Commit | Line | Data |
---|---|---|
3c66a225 HL |
1 | /* |
2 | * Stuff used by all variants of the driver | |
3 | * | |
70440cf2 TS |
4 | * Copyright (c) 2001 by Stefan Eilers, |
5 | * Hansjoerg Lipp <hjlipp@web.de>, | |
6 | * Tilman Schmidt <tilman@imap.cc>. | |
3c66a225 HL |
7 | * |
8 | * ===================================================================== | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License as | |
11 | * published by the Free Software Foundation; either version 2 of | |
12 | * the License, or (at your option) any later version. | |
13 | * ===================================================================== | |
3c66a225 HL |
14 | */ |
15 | ||
16 | #include "gigaset.h" | |
088ec0cc | 17 | #include <linux/isdnif.h> |
5d76fc21 | 18 | #include <linux/export.h> |
088ec0cc | 19 | |
e7752ee2 TS |
20 | #define SBUFSIZE 4096 /* sk_buff payload size */ |
21 | #define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */ | |
088ec0cc | 22 | #define HW_HDR_LEN 2 /* Header size used to store ack info */ |
e7752ee2 | 23 | #define MAX_BUF_SIZE (SBUFSIZE - HW_HDR_LEN) /* max data packet from LL */ |
3c66a225 | 24 | |
784d5858 | 25 | /* == Handling of I4L IO =====================================================*/ |
3c66a225 HL |
26 | |
27 | /* writebuf_from_LL | |
28 | * called by LL to transmit data on an open channel | |
29 | * inserts the buffer data into the send queue and starts the transmission | |
30 | * Note that this operation must not sleep! | |
31 | * When the buffer is processed completely, gigaset_skb_sent() should be called. | |
32 | * parameters: | |
33 | * driverID driver ID as assigned by LL | |
34 | * channel channel number | |
917f5085 TS |
35 | * ack if != 0 LL wants to be notified on completion via |
36 | * statcallb(ISDN_STAT_BSENT) | |
3c66a225 HL |
37 | * skb skb containing data to send |
38 | * return value: | |
39 | * number of accepted bytes | |
40 | * 0 if temporarily unable to accept data (out of buffer space) | |
41 | * <0 on error (eg. -EINVAL) | |
42 | */ | |
784d5858 TS |
43 | static int writebuf_from_LL(int driverID, int channel, int ack, |
44 | struct sk_buff *skb) | |
3c66a225 | 45 | { |
d9ba9c91 | 46 | struct cardstate *cs = gigaset_get_cs_by_id(driverID); |
3c66a225 | 47 | struct bc_state *bcs; |
4dd8230a | 48 | unsigned char *ack_header; |
3c66a225 | 49 | unsigned len; |
3c66a225 | 50 | |
d9ba9c91 | 51 | if (!cs) { |
c8770dca | 52 | pr_err("%s: invalid driver ID (%d)\n", __func__, driverID); |
3c66a225 HL |
53 | return -ENODEV; |
54 | } | |
55 | if (channel < 0 || channel >= cs->channels) { | |
5002779d TS |
56 | dev_err(cs->dev, "%s: invalid channel ID (%d)\n", |
57 | __func__, channel); | |
3c66a225 HL |
58 | return -ENODEV; |
59 | } | |
60 | bcs = &cs->bcs[channel]; | |
ee239d99 TS |
61 | |
62 | /* can only handle linear sk_buffs */ | |
63 | if (skb_linearize(skb) < 0) { | |
64 | dev_err(cs->dev, "%s: skb_linearize failed\n", __func__); | |
65 | return -ENOMEM; | |
66 | } | |
3c66a225 HL |
67 | len = skb->len; |
68 | ||
784d5858 TS |
69 | gig_dbg(DEBUG_LLDATA, |
70 | "Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)", | |
71 | driverID, channel, ack, len); | |
72 | ||
3c66a225 HL |
73 | if (!len) { |
74 | if (ack) | |
5002779d TS |
75 | dev_notice(cs->dev, "%s: not ACKing empty packet\n", |
76 | __func__); | |
3c66a225 HL |
