sdcard/impl/sda_host.c

	sda_host.c revision 4bb7efa72ed531c10f097919636e67724ec4c25a
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * SD card host support.  This is the API that host drivers access.
 */

#include <sys/types.h>
#include <sys/conf.h>
#include <sys/cmn_err.h>
#include <sys/varargs.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/sdcard/sda.h>
#include <sys/sdcard/sda_impl.h>

/*
 * Static Variables.
 */

static struct bus_ops sda_host_bus_ops = {
    BUSO_REV,           /* busops_rev */
    nullbusmap,         /* bus_map */
    NULL,               /* bus_get_intrspec (OBSOLETE) */
    NULL,               /* bus_add_intrspec (OBSOLETE) */
    NULL,               /* bus_remove_intrspec (OBSOLETE) */
    i_ddi_map_fault,        /* bus_map_fault */
    ddi_dma_map,            /* bus_dma_map */
    ddi_dma_allochdl,       /* bus_dma_allochdl */
    ddi_dma_freehdl,        /* bus_dma_freehdl */
    ddi_dma_bindhdl,        /* bus_dma_bindhdl */
    ddi_dma_unbindhdl,      /* bus_dma_unbindhdl */
    ddi_dma_flush,          /* bus_dma_flush */
    ddi_dma_win,            /* bus_dma_win */
    ddi_dma_mctl,           /* bus_dma_ctl */
    sda_nexus_bus_ctl,      /* bus_ctl */
    ddi_bus_prop_op,        /* bus_prop_op */
    NULL,               /* bus_get_eventcookie */
    NULL,               /* bus_add_eventcall */
    NULL,               /* bus_remove_eventcall */
    NULL,               /* bus_post_event */
    NULL,               /* bus_intr_ctl (OBSOLETE) */
    NULL, /* sda_nexus_bus_config, */       /* bus_config */
    NULL, /* sda_nexus_bus_unconfig, */     /* bus_unconfig */
    NULL,               /* bus_fm_init */
    NULL,               /* bus_fm_fini */
    NULL,               /* bus_fm_access_enter */
    NULL,               /* bus_fm_access_exit */
    NULL,               /* bus_power */
    NULL,               /* bus_intr_op */
};

static struct cb_ops sda_host_cb_ops = {
    sda_nexus_open,         /* cb_open */
    sda_nexus_close,        /* cb_close */
    nodev,              /* cb_strategy */
    nodev,              /* cb_print */
    nodev,              /* cb_dump */
    nodev,              /* cb_read */
    nodev,              /* cb_write */
    sda_nexus_ioctl,        /* cb_ioctl */
    nodev,              /* cb_devmap */
    nodev,              /* cb_mmap */
    nodev,              /* cb_segmap */
    nochpoll,           /* cb_poll */
    ddi_prop_op,            /* cb_prop_op */
    NULL,               /* cb_str */
    D_MP,               /* cb_flag */
    CB_REV,             /* cb_rev */
    nodev,              /* cb_aread */
    nodev,              /* cb_awrite */
};

/*
 * Implementation.
 */

void
sda_host_init_ops(struct dev_ops *devops)
{
    devops->devo_getinfo = sda_nexus_getinfo;
    devops->devo_cb_ops = &sda_host_cb_ops;
    devops->devo_bus_ops = &sda_host_bus_ops;
}

void
sda_host_fini_ops(struct dev_ops *devops)
{
    devops->devo_bus_ops = NULL;
}

sda_host_t *
sda_host_alloc(dev_info_t *dip, int nslot, sda_ops_t *ops, ddi_dma_attr_t *dma)
{
    sda_host_t  *h;
    int     i;

    if (ops->so_version != SDA_OPS_VERSION) {
        return (NULL);
    }

    h = kmem_zalloc(sizeof (*h), KM_SLEEP);
    h->h_nslot = nslot;
    h->h_slots = kmem_zalloc(sizeof (sda_slot_t) * nslot, KM_SLEEP);
    h->h_dma = dma;
    h->h_dip = dip;

    /* initialize each slot */
    for (i = 0; i < nslot; i++) {
        sda_slot_t *slot = &h->h_slots[i];

        slot->s_host = h;
        slot->s_slot_num = i;
        slot->s_ops = *ops;

        sda_slot_init(slot);
    }

    return (h);
}

void
sda_host_free(sda_host_t *h)
{
    int i;

    for (i = 0; i < h->h_nslot; i++) {
        sda_slot_fini(&h->h_slots[i]);
    }

    kmem_free(h->h_slots, sizeof (sda_slot_t) * h->h_nslot);
    kmem_free(h, sizeof (*h));
}

void
sda_host_set_private(sda_host_t *h, int num, void *private)
{
    h->h_slots[num].s_prv = private;
}

int
sda_host_attach(sda_host_t *h)
{
    int i;

    /*
     * Attach slots.
     */
    for (i = 0; i < h->h_nslot; i++) {

        sda_slot_attach(&h->h_slots[i]);

        /*
         * Initiate card detection.
         */
        sda_host_detect(h, i);
    }

    /*
     * Register (create) nexus minor nodes.
     */
    sda_nexus_register(h);

    return (DDI_SUCCESS);
}

void
sda_host_detach(sda_host_t *h)
{
    int i;

    /*
     * Unregister nexus minor nodes.
     */
    sda_nexus_unregister(h);

    /*
     * Detach slots.
     */
    for (i = 0; i < h->h_nslot; i++) {
        sda_slot_detach(&h->h_slots[i]);
    }
}

void
sda_host_transfer(sda_host_t *h, int num, sda_err_t errno)
{
    sda_slot_transfer(&h->h_slots[num], errno);
}

void
sda_host_detect(sda_host_t *h, int num)
{
    sda_slot_detect(&h->h_slots[num]);
}

void
sda_host_fault(sda_host_t *h, int num, sda_fault_t fail)
{
    sda_slot_fault(&h->h_slots[num], fail);
}

void
sda_host_log(sda_host_t *h, int snum, const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    if (h != NULL) {
        sda_slot_log(&h->h_slots[snum], fmt, ap);
    } else {
        sda_slot_log(NULL, fmt, ap);
    }
    va_end(ap);
}