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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / sound / isa / gus / gus_main.c
blob4490ee442ff47e4c92e20aabb948870c30f3c9ed
1 /*
2 * Routines for Gravis UltraSound soundcards
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22 #include <linux/init.h>
23 #include <linux/interrupt.h>
24 #include <linux/delay.h>
25 #include <linux/slab.h>
26 #include <linux/ioport.h>
27 #include <linux/module.h>
28 #include <sound/core.h>
29 #include <sound/gus.h>
30 #include <sound/control.h>
31
32 #include <asm/dma.h>
33
34 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
35 MODULE_DESCRIPTION("Routines for Gravis UltraSound soundcards");
36 MODULE_LICENSE("GPL");
37
38 static int snd_gus_init_dma_irq(struct snd_gus_card * gus, int latches);
39
40 int snd_gus_use_inc(struct snd_gus_card * gus)
41 {
42 if (!try_module_get(gus->card->module))
43 return 0;
44 return 1;
45 }
46
47 void snd_gus_use_dec(struct snd_gus_card * gus)
48 {
49 module_put(gus->card->module);
50 }
51
52 static int snd_gus_joystick_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
53 {
54 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
55 uinfo->count = 1;
56 uinfo->value.integer.min = 0;
57 uinfo->value.integer.max = 31;
58 return 0;
59 }
60
61 static int snd_gus_joystick_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
62 {
63 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
64
65 ucontrol->value.integer.value[0] = gus->joystick_dac & 31;
66 return 0;
67 }
68
69 static int snd_gus_joystick_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
70 {
71 struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
72 unsigned long flags;
73 int change;
74 unsigned char nval;
75
76 nval = ucontrol->value.integer.value[0] & 31;
77 spin_lock_irqsave(&gus->reg_lock, flags);
78 change = gus->joystick_dac != nval;
79 gus->joystick_dac = nval;
80 snd_gf1_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
81 spin_unlock_irqrestore(&gus->reg_lock, flags);
82 return change;
83 }
84
85 static struct snd_kcontrol_new snd_gus_joystick_control = {
86 .iface = SNDRV_CTL_ELEM_IFACE_CARD,
87 .name = "Joystick Speed",
88 .info = snd_gus_joystick_info,
89 .get = snd_gus_joystick_get,
90 .put = snd_gus_joystick_put
91 };
92
93 static void snd_gus_init_control(struct snd_gus_card *gus)
94 {
95 if (!gus->ace_flag)
96 snd_ctl_add(gus->card, snd_ctl_new1(&snd_gus_joystick_control, gus));
97 }
98
99 /*
100 *
101 */
102
103 static int snd_gus_free(struct snd_gus_card *gus)
104 {
105 if (gus->gf1.res_port2 == NULL)
106 goto __hw_end;
107 snd_gf1_stop(gus);
108 snd_gus_init_dma_irq(gus, 0);
109 __hw_end:
110 release_and_free_resource(gus->gf1.res_port1);
111 release_and_free_resource(gus->gf1.res_port2);
112 if (gus->gf1.irq >= 0)
