Hopefully this clears up some confusion about the nature of
devclass_get_softc() vs. device_get_softc() as well.
The check against DS_ATTACHED remains as this is not
a change that modifies functionality.
Reviewed by: Peter "in principle" Wemm
a 0 error code. The problem occured with NFSv2 mounts and also with
any NFSv3 mount returning an EEXIST error (which is translated to 0
prior to return). The reply to the rpc only contains the file handle
for the no-error case under NFSv3. The error case under NFSv3 and
all cases under NFSv2 do *not* return the file handle. The fix is
to do a secondary lookup to obtain the file handle and thus be able
to generate a return vnode for the situations where the rpc reply
does not contain the required information.
The bug was originally introduced when VOP_SYMLINK semantics were
changed for -CURRENT. The NFS symlink implementation was not properly
modified to go along with the change despite the fact that three
people reviewed the code. It took four attempts to get the current
fix correct with five people. Is NFS obfuscated? Ha!
Reviewed by: Alfred Perlstein <bright@wintelcom.net>
Testing and Discussion: "Viren R.Shah" <viren@rstcorp.com>, Eivind Eklund <eivind@FreeBSD.ORG>, Ian Dowse <iedowse@maths.tcd.ie>
NGM_BINARY2ASCII, which convert control messages to ASCII and back.
This allows control messages to be sent and received in ASCII form
using ngctl(8), which makes ngctl a lot more useful.
This also allows all the type-specific debugging code in libnetgraph
to go away -- instead, we just ask the node itself to do the ASCII
translation for us.
Currently, all generic control messages are supported, as well as
messages associated with the following node types: async, cisco,
ksocket, and ppp.
See /usr/share/examples/netgraph/ngctl for an example of using this.
Also give ngctl(8) the ability to print out incoming data and
control messages at any time. Eventually nghook(8) may be subsumed.
Several other misc. bug fixes.
Reviewed by: julian
rather than an "it's mine!" so that other newbus-aware drivers can
bid for the device too. This should allow the sym driver to out-bid
the ncr driver for devices it supports without having to modify ncr.c
at all. ncr would then function as a catch-all.
Support for TDK LAC-CF010 by Ichiro Fukuhara
(ichiro@ichiro.org) on kern/8900 ichiro test TDK CF Card on
Opensource matsuri,tokyo and send patch to us. thanx.
In combination with Doug's recent alpha_cpu.h, this reduces the cost
of ipl raising/lowering significantly. This is most pronounced when
doing file reads.
Reviewed by: dfr
specific instructions such as rpcc and mb. This should provide some
performance improvements and will allow me to delete the file pal.s.
To allow people time to update their loadable modules, I will leave pal.s
alone for now.
On UDMA CRC errors retry operation as it might be a fluke, if not fall
back to PIO mode on the failing drive. If you get alot of these your
cabeling is most likely not good enough.
On HARD error using DMA, retry once using PIO, if it succeds using PIO
fall back to PIO mode on the failing drive.
Make sure we read a likely value from the PIIX timecounter.
This should fix a large fraction of the "calcru: negative time"
warnings produced by SMP machines.
Another hole in one by: bde
Didn't belive Bruce: phk
pcic_attach_sockets. Rework bus width probe mapping and unmapping to
use the newbus bus_{allocate,release}_resource with a rid of 1 to work
on FreeBSD. Remove a few now unneeded #includes.
it would work), or a specialized one. Most of these have been
creatively stolen from pccard_nkb, which in turn stole from isa
showing that generic bus_ versions of bus_{set,get,delete}_resource
might be profitable.
Fix a couple of minor bugs introduced in the last round of updates
from NetBSD.
Start on the pccard_ivar structure which will hold the resources and
slot number.
Add tcic as a possible attachment for pccard and rename the attachment
for pcicx to pcic since the name has changed since I originally wrote
this stuff.
Next up:
stringing together the various memory and I/O
allocation/mapping primitives in i82365.c, final touches on the isa
attach routine and other fun stuff in that line of attach.
what it is.
Be more correct in unbusying the mountpoint (especially before freeing it).
