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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/isdn/hardware/eicon/um_idi.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/isdn/hardware/eicon/um_idi.c')
-rw-r--r--drivers/isdn/hardware/eicon/um_idi.c885
1 files changed, 885 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/eicon/um_idi.c b/drivers/isdn/hardware/eicon/um_idi.c
new file mode 100644
index 000000000000..6563db998d06
--- /dev/null
+++ b/drivers/isdn/hardware/eicon/um_idi.c
@@ -0,0 +1,885 @@
1/* $Id: um_idi.c,v 1.14 2004/03/21 17:54:37 armin Exp $ */
2
3#include "platform.h"
4#include "di_defs.h"
5#include "pc.h"
6#include "dqueue.h"
7#include "adapter.h"
8#include "entity.h"
9#include "um_xdi.h"
10#include "um_idi.h"
11#include "debuglib.h"
12#include "divasync.h"
13
14#define DIVAS_MAX_XDI_ADAPTERS 64
15
16/* --------------------------------------------------------------------------
17 IMPORTS
18 -------------------------------------------------------------------------- */
19extern void diva_os_wakeup_read(void *os_context);
20extern void diva_os_wakeup_close(void *os_context);
21/* --------------------------------------------------------------------------
22 LOCALS
23 -------------------------------------------------------------------------- */
24static LIST_HEAD(adapter_q);
25static diva_os_spin_lock_t adapter_lock;
26
27static diva_um_idi_adapter_t *diva_um_idi_find_adapter(dword nr);
28static void cleanup_adapter(diva_um_idi_adapter_t * a);
29static void cleanup_entity(divas_um_idi_entity_t * e);
30static int diva_user_mode_idi_adapter_features(diva_um_idi_adapter_t * a,
31 diva_um_idi_adapter_features_t
32 * features);
33static int process_idi_request(divas_um_idi_entity_t * e,
34 const diva_um_idi_req_hdr_t * req);
35static int process_idi_rc(divas_um_idi_entity_t * e, byte rc);
36static int process_idi_ind(divas_um_idi_entity_t * e, byte ind);
37static int write_return_code(divas_um_idi_entity_t * e, byte rc);
38
39/* --------------------------------------------------------------------------
40 MAIN
41 -------------------------------------------------------------------------- */
42int diva_user_mode_idi_init(void)
43{
44 diva_os_initialize_spin_lock(&adapter_lock, "adapter");
45 return (0);
46}
47
48/* --------------------------------------------------------------------------
49 Copy adapter features to user supplied buffer
50 -------------------------------------------------------------------------- */
51static int
52diva_user_mode_idi_adapter_features(diva_um_idi_adapter_t * a,
53 diva_um_idi_adapter_features_t *
54 features)
55{
56 IDI_SYNC_REQ sync_req;
57
58 if ((a) && (a->d.request)) {
59 features->type = a->d.type;
60 features->features = a->d.features;
61 features->channels = a->d.channels;
62 memset(features->name, 0, sizeof(features->name));
63
64 sync_req.GetName.Req = 0;
65 sync_req.GetName.Rc = IDI_SYNC_REQ_GET_NAME;
66 (*(a->d.request)) ((ENTITY *) & sync_req);
67 strlcpy(features->name, sync_req.GetName.name,
68 sizeof(features->name));
69
70 sync_req.GetSerial.Req = 0;
71 sync_req.GetSerial.Rc = IDI_SYNC_REQ_GET_SERIAL;
72 sync_req.GetSerial.serial = 0;
73 (*(a->d.request)) ((ENTITY *) & sync_req);
74 features->serial_number = sync_req.GetSerial.serial;
75 }
76
77 return ((a) ? 0 : -1);
78}
79
80/* --------------------------------------------------------------------------
81 REMOVE ADAPTER
82 -------------------------------------------------------------------------- */
83void diva_user_mode_idi_remove_adapter(int adapter_nr)
84{
85 struct list_head *tmp;
86 diva_um_idi_adapter_t *a;
87
88 list_for_each(tmp, &adapter_q) {
89 a = list_entry(tmp, diva_um_idi_adapter_t, link);
90 if (a->adapter_nr == adapter_nr) {
91 list_del(tmp);
92 cleanup_adapter(a);
93 DBG_LOG(("DIDD: del adapter(%d)", a->adapter_nr));
94 diva_os_free(0, a);
95 break;
96 }
97 }
98}
99
