/** * \file drm_drv.c * Generic driver template * * \author Rickard E. (Rik) Faith * \author Gareth Hughes * * To use this template, you must at least define the following (samples * given for the MGA driver): * * \code * #define DRIVER_AUTHOR "VA Linux Systems, Inc." * * #define DRIVER_NAME "mga" * #define DRIVER_DESC "Matrox G200/G400" * #define DRIVER_DATE "20001127" * * #define drm_x mga_##x * \endcode */ /* * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com * * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include #include #include #include #if DRM_DEBUG_DEFAULT_ON == 1 #define DRM_DEBUGBITS_ON (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | \ DRM_DEBUGBITS_FAILED_IOCTL) #elif DRM_DEBUG_DEFAULT_ON == 2 #define DRM_DEBUGBITS_ON (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | \ DRM_DEBUGBITS_FAILED_IOCTL | DRM_DEBUGBITS_VERBOSE) #else #define DRM_DEBUGBITS_ON (0x0) #endif int drm_debug = DRM_DEBUGBITS_ON; int drm_notyet_flag = 0; unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ static int drm_load(struct drm_device *dev); drm_pci_id_list_t *drm_find_description(int vendor, int device, drm_pci_id_list_t *idlist); #define DRIVER_SOFTC(unit) \ ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) static int drm_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: TUNABLE_INT_FETCH("drm.debug", &drm_debug); TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag); break; } return (0); } static moduledata_t drm_mod = { "drm", drm_modevent, 0 }; DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); MODULE_VERSION(drm, 1); MODULE_DEPEND(drm, agp, 1, 1, 1); MODULE_DEPEND(drm, pci, 1, 1, 1); MODULE_DEPEND(drm, iicbus, 1, 1, 1); #define DRM_IOCTL_DEF(ioctl, func, flags) \ [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags} /** Ioctl table */ static struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED), #if 0 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED), #endif DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), }; #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) static struct dev_ops drm_cdevsw = { { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, .d_open = drm_open, .d_close = drm_close, .d_read = drm_read, .d_ioctl = drm_ioctl, .d_kqfilter = drm_kqfilter, .d_mmap = drm_mmap, .d_mmap_single = drm_mmap_single, }; static int drm_msi = 1; /* Enable by default. */ TUNABLE_INT("hw.drm.msi", &drm_msi); SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1, "Enable MSI interrupts for drm devices"); static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { {0x8086, 0x2772}, /* Intel i945G */ \ {0x8086, 0x27A2}, /* Intel i945GM */ \ {0x8086, 0x27AE}, /* Intel i945GME */ \ {0, 0} }; static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) { int i = 0; if (dev->driver->use_msi != NULL) { int use_msi; use_msi = dev->driver->use_msi(dev, flags); return (!use_msi); } /* TODO: Maybe move this to a callback in i915? */ for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && (drm_msi_blacklist[i].device == dev->pci_device)) { return 1; } } return 0; } int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) { drm_pci_id_list_t *id_entry; int vendor, device; vendor = pci_get_vendor(kdev); device = pci_get_device(kdev); if (pci_get_class(kdev) != PCIC_DISPLAY) return ENXIO; id_entry = drm_find_description(vendor, device, idlist); if (id_entry != NULL) { if (!device_get_desc(kdev)) { DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); device_set_desc(kdev, id_entry->name); } return 0; } return ENXIO; } int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) { struct drm_device *dev; drm_pci_id_list_t *id_entry; int unit, error, msicount; int rid = 0; unit = device_get_unit(kdev); dev = device_get_softc(kdev); if (!strcmp(device_get_name(kdev), "drmsub")) dev->dev = device_get_parent(kdev); else dev->dev = kdev; dev->pci_domain = pci_get_domain(dev->dev); dev->pci_bus = pci_get_bus(dev->dev); dev->pci_slot = pci_get_slot(dev->dev); dev->pci_func = pci_get_function(dev->dev); dev->pci_vendor = pci_get_vendor(dev->dev); dev->pci_device = pci_get_device(dev->dev); dev->pci_subvendor = pci_get_subvendor(dev->dev); dev->pci_subdevice = pci_get_subdevice(dev->dev); id_entry = drm_find_description(dev->pci_vendor, dev->pci_device, idlist); dev->id_entry = id_entry; if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { if (drm_msi && !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { msicount = pci_msi_count(dev->dev); DRM_DEBUG("MSI count = %d\n", msicount); if (msicount > 1) msicount = 1; if (pci_alloc_msi(dev->dev, &rid, msicount, -1) == 0) { DRM_INFO("MSI enabled %d message(s)\n", msicount); dev->msi_enabled = 1; dev->irqrid = rid; } } dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ, &dev->irqrid, RF_SHAREABLE); if (!dev->irqr) { return (ENOENT); } dev->irq = (int) rman_get_start(dev->irqr); } lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); lwkt_serialize_init(&dev->irq_lock); lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); error = drm_load(dev); if (error) goto error; error = drm_create_cdevs(kdev); if (error) goto error; return (error); error: if (dev->irqr) { bus_release_resource(dev->dev, SYS_RES_IRQ, dev->irqrid, dev->irqr); } if (dev->msi_enabled) { pci_release_msi(dev->dev); } return (error); } int drm_create_cdevs(device_t kdev) { struct drm_device *dev; int error, unit; unit = device_get_unit(kdev); dev = device_get_softc(kdev); dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, DRM_DEV_MODE, "dri/card%d", unit); error = 0; if (error == 0) dev->devnode->si_drv1 = dev; return (error); } #ifndef DRM_DEV_NAME #define DRM_DEV_NAME "drm" #endif devclass_t drm_devclass; drm_pci_id_list_t *drm_find_description(int vendor, int device, drm_pci_id_list_t *idlist) { int i = 0; for (i = 0; idlist[i].vendor != 0; i++) { if ((idlist[i].vendor == vendor) && ((idlist[i].device == device) || (idlist[i].device == 0))) { return &idlist[i]; } } return NULL; } /** * Take down the DRM device. * * \param dev DRM device structure. * * Frees every resource in \p dev. * * \sa drm_device */ int drm_lastclose(struct drm_device * dev) { drm_magic_entry_t *pt, *next; DRM_DEBUG("\n"); if (dev->driver->lastclose != NULL) dev->driver->lastclose(dev); if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) drm_irq_uninstall(dev); DRM_LOCK(dev); if (dev->unique) { drm_free(dev->unique, M_DRM); dev->unique = NULL; dev->unique_len = 0; } /* Clear pid list */ if (dev->magicfree.next) { list_for_each_entry_safe(pt, next, &dev->magicfree, head) { list_del(&pt->head); drm_ht_remove_item(&dev->magiclist, &pt->hash_item); kfree(pt); } drm_ht_remove(&dev->magiclist); } /* Clear AGP information */ if (dev->agp) { drm_agp_mem_t *entry; drm_agp_mem_t *nexte; /* Remove AGP resources, but leave dev->agp intact until * drm_unload is called. */ for (entry = dev->agp->memory; entry; entry = nexte) { nexte = entry->next; if (entry->bound) drm_agp_unbind_memory(entry->handle); drm_agp_free_memory(entry->handle); drm_free(entry, M_DRM); } dev->agp->memory = NULL; if (dev->agp->acquired) drm_agp_release(dev); dev->agp->acquired = 0; dev->agp->enabled = 0; } if (dev->sg != NULL) { drm_sg_cleanup(dev->sg); dev->sg = NULL; } drm_dma_takedown(dev); if (dev->lock.hw_lock) { dev->lock.hw_lock = NULL; /* SHM removed */ dev->lock.file_priv = NULL; DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); } DRM_UNLOCK(dev); return 0; } static int drm_load(struct drm_device *dev) { int i, retcode; DRM_DEBUG("\n"); INIT_LIST_HEAD(&dev->maplist); drm_mem_init(); drm_sysctl_init(dev); INIT_LIST_HEAD(&dev->filelist); dev->counters = 6; dev->types[0] = _DRM_STAT_LOCK; dev->types[1] = _DRM_STAT_OPENS; dev->types[2] = _DRM_STAT_CLOSES; dev->types[3] = _DRM_STAT_IOCTLS; dev->types[4] = _DRM_STAT_LOCKS; dev->types[5] = _DRM_STAT_UNLOCKS; for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) atomic_set(&dev->counts[i], 0); INIT_LIST_HEAD(&dev->vblank_event_list); if (drm_core_has_AGP(dev)) { if (drm_device_is_agp(dev)) dev->agp = drm_agp_init(); if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && dev->agp == NULL) { DRM_ERROR("Card isn't AGP, or couldn't initialize " "AGP.