2005-04-16 16:20:36 -06:00
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/**
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* \file drm_stub.h
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* Stub support
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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*/
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/*
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* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
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*
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* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include "drmP.h"
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#include "drm_core.h"
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2005-09-24 22:28:13 -06:00
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unsigned int drm_debug = 0; /* 1 to enable debug output */
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2005-04-16 16:20:36 -06:00
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EXPORT_SYMBOL(drm_debug);
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2005-09-24 22:28:13 -06:00
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MODULE_AUTHOR(CORE_AUTHOR);
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MODULE_DESCRIPTION(CORE_DESC);
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2005-04-16 16:20:36 -06:00
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MODULE_LICENSE("GPL and additional rights");
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MODULE_PARM_DESC(debug, "Enable debug output");
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2005-10-03 13:02:20 -06:00
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module_param_named(debug, drm_debug, int, 0600);
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2005-04-16 16:20:36 -06:00
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2008-04-21 00:47:32 -06:00
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struct idr drm_minors_idr;
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2006-01-20 15:08:59 -07:00
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struct class *drm_class;
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2005-04-16 16:20:36 -06:00
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struct proc_dir_entry *drm_proc_root;
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2008-04-21 00:47:32 -06:00
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static int drm_minor_get_id(struct drm_device *dev, int type)
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{
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int new_id;
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int ret;
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int base = 0, limit = 63;
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again:
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if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
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DRM_ERROR("Out of memory expanding drawable idr\n");
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return -ENOMEM;
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}
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mutex_lock(&dev->struct_mutex);
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ret = idr_get_new_above(&drm_minors_idr, NULL,
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base, &new_id);
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mutex_unlock(&dev->struct_mutex);
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if (ret == -EAGAIN) {
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goto again;
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} else if (ret) {
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return ret;
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}
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if (new_id >= limit) {
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idr_remove(&drm_minors_idr, new_id);
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return -EINVAL;
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}
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return new_id;
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}
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2008-11-27 21:22:24 -07:00
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struct drm_master *drm_master_create(struct drm_minor *minor)
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{
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struct drm_master *master;
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master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
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if (!master)
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return NULL;
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kref_init(&master->refcount);
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spin_lock_init(&master->lock.spinlock);
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init_waitqueue_head(&master->lock.lock_queue);
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drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
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INIT_LIST_HEAD(&master->magicfree);
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master->minor = minor;
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list_add_tail(&master->head, &minor->master_list);
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return master;
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}
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struct drm_master *drm_master_get(struct drm_master *master)
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{
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kref_get(&master->refcount);
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return master;
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}
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static void drm_master_destroy(struct kref *kref)
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{
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struct drm_master *master = container_of(kref, struct drm_master, refcount);
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struct drm_magic_entry *pt, *next;
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struct drm_device *dev = master->minor->dev;
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list_del(&master->head);
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if (dev->driver->master_destroy)
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dev->driver->master_destroy(dev, master);
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if (master->unique) {
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2008-12-01 20:38:47 -07:00
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drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
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2008-11-27 21:22:24 -07:00
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master->unique = NULL;
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master->unique_len = 0;
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}
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list_for_each_entry_safe(pt, next, &master->magicfree, head) {
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list_del(&pt->head);
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drm_ht_remove_item(&master->magiclist, &pt->hash_item);
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drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
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}
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drm_ht_remove(&master->magiclist);
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if (master->lock.hw_lock) {
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if (dev->sigdata.lock == master->lock.hw_lock)
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dev->sigdata.lock = NULL;
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master->lock.hw_lock = NULL;
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master->lock.file_priv = NULL;
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wake_up_interruptible(&master->lock.lock_queue);
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}
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drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
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}
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void drm_master_put(struct drm_master **master)
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{
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kref_put(&(*master)->refcount, drm_master_destroy);
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*master = NULL;
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}
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int drm_setmaster_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
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return -EINVAL;
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if (!file_priv->master)
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return -EINVAL;
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if (!file_priv->minor->master &&
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file_priv->minor->master != file_priv->master) {
