patch-2.0.1 linux/drivers/sound/sb_dsp.c
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- Lines: 1662
- Date:
Thu Jan 1 02:00:00 1970
- Orig file:
v2.0.0/linux/drivers/sound/sb_dsp.c
- Orig date:
Fri Apr 12 15:52:03 1996
diff -u --recursive --new-file v2.0.0/linux/drivers/sound/sb_dsp.c linux/drivers/sound/sb_dsp.c
@@ -1,1661 +0,0 @@
-/*
- * sound/sb_dsp.c
- *
- * The low level driver for the SoundBlaster DSP chip (SB1.0 to 2.1, SB Pro).
- */
-/*
- * Copyright by Hannu Savolainen 1993-1996
- *
- * 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.
- */
-#include <linux/config.h>
-
-/*
- * Modified:
- * Hunyue Yau Jan 6 1994
- * Added code to support Sound Galaxy NX Pro
- *
- * JRA Gibson April 1995
- * Code added for MV ProSonic/Jazz 16 in 16 bit mode
- */
-
-#include "sound_config.h"
-
-#if defined(CONFIG_SB)
-
-#include "sb.h"
-#include "sb_mixer.h"
-#undef SB_TEST_IRQ
-
-int sbc_base = 0;
-static int sbc_irq = 0, sbc_dma;
-static int open_mode = 0; /* Read, write or both */
-int Jazz16_detected = 0;
-int AudioDrive = 0; /* 1=ES1688 detected */
-static int ess_mpu_irq = 0;
-int sb_no_recording = 0;
-static int dsp_count = 0;
-static int trigger_bits;
-static int mpu_base = 0, mpu_irq = 0;
-static int sb16_inited = 0;
-
-/*
- * The DSP channel can be used either for input or output. Variable
- * 'sb_irq_mode' will be set when the program calls read or write first time
- * after open. Current version doesn't support mode changes without closing
- * and reopening the device. Support for this feature may be implemented in a
- * future version of this driver.
- */
-
-int sb_dsp_ok = 0; /*
-
-
- * * * * Set to 1 after successful
- * initialization * */
-static int midi_disabled = 0;
-int sb_dsp_highspeed = 0;
-int sbc_major = 0, sbc_minor = 0;
-static int dsp_stereo = 0;
-static int dsp_current_speed = DSP_DEFAULT_SPEED;
-static int dsp_requested_speed = DSP_DEFAULT_SPEED;
-static int sb16 = 0;
-static int irq_verified = 0;
-
-int sb_midi_mode = NORMAL_MIDI;
-int sb_midi_busy = 0;
-int sb_dsp_busy = 0;
-
-volatile int sb_irq_mode = IMODE_NONE;
-static volatile int irq_ok = 0;
-
-static int dma8 = 1;
-static int dsp_16bit = 0;
-
-/* 16 bit support
- */
-
-static int dma16 = 1;
-
-static int dsp_set_bits (int arg);
-static int initialize_ProSonic16 (void);
-
-/* end of 16 bit support
- */
-
-int sb_duplex_midi = 0;
-static int my_dev = 0;
-
-volatile int sb_intr_active = 0;
-
-static int dsp_speed (int);
-static int dsp_set_stereo (int mode);
-static void sb_dsp_reset (int dev);
-static void dsp_get_vers (struct address_info *hw_config);
-int *sb_osp = NULL;
-
-#if defined(CONFIG_MIDI) || defined(CONFIG_AUDIO)
-
-/*
- * Common code for the midi and pcm functions
- */
-
-int
-sb_dsp_command (unsigned char val)
-{
- int i;
- unsigned long limit;
-
- limit = jiffies + HZ / 10; /*
- * The timeout is 0.1 seconds
- */
-
- /*
- * Note! the i<500000 is an emergency exit. The sb_dsp_command() is sometimes
- * called while interrupts are disabled. This means that the timer is
- * disabled also. However the timeout situation is a abnormal condition.
- * Normally the DSP should be ready to accept commands after just couple of
- * loops.
- */
-
- for (i = 0; i < 500000 && jiffies < limit; i++)
- {
- if ((inb (DSP_STATUS) & 0x80) == 0)
- {
- outb (val, DSP_COMMAND);
- return 1;
- }
- }
-
- printk ("SoundBlaster: DSP Command(%x) Timeout.\n", val);
- return 0;
-}
-
-static int
-ess_write (unsigned char reg, unsigned char data)
-{
- /* Write a byte to an extended mode register of ES1688 */
-
- if (!sb_dsp_command (reg))
- return 0;
-
- return sb_dsp_command (data);
-}
-
-static int
-ess_read (unsigned char reg)
-{
-/* Read a byte from an extended mode register of ES1688 */
-
- int i;
-
- if (!sb_dsp_command (0xc0)) /* Read register command */
- return -1;
-
- if (!sb_dsp_command (reg))
- return -1;
-
- for (i = 1000; i; i--)
- {
- if (inb (DSP_DATA_AVAIL) & 0x80)
- return inb (DSP_READ);
- }
-
- return -1;
-}
-
-void
-sbintr (int irq, void *dev_id, struct pt_regs *dummy)
