Commit Graph

1723 Commits

Author SHA1 Message Date
gallatin
f8c48b0904 Introduce a boot environment variable (clock_compat_osf1) which can
be set to 1 to make FreeBSD and Tru64 coexist peacefully on a dual
boot system and not clobber each other's year in the TOY clock.
(Tru64 uses an offset 52 years higher than one would expect)

Obtained from: NetBSD
MFC After: 1 week
2001-11-03 17:22:50 +00:00
phk
ea642e6058 Remove unneeded and #if 0'ed code to register in cdevsw[] 2001-11-03 17:05:12 +00:00
dillon
206c5d779e Implement i386/i386/pmap.c 1.292 for alpha, ia64 (avoid free
page exhaustion / kernel panic for certain madvise() scenarios)
2001-11-03 01:08:55 +00:00
mike
3df91ed4db o Add new header <sys/stdint.h>.
o Make <stdint.h> a symbolic link to <sys/stdint.h>.
o Move most of <sys/inttypes.h> into <sys/stdint.h>, as per C99.
o Remove <sys/inttypes.h>.
o Adjust includes in sys/types.h and boot/efi/include/ia64/efibind.h
  to reflect new location of integer types in <sys/stdint.h>.
o Remove previously symbolicly linked <inttypes.h>, instead create a
  new file.
o Add MD headers <machine/_inttypes.h> from NetBSD.
o Include <sys/stdint.h> in <inttypes.h>, as required by C99; and
  include <machine/_inttypes.h> in <inttypes.h>, to fill in the
  remaining requirements for <inttypes.h>.
o Add additional integer types in <machine/ansi.h> and
  <machine/limits.h> which are included via <sys/stdint.h>.

Partially obtain from:	NetBSD
Tested on:		alpha, i386
Discussed on:		freebsd-standards@bostonradio.org
Reviewed by:		bde, fenner, obrien, wollman
2001-11-02 18:05:43 +00:00
mike
3143414cff Rather than just change the arguments to suser() change the function to
suser_xxx() as well.

Pointy hat to:	rwatson
2001-11-02 17:42:03 +00:00
peter
81577a9eef "Fix" a problem that got copied from alpha to ia64 and broke there.
When we truncate the msgbuf size because the last chunk is too small,
correctly terminate the phys_avail[] array - the VM system tests
the *end* for zero, not the start.  This leads the VM startup to
attempt to recreate a duplicate set of pages for all physical memory.

XXX the msgbuf handling is suspiciously different on i386 vs
alpha/ia64...
2001-11-02 00:41:00 +00:00
rwatson
49a9804387 o Permit osf1-emulated programs to modify uid/gid under jail by
switching suser() to suser_xxx() and adding PRISON_ROOT flag.
2001-11-01 20:16:03 +00:00
mjacob
c33fe92cba Fix misspelling in comment. 2001-10-31 18:07:38 +00:00
des
f5a4c275f5 Eliminate the prefix parameter to linux_emul_find(), which was always
linux_emul_path anyway.  Linux_emul_find() has interesting bugs in its
prefix handling (which luckily are not currently exploitable); this
commit is preliminary to an attempt at cleaning it up.

Approved by:	marcel
2001-10-27 11:15:19 +00:00
dillon
f810fc9704 minor commenting based on syscall environment 2001-10-26 20:35:52 +00:00
mjacob
c55c6300c8 Detach the prom console when platform.cons_init is called. This seems
to avoid most of the double character kernel goop we've been having by having
both a prom console && a normal console.

Was not able to test with graphics head. Hope this doesn't break anything.

Reviewed by:	silence on alpha
2001-10-26 16:13:47 +00:00
jhb
46e3f92a5d Add a per-thread ucred reference for syscalls and synchronous traps from
userland.  The per thread ucred reference is immutable and thus needs no
locks to be read.  However, until all the proc locking associated with
writes to p_ucred are completed, it is still not safe to use the per-thread
reference.

Tested on:	x86 (SMP), alpha, sparc64
2001-10-26 08:12:54 +00:00
jlemon
86a48bed45 cn_tab no longer exists, use cnadd() to add a console device. Note that
this may result in duplicate console output in some cases.
2001-10-24 18:30:05 +00:00
jlemon
545cae8749 Remove call to cninit_finish(). 2001-10-24 17:42:01 +00:00
mike
47a3c1f5da Remove funky right justification.
Pointed out by:	bde
2001-10-23 00:42:15 +00:00
des
f4cecd8fd8 Move procfs_* from procfs_machdep.c into sys_process.c, and rename them to
proc_* in the process; procfs_machdep.c is no longer needed.

Run-tested on i386, build-tested on Alpha, untested on other platforms.
2001-10-21 23:57:24 +00:00
des
68ea04e864 [partially forced commit due to pilot error in earlier commit attempt]
{set,fill}_{,fp,db}regs() fixup:

 - Add dummy {set,fill}_dbregs() on architectures that don't have them.

 - KSEfy the powerpc versions (struct proc -> struct thread).

 - Some architectures had the prototypes in md_var.h, some in reg.h, and
   some in both; for consistency, move them to reg.h on all platforms.

These functions aren't really MD (the implementation is MD, but the interface
is MI), so they should move to an MI header, but I haven't figured out which
one yet.

Run-tested on i386, build-tested on Alpha, untested on other platforms.
2001-10-21 22:16:48 +00:00
des
8cf224f4f0 {set,fill}_{,fp,db}regs() fixup:
- Add dummy {set,fill}_dbregs() on architectures that don't have them.

 - KSEfy the powerpc versions (struct proc -> struct thread).

 - Some architectures had the prototypes in md_var.h, some in reg.h, and
   some in both; for consistency, move them to reg.h on all platforms.

These functions aren't really MD (the implementation is MD, but the interface
is MI), so they should move to an MI header, but I haven't figured out which
{set,fill}_{,fp,db}regs() fixup:

 - Add dummy {set,fill}_dbregs() on architectures that don't have them.

 - KSEfy the powerpc versions (struct proc -> struct thread).

 - Some architectures had the prototypes in md_var.h, some in reg.h, and
   some in both; for consistency, move them to reg.h on all platforms.

These functions aren't really MD (the implementation is MD, but the interface
is MI), so they should move to an MI header, but I haven't figured out which
one yet.

Run-tested on i386, build-tested on Alpha, untested on other platforms.
2001-10-21 22:14:00 +00:00
gallatin
d9b89a94d8 - splhigh()/splx() -> critical_enter()/critical_exit()
- fix KV macro in t2_pci.c to include the sable_lynx_base variable
so that the T2 CSRs can be found on lynxes.   Current should be
bootable on lynxes now.
2001-10-20 21:05:14 +00:00
mjacob
bdff8645a6 Remove wx. 2001-10-20 18:50:31 +00:00
gallatin
60a8e7b108 apparently EV5 2x00s have their t2 CSRs where I'd expect to find
them on a  2100A

Thanks to Tyler Willingham <ze_willow@yahoo.com> for letting me
test this on his AS2000
2001-10-20 01:27:23 +00:00
obrien
e4ab2c9a0f Try two on the preprocessing logic.
Reviewed by:	ru
2001-10-19 20:01:01 +00:00
jhb
d0bdf2ae5d Remove unneeded sys/mutex.h includes. 2001-10-19 19:23:32 +00:00
jhb
7c87908b48 Move sys/mutex.h include after sys/lock.h to ensure we use the proper
versions of the mutex operations.
2001-10-19 19:22:04 +00:00
obrien
975b6d2e75 Blah, fix braino where ru had to remind me of proper preprocessor syntax.
Bad fingers, no cookie.
2001-10-19 19:17:11 +00:00
marcel
34dc4c548d After removing the bogus differences, any real incompatibilities
have been merged into /sys/compat/linux/linux_ioctl.h. This file
is now unused.
2001-10-19 08:20:15 +00:00
obrien
2b9b303646 My attempts at minimizing the number of #def's got me in trouble. 2001-10-18 16:07:21 +00:00
obrien
1d7ce16d9a Add support for "__gnuc_va_list". Some overly "smart" libraries assume
the existence of the __gnuc_va_list type[*] because our compiler is GCC.

[*] __gnuc_va_list is defined in the GCC ginclude/stdarg.h replacement
headerwhich we don't use.
2001-10-18 00:27:39 +00:00
obrien
1ee32f686a Sync comments with i386. 2001-10-18 00:00:31 +00:00
jhb
946a8b3717 Small cleanups to the handling of Giant in trap(). 2001-10-17 21:55:56 +00:00
mjacob
e666e03e1a Make SCSI changer and SES devices standard in generic kernels.
Reviewed by:	ken@kdm.org
2001-10-16 22:22:58 +00:00
marcel
ff7999f46e Implement linux_chown and linux_lchown. The fchown syscall maps
directly to the native syscall, because no filename handling
needs to be done.

Tested by: Martin Blapp <mb@imp.ch>
2001-10-16 06:15:36 +00:00
des
415c64e785 In FreeBSD's ifreq, ifr_ifru.ifru_flags is an array of two chars, while Linux
defines it as a short.  Change that to an array of one short so that FreeBSD's
ifr_flags macro will work (it evaluates to ifr_ifru.ifru_flags[0]).
2001-10-15 20:06:34 +00:00
bde
60cac98968 Backed out the quick fixes for the transient breakage of <sys/mount.h>
in rev.1.106 of the latter (don't include <sys/socket.h> and/or
<net/radix.h> just to work around bugs in <sys/mount.h>).
2001-10-13 06:05:37 +00:00
mjacob
fa0b537235 roll out last change 2001-10-12 02:30:53 +00:00
mjacob
a6fcfa2afc Remove the hiding of some prototype declarations. 2001-10-11 21:48:02 +00:00
mjacob
61923fecdf remove unused variable declaration 2001-10-11 21:47:27 +00:00
obrien
8abab35780 We use proc_rwmem (with the correct number of args) rather than procfs_domem
in the new world order or procfs.

Submitted by:	des
2001-10-11 21:17:31 +00:00
mjacob
f53afa40b9 Note that PROCFS is mandatory at this time- until we fix the
ptrace code to not call things directly from procfs we can't
very well have procfs be a module.
2001-10-11 18:36:41 +00:00
ps
db0d5cd641 Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader
tunable.

Reviewed by:	peter
MFC after:	2 weeks
2001-10-10 23:06:54 +00:00
des
29c5c858fc Dissociate ptrace from procfs.
Until now, the ptrace syscall was implemented as a wrapper that called
various functions in procfs depending on which ptrace operation was
requested.  Most of these functions were themselves wrappers around
procfs_{read,write}_{,db,fp}regs(), with only some extra error checks,
which weren't necessary in the ptrace case anyway.

This commit moves procfs_rwmem() from procfs_mem.c into sys_process.c
(renaming it to proc_rwmem() in the process), and implements ptrace()
directly in terms of procfs_{read,write}_{,db,fp}regs() instead of
having it fake up a struct uio and then call procfs_do{,db,fp}regs().

It also moves the prototypes for procfs_{read,write}_{,db,fp}regs()
and proc_rwmem() from proc.h to ptrace.h, and marks all procfs files
except procfs_machdep.c as "optional procfs" instead of "standard".
2001-10-07 20:08:42 +00:00
marcel
d76212b1b4 Regen. 2001-10-07 00:21:18 +00:00
marcel
95e78e313c Fix the NODEF entry for setpgid() so that it matches the NODEF
entries in sys/kern/syscalls.master.
2001-10-07 00:20:08 +00:00
mjacob
37494cc800 Fix problem where a user buffer outside of the area being tested
will be corrupted.

