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[mirror_ubuntu-bionic-kernel.git] / sound / core / pcm_compat.c
CommitLineData
1da177e4
LT		 1/*
2 * 32bit -> 64bit ioctl wrapper for PCM API
3 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
21/* This file included from pcm_native.c */
22
23#include <linux/compat.h>
5a0e3ad6 24#include <linux/slab.h>
1da177e4 25
877211f5 26static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 27 s32 __user *src)
28{
29 snd_pcm_sframes_t delay;
e46e8ece 30 int err;
1da177e4 31
e46e8ece
JM		 32 err = snd_pcm_delay(substream, &delay);
33 if (err)
34 return err;
1da177e4
LT		 35 if (put_user(delay, src))
36 return -EFAULT;
c2c86a97 37 return 0;
1da177e4
LT		 38}
39
877211f5 40static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 41 u32 __user *src)
42{
43 snd_pcm_uframes_t frames;
44 int err;
45
46 if (get_user(frames, src))
47 return -EFAULT;
48 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
49 err = snd_pcm_playback_rewind(substream, frames);
50 else
51 err = snd_pcm_capture_rewind(substream, frames);
52 if (put_user(err, src))
53 return -EFAULT;
54 return err < 0 ? err : 0;
55}
56
877211f5 57static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
1da177e4
LT		 58 u32 __user *src)
59{
60 snd_pcm_uframes_t frames;
61 int err;
62
63 if (get_user(frames, src))
64 return -EFAULT;
65 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
66 err = snd_pcm_playback_forward(substream, frames);
67 else
68 err = snd_pcm_capture_forward(substream, frames);
69 if (put_user(err, src))
70 return -EFAULT;
71 return err < 0 ? err : 0;
72}
73
877211f5 74struct snd_pcm_hw_params32 {
1da177e4 75 u32 flags;
877211f5
TI		 76 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */
77 struct snd_mask mres[5]; /* reserved masks */
78 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
79 struct snd_interval ires[9]; /* reserved intervals */
1da177e4
LT		 80 u32 rmask;
81 u32 cmask;
82 u32 info;
83 u32 msbits;
84 u32 rate_num;
85 u32 rate_den;
86 u32 fifo_size;
87 unsigned char reserved[64];
88};
89
877211f5 90struct snd_pcm_sw_params32 {
1da177e4
LT		 91 s32 tstamp_mode;
92 u32 period_step;
93 u32 sleep_min;
94 u32 avail_min;
95 u32 xfer_align;
96 u32 start_threshold;
97 u32 stop_threshold;
98 u32 silence_threshold;
99 u32 silence_size;
100 u32 boundary;
e58c295c
TI		 101 u32 proto;
102 u32 tstamp_type;
103 unsigned char reserved[56];
1da177e4
LT		 104};
105
b2711310 106/* recalcuate the boundary within 32bit */
877211f5 107static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
b2711310
TI		 108{
109 snd_pcm_uframes_t boundary;
110
111 if (! runtime->buffer_size)
112 return 0;
113 boundary = runtime->buffer_size;
114 while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
115 boundary *= 2;
116 return boundary;
117}
118
877211f5
TI		 119static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
120 struct snd_pcm_sw_params32 __user *src)
1da177e4 121{
877211f5 122 struct snd_pcm_sw_params params;
b2711310 123 snd_pcm_uframes_t boundary;
1da177e4
LT		 124 int err;
125
126 memset(&params, 0, sizeof(params));
127 if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
128 get_user(params.period_step, &src->period_step) ||
129 get_user(params.sleep_min, &src->sleep_min) ||
130 get_user(params.avail_min, &src->avail_min) ||
131 get_user(params.xfer_align, &src->xfer_align) ||
132 get_user(params.start_threshold, &src->start_threshold) ||
133 get_user(params.stop_threshold, &src->stop_threshold) ||
134 get_user(params.silence_threshold, &src->silence_threshold) ||
e58c295c
TI		 135 get_user(params.silence_size, &src->silence_size) ||
136 get_user(params.tstamp_type, &src->tstamp_type) ||
137 get_user(params.proto, &src->proto))
1da177e4 138 return -EFAULT;
b2711310
TI		 139 /*
140 * Check silent_size parameter. Since we have 64bit boundary,
141 * silence_size must be compared with the 32bit boundary.