77 | return 0; |
78 | } | |
79 | if (len > MAX_BUF_SIZE) { | |
5002779d TS |
80 | dev_err(cs->dev, "%s: packet too large (%d bytes)\n", |
81 | __func__, len); | |
3c66a225 HL |
82 | return -EINVAL; |
83 | } | |
84 | ||
4dd8230a TS |
85 | /* set up acknowledgement header */ |
86 | if (skb_headroom(skb) < HW_HDR_LEN) { | |
87 | /* should never happen */ | |
88 | dev_err(cs->dev, "%s: insufficient skb headroom\n", __func__); | |
89 | return -ENOMEM; | |
90 | } | |
91 | skb_set_mac_header(skb, -HW_HDR_LEN); | |
92 | skb->mac_len = HW_HDR_LEN; | |
93 | ack_header = skb_mac_header(skb); | |
94 | if (ack) { | |
95 | ack_header[0] = len & 0xff; | |
96 | ack_header[1] = len >> 8; | |
97 | } else { | |
98 | ack_header[0] = ack_header[1] = 0; | |
99 | } | |
100 | gig_dbg(DEBUG_MCMD, "skb: len=%u, ack=%d: %02x %02x", | |
101 | len, ack, ack_header[0], ack_header[1]); | |
3c66a225 HL |
102 | |
103 | /* pass to device-specific module */ | |
73a88814 | 104 | return cs->ops->send_skb(bcs, skb); |
3c66a225 HL |
105 | } |
106 | ||
1cec9727 TS |
107 | /** |
108 | * gigaset_skb_sent() - acknowledge sending an skb | |
109 | * @bcs: B channel descriptor structure. | |
110 | * @skb: sent data. | |
111 | * | |
112 | * Called by hardware module {bas,ser,usb}_gigaset when the data in a | |
113 | * skb has been successfully sent, for signalling completion to the LL. | |
114 | */ | |
3c66a225 HL |
115 | void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb) |
116 | { | |
088ec0cc | 117 | isdn_if *iif = bcs->cs->iif; |
4dd8230a | 118 | unsigned char *ack_header = skb_mac_header(skb); |
3c66a225 HL |
119 | unsigned len; |
120 | isdn_ctrl response; | |
121 | ||
122 | ++bcs->trans_up; | |
123 | ||
124 | if (skb->len) | |
784d5858 TS |
125 | dev_warn(bcs->cs->dev, "%s: skb->len==%d\n", |
126 | __func__, skb->len); | |
3c66a225 | 127 | |
4dd8230a | 128 | len = ack_header[0] + ((unsigned) ack_header[1] << 8); |
3c66a225 | 129 | if (len) { |
784d5858 TS |
130 | gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)", |
131 | bcs->cs->myid, bcs->channel, len); | |
3c66a225 HL |
132 | |
133 | response.driver = bcs->cs->myid; | |
134 | response.command = ISDN_STAT_BSENT; | |
135 | response.arg = bcs->channel; | |
136 | response.parm.length = len; | |
088ec0cc | 137 | iif->statcallb(&response); |
3c66a225 HL |
138 | } |
139 | } | |
140 | EXPORT_SYMBOL_GPL(gigaset_skb_sent); | |
141 | ||
088ec0cc TS |
142 | /** |
143 | * gigaset_skb_rcvd() - pass received skb to LL | |
144 | * @bcs: B channel descriptor structure. | |
145 | * @skb: received data. | |
146 | * | |
147 | * Called by hardware module {bas,ser,usb}_gigaset when user data has | |
148 | * been successfully received, for passing to the LL. | |
149 | * Warning: skb must not be accessed anymore! | |
150 | */ | |
151 | void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb) | |
152 | { | |
153 | isdn_if *iif = bcs->cs->iif; | |
154 | ||
155 | iif->rcvcallb_skb(bcs->cs->myid, bcs->channel, skb); | |
156 | bcs->trans_down++; | |
157 | } | |
158 | EXPORT_SYMBOL_GPL(gigaset_skb_rcvd); | |
159 | ||
160 | /** | |
161 | * gigaset_isdn_rcv_err() - signal receive error | |
162 | * @bcs: B channel descriptor structure. | |
163 | * | |
164 | * Called by hardware module {bas,ser,usb}_gigaset when a receive error | |
165 | * has occurred, for signalling to the LL. | |