PR:		29194
Obtained from:	Tor.Egge@fast.no
MFC after:	2 weeks
2001-10-02 18:34:20 +00:00
jhb
fb7fca45bb Sigh, statclock_process() takes a KSE instead of a thread for its first
argument.
2001-10-01 22:26:47 +00:00
wilko
86938caa26 Add AlphaPC64 to comments. Correct names (ds10 -> DS10 etc) 2001-09-30 12:09:50 +00:00
marcel
0e0d997b9e o Remove the linux_setpgid() stub.
o  Stop using linux_getpgid(); use getpgid() instead.

PR: kern/21402
2001-09-28 01:39:19 +00:00
marcel
aee394ff68 Stop using linux_getpgid(). The implementation at this time is
broken and fixing it only creates a duplicate of what is already
in the FreeBSD kernel. Therefore, map the syscall directly to
getpgid().

PR: kern/21402
Submitted by: Christian Weisgerber <naddy@mips.inka.de>

While here, redefine the second entry for setpgid() so that we
don't need a stub. This is achieved by giving the second instance
the type NODEF.
2001-09-28 01:36:45 +00:00
rwatson
3ac68ecf7b o securelevel_gt() patches came from pre-KSE alpha -- this revision
fixes the compile and uses td->td_proc instead of p.

Obtained from:	TrustedBSD Project
2001-09-26 20:27:23 +00:00
brooks
34d1edd712 The faith(4) device is no longer a count device so don't specify a count. 2001-09-25 18:56:40 +00:00
obrien
94003d0787 + Fix misplacement of `txp'
+ Document our -CURRENT debugging bits
2001-09-24 03:23:48 +00:00
peter
aac6765913 Overzealous search/replace: PROC_LOCK_ASSERT(p, not PROC_LOCK_ASSERT(td,
Pointy-hat to:  peter
2001-09-23 06:16:01 +00:00
jhb
8fad87731a Fix statclock() on non-boot processors: curproc -> curthread. 2001-09-21 23:10:11 +00:00
peter
d9bfebcabd Export kernbase like on the i386. I dont think the alpha kernel is
movable like on the x86, but this gets things in sync and reduces
the need for special cases in things like ps and libkvm etc.
2001-09-20 09:09:03 +00:00
peter
7d24eb386c Finish KSE-ification updates. 2001-09-20 05:15:04 +00:00
peter
e0febadcf9 Regenerate. This seems to have been missed in the last commit. 2001-09-20 05:01:08 +00:00
peter
15d80be8db Pass 1: update for KSE and NFS changes. Somehow this got missed.
osf1_mount.c isn't complete yet.
2001-09-20 04:56:42 +00:00
peter
956cee07ea Make this compile again. I would have sworn that I did this already in
the KSE tree and thought it had been merged.
2001-09-20 04:55:06 +00:00
peter
ccb317277e Make alpha/genassym.c compile again. *oops* 2001-09-20 02:48:03 +00:00
peter
85182a8d78 Cleanup and split of nfs client and server code.
This builds on the top of several repo-copies.
2001-09-18 23:32:09 +00:00
jhb
0fc343f1d8 - If we ever do the per-cpu KTR stuff, the index won't be volatile as it
will be private to each CPU.
- Re-style(9) the globaldata structures.  There really needs to be a MI
  struct pcpu that has a MD struct mdpcpu member at some point.
2001-09-18 21:46:26 +00:00
mr
fc0a6c1596 Add a wrapper for linux_getsid -> getsid Syscall. 2001-09-15 09:57:30 +00:00
mr
99ae75a097 Implement LINUX_[SEM|IPC]_[STAT|INFO]
to make /compat/linux/usr/bin/ipcs -s happy.

PR:		kern/29698 (part)
Reviewed by:	audit
2001-09-15 09:50:38 +00:00
marcel
c727378338 Fix off by one error introduced by the use of the ifnet_byindex()
macro. The commit log clearly states that the index given to the
macro is one higher than previously used to index the array. This
wasn't represented in the code and resulted in kernel page faults.

Reported by: Andrew Atrens <atrens@nortelnetworks.com>
2001-09-14 08:04:25 +00:00
jhb
c033f80c47 Whitespace fixes. 2001-09-12 22:00:06 +00:00
jhb
2a7190bd15 Style(9) fixes. 2001-09-12 21:57:30 +00:00
jhb
b7943aa8cf Restore style(9) fixes from commit prior to previous commit. 2001-09-12 21:56:28 +00:00
julian
5596676e6c KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
peter
335f7eeb63 Fix a warning. Dont convert away from const to just re-add it in the
wrapped function.
2001-09-10 10:48:19 +00:00
dfr
e755df50cd Implement support for MAXMEM option and hw.physmem environment variable
which can be used to artificially reduce the memory size of a machine
for debugging (or other) purposes.
2001-09-10 07:03:59 +00:00
peter
96b9a12bd2 Rip some well duplicated code out of cpu_wait() and cpu_exit() and move
it to the MI area.  KSE touched cpu_wait() which had the same change
replicated five ways for each platform.  Now it can just do it once.
The only MD parts seemed to be dealing with fpu state cleanup and things
like vm86 cleanup on x86.  The rest was identical.

XXX: ia64 and powerpc did not have cpu_throw(), so I've put a functional
stub in place.

Reviewed by:	jake, tmm, dillon
2001-09-10 04:28:58 +00:00
dfr
774ebbef7e Fix some problems with the reference/modified tracking which I introduced
with the last change to the way the pmap_emulate_reference() works. This
should fix a number of memory corruption problems and also should stop the
mtimes of executables changing all the time.
2001-09-09 16:36:59 +00:00
peter
b3b3a6b1c9 Missing part of dillon's coredump commit. cpu_coredump() was still
passing IO_NODELOCKED to vn_rdwr(), this would cause operations on the
unlocked core vnode and softupdates nastiness if an a.out binary cored.
2001-09-08 22:18:58 +00:00
marcel
df61d9eb64 Round of cleanups and enhancements. These include (in random order):
o  Introduce private types for use in linux syscalls for two reasons:
   1. establish type independence for ease in porting and,
   2. provide a visual queue as to which syscalls have proper
      prototypes to further cleanup the i386/alpha split.
   Linuxulator types are prefixed by 'l_'. void and char have not
   been "virtualized".

o  Provide dummy functions for all syscalls and remove dummy functions
   or implementations of truely obsolete syscalls.

o  Sanitize the shm*, sem* and msg* syscalls.

o  Make a first attempt to implement the linux_sysctl syscall. At this
   time it only returns one MIB (KERN_VERSION), but most importantly,
   it tells us when we need to add additional sysctls :-)

o  Bump the kenel version up to 2.4.2 (this is not the same as the
   KERN_VERSION MIB, BTW).

o  Implement new syscalls, of which most are specific to i386. Our
   syscall table is now up to date with Linux 2.4.2. Some highlights:
   -  Implement the 32-bit uid_t and gid_t bases syscalls.
   -  Implement a couple of 64-bit file size/offset bases syscalls.

o  Fix or improve numerous syscalls and prototypes.

o  Reduce style(9) violations while I'm here. Especially indentation
   inconsistencies within the same file are addressed. Re-indenting
   did not obfuscate actual changes to the extend that it could not
   be combined.

NOTE: I spend some time testing these changes and found that if there
      were regressions, they were not caused by these changes AFAICT.
      It was observed that installing a RH 7.1 runtime environment
      did make matters worse. Hangs and/or reboots have been observed
      with and without these changes, so when it failed to make life
      better in cases it doesn't look like it made it worse.
2001-09-08 19:07:04 +00:00
marcel
bc484946ce o Introduce private types for use in linux syscalls for two reasons:
1. establish type independence for ease in porting and,
   2. provide a visual queue as to which syscalls have proper
      prototypes to further cleanup the i386/alpha split.
   Linuxulator types are prefixed by 'l_'. void and char have not
   been "virtualized".

o  Provide dummy functions for all unimplemented syscalls, except for
   the osf1 syscalls. This can only be done if the osfulator
   implements at least all syscalls used by the linuxulator. Remove
   dummy functions for syscalls that are now truely unimplemented.

o  Set the syscall namespace as follows: Mark a syscall as OSF1 if
   the Linux kernel has prefixed the syscall with 'osf_' and has
   provided special implementations for it. Otherwise mark the
   syscall as LINUX by default. Some of the LINUX syscalls remain
   marked as BSD or POSIX.

o  Rename syscalls so they match the names used in the Linux kernel.
   Also, provide more accurate prototypes. This generally improves
   cross-referencing and reduces head-scratching.

o  Fix the (g|s)etresuid syscalls. They mapped to (g|s)etresgid.

o  Sanitize the the shm*, sem* and msg* syscalls. Their prototypes
   were dictated by the way these syscalls were used in the i386
   code. That has been fixed. NOTE: linux_semctl now passes it's
   'arg' parameter by value and not by reference.

o  Fix prototype of linux_utime. It takes a struct timeval, not a
   struct utimbuf.

o  Fix the linux_sysfs syscall. It's index is not 255, but 254.

o  Implement the following syscalls:
     linux_sysctl

o  Add the following new syscalls:
     (g|s)etresgid
     linux_pivot_root (dummy)
     linux_mincore (dummy)
     linux_pciconfig_iobase (dummy)
     linux_getdents64
2001-09-08 18:49:31 +00:00
marcel
ce430d113c Wrap array accesses in macros, which also happen to be lvalues:
ifnet_addrs[i - 1]  -> ifaddr_byindex(i)
        ifindex2ifnet[i]    -> ifnet_byindex(i)

This is intended to ease the conversion to SMPng.

Forgotten by: jlemon
2001-09-08 04:20:45 +00:00
jhb
054237d0be Call sendsig() with the proc lock held and return with it held. 2001-09-06 22:20:41 +00:00
obrien
34ad4938d7 style(9) the structure definitions. 2001-09-05 01:36:46 +00:00
peter
16c92cf0c3 Zap #if 0'ed map init code that got moved to the MI area.
Convert the powerpc tree to use the common code.
2001-09-04 08:42:35 +00:00
peter
119d201aab Nuke #if 0'ed "setredzone()" stub. We never used it, and probably
never will.  I've implemented an optional redzone as part of the KSE
upage breakup.
2001-09-04 08:36:46 +00:00
dillon
0bdd59d16a Synchronize syscalls.master(s) with recent Giant pushdown work 2001-09-01 19:36:48 +00:00
peter
0813add3ec Same treatment as i386/isa/pmap.c - clean up some style to sync towards
KSE diff.
2001-08-31 06:19:08 +00:00
peter
af89b81901 Tidy up cpu_fork() a little. This is mainly for changes I've been
working on in the KSE area.
2001-08-31 02:11:24 +00:00
dillon
08e732a88b Remove the MPSAFE keyword from the parser for syscalls.master.
Instead introduce the [M] prefix to existing keywords.  e.g.
MSTD is the MP SAFE version of STD.  This is prepatory for a
massive Giant lock pushdown.  The old MPSAFE keyword made
syscalls.master too messy.

