ALSA: SB X-Fi driver merge

The Sound Blaster X-Fi driver supports Creative solutions based on
20K1 and 20K2 chipsets.

Supported hardware :

Creative Sound Blaster X-Fi Titanium Fatal1ty® Champion Series
Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
Creative Sound Blaster X-Fi Titanium Professional Audio
Creative Sound Blaster X-Fi Titanium
Creative Sound Blaster X-Fi Elite Pro
Creative Sound Blaster X-Fi Platinum
Creative Sound Blaster X-Fi Fatal1ty
Creative Sound Blaster X-Fi XtremeGamer
Creative Sound Blaster X-Fi XtremeMusic

Current release features:

* ALSA PCM Playback
* ALSA Record
* ALSA Mixer

Note:

* External I/O modules detection not included.

Signed-off-by: Wai Yew CHAY <wychay@ctl.creative.com>
Singed-off-by: Ryan RICHARDS <ryan_richards@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 769 insertions, 0 deletions

diff --git a/sound/pci/ctxfi/ctdaio.c b/sound/pci/ctxfi/ctdaio.c
new file mode 100644
index 000000000000..a2aea399eba1
--- /dev/null
+++ b/sound/pci/ctxfi/ctdaio.c
@@ -0,0 +1,769 @@
+/**
+ * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
+ *
+ * This source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ * @File        ctdaio.c
+ *
+ * @Brief
+ * This file contains the implementation of Digital Audio Input Output
+ * resource management object.
+ *
+ * @Author      Liu Chun
+ * @Date        May 23 2008
+ *
+ */
+
+#include "ctdaio.h"
+#include "cthardware.h"
+#include "ctimap.h"
+#include <linux/slab.h>
+#include <linux/kernel.h>
+
+#define DAIO_RESOURCE_NUM       NUM_DAIOTYP
+#define DAIO_OUT_MAX            SPDIFOO
+
+union daio_usage {
+        struct {
+                unsigned short lineo1:1;
+                unsigned short lineo2:1;
+                unsigned short lineo3:1;
+                unsigned short lineo4:1;
+                unsigned short spdifoo:1;
+                unsigned short lineim:1;
+                unsigned short spdifio:1;
+                unsigned short spdifi1:1;
+        } bf;
+        unsigned short data;
+};
+
+struct daio_rsc_idx {
+        unsigned short left;
+        unsigned short right;
+};
+
+struct daio_rsc_idx idx_20k1[NUM_DAIOTYP] = {
+        [LINEO1] = {.left = 0x00, .right = 0x01},
+        [LINEO2] = {.left = 0x18, .right = 0x19},
+        [LINEO3] = {.left = 0x08, .right = 0x09},
+        [LINEO4] = {.left = 0x10, .right = 0x11},
+        [LINEIM] = {.left = 0x1b5, .right = 0x1bd},
+        [SPDIFOO] = {.left = 0x20, .right = 0x21},
+        [SPDIFIO] = {.left = 0x15, .right = 0x1d},
+        [SPDIFI1] = {.left = 0x95, .right = 0x9d},
+};
+
+struct daio_rsc_idx idx_20k2[NUM_DAIOTYP] = {
+        [LINEO1] = {.left = 0x40, .right = 0x41},
+        [LINEO2] = {.left = 0x70, .right = 0x71},
+        [LINEO3] = {.left = 0x50, .right = 0x51},
+        [LINEO4] = {.left = 0x60, .right = 0x61},
+        [LINEIM] = {.left = 0x45, .right = 0xc5},
+        [SPDIFOO] = {.left = 0x00, .right = 0x01},
+        [SPDIFIO] = {.left = 0x05, .right = 0x85},
+};
+
+static int daio_master(struct rsc *rsc)
+{
+        /* Actually, this is not the resource index of DAIO.
