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1 | /* |
2 | * usbmidi.c - ALSA USB MIDI driver |
3 | * |
4 | * Copyright (c) 2002-2009 Clemens Ladisch |
5 | * All rights reserved. |
6 | * |
7 | * Based on the OSS usb-midi driver by NAGANO Daisuke, |
8 | * NetBSD's umidi driver by Takuya SHIOZAKI, |
9 | * the "USB Device Class Definition for MIDI Devices" by Roland |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions, and the following disclaimer, |
16 | * without modification. |
17 | * 2. The name of the author may not be used to endorse or promote products |
18 | * derived from this software without specific prior written permission. |
19 | * |
20 | * Alternatively, this software may be distributed and/or modified under the |
21 | * terms of the GNU General Public License as published by the Free Software |
22 | * Foundation; either version 2 of the License, or (at your option) any later |
23 | * version. |
24 | * |
25 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
29 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
35 | * SUCH DAMAGE. |
36 | */ |
37 | |
38 | #include <linux/kernel.h> |
39 | #include <linux/types.h> |
40 | #include <linux/bitops.h> |
41 | #include <linux/interrupt.h> |
42 | #include <linux/spinlock.h> |
43 | #include <linux/string.h> |
44 | #include <linux/init.h> |
45 | #include <linux/slab.h> |
46 | #include <linux/timer.h> |
47 | #include <linux/usb.h> |
48 | #include <linux/wait.h> |
49 | #include <linux/usb/audio.h> |
50 | |
51 | #include <sound/core.h> |
52 | #include <sound/control.h> |
53 | #include <sound/rawmidi.h> |
54 | #include <sound/asequencer.h> |
55 | #include "usbaudio.h" |
56 | |
57 | |
58 | /* |
59 | * define this to log all USB packets |
60 | */ |
61 | /* #define DUMP_PACKETS */ |
62 | |
63 | /* |
64 | * how long to wait after some USB errors, so that khubd can disconnect() us |
65 | * without too many spurious errors |
66 | */ |
67 | #define ERROR_DELAY_JIFFIES (HZ / 10) |
68 | |
69 | #define OUTPUT_URBS 7 |
70 | #define INPUT_URBS 7 |
71 | |
72 | |
73 | MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); |
74 | MODULE_DESCRIPTION("USB Audio/MIDI helper module"); |
75 | MODULE_LICENSE("Dual BSD/GPL"); |
76 | |
77 | |
78 | struct usb_ms_header_descriptor { |
79 | __u8 bLength; |
80 | __u8 bDescriptorType; |
81 | __u8 bDescriptorSubtype; |
82 | __u8 bcdMSC[2]; |
83 | __le16 wTotalLength; |
84 | } __attribute__ ((packed)); |
85 | |
86 | struct usb_ms_endpoint_descriptor { |
87 | __u8 bLength; |
88 | __u8 bDescriptorType; |
89 | __u8 bDescriptorSubtype; |
90 | __u8 bNumEmbMIDIJack; |
91 | __u8 baAssocJackID[0]; |
92 | } __attribute__ ((packed)); |
93 | |
94 | struct snd_usb_midi_in_endpoint; |
95 | struct snd_usb_midi_out_endpoint; |
96 | struct snd_usb_midi_endpoint; |
97 | |
98 | struct usb_protocol_ops { |
99 | void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int); |
100 | void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb); |
101 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); |
102 | void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*); |
103 | void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*); |
104 | }; |
105 | |
106 | struct snd_usb_midi { |
107 | struct usb_device *dev; |
108 | struct snd_card *card; |
109 | struct usb_interface *iface; |
110 | const struct snd_usb_audio_quirk *quirk; |
111 | struct snd_rawmidi *rmidi; |
112 | struct usb_protocol_ops* usb_protocol_ops; |
113 | struct list_head list; |
114 | struct timer_list error_timer; |
115 | spinlock_t disc_lock; |
116 | struct mutex mutex; |
117 | u32 usb_id; |
118 | int next_midi_device; |
119 | |
120 | struct snd_usb_midi_endpoint { |
121 | struct snd_usb_midi_out_endpoint *out; |
122 | struct snd_usb_midi_in_endpoint *in; |
123 | } endpoints[MIDI_MAX_ENDPOINTS]; |
124 | unsigned long input_triggered; |
125 | unsigned int opened; |
126 | unsigned char disconnected; |
127 | |
128 | struct snd_kcontrol *roland_load_ctl; |
129 | }; |
130 | |
131 | struct snd_usb_midi_out_endpoint { |
132 | struct snd_usb_midi* umidi; |
133 | struct out_urb_context { |
134 | struct urb *urb; |
135 | struct snd_usb_midi_out_endpoint *ep; |
136 | } urbs[OUTPUT_URBS]; |
137 | unsigned int active_urbs; |
138 | unsigned int drain_urbs; |
139 | int max_transfer; /* size of urb buffer */ |
140 | struct tasklet_struct tasklet; |
141 | unsigned int next_urb; |
142 | spinlock_t buffer_lock; |
143 | |
144 | struct usbmidi_out_port { |
145 | struct snd_usb_midi_out_endpoint* ep; |
146 | struct snd_rawmidi_substream *substream; |
147 | int active; |
148 | uint8_t cable; /* cable number << 4 */ |
149 | uint8_t state; |
150 | #define STATE_UNKNOWN 0 |
151 | #define STATE_1PARAM 1 |
152 | #define STATE_2PARAM_1 2 |
153 | #define STATE_2PARAM_2 3 |
154 | #define STATE_SYSEX_0 4 |
155 | #define STATE_SYSEX_1 5 |
156 | #define STATE_SYSEX_2 6 |
157 | uint8_t data[2]; |
158 | } ports[0x10]; |
159 | int current_port; |
160 | |
161 | wait_queue_head_t drain_wait; |
162 | }; |
163 | |
164 | struct snd_usb_midi_in_endpoint { |
165 | struct snd_usb_midi* umidi; |
166 | struct urb* urbs[INPUT_URBS]; |
167 | struct usbmidi_in_port { |
168 | struct snd_rawmidi_substream *substream; |
169 | u8 running_status_length; |
170 | } ports[0x10]; |
171 | u8 seen_f5; |
172 | u8 error_resubmit; |
173 | int current_port; |
174 | }; |
175 | |
176 | static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep); |
177 | |
178 | static const uint8_t snd_usbmidi_cin_length[] = { |
179 | 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 |
180 | }; |
181 | |
182 | /* |
183 | * Submits the URB, with error handling. |
184 | */ |
185 | static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags) |
186 | { |
187 | int err = usb_submit_urb(urb, flags); |
188 | if (err < 0 && err != -ENODEV) |
189 | snd_printk(KERN_ERR "usb_submit_urb: %d\n", err); |
190 | return err; |
191 | } |
192 | |
193 | /* |
194 | * Error handling for URB completion functions. |
195 | */ |
196 | static int snd_usbmidi_urb_error(int status) |
197 | { |
198 | switch (status) { |
199 | /* manually unlinked, or device gone */ |
200 | case -ENOENT: |
201 | case -ECONNRESET: |
202 | case -ESHUTDOWN: |
203 | case -ENODEV: |
204 | return -ENODEV; |
205 | /* errors that might occur during unplugging */ |
206 | case -EPROTO: |
207 | case -ETIME: |
208 | case -EILSEQ: |
209 | return -EIO; |
210 | default: |
211 | snd_printk(KERN_ERR "urb status %d\n", status); |
212 | return 0; /* continue */ |
213 | } |
214 | } |
215 | |
216 | /* |
217 | * Receives a chunk of MIDI data. |
218 | */ |
219 | static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx, |
220 | uint8_t* data, int length) |
221 | { |
222 | struct usbmidi_in_port* port = &ep->ports[portidx]; |
223 | |
224 | if (!port->substream) { |
225 | snd_printd("unexpected port %d!\n", portidx); |
226 | return; |
227 | } |
228 | if (!test_bit(port->substream->number, &ep->umidi->input_triggered)) |
229 | return; |
230 | snd_rawmidi_receive(port->substream, data, length); |
231 | } |
232 | |
233 | #ifdef DUMP_PACKETS |
234 | static void dump_urb(const char *type, const u8 *data, int length) |
235 | { |
236 | snd_printk(KERN_DEBUG "%s packet: [", type); |
237 | for (; length > 0; ++data, --length) |
238 | printk(" %02x", *data); |
239 | printk(" ]\n"); |
240 | } |
241 | #else |
242 | #define dump_urb(type, data, length) /* nothing */ |
243 | #endif |
244 | |
245 | /* |
246 | * Processes the data read from the device. |
247 | */ |
248 | static void snd_usbmidi_in_urb_complete(struct urb* urb) |
249 | { |
250 | struct snd_usb_midi_in_endpoint* ep = urb->context; |
251 | |
252 | if (urb->status == 0) { |
253 | dump_urb("received", urb->transfer_buffer, urb->actual_length); |
254 | ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, |
255 | urb->actual_length); |
256 | } else { |
257 | int err = snd_usbmidi_urb_error(urb->status); |
258 | if (err < 0) { |
259 | if (err != -ENODEV) { |
260 | ep->error_resubmit = 1; |
261 | mod_timer(&ep->umidi->error_timer, |
262 | jiffies + ERROR_DELAY_JIFFIES); |
263 | } |
264 | return; |
265 | } |
266 | } |
267 | |
268 | urb->dev = ep->umidi->dev; |
269 | snd_usbmidi_submit_urb(urb, GFP_ATOMIC); |
270 | } |
271 | |
272 | static void snd_usbmidi_out_urb_complete(struct urb* urb) |
273 | { |
274 | struct out_urb_context *context = urb->context; |
275 | struct snd_usb_midi_out_endpoint* ep = context->ep; |
276 | unsigned int urb_index; |
277 | |
278 | spin_lock(&ep->buffer_lock); |
279 | urb_index = context - ep->urbs; |
280 | ep->active_urbs &= ~(1 << urb_index); |
281 | if (unlikely(ep->drain_urbs)) { |
282 | ep->drain_urbs &= ~(1 << urb_index); |
283 | wake_up(&ep->drain_wait); |
284 | } |
285 | spin_unlock(&ep->buffer_lock); |
286 | if (urb->status < 0) { |
287 | int err = snd_usbmidi_urb_error(urb->status); |
288 | if (err < 0) { |
289 | if (err != -ENODEV) |
290 | mod_timer(&ep->umidi->error_timer, |
291 | jiffies + ERROR_DELAY_JIFFIES); |
292 | return; |
293 | } |
294 | } |
295 | snd_usbmidi_do_output(ep); |
296 | } |
297 | |
298 | /* |