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mutex_lock(&dev->struct_mutex);
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file_priv->minor->master = drm_master_get(file_priv->master);
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mutex_lock(&dev->struct_mutex);
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}
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return 0;
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}
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int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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if (!file_priv->master)
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return -EINVAL;
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mutex_lock(&dev->struct_mutex);
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drm_master_put(&file_priv->minor->master);
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mutex_unlock(&dev->struct_mutex);
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return 0;
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}
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2007-07-10 23:53:27 -06:00
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static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
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2005-09-24 22:28:13 -06:00
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const struct pci_device_id *ent,
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struct drm_driver *driver)
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2005-04-16 16:20:36 -06:00
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{
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int retcode;
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2007-05-25 13:01:51 -06:00
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INIT_LIST_HEAD(&dev->filelist);
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2007-07-10 20:05:36 -06:00
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INIT_LIST_HEAD(&dev->ctxlist);
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INIT_LIST_HEAD(&dev->vmalist);
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INIT_LIST_HEAD(&dev->maplist);
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2005-04-16 16:20:36 -06:00
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spin_lock_init(&dev->count_lock);
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2006-10-24 07:04:19 -06:00
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spin_lock_init(&dev->drw_lock);
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2005-09-24 22:28:13 -06:00
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init_timer(&dev->timer);
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2006-02-02 01:37:46 -07:00
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mutex_init(&dev->struct_mutex);
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mutex_init(&dev->ctxlist_mutex);
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2005-04-16 16:20:36 -06:00
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2007-07-16 22:20:07 -06:00
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idr_init(&dev->drw_idr);
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2005-09-24 22:28:13 -06:00
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dev->pdev = pdev;
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2006-09-21 12:19:34 -06:00
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dev->pci_device = pdev->device;
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dev->pci_vendor = pdev->vendor;
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2005-04-16 16:20:36 -06:00
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#ifdef __alpha__
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2005-09-24 22:28:13 -06:00
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dev->hose = pdev->sysdata;
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2005-04-16 16:20:36 -06:00
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#endif
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2006-08-07 06:36:47 -06:00
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if (drm_ht_create(&dev->map_hash, 12)) {
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return -ENOMEM;
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}
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2005-07-10 03:27:04 -06:00
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2005-04-16 16:20:36 -06:00
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/* the DRM has 6 basic counters */
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dev->counters = 6;
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2005-09-24 22:28:13 -06:00
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dev->types[0] = _DRM_STAT_LOCK;
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dev->types[1] = _DRM_STAT_OPENS;
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dev->types[2] = _DRM_STAT_CLOSES;
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dev->types[3] = _DRM_STAT_IOCTLS;
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dev->types[4] = _DRM_STAT_LOCKS;
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dev->types[5] = _DRM_STAT_UNLOCKS;
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2005-04-16 16:20:36 -06:00
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dev->driver = driver;
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2005-09-24 22:28:13 -06:00
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2005-04-16 16:20:36 -06:00
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if (drm_core_has_AGP(dev)) {
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2005-07-10 01:31:26 -06:00
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if (drm_device_is_agp(dev))
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dev->agp = drm_agp_init(dev);
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2005-09-24 22:28:13 -06:00
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if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
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&& (dev->agp == NULL)) {
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DRM_ERROR("Cannot initialize the agpgart module.\n");
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2005-04-16 16:20:36 -06:00
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retcode = -EINVAL;
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goto error_out_unreg;
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}
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if (drm_core_has_MTRR(dev)) {
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if (dev->agp)
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2005-09-24 22:28:13 -06:00
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dev->agp->agp_mtrr =
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mtrr_add(dev->agp->agp_info.aper_base,
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dev->agp->agp_info.aper_size *
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1024 * 1024, MTRR_TYPE_WRCOMB, 1);
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2005-04-16 16:20:36 -06:00
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}
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}
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2007-11-22 01:23:13 -07:00
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2005-09-24 22:28:13 -06:00
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retcode = drm_ctxbitmap_init(dev);
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if (retcode) {
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DRM_ERROR("Cannot allocate memory for context bitmap.\n");
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2005-04-16 16:20:36 -06:00
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goto error_out_unreg;
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}
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2008-07-30 13:06:12 -06:00
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if (driver->driver_features & DRIVER_GEM) {
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retcode = drm_gem_init(dev);
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if (retcode) {
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DRM_ERROR("Cannot initialize graphics execution "
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"manager (GEM)\n");
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goto error_out_unreg;
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}
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}
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2005-04-16 16:20:36 -06:00
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return 0;
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2005-09-24 22:28:13 -06:00
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error_out_unreg:
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2005-11-10 04:16:34 -07:00
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drm_lastclose(dev);
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2005-04-16 16:20:36 -06:00
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return retcode;
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}
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/**
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* Get a secondary minor number.