+         * For DAO, it is the input mapper index. And, for DAI,
+         * it is the output time-slot index. */
+        return rsc->conj = rsc->idx;
+}
+
+static int daio_index(const struct rsc *rsc)
+{
+        return rsc->conj;
+}
+
+static int daio_out_next_conj(struct rsc *rsc)
+{
+        return rsc->conj += 2;
+}
+
+static int daio_in_next_conj_20k1(struct rsc *rsc)
+{
+        return rsc->conj += 0x200;
+}
+
+static int daio_in_next_conj_20k2(struct rsc *rsc)
+{
+        return rsc->conj += 0x100;
+}
+
+static struct rsc_ops daio_out_rsc_ops = {
+        .master         = daio_master,
+        .next_conj      = daio_out_next_conj,
+        .index          = daio_index,
+        .output_slot    = NULL,
+};
+
+static struct rsc_ops daio_in_rsc_ops_20k1 = {
+        .master         = daio_master,
+        .next_conj      = daio_in_next_conj_20k1,
+        .index          = NULL,
+        .output_slot    = daio_index,
+};
+
+static struct rsc_ops daio_in_rsc_ops_20k2 = {
+        .master         = daio_master,
+        .next_conj      = daio_in_next_conj_20k2,
+        .index          = NULL,
+        .output_slot    = daio_index,
+};
+
+static unsigned int daio_device_index(enum DAIOTYP type, struct hw *hw)
+{
+        switch (hw->get_chip_type(hw)) {
+        case ATC20K1:
+                switch (type) {
+                case SPDIFOO:   return 0;
+                case SPDIFIO:   return 0;
+                case SPDIFI1:   return 1;
+                case LINEO1:    return 4;
+                case LINEO2:    return 7;
+                case LINEO3:    return 5;
+                case LINEO4:    return 6;
+                case LINEIM:    return 7;
+                default:        return -EINVAL;
+                }
+        case ATC20K2:
+                switch (type) {
+                case SPDIFOO:   return 0;
+                case SPDIFIO:   return 0;
+                case LINEO1:    return 4;
+                case LINEO2:    return 7;
+                case LINEO3:    return 5;
+                case LINEO4:    return 6;
+                case LINEIM:    return 4;
+                default:        return -EINVAL;
+                }
+        default:
+                return -EINVAL;
+        }
+}
+
+static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc);
+
+static int dao_spdif_get_spos(struct dao *dao, unsigned int *spos)
+{
+        ((struct hw *)dao->hw)->dao_get_spos(dao->ctrl_blk, spos);
+        return 0;
+}
+
+static int dao_spdif_set_spos(struct dao *dao, unsigned int spos)
+{
+        ((struct hw *)dao->hw)->dao_set_spos(dao->ctrl_blk, spos);
+        return 0;
+}
+
+static int dao_commit_write(struct dao *dao)
+{
+        ((struct hw *)dao->hw)->dao_commit_write(dao->hw,
+                daio_device_index(dao->daio.type, dao->hw), dao->ctrl_blk);
+        return 0;
+}
+
+static int dao_set_left_input(struct dao *dao, struct rsc *input)
+{
+        struct imapper *entry = NULL;
+        struct daio *daio = &dao->daio;
+        int i = 0;
+
+        entry = kzalloc((sizeof(*entry) * daio->rscl.msr), GFP_KERNEL);
+        if (NULL == entry)
+                return -ENOMEM;
+
+        /* Program master and conjugate resources */
+        input->ops->master(input);
+        daio->rscl.ops->master(&daio->rscl);
+        for (i = 0; i < daio->rscl.msr; i++, entry++) {
+                entry->slot = input->ops->output_slot(input);
+                entry->user = entry->addr = daio->rscl.ops->index(&daio->rscl);
+                dao->mgr->imap_add(dao->mgr, entry);
+                dao->imappers[i] = entry;
+
+                input->ops->next_conj(input);
