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freebsd/sys/i386/isa/sound/mpu401.c

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/*
* sound/mpu401.c
*
* The low level driver for Roland MPU-401 compatible Midi cards.
*
* Copyright by Hannu Savolainen 1993
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. 2.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Modified: Riccardo Facchetti 24 Mar 1995 - Added the Audio Excel DSP 16
* initialization routine.
*/
#define USE_SEQ_MACROS
#define USE_SIMPLE_MACROS
#include <i386/isa/sound/sound_config.h>
#if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI)
#include <i386/isa/sound/coproc.h>
static int init_sequence[20]; /* NOTE! pos 0 = len, start pos 1. */
#ifdef CONFIG_SEQUENCER
static int timer_mode = TMR_INTERNAL, timer_caps = TMR_INTERNAL;
#endif
struct mpu_config {
int base; /* I/O base */
int irq;
int opened; /* Open mode */
int devno;
int synthno;
int uart_mode;
int initialized;
int mode;
#define MODE_MIDI 1
#define MODE_SYNTH 2
u_char version, revision;
u_int capabilities;
#define MPU_CAP_INTLG 0x10000000
#define MPU_CAP_SYNC 0x00000010
#define MPU_CAP_FSK 0x00000020
#define MPU_CAP_CLS 0x00000040
#define MPU_CAP_SMPTE 0x00000080
#define MPU_CAP_2PORT 0x00000001
int timer_flag;
#define MBUF_MAX 10
#define BUFTEST(dc) if (dc->m_ptr >= MBUF_MAX || dc->m_ptr < 0) \
{printf("MPU: Invalid buffer pointer %d/%d, s=%d\n", dc->m_ptr, dc->m_left, dc->m_state);dc->m_ptr--;}
int m_busy;
u_char m_buf[MBUF_MAX];
int m_ptr;
int m_state;
int m_left;
u_char last_status;
void (*inputintr) (int dev, u_char data);
int shared_irq;
sound_os_info *osp;
};
#define DATAPORT(base) (base)
#define COMDPORT(base) (base+1)
#define STATPORT(base) (base+1)
#define mpu401_status(devc) inb( STATPORT(devc->base))
#define input_avail(devc) (!(mpu401_status(devc)&INPUT_AVAIL))
#define output_ready(devc) (!(mpu401_status(devc)&OUTPUT_READY))
#define write_command(devc, cmd) outb( COMDPORT(devc->base), cmd)
#define read_data(devc) inb( DATAPORT(devc->base))
#define write_data(devc, byte) outb( DATAPORT(devc->base), byte)
#define OUTPUT_READY 0x40
#define INPUT_AVAIL 0x80
#define MPU_ACK 0xFE
#define MPU_RESET 0xFF
#define UART_MODE_ON 0x3F
static struct mpu_config dev_conf[MAX_MIDI_DEV] = { {0}};
static int n_mpu_devs = 0;
static volatile int irq2dev[17] =
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
static int reset_mpu401(struct mpu_config * devc);
static void set_uart_mode(int dev, struct mpu_config * devc, int arg);
static void mpu_timer_init(int midi_dev);
static void mpu_timer_interrupt(void);
static void timer_ext_event(struct mpu_config * devc, int event, int parm);
static struct synth_info mpu_synth_info_proto =
{"MPU-401 MIDI interface", 0, SYNTH_TYPE_MIDI, 0, 0, 128, 0, 128, SYNTH_CAP_INPUT};
static struct synth_info mpu_synth_info[MAX_MIDI_DEV];
/*
* States for the input scanner
*/
#define ST_INIT 0 /* Ready for timing byte or msg */
#define ST_TIMED 1 /* Leading timing byte rcvd */
#define ST_DATABYTE 2 /* Waiting for (nr_left) data bytes */
#define ST_SYSMSG 100 /* System message (sysx etc). */
#define ST_SYSEX 101 /* System exclusive msg */
#define ST_MTC 102 /* Midi Time Code (MTC) qframe msg */
#define ST_SONGSEL 103 /* Song select */
#define ST_SONGPOS 104 /* Song position pointer */
static u_char len_tab[] =/* # of data bytes following a status */
{
2, /* 8x */
2, /* 9x */
2, /* Ax */
2, /* Bx */
1, /* Cx */
1, /* Dx */
2, /* Ex */
0 /* Fx */
};
#ifndef CONFIG_SEQUENCER
#define STORE(cmd)
#else
#define STORE(cmd) \
{ \
int len; \
u_char obuf[8]; \
cmd; \
seq_input_event(obuf, len); \
}
#endif
#define _seqbuf obuf
#define _seqbufptr 0
#define _SEQ_ADVBUF(x) len=x
static int
mpu_input_scanner(struct mpu_config * devc, u_char midic)
{
switch (devc->m_state) {
case ST_INIT:
switch (midic) {
case 0xf8:
/* Timer overflow */
