Drop using deprecated proplib functions.

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file board_prop.c was initially added on branch matt-nb5-pq3.

struct device * -> device_t
struct cfdata * -> cfdata_t
split device/softc (CFATTACH_DECL_NEW)
use device_accessors and device_private
constify

branches: 1.2.4; 1.2.6;
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: 1.1.2; 1.1.4;
file booke_autoconf.c was initially added on branch matt-nb5-pq3.

Style and cosmetic changes. No binary changes intended.

Add missing $NetBSD$ and/or __KERNEL_RCSID.

Rework to get the inlining working right. Also make slightly more portable
among powerpc variants.

branches: 1.2.4; 1.2.6;
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: 1.1.2; 1.1.4;
file booke_cache.c was initially added on branch matt-nb5-pq3.

Move the at-shutdown call to resettodr() from cpu_reboot() to kern_reboot().

It's a small step, but it's a step.

fix various typos in comments.

- Write-back msgbuf and update bootstr for reboot from halt.
- Remove dead code.

branches: 1.32.2; 1.32.4;
Include missing ksyms.h, opt_ddb.h, and opt_multiprocessor.h.

Style and cosmetic changes. No binary changes intended.

uvm_availmem(): give it a boolean argument to specify whether a recent
cached value will do, or if the very latest total must be fetched. It can
be called thousands of times a second and fetching the totals impacts not
only the calling LWP but other CPUs doing unrelated activity in the VM
system.

Rename uvm_free() -> uvm_availmem().

s/sucess/success/ in comment.

uvmexp.free -> uvm_free()

Detangle some of the PowerPC CPU configuration spaghetti.

branches: 1.25.16;
PR port-evbppc/51564 (myself): wait for console input after halting the machine.
ok joerg

branches: 1.24.2;
Adapt to common pmap changes.

ddb MP support

When pmap_bootstrap is called, kcpuset_running has not been created yet.

branches: 1.21.2;
Change insn mask to properly match instructions (bctr/blr)

use cpu_{g,s}etmodel

Merge riastradh-drm2 to HEAD.

kcpuset_t changes for the pmap and removal of __cpuset_t

branches: 1.17.2; 1.17.8;
Make bus_dmamap_sync a noop for BookE.

branches: 1.16.2;
Add a machine splhist command to give (a incomplete) spl history.
(only the most recent are going to be accurate).

splraise(6) from 0 at 549214603
splraise(7) from 6 at 549214643 (+40)
splx(6) from 7 at 549214691 (+48)
splx(0) from 6 at 549214730 (+39)

If allocating lots of VA space for an io device, try to 'reserve' the space
so that the TLB might be able to create a large TLB entry to map it all.

branches: 1.14.2;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Add missing $NetBSD$ and/or __KERNEL_RCSID.

Add cpu_hatch and cpu_boot_secondary_cpus.

Cleanup comments in pmap_tlb.c. Attach tlb evcnts.
eliminate ti_mask
Cleanup some of the MP code. Conditionalize shootdown code.

Reap the ci_ev_soft* evcnts since every variant implements __HAVE_FAST_SOFTINTS

Fixup PSL handling to be tolerant of modules. Move evbppc psl changes
into powerpc psl.h

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.

lcsplx is dead. remove last vestiges of it.

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: 1.5.2;
Cast physmem to uint64_t before calling ctob to avoid sign extension errors.

branches: 1.4.2;
add begging of single step support. Since BookE doesn't support PSL_SE, if
userret find PSL_SE set in SRR1, it will call booke_sstep to setup the
debug registers.

Count debug traps.

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file booke_machdep.c was initially added on branch matt-nb5-pq3.

Partially fix PMAP_MINIMALTLB compilation. From andvar@

branches: 1.38.6;
KNF.

Spaces to TAB

MI PMAP hardware page table walker support.

This is based on code given to me by Matt Thomas a long time ago with
many updates and bugs fixes from me.

Rename pmap_segtab_t *stp to stb for consistency with a future
pmap_pdetab_t *ptb. pmap_pdetab_t *ptp would be far too confusing.

NFC. Same code before and after.

Pass the pmap in tlb_set_asid for the benefit of aarch64.

Use KERNEL_PID instead of 0. NFC.

Support pmap_growkernel and KASAN shadow mapping of the new KVA.

Neither mips nor ppc booke actually use pmap_growkernel (at present).

Thanks to rin@ for testing a similar patch on ppc booke.

Fix pmap_procwr() for powerpc/booke:

- Use PAGE_MASK, not PAGE_SIZE, to calculate page offset.
- Do not drop page offset of target address.

Support __HAVE_PMAP_PV_TRACK in sys/uvm/pmap based pmaps (aka common pmap)

branches: 1.29.2;
Include missing opt_multiprocessor.h and opt_pmap.h.

Style and cosmetic changes. No binary changes intended.

With DEBUG defined, it's possible to execute a TLB-vs-segmap consistency
check from a (soft) interrupt handler. But if a platform does not otherwise
require the pmap_tlb_miss_lock, then where will be a brief window of
inconsistency that, while harmless, will still fire an assertion in the
consistency check.

Fix this with the following changes:
1- Refactor the pmap_tlb_miss_lock into MI code and rename it from
pmap_tlb_miss_lock_{enter,exit}() to pmap_tlb_miss_lock_{enter,exit}().
MD code can still define the "md" hooks as necessary, and if so, will
override the common implementation.
2- Provde a pmap_bootstrap_common() function to perform common pmap bootstrap
operations, namely initializing the pmap_tlb_miss_lock if it's needed.
If MD code overrides the implementation, it's responsible for initializing
its own lock.
3- Call pmap_bootstrap_common() from the mips, powerpc booke, and riscv
pmap_bootstrap() routines. (This required adding one for riscv.)
4- Switch powerpc booke to the common pmap_tlb_miss_lock.
5- Enable pmap_tlb_miss_lock if DEBUG is defined, even if it's not otherwise
required.

PR port-mips/55062 (Failed assertion in pmap_md_tlb_check_entry())

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.25.14; 1.25.16;
Tell mpc85xx about uvm_hotplug(9)

Should fix the evbppc build breakage.

branches: 1.24.2;
Adapt to common pmap changes.

Remove SYSVSHM-specific code. The value of shminfo.shmall is zero at
the time this pmap initialization code is called, so the increment is
a no-op. (Thanks christos@ for pointing it out.)

Avoid race condition between PTE update and TLB miss walk.

When pmap_bootstrap is called, kcpuset_running has not been created yet.

Use correct register for next cacheline address.

Initialize lock objects.

branches: 1.18.6;
Merge riastradh-drm2 to HEAD.

kcpuset_t changes for the pmap and removal of __cpuset_t

branches: 1.16.2; 1.16.4; 1.16.10;
Fool gcc into thinking we aren't using r31. We do use it but we don't
clobber it since it save and restore it from a temporary register.

