sound/pci/au88x0/au88x0.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * ALSA driver for the Aureal Vortex family of soundprocessors.
   4  * Author: Manuel Jander (mjander@embedded.cl)
   5  *
   6  *   This driver is the result of the OpenVortex Project from Savannah
   7  * (savannah.nongnu.org/projects/openvortex). I would like to thank
   8  * the developers of OpenVortex, Jeff Muizelaar and Kester Maddock, from
   9  * whom i got plenty of help, and their codebase was invaluable.
  10  *   Thanks to the ALSA developers, they helped a lot working out
  11  * the ALSA part.
  12  *   Thanks also to Sourceforge for maintaining the old binary drivers,
  13  * and the forum, where developers could communicate.
  14  *
  15  * Now at least i can play Legacy DOOM with MIDI music :-)
  16  */
  17
  18 #include "au88x0.h"
  19 #include <linux/init.h>
  20 #include <linux/pci.h>
  21 #include <linux/slab.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/module.h>
  24 #include <linux/dma-mapping.h>
  25 #include <sound/initval.h>
  26
  27 // module parameters (see "Module Parameters")
  28 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  29 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  30 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  31 static int pcifix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 255 };
  32
  33 module_param_array(index, int, NULL, 0444);
  34 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  35 module_param_array(id, charp, NULL, 0444);
  36 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  37 module_param_array(enable, bool, NULL, 0444);
  38 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  39 module_param_array(pcifix, int, NULL, 0444);
  40 MODULE_PARM_DESC(pcifix, "Enable VIA-workaround for " CARD_NAME " soundcard.");
  41
  42 MODULE_DESCRIPTION("Aureal vortex");
  43 MODULE_LICENSE("GPL");
  44 MODULE_DEVICE_TABLE(pci, snd_vortex_ids);
  45
  46 static void vortex_fix_latency(struct pci_dev *vortex)
  47 {
  48         int rc;
  49         rc = pci_write_config_byte(vortex, 0x40, 0xff);
  50         if (!rc) {
  51                 dev_info(&vortex->dev, "vortex latency is 0xff\n");
  52         } else {
  53                 dev_warn(&vortex->dev,
  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         rc = pci_read_config_byte(via, 0x42, &value);
  70         if (!rc) {
  71                 if (!(value & 0x10))
  72                         rc = pci_write_config_byte(via, 0x42, value | 0x10);
  73         }
  74         if (!rc) {
  75                 dev_info(&via->dev, "bridge config is 0x%x\n", value | 0x10);
  76         } else {
  77                 dev_warn(&via->dev,
  78                          "could not set vortex latency: pci error 0x%x\n", rc);
  79         }
  80 }
  81
  82 static void snd_vortex_workaround(struct pci_dev *vortex, int fix)
  83 {
  84         struct pci_dev *via = NULL;
  85
  86         /* autodetect if workarounds are required */
  87         if (fix == 255) {
  88                 /* VIA KT133 */
  89                 via = pci_get_device(PCI_VENDOR_ID_VIA,
  90                         PCI_DEVICE_ID_VIA_8365_1, NULL);
  91                 /* VIA Apollo */
  92                 if (via == NULL) {
  93                         via = pci_get_device(PCI_VENDOR_ID_VIA,
  94                                 PCI_DEVICE_ID_VIA_82C598_1, NULL);
  95                         /* AMD Irongate */
  96                         if (via == NULL)
  97                                 via = pci_get_device(PCI_VENDOR_ID_AMD,
  98                                         PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
  99                 }
 100                 if (via) {
 101                         dev_info(&vortex->dev,
 102                                  "Activating latency workaround...\n");
 103                         vortex_fix_latency(vortex);
 104                         vortex_fix_agp_bridge(via);
 105                 }
 106         } else {
 107                 if (fix & 0x1)
 108                         vortex_fix_latency(vortex);
 109                 if (fix & 0x2)
 110                         via = pci_get_device(PCI_VENDOR_ID_VIA,
 111                                              PCI_DEVICE_ID_VIA_8365_1, NULL);
 112                 else if (fix & 0x4)
 113                         via = pci_get_device(PCI_VENDOR_ID_VIA,
 114                                              PCI_DEVICE_ID_VIA_82C598_1, NULL);
 115                 else if (fix & 0x8)
 116                         via = pci_get_device(PCI_VENDOR_ID_AMD,
 117                                              PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
 118                 if (via)
 119                         vortex_fix_agp_bridge(via);
 120         }
 121         pci_dev_put(via);
 122 }
 123
 124 // component-destructor
 125 // (see "Management of Cards and Components")
 126 static void snd_vortex_free(struct snd_card *card)
 127 {
 128         vortex_t *vortex = card->private_data;
 129
 130         vortex_gameport_unregister(vortex);
 131         vortex_core_shutdown(vortex);
 132 }
 133
 134 // chip-specific constructor
 135 // (see "Management of Cards and Components")
 136 static int
 137 snd_vortex_create(struct snd_card *card, struct pci_dev *pci)
 138 {
 139         vortex_t *chip = card->private_data;
 140         int err;
 141
 142         // check PCI availability (DMA).
