diff options
Diffstat (limited to 'sys/i386/isa/sound/mpu401.c')
-rw-r--r-- | sys/i386/isa/sound/mpu401.c | 1631 |
1 files changed, 1631 insertions, 0 deletions
diff --git a/sys/i386/isa/sound/mpu401.c b/sys/i386/isa/sound/mpu401.c new file mode 100644 index 0000000..0bd1412 --- /dev/null +++ b/sys/i386/isa/sound/mpu401.c @@ -0,0 +1,1631 @@ +/* + * 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' : ' '; + snprintf(mpu_synth_info[num_midis].name, + sizeof(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; + + snprintf(mpu_synth_info[num_midis].name, + sizeof(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 |