Commit Graph

70 Commits

Author SHA1 Message Date
Mathew Kanner
222d2384ef Reduce latency when using the SNDCTL_DSP_RESET ioctl by calling
chn_resetbuf().

Submited by:	Pyun YongHyeon <yongari@kt-is.co.kr>
Approved by:	tanimura (mentor)
2004-01-20 05:30:09 +00:00
Mathew Kanner
5ee30e277a Fix a panic when kldloading a sound driver. Do this by replacing the
link-list of dev_t's with named variables.  Remove used code.

Approved by:		tanimura (mentor)
2004-01-20 03:58:57 +00:00
Poul-Henning Kamp
4555065861 As previously announced: discontinue use of makedev() call in soundcode.
This takes us a lot closer to refcounting dev_t.

This patch originally by cg@ with a few minor changes by me.

It is largely untested, but has been HEADSUP'ed twice, so presumably
people have not found any issues with it.

Submitted by:	cg@
2004-01-17 10:37:11 +00:00
Scott Long
42c3555cff Fix sound LOR problems:
dsp_open: rearrange to only hold one lock at a time

dsp_close: ditto

mixer_hwvol_init: delete locking, the only consumer seems to
be the ess driver and it only call it a creation time, I
think the device will be stable across the sleepable malloc.

cmi interrupt routine: Release locks while caller chn_intr,
either this or do what emu10k1 does which is have no locks
at in the interrupt handler.

Submitted by:	mat@cnd.mcgill.ca
2003-11-11 05:38:28 +00:00
Cameron Grant
3f22597838 update my email address. 2003-09-07 16:28:03 +00:00
Cameron Grant
b9c6d8cdcf modify comments 2003-08-15 02:31:13 +00:00
Matthew N. Dodd
f1e875be01 Set a lower bound on fragment size rather than returning a failure
when the user specifies a maximum fragment size < 2.

This is the behavior that Linux provides and fixes the problem I've
observed in Tribes2 where sounds effects are delayed by 1/2 a second.
2003-06-26 13:13:18 +00:00
Orion Hodson
4f3204ef22 Fix lock order reversal when opening device and chn_reset fails.
Submitted by: Jan-Espen Pettersen <sigsegv@leakingmemory.org>
Tested by: Georg Funk <georgfunk@web.de>
2003-05-01 16:31:21 +00:00
Jake Burkholder
227f9a1c58 - Add vm_paddr_t, a physical address type. This is required for systems
where physical addresses larger than virtual addresses, such as i386s
  with PAE.
- Use this to represent physical addresses in the MI vm system and in the
  i386 pmap code.  This also changes the paddr parameter to d_mmap_t.
- Fix printf formats to handle physical addresses >4G in the i386 memory
  detection code, and due to kvtop returning vm_paddr_t instead of u_long.

Note that this is a name change only; vm_paddr_t is still the same as
vm_offset_t on all currently supported platforms.

Sponsored by:	DARPA, Network Associates Laboratories
Discussed with:	re, phk (cdevsw change)
2003-03-25 00:07:06 +00:00
Poul-Henning Kamp
7ac40f5f59 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
Maxime Henrion
07159f9c56 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
Brian Feldman
d00d7d5c39 Sound devices were being leaked by dsp_open() not actually releasing the
channels it allocates if chn_reset() on them resulted in failure.
ARROW'D!
2003-02-11 16:58:54 +00:00
Brian Feldman
a8be3e63ce Fix the duplicate unlock of the pcm read channel in certain cases.
Reviewed by:	cg
2003-01-05 07:32:33 +00:00
Orion Hodson
47d5a0f3e5 Marginally simplify dsp_open error handling by adding an early test to
determine liklihood of opening device in requested directions.  Makes for
simpler error handling and change should close kern/35004.

PR: kern/35004.
2002-08-28 15:19:30 +00:00
Orion Hodson
2296709020 Back out last commit. Needs slightly more subtle handling. 2002-08-20 08:02:56 +00:00
Orion Hodson
42e67fd3e7 Apply reference counting patch. Fixes problem of two applications
opening the device, eg one read only and one write only, and the
reference count being non-zero when both exit rendering device
permanently busy.

