78 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)  argument
219 struct viadev {  struct
250 	struct viadev devs[VIA_MAX_MODEM_DEVS];  argument
278 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,  in build_via_table()
350 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,  in clean_via_table()
463 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)  in snd_via82xx_channel_reset()  argument
466 	     VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_channel_reset()
467 	inb(VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_channel_reset()
470 	outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_channel_reset()
472 	outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));  in snd_via82xx_channel_reset()
473 	outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */  in snd_via82xx_channel_reset()
475 	viadev->lastpos = 0;  in snd_via82xx_channel_reset()
498 		struct viadev *viadev = &chip->devs[i];  in snd_via82xx_interrupt()  local
499 		unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));  in snd_via82xx_interrupt()
503 		if (viadev->substream && viadev->running) {  in snd_via82xx_interrupt()
505 			snd_pcm_period_elapsed(viadev->substream);  in snd_via82xx_interrupt()
508 		outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */  in snd_via82xx_interrupt()
524 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_pcm_trigger()  local
531 		viadev->running = 1;  in snd_via82xx_pcm_trigger()
535 		viadev->running = 0;  in snd_via82xx_pcm_trigger()
539 		viadev->running = 0;  in snd_via82xx_pcm_trigger()
542 		viadev->running = 1;  in snd_via82xx_pcm_trigger()
547 	outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_pcm_trigger()
549 		snd_via82xx_channel_reset(chip, viadev);  in snd_via82xx_pcm_trigger()
561 #define check_invalid_pos(viadev,pos) \  argument
562 	((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
563 				     viadev->lastpos < viadev->bufsize2))
566 					   struct viadev *viadev,  in calc_linear_pos()  argument
572 	size = viadev->idx_table[idx].size;  in calc_linear_pos()
573 	res = viadev->idx_table[idx].offset + size - count;  in calc_linear_pos()
580 		res = viadev->lastpos;  in calc_linear_pos()
581 	} else if (check_invalid_pos(viadev, res)) {  in calc_linear_pos()
585 			idx, viadev->tbl_entries, viadev->lastpos,  in calc_linear_pos()
586 		       viadev->bufsize2, viadev->idx_table[idx].offset,  in calc_linear_pos()
587 		       viadev->idx_table[idx].size, count);  in calc_linear_pos()
592 			res = viadev->lastpos;  in calc_linear_pos()
596 				res = viadev->idx_table[idx].offset;  in calc_linear_pos()
601 				res = viadev->idx_table[idx].offset + size;  in calc_linear_pos()
602 			if (check_invalid_pos(viadev, res)) {  in calc_linear_pos()
605 				res = viadev->lastpos;  in calc_linear_pos()
609 	viadev->lastpos = res; /* remember the last position */  in calc_linear_pos()
610 	if (res >= viadev->bufsize)  in calc_linear_pos()
611 		res -= viadev->bufsize;  in calc_linear_pos()
621 	struct viadev *viadev = substream->runtime->private_data;  in snd_via686_pcm_pointer()  local
624 	if (snd_BUG_ON(!viadev->tbl_entries))  in snd_via686_pcm_pointer()
626 	if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))  in snd_via686_pcm_pointer()
630 	count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;  in snd_via686_pcm_pointer()
634 	ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));  in snd_via686_pcm_pointer()
635 	if (ptr <= (unsigned int)viadev->table.addr)  in snd_via686_pcm_pointer()
638 		idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %  in snd_via686_pcm_pointer()
639 			viadev->tbl_entries;  in snd_via686_pcm_pointer()
640 	res = calc_linear_pos(chip, viadev, idx, count);  in snd_via686_pcm_pointer()
654 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_hw_params()  local
660 	err = build_via_table(viadev, substream, chip->pci,  in snd_via82xx_hw_params()
679 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_hw_free()  local
681 	clean_via_table(viadev, substream, chip->pci);  in snd_via82xx_hw_free()
690 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)  in snd_via82xx_set_table_ptr()  argument
693 	outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));  in snd_via82xx_set_table_ptr()
704 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_pcm_prepare()  local
706 	snd_via82xx_channel_reset(chip, viadev);  in snd_via82xx_pcm_prepare()
708 	snd_via82xx_set_table_ptr(chip, viadev);  in snd_via82xx_pcm_prepare()
710 	     VIADEV_REG(viadev, OFFSET_TYPE));  in snd_via82xx_pcm_prepare()
742 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,  in snd_via82xx_modem_pcm_open()  argument
765 	runtime->private_data = viadev;  in snd_via82xx_modem_pcm_open()
766 	viadev->substream = substream;  in snd_via82xx_modem_pcm_open()
778 	struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];  in snd_via82xx_playback_open()  local
780 	return snd_via82xx_modem_pcm_open(chip, viadev, substream);  in snd_via82xx_playback_open()
789 	struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];  in snd_via82xx_capture_open()  local
791 	return snd_via82xx_modem_pcm_open(chip, viadev, substream);  in snd_via82xx_capture_open()
799 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_pcm_close()  local
801 	viadev->substream = NULL;  in snd_via82xx_pcm_close()