Commit Graph

42 Commits

Author SHA1 Message Date
Rui Paulo
82f98de5fe Convert the if_vr(4) driver model to the interrupt filter model and use
a taskqueue.

This gives a 16% performance improvement under high load on slow systems,
especially when vr shares an interrupt with another device, which is
common with the Alix x86 boards.
Contrary to the other devices, I left the interrupt processing for loop
in because there was no significant difference in performance and this
should avoid enqueuing more taskqueues unnecessarily.
We also decided to move the vr_start_locked() call inside the for loop
because we found out that it helps performance since TCP ACKs now have a
chance to go out quicker.

Reviewed by:	yongari (older version, same idea)
Discussed with:	yongari, jhb
2012-05-12 14:37:25 +00:00
Pyun YongHyeon
649ab1659d Announce flow control capability to PHY drivers and enable flow
control for all vr(4) controllers that support it.  It's known that
old vr(4) controllers(Rhine II) does not support TX pause but Rhine
III supports both TX and RX pause.
Make TX pause really work on Rhine III by letting controller know
available RX buffers.
While here, adjust XON/XOFF parameters to get better performance
with flow control.
2011-11-28 19:03:59 +00:00
Pyun YongHyeon
7d45b35cfc Reuse flag variable to represent driver internal states rather than
using member variables in softc.
While I'm here change media after setting IFF_DRV_RUNNING. This
will remove unnecessary link state handling in vr_tick() if
controller established a link immediately.
2011-11-28 18:32:35 +00:00
Pyun YongHyeon
161bc8e475 Remove link state change callback handler. There is no need to
register both status change and link state change callbacks.
Implement checking valid link in state change callback and poll
active link state in vr_tick().  This allows immediate detection of
lost link as well as protecting driver from frequent link flips during
link renegotiation.  taskq implementation was removed because driver
now needs to poll link state in vr_tick().
While I'm here do not report current link state if interface is not
running.

Tested by:	n_hibma
MFC after:	1 week
2011-06-22 02:18:45 +00:00
Marius Strobl
8e5d93dbb4 Convert the PHY drivers to honor the mii_flags passed down and convert
the NIC drivers as well as the PHY drivers to take advantage of the
mii_attach() introduced in r213878 to get rid of certain hacks. For
the most part these were:
- Artificially limiting miibus_{read,write}reg methods to certain PHY
  addresses; we now let mii_attach() only probe the PHY at the desired
  address(es) instead.
- PHY drivers setting MIIF_* flags based on the NIC driver they hang
  off from, partly even based on grabbing and using the softc of the
  parent; we now pass these flags down from the NIC to the PHY drivers
  via mii_attach(). This got us rid of all such hacks except those of
  brgphy() in combination with bce(4) and bge(4), which is way beyond
  what can be expressed with simple flags.

While at it, I took the opportunity to change the NIC drivers to pass
up the error returned by mii_attach() (previously by mii_phy_probe())
and unify the error message used in this case where and as appropriate
as mii_attach() actually can fail for a number of reasons, not just
because of no PHY(s) being present at the expected address(es).

Reviewed by:	jhb, yongari
2010-10-15 14:52:11 +00:00
Pyun YongHyeon
6b284b784a Fix a multicast handling regression on VT6105M introduced in
vr(4) overhauling(r177050).

It seems that filtering multicast addresses with multicast CAM
entries require accessing 'CAM enable bit' for each CAM entry.
Subsequent accessing multicast CAM control register without
toggling the 'CAM enable bit' seem to no effects.
In order to fix that separate CAM setup from CAM mask configuration
and CAM entry modification. While I'm here add VLAN CAM filtering
feature which will be enabled in future(FreeBSD now can receive
VLAN id insertion/removal event from vlan(4) on the fly).

For VT6105M hardware, explicitly disable VLAN hardware tag
insertion/stripping and enable VLAN CAM filtering for VLAN id 0.
This shall make non-VLAN frames set VR_RXSTAT_VIDHIT bit in Rx
status word.

Added multicast/VLAN CAM address definition to header file.

