3 * IOCTL processing for DRM
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com
12 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
13 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
14 * All Rights Reserved.
16 * Permission is hereby granted, free of charge, to any person obtaining a
17 * copy of this software and associated documentation files (the "Software"),
18 * to deal in the Software without restriction, including without limitation
19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20 * and/or sell copies of the Software, and to permit persons to whom the
21 * Software is furnished to do so, subject to the following conditions:
23 * The above copyright notice and this permission notice (including the next
24 * paragraph) shall be included in all copies or substantial portions of the
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
30 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
31 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
32 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
33 * OTHER DEALINGS IN THE SOFTWARE.
39 #include "linux/pci.h"
44 * \param inode device inode.
45 * \param file_priv DRM file private.
47 * \param arg user argument, pointing to a drm_unique structure.
48 * \return zero on success or a negative number on failure.
50 * Copies the bus id from drm_device::unique into user space.
52 int drm_getunique(struct drm_device
*dev
, void *data
,
53 struct drm_file
*file_priv
)
55 struct drm_unique
*u
= data
;
57 if (u
->unique_len
>= dev
->unique_len
) {
58 if (copy_to_user(u
->unique
, dev
->unique
, dev
->unique_len
))
61 u
->unique_len
= dev
->unique_len
;
69 * \param inode device inode.
70 * \param file_priv DRM file private.
72 * \param arg user argument, pointing to a drm_unique structure.
73 * \return zero on success or a negative number on failure.
75 * Copies the bus id from userspace into drm_device::unique, and verifies that
76 * it matches the device this DRM is attached to (EINVAL otherwise). Deprecated
77 * in interface version 1.1 and will return EBUSY when setversion has requested
78 * version 1.1 or greater.
80 int drm_setunique(struct drm_device
*dev
, void *data
,
81 struct drm_file
*file_priv
)
83 struct drm_unique
*u
= data
;
84 int domain
, bus
, slot
, func
, ret
;
86 if (dev
->unique_len
|| dev
->unique
)
89 if (!u
->unique_len
|| u
->unique_len
> 1024)
92 dev
->unique_len
= u
->unique_len
;
93 dev
->unique
= drm_alloc(u
->unique_len
+ 1, DRM_MEM_DRIVER
);
96 if (copy_from_user(dev
->unique
, u
->unique
, dev
->unique_len
))
99 dev
->unique
[dev
->unique_len
] = '\0';
102 drm_alloc(strlen(dev
->driver
->pci_driver
.name
) +
103 strlen(dev
->unique
) + 2, DRM_MEM_DRIVER
);
107 sprintf(dev
->devname
, "%s@%s", dev
->driver
->pci_driver
.name
,
110 /* Return error if the busid submitted doesn't match the device's actual
113 ret
= sscanf(dev
->unique
, "PCI:%d:%d:%d", &bus
, &slot
, &func
);
119 if ((domain
!= drm_get_pci_domain(dev
)) ||
120 (bus
!= dev
->pdev
->bus
->number
) ||
121 (slot
!= PCI_SLOT(dev
->pdev
->devfn
)) ||
122 (func
!= PCI_FUNC(dev
->pdev
->devfn
)))
128 static int drm_set_busid(struct drm_device
* dev
)
132 if (dev
->unique
!= NULL
)
135 dev
->unique_len
= 40;
136 dev
->unique
= drm_alloc(dev
->unique_len
+ 1, DRM_MEM_DRIVER
);
137 if (dev
->unique
== NULL
)
140 len
= snprintf(dev
->unique
, dev
->unique_len
, "pci:%04x:%02x:%02x.%d",
141 drm_get_pci_domain(dev
), dev
->pdev
->bus
->number
,
142 PCI_SLOT(dev
->pdev
->devfn
),
143 PCI_FUNC(dev
->pdev
->devfn
));
145 if (len
> dev
->unique_len
)
146 DRM_ERROR("Unique buffer overflowed\n");
149 drm_alloc(strlen(dev
->driver
->pci_driver
.name
) + dev
->unique_len
+
151 if (dev
->devname
== NULL
)
154 sprintf(dev
->devname
, "%s@%s", dev
->driver
->pci_driver
.name
,
161 * Get a mapping information.
163 * \param inode device inode.
164 * \param file_priv DRM file private.
165 * \param cmd command.
166 * \param arg user argument, pointing to a drm_map structure.
168 * \return zero on success or a negative number on failure.