Remove support for mounting 'r' devices as root. You don't mount 'r'
devices anywhere else, and they're going away anyway.
Submitted by: bde
socket attach code. We now have at least a chance for pccard devices
appearing in the future.
This is a snapshot of ongoing work. Proceed at your own risk.
- more req[uest]->xfer changes.
- get the corresponding NetBSD Id's right
ohci.c
- move untimeout above print statement
- remove usb_delay that panics the system (tsleep in intr context) when
ohcidebug > 5.
ugen.c
- create the devices for endpoints with make_dev.
uhub.c
- change from using usbdebug to uhubdebug
- add more debugging statements
files (opt_*.h) automatically (if they are in ${SRCS}).
Clean vnode_if.[ch] automatically (if one of them is in ${SRCS}, not just
if VFS_KLD is defined).
There are some complications to avoid using the "@" symlink before it
is built.
(kern.randompid), which is currently defaulted off. Use ARC4 (RC4) for our
random number generation, which will not get me executed for violating
crypto laws; a Good Thing(tm).
Reviewed and Approved by: bde, imp
commit to kern_synch.c:
----------------------------
revision 1.55
date: 1999/02/23 02:56:03; author: ross; state: Exp; lines: +39 -10
Scheduler bug fixes and reorganization
* fix the ancient nice(1) bug, where nice +20 processes incorrectly
steal 10 - 20% of the CPU, (or even more depending on load average)
* provide a new schedclk() mechanism at a new clock at schedhz, so high
platform hz values don't cause nice +0 processes to look like they are
niced
* change the algorithm slightly, and reorganize the code a lot
* fix percent-CPU calculation bugs, and eliminate some no-op code
=== nice bug === Correctly divide the scheduler queues between niced and
compute-bound processes. The current nice weight of two (sort of, see
`algorithm change' below) neatly divides the USRPRI queues in half; this
should have been used to clip p_estcpu, instead of UCHAR_MAX. Besides
being the wrong amount, clipping an unsigned char to UCHAR_MAX is a no-op,
and it was done after decay_cpu() which can only _reduce_ the value. It
has to be kept <= NICE_WEIGHT * PRIO_MAX - PPQ or processes can
scheduler-penalize themselves onto the same queue as nice +20 processes.
(Or even a higher one.)
=== New schedclk() mechansism === Some platforms should be cutting down
stathz before hitting the scheduler, since the scheduler algorithm only
works right in the vicinity of 64 Hz. Rather than prescale hz, then scale
back and forth by 4 every time p_estcpu is touched (each occurance an
abstraction violation), use p_estcpu without scaling and require schedhz
to be generated directly at the right frequency. Use a default stathz (well,
actually, profhz) / 4, so nothing changes unless a platform defines schedhz
and a new clock. Define these for alpha, where hz==1024, and nice was
totally broke.
=== Algorithm change === The nice value used to be added to the
exponentially-decayed scheduler history value p_estcpu, in _addition_ to
be incorporated directly (with greater wieght) into the priority calculation.
At first glance, it appears to be a pointless increase of 1/8 the nice
effect (pri = p_estcpu/4 + nice*2), but it's actually at least 3x that
because it will ramp up linearly but be decayed only exponentially, thus
converging to an additional .75 nice for a loadaverage of one. I killed
this, it makes the behavior hard to control, almost impossible to analyze,
and the effect (~~nothing at for the first second, then somewhat increased
niceness after three seconds or more, depending on load average) pointless.
=== Other bugs === hz -> profhz in the p_pctcpu = f(p_cpticks) calcuation.
Collect scheduler functionality. Try to put each abstraction in just one
place.
----------------------------
The details are a little different in FreeBSD:
=== nice bug === Fixing this is the main point of this commit. We use
essentially the same clipping rule as NetBSD (our limit on p_estcpu
differs by a scale factor). However, clipping at all is fundamentally
bad. It gives free CPU the hoggiest hogs once they reach the limit, and
reaching the limit is normal for long-running hogs. This will be fixed
later.
=== New schedclk() mechanism === We don't use the NetBSD schedclk()
(now schedclock()) mechanism. We require (real)stathz to be about 128
and scale by an extra factor of 2 compared with NetBSD's statclock().
