/*
   *   32bit -> 64bit ioctl wrapper for hwdep API
   *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   */
  
  /* This file is included from hwdep.c */
  
  #include <linux/compat.h>
  
  struct snd_hwdep_dsp_image32 {
  	u32 index;
  	unsigned char name[64];
  	u32 image;	/* pointer */
  	u32 length;
  	u32 driver_data;
  } /* don't set packed attribute here */;
  
  static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw,
  				     struct snd_hwdep_dsp_image32 __user *src)
  {
  	struct snd_hwdep_dsp_image __user *dst;
  	compat_caddr_t ptr;
  	u32 val;
  
  	dst = compat_alloc_user_space(sizeof(*dst));
  
  	/* index and name */
  	if (copy_in_user(dst, src, 4 + 64))
  		return -EFAULT;
  	if (get_user(ptr, &src->image) ||
  	    put_user(compat_ptr(ptr), &dst->image))
  		return -EFAULT;
  	if (get_user(val, &src->length) ||
  	    put_user(val, &dst->length))
  		return -EFAULT;
  	if (get_user(val, &src->driver_data) ||
  	    put_user(val, &dst->driver_data))
  		return -EFAULT;
  
  	return snd_hwdep_dsp_load(hw, dst);
  }
  
  enum {
  	SNDRV_HWDEP_IOCTL_DSP_LOAD32   = _IOW('H', 0x03, struct snd_hwdep_dsp_image32)
  };
  
  static long snd_hwdep_ioctl_compat(struct file * file, unsigned int cmd,
  				   unsigned long arg)
  {
  	struct snd_hwdep *hw = file->private_data;
  	void __user *argp = compat_ptr(arg);
  	switch (cmd) {
  	case SNDRV_HWDEP_IOCTL_PVERSION:
  	case SNDRV_HWDEP_IOCTL_INFO:
  	case SNDRV_HWDEP_IOCTL_DSP_STATUS:
  		return snd_hwdep_ioctl(file, cmd, (unsigned long)argp);
  	case SNDRV_HWDEP_IOCTL_DSP_LOAD32:
  		return snd_hwdep_dsp_load_compat(hw, argp);
  	}
  	if (hw->ops.ioctl_compat)
  		return hw->ops.ioctl_compat(hw, file, cmd, arg);
  	return -ENOIOCTLCMD;
  }