linux/sound/pci/ctxfi/ctdaio.c
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   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_OUT_MAX            SPDIFOO
  26
  27struct daio_usage {
  28        unsigned short data;
  29};
  30
  31struct daio_rsc_idx {
  32        unsigned short left;
  33        unsigned short right;
  34};
  35
  36static struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
  37        [LINEO1] = {.left = 0x00, .right = 0x01},
  38        [LINEO2] = {.left = 0x18, .right = 0x19},
  39        [LINEO3] = {.left = 0x08, .right = 0x09},
  40        [LINEO4] = {.left = 0x10, .right = 0x11},
  41        [LINEIM] = {.left = 0x1b5, .right = 0x1bd},
  42        [SPDIFOO] = {.left = 0x20, .right = 0x21},
  43        [SPDIFIO] = {.left = 0x15, .right = 0x1d},
  44        [SPDIFI1] = {.left = 0x95, .right = 0x9d},
  45};
  46
  47static struct daio_rsc_idx idx_20k2[NUM_DAIOTYP] = {
  48        [LINEO1] = {.left = 0x40, .right = 0x41},
  49        [LINEO2] = {.left = 0x60, .right = 0x61},
  50        [LINEO3] = {.left = 0x50, .right = 0x51},
  51        [LINEO4] = {.left = 0x70, .right = 0x71},
  52        [LINEIM] = {.left = 0x45, .right = 0xc5},
  53        [MIC]    = {.left = 0x55, .right = 0xd5},
  54        [SPDIFOO] = {.left = 0x00, .right = 0x01},
  55        [SPDIFIO] = {.left = 0x05, .right = 0x85},
  56};
  57
  58static int daio_master(struct rsc *rsc)
  59{
  60        /* Actually, this is not the resource index of DAIO.
  61         * For DAO, it is the input mapper index. And, for DAI,
  62         * it is the output time-slot index. */
  63        return rsc->conj = rsc->idx;
  64}
  65
  66static int daio_index(const struct rsc *rsc)
  67{
  68        return rsc->conj;
  69}
  70
  71static int daio_out_next_conj(struct rsc *rsc)
  72{
  73        return rsc->conj += 2;
  74}
  75
  76static int daio_in_next_conj_20k1(struct rsc *rsc)
  77{
  78        return rsc->conj += 0x200;
  79}
  80
  81static int daio_in_next_conj_20k2(struct rsc *rsc)
  82{
  83        return rsc->conj += 0x100;
  84}
  85
  86static const struct rsc_ops daio_out_rsc_ops = {
  87        .master         = daio_master,
  88        .next_conj      = daio_out_next_conj,
  89        .index          = daio_index,
  90        .output_slot    = NULL,
  91};
  92
  93static const struct rsc_ops daio_in_rsc_ops_20k1 = {
  94        .master         = daio_master,
  95        .next_conj      = daio_in_next_conj_20k1,
  96        .index          = NULL,
  97        .output_slot    = daio_index,
  98};
  99
 100static const struct rsc_ops daio_in_rsc_ops_20k2 = {
 101        .master         = daio_master,
 102        .next_conj      = daio_in_next_conj_20k2,
 103        .index          = NULL,
 104        .output_slot    = daio_index,
 105};
 106
 107static unsigned int daio_device_index(enum DAIOTYP type, struct hw *hw)
 108{
 109        switch (hw->chip_type) {
 110        case ATC20K1:
 111                switch (type) {
 112                case SPDIFOO:   return 0;
 113                case SPDIFIO:   return 0;
 114                case SPDIFI1:   return 1;
 115                case LINEO1:    return 4;
 116                case LINEO2:    return 7;
 117                case LINEO3:    return 5;
 118                case LINEO4:    return 6;
 119                case LINEIM:    return 7;
 120                default:        return -EINVAL;
 121                }
 122        case ATC20K2:
 123                switch (type) {
 124                case SPDIFOO:   return 0;
 125                case SPDIFIO:   return 0;
 126                case LINEO1:    return 4;
 127                case LINEO2:    return 7;
 128                case LINEO3:    return 5;
 129                case LINEO4:    return 6;
 130                case LINEIM:    return 4;
 131                case MIC:       return 5;
 132                default:        return -EINVAL;
 133                }
 134        default:
 135                return -EINVAL;
 136        }
 137}
 138
 139static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc);
 140
 141static int dao_spdif_get_spos(struct dao *dao, unsigned int *spos)
