1 /*
2 * PCBIT-D low-layer interface definitions
3 *
4 * Copyright (C) 1996 Universidade de Lisboa
5 *
6 * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
7 *
8 * This software may be used and distributed according to the terms of
9 * the GNU General Public License, incorporated herein by reference.
10 */
11
12 /*
13 * 19991203 - Fernando Carvalho - takion@superbofh.org
14 * Hacked to compile with egcs and run with current version of isdn modules
15 */
16
17 #ifndef LAYER2_H
18 #define LAYER2_H
19
20 #include <linux/interrupt.h>
21
22 #include <asm/byteorder.h>
23
24 #define BANK1 0x0000U /* PC -> Board */
25 #define BANK2 0x01ffU /* Board -> PC */
26 #define BANK3 0x03feU /* Att Board */
27 #define BANK4 0x03ffU /* Att PC */
28
29 #define BANKLEN 0x01FFU
30
31 #define LOAD_ZONE_START 0x03f8U
32 #define LOAD_ZONE_END 0x03fdU
33
34 #define LOAD_RETRY 18000000
35
36
37
38 /* TAM - XX - C - S - NUM */
39 #define PREHDR_LEN 8
40 /* TT - M - I - TH - TD */
41 #define FRAME_HDR_LEN 8
42
43 #define MSG_CONN_REQ 0x08000100
44 #define MSG_CONN_CONF 0x00000101
45 #define MSG_CONN_IND 0x00000102
46 #define MSG_CONN_RESP 0x08000103
47
48 #define MSG_CONN_ACTV_REQ 0x08000300
49 #define MSG_CONN_ACTV_CONF 0x00000301
50 #define MSG_CONN_ACTV_IND 0x00000302
51 #define MSG_CONN_ACTV_RESP 0x08000303
52
53 #define MSG_DISC_REQ 0x08000400
54 #define MSG_DISC_CONF 0x00000401
55 #define MSG_DISC_IND 0x00000402
56 #define MSG_DISC_RESP 0x08000403
57
58 #define MSG_TDATA_REQ 0x0908E200
59 #define MSG_TDATA_CONF 0x0000E201
60 #define MSG_TDATA_IND 0x0000E202
61 #define MSG_TDATA_RESP 0x0908E203
62
63 #define MSG_SELP_REQ 0x09004000
64 #define MSG_SELP_CONF 0x00004001
65
66 #define MSG_ACT_TRANSP_REQ 0x0908E000
67 #define MSG_ACT_TRANSP_CONF 0x0000E001
68
69 #define MSG_STPROT_REQ 0x09004100
70 #define MSG_STPROT_CONF 0x00004101
71
72 #define MSG_PING188_REQ 0x09030500
73 #define MSG_PING188_CONF 0x000005bc
74
75 #define MSG_WATCH188 0x09030400
76
77 #define MSG_API_ON 0x08020102
78 #define MSG_POOL_PCBIT 0x08020400
79 #define MSG_POOL_PCBIT_CONF 0x00000401
80
81 #define MSG_INFO_IND 0x00002602
82 #define MSG_INFO_RESP 0x08002603
83
84 #define MSG_DEBUG_188 0x0000ff00
85
86 /*
87
88 long 4 3 2 1
89 Intel 1 2 3 4
90 */
91
92 #ifdef __LITTLE_ENDIAN
93 #define SET_MSG_SCMD(msg, ch) (msg = (msg & 0xffffff00) | (((ch) & 0xff)))
94 #define SET_MSG_CMD(msg, ch) (msg = (msg & 0xffff00ff) | (((ch) & 0xff) << 8))
95 #define SET_MSG_PROC(msg, ch) (msg = (msg & 0xff00ffff) | (((ch) & 0xff) << 16))
96 #define SET_MSG_CPU(msg, ch) (msg = (msg & 0x00ffffff) | (((ch) & 0xff) << 24))
97
98 #define GET_MSG_SCMD(msg) ((msg) & 0xFF)
99 #define GET_MSG_CMD(msg) ((msg) >> 8 & 0xFF)
100 #define GET_MSG_PROC(msg) ((msg) >> 16 & 0xFF)
101 #define GET_MSG_CPU(msg) ((msg) >> 24)
102
103 #else
104 #error "Non-Intel CPU"
105 #endif
106
107 #define MAX_QUEUED 7
108
109 #define SCHED_READ 0x01
110 #define SCHED_WRITE 0x02
111
112 #define SET_RUN_TIMEOUT 2*HZ /* 2 seconds */
113
114 struct frame_buf {
115 ulong msg;
116 unsigned int refnum;
117 unsigned int dt_len;
118 unsigned int hdr_len;
119 struct sk_buff *skb;
120 unsigned int copied;
121 struct frame_buf * next;
122 };
123
124 extern int pcbit_l2_write(struct pcbit_dev * dev, ulong msg, ushort refnum,
125 struct sk_buff *skb, unsigned short hdr_len);
126
127 extern irqreturn_t pcbit_irq_handler(int interrupt, void *);
128
129 extern struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
130
131 #ifdef DEBUG
132 static __inline__ void log_state(struct pcbit_dev *dev) {
133 printk(KERN_DEBUG "writeptr = %ld\n",
