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
..
_inttypes.h
_limits.h
_stdint.h
_types.h
asi.h
asm.h
asmacros.h
atomic.h
bus_common.h
bus_memio.h
bus_pio.h
bus_private.h	Further cleanup of the sparc64 busdma implementation:	2003-06-18 16:41:36 +00:00
bus.h	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
cache.h
ccr.h
clock.h
cpu.h
cpufunc.h	add support for peeking at pci busses on UltraSparc systems. This prevents	2003-06-22 01:26:08 +00:00
critical.h
db_machdep.h	BKPT_INST is supposed to be a breakpoint, not 0.	2003-06-07 18:24:37 +00:00
eeprom.h
elf.h
endian.h
exec.h
float.h
floatingpoint.h
fp.h
frame.h
fsr.h
idprom.h
ieee.h
ieeefp.h
in_cksum.h
instr.h
intr_machdep.h
iommureg.h
iommuvar.h	Further cleanup of the sparc64 busdma implementation:	2003-06-18 16:41:36 +00:00
kerneldump.h
kse.h
ktr.h
limits.h
lsu.h
md_var.h
metadata.h
mutex.h
nexusvar.h
ofw_bus.h	Add the new sparc64 OFW PCI framework, conditional on options OFW_NEWPCI	2003-07-01 14:52:47 +00:00
ofw_machdep.h
ofw_mem.h	- Declare sparc64_memreg and sparc64_nmemreg in machine/ofw_mem.h.	2003-06-07 18:29:29 +00:00
ofw_nexus.h
ofw_upa.h
param.h	Migrate the thread stack management functions from the machine-dependent	2003-06-14 23:23:55 +00:00
pcb.h
pcpu.h
pmap.h
proc.h
profile.h
pstate.h
ptrace.h
reg.h
reloc.h
resource.h
runq.h
setjmp.h
sigframe.h
signal.h
smp.h
stdarg.h
sysarch.h
tick.h
tlb.h
trap.h
tsb.h
tstate.h
tte.h
ucontext.h
upa.h
utrap.h
varargs.h
ver.h
vmparam.h
watch.h
wstate.h