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-rw-r--r--sound/pci/ctxfi/ctsrc.c886
1 files changed, 886 insertions, 0 deletions
diff --git a/sound/pci/ctxfi/ctsrc.c b/sound/pci/ctxfi/ctsrc.c
new file mode 100644
index 000000000000..d3e0ad5ed9fb
--- /dev/null
+++ b/sound/pci/ctxfi/ctsrc.c
@@ -0,0 +1,886 @@
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 64
24#define SRCIMP_RESOURCE_NUM 256
25
26static unsigned int conj_mask;
27
28static int src_default_config_memrd(struct src *src);
29static int src_default_config_memwr(struct src *src);
30static int src_default_config_arcrw(struct src *src);
31
32static 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
38static int src_set_state(struct src *src, unsigned int state)
39{
40 struct hw *hw = NULL;
41
42 hw = (struct hw *)src->rsc.hw;
43 hw->src_set_state(src->rsc.ctrl_blk, state);
44
45 return 0;
46}
47
48static int src_set_bm(struct src *src, unsigned int bm)
49{
50 struct hw *hw = NULL;
51
52 hw = (struct hw *)src->rsc.hw;
53 hw->src_set_bm(src->rsc.ctrl_blk, bm);
54
55 return 0;
56}
57
58static int src_set_sf(struct src *src, unsigned int sf)
59{
60 struct hw *hw = NULL;
61
62 hw = (struct hw *)src->rsc.hw;
63 hw->src_set_sf(src->rsc.ctrl_blk, sf);
64
65 return 0;
66}
67
68static int src_set_pm(struct src *src, unsigned int pm)
69{
70 struct hw *hw = NULL;
71
72 hw = (struct hw *)src->rsc.hw;
73 hw->src_set_pm(src->rsc.ctrl_blk, pm);
74
75 return 0;
76}
77
78static int src_set_rom(struct src *src, unsigned int rom)
79{
80 struct hw *hw = NULL;
81
82 hw = (struct hw *)src->rsc.hw;
83 hw->src_set_rom(src->rsc.ctrl_blk, rom);
84
85 return 0;
86}
87
88static int src_set_vo(struct src *src, unsigned int vo)
89{
90 struct hw *hw = NULL;
91
92 hw = (struct hw *)src->rsc.hw;
93 hw->src_set_vo(src->rsc.ctrl_blk, vo);
94
95 return 0;
96}
97
98static int src_set_st(struct src *src, unsigned int st)
99{
100 struct hw *hw = NULL;
101
102 hw = (struct hw *)src->rsc.hw;
103 hw->src_set_st(src->rsc.ctrl_blk, st);
104
105 return 0;
106}
107
108static int src_set_bp(struct src *src, unsigned int bp)
109{
110 struct hw *hw = NULL;
111
112 hw = (struct hw *)src->rsc.hw;
113 hw->src_set_bp(src->rsc.ctrl_blk, bp);
114
115 return 0;
116}
117
118static int src_set_cisz(struct src *src, unsigned int cisz)
119{
120 struct hw *hw = NULL;
121
122 hw = (struct hw *)src->rsc.hw;
123 hw->src_set_cisz(src->rsc.ctrl_blk, cisz);
124
125 return 0;
126}
127
128static int src_set_ca(struct src *src, unsigned int ca)
129{
130 struct hw *hw = NULL;
131
132 hw = (struct hw *)src->rsc.hw;
133 hw->src_set_ca(src->rsc.ctrl_blk, ca);
134
135 return 0;
136}
137
138static int src_set_sa(struct src *src, unsigned int sa)
139{
140 struct hw *hw = NULL;
141
142 hw = (struct hw *)src->rsc.hw;
143 hw->src_set_sa(src->rsc.ctrl_blk, sa);
144
145 return 0;
146}
147
148static int src_set_la(struct src *src, unsigned int la)
149{
150 struct hw *hw = NULL;
151
152 hw = (struct hw *)src->rsc.hw;
153 hw->src_set_la(src->rsc.ctrl_blk, la);
154
155 return 0;
156}
157
158static int src_set_pitch(struct src *src, unsigned int pitch)
159{
160 struct hw *hw = NULL;
161
162 hw = (struct hw *)src->rsc.hw;
163 hw->src_set_pitch(src->rsc.ctrl_blk, pitch);
164
165 return 0;
166}
167
168static int src_set_clear_zbufs(struct src *src)
169{
170 struct hw *hw = NULL;
171
172 hw = (struct hw *)src->rsc.hw;
173 hw->src_set_clear_zbufs(src->rsc.ctrl_blk, 1);
174
175 return 0;
176}
177
178static int src_commit_write(struct src *src)
179{
180 struct hw *hw = NULL;
181 int i = 0;
182 unsigned int dirty = 0;
183
184 hw = (struct 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
208static int src_get_ca(struct src *src)
209{
210 struct hw *hw = NULL;
211
212 hw = (struct hw *)src->rsc.hw;
213 return hw->src_get_ca(hw, src->rsc.ops->index(&src->rsc),
214 src->rsc.ctrl_blk);
215}
216
217static int src_init(struct src *src)
218{
219 src_default_config[src->mode](src);
220
221 return 0;
222}
223
224static struct src *src_next_interleave(struct src *src)
225{
226 return src->intlv;
227}
228
229static int src_default_config_memrd(struct src *src)
230{
231 struct hw *hw = src->rsc.hw;
