sound/pci/ctxfi/ctdaio.c

   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        ctdaio.c
   9  *
  10  * @Brief
  11  * This file contains the implementation of Digital Audio Input Output
  12  * resource management object.
  13  *
  14  * @Author      Liu Chun
  15  * @Date        May 23 2008
  16  *
  17  */
  18
  19 #include "ctdaio.h"
  20 #include "cthardware.h"
  21 #include "ctimap.h"
  22 #include <linux/slab.h>
  23 #include <linux/kernel.h>
  24
  25 #define DAIO_RESOURCE_NUM       NUM_DAIOTYP
  26 #define DAIO_OUT_MAX            SPDIFOO
  27
  28 union daio_usage {
  29         struct {
  30                 unsigned short lineo1:1;
  31                 unsigned short lineo2:1;
  32                 unsigned short lineo3:1;
  33                 unsigned short lineo4:1;
  34                 unsigned short spdifoo:1;
  35                 unsigned short lineim:1;
  36                 unsigned short spdifio:1;
  37                 unsigned short spdifi1:1;
  38         } bf;
  39         unsigned short data;
  40 };
  41
  42 struct daio_rsc_idx {
  43         unsigned short left;
  44         unsigned short right;
  45 };
  46
  47 struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
  48         [LINEO1] = {.left = 0x00, .right = 0x01},
  49         [LINEO2] = {.left = 0x18, .right = 0x19},
  50         [LINEO3] = {.left = 0x08, .right = 0x09},
  51         [LINEO4] = {.left = 0x10, .right = 0x11},
  52         [LINEIM] = {.left = 0x1b5, .right = 0x1bd},
  53         [SPDIFOO] = {.left = 0x20, .right = 0x21},
  54         [SPDIFIO] = {.left = 0x15, .right = 0x1d},
  55         [SPDIFI1] = {.left = 0x95, .right = 0x9d},
  56 };
  57
  58 struct daio_rsc_idx idx_20k2[NUM_DAIOTYP] = {
  59         [LINEO1] = {.left = 0x40, .right = 0x41},
  60         [LINEO2] = {.left = 0x60, .right = 0x61},
  61         [LINEO3] = {.left = 0x50, .right = 0x51},
  62         [LINEO4] = {.left = 0x70, .right = 0x71},
  63         [LINEIM] = {.left = 0x45, .right = 0xc5},
  64         [SPDIFOO] = {.left = 0x00, .right = 0x01},
  65         [SPDIFIO] = {.left = 0x05, .right = 0x85},
  66 };
  67
  68 static int daio_master(struct rsc *rsc)
  69 {
  70         /* Actually, this is not the resource index of DAIO.
  71          * For DAO, it is the input mapper index. And, for DAI,
  72          * it is the output time-slot index. */
  73         return rsc->conj = rsc->idx;
  74 }
  75
  76 static int daio_index(const struct rsc *rsc)
  77 {
  78         return rsc->conj;
  79 }
  80
  81 static int daio_out_next_conj(struct rsc *rsc)
  82 {
  83         return rsc->conj += 2;
  84 }
  85
  86 static int daio_in_next_conj_20k1(struct rsc *rsc)
  87 {
  88         return rsc->conj += 0x200;
  89 }
  90
  91 static int daio_in_next_conj_20k2(struct rsc *rsc)
  92 {
  93         return rsc->conj += 0x100;
  94 }
  95
  96 static struct rsc_ops daio_out_rsc_ops = {
  97         .master         = daio_master,
  98         .next_conj      = daio_out_next_conj,
  99         .index          = daio_index,
 100         .output_slot    = NULL,
 101 };
 102
 103 static struct rsc_ops daio_in_rsc_ops_20k1 = {
 104         .master         = daio_master,
 105         .next_conj      = daio_in_next_conj_20k1,
 106         .index          = NULL,
 107         .output_slot    = daio_index,
 108 };
 109
 110 static struct rsc_ops daio_in_rsc_ops_20k2 = {
 111         .master         = daio_master,
 112         .next_conj      = daio_in_next_conj_20k2,
 113         .index          = NULL,
 114         .output_slot    = daio_index,
 115 };
 116
 117 static unsigned int daio_device_index(enum DAIOTYP type, struct hw *hw)
 118 {
 119         switch (hw->chip_type) {
 120         case ATC20K1:
 121                 switch (type) {
