CVS log for src/sys/arch/powerpc/powerpc/vm_machdep.c

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

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

Additionally pull up following revision(s) (requested by rin in ticket #400):

	sys/arch/powerpc/include/oea/pmap.h: revision 1.39
	sys/arch/powerpc/include/pmap.h: revision 1.43
	sys/arch/powerpc/oea/pmap_kernel.c: revision 1.14
	sys/arch/powerpc/oea/pmap.c: revision 1.117
	sys/arch/powerpc/oea/pmap.c: revision 1.118
	sys/arch/powerpc/oea/pmap.c: revision 1.119
	sys/arch/powerpc/include/vmparam.h: revision 1.27
	sys/arch/powerpc/powerpc/trap.c: revision 1.165
	sys/arch/powerpc/oea/pmap.c: revision 1.120
	sys/arch/powerpc/oea/pmap.c: revision 1.121
	sys/arch/powerpc/powerpc/vm_machdep.c: revision 1.106
	sys/arch/powerpc/powerpc/bus_dma.c: revision 1.56

powerpc/oea: trap: pmap_{pte,ste}_spill() even in the interrupt context

Page table for oea is something like L2 TLB on memory; kernel and
processes share its entries, and process entries can be spilled out.

As done for MMU based on software-managed TLB, we need to restore
such entries even in the interrupt context.

Note that pmap_pte_spill() require no resouce to restore entries.
Still-not-implemented pmap_ste_spill() for OEA64 should also.
Part of PR kern/57621

powerpc/oea: pmap: Drop unused argument for pmap_pvo_reclaim(), NFC
Part of PR kern/57621

powerpc/oea: pmap: Rework pmap_pte_spill()

It was broken in many ways... Now, it gets working stable both for
OEA and OEA64_BRIDGE, as far as I can see.
Part of PR kern/57621

powerpc/oea: pmap: Fix mostly-pointless overhead of pmap_pvo_pool
(1) Drop __aligned(32) from struct pvo_entry; otherwise,
    sizeof(struct pvo_entry) is round-up'ed to a multiple of 32.
(2) Do not set sizeof(struct pvo_entry) to `align` argument for
    pool_init(9); it must be power of 2.
(3) Align pvo_entry to 32-byte boundary only if reasonably possible,
    i.e., OEA without DIAGNOSTIC (--> POOL_REDZONE) for now.
Part of PR kern/57621

powerpc/oea: pmap_create: Use PR_ZERO and drop memset(9), NFC
Part of PR kern/57621

powerpc: oea: For OEA64_BRIDGE, 1:1 map up to 3GiB memory
As done for OEA. Note that kva over 3GiB is reserved.

Provide PMAP_MAP_POOLPAGE for OEA64_BRIDGE at the same time, by
which direct-mapped memory is utilized in order to work around
starvation of 512MiB kernel virtual space.
PR kern/57621

powerpc: Make sure direct-mapped buffer fits within correct range

For OEA and OEA64_BRIDGE, only first 3GiB memory is direct-mapped.
Part of PR kern/57621

powerpc: Make sure direct-mapped buffer fits within correct range

For OEA and OEA64_BRIDGE, only first 3GiB memory is direct-mapped.

Part of PR kern/57621

Do not copy l_md to the new lwp in cpu_lwp_fork - as discussed on
tech-kern we do not want the child to inherit any of the flags in there.

Drop unused opt_multiprocessor.h includes.

Style and cosmetic changes. No binary changes intended.

Sync with head.

Oops, revert previous; fix build for PPC_OEA64 || PPC_OEA64_BRIDGE.
oea and booke seem to work without direct-mapped and physically
contiguous u-area.

When UPAGES > 1, both __HAVE_CPU_UAREA_ROUTINES and PMAP_MAP_POOLPAGE
must be defined in order to allocate physically contiguous memory for
u-area.

Sync with HEAD

Back out last change.  Clearing PSL_FP/PSL_VEC is handled by child_return.

Clear PSL_FP/PSL_VEC so the lwp won't think it owns them.

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

sync with head

Support Cache Protocol 'MEI' with MULTIPROCESSOR.

Pull up revision 1.97 (requested by matt in ticket #388).

