Commit Graph

1398 Commits

Author SHA1 Message Date
Philip Paeps
c4dbfe3893 Assume a finger of regular width when no width value is reported by
the touchpad (which happens when it has no extended capabilities).

Spotted by:	dhw
Forgotten by:	philip
2004-08-08 01:26:00 +00:00
Philip Paeps
1b5dd3aee5 Update support for Synaptics Touchpads (Volume IV)
o Change the motion calculation to result in
   a more reasonable speed of motion

This should fix the 'aiming' problems people have reported.  It also
mitigates (but doesn't completely solve) the 'stalling' problems at
very low speeds.

Tested by:	many subscribers to -current
Approved by:	njl
2004-08-08 01:10:23 +00:00
Philip Paeps
bc1418f61c Update support for Synaptics Touchpads (Volume III)
o Catch 'taps' as button presses

 o One finger sends button1, two fingers send button3,
   three fingers send button2 (double-click)

Tested by:	many subscribers to -current
Approved by:	njl
2004-08-08 01:00:31 +00:00
Philip Paeps
7589cb5cae Update support for Synaptics Touchpads (Volume II)
o Handle the 'up/down' buttons some touchpads have as
   a z-axis (scrollwheel) as recommended by the specs

 o Report the buttons as button4 and button5 instead
   of button2 and button4, button2 can be emulated by
   pressing button1 and button3 simultaneously.  This
   allows one to use the two extra buttons for other
   purposes if one so desires.

Tested by:	many subscribers to -current
Approved by:	njl
2004-08-08 00:57:07 +00:00
Philip Paeps
4079d722ac Update support for Synaptics Touchpads (Volume I)
o Clean up whitespace and comments in the
   enable_synaptics() probing function

 o Only use (and rely on) the extended capability
   bits when we are told they actually exist

 o Partly ignore the (possibly dated?) part of the
   specification about the mode byte so that we
   can support 'guest devices' too.

Tested by:	many subscribers to -current
Approved by:	njl
2004-08-08 00:52:11 +00:00
Nate Lawson
a4cdf60c7d Add support for the Synaptics Touchpad mouse driver. I reworked the
submitted version with style cleanups and changes to comments.  I also
modified the ioctl interface.  This version only has one ioctl (to get
the Synaptics-specific config parameters) since this is the only
information a user might want.

Submitted by:	Arne Schwabe <arne -at- rfc2549.org>
2004-07-30 00:59:40 +00:00
Maxime Henrion
d49311a74f Ignore more strange return values of the test_aux_port() function,
because some notebooks (apparently Compaq, Toshiba and Acer ones)
erroneously return 2 or 3 there.

PR:		kern/61482, kern/54188
Submitted by:	Ulf Lilleengen <lulf@kerneled.org>,
		Victor Balada Diaz <victor@alf.dyndns.ws>
MFC after:	3 days
2004-07-16 22:04:29 +00:00
Marcel Moolenaar
45cfc0a914 Partially revert previous commit. Calling getit() unconditionally fixed
a problem that could also be fixed differently without reverting previous
attempts to fix DELAY while the debugger is active (rev 1.204). The bug
was that the i8254 implements a countdown timer, while for (k)db_active
a countup timer was implemented. This resulted in premature termination
and consequently the breakage of DELAY. The fix (relative to rev 1.211)
is to implement a countdown timer for the kdb_active case. As such the
ability to step clock initialization is preserved and DELAY does what is
expected of it.

Blushed: bde :-)
Submitted by: bde
2004-07-11 17:50:59 +00:00
Marcel Moolenaar
7f46949fdf Call getit() unconditionally and only grab clock_lock when the
debugger is not active. The fixes breakages of DELAY() when
running in the debugger, because not calling getit() when the
debugger is active yields a DELAY that doesn't.
2004-07-10 22:16:18 +00:00
Warner Losh
969947cbe7 These option roms are defined in the ISA standard, and in the ISA
hole, so call them ISA Options rom(s).
2004-07-05 17:26:04 +00:00
Poul-Henning Kamp
89c9c53da0 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
John Baldwin
092a5c4530 Remove atdevbase and replace it's remaining uses with direct references to
KERNBASE instead.
2004-06-10 20:31:00 +00:00
Poul-Henning Kamp
5dba30f15a add missing #include <sys/module.h> 2004-05-30 20:27:19 +00:00
Poul-Henning Kamp
41ee9f1c69 Add some missing <sys/module.h> includes which are masked by the
one on death-row in <sys/kernel.h>
2004-05-30 17:57:46 +00:00
Warner Losh
6cd91141eb Move fdc from isa/fd.c to dev/fdc/fdc.c. The old files were
repocopied.  Soon there will be additional bus attachments and
specialization for isa, acpi and pccard (and maybe pc98's cbus).

This was approved by nate, joerg and myself.  bde dissented on the new
location, but appeared to be OK after some discussion.
2004-05-17 05:46:16 +00:00
John Baldwin
d4d4ece72d Trim unused includes. 2004-05-11 20:14:53 +00:00
John Baldwin
f9acc6410e - The i8254 uses IRQ 0, not IRQ 8. Correct i8254_intsrc to reference the
correct interrupt source.
- Cache a pointer to the i8254_intsrc's pending method to avoid several
  pointer indirections in i8254_get_timecount().

Reported by:	bde
2004-04-27 20:03:26 +00:00
Bruce Evans
a3a10d1c3c Fixed breakage of the formatting operation in rev.1.266. The wrong
clause of an if-else statement was removed.

Reviewed by:	no response from maintainer in 12 days
2004-04-25 04:33:56 +00:00
Maxime Henrion
0335702b9f Don't check for device_get_softc() returning NULL, it can't happen. 2004-04-17 10:25:04 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
Mark Murray
44e421c906 Put a bunch of output that us really only useful in a debug
scenario into #ifdef DEBUG. This makes my cluster with Belkin
KVM switch completely usable, even if the KVM switch and mouse
get a bit confused sometimes.

