aboutsummaryrefslogtreecommitdiff
path: root/sound/pci/au88x0/au88x0.c
blob: 0e33e0650cf5ea4850653e329ef0ca0bd2b604fa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
/*
 * ALSA driver for the Aureal Vortex family of soundprocessors.
 * Author: Manuel Jander (mjander@embedded.cl)
 *
 *   This driver is the result of the OpenVortex Project from Savannah
 * (savannah.nongnu.org/projects/openvortex). I would like to thank
 * the developers of OpenVortex, Jeff Muizelaar and Kester Maddock, from
 * whom i got plenty of help, and their codebase was invaluable.
 *   Thanks to the ALSA developers, they helped a lot working out
 * the ALSA part.
 *   Thanks also to Sourceforge for maintaining the old binary drivers,
 * and the forum, where developers could comunicate.
 *
 * Now at least i can play Legacy DOOM with MIDI music :-)
 */

#include "au88x0.h"
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <sound/initval.h>

// module parameters (see "Module Parameters")
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
static int pcifix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 255 };

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
module_param_array(pcifix, int, NULL, 0444);
MODULE_PARM_DESC(pcifix, "Enable VIA-workaround for " CARD_NAME " soundcard.");

MODULE_DESCRIPTION("Aureal vortex");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Aureal Semiconductor Inc., Aureal Vortex Sound Processor}}");

MODULE_DEVICE_TABLE(pci, snd_vortex_ids);

static void vortex_fix_latency(struct pci_dev *vortex)
{
	int rc;
	if (!(rc = pci_write_config_byte(vortex, 0x40, 0xff))) {
			printk(KERN_INFO CARD_NAME
			       ": vortex latency is 0xff\n");
	} else {
		printk(KERN_WARNING CARD_NAME
				": could not set vortex latency: pci error 0x%x\n", rc);
	}
}

static void vortex_fix_agp_bridge(struct pci_dev *via)
{
	int rc;
	u8 value;

	/*
	 * only set the bit (Extend PCI#2 Internal Master for
	 * Efficient Handling of Dummy Requests) if the can
	 * read the config and it is not already set
	 */

	if (!(rc = pci_read_config_byte(via, 0x42, &value))
			&& ((value & 0x10)
				|| !(rc = pci_write_config_byte(via, 0x42, value | 0x10)))) {
		printk(KERN_INFO CARD_NAME
				": bridge config is 0x%x\n", value | 0x10);
	} else {
		printk(KERN_WARNING CARD_NAME
				": could not set vortex latency: pci error 0x%x\n", rc);
	}
}

static void __devinit snd_vortex_workaround(struct pci_dev *vortex, int fix)
{
	struct pci_dev *via = NULL;

	/* autodetect if workarounds are required */
	if (fix == 255) {
		/* VIA KT133 */
		via = pci_get_device(PCI_VENDOR_ID_VIA,
			PCI_DEVICE_ID_VIA_8365_1, NULL);
		/* VIA Apollo */
		if (via == NULL) {
			via = pci_get_device(PCI_VENDOR_ID_VIA,
				PCI_DEVICE_ID_VIA_82C598_1, NULL);
			/* AMD Irongate */
			if (via == NULL)
				via = pci_get_device(PCI_VENDOR_ID_AMD,
					PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL);
		}
		if (via) {
			printk(KERN_INFO CARD_NAME ": Activating latency workaround...\n");
			vortex_fix_latency(vortex);
			vortex_fix_agp_bridge(via);
		}
	} else {
		if (fix & 0x1)
			vortex_fix_latency(vortex);
		if ((fix & 0x2) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
				PCI_DEVICE_ID_VIA_8365_1, NULL)))
			vortex_fix_agp_bridge(via);
		if ((fix & 0x4) && (via = pci_get_device(PCI_VENDOR_ID_VIA,
				PCI_DEVICE_ID_VIA_82C598_1, NULL)))
			vortex_fix_agp_bridge(via);
		if ((fix & 0x8) && (via = pci_get_device(PCI_VENDOR_ID_AMD,
				PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL)))
			vortex_fix_agp_bridge(via);
	}
	pci_dev_put(via);
}

// component-destructor
// (see "Management of Cards and Components")
static int snd_vortex_dev_free(snd_device_t * device)
{
	vortex_t *vortex = device->device_data;

	vortex_gameport_unregister(vortex);
	vortex_core_shutdown(vortex);
	// Take down PCI interface.
	synchronize_irq(vortex->irq);
	free_irq(vortex->irq, vortex);
	pci_release_regions(vortex->pci_dev);
	pci_disable_device(vortex->pci_dev);
	kfree(vortex);

	return 0;
}

// chip-specific constructor
// (see "Management of Cards and Components")
static int __devinit
snd_vortex_create(snd_card_t * card, struct pci_dev *pci, vortex_t ** rchip)
{
	vortex_t *chip;
	int err;
	static snd_device_ops_t ops = {
		.dev_free = snd_vortex_dev_free,
	};

	*rchip = NULL;

	// check PCI availability (DMA).
	if ((err = pci_enable_device(pci)) < 0)
		return err;
	if (!pci_dma_supported(pci, VORTEX_DMA_MASK)) {
		printk(KERN_ERR "error to set DMA mask\n");
		return -ENXIO;
	}
	pci_set_dma_mask(pci, VORTEX_DMA_MASK);

	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
	if (chip == NULL)
		return -ENOMEM;

	chip->card = card;

	// initialize the stuff
	chip->pci_dev = pci;
	chip->io = pci_resource_start(pci, 0);
	chip->vendor = pci->vendor;
	chip->device = pci->device;
	chip->card = card;
	chip->irq = -1;

