Root/
1 | /* |
2 | * Copyright (C) ST-Ericsson AB 2010 |
3 | * Author: Sjur Brendeland/sjur.brandeland@stericsson.com |
4 | * License terms: GNU General Public License (GPL) version 2 |
5 | */ |
6 | |
7 | #include <linux/stddef.h> |
8 | #include <linux/spinlock.h> |
9 | #include <linux/slab.h> |
10 | #include <net/caif/caif_layer.h> |
11 | #include <net/caif/cfpkt.h> |
12 | #include <net/caif/cfctrl.h> |
13 | |
14 | #define container_obj(layr) container_of(layr, struct cfctrl, serv.layer) |
15 | #define UTILITY_NAME_LENGTH 16 |
16 | #define CFPKT_CTRL_PKT_LEN 20 |
17 | |
18 | |
19 | #ifdef CAIF_NO_LOOP |
20 | static int handle_loop(struct cfctrl *ctrl, |
21 | int cmd, struct cfpkt *pkt){ |
22 | return -1; |
23 | } |
24 | #else |
25 | static int handle_loop(struct cfctrl *ctrl, |
26 | int cmd, struct cfpkt *pkt); |
27 | #endif |
28 | static int cfctrl_recv(struct cflayer *layr, struct cfpkt *pkt); |
29 | static void cfctrl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, |
30 | int phyid); |
31 | |
32 | |
33 | struct cflayer *cfctrl_create(void) |
34 | { |
35 | struct dev_info dev_info; |
36 | struct cfctrl *this = |
37 | kmalloc(sizeof(struct cfctrl), GFP_ATOMIC); |
38 | if (!this) { |
39 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
40 | return NULL; |
41 | } |
42 | caif_assert(offsetof(struct cfctrl, serv.layer) == 0); |
43 | memset(&dev_info, 0, sizeof(dev_info)); |
44 | dev_info.id = 0xff; |
45 | memset(this, 0, sizeof(*this)); |
46 | cfsrvl_init(&this->serv, 0, &dev_info, false); |
47 | atomic_set(&this->req_seq_no, 1); |
48 | atomic_set(&this->rsp_seq_no, 1); |
49 | this->serv.layer.receive = cfctrl_recv; |
50 | sprintf(this->serv.layer.name, "ctrl"); |
51 | this->serv.layer.ctrlcmd = cfctrl_ctrlcmd; |
52 | spin_lock_init(&this->loop_linkid_lock); |
53 | spin_lock_init(&this->info_list_lock); |
54 | INIT_LIST_HEAD(&this->list); |
55 | this->loop_linkid = 1; |
56 | return &this->serv.layer; |
57 | } |
58 | |
59 | static bool param_eq(struct cfctrl_link_param *p1, struct cfctrl_link_param *p2) |
60 | { |
61 | bool eq = |
62 | p1->linktype == p2->linktype && |
63 | p1->priority == p2->priority && |
64 | p1->phyid == p2->phyid && |
65 | p1->endpoint == p2->endpoint && p1->chtype == p2->chtype; |
66 | |
67 | if (!eq) |
68 | return false; |
69 | |
70 | switch (p1->linktype) { |
71 | case CFCTRL_SRV_VEI: |
72 | return true; |
73 | case CFCTRL_SRV_DATAGRAM: |
74 | return p1->u.datagram.connid == p2->u.datagram.connid; |
75 | case CFCTRL_SRV_RFM: |
76 | return |
77 | p1->u.rfm.connid == p2->u.rfm.connid && |
78 | strcmp(p1->u.rfm.volume, p2->u.rfm.volume) == 0; |
79 | case CFCTRL_SRV_UTIL: |
80 | return |
81 | p1->u.utility.fifosize_kb == p2->u.utility.fifosize_kb |
82 | && p1->u.utility.fifosize_bufs == |
83 | p2->u.utility.fifosize_bufs |
84 | && strcmp(p1->u.utility.name, p2->u.utility.name) == 0 |
85 | && p1->u.utility.paramlen == p2->u.utility.paramlen |