Without this, when the mouse gets confused, all sorts of crud
gets spammed all over the screen. With this, the mouse may appear
dead for a second or three, but it recovers silently.
2004-04-04 16:36:21 +00:00
Nate Lawson
5f96beb9e0 Convert callers to the new bus_alloc_resource_any(9) API.
Submitted by:	Mark Santcroos <marks@ripe.net>
Reviewed by:	imp, dfr, bde
2004-03-17 17:50:55 +00:00
Poul-Henning Kamp
db42ff97da Remove unused FDNUMTOUNIT() macro 2004-02-29 10:21:40 +00:00
Poul-Henning Kamp
503799ea5c Make mode setting with fdcontrol(8) stick.
Recognize when configured for "auto".
2004-02-25 13:44:58 +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
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
Nate Lawson
64746d0689 Workaround some ACPI BIOSen which break the IO port into multiple
resources.  (Note that the correct range is 0x3f7,0x3f0-0x3f5.)  Such
devices will be detected as follows:

  fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port
  0x3f7,0x3f4-0x3f5,0x3f2-0x3f3,0x3f0-0x3f1 irq 6 drq 2 on acpi0

To do this, we find the minimum and maximum start addresses for the
resources and use them as the base for the IO and control ports.

Help from:	jhb
2004-02-15 20:30:22 +00:00
Alfred Perlstein
de75fd6d2b Significantly reduce the "jitter" that is typical for PS/2 mice
when using a KVM.

There is no actual solution possible, but this gets us pretty close.

Typically when switching back to a FreeBSD box and moving the mouse
wild data is produced, because the protocol's validation/checksum
system is extremely weak it is impossible to determine that we're
out of sync before dropping several bogus packets to user land.

The actual solution that appears to offer the best clamping of
jitter is to buffer the mouse packets if we've not seen mouse
activity for more than .5 seconds.  Then waiting to flush that data
for 1/20th of a second.  If within that 20th of a second we get any
packets that do fail the weak test we drop the entire queue and
back off accepting data from the mouse for 2 seconds and then repeat
the whole deal.

You can still get _some_ jitter, notably if you switch to the FreeBSD
box, then move the mouse just enough to generate one or two packets.
Those packets may be bogus, but may still pass the validity check.

One way to finally kill the problem once and for all is to check
the initial packets for "wild" values.  Typically one sees packets
in the +/-60 range during normal operation, however when bogus data
is generated it's typically near the outer range of +/-120 or more,
those packets would be a good candidate for dropping or clamping.

I've been running with this for several weeks now and it has
significantly helped me stay sane even with a piece of junk Belkin
KVM causing wild jitter each and every time I switch.

Lastly I'd like to note that my experience with Windows shows me that
somehow the Microsoft PS/2 driver typically avoids this problem, but
that may only be possible when running the mouse in a dumb-ed down PS/2
mode that Belkin recommends on their site.
2003-12-11 11:28:11 +00:00
Poul-Henning Kamp
daf9092bcd Don't disable the TSC with statclock_disable. 2003-11-13 10:02:12 +00:00
Seigo Tanimura
512824f8f7 - Implement selwakeuppri() which allows raising the priority of a
thread being waken up.  The thread waken up can run at a priority as
  high as after tsleep().

- Replace selwakeup()s with selwakeuppri()s and pass appropriate
  priorities.

- Add cv_broadcastpri() which raises the priority of the broadcast
  threads.  Used by selwakeuppri() if collision occurs.

Not objected in:	-arch, -current
2003-11-09 09:17:26 +00:00
John Baldwin
6f92bdd0c1 New APIC support code:
- The apic interrupt entry points have been rewritten so that each entry
  point can serve 32 different vectors.  When the entry is executed, it
  uses one of the 32-bit ISR registers to determine which vector in its
  assigned range was triggered.  Thus, the apic code can support 159
  different interrupt vectors with only 5 entry points.
- We now always to disable the local APIC to work around an errata in
  certain PPros and then re-enable it again if we decide to use the APICs
  to route interrupts.
- We no longer map IO APICs or local APICs using special page table
  entries.  Instead, we just use pmap_mapdev().  We also no longer
  export the virtual address of the local APIC as a global symbol to
  the rest of the system, but only in local_apic.c.  To aid this, the
  APIC ID of each CPU is exported as a per-CPU variable.
- Interrupt sources are provided for each intpin on each IO APIC.
  Currently, each source is given a unique interrupt vector meaning that
  PCI interrupts are not shared on most machines with an I/O APIC.
  That mapping for interrupt sources to interrupt vectors is up to the
  APIC enumerator driver however.
- We no longer probe to see if we need to use mixed mode to route IRQ 0,
  instead we always use mixed mode to route IRQ 0 for now.  This can be
  disabled via the 'NO_MIXED_MODE' kernel option.
- The npx(4) driver now always probes to see if a built-in FPU is present
  since this test can now be performed with the new APIC code.  However,
  an SMP kernel will panic if there is more than one CPU and a built-in
  FPU is not found.
- PCI interrupts are now properly routed when using APICs to route
  interrupts, so remove the hack to psuedo-route interrupts when the
  intpin register was read.
- The apic.h header was moved to apicreg.h and a new apicvar.h header
  that declares the APIs used by the new APIC code was added.
2003-11-03 21:53:38 +00:00
Nate Lawson
e8c321c92f Fix a panic that occurs when resuming. For some reason, sc->cur_scp is
NULL.

Submitted by:	Andrew Thompson <andy@fud.org.nz>
2003-10-29 20:48:13 +00:00
Peter Wemm
042093540c Look at the equipment list for amd64 as well as i386 for autodetecting
floppy drives in the absence of hints.
2003-10-23 05:52:52 +00:00
Poul-Henning Kamp
b52b7f465d Eliminate use bio_blkno. 2003-10-18 17:51:26 +00:00
Poul-Henning Kamp
4866f95d76 Change fb_attach() and fb_detach() to take a integer unit number rather
than a dev_t.

All of the dev_t's passed were bogusly created with makedev()
2003-09-26 10:41:44 +00:00
Warner Losh
00dc18b5a8 Per TRB vote: restore the aquire_timer0 and associated goo. This will
be gone in FreeBSD 6, so put BURN_BRIDGES around it.  The TRB also
felt that if something better comes along sooner, it can be used to
replace this code.

Delayed by: BSDcon and subsequent disk crash.
2003-09-24 15:33:33 +00:00
Poul-Henning Kamp
a2f19df9cc Pick up softc from dev_t rathern than through newbus gymnastics. 2003-09-17 07:40:00 +00:00
Poul-Henning Kamp
f967c4f96e Since it is static these days, there is no reason to uppercase the
first letter of fdopen() to avoid nameclashing with other stuff.
2003-09-17 07:21:20 +00:00
Poul-Henning Kamp
0c7721e8f9 Disable the use of cloning use in floppy and CD drivers.
This commit puts the relevant code snippets under #ifdef GONE_IN_5
(rather than #ifndef BURN_BRIDGES) thereby disabling the code now.