-{
- int status;
-
- if (sb16 && !AudioDrive)
- {
- unsigned char src = sb_getmixer (IRQ_STAT); /* Interrupt source register */
-
- if (src & 3)
- sb16_dsp_interrupt (irq);
-
-#ifdef CONFIG_MIDI
- if (src & 4)
- sb16midiintr (irq); /*
- * SB MPU401 interrupt
- */
-#endif
-
- if (!(src & 1))
- return; /*
- * Not a DSP interrupt
- */
- }
-
- status = inb (DSP_DATA_AVAIL); /*
- * Clear interrupt
- */
- if (sb_intr_active)
- switch (sb_irq_mode)
- {
- case IMODE_OUTPUT:
- if (!AudioDrive)
- sb_intr_active = 0;
- DMAbuf_outputintr (my_dev, 1);
- break;
-
- case IMODE_INPUT:
- if (!AudioDrive)
- sb_intr_active = 0;
- DMAbuf_inputintr (my_dev);
- break;
-
- case IMODE_INIT:
- sb_intr_active = 0;
- irq_ok = 1;
- break;
-
- case IMODE_MIDI:
-#ifdef CONFIG_MIDI
- sb_midi_interrupt (irq);
-#endif
- break;
-
- default:
- printk ("SoundBlaster: Unexpected interrupt\n");
- }
-}
-
-int
-sb_get_irq (void)
-{
- return 0;
-}
-
-void
-sb_free_irq (void)
-{
-}
-
-int
-sb_reset_dsp (void)
-{
- int loopc;
-
- if (AudioDrive)
- outb (3, DSP_RESET); /* Reset FIFO too */
- else
- outb (1, DSP_RESET);
-
- tenmicrosec (sb_osp);
- outb (0, DSP_RESET);
- tenmicrosec (sb_osp);
- tenmicrosec (sb_osp);
- tenmicrosec (sb_osp);
-
- for (loopc = 0; loopc < 1000 && !(inb (DSP_DATA_AVAIL) & 0x80); loopc++);
-
- if (inb (DSP_READ) != 0xAA)
- return 0; /* Sorry */
-
- if (AudioDrive)
- sb_dsp_command (0xc6); /* Enable extended mode */
-
- return 1;
-}
-
-#endif
-
-#ifdef CONFIG_AUDIO
-
-static void
-dsp_speaker (char state)
-{
- if (state)
- sb_dsp_command (DSP_CMD_SPKON);
- else
- sb_dsp_command (DSP_CMD_SPKOFF);
-}
-
-static int
-ess_speed (int speed)
-{
- int divider;
- unsigned char bits = 0;
-
- if (speed < 4000)
- speed = 4000;
- else if (speed > 48000)
- speed = 48000;
-
- if (speed > 22000)
- {
- bits = 0x80;
- divider = 256 - (795500 + speed / 2) / speed;
- dsp_current_speed = 795500 / (256 - divider);
- }
- else
- {
- divider = 128 - (397700 + speed / 2) / speed;
- dsp_current_speed = 397700 / (128 - divider);
- }
-
- bits |= (unsigned char) divider;
- ess_write (0xa1, bits);
-
-/*
- * Set filter divider register
- */
-
- speed = (speed * 9) / 20; /* Set filter rolloff to 90% of speed/2 */
- divider = 256 - 7160000 / (speed * 82);
- ess_write (0xa2, divider);
-
- return dsp_current_speed;
-}
-
-static int
-dsp_speed (int speed)
-{
- unsigned char tconst;
- unsigned long flags;
- int max_speed = 44100;
-
- dsp_requested_speed = speed;
-
- if (AudioDrive)
- return ess_speed (speed);
-
- if (speed < 4000)
- speed = 4000;
-
- /*
- * Older SB models don't support higher speeds than 22050.
- */
-
- if (sbc_major < 2 ||
- (sbc_major == 2 && sbc_minor == 0))
- max_speed = 22050;
-
- /*
- * SB models earlier than SB Pro have low limit for the input speed.
- */
- if (open_mode != OPEN_WRITE) /* Recording is possible */
- if (sbc_major < 3) /* Limited input speed with these cards */
- if (sbc_major == 2 && sbc_minor > 0)
- max_speed = 15000;
- else
- max_speed = 13000;
-
- if (speed > max_speed)
- speed = max_speed; /*
- * Invalid speed
- */
-
- /* Logitech SoundMan Games and Jazz16 cards can support 44.1kHz stereo */
-#if !defined (SM_GAMES)
- /*
- * Max. stereo speed is 22050
- */
- if (dsp_stereo && speed > 22050 && Jazz16_detected == 0 && AudioDrive == 0)
- speed = 22050;
-#endif
-
- if ((speed > 22050) && sb_midi_busy)
- {
- printk ("SB Warning: High speed DSP not possible simultaneously with MIDI output\n");
- speed = 22050;
- }
-
- if (dsp_stereo)
- speed *= 2;
-
- /*
- * Now the speed should be valid
- */
-
- if (speed > 22050)
- { /*
- * High speed mode
- */
- int tmp;
-
- tconst = (unsigned char) ((65536 -
- ((256000000 + speed / 2) / speed)) >> 8);
- sb_dsp_highspeed = 1;
-
- save_flags (flags);
- cli ();
- if (sb_dsp_command (0x40))
- sb_dsp_command (tconst);
- restore_flags (flags);
-
- tmp = 65536 - (tconst << 8);
- speed = (256000000 + tmp / 2) / tmp;
- }
- else
- {
- int tmp;
-
- sb_dsp_highspeed = 0;
- tconst = (256 - ((1000000 + speed / 2) / speed)) & 0xff;
-
