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History log of /src/sys/arch/atari/include/cpu.h
RevisionDateAuthorComments
 1.77  20-Jan-2024  thorpej Largely unify the <machine/cpu.h> headers on the m68k platforms.
 1.76  18-Jan-2024  thorpej Make the M68K_MMU_* defines real kernel options, available in opt_m68k_arch.h.
For 68030, 68040, and 68060, infer M68K_MMU_MOTOROLA. For 68010 and 68020, it
must be an explicit option (set in std.${MACHINE} or, in the case of hp300,
inferred from the specific model option).
 1.75  09-Jan-2024  thorpej Remove duplicated / slightly-tweaked loadustp() (load user segment table)
routines from all of the m68k ports using the shared pmap. Instead, in
pmap_init(), set up a function pointer to the appropriate mmu_load_urp*()
function in mmu_subr.s.
 1.74  06-Jan-2023  tsutsui TAB/spaces/indents cleanup.
 1.73  23-Nov-2019  ad 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().
 1.72  18-Feb-2019  thorpej Refactor the 68040 writeback() from each m68k port's trap handler into a
shared copy: m68040_writeback(). It is essentially a copy of the Atari
version, with some minor cosmetic tweaks and one small performance optimization
from the mvme68k port.

Tested by rjs@ on a Quadra 950. (Thanks!)
 1.71  22-Aug-2018  msaitoh - Cleanup for dynamic sysctl:
- Remove unused *_NAMES macros for sysctl.
- Remove unused *_MAXID for sysctls.
- Move CTL_MACHDEP sysctl definitions for m68k into m68k/include/cpu.h and
use them on all m68k machines.
 1.70  19-Oct-2013  christos branches: 1.70.28; 1.70.30;
make cpu_need_resched() macros consistent; __USE flags
 1.69  02-Feb-2012  tsutsui branches: 1.69.6; 1.69.10;
Always include <m68k/cpu.h> (i.e. outside #if defined(_KERNEL))
for crash(8) as amiga and sun3. There are _KERNEL protections in it.

Briefly tested by "build.sh -m news68k -U build".
Further possible botch will be fixed later.
 1.68  15-Nov-2011  tsutsui branches: 1.68.4;
Merge copy-and-pasted fpu_probe() function (to share it among more m68k ports).
Tested on TT030, Sun3/80, and X68030.
 1.67  16-May-2011  tsutsui branches: 1.67.4;
- merge and move pasted m68k MD setreg() functions into m68k/m68k_machdep.c
- move m68881_save() and m68881_restore() declarations into <m68k/m68k.h>

Briefly tested and no obvious breakage on atari, sun3, and x68k.
 1.66  08-Feb-2011  rmind Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.
 1.65  22-Dec-2010  matt branches: 1.65.2; 1.65.4;
Collect cpu_info and friends and move to m68k/include/cpu.h
Add a define __HAVE_CPU_DATA_FIRST which means that cpu_data is the first
member in struct cpu_info.
 1.64  23-Nov-2009  rmind branches: 1.64.4;
Use lwp_getpcb() on m68k ports, clean from struct user usage.
 1.63  21-Oct-2009  rmind Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.
 1.62  05-Mar-2009  tsutsui Remove __P().
 1.61  27-Feb-2008  xtraeme branches: 1.61.4; 1.61.12; 1.61.18;
Remove CTL_MACHDEP_NAMES, it's not used anywhere.

Ok by martin@.
 1.60  08-Jan-2008  joerg branches: 1.60.2; 1.60.6;
Convert Atari to generic TODR and timecounter.
 1.59  17-Oct-2007  garbled branches: 1.59.2; 1.59.8;
Merge the ppcoea-renovation branch to HEAD.

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

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

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.
 1.58  04-Aug-2007  ad branches: 1.58.2;
Add ci_cpuid where it's missing.
 1.57  21-May-2007  tsutsui branches: 1.57.2; 1.57.4; 1.57.8;
Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.
 1.56  21-May-2007  tsutsui Remove obsolete decralations of switch_exit() and switch_lwp_ext().
 1.55  20-May-2007  mhitch Add missing call to lwp_startup() in lwp_trampoline() (which was renamed
from proc_trampoline to match the other ports).

