1/*****************************************************************************/
2
3/*
4 *	stallion.h  -- stallion multiport serial driver.
5 *
6 *	Copyright (C) 1996-1998  Stallion Technologies
7 *	Copyright (C) 1994-1996  Greg Ungerer.
8 *
9 *	This program is free software; you can redistribute it and/or modify
10 *	it under the terms of the GNU General Public License as published by
11 *	the Free Software Foundation; either version 2 of the License, or
12 *	(at your option) any later version.
13 *
14 *	This program is distributed in the hope that it will be useful,
15 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *	GNU General Public License for more details.
18 *
19 *	You should have received a copy of the GNU General Public License
20 *	along with this program; if not, write to the Free Software
21 *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24/*****************************************************************************/
25#ifndef	_STALLION_H
26#define	_STALLION_H
27/*****************************************************************************/
28
29/*
30 *	Define important driver constants here.
31 */
32#define	STL_MAXBRDS		4
33#define	STL_MAXPANELS		4
34#define	STL_MAXBANKS		8
35#define	STL_PORTSPERPANEL	16
36#define	STL_MAXPORTS		64
37#define	STL_MAXDEVS		(STL_MAXBRDS * STL_MAXPORTS)
38
39
40/*
41 *	Define a set of structures to hold all the board/panel/port info
42 *	for our ports. These will be dynamically allocated as required.
43 */
44
45/*
46 *	Define a ring queue structure for each port. This will hold the
47 *	TX data waiting to be output. Characters are fed into this buffer
48 *	from the line discipline (or even direct from user space!) and
49 *	then fed into the UARTs during interrupts. Will use a classic ring
50 *	queue here for this. The good thing about this type of ring queue
51 *	is that the head and tail pointers can be updated without interrupt
52 *	protection - since "write" code only needs to change the head, and
53 *	interrupt code only needs to change the tail.
54 */
55struct stlrq {
56	char	*buf;
57	char	*head;
58	char	*tail;
59};
60
61/*
62 *	Port, panel and board structures to hold status info about each.
63 *	The board structure contains pointers to structures for each panel
64 *	connected to it, and in turn each panel structure contains pointers
65 *	for each port structure for each port on that panel. Note that
66 *	the port structure also contains the board and panel number that it
67 *	is associated with, this makes it (fairly) easy to get back to the
68 *	board/panel info for a port.
69 */
70struct stlport {
71	unsigned long		magic;
72	struct tty_port		port;
73	unsigned int		portnr;
74	unsigned int		panelnr;
75	unsigned int		brdnr;
76	int			ioaddr;
77	int			uartaddr;
78	unsigned int		pagenr;
79	unsigned long		istate;
80	int			baud_base;
81	int			custom_divisor;
82	int			close_delay;
83	int			closing_wait;
84	int			openwaitcnt;
85	int			brklen;
86	unsigned int		sigs;
87	unsigned int		rxignoremsk;
88	unsigned int		rxmarkmsk;
89	unsigned int		imr;
90	unsigned int		crenable;
91	unsigned long		clk;
92	unsigned long		hwid;
93	void			*uartp;
94	comstats_t		stats;
95	struct stlrq		tx;
96};
97
98struct stlpanel {
99	unsigned long	magic;
100	unsigned int	panelnr;
101	unsigned int	brdnr;
102	unsigned int	pagenr;
103	unsigned int	nrports;
104	int		iobase;
105	void		*uartp;
106	void		(*isr)(struct stlpanel *panelp, unsigned int iobase);
107	unsigned int	hwid;
108	unsigned int	ackmask;
109	struct stlport	*ports[STL_PORTSPERPANEL];
110};
111
112struct stlbrd {
113	unsigned long	magic;
114	unsigned int	brdnr;
115	unsigned int	brdtype;
116	unsigned int	state;
117	unsigned int	nrpanels;
118	unsigned int	nrports;
119	unsigned int	nrbnks;
120	int		irq;
121	int		irqtype;
122	int		(*isr)(struct stlbrd *brdp);
123	unsigned int	ioaddr1;
124	unsigned int	ioaddr2;
125	unsigned int	iosize1;
126	unsigned int	iosize2;
127	unsigned int	iostatus;
128	unsigned int	ioctrl;
129	unsigned int	ioctrlval;
130	unsigned int	hwid;
131	unsigned long	clk;
132	unsigned int	bnkpageaddr[STL_MAXBANKS];
133	unsigned int	bnkstataddr[STL_MAXBANKS];
134	struct stlpanel	*bnk2panel[STL_MAXBANKS];
135	struct stlpanel	*panels[STL_MAXPANELS];
136};
137
138
139/*
140 *	Define MAGIC numbers used for above structures.
141 */
142#define	STL_PORTMAGIC	0x5a7182c9
143#define	STL_PANELMAGIC	0x7ef621a1
144#define	STL_BOARDMAGIC	0xa2267f52
145
146/*****************************************************************************/
147#endif
148