diff options
Diffstat (limited to 'drivers/isdn/pcbit/layer2.h')
-rw-r--r-- | drivers/isdn/pcbit/layer2.h | 265 |
1 files changed, 129 insertions, 136 deletions
diff --git a/drivers/isdn/pcbit/layer2.h b/drivers/isdn/pcbit/layer2.h index 2ac295e1a6e5..be1327bc162a 100644 --- a/drivers/isdn/pcbit/layer2.h +++ b/drivers/isdn/pcbit/layer2.h | |||
@@ -2,17 +2,17 @@ | |||
2 | * PCBIT-D low-layer interface definitions | 2 | * PCBIT-D low-layer interface definitions |
3 | * | 3 | * |
4 | * Copyright (C) 1996 Universidade de Lisboa | 4 | * Copyright (C) 1996 Universidade de Lisboa |
5 | * | 5 | * |
6 | * Written by Pedro Roque Marques (roque@di.fc.ul.pt) | 6 | * Written by Pedro Roque Marques (roque@di.fc.ul.pt) |
7 | * | 7 | * |
8 | * This software may be used and distributed according to the terms of | 8 | * This software may be used and distributed according to the terms of |
9 | * the GNU General Public License, incorporated herein by reference. | 9 | * the GNU General Public License, incorporated herein by reference. |
10 | */ | 10 | */ |
11 | 11 | ||
12 | /* | 12 | /* |
13 | * 19991203 - Fernando Carvalho - takion@superbofh.org | 13 | * 19991203 - Fernando Carvalho - takion@superbofh.org |
14 | * Hacked to compile with egcs and run with current version of isdn modules | 14 | * Hacked to compile with egcs and run with current version of isdn modules |
15 | */ | 15 | */ |
16 | 16 | ||
17 | #ifndef LAYER2_H | 17 | #ifndef LAYER2_H |
18 | #define LAYER2_H | 18 | #define LAYER2_H |
@@ -37,8 +37,8 @@ | |||
37 | 37 | ||
38 | /* TAM - XX - C - S - NUM */ | 38 | /* TAM - XX - C - S - NUM */ |
39 | #define PREHDR_LEN 8 | 39 | #define PREHDR_LEN 8 |
40 | /* TT - M - I - TH - TD */ | 40 | /* TT - M - I - TH - TD */ |
41 | #define FRAME_HDR_LEN 8 | 41 | #define FRAME_HDR_LEN 8 |
42 | 42 | ||
43 | #define MSG_CONN_REQ 0x08000100 | 43 | #define MSG_CONN_REQ 0x08000100 |
44 | #define MSG_CONN_CONF 0x00000101 | 44 | #define MSG_CONN_CONF 0x00000101 |
@@ -84,21 +84,21 @@ | |||
84 | #define MSG_DEBUG_188 0x0000ff00 | 84 | #define MSG_DEBUG_188 0x0000ff00 |
85 | 85 | ||
86 | /* | 86 | /* |
87 | 87 | ||
88 | long 4 3 2 1 | 88 | long 4 3 2 1 |
89 | Intel 1 2 3 4 | 89 | Intel 1 2 3 4 |
90 | */ | 90 | */ |
91 | 91 | ||
92 | #ifdef __LITTLE_ENDIAN | 92 | #ifdef __LITTLE_ENDIAN |
93 | #define SET_MSG_SCMD(msg, ch) (msg = (msg & 0xffffff00) | (((ch) & 0xff))) | 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)) | 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)) | 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)) | 96 | #define SET_MSG_CPU(msg, ch) (msg = (msg & 0x00ffffff) | (((ch) & 0xff) << 24)) |
97 | 97 | ||
98 | #define GET_MSG_SCMD(msg) ((msg) & 0xFF) | 98 | #define GET_MSG_SCMD(msg) ((msg) & 0xFF) |
99 | #define GET_MSG_CMD(msg) ((msg) >> 8 & 0xFF) | 99 | #define GET_MSG_CMD(msg) ((msg) >> 8 & 0xFF) |
100 | #define GET_MSG_PROC(msg) ((msg) >> 16 & 0xFF) | 100 | #define GET_MSG_PROC(msg) ((msg) >> 16 & 0xFF) |
101 | #define GET_MSG_CPU(msg) ((msg) >> 24) | 101 | #define GET_MSG_CPU(msg) ((msg) >> 24) |
102 | 102 | ||
103 | #else | 103 | #else |
104 | #error "Non-Intel CPU" | 104 | #error "Non-Intel CPU" |
@@ -109,60 +109,60 @@ | |||
109 | #define SCHED_READ 0x01 | 109 | #define SCHED_READ 0x01 |