 142{
 143        dao->hw->dao_get_spos(dao->ctrl_blk, spos);
 144        return 0;
 145}
 146
 147static int dao_spdif_set_spos(struct dao *dao, unsigned int spos)
 148{
 149        dao->hw->dao_set_spos(dao->ctrl_blk, spos);
 150        return 0;
 151}
 152
 153static int dao_commit_write(struct dao *dao)
 154{
 155        dao->hw->dao_commit_write(dao->hw,
 156                daio_device_index(dao->daio.type, dao->hw), dao->ctrl_blk);
 157        return 0;
 158}
 159
 160static int dao_set_left_input(struct dao *dao, struct rsc *input)
 161{
 162        struct imapper *entry;
 163        struct daio *daio = &dao->daio;
 164        int i;
 165
 166        entry = kzalloc((sizeof(*entry) * daio->rscl.msr), GFP_KERNEL);
 167        if (!entry)
 168                return -ENOMEM;
 169
 170        dao->ops->clear_left_input(dao);
 171        /* Program master and conjugate resources */
 172        input->ops->master(input);
 173        daio->rscl.ops->master(&daio->rscl);
 174        for (i = 0; i < daio->rscl.msr; i++, entry++) {
 175                entry->slot = input->ops->output_slot(input);
 176                entry->user = entry->addr = daio->rscl.ops->index(&daio->rscl);
 177                dao->mgr->imap_add(dao->mgr, entry);
 178                dao->imappers[i] = entry;
 179
 180                input->ops->next_conj(input);
 181                daio->rscl.ops->next_conj(&daio->rscl);
 182        }
 183        input->ops->master(input);
 184        daio->rscl.ops->master(&daio->rscl);
 185
 186        return 0;
 187}
 188
 189static int dao_set_right_input(struct dao *dao, struct rsc *input)
 190{
 191        struct imapper *entry;
 192        struct daio *daio = &dao->daio;
 193        int i;
 194
 195        entry = kzalloc((sizeof(*entry) * daio->rscr.msr), GFP_KERNEL);
 196        if (!entry)
 197                return -ENOMEM;
 198
 199        dao->ops->clear_right_input(dao);
 200        /* Program master and conjugate resources */
 201        input->ops->master(input);
 202        daio->rscr.ops->master(&daio->rscr);
 203        for (i = 0; i < daio->rscr.msr; i++, entry++) {
 204                entry->slot = input->ops->output_slot(input);
 205                entry->user = entry->addr = daio->rscr.ops->index(&daio->rscr);
 206                dao->mgr->imap_add(dao->mgr, entry);
 207                dao->imappers[daio->rscl.msr + i] = entry;
 208
 209                input->ops->next_conj(input);
 210                daio->rscr.ops->next_conj(&daio->rscr);
 211        }
 212        input->ops->master(input);
 213        daio->rscr.ops->master(&daio->rscr);
 214
 215        return 0;
 216}
 217
 218static int dao_clear_left_input(struct dao *dao)
 219{
 220        struct imapper *entry;
 221        struct daio *daio = &dao->daio;
 222        int i;
 223
 224        if (!dao->imappers[0])
 225                return 0;
 226
 227        entry = dao->imappers[0];
 228        dao->mgr->imap_delete(dao->mgr, entry);
 229        /* Program conjugate resources */
 230        for (i = 1; i < daio->rscl.msr; i++) {
 231                entry = dao->imappers[i];
 232                dao->mgr->imap_delete(dao->mgr, entry);
 233                dao->imappers[i] = NULL;
 234        }
 235
 236        kfree(dao->imappers[0]);
 237        dao->imappers[0] = NULL;
 238
 239        return 0;
 240}
 241
 242static int dao_clear_right_input(struct dao *dao)
 243{
 244        struct imapper *entry;
 245        struct daio *daio = &dao->daio;
 246        int i;
 247
 248        if (!dao->imappers[daio->rscl.msr])
 249                return 0;
 250
 251        entry = dao->imappers[daio->rscl.msr];
 252        dao->mgr->imap_delete(dao->mgr, entry);
 253        /* Program conjugate resources */
 254        for (i = 1; i < daio->rscr.msr; i++) {
 255                entry = dao->imappers[daio->rscl.msr + i];
 256                dao->mgr->imap_delete(dao->mgr, entry);
 257                dao->imappers[daio->rscl.msr + i] = NULL;
 258        }
 259
 260        kfree(dao->imappers[daio->rscl.msr]);
 261        dao->imappers[daio->rscl.msr] = NULL;
 262
 263        return 0;
 264}
 265
