gus_reset.c 13 KB

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  1. /*
  2. * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
  3. *
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation; either version 2 of the License, or
  8. * (at your option) any later version.
  9. *
  10. * This program is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. * GNU General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with this program; if not, write to the Free Software
  17. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18. *
  19. */
  20. #include <sound/driver.h>
  21. #include <linux/delay.h>
  22. #include <linux/interrupt.h>
  23. #include <linux/time.h>
  24. #include <sound/core.h>
  25. #include <sound/gus.h>
  26. extern void snd_gf1_timers_init(struct snd_gus_card * gus);
  27. extern void snd_gf1_timers_done(struct snd_gus_card * gus);
  28. extern int snd_gf1_synth_init(struct snd_gus_card * gus);
  29. extern void snd_gf1_synth_done(struct snd_gus_card * gus);
  30. /*
  31. * ok.. default interrupt handlers...
  32. */
  33. static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
  34. {
  35. snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
  36. }
  37. static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
  38. {
  39. snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
  40. }
  41. static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
  42. {
  43. snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
  44. }
  45. static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
  46. {
  47. snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
  48. }
  49. static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
  50. {
  51. snd_gf1_i_ctrl_stop(gus, 0x00);
  52. snd_gf1_i_ctrl_stop(gus, 0x0d);
  53. }
  54. static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
  55. {
  56. snd_gf1_i_write8(gus, 0x41, 0x00);
  57. }
  58. static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
  59. {
  60. snd_gf1_i_write8(gus, 0x49, 0x00);
  61. }
  62. void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
  63. {
  64. if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
  65. gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
  66. if (what & SNDRV_GF1_HANDLER_MIDI_IN)
  67. gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
  68. if (what & SNDRV_GF1_HANDLER_TIMER1)
  69. gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
  70. if (what & SNDRV_GF1_HANDLER_TIMER2)
  71. gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
  72. if (what & SNDRV_GF1_HANDLER_VOICE) {
  73. struct snd_gus_voice *voice;
  74. voice = &gus->gf1.voices[what & 0xffff];
  75. voice->handler_wave =
  76. voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
  77. voice->handler_effect = NULL;
  78. voice->volume_change = NULL;
  79. }
  80. if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
  81. gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
  82. if (what & SNDRV_GF1_HANDLER_DMA_READ)
  83. gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
  84. }
  85. /*
  86. */
  87. static void snd_gf1_clear_regs(struct snd_gus_card * gus)
  88. {
  89. unsigned long flags;
  90. spin_lock_irqsave(&gus->reg_lock, flags);
  91. inb(GUSP(gus, IRQSTAT));
  92. snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */
  93. snd_gf1_write8(gus, 0x45, 0); /* Timer Control */
  94. snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */
  95. spin_unlock_irqrestore(&gus->reg_lock, flags);
  96. }
  97. static void snd_gf1_look_regs(struct snd_gus_card * gus)
  98. {
  99. unsigned long flags;
  100. spin_lock_irqsave(&gus->reg_lock, flags);
  101. snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */
  102. snd_gf1_look8(gus, 0x49); /* Sampling Control Register */
  103. inb(GUSP(gus, IRQSTAT));
  104. snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */
  105. spin_unlock_irqrestore(&gus->reg_lock, flags);
  106. }
  107. /*
  108. * put selected GF1 voices to initial stage...
  109. */
  110. void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
  111. {
  112. unsigned long flags;
  113. spin_lock_irqsave(&gus->reg_lock, flags);
  114. snd_gf1_select_voice(gus, voice);
  115. #if 0
  116. printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
  117. #endif
  118. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
  119. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
  120. spin_unlock_irqrestore(&gus->reg_lock, flags);
  121. }
  122. void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
  123. {
  124. unsigned long flags;
  125. spin_lock_irqsave(&gus->reg_lock, flags);
  126. snd_gf1_select_voice(gus, voice);
  127. #if 0
  128. printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
  129. #endif
  130. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
  131. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
  132. if (gus->gf1.enh_mode)
  133. snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
  134. spin_unlock_irqrestore(&gus->reg_lock, flags);
  135. #if 0
  136. snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
  137. snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
  138. #endif
  139. }
  140. static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
  141. unsigned short v_max)
  142. {
  143. unsigned long flags;
  144. unsigned int daddr;
  145. unsigned short i, w_16;
  146. daddr = gus->gf1.default_voice_address << 4;
  147. for (i = v_min; i <= v_max; i++) {
  148. #if 0
  149. if (gus->gf1.syn_voices)
  150. gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
  151. #endif
  152. spin_lock_irqsave(&gus->reg_lock, flags);
  153. snd_gf1_select_voice(gus, i);
  154. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */
  155. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */
  156. if (gus->gf1.enh_mode)
  157. snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */
  158. w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
  159. snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
  160. snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
  161. snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
  162. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
  163. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
  164. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
  165. snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
  166. snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
  167. snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
  168. if (gus->gf1.enh_mode) {
  169. snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
  170. snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
  171. snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
  172. }
  173. spin_unlock_irqrestore(&gus->reg_lock, flags);
  174. #if 0
  175. snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
