Commit Graph

43 Commits

Author SHA1 Message Date
Gleb Smirnoff
61a3ac6e27 The MII layer shouldn't care about administrative status of an
interface. Make MII drivers forget about 'struct ifnet'.

Later plan is to provide an administrative downcall from ifnet
layer into drivers, to inform them about administrative status
change. If someone thinks that processing MII events for an
administratively down interface is a big problem, then drivers
would turn MII processing off.

The following MII drivers do evil things, like strcmp() on
driver name, so they still need knowledge of ifnet and thus
include if_var.h. They all need to be fixed:

sys/dev/mii/brgphy.c
sys/dev/mii/e1000phy.c
sys/dev/mii/ip1000phy.c
sys/dev/mii/jmphy.c
sys/dev/mii/nsphy.c
sys/dev/mii/rgephy.c
sys/dev/mii/truephy.c

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 18:40:17 +00:00
Gleb Smirnoff
76039bc84f The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 17:58:36 +00:00
Gleb Smirnoff
c6499eccad Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.
2012-12-04 09:32:43 +00:00
Dimitry Andric
29658c96ce Remove duplicate const specifiers in many drivers (I hope I got all of
them, please let me know if not).  Most of these are of the form:

static const struct bzzt_type {
	[...list of members...]
} const bzzt_devs[] = {
	[...list of initializers...]
};

The second const is unnecessary, as arrays cannot be modified anyway,
and if the elements are const, the whole thing is const automatically
(e.g. it is placed in .rodata).

I have verified this does not change the binary output of a full kernel
build (except for build timestamps embedded in the object files).

Reviewed by:	yongari, marius
MFC after:	1 week
2012-11-05 19:16:27 +00:00
Marius Strobl
e4029d4cac - Change the module order of these MAC drivers to be last so they are
deterministically handled after the corresponding PHY drivers when
  loaded as modules. Otherwise, when these MAC/PHY driver pairs are
  compiled into a single module probing the PHY driver may fail. This
  makes r151438 and r226154 actually work. [1]
  Reported and tested by: yongari (fxp(4))
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

Submitted by:	jhb [1]
MFC after:	3 days
2012-05-11 02:40:40 +00:00
Marius Strobl
604f5f1f77 Use DEVMETHOD_END. 2011-11-23 20:27:26 +00:00
Marius Strobl
4b7ec27007 - There's no need to overwrite the default device method with the default
one. Interestingly, these are actually the default for quite some time
  (bus_generic_driver_added(9) since r52045 and bus_generic_print_child(9)
  since r52045) but even recently added device drivers do this unnecessarily.
  Discussed with: jhb, marcel
- While at it, use DEVMETHOD_END.
  Discussed with: jhb
- Also while at it, use __FBSDID.
2011-11-22 21:28:20 +00:00
Marius Strobl
8c1093fc50 - Import the common MII bitbang'ing code from NetBSD and convert drivers to
take advantage of it instead of duplicating it. This reduces the size of
  the i386 GENERIC kernel by about 4k. The only potential in-tree user left
  unconverted is xe(4), which generally should be changed to use miibus(4)
  instead of implementing PHY handling on its own, as otherwise it makes not
  much sense to add a dependency on miibus(4)/mii_bitbang(4) to xe(4) just
  for the MII bitbang'ing code. The common MII bitbang'ing code also is
  useful in the embedded space for using GPIO pins to implement MII access.
- Based on lessons learnt with dc(4) (see r185750), add bus barriers to the
  MII bitbang read and write functions of the other drivers converted in
  order to ensure the intended ordering. Given that register access via an
  index register as well as register bank/window switching is subject to the
  same problem, also add bus barriers to the respective functions of smc(4),
  tl(4) and xl(4).
- Sprinkle some const.

Thanks to the following testers:
Andrew Bliznak (nge(4)), nwhitehorn@ (bm(4)), yongari@ (sis(4) and ste(4))
Thanks to Hans-Joerg Sirtl for supplying hardware to test stge(4).

