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clmpccvar.h revision 1.1 
      1 /*	$NetBSD: clmpccvar.h,v 1.1 1999/02/13 17:05:20 scw Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Steve C. Woodford.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef __clmpccvar_h
     40 #define __clmpccvar_h
     41 
     42 
     43 /* Buffer size for character buffer */
     44 #define	CLMPCC_RING_SIZE	512
     45 
     46 /* How many channels per chip */
     47 #define CLMPCC_NUM_CHANS	4
     48 
     49 /* Reasons for calling the MD code's iack hook function */
     50 #define CLMPCC_IACK_MODEM	0
     51 #define CLMPCC_IACK_RX		1
     52 #define CLMPCC_IACK_TX		2
     53 
     54 
     55 struct clmpcc_softc;
     56 
     57 /*
     58  * Each channel is represented by one of the following structures
     59  */
     60 struct clmpcc_chan {
     61 	struct tty	*ch_tty;	/* This channel's tty structure */
     62 	struct clmpcc_softc *ch_sc;	/* Pointer to chip's softc structure */
     63 	int		ch_car;		/* Channel number (CD2400_REG_CAR) */
     64 	u_char		ch_openflags;	/* Persistant TIOC flags */
     65 	u_char		ch_flags;	/* Various channel-specific flags */
     66 #define	CLMPCC_FLG_IS_CONSOLE	0x01	/* Channel is system console */
     67 #define CLMPCC_FLG_CARRIER_CHNG	0x02
     68 #define CLMPCC_FLG_START_BREAK 	0x04
     69 #define CLMPCC_FLG_END_BREAK 	0x08
     70 #define CLMPCC_FLG_START 	0x10
     71 #define CLMPCC_FLG_STOP 	0x20
     72 #define CLMPCC_FLG_SEND_NULL 	0x40
     73 #define CLMPCC_FLG_FIFO_CLEAR	0x80
     74 
     75 	u_char		ch_fifo;	/* Current Rx Fifo threshold */
     76 	u_char		ch_control;
     77 
     78 	u_int8_t	*ch_ibuf;	/* Start of input ring buffer */
     79 	u_int8_t	*ch_ibuf_end;	/* End of input ring buffer */
     80 	u_int8_t	*ch_ibuf_rd;	/* Input buffer tail (reader) */
     81 	u_int8_t	*ch_ibuf_wr;	/* Input buffer head (writer) */
     82 };
     83 
     84 
     85 struct clmpcc_softc {
     86 	struct device	sc_dev;
     87 
     88 	/*
     89 	 * The bus/MD-specific attachment code must initialise the
     90 	 * following four fields before calling 'clmpcc_attach_subr()'.
     91 	 */
     92 	bus_space_tag_t	sc_iot;		/* Tag for parent bus */
     93 	bus_space_handle_t sc_ioh;	/* Handle for chip's regs */
     94 
     95 	void		*sc_data;	/* MD-specific data */
     96 	int		sc_clk;		/* Clock-rate, in Hz */
     97 	u_char		sc_vector_base;	/* Vector base reg, or 0 for auto */
     98 	u_char		sc_rpilr;	/* Receive Priority Interupt Level */
     99 	u_char		sc_tpilr;	/* Transmit Priority Interupt Level */
    100 	u_char		sc_mpilr;	/* Modem Priority Interupt Level */
    101 	int		sc_swaprtsdtr;	/* Non-zero if RTS and DTR swapped */
    102 	u_int		sc_byteswap;	/* One of the following ... */
    103 #define CLMPCC_BYTESWAP_LOW	0x00	/* *byteswap pin is low */
    104 #define CLMPCC_BYTESWAP_HIGH	0x03	/* *byteswap pin is high */
    105 
    106 	/* Called to request a soft interrupt callback to clmpcc_softintr */
    107 	void		(*sc_softhook) __P((struct clmpcc_softc *));
    108 
    109 	/* Called when an interrupt has to be acknowledged in polled mode. */
    110 	void		(*sc_iackhook) __P((struct clmpcc_softc *, int));
    111 
    112 	/*
    113 	 * No user-serviceable parts below
    114 	 */
    115 	int		sc_soft_running;
    116 	struct clmpcc_chan sc_chans[CLMPCC_NUM_CHANS];
    117 };
    118 
    119 extern void	clmpcc_attach	__P((struct clmpcc_softc *));
    120 extern int	clmpcc_cnattach	__P((struct clmpcc_softc *, int, int));
    121 extern int	clmpcc_rxintr	__P((void *));
    122 extern int	clmpcc_txintr	__P((void *));
    123 extern int	clmpcc_mdintr	__P((void *));
    124 extern int 	clmpcc_softintr	__P((void *));
    125 
    126 #endif	/* __clmpccvar_h */
    127