We scale p_estcpu instead of scaling the clock. This is more accurate
and flexible.
=== Algorithm change === Same change.
=== Other bugs === The p_pctcpu bug was fixed long ago. We don't try as
hard to abstract functionality yet.
Related changes: the new limit on p_estcpu must be exported to kern_exit.c
for clipping in wait1().
Agreed with by: dufault
commit to kern_synch.c:
----------------------------
revision 1.55
date: 1999/02/23 02:56:03; author: ross; state: Exp; lines: +39 -10
Scheduler bug fixes and reorganization
* fix the ancient nice(1) bug, where nice +20 processes incorrectly
steal 10 - 20% of the CPU, (or even more depending on load average)
* provide a new schedclk() mechanism at a new clock at schedhz, so high
platform hz values don't cause nice +0 processes to look like they are
niced
* change the algorithm slightly, and reorganize the code a lot
* fix percent-CPU calculation bugs, and eliminate some no-op code
=== nice bug === Correctly divide the scheduler queues between niced and
compute-bound processes. The current nice weight of two (sort of, see
`algorithm change' below) neatly divides the USRPRI queues in half; this
should have been used to clip p_estcpu, instead of UCHAR_MAX. Besides
being the wrong amount, clipping an unsigned char to UCHAR_MAX is a no-op,
and it was done after decay_cpu() which can only _reduce_ the value. It
has to be kept <= NICE_WEIGHT * PRIO_MAX - PPQ or processes can
scheduler-penalize themselves onto the same queue as nice +20 processes.
(Or even a higher one.)
=== New schedclk() mechansism === Some platforms should be cutting down
stathz before hitting the scheduler, since the scheduler algorithm only
works right in the vicinity of 64 Hz. Rather than prescale hz, then scale
back and forth by 4 every time p_estcpu is touched (each occurance an
abstraction violation), use p_estcpu without scaling and require schedhz
to be generated directly at the right frequency. Use a default stathz (well,
actually, profhz) / 4, so nothing changes unless a platform defines schedhz
and a new clock. Define these for alpha, where hz==1024, and nice was
totally broke.
=== Algorithm change === The nice value used to be added to the
exponentially-decayed scheduler history value p_estcpu, in _addition_ to
be incorporated directly (with greater wieght) into the priority calculation.
At first glance, it appears to be a pointless increase of 1/8 the nice
effect (pri = p_estcpu/4 + nice*2), but it's actually at least 3x that
because it will ramp up linearly but be decayed only exponentially, thus
converging to an additional .75 nice for a loadaverage of one. I killed
this, it makes the behavior hard to control, almost impossible to analyze,
and the effect (~~nothing at for the first second, then somewhat increased
niceness after three seconds or more, depending on load average) pointless.
=== Other bugs === hz -> profhz in the p_pctcpu = f(p_cpticks) calcuation.
Collect scheduler functionality. Try to put each abstraction in just one
place.
----------------------------
The details are a little different in FreeBSD:
=== nice bug === Fixing this is the main point of this commit. We use
essentially the same clipping rule as NetBSD (our limit on p_estcpu
differs by a scale factor). However, clipping at all is fundamentally
bad. It gives free CPU the hoggiest hogs once they reach the limit, and
reaching the limit is normal for long-running hogs. This will be fixed
later.
=== New schedclk() mechanism === We don't use the NetBSD schedclk()
(now schedclock()) mechanism. We require (real)stathz to be about 128
and scale by an extra factor of 2 compared with NetBSD's statclock().
We scale p_estcpu instead of scaling the clock. This is more accurate
and flexible.
=== Algorithm change === Same change.
=== Other bugs === The p_pctcpu bug was fixed long ago. We don't try as
hard to abstract functionality yet.
Related changes: the new limit on p_estcpu must be exported to kern_exit.c
for clipping in wait1().
Agreed with by: dufault
X server, is not responding to the VT switching protocol. (This part
of the code has been somewhat wrong in -CURRENT, but -STABLE has the
correct code...)
PCI SCSI controllers. This driver also supports the following Symbios/LSI
PCI SCSI chips: 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895.