299 | * This is called when some data should be transferred to the device |
300 | * (from one or more substreams). |
301 | */ |
302 | static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep) |
303 | { |
304 | unsigned int urb_index; |
305 | struct urb* urb; |
306 | unsigned long flags; |
307 | |
308 | spin_lock_irqsave(&ep->buffer_lock, flags); |
309 | if (ep->umidi->disconnected) { |
310 | spin_unlock_irqrestore(&ep->buffer_lock, flags); |
311 | return; |
312 | } |
313 | |
314 | urb_index = ep->next_urb; |
315 | for (;;) { |
316 | if (!(ep->active_urbs & (1 << urb_index))) { |
317 | urb = ep->urbs[urb_index].urb; |
318 | urb->transfer_buffer_length = 0; |
319 | ep->umidi->usb_protocol_ops->output(ep, urb); |
320 | if (urb->transfer_buffer_length == 0) |
321 | break; |
322 | |
323 | dump_urb("sending", urb->transfer_buffer, |
324 | urb->transfer_buffer_length); |
325 | urb->dev = ep->umidi->dev; |
326 | if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0) |
327 | break; |
328 | ep->active_urbs |= 1 << urb_index; |
329 | } |
330 | if (++urb_index >= OUTPUT_URBS) |
331 | urb_index = 0; |
332 | if (urb_index == ep->next_urb) |
333 | break; |
334 | } |
335 | ep->next_urb = urb_index; |
336 | spin_unlock_irqrestore(&ep->buffer_lock, flags); |
337 | } |
338 | |
339 | static void snd_usbmidi_out_tasklet(unsigned long data) |
340 | { |
341 | struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data; |
342 | |
343 | snd_usbmidi_do_output(ep); |
344 | } |
345 | |
346 | /* called after transfers had been interrupted due to some USB error */ |
347 | static void snd_usbmidi_error_timer(unsigned long data) |
348 | { |
349 | struct snd_usb_midi *umidi = (struct snd_usb_midi *)data; |
350 | unsigned int i, j; |
351 | |
352 | spin_lock(&umidi->disc_lock); |
353 | if (umidi->disconnected) { |
354 | spin_unlock(&umidi->disc_lock); |
355 | return; |
356 | } |
357 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
358 | struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in; |
359 | if (in && in->error_resubmit) { |
360 | in->error_resubmit = 0; |
361 | for (j = 0; j < INPUT_URBS; ++j) { |
362 | in->urbs[j]->dev = umidi->dev; |
363 | snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC); |
364 | } |
365 | } |
366 | if (umidi->endpoints[i].out) |
367 | snd_usbmidi_do_output(umidi->endpoints[i].out); |
368 | } |
369 | spin_unlock(&umidi->disc_lock); |
370 | } |
371 | |
372 | /* helper function to send static data that may not DMA-able */ |
373 | static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep, |
374 | const void *data, int len) |
375 | { |
376 | int err = 0; |
377 | void *buf = kmemdup(data, len, GFP_KERNEL); |
378 | if (!buf) |
379 | return -ENOMEM; |
380 | dump_urb("sending", buf, len); |
381 | if (ep->urbs[0].urb) |
382 | err = usb_bulk_msg(ep->umidi->dev, ep->urbs[0].urb->pipe, |
383 | buf, len, NULL, 250); |
384 | kfree(buf); |
385 | return err; |
386 | } |
387 | |
388 | /* |
389 | * Standard USB MIDI protocol: see the spec. |
390 | * Midiman protocol: like the standard protocol, but the control byte is the |
391 | * fourth byte in each packet, and uses length instead of CIN. |
392 | */ |
393 | |
394 | static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep, |
395 | uint8_t* buffer, int buffer_length) |
396 | { |
397 | int i; |
398 | |
399 | for (i = 0; i + 3 < buffer_length; i += 4) |
400 | if (buffer[i] != 0) { |
401 | int cable = buffer[i] >> 4; |
402 | int length = snd_usbmidi_cin_length[buffer[i] & 0x0f]; |
403 | snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); |
404 | } |
405 | } |
406 | |
407 | static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep, |
408 | uint8_t* buffer, int buffer_length) |
409 | { |
410 | int i; |
411 | |
412 | for (i = 0; i + 3 < buffer_length; i += 4) |
413 | if (buffer[i + 3] != 0) { |
414 | int port = buffer[i + 3] >> 4; |
415 | int length = buffer[i + 3] & 3; |
416 | snd_usbmidi_input_data(ep, port, &buffer[i], length); |
417 | } |
418 | } |
419 | |
420 | /* |
421 | * Buggy M-Audio device: running status on input results in a packet that has |
422 | * the data bytes but not the status byte and that is marked with CIN 4. |
423 | */ |
424 | static void snd_usbmidi_maudio_broken_running_status_input( |
425 | struct snd_usb_midi_in_endpoint* ep, |
426 | uint8_t* buffer, int buffer_length) |
427 | { |
428 | int i; |
429 | |
430 | for (i = 0; i + 3 < buffer_length; i += 4) |
431 | if (buffer[i] != 0) { |
432 | int cable = buffer[i] >> 4; |
433 | u8 cin = buffer[i] & 0x0f; |
434 | struct usbmidi_in_port *port = &ep->ports[cable]; |
435 | int length; |
436 | |
437 | length = snd_usbmidi_cin_length[cin]; |
438 | if (cin == 0xf && buffer[i + 1] >= 0xf8) |
439 | ; /* realtime msg: no running status change */ |
440 | else if (cin >= 0x8 && cin <= 0xe) |
441 | /* channel msg */ |
442 | port->running_status_length = length - 1; |
443 | else if (cin == 0x4 && |
444 | port->running_status_length != 0 && |
445 | buffer[i + 1] < 0x80) |
446 | /* CIN 4 that is not a SysEx */ |
447 | length = port->running_status_length; |
448 | else |
449 | /* |
450 | * All other msgs cannot begin running status. |
451 | * (A channel msg sent as two or three CIN 0xF |
452 | * packets could in theory, but this device |
453 | * doesn't use this format.) |
454 | */ |
455 | port->running_status_length = 0; |
456 | snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); |
457 | } |
458 | } |
459 | |
460 | /* |
461 | * CME protocol: like the standard protocol, but SysEx commands are sent as a |
462 | * single USB packet preceded by a 0x0F byte. |
463 | */ |
464 | static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep, |
465 | uint8_t *buffer, int buffer_length) |
466 | { |
467 | if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f) |
468 | snd_usbmidi_standard_input(ep, buffer, buffer_length); |
469 | else |
470 | snd_usbmidi_input_data(ep, buffer[0] >> 4, |
471 | &buffer[1], buffer_length - 1); |
472 | } |
473 | |
474 | /* |
475 | * Adds one USB MIDI packet to the output buffer. |
476 | */ |
477 | static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0, |
478 | uint8_t p1, uint8_t p2, uint8_t p3) |
479 | { |
480 | |
481 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; |
482 | buf[0] = p0; |
483 | buf[1] = p1; |
484 | buf[2] = p2; |
485 | buf[3] = p3; |
486 | urb->transfer_buffer_length += 4; |
487 | } |
488 | |
489 | /* |
490 | * Adds one Midiman packet to the output buffer. |
491 | */ |
492 | static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0, |
493 | uint8_t p1, uint8_t p2, uint8_t p3) |
494 | { |
495 | |
496 | uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length; |
497 | buf[0] = p1; |
498 | buf[1] = p2; |
499 | buf[2] = p3; |
500 | buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f]; |
501 | urb->transfer_buffer_length += 4; |
502 | } |
503 | |
504 | /* |
505 | * Converts MIDI commands to USB MIDI packets. |
506 | */ |
507 | static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port, |
508 | uint8_t b, struct urb* urb) |
509 | { |
510 | uint8_t p0 = port->cable; |
511 | void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) = |
512 | port->ep->umidi->usb_protocol_ops->output_packet; |
513 | |
514 | if (b >= 0xf8) { |
515 | output_packet(urb, p0 | 0x0f, b, 0, 0); |
516 | } else if (b >= 0xf0) { |
517 | switch (b) { |
518 | case 0xf0: |
519 | port->data[0] = b; |
520 | port->state = STATE_SYSEX_1; |
521 | break; |
522 | case 0xf1: |
523 | case 0xf3: |
524 | port->data[0] = b; |
525 | port->state = STATE_1PARAM; |
526 | break; |
527 | case 0xf2: |
528 | port->data[0] = b; |
529 | port->state = STATE_2PARAM_1; |
530 | break; |
531 | case 0xf4: |
532 | case 0xf5: |
533 | port->state = STATE_UNKNOWN; |
534 | break; |
535 | case 0xf6: |
536 | output_packet(urb, p0 | 0x05, 0xf6, 0, 0); |
537 | port->state = STATE_UNKNOWN; |
538 | break; |
539 | case 0xf7: |
540 | switch (port->state) { |
541 | case STATE_SYSEX_0: |
542 | output_packet(urb, p0 | 0x05, 0xf7, 0, 0); |
543 | break; |
544 | case STATE_SYSEX_1: |
545 | output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0); |
546 | break; |
547 | case STATE_SYSEX_2: |
548 | output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7); |
549 | break; |
550 | } |
551 | port->state = STATE_UNKNOWN; |
552 | break; |
553 | } |
554 | } else if (b >= 0x80) { |
555 | port->data[0] = b; |
556 | if (b >= 0xc0 && b <= 0xdf) |
557 | port->state = STATE_1PARAM; |
558 | else |
559 | port->state = STATE_2PARAM_1; |
560 | } else { /* b < 0x80 */ |
561 | switch (port->state) { |
562 | case STATE_1PARAM: |
563 | if (port->data[0] < 0xf0) { |
564 | p0 |= port->data[0] >> 4; |
565 | } else { |
566 | p0 |= 0x02; |
567 | port->state = STATE_UNKNOWN; |
568 | } |
569 | output_packet(urb, p0, port->data[0], b, 0); |
570 | break; |
571 | case STATE_2PARAM_1: |
572 | port->data[1] = b; |
573 | port->state = STATE_2PARAM_2; |
574 | break; |
575 | case STATE_2PARAM_2: |
576 | if (port->data[0] < 0xf0) { |
577 | p0 |= port->data[0] >> 4; |
578 | port->state = STATE_2PARAM_1; |
579 | } else { |