The code wil be entirely removed before 5.2 unless we find reasons
why this would be a bad idea.

Approach suggested by:	imp
2003-09-11 19:27:24 +00:00
Bruce Evans
4df0520624 clock.c:
Quick fix for calling DELAY() for ddb input in some (atkbd-based)
console drivers.  ddb must not use any normal locks, but DELAY()
normally calls getit() which needs clock_lock.  One problem with using
normal locks in ddb is that deadlock is possible, but deadlock on
clock_lock is unlikely becaluse clock_lock is bogusly recursive,
apparently just to hide the problem of ddb using it.  The i8254 clock
hardware has mostly write-only registers so it is important for it to
use a lock that gives exclusive access.  (atkbd hardware is also
unfriendly to reentrant software but that problem is more local and
already solved.)  I mostly saw the symptoms of the bug caused by
unlocking in getit() running cpu_unpend().  cpu_unpend() should not
be called while in ddb and Debugger() calls for failing assertions
about this caused a breakpoint within ddb.

ddb must also not call getit() because ddb may be being used to step
through clock initialization code that has stopped or otherwise mangled
the clock.  If the clock is stopped, then getit() always returns the
same value and DELAY() takes forever if it trusts getit().

The quick fix is implement DELAY(n) as (n * timer_freq / 1000000)
inb(0x84)'s if ddb is active.

machdep.c:
Don't permit recursion on clock_lock.
2003-09-07 14:23:08 +00:00
Peter Wemm
b324e86370 Clean up some antique stuff. We do not support Weitek FPUs etc, and never
did.
2003-09-05 14:54:26 +00:00
Poul-Henning Kamp
7837155fa2 Put the device cloning functions for disk-drivers under #ifndef BURN_BRIDGES.
For the floppy driver, use fdcontrol to manipulate density selection.

For the CD drivers, the 'a' and 'c' suffix is without actual effect and
any applications insisting on it can be satisfied with a symlink:
	ln -s /dev/cd0 /dev/cd0a

Ongoing discussion may result in these pieces of code being removed before
the 5-stable branch as opposed to after.
2003-09-05 10:40:16 +00:00
Poul-Henning Kamp
78a49a45bc Give timecounters a numeric quality field.
A timecounter will be selected when registered if its quality is
not negative and no less than the current timecounters.

Add a sysctl to report all available timecounters and their qualities.

Give the dummy timecounter a solid negative quality of minus a million.

Give the i8254 zero and the ACPI 1000.

The TSC gets 800, unless APM or SMP forces it negative.

Other timecounters default to zero quality and thereby retain current
selection behaviour.
2003-08-16 08:23:53 +00:00
Poul-Henning Kamp
8dcee923b5 remove acquire_timer0() and release_timer0() and related stuff. 2003-08-15 15:50:49 +00:00
Poul-Henning Kamp
2fbc275447 Dont initialize a TSC timecounter until we know if it is broken or not. 2003-08-06 15:05:27 +00:00
Doug Ambrisko
a373227418 Add printer support to puc(4) driver.
-	Move isa/ppc* to sys/dev/ppc (repo-copy)
      -	Add an attachment method to ppc for puc
      -	In puc we need to walk the chain of parents.
Still to do, is to make ppc(4) & puc(4) work on other platforms.  Testers
wanted.

PR:		38372 (in spirit done differently)
Verified by:	Make universe (if I messed up a platform please fix)
2003-08-01 02:25:32 +00:00
Mike Heffner
e0c22597cb Add support for the A4 Tech RFSW-35 mouse wheel. Probe is similar to
4D Plus.

PR:		44333
2003-07-12 18:36:04 +00:00
John Baldwin
c37faf267c - Make the isab devclass global to allow for multiple ISA bridge drivers.
- Factor out code common to all ISA bridge drivers attach methods into a
  isab_attach() function.
- Rename the PCI-ISA bridge driver's attach function to pci_isab_attach()
  and have it call isab_attach().
2003-07-08 18:56:58 +00:00
Mike Heffner
b1181a94a3 Reset the PSM aux device twice to help pierce through some KVM's to
get the correct data from the attached mouse. Multiple resets should
be harmless, but just in case, the second one is non-fatal and is just
ignored.
2003-07-07 05:40:13 +00:00
John Baldwin
8a9bc9c03b - Use the new resource_disabled() helper function to see if devices are
disabled.
- Change the apm driver to match the acpi driver's behavior by checking to
  see if the device is disabled in the identify routine instead of in the
  probe routine.  This way if the device is disabled it is never created.

Note that a few places (ips(4), Alpha SMP) used "disable" instead of
"disabled" for their hint names, and these hints must be changed to
"disabled".  If this is a big problem, resource_disabled() can always be
changed to honor both names.
2003-07-02 16:09:02 +00:00
Mike Heffner
6d1c16554d Add PnP PS/2 id for Dell Latitude X200.
PR:		48516
MFC after:	2 weeks
2003-07-01 14:41:16 +00:00
Yaroslav Tykhiy
62cc1e0584 Force media autodetection if the device has lost its parameter table.
Previously, any normal I/O on an fdc(4) device would fail with ENXIO
if the device had been opened in non-blocking mode and then closed
prior to the conventional access; that would last until the floppy
disk was ejected and re-inserted to raise the unit attention condition.

Add a clarifying comment.
2003-06-16 08:42:20 +00:00
Yaroslav Tykhiy
f79981aca8 If in non-blocking mode, return EAGAIN instead of ENXIO
on an I/O attempt.  This is needed for consistency with
the concept of the half-opened state of fdc(4).

PR:		kern/52338
2003-06-16 07:50:17 +00:00
Yaroslav Tykhiy
83efe35a66 Always set bio_resid properly in fdstrategy(),
as should every block device strategy routine.
There was at least one evil consequence of not doing so:
Some errors returned by fdstrategy() could be lost (EAGAIN,
in particular.)

PR:		kern/52338 (in the audit-trail)
Discussed with:	bde
2003-06-15 18:13:17 +00:00
Yaroslav Tykhiy
29ec21d1e3 Check whether the floppy type pointer has been set before trying
to access floppy parameters through it.

Note: The DIOCGSECTORSIZE and DIOCGMEDIASIZE handlers withing
fdioctl() couldn't be just moved to below the existing check
for blocking mode because fd->ft can be non-NULL while still
in non-blocking mode (fd->ft can be set with the FD_STYPE ioctl.)

