Loading...
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 | /* * sound/gus_card.c * * Detection routine for the Gravis Ultrasound. * * Copyright (C) by Hannu Savolainen 1993-1997 * * * Frank van de Pol : Fixed GUS MAX interrupt handling, enabled simultanious * usage of CS4231A codec, GUS wave and MIDI for GUS MAX. * Christoph Hellwig: Adapted to module_init/module_exit, simple cleanups. * * Status: * Tested... */ #include <linux/config.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/module.h> #include "sound_config.h" #include "gus.h" #include "gus_hw.h" irqreturn_t gusintr(int irq, void *dev_id, struct pt_regs *dummy); int gus_base = 0, gus_irq = 0, gus_dma = 0; int gus_no_wave_dma = 0; extern int gus_wave_volume; extern int gus_pcm_volume; extern int have_gus_max; int gus_pnp_flag = 0; #ifdef CONFIG_SOUND_GUS16 static int db16; /* Has a Gus16 AD1848 on it */ #endif static void __init attach_gus(struct address_info *hw_config) { gus_wave_init(hw_config); if (sound_alloc_dma(hw_config->dma, "GUS")) printk(KERN_ERR "gus_card.c: Can't allocate DMA channel %d\n", hw_config->dma); if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma) if (sound_alloc_dma(hw_config->dma2, "GUS(2)")) printk(KERN_ERR "gus_card.c: Can't allocate DMA channel %d\n", hw_config->dma2); gus_midi_init(hw_config); if(request_irq(hw_config->irq, gusintr, 0, "Gravis Ultrasound", hw_config)<0) printk(KERN_ERR "gus_card.c: Unable to allocate IRQ %d\n", hw_config->irq); return; } static int __init probe_gus(struct address_info *hw_config) { int irq; int io_addr; if (hw_config->card_subtype == 1) gus_pnp_flag = 1; irq = hw_config->irq; if (hw_config->card_subtype == 0) /* GUS/MAX/ACE */ if (irq != 3 && irq != 5 && irq != 7 && irq != 9 && irq != 11 && irq != 12 && irq != 15) { printk(KERN_ERR "GUS: Unsupported IRQ %d\n", irq); return 0; } 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 */ continue; if (gus_wave_detect(io_addr)) { hw_config->io_base = io_addr; return 1; } } #endif printk("NO GUS card found !\n"); return 0; } static void __exit unload_gus(struct address_info *hw_config) { DDB(printk("unload_gus(%x)\n", hw_config->io_base)); gus_wave_unload(hw_config); release_region(hw_config->io_base, 16); release_region(hw_config->io_base + 0x100, 12); /* 0x10c-> is MAX */ free_irq(hw_config->irq, hw_config); sound_free_dma(hw_config->dma); if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma) sound_free_dma(hw_config->dma2); } irqreturn_t gusintr(int irq, void *dev_id, struct pt_regs *dummy) { unsigned char src; extern int gus_timer_enabled; int handled = 0; #ifdef CONFIG_SOUND_GUSMAX if (have_gus_max) { struct address_info *hw_config = dev_id; adintr(irq, (void *)hw_config->slots[1], NULL); } #endif #ifdef CONFIG_SOUND_GUS16 if (db16) { struct address_info *hw_config = dev_id; adintr(irq, (void *)hw_config->slots[3], NULL); } #endif while (1) { if (!(src = inb(u_IrqStatus))) break; handled = 1; if (src & DMA_TC_IRQ) { guswave_dma_irq(); } if (src & (MIDI_TX_IRQ | MIDI_RX_IRQ)) { gus_midi_interrupt(0); } if (src & (GF1_TIMER1_IRQ | GF1_TIMER2_IRQ)) { if (gus_timer_enabled) sound_timer_interrupt(); gus_write8(0x45, 0); /* Ack IRQ */ gus_timer_command(4, 0x80); /* Reset IRQ flags */ } if (src & (WAVETABLE_IRQ | ENVELOPE_IRQ)) gus_voice_irq(); } return IRQ_RETVAL(handled); } /* * Some extra code for the 16 bit sampling option */ #ifdef CONFIG_SOUND_GUS16 static int __init probe_gus_db16(struct address_info *hw_config) { return ad1848_detect(hw_config->io_base, NULL, hw_config->osp); } static void __init attach_gus_db16(struct address_info *hw_config) { gus_pcm_volume = 100; gus_wave_volume = 90; hw_config->slots[3] = ad1848_init("GUS 16 bit sampling", hw_config->io_base, hw_config->irq, hw_config->dma, hw_config->dma, 0, hw_config->osp, THIS_MODULE); } static void __exit unload_gus_db16(struct address_info *hw_config) { ad1848_unload(hw_config->io_base, hw_config->irq, hw_config->dma, hw_config->dma, 0); sound_unload_audiodev(hw_config->slots[3]); } #endif #ifdef CONFIG_SOUND_GUS16 static int gus16; #endif #ifdef CONFIG_SOUND_GUSMAX static int no_wave_dma; /* Set if no dma is to be used for the wave table (GF1 chip) */ #endif /* * Note DMA2 of -1 has the right meaning in the GUS driver as well * as here. */ static struct address_info cfg; static int __initdata io = -1; static int __initdata irq = -1; static int __initdata dma = -1; static int __initdata dma16 = -1; /* Set this for modules that need it */ static int __initdata type = 0; /* 1 for PnP */ MODULE_PARM(io, "i"); MODULE_PARM(irq, "i"); MODULE_PARM(dma, "i"); MODULE_PARM(dma16, "i"); MODULE_PARM(type, "i"); #ifdef CONFIG_SOUND_GUSMAX MODULE_PARM(no_wave_dma, "i"); #endif #ifdef CONFIG_SOUND_GUS16 MODULE_PARM(db16, "i"); MODULE_PARM(gus16, "i"); #endif MODULE_LICENSE("GPL"); static int __init init_gus(void) { printk(KERN_INFO "Gravis Ultrasound audio driver Copyright (C) by Hannu Savolainen 1993-1996\n"); cfg.io_base = io; cfg.irq = irq; cfg.dma = dma; cfg.dma2 = dma16; cfg.card_subtype = type; #ifdef CONFIG_SOUND_GUSMAX gus_no_wave_dma = no_wave_dma; #endif if (cfg.io_base == -1 || cfg.dma == -1 || cfg.irq == -1) { printk(KERN_ERR "I/O, IRQ, and DMA are mandatory\n"); return -EINVAL; } #ifdef CONFIG_SOUND_GUS16 if (probe_gus_db16(&cfg) && gus16) { /* FIXME: This can't work, can it ? -- Christoph */ attach_gus_db16(&cfg); db16 = 1; } #endif if (!probe_gus(&cfg)) return -ENODEV; attach_gus(&cfg); return 0; } static void __exit cleanup_gus(void) { #ifdef CONFIG_SOUND_GUS16 if (db16) unload_gus_db16(&cfg); #endif unload_gus(&cfg); } module_init(init_gus); module_exit(cleanup_gus); #ifndef MODULE static int __init setup_gus(char *str) { /* io, irq, dma, dma2 */ int ints[5]; str = get_options(str, ARRAY_SIZE(ints), ints); io = ints[1]; irq = ints[2]; dma = ints[3]; dma16 = ints[4]; return 1; } __setup("gus=", setup_gus); #endif |