1 /**
2 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
3 *
4 * This source file is released under GPL v2 license (no other versions).
5 * See the COPYING file included in the main directory of this source
6 * distribution for the license terms and conditions.
7 *
8 * @File ctsrc.c
9 *
10 * @Brief
11 * This file contains the implementation of the Sample Rate Convertor
12 * resource management object.
13 *
14 * @Author Liu Chun
15 * @Date May 13 2008
16 *
17 */
18
19 #include "ctsrc.h"
20 #include "cthardware.h"
21 #include <linux/slab.h>
22
23 #define SRC_RESOURCE_NUM 256
24 #define SRCIMP_RESOURCE_NUM 256
25
26 static unsigned int conj_mask;
27
28 static int src_default_config_memrd(struct src *src);
29 static int src_default_config_memwr(struct src *src);
30 static int src_default_config_arcrw(struct src *src);
31
32 static int (*src_default_config[3])(struct src *) = {
33 [MEMRD] = src_default_config_memrd,
34 [MEMWR] = src_default_config_memwr,
35 [ARCRW] = src_default_config_arcrw
36 };
37
src_set_state(struct src * src,unsigned int state)38 static int src_set_state(struct src *src, unsigned int state)
39 {
40 struct hw *hw;
41
42 hw = src->rsc.hw;
43 hw->src_set_state(src->rsc.ctrl_blk, state);
44
45 return 0;
46 }
47
src_set_bm(struct src * src,unsigned int bm)48 static int src_set_bm(struct src *src, unsigned int bm)
49 {
50 struct hw *hw;
51
52 hw = src->rsc.hw;
53 hw->src_set_bm(src->rsc.ctrl_blk, bm);
54
55 return 0;
56 }
57
src_set_sf(struct src * src,unsigned int sf)58 static int src_set_sf(struct src *src, unsigned int sf)
59 {
60 struct hw *hw;
61
62 hw = src->rsc.hw;
63 hw->src_set_sf(src->rsc.ctrl_blk, sf);
64
65 return 0;
66 }
67
src_set_pm(struct src * src,unsigned int pm)68 static int src_set_pm(struct src *src, unsigned int pm)
69 {
70 struct hw *hw;
71
72 hw = src->rsc.hw;
73 hw->src_set_pm(src->rsc.ctrl_blk, pm);
74
75 return 0;
76 }
77
src_set_rom(struct src * src,unsigned int rom)78 static int src_set_rom(struct src *src, unsigned int rom)
79 {
80 struct hw *hw;
81
82 hw = src->rsc.hw;
83 hw->src_set_rom(src->rsc.ctrl_blk, rom);
84
85 return 0;
86 }
87
src_set_vo(struct src * src,unsigned int vo)88 static int src_set_vo(struct src *src, unsigned int vo)
89 {
90 struct hw *hw;
91
92 hw = src->rsc.hw;
93 hw->src_set_vo(src->rsc.ctrl_blk, vo);
94
95 return 0;
96 }
97
src_set_st(struct src * src,unsigned int st)98 static int src_set_st(struct src *src, unsigned int st)
99 {
100 struct hw *hw;
101
102 hw = src->rsc.hw;
103 hw->src_set_st(src->rsc.ctrl_blk, st);
104
105 return 0;
106 }
107
src_set_bp(struct src * src,unsigned int bp)108 static int src_set_bp(struct src *src, unsigned int bp)
109 {
110 struct hw *hw;
111
112 hw = src->rsc.hw;
113 hw->src_set_bp(src->rsc.ctrl_blk, bp);
114
115 return 0;
116 }
117
src_set_cisz(struct src * src,unsigned int cisz)118 static int src_set_cisz(struct src *src, unsigned int cisz)
119 {
120 struct hw *hw;
121
122 hw = src->rsc.hw;
123 hw->src_set_cisz(src->rsc.ctrl_blk, cisz);
124
125 return 0;
126 }
127
src_set_ca(struct src * src,unsigned int ca)128 static int src_set_ca(struct src *src, unsigned int ca)
