Introduce PPC_NO_UNALIGNED flag to indicate that CPU cannot handle
unaligned memory access, and emulation should be provided to userland.

Try to fix PV tracking support.

* For oea (with real PV tracking support):

Define __HAVE_PMAP_PV_TRACK. Otherwise, pmap_pv_init() is not called by
uvm_init().

* For booke and ibm4xx (without PV tracking support):

For MODULAR kernel and modules, define __HAVE_PMAP_PV_TRACK together with
PMAP_PV_TRACK_ONLY_STUBS, so that modules can be shared with oea.

Note that PMAP_PV_TRACK_ONLY_STUBS can be used even for oea,
as a compile-time option to strip real PV tracking support.

include pmap_pvt.c in bridge mode as well

powerpc: Implement pv-tracking for unmanaged pages.

Needed for drm.

For Explora 451, call calc_delayconst() before pckbc_cnattach(), which
depends on delay() and DELAY().

Unfortunately, proplib(9) API is not available for MD codes, that are
called before consinit() (since pool(9) is not initialized yet).

Therefore, hard-code CPU frequency to calc_delayconst() in case
"processor-frequency" is not initialized.

branches: 1.97.2;
make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

Introduce PMAP_TLBDEBUG option for ibm4xx: clear only TLBHI[V] bit when
TLB entry is invalidated, instead of clearing entire TLBHI register.

Make copystr() a MI C function, part of libkern and shared on all
architectures.

Notes:

- On alpha and ia64 the function is kept but gets renamed locally to avoid
symbol collision. This is because on these two arches, I am not sure
whether the ASM callers do not rely on fixed registers, so I prefer to
keep the ASM body for now.
- On Vax, only the symbol is removed, because the body is used from other
functions.
- On RISC-V, this change fixes a bug: copystr() was just a wrapper around
strlcpy(), but strlcpy() makes the operation less safe (strlen on the
source beyond its size).
- The kASan, kCSan and kMSan wrappers are removed, because now that
copystr() is in C, the compiler transformations are applied to it,
without the need for manual wrappers.

Could test on amd64 only, but should be fine.

Add PPC_IBM440 flag as 440 is significantly different from 40x processors.
(It may be more easily supported by booke than by ibm4xx.)

branches: 1.92.4; 1.92.6;
Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos

branches: 1.90.2;
add clock speed control for 970MP CPUs

branches: 1.89.28;
compat16 -> compat_16

sigcode is dependant on compat_16

Enable sljit and bpfjit on powerpc.

remove unused OPENPIC flags.

branches: 1.85.2;
Support Cache Protocol 'MEI' with MULTIPROCESSOR.

move common tlb stuff to uvm

branches: 1.83.2;
Add PMAP_MINIMALTLB defflag

branches: 1.82.2; 1.82.6; 1.82.8;
Add VERBOSE_INITPPC flag

Unconditionally build fixup.c

Move the interrupt stub from booke_stubs.c into its own intr_stubs.c.
Move the "null" intrsw (used in startup) to intr_stubs.c as well.

Take the fast softint support in e500_intr.c and make generic so that it can
be used to provide fast softint for other interrupt implementations.

Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

Remove <machine/atomic.h>; use <sys/atomic.h> instead.
Add <powerpc/cpuset.h> (for mpc85xx pmap).
Add some initial MP code for mpc85xx
Rework ipi code to be common across all ppcs
Change PPC to keep curlwp in %r13 while in the kernel.
Move astpending from cpu_info to mdlwp
Improve cpu_need_resched to be more MP friendly.

branches: 1.76.2;
Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Remove Darwin, MACH and Mach-O support.

When an OEA kernel is configured for multiple MMU types, use the new
powerpc fixup mechanism to bind the kernel to a particular MMU. This
avoids an indirect call for every pmap call.

branches: 1.73.2;
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.

branches: 1.72.2; 1.72.4;
Add PPC_BOOKE cputype and booke files.

branches: 1.71.4;
Since oea pmap.c is #included many times, put kernel_pmap_ptr into
its own source module to avoid multiple initialized data definitions.

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

branches: 1.69.6; 1.69.10; 1.69.16; 1.69.18; 1.69.28;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

Rewrite a big chunk of the pmap and locore code for powerpc to better
deal with the 64bit bridge mode. pmap changes by Matt Thomas, rest by myself.

Change pmap.c to work similar to exec_elf.c to allow us to compile in
multiple pmaps to a single kernel. This allows the pmap for bridge64 to
co-exist with the 32bit pmap.

Yank __HAVE_PMAP_PHYSSEG from all the oea code.

Add a new global, "oeacpufeat", which is used early in locore to determine
certain cpu features. This allows us to conditionalize code early in the boot
for certain CPUs that have special needs.

Yank most of the ifdef PPC_OEA_BRIDGE64 code from almost every file it was
found in. Some of it seemed incorrect, and my 7044 booted just fine
without it. It would appear that the bridge cpus treat BAT instructions
as nops, so they seem to be safe.

In ofppc, check the oeacpufeat, and if we are on a 64bit proc, clear
MSR[SF], and ASR[V].

With all of these changes, a kernel with both PPC_OEA and PPC_OEA_BRIDGE64
will boot on the POWERIII-2 cpu. However, it will not yet boot on a 32bit
cpu, because of CACHELINESIZE. Work remains to be done there to fix that.

Refactor in_cksum/in4_cksum/in6_cksum implementations:
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.

This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.

Build kobj_machdep.c if MODULAR.

branches: 1.65.2; 1.65.8;
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.

branches: 1.64.8; 1.64.10; 1.64.12; 1.64.14;
Remove leftover netns stuff.

branches: 1.63.6; 1.63.8; 1.63.14;
Merge newlock2 to head.

branches: 1.62.4;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.61.4; 1.61.8;
merge ktrace-lwp.

branches: 1.60.2;
Remove the hack to compile oea/pmap.c with -Wno-cast-qual, and instead
make use of the new __UNVOLATILE() macro in memset() usage.

