Commit | Line | Data |
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1da177e4 LT |
1 | /** |
2 | * \file drm_stub.h | |
3 | * Stub support | |
4 | * | |
5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org | |
10 | * | |
11 | * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. | |
12 | * All Rights Reserved. | |
13 | * | |
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: | |
20 | * | |
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 | |
23 | * Software. | |
24 | * | |
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. | |
32 | */ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/moduleparam.h> | |
36 | #include "drmP.h" | |
37 | #include "drm_core.h" | |
38 | ||
39 | unsigned int drm_cards_limit = 16; /* Enough for one machine */ | |
b5e89ed5 | 40 | unsigned int drm_debug = 0; /* 1 to enable debug output */ |
1da177e4 LT |
41 | EXPORT_SYMBOL(drm_debug); |
42 | ||
b5e89ed5 DA |
43 | MODULE_AUTHOR(CORE_AUTHOR); |
44 | MODULE_DESCRIPTION(CORE_DESC); | |
1da177e4 LT |
45 | MODULE_LICENSE("GPL and additional rights"); |
46 | MODULE_PARM_DESC(cards_limit, "Maximum number of graphics cards"); | |
47 | MODULE_PARM_DESC(debug, "Enable debug output"); | |
48 | ||
49 | module_param_named(cards_limit, drm_cards_limit, int, 0444); | |
c0758146 | 50 | module_param_named(debug, drm_debug, int, 0600); |
1da177e4 | 51 | |
84b1fd10 | 52 | struct drm_head **drm_heads; |
0650fd58 | 53 | struct class *drm_class; |
1da177e4 LT |
54 | struct proc_dir_entry *drm_proc_root; |
55 | ||
84b1fd10 | 56 | static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev, |
b5e89ed5 DA |
57 | const struct pci_device_id *ent, |
58 | struct drm_driver *driver) | |
1da177e4 LT |
59 | { |
60 | int retcode; | |
61 | ||
bd1b331f | 62 | INIT_LIST_HEAD(&dev->filelist); |
7c158ace DA |
63 | INIT_LIST_HEAD(&dev->ctxlist); |
64 | INIT_LIST_HEAD(&dev->vmalist); | |
65 | INIT_LIST_HEAD(&dev->maplist); | |
66 | ||
1da177e4 | 67 | spin_lock_init(&dev->count_lock); |
bea5679f | 68 | spin_lock_init(&dev->drw_lock); |
8163e418 | 69 | spin_lock_init(&dev->tasklet_lock); |
040ac320 | 70 | spin_lock_init(&dev->lock.spinlock); |
b5e89ed5 | 71 | init_timer(&dev->timer); |
30e2fb18 DA |
72 | mutex_init(&dev->struct_mutex); |
73 | mutex_init(&dev->ctxlist_mutex); | |
1da177e4 | 74 | |
45ea5dcd DA |
75 | idr_init(&dev->drw_idr); |
76 | ||
b5e89ed5 | 77 | dev->pdev = pdev; |
2f02cc3f EA |
78 | dev->pci_device = pdev->device; |
79 | dev->pci_vendor = pdev->vendor; | |
1da177e4 LT |
80 | |
81 | #ifdef __alpha__ | |
b5e89ed5 | 82 | dev->hose = pdev->sysdata; |
1da177e4 | 83 | #endif |
1da177e4 LT |
84 | dev->irq = pdev->irq; |
85 | ||
8d153f71 | 86 | if (drm_ht_create(&dev->map_hash, 12)) { |
8d153f71 TH |
87 | return -ENOMEM; |
88 | } | |
836cf046 | 89 | |
1da177e4 LT |
90 | /* the DRM has 6 basic counters */ |
91 | dev->counters = 6; | |
b5e89ed5 DA |
92 | dev->types[0] = _DRM_STAT_LOCK; |
93 | dev->types[1] = _DRM_STAT_OPENS; | |
94 | dev->types[2] = _DRM_STAT_CLOSES; | |
95 | dev->types[3] = _DRM_STAT_IOCTLS; | |
96 | dev->types[4] = _DRM_STAT_LOCKS; | |
97 | dev->types[5] = _DRM_STAT_UNLOCKS; | |
1da177e4 LT |
98 | |
99 | dev->driver = driver; | |
b5e89ed5 | 100 | |
1da177e4 | 101 | if (drm_core_has_AGP(dev)) { |
cda17380 DA |
102 | if (drm_device_is_agp(dev)) |
103 | dev->agp = drm_agp_init(dev); | |