129 {
130 struct hw *hw;
131
132 hw = src->rsc.hw;
133 hw->src_set_ca(src->rsc.ctrl_blk, ca);
134
135 return 0;
136 }
137
src_set_sa(struct src * src,unsigned int sa)138 static int src_set_sa(struct src *src, unsigned int sa)
139 {
140 struct hw *hw;
141
142 hw = src->rsc.hw;
143 hw->src_set_sa(src->rsc.ctrl_blk, sa);
144
145 return 0;
146 }
147
src_set_la(struct src * src,unsigned int la)148 static int src_set_la(struct src *src, unsigned int la)
149 {
150 struct hw *hw;
151
152 hw = src->rsc.hw;
153 hw->src_set_la(src->rsc.ctrl_blk, la);
154
155 return 0;
156 }
157
src_set_pitch(struct src * src,unsigned int pitch)158 static int src_set_pitch(struct src *src, unsigned int pitch)
159 {
160 struct hw *hw;
161
162 hw = src->rsc.hw;
163 hw->src_set_pitch(src->rsc.ctrl_blk, pitch);
164
165 return 0;
166 }
167
src_set_clear_zbufs(struct src * src)168 static int src_set_clear_zbufs(struct src *src)
169 {
170 struct hw *hw;
171
172 hw = src->rsc.hw;
173 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
174
175 return 0;
176 }
177
src_commit_write(struct src * src)178 static int src_commit_write(struct src *src)
179 {
180 struct hw *hw;
181 int i;
182 unsigned int dirty = 0;
183
184 hw = src->rsc.hw;
185 src->rsc.ops->master(&src->rsc);
186 if (src->rsc.msr > 1) {
187 /* Save dirty flags for conjugate resource programming */
188 dirty = hw->src_get_dirty(src->rsc.ctrl_blk) & conj_mask;
189 }
190 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
191 src->rsc.ctrl_blk);
192
193 /* Program conjugate parameter mixer resources */
194 if (MEMWR == src->mode)
195 return 0;
196
197 for (i = 1; i < src->rsc.msr; i++) {
198 src->rsc.ops->next_conj(&src->rsc);
199 hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
200 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
201 src->rsc.ctrl_blk);
202 }
203 src->rsc.ops->master(&src->rsc);
204
205 return 0;
206 }
207
src_get_ca(struct src * src)208 static int src_get_ca(struct src *src)
209 {
210 struct hw *hw;
211
212 hw = src->rsc.hw;
213 return hw->src_get_ca(hw, src->rsc.ops->index(&src->rsc),
214 src->rsc.ctrl_blk);
215 }
216
src_init(struct src * src)217 static int src_init(struct src *src)
218 {
219 src_default_config[src->mode](src);
220
221 return 0;
222 }
223
src_next_interleave(struct src * src)224 static struct src *src_next_interleave(struct src *src)
225 {
226 return src->intlv;
227 }
228
src_default_config_memrd(struct src * src)229 static int src_default_config_memrd(struct src *src)
230 {
231 struct hw *hw = src->rsc.hw;
232 unsigned int rsr, msr;
233
234 hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
235 hw->src_set_bm(src->rsc.ctrl_blk, 1);
236 for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
237 rsr++;
238
239 hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
240 hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
241 hw->src_set_wr(src->rsc.ctrl_blk, 0);
242 hw->src_set_pm(src->rsc.ctrl_blk, 0);
243 hw->src_set_rom(src->rsc.ctrl_blk, 0);
244 hw->src_set_vo(src->rsc.ctrl_blk, 0);
245 hw->src_set_st(src->rsc.ctrl_blk, 0);