PR:		kern/52338
No MFC:		Not applicable to STABLE
2003-06-15 16:18:58 +00:00
David E. O'Brien
8c9bbf484a Use __FBSDID(). 2003-06-11 00:34:37 +00:00
David E. O'Brien
006124d811 Use __FBSDID(). 2003-06-02 16:32:55 +00:00
Poul-Henning Kamp
a3e7d3f16f wrap macro in do {...} while(0) 2003-05-31 21:11:51 +00:00
Poul-Henning Kamp
670966596b Remove unused variable(s).
Found by:       FlexeLint
2003-05-31 20:29:34 +00:00
Poul-Henning Kamp
7d4220518e Remove break after return;
Found by:       FlexeLint
2003-05-31 20:24:30 +00:00
Poul-Henning Kamp
9a3454805e Don't rely on boolean expression evaluating to 1 or 0 by default.
Found by:       FlexeLint
2003-05-31 20:23:46 +00:00
Poul-Henning Kamp
30f5ad0faf Remove unused variable(s).
Mark a non-critical memoryleak with XXX comment

Found by:       FlexeLint
2003-05-31 20:21:53 +00:00
Poul-Henning Kamp
c7b24d7dcd Remove unused variable.
Found by:       FlexeLint
2003-05-31 18:45:32 +00:00
Poul-Henning Kamp
9d4b1fa40e Remove extra ';'
Found by:       FlexeLint
2003-05-31 18:37:30 +00:00
Peter Wemm
33a9fd010d Only use the pc bios stuff on i386's. I think this might even be unused
there too.
2003-05-01 04:23:15 +00:00
Peter Wemm
0eb8d2e84a Create a 'legacy' node for AMD64 as well as i386. While we'll never
have to use it since all AMD64 machines are supposed to have acpi etc,
I'm using it during development so I can avoid the acpi code for now.
Yes, this is cheating.
2003-04-30 21:41:41 +00:00
Mark Murray
51da11a27a Fix some easy, global, lint warnings. In most cases, this means
making some local variables static. In a couple of cases, this means
removing an unused variable.
2003-04-30 12:57:40 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Matthew N. Dodd
f7130d0977 Add a module version number. 2003-04-15 04:19:49 +00:00
Poul-Henning Kamp
891619a66d Use bioq_flush() to drain a bio queue with a specific error code.
Retain the mistake of not updating the devstat API for now.

Spell bioq_disksort() consistently with the remaining bioq_*().

#include <geom/geom_disk.h> where this is more appropriate.
2003-04-01 15:06:26 +00:00
Matthew N. Dodd
adbc4f03a6 Correct an argument to bus_alloc_resource(). 2003-03-25 04:34:33 +00:00
Jake Burkholder
227f9a1c58 - Add vm_paddr_t, a physical address type. This is required for systems
where physical addresses larger than virtual addresses, such as i386s
  with PAE.
- Use this to represent physical addresses in the MI vm system and in the
  i386 pmap code.  This also changes the paddr parameter to d_mmap_t.
- Fix printf formats to handle physical addresses >4G in the i386 memory
  detection code, and due to kvtop returning vm_paddr_t instead of u_long.

Note that this is a name change only; vm_paddr_t is still the same as
vm_offset_t on all currently supported platforms.

Sponsored by:	DARPA, Network Associates Laboratories
Discussed with:	re, phk (cdevsw change)
2003-03-25 00:07:06 +00:00
Matthew N. Dodd
b7b5ae3edb Use repo-copied files in sys/i386/bios. 2003-03-24 19:14:46 +00:00
Poul-Henning Kamp
b4b138c27f Including <sys/stdint.h> is (almost?) universally only to be able to use
%j in printfs, so put a newsted include in <sys/systm.h> where the printf
prototype lives and save everybody else the trouble.
2003-03-18 08:45:25 +00:00
Poul-Henning Kamp
8595de4aec Fix a malloc() with no legal modeflag. 2003-03-17 07:26:25 +00:00
Poul-Henning Kamp
1ecc485c1b Call devstat_start_transaction_bio() instead of devstat_start_transaction() 2003-03-15 10:50:44 +00:00
Poul-Henning Kamp
8098046099 Allocate the devstat structure with devstat_new_entry(). 2003-03-08 21:32:59 +00:00
Poul-Henning Kamp
7ac40f5f59 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
Dag-Erling Smørgrav
521f364b80 More low-hanging fruit: kill caddr_t in calls to wakeup(9) / [mt]sleep(9). 2003-03-02 16:54:40 +00:00
Maxime Henrion
07159f9c56 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
Poul-Henning Kamp
70d8e2e9aa Switch to using the TSC code in i386/i386/tsc.c. 2003-02-11 11:43:25 +00:00
Poul-Henning Kamp
91f1c2b3cc Split the global timezone structure into two integer fields to
prevent the compiler from optimizing assignments into byte-copy
operations which might make access to the individual fields non-atomic.

Use the individual fields throughout, and don't bother locking them with
Giant: it is no longer needed.

Inspired by:    tjr
2003-02-03 19:49:35 +00:00
Jake Burkholder
238dd3209a Split statclock into statclock and profclock, and made the method for driving
statclock based on profhz when profiling is enabled MD, since most platforms
don't use this anyway.  This removes the need for statclock_process, whose
only purpose was to subdivide profhz, and gets the profiling clock running
outside of sched_lock on platforms that implement suswintr.
Also changed the interface for starting and stopping the profiling clock to
do just that, instead of changing the rate of statclock, since they can now
be separate.

Reviewed by:	jhb, tmm
Tested on:	i386, sparc64
2003-02-03 17:53:15 +00:00
Yoshihiro Takahashi
afb79ecedd Correct error message. 2003-02-02 13:06:18 +00:00
Poul-Henning Kamp
3c99c0bc50 Make tsc_freq a 64bit quantity.
Inspired by:    http://www.theinquirer.net/?article=7481
2003-01-29 11:36:39 +00:00
Marcel Moolenaar
19ad245042 YAM: This id is found in a Sony Vaio GRX-670. When will this end?
Submitted by: Chuck McCrobie <mccrobie2000@yahoo.com>
2003-01-22 22:02:09 +00:00
Jeffrey Hsu
033aebebc4 Add yet another Sony Vaio PS/2 mouse ID. This one is found on a VX88.
Submitted by:	marcel
2003-01-22 03:31:08 +00:00
Marcel Moolenaar
99fd68d987 Add yet another Sony Vaio PS/2 mouse ID. This one is found in a R505GL.
The ACPI data for the mouse includes the compatibility ID, but we
apparently don't make use of it.
2003-01-21 10:00:32 +00:00
Matthew N. Dodd
dcb65c595d Make the SC_NO_SUSPEND_VTYSWITCH kernel option available as a loader
tunable and sysctl (hw.syscons.sc_no_suspend_vtswitch).
2003-01-15 03:45:27 +00:00
Matthew N. Dodd
6dc61b5ae5 - GC a few more hand-rolled 'abs' macros.
- GC a few hand-rolled min()/max() macros while I'm here.
2003-01-15 02:15:57 +00:00
Joerg Wunsch
294d88444b Bail out of fd_clone() if the parsed unit number doesn't match our
expectation.