+                daio->rscl.ops->next_conj(&daio->rscl);
+        }
+        input->ops->master(input);
+        daio->rscl.ops->master(&daio->rscl);
+
+        return 0;
+}
+
+static int dao_set_right_input(struct dao *dao, struct rsc *input)
+{
+        struct imapper *entry = NULL;
+        struct daio *daio = &dao->daio;
+        int i = 0;
+
+        entry = kzalloc((sizeof(*entry) * daio->rscr.msr), GFP_KERNEL);
+        if (NULL == entry)
+                return -ENOMEM;
+
+        /* Program master and conjugate resources */
+        input->ops->master(input);
+        daio->rscr.ops->master(&daio->rscr);
+        for (i = 0; i < daio->rscr.msr; i++, entry++) {
+                entry->slot = input->ops->output_slot(input);
+                entry->user = entry->addr = daio->rscr.ops->index(&daio->rscr);
+                dao->mgr->imap_add(dao->mgr, entry);
+                dao->imappers[daio->rscl.msr + i] = entry;
+
+                input->ops->next_conj(input);
+                daio->rscr.ops->next_conj(&daio->rscr);
+        }
+        input->ops->master(input);
+        daio->rscr.ops->master(&daio->rscr);
+
+        return 0;
+}
+
+static int dao_clear_left_input(struct dao *dao)
+{
+        struct imapper *entry = NULL;
+        struct daio *daio = &dao->daio;
+        int i = 0;
+
+        if (NULL == dao->imappers[0])
+                return 0;
+
+        entry = dao->imappers[0];
+        dao->mgr->imap_delete(dao->mgr, entry);
+        /* Program conjugate resources */
+        for (i = 1; i < daio->rscl.msr; i++) {
+                entry = dao->imappers[i];
+                dao->mgr->imap_delete(dao->mgr, entry);
+                dao->imappers[i] = NULL;
+        }
+
+        kfree(dao->imappers[0]);
+        dao->imappers[0] = NULL;
+
+        return 0;
+}
+
+static int dao_clear_right_input(struct dao *dao)
+{
+        struct imapper *entry = NULL;
+        struct daio *daio = &dao->daio;
+        int i = 0;
+
+        if (NULL == dao->imappers[daio->rscl.msr])
+                return 0;
+
+        entry = dao->imappers[daio->rscl.msr];
+        dao->mgr->imap_delete(dao->mgr, entry);
+        /* Program conjugate resources */
+        for (i = 1; i < daio->rscr.msr; i++) {
+                entry = dao->imappers[daio->rscl.msr + i];
+                dao->mgr->imap_delete(dao->mgr, entry);
+                dao->imappers[daio->rscl.msr + i] = NULL;
+        }
+
+        kfree(dao->imappers[daio->rscl.msr]);
+        dao->imappers[daio->rscl.msr] = NULL;
+
+        return 0;
+}
+
+static struct dao_rsc_ops dao_ops = {
+        .set_spos               = dao_spdif_set_spos,
+        .commit_write           = dao_commit_write,
+        .get_spos               = dao_spdif_get_spos,
+        .reinit                 = dao_rsc_reinit,
+        .set_left_input         = dao_set_left_input,
+        .set_right_input        = dao_set_right_input,
+        .clear_left_input       = dao_clear_left_input,
+        .clear_right_input      = dao_clear_right_input,
+};
+
+static int dai_set_srt_srcl(struct dai *dai, struct rsc *src)
+{
+        src->ops->master(src);
+        ((struct hw *)dai->hw)->dai_srt_set_srcm(dai->ctrl_blk,
+                                                src->ops->index(src));
+        return 0;
+}
+
+static int dai_set_srt_srcr(struct dai *dai, struct rsc *src)
+{
+        src->ops->master(src);
+        ((struct hw *)dai->hw)->dai_srt_set_srco(dai->ctrl_blk,
+                                                src->ops->index(src));
+        return 0;
+}
+
+static int dai_set_srt_msr(struct dai *dai, unsigned int msr)