	// (1) PCI resource allocation
	// Get MMIO area
	//
	if ((err = pci_request_regions(pci, CARD_NAME_SHORT)) != 0)
		goto regions_out;

	chip->mmio = ioremap_nocache(pci_resource_start(pci, 0),
	                             pci_resource_len(pci, 0));
	if (!chip->mmio) {
		printk(KERN_ERR "MMIO area remap failed.\n");
		err = -ENOMEM;
		goto ioremap_out;
	}

	/* Init audio core.
	 * This must be done before we do request_irq otherwise we can get spurious
	 * interupts that we do not handle properly and make a mess of things */
	if ((err = vortex_core_init(chip)) != 0) {
		printk(KERN_ERR "hw core init failed\n");
		goto core_out;
	}

	if ((err = request_irq(pci->irq, vortex_interrupt,
	                       SA_INTERRUPT | SA_SHIRQ, CARD_NAME_SHORT,
	                       chip)) != 0) {
		printk(KERN_ERR "cannot grab irq\n");
		goto irq_out;
	}
	chip->irq = pci->irq;

	pci_set_master(pci);
	// End of PCI setup.

	// Register alsa root device.
	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		goto alloc_out;
	}

	*rchip = chip;

	return 0;

      alloc_out:
	synchronize_irq(chip->irq);
	free_irq(chip->irq, chip);
      irq_out:
	vortex_core_shutdown(chip);
      core_out:
	iounmap(chip->mmio);
      ioremap_out:
	pci_release_regions(chip->pci_dev);
      regions_out:
	pci_disable_device(chip->pci_dev);
	//FIXME: this not the right place to unregister the gameport
	vortex_gameport_unregister(chip);
	return err;
}

// constructor -- see "Constructor" sub-section
static int __devinit
snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
{
	static int dev;
	snd_card_t *card;
	vortex_t *chip;
	int err;

	// (1)
	if (dev >= SNDRV_CARDS)
		return -ENODEV;
	if (!enable[dev]) {
		dev++;
		return -ENOENT;
	}
	// (2)
	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
		return -ENOMEM;

	// (3)
	if ((err = snd_vortex_create(card, pci, &chip)) < 0) {
		snd_card_free(card);
		return err;
	}
	snd_vortex_workaround(pci, pcifix[dev]);
	// (4) Alloc components.
	// ADB pcm.
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_ADB)) < 0) {
		snd_card_free(card);
		return err;
	}
#ifndef CHIP_AU8820
	// ADB SPDIF
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1)) < 0) {
		snd_card_free(card);
		return err;
	}
	// A3D
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D)) < 0) {
		snd_card_free(card);
		return err;
	}
#endif
	/*
	   // ADB I2S
	   if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
	   snd_card_free(card);
	   return err;
	   }
	 */
#ifndef CHIP_AU8810
	// WT pcm.
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT)) < 0) {
		snd_card_free(card);
		return err;
	}
#endif
	// snd_ac97_mixer and Vortex mixer.
	if ((err = snd_vortex_mixer(chip)) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = snd_vortex_midi(chip)) < 0) {
		snd_card_free(card);
		return err;
	}

	vortex_gameport_register(chip);

#if 0
	if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH,
			       sizeof(snd_vortex_synth_arg_t), &wave) < 0
	    || wave == NULL) {
		snd_printk("Can't initialize Aureal wavetable synth\n");
	} else {
		snd_vortex_synth_arg_t *arg;

		arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
		strcpy(wave->name, "Aureal Synth");
		arg->hwptr = vortex;
		arg->index = 1;
		arg->seq_ports = seq_ports[dev];
		arg->max_voices = max_synth_voices[dev];
	}
#endif

	// (5)
	strcpy(card->driver, CARD_NAME_SHORT);
	strcpy(card->shortname, CARD_NAME_SHORT);
	sprintf(card->longname, "%s at 0x%lx irq %i",
		card->shortname, chip->io, chip->irq);

	if ((err = pci_read_config_word(pci, PCI_DEVICE_ID,
				  &(chip->device))) < 0) {
		snd_card_free(card);
		return err;
	}	
	if ((err = pci_read_config_word(pci, PCI_VENDOR_ID,
				  &(chip->vendor))) < 0) {
		snd_card_free(card);
		return err;
	}
	if ((err = pci_read_config_byte(pci, PCI_REVISION_ID,
				  &(chip->rev))) < 0) {
		snd_card_free(card);
		return err;
	}
#ifdef CHIP_AU8830
	if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
		printk(KERN_ALERT
		       "vortex: The revision (%x) of your card has not been seen before.\n",
		       chip->rev);
		printk(KERN_ALERT
		       "vortex: Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n");
		snd_card_free(card);
		err = -ENODEV;
		return err;
	}
#endif

	// (6)
	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	// (7)
	pci_set_drvdata(pci, card);
	dev++;
	vortex_connect_default(chip, 1);
	vortex_enable_int(chip);
	return 0;
}

// destructor -- see "Destructor" sub-section
static void __devexit snd_vortex_remove(struct pci_dev *pci)
{
	snd_card_free(pci_get_drvdata(pci));
	pci_set_drvdata(pci, NULL);
}

// pci_driver definition
static struct pci_driver driver = {
	.name = CARD_NAME_SHORT,
	.id_table = snd_vortex_ids,
	.probe = snd_vortex_probe,
	.remove = __devexit_p(snd_vortex_remove),
};

// initialization of the module
static int __init alsa_card_vortex_init(void)
{
	return pci_register_driver(&driver);
}

// clean up the module
static void __exit alsa_card_vortex_exit(void)
{
	pci_unregister_driver(&driver);
}

module_init(alsa_card_vortex_init)
module_exit(alsa_card_vortex_exit)