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be2net: account for skb allocation failures
[linux-2.6.git] / sound / pci / als4000.c
blob0e247cb90eccb84effeaf54397fd87fc80a9630e
1 /*
2 * card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
3 * Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
4 * Jaroslav Kysela <perex@perex.cz>
5 * Copyright (C) 2002, 2008 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
6 *
7 * Framework borrowed from Massimo Piccioni's card-als100.c.
8 *
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 * NOTES
25 *
26 * Since Avance does not provide any meaningful documentation, and I
27 * bought an ALS4000 based soundcard, I was forced to base this driver
28 * on reverse engineering.
29 *
30 * Note: this is no longer true (thank you!):
31 * pretty verbose chip docu (ALS4000a.PDF) can be found on the ALSA web site.
32 * Page numbers stated anywhere below with the "SPECS_PAGE:" tag
33 * refer to: ALS4000a.PDF specs Ver 1.0, May 28th, 1998.
34 *
35 * The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
36 * ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
37 * interface. These subsystems can be mapped into ISA io-port space,
38 * using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
39 * services to the subsystems.
40 *
41 * While ALS4000 is very similar to a SoundBlaster, the differences in
42 * DMA and capturing require more changes to the SoundBlaster than
43 * desirable, so I made this separate driver.
44 *
45 * The ALS4000 can do real full duplex playback/capture.
46 *
47 * FMDAC:
48 * - 0x4f -> port 0x14
49 * - port 0x15 |= 1
50 *
51 * Enable/disable 3D sound:
52 * - 0x50 -> port 0x14
53 * - change bit 6 (0x40) of port 0x15
54 *
55 * Set QSound:
56 * - 0xdb -> port 0x14
57 * - set port 0x15:
58 * 0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
59 *
60 * Set KSound:
61 * - value -> some port 0x0c0d
62 *
63 * ToDo:
64 * - by default, don't enable legacy game and use PCI game I/O
65 * - power management? (card can do voice wakeup according to datasheet!!)
66 */
67
68 #include <asm/io.h>
69 #include <linux/init.h>
70 #include <linux/pci.h>
71 #include <linux/gameport.h>
72 #include <linux/moduleparam.h>
73 #include <linux/dma-mapping.h>
74 #include <sound/core.h>
75 #include <sound/pcm.h>
76 #include <sound/rawmidi.h>
77 #include <sound/mpu401.h>
78 #include <sound/opl3.h>
79 #include <sound/sb.h>
80 #include <sound/initval.h>
81
82 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr");
83 MODULE_DESCRIPTION("Avance Logic ALS4000");
84 MODULE_LICENSE("GPL");
85 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
86
87 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
88 #define SUPPORT_JOYSTICK 1
89 #endif
90
91 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
92 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
93 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
94 #ifdef SUPPORT_JOYSTICK
95 static int joystick_port[SNDRV_CARDS];
96 #endif
97
98 module_param_array(index, int, NULL, 0444);
99 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
100 module_param_array(id, charp, NULL, 0444);
101 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
102 module_param_array(enable, bool, NULL, 0444);
103 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
104 #ifdef SUPPORT_JOYSTICK
105 module_param_array(joystick_port, int, NULL, 0444);
106 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
107 #endif
108
109 struct snd_card_als4000 {
110 /* most frequent access first */
111 unsigned long iobase;
112 struct pci_dev *pci;
113 struct snd_sb *chip;
114 #ifdef SUPPORT_JOYSTICK
115 struct gameport *gameport;
116 #endif
117 };
118
119 static DEFINE_PCI_DEVICE_TABLE(snd_als4000_ids) = {
120 { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */
121 { 0, }
122 };
123
124 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
125
126 enum als4k_iobase_t {
127 /* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */
128 ALS4K_IOD_00_AC97_ACCESS = 0x00,
129 ALS4K_IOW_04_AC97_READ = 0x04,
130 ALS4K_IOB_06_AC97_STATUS = 0x06,
131 ALS4K_IOB_07_IRQSTATUS = 0x07,
132 ALS4K_IOD_08_GCR_DATA = 0x08,
133 ALS4K_IOB_0C_GCR_INDEX = 0x0c,
134 ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e,
135 ALS4K_IOB_10_ADLIB_ADDR0 = 0x10,
136 ALS4K_IOB_11_ADLIB_ADDR1 = 0x11,
137 ALS4K_IOB_12_ADLIB_ADDR2 = 0x12,
138 ALS4K_IOB_13_ADLIB_ADDR3 = 0x13,
139 ALS4K_IOB_14_MIXER_INDEX = 0x14,
140 ALS4K_IOB_15_MIXER_DATA = 0x15,
141 ALS4K_IOB_16_ESP_RESET = 0x16,