More cleanup. Use a union (pmap_segtab) and a typedef (pmap_segtab_t). Add
more functionality from the mips pmap and try to make it more common to ease
the transition for mips in the future.

s/seg_tab/seg_ptr/

Add support PMAP_MINIMALTLB option. This changes the default use of TLB1
entries to map all of physical memory to using two TLB1 entries, one for
mapping text and one for data. The rest of memory is mapped using the
page table which is updated as needed. This is used to trap memory
corruption issues.

branches: 1.12.2;
- bringing kmeminit_nkmempages back and revert pmaps that called this early
- use nkmempages to scale the kmem_arena
- reducing diff to pre kmem/vmem change
(NKMEMPAGES_MAX_DEFAULT will need adjusting on some archs)

extending vmem(9) to be able to allocated resources for it's own needs.
simplifying uvm_map handling (no special kernel entries anymore no relocking)
make malloc(9) a thin wrapper around kmem(9)
(with private interface for interrupt safety reasons)

releng@ acknowledged

branches: 1.10.2; 1.10.6;
Modify *ASSERTMSG() so they are now used as variadic macros. The main goal
is to provide routines that do as KASSERT(9) says: append a message
to the panic format string when the assertion triggers, with optional
arguments.

Fix call sites to reflect the new definition.

Discussed on tech-kern@. See
http://mail-index.netbsd.org/tech-kern/2011/09/07/msg011427.html

Add missing $NetBSD$ and/or __KERNEL_RCSID.

Add an empty pmap_md_tlb_info_init.

Move some MD parts back to the booke pmap.c. Cleanup initialization a bit.

PowerPC now exports a common view of cpu.h, vmparam.h and pmap.h
when building a MODULAR kernel or compiling _MODULE.
It should be noted that MODULAR or _MODULE export a view of the kernel
as being MULTIPROCESSOR (even if isn't).
The shared pmap TLB uses mdpg in places where it used mdpg to avoid
deadly embrance inclusion problems.

For debugging, use UVMHIST to create kernel histories pmaphist and
pmapexechist. This replaces the old pmapdebug/PDB stuff.
In ddb, you can just use kernhist_dump(pmaphist) to view the history
or vmstat -H from userland.

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: 1.3.2; 1.3.4;
Use _PMAP_PRIVATE to control the inclusion of <powerpc/booke/cpuvar.h>.
This prevents most of the MI files from depending on it.

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file booke_pmap.c was initially added on branch matt-nb5-pq3.

Pass the pmap in tlb_set_asid for the benefit of aarch64.

Style and cosmetic changes. No binary changes intended.

Adapt to common pmap changes.

branches: 1.9.12; 1.9.30;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Add missing $NetBSD$ and/or __KERNEL_RCSID.

Switch to using the common <common/pmap/tlb/tlb.h>

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.

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: 1.4.2; 1.4.4;
Make sure stub routines are not profiled.

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: 1.2.2;
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: 1.1.2; 1.1.4;
file booke_stubs.c was initially added on branch matt-nb5-pq3.

Style and cosmetic changes. No binary changes intended.

Let copyinstr(9) return ENAMETOOLONG correctly if source is not
NUL-terminated; it cannot be determined by (uint8_t)data == '\0'
since data is right shifted at the end of loop.

Found by POOL_REDZONE.

branches: 1.7.4;
Detangle some of the PowerPC CPU configuration spaghetti.

branches: 1.6.28;
#if 0 unused copyin_halfword.

branches: 1.5.2; 1.5.12;
Make sure to have copyinstr return ENAMETOOLONG if the string was too long.

branches: 1.4.2; 1.4.6; 1.4.8;
Cleanup includes.

branches: 1.3.2; 1.3.4;
add begging of single step support. Since BookE doesn't support PSL_SE, if
userret find PSL_SE set in SRR1, it will call booke_sstep to setup the
debug registers.

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file copyin.c was initially added on branch matt-nb5-pq3.

These are not used so nuke 'em.

branches: 1.2.4; 1.2.8;
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: 1.1.2; 1.1.4;
file copyinstr.c was initially added on branch matt-nb5-pq3.

fix various small typos, mainly in comments.

Style and cosmetic changes. No binary changes intended.

copyoutstr(9): return ENAMETOOLONG correctly when source string is
not NUL-terminated.

copyoutstr(9): sync style with copyinstr(9).

- use variable name "done" instead of "lenp"
- return return value from setfault() on fault, instead of hardcoded EFAULT

No functional changes intended.

Comment out full function of optimized version of copyoutstr(9),
which has never been enabled so far.

Only for clarity. No binary changes.

branches: 1.5.4;
Detangle some of the PowerPC CPU configuration spaghetti.

branches: 1.4.28;
#if 0 copyout_le32 and friends, they are currently unused.

branches: 1.3.12; 1.3.26;
Cleanup includes.

branches: 1.2.4; 1.2.6;
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: 1.1.2; 1.1.4;
file copyout.c was initially added on branch matt-nb5-pq3.

These are not used so nuke 'em.

branches: 1.2.4; 1.2.8;
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: 1.1.2; 1.1.4;
file copyoutstr.c was initially added on branch matt-nb5-pq3.

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file e500_autoconf.c was initially added on branch matt-nb5-pq3.

remove DIAGNOSTIC guard around ipl definition in e500_extintr().

It is used only for KASSERTMSG() only in this method, but still expects it
to exist, even if DIAGNOSTIC is not enabled.

Use console_debbuger() or DDB guards for Debugger() and db_stack_trace_print().

Should allow to build these files without DDB enabled option.

branches: 1.47.10;
Stop using deprecated proplib functions.

s/paniced/panicked/ and s/borken/broken/ in comments.

Add missing double p and d for stopped and overriden accordingly.
Fix few more typos along the way, mainly in copy-pasted comments.

Drop unused opt_ddb.h.

Style and cosmetic changes. No binary changes intended.

XXX
Skip KASSERT which fires when !__HAVE_FAST_SOFTINTS. Just for debug.

Do not panic when splraise to IPL_NONE, which is required for
subr_cprng.c rev 1.36 and above:

http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/kern/subr_cprng.c#rev1.36

Fix false sharing problems with cpu_info. Identified with tprof(8).
This was a very nice win in my tests on a 48 CPU box.

- Reorganise cpu_data slightly according to usage.
- Put cpu_onproc into struct cpu_info alongside ci_curlwp (now is ci_onproc).
- On x86, put some items in their own cache lines according to usage, like
the IPI bitmask and ci_want_resched.

cpu_need_resched():

- Remove all code that should be MI, leaving the bare minimum under arch/.
- Make the required actions very explicit.
- Pass in LWP pointer for convenience.
- When a trap is required on another CPU, have the IPI set it locally.
- Expunge cpu_did_resched().

interrupt has two 'r's

fix another typo while I'm here (flsah)

branches: 1.37.2; 1.37.4;
Another try fixing printf format using the ultimate uintmax_t idiom.

fix printf format.

remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

Added MSI/MSI-X and interrupt_distribute(9) support for powerpc.

branches: 1.33.2;
__HAVE_PREEEMPTION -> __HAVE_PREEMPTION

Initialize timer DR.

ddb MP support

Allow to share IPI interrupt.

Initialize lock objects.

Preliminary support for P1023.

Revert previous commit.

Pass ci->ci_cpuid as irq of IST_IPI.
Avoid "panic: e500_intr_cpu_hatch: failed to establish ipi interrupt!" on cpu1.