 122                 case SPDIFOO:   return 0;
 123                 case SPDIFIO:   return 0;
 124                 case SPDIFI1:   return 1;
 125                 case LINEO1:    return 4;
 126                 case LINEO2:    return 7;
 127                 case LINEO3:    return 5;
 128                 case LINEO4:    return 6;
 129                 case LINEIM:    return 7;
 130                 default:        return -EINVAL;
 131                 }
 132         case ATC20K2:
 133                 switch (type) {
 134                 case SPDIFOO:   return 0;
 135                 case SPDIFIO:   return 0;
 136                 case LINEO1:    return 4;
 137                 case LINEO2:    return 7;
 138                 case LINEO3:    return 5;
 139                 case LINEO4:    return 6;
 140                 case LINEIM:    return 4;
 141                 default:        return -EINVAL;
 142                 }
 143         default:
 144                 return -EINVAL;
 145         }
 146 }
 147
 148 static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc);
 149
 150 static int dao_spdif_get_spos(struct dao *dao, unsigned int *spos)
 151 {
 152         ((struct hw *)dao->hw)->dao_get_spos(dao->ctrl_blk, spos);
 153         return 0;
 154 }
 155
 156 static int dao_spdif_set_spos(struct dao *dao, unsigned int spos)
 157 {
 158         ((struct hw *)dao->hw)->dao_set_spos(dao->ctrl_blk, spos);
 159         return 0;
 160 }
 161
 162 static int dao_commit_write(struct dao *dao)
 163 {
 164         ((struct hw *)dao->hw)->dao_commit_write(dao->hw,
 165                 daio_device_index(dao->daio.type, dao->hw), dao->ctrl_blk);
 166         return 0;
 167 }
 168
 169 static int dao_set_left_input(struct dao *dao, struct rsc *input)
 170 {
 171         struct imapper *entry;
 172         struct daio *daio = &dao->daio;
 173         int i;
 174
 175         entry = kzalloc((sizeof(*entry) * daio->rscl.msr), GFP_KERNEL);
 176         if (!entry)
 177                 return -ENOMEM;
 178
 179         /* Program master and conjugate resources */
 180         input->ops->master(input);
 181         daio->rscl.ops->master(&daio->rscl);
 182         for (i = 0; i < daio->rscl.msr; i++, entry++) {
 183                 entry->slot = input->ops->output_slot(input);
 184                 entry->user = entry->addr = daio->rscl.ops->index(&daio->rscl);
 185                 dao->mgr->imap_add(dao->mgr, entry);
 186                 dao->imappers[i] = entry;
 187
 188                 input->ops->next_conj(input);
 189                 daio->rscl.ops->next_conj(&daio->rscl);
 190         }
 191         input->ops->master(input);
 192         daio->rscl.ops->master(&daio->rscl);
 193
 194         return 0;
 195 }
 196
 197 static int dao_set_right_input(struct dao *dao, struct rsc *input)
 198 {
 199         struct imapper *entry;
 200         struct daio *daio = &dao->daio;
 201         int i;
 202
 203         entry = kzalloc((sizeof(*entry) * daio->rscr.msr), GFP_KERNEL);
 204         if (!entry)
 205                 return -ENOMEM;
 206
 207         /* Program master and conjugate resources */
 208         input->ops->master(input);
 209         daio->rscr.ops->master(&daio->rscr);
 210         for (i = 0; i < daio->rscr.msr; i++, entry++) {
 211                 entry->slot = input->ops->output_slot(input);
 212                 entry->user = entry->addr = daio->rscr.ops->index(&daio->rscr);
 213                 dao->mgr->imap_add(dao->mgr, entry);
 214                 dao->imappers[daio->rscl.msr + i] = entry;
 215
 216                 input->ops->next_conj(input);
 217                 daio->rscr.ops->next_conj(&daio->rscr);
 218         }
 219         input->ops->master(input);
 220         daio->rscr.ops->master(&daio->rscr);
