sys/dev/pci/iwicvar.h

   1 /*      $NetBSD: iwicvar.h,v 1.4 2005/12/11 12:22:50 christos Exp $     */
   2
   3 /*
   4  * Copyright (c) 1999, 2000 Dave Boyce. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #ifndef _IWICVAR_H_
  29 #define _IWICVAR_H_
  30
  31 #include <netisdn/i4b_debug.h>
  32 #include <netisdn/i4b_ioctl.h>
  33 #include <netisdn/i4b_trace.h>
  34
  35 #include <netisdn/i4b_l2.h>
  36 #include <netisdn/i4b_l1l2.h>
  37 #include <netisdn/i4b_l3l4.h>
  38
  39 /*---------------------------------------------------------------------------*
  40  *      state of a B channel
  41  *---------------------------------------------------------------------------*/
  42 struct iwic_bchan {
  43         int channel;            /* channel number        */
  44         int offset;             /* offset from iobase    */
  45         int bprot;              /* b channel protocol used */
  46         int state;              /* transceiver state:    */
  47 #define ST_IDLE         0x00    /* channel idle          */
  48 #define ST_TX_ACTIVE    0x01    /* tx running            */
  49
  50         unsigned int sc_trace_bcount;
  51
  52         /* receive data from ISDN */
  53
  54         struct ifqueue rx_queue;/* receiver queue        */
  55         int rxcount;            /* rx statistics counter */
  56         struct mbuf *in_mbuf;   /* rx input buffer       */
  57         u_char *in_cbptr;       /* curr buffer pointer   */
  58         int in_len;             /* rx input buffer len   */
  59
  60         /* transmit data to ISDN */
  61
  62         struct ifqueue tx_queue;/* transmitter queue             */
  63         int txcount;            /* tx statistics counter         */
  64         struct mbuf *out_mbuf_head;     /* first mbuf in possible chain */
  65         struct mbuf *out_mbuf_cur;      /* current mbuf in possbl chain */
  66         unsigned char *out_mbuf_cur_ptr;        /* data pointer into mbuf    */
  67         int out_mbuf_cur_len;   /* remaining bytes in mbuf    */
  68
  69         /* linktab */
  70
  71         isdn_link_t iwic_isdn_linktab;
  72         const struct isdn_l4_driver_functions *l4_driver;
  73         void *l4_driver_softc;
  74 };
  75 /*---------------------------------------------------------------------------*
  76  *      state of a D channel
  77  *---------------------------------------------------------------------------*/
  78 struct iwic_dchan {
  79         int enabled;
  80         int trace_count;
  81         struct mbuf *ibuf;
  82         u_char *ibuf_ptr;       /* Input buffer pointer */
  83         int ibuf_len;           /* Current length of input buffer */
  84         int ibuf_max_len;       /* Max length in input buffer */
  85         int rx_count;
  86
  87         int tx_ready;           /* Can send next 64 bytes of data. */
  88         int tx_count;
  89
  90         struct mbuf *obuf;
  91         int free_obuf;
  92         u_char *obuf_ptr;
  93         int obuf_len;
  94
  95         struct mbuf *obuf2;
  96         int free_obuf2;
  97 };
  98 /*---------------------------------------------------------------------------*
  99  *      state of one iwic unit
 100  *---------------------------------------------------------------------------*/
 101 struct iwic_softc {
 102         struct device sc_dev;
 103
 104         const char *sc_cardname;
 105
 106         bus_addr_t sc_iobase;
 107         bus_size_t sc_iosize;
 108         bus_space_handle_t sc_io_bh;
 109         bus_space_tag_t sc_io_bt;
 110
 111         struct iwic_dchan sc_dchan;
 112         struct iwic_bchan sc_bchan[2];
 113
 114         void *sc_ih;            /* interrupt handler */
 115         pci_chipset_tag_t sc_pc;
 116
 117         void *sc_l3token;       /* pointer to registered L3 instance */
 118         struct l2_softc sc_l2;  /* D-channel variables */
 119
 120         int sc_I430state;
 121         int sc_I430T3;
 122
 123         int sc_trace;
 124 };
 125 /*---------------------------------------------------------------------------*
 126  *      rd/wr register/fifo macros
 127  *---------------------------------------------------------------------------*/
