usr/src/uts/common/io/usb/hubd/hubd.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26
  27 /*
  28  * skeleton hub driver, the actual code is in hubdi.c
  29  * as it is shared between the root hub and the other hub instances
  30  */
  31
  32 #include <sys/usb/usba/usbai_version.h>
  33 #include <sys/usb/usba.h>
  34 #include <sys/usb/usba/hubdi.h>
  35 #include <sys/usb/hubd/hub.h>
  36 #include <sys/usb/hubd/hubdvar.h>
  37
  38 static int hubd_open(dev_t *devp, int flags, int otyp, cred_t *credp);
  39 static int hubd_close(dev_t dev, int flag, int otyp, cred_t *credp);
  40 static int hubd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
  41         cred_t *credp, int *rvalp);
  42 static int hubd_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
  43         void *arg, void **result);
  44 extern int usba_hubdi_power(dev_info_t *dip, int comp, int level);
  45
  46
  47 static struct cb_ops hubd_cb_ops = {
  48         hubd_open,                      /* open */
  49         hubd_close,                     /* close */
  50         nodev,                          /* strategy */
  51         nodev,                          /* print */
  52         nodev,                          /* dump */
  53         nodev,                          /* read */
  54         nodev,                          /* write */
  55         hubd_ioctl,                     /* ioctl */
  56         nodev,                          /* devmap */
  57         nodev,                          /* mmap */
  58         nodev,                          /* segmap */
  59         nochpoll,                       /* poll */
  60         ddi_prop_op,                    /* cb_prop_op */
  61         NULL,                           /* streamtab */
  62         D_MP                            /* Driver compatibility flag */
  63 };
  64
  65 static struct dev_ops hubd_ops = {
  66         DEVO_REV,               /* devo_rev, */
  67         0,                      /* refcnt  */
  68         hubd_info,              /* info */
  69         nulldev,                /* identify */
  70         nulldev,                /* probe */
  71         usba_hubdi_attach,      /* attach */
  72         usba_hubdi_detach,      /* detach */
  73         nodev,                  /* reset */
  74         &hubd_cb_ops,           /* driver operations */
  75         &usba_hubdi_busops,     /* bus operations */
  76         usba_hubdi_power,       /* power */
  77         ddi_quiesce_not_needed,         /* quiesce */
  78 };
  79
  80 static struct modldrv modldrv = {
  81         &mod_driverops, /* Type of module. This one is a driver */
  82         "USB Hub Driver", /* Name of the module. */
  83         &hubd_ops,      /* driver ops */
  84 };
  85
  86 static struct modlinkage modlinkage = {
  87         MODREV_1, (void *)&modldrv, NULL
  88 };
  89
  90
  91 extern void *hubd_statep;
  92
  93 int
  94 _init(void)
  95 {
  96         int rval;
  97
  98         /* Initialize the soft state structures */
  99         if ((rval = ddi_soft_state_init(&hubd_statep,
 100             sizeof (hubd_t), HUBD_INITIAL_SOFT_SPACE)) != 0) {
 101                 return (rval);
 102         }
 103
 104         if ((rval = mod_install(&modlinkage)) != 0) {
 105                 ddi_soft_state_fini(&hubd_statep);
 106
 107                 return (rval);
 108         }
 109
 110         return (rval);
 111 }
 112
 113
 114 int
 115 _fini(void)
 116 {
 117         int rval = mod_remove(&modlinkage);
 118         if (rval == 0) {
 119                 ddi_soft_state_fini(&hubd_statep);
 120         }
 121
 122         return (rval);
 123 }
 124
 125
 126 int
 127 _info(struct modinfo *modinfop)
 128 {
 129         return (mod_info(&modlinkage, modinfop));
 130 }
 131
 132
 133 static dev_info_t *
 134 hubd_get_dip(dev_t dev)
 135 {
 136         minor_t minor = getminor(dev);
 137         int instance = (int)minor & ~HUBD_IS_ROOT_HUB;
 138         hubd_t *hubd = ddi_get_soft_state(hubd_statep, instance);
 139
 140         if (hubd) {
 141                 return (hubd->h_dip);
 142         } else {
 143                 return (NULL);
 144         }
 145 }
 146
 147 /*
 148  * info handler
 149  */
 150 /*ARGSUSED*/
 151 int
 152 hubd_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
 153         void *arg, void **result)
 154 {
 155         dev_t dev;
 156         int instance;
 157         int error = DDI_FAILURE;
 158
 159         switch (infocmd) {
 160         case DDI_INFO_DEVT2DEVINFO:
 161                 *result = (void *)hubd_get_dip((dev_t)arg);
 162                 if (*result != NULL) {
 163                         error = DDI_SUCCESS;
 164                 }
 165                 break;
 166         case DDI_INFO_DEVT2INSTANCE:
 167                 dev = (dev_t)arg;
 168                 instance = HUBD_UNIT(dev);
 169                 *result = (void *)(intptr_t)instance;
 170                 error = DDI_SUCCESS;
 171                 break;
 172         default:
 173                 break;
 174         }
 175         return (error);
 176 }
 177
 178 static int
 179 hubd_open(dev_t *devp, int flags, int otyp, cred_t *credp)
 180 {
 181         dev_info_t *dip = hubd_get_dip(*devp);
 182
 183         return (usba_hubdi_open(dip, devp, flags, otyp, credp));
 184 }
 185
 186
 187 static int
 188 hubd_close(dev_t dev, int flag, int otyp, cred_t *credp)
 189 {
 190         dev_info_t *dip = hubd_get_dip(dev);
 191
 192         return (usba_hubdi_close(dip, dev, flag, otyp, credp));
 193 }
 194
 195
 196 static int
 197 hubd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
 198         cred_t *credp, int *rvalp)
 199 {
 200         dev_info_t *dip = hubd_get_dip(dev);
 201
 202         return (usba_hubdi_ioctl(dip, dev, cmd, arg, mode,
 203             credp, rvalp));
 204 }