Avoid beyond bounds copy while caching ACL
[zen-stable.git] / sound / isa / sb / jazz16.c
blob410758c68090397d2747af150f5b2f8cbc07c9e2
2 /*
3 * jazz16.c - driver for Media Vision Jazz16 based soundcards.
4 * Copyright (C) 2009 Krzysztof Helt <krzysztof.h1@wp.pl>
5 * Based on patches posted by Rask Ingemann Lambertsen and Rene Herman.
6 * Based on OSS Sound Blaster driver.
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive for
10 * more details.
14 #include <linux/init.h>
15 #include <linux/module.h>
16 #include <linux/io.h>
17 #include <linux/delay.h>
18 #include <asm/dma.h>
19 #include <linux/isa.h>
20 #include <sound/core.h>
21 #include <sound/mpu401.h>
22 #include <sound/opl3.h>
23 #include <sound/sb.h>
24 #define SNDRV_LEGACY_FIND_FREE_IRQ
25 #define SNDRV_LEGACY_FIND_FREE_DMA
26 #include <sound/initval.h>
28 #define PFX "jazz16: "
30 MODULE_DESCRIPTION("Media Vision Jazz16");
31 MODULE_SUPPORTED_DEVICE("{{Media Vision ??? },"
32 "{RTL,RTL3000}}");
34 MODULE_AUTHOR("Krzysztof Helt <krzysztof.h1@wp.pl>");
35 MODULE_LICENSE("GPL");
37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
39 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
40 static unsigned long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
41 static unsigned long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
42 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
43 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
44 static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
45 static int dma16[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
47 module_param_array(index, int, NULL, 0444);
48 MODULE_PARM_DESC(index, "Index value for Media Vision Jazz16 based soundcard.");
49 module_param_array(id, charp, NULL, 0444);
50 MODULE_PARM_DESC(id, "ID string for Media Vision Jazz16 based soundcard.");
51 module_param_array(enable, bool, NULL, 0444);
52 MODULE_PARM_DESC(enable, "Enable Media Vision Jazz16 based soundcard.");
53 module_param_array(port, long, NULL, 0444);
54 MODULE_PARM_DESC(port, "Port # for jazz16 driver.");
55 module_param_array(mpu_port, long, NULL, 0444);
56 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for jazz16 driver.");
57 module_param_array(irq, int, NULL, 0444);
58 MODULE_PARM_DESC(irq, "IRQ # for jazz16 driver.");
59 module_param_array(mpu_irq, int, NULL, 0444);
60 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for jazz16 driver.");
61 module_param_array(dma8, int, NULL, 0444);
62 MODULE_PARM_DESC(dma8, "DMA8 # for jazz16 driver.");
63 module_param_array(dma16, int, NULL, 0444);
64 MODULE_PARM_DESC(dma16, "DMA16 # for jazz16 driver.");
66 #define SB_JAZZ16_WAKEUP 0xaf
67 #define SB_JAZZ16_SET_PORTS 0x50
68 #define SB_DSP_GET_JAZZ_BRD_REV 0xfa
69 #define SB_JAZZ16_SET_DMAINTR 0xfb
70 #define SB_DSP_GET_JAZZ_MODEL 0xfe
72 struct snd_card_jazz16 {
73 struct snd_sb *chip;
76 static irqreturn_t jazz16_interrupt(int irq, void *chip)
78 return snd_sb8dsp_interrupt(chip);
81 static int __devinit jazz16_configure_ports(unsigned long port,
82 unsigned long mpu_port, int idx)
84 unsigned char val;
86 if (!request_region(0x201, 1, "jazz16 config")) {
87 snd_printk(KERN_ERR "config port region is already in use.\n");
88 return -EBUSY;
90 outb(SB_JAZZ16_WAKEUP - idx, 0x201);
91 udelay(100);
92 outb(SB_JAZZ16_SET_PORTS + idx, 0x201);
93 udelay(100);
94 val = port & 0x70;
95 val |= (mpu_port & 0x30) >> 4;
96 outb(val, 0x201);
98 release_region(0x201, 1);
99 return 0;
102 static int __devinit jazz16_detect_board(unsigned long port,
103 unsigned long mpu_port)
105 int err;
106 int val;
107 struct snd_sb chip;
109 if (!request_region(port, 0x10, "jazz16")) {
110 snd_printk(KERN_ERR "I/O port region is already in use.\n");
111 return -EBUSY;