 266static const struct dao_rsc_ops dao_ops = {
 267        .set_spos               = dao_spdif_set_spos,
 268        .commit_write           = dao_commit_write,
 269        .get_spos               = dao_spdif_get_spos,
 270        .reinit                 = dao_rsc_reinit,
 271        .set_left_input         = dao_set_left_input,
 272        .set_right_input        = dao_set_right_input,
 273        .clear_left_input       = dao_clear_left_input,
 274        .clear_right_input      = dao_clear_right_input,
 275};
 276
 277static int dai_set_srt_srcl(struct dai *dai, struct rsc *src)
 278{
 279        src->ops->master(src);
 280        dai->hw->dai_srt_set_srcm(dai->ctrl_blk, src->ops->index(src));
 281        return 0;
 282}
 283
 284static int dai_set_srt_srcr(struct dai *dai, struct rsc *src)
 285{
 286        src->ops->master(src);
 287        dai->hw->dai_srt_set_srco(dai->ctrl_blk, src->ops->index(src));
 288        return 0;
 289}
 290
 291static int dai_set_srt_msr(struct dai *dai, unsigned int msr)
 292{
 293        unsigned int rsr;
 294
 295        for (rsr = 0; msr > 1; msr >>= 1)
 296                rsr++;
 297
 298        dai->hw->dai_srt_set_rsr(dai->ctrl_blk, rsr);
 299        return 0;
 300}
 301
 302static int dai_set_enb_src(struct dai *dai, unsigned int enb)
 303{
 304        dai->hw->dai_srt_set_ec(dai->ctrl_blk, enb);
 305        return 0;
 306}
 307
 308static int dai_set_enb_srt(struct dai *dai, unsigned int enb)
 309{
 310        dai->hw->dai_srt_set_et(dai->ctrl_blk, enb);
 311        return 0;
 312}
 313
 314static int dai_commit_write(struct dai *dai)
 315{
 316        dai->hw->dai_commit_write(dai->hw,
 317                daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
 318        return 0;
 319}
 320
 321static const struct dai_rsc_ops dai_ops = {
 322        .set_srt_srcl           = dai_set_srt_srcl,
 323        .set_srt_srcr           = dai_set_srt_srcr,
 324        .set_srt_msr            = dai_set_srt_msr,
 325        .set_enb_src            = dai_set_enb_src,
 326        .set_enb_srt            = dai_set_enb_srt,
 327        .commit_write           = dai_commit_write,
 328};
 329
 330static int daio_rsc_init(struct daio *daio,
 331                         const struct daio_desc *desc,
 332                         struct hw *hw)
 333{
 334        int err;
 335        unsigned int idx_l, idx_r;
 336
 337        switch (hw->chip_type) {
 338        case ATC20K1:
 339                idx_l = idx_20k1[desc->type].left;
 340                idx_r = idx_20k1[desc->type].right;
 341                break;
 342        case ATC20K2:
 343                idx_l = idx_20k2[desc->type].left;
 344                idx_r = idx_20k2[desc->type].right;
 345                break;
 346        default:
 347                return -EINVAL;
 348        }
 349        err = rsc_init(&daio->rscl, idx_l, DAIO, desc->msr, hw);
 350        if (err)
 351                return err;
 352
 353        err = rsc_init(&daio->rscr, idx_r, DAIO, desc->msr, hw);
 354        if (err)
 355                goto error1;
 356
 357        /* Set daio->rscl/r->ops to daio specific ones */
 358        if (desc->type <= DAIO_OUT_MAX) {
 359                daio->rscl.ops = daio->rscr.ops = &daio_out_rsc_ops;
 360        } else {
 361                switch (hw->chip_type) {
 362                case ATC20K1:
 363                        daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k1;
 364                        break;
 365                case ATC20K2:
 366                        daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k2;
 367                        break;
 368                default:
 369                        break;
 370                }
 371        }
 372        daio->type = desc->type;
 373
 374        return 0;
 375
 376error1:
 377        rsc_uninit(&daio->rscl);
 378        return err;
 379}
 380
 381static int daio_rsc_uninit(struct daio *daio)
 382{
 383        rsc_uninit(&daio->rscl);
 384        rsc_uninit(&daio->rscr);
 385
 386        return 0;
 387}
 388
 389static int dao_rsc_init(struct dao *dao,
 390                        const struct daio_desc *desc,