580 | p0 |= 0x03; |
581 | port->state = STATE_UNKNOWN; |
582 | } |
583 | output_packet(urb, p0, port->data[0], port->data[1], b); |
584 | break; |
585 | case STATE_SYSEX_0: |
586 | port->data[0] = b; |
587 | port->state = STATE_SYSEX_1; |
588 | break; |
589 | case STATE_SYSEX_1: |
590 | port->data[1] = b; |
591 | port->state = STATE_SYSEX_2; |
592 | break; |
593 | case STATE_SYSEX_2: |
594 | output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b); |
595 | port->state = STATE_SYSEX_0; |
596 | break; |
597 | } |
598 | } |
599 | } |
600 | |
601 | static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep, |
602 | struct urb *urb) |
603 | { |
604 | int p; |
605 | |
606 | /* FIXME: lower-numbered ports can starve higher-numbered ports */ |
607 | for (p = 0; p < 0x10; ++p) { |
608 | struct usbmidi_out_port* port = &ep->ports[p]; |
609 | if (!port->active) |
610 | continue; |
611 | while (urb->transfer_buffer_length + 3 < ep->max_transfer) { |
612 | uint8_t b; |
613 | if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) { |
614 | port->active = 0; |
615 | break; |
616 | } |
617 | snd_usbmidi_transmit_byte(port, b, urb); |
618 | } |
619 | } |
620 | } |
621 | |
622 | static struct usb_protocol_ops snd_usbmidi_standard_ops = { |
623 | .input = snd_usbmidi_standard_input, |
624 | .output = snd_usbmidi_standard_output, |
625 | .output_packet = snd_usbmidi_output_standard_packet, |
626 | }; |
627 | |
628 | static struct usb_protocol_ops snd_usbmidi_midiman_ops = { |
629 | .input = snd_usbmidi_midiman_input, |
630 | .output = snd_usbmidi_standard_output, |
631 | .output_packet = snd_usbmidi_output_midiman_packet, |
632 | }; |
633 | |
634 | static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = { |
635 | .input = snd_usbmidi_maudio_broken_running_status_input, |
636 | .output = snd_usbmidi_standard_output, |
637 | .output_packet = snd_usbmidi_output_standard_packet, |
638 | }; |
639 | |
640 | static struct usb_protocol_ops snd_usbmidi_cme_ops = { |
641 | .input = snd_usbmidi_cme_input, |
642 | .output = snd_usbmidi_standard_output, |
643 | .output_packet = snd_usbmidi_output_standard_packet, |
644 | }; |
645 | |
646 | /* |
647 | * Novation USB MIDI protocol: number of data bytes is in the first byte |
648 | * (when receiving) (+1!) or in the second byte (when sending); data begins |
649 | * at the third byte. |
650 | */ |
651 | |
652 | static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep, |
653 | uint8_t* buffer, int buffer_length) |
654 | { |
655 | if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1) |
656 | return; |
657 | snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1); |
658 | } |
659 | |
660 | static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep, |
661 | struct urb *urb) |
662 | { |
663 | uint8_t* transfer_buffer; |
664 | int count; |
665 | |
666 | if (!ep->ports[0].active) |
667 | return; |
668 | transfer_buffer = urb->transfer_buffer; |
669 | count = snd_rawmidi_transmit(ep->ports[0].substream, |
670 | &transfer_buffer[2], |
671 | ep->max_transfer - 2); |
672 | if (count < 1) { |
673 | ep->ports[0].active = 0; |
674 | return; |
675 | } |
676 | transfer_buffer[0] = 0; |
677 | transfer_buffer[1] = count; |
678 | urb->transfer_buffer_length = 2 + count; |
679 | } |
680 | |
681 | static struct usb_protocol_ops snd_usbmidi_novation_ops = { |
682 | .input = snd_usbmidi_novation_input, |
683 | .output = snd_usbmidi_novation_output, |
684 | }; |
685 | |
686 | /* |
687 | * "raw" protocol: used by the MOTU FastLane. |
688 | */ |
689 | |
690 | static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep, |
691 | uint8_t* buffer, int buffer_length) |
692 | { |
693 | snd_usbmidi_input_data(ep, 0, buffer, buffer_length); |
694 | } |
695 | |
696 | static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep, |
697 | struct urb *urb) |
698 | { |
699 | int count; |
700 | |
701 | if (!ep->ports[0].active) |
702 | return; |
703 | count = snd_rawmidi_transmit(ep->ports[0].substream, |
704 | urb->transfer_buffer, |
705 | ep->max_transfer); |
706 | if (count < 1) { |
707 | ep->ports[0].active = 0; |
708 | return; |
709 | } |
710 | urb->transfer_buffer_length = count; |
711 | } |
712 | |
713 | static struct usb_protocol_ops snd_usbmidi_raw_ops = { |
714 | .input = snd_usbmidi_raw_input, |
715 | .output = snd_usbmidi_raw_output, |
716 | }; |
717 | |
718 | static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep, |
719 | uint8_t *buffer, int buffer_length) |
720 | { |
721 | if (buffer_length != 9) |
722 | return; |
723 | buffer_length = 8; |
724 | while (buffer_length && buffer[buffer_length - 1] == 0xFD) |
725 | buffer_length--; |
726 | if (buffer_length) |
727 | snd_usbmidi_input_data(ep, 0, buffer, buffer_length); |
728 | } |
729 | |
730 | static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep, |
731 | struct urb *urb) |
732 | { |
733 | int count; |
734 | |
735 | if (!ep->ports[0].active) |
736 | return; |
737 | count = snd_usb_get_speed(ep->umidi->dev) == USB_SPEED_HIGH ? 1 : 2; |
738 | count = snd_rawmidi_transmit(ep->ports[0].substream, |
739 | urb->transfer_buffer, |
740 | count); |
741 | if (count < 1) { |
742 | ep->ports[0].active = 0; |
743 | return; |
744 | } |
745 | |
746 | memset(urb->transfer_buffer + count, 0xFD, 9 - count); |
747 | urb->transfer_buffer_length = count; |
748 | } |
749 | |
750 | static struct usb_protocol_ops snd_usbmidi_122l_ops = { |
751 | .input = snd_usbmidi_us122l_input, |
752 | .output = snd_usbmidi_us122l_output, |
753 | }; |
754 | |
755 | /* |
756 | * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching. |
757 | */ |
758 | |
759 | static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep) |
760 | { |
761 | static const u8 init_data[] = { |
762 | /* initialization magic: "get version" */ |
763 | 0xf0, |
764 | 0x00, 0x20, 0x31, /* Emagic */ |
765 | 0x64, /* Unitor8 */ |
766 | 0x0b, /* version number request */ |
767 | 0x00, /* command version */ |
768 | 0x00, /* EEPROM, box 0 */ |
769 | 0xf7 |
770 | }; |
771 | send_bulk_static_data(ep, init_data, sizeof(init_data)); |
772 | /* while we're at it, pour on more magic */ |
773 | send_bulk_static_data(ep, init_data, sizeof(init_data)); |
774 | } |
775 | |
776 | static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep) |
777 | { |
778 | static const u8 finish_data[] = { |
779 | /* switch to patch mode with last preset */ |
780 | 0xf0, |
781 | 0x00, 0x20, 0x31, /* Emagic */ |
782 | 0x64, /* Unitor8 */ |
783 | 0x10, /* patch switch command */ |
784 | 0x00, /* command version */ |
785 | 0x7f, /* to all boxes */ |
786 | 0x40, /* last preset in EEPROM */ |
787 | 0xf7 |
788 | }; |
789 | send_bulk_static_data(ep, finish_data, sizeof(finish_data)); |
790 | } |
791 | |
792 | static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep, |
793 | uint8_t* buffer, int buffer_length) |
794 | { |
795 | int i; |
796 | |
797 | /* FF indicates end of valid data */ |
798 | for (i = 0; i < buffer_length; ++i) |
799 | if (buffer[i] == 0xff) { |
800 | buffer_length = i; |
801 | break; |
802 | } |
803 | |
804 | /* handle F5 at end of last buffer */ |
805 | if (ep->seen_f5) |
806 | goto switch_port; |
807 | |
808 | while (buffer_length > 0) { |
809 | /* determine size of data until next F5 */ |
810 | for (i = 0; i < buffer_length; ++i) |
811 | if (buffer[i] == 0xf5) |
812 | break; |
813 | snd_usbmidi_input_data(ep, ep->current_port, buffer, i); |
814 | buffer += i; |
815 | buffer_length -= i; |
816 | |
817 | if (buffer_length <= 0) |
818 | break; |
819 | /* assert(buffer[0] == 0xf5); */ |
820 | ep->seen_f5 = 1; |
821 | ++buffer; |
822 | --buffer_length; |
823 | |
824 | switch_port: |
825 | if (buffer_length <= 0) |
826 | break; |
827 | if (buffer[0] < 0x80) { |
828 | ep->current_port = (buffer[0] - 1) & 15; |
829 | ++buffer; |
830 | --buffer_length; |
831 | } |
832 | ep->seen_f5 = 0; |
833 | } |
834 | } |
835 | |
836 | static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep, |
837 | struct urb *urb) |
838 | { |
839 | int port0 = ep->current_port; |
840 | uint8_t* buf = urb->transfer_buffer; |
841 | int buf_free = ep->max_transfer; |
842 | int length, i; |
843 | |
844 | for (i = 0; i < 0x10; ++i) { |
845 | /* round-robin, starting at the last current port */ |
846 | int portnum = (port0 + i) & 15; |
847 | struct usbmidi_out_port* port = &ep->ports[portnum]; |
848 | |
849 | if (!port->active) |
850 | continue; |
851 | if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) { |
852 | port->active = 0; |
853 | continue; |
854 | } |
855 | |
856 | if (portnum != ep->current_port) { |
857 | if (buf_free < 2) |
858 | break; |
859 | ep->current_port = portnum; |
860 | buf[0] = 0xf5; |
861 | buf[1] = (portnum + 1) & 15; |
862 | buf += 2; |
863 | buf_free -= 2; |
864 | } |
865 | |
866 | if (buf_free < 1) |
867 | break; |
868 | length = snd_rawmidi_transmit(port->substream, buf, buf_free); |
869 | if (length > 0) { |
870 | buf += length; |
871 | buf_free -= length; |
872 | if (buf_free < 1) |
873 | break; |
874 | } |
875 | } |
876 | if (buf_free < ep->max_transfer && buf_free > 0) { |
877 | *buf = 0xff; |