110 | #define SCHED_WRITE 0x02 | 110 | #define SCHED_WRITE 0x02 |
111 | 111 | ||
112 | #define SET_RUN_TIMEOUT 2*HZ /* 2 seconds */ | 112 | #define SET_RUN_TIMEOUT 2 * HZ /* 2 seconds */ |
113 | 113 | ||
114 | struct frame_buf { | 114 | struct frame_buf { |
115 | ulong msg; | 115 | ulong msg; |
116 | unsigned int refnum; | 116 | unsigned int refnum; |
117 | unsigned int dt_len; | 117 | unsigned int dt_len; |
118 | unsigned int hdr_len; | 118 | unsigned int hdr_len; |
119 | struct sk_buff *skb; | 119 | struct sk_buff *skb; |
120 | unsigned int copied; | 120 | unsigned int copied; |
121 | struct frame_buf * next; | 121 | struct frame_buf *next; |
122 | }; | 122 | }; |
123 | 123 | ||
124 | extern int pcbit_l2_write(struct pcbit_dev * dev, ulong msg, ushort refnum, | 124 | extern int pcbit_l2_write(struct pcbit_dev *dev, ulong msg, ushort refnum, |
125 | struct sk_buff *skb, unsigned short hdr_len); | 125 | struct sk_buff *skb, unsigned short hdr_len); |
126 | 126 | ||
127 | extern irqreturn_t pcbit_irq_handler(int interrupt, void *); | 127 | extern irqreturn_t pcbit_irq_handler(int interrupt, void *); |
128 | 128 | ||
129 | extern struct pcbit_dev * dev_pcbit[MAX_PCBIT_CARDS]; | 129 | extern struct pcbit_dev *dev_pcbit[MAX_PCBIT_CARDS]; |
130 | 130 | ||
131 | #ifdef DEBUG | 131 | #ifdef DEBUG |
132 | static __inline__ void log_state(struct pcbit_dev *dev) { | 132 | static __inline__ void log_state(struct pcbit_dev *dev) { |
133 | printk(KERN_DEBUG "writeptr = %ld\n", | 133 | printk(KERN_DEBUG "writeptr = %ld\n", |
134 | (ulong) (dev->writeptr - dev->sh_mem)); | 134 | (ulong) (dev->writeptr - dev->sh_mem)); |
135 | printk(KERN_DEBUG "readptr = %ld\n", | 135 | printk(KERN_DEBUG "readptr = %ld\n", |
136 | (ulong) (dev->readptr - (dev->sh_mem + BANK2))); | 136 | (ulong) (dev->readptr - (dev->sh_mem + BANK2))); |
137 | printk(KERN_DEBUG "{rcv_seq=%01x, send_seq=%01x, unack_seq=%01x}\n", | 137 | printk(KERN_DEBUG "{rcv_seq=%01x, send_seq=%01x, unack_seq=%01x}\n", |
138 | dev->rcv_seq, dev->send_seq, dev->unack_seq); | 138 | dev->rcv_seq, dev->send_seq, dev->unack_seq); |
139 | } | 139 | } |
140 | #endif | 140 | #endif |
141 | 141 | ||
142 | static __inline__ struct pcbit_dev * chan2dev(struct pcbit_chan * chan) | 142 | static __inline__ struct pcbit_dev *chan2dev(struct pcbit_chan *chan) |
143 | { | 143 | { |
144 | struct pcbit_dev * dev; | 144 | struct pcbit_dev *dev; |
145 | int i; | 145 | int i; |
146 | 146 | ||
147 | 147 | ||
148 | for (i=0; i<MAX_PCBIT_CARDS; i++) | 148 | for (i = 0; i < MAX_PCBIT_CARDS; i++) |
149 | if ((dev=dev_pcbit[i])) | 149 | if ((dev = dev_pcbit[i])) |
150 | if (dev->b1 == chan || dev->b2 == chan) | 150 | if (dev->b1 == chan || dev->b2 == chan) |
151 | return dev; | 151 | return dev; |
152 | return NULL; | 152 | return NULL; |
153 | 153 | ||
154 | } | 154 | } |
155 | 155 | ||
156 | static __inline__ struct pcbit_dev * finddev(int id) | 156 | static __inline__ struct pcbit_dev *finddev(int id) |
157 | { | 157 | { |
158 | struct pcbit_dev * dev; | 158 | struct pcbit_dev *dev; |
159 | int i; | 159 | int i; |
160 | 160 | ||
161 | for (i=0; i<MAX_PCBIT_CARDS; i++) | 161 | for (i = 0; i < MAX_PCBIT_CARDS; i++) |