Begin comments MP-Safe procedures with the comment:
/*
 * MPSAFE
 */
This comments means that the procedure may be called without
Giant held (The procedure itself may still need to obtain
Giant temporarily to do its thing).

sv_prepsyscall() is now MP SAFE and assumed to be MP SAFE
sv_transtrap() is now MP SAFE and assumed to be MP SAFE

ktrsyscall() and ktrsysret() are now MP SAFE (Giant Pushdown)
trapsignal() is now MP SAFE (Giant Pushdown)

Places which used to do the if (mtx_owned(&Giant)) mtx_unlock(&Giant)
test in syscall[2]() in */*/trap.c now do not.  Instead they
explicitly unlock Giant if they previously obtained it, and then
assert that it is no longer held to catch broken system calls.

Rebuild syscall tables.
2001-08-30 18:50:57 +00:00
mike
a45063618a o Remove some GCCisms in src/powerpc/include/endian.h.
o Unify <machine/endian.h>'s across all architectures.
o Make bswapXX() functions use a different spelling of u_int16_t and
  friends to reduce namespace pollution.  The bswapXX() functions
  don't actually exist, but we'll probably import these at some
  point.  Atleast one driver (if_de) depends on bswapXX() for big
  endian cases.
o Deprecate byteorder(3) prototypes from <sys/types.h>, these are
  now prototyped indirectly in <arpa/inet.h>.
o Deprecate in_addr_t and in_port_t typedefs in <sys/types.h>, these
  are now typedef'd in <arpa/inet.h>.
o Change byteorder(3) prototypes to use standards compliant uint32_t
  (spelled __uint32_t to reduce namespace pollution).
o Document new preferred headers and standards compliance.

Discussed with:	bde
PR:		29946
Reviewed by:	bmilekic
2001-08-30 00:04:19 +00:00
peter
79bfbf84c5 Correctly #ifdef COMPAT_43 around osendsig() prototype. 2001-08-27 06:19:18 +00:00
peter
e031b90e2a Enable hardwiring of things like tunables from embedded enironments
that do not start from loader(8).
2001-08-27 05:11:53 +00:00
peter
5fa2d1a53c vm_page_zero_idle() is no longer MD. 2001-08-25 04:54:25 +00:00
peter
5f5f9e4c4e Remove a reference to MAP_INHERIT. 2001-08-25 04:27:40 +00:00
dillon
abe30f58d8 Move most of the kernel submap initialization code, including the
timeout callwheel and buffer cache, out of the platform specific areas
and into the machine independant area.  i386 and alpha adjusted here.
Other cpus can be fixed piecemeal.

Reviewed by:    freebsd-smp, jake
2001-08-22 04:07:27 +00:00
peter
8580722a57 Strip out some #if's for old implementations of global data pointers. 2001-08-21 22:14:13 +00:00
jhb
bfb2a1d964 Protect prototype of ptrace_clear_single_step() with #ifdef _KERNEL/#endif.
Requested by:	bde
2001-08-21 13:42:39 +00:00
peter
4694b279a2 Make COMPAT_43 optional again. XXX we need COMPAT_FBSD3 etc for this
stuff.
2001-08-21 02:32:59 +00:00
jhb
f812c1feab Turn off SMP on Alpha for the time being. There are some memory ordering
issues that can result in panics and probably data corruption on SMP
systems right now.  When they are fixed this can be turned back on.
2001-08-18 01:12:43 +00:00
jhb
565c172bb8 Grab Giant around trapsignal() at the bottom of trap().
Reported by:	obrien
2001-08-18 01:08:45 +00:00
jhb
f76c65e1be Remove redundant declarations of functions that are declared in
sys/ptrace.h.
2001-08-18 00:57:32 +00:00
obrien
fd6406eeb6 Fix style nits. 2001-08-17 16:54:09 +00:00
obrien
c042e10a58 Prototype the ptrace_*() 2001-08-16 19:57:36 +00:00
obrien
ab92d36a36 Fix a dangling { 2001-08-16 10:32:42 +00:00
obrien
358f773cec style(9) and make consistent across platforms 2001-08-16 09:29:35 +00:00
ache
2675b7e4e4 OFF_T -> OFF (more standard style) 2001-08-15 19:50:59 +00:00
ache
b436c396c9 Add OFF_T_MAX/OFF_T_MIN 2001-08-15 19:12:46 +00:00
wpaul
0f92f56bab Teach bus_dmamem_free() about contigfree(). This is a bit of a hack,
but it's better than the buggy behavior we have now. If we contigmalloc()
buffers in bus_dmamem_alloc(), then we must configfree() them in
bus_dmamem_free(). Trying to free() them is wrong, and will cause
a panic (at least, it does on the alpha.)

I tripped over this when trying to kldunload my busdma-ified if_rl
driver.
2001-08-15 17:26:54 +00:00
mjacob
7965e326b3 Old business: some SMP support. 2001-08-15 17:23:22 +00:00
mjacob
817b1d9e64 Old business: be able to disable processor configuration from resource. 2001-08-15 17:03:13 +00:00
obrien
09d3a96a2f Style changes to commonize the various platforms. 2001-08-15 04:02:41 +00:00
wpaul
6b7f805e47 Fix yet another "unconditionally free()ing memory without even checking
to see if it was malloc()ed first" bug. In bus_dmamap_create(), one of
two things can happen: either we need to allocate a special map due to
some manner of bounce buffering requirement, or we can DMA a buffer
in place. On the x86 platform, the "in place" case results in
bus_dmamap_create() returning a dmamap of NULL. The bus_dmamap_destroy()
routine later checks for NULL and won't bother free()ing the map if
it detects this condition.

But on the alpha, we don't use NULL, we use a statically allocated map
called nobounce_dmamap(). Unfortunately, bus_dmamap_destroy() does not
handle the condition where we attempt to destroy such a map: it tries
to free() the dmamap, which causes a panic.

Fix: test that map != &nobounce_dmamap before trying to free() it.

With this fix, my busdma-ified if_sis driver works on the alpha. I'm
a bit alarmed that I'm the first person ever to trip over this bug, since
we have been using busdma on the alpha for a while, and since it sort
of screams out "Hi! I'm a bug! Booga-booga!" when you look at it.

(Somewhere, somebody will say: "But Bill, why don't you just not bother
destroying the maps in this case." Because the API is supposed to be
a) symetrical and b) opaque to the caller. I can't know whether it's safe
to skip the bus_dmamap_destroy() step or not without sticking my fingers
into unsafe places, which is what I wanted to avoid in the first place.)
2001-08-14 21:56:53 +00:00
jhb
fed209ef95 In prom_halt(), set the halt restart flags on the current CPU, not the
boot CPU.  This was the reason reboots on SMP systems could result in
weird hangs.  Unlike the x86, we do not need to switch back to the boot
CPU in order to reboot the machine.  See Section 3.4.5 of Part III
(Console Interface Architecture) from the Alpha Architecture Reference
Manual (aka the Brown Book) for more info.
2001-08-13 22:44:55 +00:00
jhb
a81e520c43 Remove IPI_HALT to make way for a more correct fix for halts and restarts
on SMP alphas.
2001-08-13 22:41:15 +00:00
jhb
7008cc6193 Minor style nits: cleanup and add some function prototypes. 2001-08-13 22:38:36 +00:00
jhb
4a89454dcd - Close races with signals and other AST's being triggered while we are in
the process of exiting the kernel.  The ast() function now loops as long
  as the PS_ASTPENDING or PS_NEEDRESCHED flags are set.  It returns with
  preemption disabled so that any further AST's that arrive via an
  interrupt will be delayed until the low-level MD code returns to user
  mode.
- Use u_int's to store the tick counts for profiling purposes so that we
  do not need sched_lock just to read p_sticks.  This also closes a
  problem where the call to addupc_task() could screw up the arithmetic
  due to non-atomic reads of p_sticks.
- Axe need_proftick(), aston(), astoff(), astpending(), need_resched(),
  clear_resched(), and resched_wanted() in favor of direct bit operations
  on p_sflag.
- Fix up locking with sched_lock some.  In addupc_intr(), use sched_lock
  to ensure pr_addr and pr_ticks are updated atomically with setting
  PS_OWEUPC.  In ast() we clear pr_ticks atomically with clearing
  PS_OWEUPC.  We also do not grab the lock just to test a flag.
- Simplify the handling of Giant in ast() slightly.

Reviewed by:	bde (mostly)
2001-08-10 22:53:32 +00:00
peter
bb5c43c4b8 Zap 'ptrace(PT_READ_U, ...)' and 'ptrace(PT_WRITE_U, ...)' since they
are a really nasty interface that should have been killed long ago
when 'ptrace(PT_[SG]ETREGS' etc came along.  The entity that they
operate on (struct user) will not be around much longer since it
is part-per-process and part-per-thread in a post-KSE world.

gdb does not actually use this except for the obscure 'info udot'
command which does a hexdump of as much of the child's 'struct user'
as it can get.  It carries its own #defines so it doesn't break
compiles.
2001-08-08 05:25:15 +00:00
mjacob
d972cca081 Revert part of previous- I misunderstood the use of 'ncpus'- I thought it'd
been hack to keep clocks from being reinitialized.
2001-08-01 20:35:42 +00:00
mjacob
19b910842d Don't initialize a clock twice (it's not a function of number of
cpus).
2001-08-01 19:40:11 +00:00
jake
21b80f4133 Use a machine dependent type, Elf_Hashelt, for the elements of the elf
dynamic symbol table buckets and chains.  The sparc64 toolchain uses 32
bit .hash entries, unlike other 64 bits architectures (alpha), which use
64 bit entries.

Discussed with: dfr, jdp
2001-07-31 03:46:39 +00:00
peter
036aced92f Make PMAP_SHPGPERPROC tunable. One shouldn't need to recompile a kernel
for this, since it is easy to run into with large systems with lots of
shared mmap space.

Obtained from:	yahoo
2001-07-27 01:08:59 +00:00
peter
1d4cc78f8d Call the early tunable setup functions as soon as kern_envp is available.
Some things depend on hz being set not long after this.
2001-07-26 23:06:44 +00:00
bmilekic
0caeab3ccd - Do not handle the per-CPU containers in mbuf code as though the cpuids
were indices in a dense array. The cpuids are a sparse set and treat
  them as such, setting up containers only for CPUs activated during
  mb_init().

- Fix netstat(1) and systat(1) to treat the per-CPU stats area as a sparse
  map, in accordance with the above.

This allows us to properly boot with certain CPUs disactivated. However, if
we later decide to re-activate said CPUs, we will barf until we decide to
implement CPU spinon/spinoff callback hooks to allow for said CPUs' per-CPU
containers to get configured on their activation.

Reported by: mjacob
Partially (sys/ diffs) Submitted by: mjacob
2001-07-26 18:47:46 +00:00
dfr
f8df84f8c5 Simplify the implementation of pmap_emulate_reference(). The new version
simply manipulates the pte which faulted instead of traversing the mapping
list for that page. This makes it possible to complete the trap without
needing locks and incidentally improves the accuracy of some statistics
used by the VM system.
2001-07-24 07:13:07 +00:00
wpaul
08feeb2436 You were knocked senseless by the Boomerang, spun around by the Cyclone,
blown over by the Hurricane and had a house dropped on you by the Tornado.
Now it's time to have your parade rained on by... the Typhoon!

This commit adds driver support for 3Com 3cR990 10/100 ethernet
adapters based on the Typhoon I and Typhoon II chipsets. This is actually
a port of the OpenBSD driver with many hacks by me.

No Virginia, there isn't any support for the hardware crypto yet. However
there is support for TCP/IP checksum offload and VLANs.

