2 * 32bit -> 64bit ioctl wrapper for PCM API
3 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
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.
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.
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
21 /* This file included from pcm_native.c */
23 #include <linux/compat.h>
24 #include <linux/slab.h>
26 static int snd_pcm_ioctl_delay_compat(struct snd_pcm_substream *substream,
29 snd_pcm_sframes_t delay;
33 fs = snd_enter_user();
34 err = snd_pcm_delay(substream, &delay);
38 if (put_user(delay, src))
43 static int snd_pcm_ioctl_rewind_compat(struct snd_pcm_substream *substream,
46 snd_pcm_uframes_t frames;
49 if (get_user(frames, src))
51 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
52 err = snd_pcm_playback_rewind(substream, frames);
54 err = snd_pcm_capture_rewind(substream, frames);
55 if (put_user(err, src))
57 return err < 0 ? err : 0;
60 static int snd_pcm_ioctl_forward_compat(struct snd_pcm_substream *substream,
63 snd_pcm_uframes_t frames;
66 if (get_user(frames, src))
68 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
69 err = snd_pcm_playback_forward(substream, frames);
71 err = snd_pcm_capture_forward(substream, frames);
72 if (put_user(err, src))
74 return err < 0 ? err : 0;
77 struct snd_pcm_hw_params32 {
79 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */
80 struct snd_mask mres[5]; /* reserved masks */
81 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
82 struct snd_interval ires[9]; /* reserved intervals */
90 unsigned char reserved[64];
93 struct snd_pcm_sw_params32 {
101 u32 silence_threshold;
106 unsigned char reserved[56];
109 /* recalcuate the boundary within 32bit */
110 static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
112 snd_pcm_uframes_t boundary;
114 if (! runtime->buffer_size)
116 boundary = runtime->buffer_size;
117 while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
122 static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
123 struct snd_pcm_sw_params32 __user *src)
125 struct snd_pcm_sw_params params;
126 snd_pcm_uframes_t boundary;
129 memset(¶ms, 0, sizeof(params));
130 if (get_user(params.tstamp_mode, &src->tstamp_mode) ||
131 get_user(params.period_step, &src->period_step) ||
132 get_user(params.sleep_min, &src->sleep_min) ||
133 get_user(params.avail_min, &src->avail_min) ||
134 get_user(params.xfer_align, &src->xfer_align) ||
135 get_user(params.start_threshold, &src->start_threshold) ||
136 get_user(params.stop_threshold, &src->stop_threshold) ||
137 get_user(params.silence_threshold, &src->silence_threshold) ||
138 get_user(params.silence_size, &src->silence_size) ||
139 get_user(params.tstamp_type, &src->tstamp_type) ||
140 get_user(params.proto, &src->proto))
143 * Check silent_size parameter. Since we have 64bit boundary,
144 * silence_size must be compared with the 32bit boundary.
146 boundary = recalculate_boundary(substream->runtime);
147 if (boundary && params.silence_size >= boundary)
148 params.silence_size = substream->runtime->boundary;
149 err = snd_pcm_sw_params(substream, ¶ms);
152 if (boundary && put_user(boundary, &src->boundary))
157 struct snd_pcm_channel_info32 {
164 static int snd_pcm_ioctl_channel_info_compat(struct snd_pcm_substream *substream,
165 struct snd_pcm_channel_info32 __user *src)
167 struct snd_pcm_channel_info info;
170 if (get_user(info.channel, &src->channel) ||
171 get_user(info.offset, &src->offset) ||
172 get_user(info.first, &src->first) ||
173 get_user(info.step, &src->step))
175 err = snd_pcm_channel_info(substream, &info);
178 if (put_user(info.channel, &src->channel) ||
179 put_user(info.offset, &src->offset) ||
180 put_user(info.first, &src->first) ||
181 put_user(info.step, &src->step))
186 struct snd_pcm_status32 {
188 struct compat_timespec trigger_tstamp;
189 struct compat_timespec tstamp;
197 u32 reserved_alignment;
198 struct compat_timespec audio_tstamp;
199 unsigned char reserved[56-sizeof(struct compat_timespec)];
200 } __attribute__((packed));
203 static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
204 struct snd_pcm_status32 __user *src)
206 struct snd_pcm_status status;
209 err = snd_pcm_status(substream, &status);
213 if (put_user(status.state, &src->state) ||
