Commit Graph

2573 Commits

Author SHA1 Message Date
Jeff Roberson
50c202c592 Implement a facility for dynamic per-cpu variables.
- Modules and kernel code alike may use DPCPU_DEFINE(),
   DPCPU_GET(), DPCPU_SET(), etc. akin to the statically defined
   PCPU_*.  Requires only one extra instruction more than PCPU_* and is
   virtually the same as __thread for builtin and much faster for shared
   objects.  DPCPU variables can be initialized when defined.
 - Modules are supported by relocating the module's per-cpu linker set
   over space reserved in the kernel.  Modules may fail to load if there
   is insufficient space available.
 - Track space available for modules with a one-off extent allocator.
   Free may block for memory to allocate space for an extent.

Reviewed by:    jhb, rwatson, kan, sam, grehan, marius, marcel, stas
2009-06-23 22:42:39 +00:00
Robert Watson
bd875f5f13 Remove MAC kernel config files and add "options MAC" to GENERIC, with the
goal of shipping 8.0 with MAC support in the default kernel.  No policies
will be compiled in or enabled by default, but it will now be possible to
load them at boot or runtime without a kernel recompile.

While the framework is not believed to impose measurable overhead when no
policies are loaded (a result of optimization over the past few months in
HEAD), we'll continue to benchmark and optimize as the release approaches.
Please keep an eye out for performance or functionality regressions that
could be a result of this change.

Approved by:	re (kensmith)
Obtained from:	TrustedBSD Project
2009-06-02 18:31:08 +00:00
Marcel Moolenaar
dbb95048da Add cpu_flush_dcache() for use after non-DMA based I/O so that a
possible future I-cache coherency operation can succeed. On ARM
for example the L1 cache can be (is) virtually mapped, which
means that any I/O that uses temporary mappings will not see the
I-cache made coherent. On ia64 a similar behaviour has been
observed. By flushing the D-cache, execution of binaries backed
by md(4) and/or NFS work reliably.
For Book-E (powerpc), execution over NFS exhibits SIGILL once in
a while as well, though cpu_flush_dcache() hasn't been implemented
yet.

Doing an explicit D-cache flush as part of the non-DMA based I/O
read operation eliminates the need to do it as part of the
I-cache coherency operation itself and as such avoids pessimizing
the DMA-based I/O read operations for which D-cache are already
flushed/invalidated. It also allows future optimizations whereby
the bcopy() followed by the D-cache flush can be integrated in a
single operation, which could be implemented using on-chips DMA
engines, by-passing the D-cache altogether.
2009-05-18 18:37:18 +00:00
Yoshihiro Takahashi
85d12e2316 MFi386: revision 192050
Implement simple machine check support.
2009-05-14 16:01:29 +00:00
Jun Kuriyama
b3b17597ea - Use "device\t" and "options \t" for consistency. 2009-05-10 00:00:25 +00:00
Yoshihiro Takahashi
951323ed8c Reduce diffs against i386.
Use the hardclockintr function.
2009-05-06 04:40:18 +00:00
Alexander Motin
1703f2b424 Rename statclock_disable variable to atrtcclock_disable that it actually is,
and hide it inside of atrtc driver. Add new tunable hint.atrtc.0.clock
controlling it. Setting it to 0 disables using RTC clock as stat-/
profclock sources.

Teach i386 and amd64 SMP platforms to emulate stat-/profclocks using i8254
hardclock, when LAPIC and RTC clocks are disabled.

This allows to reduce global interrupt rate of idle system down to about
100 interrupts per core, permitting C3 and deeper C-states provide maximum
CPU power efficiency.
2009-05-03 17:47:21 +00:00
Yoshihiro Takahashi
80c516a808 MFi386: revision 191745
Add support for using i8254 and rtc timers as event sources for i386 SMP
  system. Redistribute hard-/stat-/profclock events to other CPUs using IPI.
2009-05-03 02:37:13 +00:00
Sam Leffler
dcad868984 o add uath
o sort usb wireless drivers
2009-05-01 17:20:16 +00:00
Ed Schouten
db99d0404c Migrate the olpt(4) driver to si_drv1 instead of using dev2unit().
Approved by:	nyan
2009-04-15 19:58:41 +00:00
Yoshihiro Takahashi
e532d3fafa MFi386: revision 190919
Simplify in/out functions.