Special thanks go to Jason Wright, Aaron Campbell and Theo de Raadt for
squeezing enough info out of 3Com to get this written, and for doing
most of the hard work.

Manual page is included. Compiled as a module and included in GENERIC.
2001-07-23 20:44:54 +00:00
obrien
74c4618704 Now that config(8) has stopped breaking POLA (mkmakefile.c rev 1.69) by
always including <KERNEL>.hints if its exist reguardless of the lack of a
"hints" directive in the <KERNEL> file; we can have a real hints file again.
2001-07-15 17:56:53 +00:00
obrien
c37f9bf14e Turn off preemption on the Alpha for the time being. Peter and JHB aren't
sure when things got so bad (JHB says preemption worked just fine for months
before the AlbertVM commit).  Even post DillionVM locking commit, Miatas
(DEC Personal Workstations) are very fragile -- not making it thru a world
build.  With this patch it does.

Those hacking on SMPng will want to locally back out this commit.  The rest
of us will want to run with it until the SMPng guys figure out the problem(s).

Submitted by:	peter
2001-07-15 00:03:01 +00:00
mjacob
59f5dd5135 Fix reboot hangs that have happened with multiple processors
on Alpha 4100s.

Basically, if you're halting or you're rebooting, you should
tell all other processors to halt first. Define IPI_HALT- IPI_STOP
is not what we want for this purpose, which will call prom_halt(0)
on receipt.

The processor running the halt or reboot wil send an IPI_HALT to all
other processors, delay a bit, then continue to do what what it was
planning on doing (prom_halt({0|1})).
2001-07-14 21:37:57 +00:00
dd
c3ada167d0 Move fxp to the miibus section where it belongs. 2001-07-14 06:35:54 +00:00
obrien
2e97520f29 I really should have just commented out this intire file vs. removing all
the contents.  One may still want the contents as reference for creating
/boot/device.hints.
2001-07-13 18:45:06 +00:00
obrien
2d388a1550 Hints processing is FUBAR'ed right now.
By default, we will end up with a duplicate set of hints if people have
a properly populated /boot/device.hints.  So for now, remove the hints
here until Peter revisits the new hints processing from mid-June that
broke Alpha booting.
2001-07-13 17:43:38 +00:00
dd
8795e3b574 `pcn' supports AMD Am79C97x cards, not Am79C79x cards.
PR:		28946
Submitted by:	Ryuichiro Imura <imura@ryu16.org>
2001-07-13 13:34:08 +00:00
bsd
17eb1bfcbf Add 'hwatch' and 'dhwatch' ddb commands analogous to 'watch' and
'dwatch'.  The new commands install hardware watchpoints if supported
by the architecture and if there are enough registers to cover the
desired memory area.

No objection by: audit@, hackers@

MFC after: 2 weeks
2001-07-11 03:15:25 +00:00
mjacob
5a98f880fa Sanity guard- return ENODEV if we don't have a good IRQ resource. 2001-07-11 02:24:28 +00:00
mjacob
a896ae072f Slight cleanliness- add an unlock of Giant in one dopanic case. Do
some very minor formatting changes.
2001-07-11 02:23:31 +00:00
julian
869029d5d7 A set of changes to reduce the number of include files the kernel
takes from /usr/include. I cannot check them on alpha.. (will try beast)

Briefly looked at by: Warner Losh <imp@harmony.village.org>
2001-07-08 04:56:07 +00:00
mjacob
f71125025e Bracket call to vm_page_flag_set with required Giant lock/unlock. 2001-07-05 17:27:50 +00:00
mjacob
fcb893ccd5 You cannot require Giant to be locked when you haven't acquired it yet. 2001-07-05 16:55:50 +00:00
dillon
1cf218e40f Move vm_page_zero_idle() from machine-dependant sections to a
machine-independant source file, vm/vm_zeroidle.c.  It was exactly the
same for all platforms and updating them all was getting annoying.
2001-07-05 01:32:42 +00:00
dillon
93369f554a Reorg vm_page.c into vm_page.c, vm_pageq.c, and vm_contig.c (for contigmalloc).
Also removed some spl's and added some VM mutexes, but they are not actually
used yet, so this commit does not really make any operational changes
to the system.

vm_page.c relates to vm_page_t manipulation, including high level deactivation,
activation, etc...  vm_pageq.c relates to finding free pages and aquiring
exclusive access to a page queue (exclusivity part not yet implemented).
And the world still builds... :-)
2001-07-04 23:27:09 +00:00
dillon
e028603b7e With Alfred's permission, remove vm_mtx in favor of a fine-grained approach
(this commit is just the first stage).  Also add various GIANT_ macros to
formalize the removal of Giant, making it easy to test in a more piecemeal
fashion. These macros will allow us to test fine-grained locks to a degree
before removing Giant, and also after, and to remove Giant in a piecemeal
fashion via sysctl's on those subsystems which the authors believe can
operate without Giant.
2001-07-04 16:20:28 +00:00
mjacob
d506b2b2f1 Follow Bruce's suggestions. They're probably wrong, but better than before. 2001-07-04 05:16:56 +00:00
jhb
f43dc7e223 Allow Giant to be recursed when a process terminates. 2001-07-03 05:09:48 +00:00
brooks
e7b9bc714f gif(4) and stf(4) modernization:
- Remove gif dependencies from stf.
 - Make gif and stf into modules
 - Make gif cloneable.

PR:		kern/27983
Reviewed by:	ru, ume
Obtained from:	NetBSD
MFC after:	1 week
2001-07-02 21:02:09 +00:00
imp
8555c6bb29 Don't need the .keep_me files. Obrien and I committed past each other.
Add 0-9 to the list of possible kernel names at matsushita-san's
suggestion.

Submitted by: Makoto MATSUSHITA-san <matusita@jp.FreeBSD.org>
2001-07-01 23:35:44 +00:00
obrien
401c637a19 Ensure sys/${MACHINE}/compile/FOO exists
Reviewed by: arch, imp, peter, and the USENIX terminal room secret kernel cabal
2001-06-30 15:16:29 +00:00
imp
79f0cebcfb Really do proper keepme files in the compile directories. Use
.cvsignore file for [A-Za-z]* to keep these directories around rather
than waste a file on .keepme.  This should also make people's built
trees place nice with CVS.

Idea for .cvsignore: peter (although I suggested the regexp)
Pointed out by: Makoto MATSUSHITA-san <matusita@jp.FreeBSD.org>
Llama's costuming by: Fernamdo Llamas
2001-06-30 14:38:32 +00:00
imp
bb25a9f669 Repo copy i8237.h to dev/ic so we can get rid of some of the final vestiges
of includes of i386 files from non-i386 ports.
2001-06-30 05:29:11 +00:00
jhb
cbc88996c6 Move ast() and userret() to sys/kern/subr_trap.c now that they are MI. 2001-06-29 19:51:37 +00:00
jhb
d82893e676 Add a new MI pointer to the process' trapframe p_frame instead of using
various differently named pointers buried under p_md.

Reviewed by:	jake (in principle)
2001-06-29 11:10:41 +00:00
jhb
3c7ad73470 Grab Giant around fault handling at the top level for now. 2001-06-29 04:18:59 +00:00
jhb
979d655977 Allow the clock lock to recurse. 2001-06-25 23:56:56 +00:00
jhb
3eb27b376a - Grab the vm lock around all of pmap_emulate_reference() as it manipulates
vm_page_t's.
- Add a KTR_TRAP tracepoint to trap() on the alpha that displays the
  contents of a0, a1, and a2 to make debugging of nested traps that
  panic before displaying any useful output easier.
2001-06-25 23:52:25 +00:00
mjacob
368d4cfb27 fix oopslet for PROC_UNLOCK_NOSWITCH 2001-06-24 18:23:17 +00:00
jhb
e5e16e09ad - Grab the proc lock around CURSIG and postsig(). Don't release the proc
lock until after grabbing the sched_lock to avoid CURSIG racing with
  psignal.
- Don't grab Giant for addupc_task() as it isn't needed.

Reported by:	tegge (signal race), bde (addupc_task a while back)
2001-06-22 23:05:11 +00:00
jhb
f8f883d9d6 Be conservative and always perform an mb after an atomic_cmpset operation. 2001-06-22 21:13:20 +00:00
jhb
b6786eca7f Doh, missed a printf -> db_printf in the previous commit. 2001-06-22 15:37:48 +00:00
peter
e3c015c7bb Clean up some junk. The bogus trapframe on the stack was removed from the
MI code in August 2000 elsewhere.
2001-06-16 22:07:32 +00:00
jhb
134649df9d I'm a dunce. Clean up some warnings by axeing some unused variables from
the previous commit.
2001-06-15 21:09:44 +00:00
jhb
fc8bd4c1c0 Updates and tweaks to the new trace functionality:
- Use db_printf() instead of printf().
- Clean up decode_syscall() to use regular if-then-else rather than goto's.
- Use the same method of parsing PID's for per-process traces as the x86
  code does: that is, if the address passed in is not a valid kernel
  address, treat it is a decimal pid.
- If the pid of the current process is specified, fall back to using the
  "default" parameters for the trace as curproc's pcb is not valid at this
  point.

MFC after:	1 week
2001-06-15 20:27:44 +00:00
peter
490a3f634c oops. prepare_usermode() died in August 2000 in the MI and x86 code.
Issue raised by:	scottl
2001-06-15 09:59:27 +00:00
mjacob
dda6ce315d If we're not going to use am7990_shutdown, comment it all out.
MFC after:	2 weeks
2001-06-14 19:36:37 +00:00
mjacob
100cff1ed9 Fix Assembler buglet: Warning: .end directive names different symbol than .ent
MFC after:	2 weeks
2001-06-14 19:33:16 +00:00
peter
17e3eb1d7f As per comments in sys/linker_set.h:
BANG! BANG! BANG! BANG! BANG! BANG! CLICK! CLICK! CLICK! CLICK! CLICK!
<reload>
BANG! BANG! BANG! BANG! BANG! BANG! CLICK! CLICK! CLICK! CLICK! CLICK!
2001-06-14 01:28:56 +00:00
gallatin
7a5df26ad4 initialize mp_ncpus in cpu_mp_probe() so that if the probe fails and
cpu_mp_start() is never called, mp_ncpus will have a non-zero value.
This prevents systat from dying with an arithmatic exception caused
by a divide-by-zero error on UP alphas running a GENERIC kernel.
2001-06-13 20:40:24 +00:00
peter
f10fa038c1 With this commit, I hereby pronounce gensetdefs past its use-by date.
Replace the a.out emulation of 'struct linker_set' with something
a little more flexible.  <sys/linker_set.h> now provides macros for
accessing elements and completely hides the implementation.

The linker_set.h macros have been on the back burner in various
forms since 1998 and has ideas and code from Mike Smith (SET_FOREACH()),
John Polstra (ELF clue) and myself (cleaned up API and the conversion
of the rest of the kernel to use it).

The macros declare a strongly typed set.  They return elements with the
type that you declare the set with, rather than a generic void *.

For ELF, we use the magic ld symbols (__start_<setname> and
__stop_<setname>).  Thanks to Richard Henderson <rth@redhat.com> for the
trick about how to force ld to provide them for kld's.

For a.out, we use the old linker_set struct.

NOTE: the item lists are no longer null terminated.  This is why
the code impact is high in certain areas.