break;
case 0xfc:
printf("<all end>");
break;
case 0xfd:
if (devc->timer_flag)
mpu_timer_interrupt();
break;
case 0xfe:
return MPU_ACK;
break;
case 0xf0:
case 0xf1:
case 0xf2:
case 0xf3:
case 0xf4:
case 0xf5:
case 0xf6:
case 0xf7:
printf("<Trk data rq #%d>", midic & 0x0f);
break;
case 0xf9:
printf("<conductor rq>");
break;
case 0xff:
devc->m_state = ST_SYSMSG;
break;
default:
if (midic <= 0xef) {
/* printf("mpu time: %d ", midic); */
devc->m_state = ST_TIMED;
} else
printf("<MPU: Unknown event %02x> ", midic);
}
break;
case ST_TIMED:
{
int msg = ((int) (midic & 0xf0) >> 4);
devc->m_state = ST_DATABYTE;
if (msg < 8) { /* Data byte */
/* printf("midi msg (running status) "); */
msg = ((int) (devc->last_status & 0xf0) >> 4);
msg -= 8;
devc->m_left = len_tab[msg] - 1;
devc->m_ptr = 2;
devc->m_buf[0] = devc->last_status;
devc->m_buf[1] = midic;
if (devc->m_left <= 0) {
devc->m_state = ST_INIT;
do_midi_msg(devc->synthno, devc->m_buf, devc->m_ptr);
devc->m_ptr = 0;
}
} else if (msg == 0xf) { /* MPU MARK */
devc->m_state = ST_INIT;
switch (midic) {
case 0xf8:
/* printf("NOP "); */
break;
case 0xf9:
/* printf("meas end "); */
break;
case 0xfc:
/* printf("data end "); */
break;
default:
printf("Unknown MPU mark %02x\n", midic);
}
} else {
devc->last_status = midic;
/* printf ("midi msg "); */
msg -= 8;
devc->m_left = len_tab[msg];
devc->m_ptr = 1;
devc->m_buf[0] = midic;
if (devc->m_left <= 0) {
devc->m_state = ST_INIT;
do_midi_msg(devc->synthno, devc->m_buf, devc->m_ptr);
devc->m_ptr = 0;
}
}
}
break;
case ST_SYSMSG:
switch (midic) {
case 0xf0:
printf("<SYX>");
devc->m_state = ST_SYSEX;
break;
case 0xf1:
devc->m_state = ST_MTC;
break;
case 0xf2:
devc->m_state = ST_SONGPOS;
devc->m_ptr = 0;
break;
case 0xf3:
devc->m_state = ST_SONGSEL;
break;
case 0xf6:
/* printf("tune_request\n"); */
devc->m_state = ST_INIT;
/* XXX do we need a break here ? - lr 970710 */
/*
* Real time messages
*/
case 0xf8:
/* midi clock */
devc->m_state = ST_INIT;
timer_ext_event(devc, TMR_CLOCK, 0);
break;
case 0xfA:
devc->m_state = ST_INIT;
timer_ext_event(devc, TMR_START, 0);
break;
case 0xFB:
devc->m_state = ST_INIT;
timer_ext_event(devc, TMR_CONTINUE, 0);
break;
case 0xFC:
devc->m_state = ST_INIT;
timer_ext_event(devc, TMR_STOP, 0);
break;
case 0xFE:
/* active sensing */
devc->m_state = ST_INIT;
break;
case 0xff:
/* printf("midi hard reset"); */
devc->m_state = ST_INIT;
break;
default:
printf("unknown MIDI sysmsg %0x\n", midic);
devc->m_state = ST_INIT;
}
break;
case ST_MTC:
devc->m_state = ST_INIT;
printf("MTC frame %x02\n", midic);
break;
case ST_SYSEX:
if (midic == 0xf7) {
printf("<EOX>");
devc->m_state = ST_INIT;
} else
printf("%02x ", midic);
break;
case ST_SONGPOS:
BUFTEST(devc);
devc->m_buf[devc->m_ptr++] = midic;
if (devc->m_ptr == 2) {
devc->m_state = ST_INIT;
devc->m_ptr = 0;
timer_ext_event(devc, TMR_SPP,
((devc->m_buf[1] & 0x7f) << 7) | (devc->m_buf[0] & 0x7f));
}
break;
case ST_DATABYTE:
BUFTEST(devc);
devc->m_buf[devc->m_ptr++] = midic;
if ((--devc->m_left) <= 0) {
devc->m_state = ST_INIT;
do_midi_msg(devc->synthno, devc->m_buf, devc->m_ptr);
devc->m_ptr = 0;
}
break;
default:
printf("Bad state %d ", devc->m_state);
devc->m_state = ST_INIT;
}
return 1;
}
static void
mpu401_input_loop(struct mpu_config * devc)
{
u_long flags;
int n, busy;
flags = splhigh();
busy = devc->m_busy;
devc->m_busy = 1;
splx(flags);
if (busy) /* Already inside the scanner */
return;
n = 50;
while (input_avail(devc) && n-- > 0) {
u_char c = read_data(devc);
if (devc->mode == MODE_SYNTH) {
mpu_input_scanner(devc, c);
} else if (devc->opened & OPEN_READ && devc->inputintr != NULL)
devc->inputintr(devc->devno, c);
}
devc->m_busy = 0;
}
void
mpuintr(int irq)
{
struct mpu_config *devc;
int dev;
/*
* FreeBSD (and some others) pass unit number to the interrupt
* handler. In this case we have to scan the table for first handler.
