CVS log for src/sys/arch/sparc64/sparc64/clock.c

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Keyword substitution: kv
Default branch: MAIN

s/calibrarion/calibration/ in debug message and comments.

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

Merge changes from current as of 20200406

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.

Sync with HEAD

sun4v: initialize %stickcmpr properly when establishing interrupt - fixes issue seen on newer sun4v/SPARC-T5 system where the interrupt never fires.

update from HEAD

Sync with HEAD

KNF. Remove extra spaces. No functional change.

Sync with HEAD

Allocate interrupt handlers for clockintr and statintr dynamically.

Sync with HEAD (as of 26th Dec)

PR/50531: David Binderman: Add missing printf args

Rebase to HEAD as of a few days ago.

Rebase.

Use clockfreq() to print a system tick frequency.

The stick-frequency of Fire V100 is 5555555Hz and printing it as
5.555MHz instead of 5MHz is more precise.

sun4v: make cpu_initclocks() work on sun4v - %tick and %stick on sun4v systems are read-only. ok martin@

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

avoid divide by zero when setting 'hz' low.

Timecounter's tc_get_timecount requires only 32-bit (u_int), so
omit unnecessary upper 32-bit read from STICK counter.

Slightly rearange stopcounter() to compile warning-free with newer gcc

update comment about which CPU uses what counter/timer

sync with head

sprinkle #if NPSYCHO > 0
now this builds again on kernels without psycho

Make timecounter "tick-counter" mandatory.

support UltraSPARC-IIe STICK counter as time base

resync from head

- use gettick directly, not via cpu_counter.
- bump timecounter quality of stick-counter so we prefer to use it.

sync with (a bit old) head

Pull up following revision(s) (requested by macallan in ticket #695):
	sys/arch/sparc64/include/cpu.h: revision 1.99
	sys/arch/sparc64/sparc64/cpu.c: revision 1.103
	sys/arch/sparc64/include/psl.h: revision 1.50
	sys/arch/sparc64/sparc64/clock.c: revision 1.107
	sys/arch/sparc64/include/ctlreg.h: revision 1.57
	sys/arch/sparc64/sparc64/locore.s: revision 1.342
use system tick timer instead of %tick on UltraSPARC-III-ish CPUs
review & fixes by Takeshi Nakayama

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

use system tick timer instead of %tick on UltraSPARC-III-ish CPUs
review & fixes by Takeshi Nakayama

Preset ih_pil.

#include <sys/bus.h> instead of <machine/bus.h>.

Catchup with rmind-uvmplock merge.

sync with head

Sync with HEAD.

more CFATTACH_DECL_NEW fixes

sync with head

first steps towards fujitsu SPARC64 support:

- use INTVEC() for the interrupt number, avoids overflow in the (normally)
  11 bit interrupt number (from openbsd)

sync with head

Remove unnecessary headers.

sync with head.

Sync with HEAD.

various aprint_* fixes.

sync with head

- move definition of tick() from ctlreg.h to psl.h and rename to gettick()
  for consistency with other functions for reading/writing ASRs.
- move definition of tl() from trap.c to psl.h as same as above.
- define settick() in psl.h and use it in clock.c.
- cosmetic chages in psl.h.

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

Ansify function definitions w/o arguments. Generated with sed.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

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

sync with head

Sync with HEAD.

Explicitly pass a "mpsafe" arg down to intr_establish, as at that point
we do not have the original ipl passed in around to check for mpsafeness.
Fixes PR port-sparc64/38673. Thanks to Andrew for pointing at the problem.

sync with head.

sync with head.

Mirror sparc and provide sparc_softintr stuff. There is no functional
change, beyond renaming a function and putting back disestablish/schedule.
PR kern/37540.

Reduce use of curcpu() in tickintr_establish.

Reorganize clock assignments on SMP kernel:
- don't use separate statintr on primary CPU.
- invoke clockintr instead of statintr on secondary CPUs.

This change fixes the problem setitimer(2) didn't work on secodary CPUs.