A DIAGNOSTIC kernel will now boot and run. LOCKDEBUG still doesn't work yet.
Also, my amiga no longer loses time.
 1.54  20-May-2007  isaki indent fix.
 1.53  18-May-2007  he Adapt to the merge of the yamt-idlelwp branch.
curcpu()->ci_want_resched is now required, so get rid of the
want_resched global. Also, cpu_need_resched() now takes two arguments.
The l_next and l_back fields in struct lwp no longer exists, so delete
references to it from genassym.cf.
Also, m68k/m68k/proc_subr.s is no longer used, says mhitch, so remove its use.

This brings the atari BOOT kernel back to a buildable state.
 1.52  21-Mar-2007  tsutsui branches: 1.52.4;
Apply MI softintr(9) patch before it becomes rotten. Untested.
See also:
http://mail-index.netbsd.org/port-atari/2007/03/07/0000.html
 1.51  04-Mar-2007  christos branches: 1.51.2; 1.51.4; 1.51.6;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.50  16-Feb-2007  ad branches: 1.50.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.49  09-Feb-2007  ad Merge newlock2 to head.
 1.48  22-Dec-2006  jdc We don't need the cpu_startup() prototype here. It is already provided by
sys/systm.h. Pointed out by skrll@.
 1.47  11-Dec-2005  christos branches: 1.47.20;
merge ktrace-lwp.
 1.46  04-Jun-2005  he branches: 1.46.2;
Adapt to compiling with -Wshadow and -Wcast-qual, by adding const
qualification in places and renaming a few local variables.
Also adds a couple uses of __UNVOLATILE() to allow passing volatile
variables to functions wanting e.g. caddr_t.
 1.45  26-Sep-2004  yamt don't expose cpu_info to userland.
 1.44  22-Sep-2004  yamt move some per-cpu data definitions to MI place so that they can be modified
without touching all ports. discussed on tech-kern@.
 1.43  04-Jan-2004  jdolecek Rearrange process exit path to avoid need to free resources from different
process context ('reaper').

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

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

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

g/c now unneeded routines and variables, including the reaper kernel thread
 1.42  07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.41  10-May-2003  thorpej branches: 1.41.2;
Remove redundant bounds_check_with_label() prototype.
 1.40  17-Jan-2003  thorpej Merge the nathanw_sa branch.
 1.39  20-Oct-2002  chs merge the 12 copies of vm_machdep.c on the m68k platforms.
clean up some other stuff along the way, including:
- use m68k/cacheops.*, remove duplicates from cpu.h.
- centralize a few declarations in (all the copies of) cpu.h.
- define M68K_VAC on platforms which have a VAC.
- switch the sun platforms to the (now common) proc_trampoline().
- do the phys_map thang on the sun platforms too, no reason not to.
 1.38  08-Sep-2001  thomas branches: 1.38.4;
ELF adaption, clockframe must be packed.
 1.37  30-May-2001  mrg branches: 1.37.2; 1.37.4;
use _KERNEL_OPT
 1.36  07-Jan-2001  leo branches: 1.36.2;
Add the Milan as a possible machine type.
 1.35  19-Dec-2000  scw Unification of the m68k syscall() function.
 1.34  25-Aug-2000  thorpej Make need_resched() take a "struct cpu_info *" argument. This
causes gives a primitive form of processor affinity. Its use in
roundrobin() still needs some work.
 1.33  26-May-2000  thorpej First sweep at scheduler state cleanup. Collect MI scheduler
state into global and per-CPU scheduler state:

- Global state: sched_qs (run queues), sched_whichqs (bitmap
of non-empty run queues), sched_slpque (sleep queues).
NOTE: These may collectively move into a struct schedstate
at some point in the future.

- Per-CPU state, struct schedstate_percpu: spc_runtime
(time process on this CPU started running), spc_flags
(replaces struct proc's p_schedflags), and
spc_curpriority (usrpri of processes on this CPU).

- Every platform must now supply a struct cpu_info and
a curcpu() macro. Simplify existing cpu_info declarations
where appropriate.

- All references to per-CPU scheduler state now made through
curcpu(). NOTE: this will likely be adjusted in the future
after further changes to struct proc are made.