The runtime linker has a new method to find the linker set
boundaries depending on which backend format is in use.

linker sets are still module/kld unfriendly and should never be used
for anything that may be modular one day.

Reviewed by:	eivind
2001-06-13 10:58:39 +00:00
gallatin
4dbd2f6652 Use struct device * rather than device_t for (*pci_intr_route args), so
as to match other prototypes in the file.
2001-06-11 18:19:44 +00:00
gallatin
7509c75991 Supply the intpin to the platform.pci_intr_map() function. It turns
out nearly every platform but the one I tested on requires the intpin
to swizzle out the correct intline.

tested by: Martijn Pronk <mpkisbkl@xs4all.nl> (lca_pci)
2001-06-10 19:18:51 +00:00
obrien
f5e17318b3 Fix style of defines. 2001-06-09 05:21:17 +00:00
gallatin
c107f3268b Sync up to v 1.9 of NetBSD's db_trace.c to get access to the
greatly improved traceback code from Ross Harvey.  This code
requires the use of more traceback friendly temporary labels
at kernel entry points, hence the changes to exception.s and
asm.h

Reviewed by: jhb, dfr
Obtained from: NetBSD
MFC after: 1 week
2001-06-08 13:38:02 +00:00
gallatin
ff286ab2bd hold the vm_mtx around vm_map_lookup_entry() and vm_map_findspace() 2001-06-06 14:07:52 +00:00
gallatin
66b81f3469 Apparently, the vm_mtx must be held around vm_map_find(). I'm assuming
that it needn't be held around vm_mmap() since vm_mmap() itself aquires
it.

Sleuthing by: obrien
2001-06-06 13:46:16 +00:00
joerg
4d382deb8b Nuke the various poorly maintained copies of ioctl_fd.h. The file is
not machine-dependant, thus it has been moved out (repo-copied) into
<sys/fdcio.h>.
2001-06-06 06:15:03 +00:00
jhb
7a4f835060 Don't hold sched_lock across addupc_task().
Reported by:	David Taylor <davidt@yadt.co.uk>
Submitted by:	bde
2001-06-06 00:57:24 +00:00
mjacob
7a95ffd839 Use correct flag in test whether this interrupt handler is fast or not.
PR:		27866
Submitted by:	Peter Jeremy <peter.jeremy@alcatel.com.au>
2001-06-04 00:52:09 +00:00
phk
b2f9beade9 Properly wrap mtx_intr_enable() macro in "do $bla while (0)" 2001-06-02 08:17:42 +00:00
gallatin
97157b4d0e Resurrect platform.pci_intr_map() and essentially undo the effects of
the interface conversion to platform.pci_intr_route().  I've left the
platform.pci_intr_route() function pointer in place, as well as
alpha_pci_route_interrupt(), but no platform currently implements it.

To work around the removal of alpha_platform_assign_pciintr(cfg);
from the pci probe code, I've hooked in calls to platform.pci_intr_map()
in pcib_read_config (similar to the x86 APIC_IO ifdef in pci_cfgregread)
for every chipset that has a platform which needs it.

While here, I've removed the interupt mapping/routing code from the
AS2x00 platform because its not required (it has never been present in
-stable).

Tested on: UP1000, Miata(GL), XP1000, AS2100, AS500
2001-06-01 17:39:11 +00:00
tmm
9ce8a62347 Clean up the code exporting interrupt statistics via sysctl a bit:
- move the sysctl code to kern_intr.c
- do not use INTRCNT_COUNT, but rather eintrcnt - intrcnt to determine
  the length of the intrcnt array
- move the declarations of intrnames, eintrnames, intrcnt and eintrcnt
  from machine-dependent include files to sys/interrupt.h
- remove the hw.nintr sysctl, it is not needed.
- fix various style bugs

Requested by:	bde
Reviewed by:	bde (some time ago)
2001-06-01 13:23:28 +00:00
gallatin
5eae83e2d8 remove unneeded #include <vm/vm_map.h> 2001-05-31 23:31:34 +00:00
gallatin
70b10bbd04 Backout previous revision. While it fixed many platforms, it broke
all alphas with devices behind ppb's.  I'm working on a better solution now.

Note that all alphas that use per-platform interrupt mapping are broken
again (as they have been for several months)
2001-05-31 21:47:25 +00:00
mjacob
f321a52b0e move wx to be part of miibus requiring chipsets 2001-05-30 03:20:52 +00:00
jhb
9a95925dcf GC #if 0'd calls to releasing and acquiring the old style giant kernel
lock.
2001-05-29 23:35:48 +00:00
phk
bad4fc51cc Remove MFS options from all example kernel configs. 2001-05-29 18:49:06 +00:00
obrien
01707e0035 One needs to introduce things with a `.file' directive before trying to
do a .loc on it.  BTW, the .loc needs to be in a .text section.
gas 2.11.0 catches these oversights where previous versions did not.
2001-05-28 09:52:21 +00:00
gallatin
e575dde359 finally fix intr routing on alphas such as the as500 after months of
breakage:

- call PCIB_ROUTE_INTERRUPT() regardless of how valid the intline looks.
  Some alphas leave garbage in the intline and leave the intr mapping
  to OS platform support routines that map slots/buses to intlines
- Down in the alpha pci code, first try platform.pci_intr_route() and
  if it doesn't exist or returns garbage, just read the intline out of
  config space.

tested on AS500 (garbage in intline) and UP1000 (PC-like, intline is valid)

Note that a nice little hack like the APIC_IO section of pci_cfgregread()
is not workable.  This is because the calling interface for
alpha_pci_route_interrupt() requires us to figure out the bus/slot/etc
from a device_t.  At pci_read_device() time, we don't have a device_t
for the bus/slot/func in question.
2001-05-27 22:22:03 +00:00
gallatin
a079453922 catch up to i386: Don't acquire Giant just to print the trap and panic 2001-05-25 21:03:40 +00:00
gallatin
2791b7af58 make this compile. 2001-05-25 20:56:28 +00:00
mjacob
ff64d076a6 track the One True Architecture (i386) 2001-05-25 20:33:06 +00:00
obrien
cb992d0918 JHB would prefer the KTR examples not be in here. 2001-05-25 18:49:08 +00:00
rwatson
f504530d9f o Merge contents of struct pcred into struct ucred. Specifically, add the
real uid, saved uid, real gid, and saved gid to ucred, as well as the
  pcred->pc_uidinfo, which was associated with the real uid, only rename
  it to cr_ruidinfo so as not to conflict with cr_uidinfo, which
  corresponds to the effective uid.
o Remove p_cred from struct proc; add p_ucred to struct proc, replacing
  original macro that pointed.
  p->p_ucred to p->p_cred->pc_ucred.
o Universally update code so that it makes use of ucred instead of pcred,
  p->p_ucred instead of p->p_pcred, cr_ruidinfo instead of p_uidinfo,
  cr_{r,sv}{u,g}id instead of p_*, etc.
o Remove pcred0 and its initialization from init_main.c; initialize
  cr_ruidinfo there.
o Restruction many credential modification chunks to always crdup while
  we figure out locking and optimizations; generally speaking, this
  means moving to a structure like this:
        newcred = crdup(oldcred);
        ...
        p->p_ucred = newcred;
        crfree(oldcred);
  It's not race-free, but better than nothing.  There are also races
  in sys_process.c, all inter-process authorization, fork, exec, and
  exit.
o Remove sigio->sio_ruid since sigio->sio_ucred now contains the ruid;
  remove comments indicating that the old arrangement was a problem.
o Restructure exec1() a little to use newcred/oldcred arrangement, and
  use improved uid management primitives.
o Clean up exit1() so as to do less work in credential cleanup due to
  pcred removal.
o Clean up fork1() so as to do less work in credential cleanup and
  allocation.
o Clean up ktrcanset() to take into account changes, and move to using
  suser_xxx() instead of performing a direct uid==0 comparision.
o Improve commenting in various kern_prot.c credential modification
  calls to better document current behavior.  In a couple of places,
  current behavior is a little questionable and we need to check
  POSIX.1 to make sure it's "right".  More commenting work still
  remains to be done.
o Update credential management calls, such as crfree(), to take into
  account new ruidinfo reference.
o Modify or add the following uid and gid helper routines:
      change_euid()
      change_egid()
      change_ruid()
      change_rgid()
      change_svuid()
      change_svgid()
  In each case, the call now acts on a credential not a process, and as
  such no longer requires more complicated process locking/etc.  They
  now assume the caller will do any necessary allocation of an
  exclusive credential reference.  Each is commented to document its
  reference requirements.
o CANSIGIO() is simplified to require only credentials, not processes
  and pcreds.
o Remove lots of (p_pcred==NULL) checks.
o Add an XXX to authorization code in nfs_lock.c, since it's
  questionable, and needs to be considered carefully.
o Simplify posix4 authorization code to require only credentials, not
  processes and pcreds.  Note that this authorization, as well as
  CANSIGIO(), needs to be updated to use the p_cansignal() and
  p_cansched() centralized authorization routines, as they currently
  do not take into account some desirable restrictions that are handled
  by the centralized routines, as well as being inconsistent with other
  similar authorization instances.
o Update libkvm to take these changes into account.

Obtained from:	TrustedBSD Project
Reviewed by:	green, bde, jhb, freebsd-arch, freebsd-audit
2001-05-25 16:59:11 +00:00
obrien
85f59ae6b9 + Turn on SMP support by default (yes an Alpha SMP kernel works on
uniprocessor systems, aren't Alpha's neat :-))
+ Add example KTR (debugging) options.
2001-05-25 10:36:46 +00:00
dfr
2434332d91 Make sure that all resource allocation is handled in the pcib device, not
the chipset. This is already how the multi-hose systems handle resource
allocation and it fixes a bug where dense and bwx memory allocations were
not handled properly.

Reviewed by: gallatin
2001-05-23 19:44:17 +00:00
gallatin
8ae035b51b catch up to i386:
- remove Giant for vm related traps
- don't hold Giant for MP safe syscalls

Reviewed-by: jhb
2001-05-23 16:34:07 +00:00
ru
35437d86aa - FDESC, FIFO, NULL, PORTAL, PROC, UMAP and UNION file
systems were repo-copied from sys/miscfs to sys/fs.

- Renamed the following file systems and their modules:
  fdesc -> fdescfs, portal -> portalfs, union -> unionfs.

- Renamed corresponding kernel options:
  FDESC -> FDESCFS, PORTAL -> PORTALFS, UNION -> UNIONFS.

- Install header files for the above file systems.

- Removed bogus -I${.CURDIR}/../../sys CFLAGS from userland
  Makefiles.
2001-05-23 09:42:29 +00:00
gallatin
8e0770e25c grab the vm mtx around exec_new_vmspace() 2001-05-22 18:45:12 +00:00
gallatin
8a5413bcc8 Change pmap_emulate_reference() so that it only touches the vm_page
flags if it is safe to do so, otherwise it will just alter the pmap state
(eg, clear the appropriate PG_FOx bits).

This gets alpha booting in the face of the vm_mtx introduction.

Reviewed by: dfr
2001-05-21 16:09:29 +00:00
gallatin
1c57c3b027 catch these files up to their i386 neighbors to make alpha boot
prior to the vm_mtx
2001-05-21 16:04:24 +00:00
gallatin
f07e923e1b fix vm_mtx related compiler warning 2001-05-20 16:41:37 +00:00
gallatin
97d9e6d553 fix alpha-MD compile errors after the vm_mtx commit 2001-05-20 16:22:46 +00:00
obrien
f536c9bfce Style changes -- revert ordering to mostly two revs ago.
Embellish some comments, fix tab'ing.