 221
 222         return 0;
 223 }
 224
 225 static int dao_clear_left_input(struct dao *dao)
 226 {
 227         struct imapper *entry;
 228         struct daio *daio = &dao->daio;
 229         int i;
 230
 231         if (!dao->imappers[0])
 232                 return 0;
 233
 234         entry = dao->imappers[0];
 235         dao->mgr->imap_delete(dao->mgr, entry);
 236         /* Program conjugate resources */
 237         for (i = 1; i < daio->rscl.msr; i++) {
 238                 entry = dao->imappers[i];
 239                 dao->mgr->imap_delete(dao->mgr, entry);
 240                 dao->imappers[i] = NULL;
 241         }
 242
 243         kfree(dao->imappers[0]);
 244         dao->imappers[0] = NULL;
 245
 246         return 0;
 247 }
 248
 249 static int dao_clear_right_input(struct dao *dao)
 250 {
 251         struct imapper *entry;
 252         struct daio *daio = &dao->daio;
 253         int i;
 254
 255         if (!dao->imappers[daio->rscl.msr])
 256                 return 0;
 257
 258         entry = dao->imappers[daio->rscl.msr];
 259         dao->mgr->imap_delete(dao->mgr, entry);
 260         /* Program conjugate resources */
 261         for (i = 1; i < daio->rscr.msr; i++) {
 262                 entry = dao->imappers[daio->rscl.msr + i];
 263                 dao->mgr->imap_delete(dao->mgr, entry);
 264                 dao->imappers[daio->rscl.msr + i] = NULL;
 265         }
 266
 267         kfree(dao->imappers[daio->rscl.msr]);
 268         dao->imappers[daio->rscl.msr] = NULL;
 269
 270         return 0;
 271 }
 272
 273 static struct dao_rsc_ops dao_ops = {
 274         .set_spos               = dao_spdif_set_spos,
 275         .commit_write           = dao_commit_write,
 276         .get_spos               = dao_spdif_get_spos,
 277         .reinit                 = dao_rsc_reinit,
 278         .set_left_input         = dao_set_left_input,
 279         .set_right_input        = dao_set_right_input,
 280         .clear_left_input       = dao_clear_left_input,
 281         .clear_right_input      = dao_clear_right_input,
 282 };
 283
 284 static int dai_set_srt_srcl(struct dai *dai, struct rsc *src)
 285 {
 286         src->ops->master(src);
 287         ((struct hw *)dai->hw)->dai_srt_set_srcm(dai->ctrl_blk,
 288                                                 src->ops->index(src));
 289         return 0;
 290 }
 291
 292 static int dai_set_srt_srcr(struct dai *dai, struct rsc *src)
 293 {
 294         src->ops->master(src);
 295         ((struct hw *)dai->hw)->dai_srt_set_srco(dai->ctrl_blk,
 296                                                 src->ops->index(src));
 297         return 0;
 298 }
 299
 300 static int dai_set_srt_msr(struct dai *dai, unsigned int msr)
 301 {
 302         unsigned int rsr;
 303
 304         for (rsr = 0; msr > 1; msr >>= 1)
 305                 rsr++;
 306
 307         ((struct hw *)dai->hw)->dai_srt_set_rsr(dai->ctrl_blk, rsr);
 308         return 0;
 309 }
 310
 311 static int dai_set_enb_src(struct dai *dai, unsigned int enb)
 312 {
 313         ((struct hw *)dai->hw)->dai_srt_set_ec(dai->ctrl_blk, enb);
 314         return 0;
 315 }
 316
 317 static int dai_set_enb_srt(struct dai *dai, unsigned int enb)
 318 {
 319         ((struct hw *)dai->hw)->dai_srt_set_et(dai->ctrl_blk, enb);
 320         return 0;
 321 }
 322
 323 static int dai_commit_write(struct dai *dai)
 324 {
 325         ((struct hw *)dai->hw)->dai_commit_write(dai->hw,
 326                 daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
 327         return 0;
 328 }
 329
 330 static struct dai_rsc_ops dai_ops = {
 331         .set_srt_srcl           = dai_set_srt_srcl,
 332         .set_srt_srcr           = dai_set_srt_srcr,
 333         .set_srt_msr            = dai_set_srt_msr,