+{
+        unsigned int rsr = 0;
+
+        for (rsr = 0; msr > 1; msr >>= 1)
+                rsr++;
+
+        ((struct hw *)dai->hw)->dai_srt_set_rsr(dai->ctrl_blk, rsr);
+        return 0;
+}
+
+static int dai_set_enb_src(struct dai *dai, unsigned int enb)
+{
+        ((struct hw *)dai->hw)->dai_srt_set_ec(dai->ctrl_blk, enb);
+        return 0;
+}
+
+static int dai_set_enb_srt(struct dai *dai, unsigned int enb)
+{
+        ((struct hw *)dai->hw)->dai_srt_set_et(dai->ctrl_blk, enb);
+        return 0;
+}
+
+static int dai_commit_write(struct dai *dai)
+{
+        ((struct hw *)dai->hw)->dai_commit_write(dai->hw,
+                daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
+        return 0;
+}
+
+static struct dai_rsc_ops dai_ops = {
+        .set_srt_srcl           = dai_set_srt_srcl,
+        .set_srt_srcr           = dai_set_srt_srcr,
+        .set_srt_msr            = dai_set_srt_msr,
+        .set_enb_src            = dai_set_enb_src,
+        .set_enb_srt            = dai_set_enb_srt,
+        .commit_write           = dai_commit_write,
+};
+
+static int daio_rsc_init(struct daio *daio,
+                         const struct daio_desc *desc,
+                         void *hw)
+{
+        int err = 0;
+        unsigned int idx_l = 0, idx_r = 0;
+
+        switch (((struct hw *)hw)->get_chip_type(hw)) {
+        case ATC20K1:
+                idx_l = idx_20k1[desc->type].left;
+                idx_r = idx_20k1[desc->type].right;
+                break;
+        case ATC20K2:
+                idx_l = idx_20k2[desc->type].left;
+                idx_r = idx_20k2[desc->type].right;
+                break;
+        default:
+                return -EINVAL;
+        }
+        err = rsc_init(&daio->rscl, idx_l, DAIO, desc->msr, hw);
+        if (err)
+                return err;
+
+        err = rsc_init(&daio->rscr, idx_r, DAIO, desc->msr, hw);
+        if (err)
+                goto error1;
+
+        /* Set daio->rscl/r->ops to daio specific ones */
+        if (desc->type <= DAIO_OUT_MAX) {
+                daio->rscl.ops = daio->rscr.ops = &daio_out_rsc_ops;
+        } else {
+                switch (((struct hw *)hw)->get_chip_type(hw)) {
+                case ATC20K1:
+                        daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k1;
+                        break;
+                case ATC20K2:
+                        daio->rscl.ops = daio->rscr.ops = &daio_in_rsc_ops_20k2;
+                        break;
+                default:
+                        break;
+                }
+        }
+        daio->type = desc->type;
+
+        return 0;
+
+error1:
+        rsc_uninit(&daio->rscl);
+        return err;
+}
+
+static int daio_rsc_uninit(struct daio *daio)
+{
+        rsc_uninit(&daio->rscl);
+        rsc_uninit(&daio->rscr);
+
+        return 0;
+}
+
+static int dao_rsc_init(struct dao *dao,
+                        const struct daio_desc *desc,
+                        struct daio_mgr *mgr)
+{
+        struct hw *hw = mgr->mgr.hw;
+        unsigned int conf = 0;
+        int err = 0;
+
+        err = daio_rsc_init(&dao->daio, desc, mgr->mgr.hw);
+        if (err)
+                return err;
+
+        dao->imappers = kzalloc(sizeof(void *)*desc->msr*2, GFP_KERNEL);
+        if (NULL == dao->imappers) {
+                err = -ENOMEM;
+                goto error1;
+        }
+        dao->ops = &dao_ops;
+        dao->mgr = mgr;
+        dao->hw = hw;
+        err = hw->dao_get_ctrl_blk(&dao->ctrl_blk);
+        if (err)
+                goto error2;
+
+        hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