*/
if (irq < 1 || irq > 15) {
dev = -1;
} else
dev = irq2dev[irq];
if (dev == -1) {
int origirq = irq;
for (irq = 0; irq <= 16; irq++)
if (irq2dev[irq] != -1)
break;
if (irq > 15) {
printf("MPU-401: Bogus interrupt #%d?\n", origirq);
return;
}
dev = irq2dev[irq];
devc = &dev_conf[dev];
} else
devc = &dev_conf[dev];
if (input_avail(devc))
if (devc->base != 0 && (devc->opened & OPEN_READ || devc->mode == MODE_SYNTH))
mpu401_input_loop(devc);
else {
/* Dummy read (just to acknowledge the interrupt) */
read_data(devc);
}
}
static int
mpu401_open(int dev, int mode,
void (*input) (int dev, u_char data), void (*output) (int dev))
{
int err;
struct mpu_config *devc;
if (dev < 0 || dev >= num_midis)
return -(ENXIO);
devc = &dev_conf[dev];
if (devc->opened) {
printf("MPU-401: Midi busy\n");
return -(EBUSY);
}
/*
* Verify that the device is really running. Some devices (such as
* Ensoniq SoundScape don't work before the on board processor (OBP)
* is initialized by downloading its microcode.
*/
if (!devc->initialized) {
if (mpu401_status(devc) == 0xff) { /* Bus float */
printf("MPU-401: Device not initialized properly\n");
return -(EIO);
}
reset_mpu401(devc);
}
irq2dev[devc->irq] = dev;
if (midi_devs[dev]->coproc)
if ((err = midi_devs[dev]->coproc->
open(midi_devs[dev]->coproc->devc, COPR_MIDI)) < 0) {
printf("MPU-401: Can't access coprocessor device\n");
return err;
}
set_uart_mode(dev, devc, 1);
devc->mode = MODE_MIDI;
devc->synthno = 0;
mpu401_input_loop(devc);
devc->inputintr = input;
devc->opened = mode;
return 0;
}
static void
mpu401_close(int dev)
{
struct mpu_config *devc;
devc = &dev_conf[dev];
if (devc->uart_mode)
reset_mpu401(devc); /* This disables the UART mode */
devc->mode = 0;
devc->inputintr = NULL;
if (midi_devs[dev]->coproc)
midi_devs[dev]->coproc->close(midi_devs[dev]->coproc->devc, COPR_MIDI);
devc->opened = 0;
}
static int
mpu401_out(int dev, u_char midi_byte)
{
int timeout;
u_long flags;
struct mpu_config *devc;
devc = &dev_conf[dev];
/*
* Sometimes it takes about 13000 loops before the output becomes
* ready (After reset). Normally it takes just about 10 loops.
*/
for (timeout = 3000; timeout > 0 && !output_ready(devc); timeout--);
flags = splhigh();
if (!output_ready(devc)) {
printf("MPU-401: Send data timeout\n");
splx(flags);
return 0;
}
write_data(devc, midi_byte);
splx(flags);
return 1;
}
static int
mpu401_command(int dev, mpu_command_rec * cmd)
{
int i, timeout, ok;
int ret = 0;
u_long flags;
struct mpu_config *devc;
devc = &dev_conf[dev];
if (devc->uart_mode) { /* Not possible in UART mode */
printf("MPU-401 commands not possible in the UART mode\n");
return -(EINVAL);
}
/*
* Test for input since pending input seems to block the output.
*/
if (input_avail(devc))
mpu401_input_loop(devc);
/*
* Sometimes it takes about 30000 loops before the output becomes
* ready (After reset). Normally it takes just about 10 loops.
*/
timeout = 30000;
retry:
if (timeout-- <= 0) {
printf("MPU-401: Command (0x%x) timeout\n", (int) cmd->cmd);
return -(EIO);
}
flags = splhigh();
if (!output_ready(devc)) {
splx(flags);
goto retry;
}
write_command(devc, cmd->cmd);
ok = 0;
for (timeout = 50000; timeout > 0 && !ok; timeout--)
if (input_avail(devc))
if (devc->opened && devc->mode == MODE_SYNTH) {
if (mpu_input_scanner(devc, read_data(devc)) == MPU_ACK)
ok = 1;
} else {/* Device is not currently open. Use simplier method */
if (read_data(devc) == MPU_ACK)
ok = 1;
}
if (!ok) {
splx(flags);
/* printf ("MPU: No ACK to command (0x%x)\n", (int) cmd->cmd); */
return -(EIO);
}
if (cmd->nr_args)
for (i = 0; i < cmd->nr_args; i++) {
for (timeout = 3000; timeout > 0 && !output_ready(devc); timeout--);
if (!mpu401_out(dev, cmd->data[i])) {
splx(flags);
printf("MPU: Command (0x%x), parm send failed.\n", (int) cmd->cmd);
return -(EIO);
}
}
ret = 0;
cmd->data[0] = 0;
if (cmd->nr_returns)
for (i = 0; i < cmd->nr_returns; i++) {
ok = 0;
for (timeout = 5000; timeout > 0 && !ok; timeout--)
if (input_avail(devc)) {
cmd->data[i] = read_data(devc);
ok = 1;
}
if (!ok) {
splx(flags);
/* printf ("MPU: No response(%d) to command (0x%x)\n",
* i, (int) cmd->cmd);
*/
return -(EIO);
}
}
splx(flags);
return ret;
}
static int
mpu_cmd(int dev, int cmd, int data)
{
int ret;
