1 /****************************************************************************
2 
3    Copyright Echo Digital Audio Corporation (c) 1998 - 2004
4    All rights reserved
5    www.echoaudio.com
6 
7    This file is part of Echo Digital Audio's generic driver library.
8 
9    Echo Digital Audio's generic driver library is free software;
10    you can redistribute it and/or modify it under the terms of
11    the GNU General Public License as published by the Free Software
12    Foundation.
13 
14    This program is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU General Public License for more details.
18 
19    You should have received a copy of the GNU General Public License
20    along with this program; if not, write to the Free Software
21    Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22    MA  02111-1307, USA.
23 
24  ****************************************************************************
25 
26  Translation from C++ and adaptation for use in ALSA-Driver
27  were made by Giuliano Pochini <pochini@shiny.it>
28 
29  ****************************************************************************
30 
31 
32    Here's a block diagram of how most of the cards work:
33 
34                   +-----------+
35            record |           |<-------------------- Inputs
36           <-------|           |        |
37      PCI          | Transport |        |
38      bus          |  engine   |       \|/
39           ------->|           |    +-------+
40             play  |           |--->|monitor|-------> Outputs
41                   +-----------+    | mixer |
42                                    +-------+
43 
44    The lines going to and from the PCI bus represent "pipes".  A pipe performs
45    audio transport - moving audio data to and from buffers on the host via
46    bus mastering.
47 
48    The inputs and outputs on the right represent input and output "busses."
49    A bus is a physical, real connection to the outside world.  An example
50    of a bus would be the 1/4" analog connectors on the back of Layla or
51    an RCA S/PDIF connector.
52 
53    For most cards, there is a one-to-one correspondence between outputs
54    and busses; that is, each individual pipe is hard-wired to a single bus.
55 
56    Cards that work this way are Darla20, Gina20, Layla20, Darla24, Gina24,
57    Layla24, Mona, and Indigo.
58 
59 
60    Mia has a feature called "virtual outputs."
61 
62 
63                   +-----------+
64            record |           |<----------------------------- Inputs
65           <-------|           |                  |
66      PCI          | Transport |                  |
67      bus          |  engine   |                 \|/
68           ------->|           |   +------+   +-------+
69             play  |           |-->|vmixer|-->|monitor|-------> Outputs
70                   +-----------+   +------+   | mixer |
71                                              +-------+
72 
73 
74    Obviously, the difference here is the box labeled "vmixer."  Vmixer is
75    short for "virtual output mixer."  For Mia, pipes are *not* hard-wired
76    to a single bus; the vmixer lets you mix any pipe to any bus in any
77    combination.
78 
79    Note, however, that the left-hand side of the diagram is unchanged.
80    Transport works exactly the same way - the difference is in the mixer stage.
81 
82 
83    Pipes and busses are numbered starting at zero.
84 
85 
86 
87    Pipe index
88    ==========
89 
90    A number of calls in CEchoGals refer to a "pipe index".  A pipe index is
91    a unique number for a pipe that unambiguously refers to a playback or record
92    pipe.  Pipe indices are numbered starting with analog outputs, followed by
93    digital outputs, then analog inputs, then digital inputs.
94 
95    Take Gina24 as an example:
96 
97    Pipe index
98 
99    0-7            Analog outputs (0 .. FirstDigitalBusOut-1)
100    8-15           Digital outputs (FirstDigitalBusOut .. NumBussesOut-1)
101    16-17          Analog inputs
102    18-25          Digital inputs
103 
104 
105    You get the pipe index by calling CEchoGals::OpenAudio; the other transport
106    functions take the pipe index as a parameter.  If you need a pipe index for
107    some other reason, use the handy Makepipe_index method.
108 
109 
110    Some calls take a CChannelMask parameter; CChannelMask is a handy way to
111    group pipe indices.
