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 */
55 struct 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 */
70 struct 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
98 struct 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
112 struct 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
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