  Remove a hack to generate more efficient code for port numbers below
  0x100, which has been obsolete for at least ten years, because GCC has
  an asm constraint to specify that.
2009-04-11 14:25:47 +00:00
Yoshihiro Takahashi
30a8aaf0df MFi386: revision 190617
Fill the fsbase and gsbase fields of the mcontext structure on i386.
2009-04-08 11:35:47 +00:00
Yoshihiro Takahashi
393cf853a7 MFi386: r190447
Convert gdt_segs and ldt_segs initialization to C99 style.
2009-03-27 03:45:42 +00:00
Andrew Thompson
2b78d30630 Remove the uscanner(4) driver, this follows the removal of the kernel scanner
driver in Linux 2.6. uscanner was just a simple wrapper around a fifo and
contained no logic, the default interface is now libusb (supported by sane).

Reviewed by:	HPS
2009-03-19 20:33:26 +00:00
Robert Watson
e5adda3d51 Remove IFF_NEEDSGIANT, a compatibility infrastructure introduced
in FreeBSD 5.x to allow network device drivers to run with Giant
despite the network stack being Giant-free.  This significantly
simplifies calls into ioctl() on network interfaces, especially
in the multicast code, as well as eliminates deferred invocation
of interface if_start routines.

Disable the build on device drivers still depending on
IFF_NEEDSGIANT as they no longer compile.  They will be removed
in a few weeks if they haven't been made MPSAFE in that time.
Disabled drivers:

        if_ar
        if_axe
        if_aue
        if_cdce
        if_cue
        if_kue
        if_ray
        if_rue
        if_rum
        if_sr
        if_udav
        if_ural
        if_zyd

Drivers that were already disabled because of tty changes:

        if_ppp
        if_sl

Discussed on:	arch@
2009-03-15 14:21:05 +00:00
Ed Schouten
630b9bf23f Make a 1:1 mapping between syscons stats and terminal emulators.
After I imported libteken into the source tree, I noticed syscons didn't
store the cursor position inside the terminal emulator, but inside the
virtual terminal stat. This is not very useful, because when you
implement more complex forms of line wrapping, you need to keep track of
more state than just the cursor position.

Because the kernel messages didn't share the same terminal emulator as
ttyv0, this caused a lot of strange things, like kernel messages being
misplaced and a missing notification to resize the terminal emulator for
kernel messages never to be resized when using vidcontrol.

This patch just removes kernel_console_ts and adds a special parameter
to te_puts to determine whether messages should be printed using regular
colors or the ones for kernel messages.

Reported by:	ache
Tested by:	nyan, garga (older version)
2009-03-10 11:28:54 +00:00
Yoshihiro Takahashi
227e568e30 MFi386: 189423
A better fix for handling different FPU initial control words for different
  ABIs.
2009-03-06 11:15:24 +00:00
Yoshihiro Takahashi
c0a47fb480 MFi386: part of 189421
- If there are no syscons hints at all, assume there is a single sc0 device
    anyway.  The console probe will still fail unless a VGA adapter is found.
2009-03-06 11:10:31 +00:00
Andrew Thompson
c89d41e5ff Change over the usb kernel options to the new stack (retaining existing
naming). The old usb stack can be compiled in my prefixing the name with 'o'.
2009-02-23 18:34:56 +00:00
Andrew Thompson
e31a070263 Add uslcom to the build too.
Reminded by:	Michael Butler
2009-02-15 23:40:29 +00:00
Andrew Thompson
e4edc14efd Switch over GENERIC kernels to USB2 by default.
Tested by:	make universe
2009-02-15 22:33:44 +00:00
Wojciech A. Koszek
61682d5df6 Bring missing comments on EPSON_BOUNCEDMA and EPSON_MEMWIN flags.
Submitted by:	nyan
2009-02-08 10:21:25 +00:00
Wojciech A. Koszek
1447dcd435 Tidy NOTES a bit:
- ath(4) is the last listed device, so make it's comment last as well
- since we have hints for le(4), bring it back by inserting commented
  out line until I check, if it can be safely enabled.
- bring snc(4) explanation
- put pmtimer comment together with other drivers' comments in a block
- bring comments for canbus, canbepm, pmc

olpt comment has been left blank, since I don't know how does this
driver differ from other printer drivers.
2009-02-07 00:15:30 +00:00
Wojciech A. Koszek
c353491ad3 Fix AGP debugging code:
- correct format strings
- fill opt_agp.h if AGP_DEBUG is defined
- bring AGP_DEBUG to LINT by mentioning it in NOTES

This should hopefully fix a warning that was...

