md(8). The former is generally not going to fail, but the latter can
fail when the underlying swap device returns an error.
There are still plenty of other places where vm_pager_get_pages() failing
will lead directly to crashes, so it's a good idea to put your swap on
RAID if you care enough to put any of your disks on RAID....
that conjures up the device node so it isn't true PNP. Noticed by jhb@.
* Add an attachment for esscontrol since it too uses ISA_PNP_PROBE.
* Move an attachment from snd_mss to snd_pnpmss. The latter is the real
PNP user.
* Fix a bug where caches were flushed on non-C3 transitions.
* Be sure a working flush cache instruction is present before using it.
* Disable C3 completely if it isn't present.
may want to shut down here but the chance of BIOS vendors getting this
wrong is high. They're only supposed to announce this when all batteries
hit their critical level but past experience indicates we should be
conservative about this for now.
- Trade off granularity to reduce overhead, since the current model
doesn't appear to reduce contention substantially: move to a single
harvest mutex protecting harvesting queues, rather than one mutex
per source plus a mutex for the free list.
- Reduce mutex operations in a harvesting event to 2 from 4, and
maintain lockless read to avoid mutex operations if the queue is
full.
- When reaping harvested entries from the queue, move all entries from
the queue at once, and when done with them, insert them all into a
thread-local queue for processing; then insert them all into the
empty fifo at once. This reduces O(4n) mutex operations to O(2)
mutex operations per wakeup.
In the future, we may want to look at re-introducing granularity,
although perhaps at the granularity of the source rather than the
source class; both the new and old strategies would cause contention
between different instances of the same source (i.e., multiple
network interfaces).
Reviewed by: markm
be used to announce various system activity.
The auxio device provides auxiliary I/O functions and is found on various
SBus/EBus UltraSPARC models. At present, only front panel LED is
controlled by this driver.
Approved by: jake (mentor)
Reviewed by: joerg
Tested by: joerg
with acpi but the timer runs twice as fast. Note that the main problem
(system doesn't work properly with acpi disabled) should be fixed separately.
Changes:
* Add a quirk to disable the timer
* Merge the P5A and P5A-B quirks since they appear to be based on the
same ASL.
PR: i386/72450
Tested by: Kevin Oberman <oberman es.net>
MFC after: 3 days
This also adds support for bigger disks on the controller I have access to,
and maybe others if I understood the adhoc methods used on those.
Those with more PC98 bigdrive controllers it is hereby invited to add/fix
support for those in geom_pc98.c and not using #ifdef PC98 all over the place.
allocate unallocated memory resources from the top 32MB of the address
space rather than the top 2GB. While the latter works on some
chipsets, it fails badly on others. 32MB is more conservative and
matches what cheap harware from this era is hardwired to pass.
table. acpidump(8) concatenates the body of the DSDT and SSDTs so an
edited ASL will contain all the necessary information. We can't use a
completely empty table since ACPI-CA reports this as a problem.
MFC after: 3 days
+ * 9: 0x3f0-0x3f3,0x3f4-0x3f5,0x3f7
This requires only one change to support. Rather than keying on the
size of the resource being 2, instead key off the end & 7 being 3.
This covers the same cases that the size of 2 would catch, but also
covers the new above case.
In addition, I think it is clearer to use the end in preference to the
size and start for case #8 as well. Turns two tests into one, and
catches no other cases.
Make minor commentary changes to deal with new case #9.
# This change is specifically minimal to allow easy MFC. A more
# extensive change will go into current once I've had a chance to test
# it on a lot of hardware...
data endpoints. The control endpoint doesn't need read/write/poll
operations, and more importantly, the thread counts should be
separate so that the control endpoint can properly reference itself
while deleting and recreating the data endpoints.
* Add some macros that handle referencing/releasing devices, and use them
for sleeping/woken-up and open/close operations as apppropriate.
* Use d_purge for FreeBSD, and a loop testing the open status for all
the endpoints for NetBSD and OpenBSD, so that when the device is
detached, the right thing always happens.
restart the current waiting transfer. If this isn't done, the device's
next transfer (that we would like to do a short read on) is going to
return an error -- for short transfer.
* For bulk transfer endpoints, restore the maximum transfer length each
time a transfer is done, or the first short transfer will make all the
rest that size or smaller.