162 | if ((dev=dev_pcbit[i])) | 162 | if ((dev = dev_pcbit[i])) |
163 | if (dev->id == id) | 163 | if (dev->id == id) |
164 | return dev; | 164 | return dev; |
165 | return NULL; | 165 | return NULL; |
166 | } | 166 | } |
167 | 167 | ||
168 | 168 | ||
@@ -172,117 +172,110 @@ static __inline__ struct pcbit_dev * finddev(int id) | |||
172 | 172 | ||
173 | static __inline__ void pcbit_writeb(struct pcbit_dev *dev, unsigned char dt) | 173 | static __inline__ void pcbit_writeb(struct pcbit_dev *dev, unsigned char dt) |
174 | { | 174 | { |
175 | writeb(dt, dev->writeptr++); | 175 | writeb(dt, dev->writeptr++); |
176 | if (dev->writeptr == dev->sh_mem + BANKLEN) | 176 | if (dev->writeptr == dev->sh_mem + BANKLEN) |
177 | dev->writeptr = dev->sh_mem; | 177 | dev->writeptr = dev->sh_mem; |
178 | } | 178 | } |
179 | 179 | ||
180 | static __inline__ void pcbit_writew(struct pcbit_dev *dev, unsigned short dt) | 180 | static __inline__ void pcbit_writew(struct pcbit_dev *dev, unsigned short dt) |
181 | { | 181 | { |
182 | int dist; | 182 | int dist; |
183 | 183 | ||
184 | dist = BANKLEN - (dev->writeptr - dev->sh_mem); | 184 | dist = BANKLEN - (dev->writeptr - dev->sh_mem); |
185 | switch (dist) { | 185 | switch (dist) { |
186 | case 2: | 186 | case 2: |
187 | writew(dt, dev->writeptr); | 187 | writew(dt, dev->writeptr); |
188 | dev->writeptr = dev->sh_mem; | 188 | dev->writeptr = dev->sh_mem; |
189 | break; | 189 | break; |
190 | case 1: | 190 | case 1: |
191 | writeb((u_char) (dt & 0x00ffU), dev->writeptr); | 191 | writeb((u_char) (dt & 0x00ffU), dev->writeptr); |
192 | dev->writeptr = dev->sh_mem; | 192 | dev->writeptr = dev->sh_mem; |
193 | writeb((u_char) (dt >> 8), dev->writeptr++); | 193 | writeb((u_char) (dt >> 8), dev->writeptr++); |
194 | break; | 194 | break; |
195 | default: | 195 | default: |
196 | writew(dt, dev->writeptr); | 196 | writew(dt, dev->writeptr); |
197 | dev->writeptr += 2; | 197 | dev->writeptr += 2; |
198 | break; | 198 | break; |
199 | }; | 199 | }; |
200 | } | 200 | } |
201 | 201 | ||
202 | static __inline__ void memcpy_topcbit(struct pcbit_dev * dev, u_char * data, | 202 | static __inline__ void memcpy_topcbit(struct pcbit_dev *dev, u_char *data, |
203 | int len) | 203 | int len) |
204 | { | 204 | { |
205 | int diff; | 205 | int diff; |
206 | 206 | ||
207 | diff = len - (BANKLEN - (dev->writeptr - dev->sh_mem) ); | 207 | diff = len - (BANKLEN - (dev->writeptr - dev->sh_mem)); |
208 | 208 | ||
209 | if (diff > 0) | 209 | if (diff > 0) |
210 | { | 210 | { |
211 | memcpy_toio(dev->writeptr, data, len - diff); | 211 | memcpy_toio(dev->writeptr, data, len - diff); |
212 | memcpy_toio(dev->sh_mem, data + (len - diff), diff); | 212 | memcpy_toio(dev->sh_mem, data + (len - diff), diff); |
213 | dev->writeptr = dev->sh_mem + diff; | 213 | dev->writeptr = dev->sh_mem + diff; |
214 | } | 214 | } |
215 | else | 215 | else |
216 | { | 216 | { |
217 | memcpy_toio(dev->writeptr, data, len); | 217 | memcpy_toio(dev->writeptr, data, len); |
218 | 218 | ||
219 | dev->writeptr += len; | 219 | dev->writeptr += len; |
220 | if (diff == 0) | 220 | if (diff == 0) |
221 | dev->writeptr = dev->sh_mem; | 221 | dev->writeptr = dev->sh_mem; |
222 | } | 222 | } |
223 | } | 223 | } |
224 | 224 | ||