246 hw->src_set_ilsz(src->rsc.ctrl_blk, src->multi - 1);
247 hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
248 hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
249 hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
250 hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
251 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
252 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
253
254 src->rsc.ops->master(&src->rsc);
255 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
256 src->rsc.ctrl_blk);
257
258 for (msr = 1; msr < src->rsc.msr; msr++) {
259 src->rsc.ops->next_conj(&src->rsc);
260 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
261 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
262 src->rsc.ctrl_blk);
263 }
264 src->rsc.ops->master(&src->rsc);
265
266 return 0;
267 }
268
src_default_config_memwr(struct src * src)269 static int src_default_config_memwr(struct src *src)
270 {
271 struct hw *hw = src->rsc.hw;
272
273 hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
274 hw->src_set_bm(src->rsc.ctrl_blk, 1);
275 hw->src_set_rsr(src->rsc.ctrl_blk, 0);
276 hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_S16);
277 hw->src_set_wr(src->rsc.ctrl_blk, 1);
278 hw->src_set_pm(src->rsc.ctrl_blk, 0);
279 hw->src_set_rom(src->rsc.ctrl_blk, 0);
280 hw->src_set_vo(src->rsc.ctrl_blk, 0);
281 hw->src_set_st(src->rsc.ctrl_blk, 0);
282 hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
283 hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
284 hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
285 hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
286 hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
287 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
288 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
289
290 src->rsc.ops->master(&src->rsc);
291 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
292 src->rsc.ctrl_blk);
293
294 return 0;
295 }
296
src_default_config_arcrw(struct src * src)297 static int src_default_config_arcrw(struct src *src)
298 {
299 struct hw *hw = src->rsc.hw;
300 unsigned int rsr, msr;
301 unsigned int dirty;
302
303 hw->src_set_state(src->rsc.ctrl_blk, SRC_STATE_OFF);
304 hw->src_set_bm(src->rsc.ctrl_blk, 0);
305 for (rsr = 0, msr = src->rsc.msr; msr > 1; msr >>= 1)
306 rsr++;
307
308 hw->src_set_rsr(src->rsc.ctrl_blk, rsr);
309 hw->src_set_sf(src->rsc.ctrl_blk, SRC_SF_F32);
310 hw->src_set_wr(src->rsc.ctrl_blk, 0);
311 hw->src_set_pm(src->rsc.ctrl_blk, 0);
312 hw->src_set_rom(src->rsc.ctrl_blk, 0);
313 hw->src_set_vo(src->rsc.ctrl_blk, 0);
314 hw->src_set_st(src->rsc.ctrl_blk, 0);
315 hw->src_set_ilsz(src->rsc.ctrl_blk, 0);
316 hw->src_set_cisz(src->rsc.ctrl_blk, 0x80);
317 hw->src_set_sa(src->rsc.ctrl_blk, 0x0);
318 /*hw->src_set_sa(src->rsc.ctrl_blk, 0x100);*/
319 hw->src_set_la(src->rsc.ctrl_blk, 0x1000);
320 /*hw->src_set_la(src->rsc.ctrl_blk, 0x03ffffe0);*/
321 hw->src_set_ca(src->rsc.ctrl_blk, 0x80);
322 hw->src_set_pitch(src->rsc.ctrl_blk, 0x1000000);
323 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
324
325 dirty = hw->src_get_dirty(src->rsc.ctrl_blk);