Tested on i386 and Alpha. Changes are mostly mechanical, but apologies
in advance if it doesn't compile on a particular platform.
 1.32  10-Aug-1999  thorpej branches: 1.32.2;
Define cpu_number() as discussed on tech-smp.
 1.31  26-Feb-1999  is synchronize types, and s/curproc/p/ in one forgotten place
 1.30  25-Feb-1999  is mac68k part of pr 6152 fix, and missing bits for the others
 1.29  11-Nov-1998  thorpej Changes to support fork_kthread():
- cpu_set_kpc() now takes void *arg third argument, passed to the
entry point.
- cpu_fork() allows parent to be non-curproc iff parent is proc0.
When forking non-curproc, assume its state has already been saved.
- Adjust various pieces of machine-dependent code to account of all of this.
 1.28  07-Oct-1998  thorpej Oops, back out a buglet I didn't intend to commit in the last change.
 1.27  06-Oct-1998  thorpej configure() prototype is in <sys/device.h>
 1.26  05-Oct-1998  thorpej cpu_set_kpc() prototype is already in <sys/systm.h>.
 1.25  02-Sep-1998  leo Get rid of vm_offset_t/vm_size_t
 1.24  19-Feb-1998  leo Update Hades PCI support:
- Initialize the PCI bus and hand-out mem and i/o addresses. (there is
still lots of room for improvements here...)
- Implement the interupt functions
 1.23  26-Oct-1997  is Make these compile after m68k/m68k.h 1.4->1.5.
 1.22  02-Jun-1997  leo More stuff for handling an 68060.
 1.21  09-Apr-1997  thorpej regdump() is prototyped in <m68k/cpu.h> now
 1.20  04-Feb-1997  perry Nuke some options GENERIC residue.
 1.19  21-Jan-1997  leo Add a 'size' argument to badbaddr(). This is very useful on busses that
only accept certain size accesses on a specific address range. Like the
VME bus.
 1.18  03-Jan-1997  leo branches: 1.18.2;
Get rid of 'cpu040' variable. Use 'mmutype' or 'cputype' for testing
instead.
 1.17  18-Dec-1996  leo Tweak the clockframe structure a bit so we are able to save a few cycles
at interrupt time. (From Gordon Ross).
 1.16  25-Oct-1996  leo Nuke declaration of susword(). It's declared in systm.h now.
 1.15  25-Sep-1996  leo Catchup with -current:
- Extra argument to boot()
- select -> poll
 1.14  11-Sep-1996  thorpej Use <m68k/cpu.h>.
 1.13  10-Sep-1996  leo Add suline/susword prototypes for new trap.c
 1.12  23-Aug-1996  leo - Make the Hades a valid machine type
- Add some 68040 specific prototypes.
 1.11  18-Apr-1996  leo Yet more prototyping and -Wall fixes.
 1.10  19-Jan-1996  leo - Remove FPU defines, the FPU-type is no longer determined by the loader.
- Add some forgotten CPU-types (Waldi Ravens).
 1.9  21-Dec-1995  mycroft Remove deprecated cpu_setstack().
 1.8  28-Jun-1995  cgd remove unused cpu_exec() definitions. moved "broken swap" markers, for
ports that still need it, to types.h.
 1.7  28-May-1995  leo Add CLKBROKEN define, so GEM version that are 2 years off on the RTC can
be identified.
 1.6  14-May-1995  leo - Remove double mapping of stack
- Change to new coredump format
 1.5  05-May-1995  cgd define BROKEN_SWAP and/or cpu_swapout as appropriate.
 1.4  30-Apr-1995  leo - Move softint definitions to mtpr.h
- Add flags for TT/Falcon model for machineid, we definitely need them
 1.3  22-Apr-1995  christos - added sunos_machdep.c for sun3, atari, amiga and mac68k.
- changed machdep.c and trap.c to use struct emul.
- remove ep_setup references.
- added struct emul to all emulations.
 1.2  30-Mar-1995  leo KERNEL -> _KERNEL
 1.1  26-Mar-1995  leo branches: 1.1.1;
Initial revision
 1.1.1.1  26-Mar-1995  leo NetBSD/Atari, port by Leo Weppelman.
 1.18.2.1  30-Jan-1997  thorpej update from trunk
 1.32.2.3  18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.32.2.2  05-Jan-2001  bouyer Sync with HEAD
 1.32.2.1  20-Nov-2000  bouyer 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.
 1.36.2.1  21-Jun-2001  nathanw Catch up to -current.
 1.37.4.1  01-Oct-2001  fvdl Catch up with -current.
 1.37.2.1  13-Sep-2001  thorpej Update the kqueue branch to HEAD.
 1.38.4.5  03-Dec-2002  gmcgarry Use cpu_proc_fork().
 1.38.4.4  11-Nov-2002  nathanw Catch up to -current
 1.38.4.3  08-Dec-2001  thorpej Add a cpu_proc_fork(), called from uvm_proc_fork(), which takes care
of machine-dependent handling a fork() time (this is different from
forking the actual context in an LWP world). #define it away on
platforms which do not need it.

