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Linux/sound/pci/au88x0/au88x0.c

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  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/module.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 bool 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                         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         if (!(rc = pci_read_config_byte(via, 0x42, &value))
 70                         && ((value & 0x10)
 71                                 || !(rc = pci_write_config_byte(via, 0x42, value | 0x10)))) {
 72                 dev_info(&via->dev, "bridge config is 0x%x\n", value | 0x10);
 73         } else {
 74                 dev_warn(&via->dev,
 75                          "could not set vortex latency: pci error 0x%x\n", rc);
 76         }
 77 }
 78 
 79 static void snd_vortex_workaround(struct pci_dev *vortex, int fix)
 80 {
 81         struct pci_dev *via = NULL;
 82 
 83         /* autodetect if workarounds are required */
 84         if (fix == 255) {
 85                 /* VIA KT133 */
 86                 via = pci_get_device(PCI_VENDOR_ID_VIA,
 87                         PCI_DEVICE_ID_VIA_8365_1, NULL);
 88                 /* VIA Apollo */
 89                 if (via == NULL) {
 90                         via = pci_get_device(PCI_VENDOR_ID_VIA,
 91                                 PCI_DEVICE_ID_VIA_82C598_1, NULL);
 92                         /* AMD Irongate */
 93                         if (via == NULL)
 94                                 via = pci_get_device(PCI_VENDOR_ID_AMD,
 95                                         PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
 96                 }
 97                 if (via) {
 98                         dev_info(&vortex->dev,
 99                                  "Activating latency workaround...\n");
100                         vortex_fix_latency(vortex);
101                         vortex_fix_agp_bridge(via);
102                 }
103         } else {
104                 if (fix & 0x1)
105                         vortex_fix_latency(vortex);
106                 if ((fix & 0x2) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
107                                 PCI_DEVICE_ID_VIA_8365_1, NULL)))
108                         vortex_fix_agp_bridge(via);
109                 if ((fix & 0x4) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
110                                 PCI_DEVICE_ID_VIA_82C598_1, NULL)))
111                         vortex_fix_agp_bridge(via);
112                 if ((fix & 0x8) && (via = pci_get_device(PCI_VENDOR_ID_AMD,
113                                 PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL)))
114                         vortex_fix_agp_bridge(via);
115         }
116         pci_dev_put(via);
117 }
118 
119 // component-destructor
120 // (see "Management of Cards and Components")
121 static int snd_vortex_dev_free(struct snd_device *device)
122 {
123         vortex_t *vortex = device->device_data;
124 
125         vortex_gameport_unregister(vortex);
126         vortex_core_shutdown(vortex);
127         // Take down PCI interface.
128         free_irq(vortex->irq, vortex);
129         iounmap(vortex->mmio);
130         pci_release_regions(vortex->pci_dev);
131         pci_disable_device(vortex->pci_dev);
132         kfree(vortex);
133 
134         return 0;
135 }
136 
137 // chip-specific constructor
138 // (see "Management of Cards and Components")
139 static int
140 snd_vortex_create(struct snd_card *card, struct pci_dev *pci, vortex_t ** rchip)
141 {
142         vortex_t *chip;
143         int err;
144         static struct snd_device_ops ops = {
145                 .dev_free = snd_vortex_dev_free,
146         };
147 
148         *rchip = NULL;
149 
150         // check PCI availability (DMA).
151         if ((err = pci_enable_device(pci)) < 0)
152                 return err;
153         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0 ||
154             dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
155                 dev_err(card->dev, "error to set DMA mask\n");
156                 pci_disable_device(pci);
157                 return -ENXIO;
158         }
159 
160         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
161         if (chip == NULL) {
162                 pci_disable_device(pci);
163                 return -ENOMEM;
164         }
165 
166         chip->card = card;
167 
168         // initialize the stuff
169         chip->pci_dev = pci;
170         chip->io = pci_resource_start(pci, 0);
171         chip->vendor = pci->vendor;
172         chip->device = pci->device;
173         chip->card = card;
174         chip->irq = -1;
175 
176         // (1) PCI resource allocation
177         // Get MMIO area
178         //
179         if ((err = pci_request_regions(pci, CARD_NAME_SHORT)) != 0)
180                 goto regions_out;
181 
182         chip->mmio = pci_ioremap_bar(pci, 0);
183         if (!chip->mmio) {
184                 dev_err(card->dev, "MMIO area remap failed.\n");
185                 err = -ENOMEM;
186                 goto ioremap_out;
187         }
188 
189         /* Init audio core.
190          * This must be done before we do request_irq otherwise we can get spurious
191          * interrupts that we do not handle properly and make a mess of things */
192         if ((err = vortex_core_init(chip)) != 0) {
193                 dev_err(card->dev, "hw core init failed\n");
194                 goto core_out;
195         }
196 
197         if ((err = request_irq(pci->irq, vortex_interrupt,
198                                IRQF_SHARED, KBUILD_MODNAME,
199                                chip)) != 0) {
200                 dev_err(card->dev, "cannot grab irq\n");
201                 goto irq_out;
202         }
203         chip->irq = pci->irq;
204 
205         pci_set_master(pci);
206         // End of PCI setup.
