adrian [Fri, 27 Jul 2012 05:48:42 +0000 (05:48 +0000)]
Migrate the descriptor allocation function to not care about the number
of buffers, only the number of descriptors.
This involves:
* Change the allocation function to not use nbuf at all;
* When calling it, pass in "nbuf * ndesc" to correctly update how many
descriptors are being allocated.
Whilst here, fix the descriptor allocation code to correctly allocate
a larger buffer size if the Merlin 4KB WAR is required. It overallocates
descriptors when allocating a block that doesn't ever have a 4KB boundary
being crossed, but that can be fixed at a later stage.
Document the dataflash/mmc-sd issue. Add umass driver and usb. Boot
off da0s1a instead of ate0. Note that MMC/SD is slot B. Until I
switch over to NAND boot, dataflash booting will preclude having SD
cards inserted at boot, so this last bit is untested.
Turns out the ETHERNUT5 isn't anything like the SAM9260-EK. Make this
board init match better: UART1 instead of UART2, No RMMI, no SPI0, SPI1
comments.
luigi [Thu, 26 Jul 2012 16:45:28 +0000 (16:45 +0000)]
Add support for VALE bridges to the netmap core, see
http://info.iet.unipi.it/~luigi/vale/
VALE lets you dynamically instantiate multiple software bridges
that talk the netmap API (and are *extremely* fast), so you can test
netmap applications without the need for high end hardware.
This is particularly useful as I am completing a netmap-aware
version of ipfw, and VALE provides an excellent testing platform.
Also, I also have netmap backends for qemu mostly ready for commit
to the port, and this too will let you interconnect virtual machines
at high speed without fiddling with bridges, tap or other slow solutions.
The API for applications is unchanged, so you can use the code
in tools/tools/netmap (which i will update soon) on the VALE ports.
This commit also syncs the code with the one in my internal repository,
so you will see some conditional code for other platforms.
The code should run mostly unmodified on stable/9 so people interested
in trying it can just copy sys/dev/netmap/ and sys/net/netmap*.h
from HEAD
VALE is joint work with my colleague Giuseppe Lettieri, and
is partly supported by the EU Projects CHANGE and OPENLAB
Trim read/write sizes to 128 bytes. Pages are only 128 bytes in size.
Writes larger than this will wrap to the same page. Reads larger than
this are permitted, but why take chances.
Drop non-portable libedit's el_data_set() and el_data_get() for
private data.
We can set/get private data with the documented el_get() and
el_set() so there's no need for our local extensions, which
never received much use anyway.
While here, also re-arrange the call to term_init_arrow. This
was left over from r89735 but is not required anymore.
This changes reduce differences against NetBSD's libedit.
Refactor enclosure manegement support in ahci(4). Move it out into separate
subdevice ahciem. Emulate SEMB SES device from AHCI LED interface to expose
it to users in form of ses(4) CAM device. If we ever see AHCI controllers
supporting SES of SAF-TE over I2C as described by specification, they should
fit well into this new picture.
Improve descriptions for several devices supported by uslcom(4).
Correct the spelling of the company Telegesis.
Move MpMan to the correct location alphabetically.
Add support for more devices to uslcom(4). This commit syncronises the
list of supported devices with the union of:
NetBSD src/sys/dev/usb/uslsa.c 1.18
OpenBSD src/sys/dev/usb/uslcom.c 1.24
Linux source/drivers/usb/serial/cp210x.c HEAD
Remove duplicate JABLOTRON PC60B entry.
Note that some of the devices added here are multi-port devices. The
uslcom(4) driver currently only supports the first port on such devices.
Update the man page to reflect the full list of supported devices.
Remove two caveats from the CAVEATS section, as both listed caveats no
longer apply. Add a caveat about multi-port devices.
Try to avoid all files dependence on the modification time of the large and
often modified directory created symbolic links points to - it cause
unnecessary full rebuilds each time make runs when directory is changed.