Added missing mutex_exit() at error path.

branches: 1.24.4;
Implement MI IPI interface with cross-call support.

branches: 1.23.2;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

branches: 1.22.2;
Change a KASSERT to a KASSERTMSG.

branches: 1.21.2;
Add a machine splhist command to give (a incomplete) spl history.
(only the most recent are going to be accurate).

splraise(6) from 0 at 549214603
splraise(7) from 6 at 549214643 (+40)
splx(6) from 7 at 549214691 (+48)
splx(0) from 6 at 549214730 (+39)

Add two missing interrupt sources for P1025.

Add support for the Freescale TWR-P1025 evaluation board and the P1025/P1016
QorIQ processors. XXX tsec isn't working yet on the TWR-P1025.

If we paniced because a watchdog timed out, PSL_CE will be clear. So don't
assert PSL_CE is set if panicstr is not NULL.

Compute softintr mask correctly.

branches: 1.16.2; 1.16.8;
Modify *ASSERTMSG() so they are now used as variadic macros. The main goal
is to provide routines that do as KASSERT(9) says: append a message
to the panic format string when the assertion triggers, with optional
arguments.

Fix call sites to reflect the new definition.

Discussed on tech-kern@. See
http://mail-index.netbsd.org/tech-kern/2011/09/07/msg011427.html

Add missing $NetBSD$ and/or __KERNEL_RCSID.

Panic when an ipi is sent to unknown cpu.

Make powerpc work on BookE. At this time we only support DOZE (lightest
form of power-saving). By default, power-saving is disabled but can be
enabled in /etc/sysctl.conf by setting machdep.powersave=1

In e500_spl0, grab ci after disabling interrupts.
Consolidate a KASSERT.

Add IST_PULSE and intr_typename (converts IST_* to a name).

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.

Add an e500_idlespin to detect calls to idlespin when interrupts are blocked
or disabled.

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: 1.7.2;
Remove debugging printf. Add missing IMU2 interrupt string.

Add some grotty #ifdef'age to make this compile w/o DIAGNOSTIC.

Fix a bug in onchip_intr_name_lookup

Fix various nits related to P2020 support.

branches: 1.3.2;
Cleanup intr_info initialization. Make it per SVR.

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file e500_intr.c was initially added on branch matt-nb5-pq3.

Set correct stack pointer.
Please handle %r0 with care.

branches: 1.3.14;
Make the 85xx get closer to spinning up the secondary CPUs.
Don't assume TLB1[0] has the mapping for VA/PA 0.
Make sure the TLB1 entries that map physical memory have the M (memory
coherent) bit set.

branches: 1.2.2; 1.2.12;
More MP support.

branches: 1.1.2; 1.1.4; 1.1.6;
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.

fix typos in comments.

For struct timecounter, use C99 initializers.
Compile tested. No functional changes intended.

fix build failure with lockstat.

branches: 1.5.2; 1.5.4;
GC openpic_read.

branches: 1.4.12; 1.4.26;
Only attach tc on primary cpu.

Make powerpc work on BookE. At this time we only support DOZE (lightest
form of power-saving). By default, power-saving is disabled but can be
enabled in /etc/sysctl.conf by setting machdep.powersave=1

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file e500_timer.c was initially added on branch matt-nb5-pq3.

fix various typos in comments, documentation and messages.

Revert previous; tmpfs should be fixed instead.

Pointed out by thorpej@, thanks!

Fix kernel panic due to tmpfs.

pmap for booke assumes that the ``va'' argument for pmap_kenter_pa(9) is
page-aligned. However, by recent changes, tmpfs became to use ``va'' with
page offset via ubc_uiomove(9). So, truncate it to page boundary.

Include missing opt_multiprocessor.h and opt_pmap.h.

Style and cosmetic changes. No binary changes intended.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.18.16; 1.18.18;
Adapt to common pmap changes.

fix compile failure without DIAGNOSTIC.

- Use tlbivax instruction for TLB update/invalidate when MULTIPROCESSOR is
defined. Because TLB entry operation is not notified to another CPU.
- When TLB1 is updated, send IPI_TLB1SYNC to another CPU.

include "opt_ppcparam.h" for VERBOSE_INITPPC.

fix typo.

branches: 1.13.4; 1.13.6;
Fix typo ("then" instead of "than")

branches: 1.12.2;
Make the 85xx get closer to spinning up the secondary CPUs.
Don't assume TLB1[0] has the mapping for VA/PA 0.
Make sure the TLB1 entries that map physical memory have the M (memory
coherent) bit set.

branches: 1.11.2;
When dealing with kernel invalidations, make sure to use context-synchronizing
instructions.

Don't assume 1:1 PA:VA mapping

Fix some SHIFTOUT to SHIFTIN
Add a lookup of tlb1 by pa. fix comparisions of xtlb entries by using
masks. (since xtlb can looked up by pa & va and va may not equal pa).

Add support PMAP_MINIMALTLB option. This changes the default use of TLB1
entries to map all of physical memory to using two TLB1 entries, one for
mapping text and one for data. The rest of memory is mapped using the
page table which is updated as needed. This is used to trap memory
corruption issues.

branches: 1.7.2; 1.7.6; 1.7.8;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Don't use TLB1 entries for device access if they are writethrough or not
cache-inhibited.

Cleanup comments in pmap_tlb.c. Attach tlb evcnts.
eliminate ti_mask
Cleanup some of the MP code. Conditionalize shootdown code.

Switch to using the common <common/pmap/tlb/tlb.h>

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: 1.2.4; 1.2.6;
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: 1.1.2; 1.1.4;
file e500_tlb.c was initially added on branch matt-nb5-pq3.

Avoid race condition between PTE update and TLB miss walk.

branches: 1.10.14;
Make the 85xx get closer to spinning up the secondary CPUs.
Don't assume TLB1[0] has the mapping for VA/PA 0.
Make sure the TLB1 entries that map physical memory have the M (memory
coherent) bit set.

branches: 1.9.2;
Fix a problem where the kernel could randomly reset due to a watchdog event.
When an exception happens, the srr0 (exception PC) was being saved in the
normal location of the current callframe. This was fine except when the
routine was in its prologue after it had saved LR but had not yet updated the
stack pointer or when the routine was in its epilogue after it has restored
the stack pointer but not yet loaded the LR. In either case this would cause
the LR to be corrupted (either running the routine forever or by branching
to itself forever). Now we save and restore the contents of that memory
location so the corruption can't happen.

branches: 1.8.2; 1.8.8;
More MP support.

Make struct cpu_info the same size if building MODULAR
kernels or compiling a module.

Make a common genassym.cf (powerpc/genassym.cf) and then
only put specific stuff in foo/genassym.cf

Use FRAME_Rn (like ibm4xx and oea) instead of FRAME_n.
Include psl.h to get PSL_* values instead of getting them from assym.h

Now that the generic fixup code exists, there's no to patch the interrupts
directly since the stub fixup will do that automatically. Just need to add
stubs for the interrupt vectors and they get fixed automagically.

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: 1.2.4; 1.2.6;
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: 1.1.2; 1.1.4;
file genassym.cf was initially added on branch matt-nb5-pq3.