100/* --------------------------------------------------------------------------
101 CALLED ON DRIVER EXIT (UNLOAD)
102 -------------------------------------------------------------------------- */
103void diva_user_mode_idi_finit(void)
104{
105 struct list_head *tmp, *safe;
106 diva_um_idi_adapter_t *a;
107
108 list_for_each_safe(tmp, safe, &adapter_q) {
109 a = list_entry(tmp, diva_um_idi_adapter_t, link);
110 list_del(tmp);
111 cleanup_adapter(a);
112 DBG_LOG(("DIDD: del adapter(%d)", a->adapter_nr));
113 diva_os_free(0, a);
114 }
115 diva_os_destroy_spin_lock(&adapter_lock, "adapter");
116}
117
118/* -------------------------------------------------------------------------
119 CREATE AND INIT IDI ADAPTER
120 ------------------------------------------------------------------------- */
121int diva_user_mode_idi_create_adapter(const DESCRIPTOR * d, int adapter_nr)
122{
123 diva_os_spin_lock_magic_t old_irql;
124 diva_um_idi_adapter_t *a =
125 (diva_um_idi_adapter_t *) diva_os_malloc(0,
126 sizeof
127 (diva_um_idi_adapter_t));
128
129 if (!a) {
130 return (-1);
131 }
132 memset(a, 0x00, sizeof(*a));
133 INIT_LIST_HEAD(&a->entity_q);
134
135 a->d = *d;
136 a->adapter_nr = adapter_nr;
137
138 DBG_LOG(("DIDD_ADD A(%d), type:%02x, features:%04x, channels:%d",
139 adapter_nr, a->d.type, a->d.features, a->d.channels));
140
141 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "create_adapter");
142 list_add_tail(&a->link, &adapter_q);
143 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "create_adapter");
144 return (0);
145}
146
147/* ------------------------------------------------------------------------
148 Find adapter by Adapter number
149 ------------------------------------------------------------------------ */
150static diva_um_idi_adapter_t *diva_um_idi_find_adapter(dword nr)
151{
152 diva_um_idi_adapter_t *a = NULL;
153 struct list_head *tmp;
154
155 list_for_each(tmp, &adapter_q) {
156 a = list_entry(tmp, diva_um_idi_adapter_t, link);
157 DBG_TRC(("find_adapter: (%d)-(%d)", nr, a->adapter_nr));
158 if (a->adapter_nr == (int)nr)
159 break;
160 a = NULL;
161 }
162 return(a);
163}
164
165/* ------------------------------------------------------------------------
166 Cleanup this adapter and cleanup/delete all entities assigned
167 to this adapter
168 ------------------------------------------------------------------------ */
169static void cleanup_adapter(diva_um_idi_adapter_t * a)
170{
171 struct list_head *tmp, *safe;
172 divas_um_idi_entity_t *e;
173
174 list_for_each_safe(tmp, safe, &a->entity_q) {
175 e = list_entry(tmp, divas_um_idi_entity_t, link);
176 list_del(tmp);
177 cleanup_entity(e);
178 if (e->os_context) {
179 diva_os_wakeup_read(e->os_context);
180 diva_os_wakeup_close(e->os_context);
181 }
182 }
183 memset(&a->d, 0x00, sizeof(DESCRIPTOR));
184}
185
186/* ------------------------------------------------------------------------
187 Cleanup, but NOT delete this entity
188 ------------------------------------------------------------------------ */
189static void cleanup_entity(divas_um_idi_entity_t * e)
190{
191 e->os_ref = NULL;
192 e->status = 0;
193 e->adapter = NULL;
194 e->e.Id = 0;
195 e->rc_count = 0;
196
197 e->status |= DIVA_UM_IDI_REMOVED;
198 e->status |= DIVA_UM_IDI_REMOVE_PENDING;
199
200 diva_data_q_finit(&e->data);
201 diva_data_q_finit(&e->rc);
202}
203
204
205/* ------------------------------------------------------------------------
206 Create ENTITY, link it to the adapter and remove pointer to entity
207 ------------------------------------------------------------------------ */
208void *divas_um_idi_create_entity(dword adapter_nr, void *file)
209{
210 divas_um_idi_entity_t *e;
211 diva_um_idi_adapter_t *a;
212 diva_os_spin_lock_magic_t old_irql;
213
214 if ((e = (divas_um_idi_entity_t *) diva_os_malloc(0, sizeof(*e)))) {
215 memset(e, 0x00, sizeof(*e));
216 if (!