207 
208         // Register alsa root device.
209         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
210                 goto alloc_out;
211         }
212 
213         *rchip = chip;
214 
215         return 0;
216 
217       alloc_out:
218         free_irq(chip->irq, chip);
219       irq_out:
220         vortex_core_shutdown(chip);
221       core_out:
222         iounmap(chip->mmio);
223       ioremap_out:
224         pci_release_regions(chip->pci_dev);
225       regions_out:
226         pci_disable_device(chip->pci_dev);
227         //FIXME: this not the right place to unregister the gameport
228         vortex_gameport_unregister(chip);
229         kfree(chip);
230         return err;
231 }
232 
233 // constructor -- see "Constructor" sub-section
234 static int
235 snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
236 {
237         static int dev;
238         struct snd_card *card;
239         vortex_t *chip;
240         int err;
241 
242         // (1)
243         if (dev >= SNDRV_CARDS)
244                 return -ENODEV;
245         if (!enable[dev]) {
246                 dev++;
247                 return -ENOENT;
248         }
249         // (2)
250         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
251                            0, &card);
252         if (err < 0)
253                 return err;
254 
255         // (3)
256         if ((err = snd_vortex_create(card, pci, &chip)) < 0) {
257                 snd_card_free(card);
258                 return err;
259         }
260         snd_vortex_workaround(pci, pcifix[dev]);
261 
262         // Card details needed in snd_vortex_midi
263         strcpy(card->driver, CARD_NAME_SHORT);
264         sprintf(card->shortname, "Aureal Vortex %s", CARD_NAME_SHORT);
265         sprintf(card->longname, "%s at 0x%lx irq %i",
266                 card->shortname, chip->io, chip->irq);
267 
268         // (4) Alloc components.
269         err = snd_vortex_mixer(chip);
270         if (err < 0) {
271                 snd_card_free(card);
272                 return err;
273         }
274         // ADB pcm.
275         err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM);
276         if (err < 0) {
277                 snd_card_free(card);
278                 return err;
279         }
280 #ifndef CHIP_AU8820
281         // ADB SPDIF
282         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1)) < 0) {
283                 snd_card_free(card);
284                 return err;
285         }
286         // A3D
287         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D)) < 0) {
288                 snd_card_free(card);
289                 return err;
290         }
291 #endif
292         /*
293            // ADB I2S
294            if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
295            snd_card_free(card);
296            return err;
297            }
298          */
299 #ifndef CHIP_AU8810
300         // WT pcm.
301         if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT)) < 0) {
302                 snd_card_free(card);
303                 return err;
304         }
305 #endif
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 #if 0
314         if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH,
315                                sizeof(snd_vortex_synth_arg_t), &wave) < 0
316             || wave == NULL) {
317                 dev_err(card->dev, "Can't initialize Aureal wavetable synth\n");
318         } else {
319                 snd_vortex_synth_arg_t *arg;
320 
321                 arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
322                 strcpy(wave->name, "Aureal Synth");
323                 arg->hwptr = vortex;
324                 arg->index = 1;
325                 arg->seq_ports = seq_ports[dev];
326                 arg->max_voices = max_synth_voices[dev];
327         }
328 #endif
329 
330         // (5)
331         if ((err = pci_read_config_word(pci, PCI_DEVICE_ID,
332                                   &(chip->device))) < 0) {
333                 snd_card_free(card);
334                 return err;
335         }       
336         if ((err = pci_read_config_word(pci, PCI_VENDOR_ID,
337                                   &(chip->vendor))) < 0) {
338                 snd_card_free(card);
339                 return err;
340         }
341         chip->rev = pci->revision;
342 #ifdef CHIP_AU8830
343         if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
344                 dev_alert(card->dev,
345                           "The revision (%x) of your card has not been seen before.\n",
346                        chip->rev);
347                 dev_alert(card->dev,
348                           "Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
349                 snd_card_free(card);
350                 err = -ENODEV;
351                 return err;
352         }
353 #endif
354 
355         // (6)
356         if ((err = snd_card_register(card)) < 0) {
357                 snd_card_free(card);
358                 return err;
359         }
360         // (7)
361         pci_set_drvdata(pci, card);
362         dev++;
363         vortex_connect_default(chip, 1);
364         vortex_enable_int(chip);
365         return 0;
366 }
367 
368 // destructor -- see "Destructor" sub-section
369 static void snd_vortex_remove(struct pci_dev *pci)
370 {
371         snd_card_free(pci_get_drvdata(pci));
372 }
373 
374 // pci_driver definition
375 static struct pci_driver vortex_driver = {
376         .name = KBUILD_MODNAME,
377         .id_table = snd_vortex_ids,
378         .probe = snd_vortex_probe,
379         .remove = snd_vortex_remove,
380 };
381 
382 module_pci_driver(vortex_driver);
383 

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