Style and cosmetic changes. No binary changes intended.

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file kcopy.c was initially added on branch matt-nb5-pq3.

Style and cosmetic changes. No binary changes intended.

apply changes to this file as well, as part of:
allow pcu_save() and pcu_discard() to be called on other threads,
ptrace needs to use it that way.

allow pcu_save() and pcu_discard() to be called on other threads,
ptrace needs to use it that way.

branches: 1.8.4; 1.8.8; 1.8.12;
pcu(9):
- Remove PCU_KERNEL (hi matt!) and significantly simplify the code.
This experimental feature was tried on ARM did not meet the expectations.
It may be revived one day, but it should be done in a much simpler way.
- Add a message structure for xcall function, pass the LWP ower and thus
optimise a race condition: if LWP is discarding its state on a remote CPU,
but another LWP already did it - do not cause an unecessary re-faulting.
- Reduce the variety of flags for PCU operations (only PCU_VALID and
PCU_REENABLE are used now), pass them only to the pcu_state_load().
- Rename pcu_used_p() to pcu_valid_p(); hopefully it is less confusing.
- pcu_save_all_on_cpu: SPL ought to be used here.
- Update and improve the pcu(9) man page; it needs wizd(8) though.

branches: 1.7.2;
Get rid of MDLWP_USED{FPU,VEC}

branches: 1.6.2;
Update to new pcu_state_{load,state,release} definitions

branches: 1.5.2; 1.5.12;
zero PCU area when loading used area.

branches: 1.4.2; 1.4.4;
Make sure to enable the vector unit in the PSL when returning to userland.

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

branches: 1.2.4;
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: 1.1.2;
file spe.c was initially added on branch matt-nb5-pq3.

Fix all remaining typos, mainly in comments but also in few definitions and log messages, reported by me in PR kern/54889.
Also fixed some additional typos in comments, found on review of same files or typos.

branches: 1.5.6;
Style and cosmetic changes. No binary changes intended.

Skip .machine when building with clang.

branches: 1.3.2;
Fix SPE loading typo as described in PR/45731

branches: 1.2.4; 1.2.8; 1.2.10; 1.2.14; 1.2.16;
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: 1.1.2;
file spe_subr.S was initially added on branch matt-nb5-pq3.

Use console_debbuger() or DDB guards for Debugger() and db_stack_trace_print().

Should allow to build these files without DDB enabled option.

branches: 1.40.6;
Trailing whitespace

MI PMAP hardware page table walker support.

This is based on code given to me by Matt Thomas a long time ago with
many updates and bugs fixes from me.

Rename pmap_segtab_t *stp to stb for consistency with a future
pmap_pdetab_t *ptb. pmap_pdetab_t *ptp would be far too confusing.

NFC. Same code before and after.

For booke and ibm4xx, switch to software-based single-stepping for PT_STEP
ptrace(2) command from broken hardware-based implementation.

As described in proposal on port-powerpc@,

http://mail-index.netbsd.org/port-powerpc/2021/02/26/msg003597.html

hardware debug facilities of booke and 4xx use critical interrupts, that
are difficult to handle for this purpose; they are not automatically masked
when entering kernel mode via system call trap or hardware interrupt.
See my proposal above for more details.

Now, hardware debug facilities are exclusively usable by kernel itself.
They are much more functional than PSL_SE MSR bit of oea, and should be
useful to, e.g., support byte-granular watchpoint for DDB in the future.

Sort headers. Also, use <ddb/ddb.h> instead of db_interface.h and
db_machdep.h in order not to be bothered by subtle include order.

No functional changes intended.

branches: 1.35.2;
Fix build with UVMHIST; stop passing string literal to UVMHIST_LOG(),
and also cast pointer arguments into uintptr_t.

For booke and ibm4xx, emulate m[ft]msr in user mode, in the same
manner as oea.

Now, user process can decide by itself whether floating-point
exception triggers SIGFPE or not via fenv(3).

Do not use curlwp twice. No functional changes.

For booke, fix signo and other siginfo returned for userland by
syncing with oea and ibm4xx.

Now, tests/kernel/t_trapsignal:bus_handle and friends pass on booke.

Do not clear pcb_onfault for error path of setfault().
This is caller's responsibility, and all the callers actually do so.

For booke, restore callee saved registers when recovery for page fault
fails for kernel.

OOPS! How on the earth we had overlooked this error so far...

Include missing opt_altivec.h for PPC_HAVE_SPE.

Style and cosmetic changes. No binary changes intended.

Fix more printf format strings for mfspr() (hi mrg).

Fix macro spelling.

Don't use numeric constants for SPR. Use the symbolic name (SPR_PIR).
Add DBSR_BRT to KASSERT

Replace mfpir with mfspr r, 286. The Power ISA and GAS disagree on the
semantics of this instruction, so prefer the well defined replacement.

branches: 1.23.2;
Get rid of MDLWP_USED{FPU,VEC}

branches: 1.22.2; 1.22.4;
Also supprese printing fatal traps if the process is being debugged.

Only print fatal trap info if the resulting signal would be uncaught.
(this avoid the messages from libcrypto when it probes for capabilities).

Add a machine splhist command to give (a incomplete) spl history.
(only the most recent are going to be accurate).

splraise(6) from 0 at 549214603
splraise(7) from 6 at 549214643 (+40)
splx(6) from 7 at 549214691 (+48)
splx(0) from 6 at 549214730 (+39)

Export dump_trapframe.

Add support for PPC FP emulation to BookE.
Pass a ksiginfo_t to fpu_emulation so it can give more detailed
info on signals.

More cleanup. Use a union (pmap_segtab) and a typedef (pmap_segtab_t). Add
more functionality from the mips pmap and try to make it more common to ease
the transition for mips in the future.

s/seg_tab/seg_ptr/

Allow user addresses >= 0x80000000

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

branches: 1.13.2; 1.13.6;
Modify *ASSERTMSG() so they are now used as variadic macros. The main goal
is to provide routines that do as KASSERT(9) says: append a message
to the panic format string when the assertion triggers, with optional
arguments.

Fix call sites to reflect the new definition.

Discussed on tech-kern@. See
http://mail-index.netbsd.org/tech-kern/2011/09/07/msg011427.html

Switch to use new common cpu_ast routine.

PowerPC now exports a common view of cpu.h, vmparam.h and pmap.h
when building a MODULAR kernel or compiling _MODULE.
It should be noted that MODULAR or _MODULE export a view of the kernel
as being MULTIPROCESSOR (even if isn't).
The shared pmap TLB uses mdpg in places where it used mdpg to avoid
deadly embrance inclusion problems.

Make startlwp and upcallret common instead of having 3 mostly identical copies.

If uvm_fault returns EACCES, convert it to EFAULT.

For debugging, use UVMHIST to create kernel histories pmaphist and
pmapexechist. This replaces the old pmapdebug/PDB stuff.
In ddb, you can just use kernhist_dump(pmaphist) to view the history
or vmstat -H from userland.