113 /* just to call snd_sbdsp_command/reset/get_byte() */
114 chip.port = port;
116 err = snd_sbdsp_reset(&chip);
117 if (err < 0)
118 for (val = 0; val < 4; val++) {
119 err = jazz16_configure_ports(port, mpu_port, val);
120 if (err < 0)
121 break;
123 err = snd_sbdsp_reset(&chip);
124 if (!err)
125 break;
127 if (err < 0) {
128 err = -ENODEV;
129 goto err_unmap;
131 if (!snd_sbdsp_command(&chip, SB_DSP_GET_JAZZ_BRD_REV)) {
132 err = -EBUSY;
133 goto err_unmap;
135 val = snd_sbdsp_get_byte(&chip);
136 if (val >= 0x30)
137 snd_sbdsp_get_byte(&chip);
139 if ((val & 0xf0) != 0x10) {
140 err = -ENODEV;
141 goto err_unmap;
143 if (!snd_sbdsp_command(&chip, SB_DSP_GET_JAZZ_MODEL)) {
144 err = -EBUSY;
145 goto err_unmap;
147 snd_sbdsp_get_byte(&chip);
148 err = snd_sbdsp_get_byte(&chip);
149 snd_printd("Media Vision Jazz16 board detected: rev 0x%x, model 0x%x\n",
150 val, err);
152 err = 0;
154 err_unmap:
155 release_region(port, 0x10);
156 return err;
159 static int __devinit jazz16_configure_board(struct snd_sb *chip, int mpu_irq)
161 static unsigned char jazz_irq_bits[] = { 0, 0, 2, 3, 0, 1, 0, 4,
162 0, 2, 5, 0, 0, 0, 0, 6 };
163 static unsigned char jazz_dma_bits[] = { 0, 1, 0, 2, 0, 3, 0, 4 };
165 if (jazz_dma_bits[chip->dma8] == 0 ||
166 jazz_dma_bits[chip->dma16] == 0 ||
167 jazz_irq_bits[chip->irq] == 0)
168 return -EINVAL;
170 if (!snd_sbdsp_command(chip, SB_JAZZ16_SET_DMAINTR))
171 return -EBUSY;
173 if (!snd_sbdsp_command(chip,
174 jazz_dma_bits[chip->dma8] |
175 (jazz_dma_bits[chip->dma16] << 4)))
176 return -EBUSY;
178 if (!snd_sbdsp_command(chip,
179 jazz_irq_bits[chip->irq] |
180 (jazz_irq_bits[mpu_irq] << 4)))
181 return -EBUSY;
183 return 0;
186 static int __devinit snd_jazz16_match(struct device *devptr, unsigned int dev)
188 if (!enable[dev])
189 return 0;
190 if (port[dev] == SNDRV_AUTO_PORT) {
191 snd_printk(KERN_ERR "please specify port\n");
192 return 0;
193 } else if (port[dev] == 0x200 || (port[dev] & ~0x270)) {
194 snd_printk(KERN_ERR "incorrect port specified\n");
195 return 0;
197 if (dma8[dev] != SNDRV_AUTO_DMA &&
198 dma8[dev] != 1 && dma8[dev] != 3) {
199 snd_printk(KERN_ERR "dma8 must be 1 or 3\n");
200 return 0;
202 if (dma16[dev] != SNDRV_AUTO_DMA &&
203 dma16[dev] != 5 && dma16[dev] != 7) {
204 snd_printk(KERN_ERR "dma16 must be 5 or 7\n");
205 return 0;
207 if (mpu_port[dev] != SNDRV_AUTO_PORT &&
208 (mpu_port[dev] & ~0x030) != 0x300) {
209 snd_printk(KERN_ERR "incorrect mpu_port specified\n");
210 return 0;
212 if (mpu_irq[dev] != SNDRV_AUTO_DMA &&
213 mpu_irq[dev] != 2 && mpu_irq[dev] != 3 &&
214 mpu_irq[dev] != 5 && mpu_irq[dev] != 7) {
215 snd_printk(KERN_ERR "mpu_irq must be 2, 3, 5 or 7\n");
216 return 0;
218 return 1;
221 static int __devinit snd_jazz16_probe(struct device *devptr, unsigned int dev)
223 struct snd_card *card;
224 struct snd_card_jazz16 *jazz16;
225 struct snd_sb *chip;
226 struct snd_opl3 *opl3;
227 static int possible_irqs[] = {2, 3, 5, 7, 9, 10, 15, -1};
228 static int possible_dmas8[] = {1, 3, -1};
229 static int possible_dmas16[] = {5, 7, -1};
230 int err, xirq, xdma8, xdma16, xmpu_port, xmpu_irq;
232 err = snd_card_create(index[dev], id[dev], THIS_MODULE,
233 sizeof(struct snd_card_jazz16), &card);
234 if (err < 0)
235 return err;
237 jazz16 = card->private_data;
239 xirq = irq[dev];
240 if (xirq == SNDRV_AUTO_IRQ) {
241 xirq = snd_legacy_find_free_irq(possible_irqs);
242 if (xirq < 0) {
243 snd_printk(KERN_ERR "unable to find a free IRQ\n");
244 err = -EBUSY;
245 goto err_free;
248 xdma8 = dma8[dev];
249 if (xdma8 == SNDRV_AUTO_DMA) {
250 xdma8 = snd_legacy_find_free_dma(possible_dmas8);
251 if (xdma8 < 0) {
252 snd_printk(KERN_ERR "unable to find a free DMA8\n");
253 err = -EBUSY;
