Exemple #1
0
static inline unsigned int calc_linear_pos(struct via82xx_modem *chip,
					   struct viadev *viadev,
					   unsigned int idx,
					   unsigned int count)
{
	unsigned int size, res;

	size = viadev->idx_table[idx].size;
	res = viadev->idx_table[idx].offset + size - count;

	/* check the validity of the calculated position */
	if (size < count) {
		dev_err(chip->card->dev,
			"invalid via82xx_cur_ptr (size = %d, count = %d)\n",
			   (int)size, (int)count);
		res = viadev->lastpos;
	} else if (check_invalid_pos(viadev, res)) {
#ifdef POINTER_DEBUG
		dev_dbg(chip->card->dev,
			"fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
			idx, viadev->tbl_entries, viadev->lastpos,
		       viadev->bufsize2, viadev->idx_table[idx].offset,
		       viadev->idx_table[idx].size, count);
#endif
		if (count && size < count) {
			dev_dbg(chip->card->dev,
				"invalid via82xx_cur_ptr, using last valid pointer\n");
			res = viadev->lastpos;
		} else {
			if (! count)
				/* bogus count 0 on the DMA boundary? */
				res = viadev->idx_table[idx].offset;
			else
				/* count register returns full size
				 * when end of buffer is reached
				 */
				res = viadev->idx_table[idx].offset + size;
			if (check_invalid_pos(viadev, res)) {
				dev_dbg(chip->card->dev,
					"invalid via82xx_cur_ptr (2), using last valid pointer\n");
				res = viadev->lastpos;
			}
		}
	}
	viadev->lastpos = res; /* remember the last position */
	if (res >= viadev->bufsize)
		res -= viadev->bufsize;
	return res;
}
static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
					   unsigned int count)
{
	unsigned int size, res;

	size = viadev->idx_table[idx].size;
	res = viadev->idx_table[idx].offset + size - count;

	/*                                               */
	if (size < count) {
		snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
			   (int)size, (int)count);
		res = viadev->lastpos;
	} else if (check_invalid_pos(viadev, res)) {
#ifdef POINTER_DEBUG
		printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
		       "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
		       "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos,
		       viadev->bufsize2, viadev->idx_table[idx].offset,
		       viadev->idx_table[idx].size, count);
#endif
		if (count && size < count) {
			snd_printd(KERN_ERR "invalid via82xx_cur_ptr, "
				   "using last valid pointer\n");
			res = viadev->lastpos;
		} else {
			if (! count)
				/*                                    */
				res = viadev->idx_table[idx].offset;
			else
				/*                                 
                                    
     */
				res = viadev->idx_table[idx].offset + size;
			if (check_invalid_pos(viadev, res)) {
				snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
					   "using last valid pointer\n");
				res = viadev->lastpos;
			}
		}
	}
	viadev->lastpos = res; /*                            */
	if (res >= viadev->bufsize)
		res -= viadev->bufsize;
	return res;
}