sound/core/ioctl32/rawmidi32.c

   1 /*
   2  *   32bit -> 64bit ioctl wrapper for raw MIDI 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/rawmidi.h>
  27 #include <asm/uaccess.h>
  28 #include "ioctl32.h"
  29
  30 struct sndrv_rawmidi_params32 {
  31         s32 stream;
  32         u32 buffer_size;
  33         u32 avail_min;
  34         unsigned int no_active_sensing; /* avoid bit-field */
  35         unsigned char reserved[16];
  36 } __attribute__((packed));
  37
  38 #define CVT_sndrv_rawmidi_params()\
  39 {\
  40         COPY(stream);\
  41         COPY(buffer_size);\
  42         COPY(avail_min);\
  43         COPY(no_active_sensing);\
  44 }
  45
  46 struct sndrv_rawmidi_status32 {
  47         s32 stream;
  48         struct compat_timespec tstamp;
  49         u32 avail;
  50         u32 xruns;
  51         unsigned char reserved[16];
  52 } __attribute__((packed));
  53
  54 #define CVT_sndrv_rawmidi_status()\
  55 {\
  56         COPY(stream);\
  57         COPY(tstamp.tv_sec);\
  58         COPY(tstamp.tv_nsec);\
  59         COPY(avail);\
  60         COPY(xruns);\
  61 }
  62
  63 DEFINE_ALSA_IOCTL(rawmidi_params);
  64 DEFINE_ALSA_IOCTL(rawmidi_status);
  65
  66 DEFINE_ALSA_IOCTL_ENTRY(rawmidi_params, rawmidi_params, SNDRV_RAWMIDI_IOCTL_PARAMS);
  67 DEFINE_ALSA_IOCTL_ENTRY(rawmidi_status, rawmidi_status, SNDRV_RAWMIDI_IOCTL_STATUS);
  68
  69 #define AP(x) snd_ioctl32_##x
  70
  71 enum {
  72         SNDRV_RAWMIDI_IOCTL_PARAMS32 = _IOWR('W', 0x10, struct sndrv_rawmidi_params32),
  73         SNDRV_RAWMIDI_IOCTL_STATUS32 = _IOWR('W', 0x20, struct sndrv_rawmidi_status32),
  74 };
  75
  76 struct ioctl32_mapper rawmidi_mappers[] = {
  77         MAP_COMPAT(SNDRV_RAWMIDI_IOCTL_PVERSION),
  78         MAP_COMPAT(SNDRV_RAWMIDI_IOCTL_INFO),
  79         { SNDRV_RAWMIDI_IOCTL_PARAMS32, AP(rawmidi_params) },
  80         { SNDRV_RAWMIDI_IOCTL_STATUS32, AP(rawmidi_status) },
  81         MAP_COMPAT(SNDRV_RAWMIDI_IOCTL_DROP),
  82         MAP_COMPAT(SNDRV_RAWMIDI_IOCTL_DRAIN),
  83
  84         MAP_COMPAT(SNDRV_CTL_IOCTL_RAWMIDI_NEXT_DEVICE),
  85         MAP_COMPAT(SNDRV_CTL_IOCTL_RAWMIDI_INFO),
  86         MAP_COMPAT(SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE),
  87
  88         { 0 },
  89 };