166 | */ | |
167 | void gigaset_isdn_rcv_err(struct bc_state *bcs) | |
168 | { | |
169 | isdn_if *iif = bcs->cs->iif; | |
170 | isdn_ctrl response; | |
171 | ||
172 | /* if currently ignoring packets, just count down */ | |
173 | if (bcs->ignore) { | |
174 | bcs->ignore--; | |
175 | return; | |
176 | } | |
177 | ||
178 | /* update statistics */ | |
179 | bcs->corrupted++; | |
180 | ||
181 | /* error -> LL */ | |
182 | gig_dbg(DEBUG_CMD, "sending L1ERR"); | |
183 | response.driver = bcs->cs->myid; | |
184 | response.command = ISDN_STAT_L1ERR; | |
185 | response.arg = bcs->channel; | |
186 | response.parm.errcode = ISDN_STAT_L1ERR_RECV; | |
187 | iif->statcallb(&response); | |
188 | } | |
189 | EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err); | |
190 | ||
3c66a225 HL |
191 | /* This function will be called by LL to send commands |
192 | * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL, | |
193 | * so don't put too much effort into it. | |
194 | */ | |
195 | static int command_from_LL(isdn_ctrl *cntrl) | |
196 | { | |
088ec0cc | 197 | struct cardstate *cs; |
3c66a225 HL |
198 | struct bc_state *bcs; |
199 | int retval = 0; | |
088ec0cc TS |
200 | char **commands; |
201 | int ch; | |
202 | int i; | |
203 | size_t l; | |
3c66a225 | 204 | |
088ec0cc TS |
205 | gig_dbg(DEBUG_CMD, "driver: %d, command: %d, arg: 0x%lx", |
206 | cntrl->driver, cntrl->command, cntrl->arg); | |
207 | ||
208 | cs = gigaset_get_cs_by_id(cntrl->driver); | |
209 | if (cs == NULL) { | |
c8770dca | 210 | pr_err("%s: invalid driver ID (%d)\n", __func__, cntrl->driver); |
3c66a225 HL |
211 | return -ENODEV; |
212 | } | |
088ec0cc | 213 | ch = cntrl->arg & 0xff; |
3c66a225 HL |
214 | |
215 | switch (cntrl->command) { | |
216 | case ISDN_CMD_IOCTL: | |
5002779d | 217 | dev_warn(cs->dev, "ISDN_CMD_IOCTL not supported\n"); |
3c66a225 HL |
218 | return -EINVAL; |
219 | ||
220 | case ISDN_CMD_DIAL: | |
1528b18f | 221 | gig_dbg(DEBUG_CMD, |
088ec0cc | 222 | "ISDN_CMD_DIAL (phone: %s, msn: %s, si1: %d, si2: %d)", |
784d5858 TS |
223 | cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn, |
224 | cntrl->parm.setup.si1, cntrl->parm.setup.si2); | |
3c66a225 | 225 | |
088ec0cc | 226 | if (ch >= cs->channels) { |
5002779d | 227 | dev_err(cs->dev, |
088ec0cc | 228 | "ISDN_CMD_DIAL: invalid channel (%d)\n", ch); |
3c66a225 HL |
229 | return -EINVAL; |
230 | } | |
088ec0cc | 231 | bcs = cs->bcs + ch; |
81fa7b82 | 232 | if (gigaset_get_channel(bcs) < 0) { |
5002779d | 233 | dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n"); |
3c66a225 HL |
234 | return -EBUSY; |
235 | } | |
e7752ee2 TS |
236 | switch (bcs->proto2) { |
237 | case L2_HDLC: | |
238 | bcs->rx_bufsize = SBUFSIZE; | |
239 | break; | |
240 | default: /* assume transparent */ | |
241 | bcs->rx_bufsize = TRANSBUFSIZE; | |
242 | } | |
243 | dev_kfree_skb(bcs->rx_skb); | |
244 | gigaset_new_rx_skb(bcs); | |
3c66a225 | 245 | |
475be4d8 | 246 | commands = kzalloc(AT_NUM * (sizeof *commands), GFP_ATOMIC); |
088ec0cc | 247 | if (!commands) { |
3c66a225 | 248 | gigaset_free_channel(bcs); |
5002779d | 249 | dev_err(cs->dev, "ISDN_CMD_DIAL: out of memory\n"); |
3c66a225 HL |
250 | return -ENOMEM; |
251 | } | |
3c66a225 | 252 | |
088ec0cc TS |
253 | l = 3 + strlen(cntrl->parm.setup.phone); |
254 | commands[AT_DIAL] = kmalloc(l, GFP_ATOMIC); | |