 128
 129 #include <sys/bus.h>
 130
 131 #define IWIC_READ(sc,reg)       bus_space_read_1((sc)->sc_io_bt,(sc)->sc_io_bh,(reg))
 132 #define IWIC_WRITE(sc,reg,val)  bus_space_write_1((sc)->sc_io_bt,(sc)->sc_io_bh,(reg),(val))
 133 #define IWIC_WRDFIFO(sc,p,l)    bus_space_write_multi_1((sc)->sc_io_bt,(sc)->sc_io_bh,D_XFIFO,(p),(l))
 134 #define IWIC_RDDFIFO(sc,p,l)    bus_space_read_multi_1((sc)->sc_io_bt,(sc)->sc_io_bh,D_RFIFO,(p),(l))
 135 #define IWIC_WRBFIFO(sc,b,p,l)  bus_space_write_multi_1((sc)->sc_io_bt,(sc)->sc_io_bh,(b)->offset + B_XFIFO,(p),(l))
 136 #define IWIC_RDBFIFO(sc,b,p,l)  bus_space_read_multi_1((sc)->sc_io_bt,(sc)->sc_io_bh,(b)->offset + B_RFIFO,(p),(l))
 137
 138 /*---------------------------------------------------------------------------*
 139  *      possible I.430 states
 140  *---------------------------------------------------------------------------*/
 141 enum I430states {
 142         ST_F3N,                 /* F3 Deactivated, no clock      */
 143         ST_F3,                  /* F3 Deactivated                */
 144         ST_F4,                  /* F4 Awaiting Signal            */
 145         ST_F5,                  /* F5 Identifying Input          */
 146         ST_F6,                  /* F6 Synchronized               */
 147         ST_F7,                  /* F7 Activated                  */
 148         ST_F8,                  /* F8 Lost Framing               */
 149         ST_ILL,                 /* Illegal State                 */
 150         N_STATES
 151 };
 152 /*---------------------------------------------------------------------------*
 153  *      possible I.430 events
 154  *---------------------------------------------------------------------------*/
 155 enum I430events {
 156         EV_PHAR,                /* PH ACTIVATE REQUEST          */
 157         EV_CE,                  /* Clock enabled                */
 158         EV_T3,                  /* Timer 3 expired              */
 159         EV_INFO0,               /* receiving INFO0              */
 160         EV_RSY,                 /* receiving any signal         */
 161         EV_INFO2,               /* receiving INFO2              */
 162         EV_INFO48,              /* receiving INFO4 pri 8/9      */
 163         EV_INFO410,             /* receiving INFO4 pri 10/11    */
 164         EV_DR,                  /* Deactivate Request           */
 165         EV_PU,                  /* Power UP                     */
 166         EV_DIS,                 /* Disconnected (only 2085)     */
 167         EV_EI,                  /* Error Indication             */
 168         EV_ILL,                 /* Illegal Event                */
 169         N_EVENTS
 170 };
 171 /*---------------------------------------------------------------------------*
 172  *      available commands
 173  *---------------------------------------------------------------------------*/
 174 enum I430commands {
 175         CMD_ECK,                /* Enable clock                  */
 176         CMD_TIM,                /* Timing                        */
 177         CMD_RT,                 /* Reset                         */
 178         CMD_AR8,                /* Activation request pri 8      */
 179         CMD_AR10,               /* Activation request pri 10     */
 180         CMD_DIU,                /* Deactivate Indication Upstream */
 181         CMD_ILL                 /* Illegal command               */
 182 };
 183
 184 void iwic_init(struct iwic_softc *);
 185 void iwic_next_state(struct iwic_softc *, int);
 186
 187 void iwic_dchan_init(struct iwic_softc *);
 188 void iwic_dchan_xirq(struct iwic_softc *);
 189 void iwic_dchan_xfer_irq(struct iwic_softc *, int);
 190 void iwic_dchan_disable(struct iwic_softc *);
 191 int iwic_dchan_data_req(struct iwic_softc *, struct mbuf *, int);
 192 void iwic_dchan_transmit(struct iwic_softc *);
 193
 194 const char *iwic_printstate(struct iwic_softc *);
 195
 196 void iwic_init_linktab(struct iwic_softc *);
 197 void iwic_bchan_xirq(struct iwic_softc *, int);
 198 void iwic_bchannel_setup(isdn_layer1token, int, int, int);
 199
 200 #endif /* _IWICVAR_H_ */