Put a band-aid over the cast qualification warnings for oea/pmap.c.
It cannot be compiled with -Wno-cast-qual due to a volatile pointer
being passed to memset(), and there's no easy way other than open-
coding memset() to fix this. So instead we cheat for now and add
-Wno-cast-qual to CFLAGS for this file. To be documented in doc/HACKS.

Move all the MD bits of commpage to a new file.
Map the comm page as RW in kernel (we want to modify it but not to execute it),
and RX in userland (no need to modify it but we want to execute it

Add entry for netns/ns_cksum.c

defparam PMAP_MEMLIMIT

Include arch/powerpc/ibm4xx/intr.c only if a particular board actually
uses the generic 4xx interrupt implementation.
There are some 4xx boards with entirely different interrupt controllers.

Add siginfo support for PowerPC.

Remove SPILLSTK leftovers.

Add PTEGCOUNT defparam for opt_pmap.h

Add PPC_OEA64 and netbsd32_sigcode.S

Elimindate MD setrunqueue/remrunqueue (which were out-of-date compared to
the canonical versions in kern_synch.c). Define __HAVE_BIGENDIAN_BITOPS
so the canonical versions will be used but will store priorities in the
desired (MSB) order for PowerPC (which allows the use of the cntlzw (count
leading zeroes, word) instruction in locore_subr.S to find the proper
priority).

branches: 1.49.2;
rename Locore.c -> locore_c.c so that we can compile on case insensitive
filesystems. (from John Gordon)

Add CLOCKBASE to opt_ppcparam.h.

Add support for the IBM 403GCX cpu. Enabled with "options PPC_IBM403".

- different set of device control registers.
- non-standard access to the time base.
- 16 byte cache lines.

Approved by: Eduardo Horvath <eeh@netbsd.org>

Added L3CR_CONFIG to the parameter list for 745x L3 cache configuration.

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

Remove OLDPMAP support.

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

Added an empty shell for signal delivery. Now we just have to fill the
machine dependant bits.

As we use one FreeBSD file for COMPAT_DARWIN, we must include file.freebsd

The kernel now builds with COMPAT_DARWIN.

Added support for Darwin's PowerPC-only system calls:
ppccalls, with system call numbers starting at 0x6000
fasttraps, with system call numbers starting at 0x7FF0

Because the Mach system call dispatching code has grown a bit
too much, introduce an inline function to handle it (mach_syscall_dispatch).

While we are there, remove the Mach and Linux includes from
arch/powerpc/powerpc/syscall.c and push them into
arch/powerpc/powerpc/{mach|linux}_syscall.c

Add COMPAT_MACH and EXEC_MACHO support on the PowerPC

Prepare syscall.c for COMPAT_MACH support. linux_syscall_intern is
moved to a Linux specific file, child_return is moved to trap.c,
and we introduce a EMULNAME macro co that syscall.c can be included to
define the system call handler for another emulation.

Moved binary compatibility options from arch directory to cpu directory

defflag PMAPDEBUG, PMAPCHECK, and PMAPCOUNTERS into opt_pmap.h

reimplement copy{in,out}str() similarly to copy{in,out}()
(instead of the old way of calling [fs]ubyte() in a loop).

Add a common file to do pmap_zero_page/pmap_copy_page/pmap_pageidlezero and
pmap_syncicache. This file uses a ppc feature in a sick and twisted way
to avoid mapping the physical pages used by those routines. It performs
the operations with the MMU disabled but PPC exception save and retstore
the machine state and are invoked with the MMU disabled, this doesn't have
an adverse effect on the system.

Currently only enable for MPC6xx and !OLDPMAP.

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.

branches: 1.31.4;
Some files have been moved into powerpc/ibm4xx.

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

add support for kgdb over zs

Change L2CR_CONFIG from defflag to defparam, since it takes an argument.

- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

- replace "defopt" with "defparam" for options which must take a value,
as config(8) will warn for value-less defparam options
- minor whitespace/formatting cleanup
- consolidate opt_tcp_recvspace.h and opt_tcp_sendspace.h into opt_tcp_space.h

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.24.6;
Create an opt_openpic.h and add both OPENPIC and OPENPIC_SERIAL_MODE to it.

Make all powerpc ports use a common Makefile.powerpc (except walnut)
Enforce -Wmissing-prototypes -Wstrict-prototypes for all ppc ports.
Split out macppc cpu support and make common to mpc6xx ports. Make
other mpc6xx ports use it. Add evcnts for mpc6xx traps.

branches: 1.22.2;
Build for kgdb as well as for ddb (mutually exclusive).

Forgot to commit this -- move file .../bus_dma.c line to files.${machine}.

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/

branches: 1.17.2;
Add powerpc/powerpc/powerpc_machdep.c

defopt openpic

Split OpenPIC support into powerpc so ports only need minimal custom
configuration. openpic_init() now takes a single argument that is the
base of the OpenPIC register space.

Add placeholder for AltiVec support file.

Allow arch-specific code to specify in4_cksum() like it can specify
in_cksum().

Move signal management code common to all PowerPC platforms (sendsig(),
sigreturn(), sigcode) to a single place in the shared powerpc directory.
(The struct sigcontext etc. definitions were already being shared.)

branches: 1.11.8; 1.11.14;
RCS ID police

powerpc/bcopy.c is unnecessary.

Make signal delivery work again.

Rename NetBSD/powerpc to NetBSD/ofppc.
New sys/arch/powerpc with PowerPC-generic stuff.

Catch up with changes in dev/ofw. Add mainbus.

Slight rearrangement.

Import DDB from OpenBSD/powerpc.

RCSID Police.

- Pull in new ofwmagic.S and soft_spl.c files
- firepowerbugs -> firmworksbugs

Rename recently checked in KGDB to IPKDB to resolve conflicts with older KGDB

PowerPC port

Try to fix PV tracking support.

* For oea (with real PV tracking support):

Define __HAVE_PMAP_PV_TRACK. Otherwise, pmap_pv_init() is not called by
uvm_init().

* For booke and ibm4xx (without PV tracking support):

For MODULAR kernel and modules, define __HAVE_PMAP_PV_TRACK together with
PMAP_PV_TRACK_ONLY_STUBS, so that modules can be shared with oea.

