diff options
Diffstat (limited to 'sys/i386/isa/sound/mpu401.c')
| -rw-r--r-- | sys/i386/isa/sound/mpu401.c | 1626 |
1 files changed, 1537 insertions, 89 deletions
diff --git a/sys/i386/isa/sound/mpu401.c b/sys/i386/isa/sound/mpu401.c index 0b1685d..3728de5 100644 --- a/sys/i386/isa/sound/mpu401.c +++ b/sys/i386/isa/sound/mpu401.c @@ -3,8 +3,6 @@ * * The low level driver for Roland MPU-401 compatible Midi cards. * - * This version supports just the DUMB UART mode. - * * Copyright by Hannu Savolainen 1993 * * Redistribution and use in source and binary forms, with or without @@ -27,51 +25,489 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id$ + * $Id: mpu401.c,v 1.8 1994/08/02 07:40:12 davidg Exp $ */ +#define USE_SEQ_MACROS +#define USE_SIMPLE_MACROS + #include "sound_config.h" #ifdef CONFIGURE_SOUNDCARD #if !defined(EXCLUDE_MPU401) && !defined(EXCLUDE_MIDI) -#define DATAPORT (mpu401_base)/* MPU-401 Data I/O Port on IBM */ -#define COMDPORT (mpu401_base+1) /* MPU-401 Command Port on IBM */ -#define STATPORT (mpu401_base+1) /* MPU-401 Status Port on IBM */ +static int init_sequence[20]; /* NOTE! pos 0 = len, start pos 1. */ +static int timer_mode = TMR_INTERNAL, timer_caps = TMR_INTERNAL; + +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 + unsigned char version, revision; + unsigned 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) \ + {printk("MPU: Invalid buffer pointer %d/%d, s=%d\n", dc->m_ptr, dc->m_left, dc->m_state);dc->m_ptr--;} + int m_busy; + unsigned char m_buf[MBUF_MAX]; + int m_ptr; + int m_state; + int m_left; + unsigned char last_status; + void (*inputintr) (int dev, unsigned char data); + unsigned short controls[32]; + }; + +#define DATAPORT(base) (base) +#define COMDPORT(base) (base+1) +#define STATPORT(base) (base+1) + +#define mpu401_status(base) INB(STATPORT(base)) +#define input_avail(base) (!(mpu401_status(base)&INPUT_AVAIL)) +#define output_ready(base) (!(mpu401_status(base)&OUTPUT_READY)) +#define write_command(base, cmd) OUTB(cmd, COMDPORT(base)) +#define read_data(base) INB(DATAPORT(base)) + +#define write_data(base, byte) OUTB(byte, DATAPORT(base)) + +#define OUTPUT_READY 0x40 +#define INPUT_AVAIL 0x80 +#define MPU_ACK 0xF7 +#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 int irq2dev[16]; + +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 unsigned 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 */ +}; + +#define STORE(cmd) \ +if (devc->opened & OPEN_READ) \ +{ \ + int len; \ + unsigned char obuf[8]; \ + cmd; \ + seq_input_event(obuf, len); \ +} +#define _seqbuf obuf +#define _seqbufptr 0 +#define _SEQ_ADVBUF(x) len=x + +static void +do_midi_msg (struct mpu_config *devc, unsigned char *msg, int mlen) +{ + switch (msg[0] & 0xf0) + { + case 0x90: + if (msg[2] != 0) + { + STORE (SEQ_START_NOTE (devc->synthno, msg[0] & 0x0f, msg[1], msg[2])); + break; + } + msg[2] = 64; + + case 0x80: + STORE (SEQ_STOP_NOTE (devc->synthno, msg[0] & 0x0f, msg[1], msg[2])); + break; + + case 0xA0: + STORE (SEQ_KEY_PRESSURE (devc->synthno, msg[0] & 0x0f, msg[1], msg[2])); + break; + + case 0xB0: + /* + * Fix the controller value (combine MSB and LSB) + */ + if (msg[1] < 64) + { + int ctrl = msg[1]; + + if (ctrl < 32) + { + devc->controls[ctrl] = (msg[2] & 0x7f) << 7; + } + else + { + ctrl -= 32; + devc->controls[ctrl] = + (devc->controls[ctrl] & ~0x7f) | (msg[2] & 0x7f); + } + STORE (SEQ_CONTROL (devc->synthno, msg[0] & 0x0f, + msg[1], devc->controls[ctrl])); + } + else + STORE (SEQ_CONTROL (devc->synthno, msg[0] & 0x0f, msg[1], msg[2])); + break; + + case 0xC0: + STORE (SEQ_SET_PATCH (devc->synthno, msg[0] & 0x0f, msg[1])); + break; + + case 0xD0: + STORE (SEQ_CHN_PRESSURE (devc->synthno, msg[0] & 0x0f, msg[1])); + break; + + case 0xE0: + STORE (SEQ_BENDER (devc->synthno, msg[0] & 0x0f, + (msg[1] % 0x7f) | ((msg[2] & 0x7f) << 7))); + break; + + default: + printk ("MPU: Unknown midi channel message %02x\n", msg[0]); + } +} + +static int +mpu_input_scanner (struct mpu_config *devc, unsigned char midic) +{ + switch (devc->m_state) + { + case ST_INIT: + switch (midic) + { + case 0xf8: + /* Timer overflow */ + break; + + case 0xfc: + printk ("<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: + printk ("<Trk data rq #%d>", midic & 0x0f); + break; + + case 0xf9: + printk ("<conductor rq>"); + break; + + case 0xff: + devc->m_state = ST_SYSMSG; + break; + + default: + if (midic <= 0xef) + { + /* printk("mpu time: %d ", midic); */ + devc->m_state = ST_TIMED; + } + else + printk ("<MPU: Unknown event %02x> ", midic); + } + break; + + case ST_TIMED: + { + int msg = (midic & 0xf0) >> 4; + + devc->m_state = ST_DATABYTE; + if (msg < 8) /* Data byte */ + { + /* printk("midi msg (running status) "); */ + msg = (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, 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: + /* printk("NOP "); */ + break; + + case 0xf9: + /* printk("meas end "); */ + break; + + case 0xfc: + /* printk("data end "); */ + break; + + default: + printk ("Unknown MPU mark %02x\n", midic); + } + } + else + { + devc->last_status = midic; + /* printk("midi msg "); */ + msg -= 8; + devc->m_left = len_tab[msg]; + + devc->m_ptr = 1; + devc->m_buf[0] = midic; -#define mpu401_status() INB(STATPORT) -#define input_avail() (!(mpu401_status()&INPUT_AVAIL)) -#define output_ready() (!(mpu401_status()&OUTPUT_READY)) -#define mpu401_cmd(cmd) OUTB(cmd, COMDPORT) -#define mpu401_read() INB(DATAPORT) -#define mpu401_write(byte) OUTB(byte, DATAPORT) + if (devc->m_left <= 0) + { + devc->m_state = ST_INIT; + do_midi_msg (devc, devc->m_buf, devc->m_ptr); + devc->m_ptr = 0; + } + } + } + break; -#define OUTPUT_READY 0x40 /* Mask for Data Read Redy Bit */ -#define INPUT_AVAIL 0x80 /* Mask for Data Send Ready Bit */ -#define MPU_ACK 0xFE /* MPU-401 Acknowledge Response */ -#define MPU_RESET 0xFF /* MPU-401 Total Reset Command */ -#define UART_MODE_ON 0x3F /* MPU-401 "Dumb UART Mode" */ + case ST_SYSMSG: + switch (midic) + { + case 0xf0: + printk ("<SYX>"); + devc->m_state = ST_SYSEX; + break; -static int mpu401_opened = 0; -static int mpu401_base = 0x330; -static int mpu401_irq; -static int mpu401_detected = 0; -static int my_dev; + case 0xf1: + devc->m_state = ST_MTC; + break; -static int reset_mpu401 (void); -static void (*midi_input_intr) (int dev, unsigned char data); + case 0xf2: + devc->m_state = ST_SONGPOS; + devc->m_ptr = 0; + break; + + case 0xf3: + devc->m_state = ST_SONGSEL; + break; + + case 0xf6: + /* printk("tune_request\n"); */ + devc->m_state = ST_INIT; + + /* + * 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: + /* printk("midi hard reset"); */ + devc->m_state = ST_INIT; + break; + + default: + printk ("unknown MIDI sysmsg %0x\n", midic); + devc->m_state = ST_INIT; + } + break; + + case ST_MTC: + devc->m_state = ST_INIT; + printk ("MTC frame %x02\n", midic); + break; + + case ST_SYSEX: + if (midic == 0xf7) + { + printk ("<EOX>"); + devc->m_state = ST_INIT; + } + else + printk ("%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, devc->m_buf, devc->m_ptr); + devc->m_ptr = 0; + } + break; + + default: + printk ("Bad state %d ", devc->m_state); + devc->m_state = ST_INIT; + } + + return 1; +} + +static void +mpu401_input_loop (struct mpu_config *devc) +{ + unsigned long flags; + int busy; + + DISABLE_INTR (flags); + busy = devc->m_busy; + devc->m_busy = 1; + RESTORE_INTR (flags); + + if (busy) + return; + + while (input_avail (devc->base)) + { + unsigned char c = read_data (devc->base); + + 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 unit) +mpuintr (int irq) { - while (input_avail ()) + struct mpu_config *devc; + int dev; + +#ifdef linux + sti (); +#endif + + if (irq < 1 || irq > 15) { - unsigned char c = mpu401_read (); + printk ("MPU-401: Interrupt #%d?\n", irq); + return; + } - if (mpu401_opened & OPEN_READ) - midi_input_intr (my_dev, c); + dev = irq2dev[irq]; + if (dev == -1) + { + printk ("MPU-401: Interrupt #%d?\n", irq); + return; } + + devc = &dev_conf[dev]; + + if (devc->base != 0 && (devc->opened & OPEN_READ || devc->mode == MODE_SYNTH)) + if (input_avail (devc->base)) + mpu401_input_loop (devc); + } static int @@ -80,16 +516,32 @@ mpu401_open (int dev, int mode, void (*output) (int dev) ) { - if (mpu401_opened) + int err; + struct mpu_config *devc; + + if (dev < 0 || dev >= num_midis) + return RET_ERROR (ENXIO); + + devc = &dev_conf[dev]; + + if (devc->opened) { printk ("MPU-401: Midi busy\n"); return RET_ERROR (EBUSY); } - mpuintr (0); + irq2dev[devc->irq] = dev; + if ((err = snd_set_irq_handler (devc->irq, mpuintr) < 0)) + return err; + + set_uart_mode (dev, devc, 1); + devc->mode = MODE_MIDI; + devc->synthno = 0; - midi_input_intr = input; - mpu401_opened = mode; + mpu401_input_loop (devc); + + devc->inputintr = input; + devc->opened = mode; return 0; } @@ -97,7 +549,20 @@ mpu401_open (int dev, int mode, static void mpu401_close (int dev) { - mpu401_opened = 0; + struct mpu_config *devc; + + devc = &dev_conf[dev]; + + if (devc->uart_mode) + reset_mpu401 (devc); /* + * This disables the UART mode + */ + devc->mode = 0; + + snd_release_irq (devc->irq); + devc->inputintr = NULL; + irq2dev[devc->irq] = -1; + devc->opened = 0; } static int @@ -106,38 +571,180 @@ mpu401_out (int dev, unsigned char midi_byte) int timeout; unsigned long flags; + struct mpu_config *devc; + + devc = &dev_conf[dev]; + +#if 0 /* * Test for input since pending input seems to block the output. */ - DISABLE_INTR (flags); + if (input_avail (devc->base)) + mpu401_input_loop (devc); +#endif + /* + * Sometimes it takes about 13000 loops before the output becomes ready + * (After reset). Normally it takes just about 10 loops. + */ - if (input_avail ()) - mpuintr (0); + for (timeout = 30000; timeout > 0 && !output_ready (devc->base); timeout--); /* + * Wait + */ + DISABLE_INTR (flags); + if (!output_ready (devc->base)) + { + printk ("MPU-401: Send data timeout\n"); + RESTORE_INTR (flags); + return 0; + } + + write_data (devc->base, midi_byte); RESTORE_INTR (flags); + return 1; +} + +static int +mpu401_command (int dev, mpu_command_rec * cmd) +{ + int i, timeout, ok; + int ret = 0; + unsigned long flags; + struct mpu_config *devc; + + devc = &dev_conf[dev]; + + if (devc->uart_mode) /* + * Not