gus_reset.c 12 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * Copyright (c) by Jaroslav Kysela <[email protected]>
  4. */
  5. #include <linux/delay.h>
  6. #include <linux/interrupt.h>
  7. #include <linux/time.h>
  8. #include <sound/core.h>
  9. #include <sound/gus.h>
  10. extern int snd_gf1_synth_init(struct snd_gus_card * gus);
  11. extern void snd_gf1_synth_done(struct snd_gus_card * gus);
  12. /*
  13. * ok.. default interrupt handlers...
  14. */
  15. static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
  16. {
  17. snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
  18. }
  19. static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
  20. {
  21. snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
  22. }
  23. static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
  24. {
  25. snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
  26. }
  27. static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
  28. {
  29. snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
  30. }
  31. static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
  32. {
  33. snd_gf1_i_ctrl_stop(gus, 0x00);
  34. snd_gf1_i_ctrl_stop(gus, 0x0d);
  35. }
  36. static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
  37. {
  38. snd_gf1_i_write8(gus, 0x41, 0x00);
  39. }
  40. static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
  41. {
  42. snd_gf1_i_write8(gus, 0x49, 0x00);
  43. }
  44. void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
  45. {
  46. if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
  47. gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
  48. if (what & SNDRV_GF1_HANDLER_MIDI_IN)
  49. gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
  50. if (what & SNDRV_GF1_HANDLER_TIMER1)
  51. gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
  52. if (what & SNDRV_GF1_HANDLER_TIMER2)
  53. gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
  54. if (what & SNDRV_GF1_HANDLER_VOICE) {
  55. struct snd_gus_voice *voice;
  56. voice = &gus->gf1.voices[what & 0xffff];
  57. voice->handler_wave =
  58. voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
  59. voice->handler_effect = NULL;
  60. voice->volume_change = NULL;
  61. }
  62. if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
  63. gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
  64. if (what & SNDRV_GF1_HANDLER_DMA_READ)
  65. gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
  66. }
  67. /*
  68. */
  69. static void snd_gf1_clear_regs(struct snd_gus_card * gus)
  70. {
  71. unsigned long flags;
  72. spin_lock_irqsave(&gus->reg_lock, flags);
  73. inb(GUSP(gus, IRQSTAT));
  74. snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */
  75. snd_gf1_write8(gus, 0x45, 0); /* Timer Control */
  76. snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */
  77. spin_unlock_irqrestore(&gus->reg_lock, flags);
  78. }
  79. static void snd_gf1_look_regs(struct snd_gus_card * gus)
  80. {
  81. unsigned long flags;
  82. spin_lock_irqsave(&gus->reg_lock, flags);
  83. snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */
  84. snd_gf1_look8(gus, 0x49); /* Sampling Control Register */
  85. inb(GUSP(gus, IRQSTAT));
  86. snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */
  87. spin_unlock_irqrestore(&gus->reg_lock, flags);
  88. }
  89. /*
  90. * put selected GF1 voices to initial stage...
  91. */
  92. void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
  93. {
  94. unsigned long flags;
  95. spin_lock_irqsave(&gus->reg_lock, flags);
  96. snd_gf1_select_voice(gus, voice);
  97. #if 0
  98. printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
  99. #endif
  100. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
  101. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
  102. spin_unlock_irqrestore(&gus->reg_lock, flags);
  103. }
  104. void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
  105. {
  106. unsigned long flags;
  107. spin_lock_irqsave(&gus->reg_lock, flags);
  108. snd_gf1_select_voice(gus, voice);
  109. #if 0
  110. printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
  111. #endif
  112. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
  113. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
  114. if (gus->gf1.enh_mode)
  115. snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
  116. spin_unlock_irqrestore(&gus->reg_lock, flags);
  117. #if 0
  118. snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
  119. snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
  120. #endif
  121. }
  122. static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
  123. unsigned short v_max)
  124. {
  125. unsigned long flags;
  126. unsigned int daddr;
  127. unsigned short i, w_16;
  128. daddr = gus->gf1.default_voice_address << 4;
  129. for (i = v_min; i <= v_max; i++) {
  130. #if 0
  131. if (gus->gf1.syn_voices)
  132. gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
  133. #endif
  134. spin_lock_irqsave(&gus->reg_lock, flags);
  135. snd_gf1_select_voice(gus, i);
  136. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */
  137. snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */
  138. if (gus->gf1.enh_mode)
  139. snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */
  140. w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
  141. snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
  142. snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
  143. snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
  144. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
  145. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
  146. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
  147. snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
  148. snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
  149. snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
  150. if (gus->gf1.enh_mode) {
  151. snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
  152. snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
  153. snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
  154. }
  155. spin_unlock_irqrestore(&gus->reg_lock, flags);
  156. #if 0
  157. snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
  158. snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
  159. #endif
  160. }
  161. }
  162. void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
  163. {
  164. unsigned long flags;
  165. short i, ramp_ok;
  166. unsigned short ramp_end;
  167. if (!in_interrupt()) { /* this can't be done in interrupt */