* Remove impossibilities (malloc(M_WAITOK) == NULL, &var == NULL).
New device names are "{tty|cua}A$(card)$(port)[.init|.lock]"
Put a portname in the port structure if SI_DEBUG is defined to avoid
need to inspect minor number to construct name..
Constify some strings.
Remove duplicated DBG_ #defines.
is a no-op on little endian architectures, but fixes getting the MAC
address for some dc(4) cards on big endian architectures.
This is a RELENG_5 candidate.
Tested by: gallatin (powerpc), marius (sparc64)
First version of the patch written by: gallatin
people have reported problems (stickyness, aiming difficulty) which is proving
difficult to fix, so this will default to disable until sometime after 5.3R.
To enable Synaptics support, set the 'hw.psm.synaptics_support=1' tunable.
MT5 candidate.
Approved by: njl
in the actual _FDE parsing. If the failure occurs earlier such as in
fdc_attach() then don't try to probe any drives.
MFC after: 3 days
Reviewed by: njl
Tested by: Christian Laursen xi at borderworlds dot dk
to make sure the pipe is ready. Some devices apparently don't support
the clear stall command however. So what happens when you issue such
devices a clear stall command? Typically, the command just times out.
This, at least, is the behavior I've observed with two devices that
I own: a Rio600 mp3 player and a T-Mobile Sidekick II.
It used to be that after the timeout expired, the pipe open operation
would conclude and you could still access the device, with the only
negative effect being a long delay on open. But in the recent past,
someone added code to make the timeout a fatal error, thereby breaking
the ability to communicate with these devices in any way.
I don't know exactly what the right solution is for this problem:
presumeably there is some way to determine whether or not a device
supports the 'clear stall' command beyond just issuing one and waiting
to see if it times out, but I don't know what that is. So for now,
I've added a special case to the error checking code so that the
timeout is once again non-fatal, thereby letting me use my two
devices again.
This changes the naming of USB serial devices to: /dev/ttyU%d and
/dev/cuaU%d for call-in and call-out devices respectively. (Please
notice: capital 'U')
Please also note that we now have .init and .lock devices for USB
serial ports. These are not persistent across device removal. devd(8)
can be used to configure them on attachment time.
These changes also improve the chances of the system surviving if
the USB device is unplugged at an inconvenient time. At least we
do not rip things apart while there are any threads in the device
driver anymore.
Remove cdevsw, rely on the tty generic one.
Don't make_dev(), use ttycreate() which does all the magic.
In detach, do close procesing if we ripped things apart
while the device was open. Call ttyfree() once we're done
cleaning up.
select(2), and discovered to my horror that ugen(4)'s bulk in/out support
is horribly lobotomized. Bulk transfers are done using the synchronous
API instead of the asynchronous one. This causes the following broken
behavior to occur:
- You open the bulk in/out ugen device and get a descriptor
- You create some other descriptor (socket, other device, etc...)
- You select on both the descriptors waiting until either one has
data ready to read
- Because of ugen's brokenness, you block in usb_bulk_transfer() inside
ugen_do_read() instead of blocking in select()
- The non-USB descriptor becomes ready for reading, but you remain blocked
on select()
- The USB descriptor becomes ready for reading
- Only now are you woken up so that you can ready data from either
descriptor.
The result is select() can only wake up when there's USB data pending. If
any other descriptor becomes ready, you lose: until the USB descriptor
becomes ready, you stay asleep.
The correct approach is to use async bulk transfers, so I changed
the read code to use the async bulk transfer API. I left the write
side alone for now since it's less of an issue.
Note that the uscanner driver has the same brokenness in it.
to 7422 since it appears that the 8169S can't transmit anything larger..
The 8169S can receive full jumbo frames, but we don't have an mru to let
the upper layers know this...
add fixup so that this driver should work on alignment constrained platforms
(!i386 && !amd64)
MFC after: 5 days
mutexes instead.
This closes the last (known) race issues in ATA which should fix
the various hangs etc seen on heavy loaded systems.
Change from using timeout functions to using callout functions in
the timeout code. This together with above closes the race that could
happen if timeout and device interrupt occured simultaniously.