possible in UART mode + */ + { + printk ("MPU-401 commands not possible in the UART mode\n"); + return RET_ERROR (EINVAL); + } /* - * Sometimes it takes about 13000 loops before the output becomes ready + * Test for input since pending input seems to block the output. + */ + if (input_avail (devc->base)) + mpu401_input_loop (devc); + + /* + * Sometimes it takes about 30000 loops before the output becomes ready * (After reset). Normally it takes just about 10 loops. */ - for (timeout = 30000; timeout > 0 && !output_ready (); timeout--); /* Wait */ + for (timeout = 500000; timeout > 0 && !output_ready (devc->base); timeout--); - if (!output_ready ()) + DISABLE_INTR (flags); + if (!output_ready (devc->base)) { - printk ("MPU-401: Timeout\n"); - return 0; + printk ("MPU-401: Command (0x%x) timeout\n", (int) cmd->cmd); + RESTORE_INTR (flags); + return RET_ERROR (EIO); } - mpu401_write (midi_byte); - return 1; + write_command (devc->base, cmd->cmd); + ok = 0; + for (timeout = 500000; timeout > 0 && !ok; timeout--) + if (input_avail (devc->base)) + if (mpu_input_scanner (devc, read_data (devc->base)) == MPU_ACK) + ok = 1; + + if (!ok) + { + RESTORE_INTR (flags); + printk ("MPU: No ACK to command (0x%x)\n", (int) cmd->cmd); + return RET_ERROR (EIO); + } + + if (cmd->nr_args) + for (i = 0; i < cmd->nr_args; i++) + { + for (timeout = 30000; timeout > 0 && !output_ready (devc->base); timeout--); + + if (!mpu401_out (dev, cmd->data[i])) + { + RESTORE_INTR (flags); + printk ("MPU: Command (0x%x), parm send failed.\n", (int) cmd->cmd); + return RET_ERROR (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->base)) + { + cmd->data[i] = read_data (devc->base); + ok = 1; + } + + if (!ok) + { + RESTORE_INTR (flags); + printk ("MPU: No response(%d) to command (0x%x)\n", i, (int) cmd->cmd); + return RET_ERROR (EIO); + } + } + + RESTORE_INTR (flags); + + return ret; } static int -mpu401_command (int dev, unsigned char midi_byte) +exec_cmd (int dev, int cmd, int data) { - return 1; + 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 (unsigned char) rec.data[0]; +} + +static int +mpu401_prefix_cmd (int dev, unsigned char status) +{ + struct mpu_config *devc = &dev_conf[dev]; + + if (devc->uart_mode) + return 1; + + if (status < 0xf0) + { + if (exec_cmd (dev, 0xD0, 0) < 0) + return 0; + + return 1; + } + + switch (status) + { + case 0xF0: + if (exec_cmd (dev, 0xDF, 0) < 0) + return 0; + + return 1; + break; + + default: + return 0; + } + + return 0; } static int @@ -155,7 +762,45 @@ mpu401_end_read (int dev) static int mpu401_ioctl (int dev, unsigned cmd, unsigned arg) { - return RET_ERROR (EINVAL); + struct mpu_config *devc; + + devc = &dev_conf[dev]; + + switch (cmd) + { + case 1: + IOCTL_FROM_USER ((char *) &init_sequence, (char *) arg, 0, sizeof (init_sequence)); + return 0; + break; + + case SNDCTL_MIDI_MPUMODE: + if (devc->version == 0) + { + printk ("MPU-401: Intelligent mode not supported by the HW\n"); + return RET_ERROR (EINVAL); + } + set_uart_mode (dev, devc, !IOCTL_IN (arg)); + return 0; + break; + + case SNDCTL_MIDI_MPUCMD: + { + int ret; + mpu_command_rec rec; + + IOCTL_FROM_USER ((char *) &rec, (char *) arg, 0, sizeof (rec)); + + if ((ret = mpu401_command (dev, &rec)) < 0) + return ret; + + IOCTL_TO_USER ((char *) arg, 0, (char *) &rec, sizeof (rec)); + return 0; + } + break; + + default: + return RET_ERROR (EINVAL); + } } static void @@ -166,12 +811,135 @@ mpu401_kick (int dev) static int mpu401_buffer_status (int dev) { - return 0; /* No data in buffers */ + return 0; /* + * No data in buffers + */ +} + +static int +mpu_synth_ioctl (int dev, + unsigned int cmd, unsigned int arg) +{ + int midi_dev; + struct mpu_config *devc; + + midi_dev = synth_devs[dev]->midi_dev; + + if (midi_dev < 0 || midi_dev > num_midis) + return RET_ERROR (ENXIO); + + devc = &dev_conf[midi_dev]; + + switch (cmd) + { + + case SNDCTL_SYNTH_INFO: + IOCTL_TO_USER ((char *) arg, 0, &mpu_synth_info[midi_dev], + sizeof (struct synth_info)); + + return 0; + break; + + case SNDCTL_SYNTH_MEMAVL: + return 0x7fffffff; + break; + + default: + return RET_ERROR (EINVAL); + } } -static struct midi_operations mpu401_operations = +static int +mpu_synth_open (int dev, int mode) { - {"MPU-401", 0, 0, SNDCARD_MPU401}, + int midi_dev, err; + struct mpu_config *devc; + + midi_dev = synth_devs[dev]->midi_dev; + + if (midi_dev < 0 || midi_dev > num_midis) + return RET_ERROR (ENXIO); + + devc = &dev_conf[midi_dev]; + + if (devc->opened) + { + printk ("MPU-401: Midi busy\n"); + return RET_ERROR (EBUSY); + } + + devc->opened = mode; + devc->mode = MODE_SYNTH; + devc->synthno = dev; + + devc->inputintr = NULL; + irq2dev[devc->irq] = midi_dev; + if ((err = snd_set_irq_handler (devc->irq, mpuintr) < 0)) + return err; + + reset_mpu401 (devc); + + if (mode & OPEN_READ) + { + exec_cmd (midi_dev, 0x34, 0); /* Return timing bytes in stop mode */ + exec_cmd (midi_dev, 0x8B, 0); /* Enable data 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]; + exec_cmd (midi_dev, 0x15, 0); /* Stop recording, playback and MIDI */ + exec_cmd (midi_dev, 0x8a, 0); /* Disable data in stopped mode */ + + devc->opened = 0; + devc->mode = 0; + snd_release_irq (devc->irq); + devc->inputintr = NULL; + irq2dev[devc->irq] = -1; +} + +#define MIDI_SYNTH_NAME "MPU-401 UART Midi" +#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT +#include "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 +}; + +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, mpu401_open, mpu401_close, mpu401_ioctl, @@ -179,105 +947,785 @@ static struct midi_operations mpu401_operations = mpu401_start_read, mpu401_end_read, mpu401_kick, - mpu401_command, - mpu401_buffer_status + 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 = exec_cmd (num_midis, 0xAC, 0)) < 0) + return; + devc->version = tmp; + + if ((tmp = exec_cmd (num_midis, 0xAD, 0)) < 0) + return; + devc->revision = tmp; +} long attach_mpu401 (long mem_start, struct address_info *hw_config) { - int ok, timeout; + int i; unsigned long flags; + char revision_char; - mpu401_base = hw_config->io_base; - mpu401_irq = hw_config->irq; + struct mpu_config *devc; - if (!mpu401_detected) - return RET_ERROR (EIO); + for (i = 0; i < 16; i++) + irq2dev[i] = -1; - DISABLE_INTR (flags); - for (timeout = 30000; timeout < 0 && !output_ready (); timeout--); /* Wait */ - mpu401_cmd (UART_MODE_ON); + if (num_midis >= MAX_MIDI_DEV) + { + printk ("MPU-401: Too many midi devices detected\n"); + return mem_start; + } - ok = 0; - for (timeout = 50000; timeout > 0 && !ok; timeout--) - if (input_avail ()) - if (mpu401_read () == MPU_ACK) - ok = 1; + devc = &dev_conf[num_midis]; + + devc->base = hw_config->io_base; + 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; + + for (i = 0; i < 32; i++) + devc->controls[i] = 0x2000; + + if (!reset_mpu401 (devc)) + return mem_start; + DISABLE_INTR (flags); + mpu401_chk_version (devc); + if (devc->version == 0) + mpu401_chk_version (devc); RESTORE_INTR (flags); + if (devc->version == 0) + { + memcpy ((char *) &mpu401_synth_operations[num_midis], + (char *) &std_midi_synth, + sizeof (struct synth_operations)); + } + else + { + devc->capabilities |= MPU_CAP_INTLG; /* Supports intelligent mode */ + memcpy ((char *) &mpu401_synth_operations[num_midis], + (char *) &mpu401_synth_proto, + sizeof (struct synth_operations)); + } + + memcpy ((char *) &mpu401_midi_operations[num_midis], + (char *) &mpu401_midi_proto, + sizeof (struct midi_operations)); + + mpu401_midi_operations[num_midis].converter = + &mpu401_synth_operations[num_midis]; + + memcpy ((char *) &mpu_synth_info[num_midis], + (char *) &mpu_synth_info_proto, + 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' : ' '; +#ifdef __FreeBSD__ + printk ("snd5: <MQX-%d%c MIDI Interface>", +#else + printk (" <MQX-%d%c MIDI Interface>", +#endif + ports, + revision_char); +#ifndef SCO + sprintf (mpu_synth_info[num_midis].name, + "MQX-%d%c MIDI Interface #%d", + ports, + revision_char, + n_mpu_devs); +#endif + } + else + { + + revision_char = devc->revision ? devc->revision + '@' : ' '; + if (devc->revision > ('Z' - '@')) + revision_char = '+'; + + devc->capabilities |= MPU_CAP_SYNC | MPU_CAP_FSK; + #ifdef __FreeBSD__ - printk ("snd5: <Roland MPU-401>"); + printk ("snd5: <MPU-401 MIDI Interface %d.%d%c>", #else - printk (" <Roland MPU-401>"); + printk (" <MPU-401 MIDI Interface %d.%d%c>", +#endif + (devc->version & 0xf0) >> 4, + devc->version & 0x0f, + revision_char); +#ifndef SCO + sprintf (mpu_synth_info[num_midis].name, + "MPU-401 %d.%d%c Midi interface #%d", + (devc->version & 0xf0) >> 4, + devc->version & 0x0f, + revision_char, + n_mpu_devs); +#endif + } + +#ifndef SCO + strcpy (mpu401_midi_operations[num_midis].info.name, + mpu_synth_info[num_midis].name); #endif - my_dev = num_midis; - mpu401_dev = num_midis; - midi_devs[num_midis++] = &mpu401_operations; + 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) /* Has timer */ + mpu_timer_init (num_midis); + + midi_devs[num_midis++] = &mpu401_midi_operations[devc->devno]; return mem_start; } static int -reset_mpu401 (void) +reset_mpu401 (struct mpu_config *devc) { unsigned 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; - DISABLE_INTR (flags); + timeout_limit = devc->initialized ? 30000 : 100000; + devc->initialized = 1; for (n = 0; n < 2 && !ok; n++) { - for (timeout = 30000; timeout < 0 && !output_ready (); timeout--); /* Wait */ - mpu401_cmd (MPU_RESET); /* Send MPU-401 RESET Command */ + for (timeout = timeout_limit; timeout > 0 && !ok; timeout--) + ok = output_ready (devc->base); + + write_command (devc->base, 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 = 50000; timeout > 0 && !ok; timeout--) - if (input_avail ()) - if (mpu401_read () == MPU_ACK) - ok = 1; + for (timeout = timeout_limit * 2; timeout > 0 && !ok; timeout--) + { + DISABLE_INTR (flags); + if (input_avail (devc->base)) + if (read_data (devc->base) == MPU_ACK) + ok = 1; + RESTORE_INTR (flags); + } } - mpu401_opened = 0; - if (ok) - mpuintr (0); /* Flush input before enabling interrupts */ - - RESTORE_INTR (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->version == 0) + return; + + if ((devc->uart_mode == 0) == (arg == 0)) + return; /* Already