sys/dev/drm/drm_drv.c

   1 /**
   2  * \file drm_drv.c
   3  * Generic driver template
   4  *
   5  * \author Rickard E. (Rik) Faith <faith@valinux.com>
   6  * \author Gareth Hughes <gareth@valinux.com>
   7  *
   8  * To use this template, you must at least define the following (samples
   9  * given for the MGA driver):
  10  *
  11  * \code
  12  * #define DRIVER_AUTHOR        "VA Linux Systems, Inc."
  13  *
  14  * #define DRIVER_NAME          "mga"
  15  * #define DRIVER_DESC          "Matrox G200/G400"
  16  * #define DRIVER_DATE          "20001127"
  17  *
  18  * #define drm_x                mga_##x
  19  * \endcode
  20  */
  21
  22 /*
  23  * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
  24  *
  25  * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
  26  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  27  * All Rights Reserved.
  28  *
  29  * Permission is hereby granted, free of charge, to any person obtaining a
  30  * copy of this software and associated documentation files (the "Software"),
  31  * to deal in the Software without restriction, including without limitation
  32  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  33  * and/or sell copies of the Software, and to permit persons to whom the
  34  * Software is furnished to do so, subject to the following conditions:
  35  *
  36  * The above copyright notice and this permission notice (including the next
  37  * paragraph) shall be included in all copies or substantial portions of the
  38  * Software.
  39  *
  40  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  41  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  42  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  43  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  44  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  45  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  46  * OTHER DEALINGS IN THE SOFTWARE.
  47  */
  48
  49 #include <sys/devfs.h>
  50
  51 #include <linux/export.h>
  52 #include <drm/drmP.h>
  53 #include <drm/drm_core.h>
  54
  55 #if DRM_DEBUG_DEFAULT_ON == 1
  56 #define DRM_DEBUGBITS_ON (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | \
  57     DRM_DEBUGBITS_FAILED_IOCTL)
  58 #elif DRM_DEBUG_DEFAULT_ON == 2
  59 #define DRM_DEBUGBITS_ON (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | \
  60     DRM_DEBUGBITS_FAILED_IOCTL | DRM_DEBUGBITS_VERBOSE)
  61 #else
  62 #define DRM_DEBUGBITS_ON (0x0)
  63 #endif
  64
  65 int drm_notyet_flag = 0;
  66
  67 static int drm_load(struct drm_device *dev);
  68 drm_pci_id_list_t *drm_find_description(int vendor, int device,
  69     drm_pci_id_list_t *idlist);
  70
  71 #define DRIVER_SOFTC(unit) \
  72         ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
  73
  74 static int
  75 drm_modevent(module_t mod, int type, void *data)
  76 {
  77
  78         switch (type) {
  79         case MOD_LOAD:
  80                 TUNABLE_INT_FETCH("drm.debug", &drm_debug);
  81                 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag);
  82                 break;
  83         }
  84         return (0);
  85 }
  86
  87 static moduledata_t drm_mod = {
  88         "drm",
  89         drm_modevent,
  90         0
  91 };
  92 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
  93 MODULE_VERSION(drm, 1);
  94 MODULE_DEPEND(drm, agp, 1, 1, 1);
  95 MODULE_DEPEND(drm, pci, 1, 1, 1);
  96 MODULE_DEPEND(drm, iicbus, 1, 1, 1);
  97
  98 #define DRM_IOCTL_DEF(ioctl, _func, _flags) \
  99         [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0, .name = #ioctl}
 100
 101 /** Ioctl table */
 102 static struct drm_ioctl_desc drm_ioctls[] = {
 103         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED),
 104         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
 105         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
 106         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
 107         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, DRM_UNLOCKED),
 108         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED),
 109         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED),
 110         DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED),
 111         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER),
 112
 113         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 114         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 115         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 116         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER),
 117
 118         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 119         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
 120
 121         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 122         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
 123
 124         DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY),
 125         DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY),
 126
 127         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
 128         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 129         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 130         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
 131         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 132         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 133         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
 134
 135         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 136         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 137
 138         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
 139         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
 140
 141         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