112 
113 
114 
115    Digital mode switch
116    ===================
117 
118    Some cards (right now, Gina24, Layla24, and Mona) have a Digital Mode Switch
119    or DMS.  Cards with a DMS can be set to one of three mutually exclusive
120    digital modes: S/PDIF RCA, S/PDIF optical, or ADAT optical.
121 
122    This may create some confusion since ADAT optical is 8 channels wide and
123    S/PDIF is only two channels wide.  Gina24, Layla24, and Mona handle this
124    by acting as if they always have 8 digital outs and ins.  If you are in
125    either S/PDIF mode, the last 6 channels don't do anything - data sent
126    out these channels is thrown away and you will always record zeros.
127 
128    Note that with Gina24, Layla24, and Mona, sample rates above 50 kHz are
129    only available if you have the card configured for S/PDIF optical or S/PDIF
130    RCA.
131 
132 
133 
134    Double speed mode
135    =================
136 
137    Some of the cards support 88.2 kHz and 96 kHz sampling (Darla24, Gina24,
138    Layla24, Mona, Mia, and Indigo).  For these cards, the driver sometimes has
139    to worry about "double speed mode"; double speed mode applies whenever the
140    sampling rate is above 50 kHz.
141 
142    For instance, Mona and Layla24 support word clock sync.  However, they
143    actually support two different word clock modes - single speed (below
144    50 kHz) and double speed (above 50 kHz).  The hardware detects if a single
145    or double speed word clock signal is present; the generic code uses that
146    information to determine which mode to use.
147 
148    The generic code takes care of all this for you.
149 */
150 
151 
152 #ifndef _ECHOAUDIO_H_
153 #define _ECHOAUDIO_H_
154 
155 
156 #include "echoaudio_dsp.h"
157 
158 
159 
160 /***********************************************************************
161 
162 	PCI configuration space
163 
164 ***********************************************************************/
165 
166 /*
167  * PCI vendor ID and device IDs for the hardware
168  */
169 #define VENDOR_ID		0x1057
170 #define DEVICE_ID_56301		0x1801
171 #define DEVICE_ID_56361		0x3410
172 #define SUBVENDOR_ID		0xECC0
173 
174 
175 /*
176  * Valid Echo PCI subsystem card IDs
177  */
178 #define DARLA20			0x0010
179 #define GINA20			0x0020
180 #define LAYLA20			0x0030
181 #define DARLA24			0x0040
182 #define GINA24			0x0050
183 #define LAYLA24			0x0060
184 #define MONA			0x0070
185 #define MIA			0x0080
186 #define INDIGO			0x0090
187 #define INDIGO_IO		0x00a0
188 #define INDIGO_DJ		0x00b0
189 #define DC8			0x00c0
190 #define INDIGO_IOX		0x00d0
191 #define INDIGO_DJX		0x00e0
192 #define ECHO3G			0x0100
193 
194 
195 /************************************************************************
196 
197 	Array sizes and so forth
198 
199 ***********************************************************************/
200 
201 /*
202  * Sizes
203  */
204 #define ECHO_MAXAUDIOINPUTS	32	/* Max audio input channels */
205 #define ECHO_MAXAUDIOOUTPUTS	32	/* Max audio output channels */
206 #define ECHO_MAXAUDIOPIPES	32	/* Max number of input and output
207 					 * pipes */
208 #define E3G_MAX_OUTPUTS		16
209 #define ECHO_MAXMIDIJACKS	1	/* Max MIDI ports */
210 #define ECHO_MIDI_QUEUE_SZ 	512	/* Max MIDI input queue entries */
211 #define ECHO_MTC_QUEUE_SZ	32	/* Max MIDI time code input queue
212 					 * entries */
213 
214 /*
215  * MIDI activity indicator timeout
216  */
217 #define MIDI_ACTIVITY_TIMEOUT_USEC	200000
218 
219 
220 /****************************************************************************
221 
222    Clocks
223 
224 *****************************************************************************/
225 
226 /*
227  * Clock numbers
228  */
229 #define ECHO_CLOCK_INTERNAL		0
230 #define ECHO_CLOCK_WORD			1
231 #define ECHO_CLOCK_SUPER		2
232 #define ECHO_CLOCK_SPDIF		3
233 #define ECHO_CLOCK_ADAT			4
234 #define ECHO_CLOCK_ESYNC		5
235 #define ECHO_CLOCK_ESYNC96		6
236 #define ECHO_CLOCK_MTC			7
237 #define ECHO_CLOCK_NUMBER		8
238 #define ECHO_CLOCKS			0xffff
239 
240 /*
241  * Clock bit numbers - used to report capabilities and whatever clocks
242  * are being detected dynamically.
