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 comunicate. 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 // pci_driver definition 314 static struct pci_driver vortex_driver = { 315 .name = KBUILD_MODNAME, 316 .id_table = snd_vortex_ids, 317 .probe = snd_vortex_probe, 318 }; 319 320 module_pci_driver(vortex_driver); 321