\n"); retcode = ENOMEM; goto error; } if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) { if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base, dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0) dev->agp->agp_mtrr = 1; } } retcode = drm_ctxbitmap_init(dev); if (retcode != 0) { DRM_ERROR("Cannot allocate memory for context bitmap.\n"); goto error; } if (dev->driver->driver_features & DRIVER_GEM) { retcode = drm_gem_init(dev); if (retcode != 0) { DRM_ERROR("Cannot initialize graphics execution " "manager (GEM)\n"); goto error1; } } if (dev->driver->load != NULL) { DRM_LOCK(dev); /* Shared code returns -errno. */ retcode = -dev->driver->load(dev, dev->id_entry->driver_private); if (pci_enable_busmaster(dev->dev)) DRM_ERROR("Request to enable bus-master failed.\n"); DRM_UNLOCK(dev); if (retcode != 0) goto error1; } DRM_INFO("Initialized %s %d.%d.%d %s\n", dev->driver->name, dev->driver->major, dev->driver->minor, dev->driver->patchlevel, dev->driver->date); return 0; error1: drm_gem_destroy(dev); error: drm_ctxbitmap_cleanup(dev); drm_sysctl_cleanup(dev); DRM_LOCK(dev); drm_lastclose(dev); DRM_UNLOCK(dev); if (dev->devnode != NULL) destroy_dev(dev->devnode); lockuninit(&dev->vbl_lock); lockuninit(&dev->dev_lock); lockuninit(&dev->event_lock); lockuninit(&dev->struct_mutex); return retcode; } /** * Get version information * * \param inode device inode. * \param filp file pointer. * \param cmd command. * \param arg user argument, pointing to a drm_version structure. * \return zero on success or negative number on failure. * * Fills in the version information in \p arg. */ int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_version *version = data; int len; #define DRM_COPY( name, value ) \ len = strlen( value ); \ if ( len > name##_len ) len = name##_len; \ name##_len = strlen( value ); \ if ( len && name ) { \ if ( DRM_COPY_TO_USER( name, value, len ) ) \ return EFAULT; \ } version->version_major = dev->driver->major; version->version_minor = dev->driver->minor; version->version_patchlevel = dev->driver->patchlevel; DRM_COPY(version->name, dev->driver->name); DRM_COPY(version->date, dev->driver->date); DRM_COPY(version->desc, dev->driver->desc); return 0; } /* * Stub is needed for devfs */ int drm_close(struct dev_close_args *ap) { return 0; } void drm_cdevpriv_dtor(void *cd) { struct drm_file *file_priv = cd; struct drm_device *dev = file_priv->dev; int retcode = 0; DRM_DEBUG("open_count = %d\n", dev->open_count); DRM_LOCK(dev); if (dev->driver->preclose != NULL) dev->driver->preclose(dev, file_priv); /* ======================================================== * Begin inline drm_release */ DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", DRM_CURRENTPID, (long)dev->dev, dev->open_count); if (dev->driver->driver_features & DRIVER_GEM) drm_gem_release(dev, file_priv); if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) && dev->lock.file_priv == file_priv) { DRM_DEBUG("Process %d dead, freeing lock for context %d\n", DRM_CURRENTPID, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); if (dev->driver->reclaim_buffers_locked != NULL) dev->driver->reclaim_buffers_locked(dev, file_priv); drm_lock_free(&dev->lock, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); /* FIXME: may require heavy-handed reset of hardware at this point, possibly processed via a callback to the X server. */ } else if (dev->driver->reclaim_buffers_locked != NULL && dev->lock.hw_lock != NULL) { /* The lock is required to reclaim buffers */ for (;;) { if (!dev->lock.hw_lock) { /* Device has been unregistered */ retcode = EINTR; break; } if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { dev->lock.file_priv = file_priv; dev->lock.lock_time = jiffies; atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); break; /* Got lock */ } /* Contention */ retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, PCATCH, "drmlk2", 0); if (retcode) break; } if (retcode == 0) { dev->driver->reclaim_buffers_locked(dev, file_priv); drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); } } if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && !dev->driver->reclaim_buffers_locked) drm_reclaim_buffers(dev, file_priv); funsetown(&dev->buf_sigio); if (dev->driver->postclose != NULL) dev->driver->postclose(dev, file_priv); list_del(&file_priv->lhead); /* ======================================================== * End inline drm_release */ atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); device_unbusy(dev->dev); if (--dev->open_count == 0) { retcode = drm_lastclose(dev); } DRM_UNLOCK(dev); } /** * Called whenever a process performs an ioctl on /dev/drm. * * \param inode device inode. * \param file_priv DRM file private. * \param cmd command. * \param arg user argument. * \return zero on success or negative number on failure. * * Looks up the ioctl function in the ::ioctls table, checking for root * previleges if so required, and dispatches to the respective function. */ int drm_ioctl(struct dev_ioctl_args *ap) { struct cdev *kdev = ap->a_head.a_dev; struct drm_device *dev; struct drm_ioctl_desc *ioctl = NULL; u_long cmd = ap->a_cmd; unsigned int nr = DRM_IOCTL_NR(cmd); int retcode = 0; caddr_t data = ap->a_data; struct thread *p = curthread; int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); int is_driver_ioctl = 0; struct drm_file *file_priv; dev = drm_get_device_from_kdev(kdev); retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv); if (retcode !=0) { DRM_ERROR("can't find authenticator\n"); return EINVAL; } atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); if (drm_device_is_unplugged(dev)) return -ENODEV; if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); return EINVAL; } ioctl = &drm_ioctls[nr]; /* It's not a core DRM ioctl, try driver-specific. */ if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ nr -= DRM_COMMAND_BASE; if (nr > dev->driver->num_ioctls) { return EINVAL; } ioctl = &dev->driver->ioctls[nr]; is_driver_ioctl = 1; } DRM_DEBUG_VERBOSE("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", DRM_CURRENTPID, cmd, nr, (long)dev->dev, file_priv->authenticated); /* Do not trust userspace, use our own definition */ func = ioctl->func; if (func == NULL) { DRM_DEBUG("no function\n"); return EINVAL; } if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || ((ioctl->flags & DRM_MASTER) && !file_priv->master)) return EACCES; if (is_driver_ioctl) { if ((ioctl->flags & DRM_UNLOCKED) == 0) mutex_lock(&drm_global_mutex); /* shared code returns -errno */ retcode = -func(dev, data, file_priv); if ((ioctl->flags & DRM_UNLOCKED) == 0) mutex_unlock(&drm_global_mutex); } else { retcode = func(dev, data, file_priv); } if (!ioctl) DRM_DEBUG("invalid ioctl: pid=%d, dev=0x%lx, auth=%d, cmd=0x%02lx, nr=0x%02x\n", DRM_CURRENTPID, (long)dev->dev, file_priv->authenticated, cmd, nr); if (retcode) DRM_DEBUG("ret = %d\n", retcode); return retcode; } drm_local_map_t *drm_getsarea(struct drm_device *dev) { struct drm_map_list *entry; list_for_each_entry(entry, &dev->maplist, head) { if (entry->map && entry->map->type == _DRM_SHM && (entry->map->flags & _DRM_CONTAINS_LOCK)) { return entry->map; } } return NULL; } int drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, struct sysctl_oid *top) { struct sysctl_oid *oid; ksnprintf(dev->busid_str, sizeof(dev->busid_str), "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func); oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", CTLFLAG_RD, dev->busid_str, 0, NULL); if (oid == NULL) return (ENOMEM); dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); if (oid == NULL) return (ENOMEM); return (0); } int drm_mmap_single(struct dev_mmap_single_args *ap) { struct drm_device *dev; struct cdev *kdev = ap->a_head.a_dev; vm_ooffset_t *offset = ap->a_offset; vm_size_t size = ap->a_size; struct vm_object **obj_res = ap->a_object; int nprot = ap->a_nprot; dev = drm_get_device_from_kdev(kdev); if (dev->drm_ttm_bdev != NULL) { return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, obj_res, nprot)); } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); } else { return (ENODEV); } } #if DRM_LINUX #include MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); #define LINUX_IOCTL_DRM_MIN 0x6400 #define LINUX_IOCTL_DRM_MAX 0x64ff static linux_ioctl_function_t drm_linux_ioctl; static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; /* The bits for in/out are switched on Linux */ #define LINUX_IOC_IN IOC_OUT #define LINUX_IOC_OUT IOC_IN static int drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) { int error; int cmd = args->cmd; args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); if (cmd & LINUX_IOC_IN) args->cmd |= IOC_IN; if (cmd & LINUX_IOC_OUT) args->cmd |= IOC_OUT; error = ioctl(p, (struct ioctl_args *)args); return error; } #endif /* DRM_LINUX */ static int drm_core_init(void *arg) { drm_global_init(); #if DRM_LINUX linux_ioctl_register_handler(&drm_handler); #endif /* DRM_LINUX */ DRM_INFO("Initialized %s %d.%d.%d %s\n", CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); return 0; } static void drm_core_exit(void *arg) { #if DRM_LINUX linux_ioctl_unregister_handler(&drm_handler); #endif /* DRM_LINUX */ drm_global_release(); } SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, drm_core_init, NULL); SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, drm_core_exit, NULL); /* * Check if dmi_system_id structure matches system DMI data */ static bool dmi_found(const struct dmi_system_id *dsi) { int i, slot; bool found = false; char *sys_vendor, *board_vendor, *product_name, *board_name; sys_vendor = kgetenv("smbios.system.maker"); board_vendor = kgetenv("smbios.planar.maker"); product_name = kgetenv("smbios.system.product"); board_name = kgetenv("smbios.planar.product"); for (i = 0; i < NELEM(dsi->matches); i++) { slot = dsi->matches[i].slot; switch (slot) { case DMI_NONE: break; case DMI_SYS_VENDOR: if (sys_vendor != NULL && !strcmp(sys_vendor, dsi->matches[i].substr)) break; else goto done; case DMI_BOARD_VENDOR: if (board_vendor != NULL && !strcmp(board_vendor, dsi->matches[i].substr)) break; else goto done; case DMI_PRODUCT_NAME: if (product_name != NULL && !strcmp(product_name, dsi->matches[i].substr)) break; else goto done; case DMI_BOARD_NAME: if (board_name != NULL && !strcmp(board_name, dsi->matches[i].substr)) break; else goto done; default: goto done; } } found = true; done: if (sys_vendor != NULL) kfreeenv(sys_vendor); if (board_vendor != NULL) kfreeenv(board_vendor); if (product_name != NULL) kfreeenv(product_name); if (board_name != NULL) kfreeenv(board_name); return found; } bool dmi_check_system(const struct dmi_system_id *sysid) { const struct dmi_system_id *dsi; int num = 0; for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { if (dmi_found(dsi)) { num++; if (dsi->callback && dsi->callback(dsi)) break; } } return (num); }