214 compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
215 compat_put_timespec(&status.tstamp, &src->tstamp) ||
216 put_user(status.appl_ptr, &src->appl_ptr) ||
217 put_user(status.hw_ptr, &src->hw_ptr) ||
218 put_user(status.delay, &src->delay) ||
219 put_user(status.avail, &src->avail) ||
220 put_user(status.avail_max, &src->avail_max) ||
221 put_user(status.overrange, &src->overrange) ||
222 put_user(status.suspended_state, &src->suspended_state) ||
223 compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp))
229 /* both for HW_PARAMS and HW_REFINE */
230 static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
232 struct snd_pcm_hw_params32 __user *data32)
234 struct snd_pcm_hw_params *data;
235 struct snd_pcm_runtime *runtime;
238 if (! (runtime = substream->runtime))
241 /* only fifo_size is different, so just copy all */
242 data = memdup_user(data32, sizeof(*data32));
244 return PTR_ERR(data);
247 err = snd_pcm_hw_refine(substream, data);
249 err = snd_pcm_hw_params(substream, data);
252 if (copy_to_user(data32, data, sizeof(*data32)) ||
253 put_user(data->fifo_size, &data32->fifo_size)) {
259 unsigned int new_boundary = recalculate_boundary(runtime);
261 runtime->boundary = new_boundary;
277 static int snd_pcm_ioctl_xferi_compat(struct snd_pcm_substream *substream,
278 int dir, struct snd_xferi32 __user *data32)
284 if (! substream->runtime)
286 if (substream->stream != dir)
288 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN)
291 if (get_user(buf, &data32->buf) ||
292 get_user(frames, &data32->frames))
295 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
296 err = snd_pcm_lib_write(substream, compat_ptr(buf), frames);
298 err = snd_pcm_lib_read(substream, compat_ptr(buf), frames);
301 /* copy the result */
302 if (put_user(err, &data32->result))
308 /* snd_xfern needs remapping of bufs */
311 u32 bufs; /* this is void **; */
316 * xfern ioctl nees to copy (up to) 128 pointers on stack.
317 * although we may pass the copied pointers through f_op->ioctl, but the ioctl
318 * handler there expands again the same 128 pointers on stack, so it is better
319 * to handle the function (calling pcm_readv/writev) directly in this handler.
321 static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
322 int dir, struct snd_xfern32 __user *data32)
325 compat_caddr_t __user *bufptr;
330 if (! substream->runtime)
332 if (substream->stream != dir)
335 if ((ch = substream->runtime->channels) > 128)
337 if (get_user(buf, &data32->bufs) ||
338 get_user(frames, &data32->frames))
340 bufptr = compat_ptr(buf);
341 bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL);
344 for (i = 0; i < ch; i++) {
346 if (get_user(ptr, bufptr)) {
350 bufs[i] = compat_ptr(ptr);
353 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
354 err = snd_pcm_lib_writev(substream, bufs, frames);
356 err = snd_pcm_lib_readv(substream, bufs, frames);
358 if (put_user(err, &data32->result))
366 struct snd_pcm_mmap_status32 {
370 struct compat_timespec tstamp;
372 struct compat_timespec audio_tstamp;
373 } __attribute__((packed));
375 struct snd_pcm_mmap_control32 {
380 struct snd_pcm_sync_ptr32 {
383 struct snd_pcm_mmap_status32 status;
384 unsigned char reserved[64];
387 struct snd_pcm_mmap_control32 control;
388 unsigned char reserved[64];
390 } __attribute__((packed));
392 static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
393 struct snd_pcm_sync_ptr32 __user *src)
395 struct snd_pcm_runtime *runtime = substream->runtime;
396 volatile struct snd_pcm_mmap_status *status;
397 volatile struct snd_pcm_mmap_control *control;
399 struct snd_pcm_mmap_control scontrol;
400 struct snd_pcm_mmap_status sstatus;
401 snd_pcm_uframes_t boundary;
404 if (snd_BUG_ON(!runtime))
407 if (get_user(sflags, &src->flags) ||
408 get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
409 get_user(scontrol.avail_min, &src->c.control.avail_min))
411 if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
412 err = snd_pcm_hwsync(substream);
416 status = runtime->status;
417 control = runtime->control;
418 boundary = recalculate_boundary(runtime);
420 boundary = 0x7fffffff;
421 snd_pcm_stream_lock_irq(substream);
422 /* FIXME: we should consider the boundary for the sync from app */
