sys/dev/ic/icp_ioctl.c

   1 /*      $NetBSD: icp_ioctl.c,v 1.18 2008/04/28 20:23:50 martin Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of Wasabi Systems, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  *       Copyright (c) 2000-01 Intel Corporation
  34  *       All Rights Reserved
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions, and the following disclaimer,
  41  *    without modification, immediately at the beginning of the file.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. The name of the author may not be used to endorse or promote products
  46  *    derived from this software without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  52  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  */
  60
  61 /*
  62  * icp_ioctl.c: Ioctl interface for the ICP-Vortex management tools.
  63  *
  64  * Based on ICP's FreeBSD "iir" driver ioctl interface, written by
  65  * Achim Leubner <achim.leubner@intel.com>.
  66  *
  67  * This is intended to be ABI-compatile with the ioctl interface for
  68  * other OSs.
  69  */
  70
  71 #include <sys/cdefs.h>
  72 __KERNEL_RCSID(0, "$NetBSD: icp_ioctl.c,v 1.18 2008/04/28 20:23:50 martin Exp $");
  73
  74 #include <sys/param.h>
  75 #include <sys/systm.h>
  76 #include <sys/kernel.h>
  77 #include <sys/device.h>
  78 #include <sys/proc.h>
  79 #include <sys/conf.h>
  80 #include <sys/ioctl.h>
  81 #include <sys/kauth.h>
  82
  83 #include <sys/bus.h>
  84
  85 #include <dev/ic/icpreg.h>
  86 #include <dev/ic/icpvar.h>
  87
  88 /* These are simply the same as ICP's "iir" driver for FreeBSD. */
  89 #define ICP_DRIVER_VERSION              1
  90 #define ICP_DRIVER_SUBVERSION           3
  91
  92 static dev_type_open(icpopen);
  93 static dev_type_ioctl(icpioctl);
  94
  95 const struct cdevsw icp_cdevsw = {
  96         icpopen, nullclose, noread, nowrite, icpioctl,
  97         nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
  98 };
  99
 100 extern struct cfdriver icp_cd;
 101
 102 kmutex_t icp_ioctl_mutex;
 103
 104 static int
 105 icpopen(dev_t dev, int flag, int mode, struct lwp *l)
 106 {
 107
 108         if (device_lookup(&icp_cd, minor(dev)) == NULL)
 109                 return (ENXIO);
 110
 111         return (0);
 112 }
 113
 114 static int
 115 icpioctl(dev_t dev, u_long cmd, void *data, int flag,
 116     struct lwp *l)
 117 {
 118         int error = 0;
 119
 120         mutex_enter(&icp_ioctl_mutex);
 121
 122         switch (cmd) {
 123         case GDT_IOCTL_GENERAL:
 124             {
 125                 struct icp_softc *icp;
 126                 gdt_ucmd_t *ucmd = (void *) data;
 127
 128                 error = kauth_authorize_device_passthru(l->l_cred, dev,
 129                     KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_ALL, data);
 130                 if (error)
 131                         break;
 132
 133                 icp = device_lookup_private(&icp_cd, ucmd->io_node);
 134                 if (icp == NULL) {
 135                         error = ENXIO;
 136                         break;
 137                 }
 138
 139                 error = icp_ucmd(icp, ucmd);
 140                 break;
 141             }
 142
 143         case GDT_IOCTL_DRVERS:
 144                 *(int *) data =
 145                     (ICP_DRIVER_VERSION << 8) | ICP_DRIVER_SUBVERSION;
 146                 break;
 147
 148         case GDT_IOCTL_CTRTYPE:
 149             {
 150                 struct icp_softc *icp;
 151                 gdt_ctrt_t *ctrt = (void *) data;
 152
 153                 icp = device_lookup_private(&icp_cd, ctrt->io_node);
 154                 if (icp == NULL) {
 155                         error = ENXIO;
 156                         break;
 157                 }
 158
 159                 /* XXX magic numbers */
 160                 ctrt->oem_id = 0x8000;
 161                 ctrt->type = 0xfd;
 162                 ctrt->info = (icp->icp_pci_bus << 8) | (icp->icp_pci_device << 3);
 163                 ctrt->ext_type = 0x6000 | icp->icp_pci_subdevice_id;
 164                 ctrt->device_id = icp->icp_pci_device_id;
 165                 ctrt->sub_device_id = icp->icp_pci_subdevice_id;
 166                 break;
 167             }
 168
 169         case GDT_IOCTL_OSVERS:
 170             {
 171                 gdt_osv_t *osv = (void *) data;
 172
 173                 osv->oscode = 12;
 174
 175                 /*
 176                  * __NetBSD_Version__ is encoded thusly:
 177                  *
 178                  *      MMmmrrpp00
 179                  *
 180                  * M = major version
 181                  * m = minor version
 182                  * r = release ["",A-Z[A-Z] but numeric]
 183                  * p = patchlevel
 184                  *
 185                  * Since the ABI is not supposed to change between
 186                  * patchlevels of the same major/minor version, we
 187                  * will encode major/minor/release into the returned
 188                  * data.
