sound/pci/au88x0/au88x0.c

   1 /*
   2  * ALSA driver for the Aureal Vortex family of soundprocessors.
   3  * Author: Manuel Jander (mjander@embedded.cl)
   4  *
   5  *   This driver is the result of the OpenVortex Project from Savannah
   6  * (savannah.nongnu.org/projects/openvortex). I would like to thank
   7  * the developers of OpenVortex, Jeff Muizelaar and Kester Maddock, from
   8  * whom i got plenty of help, and their codebase was invaluable.
   9  *   Thanks to the ALSA developers, they helped a lot working out
  10  * the ALSA part.
  11  *   Thanks also to Sourceforge for maintaining the old binary drivers,
  12  * and the forum, where developers could comunicate.
  13  *
  14  * Now at least i can play Legacy DOOM with MIDI music :-)
  15  */
  16
  17 #include "au88x0.h"
  18 #include <linux/init.h>
  19 #include <linux/pci.h>
  20 #include <linux/slab.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/moduleparam.h>
  23 #include <sound/initval.h>
  24
  25 // module parameters (see "Module Parameters")
  26 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  27 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  28 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  29 static int pcifix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 255 };
  30
  31 module_param_array(index, int, NULL, 0444);
  32 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  33 module_param_array(id, charp, NULL, 0444);
  34 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  35 module_param_array(enable, bool, NULL, 0444);
  36 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  37 module_param_array(pcifix, int, NULL, 0444);
  38 MODULE_PARM_DESC(pcifix, "Enable VIA-workaround for " CARD_NAME " soundcard.");
  39
  40 MODULE_DESCRIPTION("Aureal vortex");
  41 MODULE_LICENSE("GPL");
  42 MODULE_SUPPORTED_DEVICE("{{Aureal Semiconductor Inc., Aureal Vortex Sound Processor}}");
  43
  44 MODULE_DEVICE_TABLE(pci, snd_vortex_ids);
  45
  46 static void vortex_fix_latency(struct pci_dev *vortex)
  47 {
  48         int rc;
  49         if (!(rc = pci_write_config_byte(vortex, 0x40, 0xff))) {
  50                         printk(KERN_INFO CARD_NAME
  51                                ": vortex latency is 0xff\n");
  52         } else {
  53                 printk(KERN_WARNING CARD_NAME
  54                                 ": could not set vortex latency: pci error 0x%x\n", rc);
  55         }
  56 }
  57
  58 static void vortex_fix_agp_bridge(struct pci_dev *via)
  59 {
  60         int rc;
  61         u8 value;
  62
  63         /*
  64          * only set the bit (Extend PCI#2 Internal Master for
  65          * Efficient Handling of Dummy Requests) if the can
  66          * read the config and it is not already set
  67          */
  68
  69         if (!(rc = pci_read_config_byte(via, 0x42, &value))
  70                         && ((value & 0x10)
  71                                 || !(rc = pci_write_config_byte(via, 0x42, value | 0x10)))) {
  72                 printk(KERN_INFO CARD_NAME
  73                                 ": bridge config is 0x%x\n", value | 0x10);
  74         } else {
  75                 printk(KERN_WARNING CARD_NAME
  76                                 ": could not set vortex latency: pci error 0x%x\n", rc);
  77         }
  78 }
  79
  80 static void __devinit snd_vortex_workaround(struct pci_dev *vortex, int fix)
  81 {
  82         struct pci_dev *via;
  83
  84         /* autodetect if workarounds are required */
  85         if (fix == 255) {
  86                 /* VIA KT133 */
  87                 via = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8365_1, NULL);
  88                 /* VIA Apollo */
  89                 if (via == NULL) {
  90                         via = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C598_1, NULL);
  91                 }
  92                 /* AMD Irongate */
  93                 if (via == NULL) {
  94                         via = pci_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
  95                 }
  96                 if (via) {
  97                         printk(KERN_INFO CARD_NAME ": Activating latency workaround...\n");
  98                         vortex_fix_latency(vortex);
  99                         vortex_fix_agp_bridge(via);
 100                 }
 101         } else {
 102                 if (fix & 0x1)
 103                         vortex_fix_latency(vortex);
 104                 if ((fix & 0x2) && (via = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8365_1, NULL)))
 105                         vortex_fix_agp_bridge(via);
 106                 if ((fix & 0x4) && (via = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C598_1, NULL)))
 107                         vortex_fix_agp_bridge(via);
 108                 if ((fix & 0x8) && (via = pci_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL)))
 109                         vortex_fix_agp_bridge(via);
 110         }
 111 }
 112
 113 // component-destructor
 114 // (see "Management of Cards and Components")
 115 static int snd_vortex_dev_free(snd_device_t * device)
 116 {
 117         vortex_t *vortex = device->device_data;
 118
 119         vortex_gameport_unregister(vortex);
 120         vortex_core_shutdown(vortex);
 121         // Take down PCI interface.