225 | static __inline__ unsigned char pcbit_readb(struct pcbit_dev *dev) | 225 | static __inline__ unsigned char pcbit_readb(struct pcbit_dev *dev) |
226 | { | 226 | { |
227 | unsigned char val; | 227 | unsigned char val; |
228 | 228 | ||
229 | val = readb(dev->readptr++); | 229 | val = readb(dev->readptr++); |
230 | if (dev->readptr == dev->sh_mem + BANK2 + BANKLEN) | 230 | if (dev->readptr == dev->sh_mem + BANK2 + BANKLEN) |
231 | dev->readptr = dev->sh_mem + BANK2; | 231 | dev->readptr = dev->sh_mem + BANK2; |
232 | 232 | ||
233 | return val; | 233 | return val; |
234 | } | 234 | } |
235 | 235 | ||
236 | static __inline__ unsigned short pcbit_readw(struct pcbit_dev *dev) | 236 | static __inline__ unsigned short pcbit_readw(struct pcbit_dev *dev) |
237 | { | 237 | { |
238 | int dist; | 238 | int dist; |
239 | unsigned short val; | 239 | unsigned short val; |
240 | 240 | ||
241 | dist = BANKLEN - ( dev->readptr - (dev->sh_mem + BANK2 ) ); | 241 | dist = BANKLEN - (dev->readptr - (dev->sh_mem + BANK2)); |
242 | switch (dist) { | 242 | switch (dist) { |
243 | case 2: | 243 | case 2: |
244 | val = readw(dev->readptr); | 244 | val = readw(dev->readptr); |
245 | dev->readptr = dev->sh_mem + BANK2; | 245 | dev->readptr = dev->sh_mem + BANK2; |
246 | break; | 246 | break; |
247 | case 1: | 247 | case 1: |
248 | val = readb(dev->readptr); | 248 | val = readb(dev->readptr); |
249 | dev->readptr = dev->sh_mem + BANK2; | 249 | dev->readptr = dev->sh_mem + BANK2; |
250 | val = (readb(dev->readptr++) << 8) | val; | 250 | val = (readb(dev->readptr++) << 8) | val; |
251 | break; | 251 | break; |
252 | default: | 252 | default: |
253 | val = readw(dev->readptr); | 253 | val = readw(dev->readptr); |
254 | dev->readptr += 2; | 254 | dev->readptr += 2; |
255 | break; | 255 | break; |
256 | }; | 256 | }; |
257 | return val; | 257 | return val; |
258 | } | 258 | } |
259 | 259 | ||
260 | static __inline__ void memcpy_frompcbit(struct pcbit_dev * dev, u_char * data, int len) | 260 | static __inline__ void memcpy_frompcbit(struct pcbit_dev *dev, u_char *data, int len) |
261 | { | 261 | { |
262 | int diff; | 262 | int diff; |
263 | 263 | ||
264 | diff = len - (BANKLEN - (dev->readptr - (dev->sh_mem + BANK2) ) ); | 264 | diff = len - (BANKLEN - (dev->readptr - (dev->sh_mem + BANK2))); |
265 | if (diff > 0) | 265 | if (diff > 0) |
266 | { | 266 | { |
267 | memcpy_fromio(data, dev->readptr, len - diff); | 267 | memcpy_fromio(data, dev->readptr, len - diff); |
268 | memcpy_fromio(data + (len - diff), dev->sh_mem + BANK2 , diff); | 268 | memcpy_fromio(data + (len - diff), dev->sh_mem + BANK2 , diff); |
269 | dev->readptr = dev->sh_mem + BANK2 + diff; | 269 | dev->readptr = dev->sh_mem + BANK2 + diff; |
270 | } | 270 | } |
271 | else | 271 | else |
272 | { | 272 | { |
273 | memcpy_fromio(data, dev->readptr, len); | 273 | memcpy_fromio(data, dev->readptr, len); |
274 | dev->readptr += len; | 274 | dev->readptr += len; |
275 | if (diff == 0) | 275 | if (diff == 0) |
276 | dev->readptr = dev->sh_mem + BANK2; | 276 | dev->readptr = dev->sh_mem + BANK2; |
277 | } | 277 | } |
278 | } | 278 | } |
279 | 279 | ||
280 | 280 | ||
281 | #endif | 281 | #endif |
282 | |||
283 | |||
284 | |||
285 | |||
286 | |||
287 | |||
288 | |||