[deliverable/linux.git] / sound / isa / gus / gus_irq.c

/*
 *  Routine for IRQ handling from GF1/InterWave chip
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   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
 *
 */

#include <sound/core.h>
#include <sound/info.h>
#include <sound/gus.h>

#ifdef CONFIG_SND_DEBUG
#define STAT_ADD(x)	((x)++)
#else
#define STAT_ADD(x)	while (0) { ; }
#endif

irqreturn_t snd_gus_interrupt(int irq, void *dev_id)
{
	struct snd_gus_card * gus = dev_id;
	unsigned char status;
	int loop = 100;
	int handled = 0;

__again:
	status = inb(gus->gf1.reg_irqstat);
	if (status == 0)
		return IRQ_RETVAL(handled);
	handled = 1;
	/* snd_printk(KERN_DEBUG "IRQ: status = 0x%x\n", status); */
	if (status & 0x02) {
		STAT_ADD(gus->gf1.interrupt_stat_midi_in);
		if (gus->gf1.interrupt_handler_midi_in)
			gus->gf1.interrupt_handler_midi_in(gus);
	}
	if (status & 0x01) {
		STAT_ADD(gus->gf1.interrupt_stat_midi_out);
		if (gus->gf1.interrupt_handler_midi_out)
			gus->gf1.interrupt_handler_midi_out(gus);
	}
	if (status & (0x20 | 0x40)) {
		unsigned int already, _current_;
		unsigned char voice_status, voice;
		struct snd_gus_voice *pvoice;

		already = 0;
		while (((voice_status = snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ)) & 0xc0) != 0xc0) {
			voice = voice_status & 0x1f;
			_current_ = 1 << voice;
			if (already & _current_)
				continue;	/* multi request */
			already |= _current_;	/* mark request */
#if 0
			printk(KERN_DEBUG "voice = %i, voice_status = 0x%x, "
			       "voice_verify = %i\n",
			       voice, voice_status, inb(GUSP(gus, GF1PAGE)));
#endif
			pvoice = &gus->gf1.voices[voice]; 
			if (pvoice->use) {
				if (!(voice_status & 0x80)) {	/* voice position IRQ */
					STAT_ADD(pvoice->interrupt_stat_wave);
					pvoice->handler_wave(gus, pvoice);
				}
				if (!(voice_status & 0x40)) {	/* volume ramp IRQ */
					STAT_ADD(pvoice->interrupt_stat_volume);
					pvoice->handler_volume(gus, pvoice);
				}
			} else {
				STAT_ADD(gus->gf1.interrupt_stat_voice_lost);
				snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
				snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
			}
		}
	}
	if (status & 0x04) {
		STAT_ADD(gus->gf1.interrupt_stat_timer1);
		if (gus->gf1.interrupt_handler_timer1)
			gus->gf1.interrupt_handler_timer1(gus);
	}
	if (status & 0x08) {
		STAT_ADD(gus->gf1.interrupt_stat_timer2);
		if (gus->gf1.interrupt_handler_timer2)
			gus->gf1.interrupt_handler_timer2(gus);
	}
	if (status & 0x80) {
		if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL) & 0x40) {
			STAT_ADD(gus->gf1.interrupt_stat_dma_write);
			if (gus->gf1.interrupt_handler_dma_write)
				gus->gf1.interrupt_handler_dma_write(gus);
		}
		if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL) & 0x40) {
			STAT_ADD(gus->gf1.interrupt_stat_dma_read);
			if (gus->gf1.interrupt_handler_dma_read)
				gus->gf1.interrupt_handler_dma_read(gus);
		}
	}
	if (--loop > 0)
		goto __again;
	return IRQ_NONE;
}