170 * Searches for the mapping with the specified offset and copies its information
173 int drm_getmap(struct drm_device
*dev
, void *data
,
174 struct drm_file
*file_priv
)
176 struct drm_map
*map
= data
;
177 struct drm_map_list
*r_list
= NULL
;
178 struct list_head
*list
;
184 mutex_lock(&dev
->struct_mutex
);
186 mutex_unlock(&dev
->struct_mutex
);
191 list_for_each(list
, &dev
->maplist
) {
193 r_list
= list_entry(list
, struct drm_map_list
, head
);
198 if (!r_list
|| !r_list
->map
) {
199 mutex_unlock(&dev
->struct_mutex
);
203 map
->offset
= r_list
->map
->offset
;
204 map
->size
= r_list
->map
->size
;
205 map
->type
= r_list
->map
->type
;
206 map
->flags
= r_list
->map
->flags
;
207 map
->handle
= (void *)(unsigned long) r_list
->user_token
;
208 map
->mtrr
= r_list
->map
->mtrr
;
209 mutex_unlock(&dev
->struct_mutex
);
215 * Get client information.
217 * \param inode device inode.
218 * \param file_priv DRM file private.
219 * \param cmd command.
220 * \param arg user argument, pointing to a drm_client structure.
222 * \return zero on success or a negative number on failure.
224 * Searches for the client with the specified index and copies its information
227 int drm_getclient(struct drm_device
*dev
, void *data
,
228 struct drm_file
*file_priv
)
230 struct drm_client
*client
= data
;
236 mutex_lock(&dev
->struct_mutex
);
239 list_for_each_entry(pt
, &dev
->filelist
, lhead
) {
241 client
->auth
= pt
->authenticated
;
242 client
->pid
= pt
->pid
;
243 client
->uid
= pt
->uid
;
244 client
->magic
= pt
->magic
;
245 client
->iocs
= pt
->ioctl_count
;
246 mutex_unlock(&dev
->struct_mutex
);
251 mutex_unlock(&dev
->struct_mutex
);
257 * Get statistics information.
259 * \param inode device inode.
260 * \param file_priv DRM file private.
261 * \param cmd command.
262 * \param arg user argument, pointing to a drm_stats structure.
264 * \return zero on success or a negative number on failure.
266 int drm_getstats(struct drm_device
*dev
, void *data
,
267 struct drm_file
*file_priv
)
269 struct drm_stats
*stats
= data
;
272 memset(stats
, 0, sizeof(*stats
));
274 mutex_lock(&dev
->struct_mutex
);
276 for (i
= 0; i
< dev
->counters
; i
++) {
277 if (dev
->types
[i
] == _DRM_STAT_LOCK
)
278 stats
->data
[i
].value
=
279 (dev
->lock
.hw_lock
? dev
->lock
.hw_lock
->lock
: 0);
281 stats
->data
[i
].value
= atomic_read(&dev
->counts
[i
]);
282 stats
->data
[i
].type
= dev
->types
[i
];
285 stats
->count
= dev
->counters
;
287 mutex_unlock(&dev
->struct_mutex
);
295 * \param inode device inode.
296 * \param file_priv DRM file private.
297 * \param cmd command.
298 * \param arg user argument, pointing to a drm_lock structure.
299 * \return zero on success or negative number on failure.
301 * Sets the requested interface version
303 int drm_setversion(struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
)
305 struct drm_set_version
*sv
= data
;
306 int if_version
, retcode
= 0;
308 if (sv
->drm_di_major
!= -1) {
309 if (sv
->drm_di_major
!= DRM_IF_MAJOR
||
310 sv
->drm_di_minor
< 0 || sv
->drm_di_minor
> DRM_IF_MINOR
) {
314 if_version
= DRM_IF_VERSION(sv
->drm_di_major
,
316 dev
->if_version
= max(if_version
, dev
->if_version
);
317 if (sv
->drm_di_minor
>= 1) {
319 * Version 1.1 includes tying of DRM to specific device
325 if (sv
->drm_dd_major
!= -1) {
326 if (sv
->drm_dd_major
!= dev
->driver
->major
||
327 sv
->drm_dd_minor
< 0 || sv
->drm_dd_minor
>
328 dev
->driver
->minor
) {
333 if (dev
->driver
->set_version
)
334 dev
->driver
->set_version(dev
, sv
);
338 sv
->drm_di_major
= DRM_IF_MAJOR
;
339 sv
->drm_di_minor
= DRM_IF_MINOR
;
340 sv
->drm_dd_major
= dev
->driver
->major
;
341 sv
->drm_dd_minor
= dev
->driver
->minor
;
347 int drm_noop(struct drm_device
*dev
, void *data
,
348 struct drm_file
*file_priv
)