 334         .set_enb_src            = dai_set_enb_src,
 335         .set_enb_srt            = dai_set_enb_srt,
 336         .commit_write           = dai_commit_write,
 337 };
 338
 339 static int daio_rsc_init(struct daio *daio,
 340                          const struct daio_desc *desc,
 341                          void *hw)
 342 {
 343         int err;
 344         unsigned int idx_l, idx_r;
 345
 346         switch (((struct hw *)hw)->chip_type) {
 347         case ATC20K1:
 348                 idx_l = idx_20k1[desc->type].left;
 349                 idx_r = idx_20k1[desc->type].right;
 350                 break;
 351         case ATC20K2:
 352                 idx_l = idx_20k2[desc->type].left;
 353                 idx_r = idx_20k2[desc->type].right;
 354                 break;
 355         default:
 356                 return -EINVAL;
 357         }
 358         err = rsc_init(&daio->rscl, idx_l, DAIO, desc->msr, hw);
 359         if (err)
 360                 return err;
 361
 362         err = rsc_init(&daio->rscr, idx_r, DAIO, desc->msr, hw);
 363         if (err)
 364                 goto error1;
 365
 366         /* Set daio->rscl/r->ops to daio specific ones */
 367         if (desc->type <= DAIO_OUT_MAX) {
 368                 daio->rscl.ops = daio->rscr.ops = &daio_out_rsc_ops;
 369         } else {
 370                 switch (((struct hw *)hw)->chip_type) {
 371                 case ATC20K1:
 372                         daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k1;
 373                         break;
 374                 case ATC20K2:
 375                         daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k2;
 376                         break;
 377                 default:
 378                         break;
 379                 }
 380         }
 381         daio->type = desc->type;
 382
 383         return 0;
 384
 385 error1:
 386         rsc_uninit(&daio->rscl);
 387         return err;
 388 }
 389
 390 static int daio_rsc_uninit(struct daio *daio)
 391 {
 392         rsc_uninit(&daio->rscl);
 393         rsc_uninit(&daio->rscr);
 394
 395         return 0;
 396 }
 397
 398 static int dao_rsc_init(struct dao *dao,
 399                         const struct daio_desc *desc,
 400                         struct daio_mgr *mgr)
 401 {
 402         struct hw *hw = mgr->mgr.hw;
 403         unsigned int conf;
 404         int err;
 405
 406         err = daio_rsc_init(&dao->daio, desc, mgr->mgr.hw);
 407         if (err)
 408                 return err;
 409
 410         dao->imappers = kzalloc(sizeof(void *)*desc->msr*2, GFP_KERNEL);
 411         if (!dao->imappers) {
 412                 err = -ENOMEM;
 413                 goto error1;
 414         }
 415         dao->ops = &dao_ops;
 416         dao->mgr = mgr;
 417         dao->hw = hw;
 418         err = hw->dao_get_ctrl_blk(&dao->ctrl_blk);
 419         if (err)
 420                 goto error2;
 421
 422         hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
 423                         daio_device_index(dao->daio.type, hw));
 424         hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 425
 426         conf = (desc->msr & 0x7) | (desc->passthru << 3);
 427         hw->daio_mgr_dao_init(mgr->mgr.ctrl_blk,
 428                         daio_device_index(dao->daio.type, hw), conf);
 429         hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
 430                         daio_device_index(dao->daio.type, hw));
 431         hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 432
 433         return 0;
 434
 435 error2:
 436         kfree(dao->imappers);
 437         dao->imappers = NULL;
 438 error1:
 439         daio_rsc_uninit(&dao->daio);
 440         return err;
 441 }
 442
