Commit Graph

52 Commits

Author SHA1 Message Date
Marius Strobl
05856e0b8f - Use the hme_tick() callout instead of if_slowtimo() for driving
hme_watchdog() in order to avoid races accessing if_timer.
- Use bus_get_dma_tag() so hme(4) works on platforms requiring it.
- Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that.
2006-12-06 02:07:20 +00:00
Marius Strobl
e46af1289e Remove the HME_LOCK_ASSERT() in hme_mifinit(), which was added in the
previous revision; it's actually ok when invoking hme_mifinit() from
hme_config() without the lock held.
2006-12-04 01:53:40 +00:00
Marius Strobl
f279f5ced4 - In hme_stop() mask all interrupts.
- In hme_eint() print MIF register contents on MIF interrupts.
- In hme_mifinit() don't bother to preserve the previous MIF config.
  This was mainly done in order to preserve the PHY select bit (external
  or internal PHY) but which only needs to be set as appropriate when
  reading from or writing to the desired PHY in hme_mii_{read,write}reg().
  Similarly don't bother to set the PHY select bit in hme_mii_statchg().
- In hme_mii_{read,write}reg() ignore requests to PHYs other than the
  external and internal PHY one.
- Move enabling/disabling the MII drivers of the external transceiver
  from hme_init_locked() and based on the sheer presence of an external
  to hme_mifinit() and based on the currently selected media, defaulting
  to the internal transceiver when the media hasn't been set, yet.
  Invoke hme_mifinit() from the newly added hme_mediachange_locked() so
  the setting of the MII drivers is updated when changing media.
  These changes keep the MII bus from wedging (which manifests in the HME
  and the PHYs no longer being able to communicate with each other) when
  the PHY device drivers isolate the unused PHY in two-PHY configurations
  as present in f.e. Netra t1 100 while changing media, either from
  hme_init_locked() (see also below) or via ifconfig(8). They also allow
  for using both transceivers/PHYs.
- In the newly added hme_mediachange_locked() also reset the PHYs in two-
  PHY configurations before invoking mii_mediachg(). This is required
  for successfully unisolating the previously unused PHY when switching
  between PHYs.
- Now that changing media should no longer cause problems back out rev.
  1.27 and re-enable setting the current media in hme_init_locked() (see
  the commit message of rev. 1.23 for more info).

These changes are roughly a merge of NetBSD gem.c rev. 1.32 - 1.35 (1.30
was already fixed differently in our 1.36; 1.31 and 1.32 were wrong) with
some parts reworked and things that don't make sense like setting the MII
drivers and restoring the previous MIF and XIF settings in hme_mii_{read,
write}reg() omitted.

MFC after:	2 weeks
2006-12-04 00:51:08 +00:00
Pyun YongHyeon
d13bfc93ea Fix invalid reference of mbuf chains.
Use proper pointer dereference to inform modified mbuf chains to
caller.

While I'm here perform checksum offload setup after loading DMA
maps as m_defrag(9) can return new mbuf chains.

In collaboration with:	glebius
2006-08-12 01:19:37 +00:00
Simon L. B. Nielsen
f6f4187202 Fix typo in printf string.
MFC after:	1 week
Approved by:	cperciva (mentor)
2006-05-27 09:28:59 +00:00
Pyun YongHyeon
5dbde3ff57 Backout rev. 1.46. It caused Rx checksum offload breakage on little
endian systems.

Reported by:	joerg
Tested by:	joerg
2006-03-21 12:21:51 +00:00
Pyun YongHyeon
1a98c9b4a2 fix Rx checksum computation on little endian systems.
Reported & Tested by:	brad@OpenBSD
2006-01-17 06:02:22 +00:00
Ruslan Ermilov
4a0d6638b3 - Store pointer to the link-level address right in "struct ifnet"
rather than in ifindex_table[]; all (except one) accesses are
  through ifp anyway.  IF_LLADDR() works faster, and all (except
  one) ifaddr_byindex() users were converted to use ifp->if_addr.

- Stop storing a (pointer to) Ethernet address in "struct arpcom",
  and drop the IFP2ENADDR() macro; all users have been converted
  to use IF_LLADDR() instead.
2005-11-11 16:04:59 +00:00
Pyun YongHyeon
38eae97c07 - Convert hme(4) to use TX side bus_dmamap_load_mbuf_sg(9).
- Move hardware counter reading/zeroing to hme_tick(). This saves
   8 register access per interrupt. [1]
- Use imax macro for getting max. argument between two integers.
- Invoke bus_dmamap_sync(9) first before freeing mbuf.
- Check driver queue first to reduce locking operation in hme_start_locked()
  and interrupt handler.
- Simplyfy watchdog timer setup in interrupt handler.
- Don't log normal errors such as RX overrun. If we have DMA stuck
  condition, reinitialize the driver and log it.