86 | && memcmp(p1->u.utility.params, p2->u.utility.params, |
87 | p1->u.utility.paramlen) == 0; |
88 | |
89 | case CFCTRL_SRV_VIDEO: |
90 | return p1->u.video.connid == p2->u.video.connid; |
91 | case CFCTRL_SRV_DBG: |
92 | return true; |
93 | case CFCTRL_SRV_DECM: |
94 | return false; |
95 | default: |
96 | return false; |
97 | } |
98 | return false; |
99 | } |
100 | |
101 | bool cfctrl_req_eq(struct cfctrl_request_info *r1, |
102 | struct cfctrl_request_info *r2) |
103 | { |
104 | if (r1->cmd != r2->cmd) |
105 | return false; |
106 | if (r1->cmd == CFCTRL_CMD_LINK_SETUP) |
107 | return param_eq(&r1->param, &r2->param); |
108 | else |
109 | return r1->channel_id == r2->channel_id; |
110 | } |
111 | |
112 | /* Insert request at the end */ |
113 | void cfctrl_insert_req(struct cfctrl *ctrl, |
114 | struct cfctrl_request_info *req) |
115 | { |
116 | spin_lock(&ctrl->info_list_lock); |
117 | atomic_inc(&ctrl->req_seq_no); |
118 | req->sequence_no = atomic_read(&ctrl->req_seq_no); |
119 | list_add_tail(&req->list, &ctrl->list); |
120 | spin_unlock(&ctrl->info_list_lock); |
121 | } |
122 | |
123 | /* Compare and remove request */ |
124 | struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl, |
125 | struct cfctrl_request_info *req) |
126 | { |
127 | struct cfctrl_request_info *p, *tmp, *first; |
128 | |
129 | spin_lock(&ctrl->info_list_lock); |
130 | first = list_first_entry(&ctrl->list, struct cfctrl_request_info, list); |
131 | |
132 | list_for_each_entry_safe(p, tmp, &ctrl->list, list) { |
133 | if (cfctrl_req_eq(req, p)) { |
134 | if (p != first) |
135 | pr_warning("CAIF: %s(): Requests are not " |
136 | "received in order\n", |
137 | __func__); |
138 | |
139 | atomic_set(&ctrl->rsp_seq_no, |
140 | p->sequence_no); |
141 | list_del(&p->list); |
142 | goto out; |
143 | } |
144 | } |
145 | p = NULL; |
146 | out: |
147 | spin_unlock(&ctrl->info_list_lock); |
148 | return p; |
149 | } |
150 | |
151 | struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer) |
152 | { |
153 | struct cfctrl *this = container_obj(layer); |
154 | return &this->res; |
155 | } |
156 | |
157 | void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn) |
158 | { |
159 | this->dn = dn; |
160 | } |
161 | |
162 | void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up) |
163 | { |
164 | this->up = up; |
165 | } |
166 | |
167 | static void init_info(struct caif_payload_info *info, struct cfctrl *cfctrl) |
168 | { |
169 | info->hdr_len = 0; |
170 | info->channel_id = cfctrl->serv.layer.id; |
171 | info->dev_info = &cfctrl->serv.dev_info; |
172 | } |
173 | |
174 | void cfctrl_enum_req(struct cflayer *layer, u8 physlinkid) |
175 | { |
176 | struct cfctrl *cfctrl = container_obj(layer); |
177 | int ret; |
178 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); |
179 | if (!pkt) { |
180 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
181 | return; |
182 | } |
183 | caif_assert(offsetof(struct cfctrl, serv.layer) == 0); |