Don't panic if you can't allocate a contiguous stack for system threads.
Just use a mapped a stack.

Don't panic if you can't allocate a contiguous stack for system threads.
Just use a mapped a stack.

Pull up following revision(s) (requested by matt in ticket #239):
	sys/arch/powerpc/powerpc/vm_machdep.c: revision 1.96
When a stack is specified, make sure the stack has enough for a previous
callframe in which the LR can be stored.  (atf test t_clone:clone_basic
now passes).

sync with head

sync to latest -current.

When a stack is specified, make sure the stack has enough for a previous
callframe in which the LR can be stored.  (atf test t_clone:clone_basic
now passes).

sync to -current.

Remove COMPAT_SA / KERN_SA.  Welcome to 6.99.3!
Approved by core@.

merge to -current.

Allow all physical addresses from 0 to 0xffffffff in cpu_uarea_alloc().
This fixes a panic with amigappc, which has RAM starting at 0x08000000.
Ok by releng@.

Typo in comment.

Allow the MD code to decide to panic if cpu_uarea_alloc would return NULL.
If NULL is returned, just allocate the standard way.

Default to normal uvm_uarea_alloc if we can't allocate one ourselves.

Catchup with rmind-uvmplock merge.

cleanup includes (include <powerpc/psl.h explicitly)

ofppc doesn't have PMAP_MAP_POOLPAGE so make the cpu_uareas do nothing.

Use PMAP_MAP_POOLPAGE/PMAP_UNMAP_POOLPAGE because it's cleaner.
Remove #ifdef _LP64 #endif leftover from mips

Include <uvm/uvm.h> instead of <uvm/uvm_extern.h> since we are using more
uvm functions.

Add __HAVE_CPU_UAREA_ROUTINES support so that uareas will be direct-mapped.
(This avoids the nasty tlb recursion problem on ibm4xx as well on mpc85xx).

sync with head

Add some more MI hook points for PCU.  Discard the PCU state at lwp_exit and
at exec time.  Before forking, save the PCU state so that cpu_lwp_fork
doesn't have.  Remove MD code which did that before.

Sync with HEAD.

sync with head

Move powerpc to use pcu to manage FPU/AltiVec/SPE.

sync with head

Sync with HEAD

Make vmapbuf() return success/error and make physio deal with a
failure.

Sync with HEAD

Always call cpu_lwp_bootstrap even in cpu_setfunc.  Let cpu_lwp_fork use
cpu_setfunc instead of duplicating code.  Simplify stack setup.
PR 44500

Add support for BookE Freescale MPC85xx (e500 core) processors.
Add fast softint support for PowerPC (though only booke uses it).
Redo FPU/VEC support and add e500 SPE support.
Rework trap/intrs to use a common trapframe format.
Support SOFTFLOAT (no hardfloat or fpu emulation) for BookE.

Add SPE (signal processing engine) support for mpc85xx/booke.  Think of it
as AltiVec-lite (really lite).  Genercize AltiVec support so that it could
the same interface could support SPE as well.  Rework the FPU support along
the same lines.  Move the __asm() to their own XXX_subr.S (altivec, fpu, spe).

Deal with trapframe changes and booke changes.

sync to netbsd-5

sync with head

Use lwp_getpcb() on mips, powerpc and sh3, clean from struct user usage.

Add a flags argument to pmap_kenter_pa(9).
Patch showed on tech-kern@ http://mail-index.netbsd.org/tech-kern/2009/11/04/msg006434.html
No objections.

Provide cpu_lwp_free* stubs in vax and powerpc.
Reported by <he>.

sync with head

Pull up following revision(s) (requested by martin in ticket #801):
	sys/arch/powerpc/powerpc/locore_subr.S: revision 1.38
	sys/arch/powerpc/powerpc/vm_machdep.c: revision 1.77
Do not use the same trampoline for cpu_setfunc and cpu_lwp_fork, the
latter does a lot more work.

Pull up following revision(s) (requested by martin in ticket #801):
	sys/arch/powerpc/powerpc/locore_subr.S: revision 1.38
	sys/arch/powerpc/powerpc/vm_machdep.c: revision 1.77
Do not use the same trampoline for cpu_setfunc and cpu_lwp_fork, the
latter does a lot more work.