PR:	kern/125010, kern/125024
MFC after:	1 week
2008-07-16 08:35:29 +00:00
Pyun YongHyeon
0a76b25957 Fix VR_RXSTAT_RX_OK bit definition which lasted for more than 9
years. All datasheet I have indicates the bit 15 is the
VR_RXSTAT_RX_OK. The bit 14 is reserved for all Rhine family
except VT6105M. VT6105M uses that bit to indicate a VLAN frame
with matching CAM VLAN id.
Use the VR_RXSTAT_RX_OK instead of VR_RXSTAT_RXERR when vr(4)
checks the validity of received frame.
This should fix occasional dropping frames on VT6105M.

Tested by:	Goran Lowkrantz ( goran.lowkrantz at ismobile dot com )
MFC after:	1 week
2008-07-16 08:02:23 +00:00
Pyun YongHyeon
de126af331 Teach vr(4) to use bus_dma(9) and major overhauling to handle link
state change and reliable error recovery.
 o Moved vr_softc structure and relevant macros to header file.
 o Use PCIR_BAR macro to get BARs.
 o Implemented suspend/resume methods.
 o Implemented automatic Tx threshold configuration which will be
   activated when it suffers from Tx underrun. Also Tx underrun
   will try to restart only Tx path and resort to previous
   full-reset(both Rx/Tx) operation if restarting Tx path have failed.
 o Removed old bit-banging MII interface. Rhine provides simple and
   efficient MII interface. While I'm here show PHY address and PHY
   register number when its read/write operation was failed.
 o Define VR_MII_TIMEOUT constant and use it in MII access routines.
 o Always honor link up/down state reported by mii layers. The link
   state information is used in vr_start() to determine whether we
   got a valid link.
 o Removed vr_setcfg() which is now handled in vr_link_task(), link
   state taskqueue handler. When mii layer reports link state changes
   the taskqueue handler reprograms MAC to reflect negotiated duplex
   settings. Flow-control changes are not handled yet and it should
   be revisited when mii layer knows the notion of flow-control.
 o Added a new sysctl interface to get statistics of an instance of
   the driver.(sysctl dev.vr.0.stats=1)
 o Chip name was renamed to reflect the official name of the chips
   described in VIA Rhine I/II/III datasheet.
	REV_ID_3065_A -> REV_ID_VT6102_A
	REV_ID_3065_B -> REV_ID_VT6102_B
	REV_ID_3065_C -> REV_ID_VT6102_C
	REV_ID_3106_J -> REV_ID_VT6105_A0
	REV_ID_3106_S -> REV_ID_VT6105M_A0
   The following chip revisions were added.
	#define REV_ID_VT6105_B0	0x83
	#define REV_ID_VT6105_LOM	0x8A
	#define REV_ID_VT6107_A0	0x8C
	#define REV_ID_VT6107_A1	0x8D
	#define REV_ID_VT6105M_B1	0x94
 o Always show chip revision number in device attach. This shall help
   identifying revision specific issues.
 o Check whether EEPROM reloading is complete by inspecting the state
   of VR_EECSR_LOAD bit. This bit is self-cleared after the EEPROM
   reloading. Previously vr(4) blindly spins for 200us which may/may
   not enough to complete the EEPROM reload.
 o Removed if_mtu setup. It's done in ether_ifattach().
 o Use our own callout to drive watchdog timer.
 o In vr_attach disable further interrupts after reset. For VT6102 or
   newer hardwares, diable MII state change interrupt as well because
   mii state handling is done by mii layer.
 o Add more sane register initialization for VT6102 or newer chips.
    - Have NIC report error instead of retrying forever.
    - Let hardware detect MII coding error.
    - Enable MODE10T mode.
    - Enable memory-read-multiple for VT6107.
 o PHY address for VT6105 or newer chips is located at fixed address 1.
   For older chips the PHY address is stored in VR_PHYADDR register.
   Armed with these information, there is no need to re-read
   VR_PHYADDR register in miibus handler to get PHY address. This
   saves one register access cycle for each MII access.
 o Don't reprogram VR_PHYADDR register whenever access to a register
   located at a PHY address is made. Rhine fmaily allows reprogramming
   PHY address location via VR_PHYADDR register depending on
   VR_MIISTAT_PHYOPT bit of VR_MIISTAT register. This used to lead
   numerous phantom PHYs attached to miibus during phy probe phase and
   driver used to limit allowable PHY address in mii register accessors
   for certain chip revisions. This removes one more register access
   cycle for each MII access.
 o Correctly set VLAN header length.
 o bus_dma(9) conversion.
    - Limit DMA access to be in range of 32bit address space. Hardware
      doesn't support DAC.
    - Apply descriptor ring alignment requirements(16 bytes alignment)
    - Apply Rx buffer address alignment requirements(4 bytes alignment)
    - Apply Tx buffer address alignment requirements(4 bytes alignment)
      for Rhine I chip. Rhine II or III has no Tx buffer address
      alignment restrictions, though.
    - Reduce number of allowable number of DMA segments to 8.
    - Removed the atomic(9) used in descriptor ownership managements
      as it's job of bus_dmamap_sync(9).
    With these change vr(4) should work on all platforms.
 o Rhine uses two separated 8bits command registers to control Tx/Rx
   MAC. So don't access it as a single 16bit register.
 o For non-strict alignment architectures vr(4) no longer require
   time-consuming copy operation for received frames to align IP
   header. This greatly improves Rx performance on i386/amd64
   platforms. However the alignment is still necessary for
   strict-alignment platforms(e.g. sparc64). The alignment is handled
   in new fuction vr_fixup_rx().
