63 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)  argument
204 struct viadev {  struct
235 	struct viadev devs[VIA_MAX_MODEM_DEVS];  argument
263 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,  in build_via_table()
339 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,  in clean_via_table()
453 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)  in snd_via82xx_channel_reset()  argument
456 	     VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_channel_reset()
457 	inb(VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_channel_reset()
460 	outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_channel_reset()
462 	outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));  in snd_via82xx_channel_reset()
463 	outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */  in snd_via82xx_channel_reset()
465 	viadev->lastpos = 0;  in snd_via82xx_channel_reset()
488 		struct viadev *viadev = &chip->devs[i];  in snd_via82xx_interrupt()  local
489 		unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));  in snd_via82xx_interrupt()
493 		if (viadev->substream && viadev->running) {  in snd_via82xx_interrupt()
495 			snd_pcm_period_elapsed(viadev->substream);  in snd_via82xx_interrupt()
498 		outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */  in snd_via82xx_interrupt()
514 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_pcm_trigger()  local
521 		viadev->running = 1;  in snd_via82xx_pcm_trigger()
525 		viadev->running = 0;  in snd_via82xx_pcm_trigger()
529 		viadev->running = 0;  in snd_via82xx_pcm_trigger()
532 		viadev->running = 1;  in snd_via82xx_pcm_trigger()
537 	outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));  in snd_via82xx_pcm_trigger()
539 		snd_via82xx_channel_reset(chip, viadev);  in snd_via82xx_pcm_trigger()
551 #define check_invalid_pos(viadev,pos) \  argument
552 	((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
553 				     viadev->lastpos < viadev->bufsize2))
556 					   struct viadev *viadev,  in calc_linear_pos()  argument
562 	size = viadev->idx_table[idx].size;  in calc_linear_pos()
563 	res = viadev->idx_table[idx].offset + size - count;  in calc_linear_pos()
570 		res = viadev->lastpos;  in calc_linear_pos()
571 	} else if (check_invalid_pos(viadev, res)) {  in calc_linear_pos()
575 			idx, viadev->tbl_entries, viadev->lastpos,  in calc_linear_pos()
576 		       viadev->bufsize2, viadev->idx_table[idx].offset,  in calc_linear_pos()
577 		       viadev->idx_table[idx].size, count);  in calc_linear_pos()
582 			res = viadev->lastpos;  in calc_linear_pos()
586 				res = viadev->idx_table[idx].offset;  in calc_linear_pos()
591 				res = viadev->idx_table[idx].offset + size;  in calc_linear_pos()
592 			if (check_invalid_pos(viadev, res)) {  in calc_linear_pos()
595 				res = viadev->lastpos;  in calc_linear_pos()
599 	viadev->lastpos = res; /* remember the last position */  in calc_linear_pos()
600 	if (res >= viadev->bufsize)  in calc_linear_pos()
601 		res -= viadev->bufsize;  in calc_linear_pos()
611 	struct viadev *viadev = substream->runtime->private_data;  in snd_via686_pcm_pointer()  local
614 	if (snd_BUG_ON(!viadev->tbl_entries))  in snd_via686_pcm_pointer()
616 	if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))  in snd_via686_pcm_pointer()
620 	count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;  in snd_via686_pcm_pointer()
624 	ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));  in snd_via686_pcm_pointer()
625 	if (ptr <= (unsigned int)viadev->table.addr)  in snd_via686_pcm_pointer()
628 		idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %  in snd_via686_pcm_pointer()
629 			viadev->tbl_entries;  in snd_via686_pcm_pointer()
630 	res = calc_linear_pos(chip, viadev, idx, count);  in snd_via686_pcm_pointer()
644 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_hw_params()  local
647 	err = build_via_table(viadev, substream, chip->pci,  in snd_via82xx_hw_params()
666 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_hw_free()  local
668 	clean_via_table(viadev, substream, chip->pci);  in snd_via82xx_hw_free()
676 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)  in snd_via82xx_set_table_ptr()  argument
679 	outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));  in snd_via82xx_set_table_ptr()
690 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_pcm_prepare()  local
692 	snd_via82xx_channel_reset(chip, viadev);  in snd_via82xx_pcm_prepare()
694 	snd_via82xx_set_table_ptr(chip, viadev);  in snd_via82xx_pcm_prepare()
696 	     VIADEV_REG(viadev, OFFSET_TYPE));  in snd_via82xx_pcm_prepare()
728 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,  in snd_via82xx_modem_pcm_open()  argument
753 	runtime->private_data = viadev;  in snd_via82xx_modem_pcm_open()
754 	viadev->substream = substream;  in snd_via82xx_modem_pcm_open()
766 	struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];  in snd_via82xx_playback_open()  local
768 	return snd_via82xx_modem_pcm_open(chip, viadev, substream);  in snd_via82xx_playback_open()
777 	struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];  in snd_via82xx_capture_open()  local
779 	return snd_via82xx_modem_pcm_open(chip, viadev, substream);  in snd_via82xx_capture_open()
787 	struct viadev *viadev = substream->runtime->private_data;  in snd_via82xx_pcm_close()  local
789 	viadev->substream = NULL;  in snd_via82xx_pcm_close()