Do not use the same trampoline for cpu_setfunc and cpu_lwp_fork, the
latter does a lot more work.

sync with head.

Sync with HEAD.

Sync with HEAD.

Update haad-dm branch to haad-dm-base2.

build fix: include <sys/buf.h>

Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

make this build again after revivesa.  ok'd by gimpy.

XXX: i think this will work but i haven't actually run any SA apps.
it does compile and link and the kernel boots just fine.

sync with HEAD

Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree.  Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches.  The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

Sync with HEAD

Sync with HEAD.

sync with head.

Sync with HEAD.

Sync with HEAD.

cpu_lwp_fork: don't rely on struct mdlwp being zeroed in advance.

sync with HEAD

Sync with head.

Sync with head.

Update to HEAD.

merge yamt-idlelwp branch.  asked by core@.  some ports still needs work.

from doc/BRANCHES:

	idle lwp, and some changes depending on it.

	1. separate context switching and thread scheduling.
	   (cf. gmcgarry_ctxsw)
	2. implement idle lwp.
	3. clean up related MD/MI interfaces.
	4. make scheduler(s) modular.

Adapt powerpc to yamt-idlelwp.  Nuke cpu_setfunc.
Don't define _HAVE_BITENDIAN_BITOPS.  Misc cleanups.

Sync with HEAD.

make this compile again

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

sync with head.

Merge newlock2 to head.

powerpc changes.

sync with head.

sync with head

sync with head.

Make cpu_coredump dependent on COREDUMP

sync with head

1st cut of Powermac G5 support (uses bridge mode).

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Rework the coredump code to have no explicit knownledge of how coredump
i/o is done.  Instead, pass an opaque cookie which is then passed to a
new routine, coredump_write, which does the actual i/o.  This allows the
method of doing i/o to change without affecting any future MD code.
Also, make netbsd32_core.c [re]use core_netbsd.c (in a similar manner that
core_elf64.c uses core_elf32.c) and eliminate that code duplication.
cpu_coredump{,32} is now called twice, first with a NULL iocookie to fill
the core structure and a second to actually write md parts of the coredump.
All i/o is nolonger random access and is suitable for shipping over a stream.

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.

use new apis.

convert arch/powerpc to new apis.

Fix the sync with head I botched.

Sync with HEAD.

There's no need to pass a proc value when using UIO_SYSSPACE with
vn_rdwr(9) and uiomove(9).

OK'd by Jason Thorpe

Sync with HEAD

Garbage-collect pagemove(); nothing use it anymore (YAY!!!)

Sync with HEAD

Add a SAVE/DISCARD flag to save_{fpu,vec}_lwp.  Use it appropriately.
Nuke struct fpu and use struct fpreg instead (except for the names, they
were identical).  On MP machines, this will avoid an unneeded IPI to save
the register contents that are about to discarded.

On FPU'ed systems, initialize the default FP exception mode.

Rearrange process exit path to avoid need to free resources from different
process context ('reaper').

From within the exiting process context:
* deactivate pmap and free vmspace while we can still block
* introduce MD cpu_lwp_free() - this cleans all MD-specific context (such
  as FPU state), and is the last potentially blocking operation;
  all of cpu_wait(), and most of cpu_exit(), is now folded into cpu_lwp_free()
* process is now immediatelly marked as zombie and made available for pickup
  by parent; the remaining last lwp continues the exit as fully detached
* MI (rather than MD) code bumps uvmexp.swtch, cpu_exit() is now same
  for both 'process' and 'lwp' exit

uvm_lwp_exit() is modified to never block; the u-area memory is now
always just linked to the list of available u-areas. Introduce (blocking)
uvm_uarea_drain(), which is called to release the excessive u-area memory;
this is called by parent within wait4(), or by pagedaemon on memory shortage.
uvm_uarea_free() is now private function within uvm_glue.c.

MD process/lwp exit code now always calls lwp_exit2() immediatelly after
switching away from the exiting lwp.

g/c now unneeded routines and variables, including the reaper kernel thread

ANSIfy.

