NetBSD/sys/arch/mvmeppc
fvdl d88cf589cb A few ISA sound drivers like to share dma channels, and hence deferred
isa_dmamap_create() calls to their open/close entrypoints. This worked
with some luck, but broke on i386 when _bus_dmamap_create started
to allocate bounce buffers upfront, since memory below 16M may well
not be available when the sound devices is opened for the Nth time.

To fix this, create a new simple interface, isa_drq_alloc/isa_drq_free,
wrappers around already existing bitmask macros. These are expected
to be used before an isa_dmamap_create call, and after an
isa_dmamap_destroy call, respectively. For the sb and ad1848 drivers,
they're deferred until open/close.

All isa_dmamap_create calls can now use BUS_DMA_ALLOCNOW and be done
at attach time.
2003-05-09 23:51:25 +00:00
..
compile Rework how KERNOBJDIR functions; now it's always determined with 2003-01-06 17:40:18 +00:00
conf Add ksyms device major. 2003-04-25 21:10:46 +00:00
include A few ISA sound drivers like to share dma channels, and hence deferred 2003-05-09 23:51:25 +00:00
isa Move definition of ISA_DMA_BOUNCE_THRESHOLD to dev/isa/isareg.h. 2003-05-05 12:55:41 +00:00
mvmeppc Change return type of readdisklabel() to const char * 2003-05-02 08:45:10 +00:00
pci Switch/adapt to new bus space infrastructure. 2003-03-18 16:40:18 +00:00
stand Use ${PRINTOBJDIR} rather than rolling our own. This makes parallel 2002-05-31 13:46:00 +00:00
Makefile Rework how KERNOBJDIR functions; now it's always determined with 2003-01-06 17:40:18 +00:00