184 | init_info(cfpkt_info(pkt), cfctrl); |
185 | cfpkt_info(pkt)->dev_info->id = physlinkid; |
186 | cfctrl->serv.dev_info.id = physlinkid; |
187 | cfpkt_addbdy(pkt, CFCTRL_CMD_ENUM); |
188 | cfpkt_addbdy(pkt, physlinkid); |
189 | ret = |
190 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); |
191 | if (ret < 0) { |
192 | pr_err("CAIF: %s(): Could not transmit enum message\n", |
193 | __func__); |
194 | cfpkt_destroy(pkt); |
195 | } |
196 | } |
197 | |
198 | int cfctrl_linkup_request(struct cflayer *layer, |
199 | struct cfctrl_link_param *param, |
200 | struct cflayer *user_layer) |
201 | { |
202 | struct cfctrl *cfctrl = container_obj(layer); |
203 | u32 tmp32; |
204 | u16 tmp16; |
205 | u8 tmp8; |
206 | struct cfctrl_request_info *req; |
207 | int ret; |
208 | char utility_name[16]; |
209 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); |
210 | if (!pkt) { |
211 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
212 | return -ENOMEM; |
213 | } |
214 | cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_SETUP); |
215 | cfpkt_addbdy(pkt, (param->chtype << 4) + param->linktype); |
216 | cfpkt_addbdy(pkt, (param->priority << 3) + param->phyid); |
217 | cfpkt_addbdy(pkt, param->endpoint & 0x03); |
218 | |
219 | switch (param->linktype) { |
220 | case CFCTRL_SRV_VEI: |
221 | break; |
222 | case CFCTRL_SRV_VIDEO: |
223 | cfpkt_addbdy(pkt, (u8) param->u.video.connid); |
224 | break; |
225 | case CFCTRL_SRV_DBG: |
226 | break; |
227 | case CFCTRL_SRV_DATAGRAM: |
228 | tmp32 = cpu_to_le32(param->u.datagram.connid); |
229 | cfpkt_add_body(pkt, &tmp32, 4); |
230 | break; |
231 | case CFCTRL_SRV_RFM: |
232 | /* Construct a frame, convert DatagramConnectionID to network |
233 | * format long and copy it out... |
234 | */ |
235 | tmp32 = cpu_to_le32(param->u.rfm.connid); |
236 | cfpkt_add_body(pkt, &tmp32, 4); |
237 | /* Add volume name, including zero termination... */ |
238 | cfpkt_add_body(pkt, param->u.rfm.volume, |
239 | strlen(param->u.rfm.volume) + 1); |
240 | break; |
241 | case CFCTRL_SRV_UTIL: |
242 | tmp16 = cpu_to_le16(param->u.utility.fifosize_kb); |
243 | cfpkt_add_body(pkt, &tmp16, 2); |
244 | tmp16 = cpu_to_le16(param->u.utility.fifosize_bufs); |
245 | cfpkt_add_body(pkt, &tmp16, 2); |
246 | memset(utility_name, 0, sizeof(utility_name)); |
247 | strncpy(utility_name, param->u.utility.name, |
248 | UTILITY_NAME_LENGTH - 1); |
249 | cfpkt_add_body(pkt, utility_name, UTILITY_NAME_LENGTH); |
250 | tmp8 = param->u.utility.paramlen; |
251 | cfpkt_add_body(pkt, &tmp8, 1); |
252 | cfpkt_add_body(pkt, param->u.utility.params, |
253 | param->u.utility.paramlen); |
254 | break; |
255 | default: |
256 | pr_warning("CAIF: %s():Request setup of bad link type = %d\n", |
257 | __func__, param->linktype); |
258 | return -EINVAL; |
259 | } |
260 | req = kzalloc(sizeof(*req), GFP_KERNEL); |
261 | if (!req) { |
262 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
263 | return -ENOMEM; |
