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 LT |
51 | |
52 | drm_head_t **drm_heads; | |
53 | struct drm_sysfs_class *drm_class; | |
54 | struct proc_dir_entry *drm_proc_root; | |
55 | ||
b5e89ed5 DA |
56 | static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, |
57 | const struct pci_device_id *ent, | |
58 | struct drm_driver *driver) | |
1da177e4 LT |
59 | { |
60 | int retcode; | |
61 | ||
62 | spin_lock_init(&dev->count_lock); | |
b5e89ed5 | 63 | init_timer(&dev->timer); |
30e2fb18 DA |
64 | mutex_init(&dev->struct_mutex); |
65 | mutex_init(&dev->ctxlist_mutex); | |
1da177e4 | 66 | |
b5e89ed5 | 67 | dev->pdev = pdev; |
1da177e4 LT |
68 | |
69 | #ifdef __alpha__ | |
b5e89ed5 | 70 | dev->hose = pdev->sysdata; |
1da177e4 LT |
71 | dev->pci_domain = dev->hose->bus->number; |
72 | #else | |
73 | dev->pci_domain = 0; | |
74 | #endif | |
75 | dev->pci_bus = pdev->bus->number; | |
76 | dev->pci_slot = PCI_SLOT(pdev->devfn); | |
77 | dev->pci_func = PCI_FUNC(pdev->devfn); | |
78 | dev->irq = pdev->irq; | |
79 | ||
836cf046 DA |
80 | dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS); |
81 | if (dev->maplist == NULL) | |
82 | return -ENOMEM; | |
83 | INIT_LIST_HEAD(&dev->maplist->head); | |
84 | ||
1da177e4 LT |
85 | /* the DRM has 6 basic counters */ |
86 | dev->counters = 6; | |
b5e89ed5 DA |
87 | dev->types[0] = _DRM_STAT_LOCK; |
88 | dev->types[1] = _DRM_STAT_OPENS; | |
89 | dev->types[2] = _DRM_STAT_CLOSES; | |
90 | dev->types[3] = _DRM_STAT_IOCTLS; | |
91 | dev->types[4] = _DRM_STAT_LOCKS; | |
92 | dev->types[5] = _DRM_STAT_UNLOCKS; | |
1da177e4 LT |
93 | |
94 | dev->driver = driver; | |
b5e89ed5 | 95 | |
22eae947 DA |
96 | if (dev->driver->load) |
97 | if ((retcode = dev->driver->load(dev, ent->driver_data))) | |
1da177e4 LT |
98 | goto error_out_unreg; |
99 | ||
100 | if (drm_core_has_AGP(dev)) { | |
cda17380 DA |
101 | if (drm_device_is_agp(dev)) |
102 | dev->agp = drm_agp_init(dev); | |
b5e89ed5 DA |
103 | if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) |
104 | && (dev->agp == NULL)) { | |
105 | DRM_ERROR("Cannot initialize the agpgart module.\n"); | |
1da177e4 LT |
106 | retcode = -EINVAL; |
107 | goto error_out_unreg; | |
108 | } | |
109 | if (drm_core_has_MTRR(dev)) { | |
110 | if (dev->agp) | |
b5e89ed5 DA |
111 | dev->agp->agp_mtrr = |
112 | mtrr_add(dev->agp->agp_info.aper_base, | |
113 | dev->agp->agp_info.aper_size * | |
114 | 1024 * 1024, MTRR_TYPE_WRCOMB, 1); | |
1da177e4 LT |
115 | } |
116 | } | |
117 | ||
b5e89ed5 DA |
118 | retcode = drm_ctxbitmap_init(dev); |
119 | if (retcode) { | |
120 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); | |
1da177e4 LT |
121 | goto error_out_unreg; |
122 | } | |
123 | ||
124 | return 0; | |
b5e89ed5 DA |
125 | |
126 | error_out_unreg: | |
22eae947 | 127 | drm_lastclose(dev); |
1da177e4 LT |
128 | return retcode; |
129 | } | |
130 | ||
1da177e4 | 131 | |
1da177e4 LT |
132 | /** |
133 | * Get a secondary minor number. | |
134 | * | |
135 | * \param dev device data structure | |
136 | * \param sec-minor structure to hold the assigned minor | |
137 | * \return negative number on failure. | |
138 | * | |
139 | * Search an empty entry and initialize it to the given parameters, and | |
140 | * create the proc init entry via proc_init(). This routines assigns | |
141 | * minor numbers to secondary heads of multi-headed cards | |
142 | */ | |
b5e89ed5 | 143 | static int drm_get_head(drm_device_t * dev, drm_head_t * head) |
1da177e4 LT |
144 | { |
145 | drm_head_t **heads = drm_heads; | |
146 | int ret; | |
147 | int minor; | |
148 | ||
149 | DRM_DEBUG("\n"); | |
150 | ||
151 | for (minor = 0; minor < drm_cards_limit; minor++, heads++) { | |
152 | if (!*heads) { | |
b5e89ed5 | 153 | |
1da177e4 | 154 | *head = (drm_head_t) { |
b5e89ed5 DA |
155 | .dev = dev,.device = |
156 | MKDEV(DRM_MAJOR, minor),.minor = minor,}; | |
157 | ||
158 | if ((ret = | |
159 | drm_proc_init(dev, minor, drm_proc_root, | |
160 | &head->dev_root))) { | |
161 | printk(KERN_ERR | |
162 | "DRM: Failed to initialize /proc/dri.\n"); | |
1da177e4 LT |
163 | goto err_g1; |
164 | } | |
165 | ||