142 ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */
143 ALS4K_IOB_18_OPL_ADDR0 = 0x18,
144 ALS4K_IOB_19_OPL_ADDR1 = 0x19,
145 ALS4K_IOB_1A_ESP_RD_DATA = 0x1a,
146 ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c,
147 ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */
148 ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e,
149 ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f,
150 ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20,
151 ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21,
152 ALS4K_IOB_30_MIDI_DATA = 0x30,
153 ALS4K_IOB_31_MIDI_STATUS = 0x31,
154 ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */
155 };
156
157 enum als4k_iobase_0e_t {
158 ALS4K_IOB_0E_MPU_IRQ = 0x10,
159 ALS4K_IOB_0E_CR1E_IRQ = 0x40,
160 ALS4K_IOB_0E_SB_DMA_IRQ = 0x80,
161 };
162
163 enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */
164 ALS4K_GCR8C_MISC_CTRL = 0x8c,
165 ALS4K_GCR90_TEST_MODE_REG = 0x90,
166 ALS4K_GCR91_DMA0_ADDR = 0x91,
167 ALS4K_GCR92_DMA0_MODE_COUNT = 0x92,
168 ALS4K_GCR93_DMA1_ADDR = 0x93,
169 ALS4K_GCR94_DMA1_MODE_COUNT = 0x94,
170 ALS4K_GCR95_DMA3_ADDR = 0x95,
171 ALS4K_GCR96_DMA3_MODE_COUNT = 0x96,
172 ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99,
173 ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0,
174 ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1,
175 ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2,
176 ALS4K_GCRA3_FIFO2_COUNT = 0xa3,
177 ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4,
178 ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5,
179 ALS4K_GCRA6_PM_CTRL = 0xa6,
180 ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7,
181 ALS4K_GCRA8_LEGACY_CFG1 = 0xa8,
182 ALS4K_GCRA9_LEGACY_CFG2 = 0xa9,
183 ALS4K_GCRFF_DUMMY_SCRATCH = 0xff,
184 };
185
186 enum als4k_gcr8c_t {
187 ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000,
188 ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000
189 };
190
191 static inline void snd_als4k_iobase_writeb(unsigned long iobase,
192 enum als4k_iobase_t reg,
193 u8 val)
194 {
195 outb(val, iobase + reg);
196 }
197
198 static inline void snd_als4k_iobase_writel(unsigned long iobase,
199 enum als4k_iobase_t reg,
200 u32 val)
201 {
202 outl(val, iobase + reg);
203 }
204
205 static inline u8 snd_als4k_iobase_readb(unsigned long iobase,
206 enum als4k_iobase_t reg)
207 {
208 return inb(iobase + reg);
209 }
210
211 static inline u32 snd_als4k_iobase_readl(unsigned long iobase,
212 enum als4k_iobase_t reg)
213 {
214 return inl(iobase + reg);
215 }
216
217 static inline void snd_als4k_gcr_write_addr(unsigned long iobase,
218 enum als4k_gcr_t reg,
219 u32 val)
220 {
221 snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
222 snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val);
223 }
224
225 static inline void snd_als4k_gcr_write(struct snd_sb *sb,
226 enum als4k_gcr_t reg,
227 u32 val)
228 {
229 snd_als4k_gcr_write_addr(sb->alt_port, reg, val);
230 }
231
232 static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase,
233 enum als4k_gcr_t reg)
234 {
235 /* SPECS_PAGE: 37/38 */
236 snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
237 return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA);
238 }
239
240 static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg)
241 {
242 return snd_als4k_gcr_read_addr(sb->alt_port, reg);
243 }
244
245 enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */
246 ALS4K_CR0_SB_CONFIG = 0x00,
247 ALS4K_CR2_MISC_CONTROL = 0x02,
248 ALS4K_CR3_CONFIGURATION = 0x03,
249 ALS4K_CR17_FIFO_STATUS = 0x17,
250 ALS4K_CR18_ESP_MAJOR_VERSION = 0x18,
251 ALS4K_CR19_ESP_MINOR_VERSION = 0x19,
252 ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a,
253 ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c,
254 ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d,
255 ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */
256 ALS4K_CR3A_MISC_CONTROL = 0x3a,
257 ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */
258 ALS4K_CR3C_CRC32_BYTE1 = 0x3c,
259 ALS4K_CR3D_CRC32_BYTE2 = 0x3d,
260 ALS4K_CR3E_CRC32_BYTE3 = 0x3e,
261 };
262
263 enum als4k_cr0_t {
264 ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */
265 ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */
266 ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80,
267 };
268
269 static inline void snd_als4_cr_write(struct snd_sb *chip,
270 enum als4k_cr_t reg,
271 u8 data)
272 {
273 /* Control Register is reg | 0xc0 (bit 7, 6 set) on sbmixer_index
274 * NOTE: assumes chip->mixer_lock to be locked externally already!
