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_cards_limit
= 16; /* Enough for one machine */
40 unsigned int drm_debug
= 0; /* 1 to enable debug output */
41 EXPORT_SYMBOL(drm_debug
);
43 MODULE_AUTHOR(CORE_AUTHOR
);
44 MODULE_DESCRIPTION(CORE_DESC
);
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");
49 module_param_named(cards_limit
, drm_cards_limit
, int, 0444);
50 module_param_named(debug
, drm_debug
, int, 0600);
52 struct drm_head
**drm_heads
;
53 struct class *drm_class
;
54 struct proc_dir_entry
*drm_proc_root
;
56 static int drm_fill_in_dev(struct drm_device
* dev
, struct pci_dev
*pdev
,
57 const struct pci_device_id
*ent
,
58 struct drm_driver
*driver
)
62 INIT_LIST_HEAD(&dev
->filelist
);
63 INIT_LIST_HEAD(&dev
->ctxlist
);
64 INIT_LIST_HEAD(&dev
->vmalist
);
65 INIT_LIST_HEAD(&dev
->maplist
);
67 spin_lock_init(&dev
->count_lock
);
68 spin_lock_init(&dev
->drw_lock
);
69 spin_lock_init(&dev
->tasklet_lock
);
70 spin_lock_init(&dev
->lock
.spinlock
);
71 init_timer(&dev
->timer
);
72 mutex_init(&dev
->struct_mutex
);
73 mutex_init(&dev
->ctxlist_mutex
);
75 idr_init(&dev
->drw_idr
);
78 dev
->pci_device
= pdev
->device
;
79 dev
->pci_vendor
= pdev
->vendor
;
82 dev
->hose
= pdev
->sysdata
;
86 if (drm_ht_create(&dev
->map_hash
, 12)) {
90 /* the DRM has 6 basic counters */
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
;
101 if (drm_core_has_AGP(dev
)) {
102 if (drm_device_is_agp(dev
))
103 dev
->agp
= drm_agp_init(dev
);
104 if (drm_core_check_feature(dev
, DRIVER_REQUIRE_AGP
)
105 && (dev
->agp
== NULL
)) {
106 DRM_ERROR("Cannot initialize the agpgart module.\n");
108 goto error_out_unreg
;
110 if (drm_core_has_MTRR(dev
)) {
113 mtrr_add(dev
->agp
->agp_info
.aper_base
,
114 dev
->agp
->agp_info
.aper_size
*
115 1024 * 1024, MTRR_TYPE_WRCOMB
, 1);
119 if (dev
->driver
->load
)
120 if ((retcode
= dev
->driver
->load(dev
, ent
->driver_data
)))
121 goto error_out_unreg
;
123 retcode
= drm_ctxbitmap_init(dev
);
125 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
126 goto error_out_unreg
;
138 * Get a secondary minor number.
140 * \param dev device data structure
141 * \param sec-minor structure to hold the assigned minor
142 * \return negative number on failure.
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
148 static int drm_get_head(struct drm_device
* dev
, struct drm_head
* head
)
150 struct drm_head
**heads
= drm_heads
;
156 for (minor
= 0; minor
< drm_cards_limit
; minor
++, heads
++) {
159 *head
= (struct drm_head
) {
161 MKDEV(DRM_MAJOR
, minor
),.minor
= minor
,};
164 drm_proc_init(dev
, minor
, drm_proc_root
,
167 "DRM: Failed to initialize /proc/dri.\n");
171 ret
= drm_sysfs_device_add(dev
, head
);
174 "DRM: Error sysfs_device_add.\n");
179 DRM_DEBUG("new minor assigned %d\n", minor
);
183 DRM_ERROR("out of minors\n");
186 drm_proc_cleanup(minor
, drm_proc_root
, head
->dev_root
);
188 *head
= (struct drm_head
) {
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.
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.
204 int drm_get_dev(struct pci_dev
*pdev
, const struct pci_device_id
*ent
,
205 struct drm_driver
*driver
)
207 struct drm_device
*dev
;
212 dev
= drm_calloc(1, sizeof(*dev
), DRM_MEM_STUB
);
216 ret
= pci_enable_device(pdev
);
220 if ((ret
= drm_fill_in_dev(dev
, pdev
, ent
, driver
))) {
221 printk(KERN_ERR
"DRM: Fill_in_dev failed.\n");
224 if ((ret
= drm_get_head(dev
, &dev
->primary
)))
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
);
234 pci_disable_device(pdev
);
236 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
241 * Put a device minor number.
243 * \param dev device data structure
244 * \return always zero
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.
250 int drm_put_dev(struct drm_device
* dev
)
252 DRM_DEBUG("release primary %s\n", dev
->driver
->pci_driver
.name
);
255 drm_free(dev
->unique
, strlen(dev
->unique
) + 1, DRM_MEM_DRIVER
);
260 drm_free(dev
->devname
, strlen(dev
->devname
) + 1,
264 drm_free(dev
, sizeof(*dev
), DRM_MEM_STUB
);
269 * Put a secondary minor number.
271 * \param sec_minor - structure to be released
272 * \return always zero
274 * Cleans up the proc resources. Not legal for this to be the
275 * last minor released.
278 int drm_put_head(struct drm_head
* head
)
280 int minor
= head
->minor
;
282 DRM_DEBUG("release secondary minor %d\n", minor
);
284 drm_proc_cleanup(minor
, drm_proc_root
, head
->dev_root
);
285 drm_sysfs_device_remove(head
->dev
);
287 *head
= (struct drm_head
) {.dev
= NULL
};
289 drm_heads
[minor
] = NULL
;