217 (e->os_context =
218 diva_os_malloc(0, diva_os_get_context_size()))) {
219 DBG_LOG(("E(%08x) no memory for os context", e));
220 diva_os_free(0, e);
221 return NULL;
222 }
223 memset(e->os_context, 0x00, diva_os_get_context_size());
224
225 if ((diva_data_q_init(&e->data, 2048 + 512, 16))) {
226 diva_os_free(0, e->os_context);
227 diva_os_free(0, e);
228 return NULL;
229 }
230 if ((diva_data_q_init(&e->rc, sizeof(diva_um_idi_ind_hdr_t), 2))) {
231 diva_data_q_finit(&e->data);
232 diva_os_free(0, e->os_context);
233 diva_os_free(0, e);
234 return NULL;
235 }
236
237 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "create_entity");
238 /*
239 Look for Adapter requested
240 */
241 if (!(a = diva_um_idi_find_adapter(adapter_nr))) {
242 /*
243 No adapter was found, or this adapter was removed
244 */
245 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "create_entity");
246
247 DBG_LOG(("A: no adapter(%ld)", adapter_nr));
248
249 cleanup_entity(e);
250 diva_os_free(0, e->os_context);
251 diva_os_free(0, e);
252
253 return NULL;
254 }
255
256 e->os_ref = file; /* link to os handle */
257 e->adapter = a; /* link to adapter */
258
259 list_add_tail(&e->link, &a->entity_q); /* link from adapter */
260
261 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "create_entity");
262
263 DBG_LOG(("A(%ld), create E(%08x)", adapter_nr, e));
264 }
265
266 return (e);
267}
268
269/* ------------------------------------------------------------------------
270 Unlink entity and free memory
271 ------------------------------------------------------------------------ */
272int divas_um_idi_delete_entity(int adapter_nr, void *entity)
273{
274 divas_um_idi_entity_t *e;
275 diva_um_idi_adapter_t *a;
276 diva_os_spin_lock_magic_t old_irql;
277
278 if (!(e = (divas_um_idi_entity_t *) entity))
279 return (-1);
280
281 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "delete_entity");
282 if ((a = e->adapter)) {
283 list_del(&e->link);
284 }
285 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "delete_entity");
286
287 diva_um_idi_stop_wdog(entity);
288 cleanup_entity(e);
289 diva_os_free(0, e->os_context);
290 memset(e, 0x00, sizeof(*e));
291 diva_os_free(0, e);
292
293 DBG_LOG(("A(%d) remove E:%08x", adapter_nr, e));
294
295 return (0);
296}
297
298/* --------------------------------------------------------------------------
299 Called by application to read data from IDI
300 -------------------------------------------------------------------------- */
301int diva_um_idi_read(void *entity,
302 void *os_handle,
303 void *dst,
304 int max_length, divas_um_idi_copy_to_user_fn_t cp_fn)
305{
306 divas_um_idi_entity_t *e;
307 diva_um_idi_adapter_t *a;
308 const void *data;
309 int length, ret = 0;
310 diva_um_idi_data_queue_t *q;
311 diva_os_spin_lock_magic_t old_irql;
312
313 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "read");
314
315 e = (divas_um_idi_entity_t *) entity;
316 if (!e || (!(a = e->adapter)) ||
317 (e->status & DIVA_UM_IDI_REMOVE_PENDING) ||
318 (e->status & DIVA_UM_IDI_REMOVED) ||
319 (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