 142
 143         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 144         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 145         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
 146         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
 147         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
 148         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
 149
 150         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 151
 152         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 153         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 154         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 155         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
 156         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 157         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 158         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 159         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 160
 161         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 162         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 163
 164         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED),
 165
 166         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
 167
 168         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 169
 170         DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
 171         DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
 172         DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
 173
 174         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 175
 176 #if 0
 177         DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED),
 178         DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED),
 179 #endif
 180
 181         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 182         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 183         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 184         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 185         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 186         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 187         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED),
 188         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
 189         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 190         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 191         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 192         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 193         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 194         DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 195         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 196         DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 197         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 198         DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 199         DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 200         DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 201         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 202         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 203         DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 204         DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 205         DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 206         DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 207         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 208 };
 209
 210 #define DRM_CORE_IOCTL_COUNT    ARRAY_SIZE( drm_ioctls )
 211
 212 static struct dev_ops drm_cdevsw = {
 213         { "drm", 0, D_TRACKCLOSE | D_MPSAFE },
 214         .d_open =       drm_open,
 215         .d_close =      drm_close,
 216         .d_read =       drm_read,
 217         .d_ioctl =      drm_ioctl,
 218         .d_kqfilter =   drm_kqfilter,
 219         .d_mmap =       drm_mmap,
 220         .d_mmap_single = drm_mmap_single,
 221 };
 222
 223 static int drm_msi = 0; /* Disable by default. This is because there are issues with
 224                            freezes using MSI and i915
 225                          */
 226 TUNABLE_INT("hw.drm.msi.enable", &drm_msi);
 227 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
 228 SYSCTL_NODE(_hw_drm, OID_AUTO, msi, CTLFLAG_RW, NULL, "DRM device msi");
 229 SYSCTL_INT(_hw_drm_msi, OID_AUTO, enable, CTLFLAG_RD, &drm_msi, 0,
 230     "Enable MSI interrupts for drm devices");
 231 SYSCTL_INT(_hw_drm, OID_AUTO, debug, CTLFLAG_RW, &drm_debug, 0,
 232     "DRM debugging");
 233
 234 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
 235         {0x8086, 0x2772}, /* Intel i945G        */ \
 236         {0x8086, 0x27A2}, /* Intel i945GM       */ \
 237         {0x8086, 0x27AE}, /* Intel i945GME      */ \
 238         {0, 0}
 239 };
 240
 241 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags)
 242 {
 243         int i = 0;
 244
 245         if (dev->driver->use_msi != NULL) {
 246                 int use_msi;
 247
 248                 use_msi = dev->driver->use_msi(dev, flags);
 249
 250                 return (!use_msi);
 251         }
 252
 253         /* TODO: Maybe move this to a callback in i915? */
 254         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
 255                 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) &&
 256                     (drm_msi_blacklist[i].device == dev->pci_device)) {
 257                         return 1;
 258                 }
 259         }
 260
 261         return 0;
 262 }
 263
 264 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
 265 {
 266         drm_pci_id_list_t *id_entry;
 267         int vendor, device;
 268