PR:		kern/35004
Submitted by:	Bill Wells
MFC after:	3 days
2002-08-18 14:17:06 +00:00
Scott Long
436c9b651a Fix code that had rotted behind debugging macros.
Approved by:	cg (in principle)
MFC after:	2 weeks
2002-01-25 04:14:12 +00:00
Cameron Grant
095159ecd1 add more error checking to open of /dev/dsp* and /dev/audio* - if the
default format for the chosen subdevice cannot be obtained return an error
instead of returning success with an indeteterminate format selected.

note that this should never happen once the feederchain builder works for
recording.
2002-01-23 04:44:03 +00:00
Cameron Grant
1c72c53f4e don't allow mmap beyond the end of the buffer
Submitted by:	Philippe Anel <philippe.anel@noos.fr> (partially)
2002-01-23 04:32:18 +00:00
Cameron Grant
16a33022e7 fix SNDCTL_DSP_GETISPACE behaviour 2001-10-24 12:40:54 +00:00
George C A Reid
5c25132af5 - Correctly increment the channel refcount in dsp_open() such that it is
no longer possible to unload the driver module while sound is playing
  (which resulted in a panic).
- Fix a similar problem with the sndstat device that I found while looking
  at the above.
- Append a newline character to error messages in pcm_unregister()

Reviewed by:	cg
MFC after:	10 days
2001-09-14 20:26:03 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
Cameron Grant
506a5308bc add a method for recording of specific channels for devices with more than
one hardware record channel.  new devices, /dev/dsprX.Y where X is unit
number and Y is channel index.
2001-09-05 16:28:41 +00:00
Cameron Grant
334326a17f handle bogus values passed to SOUND_PCM_WRITE_CHANNELS/SNDCTL_DSP_CHANNELS
ioctls better- if 0 is passed, return the current setting.  if 1 or 2 are
passed, behave accordingly.  treat values >2 as 2.

PR:		kern/29964
2001-08-23 12:21:12 +00:00
Cameron Grant
92f39b2c05 MFS: make SNDCTL_DSP_SETTRIGGER work 2001-08-23 11:58:38 +00:00
Cameron Grant
67b1dce3bc many changes:
* add new channels to the end of the list so channels used in order of
addition

* de-globalise definition of struct snddev_info and provide accessor
functions where necessary.

* move the $FreeBSD$ tag in each .c file into a macro and allow the
/dev/sndstat handler to display these when set to maximum verbosity to aid
debugging.

* allow each device to register its own sndstat handler to reduce the amount
of groping sndstat must do in foreign structs.
2001-08-23 11:30:52 +00:00
Cameron Grant
c76f01164f don't set a flag that is already set 2001-07-01 18:57:16 +00:00
Cameron Grant
aa0baad55b tidy up/simplify dsp_clone() 2001-06-27 19:51:02 +00:00
Cameron Grant
f00f162a5f add defines and ifdefs so this code will compile on 4.x
add spls so this code will work on 4.x
2001-06-23 17:36:51 +00:00
Cameron Grant
74ffd13814 use devclass_get_maxunit() correctly 2001-06-18 00:10:47 +00:00
Cameron Grant
faeebea2b8 revise dsp_clone() to return the first nonbusy channel instead of simply
cycling channel numbers.

remove unused fields from struct snddev_info.
2001-06-17 23:23:06 +00:00
Cameron Grant
5210620e98 fix a potential panic in dsp_clone() if no pcm devices were detected 2001-06-17 20:15:29 +00:00
Cameron Grant
d95502a838 use a global devclass for all drivers - i'm not entirely sure why this
worked before.

mixer, dsp and sndstat are seperate devices - give them their own cdevsws
instead of demuxing requests sent to a single cdevsw.

use the si_drv1/si_drv2 fields in dev_t structures for holding information
specific to an open instance of mixer/dsp.

nuke /dev/{dsp,dspW,audio}[0-9]* links - this functionality is now provided
using cloning.

various locking fixes.
2001-06-16 21:25:10 +00:00
Cameron Grant
b8f0d9e0b2 various locking fixes, rework open logic and channel registration
PR:             kern/28084
2001-06-14 13:31:30 +00:00
Cameron Grant
285648f9d2 beginnings of virtual playback channel support
instead of using two malloced arrays for storing channel lists, use an
slist.  convert the sndstat device to use sbufs and optionally provide more
detail about channel state.

vchans are software mixed playback channels.  they are not enabled by this
commit.  they use the feeder infrastructure to emulate normal playback
channels in a manner transparent to applications, whilst providing as many
channels are desired, especially suitable for devices with only one hardware
playback channel.  in the future they will provide additional features.

