sdcard/impl/sda_host.c

/*
 * 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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * 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>

/*
 * Implementation.
 */

void
sda_host_init_ops(struct dev_ops *devops)
{
    bd_mod_init(devops);
}

void
sda_host_fini_ops(struct dev_ops *devops)
{
    bd_mod_fini(devops);
}

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;

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

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

        sda_slot_init(slot);
    }

    return (h);
}

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

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

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

    return (DDI_SUCCESS);
}

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

void
sda_host_suspend(sda_host_t *h)
{
    for (int i = 0; i < h->h_nslot; i++) {
        sda_slot_suspend(&h->h_slots[i]);
    }
}

void
sda_host_resume(sda_host_t *h)
{
    for (int i = 0; i < h->h_nslot; i++) {
        sda_slot_resume(&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);
}