This solves the problem, where in a constellation with two (or more)
drives, an attempt is made to access a device name for that device
using a historic partition letter, like /dev/fd1c.  This is supposed
to create a symlink to the master device, but previously, the link was
always created to /dev/fd0, even if the request was for fd1*.
2003-01-11 20:10:41 +00:00
Poul-Henning Kamp
2b64426519 Remove calls to cdevsw_add(), they are dreprecated on this branch now. 2002-12-28 21:39:04 +00:00
Poul-Henning Kamp
92a306a2b6 Use the correct value when writing the Day Of Week byte in the CMOS.
The correct range is [1...7] with Sunday=1, but we have been writing
[0...6] with Sunday=0.

The Soekris computers flagged the zero, zapped the date, so if you
rebooted your soekris on a sunday, it would come up with a wrong
date.

Bruce has a more extensive rework of this code, but we will stick with
the minimalist fix for now.

Spotted by:	Soren Kristensen <soren@soekris.com>
Thanks to:	Michael Sierchio <kudzu@tenebras.com>.
Confirmed by:	bde
Approved by:	re
2002-12-04 13:46:49 +00:00
Maxime Henrion
2ac8c61ac4 Capitalize the first letter of device descriptions
for consistency with the rest of the drivers.
2002-11-11 15:26:08 +00:00
John Baldwin
fbfed1cf09 Fix compile with options SC_NO_SUSPEND_VTYSWITCH. 2002-10-17 16:09:13 +00:00
Mitsuru IWASAKI
0ebefa8c4e 1. Fix a comment. Locking _is_ needed (but not done).
2. Update a comment.  We now restore much more than RTC updates and
   interrupts.
3. Order change.  Stop interrupts by writing to RTC_STATUSB,
   restore rate bits for the interrupts by writing to RTC_STATUSA,
   then enable interrupts again.
   This seems to be done perfectly backwards in startrtclock().
   Otherwise, the idea for this change was obtained from
   startrtclock().
4. Don't stop the clock (RTCB_HALT).  We only program some control bits
   and don't want to stop the clock.
5. (Not really related.)  Add caveats to the comment about timer_restore().
   The update is non-atomic since locking is not done.

On locking:
6. rtcin() and writertc() are locked() adequately by splhigh() in RELENG_4,
   but this locking is null in -current.
7. Doing things in the correct order in (3) combined with (6) is probably
   enough locking for rtcrestore() in RELENG_4.  In -current, the
   writertc()'s race with rtcintr() unless the BIOS disables RTC interrupts.

Submitted by:	bde (including commit message)
MFC after:	1 week
2002-10-17 13:55:39 +00:00
Mitsuru IWASAKI
c42946c4c1 Add new syscons option SC_NO_SUSPEND_VTYSWITCH.
This disables vty switch during suspend/resume.
2002-10-17 07:04:31 +00:00
Poul-Henning Kamp
8b7f9bdcdf Put an XXX: comment here to point out a couple of free() issues on
pnp_read_bytes().

Spotted by:	FlexeLint
2002-10-16 10:40:43 +00:00
Poul-Henning Kamp
633eb1fc9e No need to declare M_ISADEV here.
Spotted by:	FlexeLint.
2002-10-16 10:38:48 +00:00
Poul-Henning Kamp
6dbb527e47 Properly put macro args in ().
Spotted by:	FlexeLint.
2002-10-16 09:07:30 +00:00
John Baldwin
63e30378bc - Use __BUS_ACCESSOR() to define the ISA ivar accessor functions instead of
homerolling our own version.
- Rename the enum for memsize from ISA_IVAR_MSIZE to ISA_IVAR_MEMSIZE
  since using 'MSIZE' in the macro invocation of ISA_ACCESSOR() conflicts
  with the 'MSIZE' kernel option.  The accessor function is still
  isa_get_msize().
2002-10-15 00:02:51 +00:00
Poul-Henning Kamp
42117b6c4d Fix a probably rare and inconsequential memory leak.
Spotted by:	FlexeLint
2002-10-02 20:29:54 +00:00
Poul-Henning Kamp
c91a63aa2c Add support for DIOCGMEDIASIZE and DIOCGSECTORSIZE.
Remove all traces of disklabel.

Sponsored by:	DARPA & NAI Labs.
2002-09-30 13:53:22 +00:00
Poul-Henning Kamp
419f39ce0f Prefix private BIO commands with "FD" so people get a hint that they
are in fact private.

Sponsored by:	DARPA & NAI Labs.
2002-09-30 13:42:06 +00:00
Poul-Henning Kamp
f46708e081 Don't leak memory in case device_add_child_ordered() returns NULL.
Found by:	FlexeLint
2002-09-30 07:56:12 +00:00
Yoshihiro Takahashi
7698537b29 Added some buggy PC-98 PnP cards support. 2002-09-29 13:31:26 +00:00
Poul-Henning Kamp
37c841831f Be consistent about "static" functions: if the function is marked
static in its prototype, mark it static at the definition too.

Inspired by:    FlexeLint warning #512
2002-09-28 17:15:38 +00:00
John Baldwin
c1e309b38b Argh, isa(4), eisa(4) and mca(4) now attach to legacy(4) instead of
nexus(4) in the case of machines w/o equivalent bridges on a PCI bus.

Reported by:	winter
Pointy hat to:	jhb
2002-09-26 18:40:06 +00:00
Poul-Henning Kamp
bc8c3c3e37 Fix a 3 year old oversight: Remove the #ifdef/#endif pair now that there
is nothing between them anymore.

Spotted by:	peter.
2002-09-21 07:59:06 +00:00
Poul-Henning Kamp
f90c382c0c Make FreeBSD "struct disklabel" agnostic, step 311 of 723:
Rename diskerr() to disk_err() for naming consistency.

Drop the by now entirely useless struct disklabel argument.

Add a flag argument for new-line termination.

