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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#include <linux/version.h>
25
26/*****************************************************************************/
27#ifndef _STALLION_H
28#define _STALLION_H
29/*****************************************************************************/
30
31/*
32 * Define important driver constants here.
33 */
34#define STL_MAXBRDS 4
35#define STL_MAXPANELS 4
36#define STL_MAXBANKS 8
37#define STL_PORTSPERPANEL 16
38#define STL_MAXPORTS 64
39#define STL_MAXDEVS (STL_MAXBRDS * STL_MAXPORTS)
40
41
42/*
43 * Define a set of structures to hold all the board/panel/port info
44 * for our ports. These will be dynamically allocated as required.
45 */
46
47/*
48 * Define a ring queue structure for each port. This will hold the
49 * TX data waiting to be output. Characters are fed into this buffer
50 * from the line discipline (or even direct from user space!) and
51 * then fed into the UARTs during interrupts. Will use a classic ring
52 * queue here for this. The good thing about this type of ring queue
53 * is that the head and tail pointers can be updated without interrupt
54 * protection - since "write" code only needs to change the head, and
55 * interrupt code only needs to change the tail.
56 */
57typedef struct {
58 char *buf;
59 char *head;
60 char *tail;
61} stlrq_t;
62
63/*
64 * Port, panel and board structures to hold status info about each.
65 * The board structure contains pointers to structures for each panel
66 * connected to it, and in turn each panel structure contains pointers
67 * for each port structure for each port on that panel. Note that
68 * the port structure also contains the board and panel number that it
69 * is associated with, this makes it (fairly) easy to get back to the
70 * board/panel info for a port.
71 */
72typedef struct stlport {
73 unsigned long magic;
74 int portnr;
75 int panelnr;
76 int brdnr;
77 int ioaddr;
78 int uartaddr;
79 int pagenr;
80 long istate;
81 int flags;
82 int baud_base;
83 int custom_divisor;
84 int close_delay;
85 int closing_wait;
86 int refcount;
87 int openwaitcnt;
88 int brklen;
89 unsigned int sigs;
90 unsigned int rxignoremsk;
91 unsigned int rxmarkmsk;
92 unsigned int imr;
93 unsigned int crenable;
94 unsigned long clk;
95 unsigned long hwid;
96 void *uartp;
97 struct tty_struct *tty;
98 wait_queue_head_t open_wait;
99 wait_queue_head_t close_wait;
100 struct work_struct tqueue;
101 comstats_t stats;
102 stlrq_t tx;
103} stlport_t;
104
105typedef struct stlpanel {
106 unsigned long magic;
107 int panelnr;
108 int brdnr;
109 int pagenr;
110 int nrports;
111 int iobase;
112 void *uartp;
113 void (*isr)(struct stlpanel *panelp, unsigned int iobase);
114 unsigned int hwid;
115 unsigned int ackmask;
116 stlport_t *ports[STL_PORTSPERPANEL];
117} stlpanel_t;
118
119typedef struct stlbrd {
120 unsigned long magic;
121 int brdnr;
122 int brdtype;
123 int state;
124 int nrpanels;
125 int nrports;
126 int nrbnks;
127 int irq;
128 int irqtype;
129 int (*isr)(struct stlbrd *brdp);
130 unsigned int ioaddr1;
131 unsigned int ioaddr2;
132 unsigned int iosize1;
133 unsigned int iosize2;
134 unsigned int iostatus;
135 unsigned int ioctrl;
136 unsigned int ioctrlval;
137 unsigned int hwid;
138 unsigned long clk;
139 unsigned int bnkpageaddr[STL_MAXBANKS];
140 unsigned int bnkstataddr[STL_MAXBANKS];
141 stlpanel_t *bnk2panel[STL_MAXBANKS];
142 stlpanel_t *panels[STL_MAXPANELS];
143} stlbrd_t;
144
145
146/*
147 * Define MAGIC numbers used for above structures.
148 */
149#define STL_PORTMAGIC 0x5a7182c9
150#define STL_PANELMAGIC 0x7ef621a1
151#define STL_BOARDMAGIC 0xa2267f52
152
153/*****************************************************************************/
154#endif