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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | /* * sound/gus_card.c * * Detection routine for the Gravis Ultrasound. * * Copyright by Hannu Savolainen 1993 * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. 2. * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include "sound_config.h" #if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_GUS) #include "gus_hw.h" void gusintr (INT_HANDLER_PARMS (irq, dummy)); int gus_base, gus_irq, gus_dma; extern int gus_wave_volume; extern int gus_pcm_volume; extern int have_gus_max; long attach_gus_card (long mem_start, struct address_info *hw_config) { int io_addr; snd_set_irq_handler (hw_config->irq, gusintr, "Gravis Ultrasound"); if (gus_wave_detect (hw_config->io_base)) /* * Try first the default */ { mem_start = gus_wave_init (mem_start, hw_config->irq, hw_config->dma); #ifndef EXCLUDE_MIDI mem_start = gus_midi_init (mem_start); #endif #ifndef EXCLUDE_SEQUENCER sound_timer_init (hw_config->io_base + 8); #endif return mem_start; } #ifndef EXCLUDE_GUS_IODETECT /* * Look at the possible base addresses (0x2X0, X=1, 2, 3, 4, 5, 6) */ for (io_addr = 0x210; io_addr <= 0x260; io_addr += 0x10) if (io_addr != hw_config->io_base) /* * Already tested */ if (gus_wave_detect (io_addr)) { printk (" WARNING! GUS found at %x, config was %x ", io_addr, hw_config->io_base); mem_start = gus_wave_init (mem_start, hw_config->irq, hw_config->dma); #ifndef EXCLUDE_MIDI mem_start = gus_midi_init (mem_start); #endif #ifndef EXCLUDE_SEQUENCER sound_timer_init (io_addr + 8); #endif return mem_start; } #endif return mem_start; /* * Not detected */ } int probe_gus (struct address_info *hw_config) { int io_addr; if (gus_wave_detect (hw_config->io_base)) return 1; #ifndef EXCLUDE_GUS_IODETECT /* * Look at the possible base addresses (0x2X0, X=1, 2, 3, 4, 5, 6) */ for (io_addr = 0x210; io_addr <= 0x260; io_addr += 0x10) if (io_addr != hw_config->io_base) /* * Already tested */ if (gus_wave_detect (io_addr)) return 1; #endif return 0; } void gusintr (INT_HANDLER_PARMS (irq, dummy)) { unsigned char src; #ifdef linux sti (); #endif #ifndef EXCLUDE_GUSMAX if (have_gus_max) ad1848_interrupt (INT_HANDLER_CALL (irq)); #endif while (1) { if (!(src = INB (u_IrqStatus))) return; if (src & DMA_TC_IRQ) { guswave_dma_irq (); } if (src & (MIDI_TX_IRQ | MIDI_RX_IRQ)) { #ifndef EXCLUDE_MIDI gus_midi_interrupt (0); #endif } if (src & (GF1_TIMER1_IRQ | GF1_TIMER2_IRQ)) { #ifndef EXCLUDE_SEQUENCER sound_timer_interrupt (); #else gus_write8 (0x45, 0); /* Stop timers */ #endif } if (src & (WAVETABLE_IRQ | ENVELOPE_IRQ)) { gus_voice_irq (); } } } #endif /* * Some extra code for the 16 bit sampling option */ #if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_GUS16) int probe_gus_db16 (struct address_info *hw_config) { return ad1848_detect (hw_config->io_base); } long attach_gus_db16 (long mem_start, struct address_info *hw_config) { gus_pcm_volume = 100; gus_wave_volume = 90; ad1848_init ("GUS 16 bit sampling", hw_config->io_base, hw_config->irq, hw_config->dma, hw_config->dma); return mem_start; } #endif |