320 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "read");
321 DBG_ERR(("E(%08x) read failed - adapter removed", e))
322 return (-1);
323 }
324
325 DBG_TRC(("A(%d) E(%08x) read(%d)", a->adapter_nr, e, max_length));
326
327 /*
328 Try to read return code first
329 */
330 data = diva_data_q_get_segment4read(&e->rc);
331 q = &e->rc;
332
333 /*
334 No return codes available, read indications now
335 */
336 if (!data) {
337 if (!(e->status & DIVA_UM_IDI_RC_PENDING)) {
338 DBG_TRC(("A(%d) E(%08x) read data", a->adapter_nr, e));
339 data = diva_data_q_get_segment4read(&e->data);
340 q = &e->data;
341 }
342 } else {
343 e->status &= ~DIVA_UM_IDI_RC_PENDING;
344 DBG_TRC(("A(%d) E(%08x) read rc", a->adapter_nr, e));
345 }
346
347 if (data) {
348 if ((length = diva_data_q_get_segment_length(q)) >
349 max_length) {
350 /*
351 Not enough space to read message
352 */
353 DBG_ERR(("A: A(%d) E(%08x) read small buffer",
354 a->adapter_nr, e, ret));
355 diva_os_leave_spin_lock(&adapter_lock, &old_irql,
356 "read");
357 return (-2);
358 }
359 /*
360 Copy it to user, this function does access ONLY locked an verified
361 memory, also we can access it witch spin lock held
362 */
363
364 if ((ret = (*cp_fn) (os_handle, dst, data, length)) >= 0) {
365 /*
366 Acknowledge only if read was successfull
367 */
368 diva_data_q_ack_segment4read(q);
369 }
370 }
371
372
373 DBG_TRC(("A(%d) E(%08x) read=%d", a->adapter_nr, e, ret));
374
375 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "read");
376
377 return (ret);
378}
379
380
381int diva_um_idi_write(void *entity,
382 void *os_handle,
383 const void *src,
384 int length, divas_um_idi_copy_from_user_fn_t cp_fn)
385{
386 divas_um_idi_entity_t *e;
387 diva_um_idi_adapter_t *a;
388 diva_um_idi_req_hdr_t *req;
389 void *data;
390 int ret = 0;
391 diva_os_spin_lock_magic_t old_irql;
392
393 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "write");
394
395 e = (divas_um_idi_entity_t *) entity;
396 if (!e || (!(a = e->adapter)) ||
397 (e->status & DIVA_UM_IDI_REMOVE_PENDING) ||
398 (e->status & DIVA_UM_IDI_REMOVED) ||
399 (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
400 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
401 DBG_ERR(("E(%08x) write failed - adapter removed", e))
402 return (-1);
403 }
404
405 DBG_TRC(("A(%d) E(%08x) write(%d)", a->adapter_nr, e, length));
406
407 if ((length < sizeof(*req)) || (length > sizeof(e->buffer))) {
408 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
409 return (-2);
410 }
411
412 if (e->status & DIVA_UM_IDI_RC_PENDING) {
413 DBG_ERR(("A: A(%d) E(%08x) rc pending", a->adapter_nr, e));
414 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
415 return (-1); /* should wait for RC code first */
416 }
417
418 /*
419 Copy function does access only locked verified memory,
420 also it can be called with spin lock held
421 */
422 if ((ret = (*cp_fn) (os_handle, e->buffer, src, length)) < 0) {
423 DBG_TRC(("A: A(%d) E(%08x) write error=%d", a->adapter_nr,
424 e, ret));
425 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
426 return (ret);
427 }