 269         vendor = pci_get_vendor(kdev);
 270         device = pci_get_device(kdev);
 271
 272         if (pci_get_class(kdev) != PCIC_DISPLAY)
 273                 return ENXIO;
 274
 275         id_entry = drm_find_description(vendor, device, idlist);
 276         if (id_entry != NULL) {
 277                 if (!device_get_desc(kdev)) {
 278                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
 279                         device_set_desc(kdev, id_entry->name);
 280                 }
 281                 return 0;
 282         }
 283
 284         return ENXIO;
 285 }
 286
 287 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
 288 {
 289         struct drm_device *dev;
 290         drm_pci_id_list_t *id_entry;
 291         int unit, error;
 292         u_int irq_flags;
 293         int msi_enable;
 294
 295         unit = device_get_unit(kdev);
 296         dev = device_get_softc(kdev);
 297
 298         if (!strcmp(device_get_name(kdev), "drmsub"))
 299                 dev->dev = device_get_parent(kdev);
 300         else
 301                 dev->dev = kdev;
 302
 303         dev->pci_domain = pci_get_domain(dev->dev);
 304         dev->pci_bus = pci_get_bus(dev->dev);
 305         dev->pci_slot = pci_get_slot(dev->dev);
 306         dev->pci_func = pci_get_function(dev->dev);
 307
 308         dev->pci_vendor = pci_get_vendor(dev->dev);
 309         dev->pci_device = pci_get_device(dev->dev);
 310         dev->pci_subvendor = pci_get_subvendor(dev->dev);
 311         dev->pci_subdevice = pci_get_subdevice(dev->dev);
 312
 313         id_entry = drm_find_description(dev->pci_vendor,
 314             dev->pci_device, idlist);
 315         dev->id_entry = id_entry;
 316
 317         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
 318                 msi_enable = drm_msi;
 319
 320                 if (drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) {
 321                         msi_enable = 0;
 322                 }
 323
 324                 dev->irq_type = pci_alloc_1intr(dev->dev, msi_enable,
 325                     &dev->irqrid, &irq_flags);
 326
 327                 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ,
 328                     &dev->irqrid, irq_flags);
 329
 330                 if (!dev->irqr) {
 331                         return (ENOENT);
 332                 }
 333
 334                 dev->irq = (int) rman_get_start(dev->irqr);
 335         }
 336
 337         lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE);
 338         lwkt_serialize_init(&dev->irq_lock);
 339         lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE);
 340         lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE);
 341
 342         error = drm_load(dev);
 343         if (error)
 344                 goto error;
 345
 346         error = drm_create_cdevs(kdev);
 347         if (error)
 348                 goto error;
 349
 350         return (error);
 351 error:
 352         if (dev->irqr) {
 353                 bus_release_resource(dev->dev, SYS_RES_IRQ,
 354                     dev->irqrid, dev->irqr);
 355         }
 356         if (dev->irq_type == PCI_INTR_TYPE_MSI) {
 357                 pci_release_msi(dev->dev);
 358         }
 359         return (error);
 360 }
 361
 362 int
 363 drm_create_cdevs(device_t kdev)
 364 {
 365         struct drm_device *dev;
 366         int error, unit;
 367
 368         unit = device_get_unit(kdev);
 369         dev = device_get_softc(kdev);
 370
 371         dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID,
 372                                 DRM_DEV_MODE, "dri/card%d", unit);
 373         error = 0;
 374         if (error == 0)
 375                 dev->devnode->si_drv1 = dev;
 376         return (error);
 377 }
 378
 379 #ifndef DRM_DEV_NAME
 380 #define DRM_DEV_NAME "drm"
 381 #endif
 382
 383 devclass_t drm_devclass;
 384
 385 drm_pci_id_list_t *drm_find_description(int vendor, int device,
 386     drm_pci_id_list_t *idlist)
 387 {
 388         int i = 0;
 389
 390         for (i = 0; idlist[i].vendor != 0; i++) {
 391                 if ((idlist[i].vendor == vendor) &&
 392                     ((idlist[i].device == device) ||
 393                     (idlist[i].device == 0))) {
 394                         return &idlist[i];
 395                 }
 396         }
 397         return NULL;
 398 }
 399
 400 /**
 401  * Take down the DRM device.
 402  *
 403  * \param dev DRM device structure.
 404  *
 405  * Frees every resource in \p dev.
 406  *
 407  * \sa drm_device
 408  */
 409 int drm_lastclose(struct drm_device * dev)
 410 {
 411         drm_magic_entry_t *pt, *next;
 412
 413         DRM_DEBUG("\n");
 414
 415         if (dev->driver->lastclose != NULL)
 416                 dev->driver->lastclose(dev);
 417
 418         if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled)
 419                 drm_irq_uninstall(dev);
 420
 421         DRM_LOCK(dev);
 422         if (dev->unique) {
 423                 drm_free(dev->unique, M_DRM);
 424                 dev->unique = NULL;
 425                 dev->unique_len = 0;
 426         }
 427
 428         /* Clear pid list */
 429         if (dev->magicfree.next) {
 430                 list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
 431                         list_del(&pt->head);
 432                         drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
 433                         kfree(pt);
 434                 }
 435                 drm_ht_remove(&dev->magiclist);
 436         }
 437
 438         /* Clear AGP information */
 439         if (dev->agp) {
 440                 drm_agp_mem_t *entry;
 441                 drm_agp_mem_t *nexte;
 442
 443                 /* Remove AGP resources, but leave dev->agp intact until
 444                  * drm_unload is called.