255 | if (!commands[AT_DIAL]) | |
256 | goto oom; | |
257 | if (cntrl->parm.setup.phone[0] == '*' && | |
258 | cntrl->parm.setup.phone[1] == '*') { | |
259 | /* internal call: translate ** prefix to CTP value */ | |
260 | commands[AT_TYPE] = kstrdup("^SCTP=0\r", GFP_ATOMIC); | |
261 | if (!commands[AT_TYPE]) | |
262 | goto oom; | |
263 | snprintf(commands[AT_DIAL], l, | |
475be4d8 | 264 | "D%s\r", cntrl->parm.setup.phone + 2); |
088ec0cc TS |
265 | } else { |
266 | commands[AT_TYPE] = kstrdup("^SCTP=1\r", GFP_ATOMIC); | |
267 | if (!commands[AT_TYPE]) | |
268 | goto oom; | |
269 | snprintf(commands[AT_DIAL], l, | |
270 | "D%s\r", cntrl->parm.setup.phone); | |
271 | } | |
272 | ||
273 | l = strlen(cntrl->parm.setup.eazmsn); | |
274 | if (l) { | |
275 | l += 8; | |
276 | commands[AT_MSN] = kmalloc(l, GFP_ATOMIC); | |
277 | if (!commands[AT_MSN]) | |
278 | goto oom; | |
279 | snprintf(commands[AT_MSN], l, "^SMSN=%s\r", | |
280 | cntrl->parm.setup.eazmsn); | |
281 | } | |
282 | ||
283 | switch (cntrl->parm.setup.si1) { | |
284 | case 1: /* audio */ | |
285 | /* BC = 9090A3: 3.1 kHz audio, A-law */ | |
286 | commands[AT_BC] = kstrdup("^SBC=9090A3\r", GFP_ATOMIC); | |
287 | if (!commands[AT_BC]) | |
288 | goto oom; | |
289 | break; | |
290 | case 7: /* data */ | |
291 | default: /* hope the app knows what it is doing */ | |
292 | /* BC = 8890: unrestricted digital information */ | |
293 | commands[AT_BC] = kstrdup("^SBC=8890\r", GFP_ATOMIC); | |
294 | if (!commands[AT_BC]) | |
295 | goto oom; | |
296 | } | |
297 | /* ToDo: other si1 values, inspect si2, set HLC/LLC */ | |
298 | ||
299 | commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC); | |
300 | if (!commands[AT_PROTO]) | |
301 | goto oom; | |
302 | snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2); | |
303 | ||
304 | commands[AT_ISO] = kmalloc(9, GFP_ATOMIC); | |
305 | if (!commands[AT_ISO]) | |
306 | goto oom; | |
307 | snprintf(commands[AT_ISO], 9, "^SISO=%u\r", | |
308 | (unsigned) bcs->channel + 1); | |
309 | ||
310 | if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands, | |
4d1ff582 | 311 | bcs->at_state.seq_index, NULL)) { |
088ec0cc TS |
312 | for (i = 0; i < AT_NUM; ++i) |
313 | kfree(commands[i]); | |
314 | kfree(commands); | |
3c66a225 HL |
315 | gigaset_free_channel(bcs); |
316 | return -ENOMEM; | |
317 | } | |
3c66a225 HL |
318 | gigaset_schedule_event(cs); |
319 | break; | |
088ec0cc | 320 | case ISDN_CMD_ACCEPTD: |
1528b18f | 321 | gig_dbg(DEBUG_CMD, "ISDN_CMD_ACCEPTD"); |
088ec0cc | 322 | if (ch >= cs->channels) { |
5002779d | 323 | dev_err(cs->dev, |
088ec0cc | 324 | "ISDN_CMD_ACCEPTD: invalid channel (%d)\n", ch); |
3c66a225 HL |
325 | return -EINVAL; |
326 | } | |
088ec0cc | 327 | bcs = cs->bcs + ch; |
e7752ee2 TS |
328 | switch (bcs->proto2) { |
329 | case L2_HDLC: | |
330 | bcs->rx_bufsize = SBUFSIZE; | |
331 | break; | |
332 | default: /* assume transparent */ | |
333 | bcs->rx_bufsize = TRANSBUFSIZE; | |
334 | } | |
335 | dev_kfree_skb(bcs->rx_skb); | |
336 | gigaset_new_rx_skb(bcs); | |
088ec0cc TS |
337 | if (!gigaset_add_event(cs, &bcs->at_state, |
338 | EV_ACCEPT, NULL, 0, NULL)) | |
3c66a225 | 339 | return -ENOMEM; |
3c66a225 HL |
340 | gigaset_schedule_event(cs); |
341 | ||
3c66a225 HL |
342 | break; |
343 | case ISDN_CMD_HANGUP: | |
1528b18f | 344 | gig_dbg(DEBUG_CMD, "ISDN_CMD_HANGUP"); |