 443 static int dao_rsc_uninit(struct dao *dao)
 444 {
 445         if (dao->imappers) {
 446                 if (dao->imappers[0])
 447                         dao_clear_left_input(dao);
 448
 449                 if (dao->imappers[dao->daio.rscl.msr])
 450                         dao_clear_right_input(dao);
 451
 452                 kfree(dao->imappers);
 453                 dao->imappers = NULL;
 454         }
 455         ((struct hw *)dao->hw)->dao_put_ctrl_blk(dao->ctrl_blk);
 456         dao->hw = dao->ctrl_blk = NULL;
 457         daio_rsc_uninit(&dao->daio);
 458
 459         return 0;
 460 }
 461
 462 static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc)
 463 {
 464         struct daio_mgr *mgr = dao->mgr;
 465         struct daio_desc dsc = {0};
 466
 467         dsc.type = dao->daio.type;
 468         dsc.msr = desc->msr;
 469         dsc.passthru = desc->passthru;
 470         dao_rsc_uninit(dao);
 471         return dao_rsc_init(dao, &dsc, mgr);
 472 }
 473
 474 static int dai_rsc_init(struct dai *dai,
 475                         const struct daio_desc *desc,
 476                         struct daio_mgr *mgr)
 477 {
 478         int err;
 479         struct hw *hw = mgr->mgr.hw;
 480         unsigned int rsr, msr;
 481
 482         err = daio_rsc_init(&dai->daio, desc, mgr->mgr.hw);
 483         if (err)
 484                 return err;
 485
 486         dai->ops = &dai_ops;
 487         dai->hw = mgr->mgr.hw;
 488         err = hw->dai_get_ctrl_blk(&dai->ctrl_blk);
 489         if (err)
 490                 goto error1;
 491
 492         for (rsr = 0, msr = desc->msr; msr > 1; msr >>= 1)
 493                 rsr++;
 494
 495         hw->dai_srt_set_rsr(dai->ctrl_blk, rsr);
 496         hw->dai_srt_set_drat(dai->ctrl_blk, 0);
 497         /* default to disabling control of a SRC */
 498         hw->dai_srt_set_ec(dai->ctrl_blk, 0);
 499         hw->dai_srt_set_et(dai->ctrl_blk, 0); /* default to disabling SRT */
 500         hw->dai_commit_write(hw,
 501                 daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
 502
 503         return 0;
 504
 505 error1:
 506         daio_rsc_uninit(&dai->daio);
 507         return err;
 508 }
 509
 510 static int dai_rsc_uninit(struct dai *dai)
 511 {
 512         ((struct hw *)dai->hw)->dai_put_ctrl_blk(dai->ctrl_blk);
 513         dai->hw = dai->ctrl_blk = NULL;
 514         daio_rsc_uninit(&dai->daio);
 515         return 0;
 516 }
 517
 518 static int daio_mgr_get_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
 519 {
 520         if (((union daio_usage *)mgr->rscs)->data & (0x1 << type))
 521                 return -ENOENT;
 522
 523         ((union daio_usage *)mgr->rscs)->data |= (0x1 << type);
 524
 525         return 0;
 526 }
 527
 528 static int daio_mgr_put_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
 529 {
 530         ((union daio_usage *)mgr->rscs)->data &= ~(0x1 << type);
 531
 532         return 0;
 533 }
 534
 535 static int get_daio_rsc(struct daio_mgr *mgr,
 536                         const struct daio_desc *desc,
 537                         struct daio **rdaio)
 538 {
 539         int err;
 540         struct dai *dai = NULL;
 541         struct dao *dao = NULL;
 542         unsigned long flags;
 543
 544         *rdaio = NULL;
 545
 546         /* Check whether there are sufficient daio resources to meet request. */
 547         spin_lock_irqsave(&mgr->mgr_lock, flags);
 548         err = daio_mgr_get_rsc(&mgr->mgr, desc->type);
 549         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 550         if (err) {
 551                 printk(KERN_ERR "Can't meet DAIO resource request!\n");
 552                 return err;
 553         }
 554
 555         /* Allocate mem for daio resource */
