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epcomvar.h revision 1.5.2.1 
      1 /*      $NetBSD: epcomvar.h,v 1.5.2.1 2012/02/18 07:31:25 mrg Exp $        */
      2 /*-
      3  * Copyright (c) 2004 Jesse Off
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     24  * SUCH DAMAGE.
     25  *
     26  */
     27 
     28 #ifndef _EPCOMVAR_H_
     29 #define _EPCOMVAR_H_
     30 
     31 /* Hardware flag masks */
     32 #define COM_HW_NOIEN		0x01
     33 #define COM_HW_DEV_OK		0x20
     34 #define COM_HW_CONSOLE		0x40
     35 #define COM_HW_KGDB		0x80
     36 
     37 #define RX_TTY_BLOCKED		0x01
     38 #define RX_TTY_OVERFLOWED	0x02
     39 #define RX_IBUF_BLOCKED		0x04
     40 #define RX_IBUF_OVERFLOWED	0x08
     41 #define RX_ANY_BLOCK		0x0f
     42 
     43 #define EPCOM_RING_SIZE	2048
     44 
     45 struct epcom_softc {
     46 	struct device		sc_dev;
     47 	bus_addr_t		sc_hwbase;
     48 	bus_space_tag_t		sc_iot;
     49 	bus_space_handle_t 	sc_ioh;
     50 
     51 	void			*sc_si;
     52 
     53 	struct tty		*sc_tty;
     54 
     55 	u_char			*sc_rbuf, *sc_ebuf;
     56 
     57  	u_char			*sc_tba;
     58  	u_int			sc_tbc;
     59 
     60 	u_char			*volatile sc_rbget,
     61 				*volatile sc_rbput;
     62  	volatile u_int		sc_rbavail;
     63 
     64 	/* status flags */
     65 	int			sc_hwflags, sc_swflags;
     66 
     67 	volatile u_int		sc_rx_flags,
     68 				sc_tx_busy,
     69 				sc_tx_done,
     70 				sc_tx_stopped,
     71 				sc_st_check,
     72 				sc_rx_ready;
     73 
     74 	/* control registers */
     75 	u_int			sc_lcrlo;
     76 	u_int			sc_lcrmid;
     77 	u_int			sc_lcrhi;
     78 	u_int			sc_ctrl;
     79 
     80 	/* power management hooks */
     81 	int			(*enable)(struct epcom_softc *);
     82 	int			(*disable)(struct epcom_softc *);
     83 
     84 	int			enabled;
     85 #ifdef RND_COM
     86 	krndsource_t  rnd_source;
     87 #endif
     88 };
     89 
     90 void	epcom_attach_subr(struct epcom_softc *);
     91 
     92 int	epcomintr(void* arg);
     93 int	epcomcnattach(bus_space_tag_t, bus_addr_t, bus_space_handle_t,
     94 		       int, tcflag_t);
     95 
     96 #endif /* _EPCOMVAR_H_ */
     97