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plcomvar.h revision 1.8 
      1 /*	$NetBSD: plcomvar.h,v 1.8 2012/02/02 19:42:59 tls Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Christopher G. Demetriou.  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  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Christopher G. Demetriou
     17  *	for the NetBSD Project.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include "rnd.h"
     34 #include "opt_multiprocessor.h"
     35 #include "opt_lockdebug.h"
     36 #include "opt_plcom.h"
     37 #include "opt_kgdb.h"
     38 
     39 #ifdef RND_COM
     40 #include <sys/rnd.h>
     41 #endif
     42 
     43 #include <sys/callout.h>
     44 #include <sys/timepps.h>
     45 #include <sys/simplelock.h>
     46 
     47 int  plcomcnattach	(bus_space_tag_t, bus_addr_t, int, int, tcflag_t, int);
     48 void plcomcndetach	(void);
     49 
     50 #ifdef KGDB
     51 int  plcom_kgdb_attach	(bus_space_tag_t, bus_addr_t, int, int, tcflag_t);
     52 #endif
     53 
     54 int  plcom_is_console	(bus_space_tag_t, int, bus_space_handle_t *);
     55 
     56 /* Hardware flag masks */
     57 #define	PLCOM_HW_NOIEN		0x01
     58 #define	PLCOM_HW_FIFO		0x02
     59 #define	PLCOM_HW_HAYESP		0x04
     60 #define	PLCOM_HW_FLOW		0x08
     61 #define	PLCOM_HW_DEV_OK		0x20
     62 #define	PLCOM_HW_CONSOLE	0x40
     63 #define	PLCOM_HW_KGDB		0x80
     64 #define	PLCOM_HW_TXFIFO_DISABLE	0x100
     65 
     66 /* Buffer size for character buffer */
     67 #define	PLCOM_RING_SIZE		2048
     68 
     69 struct plcom_softc {
     70 	struct device sc_dev;
     71 	void *sc_si;
     72 	struct tty *sc_tty;
     73 
     74 	struct callout sc_diag_callout;
     75 
     76 	bus_addr_t sc_iounit;
     77 	int sc_frequency;
     78 
     79 	bus_space_tag_t sc_iot;
     80 	bus_space_handle_t sc_ioh;
     81 
     82 	u_int sc_overflows,
     83 	      sc_floods,
     84 	      sc_errors;
     85 
     86 	int sc_hwflags,
     87 	    sc_swflags;
     88 	u_int sc_fifolen;
     89 
     90 	u_int sc_r_hiwat,
     91 	      sc_r_lowat;
     92 	u_char *volatile sc_rbget,
     93 	       *volatile sc_rbput;
     94  	volatile u_int sc_rbavail;
     95 	u_char *sc_rbuf,
     96 	       *sc_ebuf;
     97 
     98  	u_char *sc_tba;
     99  	u_int sc_tbc,
    100 	      sc_heldtbc;
    101 
    102 	volatile u_char sc_rx_flags,
    103 #define	RX_TTY_BLOCKED		0x01
    104 #define	RX_TTY_OVERFLOWED	0x02
    105 #define	RX_IBUF_BLOCKED		0x04
    106 #define	RX_IBUF_OVERFLOWED	0x08
    107 #define	RX_ANY_BLOCK		0x0f
    108 			sc_tx_busy,
    109 			sc_tx_done,
    110 			sc_tx_stopped,
    111 			sc_st_check,
    112 			sc_rx_ready;
    113 
    114 	volatile u_char sc_heldchange;
    115 	volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
    116 	    sc_mcr_active, sc_lcr, sc_cr, sc_dlbl, sc_dlbh;
    117 	u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
    118 	u_int sc_fifo;
    119 
    120 	/* Support routine to program mcr lines, if present.  */
    121 	void	(*sc_set_mcr)(void *, int, u_int);
    122 	void	*sc_set_mcr_arg;
    123 
    124 	/* power management hooks */
    125 	int (*enable) (struct plcom_softc *);
    126 	void (*disable) (struct plcom_softc *);
    127 	int enabled;
    128 
    129 	/* PPS signal on DCD, with or without inkernel clock disciplining */
    130 	u_char	sc_ppsmask;			/* pps signal mask */
    131 	u_char	sc_ppsassert;			/* pps leading edge */
    132 	u_char	sc_ppsclear;			/* pps trailing edge */
    133 	pps_info_t ppsinfo;
    134 	pps_params_t ppsparam;
    135 
    136 #ifdef RND_COM
    137 	krndsource_t  rnd_source;
    138 #endif
    139 	struct simplelock	sc_lock;
    140 };
    141 
    142 int  plcomprobe1	(bus_space_tag_t, bus_space_handle_t);
    143 int  plcomintr		(void *);
    144 void plcom_attach_subr	(struct plcom_softc *);
    145 int  plcom_detach	(struct device *, int);
    146 int  plcom_activate	(struct device *, enum devact);
    147 
    148