Requested by:	bde
2001-05-18 01:40:40 +00:00
jhb
59ffccfbd6 - Move the setting of bootverbose to a MI SI_SUB_TUNABLES SYSINIT.
- Attach a writable sysctl to bootverbose (debug.bootverbose) so it can be
  toggled after boot.
- Move the printf of the version string to a SI_SUB_COPYRIGHT SYSINIT just
  afer the display of the copyright message instead of doing it by hand in
  three MD places.
2001-05-17 22:28:46 +00:00
obrien
89ba5881e5 Consistently define the rune types.
Follow NetBSD's lead and add a _BSD_MBSTATE_T_ type.
2001-05-16 22:32:44 +00:00
obrien
9e804492ab Move the int typedefs to the top so they can be used in defining other types.
Ensure every platform has __offsetof.
Make multiple inclusion detection consistent with other
  <platform>/include/*.h files.
2001-05-16 22:21:43 +00:00
jhb
c87fc95350 Lock the procfs functions for doing a single step and reading/writing
registers better.  Hold sched_lock not only for checking the flag but
also while performing the actual operation to ensure the process doesn't
get swapped out by another CPU while we the operation is being performed.
2001-05-16 00:47:27 +00:00
jhb
b325e18899 "Sir, the deorbit burn completed succesfully."
RIP {sys/machine}/ipl.h.
2001-05-15 23:30:37 +00:00
jhb
3fbeaa9056 Remove unneeded includes of sys/ipl.h and machine/ipl.h. 2001-05-15 23:22:29 +00:00
joerg
b9d6a2b68d Implement a few more floppy ioctl commands and IO options, namely:
. FD_CLRERR clears the error counter, thus re-enables kernel error
  printf()s,

. FD_GSTAT obtains the last FDC operation state, if any,

. FDOPT_NOERRLOG (temporarily) turns off kernel printf() floppy
  error logging,

. FDOPT_NOERROR makes the kernel ignore an FDC error, thus can
  enable the transfer of an erroneous sector to the user application

All options are being cleared on (last) close.

Prime consumer of the last features will be fdread(1), to be committed
shortly.

(FD_CLRERR should be wired into fdcontrol(8), but then fdcontrol(8)
needs a major rewrite anyway.)
2001-05-14 20:20:11 +00:00
phk
0e2026a179 Convert DEVFS from an "opt-in" to an "opt-out" option.
If for some reason DEVFS is undesired, the "NODEVFS" option is
needed now.

Pending any significant issues, DEVFS will be made mandatory in
-current on july 1st so that we can start reaping the full
benefits of having it.
2001-05-13 20:52:40 +00:00
jhb
a3d99e2097 Simply the vm fault trap handling code a bit by using if-else instead of
duplicating code in the then case and then using a goto to jump around
the else case.
2001-05-11 23:17:54 +00:00
jhb
465be778a8 Allow sendsig() to hand the proc lock off to osendsig() rather than having
sendsig() release the lock just so it can call osendsig() and have
osendsig() acquire the lock.
2001-05-11 23:17:05 +00:00
jhb
41fc4419f3 - Split out the support for per-CPU data from the SMP code. UP kernels
have per-CPU data and gdb on the i386 at least needs access to it.
- Clean up includes in kern_idle.c and subr_smp.c.

Reviewed by:	jake
2001-05-10 17:45:49 +00:00
mjacob
a9f3e2fac8 The new order of things is that dwlpxN is now called pcibN- so hack around
*that* whilst we ponder the best way to decide how to register dwlpx interrupts
with TLSB.
2001-05-10 07:08:03 +00:00
mjacob
d739b2bcb9 add alpha_pci_route_interrupt method 2001-05-10 06:52:56 +00:00
mjacob
4626a44bc4 Quick hack to reintroduce the notion that there might be alpha platforms
without an i8254 timer/counter. This really needs to be cleaned up.
2001-05-10 05:23:58 +00:00
jhb
f72ad1a4e5 Include sys/lock.h for witness_list_locks() and axe unneeded sys/mutex.h
include.
2001-05-09 22:08:28 +00:00
markm
bcca5847d5 Undo part of the tangle of having sys/lock.h and sys/mutex.h included in
other "system" header files.

Also help the deprecation of lockmgr.h by making it a sub-include of
sys/lock.h and removing sys/lockmgr.h form kernel .c files.

Sort sys/*.h includes where possible in affected files.

OK'ed by:	bde (with reservations)
2001-05-01 08:13:21 +00:00
jhb
559e5f8890 Turn on preemption by default on the alpha arch. This also removes the
PREEMPTION kernel option.

Not objected to by:	-alpha
2001-05-01 00:19:24 +00:00
jhb
8bfdafc934 Overhaul of the SMP code. Several portions of the SMP kernel support have
been made machine independent and various other adjustments have been made
to support Alpha SMP.

- It splits the per-process portions of hardclock() and statclock() off
  into hardclock_process() and statclock_process() respectively.  hardclock()
  and statclock() call the *_process() functions for the current process so
  that UP systems will run as before.  For SMP systems, it is simply necessary
  to ensure that all other processors execute the *_process() functions when the
  main clock functions are triggered on one CPU by an interrupt.  For the alpha
  4100, clock interrupts are delievered in a staggered broadcast fashion, so
  we simply call hardclock/statclock on the boot CPU and call the *_process()
  functions on the secondaries.  For x86, we call statclock and hardclock as
  usual and then call forward_hardclock/statclock in the MD code to send an IPI
  to cause the AP's to execute forwared_hardclock/statclock which then call the
  *_process() functions.
- forward_signal() and forward_roundrobin() have been reworked to be MI and to
  involve less hackery.  Now the cpu doing the forward sets any flags, etc. and
  sends a very simple IPI_AST to the other cpu(s).  AST IPIs now just basically
  return so that they can execute ast() and don't bother with setting the
  astpending or needresched flags themselves.  This also removes the loop in
  forward_signal() as sched_lock closes the race condition that the loop worked
  around.
- need_resched(), resched_wanted() and clear_resched() have been changed to take
  a process to act on rather than assuming curproc so that they can be used to
  implement forward_roundrobin() as described above.
- Various other SMP variables have been moved to a MI subr_smp.c and a new
  header sys/smp.h declares MI SMP variables and API's.   The IPI API's from
  machine/ipl.h have moved to machine/smp.h which is included by sys/smp.h.
- The globaldata_register() and globaldata_find() functions as well as the
  SLIST of globaldata structures has become MI and moved into subr_smp.c.
  Also, the globaldata list is only available if SMP support is compiled in.

Reviewed by:	jake, peter
Looked over by:	eivind
2001-04-27 19:28:25 +00:00
gallatin
95c1741160 Make stathz match reality on platforms like the 4100 where hz!=1024
It might be more correct to make stathz as close as possible to 128,
but that would involve adding complexity to the clock intr path, which
I don't want to do.
2001-04-27 18:21:25 +00:00
jhb
8ffc16e891 Initialize p_md.md_kernnest to 1 for newly fork'd processes since they
start off in the kernel.
2001-04-26 23:52:40 +00:00
obrien
b65aa4182e Fix SCM ID's and remove tailing blanks. 2001-04-25 20:40:57 +00:00
jhb
82f8beb7b0 - Make the dumping of console messages from the secondary CPU's to the
kernel console be #ifdef DIAGNOSTIC.
- Don't set ktr_mask in release_aps().
2001-04-25 17:24:57 +00:00
gallatin
06672ba7f1 alpha_fpstate_save is fairly expensive (critical enter/exit, possibly
saves 32 registers) to do on every context switch.  This is only required
for SMP, so only do it there.

We should also look at moving the critical enter/exit out to the callers
2001-04-25 13:57:33 +00:00
jhb
7f17e1a5d9 Add a new field 'md_kernnest' to the alpha machine dependent process
structure.  This field keeps track of how many levels deep we are nested
into the kernel.  The nesting level is bumped at the start of a trap,
interrupt, syscall, or exception and is decremented on return.  This is
used to detect the case when the kernel is returning back to a kernel
context in exception_return().  If we are returning to the kernel we need
to update the globaldata pointer register saved in the stack frame in case
we have switched CPU's between taking the initial interrupt that saved the
frame and returning.  If we don't do this fixup it is possible for a CPU to
use the wrong per-cpu data.  On UP systems this is not a problem, so the
code is conditional on SMP.

A count was used instead of simply checking the process status register in
the frame during exception_return() since there are critical sections at
the very start and end of a trap, exception, or interrupt from userland in
which we could trash the t7 register being used in userland.  The counter
is incremented after adn before these critical sections respectively so
that we will not overwrite the saved t7 register if we are interrupted
during one of these critical sections.
2001-04-24 21:06:53 +00:00
mjacob
28d910ceaa fix it so it compiles again after twerpage elsewhere 2001-04-23 18:38:01 +00:00
mjacob
4222e09635 Fix includes so it compiles again. 2001-04-23 18:08:54 +00:00
gallatin
d237fa1cf5 Block out all interrupts, even machine checks, for critical_enter()
This is will be required to prevent lowering the ipl when a critical_enter()
is present in the interrupt path when handling a machine check.

reviewed by: jhb
2001-04-21 21:44:39 +00:00
gallatin
824b443645 GC some debugging code that's been #if 0'ed since we got the file from
NetBSD
2001-04-20 00:55:21 +00:00
jhb
a222601bea Convert the protection of hte i8254 from critical_enter/exit like it is
on the x86.
2001-04-18 21:47:48 +00:00
jhb
82131f7a66 Back out the previous revision as it causes random sig 11's to userland
processes until a better fix is found.

Submitted by:	gallatin
2001-04-18 17:17:55 +00:00
jhb
2a45d7c9b1 Save are floating point state in cpu_switch() if needed instead of relying
completely on lazy floating point state saving.  This is needed for the
SMP case since processes can migrate to other CPUs.

Submitted by:	dfr
2001-04-17 18:27:55 +00:00
gallatin
36a5c45998 set gd_other_cpus later, when we have a better idea what the other cpus
are.

submitted by: jhb
2001-04-17 14:59:05 +00:00
gallatin
72d859dc84 Improved support for alpha SMP. The following commit gets dual AS2100s
and AS4100s into single user mode. This work was done jointly by jhb and
myself, and builds on dfr's earlier work.

smp_init_secondary() / smp_start_secondary()
- use the uniq val to pass the globalp (me)
- fancy footwork to take any pending machine checks (me)
- doing things the FreeBSD way and getting the per-cpu idleproc created
  correctly, and synchronizing the startup of secondaries (jhb)

mp_start()
- better recognition of available cpus (jhb)

smp_rendezvous()
- if smp hasn't started, only run the rendezvous function on the current
cpu.  Sleuthing and (prior) incorrect fix by me, correct fix by jhb

smp_handle_ipi()
- more verbose handling of console messages (jhb)
- grab sched lock around setting PS_ASTPENDING (jhb)

forward_*clock()
- commented out.  Joint decision by dfr, jhb and myself

 General synchronization improvements (more mb()s, etc) (jhb)

 Printf cleanups (joint)

 Whitespace cleanups (jhb)
2001-04-17 14:55:09 +00:00
gallatin
46b69f69df Changes to support SMP:
- don't do the stack overflow sanity check on MP systems -- p->p_addr
will be malloc'ed memory (not K0SEG) and the check will fail.

