| /* |
| * 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(struct snd_seq_oss_arg *arg, void *closure); |
| static int snd_opl3_close_seq_oss(struct snd_seq_oss_arg *arg); |
| static int snd_opl3_ioctl_seq_oss(struct snd_seq_oss_arg *arg, unsigned int cmd, unsigned long ioarg); |
| static int snd_opl3_load_patch_seq_oss(struct snd_seq_oss_arg *arg, int format, const char __user *buf, int offs, int count); |
| static int snd_opl3_reset_seq_oss(struct snd_seq_oss_arg *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 struct snd_midi_op opl3_ops; |
| |
| static struct snd_seq_oss_callback 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(struct snd_seq_event *ev, int direct, |
| void *private_data, int atomic, int hop) |
| { |
| struct snd_opl3 *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) |
| { |
| struct snd_opl3 *opl3 = private_data; |
| |
| snd_midi_channel_free_set(opl3->oss_chset); |
| } |
| |
| static int snd_opl3_oss_create_port(struct snd_opl3 * opl3) |
| { |
| struct snd_seq_port_callback 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) { |
| int port; |
| port = opl3->oss_chset->port; |
| snd_midi_channel_free_set(opl3->oss_chset); |
| return port; |
| } |
| return 0; |
| } |
| |
| /* ------------------------------ */ |
| |
| /* register OSS synth */ |
| void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name) |
| { |
| struct snd_seq_oss_reg *arg; |
| struct snd_seq_device *dev; |
| |
| if (snd_seq_device_new(opl3->card, 0, SNDRV_SEQ_DEV_ID_OSS, |
| sizeof(struct snd_seq_oss_reg), &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; |
| |
| if (snd_opl3_oss_create_port(opl3)) { |
| /* register to OSS synth table */ |
| snd_device_register(opl3->card, dev); |
| } |
| } |
| |
| /* unregister */ |
| void snd_opl3_free_seq_oss(struct snd_opl3 *opl3) |
| { |
| if (opl3->oss_seq_dev) { |
| /* The instance should have been released in prior */ |
| opl3->oss_seq_dev = NULL; |
| } |
| } |
| |
| /* ------------------------------ */ |
| |
| /* open OSS sequencer */ |
| static int snd_opl3_open_seq_oss(struct snd_seq_oss_arg *arg, void *closure) |
| { |
| struct snd_opl3 *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(struct snd_seq_oss_arg *arg) |
| { |
| struct snd_opl3 *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(struct snd_seq_oss_arg *arg, int format, |
| const char __user *buf, int offs, int count) |
| { |
| struct snd_opl3 *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; |
| struct snd_seq_instr_header *put; |
| struct snd_seq_instr_data *data; |
| struct fm_xinstrument *xinstr; |
| |
| struct snd_seq_event 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(struct fm_xinstrument); |
| 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 = (struct fm_xinstrument *)(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) { |
| struct snd_seq_instr_header 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(struct snd_seq_oss_arg *arg, unsigned int cmd, |
| unsigned long ioarg) |
| { |
| struct snd_opl3 *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(struct snd_seq_oss_arg *arg) |
| { |
| struct snd_opl3 *opl3; |
| |
| snd_assert(arg != NULL, return -ENXIO); |
| opl3 = arg->private_data; |
| |
| return 0; |
| } |