/*
 * 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.
 */


/*
 * skeleton hub driver, the actual code is in hubdi.c
 * as it is shared between the root hub and the other hub instances
 */
#if defined(lint) && !defined(DEBUG)
#define DEBUG   1
#endif

#include <sys/usb/usba/usbai_version.h>
#include <sys/usb/usba.h>
#include <sys/usb/usba/hubdi.h>
#include <sys/usb/hubd/hub.h>
#include <sys/usb/hubd/hubdvar.h>

static int hubd_open(dev_t *devp, int flags, int otyp, cred_t *credp);
static int hubd_close(dev_t dev, int flag, int otyp, cred_t *credp);
static int hubd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
        cred_t *credp, int *rvalp);
static int hubd_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
        void *arg, void **result);
extern int usba_hubdi_power(dev_info_t *dip, int comp, int level);


static struct cb_ops hubd_cb_ops = {
        hubd_open,                      /* open */
        hubd_close,                     /* close */
        nodev,                          /* strategy */
        nodev,                          /* print */
        nodev,                          /* dump */
        nodev,                          /* read */
        nodev,                          /* write */
        hubd_ioctl,                     /* ioctl */
        nodev,                          /* devmap */
        nodev,                          /* mmap */
        nodev,                          /* segmap */
        nochpoll,                       /* poll */
        ddi_prop_op,                    /* cb_prop_op */
        NULL,                           /* streamtab */
        D_MP                            /* Driver compatibility flag */
};

static struct dev_ops hubd_ops = {
        DEVO_REV,               /* devo_rev, */
        0,                      /* refcnt  */
        hubd_info,              /* info */
        nulldev,                /* identify */
        nulldev,                /* probe */
        usba_hubdi_attach,      /* attach */
        usba_hubdi_detach,      /* detach */
        nodev,                  /* reset */
        &hubd_cb_ops,           /* driver operations */
        &usba_hubdi_busops,     /* bus operations */
        usba_hubdi_power,       /* power */
        ddi_quiesce_not_needed,         /* quiesce */
};

static struct modldrv modldrv = {
        &mod_driverops, /* Type of module. This one is a driver */
        "USB Hub Driver", /* Name of the module. */
        &hubd_ops,      /* driver ops */
};

static struct modlinkage modlinkage = {
        MODREV_1, (void *)&modldrv, NULL
};


extern void *hubd_statep;

int
_init(void)
{
        int rval;

        /* Initialize the soft state structures */
        if ((rval = ddi_soft_state_init(&hubd_statep,
            sizeof (hubd_t), HUBD_INITIAL_SOFT_SPACE)) != 0) {
                return (rval);
        }

        if ((rval = mod_install(&modlinkage)) != 0) {
                ddi_soft_state_fini(&hubd_statep);

                return (rval);
        }

        return (rval);
}


int
_fini(void)
{
        int rval = mod_remove(&modlinkage);
        if (rval == 0) {
                ddi_soft_state_fini(&hubd_statep);
        }

        return (rval);
}


int
_info(struct modinfo *modinfop)
{
        return (mod_info(&modlinkage, modinfop));
}


static dev_info_t *
hubd_get_dip(dev_t dev)
{
        minor_t minor = getminor(dev);
        int instance = (int)minor & ~HUBD_IS_ROOT_HUB;
        hubd_t *hubd = ddi_get_soft_state(hubd_statep, instance);

        if (hubd) {
                return (hubd->h_dip);
        } else {
                return (NULL);
        }
}

/*
 * info handler
 */
/*ARGSUSED*/
int
hubd_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
        void *arg, void **result)
{
        dev_t dev;
        int instance;
        int error = DDI_FAILURE;

        switch (infocmd) {
        case DDI_INFO_DEVT2DEVINFO:
                *result = (void *)hubd_get_dip((dev_t)arg);
                if (*result != NULL) {
                        error = DDI_SUCCESS;
                }
                break;
        case DDI_INFO_DEVT2INSTANCE:
                dev = (dev_t)arg;
                instance = HUBD_UNIT(dev);
                *result = (void *)(intptr_t)instance;
                error = DDI_SUCCESS;
                break;
        default:
                break;
        }
        return (error);
}

static int
hubd_open(dev_t *devp, int flags, int otyp, cred_t *credp)
{
        dev_info_t *dip = hubd_get_dip(*devp);

        return (usba_hubdi_open(dip, devp, flags, otyp, credp));
}


static int
hubd_close(dev_t dev, int flag, int otyp, cred_t *credp)
{
        dev_info_t *dip = hubd_get_dip(dev);

        return (usba_hubdi_close(dip, dev, flag, otyp, credp));
}


static int
hubd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
        cred_t *credp, int *rvalp)
{
        dev_info_t *dip = hubd_get_dip(dev);

        return (usba_hubdi_ioctl(dip, dev, cmd, arg, mode,
            credp, rvalp));
}