diff options
Diffstat (limited to 'sound/oss/gus_wave.c')
| -rw-r--r-- | sound/oss/gus_wave.c | 3464 |
1 files changed, 0 insertions, 3464 deletions
diff --git a/sound/oss/gus_wave.c b/sound/oss/gus_wave.c deleted file mode 100644 index 597db7a..0000000 --- a/sound/oss/gus_wave.c +++ /dev/null @@ -1,3464 +0,0 @@ -/* - * sound/oss/gus_wave.c - * - * Driver for the Gravis UltraSound wave table synth. - * - * - * Copyright (C) by Hannu Savolainen 1993-1997 - * - * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) - * Version 2 (June 1991). See the "COPYING" file distributed with this software - * for more info. - * - * - * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed) - * Frank van de Pol : Fixed GUS MAX interrupt handling. Enabled simultanious - * usage of CS4231A codec, GUS wave and MIDI for GUS MAX. - * Bartlomiej Zolnierkiewicz : added some __init/__exit - */ - -#include <linux/init.h> -#include <linux/config.h> -#include <linux/spinlock.h> - -#define GUSPNP_AUTODETECT - -#include "sound_config.h" -#include <linux/ultrasound.h> - -#include "gus.h" -#include "gus_hw.h" - -#define GUS_BANK_SIZE (((iw_mode) ? 256*1024*1024 : 256*1024)) - -#define MAX_SAMPLE 150 -#define MAX_PATCH 256 - -#define NOT_SAMPLE 0xffff - -struct voice_info -{ - unsigned long orig_freq; - unsigned long current_freq; - unsigned long mode; - int fixed_pitch; - int bender; - int bender_range; - int panning; - int midi_volume; - unsigned int initial_volume; - unsigned int current_volume; - int loop_irq_mode, loop_irq_parm; -#define LMODE_FINISH 1 -#define LMODE_PCM 2 -#define LMODE_PCM_STOP 3 - int volume_irq_mode, volume_irq_parm; -#define VMODE_HALT 1 -#define VMODE_ENVELOPE 2 -#define VMODE_START_NOTE 3 - - int env_phase; - unsigned char env_rate[6]; - unsigned char env_offset[6]; - - /* - * Volume computation parameters for gus_adagio_vol() - */ - int main_vol, expression_vol, patch_vol; - - /* Variables for "Ultraclick" removal */ - int dev_pending, note_pending, volume_pending, - sample_pending; - char kill_pending; - long offset_pending; - -}; - -static struct voice_alloc_info *voice_alloc; -static struct address_info *gus_hw_config; -extern int gus_base; -extern int gus_irq, gus_dma; -extern int gus_pnp_flag; -extern int gus_no_wave_dma; -static int gus_dma2 = -1; -static int dual_dma_mode; -static long gus_mem_size; -static long free_mem_ptr; -static int gus_busy; -static int gus_no_dma; -static int nr_voices; -static int gus_devnum; -static int volume_base, volume_scale, volume_method; -static int gus_recmask = SOUND_MASK_MIC; -static int recording_active; -static int only_read_access; -static int only_8_bits; - -static int iw_mode = 0; -int gus_wave_volume = 60; -int gus_pcm_volume = 80; -int have_gus_max = 0; -static int gus_line_vol = 100, gus_mic_vol; -static unsigned char mix_image = 0x00; - -int gus_timer_enabled = 0; - -/* - * Current version of this driver doesn't allow synth and PCM functions - * at the same time. The active_device specifies the active driver - */ - -static int active_device; - -#define GUS_DEV_WAVE 1 /* Wave table synth */ -#define GUS_DEV_PCM_DONE 2 /* PCM device, transfer done */ -#define GUS_DEV_PCM_CONTINUE 3 /* PCM device, transfer done ch. 1/2 */ - -static int gus_audio_speed; -static int gus_audio_channels; -static int gus_audio_bits; -static int gus_audio_bsize; -static char bounce_buf[8 * 1024]; /* Must match value set to max_fragment */ - -static DECLARE_WAIT_QUEUE_HEAD(dram_sleeper); - -/* - * Variables and buffers for PCM output - */ - -#define MAX_PCM_BUFFERS (128*MAX_REALTIME_FACTOR) /* Don't change */ - -static int pcm_bsize, pcm_nblk, pcm_banksize; -static int pcm_datasize[MAX_PCM_BUFFERS]; -static volatile int pcm_head, pcm_tail, pcm_qlen; -static volatile int pcm_active; -static volatile int dma_active; -static int pcm_opened; -static int pcm_current_dev; -static int pcm_current_block; -static unsigned long pcm_current_buf; -static int pcm_current_count; -static int pcm_current_intrflag; -DEFINE_SPINLOCK(gus_lock); - -extern int *gus_osp; - -static struct voice_info voices[32]; - -static int freq_div_table[] = -{ - 44100, /* 14 */ - 41160, /* 15 */ - 38587, /* 16 */ - 36317, /* 17 */ - 34300, /* 18 */ - 32494, /* 19 */ - 30870, /* 20 */ - 29400, /* 21 */ - 28063, /* 22 */ - 26843, /* 23 */ - 25725, /* 24 */ - 24696, /* 25 */ - 23746, /* 26 */ - 22866, /* 27 */ - 22050, /* 28 */ - 21289, /* 29 */ - 20580, /* 30 */ - 19916, /* 31 */ - 19293 /* 32 */ -}; - -static struct patch_info *samples; -static long sample_ptrs[MAX_SAMPLE + 1]; -static int sample_map[32]; -static int free_sample; -static int mixer_type; - - -static int patch_table[MAX_PATCH]; -static int patch_map[32]; - -static struct synth_info gus_info = { - "Gravis UltraSound", 0, SYNTH_TYPE_SAMPLE, SAMPLE_TYPE_GUS, - 0, 16, 0, MAX_PATCH -}; - -static void gus_poke(long addr, unsigned char data); -static void compute_and_set_volume(int voice, int volume, int ramp_time); -extern unsigned short gus_adagio_vol(int vel, int mainv, int xpn, int voicev); -extern unsigned short gus_linear_vol(int vol, int mainvol); -static void compute_volume(int voice, int volume); -static void do_volume_irq(int voice); -static void set_input_volumes(void); -static void gus_tmr_install(int io_base); - -#define INSTANT_RAMP -1 /* Instant change. No ramping */ -#define FAST_RAMP 0 /* Fastest possible ramp */ - -static void reset_sample_memory(void) -{ - int i; - - for (i = 0; i <= MAX_SAMPLE; i++) - sample_ptrs[i] = -1; - for (i = 0; i < 32; i++) - sample_map[i] = -1; - for (i = 0; i < 32; i++) - patch_map[i] = -1; - - gus_poke(0, 0); /* Put a silent sample to the beginning */ - gus_poke(1, 0); - free_mem_ptr = 2; - - free_sample = 0; - - for (i = 0; i < MAX_PATCH; i++) - patch_table[i] = NOT_SAMPLE; -} - -void gus_delay(void) -{ - int i; - - for (i = 0; i < 7; i++) - inb(u_DRAMIO); -} - -static void gus_poke(long addr, unsigned char data) -{ /* Writes a byte to the DRAM */ - outb((0x43), u_Command); - outb((addr & 0xff), u_DataLo); - outb(((addr >> 8) & 0xff), u_DataHi); - - outb((0x44), u_Command); - outb(((addr >> 16) & 0xff), u_DataHi); - outb((data), u_DRAMIO); -} - -static unsigned char gus_peek(long addr) -{ /* Reads a byte from the DRAM */ - unsigned char tmp; - - outb((0x43), u_Command); - outb((addr & 0xff), u_DataLo); - outb(((addr >> 8) & 0xff), u_DataHi); - - outb((0x44), u_Command); - outb(((addr >> 16) & 0xff), u_DataHi); - tmp = inb(u_DRAMIO); - - return tmp; -} - -void gus_write8(int reg, unsigned int data) -{ /* Writes to an indirect register (8 bit) */ - outb((reg), u_Command); - outb(((unsigned char) (data & 0xff)), u_DataHi); -} - -static unsigned char gus_read8(int reg) -{ - /* Reads from an indirect register (8 bit). Offset 0x80. */ - unsigned char val; - - outb((reg | 0x80), u_Command); - val = inb(u_DataHi); - - return val; -} - -static unsigned char gus_look8(int reg) -{ - /* Reads from an indirect register (8 bit). No additional offset. */ - unsigned char val; - - outb((reg), u_Command); - val = inb(u_DataHi); - - return val; -} - -static void gus_write16(int reg, unsigned int data) -{ - /* Writes to an indirect register (16 bit) */ - outb((reg), u_Command); - - outb(((unsigned char) (data & 0xff)), u_DataLo); - outb(((unsigned char) ((data >> 8) & 0xff)), u_DataHi); -} - -static unsigned short gus_read16(int reg) -{ - /* Reads from an indirect register (16 bit). Offset 0x80. */ - unsigned char hi, lo; - - outb((reg | 0x80), u_Command); - - lo = inb(u_DataLo); - hi = inb(u_DataHi); - - return ((hi << 8) & 0xff00) | lo; -} - -static unsigned short gus_look16(int reg) -{ - /* Reads from an indirect register (16 bit). No additional offset. */ - unsigned char hi, lo; - - outb((reg), u_Command); - - lo = inb(u_DataLo); - hi = inb(u_DataHi); - - return ((hi << 8) & 0xff00) | lo; -} - -static void gus_write_addr(int reg, unsigned long address, int frac, int is16bit) -{ - /* Writes an 24 bit memory address */ - unsigned long hold_address; - - if (is16bit) - { - if (iw_mode) - { - /* Interwave spesific address translations */ - address >>= 1; - } - else - { - /* - * Special processing required for 16 bit patches - */ - - hold_address = address; - address = address >> 1; - address &= 0x0001ffffL; - address |= (hold_address & 0x000c0000L); - } - } - gus_write16(reg, (unsigned short) ((address >> 7) & 0xffff)); - gus_write16(reg + 1, (unsigned short) ((address << 9) & 0xffff) - + (frac << 5)); - /* Could writing twice fix problems with GUS_VOICE_POS()? Let's try. */ - gus_delay(); - gus_write16(reg, (unsigned short) ((address >> 7) & 0xffff)); - gus_write16(reg + 1, (unsigned short) ((address << 9) & 0xffff) - + (frac << 5)); -} - -static void gus_select_voice(int voice) -{ - if (voice < 0 || voice > 31) - return; - outb((voice), u_Voice); -} - -static void gus_select_max_voices(int nvoices) -{ - if (iw_mode) - nvoices = 32; - if (nvoices < 14) - nvoices = 14; - if (nvoices > 32) - nvoices = 32; - - voice_alloc->max_voice = nr_voices = nvoices; - gus_write8(0x0e, (nvoices - 1) | 0xc0); -} - -static void gus_voice_on(unsigned int mode) -{ - gus_write8(0x00, (unsigned char) (mode & 0xfc)); - gus_delay(); - gus_write8(0x00, (unsigned char) (mode & 0xfc)); -} - -static void gus_voice_off(void) -{ - gus_write8(0x00, gus_read8(0x00) | 0x03); -} - -static void gus_voice_mode(unsigned int m) -{ - unsigned char mode = (unsigned char) (m & 0xff); - - gus_write8(0x00, (gus_read8(0x00) & 0x03) | - (mode & 0xfc)); /* Don't touch last two bits */ - gus_delay(); - gus_write8(0x00, (gus_read8(0x00) & 0x03) | (mode & 0xfc)); -} - -static void gus_voice_freq(unsigned long freq) -{ - unsigned long divisor = freq_div_table[nr_voices - 14]; - unsigned short fc; - - /* Interwave plays at 44100 Hz with any number of voices */ - if (iw_mode) - fc = (unsigned short) (((freq << 9) + (44100 >> 1)) / 44100); - else - fc = (unsigned short) (((freq << 9) + (divisor >> 1)) / divisor); - fc = fc << 1; - - gus_write16(0x01, fc); -} - -static void gus_voice_volume(unsigned int vol) -{ - gus_write8(0x0d, 0x03); /* Stop ramp before