878 | --buf_free; |
879 | } |
880 | urb->transfer_buffer_length = ep->max_transfer - buf_free; |
881 | } |
882 | |
883 | static struct usb_protocol_ops snd_usbmidi_emagic_ops = { |
884 | .input = snd_usbmidi_emagic_input, |
885 | .output = snd_usbmidi_emagic_output, |
886 | .init_out_endpoint = snd_usbmidi_emagic_init_out, |
887 | .finish_out_endpoint = snd_usbmidi_emagic_finish_out, |
888 | }; |
889 | |
890 | |
891 | static void update_roland_altsetting(struct snd_usb_midi* umidi) |
892 | { |
893 | struct usb_interface *intf; |
894 | struct usb_host_interface *hostif; |
895 | struct usb_interface_descriptor *intfd; |
896 | int is_light_load; |
897 | |
898 | intf = umidi->iface; |
899 | is_light_load = intf->cur_altsetting != intf->altsetting; |
900 | if (umidi->roland_load_ctl->private_value == is_light_load) |
901 | return; |
902 | hostif = &intf->altsetting[umidi->roland_load_ctl->private_value]; |
903 | intfd = get_iface_desc(hostif); |
904 | snd_usbmidi_input_stop(&umidi->list); |
905 | usb_set_interface(umidi->dev, intfd->bInterfaceNumber, |
906 | intfd->bAlternateSetting); |
907 | snd_usbmidi_input_start(&umidi->list); |
908 | } |
909 | |
910 | static void substream_open(struct snd_rawmidi_substream *substream, int open) |
911 | { |
912 | struct snd_usb_midi* umidi = substream->rmidi->private_data; |
913 | struct snd_kcontrol *ctl; |
914 | |
915 | mutex_lock(&umidi->mutex); |
916 | if (open) { |
917 | if (umidi->opened++ == 0 && umidi->roland_load_ctl) { |
918 | ctl = umidi->roland_load_ctl; |
919 | ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE; |
920 | snd_ctl_notify(umidi->card, |
921 | SNDRV_CTL_EVENT_MASK_INFO, &ctl->id); |
922 | update_roland_altsetting(umidi); |
923 | } |
924 | } else { |
925 | if (--umidi->opened == 0 && umidi->roland_load_ctl) { |
926 | ctl = umidi->roland_load_ctl; |
927 | ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; |
928 | snd_ctl_notify(umidi->card, |
929 | SNDRV_CTL_EVENT_MASK_INFO, &ctl->id); |
930 | } |
931 | } |
932 | mutex_unlock(&umidi->mutex); |
933 | } |
934 | |
935 | static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream) |
936 | { |
937 | struct snd_usb_midi* umidi = substream->rmidi->private_data; |
938 | struct usbmidi_out_port* port = NULL; |
939 | int i, j; |
940 | |
941 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) |
942 | if (umidi->endpoints[i].out) |
943 | for (j = 0; j < 0x10; ++j) |
944 | if (umidi->endpoints[i].out->ports[j].substream == substream) { |
945 | port = &umidi->endpoints[i].out->ports[j]; |
946 | break; |
947 | } |
948 | if (!port) { |
949 | snd_BUG(); |
950 | return -ENXIO; |
951 | } |
952 | substream->runtime->private_data = port; |
953 | port->state = STATE_UNKNOWN; |
954 | substream_open(substream, 1); |
955 | return 0; |
956 | } |
957 | |
958 | static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream) |
959 | { |
960 | substream_open(substream, 0); |
961 | return 0; |
962 | } |
963 | |
964 | static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up) |
965 | { |
966 | struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data; |
967 | |
968 | port->active = up; |
969 | if (up) { |
970 | if (port->ep->umidi->disconnected) { |
971 | /* gobble up remaining bytes to prevent wait in |
972 | * snd_rawmidi_drain_output */ |
973 | while (!snd_rawmidi_transmit_empty(substream)) |
974 | snd_rawmidi_transmit_ack(substream, 1); |
975 | return; |
976 | } |
977 | tasklet_schedule(&port->ep->tasklet); |
978 | } |
979 | } |
980 | |
981 | static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream) |
982 | { |
983 | struct usbmidi_out_port* port = substream->runtime->private_data; |
984 | struct snd_usb_midi_out_endpoint *ep = port->ep; |
985 | unsigned int drain_urbs; |
986 | DEFINE_WAIT(wait); |
987 | long timeout = msecs_to_jiffies(50); |
988 | |
989 | if (ep->umidi->disconnected) |
990 | return; |
991 | /* |
992 | * The substream buffer is empty, but some data might still be in the |
993 | * currently active URBs, so we have to wait for those to complete. |
994 | */ |
995 | spin_lock_irq(&ep->buffer_lock); |
996 | drain_urbs = ep->active_urbs; |
997 | if (drain_urbs) { |
998 | ep->drain_urbs |= drain_urbs; |
999 | do { |
1000 | prepare_to_wait(&ep->drain_wait, &wait, |
1001 | TASK_UNINTERRUPTIBLE); |
1002 | spin_unlock_irq(&ep->buffer_lock); |
1003 | timeout = schedule_timeout(timeout); |
1004 | spin_lock_irq(&ep->buffer_lock); |
1005 | drain_urbs &= ep->drain_urbs; |
1006 | } while (drain_urbs && timeout); |
1007 | finish_wait(&ep->drain_wait, &wait); |
1008 | } |
1009 | spin_unlock_irq(&ep->buffer_lock); |
1010 | } |
1011 | |
1012 | static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream) |
1013 | { |
1014 | substream_open(substream, 1); |
1015 | return 0; |
1016 | } |
1017 | |
1018 | static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream) |
1019 | { |
1020 | substream_open(substream, 0); |
1021 | return 0; |
1022 | } |
1023 | |
1024 | static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up) |
1025 | { |
1026 | struct snd_usb_midi* umidi = substream->rmidi->private_data; |
1027 | |
1028 | if (up) |
1029 | set_bit(substream->number, &umidi->input_triggered); |
1030 | else |
1031 | clear_bit(substream->number, &umidi->input_triggered); |
1032 | } |
1033 | |
1034 | static struct snd_rawmidi_ops snd_usbmidi_output_ops = { |
1035 | .open = snd_usbmidi_output_open, |
1036 | .close = snd_usbmidi_output_close, |
1037 | .trigger = snd_usbmidi_output_trigger, |
1038 | .drain = snd_usbmidi_output_drain, |
1039 | }; |
1040 | |
1041 | static struct snd_rawmidi_ops snd_usbmidi_input_ops = { |
1042 | .open = snd_usbmidi_input_open, |
1043 | .close = snd_usbmidi_input_close, |
1044 | .trigger = snd_usbmidi_input_trigger |
1045 | }; |
1046 | |
1047 | static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb, |
1048 | unsigned int buffer_length) |
1049 | { |
1050 | usb_buffer_free(umidi->dev, buffer_length, |
1051 | urb->transfer_buffer, urb->transfer_dma); |
1052 | usb_free_urb(urb); |
1053 | } |
1054 | |
1055 | /* |
1056 | * Frees an input endpoint. |
1057 | * May be called when ep hasn't been initialized completely. |
1058 | */ |
1059 | static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep) |
1060 | { |
1061 | unsigned int i; |
1062 | |
1063 | for (i = 0; i < INPUT_URBS; ++i) |
1064 | if (ep->urbs[i]) |
1065 | free_urb_and_buffer(ep->umidi, ep->urbs[i], |
1066 | ep->urbs[i]->transfer_buffer_length); |
1067 | kfree(ep); |
1068 | } |
1069 | |
1070 | /* |
1071 | * Creates an input endpoint. |
1072 | */ |
1073 | static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, |
1074 | struct snd_usb_midi_endpoint_info* ep_info, |
1075 | struct snd_usb_midi_endpoint* rep) |
1076 | { |
1077 | struct snd_usb_midi_in_endpoint* ep; |
1078 | void* buffer; |
1079 | unsigned int pipe; |
1080 | int length; |
1081 | unsigned int i; |
1082 | |
1083 | rep->in = NULL; |
1084 | ep = kzalloc(sizeof(*ep), GFP_KERNEL); |
1085 | if (!ep) |
1086 | return -ENOMEM; |
1087 | ep->umidi = umidi; |
1088 | |
1089 | for (i = 0; i < INPUT_URBS; ++i) { |
1090 | ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); |
1091 | if (!ep->urbs[i]) { |
1092 | snd_usbmidi_in_endpoint_delete(ep); |
1093 | return -ENOMEM; |
1094 | } |
1095 | } |
1096 | if (ep_info->in_interval) |
1097 | pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep); |
1098 | else |
1099 | pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep); |
1100 | length = usb_maxpacket(umidi->dev, pipe, 0); |
1101 | for (i = 0; i < INPUT_URBS; ++i) { |
1102 | buffer = usb_buffer_alloc(umidi->dev, length, GFP_KERNEL, |
1103 | &ep->urbs[i]->transfer_dma); |
1104 | if (!buffer) { |
1105 | snd_usbmidi_in_endpoint_delete(ep); |
1106 | return -ENOMEM; |
1107 | } |
1108 | if (ep_info->in_interval) |
1109 | usb_fill_int_urb(ep->urbs[i], umidi->dev, |
1110 | pipe, buffer, length, |
1111 | snd_usbmidi_in_urb_complete, |
1112 | ep, ep_info->in_interval); |
1113 | else |
1114 | usb_fill_bulk_urb(ep->urbs[i], umidi->dev, |
1115 | pipe, buffer, length, |
1116 | snd_usbmidi_in_urb_complete, ep); |
1117 | ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1118 | } |
1119 | |
1120 | rep->in = ep; |
1121 | return 0; |
1122 | } |
1123 | |
1124 | /* |
1125 | * Frees an output endpoint. |
1126 | * May be called when ep hasn't been initialized completely. |
1127 | */ |
1128 | static void snd_usbmidi_out_endpoint_clear(struct snd_usb_midi_out_endpoint *ep) |
1129 | { |
1130 | unsigned int i; |
1131 | |
1132 | for (i = 0; i < OUTPUT_URBS; ++i) |
1133 | if (ep->urbs[i].urb) { |
1134 | free_urb_and_buffer(ep->umidi, ep->urbs[i].urb, |
1135 | ep->max_transfer); |
1136 | ep->urbs[i].urb = NULL; |
1137 | } |
1138 | } |
1139 | |
1140 | static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint *ep) |
1141 | { |
1142 | snd_usbmidi_out_endpoint_clear(ep); |
1143 | kfree(ep); |
1144 | } |
1145 | |
1146 | /* |
1147 | * Creates an output endpoint, and initializes output ports. |
1148 | */ |
1149 | static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi, |