423 if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
424 control->appl_ptr = scontrol.appl_ptr;
426 scontrol.appl_ptr = control->appl_ptr % boundary;
427 if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
428 control->avail_min = scontrol.avail_min;
430 scontrol.avail_min = control->avail_min;
431 sstatus.state = status->state;
432 sstatus.hw_ptr = status->hw_ptr % boundary;
433 sstatus.tstamp = status->tstamp;
434 sstatus.suspended_state = status->suspended_state;
435 sstatus.audio_tstamp = status->audio_tstamp;
436 snd_pcm_stream_unlock_irq(substream);
437 if (put_user(sstatus.state, &src->s.status.state) ||
438 put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
439 compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
440 put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
441 compat_put_timespec(&sstatus.audio_tstamp,
442 &src->s.status.audio_tstamp) ||
443 put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
444 put_user(scontrol.avail_min, &src->c.control.avail_min))
454 SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
455 SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
456 SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
457 SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
458 SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
459 SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
460 SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
461 SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32),
462 SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct snd_xferi32),
463 SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
464 SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
465 SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
466 SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
470 static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
472 struct snd_pcm_file *pcm_file;
473 struct snd_pcm_substream *substream;
474 void __user *argp = compat_ptr(arg);
476 pcm_file = file->private_data;
479 substream = pcm_file->substream;
484 * When PCM is used on 32bit mode, we need to disable
485 * mmap of PCM status/control records because of the size
488 pcm_file->no_compat_mmap = 1;
491 case SNDRV_PCM_IOCTL_PVERSION:
492 case SNDRV_PCM_IOCTL_INFO:
493 case SNDRV_PCM_IOCTL_TSTAMP:
494 case SNDRV_PCM_IOCTL_TTSTAMP:
495 case SNDRV_PCM_IOCTL_HWSYNC:
496 case SNDRV_PCM_IOCTL_PREPARE:
497 case SNDRV_PCM_IOCTL_RESET:
498 case SNDRV_PCM_IOCTL_START:
499 case SNDRV_PCM_IOCTL_DROP:
500 case SNDRV_PCM_IOCTL_DRAIN:
501 case SNDRV_PCM_IOCTL_PAUSE:
502 case SNDRV_PCM_IOCTL_HW_FREE:
503 case SNDRV_PCM_IOCTL_RESUME:
504 case SNDRV_PCM_IOCTL_XRUN:
505 case SNDRV_PCM_IOCTL_LINK:
506 case SNDRV_PCM_IOCTL_UNLINK:
507 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
508 return snd_pcm_playback_ioctl1(file, substream, cmd, argp);
510 return snd_pcm_capture_ioctl1(file, substream, cmd, argp);
511 case SNDRV_PCM_IOCTL_HW_REFINE32:
512 return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
513 case SNDRV_PCM_IOCTL_HW_PARAMS32:
514 return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
515 case SNDRV_PCM_IOCTL_SW_PARAMS32:
516 return snd_pcm_ioctl_sw_params_compat(substream, argp);
517 case SNDRV_PCM_IOCTL_STATUS32:
518 return snd_pcm_status_user_compat(substream, argp);
519 case SNDRV_PCM_IOCTL_SYNC_PTR32:
520 return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
521 case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
522 return snd_pcm_ioctl_channel_info_compat(substream, argp);
523 case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
524 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
525 case SNDRV_PCM_IOCTL_READI_FRAMES32:
526 return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
527 case SNDRV_PCM_IOCTL_WRITEN_FRAMES32:
528 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp);
529 case SNDRV_PCM_IOCTL_READN_FRAMES32:
530 return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp);
531 case SNDRV_PCM_IOCTL_DELAY32:
532 return snd_pcm_ioctl_delay_compat(substream, argp);
533 case SNDRV_PCM_IOCTL_REWIND32:
534 return snd_pcm_ioctl_rewind_compat(substream, argp);
535 case SNDRV_PCM_IOCTL_FORWARD32:
536 return snd_pcm_ioctl_forward_compat(substream, argp);