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
->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
);
101 idr_init(&dev
->drw_idr
);
104 dev
->pci_device
= pdev
->device
;
105 dev
->pci_vendor
= pdev
->vendor
;
108 dev
->hose
= pdev
->sysdata
;
110 dev
->irq
= pdev
->irq
;
112 if (drm_ht_create(&dev
->map_hash
, 12)) {
116 /* the DRM has 6 basic counters */
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
;
125 dev
->driver
= driver
;
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");
134 goto error_out_unreg
;
136 if (drm_core_has_MTRR(dev
)) {
139 mtrr_add(dev
->agp
->agp_info
.aper_base
,
140 dev
->agp
->agp_info
.aper_size
*
141 1024 * 1024, MTRR_TYPE_WRCOMB
, 1);
145 if (dev
->driver
->load
)
146 if ((retcode
= dev
->driver
->load(dev
, ent
->driver_data
)))
147 goto error_out_unreg
;
149 retcode
= drm_ctxbitmap_init(dev
);
151 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
152 goto error_out_unreg
;
164 * Get a secondary minor number.
166 * \param dev device data structure
167 * \param sec-minor structure to hold the assigned minor
168 * \return negative number on failure.
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
174 static int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
)
176 struct drm_minor
*new_minor
;
182 minor_id
= drm_minor_get_id(dev
, type
);
186 new_minor
= kzalloc(sizeof(struct drm_minor
), GFP_KERNEL
);
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
;
197 idr_replace(&drm_minors_idr
, new_minor
, minor_id
);
199 if (type
== DRM_MINOR_LEGACY
) {
200 ret
= drm_proc_init(new_minor
, minor_id
, drm_proc_root
);
202 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
206 new_minor
->dev_root
= NULL
;
208 ret
= drm_sysfs_device_add(new_minor
);
211 "DRM: Error sysfs_device_add.\n");
216 DRM_DEBUG("new minor assigned %d\n", minor_id
);
221 if (new_minor
->type
== DRM_MINOR_LEGACY
)
222 drm_proc_cleanup(new_minor
, drm_proc_root
);
226 idr_remove(&drm_minors_idr
, minor_id
);
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.
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.
242 int drm_get_dev(struct pci_dev
*pdev
, const struct pci_device_id
*ent
,
243 struct drm_driver
*driver
)
245 struct drm_device
*dev
;
250 dev
= drm_calloc(1, sizeof(*dev
), DRM_MEM_STUB
);
254 ret
= pci_enable_device(pdev
);
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");
263 if ((ret
= drm_get_minor(dev
, &dev
->primary
, DRM_MINOR_LEGACY
)))
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
);
273 pci_disable_device(pdev
);
275 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
280 * Put a device minor number.
282 * \param dev device data structure
283 * \return always zero
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.
289 int drm_put_dev(struct drm_device
* dev
)
291 DRM_DEBUG("release primary %s\n", dev
->driver
->pci_driver
.name
);
294 drm_free(dev
->unique
, strlen(dev
->unique
) + 1, DRM_MEM_DRIVER
);
299 drm_free(dev
->devname
, strlen(dev
->devname
) + 1,
303 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
308 * Put a secondary minor number.
310 * \param sec_minor - structure to be released
311 * \return always zero
313 * Cleans up the proc resources. Not legal for this to be the
314 * last minor released.
317 int drm_put_minor(struct drm_minor
**minor_p
)
319 struct drm_minor
*minor
= *minor_p
;
320 DRM_DEBUG("release secondary minor %d\n", minor
->index
);
322 if (minor
->type
== DRM_MINOR_LEGACY
)
323 drm_proc_cleanup(minor
, drm_proc_root
);
324 drm_sysfs_device_remove(minor
);
326 idr_remove(&drm_minors_idr
, minor
->index
);