275 * SPECS_PAGE: 6 */
276 snd_sbmixer_write(chip, reg | 0xc0, data);
277 }
278
279 static inline u8 snd_als4_cr_read(struct snd_sb *chip,
280 enum als4k_cr_t reg)
281 {
282 /* NOTE: assumes chip->mixer_lock to be locked externally already! */
283 return snd_sbmixer_read(chip, reg | 0xc0);
284 }
285
286
287
288 static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
289 {
290 if (!(chip->mode & SB_RATE_LOCK)) {
291 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
292 snd_sbdsp_command(chip, rate>>8);
293 snd_sbdsp_command(chip, rate);
294 }
295 }
296
297 static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
298 dma_addr_t addr, unsigned size)
299 {
300 /* SPECS_PAGE: 40 */
301 snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr);
302 snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1));
303 }
304
305 static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
306 dma_addr_t addr,
307 unsigned size)
308 {
309 /* SPECS_PAGE: 38 */
310 snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr);
311 snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT,
312 (size-1)|0x180000);
313 }
314
315 #define ALS4000_FORMAT_SIGNED (1<<0)
316 #define ALS4000_FORMAT_16BIT (1<<1)
317 #define ALS4000_FORMAT_STEREO (1<<2)
318
319 static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
320 {
321 int result;
322
323 result = 0;
324 if (snd_pcm_format_signed(runtime->format))
325 result |= ALS4000_FORMAT_SIGNED;
326 if (snd_pcm_format_physical_width(runtime->format) == 16)
327 result |= ALS4000_FORMAT_16BIT;
328 if (runtime->channels > 1)
329 result |= ALS4000_FORMAT_STEREO;
330 return result;
331 }
332
333 /* structure for setting up playback */
334 static const struct {
335 unsigned char dsp_cmd, dma_on, dma_off, format;
336 } playback_cmd_vals[]={
337 /* ALS4000_FORMAT_U8_MONO */
338 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
339 /* ALS4000_FORMAT_S8_MONO */
340 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
341 /* ALS4000_FORMAT_U16L_MONO */
342 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
343 /* ALS4000_FORMAT_S16L_MONO */
344 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
345 /* ALS4000_FORMAT_U8_STEREO */
346 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
347 /* ALS4000_FORMAT_S8_STEREO */
348 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
349 /* ALS4000_FORMAT_U16L_STEREO */
350 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
351 /* ALS4000_FORMAT_S16L_STEREO */
352 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
353 };
354 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
355
356 /* structure for setting up capture */
357 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
358 static const unsigned char capture_cmd_vals[]=
359 {
360 CMD_WIDTH8|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */
361 CMD_WIDTH8|CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */
362 CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */
363 CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */
364 CMD_WIDTH8|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */
365 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */
366 CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */
367 CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */
368 };
369 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
370
371 static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
372 struct snd_pcm_hw_params *hw_params)
373 {
374 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
375 }
376
377 static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
378 {
379 snd_pcm_lib_free_pages(substream);
380 return 0;
381 }
382
383 static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
384 {
385 struct snd_sb *chip = snd_pcm_substream_chip(substream);
386 struct snd_pcm_runtime *runtime = substream->runtime;
387 unsigned long size;
388 unsigned count;
389
390 chip->capture_format = snd_als4000_get_format(runtime);
391
392 size = snd_pcm_lib_buffer_bytes(substream);
393 count = snd_pcm_lib_period_bytes(substream);
394
395 if (chip->capture_format & ALS4000_FORMAT_16BIT)
396 count >>= 1;
397 count--;
398
399 spin_lock_irq(&chip->reg_lock);
400 snd_als4000_set_rate(chip, runtime->rate);
401 snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
402 spin_unlock_irq(&chip->reg_lock);
403 spin_lock_irq(&chip->mixer_lock);
404 snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