243  */
244 #define ECHO_CLOCK_BIT_INTERNAL		(1 << ECHO_CLOCK_INTERNAL)
245 #define ECHO_CLOCK_BIT_WORD		(1 << ECHO_CLOCK_WORD)
246 #define ECHO_CLOCK_BIT_SUPER		(1 << ECHO_CLOCK_SUPER)
247 #define ECHO_CLOCK_BIT_SPDIF		(1 << ECHO_CLOCK_SPDIF)
248 #define ECHO_CLOCK_BIT_ADAT		(1 << ECHO_CLOCK_ADAT)
249 #define ECHO_CLOCK_BIT_ESYNC		(1 << ECHO_CLOCK_ESYNC)
250 #define ECHO_CLOCK_BIT_ESYNC96		(1 << ECHO_CLOCK_ESYNC96)
251 #define ECHO_CLOCK_BIT_MTC		(1<<ECHO_CLOCK_MTC)
252 
253 
254 /***************************************************************************
255 
256    Digital modes
257 
258 ****************************************************************************/
259 
260 /*
261  * Digital modes for Mona, Layla24, and Gina24
262  */
263 #define DIGITAL_MODE_NONE			0xFF
264 #define DIGITAL_MODE_SPDIF_RCA			0
265 #define DIGITAL_MODE_SPDIF_OPTICAL		1
266 #define DIGITAL_MODE_ADAT			2
267 #define DIGITAL_MODE_SPDIF_CDROM		3
268 #define DIGITAL_MODES				4
269 
270 /*
271  * Digital mode capability masks
272  */
273 #define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA	(1 << DIGITAL_MODE_SPDIF_RCA)
274 #define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL	(1 << DIGITAL_MODE_SPDIF_OPTICAL)
275 #define ECHOCAPS_HAS_DIGITAL_MODE_ADAT		(1 << DIGITAL_MODE_ADAT)
276 #define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_CDROM	(1 << DIGITAL_MODE_SPDIF_CDROM)
277 
278 
279 #define EXT_3GBOX_NC			0x01	/* 3G box not connected */
280 #define EXT_3GBOX_NOT_SET		0x02	/* 3G box not detected yet */
281 
282 
283 #define ECHOGAIN_MUTED		(-128)	/* Minimum possible gain */
284 #define ECHOGAIN_MINOUT		(-128)	/* Min output gain (dB) */
285 #define ECHOGAIN_MAXOUT		(6)	/* Max output gain (dB) */
286 #define ECHOGAIN_MININP		(-50)	/* Min input gain (0.5 dB) */
287 #define ECHOGAIN_MAXINP		(50)	/* Max input gain (0.5 dB) */
288 
289 #define PIPE_STATE_STOPPED	0	/* Pipe has been reset */
290 #define PIPE_STATE_PAUSED	1	/* Pipe has been stopped */
291 #define PIPE_STATE_STARTED	2	/* Pipe has been started */
292 #define PIPE_STATE_PENDING	3	/* Pipe has pending start */
293 
294 
295 
296 struct audiopipe {
297 	volatile __le32 *dma_counter;	/* Commpage register that contains
298 					 * the current dma position
299 					 * (lower 32 bits only)
300 					 */
301 	u32 last_period;                /* Counter position last time a
302 					 * period elapsed
303 					 */
304 	u32 last_counter;		/* Used exclusively by pcm_pointer
305 					 * under PCM core locks.
