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in the config cycle, and pci devices as well as mac onboard devices
do not use interrupts to probe. It is possible to record that the
interrupt is to be configured, but not configure it with the interrupt
controller until the interrupt controller configures itself.
This is lazy binding of interrupts. If there is a conflicting interrupt
or other problem it will be noticed when the interrupt controller configures
and collects the data rather than when the device configures.
Currently on the openpic interrupt controller supports these pre-configured
interrupts.
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due to busdma issues on powerpc.
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Add spllowersoftclock() for the former behaviour. Update comment. (art@ ok)
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to count clock interrupts.
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off_t to be visible in stdio.h even in strict ansi mode. This is needed
for ftello()/fseeko() and it allows us to remove the horrible fpos_t hack.
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Full dma code not yet integrated.
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somewhat skeletal.
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it has a copyin bug after device configuration. However to get these diffs
out of my tree.
All of the UVM code is currently inside ifdef UVM the kernel works fine
without option UVM. Config files have been left without UVM for now.
Prelimiary changes for busdma, (what UVM was wanted for).
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is set to 256MB and this prevented OpenBSD from booting on machine with
more than ~128MB, 196MB machines would fail to boot very early.
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add mac hooks to the powerpc config structure, probably
a hack, and certainly needs to be cleaned up.
bus.h
p4e_ -> ppc_X
add write_multi and prototypes for bus_space_X_raw_multi functions.
intr.h
add structure for interrupt handler.
pio.h
remove the unnecessary and slowing "sync" instruction from
each pio access.
remove unnecessary newline characters from the generated asm.
eieio after writes, but before reads.
types.h
formatting change
vmparam.h
change powerpc kernel virtual memory sizing from a fixed segment
to a variable, initialized with a segment size, this is
so that the pmap allocator can steal virtual memory, if vm
is not yet set up. Necessary for mapping devices before the
kernel vm structures are initialized.
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be possible to have more optimial egcs support.
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(don't forget that cpp is `lazy':
#define A B
#define B value
#if A == value
works, since A isn't extended before it's needed, by which time B is known)
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we really should fix the config args of the wscons code.
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soft interrupt.
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This contains several pieces of the port
MI:
vgafb, on powerpc under openfirmware the vga card comes up in gfx mode.
instead of resetting it to text mode, vgafb treats this as a raster
display. The mechanism used may not have been the best, it's
interface to wscons is as a text display, and it does the character
plotting itself.
font_8x16.c was stolen from the atari port for use.
MD:
ppcppi support stolen from alpha
pms.c, pckbd.c and the rest of the support files were
used nearly directly.
powerpc
conf.c to support wscon, vga/kbd
machdep.c hack to get around a bus_space_set_region,bus_space_copy error.
ofw_machdep.c some hack code on the road to supporting wscons as console.
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NCR driver seems to work.
Major changes are isa can be child of pci or mainbus.
ofroot is child of mainbus not root.
ofw bus configured before pci bus
Note that if a pci device configures accessing of driver will crash
the system. they need to be exclusive.
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Need to get symbol support in the loader too.
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access to the registers. The format of the registers returned in ptrace,
/proc and in the coredump header match what gdb was expecting.
Floating point registers are not yet copied into the structure.
The location of the fpr needs to be found and copied. <- TODO
Changes to trap.c was to add some interm debugging. code is commented out.
powerpc does not currently have a MID_* type, since it uses ELF instead
of a.out, one was never added. Currently the coredump is done in form
of MID_NONE. What is the correct approach for this?? Elf format coredumps...
maybe?
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can be built.
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Support for Openfirmware drivers was reintroduced so that more systems
were supported. This should work with the real driver configurations
as well.
Bootloader files were deleted/replaced with the newer versions in the
subdirectory. Some effort has been made to be closer to support booting
(at least the bootloader) on the Mac.
Config files that end with OFW are the openfirmware versions of the kernels
without have native drivers.
Native driver support has not been changed, presumably it still works.
I couldn't test that.
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so far, the other archs gets placeholders for now. I wrote a compatibility
layer for OpenBSD's old isadma code so we can still use our old
driver sources. They will however get changed to native bus_dma use,
on a case by case basis. Oh yes, I almost forgot, I kept our notion
of isadma being a device so DMA-less ISA-busses still work
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part. Some ports can optimize the swap operations. This also means the
general API is extended with swap16, swap32, htobe16, htobe32, betoh16,
betoh32, htole16, htole32, letoh16 and letoh32.
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