405 snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
406 spin_unlock_irq(&chip->mixer_lock);
407 return 0;
408 }
409
410 static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
411 {
412 struct snd_sb *chip = snd_pcm_substream_chip(substream);
413 struct snd_pcm_runtime *runtime = substream->runtime;
414 unsigned long size;
415 unsigned count;
416
417 chip->playback_format = snd_als4000_get_format(runtime);
418
419 size = snd_pcm_lib_buffer_bytes(substream);
420 count = snd_pcm_lib_period_bytes(substream);
421
422 if (chip->playback_format & ALS4000_FORMAT_16BIT)
423 count >>= 1;
424 count--;
425
426 /* FIXME: from second playback on, there's a lot more clicks and pops
427 * involved here than on first playback. Fiddling with
428 * tons of different settings didn't help (DMA, speaker on/off,
429 * reordering, ...). Something seems to get enabled on playback
430 * that I haven't found out how to disable again, which then causes
431 * the switching pops to reach the speakers the next time here. */
432 spin_lock_irq(&chip->reg_lock);
433 snd_als4000_set_rate(chip, runtime->rate);
434 snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
435
436 /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
437 /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
438 snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
439 snd_sbdsp_command(chip, playback_cmd(chip).format);
440 snd_sbdsp_command(chip, count & 0xff);
441 snd_sbdsp_command(chip, count >> 8);
442 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
443 spin_unlock_irq(&chip->reg_lock);
444
445 return 0;
446 }
447
448 static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
449 {
450 struct snd_sb *chip = snd_pcm_substream_chip(substream);
451 int result = 0;
452
453 /* FIXME race condition in here!!!
454 chip->mode non-atomic update gets consistently protected
455 by reg_lock always, _except_ for this place!!
456 Probably need to take reg_lock as outer (or inner??) lock, too.
457 (or serialize both lock operations? probably not, though... - racy?)
458 */
459 spin_lock(&chip->mixer_lock);
460 switch (cmd) {
461 case SNDRV_PCM_TRIGGER_START:
462 case SNDRV_PCM_TRIGGER_RESUME:
463 chip->mode |= SB_RATE_LOCK_CAPTURE;
464 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
465 capture_cmd(chip));
466 break;
467 case SNDRV_PCM_TRIGGER_STOP:
468 case SNDRV_PCM_TRIGGER_SUSPEND:
469 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
470 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
471 capture_cmd(chip));
472 break;
473 default:
474 result = -EINVAL;
475 break;
476 }
477 spin_unlock(&chip->mixer_lock);
478 return result;
479 }
480
481 static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
482 {
483 struct snd_sb *chip = snd_pcm_substream_chip(substream);
484 int result = 0;
485
486 spin_lock(&chip->reg_lock);
487 switch (cmd) {
488 case SNDRV_PCM_TRIGGER_START:
489 case SNDRV_PCM_TRIGGER_RESUME:
490 chip->mode |= SB_RATE_LOCK_PLAYBACK;
491 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
492 break;
493 case SNDRV_PCM_TRIGGER_STOP:
494 case SNDRV_PCM_TRIGGER_SUSPEND:
495 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
496 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
497 break;
498 default:
499 result = -EINVAL;
500 break;
501 }
502 spin_unlock(&chip->reg_lock);
503 return result;
504 }
505
506 static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
507 {
508 struct snd_sb *chip = snd_pcm_substream_chip(substream);
509 unsigned int result;
510
511 spin_lock(&chip->reg_lock);
512 result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
513 spin_unlock(&chip->reg_lock);
514 result &= 0xffff;
515 return bytes_to_frames( substream->runtime, result );
516 }
517
518 static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
519 {
520 struct snd_sb *chip = snd_pcm_substream_chip(substream);
521 unsigned result;
522
523 spin_lock(&chip->reg_lock);
524 result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
525 spin_unlock(&chip->reg_lock);
526 result &= 0xffff;
527 return bytes_to_frames( substream->runtime, result );
528 }
529
530 /* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
531 * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
532 * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
533 * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
534 * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
535 * could be optimized here to query/write one register only...