306 					 * The last position, which is used
307 					 * to compute...
308 					 */
309 	u32 position;			/* ...the number of bytes tranferred
310 					 * by the DMA engine, modulo the
311 					 * buffer size
312 					 */
313 	short index;			/* Index of the first channel or <0
314 					 * if hw is not configured yet
315 					 */
316 	short interleave;
317 	struct snd_dma_buffer sgpage;	/* Room for the scatter-gather list */
318 	struct snd_pcm_hardware hw;
319 	struct snd_pcm_hw_constraint_list constr;
320 	short sglist_head;
321 	char state;			/* pipe state */
322 };
323 
324 
325 struct audioformat {
326 	u8 interleave;			/* How the data is arranged in memory:
327 					 * mono = 1, stereo = 2, ...
328 					 */
329 	u8 bits_per_sample;		/* 8, 16, 24, 32 (24 bits left aligned) */
330 	char mono_to_stereo;		/* Only used if interleave is 1 and
331 					 * if this is an output pipe.
332 					 */
333 	char data_are_bigendian;	/* 1 = big endian, 0 = little endian */
334 };
335 
336 
337 struct echoaudio {
338 	spinlock_t lock;
339 	struct snd_pcm_substream *substream[DSP_MAXPIPES];
340 	struct mutex mode_mutex;
341 	u16 num_digital_modes, digital_mode_list[6];
342 	u16 num_clock_sources, clock_source_list[10];
343 	unsigned int opencount;  /* protected by mode_mutex */
344 	struct snd_kcontrol *clock_src_ctl;
345 	struct snd_pcm *analog_pcm, *digital_pcm;
346 	struct snd_card *card;
347 	const char *card_name;
348 	struct pci_dev *pci;
349 	unsigned long dsp_registers_phys;
350 	struct resource *iores;
351 	struct snd_dma_buffer *commpage_dma_buf;
352 	int irq;
353 #ifdef ECHOCARD_HAS_MIDI
354 	struct snd_rawmidi *rmidi;
355 	struct snd_rawmidi_substream *midi_in, *midi_out;
356 #endif
357 	struct timer_list timer;
358 	char tinuse;				/* Timer in use */
359 	char midi_full;				/* MIDI output buffer is full */
360 	char can_set_rate;                      /* protected by mode_mutex */
361 	char rate_set;                          /* protected by mode_mutex */
362 
363 	/* This stuff is used mainly by the lowlevel code */
364 	struct comm_page *comm_page;	/* Virtual address of the memory
365 					 * seen by DSP
366 					 */
367 	u32 pipe_alloc_mask;		/* Bitmask of allocated pipes */
368 	u32 pipe_cyclic_mask;		/* Bitmask of pipes with cyclic
369 					 * buffers
370 					 */
371 	u32 sample_rate;		/* Card sample rate in Hz */
372 	u8 digital_mode;		/* Current digital mode
373 					 * (see DIGITAL_MODE_*)
374 					 */
375 	u8 spdif_status;		/* Gina20, Darla20, Darla24 - only */
376 	u8 clock_state;			/* Gina20, Darla20, Darla24 - only */
377 	u8 input_clock;			/* Currently selected sample clock
378 					 * source
379 					 */
380 	u8 output_clock;		/* Layla20 only */
381 	char meters_enabled;		/* VU-meters status */
382 	char asic_loaded;		/* Set true when ASIC loaded */
383 	char bad_board;			/* Set true if DSP won't load */
384 	char professional_spdif;	/* 0 = consumer; 1 = professional */
385 	char non_audio_spdif;		/* 3G - only */
386 	char digital_in_automute;	/* Gina24, Layla24, Mona - only */
387 	char has_phantom_power;
388 	char hasnt_input_nominal_level;	/* Gina3G */
389 	char phantom_power;		/* Gina3G - only */
390 	char has_midi;
391 	char midi_input_enabled;
392 
393 #ifdef ECHOCARD_ECHO3G
394 	/* External module -dependent pipe and bus indexes */