those wishing to test this functionality will need to add vchan.c to
sys/conf/files and use 'sysctl -w hw.snd.pcm0.vchans' to enable it.

blocksize and auto-rate selection are not yet supported.
2001-05-27 17:22:00 +00:00
Cameron Grant
66ef8af5b0 mega-commit.
this introduces a new buffering mechanism which results in dramatic
simplification of the channel manager.

as several structures have changed, we take the opportunity to move their
definitions into the source files where they are used, make them private and
de-typedef them.

the sound drivers are updated to use snd_setup_intr instead of
bus_setup_intr, and to comply with the de-typedefed structures.

the ac97, mixer and channel layers have been updated with finegrained
locking, as have some drivers- not all though.  the rest will follow soon.
2001-03-24 23:10:29 +00:00
Cameron Grant
9a1ec7ebfd fix a panic triggerable by anyone with read/write access to the audio
devices.  opening /dev/{dsp,dspW,audio}0 and then opening a different device
from that list and closing it resulted in a panic when any operation is
performed on the first fd.

we prevent this happening by denying the second open unless it uses the same
minor device as the first.

PR:		kern/25519
2001-03-13 18:43:22 +00:00
Cameron Grant
350a5fafb1 update code dealing with snd_dbuf objects to do so using a functional interface
modify chn_setblocksize() to pick a default soft-blocksize appropriate to the
sample rate and format in use.  it will aim for a power of two size small
enough to generate block sizes of at most 20ms.  it will also set the
hard-blocksize taking into account rate/format conversions in use.

update drivers to implement setblocksize  correctly:
updated, tested: 	sb16, emu10k1, maestro, solo
updated, untested: 	ad1816, ess, mss, sb8, csa
not updated: 		ds1, es137x, fm801, neomagic, t4dwave, via82c686

i lack hardware to test: ad1816, csa, fm801, neomagic
others will be updated/tested in the next few days.
2000-12-23 03:16:13 +00:00
Cameron Grant
0f55ac6c1a kobjify.
this gives us several benefits, including:

* easier extensibility- new optional methods can be added to
  ac97/mixer/channel classes without having to fixup every driver.

* forward compatibility for drivers, provided no new mandatory methods are
  added.
2000-12-18 01:36:41 +00:00
Cameron Grant
41b3c72639 if a channel dies, rejuvenate it on close() 2000-11-07 00:29:24 +00:00
Cameron Grant
d16b567379 implement SNDCTL_DSP_POST 2000-10-27 22:20:45 +00:00
Cameron Grant
c0960a5e91 handle AFMT_QUERY right 2000-10-26 01:34:54 +00:00
Cameron Grant
513693be6c rework feeder sytem to allow feeders in klds
modify driver capability reporting format to list every audio format
seperately- required for above and because we could not previously indicate
that mono was unsupported.

there should be no functional impact.
2000-08-20 22:18:56 +00:00
Cameron Grant
fa06efc7e6 fix SNDCTL_DSP_GETODELAY
PR:		kern/20340
Submitted by:	Takashi SHIRAI <shirai@nintendo.co.jp>
2000-08-19 18:29:46 +00:00
Nick Sayer
05a1fdb459 Simplex devices will always report EBUSY on 2nd (and subsequent)
opens if the reference count is not decremented on close.

Note that this may result in the reference count being corrupted
on full duplex devices (due to mismatching opens/closes), but the
code doesn't use the reference count for anything on full duplex
devices.
2000-08-02 22:47:44 +00:00
Cameron Grant
e04387c95a fix a bug where opening /dev/dsp twice resulted in it being busy until reboot 2000-07-30 19:36:13 +00:00
Cameron Grant
e4d5b2502d fix a bug where opening for write would not fail if channel allocation failed
when playing, if we stall for 1s with no data advancing, abort and mark the
channel dead - fail all future operations
2000-06-20 23:27:12 +00:00
Cameron Grant
1a50bd2e37 handle duplex properly in the AIOGCAP ioctl - this may (partially?) fix rat 2000-06-07 11:51:30 +00:00
Cameron Grant
94e3845ccd fix the return value of the SOUND_PCM_WRITE_CHANNELS ioctl
re-enable old pcm ioctls
2000-05-27 14:40:17 +00:00
Cameron Grant
d28089a10d move various fields from pcm_channel to snd_dbuf
improve chn_read code- don't stop/restart on overrun, just dump data

more error checking on ioctls
2000-05-26 21:55:13 +00:00