 445                  */
 446                 for (entry = dev->agp->memory; entry; entry = nexte) {
 447                         nexte = entry->next;
 448                         if (entry->bound)
 449                                 drm_agp_unbind_memory(entry->handle);
 450                         drm_agp_free_memory(entry->handle);
 451                         drm_free(entry, M_DRM);
 452                 }
 453                 dev->agp->memory = NULL;
 454
 455                 if (dev->agp->acquired)
 456                         drm_agp_release(dev);
 457
 458                 dev->agp->acquired = 0;
 459                 dev->agp->enabled  = 0;
 460         }
 461         if (dev->sg != NULL) {
 462                 drm_sg_cleanup(dev->sg);
 463                 dev->sg = NULL;
 464         }
 465
 466         drm_dma_takedown(dev);
 467         if (dev->lock.hw_lock) {
 468                 dev->lock.hw_lock = NULL; /* SHM removed */
 469                 dev->lock.file_priv = NULL;
 470                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
 471         }
 472         DRM_UNLOCK(dev);
 473
 474         return 0;
 475 }
 476
 477 static int drm_load(struct drm_device *dev)
 478 {
 479         int i, retcode;
 480
 481         DRM_DEBUG("\n");
 482
 483         INIT_LIST_HEAD(&dev->maplist);
 484
 485         drm_mem_init();
 486         drm_sysctl_init(dev);
 487         INIT_LIST_HEAD(&dev->filelist);
 488
 489         dev->counters  = 6;
 490         dev->types[0]  = _DRM_STAT_LOCK;
 491         dev->types[1]  = _DRM_STAT_OPENS;
 492         dev->types[2]  = _DRM_STAT_CLOSES;
 493         dev->types[3]  = _DRM_STAT_IOCTLS;
 494         dev->types[4]  = _DRM_STAT_LOCKS;
 495         dev->types[5]  = _DRM_STAT_UNLOCKS;
 496
 497         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
 498                 atomic_set(&dev->counts[i], 0);
 499
 500         INIT_LIST_HEAD(&dev->vblank_event_list);
 501
 502         if (drm_core_has_AGP(dev)) {
 503                 if (drm_device_is_agp(dev))
 504                         dev->agp = drm_agp_init();
 505                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
 506                     dev->agp == NULL) {
 507                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
 508                             "AGP.\n");
 509                         retcode = ENOMEM;
 510                         goto error;
 511                 }
 512                 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) {
 513                         if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base,
 514                             dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0)
 515                                 dev->agp->agp_mtrr = 1;
 516                 }
 517         }
 518
 519         retcode = drm_ctxbitmap_init(dev);
 520         if (retcode != 0) {
 521                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
 522                 goto error;
 523         }
 524
 525         if (dev->driver->driver_features & DRIVER_GEM) {
 526                 retcode = drm_gem_init(dev);
 527                 if (retcode != 0) {
 528                         DRM_ERROR("Cannot initialize graphics execution "
 529                                   "manager (GEM)\n");
 530                         goto error1;
 531                 }
 532         }
 533
 534         if (dev->driver->load != NULL) {
 535                 DRM_LOCK(dev);
 536                 /* Shared code returns -errno. */
 537                 retcode = -dev->driver->load(dev,
 538                     dev->id_entry->driver_private);
 539                 if (pci_enable_busmaster(dev->dev))
 540                         DRM_ERROR("Request to enable bus-master failed.\n");
 541                 DRM_UNLOCK(dev);
 542                 if (retcode != 0)
 543                         goto error1;
 544         }
 545
 546         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 547             dev->driver->name,
 548             dev->driver->major,
 549             dev->driver->minor,
 550             dev->driver->patchlevel,
 551             dev->driver->date);
 552
 553         return 0;
 554
 555 error1:
 556         drm_gem_destroy(dev);
 557 error:
 558         drm_ctxbitmap_cleanup(dev);
 559         drm_sysctl_cleanup(dev);
 560         DRM_LOCK(dev);
 561         drm_lastclose(dev);
 562         DRM_UNLOCK(dev);
 563         if (dev->devnode != NULL)
 564                 destroy_dev(dev->devnode);
 565
 566         lockuninit(&dev->vbl_lock);
 567         lockuninit(&dev->dev_lock);
 568         lockuninit(&dev->event_lock);
 569         lockuninit(&dev->struct_mutex);
 570
 571         return retcode;
 572 }
 573
 574 /**
 575  * Get version information
 576  *
 577  * \param inode device inode.
 578  * \param filp file pointer.
 579  * \param cmd command.
 580  * \param arg user argument, pointing to a drm_version structure.
 581  * \return zero on success or negative number on failure.
 582  *
 583  * Fills in the version information in \p arg.