326 src->rsc.ops->master(&src->rsc);
327 for (msr = 0; msr < src->rsc.msr; msr++) {
328 hw->src_set_dirty(src->rsc.ctrl_blk, dirty);
329 hw->src_commit_write(hw, src->rsc.ops->index(&src->rsc),
330 src->rsc.ctrl_blk);
331 src->rsc.ops->next_conj(&src->rsc);
332 }
333 src->rsc.ops->master(&src->rsc);
334
335 return 0;
336 }
337
338 static struct src_rsc_ops src_rsc_ops = {
339 .set_state = src_set_state,
340 .set_bm = src_set_bm,
341 .set_sf = src_set_sf,
342 .set_pm = src_set_pm,
343 .set_rom = src_set_rom,
344 .set_vo = src_set_vo,
345 .set_st = src_set_st,
346 .set_bp = src_set_bp,
347 .set_cisz = src_set_cisz,
348 .set_ca = src_set_ca,
349 .set_sa = src_set_sa,
350 .set_la = src_set_la,
351 .set_pitch = src_set_pitch,
352 .set_clr_zbufs = src_set_clear_zbufs,
353 .commit_write = src_commit_write,
354 .get_ca = src_get_ca,
355 .init = src_init,
356 .next_interleave = src_next_interleave,
357 };
358
359 static int
src_rsc_init(struct src * src,u32 idx,const struct src_desc * desc,struct src_mgr * mgr)360 src_rsc_init(struct src *src, u32 idx,
361 const struct src_desc *desc, struct src_mgr *mgr)
362 {
363 int err;
364 int i, n;
365 struct src *p;
366
367 n = (MEMRD == desc->mode) ? desc->multi : 1;
368 for (i = 0, p = src; i < n; i++, p++) {
369 err = rsc_init(&p->rsc, idx + i, SRC, desc->msr, mgr->mgr.hw);
370 if (err)
371 goto error1;
372
373 /* Initialize src specific rsc operations */
374 p->ops = &src_rsc_ops;
375 p->multi = (0 == i) ? desc->multi : 1;
376 p->mode = desc->mode;
377 src_default_config[desc->mode](p);
378 mgr->src_enable(mgr, p);
379 p->intlv = p + 1;
380 }
381 (--p)->intlv = NULL; /* Set @intlv of the last SRC to NULL */
382
383 mgr->commit_write(mgr);
384
385 return 0;
386
387 error1:
388 for (i--, p--; i >= 0; i--, p--) {
389 mgr->src_disable(mgr, p);
390 rsc_uninit(&p->rsc);
391 }
392 mgr->commit_write(mgr);
393 return err;
394 }
395
src_rsc_uninit(struct src * src,struct src_mgr * mgr)396 static int src_rsc_uninit(struct src *src, struct src_mgr *mgr)
397 {
398 int i, n;
399 struct src *p;
400
401 n = (MEMRD == src->mode) ? src->multi : 1;
402 for (i = 0, p = src; i < n; i++, p++) {
403 mgr->src_disable(mgr, p);
404 rsc_uninit(&p->rsc);
405 p->multi = 0;
406 p->ops = NULL;
407 p->mode = NUM_SRCMODES;
408 p->intlv = NULL;
409 }
410 mgr->commit_write(mgr);
411
412 return 0;
413 }
414
415 static int
get_src_rsc(struct src_mgr * mgr,const struct src_desc * desc,struct src ** rsrc)416 get_src_rsc(struct src_mgr *mgr, const struct src_desc *desc, struct src **rsrc)
417 {
418 unsigned int idx = SRC_RESOURCE_NUM;
419 int err;
420 struct src *src;
421 unsigned long flags;
422
423 *rsrc = NULL;
424
425 /* Check whether there are sufficient src resources to meet request. */
426 spin_lock_irqsave(&mgr->mgr_lock, flags);
427 if (MEMRD == desc->mode)
428 err = mgr_get_resource(&mgr->mgr, desc->multi, &idx);
429 else
430 err = mgr_get_resource(&mgr->mgr, 1, &idx);
431
432 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
433 if (err) {
434 printk(KERN_ERR "ctxfi: Can't meet SRC resource request!\n");
435 return err;