Found by:	Coverity Prevent(tm)
CID:		3676
Tested on:	amd64, i386
2009-02-06 20:57:10 +00:00
Yoshihiro Takahashi
892f21a681 MFi386: 187144
Documentation-only change:

  - add a reference to the config(5) manpage;
  - hopefully clarify the format of the 'env FILENAME' directive.
2009-01-15 11:54:31 +00:00
Ed Schouten
b4b1c5169d Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.

A lot of random notes, which could be of interest to users/developers:

- Even though I'm leaving the terminal type set to `cons25', users can
  do experiments with placing `xterm-color' in /etc/ttys. Because we
  only implement a subset of features of xterm, this may cause
  artifacts. We should consider extending libteken, because in my
  opinion xterm is the way to go. Some missing features:

  - Keypad application mode (DECKPAM)
  - Character sets (SCS)

- libteken is filled with a fair amount of assertions, but unfortunately
  we cannot go into the debugger anymore if we fail them. I've done
  development of this library almost entirely in userspace. In
  sys/dev/syscons/teken there are two applications that can be helpful
  when debugging the code:

  - teken_demo: a terminal emulator that can be started from a regular
    xterm that emulates a terminal using libteken. This application can
    be very useful to debug any rendering issues.

  - teken_stress: a stress testing application that emulates random
    terminal output. libteken has literally survived multiple terabytes
    of random input.

- libteken also includes support for UTF-8, but unfortunately our input
  layer and font renderer don't support this. If users want to
  experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
  teken.h. If you recompile your kernel or the teken_demo application,
  you can hold some nice experiments.

- I've left PC98 the way it is right now. The PC98 platform has a custom
  syscons renderer, which supports some form of localised input. Maybe
  we should port PC98 to libteken by the time syscons supports UTF-8?

- I've removed the `dumb' terminal emulator. It has been broken for
  years. It hasn't survived the `struct proc' -> `struct thread'
  conversion.

- To prevent confusion among people that want to hack on libteken:
  unlike syscons, the state machines that parse the escape sequences are
  machine generated. This means that if you want to add new escape
  sequences, you have to add an entry to the `sequences' file. This will
  cause new entries to be added to `teken_state.h'.

- Any rendering artifacts that didn't occur prior to this commit are by
  accident. They should be reported to me, so I can fix them.

Discussed on:	current@, hackers@
Discussed with:	philip (at 25C3)
2009-01-01 13:26:53 +00:00
Yoshihiro Takahashi
399b0d9b40 Disable the pccard, parallel, GbE and wireless lan related devices and
some options by default to decrease a kernel size.
Because PC98 does not have so much memory.

MFC after:	3 days
2008-12-21 09:01:00 +00:00
Marcel Moolenaar
05002c354b Make gpart the default partitioning class on all platforms.
Both ia64 and powerpc were using gpart exclusively already
so there's no change for those two.

Discussed on: arch@
2008-12-17 17:43:22 +00:00
Ed Schouten
bfba40a452 Remove "[KEEP THIS!]" from COMPAT_43TTY. It's not really that important.
Sgtty is a programming interface that has been replaced by termios over
the years. In June we already removed <sgtty.h>, which exposes the
ioctl()'s that are implemented by this interface. The importance of this
flag is overrated right now.
2008-12-02 19:09:08 +00:00
Sam Leffler
3364462355 Switch to ath hal source code. Note this removes the ath_hal
module; the ath module now brings in the hal support.  Kernel
config files are almost backwards compatible; supplying

device ath_hal

gives you the same chip support that the binary hal did but you
must also include

options AH_SUPPORT_AR5416

to enable the extended format descriptors used by 11n parts.
It is now possible to control the chip support included in a
build by specifying exactly which chips are to be supported
in the config file; consult ath_hal(4) for information.
2008-12-01 16:53:01 +00:00
KATO Takenori
11df23b530 Improved IDE HDD geometry adjustment. Previous code didn't work with
certain ATA-6 drives including CF cards.

The IDE geometry of the PC98 is calculated from the drive capacity.
In addition to the algorithm in NEC BIOS, a variety of algorithms are
provided by 3'rd party boards and BIOS hacks.  This change has
implemented the three algorithms: IDE BIOS compatible mode, SCSI BIOS
compatible mode and same way as the previous version.  The tunable
machdep.ad_geom_method selects the algorithm.

