Commit Graph

9716 Commits

Author SHA1 Message Date
Bruce Evans
a67ef0a77a Don't implement anything in the ffs family in <machine/cpufunc.h>
in the non-_KERNEL case.  This "fixes" applications that include
this "kernel-only" header and also include <strings.h> (or get
<strings.h> via the default _BSD_VISIBLE pollution in <string.h>.
In C++ there was a fatal error: the declaration specifies C linkage
but the implementation gives C++ linkage.  In C there was only a
static/extern mismatch if the headers were included in a certain order
order, and a partially redundant declaration for all include orders;
gcc emits incomplete or wrong diagnostics for these, but only for
compiling with -Wsystem-headers and certain other warning options, so
the problem was usually not seen for C.

Ports breakage reported by:	kris
2004-03-11 13:38:54 +00:00
Marcel Moolenaar
cd5cb01152 Remove stale or broken call to kdb_trap() and protected by the non-
option KDB. Besides being wrong, it also interferes with ongoing
work.
2004-03-11 00:17:45 +00:00
Alan Cox
5d328ed44b - Make the acquisition of Giant in vm_fault_unwire() conditional on the
pmap.  For the kernel pmap, Giant is not required.  In general, for
   other pmaps, Giant is required by i386's pmap_pte() implementation.
   Specifically, the use of PMAP2/PADDR2 is synchronized by Giant.
   Note: In principle, updates to the kernel pmap's wired count could be
   lost without Giant.  However, in practice, we never use the kernel
   pmap's wired count.  This will be resolved when pmap locking appears.
 - With the above change, cpu_thread_clean() and uma_large_free() need
   not acquire Giant.  (The first case is simply the revival of
   i386/i386/vm_machdep.c's revision 1.226 by peter.)
2004-03-10 04:44:43 +00:00
John Birrell
0b3ffb77f1 Remove duplicate code.
Requested by: bde
2004-03-09 20:53:01 +00:00
John Birrell
9ee4b048ae Add #ifdef CPU_SOEKRIS in the missing places around the led_* code
that is specific to those boards.

This allows this file to compile again with CPU_ELAN enabled, but not
CPU_SOEKRIS, for a Compulab board.
2004-03-09 02:51:21 +00:00
John Birrell
15afc798fd AMD's ELAN documentation says that you write to the SYS_RST register
in the Memory Mapped Configuration Region (MMCR) to reset the CPU.
If CPU_ELAN is set, try this first to reset the CPU before the
traditional way.

Without this change, my Compulab board powers down on 'reset' instead
of rebooting.
2004-03-09 02:49:24 +00:00
Peter Wemm
ec4a10ee26 Add back Giant locks around kmem_free() call from user_ldt cleanup path
during exit.  Apparently it isn't safe after all.  See uma_large_free().

Pointed out by:  alc
2004-03-08 01:55:34 +00:00
Peter Wemm
b8f8da5d90 Other parts of the tree do not protect calls to kmem_free() with Giant,
so remove it from here.  The most notable examples include vm_mmap().
This removes one more Giant event from exit(2).
2004-03-08 00:27:33 +00:00
Alan Cox
fcffa790e9 Retire pmap_pinit2(). Alpha was the last platform that used it. However,
ever since alpha/alpha/pmap.c revision 1.81 introduced the list allpmaps,
there has been no reason for having this function on Alpha.  Briefly,
when pmap_growkernel() relied upon the list of all processes to find and
update the various pmaps to reflect a growth in the kernel's valid
address space, pmap_init2() served to avoid a race between pmap
initialization and pmap_growkernel().  Specifically, pmap_pinit2() was
responsible for initializing the kernel portions of the pmap and
pmap_pinit2() was called after the process structure contained a pointer
to the new pmap for use by pmap_growkernel().  Thus, an update to the
kernel's address space might be applied to the new pmap unnecessarily,
but an update would never be lost.
2004-03-07 21:06:48 +00:00
Alan Cox
925d2fedf5 Remove unused declarations. (Some time ago, these variables became fields
of vm/vm.h's struct kva_md_info.)
2004-03-07 07:13:15 +00:00
Scott Long
651c6c7b3d Remove the phantom 'nv' driver again. 2004-03-06 06:54:54 +00:00
Bruce Evans
39f0cfa27b Fixed insertion sort errors in prototype list. 2004-03-05 15:30:40 +00:00
Bruce Evans
83f1e7f9f4 Removed garbage:
- completely unused things
- all of rev.1.102 (C++ support).  <sys/cdefs.h> is included by the
  prerequisite <sys/types.h>.  __BEGIN_DECLS/__END_DECLS has no effect
  (except possibly if undefined behaviour is invoked using a hack like
  defining away __inline) since this header doesn't really support any
  extern functions.
2004-03-05 15:22:05 +00:00
Bruce Evans
e8829b6115 Include <machine/psl.h> for the definition of PSL_I instead of depending
on namespace pollution in <machine/cpufunc.h>.
2004-03-05 14:23:13 +00:00
Lukas Ertl
1bcf24ee9d Fix syntax errors and wrong function prototypes in several MD header
files when using non-GNUC compilers.