436 }
437
438 /* Allocate mem for master src resource */
439 if (MEMRD == desc->mode)
440 src = kcalloc(desc->multi, sizeof(*src), GFP_KERNEL);
441 else
442 src = kzalloc(sizeof(*src), GFP_KERNEL);
443
444 if (!src) {
445 err = -ENOMEM;
446 goto error1;
447 }
448
449 err = src_rsc_init(src, idx, desc, mgr);
450 if (err)
451 goto error2;
452
453 *rsrc = src;
454
455 return 0;
456
457 error2:
458 kfree(src);
459 error1:
460 spin_lock_irqsave(&mgr->mgr_lock, flags);
461 if (MEMRD == desc->mode)
462 mgr_put_resource(&mgr->mgr, desc->multi, idx);
463 else
464 mgr_put_resource(&mgr->mgr, 1, idx);
465
466 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
467 return err;
468 }
469
put_src_rsc(struct src_mgr * mgr,struct src * src)470 static int put_src_rsc(struct src_mgr *mgr, struct src *src)
471 {
472 unsigned long flags;
473
474 spin_lock_irqsave(&mgr->mgr_lock, flags);
475 src->rsc.ops->master(&src->rsc);
476 if (MEMRD == src->mode)
477 mgr_put_resource(&mgr->mgr, src->multi,
478 src->rsc.ops->index(&src->rsc));
479 else
480 mgr_put_resource(&mgr->mgr, 1, src->rsc.ops->index(&src->rsc));
481
482 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
483 src_rsc_uninit(src, mgr);
484 kfree(src);
485
486 return 0;
487 }
488
src_enable_s(struct src_mgr * mgr,struct src * src)489 static int src_enable_s(struct src_mgr *mgr, struct src *src)
490 {
491 struct hw *hw = mgr->mgr.hw;
492 int i;
493
494 src->rsc.ops->master(&src->rsc);
495 for (i = 0; i < src->rsc.msr; i++) {
496 hw->src_mgr_enbs_src(mgr->mgr.ctrl_blk,
497 src->rsc.ops->index(&src->rsc));
498 src->rsc.ops->next_conj(&src->rsc);
499 }
500 src->rsc.ops->master(&src->rsc);
501
502 return 0;
503 }
504
src_enable(struct src_mgr * mgr,struct src * src)505 static int src_enable(struct src_mgr *mgr, struct src *src)
506 {
507 struct hw *hw = mgr->mgr.hw;
508 int i;
509
510 src->rsc.ops->master(&src->rsc);
511 for (i = 0; i < src->rsc.msr; i++) {
512 hw->src_mgr_enb_src(mgr->mgr.ctrl_blk,
513 src->rsc.ops->index(&src->rsc));
514 src->rsc.ops->next_conj(&src->rsc);
515 }
516 src->rsc.ops->master(&src->rsc);
517
518 return 0;
519 }
520
src_disable(struct src_mgr * mgr,struct src * src)521 static int src_disable(struct src_mgr *mgr, struct src *src)
522 {
523 struct hw *hw = mgr->mgr.hw;
524 int i;
525
526 src->rsc.ops->master(&src->rsc);
527 for (i = 0; i < src->rsc.msr; i++) {
528 hw->src_mgr_dsb_src(mgr->mgr.ctrl_blk,
529 src->rsc.ops->index(&src->rsc));
530 src->rsc.ops->next_conj(&src->rsc);
531 }
532 src->rsc.ops->master(&src->rsc);
533
534 return 0;
535 }
536
src_mgr_commit_write(struct src_mgr * mgr)537 static int src_mgr_commit_write(struct src_mgr *mgr)
538 {
539 struct hw *hw = mgr->mgr.hw;
540
541 hw->src_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
542
543 return 0;
544 }
545
src_mgr_create(void * hw,struct src_mgr ** rsrc_mgr)546 int src_mgr_create(void *hw, struct src_mgr **rsrc_mgr)
547 {
548 int err, i;
549 struct src_mgr *src_mgr;
550
551 *rsrc_mgr = NULL;
552 src_mgr = kzalloc(sizeof(*src_mgr), GFP_KERNEL);
553 if (!src_mgr)
554 return -ENOMEM;
555