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: 1.6.2;
Move powerpc to use pcu to manage FPU/AltiVec/SPE.

branches: 1.5.2;
add begging of single step support. Since BookE doesn't support PSL_SE, if
userret find PSL_SE set in SRR1, it will call booke_sstep to setup the
debug registers.

If we get a PGM exception for a trap, use SIGTRAP/TRAP_BRKPT instead of
SIGILL/ILL_ILLTRP so GDB will recognize it.

Fix inverted test. cpu_setmcontext should return success. :)

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file trap.c was initially added on branch matt-nb5-pq3.

fix various typos in comments.

Make this assemble correctly with clang.

At the moment, clang wrongly handles m[ft]sprgN (N >= 4);
use m[ft]spr for SPR_SPRGN instead.

Now, clang-compiled kernel seems working just fine on my RB800!

Include required opt_*.h for sure.

Avoid race condition between PTE update and TLB miss walk.

branches: 1.11.2;
Typo

Use symbolic constant for SPR. Fix comment.

Replace mfpir with mfspr r, 286. The Power ISA and GAS disagree on the
semantics of this instruction, so prefer the well defined replacement.

branches: 1.8.2; 1.8.12;
Fix a problem where the kernel could randomly reset due to a watchdog event.
When an exception happens, the srr0 (exception PC) was being saved in the
normal location of the current callframe. This was fine except when the
routine was in its prologue after it had saved LR but had not yet updated the
stack pointer or when the routine was in its epilogue after it has restored
the stack pointer but not yet loaded the LR. In either case this would cause
the LR to be corrupted (either running the routine forever or by branching
to itself forever). Now we save and restore the contents of that memory
location so the corruption can't happen.

Add hook so E500 watchdog can use a separate stack but leave it disabled by
default.

branches: 1.6.2; 1.6.8;
Nuke the mfsprg2 %r3 after sctrapexit. curlwp is already in %r13 and the
value fetched to %r3 isn't used.

Use FRAME_Rn (like ibm4xx and oea) instead of FRAME_n.
Include psl.h to get PSL_* values instead of getting them from assym.h

Now that the generic fixup code exists, there's no to patch the interrupts
directly since the stub fixup will do that automatically. Just need to add
stubs for the interrupt vectors and they get fixed automagically.

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: 1.2.4; 1.2.6;
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: 1.1.2; 1.1.4;
file trap_subr.S was initially added on branch matt-nb5-pq3.

Merge thorpej-cfargs2.

branches: 1.7.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.6.4;
Style and cosmetic changes. No binary changes intended.

Move debug printfs higher.

branches: 1.4.2;
Fill in LE bus_space_tag in attach args.

Allow code to allow inclusive/exclusive locators for subdevices.
(uses on mpc85xx to match on SVRs or not match on SVRs).

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file cpunode.c was initially added on branch matt-nb5-pq3.

Style and cosmetic changes. No binary changes intended.

Add missing __KERNEL_RCSID

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file e500wdog.c was initially added on branch matt-nb5-pq3.

powerpc: Use config_detach_children to reduce error branch bugs.

Drop unused opt_flash.h.

Style and cosmetic changes. No binary changes intended.

Map NOR as PREFETCHABLE.

branches: 1.4.2;
nuke pq3cfi_addr() and just use ga_addr; obio already sorts out getting
address from chip select reg when cs locator is used.

branches: 1.3.2;
add TNF copyright

#include <sys/bus.h> not <machine/bus.h>.

Add support for CFI NOR, using MPC8536DS as initial example.
Only AMD/Fujitsu command set is suported so far.
This is still work in progress, be advised.

Style and cosmetic changes. No binary changes intended.

branches: 1.1.2;
Add simple driver to count single bit ECC errors.

Normalize how motoi2c controllers are attached.

Split the i2c controller into 2 separate instances. This aligns with
how the device is represented when using DeviceTree, and also allows us
to de-weirdify the shared motoi2c code.

XXX Because e500 interrupt code doesn't support shared interrupts, we
no longer establish one for the i2c controller, but this isn't a great
loss as motoi2c doesn't support using interrupts right now anyway.

Style and cosmetic changes. No binary changes intended.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.3.52; 1.3.54;
Add missing __KERNEL_RCSID

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file pq3diic.c was initially added on branch matt-nb5-pq3.

Merge thorpej-cfargs2.

branches: 1.7.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.6.4;
Style and cosmetic changes. No binary changes intended.

Clean up initialization of com_regs structure, in preparation for
some additional changers.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.3.52; 1.3.54;
Add missing __KERNEL_RCSID

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file pq3duart.c was initially added on branch matt-nb5-pq3.

Merge thorpej-cfargs2.

branches: 1.11.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.10.4;
Style and cosmetic changes. No binary changes intended.

Fix typo (s/contoller/controller/).

branches: 1.8.18;
Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix

Trailing whitespace

Fix up USBMODE registers in sc_vendor_init functions and not in the ehci
driver.

branches: 1.5.2; 1.5.14; 1.5.16; 1.5.20;
EHCI_USBINTR is 4 bytes long so use EOWRITE4

branches: 1.4.2;
Make sure to enable the USB interface.

branches: 1.3.2; 1.3.4;
Use LE bus space tag for EHCI register access.
Initialize SNOOP for all of RAM.
Use IPL_USB

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file pq3ehci.c was initially added on branch matt-nb5-pq3.

Fix few typos in comments:
s/aready/already/
s/aleady/already/
s/imcoming/incoming/

s/creat /create/ in few more comments and error log messages.

s/remaing/remaining/ s/containg/containing/, mainly in comments.

branches: 1.60.2;
if_stats(9): Add ifp argument to if_stat..._ref.

This will enable us to pass the ifp through to a dtrace probe inside.

No functional change intended in this change, but this is an API
change visible to modules so it shouldn't be pulled up.

PR kern/58377

fix spelling mistakes, mainly in comments and log messages.

Eliminate use of IFF_OACTIVE.

Obsolete mdio_lock for pq3mdio_mii_{read,write}reg().

Callers (mii(4) layer and atphy(4) driver) acquire mii_lock() for
this purpose.

Found by LOCKDEBUG.

Merge thorpej-cfargs2.

branches: 1.55.2;
if_attach and if_initialize cannot fail, don't test return value

These were originally made failable back in 2017 when if_initialize
allocated a softint in every interface for link state changes, so
that it could fail gracefully instead of panicking:

https://mail-index.NetBSD.org/source-changes/2017/10/23/msg089053.html

However, this spawned many seldom- or never-tested error branches,
which are risky to have around. And that softint in every interface
has since been replaced by a single global workqueue, because link
state changes require thread context but not low latency or high
throughput:

https://mail-index.NetBSD.org/source-changes/2020/02/06/msg113759.html

So there is no longer any reason for if_initialize to fail. (The
subroutine if_stats_init can't fail because percpu_alloc can't fail
either.)

There is a snag: the softint_establish in if_percpuq_create could
fail, potentially leading to bad consequences later on trying to use
the softint. This change doesn't introduce any new bugs because of
the snag -- if_percpuq_attach was already broken. However, the snag
can be better addressed without spawning error branches, either by
using a single softint or making softints less scarce.

