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cyvar.h revision 1.6 
      1 /*	$NetBSD: cyvar.h,v 1.6 2001/01/20 02:24:16 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  * Port number on card encoded in low 5 bits
     32  * card number in next 2 bits (only space for 4 cards)
     33  * high bit reserved for dialout flag
     34  */
     35 #define CY_PORT(x) (minor(x) & 0x1f)
     36 #define CY_CARD(x) ((minor(x) >> 5) & 3)
     37 #define CY_DIALOUT(x) ((minor(x) & 0x80) != 0)
     38 #define CY_DIALIN(x) (!CY_DIALOUT(x))
     39 
     40 /*
     41  * read/write cd1400 registers (when sc_softc-structure is available)
     42  */
     43 #define cd_read_reg(sc,chip,reg) bus_space_read_1(sc->sc_memt, \
     44     sc->sc_bsh, sc->sc_cd1400_offs[chip] + \
     45     (((reg << 1)) << sc->sc_bustype))
     46 
     47 #define cd_write_reg(sc,chip,reg,val) bus_space_write_1(sc->sc_memt, \
     48     sc->sc_bsh, sc->sc_cd1400_offs[chip] + \
     49     (((reg << 1))<< sc->sc_bustype), (val))
     50 
     51 /*
     52  * ibuf is a simple ring buffer. It is always used two
     53  * bytes at a time (status and data)
     54  */
     55 #define CY_IBUF_SIZE (2*512)
     56 
     57 /* software state for one port */
     58 struct cy_port {
     59 	int             cy_port_num;
     60 	int             cy_chip;
     61 	int             cy_clock;
     62 	struct tty     *cy_tty;
     63 	int             cy_openflags;
     64 	int             cy_fifo_overruns;
     65 	int             cy_ibuf_overruns;
     66 	u_char          cy_channel_control;	/* last CCR channel control
     67 						 * command bits */
     68 	u_char          cy_carrier_stat;	/* copied from MSVR2 */
     69 	u_char          cy_flags;
     70 	u_char         *cy_ibuf, *cy_ibuf_end;
     71 	u_char         *cy_ibuf_rd_ptr, *cy_ibuf_wr_ptr;
     72 #ifdef CY_DEBUG1
     73 	int             cy_rx_int_count;
     74 	int             cy_tx_int_count;
     75 	int             cy_modem_int_count;
     76 	int             cy_start_count;
     77 #endif /* CY_DEBUG1 */
     78 };
     79 
     80 #define CY_F_CARRIER_CHANGED  0x01
     81 #define CY_F_START_BREAK      0x02
     82 #define CY_F_END_BREAK        0x04
     83 #define CY_F_STOP             0x08
     84 #define CY_F_SEND_NUL         0x10
     85 #define CY_F_START            0x20
     86 
     87 /* software state for one card */
     88 struct cy_softc {
     89 	struct device   sc_dev;
     90 	void           *sc_ih;
     91 	bus_space_tag_t sc_memt;
     92 	bus_space_handle_t sc_bsh;
     93 	int             sc_bustype;
     94 	int		sc_nchips;	/* Number of cd1400's on this card */
     95 	int             sc_cd1400_offs[CY_MAX_CD1400s];
     96 	struct cy_port  sc_ports[CY_MAX_PORTS];
     97 #ifdef CY_DEBUG1
     98 	int             sc_poll_count1;
     99 	int             sc_poll_count2;
    100 #endif
    101 };
    102 
    103 int	cy_find(struct cy_softc *);
    104 void	cy_attach(struct device *, struct device *, void *);
    105 int	cy_intr(void *);
    106