release/src-rt-6.x.4708/linux/linux-2.6.36/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 <linux/dma-mapping.h>
  24 #include <sound/initval.h>
  25
  26 // module parameters (see "Module Parameters")
  27 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  28 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  29 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  30 static int pcifix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 255 };
  31
  32 module_param_array(index, int, NULL, 0444);
  33 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  34 module_param_array(id, charp, NULL, 0444);
  35 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  36 module_param_array(enable, bool, NULL, 0444);
  37 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  38 module_param_array(pcifix, int, NULL, 0444);
  39 MODULE_PARM_DESC(pcifix, "Enable VIA-workaround for " CARD_NAME " soundcard.");
  40
  41 MODULE_DESCRIPTION("Aureal vortex");
  42 MODULE_LICENSE("GPL");
  43 MODULE_SUPPORTED_DEVICE("{{Aureal Semiconductor Inc., Aureal Vortex Sound Processor}}");
  44
  45 MODULE_DEVICE_TABLE(pci, snd_vortex_ids);
  46
  47 static void vortex_fix_latency(struct pci_dev *vortex)
  48 {
  49         int rc;
  50         if (!(rc = pci_write_config_byte(vortex, 0x40, 0xff))) {
  51                         printk(KERN_INFO CARD_NAME
  52                                ": vortex latency is 0xff\n");
  53         } else {
  54                 printk(KERN_WARNING CARD_NAME
  55                                 ": could not set vortex latency: pci error 0x%x\n", rc);
  56         }
  57 }
  58
  59 static void vortex_fix_agp_bridge(struct pci_dev *via)
  60 {
  61         int rc;
  62         u8 value;
  63
  64         /*
  65          * only set the bit (Extend PCI#2 Internal Master for
  66          * Efficient Handling of Dummy Requests) if the can
  67          * read the config and it is not already set
  68          */
  69
  70         if (!(rc = pci_read_config_byte(via, 0x42, &value))
  71                         && ((value & 0x10)
  72                                 || !(rc = pci_write_config_byte(via, 0x42, value | 0x10)))) {
  73                 printk(KERN_INFO CARD_NAME
  74                                 ": bridge config is 0x%x\n", value | 0x10);
  75         } else {
  76                 printk(KERN_WARNING CARD_NAME
  77                                 ": could not set vortex latency: pci error 0x%x\n", rc);
  78         }
  79 }
  80
  81 static void __devinit snd_vortex_workaround(struct pci_dev *vortex, int fix)
  82 {
  83         struct pci_dev *via = NULL;
  84
  85         /* autodetect if workarounds are required */
  86         if (fix == 255) {
  87                 /* VIA KT133 */
  88                 via = pci_get_device(PCI_VENDOR_ID_VIA,
  89                         PCI_DEVICE_ID_VIA_8365_1, NULL);
  90                 /* VIA Apollo */
  91                 if (via == NULL) {
  92                         via = pci_get_device(PCI_VENDOR_ID_VIA,
  93                                 PCI_DEVICE_ID_VIA_82C598_1, NULL);
  94                         /* AMD Irongate */
  95                         if (via == NULL)
  96                                 via = pci_get_device(PCI_VENDOR_ID_AMD,
  97                                         PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
  98                 }
  99                 if (via) {
 100                         printk(KERN_INFO CARD_NAME ": Activating latency workaround...\n");
 101                         vortex_fix_latency(vortex);
 102                         vortex_fix_agp_bridge(via);
 103                 }
 104         } else {
 105                 if (fix & 0x1)
 106                         vortex_fix_latency(vortex);
 107                 if ((fix & 0x2) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
 108                                 PCI_DEVICE_ID_VIA_8365_1, NULL)))
 109                         vortex_fix_agp_bridge(via);
 110                 if ((fix & 0x4) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
 111                                 PCI_DEVICE_ID_VIA_82C598_1, NULL)))
 112                         vortex_fix_agp_bridge(via);
 113                 if ((fix & 0x8) && (via = pci_get_device(PCI_VENDOR_ID_AMD,
 114                                 PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL)))
 115                         vortex_fix_agp_bridge(via);
 116         }
 117         pci_dev_put(via);
 118 }
 119
 120 // component-destructor
 121 // (see "Management of Cards and Components")
 122 static int snd_vortex_dev_free(struct snd_device *device)
 123 {
 124         vortex_t *vortex = device->device_data;
 125
 126         vortex_gameport_unregister(vortex);
 127         vortex_core_shutdown(vortex);
 128         // Take down PCI interface.