113 free_irq(gus->gf1.irq, (void *) gus);
114 if (gus->gf1.dma1 >= 0) {
115 disable_dma(gus->gf1.dma1);
116 free_dma(gus->gf1.dma1);
117 }
118 if (!gus->equal_dma && gus->gf1.dma2 >= 0) {
119 disable_dma(gus->gf1.dma2);
120 free_dma(gus->gf1.dma2);
121 }
122 kfree(gus);
123 return 0;
124 }
125
126 static int snd_gus_dev_free(struct snd_device *device)
127 {
128 struct snd_gus_card *gus = device->device_data;
129 return snd_gus_free(gus);
130 }
131
132 int snd_gus_create(struct snd_card *card,
133 unsigned long port,
134 int irq, int dma1, int dma2,
135 int timer_dev,
136 int voices,
137 int pcm_channels,
138 int effect,
139 struct snd_gus_card **rgus)
140 {
141 struct snd_gus_card *gus;
142 int err;
143 static struct snd_device_ops ops = {
144 .dev_free = snd_gus_dev_free,
145 };
146
147 *rgus = NULL;
148 gus = kzalloc(sizeof(*gus), GFP_KERNEL);
149 if (gus == NULL)
150 return -ENOMEM;
151 spin_lock_init(&gus->reg_lock);
152 spin_lock_init(&gus->voice_alloc);
153 spin_lock_init(&gus->active_voice_lock);
154 spin_lock_init(&gus->event_lock);
155 spin_lock_init(&gus->dma_lock);
156 spin_lock_init(&gus->pcm_volume_level_lock);
157 spin_lock_init(&gus->uart_cmd_lock);
158 mutex_init(&gus->dma_mutex);
159 gus->gf1.irq = -1;
160 gus->gf1.dma1 = -1;
161 gus->gf1.dma2 = -1;
162 gus->card = card;
163 gus->gf1.port = port;
164 /* fill register variables for speedup */
165 gus->gf1.reg_page = GUSP(gus, GF1PAGE);
166 gus->gf1.reg_regsel = GUSP(gus, GF1REGSEL);
167 gus->gf1.reg_data8 = GUSP(gus, GF1DATAHIGH);
168 gus->gf1.reg_data16 = GUSP(gus, GF1DATALOW);
169 gus->gf1.reg_irqstat = GUSP(gus, IRQSTAT);
170 gus->gf1.reg_dram = GUSP(gus, DRAM);
171 gus->gf1.reg_timerctrl = GUSP(gus, TIMERCNTRL);
172 gus->gf1.reg_timerdata = GUSP(gus, TIMERDATA);
173 /* allocate resources */
174 if ((gus->gf1.res_port1 = request_region(port, 16, "GUS GF1 (Adlib/SB)")) == NULL) {
175 snd_printk(KERN_ERR "gus: can't grab SB port 0x%lx\n", port);
176 snd_gus_free(gus);
177 return -EBUSY;
178 }
179 if ((gus->gf1.res_port2 = request_region(port + 0x100, 12, "GUS GF1 (Synth)")) == NULL) {
180 snd_printk(KERN_ERR "gus: can't grab synth port 0x%lx\n", port + 0x100);
181 snd_gus_free(gus);
182 return -EBUSY;
183 }
184 if (irq >= 0 && request_irq(irq, snd_gus_interrupt, 0, "GUS GF1", (void *) gus)) {
185 snd_printk(KERN_ERR "gus: can't grab irq %d\n", irq);
186 snd_gus_free(gus);
187 return -EBUSY;
188 }
189 gus->gf1.irq = irq;
190 if (request_dma(dma1, "GUS - 1")) {
191 snd_printk(KERN_ERR "gus: can't grab DMA1 %d\n", dma1);
192 snd_gus_free(gus);
193 return -EBUSY;
194 }
195 gus->gf1.dma1 = dma1;
196 if (dma2 >= 0 && dma1 != dma2) {
197 if (request_dma(dma2, "GUS - 2")) {
198 snd_printk(KERN_ERR "gus: can't grab DMA2 %d\n", dma2);
199 snd_gus_free(gus);
200 return -EBUSY;
201 }