set */ + + reset_mpu401 (devc); /* This exits the uart mode */ + + if (arg) + { + if (exec_cmd (dev, UART_MODE_ON, 0) < 0) + { + printk ("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; + + ok = reset_mpu401 (&tmp_devc); + + return ok; +} + +/***************************************************** + * Timer stuff + ****************************************************/ - mpu401_base = hw_config->io_base; - mpu401_irq = hw_config->irq; +#if !defined(EXCLUDE_SEQUENCER) - if (snd_set_irq_handler (mpu401_irq, mpuintr) < 0) +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 unsigned long next_event_time; +static volatile unsigned long curr_ticks, curr_clocks; +static unsigned long prev_event_time; +static int metronome_mode; + +static unsigned long +clocks2ticks (unsigned 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 it's 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 + 23) / 24; + if (hw_val > max_timebase) + hw_val = max_timebase; + + if (exec_cmd (midi_dev, 0xC0 | (hw_val & 0x0f), 0) < 0) + { + printk ("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) +{ + unsigned long flags; + + DISABLE_INTR (flags); + next_event_time = 0xffffffff; + prev_event_time = 0; + curr_ticks = curr_clocks = 0; + RESTORE_INTR (flags); +} + +static void +set_timer_mode (int midi_dev) +{ + if (timer_mode & TMR_MODE_CLS) + exec_cmd (midi_dev, 0x3c, 0); /* Use CLS sync */ + else if (timer_mode & TMR_MODE_SMPTE) + exec_cmd (midi_dev, 0x3d, 0); /* Use SMPTE sync */ + + if (timer_mode & TMR_INTERNAL) + { + exec_cmd (midi_dev, 0x80, 0); /* Use MIDI sync */ + } + else + { + if (timer_mode & (TMR_MODE_MIDI | TMR_MODE_CLS)) + { + exec_cmd (midi_dev, 0x82, 0); /* Use MIDI sync */ + exec_cmd (midi_dev, 0x91, 0); /* Enable ext MIDI ctrl */ + } + else if (timer_mode & TMR_MODE_FSK) + exec_cmd (midi_dev, 0x81, 0); /* Use FSK sync */ + } +} + +static void +stop_metronome (int midi_dev) +{ + exec_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 = ((unsigned) metronome_mode >> 24) & 0xff; + denominator = ((unsigned) metronome_mode >> 16) & 0xff; + clks_per_click = ((unsigned) metronome_mode >> 8) & 0xff; + num_32nds_per_beat = (unsigned) metronome_mode & 0xff; + beats_per_measure = (numerator * 4) >> denominator; + + if (!metronome_mode) + exec_cmd (midi_dev, 0x84, 0); /* Disable metronome */ + else + { + exec_cmd (midi_dev, 0xE4, clks_per_click); + exec_cmd (midi_dev, 0xE6, beats_per_measure); + exec_cmd (midi_dev, 0x83, 0); /* Enable metronome without accents */ + } +} + +static int +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) + { + exec_cmd (midi_dev, 0x02, 0); /* Send MIDI start */ + tmr_running = 1; + return TIMER_NOT_ARMED; + } + else + { + exec_cmd (midi_dev, 0x35, 0); /* Enable mode messages to PC */ + exec_cmd (midi_dev, 0x38, 0); /* Enable sys common messages to PC */ + exec_cmd (midi_dev, 0x39, 0); /* Enable real time messages to PC */ + exec_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 RET_ERROR (EBUSY); + + tmr_reset (); + curr_tempo = 50; + exec_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); + + exec_cmd (midi_dev, 0xe7, 0x04); /* Send all clocks to host */ + exec_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; + exec_cmd (midi_dev, 0x15, 0); /* Stop all */ + exec_cmd (midi_dev, 0x94, 0); /* Disable clock to host */ + exec_cmd (midi_dev, 0x8c, 0); /* Disable measure end messages to host */ + stop_metronome (midi_dev); +} + +static int +mpu_timer_event (int dev, unsigned char *event) +{ + unsigned char command = event[1]; + unsigned long parm = *(unsigned 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 start_timer (midi_dev); + break; + + case TMR_STOP: + exec_cmd (midi_dev, 0x01, 0); /* Send MIDI stop */ + stop_metronome (midi_dev); + tmr_running = 0; + break; + + case TMR_CONTINUE: + if (tmr_running) + break; + exec_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 (exec_cmd (midi_dev, 0xE0, parm) < 0) + printk ("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 unsigned long +mpu_timer_get_time (int dev) +{ + if (!timer_open) return 0; - ok = reset_mpu401 (); + return curr_ticks; +} - mpu401_detected = ok; - return ok; +static int +mpu_timer_ioctl (int dev, + unsigned int command, unsigned int arg) +{ + int midi_dev = sound_timer_devs[dev]->devlink; + + switch (command) + { + case SNDCTL_TMR_SOURCE: + { + int parm = IOCTL_IN (arg) & timer_caps; + + if (parm != 0) + { + timer_mode = parm; + + if (timer_mode & TMR_MODE_CLS) + exec_cmd (midi_dev, 0x3c, 0); /* Use CLS sync */ + else if (timer_mode & TMR_MODE_SMPTE) + exec_cmd (midi_dev, 0x3d, 0); /* Use SMPTE sync */ + } + + return IOCTL_OUT (arg, timer_mode); + } + break; + + case SNDCTL_TMR_START: + if (tmr_running) + return 0; + start_timer (midi_dev); + return 0; + break; + + case SNDCTL_TMR_STOP: + tmr_running = 0; + exec_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; + exec_cmd (midi_dev, 0x03, 0); /* Send MIDI continue */ + return 0; + break; + + case SNDCTL_TMR_TIMEBASE: + { + int val = IOCTL_IN (arg); + + if (val) + set_timebase (midi_dev, val); + + return IOCTL_OUT (arg, curr_timebase); + } + break; + + case SNDCTL_TMR_TEMPO: + { + int val = IOCTL_IN (arg); + int ret; + + if (val) + { + if (val < 8) + val = 8; + if (val > 250) + val = 250; + if ((ret = exec_cmd (midi_dev, 0xE0, val)) < 0) + { + printk ("MPU: Can't set tempo to %d\n", (int) val); + return ret; + } + + curr_tempo = val; + } + + return IOCTL_OUT (arg, curr_tempo); + } + break; + + case SNDCTL_SEQ_CTRLRATE: + if (IOCTL_IN (arg) != 0) /* Can't change */ + return RET_ERROR (EINVAL); + + return IOCTL_OUT (arg, ((curr_tempo * curr_timebase) + 30) / 60); + break; + + case SNDCTL_TMR_METRONOME: + metronome_mode = IOCTL_IN (arg); + setup_metronome (midi_dev); + return 0; + break; + + default: + } + + return RET_ERROR (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 (); + } } +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: + printk ("<MIDI clk>"); + break; + + case TMR_START: + printk ("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: + printk ("Ext MIDI stop\n"); + if (timer_mode & TMR_EXTERNAL) + { + tmr_running = 0; + stop_metronome (midi_dev); + STORE (SEQ_STOP_TIMER ()); + } + break; + + case TMR_CONTINUE: + printk ("Ext MIDI continue\n"); + if (timer_mode & TMR_EXTERNAL) + { + tmr_running = 1; + setup_metronome (midi_dev); + STORE (SEQ_CONTINUE_TIMER ()); + } + break; + + case TMR_SPP: + printk ("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 1 + if (num_sound_timers >= MAX_TIMER_DEV) + n = 0; /* Overwrite the system timer */ + else + n = num_sound_timers++; +#else + n = 0; +#endif + 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 0 + if (devc->revision & 0x04) + timer_caps |= TMR_MODE_SMPTE; +#endif + + 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 #endif |