428
429 req = (diva_um_idi_req_hdr_t *) & e->buffer[0];
430
431 switch (req->type) {
432 case DIVA_UM_IDI_GET_FEATURES:{
433 DBG_LOG(("A(%d) get_features", a->adapter_nr));
434 if (!(data =
435 diva_data_q_get_segment4write(&e->data))) {
436 DBG_ERR(("A(%d) get_features, no free buffer",
437 a->adapter_nr));
438 diva_os_leave_spin_lock(&adapter_lock,
439 &old_irql,
440 "write");
441 return (0);
442 }
443 diva_user_mode_idi_adapter_features(a, &(((diva_um_idi_ind_hdr_t
444 *) data)->hdr.features));
445 ((diva_um_idi_ind_hdr_t *) data)->type =
446 DIVA_UM_IDI_IND_FEATURES;
447 ((diva_um_idi_ind_hdr_t *) data)->data_length = 0;
448 diva_data_q_ack_segment4write(&e->data,
449 sizeof(diva_um_idi_ind_hdr_t));
450
451 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
452
453 diva_os_wakeup_read(e->os_context);
454 }
455 break;
456
457 case DIVA_UM_IDI_REQ:
458 case DIVA_UM_IDI_REQ_MAN:
459 case DIVA_UM_IDI_REQ_SIG:
460 case DIVA_UM_IDI_REQ_NET:
461 DBG_TRC(("A(%d) REQ(%02d)-(%02d)-(%08x)", a->adapter_nr,
462 req->Req, req->ReqCh,
463 req->type & DIVA_UM_IDI_REQ_TYPE_MASK));
464 switch (process_idi_request(e, req)) {
465 case -1:
466 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
467 return (-1);
468 case -2:
469 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
470 diva_os_wakeup_read(e->os_context);
471 break;
472 default:
473 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
474 break;
475 }
476 break;
477
478 default:
479 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "write");
480 return (-1);
481 }
482
483 DBG_TRC(("A(%d) E(%08x) write=%d", a->adapter_nr, e, ret));
484
485 return (ret);
486}
487
488/* --------------------------------------------------------------------------
489 CALLBACK FROM XDI
490 -------------------------------------------------------------------------- */
491static void diva_um_idi_xdi_callback(ENTITY * entity)
492{
493 divas_um_idi_entity_t *e = DIVAS_CONTAINING_RECORD(entity,
494 divas_um_idi_entity_t,
495 e);
496 diva_os_spin_lock_magic_t old_irql;
497 int call_wakeup = 0;
498
499 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "xdi_callback");
500
501 if (e->e.complete == 255) {
502 if (!(e->status & DIVA_UM_IDI_REMOVE_PENDING)) {
503 diva_um_idi_stop_wdog(e);
504 }
505 if ((call_wakeup = process_idi_rc(e, e->e.Rc))) {
506 if (e->rc_count) {
507 e->rc_count--;
508 }
509 }
510 e->e.Rc = 0;
511 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "xdi_callback");
512
513 if (call_wakeup) {
514 diva_os_wakeup_read(e->os_context);
515 diva_os_wakeup_close(e->os_context);
516 }
517 } else {
518 if (e->status & DIVA_UM_IDI_REMOVE_PENDING) {
519 e->e.RNum = 0;
520 e->e.RNR = 2;
521 } else {
522 call_wakeup = process_idi_ind(e, e->e.Ind);
523 }
524 e->e.Ind = 0;
525 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "xdi_callback");
526 if (call_wakeup) {
527 diva_os_wakeup_read(e->os_context);
528 }
529 }
530}
531
532static int process_idi_request(divas_um_idi_entity_t * e,
533 const diva_um_idi_req_hdr_t * req)
534{
535 int assign = 0;
536 byte Req = (byte) req->Req;
