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at91dbguvar.h revision 1.5 
      1 /*      $NetBSD: at91dbguvar.h,v 1.5 2012/02/02 19:42:57 tls Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 Embedtronics Oy
      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  *
     15  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #ifndef _AT91DBGUVAR_H_
     30 #define _AT91DBGUVAR_H_
     31 
     32 #include <sys/tty.h>
     33 
     34 /* Hardware flag masks */
     35 #define COM_HW_NOIEN		0x01
     36 #define COM_HW_DEV_OK		0x20
     37 #define COM_HW_CONSOLE		0x40
     38 #define COM_HW_KGDB		0x80
     39 
     40 #define RX_TTY_BLOCKED		0x01
     41 #define RX_TTY_OVERFLOWED	0x02
     42 #define RX_IBUF_BLOCKED		0x04
     43 #define RX_IBUF_OVERFLOWED	0x08
     44 #define RX_ANY_BLOCK		0x0f
     45 
     46 #define AT91DBGU_RING_SIZE	2048
     47 
     48 struct at91dbgu_softc {
     49 	device_t		sc_dev;
     50 	bus_addr_t		sc_hwbase;
     51 	bus_space_tag_t		sc_iot;
     52 	bus_space_handle_t 	sc_ioh;
     53 
     54 	void			*sc_si;
     55 
     56 	struct tty		*sc_tty;
     57 
     58 	u_char			*sc_rbuf, *sc_ebuf;
     59 
     60  	u_char			*sc_tba;
     61  	u_int			sc_tbc;
     62 
     63 	u_char			*volatile sc_rbget,
     64 				*volatile sc_rbput;
     65  	volatile u_int		sc_rbavail;
     66 
     67 	/* status flags */
     68 	int			sc_hwflags, sc_swflags;
     69 
     70 	volatile u_int		sc_rx_flags,
     71 				sc_tx_busy,
     72 				sc_tx_done,
     73 				sc_tx_stopped,
     74 				sc_st_check,
     75 				sc_rx_ready;
     76 
     77 	volatile u_int		sc_brgr, sc_ier, sc_poll;
     78 
     79 	/* power management hooks */
     80 	int			(*enable)(struct at91dbgu_softc *);
     81 	int			(*disable)(struct at91dbgu_softc *);
     82 
     83 	int			enabled;
     84 #ifdef RND_COM
     85 	krndsource_t  rnd_source;
     86 #endif
     87 };
     88 
     89 void	at91dbgu_attach_subr(struct at91dbgu_softc *);
     90 int	at91dbgu_intr(void* arg);
     91 
     92 void	at91dbgu_attach_cn(bus_space_tag_t, int, int mode);
     93 
     94 #endif /* _AT91DBGUVAR_H_ */
     95