sound/core/ioctl32/timer32.c

   1 /*
   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 #include <sound/driver.h>
  22 #include <linux/time.h>
  23 #include <linux/fs.h>
  24 #include <linux/compat.h>
  25 #include <sound/core.h>
  26 #include <sound/timer.h>
  27 #include <asm/uaccess.h>
  28 #include "ioctl32.h"
  29
  30 struct sndrv_timer_info32 {
  31         u32 flags;
  32         s32 card;
  33         unsigned char id[64];
  34         unsigned char name[80];
  35         u32 reserved0;
  36         u32 resolution;
  37         unsigned char reserved[64];
  38 };
  39
  40 #define CVT_sndrv_timer_info()\
  41 {\
  42         COPY(flags);\
  43         COPY(card);\
  44         memcpy(dst->id, src->id, sizeof(src->id));\
  45         memcpy(dst->name, src->name, sizeof(src->name));\
  46         COPY(resolution);\
  47 }
  48
  49 struct sndrv_timer_status32 {
  50         struct compat_timespec tstamp;
  51         u32 resolution;
  52         u32 lost;
  53         u32 overrun;
  54         u32 queue;
  55         unsigned char reserved[64];
  56 };
  57
  58 #define CVT_sndrv_timer_status()\
  59 {\
  60         COPY(tstamp.tv_sec);\
  61         COPY(tstamp.tv_nsec);\
  62         COPY(resolution);\
  63         COPY(lost);\
  64         COPY(overrun);\
  65         COPY(queue);\
  66 }
  67
  68 DEFINE_ALSA_IOCTL(timer_info);
  69 DEFINE_ALSA_IOCTL(timer_status);
  70
  71 DEFINE_ALSA_IOCTL_ENTRY(timer_info, timer_info, SNDRV_TIMER_IOCTL_INFO);
  72 DEFINE_ALSA_IOCTL_ENTRY(timer_status, timer_status, SNDRV_TIMER_IOCTL_STATUS);
  73
  74 /*
  75  */
  76
  77 #define AP(x) snd_ioctl32_##x
  78
  79 enum {
  80         SNDRV_TIMER_IOCTL_INFO32 = _IOR('T', 0x11, struct sndrv_timer_info32),
  81         SNDRV_TIMER_IOCTL_STATUS32 = _IOW('T', 0x14, struct sndrv_timer_status32),
  82 };
  83
  84 struct ioctl32_mapper timer_mappers[] = {
  85         MAP_COMPAT(SNDRV_TIMER_IOCTL_PVERSION),
  86         MAP_COMPAT(SNDRV_TIMER_IOCTL_NEXT_DEVICE),
  87         MAP_COMPAT(SNDRV_TIMER_IOCTL_SELECT),
  88         { SNDRV_TIMER_IOCTL_INFO32, AP(timer_info) },
  89         MAP_COMPAT(SNDRV_TIMER_IOCTL_PARAMS),
  90         { SNDRV_TIMER_IOCTL_STATUS32, AP(timer_status) },
  91 #if 0
  92         /* ** FIXME **
  93          * The following four entries are disabled because they conflict
  94          * with the TCOC* definitions.
  95          * Unfortunately, the current ioctl32 wrapper uses a single
  96          * hash table for all devices.  Once when the wrapper is fixed
  97          * with the table based on devices, they'll be back again.
  98          */
  99         MAP_COMPAT(SNDRV_TIMER_IOCTL_START),
 100         MAP_COMPAT(SNDRV_TIMER_IOCTL_STOP),
 101         MAP_COMPAT(SNDRV_TIMER_IOCTL_CONTINUE),
 102         MAP_COMPAT(SNDRV_TIMER_IOCTL_PAUSE),
 103 #endif
 104         { 0 },
 105 };