Also fix the possible recursion in ata_reinit() on very dodgy
devices that could take us down in the probe.
I have from Broadcom does not give much information on these devices,
so the Broadcom Linux driver was used for clues to what these chips
support. It turns out they are similar to the 5705 with the 5751
being the PCI-Express version and needing special work-arounds and
settings.
Use kthread_exit() instead of falling through the end of the worker
thread's main function. Since kthread_exit() wakeup(9)s everyone
sleeping on the thread handle, drop the superfluous wakeup() call.
because it was mostly irrelevant - except for the silly BIOS_PADDRTOVADDR
etc macros. Along the way of working around this, I missed a few things.
* Make syscons properly inherit the bios capslock/shiftlock/etc state like
i386 does. Note that we cannot inherit the bios key repeat rate because
that requires a bios call (which is impossible for us).
* Give syscons the ability to beep on amd64. Oops.
While here, make bios.c compile and add it to files.amd64.
panic on hub detach bugs that have been reported. This work around
detaches the device before deleting it. This changes the detach order
from in-order to pre-order. This avoids uhub's deleting the children
after its subdevs has been deleted.
This is only a workaround. This leads to a strange condition in the
device tree where attached devices are children of detached ones. I
really don't know what that's supposed to mean, but does violate my
sense of POLA. Fortunately, the violation is short lived, which is
why I'm going ahead and committing the work around.
# We really need to consider life w/o the multiple nested layers of
# compatibility macros. They make finding bugs like this *MUCH*
# harder.
Patch by: iadowse
MT5 before: next_release(5.3-BETA5) (unless someting better comes along)
and 0x3f7. fdc_isa_alloc_resource() didn't work right in this case
(it accessed FDOUT correctly due to an overflow of the first resource.
It accesed FDSTS and FDDATA incorrectly via the second resource (which
wound up accessing FDOUT and the tape register at 0x3f3) and badly for
the CTL register (at location 0x3f4). This is a minimal fix that just
'eats' the first one if it covers two locations and has an offset of
0. This confusion lead the floppy driver to think there'd been a disk
change, which uncovered a deadlock in the floppy/geom code which lead
to a panic. These changes fix that by fixing the underlying resource
problem, but doesn't address the potential deadlock issue that might
still be there.
This is a minimal fix so it can more safely be merged into 5 w/o risk
for known working configurations (hence the use of the ugly goto,
which reduces case 8 to case 6 w/o affecting cases 1-7). A more
invasive fix that will handle more ACPI resource list diversity is in
the pipeline that should kill these issues once and for all, while
staying within the resources that we allocate.
Tested/Reported by: das
Reviewed by: njl
MFC before: re->next_release_name(5.3-BETA5);
registers are control bits or depending on the model contain additional
time bits with a different meaning than the lower ones. In order to
only read the desired time bits and not change the upper bits on write
use appropriate masks in the gettime and settime function respectively.
Due to the polarity of the stop oscillator bit and the fact that the
century bits aren't used on sparc64 not masking them didn't cause
problems so far.
- Fix two off-by-one errors in the handling of the day of week. The
genclock code represents the dow as 0 - 6 with 0 being Sunday but the
mk48txx use 1 - 7 with 1 being Sunday. In the settime function when
writing the dow to the clock the range wasn't adjusted accordingly but
the clock apparently played along nicely otherwise the second bug in
the gettime function which mapped 1 - 7 to 0 - 6 but with 0 meaning
Saturday would have been triggered. Fixing these makes the date being
stored in the same format Sun/Solaris uses and cures the "Invalid time
in real time clock. Check and reset the date immediately!" when the
date was set under Solaris prior to booting FreeBSD/sparc64. [1]
Looking at other clock drivers/code e.g. FreeBSD/alpha the former "bug",
i.e. storing the dow as 0 - 6 even when the clock uses 1 - 7, seems to
be common but might be on purpose for compatibility when multi-booting
with other OS which do the same. So it might make sense to add a flag
to handle the dow off-by-one for use of this driver on platforms other
than sparc64.
- Check the state of the battery on mk48txx that support this in the
attach function.
- Add a note that use of the century bit should be implemented but isn't
required at the moment because it isn't used on sparc64.
