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; 41 42 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; 51 52 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; 61 62 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; 71 72 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; 81 82 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; 91 92 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; 101 102 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; 111 112 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; 121 122 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; 131 132 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; 141 142 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; 151 152 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; 161 162 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; 171 172 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; 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 208static 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 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, 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 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, 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 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; 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 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, 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 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; 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 = kzalloc(sizeof(*src)*desc->multi, 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 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; 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; 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; 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, 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 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; 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 647static 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 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; 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 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, 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 754error1: 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 764static 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 780static 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 794static 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 811static 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 828int 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 865error2: 866 rsc_mgr_uninit(&srcimp_mgr->mgr); 867error1: 868 kfree(srcimp_mgr); 869 return err; 870} 871 872int 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