395 	char px_digital_out, px_analog_in, px_digital_in, px_num;
396 	char bx_digital_out, bx_analog_in, bx_digital_in, bx_num;
397 #endif
398 
399 	char nominal_level[ECHO_MAXAUDIOPIPES];	/* True == -10dBV
400 						 * False == +4dBu */
401 	s8 input_gain[ECHO_MAXAUDIOINPUTS];	/* Input level -50..+50
402 						 * unit is 0.5dB */
403 	s8 output_gain[ECHO_MAXAUDIOOUTPUTS];	/* Output level -128..+6 dB
404 						 * (-128=muted) */
405 	s8 monitor_gain[ECHO_MAXAUDIOOUTPUTS][ECHO_MAXAUDIOINPUTS];
406 		/* -128..+6 dB */
407 	s8 vmixer_gain[ECHO_MAXAUDIOOUTPUTS][ECHO_MAXAUDIOOUTPUTS];
408 		/* -128..+6 dB */
409 
410 	u16 digital_modes;		/* Bitmask of supported modes
411 					 * (see ECHOCAPS_HAS_DIGITAL_MODE_*) */
412 	u16 input_clock_types;		/* Suppoted input clock types */
413 	u16 output_clock_types;		/* Suppoted output clock types -
414 					 * Layla20 only */
415 	u16 device_id, subdevice_id;
416 	u16 *dsp_code;			/* Current DSP code loaded,
417 					 * NULL if nothing loaded */
418 	short dsp_code_to_load;		/* DSP code to load */
419 	short asic_code;		/* Current ASIC code */
420 	u32 comm_page_phys;			/* Physical address of the
421 						 * memory seen by DSP */
422 	u32 __iomem *dsp_registers;		/* DSP's register base */
423 	u32 active_mask;			/* Chs. active mask or
424 						 * punks out */
425 #ifdef CONFIG_PM_SLEEP
426 	const struct firmware *fw_cache[8];	/* Cached firmwares */
427 #endif
428 
429 #ifdef ECHOCARD_HAS_MIDI
430 	u16 mtc_state;				/* State for MIDI input parsing state machine */
431 	u8 midi_buffer[MIDI_IN_BUFFER_SIZE];
432 #endif
433 };
434 
435 
436 static int init_dsp_comm_page(struct echoaudio *chip);
437 static int init_line_levels(struct echoaudio *chip);
438 static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe);
439 static int load_firmware(struct echoaudio *chip);
440 static int wait_handshake(struct echoaudio *chip);
441 static int send_vector(struct echoaudio *chip, u32 command);
442 static int get_firmware(const struct firmware **fw_entry,
443 			struct echoaudio *chip, const short fw_index);
444 static void free_firmware(const struct firmware *fw_entry,
445 			  struct echoaudio *chip);
446 
447 #ifdef ECHOCARD_HAS_MIDI
448 static int enable_midi_input(struct echoaudio *chip, char enable);
449 static void snd_echo_midi_output_trigger(
450 			struct snd_rawmidi_substream *substream, int up);
451 static int midi_service_irq(struct echoaudio *chip);
452 static int snd_echo_midi_create(struct snd_card *card,
453 				struct echoaudio *chip);
454 #endif
455 
456 
clear_handshake(struct echoaudio * chip)457 static inline void clear_handshake(struct echoaudio *chip)
458 {
459 	chip->comm_page->handshake = 0;
460 }
461 
get_dsp_register(struct echoaudio * chip,u32 index)462 static inline u32 get_dsp_register(struct echoaudio *chip, u32 index)
463 {
464 	return readl(&chip->dsp_registers[index]);
465 }
466 
set_dsp_register(struct echoaudio * chip,u32 index,u32 value)467 static inline void set_dsp_register(struct echoaudio *chip, u32 index,
468 				    u32 value)
469 {
470 	writel(value, &chip->dsp_registers[index]);
471 }
472 
473 
474 /* Pipe and bus indexes. PX_* and BX_* are defined as chip->px_* and chip->bx_*
475 for 3G cards because they depend on the external box. They are integer
476 constants for all other cards.