- save_flags (flags);
- cli ();
- if (sb_dsp_command (0x40)) /*
- * Set time constant
- */
- sb_dsp_command (tconst);
- restore_flags (flags);
-
- tmp = 256 - tconst;
- speed = (1000000 + tmp / 2) / tmp;
- }
-
- if (dsp_stereo)
- speed /= 2;
-
- dsp_current_speed = speed;
- return speed;
-}
-
-static int
-dsp_set_stereo (int mode)
-{
- dsp_stereo = 0;
-
- if (sbc_major < 3 || sb16)
- return 0; /*
- * Sorry no stereo
- */
-
- if (mode && sb_midi_busy)
- {
- printk ("SB Warning: Stereo DSP not possible simultaneously with MIDI output\n");
- return 0;
- }
-
- dsp_stereo = !!mode;
- dsp_speed (dsp_requested_speed);
- return dsp_stereo;
-}
-
-static unsigned long trg_buf;
-static int trg_bytes;
-static int trg_intrflag;
-static int trg_restart;
-
-static void
-sb_dsp_output_block (int dev, unsigned long buf, int nr_bytes,
- int intrflag, int restart_dma)
-{
- trg_buf = buf;
- trg_bytes = nr_bytes;
- trg_intrflag = intrflag;
- trg_restart = restart_dma;
- sb_irq_mode = IMODE_OUTPUT;
-}
-
-static void
-actually_output_block (int dev, unsigned long buf, int nr_bytes,
- int intrflag, int restart_dma)
-{
- unsigned long flags;
- int count = nr_bytes;
-
- DMAbuf_start_dma (dev, buf, count, DMA_MODE_WRITE);
-
- sb_irq_mode = 0;
-
- if (audio_devs[dev]->dmachan1 > 3)
- count >>= 1;
- count--;
- dsp_count = count;
-
- sb_irq_mode = IMODE_OUTPUT;
-
- if (AudioDrive)
- {
- short c = -nr_bytes;
-
- ess_write (0xa4, (unsigned char) ((unsigned short) c & 0xff));
- ess_write (0xa5, (unsigned char) (((unsigned short) c >> 8) & 0xff));
-
- ess_write (0xb8, ess_read (0xb8) | 0x01); /* Go */
- }
- else if (sb_dsp_highspeed)
- {
- save_flags (flags);
- cli ();
- if (sb_dsp_command (0x48)) /*
- * High speed size
- */
- {
- sb_dsp_command ((unsigned char) (dsp_count & 0xff));
- sb_dsp_command ((unsigned char) ((dsp_count >> 8) & 0xff));
- sb_dsp_command (0x91); /*
- * High speed 8 bit DAC
- */
- }
- else
- printk ("SB Error: Unable to start (high speed) DAC\n");
- restore_flags (flags);
- }
- else
- {
- save_flags (flags);
- cli ();
- if (sb_dsp_command (0x14)) /*
- * 8-bit DAC (DMA)
- */
- {
- sb_dsp_command ((unsigned char) (dsp_count & 0xff));
- sb_dsp_command ((unsigned char) ((dsp_count >> 8) & 0xff));
- }
- else
- printk ("SB Error: Unable to start DAC\n");
- restore_flags (flags);
- }
- sb_intr_active = 1;
-}
-
-static void
-sb_dsp_start_input (int dev, unsigned long buf, int count, int intrflag,
- int restart_dma)
-{
- if (sb_no_recording)
- {
- return;
- }
-
- trg_buf = buf;
- trg_bytes = count;
- trg_intrflag = intrflag;
- trg_restart = restart_dma;
- sb_irq_mode = IMODE_INPUT;
-}
-
-static void
-actually_start_input (int dev, unsigned long buf, int nr_bytes, int intrflag,
- int restart_dma)
-{
- unsigned long flags;
- int count = nr_bytes;
-
- if (sb_no_recording)
- {
- return;
- }
-
- /*
- * Start a DMA input to the buffer pointed by dmaqtail
- */
-
- DMAbuf_start_dma (dev, buf, count, DMA_MODE_READ);
- sb_irq_mode = 0;
-
- if (audio_devs[dev]->dmachan1 > 3)
- count >>= 1;
- count--;
- dsp_count = count;
-
- sb_irq_mode = IMODE_INPUT;
-
- if (AudioDrive)
- {
- short c = -nr_bytes;
-
- ess_write (0xa4, (unsigned char) ((unsigned short) c & 0xff));
- ess_write (0xa5, (unsigned char) (((unsigned short) c >> 8) & 0xff));
-
- ess_write (0xb8, ess_read (0xb8) | 0x01); /* Go */
- }
- else if (sb_dsp_highspeed)
- {
- save_flags (flags);
- cli ();
- if (sb_dsp_command (0x48)) /*
- * High speed size
- */
- {
- sb_dsp_command ((unsigned char) (dsp_count & 0xff));
- sb_dsp_command ((unsigned char) ((dsp_count >> 8) & 0xff));
- sb_dsp_command (0x99); /*
- * High speed 8 bit ADC
- */
- }
- else
- printk ("SB Error: Unable to start (high speed) ADC\n");
- restore_flags (flags);
- }
- else
- {
- save_flags (flags);
- cli ();
- if (sb_dsp_command (0x24)) /*
- * 8-bit ADC (DMA)
- */
- {
- sb_dsp_command ((unsigned char) (dsp_count & 0xff));
- sb_dsp_command ((unsigned char) ((dsp_count >> 8) & 0xff));
- }
- else
- printk ("SB Error: Unable to start ADC\n");
- restore_flags (flags);
- }
-