PR:             kern/58515
Submitted by:   Stefan Farfeleder <stefan@fafoe.narf.at>
Approved by:    grog (mentor), obrien
2004-03-05 09:19:59 +00:00
David E. O'Brien
5af2e7de06 Document that ENABLE_ALART controls the alarm on Intel intpm driver.
Submitted by:	peter
2004-03-05 08:04:10 +00:00
Roman Kurakin
1d9c6a4865 Add ctau (Cronyx/Tau-ISA) device driver entry.
Approved by:	imp (mentor)
2004-03-03 12:43:59 +00:00
Scott Long
e38ea2819f Finish the removal of the 'nv' device reference. 2004-03-03 07:16:42 +00:00
David E. O'Brien
1a092ee3b8 Opps, nv(4) isn't committed yet. Comment out. 2004-03-03 07:09:40 +00:00
Nate Lawson
2a5644e928 Finish fixing style problems in my previous commit.
Pointed out by: 	bde
2004-03-03 05:51:48 +00:00
Bruce Evans
18b6a3bf87 In the descrption of network interfaces:
- use consistent formatting (no tabs)
- improved wording for cx and oltr.
2004-03-03 05:26:03 +00:00
Nate Lawson
3184cf5a6b Add support for quirks for acpi tables. Key off OEM vendor and revision.
Sort acpi debug values.  Change "disable" to "disabled" to match rest of
the kernel.  Remove debugging from acpi_toshiba since it was only used for
probe/attach.
2004-03-03 03:02:17 +00:00
David E. O'Brien
0a5df651a6 Whitespace fixes. 2004-03-02 19:15:13 +00:00
Nate Lawson
c58375c3a5 Add the ACPI standard video extensions driver. I've done some style cleanup
but a bit more reamins to be done.  For now, it is usable.

Submitted by:	Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>
2004-03-01 08:12:56 +00:00
Maxim Konovalov
16c36bbe5d o Typo: Ternal -> Thermal. 2004-02-29 18:30:35 +00:00
Poul-Henning Kamp
961af6677b Add support for the watchdog in Geode SC1100 which is used in embedded
systems like the Soekris NET4801
2004-02-28 22:33:28 +00:00
Poul-Henning Kamp
3e2c971172 Add a generic watchdog facility which through a single device entry
in /dev controls all available watchdog implementations.
2004-02-28 20:06:59 +00:00
Poul-Henning Kamp
1b4a8b8cfc Add support for /dev/led/error on Soekris Net4801. 2004-02-28 13:15:53 +00:00
Bruce Evans
aa5191aa75 Fixed the latest unsortings of CPU_ENABLE_*. 2004-02-24 04:18:07 +00:00
Maxim Sobolev
fab1e69d80 Add missed CPU_ENABLE_LONGRON.
Submitted by:	Jon Noack <noackjr@alumni.rice.edu>
2004-02-23 14:49:15 +00:00
Poul-Henning Kamp
dc08ffec87 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
Poul-Henning Kamp
8e1f1df080 Device megapatch 3/6:
Add missing D_TTY flags to various drivers.

Complete asserts that dev_t's passed to ttyread(), ttywrite(),
ttypoll() and ttykqwrite() have (d_flags & D_TTY) and a struct tty
pointer.

