now lives in dev/ic, wd now lives in dev/ata. there's now a 'ata'
interface attribute defined in conf/files, but wdc can't go there
yet because some ports still use private versions based on the old
ISA version.
-base address 0x308 is supported by more Wangtek QIC tapes than 0x300
-Ultrastor ISA SCSI adapters can't be set to base address 0x334
(changed to 0x340)
written by chuck cranor. thanks to mycroft for helping me find the
one little line of code i accidentally deleted while merging it.
this is not enabled by default. `options MACHINE_NEW_NONCONTIG'
will use this code. eventually, this should go into <machine/vmparam.h>
insteaed of MACHINE_NONCONTIG.
performance hit, and on an 80386 processor, it most certainly is. Pull it
from the GENERIC (and DISKLESS "generic") kernels--configure it in
yourself if you actually need it.
16M, thus eating up all candidate bounce pages, which are not allocated
until autoconfiguration runs, by deferring allocation of the buffer
cache pages until after autoconfiguration has run.
XXX This is safe because the i386 port doesn't read any disklabels
XXX during autoconfiguration.
ourselves, but this can still happen on a 386 in copyout & friends.
Fixes pmap_changebit panics seen on 386s. Thanks to Juergen Hannken-Illjes
for providing detailed info on bug occurances.
"struct cpu_cpuid_family", so that we can have a cpu_setup function per
known cpu type. For now use it only for cyrix 6x86 to enable suspend-on-halt
and implement cyrix's workaround to the "coma bug".
memory-mapped device access (manifested by an apparent wedging of the
PCI bus):
- If cpu_class == CPUCLASS_486, disable memory-mapped PCI device access,
leaving only i/o-mapped access enabled.
- Provide a patchable kernel variable (i486_pci_mem_enabled) and a kernel
option (I486_PCI_MEM_ENABLED) to re-enable it.
thorpej