- sb_intr_active = 1;
-}
-
-static void
-sb_dsp_trigger (int dev, int bits)
-{
-
- if (!bits)
- sb_dsp_command (0xd0); /* Halt DMA */
- else if (bits & sb_irq_mode)
- {
- switch (sb_irq_mode)
- {
- case IMODE_INPUT:
- actually_start_input (my_dev, trg_buf, trg_bytes,
- trg_intrflag, trg_restart);
- break;
-
- case IMODE_OUTPUT:
- actually_output_block (my_dev, trg_buf, trg_bytes,
- trg_intrflag, trg_restart);
- break;
- }
- }
-
- trigger_bits = bits;
-}
-
-static void
-dsp_cleanup (void)
-{
- sb_intr_active = 0;
-}
-
-static int
-sb_dsp_prepare_for_input (int dev, int bsize, int bcount)
-{
- if (sb_no_recording)
- {
- printk ("SB Error: This device doesn't support recording\n");
- return 0;
- }
-
- dsp_cleanup ();
- dsp_speaker (OFF);
- dsp_speed (dsp_requested_speed);
-
- if (sbc_major == 3) /*
- * SB Pro
- */
- {
- if (AudioDrive)
- {
-
- ess_write (0xb8, 0x0e); /* Auto init DMA mode */
- ess_write (0xa8, (ess_read (0xa8) & ~0x04) |
- (2 - dsp_stereo)); /* Mono/stereo */
- ess_write (0xb9, 2); /* Demand mode (2 bytes/xfer) */
-
- if (!dsp_stereo)
- {
- if (dsp_16bit == 0)
- { /* 8 bit mono */
- ess_write (0xb7, 0x51);
- ess_write (0xb7, 0xd0);
- }
- else
- { /* 16 bit mono */
- ess_write (0xb7, 0x71);
- ess_write (0xb7, 0xf4);
- }
- }
- else
- { /* Stereo */
- if (!dsp_16bit)
- { /* 8 bit stereo */
- ess_write (0xb7, 0x51);
- ess_write (0xb7, 0x98);
- }
- else
- { /* 16 bit stereo */
- ess_write (0xb7, 0x71);
- ess_write (0xb7, 0xbc);
- }
- }
-
- ess_write (0xb1, (ess_read (0xb1) & 0x0f) | 0x50);
- ess_write (0xb2, (ess_read (0xb2) & 0x0f) | 0x50);
- }
- else
- { /* !AudioDrive */
-
- /* Select correct dma channel
- * for 16/8 bit access
- */
- audio_devs[my_dev]->dmachan1 =
- audio_devs[my_dev]->dmachan2 =
- dsp_16bit ? dma16 : dma8;
- if (dsp_stereo)
- sb_dsp_command (dsp_16bit ? 0xac : 0xa8);
- else
- sb_dsp_command (dsp_16bit ? 0xa4 : 0xa0);
-
- } /* !AudioDrive */
- }
- trigger_bits = 0;
- return 0;
-}
-
-static int
-sb_dsp_prepare_for_output (int dev, int bsize, int bcount)
-{
- dsp_cleanup ();
- dsp_speaker (OFF);
- dsp_speed (dsp_requested_speed);
-
- if (sbc_major == 3) /* SB Pro (at least ) */
- {
-
- if (AudioDrive)
- {
-
- ess_write (0xb8, 4); /* Auto init DMA mode */
- ess_write (0xa8, ess_read (0xa8) |
- (2 - dsp_stereo)); /* Mono/stereo */
- ess_write (0xb9, 2); /* Demand mode (2 bytes/xfer) */
-
- if (!dsp_stereo)
- {
- if (dsp_16bit == 0)
- { /* 8 bit mono */
- ess_write (0xb6, 0x80);
- ess_write (0xb7, 0x51);
- ess_write (0xb7, 0xd0);
- }
- else
- { /* 16 bit mono */
- ess_write (0xb6, 0x00);
- ess_write (0xb7, 0x71);
- ess_write (0xb7, 0xf4);
- }
- }
- else
- { /* Stereo */
- if (!dsp_16bit)
- { /* 8 bit stereo */
- ess_write (0xb6, 0x80);
- ess_write (0xb7, 0x51);
- ess_write (0xb7, 0x98);
- }
- else
- { /* 16 bit stereo */
- ess_write (0xb6, 0x00);
- ess_write (0xb7, 0x71);
- ess_write (0xb7, 0xbc);
- }
- }
-
- ess_write (0xb1, (ess_read (0xb1) & 0x0f) | 0x50);
- ess_write (0xb2, (ess_read (0xb2) & 0x0f) | 0x50);
- }
- else
- { /* !AudioDrive */
-
- /* 16 bit specific instructions (Jazz16)
- */
- audio_devs[my_dev]->dmachan1 =
- audio_devs[my_dev]->dmachan2 =
- dsp_16bit ? dma16 : dma8;
- if (Jazz16_detected != 2) /* SM Wave */
- sb_mixer_set_stereo (dsp_stereo);
- if (dsp_stereo)
- sb_dsp_command (dsp_16bit ? 0xac : 0xa8);
- else
- sb_dsp_command (dsp_16bit ? 0xa4 : 0xa0);
- } /* !AudioDrive */
-
- }
-
- trigger_bits = 0;
- dsp_speaker (ON);
- return 0;
-}
-
-static void
-sb_dsp_halt_xfer (int dev)
-{
- if (AudioDrive)
- sb_reset_dsp ();
-}
-
-static int
-verify_irq (void)
-{
- irq_ok = 1;
- return irq_ok;
-}
-
-static int
-sb_dsp_open (int dev, int mode)
-{
- int retval;
-
- if (!sb_dsp_ok)
- {
- printk ("SB Error: SoundBlaster board not installed\n");
- return -ENXIO;
- }
-
- if (sb_no_recording && mode & OPEN_READ)
- {
- printk ("SB Warning: Recording not supported by this device\n");
- }
-
- if (sb_intr_active || (sb_midi_busy && sb_midi_mode == UART_MIDI))
- {
- printk ("SB: Audio device or MIDI already in use.\n");