264 | } |
265 | req->client_layer = user_layer; |
266 | req->cmd = CFCTRL_CMD_LINK_SETUP; |
267 | req->param = *param; |
268 | cfctrl_insert_req(cfctrl, req); |
269 | init_info(cfpkt_info(pkt), cfctrl); |
270 | /* |
271 | * NOTE:Always send linkup and linkdown request on the same |
272 | * device as the payload. Otherwise old queued up payload |
273 | * might arrive with the newly allocated channel ID. |
274 | */ |
275 | cfpkt_info(pkt)->dev_info->id = param->phyid; |
276 | ret = |
277 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); |
278 | if (ret < 0) { |
279 | pr_err("CAIF: %s(): Could not transmit linksetup request\n", |
280 | __func__); |
281 | cfpkt_destroy(pkt); |
282 | return -ENODEV; |
283 | } |
284 | return 0; |
285 | } |
286 | |
287 | int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid, |
288 | struct cflayer *client) |
289 | { |
290 | int ret; |
291 | struct cfctrl *cfctrl = container_obj(layer); |
292 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); |
293 | if (!pkt) { |
294 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
295 | return -ENOMEM; |
296 | } |
297 | cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_DESTROY); |
298 | cfpkt_addbdy(pkt, channelid); |
299 | init_info(cfpkt_info(pkt), cfctrl); |
300 | ret = |
301 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); |
302 | if (ret < 0) { |
303 | pr_err("CAIF: %s(): Could not transmit link-down request\n", |
304 | __func__); |
305 | cfpkt_destroy(pkt); |
306 | } |
307 | return ret; |
308 | } |
309 | |
310 | void cfctrl_sleep_req(struct cflayer *layer) |
311 | { |
312 | int ret; |
313 | struct cfctrl *cfctrl = container_obj(layer); |
314 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); |
315 | if (!pkt) { |
316 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
317 | return; |
318 | } |
319 | cfpkt_addbdy(pkt, CFCTRL_CMD_SLEEP); |
320 | init_info(cfpkt_info(pkt), cfctrl); |
321 | ret = |
322 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); |
323 | if (ret < 0) |
324 | cfpkt_destroy(pkt); |
325 | } |
326 | |
327 | void cfctrl_wake_req(struct cflayer *layer) |
328 | { |
329 | int ret; |
330 | struct cfctrl *cfctrl = container_obj(layer); |
331 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); |
332 | if (!pkt) { |
333 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
334 | return; |
335 | } |
336 | cfpkt_addbdy(pkt, CFCTRL_CMD_WAKE); |
337 | init_info(cfpkt_info(pkt), cfctrl); |
338 | ret = |
339 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); |
340 | if (ret < 0) |
341 | cfpkt_destroy(pkt); |
342 | } |
343 | |
344 | void cfctrl_getstartreason_req(struct cflayer *layer) |
345 | { |
346 | int ret; |
347 | struct cfctrl *cfctrl = container_obj(layer); |
348 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); |
349 | if (!pkt) { |
350 | pr_warning("CAIF: %s(): Out of memory\n", __func__); |
351 | return; |
352 | } |