setting volume */ - gus_write16(0x09, (unsigned short) (vol << 4)); -} - -static void gus_voice_balance(unsigned int balance) -{ - gus_write8(0x0c, (unsigned char) (balance & 0xff)); -} - -static void gus_ramp_range(unsigned int low, unsigned int high) -{ - gus_write8(0x07, (unsigned char) ((low >> 4) & 0xff)); - gus_write8(0x08, (unsigned char) ((high >> 4) & 0xff)); -} - -static void gus_ramp_rate(unsigned int scale, unsigned int rate) -{ - gus_write8(0x06, (unsigned char) (((scale & 0x03) << 6) | (rate & 0x3f))); -} - -static void gus_rampon(unsigned int m) -{ - unsigned char mode = (unsigned char) (m & 0xff); - - gus_write8(0x0d, mode & 0xfc); - gus_delay(); - gus_write8(0x0d, mode & 0xfc); -} - -static void gus_ramp_mode(unsigned int m) -{ - unsigned char mode = (unsigned char) (m & 0xff); - - gus_write8(0x0d, (gus_read8(0x0d) & 0x03) | - (mode & 0xfc)); /* Leave the last 2 bits alone */ - gus_delay(); - gus_write8(0x0d, (gus_read8(0x0d) & 0x03) | (mode & 0xfc)); -} - -static void gus_rampoff(void) -{ - gus_write8(0x0d, 0x03); -} - -static void gus_set_voice_pos(int voice, long position) -{ - int sample_no; - - if ((sample_no = sample_map[voice]) != -1) { - if (position < samples[sample_no].len) { - if (voices[voice].volume_irq_mode == VMODE_START_NOTE) - voices[voice].offset_pending = position; - else - gus_write_addr(0x0a, sample_ptrs[sample_no] + position, 0, - samples[sample_no].mode & WAVE_16_BITS); - } - } -} - -static void gus_voice_init(int voice) -{ - unsigned long flags; - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_volume(0); - gus_voice_off(); - gus_write_addr(0x0a, 0, 0, 0); /* Set current position to 0 */ - gus_write8(0x00, 0x03); /* Voice off */ - gus_write8(0x0d, 0x03); /* Ramping off */ - voice_alloc->map[voice] = 0; - voice_alloc->alloc_times[voice] = 0; - spin_unlock_irqrestore(&gus_lock,flags); - -} - -static void gus_voice_init2(int voice) -{ - voices[voice].panning = 0; - voices[voice].mode = 0; - voices[voice].orig_freq = 20000; - voices[voice].current_freq = 20000; - voices[voice].bender = 0; - voices[voice].bender_range = 200; - voices[voice].initial_volume = 0; - voices[voice].current_volume = 0; - voices[voice].loop_irq_mode = 0; - voices[voice].loop_irq_parm = 0; - voices[voice].volume_irq_mode = 0; - voices[voice].volume_irq_parm = 0; - voices[voice].env_phase = 0; - voices[voice].main_vol = 127; - voices[voice].patch_vol = 127; - voices[voice].expression_vol = 127; - voices[voice].sample_pending = -1; - voices[voice].fixed_pitch = 0; -} - -static void step_envelope(int voice) -{ - unsigned vol, prev_vol, phase; - unsigned char rate; - unsigned long flags; - - if (voices[voice].mode & WAVE_SUSTAIN_ON && voices[voice].env_phase == 2) - { - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_rampoff(); - spin_unlock_irqrestore(&gus_lock,flags); - return; - /* - * Sustain phase begins. Continue envelope after receiving note off. - */ - } - if (voices[voice].env_phase >= 5) - { - /* Envelope finished. Shoot the voice down */ - gus_voice_init(voice); - return; - } - prev_vol = voices[voice].current_volume; - phase = ++voices[voice].env_phase; - compute_volume(voice, voices[voice].midi_volume); - vol = voices[voice].initial_volume * voices[voice].env_offset[phase] / 255; - rate = voices[voice].env_rate[phase]; - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - - gus_voice_volume(prev_vol); - - - gus_write8(0x06, rate); /* Ramping rate */ - - voices[voice].volume_irq_mode = VMODE_ENVELOPE; - - if (((vol - prev_vol) / 64) == 0) /* No significant volume change */ - { - spin_unlock_irqrestore(&gus_lock,flags); - step_envelope(voice); /* Continue the envelope on the next step */ - return; - } - if (vol > prev_vol) - { - if (vol >= (4096 - 64)) - vol = 4096 - 65; - gus_ramp_range(0, vol); - gus_rampon(0x20); /* Increasing volume, with IRQ */ - } - else - { - if (vol <= 64) - vol = 65; - gus_ramp_range(vol, 4030); - gus_rampon(0x60); /* Decreasing volume, with IRQ */ - } - voices[voice].current_volume = vol; - spin_unlock_irqrestore(&gus_lock,flags); -} - -static void init_envelope(int voice) -{ - voices[voice].env_phase = -1; - voices[voice].current_volume = 64; - - step_envelope(voice); -} - -static void start_release(int voice) -{ - if (gus_read8(0x00) & 0x03) - return; /* Voice already stopped */ - - voices[voice].env_phase = 2; /* Will be incremented by step_envelope */ - - voices[voice].current_volume = voices[voice].initial_volume = - gus_read16(0x09) >> 4; /* Get current volume */ - - voices[voice].mode &= ~WAVE_SUSTAIN_ON; - gus_rampoff(); - step_envelope(voice); -} - -static void gus_voice_fade(int voice) -{ - int instr_no = sample_map[voice], is16bits; - unsigned long flags; - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - - if (instr_no < 0 || instr_no > MAX_SAMPLE) - { - gus_write8(0x00, 0x03); /* Hard stop */ - voice_alloc->map[voice] = 0; - spin_unlock_irqrestore(&gus_lock,flags); - return; - } - is16bits = (samples[instr_no].mode & WAVE_16_BITS) ? 1 : 0; /* 8 or 16 bits */ - - if (voices[voice].mode & WAVE_ENVELOPES) - { - start_release(voice); - spin_unlock_irqrestore(&gus_lock,flags); - return; - } - /* - * Ramp the volume down but not too quickly. - */ - if ((int) (gus_read16(0x09) >> 4) < 100) /* Get current volume */ - { - gus_voice_off(); - gus_rampoff(); - gus_voice_init(voice); - spin_unlock_irqrestore(&gus_lock,flags); - return; - } - gus_ramp_range(65, 4030); - gus_ramp_rate(2, 4); - gus_rampon(0x40 | 0x20); /* Down, once, with IRQ */ - voices[voice].volume_irq_mode = VMODE_HALT; - spin_unlock_irqrestore(&gus_lock,flags); -} - -static void gus_reset(void) -{ - int i; - - gus_select_max_voices(24); - volume_base = 3071; - volume_scale = 4; - volume_method = VOL_METHOD_ADAGIO; - - for (i = 0; i < 32; i++) - { - gus_voice_init(i); /* Turn voice off */ - gus_voice_init2(i); - } -} - -static void gus_initialize(void) -{ - unsigned long flags; - unsigned char dma_image, irq_image, tmp; - - static unsigned char gus_irq_map[16] = { - 0, 0, 0, 3, 0, 2, 0, 4, 0, 1, 0, 5, 6, 0, 0, 7 - }; - - static unsigned char gus_dma_map[8] = { - 0, 1, 0, 2, 0, 3, 4, 5 - }; - - spin_lock_irqsave(&gus_lock,flags); - gus_write8(0x4c, 0); /* Reset GF1 */ - gus_delay(); - gus_delay(); - - gus_write8(0x4c, 1); /* Release Reset */ - gus_delay(); - gus_delay(); - - /* - * Clear all interrupts - */ - - gus_write8(0x41, 0); /* DMA control */ - gus_write8(0x45, 0); /* Timer control */ - gus_write8(0x49, 0); /* Sample control */ - - gus_select_max_voices(24); - - inb(u_Status); /* Touch the status register */ - - gus_look8(0x41); /* Clear any pending DMA IRQs */ - gus_look8(0x49); /* Clear any pending sample IRQs */ - gus_read8(0x0f); /* Clear pending IRQs */ - - gus_reset(); /* Resets all voices */ - - gus_look8(0x41); /* Clear any pending DMA IRQs */ - gus_look8(0x49); /* Clear any pending sample IRQs */ - gus_read8(0x0f); /* Clear pending IRQs */ - - gus_write8(0x4c, 7); /* Master reset | DAC enable | IRQ enable */ - - /* - * Set up for Digital ASIC - */ - - outb((0x05), gus_base + 0x0f); - - mix_image |= 0x02; /* Disable line out (for a moment) */ - outb((mix_image), u_Mixer); - - outb((0x00), u_IRQDMAControl); - - outb((0x00), gus_base + 0x0f); - - /* - * Now set up the DMA and IRQ interface - * - * The GUS supports two IRQs and two DMAs. - * - * Just one DMA channel is used. This prevents simultaneous ADC and DAC. - * Adding this support requires significant changes to the dmabuf.c, dsp.c - * and audio.c also. - */ - - irq_image = 0; - tmp = gus_irq_map[gus_irq]; - if (!gus_pnp_flag && !tmp) - printk(KERN_WARNING "Warning! GUS IRQ not selected\n"); - irq_image |= tmp; - irq_image |= 0x40; /* Combine IRQ1 (GF1) and IRQ2 (Midi) */ - - dual_dma_mode = 1; - if (gus_dma2 == gus_dma || gus_dma2 == -1) - { - dual_dma_mode = 0; - dma_image = 0x40; /* Combine DMA1 (DRAM) and IRQ2 (ADC) */ - - tmp = gus_dma_map[gus_dma]; - if (!tmp) - printk(KERN_WARNING "Warning! GUS DMA not selected\n"); - - dma_image |= tmp; - } - else - { - /* Setup dual DMA channel mode for GUS MAX */ - - dma_image = gus_dma_map[gus_dma]; - if (!dma_image) - printk(KERN_WARNING "Warning! GUS DMA not selected\n"); - - tmp = gus_dma_map[gus_dma2] << 3; - if (!tmp) - { - printk(KERN_WARNING "Warning! Invalid GUS MAX DMA\n"); - tmp = 0x40; /* Combine DMA channels */ - dual_dma_mode = 0; - } - dma_image |= tmp; - } - - /* - * For some reason the IRQ and DMA addresses must be written twice - */ - - /* - * Doing it first time - */ - - outb((mix_image), u_Mixer); /* Select DMA control */ - outb((dma_image | 0x80), u_IRQDMAControl); /* Set DMA address */ - - outb((mix_image | 0x40), u_Mixer); /* Select IRQ control */ - outb((irq_image), u_IRQDMAControl); /* Set IRQ address */ - - /* - * Doing it second time - */ - - outb((mix_image), u_Mixer); /* Select DMA control */ - outb((dma_image), u_IRQDMAControl); /* Set DMA address */ - - outb((mix_image | 0x40), u_Mixer); /* Select IRQ control */ - outb((irq_image), u_IRQDMAControl); /* Set IRQ address */ - - gus_select_voice(0); /* This disables writes to IRQ/DMA reg */ - - mix_image &= ~0x02; /* Enable line out */ - mix_image |= 0x08; /* Enable IRQ */ - outb((mix_image), u_Mixer); /* - * Turn mixer channels on - * Note! Mic in is left off. - */ - - gus_select_voice(0); /* This disables writes to IRQ/DMA reg */ - - gusintr(gus_irq, (void *)gus_hw_config, NULL); /* Serve pending interrupts */ - - inb(u_Status); /* Touch the status register */ - - gus_look8(0x41); /* Clear any pending DMA IRQs */ - gus_look8(0x49); /* Clear any pending sample IRQs */ - - gus_read8(0x0f); /* Clear pending IRQs */ - - if (iw_mode) - gus_write8(0x19, gus_read8(0x19) | 0x01); - spin_unlock_irqrestore(&gus_lock,flags); -} - - -static void __init pnp_mem_init(void) -{ -#include "iwmem.h" -#define CHUNK_SIZE (256*1024) -#define BANK_SIZE (4*1024*1024) -#define CHUNKS_PER_BANK (BANK_SIZE/CHUNK_SIZE) - - int bank, chunk, addr, total = 0; - int bank_sizes[4]; - int i, j, bits = -1, testbits = -1, nbanks = 0; - - /* - * This routine determines what kind of RAM is installed