556 err = rsc_mgr_init(&src_mgr->mgr, SRC, SRC_RESOURCE_NUM, hw);
557 if (err)
558 goto error1;
559
560 spin_lock_init(&src_mgr->mgr_lock);
561 conj_mask = ((struct hw *)hw)->src_dirty_conj_mask();
562
563 src_mgr->get_src = get_src_rsc;
564 src_mgr->put_src = put_src_rsc;
565 src_mgr->src_enable_s = src_enable_s;
566 src_mgr->src_enable = src_enable;
567 src_mgr->src_disable = src_disable;
568 src_mgr->commit_write = src_mgr_commit_write;
569
570 /* Disable all SRC resources. */
571 for (i = 0; i < 256; i++)
572 ((struct hw *)hw)->src_mgr_dsb_src(src_mgr->mgr.ctrl_blk, i);
573
574 ((struct hw *)hw)->src_mgr_commit_write(hw, src_mgr->mgr.ctrl_blk);
575
576 *rsrc_mgr = src_mgr;
577
578 return 0;
579
580 error1:
581 kfree(src_mgr);
582 return err;
583 }
584
src_mgr_destroy(struct src_mgr * src_mgr)585 int src_mgr_destroy(struct src_mgr *src_mgr)
586 {
587 rsc_mgr_uninit(&src_mgr->mgr);
588 kfree(src_mgr);
589
590 return 0;
591 }
592
593 /* SRCIMP resource manager operations */
594
srcimp_master(struct rsc * rsc)595 static int srcimp_master(struct rsc *rsc)
596 {
597 rsc->conj = 0;
598 return rsc->idx = container_of(rsc, struct srcimp, rsc)->idx[0];
599 }
600
srcimp_next_conj(struct rsc * rsc)601 static int srcimp_next_conj(struct rsc *rsc)
602 {
603 rsc->conj++;
604 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
605 }
606
srcimp_index(const struct rsc * rsc)607 static int srcimp_index(const struct rsc *rsc)
608 {
609 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
610 }
611
612 static struct rsc_ops srcimp_basic_rsc_ops = {
613 .master = srcimp_master,
614 .next_conj = srcimp_next_conj,
615 .index = srcimp_index,
616 .output_slot = NULL,
617 };
618
srcimp_map(struct srcimp * srcimp,struct src * src,struct rsc * input)619 static int srcimp_map(struct srcimp *srcimp, struct src *src, struct rsc *input)
620 {
621 struct imapper *entry;
622 int i;
623
624 srcimp->rsc.ops->master(&srcimp->rsc);
625 src->rsc.ops->master(&src->rsc);
626 input->ops->master(input);
627
628 /* Program master and conjugate resources */
629 for (i = 0; i < srcimp->rsc.msr; i++) {
630 entry = &srcimp->imappers[i];
631 entry->slot = input->ops->output_slot(input);
632 entry->user = src->rsc.ops->index(&src->rsc);
633 entry->addr = srcimp->rsc.ops->index(&srcimp->rsc);
634 srcimp->mgr->imap_add(srcimp->mgr, entry);
635 srcimp->mapped |= (0x1 << i);
636
637 srcimp->rsc.ops->next_conj(&srcimp->rsc);
638 input->ops->next_conj(input);
639 }
640
641 srcimp->rsc.ops->master(&srcimp->rsc);
642 input->ops->master(input);
643
644 return 0;
645 }
646
srcimp_unmap(struct srcimp * srcimp)647 static int srcimp_unmap(struct srcimp *srcimp)
648 {
649 int i;
650
651 /* Program master and conjugate resources */
652 for (i = 0; i < srcimp->rsc.msr; i++) {
653 if (srcimp->mapped & (0x1 << i)) {
654 srcimp->mgr->imap_delete(srcimp->mgr,
655 &srcimp->imappers[i]);
656 srcimp->mapped &= ~(0x1 << i);
657 }
658 }
659
660 return 0;
661 }
662
663 static struct srcimp_rsc_ops srcimp_ops = {
664 .map = srcimp_map,
665 .unmap = srcimp_unmap
666 };
667