 584  */
 585 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
 586 {
 587         struct drm_version *version = data;
 588         int len;
 589
 590 #define DRM_COPY( name, value )                                         \
 591         len = strlen( value );                                          \
 592         if ( len > name##_len ) len = name##_len;                       \
 593         name##_len = strlen( value );                                   \
 594         if ( len && name ) {                                            \
 595                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
 596                         return EFAULT;                          \
 597         }
 598
 599         version->version_major          = dev->driver->major;
 600         version->version_minor          = dev->driver->minor;
 601         version->version_patchlevel     = dev->driver->patchlevel;
 602
 603         DRM_COPY(version->name, dev->driver->name);
 604         DRM_COPY(version->date, dev->driver->date);
 605         DRM_COPY(version->desc, dev->driver->desc);
 606
 607         return 0;
 608 }
 609
 610 /*
 611  * Stub is needed for devfs
 612  */
 613 int drm_close(struct dev_close_args *ap)
 614 {
 615         return 0;
 616 }
 617
 618 void drm_cdevpriv_dtor(void *cd)
 619 {
 620         struct drm_file *file_priv = cd;
 621         struct drm_device *dev = file_priv->dev;
 622         int retcode = 0;
 623
 624         DRM_DEBUG("open_count = %d\n", dev->open_count);
 625
 626         DRM_LOCK(dev);
 627
 628         if (dev->driver->preclose != NULL)
 629                 dev->driver->preclose(dev, file_priv);
 630
 631         /* ========================================================
 632          * Begin inline drm_release
 633          */
 634
 635         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
 636             DRM_CURRENTPID, (long)dev->dev, dev->open_count);
 637
 638         if (dev->driver->driver_features & DRIVER_GEM)
 639                 drm_gem_release(dev, file_priv);
 640
 641         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
 642             && dev->lock.file_priv == file_priv) {
 643                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
 644                           DRM_CURRENTPID,
 645                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 646                 if (dev->driver->reclaim_buffers_locked != NULL)
 647                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 648
 649                 drm_lock_free(&dev->lock,
 650                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
 651
 652                                 /* FIXME: may require heavy-handed reset of
 653                                    hardware at this point, possibly
 654                                    processed via a callback to the X
 655                                    server. */
 656         } else if (dev->driver->reclaim_buffers_locked != NULL &&
 657             dev->lock.hw_lock != NULL) {
 658                 /* The lock is required to reclaim buffers */
 659                 for (;;) {
 660                         if (!dev->lock.hw_lock) {
 661                                 /* Device has been unregistered */
 662                                 retcode = EINTR;
 663                                 break;
 664                         }
 665                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
 666                                 dev->lock.file_priv = file_priv;
 667                                 dev->lock.lock_time = jiffies;
 668                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
 669                                 break;  /* Got lock */
 670                         }
 671                         /* Contention */
 672                         retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue,
 673                             PCATCH, "drmlk2", 0);
 674                         if (retcode)
 675                                 break;
 676                 }
 677                 if (retcode == 0) {
 678                         dev->driver->reclaim_buffers_locked(dev, file_priv);
 679                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
 680                 }
 681         }
 682
 683         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
 684             !dev->driver->reclaim_buffers_locked)
 685                 drm_reclaim_buffers(dev, file_priv);
 686
 687         funsetown(&dev->buf_sigio);
 688
 689         if (dev->driver->postclose != NULL)
 690                 dev->driver->postclose(dev, file_priv);
 691         list_del(&file_priv->lhead);
 692
 693
 694         /* ========================================================
 695          * End inline drm_release
 696          */
 697
 698         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
 699         device_unbusy(dev->dev);
 700         if (--dev->open_count == 0) {
 701                 retcode = drm_lastclose(dev);
 702         }
 703
 704         DRM_UNLOCK(dev);
 705 }
 706
 707 /**
 708  * Called whenever a process performs an ioctl on /dev/drm.
 709  *
 710  * \param inode device inode.
 711  * \param file_priv DRM file private.
 712  * \param cmd command.
 713  * \param arg user argument.
 714  * \return zero on success or negative number on failure.
 715  *
 716  * Looks up the ioctl function in the ::ioctls table, checking for root
 717  * previleges if so required, and dispatches to the respective function.
