1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/* $Id: icn.h,v 1.30.6.5 2001/09/23 22:24:55 kai Exp $
*
* ISDN lowlevel-module for the ICN active ISDN-Card.
*
* Copyright 1994 by Fritz Elfert (fritz@isdn4linux.de)
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#ifndef icn_h
#define icn_h
#define ICN_IOCTL_SETMMIO 0
#define ICN_IOCTL_GETMMIO 1
#define ICN_IOCTL_SETPORT 2
#define ICN_IOCTL_GETPORT 3
#define ICN_IOCTL_LOADBOOT 4
#define ICN_IOCTL_LOADPROTO 5
#define ICN_IOCTL_LEASEDCFG 6
#define ICN_IOCTL_GETDOUBLE 7
#define ICN_IOCTL_DEBUGVAR 8
#define ICN_IOCTL_ADDCARD 9
/* Struct for adding new cards */
typedef struct icn_cdef {
int port;
char id1[10];
char id2[10];
} icn_cdef;
#if defined(__KERNEL__) || defined(__DEBUGVAR__)
#ifdef __KERNEL__
/* Kernel includes */
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/ioport.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/delay.h>
#include <linux/isdnif.h>
#endif /* __KERNEL__ */
/* some useful macros for debugging */
#ifdef ICN_DEBUG_PORT
#define OUTB_P(v, p) {printk(KERN_DEBUG "icn: outb_p(0x%02x,0x%03x)\n", v, p); outb_p(v, p);}
#else
#define OUTB_P outb
#endif
/* Defaults for Port-Address and shared-memory */
#define ICN_BASEADDR 0x320
#define ICN_PORTLEN (0x04)
#define ICN_MEMADDR 0x0d0000
#define ICN_FLAGS_B1ACTIVE 1 /* B-Channel-1 is open */
#define ICN_FLAGS_B2ACTIVE 2 /* B-Channel-2 is open */
#define ICN_FLAGS_RUNNING 4 /* Cards driver activated */
#define ICN_FLAGS_RBTIMER 8 /* cyclic scheduling of B-Channel-poll */
#define ICN_BOOT_TIMEOUT1 1000 /* Delay for Boot-download (msecs) */
#define ICN_TIMER_BCREAD (HZ / 100) /* B-Channel poll-cycle */
#define ICN_TIMER_DCREAD (HZ / 2) /* D-Channel poll-cycle */
#define ICN_CODE_STAGE1 4096 /* Size of bootcode */
#define ICN_CODE_STAGE2 65536 /* Size of protocol-code */
#define ICN_MAX_SQUEUE 8000 /* Max. outstanding send-data (2* hw-buf.) */
#define ICN_FRAGSIZE (250) /* Max. size of send-fragments */
#define ICN_BCH 2 /* Number of supported channels per card */
/* type-definitions for accessing the mmap-io-areas */
#define SHM_DCTL_OFFSET (0) /* Offset to data-controlstructures in shm */
#define SHM_CCTL_OFFSET (0x1d2) /* Offset to comm-controlstructures in shm */
#define SHM_CBUF_OFFSET (0x200) /* Offset to comm-buffers in shm */
#define SHM_DBUF_OFFSET (0x2000) /* Offset to data-buffers in shm */
/*
* Layout of card's data buffers
*/
typedef struct {
unsigned char length; /* Bytecount of fragment (max 250) */
unsigned char endflag; /* 0=last frag., 0xff=frag. continued */
unsigned char data[ICN_FRAGSIZE]; /* The data */
/* Fill to 256 bytes */
char unused[0x100 - ICN_FRAGSIZE - 2];
} frag_buf;
/*
* Layout of card's shared memory
*/
typedef union {
struct {
unsigned char scns; /* Index to free SendFrag. */
unsigned char scnr; /* Index to active SendFrag READONLY */
unsigned char ecns; /* Index to free RcvFrag. READONLY */
unsigned char ecnr; /* Index to valid RcvFrag */
char unused[6];
unsigned short fuell1; /* Internal Buf Bytecount */
} data_control;
struct {
char unused[SHM_CCTL_OFFSET];
unsigned char iopc_i; /* Read-Ptr Status-Queue READONLY */
unsigned char iopc_o; /* Write-Ptr Status-Queue */
unsigned char pcio_i; /* Write-Ptr Command-Queue */
unsigned char pcio_o; /* Read-Ptr Command Queue READONLY */
} comm_control;
struct {
char unused[SHM_CBUF_OFFSET];
unsigned char pcio_buf[0x100]; /* Ring-Buffer Command-Queue */
unsigned char iopc_buf[0x100]; /* Ring-Buffer Status-Queue */
} comm_buffers;
struct {
char unused[SHM_DBUF_OFFSET];
frag_buf receive_buf[0x10];
frag_buf send_buf[0x10];
} data_buffers;
} icn_shmem;
/*
* Per card driver data
*/
typedef struct icn_card {
struct icn_card *next; /* Pointer to next device struct */
struct icn_card *other; /* Pointer to other card for ICN4B */
unsigned short port; /* Base-port-address */
int myid; /* Driver-Nr. assigned by linklevel */
int rvalid; /* IO-portregion has been requested */
int leased; /* Flag: This Adapter is connected */
/* to a leased line */
unsigned short flags; /* Statusflags */
