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#ifdef RND_COM
35#include <sys/rndsource.h>
36#endif
37
38/* Hardware flag masks */
39#define COM_HW_NOIEN		0x01
40#define COM_HW_DEV_OK		0x20
41#define COM_HW_CONSOLE		0x40
42#define COM_HW_KGDB		0x80
43
44#define RX_TTY_BLOCKED		0x01
45#define RX_TTY_OVERFLOWED	0x02
46#define RX_IBUF_BLOCKED		0x04
47#define RX_IBUF_OVERFLOWED	0x08
48#define RX_ANY_BLOCK		0x0f
49
50#define AT91DBGU_RING_SIZE	2048
51
52struct at91dbgu_softc {
53	device_t		sc_dev;
54	bus_addr_t		sc_hwbase;
55	bus_space_tag_t		sc_iot;
56	bus_space_handle_t 	sc_ioh;
57
58	void			*sc_si;
59
60	struct tty		*sc_tty;
61
62	u_char			*sc_rbuf, *sc_ebuf;
63
64 	u_char			*sc_tba;
65 	u_int			sc_tbc;
66
67	u_char			*volatile sc_rbget,
68				*volatile sc_rbput;
69 	volatile u_int		sc_rbavail;
70
71	/* status flags */
72	int			sc_hwflags, sc_swflags;
73
74	volatile u_int		sc_rx_flags,
75				sc_tx_busy,
76				sc_tx_done,
77				sc_tx_stopped,
78				sc_st_check,
79				sc_rx_ready;
80
81	volatile u_int		sc_brgr, sc_ier, sc_poll;
82
83	/* power management hooks */
84	int			(*enable)(struct at91dbgu_softc *);
85	int			(*disable)(struct at91dbgu_softc *);
86
87	int			enabled;
88#ifdef RND_COM
89	krndsource_t  rnd_source;
90#endif
91};
92
93void	at91dbgu_attach_subr(struct at91dbgu_softc *);
94int	at91dbgu_intr(void* arg);
95
96void	at91dbgu_attach_cn(bus_space_tag_t, int, int mode);
97
98#endif /* _AT91DBGUVAR_H_ */
99