 718  */
 719 int drm_ioctl(struct dev_ioctl_args *ap)
 720 {
 721         struct cdev *kdev = ap->a_head.a_dev;
 722         struct drm_device *dev;
 723         struct drm_ioctl_desc *ioctl = NULL;
 724         u_long cmd = ap->a_cmd;
 725         unsigned int nr = DRM_IOCTL_NR(cmd);
 726         int retcode = 0;
 727         caddr_t data = ap->a_data;
 728         struct thread *p = curthread;
 729         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
 730         int is_driver_ioctl = 0;
 731         struct drm_file *file_priv;
 732
 733         dev = drm_get_device_from_kdev(kdev);
 734
 735         retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv);
 736         if (retcode !=0) {
 737                 DRM_ERROR("can't find authenticator\n");
 738                 return EINVAL;
 739         }
 740
 741         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
 742
 743         if (drm_device_is_unplugged(dev))
 744                 return -ENODEV;
 745
 746         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
 747                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
 748                 return EINVAL;
 749         }
 750
 751         ioctl = &drm_ioctls[nr];
 752         /* It's not a core DRM ioctl, try driver-specific. */
 753         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
 754                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
 755                 nr -= DRM_COMMAND_BASE;
 756                 if (nr >= dev->driver->num_ioctls) {
 757                         return EINVAL;
 758                 }
 759                 ioctl = &dev->driver->ioctls[nr];
 760                 is_driver_ioctl = 1;
 761         }
 762
 763         DRM_DEBUG_VERBOSE("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
 764             DRM_CURRENTPID, cmd, nr, (long)dev->dev,
 765             file_priv->authenticated);
 766
 767         /* Do not trust userspace, use our own definition */
 768         func = ioctl->func;
 769
 770         if (func == NULL) {
 771                 DRM_DEBUG("no function\n");
 772                 return EINVAL;
 773         }
 774
 775         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
 776             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
 777             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
 778                 return EACCES;
 779
 780         if (is_driver_ioctl) {
 781                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 782                         mutex_lock(&drm_global_mutex);
 783                 /* shared code returns -errno */
 784                 retcode = -func(dev, data, file_priv);
 785                 if ((ioctl->flags & DRM_UNLOCKED) == 0)
 786                         mutex_unlock(&drm_global_mutex);
 787         } else {
 788                 retcode = func(dev, data, file_priv);
 789         }
 790
 791         if (!ioctl)
 792                 DRM_DEBUG("invalid ioctl: pid=%d, dev=0x%lx, auth=%d, cmd=0x%02lx, nr=0x%02x\n",
 793                           DRM_CURRENTPID,
 794                           (long)dev->dev,
 795                           file_priv->authenticated, cmd, nr);
 796
 797         if (retcode)
 798                 DRM_DEBUG("ret = %d\n", retcode);
 799         return retcode;
 800 }
 801
 802 drm_local_map_t *drm_getsarea(struct drm_device *dev)
 803 {
 804         struct drm_map_list *entry;
 805
 806         list_for_each_entry(entry, &dev->maplist, head) {
 807                 if (entry->map && entry->map->type == _DRM_SHM &&
 808                     (entry->map->flags & _DRM_CONTAINS_LOCK)) {
 809                         return entry->map;
 810                 }
 811         }
 812
 813         return NULL;
 814 }
 815
 816 int
 817 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx,
 818     struct sysctl_oid *top)
 819 {
 820         struct sysctl_oid *oid;
 821
 822         ksnprintf(dev->busid_str, sizeof(dev->busid_str),
 823              "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus,
 824              dev->pci_slot, dev->pci_func);
 825         oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid",
 826             CTLFLAG_RD, dev->busid_str, 0, NULL);
 827         if (oid == NULL)
 828                 return (ENOMEM);
 829         dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0;
 830         oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO,
 831             "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL);
 832         if (oid == NULL)
 833                 return (ENOMEM);
 834
 835         return (0);
 836 }
 837
 838 int
 839 drm_mmap_single(struct dev_mmap_single_args *ap)
 840 {
 841         struct drm_device *dev;
 842         struct cdev *kdev = ap->a_head.a_dev;
 843         vm_ooffset_t *offset = ap->a_offset;
 844         vm_size_t size = ap->a_size;
 845         struct vm_object **obj_res = ap->a_object;
 846         int nprot = ap->a_nprot;
 847
 848         dev = drm_get_device_from_kdev(kdev);
 849         if (dev->drm_ttm_bdev != NULL) {
 850                 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size,