#ifdef CONFIG_SND_DEBUG
static void snd_gus_irq_info_read(struct snd_info_entry *entry, 
				  struct snd_info_buffer *buffer)
{
	struct snd_gus_card *gus;
	struct snd_gus_voice *pvoice;
	int idx;

	gus = entry->private_data;
	snd_iprintf(buffer, "midi out = %u\n", gus->gf1.interrupt_stat_midi_out);
	snd_iprintf(buffer, "midi in = %u\n", gus->gf1.interrupt_stat_midi_in);
	snd_iprintf(buffer, "timer1 = %u\n", gus->gf1.interrupt_stat_timer1);
	snd_iprintf(buffer, "timer2 = %u\n", gus->gf1.interrupt_stat_timer2);
	snd_iprintf(buffer, "dma write = %u\n", gus->gf1.interrupt_stat_dma_write);
	snd_iprintf(buffer, "dma read = %u\n", gus->gf1.interrupt_stat_dma_read);
	snd_iprintf(buffer, "voice lost = %u\n", gus->gf1.interrupt_stat_voice_lost);
	for (idx = 0; idx < 32; idx++) {
		pvoice = &gus->gf1.voices[idx];
		snd_iprintf(buffer, "voice %i: wave = %u, volume = %u\n",
					idx,
					pvoice->interrupt_stat_wave,
					pvoice->interrupt_stat_volume);
	}
}

void snd_gus_irq_profile_init(struct snd_gus_card *gus)
{
	struct snd_info_entry *entry;

	if (! snd_card_proc_new(gus->card, "gusirq", &entry))
		snd_info_set_text_ops(entry, gus, snd_gus_irq_info_read);
}