088ec0cc | 345 | if (ch >= cs->channels) { |
5002779d | 346 | dev_err(cs->dev, |
088ec0cc | 347 | "ISDN_CMD_HANGUP: invalid channel (%d)\n", ch); |
3c66a225 HL |
348 | return -EINVAL; |
349 | } | |
088ec0cc TS |
350 | bcs = cs->bcs + ch; |
351 | if (!gigaset_add_event(cs, &bcs->at_state, | |
352 | EV_HUP, NULL, 0, NULL)) | |
3c66a225 | 353 | return -ENOMEM; |
3c66a225 HL |
354 | gigaset_schedule_event(cs); |
355 | ||
356 | break; | |
088ec0cc TS |
357 | case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ |
358 | dev_info(cs->dev, "ignoring ISDN_CMD_CLREAZ\n"); | |
3c66a225 | 359 | break; |
088ec0cc TS |
360 | case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ |
361 | dev_info(cs->dev, "ignoring ISDN_CMD_SETEAZ (%s)\n", | |
362 | cntrl->parm.num); | |
3c66a225 | 363 | break; |
917f5085 | 364 | case ISDN_CMD_SETL2: /* Set L2 to given protocol */ |
088ec0cc | 365 | if (ch >= cs->channels) { |
5002779d | 366 | dev_err(cs->dev, |
088ec0cc | 367 | "ISDN_CMD_SETL2: invalid channel (%d)\n", ch); |
3c66a225 HL |
368 | return -EINVAL; |
369 | } | |
088ec0cc TS |
370 | bcs = cs->bcs + ch; |
371 | if (bcs->chstate & CHS_D_UP) { | |
372 | dev_err(cs->dev, | |
373 | "ISDN_CMD_SETL2: channel active (%d)\n", ch); | |
374 | return -EINVAL; | |
375 | } | |
376 | switch (cntrl->arg >> 8) { | |
377 | case ISDN_PROTO_L2_HDLC: | |
378 | gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL2: setting L2_HDLC"); | |
379 | bcs->proto2 = L2_HDLC; | |
380 | break; | |
381 | case ISDN_PROTO_L2_TRANS: | |
382 | gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL2: setting L2_VOICE"); | |
383 | bcs->proto2 = L2_VOICE; | |
384 | break; | |
385 | default: | |
386 | dev_err(cs->dev, | |
387 | "ISDN_CMD_SETL2: unsupported protocol (%lu)\n", | |
388 | cntrl->arg >> 8); | |
389 | return -EINVAL; | |
3c66a225 | 390 | } |
3c66a225 | 391 | break; |
917f5085 | 392 | case ISDN_CMD_SETL3: /* Set L3 to given protocol */ |
1528b18f | 393 | gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL3"); |
088ec0cc | 394 | if (ch >= cs->channels) { |
5002779d | 395 | dev_err(cs->dev, |
088ec0cc | 396 | "ISDN_CMD_SETL3: invalid channel (%d)\n", ch); |
3c66a225 HL |
397 | return -EINVAL; |
398 | } | |
399 | ||
400 | if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) { | |
5002779d | 401 | dev_err(cs->dev, |
088ec0cc | 402 | "ISDN_CMD_SETL3: unsupported protocol (%lu)\n", |
5002779d | 403 | cntrl->arg >> 8); |
3c66a225 HL |
404 | return -EINVAL; |
405 | } | |
406 | ||
407 | break; | |
1528b18f | 408 | |
3c66a225 | 409 | default: |
1528b18f | 410 | gig_dbg(DEBUG_CMD, "unknown command %d from LL", |
5002779d | 411 | cntrl->command); |
3c66a225 HL |
412 | return -EINVAL; |
413 | } | |
414 | ||
415 | return retval; | |
088ec0cc TS |
416 | |
417 | oom: | |
418 | dev_err(bcs->cs->dev, "out of memory\n"); | |
419 | for (i = 0; i < AT_NUM; ++i) | |
420 | kfree(commands[i]); | |
54438f9d TS |
421 | kfree(commands); |
422 | gigaset_free_channel(bcs); | |
088ec0cc | 423 | return -ENOMEM; |
3c66a225 HL |
424 | } |
425 | ||
088ec0cc | 426 | static void gigaset_i4l_cmd(struct cardstate *cs, int cmd) |
3c66a225 | 427 | { |
088ec0cc | 428 | isdn_if *iif = cs->iif; |
3c66a225 HL |
429 | isdn_ctrl command; |
430 | ||
431 | command.driver = cs->myid; | |
432 | command.command = cmd; | |
433 | command.arg = 0; | |
088ec0cc | 434 | iif->statcallb(&command); |