Note that PMAP_PV_TRACK_ONLY_STUBS can be used even for oea,
as a compile-time option to strip real PV tracking support.

include pmap_pvt.c in bridge mode as well

powerpc: Implement pv-tracking for unmanaged pages.

Needed for drm.

For Explora 451, call calc_delayconst() before pckbc_cnattach(), which
depends on delay() and DELAY().

Unfortunately, proplib(9) API is not available for MD codes, that are
called before consinit() (since pool(9) is not initialized yet).

Therefore, hard-code CPU frequency to calc_delayconst() in case
"processor-frequency" is not initialized.

branches: 1.97.2;
make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

Introduce PMAP_TLBDEBUG option for ibm4xx: clear only TLBHI[V] bit when
TLB entry is invalidated, instead of clearing entire TLBHI register.

Make copystr() a MI C function, part of libkern and shared on all
architectures.

Notes:

- On alpha and ia64 the function is kept but gets renamed locally to avoid
symbol collision. This is because on these two arches, I am not sure
whether the ASM callers do not rely on fixed registers, so I prefer to
keep the ASM body for now.
- On Vax, only the symbol is removed, because the body is used from other
functions.
- On RISC-V, this change fixes a bug: copystr() was just a wrapper around
strlcpy(), but strlcpy() makes the operation less safe (strlen on the
source beyond its size).
- The kASan, kCSan and kMSan wrappers are removed, because now that
copystr() is in C, the compiler transformations are applied to it,
without the need for manual wrappers.

Could test on amd64 only, but should be fine.

Add PPC_IBM440 flag as 440 is significantly different from 40x processors.
(It may be more easily supported by booke than by ibm4xx.)

branches: 1.92.4; 1.92.6;
Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos

branches: 1.90.2;
add clock speed control for 970MP CPUs

branches: 1.89.28;
compat16 -> compat_16

sigcode is dependant on compat_16

Enable sljit and bpfjit on powerpc.

remove unused OPENPIC flags.

branches: 1.85.2;
Support Cache Protocol 'MEI' with MULTIPROCESSOR.

move common tlb stuff to uvm

branches: 1.83.2;
Add PMAP_MINIMALTLB defflag

branches: 1.82.2; 1.82.6; 1.82.8;
Add VERBOSE_INITPPC flag

Unconditionally build fixup.c

Move the interrupt stub from booke_stubs.c into its own intr_stubs.c.
Move the "null" intrsw (used in startup) to intr_stubs.c as well.

Take the fast softint support in e500_intr.c and make generic so that it can
be used to provide fast softint for other interrupt implementations.

Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

Remove <machine/atomic.h>; use <sys/atomic.h> instead.
Add <powerpc/cpuset.h> (for mpc85xx pmap).
Add some initial MP code for mpc85xx
Rework ipi code to be common across all ppcs
Change PPC to keep curlwp in %r13 while in the kernel.
Move astpending from cpu_info to mdlwp
Improve cpu_need_resched to be more MP friendly.

branches: 1.76.2;
Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Remove Darwin, MACH and Mach-O support.

When an OEA kernel is configured for multiple MMU types, use the new
powerpc fixup mechanism to bind the kernel to a particular MMU. This
avoids an indirect call for every pmap call.

branches: 1.73.2;
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.

branches: 1.72.2; 1.72.4;
Add PPC_BOOKE cputype and booke files.

branches: 1.71.4;
Since oea pmap.c is #included many times, put kernel_pmap_ptr into
its own source module to avoid multiple initialized data definitions.

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

branches: 1.69.6; 1.69.10; 1.69.16; 1.69.18; 1.69.28;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

Rewrite a big chunk of the pmap and locore code for powerpc to better
deal with the 64bit bridge mode. pmap changes by Matt Thomas, rest by myself.

Change pmap.c to work similar to exec_elf.c to allow us to compile in
multiple pmaps to a single kernel. This allows the pmap for bridge64 to
co-exist with the 32bit pmap.

Yank __HAVE_PMAP_PHYSSEG from all the oea code.

Add a new global, "oeacpufeat", which is used early in locore to determine
certain cpu features. This allows us to conditionalize code early in the boot
for certain CPUs that have special needs.

Yank most of the ifdef PPC_OEA_BRIDGE64 code from almost every file it was
found in. Some of it seemed incorrect, and my 7044 booted just fine
without it. It would appear that the bridge cpus treat BAT instructions
as nops, so they seem to be safe.

In ofppc, check the oeacpufeat, and if we are on a 64bit proc, clear
MSR[SF], and ASR[V].

With all of these changes, a kernel with both PPC_OEA and PPC_OEA_BRIDGE64
will boot on the POWERIII-2 cpu. However, it will not yet boot on a 32bit
cpu, because of CACHELINESIZE. Work remains to be done there to fix that.

Refactor in_cksum/in4_cksum/in6_cksum implementations:
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.

This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.

Build kobj_machdep.c if MODULAR.

branches: 1.65.2; 1.65.8;
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.

branches: 1.64.8; 1.64.10; 1.64.12; 1.64.14;
Remove leftover netns stuff.

branches: 1.63.6; 1.63.8; 1.63.14;
Merge newlock2 to head.

branches: 1.62.4;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.61.4; 1.61.8;
merge ktrace-lwp.

branches: 1.60.2;
Remove the hack to compile oea/pmap.c with -Wno-cast-qual, and instead
make use of the new __UNVOLATILE() macro in memset() usage.

Put a band-aid over the cast qualification warnings for oea/pmap.c.
It cannot be compiled with -Wno-cast-qual due to a volatile pointer
being passed to memset(), and there's no easy way other than open-
coding memset() to fix this. So instead we cheat for now and add
-Wno-cast-qual to CFLAGS for this file. To be documented in doc/HACKS.

Move all the MD bits of commpage to a new file.
Map the comm page as RW in kernel (we want to modify it but not to execute it),
and RX in userland (no need to modify it but we want to execute it

Add entry for netns/ns_cksum.c

defparam PMAP_MEMLIMIT

Include arch/powerpc/ibm4xx/intr.c only if a particular board actually
uses the generic 4xx interrupt implementation.
There are some 4xx boards with entirely different interrupt controllers.