However, it does NOT support earlier chips as the following ones: 53C810,
53C815, 53C825.
See README.sym for more details.
Submitted-by: Gerard Roudier <groudier@club-internet.fr>
and extend. The new function containing the code is named schedclock()
as in NetBSD, but it has slightly different semantics (it already handles
incrementation of p->p_cpticks, and it should handle any calling frequency).
Agreed with in principle by: dufault
Add MD_ROOT and MD_ROOT_SIZE options to the md driver.
Make the md driver handle MFS_ROOT and MFS_ROOT_SIZE options for compatibility.
Add md driver to GENERIC, PCCARD and LINT.
This is a cleanup which removes the need for some of the worse hacks in
MFS: We really want to have a rootvnode but MFS on a preloaded image
doesn't really have one. md is a true device, so it is less trouble.
This has been tested with make release, and if people remember to add
the "md" pseudo-device to their kernels, PicoBSD should be just fine
as well. If people have no other use for MFS, it can be removed from
the kernel.
- Convert to new bus attachment scheme. Thanks to Blaz Zupan for doing
the initial work here. One thing I changed was to have the attach
and detach routines work like the PCI drivers, which means that in
theory you should be able to load and unload the driver like the PCI
NIC drivers, however the pccard support for this hasn't settled down
yet so it doesn't quite work. Once the pccard work is done, I'll have
to revisit this.
- Add device wi0 to PCCARD. If we're lucky, people should be able to
install via their WaveLAN cards now.
- Add support for signal strength caching. The wicontrol utility has
also been updated to allow zeroing and displaying the signal strength
cache.
- Add a /sys/modules/wi directory and fix a Makefile to builf if_wi.ko.
Currently this module is only built for the i386 platform, though once
the pccard stuff is done it should be able to work on the alpha too.
(Theoretically you should be able to plug one of the WaveLAN/IEEE ISA
cards into an alpha with an ISA slot, but we'll see how that turns out.
- Update LINT to use only device wi0. There is no true ISA version of
the WaveLAN/IEEE so we'll never use an ISA attachment.
- Update files.i386 so that if_wi is dependent on card.
from vm_map_pageable(). At the point they called, vm_map_pageable()
holds a read (or shared) lock on the map. The purpose
of vm_map_{clear,set}_recursive() is to disable/enable repeated
write (or exclusive) lock requests by the same process.
- Use 'or' operation to change b_flags.
- SCSI HDD device is 'da', not 'sd'.
Submitted by: kura@tim.hi-ho.ne.jp (Tomohiko Kurahashi) and
chi@bd.mbn.or.jp (Chiharu Shibata)
with NetBSD and the Single Unix Specification v2.
This updates some structures with other, almost equivalent types and
effort is under way to get the whole more consistent.
Also removes a double definition of INET6 and some other clean-ups.
Reviewed by: green, bde, phk
Some part obtained from: NetBSD, SUSv2 specification
by 2 with people just adding numbers on the end of the ethernet subtypes.
We now have an additional 14 subtypes available in ethernet.
Use one of them immediatly for homePNA.
Reviewed by: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
parameter a char ** instead of a const char **. This make these
kernel routines consistent with the corresponding libc userland
routines.
Which is actually 'correct' is debatable, but consistency and
following the spec was deemed more important in this case.
Reviewed by (in concept): phk, bde
is neither IFF_LOOPBACK or IFF_POINTOPOINT. It's quite common
(and probably more correct) to route local IP numbers via lo0
and it makes configuration easier to assign the hostname address
to local POINTOPOINT links too.
This message usually remains hidden because the loopback interface
gets the highest interface number at boot time, but when the
ethernet interface is added later, the message can get pretty
annoying.
Also, fix a typo.
Not objected to by: freebsd-net
we instead use 0(%esp), which is per-cpu, already pretty much
guarenteed to be locked into the cache, and does not stress the cache's
set associativity. invlpg might also be a good choice (suggested by
Ingo).
Obtained from: Linus Torvalds <torvalds@transmeta.com>
MP lock for the last time. The use of a locked instruction to
cpu-private memory is 3x faster then CPUID and 3x faster then the
use of a locked instruction to shared memory (the lock itself).