Problem noted by: joerg [1]
MT5 candidate.
driver. Trim its fingernails by removing some useless bits before
fixing the 'thread not terminated on detach' problem.
o dmacnt is no longer used now that we allocate at attach time. Remove
it from struct fdc_data.
o ISPNP was only ever set, but never tested. It used to be used for the
allocation routines to change how it allocated resources. Since that's
no longer necessary, retire the flag.
o ISPCMICA was only ever tested, but never set. GC it. This removes
a special case in determining the drive type. The drive type is
now set in fdc_pcmcia.c, so the hack isn't needed anymore. Sadly,
this isn't tested with a Y-E Data pcmcia floppy drive because there
are a number of other issues that preclude it from working.
o Fix ifdef for reading from the rtc. I'm of the opinion that this ifdef
should be moved into fdc_isa.c, but not today as ideally there'd be
other fixes to the probing of children. So now we just read it on
i386 ! pc98 (there's no #define for MACHINE_ARCH, just MACHINE, hence
this slightly inelegant kludge) and amd64. The PC98 exclusion likely
isn't meaningful since pc98 uses a different driver, but will be when
merging of the pc98 floppy code into this driver is complete (this is the
other reason I think this block of code belongs outside fdc.c).
All of these changes are safe to MT5.
copper NICs, a link change event is posted whenever MII autopolling is
toggled off and on, which happens whenever someone calls
bge_miibus_readreg() or bge_miibus_writereg() to access the PHY
registers. This means anytime someone called the SIOCGIFMEDIA ioctl
on a bge interface, the link would reset. Even a simple "ifconfig bge0"
would do it, though other apps like dhclient or the PPPoE daemon could
trigger it as well. An obvious symptom of this problem is lots of
"bgeX: gigabit link up" messages appearing on the console for no
apparent reason.
Through experimentation, I determined that when a real link change
event occurs, the BGE_MIMODE_AUTOPOLL in the BGE_MI_MODE register
is always set, so now if we have a copper NIC and an link change
event occurs and the BGE_MIMODE_AUTOPOLL bit is clear, we ignore
the event.
Note that this does not apply to the original BCM5700 chip since we
use a different method for sensing link changes with that chip (the
status block method was broken), nor to fiber optic NICs since they
don't use the GMII PHY access registers.
another way to misinterpret the spec. Also, always fall back to the hints
probe on any attach failure, not just when _FDE fails.
Thanks to imp and scottl for finding this.
Tested by: rwatson (minimally)
MFC after: 5 days
After this change it should be possible to use very big md(4) devices.
- Clean up and simplify the code a bit.
- Use humanize_number(3) to print size of md(4) devices.
- Add 't' suffix which stands for terabyte.
- Make '-S' to really work with all types of devices.
- Other minor changes.
it is only used in one function. While doing so, change its type to
vm_ooffset_t.
We are still limited for swap-backed devices to 16TB on 32-bit architectures
where PAGE_SIZE is 4096 bytes.
This make "_NEC" devices appear as "NEC" which is more corrent.
The reason is tha NEC originally screwed up on the byteorder in the
model string, so now that they have realized that they prefixed the '_'
so that not every ATA driver on the planet would call them "EN C" :)
reserving it at use time is more miserly, low memory (< 16MB)
evaporates quickly on many systems, so there may not be any suitable
buffers available. This specifically doesn't use the newer, fancier
isa_dma_init to ease merging to 5.
Reviewed by: tegge, phk
the firmware status register on the card to see if the firmware is still
running. There is no way to recover from this, but at least it can give
a hint as whether the car has crashed (which happens all too often).
MFC after: 3 days
errors for the attachment process for the floppy controller. This is
a band-aide because it doesn't try any of the fallback methods when
_FDE isn't long enough, but should be sufficient for people
experiencing the dreaded mutex not initialized panic.
problems:
1) Add locking for SMP, code provided by Alan Cox
2) While testing Alan's patches, I observed serious problems with
the jumbo buffer allocation code (machine crashed twice), so I gutted
it and rewrote the receive handler to use multiple chained descriptors.
Each RX descriptor gets a single 2K cluster, and the chip will fill in
as many as it needs to hold the complete packet.
User reports that this corrects the data corruption issues previously
observed and discussed on -current.
Note that this driver still needs to be hit with the busdma stick.