static mpu_command_rec rec;
rec.cmd = cmd & 0xff;
rec.nr_args = ((cmd & 0xf0) == 0xE0);
rec.nr_returns = ((cmd & 0xf0) == 0xA0);
rec.data[0] = data & 0xff;
if ((ret = mpu401_command(dev, &rec)) < 0) {
return ret;
}
return (u_char) rec.data[0];
}
static int
mpu401_prefix_cmd(int dev, u_char status)
{
struct mpu_config *devc = &dev_conf[dev];
if (devc->uart_mode)
return 1;
if (status < 0xf0) {
if (mpu_cmd(dev, 0xD0, 0) < 0) {
return 0;
}
return 1;
}
switch (status) {
case 0xF0:
if (mpu_cmd(dev, 0xDF, 0) < 0) {
return 0;
}
return 1;
break;
default:
return 0;
}
}
static int
mpu401_start_read(int dev)
{
return 0;
}
static int
mpu401_end_read(int dev)
{
return 0;
}
static int
mpu401_ioctl(int dev, u_int cmd, ioctl_arg arg)
{
struct mpu_config *devc;
devc = &dev_conf[dev];
switch (cmd) {
case 1:
bcopy(&(((char *) arg)[0]), (char *) init_sequence, sizeof(init_sequence));
return 0;
break;
case SNDCTL_MIDI_MPUMODE:
if (!(devc->capabilities & MPU_CAP_INTLG)) { /* No intelligent mode */
printf("MPU-401: Intelligent mode not supported by the HW\n");
return -(EINVAL);
}
set_uart_mode(dev, devc, !(*(int *) arg));
return 0;
break;
case SNDCTL_MIDI_MPUCMD:
{
int ret;
mpu_command_rec rec;
bcopy(&(((char *) arg)[0]), (char *) &rec, sizeof(rec));
if ((ret = mpu401_command(dev, &rec)) < 0)
return ret;
bcopy((char *) &rec, &(((char *) arg)[0]), sizeof(rec));
return 0;
}
break;
default:
return -(EINVAL);
}
}
static void
mpu401_kick(int dev)
{
}
static int
mpu401_buffer_status(int dev)
{
return 0; /* No data in buffers */
}
static int
mpu_synth_ioctl(int dev,
u_int cmd, ioctl_arg arg)
{
int midi_dev;
struct mpu_config *devc;
midi_dev = synth_devs[dev]->midi_dev;
if (midi_dev < 0 || midi_dev > num_midis)
return -(ENXIO);
devc = &dev_conf[midi_dev];
switch (cmd) {
case SNDCTL_SYNTH_INFO:
bcopy(&mpu_synth_info[midi_dev], &(((char *) arg)[0]), sizeof(struct synth_info));
return 0;
break;
case SNDCTL_SYNTH_MEMAVL:
return 0x7fffffff;
break;
default:
return -(EINVAL);
}
}
static int
mpu_synth_open(int dev, int mode)
{
int midi_dev, err;
struct mpu_config *devc;
midi_dev = synth_devs[dev]->midi_dev;
if (midi_dev < 0 || midi_dev > num_midis) {
return -(ENXIO);
}
devc = &dev_conf[midi_dev];
/*
* Verify that the device is really running. Some devices (such as
* Ensoniq SoundScape don't work before the on board processor (OBP)
* is initialized by downloading its microcode.
*/
if (!devc->initialized) {
if (mpu401_status(devc) == 0xff) { /* Bus float */
printf("MPU-401: Device not initialized properly\n");
return -(EIO);
}
reset_mpu401(devc);
}
if (devc->opened) {
printf("MPU-401: Midi busy\n");
return -(EBUSY);
}
devc->mode = MODE_SYNTH;
devc->synthno = dev;
devc->inputintr = NULL;
irq2dev[devc->irq] = midi_dev;
if (midi_devs[midi_dev]->coproc)
if ((err = midi_devs[midi_dev]->coproc->
open(midi_devs[midi_dev]->coproc->devc, COPR_MIDI)) < 0) {
printf("MPU-401: Can't access coprocessor device\n");
return err;
}
devc->opened = mode;
reset_mpu401(devc);
if (mode & OPEN_READ) {
mpu_cmd(midi_dev, 0x8B, 0); /* Enable data in stop mode */
mpu_cmd(midi_dev, 0x34, 0); /* Return timing bytes in stop mode */
}
return 0;
}
static void
mpu_synth_close(int dev)
{
int midi_dev;
struct mpu_config *devc;
midi_dev = synth_devs[dev]->midi_dev;
devc = &dev_conf[midi_dev];
mpu_cmd(midi_dev, 0x15, 0); /* Stop recording, playback and MIDI */
mpu_cmd(midi_dev, 0x8a, 0); /* Disable data in stopped mode */
devc->inputintr = NULL;
if (midi_devs[midi_dev]->coproc)
midi_devs[midi_dev]->coproc->close(midi_devs[midi_dev]->coproc->devc, COPR_MIDI);
devc->opened = 0;
devc->mode = 0;
}
#define MIDI_SYNTH_NAME "MPU-401 UART Midi"
#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT
#include <i386/isa/sound/midi_synth.h>
static struct synth_operations mpu401_synth_proto =
{
NULL,
0,
SYNTH_TYPE_MIDI,
0,
mpu_synth_open,
mpu_synth_close,
mpu_synth_ioctl,
midi_synth_kill_note,
midi_synth_start_note,
midi_synth_set_instr,
midi_synth_reset,
midi_synth_hw_control,
midi_synth_load_patch,
midi_synth_aftertouch,
midi_synth_controller,
midi_synth_panning,
NULL,
midi_synth_patchmgr,
midi_synth_bender,
NULL, /* alloc */
midi_synth_setup_voice,
midi_synth_send_sysex
};
static struct synth_operations *mpu401_synth_operations[MAX_MIDI_DEV];