 391                        struct daio_mgr *mgr)
 392{
 393        struct hw *hw = mgr->mgr.hw;
 394        unsigned int conf;
 395        int err;
 396
 397        err = daio_rsc_init(&dao->daio, desc, mgr->mgr.hw);
 398        if (err)
 399                return err;
 400
 401        dao->imappers = kzalloc(sizeof(void *)*desc->msr*2, GFP_KERNEL);
 402        if (!dao->imappers) {
 403                err = -ENOMEM;
 404                goto error1;
 405        }
 406        dao->ops = &dao_ops;
 407        dao->mgr = mgr;
 408        dao->hw = hw;
 409        err = hw->dao_get_ctrl_blk(&dao->ctrl_blk);
 410        if (err)
 411                goto error2;
 412
 413        hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
 414                        daio_device_index(dao->daio.type, hw));
 415        hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 416
 417        conf = (desc->msr & 0x7) | (desc->passthru << 3);
 418        hw->daio_mgr_dao_init(mgr->mgr.ctrl_blk,
 419                        daio_device_index(dao->daio.type, hw), conf);
 420        hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
 421                        daio_device_index(dao->daio.type, hw));
 422        hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 423
 424        return 0;
 425
 426error2:
 427        kfree(dao->imappers);
 428        dao->imappers = NULL;
 429error1:
 430        daio_rsc_uninit(&dao->daio);
 431        return err;
 432}
 433
 434static int dao_rsc_uninit(struct dao *dao)
 435{
 436        if (dao->imappers) {
 437                if (dao->imappers[0])
 438                        dao_clear_left_input(dao);
 439
 440                if (dao->imappers[dao->daio.rscl.msr])
 441                        dao_clear_right_input(dao);
 442
 443                kfree(dao->imappers);
 444                dao->imappers = NULL;
 445        }
 446        dao->hw->dao_put_ctrl_blk(dao->ctrl_blk);
 447        dao->hw = dao->ctrl_blk = NULL;
 448        daio_rsc_uninit(&dao->daio);
 449
 450        return 0;
 451}
 452
 453static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc)
 454{
 455        struct daio_mgr *mgr = dao->mgr;
 456        struct daio_desc dsc = {0};
 457
 458        dsc.type = dao->daio.type;
 459        dsc.msr = desc->msr;
 460        dsc.passthru = desc->passthru;
 461        dao_rsc_uninit(dao);
 462        return dao_rsc_init(dao, &dsc, mgr);
 463}
 464
 465static int dai_rsc_init(struct dai *dai,
 466                        const struct daio_desc *desc,
 467                        struct daio_mgr *mgr)
 468{
 469        int err;
 470        struct hw *hw = mgr->mgr.hw;
 471        unsigned int rsr, msr;
 472
 473        err = daio_rsc_init(&dai->daio, desc, mgr->mgr.hw);
 474        if (err)
 475                return err;
 476
 477        dai->ops = &dai_ops;
 478        dai->hw = mgr->mgr.hw;
 479        err = hw->dai_get_ctrl_blk(&dai->ctrl_blk);
 480        if (err)
 481                goto error1;
 482
 483        for (rsr = 0, msr = desc->msr; msr > 1; msr >>= 1)
 484                rsr++;
 485
 486        hw->dai_srt_set_rsr(dai->ctrl_blk, rsr);
 487        hw->dai_srt_set_drat(dai->ctrl_blk, 0);
 488        /* default to disabling control of a SRC */
 489        hw->dai_srt_set_ec(dai->ctrl_blk, 0);
 490        hw->dai_srt_set_et(dai->ctrl_blk, 0); /* default to disabling SRT */
 491        hw->dai_commit_write(hw,
 492                daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
 493
 494        return 0;
 495
 496error1:
 497        daio_rsc_uninit(&dai->daio);
 498        return err;
 499}
 500
 501static int dai_rsc_uninit(struct dai *dai)
 502{
 503        dai->hw->dai_put_ctrl_blk(dai->ctrl_blk);
 504        dai->hw = dai->ctrl_blk = NULL;
 505        daio_rsc_uninit(&dai->daio);
 506        return 0;
 507}
 508
 509static int daio_mgr_get_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
 510{
 511        if (((struct daio_usage *)mgr->rscs)->data & (0x1 << type))
 512                return -ENOENT;
 513
 514        ((struct daio_usage *)mgr->rscs)->data |= (0x1 << type);
 515
 516        return 0;
 517}