- return -EBUSY;
- }
-
- if (!sb_midi_busy)
- sb_reset_dsp ();
-
- if (!irq_verified)
- {
- verify_irq ();
- irq_verified = 1;
- }
- else if (!irq_ok)
- printk ("SB Warning: Incorrect IRQ setting %d\n",
- sbc_irq);
-
- retval = sb_get_irq ();
- if (retval)
- return retval;
-
- /* Allocate 8 bit dma
- */
- audio_devs[my_dev]->dmachan1 =
- audio_devs[my_dev]->dmachan2 =
- dma8;
-
- /* Allocate 16 bit dma (jazz16)
- */
- if (Jazz16_detected != 0)
- if (dma16 != dma8)
- {
- if (sound_open_dma (dma16, "Jazz16 16 bit"))
- {
- sb_free_irq ();
- /* DMAbuf_close_dma (dev); */
- return -EBUSY;
- }
- }
-
- sb_irq_mode = IMODE_NONE;
-
- sb_dsp_busy = 1;
- open_mode = mode;
-
- return 0;
-}
-
-static void
-sb_dsp_close (int dev)
-{
- /* Release 16 bit dma channel
- */
- if (Jazz16_detected)
- {
- audio_devs[my_dev]->dmachan1 =
- audio_devs[my_dev]->dmachan2 =
- dma8;
-
- if (dma16 != dma8)
- sound_close_dma (dma16);
- }
-
- if (AudioDrive)
- sb_reset_dsp ();
-
- /* DMAbuf_close_dma (dev); */
- sb_free_irq ();
- /* sb_dsp_command (0xd4); */
- dsp_cleanup ();
- dsp_speaker (OFF);
- sb_dsp_busy = 0;
- sb_dsp_highspeed = 0;
- open_mode = 0;
-}
-
-static int
-dsp_set_bits (int arg)
-{
- if (arg)
- if (Jazz16_detected == 0 && AudioDrive == 0)
- dsp_16bit = 0;
- else
- switch (arg)
- {
- case 8:
- dsp_16bit = 0;
- break;
- case 16:
- dsp_16bit = 1;
- break;
- default:
- dsp_16bit = 0;
- }
-
- return dsp_16bit ? 16 : 8;
-}
-
-static int
-sb_dsp_ioctl (int dev, unsigned int cmd, caddr_t arg, int local)
-{
- switch (cmd)
- {
- case SOUND_PCM_WRITE_RATE:
- if (local)
- return dsp_speed ((long) arg);
- return snd_ioctl_return ((int *) arg, dsp_speed (get_fs_long ((long *) arg)));
- break;
-
- case SOUND_PCM_READ_RATE:
- if (local)
- return dsp_current_speed;
- return snd_ioctl_return ((int *) arg, dsp_current_speed);
- break;
-
- case SOUND_PCM_WRITE_CHANNELS:
- if (local)
- return dsp_set_stereo ((long) arg - 1) + 1;
- return snd_ioctl_return ((int *) arg, dsp_set_stereo (get_fs_long ((long *) arg) - 1) + 1);
- break;
-
- case SOUND_PCM_READ_CHANNELS:
- if (local)
- return dsp_stereo + 1;
- return snd_ioctl_return ((int *) arg, dsp_stereo + 1);
- break;
-
- case SNDCTL_DSP_STEREO:
- if (local)
- return dsp_set_stereo ((long) arg);
- return snd_ioctl_return ((int *) arg, dsp_set_stereo (get_fs_long ((long *) arg)));
- break;
-
- /* Word size specific cases here.
- * SNDCTL_DSP_SETFMT=SOUND_PCM_WRITE_BITS
- */
- case SNDCTL_DSP_SETFMT:
- if (local)
- return dsp_set_bits ((long) arg);
- return snd_ioctl_return ((int *) arg, dsp_set_bits (get_fs_long ((long *) arg)));
- break;
-
- case SOUND_PCM_READ_BITS:
- if (local)
- return dsp_16bit ? 16 : 8;
- return snd_ioctl_return ((int *) arg, dsp_16bit ? 16 : 8);
- break;
-
- case SOUND_PCM_WRITE_FILTER:
- case SOUND_PCM_READ_FILTER:
- return -EINVAL;
- break;
-
- default:;
- }
-
- return -EINVAL;
-}
-
-static void
-sb_dsp_reset (int dev)
-{
- unsigned long flags;
-
- save_flags (flags);
- cli ();
-
- sb_reset_dsp ();
- dsp_speed (dsp_current_speed);
- dsp_cleanup ();
-
- restore_flags (flags);
-}
-
-#endif
-
-
-/*
- * Initialization of a Media Vision ProSonic 16 Soundcard.
- * The function initializes a ProSonic 16 like PROS.EXE does for DOS. It sets
- * the base address, the DMA-channels, interrupts and enables the joystickport.
- *
- * Also used by Jazz 16 (same card, different name)
- *
- * written 1994 by Rainer Vranken
- * E-Mail: rvranken@polaris.informatik.uni-essen.de
- */
-
-unsigned int
-get_sb_byte (void)
-{
- int i;
-
- for (i = 1000; i; i--)
- if (inb (DSP_DATA_AVAIL) & 0x80)
- {
- return inb (DSP_READ);
- }
-
- return 0xffff;
-}
-
-/*
- * Logitech Soundman Wave detection and initialization by Hannu Savolainen.
- *
- * There is a microcontroller (8031) in the SM Wave card for MIDI emulation.
- * it's located at address MPU_BASE+4. MPU_BASE+7 is a SM Wave specific
- * control register for MC reset, SCSI, OPL4 and DSP (future expansion)
- * address decoding. Otherwise the SM Wave is just a ordinary MV Jazz16
- * based soundcard.
