CVS log for src/sys/arch/x68k/x68k/bus.c

Up to [cvs.NetBSD.org] / src / sys / arch / x68k / x68k

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

TAB/space/indent cleanup.

s/functin/function/ in copy pasted comment.

s/entrace/entrance/ in copy pasted comment.

Resync to 2012-11-19 00:00:00 UTC

sync with head

move common/bus_dma/ -> dev/bus_dma/

Sync with HEAD.

sync with head.

sync with head

fix PR 6724 - convert m68k options to defflag's.  this means that
M680[12346] are now available from opt_m68k_arch.h.  FPSP meantioned
in the PR has already been fixed, and i could not find any more.

i built these kernels to ensure i did not break their builds:

amiga: GENERIC DRACO
atari: HADES FALCON MILAN-PCIIDE
mac68k: GENERIC
sun2: GENERIC
sun3: GENERIC GENERIC3X
cesfic: attempted GENERIC, does not build due to lack of machine/bus.h
hp300: GENERIC
luna68k: GENERIC
mvme68k: GENERIC
news68k: GENERIC
next68k: GENERIC
x68k: GENERIC

sync with head

Use bus_dmamem_common.

sync with head.

Sync w/ -current. 34 merge conflicts to follow.

sync with head.

Sync with HEAD.

Also fix build.

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

Sync with HEAD.

sync with head.

sync with head.

Remove clause 3 and 4 from TNF licenses

sync with head.

Sync with HEAD.

Cast to char* before doing pointer arithmetic.

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

sync with head.

merge ktrace-lwp.

Sync with head.

sync with head.

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!

sync with -current

Sync with HEAD.

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.

sync with head.  xen and whitespace.  xen part is not finished.

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.

Don't deref a NULL struct lwp *. This shouldn't happen, but...

convert arch/x68k to new apis.

Sync with HEAD.

de-__P, remove register, ansify.

Sync with HEAD.

bus_dmamap_load_mbuf(): Skip zero-length mbufs.
kern/24811

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

rcsid

Apply the aborted ktrace-lwp changes to a specific branch.  This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it.  This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.

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.

catch up with -current.

catch up with -current on kqueue branch

Catch up to -current.

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

Sync kqueue branch with -current.

Catch up to -current.

Implement bus_dmamap_sync properly.
dma_cachectl is now used only for DMAC array chain.

Catch up with -current.

file bus.c was added on branch nathanw_sa on 2002-01-08 00:28:53 +0000

don't depend on other headers to include sys/proc.h for us.

Update the kqueue branch to HEAD.

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.

Catch up to -current.

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.

Catch up with -current.

Sync with HEAD.

s/vm_page_alloc_memory/uvm_pglistalloc/ in panic message.

Sync with HEAD.

Use m68k_page_offset and m68k_trunc_page macros,
instead of using PGOFSET directly.

Remove some redundant decls.
Fix some nested decls.

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

Pull up mmap paddr_t/off_t changes from trunk.

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.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.

Pull up to last week's -current.

Sync with -current

Update for pmap_enter() API change.  No functional difference.

Update from trunk.

Change the pmap_extract() interface to:
	boolean_t pmap_extract(pmap_t, vaddr_t, paddr_t *);
This makes it possible for the pmap to map physical address 0.

Sync w/ -current.

bus_dmamem_map() maps DMA safe memory, which is usually one or more
managed pages, into KVA space.  Since the pages are managed, we should
use pmap_enter(), not pmap_kenter_pa().

Also, when entering the mappings, enter with an access_type of
VM_PROT_READ | VM_PROT_WRITE.  We do this for a couple of reasons:

	(1) On systems that have H/W mod/ref attributes, the hardware
	    may not be able to track mod/ref done by a bus master.

	(2) On systems that have to do mod/ref emulation, this prevents
	    a mod/ref page fault from potentially happening while in an
	    interrupt context, which can be problematic.

This latter change is fairly important if we ever want to be able to
transfer DMA-safe memory pages to anonymous memory objects; we will need
to know that the pages are modified, or else data could be lost!

Note that while the pages are unowned (i.e. "just DMA-safe memory pages"),
they won't consume any swap resources, as the mappings are wired, and
the pages aren't on the active or inactive queues.

Changes for modified pmap_enter() API:
* Map the message buffer with access_type = VM_PROT_READ|VM_PROT_WRITE `just
  because'.
* Map the file system buffers with access_type = VM_PROT_READ|VM_PROT_WRITE to
  avoid possible problems with pagemove().
* Do not use VM_PROT_EXEC with either of the above.
* Map pages for /dev/mem with access_type = prot.  Also, DO NOT use
  pmap_kenter() for this, as we DO NOT want to lose modification information.
* Map pages in dumpsys() with VM_PROT_READ.
* Map pages in m68k mappedcopyin()/mappedcopyout() and writeback() with
  access_type = prot.
* For now, bus_dma*(), pmap_map(), vmapbuf(), and similar functions still use
  access_type = 0.  This should probably be revisited.

completely remove Mach VM support.  all that is left is the all the
header files as UVM still uses (most of) these.

Merged minoura_x68k_bus_h branch.

Use a single (inline) function instead of refering the bus_space switch.

Implemented BUS_SPACE_MAP_SHIFTED.
Some of the devices are mapped only on the odd addresses for hardware
simplicity.  To share drivers with other platforms, this should be
made transparent through the bus_space layer.

Typo.

Added DMAC driver.

First import of bus_space implementation for x68k port.

file bus.c was initially added on branch minoura_x68k_bus_h.