 556         if (desc->type <= DAIO_OUT_MAX) {
 557                 dao = kzalloc(sizeof(*dao), GFP_KERNEL);
 558                 if (!dao) {
 559                         err = -ENOMEM;
 560                         goto error;
 561                 }
 562                 err = dao_rsc_init(dao, desc, mgr);
 563                 if (err)
 564                         goto error;
 565
 566                 *rdaio = &dao->daio;
 567         } else {
 568                 dai = kzalloc(sizeof(*dai), GFP_KERNEL);
 569                 if (!dai) {
 570                         err = -ENOMEM;
 571                         goto error;
 572                 }
 573                 err = dai_rsc_init(dai, desc, mgr);
 574                 if (err)
 575                         goto error;
 576
 577                 *rdaio = &dai->daio;
 578         }
 579
 580         mgr->daio_enable(mgr, *rdaio);
 581         mgr->commit_write(mgr);
 582
 583         return 0;
 584
 585 error:
 586         if (dao)
 587                 kfree(dao);
 588         else if (dai)
 589                 kfree(dai);
 590
 591         spin_lock_irqsave(&mgr->mgr_lock, flags);
 592         daio_mgr_put_rsc(&mgr->mgr, desc->type);
 593         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 594         return err;
 595 }
 596
 597 static int put_daio_rsc(struct daio_mgr *mgr, struct daio *daio)
 598 {
 599         unsigned long flags;
 600
 601         mgr->daio_disable(mgr, daio);
 602         mgr->commit_write(mgr);
 603
 604         spin_lock_irqsave(&mgr->mgr_lock, flags);
 605         daio_mgr_put_rsc(&mgr->mgr, daio->type);
 606         spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 607
 608         if (daio->type <= DAIO_OUT_MAX) {
 609                 dao_rsc_uninit(container_of(daio, struct dao, daio));
 610                 kfree(container_of(daio, struct dao, daio));
 611         } else {
 612                 dai_rsc_uninit(container_of(daio, struct dai, daio));
 613                 kfree(container_of(daio, struct dai, daio));
 614         }
 615
 616         return 0;
 617 }
 618
 619 static int daio_mgr_enb_daio(struct daio_mgr *mgr, struct daio *daio)
 620 {
 621         struct hw *hw = mgr->mgr.hw;
 622
 623         if (DAIO_OUT_MAX >= daio->type) {
 624                 hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
 625                                 daio_device_index(daio->type, hw));
 626         } else {
 627                 hw->daio_mgr_enb_dai(mgr->mgr.ctrl_blk,
 628                                 daio_device_index(daio->type, hw));
 629         }
 630         return 0;
 631 }
 632
 633 static int daio_mgr_dsb_daio(struct daio_mgr *mgr, struct daio *daio)
 634 {
 635         struct hw *hw = mgr->mgr.hw;
 636
 637         if (DAIO_OUT_MAX >= daio->type) {
 638                 hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
 639                                 daio_device_index(daio->type, hw));
 640         } else {
 641                 hw->daio_mgr_dsb_dai(mgr->mgr.ctrl_blk,
 642                                 daio_device_index(daio->type, hw));
 643         }
 644         return 0;
 645 }
 646
 647 static int daio_map_op(void *data, struct imapper *entry)
 648 {
 649         struct rsc_mgr *mgr = &((struct daio_mgr *)data)->mgr;
 650         struct hw *hw = mgr->hw;
 651
 652         hw->daio_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
 653         hw->daio_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
 654         hw->daio_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
 655         hw->daio_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
 656
 657         return 0;
 658 }
 659
 660 static int daio_imap_add(struct daio_mgr *mgr, struct imapper *entry)
 661 {
 662         unsigned long flags;