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*
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* \param dev device data structure
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* \param sec-minor structure to hold the assigned minor
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* \return negative number on failure.
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*
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* Search an empty entry and initialize it to the given parameters, and
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* create the proc init entry via proc_init(). This routines assigns
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* minor numbers to secondary heads of multi-headed cards
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*/
|
2008-04-21 00:47:32 -06:00
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static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
|
2005-04-16 16:20:36 -06:00
|
|
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{
|
2008-04-21 00:47:32 -06:00
|
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struct drm_minor *new_minor;
|
2005-04-16 16:20:36 -06:00
|
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int ret;
|
2008-04-21 00:47:32 -06:00
|
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int minor_id;
|
2005-04-16 16:20:36 -06:00
|
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DRM_DEBUG("\n");
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|
|
|
2008-04-21 00:47:32 -06:00
|
|
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minor_id = drm_minor_get_id(dev, type);
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|
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if (minor_id < 0)
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return minor_id;
|
|
|
|
|
|
|
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new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
|
|
|
|
if (!new_minor) {
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|
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ret = -ENOMEM;
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goto err_idr;
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|
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}
|
|
|
|
|
|
|
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new_minor->type = type;
|
|
|
|
new_minor->device = MKDEV(DRM_MAJOR, minor_id);
|
|
|
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new_minor->dev = dev;
|
|
|
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new_minor->index = minor_id;
|
2008-11-27 21:22:24 -07:00
|
|
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INIT_LIST_HEAD(&new_minor->master_list);
|
2008-04-21 00:47:32 -06:00
|
|
|
|
|
|
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idr_replace(&drm_minors_idr, new_minor, minor_id);
|
|
|
|
|
|
|
|
if (type == DRM_MINOR_LEGACY) {
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|
|
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ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
|
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|
|
if (ret) {
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|
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DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
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|
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goto err_mem;
|
2005-04-16 16:20:36 -06:00
|
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}
|
2008-04-21 00:47:32 -06:00
|
|
|
} else
|
|
|
|
new_minor->dev_root = NULL;
|
|
|
|
|
|
|
|
ret = drm_sysfs_device_add(new_minor);
|
|
|
|
if (ret) {
|
|
|
|
printk(KERN_ERR
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|
|
|
"DRM: Error sysfs_device_add.\n");
|
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|
|
goto err_g2;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2008-04-21 00:47:32 -06:00
|
|
|
*minor = new_minor;
|
|
|
|
|
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|
|
DRM_DEBUG("new minor assigned %d\n", minor_id);
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
|
|
err_g2:
|
|
|
|
if (new_minor->type == DRM_MINOR_LEGACY)
|
|
|
|
drm_proc_cleanup(new_minor, drm_proc_root);
|
|
|
|
err_mem:
|
|
|
|
kfree(new_minor);
|
|
|
|
err_idr:
|
|
|
|
idr_remove(&drm_minors_idr, minor_id);
|
|
|
|
*minor = NULL;
|
2005-04-16 16:20:36 -06:00
|
|
|
return ret;
|
|
|
|
}
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2005-07-07 05:03:38 -06:00
|
|
|
/**
|
|
|
|
* Register.