I have been using this change for a year with CF cards.

Reminded by: nyan
2008-10-27 08:40:13 +00:00
Ed Schouten
6bfa9a2d66 Replace all calls to minor() with dev2unit().
After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by:	kib
2008-09-27 08:51:18 +00:00
John Baldwin
26e4688329 Resurrect the sbni(4) driver. Someone finally tested the MPSAFE patches and
the driver worked ok with them.

Tested by:	friends of yar
2008-09-10 18:36:58 +00:00
Yoshihiro Takahashi
05165e3276 - Add the i386_memio_map_load() function to load I/O address table.
- Add the bus_space_compare macro for bus_space consistency.
- Switch using the bus_space_map_load() in isa_load_resourcev().
2008-09-07 04:44:24 +00:00
Yoshihiro Takahashi
ebd2b74476 - Cleanup i8251 related defines.
- Move i8255 related defines into a separate file.
2008-09-07 04:35:04 +00:00
Yoshihiro Takahashi
fb7921a5f7 Add the uart for 2nd CCU support. 2008-08-25 14:52:50 +00:00
Ed Schouten
bc093719ca Integrate the new MPSAFE TTY layer to the FreeBSD operating system.
The last half year I've been working on a replacement TTY layer for the
FreeBSD kernel. The new TTY layer was designed to improve the following:

- Improved driver model:

  The old TTY layer has a driver model that is not abstract enough to
  make it friendly to use. A good example is the output path, where the
  device drivers directly access the output buffers. This means that an
  in-kernel PPP implementation must always convert network buffers into
  TTY buffers.

  If a PPP implementation would be built on top of the new TTY layer
  (still needs a hooks layer, though), it would allow the PPP
  implementation to directly hand the data to the TTY driver.

- Improved hotplugging:

  With the old TTY layer, it isn't entirely safe to destroy TTY's from
  the system. This implementation has a two-step destructing design,
  where the driver first abandons the TTY. After all threads have left
  the TTY, the TTY layer calls a routine in the driver, which can be
  used to free resources (unit numbers, etc).

  The pts(4) driver also implements this feature, which means
  posix_openpt() will now return PTY's that are created on the fly.

- Improved performance:

  One of the major improvements is the per-TTY mutex, which is expected
  to improve scalability when compared to the old Giant locking.
  Another change is the unbuffered copying to userspace, which is both
  used on TTY device nodes and PTY masters.

Upgrading should be quite straightforward. Unlike previous versions,
existing kernel configuration files do not need to be changed, except
when they reference device drivers that are listed in UPDATING.

Obtained from:		//depot/projects/mpsafetty/...
Approved by:		philip (ex-mentor)
Discussed:		on the lists, at BSDCan, at the DevSummit
Sponsored by:		Snow B.V., the Netherlands
dcons(4) fixed by:	kan
2008-08-20 08:31:58 +00:00
Ed Schouten
200d80cd74 Disconnect drivers that haven't been ported to MPSAFE TTY yet.
As clearly mentioned on the mailing lists, there is a list of drivers
that have not been ported to the MPSAFE TTY layer yet. Remove them from
the kernel configuration files. This means people can now still use
these drivers if they explicitly put them in their kernel configuration
file, which is good.

People should keep in mind that after August 10, these drivers will not
work anymore. Even though owners of the hardware are capable of getting
these drivers working again, I will see if I can at least get them to a
compilable state (if time permits).
2008-08-03 10:32:17 +00:00
Xin LI
dbd47f1592 Add HWPMC_HOOKS to GENERIC kernels, this makes hwpmc.ko work out
of the box.
2008-07-07 22:55:11 +00:00
Yoshihiro Takahashi
48d0e1242e Add i386_memio_compare() to compare two resources.
It's used by uart(4) in the future.
2008-07-05 16:31:58 +00:00
John Baldwin
e9a31041c0 Remove the sbni(4) driver. No one responded to calls to test it on
current@ and stable@.
2008-07-04 21:06:57 +00:00
John Baldwin
2c6298572e Remove the oltr(4) driver. No one responded to calls for testing on
current@ and stable@ for the locking patches.  The driver can always be
revived if someone tests it.

