Revert a part of the MRT commit that proved un-needed.
rt_check() in its original form proved to be sufficient and
rt_check_fib() can go away (as can its evil twin in_rt_check()).
I believe this does NOT address the crashes people have been seeing
in rt_check.
Clean up flags support just a tad: FreeBSD support depends on
HAVE_STRUCT_STAT_ST_FLAGS, Linux support depends on the
existence of the appropriate ioctl() options. In particular,
this should fix some nagging compile errors on Linux platforms
that don't have e2fsprogs-devel installed.
Test handling of restores relative to symlinks.
In particular:
* tar -x -P follows symlinks to existing dirs, but not without -P
* symlinks to files are always replaced
* broken symlinks are always replaced
Instead of building up a "struct nfs_args" to pass to the kernel
via nmount(), build up an iovec where each iovec member is an NFS mount
option, and pass the iovec down to the kernel via nmount(). These options
are then parsed in the kernel.
This should make it easier to add new NFS mount options in future.
Many, many thanks to Doug Rabson for taking my initial patches,
and cleaning them up. In addition, Doug added a fallback_mount()
function so that the newer mount_nfs program will work against older
kernels, to facilitate upgrading/downgrading scenarios.
Doug also re-wrote the mount_nfs.8 man page.
Add code to parse NFS mount options passed as individual
items of the nmount() iovec. This will allow us to move
away from gathering up all the NFS mount options as a single
"struct nfs_args" to be passed down through nmount().
This will make adding new NFS mount options much easier.
Many, many thanks to Doug Rabson, who took my initial patches and
cleaned them up.
Because of using more clear and same time more functional codec parser
new driver is able to handle more codecs, use them better then before and
without most of previous quirks. All of tested codecs itself manage playback,
record, input mixing and monitoring quite fine. In all of investigated
trouble cases problem was found or in nonstandard codec usage or incorrect
codec configuration made by BIOS. Most of that cases could be fixed using
device hints, some of which are already included to the driver.
New driver supports multiple codecs per HDA bus, multiple audio function
groups per codec and multiple logical sound devices per audio function group.
So don't worry when you get several PCM devices instead of one, it is normal.
It is usual situation with powerful codecs to provide, for example, 3 PCM
devices: one for 7.1 playback and main recording, one for headset and one
for digital SPDIF I/O.
New driver implements Universal Audio Architecture (UAA) much better then
previous one. Most information about recommended codec usage now taken from
the codec configuration registers initialized by BIOS. User may alter that
configuration using device hints to reconfigure logical audio devices to
his needs in a very broad range up to the limits of the codec functionality.
New driver supports digital PCM playback and AC3 pass-through. I am not sure
about completeness of this implementation, but I have several success stories
including my own. Vchans subsystem does not support AC3 pass-through so it
had to be disabled for that devices at this moment.
New driver is ready for multichannel playback, but until our OSS is unable
to use this it will just duplicate same stereo stream into all channel
pairs.
New driver supports suspend/resume. I am unable to really test this part
myself, but I have got several success stories.
Driver has very informative verbose boot messages. So if you have any
questions or problems - enable and read them first.
We can't implicitly trust the hook on NGQF_FN/NGQF_FN2 processing in
ng_apply_item(). There are possible (and I have got one) use-after-free
class panics because of it.
If hook is specified, require it to be valid at the apply time. The only
exceptions are the internal ng_con_part2(), ng_con_part3() and
ng_rmhook_part2() functions which are specially made to work with invalid
hooks.
- For any lock list we hold the head in order to reduce allocation from
the free list and in this way avoid contention on the w_mtx.
In order to make the code simple, we rely on the rule that when the head
has not a child it also doesn't have other subsequent entries.
Actually this assertion is broken because we can free all the head
children and quit witness_unlock() with the head still allocated, with no
children and subsequent entries present.
Fix this by shifting the head if other entries are present and still
freeing the object, but leaving always an head.
- Fix witness_thread_has_locks() in order to report, correctly, if the
lock list linked to a specific thread has children or not based on the
above explained rule.
- Fix a printout into DDB's "show alllocks" command in order to show,
correctly, the process name that is really what we want.
- Fix style(9) for a comment.
Tested by: Giovanni Trematerra <giovanni dot trematerra at gmail dot com>
Reported by: Marko Kiiskila <marko dot kiiskila at nokia dot com>
Sponsored by: Nokia
Make mlxcontrol work with more than one system drive:
- When searching for the next system drive, return the next one instead
of always returning the first one.