#endif
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Routine for IRQ handling from GF1/InterWave chip
c1017a4c	3	* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	4	*
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*
	20	*/
	21
1da177e4 LT	22	#include <sound/core.h>
	23	#include <sound/info.h>
	24	#include <sound/gus.h>
	25
	26	#ifdef CONFIG_SND_DEBUG
	27	#define STAT_ADD(x) ((x)++)
	28	#else
	29	#define STAT_ADD(x) while (0) { ; }
	30	#endif
	31
7d12e780	32	irqreturn_t snd_gus_interrupt(int irq, void *dev_id)
1da177e4	33	{
5e2da206	34	struct snd_gus_card * gus = dev_id;
1da177e4 LT	35	unsigned char status;
	36	int loop = 100;
	37	int handled = 0;
	38
	39	__again:
	40	status = inb(gus->gf1.reg_irqstat);
	41	if (status == 0)
	42	return IRQ_RETVAL(handled);
	43	handled = 1;
91f05060	44	/* snd_printk(KERN_DEBUG "IRQ: status = 0x%x\n", status); */
1da177e4 LT	45	if (status & 0x02) {
1da177e4 LT	46	STAT_ADD(gus->gf1.interrupt_stat_midi_in);
c2cbdbb1 IM	47	if (gus->gf1.interrupt_handler_midi_in)
c2cbdbb1 IM	48	gus->gf1.interrupt_handler_midi_in(gus);
1da177e4 LT	49	}
	50	if (status & 0x01) {
	51	STAT_ADD(gus->gf1.interrupt_stat_midi_out);
c2cbdbb1 IM	52	if (gus->gf1.interrupt_handler_midi_out)
c2cbdbb1 IM	53	gus->gf1.interrupt_handler_midi_out(gus);
1da177e4 LT	54	}
	55	if (status & (0x20 \| 0x40)) {
	56	unsigned int already, _current_;
	57	unsigned char voice_status, voice;
5e2da206	58	struct snd_gus_voice *pvoice;
1da177e4 LT	59
	60	already = 0;
	61	while (((voice_status = snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ)) & 0xc0) != 0xc0) {
	62	voice = voice_status & 0x1f;
	63	_current_ = 1 << voice;
	64	if (already & _current_)
	65	continue; /* multi request */
	66	already \|= _current_; /* mark request */
	67	#if 0
91f05060 TI	68	printk(KERN_DEBUG "voice = %i, voice_status = 0x%x, "
	69	"voice_verify = %i\n",
	70	voice, voice_status, inb(GUSP(gus, GF1PAGE)));
1da177e4 LT	71	#endif
	72	pvoice = &gus->gf1.voices[voice];
	73	if (pvoice->use) {
	74	if (!(voice_status & 0x80)) { /* voice position IRQ */
	75	STAT_ADD(pvoice->interrupt_stat_wave);
	76	pvoice->handler_wave(gus, pvoice);
	77	}
	78	if (!(voice_status & 0x40)) { /* volume ramp IRQ */
	79	STAT_ADD(pvoice->interrupt_stat_volume);
	80	pvoice->handler_volume(gus, pvoice);
	81	}
	82	} else {
	83	STAT_ADD(gus->gf1.interrupt_stat_voice_lost);
	84	snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
	85	snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
	86	}
	87	}
	88	}
	89	if (status & 0x04) {
	90	STAT_ADD(gus->gf1.interrupt_stat_timer1);
c2cbdbb1 IM	91	if (gus->gf1.interrupt_handler_timer1)
c2cbdbb1 IM	92	gus->gf1.interrupt_handler_timer1(gus);
1da177e4 LT	93	}
	94	if (status & 0x08) {
	95	STAT_ADD(gus->gf1.interrupt_stat_timer2);
c2cbdbb1 IM	96	if (gus->gf1.interrupt_handler_timer2)
c2cbdbb1 IM	97	gus->gf1.interrupt_handler_timer2(gus);
1da177e4 LT	98	}
	99	if (status & 0x80) {
	100	if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL) & 0x40) {
	101	STAT_ADD(gus->gf1.interrupt_stat_dma_write);
c2cbdbb1 IM	102	if (gus->gf1.interrupt_handler_dma_write)
c2cbdbb1 IM	103	gus->gf1.interrupt_handler_dma_write(gus);
1da177e4 LT	104	}
	105	if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL) & 0x40) {
	106	STAT_ADD(gus->gf1.interrupt_stat_dma_read);
c2cbdbb1 IM	107	if (gus->gf1.interrupt_handler_dma_read)
c2cbdbb1 IM	108	gus->gf1.interrupt_handler_dma_read(gus);
1da177e4 LT	109	}
	110	}
	111	if (--loop > 0)
	112	goto __again;
	113	return IRQ_NONE;
	114	}
	115
	116	#ifdef CONFIG_SND_DEBUG
5e2da206 TI	117	static void snd_gus_irq_info_read(struct snd_info_entry *entry,
5e2da206 TI	118	struct snd_info_buffer *buffer)
1da177e4	119	{
5e2da206 TI	120	struct snd_gus_card *gus;
5e2da206 TI	121	struct snd_gus_voice *pvoice;
1da177e4 LT	122	int idx;
	123
	124	gus = entry->private_data;
	125	snd_iprintf(buffer, "midi out = %u\n", gus->gf1.interrupt_stat_midi_out);
	126	snd_iprintf(buffer, "midi in = %u\n", gus->gf1.interrupt_stat_midi_in);
	127	snd_iprintf(buffer, "timer1 = %u\n", gus->gf1.interrupt_stat_timer1);
	128	snd_iprintf(buffer, "timer2 = %u\n", gus->gf1.interrupt_stat_timer2);
	129	snd_iprintf(buffer, "dma write = %u\n", gus->gf1.interrupt_stat_dma_write);
	130	snd_iprintf(buffer, "dma read = %u\n", gus->gf1.interrupt_stat_dma_read);
	131	snd_iprintf(buffer, "voice lost = %u\n", gus->gf1.interrupt_stat_voice_lost);
	132	for (idx = 0; idx < 32; idx++) {
	133	pvoice = &gus->gf1.voices[idx];
	134	snd_iprintf(buffer, "voice %i: wave = %u, volume = %u\n",
	135	idx,
	136	pvoice->interrupt_stat_wave,
	137	pvoice->interrupt_stat_volume);
	138	}
	139	}
	140
5e2da206	141	void snd_gus_irq_profile_init(struct snd_gus_card *gus)
1da177e4	142	{
5e2da206	143	struct snd_info_entry *entry;
1da177e4 LT	144
1da177e4 LT	145	if (! snd_card_proc_new(gus->card, "gusirq", &entry))
bf850204	146	snd_info_set_text_ops(entry, gus, snd_gus_irq_info_read);
1da177e4 LT	147	}
	148
	149	#endif