Add siginfo support for PowerPC.

Remove SPILLSTK leftovers.

Add PTEGCOUNT defparam for opt_pmap.h

Add PPC_OEA64 and netbsd32_sigcode.S

Elimindate MD setrunqueue/remrunqueue (which were out-of-date compared to
the canonical versions in kern_synch.c). Define __HAVE_BIGENDIAN_BITOPS
so the canonical versions will be used but will store priorities in the
desired (MSB) order for PowerPC (which allows the use of the cntlzw (count
leading zeroes, word) instruction in locore_subr.S to find the proper
priority).

branches: 1.49.2;
rename Locore.c -> locore_c.c so that we can compile on case insensitive
filesystems. (from John Gordon)

Add CLOCKBASE to opt_ppcparam.h.

Add support for the IBM 403GCX cpu. Enabled with "options PPC_IBM403".

- different set of device control registers.
- non-standard access to the time base.
- 16 byte cache lines.

Approved by: Eduardo Horvath <eeh@netbsd.org>

Added L3CR_CONFIG to the parameter list for 745x L3 cache configuration.

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

Remove OLDPMAP support.

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

Added an empty shell for signal delivery. Now we just have to fill the
machine dependant bits.

As we use one FreeBSD file for COMPAT_DARWIN, we must include file.freebsd

The kernel now builds with COMPAT_DARWIN.

Added support for Darwin's PowerPC-only system calls:
ppccalls, with system call numbers starting at 0x6000
fasttraps, with system call numbers starting at 0x7FF0

Because the Mach system call dispatching code has grown a bit
too much, introduce an inline function to handle it (mach_syscall_dispatch).

While we are there, remove the Mach and Linux includes from
arch/powerpc/powerpc/syscall.c and push them into
arch/powerpc/powerpc/{mach|linux}_syscall.c

Add COMPAT_MACH and EXEC_MACHO support on the PowerPC

Prepare syscall.c for COMPAT_MACH support. linux_syscall_intern is
moved to a Linux specific file, child_return is moved to trap.c,
and we introduce a EMULNAME macro co that syscall.c can be included to
define the system call handler for another emulation.

Moved binary compatibility options from arch directory to cpu directory

defflag PMAPDEBUG, PMAPCHECK, and PMAPCOUNTERS into opt_pmap.h

reimplement copy{in,out}str() similarly to copy{in,out}()
(instead of the old way of calling [fs]ubyte() in a loop).

Add a common file to do pmap_zero_page/pmap_copy_page/pmap_pageidlezero and
pmap_syncicache. This file uses a ppc feature in a sick and twisted way
to avoid mapping the physical pages used by those routines. It performs
the operations with the MMU disabled but PPC exception save and retstore
the machine state and are invoked with the MMU disabled, this doesn't have
an adverse effect on the system.

Currently only enable for MPC6xx and !OLDPMAP.

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.

branches: 1.31.4;
Some files have been moved into powerpc/ibm4xx.

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

add support for kgdb over zs

Change L2CR_CONFIG from defflag to defparam, since it takes an argument.

- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

- replace "defopt" with "defparam" for options which must take a value,
as config(8) will warn for value-less defparam options
- minor whitespace/formatting cleanup
- consolidate opt_tcp_recvspace.h and opt_tcp_sendspace.h into opt_tcp_space.h

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.24.6;
Create an opt_openpic.h and add both OPENPIC and OPENPIC_SERIAL_MODE to it.

Make all powerpc ports use a common Makefile.powerpc (except walnut)
Enforce -Wmissing-prototypes -Wstrict-prototypes for all ppc ports.
Split out macppc cpu support and make common to mpc6xx ports. Make
other mpc6xx ports use it. Add evcnts for mpc6xx traps.

branches: 1.22.2;
Build for kgdb as well as for ddb (mutually exclusive).

Forgot to commit this -- move file .../bus_dma.c line to files.${machine}.

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/

branches: 1.17.2;
Add powerpc/powerpc/powerpc_machdep.c

defopt openpic

Split OpenPIC support into powerpc so ports only need minimal custom
configuration. openpic_init() now takes a single argument that is the
base of the OpenPIC register space.

Add placeholder for AltiVec support file.

Allow arch-specific code to specify in4_cksum() like it can specify
in_cksum().

Move signal management code common to all PowerPC platforms (sendsig(),
sigreturn(), sigcode) to a single place in the shared powerpc directory.
(The struct sigcontext etc. definitions were already being shared.)

branches: 1.11.8; 1.11.14;
RCS ID police

powerpc/bcopy.c is unnecessary.

Make signal delivery work again.

Rename NetBSD/powerpc to NetBSD/ofppc.
New sys/arch/powerpc with PowerPC-generic stuff.

Catch up with changes in dev/ofw. Add mainbus.

Slight rearrangement.

Import DDB from OpenBSD/powerpc.

RCSID Police.

- Pull in new ofwmagic.S and soft_spl.c files
- firepowerbugs -> firmworksbugs

Rename recently checked in KGDB to IPKDB to resolve conflicts with older KGDB

PowerPC port

include pmap_pvt.c in bridge mode as well

powerpc: Implement pv-tracking for unmanaged pages.

Needed for drm.

For Explora 451, call calc_delayconst() before pckbc_cnattach(), which
depends on delay() and DELAY().

Unfortunately, proplib(9) API is not available for MD codes, that are
called before consinit() (since pool(9) is not initialized yet).

Therefore, hard-code CPU frequency to calc_delayconst() in case
"processor-frequency" is not initialized.

branches: 1.97.2;
make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

Introduce PMAP_TLBDEBUG option for ibm4xx: clear only TLBHI[V] bit when
TLB entry is invalidated, instead of clearing entire TLBHI register.

Make copystr() a MI C function, part of libkern and shared on all
architectures.