537 dword type = req->type & DIVA_UM_IDI_REQ_TYPE_MASK;
538
539 if (!e->e.Id || !e->e.callback) { /* not assigned */
540 if (Req != ASSIGN) {
541 DBG_ERR(("A: A(%d) E(%08x) not assigned",
542 e->adapter->adapter_nr, e));
543 return (-1); /* NOT ASSIGNED */
544 } else {
545 switch (type) {
546 case DIVA_UM_IDI_REQ_TYPE_MAN:
547 e->e.Id = MAN_ID;
548 DBG_TRC(("A(%d) E(%08x) assign MAN",
549 e->adapter->adapter_nr, e));
550 break;
551
552 case DIVA_UM_IDI_REQ_TYPE_SIG:
553 e->e.Id = DSIG_ID;
554 DBG_TRC(("A(%d) E(%08x) assign SIG",
555 e->adapter->adapter_nr, e));
556 break;
557
558 case DIVA_UM_IDI_REQ_TYPE_NET:
559 e->e.Id = NL_ID;
560 DBG_TRC(("A(%d) E(%08x) assign NET",
561 e->adapter->adapter_nr, e));
562 break;
563
564 default:
565 DBG_ERR(("A: A(%d) E(%08x) unknown type=%08x",
566 e->adapter->adapter_nr, e,
567 type));
568 return (-1);
569 }
570 }
571 e->e.XNum = 1;
572 e->e.RNum = 1;
573 e->e.callback = diva_um_idi_xdi_callback;
574 e->e.X = &e->XData;
575 e->e.R = &e->RData;
576 assign = 1;
577 }
578 e->status |= DIVA_UM_IDI_RC_PENDING;
579 e->e.Req = Req;
580 e->e.ReqCh = (byte) req->ReqCh;
581 e->e.X->PLength = (word) req->data_length;
582 e->e.X->P = (byte *) & req[1]; /* Our buffer is safe */
583
584 DBG_TRC(("A(%d) E(%08x) request(%02x-%02x-%02x (%d))",
585 e->adapter->adapter_nr, e, e->e.Id, e->e.Req,
586 e->e.ReqCh, e->e.X->PLength));
587
588 e->rc_count++;
589
590 if (e->adapter && e->adapter->d.request) {
591 diva_um_idi_start_wdog(e);
592 (*(e->adapter->d.request)) (&e->e);
593 }
594
595 if (assign) {
596 if (e->e.Rc == OUT_OF_RESOURCES) {
597 /*
598 XDI has no entities more, call was not forwarded to the card,
599 no callback will be scheduled
600 */
601 DBG_ERR(("A: A(%d) E(%08x) XDI out of entities",
602 e->adapter->adapter_nr, e));
603
604 e->e.Id = 0;
605 e->e.ReqCh = 0;
606 e->e.RcCh = 0;
607 e->e.Ind = 0;
608 e->e.IndCh = 0;
609 e->e.XNum = 0;
610 e->e.RNum = 0;
611 e->e.callback = NULL;
612 e->e.X = NULL;
613 e->e.R = NULL;
614 write_return_code(e, ASSIGN_RC | OUT_OF_RESOURCES);
615 return (-2);
616 } else {
617 e->status |= DIVA_UM_IDI_ASSIGN_PENDING;
618 }
619 }
620
621 return (0);
622}
623
624static int process_idi_rc(divas_um_idi_entity_t * e, byte rc)
625{
626 DBG_TRC(("A(%d) E(%08x) rc(%02x-%02x-%02x)",
627 e->adapter->adapter_nr, e, e->e.Id, rc, e->e.RcCh));
628
629 if (e->status & DIVA_UM_IDI_ASSIGN_PENDING) {
630 e->status &= ~DIVA_UM_IDI_ASSIGN_PENDING;
631 if (rc != ASSIGN_OK) {
632 DBG_ERR(("A: A(%d) E(%08x) ASSIGN failed",
633 e->adapter->adapter_nr, e));
634 e->e.callback = NULL;
635 e->e.Id = 0;
636 e->e.Req = 0;
637 e->e.ReqCh = 0;
638 e->e.Rc = 0;
639 e->e.RcCh = 0;
640 e->e.Ind = 0;
641 e->e.IndCh = 0;
642 e->e.X = NULL;
643 e->e.R = NULL;
644 e->e.XNum = 0;
645 e->e.RNum = 0;
646 }
647 }
648 if ((e->e.Req == REMOVE) && e->e.Id && (rc == 0xff)) {
649 DBG_ERR(("A: A(%d) E(%08x) discard OK in REMOVE",
650 e->adapter->adapter_nr, e));
651 return (0); /* let us do it in the driver */
652 }
653 if ((e->e.Req == REMOVE) && (!e->e.Id)) { /* REMOVE COMPLETE */
654 e->e.callback = NULL;
655 e->e.Id = 0;
656 e->e.Req = 0;
657 e->e.ReqCh = 0;
