1 /* ioctl.c -- IOCTL processing for DRM -*- linux-c -*-
2 * Created: Fri Jan 8 09:01:26 1999 by faith@precisioninsight.com
3 * Revised: Fri Aug 20 09:27:02 1999 by faith@precisioninsight.com
5 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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:
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
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.
27 * $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/generic/ioctl.c,v 1.3 1999/08/30 13:05:00 faith Exp $
32 #define __NO_VERSION__
35 int drm_irq_busid(struct inode
*inode
, struct file
*filp
, unsigned int cmd
,
41 copy_from_user_ret(&p
, (drm_irq_busid_t
*)arg
, sizeof(p
), -EFAULT
);
42 dev
= pci_find_slot(p
.busnum
, PCI_DEVFN(p
.devnum
, p
.funcnum
));
43 if (dev
) p
.irq
= dev
->irq
;
45 DRM_DEBUG("%d:%d:%d => IRQ %d\n",
46 p
.busnum
, p
.devnum
, p
.funcnum
, p
.irq
);
47 copy_to_user_ret((drm_irq_busid_t
*)arg
, &p
, sizeof(p
), -EFAULT
);
51 int drm_getunique(struct inode
*inode
, struct file
*filp
, unsigned int cmd
,
54 drm_file_t
*priv
= filp
->private_data
;
55 drm_device_t
*dev
= priv
->dev
;
58 copy_from_user_ret(&u
, (drm_unique_t
*)arg
, sizeof(u
), -EFAULT
);
59 if (u
.unique_len
>= dev
->unique_len
) {
60 copy_to_user_ret(u
.unique
, dev
->unique
, dev
->unique_len
,
63 u
.unique_len
= dev
->unique_len
;
64 copy_to_user_ret((drm_unique_t
*)arg
, &u
, sizeof(u
), -EFAULT
);
68 int drm_setunique(struct inode
*inode
, struct file
*filp
, unsigned int cmd
,
71 drm_file_t
*priv
= filp
->private_data
;
72 drm_device_t
*dev
= priv
->dev
;
75 if (dev
->unique_len
|| dev
->unique
) return -EBUSY
;
77 copy_from_user_ret(&u
, (drm_unique_t
*)arg
, sizeof(u
), -EFAULT
);
78 if (!u
.unique_len
) return -EINVAL
;
80 dev
->unique_len
= u
.unique_len
;
81 dev
->unique
= drm_alloc(u
.unique_len
+ 1, DRM_MEM_DRIVER
);
82 copy_from_user_ret(dev
->unique
, u
.unique
, dev
->unique_len
,
84 dev
->unique
[dev
->unique_len
] = '\0';
86 dev
->devname
= drm_alloc(strlen(dev
->name
) + strlen(dev
->unique
) + 2,
88 sprintf(dev
->devname
, "%s@%s", dev
->name
, dev
->unique
);