202 gus->gf1.dma2 = dma2;
203 } else {
204 gus->gf1.dma2 = gus->gf1.dma1;
205 gus->equal_dma = 1;
206 }
207 gus->timer_dev = timer_dev;
208 if (voices < 14)
209 voices = 14;
210 if (voices > 32)
211 voices = 32;
212 if (pcm_channels < 0)
213 pcm_channels = 0;
214 if (pcm_channels > 8)
215 pcm_channels = 8;
216 pcm_channels++;
217 pcm_channels &= ~1;
218 gus->gf1.effect = effect ? 1 : 0;
219 gus->gf1.active_voices = voices;
220 gus->gf1.pcm_channels = pcm_channels;
221 gus->gf1.volume_ramp = 25;
222 gus->gf1.smooth_pan = 1;
223 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, gus, &ops)) < 0) {
224 snd_gus_free(gus);
225 return err;
226 }
227 *rgus = gus;
228 return 0;
229 }
230
231 /*
232 * Memory detection routine for plain GF1 soundcards
233 */
234
235 static int snd_gus_detect_memory(struct snd_gus_card * gus)
236 {
237 int l, idx, local;
238 unsigned char d;
239
240 snd_gf1_poke(gus, 0L, 0xaa);
241 snd_gf1_poke(gus, 1L, 0x55);
242 if (snd_gf1_peek(gus, 0L) != 0xaa || snd_gf1_peek(gus, 1L) != 0x55) {
243 snd_printk(KERN_ERR "plain GF1 card at 0x%lx without onboard DRAM?\n", gus->gf1.port);
244 return -ENOMEM;
245 }
246 for (idx = 1, d = 0xab; idx < 4; idx++, d++) {
247 local = idx << 18;
248 snd_gf1_poke(gus, local, d);
249 snd_gf1_poke(gus, local + 1, d + 1);
250 if (snd_gf1_peek(gus, local) != d ||
251 snd_gf1_peek(gus, local + 1) != d + 1 ||
252 snd_gf1_peek(gus, 0L) != 0xaa)
253 break;
254 }
255 #if 1
256 gus->gf1.memory = idx << 18;
257 #else
258 gus->gf1.memory = 256 * 1024;
259 #endif
260 for (l = 0, local = gus->gf1.memory; l < 4; l++, local -= 256 * 1024) {
261 gus->gf1.mem_alloc.banks_8[l].address =
262 gus->gf1.mem_alloc.banks_8[l].size = 0;
263 gus->gf1.mem_alloc.banks_16[l].address = l << 18;
264 gus->gf1.mem_alloc.banks_16[l].size = local > 0 ? 256 * 1024 : 0;
265 }
266 gus->gf1.mem_alloc.banks_8[0].size = gus->gf1.memory;
267 return 0; /* some memory were detected */
268 }
269
270 static int snd_gus_init_dma_irq(struct snd_gus_card * gus, int latches)
271 {
272 struct snd_card *card;
273 unsigned long flags;
274 int irq, dma1, dma2;
275 static unsigned char irqs[16] =
276 {0, 0, 1, 3, 0, 2, 0, 4, 0, 1, 0, 5, 6, 0, 0, 7};
277 static unsigned char dmas[8] =
278 {6, 1, 0, 2, 0, 3, 4, 5};
279
280 if (snd_BUG_ON(!gus))
281 return -EINVAL;
282 card = gus->card;
283 if (snd_BUG_ON(!card))
284 return -EINVAL;
285
286 gus->mix_cntrl_reg &= 0xf8;
287 gus->mix_cntrl_reg |= 0x01; /* disable MIC, LINE IN, enable LINE OUT */
288 if (gus->codec_flag || gus->ess_flag) {
289 gus->mix_cntrl_reg &= ~1; /* enable LINE IN */
290 gus->mix_cntrl_reg |= 4; /* enable MIC */
291 }
292 dma1 = gus->gf1.dma1;
293 dma1 = abs(dma1);
294 dma1 = dmas[dma1 & 7];
295 dma2 = gus->gf1.dma2;
296 dma2 = abs(dma2);
297 dma2 = dmas[dma2 & 7];
