diff options
Diffstat (limited to 'sys/i386/isa/sound/sb16_midi.c')
| -rw-r--r-- | sys/i386/isa/sound/sb16_midi.c | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/sys/i386/isa/sound/sb16_midi.c b/sys/i386/isa/sound/sb16_midi.c deleted file mode 100644 index 86b338f..0000000 --- a/sys/i386/isa/sound/sb16_midi.c +++ /dev/null @@ -1,311 +0,0 @@ -/* - * sound/sb16_midi.c - * - * The low level driver for the MPU-401 UART emulation of the SB16. - * - * 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. - * - * $FreeBSD$ - * - */ - -#include <i386/isa/sound/sound_config.h> -#include <i386/isa/sound/sbcard.h> - -#if defined(CONFIG_SB) && defined(CONFIG_SB16) && defined(CONFIG_MIDI) - -#include "sb.h" - -#ifdef PC98 -#define DATAPORT (sb16midi_base) -#define COMDPORT (sb16midi_base+0x100) -#define STATPORT (sb16midi_base+0x100) -#else -#define DATAPORT (sb16midi_base) -#define COMDPORT (sb16midi_base+1) -#define STATPORT (sb16midi_base+1) -#endif - -extern sound_os_info *sb_osp; - -#define sb16midi_status() inb( STATPORT) -#define input_avail() (!(sb16midi_status()&INPUT_AVAIL)) -#define output_ready() (!(sb16midi_status()&OUTPUT_READY)) -#define sb16midi_cmd(cmd) outb( COMDPORT, cmd) -#define sb16midi_read() inb( DATAPORT) -#define sb16midi_write(byte) outb( DATAPORT, byte) - -#define OUTPUT_READY 0x40 -#define INPUT_AVAIL 0x80 -#define MPU_ACK 0xFE -#define MPU_RESET 0xFF -#define UART_MODE_ON 0x3F - -static int sb16midi_opened = 0; -#ifdef PC98 -static int sb16midi_base = 0x80d2; -#else -static int sb16midi_base = 0x330; -#endif -static int sb16midi_detected = 0; -static int my_dev; -extern int sbc_base; - -static int reset_sb16midi(void); -static void (*midi_input_intr) (int dev, u_char data); -static volatile u_char input_byte; - -static void -sb16midi_input_loop(void) -{ - while (input_avail()) { - u_char c = sb16midi_read(); - - if (c == MPU_ACK) - input_byte = c; - else if (sb16midi_opened & OPEN_READ && midi_input_intr) - midi_input_intr(my_dev, c); - } -} - -void -sb16midiintr(int unit) -{ - if (input_avail()) - sb16midi_input_loop(); -} - -static int -sb16midi_open(int dev, int mode, - void (*input) (int dev, u_char data), - void (*output) (int dev) -) -{ - if (sb16midi_opened) { - return -(EBUSY); - } - sb16midi_input_loop(); - - midi_input_intr = input; - sb16midi_opened = mode; - - return 0; -} - -static void -sb16midi_close(int dev) -{ - sb16midi_opened = 0; -} - -static int -sb16midi_out(int dev, u_char midi_byte) -{ - int timeout; - u_long flags; - - /* - * Test for input since pending input seems to block the output. - */ - - flags = splhigh(); - - if (input_avail()) - sb16midi_input_loop(); - - splx(flags); - - /* - * Sometimes it takes about 13000 loops before the output becomes - * ready (After reset). Normally it takes just about 10 loops. - */ - - for (timeout = 30000; timeout > 0 && !output_ready(); timeout--); /* Wait */ - - if (!output_ready()) { - printf("MPU-401: Timeout\n"); - return 0; - } - sb16midi_write(midi_byte); - return 1; -} - -static int -sb16midi_start_read(int dev) -{ - return 0; -} - -static int -sb16midi_end_read(int dev) -{ - return 0; -} - -static int -sb16midi_ioctl(int dev, u_int cmd, ioctl_arg arg) -{ - return -(EINVAL); -} - -static void -sb16midi_kick(int dev) -{ -} - -static int -sb16midi_buffer_status(int dev) -{ - return 0; /* No data in buffers */ -} - -#define MIDI_SYNTH_NAME "SoundBlaster 16 Midi" -#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT -#include <i386/isa/sound/midi_synth.h> - -static struct midi_operations sb16midi_operations = -{ - {"SoundBlaster 16 Midi", 0, 0, SNDCARD_SB16MIDI}, - &std_midi_synth, - {0}, - sb16midi_open, - sb16midi_close, - sb16midi_ioctl, - sb16midi_out, - sb16midi_start_read, - sb16midi_end_read, - sb16midi_kick, - NULL, - sb16midi_buffer_status, - NULL -}; - - -void -attach_sb16midi(struct address_info * hw_config) -{ - int ok, timeout; - u_long flags; - - sb16midi_base = hw_config->io_base; - - if (!sb16midi_detected) - return; - - flags = splhigh(); - for (timeout = 30000; timeout < 0 && !output_ready(); timeout--); /* Wait */ - input_byte = 0; - sb16midi_cmd(UART_MODE_ON); - - ok = 0; - for (timeout = 50000; timeout > 0 && !ok; timeout--) - if (input_byte == MPU_ACK) - ok = 1; - else if (input_avail()) - if (sb16midi_read() == MPU_ACK) - ok = 1; - - splx(flags); - - if (num_midis >= MAX_MIDI_DEV) { - printf("Sound: Too many midi devices detected\n"); - return; - } - - conf_printf("SoundBlaster MPU-401", hw_config); - std_midi_synth.midi_dev = my_dev = num_midis; - midi_devs[num_midis++] = &sb16midi_operations; - return; -} - -static int -reset_sb16midi(void) -{ - int ok, timeout, n; - - /* - * Send the RESET command. Try again if no success at the first time. - */ - - if (inb(STATPORT) == 0xff) - return 0; - - ok = 0; - - /* flags = splhigh(); */ - - for (n = 0; n < 2 && !ok; n++) { - for (timeout = 30000; timeout < 0 && !output_ready(); timeout--); /* Wait */ - input_byte = 0; - sb16midi_cmd(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_byte == MPU_ACK) /* Interrupt */ - ok = 1; - else if (input_avail()) - if (sb16midi_read() == MPU_ACK) - ok = 1; - - } - - sb16midi_opened = 0; - if (ok) - sb16midi_input_loop(); /* Flush input before enabling - * interrupts */ - - /* splx(flags); */ - - return ok; -} - - -int -probe_sb16midi(struct address_info * hw_config) -{ - int ok = 0; - struct address_info *sb_config; - - if (sbc_major < 4) - return 0; /* Not a SB16 */ - - if (!(sb_config = sound_getconf(SNDCARD_SB))) { - printf("SB16 Error: Plain SB not configured\n"); - return 0; - } - - sb16midi_base = hw_config->io_base; - - ok = reset_sb16midi(); - - sb16midi_detected = ok; - return ok; -} - -#endif - |