Sync with HEAD.

sync with head.

sync with head.

sync with HEAD

Change statintr and schedintr similar to kern/kern_clock.c.

sync with head.

Make schedintr interrupt handler per-CPU.
While there rename tickintr interrupt handler and share initialization
code with schedintr.

Use macros to specify a interrupt level.

On SMP kernel,
- use "tick" interrupt for per-CPU statclock.
- disable "counter-timer" #1 interrupt and use it as timecounter.

- make interrupt pending list per-CPU.
- make tickintr() MP-safe.
- remove unused port-sparc derived interrupt code.

Ok by martin@.

sync with HEAD

sync with head.

Merge the ppcoea-renovation branch to HEAD.

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

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

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

Sync with head.

Sync with HEAD

Sync with HEAD.

Sync with HEAD.

Make cpufrequency and friends per cpu values.
Prepare a hz tick interrupt on secondary CPUs via %tick, but do not
enable it yet, as it breaks ddb.

Sync with HEAD.

sync with head.

Sync with HEAD.

Remove unused stuff

Sync with head.

Sync with head.

Update to HEAD.

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

from doc/BRANCHES:

	idle lwp, and some changes depending on it.

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

port yamt-idlelwp to sparc64.  this does not work yet, but others
have asked that i commit this work-in-progress.

currently it gets a double fault during a window save operation
and crashes to the prom.  (it seems very much like the problem
that i see on SMP sparc64, but there is no real evidence it is
the same root cause.)

sync with head.

sync with head.

Sync with head.

More cleanup of sparc64 clock stuff:
- split mkclock attachment from sparc64/clock.c into dev/mkclock.c
  (now clock.s only contains clock interrupt and timecounter stuff)
- rename match/attach functions of rtc at ebus to match the device name
- update some comments around clock devices in GENERIC

No objection on port-sparc64 for a month.

sync with head

Remove eeprom and clock at mainbus stuff.
They are available only on sun4 or sun4c.

Missing initializers

avoid bringing in mc146818 routines for kernels that do not have the
'rtc'-style clock linked in.  put the rtc code in it's own file and
only link it in if it is actually configured.  fixes PR#23342.

sync with head.

sync with head

Convert both sparc and sparc64 to MI todr.

sync with head.

sync with head.

Sync with head.

convert to timecounters (from branch simonb-timecounters)

adjust quality to 100 for interpolation capable counter implementations
0  would be used for interupt based counters

- support timecounters

Sync with head.

sync with head.

Use ANSI-style function definitions and declarations.

sync with head.

ANSIfication: u_intN_t -> uintN_t, use ANSI function declarations/definitions
instead of K&R ones.

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Rearange slightly to avoid the use of an unitialized variable in the
(unlikely) case that we do not have any hardware clock.

added initialization for tv in resettodr()

Deal with the fact that time is volatile and todr_*() are not. This needs
to be fixed properly.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Allow bigger time skips (root fs vs. rtc), only warn if we skip more
than two days backward (same as old behaviour) or more than two years
forward. I have lots of test machines I don't power on every two days.
XXX - this should be handled more consistent across the different
ports. While here, move the default time -- in the unlikely event that
we have neither rtc nor file system time -- to this millenium.

Rename PROM_getprop*() => prom_getprop*().

Print the host Id in mainbus_attach() instead of clock_attach().

Drop myetheraddr();

Uppercase CPU, plural is CPUs.

- Adapt to MI mk48txx(4) changes.
- Switch rtc (M5819) routines to use MI mc146818(4) driver.

Tested on Ultra5 (mkclock_ebus), but mkclock_sbus and rtc_ebus are not tested.

XXX This file should be split into each device and each bus attachment,
XXX and moved into sys/arch/sparc64/dev or sys/dev/sun.

Don't use NULL for an int comparsion.

Set CPU_UPAID when enabling timer interrupts.