1150 | struct snd_usb_midi_endpoint_info* ep_info, |
1151 | struct snd_usb_midi_endpoint* rep) |
1152 | { |
1153 | struct snd_usb_midi_out_endpoint* ep; |
1154 | unsigned int i; |
1155 | unsigned int pipe; |
1156 | void* buffer; |
1157 | |
1158 | rep->out = NULL; |
1159 | ep = kzalloc(sizeof(*ep), GFP_KERNEL); |
1160 | if (!ep) |
1161 | return -ENOMEM; |
1162 | ep->umidi = umidi; |
1163 | |
1164 | for (i = 0; i < OUTPUT_URBS; ++i) { |
1165 | ep->urbs[i].urb = usb_alloc_urb(0, GFP_KERNEL); |
1166 | if (!ep->urbs[i].urb) { |
1167 | snd_usbmidi_out_endpoint_delete(ep); |
1168 | return -ENOMEM; |
1169 | } |
1170 | ep->urbs[i].ep = ep; |
1171 | } |
1172 | if (ep_info->out_interval) |
1173 | pipe = usb_sndintpipe(umidi->dev, ep_info->out_ep); |
1174 | else |
1175 | pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep); |
1176 | switch (umidi->usb_id) { |
1177 | default: |
1178 | ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1); |
1179 | break; |
1180 | /* |
1181 | * Various chips declare a packet size larger than 4 bytes, but |
1182 | * do not actually work with larger packets: |
1183 | */ |
1184 | case USB_ID(0x0a92, 0x1020): /* ESI M4U */ |
1185 | case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */ |
1186 | case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */ |
1187 | case USB_ID(0x15ca, 0x1806): /* Textech USB Midi Cable */ |
1188 | case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */ |
1189 | ep->max_transfer = 4; |
1190 | break; |
1191 | } |
1192 | for (i = 0; i < OUTPUT_URBS; ++i) { |
1193 | buffer = usb_buffer_alloc(umidi->dev, |
1194 | ep->max_transfer, GFP_KERNEL, |
1195 | &ep->urbs[i].urb->transfer_dma); |
1196 | if (!buffer) { |
1197 | snd_usbmidi_out_endpoint_delete(ep); |
1198 | return -ENOMEM; |
1199 | } |
1200 | if (ep_info->out_interval) |
1201 | usb_fill_int_urb(ep->urbs[i].urb, umidi->dev, |
1202 | pipe, buffer, ep->max_transfer, |
1203 | snd_usbmidi_out_urb_complete, |
1204 | &ep->urbs[i], ep_info->out_interval); |
1205 | else |
1206 | usb_fill_bulk_urb(ep->urbs[i].urb, umidi->dev, |
1207 | pipe, buffer, ep->max_transfer, |
1208 | snd_usbmidi_out_urb_complete, |
1209 | &ep->urbs[i]); |
1210 | ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
1211 | } |
1212 | |
1213 | spin_lock_init(&ep->buffer_lock); |
1214 | tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep); |
1215 | init_waitqueue_head(&ep->drain_wait); |
1216 | |
1217 | for (i = 0; i < 0x10; ++i) |
1218 | if (ep_info->out_cables & (1 << i)) { |
1219 | ep->ports[i].ep = ep; |
1220 | ep->ports[i].cable = i << 4; |
1221 | } |
1222 | |
1223 | if (umidi->usb_protocol_ops->init_out_endpoint) |
1224 | umidi->usb_protocol_ops->init_out_endpoint(ep); |
1225 | |
1226 | rep->out = ep; |
1227 | return 0; |
1228 | } |
1229 | |
1230 | /* |
1231 | * Frees everything. |
1232 | */ |
1233 | static void snd_usbmidi_free(struct snd_usb_midi* umidi) |
1234 | { |
1235 | int i; |
1236 | |
1237 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1238 | struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; |
1239 | if (ep->out) |
1240 | snd_usbmidi_out_endpoint_delete(ep->out); |
1241 | if (ep->in) |
1242 | snd_usbmidi_in_endpoint_delete(ep->in); |
1243 | } |
1244 | mutex_destroy(&umidi->mutex); |
1245 | kfree(umidi); |
1246 | } |
1247 | |
1248 | /* |
1249 | * Unlinks all URBs (must be done before the usb_device is deleted). |
1250 | */ |
1251 | void snd_usbmidi_disconnect(struct list_head* p) |
1252 | { |
1253 | struct snd_usb_midi* umidi; |
1254 | unsigned int i, j; |
1255 | |
1256 | umidi = list_entry(p, struct snd_usb_midi, list); |
1257 | /* |
1258 | * an URB's completion handler may start the timer and |
1259 | * a timer may submit an URB. To reliably break the cycle |
1260 | * a flag under lock must be used |
1261 | */ |
1262 | spin_lock_irq(&umidi->disc_lock); |
1263 | umidi->disconnected = 1; |
1264 | spin_unlock_irq(&umidi->disc_lock); |
1265 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1266 | struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; |
1267 | if (ep->out) |
1268 | tasklet_kill(&ep->out->tasklet); |
1269 | if (ep->out) { |
1270 | for (j = 0; j < OUTPUT_URBS; ++j) |
1271 | usb_kill_urb(ep->out->urbs[j].urb); |
1272 | if (umidi->usb_protocol_ops->finish_out_endpoint) |
1273 | umidi->usb_protocol_ops->finish_out_endpoint(ep->out); |
1274 | ep->out->active_urbs = 0; |
1275 | if (ep->out->drain_urbs) { |
1276 | ep->out->drain_urbs = 0; |
1277 | wake_up(&ep->out->drain_wait); |
1278 | } |
1279 | } |
1280 | if (ep->in) |
1281 | for (j = 0; j < INPUT_URBS; ++j) |
1282 | usb_kill_urb(ep->in->urbs[j]); |
1283 | /* free endpoints here; later call can result in Oops */ |
1284 | if (ep->out) |
1285 | snd_usbmidi_out_endpoint_clear(ep->out); |
1286 | if (ep->in) { |
1287 | snd_usbmidi_in_endpoint_delete(ep->in); |
1288 | ep->in = NULL; |
1289 | } |
1290 | } |
1291 | del_timer_sync(&umidi->error_timer); |
1292 | } |
1293 | |
1294 | static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi) |
1295 | { |
1296 | struct snd_usb_midi* umidi = rmidi->private_data; |
1297 | snd_usbmidi_free(umidi); |
1298 | } |
1299 | |
1300 | static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi, |
1301 | int stream, int number) |
1302 | { |
1303 | struct list_head* list; |
1304 | |
1305 | list_for_each(list, &umidi->rmidi->streams[stream].substreams) { |
1306 | struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list); |
1307 | if (substream->number == number) |
1308 | return substream; |
1309 | } |
1310 | return NULL; |
1311 | } |
1312 | |
1313 | /* |
1314 | * This list specifies names for ports that do not fit into the standard |
1315 | * "(product) MIDI (n)" schema because they aren't external MIDI ports, |
1316 | * such as internal control or synthesizer ports. |
1317 | */ |
1318 | static struct port_info { |
1319 | u32 id; |
1320 | short int port; |
1321 | short int voices; |
1322 | const char *name; |
1323 | unsigned int seq_flags; |
1324 | } snd_usbmidi_port_info[] = { |
1325 | #define PORT_INFO(vendor, product, num, name_, voices_, flags) \ |
1326 | { .id = USB_ID(vendor, product), \ |
1327 | .port = num, .voices = voices_, \ |
1328 | .name = name_, .seq_flags = flags } |
1329 | #define EXTERNAL_PORT(vendor, product, num, name) \ |
1330 | PORT_INFO(vendor, product, num, name, 0, \ |
1331 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1332 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1333 | SNDRV_SEQ_PORT_TYPE_PORT) |
1334 | #define CONTROL_PORT(vendor, product, num, name) \ |
1335 | PORT_INFO(vendor, product, num, name, 0, \ |
1336 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1337 | SNDRV_SEQ_PORT_TYPE_HARDWARE) |
1338 | #define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \ |
1339 | PORT_INFO(vendor, product, num, name, voices, \ |
1340 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1341 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ |
1342 | SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \ |
1343 | SNDRV_SEQ_PORT_TYPE_MIDI_GS | \ |
1344 | SNDRV_SEQ_PORT_TYPE_MIDI_XG | \ |
1345 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1346 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) |
1347 | #define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \ |
1348 | PORT_INFO(vendor, product, num, name, voices, \ |
1349 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \ |
1350 | SNDRV_SEQ_PORT_TYPE_MIDI_GM | \ |
1351 | SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \ |
1352 | SNDRV_SEQ_PORT_TYPE_MIDI_GS | \ |
1353 | SNDRV_SEQ_PORT_TYPE_MIDI_XG | \ |
1354 | SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \ |
1355 | SNDRV_SEQ_PORT_TYPE_HARDWARE | \ |
1356 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER) |
1357 | /* Roland UA-100 */ |
1358 | CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"), |
1359 | /* Roland SC-8850 */ |
1360 | SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128), |
1361 | SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128), |
1362 | SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128), |
1363 | SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128), |
1364 | EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"), |
1365 | EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"), |
1366 | /* Roland U-8 */ |
1367 | EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"), |
1368 | CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"), |
1369 | /* Roland SC-8820 */ |
1370 | SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64), |
1371 | SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64), |
1372 | EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"), |
1373 | /* Roland SK-500 */ |
1374 | SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64), |
1375 | SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64), |
1376 | EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"), |
1377 | /* Roland SC-D70 */ |
1378 | SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64), |
1379 | SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64), |