 o vr_rxeof() now rejects multiple-segmented(fragmented) frames as
   vr(4) is not ready to handle this situation. Datasheet said nothing
   about the reason when/why it happens.
 o In vr_newbuf() don't set VR_RXSTAT_FIRSTFRAG/VR_RXSTAT_LASTFRAG
   bits as it's set by hardware.
 o Don't pass checksum offload information to upper layer for
   fragmented frames. The hardware assisted checksum is valid only
   when the frame is non-fragmented IP frames. Also mark the checksum
   is valid for corrupted frames such that upper layers doesn't need
   to recompute the checksum with software routine.
 o Removed vr_rxeoc(). RxDMA doesn't seem to need to be idle before
   sending VR_CMD_RX_GO command. Previously it used to stop RxDMA
   first which in turn resulted in long delays in Rx error recovery.
 o Rewrote Tx completion handler.
    - Always check VR_TXSTAT_OWN bit in status word prior to
      inspecting other status bits in the status word.
    - Collision counter updates were corrected as VT3071 or newer
      ones use different bits to notify collisions.
    - Unlike other chip revisions, VT86C100A uses different bit to
      indicate Tx underrun. For VT3071 or newer ones, check both
      VR_TXSTAT_TBUFF and VR_TXSTAT_UDF bits to see whether Tx
      underrun was happend. In case of Tx underrun requeue the failed
      frame and restart stalled Tx SM. Also double Tx DMA threshold
      size on each failure to mitigate future Tx underruns.
    - Disarm watchdog timer only if we have no queued packets,
      otherwise don't touch watchdog timer.
 o Rewrote interrupt handler.
    - status word in Tx/Rx descriptors indicates more detailed error
      state required to recover from the specific error. There is no
      need to rely on interrupt status word to recover from Tx/Rx
      error except PCI bus error. Other event notifications like
      statistics counter overflows or link state events will be
      handled in main interrupt handler.
    - Don't touch VR_IMR register if we are in suspend mode. Touching
      the register may hang the hardware if we are in suspended state.
      Previously it seems that touching VR_IMR register in interrupt
      handler was to work-around panic occurred in system shutdown
      stage on SMP systems. I think that work-around would hide
      root-cause of the panic and I couldn't reproduce the panic
      with multiple attempts on my box.
 o While padding space to meet minimum frame size, zero the pad data
   in order to avoid possibly leaking sensitive data.
 o Rewrote vr_start_locked().
    - Don't try to queue packets if number of available Tx descriptors
      are short than that of required one.
 o Don't reinitialize hardware whenever media configuration is
   changed. Media/link state changes are reported from mii layer if
   this happens and vr_link_task() will perform necessary changes.
 o Don't reinitialize hardware if only PROMISC bit was changed. Just
   toggle the PROMISC bit in hardware is sufficient to reflect the
   request.
 o Rearrganed the IFCAP_POLLING/IFCAP_HWCSUM handling in vr_ioctl().
 o Generate Tx completion interrupts for every VR_TX_INTR_THRESH-th
   frames. This reduces Tx completion interrupts under heavy network
   loads.
 o Since vr(4) doesn't request Tx interrupts for every queued frames,
   reclaim any pending descriptors not handled in Tx completion
   handler before actually firing up watchdog timeouts.
 o Added vr_tx_stop()/vr_rx_stop() to wait for the end of active
   TxDMA/RxDMA cycles(draining). These routines are used in vr_stop()
   to ensure sane state of MAC before releasing allocated Tx/Rx
   buffers. vr_link_task() also takes advantage of these functions to
   get to idle state prior to restarting Tx/Rx.
 o Added vr_tx_start()/vr_rx_start() to restart Rx/Tx. By separating
   Rx operation from Tx operation vr(4) no longer need to full-reset
   the hardware in case of Tx/Rx error recovery.
 o Implemented WOL.
 o Added VT6105M specific register definitions. VT6105M has the
   following hardware capabilities.
    - Tx/Rx IP/TCP/UDP checksum offload.
    - VLAN hardware tag insertion/extraction. Due to lack of information
       for getting extracted VLAN tag in Rx path, VLAN hardware support
       was not implemented yet.
    - CAM(Content Addressable Memory) based 32 entry perfect multicast/
      VLAN filtering.
    - 8 priority queues.
 o Implemented CAM based 32 entry perfect multicast filtering for
   VT6105M. If number of multicast entry is greater than 32, vr(4)
   uses traditional hash based filtering.
 o Reflect real Tx/Rx descriptor structure. Previously vr(4) used to
   embed other driver (private) data into these structure. This type
   of embedding make it hard to work on LP64 systems.
 o Removed unused vr_mii_frame structure and MII bit-baning
   definitions.
 o Added new PCI configuration registers that controls mii operation
   and mode selection.
 o Reduced number of Tx/Rx descriptors to 128 from 256. From my
   testing, increasing number of descriptors above than 64 didn't help
   increasing performance at all. Experimentations show 128 Rx
   descriptors seems to help a lot reducing Rx FIFO overruns under
   high system loads. It seems the poor Tx performance of Rhine
   hardwares comes from the limitation of hardware. You wouldn't
   satuarte the link with vr(4) no matter how fast CPU/large number of
   descriptors are used.
 o Added vr_statistics structure to hold various counter values.

