Commit Graph

1081 Commits

Author SHA1 Message Date
scottr 2f2b4dae56 Optimize some cycles out of the clock interrupt handler when
USE_LEDS is defined.
1998-03-21 08:05:37 +00:00
scottr 727b8bc7ac Charles Hannum pointed out that if a clock interrupt was posted while
we were in ledcontrol(), the heartbeat twinkler would just punt on
updating the LED even though it had already updated the status.  (This
was broken in v1.73 of locore.s).

Rather than resurrect the old code, simplify ledcontrol() and don't
bother with mutual exclusion.  As mentioned by the comments describing
this function, we really don't need to be that precise.  We do, however,
want to guarantee instructions that modify the status variable directly,
so the function is now primarily inline assembly.
1998-03-21 07:45:59 +00:00
bouyer 9f50fca1fd Add commented out "options FFS_EI" 1998-03-18 16:34:41 +00:00
cgd 7ff7b02fac allow LDSTATIC definition to be overridden by bsd.own.mk/mk.conf 1998-03-02 20:01:05 +00:00
thorpej 5ec2d93c1e Fix a typo. 1998-02-27 19:13:04 +00:00
perry 1ed8ea9966 note second parm of sysarch() is now void *, + trivial KNF, etc. 1998-02-25 21:41:55 +00:00
thorpej 89d112dd92 Switch this kernel to UVM. 1998-02-24 11:05:37 +00:00
thorpej 7027d87a18 Duh! Use uvm_km_valloc_wait(), NOT uvm_km_zalloc() to allocate user page
tables.  (Thanks for pointing that out, Chuck!)
1998-02-24 07:42:05 +00:00
thorpej 772da350d4 Disable the message buffer during crash dumps by clearing msgbufenabled,
not msgbufmapped.
1998-02-19 04:18:30 +00:00
cgd 3bbb7f7d45 Move pmap_map() function definition to MD headers, as appropriate. It's
an internal function, and the VM system shouldn't try to prototype it.
(Note that some ports _don't_ prototype it.)
1998-02-18 02:05:32 +00:00
thorpej 8354e68508 Remove "class" declarations, and add "devclass" declarations where
appropriate.  Fix several inconsistencies between device class and
attributes.  Mostly from Chris Demetriou.
1998-02-16 22:12:45 +00:00
thorpej 65e20aa9a8 Add first-cut support for UVM. NOTE! User page table allocation does not
currently work with UVM in this pmap!  This is due to a bug in the interaction
between kernel_object and submaps which will be addressed shortly.
1998-02-16 21:01:39 +00:00
thorpej d8f3ddff17 Add support for UVM. 1998-02-16 20:54:51 +00:00
scottr f49dd3ef30 Avoid declaring the "astpending" and "want_resched" globals in cpu.h,
as this breaks C++ code that happens to indirectly include this header.
Both Matthias Scheler and I noticed this, independently.