536 * And even if both registers need to be queried, then there's still the
537 * question of whether it's actually correct to ACK PCI IRQ before reading
538 * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
539 * SB IRQ status.
540 * (hmm, SPECS_PAGE: 38 mentions it the other way around!)
541 * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
542 * */
543 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
544 {
545 struct snd_sb *chip = dev_id;
546 unsigned pci_irqstatus;
547 unsigned sb_irqstatus;
548
549 /* find out which bit of the ALS4000 PCI block produced the interrupt,
550 SPECS_PAGE: 38, 5 */
551 pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
552 ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
553 if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
554 && (chip->playback_substream)) /* playback */
555 snd_pcm_period_elapsed(chip->playback_substream);
556 if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
557 && (chip->capture_substream)) /* capturing */
558 snd_pcm_period_elapsed(chip->capture_substream);
559 if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
560 && (chip->rmidi)) /* MPU401 interrupt */
561 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
562 /* ACK the PCI block IRQ */
563 snd_als4k_iobase_writeb(chip->alt_port,
564 ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
565
566 spin_lock(&chip->mixer_lock);
567 /* SPECS_PAGE: 20 */
568 sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
569 spin_unlock(&chip->mixer_lock);
570
571 if (sb_irqstatus & SB_IRQTYPE_8BIT)
572 snd_sb_ack_8bit(chip);
573 if (sb_irqstatus & SB_IRQTYPE_16BIT)
574 snd_sb_ack_16bit(chip);
575 if (sb_irqstatus & SB_IRQTYPE_MPUIN)
576 inb(chip->mpu_port);
577 if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
578 snd_als4k_iobase_readb(chip->alt_port,
579 ALS4K_IOB_16_ACK_FOR_CR1E);
580
581 /* printk(KERN_INFO "als4000: irq 0x%04x 0x%04x\n",
582 pci_irqstatus, sb_irqstatus); */
583
584 /* only ack the things we actually handled above */
585 return IRQ_RETVAL(
586 (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ|
587 ALS4K_IOB_0E_MPU_IRQ))
588 || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT|
589 SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA))
590 );
591 }
592
593 /*****************************************************************/
594
595 static struct snd_pcm_hardware snd_als4000_playback =
596 {
597 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
598 SNDRV_PCM_INFO_MMAP_VALID),
599 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
600 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
601 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
602 .rate_min = 4000,
603 .rate_max = 48000,
604 .channels_min = 1,
605 .channels_max = 2,
606 .buffer_bytes_max = 65536,
607 .period_bytes_min = 64,
608 .period_bytes_max = 65536,
609 .periods_min = 1,
610 .periods_max = 1024,
611 .fifo_size = 0
612 };
613
614 static struct snd_pcm_hardware snd_als4000_capture =
615 {
616 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
617 SNDRV_PCM_INFO_MMAP_VALID),
618 .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
619 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */
620 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
621 .rate_min = 4000,
622 .rate_max = 48000,
623 .channels_min = 1,
624 .channels_max = 2,
625 .buffer_bytes_max = 65536,
626 .period_bytes_min = 64,
627 .period_bytes_max = 65536,
628 .periods_min = 1,
629 .periods_max = 1024,
630 .fifo_size = 0
631 };
632
633 /*****************************************************************/
634
635 static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
636 {
637 struct snd_sb *chip = snd_pcm_substream_chip(substream);
638 struct snd_pcm_runtime *runtime = substream->runtime;
639
640 chip->playback_substream = substream;
641 runtime->hw = snd_als4000_playback;
642 return 0;
643 }
644
645 static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
646 {
647 struct snd_sb *chip = snd_pcm_substream_chip(substream);
648
649 chip->playback_substream = NULL;
650 snd_pcm_lib_free_pages(substream);
651 return 0;
652 }
653
654 static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
655 {
656 struct snd_sb *chip = snd_pcm_substream_chip(substream);