So do it only if symbolic link does not exists, which usually means that
objdir is clean anyway.
Update partitions to reflect "sam9 demo" defaults.
Update i2c devices to just include the eeprom.
Update dataflash chip select to be CS 1 (this doesn't work yet and
needs changes to at91_spi and the spibus infrastructure).
Fix typo in comment.
Replace the macro name NUM with INTERVALS. This change provides
compatibility with the INTERVALS macro used in the soon-to-be-commmitted
expm1l() and someday-to-be-committed log*l() functions.
Add a comment into ld128/s_expl.c noting at gcc issue that was
deleted when rewriting ld80/e_expl.c as ld128/s_expl.c.
The baud rate on CP1201/2/3 devices can be set in one of two ways:
- The USLCOM_SET_BAUD_DIV command (0x01)
- The USLCOM_SET_BAUD_RATE command (0x13)
Devices based on the CP1204 will only accept the latter command, and ignore
the former. As the latter command works on all chips that this driver
supports, switch to always using it.
A slight confusion here is that the previously used command was incorrectly
named USLCOM_BAUD_RATE - even though we no longer use it, rename it to
USLCOM_SET_BAUD_DIV to closer match the name used in the datasheet.
This change reflects a similar change made in the Linux driver, which was
submitted by preston.fick at silabs.com, and has been tested on all of the
uslcom(4) devices I have to hand.
Revert previous commit. The bug was actually caused by an issue
in pre 1.8.5 versions of sudo which were sending too many
SIGINTs to processes when the user hit Ctrl-C.
Fix a problem when CARP is enabled on the interface for IPv4
but not for IPv6. The current checks in nd6_nbr.c along with the
old version will result in ifa being NULL and subsequently the
packet will be dropped. This prevented NS/NA, from working and
with that IPv6.
Now return the ifa from the carp lookup function in two cases:
1) if the address matches, is a carp address, and we are MASTER
(as before),
2) if the address matches but it is not a carp address at all (new).
Reported by: Peter Wemm (new Y! FreeBSD cluster, eating our own dogfood)
Tested on: New Y! FreeBSD cluster machines
Reviewed by: glebius
luigi [Wed, 25 Jul 2012 11:28:15 +0000 (11:28 +0000)]
Use legacy interrupts as a default. This gives up to 10% speedup
when used in qemu (and this driver is for non-PCIe cards,
so probably its largest use is in virtualized environments).
Add rmb() to tsc_read_##x to enforce serialization of rdtsc captures.
Intel Architecture Manual specifies that rdtsc instruction is not serialized,
so without this change, TSC synchronization test would periodically fail,
resulting in use of HPET timecounter instead of TSC-low. This caused
severe performance degradation (40-50%) when running high IO/s workloads due to
HPET MMIO reads and GEOM stat collection.
Tests on Xeon E5-2600 (Sandy Bridge) 8C systems were seeing TSC synchronization
fail approximately 20% of the time.
Sponsored by: Intel
Reviewed by: kib
MFC after: 3 days
Heavy DNSSEC Validation Load Can Cause a "Bad Cache" Assertion Failure
in BIND9
High numbers of queries with DNSSEC validation enabled can cause an
assertion failure in named, caused by using a "bad cache" data structure
before it has been initialized.
Fix a bug in interrupt handling so that we're only considered
impatient if we sent more than 2 INT signals. This fixes a bug where
we wouldn't see aggregations print on the command line if we Ctrl-C'd
a dtrace script or command line invocation.
Update to latest git version of dtc to get new dtsv2 support,
including the include directive.
Fix minor build issue corrected by converting yypush_buffer_state and
yypop_buffer_state to yy_set_buffer_state and a hard-coded 100-deep
stack. It was easier to fix it here than to import that support into
our flex.
The new tools and test hardness remain unsupported at the moment.
Don't ever build files depending on the directory where they are placed in.
It is obvious that its modification time will change with each such file
builded.
This bug cause whole libelf to rebuild itself each second make run
(and relink that files on each first make run) in the loop.