Fix a couple of printf-format-casts to %j instead of %l.

Correctly print the name of all bio commands.

Move the function from subr_disklabel.c to subr_disk.c,
and from <sys/disklabel.h> to <sys/disk.h>.

Use the new disk_err() throughout, #include <sys/disk.h> as needed.

Bump __FreeBSD_version for the sake of the aac disk drivers #ifdefs.

Remove unused disklabel members of softc for aac, amr and mlx, which seem
to originally have been intended for diskerr() use, but which only rotted
and got Copy&Pasted at least two times to many.

Sponsored by:   DARPA & NAI Labs.
2002-09-20 12:52:03 +00:00
Mitsuru IWASAKI
076ef4620b Restore status register A of RTC at resume time.
This should fix the 'too many RTC interrupts and statclock seems
broken after resume' problem.

MFC after:	1 week
2002-09-18 07:34:04 +00:00
Poul-Henning Kamp
c3bdb2f779 Suitably shrink a comment so it applies again.
Submitted by:	bde
2002-09-15 21:25:55 +00:00
Poul-Henning Kamp
02aad38c79 Fix a bug were a struct bio was freed and certain members subsequently
examined.  Use biowait() instead of DIY.
2002-09-13 11:37:38 +00:00
Joerg Wunsch
9a5e3ddb2d Pass the physical instead of the logical block number in
bp->bio_pblkno.  Otherwise, all formats not using 512 byte
physical sectors got screwed.
2002-09-12 20:53:50 +00:00
Mitsuru IWASAKI
9c4d34df76 Add suspend/resume method to syscons. This switch the mode
(text <-> graphics) by changing current vty during ACPI
sleep/wakeup (maybe APM also).
2002-08-25 18:35:44 +00:00
Philippe Charnier
93b0017f88 Replace various spelling with FALLTHROUGH which is lint()able 2002-08-25 13:23:09 +00:00
Mark Peek
5e3939b59b Clock frequencies reported by sysctl should be unsigned values. Discovered
when machdep.tsc_freq returned a negative number on a 2.2GHz Xeon.

Submitted by:	Brian Harrison <bharrison@ironport.com>
Reviewed by:	phk
MFC after:	1 week
2002-06-22 16:30:18 +00:00
Joerg Wunsch
a2642c4d67 After some comments from bde, rewrite the loops to avoid turning the
previously used "micro-optimization" (count-down loop) into a
pessimization.  Now the loops are written in the more natural count-up
form.

Also, while being there, i made the logic in out_fdc() similar to the
logic in in_fdc().  The old implementation was a bit bogus anyway
since it first tested the DIO bit and only afterwards the RQM bit.
However, according to the description of the i82077, the DIO bit is
only guaranteed to be valid once the RQM bit is set.  Thus, the old
implementatoin would have had the chance to misbehave on a controller
that is implemented in accordance with the i82077 description (but is
not bug-for-bug compatible).

MFC after:	3 days
2002-05-14 21:28:45 +00:00
Joerg Wunsch
8a0ba81859 style(9) changes before further editing that region:
. add unnecessary parenthesis around return values
. put body of an "if" statement onto a line of its own
2002-05-13 10:28:20 +00:00
Joerg Wunsch
5613959d84 Hide the fd autoselection messages behind the bootverbose case so they
stop bothering people on their consoles.
2002-05-12 17:17:46 +00:00
Joerg Wunsch
cb38bb6c36 Increase the PIO timeout to approximately the value it used to have
before rev 1.229 (~ 100 ms).  According to bde, some (old) broken
hardware could require it.  In order to make timing more accurate than
what could be achieved with a loop around DELAY(1), increase loop
timing after the initial ~ 1 ms.

Also, move the declaration of FDSTS_TIMEOUT out from fdreg.h into fd.c
where it actually belongs to.

MFC after:	2 days
2002-05-12 15:24:21 +00:00
Joerg Wunsch
d0900d6bc0 Change the PIO loops from a hard counter into a loop that calls DELAY()
in each cycle, with a tunable max cycle count defined in fdreg.h.

This is said to fix the problem on some Compaq hardware (and perhaps
on other machines using the Natsemi PC87317 chip) where the fdc(4)
driver failed to operate at all.

PR:		kern/21397
Submitted by:	Jung-uk Kim <jkim@niksun.com>
MFC after:	3 days
2002-05-10 17:56:39 +00:00
Poul-Henning Kamp
2266fe776e Don't export timecounter structures under debug. with sysctl, they
contain no truly interesting data anymore.
2002-04-30 19:34:31 +00:00
Poul-Henning Kamp
7e2d76ff05 Remove the tc_update() function. Any frequency change to the
timecounter will be used starting at the next second, which is
good enough for sysctl purposes.  If better adjustment is needed
the NTP PLL should be used.
2002-04-26 10:06:26 +00:00
Poul-Henning Kamp
2ce7d7a033 GC various bits and pieces of USERCONFIG from all over the place. 2002-04-09 11:18:46 +00:00
Joerg Wunsch
84954bb898 When reading a UFS-style label from a floppy, don't attempt to use a
"raw partition" of any kind since the floppy driver doesn't support
UFS-style partitions at all.

Reported by:	"Crist J. Clark" <crist.clark@attbi.com>
Reviewed by:	bde
MFC after:	3 days
2002-04-02 18:29:43 +00:00
John Baldwin
44731cab3b Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00
Matthew Dillon
d74ac6819b Compromise for critical*()/cpu_critical*() recommit. Cleanup the interrupt
disablement assumptions in kern_fork.c by adding another API call,
cpu_critical_fork_exit().  Cleanup the td_savecrit field by moving it
from MI to MD.  Temporarily move cpu_critical*() from <arch>/include/cpufunc.h
to <arch>/<arch>/critical.c (stage-2 will clean this up).

Implement interrupt deferral for i386 that allows interrupts to remain
enabled inside critical sections.  This also fixes an IPI interlock bug,
and requires uses of icu_lock to be enclosed in a true interrupt disablement.

This is the stage-1 commit.  Stage-2 will occur after stage-1 has stabilized,
and will move cpu_critical*() into its own header file(s) + other things.
This commit may break non-i386 architectures in trivial ways.  This should
be temporary.