No regression was reported but one variant of Rhine III(VT6105M)
found on RouterBOARD 44 does not work yet(Reported by Milan Obuch).
I hope this would be resolved in near future.

I'd like to say big thanks to Mike Tancsa who kindly donated a Rhine
hardware to me. Without his enthusiastic testing and feedbacks
overhauling vr(4) never have been possible. Also thanks to Masayuki
Murayama who provided some good comments on the hardware's internals.
This driver is result of combined effort of many users who provided
many feedbacks so I'd like to say special thanks to them.

Hardware donated by:	Mike Tancsa (mike AT sentex dot net)
Reviewed by:		remko (initial version)
Tested by:		Mike Tancsa(x86), JoaoBR ( joao AT matik DOT com DOT br )
			Marcin Wisnicki ( mwisnicki+freebsd AT gmail DOT com )
			Stefan Ehmann ( shoesoft AT gmx DOT net )
			Florian Smeets ( flo AT kasimir DOT com )
			Phil Oleson ( oz AT nixil DOT net )
			Larry Baird ( lab AT gta DOT com )
			Milan Obuch ( freebsd-current AT dino DOT sk )
			remko (initial version)
2008-03-11 04:51:22 +00:00
Poul-Henning Kamp
98b2967900 Add VLAN capability.
Submitted by:	Slawa Olhovchenkov <slw@zxy.spb.ru>
2007-04-23 12:19:02 +00:00
Poul-Henning Kamp
28a811cd5b Remove further cobwebs: Two layers of pointless substructures. 2007-04-22 15:48:29 +00:00
Poul-Henning Kamp
27de12a9c2 Don't rename fields with #define.
Collapse two semantically identical structs.
Add missing vr_ prefix.
2007-04-22 14:57:05 +00:00
Poul-Henning Kamp
c8ea76936e Run if_vr(4) through FlexeLint and clean some of the cobwebs found. 2007-04-22 12:55:36 +00:00
Poul-Henning Kamp
4898b3a557 Add support for hw-assisted checksums on 6105M.
Sponsored by: Soekris Engineering
2007-04-17 22:59:54 +00:00
Poul-Henning Kamp
c859cda5eb No need to throw tag+handle around on the stack. 2007-04-17 17:32:39 +00:00
Poul-Henning Kamp
1c04bd82a5 Improve the if_vr driver ever so slightly.
The 6105M and 6102 does not have the DWORD alignment problem, so
don't m_defrag() every packet in the transmit path for those.

