1/*-
2 * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
3 *   based on work by Slawa Olhovchenkov
4 *                    John Prince <johnp@knight-trosoft.com>
5 *                    Eric Hernes
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32#define	W(p)				(*(u_int16_t *)(p))
33#define	vW(p)				(*(u_int16_t volatile *)(p))
34#define	D(p)				(*(u_int32_t *)(p))
35#define	vD(p)				(*(u_int32_t volatile *)(p))
36
37#define	CE_OVERRUN			0
38#define	CE_INTERRUPT_BUF_OVERFLOW	1
39#define	CE_TTY_BUF_OVERFLOW		2
40#define	CE_NTYPES			3
41#define	CE_RECORD(com, errnum)		(++(com)->delta_error_counts[errnum])
42
43/*#define DIGI_INTERRUPT*/
44
45#ifndef DEBUG
46#define	DEBUG
47#endif
48
49#ifdef DEBUG
50extern unsigned digi_debug;
51#define	DLOG(level, args)	if (digi_debug & (level)) device_printf args
52#else
53#define	DLOG(level, args)
54#endif
55
56
57struct digi_softc;
58
59/* digiboard port structure */
60struct digi_p {
61	struct digi_softc *sc;
62
63	int status;
64#define ENABLED 1
65#define DIGI_DTR_OFF 2
66#define PAUSE_TX 8
67#define PAUSE_RX 16
68
69	int opencnt;
70	u_short txbufsize;
71	u_short rxbufsize;
72	volatile struct board_chan *bc;
73	struct tty *tp;
74
75	u_char *txbuf;
76	u_char *rxbuf;
77	u_char txwin;
78	u_char rxwin;
79
80	u_char pnum;		/* port number */
81
82	u_char modemfake;	/* Modem values to be forced */
83	u_char mstat;
84	u_char modem;		/* Force values */
85
86	/*
87	 * The high level of the driver never reads status registers directly
88	 * because there would be too many side effects to handle conveniently.
89	 * Instead, it reads copies of the registers stored here by the
90	 * interrupt handler.
91	 */
92	u_char last_modem_status;	/* last MSR read by intr handler */
93	u_char prev_modem_status;	/* last MSR handled by high level */
94
95	u_long bytes_in, bytes_out;
96	u_int delta_error_counts[CE_NTYPES];
97	u_long error_counts;
98
99	tcflag_t c_iflag;		/* hold true IXON/IXOFF/IXANY */
100	int lcc, lostcc, lbuf;
101	u_char send_ring;
102
103	unsigned laltpin : 1;		/* Alternate pin settings locked */
104	unsigned ialtpin : 1;		/* Initial alternate pin settings */
105
106	int cd;				/* Depends on the altpin setting */
107	int dsr;
108};
109
110/*
111 * Map TIOCM_* values to digiboard values
112 */
113struct digi_control_signals {
114	int rts;
115	int cd;
116	int dsr;
117	int cts;
118	int ri;
119	int dtr;
120};
121
122enum digi_board_status {
123	DIGI_STATUS_NOTINIT,
124	DIGI_STATUS_ENABLED,
125	DIGI_STATUS_DISABLED
126};
127
128/* Digiboard per-board structure */
129struct digi_softc {
130	/* struct board_info */
131	device_t dev;
132
133	const char *name;
134	enum digi_board_status status;
135	u_short numports;		/* number of ports on card */
136	u_int port;			/* I/O port */
137	u_int wport;			/* window select I/O port */
138
139	struct {
140		struct resource *mem;
141		int mrid;
142		struct resource *irq;
143		int irqrid;
144		struct resource *io;
145		int iorid;
146		void *irqHandler;
147		int unit;
148		struct cdev *ctldev;
149	} res;
150
151	u_char *vmem;			/* virtual memory address */
152	u_char *memcmd;
153	volatile u_char *memevent;
154	long pmem;			/* physical memory address */
155
156	struct {
157		u_char *data;
158		size_t size;
159	} bios, fep, link;
160
161#ifdef DIGI_INTERRUPT
162	struct timeval intr_timestamp;
163#endif
164
165	struct digi_p *ports;	/* pointer to array of port descriptors */
166	volatile struct global_data *gdata;
167	u_char window;		/* saved window */
168	int win_size;
169	int win_bits;
170	int mem_size;
171	int mem_seg;
172	enum digi_model model;
173	const struct digi_control_signals *csigs;
174	int opencnt;
175	unsigned pcibus : 1;		/* On a PCI bus ? */
176
177	struct callout_handle callout;	/* poll timeout handle */
178	struct callout_handle inttest;	/* int test timeout handle */
179	const char *module;
180
181	u_char *(*setwin)(struct digi_softc *_sc, unsigned _addr);
182	void	(*hidewin)(struct digi_softc *_sc);
183	void	(*towin)(struct digi_softc *_sc, int _win);
184#ifdef DEBUG
185	int	intr_count;
186#endif
187};
188
189extern devclass_t digi_devclass;
190
191extern const struct digi_control_signals digi_xixe_signals;
192extern const struct digi_control_signals digi_normal_signals;
193
194const char	*digi_errortxt(int _id);
195int		 digi_attach(struct digi_softc *);
196int		 digi_detach(device_t _dev);
197int		 digi_shutdown(device_t _dev);
198void		 digi_delay(struct digi_softc *_sc, const char *_txt,
199		     u_long _timo);
200