 189                  */
 190
 191                 osv->version = __NetBSD_Version__ / 100000000;
 192                 osv->subversion = (__NetBSD_Version__ / 1000000) % 100;
 193                 osv->revision = (__NetBSD_Version__ / 10000) % 100;
 194
 195                 strcpy(osv->name, ostype);
 196                 break;
 197             }
 198
 199         case GDT_IOCTL_CTRCNT:
 200                 *(int *) data = icp_count;
 201                 break;
 202
 203         case GDT_IOCTL_EVENT:
 204             {
 205                 struct icp_softc *icp;
 206                 gdt_event_t *evt = (void *) data;
 207                 gdt_evt_str *e = &evt->dvr;
 208                 int s;
 209
 210                 icp = device_lookup_private(&icp_cd, minor(dev));
 211
 212                 switch (evt->erase) {
 213                 case 0xff:
 214                         switch (evt->dvr.event_source) {
 215                         case GDT_ES_TEST:
 216                                 e->event_data.size =
 217                                     sizeof(e->event_data.eu.test);
 218                                 break;
 219
 220                         case GDT_ES_DRIVER:
 221                                 e->event_data.size =
 222                                     sizeof(e->event_data.eu.driver);
 223                                 break;
 224
 225                         case GDT_ES_SYNC:
 226                                 e->event_data.size =
 227                                     sizeof(e->event_data.eu.sync);
 228                                 break;
 229
 230                         default:
 231                                 e->event_data.size =
 232                                     sizeof(e->event_data.eu.async);
 233                                 break;
 234                         }
 235                         s = splbio();
 236                         icp_store_event(icp, e->event_source, e->event_idx,
 237                             &e->event_data);
 238                         splx(s);
 239                         break;
 240
 241                 case 0xfe:
 242                         s = splbio();
 243                         icp_clear_events(icp);
 244                         splx(s);
 245                         break;
 246
 247                 case 0:
 248                         evt->handle = icp_read_event(icp, evt->handle, e);
 249                         break;
 250
 251                 default:
 252                         icp_readapp_event(icp, (u_int8_t) evt->erase, e);
 253                         break;
 254                 }
 255                 break;
 256             }
 257
 258         case GDT_IOCTL_STATIST:
 259                 memcpy(&icp_stats, data, sizeof(gdt_statist_t));
 260                 break;
 261
 262
 263         case GDT_IOCTL_RESCAN:
 264             {
 265                 struct icp_softc *icp;
 266                 gdt_rescan_t *rsc = (void *) data;
 267
 268                 icp = device_lookup_private(&icp_cd, rsc->io_node);
 269                 if (icp == NULL) {
 270                         error = ENXIO;
 271                         break;
 272                 }
 273
 274                 error = icp_freeze(icp);
 275                 if (error)
 276                         break;
 277                 if (rsc->flag == 0)
 278                         icp_rescan_all(icp);
 279                 else
 280                         icp_rescan(icp, rsc->hdr_no);
 281                 icp_unfreeze(icp);
 282                 break;
 283             }
 284
 285         default:
 286                 error = ENOTTY;
 287         }
 288
 289         mutex_exit(&icp_ioctl_mutex);
 290
 291         return (error);
 292 }