Make ttyread(), ttywrite(), ttypoll() and ttykqwrite() the default
cdevsw methods for D_TTY drivers and remove the explicit initializations
in various drivers cdevsw structures.
2004-02-21 20:41:11 +00:00
Poul-Henning Kamp
c9c7976f7f Device megapatch 1/6:
Free approx 86 major numbers with a mostly automatically generated patch.

A number of strategic drivers have been left behind by caution, and a few
because they still (ab)use their major number.
2004-02-21 19:42:58 +00:00
John Baldwin
ccab16610b Add back an include to fix the build for the CPU_ELAN case. 2004-02-19 18:34:26 +00:00
John Baldwin
77fa00fa7c Switch to using the new $PIR interrupt routing code and remove the old
code.  The pci_cfgreg.c file now just controls reading/writing PCI config
registers.
2004-02-18 22:41:53 +00:00
John Baldwin
2e41ba54d6 Rework the $PIR (aka PCIBIOS) PCI interrupt routing code and split it off
into its own file:
- All of the $PIR interrupt routing is now done in a link-centric fashion.
  When a host-PCI bridge that uses the $PIR attaches, it calls pir_parse()
  to parse the table.  This scans for link devices and merges all the masks
  for each link device from the table entries.  It then looks at the intline
  register of PCI devices connected to a link to figure out if the BIOS has
  routed this link and if so to which IRQ.
- The IRQ for any given link can be overridden via a hint like so:
  'hw.pci.link.0x62.irq=10'  Any IRQ set in this matter is treated as if it
  were set that way by the BIOS.
- We only call the BIOS to route each link device once.
- When a PCI device wants to route an interrupt, we look it up in the $PIR
  to find the associated link.  If the link is routed, we simply return the
  IRQ it is using.  If it is not routed, we have to pick one.  This uses a
  different algorithm from the old code.  First off, when we try to pick
  an interrupt from a mask of possible interrupts, we try to pick the one
  that is least loaded as far as PCI devices.  We maintain this weight based
  on the number of devices attached to each link device.  When choosing an
  IRQ, we first attempt to route using any PCI only interrupts (the old
  code did this as well).  If that doesn't work, we try to use the list of
  IRQs that the BIOS has used.  This is a new step that the new code didn't
  do and avoids using IRQ 3 or 4 for every virgin interrupt routing.  If
  none of the IRQs that the BIOS used worked, then we fall back to trying
  anything.
- The fallback mask for !PC98 was fixed to include IRQ 3 and not allow IRQ
  2.
- We don't use the $PIR to route interrupts on a PCI-PCI bridge unless it
  has already been used to route on at least one Host-PCI bridge.  This
  helps to avoid mixing and matching x86 firmware PCI interrupt routing
  methods (which is a Bad Thing(tm)).

Silence on:	current@
2004-02-18 22:40:23 +00:00
Bruce Evans
1203f5be25 Fixed a misplaced ifdef that prevented npx.c building without "device isa"
ISA.  npx has few isa dependencies, but it does unconditional outb()'s to
the isa bus in the !SMP case, and it attaches to isa if "device isa" is
configured in order to support PNP-ISA.  The ifdef for the latter was
misplaced.

PR:		62595
2004-02-13 18:04:51 +00:00
John Baldwin
28596eb0ea Regen. 2004-02-06 20:21:18 +00:00
John Baldwin
44c99fac14 Sync up MP safe flags with global syscalls.master. This includes write(),
close(), getpid(), ibcs2_setuid(), getuid(), ptrace(), ibcs2_pause(),
ibcs2_nice(), ibcs2_kill(), ibcs2_pgrpsys(), dup(), pipe(), ibcs2_setgid(),
getgid(), umask(), and sigreturn().
2004-02-06 20:20:07 +00:00
Alexander Kabaev
dec8868dcc Rename cn_unavailable to cnunavailable for little more consistency.
Garbage collect unused cndebug() function.

