blob: 5512f5373c52ece5ef82f4c54fc81865448ea69a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * 32bit -> 64bit ioctl wrapper for timer API
3 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
21/* This file included from timer.c */
22
23#include <linux/compat.h>
24
Takashi Iwai53d2f742005-11-17 13:56:05 +010025struct snd_timer_info32 {
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 u32 flags;
27 s32 card;
28 unsigned char id[64];
29 unsigned char name[80];
30 u32 reserved0;
31 u32 resolution;
32 unsigned char reserved[64];
33};
34
35static int snd_timer_user_info_compat(struct file *file,
Takashi Iwai53d2f742005-11-17 13:56:05 +010036 struct snd_timer_info32 __user *_info)
Linus Torvalds1da177e2005-04-16 15:20:36 -070037{
Takashi Iwai53d2f742005-11-17 13:56:05 +010038 struct snd_timer_user *tu;
39 struct snd_timer_info32 info;
40 struct snd_timer *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42 tu = file->private_data;
43 snd_assert(tu->timeri != NULL, return -ENXIO);
44 t = tu->timeri->timer;
45 snd_assert(t != NULL, return -ENXIO);
46 memset(&info, 0, sizeof(info));
47 info.card = t->card ? t->card->number : -1;
48 if (t->hw.flags & SNDRV_TIMER_HW_SLAVE)
49 info.flags |= SNDRV_TIMER_FLG_SLAVE;
50 strlcpy(info.id, t->id, sizeof(info.id));
51 strlcpy(info.name, t->name, sizeof(info.name));
52 info.resolution = t->hw.resolution;
53 if (copy_to_user(_info, &info, sizeof(*_info)))
54 return -EFAULT;
55 return 0;
56}
57
Takashi Iwai53d2f742005-11-17 13:56:05 +010058struct snd_timer_status32 {
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 struct compat_timespec tstamp;
60 u32 resolution;
61 u32 lost;
62 u32 overrun;
63 u32 queue;
64 unsigned char reserved[64];
65};
66
67static int snd_timer_user_status_compat(struct file *file,
Takashi Iwai53d2f742005-11-17 13:56:05 +010068 struct snd_timer_status32 __user *_status)
Linus Torvalds1da177e2005-04-16 15:20:36 -070069{
Takashi Iwai53d2f742005-11-17 13:56:05 +010070 struct snd_timer_user *tu;
71 struct snd_timer_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
73 tu = file->private_data;
74 snd_assert(tu->timeri != NULL, return -ENXIO);
75 memset(&status, 0, sizeof(status));
76 status.tstamp = tu->tstamp;
77 status.resolution = snd_timer_resolution(tu->timeri);
78 status.lost = tu->timeri->lost;
79 status.overrun = tu->overrun;
80 spin_lock_irq(&tu->qlock);
81 status.queue = tu->qused;
82 spin_unlock_irq(&tu->qlock);
83 if (copy_to_user(_status, &status, sizeof(status)))
84 return -EFAULT;
85 return 0;
86}
87
88/*
89 */
90
91enum {
Takashi Iwai53d2f742005-11-17 13:56:05 +010092 SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct snd_timer_info32),
93 SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct snd_timer_status32),
Linus Torvalds1da177e2005-04-16 15:20:36 -070094};
95
96static long snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
97{
98 void __user *argp = compat_ptr(arg);
99
100 switch (cmd) {
101 case SNDRV_TIMER_IOCTL_PVERSION:
102 case SNDRV_TIMER_IOCTL_TREAD:
103 case SNDRV_TIMER_IOCTL_GINFO:
104 case SNDRV_TIMER_IOCTL_GPARAMS:
105 case SNDRV_TIMER_IOCTL_GSTATUS:
106 case SNDRV_TIMER_IOCTL_SELECT:
107 case SNDRV_TIMER_IOCTL_PARAMS:
108 case SNDRV_TIMER_IOCTL_START:
Takashi Iwai8c50b372005-05-15 15:43:54 +0200109 case SNDRV_TIMER_IOCTL_START_OLD:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 case SNDRV_TIMER_IOCTL_STOP:
Takashi Iwai8c50b372005-05-15 15:43:54 +0200111 case SNDRV_TIMER_IOCTL_STOP_OLD:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 case SNDRV_TIMER_IOCTL_CONTINUE:
Takashi Iwai8c50b372005-05-15 15:43:54 +0200113 case SNDRV_TIMER_IOCTL_CONTINUE_OLD:
Takashi Iwai15790a62005-05-15 15:04:14 +0200114 case SNDRV_TIMER_IOCTL_PAUSE:
Takashi Iwai8c50b372005-05-15 15:43:54 +0200115 case SNDRV_TIMER_IOCTL_PAUSE_OLD:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 case SNDRV_TIMER_IOCTL_NEXT_DEVICE:
117 return snd_timer_user_ioctl(file, cmd, (unsigned long)argp);
118 case SNDRV_TIMER_IOCTL_INFO32:
119 return snd_timer_user_info_compat(file, argp);
120 case SNDRV_TIMER_IOCTL_STATUS32:
121 return snd_timer_user_status_compat(file, argp);
122 }
123 return -ENOIOCTLCMD;
124}