3c66a225 HL |
435 | } |
436 | ||
088ec0cc | 437 | static void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd) |
3c66a225 | 438 | { |
088ec0cc | 439 | isdn_if *iif = bcs->cs->iif; |
3c66a225 HL |
440 | isdn_ctrl command; |
441 | ||
442 | command.driver = bcs->cs->myid; | |
443 | command.command = cmd; | |
444 | command.arg = bcs->channel; | |
088ec0cc | 445 | iif->statcallb(&command); |
3c66a225 HL |
446 | } |
447 | ||
1cec9727 TS |
448 | /** |
449 | * gigaset_isdn_icall() - signal incoming call | |
450 | * @at_state: connection state structure. | |
451 | * | |
452 | * Called by main module to notify the LL that an incoming call has been | |
453 | * received. @at_state contains the parameters of the call. | |
454 | * | |
455 | * Return value: call disposition (ICALL_*) | |
456 | */ | |
3c66a225 HL |
457 | int gigaset_isdn_icall(struct at_state_t *at_state) |
458 | { | |
459 | struct cardstate *cs = at_state->cs; | |
460 | struct bc_state *bcs = at_state->bcs; | |
088ec0cc | 461 | isdn_if *iif = cs->iif; |
3c66a225 HL |
462 | isdn_ctrl response; |
463 | int retval; | |
464 | ||
465 | /* fill ICALL structure */ | |
466 | response.parm.setup.si1 = 0; /* default: unknown */ | |
467 | response.parm.setup.si2 = 0; | |
d9ba9c91 | 468 | response.parm.setup.screen = 0; |
3c66a225 HL |
469 | response.parm.setup.plan = 0; |
470 | if (!at_state->str_var[STR_ZBC]) { | |
471 | /* no BC (internal call): assume speech, A-law */ | |
472 | response.parm.setup.si1 = 1; | |
473 | } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) { | |
474 | /* unrestricted digital information */ | |
475 | response.parm.setup.si1 = 7; | |
476 | } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) { | |
477 | /* speech, A-law */ | |
478 | response.parm.setup.si1 = 1; | |
479 | } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) { | |
480 | /* 3,1 kHz audio, A-law */ | |
481 | response.parm.setup.si1 = 1; | |
482 | response.parm.setup.si2 = 2; | |
483 | } else { | |
784d5858 | 484 | dev_warn(cs->dev, "RING ignored - unsupported BC %s\n", |
475be4d8 | 485 | at_state->str_var[STR_ZBC]); |
3c66a225 HL |
486 | return ICALL_IGNORE; |
487 | } | |
488 | if (at_state->str_var[STR_NMBR]) { | |
d9ba9c91 TS |
489 | strlcpy(response.parm.setup.phone, at_state->str_var[STR_NMBR], |
490 | sizeof response.parm.setup.phone); | |
3c66a225 HL |
491 | } else |
492 | response.parm.setup.phone[0] = 0; | |
493 | if (at_state->str_var[STR_ZCPN]) { | |
d9ba9c91 TS |
494 | strlcpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN], |
495 | sizeof response.parm.setup.eazmsn); | |
3c66a225 HL |
496 | } else |
497 | response.parm.setup.eazmsn[0] = 0; | |
498 | ||
499 | if (!bcs) { | |
784d5858 | 500 | dev_notice(cs->dev, "no channel for incoming call\n"); |
3c66a225 | 501 | response.command = ISDN_STAT_ICALLW; |
d9ba9c91 | 502 | response.arg = 0; |
3c66a225 | 503 | } else { |
784d5858 | 504 | gig_dbg(DEBUG_CMD, "Sending ICALL"); |
3c66a225 | 505 | response.command = ISDN_STAT_ICALL; |
d9ba9c91 | 506 | response.arg = bcs->channel; |
3c66a225 HL |
507 | } |
508 | response.driver = cs->myid; | |
088ec0cc | 509 | retval = iif->statcallb(&response); |
784d5858 | 510 | gig_dbg(DEBUG_CMD, "Response: %d", retval); |
3c66a225 HL |
511 | switch (retval) { |
512 | case 0: /* no takers */ | |
513 | return ICALL_IGNORE; | |