(Separate commit will change the signatures of if_attach and
if_initialize to return void, scheduled to ride whatever is the next
convenient kernel bump.)

Patch and testing on amd64 and evbmips64-eb by maya@; commit message
soliloquy, and compile-testing on evbppc/i386/earmv7hf, by me.

branches: 1.54.2;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

Fix rnd(9) support; events were not sampled actually in the previous.

Remove #if-0'ed and wrap long line for clarity.

branches: 1.52.2;
Add rnd(9) support.

Switch to if_percpuq_enqueue() from if_input().

branches: 1.50.2;
Style and cosmetic changes. No binary changes intended.

Fix typo

Adopt <net/if_stats.h>.

branches: 1.47.2;
ether_input() automatically add input bytes to if_ibytes, so it's not
required to do in the driver who use ether_input().

branches: 1.46.2;
Don't automatically set ec_capenable's ETHERCAP_VLAN_HWTAGGING bit in
vlan_config() to make it user-controllable. Instead, set the bit in
xxx_attach().

Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.

No functional change:
- Simplify MII structure initialization and reference.
- u_int*_t -> uint*_t.
- KNF

No functional change:
- u_int_{8,16,32}_t -> uint_{8,16,32}_t
- KNF.
- Tabify.
- Remove extra space.

SIOCS is 'S'et function and the ioctl argument is ifreq.
SIOCG is 'G'et function and the ioctl armument is ifmediareq.
Before this change, SIOCG modify request unexpectedly but it doesn't cause a
real bug because the modification is overriden in ifmedia_ioctl().

s/ the the / the /

Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy

Replace M_ALIGN and MH_ALIGN by m_align.

Replace: M_MOVE_PKTHDR -> m_move_pkthdr. No functional change, since the
former is a macro to the latter.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

Rename

ip6_undefer_csum -> in6_undefer_cksum
in6_delayed_cksum -> in6_undefer_cksum_tcpudp

The two previous names were inconsistent and misleading.

Put the two functions into in6_offload.c. Add comments to explain what
we're doing.

Same as IPv4.

Rename

ip_undefer_csum -> in_undefer_cksum
in_delayed_cksum -> in_undefer_cksum_tcpudp

The two previous names were inconsistent and misleading.

Put the two functions into in_offload.c. Add comments to explain what
we're doing.

The same could be done for IPv6.

branches: 1.34.2;
Implement the BPF direction filter (BIOC[GS]DIRECTION). It provides backward
compatibility with BIOC[GS]SEESENT ioctl. The userland interface is the same
as FreeBSD.

This change also fixes a bug that the direction is misunderstand on some
environment by passing the direction to bpf_mtap*() instead of checking
m->m_pkthdr.rcvif.

Rename

M_CSUM_DATA_IPv6_HL -> M_CSUM_DATA_IPv6_IPHL
M_CSUM_DATA_IPv6_HL_SET -> M_CSUM_DATA_IPv6_SET

Reduces the diff against IPv4. Also, clarify the definitions.

branches: 1.32.2;
If error occured in pq3etsec_attach(), free resources and return.

only get vtag when we have vtag like the other drivers.

like if_bge.c:1.312 and if_stge.c:1.64.
fixed by s-yamaguchi@IIJ, thanks.

VLAN ID uses pkthdr instead of mtag now. Contributed by s-yamaguchi@IIJ.

I just commit by proxy. Reviewed by joerg@n.o and christos@n.o, thanks.
See http://mail-index.netbsd.org/tech-net/2017/09/26/msg006459.html

XXX need pullup to -8 branch

branches: 1.29.8;
Move bpf_mtap and if_ipackets++ on Rx of each driver to percpuq if_input

The benefits of the change are:
- We can reduce codes
- We can provide the same behavior between drivers
- Where/When if_ipackets is counted up
- Note that some drivers still update packet statistics in their own
way (periodical update)
- Moved bpf_mtap run in softint
- This makes it easy to MP-ify bpf

Proposed on tech-kern and tech-net

IFQ_PURGE() must be called only after call if_initialize().
it lock ifp->if_snd.ifq_lock.

branches: 1.27.2;
Introduce m_set_rcvif and m_reset_rcvif

The API is used to set (or reset) a received interface of a mbuf.
They are counterpart of m_get_rcvif, which will come in another
commit, hide internal of rcvif operation, and reduce the diff of
the upcoming change.

No functional change.

Introduce softint-based if_input

This change intends to run the whole network stack in softint context
(or normal LWP), not hardware interrupt context. Note that the work is
still incomplete by this change; to that end, we also have to softint-ify
if_link_state_change (and bpf) which can still run in hardware interrupt.

This change softint-ifies at ifp->if_input that is called from
each device driver (and ieee80211_input) to ensure Layer 2 runs
in softint (e.g., ether_input and bridge_input). To this end,
we provide a framework (called percpuq) that utlizes softint(9)
and percpu ifqueues. With this patch, rxintr of most drivers just
queues received packets and schedules a softint, and the softint
dequeues packets and does rest packet processing.

To minimize changes to each driver, percpuq is allocated in struct
ifnet for now and that is initialized by default (in if_attach).
We probably have to move percpuq to softc of each driver, but it's
future work. At this point, only wm(4) has percpuq in its softc
as a reference implementation.

Additional information including performance numbers can be found
in the thread at tech-kern@ and tech-net@:
http://mail-index.netbsd.org/tech-kern/2016/01/14/msg019997.html

Acknowledgment: riastradh@ greatly helped this work.
Thank you very much!

Added Interrupt coalescing support.

Avoid if_snd race condition when MP.

Fix various conditions with setting IMASK.

Added missing tx bpf_mtap().

Replace if_attach with if_initialize and if_register.

Use IFQ_* macro instead of IF_*.

Remove non-printable character.

Revert previous accidental commit.

Revert previous commit.

branches: 1.16.2; 1.16.16;
Split mdio/mii access into its own "device" and update accordingly.
(on the P1025 the mdio functionality is separate from the etsec functions).
Provide locking for mii access.

The ETSEC on the P1025 has been moved/split so the MDIO stayed in the same
place but each ETSEC has been split into two virtual halves (G0 and G1) and
each one has a new different base address.
For some reason, tsec1 connects to phy 2 and tsec2 connects to phy 1.
Adjust config file to match

Add support for the Freescale TWR-P1025 evaluation board and the P1025/P1016
QorIQ processors. XXX tsec isn't working yet on the TWR-P1025.

Preserve some MACCFG2 bits

Don't use the current value of maccfg2.

Read maccfg1/maccfg2/ecntrl so we can preserve bits we don't change (like
GMII mode).

Don't rely on being able to allocate while in a softintr. So preallocate
all the bus_dma maps in ifinit where we can sleep.

branches: 1.9.2; 1.9.6; 1.9.8;
Fix printing of phy.

Modify *ASSERTMSG() so they are now used as variadic macros. The main goal
is to provide routines that do as KASSERT(9) says: append a message
to the panic format string when the assertion triggers, with optional
arguments.

Fix call sites to reflect the new definition.