142 */
143 boundary = recalculate_boundary(substream->runtime);
144 if (boundary && params.silence_size >= boundary)
145 params.silence_size = substream->runtime->boundary;
1da177e4
LT		 146 err = snd_pcm_sw_params(substream, &params);
147 if (err < 0)
148 return err;
7153a558 149 if (boundary && put_user(boundary, &src->boundary))
1da177e4
LT		 150 return -EFAULT;
151 return err;
152}
153
877211f5 154struct snd_pcm_channel_info32 {
1da177e4
LT		 155 u32 channel;
156 u32 offset;
157 u32 first;
158 u32 step;
159};
160
877211f5
TI		 161static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
162 struct snd_pcm_channel_info32 __user *src)
1da177e4 163{
877211f5 164 struct snd_pcm_channel_info info;
1da177e4
LT		 165 int err;
166
167 if (get_user(info.channel, &src->channel) ||
168 get_user(info.offset, &src->offset) ||
169 get_user(info.first, &src->first) ||
170 get_user(info.step, &src->step))
171 return -EFAULT;
172 err = snd_pcm_channel_info(substream, &info);
173 if (err < 0)
174 return err;
175 if (put_user(info.channel, &src->channel) ||
176 put_user(info.offset, &src->offset) ||
177 put_user(info.first, &src->first) ||
178 put_user(info.step, &src->step))
179 return -EFAULT;
180 return err;
181}
182
513ace79
TI		 183#ifdef CONFIG_X86_X32
184/* X32 ABI has the same struct as x86-64 for snd_pcm_channel_info */
185static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
186 struct snd_pcm_channel_info __user *src);
187#define snd_pcm_ioctl_channel_info_x32(s, p) \
188 snd_pcm_channel_info_user(s, p)
189#endif /* CONFIG_X86_X32 */
190
877211f5 191struct snd_pcm_status32 {
1da177e4
LT		 192 s32 state;
193 struct compat_timespec trigger_tstamp;
194 struct compat_timespec tstamp;
195 u32 appl_ptr;
196 u32 hw_ptr;
197 s32 delay;
198 u32 avail;
199 u32 avail_max;
200 u32 overrange;
201 s32 suspended_state;
5442a73a 202 u32 audio_tstamp_data;
4eeaaeae 203 struct compat_timespec audio_tstamp;
5442a73a
PLB		 204 struct compat_timespec driver_tstamp;
205 u32 audio_tstamp_accuracy;
206 unsigned char reserved[52-2*sizeof(struct compat_timespec)];
1da177e4
LT		 207} __attribute__((packed));
208
209
877211f5 210static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
5442a73a
PLB		 211 struct snd_pcm_status32 __user *src,
212 bool ext)
1da177e4 213{
877211f5 214 struct snd_pcm_status status;
1da177e4
LT		 215 int err;
216
5442a73a
PLB		 217 memset(&status, 0, sizeof(status));
218 /*
219 * with extension, parameters are read/write,
220 * get audio_tstamp_data from user,
221 * ignore rest of status structure
222 */
223 if (ext && get_user(status.audio_tstamp_data,
224 (u32 __user *)(&src->audio_tstamp_data)))
225 return -EFAULT;
1da177e4
LT		 226 err = snd_pcm_status(substream, &status);
227 if (err < 0)
228 return err;
229
317168d0
TI		 230 if (clear_user(src, sizeof(*src)))
231 return -EFAULT;
1da177e4 232 if (put_user(status.state, &src->state) ||
4eeaaeae
PLB		 233 compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
234 compat_put_timespec(&status.tstamp, &src->tstamp) ||
1da177e4
LT		 235 put_user(status.appl_ptr, &src->appl_ptr) ||
236 put_user(status.hw_ptr, &src->hw_ptr) ||
237 put_user(status.delay, &src->delay) ||
238 put_user(status.avail, &src->avail) ||
239 put_user(status.avail_max, &src->avail_max) ||
240 put_user(status.overrange, &src->overrange) ||
4eeaaeae 241 put_user(status.suspended_state, &src->suspended_state) ||
5442a73a
PLB		 242 put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
243 compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
244 compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
245 put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
1da177e4
LT		 246 return -EFAULT;
247
248 return err;
249}
250
513ace79
TI		 251#ifdef CONFIG_X86_X32
252/* X32 ABI has 64bit timespec and 64bit alignment */
253struct snd_pcm_status_x32 {
254 s32 state;
255 u32 rsvd; /* alignment */
256 struct timespec trigger_tstamp;
257 struct timespec tstamp;
258 u32 appl_ptr;
259 u32 hw_ptr;
260 s32 delay;
261 u32 avail;
262 u32 avail_max;
263 u32 overrange;
264 s32 suspended_state;
265 u32 audio_tstamp_data;