static struct midi_operations mpu401_midi_proto =
{
{"MPU-401 Midi", 0, MIDI_CAP_MPU401, SNDCARD_MPU401},
NULL,
{0},
mpu401_open,
mpu401_close,
mpu401_ioctl,
mpu401_out,
mpu401_start_read,
mpu401_end_read,
mpu401_kick,
NULL,
mpu401_buffer_status,
mpu401_prefix_cmd
};
static struct midi_operations mpu401_midi_operations[MAX_MIDI_DEV];
static void
mpu401_chk_version(struct mpu_config * devc)
{
int tmp;
devc->version = devc->revision = 0;
if ((tmp = mpu_cmd(num_midis, 0xAC, 0)) < 0)
return;
if ((tmp & 0xf0) > 0x20)/* Why is it larger than 2.x ??? */
return;
devc->version = tmp;
if ((tmp = mpu_cmd(num_midis, 0xAD, 0)) < 0) {
devc->version = 0;
return;
}
devc->revision = tmp;
}
void
attach_mpu401(struct address_info * hw_config)
{
u_long flags;
char revision_char;
struct mpu_config *devc;
if (num_midis >= MAX_MIDI_DEV) {
printf("MPU-401: Too many midi devices detected\n");
return ;
}
devc = &dev_conf[num_midis];
devc->base = hw_config->io_base;
devc->osp = hw_config->osp;
devc->irq = hw_config->irq;
devc->opened = 0;
devc->uart_mode = 0;
devc->initialized = 0;
devc->version = 0;
devc->revision = 0;
devc->capabilities = 0;
devc->timer_flag = 0;
devc->m_busy = 0;
devc->m_state = ST_INIT;
devc->shared_irq = hw_config->always_detect;
devc->irq = hw_config->irq;
if (devc->irq < 0) {
devc->irq *= -1;
devc->shared_irq = 1;
}
irq2dev[devc->irq] = num_midis;
if (!hw_config->always_detect) {
/* Verify the hardware again */
if (!reset_mpu401(devc))
return ;
if (!devc->shared_irq)
if (snd_set_irq_handler(devc->irq, mpuintr, devc->osp) < 0) {
return ;
}
flags = splhigh();
mpu401_chk_version(devc);
if (devc->version == 0)
mpu401_chk_version(devc);
splx(flags);
};
if (devc->version != 0)
if (mpu_cmd(num_midis, 0xC5, 0) >= 0) /* Set timebase OK */
if (mpu_cmd(num_midis, 0xE0, 120) >= 0) /* Set tempo OK */
devc->capabilities |= MPU_CAP_INTLG; /* Supports intelligent
* mode */
mpu401_synth_operations[num_midis] = (struct synth_operations *) malloc(sizeof(struct synth_operations), M_DEVBUF, M_NOWAIT);
if (!mpu401_synth_operations[num_midis])
panic("SOUND: Cannot allocate memory\n");
if (mpu401_synth_operations[num_midis] == NULL) {
printf("mpu401: Can't allocate memory\n");
return ;
}
if (!(devc->capabilities & MPU_CAP_INTLG)) { /* No intelligent mode */
bcopy((char *) &std_midi_synth, (char *) mpu401_synth_operations[num_midis], sizeof(struct synth_operations));
} else {
bcopy((char *) &mpu401_synth_proto, (char *) mpu401_synth_operations[num_midis], sizeof(struct synth_operations));
}
bcopy((char *) &mpu401_midi_proto, (char *) &mpu401_midi_operations[num_midis], sizeof(struct midi_operations));
mpu401_midi_operations[num_midis].converter =
mpu401_synth_operations[num_midis];
bcopy((char *) &mpu_synth_info_proto, (char *) &mpu_synth_info[num_midis], sizeof(struct synth_info));
n_mpu_devs++;
if (devc->version == 0x20 && devc->revision >= 0x07) { /* MusicQuest interface */
int ports = (devc->revision & 0x08) ? 32 : 16;
devc->capabilities |= MPU_CAP_SYNC | MPU_CAP_SMPTE |
MPU_CAP_CLS | MPU_CAP_2PORT;
revision_char = (devc->revision == 0x7f) ? 'M' : ' ';
sprintf(mpu_synth_info[num_midis].name,
"MQX-%d%c MIDI Interface #%d",
ports,
revision_char,
n_mpu_devs);
} else {
revision_char = devc->revision ? devc->revision + '@' : ' ';
if ((int) devc->revision > ('Z' - '@'))
revision_char = '+';
devc->capabilities |= MPU_CAP_SYNC | MPU_CAP_FSK;
sprintf(mpu_synth_info[num_midis].name,
"MPU-401 %d.%d%c Midi interface #%d",
(int) (devc->version & 0xf0) >> 4,
devc->version & 0x0f,
revision_char,
n_mpu_devs);
}
strcpy(mpu401_midi_operations[num_midis].info.name,
mpu_synth_info[num_midis].name);
conf_printf(mpu_synth_info[num_midis].name, hw_config);
mpu401_synth_operations[num_midis]->midi_dev = devc->devno = num_midis;
mpu401_synth_operations[devc->devno]->info =
&mpu_synth_info[devc->devno];
if (devc->capabilities & MPU_CAP_INTLG) /* Intelligent mode */
mpu_timer_init(num_midis);
irq2dev[devc->irq] = num_midis;
midi_devs[num_midis++] = &mpu401_midi_operations[devc->devno];
return ;
}
static int
reset_mpu401(struct mpu_config * devc)
{
u_long flags;
int ok, timeout, n;
int timeout_limit;
/*
* Send the RESET command. Try again if no success at the first time.