srcimp_rsc_init(struct srcimp * srcimp,const struct srcimp_desc * desc,struct srcimp_mgr * mgr)668 static int srcimp_rsc_init(struct srcimp *srcimp,
669 const struct srcimp_desc *desc,
670 struct srcimp_mgr *mgr)
671 {
672 int err;
673
674 err = rsc_init(&srcimp->rsc, srcimp->idx[0],
675 SRCIMP, desc->msr, mgr->mgr.hw);
676 if (err)
677 return err;
678
679 /* Reserve memory for imapper nodes */
680 srcimp->imappers = kzalloc(sizeof(struct imapper)*desc->msr,
681 GFP_KERNEL);
682 if (!srcimp->imappers) {
683 err = -ENOMEM;
684 goto error1;
685 }
686
687 /* Set srcimp specific operations */
688 srcimp->rsc.ops = &srcimp_basic_rsc_ops;
689 srcimp->ops = &srcimp_ops;
690 srcimp->mgr = mgr;
691
692 srcimp->rsc.ops->master(&srcimp->rsc);
693
694 return 0;
695
696 error1:
697 rsc_uninit(&srcimp->rsc);
698 return err;
699 }
700
srcimp_rsc_uninit(struct srcimp * srcimp)701 static int srcimp_rsc_uninit(struct srcimp *srcimp)
702 {
703 if (NULL != srcimp->imappers) {
704 kfree(srcimp->imappers);
705 srcimp->imappers = NULL;
706 }
707 srcimp->ops = NULL;
708 srcimp->mgr = NULL;
709 rsc_uninit(&srcimp->rsc);
710
711 return 0;
712 }
713
get_srcimp_rsc(struct srcimp_mgr * mgr,const struct srcimp_desc * desc,struct srcimp ** rsrcimp)714 static int get_srcimp_rsc(struct srcimp_mgr *mgr,
715 const struct srcimp_desc *desc,
716 struct srcimp **rsrcimp)
717 {
718 int err, i;
719 unsigned int idx;
720 struct srcimp *srcimp;
721 unsigned long flags;
722
723 *rsrcimp = NULL;
724
725 /* Allocate mem for SRCIMP resource */
726 srcimp = kzalloc(sizeof(*srcimp), GFP_KERNEL);
727 if (!srcimp)
728 return -ENOMEM;
729
730 /* Check whether there are sufficient SRCIMP resources. */
731 err = 0;
732 spin_lock_irqsave(&mgr->mgr_lock, flags);
733 for (i = 0; i < desc->msr; i++) {
734 err = mgr_get_resource(&mgr->mgr, 1, &idx);
735 if (err)
736 break;
737
738 srcimp->idx[i] = idx;
739 }
740 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
741 if (err) {
742 printk(KERN_ERR "ctxfi: Can't meet SRCIMP resource request!\n");
743 goto error1;
744 }
745
746 err = srcimp_rsc_init(srcimp, desc, mgr);
747 if (err)
748 goto error1;
749
750 *rsrcimp = srcimp;
751
752 return 0;
753
754 error1:
755 spin_lock_irqsave(&mgr->mgr_lock, flags);
756 for (i--; i >= 0; i--)
757 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
758
759 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
760 kfree(srcimp);
761 return err;
762 }
763
put_srcimp_rsc(struct srcimp_mgr * mgr,struct srcimp * srcimp)764 static int put_srcimp_rsc(struct srcimp_mgr *mgr, struct srcimp *srcimp)
765 {
766 unsigned long flags;
767 int i;
768
769 spin_lock_irqsave(&mgr->mgr_lock, flags);
770 for (i = 0; i < srcimp->rsc.msr; i++)
771 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
772
773 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
774 srcimp_rsc_uninit(srcimp);
775 kfree(srcimp);
776
777 return 0;
778 }
779
srcimp_map_op(void * data,struct imapper * entry)780 static int srcimp_map_op(void *data, struct imapper *entry)
781 {
782 struct rsc_mgr *mgr = &((struct srcimp_mgr *)data)->mgr;
783 struct hw *hw = mgr->hw;
784
785 hw->srcimp_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