266 struct timespec audio_tstamp;
267 struct timespec driver_tstamp;
268 u32 audio_tstamp_accuracy;
269 unsigned char reserved[52-2*sizeof(struct timespec)];
270} __packed;
271
272#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
273
274static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
275 struct snd_pcm_status_x32 __user *src,
276 bool ext)
277{
278 struct snd_pcm_status status;
279 int err;
280
281 memset(&status, 0, sizeof(status));
282 /*
283 * with extension, parameters are read/write,
284 * get audio_tstamp_data from user,
285 * ignore rest of status structure
286 */
287 if (ext && get_user(status.audio_tstamp_data,
288 (u32 __user *)(&src->audio_tstamp_data)))
289 return -EFAULT;
290 err = snd_pcm_status(substream, &status);
291 if (err < 0)
292 return err;
293
294 if (clear_user(src, sizeof(*src)))
295 return -EFAULT;
296 if (put_user(status.state, &src->state) ||
297 put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
298 put_timespec(&status.tstamp, &src->tstamp) ||
299 put_user(status.appl_ptr, &src->appl_ptr) ||
300 put_user(status.hw_ptr, &src->hw_ptr) ||
301 put_user(status.delay, &src->delay) ||
302 put_user(status.avail, &src->avail) ||
303 put_user(status.avail_max, &src->avail_max) ||
304 put_user(status.overrange, &src->overrange) ||
305 put_user(status.suspended_state, &src->suspended_state) ||
306 put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
307 put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
308 put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
309 put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
310 return -EFAULT;
311
312 return err;
313}
314#endif /* CONFIG_X86_X32 */
315
1da177e4 316/* both for HW_PARAMS and HW_REFINE */
877211f5 317static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
1da177e4 318 int refine,
877211f5 319 struct snd_pcm_hw_params32 __user *data32)
1da177e4 320{
877211f5
TI		 321 struct snd_pcm_hw_params *data;
322 struct snd_pcm_runtime *runtime;
1da177e4
LT		 323 int err;
324
325 if (! (runtime = substream->runtime))
326 return -ENOTTY;
327
43c54b8c
NB		 328 data = kmalloc(sizeof(*data), GFP_KERNEL);
329 if (!data)
330 return -ENOMEM;
331
332 /* only fifo_size (RO from userspace) is different, so just copy all */
333 if (copy_from_user(data, data32, sizeof(*data32))) {
334 err = -EFAULT;
335 goto error;
336 }
ef44a1ec 337
1da177e4
LT		 338 if (refine)
339 err = snd_pcm_hw_refine(substream, data);
340 else
341 err = snd_pcm_hw_params(substream, data);
342 if (err < 0)
343 goto error;
344 if (copy_to_user(data32, data, sizeof(*data32)) ||
345 put_user(data->fifo_size, &data32->fifo_size)) {
346 err = -EFAULT;
347 goto error;
348 }
349
7153a558
TI		 350 if (! refine) {
351 unsigned int new_boundary = recalculate_boundary(runtime);
352 if (new_boundary)
353 runtime->boundary = new_boundary;
354 }
1da177e4
LT		 355 error:
356 kfree(data);
357 return err;
358}
359
360
361/*
362 */
877211f5 363struct snd_xferi32 {
1da177e4
LT		 364 s32 result;
365 u32 buf;
366 u32 frames;
367};
368
877211f5
TI		 369static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
370 int dir, struct snd_xferi32 __user *data32)
1da177e4
LT		 371{
372 compat_caddr_t buf;
373 u32 frames;
374 int err;
375
376 if (! substream->runtime)
377 return -ENOTTY;
378 if (substream->stream != dir)
379 return -EINVAL;
380 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
381 return -EBADFD;
382
383 if (get_user(buf, &data32->buf) ||
384 get_user(frames, &data32->frames))
385 return -EFAULT;
386
387 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
388 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
389 else
390 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
391 if (err < 0)
392 return err;
393 /* copy the result */
394 if (put_user(err, &data32->result))
395 return -EFAULT;
396 return 0;
397}
398
399
400/* snd_xfern needs remapping of bufs */
877211f5 401struct snd_xfern32 {
1da177e4
LT		 402 s32 result;
403 u32 bufs; /* this is void **; */
404 u32 frames;
405};
406
407/*
408 * xfern ioctl nees to copy (up to) 128 pointers on stack.