Reviewed by:	marius
Obtained from:	OpenBSD [1]
2005-10-25 03:56:21 +00:00
Ken Smith
55915fe666 Move hme_stop() after ether_ifdetach() and if_free() to prevent a
memory-referenced-after-free panic if the hme interface fails to
attach.

Patch obtained from:	marius
Suggested same thing:	brooks

MFC after:	3 days
2005-09-08 13:50:16 +00:00
John Baldwin
00d101cf1f - Remove redundant assertions that the driver lock is not held in attach()
and detach() since mtx_lock() will assert that already since the driver
  lock is not recursive.
- Move the call to callout_init_mtx() before hme_stop() so that the
  callout_stop() in hme_stop() doesn't operate on an uninitialized callout
  structure during attach.

Reported by:	yongari (2)
MFC after:	3 days
2005-08-24 20:28:56 +00:00
John Baldwin
9eda9d7ac5 Add callout_drain()'s to foo_detach() after calling foo_stop() to make sure
that if softclock is running on another CPU and is blocked on our driver
lock, we will wait until it has acquired the lock, seen that it was
cancelled, dropped the lock, and awakened us so that we can safely destroy
the mutex.

MFC after:	3 days
2005-08-17 17:44:32 +00:00
John Baldwin
3e17bf524e - Use callout_init_mtx() to close races between hme_stop() and hme_tick().
- Use the driver lock instead of Giant in a bus dma callback.
- Clear IFF_DRV_(RUNNING|OACTIVE) in hme_stop() instead of just clearing
  RUNNING in hme_ioctl() to be more like other ethernet drivers.
- Lock the driver lock around mii operations.
- Remove spls.
- Cleanup locking in hme_ioctl().

MFC after:	1 week
2005-08-10 20:12:25 +00:00
Robert Watson
13f4c340ae Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
ifnet.if_drv_flags.  Device drivers are now responsible for
synchronizing access to these flags, as they are in if_drv_flags.  This
helps prevent races between the network stack and device driver in
maintaining the interface flags field.

Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
some less so.

Reviewed by:	pjd, bz
MFC after:	7 days
2005-08-09 10:20:02 +00:00
Robert Watson
13b203d0d7 Modify device drivers supporting multicast addresses to lock if_addr_mtx
over iteration of their multicast address lists when synchronizing the
hardware address filter with the network stack-maintained list.

Problem reported by:	Ed Maste (emaste at phaedrus dot sandvine dot ca>
MFC after:		1 week
2005-08-03 00:18:35 +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
Pyun YongHyeon
264166b8bb According to STP2002QFP User's Guide, it seems that driver should
program RXMAC to discard frames with SA field matching the stations's
MAC address. Experimentation shows that HME receives its own frames
when it operates at 10Mbps half-duplex. With this change HME runs at
10Mbps half-duplx should work with IPv6.
(No more "DAD detected duplicate IPv6 address".)

Reported by:	jacques brierre <jbrierre AT bellsouth DOT net>
Reviewed by:	marius
2005-05-23 05:45:36 +00:00
Pyun YongHyeon
fee4d88e0f Fix "Duplicate mbuf free panic".
The cause of "Duplicate mbuf free panic" is in the programming
error of hme_load_txmbuf(). The code path of the panic is the
following.

1. Due to unknown reason DMA engine was freezed. So TX descritors
   of HME become full and the last failed attempt to transmit a
   packet had set its associated mbuf address to hme_txdesc
   structure. Also the failed packet is requeued into interface
   queue structure in order to retrasmit it when there are more
   available TX descritors.

2. Since DMA engine was freezed, if_timer starts to decrement its
   counter. When if_timer expires it tries to reset HME. During
   the reset phase, hme_meminit() is called and it frees all
   associated mbuf with descriptors. The last failed mbuf is also
   freed here.

3. After HME reset completed, HME starts to retransmit packets
   by dequeing the first packet in interface queue.(Note! the
   packet was already freed in hme_meminit()!)

