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
..
ansi.h
aout_machdep.h
asm.h
autoconf.h	Fix a grammatical nit.	2003-03-22 14:26:41 +00:00
bsd-aout.h
bswap.h
bus.h	Introduce BUS_DMA_NOCACHE, and bus_dmamem_map() of i386 supports it.	2003-01-28 01:07:51 +00:00
cdefs.h
cpu_counter.h	Replace machine/rnd.h with more appropriate name to share it	2003-02-05 13:57:50 +00:00
cpu.h
db_machdep.h
disklabel.h
ecoff_machdep.h
elf_machdep.h
endian_machdep.h
endian.h
float.h
ieee.h
ieeefp.h
int_const.h
int_fmtio.h
int_limits.h
int_mwgwtypes.h
int_types.h
intr.h
isa_machdep.h	A few ISA sound drivers like to share dma channels, and hence deferred	2003-05-09 23:51:25 +00:00
isapnp_machdep.h
kcore.h
kdbparam.h
limits.h
lock.h
locore.h
Makefile	Merge the nathanw_sa branch.	2003-01-17 21:55:23 +00:00
math.h
mcontext.h	Merge the nathanw_sa branch.	2003-01-17 21:55:23 +00:00
mips_opcode.h
param.h
pcb.h
pci_machdep.h
pmap.h
pmc.h	Implement pmc(9) -- An interface to hardware performance monitoring	2002-08-07 05:14:47 +00:00
pmon.h
proc.h
profile.h
psl.h
pte.h
ptrace.h
reg.h
regdef.h
regnum.h
reloc.h
setjmp.h
signal.h
stdarg.h
trap.h
types.h
varargs.h
vmparam.h