Reviewed by:	yongari (subset of drivers)
Obtained from:	NetBSD (partially)
2011-11-01 16:13:59 +00:00
Marius Strobl
112a855de7 - Follow the lead of dcphy(4) and pnphy(4) and move the reminder of the PHY
drivers that only ever attach to a particular MAC driver, i.e. inphy(4),
  ruephy(4) and xlphy(4), to the directory where the respective MAC driver
  lives and only compile it into the kernel when the latter is also there,
  also removing it from miibus.ko and moving it into the module of the
  respective MAC driver.
- While at it, rename exphy.c, which comes from NetBSD where the MAC driver
  it corresponds to also is named ex(4) instead of xl(4) but that in FreeBSD
  actually identifies itself as xlphy(4), and its function names accordingly
  for consistency.
- Additionally while at it, fix some minor style issues like whitespace
  in the register headers and add multi-inclusion protection to inphyreg.h.
2011-10-08 12:33:10 +00:00
Warner Losh
3cb589872c Really spell suppress the right way 2011-06-21 22:17:28 +00:00
Warner Losh
0dcfaeeec5 My broken 'u' key scks! 2011-06-21 22:16:04 +00:00
Warner Losh
aa0ea4af6d Supress warning that command didn't complete when the parent bus
thinks the card is gone.
2011-06-21 20:51:09 +00:00
Pyun YongHyeon
de53eba037 Fix build. 2011-05-07 04:40:44 +00:00
Pyun YongHyeon
3ea23f341b Remove unneeded use of variable status. This should have been done
in r221557.
2011-05-07 02:19:46 +00:00
Pyun YongHyeon
0b96ba12be XL_DMACTL is 32bit register, use 32bit write macro.
While I'm here add more bits for the register.
2011-05-07 00:25:12 +00:00
Pyun YongHyeon
7498e81a2d Rearm watchdog timer if driver kick controller to recover from TX
underrun error.
While here, prepend 0x to status code to show TX status is hex
number.
2011-05-07 00:18:58 +00:00
Pyun YongHyeon
48dcbc3370 Rename xl_stats_update() callout handler to xl_tick() and move MII
tick driving logic to xl_tick(). Now xl_tick() handles MII tick as
well as periodic updating of statistics.
This change removes a hack used in interrupt handler where it
wanted to update statistics without driving MII tick.
2011-05-07 00:06:02 +00:00
Pyun YongHyeon
4a5c788456 Reuse the TX descriptor(DPD) if xl_encap() failed instead of just
picking the next available one. This may explain why xl(4) sees TX
underrun error with no queued frame. I hope this addresses a long
standing xl(4) watchdog timeout issue as well.

Obtained from:	OpenBSD
2011-05-06 23:49:10 +00:00
Pyun YongHyeon
5a13764b11 Change xl_rxeof() a bit to return the number of processed frames in
RX descriptor ring. Previously it returned the number of frames
that were successfully passed to upper stack which in turn means it
ignored frames that were discarded due to errors. The number of
processed frames in RX descriptor ring is used to detect whether
driver is out of sync with controller's current descriptor pointer.
Returning number of processed frames reduces unnecessary (probably
wrong) re-synchronization.

While here, remove unnecessary local variable initialization.
2011-05-06 23:01:29 +00:00
Pyun YongHyeon
74517b0724 Terminate interrupt handler if driver detect it's not running.
Also add check for driver running state before trying to send
frames. While I'm here, use for loop.
2011-05-06 22:55:53 +00:00
Pyun YongHyeon
f321edf95a Updating status word should be the last operation of UPD structure
renewal.  Disable instruction reordering by adding volatile to
xl_list_onefrag structure.
2011-05-06 22:45:13 +00:00
Pyun YongHyeon
0ecf6b16c8 Call bus_dmamap_sync() only after TX DPD update. 2011-05-06 22:36:43 +00:00
Pyun YongHyeon
4f58a95ce1 Set status word once instead of twice. For 3C90xB/3C90xC, frame
length of status word is ignored. While here move bus_dmamap_sync()
up where DMA map is loaded.
2011-05-06 22:26:57 +00:00
Pyun YongHyeon
78564eda2d Remove unnecessary htole32/le32toh dance. 2011-05-06 22:16:43 +00:00
Pyun YongHyeon
dd0a76883f Rewrite RX filter logic and provide controller specific filter
handler for 3C90x and 3C90xB/C respectively.  This simplifies ioctl
handler as well as enhancing readability.
While I'm here don't reprogram multicast filter when driver is not
running.
2011-05-06 22:01:46 +00:00
John Baldwin
3b0a4aef96 Do a sweep of the tree replacing calls to pci_find_extcap() with calls to
pci_find_cap() instead.
2011-03-23 13:10:15 +00:00
Marius Strobl
006aaeeadf Allocate the DMA memory shared between the host and the controller as
coherent.

MFC after:	2 weeks
2011-03-11 22:25:34 +00:00
Pyun YongHyeon
aee0e78619 Add flow control for 3C905B and newer controllers. Note, these
controllers support RX pause only.