 518
 519static int daio_mgr_put_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
 520{
 521        ((struct daio_usage *)mgr->rscs)->data &= ~(0x1 << type);
 522
 523        return 0;
 524}
 525
 526static int get_daio_rsc(struct daio_mgr *mgr,
 527                        const struct daio_desc *desc,
 528                        struct daio **rdaio)
 529{
 530        int err;
 531        unsigned long flags;
 532
 533        *rdaio = NULL;
 534
 535        /* Check whether there are sufficient daio resources to meet request. */
 536        spin_lock_irqsave(&mgr->mgr_lock, flags);
 537        err = daio_mgr_get_rsc(&mgr->mgr, desc->type);
 538        spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 539        if (err) {
 540                dev_err(mgr->card->dev,
 541                        "Can't meet DAIO resource request!\n");
 542                return err;
 543        }
 544
 545        err = -ENOMEM;
 546        /* Allocate mem for daio resource */
 547        if (desc->type <= DAIO_OUT_MAX) {
 548                struct dao *dao = kzalloc(sizeof(*dao), GFP_KERNEL);
 549                if (!dao)
 550                        goto error;
 551
 552                err = dao_rsc_init(dao, desc, mgr);
 553                if (err) {
 554                        kfree(dao);
 555                        goto error;
 556                }
 557
 558                *rdaio = &dao->daio;
 559        } else {
 560                struct dai *dai = kzalloc(sizeof(*dai), GFP_KERNEL);
 561                if (!dai)
 562                        goto error;
 563
 564                err = dai_rsc_init(dai, desc, mgr);
 565                if (err) {
 566                        kfree(dai);
 567                        goto error;
 568                }
 569
 570                *rdaio = &dai->daio;
 571        }
 572
 573        mgr->daio_enable(mgr, *rdaio);
 574        mgr->commit_write(mgr);
 575
 576        return 0;
 577
 578error:
 579        spin_lock_irqsave(&mgr->mgr_lock, flags);
 580        daio_mgr_put_rsc(&mgr->mgr, desc->type);
 581        spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 582        return err;
 583}
 584
 585static int put_daio_rsc(struct daio_mgr *mgr, struct daio *daio)
 586{
 587        unsigned long flags;
 588
 589        mgr->daio_disable(mgr, daio);
 590        mgr->commit_write(mgr);
 591
 592        spin_lock_irqsave(&mgr->mgr_lock, flags);
 593        daio_mgr_put_rsc(&mgr->mgr, daio->type);
 594        spin_unlock_irqrestore(&mgr->mgr_lock, flags);
 595
 596        if (daio->type <= DAIO_OUT_MAX) {
 597                dao_rsc_uninit(container_of(daio, struct dao, daio));
 598                kfree(container_of(daio, struct dao, daio));
 599        } else {
 600                dai_rsc_uninit(container_of(daio, struct dai, daio));
 601                kfree(container_of(daio, struct dai, daio));
 602        }
 603
 604        return 0;
 605}
 606
 607static int daio_mgr_enb_daio(struct daio_mgr *mgr, struct daio *daio)
 608{
 609        struct hw *hw = mgr->mgr.hw;
 610
 611        if (DAIO_OUT_MAX >= daio->type) {
 612                hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
 613                                daio_device_index(daio->type, hw));
 614        } else {
 615                hw->daio_mgr_enb_dai(mgr->mgr.ctrl_blk,
 616                                daio_device_index(daio->type, hw));
 617        }
 618        return 0;
 619}
 620
 621static int daio_mgr_dsb_daio(struct daio_mgr *mgr, struct daio *daio)
 622{
 623        struct hw *hw = mgr->mgr.hw;
 624
 625        if (DAIO_OUT_MAX >= daio->type) {
 626                hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
 627                                daio_device_index(daio->type, hw));
 628        } else {
 629                hw->daio_mgr_dsb_dai(mgr->mgr.ctrl_blk,
 630                                daio_device_index(daio->type, hw));
 631        }
 632        return 0;
 633}
 634
 635static int daio_map_op(void *data, struct imapper *entry)
 636{
 637        struct rsc_mgr *mgr = &((struct daio_mgr *)data)->mgr;
 638        struct hw *hw = mgr->hw;
 639