b5e89ed5 DA |
104 | if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) |
105 | && (dev->agp == NULL)) { | |
106 | DRM_ERROR("Cannot initialize the agpgart module.\n"); | |
1da177e4 LT |
107 | retcode = -EINVAL; |
108 | goto error_out_unreg; | |
109 | } | |
110 | if (drm_core_has_MTRR(dev)) { | |
111 | if (dev->agp) | |
b5e89ed5 DA |
112 | dev->agp->agp_mtrr = |
113 | mtrr_add(dev->agp->agp_info.aper_base, | |
114 | dev->agp->agp_info.aper_size * | |
115 | 1024 * 1024, MTRR_TYPE_WRCOMB, 1); | |
1da177e4 LT |
116 | } |
117 | } | |
118 | ||
2716a02f DA |
119 | if (dev->driver->load) |
120 | if ((retcode = dev->driver->load(dev, ent->driver_data))) | |
121 | goto error_out_unreg; | |
122 | ||
b5e89ed5 DA |
123 | retcode = drm_ctxbitmap_init(dev); |
124 | if (retcode) { | |
125 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); | |
1da177e4 LT |
126 | goto error_out_unreg; |
127 | } | |
128 | ||
129 | return 0; | |
b5e89ed5 DA |
130 | |
131 | error_out_unreg: | |
22eae947 | 132 | drm_lastclose(dev); |
1da177e4 LT |
133 | return retcode; |
134 | } | |
135 | ||
1da177e4 | 136 | |
1da177e4 LT |
137 | /** |
138 | * Get a secondary minor number. | |
139 | * | |
140 | * \param dev device data structure | |
141 | * \param sec-minor structure to hold the assigned minor | |
142 | * \return negative number on failure. | |
143 | * | |
144 | * Search an empty entry and initialize it to the given parameters, and | |
145 | * create the proc init entry via proc_init(). This routines assigns | |
146 | * minor numbers to secondary heads of multi-headed cards | |
147 | */ | |
84b1fd10 | 148 | static int drm_get_head(struct drm_device * dev, struct drm_head * head) |
1da177e4 | 149 | { |
84b1fd10 | 150 | struct drm_head **heads = drm_heads; |
1da177e4 LT |
151 | int ret; |
152 | int minor; | |
153 | ||
154 | DRM_DEBUG("\n"); | |
155 | ||
156 | for (minor = 0; minor < drm_cards_limit; minor++, heads++) { | |
157 | if (!*heads) { | |
b5e89ed5 | 158 | |
84b1fd10 | 159 | *head = (struct drm_head) { |
b5e89ed5 DA |
160 | .dev = dev,.device = |
161 | MKDEV(DRM_MAJOR, minor),.minor = minor,}; | |
162 | ||
163 | if ((ret = | |
164 | drm_proc_init(dev, minor, drm_proc_root, | |
165 | &head->dev_root))) { | |
166 | printk(KERN_ERR | |
167 | "DRM: Failed to initialize /proc/dri.\n"); | |
1da177e4 LT |
168 | goto err_g1; |
169 | } | |
170 | ||
e8b962b6 JB |
171 | ret = drm_sysfs_device_add(dev, head); |
172 | if (ret) { | |
b5e89ed5 DA |
173 | printk(KERN_ERR |
174 | "DRM: Error sysfs_device_add.\n"); | |
1da177e4 LT |
175 | goto err_g2; |
176 | } | |
177 | *heads = head; | |
178 | ||
179 | DRM_DEBUG("new minor assigned %d\n", minor); | |
180 | return 0; | |
181 | } | |
182 | } | |
183 | DRM_ERROR("out of minors\n"); | |
184 | return -ENOMEM; | |
b5e89ed5 | 185 | err_g2: |
1da177e4 | 186 | drm_proc_cleanup(minor, drm_proc_root, head->dev_root); |
b5e89ed5 | 187 | err_g1: |
84b1fd10 | 188 | *head = (struct drm_head) { |
b5e89ed5 | 189 | .dev = NULL}; |
1da177e4 LT |
190 | return ret; |
191 | } | |
b5e89ed5 | 192 | |
c94f7029 DA |
193 | /** |
194 | * Register. | |
195 | * | |
196 | * \param pdev - PCI device structure | |
197 | * \param ent entry from the PCI ID table with device type flags | |
198 | * \return zero on success or a negative number on failure. | |
199 | * | |