514 | case 1: /* alerting */ | |
515 | bcs->chstate |= CHS_NOTIFY_LL; | |
516 | return ICALL_ACCEPT; | |
517 | case 2: /* reject */ | |
518 | return ICALL_REJECT; | |
519 | case 3: /* incomplete */ | |
784d5858 | 520 | dev_warn(cs->dev, |
475be4d8 | 521 | "LL requested unsupported feature: Incomplete Number\n"); |
3c66a225 HL |
522 | return ICALL_IGNORE; |
523 | case 4: /* proceeding */ | |
524 | /* Gigaset will send ALERTING anyway. | |
525 | * There doesn't seem to be a way to avoid this. | |
526 | */ | |
527 | return ICALL_ACCEPT; | |
528 | case 5: /* deflect */ | |
784d5858 TS |
529 | dev_warn(cs->dev, |
530 | "LL requested unsupported feature: Call Deflection\n"); | |
3c66a225 HL |
531 | return ICALL_IGNORE; |
532 | default: | |
784d5858 | 533 | dev_err(cs->dev, "LL error %d on ICALL\n", retval); |
3c66a225 HL |
534 | return ICALL_IGNORE; |
535 | } | |
536 | } | |
537 | ||
088ec0cc TS |
538 | /** |
539 | * gigaset_isdn_connD() - signal D channel connect | |
540 | * @bcs: B channel descriptor structure. | |
541 | * | |
542 | * Called by main module to notify the LL that the D channel connection has | |
543 | * been established. | |
544 | */ | |
545 | void gigaset_isdn_connD(struct bc_state *bcs) | |
3c66a225 | 546 | { |
088ec0cc TS |
547 | gig_dbg(DEBUG_CMD, "sending DCONN"); |
548 | gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN); | |
549 | } | |
3c66a225 | 550 | |
088ec0cc TS |
551 | /** |
552 | * gigaset_isdn_hupD() - signal D channel hangup | |
553 | * @bcs: B channel descriptor structure. | |
554 | * | |
555 | * Called by main module to notify the LL that the D channel connection has | |
556 | * been shut down. | |
557 | */ | |
558 | void gigaset_isdn_hupD(struct bc_state *bcs) | |
559 | { | |
560 | gig_dbg(DEBUG_CMD, "sending DHUP"); | |
561 | gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP); | |
562 | } | |
563 | ||
564 | /** | |
565 | * gigaset_isdn_connB() - signal B channel connect | |
566 | * @bcs: B channel descriptor structure. | |
567 | * | |
568 | * Called by main module to notify the LL that the B channel connection has | |
569 | * been established. | |
570 | */ | |
571 | void gigaset_isdn_connB(struct bc_state *bcs) | |
572 | { | |
573 | gig_dbg(DEBUG_CMD, "sending BCONN"); | |
574 | gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN); | |
575 | } | |
576 | ||
577 | /** | |
578 | * gigaset_isdn_hupB() - signal B channel hangup | |
579 | * @bcs: B channel descriptor structure. | |
580 | * | |
581 | * Called by main module to notify the LL that the B channel connection has | |
582 | * been shut down. | |
583 | */ | |
584 | void gigaset_isdn_hupB(struct bc_state *bcs) | |
585 | { | |
586 | gig_dbg(DEBUG_CMD, "sending BHUP"); | |
587 | gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP); | |
588 | } | |
589 | ||
590 | /** | |
591 | * gigaset_isdn_start() - signal device availability | |
592 | * @cs: device descriptor structure. | |
593 | * | |
594 | * Called by main module to notify the LL that the device is available for | |
595 | * use. | |
596 | */ | |
597 | void gigaset_isdn_start(struct cardstate *cs) | |
598 | { | |
599 | gig_dbg(DEBUG_CMD, "sending RUN"); | |
600 | gigaset_i4l_cmd(cs, ISDN_STAT_RUN); | |
601 | } | |
602 | ||
603 | /** | |
604 | * gigaset_isdn_stop() - signal device unavailability | |
605 | * @cs: device descriptor structure. | |