409 * although we may pass the copied pointers through f_op->ioctl, but the ioctl
410 * handler there expands again the same 128 pointers on stack, so it is better
411 * to handle the function (calling pcm_readv/writev) directly in this handler.
412 */
877211f5
TI		 413static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
414 int dir, struct snd_xfern32 __user *data32)
1da177e4
LT		 415{
416 compat_caddr_t buf;
417 compat_caddr_t __user *bufptr;
418 u32 frames;
419 void __user **bufs;
420 int err, ch, i;
421
422 if (! substream->runtime)
423 return -ENOTTY;
424 if (substream->stream != dir)
425 return -EINVAL;
05169296
TI		 426 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
427 return -EBADFD;
1da177e4
LT		 428
429 if ((ch = substream->runtime->channels) > 128)
430 return -EINVAL;
431 if (get_user(buf, &data32->bufs) ||
432 get_user(frames, &data32->frames))
433 return -EFAULT;
434 bufptr = compat_ptr(buf);
435 bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL);
436 if (bufs == NULL)
437 return -ENOMEM;
438 for (i = 0; i < ch; i++) {
439 u32 ptr;
440 if (get_user(ptr, bufptr)) {
441 kfree(bufs);
442 return -EFAULT;
443 }
ca9380fd 444 bufs[i] = compat_ptr(ptr);
1da177e4
LT		 445 bufptr++;
446 }
447 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
448 err = snd_pcm_lib_writev(substream, bufs, frames);
449 else
450 err = snd_pcm_lib_readv(substream, bufs, frames);
451 if (err >= 0) {
452 if (put_user(err, &data32->result))
453 err = -EFAULT;
454 }
455 kfree(bufs);
456 return err;
457}
458
459
877211f5 460struct snd_pcm_mmap_status32 {
1da177e4
LT		 461 s32 state;
462 s32 pad1;
463 u32 hw_ptr;
464 struct compat_timespec tstamp;
465 s32 suspended_state;
4eeaaeae 466 struct compat_timespec audio_tstamp;
1da177e4
LT		 467} __attribute__((packed));
468
877211f5 469struct snd_pcm_mmap_control32 {
1da177e4
LT		 470 u32 appl_ptr;
471 u32 avail_min;
472};
473
877211f5 474struct snd_pcm_sync_ptr32 {
1da177e4
LT		 475 u32 flags;
476 union {
877211f5 477 struct snd_pcm_mmap_status32 status;
1da177e4
LT		 478 unsigned char reserved[64];
479 } s;
480 union {
877211f5 481 struct snd_pcm_mmap_control32 control;
1da177e4
LT		 482 unsigned char reserved[64];
483 } c;
484} __attribute__((packed));
485
877211f5
TI		 486static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
487 struct snd_pcm_sync_ptr32 __user *src)
1da177e4 488{
877211f5
TI		 489 struct snd_pcm_runtime *runtime = substream->runtime;
490 volatile struct snd_pcm_mmap_status *status;
491 volatile struct snd_pcm_mmap_control *control;
1da177e4 492 u32 sflags;
877211f5
TI		 493 struct snd_pcm_mmap_control scontrol;
494 struct snd_pcm_mmap_status sstatus;
b2711310 495 snd_pcm_uframes_t boundary;
1da177e4
LT		 496 int err;
497
7eaa943c
TI		 498 if (snd_BUG_ON(!runtime))
499 return -EINVAL;
1da177e4
LT		 500
501 if (get_user(sflags, &src->flags) ||
502 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
503 get_user(scontrol.avail_min, &src->c.control.avail_min))
504 return -EFAULT;
505 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
506 err = snd_pcm_hwsync(substream);
507 if (err < 0)
508 return err;
509 }
510 status = runtime->status;
511 control = runtime->control;
b2711310 512 boundary = recalculate_boundary(runtime);
7153a558
TI		 513 if (! boundary)
514 boundary = 0x7fffffff;
1da177e4 515 snd_pcm_stream_lock_irq(substream);
b2711310 516 /* FIXME: we should consider the boundary for the sync from app */
1da177e4
LT		 517 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
518 control->appl_ptr = scontrol.appl_ptr;
519 else
b2711310 520 scontrol.appl_ptr = control->appl_ptr % boundary;
1da177e4
LT		 521 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
522 control->avail_min = scontrol.avail_min;
523 else
524 scontrol.avail_min = control->avail_min;
525 sstatus.state = status->state;
b2711310 526 sstatus.hw_ptr = status->hw_ptr % boundary;
1da177e4
LT		 527 sstatus.tstamp = status->tstamp;
528 sstatus.suspended_state = status->suspended_state;
4eeaaeae 529 sstatus.audio_tstamp = status->audio_tstamp;
1da177e4
LT		 530 snd_pcm_stream_unlock_irq(substream);
531 if (put_user(sstatus.state, &src->s.status.state) ||
532 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
4eeaaeae 533 compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
1da177e4 534 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
4eeaaeae
PLB		 535 compat_put_timespec(&sstatus.audio_tstamp,
536 &src->s.status.audio_tstamp) ||
1da177e4
LT		 537 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
538 put_user(scontrol.avail_min, &src->c.control.avail_min))
539 return -EFAULT;
540
541 return 0;
542}