Wrap diag message with #ifdef DIAGNOSTIC.

change PROM_getprop() from taking a "void **" for the storage, to a
"void *", and do the extra de-reference directly in the function.  this
avoids having to cast dozens of different types to "void **", which sets
of GCC3's strict-aliasing.  testing by martin@

add support for non-executable mappings (where the hardware allows this)
and make the stack and heap non-executable by default.  the changes
fall into two basic catagories:

 - pmap and trap-handler changes.  these are all MD:
   = alpha: we already track per-page execute permission with the (software)
	PG_EXEC bit, so just have the trap handler pay attention to it.
   = i386: use a new GDT segment for %cs for processes that have no
	executable mappings above a certain threshold (currently the
	bottom of the stack).  track per-page execute permission with
	the last unused PTE bit.
   = powerpc/ibm4xx: just use the hardware exec bit.
   = powerpc/oea: we already track per-page exec bits, but the hardware only
	implements non-exec mappings at the segment level.  so track the
	number of executable mappings in each segment and turn on the no-exec
	segment bit iff the count is 0.  adjust the trap handler to deal.
   = sparc (sun4m): fix our use of the hardware protection bits.
	fix the trap handler to recognize text faults.
   = sparc64: split the existing unified TSB into data and instruction TSBs,
	and only load TTEs into the appropriate TSB(s) for the permissions.
	fix the trap handler to check for execute permission.
   = not yet implemented: amd64, hppa, sh5

 - changes in all the emulations that put a signal trampoline on the stack.
   instead, we now put the trampoline into a uvm_aobj and map that into
   the process separately.

originally from openbsd, adapted for netbsd by me.

__KERNEL_RCSID()

Pull up revision 1.55 (requested by nakayama in ticket #1329):

Switch to use cycle counter (%tick) based microtime().

This is derived from alpha/microtime.c and i386/tsc_microtime.c,
and will share with both ports.

Make sure to include opt_foo.h if a defflag option FOO is used.

Avoid strict-alias warnings in gcc 3.3.

Remove a spurious Debugger() call.

Use PAGE_SIZE rather than NBPG.

Switch to use cycle counter (%tick) based microtime().

This is derived from alpha/microtime.c and i386/tsc_microtime.c,
and will share with both ports.

This should fix PR port-sparc64/18452.
(approved by martin)

Merge the nathanw_sa branch.

Pull up revision 1.50 (requested by martin in ticket #868):
  Fix the rtc clock on Netra X1 machines; fixes PR#15611
  and PR#16816.

Catch up to -current.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

catch up with -current.

Curproc->curlwp renaming.

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

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

catch up with -current on kqueue branch

Catch up to -current.

Fixes for the rtc clock on Netra X1 machines from PRs 15611 and 16816
by Takeshi Nakayama.

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

Overhaul bus space.

bus_space_handle_t now holds an address and two ASIs, one for normal accesses
and one for streaming accesses.  This allows to map individual handles
different ways, so some can use MMU bypass accesses and others use virtual
addresses.  bus_space_map() will now create handles that use bypass accesses
unles BUS_SPACE_MAP_LINEAR is passed in.  So only pass in BUS_SPACE_MAP_LINEAR
if you absolutely *need* to use bus_space_vaddr().  This removes at least one
extra level of indirection and should reduce TLB misses.

32-bit kernels have problems accessing 64-bit addresses, so they always use
virtual addresses.

Catch up with -current.

convert to using <dev/ebus/ebusvar.h> and it's struct member names.

bus_space_map2() has gone away.

Rename EBUS_PADDR_FROM_REG uses to EBUS_ADDR_FROM_REG.

Catch up to -current.

Allow MD code to provide functions for reading/writing NVRAM/RTC
locations. If passed NULL, the old behaviour using bus_space_{read,write}_1()
is used. Otherwise, all access to the chip goes via the MD functions.

This is necessary for mvmeppc boards where the mk48txx NVRAM/RTC is not
directly addressable.

Sync kqueue branch with -current.

file clock.c was added on branch nathanw_sa on 2002-02-28 04:12:13 +0000

use <dev/ebus/ebusreg.h>

Catch up with -current. Fix some bogons in the sparc64 kbd/ms
attach code. cd18xx conversion provided by mrg.