- don't ignore clock interrupts on secondaries.  Alphas apparently
roundrobin clock interrupts to all cpus, so we're going to take clock
interrupts on all CPUS and not forward them.
2001-04-17 14:20:33 +00:00
gallatin
6d75f2cafd changes to smp_init_secondary_glue():
- use the unique value to save the per-cpu globalp struct like the
  comment says

- don't lower the ipl to ALPHA_PSL_IPL_HIGH: we may have a pending machine
  check to take and we're not prepared for that yet, as we haven't setup
  our interrupt entry points. (this may only happen on sable/lynx)

- indicate the fact that the working version of smp_init_secondary() doesn't
  return (this is tied up in other changes and hasn't yet been committed).
2001-04-17 14:15:12 +00:00
jhb
82848b046f Blow away the panic mutex in favor of using a single atomic_cmpset() on a
panic_cpu shared variable.  I used a simple atomic operation here instead
of a spin lock as it seemed to be excessive overhead.  Also, this can avoid
recursive panics if, for example, witness is broken.
2001-04-17 04:18:08 +00:00
jhb
3a52576aa4 - Add appropriate #ifndef/#define/#endif to protect against multiple
inclusions.
- Blow away all evidence of a static curpcb as curpcb is a per-CPU variable
  and this definition is now bogus.
2001-04-17 02:51:28 +00:00
jhb
f8ca9d2d20 - Fix memory barriers in atomic operations so that the barriers are always
"inside" of locked regions.  That is, an acquire atomic operation will
  always enforce a memory barrier after the atomic operation and a release
  operation will always enforce a memory barrier before the atomic
  operation.
- Explicitly use 'mb' instead of 'wmb' in release atomic operations.  The
  'wmb' memory barrier is not strong enough to guarantee coherence with
  other processors.  This is effectively a nop since alpha_wmb() actually
  performs a 'mb' and not a 'wmb', but I wanted the code to be more
  correct since at some point in the future alpha_wmb()'s implementation
  may switch to being a real 'wmb'.
2001-04-17 02:50:05 +00:00
jhb
9a897f4887 Add a cpu_throw() function that secondary CPU's can use for their first
context switch.
2001-04-17 02:46:13 +00:00
jhb
16fab762d5 In exception_return(), test for usermode before testing the IPL to see if
we should call ast().  This allows us to branch to a separate Lkernelret
label so we can fixup the saved t7 register in the trapframe.  Otherwise
we can run into a problem on SMP systems where a process is interrupted by
a trap or interrupt on one CPU, migrates to another CPU, and then returns
with the t7 in the stack clobbering the CPU's t7.  As a result, two CPU's
would both point to the same per-CPU data and things would go downhill from
there.

Sleuthing help by:	gallatin
2001-04-17 02:44:35 +00:00
jhb
da16744cc0 - Stop other CPU's in the SMP case when we enter ddb.
- Add a new ddb command: 'show pcpu' similar to the i386 command added
  recently.  By default it displays the current CPU's info, but an optional
  argument can specify the logical ID of a specific CPU to examine.
2001-04-17 02:41:41 +00:00
obrien
c7790304de Turn on kernel debugging support (DDB, INVARIANTS, INVARIANT_SUPPORT, WITNESS)
by default while SMPng is still being developed.

Submitted by:	jhb
2001-04-15 19:37:28 +00:00
jhb
4dd39ab878 Rename the IPI API from smp_ipi_* to ipi_* since the smp_ prefix is just
"redundant noise" and to match the IPI constant namespace (IPI_*).

Requested by:	bde
2001-04-11 17:06:02 +00:00
jhb
fbaa8935ec Parse the various argument registers in the printtrap() function so that
one doesn't have to go grab a reference manual to decode them by hand every
time the alpha kernel falls over.

Reviewed by:	drew, -alpha
2001-04-11 16:20:11 +00:00
gallatin
35ffa3254c insert a magical second memory barrier prior to calling draina() in
badaddr_read().  This fixes 'machine check in pal mode' halts on
ev5 2100As.

MFC candidate -- after spending 6 hours tracking this down, I checked and
discovered that it has been in NetBSD for over a year, so it should be safe
for MFC into 4.3-RELEASE
2001-04-08 16:43:59 +00:00
gallatin
ba67d5732f Regen after adding linux_sched_get_priority_max() and
linux_sched_get_priority_min()
2001-04-03 18:01:41 +00:00
gallatin
40313aa944 Add linux_sched_get_priority_max() and linux_sched_get_priority_min() to
alpha md code & unbreak kernel build
2001-04-03 17:58:44 +00:00
gallatin
52dacf6017 Recognize a few newer cpus (pca57, ev67 & ev68) and update systypes to
include "CUSCO" and "Eiger" while I'm at it.
2001-03-30 22:04:08 +00:00
obrien
926a83f21a Removed the ``#if 0'' that turned bounds_check_with_label() into worse
than a NOP.  bounds_check_with_label() would return -1 yet NOT set any
of the bio flags to show an error.  This meant the caller would not
properly see that bounds_check_with_label() did not do any work.  This
prevented newfs(8) from being able to write a file system on any partition
other than `c' on a `ccd'.

The logs of this file do not tell _why_ bounds_check_with_label() was
emasculated.  Nor are there any `XXX' comments.  So we'll unemasculated
it, and see what breaks.

Submitted by:	gallatin
2001-03-29 20:18:45 +00:00
gallatin
a4de9511b5 resurrect the declaration of order to unbreak kernel build. Put
it inside the ifdef so as to avoid unused variable warnings
2001-03-28 19:02:08 +00:00
jhb
79cf991a6b Convert the allproc and proctree locks from lockmgr locks to sx locks. 2001-03-28 11:52:56 +00:00
jhb
b47bfbe544 Catch up to header include changes:
- <sys/mutex.h> now requires <sys/systm.h>
- <sys/mutex.h> and <sys/sx.h> now require <sys/lock.h>
2001-03-28 09:17:56 +00:00
jhb
0c490fd02e Rework the witness code to work with sx locks as well as mutexes.
- Introduce lock classes and lock objects.  Each lock class specifies a
  name and set of flags (or properties) shared by all locks of a given
  type.  Currently there are three lock classes: spin mutexes, sleep
  mutexes, and sx locks.  A lock object specifies properties of an
  additional lock along with a lock name and all of the extra stuff needed
  to make witness work with a given lock.  This abstract lock stuff is
  defined in sys/lock.h.  The lockmgr constants, types, and prototypes have
  been moved to sys/lockmgr.h.  For temporary backwards compatability,
  sys/lock.h includes sys/lockmgr.h.
- Replace proc->p_spinlocks with a per-CPU list, PCPU(spinlocks), of spin
  locks held.  By making this per-cpu, we do not have to jump through
  magic hoops to deal with sched_lock changing ownership during context
  switches.
- Replace proc->p_heldmtx, formerly a list of held sleep mutexes, with
  proc->p_sleeplocks, which is a list of held sleep locks including sleep
  mutexes and sx locks.
- Add helper macros for logging lock events via the KTR_LOCK KTR logging
  level so that the log messages are consistent.
- Add some new flags that can be passed to mtx_init():
  - MTX_NOWITNESS - specifies that this lock should be ignored by witness.
    This is used for the mutex that blocks a sx lock for example.
  - MTX_QUIET - this is not new, but you can pass this to mtx_init() now
    and no events will be logged for this lock, so that one doesn't have
    to change all the individual mtx_lock/unlock() operations.
- All lock objects maintain an initialized flag.  Use this flag to export
  a mtx_initialized() macro that can be safely called from drivers.  Also,
  we on longer walk the all_mtx list if MUTEX_DEBUG is defined as witness
  performs the corresponding checks using the initialized flag.
- The lock order reversal messages have been improved to output slightly
  more accurate file and line numbers.
2001-03-28 09:03:24 +00:00
jhb
3e3a661612 Switch from save/disable/restore_intr() to critical_enter/exit(). 2001-03-28 03:06:10 +00:00
jhb
4572ff9c78 - Switch from using save/disable/restore_intr to using critical_enter/exit
and change the u_int mtx_saveintr member of struct mtx to a critical_t
  mtx_savecrit.
- On the alpha we no longer need a custom _get_spin_lock() macro to avoid
  an extra PAL call, so remove it.
- Partially fix using mutexes with WITNESS in modules.  Change all the
  _mtx_{un,}lock_{spin,}_flags() macros to accept explicit file and line
  parameters and rename them to use a prefix of two underscores.  Inside
  of kern_mutex.c, generate wrapper functions for
  _mtx_{un,}lock_{spin,}_flags() (only using a prefix of one underscore)
  that are called from modules.  The macros mtx_{un,}lock_{spin,}_flags()
  are mapped to the __mtx_* macros inside of the kernel to inline the
  usual case of mutex operations and map to the internal _mtx_* functions
  in the module case so that modules will use WITNESS and KTR logging if
  the kernel is compiled with support for it.
2001-03-28 02:40:47 +00:00
jhb
3e4166569d - Add the new critical_t type used to save state inside of critical
sections.
- Add implementations of the critical_enter() and critical_exit() functions
  and remove restore_intr() and save_intr().
- Remove the somewhat bogus disable_intr() and enable_intr() functions on
  the alpha as the alpha actually uses a priority level and not simple bit
  flag on the CPU.
2001-03-28 02:31:54 +00:00
jhb
58d30ccb09 Revert previous commit which had a bogus message. It actually just
disabled the somewhat annoying KTR log trace for clock interrupts.
2001-03-28 02:03:29 +00:00
jhb
8106ecf771 - Include <machine/prom.h> to get the prototype for prom_halt().
- If there is no gdb device, just return without trying to return any
  value since gdb_handle_exception() returns void.
- When calling prom_halt(), pass in a value telling it to actually halt
  and not to randomly choose whether or not to halt or reboot depending on
  whatever value happened to be in a0 when the call was made.
2001-03-28 01:54:06 +00:00
gallatin
bffff76146 Check whether we need to do a full restore after handling ASTs. If
an AST results in a signal being delivered, we'll need to do a full register
restore so as to properly setup the signal handler.  This is somewhat of
a pessimization, because ast() will be called twice in this case.

This fixes several problems that have been reported where signal intensive
userland apps (most notably dump) have been SEGV'ing for no fault of their
own.

Thanks to Peter Jeremy <peter.jeremy@alcatel.com.au> for presenting the
AST scenario which led to me fiinally figuring this out.

Reviewed by: jhb
2001-03-28 01:19:41 +00:00
phk
c47745e977 Send the remains (such as I have located) of "block major numbers" to
the bit-bucket.
2001-03-26 12:41:29 +00:00
ume
d26371de82 Unbreak build on alpha.
- Move in_port_t to sys/types.h.
  - Nuke in_addr_t from each endian.h.

Reported by:	jhb
2001-03-24 15:17:27 +00:00
tmm
76ba4861cd Export intrnames and intrcnt as sysctls (hw.nintr, hw.intrnames and
hw.intrcnt).

Approved by:	rwatson
2001-03-23 03:45:17 +00:00
peter
670e711dd1 Use a generic implementation of the Fowler/Noll/Vo hash (FNV hash).
Make the name cache hash as well as the nfsnode hash use it.

As a special tweak, create an unsigned version of register_t.  This allows
us to use a special tweak for the 64 bit versions that significantly
speeds up the i386 version (ie: int64 XOR int64 is slower than int64
XOR int32).

