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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
25#define BANK2 0x01ffU
26#define BANK3 0x03feU
27#define BANK4 0x03ffU
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
39#define PREHDR_LEN 8
40
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
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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
113
114struct 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
124extern int pcbit_l2_write(struct pcbit_dev * dev, ulong msg, ushort refnum,
125 struct sk_buff *skb, unsigned short hdr_len);
126
127extern irqreturn_t pcbit_irq_handler(int interrupt, void *);
128
129extern struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS];
130
131#ifdef DEBUG
132static __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
142static __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
156static __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
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170
171
172
173static __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
180static __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
202static __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
225static __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
236static __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
260static __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
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