Fix rtc_write_reg().

Catch up with -current.

getprop* -> PROM_getprop*

update to -current

Support for pc-style `rtc' real-time clocks.
Doesn't work right.  There are still issues w/register accesses.

Don't fall over if the TOD clock could not be found.

Sync with HEAD.

In cpu_reboot(), only reset the TOD clock if the time is known to be good
enough, e.g. it has been initialized already by inittodr() or set
explicitly before by resettodr().  This prevents the TOD clock from going
way backwards when typing `halt' at the `mount root filesystem' prompt.

Sync with HEAD

Fix a 'defined but not used' error (GENERIC doesn't define DEBUG).

Separate schedclock from statclock on machines w/counter-timers.  This
lets us lower splsched().

clockattach(): print the hostid as a 32-bit value to avoid 64-bit sign extension.

Literal `%' in format string => `%%'

Sync with HEAD.

Make gcc happy about casts.

Warning police. Mostly useless format warnings. Switch Makefile for
kernel compiles to the warning flags that other ports also use.

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

Pullup 1.29 by patch [eeh]:
Add support for write protecting clock registers.

Make the improved %tick changes work with machines that use the counter-timer
for the clock.

(Hopefully) fix clock skew on machines that us %tick for the clock (UIIi).

Make sbus_wenable() and ebus_wenable() work on 32-bit kernels.

Add support for write protecting clock registers.

pull up 1.25 & 1.26 (approved by thorpej):
1.25:
>make myetheraddr() work even if the clock hasn't been setup yet
1.26
>Add an option to poll the ROM console from hardclock you can break into DDB
>even if callouts are disabled.

Use the mk48txx driver for time-of-day clock access.

Remove unused <sys/dev/ic/intersil7170.h>
Remove unused `extern struct idprom idprom'
Pull in <dev/clock_subr.h>

Add an option to poll the ROM console from hardclock you can break into DDB
even if callouts are disabled.

make myetheraddr() work even if the clock hasn't been setup yet

pullup the contents of -current arch/sparc64.  this gives us significant
ultrasparc PCI support (ultra5, ultra10, AXi, and E250 tested so far),
plus many other small fixes.  netbooting is now supported.

IF we're changing hz, change tick accordingly too.

Fixup counter-timer interrupt lossage.

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

With these changes the kernel seems almost stable again.

Get rid of vaddrs.h.

Sync w/ netbsd-1-5-base.

myetheraddr(): don't lose badly when the clock hasn't been attached yet.

Nuke dead code.

Fix doubled 'the the' in comment.

Pull up to last week's -current.

Sync with -current

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

Update from trunk.

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

Sync w/ -current.

fix compile warning.

Sync w/ -current.

Don't change protection on the clock for the moment.

Another general cleanup:

Remove the entire idea of fasttrap interrupts since V9 traps are really cheap,
the CPUs are really fast, and the completely different trap frames would make
these handlers really difficult to implement.

pmap_changeprot() was only used by the clock and one other place; deprecate it.

probeget() and probeset() now take 64-bit addresses even in 32-bit mode so we
can probe IO locations by physical addresses.

Some pmap cleanup.

Some more copyright cleanup.

clock attaches at ebus also now.

Add code to support using %tick as the system clock if no "counter-timer" node
is found.

fix some warnings, and some not DEBUG problems.

32-bit fixup.

It slices.  It dices.  It does everything except exec a sparc32_compat init.

#include <sys/dev/sbus/sbusvar.h>

Nuke temporary `getpropA()'.

Periodic update: now starts probing devices.

Some more 64-bit cleanup.  Now everything compiles.

Merge paddr_t changes into the main branch.

General pmap and debug cleanup.  Added PMAP_NEW support, but it doesn't work too well yet.

Cleanup work:

	Sync up with sys/dev/sbus
	get cgsix to work right

Split vm_offset_t and vm_size_t into paddr_t, psize_t, vaddr_t, and vsize_t.

Import of sparc64.

Initial revision