Problem noted by Gregory McGarry.
 1.38.4.2  17-Nov-2001  scw MD Scheduler Activation bits for Atari.
Compile-tested only.
 1.38.4.1  08-Sep-2001  scw file cpu.h was added on branch nathanw_sa on 2001-11-17 23:18:08 +0000
 1.41.2.6  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.41.2.5  19-Oct-2004  skrll Sync with HEAD
 1.41.2.4  24-Sep-2004  skrll Sync with HEAD.
 1.41.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.41.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.41.2.1  03-Aug-2004  skrll Sync with HEAD
 1.46.2.5  17-Mar-2008  yamt sync with head.
 1.46.2.4  21-Jan-2008  yamt sync with head
 1.46.2.3  03-Sep-2007  yamt sync with head.
 1.46.2.2  26-Feb-2007  yamt sync with head.
 1.46.2.1  30-Dec-2006  yamt sync with head.
 1.47.20.2  06-Feb-2007  ad Update m68k pasteware.
 1.47.20.1  12-Jan-2007  ad Sync with head.
 1.50.2.2  24-Mar-2007  yamt sync with head.
 1.50.2.1  12-Mar-2007  rmind Sync with HEAD.
 1.51.6.1  29-Mar-2007  reinoud Pullup to -current
 1.51.4.1  11-Jul-2007  mjf Sync with head.
 1.51.2.3  20-Aug-2007  ad Sync with HEAD.
 1.51.2.2  27-May-2007  ad Sync with head.
 1.51.2.1  10-Apr-2007  ad Sync with head.
 1.52.4.2  03-Oct-2007  garbled Sync with HEAD
 1.52.4.1  22-May-2007  matt Update to HEAD.
 1.57.8.1  04-Aug-2007  jmcneill Sync with HEAD.
 1.57.4.1  15-Aug-2007  skrll Sync with HEAD.
 1.57.2.1  07-Aug-2007  matt Sync with HEAD.
 1.58.2.2  23-Mar-2008  matt sync with HEAD
 1.58.2.1  06-Nov-2007  matt sync with HEAD
 1.59.8.1  08-Jan-2008  bouyer Sync with HEAD
 1.59.2.1  18-Feb-2008  mjf Sync with HEAD.
 1.60.6.1  03-Apr-2008  mjf Sync with HEAD.
 1.60.2.1  24-Mar-2008  keiichi sync with head.
 1.61.18.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.61.12.1  28-Apr-2009  skrll Sync with HEAD.
 1.61.4.2  11-Mar-2010  yamt sync with head
 1.61.4.1  04-May-2009  yamt sync with head.
 1.64.4.2  31-May-2011  rmind sync with head
 1.64.4.1  05-Mar-2011  rmind sync with head
 1.65.4.1  17-Feb-2011  bouyer Sync with HEAD
 1.65.2.1  06-Jun-2011  jruoho Sync with HEAD.
 1.67.4.2  22-May-2014  yamt 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")
 1.67.4.1  17-Apr-2012  yamt sync with head
 1.68.4.1  18-Feb-2012  mrg merge to -current.
 1.69.10.1  18-May-2014  rmind sync with head
 1.69.6.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.70.30.2  08-Apr-2020  martin Merge changes from current as of 20200406
 1.70.30.1  10-Jun-2019  christos Sync with HEAD
 1.70.28.1  06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)

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