 122         synchronize_irq(vortex->irq);
 123         free_irq(vortex->irq, vortex);
 124         pci_release_regions(vortex->pci_dev);
 125         pci_disable_device(vortex->pci_dev);
 126         kfree(vortex);
 127
 128         return 0;
 129 }
 130
 131 // chip-specific constructor
 132 // (see "Management of Cards and Components")
 133 static int __devinit
 134 snd_vortex_create(snd_card_t * card, struct pci_dev *pci, vortex_t ** rchip)
 135 {
 136         vortex_t *chip;
 137         int err;
 138         static snd_device_ops_t ops = {
 139                 .dev_free = snd_vortex_dev_free,
 140         };
 141
 142         *rchip = NULL;
 143
 144         // check PCI availability (DMA).
 145         if ((err = pci_enable_device(pci)) < 0)
 146                 return err;
 147         if (!pci_dma_supported(pci, VORTEX_DMA_MASK)) {
 148                 printk(KERN_ERR "error to set DMA mask\n");
 149                 return -ENXIO;
 150         }
 151         pci_set_dma_mask(pci, VORTEX_DMA_MASK);
 152
 153         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
 154         if (chip == NULL)
 155                 return -ENOMEM;
 156
 157         chip->card = card;
 158
 159         // initialize the stuff
 160         chip->pci_dev = pci;
 161         chip->io = pci_resource_start(pci, 0);
 162         chip->vendor = pci->vendor;
 163         chip->device = pci->device;
 164         chip->card = card;
 165         chip->irq = -1;
 166
 167         // (1) PCI resource allocation
 168         // Get MMIO area
 169         //
 170         if ((err = pci_request_regions(pci, CARD_NAME_SHORT)) != 0)
 171                 goto regions_out;
 172
 173         chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
 174                                      pci_resource_len(pci, 0));
 175         if (!chip->mmio) {
 176                 printk(KERN_ERR "MMIO area remap failed.\n");
 177                 err = -ENOMEM;
 178                 goto ioremap_out;
 179         }
 180
 181         /* Init audio core.
 182          * This must be done before we do request_irq otherwise we can get spurious
 183          * interupts that we do not handle properly and make a mess of things */
 184         if ((err = vortex_core_init(chip)) != 0) {
 185                 printk(KERN_ERR "hw core init failed\n");
 186                 goto core_out;
 187         }
 188
 189         if ((err = request_irq(pci->irq, vortex_interrupt,
 190                                SA_INTERRUPT | SA_SHIRQ, CARD_NAME_SHORT,
 191                                chip)) != 0) {
 192                 printk(KERN_ERR "cannot grab irq\n");
 193                 goto irq_out;
 194         }
 195         chip->irq = pci->irq;
 196
 197         pci_set_master(pci);
 198         // End of PCI setup.
 199
 200         // Register alsa root device.
 201         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 202                 goto alloc_out;
 203         }
 204
 205         *rchip = chip;
 206
 207         return 0;
 208
 209       alloc_out:
 210         synchronize_irq(chip->irq);
 211         free_irq(chip->irq, chip);
 212       irq_out:
 213         vortex_core_shutdown(chip);
 214       core_out:
 215         iounmap(chip->mmio);
 216       ioremap_out:
 217         pci_release_regions(chip->pci_dev);
 218       regions_out:
 219         pci_disable_device(chip->pci_dev);
 220         //FIXME: this not the right place to unregister the gameport
 221         vortex_gameport_unregister(chip);
 222         return err;
 223 }
 224
 225 // constructor -- see "Constructor" sub-section
 226 static int __devinit
 227 snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
 228 {
 229         static int dev;
 230         snd_card_t *card;
 231         vortex_t *chip;
 232         int err;
 233
 234         // (1)
 235         if (dev >= SNDRV_CARDS)
 236                 return -ENODEV;
 237         if (!enable[dev]) {
 238                 dev++;
 239                 return -ENOENT;
 240         }
 241         // (2)
 242         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 243         if (card == NULL)
 244                 return -ENOMEM;
 245
 246         // (3)
 247         if ((err = snd_vortex_create(card, pci, &chip)) < 0) {
 248                 snd_card_free(card);
 249                 return err;
 250         }
 251         snd_vortex_workaround(pci, pcifix[dev]);
 252         // (4) Alloc components.