232 unsigned int rsr = 0, msr = 0;
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
269static 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
297static int src_default_config_arcrw(struct src *src)
298{
299 struct hw *hw = src->rsc.hw;
300 unsigned int rsr = 0, msr = 0;
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
338static 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
359static int
360src_rsc_init(struct src *src, u32 idx,
361 const struct src_desc *desc, struct src_mgr *mgr)
362{
363 int err = 0;
364 int i = 0, n = 0;
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
387error1:
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
396static int src_rsc_uninit(struct src *src, struct src_mgr *mgr)
397{
398 int i = 0, n = 0;
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
415static int
416get_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 = 0;
420 struct src *src = NULL;
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 "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 = kzalloc(sizeof(*src)*desc->multi, GFP_KERNEL);
441 else
442 src = kzalloc(sizeof(*src), GFP_KERNEL);
443
444 if (NULL == 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
457error2:
458 kfree(src);
459error1:
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
470static 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
489static int src_enable_s(struct src_mgr *mgr, struct src *src)
490{
491 struct hw *hw = mgr->mgr.hw;
492 int i = 0;
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
505static int src_enable(struct src_mgr *mgr, struct src *src)
506{
507 struct hw *hw = mgr->mgr.hw;
508 int i = 0;
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
521static int src_disable(struct src_mgr *mgr, struct src *src)
522{
523 struct hw *hw = mgr->mgr.hw;
524 int i = 0;
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
537static 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
546int src_mgr_create(void *hw, struct src_mgr **rsrc_mgr)
547{
548 int err = 0, i = 0;
549 struct src_mgr *src_mgr;
550
551 *rsrc_mgr = NULL;
552 src_mgr = kzalloc(sizeof(*src_mgr), GFP_KERNEL);
553 if (NULL == 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
580error1:
581 kfree(src_mgr);
582 return err;
583}
584
585int 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
595static 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
601static int srcimp_next_conj(struct rsc *rsc)
602{
603 rsc->conj++;
604 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
605}
606
607static int srcimp_index(const struct rsc *rsc)
608{
609 return container_of(rsc, struct srcimp, rsc)->idx[rsc->conj];
610}
611
612static 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
619static int srcimp_map(struct srcimp *srcimp, struct src *src, struct rsc *input)
620{
621 struct imapper *entry = NULL;
622 int i = 0;
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
647static int srcimp_unmap(struct srcimp *srcimp)
648{
649 int i = 0;
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
663static struct srcimp_rsc_ops srcimp_ops = {
664 .map = srcimp_map,
665 .unmap = srcimp_unmap
666};
667
668static int srcimp_rsc_init(struct srcimp *srcimp,
669 const struct srcimp_desc *desc,
670 struct srcimp_mgr *mgr)
671{
672 int err = 0;
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 (NULL == 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
696error1:
697 rsc_uninit(&srcimp->rsc);
698 return err;
699}
700
701static 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
714static int get_srcimp_rsc(struct srcimp_mgr *mgr,
715 const struct srcimp_desc *desc,
716 struct srcimp **rsrcimp)
717{
718 int err = 0, i = 0;
719 unsigned int idx = 0;
720 struct srcimp *srcimp = NULL;
721 unsigned long flags;
722
723 *rsrcimp = NULL;
724
725 /* Allocate mem for SRCIMP resource */
726 srcimp = kzalloc(sizeof(*srcimp), GFP_KERNEL);
727 if (NULL == srcimp) {
728 err = -ENOMEM;
729 return err;
730 }
731
732 /* Check whether there are sufficient SRCIMP resources. */
733 spin_lock_irqsave(&mgr->mgr_lock, flags);
734 for (i = 0; i < desc->msr; i++) {
735 err = mgr_get_resource(&mgr->mgr, 1, &idx);