Move SFRAMELEN to frame.h and use it in vm_machdep.c.  In setfunc, setup
callframe linkages correctly.  Restore use of ldptr to locore_subr.S
[pthreads and gdb no longer crash/hang the system]

Cleanup/rework cpu_switch*, switch_exit, Idle routine.  Remove pcb_psl
since it was write-only.  When setting up a process, make sure the fake
callframes are properly linked together.

Only lower SPL when in Idle loop.  Raise spl to previous level (which would
be IPL_SCHED) when exiting Idle loop.  Never lower SPL anyplace else.

Nuke ci_curpm and curpm.  Nuke pcb_pmreal.  Those were use for spill stacks
and those no longer exist.  for few uses that need CURPM, use CURPCB/PCB_PM

__KERNEL_RCSID()

LWP-ify for bebox/GENERIC

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

'struct proc *' -> 'struct lwp *' as required to get GENERIC for macppc built

Use PAGE_SIZE rather than NBPG.

Quiet lint warning.

Make AltiVec registers available via ptrace/procfs.  Simplify AltiVec
processing.  Add a "common" procfs_machdep.c for PowerPC platforms.
Even though it is supposed to be port specific, most (if not all)
PowerPC ports can just use the common one.

Rename PPC_MPC6XX to PPC_OEA (and any mpc6xx reference to oea).

More cleanup for OLDPMAP.

Cast to register_t instead of int to be nicer for LP64.
Simplify copyin/copyout/copyinstr/copyoutstr.  Fix bug
where the user virtual address was not updated so that
if the user's buffer crossed a segment boundary, the
wrong data could be copied.  Localize USER_SR to the
ILP32 version of setusr/unsetusr.

Merge the nathanw_sa branch.

* Merge switch_exit() and switch_lwp_exit().
* Keep the stack 16-byte aligned; adjust by USPACE-16, not USPACE-20.

sync kqueue branch with HEAD

catch up with -current.

Catch up to -current.

Switch back to kenter_pa/kremove

More refinement, only map B_READ buf with VM_PROT_WRITE (all pages always
have VM_PROT_READ).  Also, pass PMAP_WIRED to pmap_enter (for non-mpc6xx
pmaps).  This will give pmap clues about flushing any "icache ok state".

Switch vmap*buf back to using pmap_enter/pmap_remove.  This is so that
accesses to the buffer will cause the reference and modified bits for
the pages to be udpated appropriately.

LWPify

Catch up to -current.

restructure the FPU and AltiVEC code so that it works for MP.

Cleanup AltiVec data stream issues with context switching.  Don't stop
data streams on execptions/interrupts since the processor will suspend
them for us.  Only stop them on 1) process exit, 2) another process gets
its address space loaded, and 3) (for completeness only) we save a process's
AltiVec context.

catch up with -current.

No longer need to pull in lwp.h; proc.h pulls it in for us.

Peform a rototill over the powerpc-based ports.

Move the trap/vector initialization for MPC6xx ports to mpc6xx_machdep.c
Also move softnet, install_extintr, mapiodev, kvtop.  Add common BAT
initialization code.

Add user Altivec support.

Fix calls to OF_call_method in macppc/macppc/machdep.c.

Use ci_fpuproc in cpu_info instead of separate fpuproc.

Add separate syscall.c and defined __HAVE_SYSCALL_INTERN.

Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).

Catch up to -current.
(CVS: It's not just a program. It's an adventure!)

Catch up with -current.

switch all mpc6xx powerpc ports to NEWPMAP by default.
the old pmap is still available with the OLDPMAP option.

cpu_fork() -> cpu_lwp_fork().  This logically forks an LWP, not a
complete process.  As noted by Gregory McGarry on tech-kern.

Document stack alignment in cpu_fork.  Provide stack alignment in cpu_setfunc.

Initial SA support for ppc.  Test-booted on sandpoint, macppc, & walnut.
mcontext and cpu_getmcontext()/cpu_setmcontext() from Klaus Klein
<kleink@netbsd.org>.

Catch up with -current.

Update the kqueue branch to HEAD.

file vm_machdep.c was added on branch nathanw_sa on 2001-11-05 19:46:19 +0000

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.