200 | * Attempt to gets inter module "drm" information. If we are first | |
201 | * then register the character device and inter module information. | |
202 | * Try and register, if we fail to register, backout previous work. | |
203 | */ | |
204 | int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent, | |
b5e89ed5 | 205 | struct drm_driver *driver) |
c94f7029 | 206 | { |
84b1fd10 | 207 | struct drm_device *dev; |
c94f7029 DA |
208 | int ret; |
209 | ||
210 | DRM_DEBUG("\n"); | |
211 | ||
212 | dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB); | |
213 | if (!dev) | |
214 | return -ENOMEM; | |
215 | ||
2c3f0edd JG |
216 | ret = pci_enable_device(pdev); |
217 | if (ret) | |
218 | goto err_g1; | |
c94f7029 DA |
219 | |
220 | if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) { | |
221 | printk(KERN_ERR "DRM: Fill_in_dev failed.\n"); | |
2c3f0edd | 222 | goto err_g2; |
c94f7029 DA |
223 | } |
224 | if ((ret = drm_get_head(dev, &dev->primary))) | |
2c3f0edd | 225 | goto err_g2; |
bc5f4523 | 226 | |
22eae947 DA |
227 | DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", |
228 | driver->name, driver->major, driver->minor, driver->patchlevel, | |
229 | driver->date, dev->primary.minor); | |
c94f7029 DA |
230 | |
231 | return 0; | |
232 | ||
2c3f0edd JG |
233 | err_g2: |
234 | pci_disable_device(pdev); | |
235 | err_g1: | |
c94f7029 DA |
236 | drm_free(dev, sizeof(*dev), DRM_MEM_STUB); |
237 | return ret; | |
238 | } | |
b5e89ed5 | 239 | |
1da177e4 LT |
240 | /** |
241 | * Put a device minor number. | |
242 | * | |
243 | * \param dev device data structure | |
244 | * \return always zero | |
245 | * | |
246 | * Cleans up the proc resources. If it is the last minor then release the foreign | |
247 | * "drm" data, otherwise unregisters the "drm" data, frees the dev list and | |
248 | * unregisters the character device. | |
249 | */ | |
84b1fd10 | 250 | int drm_put_dev(struct drm_device * dev) |
1da177e4 LT |
251 | { |
252 | DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name); | |
253 | ||
254 | if (dev->unique) { | |
255 | drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); | |
256 | dev->unique = NULL; | |
257 | dev->unique_len = 0; | |
258 | } | |
259 | if (dev->devname) { | |
260 | drm_free(dev->devname, strlen(dev->devname) + 1, | |
261 | DRM_MEM_DRIVER); | |
262 | dev->devname = NULL; | |
263 | } | |
264 | drm_free(dev, sizeof(*dev), DRM_MEM_STUB); | |
265 | return 0; | |
266 | } | |
267 | ||
268 | /** | |
269 | * Put a secondary minor number. | |
270 | * | |
271 | * \param sec_minor - structure to be released | |
272 | * \return always zero | |
273 | * | |
274 | * Cleans up the proc resources. Not legal for this to be the | |
275 | * last minor released. | |
276 | * | |
277 | */ | |
84b1fd10 | 278 | int drm_put_head(struct drm_head * head) |
1da177e4 LT |
279 | { |
280 | int minor = head->minor; | |
b5e89ed5 | 281 | |
1da177e4 | 282 | DRM_DEBUG("release secondary minor %d\n", minor); |
b5e89ed5 | 283 | |
1da177e4 | 284 | drm_proc_cleanup(minor, drm_proc_root, head->dev_root); |
e8b962b6 | 285 | drm_sysfs_device_remove(head->dev); |
b5e89ed5 | 286 | |
84b1fd10 | 287 | *head = (struct drm_head) {.dev = NULL}; |
1da177e4 LT |
288 | |
289 | drm_heads[minor] = NULL; | |
b5e89ed5 | 290 | |
1da177e4 LT |
291 | return 0; |
292 | } |