Reviewed by:	marius
2010-11-14 23:53:13 +00:00
Marius Strobl
8edfedadeb Correct an inverted check in r213893. 2010-11-05 19:38:28 +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
9ae11bbaa6 Implement basic WOL support. Note, not all xl(4) controllers
support WOL. Some controllers require additional 3-wire auxiliary
remote wakeup connector to draw power. More recent xl(4)
controllers may not need the wakeup connector though.
2010-08-23 19:18:50 +00:00
Pyun YongHyeon
ac68109179 Move xl_reset() to xl_init_locked(). This will make driver
initialize controller from a known good state. Previously driver
used to issue controller reset while TX/RX DMA are in progress.
I guess resetting controller in active TX/RX DMA cycle is to ensure
stopping I/Os in xl_shutdown(). I remember some buggy controllers
didn't respond with stop command if controller is under high
network load at the time of shutdown so resetting controller was
the only safe way to stop the I/Os. However, from my experiments,
controller always responded with stop command under high network
load so I think it's okay to remove the xl_reset() in
device_shutdown handler.
Resetting controller also will clear configured RX filter which
in turn will make WOL support hard because driver have to reprogram
RX filter in WOL handler as well as setting station address.
2010-08-23 18:51:31 +00:00
Pyun YongHyeon
27b031a9ad Remove unnecessary controller reinitialization by checking
IFF_DRV_RUNNING flag.
2010-08-23 00:31:55 +00:00
Pyun YongHyeon
a3835274a4 Clean up SIOCSIFCAP handler and allow RX checksum offloading could
be controlled by user.
2010-08-23 00:24:12 +00:00
Warner Losh
f33a1c1621 cardbus -> CardBus 2010-01-03 23:29:49 +00:00
Pyun YongHyeon
8e95322a35 Make xl(4) build with Tx checksum offload.
PR:		kern/136409
Approved by:	re (kib)
2009-07-09 01:58:59 +00:00
Robert Watson
eb956cd041 Use if_maddr_rlock()/if_maddr_runlock() rather than IF_ADDR_LOCK()/
IF_ADDR_UNLOCK() across network device drivers when accessing the
per-interface multicast address list, if_multiaddrs.  This will
allow us to change the locking strategy without affecting our driver
programming interface or binary interface.

For two wireless drivers, remove unnecessary locking, since they
don't actually access the multicast address list.

Approved by:	re (kib)
MFC after:	6 weeks
2009-06-26 11:45:06 +00:00
Attilio Rao
1abcdbd127 When user_frac in the polling subsystem is low it is going to busy the
CPU for too long period than necessary.  Additively, interfaces are kept
polled (in the tick) even if no more packets are available.
In order to avoid such situations a new generic mechanism can be
implemented in proactive way, keeping track of the time spent on any
packet and fragmenting the time for any tick, stopping the processing
as soon as possible.

In order to implement such mechanism, the polling handler needs to
change, returning the number of packets processed.
While the intended logic is not part of this patch, the polling KPI is
broken by this commit, adding an int return value and the new flag
IFCAP_POLLING_NOCOUNT (which will signal that the return value is
meaningless for the installed handler and checking should be skipped).

Bump __FreeBSD_version in order to signal such situation.

Reviewed by:	emaste
Sponsored by:	Sandvine Incorporated
2009-05-30 15:14:44 +00:00
Kip Macy
cb2ff24c38 remove dead code with reference to IFQ_HANDOFF 2009-04-27 22:53:35 +00:00
Pyun YongHyeon
2b574f3152 To make it easy whether xl(4) missed Tx completion interrupt check
number of queued packets in watchdog timeout handler. If there are
no queued packets just print a informational message and return
without resetting controller. Also fix to invoke correct Tx
completion handler as 3C905B needs different handler.
2009-04-21 00:42:11 +00:00
Pyun YongHyeon
ba65e0cc90 Clear IFF_DRV_OACTIVE flag if one of queued packets was transmitted.
Previously it used to clear the flag only when the transmit queue
is empty which may slow down Tx performance.
While I'm here check whether driver is running and whether we can
queue more packets in if_start handler. This fixes occasional
watchdog timeouts.

Reported by:	xer < xernet <> hotmail dot it >
Tested by:	xer < xernet <> hotmail dot it >
2009-04-21 00:34:31 +00:00
Warner Losh
155a83e87a remove now-redunant cardbus attachment. 2009-03-09 13:23:54 +00:00
Warner Losh
83825b7109 Move the xl driver form sys/pci to sys/dev/xl for consistency. 2008-08-10 09:45:52 +00:00