 253         // ADB pcm.
 254         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_ADB)) < 0) {
 255                 snd_card_free(card);
 256                 return err;
 257         }
 258 #ifndef CHIP_AU8820
 259         // ADB SPDIF
 260         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1)) < 0) {
 261                 snd_card_free(card);
 262                 return err;
 263         }
 264         // A3D
 265         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D)) < 0) {
 266                 snd_card_free(card);
 267                 return err;
 268         }
 269 #endif
 270         /*
 271            // ADB I2S
 272            if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
 273            snd_card_free(card);
 274            return err;
 275            }
 276          */
 277 #ifndef CHIP_AU8810
 278         // WT pcm.
 279         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT)) < 0) {
 280                 snd_card_free(card);
 281                 return err;
 282         }
 283 #endif
 284         // snd_ac97_mixer and Vortex mixer.
 285         if ((err = snd_vortex_mixer(chip)) < 0) {
 286                 snd_card_free(card);
 287                 return err;
 288         }
 289         if ((err = snd_vortex_midi(chip)) < 0) {
 290                 snd_card_free(card);
 291                 return err;
 292         }
 293
 294         vortex_gameport_register(chip);
 295
 296 #if 0
 297         if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH,
 298                                sizeof(snd_vortex_synth_arg_t), &wave) < 0
 299             || wave == NULL) {
 300                 snd_printk("Can't initialize Aureal wavetable synth\n");
 301         } else {
 302                 snd_vortex_synth_arg_t *arg;
 303
 304                 arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
 305                 strcpy(wave->name, "Aureal Synth");
 306                 arg->hwptr = vortex;
 307                 arg->index = 1;
 308                 arg->seq_ports = seq_ports[dev];
 309                 arg->max_voices = max_synth_voices[dev];
 310         }
 311 #endif
 312
 313         // (5)
 314         strcpy(card->driver, CARD_NAME_SHORT);
 315         strcpy(card->shortname, CARD_NAME_SHORT);
 316         sprintf(card->longname, "%s at 0x%lx irq %i",
 317                 card->shortname, chip->io, chip->irq);
 318
 319         if ((err = pci_read_config_word(pci, PCI_DEVICE_ID,
 320                                   &(chip->device))) < 0) {
 321                 snd_card_free(card);
 322                 return err;
 323         }
 324         if ((err = pci_read_config_word(pci, PCI_VENDOR_ID,
 325                                   &(chip->vendor))) < 0) {
 326                 snd_card_free(card);
 327                 return err;
 328         }
 329         if ((err = pci_read_config_byte(pci, PCI_REVISION_ID,
 330                                   &(chip->rev))) < 0) {
 331                 snd_card_free(card);
 332                 return err;
 333         }
 334 #ifdef CHIP_AU8830
 335         if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
 336                 printk(KERN_ALERT
 337                        "vortex: The revision (%x) of your card has not been seen before.\n",
 338                        chip->rev);
 339                 printk(KERN_ALERT
 340                        "vortex: Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
 341                 snd_card_free(card);
 342                 err = -ENODEV;
 343                 return err;
 344         }
 345 #endif
 346
 347         // (6)
 348         if ((err = snd_card_register(card)) < 0) {
 349                 snd_card_free(card);
 350                 return err;
 351         }
 352         // (7)
 353         pci_set_drvdata(pci, card);
 354         dev++;
 355         vortex_connect_default(chip, 1);
 356         vortex_enable_int(chip);
 357         return 0;
 358 }
 359
 360 // destructor -- see "Destructor" sub-section
 361 static void __devexit snd_vortex_remove(struct pci_dev *pci)
 362 {
 363         snd_card_free(pci_get_drvdata(pci));
 364         pci_set_drvdata(pci, NULL);
 365 }
 366
 367 // pci_driver definition
 368 static struct pci_driver driver = {
 369         .name = CARD_NAME_SHORT,
 370         .id_table = snd_vortex_ids,
 371         .probe = snd_vortex_probe,
 372         .remove = __devexit_p(snd_vortex_remove),
 373 };
 374
 375 // initialization of the module
 376 static int __init alsa_card_vortex_init(void)
 377 {
 378         return pci_module_init(&driver);
 379 }
 380
 381 // clean up the module
 382 static void __exit alsa_card_vortex_exit(void)
 383 {
 384         pci_unregister_driver(&driver);
 385 }
 386
 387 module_init(alsa_card_vortex_init)
 388 module_exit(alsa_card_vortex_exit)