Discussed on tech-kern@. See
http://mail-index.netbsd.org/tech-kern/2011/09/07/msg011427.html

Add missing __KERNEL_RCSID

Add DEBUG around a variable.

struct device * -> device_t
struct cfdata * -> cfdata_t
split device/softc (CFATTACH_DECL_NEW)
use device_accessors and device_private
constify

Make sure initialize the ATTR registers.

branches: 1.3.2;
Fix various nits related to P2020 support.

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file pq3etsec.c was initially added on branch matt-nb5-pq3.

Fix few typos in comments.

Merge thorpej-cfargs2.

branches: 1.13.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.12.4;
Style and cosmetic changes. No binary changes intended.

Preliminary support for P1023.

Revert previous accidental commit.

Revert previous commit.

branches: 1.8.2; 1.8.16;
Add support for the Freescale TWR-P1025 evaluation board and the P1025/P1016
QorIQ processors. XXX tsec isn't working yet on the TWR-P1025.

Fix a few compile problems on non-P2020 platforms.

The P2020 doesn't have GPIO in the same place as othe 85xx. Deal with it.

Fix P2020 GPIO support (which has pins that are input/output instead of just
input or output).

branches: 1.4.2; 1.4.6; 1.4.8;
Fix RCSID

Fix various nits related to P2020 support.

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file pq3gpio.c was initially added on branch matt-nb5-pq3.

powerpc: Use config_detach_children to reduce error branch bugs.

Drop unused opt_flash.h.

Style and cosmetic changes. No binary changes intended.

#include <sys/bus.h> not <machine/bus.h>.

Unfinished (by far) NAND driver.

Merge thorpej-cfargs2.

branches: 1.6.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.5.4;
Style and cosmetic changes. No binary changes intended.

avoid variable-length array

Move obio softc definitions to a header so it can use by children of obio.

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file pq3obio.c was initially added on branch matt-nb5-pq3.

Enable DMA transfer.

branches: 1.5.2; 1.5.14; 1.5.16;
When using DMA, make sure to initialize SNOOPing.

Use the new 32-bit and ESDHC support in sdhc.c

branches: 1.3.2; 1.3.6; 1.3.8;
Use a private bus_space for freescale eSDHC controller (only allows
32 bit access).

branches: 1.2.4;
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: 1.1.2; 1.1.4;
file pq3sdhc.c was initially added on branch matt-nb5-pq3.

Stop using deprecated proplib functions.

Downgrade pq3pci_intrsources_lock and pq3pci_msigroups_lock from
spin to adaptive mutexes.

These locks are typically used during autoconf(9), not from
interrupt context.

Found by LOCKDEBUG.

XXX
I'm not sure whether these locks are really necessary...
Similar codes, e.g. in powerpc/pic/intr.c, do not use any locks.

fix few typos in comments.

Merge thorpej-cfargs2.

branches: 1.28.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.27.2;
pq3pci_msi_claim(): remove KASSERT that is valid when allocating MSI
vectors, while apparently invalid when freeing them.

Oops, forget to commit local change necessary to support nvme(4) on RB800;
provide pci_intr_setattr(9) (no-op).

branches: 1.25.2;
Overhaul the interface to pci_configure_bus():
- Don't expose how PCI bus configuration resource management is implemented.
Provide a new resource provider API:

==> pciconf_resource_init() -- Initialize a PCI configuration resources
container.
==> pciconf_resource_add() -- Add a PCI configuration resource to the
container (I/O, MEM, or prefetchable MEM). Multiple resources of
each type may be added.
==> pciconf_resource_fini() -- Tear down the PCI configurtation resources
container once the bus has been configured.

This is much easier to use than the previous method of providing an
extent map for each kind of resource, and works better for e.g. ACPI
platforms that provide potentially multiple PCI resources in tables
provided by firmware.

- Re-implement PCI configuration resource management using vmem arenas,
rather than extent maps.

Style and cosmetic changes. No binary changes intended.

remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

Added MSI/MSI-X and interrupt_distribute(9) support for powerpc.

branches: 1.21.2;
PCI Extended Configuration stuff written by nonaka@:
- Add PCI Extended Configuration Space support into x86.
- Check register offset of pci_conf_read() in MD part. It returns (pcireg_t)-1
if it isn't accessible.
- Decode Extended Capability in PCI Extended Configuration Space.
Currently the following extended capabilities are decoded:
- Advanced Error Reporting
- Virtual Channel
- Device Serial Number
- Power Budgeting
- Root Complex Link Declaration
- Root Complex Event Collector Association
- Access Control Services
- Alternative Routing-ID Interpretation
- Address Translation Services
- Single Root IO Virtualization
- Page Request
- TPH Requester
- Latency Tolerance Reporting
- Secondary PCI Express
- Process Address Space ID
- LN Requester
- L1 PM Substates
The following extended capabilities are not decoded yet:
- Root Complex Internal Link Control
- Multi-Function Virtual Channel
- RCRB Header
- Vendor Unique
- Configuration Access Correction
- Multiple Root IO Virtualization
- Multicast
- Resizable BAR
- Dynamic Power Allocation
- Protocol Multiplexing
- Downstream Port Containment
- Precision Time Management
- M-PCIe
- Function Reading Status Queueing
- Readiness Time Reporting
- Designated Vendor-Specific

Preliminary support for P1023.

Revert previous accidental commit.

Revert previous commit.

branches: 1.17.4;
pq3pci_config_addr_read is only used in a #if 0 block, so hide it under
the same condition.

branches: 1.16.2;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

branches: 1.15.2; 1.15.4;
Make this build again by adding a couple of right-parens.

Deal with PCIe/PCI hoses with more than one window so the bus_space
encompasses all of it and reserves those portions not assigned so
no one can allocate from them.

Add P1025 support to the PCI truth tables.
P1025 only has two PCIe ports, not 3.

converting extent(9) from malloc(9) to kmem(9)
preceding kmem-vmem-pool-uvm patch

releng@ acknowledged

branches: 1.11.2; 1.11.6;
Modify *ASSERTMSG() so they are now used as variadic macros. The main goal
is to provide routines that do as KASSERT(9) says: append a message
to the panic format string when the assertion triggers, with optional
arguments.

Fix call sites to reflect the new definition.

Discussed on tech-kern@. See
http://mail-index.netbsd.org/tech-kern/2011/09/07/msg011427.html

First pass of the new PCI MSI/MSI ABI definitions. (return EOPNOTSUPP for
now).

Redefine PCI_MSI_* and PCI_PCIE_* constants in terms of bits(3).

Use named constants and more conventional variable names in
pci_msi_establish() and pci_msi_disestablish(). Fix a couple of bugs:
pci_msi_establish() returned a pointer to the struct intrhand instead of
to the struct msi_hdl as it was intended to, and pci_msi_disestablish()
did not free(9) the msi_hdl.

Add support pci_intr_setattr.
Export non-inline version of pci api for modules (_MODULE is defined).
Fix definition of pc_conf_hook and pc_conf_interrupt.
Switch to using inlines instead of macros.
Switch ibm4xx to use <powerpc/pci_machdep.h>

When delivering MSIs, sometimes after clearing the MSI but before the interrupt
routine get called the MSI reasserts and we loop around and would detect a
spurious interrupt.