More stringent usage of tx-descriptor ring and its flags.

Tested on 6102 and 6105M, other chips may also be able to run
without the m_defrag() but I have neither hardware nor docs to
find out.

Sponsored by:	Soekris Engineering
2007-04-17 12:23:57 +00:00
Ruslan Ermilov
aaf10c46c7 Whitespace nits. 2006-09-15 11:01:23 +00:00
Gleb Smirnoff
cc4c1b6971 Consistently use if_printf() only in interface methods: if_start,
if_ioctl, if_watchdog, etc, or in functions that are used by
these methods only. In all other cases use device_printf().

This also fixes several panics, when if_printf() is called before
softc->ifp was initialized.

Submitted by:	Alex Lyashkov <umka sevcity.net>
2006-09-15 10:40:54 +00:00
John Baldwin
73dbd3da73 Remove various bits of conditional Alpha code and fixup a few comments. 2006-05-12 05:04:46 +00:00
John Baldwin
13df733045 - Use callout_*() to manage the callout and make it MPSAFE.
- Fix locking in detach(), we only need to lock across vr_stop().

Tested by:	Mike Tancsa mike at sentex dot net
MFC after:	1 week
2005-10-31 21:37:27 +00:00
John Baldwin
4cc88f8f33 - Use if_printf() and device_printf() and remove vr_unit from the softc.
I had to initialize the ifnet a bit earlier in attach so that the
  if_printf()'s in vr_reset() didn't explode with a page fault.
- Use M_ZERO with contigmalloc() rather than an explicit bzero.
2005-10-27 21:18:37 +00:00
Brooks Davis
fc74a9f93a Stop embedding struct ifnet at the top of driver softcs. Instead the
struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.

This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.

Other changes of note:
 - Struct arpcom is no longer referenced in normal interface code.
   Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
   To enforce this ac_enaddr has been renamed to _ac_enaddr.
 - The second argument to ether_ifattach is now always the mac address
   from driver private storage rather than sometimes being ac_enaddr.

Reviewed by:	sobomax, sam
2005-06-10 16:49:24 +00:00
Warner Losh
60727d8b86 /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
Bruce M Simpson
ee06f01331 Add a 'suspended' flag to softc so that we can avoid races on detach. 2004-07-09 00:12:41 +00:00
Ruslan Ermilov
629498c421 - Rewritten TX to use only two pointers to track producer/consumer.
- Added polling(4) support!
- Bugfix: don't forget to set IFF_OACTIVE when TX list is full.
- Minor: tidy up vr_encap().
2004-04-05 17:39:57 +00:00
Sam Leffler
5120abbfb4 Drop the driver lock around calls to if_input to avoid a LOR when
the packets are immediately returned for sending (e.g.  when bridging
or packet forwarding).  There are more efficient ways to do this
but for now use the least intrusive approach.

Reviewed by:	imp, rwatson
2003-11-14 19:00:32 +00:00
Mike Silbersack
1a984aad84 Add deviceids for 6105 and 6105M chips. Further changes will be necessary
to fully support these new chips, but preliminary evidence suggests that
they work acceptable with our present driver.

MFC after:	1 week
2003-02-01 01:27:05 +00:00
Mike Silbersack
97e6eca55d Switch the if_vr driver from using our generic MII routines over to
using the Rhine's internal shift registers which are designed
for the job.  This reduces the amount of time we wait around shifting
bits, and seems to work better with some chips.