- */
-
-static void
-smw_putmem (int base, int addr, unsigned char val)
-{
- unsigned long flags;
-
- save_flags (flags);
- cli ();
-
- outb (addr & 0xff, base + 1); /* Low address bits */
- outb (addr >> 8, base + 2); /* High address bits */
- outb (val, base); /* Data */
-
- restore_flags (flags);
-}
-
-static unsigned char
-smw_getmem (int base, int addr)
-{
- unsigned long flags;
- unsigned char val;
-
- save_flags (flags);
- cli ();
-
- outb (addr & 0xff, base + 1); /* Low address bits */
- outb (addr >> 8, base + 2); /* High address bits */
- val = inb (base); /* Data */
-
- restore_flags (flags);
- return val;
-}
-
-#ifdef SMW_MIDI0001_INCLUDED
-#include "smw-midi0001.h"
-#else
-unsigned char *smw_ucode = NULL;
-int smw_ucodeLen = 0;
-
-#endif
-
-static int
-initialize_smw (int mpu_base)
-{
-
- int mp_base = mpu_base + 4; /* Microcontroller base */
- int i;
- unsigned char control;
-
-
- /*
- * Reset the microcontroller so that the RAM can be accessed
- */
-
- control = inb (mpu_base + 7);
- outb (control | 3, mpu_base + 7); /* Set last two bits to 1 (?) */
- outb ((control & 0xfe) | 2, mpu_base + 7); /* xxxxxxx0 resets the mc */
-
- for (i = 0; i < 300; i++) /* Wait at least 1ms */
- tenmicrosec (sb_osp);
-
- outb (control & 0xfc, mpu_base + 7); /* xxxxxx00 enables RAM */
-
- /*
- * Detect microcontroller by probing the 8k RAM area
- */
- smw_putmem (mp_base, 0, 0x00);
- smw_putmem (mp_base, 1, 0xff);
- tenmicrosec (sb_osp);
-
- if (smw_getmem (mp_base, 0) != 0x00 || smw_getmem (mp_base, 1) != 0xff)
- {
- printk ("\nSM Wave: No microcontroller RAM detected (%02x, %02x)\n",
- smw_getmem (mp_base, 0), smw_getmem (mp_base, 1));
- return 0; /* No RAM */
- }
-
- /*
- * There is RAM so assume it's really a SM Wave
- */
-
- if (smw_ucodeLen > 0)
- {
- if (smw_ucodeLen != 8192)
- {
- printk ("\nSM Wave: Invalid microcode (MIDI0001.BIN) length\n");
- return 1;
- }
-
- /*
- * Download microcode
- */
-
- for (i = 0; i < 8192; i++)
- smw_putmem (mp_base, i, smw_ucode[i]);
-
- /*
- * Verify microcode
- */
-
- for (i = 0; i < 8192; i++)
- if (smw_getmem (mp_base, i) != smw_ucode[i])
- {
- printk ("SM Wave: Microcode verification failed\n");
- return 0;
- }
- }
-
- control = 0;
-#ifdef SMW_SCSI_IRQ
- /*
- * Set the SCSI interrupt (IRQ2/9, IRQ3 or IRQ10). The SCSI interrupt
- * is disabled by default.
- *
- * Btw the Zilog 5380 SCSI controller is located at MPU base + 0x10.
- */
- {
- static unsigned char scsi_irq_bits[] =
- {0, 0, 3, 1, 0, 0, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0};
-
- control |= scsi_irq_bits[SMW_SCSI_IRQ] << 6;
- }
-#endif
-
-#ifdef SMW_OPL4_ENABLE
- /*
- * Make the OPL4 chip visible on the PC bus at 0x380.
- *
- * There is no need to enable this feature since this driver
- * doesn't support OPL4 yet. Also there is no RAM in SM Wave so
- * enabling OPL4 is pretty useless.
- */
- control |= 0x10; /* Uses IRQ12 if bit 0x20 == 0 */
- /* control |= 0x20; Uncomment this if you want to use IRQ7 */
-#endif
-
- outb (control | 0x03, mpu_base + 7); /* xxxxxx11 restarts */
- return 1;
-}
-
-static int
-initialize_ProSonic16 (void)
-{
- int x;
- static unsigned char int_translat[16] =
- {0, 0, 2, 3, 0, 1, 0, 4, 0, 2, 5, 0, 0, 0, 0, 6}, dma_translat[8] =
- {0, 1, 0, 2, 0, 3, 0, 4};
-
- outb (0xAF, 0x201); /* ProSonic/Jazz16 wakeup */
- for (x = 0; x < 1000; ++x) /* wait 10 milliseconds */
- tenmicrosec (sb_osp);
- outb (0x50, 0x201);
- outb ((sbc_base & 0x70) | ((mpu_base & 0x30) >> 4), 0x201);
-
- if (sb_reset_dsp ())
- { /* OK. We have at least a SB */
-
- /* Check the version number of ProSonic (I guess) */
-
- if (!sb_dsp_command (0xFA))
- return 1;
- if (get_sb_byte () != 0x12)
- return 1;
-
- if (sb_dsp_command (0xFB) && /* set DMA-channels and Interrupts */
- sb_dsp_command ((dma_translat[dma16] << 4) | dma_translat[dma8]) &&
- sb_dsp_command ((int_translat[mpu_irq] << 4) | int_translat[sbc_irq]))
- {
- Jazz16_detected = 1;
-
- if (mpu_base != 0)
- if (initialize_smw (mpu_base))
- Jazz16_detected = 2;
-
- sb_dsp_disable_midi ();
- }
-
- return 1; /* There was at least a SB */
- }
- return 0; /* No SB or ProSonic16 detected */
-}
-
-int
-sb_dsp_detect (struct address_info *hw_config)
-{
- if (sb_dsp_ok)
- return 0; /*
- * Already initialized
- */
-
- sbc_base = hw_config->io_base;
- sbc_irq = hw_config->irq;
- sbc_dma = hw_config->dma;
- sb_osp = hw_config->osp;
- dma8 = dma16 = hw_config->dma;
-
- if (sb_reset_dsp ())