+                        daio_device_index(dao->daio.type, hw));
+        hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
+
+        conf |= (desc->msr & 0x7) | (desc->passthru << 3);
+        hw->daio_mgr_dao_init(mgr->mgr.ctrl_blk,
+                        daio_device_index(dao->daio.type, hw), conf);
+        hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
+                        daio_device_index(dao->daio.type, hw));
+        hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
+
+        return 0;
+
+error2:
+        kfree(dao->imappers);
+        dao->imappers = NULL;
+error1:
+        daio_rsc_uninit(&dao->daio);
+        return err;
+}
+
+static int dao_rsc_uninit(struct dao *dao)
+{
+        if (NULL != dao->imappers) {
+                if (NULL != dao->imappers[0])
+                        dao_clear_left_input(dao);
+
+                if (NULL != dao->imappers[dao->daio.rscl.msr])
+                        dao_clear_right_input(dao);
+
+                kfree(dao->imappers);
+                dao->imappers = NULL;
+        }
+        ((struct hw *)dao->hw)->dao_put_ctrl_blk(dao->ctrl_blk);
+        dao->hw = dao->ctrl_blk = NULL;
+        daio_rsc_uninit(&dao->daio);
+
+        return 0;
+}
+
+static int dao_rsc_reinit(struct dao *dao, const struct dao_desc *desc)
+{
+        struct daio_mgr *mgr = dao->mgr;
+        struct daio_desc dsc = {0};
+
+        dsc.type = dao->daio.type;
+        dsc.msr = desc->msr;
+        dsc.passthru = desc->passthru;
+        dao_rsc_uninit(dao);
+        return dao_rsc_init(dao, &dsc, mgr);
+}
+
+static int dai_rsc_init(struct dai *dai,
+                        const struct daio_desc *desc,
+                        struct daio_mgr *mgr)
+{
+        int err = 0;
+        struct hw *hw = mgr->mgr.hw;
+        unsigned int rsr = 0, msr = 0;
+
+        err = daio_rsc_init(&dai->daio, desc, mgr->mgr.hw);
+        if (err)
+                return err;
+
+        dai->ops = &dai_ops;
+        dai->hw = mgr->mgr.hw;
+        err = hw->dai_get_ctrl_blk(&dai->ctrl_blk);
+        if (err)
+                goto error1;
+
+        for (rsr = 0, msr = desc->msr; msr > 1; msr >>= 1)
+                rsr++;
+
+        hw->dai_srt_set_rsr(dai->ctrl_blk, rsr);
+        hw->dai_srt_set_drat(dai->ctrl_blk, 0);
+        /* default to disabling control of a SRC */
+        hw->dai_srt_set_ec(dai->ctrl_blk, 0);
+        hw->dai_srt_set_et(dai->ctrl_blk, 0); /* default to disabling SRT */
+        hw->dai_commit_write(hw,
+                daio_device_index(dai->daio.type, dai->hw), dai->ctrl_blk);
+
+        return 0;
+
+error1:
+        daio_rsc_uninit(&dai->daio);
+        return err;
+}
+
+static int dai_rsc_uninit(struct dai *dai)
+{
+        ((struct hw *)dai->hw)->dai_put_ctrl_blk(dai->ctrl_blk);
+        dai->hw = dai->ctrl_blk = NULL;
+        daio_rsc_uninit(&dai->daio);
+        return 0;
+}
+
+static int daio_mgr_get_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
+{
+        if (((union daio_usage *)mgr->rscs)->data & (0x1 << type))
+                return -ENOENT;
+
+        ((union daio_usage *)mgr->rscs)->data |= (0x1 << type);
+
+        return 0;
+}
+
+static int daio_mgr_put_rsc(struct rsc_mgr *mgr, enum DAIOTYP type)
+{
+        ((union daio_usage *)mgr->rscs)->data &= ~(0x1 << type);
+
+        return 0;
+}
+
+static int get_daio_rsc(struct daio_mgr *mgr,
+                        const struct daio_desc *desc,
+                        struct daio **rdaio)
+{
+        int err = 0;
+        struct dai *dai = NULL;
+        struct dao *dao = NULL;