353 | cfpkt_addbdy(pkt, CFCTRL_CMD_START_REASON); |
354 | init_info(cfpkt_info(pkt), cfctrl); |
355 | ret = |
356 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); |
357 | if (ret < 0) |
358 | cfpkt_destroy(pkt); |
359 | } |
360 | |
361 | |
362 | void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer) |
363 | { |
364 | struct cfctrl_request_info *p, *tmp; |
365 | struct cfctrl *ctrl = container_obj(layr); |
366 | spin_lock(&ctrl->info_list_lock); |
367 | pr_warning("CAIF: %s(): enter\n", __func__); |
368 | |
369 | list_for_each_entry_safe(p, tmp, &ctrl->list, list) { |
370 | if (p->client_layer == adap_layer) { |
371 | pr_warning("CAIF: %s(): cancel req :%d\n", __func__, |
372 | p->sequence_no); |
373 | list_del(&p->list); |
374 | kfree(p); |
375 | } |
376 | } |
377 | |
378 | spin_unlock(&ctrl->info_list_lock); |
379 | } |
380 | |
381 | static int cfctrl_recv(struct cflayer *layer, struct cfpkt *pkt) |
382 | { |
383 | u8 cmdrsp; |
384 | u8 cmd; |
385 | int ret = -1; |
386 | u16 tmp16; |
387 | u8 len; |
388 | u8 param[255]; |
389 | u8 linkid; |
390 | struct cfctrl *cfctrl = container_obj(layer); |
391 | struct cfctrl_request_info rsp, *req; |
392 | |
393 | |
394 | cfpkt_extr_head(pkt, &cmdrsp, 1); |
395 | cmd = cmdrsp & CFCTRL_CMD_MASK; |
396 | if (cmd != CFCTRL_CMD_LINK_ERR |
397 | && CFCTRL_RSP_BIT != (CFCTRL_RSP_BIT & cmdrsp)) { |
398 | if (handle_loop(cfctrl, cmd, pkt) != 0) |
399 | cmdrsp |= CFCTRL_ERR_BIT; |
400 | } |
401 | |
402 | switch (cmd) { |
403 | case CFCTRL_CMD_LINK_SETUP: |
404 | { |
405 | enum cfctrl_srv serv; |
406 | enum cfctrl_srv servtype; |
407 | u8 endpoint; |
408 | u8 physlinkid; |
409 | u8 prio; |
410 | u8 tmp; |
411 | u32 tmp32; |
412 | u8 *cp; |
413 | int i; |
414 | struct cfctrl_link_param linkparam; |
415 | memset(&linkparam, 0, sizeof(linkparam)); |
416 | |
417 | cfpkt_extr_head(pkt, &tmp, 1); |
418 | |
419 | serv = tmp & CFCTRL_SRV_MASK; |
420 | linkparam.linktype = serv; |
421 | |
422 | servtype = tmp >> 4; |
423 | linkparam.chtype = servtype; |
424 | |
425 | cfpkt_extr_head(pkt, &tmp, 1); |
426 | physlinkid = tmp & 0x07; |
427 | prio = tmp >> 3; |
428 | |
429 | linkparam.priority = prio; |
430 | linkparam.phyid = physlinkid; |
431 | cfpkt_extr_head(pkt, &endpoint, 1); |
432 | linkparam.endpoint = endpoint & 0x03; |
433 | |
434 | switch (serv) { |
435 | case CFCTRL_SRV_VEI: |
436 | case CFCTRL_SRV_DBG: |
437 | if (CFCTRL_ERR_BIT & cmdrsp) |
438 | break; |
439 | /* Link ID */ |
440 | cfpkt_extr_head(pkt, &linkid, 1); |
441 | break; |
442 | case CFCTRL_SRV_VIDEO: |
443 | cfpkt_extr_head(pkt, &tmp, 1); |
444 | linkparam.u.video.connid = tmp; |
445 | if (CFCTRL_ERR_BIT & cmdrsp) |
446 | break; |
447 | /* Link ID */ |
448 | cfpkt_extr_head(pkt, &linkid, 1); |
449 | break; |
450 | |
451 | case CFCTRL_SRV_DATAGRAM: |
452 | cfpkt_extr_head(pkt, &tmp32, 4); |
453 | linkparam.u.datagram.connid = |
454 | le32_to_cpu(tmp32); |
455 | if (CFCTRL_ERR_BIT & cmdrsp) |
456 | break; |