 640        hw->daio_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
 641        hw->daio_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
 642        hw->daio_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
 643        hw->daio_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
 644
 645        return 0;
 646}
 647
 648static int daio_imap_add(struct daio_mgr *mgr, struct imapper *entry)
 649{
 650        unsigned long flags;
 651        int err;
 652
 653        spin_lock_irqsave(&mgr->imap_lock, flags);
 654        if (!entry->addr && mgr->init_imap_added) {
 655                input_mapper_delete(&mgr->imappers, mgr->init_imap,
 656                                                        daio_map_op, mgr);
 657                mgr->init_imap_added = 0;
 658        }
 659        err = input_mapper_add(&mgr->imappers, entry, daio_map_op, mgr);
 660        spin_unlock_irqrestore(&mgr->imap_lock, flags);
 661
 662        return err;
 663}
 664
 665static int daio_imap_delete(struct daio_mgr *mgr, struct imapper *entry)
 666{
 667        unsigned long flags;
 668        int err;
 669
 670        spin_lock_irqsave(&mgr->imap_lock, flags);
 671        err = input_mapper_delete(&mgr->imappers, entry, daio_map_op, mgr);
 672        if (list_empty(&mgr->imappers)) {
 673                input_mapper_add(&mgr->imappers, mgr->init_imap,
 674                                                        daio_map_op, mgr);
 675                mgr->init_imap_added = 1;
 676        }
 677        spin_unlock_irqrestore(&mgr->imap_lock, flags);
 678
 679        return err;
 680}
 681
 682static int daio_mgr_commit_write(struct daio_mgr *mgr)
 683{
 684        struct hw *hw = mgr->mgr.hw;
 685
 686        hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
 687        return 0;
 688}
 689
 690int daio_mgr_create(struct hw *hw, struct daio_mgr **rdaio_mgr)
 691{
 692        int err, i;
 693        struct daio_mgr *daio_mgr;
 694        struct imapper *entry;
 695
 696        *rdaio_mgr = NULL;
 697        daio_mgr = kzalloc(sizeof(*daio_mgr), GFP_KERNEL);
 698        if (!daio_mgr)
 699                return -ENOMEM;
 700
 701        err = rsc_mgr_init(&daio_mgr->mgr, DAIO, NUM_DAIOTYP, hw);
 702        if (err)
 703                goto error1;
 704
 705        spin_lock_init(&daio_mgr->mgr_lock);
 706        spin_lock_init(&daio_mgr->imap_lock);
 707        INIT_LIST_HEAD(&daio_mgr->imappers);
 708        entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 709        if (!entry) {
 710                err = -ENOMEM;
 711                goto error2;
 712        }
 713        entry->slot = entry->addr = entry->next = entry->user = 0;
 714        list_add(&entry->list, &daio_mgr->imappers);
 715        daio_mgr->init_imap = entry;
 716        daio_mgr->init_imap_added = 1;
 717
 718        daio_mgr->get_daio = get_daio_rsc;
 719        daio_mgr->put_daio = put_daio_rsc;
 720        daio_mgr->daio_enable = daio_mgr_enb_daio;
 721        daio_mgr->daio_disable = daio_mgr_dsb_daio;
 722        daio_mgr->imap_add = daio_imap_add;
 723        daio_mgr->imap_delete = daio_imap_delete;
 724        daio_mgr->commit_write = daio_mgr_commit_write;
 725        daio_mgr->card = hw->card;
 726
 727        for (i = 0; i < 8; i++) {
 728                hw->daio_mgr_dsb_dao(daio_mgr->mgr.ctrl_blk, i);
 729                hw->daio_mgr_dsb_dai(daio_mgr->mgr.ctrl_blk, i);
 730        }
 731        hw->daio_mgr_commit_write(hw, daio_mgr->mgr.ctrl_blk);
 732
 733        *rdaio_mgr = daio_mgr;
 734
 735        return 0;
 736
 737error2:
 738        rsc_mgr_uninit(&daio_mgr->mgr);
 739error1:
 740        kfree(daio_mgr);
 741        return err;
 742}
 743
 744int daio_mgr_destroy(struct daio_mgr *daio_mgr)
 745{
 746        unsigned long flags;
 747
 748        /* free daio input mapper list */
 749        spin_lock_irqsave(&daio_mgr->imap_lock, flags);
 750        free_input_mapper_list(&daio_mgr->imappers);
 751        spin_unlock_irqrestore(&daio_mgr->imap_lock, flags);
 752
 753        rsc_mgr_uninit(&daio_mgr->mgr);
 754        kfree(daio_mgr);
 755
 756        return 0;
 757}
 758
 759