int doubleS0; /* Flag: ICN4B */
int secondhalf; /* Flag: Second half of a doubleS0 */
int fw_rev; /* Firmware revision loaded */
int ptype; /* Protocol type (1TR6 or Euro) */
struct timer_list st_timer; /* Timer for Status-Polls */
struct timer_list rb_timer; /* Timer for B-Channel-Polls */
u_char rcvbuf[ICN_BCH][4096]; /* B-Channel-Receive-Buffers */
int rcvidx[ICN_BCH]; /* Index for above buffers */
int l2_proto[ICN_BCH]; /* Current layer-2-protocol */
isdn_if interface; /* Interface to upper layer */
int iptr; /* Index to imsg-buffer */
char imsg[60]; /* Internal buf for status-parsing */
char msg_buf[2048]; /* Buffer for status-messages */
char *msg_buf_write; /* Writepointer for statusbuffer */
char *msg_buf_read; /* Readpointer for statusbuffer */
char *msg_buf_end; /* Pointer to end of statusbuffer */
int sndcount[ICN_BCH]; /* Byte-counters for B-Ch.-send */
int xlen[ICN_BCH]; /* Byte-counters/Flags for sent-ACK */
struct sk_buff *xskb[ICN_BCH]; /* Current transmitted skb */
struct sk_buff_head spqueue[ICN_BCH]; /* Sendqueue */
char regname[35]; /* Name used for request_region */
u_char xmit_lock[ICN_BCH]; /* Semaphore for pollbchan_send()*/
spinlock_t lock; /* protect critical operations */
} icn_card;
/*
* Main driver data
*/
typedef struct icn_dev {
spinlock_t devlock; /* spinlock to protect this struct */
unsigned long memaddr; /* Address of memory mapped buffers */
icn_shmem __iomem *shmem; /* Pointer to memory-mapped-buffers */
int mvalid; /* IO-shmem has been requested */
int channel; /* Currently mapped channel */
struct icn_card *mcard; /* Currently mapped card */
int chanlock; /* Semaphore for channel-mapping */
int firstload; /* Flag: firmware never loaded */
} icn_dev;
typedef icn_dev *icn_devptr;
#ifdef __KERNEL__
static icn_card *cards = (icn_card *) 0;
static u_char chan2bank[] =
{0, 4, 8, 12}; /* for icn_map_channel() */
static icn_dev dev;
#endif /* __KERNEL__ */
/* Utility-Macros */
/* Macros for accessing ports */
#define ICN_CFG (card->port)
#define ICN_MAPRAM (card->port + 1)
#define ICN_RUN (card->port + 2)
#define ICN_BANK (card->port + 3)
/* Return true, if there is a free transmit-buffer */
#define sbfree (((readb(&dev.shmem->data_control.scns) + 1) & 0xf) != \
readb(&dev.shmem->data_control.scnr))
/* Switch to next transmit-buffer */
#define sbnext (writeb((readb(&dev.shmem->data_control.scns) + 1) & 0xf, \
&dev.shmem->data_control.scns))
/* Shortcuts for transmit-buffer-access */
#define sbuf_n dev.shmem->data_control.scns
#define sbuf_d dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].data
#define sbuf_l dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].length
#define sbuf_f dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].endflag
/* Return true, if there is receive-data is available */
#define rbavl (readb(&dev.shmem->data_control.ecnr) != \
readb(&dev.shmem->data_control.ecns))
/* Switch to next receive-buffer */
#define rbnext (writeb((readb(&dev.shmem->data_control.ecnr) + 1) & 0xf, \
&dev.shmem->data_control.ecnr))
/* Shortcuts for receive-buffer-access */
#define rbuf_n dev.shmem->data_control.ecnr
#define rbuf_d dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].data
#define rbuf_l dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].length
#define rbuf_f dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].endflag
/* Shortcuts for command-buffer-access */
#define cmd_o (dev.shmem->comm_control.pcio_o)
#define cmd_i (dev.shmem->comm_control.pcio_i)
/* Return free space in command-buffer */
#define cmd_free ((readb(&cmd_i) >= readb(&cmd_o)) ? \
0x100 - readb(&cmd_i) + readb(&cmd_o) : \
readb(&cmd_o) - readb(&cmd_i))
/* Shortcuts for message-buffer-access */
#define msg_o (dev.shmem->comm_control.iopc_o)
#define msg_i (dev.shmem->comm_control.iopc_i)
/* Return length of Message, if avail. */
#define msg_avail ((readb(&msg_o) > readb(&msg_i)) ? \
0x100 - readb(&msg_o) + readb(&msg_i) : \
readb(&msg_i) - readb(&msg_o))
#define CID (card->interface.id)
#endif /* defined(__KERNEL__) || defined(__DEBUGVAR__) */
#endif /* icn_h */
|