543
513ace79
TI		 544#ifdef CONFIG_X86_X32
545/* X32 ABI has 64bit timespec and 64bit alignment */
546struct snd_pcm_mmap_status_x32 {
547 s32 state;
548 s32 pad1;
549 u32 hw_ptr;
550 u32 pad2; /* alignment */
551 struct timespec tstamp;
552 s32 suspended_state;
c9adcdbc 553 s32 pad3;
513ace79
TI		 554 struct timespec audio_tstamp;
555} __packed;
556
557struct snd_pcm_mmap_control_x32 {
558 u32 appl_ptr;
559 u32 avail_min;
560};
561
562struct snd_pcm_sync_ptr_x32 {
563 u32 flags;
564 u32 rsvd; /* alignment */
565 union {
566 struct snd_pcm_mmap_status_x32 status;
567 unsigned char reserved[64];
568 } s;
569 union {
570 struct snd_pcm_mmap_control_x32 control;
571 unsigned char reserved[64];
572 } c;
573} __packed;
574
575static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
576 struct snd_pcm_sync_ptr_x32 __user *src)
577{
578 struct snd_pcm_runtime *runtime = substream->runtime;
579 volatile struct snd_pcm_mmap_status *status;
580 volatile struct snd_pcm_mmap_control *control;
581 u32 sflags;
582 struct snd_pcm_mmap_control scontrol;
583 struct snd_pcm_mmap_status sstatus;
584 snd_pcm_uframes_t boundary;
585 int err;
586
587 if (snd_BUG_ON(!runtime))
588 return -EINVAL;
589
590 if (get_user(sflags, &src->flags) ||
591 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
592 get_user(scontrol.avail_min, &src->c.control.avail_min))
593 return -EFAULT;
594 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
595 err = snd_pcm_hwsync(substream);
596 if (err < 0)
597 return err;
598 }
599 status = runtime->status;
600 control = runtime->control;
601 boundary = recalculate_boundary(runtime);
602 if (!boundary)
603 boundary = 0x7fffffff;
604 snd_pcm_stream_lock_irq(substream);
605 /* FIXME: we should consider the boundary for the sync from app */
606 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
607 control->appl_ptr = scontrol.appl_ptr;
608 else
609 scontrol.appl_ptr = control->appl_ptr % boundary;
610 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
611 control->avail_min = scontrol.avail_min;
612 else
613 scontrol.avail_min = control->avail_min;
614 sstatus.state = status->state;
615 sstatus.hw_ptr = status->hw_ptr % boundary;
616 sstatus.tstamp = status->tstamp;
617 sstatus.suspended_state = status->suspended_state;
618 sstatus.audio_tstamp = status->audio_tstamp;
619 snd_pcm_stream_unlock_irq(substream);
620 if (put_user(sstatus.state, &src->s.status.state) ||
621 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
622 put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
623 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
624 put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
625 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
626 put_user(scontrol.avail_min, &src->c.control.avail_min))
627 return -EFAULT;
628
629 return 0;
630}
631#endif /* CONFIG_X86_X32 */
1da177e4
LT		 632
633/*
634 */
635enum {
877211f5
TI		 636 SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
637 SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
638 SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
639 SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
5442a73a 640 SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
1da177e4 641 SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
877211f5 642 SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
1da177e4
LT		 643 SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
644 SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
877211f5
TI		 645 SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
646 SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
647 SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
648 SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
649 SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
513ace79
TI		 650#ifdef CONFIG_X86_X32
651 SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
652 SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
653 SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
654 SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
655#endif /* CONFIG_X86_X32 */
1da177e4
LT		 656};
657
658static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
659{
877211f5
TI		 660 struct snd_pcm_file *pcm_file;
661 struct snd_pcm_substream *substream;
1da177e4
LT		 662 void __user *argp = compat_ptr(arg);
663
664 pcm_file = file->private_data;
665 if (! pcm_file)
666 return -ENOTTY;
667 substream = pcm_file->substream;
668 if (! substream)
669 return -ENOTTY;
670
671 /*
672 * When PCM is used on 32bit mode, we need to disable
673 * mmap of PCM status/control records because of the size
674 * incompatibility.
