Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/oss/gus_wave.c b/sound/oss/gus_wave.c
new file mode 100644
index 0000000..942d518
--- /dev/null
+++ b/sound/oss/gus_wave.c
@@ -0,0 +1,3464 @@
+/*
+ * sound/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
+}