The code layout is a little strange for the string function, but I was
able to get between 5 to 10% improvement over the original version I
started with. The layout affects gcc code generation choices and this way
was fastest on x86 and alpha.

Note that 'CPUTYPE=p3' etc makes a fair difference to this.  It is
around 45% faster with -march=pentiumpro on a p6 cpu.
2001-03-17 09:31:06 +00:00
gallatin
4ce4255f83 prevent gdb from panic'ing an alpha with "mutex Giant not owned"
reviewed by: jhb
2001-03-16 21:44:21 +00:00
gallatin
1e1aef3713 remove bogus check -- for kernel threads we fork off of proc0, not curproc
This was causing panics when modules which create kthreads were loaded
after boot.

pointed out by: jake, jhb
2001-03-15 02:32:26 +00:00
jhb
b3ef374c76 - Call fork1() directly instead of calling rfork() so that it doesn't mask
out RFSTOPPED.
- Lock the child process when settings p_sigparent instead of locking the
  parent.

Pointy-hat to:	me
2001-03-11 23:41:55 +00:00
jhb
f108bc4208 Fix mtx_legal2block. The only time that it is bad to block on a mutex is
if we hold a spin mutex, since we can trivially get into deadlocks if we
start switching out of processes that hold spinlocks.  Checking to see if
interrupts were disabled was a sort of cheap way of doing this since most
of the time interrupts were only disabled when holding a spin lock.  At
least on the i386.  To fix this properly, use a per-process counter
p_spinlocks that counts the number of spin locks currently held, and
instead of checking to see if interrupts are disabled in the witness code,
check to see if we hold any spin locks.  Since child processes always
start up with the sched lock magically held in fork_exit(), we initialize
p_spinlocks to 1 for child processes.  Note that proc0 doesn't go through
fork_exit(), so it starts with no spin locks held.

Consulting from:	cp
2001-03-09 07:24:17 +00:00
jhb
1de39ad1a0 Unrevert the pmap_map() changes. They weren't broken on x86.
Sense beaten into me by:	peter
2001-03-07 05:29:21 +00:00
jhb
9c1fb038d7 - Release Giant a bit earlier on syscall exit.
- Don't try to grab Giant before postsig() in userret() as it is no longer
  needed.
- Don't grab Giant before psignal() in ast() but get the proc lock instead.
2001-03-07 03:53:39 +00:00
jhb
9cd254601b Grab the process lock while calling psignal and before calling psignal. 2001-03-07 03:37:06 +00:00
jhb
83d74ad162 Use the proc lock to protect p_pptr when waking up our parent in cpu_exit()
and remove the mpfixme() message that is now fixed.
2001-03-07 03:20:15 +00:00
jhb
9862451770 Just use proc lock to protect reading of p_pptr rather than a proctree
lock.
2001-03-07 03:18:36 +00:00
jhb
74a74a3282 Back out the pmap_map() change for now, it isn't completely stable on the
i386.
2001-03-07 01:04:17 +00:00
jhb
a710dd7194 - Rework pmap_map() to take advantage of direct-mapped segments on
supported architectures such as the alpha.  This allows us to save
  on kernel virtual address space, TLB entries, and (on the ia64) VHPT
  entries.  pmap_map() now modifies the passed in virtual address on
  architectures that do not support direct-mapped segments to point to
  the next available virtual address.  It also returns the actual
  address that the request was mapped to.
- On the IA64 don't use a special zone of PV entries needed for early
  calls to pmap_kenter() during pmap_init().  This gets us in trouble
  because we end up trying to use the zone allocator before it is
  initialized.  Instead, with the pmap_map() change, the number of needed
  PV entries is small enough that we can get by with a static pool that is
  used until pmap_init() is complete.

Submitted by:		dfr
Debugging help:		peter
Tested by:		me
2001-03-06 06:06:42 +00:00
jhb
56db3fe70f Create clone'd linux processes as stopped processes at first and don't
actually make them runnable until after the emulator layer has had a chance
to perform fixups.
2001-03-06 02:59:46 +00:00
jhb
d2412f5103 Quiet a warning due to bus_size_t being a long on the alpha. 2001-03-06 02:52:06 +00:00
gallatin
879f1f29f6 handle reserved/unimplemented instruction (opDec) faults
This lets us run programs containing newer (eg bwx) instructions
on older (eg EV5 and less) machines.  One win is that we can
now run Acrobat4 on EV4s and EV5s.

Obtained from: NetBSD
Glanced at by: mjacob
2001-03-05 21:21:01 +00:00
gallatin
85742c3ae3 Add MODULE_DEPEND() for the sysvipc modules. This allows the linulator
to load when sysvipc is not in the kernel

Reported by: naddy@mips.inka.de (Christian Weisgerber)
2001-03-05 17:59:18 +00:00
gallatin
82bcd89266 sync with i386:
MFS: bring the consistent `compat_3_brand' support

This should fix the linux-related panics reported
by naddy@mips.inka.de (Christian Weisgerber)

Forgotten by: obrien
2001-03-05 17:56:58 +00:00
gallatin
748e026d90 Fix the unaligned access code to handle stores from R31 (zero)
PR alpha/25535
2001-03-05 16:18:23 +00:00
dfr
430eceb8a5 Disable interrupts while sanity checking the owner of the floating point
state. It is possible that we could be preempted part way through the
check.
2001-03-04 23:29:23 +00:00
dfr
dd8ce5c6ba Account for the new flags field in struct trapframe. 2001-03-03 15:11:37 +00:00
jhb
5eea0dc69d Rename switch_trampoline() to fork_trampoline() on the alpha and ia64.
Suggested by:	dfr
2001-02-22 16:56:53 +00:00
jhb
667eb173f1 - Use TRAPF_PC() on the alpha to acess the PC in the trap frame.
- Don't hold sched_lock around addupc_task() as this apparently breaks
  profiling badly due to sched_lock being held across copyin().

Reported by:	bde (2)
2001-02-22 16:23:12 +00:00
jhb
41a6853d24 GC unused and now obsolete assertion macros. 2001-02-22 15:45:49 +00:00
jhb
202f41c3e5 Cleanup and clarify the comments above switch_trampoline(). 2001-02-22 15:06:19 +00:00
jhb
4f27bdda0e Remove attempt to add in PREEMPTION #ifdef test in MI code that didn't
work because opt_preemption.h wasn't #include'd.  Instead, make use of the
do_switch parameter to ithread_schedule() and do the check in the alpha
interrupt code.
2001-02-21 22:51:00 +00:00
gallatin
bb9ee8e09f Fix the osfulator in the face of Doug's optimized system call return path.
We now need to set [FRAME_FLAGS] to zero to force a full restore of state
after a signal.

reported by: naddy@mips.inka.de (Christian Weisgerber)
2001-02-21 18:48:06 +00:00
jhb
ca00514d9e - Add a new ithread_schedule() function to do the bulk of the work of
scheduling an interrupt thread to run when needed.  This has the side
  effect of enabling support for entropy gathering from interrupts on
  all architectures.
- Change the software interrupt and x86 and alpha hardware interrupt code
  to use ithread_schedule() for most of their processing when scheduling
  an interrupt to run.
- Remove the pesky Warning message about interrupt threads having entropy
  enabled.  I'm not sure why I put that in there in the first place.
- Add more error checking for parameters and change some cases that
  returned EINVAL to panic on failure instead via KASSERT().
- Instead of doing a documented evil hack of setting the P_NOLOAD flag
  on every interrupt thread whose pri was SWI_CLOCK, set the flag
  explicity for clk_ithd's proc during start_softintr().
2001-02-20 10:25:29 +00:00
jhb
27efeb0d30 - Don't call clear_resched() in userret(), instead, clear the resched flag
in mi_switch() just before calling cpu_switch() so that the first switch
  after a resched request will satisfy the request.
- While I'm at it, move a few things into mi_switch() and out of
  cpu_switch(), specifically set the p_oncpu and p_lastcpu members of
  proc in mi_switch(), and handle the sched_lock state change across a
  context switch in mi_switch().
- Since cpu_switch() no longer handles the sched_lock state change, we
  have to setup an initial state for sched_lock in fork_exit() before we
  release it.
2001-02-20 05:26:15 +00:00
gallatin
13f0b0408b Regen 2001-02-20 03:48:53 +00:00
gallatin
779d4e2c1a Sort out the umount breakage introduced in the last 2 revisions.
Please note:
When committing changes to this file, it is important to note that
linux is not freebsd -- their system call numbers (and sometimes names)
are different on different platforms.  When in doubt (and you always need
to be) check the arch-specific unistd.h and entry.S files in the linux
kernel sources to see what the syscall numbers really are.
2001-02-20 03:47:59 +00:00
jlemon
fec704719a Regenerate. 2001-02-20 02:16:38 +00:00
jlemon
a53edc4984 Fix duplicate linux_mount definition 2001-02-20 02:16:07 +00:00
bde
49ef1aaa13 Changed the aston() family to operate on a specified process instead of
always on curproc.  This is needed to implement signal delivery properly
(see a future log message for kern_sig.c).

Debogotified the definition of aston().  aston() was defined in terms
of signotify() (perhaps because only the latter already operated on
a specified process), but aston() is the primitive.

Similar changes are needed in the ia64 versions of cpu.h and trap.c.
I didn't make them because the ia64 is missing the prerequisite changes
to make astpending and need_resched per-process and those changes are
too large to make without testing.
2001-02-19 04:15:59 +00:00
ume
e4a288b688 Correct disordering which is corresponding to bde's fix to
i386/include/ansi.h.
2001-02-17 14:51:11 +00:00
jlemon
8c0f93bb9b Allow debugging output to be controlled on a per-syscall granularity.
Also clean up debugging output in a slightly more uniform fashion.

The default behavior remains the same (all debugging output is turned on)
2001-02-16 16:40:43 +00:00
jlemon
717f1e459e Re-gen auto generated files. 2001-02-16 14:47:24 +00:00
jlemon
fd27a8db25 Remove dummy stub functions. 2001-02-16 14:46:16 +00:00
jlemon
065a73369e Add mount syscall to linux emulation. Also improve emulation of reboot. 2001-02-16 14:42:11 +00:00
ume
bf66c2eda8 Correct 2nd argument of getnameinfo(3) to socklen_t.
Reviewed by:	itojun
2001-02-15 10:35:55 +00:00
mjacob
7e987d1dff Doug found that doing a W1C on MCPCIA_INT_REQ just around the time you
clear MCPCIA_INT_MASK0 helps things substantially. So, why not indeed?

Rearrange irq and cookie calculation to use shifts/masks instead
of division. Fix things to correctly remember the intpin for that
one in a million non-INTA PCI device.
2001-02-13 22:48:12 +00:00
mjacob
3651ee3457 add defines for EISA, NCR IRQs; add defines for MID and SLOT shift values 2001-02-13 22:46:30 +00:00
mjacob
7af01441d3 add mcbus minimum id value 2001-02-13 22:45:53 +00:00
mjacob
b31e6b9052 Doug noticed that the bit values for _MCPCIA_INT_ACK0/_MCPCIA_INT_ACK1
made no sense in the context of wrapping them within the _SYBRIDGE macro-
or anything like it- so we concluded that this must have been a typo
in the docs.  This also doesn't use the same bridge offset as anything
else.

Add some defines for the INT_CTL register.
2001-02-13 22:44:21 +00:00