/*
* Interface for OSS sequencer emulation
*
* Copyright (C) 2000 Uros Bizjak <uros@kss-loka.si>
*
* 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 "opl3_voice.h"
#include <linux/slab.h>
static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure);
static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg);
static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd, unsigned long ioarg);
static int snd_opl3_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format, const char __user *buf, int offs, int count);
static int snd_opl3_reset_seq_oss(snd_seq_oss_arg_t *arg);
/* */
static inline mm_segment_t snd_enter_user(void)
{
mm_segment_t fs = get_fs();
set_fs(get_ds());
return fs;
}
static inline void snd_leave_user(mm_segment_t fs)
{
set_fs(fs);
}
/* operators */
extern snd_midi_op_t opl3_ops;
static snd_seq_oss_callback_t oss_callback = {
.owner = THIS_MODULE,
.open = snd_opl3_open_seq_oss,
.close = snd_opl3_close_seq_oss,
.ioctl = snd_opl3_ioctl_seq_oss,
.load_patch = snd_opl3_load_patch_seq_oss,
.reset = snd_opl3_reset_seq_oss,
};
static int snd_opl3_oss_event_input(snd_seq_event_t *ev, int direct,
void *private_data, int atomic, int hop)
{
opl3_t *opl3 = private_data;
if (ev->type != SNDRV_SEQ_EVENT_OSS)
snd_midi_process_event(&opl3_ops, ev, opl3->oss_chset);
return 0;
}
/* ------------------------------ */
static void snd_opl3_oss_free_port(void *private_data)
{
opl3_t *opl3 = private_data;
snd_midi_channel_free_set(opl3->oss_chset);
}
static int snd_opl3_oss_create_port(opl3_t * opl3)
{
snd_seq_port_callback_t callbacks;
char name[32];
int voices, opl_ver;
voices = (opl3->hardware < OPL3_HW_OPL3) ?
MAX_OPL2_VOICES : MAX_OPL3_VOICES;
opl3->oss_chset = snd_midi_channel_alloc_set(voices);
if (opl3->oss_chset == NULL)
return -ENOMEM;
opl3->oss_chset->private_data = opl3;
memset(&callbacks, 0, sizeof(callbacks));
callbacks.owner = THIS_MODULE;
callbacks.event_input = snd_opl3_oss_event_input;
callbacks.private_free = snd_opl3_oss_free_port;
callbacks.private_data = opl3;
opl_ver = (opl3->hardware & OPL3_HW_MASK) >> 8;
sprintf(name, "OPL%i OSS Port", opl_ver);
opl3->oss_chset->client = opl3->seq_client;
opl3->oss_chset->port = snd_seq_event_port_attach(opl3->seq_client, &callbacks,
SNDRV_SEQ_PORT_CAP_WRITE,
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
SNDRV_SEQ_PORT_TYPE_MIDI_GM |
SNDRV_SEQ_PORT_TYPE_SYNTH,
voices, voices,
name);
if (opl3->oss_chset->port < 0) {
snd_midi_channel_free_set(opl3->oss_chset);
return opl3->oss_chset->port;
}
return 0;
}
/* ------------------------------ */
/* register OSS synth */
void snd_opl3_init_seq_oss(opl3_t *opl3, char *name)
{
snd_seq_oss_reg_t *arg;
snd_seq_device_t *dev;
if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS,
sizeof(snd_seq_oss_reg_t), &dev) < 0)
return;
opl3->oss_seq_dev = dev;
strlcpy(dev->name, name, sizeof(dev->name));
arg = SNDRV_SEQ_DEVICE_ARGPTR(dev);
arg->type = SYNTH_TYPE_FM;
if (opl3->hardware < OPL3_HW_OPL3) {
arg->subtype = FM_TYPE_ADLIB;
arg->nvoices = MAX_OPL2_VOICES;
} else {
arg->subtype = FM_TYPE_OPL3;
arg->nvoices = MAX_OPL3_VOICES;
}
arg->oper = oss_callback;
arg->private_data = opl3;
snd_opl3_oss_create_port(opl3);
/* register to OSS synth table */
snd_device_register(opl3->card, dev);
}
/* unregister */
void snd_opl3_free_seq_oss(opl3_t *opl3)
{
if (opl3->oss_seq_dev) {
snd_device_free(opl3->card, opl3->oss_seq_dev);
opl3->oss_seq_dev = NULL;
}
}
/* ------------------------------ */
/* open OSS sequencer */
static int snd_opl3_open_seq_oss(snd_seq_oss_arg_t *arg, void *closure)
{
opl3_t *opl3 = closure;
int err;
snd_assert(arg != NULL, return -ENXIO);
if ((err = snd_opl3_synth_setup(opl3)) < 0)
return err;
/* fill the argument data */
arg->private_data = opl3;
arg->addr.client = opl3->oss_chset->client;
arg->addr.port = opl3->oss_chset->port;
if ((err = snd_opl3_synth_use_inc(opl3)) < 0)
return err;
opl3->synth_mode = SNDRV_OPL3_MODE_SYNTH;
return 0;
}
/* close OSS sequencer */
static int snd_opl3_close_seq_oss(snd_seq_oss_arg_t *arg)
{
opl3_t *opl3;
snd_assert(arg != NULL, return -ENXIO);