+        unsigned long flags;
+
+        *rdaio = NULL;
+
+        /* Check whether there are sufficient daio resources to meet request. */
+        spin_lock_irqsave(&mgr->mgr_lock, flags);
+        err = daio_mgr_get_rsc(&mgr->mgr, desc->type);
+        spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+        if (err) {
+                printk(KERN_ERR "Can't meet DAIO resource request!\n");
+                return err;
+        }
+
+        /* Allocate mem for daio resource */
+        if (desc->type <= DAIO_OUT_MAX) {
+                dao = kzalloc(sizeof(*dao), GFP_KERNEL);
+                if (NULL == dao) {
+                        err = -ENOMEM;
+                        goto error;
+                }
+                err = dao_rsc_init(dao, desc, mgr);
+                if (err)
+                        goto error;
+
+                *rdaio = &dao->daio;
+        } else {
+                dai = kzalloc(sizeof(*dai), GFP_KERNEL);
+                if (NULL == dai) {
+                        err = -ENOMEM;
+                        goto error;
+                }
+                err = dai_rsc_init(dai, desc, mgr);
+                if (err)
+                        goto error;
+
+                *rdaio = &dai->daio;
+        }
+
+        mgr->daio_enable(mgr, *rdaio);
+        mgr->commit_write(mgr);
+
+        return 0;
+
+error:
+        if (NULL != dao)
+                kfree(dao);
+        else if (NULL != dai)
+                kfree(dai);
+
+        spin_lock_irqsave(&mgr->mgr_lock, flags);
+        daio_mgr_put_rsc(&mgr->mgr, desc->type);
+        spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+        return err;
+}
+
+static int put_daio_rsc(struct daio_mgr *mgr, struct daio *daio)
+{
+        unsigned long flags;
+
+        mgr->daio_disable(mgr, daio);
+        mgr->commit_write(mgr);
+
+        spin_lock_irqsave(&mgr->mgr_lock, flags);
+        daio_mgr_put_rsc(&mgr->mgr, daio->type);
+        spin_unlock_irqrestore(&mgr->mgr_lock, flags);
+
+        if (daio->type <= DAIO_OUT_MAX) {
+                dao_rsc_uninit(container_of(daio, struct dao, daio));
+                kfree(container_of(daio, struct dao, daio));
+        } else {
+                dai_rsc_uninit(container_of(daio, struct dai, daio));
+                kfree(container_of(daio, struct dai, daio));
+        }
+
+        return 0;
+}
+
+static int daio_mgr_enb_daio(struct daio_mgr *mgr, struct daio *daio)
+{
+        struct hw *hw = mgr->mgr.hw;
+
+        if (DAIO_OUT_MAX >= daio->type) {
+                hw->daio_mgr_enb_dao(mgr->mgr.ctrl_blk,
+                                daio_device_index(daio->type, hw));
+        } else {
+                hw->daio_mgr_enb_dai(mgr->mgr.ctrl_blk,
+                                daio_device_index(daio->type, hw));
+        }
+        return 0;
+}
+
+static int daio_mgr_dsb_daio(struct daio_mgr *mgr, struct daio *daio)
+{
+        struct hw *hw = mgr->mgr.hw;
+
+        if (DAIO_OUT_MAX >= daio->type) {
+                hw->daio_mgr_dsb_dao(mgr->mgr.ctrl_blk,
+                                daio_device_index(daio->type, hw));
+        } else {
+                hw->daio_mgr_dsb_dai(mgr->mgr.ctrl_blk,
+                                daio_device_index(daio->type, hw));
+        }
+        return 0;
+}
+
+static int daio_map_op(void *data, struct imapper *entry)
+{
+        struct rsc_mgr *mgr = &((struct daio_mgr *)data)->mgr;
+        struct hw *hw = mgr->hw;
+
+        hw->daio_mgr_set_imaparc(mgr->ctrl_blk, entry->slot);
+        hw->daio_mgr_set_imapnxt(mgr->ctrl_blk, entry->next);
+        hw->daio_mgr_set_imapaddr(mgr->ctrl_blk, entry->addr);