658 e->e.Rc = 0;
659 e->e.RcCh = 0;
660 e->e.Ind = 0;
661 e->e.IndCh = 0;
662 e->e.X = NULL;
663 e->e.R = NULL;
664 e->e.XNum = 0;
665 e->e.RNum = 0;
666 e->rc_count = 0;
667 }
668 if ((e->e.Req == REMOVE) && (rc != 0xff)) { /* REMOVE FAILED */
669 DBG_ERR(("A: A(%d) E(%08x) REMOVE FAILED",
670 e->adapter->adapter_nr, e));
671 }
672 write_return_code(e, rc);
673
674 return (1);
675}
676
677static int process_idi_ind(divas_um_idi_entity_t * e, byte ind)
678{
679 int do_wakeup = 0;
680
681 if (e->e.complete != 0x02) {
682 diva_um_idi_ind_hdr_t *pind =
683 (diva_um_idi_ind_hdr_t *)
684 diva_data_q_get_segment4write(&e->data);
685 if (pind) {
686 e->e.RNum = 1;
687 e->e.R->P = (byte *) & pind[1];
688 e->e.R->PLength =
689 (word) (diva_data_q_get_max_length(&e->data) -
690 sizeof(*pind));
691 DBG_TRC(("A(%d) E(%08x) ind_1(%02x-%02x-%02x)-[%d-%d]",
692 e->adapter->adapter_nr, e, e->e.Id, ind,
693 e->e.IndCh, e->e.RLength,
694 e->e.R->PLength));
695
696 } else {
697 DBG_TRC(("A(%d) E(%08x) ind(%02x-%02x-%02x)-RNR",
698 e->adapter->adapter_nr, e, e->e.Id, ind,
699 e->e.IndCh));
700 e->e.RNum = 0;
701 e->e.RNR = 1;
702 do_wakeup = 1;
703 }
704 } else {
705 diva_um_idi_ind_hdr_t *pind =
706 (diva_um_idi_ind_hdr_t *) (e->e.R->P);
707
708 DBG_TRC(("A(%d) E(%08x) ind(%02x-%02x-%02x)-[%d]",
709 e->adapter->adapter_nr, e, e->e.Id, ind,
710 e->e.IndCh, e->e.R->PLength));
711
712 pind--;
713 pind->type = DIVA_UM_IDI_IND;
714 pind->hdr.ind.Ind = ind;
715 pind->hdr.ind.IndCh = e->e.IndCh;
716 pind->data_length = e->e.R->PLength;
717 diva_data_q_ack_segment4write(&e->data,
718 (int) (sizeof(*pind) +
719 e->e.R->PLength));
720 do_wakeup = 1;
721 }
722
723 if ((e->status & DIVA_UM_IDI_RC_PENDING) && !e->rc.count) {
724 do_wakeup = 0;
725 }
726
727 return (do_wakeup);
728}
729
730/* --------------------------------------------------------------------------
731 Write return code to the return code queue of entity
732 -------------------------------------------------------------------------- */
733static int write_return_code(divas_um_idi_entity_t * e, byte rc)
734{
735 diva_um_idi_ind_hdr_t *prc;
736
737 if (!(prc =
738 (diva_um_idi_ind_hdr_t *) diva_data_q_get_segment4write(&e->rc)))
739 {
740 DBG_ERR(("A: A(%d) E(%08x) rc(%02x) lost",
741 e->adapter->adapter_nr, e, rc));
742 e->status &= ~DIVA_UM_IDI_RC_PENDING;
743 return (-1);
744 }
745
746 prc->type = DIVA_UM_IDI_IND_RC;
747 prc->hdr.rc.Rc = rc;
748 prc->hdr.rc.RcCh = e->e.RcCh;
749 prc->data_length = 0;
750 diva_data_q_ack_segment4write(&e->rc, sizeof(*prc));
751
752 return (0);
753}
754
755/* --------------------------------------------------------------------------
756 Return amount of entries that can be bead from this entity or
757 -1 if adapter was removed
758 -------------------------------------------------------------------------- */
759int diva_user_mode_idi_ind_ready(void *entity, void *os_handle)
760{
761 divas_um_idi_entity_t *e;
762 diva_um_idi_adapter_t *a;
763 diva_os_spin_lock_magic_t old_irql;
764 int ret;
765
766 if (!entity)
767 return (-1);
768 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "ind_ready");
