diff options
Diffstat (limited to 'usr/src/uts/common/io/drm/drm_stub.c')
| -rw-r--r-- | usr/src/uts/common/io/drm/drm_stub.c | 526 |
1 files changed, 526 insertions, 0 deletions
diff --git a/usr/src/uts/common/io/drm/drm_stub.c b/usr/src/uts/common/io/drm/drm_stub.c new file mode 100644 index 0000000..ec82b0a --- /dev/null +++ b/usr/src/uts/common/io/drm/drm_stub.c @@ -0,0 +1,526 @@ +/* + * 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 <faith@valinux.com> + */ + +/* + * 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; + + 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); + + if (type == DRM_MINOR_LEGACY) + (void) sprintf(new_minor->name, "drm%d", new_minor->index); + else if (type == DRM_MINOR_CONTROL) + (void) sprintf(new_minor->name, "controlD%d", new_minor->index); + else if (type == DRM_MINOR_RENDER) + (void) sprintf(new_minor->name, "renderD%d", new_minor->index); + else if (type == DRM_MINOR_VGATEXT) + (void) sprintf(new_minor->name, "gfx%d", new_minor->index - DRM_MINOR_ID_BASE_VGATEXT); + else if (type == DRM_MINOR_AGPMASTER) + (void) sprintf(new_minor->name, "agpmaster%d", new_minor->index - DRM_MINOR_ID_BASE_AGPMASTER); + + 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); + + 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); +} |