So now we keep track of the interrupts we have serviced successfully for this
dispatch loop. If we have to invoke an interrupt handler and that handler
indicates nothing was serviced, if we previously serviced it it isn't counter
as a spurious interrupt.

branches: 1.6.2;
PCI_FLAGS_IO_ENABLED and PCI_FLAGS_MEM_ENABLED changed their functional
role in NetBSD (drivers are no longer supposed to write these to
pa_flags) without changing name. Correct that.

Rename PCI_FLAGS_IO_ENABLED to PCI_FLAGS_IO_OKAY and
PCI_FLAGS_MEM_ENABLED to PCI_FLAGS_MEM_OKAY, thus making their names
consistent with the other PCI flags and poisoning 3rd-party driver
sources that use the flags in the old bad way.

This patch produces no binary changes in this set of PCI kernels when
they are compiled w/o 'options DIAGNOSTIC' and w/ -V MKREPRO=yes:

algor P4032 P5064 P6032
alpha GENERIC
amd64 GENERIC XEN3_DOM0
arc GENERIC
atari HADES MILAN-PCIIDE
bebox GENERIC
cats GENERIC
cobalt GENERIC
evbarm-el ADI_BRH ARMADILLO9 CP3100 GEMINI GEMINI_MASTER GEMINI_SLAVE
evbarm-el GUMSTIX HDL_G IMX31LITE INTEGRATOR IQ31244 IQ80310 IQ80321
evbarm-el IXDP425 IXM1200 KUROBOX_PRO
evbarm-el LUBBOCK MARVELL_NAS NAPPI NSLU2 SHEEVAPLUG SMDK2800 TEAMASA_NPWR
evbarm-el TEAMASA_NPWR_FC TS7200 TWINTAIL ZAO425
evbmips-el AP30 DBAU1500 DBAU1550 MALTA MERAKI MTX-1 OMSAL400 RB153 WGT624V3
evbmips64-el XLSATX
evbppc EV64260 MPC8536DS MPC8548CDS OPENBLOCKS200 OPENBLOCKS266
evbppc OPENBLOCKS266_OPT P2020RDB PMPPC RB800 WALNUT
hp700 GENERIC
i386 ALL XEN3_DOM0 XEN3_DOMU
ibmnws GENERIC
iyonix GENERIC
landisk GENERIC
macppc GENERIC
mvmeppc GENERIC
netwinder GENERIC
ofppc GENERIC
prep GENERIC
sandpoint GENERIC
sbmips-el GENERIC
sgimips GENERIC32_IP2x GENERIC32_IP3x
sparc GENERIC_SUN4U KRUPS
sparc64 GENERIC

Neither pci_dma64_available(), pci_probe_device(), pci_mapreg_map(9),
pci_find_rom(), pci_intr_map(9), pci_enumerate_bus(), nor the match
predicate passed to pciide_compat_intr_establish() should ever modify
their pci_attach_args argument, so make their pci_attach_args arguments
const and deal with the fallout throughout the kernel.

For the most part, these changes add a 'const' where there was no
'const' before, however, some drivers and MD code used to modify
pci_attach_args. Now those drivers either copy their pci_attach_args
and modify the copy, or refrain from modifying pci_attach_args:

Xen: according to Manuel Bouyer, writing to pci_attach_args in
pci_intr_map() was a leftover from Xen 2. Probably a bug. I
stopped writing it. I have not tested this change.

siside(4): sis_hostbr_match() needlessly wrote to pci_attach_args.
Probably a bug. I use a temporary variable. I have not tested this
change.

slide(4): sl82c105_chip_map() overwrote the caller's pci_attach_args.
Probably a bug. Use a local pci_attach_args. I have not tested
this change.

viaide(4): via_sata_chip_map() and via_sata_chip_map_new() overwrote the
caller's pci_attach_args. Probably a bug. Make a local copy of the
caller's pci_attach_args and modify the copy. I have not tested
this change.

While I'm here, make pci_mapreg_submap() static.

With these changes in place, I have tested the compilation of these
kernels:

alpha GENERIC
amd64 GENERIC XEN3_DOM0
arc GENERIC
atari HADES MILAN-PCIIDE
bebox GENERIC
cats GENERIC
cobalt GENERIC
evbarm-eb NSLU2
evbarm-el ADI_BRH ARMADILLO9 CP3100 GEMINI GEMINI_MASTER GEMINI_SLAVE GUMSTIX
HDL_G IMX31LITE INTEGRATOR IQ31244 IQ80310 IQ80321 IXDP425 IXM1200
KUROBOX_PRO LUBBOCK MARVELL_NAS NAPPI SHEEVAPLUG SMDK2800 TEAMASA_NPWR
TEAMASA_NPWR_FC TS7200 TWINTAIL ZAO425
evbmips-el AP30 DBAU1500 DBAU1550 MALTA MERAKI MTX-1 OMSAL400 RB153 WGT624V3
evbmips64-el XLSATX
evbppc EV64260 MPC8536DS MPC8548CDS OPENBLOCKS200 OPENBLOCKS266
OPENBLOCKS266_OPT P2020RDB PMPPC RB800 WALNUT
hp700 GENERIC
i386 ALL XEN3_DOM0 XEN3_DOMU
ibmnws GENERIC
macppc GENERIC
mvmeppc GENERIC
netwinder GENERIC
ofppc GENERIC
prep GENERIC
sandpoint GENERIC
sgimips GENERIC32_IP2x
sparc GENERIC_SUN4U KRUPS
sparc64 GENERIC

As of Sun Apr 3 15:26:26 CDT 2011, I could not compile these kernels
with or without my patches in place:

### evbmips-el GDIUM

nbmake: nbmake: don't know how to make /home/dyoung/pristine-nbsd/src/sys/arch/mips/mips/softintr.c. Stop

### evbarm-el MPCSA_GENERIC
src/sys/arch/evbarm/conf/MPCSA_GENERIC:318: ds1672rtc*: unknown device `ds1672rtc'

### ia64 GENERIC

/tmp/genassym.28085/assym.c: In function 'f111':
/tmp/genassym.28085/assym.c:67: error: invalid application of 'sizeof' to incomplete type 'struct pcb'
/tmp/genassym.28085/assym.c:76: error: dereferencing pointer to incomplete type

### sgimips GENERIC32_IP3x

crmfb.o: In function `crmfb_attach':
crmfb.c:(.text+0x2304): undefined reference to `ddc_read_edid'
crmfb.c:(.text+0x2304): relocation truncated to fit: R_MIPS_26 against `ddc_read_edid'
crmfb.c:(.text+0x234c): undefined reference to `edid_parse'
crmfb.c:(.text+0x234c): relocation truncated to fit: R_MIPS_26 against `edid_parse'
crmfb.c:(.text+0x2354): undefined reference to `edid_print'
crmfb.c:(.text+0x2354): relocation truncated to fit: R_MIPS_26 against `edid_print'

Fix various nits related to P2020 support.

branches: 1.3.2;
Add P2020/P2010 truth table definition.
Remove trailing whitespace.

branches: 1.2.2;
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: 1.1.2; 1.1.4;
file pq3pci.c was initially added on branch matt-nb5-pq3.