* (If the device is in the UART mode, it will not ack the reset
* cmd).
*/
ok = 0;
timeout_limit = devc->initialized ? 30000 : 100000;
devc->initialized = 1;
for (n = 0; n < 2 && !ok; n++) {
for (timeout = timeout_limit; timeout > 0 && !ok; timeout--)
ok = output_ready(devc);
write_command(devc, MPU_RESET); /* Send MPU-401 RESET Command */
/*
* Wait at least 25 msec. This method is not accurate so
* let's make the loop bit longer. Cannot sleep since this is
* called during boot.
*/
for (timeout = timeout_limit * 2; timeout > 0 && !ok; timeout--) {
flags = splhigh();
if ( (input_avail(devc)) && (read_data(devc) == MPU_ACK) )
ok = 1;
splx(flags);
}
}
devc->m_state = ST_INIT;
devc->m_ptr = 0;
devc->m_left = 0;
devc->last_status = 0;
devc->uart_mode = 0;
return ok;
}
static void
set_uart_mode(int dev, struct mpu_config * devc, int arg)
{
if (!arg && (devc->capabilities & MPU_CAP_INTLG))
return;
if ((devc->uart_mode == 0) == (arg == 0))
return; /* Already set */
reset_mpu401(devc); /* This exits the uart mode */
if (arg && (mpu_cmd(dev, UART_MODE_ON, 0) < 0) ) {
printf("MPU%d: Can't enter UART mode\n", devc->devno);
devc->uart_mode = 0;
return;
}
devc->uart_mode = arg;
}
int
probe_mpu401(struct address_info * hw_config)
{
int ok = 0;
struct mpu_config tmp_devc;
tmp_devc.base = hw_config->io_base;
tmp_devc.irq = hw_config->irq;
tmp_devc.initialized = 0;
tmp_devc.opened = 0;
tmp_devc.osp = hw_config->osp;
#if defined(CONFIG_AEDSP16) && defined(AEDSP16_MPU401)
/*
* Initialize Audio Excel DSP 16 to MPU-401, before any operation.
*/
InitAEDSP16_MPU401(hw_config);
#endif
if (hw_config->always_detect)
return 1;
if (inb(hw_config->io_base + 1) == 0xff) {
DDB(printf("MPU401: Port %x looks dead.\n", hw_config->io_base));
return 0; /* Just bus float? */
}
ok = reset_mpu401(&tmp_devc);
if (!ok) {
DDB(printf("MPU401: Reset failed on port %x\n", hw_config->io_base));
}
return ok;
}
/*
* Timer stuff
*/
#if defined(CONFIG_SEQUENCER)
static volatile int timer_initialized = 0, timer_open = 0, tmr_running = 0;
static volatile int curr_tempo, curr_timebase, hw_timebase;
static int max_timebase = 8; /* 8*24=192 ppqn */
static volatile u_long next_event_time;
static volatile u_long curr_ticks, curr_clocks;
static u_long prev_event_time;
static int metronome_mode;
static u_long
clocks2ticks(u_long clocks)
{
/*
* The MPU-401 supports just a limited set of possible timebase
* values. Since the applications require more choices, the driver
* has to program the HW to do its best and to convert between the
* HW and actual timebases.