 129         free_irq(vortex->irq, vortex);
 130         iounmap(vortex->mmio);
 131         pci_release_regions(vortex->pci_dev);
 132         pci_disable_device(vortex->pci_dev);
 133         kfree(vortex);
 134
 135         return 0;
 136 }
 137
 138 // chip-specific constructor
 139 // (see "Management of Cards and Components")
 140 static int __devinit
 141 snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
 142 {
 143         vortex_t *chip;
 144         int err;
 145         static struct snd_device_ops ops = {
 146                 .dev_free = snd_vortex_dev_free,
 147         };
 148
 149         *rchip = NULL;
 150
 151         // check PCI availability (DMA).
 152         if ((err = pci_enable_device(pci)) < 0)
 153                 return err;
 154         if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
 155             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
 156                 printk(KERN_ERR "error to set DMA mask\n");
 157                 pci_disable_device(pci);
 158                 return -ENXIO;
 159         }
 160
 161         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 162         if (chip == NULL) {
 163                 pci_disable_device(pci);
 164                 return -ENOMEM;
 165         }
 166
 167         chip->card = card;
 168
 169         // initialize the stuff
 170         chip->pci_dev = pci;
 171         chip->io = pci_resource_start(pci, 0);
 172         chip->vendor = pci->vendor;
 173         chip->device = pci->device;
 174         chip->card = card;
 175         chip->irq = -1;
 176
 177         // (1) PCI resource allocation
 178         // Get MMIO area
 179         //
 180         if ((err = pci_request_regions(pci, CARD_NAME_SHORT)) != 0)
 181                 goto regions_out;
 182
 183         chip->mmio = pci_ioremap_bar(pci, 0);
 184         if (!chip->mmio) {
 185                 printk(KERN_ERR "MMIO area remap failed.\n");
 186                 err = -ENOMEM;
 187                 goto ioremap_out;
 188         }
 189
 190         /* Init audio core.
 191          * This must be done before we do request_irq otherwise we can get spurious
 192          * interrupts that we do not handle properly and make a mess of things */
 193         if ((err = vortex_core_init(chip)) != 0) {
 194                 printk(KERN_ERR "hw core init failed\n");
 195                 goto core_out;
 196         }
 197
 198         if ((err = request_irq(pci->irq, vortex_interrupt,
 199                                IRQF_SHARED, CARD_NAME_SHORT,
 200                                chip)) != 0) {
 201                 printk(KERN_ERR "cannot grab irq\n");
 202                 goto irq_out;
 203         }
 204         chip->irq = pci->irq;
 205
 206         pci_set_master(pci);
 207         // End of PCI setup.
 208
 209         // Register alsa root device.
 210         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 211                 goto alloc_out;
 212         }
 213
 214         snd_card_set_dev(card, &pci->dev);
 215
 216         *rchip = chip;
 217
 218         return 0;
 219
 220       alloc_out:
 221         free_irq(chip->irq, chip);
 222       irq_out:
 223         vortex_core_shutdown(chip);
 224       core_out:
 225         iounmap(chip->mmio);
 226       ioremap_out:
 227         pci_release_regions(chip->pci_dev);
 228       regions_out:
 229         pci_disable_device(chip->pci_dev);
 230         vortex_gameport_unregister(chip);
 231         kfree(chip);
 232         return err;
 233 }
 234
 235 // constructor -- see "Constructor" sub-section
 236 static int __devinit
 237 snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
 238 {
 239         static int dev;
 240         struct snd_card *card;
 241         vortex_t *chip;
 242         int err;
 243
 244         // (1)
 245         if (dev >= SNDRV_CARDS)
 246                 return -ENODEV;
 247         if (!enable[dev]) {
 248                 dev++;
 249                 return -ENOENT;
 250         }
 251         // (2)
 252         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
 253         if (err < 0)
 254                 return err;
 255
 256         // (3)
 257         if ((err = snd_vortex_create(card, pci, &chip)) < 0) {
 258                 snd_card_free(card);
 259                 return err;
 260         }
 261         snd_vortex_workaround(pci, pcifix[dev]);
 262
 263         // Card details needed in snd_vortex_midi
 264         strcpy(card->driver, CARD_NAME_SHORT);
 265         sprintf(card->shortname, "Aureal Vortex %s", CARD_NAME_SHORT);
 266         sprintf(card->longname, "%s at 0x%lx irq %i",
 267                 card->shortname, chip->io, chip->irq);
 268
 269         // (4) Alloc components.
