1 files changed, 356 insertions, 0 deletions

diff --git a/sound/drivers/opl3/opl3_oss.c b/sound/drivers/opl3/opl3_oss.c
new file mode 100644
index 000000000000..33da334ae981
--- /dev/null
+++ b/sound/drivers/opl3/opl3_oss.c
@@ -0,0 +1,356 @@
+/*
+ *  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 = kcalloc(1, 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;
+}