4. When a TX completion interrupt is posted by the HME, driver
   tries to free the successfylly transmitted mbuf. Since the
   mbuf was freed in step2, now we get "Duplicate mbuf free panic".

However, the real cause is in DMA engine freeze. Since no fatal
errors reported via interrupts, there might be other cause of
the freeze. I tried hard to understand the cause of DMA engine
freeze but couldn't find any clues. It seems that the freeze
happens under very high network loads(e.g. 7.5-8.0 MB/s TX speed).

Though this fix is not enough to eliminate DMA engine freeze it's
better than panic.

Reported by:	jhb via sparc64 ML
2005-02-02 08:35:11 +00:00
David E. O'Brien
7c804097a4 Fix kernel builds with INVARIANTS. 2005-01-16 02:39:18 +00:00
Scott Long
bd1954cc37 Use bus_dmamap_load_mbuf_sg() for loading rx buffers. 2005-01-15 22:05:59 +00:00
Pyun YongHyeon
38fa13a6a2 Make hme(4) mpsafe
- Let hme_start()/hme_init() acquire lock and then call
   hme_start_locked()/hme_init_locked() respectivly.
 - Teardown interrupt handler before hme_detach().
 - Remove IFF_NEEDSGIANT flag and mark interrupt handler INTR_MPSAFE.
 - Set callout handler to CALLOUT_MPSAFE.
 - Add locks in hme MII interface.

Reviewed by:	jake
Tested by:	Julian C. Dunn  <jdunn at opentrend dot net>
MFC after:	2 weeks
2004-11-22 06:46:30 +00:00
Robert Watson
3acd3b73c5 Since if_hme doesn't contain locking or run with INTR_MPSAFE, mark
the interface as IFF_NEEDSGIANT so if_start is run holding Giant.
2004-08-13 23:14:50 +00:00
Marius Strobl
f7abebde9e - Use bus_space_subregion() rather than arithmetic on bus_space_handle_t. [1]
- Properly use the error variable and return it on failure in the attach-
  routines.

Reviewed by:	tmm
Inspired by:	NetBSD [1]
2004-08-12 20:37:02 +00:00
Pyun YongHyeon
74d554ae00 Implement TCP/UDP Transmit/Receive checksum offload.
Since HME doesn't compensate the checksum for UDP datagram which
can yield to 0x0, UDP transmit checksum offload is disabled by
default. The UDP Transmit checksum offload can be reactivated
by setting special link option link0 with ifconfig(8).

Approved by:	jake (mentor)
Reviewed by:	tmm
Tested by:	Herve Boulouis <amon@sockar.homeip.net>
2004-08-05 02:52:33 +00:00
Max Laier
154b8df2ed Second part of ALTQ driver modifications, covering:
an(4), ath(4), hme(4), ndis(4), vr(4) and wi(4)

Please help testing: http://people.freebsd.org/~mlaier/ALTQ_driver/

Tested by:	Vaidas Damosevicius (an, ath, wi)
		Roman Divacky (vr)
Submitted by:	yongari (hme)
2004-08-01 23:58:04 +00:00
Marius Strobl
093caf3332 Back out 1.23 until I figure out why it causes Netra t1 100 to no longer
pass any traffic. Unfortunately this means no full-duplex link with auto-
negotiation on hme(4) using DP83840A PHYs again.
I really thought I had tested this also on a Netra t1 100...
2004-06-12 02:23:06 +00:00
Marius Strobl
9d3be787c2 - Add a LLADDR() forgotten in the conversion to ether_crc32_le().
- Remove a variable no longer used after the conversion.
- While here, save on another one no longer really necessary after the
  conversion.
2004-06-10 00:06:04 +00:00
Christian Weisgerber
0e939c0cea Replace handrolled CRC calculation with ether_crc32_[lb]e(). 2004-06-09 14:34:04 +00:00
Poul-Henning Kamp
186f2b9e04 Add missing <sys/module.h> includes currently relying on nested include
in <sys/kernel.h>
2004-06-03 06:10:02 +00:00
Marius Strobl
23465eaec2 In hme_init() call mii_mediachg() to make sure the current media is set.
This is part 2/2 of fixing autonegotiation on hme(4) using DP83840A PHYs.
It appears to also fix the occasional problems to establish a link on
hme(4) using LU6612 PHYs and shouldn't hurt on those using QS6612 PHYs.

