Switch cobalt to common bus_space.

Tested on raq 2

Convert cobalt to generic mips bus_dma.

branches: 1.44.10;
move common/bus_dma/ -> dev/bus_dma/

branches: 1.43.6;
Change old-style function defintions to C89 prototypes.

Approved by releng.

branches: 1.42.2; 1.42.6;
Switch MIPS and MIPS-ish architectures to new-style <sys/bus.h>. This
involves moving some inline bus_space(9) implementation into .c files.

Cleanup kernel files to use sys variants for bus.h, cpu.h, and intr.h
Use <mips/..> for db_machdep.h and psl.h

TAB/space cosmetics.

Merge forward from matt-nb5-mips64.
(XXX generic kernels on raq2 die after interrupts are enabled but gxemul
works fine).

branches: 1.38.4; 1.38.6; 1.38.8;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

Use bus_dmamem_common.

Add an empty bus_space_mmap(9) function as temporary workaround
for MI pci(4) mmap function in sys/dev/pci/pci_usrreq.c.

branches: 1.35.8; 1.35.16;
vm_page: put TAILQ_ENTRY into a union with LIST_ENTRY, so we can use both.

branches: 1.34.2;
Remove clause 3 and 4 from TNF licenses

branches: 1.33.40; 1.33.42; 1.33.44;
Use char* with mtod() when doing pointer arithmetic on the result.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.31.12;
space nits.

branches: 1.30.2;
integrate kauth.

Pull slightly optimized BUS_DMASYNC_PREREAD op from other mips3 ports.

Mising -> Mixing

_ds_vaddr member in struct cobalt_bus_dma_segment is a virtual address,
so it should be vaddr_t rather than bus_addr_t.

- ANSIfy
- KNF
- u_intXX_t -> uintXX_t

Fix function name in panic messages.

branches: 1.24.2; 1.24.4; 1.24.6;
merge yamt-uio_vmspace branch.

- use vmspace rather than proc or lwp where appropriate.
the latter is more natural to specify an address space.
(and less likely to be abused for random purposes.)
- fix a swdmover race.

branches: 1.23.2; 1.23.4; 1.23.6;
merge ktrace-lwp.

bus_dmamem_map: honour BUS_DMA_NOWAIT. noted by Manuel Bouyer.
bus_space_map: always do NOWAIT allocation as it used to be before yamt-km.

we have too many copies!

branches: 1.21.2; 1.21.8;
merge yamt-km branch.
- don't use managed mappings/backing objects for wired memory allocations.
save some resources like pv_entry. also fix (most of) PR/27030.
- simplify kernel memory management API.
- simplify pmap bootstrap of some ports.
- some related cleanups.

Add a dm_maxsegsz public member to bus_dmamap_t. This allows a user of the API
to select the maximum segment size for each bus_dmamap_load (up to the maxsegsz
supplied to bus_dmamap_create). dm_maxsegsz is reset to the value supplied to
bus_dmamap_create when the dmamap is unloaded.

branches: 1.19.4; 1.19.6;
bus_dmamap_load_mbuf(): Skip zero-length mbufs.
kern/24811

Correct a few comment typos that have propagated through the
tree.

__KERNEL_RCSID()

branches: 1.16.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

Use PAGE_SIZE rather than NBPG.

move initialization of the "struct pglist" returned by uvm_pglistalloc()
from the calling code into uvm_pglistalloc() itself for consistency
and easier error handling

branches: 1.12.2; 1.12.10;
Merge the thorpej-mips-cache branch onto the trunk. This is an
overhaul of how caches are handled for NetBSD's MIPS ports.

branches: 1.11.2;
Update pmap_update to now take the updated pmap as an argument.
This will allow improvements to the pmaps so that they can more easily defer expensive operations, eg tlb/cache flush, til the last possible moment.

Currently this is a no-op on most platforms, so they should see no difference.

Reviewed by Jason.

branches: 1.10.2;
bzero -> memset

branches: 1.9.2;
replace vm_page_t with struct vm_page *.

Sprinkle pmap_update() calls after calls to:
- pmap_enter()
- pmap_remove()
- pmap_protect()
- pmap_kenter_pa()
- pmap_kremove()
as described in pmap(9).

These calls are relatively conservative. It may be possible to
optimize these a little more.

s/vm_page_alloc_memory/uvm_pglistalloc/ in panic message.

branches: 1.6.2; 1.6.4;
Don't include <vm/vm.h>.

remove/move more mach vm header files:

<vm/pglist.h> -> <uvm/uvm_pglist.h>
<vm/vm_inherit.h> -> <uvm/uvm_inherit.h>
<vm/vm_kern.h> -> into <uvm/uvm_extern.h>
<vm/vm_object.h> -> nothing
<vm/vm_pager.h> -> into <uvm/uvm_pager.h>

also includes a bunch of <vm/vm_page.h> include removals (due to redudancy
with <vm/vm.h>), and a scattering of other similar headers.

Change the kernel mmap interface so that the offset to map is an
"off_t" and the return value is a "paddr_t" to allow mappings
at offsets past 2^31 bytes. Somewhat inspired by FreeBSD, which
only changed the offset to a "vm_offset_t".

Includes updates for the i386, pc532 and sh3 mmmmap from Jason Thorpe.

branches: 1.3.2;
Whitespace.

branches: 1.2.2;
Some cleanups.

NetBSD/cobalt. Work-in-progress.