in each of the four - * SIMM banks and configures the DRAM address decode logic accordingly. - */ - - /* - * Place the chip into enhanced mode - */ - gus_write8(0x19, gus_read8(0x19) | 0x01); - gus_write8(0x53, gus_look8(0x53) & ~0x02); /* Select DRAM I/O access */ - - /* - * Set memory configuration to 4 DRAM banks of 4M in each (16M total). - */ - - gus_write16(0x52, (gus_look16(0x52) & 0xfff0) | 0x000c); - - /* - * Perform the DRAM size detection for each bank individually. - */ - for (bank = 0; bank < 4; bank++) - { - int size = 0; - - addr = bank * BANK_SIZE; - - /* Clean check points of each chunk */ - for (chunk = 0; chunk < CHUNKS_PER_BANK; chunk++) - { - gus_poke(addr + chunk * CHUNK_SIZE + 0L, 0x00); - gus_poke(addr + chunk * CHUNK_SIZE + 1L, 0x00); - } - - /* Write a value to each chunk point and verify the result */ - for (chunk = 0; chunk < CHUNKS_PER_BANK; chunk++) - { - gus_poke(addr + chunk * CHUNK_SIZE + 0L, 0x55); - gus_poke(addr + chunk * CHUNK_SIZE + 1L, 0xAA); - - if (gus_peek(addr + chunk * CHUNK_SIZE + 0L) == 0x55 && - gus_peek(addr + chunk * CHUNK_SIZE + 1L) == 0xAA) - { - /* OK. There is RAM. Now check for possible shadows */ - int ok = 1, chunk2; - - for (chunk2 = 0; ok && chunk2 < chunk; chunk2++) - if (gus_peek(addr + chunk2 * CHUNK_SIZE + 0L) || - gus_peek(addr + chunk2 * CHUNK_SIZE + 1L)) - ok = 0; /* Addressing wraps */ - - if (ok) - size = (chunk + 1) * CHUNK_SIZE; - } - gus_poke(addr + chunk * CHUNK_SIZE + 0L, 0x00); - gus_poke(addr + chunk * CHUNK_SIZE + 1L, 0x00); - } - bank_sizes[bank] = size; - if (size) - nbanks = bank + 1; - DDB(printk("Interwave: Bank %d, size=%dk\n", bank, size / 1024)); - } - - if (nbanks == 0) /* No RAM - Give up */ - { - printk(KERN_ERR "Sound: An Interwave audio chip detected but no DRAM\n"); - printk(KERN_ERR "Sound: Unable to work with this card.\n"); - gus_write8(0x19, gus_read8(0x19) & ~0x01); - gus_mem_size = 0; - return; - } - - /* - * Now we know how much DRAM there is in each bank. The next step is - * to find a DRAM size encoding (0 to 12) which is best for the combination - * we have. - * - * First try if any of the possible alternatives matches exactly the amount - * of memory we have. - */ - - for (i = 0; bits == -1 && i < 13; i++) - { - bits = i; - - for (j = 0; bits != -1 && j < 4; j++) - if (mem_decode[i][j] != bank_sizes[j]) - bits = -1; /* No hit */ - } - - /* - * If necessary, try to find a combination where other than the last - * bank matches our configuration and the last bank is left oversized. - * In this way we don't leave holes in the middle of memory. - */ - - if (bits == -1) /* No luck yet */ - { - for (i = 0; bits == -1 && i < 13; i++) - { - bits = i; - - for (j = 0; bits != -1 && j < nbanks - 1; j++) - if (mem_decode[i][j] != bank_sizes[j]) - bits = -1; /* No hit */ - if (mem_decode[i][nbanks - 1] < bank_sizes[nbanks - 1]) - bits = -1; /* The last bank is too small */ - } - } - /* - * The last resort is to search for a combination where the banks are - * smaller than the actual SIMMs. This leaves some memory in the banks - * unused but doesn't leave holes in the DRAM address space. - */ - if (bits == -1) /* No luck yet */ - { - for (i = 0; i < 13; i++) - { - testbits = i; - for (j = 0; testbits != -1 && j < nbanks - 1; j++) - if (mem_decode[i][j] > bank_sizes[j]) { - testbits = -1; - } - if(testbits > bits) bits = testbits; - } - if (bits != -1) - { - printk(KERN_INFO "Interwave: Can't use all installed RAM.\n"); - printk(KERN_INFO "Interwave: Try reordering SIMMS.\n"); - } - printk(KERN_INFO "Interwave: Can't find working DRAM encoding.\n"); - printk(KERN_INFO "Interwave: Defaulting to 256k. Try reordering SIMMS.\n"); - bits = 0; - } - DDB(printk("Interwave: Selecting DRAM addressing mode %d\n", bits)); - - for (bank = 0; bank < 4; bank++) - { - DDB(printk(" Bank %d, mem=%dk (limit %dk)\n", bank, bank_sizes[bank] / 1024, mem_decode[bits][bank] / 1024)); - - if (bank_sizes[bank] > mem_decode[bits][bank]) - total += mem_decode[bits][bank]; - else - total += bank_sizes[bank]; - } - - DDB(printk("Total %dk of DRAM (enhanced mode)\n", total / 1024)); - - /* - * Set the memory addressing mode. - */ - gus_write16(0x52, (gus_look16(0x52) & 0xfff0) | bits); - -/* Leave the chip into enhanced mode. Disable LFO */ - gus_mem_size = total; - iw_mode = 1; - gus_write8(0x19, (gus_read8(0x19) | 0x01) & ~0x02); -} - -int __init gus_wave_detect(int baseaddr) -{ - unsigned long i, max_mem = 1024L; - unsigned long loc; - unsigned char val; - - if (!request_region(baseaddr, 16, "GUS")) - return 0; - if (!request_region(baseaddr + 0x100, 12, "GUS")) { /* 0x10c-> is MAX */ - release_region(baseaddr, 16); - return 0; - } - - gus_base = baseaddr; - - gus_write8(0x4c, 0); /* Reset GF1 */ - gus_delay(); - gus_delay(); - - gus_write8(0x4c, 1); /* Release Reset */ - gus_delay(); - gus_delay(); - -#ifdef GUSPNP_AUTODETECT - val = gus_look8(0x5b); /* Version number register */ - gus_write8(0x5b, ~val); /* Invert all bits */ - - if ((gus_look8(0x5b) & 0xf0) == (val & 0xf0)) /* No change */ - { - if ((gus_look8(0x5b) & 0x0f) == ((~val) & 0x0f)) /* Change */ - { - DDB(printk("Interwave chip version %d detected\n", (val & 0xf0) >> 4)); - gus_pnp_flag = 1; - } - else - { - DDB(printk("Not an Interwave chip (%x)\n", gus_look8(0x5b))); - gus_pnp_flag = 0; - } - } - gus_write8(0x5b, val); /* Restore all bits */ -#endif - - if (gus_pnp_flag) - pnp_mem_init(); - if (iw_mode) - return 1; - - /* See if there is first block there.... */ - gus_poke(0L, 0xaa); - if (gus_peek(0L) != 0xaa) { - release_region(baseaddr + 0x100, 12); - release_region(baseaddr, 16); - return 0; - } - - /* Now zero it out so that I can check for mirroring .. */ - gus_poke(0L, 0x00); - for (i = 1L; i < max_mem; i++) - { - int n, failed; - - /* check for mirroring ... */ - if (gus_peek(0L) != 0) - break; - loc = i << 10; - - for (n = loc - 1, failed = 0; n <= loc; n++) - { - gus_poke(loc, 0xaa); - if (gus_peek(loc) != 0xaa) - failed = 1; - gus_poke(loc, 0x55); - if (gus_peek(loc) != 0x55) - failed = 1; - } - if (failed) - break; - } - gus_mem_size = i << 10; - return 1; -} - -static int guswave_ioctl(int dev, unsigned int cmd, void __user *arg) -{ - - switch (cmd) - { - case SNDCTL_SYNTH_INFO: - gus_info.nr_voices = nr_voices; - if (copy_to_user(arg, &gus_info, sizeof(gus_info))) - return -EFAULT; - return 0; - - case SNDCTL_SEQ_RESETSAMPLES: - reset_sample_memory(); - return 0; - - case SNDCTL_SEQ_PERCMODE: - return 0; - - case SNDCTL_SYNTH_MEMAVL: - return (gus_mem_size == 0) ? 0 : gus_mem_size - free_mem_ptr - 32; - - default: - return -EINVAL; - } -} - -static int guswave_set_instr(int dev, int voice, int instr_no) -{ - int sample_no; - - if (instr_no < 0 || instr_no > MAX_PATCH) - instr_no = 0; /* Default to acoustic piano */ - - if (voice < 0 || voice > 31) - return -EINVAL; - - if (voices[voice].volume_irq_mode == VMODE_START_NOTE) - { - voices[voice].sample_pending = instr_no; - return 0; - } - sample_no = patch_table[instr_no]; - patch_map[voice] = -1; - - if (sample_no == NOT_SAMPLE) - { -/* printk("GUS: Undefined patch %d for voice %d\n", instr_no, voice);*/ - return -EINVAL; /* Patch not defined */ - } - if (sample_ptrs[sample_no] == -1) /* Sample not loaded */ - { -/* printk("GUS: Sample #%d not loaded for patch %d (voice %d)\n", sample_no, instr_no, voice);*/ - return -EINVAL; - } - sample_map[voice] = sample_no; - patch_map[voice] = instr_no; - return 0; -} - -static int guswave_kill_note(int dev, int voice, int note, int velocity) -{ - unsigned long flags; - - spin_lock_irqsave(&gus_lock,flags); - /* voice_alloc->map[voice] = 0xffff; */ - if (voices[voice].volume_irq_mode == VMODE_START_NOTE) - { - voices[voice].kill_pending = 1; - spin_unlock_irqrestore(&gus_lock,flags); - } - else - { - spin_unlock_irqrestore(&gus_lock,flags); - gus_voice_fade(voice); - } - - return 0; -} - -static void guswave_aftertouch(int dev, int voice, int pressure) -{ -} - -static void guswave_panning(int dev, int voice, int value) -{ - if (voice >= 0 || voice < 32) - voices[voice].panning = value; -} - -static void guswave_volume_method(int dev, int mode) -{ - if (mode == VOL_METHOD_LINEAR || mode == VOL_METHOD_ADAGIO) - volume_method = mode; -} - -static void compute_volume(int voice, int volume) -{ - if (volume < 128) - voices[voice].midi_volume = volume; - - switch (volume_method) - { - case VOL_METHOD_ADAGIO: - voices[voice].initial_volume = - gus_adagio_vol(voices[voice].midi_volume, voices[voice].main_vol, - voices[voice].expression_vol, - voices[voice].patch_vol); - break; - - case VOL_METHOD_LINEAR: /* Totally ignores patch-volume and expression */ - voices[voice].initial_volume = gus_linear_vol(volume, voices[voice].main_vol); - break; - - default: - voices[voice].initial_volume = volume_base + - (voices[voice].midi_volume * volume_scale); - } - - if (voices[voice].initial_volume > 4030) - voices[voice].initial_volume = 4030; -} - -static void compute_and_set_volume(int voice, int volume, int ramp_time) -{ - int curr, target, rate; - unsigned long flags; - - compute_volume(voice, volume); - voices[voice].current_volume = voices[voice].initial_volume; - - spin_lock_irqsave(&gus_lock,flags); - /* - * CAUTION! Interrupts disabled. Enable them before returning - */ - - gus_select_voice(voice); - - curr = gus_read16(0x09) >> 4; - target = voices[voice].initial_volume; - - if (ramp_time == INSTANT_RAMP) - { - gus_rampoff(); - gus_voice_volume(target); - spin_unlock_irqrestore(&gus_lock,flags); - return; - } - if (ramp_time == FAST_RAMP) - rate = 63; - else - rate = 16; - gus_ramp_rate(0, rate); - - if ((target - curr) / 64 == 0) /* Close enough to target. */ - { - gus_rampoff(); - gus_voice_volume(target); - spin_unlock_irqrestore(&gus_lock,flags); - return; - } - if (target > curr) - { - if (target > (4095 - 65)) - target = 4095 - 65; - gus_ramp_range(curr, target); - gus_rampon(0x00); /* Ramp up, once, no IRQ */ - } - else - { - if (target < 65) - target = 65; - - gus_ramp_range(target, curr); - gus_rampon(0x40); /* Ramp down, once, no irq */ - } - spin_unlock_irqrestore(&gus_lock,flags); -} - -static void dynamic_volume_change(int voice) -{ - unsigned char status; - unsigned long flags; - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - status = gus_read8(0x00); /* Get voice status */ - spin_unlock_irqrestore(&gus_lock,flags); - - if (status & 0x03) - return; /* Voice was not running */ - - if (!