  168. for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
  169. spin_lock_irqsave(&gus->reg_lock, flags);
  170. snd_gf1_select_voice(gus, i);
  171. ramp_end = snd_gf1_read16(gus, 9) >> 8;
  172. if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
  173. ramp_ok++;
  174. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */
  175. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */
  176. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
  177. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
  178. if (gus->gf1.enh_mode) {
  179. snd_gf1_delay(gus);
  180. snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
  181. }
  182. }
  183. spin_unlock_irqrestore(&gus->reg_lock, flags);
  184. }
  185. msleep_interruptible(50);
  186. }
  187. snd_gf1_clear_voices(gus, v_min, v_max);
  188. }
  189. static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus,
  190. struct snd_gus_voice * pvoice,
  191. int type, int client, int port)
  192. {
  193. pvoice->use = 1;
  194. switch (type) {
  195. case SNDRV_GF1_VOICE_TYPE_PCM:
  196. gus->gf1.pcm_alloc_voices++;
  197. pvoice->pcm = 1;
  198. break;
  199. case SNDRV_GF1_VOICE_TYPE_SYNTH:
  200. pvoice->synth = 1;
  201. pvoice->client = client;
  202. pvoice->port = port;
  203. break;
  204. case SNDRV_GF1_VOICE_TYPE_MIDI:
  205. pvoice->midi = 1;
  206. pvoice->client = client;
  207. pvoice->port = port;
  208. break;
  209. }
  210. }
  211. struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
  212. {
  213. struct snd_gus_voice *pvoice;
  214. unsigned long flags;
  215. int idx;
  216. spin_lock_irqsave(&gus->voice_alloc, flags);
  217. if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
  218. if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
  219. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  220. return NULL;
  221. }
  222. }
  223. for (idx = 0; idx < 32; idx++) {
  224. pvoice = &gus->gf1.voices[idx];
  225. if (!pvoice->use) {
  226. snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
  227. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  228. return pvoice;
  229. }
  230. }
  231. for (idx = 0; idx < 32; idx++) {
  232. pvoice = &gus->gf1.voices[idx];
  233. if (pvoice->midi && !pvoice->client) {
  234. snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
  235. snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
  236. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  237. return pvoice;
  238. }
  239. }
  240. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  241. return NULL;
  242. }
  243. void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
  244. {
  245. unsigned long flags;
  246. void (*private_free)(struct snd_gus_voice *voice);
  247. if (voice == NULL || !voice->use)
  248. return;
  249. snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
  250. snd_gf1_clear_voices(gus, voice->number, voice->number);
  251. spin_lock_irqsave(&gus->voice_alloc, flags);
  252. private_free = voice->private_free;
  253. voice->private_free = NULL;
  254. voice->private_data = NULL;
  255. if (voice->pcm)
  256. gus->gf1.pcm_alloc_voices--;
  257. voice->use = voice->pcm = 0;
  258. voice->sample_ops = NULL;
  259. spin_unlock_irqrestore(&gus->voice_alloc, flags);
  260. if (private_free)
  261. private_free(voice);
  262. }
  263. /*
  264. * call this function only by start of driver
  265. */
  266. int snd_gf1_start(struct snd_gus_card * gus)
  267. {
  268. unsigned long flags;
  269. unsigned int i;
  270. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
  271. udelay(160);
  272. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
  273. udelay(160);
  274. snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
  275. snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
  276. for (i = 0; i < 32; i++) {
  277. gus->gf1.voices[i].number = i;
  278. snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
  279. }
  280. snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
  281. if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
  282. snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
  283. snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
  284. }
  285. snd_gf1_clear_regs(gus);
  286. snd_gf1_select_active_voices(gus);
  287. snd_gf1_delay(gus);
  288. gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
  289. /* initialize LFOs & clear LFOs memory */
  290. if (gus->gf1.enh_mode && gus->gf1.memory) {
  291. gus->gf1.hw_lfo = 1;
  292. gus->gf1.default_voice_address += 1024;
  293. } else {
  294. gus->gf1.sw_lfo = 1;
  295. }
  296. #if 0
  297. snd_gf1_lfo_init(gus);
  298. #endif
  299. if (gus->gf1.memory > 0)
  300. for (i = 0; i < 4; i++)
  301. snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
  302. snd_gf1_clear_regs(gus);
  303. snd_gf1_clear_voices(gus, 0, 31);
  304. snd_gf1_look_regs(gus);
  305. udelay(160);
  306. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
  307. udelay(160);
  308. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
  309. if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
  310. snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
  311. snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
  312. }
  313. while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
  314. spin_lock_irqsave(&gus->reg_lock, flags);
  315. outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
  316. outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
  317. spin_unlock_irqrestore(&gus->reg_lock, flags);
  318. snd_gf1_timers_init(gus);
  319. snd_gf1_look_regs(gus);
  320. snd_gf1_mem_init(gus);
  321. snd_gf1_mem_proc_init(gus);
  322. #ifdef CONFIG_SND_DEBUG
  323. snd_gus_irq_profile_init(gus);
  324. #endif
  325. #if 0
  326. if (gus->pnp_flag) {
  327. if (gus->chip.playback_fifo_size > 0)
  328. snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
  329. if (gus->chip.record_fifo_size > 0)
  330. snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
  331. snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
  332. }
  333. #endif
  334. return 0;
  335. }
  336. /*
  337. * call this function only by shutdown of driver
  338. */
  339. int snd_gf1_stop(struct snd_gus_card * gus)
  340. {
  341. snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
  342. snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */
  343. snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
  344. snd_gf1_timers_done(gus);
  345. snd_gf1_mem_done(gus);
  346. #if 0
  347. snd_gf1_lfo_done(gus);
  348. #endif
  349. return 0;
  350. }