|
|
|
|
*
|
|
|
|
* \param pdev - PCI device structure
|
|
|
|
* \param ent entry from the PCI ID table with device type flags
|
|
|
|
* \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 pci_dev *pdev, const struct pci_device_id *ent,
|
2005-09-24 22:28:13 -06:00
|
|
|
struct drm_driver *driver)
|
2005-07-07 05:03:38 -06:00
|
|
|
{
|
2007-07-10 23:53:27 -06:00
|
|
|
struct drm_device *dev;
|
2005-07-07 05:03:38 -06:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
|
|
|
|
dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
|
|
|
|
if (!dev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2006-12-08 16:50:22 -07:00
|
|
|
ret = pci_enable_device(pdev);
|
|
|
|
if (ret)
|
|
|
|
goto err_g1;
|
2005-07-07 05:03:38 -06:00
|
|
|
|
2008-02-06 21:48:32 -07:00
|
|
|
pci_set_master(pdev);
|
2005-07-07 05:03:38 -06:00
|
|
|
if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
|
|
|
|
printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
|
2006-12-08 16:50:22 -07:00
|
|
|
goto err_g2;
|
2005-07-07 05:03:38 -06:00
|
|
|
}
|
2008-04-21 00:47:32 -06:00
|
|
|
if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
|
2006-12-08 16:50:22 -07:00
|
|
|
goto err_g2;
|
2007-11-04 19:50:58 -07:00
|
|
|
|
2008-12-06 19:02:21 -07:00
|
|
|
if (dev->driver->load)
|
|
|
|
if ((ret = dev->driver->load(dev, ent->driver_data)))
|
|
|
|
goto err_g3;
|
|
|
|
|
2008-11-27 20:43:47 -07:00
|
|
|
list_add_tail(&dev->driver_item, &driver->device_list);
|
|
|
|
|
2005-11-10 04:16:34 -07:00
|
|
|
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
|
|
|
|
driver->name, driver->major, driver->minor, driver->patchlevel,
|
2008-04-21 00:47:32 -06:00
|
|
|
driver->date, dev->primary->index);
|
2005-07-07 05:03:38 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
2008-12-06 19:02:21 -07:00
|
|
|
err_g3:
|
|
|
|
drm_put_minor(&dev->primary);
|
2006-12-08 16:50:22 -07:00
|
|
|
err_g2:
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
err_g1:
|
2005-07-07 05:03:38 -06:00
|
|
|
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
|
|
|
|
return ret;
|
|
|
|
}
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* Put a device minor number.
|
|
|
|
*
|
|
|
|
* \param dev device data structure
|
|
|
|
* \return always zero
|
|
|
|
*
|
|
|
|
* Cleans up the proc resources. If it is the last minor then release the foreign
|
|
|
|
* "drm" data, otherwise unregisters the "drm" data, frees the dev list and
|
|
|
|
* unregisters the character device.
|
|
|
|
*/
|
2007-07-10 23:53:27 -06:00
|
|
|
int drm_put_dev(struct drm_device * dev)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
|
|
|
|
|
|
|
|
if (dev->devname) {
|
|
|
|
drm_free(dev->devname, strlen(dev->devname) + 1,
|
|
|
|
DRM_MEM_DRIVER);
|
|
|
|
dev->devname = NULL;
|
|
|
|
}
|
|
|
|
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
*/
|
2008-04-21 00:47:32 -06:00
|
|
|
int drm_put_minor(struct drm_minor **minor_p)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2008-04-21 00:47:32 -06:00
|
|
|
struct drm_minor *minor = *minor_p;
|
2008-07-30 13:06:12 -06:00
|
|
|
|
2008-04-21 00:47:32 -06:00
|
|
|
DRM_DEBUG("release secondary minor %d\n", minor->index);
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2008-04-21 00:47:32 -06:00
|
|
|
if (minor->type == DRM_MINOR_LEGACY)
|
|
|
|
drm_proc_cleanup(minor, drm_proc_root);
|
|
|
|
drm_sysfs_device_remove(minor);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-04-21 00:47:32 -06:00
|
|
|
idr_remove(&drm_minors_idr, minor->index);
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2008-04-21 00:47:32 -06:00
|
|
|
kfree(minor);
|
|
|
|
*minor_p = NULL;
|
2005-04-16 16:20:36 -06:00
|
|
|
return 0;
|
|
|
|
}
|