/* * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved. */ /* * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. */ /** * \file drm_stub.h * Stub support * * \author Rickard E. (Rik) Faith */ /* * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org * * Copyright 2001 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 * PRECISION INSIGHT 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 "drmP.h" #include "drm_core.h" #include "drm_linux_list.h" unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ struct idr drm_minors_idr; static int drm_minor_get_id(struct drm_device *dev, int type) { int new_id; int ret; int base, limit; switch (type) { case DRM_MINOR_LEGACY: base = DRM_MINOR_ID_BASE_LEGACY; limit = DRM_MINOR_ID_LIMIT_LEGACY; break; case DRM_MINOR_CONTROL: base = DRM_MINOR_ID_BASE_CONTROL; limit = DRM_MINOR_ID_LIMIT_CONTROL; break; case DRM_MINOR_RENDER: base = DRM_MINOR_ID_BASE_RENDER; limit = DRM_MINOR_ID_LIMIT_RENDER; break; case DRM_MINOR_VGATEXT: base = DRM_MINOR_ID_BASE_VGATEXT; limit = DRM_MINOR_ID_LIMIT_VGATEXT; break; case DRM_MINOR_AGPMASTER: base = DRM_MINOR_ID_BASE_AGPMASTER; limit = DRM_MINOR_ID_LIMIT_AGPMASTER; break; default: return -EINVAL; } mutex_lock(&dev->struct_mutex); ret = idr_get_new_above(&drm_minors_idr, NULL, base, &new_id); mutex_unlock(&dev->struct_mutex); if (ret) { return ret; } if (new_id > limit) { (void) idr_remove(&drm_minors_idr, new_id); return -EINVAL; } return new_id; } struct drm_master *drm_master_create(struct drm_minor *minor) { struct drm_master *master; int i; master = kzalloc(sizeof(*master), GFP_KERNEL); if (!master) return NULL; kref_init(&master->refcount); mutex_init(&master->lock.lock_mutex, NULL, MUTEX_DRIVER, (void *)minor->dev->pdev->intr_block); cv_init(&master->lock.lock_cv, NULL, CV_DRIVER, NULL); for (i = 0; i < DRM_HASH_SIZE; i++) { master->magiclist[i].head = NULL; master->magiclist[i].tail = NULL; } master->minor = minor; list_add_tail(&master->head, &minor->master_list, (caddr_t)master); return master; } struct drm_master *drm_master_get(struct drm_master *master) { kref_get(&master->refcount); return master; } void drm_master_destroy(struct kref *kref) { struct drm_master *master = container_of(kref, struct drm_master, refcount); struct drm_magic_entry *pt, *next; struct drm_device *dev = master->minor->dev; struct drm_map_list *r_list, *list_temp; int i; list_del(&master->head); if (dev->driver->master_destroy) dev->driver->master_destroy(dev, master); list_for_each_entry_safe(r_list, list_temp, struct drm_map_list, &dev->maplist, head) { if (r_list->master == master) { (void) drm_rmmap_locked(dev, r_list->map); r_list = NULL; } } if (master->unique) { kfree(master->unique, master->unique_size); master->unique = NULL; master->unique_len = 0; } for (i = 0; i < DRM_HASH_SIZE; i++) { for (pt = master->magiclist[i].head; pt; pt = next) { next = pt->next; drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC); } master->magiclist[i].head = master->magiclist[i].tail = NULL; } cv_destroy(&master->lock.lock_cv); mutex_destroy(&master->lock.lock_mutex); kfree(master, sizeof (struct drm_master)); } void drm_master_put(struct drm_master **master) { kref_put(&(*master)->refcount, drm_master_destroy); *master = NULL; } /* LINTED */ int drm_setmaster_ioctl(DRM_IOCTL_ARGS) { int ret = 0; if (dev->driver->entervt) dev->driver->entervt(dev); if (file->is_master) return 0; if (file->minor->master && file->minor->master != file->master) return -EINVAL; if (!file->master) return -EINVAL; if (!file->minor->master && file->minor->master != file->master) { mutex_lock(&dev->struct_mutex); file->minor->master = drm_master_get(file->master); file->is_master = 1; if (dev->driver->master_set) { ret = dev->driver->master_set(dev, file, false); if (unlikely(ret != 0)) { file->is_master = 0; drm_master_put(&file->minor->master); } } mutex_unlock(&dev->struct_mutex); } return 0; } /* LINTED */ int drm_dropmaster_ioctl(DRM_IOCTL_ARGS) { if (!file->is_master) return -EINVAL; if (!file->minor->master) return -EINVAL; if (dev->driver->leavevt) dev->driver->leavevt(dev); mutex_lock(&dev->struct_mutex); if (dev->driver->master_drop) dev->driver->master_drop(dev, file, false); drm_master_put(&file->minor->master); file->is_master = 0; mutex_unlock(&dev->struct_mutex); return 0; } static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev, struct drm_driver *driver) { int retcode; INIT_LIST_HEAD(&dev->filelist); INIT_LIST_HEAD(&dev->ctxlist); INIT_LIST_HEAD(&dev->maplist); INIT_LIST_HEAD(&dev->vblank_event_list); INIT_LIST_HEAD(&dev->gem_objects_list); mutex_init(&dev->count_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block); mutex_init(&dev->event_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block); mutex_init(&dev->struct_mutex, NULL, MUTEX_DRIVER, NULL); //adaptive locks mutex_init(&dev->ctxlist_mutex, NULL, MUTEX_DRIVER, NULL); mutex_init(&dev->irq_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block); mutex_init(&dev->track_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block); mutex_init(&dev->page_fault_lock, NULL, MUTEX_DRIVER, NULL); dev->pdev = pdev; dev->pci_device = pdev->device; dev->pci_vendor = pdev->vendor; idr_init(&dev->map_idr); /* the DRM has 6 basic counters */ 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; dev->driver = driver; retcode = drm_ctxbitmap_init(dev); if (retcode) { DRM_ERROR("Cannot allocate memory for context bitmap.\n"); goto error_out_unreg; } if (driver->driver_features & DRIVER_GEM) { retcode = drm_gem_init(dev); if (retcode) { DRM_ERROR("Cannot initialize graphics execution " "manager (GEM)\n"); goto error_out_unreg; } } dev->drm_wq = create_workqueue(dev->devinfo, "drm"); if (dev->drm_wq == NULL) { DRM_ERROR("Failed to create drm workqueue.\n"); goto error_out_unreg; } return 0; error_out_unreg: (void)drm_lastclose(dev); return retcode; } /** * Get a secondary minor number. * * \param dev device data structure * \param sec-minor structure to hold the assigned minor * \return negative number on failure. * * Search an empty entry and initialize it to the given parameters, and * create the proc init entry via proc_init(). This routines assigns * minor numbers to secondary heads of multi-headed cards */ static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) { struct drm_minor *new_minor; int ret; int minor_id; int minor_unit; DRM_DEBUG("\n"); minor_id = drm_minor_get_id(dev, type); if (minor_id < 0) return minor_id; new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL); if (!new_minor) { ret = -ENOMEM; goto err_idr; } new_minor->type = type; new_minor->dev = dev; new_minor->index = minor_id; INIT_LIST_HEAD(&new_minor->master_list); (void) idr_replace(&drm_minors_idr, new_minor, minor_id); minor_unit = minor_id & DRM_MINOR_ID_LIMIT_LEGACY; /* 63 */ if (type == DRM_MINOR_LEGACY) (void) sprintf(new_minor->name, "drm%d", minor_unit); else if (type == DRM_MINOR_CONTROL) (void) sprintf(new_minor->name, "controlD%d", minor_unit); else if (type == DRM_MINOR_RENDER) (void) sprintf(new_minor->name, "renderD%d", minor_unit); else if (type == DRM_MINOR_VGATEXT) (void) sprintf(new_minor->name, "gfx%d", minor_unit); else if (type == DRM_MINOR_AGPMASTER) (void) sprintf(new_minor->name, "agpmaster%d", minor_unit); idr_init(&new_minor->clone_idr); ret = drm_sysfs_device_add(new_minor); if (ret) goto