477 Never use those defines directly, use the following functions instead. */
478 
px_digital_out(const struct echoaudio * chip)479 static inline int px_digital_out(const struct echoaudio *chip)
480 {
481 	return PX_DIGITAL_OUT;
482 }
483 
px_analog_in(const struct echoaudio * chip)484 static inline int px_analog_in(const struct echoaudio *chip)
485 {
486 	return PX_ANALOG_IN;
487 }
488 
px_digital_in(const struct echoaudio * chip)489 static inline int px_digital_in(const struct echoaudio *chip)
490 {
491 	return PX_DIGITAL_IN;
492 }
493 
px_num(const struct echoaudio * chip)494 static inline int px_num(const struct echoaudio *chip)
495 {
496 	return PX_NUM;
497 }
498 
bx_digital_out(const struct echoaudio * chip)499 static inline int bx_digital_out(const struct echoaudio *chip)
500 {
501 	return BX_DIGITAL_OUT;
502 }
503 
bx_analog_in(const struct echoaudio * chip)504 static inline int bx_analog_in(const struct echoaudio *chip)
505 {
506 	return BX_ANALOG_IN;
507 }
508 
bx_digital_in(const struct echoaudio * chip)509 static inline int bx_digital_in(const struct echoaudio *chip)
510 {
511 	return BX_DIGITAL_IN;
512 }
513 
bx_num(const struct echoaudio * chip)514 static inline int bx_num(const struct echoaudio *chip)
515 {
516 	return BX_NUM;
517 }
518 
num_pipes_out(const struct echoaudio * chip)519 static inline int num_pipes_out(const struct echoaudio *chip)
520 {
521 	return px_analog_in(chip);
522 }
523 
num_pipes_in(const struct echoaudio * chip)524 static inline int num_pipes_in(const struct echoaudio *chip)
525 {
526 	return px_num(chip) - px_analog_in(chip);
527 }
528 
num_busses_out(const struct echoaudio * chip)529 static inline int num_busses_out(const struct echoaudio *chip)
530 {
531 	return bx_analog_in(chip);
532 }
533 
num_busses_in(const struct echoaudio * chip)534 static inline int num_busses_in(const struct echoaudio *chip)
535 {
536 	return bx_num(chip) - bx_analog_in(chip);
537 }
538 
num_analog_busses_out(const struct echoaudio * chip)539 static inline int num_analog_busses_out(const struct echoaudio *chip)
540 {
541 	return bx_digital_out(chip);
542 }
543 
num_analog_busses_in(const struct echoaudio * chip)544 static inline int num_analog_busses_in(const struct echoaudio *chip)
545 {
546 	return bx_digital_in(chip) - bx_analog_in(chip);
547 }
548 
num_digital_busses_out(const struct echoaudio * chip)549 static inline int num_digital_busses_out(const struct echoaudio *chip)
550 {
551 	return num_busses_out(chip) - num_analog_busses_out(chip);
552 }
553 
num_digital_busses_in(const struct echoaudio * chip)554 static inline int num_digital_busses_in(const struct echoaudio *chip)
555 {
556 	return num_busses_in(chip) - num_analog_busses_in(chip);
557 }
558 
559 /* The monitor array is a one-dimensional array; compute the offset
560  * into the array */
monitor_index(const struct echoaudio * chip,int out,int in)561 static inline int monitor_index(const struct echoaudio *chip, int out, int in)
562 {
563 	return out * num_busses_in(chip) + in;
564 }
565 
566 #endif /* _ECHOAUDIO_H_ */
567