Notes:

- On alpha and ia64 the function is kept but gets renamed locally to avoid
symbol collision. This is because on these two arches, I am not sure
whether the ASM callers do not rely on fixed registers, so I prefer to
keep the ASM body for now.
- On Vax, only the symbol is removed, because the body is used from other
functions.
- On RISC-V, this change fixes a bug: copystr() was just a wrapper around
strlcpy(), but strlcpy() makes the operation less safe (strlen on the
source beyond its size).
- The kASan, kCSan and kMSan wrappers are removed, because now that
copystr() is in C, the compiler transformations are applied to it,
without the need for manual wrappers.

Could test on amd64 only, but should be fine.

Add PPC_IBM440 flag as 440 is significantly different from 40x processors.
(It may be more easily supported by booke than by ibm4xx.)

branches: 1.92.4; 1.92.6;
Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos

branches: 1.90.2;
add clock speed control for 970MP CPUs

branches: 1.89.28;
compat16 -> compat_16

sigcode is dependant on compat_16

Enable sljit and bpfjit on powerpc.

remove unused OPENPIC flags.

branches: 1.85.2;
Support Cache Protocol 'MEI' with MULTIPROCESSOR.

move common tlb stuff to uvm

branches: 1.83.2;
Add PMAP_MINIMALTLB defflag

branches: 1.82.2; 1.82.6; 1.82.8;
Add VERBOSE_INITPPC flag

Unconditionally build fixup.c

Move the interrupt stub from booke_stubs.c into its own intr_stubs.c.
Move the "null" intrsw (used in startup) to intr_stubs.c as well.

Take the fast softint support in e500_intr.c and make generic so that it can
be used to provide fast softint for other interrupt implementations.

Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

Remove <machine/atomic.h>; use <sys/atomic.h> instead.
Add <powerpc/cpuset.h> (for mpc85xx pmap).
Add some initial MP code for mpc85xx
Rework ipi code to be common across all ppcs
Change PPC to keep curlwp in %r13 while in the kernel.
Move astpending from cpu_info to mdlwp
Improve cpu_need_resched to be more MP friendly.

branches: 1.76.2;
Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Remove Darwin, MACH and Mach-O support.

When an OEA kernel is configured for multiple MMU types, use the new
powerpc fixup mechanism to bind the kernel to a particular MMU. This
avoids an indirect call for every pmap call.

branches: 1.73.2;
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.

branches: 1.72.2; 1.72.4;
Add PPC_BOOKE cputype and booke files.

branches: 1.71.4;
Since oea pmap.c is #included many times, put kernel_pmap_ptr into
its own source module to avoid multiple initialized data definitions.

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

branches: 1.69.6; 1.69.10; 1.69.16; 1.69.18; 1.69.28;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

Rewrite a big chunk of the pmap and locore code for powerpc to better
deal with the 64bit bridge mode. pmap changes by Matt Thomas, rest by myself.

Change pmap.c to work similar to exec_elf.c to allow us to compile in
multiple pmaps to a single kernel. This allows the pmap for bridge64 to
co-exist with the 32bit pmap.

Yank __HAVE_PMAP_PHYSSEG from all the oea code.

Add a new global, "oeacpufeat", which is used early in locore to determine
certain cpu features. This allows us to conditionalize code early in the boot
for certain CPUs that have special needs.

Yank most of the ifdef PPC_OEA_BRIDGE64 code from almost every file it was
found in. Some of it seemed incorrect, and my 7044 booted just fine
without it. It would appear that the bridge cpus treat BAT instructions
as nops, so they seem to be safe.

In ofppc, check the oeacpufeat, and if we are on a 64bit proc, clear
MSR[SF], and ASR[V].

With all of these changes, a kernel with both PPC_OEA and PPC_OEA_BRIDGE64
will boot on the POWERIII-2 cpu. However, it will not yet boot on a 32bit
cpu, because of CACHELINESIZE. Work remains to be done there to fix that.

Refactor in_cksum/in4_cksum/in6_cksum implementations:
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.

This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.

Build kobj_machdep.c if MODULAR.

branches: 1.65.2; 1.65.8;
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.

branches: 1.64.8; 1.64.10; 1.64.12; 1.64.14;
Remove leftover netns stuff.

branches: 1.63.6; 1.63.8; 1.63.14;
Merge newlock2 to head.

branches: 1.62.4;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.61.4; 1.61.8;
merge ktrace-lwp.

branches: 1.60.2;
Remove the hack to compile oea/pmap.c with -Wno-cast-qual, and instead
make use of the new __UNVOLATILE() macro in memset() usage.

Put a band-aid over the cast qualification warnings for oea/pmap.c.
It cannot be compiled with -Wno-cast-qual due to a volatile pointer
being passed to memset(), and there's no easy way other than open-
coding memset() to fix this. So instead we cheat for now and add
-Wno-cast-qual to CFLAGS for this file. To be documented in doc/HACKS.

Move all the MD bits of commpage to a new file.
Map the comm page as RW in kernel (we want to modify it but not to execute it),
and RX in userland (no need to modify it but we want to execute it

Add entry for netns/ns_cksum.c

defparam PMAP_MEMLIMIT

Include arch/powerpc/ibm4xx/intr.c only if a particular board actually
uses the generic 4xx interrupt implementation.
There are some 4xx boards with entirely different interrupt controllers.

Add siginfo support for PowerPC.

Remove SPILLSTK leftovers.

Add PTEGCOUNT defparam for opt_pmap.h

Add PPC_OEA64 and netbsd32_sigcode.S

Elimindate MD setrunqueue/remrunqueue (which were out-of-date compared to
the canonical versions in kern_synch.c). Define __HAVE_BIGENDIAN_BITOPS
so the canonical versions will be used but will store priorities in the
desired (MSB) order for PowerPC (which allows the use of the cntlzw (count
leading zeroes, word) instruction in locore_subr.S to find the proper
priority).

branches: 1.49.2;
rename Locore.c -> locore_c.c so that we can compile on case insensitive
filesystems. (from John Gordon)

Add CLOCKBASE to opt_ppcparam.h.

Add support for the IBM 403GCX cpu. Enabled with "options PPC_IBM403".

- different set of device control registers.
- non-standard access to the time base.
- 16 byte cache lines.