Obtained from:	NetBSD
2004-05-29 18:29:53 +00:00
Yaroslav Tykhiy
88b404a610 Mark the VLAN_MTU capability as initially enabled since it's
hardcoded to "ON" for these interfaces.
2004-05-23 19:21:48 +00:00
Maxime Henrion
866a788cc2 We don't need to initialize if_output, ether_ifattach() does it
for us.
2004-05-23 16:11:53 +00:00
Marius Strobl
55fe3a872f Spelling and style fixes.
Obtained from:	NetBSD
2004-05-22 01:56:18 +00:00
Joerg Wunsch
66764b4ce9 The Sun hme hardware supposedly supports Tx frames up to 65535 octets,
and Rx frames up to 8191 octets, so it is perfectly capable of supporting
vlan(4)-style VLAN natively.

Thus, make it support VLAN `oversize' frames.

Reviewed by:	tmm
2004-05-06 13:38:19 +00:00
Matthew N. Dodd
322b1dc4b0 Let ether_ifattach() announce our MAC address.
Submitted by:	Marius Strobl <marius@alchemy.franken.de>
2004-03-20 20:12:13 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
David E. O'Brien
aad970f1fe Use __FBSDID().
Also some minor style cleanups.
2003-08-24 17:55:58 +00:00
Marcel Moolenaar
70cba801e9 s#<foo/bar.h>#<dev/foo/bar.h>#g 2003-08-23 05:51:03 +00:00
Scott Long
f6b1c44d1f Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Thomas Moestl
aaa160f357 bus_dmamap_sync() overhaul:
- Remove NetBSD-style or-ed together BUS_DMASYNC operations, in some
  cases relaxing the (intended) syncing operation a bit.
- Add syncs before reading the descriptor rings.
- Try to combine syncs where possible to avoid overhead.
- Sync all maps before unloading them.
2003-01-21 17:22:52 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Thomas Moestl
a0de7a9e73 Add detach, shutdown, suspend and resume methods.
Tested by:	jake
2003-01-09 00:45:10 +00:00
David E. O'Brien
ae5c9e57b8 Fix module dependancy name.
PR:		46871
Submitted by:	Hartmut Brandt <brandt@fokus.gmd.de>
2003-01-08 18:53:38 +00:00
Thomas Moestl
195530b9dd Convert to use bus_dmamap_load_mbuf(); decouple software TX descriptors
from the hardware descriptors to avoid the overhead of having a DMA
map for each of them. Bump the number of hardware descriptors to 128,
and use half as many software descriptors for now.
Some minor cleanups.
2003-01-06 22:12:57 +00:00
Sam Leffler
673d91916d network interface driver changes:
o don't strip the Ethernet header from inbound packets; pass packets
  up the stack intact (required significant changes to some drivers)
o reference common definitions in net/ethernet.h (e.g. ETHER_ALIGN)
o track ether_ifattach/ether_ifdetach API changes
o track bpf changes (use BPF_TAP and BPF_MTAP)
o track vlan changes (ifnet capabilities, revised processing scheme, etc.)
o use if_input to pass packets "up"
o call ether_ioctl for default handling of ioctls

Reviewed by:	many
Approved by:	re
2002-11-14 23:54:55 +00:00
Bill Fenner
e34c1b84b7 Call bpf_mtap() on output, to catch outgoing packets for e.g. tcpdump . 2002-07-30 21:47:14 +00:00
Thomas Moestl
9f6388ba93 Miscellaneous fixes:
- always reinitialize the rx descriptors, even if the mbuf is kept.
  This should fix the hangs on ifconfig that were observed
- on an rx overflow, reinitialize the descriptor so that the interface
  will not hang
- correct some bus_dmamap_sync() calls
- correct some debug messages
- some minor nits
2002-07-14 12:09:48 +00:00
Mike Barcroft
a30d4b3270 Move the new byte order function prototypes from <sys/param.h> to
<sys/endian.h>.  This puts us in line with NetBSD and OpenBSD.
2002-04-26 22:48:23 +00:00
Thomas Moestl
7ee69ef245 Assorted fixes:
- remove some useless code from the status change handler that was intended
  to enable the the MII drivers for external phys; this is already done
  during interface initialization, and the deleted code made some
  assumptions about phy addresses that do not seem to hold true on newer
  cards. This should get at least one of the two hmes of newer Netra t1
  machines working.
- correct the interrupt resource allocation
- bump the number of RX descriptors, lower values cause promblems on some
  machines
2002-03-23 19:37:11 +00:00