- dsp_get_vers (hw_config);
- else
- sbc_major = 0;
-
- if (sbc_major == 3 || sbc_major == 0)
- if (initialize_ProSonic16 ())
- return 1;
-
- if (!sb_reset_dsp ())
- return 0;
-
- return 1; /*
- * Detected
- */
-}
-
-#ifdef CONFIG_AUDIO
-static struct audio_operations sb_dsp_operations =
-{
- "SoundBlaster",
- NOTHING_SPECIAL,
- AFMT_U8, /* Just 8 bits. Poor old SB */
- NULL,
- sb_dsp_open,
- sb_dsp_close,
- sb_dsp_output_block,
- sb_dsp_start_input,
- sb_dsp_ioctl,
- sb_dsp_prepare_for_input,
- sb_dsp_prepare_for_output,
- sb_dsp_reset,
- sb_dsp_halt_xfer,
- NULL, /* local_qlen */
- NULL, /* copy_from_user */
- NULL,
- NULL,
- sb_dsp_trigger
-};
-
-#endif
-
-static void
-ess_init (int ess_minor) /* ESS1688 Initialization */
-{
- unsigned char cfg, irq_bits = 0, dma_bits = 0;
-
- AudioDrive = 1;
-
- if (ess_minor >= 8) /* ESS1688 doesn't support SB MIDI */
- midi_disabled = 1;
-
- sb_reset_dsp (); /* Turn on extended mode */
-
-/*
- * Set IRQ configuration register
- */
-
- cfg = 0x50; /* Enable only DMA counter interrupt */
-
- switch (sbc_irq)
- {
- case 2:
- case 9:
- irq_bits = 0;
- break;
-
- case 5:
- irq_bits = 1;
- break;
-
- case 7:
- irq_bits = 2;
- break;
-
- case 10:
- irq_bits = 3;
- break;
-
- default:
- irq_bits = 0;
- cfg = 0x10; /* Disable all interrupts */
- printk ("\nESS1688: Invalid IRQ %d\n", sbc_irq);
- }
-
- if (!ess_write (0xb1, cfg | (irq_bits << 2)))
- printk ("\nESS1688: Failed to write to IRQ config register\n");
-
-/*
- * Set DMA configuration register
- */
-
- cfg = 0x50; /* Extended mode DMA enable */
-
- if (sbc_dma > 3 || sbc_dma < 0 || sbc_dma == 2)
- {
- dma_bits = 0;
- cfg = 0x00; /* Disable all DMA */
- printk ("\nESS1688: Invalid DMA %d\n", sbc_dma);
- }
- else
- {
- if (sbc_dma == 3)
- dma_bits = 3;
- else
- dma_bits = sbc_dma + 1;
- }
-
- if (!ess_write (0xb2, cfg | (dma_bits << 2)))
- printk ("\nESS1688: Failed to write to DMA config register\n");
-
-/*
- * Enable joystick and OPL3
- */
-
- cfg = sb_getmixer (0x40);
- sb_setmixer (0x40, cfg | 0x03);
-}
-
-#ifdef CONFIG_MIDI
-void
-ess_midi_init (struct address_info *hw_config) /* called from sb16_midi.c */
-{
- unsigned char cfg, tmp;
-
- cfg = sb_getmixer (0x40) & 0x03;
-
- tmp = (hw_config->io_base & 0x0f0) >> 4;
-
- if (tmp > 3)
- {
- sb_setmixer (0x40, cfg);
- return;
- }
-
- cfg |= tmp << 3;
-
- tmp = 1; /* MPU enabled without interrupts */
-
- switch (hw_config->irq)
- {
- case 9:
- tmp = 0x4;
- break;
- case 5:
- tmp = 0x5;
- break;
- case 7:
- tmp = 0x6;
- break;
- case 10:
- tmp = 0x7;
- break;
- }
-
- cfg |= tmp << 5;
-
- if (tmp != 1)
- {
- ess_mpu_irq = hw_config->irq;
-
- if (snd_set_irq_handler (ess_mpu_irq, sbmidiintr, "ES1688 MIDI", sb_osp) < 0)
- printk ("ES1688: Can't allocate IRQ%d\n", ess_mpu_irq);
- }
-
- sb_setmixer (0x40, cfg);
-}
-#endif
-
-void
-Jazz16_midi_init (struct address_info *hw_config)
-{
- extern void smw_mixer_init (void);
- extern void sb_mixer_reset (void);
-
- mpu_base = hw_config->io_base;
- mpu_irq = hw_config->irq;
-
- initialize_ProSonic16 ();
-
- smw_mixer_init ();
- sb_mixer_reset ();
-}
-
-void
-Jazz16_set_dma16 (int dma)
-{
- dma16 = dma;
-
-/* Allocate 16 bit dma (Jazz16)
- */
- if (dma16 != dma8)
- {
- if (sound_alloc_dma (dma16, "Jazz16 16 bit"))
- {
- printk ("Jazz16: Can't allocate 16 bit DMA channel\n");
- Jazz16_detected = 0;
- return;
- }
- }
- initialize_ProSonic16 ();
-}
-
-static void
-dsp_get_vers (struct address_info *hw_config)
-{
- int i;
-
- unsigned long flags;
-
- save_flags (flags);
- cli ();
- sb_osp = hw_config->osp;
- sbc_major = sbc_minor = 0;
- sb_dsp_command (0xe1); /* Get version */
-
- for (i = 100000; i; i--)
- {
- if (inb (DSP_DATA_AVAIL) & 0x80)
- {
- if (sbc_major == 0)
- sbc_major = inb (DSP_READ);
- else
- {
- sbc_minor = inb (DSP_READ);
- break;
- }
- }
- }
- restore_flags (flags);
-}
-
-long
-sb_dsp_init (long mem_start, struct address_info *hw_config)
-{
- int i;
- int ess_major = 0, ess_minor = 0;
-
- int mixer_type = 0;
-
- if (sbc_major == 0)
- dsp_get_vers (hw_config);
-
- if (sbc_major == 0)
- {
- sb_reset_dsp ();
- dsp_get_vers (hw_config);
- }
-
- if (sbc_major == 0)
- {
- printk ("\n\nFailed to get SB version (%x) - possible I/O conflict?\n\n",
- inb (DSP_DATA_AVAIL));
- sbc_major = 1;
- }
-
- if (sbc_major == 2 || sbc_major == 3)
- sb_duplex_midi = 1;
-
- if (sbc_major == 4)
- sb16 = 1;
-
- if (sbc_major == 3 && sbc_minor == 1)
- {
-
-/*
- * Try to detect ESS chips.