298 dma1 |= gus->equal_dma ? 0x40 : (dma2 << 3);
299
300 if ((dma1 & 7) == 0 || (dma2 & 7) == 0) {
301 snd_printk(KERN_ERR "Error! DMA isn't defined.\n");
302 return -EINVAL;
303 }
304 irq = gus->gf1.irq;
305 irq = abs(irq);
306 irq = irqs[irq & 0x0f];
307 if (irq == 0) {
308 snd_printk(KERN_ERR "Error! IRQ isn't defined.\n");
309 return -EINVAL;
310 }
311 irq |= 0x40;
312 #if 0
313 card->mixer.mix_ctrl_reg |= 0x10;
314 #endif
315
316 spin_lock_irqsave(&gus->reg_lock, flags);
317 outb(5, GUSP(gus, REGCNTRLS));
318 outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
319 outb(0x00, GUSP(gus, IRQDMACNTRLREG));
320 outb(0, GUSP(gus, REGCNTRLS));
321 spin_unlock_irqrestore(&gus->reg_lock, flags);
322
323 udelay(100);
324
325 spin_lock_irqsave(&gus->reg_lock, flags);
326 outb(0x00 | gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
327 outb(dma1, GUSP(gus, IRQDMACNTRLREG));
328 if (latches) {
329 outb(0x40 | gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
330 outb(irq, GUSP(gus, IRQDMACNTRLREG));
331 }
332 spin_unlock_irqrestore(&gus->reg_lock, flags);
333
334 udelay(100);
335
336 spin_lock_irqsave(&gus->reg_lock, flags);
337 outb(0x00 | gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
338 outb(dma1, GUSP(gus, IRQDMACNTRLREG));
339 if (latches) {
340 outb(0x40 | gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
341 outb(irq, GUSP(gus, IRQDMACNTRLREG));
342 }
343 spin_unlock_irqrestore(&gus->reg_lock, flags);
344
345 snd_gf1_delay(gus);
346
347 if (latches)
348 gus->mix_cntrl_reg |= 0x08; /* enable latches */
349 else
350 gus->mix_cntrl_reg &= ~0x08; /* disable latches */
351 spin_lock_irqsave(&gus->reg_lock, flags);
352 outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
353 outb(0, GUSP(gus, GF1PAGE));
354 spin_unlock_irqrestore(&gus->reg_lock, flags);
355
356 return 0;
357 }
358
359 static int snd_gus_check_version(struct snd_gus_card * gus)
360 {
361 unsigned long flags;
362 unsigned char val, rev;
363 struct snd_card *card;
364
365 card = gus->card;
366 spin_lock_irqsave(&gus->reg_lock, flags);
367 outb(0x20, GUSP(gus, REGCNTRLS));
368 val = inb(GUSP(gus, REGCNTRLS));
369 rev = inb(GUSP(gus, BOARDVERSION));
370 spin_unlock_irqrestore(&gus->reg_lock, flags);
371 snd_printdd("GF1 [0x%lx] init - val = 0x%x, rev = 0x%x\n", gus->gf1.port, val, rev);
372 strcpy(card->driver, "GUS");
373 strcpy(card->longname, "Gravis UltraSound Classic (2.4)");
374 if ((val != 255 && (val & 0x06)) || (rev >= 5 && rev != 255)) {
375 if (rev >= 5 && rev <= 9) {
376 gus->ics_flag = 1;
377 if (rev == 5)
378 gus->ics_flipped = 1;
379 card->longname[27] = '3';
380 card->longname[29] = rev == 5 ? '5' : '7';
381 }
382 if (rev >= 10 && rev != 255) {
383 if (rev >= 10 && rev <= 11) {
384 strcpy(card->driver, "GUS MAX");
385 strcpy(card->longname, "Gravis UltraSound MAX");