Approved by: Eduardo Horvath <eeh@netbsd.org>

Added L3CR_CONFIG to the parameter list for 745x L3 cache configuration.

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

Remove OLDPMAP support.

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

Added an empty shell for signal delivery. Now we just have to fill the
machine dependant bits.

As we use one FreeBSD file for COMPAT_DARWIN, we must include file.freebsd

The kernel now builds with COMPAT_DARWIN.

Added support for Darwin's PowerPC-only system calls:
ppccalls, with system call numbers starting at 0x6000
fasttraps, with system call numbers starting at 0x7FF0

Because the Mach system call dispatching code has grown a bit
too much, introduce an inline function to handle it (mach_syscall_dispatch).

While we are there, remove the Mach and Linux includes from
arch/powerpc/powerpc/syscall.c and push them into
arch/powerpc/powerpc/{mach|linux}_syscall.c

Add COMPAT_MACH and EXEC_MACHO support on the PowerPC

Prepare syscall.c for COMPAT_MACH support. linux_syscall_intern is
moved to a Linux specific file, child_return is moved to trap.c,
and we introduce a EMULNAME macro co that syscall.c can be included to
define the system call handler for another emulation.

Moved binary compatibility options from arch directory to cpu directory

defflag PMAPDEBUG, PMAPCHECK, and PMAPCOUNTERS into opt_pmap.h

reimplement copy{in,out}str() similarly to copy{in,out}()
(instead of the old way of calling [fs]ubyte() in a loop).

Add a common file to do pmap_zero_page/pmap_copy_page/pmap_pageidlezero and
pmap_syncicache. This file uses a ppc feature in a sick and twisted way
to avoid mapping the physical pages used by those routines. It performs
the operations with the MMU disabled but PPC exception save and retstore
the machine state and are invoked with the MMU disabled, this doesn't have
an adverse effect on the system.

Currently only enable for MPC6xx and !OLDPMAP.

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.

branches: 1.31.4;
Some files have been moved into powerpc/ibm4xx.

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

add support for kgdb over zs

Change L2CR_CONFIG from defflag to defparam, since it takes an argument.

- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

- replace "defopt" with "defparam" for options which must take a value,
as config(8) will warn for value-less defparam options
- minor whitespace/formatting cleanup
- consolidate opt_tcp_recvspace.h and opt_tcp_sendspace.h into opt_tcp_space.h

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.24.6;
Create an opt_openpic.h and add both OPENPIC and OPENPIC_SERIAL_MODE to it.

Make all powerpc ports use a common Makefile.powerpc (except walnut)
Enforce -Wmissing-prototypes -Wstrict-prototypes for all ppc ports.
Split out macppc cpu support and make common to mpc6xx ports. Make
other mpc6xx ports use it. Add evcnts for mpc6xx traps.

branches: 1.22.2;
Build for kgdb as well as for ddb (mutually exclusive).

Forgot to commit this -- move file .../bus_dma.c line to files.${machine}.

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/

branches: 1.17.2;
Add powerpc/powerpc/powerpc_machdep.c

defopt openpic

Split OpenPIC support into powerpc so ports only need minimal custom
configuration. openpic_init() now takes a single argument that is the
base of the OpenPIC register space.

Add placeholder for AltiVec support file.

Allow arch-specific code to specify in4_cksum() like it can specify
in_cksum().

Move signal management code common to all PowerPC platforms (sendsig(),
sigreturn(), sigcode) to a single place in the shared powerpc directory.
(The struct sigcontext etc. definitions were already being shared.)

branches: 1.11.8; 1.11.14;
RCS ID police

powerpc/bcopy.c is unnecessary.

Make signal delivery work again.

Rename NetBSD/powerpc to NetBSD/ofppc.
New sys/arch/powerpc with PowerPC-generic stuff.

Catch up with changes in dev/ofw. Add mainbus.

Slight rearrangement.

Import DDB from OpenBSD/powerpc.

RCSID Police.

- Pull in new ofwmagic.S and soft_spl.c files
- firepowerbugs -> firmworksbugs

Rename recently checked in KGDB to IPKDB to resolve conflicts with older KGDB

PowerPC port

powerpc: Implement pv-tracking for unmanaged pages.

Needed for drm.

For Explora 451, call calc_delayconst() before pckbc_cnattach(), which
depends on delay() and DELAY().

Unfortunately, proplib(9) API is not available for MD codes, that are
called before consinit() (since pool(9) is not initialized yet).

Therefore, hard-code CPU frequency to calc_delayconst() in case
"processor-frequency" is not initialized.

branches: 1.97.2;
make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

Introduce PMAP_TLBDEBUG option for ibm4xx: clear only TLBHI[V] bit when
TLB entry is invalidated, instead of clearing entire TLBHI register.

Make copystr() a MI C function, part of libkern and shared on all
architectures.

Notes:

- On alpha and ia64 the function is kept but gets renamed locally to avoid
symbol collision. This is because on these two arches, I am not sure
whether the ASM callers do not rely on fixed registers, so I prefer to
keep the ASM body for now.
- On Vax, only the symbol is removed, because the body is used from other
functions.
- On RISC-V, this change fixes a bug: copystr() was just a wrapper around
strlcpy(), but strlcpy() makes the operation less safe (strlen on the
source beyond its size).
- The kASan, kCSan and kMSan wrappers are removed, because now that
copystr() is in C, the compiler transformations are applied to it,
without the need for manual wrappers.

Could test on amd64 only, but should be fine.

Add PPC_IBM440 flag as 440 is significantly different from 40x processors.
(It may be more easily supported by booke than by ibm4xx.)

branches: 1.92.4; 1.92.6;
Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos

branches: 1.90.2;
add clock speed control for 970MP CPUs

branches: 1.89.28;
compat16 -> compat_16

sigcode is dependant on compat_16

Enable sljit and bpfjit on powerpc.

remove unused OPENPIC flags.

branches: 1.85.2;
Support Cache Protocol 'MEI' with MULTIPROCESSOR.

move common tlb stuff to uvm

branches: 1.83.2;
Add PMAP_MINIMALTLB defflag

branches: 1.82.2; 1.82.6; 1.82.8;
Add VERBOSE_INITPPC flag

Unconditionally build fixup.c

Move the interrupt stub from booke_stubs.c into its own intr_stubs.c.
Move the "null" intrsw (used in startup) to intr_stubs.c as well.