- */
-
- sb_dsp_command (0xe7); /*
- * Return identification bytes.
- */
-
- for (i = 1000; i; i--)
- {
- if (inb (DSP_DATA_AVAIL) & 0x80)
- { /*
- * wait for Data Ready
- */
- if (ess_major == 0)
- ess_major = inb (DSP_READ);
- else
- {
- ess_minor = inb (DSP_READ);
- break;
- }
- }
- }
- }
-
- if (snd_set_irq_handler (sbc_irq, sbintr, "SoundBlaster", sb_osp) < 0)
- printk ("sb_dsp: Can't allocate IRQ\n");;
-
-#ifdef CONFIG_AUDIO
- if (sbc_major >= 3)
- {
- if (Jazz16_detected)
- {
- if (Jazz16_detected == 2)
- sprintf (sb_dsp_operations.name, "SoundMan Wave %d.%d", sbc_major, sbc_minor);
- else
- sprintf (sb_dsp_operations.name, "MV Jazz16 %d.%d", sbc_major, sbc_minor);
- sb_dsp_operations.format_mask |= AFMT_S16_LE; /* Hurrah, 16 bits */
- }
- else
-#ifdef __SGNXPRO__
- if (mixer_type == 2)
- {
- sprintf (sb_dsp_operations.name, "Sound Galaxy NX Pro %d.%d", sbc_major, sbc_minor);
- }
- else
-#endif
-
- if (sbc_major == 4)
- {
- sprintf (sb_dsp_operations.name, "SoundBlaster 16 %d.%d", sbc_major, sbc_minor);
- }
- else if (ess_major != 0)
- {
- if (ess_major == 0x48 && (ess_minor & 0xf0) == 0x80)
- sprintf (sb_dsp_operations.name, "ESS ES488 AudioDrive (rev %d)",
- ess_minor & 0x0f);
- else if (ess_major == 0x68 && (ess_minor & 0xf0) == 0x80)
- {
- sprintf (sb_dsp_operations.name,
- "ESS ES1688 AudioDrive (rev %d)",
- ess_minor & 0x0f);
- sb_dsp_operations.format_mask |= AFMT_S16_LE;
- ess_init (ess_minor);
- }
- }
- else
- {
- sprintf (sb_dsp_operations.name, "SoundBlaster Pro %d.%d", sbc_major, sbc_minor);
- }
- }
- else
- {
- sprintf (sb_dsp_operations.name, "SoundBlaster %d.%d", sbc_major, sbc_minor);
- }
-
- conf_printf (sb_dsp_operations.name, hw_config);
-
- if (sbc_major >= 3)
- mixer_type = sb_mixer_init (sbc_major);
-
- if (!sb16)
- if (num_audiodevs < MAX_AUDIO_DEV)
- {
- audio_devs[my_dev = num_audiodevs++] = &sb_dsp_operations;
-
- if (AudioDrive)
- audio_devs[my_dev]->flags |= DMA_AUTOMODE;
-
- audio_devs[my_dev]->buffsize = DSP_BUFFSIZE;
- dma8 = audio_devs[my_dev]->dmachan1 = hw_config->dma;
- dma16 = audio_devs[my_dev]->dmachan2 = hw_config->dma;
- if (sound_alloc_dma (hw_config->dma, "SoundBlaster"))
- printk ("sb_dsp.c: Can't allocate DMA channel\n");
- }
- else
- printk ("SB: Too many DSP devices available\n");
-#else
- conf_printf ("SoundBlaster (configured without audio support)", hw_config);
-#endif
-
-#ifdef CONFIG_MIDI
- if (!midi_disabled && !sb16) /*
- * Midi don't work in the SB emulation mode *
- * of PAS, SB16 has better midi interface
- */
- sb_midi_init (sbc_major);
-#endif
-
- sb_dsp_ok = 1;
- sb_reset_dsp ();
-
- if (sb16 || hw_config->dma2 >= 0)
- {
- if (sb16_dsp_detect (hw_config))
- {
- sb16_inited = 1;
- return sb16_dsp_init (mem_start, hw_config);
- }
- }
- return mem_start;
-}
-
-void
-sb_dsp_unload (struct address_info *hw_config)
-{
- sound_free_dma (dma8);
-
- /* Free 16 bit dma (Jazz16)
- */
- if (Jazz16_detected != 0)
- if (dma16 != dma8)
- {
- sound_free_dma (dma16);
- }
- snd_release_irq (sbc_irq);
-
- if (AudioDrive && ess_mpu_irq)
- {
- snd_release_irq (ess_mpu_irq);
- }
-
- if (sb16_inited)
- unload_sb16 (hw_config);
-}
-
-void
-sb_dsp_disable_midi (void)
-{
- midi_disabled = 1;
-}
-
-
-#endif
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