1380 | EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"), |
1381 | /* Edirol UM-880 */ |
1382 | CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"), |
1383 | /* Edirol SD-90 */ |
1384 | ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128), |
1385 | ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128), |
1386 | EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"), |
1387 | EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"), |
1388 | /* Edirol UM-550 */ |
1389 | CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"), |
1390 | /* Edirol SD-20 */ |
1391 | ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64), |
1392 | ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64), |
1393 | EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"), |
1394 | /* Edirol SD-80 */ |
1395 | ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128), |
1396 | ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128), |
1397 | EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"), |
1398 | EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"), |
1399 | /* Edirol UA-700 */ |
1400 | EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"), |
1401 | CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"), |
1402 | /* Roland VariOS */ |
1403 | EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"), |
1404 | EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"), |
1405 | EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"), |
1406 | /* Edirol PCR */ |
1407 | EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"), |
1408 | EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"), |
1409 | EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"), |
1410 | /* BOSS GS-10 */ |
1411 | EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"), |
1412 | CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"), |
1413 | /* Edirol UA-1000 */ |
1414 | EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"), |
1415 | CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"), |
1416 | /* Edirol UR-80 */ |
1417 | EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"), |
1418 | EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"), |
1419 | EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"), |
1420 | /* Edirol PCR-A */ |
1421 | EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"), |
1422 | EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"), |
1423 | EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"), |
1424 | /* Edirol UM-3EX */ |
1425 | CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"), |
1426 | /* M-Audio MidiSport 8x8 */ |
1427 | CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"), |
1428 | CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"), |
1429 | /* MOTU Fastlane */ |
1430 | EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"), |
1431 | EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"), |
1432 | /* Emagic Unitor8/AMT8/MT4 */ |
1433 | EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"), |
1434 | EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"), |
1435 | EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"), |
1436 | /* Access Music Virus TI */ |
1437 | EXTERNAL_PORT(0x133e, 0x0815, 0, "%s MIDI"), |
1438 | PORT_INFO(0x133e, 0x0815, 1, "%s Synth", 0, |
1439 | SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | |
1440 | SNDRV_SEQ_PORT_TYPE_HARDWARE | |
1441 | SNDRV_SEQ_PORT_TYPE_SYNTHESIZER), |
1442 | }; |
1443 | |
1444 | static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number) |
1445 | { |
1446 | int i; |
1447 | |
1448 | for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) { |
1449 | if (snd_usbmidi_port_info[i].id == umidi->usb_id && |
1450 | snd_usbmidi_port_info[i].port == number) |
1451 | return &snd_usbmidi_port_info[i]; |
1452 | } |
1453 | return NULL; |
1454 | } |
1455 | |
1456 | static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number, |
1457 | struct snd_seq_port_info *seq_port_info) |
1458 | { |
1459 | struct snd_usb_midi *umidi = rmidi->private_data; |
1460 | struct port_info *port_info; |
1461 | |
1462 | /* TODO: read port flags from descriptors */ |
1463 | port_info = find_port_info(umidi, number); |
1464 | if (port_info) { |
1465 | seq_port_info->type = port_info->seq_flags; |
1466 | seq_port_info->midi_voices = port_info->voices; |
1467 | } |
1468 | } |
1469 | |
1470 | static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi, |
1471 | int stream, int number, |
1472 | struct snd_rawmidi_substream ** rsubstream) |
1473 | { |
1474 | struct port_info *port_info; |
1475 | const char *name_format; |
1476 | |
1477 | struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number); |
1478 | if (!substream) { |
1479 | snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number); |
1480 | return; |
1481 | } |
1482 | |
1483 | /* TODO: read port name from jack descriptor */ |
1484 | port_info = find_port_info(umidi, number); |
1485 | name_format = port_info ? port_info->name : "%s MIDI %d"; |
1486 | snprintf(substream->name, sizeof(substream->name), |
1487 | name_format, umidi->card->shortname, number + 1); |
1488 | |
1489 | *rsubstream = substream; |
1490 | } |
1491 | |
1492 | /* |
1493 | * Creates the endpoints and their ports. |
1494 | */ |
1495 | static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi, |
1496 | struct snd_usb_midi_endpoint_info* endpoints) |
1497 | { |
1498 | int i, j, err; |
1499 | int out_ports = 0, in_ports = 0; |
1500 | |
1501 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1502 | if (endpoints[i].out_cables) { |
1503 | err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i], |
1504 | &umidi->endpoints[i]); |
1505 | if (err < 0) |
1506 | return err; |
1507 | } |
1508 | if (endpoints[i].in_cables) { |
1509 | err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i], |
1510 | &umidi->endpoints[i]); |
1511 | if (err < 0) |
1512 | return err; |
1513 | } |
1514 | |
1515 | for (j = 0; j < 0x10; ++j) { |
1516 | if (endpoints[i].out_cables & (1 << j)) { |
1517 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports, |
1518 | &umidi->endpoints[i].out->ports[j].substream); |
1519 | ++out_ports; |
1520 | } |
1521 | if (endpoints[i].in_cables & (1 << j)) { |
1522 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports, |
1523 | &umidi->endpoints[i].in->ports[j].substream); |
1524 | ++in_ports; |
1525 | } |
1526 | } |
1527 | } |
1528 | snd_printdd(KERN_INFO "created %d output and %d input ports\n", |
1529 | out_ports, in_ports); |
1530 | return 0; |
1531 | } |
1532 | |
1533 | /* |
1534 | * Returns MIDIStreaming device capabilities. |
1535 | */ |
1536 | static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi, |
1537 | struct snd_usb_midi_endpoint_info* endpoints) |
1538 | { |
1539 | struct usb_interface* intf; |
1540 | struct usb_host_interface *hostif; |
1541 | struct usb_interface_descriptor* intfd; |
1542 | struct usb_ms_header_descriptor* ms_header; |
1543 | struct usb_host_endpoint *hostep; |
1544 | struct usb_endpoint_descriptor* ep; |
1545 | struct usb_ms_endpoint_descriptor* ms_ep; |
1546 | int i, epidx; |
1547 | |
1548 | intf = umidi->iface; |
1549 | if (!intf) |
1550 | return -ENXIO; |
1551 | hostif = &intf->altsetting[0]; |
1552 | intfd = get_iface_desc(hostif); |
1553 | ms_header = (struct usb_ms_header_descriptor*)hostif->extra; |
1554 | if (hostif->extralen >= 7 && |
1555 | ms_header->bLength >= 7 && |
1556 | ms_header->bDescriptorType == USB_DT_CS_INTERFACE && |
1557 | ms_header->bDescriptorSubtype == UAC_HEADER) |
1558 | snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n", |
1559 | ms_header->bcdMSC[1], ms_header->bcdMSC[0]); |
1560 | else |
1561 | snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n"); |
1562 | |
1563 | epidx = 0; |
1564 | for (i = 0; i < intfd->bNumEndpoints; ++i) { |
1565 | hostep = &hostif->endpoint[i]; |
1566 | ep = get_ep_desc(hostep); |
1567 | if (!usb_endpoint_xfer_bulk(ep) && !usb_endpoint_xfer_int(ep)) |
1568 | continue; |
1569 | ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra; |
1570 | if (hostep->extralen < 4 || |
1571 | ms_ep->bLength < 4 || |
1572 | ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT || |
1573 | ms_ep->bDescriptorSubtype != UAC_MS_GENERAL) |
1574 | continue; |
1575 | if (usb_endpoint_dir_out(ep)) { |
1576 | if (endpoints[epidx].out_ep) { |
1577 | if (++epidx >= MIDI_MAX_ENDPOINTS) { |
1578 | snd_printk(KERN_WARNING "too many endpoints\n"); |
1579 | break; |
1580 | } |
1581 | } |
1582 | endpoints[epidx].out_ep = usb_endpoint_num(ep); |
1583 | if (usb_endpoint_xfer_int(ep)) |
1584 | endpoints[epidx].out_interval = ep->bInterval; |
1585 | else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW) |
1586 | /* |
1587 | * Low speed bulk transfers don't exist, so |
1588 | * force interrupt transfers for devices like |
1589 | * ESI MIDI Mate that try to use them anyway. |
1590 | */ |
1591 | endpoints[epidx].out_interval = 1; |
1592 | endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; |
1593 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", |
