5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
9 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
11 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
12 * All Rights Reserved.
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
21 * The above copyright notice and this permission notice (including the next
22 * paragraph) shall be included in all copies or substantial portions of the
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
28 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
29 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
30 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
31 * DEALINGS IN THE SOFTWARE.
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
40 unsigned int drm_debug = 0; /* 1 to enable debug output */
41 EXPORT_SYMBOL(drm_debug);
43 MODULE_AUTHOR(CORE_AUTHOR);
44 MODULE_DESCRIPTION(CORE_DESC);
45 MODULE_LICENSE("GPL and additional rights");
46 MODULE_PARM_DESC(debug, "Enable debug output");
48 module_param_named(debug, drm_debug, int, 0600);
50 struct idr drm_minors_idr;
52 struct class *drm_class;
53 struct proc_dir_entry *drm_proc_root;
55 static int drm_minor_get_id(struct drm_device *dev, int type)
59 int base = 0, limit = 63;
62 if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
63 DRM_ERROR("Out of memory expanding drawable idr\n");
66 mutex_lock(&dev->struct_mutex);
67 ret = idr_get_new_above(&drm_minors_idr, NULL,
69 mutex_unlock(&dev->struct_mutex);
76 if (new_id >= limit) {
77 idr_remove(&drm_minors_idr, new_id);
83 static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
84 const struct pci_device_id *ent,
85 struct drm_driver *driver)
89 INIT_LIST_HEAD(&dev->filelist);
90 INIT_LIST_HEAD(&dev->ctxlist);
91 INIT_LIST_HEAD(&dev->vmalist);
92 INIT_LIST_HEAD(&dev->maplist);
94 spin_lock_init(&dev->count_lock);
95 spin_lock_init(&dev->drw_lock);
96 spin_lock_init(&dev->tasklet_lock);
97 spin_lock_init(&dev->lock.spinlock);
98 init_timer(&dev->timer);
99 mutex_init(&dev->struct_mutex);
100 mutex_init(&dev->ctxlist_mutex);
101 mutex_init(&dev->bm.evict_mutex);
103 idr_init(&dev->drw_idr);
106 dev->pci_device = pdev->device;
107 dev->pci_vendor = pdev->vendor;
110 dev->hose = pdev->sysdata;
112 dev->irq = pdev->irq;
113 dev->irq_enabled = 0;
115 if (drm_ht_create(&dev->map_hash, DRM_MAP_HASH_ORDER)) {
118 if (drm_mm_init(&dev->offset_manager, DRM_FILE_PAGE_OFFSET_START,
119 DRM_FILE_PAGE_OFFSET_SIZE)) {
120 drm_ht_remove(&dev->map_hash);
124 if (drm_ht_create(&dev->object_hash, DRM_OBJECT_HASH_ORDER)) {
125 drm_ht_remove(&dev->map_hash);
126 drm_mm_takedown(&dev->offset_manager);
130 /* the DRM has 6 counters */
132 dev->types[0] = _DRM_STAT_LOCK;
133 dev->types[1] = _DRM_STAT_OPENS;
134 dev->types[2] = _DRM_STAT_CLOSES;
135 dev->types[3] = _DRM_STAT_IOCTLS;
136 dev->types[4] = _DRM_STAT_LOCKS;
137 dev->types[5] = _DRM_STAT_UNLOCKS;
139 dev->driver = driver;
141 if (drm_core_has_AGP(dev)) {
142 if (drm_device_is_agp(dev))
143 dev->agp = drm_agp_init(dev);
144 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
145 && (dev->agp == NULL)) {
146 DRM_ERROR("Cannot initialize the agpgart module.\n");
148 goto error_out_unreg;
151 if (drm_core_has_MTRR(dev)) {
154 mtrr_add(dev->agp->agp_info.aper_base,
155 dev->agp->agp_info.aper_size *
156 1024 * 1024, MTRR_TYPE_WRCOMB, 1);
160 retcode = drm_ctxbitmap_init(dev);
162 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
163 goto error_out_unreg;
166 drm_fence_manager_init(dev);
175 * Get a secondary minor number.
177 * \param dev device data structure
178 * \param sec-minor structure to hold the assigned minor
179 * \return negative number on failure.
181 * Search an empty entry and initialize it to the given parameters, and
182 * create the proc init entry via proc_init(). This routines assigns
183 * minor numbers to secondary heads of multi-headed cards
185 static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
187 struct drm_minor *new_minor;
193 minor_id = drm_minor_get_id(dev, type);
197 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
203 new_minor->type = type;
204 new_minor->device = MKDEV(DRM_MAJOR, minor_id);
205 new_minor->dev = dev;
206 new_minor->index = minor_id;
208 idr_replace(&drm_minors_idr, new_minor, minor_id);
210 if (type == DRM_MINOR_LEGACY) {
211 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
213 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
217 new_minor->dev_root = NULL;
219 ret = drm_sysfs_device_add(new_minor);
222 "DRM: Error sysfs_device_add.\n");
227 DRM_DEBUG("new minor assigned %d\n", minor_id);
232 if (new_minor->type == DRM_MINOR_LEGACY)
233 drm_proc_cleanup(new_minor, drm_proc_root);
237 idr_remove(&drm_minors_idr, minor_id);
245 * \param pdev - PCI device structure
246 * \param ent entry from the PCI ID table with device type flags
247 * \return zero on success or a negative number on failure.
249 * Attempt to gets inter module "drm" information. If we are first
250 * then register the character device and inter module information.
251 * Try and register, if we fail to register, backout previous work.
253 int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
254 struct drm_driver *driver)
256 struct drm_device *dev;
261 dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
265 if (!drm_fb_loaded) {
266 pci_set_drvdata(pdev, dev);
267 ret = pci_request_regions(pdev, driver->pci_driver.name);
272 ret = pci_enable_device(pdev);
275 pci_set_master(pdev);
277 if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
278 printk(KERN_ERR "DRM: fill_in_dev failed\n");
282 /* only add the control node on a modesetting platform */
283 if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
286 if (dev->driver->load)
287 if ((ret = dev->driver->load(dev, ent->driver_data)))
290 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
291 driver->name, driver->major, driver->minor, driver->patchlevel,
292 driver->date, dev->primary->index);
296 drm_put_minor(&dev->primary);
299 pci_disable_device(pdev);
302 pci_release_regions(pdev);
305 pci_set_drvdata(pdev, NULL);
307 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
308 printk(KERN_ERR "DRM: drm_get_dev failed.\n");
311 EXPORT_SYMBOL(drm_get_dev);
315 * Put a device minor number.
317 * \param dev device data structure
318 * \return always zero
320 * Cleans up the proc resources. If it is the last minor then release the foreign
321 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
322 * unregisters the character device.
324 int drm_put_dev(struct drm_device * dev)
326 DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
329 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
334 drm_free(dev->devname, strlen(dev->devname) + 1,
338 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
343 * Put a secondary minor number.
345 * \param sec_minor - structure to be released
346 * \return always zero
348 * Cleans up the proc resources. Not legal for this to be the
349 * last minor released.
352 int drm_put_minor(struct drm_minor **minor_p)
354 struct drm_minor *minor = *minor_p;
355 DRM_DEBUG("release secondary minor %d\n", minor->index);
357 if (minor->type == DRM_MINOR_LEGACY)
358 drm_proc_cleanup(minor, drm_proc_root);
359 drm_sysfs_device_remove(minor);
361 idr_remove(&drm_minors_idr, minor->index);