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      1 /*	$NetBSD: cyvar.h,v 1.9 2008/03/26 17:50:32 matt 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 *);
     98