Suggested by:	bde
2004-02-05 17:35:28 +00:00
Roman Kurakin
6f97087e27 Updates cx driver information (Cronyx-Sigma)
Approved by:	imp (mentor)
2004-02-05 13:02:14 +00:00
Peter Pentchev
f7644f46f0 Fix a typo in kan's last commit: cnavaiable() -> cnavailable() 2004-02-05 10:02:20 +00:00
Alexander Kabaev
e99c09e2dc Eliminate global cons_unavailable flag and replace it by the status
bit maintained on a per-device basis. Single variable is inadequate
on machines running with multiple consoles enabled.
2004-02-05 01:56:43 +00:00
John Baldwin
0804ed5acc Regen. 2004-02-04 22:00:44 +00:00
John Baldwin
c3b612d935 The following compat syscalls are now mpsafe: linux_getrlimit(),
linux_setrlimit(), linux_old_getrlimit(), osf1_getrlimit(),
osf1_setrlimit(), svr4_sys_ulimit(), svr4_sys_setrlimit(),
svr4_sys_getrlimit(), svr4_sys_setrlimit64(), svr4_sys_getrlimit64(),
ibcs2_sysconf(), and ibcs2_ulimit().
2004-02-04 21:57:00 +00:00
John Baldwin
91d5354a2c Locking for the per-process resource limits structure.
- struct plimit includes a mutex to protect a reference count.  The plimit
  structure is treated similarly to struct ucred in that is is always copy
  on write, so having a reference to a structure is sufficient to read from
  it without needing a further lock.
- The proc lock protects the p_limit pointer and must be held while reading
  limits from a process to keep the limit structure from changing out from
  under you while reading from it.
- Various global limits that are ints are not protected by a lock since
  int writes are atomic on all the archs we support and thus a lock
  wouldn't buy us anything.
- All accesses to individual resource limits from a process are abstracted
  behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return
  either an rlimit, or the current or max individual limit of the specified
  resource from a process.
- dosetrlimit() was renamed to kern_setrlimit() to match existing style of
  other similar syscall helper functions.
- The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit()
  (it didn't used the stackgap when it should have) but uses lim_rlimit()
  and kern_setrlimit() instead.
- The svr4 compat no longer uses the stackgap for resource limits calls,
  but uses lim_rlimit() and kern_setrlimit() instead.
- The ibcs2 compat no longer uses the stackgap for resource limits.  It
  also no longer uses the stackgap for accessing sysctl's for the
  ibcs2_sysconf() syscall but uses kernel_sysctl() instead.  As a result,
  ibcs2_sysconf() no longer needs Giant.
- The p_rlimit macro no longer exists.

Submitted by:	mtm (mostly, I only did a few cleanups and catchups)
Tested on:	i386
Compiled on:	alpha, amd64
2004-02-04 21:52:57 +00:00
John Baldwin
7a9d7023a2 Revert the skipping of segment register reloads as it appears to actually
be a pessimization on non Pentium4 CPUs.  More importantly, it is buggy as
it can cause GPF's when using APM or vm86.
2004-02-03 22:00:42 +00:00
Bruce Evans
ab2bf9ff6a Removed bogus checks that (PCPU_GET(curpcb) != NULL). Rev.1.586 of
machdep.c fixed the missing early initialization of curpcb, so curpcb
is now always set together with curthread and it cannot be NULL except
before the IDT has been set up (so trap() is unreachable) or after a
memory error.  In any case, it was often used without checking.

curcpb shouldn't exist anyway.  It doesn't exist for most non-i386 arches.
It just caches curthread->td_pcb in a global.  This was a better idea
before it was per-cpu.  trap() and some other places can get at it more
efficiently using td->td_pcb instead of PCPU_GET(curpcb).  The main
exception is support.s which mostly wants only curpcb->pcb_onfault.
2004-02-03 06:35:29 +00:00
John Baldwin
b71aa5f5e9 Set PCPU_GET(curpcb) for the BSP to thread0's pcb. Otherwise, the boot CPU
doesn't have a pcb until after it's first context switch.  This can cause
secondary panics if a page fault happens during bootup.
2004-02-02 23:22:24 +00:00
Jeff Roberson
fe5efaede8 - Make sure the apic is idle before sending an IPI. This is required on
non-X-APIC machines.  Previously this was only done in the
   DETECT_DEADLOCK case when really it is needed in all cases.

Reminded by:	jhb
2004-02-02 09:50:43 +00:00