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_cards_limit = 16; /* Enough for one machine */
41 unsigned int drm_debug = 0; /* 1 to enable debug output */
42 EXPORT_SYMBOL(drm_debug);
44 MODULE_AUTHOR(CORE_AUTHOR);
45 MODULE_DESCRIPTION(CORE_DESC);
46 MODULE_LICENSE("GPL and additional rights");
47 MODULE_PARM_DESC(cards_limit, "Maximum number of graphics cards");
48 MODULE_PARM_DESC(debug, "Enable debug output");
50 module_param_named(cards_limit, drm_cards_limit, int, 0444);
51 module_param_named(debug, drm_debug, int, 0600);
53 drm_head_t **drm_heads;
54 struct drm_sysfs_class *drm_class;
55 struct proc_dir_entry *drm_proc_root;
57 static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev,
58 const struct pci_device_id *ent,
59 struct drm_driver *driver)
63 spin_lock_init(&dev->count_lock);
64 spin_lock_init(&dev->drw_lock);
65 spin_lock_init(&dev->tasklet_lock);
66 spin_lock_init(&dev->lock.spinlock);
67 init_timer(&dev->timer);
68 mutex_init(&dev->struct_mutex);
69 mutex_init(&dev->ctxlist_mutex);
70 mutex_init(&dev->bm.init_mutex);
71 mutex_init(&dev->bm.evict_mutex);
74 dev->pci_device = pdev->device;
75 dev->pci_vendor = pdev->vendor;
78 dev->hose = pdev->sysdata;
82 if (drm_ht_create(&dev->map_hash, DRM_MAP_HASH_ORDER))
85 if (drm_mm_init(&dev->offset_manager, DRM_FILE_PAGE_OFFSET_START,
86 DRM_FILE_PAGE_OFFSET_SIZE)) {
87 drm_ht_remove(&dev->map_hash);
91 if (drm_ht_create(&dev->object_hash, DRM_OBJECT_HASH_ORDER)) {
92 drm_ht_remove(&dev->map_hash);
93 drm_mm_takedown(&dev->offset_manager);
97 dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS);
98 if (dev->maplist == NULL) {
99 drm_ht_remove(&dev->object_hash);
100 drm_ht_remove(&dev->map_hash);
101 drm_mm_takedown(&dev->offset_manager);
104 INIT_LIST_HEAD(&dev->maplist->head);
106 /* the DRM has 6 counters */
108 dev->types[0] = _DRM_STAT_LOCK;
109 dev->types[1] = _DRM_STAT_OPENS;
110 dev->types[2] = _DRM_STAT_CLOSES;
111 dev->types[3] = _DRM_STAT_IOCTLS;
112 dev->types[4] = _DRM_STAT_LOCKS;
113 dev->types[5] = _DRM_STAT_UNLOCKS;
115 dev->driver = driver;
117 if (drm_core_has_AGP(dev)) {
118 if (drm_device_is_agp(dev))
119 dev->agp = drm_agp_init(dev);
120 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
121 && (dev->agp == NULL)) {
122 DRM_ERROR("Cannot initialize the agpgart module.\n");
124 goto error_out_unreg;
127 if (drm_core_has_MTRR(dev)) {
130 mtrr_add(dev->agp->agp_info.aper_base,
131 dev->agp->agp_info.aper_size *
132 1024 * 1024, MTRR_TYPE_WRCOMB, 1);
136 if (dev->driver->load)
137 if ((retcode = dev->driver->load(dev, ent->driver_data)))
138 goto error_out_unreg;
140 retcode = drm_ctxbitmap_init(dev);
142 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
143 goto error_out_unreg;
146 drm_fence_manager_init(dev);
155 * Get a secondary minor number.
157 * \param dev device data structure
158 * \param sec-minor structure to hold the assigned minor
159 * \return negative number on failure.
161 * Search an empty entry and initialize it to the given parameters, and
162 * create the proc init entry via proc_init(). This routines assigns
163 * minor numbers to secondary heads of multi-headed cards
165 static int drm_get_head(drm_device_t * dev, drm_head_t * head)
167 drm_head_t **heads = drm_heads;
173 for (minor = 0; minor < drm_cards_limit; minor++, heads++) {
176 *head = (drm_head_t) {
178 .device = MKDEV(DRM_MAJOR, minor),
182 drm_proc_init(dev, minor, drm_proc_root,
185 "DRM: Failed to initialize /proc/dri.\n");
189 head->dev_class = drm_sysfs_device_add(drm_class, head);
190 if (IS_ERR(head->dev_class)) {
192 "DRM: Error sysfs_device_add.\n");
193 ret = PTR_ERR(head->dev_class);
198 DRM_DEBUG("new minor assigned %d\n", minor);
202 DRM_ERROR("out of minors\n");
205 drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
207 *head = (drm_head_t) {
215 * \param pdev - PCI device structure
216 * \param ent entry from the PCI ID table with device type flags
217 * \return zero on success or a negative number on failure.
219 * Attempt to gets inter module "drm" information. If we are first
220 * then register the character device and inter module information.
221 * Try and register, if we fail to register, backout previous work.
223 int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
224 struct drm_driver *driver)
231 dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
235 if (!drm_fb_loaded) {
236 pci_set_drvdata(pdev, dev);
237 pci_request_regions(pdev, driver->pci_driver.name);
240 pci_enable_device(pdev);
241 pci_set_master(pdev);
243 if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
244 printk(KERN_ERR "DRM: fill_in_dev failed\n");
247 if ((ret = drm_get_head(dev, &dev->primary)))
250 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
251 driver->name, driver->major, driver->minor, driver->patchlevel,
252 driver->date, dev->primary.minor);
257 if (!drm_fb_loaded) {
258 pci_set_drvdata(pdev, NULL);
259 pci_release_regions(pdev);
260 pci_disable_device(pdev);
262 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
263 printk(KERN_ERR "DRM: drm_get_dev failed.\n");
266 EXPORT_SYMBOL(drm_get_dev);
270 * Put a device minor number.
272 * \param dev device data structure
273 * \return always zero
275 * Cleans up the proc resources. If it is the last minor then release the foreign
276 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
277 * unregisters the character device.
279 int drm_put_dev(drm_device_t * dev)
281 DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
284 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
289 drm_free(dev->devname, strlen(dev->devname) + 1,
293 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
298 * Put a secondary minor number.
300 * \param sec_minor - structure to be released
301 * \return always zero
303 * Cleans up the proc resources. Not legal for this to be the
304 * last minor released.
307 int drm_put_head(drm_head_t * head)
309 int minor = head->minor;
311 DRM_DEBUG("release secondary minor %d\n", minor);
313 drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
314 drm_sysfs_device_remove(head->dev_class);
316 *head = (drm_head_t){.dev = NULL};
318 drm_heads[minor] = NULL;