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-rw-r--r--drivers/char/drm/drm_stub.c331
1 files changed, 0 insertions, 331 deletions
diff --git a/drivers/char/drm/drm_stub.c b/drivers/char/drm/drm_stub.c
deleted file mode 100644
index c2f584f3b46c..000000000000
--- a/drivers/char/drm/drm_stub.c
+++ /dev/null
@@ -1,331 +0,0 @@
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
39unsigned int drm_debug = 0; /* 1 to enable debug output */
40EXPORT_SYMBOL(drm_debug);
41
42MODULE_AUTHOR(CORE_AUTHOR);
43MODULE_DESCRIPTION(CORE_DESC);
44MODULE_LICENSE("GPL and additional rights");
45MODULE_PARM_DESC(debug, "Enable debug output");
46
47module_param_named(debug, drm_debug, int, 0600);
48
49struct idr drm_minors_idr;
50
51struct class *drm_class;
52struct proc_dir_entry *drm_proc_root;
53
54static int drm_minor_get_id(struct drm_device *dev, int type)
55{
56 int new_id;
57 int ret;
58 int base = 0, limit = 63;
59
60again:
61 if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
62 DRM_ERROR("Out of memory expanding drawable idr\n");
63 return -ENOMEM;
64 }
65 mutex_lock(&dev->struct_mutex);
66 ret = idr_get_new_above(&drm_minors_idr, NULL,
67 base, &new_id);
68 mutex_unlock(&dev->struct_mutex);
69 if (ret == -EAGAIN) {
70 goto again;
71 } else if (ret) {
72 return ret;
73 }
74
75 if (new_id >= limit) {
76 idr_remove(&drm_minors_idr, new_id);
77 return -EINVAL;
78 }
79 return new_id;
80}
81
82static 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)
85{
86 int retcode;
87
88 INIT_LIST_HEAD(&dev->filelist);
89 INIT_LIST_HEAD(&dev->ctxlist);
90 INIT_LIST_HEAD(&dev->vmalist);
91 INIT_LIST_HEAD(&dev->maplist);
92
93 spin_lock_init(&dev->count_lock);
94 spin_lock_init(&dev->drw_lock);
95 spin_lock_init(&dev->tasklet_lock);
96 spin_lock_init(&dev->lock.spinlock);
97 init_timer(&dev->timer);
98 mutex_init(&dev->struct_mutex);
99 mutex_init(&dev->ctxlist_mutex);
100
101 idr_init(&dev->drw_idr);
102
103 dev->pdev = pdev;
104 dev->pci_device = pdev->device;
105 dev->pci_vendor = pdev->vendor;
106
107#ifdef __alpha__
108 dev->hose = pdev->sysdata;
109#endif
110 dev->irq = pdev->irq;
111
112 if (drm_ht_create(&dev->map_hash, 12)) {
113 return -ENOMEM;
114 }
115
116 /* the DRM has 6 basic counters */
117 dev->counters = 6;
118 dev->types[0] = _DRM_STAT_LOCK;
119 dev->types[1] = _DRM_STAT_OPENS;
120 dev->types[2] = _DRM_STAT_CLOSES;
121 dev->types[3] = _DRM_STAT_IOCTLS;
122 dev->types[4] = _DRM_STAT_LOCKS;
123 dev->types[5] = _DRM_STAT_UNLOCKS;
124
125 dev->driver = driver;
126
127 if (drm_core_has_AGP(dev)) {
128 if (drm_device_is_agp(dev))
129 dev->agp = drm_agp_init(dev);
130 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
131 && (dev->agp == NULL)) {
132 DRM_ERROR("Cannot initialize the agpgart module.\n");
133 retcode = -EINVAL;
134 goto error_out_unreg;
135 }
136 if (drm_core_has_MTRR(dev)) {
137 if (dev->agp)
138 dev->agp->agp_mtrr =
139 mtrr_add(dev->agp->agp_info.aper_base,
140 dev->agp->agp_info.aper_size *
141 1024 * 1024, MTRR_TYPE_WRCOMB, 1);
142 }
143 }
144
145 if (dev->driver->load)
146 if ((retcode = dev->driver->load(dev, ent->driver_data)))
147 goto error_out_unreg;
148
149 retcode = drm_ctxbitmap_init(dev);
150 if (retcode) {
151 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
152 goto error_out_unreg;
153 }
154
155 return 0;
156
157 error_out_unreg:
158 drm_lastclose(dev);
159 return retcode;
160}
161
162
163/**
164 * Get a secondary minor number.