Also, provide a workaround for some newer cards which report fake PHYs
at multiple addresses.  (As more cards are ID'd, I'm sure this part
of the code will have to be expanded to cover more cases.)

Submitted by:	Thomas Nystrom <thn@saeab.se>
MFC after:	1 week
2003-02-01 01:18:26 +00:00
Mike Silbersack
b72d483eb5 Fixes from Thomas Nystrom to fix hanging problems experienced by vr cards
under load.

This patch has been tested by Thomas and other for more than a month now,
and all (known) hangs seem to be solved.

Thomas's explanation of the patch:

*  Fix the problem with the printing of the RX-error.

*  Code from if_fet do better deal with the RX-recovery including a
   timeout of the RX-turnoff.

*  The call to vr_rxeof before vr_rxeoc have been moved to a point
   where the RX-part of the chip is turned off. Otherwise there is a
   window where new data could have been written to the buffer chain
   before the RX-part is turned off. If this happens the chip will see
   a busy rx-buffer. I have no evidence that this have occured but
   god knows what the chip will do in this case!

*  I have added a timeout of the TX-turnoff. I have checked and in
   my 900 MHz system the flags for turnoff (both RX & TX) is seen at
   the first check in the loop.

*  I could see that I got the VR_ISR_DROPPED interrupt sometimes and
   started to thinking about this. I then realized that no recovery is
   needed for this case and therefore I only count it as an rxerror
   (which was not done before).

*  Finally I have changed the FIFO RX threshhold to 128 bytes. When I
   did this the VR_ISR_DROPPED interrupt went away. Theory: The chip
   will receive a complete frame before it tries to write it out to
   memory then the RX threshold is set to store'n'forward. IF the frame
   is large AND the next rx frame also is large AND the bus is busy
   transfering a TX frame to the TX fifo THEN the second received
   frame wont fit in the FIFO and is then dropped. By having the RX
   threshold set to 128 the RX fifo is emptied faster.

MFC after:	5 days
2003-01-31 07:37:06 +00:00
Mike Silbersack
c7c3f58e12 Import some relevant changes from Via's if_fet driver:
1.  Detect the revision of the Rhine chip we're using.
2.  Use the force reset command on revisions which support
    it whenever the normal reset command fails.

This should solve a wide range of "my vr0 locks up with reset
failed messages" problems.  (Although the root causes should
be eventually tracked down.)

Tested by:	grenville armitage <garmitage@swin.edu.au>
Obtained from:	Via's if_fet driver
MFC after:	3 days
Approved by:	re
2002-11-25 05:15:27 +00:00
Mike Silbersack
f3b2d59e18 Improve handling of TX errors. Early reports indicate that this
elimiates the driver lockup problem reported by many.

Concepts used were taken from Via's if_fet driver.  Verification
and implementation were done by Thomas Nystrom.

Submitted by:	Thomas Nystrom <thn@saeab.se>
MFC after:	3 days
2002-08-15 04:04:53 +00:00
Mike Silbersack
16afddabdc Make sure to set both sets of registers which control the RX and TX buffer
sizes.  Previously, the end result was at the mercy of the card's default
setting.  This change will reduce the number of buffer underruns for
some users.

PR:		kern/37929
Submitted by:	Thomas Nystrom <thn@saeab.se>
MFC after:	7 days
2002-07-31 19:58:36 +00:00
Bill Paul
11c2ec4153 Close PR 22208: bring chip out of suspend mode, because Windows might
have put the chip to sleep at shutdown. This is really only for the
VT6102, but it doesn't hurt the older chips.
2001-05-14 19:13:02 +00:00
Bosko Milekic
9ed346bab0 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
Bill Paul
d1ce910572 First round of converting network drivers from spls to mutexes. This
takes care of all the 10/100 and gigE PCI drivers that I've done.
Next will be the wireless drivers, then the USB ones. I may pick up
some stragglers along the way. I'm sort of playing this by ear: if
anyone spots any places where I've screwed up horribly, please let me
know.
2000-10-13 17:54:19 +00:00
Bill Paul
1be1972c4b Close PR# 19617: add support for VIA VT6102 NICs to VIA Rhine driver. 2000-07-05 21:37:21 +00:00
Bill Paul
ae3b8c19b1 Convert the VIA Rhine driver to miibus. 1999-09-19 22:03:31 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Bill Paul
08339b4fa4 Convert the VIA Rhine driver to newbus and set it up to be compiled as
a module. Also modified the code to work on FreeBSD/alpha and added
device vr0 to the alpha GENERIC config.