1594 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); |
1595 | } else { |
1596 | if (endpoints[epidx].in_ep) { |
1597 | if (++epidx >= MIDI_MAX_ENDPOINTS) { |
1598 | snd_printk(KERN_WARNING "too many endpoints\n"); |
1599 | break; |
1600 | } |
1601 | } |
1602 | endpoints[epidx].in_ep = usb_endpoint_num(ep); |
1603 | if (usb_endpoint_xfer_int(ep)) |
1604 | endpoints[epidx].in_interval = ep->bInterval; |
1605 | else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW) |
1606 | endpoints[epidx].in_interval = 1; |
1607 | endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1; |
1608 | snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", |
1609 | ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); |
1610 | } |
1611 | } |
1612 | return 0; |
1613 | } |
1614 | |
1615 | static int roland_load_info(struct snd_kcontrol *kcontrol, |
1616 | struct snd_ctl_elem_info *info) |
1617 | { |
1618 | static const char *const names[] = { "High Load", "Light Load" }; |
1619 | |
1620 | info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
1621 | info->count = 1; |
1622 | info->value.enumerated.items = 2; |
1623 | if (info->value.enumerated.item > 1) |
1624 | info->value.enumerated.item = 1; |
1625 | strcpy(info->value.enumerated.name, names[info->value.enumerated.item]); |
1626 | return 0; |
1627 | } |
1628 | |
1629 | static int roland_load_get(struct snd_kcontrol *kcontrol, |
1630 | struct snd_ctl_elem_value *value) |
1631 | { |
1632 | value->value.enumerated.item[0] = kcontrol->private_value; |
1633 | return 0; |
1634 | } |
1635 | |
1636 | static int roland_load_put(struct snd_kcontrol *kcontrol, |
1637 | struct snd_ctl_elem_value *value) |
1638 | { |
1639 | struct snd_usb_midi* umidi = kcontrol->private_data; |
1640 | int changed; |
1641 | |
1642 | if (value->value.enumerated.item[0] > 1) |
1643 | return -EINVAL; |
1644 | mutex_lock(&umidi->mutex); |
1645 | changed = value->value.enumerated.item[0] != kcontrol->private_value; |
1646 | if (changed) |
1647 | kcontrol->private_value = value->value.enumerated.item[0]; |
1648 | mutex_unlock(&umidi->mutex); |
1649 | return changed; |
1650 | } |
1651 | |
1652 | static struct snd_kcontrol_new roland_load_ctl = { |
1653 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
1654 | .name = "MIDI Input Mode", |
1655 | .info = roland_load_info, |
1656 | .get = roland_load_get, |
1657 | .put = roland_load_put, |
1658 | .private_value = 1, |
1659 | }; |
1660 | |
1661 | /* |
1662 | * On Roland devices, use the second alternate setting to be able to use |
1663 | * the interrupt input endpoint. |
1664 | */ |
1665 | static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi) |
1666 | { |
1667 | struct usb_interface* intf; |
1668 | struct usb_host_interface *hostif; |
1669 | struct usb_interface_descriptor* intfd; |
1670 | |
1671 | intf = umidi->iface; |
1672 | if (!intf || intf->num_altsetting != 2) |
1673 | return; |
1674 | |
1675 | hostif = &intf->altsetting[1]; |
1676 | intfd = get_iface_desc(hostif); |
1677 | if (intfd->bNumEndpoints != 2 || |
1678 | (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK || |
1679 | (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) |
1680 | return; |
1681 | |
1682 | snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n", |
1683 | intfd->bAlternateSetting); |
1684 | usb_set_interface(umidi->dev, intfd->bInterfaceNumber, |
1685 | intfd->bAlternateSetting); |
1686 | |
1687 | umidi->roland_load_ctl = snd_ctl_new1(&roland_load_ctl, umidi); |
1688 | if (snd_ctl_add(umidi->card, umidi->roland_load_ctl) < 0) |
1689 | umidi->roland_load_ctl = NULL; |
1690 | } |
1691 | |
1692 | /* |
1693 | * Try to find any usable endpoints in the interface. |
1694 | */ |
1695 | static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi, |
1696 | struct snd_usb_midi_endpoint_info* endpoint, |
1697 | int max_endpoints) |
1698 | { |
1699 | struct usb_interface* intf; |
1700 | struct usb_host_interface *hostif; |
1701 | struct usb_interface_descriptor* intfd; |
1702 | struct usb_endpoint_descriptor* epd; |
1703 | int i, out_eps = 0, in_eps = 0; |
1704 | |
1705 | if (USB_ID_VENDOR(umidi->usb_id) == 0x0582) |
1706 | snd_usbmidi_switch_roland_altsetting(umidi); |
1707 | |
1708 | if (endpoint[0].out_ep || endpoint[0].in_ep) |
1709 | return 0; |
1710 | |
1711 | intf = umidi->iface; |
1712 | if (!intf || intf->num_altsetting < 1) |
1713 | return -ENOENT; |
1714 | hostif = intf->cur_altsetting; |
1715 | intfd = get_iface_desc(hostif); |
1716 | |
1717 | for (i = 0; i < intfd->bNumEndpoints; ++i) { |
1718 | epd = get_endpoint(hostif, i); |
1719 | if (!usb_endpoint_xfer_bulk(epd) && |
1720 | !usb_endpoint_xfer_int(epd)) |
1721 | continue; |
1722 | if (out_eps < max_endpoints && |
1723 | usb_endpoint_dir_out(epd)) { |
1724 | endpoint[out_eps].out_ep = usb_endpoint_num(epd); |
1725 | if (usb_endpoint_xfer_int(epd)) |
1726 | endpoint[out_eps].out_interval = epd->bInterval; |
1727 | ++out_eps; |
1728 | } |
1729 | if (in_eps < max_endpoints && |
1730 | usb_endpoint_dir_in(epd)) { |
1731 | endpoint[in_eps].in_ep = usb_endpoint_num(epd); |
1732 | if (usb_endpoint_xfer_int(epd)) |
1733 | endpoint[in_eps].in_interval = epd->bInterval; |
1734 | ++in_eps; |
1735 | } |
1736 | } |
1737 | return (out_eps || in_eps) ? 0 : -ENOENT; |
1738 | } |
1739 | |
1740 | /* |
1741 | * Detects the endpoints for one-port-per-endpoint protocols. |
1742 | */ |
1743 | static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi, |
1744 | struct snd_usb_midi_endpoint_info* endpoints) |
1745 | { |
1746 | int err, i; |
1747 | |
1748 | err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS); |
1749 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1750 | if (endpoints[i].out_ep) |
1751 | endpoints[i].out_cables = 0x0001; |
1752 | if (endpoints[i].in_ep) |
1753 | endpoints[i].in_cables = 0x0001; |
1754 | } |
1755 | return err; |
1756 | } |
1757 | |
1758 | /* |
1759 | * Detects the endpoints and ports of Yamaha devices. |
1760 | */ |
1761 | static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi, |
1762 | struct snd_usb_midi_endpoint_info* endpoint) |
1763 | { |
1764 | struct usb_interface* intf; |
1765 | struct usb_host_interface *hostif; |
1766 | struct usb_interface_descriptor* intfd; |
1767 | uint8_t* cs_desc; |
1768 | |
1769 | intf = umidi->iface; |
1770 | if (!intf) |
1771 | return -ENOENT; |
1772 | hostif = intf->altsetting; |
1773 | intfd = get_iface_desc(hostif); |
1774 | if (intfd->bNumEndpoints < 1) |
1775 | return -ENOENT; |
1776 | |
1777 | /* |
1778 | * For each port there is one MIDI_IN/OUT_JACK descriptor, not |
1779 | * necessarily with any useful contents. So simply count 'em. |
1780 | */ |
1781 | for (cs_desc = hostif->extra; |
1782 | cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2; |
1783 | cs_desc += cs_desc[0]) { |
1784 | if (cs_desc[1] == USB_DT_CS_INTERFACE) { |
1785 | if (cs_desc[2] == UAC_MIDI_IN_JACK) |
1786 | endpoint->in_cables = (endpoint->in_cables << 1) | 1; |
1787 | else if (cs_desc[2] == UAC_MIDI_OUT_JACK) |
1788 | endpoint->out_cables = (endpoint->out_cables << 1) | 1; |
1789 | } |
1790 | } |
1791 | if (!endpoint->in_cables && !endpoint->out_cables) |
1792 | return -ENOENT; |
1793 | |
1794 | return snd_usbmidi_detect_endpoints(umidi, endpoint, 1); |
1795 | } |
1796 | |
1797 | /* |
1798 | * Creates the endpoints and their ports for Midiman devices. |
1799 | */ |
1800 | static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi, |
1801 | struct snd_usb_midi_endpoint_info* endpoint) |
1802 | { |
1803 | struct snd_usb_midi_endpoint_info ep_info; |
1804 | struct usb_interface* intf; |
1805 | struct usb_host_interface *hostif; |
1806 | struct usb_interface_descriptor* intfd; |
1807 | struct usb_endpoint_descriptor* epd; |
1808 | int cable, err; |
1809 | |
1810 | intf = umidi->iface; |
1811 | if (!intf) |
1812 | return -ENOENT; |
1813 | hostif = intf->altsetting; |
1814 | intfd = get_iface_desc(hostif); |
1815 | /* |
1816 | * The various MidiSport devices have more or less random endpoint |
1817 | * numbers, so we have to identify the endpoints by their index in |
1818 | * the descriptor array, like the driver for that other OS does. |
1819 | * |
1820 | * There is one interrupt input endpoint for all input ports, one |
1821 | * bulk output endpoint for even-numbered ports, and one for odd- |
1822 | * numbered ports. Both bulk output endpoints have corresponding |
1823 | * input bulk endpoints (at indices 1 and 3) which aren't used. |
1824 | */ |
1825 | if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) { |
1826 | snd_printdd(KERN_ERR "not enough endpoints\n"); |
1827 | return -ENOENT; |
1828 | } |
1829 | |
1830 | epd = get_endpoint(hostif, 0); |
1831 | if (!usb_endpoint_dir_in(epd) || !usb_endpoint_xfer_int(epd)) { |
1832 | snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n"); |
1833 | return -ENXIO; |
1834 | } |
1835 | epd = get_endpoint(hostif, 2); |
1836 | if (!usb_endpoint_dir_out(epd) || !usb_endpoint_xfer_bulk(epd)) { |
1837 | snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n"); |
1838 | return -ENXIO; |
1839 | } |
1840 | if (endpoint->out_cables > 0x0001) { |