This problem notably does not affect the atari and sun3/sun3x ports,
which have already implemented a similar solution.
1998-02-13 07:41:45 +00:00
thorpej 223caea788 pmap_page_index() is not used in the MACHINE_NEW_NONCONTIG case. 1998-02-08 18:47:06 +00:00
thorpej 2f55a48f5c Implement MACHINE_NEW_NONCONTIG and switch the hp300 port to use it. 1998-02-08 18:37:55 +00:00
mycroft b5c132e4d2 Prototype __flt_rounds() consistently. 1998-02-03 01:26:20 +00:00
is b3fa451227 Amiga uses the common m68k/sig_machdep.c now. Also moved its definition from
the other 68k ports' files.${port} to arch/m68k/conf/files.m68k.
1998-02-01 21:23:24 +00:00
ross 3a83745247 In some hp300-derived pmaps, in pmap_page_protect(), don't walk off the
end of the list of physical->virtual entires into NULL space if the last
entry is (mysteriously) wired in the pmap. Add a DEBUG printf on alpha.
1998-01-31 01:32:55 +00:00
mycroft 15ae963bea When dumping, print out the device number as major,minor. 1998-01-24 16:46:23 +00:00
thorpej 871cf5e7ce Update for changes to config. 1998-01-12 18:30:41 +00:00
thorpej 1ac3d5db35 Put SPU options in opt_spuconf.h, add device classes. 1998-01-12 18:29:48 +00:00
thorpej 1ef77e68aa Oops, fix a printf format. 1998-01-11 23:16:04 +00:00
thorpej f522bda243 Convert the hp300 LANCE driver to use bus.h 1998-01-11 21:57:02 +00:00
thorpej 5021043b13 ia->ia_addr is of type `bus_addr_t'. 1998-01-11 21:56:13 +00:00
thorpej 582d47fcf0 ia->ia_addr is a physical address, not a kernel virtual address. 1998-01-11 21:55:08 +00:00
thorpej 1687835b3e Pass down bus space tags to children, and use types appropriate for
bus.h.
1998-01-11 21:53:04 +00:00
thorpej 774d66001e Add bus_space.c 1998-01-11 21:42:44 +00:00
thorpej 77706becd7 Initial implementation of bus_space functions for hp300. Some cleanup
of this will be possible once some pmap changes are made.
1998-01-11 21:40:52 +00:00
thorpej b69358e4ca bus.h for the hp300 port. Only supports bus_space for now. 1998-01-11 21:26:04 +00:00
perry 6f57e5c573 multiple include protect machine/limits.h, fixes pr 4473 (from Mika Nystrom) 1998-01-09 22:23:44 +00:00
thorpej 4deb927ee6 Regen. 1998-01-09 06:59:27 +00:00
thorpej 2f3e61a54a Put RCS IDs into generated files, in the correct place. 1998-01-09 06:59:10 +00:00
thorpej c4a3ed1697 Regen: Back out RCS ID related changes. 1998-01-08 01:02:05 +00:00
thorpej ddb3a0e478 Back out RCS ID related changes. 1998-01-08 01:01:27 +00:00
thorpej 6ac24f05df Garbage-collect VM_PMAP. 1998-01-06 08:46:11 +00:00
thorpej 2317f9064e Garbage-collect pm_stchanged. 1998-01-06 08:40:50 +00:00
thorpej 07f835de1f Garbage-collect PMAP_ACTIVATE() call here; it's no longer necessary. 1998-01-06 07:49:36 +00:00
thorpej 61567b54de Garbage-collect pm_stchanged; it's not used by anything. 1998-01-06 07:02:58 +00:00
thorpej d11b109f2b Garbage-collect use of the PCB's copy of the user segment table pointer. 1998-01-06 06:51:40 +00:00
thorpej a8f80ad4fd Fix a bogosity apparently inherited from when the Utah 4.3BSD code base
was converted to use Mach VM for Net2/4.4BSD.  The user segment table
pointer was originally stored in the PCB.  When Mach VM came along,
however, it was also stored in the pmap, and loaded into the PCB in
pmap_activate().  pmap_activate() would then note that the PCB's USTP
was now in sync with the pmap's USTP, and the low-level context switch
code would use the value from the PCB.

However, pmap_activate() would also load the hardware MMU context if
the pmap was the current pmap (or, in the case where pmaps can be shared,
such as in NetBSD, if the proc was the current proc).  The low-level
context switch code would then reload the hardware _again_ using the
USTP from the PCB.

However, the optimization of not calling pmap_activate() if "stchanged"
was false ended up causing some processes to use stale USTP values from
the PCB when the low-level context switch code reloaded the hardware!
This was noticed by using a real vfork(2) (which worked for some time
before failing, surprisingly!)

Since I'm hard pressed to find any real optimization here (since the
hardware was always reloaded once, sometimes twice!), the code now always
calls pmap_activate(), which uses the correct USTP value (the one in the
pmap).  The PCB's USTP is now ignored, and should eventually be g/c'd.

Another optimization can actually be performed, and I have added a comment
describing what it is, but have not yet implemented it.

Also note that most of the loadustp() functions where actually incomplete.
This has been corrected.  These functions should probably be split up into
MMU-specific operations, and called indirectly, rather than doing constant
run-time decision making based on values that will never change during the
course of a boot's lifetime.
1998-01-05 23:16:21 +00:00
perry 086015d681 RCSID Police. 1998-01-05 21:13:51 +00:00
perry e464358f5f make script insert RCS ids into generated files 1998-01-05 21:12:34 +00:00
perry 3e0fad1868 RCSID Police. 1998-01-05 06:28:44 +00:00
thorpej b9f1b716f3 Now that all ports have pmap_activate(), and it has an identical interface,
prototype it in <vm/pmap.h>
1998-01-03 01:12:59 +00:00
thorpej dd966fca05 Change an argument name to PMAP_ACTIVATE() to more accurately describe the
semantics of the argument.
1998-01-01 20:05:23 +00:00
thorpej 9c20093835 Make pmap_activate() and pmap_deactivate() take a struct proc *. 1997-12-31 10:12:55 +00:00
scottr fa1347ed5b Prompt for total sectors, and calculate sane defaults for sectors per
cylinder and total sectors.
1997-12-29 07:15:10 +00:00
scottr 89b10b928f Do better reporting of transmit errors. 1997-12-26 22:37:05 +00:00
thorpej ff7a4d0472 Add COMPAT_13. 1997-12-22 05:31:23 +00:00