- Plug fd lead and make sure that the MLX_NEXT_CHILD ioctl is called
on the controller fd, not the disk's one.
When doing rfork(0), i.e. separating curproc VM from any other user of
the same vmspace, decrement the reference count of the shared LDT instead
of a newly-made copy. Code factually removed LDT from the process that
did rfork(0).
Introduce user_ldt_deref() function that does decrement of refcount for
the struct proc_ldt, and call it in the rfork(0) case on the shared LDT.
The user_ldt_alloc() function shall return with dt_lock locked.
The user_ldt_free() function shall return with dt_lock unlocked.
Error handling code in both functions do not handle this, fix it by
doing necessary lock/unlock.
Remove warning about static LDT segment allocation. Applications
continue using it after ~7 years since warning was introduced, and there
is no reason to discourage them.
Bandaid: disable interrupts to make sure intr_enabled and the IER register
are in sync. I'm not sure why it is needed, and why it wouldn't be on other
arm platforms, but it prevents a lockup under heavy I/O.
Remove the unused field "pc_prvspace" from the MD fields for the struct
pcpu. There's not even a thing such as a "struct pcup".
While I'm there, remove a comment that makes no sense for arm.
Update the comments above the 0xcf9 register reset attempt to match the
code. We only attempt a single reset using this method (a "hard" reset),
and we use two writes to ensure there is a 0 -> 1 transition in bit 2 to
force a reset.
- Fix nexus_setup_intr() abuse of setting up multiple IRQs in one go. Calling
arm_setup_irqhandler() in loop is bogus, as there's just one cookie given
from the caller and it is overwritten in each iteration so that only the
last handler's cookie value prevails.
- Proper intr masking/unmasking handling: the IRQ source is masked at PIC level
only after the last handler has been removed from the list.
Reviewed by: cognet, imp, sam, stass
Obtained from: Grzegorz Bernacki gjb ! semihalf dot com
adrian [Thu, 11 Sep 2008 09:55:54 +0000 (09:55 +0000)]
Fix the device name spacing.
The old logic padded the device name out but assumed the unit number was one digit
long; this fails for things like SATA devices which (for me) begin at ad10.
Assemble the full device name in a temporary buffer and then calcluate padding
based on that string.
marius [Wed, 10 Sep 2008 20:53:22 +0000 (20:53 +0000)]
Revert r177108 and restore r60506 for sparc64 as long as libstand
isn't fixed to only open the network device once and not do a open
and close dance on every file access; the firmwares of newer sparc64
machines perform an auto-negotiation with every open which in turn
causes netbooting to take horribly long if we open and close the
device over and over again.
marius [Wed, 10 Sep 2008 20:22:27 +0000 (20:22 +0000)]
Add drivers for the power management devices found on Fireplane/
Safari- and JBus-based machines. Currently the main purpose of
these drivers is debugging of the resource allocation on nexus(4)
and the register content of these devices though.
Make sure the TTY has not disappeared out from under us before calling
ttydevsw_outwakeup(). This should fix panics which occur after remote
login sessions timeout during moderate TTY activity. An example of
where this might occur is where a pending write to the terminal is
occurring while sshd(8) is shutting down the TTY after a TCP timeout.
marius [Wed, 10 Sep 2008 20:07:08 +0000 (20:07 +0000)]
Work around Cheetah+ erratum 34 (USIII+ erratum #10) by relocating
the locked entry in it16 slot 0, which typically is occupied by the
PROM, and manually entering locked entries in slots != 0.
Thanks to Hubert Feyrer for donating the Blade 2000 this change was
developed on.
Teach WITNESS about the interlocks used with lockmgr. This removes a bunch
of spurious witness warnings since lockmgr grew witness support. Before
this, every time you passed an interlock to a lockmgr lock WITNESS treated
it as a LOR.
Beginning of overhaul of fwcontrol:
- Documentation of send_phy_config()
- cleanup of malloc's() and added error checking throughout
- new capability to iterate over multiple firewire buses
- update usage() display
- cleanup command line parsing to allow out of order switches
- cleanup command line parsing to allow multiple switches per invocation
- cleanup grammar of man page a bit
- add some ranges to the man page to indicate what values are valid
Since fwcontrol's code is the same across 6/7/head this can be
applied to all branches after the MFC period.
Reviewed by: Dieter freebsd@sopwith.solgatos.com
Approved by: mentor Scott scottl@samsco.org
MFC after: 60 days
Some K8 chipsets don't expose all of the PCI devices on bus 0 via PCIe
memory-mapped config access. Add a workaround for these systems by
checking the first function of each slot on bus 0 using both the
memory-mapped config access and the older type 1 I/O port config access.