606 | * | |
607 | * Called by main module to notify the LL that the device is no longer | |
608 | * available for use. | |
609 | */ | |
610 | void gigaset_isdn_stop(struct cardstate *cs) | |
611 | { | |
612 | gig_dbg(DEBUG_CMD, "sending STOP"); | |
613 | gigaset_i4l_cmd(cs, ISDN_STAT_STOP); | |
614 | } | |
615 | ||
616 | /** | |
bc35b4e3 | 617 | * gigaset_isdn_regdev() - register to LL |
088ec0cc TS |
618 | * @cs: device descriptor structure. |
619 | * @isdnid: device name. | |
620 | * | |
81fa7b82 | 621 | * Return value: 0 on success, error code < 0 on failure |
088ec0cc | 622 | */ |
bc35b4e3 | 623 | int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid) |
088ec0cc TS |
624 | { |
625 | isdn_if *iif; | |
626 | ||
088ec0cc TS |
627 | iif = kmalloc(sizeof *iif, GFP_KERNEL); |
628 | if (!iif) { | |
629 | pr_err("out of memory\n"); | |
81fa7b82 | 630 | return -ENOMEM; |
088ec0cc | 631 | } |
3c66a225 | 632 | |
3c66a225 | 633 | if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index) |
7226d7c9 TS |
634 | >= sizeof iif->id) { |
635 | pr_err("ID too long: %s\n", isdnid); | |
088ec0cc | 636 | kfree(iif); |
81fa7b82 | 637 | return -EINVAL; |
7226d7c9 | 638 | } |
3c66a225 HL |
639 | |
640 | iif->owner = THIS_MODULE; | |
917f5085 | 641 | iif->channels = cs->channels; |
3c66a225 | 642 | iif->maxbufsize = MAX_BUF_SIZE; |
917f5085 | 643 | iif->features = ISDN_FEATURE_L2_TRANS | |
3c66a225 | 644 | ISDN_FEATURE_L2_HDLC | |
3c66a225 | 645 | ISDN_FEATURE_L2_X75I | |
3c66a225 HL |
646 | ISDN_FEATURE_L3_TRANS | |
647 | ISDN_FEATURE_P_EURO; | |
784d5858 | 648 | iif->hl_hdrlen = HW_HDR_LEN; /* Area for storing ack */ |
3c66a225 HL |
649 | iif->command = command_from_LL; |
650 | iif->writebuf_skb = writebuf_from_LL; | |
784d5858 TS |
651 | iif->writecmd = NULL; /* Don't support isdnctrl */ |
652 | iif->readstat = NULL; /* Don't support isdnctrl */ | |
653 | iif->rcvcallb_skb = NULL; /* Will be set by LL */ | |
654 | iif->statcallb = NULL; /* Will be set by LL */ | |
3c66a225 | 655 | |
7226d7c9 TS |
656 | if (!register_isdn(iif)) { |
657 | pr_err("register_isdn failed\n"); | |
088ec0cc | 658 | kfree(iif); |
81fa7b82 | 659 | return -EINVAL; |
7226d7c9 | 660 | } |
3c66a225 | 661 | |
088ec0cc | 662 | cs->iif = iif; |
784d5858 | 663 | cs->myid = iif->channels; /* Set my device id */ |
088ec0cc | 664 | cs->hw_hdr_len = HW_HDR_LEN; |
81fa7b82 | 665 | return 0; |
3c66a225 | 666 | } |
088ec0cc TS |
667 | |
668 | /** | |
bc35b4e3 | 669 | * gigaset_isdn_unregdev() - unregister device from LL |
088ec0cc | 670 | * @cs: device descriptor structure. |
088ec0cc | 671 | */ |
bc35b4e3 | 672 | void gigaset_isdn_unregdev(struct cardstate *cs) |
088ec0cc TS |
673 | { |
674 | gig_dbg(DEBUG_CMD, "sending UNLOAD"); | |
675 | gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD); | |
676 | kfree(cs->iif); | |
677 | cs->iif = NULL; | |
678 | } | |
bc35b4e3 TS |
679 | |
680 | /** | |
681 | * gigaset_isdn_regdrv() - register driver to LL | |
682 | */ | |
683 | void gigaset_isdn_regdrv(void) | |
684 | { | |
fd4f8627 | 685 | pr_info("ISDN4Linux interface\n"); |
bc35b4e3 TS |
686 | /* nothing to do */ |
687 | } | |
688 | ||
689 | /** | |
690 | * gigaset_isdn_unregdrv() - unregister driver from LL | |
691 | */ | |
692 | void gigaset_isdn_unregdrv(void) | |
693 | { | |
694 | /* nothing to do */ | |
695 | } |