Reviewed by:	core
Approved by:	core
2002-03-27 05:39:23 +00:00
Poul-Henning Kamp
d306122d60 Push BIO_FORMAT into a local hack inside the floppy drivers where
it belongs.
2002-03-26 19:16:37 +00:00
Nicolas Souchu
ddd22fb7fb Restore the original copyright 2002-03-23 15:36:13 +00:00
Alfred Perlstein
89c9a48352 Remove __P. 2002-03-20 07:51:46 +00:00
Alfred Perlstein
14e10f9952 Remove __P. 2002-03-20 05:14:42 +00:00
Alfred Perlstein
85f190e4d1 Fixes to make select/poll mpsafe.
Problem:
  selwakeup required calling pfind which would cause lock order
  reversals with the allproc_lock and the per-process filedesc lock.
Solution:
  Instead of recording the pid of the select()'ing process into the
  selinfo structure, actually record a pointer to the thread.  To
  avoid dereferencing a bad address all the selinfo structures that
  are in use by a thread are kept in a list hung off the thread
  (protected by sellock).  When a selwakeup occurs the selinfo is
  removed from that threads list, it is also removed on the way out
  of select or poll where the thread will traverse its list removing
  all the selinfos from its own list.

Problem:
  Previously the PROC_LOCK was used to provide the mutual exclusion
  needed to ensure proper locking, this couldn't work because there
  was a single condvar used for select and poll and condvars can
  only be used with a single mutex.
Solution:
  Introduce a global mutex 'sellock' which is used to provide mutual
  exclusion when recording events to wait on as well as performing
  notification when an event occurs.

Interesting note:
  schedlock is required to manipulate the per-thread TDF_SELECT
  flag, however if given its own field it would not need schedlock,
  also because TDF_SELECT is only manipulated under sellock one
  doesn't actually use schedlock for syncronization, only to protect
  against corruption.

Proc locks are no longer used in select/poll.

Portions contributed by: davidc
2002-03-14 01:32:30 +00:00
Takanori Watanabe
03b8237df8 Add SONY VAIO psm controller ISA-PnP ID. 2002-03-10 12:22:17 +00:00
Matthew Dillon
181df8c9d4 revert last commit temporarily due to whining on the lists. 2002-02-26 20:33:41 +00:00
Matthew Dillon
f96ad4c223 STAGE-1 of 3 commit - allow (but do not require) interrupts to remain
enabled in critical sections and streamline critical_enter() and
critical_exit().

This commit allows an architecture to leave interrupts enabled inside
critical sections if it so wishes.  Architectures that do not wish to do
this are not effected by this change.

This commit implements the feature for the I386 architecture and provides
a sysctl, debug.critical_mode, which defaults to 1 (use the feature).  For
now you can turn the sysctl on and off at any time in order to test the
architectural changes or track down bugs.

This commit is just the first stage.  Some areas of the code, specifically
the MACHINE_CRITICAL_ENTER #ifdef'd code, is strictly temporary and will
be cleaned up in the STAGE-2 commit when the critical_*() functions are
moved entirely into MD files.

The following changes have been made:

	* critical_enter() and critical_exit() for I386 now simply increment
	  and decrement curthread->td_critnest.  They no longer disable
	  hard interrupts.  When critical_exit() decrements the counter to
	  0 it effectively calls a routine to deal with whatever interrupts
	  were deferred during the time the code was operating in a critical
	  section.

	  Other architectures are unaffected.

	* fork_exit() has been conditionalized to remove MD assumptions for
	  the new code.  Old code will still use the old MD assumptions
	  in regards to hard interrupt disablement.  In STAGE-2 this will
	  be turned into a subroutine call into MD code rather then hardcoded
	  in MI code.

	  The new code places the burden of entering the critical section
	  in the trampoline code where it belongs.

	* I386: interrupts are now enabled while we are in a critical section.
	  The interrupt vector code has been adjusted to deal with the fact.
	  If it detects that we are in a critical section it currently defers
	  the interrupt by adding the appropriate bit to an interrupt mask.

	* In order to accomplish the deferral, icu_lock is required.  This
	  is i386-specific.  Thus icu_lock can only be obtained by mainline
	  i386 code while interrupts are hard disabled.  This change has been
	  made.

	* Because interrupts may or may not be hard disabled during a
	  context switch, cpu_switch() can no longer simply assume that
	  PSL_I will be in a consistent state.  Therefore, it now saves and
	  restores eflags.

	* FAST INTERRUPT PROVISION.  Fast interrupts are currently deferred.
	  The intention is to eventually allow them to operate either while
	  we are in a critical section or, if we are able to restrict the
	  use of sched_lock, while we are not holding the sched_lock.

	* ICU and APIC vector assembly for I386 cleaned up.  The ICU code
	  has been cleaned up to match the APIC code in regards to format
	  and macro availability.  Additionally, the code has been adjusted
	  to deal with deferred interrupts.

	* Deferred interrupts use a per-cpu boolean int_pending, and
	  masks ipending, spending, and fpending.  Being per-cpu variables
	  it is not currently necessary to lock; bus cycles modifying them.

	  Note that the same mechanism will enable preemption to be
	  incorporated as a true software interrupt without having to
	  further hack up the critical nesting code.

	* Note: the old critical_enter() code in kern/kern_switch.c is
	  currently #ifdef to be compatible with both the old and new
	  methodology.  In STAGE-2 it will be moved entirely to MD code.

Performance issues:

	One of the purposes of this commit is to enhance critical section
	performance, specifically to greatly reduce bus overhead to allow
	the critical section code to be used to protect per-cpu caches.
	These caches, such as Jeff's slab allocator work, can potentially
	operate very quickly making the effective savings of the new
	critical section code's performance very significant.

	The second purpose of this commit is to allow architectures to
	enable certain interrupts while in a critical section.  Specifically,
	the intention is to eventually allow certain FAST interrupts to
	operate rather then defer.

	The third purpose of this commit is to begin to clean up the
	critical_enter()/critical_exit()/cpu_critical_enter()/
	cpu_critical_exit() API which currently has serious cross pollution
	in MI code (in fork_exit() and ast() for example).

	The fourth purpose of this commit is to provide a framework that
	allows kernel-preempting software interrupts to be implemented
	cleanly.  This is currently used for two forward interrupts in I386.
	Other architectures will have the choice of using this infrastructure
	or building the functionality directly into critical_enter()/
	critical_exit().

	Finally, this commit is designed to greatly improve the flexibility
	of various architectures to manage critical section handling,
	software interrupts, preemption, and other highly integrated
	architecture-specific details.
2002-02-26 17:06:21 +00:00
Alfred Perlstein
0077e8223b Fix style bugs:
Missing `const' qualifier.
Initialization in declaration.