457 | /* Link ID */ |
458 | cfpkt_extr_head(pkt, &linkid, 1); |
459 | break; |
460 | case CFCTRL_SRV_RFM: |
461 | /* Construct a frame, convert |
462 | * DatagramConnectionID |
463 | * to network format long and copy it out... |
464 | */ |
465 | cfpkt_extr_head(pkt, &tmp32, 4); |
466 | linkparam.u.rfm.connid = |
467 | le32_to_cpu(tmp32); |
468 | cp = (u8 *) linkparam.u.rfm.volume; |
469 | for (cfpkt_extr_head(pkt, &tmp, 1); |
470 | cfpkt_more(pkt) && tmp != '\0'; |
471 | cfpkt_extr_head(pkt, &tmp, 1)) |
472 | *cp++ = tmp; |
473 | *cp = '\0'; |
474 | |
475 | if (CFCTRL_ERR_BIT & cmdrsp) |
476 | break; |
477 | /* Link ID */ |
478 | cfpkt_extr_head(pkt, &linkid, 1); |
479 | |
480 | break; |
481 | case CFCTRL_SRV_UTIL: |
482 | /* Construct a frame, convert |
483 | * DatagramConnectionID |
484 | * to network format long and copy it out... |
485 | */ |
486 | /* Fifosize KB */ |
487 | cfpkt_extr_head(pkt, &tmp16, 2); |
488 | linkparam.u.utility.fifosize_kb = |
489 | le16_to_cpu(tmp16); |
490 | /* Fifosize bufs */ |
491 | cfpkt_extr_head(pkt, &tmp16, 2); |
492 | linkparam.u.utility.fifosize_bufs = |
493 | le16_to_cpu(tmp16); |
494 | /* name */ |
495 | cp = (u8 *) linkparam.u.utility.name; |
496 | caif_assert(sizeof(linkparam.u.utility.name) |
497 | >= UTILITY_NAME_LENGTH); |
498 | for (i = 0; |
499 | i < UTILITY_NAME_LENGTH |
500 | && cfpkt_more(pkt); i++) { |
501 | cfpkt_extr_head(pkt, &tmp, 1); |
502 | *cp++ = tmp; |
503 | } |
504 | /* Length */ |
505 | cfpkt_extr_head(pkt, &len, 1); |
506 | linkparam.u.utility.paramlen = len; |
507 | /* Param Data */ |
508 | cp = linkparam.u.utility.params; |
509 | while (cfpkt_more(pkt) && len--) { |
510 | cfpkt_extr_head(pkt, &tmp, 1); |
511 | *cp++ = tmp; |
512 | } |
513 | if (CFCTRL_ERR_BIT & cmdrsp) |
514 | break; |
515 | /* Link ID */ |
516 | cfpkt_extr_head(pkt, &linkid, 1); |
517 | /* Length */ |
518 | cfpkt_extr_head(pkt, &len, 1); |
519 | /* Param Data */ |
520 | cfpkt_extr_head(pkt, ¶m, len); |
521 | break; |
522 | default: |
523 | pr_warning("CAIF: %s(): Request setup " |
524 | "- invalid link type (%d)", |
525 | __func__, serv); |
526 | goto error; |
527 | } |
528 | |
529 | rsp.cmd = cmd; |
530 | rsp.param = linkparam; |
531 | req = cfctrl_remove_req(cfctrl, &rsp); |
532 | |
533 | if (CFCTRL_ERR_BIT == (CFCTRL_ERR_BIT & cmdrsp) || |
534 | cfpkt_erroneous(pkt)) { |
535 | pr_err("CAIF: %s(): Invalid O/E bit or parse " |
536 | "error on CAIF control channel", |
537 | __func__); |
538 | cfctrl->res.reject_rsp(cfctrl->serv.layer.up, |
539 | 0, |
540 | req ? req->client_layer |
541 | : NULL); |
542 | } else { |
543 | cfctrl->res.linksetup_rsp(cfctrl->serv. |
544 | layer.up, linkid, |
545 | serv, physlinkid, |
546 | req ? req-> |
547 | client_layer : NULL); |
548 | } |
549 | |
550 | if (req != NULL) |
551 | kfree(req); |
552 | } |
553 | break; |
554 | case CFCTRL_CMD_LINK_DESTROY: |
555 | cfpkt_extr_head(pkt, &linkid, 1); |
