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      1 /*	$NetBSD: gfttyvar.h,v 1.2 2024/01/06 17:52:43 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2023 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _DEV_GOLDFISH_GFTTYVAR_H_
     33 #define	_DEV_GOLDFISH_GFTTYVAR_H_
     34 
     35 #include <sys/bus.h>
     36 #include <sys/mutex.h>
     37 #include <sys/tty.h>
     38 
     39 struct gftty_config {
     40 	bus_space_tag_t		c_bst;
     41 	bus_space_handle_t	c_bsh;
     42 	uint32_t		c_version;
     43 };
     44 
     45 struct gftty_softc {
     46 	device_t		sc_dev;
     47 	struct gftty_config	*sc_config;
     48 
     49 	void			*sc_ih;
     50 	void			*sc_rx_si;
     51 
     52 	bus_dma_tag_t		sc_dmat;
     53 	bus_dmamap_t		sc_tx_dma;
     54 	bus_dmamap_t		sc_rx_dma;
     55 
     56 	kmutex_t		sc_hwlock;	/* locks DMA pointer */
     57 
     58 	struct tty		*sc_tty;
     59 	char			*sc_rxbufs[2];
     60 	bus_addr_t		sc_rxaddrs[2];
     61 	char			*sc_rxbuf;	/* tty lock */
     62 	bus_addr_t		sc_rxaddr;	/* tty lock */
     63 	int			sc_rxpos;	/* tty lock */
     64 	int			sc_rxcur;	/* tty lock */
     65 };
     66 
     67 void	gftty_attach(struct gftty_softc *sc);
     68 bool	gftty_is_console(struct gftty_softc *sc);
     69 void	gftty_alloc_config(struct gftty_softc *sc, bus_space_tag_t,
     70 	    bus_space_handle_t);
     71 int	gftty_intr(void *);
     72 void	gftty_cnattach(bus_space_tag_t, bus_space_handle_t);
     73 
     74 #endif /* _DEV_GOLDFISH_GFTTYVAR_H_ */
     75