(voices[voice].mode & WAVE_ENVELOPES)) - { - compute_and_set_volume(voice, voices[voice].midi_volume, 1); - return; - } - - /* - * Voice is running and has envelopes. - */ - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - status = gus_read8(0x0d); /* Ramping status */ - spin_unlock_irqrestore(&gus_lock,flags); - - if (status & 0x03) /* Sustain phase? */ - { - compute_and_set_volume(voice, voices[voice].midi_volume, 1); - return; - } - if (voices[voice].env_phase < 0) - return; - - compute_volume(voice, voices[voice].midi_volume); - -} - -static void guswave_controller(int dev, int voice, int ctrl_num, int value) -{ - unsigned long flags; - unsigned long freq; - - if (voice < 0 || voice > 31) - return; - - switch (ctrl_num) - { - case CTRL_PITCH_BENDER: - voices[voice].bender = value; - - if (voices[voice].volume_irq_mode != VMODE_START_NOTE) - { - freq = compute_finetune(voices[voice].orig_freq, value, voices[voice].bender_range, 0); - voices[voice].current_freq = freq; - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_freq(freq); - spin_unlock_irqrestore(&gus_lock,flags); - } - break; - - case CTRL_PITCH_BENDER_RANGE: - voices[voice].bender_range = value; - break; - case CTL_EXPRESSION: - value /= 128; - case CTRL_EXPRESSION: - if (volume_method == VOL_METHOD_ADAGIO) - { - voices[voice].expression_vol = value; - if (voices[voice].volume_irq_mode != VMODE_START_NOTE) - dynamic_volume_change(voice); - } - break; - - case CTL_PAN: - voices[voice].panning = (value * 2) - 128; - break; - - case CTL_MAIN_VOLUME: - value = (value * 100) / 16383; - - case CTRL_MAIN_VOLUME: - voices[voice].main_vol = value; - if (voices[voice].volume_irq_mode != VMODE_START_NOTE) - dynamic_volume_change(voice); - break; - - default: - break; - } -} - -static int guswave_start_note2(int dev, int voice, int note_num, int volume) -{ - int sample, best_sample, best_delta, delta_freq; - int is16bits, samplep, patch, pan; - unsigned long note_freq, base_note, freq, flags; - unsigned char mode = 0; - - if (voice < 0 || voice > 31) - { -/* printk("GUS: Invalid voice\n");*/ - return -EINVAL; - } - if (note_num == 255) - { - if (voices[voice].mode & WAVE_ENVELOPES) - { - voices[voice].midi_volume = volume; - dynamic_volume_change(voice); - return 0; - } - compute_and_set_volume(voice, volume, 1); - return 0; - } - if ((patch = patch_map[voice]) == -1) - return -EINVAL; - if ((samplep = patch_table[patch]) == NOT_SAMPLE) - { - return -EINVAL; - } - note_freq = note_to_freq(note_num); - - /* - * Find a sample within a patch so that the note_freq is between low_note - * and high_note. - */ - sample = -1; - - best_sample = samplep; - best_delta = 1000000; - while (samplep != 0 && samplep != NOT_SAMPLE && sample == -1) - { - delta_freq = note_freq - samples[samplep].base_note; - if (delta_freq < 0) - delta_freq = -delta_freq; - if (delta_freq < best_delta) - { - best_sample = samplep; - best_delta = delta_freq; - } - if (samples[samplep].low_note <= note_freq && - note_freq <= samples[samplep].high_note) - { - sample = samplep; - } - else - samplep = samples[samplep].key; /* Link to next sample */ - } - if (sample == -1) - sample = best_sample; - - if (sample == -1) - { -/* printk("GUS: Patch %d not defined for note %d\n", patch, note_num);*/ - return 0; /* Should play default patch ??? */ - } - is16bits = (samples[sample].mode & WAVE_16_BITS) ? 1 : 0; - voices[voice].mode = samples[sample].mode; - voices[voice].patch_vol = samples[sample].volume; - - if (iw_mode) - gus_write8(0x15, 0x00); /* RAM, Reset voice deactivate bit of SMSI */ - - if (voices[voice].mode & WAVE_ENVELOPES) - { - int i; - - for (i = 0; i < 6; i++) - { - voices[voice].env_rate[i] = samples[sample].env_rate[i]; - voices[voice].env_offset[i] = samples[sample].env_offset[i]; - } - } - sample_map[voice] = sample; - - if (voices[voice].fixed_pitch) /* Fixed pitch */ - { - freq = samples[sample].base_freq; - } - else - { - base_note = samples[sample].base_note / 100; - note_freq /= 100; - - freq = samples[sample].base_freq * note_freq / base_note; - } - - voices[voice].orig_freq = freq; - - /* - * Since the pitch bender may have been set before playing the note, we - * have to calculate the bending now. - */ - - freq = compute_finetune(voices[voice].orig_freq, voices[voice].bender, - voices[voice].bender_range, 0); - voices[voice].current_freq = freq; - - pan = (samples[sample].panning + voices[voice].panning) / 32; - pan += 7; - if (pan < 0) - pan = 0; - if (pan > 15) - pan = 15; - - if (samples[sample].mode & WAVE_16_BITS) - { - mode |= 0x04; /* 16 bits */ - if ((sample_ptrs[sample] / GUS_BANK_SIZE) != - ((sample_ptrs[sample] + samples[sample].len) / GUS_BANK_SIZE)) - printk(KERN_ERR "GUS: Sample address error\n"); - } - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_off(); - gus_rampoff(); - - spin_unlock_irqrestore(&gus_lock,flags); - - if (voices[voice].mode & WAVE_ENVELOPES) - { - compute_volume(voice, volume); - init_envelope(voice); - } - else - { - compute_and_set_volume(voice, volume, 0); - } - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - - if (samples[sample].mode & WAVE_LOOP_BACK) - gus_write_addr(0x0a, sample_ptrs[sample] + samples[sample].len - - voices[voice].offset_pending, 0, is16bits); /* start=end */ - else - gus_write_addr(0x0a, sample_ptrs[sample] + voices[voice].offset_pending, 0, is16bits); /* Sample start=begin */ - - if (samples[sample].mode & WAVE_LOOPING) - { - mode |= 0x08; - - if (samples[sample].mode & WAVE_BIDIR_LOOP) - mode |= 0x10; - - if (samples[sample].mode & WAVE_LOOP_BACK) - { - gus_write_addr(0x0a, sample_ptrs[sample] + samples[sample].loop_end - - voices[voice].offset_pending, - (samples[sample].fractions >> 4) & 0x0f, is16bits); - mode |= 0x40; - } - gus_write_addr(0x02, sample_ptrs[sample] + samples[sample].loop_start, - samples[sample].fractions & 0x0f, is16bits); /* Loop start location */ - gus_write_addr(0x04, sample_ptrs[sample] + samples[sample].loop_end, - (samples[sample].fractions >> 4) & 0x0f, is16bits); /* Loop end location */ - } - else - { - mode |= 0x20; /* Loop IRQ at the end */ - voices[voice].loop_irq_mode = LMODE_FINISH; /* Ramp down at the end */ - voices[voice].loop_irq_parm = 1; - gus_write_addr(0x02, sample_ptrs[sample], 0, is16bits); /* Loop start location */ - gus_write_addr(0x04, sample_ptrs[sample] + samples[sample].len - 1, - (samples[sample].fractions >> 4) & 0x0f, is16bits); /* Loop end location */ - } - gus_voice_freq(freq); - gus_voice_balance(pan); - gus_voice_on(mode); - spin_unlock_irqrestore(&gus_lock,flags); - - return 0; -} - -/* - * New guswave_start_note by Andrew J. Robinson attempts to minimize clicking - * when the note playing on the voice is changed. It uses volume - * ramping. - */ - -static int guswave_start_note(int dev, int voice, int note_num, int volume) -{ - unsigned long flags; - int mode; - int ret_val = 0; - - spin_lock_irqsave(&gus_lock,flags); - if (note_num == 255) - { - if (voices[voice].volume_irq_mode == VMODE_START_NOTE) - { - voices[voice].volume_pending = volume; - } - else - { - ret_val = guswave_start_note2(dev, voice, note_num, volume); - } - } - else - { - gus_select_voice(voice); - mode = gus_read8(0x00); - if (mode & 0x20) - gus_write8(0x00, mode & 0xdf); /* No interrupt! */ - - voices[voice].offset_pending = 0; - voices[voice].kill_pending = 0; - voices[voice].volume_irq_mode = 0; - voices[voice].loop_irq_mode = 0; - - if (voices[voice].sample_pending >= 0) - { - spin_unlock_irqrestore(&gus_lock,flags); /* Run temporarily with interrupts enabled */ - guswave_set_instr(voices[voice].dev_pending, voice, voices[voice].sample_pending); - voices[voice].sample_pending = -1; - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); /* Reselect the voice (just to be sure) */ - } - if ((mode & 0x01) || (int) ((gus_read16(0x09) >> 4) < (unsigned) 2065)) - { - ret_val = guswave_start_note2(dev, voice, note_num, volume); - } - else - { - voices[voice].dev_pending = dev; - voices[voice].note_pending = note_num; - voices[voice].volume_pending = volume; - voices[voice].volume_irq_mode = VMODE_START_NOTE; - - gus_rampoff(); - gus_ramp_range(2000, 4065); - gus_ramp_rate(0, 63); /* Fastest possible rate */ - gus_rampon(0x20 | 0x40); /* Ramp down, once, irq */ - } - } - spin_unlock_irqrestore(&gus_lock,flags); - return ret_val; -} - -static void guswave_reset(int dev) -{ - int i; - - for (i = 0; i < 32; i++) - { - gus_voice_init(i); - gus_voice_init2(i); - } -} - -static int guswave_open(int dev, int mode) -{ - int err; - - if (gus_busy) - return -EBUSY; - - voice_alloc->timestamp = 0; - - if (gus_no_wave_dma) { - gus_no_dma = 1; - } else { - if ((err = DMAbuf_open_dma(gus_devnum)) < 0) - { - /* printk( "GUS: Loading samples without DMA\n"); */ - gus_no_dma = 1; /* Upload samples using PIO */ - } - else - gus_no_dma = 0; - } - - init_waitqueue_head(&dram_sleeper); - gus_busy = 1; - active_device = GUS_DEV_WAVE; - - gusintr(gus_irq, (void *)gus_hw_config, NULL); /* Serve pending interrupts */ - gus_initialize(); - gus_reset(); - gusintr(gus_irq, (void *)gus_hw_config, NULL); /* Serve pending interrupts */ - - return 0; -} - -static void guswave_close(int dev) -{ - gus_busy = 0; - active_device = 0; - gus_reset(); - - if (!gus_no_dma) - DMAbuf_close_dma(gus_devnum); -} - -static int guswave_load_patch(int dev, int format, const char __user *addr, - int offs, int count, int pmgr_flag) -{ - struct patch_info patch; - int instr; - long sizeof_patch; - - unsigned long blk_sz, blk_end, left, src_offs, target; - - sizeof_patch = (long) &patch.data[0] - (long) &patch; /* Header size */ - - if (format != GUS_PATCH) - { -/* printk("GUS Error: Invalid patch format (key) 0x%x\n", format);*/ - return -EINVAL; - } - if (count < sizeof_patch) - { -/* printk("GUS Error: Patch header too short\n");*/ - return -EINVAL; - } - count -= sizeof_patch; - - if (free_sample >= MAX_SAMPLE) - { -/* printk("GUS: Sample table full\n");*/ - return -ENOSPC; - } - /* - * Copy the header from user space but ignore the first bytes which have - * been transferred already. - */ - - if (copy_from_user(&((char *) &patch)[offs], &(addr)[offs], - sizeof_patch - offs)) - return -EFAULT; - - if (patch.mode & WAVE_ROM) - return -EINVAL; - if (gus_mem_size == 0) - return -ENOSPC; - - instr = patch.instr_no; - - if (instr < 0 || instr > MAX_PATCH) - { -/* printk(KERN_ERR "GUS: Invalid patch number %d\n", instr);*/ - return -EINVAL; - } - if (count < patch.len) - { -/* printk(KERN_ERR "GUS Warning: Patch record too short (%d<%d)\n", count, (int) patch.len);*/ - patch.len = count; - } - if (patch.len <= 0 || patch.len > gus_mem_size) - { -/* printk(KERN_ERR "GUS: Invalid sample length %d\n", (int) patch.len);*/ - return -EINVAL; - } - if (patch.mode & WAVE_LOOPING) - { - if (patch.loop_start < 0 || patch.loop_start >= patch.len) - { -/* printk(KERN_ERR "GUS: Invalid loop start\n");*/ - return -EINVAL; - } - if (patch.loop_end < patch.loop_start || patch.loop_end > patch.len) - { -/* printk(KERN_ERR "GUS: Invalid loop end\n");*/ - return -EINVAL; - } - } - free_mem_ptr = (free_mem_ptr + 31) & ~31; /* 32 byte alignment */ - - if (patch.mode & WAVE_16_BITS) - { - /* - * 16 bit samples must fit one 256k bank. - */ - if (patch.len >= GUS_BANK_SIZE) - { -/* printk("GUS: Sample (16 bit) too long %d\n", (int) patch.len);*/ - return -ENOSPC; - } - if ((free_mem_ptr / GUS_BANK_SIZE) != - ((free_mem_ptr + patch.len) / GUS_BANK_SIZE)) - { - unsigned long tmp_mem = - /* Align to 256K */ - ((free_mem_ptr / GUS_BANK_SIZE) + 1) * GUS_BANK_SIZE; - - if ((tmp_mem + patch.len) > gus_mem_size) - return -ENOSPC; - - free_mem_ptr = tmp_mem; /* This leaves unusable memory */ - } - } - if ((free_mem_ptr + patch.len) > gus_mem_size) - return -ENOSPC; - - sample_ptrs[free_sample] = free_mem_ptr; - - /* - * Tremolo is not possible with envelopes - */ - - if (patch.mode & WAVE_ENVELOPES) - patch.mode &= ~WAVE_TREMOLO; - - if (!(patch.mode & WAVE_FRACTIONS)) - { - patch.fractions = 0; - } - memcpy((char *) &samples[free_sample], &patch, sizeof_patch); - - /* - * Link this_one sample to the list of samples for patch 'instr'. - */ - - samples[free_sample].key = patch_table[instr]; - patch_table[instr] = free_sample; - - /* - * Use DMA to transfer the wave data to the DRAM - */ - - left = patch.len; - src_offs = 0; - target = free_mem_ptr; - - while (left) /* Not completely transferred yet */ - { - blk_sz = audio_devs[gus_devnum]->dmap_out->bytes_in_use; - if (blk_sz > left) - blk_sz = left; - - /* - * DMA cannot cross bank (256k) boundaries. Check for that. - */ - - blk_end = target + blk_sz; - - if ((target / GUS_BANK_SIZE) != (blk_end / GUS_BANK_SIZE)) - { - /* Split the block */ - blk_end &= ~(GUS_BANK_SIZE - 1); - blk_sz = blk_end - target; - } - if (gus_no_dma) - { - /* - * For some reason the DMA is not possible. We have to use PIO. - */ - long i; - unsigned char data; - - for (i = 0; i < blk_sz; i++) - { - get_user(*(unsigned char *) &data, (unsigned char __user *) &((addr)[sizeof_patch + i])); - if (patch.mode & WAVE_UNSIGNED) - if (!(patch.mode & WAVE_16_BITS) || (i & 0x01)) - data ^= 0x80; /* Convert to signed */ - gus_poke(target + i, data); - } - } - else - { - unsigned long address, hold_address; - unsigned char dma_command; - unsigned long flags; - - if (audio_devs[gus_devnum]->dmap_out->raw_buf == NULL) - { - printk(KERN_ERR "GUS: DMA buffer == NULL\n"); - return -ENOSPC; - } - /* - * OK, move now. First in and then out. - */ - - if (copy_from_user(audio_devs[gus_devnum]->dmap_out->raw_buf, - &(addr)[sizeof_patch + src_offs], - blk_sz)) - return -EFAULT; - - spin_lock_irqsave(&gus_lock,flags); - gus_write8(0x41, 0); /* Disable GF1 DMA */ - DMAbuf_start_dma(gus_devnum, audio_devs[gus_devnum]->dmap_out->raw_buf_phys, - blk_sz, DMA_MODE_WRITE); - - /* - * Set the DRAM address for the wave data - */ - - if (iw_mode) - { - /* Different address translation in enhanced mode */ - - unsigned char hi; - - if (gus_dma > 4) - address = target >> 1; /* Convert to 16 bit word address */ - else - address = target; - - hi = (unsigned char) ((address >> 16) & 0xf0); - hi += (unsigned char) (address & 0x0f); - - gus_write16(0x42, (address >> 4) & 0xffff); /* DMA address (low) */ - gus_write8(0x50, hi); - } - else - { - address = target; - if (audio_devs[gus_devnum]->dmap_out->dma > 3) - { - hold_address = address; - address = address >> 1; - address &= 0x0001ffffL; - address |= (hold_address & 0x000c0000L); - } - gus_write16(0x42, (address >> 4) & 0xffff); /* DRAM DMA address */ - } - - /* - * Start the DMA transfer - */ - - dma_command = 0x21; /* IRQ enable, DMA start */ - if (patch.mode & WAVE_UNSIGNED) - dma_command |= 0x80; /* Invert MSB */ - if (patch.mode & WAVE_16_BITS) - dma_command |= 0x40; /* 16 bit _DATA_ */ - if (audio_devs[gus_devnum]->dmap_out->dma > 3) - dma_command |= 0x04; /* 16 bit DMA _channel_ */ - - /* - * Sleep here until the DRAM DMA done interrupt is served - */ - active_device = GUS_DEV_WAVE; - gus_write8(0x41, dma_command); /* Lets go luteet (=bugs) */ - - spin_unlock_irqrestore(&gus_lock,flags); /* opens a race */ - if (!interruptible_sleep_on_timeout(&dram_sleeper, HZ)) - printk("GUS: DMA Transfer timed out\n"); - } - - /* - * Now the next part - */ - - left -= blk_sz; - src_offs += blk_sz; - target += blk_sz; - - gus_write8(0x41, 0); /* Stop DMA */ - } - - free_mem_ptr += patch.len; - free_sample++; - return 0; -} - -static void guswave_hw_control(int dev, unsigned char *event_rec) -{ - int voice, cmd; - unsigned short p1, p2; - unsigned int plong; - unsigned long flags; - - cmd = event_rec[2]; - voice = event_rec[3]; - p1 = *(unsigned short *) &event_rec[4]; - p2 = *(unsigned short *) &event_rec[6]; - plong = *(unsigned int *) &event_rec[4]; - - if ((voices[voice].volume_irq_mode == VMODE_START_NOTE) && - (cmd != _GUS_VOICESAMPLE) && (cmd != _GUS_VOICE_POS)) - do_volume_irq(voice); - - switch (cmd) - { - case _GUS_NUMVOICES: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_select_max_voices(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICESAMPLE: - guswave_set_instr(dev, voice, p1); - break; - - case _GUS_VOICEON: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - p1 &= ~0x20; /* Don't allow interrupts */ - gus_voice_on(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICEOFF: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_off(); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICEFADE: - gus_voice_fade(voice); - break; - - case _GUS_VOICEMODE: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - p1 &= ~0x20; /* Don't allow interrupts */ - gus_voice_mode(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICEBALA: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_balance(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICEFREQ: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_freq(plong); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICEVOL: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_volume(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOICEVOL2: /* Just update the software voice level */ - voices[voice].initial_volume = voices[voice].current_volume = p1; - break; - - case _GUS_RAMPRANGE: - if (voices[voice].mode & WAVE_ENVELOPES) - break; /* NO-NO */ - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_ramp_range(p1, p2); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_RAMPRATE: - if (voices[voice].mode & WAVE_ENVELOPES) - break; /* NJET-NJET */ - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_ramp_rate(p1, p2); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_RAMPMODE: - if (voices[voice].mode & WAVE_ENVELOPES) - break; /* NO-NO */ - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - p1 &= ~0x20; /* Don't allow interrupts */ - gus_ramp_mode(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_RAMPON: - if (voices[voice].mode & WAVE_ENVELOPES) - break; /* EI-EI */ - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - p1 &= ~0x20; /* Don't allow interrupts */ - gus_rampon(p1); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_RAMPOFF: - if (voices[voice].mode & WAVE_ENVELOPES) - break; /* NEJ-NEJ */ - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_rampoff(); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - case _GUS_VOLUME_SCALE: - volume_base = p1; - volume_scale = p2; - break; - - case _GUS_VOICE_POS: - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_set_voice_pos(voice, plong); - spin_unlock_irqrestore(&gus_lock,flags); - break; - - default: - break; - } -} - -static int gus_audio_set_speed(int speed) -{ - if (speed <= 0) - speed = gus_audio_speed; - - if (speed < 4000) - speed = 4000; - - if (speed > 44100) - speed = 44100; - - gus_audio_speed = speed; - - if (only_read_access) - { - /* Compute nearest valid recording speed and return it */ - - /* speed = (9878400 / (gus_audio_speed + 2)) / 16; */ - speed = (((9878400 + gus_audio_speed / 2) / (gus_audio_speed + 2)) + 8) / 16; - speed = (9878400 / (speed * 16)) - 2; - } - return speed; -} - -static int gus_audio_set_channels(int channels) -{ - if (!channels) - return gus_audio_channels; - if (channels > 2) - channels = 2; - if (channels < 1) - channels = 1; - gus_audio_channels = channels; - return channels; -} - -static int gus_audio_set_bits(int bits) -{ - if (!bits) - return gus_audio_bits; - - if (bits != 8 && bits != 16) - bits = 8; - - if (only_8_bits) - bits = 8; - - gus_audio_bits = bits; - return bits; -} - -static int gus_audio_ioctl(int dev, unsigned int cmd, void __user *arg) -{ - int val; - - switch (cmd) - { - case SOUND_PCM_WRITE_RATE: - if (get_user(val, (int __user*)arg)) - return -EFAULT; - val = gus_audio_set_speed(val); - break; - - case SOUND_PCM_READ_RATE: - val = gus_audio_speed; - break; - - case SNDCTL_DSP_STEREO: - if (get_user(val, (int __user *)arg)) - return -EFAULT; - val = gus_audio_set_channels(val + 1) - 1; - break; - - case SOUND_PCM_WRITE_CHANNELS: - if (get_user(val, (int __user *)arg)) - return -EFAULT; - val = gus_audio_set_channels(val); - break; - - case SOUND_PCM_READ_CHANNELS: - val = gus_audio_channels; - break; - - case SNDCTL_DSP_SETFMT: - if (get_user(val, (int __user *)arg)) - return -EFAULT; - val = gus_audio_set_bits(val); - break; - - case SOUND_PCM_READ_BITS: - val = gus_audio_bits; - break; - - case SOUND_PCM_WRITE_FILTER: /* NOT POSSIBLE */ - case SOUND_PCM_READ_FILTER: - val = -EINVAL; - break; - default: - return -EINVAL; - } - return put_user(val, (int __user *)arg); -} - -static void gus_audio_reset(int dev) -{ - if (recording_active) - { - gus_write8(0x49, 0x00); /* Halt recording */ - set_input_volumes(); - } -} - -static int saved_iw_mode; /* A hack hack hack */ - -static int gus_audio_open(int dev, int mode) -{ - if (gus_busy) - return -EBUSY; - - if (gus_pnp_flag && mode & OPEN_READ) - { -/* printk(KERN_ERR "GUS: Audio device #%d is playback only.