386 gus->max_flag = 1;
387 } else if (rev == 0x30) {
388 strcpy(card->driver, "GUS ACE");
389 strcpy(card->longname, "Gravis UltraSound Ace");
390 gus->ace_flag = 1;
391 } else if (rev == 0x50) {
392 strcpy(card->driver, "GUS Extreme");
393 strcpy(card->longname, "Gravis UltraSound Extreme");
394 gus->ess_flag = 1;
395 } else {
396 snd_printk(KERN_ERR "unknown GF1 revision number at 0x%lx - 0x%x (0x%x)\n", gus->gf1.port, rev, val);
397 snd_printk(KERN_ERR " please - report to <perex@perex.cz>\n");
398 }
399 }
400 }
401 strcpy(card->shortname, card->longname);
402 gus->uart_enable = 1; /* standard GUSes doesn't have midi uart trouble */
403 snd_gus_init_control(gus);
404 return 0;
405 }
406
407 int snd_gus_initialize(struct snd_gus_card *gus)
408 {
409 int err;
410
411 if (!gus->interwave) {
412 if ((err = snd_gus_check_version(gus)) < 0) {
413 snd_printk(KERN_ERR "version check failed\n");
414 return err;
415 }
416 if ((err = snd_gus_detect_memory(gus)) < 0)
417 return err;
418 }
419 if ((err = snd_gus_init_dma_irq(gus, 1)) < 0)
420 return err;
421 snd_gf1_start(gus);
422 gus->initialized = 1;
423 return 0;
424 }
425
426 /* gus_io.c */
427 EXPORT_SYMBOL(snd_gf1_delay);
428 EXPORT_SYMBOL(snd_gf1_write8);
429 EXPORT_SYMBOL(snd_gf1_look8);
430 EXPORT_SYMBOL(snd_gf1_write16);
431 EXPORT_SYMBOL(snd_gf1_look16);
432 EXPORT_SYMBOL(snd_gf1_i_write8);
433 EXPORT_SYMBOL(snd_gf1_i_look8);
434 EXPORT_SYMBOL(snd_gf1_i_look16);
435 EXPORT_SYMBOL(snd_gf1_dram_addr);
436 EXPORT_SYMBOL(snd_gf1_write_addr);
437 EXPORT_SYMBOL(snd_gf1_poke);
438 EXPORT_SYMBOL(snd_gf1_peek);
439 /* gus_reset.c */
440 EXPORT_SYMBOL(snd_gf1_alloc_voice);
441 EXPORT_SYMBOL(snd_gf1_free_voice);
442 EXPORT_SYMBOL(snd_gf1_ctrl_stop);
443 EXPORT_SYMBOL(snd_gf1_stop_voice);
444 /* gus_mixer.c */
445 EXPORT_SYMBOL(snd_gf1_new_mixer);
446 /* gus_pcm.c */
447 EXPORT_SYMBOL(snd_gf1_pcm_new);
448 /* gus.c */
449 EXPORT_SYMBOL(snd_gus_use_inc);
450 EXPORT_SYMBOL(snd_gus_use_dec);
451 EXPORT_SYMBOL(snd_gus_create);
452 EXPORT_SYMBOL(snd_gus_initialize);
453 /* gus_irq.c */
454 EXPORT_SYMBOL(snd_gus_interrupt);
455 /* gus_uart.c */
456 EXPORT_SYMBOL(snd_gf1_rawmidi_new);
457 /* gus_dram.c */
458 EXPORT_SYMBOL(snd_gus_dram_write);
459 EXPORT_SYMBOL(snd_gus_dram_read);
460 /* gus_volume.c */
461 EXPORT_SYMBOL(snd_gf1_lvol_to_gvol_raw);
462 EXPORT_SYMBOL(snd_gf1_translate_freq);
463 /* gus_mem.c */
464 EXPORT_SYMBOL(snd_gf1_mem_alloc);
465 EXPORT_SYMBOL(snd_gf1_mem_xfree);
466 EXPORT_SYMBOL(snd_gf1_mem_free);
467 EXPORT_SYMBOL(snd_gf1_mem_lock);
468
469 /*
470 * INIT part
471 */
472
473 static int __init alsa_gus_init(void)
474 {
475 return 0;
476 }
477
478 static void __exit alsa_gus_exit(void)
479 {
480 }
481
482 module_init(alsa_gus_init)
483 module_exit(alsa_gus_exit)