 663         int err;
 664
 665         spin_lock_irqsave(&mgr->imap_lock, flags);
 666         if (!entry->addr && mgr->init_imap_added) {
 667                 input_mapper_delete(&mgr->imappers, mgr->init_imap,
 668                                                         daio_map_op, mgr);
 669                 mgr->init_imap_added = 0;
 670         }
 671         err = input_mapper_add(&mgr->imappers, entry, daio_map_op, mgr);
 672         spin_unlock_irqrestore(&mgr->imap_lock, flags);
 673
 674         return err;
 675 }
 676
 677 static int daio_imap_delete(struct daio_mgr *mgr, struct imapper *entry)
 678 {
 679         unsigned long flags;
 680         int err;
 681
 682         spin_lock_irqsave(&mgr->imap_lock, flags);
 683         err = input_mapper_delete(&mgr->imappers, entry, daio_map_op, mgr);
 684         if (list_empty(&mgr->imappers)) {
 685                 input_mapper_add(&mgr->imappers, mgr->init_imap,
 686                                                         daio_map_op, mgr);
 687                 mgr->init_imap_added = 1;
 688         }
 689         spin_unlock_irqrestore(&mgr->imap_lock, flags);
 690
 691         return err;
 692 }
 693
 694 static int daio_mgr_commit_write(struct daio_mgr *mgr)
 695 {
 696         struct hw *hw = mgr->mgr.hw;
 697
 698         hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 699         return 0;
 700 }
 701
 702 int daio_mgr_create(void *hw, struct daio_mgr **rdaio_mgr)
 703 {
 704         int err, i;
 705         struct daio_mgr *daio_mgr;
 706         struct imapper *entry;
 707
 708         *rdaio_mgr = NULL;
 709         daio_mgr = kzalloc(sizeof(*daio_mgr), GFP_KERNEL);
 710         if (!daio_mgr)
 711                 return -ENOMEM;
 712
 713         err = rsc_mgr_init(&daio_mgr->mgr, DAIO, DAIO_RESOURCE_NUM, hw);
 714         if (err)
 715                 goto error1;
 716
 717         spin_lock_init(&daio_mgr->mgr_lock);
 718         spin_lock_init(&daio_mgr->imap_lock);
 719         INIT_LIST_HEAD(&daio_mgr->imappers);
 720         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 721         if (!entry) {
 722                 err = -ENOMEM;
 723                 goto error2;
 724         }
 725         entry->slot = entry->addr = entry->next = entry->user = 0;
 726         list_add(&entry->list, &daio_mgr->imappers);
 727         daio_mgr->init_imap = entry;
 728         daio_mgr->init_imap_added = 1;
 729
 730         daio_mgr->get_daio = get_daio_rsc;
 731         daio_mgr->put_daio = put_daio_rsc;
 732         daio_mgr->daio_enable = daio_mgr_enb_daio;
 733         daio_mgr->daio_disable = daio_mgr_dsb_daio;
 734         daio_mgr->imap_add = daio_imap_add;
 735         daio_mgr->imap_delete = daio_imap_delete;
 736         daio_mgr->commit_write = daio_mgr_commit_write;
 737
 738         for (i = 0; i < 8; i++) {
 739                 ((struct hw *)hw)->daio_mgr_dsb_dao(daio_mgr->mgr.ctrl_blk, i);
 740                 ((struct hw *)hw)->daio_mgr_dsb_dai(daio_mgr->mgr.ctrl_blk, i);
 741         }
 742         ((struct hw *)hw)->daio_mgr_commit_write(hw, daio_mgr->mgr.ctrl_blk);
 743
 744         *rdaio_mgr = daio_mgr;
 745
 746         return 0;
 747
 748 error2:
 749         rsc_mgr_uninit(&daio_mgr->mgr);
 750 error1:
 751         kfree(daio_mgr);
 752         return err;
 753 }
 754
 755 int daio_mgr_destroy(struct daio_mgr *daio_mgr)
 756 {
 757         unsigned long flags;
 758
 759         /* free daio input mapper list */
 760         spin_lock_irqsave(&daio_mgr->imap_lock, flags);
 761         free_input_mapper_list(&daio_mgr->imappers);
 762         spin_unlock_irqrestore(&daio_mgr->imap_lock, flags);
 763
 764         rsc_mgr_uninit(&daio_mgr->mgr);
 765         kfree(daio_mgr);
 766
 767         return 0;
 768 }
 769