Submitted by: mike
2002-02-24 23:24:01 +00:00
Alfred Perlstein
b2e4739f7e Give a little more information as to why pnp configuration of a device
may have failed.

Submitted by: Terry Lambert <tlambert2@mindspring.com>
2002-02-24 22:27:54 +00:00
Poul-Henning Kamp
817988be19 Disksort will not "munge" requests, BIO_ORDERED or not, so remove
use of BIO_ORDERED.
2002-02-22 09:14:06 +00:00
Seigo Tanimura
38b968c3a5 - Do not hang if the resource allocation fails.
- Add another quirk entry of SB AWE64.

PR:		kern/32530
Submitted by:	Magnus Backstrom <b@etek.chalmers.se>
2002-02-05 06:52:56 +00:00
Bruce Evans
586079cc26 Don't include <isa/isavar.h> or compile code depending on it when isa
is not configured.  Including <isa/isavar.h> when it is not used is
harmful as well as bogus, since it includes "isa_if.h" which is not
generated when isa is not configured.

This was fixed in 1999 but was broken by unconditionalizing PNPBIOS.
2002-01-30 12:41:12 +00:00
Thomas Moestl
01f1aed259 Use the new resource_list_print_type() function.
Pass the bus device to isa_init() (this is needed for the sparc64
version).
2001-12-21 21:54:56 +00:00
John Baldwin
98f9879242 Introduce a standard name for the lock protecting an interrupt controller
and it's associated state variables: icu_lock with the name "icu".  This
renames the imen_mtx for x86 SMP, but also uses the lock to protect
access to the 8259 PIC on x86 UP.  This also adds an appropriate lock to
the various Alpha chipsets which fixes problems with Alpha SMP machines
dropping interrupts with an SMP kernel.
2001-12-20 23:48:31 +00:00
Sheldon Hearn
604fb1c032 Add another PS2 PNP id.
PR:		32973
Submitted by:	KT Sin <ktsin@acm.org>
2001-12-19 13:32:21 +00:00
Joerg Wunsch
038d1bbd1a Change the test for _MACHINE_ARCH == i386 into #ifdef __i386__ since it
otherwise breaks on the Alpha arch.  I think this is wrong since i'd
actually like to probe for a PC architecture, not for a particular CPU
type.  Anyway, now it's again the way it used to be.
2001-12-18 22:16:33 +00:00
Yoshihiro Takahashi
5229d0a11d Remove PC98 code. This file is not used by PC98. 2001-12-16 05:37:22 +00:00
Joerg Wunsch
1a6bed6863 Long promised major enhancement set for the floppy disk driver:
. The main device node now supports automatic density selection for
  commonly used media densities.  So you can stuff your 1.44 MB and
  720 KB media into your drive and just access /dev/fd0, no questions
  asked.  It's all that easy, isn't it? :)

. Device density handling has been completely overhauled.  The old way
  of hardwired kernel density knowledge is no longer there.  Instead,
  the kernel now implements 16 subdevices per drive.  The first
  subdevice uses automatic density selection, while the remaining 15
  devices are freely programmable.  They can be assigned an arbitrary
  name of the form /dev/fd[:digit]+.[:digit:]{1,4}, where the second
  number is meant to either implement device names that are mnemonic
  for their raw capacity (as it used to be), or they can alternatively
  be created as "anonymous" devices like fd0.1 through fd0.15,
  depending on the taste of the administrator.  After creating a
  subdevice, it is initialized to the maximal native density of the
  respective drive type, so it needs to be customized for other
  densities by using fdcontrol(8).  Pseudo-partition devices (fd0a
  through fd0h) are still supported as symlinks.

. The old hack to use flags 0x1 to always assume drive 0 were there is
  no longer supported; this is now supposed to be done by wiring the
  devices down from the loader via device flags.  On IA32
  architectures, the first two drives are looked up in the CMOS
  configuration records though.  On PCMCIA (i. e., the Y-E Data
  controller of the Toshiba Libretto), a single drive is always
  assumed.

. Other specialities like disabling the FIFO and not probing the drive
  at boot-time are selected by per-controller or per-drive flags, too.

. Unit attentions (media has been changed) are supposed to be detected
  now; density autoselection only occurs after a unit attention.  (Can
  be turned off by a per-drive flag, this will cause each Fdopen() to
  perform the autoselection.)

. FM floppies can be handled now (on controllers that actually support
  it -- not all do these days).

. Fdopen() can be told to avoid density selection by setting
  O_NONBLOCK; this leaves the descriptor in a half-opened state where
  only a few ioctls are accepted.  This is necessary to run fdformat
  on a device that uses automatic density selection (since you cannot
  autoselect on an unformatted medium, obviously).

. Just differentiate between a plain old NE765 and the enhanced chips,
  but don't try more; the existing code was wrong and only misdetected
  the chips anyway.

BUGS and TODOs:

. All documentation update still needs to be done.

. Formatting not-so-standard format yields unpredictable results; i
  have yet to figure out why this happens.  "Standard" formats like
  720 and 1440 KB do work, however.

. rc scripts are needed to setup device nodes with nonstandard
  densities (like the old /dev/fdN.MMM we used to have).

. Obtaining device flags from the kernel environment doesn't work yet,
  thus currently only drives that are present in (IA32) CMOS are
  really detected.  Someone who knows the odds and ends about device
  flags is needed here, i can't figure out what i'm doing wrong.

. 2.88 MB still needs to be done.
2001-12-15 19:09:04 +00:00
David E. O'Brien
6e551fb628 Update to C99, s/__FUNCTION__/__func__/,
also don't use ANSI string concatenation.
2001-12-10 08:09:49 +00:00
Warner Losh
c74f37cea7 Moved to dev/joy 2001-12-05 09:10:47 +00:00
Mitsuru IWASAKI
f9390180fe Some fix for the recent apm module changes.
- Now that apm loadable module can inform its existence to other kernel
   components  (e.g. i386/isa/clock.c:startrtclock()'s TCS hack).
 - Exchange priority of SI_SUB_CPU and SI_SUB_KLD for above purpose.
 - Add simple arbitration mechanism for APM vs. ACPI.  This prevents
   the kernel enables both of them.
 - Remove obsolete `#ifdef DEV_APM' related code.
 - Add abstracted interface for Powermanagement operations.  Public apm(4)
   functions, such as apm_suspend(), should be replaced new interfaces.
   Currently only power_pm_suspend (successor of apm_suspend) is implemented.

Reviewed by:	peter, arch@ and audit@
2001-11-01 16:34:07 +00:00