254 goto err_free;
257 xdma16 = dma16[dev];
258 if (xdma16 == SNDRV_AUTO_DMA) {
259 xdma16 = snd_legacy_find_free_dma(possible_dmas16);
260 if (xdma16 < 0) {
261 snd_printk(KERN_ERR "unable to find a free DMA16\n");
262 err = -EBUSY;
263 goto err_free;
267 xmpu_port = mpu_port[dev];
268 if (xmpu_port == SNDRV_AUTO_PORT)
269 xmpu_port = 0;
270 err = jazz16_detect_board(port[dev], xmpu_port);
271 if (err < 0) {
272 printk(KERN_ERR "Media Vision Jazz16 board not detected\n");
273 goto err_free;
275 err = snd_sbdsp_create(card, port[dev], irq[dev],
276 jazz16_interrupt,
277 dma8[dev], dma16[dev],
278 SB_HW_JAZZ16,
279 &chip);
280 if (err < 0)
281 goto err_free;
283 xmpu_irq = mpu_irq[dev];
284 if (xmpu_irq == SNDRV_AUTO_IRQ || mpu_port[dev] == SNDRV_AUTO_PORT)
285 xmpu_irq = 0;
286 err = jazz16_configure_board(chip, xmpu_irq);
287 if (err < 0) {
288 printk(KERN_ERR "Media Vision Jazz16 configuration failed\n");
289 goto err_free;
292 jazz16->chip = chip;
294 strcpy(card->driver, "jazz16");
295 strcpy(card->shortname, "Media Vision Jazz16");
296 sprintf(card->longname,
297 "Media Vision Jazz16 at 0x%lx, irq %d, dma8 %d, dma16 %d",
298 port[dev], xirq, xdma8, xdma16);
300 err = snd_sb8dsp_pcm(chip, 0, NULL);
301 if (err < 0)
302 goto err_free;
303 err = snd_sbmixer_new(chip);
304 if (err < 0)
305 goto err_free;
307 err = snd_opl3_create(card, chip->port, chip->port + 2,
308 OPL3_HW_AUTO, 1, &opl3);
309 if (err < 0)
310 snd_printk(KERN_WARNING "no OPL device at 0x%lx-0x%lx\n",
311 chip->port, chip->port + 2);
312 else {
313 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
314 if (err < 0)
315 goto err_free;
317 if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
318 if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
319 mpu_irq[dev] = -1;
321 if (snd_mpu401_uart_new(card, 0,
322 MPU401_HW_MPU401,
323 mpu_port[dev], 0,
324 mpu_irq[dev],
325 NULL) < 0)
326 snd_printk(KERN_ERR "no MPU-401 device at 0x%lx\n",
327 mpu_port[dev]);
330 snd_card_set_dev(card, devptr);
332 err = snd_card_register(card);
333 if (err < 0)
334 goto err_free;
336 dev_set_drvdata(devptr, card);
337 return 0;
339 err_free:
340 snd_card_free(card);
341 return err;
344 static int __devexit snd_jazz16_remove(struct device *devptr, unsigned int dev)
346 struct snd_card *card = dev_get_drvdata(devptr);
348 dev_set_drvdata(devptr, NULL);
349 snd_card_free(card);
350 return 0;
353 #ifdef CONFIG_PM
354 static int snd_jazz16_suspend(struct device *pdev, unsigned int n,
355 pm_message_t state)
357 struct snd_card *card = dev_get_drvdata(pdev);
358 struct snd_card_jazz16 *acard = card->private_data;
359 struct snd_sb *chip = acard->chip;
361 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
362 snd_pcm_suspend_all(chip->pcm);
363 snd_sbmixer_suspend(chip);
364 return 0;
367 static int snd_jazz16_resume(struct device *pdev, unsigned int n)
369 struct snd_card *card = dev_get_drvdata(pdev);
370 struct snd_card_jazz16 *acard = card->private_data;
371 struct snd_sb *chip = acard->chip;
373 snd_sbdsp_reset(chip);
374 snd_sbmixer_resume(chip);
375 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
376 return 0;
378 #endif
380 static struct isa_driver snd_jazz16_driver = {
381 .match = snd_jazz16_match,
382 .probe = snd_jazz16_probe,
383 .remove = __devexit_p(snd_jazz16_remove),
384 #ifdef CONFIG_PM
385 .suspend = snd_jazz16_suspend,
386 .resume = snd_jazz16_resume,
387 #endif
388 .driver = {
389 .name = "jazz16"
393 static int __init alsa_card_jazz16_init(void)
395 return isa_register_driver(&snd_jazz16_driver, SNDRV_CARDS);
398 static void __exit alsa_card_jazz16_exit(void)
400 isa_unregister_driver(&snd_jazz16_driver);
403 module_init(alsa_card_jazz16_init)
404 module_exit(alsa_card_jazz16_exit)