675 */
548a648b 676 pcm_file->no_compat_mmap = 1;
1da177e4
LT		 677
678 switch (cmd) {
679 case SNDRV_PCM_IOCTL_PVERSION:
680 case SNDRV_PCM_IOCTL_INFO:
5a7f2619 681 case SNDRV_PCM_IOCTL_TSTAMP:
6b587ef9 682 case SNDRV_PCM_IOCTL_TTSTAMP:
4b671f57 683 case SNDRV_PCM_IOCTL_USER_PVERSION:
1da177e4
LT		 684 case SNDRV_PCM_IOCTL_HWSYNC:
685 case SNDRV_PCM_IOCTL_PREPARE:
686 case SNDRV_PCM_IOCTL_RESET:
687 case SNDRV_PCM_IOCTL_START:
688 case SNDRV_PCM_IOCTL_DROP:
689 case SNDRV_PCM_IOCTL_DRAIN:
690 case SNDRV_PCM_IOCTL_PAUSE:
691 case SNDRV_PCM_IOCTL_HW_FREE:
692 case SNDRV_PCM_IOCTL_RESUME:
693 case SNDRV_PCM_IOCTL_XRUN:
694 case SNDRV_PCM_IOCTL_LINK:
695 case SNDRV_PCM_IOCTL_UNLINK:
67616fed 696 return snd_pcm_common_ioctl(file, substream, cmd, argp);
1da177e4
LT		 697 case SNDRV_PCM_IOCTL_HW_REFINE32:
698 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
699 case SNDRV_PCM_IOCTL_HW_PARAMS32:
700 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
701 case SNDRV_PCM_IOCTL_SW_PARAMS32:
702 return snd_pcm_ioctl_sw_params_compat(substream, argp);
703 case SNDRV_PCM_IOCTL_STATUS32:
5442a73a
PLB		 704 return snd_pcm_status_user_compat(substream, argp, false);
705 case SNDRV_PCM_IOCTL_STATUS_EXT32:
706 return snd_pcm_status_user_compat(substream, argp, true);
1da177e4
LT		 707 case SNDRV_PCM_IOCTL_SYNC_PTR32:
708 return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
709 case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
710 return snd_pcm_ioctl_channel_info_compat(substream, argp);
711 case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
712 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
713 case SNDRV_PCM_IOCTL_READI_FRAMES32:
714 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
715 case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
716 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
717 case SNDRV_PCM_IOCTL_READN_FRAMES32:
718 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
719 case SNDRV_PCM_IOCTL_DELAY32:
720 return snd_pcm_ioctl_delay_compat(substream, argp);
721 case SNDRV_PCM_IOCTL_REWIND32:
722 return snd_pcm_ioctl_rewind_compat(substream, argp);
723 case SNDRV_PCM_IOCTL_FORWARD32:
724 return snd_pcm_ioctl_forward_compat(substream, argp);
513ace79
TI		 725#ifdef CONFIG_X86_X32
726 case SNDRV_PCM_IOCTL_STATUS_X32:
727 return snd_pcm_status_user_x32(substream, argp, false);
728 case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
729 return snd_pcm_status_user_x32(substream, argp, true);
730 case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
731 return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
732 case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
733 return snd_pcm_ioctl_channel_info_x32(substream, argp);
734#endif /* CONFIG_X86_X32 */
1da177e4
LT		 735 }
736
737 return -ENOIOCTLCMD;
738}
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