  176. snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
  177. #endif
  178. }
  179. }
  180. void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
  181. {
  182. unsigned long flags;
  183. short i, ramp_ok;
  184. unsigned short ramp_end;
  185. if (!in_interrupt()) { /* this can't be done in interrupt */
  186. for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
  187. spin_lock_irqsave(&gus->reg_lock, flags);
  188. snd_gf1_select_voice(gus, i);
  189. ramp_end = snd_gf1_read16(gus, 9) >> 8;
  190. if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
  191. ramp_ok++;
  192. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */
  193. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */
  194. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
  195. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
  196. if (gus->gf1.enh_mode) {
  197. snd_gf1_delay(gus);
  198. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
  199. }
  200. }
  201. spin_unlock_irqrestore(&gus->reg_lock, flags);
  202. }
  203. msleep_interruptible(50);
  204. }
  205. snd_gf1_clear_voices(gus, v_min, v_max);
  206. }
  207. static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus,
  208. struct snd_gus_voice * pvoice,
  209. int type, int client, int port)
  210. {
  211. pvoice->use = 1;
  212. switch (type) {
  213. case SNDRV_GF1_VOICE_TYPE_PCM:
  214. gus->gf1.pcm_alloc_voices++;
  215. pvoice->pcm = 1;
  216. break;
  217. case SNDRV_GF1_VOICE_TYPE_SYNTH:
  218. pvoice->synth = 1;
  219. pvoice->client = client;
  220. pvoice->port = port;
  221. break;
  222. case SNDRV_GF1_VOICE_TYPE_MIDI:
  223. pvoice->midi = 1;
  224. pvoice->client = client;
  225. pvoice->port = port;
  226. break;
  227. }
  228. }
  229. struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
  230. {
  231. struct snd_gus_voice *pvoice;
  232. unsigned long flags;
  233. int idx;
  234. spin_lock_irqsave(&gus->voice_alloc, flags);
  235. if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
  236. if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
  237. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  238. return NULL;
  239. }
  240. }
  241. for (idx = 0; idx < 32; idx++) {
  242. pvoice = &gus->gf1.voices[idx];
  243. if (!pvoice->use) {
  244. snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
  245. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  246. return pvoice;
  247. }
  248. }
  249. for (idx = 0; idx < 32; idx++) {
  250. pvoice = &gus->gf1.voices[idx];
  251. if (pvoice->midi && !pvoice->client) {
  252. snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
  253. snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
  254. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  255. return pvoice;
  256. }
  257. }
  258. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  259. return NULL;
  260. }
  261. void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
  262. {
  263. unsigned long flags;
  264. void (*private_free)(struct snd_gus_voice *voice);
  265. void *private_data;
  266. if (voice == NULL || !voice->use)
  267. return;
  268. snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
  269. snd_gf1_clear_voices(gus, voice->number, voice->number);
  270. spin_lock_irqsave(&gus->voice_alloc, flags);
  271. private_free = voice->private_free;
  272. private_data = voice->private_data;
  273. voice->private_free = NULL;
  274. voice->private_data = NULL;
  275. if (voice->pcm)
  276. gus->gf1.pcm_alloc_voices--;
  277. voice->use = voice->pcm = 0;
  278. voice->sample_ops = NULL;
  279. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  280. if (private_free)
  281. private_free(voice);
  282. }
  283. /*
  284. * call this function only by start of driver
  285. */
  286. int snd_gf1_start(struct snd_gus_card * gus)
  287. {
  288. unsigned long flags;
  289. unsigned int i;
  290. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
  291. udelay(160);
  292. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
  293. udelay(160);
  294. snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
  295. snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
  296. for (i = 0; i < 32; i++) {
  297. gus->gf1.voices[i].number = i;
  298. snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
  299. }
  300. snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
  301. if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
  302. snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
  303. snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
  304. }
  305. snd_gf1_clear_regs(gus);
  306. snd_gf1_select_active_voices(gus);
  307. snd_gf1_delay(gus);
  308. gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
  309. /* initialize LFOs & clear LFOs memory */
  310. if (gus->gf1.enh_mode && gus->gf1.memory) {
  311. gus->gf1.hw_lfo = 1;
  312. gus->gf1.default_voice_address += 1024;
  313. } else {
  314. gus->gf1.sw_lfo = 1;
  315. }
  316. #if 0
  317. snd_gf1_lfo_init(gus);
  318. #endif
  319. if (gus->gf1.memory > 0)
  320. for (i = 0; i < 4; i++)
  321. snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
  322. snd_gf1_clear_regs(gus);
  323. snd_gf1_clear_voices(gus, 0, 31);
  324. snd_gf1_look_regs(gus);
  325. udelay(160);
  326. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
  327. udelay(160);
  328. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
  329. if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
  330. snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
  331. snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
  332. }
  333. while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
  334. spin_lock_irqsave(&gus->reg_lock, flags);
  335. outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
  336. outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
  337. spin_unlock_irqrestore(&gus->reg_lock, flags);
  338. snd_gf1_timers_init(gus);
  339. snd_gf1_look_regs(gus);
  340. snd_gf1_mem_init(gus);
  341. snd_gf1_mem_proc_init(gus);
  342. #ifdef CONFIG_SND_DEBUG
  343. snd_gus_irq_profile_init(gus);
  344. #endif
  345. #if 0
  346. if (gus->pnp_flag) {
  347. if (gus->chip.playback_fifo_size > 0)
  348. snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
  349. if (gus->chip.record_fifo_size > 0)
  350. snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
  351. snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
  352. }
  353. #endif
  354. return 0;
  355. }
  356. /*
  357. * call this function only by shutdown of driver
  358. */
  359. int snd_gf1_stop(struct snd_gus_card * gus)
  360. {
  361. snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
  362. snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */
  363. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
  364. snd_gf1_timers_done(gus);
  365. snd_gf1_mem_done(gus);
  366. #if 0
  367. snd_gf1_lfo_done(gus);
  368. #endif
  369. return 0;
  370. }