736 if (err)
737 break;
738
739 srcimp->idx[i] = idx;
740 }
741 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
742 if (err) {
743 printk(KERN_ERR "Can't meet SRCIMP resource request!\n");
744 goto error1;
745 }
746
747 err = srcimp_rsc_init(srcimp, desc, mgr);
748 if (err)
749 goto error1;
750
751 *rsrcimp = srcimp;
752
753 return 0;
754
755error1:
756 spin_lock_irqsave(&mgr->mgr_lock, flags);
757 for (i--; i >= 0; i--)
758 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
759
760 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
761 kfree(srcimp);
762 return err;
763}
764
765static int put_srcimp_rsc(struct srcimp_mgr *mgr, struct srcimp *srcimp)
766{
767 unsigned long flags;
768 int i = 0;
769
770 spin_lock_irqsave(&mgr->mgr_lock, flags);
771 for (i = 0; i < srcimp->rsc.msr; i++)
772 mgr_put_resource(&mgr->mgr, 1, srcimp->idx[i]);
773
774 spin_unlock_irqrestore(&mgr->mgr_lock, flags);
775 srcimp_rsc_uninit(srcimp);
776 kfree(srcimp);
777
778 return 0;
779}
780
781static int srcimp_map_op(void *data, struct imapper *entry)
782{
783 struct rsc_mgr *mgr = &((struct srcimp_mgr *)data)->mgr;
784 struct hw *hw = mgr->hw;
785
786 hw->srcimp_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
787 hw->srcimp_mgr_set_imapuser(mgr->ctrl_blk, entry->user);
788 hw->srcimp_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
789 hw->srcimp_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
790 hw->srcimp_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
791
792 return 0;
793}
794
795static int srcimp_imap_add(struct srcimp_mgr *mgr, struct imapper *entry)
796{
797 unsigned long flags;
798 int err = 0;
799
800 spin_lock_irqsave(&mgr->imap_lock, flags);
801 if ((0 == entry->addr) && (mgr->init_imap_added)) {
802 input_mapper_delete(&mgr->imappers,
803 mgr->init_imap, srcimp_map_op, mgr);
804 mgr->init_imap_added = 0;
805 }
806 err = input_mapper_add(&mgr->imappers, entry, srcimp_map_op, mgr);
807 spin_unlock_irqrestore(&mgr->imap_lock, flags);
808
809 return err;
810}
811
812static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry)
813{
814 unsigned long flags;
815 int err = 0;
816
817 spin_lock_irqsave(&mgr->imap_lock, flags);
818 err = input_mapper_delete(&mgr->imappers, entry, srcimp_map_op, mgr);
819 if (list_empty(&mgr->imappers)) {
820 input_mapper_add(&mgr->imappers, mgr->init_imap,
821 srcimp_map_op, mgr);
822 mgr->init_imap_added = 1;
823 }
824 spin_unlock_irqrestore(&mgr->imap_lock, flags);
825
826 return err;
827}
828
829int srcimp_mgr_create(void *hw, struct srcimp_mgr **rsrcimp_mgr)
830{
831 int err = 0;
832 struct srcimp_mgr *srcimp_mgr;
833 struct imapper *entry;
834
835 *rsrcimp_mgr = NULL;
836 srcimp_mgr = kzalloc(sizeof(*srcimp_mgr), GFP_KERNEL);
837 if (NULL == srcimp_mgr)
838 return -ENOMEM;
839
840 err = rsc_mgr_init(&srcimp_mgr->mgr, SRCIMP, SRCIMP_RESOURCE_NUM, hw);
841 if (err)
842 goto error1;
843
844 spin_lock_init(&srcimp_mgr->mgr_lock);
845 spin_lock_init(&srcimp_mgr->imap_lock);
846 INIT_LIST_HEAD(&srcimp_mgr->imappers);
847 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
848 if (NULL == entry) {
849 err = -ENOMEM;
850 goto error2;
851 }
852 entry->slot = entry->addr = entry->next = entry->user = 0;
853 list_add(&entry->list, &srcimp_mgr->imappers);
854 srcimp_mgr->init_imap = entry;
855 srcimp_mgr->init_imap_added = 1;
856
857 srcimp_mgr->get_srcimp = get_srcimp_rsc;
858 srcimp_mgr->put_srcimp = put_srcimp_rsc;
859 srcimp_mgr->imap_add = srcimp_imap_add;
860 srcimp_mgr->imap_delete = srcimp_imap_delete;
861
862 *rsrcimp_mgr = srcimp_mgr;
863
864 return 0;
865
866error2:
867 rsc_mgr_uninit(&srcimp_mgr->mgr);
868error1:
869 kfree(srcimp_mgr);
870 return err;
871}
872
873int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr)
874{
875 unsigned long flags;
876
877 /* free src input mapper list */
878 spin_lock_irqsave(&srcimp_mgr->imap_lock, flags);
879 free_input_mapper_list(&srcimp_mgr->imappers);
880 spin_unlock_irqrestore(&srcimp_mgr->imap_lock, flags);
881
882 rsc_mgr_uninit(&srcimp_mgr->mgr);
883 kfree(srcimp_mgr);
884
885 return 0;
886}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 00:47:51 -0500