165 *
166 * \param dev device data structure
167 * \param sec-minor structure to hold the assigned minor
168 * \return negative number on failure.
169 *
170 * Search an empty entry and initialize it to the given parameters, and
171 * create the proc init entry via proc_init(). This routines assigns
172 * minor numbers to secondary heads of multi-headed cards
173 */
174static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
175{
176 struct drm_minor *new_minor;
177 int ret;
178 int minor_id;
179
180 DRM_DEBUG("\n");
181
182 minor_id = drm_minor_get_id(dev, type);
183 if (minor_id < 0)
184 return minor_id;
185
186 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
187 if (!new_minor) {
188 ret = -ENOMEM;
189 goto err_idr;
190 }
191
192 new_minor->type = type;
193 new_minor->device = MKDEV(DRM_MAJOR, minor_id);
194 new_minor->dev = dev;
195 new_minor->index = minor_id;
196
197 idr_replace(&drm_minors_idr, new_minor, minor_id);
198
199 if (type == DRM_MINOR_LEGACY) {
200 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
201 if (ret) {
202 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
203 goto err_mem;
204 }
205 } else
206 new_minor->dev_root = NULL;
207
208 ret = drm_sysfs_device_add(new_minor);
209 if (ret) {
210 printk(KERN_ERR
211 "DRM: Error sysfs_device_add.\n");
212 goto err_g2;
213 }
214 *minor = new_minor;
215
216 DRM_DEBUG("new minor assigned %d\n", minor_id);
217 return 0;
218
219
220err_g2:
221 if (new_minor->type == DRM_MINOR_LEGACY)
222 drm_proc_cleanup(new_minor, drm_proc_root);
223err_mem:
224 kfree(new_minor);
225err_idr:
226 idr_remove(&drm_minors_idr, minor_id);
227 *minor = NULL;
228 return ret;
229}
230
231/**
232 * Register.
233 *
234 * \param pdev - PCI device structure
235 * \param ent entry from the PCI ID table with device type flags
236 * \return zero on success or a negative number on failure.
237 *
238 * Attempt to gets inter module "drm" information. If we are first
239 * then register the character device and inter module information.
240 * Try and register, if we fail to register, backout previous work.
241 */
242int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
243 struct drm_driver *driver)
244{
245 struct drm_device *dev;
246 int ret;
247
248 DRM_DEBUG("\n");
249
250 dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
251 if (!dev)
252 return -ENOMEM;
253
254 ret = pci_enable_device(pdev);
255 if (ret)
256 goto err_g1;
257
258 pci_set_master(pdev);
259 if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
260 printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
261 goto err_g2;
262 }
263 if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
264 goto err_g2;
265
266 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
267 driver->name, driver->major, driver->minor, driver->patchlevel,
268 driver->date, dev->primary->index);
269
270 return 0;
271
272err_g2:
273 pci_disable_device(pdev);
274err_g1:
275 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
276 return ret;
277}
278
279/**
280 * Put a device minor number.
281 *
282 * \param dev device data structure
283 * \return always zero
284 *
285 * Cleans up the proc resources. If it is the last minor then release the foreign
286 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
287 * unregisters the character device.
288 */
289int drm_put_dev(struct drm_device * dev)
290{
291 DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
292
293 if (dev->unique) {
294 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
295 dev->unique = NULL;
296 dev->unique_len = 0;
297 }
298 if (dev->devname) {
299 drm_free(dev->devname, strlen(dev->devname) + 1,
300 DRM_MEM_DRIVER);
301 dev->devname = NULL;
302 }
303 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
304 return 0;
305}
306
307/**
308 * Put a secondary minor number.
309 *
310 * \param sec_minor - structure to be released
311 * \return always zero
312 *
313 * Cleans up the proc resources. Not legal for this to be the
314 * last minor released.
315 *
316 */
317int drm_put_minor(struct drm_minor **minor_p)
318{
319 struct drm_minor *minor = *minor_p;
320 DRM_DEBUG("release secondary minor %d\n", minor->index);
321
322 if (minor->type == DRM_MINOR_LEGACY)
323 drm_proc_cleanup(minor, drm_proc_root);
324 drm_sysfs_device_remove(minor);
325
326 idr_remove(&drm_minors_idr, minor->index);
327
328 kfree(minor);
329 *minor_p = NULL;
330 return 0;
331}
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