This driver also sleeps in its if_init routine, so it likely doesn't really
work at all anyway in modern releases.
2008-07-04 18:58:53 +00:00
Wojciech A. Koszek
53a609f064 Remove obselete PECOFF image activator support.
PRs assigned at the time of removal:    kern/80742

Discussed on:   freebsd-current (silence), IRC
Tested by:      make universe
Approved by:    cognet (mentor)
2008-06-14 12:51:44 +00:00
Bjoern A. Zeeb
2e598474fa Remove ISDN4BSD (I4B) from HEAD as it is not MPSAFE and
parts relied on the now removed NET_NEEDS_GIANT.
Most of I4B has been disconnected from the build
since July 2007 in HEAD/RELENG_7.

This is what was removed:
- configuration in /etc/isdn
- examples
- man pages
- kernel configuration
- sys/i4b (drivers, layers, include files)
- user space tools
- i4b support from ppp
- further documentation

Discussed with: rwatson, re
2008-05-26 10:40:09 +00:00
Yoshihiro Takahashi
6f73422ac9 MFi386: revision 1.249
Add a cyclic hook for DTrace.
2008-05-24 09:07:52 +00:00
Remko Lodder
6e535f6e5b Resort the if_ti driver to match the PCI Network cards instead of placing
it under the mii devices list.

PR:		kern/123147
Submitted by:	gavin
Approved by:	imp (mentor, implicit)
MFC after:	3 days
2008-05-17 23:50:00 +00:00
Peter Wemm
43d7128c14 Expand kdb_alt_break a little, most commonly used with the option
ALT_BREAK_TO_DEBUGGER.  In addition to "Enter ~ ctrl-B" (to enter the
debugger), there is now "Enter ~ ctrl-P" (force panic) and
"Enter ~ ctrl-R" (request clean reboot, ala ctrl-alt-del on syscons).

We've used variations of this at work.  The force panic sequence is
best used with KDB_UNATTENDED for when you just want it to dump and
get on with it.

The reboot request is a safer way of getting into single user than
a power cycle.  eg: you've hosed the ability to log in (pam, rtld, etc).
It gives init the reboot signal, which causes an orderly reboot.

I've taken my best guess at what the !x86 and non-sio code changes
should be.

This also makes sio release its spinlock before calling KDB/DDB.
2008-05-04 23:29:38 +00:00
Sam Leffler
6c26723b19 enable IEEE80211_DEBUG and IEEE80211_AMPDU_AGE by default 2008-05-03 17:05:38 +00:00
Jeff Roberson
6c47aaae12 - Add an integer argument to idle to indicate how likely we are to wake
from idle over the next tick.
 - Add a new MD routine, cpu_wake_idle() to wakeup idle threads who are
   suspended in cpu specific states.  This function can fail and cause the
   scheduler to fall back to another mechanism (ipi).
 - Implement support for mwait in cpu_idle() on i386/amd64 machines that
   support it.  mwait is a higher performance way to synchronize cpus
   as compared to hlt & ipis.
 - Allow selecting the idle routine by name via sysctl machdep.idle.  This
   replaces machdep.cpu_idle_hlt.  Only idle routines supported by the
   current machine are permitted.

Sponsored by:	Nokia
2008-04-25 05:18:50 +00:00
Poul-Henning Kamp
9b4a8ab7ba Now that all platforms use genclock, shuffle things around slightly
for better structure.

Much of this is related to <sys/clock.h>, which should really have
been called <sys/calendar.h>, but unless and until we need the name,
the repocopy can wait.

In general the kernel does not know about minutes, hours, days,
timezones, daylight savings time, leap-years and such.  All that
is theoretically a matter for userland only.

Parts of kernel code does however care: badly designed filesystems
store timestamps in local time and RTC chips almost universally
track time in a YY-MM-DD HH:MM:SS format, and sometimes in local
timezone instead of UTC.  For this we have <sys/clock.h>

<sys/time.h> on the other hand, deals with time_t, timeval, timespec
and so on.  These know only seconds and fractions thereof.

Move inittodr() and resettodr() prototypes to <sys/time.h>.
Retain the names as it is one of the few surviving PDP/VAX references.

Move startrtclock() to <machine/clock.h> on relevant platforms, it
is a MD call between machdep.c/clock.c.  Remove references to it
elsewhere.

Remove a lot of unnecessary <sys/clock.h> includes.

Move the machdep.disable_rtc_set sysctl to subr_rtc.c where it belongs.
XXX: should be kern.disable_rtc_set really, it's not MD.
2008-04-22 19:38:30 +00:00