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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 | /* * 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); int gus_base, gus_irq, gus_dma; long attach_gus_card (long mem_start, struct address_info *hw_config) { int io_addr; snd_set_irq_handler (hw_config->irq, gusintr); 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 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 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 unit) { unsigned char src; #ifdef linux sti(); #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)) { printk ("T"); gus_write8 (0x45, 0); /* Timer control */ } if (src & (WAVETABLE_IRQ | ENVELOPE_IRQ)) { gus_voice_irq (); } } } #endif |