769 e = (divas_um_idi_entity_t *) entity;
770 a = e->adapter;
771
772 if ((!a) || (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
773 /*
774 Adapter was unloaded
775 */
776 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "ind_ready");
777 return (-1); /* adapter was removed */
778 }
779 if (e->status & DIVA_UM_IDI_REMOVED) {
780 /*
781 entity was removed as result of adapter removal
782 user should assign this entity again
783 */
784 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "ind_ready");
785 return (-1);
786 }
787
788 ret = e->rc.count + e->data.count;
789
790 if ((e->status & DIVA_UM_IDI_RC_PENDING) && !e->rc.count) {
791 ret = 0;
792 }
793
794 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "ind_ready");
795
796 return (ret);
797}
798
799void *diva_um_id_get_os_context(void *entity)
800{
801 return (((divas_um_idi_entity_t *) entity)->os_context);
802}
803
804int divas_um_idi_entity_assigned(void *entity)
805{
806 divas_um_idi_entity_t *e;
807 diva_um_idi_adapter_t *a;
808 int ret;
809 diva_os_spin_lock_magic_t old_irql;
810
811 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "assigned?");
812
813
814 e = (divas_um_idi_entity_t *) entity;
815 if (!e || (!(a = e->adapter)) ||
816 (e->status & DIVA_UM_IDI_REMOVED) ||
817 (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
818 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "assigned?");
819 return (0);
820 }
821
822 e->status |= DIVA_UM_IDI_REMOVE_PENDING;
823
824 ret = (e->e.Id || e->rc_count
825 || (e->status & DIVA_UM_IDI_ASSIGN_PENDING));
826
827 DBG_TRC(("Id:%02x, rc_count:%d, status:%08x", e->e.Id, e->rc_count,
828 e->status))
829
830 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "assigned?");
831
832 return (ret);
833}
834
835int divas_um_idi_entity_start_remove(void *entity)
836{
837 divas_um_idi_entity_t *e;
838 diva_um_idi_adapter_t *a;
839 diva_os_spin_lock_magic_t old_irql;
840
841 diva_os_enter_spin_lock(&adapter_lock, &old_irql, "start_remove");
842
843 e = (divas_um_idi_entity_t *) entity;
844 if (!e || (!(a = e->adapter)) ||
845 (e->status & DIVA_UM_IDI_REMOVED) ||
846 (a->status & DIVA_UM_IDI_ADAPTER_REMOVED)) {
847 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
848 return (0);
849 }
850
851 if (e->rc_count) {
852 /*
853 Entity BUSY
854 */
855 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
856 return (1);
857 }
858
859 if (!e->e.Id) {
860 /*
861 Remove request was already pending, and arrived now
862 */
863 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
864 return (0); /* REMOVE was pending */
865 }
866
867 /*
868 Now send remove request
869 */
870 e->e.Req = REMOVE;
871 e->e.ReqCh = 0;
872
873 e->rc_count++;
874
875 DBG_TRC(("A(%d) E(%08x) request(%02x-%02x-%02x (%d))",
876 e->adapter->adapter_nr, e, e->e.Id, e->e.Req,
877 e->e.ReqCh, e->e.X->PLength));
878
879 if (a->d.request)
880 (*(a->d.request)) (&e->e);
881
882 diva_os_leave_spin_lock(&adapter_lock, &old_irql, "start_remove");
883
884 return (0);
885}
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-22 17:24:18 -0400