Merge Aug 24 -current into the kqueue branch.

add missing pmap_update().

use pmap_k* in pagemove(), ie. for buffer cache pages.
in vunmapbuf(), call pmap_kremove() explicitly since uvm_km_free_wakeup()
will soon no longer do it for us.

update to -current

bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

Change a bcopy to a structure copy.

Use pmap_kenter_pa instead of pmap_enter for phys_map

Catch up to -current.

phys_map should use kenter/kremove

Add a port to IBM's PPC405GP Reference Board (the "walnut")
by Eduardo Horvath and Simon Burge of Wasabi Systems.

IBM 4xx series CPU features:
 - New pmap and revised trap handler.
 - Support on-chip timers, PCI controller, UARTs
 - Framework for on-chip ethernet and watchdog timer.
General PowerPC features:
 - Add in-kernel PPC floating point emulation
 - New in{,4}_cksum that is between 1.5 and 5 times faster than the
   old version depending on CPU type.
General changes:
 - Kernel support for generic dbsym-style symbols.

Make the new pmap optional.  Use the old (stable!) pmap by default.

Introduce a new & faster pmap for the MPC6xx (60x, 7xx, 7xxx) PPC CPUs.
Move MPC6xx dependent header files to powerpc/include/mpc6xx/

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.

Sync with HEAD

Catch up with -current.

Fix an uninitialized variable reference in cpu_fork().
Reported by Tad Hunt <tad@entrisphere.com>.

Sync with HEAD.

Merge my MP tree.  At this point, Daystar dual 604 card (i.e. Power Macintosh
9500/180MP and 9600/200MP) runs at least into single-user mode, possibly
multi-user mode (not stable yet).

Sync with HEAD.

Build with -Wall -Wetc.

Sync with HEAD.

Some preliminary ALTIVEC support.

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.

Scheduler locking changes.

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.

Sync w/ netbsd-1-5-base.

Dump fp regs into core file.

Rather than starting init and creating kthreads by forking and then
doing a cpu_set_kpc(), just pass the entry point and argument all
the way down the fork path starting with fork1().  In order to
avoid special-casing the normal fork in every cpu_fork(), MI code
passes down child_return() and the child process pointer explicitly.

This fixes a race condition on multiprocessor systems; a CPU could
grab the newly created processes (which has been placed on a run queue)
before cpu_set_kpc() would be performed.

Merge parts of chs-ubc2 into the trunk:
* Remove the casts to vaddr_t from the round_page() and trunc_page() macros to
  make them type-generic, which is necessary i.e. to operate on file offsets
  without truncating them.
* In due course, cast pointer arguments to these macros to an appropriate
  integral type (paddr_t, vaddr_t).

Originally done by Chuck Silvers, updated by myself.

Fix PR9240: comment above cpu_fork() out of synch with reality on most ports.
(comment change only, but was wrong for more than just i386).

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.

Generally update the comment above vunmapbuf().

Generally update the comment above the vmapbuf() implementations.

Allow the caller to specify a stack for the child process.  If NULL,
the child inherits the stack pointer from the parent (traditional
behavior).  Like the signal stack, the stack area is secified as
a low address and a size; machine-dependent code accounts for stack
direction.

This is required for clone(2).

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.

Changes to support fork_kthread():
- cpu_set_kpc() now takes void *arg third argument, passed to the
  entry point.
- cpu_fork() allows parent to be non-curproc iff parent is proc0.
  When forking non-curproc, assume its state has already been saved.
- Adjust various pieces of machine-dependent code to account of all of this.

In cpu_coredump(), use MID_MACHINE rather than MID_* (whatever it expands
to).

Adjust for the new "reaper" kernel thread: do not free the vmspace and
u-area in machine-dependent code.  Instead, call exit2() to schedule
the reaper to free them for us, once it is safe to do so (i.e. we are
no longer running on the dead proc's vmspace and stack).

vm_offset_t --> [pv]addr_t

Merge in MACHINE_NEW_NONCONTIG support and some fix from Tsubai-San.
UVM support.

Don't use vm_pmap; use vm_map.pmap instead.

PowerPC port