I intend to inflict said beating in the near future.
MFC after: 1 week
o Allow for up to 3 resource I/O ranges to be given for the floppy
controller, rather than just two that are allowed for now.
o Make sure that we can work with either a base address of 0x3f0 or 0x3f2.
o Create new inline functions to access the YE DATA's unique BDCR register.
o Update pccard attachment to add the fd device.
o Do some minor style(9) polishing.
# I'm guessing that the fdc pccard attachment broke some time ago, since
# there are a number of issues with it still.
doesn't do this is beyond me, but that will be investigated later. This
results in programming the chip with the correct frequency, which in turn
allows devices to negotiate up to the full 20MB/s.
calls in sb_cmd2() and sb_getmixer(). The lock has already be grabbed
before these functions are called.
This is a RELENG_5 candidate.
PR: 71189
Submitted by: stephane
MFC after: 3 days
VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY.
The vge driver has been added to GENERIC for i386, pc98 and amd64,
but not to sparc or ia64 since I don't have the ability to test
it there. The vge(4) driver supports VLANs, checksum offload and
jumbo frames.
Also added the lge(4) and nge(4) drivers to GENERIC for i386 and
pc98 since I was in the neighborhood. There's no reason to leave them
out anymore.
holds sndstat_lock across a call to uiomove(), which is not legal
to do with a mutex because of the possibility that the data transfer
could sleep because of a page fault. It is not possible to just
unlock the mutex for the uiomove() call without introducing another
locking mechanism to prevent the body of sndstat_read() from being
re-entered. Converting sndstat_lock to an sx lock is the least
complicated change.
This is a candidate for RELENG_5.
LOR: 030
MFC after: 4 days
redundant at this point and should be retired). Don't free subdevs if
we don't attach any devices. This was leaving stale device_t's
around. Don't touch the device if it isn't attached since the name
isn't meaningful then. Switch from strncpy (properly used) to
strlcpy.
From a patch submitted by Peter Pentchev
device_t instances when no driver attaches. They are left around, and
we need to remember them.
# The usbd_device_handle->subdevs[] array likely is completely bogus
# at this point, but one change at a time, since its removal will need
# to have similar code replace it extracted from newbus.
Part of the patch submitted by Peter Pentchev after an excellent
analysis of the underlying problems.
MFC After: 1 week
produced better results for a test program I had here, it didn't
substantially change the number of crashes that I saw. Both the old
code and the new code seemed to produce the same crashes from the usb
layer. Since the new code also solves a close() crash, go with it
until the underlying issues wrt devices going away can be addressed.
The reference counts are there to block detach until the sleepers in
read/write/ioctl have gotten out, not to prevent the open device from
going away. Restore the old behavior so that we have a chance to wake
up sleepers when the usb device goes away, so they can properly return
EIO back to the caller when this happens.
Otherwise, we have a guarnateed panic waiting to happen when a device
detaches with an active read channel.
This should be merged to 5 asap.
would turn off all fans when initializing a zone. However, the HP Omnibook
500 generates a notify saying the zone needs to be re-evaluated whenever
its fan is switched on or off. This produced an infinite loop. Also, note
that running _SCP can generate the same notify.
Since we need to make sure old fan references are turned off when getting
new ones, run acpi_tz_monitor() first. This will turn off any unneeded
fans. Then, check for new settings. After that, run acpi_tz_monitor()
again to turn on/off any fans referenced by the new settings.
Tested by: brooks
returned and then infer the state from calls to _ON/_OFF. This works
around a problem in systems that don't correctly report the state (i.e.
the HP Omnibook 500 reports "on" for its fan always after it has been
turned on once).
I was unable to test this as the PAE kernel crashed with a "cannot copy
LDT" before coming up. When this gets a bit more testing, I'll fix the PAE
conf file to allow isp devices.
PR: 59728
to RS232 bridges, such as the one found in the DeLorme Earthmate USB GPS
receiver (which is the only device currently supported by this driver).
While other USB to serial drivers in the tree rely heavily on ucom, this
one is self-contained. The reason for that is that ucom assumes that
the bridge uses bulk pipes for I/O, while the Cypress parts actually
register as human interface devices and use HID reports for configuration
and I/O.