1841 | epd = get_endpoint(hostif, 4); |
1842 | if (!usb_endpoint_dir_out(epd) || |
1843 | !usb_endpoint_xfer_bulk(epd)) { |
1844 | snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n"); |
1845 | return -ENXIO; |
1846 | } |
1847 | } |
1848 | |
1849 | ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
1850 | ep_info.out_interval = 0; |
1851 | ep_info.out_cables = endpoint->out_cables & 0x5555; |
1852 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); |
1853 | if (err < 0) |
1854 | return err; |
1855 | |
1856 | ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
1857 | ep_info.in_interval = get_endpoint(hostif, 0)->bInterval; |
1858 | ep_info.in_cables = endpoint->in_cables; |
1859 | err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]); |
1860 | if (err < 0) |
1861 | return err; |
1862 | |
1863 | if (endpoint->out_cables > 0x0001) { |
1864 | ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
1865 | ep_info.out_cables = endpoint->out_cables & 0xaaaa; |
1866 | err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]); |
1867 | if (err < 0) |
1868 | return err; |
1869 | } |
1870 | |
1871 | for (cable = 0; cable < 0x10; ++cable) { |
1872 | if (endpoint->out_cables & (1 << cable)) |
1873 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable, |
1874 | &umidi->endpoints[cable & 1].out->ports[cable].substream); |
1875 | if (endpoint->in_cables & (1 << cable)) |
1876 | snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable, |
1877 | &umidi->endpoints[0].in->ports[cable].substream); |
1878 | } |
1879 | return 0; |
1880 | } |
1881 | |
1882 | static struct snd_rawmidi_global_ops snd_usbmidi_ops = { |
1883 | .get_port_info = snd_usbmidi_get_port_info, |
1884 | }; |
1885 | |
1886 | static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi, |
1887 | int out_ports, int in_ports) |
1888 | { |
1889 | struct snd_rawmidi *rmidi; |
1890 | int err; |
1891 | |
1892 | err = snd_rawmidi_new(umidi->card, "USB MIDI", |
1893 | umidi->next_midi_device++, |
1894 | out_ports, in_ports, &rmidi); |
1895 | if (err < 0) |
1896 | return err; |
1897 | strcpy(rmidi->name, umidi->card->shortname); |
1898 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | |
1899 | SNDRV_RAWMIDI_INFO_INPUT | |
1900 | SNDRV_RAWMIDI_INFO_DUPLEX; |
1901 | rmidi->ops = &snd_usbmidi_ops; |
1902 | rmidi->private_data = umidi; |
1903 | rmidi->private_free = snd_usbmidi_rawmidi_free; |
1904 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops); |
1905 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops); |
1906 | |
1907 | umidi->rmidi = rmidi; |
1908 | return 0; |
1909 | } |
1910 | |
1911 | /* |
1912 | * Temporarily stop input. |
1913 | */ |
1914 | void snd_usbmidi_input_stop(struct list_head* p) |
1915 | { |
1916 | struct snd_usb_midi* umidi; |
1917 | unsigned int i, j; |
1918 | |
1919 | umidi = list_entry(p, struct snd_usb_midi, list); |
1920 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
1921 | struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; |
1922 | if (ep->in) |
1923 | for (j = 0; j < INPUT_URBS; ++j) |
1924 | usb_kill_urb(ep->in->urbs[j]); |
1925 | } |
1926 | } |
1927 | |
1928 | static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep) |
1929 | { |
1930 | unsigned int i; |
1931 | |
1932 | if (!ep) |
1933 | return; |
1934 | for (i = 0; i < INPUT_URBS; ++i) { |
1935 | struct urb* urb = ep->urbs[i]; |
1936 | urb->dev = ep->umidi->dev; |
1937 | snd_usbmidi_submit_urb(urb, GFP_KERNEL); |
1938 | } |
1939 | } |
1940 | |
1941 | /* |
1942 | * Resume input after a call to snd_usbmidi_input_stop(). |
1943 | */ |
1944 | void snd_usbmidi_input_start(struct list_head* p) |
1945 | { |
1946 | struct snd_usb_midi* umidi; |
1947 | int i; |
1948 | |
1949 | umidi = list_entry(p, struct snd_usb_midi, list); |
1950 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) |
1951 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); |
1952 | } |
1953 | |
1954 | /* |
1955 | * Creates and registers everything needed for a MIDI streaming interface. |
1956 | */ |
1957 | int snd_usbmidi_create(struct snd_card *card, |
1958 | struct usb_interface* iface, |
1959 | struct list_head *midi_list, |
1960 | const struct snd_usb_audio_quirk* quirk) |
1961 | { |
1962 | struct snd_usb_midi* umidi; |
1963 | struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS]; |
1964 | int out_ports, in_ports; |
1965 | int i, err; |
1966 | |
1967 | umidi = kzalloc(sizeof(*umidi), GFP_KERNEL); |
1968 | if (!umidi) |
1969 | return -ENOMEM; |
1970 | umidi->dev = interface_to_usbdev(iface); |
1971 | umidi->card = card; |
1972 | umidi->iface = iface; |
1973 | umidi->quirk = quirk; |
1974 | umidi->usb_protocol_ops = &snd_usbmidi_standard_ops; |
1975 | init_timer(&umidi->error_timer); |
1976 | spin_lock_init(&umidi->disc_lock); |
1977 | mutex_init(&umidi->mutex); |
1978 | umidi->usb_id = USB_ID(le16_to_cpu(umidi->dev->descriptor.idVendor), |
1979 | le16_to_cpu(umidi->dev->descriptor.idProduct)); |
1980 | umidi->error_timer.function = snd_usbmidi_error_timer; |
1981 | umidi->error_timer.data = (unsigned long)umidi; |
1982 | |
1983 | /* detect the endpoint(s) to use */ |
1984 | memset(endpoints, 0, sizeof(endpoints)); |
1985 | switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) { |
1986 | case QUIRK_MIDI_STANDARD_INTERFACE: |
1987 | err = snd_usbmidi_get_ms_info(umidi, endpoints); |
1988 | if (umidi->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */ |
1989 | umidi->usb_protocol_ops = |
1990 | &snd_usbmidi_maudio_broken_running_status_ops; |
1991 | break; |
1992 | case QUIRK_MIDI_US122L: |
1993 | umidi->usb_protocol_ops = &snd_usbmidi_122l_ops; |
1994 | /* fall through */ |
1995 | case QUIRK_MIDI_FIXED_ENDPOINT: |
1996 | memcpy(&endpoints[0], quirk->data, |
1997 | sizeof(struct snd_usb_midi_endpoint_info)); |
1998 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); |
1999 | break; |
2000 | case QUIRK_MIDI_YAMAHA: |
2001 | err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]); |
2002 | break; |
2003 | case QUIRK_MIDI_MIDIMAN: |
2004 | umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops; |
2005 | memcpy(&endpoints[0], quirk->data, |
2006 | sizeof(struct snd_usb_midi_endpoint_info)); |
2007 | err = 0; |
2008 | break; |
2009 | case QUIRK_MIDI_NOVATION: |
2010 | umidi->usb_protocol_ops = &snd_usbmidi_novation_ops; |
2011 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2012 | break; |
2013 | case QUIRK_MIDI_FASTLANE: |
2014 | umidi->usb_protocol_ops = &snd_usbmidi_raw_ops; |
2015 | /* |
2016 | * Interface 1 contains isochronous endpoints, but with the same |
2017 | * numbers as in interface 0. Since it is interface 1 that the |
2018 | * USB core has most recently seen, these descriptors are now |
2019 | * associated with the endpoint numbers. This will foul up our |
2020 | * attempts to submit bulk/interrupt URBs to the endpoints in |
2021 | * interface 0, so we have to make sure that the USB core looks |
2022 | * again at interface 0 by calling usb_set_interface() on it. |
2023 | */ |
2024 | usb_set_interface(umidi->dev, 0, 0); |
2025 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2026 | break; |
2027 | case QUIRK_MIDI_EMAGIC: |
2028 | umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops; |
2029 | memcpy(&endpoints[0], quirk->data, |
2030 | sizeof(struct snd_usb_midi_endpoint_info)); |
2031 | err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1); |
2032 | break; |
2033 | case QUIRK_MIDI_CME: |
2034 | umidi->usb_protocol_ops = &snd_usbmidi_cme_ops; |
2035 | err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); |
2036 | break; |
2037 | default: |
2038 | snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); |
2039 | err = -ENXIO; |
2040 | break; |
2041 | } |
2042 | if (err < 0) { |
2043 | kfree(umidi); |
2044 | return err; |
2045 | } |
2046 | |
2047 | /* create rawmidi device */ |
2048 | out_ports = 0; |
2049 | in_ports = 0; |
2050 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { |
2051 | out_ports += hweight16(endpoints[i].out_cables); |
2052 | in_ports += hweight16(endpoints[i].in_cables); |
2053 | } |
2054 | err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports); |
2055 | if (err < 0) { |
2056 | kfree(umidi); |
2057 | return err; |
2058 | } |
2059 | |
2060 | /* create endpoint/port structures */ |
2061 | if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN) |
2062 | err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]); |
2063 | else |
2064 | err = snd_usbmidi_create_endpoints(umidi, endpoints); |
2065 | if (err < 0) { |
2066 | snd_usbmidi_free(umidi); |
2067 | return err; |
2068 | } |
2069 | |
2070 | list_add_tail(&umidi->list, midi_list); |
2071 | |
2072 | for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) |
2073 | snd_usbmidi_input_start_ep(umidi->endpoints[i].in); |
2074 | return 0; |
2075 | } |
2076 | |
2077 | EXPORT_SYMBOL(snd_usbmidi_create); |
2078 | EXPORT_SYMBOL(snd_usbmidi_input_stop); |
2079 | EXPORT_SYMBOL(snd_usbmidi_input_start); |
2080 | EXPORT_SYMBOL(snd_usbmidi_disconnect); |
2081 |
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