732052ed | 166 | head->dev_class = drm_sysfs_device_add(drm_class, head); |
1da177e4 | 167 | if (IS_ERR(head->dev_class)) { |
b5e89ed5 DA |
168 | printk(KERN_ERR |
169 | "DRM: Error sysfs_device_add.\n"); | |
1da177e4 LT |
170 | ret = PTR_ERR(head->dev_class); |
171 | goto err_g2; | |
172 | } | |
173 | *heads = head; | |
174 | ||
175 | DRM_DEBUG("new minor assigned %d\n", minor); | |
176 | return 0; | |
177 | } | |
178 | } | |
179 | DRM_ERROR("out of minors\n"); | |
180 | return -ENOMEM; | |
b5e89ed5 | 181 | err_g2: |
1da177e4 | 182 | drm_proc_cleanup(minor, drm_proc_root, head->dev_root); |
b5e89ed5 DA |
183 | err_g1: |
184 | *head = (drm_head_t) { | |
185 | .dev = NULL}; | |
1da177e4 LT |
186 | return ret; |
187 | } | |
b5e89ed5 | 188 | |
c94f7029 DA |
189 | /** |
190 | * Register. | |
191 | * | |
192 | * \param pdev - PCI device structure | |
193 | * \param ent entry from the PCI ID table with device type flags | |
194 | * \return zero on success or a negative number on failure. | |
195 | * | |
196 | * Attempt to gets inter module "drm" information. If we are first | |
197 | * then register the character device and inter module information. | |
198 | * Try and register, if we fail to register, backout previous work. | |
199 | */ | |
200 | int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent, | |
b5e89ed5 | 201 | struct drm_driver *driver) |
c94f7029 DA |
202 | { |
203 | drm_device_t *dev; | |
204 | int ret; | |
205 | ||
206 | DRM_DEBUG("\n"); | |
207 | ||
208 | dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB); | |
209 | if (!dev) | |
210 | return -ENOMEM; | |
211 | ||
212 | pci_enable_device(pdev); | |
213 | ||
214 | if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) { | |
215 | printk(KERN_ERR "DRM: Fill_in_dev failed.\n"); | |
216 | goto err_g1; | |
217 | } | |
218 | if ((ret = drm_get_head(dev, &dev->primary))) | |
219 | goto err_g1; | |
22eae947 DA |
220 | |
221 | DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", | |
222 | driver->name, driver->major, driver->minor, driver->patchlevel, | |
223 | driver->date, dev->primary.minor); | |
c94f7029 DA |
224 | |
225 | return 0; | |
226 | ||
b5e89ed5 | 227 | err_g1: |
c94f7029 DA |
228 | drm_free(dev, sizeof(*dev), DRM_MEM_STUB); |
229 | return ret; | |
230 | } | |
b5e89ed5 | 231 | |
c94f7029 | 232 | EXPORT_SYMBOL(drm_get_dev); |
1da177e4 LT |
233 | |
234 | /** | |
235 | * Put a device minor number. | |
236 | * | |
237 | * \param dev device data structure | |
238 | * \return always zero | |
239 | * | |
240 | * Cleans up the proc resources. If it is the last minor then release the foreign | |
241 | * "drm" data, otherwise unregisters the "drm" data, frees the dev list and | |
242 | * unregisters the character device. | |
243 | */ | |
244 | int drm_put_dev(drm_device_t * dev) | |
245 | { | |
246 | DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name); | |
247 | ||
248 | if (dev->unique) { | |
249 | drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); | |
250 | dev->unique = NULL; | |
251 | dev->unique_len = 0; | |
252 | } | |
253 | if (dev->devname) { | |
254 | drm_free(dev->devname, strlen(dev->devname) + 1, | |
255 | DRM_MEM_DRIVER); | |
256 | dev->devname = NULL; | |
257 | } | |
258 | drm_free(dev, sizeof(*dev), DRM_MEM_STUB); | |
259 | return 0; | |
260 | } | |
261 | ||
262 | /** | |
263 | * Put a secondary minor number. | |
264 | * | |
265 | * \param sec_minor - structure to be released | |
266 | * \return always zero | |
267 | * | |
268 | * Cleans up the proc resources. Not legal for this to be the | |
269 | * last minor released. | |
270 | * | |
271 | */ | |
b5e89ed5 | 272 | int drm_put_head(drm_head_t * head) |
1da177e4 LT |
273 | { |
274 | int minor = head->minor; | |
b5e89ed5 | 275 | |
1da177e4 | 276 | DRM_DEBUG("release secondary minor %d\n", minor); |
b5e89ed5 | 277 | |
1da177e4 | 278 | drm_proc_cleanup(minor, drm_proc_root, head->dev_root); |
732052ed | 279 | drm_sysfs_device_remove(head->dev_class); |
b5e89ed5 | 280 | |
732052ed | 281 | *head = (drm_head_t) {.dev = NULL}; |
1da177e4 LT |
282 | |
283 | drm_heads[minor] = NULL; | |
b5e89ed5 | 284 | |
1da177e4 LT |
285 | return 0; |
286 | } |