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 #if defined(lint) && !defined(DEBUG)
  32 #define DEBUG   1
  33 #endif
  34 
  35 #include <sys/usb/usba/usbai_version.h>
  36 #include <sys/usb/usba.h>
  37 #include <sys/usb/usba/hubdi.h>
  38 #include <sys/usb/hubd/hub.h>
  39 #include <sys/usb/hubd/hubdvar.h>
  40 
  41 static int hubd_open(dev_t *devp, int flags, int otyp, cred_t *credp);
  42 static int hubd_close(dev_t dev, int flag, int otyp, cred_t *credp);
  43 static int hubd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
  44         cred_t *credp, int *rvalp);
  45 static int hubd_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
  46         void *arg, void **result);
  47 extern int usba_hubdi_power(dev_info_t *dip, int comp, int level);
  48 
  49 
  50 static struct cb_ops hubd_cb_ops = {
  51         hubd_open,                      /* open */
  52         hubd_close,                     /* close */
  53         nodev,                          /* strategy */
  54         nodev,                          /* print */
  55         nodev,                          /* dump */
  56         nodev,                          /* read */
  57         nodev,                          /* write */
  58         hubd_ioctl,                     /* ioctl */
  59         nodev,                          /* devmap */
  60         nodev,                          /* mmap */
  61         nodev,                          /* segmap */
  62         nochpoll,                       /* poll */
  63         ddi_prop_op,                    /* cb_prop_op */
  64         NULL,                           /* streamtab */
  65         D_MP                            /* Driver compatibility flag */
  66 };
  67 
  68 static struct dev_ops hubd_ops = {
  69         DEVO_REV,               /* devo_rev, */
  70         0,                      /* refcnt  */
  71         hubd_info,              /* info */
  72         nulldev,                /* identify */
  73         nulldev,                /* probe */
  74         usba_hubdi_attach,      /* attach */
  75         usba_hubdi_detach,      /* detach */
  76         nodev,                  /* reset */
  77         &hubd_cb_ops,               /* driver operations */
  78         &usba_hubdi_busops, /* bus operations */
  79         usba_hubdi_power,       /* power */
  80         ddi_quiesce_not_needed,         /* quiesce */
  81 };
  82 
  83 static struct modldrv modldrv = {
  84         &mod_driverops, /* Type of module. This one is a driver */
  85         "USB Hub Driver", /* Name of the module. */
  86         &hubd_ops,  /* driver ops */
  87 };
  88 
  89 static struct modlinkage modlinkage = {
  90         MODREV_1, { (void *)&modldrv, NULL }
  91 };
  92 
  93 
  94 extern void *hubd_statep;
  95 
  96 int
  97 _init(void)
  98 {
  99         int rval;
 100 
 101         /* Initialize the soft state structures */
 102         if ((rval = ddi_soft_state_init(&hubd_statep,
 103             sizeof (hubd_t), HUBD_INITIAL_SOFT_SPACE)) != 0) {
 104                 return (rval);
 105         }
 106 
 107         if ((rval = mod_install(&modlinkage)) != 0) {
 108                 ddi_soft_state_fini(&hubd_statep);
 109 
 110                 return (rval);
 111         }
 112 
 113         return (rval);
 114 }
 115 
 116 
 117 int
 118 _fini(void)
 119 {
 120         int rval = mod_remove(&modlinkage);
 121         if (rval == 0) {
 122                 ddi_soft_state_fini(&hubd_statep);
 123         }
 124 
 125         return (rval);
 126 }
 127 
 128 
 129 int
 130 _info(struct modinfo *modinfop)
 131 {
 132         return (mod_info(&modlinkage, modinfop));
 133 }
 134 
 135 
 136 static dev_info_t *
 137 hubd_get_dip(dev_t dev)
 138 {
 139         minor_t minor = getminor(dev);
 140         int instance = (int)minor & ~HUBD_IS_ROOT_HUB;
 141         hubd_t *hubd = ddi_get_soft_state(hubd_statep, instance);
 142 
 143         if (hubd) {
 144                 return (hubd->h_dip);
 145         } else {
 146                 return (NULL);
 147         }
 148 }
 149 
 150 /*
 151  * info handler
 152  */
 153 /*ARGSUSED*/
 154 int
 155 hubd_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
 156         void *arg, void **result)
 157 {
 158         dev_t dev;
 159         int instance;
 160         int error = DDI_FAILURE;
 161 
 162         switch (infocmd) {
 163         case DDI_INFO_DEVT2DEVINFO:
 164                 *result = (void *)hubd_get_dip((dev_t)arg);
 165                 if (*result != NULL) {
 166                         error = DDI_SUCCESS;
 167                 }
 168                 break;
 169         case DDI_INFO_DEVT2INSTANCE:
 170                 dev = (dev_t)arg;
 171                 instance = HUBD_UNIT(dev);
 172                 *result = (void *)(intptr_t)instance;
 173                 error = DDI_SUCCESS;
 174                 break;
 175         default:
 176                 break;
 177         }
 178         return (error);
 179 }
 180 
 181 static int
 182 hubd_open(dev_t *devp, int flags, int otyp, cred_t *credp)
 183 {
 184         dev_info_t *dip = hubd_get_dip(*devp);
 185 
 186         return (usba_hubdi_open(dip, devp, flags, otyp, credp));
 187 }
 188 
 189 
 190 static int
 191 hubd_close(dev_t dev, int flag, int otyp, cred_t *credp)
 192 {
 193         dev_info_t *dip = hubd_get_dip(dev);
 194 
 195         return (usba_hubdi_close(dip, dev, flag, otyp, credp));
 196 }
 197 
 198 
 199 static int
 200 hubd_ioctl(dev_t dev, int cmd, intptr_t arg, int mode,
 201         cred_t *credp, int *rvalp)
 202 {
 203         dev_info_t *dip = hubd_get_dip(dev);
 204 
 205         return (usba_hubdi_ioctl(dip, dev, cmd, arg, mode,
 206             credp, rvalp));
 207 }