err_g2; *minor = new_minor; DRM_DEBUG("new minor assigned %d\n", minor_id); return 0; err_g2: kfree(new_minor, sizeof (*new_minor)); err_idr: (void) idr_remove(&drm_minors_idr, minor_id); *minor = NULL; return ret; } /** * Register. * * \return zero on success or a negative number on failure. * * Attempt to gets inter module "drm" information. If we are first * then register the character device and inter module information. * Try and register, if we fail to register, backout previous work. */ int drm_get_dev(struct drm_device *dev, struct pci_dev *pdev, struct drm_driver *driver, unsigned long driver_data) { int ret; DRM_DEBUG("\n"); if ((ret = drm_fill_in_dev(dev, pdev, driver))) { DRM_ERROR("DRM: Fill_in_dev failed"); goto err_g1; } if ((ret = drm_get_minor(dev, &dev->vgatext, DRM_MINOR_VGATEXT))) { goto err_g2; } if (dev->driver->agp_support_detect) dev->driver->agp_support_detect(dev, driver_data); if (drm_core_has_AGP(dev)) { if ((ret = drm_get_minor(dev, &dev->agpmaster, DRM_MINOR_AGPMASTER))) goto err_g1; } if (drm_core_check_feature(dev, DRIVER_MODESET)) { ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL); if (ret) goto err_g3; } if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY))) goto err_g4; if (dev->driver->load) { ret = dev->driver->load(dev, driver_data); if (ret) goto err_g5; } if (drm_init_kstats(dev)) { DRM_ERROR("init kstats error"); ret = EFAULT; goto err_g5; } cmn_err(CE_CONT, "!Initialized %s v%d.%d.%d Modified date %s", driver->name, driver->major, driver->minor, driver->patchlevel, driver->date); return 0; err_g5: (void) drm_put_minor(&dev->primary); err_g4: if (drm_core_check_feature(dev, DRIVER_MODESET)) (void) drm_put_minor(&dev->control); err_g3: (void) drm_put_minor(&dev->vgatext); err_g2: if (drm_core_has_AGP(dev)) (void) drm_put_minor(&dev->agpmaster); err_g1: return ret; } /** * Put a secondary minor number. * * \param sec_minor - structure to be released * \return always zero * * Cleans up the proc resources. Not legal for this to be the * last minor released. * */ int drm_put_minor(struct drm_minor **minor_p) { struct drm_minor *minor = *minor_p; DRM_DEBUG("release secondary minor %d\n", minor->index); drm_sysfs_device_remove(minor); (void) idr_remove(&drm_minors_idr, minor->index); idr_destroy(&minor->clone_idr); kfree(minor, sizeof (*minor)); *minor_p = NULL; return 0; } /** * Called via drm_exit() at module unload time or when pci device is * unplugged. * * Cleans up all DRM device, calling drm_lastclose(). * * \sa drm_init */ void drm_put_dev(struct drm_device *dev) { struct drm_driver *driver; struct drm_map_list *r_list, *list_temp; DRM_DEBUG("\n"); if (!dev) { DRM_ERROR("cleanup called no dev\n"); return; } driver = dev->driver; (void) drm_lastclose(dev); (void) destroy_workqueue(dev->drm_wq); if (dev->driver->unload) dev->driver->unload(dev); gfxp_mempool_destroy(); if (drm_core_has_AGP(dev) && dev->agp) { drm_agp_cleanup(dev); kfree(dev->agp, sizeof(*dev->agp)); dev->agp = NULL; } drm_vblank_cleanup(dev); list_for_each_entry_safe(r_list, list_temp, struct drm_map_list, &dev->maplist, head) (void) drm_rmmap(dev, r_list->map); idr_destroy(&dev->map_idr); drm_ctxbitmap_cleanup(dev); (void) drm_put_minor(&dev->vgatext); if (drm_core_has_AGP(dev)) (void) drm_put_minor(&dev->agpmaster); if (drm_core_check_feature(dev, DRIVER_MODESET)) (void) drm_put_minor(&dev->control); if (driver->driver_features & DRIVER_GEM) drm_gem_destroy(dev); (void) drm_put_minor(&dev->primary); mutex_destroy(&dev->irq_lock); mutex_destroy(&dev->ctxlist_mutex); mutex_destroy(&dev->struct_mutex); mutex_destroy(&dev->event_lock); mutex_destroy(&dev->count_lock); drm_fini_kstats(dev); }