657 struct snd_pcm_runtime *runtime = substream->runtime;
658
659 chip->capture_substream = substream;
660 runtime->hw = snd_als4000_capture;
661 return 0;
662 }
663
664 static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
665 {
666 struct snd_sb *chip = snd_pcm_substream_chip(substream);
667
668 chip->capture_substream = NULL;
669 snd_pcm_lib_free_pages(substream);
670 return 0;
671 }
672
673 /******************************************************************/
674
675 static struct snd_pcm_ops snd_als4000_playback_ops = {
676 .open = snd_als4000_playback_open,
677 .close = snd_als4000_playback_close,
678 .ioctl = snd_pcm_lib_ioctl,
679 .hw_params = snd_als4000_hw_params,
680 .hw_free = snd_als4000_hw_free,
681 .prepare = snd_als4000_playback_prepare,
682 .trigger = snd_als4000_playback_trigger,
683 .pointer = snd_als4000_playback_pointer
684 };
685
686 static struct snd_pcm_ops snd_als4000_capture_ops = {
687 .open = snd_als4000_capture_open,
688 .close = snd_als4000_capture_close,
689 .ioctl = snd_pcm_lib_ioctl,
690 .hw_params = snd_als4000_hw_params,
691 .hw_free = snd_als4000_hw_free,
692 .prepare = snd_als4000_capture_prepare,
693 .trigger = snd_als4000_capture_trigger,
694 .pointer = snd_als4000_capture_pointer
695 };
696
697 static int __devinit snd_als4000_pcm(struct snd_sb *chip, int device)
698 {
699 struct snd_pcm *pcm;
700 int err;
701
702 err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
703 if (err < 0)
704 return err;
705 pcm->private_data = chip;
706 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
707 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
708 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
709
710 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
711 64*1024, 64*1024);
712
713 chip->pcm = pcm;
714
715 return 0;
716 }
717
718 /******************************************************************/
719
720 static void snd_als4000_set_addr(unsigned long iobase,
721 unsigned int sb_io,
722 unsigned int mpu_io,
723 unsigned int opl_io,
724 unsigned int game_io)
725 {
726 u32 cfg1 = 0;
727 u32 cfg2 = 0;
728
729 if (mpu_io > 0)
730 cfg2 |= (mpu_io | 1) << 16;
731 if (sb_io > 0)
732 cfg2 |= (sb_io | 1);
733 if (game_io > 0)
734 cfg1 |= (game_io | 1) << 16;
735 if (opl_io > 0)
736 cfg1 |= (opl_io | 1);
737 snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
738 snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
739 }
740
741 static void snd_als4000_configure(struct snd_sb *chip)
742 {
743 u8 tmp;
744 int i;
745
746 /* do some more configuration */
747 spin_lock_irq(&chip->mixer_lock);
748 tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
749 snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
750 tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
751 /* always select DMA channel 0, since we do not actually use DMA
752 * SPECS_PAGE: 19/20 */
753 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
754 snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
755 tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
756 spin_unlock_irq(&chip->mixer_lock);
757
758 spin_lock_irq(&chip->reg_lock);
759 /* enable interrupts */
760 snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
761 ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
762
763 /* SPECS_PAGE: 39 */
764 for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
765 snd_als4k_gcr_write(chip, i, 0);
766 /* enable burst mode to prevent dropouts during high PCI bus usage */
767 snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
768 (snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
769 spin_unlock_irq(&chip->reg_lock);
770 }
771
772 #ifdef SUPPORT_JOYSTICK
773 static int __devinit snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
774 {
775 struct gameport *gp;
776 struct resource *r;
777 int io_port;
778
779 if (joystick_port[dev] == 0)
780 return -ENODEV;
781
782 if (joystick_port[dev] == 1) { /* auto-detect */
783 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
784 r = request_region(io_port, 8, "ALS4000 gameport");
785 if (r)
786 break;
787 }
788 } else {
789 io_port = joystick_port[dev];
790 r = request_region(io_port, 8, "ALS4000 gameport");
791 }
792
793 if (!r) {
794 printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