opl3 = arg->private_data;
snd_opl3_synth_cleanup(opl3);
snd_opl3_synth_use_dec(opl3);
return 0;
}
/* load patch */
/* offsets for SBI params */
#define AM_VIB 0
#define KSL_LEVEL 2
#define ATTACK_DECAY 4
#define SUSTAIN_RELEASE 6
#define WAVE_SELECT 8
/* offset for SBI instrument */
#define CONNECTION 10
#define OFFSET_4OP 11
/* from sound_config.h */
#define SBFM_MAXINSTR 256
static int snd_opl3_load_patch_seq_oss(snd_seq_oss_arg_t *arg, int format,
const char __user *buf, int offs, int count)
{
opl3_t *opl3;
int err = -EINVAL;
snd_assert(arg != NULL, return -ENXIO);
opl3 = arg->private_data;
if ((format == FM_PATCH) || (format == OPL3_PATCH)) {
struct sbi_instrument sbi;
size_t size;
snd_seq_instr_header_t *put;
snd_seq_instr_data_t *data;
fm_xinstrument_t *xinstr;
snd_seq_event_t ev;
int i;
mm_segment_t fs;
if (count < (int)sizeof(sbi)) {
snd_printk("FM Error: Patch record too short\n");
return -EINVAL;
}
if (copy_from_user(&sbi, buf, sizeof(sbi)))
return -EFAULT;
if (sbi.channel < 0 || sbi.channel >= SBFM_MAXINSTR) {
snd_printk("FM Error: Invalid instrument number %d\n", sbi.channel);
return -EINVAL;
}
size = sizeof(*put) + sizeof(fm_xinstrument_t);
put = kzalloc(size, GFP_KERNEL);
if (put == NULL)
return -ENOMEM;
/* build header */
data = &put->data;
data->type = SNDRV_SEQ_INSTR_ATYPE_DATA;
strcpy(data->data.format, SNDRV_SEQ_INSTR_ID_OPL2_3);
/* build data section */
xinstr = (fm_xinstrument_t *)(data + 1);
xinstr->stype = FM_STRU_INSTR;
for (i = 0; i < 2; i++) {
xinstr->op[i].am_vib = sbi.operators[AM_VIB + i];
xinstr->op[i].ksl_level = sbi.operators[KSL_LEVEL + i];
xinstr->op[i].attack_decay = sbi.operators[ATTACK_DECAY + i];
xinstr->op[i].sustain_release = sbi.operators[SUSTAIN_RELEASE + i];
xinstr->op[i].wave_select = sbi.operators[WAVE_SELECT + i];
}
xinstr->feedback_connection[0] = sbi.operators[CONNECTION];
if (format == OPL3_PATCH) {
xinstr->type = FM_PATCH_OPL3;
for (i = 0; i < 2; i++) {
xinstr->op[i+2].am_vib = sbi.operators[OFFSET_4OP + AM_VIB + i];
xinstr->op[i+2].ksl_level = sbi.operators[OFFSET_4OP + KSL_LEVEL + i];
xinstr->op[i+2].attack_decay = sbi.operators[OFFSET_4OP + ATTACK_DECAY + i];
xinstr->op[i+2].sustain_release = sbi.operators[OFFSET_4OP + SUSTAIN_RELEASE + i];
xinstr->op[i+2].wave_select = sbi.operators[OFFSET_4OP + WAVE_SELECT + i];
}
xinstr->feedback_connection[1] = sbi.operators[OFFSET_4OP + CONNECTION];
} else {
xinstr->type = FM_PATCH_OPL2;
}
put->id.instr.std = SNDRV_SEQ_INSTR_TYPE2_OPL2_3;
put->id.instr.bank = 127;
put->id.instr.prg = sbi.channel;
put->cmd = SNDRV_SEQ_INSTR_PUT_CMD_CREATE;
memset (&ev, 0, sizeof(ev));
ev.source.client = SNDRV_SEQ_CLIENT_OSS;
ev.dest = arg->addr;
ev.flags = SNDRV_SEQ_EVENT_LENGTH_VARUSR;
ev.queue = SNDRV_SEQ_QUEUE_DIRECT;
fs = snd_enter_user();
__again:
ev.type = SNDRV_SEQ_EVENT_INSTR_PUT;
ev.data.ext.len = size;
ev.data.ext.ptr = put;
err = snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
opl3->seq_client, 0, 0);
if (err == -EBUSY) {
snd_seq_instr_header_t remove;
memset (&remove, 0, sizeof(remove));
remove.cmd = SNDRV_SEQ_INSTR_FREE_CMD_SINGLE;
remove.id.instr = put->id.instr;
/* remove instrument */
ev.type = SNDRV_SEQ_EVENT_INSTR_FREE;
ev.data.ext.len = sizeof(remove);
ev.data.ext.ptr = &remove;
snd_seq_instr_event(&opl3->fm_ops, opl3->ilist, &ev,
opl3->seq_client, 0, 0);
goto __again;
}
snd_leave_user(fs);
kfree(put);
}
return err;
}
/* ioctl */
static int snd_opl3_ioctl_seq_oss(snd_seq_oss_arg_t *arg, unsigned int cmd,
unsigned long ioarg)
{
opl3_t *opl3;
snd_assert(arg != NULL, return -ENXIO);
opl3 = arg->private_data;
switch (cmd) {
case SNDCTL_FM_LOAD_INSTR:
snd_printk("OPL3: Obsolete ioctl(SNDCTL_FM_LOAD_INSTR) used. Fix the program.\n");
return -EINVAL;
case SNDCTL_SYNTH_MEMAVL:
return 0x7fffffff;
case SNDCTL_FM_4OP_ENABLE:
// handled automatically by OPL instrument type
return 0;
default:
return -EINVAL;
}
return 0;
}
/* reset device */
static int snd_opl3_reset_seq_oss(snd_seq_oss_arg_t *arg)
{
opl3_t *opl3;
snd_assert(arg != NULL, return -ENXIO);
opl3 = arg->private_data;
return 0;
}