If we find a slot that is only visible via the type 1 I/O port config
access, we flag that slot. Future PCI config transactions to flagged
slots on bus 0 use type 1 I/O port config access rather than memory mapped
config access.
rename flags and add a ZYD_FLAG_DETACHING flag to indicate we're
detaching that when the USB is pulled out forcibly during the driver is
running background scan, a page fault can be occurred even if we called
usb_rem_task() when detaching. It looks like a kind of races.
Add support to rc.initdiskless for /conf/T/M/remount_subdir.
This allows the location of the configuration data to be relocated
within the filesystem containing it. A nullfs mount is used in order
to achieve this.
Move call to _malloc_thread_cleanup() so that if this is the last thread,
the call never happens. This is necessary because malloc may be used
during exit handler processing.
Getdents requires padding with 2 bytes instead of 1 byte
as with getdents64. The last byte is used for storing
the d_type, add this to plain getdents case where it was
missing before. Also change the code to use strlcpy instead
of plain strcpy. This changes fix the getdents crash we
had reports about (hl2 server etc.)
Initialise the SVCAUTH field for new transport structures when they are
allocated instead of waiting for the first request. This fixes an issue with
rpcbind's support for PMAPPROC_CALLIT.
Return two fixes from previous backout which does not require
review by secteam@ for the reasons mentioned below.
1) Rename /dev/urandom to /dev/random since urandom marked as
XXX Deprecated
alias in /sys/dev/random/randomdev.c
(this is our naming convention and no review by secteam@ required)
2) Set rs_stired flag after forced initialization to prevent
double stearing.
(this is already in OpenBSD, i.e. they don't have double stearing.
It means that this change matches their code path and no additional
secteam@ review required)
Work around an integer division resulting in 0 and thus the
congestion window not being incremented, if cwnd > maxseg^2.
As suggested in RFC2581 increment the cwnd by 1 in this case.
See http://caia.swin.edu.au/reports/080829A/CAIA-TR-080829A.pdf
for more details.
Submitted by: Alana Huebner, Lawrence Stewart,
Grenville Armitage (caia.swin.edu.au)
Reviewed by: dwmalone, gnn, rpaulo
MFC After: 3 days
IGP based radeon cards such as the rs485 and rs690 require that the GART table
be un-cached. Our previous memory barrier was not sufficient. This patch
allocates the IGP GART tables using the BUS_DMA_NOCACHE flag to get these
cards working.
We should never call drm_pci_alloc() while holding locks, due the the
calls to bus_dma. There were multiple paths that held different locks or
no locks at all. This patch ensures that all of the calling paths drop
their lock(s) before calling drm_pci_alloc().
Add new TAPGIFNAME tap(4) character device ioctl. This is a
convenient shortcut to obtain network interface name using
file descriptor for character device.
- Reduce scope of #ifdef's in uma_zcreate() call in init_turnstile0().
- Set UMA_ZONE_NOFREE so that the per-turnstile spin locks are type stable
to avoid a race where one thread might dereference a lock in a free'd
turnstile that was previously used by another thread.
marius [Mon, 8 Sep 2008 21:24:25 +0000 (21:24 +0000)]
For cheetah-class CPUs ensure that the dt512_0 is set to hold 8k pages
for all three contexts and configure the dt512_1 to hold 4MB pages for
them (e.g. for direct mappings).
This might allow for additional optimization by using the faulting
page sizes provided by AA_DMMU_TAG_ACCESS_EXT for bypassing the page
size walker for the dt512 in the superpage support code.
marius [Mon, 8 Sep 2008 20:38:48 +0000 (20:38 +0000)]
USIII and beyond CPUs have stricter requirements when it comes
to synchronization needed after stores to internal ASIs in order
to make side-effects visible. This mainly requires the MEMBAR #Sync
after such stores to be replaced with a FLUSH. We use KERNBASE as
the address to FLUSH as it is guaranteed to not trap. Actually,
the USII synchronization rules also already require a FLUSH in
pretty much all of the cases changed.