*/
return ((clocks * curr_timebase) + (hw_timebase / 2)) / hw_timebase;
}
static void
set_timebase(int midi_dev, int val)
{
int hw_val;
if (val < 48)
val = 48;
if (val > 1000)
val = 1000;
hw_val = val;
hw_val = (hw_val + 12) / 24;
if (hw_val > max_timebase)
hw_val = max_timebase;
if (mpu_cmd(midi_dev, 0xC0 | (hw_val & 0x0f), 0) < 0) {
printf("MPU: Can't set HW timebase to %d\n", hw_val * 24);
return;
}
hw_timebase = hw_val * 24;
curr_timebase = val;
}
static void
tmr_reset(void)
{
u_long flags;
flags = splhigh();
next_event_time = 0xffffffff;
prev_event_time = 0;
curr_ticks = curr_clocks = 0;
splx(flags);
}
static void
set_timer_mode(int midi_dev)
{
if (timer_mode & TMR_MODE_CLS)
mpu_cmd(midi_dev, 0x3c, 0); /* Use CLS sync */
else if (timer_mode & TMR_MODE_SMPTE)
mpu_cmd(midi_dev, 0x3d, 0); /* Use SMPTE sync */
if (timer_mode & TMR_INTERNAL)
mpu_cmd(midi_dev, 0x80, 0); /* Use MIDI sync */
else {
if (timer_mode & (TMR_MODE_MIDI | TMR_MODE_CLS)) {
mpu_cmd(midi_dev, 0x82, 0); /* Use MIDI sync */
mpu_cmd(midi_dev, 0x91, 0); /* Enable ext MIDI ctrl */
} else if (timer_mode & TMR_MODE_FSK)
mpu_cmd(midi_dev, 0x81, 0); /* Use FSK sync */
}
}
static void
stop_metronome(int midi_dev)
{
mpu_cmd(midi_dev, 0x84, 0); /* Disable metronome */
}
static void
setup_metronome(int midi_dev)
{
int numerator, denominator;
int clks_per_click, num_32nds_per_beat;
int beats_per_measure;
numerator = ((u_int) metronome_mode >> 24) & 0xff;
denominator = ((u_int) metronome_mode >> 16) & 0xff;
clks_per_click = ((u_int) metronome_mode >> 8) & 0xff;
num_32nds_per_beat = (u_int) metronome_mode & 0xff;
beats_per_measure = (numerator * 4) >> denominator;
if (!metronome_mode)
mpu_cmd(midi_dev, 0x84, 0); /* Disable metronome */
else {
mpu_cmd(midi_dev, 0xE4, clks_per_click);
mpu_cmd(midi_dev, 0xE6, beats_per_measure);
mpu_cmd(midi_dev, 0x83, 0); /* Enable metronome without
* accents */
}
}
static int
mpu_start_timer(int midi_dev)
{
tmr_reset();
set_timer_mode(midi_dev);
if (tmr_running)
return TIMER_NOT_ARMED; /* Already running */
if (timer_mode & TMR_INTERNAL) {
mpu_cmd(midi_dev, 0x02, 0); /* Send MIDI start */
tmr_running = 1;
return TIMER_NOT_ARMED;
} else {
mpu_cmd(midi_dev, 0x35, 0); /* Enable mode messages to PC */
mpu_cmd(midi_dev, 0x38, 0); /* Enable sys common messages to PC */
mpu_cmd(midi_dev, 0x39, 0); /* Enable real time messages to PC */
mpu_cmd(midi_dev, 0x97, 0); /* Enable system exclusive
* messages to PC */
}
return TIMER_ARMED;
}
static int
mpu_timer_open(int dev, int mode)
{
int midi_dev = sound_timer_devs[dev]->devlink;
if (timer_open)
return -(EBUSY);
tmr_reset();
curr_tempo = 50;
mpu_cmd(midi_dev, 0xE0, 50);
curr_timebase = hw_timebase = 120;
set_timebase(midi_dev, 120);
timer_open = 1;
metronome_mode = 0;
set_timer_mode(midi_dev);
mpu_cmd(midi_dev, 0xe7, 0x04); /* Send all clocks to host */
mpu_cmd(midi_dev, 0x95, 0); /* Enable clock to host */
return 0;
}
static void
mpu_timer_close(int dev)
{
int midi_dev = sound_timer_devs[dev]->devlink;
timer_open = tmr_running = 0;
mpu_cmd(midi_dev, 0x15, 0); /* Stop all */
mpu_cmd(midi_dev, 0x94, 0); /* Disable clock to host */
mpu_cmd(midi_dev, 0x8c, 0); /* Disable measure end messages to
* host */
stop_metronome(midi_dev);
}
static int
mpu_timer_event(int dev, u_char *event)
{
u_char command = event[1];
u_long parm = *(u_int *) &event[4];
int midi_dev = sound_timer_devs[dev]->devlink;
switch (command) {
case TMR_WAIT_REL:
parm += prev_event_time;
case TMR_WAIT_ABS:
if (parm > 0) {
long time;
if (parm <= curr_ticks) /* It's the time */
return TIMER_NOT_ARMED;
time = parm;
next_event_time = prev_event_time = time;
return TIMER_ARMED;
}
break;
case TMR_START:
if (tmr_running)
break;
return mpu_start_timer(midi_dev);
break;
case TMR_STOP:
mpu_cmd(midi_dev, 0x01, 0); /* Send MIDI stop */
stop_metronome(midi_dev);
tmr_running = 0;
break;
case TMR_CONTINUE:
if (tmr_running)
break;
mpu_cmd(midi_dev, 0x03, 0); /* Send MIDI continue */
setup_metronome(midi_dev);
tmr_running = 1;
break;
case TMR_TEMPO:
if (parm) {
if (parm < 8)
parm = 8;
if (parm > 250)
parm = 250;
if (mpu_cmd(midi_dev, 0xE0, parm) < 0)
printf("MPU: Can't set tempo to %d\n", (int) parm);
curr_tempo = parm;
}
break;
case TMR_ECHO:
seq_copy_to_input(event, 8);
break;
case TMR_TIMESIG:
if (metronome_mode) { /* Metronome enabled */