 851                     obj_res, nprot));
 852         } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) {
 853                 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot));
 854         } else {
 855                 return (ENODEV);
 856         }
 857 }
 858
 859 #if DRM_LINUX
 860
 861 #include <sys/sysproto.h>
 862
 863 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
 864
 865 #define LINUX_IOCTL_DRM_MIN             0x6400
 866 #define LINUX_IOCTL_DRM_MAX             0x64ff
 867
 868 static linux_ioctl_function_t drm_linux_ioctl;
 869 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
 870     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
 871
 872 /* The bits for in/out are switched on Linux */
 873 #define LINUX_IOC_IN    IOC_OUT
 874 #define LINUX_IOC_OUT   IOC_IN
 875
 876 static int
 877 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
 878 {
 879         int error;
 880         int cmd = args->cmd;
 881
 882         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
 883         if (cmd & LINUX_IOC_IN)
 884                 args->cmd |= IOC_IN;
 885         if (cmd & LINUX_IOC_OUT)
 886                 args->cmd |= IOC_OUT;
 887
 888         error = ioctl(p, (struct ioctl_args *)args);
 889
 890         return error;
 891 }
 892 #endif /* DRM_LINUX */
 893
 894 static int
 895 drm_core_init(void *arg)
 896 {
 897
 898         drm_global_init();
 899
 900 #if DRM_LINUX
 901         linux_ioctl_register_handler(&drm_handler);
 902 #endif /* DRM_LINUX */
 903
 904         DRM_INFO("Initialized %s %d.%d.%d %s\n",
 905                  CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
 906         return 0;
 907 }
 908
 909 static void
 910 drm_core_exit(void *arg)
 911 {
 912
 913 #if DRM_LINUX
 914         linux_ioctl_unregister_handler(&drm_handler);
 915 #endif /* DRM_LINUX */
 916
 917         drm_global_release();
 918 }
 919
 920 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
 921     drm_core_init, NULL);
 922 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
 923     drm_core_exit, NULL);
 924
 925 /*
 926  * Check if dmi_system_id structure matches system DMI data
 927  */
 928 static bool
 929 dmi_found(const struct dmi_system_id *dsi)
 930 {
 931         int i, slot;
 932         bool found = false;
 933         char *sys_vendor, *board_vendor, *product_name, *board_name;
 934
 935         sys_vendor = kgetenv("smbios.system.maker");
 936         board_vendor = kgetenv("smbios.planar.maker");
 937         product_name = kgetenv("smbios.system.product");
 938         board_name = kgetenv("smbios.planar.product");
 939
 940         for (i = 0; i < NELEM(dsi->matches); i++) {
 941                 slot = dsi->matches[i].slot;
 942                 switch (slot) {
 943                 case DMI_NONE:
 944                         break;
 945                 case DMI_SYS_VENDOR:
 946                         if (sys_vendor != NULL &&
 947                             !strcmp(sys_vendor, dsi->matches[i].substr))
 948                                 break;
 949                         else
 950                                 goto done;
 951                 case DMI_BOARD_VENDOR:
 952                         if (board_vendor != NULL &&
 953                             !strcmp(board_vendor, dsi->matches[i].substr))
 954                                 break;
 955                         else
 956                                 goto done;
 957                 case DMI_PRODUCT_NAME:
 958                         if (product_name != NULL &&
 959                             !strcmp(product_name, dsi->matches[i].substr))
 960                                 break;
 961                         else
 962                                 goto done;
 963                 case DMI_BOARD_NAME:
 964                         if (board_name != NULL &&
 965                             !strcmp(board_name, dsi->matches[i].substr))
 966                                 break;
 967                         else
 968                                 goto done;
 969                 default:
 970                         goto done;
 971                 }
 972         }
 973         found = true;
 974
 975 done:
 976         if (sys_vendor != NULL)
 977                 kfreeenv(sys_vendor);
 978         if (board_vendor != NULL)
 979                 kfreeenv(board_vendor);
 980         if (product_name != NULL)
 981                 kfreeenv(product_name);
 982         if (board_name != NULL)
 983                 kfreeenv(board_name);
 984
 985         return found;
 986 }
 987
 988 bool
 989 dmi_check_system(const struct dmi_system_id *sysid)
 990 {
 991         const struct dmi_system_id *dsi;
 992         int num = 0;
 993
 994         for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) {
 995                 if (dmi_found(dsi)) {
 996                         num++;
 997                         if (dsi->callback && dsi->callback(dsi))
 998                                 break;
 999                 }
1000         }
1001         return (num);
1002 }