Commit Graph

10 Commits

Author SHA1 Message Date
Scott Long
f6b1c44d1f Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
Cameron Grant
0586ff0d84 if the list of supported formats is empty, fail the attach instead of
panicing later.  this is a band-aid pending further investigation.

MFC After:	7 days
Approved by:	re
2002-11-25 17:03:39 +00:00
Josef Karthauser
8ecdcb3ff3 Packed structures are defined differently in older gcc's, like the one
currently in -stable.  Put the exception into usb.h instead of having it
hard coded in the sound code.
2002-11-06 21:37:21 +00:00
Bruce Evans
760e2cb04a Fixed editing errors in rev.1.4 which manifested as printf format errors
at compile time and probably as panics at runtime.
2002-08-25 01:32:22 +00:00
Josef Karthauser
3b7efc56d0 Use the hw.usb sysctl tree instead of debug.usb.
Requested by:	imp
2002-08-08 12:05:51 +00:00
Josef Karthauser
528d1a7fbc Replace the FOO_DEBUG definitions with USB_DEBUG, and switch the
debugging levels to off by default.  Now that debug levels can be
tweaked by sysctl we don't need to go through hoops to get the
different usb parts to produce debug data.
2002-07-31 14:34:36 +00:00
Josef Karthauser
6ada40b009 Make this compile with the debugging options switched on. 2002-07-31 14:27:40 +00:00
Josef Karthauser
0e6b196686 Get bored with hard coded debug level variables and introduce a debug.usb
sysctl tree for tweaking them real-time.

Reviewed by:	iedowse
2002-07-31 13:33:55 +00:00
Peter Wemm
7c65416558 Make this compile.
uaudio.c:1822: warning: `uaudio_ctl_get' defined but not used
2002-07-22 00:11:35 +00:00
Nick Sayer
d807a231a2 Add uaudio -- a USB audio device driver.
This driver actually works slightly better on -stable than on -current
(the system locks on detach on -current), so it should be MFC'd somewhat
sooner.

This driver currently points out a difficulty in the sound device framework.
The PCM unregister routine is allowed to refuse the detach if the device is
in use. In the case of a USB device, however, this unregistration is much more
mandatory in nature, since the device is *actually* gone when this call is
made. The sound subsystem really should not refuse an unregistration and
should take its own steps to reject further I/O. As a result, if you detach
a USB sound device while it is in use, you can expect a panic shortly
thereafter.

This device cannot currently record audio. Some routines are unwritten as
of yet in uaudio.c to support recording.

This device hangs my -current box on detach. I don't know why. This does
not happen on my -stable machine.

Obtained from:	Hiroyuki Aizu
MFC after:	2 weeks
2002-07-21 17:28:50 +00:00