786 hw->srcimp_mgr_set_imapuser(mgr->ctrl_blk, entry->user);
787 hw->srcimp_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
788 hw->srcimp_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
789 hw->srcimp_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
790
791 return 0;
792 }
793
srcimp_imap_add(struct srcimp_mgr * mgr,struct imapper * entry)794 static int srcimp_imap_add(struct srcimp_mgr *mgr, struct imapper *entry)
795 {
796 unsigned long flags;
797 int err;
798
799 spin_lock_irqsave(&mgr->imap_lock, flags);
800 if ((0 == entry->addr) && (mgr->init_imap_added)) {
801 input_mapper_delete(&mgr->imappers,
802 mgr->init_imap, srcimp_map_op, mgr);
803 mgr->init_imap_added = 0;
804 }
805 err = input_mapper_add(&mgr->imappers, entry, srcimp_map_op, mgr);
806 spin_unlock_irqrestore(&mgr->imap_lock, flags);
807
808 return err;
809 }
810
srcimp_imap_delete(struct srcimp_mgr * mgr,struct imapper * entry)811 static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry)
812 {
813 unsigned long flags;
814 int err;
815
816 spin_lock_irqsave(&mgr->imap_lock, flags);
817 err = input_mapper_delete(&mgr->imappers, entry, srcimp_map_op, mgr);
818 if (list_empty(&mgr->imappers)) {
819 input_mapper_add(&mgr->imappers, mgr->init_imap,
820 srcimp_map_op, mgr);
821 mgr->init_imap_added = 1;
822 }
823 spin_unlock_irqrestore(&mgr->imap_lock, flags);
824
825 return err;
826 }
827
srcimp_mgr_create(void * hw,struct srcimp_mgr ** rsrcimp_mgr)828 int srcimp_mgr_create(void *hw, struct srcimp_mgr **rsrcimp_mgr)
829 {
830 int err;
831 struct srcimp_mgr *srcimp_mgr;
832 struct imapper *entry;
833
834 *rsrcimp_mgr = NULL;
835 srcimp_mgr = kzalloc(sizeof(*srcimp_mgr), GFP_KERNEL);
836 if (!srcimp_mgr)
837 return -ENOMEM;
838
839 err = rsc_mgr_init(&srcimp_mgr->mgr, SRCIMP, SRCIMP_RESOURCE_NUM, hw);
840 if (err)
841 goto error1;
842
843 spin_lock_init(&srcimp_mgr->mgr_lock);
844 spin_lock_init(&srcimp_mgr->imap_lock);
845 INIT_LIST_HEAD(&srcimp_mgr->imappers);
846 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
847 if (!entry) {
848 err = -ENOMEM;
849 goto error2;
850 }
851 entry->slot = entry->addr = entry->next = entry->user = 0;
852 list_add(&entry->list, &srcimp_mgr->imappers);
853 srcimp_mgr->init_imap = entry;
854 srcimp_mgr->init_imap_added = 1;
855
856 srcimp_mgr->get_srcimp = get_srcimp_rsc;
857 srcimp_mgr->put_srcimp = put_srcimp_rsc;
858 srcimp_mgr->imap_add = srcimp_imap_add;
859 srcimp_mgr->imap_delete = srcimp_imap_delete;
860
861 *rsrcimp_mgr = srcimp_mgr;
862
863 return 0;
864
865 error2:
866 rsc_mgr_uninit(&srcimp_mgr->mgr);
867 error1:
868 kfree(srcimp_mgr);
869 return err;
870 }
871
srcimp_mgr_destroy(struct srcimp_mgr * srcimp_mgr)872 int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr)
873 {
874 unsigned long flags;
875
876 /* free src input mapper list */
877 spin_lock_irqsave(&srcimp_mgr->imap_lock, flags);
878 free_input_mapper_list(&srcimp_mgr->imappers);
879 spin_unlock_irqrestore(&srcimp_mgr->imap_lock, flags);
880
881 rsc_mgr_uninit(&srcimp_mgr->mgr);
882 kfree(srcimp_mgr);
883
884 return 0;
885 }
886