1 /* ioctl.c -- IOCTL processing for DRM -*- linux-c -*-
2 * Created: Fri Jan 8 09:01:26 1999 by faith@precisioninsight.com
3 *
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
26 *
27 * Authors:
28 * Rickard E. (Rik) Faith <faith@valinux.com>
29 *
30 */
31
32 #define __NO_VERSION__
33 #include "drmP.h"
34
drm_irq_busid(struct inode * inode,struct file * filp,unsigned int cmd,unsigned long arg)35 int drm_irq_busid(struct inode *inode, struct file *filp, unsigned int cmd,
36 unsigned long arg)
37 {
38 drm_irq_busid_t p;
39 struct pci_dev *dev;
40
41 if (copy_from_user(&p, (drm_irq_busid_t *)arg, sizeof(p)))
42 return -EFAULT;
43 dev = pci_find_slot(p.busnum, PCI_DEVFN(p.devnum, p.funcnum));
44 if (dev) p.irq = dev->irq;
45 else p.irq = 0;
46 DRM_DEBUG("%d:%d:%d => IRQ %d\n",
47 p.busnum, p.devnum, p.funcnum, p.irq);
48 if (copy_to_user((drm_irq_busid_t *)arg, &p, sizeof(p)))
49 return -EFAULT;
50 return 0;
51 }
52
drm_getunique(struct inode * inode,struct file * filp,unsigned int cmd,unsigned long arg)53 int drm_getunique(struct inode *inode, struct file *filp, unsigned int cmd,
54 unsigned long arg)
55 {
56 drm_file_t *priv = filp->private_data;
57 drm_device_t *dev = priv->dev;
58 drm_unique_t u;
59
60 if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
61 return -EFAULT;
62 if (u.unique_len >= dev->unique_len) {
63 if (copy_to_user(u.unique, dev->unique, dev->unique_len))
64 return -EFAULT;
65 }
66 u.unique_len = dev->unique_len;
67 if (copy_to_user((drm_unique_t *)arg, &u, sizeof(u)))
68 return -EFAULT;
69 return 0;
70 }
71
drm_setunique(struct inode * inode,struct file * filp,unsigned int cmd,unsigned long arg)72 int drm_setunique(struct inode *inode, struct file *filp, unsigned int cmd,
73 unsigned long arg)
74 {
75 drm_file_t *priv = filp->private_data;
76 drm_device_t *dev = priv->dev;
77 drm_unique_t u;
78
79 if (dev->unique_len || dev->unique)
80 return -EBUSY;
81
82 if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
83 return -EFAULT;
84
85 if (!u.unique_len || u.unique_len > 1024)
86 return -EINVAL;
87
88 dev->unique_len = u.unique_len;
89 dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
90 if (copy_from_user(dev->unique, u.unique, dev->unique_len))
91 return -EFAULT;
92 dev->unique[dev->unique_len] = '\0';
93
94 dev->devname = drm_alloc(strlen(dev->name) + strlen(dev->unique) + 2,
95 DRM_MEM_DRIVER);
96 sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
97
98 return 0;
99 }
100