metronome_mode = parm;
setup_metronome(midi_dev);
}
break;
default:;
}
return TIMER_NOT_ARMED;
}
static u_long
mpu_timer_get_time(int dev)
{
if (!timer_open)
return 0;
return curr_ticks;
}
static int
mpu_timer_ioctl(int dev, u_int command, ioctl_arg arg)
{
int midi_dev = sound_timer_devs[dev]->devlink;
switch (command) {
case SNDCTL_TMR_SOURCE:
{
int parm = (int) (*(int *) arg) & timer_caps;
if (parm != 0) {
timer_mode = parm;
if (timer_mode & TMR_MODE_CLS)
mpu_cmd(midi_dev, 0x3c, 0); /* Use CLS sync */
else if (timer_mode & TMR_MODE_SMPTE)
mpu_cmd(midi_dev, 0x3d, 0); /* Use SMPTE sync */
}
return *(int *) arg = timer_mode;
}
break;
case SNDCTL_TMR_START:
mpu_start_timer(midi_dev);
return 0;
break;
case SNDCTL_TMR_STOP:
tmr_running = 0;
mpu_cmd(midi_dev, 0x01, 0); /* Send MIDI stop */
stop_metronome(midi_dev);
return 0;
break;
case SNDCTL_TMR_CONTINUE:
if (tmr_running)
return 0;
tmr_running = 1;
mpu_cmd(midi_dev, 0x03, 0); /* Send MIDI continue */
return 0;
break;
case SNDCTL_TMR_TIMEBASE:
{
int val = (int) (*(int *) arg);
if (val)
set_timebase(midi_dev, val);
return *(int *) arg = curr_timebase;
}
break;
case SNDCTL_TMR_TEMPO:
{
int val = (int) (*(int *) arg);
int ret;
if (val) {
RANGE (val, 8 , 250 );
if ((ret = mpu_cmd(midi_dev, 0xE0, val)) < 0) {
printf("MPU: Can't set tempo to %d\n", (int) val);
return ret;
}
curr_tempo = val;
}
return *(int *) arg = curr_tempo;
}
break;
case SNDCTL_SEQ_CTRLRATE:
if ((*(int *) arg) != 0) /* Can't change */
return -(EINVAL);
return *(int *) arg = ((curr_tempo * curr_timebase) + 30) / 60;
break;
case SNDCTL_TMR_METRONOME:
metronome_mode = (int) (*(int *) arg);
setup_metronome(midi_dev);
return 0;
break;
default:;
}
return -(EINVAL);
}
static void
mpu_timer_arm(int dev, long time)
{
if (time < 0)
time = curr_ticks + 1;
else if (time <= curr_ticks) /* It's the time */
return;
next_event_time = prev_event_time = time;
return;
}
static struct sound_timer_operations mpu_timer =
{
{"MPU-401 Timer", 0},
10, /* Priority */
0, /* Local device link */
mpu_timer_open,
mpu_timer_close,
mpu_timer_event,
mpu_timer_get_time,
mpu_timer_ioctl,
mpu_timer_arm
};
static void
mpu_timer_interrupt(void)
{
if (!timer_open)
return;
if (!tmr_running)
return;
curr_clocks++;
curr_ticks = clocks2ticks(curr_clocks);
if (curr_ticks >= next_event_time) {
next_event_time = 0xffffffff;
sequencer_timer(0);
}
}
static void
timer_ext_event(struct mpu_config * devc, int event, int parm)
{
int midi_dev = devc->devno;
if (!devc->timer_flag)
return;
switch (event) {
case TMR_CLOCK:
printf("<MIDI clk>");
break;
case TMR_START:
printf("Ext MIDI start\n");
if (!tmr_running)
if (timer_mode & TMR_EXTERNAL) {
tmr_running = 1;
setup_metronome(midi_dev);
next_event_time = 0;
STORE(SEQ_START_TIMER());
}
break;
case TMR_STOP:
printf("Ext MIDI stop\n");
if (timer_mode & TMR_EXTERNAL) {
tmr_running = 0;
stop_metronome(midi_dev);
STORE(SEQ_STOP_TIMER());
}
break;
case TMR_CONTINUE:
printf("Ext MIDI continue\n");
if (timer_mode & TMR_EXTERNAL) {
tmr_running = 1;
setup_metronome(midi_dev);
STORE(SEQ_CONTINUE_TIMER());
}
break;
case TMR_SPP:
printf("Songpos: %d\n", parm);
if (timer_mode & TMR_EXTERNAL) {
STORE(SEQ_SONGPOS(parm));
}
break;
}
}
static void
mpu_timer_init(int midi_dev)
{
struct mpu_config *devc;
int n;
devc = &dev_conf[midi_dev];
if (timer_initialized)
return; /* There is already a similar timer */
timer_initialized = 1;
mpu_timer.devlink = midi_dev;
dev_conf[midi_dev].timer_flag = 1;
if (num_sound_timers >= MAX_TIMER_DEV)
n = 0; /* Overwrite the system timer */
else
n = num_sound_timers++;
sound_timer_devs[n] = &mpu_timer;
if (devc->version < 0x20) /* Original MPU-401 */
timer_caps = TMR_INTERNAL | TMR_EXTERNAL | TMR_MODE_FSK | TMR_MODE_MIDI;
else {
/*
* The version number 2.0 is used (at least) by the
* MusicQuest cards and the Roland Super-MPU.
*
* MusicQuest has given a special meaning to the bits of the
* revision number. The Super-MPU returns 0.
*/
if (devc->revision)
timer_caps |= TMR_EXTERNAL | TMR_MODE_MIDI;
if (devc->revision & 0x02)
timer_caps |= TMR_MODE_CLS;
if (devc->revision & 0x40)
max_timebase = 10; /* Has the 216 and 240 ppqn modes */
}
timer_mode = (TMR_INTERNAL | TMR_MODE_MIDI) & timer_caps;
}
#endif
#endif
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