556 | cfctrl->res.linkdestroy_rsp(cfctrl->serv.layer.up, linkid); |
557 | break; |
558 | case CFCTRL_CMD_LINK_ERR: |
559 | pr_err("CAIF: %s(): Frame Error Indication received\n", |
560 | __func__); |
561 | cfctrl->res.linkerror_ind(); |
562 | break; |
563 | case CFCTRL_CMD_ENUM: |
564 | cfctrl->res.enum_rsp(); |
565 | break; |
566 | case CFCTRL_CMD_SLEEP: |
567 | cfctrl->res.sleep_rsp(); |
568 | break; |
569 | case CFCTRL_CMD_WAKE: |
570 | cfctrl->res.wake_rsp(); |
571 | break; |
572 | case CFCTRL_CMD_LINK_RECONF: |
573 | cfctrl->res.restart_rsp(); |
574 | break; |
575 | case CFCTRL_CMD_RADIO_SET: |
576 | cfctrl->res.radioset_rsp(); |
577 | break; |
578 | default: |
579 | pr_err("CAIF: %s(): Unrecognized Control Frame\n", __func__); |
580 | goto error; |
581 | break; |
582 | } |
583 | ret = 0; |
584 | error: |
585 | cfpkt_destroy(pkt); |
586 | return ret; |
587 | } |
588 | |
589 | static void cfctrl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, |
590 | int phyid) |
591 | { |
592 | struct cfctrl *this = container_obj(layr); |
593 | switch (ctrl) { |
594 | case _CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND: |
595 | case CAIF_CTRLCMD_FLOW_OFF_IND: |
596 | spin_lock(&this->info_list_lock); |
597 | if (!list_empty(&this->list)) { |
598 | pr_debug("CAIF: %s(): Received flow off in " |
599 | "control layer", __func__); |
600 | } |
601 | spin_unlock(&this->info_list_lock); |
602 | break; |
603 | default: |
604 | break; |
605 | } |
606 | } |
607 | |
608 | #ifndef CAIF_NO_LOOP |
609 | static int handle_loop(struct cfctrl *ctrl, int cmd, struct cfpkt *pkt) |
610 | { |
611 | static int last_linkid; |
612 | u8 linkid, linktype, tmp; |
613 | switch (cmd) { |
614 | case CFCTRL_CMD_LINK_SETUP: |
615 | spin_lock(&ctrl->loop_linkid_lock); |
616 | for (linkid = last_linkid + 1; linkid < 255; linkid++) |
617 | if (!ctrl->loop_linkused[linkid]) |
618 | goto found; |
619 | for (linkid = last_linkid - 1; linkid > 0; linkid--) |
620 | if (!ctrl->loop_linkused[linkid]) |
621 | goto found; |
622 | spin_unlock(&ctrl->loop_linkid_lock); |
623 | pr_err("CAIF: %s(): Out of link-ids\n", __func__); |
624 | return -EINVAL; |
625 | found: |
626 | if (!ctrl->loop_linkused[linkid]) |
627 | ctrl->loop_linkused[linkid] = 1; |
628 | |
629 | last_linkid = linkid; |
630 | |
631 | cfpkt_add_trail(pkt, &linkid, 1); |
632 | spin_unlock(&ctrl->loop_linkid_lock); |
633 | cfpkt_peek_head(pkt, &linktype, 1); |
634 | if (linktype == CFCTRL_SRV_UTIL) { |
635 | tmp = 0x01; |
636 | cfpkt_add_trail(pkt, &tmp, 1); |
637 | cfpkt_add_trail(pkt, &tmp, 1); |
638 | } |
639 | break; |
640 | |
641 | case CFCTRL_CMD_LINK_DESTROY: |
642 | spin_lock(&ctrl->loop_linkid_lock); |
643 | cfpkt_peek_head(pkt, &linkid, 1); |
644 | ctrl->loop_linkused[linkid] = 0; |
645 | spin_unlock(&ctrl->loop_linkid_lock); |
646 | break; |
647 | default: |
648 | break; |
649 | } |
650 | return 0; |
651 | } |
652 | #endif |
653 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9