\n", dev);*/ - return -EIO; - } - gus_initialize(); - - gus_busy = 1; - active_device = 0; - - saved_iw_mode = iw_mode; - if (iw_mode) - { - /* There are some problems with audio in enhanced mode so disable it */ - gus_write8(0x19, gus_read8(0x19) & ~0x01); /* Disable enhanced mode */ - iw_mode = 0; - } - - gus_reset(); - reset_sample_memory(); - gus_select_max_voices(14); - - pcm_active = 0; - dma_active = 0; - pcm_opened = 1; - if (mode & OPEN_READ) - { - recording_active = 1; - set_input_volumes(); - } - only_read_access = !(mode & OPEN_WRITE); - only_8_bits = mode & OPEN_READ; - if (only_8_bits) - audio_devs[dev]->format_mask = AFMT_U8; - else - audio_devs[dev]->format_mask = AFMT_U8 | AFMT_S16_LE; - - return 0; -} - -static void gus_audio_close(int dev) -{ - iw_mode = saved_iw_mode; - gus_reset(); - gus_busy = 0; - pcm_opened = 0; - active_device = 0; - - if (recording_active) - { - gus_write8(0x49, 0x00); /* Halt recording */ - set_input_volumes(); - } - recording_active = 0; -} - -static void gus_audio_update_volume(void) -{ - unsigned long flags; - int voice; - - if (pcm_active && pcm_opened) - for (voice = 0; voice < gus_audio_channels; voice++) - { - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_rampoff(); - gus_voice_volume(1530 + (25 * gus_pcm_volume)); - gus_ramp_range(65, 1530 + (25 * gus_pcm_volume)); - spin_unlock_irqrestore(&gus_lock,flags); - } -} - -static void play_next_pcm_block(void) -{ - unsigned long flags; - int speed = gus_audio_speed; - int this_one, is16bits, chn; - unsigned long dram_loc; - unsigned char mode[2], ramp_mode[2]; - - if (!pcm_qlen) - return; - - this_one = pcm_head; - - for (chn = 0; chn < gus_audio_channels; chn++) - { - mode[chn] = 0x00; - ramp_mode[chn] = 0x03; /* Ramping and rollover off */ - - if (chn == 0) - { - mode[chn] |= 0x20; /* Loop IRQ */ - voices[chn].loop_irq_mode = LMODE_PCM; - } - if (gus_audio_bits != 8) - { - is16bits = 1; - mode[chn] |= 0x04; /* 16 bit data */ - } - else - is16bits = 0; - - dram_loc = this_one * pcm_bsize; - dram_loc += chn * pcm_banksize; - - if (this_one == (pcm_nblk - 1)) /* Last fragment of the DRAM buffer */ - { - mode[chn] |= 0x08; /* Enable loop */ - ramp_mode[chn] = 0x03; /* Disable rollover bit */ - } - else - { - if (chn == 0) - ramp_mode[chn] = 0x04; /* Enable rollover bit */ - } - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(chn); - gus_voice_freq(speed); - - if (gus_audio_channels == 1) - gus_voice_balance(7); /* mono */ - else if (chn == 0) - gus_voice_balance(0); /* left */ - else - gus_voice_balance(15); /* right */ - - if (!pcm_active) /* Playback not already active */ - { - /* - * The playback was not started yet (or there has been a pause). - * Start the voice (again) and ask for a rollover irq at the end of - * this_one block. If this_one one is last of the buffers, use just - * the normal loop with irq. - */ - - gus_voice_off(); - gus_rampoff(); - gus_voice_volume(1530 + (25 * gus_pcm_volume)); - gus_ramp_range(65, 1530 + (25 * gus_pcm_volume)); - - gus_write_addr(0x0a, chn * pcm_banksize, 0, is16bits); /* Starting position */ - gus_write_addr(0x02, chn * pcm_banksize, 0, is16bits); /* Loop start */ - - if (chn != 0) - gus_write_addr(0x04, pcm_banksize + (pcm_bsize * pcm_nblk) - 1, - 0, is16bits); /* Loop end location */ - } - if (chn == 0) - gus_write_addr(0x04, dram_loc + pcm_bsize - 1, - 0, is16bits); /* Loop end location */ - else - mode[chn] |= 0x08; /* Enable looping */ - spin_unlock_irqrestore(&gus_lock,flags); - } - for (chn = 0; chn < gus_audio_channels; chn++) - { - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(chn); - gus_write8(0x0d, ramp_mode[chn]); - if (iw_mode) - gus_write8(0x15, 0x00); /* Reset voice deactivate bit of SMSI */ - gus_voice_on(mode[chn]); - spin_unlock_irqrestore(&gus_lock,flags); - } - pcm_active = 1; -} - -static void gus_transfer_output_block(int dev, unsigned long buf, - int total_count, int intrflag, int chn) -{ - /* - * This routine transfers one block of audio data to the DRAM. In mono mode - * it's called just once. When in stereo mode, this_one routine is called - * once for both channels. - * - * The left/mono channel data is transferred to the beginning of dram and the - * right data to the area pointed by gus_page_size. - */ - - int this_one, count; - unsigned long flags; - unsigned char dma_command; - unsigned long address, hold_address; - - spin_lock_irqsave(&gus_lock,flags); - - count = total_count / gus_audio_channels; - - if (chn == 0) - { - if (pcm_qlen >= pcm_nblk) - printk(KERN_WARNING "GUS Warning: PCM buffers out of sync\n"); - - this_one = pcm_current_block = pcm_tail; - pcm_qlen++; - pcm_tail = (pcm_tail + 1) % pcm_nblk; - pcm_datasize[this_one] = count; - } - else - this_one = pcm_current_block; - - gus_write8(0x41, 0); /* Disable GF1 DMA */ - DMAbuf_start_dma(dev, buf + (chn * count), count, DMA_MODE_WRITE); - - address = this_one * pcm_bsize; - address += chn * pcm_banksize; - - if (audio_devs[dev]->dmap_out->dma > 3) - { - hold_address = address; - address = address >> 1; - address &= 0x0001ffffL; - address |= (hold_address & 0x000c0000L); - } - gus_write16(0x42, (address >> 4) & 0xffff); /* DRAM DMA address */ - - dma_command = 0x21; /* IRQ enable, DMA start */ - - if (gus_audio_bits != 8) - dma_command |= 0x40; /* 16 bit _DATA_ */ - else - dma_command |= 0x80; /* Invert MSB */ - - if (audio_devs[dev]->dmap_out->dma > 3) - dma_command |= 0x04; /* 16 bit DMA channel */ - - gus_write8(0x41, dma_command); /* Kick start */ - - if (chn == (gus_audio_channels - 1)) /* Last channel */ - { - /* - * Last (right or mono) channel data - */ - dma_active = 1; /* DMA started. There is a unacknowledged buffer */ - active_device = GUS_DEV_PCM_DONE; - if (!pcm_active && (pcm_qlen > 1 || count < pcm_bsize)) - { - play_next_pcm_block(); - } - } - else - { - /* - * Left channel data. The right channel - * is transferred after DMA interrupt - */ - active_device = GUS_DEV_PCM_CONTINUE; - } - - spin_unlock_irqrestore(&gus_lock,flags); -} - -static void gus_uninterleave8(char *buf, int l) -{ -/* This routine uninterleaves 8 bit stereo output (LRLRLR->LLLRRR) */ - int i, p = 0, halfsize = l / 2; - char *buf2 = buf + halfsize, *src = bounce_buf; - - memcpy(bounce_buf, buf, l); - - for (i = 0; i < halfsize; i++) - { - buf[i] = src[p++]; /* Left channel */ - buf2[i] = src[p++]; /* Right channel */ - } -} - -static void gus_uninterleave16(short *buf, int l) -{ -/* This routine uninterleaves 16 bit stereo output (LRLRLR->LLLRRR) */ - int i, p = 0, halfsize = l / 2; - short *buf2 = buf + halfsize, *src = (short *) bounce_buf; - - memcpy(bounce_buf, (char *) buf, l * 2); - - for (i = 0; i < halfsize; i++) - { - buf[i] = src[p++]; /* Left channel */ - buf2[i] = src[p++]; /* Right channel */ - } -} - -static void gus_audio_output_block(int dev, unsigned long buf, int total_count, - int intrflag) -{ - struct dma_buffparms *dmap = audio_devs[dev]->dmap_out; - - dmap->flags |= DMA_NODMA | DMA_NOTIMEOUT; - - pcm_current_buf = buf; - pcm_current_count = total_count; - pcm_current_intrflag = intrflag; - pcm_current_dev = dev; - if (gus_audio_channels == 2) - { - char *b = dmap->raw_buf + (buf - dmap->raw_buf_phys); - - if (gus_audio_bits == 8) - gus_uninterleave8(b, total_count); - else - gus_uninterleave16((short *) b, total_count / 2); - } - gus_transfer_output_block(dev, buf, total_count, intrflag, 0); -} - -static void gus_audio_start_input(int dev, unsigned long buf, int count, - int intrflag) -{ - unsigned long flags; - unsigned char mode; - - spin_lock_irqsave(&gus_lock,flags); - - DMAbuf_start_dma(dev, buf, count, DMA_MODE_READ); - mode = 0xa0; /* DMA IRQ enabled, invert MSB */ - - if (audio_devs[dev]->dmap_in->dma > 3) - mode |= 0x04; /* 16 bit DMA channel */ - if (gus_audio_channels > 1) - mode |= 0x02; /* Stereo */ - mode |= 0x01; /* DMA enable */ - - gus_write8(0x49, mode); - spin_unlock_irqrestore(&gus_lock,flags); -} - -static int gus_audio_prepare_for_input(int dev, int bsize, int bcount) -{ - unsigned int rate; - - gus_audio_bsize = bsize; - audio_devs[dev]->dmap_in->flags |= DMA_NODMA; - rate = (((9878400 + gus_audio_speed / 2) / (gus_audio_speed + 2)) + 8) / 16; - - gus_write8(0x48, rate & 0xff); /* Set sampling rate */ - - if (gus_audio_bits != 8) - { -/* printk("GUS Error: 16 bit recording not supported\n");*/ - return -EINVAL; - } - return 0; -} - -static int gus_audio_prepare_for_output(int dev, int bsize, int bcount) -{ - int i; - - long mem_ptr, mem_size; - - audio_devs[dev]->dmap_out->flags |= DMA_NODMA | DMA_NOTIMEOUT; - mem_ptr = 0; - mem_size = gus_mem_size / gus_audio_channels; - - if (mem_size > (256 * 1024)) - mem_size = 256 * 1024; - - pcm_bsize = bsize / gus_audio_channels; - pcm_head = pcm_tail = pcm_qlen = 0; - - pcm_nblk = 2; /* MAX_PCM_BUFFERS; */ - if ((pcm_bsize * pcm_nblk) > mem_size) - pcm_nblk = mem_size / pcm_bsize; - - for (i = 0; i < pcm_nblk; i++) - pcm_datasize[i] = 0; - - pcm_banksize = pcm_nblk * pcm_bsize; - - if (gus_audio_bits != 8 && pcm_banksize == (256 * 1024)) - pcm_nblk--; - gus_write8(0x41, 0); /* Disable GF1 DMA */ - return 0; -} - -static int gus_local_qlen(int dev) -{ - return pcm_qlen; -} - - -static struct audio_driver gus_audio_driver = -{ - .owner = THIS_MODULE, - .open = gus_audio_open, - .close = gus_audio_close, - .output_block = gus_audio_output_block, - .start_input = gus_audio_start_input, - .ioctl = gus_audio_ioctl, - .prepare_for_input = gus_audio_prepare_for_input, - .prepare_for_output = gus_audio_prepare_for_output, - .halt_io = gus_audio_reset, - .local_qlen = gus_local_qlen, -}; - -static void guswave_setup_voice(int dev, int voice, int chn) -{ - struct channel_info *info = &synth_devs[dev]->chn_info[chn]; - - guswave_set_instr(dev, voice, info->pgm_num); - voices[voice].expression_vol = info->controllers[CTL_EXPRESSION]; /* Just MSB */ - voices[voice].main_vol = (info->controllers[CTL_MAIN_VOLUME] * 100) / (unsigned) 128; - voices[voice].panning = (info->controllers[CTL_PAN] * 2) - 128; - voices[voice].bender = 0; - voices[voice].bender_range = info->bender_range; - - if (chn == 9) - voices[voice].fixed_pitch = 1; -} - -static void guswave_bender(int dev, int voice, int value) -{ - int freq; - unsigned long flags; - - voices[voice].bender = value - 8192; - freq = compute_finetune(voices[voice].orig_freq, value - 8192, voices[voice].bender_range, 0); - voices[voice].current_freq = freq; - - spin_lock_irqsave(&gus_lock,flags); - gus_select_voice(voice); - gus_voice_freq(freq); - spin_unlock_irqrestore(&gus_lock,flags); -} - -static int guswave_alloc(int dev, int chn, int note, struct voice_alloc_info *alloc) -{ - int i, p, best = -1, best_time = 0x7fffffff; - - p = alloc->ptr; - /* - * First look for a completely stopped voice - */ - - for (i = 0; i < alloc->max_voice; i++) - { - if (alloc->map[p] == 0) - { - alloc->ptr = p; - return p; - } - if (alloc->alloc_times[p] < best_time) - { - best = p; - best_time = alloc->alloc_times[p]; - } - p = (p + 1) % alloc->max_voice; - } - - /* - * Then look for a releasing voice - */ - - for (i = 0; i < alloc->max_voice; i++) - { - if (alloc->map[p] == 0xffff) - { - alloc->ptr = p; - return p; - } - p = (p + 1) % alloc->max_voice; - } - if (best >= 0) - p = best; - - alloc->ptr = p; - return p; -} - -static struct synth_operations guswave_operations = -{ - .owner = THIS_MODULE, - .id = "GUS", - .info = &gus_info, - .midi_dev = 0, - .synth_type = SYNTH_TYPE_SAMPLE, - .synth_subtype = SAMPLE_TYPE_GUS, - .open = guswave_open, - .close = guswave_close, - .ioctl = guswave_ioctl, - .kill_note = guswave_kill_note, - .start_note = guswave_start_note, - .set_instr = guswave_set_instr, - .reset = guswave_reset, - .hw_control = guswave_hw_control, - .load_patch = guswave_load_patch, - .aftertouch = guswave_aftertouch, - .controller = guswave_controller, - .panning = guswave_panning, - .volume_method = guswave_volume_method, - .bender = guswave_bender, - .alloc_voice = guswave_alloc, - .setup_voice = guswave_setup_voice -}; - -static void set_input_volumes(void) -{ - unsigned long flags; - unsigned char mask = 0xff & ~0x06; /* Just line out enabled */ - - if (have_gus_max) /* Don't disturb GUS MAX */ - return; - - spin_lock_irqsave(&gus_lock,flags); - - /* - * Enable channels having vol > 10% - * Note! bit 0x01 means the line in DISABLED while 0x04 means - * the mic in ENABLED. - */ - if (gus_line_vol > 10) - mask &= ~0x01; - if (gus_mic_vol > 10) - mask |= 0x04; - - if (recording_active) - { - /* - * Disable channel, if not selected for recording - */ - if (!(gus_recmask & SOUND_MASK_LINE)) - mask |= 0x01; - if (!(gus_recmask & SOUND_MASK_MIC)) - mask &= ~0x04; - } - mix_image &= ~0x07; - mix_image |= mask & 0x07; - outb((mix_image), u_Mixer); - - spin_unlock_irqrestore(&gus_lock,flags); -} - -#define MIX_DEVS (SOUND_MASK_MIC|SOUND_MASK_LINE| \ - SOUND_MASK_SYNTH|SOUND_MASK_PCM) - -int gus_default_mixer_ioctl(int dev, unsigned int cmd, void __user *arg) -{ - int vol, val; - - if (((cmd >> 8) & 0xff) != 'M') - return -EINVAL; - - if (!access_ok(VERIFY_WRITE, arg, sizeof(int))) - return -EFAULT; - - if (_SIOC_DIR(cmd) & _SIOC_WRITE) - { - if (__get_user(val, (int __user *) arg)) - return -EFAULT; - - switch (cmd & 0xff) - { - case SOUND_MIXER_RECSRC: - gus_recmask = val & MIX_DEVS; - if (!(gus_recmask & (SOUND_MASK_MIC | SOUND_MASK_LINE))) - gus_recmask = SOUND_MASK_MIC; - /* Note! Input volumes are updated during next open for recording */ - val = gus_recmask; - break; - - case SOUND_MIXER_MIC: - vol = val & 0xff; - if (vol < 0) - vol = 0; - if (vol > 100) - vol = 100; - gus_mic_vol = vol; - set_input_volumes(); - val = vol | (vol << 8); - break; - - case SOUND_MIXER_LINE: - vol = val & 0xff; - if (vol < 0) - vol = 0; - if (vol > 100) - vol = 100; - gus_line_vol = vol; - set_input_volumes(); - val = vol | (vol << 8); - break; - - case SOUND_MIXER_PCM: - gus_pcm_volume = val & 0xff; - if (gus_pcm_volume < 0) - gus_pcm_volume = 0; - if (gus_pcm_volume > 100) - gus_pcm_volume = 100; - gus_audio_update_volume(); - val = gus_pcm_volume | (gus_pcm_volume << 8); - break; - - case SOUND_MIXER_SYNTH: - gus_wave_volume = val & 0xff; - if (gus_wave_volume < 0) - gus_wave_volume = 0; - if (gus_wave_volume > 100) - gus_wave_volume = 100; - if (active_device == GUS_DEV_WAVE) - { - int voice; - for (voice = 0; voice < nr_voices; voice++) - dynamic_volume_change(voice); /* Apply the new vol */ - } - val = gus_wave_volume | (gus_wave_volume << 8); - break; - - default: - return -EINVAL; - } - } - else - { - switch (cmd & 0xff) - { - /* - * Return parameters - */ - case SOUND_MIXER_RECSRC: - val = gus_recmask; - break; - - case SOUND_MIXER_DEVMASK: - val = MIX_DEVS; - break; - - case SOUND_MIXER_STEREODEVS: - val = 0; - break; - - case SOUND_MIXER_RECMASK: - val = SOUND_MASK_MIC | SOUND_MASK_LINE; - break; - - case SOUND_MIXER_CAPS: - val = 0; - break; - - case SOUND_MIXER_MIC: - val = gus_mic_vol | (gus_mic_vol << 8); - break; - - case SOUND_MIXER_LINE: - val = gus_line_vol | (gus_line_vol << 8); - break; - - case SOUND_MIXER_PCM: - val = gus_pcm_volume | (gus_pcm_volume << 8); - break; - - case SOUND_MIXER_SYNTH: - val = gus_wave_volume | (gus_wave_volume << 8); - break; - - default: - return -EINVAL; - } - } - return __put_user(val, (int __user *)arg); -} - -static struct mixer_operations gus_mixer_operations = -{ - .owner = THIS_MODULE, - .id = "GUS", - .name = "Gravis Ultrasound", - .ioctl = gus_default_mixer_ioctl -}; - -static int __init gus_default_mixer_init(void) -{ - int n; - - if ((n = sound_alloc_mixerdev()) != -1) - { - /* - * Don't install if there is another - * mixer - */ - mixer_devs[n] = &gus_mixer_operations; - } - if (have_gus_max) - { - /* - * Enable all mixer channels on the GF1 side. Otherwise recording will - * not be possible using GUS MAX. - */ - mix_image &= ~0x07; - mix_image |= 0x04; /* All channels enabled */ - outb((mix_image), u_Mixer); - } - return n; -} - -void __init gus_wave_init(struct address_info *hw_config) -{ - unsigned long flags; - unsigned char val; - char *model_num = "2.4"; - char tmp[64]; - int gus_type = 0x24; /* 2.4 */ - - int irq = hw_config->irq, dma = hw_config->dma, dma2 = hw_config->dma2; - int sdev; - - hw_config->slots[0] = -1; /* No wave */ - hw_config->slots[1] = -1; /* No ad1848 */ - hw_config->slots[4] = -1; /* No audio */ - hw_config->slots[5] = -1; /* No mixer */ - - if (!gus_pnp_flag) - { - if (irq < 0 || irq > 15) - { - printk(KERN_ERR "ERROR! Invalid IRQ#%d. GUS Disabled", irq); - return; - } - } - - if (dma < 0 || dma > 7 || dma == 4) - { - printk(KERN_ERR "ERROR! Invalid DMA#%d. GUS Disabled", dma); - return; - } - gus_irq = irq; - gus_dma = dma; - gus_dma2 = dma2; - gus_hw_config = hw_config; - - if (gus_dma2 == -1) - gus_dma2 = dma; - - /* - * Try to identify the GUS model. - * - * Versions < 3.6 don't have the digital ASIC. Try to probe it first. - */ - - spin_lock_irqsave(&gus_lock,flags); - outb((0x20), gus_base + 0x0f); - val = inb(gus_base + 0x0f); - spin_unlock_irqrestore(&gus_lock,flags); - - if (gus_pnp_flag || (val != 0xff && (val & 0x06))) /* Should be 0x02?? */ - { - int ad_flags = 0; - - if (gus_pnp_flag) - ad_flags = 0x12345678; /* Interwave "magic" */ - /* - * It has the digital ASIC so the card is at least v3.4. - * Next try to detect the true model. - */ - - if (gus_pnp_flag) /* Hack hack hack */ - val = 10; - else - val = inb(u_MixSelect); - - /* - * Value 255 means pre-3.7 which don't have mixer. - * Values 5 thru 9 mean v3.7 which has a ICS2101 mixer. - * 10 and above is GUS MAX which has the CS4231 codec/mixer. - * - */ - - if (val == 255 || val < 5) - { - model_num = "3.4"; - gus_type = 0x34; - } - else if (val < 10) - { - model_num = "3.7"; - gus_type = 0x37; - mixer_type = ICS2101; - request_region(u_MixSelect, 1, "GUS mixer"); - } - else - { - struct resource *ports; - ports = request_region(gus_base + 0x10c, 4, "ad1848"); - model_num = "MAX"; - gus_type = 0x40; - mixer_type = CS4231; -#ifdef CONFIG_SOUND_GUSMAX - { - unsigned char max_config = 0x40; /* Codec enable */ - - if (gus_dma2 == -1) - gus_dma2 = gus_dma; - - if (gus_dma > 3) - max_config |= 0x10; /* 16 bit capture DMA */ - - if (gus_dma2 > 3) - max_config |= 0x20; /* 16 bit playback DMA */ - - max_config |= (gus_base >> 4) & 0x0f; /* Extract the X from 2X0 */ - - outb((max_config), gus_base + 0x106); /* UltraMax control */ - } - - if (!ports) - goto no_cs4231; - - if (ad1848_detect(ports, &ad_flags, hw_config->osp)) - { - char *name = "GUS MAX"; - int old_num_mixers = num_mixers; - - if (gus_pnp_flag) - name = "GUS PnP"; - - gus_mic_vol = gus_line_vol = gus_pcm_volume = 100; - gus_wave_volume = 90; - have_gus_max = 1; - if (hw_config->name) - name = hw_config->name; - - hw_config->slots[1] = ad1848_init(name, ports, - -irq, gus_dma2, /* Playback DMA */ - gus_dma, /* Capture DMA */ - 1, /* Share DMA channels with GF1 */ - hw_config->osp, - THIS_MODULE); - - if (num_mixers > old_num_mixers) - { - /* GUS has it's own mixer map */ - AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_SYNTH); - AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_CD); - AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_LINE); - } - } - else { - release_region(gus_base + 0x10c, 4); - no_cs4231: - printk(KERN_WARNING "GUS: No CS4231 ??"); - } -#else - printk(KERN_ERR "GUS MAX found, but not compiled in\n"); -#endif - } - } - else - { - /* - * ASIC not detected so the card must be 2.2 or 2.4. - * There could still be the 16-bit/mixer daughter card. - */ - } - - if (hw_config->name) - snprintf(tmp, sizeof(tmp), "%s (%dk)", hw_config->name, - (int) gus_mem_size / 1024); - else if (gus_pnp_flag) - snprintf(tmp, sizeof(tmp), "Gravis UltraSound PnP (%dk)", - (int) gus_mem_size / 1024); - else - snprintf(tmp, sizeof(tmp), "Gravis UltraSound %s (%dk)", model_num, - (int) gus_mem_size / 1024); - - - samples = (struct patch_info *)vmalloc((MAX_SAMPLE + 1) * sizeof(*samples)); - if (samples == NULL) - { - printk(KERN_WARNING "gus_init: Cant allocate memory for instrument tables\n"); - return; - } - conf_printf(tmp, hw_config); - strlcpy(gus_info.name, tmp, sizeof(gus_info.name)); - - if ((sdev = sound_alloc_synthdev()) == -1) - printk(KERN_WARNING "gus_init: Too many synthesizers\n"); - else - { - voice_alloc = &guswave_operations.alloc; - if (iw_mode) - guswave_operations.id = "IWAVE"; - hw_config->slots[0] = sdev; - synth_devs[sdev] = &guswave_operations; - sequencer_init(); - gus_tmr_install(gus_base + 8); - } - - reset_sample_memory(); - - gus_initialize(); - - if ((gus_mem_size > 0) && !gus_no_wave_dma) - { - hw_config->slots[4] = -1; - if ((gus_devnum = sound_install_audiodrv(AUDIO_DRIVER_VERSION, - "Ultrasound", - &gus_audio_driver, - sizeof(struct audio_driver), - NEEDS_RESTART | - ((!iw_mode && dma2 != dma && dma2 != -1) ? - DMA_DUPLEX : 0), - AFMT_U8 | AFMT_S16_LE, - NULL, dma, dma2)) < 0) - { - return; - } - - hw_config->slots[4] = gus_devnum; - audio_devs[gus_devnum]->min_fragment = 9; /* 512k */ - audio_devs[gus_devnum]->max_fragment = 11; /* 8k (must match size of bounce_buf */ - audio_devs[gus_devnum]->mixer_dev = -1; /* Next mixer# */ - audio_devs[gus_devnum]->flags |= DMA_HARDSTOP; - } - - /* - * Mixer dependent initialization. - */ - - switch (mixer_type) - { - case ICS2101: - gus_mic_vol = gus_line_vol = gus_pcm_volume = 100; - gus_wave_volume = 90; - request_region(u_MixSelect, 1, "GUS mixer"); - hw_config->slots[5] = ics2101_mixer_init(); - audio_devs[gus_devnum]->mixer_dev = hw_config->slots[5]; /* Next mixer# */ - return; - - case CS4231: - /* Initialized elsewhere (ad1848.c) */ - default: - hw_config->slots[5] = gus_default_mixer_init(); - audio_devs[gus_devnum]->mixer_dev = hw_config->slots[5]; /* Next mixer# */ - return; - } -} - -void __exit gus_wave_unload(struct address_info *hw_config) -{ -#ifdef CONFIG_SOUND_GUSMAX - if (have_gus_max) - { - ad1848_unload(gus_base + 0x10c, - -gus_irq, - gus_dma2, /* Playback DMA */ - gus_dma, /* Capture DMA */ - 1); /* Share DMA channels with GF1 */ - } -#endif - - if (mixer_type == ICS2101) - { - release_region(u_MixSelect, 1); - } - if (hw_config->slots[0] != -1) - sound_unload_synthdev(hw_config->slots[0]); - if (hw_config->slots[1] != -1) - sound_unload_audiodev(hw_config->slots[1]); - if (hw_config->slots[2] != -1) - sound_unload_mididev(hw_config->slots[2]); - if (hw_config->slots[4] != -1) - sound_unload_audiodev(hw_config->slots[4]); - if (hw_config->slots[5] != -1) - sound_unload_mixerdev(hw_config->slots[5]); - - vfree(samples); - samples=NULL; -} -/* called in interrupt context */ -static void do_loop_irq(int voice) -{ - unsigned char tmp; - int mode, parm; - - spin_lock(&gus_lock); - gus_select_voice(voice); - - tmp = gus_read8(0x00); - tmp &= ~0x20; /* - * Disable wave IRQ for this_one voice - */ - gus_write8(0x00, tmp); - - if (tmp & 0x03) /* Voice stopped */ - voice_alloc->map[voice] = 0; - - mode = voices[voice].loop_irq_mode; - voices[voice].loop_irq_mode = 0; - parm = voices[voice].loop_irq_parm; - - switch (mode) - { - case LMODE_FINISH: /* - * Final loop finished, shoot volume down - */ - - if ((int) (gus_read16(0x09) >> 4) < 100) /* - * Get current volume - */ - { - gus_voice_off(); - gus_rampoff(); - gus_voice_init(voice); - break; - } - gus_ramp_range(65, 4065); - gus_ramp_rate(0, 63); /* - * Fastest possible rate - */ - gus_rampon(0x20 | 0x40); /* - * Ramp down, once, irq - */ - voices[voice].volume_irq_mode = VMODE_HALT; - break; - - case LMODE_PCM_STOP: - pcm_active = 0; /* Signal to the play_next_pcm_block routine */ - case LMODE_PCM: - { - pcm_qlen--; - pcm_head = (pcm_head + 1) % pcm_nblk; - if (pcm_qlen && pcm_active) - { - play_next_pcm_block(); - } - else - { - /* Underrun. Just stop the voice */ - gus_select_voice(0); /* Left channel */ - gus_voice_off(); - gus_rampoff(); - gus_select_voice(1); /* Right channel */ - gus_voice_off(); - gus_rampoff(); - pcm_active = 0; - } - - /* - * If the queue was full before this interrupt, the DMA transfer was - * suspended. Let it continue now. - */ - - if (audio_devs[gus_devnum]->dmap_out->qlen > 0) - DMAbuf_outputintr(gus_devnum, 0); - } - break; - - default: - break; - } - spin_unlock(&gus_lock); -} - -static void do_volume_irq(int voice) -{ - unsigned char tmp; - int mode, parm; - unsigned long flags; - - spin_lock_irqsave(&gus_lock,flags); - - gus_select_voice(voice); - tmp = gus_read8(0x0d); - tmp &= ~0x20; /* - * Disable volume ramp IRQ - */ - gus_write8(0x0d, tmp); - - mode = voices[voice].volume_irq_mode; - voices[voice].volume_irq_mode = 0; - parm = voices[voice].volume_irq_parm; - - switch (mode) - { - case VMODE_HALT: /* Decay phase finished */ - if (iw_mode) - gus_write8(0x15, 0x02); /* Set voice deactivate bit of SMSI */ - spin_unlock_irqrestore(&gus_lock,flags); - gus_voice_init(voice); - break; - - case VMODE_ENVELOPE: - gus_rampoff(); - spin_unlock_irqrestore(&gus_lock,flags); - step_envelope(voice); - break; - - case VMODE_START_NOTE: - spin_unlock_irqrestore(&gus_lock,flags); - guswave_start_note2(voices[voice].dev_pending, voice, - voices[voice].note_pending, voices[voice].volume_pending); - if (voices[voice].kill_pending) - guswave_kill_note(voices[voice].dev_pending, voice, - voices[voice].note_pending, 0); - - if (voices[voice].sample_pending >= 0) - { - guswave_set_instr(voices[voice].dev_pending, voice, - voices[voice].sample_pending); - voices[voice].sample_pending = -1; - } - break; - - default: - spin_unlock_irqrestore(&gus_lock,flags); - } -} -/* called in irq context */ -void gus_voice_irq(void) -{ - unsigned long wave_ignore = 0, volume_ignore = 0; - unsigned long voice_bit; - - unsigned char src, voice; - - while (1) - { - src = gus_read8(0x0f); /* - * Get source info - */ - voice = src & 0x1f; - src &= 0xc0; - - if (src == (0x80 | 0x40)) - return; /* - * No interrupt - */ - - voice_bit = 1 << voice; - - if (!(src & 0x80)) /* - * Wave IRQ pending - */ - if (!(wave_ignore & voice_bit) && (int) voice < nr_voices) /* - * Not done - * yet - */ - { - wave_ignore |= voice_bit; - do_loop_irq(voice); - } - if (!(src & 0x40)) /* - * Volume IRQ pending - */ - if (!(volume_ignore & voice_bit) && (int) voice < nr_voices) /* - * Not done - * yet - */ - { - volume_ignore |= voice_bit; - do_volume_irq(voice); - } - } -} - -void guswave_dma_irq(void) -{ - unsigned char status; - - status = gus_look8(0x41); /* Get DMA IRQ Status */ - if (status & 0x40) /* DMA interrupt pending */ - switch (active_device) - { - case GUS_DEV_WAVE: - wake_up(&dram_sleeper); - break; - - case GUS_DEV_PCM_CONTINUE: /* Left channel data transferred */ - gus_write8(0x41, 0); /* Disable GF1 DMA */ - gus_transfer_output_block(pcm_current_dev, pcm_current_buf, - pcm_current_count, - pcm_current_intrflag, 1); - break; - - case GUS_DEV_PCM_DONE: /* Right or mono channel data transferred */ - gus_write8(0x41, 0); /* Disable GF1 DMA */ - if (pcm_qlen < pcm_nblk) - { - dma_active = 0; - if (gus_busy) - { - if (audio_devs[gus_devnum]->dmap_out->qlen > 0) - DMAbuf_outputintr(gus_devnum, 0); - } - } - break; - - default: - break; - } - status = gus_look8(0x49); /* - * Get Sampling IRQ Status - */ - if (status & 0x40) /* - * Sampling Irq pending - */ - { - DMAbuf_inputintr(gus_devnum); - } -} - -/* - * Timer stuff - */ - -static volatile int select_addr, data_addr; -static volatile int curr_timer; - -void gus_timer_command(unsigned int addr, unsigned int val) -{ - int i; - - outb(((unsigned char) (addr & 0xff)), select_addr); - - for (i = 0; i < 2; i++) - inb(select_addr); - - outb(((unsigned char) (val & 0xff)), data_addr); - - for (i = 0; i < 2; i++) - inb(select_addr); -} - -static void arm_timer(int timer, unsigned int interval) -{ - curr_timer = timer; - - if (timer == 1) - { - gus_write8(0x46, 256 - interval); /* Set counter for timer 1 */ - gus_write8(0x45, 0x04); /* Enable timer 1 IRQ */ - gus_timer_command(0x04, 0x01); /* Start timer 1 */ - } - else - { - gus_write8(0x47, 256 - interval); /* Set counter for timer 2 */ - gus_write8(0x45, 0x08); /* Enable timer 2 IRQ */ - gus_timer_command(0x04, 0x02); /* Start timer 2 */ - } - - gus_timer_enabled = 1; -} - -static unsigned int gus_tmr_start(int dev, unsigned int usecs_per_tick) -{ - int timer_no, resolution; - int divisor; - - if (usecs_per_tick > (256 * 80)) - { - timer_no = 2; - resolution = 320; /* usec */ - } - else - { - timer_no = 1; - resolution = 80; /* usec */ - } - divisor = (usecs_per_tick + (resolution / 2)) / resolution; - arm_timer(timer_no, divisor); - - return divisor * resolution; -} - -static void gus_tmr_disable(int dev) -{ - gus_write8(0x45, 0); /* Disable both timers */ - gus_timer_enabled = 0; -} - -static void gus_tmr_restart(int dev) -{ - if (curr_timer == 1) - gus_write8(0x45, 0x04); /* Start timer 1 again */ - else - gus_write8(0x45, 0x08); /* Start timer 2 again */ - gus_timer_enabled = 1; -} - -static struct sound_lowlev_timer gus_tmr = -{ - 0, - 1, - gus_tmr_start, - gus_tmr_disable, - gus_tmr_restart -}; - -static void gus_tmr_install(int io_base) -{ - struct sound_lowlev_timer *tmr; - - select_addr = io_base; - data_addr = io_base + 1; - - tmr = &gus_tmr; - -#ifdef THIS_GETS_FIXED - sound_timer_init(&gus_tmr, "GUS"); -#endif -} |