Instruction serialization is required to ensure that any pending
memory ops are properly flushed prior to the release of the lock,
due to out-of-order instruction execution by the cpu.
Files sysdep.[ch] are now in ${MACHINE_ARCH} subdirectory. Internal
#if's used to identify the platform where removed.
Make rule for target testmain was greatly simplified, because it was
easier simplifying it than changing it to support the new location of
sysdep.[ch].
(a repo-copy was done on sysdep.[ch], of course)
vm_map always failed because vm_map_lookup() looked at
"vm_map_entry->wired_count" instead of "(vm_map_entry->eflags &
MAP_ENTRY_USER_WIRED)". The effect was that many page
wiring operations by sysctl were (silently) failing.
Since an osigcontext is smaller, if you check for a valid (much larger sized)
ucontext_t and it fails, we bogusly would reject the osigcontext as per
rev 1.378. Instead, check for osigcontext range validity first, and
ucontext_t later. This unbreaks Netscape.
Pointed to the right commit by: peter
Semiconductor CS461x/428x.
- Add support for GUS and CS461x/428x pcm.
- Move newpcm drivers for ISA cards to files.i386. The drivers for
PC98 would be something quite different from those for PC/AT.
Moving requested by: nyan
of element [4] in both, which goes beyond the end of the array, leaving
[0], [1], [2], and [3]. This bug did not cause any problems since
the overrun fields are initialized after the bogus array init but
needs to be fixed anyway.
Submitted by: Ian Dowse <iedowse@maths.tcd.ie>
pci_probe_nomatch, so it won't be in the way when loading USB as a module.
The reason for them being there in the first place is that every
motherboard comes with USB kit and this way it looks more pretty (peter).
The real solution will be to define some method of detaching a driver
after it has attached.
for IPv6 yet)
With this patch, you can assigne IPv6 addr automatically, and can reply to
IPv6 ping.
Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
saprevent when we're doing an OFFLINE ioctl- saprevent
won't unlock the door, which then causes the unload to
fail on some units.
If we've already unloaded the tape, don't try and rewind and
unload in saclose. This is a slightly riskier change because
we're now going to depend on SA_FLAG_TAPE_MOUNTED to say whether
we've really unloaded the tape. This involved changing the
setting in sadone for tape errors to SA_FLAG_TAPE_FROZEN (which
is more accurate anyway-if you get an EIO you've probably lost
tape position anyway) where it used to just clear the mounted
flag.
p_trespass(struct proc *p1, struct proc *p2)
which returns zero or an errno depending on the legality of p1 trespassing
on p2.
Replace kern_sig.c:CANSIGNAL() with call to p_trespass() and one
extra signal related check.
Replace procfs.h:CHECKIO() macros with calls to p_trespass().
Only show command lines to process which can trespass on the target
process.
and shiny usbd daemon to handle events.
usb_port.h:
- Add a macro to retrieve the unit number from a USBBASEDEVICE
usb.h, usb_subr.c:
- Add fields to the device_info struct.
usb_subr.c:
- Fill in the new fields.
- Remove the notification of the event up a bit to make sure all the
information is still available to fill the usb_devinfo struct.
This requires recompilation of usbdevs (src/usr.sbin/usbdevs) and the
ezdownload/ezupload (ports/misc/ezload) utilities in any case.
I've made a seperate version (c_index() etc) that use const/const, but
I'm not sure it's worth it considering there is one file in the tree
that uses index on const strings (kern_linker.c) and it's easily adjusted
to scan the strings directly (and is perhaps more efficient that way).
of queue entries have to be at least 16 bits now! If we're running
a 2100 less than rev 5, turn off loop fairness (per Qlogic errata). Fix
typo in checking against 2200 F/W revision. Slightly fix/reorder fabric
login stuff. Change to usage of isp_getrqentry for code clarity. Add some
defensive dual bus assumptions. Various cleanups, etc...
Role the core version minor number. Change the arguments to the dma
setup function to use a u_int16_t for the output request loop pointer
(truly amazing that this hasn't blown up in anyones face so far). Do
some shuffling around of some items.
by Qlogic. The firmware is now also kept from compiling by default
unless some config options are set.
