phfunc) (struct dchannel *);
        u_int                   state;
        void                    *l1;
        void                    *hw;
        int                     slot;   /* multiport card channel slot */
        struct timer_list       timer;
        /* receive data */
        struct sk_buff          *rx_skb;
        int                     maxlen;
        /* send data */
        struct sk_buff_head     squeue;
        struct sk_buff_head     rqueue;
        struct sk_buff          *tx_skb;
        int                     tx_idx;
        int                     debug;
        /* statistics */
        int                     err_crc;
        int                     err_tx;
        int                     err_rx;
};

typedef int     (dchannel_l1callback)(struct dchannel *, u_int);
extern int      create_l1(struct dchannel *, dchannel_l1callback *);

/* private L1 commands */
#define INFO0           0x8002
#define INFO1           0x8102
#define INFO2           0x8202
#define INFO3_P8        0x8302
#define INFO3_P10       0x8402
#define INFO4_P8        0x8502
#define INFO4_P10       0x8602
#define LOSTFRAMING     0x8702
#define ANYSIGNAL       0x8802
#define HW_POWERDOWN    0x8902
#define HW_RESET_REQ    0x8a02
#define HW_POWERUP_REQ  0x8b02
#define HW_DEACT_REQ    0x8c02
#define HW_ACTIVATE_REQ 0x8e02
#define HW_D_NOBLOCKED  0x8f02
#define HW_RESET_IND    0x9002
#define HW_POWERUP_IND  0x9102
#define HW_DEACT_IND    0x9202
#define HW_ACTIVATE_IND 0x9302
#define HW_DEACT_CNF    0x9402
#define HW_TESTLOOP     0x9502
#define HW_TESTRX_RAW   0x9602
#define HW_TESTRX_HDLC  0x9702
#define HW_TESTRX_OFF   0x9802
#define HW_TIMER3_IND   0x9902
#define HW_TIMER3_VALUE 0x9a00
#define HW_TIMER3_VMASK 0x00FF

struct layer1;
extern int      l1_event(struct layer1 *, u_int);

#define MISDN_BCH_FILL_SIZE     4

struct bchannel {
        struct mISDNchannel     ch;
        int                     nr;
        u_long                  Flags;
        struct work_struct      workq;
        u_int                   state;
        void                    *hw;
        int                     slot;   /* multiport card channel slot */
        struct timer_list       timer;
        /* receive data */
        u8                      fill[MISDN_BCH_FILL_SIZE];
        struct sk_buff          *rx_skb;
        unsigned short          maxlen;
        unsigned short          init_maxlen; /* initial value */
        unsigned short          next_maxlen; /* pending value */
        unsigned short          minlen; /* for transparent data */
        unsigned short          init_minlen; /* initial value */
        unsigned short          next_minlen; /* pending value */
        /* send data */
        struct sk_buff          *next_skb;
        struct sk_buff          *tx_skb;
        struct sk_buff_head     rqueue;
        int                     rcount;
        int                     tx_idx;
        int                     debug;
        /* statistics */
        int                     err_crc;
        int                     err_tx;
        int                     err_rx;
        int                     dropcnt;
};

extern int      mISDN_initdchannel(struct dchannel *, int, void *);
extern int      mISDN_initbchannel(struct bchannel *, unsigned short,
                                   unsigned short);
extern int      mISDN_freedchannel(struct dchannel *);
extern void     mISDN_clear_bchannel(struct bchannel *);
extern void     mISDN_freebchannel(struct bchannel *);
extern int      mISDN_ctrl_bchannel(struct bchannel *, struct mISDN_ctrl_req *);
extern void     queue_ch_frame(struct mISDNchannel *, u_int,
                        int, struct sk_buff *);
extern int      dchannel_senddata(struct dchannel *, struct sk_buff *);
extern int      bchannel_senddata(struct bchannel *, struct sk_buff *);
extern int      bchannel_get_rxbuf(struct bchannel *, int);
extern void     recv_Dchannel(struct dchannel *);
extern void     recv_Echannel(struct dchannel *, struct dchannel *);
extern void     recv_Bchannel(struct bchannel *, unsigned int, bool);
extern void     recv_Dchannel_skb(struct dchannel *, struct sk_buff *);
extern void     recv_Bchannel_skb(struct bchannel *, struct sk_buff *);
extern int      get_next_bframe(struct bchannel *);
extern int      get_next_dframe(struct dchannel *);

#endif
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