Take the fast softint support in e500_intr.c and make generic so that it can
be used to provide fast softint for other interrupt implementations.

Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

Remove <machine/atomic.h>; use <sys/atomic.h> instead.
Add <powerpc/cpuset.h> (for mpc85xx pmap).
Add some initial MP code for mpc85xx
Rework ipi code to be common across all ppcs
Change PPC to keep curlwp in %r13 while in the kernel.
Move astpending from cpu_info to mdlwp
Improve cpu_need_resched to be more MP friendly.

branches: 1.76.2;
Move powerpc to use pcu to manage FPU/AltiVec/SPE.

Remove Darwin, MACH and Mach-O support.

When an OEA kernel is configured for multiple MMU types, use the new
powerpc fixup mechanism to bind the kernel to a particular MMU. This
avoids an indirect call for every pmap call.

branches: 1.73.2;
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.

branches: 1.72.2; 1.72.4;
Add PPC_BOOKE cputype and booke files.

branches: 1.71.4;
Since oea pmap.c is #included many times, put kernel_pmap_ptr into
its own source module to avoid multiple initialized data definitions.

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

branches: 1.69.6; 1.69.10; 1.69.16; 1.69.18; 1.69.28;
Ifdef out all the MPC601 code with PPC_OEA601. Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches. Noted by mlelstv.

Rewrite a big chunk of the pmap and locore code for powerpc to better
deal with the 64bit bridge mode. pmap changes by Matt Thomas, rest by myself.

Change pmap.c to work similar to exec_elf.c to allow us to compile in
multiple pmaps to a single kernel. This allows the pmap for bridge64 to
co-exist with the 32bit pmap.

Yank __HAVE_PMAP_PHYSSEG from all the oea code.

Add a new global, "oeacpufeat", which is used early in locore to determine
certain cpu features. This allows us to conditionalize code early in the boot
for certain CPUs that have special needs.

Yank most of the ifdef PPC_OEA_BRIDGE64 code from almost every file it was
found in. Some of it seemed incorrect, and my 7044 booted just fine
without it. It would appear that the bridge cpus treat BAT instructions
as nops, so they seem to be safe.

In ofppc, check the oeacpufeat, and if we are on a 64bit proc, clear
MSR[SF], and ASR[V].

With all of these changes, a kernel with both PPC_OEA and PPC_OEA_BRIDGE64
will boot on the POWERIII-2 cpu. However, it will not yet boot on a 32bit
cpu, because of CACHELINESIZE. Work remains to be done there to fix that.

Refactor in_cksum/in4_cksum/in6_cksum implementations:
- All three functions are included in the kernel by default.
They call a backend function cpu_in_cksum after possibly
computing the checksum of the pseudo header.
- cpu_in_cksum is the core to implement the one-complement sum.
The default implementation is moderate fast on most platforms
and provides a 32bit accumulator with 16bit addends for L32 platforms
and a 64bit accumulator with 32bit addends for L64 platforms.
It handles edge cases like very large mbuf chains (could happen with
native IPv6 in the future) and provides a good base for new native
implementations.
- Modify i386 and amd64 assembly to use the new interface.

This disables the MD implementations on !x86 until the conversion is
done. For Alpha, the portable version is faster.

Build kobj_machdep.c if MODULAR.

branches: 1.65.2; 1.65.8;
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.

branches: 1.64.8; 1.64.10; 1.64.12; 1.64.14;
Remove leftover netns stuff.

branches: 1.63.6; 1.63.8; 1.63.14;
Merge newlock2 to head.

branches: 1.62.4;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.61.4; 1.61.8;
merge ktrace-lwp.

branches: 1.60.2;
Remove the hack to compile oea/pmap.c with -Wno-cast-qual, and instead
make use of the new __UNVOLATILE() macro in memset() usage.

Put a band-aid over the cast qualification warnings for oea/pmap.c.
It cannot be compiled with -Wno-cast-qual due to a volatile pointer
being passed to memset(), and there's no easy way other than open-
coding memset() to fix this. So instead we cheat for now and add
-Wno-cast-qual to CFLAGS for this file. To be documented in doc/HACKS.

Move all the MD bits of commpage to a new file.
Map the comm page as RW in kernel (we want to modify it but not to execute it),
and RX in userland (no need to modify it but we want to execute it

Add entry for netns/ns_cksum.c

defparam PMAP_MEMLIMIT

Include arch/powerpc/ibm4xx/intr.c only if a particular board actually
uses the generic 4xx interrupt implementation.
There are some 4xx boards with entirely different interrupt controllers.

Add siginfo support for PowerPC.

Remove SPILLSTK leftovers.

Add PTEGCOUNT defparam for opt_pmap.h

Add PPC_OEA64 and netbsd32_sigcode.S

Elimindate MD setrunqueue/remrunqueue (which were out-of-date compared to
the canonical versions in kern_synch.c). Define __HAVE_BIGENDIAN_BITOPS
so the canonical versions will be used but will store priorities in the
desired (MSB) order for PowerPC (which allows the use of the cntlzw (count
leading zeroes, word) instruction in locore_subr.S to find the proper
priority).

branches: 1.49.2;
rename Locore.c -> locore_c.c so that we can compile on case insensitive
filesystems. (from John Gordon)

Add CLOCKBASE to opt_ppcparam.h.

Add support for the IBM 403GCX cpu. Enabled with "options PPC_IBM403".

- different set of device control registers.
- non-standard access to the time base.
- 16 byte cache lines.

Approved by: Eduardo Horvath <eeh@netbsd.org>

Added L3CR_CONFIG to the parameter list for 745x L3 cache configuration.

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

Remove OLDPMAP support.