While we're at it, roll the 2200 f/w to 2.01.0. Still need to get the
1.17.26 2100 f/w working as it solves a lot of problems but it doesn't
want to work yet with this driver (:-)).
ISP_COMPILE_1020_FW compile in Qlogic 1020/1040 PCI SCSI f/w
ISP_COMPILE_1080_FW compile in Qlogic 1080/1240/1280 PCI LVD SCSI f/w
ISP_COMPILE_2100_FW compile in Qlogic 2100 Fibre Channel f/w
ISP_COMPILE_2200_FW compile in Qlogic 2200 Fibre Channel f/w
ISP_COMPILE_FW compile in all firmware (overrides the others)
These are not on by default, thus saving about 200KBytes.
Additionally:
SCSI_ISP_WWN to define a WWN to use
out of the PCI CLASS reg and store it in the softc. Use the getenv_quad
function to get a WWN override from the environment. Look for a config
value for same. Make slightly less lame the wwn seed construction.
is documented to be 0x18 in the Adaptec manual, however there appears to
be a newer board rev with code 0x19. I added a #define for this and
updated the probe code so that this board will be properly identified
in the probe messages. (Currently it's just identified generically as
an AIC-6915 chip.)
o Delete pcic1 from NEWCARD
o Add explicit resource hints to pcic0
o Get attach working with newbus, kinda (it does all the newbus stuff,
but doesn't try to attach the pccard yet, too many panics).
o Disable ie0 and le0 in NEWCARD config. There appears to be a bug in
the isa_compat code wrt memory conflicts with newbus drivers for
reasons unknown.
o Minor cleanups.
to use a locked cmpexg when unlocking a lock that we already hold, since
nobody else can touch the lock while we hold it. Second, it is not
necessary to use a locked cmpexg when locking a lock that we already
hold, for the same reason. These changes will allow MP locks to be used
recursively without impacting performance.
Modify two procedures that are called only by assembly and are already
NOPROF entries to pass a critical argument in %edx instead of on the
stack, removing a significant amount of code from the critical path
as a consequence.
Reviewed by: Alfred Perlstein <bright@wintelcom.net>, Peter Wemm <peter@netplex.com.au>
linked list to store the callbak routines. The patch converts the
lists to queue(3) TAILQs, making the code slightly clearer and ensuring
that callbacks are executed in FIFO order.
Man page also updated as necesary.
(discontinued use of M_TEMP malloc type while here anyway /phk)
Submitted by: Jake Burkholder jake@checker.org
PR: 14912
to use a locked cmpexg when unlocking a lock that we already hold, since
nobody else can touch the lock while we hold it. Second, it is not
necessary to use a locked cmpexg when locking a lock that we already
hold, for the same reason. These changes will allow MP locks to be used
recursively without impacting performance.
Modify two procedures that are called only by assembly and are already
NOPROF entries to pass a critical argument in %edx instead of on the
stack, removing a significant amount of code from the critical path
as a consequence.
Reviewed by: Alfred Perlstein <bright@wintelcom.net>, Peter Wemm <peter@netplex.com.au>
was likely to be counted as idle time.
Note that we are counting time spent in software interrupt handlers as
interrupt time, so this invalidates the i386 meaning of intr_nesting_level.
Reviewed by: dfr, bde
Tested by: anderson@cs.duke.edu
ES1371 and ES1373 PCI Audio Sound Chips.
The 1371 and 1373 can be found on newer CreativeLabs/Ensoniq
sound cards such as the SoundBlaster PCI 16,64 and 128.
Submitted by: Russell Cattelan <cattelan@thebarn.com>
Obtained from: Parts obtained from linux, but rewritten by Russell
that breaks if you try and compile a kernel before building world, as
is presently required to get past the signal changes. I don't
particularly like doing this, but at least it will mean that a 'make world'
will activate the gcc 2.95.2-specific option in bsd.kern.mk.
host->pci bridge specifically, then add a pcib0 device on the motherboard
for the pci bus to hang off.
Requested by: Anders Andersson <anders@sanyusan.se>
Obtained from: dfr