While I was in the neighborhood, I noticed that I was still using
#define NFPX 1 in all of the Makefiles that I'd copied from the fxp
module. I don't really use #define Nfoo X so it didn't matter, but
I decided to customize this correctly anyway.
1999-08-10 17:15:20 +00:00
Bill Paul
727c88e9da Tweak the Macronix driver to hopefully make it more reliable:
- Change to the same transmit scheme as the PNIC driver.
- Dynamically set the cache alignment, and set burst size the same as
  the PNIC driver in mx_init().
- Enable 'store and forward' mode by default. This is the slowest option
  and it does reduce 100Mbps performance somewhat, but it's the most
  reliable setting I can find. I'm more interested in having the driver
  work reliably than trying to squeeze the best performance out of it.
  The reason I'm doing this is that on *some* systems you may see a lot
  of transmit underruns (which I can't explain: these are *fast* test
  systems) and these errors seem to cause unusual and decidedly
  non-tulip-like behavior. In normal 10Mbps mode, performance is fine
  (you can easily saturate a 10Mbps link).

Also tweak some of the other drivers:

- Increase the size of the TX ring for the Winbond, ASIX, VIA Rhine
  and PNIC drivers.
- Set a larger value for ifq_maxlen in the ThunderLAN driver. The setting
  of TL_TX_LIST_CNT - 1 is too low (the ThunderLAN driver only allocates
  20 transmit descriptors, and I don't want to fiddle with that now
  because the ThunderLAN's descriptor structure is an oddball size
  compared to the others).
1999-05-06 15:32:52 +00:00
Bill Paul
141ae16656 Add support for still more cheapo 10/100 cards: Delta Electronics and
Addtron appear to have their own VIA Rhine II and RealTek 8139 boards
with custom PCI vendor and device IDs. This commit updates the PCI
vendor and device lists in the vr and rl drivers so that we can probe
the additional devices.

Found by: nosing around the PCI vendor and device code list at:
	http://www.halcyon.com/scripts/jboemler/pci/pcicode
1999-02-23 15:38:25 +00:00
Bill Paul
6c70e5b472 Tweak the vr_start() and vr_rxeof() routines a little to improve
performance and reliability a little. There was a condition before
where transmission would stall during periods of heavy traffic
exchange between two hosts. Also set the 'want interrupt' bit in
receive descriptor control words.
1999-01-10 18:51:49 +00:00
Bill Paul
726ff6a158 An early Christmas present: add driver support for a whole bunch of
PCI fast ethernet adapters, plus man pages.

if_pn.c: Netgear FA310TX model D1, LinkSys LNE100TX, Matrox FastNIC 10/100,
         various other PNIC devices

if_mx.c: NDC Communications SOHOware SFA100 (Macronix 98713A), various
         other boards based on the Macronix 98713, 98713A, 98715, 98715A
         and 98725 chips

if_vr.c: D-Link DFE530-TX, other boards based on the VIA Rhine and
         Rhine II chips (note: the D-Link and certain other cards
         that actually use a Rhine II chip still return the PCI
         device ID of the Rhine I. I don't know why, and it doesn't
         really matter since the driver treats both chips the same
         anyway.)

if_wb.c: Trendware TE100-PCIE and various other cards based on the
         Winbond W89C840F chip (the Trendware card is identical to
         the sample boards Winbond sent me, so who knows how many
         clones there are running around)

All drivers include support for ifmedia, BPF and hardware multicast
filtering.

Also updated GENERIC, LINT, RELNOTES.TXT, userconfig and
sysinstall device list.

I also have a driver for the ASIX AX88140A in the works.
1998-12-04 18:01:24 +00:00