 143         err = pcim_enable_device(pci);
 144         if (err < 0)
 145                 return err;
 146         if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
 147                 dev_err(card->dev, "error to set DMA mask\n");
 148                 return -ENXIO;
 149         }
 150
 151         chip->card = card;
 152
 153         // initialize the stuff
 154         chip->pci_dev = pci;
 155         chip->vendor = pci->vendor;
 156         chip->device = pci->device;
 157         chip->card = card;
 158         chip->irq = -1;
 159
 160         // (1) PCI resource allocation
 161         // Get MMIO area
 162         //
 163         err = pcim_iomap_regions(pci, 1 << 0, CARD_NAME_SHORT);
 164         if (err)
 165                 return err;
 166
 167         chip->io = pci_resource_start(pci, 0);
 168         chip->mmio = pcim_iomap_table(pci)[0];
 169
 170         /* Init audio core.
 171          * This must be done before we do request_irq otherwise we can get spurious
 172          * interrupts that we do not handle properly and make a mess of things */
 173         err = vortex_core_init(chip);
 174         if (err) {
 175                 dev_err(card->dev, "hw core init failed\n");
 176                 return err;
 177         }
 178
 179         err = devm_request_irq(&pci->dev, pci->irq, vortex_interrupt,
 180                                IRQF_SHARED, KBUILD_MODNAME, chip);
 181         if (err) {
 182                 dev_err(card->dev, "cannot grab irq\n");
 183                 return err;
 184         }
 185         chip->irq = pci->irq;
 186         card->sync_irq = chip->irq;
 187         card->private_free = snd_vortex_free;
 188
 189         pci_set_master(pci);
 190         // End of PCI setup.
 191         return 0;
 192 }
 193
 194 // constructor -- see "Constructor" sub-section
 195 static int
 196 __snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
 197 {
 198         static int dev;
 199         struct snd_card *card;
 200         vortex_t *chip;
 201         int err;
 202
 203         // (1)
 204         if (dev >= SNDRV_CARDS)
 205                 return -ENODEV;
 206         if (!enable[dev]) {
 207                 dev++;
 208                 return -ENOENT;
 209         }
 210         // (2)
 211         err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 212                                 sizeof(*chip), &card);
 213         if (err < 0)
 214                 return err;
 215         chip = card->private_data;
 216
 217         // (3)
 218         err = snd_vortex_create(card, pci);
 219         if (err < 0)
 220                 return err;
 221         snd_vortex_workaround(pci, pcifix[dev]);
 222
 223         // Card details needed in snd_vortex_midi
 224         strcpy(card->driver, CARD_NAME_SHORT);
 225         sprintf(card->shortname, "Aureal Vortex %s", CARD_NAME_SHORT);
 226         sprintf(card->longname, "%s at 0x%lx irq %i",
 227                 card->shortname, chip->io, chip->irq);
 228
 229         // (4) Alloc components.
 230         err = snd_vortex_mixer(chip);
 231         if (err < 0)
 232                 return err;
 233         // ADB pcm.
 234         err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM);
 235         if (err < 0)
 236                 return err;
 237 #ifndef CHIP_AU8820
 238         // ADB SPDIF
 239         err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1);
 240         if (err < 0)
 241                 return err;
 242         // A3D
 243         err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D);
 244         if (err < 0)
 245                 return err;
 246 #endif
 247         /*
 248            // ADB I2S
 249            if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
 250            return err;
 251            }
 252          */
 253 #ifndef CHIP_AU8810
 254         // WT pcm.
 255         err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT);
 256         if (err < 0)
 257                 return err;
 258 #endif
 259         err = snd_vortex_midi(chip);
 260         if (err < 0)
 261                 return err;
 262
 263         vortex_gameport_register(chip);
 264
 265 #if 0
 266         if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH,
 267                                sizeof(snd_vortex_synth_arg_t), &wave) < 0
 268             || wave == NULL) {
 269                 dev_err(card->dev, "Can't initialize Aureal wavetable synth\n");
 270         } else {
 271                 snd_vortex_synth_arg_t *arg;
 272
 273                 arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
 274                 strcpy(wave->name, "Aureal Synth");
 275                 arg->hwptr = vortex;
 276                 arg->index = 1;
 277                 arg->seq_ports = seq_ports[dev];
 278                 arg->max_voices = max_synth_voices[dev];
 279         }
 280 #endif
 281
 282         // (5)
 283         err = pci_read_config_word(pci, PCI_DEVICE_ID, &chip->device);
 284         if (err < 0)
 285                 return err;
 286         err = pci_read_config_word(pci, PCI_VENDOR_ID, &chip->vendor);
 287         if (err < 0)
 288                 return err;
 289         chip->rev = pci->revision;
 290 #ifdef CHIP_AU8830
 291         if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
 292                 dev_alert(card->dev,
 293                           "The revision (%x) of your card has not been seen before.\n",
 294                        chip->rev);
 295                 dev_alert(card->dev,
 296                           "Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
 297                 return -ENODEV;
 298         }
 299 #endif
 300
 301         // (6)
 302         err = snd_card_register(card);
 303         if (err < 0)
 304                 return err;
 305         // (7)
 306         pci_set_drvdata(pci, card);
 307         dev++;
 308         vortex_connect_default(chip, 1);
 309         vortex_enable_int(chip);
 310         return 0;
 311 }
 312
 313 static int
 314 snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
 315 {
 316         return snd_card_free_on_error(&pci->dev, __snd_vortex_probe(pci, pci_id));
 317 }
 318
 319 // pci_driver definition
 320 static struct pci_driver vortex_driver = {
 321         .name = KBUILD_MODNAME,
 322         .id_table = snd_vortex_ids,
 323         .probe = snd_vortex_probe,
 324 };
 325
 326 module_pci_driver(vortex_driver);