The driver is not entirely complete: there is no support yet for flow
control, and output doesn't seem to work, though I don't know if that is
because of a bug in the code, or simply because the Earthmate is a read-
only device.
This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c.
This now marks the interrupt MPSAFE along with making the mutex non-recursive.
Looked over by: bms
In places where we have long delays that doesn't depend on too accurate
timing, use ata_udelay() instead of DELAY() so we dont uselessly spin
the CPU if not nessesary;
It makes no sense in a PAE environment and is impossible to handle correctly.
This case is also never used right now. This should make the iir(4) driver
ready for PAE.
unless ACPI_DEBUG is defined. Users don't typically care about errant
breakpoint instructions. The HP Pavilion 7915 has this in its PCI0
_INI method for rev 0x6040000 of the RSDT.
Removed support for Intel 82541ER
Added fix for 82547 which corrects an issue with Jumbo frames larger than 10k.
Added fix for vlan tagged frames not being properly bridged.
Corrected TBI workaround.
Corrected incorrect LED operation issues
Submitted by: tackerman (Tony Ackerman)
MFC after: 2 weeks
should only affect current resources, it seems best to wait until all
configuration is done before disabling it. If this fixes any problems, it
is a MT5 candidate.
ENOENT when there's no PNP ID for this device node, or ENXIO when there
is one, but it doesn't match.
In the nonPNP case (as most Alpha systems appear to be), we were
treating the error return as an error, when it should be have ignored
it. Version 1.9 properly ignored it, but the attach re-write of 1.10
introduced this logic error.
Pointy Hat to: phk (for breaking it then asking me to fix it :-)
Sponsored by: The Voices in Bill Paul's Head, LLC
the old one is. Hence we need to evaluate the old one for _FDI since it
has a valid ACPI_HANDLE ivar. This is a minimal fix. Make a note that a
more complete one is to make fdc support the ACPI_HANDLE ivar for its
children.
This and the previous change are MT5 candidates.
nor are they 3D accelarators as the description would like us to
believe. Since the TGA2 adapter has a VGA mode (unlike the TGA adapter),
one can use the VGA driver instead.
This fixes GENERIC kernels on alpha with TGA2 adapters.
o Remove PSM_SYNCERR_THRESHOLD1. This value specified how many sync
errors were required before the mouse is re-initialised.
Re-initialisation is now done after (packetsize * 2) sync errors as
things aren't likely to improve after that.
o Reset lastinputerror when re-initialisation occurs. We don't want
to continue to drop data after re-initialisation.
o Count the number of failed packets independently of the syncerrors
statistic. syncerrors is useful for recovering sync within a single
packet. pkterrors allows us to detect when the mouse changes its
packet mode due to some external event (e.g. KVM switch).
o Reinitialize the mouse if we see more than psmpkterrthresh errors
during the validation period. The validation period begins as soon
as a sync error is detected and continues until psmerrsecs/msecs
time has elapsed. The defaults for these two values force a reset
if we see two packet errors in a 2 second period. This allows rapid
detection of packet framing errors caused by the mouse changing packet
modes.
o Export psmpkterrthresh as a sysctl
o Export psmloglevel as a sysctl.
o Enable more debugging code to be enabled at runtime via psmloglevel.
o Simplify verbose conditioned loging by using a VLOG macro.
o Add several comments describing the sync recovery algorithm of
this driver.
Large Portions by: Brian Somers <brian@Awfulhak.org>
Inspired and Frustrated by: Belkin KVMs
Reviewed by: njl, philip
its users.
netisr_queue() now returns (0) on success and ERRNO on failure. At the
moment ENXIO (netisr queue not functional) and ENOBUFS (netisr queue full)
are supported.
Previously it would return (1) on success but the return value of IF_HANDOFF()
was interpreted wrongly and (0) was actually returned on success. Due to this
schednetisr() was never called to kick the scheduling of the isr. However this
was masked by other normal packets coming through netisr_dispatch() causing the
dequeueing of waiting packets.
PR: kern/70988
Found by: MOROHOSHI Akihiko <moro@remus.dti.ne.jp>
MFC after: 3 days
Add missing untimeout that would get lost in handling of some
error situations, and caused what looked like random timeouts
afterwards when the timeout fired.