We're also hitting an additional USIII synchronization rule which
requires stores to AA_IMMU_SFSR to be immediately followed by a DONE,
FLUSH or RETRY. Doing so triggers a RED state exception though so
leave the MEMBAR #Sync. Linux apparently also has gotten away with
doing the same for quite some time now, apart from the fact that
it's not clear to me why we need to clear the valid bit from the
SFSR in the first place.
marius [Mon, 8 Sep 2008 20:20:44 +0000 (20:20 +0000)]
o Move the MODULE_DEPEND() for cam(4) from the esp_sbus.c front-end to
the ncr53c9x.c core where it actually belongs so future front-ends
don't need to add it.
o Use the correct OFW property when looking for the initiator ID of the
SBus device.
o Don't specify an alignment when creating the parent DMA tag for
SUNW,fas; their DMA engine doesn't require an alignment constraint
and it's no inherited by the child DMA tags anyway (which probably
is a bug though).
o Drop the superfluous sc_maxsync and use sc_minsync instead. The
former apparently was added due to a confusion with the maximum
frequency used in cam(4), which basically corresponds to the
inverse of minimum sync period.
o Merge ncr53c9x.c from NetBSD:
1.116: NCRDMA_SETUP() should be called before NCR_SET_COUNT() and
NCRCMD_DMA command in ncr53c9x_select().
1.125: free allocated resources on detach.
o Static'ize ncr53c9x_action(), ncr53c9x_init() and ncr53c9x_reset()
as these are not required outside of ncr53c9x.c.
o In ncr53c9x_attach() don't leak the device mutex in case attaching
fails.
o Register an asynchronous notification handler so in case cam(4)
reports a lost device we can cancel outstanding commands and
restore the default parameters for the target in question.
o For FAS366 correctly support 16-bit target IDs and let it know
that we use 32-bit transfers.
o Overhaul the negotiation of transfer settings. This includes
distinguishing between current and goal transfer settings of the
target so we can renegotiate their goal settings when necessary
and correcting the order in which tagged, wide and synchronous
transfers are negotiated.
o If we are requesting sense, force a renegotiation if we are
currently using anything different from asynchronous at 8 bit
as the target might have lost our transfer negotiations.
o In case of an XPT_RESET_BUS just directly call ncr53c9x_init()
instead of issuing a NCRCMD_RSTSCSI, which in turn will issue an
interrupt that is treated as an unexpected SCSI bus reset by
ncr53c9x_intr() and thus calls ncr53c9x_init(). Remove the now
no longer used ncr53c9x_scsi_reset().
o Correct an off-by-one error when setting cpi->max_lun.
o In replace printf(9) with device_printf(9) calls where appropriate
and in ncr53c9x_action() remove some unnecessarily verbose messages.
o In ncr53c9x_sched() use TAILQ_FOREACH() instead of reimplementing
it and consolidate two tagging-related target info checks into one.
o In ncr53c9x_done() set the CAM status to CAM_SCSI_STATUS_ERROR when
appropriate, respect CAM_DIS_AUTOSENSE and teach it to return SCSI
status information.
o In ncr53c9x_dequeue() ensure the tags are cleared.
o Use ulmin() instead of min() where appropriate.
o In ncr53c9x_msgout() consistently use the reset label.
o When we're interrupted during a data phase and the DMA engine is
still active, don't panic but reset the core and the DMA engine as
this should be sufficient. Also, the typical problem for triggering
this was the lack of renegotiation when requesting sense.
o Correctly handle DEVICE RESETs.
o Adapt the locking of esp(4) to MPSAFE cam(4). This includes moving
the calls of lsi64854_attach() to the bus front-ends so it can pass
the esp(4) mutex to bus_dma_tag_create(9).
o Change the LSI64854 driver to not create a DMA tag and map for the
Ethernet channel as le(4) will handle these on its own as well as
sync and unload the DMA maps for the SCSI and parallel port channel
after a DMA transfer.
o Cam(4)'ify some NetBSD-centric comments.
o Use bus_{read,write}_*(9) instead of bus_space_{read,write}_*(9)
and take advantage of rman_get_rid(9) in order to save some softc
members.
Close a race in sleepq_broadcast() where the sleepq could be reused after
it had been assigned to the last sleeping thread. That thread might have
started running on another CPU and have reused that sleep queue. Fix it
by just walking the thread queue using TAILQ_FOREACH_SAFE() rather than
a while loop.
peter [Mon, 8 Sep 2008 11:41:20 +0000 (11:41 +0000)]
Pass 1 of mpsafetty-ifying si(4). It compiles and has basic functionality,
but needs a lot more work. In particular, it has no flow control and has
a tendency to race when giving commands. It still uses Giant for the
tty and driver lock, but this is a keep-it-simple feature for now.
Some of the [temporary] proliferation of messages lines are way too long.
projects / FreeBSD / FreeBSD.git / log