795 return -EBUSY;
796 }
797
798 acard->gameport = gp = gameport_allocate_port();
799 if (!gp) {
800 printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
801 release_and_free_resource(r);
802 return -ENOMEM;
803 }
804
805 gameport_set_name(gp, "ALS4000 Gameport");
806 gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
807 gameport_set_dev_parent(gp, &acard->pci->dev);
808 gp->io = io_port;
809 gameport_set_port_data(gp, r);
810
811 /* Enable legacy joystick port */
812 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
813
814 gameport_register_port(acard->gameport);
815
816 return 0;
817 }
818
819 static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
820 {
821 if (acard->gameport) {
822 struct resource *r = gameport_get_port_data(acard->gameport);
823
824 gameport_unregister_port(acard->gameport);
825 acard->gameport = NULL;
826
827 /* disable joystick */
828 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
829
830 release_and_free_resource(r);
831 }
832 }
833 #else
834 static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
835 static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
836 #endif
837
838 static void snd_card_als4000_free( struct snd_card *card )
839 {
840 struct snd_card_als4000 *acard = card->private_data;
841
842 /* make sure that interrupts are disabled */
843 snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
844 /* free resources */
845 snd_als4000_free_gameport(acard);
846 pci_release_regions(acard->pci);
847 pci_disable_device(acard->pci);
848 }
849
850 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
851 const struct pci_device_id *pci_id)
852 {
853 static int dev;
854 struct snd_card *card;
855 struct snd_card_als4000 *acard;
856 unsigned long iobase;
857 struct snd_sb *chip;
858 struct snd_opl3 *opl3;
859 unsigned short word;
860 int err;
861
862 if (dev >= SNDRV_CARDS)
863 return -ENODEV;
864 if (!enable[dev]) {
865 dev++;
866 return -ENOENT;
867 }
868
869 /* enable PCI device */
870 if ((err = pci_enable_device(pci)) < 0) {
871 return err;
872 }
873 /* check, if we can restrict PCI DMA transfers to 24 bits */
874 if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 ||
875 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
876 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
877 pci_disable_device(pci);
878 return -ENXIO;
879 }
880
881 if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
882 pci_disable_device(pci);
883 return err;
884 }
885 iobase = pci_resource_start(pci, 0);
886
887 pci_read_config_word(pci, PCI_COMMAND, &word);
888 pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
889 pci_set_master(pci);
890
891 err = snd_card_create(index[dev], id[dev], THIS_MODULE,
892 sizeof(*acard) /* private_data: acard */,
893 &card);
894 if (err < 0) {
895 pci_release_regions(pci);
896 pci_disable_device(pci);
897 return err;
898 }
899
900 acard = card->private_data;
901 acard->pci = pci;
902 acard->iobase = iobase;
903 card->private_free = snd_card_als4000_free;
904
905 /* disable all legacy ISA stuff */
906 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
907
908 if ((err = snd_sbdsp_create(card,
909 iobase + ALS4K_IOB_10_ADLIB_ADDR0,
910 pci->irq,
911 /* internally registered as IRQF_SHARED in case of ALS4000 SB */
912 snd_als4000_interrupt,
913 -1,
914 -1,
915 SB_HW_ALS4000,
916 &chip)) < 0) {
917 goto out_err;
918 }
919 acard->chip = chip;
920
921 chip->pci = pci;
922 chip->alt_port = iobase;
923 snd_card_set_dev(card, &pci->dev);
924
925 snd_als4000_configure(chip);
926
927 strcpy(card->driver, "ALS4000");
928 strcpy(card->shortname, "Avance Logic ALS4000");
929 sprintf(card->longname, "%s at 0x%lx, irq %i",
930 card->shortname, chip->alt_port, chip->irq);
931
932 if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
933 iobase + ALS4K_IOB_30_MIDI_DATA,
934 MPU401_INFO_INTEGRATED,
935 pci->irq, 0, &chip->rmidi)) < 0) {
936 printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n",
937 iobase + ALS4K_IOB_30_MIDI_DATA);
938 goto out_err;
939 }
940 /* FIXME: ALS4000 has interesting MPU401 configuration features
941 * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
942 * (pass-thru / UART switching, fast MIDI clock, etc.),
943 * however there doesn't seem to be an ALSA API for this...