134 (ulong) (dev->writeptr - dev->sh_mem));
135 printk(KERN_DEBUG "readptr = %ld\n",
136 (ulong) (dev->readptr - (dev->sh_mem + BANK2)));
137 printk(KERN_DEBUG "{rcv_seq=%01x, send_seq=%01x, unack_seq=%01x}\n",
138 dev->rcv_seq, dev->send_seq, dev->unack_seq);
139 }
140 #endif
141
142 static __inline__ struct pcbit_dev * chan2dev(struct pcbit_chan * chan)
143 {
144 struct pcbit_dev * dev;
145 int i;
146
147
148 for (i=0; i<MAX_PCBIT_CARDS; i++)
149 if ((dev=dev_pcbit[i]))
150 if (dev->b1 == chan || dev->b2 == chan)
151 return dev;
152 return NULL;
153
154 }
155
156 static __inline__ struct pcbit_dev * finddev(int id)
157 {
158 struct pcbit_dev * dev;
159 int i;
160
161 for (i=0; i<MAX_PCBIT_CARDS; i++)
162 if ((dev=dev_pcbit[i]))
163 if (dev->id == id)
164 return dev;
165 return NULL;
166 }
167
168
169 /*
170 * Support routines for reading and writing in the board
171 */
172
173 static __inline__ void pcbit_writeb(struct pcbit_dev *dev, unsigned char dt)
174 {
175 writeb(dt, dev->writeptr++);
176 if (dev->writeptr == dev->sh_mem + BANKLEN)
177 dev->writeptr = dev->sh_mem;
178 }
179
180 static __inline__ void pcbit_writew(struct pcbit_dev *dev, unsigned short dt)
181 {
182 int dist;
183
184 dist = BANKLEN - (dev->writeptr - dev->sh_mem);
185 switch (dist) {
186 case 2:
187 writew(dt, dev->writeptr);
188 dev->writeptr = dev->sh_mem;
189 break;
190 case 1:
191 writeb((u_char) (dt & 0x00ffU), dev->writeptr);
192 dev->writeptr = dev->sh_mem;
193 writeb((u_char) (dt >> 8), dev->writeptr++);
194 break;
195 default:
196 writew(dt, dev->writeptr);
197 dev->writeptr += 2;
198 break;
199 };
200 }
201
202 static __inline__ void memcpy_topcbit(struct pcbit_dev * dev, u_char * data,
203 int len)
204 {
205 int diff;
206
207 diff = len - (BANKLEN - (dev->writeptr - dev->sh_mem) );
208
209 if (diff > 0)
210 {
211 memcpy_toio(dev->writeptr, data, len - diff);
212 memcpy_toio(dev->sh_mem, data + (len - diff), diff);
213 dev->writeptr = dev->sh_mem + diff;
214 }
215 else
216 {
217 memcpy_toio(dev->writeptr, data, len);
218
219 dev->writeptr += len;
220 if (diff == 0)
221 dev->writeptr = dev->sh_mem;
222 }
223 }
224
225 static __inline__ unsigned char pcbit_readb(struct pcbit_dev *dev)
226 {
227 unsigned char val;
228
229 val = readb(dev->readptr++);
230 if (dev->readptr == dev->sh_mem + BANK2 + BANKLEN)
231 dev->readptr = dev->sh_mem + BANK2;
232
233 return val;
234 }
235
236 static __inline__ unsigned short pcbit_readw(struct pcbit_dev *dev)
237 {
238 int dist;
239 unsigned short val;
240
241 dist = BANKLEN - ( dev->readptr - (dev->sh_mem + BANK2 ) );
242 switch (dist) {
243 case 2:
244 val = readw(dev->readptr);
245 dev->readptr = dev->sh_mem + BANK2;
246 break;
247 case 1:
248 val = readb(dev->readptr);
249 dev->readptr = dev->sh_mem + BANK2;
250 val = (readb(dev->readptr++) << 8) | val;
251 break;
252 default:
253 val = readw(dev->readptr);
254 dev->readptr += 2;
255 break;
256 };
257 return val;
258 }
259
260 static __inline__ void memcpy_frompcbit(struct pcbit_dev * dev, u_char * data, int len)
261 {
262 int diff;
263
264 diff = len - (BANKLEN - (dev->readptr - (dev->sh_mem + BANK2) ) );
265 if (diff > 0)
266 {
267 memcpy_fromio(data, dev->readptr, len - diff);
268 memcpy_fromio(data + (len - diff), dev->sh_mem + BANK2 , diff);
269 dev->readptr = dev->sh_mem + BANK2 + diff;
270 }
271 else
272 {
273 memcpy_fromio(data, dev->readptr, len);
274 dev->readptr += len;
275 if (diff == 0)
276 dev->readptr = dev->sh_mem + BANK2;
277 }
278 }
279
280
281 #endif
282
283
284
285
286
287
288
289
|
This page was automatically generated by the
LXR engine.
|