6b8afe4d37
SBlaster/Adlib/ProAudio Spectrum/Gravis/etc cards. This is a BETA test driver, please test it and get back to me!
156 lines
2.6 KiB
C
156 lines
2.6 KiB
C
/* UWM -- comments to soft-eng@cs.uwm.edu */
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#define ALL_EXTERNAL_TO_ME
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#include "sound_config.h"
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#ifdef CONFIGURE_SOUNDCARD
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#include "pas.h"
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#define ESUCCESS 0
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#if !defined(EXCLUDE_PRO_MIDI) && !defined(EXCLUDE_CHIP_MIDI)
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/** Structure for handling operations **/
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static struct generic_midi_operations pro_midi_operations = {
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{"Pro_Audio_Spectrum 16 MV101", 0},
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pro_midi_open,
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pro_midi_close,
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pro_midi_write,
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pro_midi_read
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};
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/*
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* Note! Note! Note!
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* Follow the same model for any other attach function you
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* may write
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*/
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long pro_midi_attach( long mem_start)
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{
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pro_midi_dev = num_generic_midis;
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generic_midi_devs[num_generic_midis++] = &pro_midi_operations;
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return mem_start;
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}
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int pro_midi_open(int dev, int mode)
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{
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int intr_mask, s;
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s = splhigh();
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/* Reset the input and output FIFO pointers */
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outb(MIDI_CONTROL,M_C_RESET_INPUT_FIFO | M_C_RESET_OUTPUT_FIFO);
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/* Get the interrupt status */
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intr_mask = inb(INTERRUPT_MASK);
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/* Enable MIDI IRQ */
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intr_mask |= I_M_MIDI_IRQ_ENABLE;
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outb(INTERRUPT_MASK, intr_mask);
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/* Enable READ/WRITE on MIDI port. This part is quite unsure though */
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outb(MIDI_CONTROL,M_C_ENA_OUTPUT_IRQ | M_C_ENA_INPUT_IRQ);
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/* Acknowledge pending interrupts */
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outb(MIDI_STATUS,0xff);
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splx(s);
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return(ESUCCESS);
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}
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void pro_midi_close(int dev)
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{
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int intr_mask;
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/* Clean up */
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outb(MIDI_CONTROL,M_C_RESET_INPUT_FIFO | M_C_RESET_OUTPUT_FIFO);
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intr_mask = inb(INTERRUPT_MASK);
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intr_mask &= ~I_M_MIDI_IRQ_ENABLE;
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outb(INTERRUPT_MASK,intr_mask);
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return;
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}
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int pro_midi_write(int dev, struct uio *uio)
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{
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int s;
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unsigned char data;
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/* printf("midi: Going to do write routine..\n"); */
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while(uio->uio_resid) {
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if ( uiomove(&data,1,uio) ) return(ENOTTY);
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s = splhigh();
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DELAY(30);
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outb(MIDI_DATA,data);
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DELAY(70); /* Ze best pause.. find a better one if
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* you can :)
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*/
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splx(s);
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}
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return(ESUCCESS);
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}
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int pro_midi_read(int dev, struct uio *uio)
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{
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int s;
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unsigned char data;
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s = splhigh();
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/* For each uio_iov[] entry .... */
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while (uio->uio_resid) {
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if((( inb(MIDI_STATUS) & M_S_INPUT_AVAIL) == 0 ) &&
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((inb(MIDI_FIFO_STATUS) & MIDI_INPUT_AVAILABLE) == 0 ) )
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data = 0xfe;
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else
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data = inb(MIDI_DATA);
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if ( uiomove(&data, 1 , uio)) {
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printf("midi: Bad copyout()!\n");
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return(ENOTTY);
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}
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}
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splx(s);
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return(ESUCCESS);
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}
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#endif
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#endif
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