944 * SPECS_PAGE: 21 */
945
946 if ((err = snd_als4000_pcm(chip, 0)) < 0) {
947 goto out_err;
948 }
949 if ((err = snd_sbmixer_new(chip)) < 0) {
950 goto out_err;
951 }
952
953 if (snd_opl3_create(card,
954 iobase + ALS4K_IOB_10_ADLIB_ADDR0,
955 iobase + ALS4K_IOB_12_ADLIB_ADDR2,
956 OPL3_HW_AUTO, 1, &opl3) < 0) {
957 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx?\n",
958 iobase + ALS4K_IOB_10_ADLIB_ADDR0,
959 iobase + ALS4K_IOB_12_ADLIB_ADDR2);
960 } else {
961 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
962 goto out_err;
963 }
964 }
965
966 snd_als4000_create_gameport(acard, dev);
967
968 if ((err = snd_card_register(card)) < 0) {
969 goto out_err;
970 }
971 pci_set_drvdata(pci, card);
972 dev++;
973 err = 0;
974 goto out;
975
976 out_err:
977 snd_card_free(card);
978
979 out:
980 return err;
981 }
982
983 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
984 {
985 snd_card_free(pci_get_drvdata(pci));
986 pci_set_drvdata(pci, NULL);
987 }
988
989 #ifdef CONFIG_PM
990 static int snd_als4000_suspend(struct pci_dev *pci, pm_message_t state)
991 {
992 struct snd_card *card = pci_get_drvdata(pci);
993 struct snd_card_als4000 *acard = card->private_data;
994 struct snd_sb *chip = acard->chip;
995
996 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
997
998 snd_pcm_suspend_all(chip->pcm);
999 snd_sbmixer_suspend(chip);
1000
1001 pci_disable_device(pci);
1002 pci_save_state(pci);
1003 pci_set_power_state(pci, pci_choose_state(pci, state));
1004 return 0;
1005 }
1006
1007 static int snd_als4000_resume(struct pci_dev *pci)
1008 {
1009 struct snd_card *card = pci_get_drvdata(pci);
1010 struct snd_card_als4000 *acard = card->private_data;
1011 struct snd_sb *chip = acard->chip;
1012
1013 pci_set_power_state(pci, PCI_D0);
1014 pci_restore_state(pci);
1015 if (pci_enable_device(pci) < 0) {
1016 printk(KERN_ERR "als4000: pci_enable_device failed, "
1017 "disabling device\n");
1018 snd_card_disconnect(card);
1019 return -EIO;
1020 }
1021 pci_set_master(pci);
1022
1023 snd_als4000_configure(chip);
1024 snd_sbdsp_reset(chip);
1025 snd_sbmixer_resume(chip);
1026
1027 #ifdef SUPPORT_JOYSTICK
1028 if (acard->gameport)
1029 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
1030 #endif
1031
1032 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1033 return 0;
1034 }
1035 #endif /* CONFIG_PM */
1036
1037
1038 static struct pci_driver driver = {
1039 .name = "ALS4000",
1040 .id_table = snd_als4000_ids,
1041 .probe = snd_card_als4000_probe,
1042 .remove = __devexit_p(snd_card_als4000_remove),
1043 #ifdef CONFIG_PM
1044 .suspend = snd_als4000_suspend,
1045 .resume = snd_als4000_resume,
1046 #endif
1047 };
1048
1049 static int __init alsa_card_als4000_init(void)
1050 {
1051 return pci_register_driver(&driver);
1052 }
1053
1054 static void __exit alsa_card_als4000_exit(void)
1055 {
1056 pci_unregister_driver(&driver);
1057 }
1058
1059 module_init(alsa_card_als4000_init)
1060 module_exit(alsa_card_als4000_exit)
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