+        hw->daio_mgr_commit_write(mgr->hw, mgr->ctrl_blk);
+
+        return 0;
+}
+
+static int daio_imap_add(struct daio_mgr *mgr, struct imapper *entry)
+{
+        unsigned long flags;
+        int err = 0;
+
+        spin_lock_irqsave(&mgr->imap_lock, flags);
+        if ((0 == entry->addr) && (mgr->init_imap_added)) {
+                input_mapper_delete(&mgr->imappers, mgr->init_imap,
+                                                        daio_map_op, mgr);
+                mgr->init_imap_added = 0;
+        }
+        err = input_mapper_add(&mgr->imappers, entry, daio_map_op, mgr);
+        spin_unlock_irqrestore(&mgr->imap_lock, flags);
+
+        return err;
+}
+
+static int daio_imap_delete(struct daio_mgr *mgr, struct imapper *entry)
+{
+        unsigned long flags;
+        int err = 0;
+
+        spin_lock_irqsave(&mgr->imap_lock, flags);
+        err = input_mapper_delete(&mgr->imappers, entry, daio_map_op, mgr);
+        if (list_empty(&mgr->imappers)) {
+                input_mapper_add(&mgr->imappers, mgr->init_imap,
+                                                        daio_map_op, mgr);
+                mgr->init_imap_added = 1;
+        }
+        spin_unlock_irqrestore(&mgr->imap_lock, flags);
+
+        return err;
+}
+
+static int daio_mgr_commit_write(struct daio_mgr *mgr)
+{
+        struct hw *hw = mgr->mgr.hw;
+
+        hw->daio_mgr_commit_write(hw, mgr->mgr.ctrl_blk);
+        return 0;
+}
+
+int daio_mgr_create(void *hw, struct daio_mgr **rdaio_mgr)
+{
+        int err = 0, i = 0;
+        struct daio_mgr *daio_mgr;
+        struct imapper *entry;
+
+        *rdaio_mgr = NULL;
+        daio_mgr = kzalloc(sizeof(*daio_mgr), GFP_KERNEL);
+        if (NULL == daio_mgr)
+                return -ENOMEM;
+
+        err = rsc_mgr_init(&daio_mgr->mgr, DAIO, DAIO_RESOURCE_NUM, hw);
+        if (err)
+                goto error1;
+
+        spin_lock_init(&daio_mgr->mgr_lock);
+        spin_lock_init(&daio_mgr->imap_lock);
+        INIT_LIST_HEAD(&daio_mgr->imappers);
+        entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+        if (NULL == entry) {
+                err = -ENOMEM;
+                goto error2;
+        }
+        entry->slot = entry->addr = entry->next = entry->user = 0;
+        list_add(&entry->list, &daio_mgr->imappers);
+        daio_mgr->init_imap = entry;
+        daio_mgr->init_imap_added = 1;
+
+        daio_mgr->get_daio = get_daio_rsc;
+        daio_mgr->put_daio = put_daio_rsc;
+        daio_mgr->daio_enable = daio_mgr_enb_daio;
+        daio_mgr->daio_disable = daio_mgr_dsb_daio;
+        daio_mgr->imap_add = daio_imap_add;
+        daio_mgr->imap_delete = daio_imap_delete;
+        daio_mgr->commit_write = daio_mgr_commit_write;
+
+        for (i = 0; i < 8; i++) {
+                ((struct hw *)hw)->daio_mgr_dsb_dao(daio_mgr->mgr.ctrl_blk, i);
+                ((struct hw *)hw)->daio_mgr_dsb_dai(daio_mgr->mgr.ctrl_blk, i);
+        }
+        ((struct hw *)hw)->daio_mgr_commit_write(hw, daio_mgr->mgr.ctrl_blk);
+
+        *rdaio_mgr = daio_mgr;
+
+        return 0;
+
+error2:
+        rsc_mgr_uninit(&daio_mgr->mgr);
+error1:
+        kfree(daio_mgr);
+        return err;
+}
+
+int daio_mgr_destroy(struct daio_mgr *daio_mgr)
+{
+        unsigned long flags;
+
+        /* free daio input mapper list */
+        spin_lock_irqsave(&daio_mgr->imap_lock, flags);
+        free_input_mapper_list(&daio_mgr->imappers);
+        spin_unlock_irqrestore(&daio_mgr->imap_lock, flags);
+
+        rsc_mgr_uninit(&daio_mgr->mgr);
+        kfree(daio_mgr);
+
+        return 0;
+}
+