 270         // ADB pcm.
 271         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_ADB)) < 0) {
 272                 snd_card_free(card);
 273                 return err;
 274         }
 275 #ifndef CHIP_AU8820
 276         // ADB SPDIF
 277         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1)) < 0) {
 278                 snd_card_free(card);
 279                 return err;
 280         }
 281         // A3D
 282         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D)) < 0) {
 283                 snd_card_free(card);
 284                 return err;
 285         }
 286 #endif
 287         /*
 288            // ADB I2S
 289            if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
 290            snd_card_free(card);
 291            return err;
 292            }
 293          */
 294 #ifndef CHIP_AU8810
 295         // WT pcm.
 296         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT)) < 0) {
 297                 snd_card_free(card);
 298                 return err;
 299         }
 300 #endif
 301         // snd_ac97_mixer and Vortex mixer.
 302         if ((err = snd_vortex_mixer(chip)) < 0) {
 303                 snd_card_free(card);
 304                 return err;
 305         }
 306         if ((err = snd_vortex_midi(chip)) < 0) {
 307                 snd_card_free(card);
 308                 return err;
 309         }
 310
 311         vortex_gameport_register(chip);
 312
 313
 314         // (5)
 315         if ((err = pci_read_config_word(pci, PCI_DEVICE_ID,
 316                                   &(chip->device))) < 0) {
 317                 snd_card_free(card);
 318                 return err;
 319         }
 320         if ((err = pci_read_config_word(pci, PCI_VENDOR_ID,
 321                                   &(chip->vendor))) < 0) {
 322                 snd_card_free(card);
 323                 return err;
 324         }
 325         chip->rev = pci->revision;
 326 #ifdef CHIP_AU8830
 327         if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
 328                 printk(KERN_ALERT
 329                        "vortex: The revision (%x) of your card has not been seen before.\n",
 330                        chip->rev);
 331                 printk(KERN_ALERT
 332                        "vortex: Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
 333                 snd_card_free(card);
 334                 err = -ENODEV;
 335                 return err;
 336         }
 337 #endif
 338
 339         // (6)
 340         if ((err = snd_card_register(card)) < 0) {
 341                 snd_card_free(card);
 342                 return err;
 343         }
 344         // (7)
 345         pci_set_drvdata(pci, card);
 346         dev++;
 347         vortex_connect_default(chip, 1);
 348         vortex_enable_int(chip);
 349         return 0;
 350 }
 351
 352 // destructor -- see "Destructor" sub-section
 353 static void __devexit snd_vortex_remove(struct pci_dev *pci)
 354 {
 355         snd_card_free(pci_get_drvdata(pci));
 356         pci_set_drvdata(pci, NULL);
 357 }
 358
 359 // pci_driver definition
 360 static struct pci_driver driver = {
 361         .name = CARD_NAME_SHORT,
 362         .id_table = snd_vortex_ids,
 363         .probe = snd_vortex_probe,
 364         .remove = __devexit_p(snd_vortex_remove),
 365 };
 366
 367 // initialization of the module
 368 static int __init alsa_card_vortex_init(void)
 369 {
 370         return pci_register_driver(&driver);
 371 }
 372
 373 // clean up the module
 374 static void __exit alsa_card_vortex_exit(void)
 375 {
 376         pci_unregister_driver(&driver);
 377 }
 378
 379 module_init(alsa_card_vortex_init)
 380 module_exit(alsa_card_vortex_exit)