Do not call ses_softc_cleanup() in case of configuration read failure.
Just free inclomplete daemon cache instead to let it retry next time.
Premature ses_softc_cleanup() caused NULL dereference when freed softc
was accessed later.
adrian [Tue, 24 Jul 2012 01:18:19 +0000 (01:18 +0000)]
Add a new HAL method - the AR93xx and later NICs have a separate
TX descriptor ring for TX status completion. This API call will pass
the allocated buffer details to the HAL.
The function keys on a Microsoft Natural Egronomic Keyboard 4000 have been
repurposed as "Help", "Undo", "Redo" etc., and a special "F Lock" key is
required to return them to their normal purpose.
This change enables the UQ_KBD_BOOTPROTO quirk for the MS Natural 4000
keyboard to get the keys working again. More extensive changes to the USB
keyboard infrastructure would be needed to fully support the "F Lock" mode
and the extended keys on this keyboard.
Put struct ostat and struct nstat under #ifdef _KERNEL. The
compatibility definitions are only needed for implementation of the
syscalls, they cause namespace pollution and are not useful for
applications.
Fix a bug introduced in r221129 that leads to a panic wen using bundled
SAs. For now allow same address family bundles. While discovered with
ESP and AH, which does not make a lot of sense, IPcomp could be a possible
problematic candidate.
Update some stale comments regarding tcbinfo locking in the TCP input
path: read locks on tcbinfo are no longer used, so won't happen. No
functional change.
The PT_I386_{GET,SET}XMMREGS and PT_{GET,SET}XSTATE operate on the
stopped threads. Implementation assumes that the thread's FPU context
is spilled into the PCB due to stop. This is mostly true, except when
FPU state for the thread is not initialized. Then the requests operate
on the garbage state which is currently left in the PCB, causing
confusion.
The situation is indeed observed after a signal delivery and before
#NM fault on execution of any FPU instruction in the signal handler,
since sendsig(9) drops FPU state for current thread, clearing
PCB_FPUINITDONE. When inspecting context state for the signal handler,
debugger sees the FPU state of the main program context instead of the
clear state supposed to be provided to handler.
Fix this by forcing clean FPU state in PCB user FPU save area by
performing getfpuregs(9) before accessing user FPU save area in
ptrace_machdep.c.
Note: this change will be merged to i386 kernel as well, where it is
much more important, since e.g. gdb on i386 uses PT_I386_GETXMMREGS to
inspect FPU context on CPUs that support SSE. Amd64 version of gdb
uses PT_GETFPREGS to inspect both 64 and 32 bit processes, which does
not exhibit the bug.
Stop clearing x87 exceptions in the #MF handler on amd64. If user code
understands FPU hardware enough to catch SIGFPE and unmask exceptions
in control word, then it may as well properly handle return from
SIGFPE without causing an infinite loop of #MF exceptions due to
faulting instruction restart, when needed.
Clearing exceptions causes information loss for handlers which do
understand FPU hardware, and struct siginfo si_code member cannot be
considered adequate replacement for en_sw content due to translation.
Supposed reason for clearing the exceptions, which is IRQ13 handling
oddities, were never applicable to amd64.
Note: this change will be merged to i386 kernel as well, since we do
not support IRQ13 delivery of #MF notifications for some time.
(Incomplete) fixes for symbols visibility issues and style in fcntl.h.
Append '__' prefix to the tag of struct oflock, and put it under BSD
namespace. Structure is needed both by libc and kernel, thus cannot be
hidden under #ifdef _KERNEL.
Move a set of non-standard F_* and O_* constants into BSD namespace.
SUSv4 explicitely allows implemenation to pollute F_* and O_* names
after fcntl.h is included, but it costs us nothing to adhere
to the specification if exact POSIX compliance level is requested by
user code.
Change some spaces after #define to tabs.
Noted by and discussed with: bde
MFC after: 1 week
projects / FreeBSD / FreeBSD.git / log