Perform a rototill of the powerpc code. Mandate use of SPRG0 to store
a pointer to current cpu's cpu_info structure. Use cpu_info for
intstk,intr_depth,still_stk,idle_pcb,curpcb,curlwp,etal even on
non-MULTIPROCESSOR machines. Add common macros GET_CPUINFO and
INIT_CPUINFO to get and initialize the cpu_info struct on startup. Make
ibm4xx use the standard <powerpc/frame.h>. Use IFRAME_xx in ibm4xx
trap_subr.S instead of explicit magic offsets. Move INTSTK and SPILLSTK
to std.<platform>. Change faultbuf to a struct instead of an array.

On MPC6XX cpus, stop using the vector page for temporary space and use
reserved space in cpu_info.

Added an empty shell for signal delivery. Now we just have to fill the
machine dependant bits.

As we use one FreeBSD file for COMPAT_DARWIN, we must include file.freebsd

The kernel now builds with COMPAT_DARWIN.

Added support for Darwin's PowerPC-only system calls:
ppccalls, with system call numbers starting at 0x6000
fasttraps, with system call numbers starting at 0x7FF0

Because the Mach system call dispatching code has grown a bit
too much, introduce an inline function to handle it (mach_syscall_dispatch).

While we are there, remove the Mach and Linux includes from
arch/powerpc/powerpc/syscall.c and push them into
arch/powerpc/powerpc/{mach|linux}_syscall.c

Add COMPAT_MACH and EXEC_MACHO support on the PowerPC

Prepare syscall.c for COMPAT_MACH support. linux_syscall_intern is
moved to a Linux specific file, child_return is moved to trap.c,
and we introduce a EMULNAME macro co that syscall.c can be included to
define the system call handler for another emulation.

Moved binary compatibility options from arch directory to cpu directory

defflag PMAPDEBUG, PMAPCHECK, and PMAPCOUNTERS into opt_pmap.h

reimplement copy{in,out}str() similarly to copy{in,out}()
(instead of the old way of calling [fs]ubyte() in a loop).

Add a common file to do pmap_zero_page/pmap_copy_page/pmap_pageidlezero and
pmap_syncicache. This file uses a ppc feature in a sick and twisted way
to avoid mapping the physical pages used by those routines. It performs
the operations with the MMU disabled but PPC exception save and retstore
the machine state and are invoked with the MMU disabled, this doesn't have
an adverse effect on the system.

Currently only enable for MPC6xx and !OLDPMAP.

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.

branches: 1.31.4;
Some files have been moved into powerpc/ibm4xx.

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

add support for kgdb over zs

Change L2CR_CONFIG from defflag to defparam, since it takes an argument.

- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

- replace "defopt" with "defparam" for options which must take a value,
as config(8) will warn for value-less defparam options
- minor whitespace/formatting cleanup
- consolidate opt_tcp_recvspace.h and opt_tcp_sendspace.h into opt_tcp_space.h

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.24.6;
Create an opt_openpic.h and add both OPENPIC and OPENPIC_SERIAL_MODE to it.

Make all powerpc ports use a common Makefile.powerpc (except walnut)
Enforce -Wmissing-prototypes -Wstrict-prototypes for all ppc ports.
Split out macppc cpu support and make common to mpc6xx ports. Make
other mpc6xx ports use it. Add evcnts for mpc6xx traps.

branches: 1.22.2;
Build for kgdb as well as for ddb (mutually exclusive).

Forgot to commit this -- move file .../bus_dma.c line to files.${machine}.

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/

branches: 1.17.2;
Add powerpc/powerpc/powerpc_machdep.c

defopt openpic

Split OpenPIC support into powerpc so ports only need minimal custom
configuration. openpic_init() now takes a single argument that is the
base of the OpenPIC register space.

Add placeholder for AltiVec support file.

Allow arch-specific code to specify in4_cksum() like it can specify
in_cksum().

Move signal management code common to all PowerPC platforms (sendsig(),
sigreturn(), sigcode) to a single place in the shared powerpc directory.
(The struct sigcontext etc. definitions were already being shared.)

branches: 1.11.8; 1.11.14;
RCS ID police

powerpc/bcopy.c is unnecessary.

Make signal delivery work again.

Rename NetBSD/powerpc to NetBSD/ofppc.
New sys/arch/powerpc with PowerPC-generic stuff.

Catch up with changes in dev/ofw. Add mainbus.

Slight rearrangement.

Import DDB from OpenBSD/powerpc.

RCSID Police.

- Pull in new ofwmagic.S and soft_spl.c files
- firepowerbugs -> firmworksbugs

Rename recently checked in KGDB to IPKDB to resolve conflicts with older KGDB

PowerPC port

For Explora 451, call calc_delayconst() before pckbc_cnattach(), which
depends on delay() and DELAY().

Unfortunately, proplib(9) API is not available for MD codes, that are
called before consinit() (since pool(9) is not initialized yet).

Therefore, hard-code CPU frequency to calc_delayconst() in case
"processor-frequency" is not initialized.

make process_machdep.c included always since it provides register i/o used by
sys_process_getlwpstatus.c which is always included.

harmonize process_machdep.c inclusion.

Introduce PMAP_TLBDEBUG option for ibm4xx: clear only TLBHI[V] bit when
TLB entry is invalidated, instead of clearing entire TLBHI register.

Make copystr() a MI C function, part of libkern and shared on all
architectures.

Notes:

- On alpha and ia64 the function is kept but gets renamed locally to avoid
symbol collision. This is because on these two arches, I am not sure
whether the ASM callers do not rely on fixed registers, so I prefer to
keep the ASM body for now.
- On Vax, only the symbol is removed, because the body is used from other
functions.
- On RISC-V, this change fixes a bug: copystr() was just a wrapper around
strlcpy(), but strlcpy() makes the operation less safe (strlen on the
source beyond its size).
- The kASan, kCSan and kMSan wrappers are removed, because now that
copystr() is in C, the compiler transformations are applied to it,
without the need for manual wrappers.

Could test on amd64 only, but should be fine.

Add PPC_IBM440 flag as 440 is significantly different from 40x processors.
(It may be more easily supported by booke than by ibm4xx.)

branches: 1.92.4; 1.92.6;
Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos