sys/dev/ic/cyvar.h

   1 /*      $NetBSD: cyvar.h,v 1.8 2001/01/20 19:29:06 thorpej Exp $        */
   2
   3 /*
   4  * cy_var.h
   5  *
   6  * Driver for Cyclades Cyclom-8/16/32 multiport serial cards
   7  * (currently not tested with Cyclom-32 cards)
   8  *
   9  * Timo Rossi, 1996
  10  *
  11  * Supports both ISA and PCI Cyclom cards
  12  */
  13
  14 /* #define CY_DEBUG */
  15 #define CY_DEBUG1
  16
  17 /*
  18  * Maximum number of ports per card
  19  */
  20 #define CY_MAX_PORTS            (CD1400_NO_OF_CHANNELS * CY_MAX_CD1400s)
  21
  22 #define CY_RX_FIFO_THRESHOLD  6
  23
  24 /*
  25  * Automatic RTS (or actually DTR, the RTS and DTR lines need to be
  26  * exchanged) handshake threshold used if CY_HW_RTS is defined
  27  */
  28 #define CY_RX_DTR_THRESHOLD   9
  29
  30 /*
  31  * read/write cd1400 registers (when sc_softc-structure is available)
  32  */
  33 #define cd_read_reg(sc,chip,reg) bus_space_read_1(sc->sc_memt, \
  34     sc->sc_bsh, sc->sc_cd1400_offs[chip] + \
  35     (((reg << 1)) << sc->sc_bustype))
  36
  37 #define cd_write_reg(sc,chip,reg,val) bus_space_write_1(sc->sc_memt, \
  38     sc->sc_bsh, sc->sc_cd1400_offs[chip] + \
  39     (((reg << 1))<< sc->sc_bustype), (val))
  40
  41 /*
  42  * ibuf is a simple ring buffer. It is always used two
  43  * bytes at a time (status and data)
  44  */
  45 #define CY_IBUF_SIZE (2*512)
  46
  47 /* software state for one port */
  48 struct cy_port {
  49         struct cy_softc *cy_softc;
  50         int             cy_port_num;
  51         int             cy_chip;
  52         int             cy_clock;
  53         struct tty     *cy_tty;
  54         int             cy_openflags;
  55         int             cy_fifo_overruns;
  56         int             cy_ibuf_overruns;
  57         u_char          cy_channel_control;     /* last CCR channel control
  58                                                  * command bits */
  59         u_char          cy_carrier_stat;        /* copied from MSVR2 */
  60         u_char          cy_flags;
  61         u_char         *cy_ibuf, *cy_ibuf_end;
  62         u_char         *cy_ibuf_rd_ptr, *cy_ibuf_wr_ptr;
  63 #ifdef CY_DEBUG1
  64         int             cy_rx_int_count;
  65         int             cy_tx_int_count;
  66         int             cy_modem_int_count;
  67         int             cy_start_count;
  68 #endif /* CY_DEBUG1 */
  69 };
  70
  71 #define CY_F_CARRIER_CHANGED  0x01
  72 #define CY_F_START_BREAK      0x02
  73 #define CY_F_END_BREAK        0x04
  74 #define CY_F_STOP             0x08
  75 #define CY_F_SEND_NUL         0x10
  76 #define CY_F_START            0x20
  77
  78 /* software state for one card */
  79 struct cy_softc {
  80         device_t        sc_dev;
  81         void           *sc_ih;
  82         bus_space_tag_t sc_memt;
  83         bus_space_handle_t sc_bsh;
  84         int             sc_bustype;
  85         int             sc_nchips;      /* Number of cd1400's on this card */
  86         int             sc_cd1400_offs[CY_MAX_CD1400s];
  87         struct cy_port  sc_ports[CY_MAX_PORTS];
  88         int             sc_nchannels;   /* total number of ports */
  89 #ifdef CY_DEBUG1
  90         int             sc_poll_count1;
  91         int             sc_poll_count2;
  92 #endif
  93 };
  94
  95 int     cy_find(struct cy_softc *);
  96 void    cy_attach(struct cy_softc *);
  97 int     cy_intr(void *);