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>
39 unsigned int drm_debug = 0; /* 1 to enable debug output */
40 EXPORT_SYMBOL(drm_debug);
42 MODULE_AUTHOR(CORE_AUTHOR);
43 MODULE_DESCRIPTION(CORE_DESC);
44 MODULE_LICENSE("GPL and additional rights");
45 MODULE_PARM_DESC(debug, "Enable debug output");
47 module_param_named(debug, drm_debug, int, 0600);
49 struct idr drm_minors_idr;
51 struct class *drm_class;
52 struct proc_dir_entry *drm_proc_root;
54 static int drm_minor_get_id(struct drm_device *dev, int type)
58 int base = 0, limit = 63;
61 if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
62 DRM_ERROR("Out of memory expanding drawable idr\n");
65 mutex_lock(&dev->struct_mutex);
66 ret = idr_get_new_above(&drm_minors_idr, NULL,
68 mutex_unlock(&dev->struct_mutex);
75 if (new_id >= limit) {
76 idr_remove(&drm_minors_idr, new_id);
82 static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
83 const struct pci_device_id *ent,
84 struct drm_driver *driver)
88 INIT_LIST_HEAD(&dev->filelist);
89 INIT_LIST_HEAD(&dev->ctxlist);
90 INIT_LIST_HEAD(&dev->vmalist);
91 INIT_LIST_HEAD(&dev->maplist);
93 spin_lock_init(&dev->count_lock);
94 spin_lock_init(&dev->drw_lock);
95 spin_lock_init(&dev->lock.spinlock);
96 init_timer(&dev->timer);
97 mutex_init(&dev->struct_mutex);
98 mutex_init(&dev->ctxlist_mutex);
100 idr_init(&dev->drw_idr);
103 dev->pci_device = pdev->device;
104 dev->pci_vendor = pdev->vendor;
107 dev->hose = pdev->sysdata;
110 if (drm_ht_create(&dev->map_hash, 12)) {
114 /* the DRM has 6 basic counters */
116 dev->types[0] = _DRM_STAT_LOCK;
117 dev->types[1] = _DRM_STAT_OPENS;
118 dev->types[2] = _DRM_STAT_CLOSES;
119 dev->types[3] = _DRM_STAT_IOCTLS;
120 dev->types[4] = _DRM_STAT_LOCKS;
121 dev->types[5] = _DRM_STAT_UNLOCKS;
123 dev->driver = driver;
125 if (drm_core_has_AGP(dev)) {
126 if (drm_device_is_agp(dev))
127 dev->agp = drm_agp_init(dev);
128 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
129 && (dev->agp == NULL)) {
130 DRM_ERROR("Cannot initialize the agpgart module.\n");
132 goto error_out_unreg;
134 if (drm_core_has_MTRR(dev)) {
137 mtrr_add(dev->agp->agp_info.aper_base,
138 dev->agp->agp_info.aper_size *
139 1024 * 1024, MTRR_TYPE_WRCOMB, 1);
143 if (dev->driver->load)
144 if ((retcode = dev->driver->load(dev, ent->driver_data)))
145 goto error_out_unreg;
147 retcode = drm_ctxbitmap_init(dev);
149 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
150 goto error_out_unreg;
153 if (driver->driver_features & DRIVER_GEM) {
154 retcode = drm_gem_init(dev);
156 DRM_ERROR("Cannot initialize graphics execution "
158 goto error_out_unreg;
171 * Get a secondary minor number.
173 * \param dev device data structure
174 * \param sec-minor structure to hold the assigned minor
175 * \return negative number on failure.
177 * Search an empty entry and initialize it to the given parameters, and
178 * create the proc init entry via proc_init(). This routines assigns
179 * minor numbers to secondary heads of multi-headed cards
181 static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
183 struct drm_minor *new_minor;
189 minor_id = drm_minor_get_id(dev, type);
193 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
199 new_minor->type = type;
200 new_minor->device = MKDEV(DRM_MAJOR, minor_id);
201 new_minor->dev = dev;
202 new_minor->index = minor_id;
204 idr_replace(&drm_minors_idr, new_minor, minor_id);
206 if (type == DRM_MINOR_LEGACY) {
207 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
209 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
213 new_minor->dev_root = NULL;
215 ret = drm_sysfs_device_add(new_minor);
218 "DRM: Error sysfs_device_add.\n");
223 DRM_DEBUG("new minor assigned %d\n", minor_id);
228 if (new_minor->type == DRM_MINOR_LEGACY)
229 drm_proc_cleanup(new_minor, drm_proc_root);
233 idr_remove(&drm_minors_idr, minor_id);
241 * \param pdev - PCI device structure
242 * \param ent entry from the PCI ID table with device type flags
243 * \return zero on success or a negative number on failure.
245 * Attempt to gets inter module "drm" information. If we are first
246 * then register the character device and inter module information.
247 * Try and register, if we fail to register, backout previous work.
249 int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
250 struct drm_driver *driver)
252 struct drm_device *dev;
257 dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
261 ret = pci_enable_device(pdev);
265 pci_set_master(pdev);
266 if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
267 printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
270 if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
273 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
274 driver->name, driver->major, driver->minor, driver->patchlevel,
275 driver->date, dev->primary->index);
280 pci_disable_device(pdev);
282 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
287 * Put a device minor number.
289 * \param dev device data structure
290 * \return always zero
292 * Cleans up the proc resources. If it is the last minor then release the foreign
293 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
294 * unregisters the character device.
296 int drm_put_dev(struct drm_device * dev)
298 DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
301 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
306 drm_free(dev->devname, strlen(dev->devname) + 1,
310 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
315 * Put a secondary minor number.
317 * \param sec_minor - structure to be released
318 * \return always zero
320 * Cleans up the proc resources. Not legal for this to be the
321 * last minor released.
324 int drm_put_minor(struct drm_minor **minor_p)
326 struct drm_minor *minor = *minor_p;
328 DRM_DEBUG("release secondary minor %d\n", minor->index);
330 if (minor->type == DRM_MINOR_LEGACY)
331 drm_proc_cleanup(minor, drm_proc_root);
332 drm_sysfs_device_remove(minor);
334 idr_remove(&drm_minors_idr, minor->index);