Commit graph

45 commits

Author SHA1 Message Date
Hannes Eder
a08b32df14 drivers/net: fix sparse warning: returning void-valued expression
Fix this sparse warning:

  drivers/net/niu.c:8850:2: warning: returning void-valued expression

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-25 23:56:04 -08:00
Neil Horman
908a7a16b8 net: Remove unused netdev arg from some NAPI interfaces.
When the napi api was changed to separate its 1:1 binding to the net_device
struct, the netif_rx_[prep|schedule|complete] api failed to remove the now
vestigual net_device structure parameter.  This patch cleans up that api by
properly removing it..

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-22 20:43:12 -08:00
Jesper Dangaard Brouer
e98def1f71 NIU: Implement discard counters, optimize
Optimize the lightly loaded case, by only synchronizing discards stats
when qlen > 10 indicate potential for drops.

Notice Robert Olsson might disagree with this patch.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18 22:27:41 -08:00
Jesper Dangaard Brouer
d231776fda NIU: Implement discard counters, info/debug statements.
Discard packet counter debug statements that can be turned on
at runtime by users to assist debugging of the driver code.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18 22:27:40 -08:00
Jesper Dangaard Brouer
b8a606b871 NIU: Implement discard counters
Implementing discard counters for the NIU driver turned out to be more
complicated than first assumed.

The discard counters for the NIU neptune chip are only 16-bit (even
though this is a 64-bit chip).  These 16-bit counters can overflow
quickly, especially considering this is a 10Gbit/s ethernet card.

The overflow indication bit is, unfortunatly, not usable as the
counter value does not wrap, but remains at max value 0xFFFF.
Resulting in lost counts until the counter is reset.

The read and reset scheme also poses a problem. Both in theory and in
practice counters can be lost in between reading nr64() and clearing
the counter nw64().  For this reason, the number of counter clearings
nw64() is limited/reduced.  On the fast-path the counters are only
syncronized once it exceeds 0x7FFF.  When read by userspace, its
syncronized fully.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18 22:27:40 -08:00
Ilpo Järvinen
9fd428761a niu: use net_device_stats nowadays available in net_device
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-28 15:52:00 -08:00
Ingo Molnar
f166400bd4 niu: fix another warning in drivers/net/niu.c
this warning:

  drivers/net/niu.c: In function ‘esr_reset’:
  drivers/net/niu.c:741: warning: ‘reset’ may be used uninitialized in this function

triggers because GCC does not recognize the (correct) error flow
between:

 - esr_read_reset() and 'reset'

Annotate it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 16:48:42 -08:00
Ingo Molnar
51e0f058c4 niu: fix warnings in drivers/net/niu.c
these warnings:

  drivers/net/niu.c: In function ‘serdes_init_niu_1g_serdes’:
  drivers/net/niu.c:451: warning: ‘sig’ may be used uninitialized in this function
  drivers/net/niu.c: In function ‘serdes_init_niu_10g_serdes’:
  drivers/net/niu.c:550: warning: ‘sig’ may be used uninitialized in this function

triggers because GCC does not recognize that the max_retry loop
always initializes 'sig', due to max_retry != 0.

Annotate them.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 16:48:12 -08:00
Robert Olsson
70340d728f niu: Naming interrupt vectors.
A patch to put names on the niu interrupt vectors according the syntax below.
 This is needed to assign correct affinity.

 > So on a multiqueue card with 2 RX queues and 2 TX queues we'd
 > have names like:
 >
 > 	eth0-rx-0
 > 	eth0-rx-1
 > 	eth0-tx-0
 > 	eth0-tx-1

Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Tested-by: Jesper Dangaard Brouer <jdb@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25 16:44:38 -08:00
Stephen Hemminger
008298231a netdev: add more functions to netdevice ops
This patch moves neigh_setup and hard_start_xmit into the network device ops
structure. For bisection, fix all the previously converted drivers as well.
Bonding driver took the biggest hit on this.

Added a prefetch of the hard_start_xmit in the fast path to try and reduce
any impact this would have.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-20 20:14:53 -08:00
Stephen Hemminger
2c9171d4ef niu: convert to net_device_ops
Convert this driver to network device ops. Compile tested only (give me hw!)

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 22:42:58 -08:00
David S. Miller
198d6ba4d7 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/isdn/i4l/isdn_net.c
	fs/cifs/connect.c
2008-11-18 23:38:23 -08:00
David S. Miller
d8c3e23d06 niu: Bump driver version and release date.
This driver is pretty mature, and the worst of the known
problems has been fixed (the 32-bit failures due to readq
implementation).

So let's finally give it a version of 1.0

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-14 14:47:29 -08:00
Santwona Behera
e3e081e1d5 NIU: Add Sun CP3260 ATCA blade support
This patch adds support for the Sun CP3260 ATCA blade which is
a N2 based ATCA blade with 2 NIU ports. The NIU ports do not
have on-board PHY.

Signed-off-by: Santwona Behera <santwona.behera@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-14 14:44:08 -08:00
David S. Miller
e23a59e1ca niu: Fix readq implementation when architecture does not provide one.
This fixes a TX hang reported by Jesper Dangaard Brouer.

When an architecutre cannot provide a fully functional
64-bit atomic readq/writeq, the driver must implement
it's own.  This is because only the driver can say whether
doing something like using two 32-bit reads to implement
the full 64-bit read will actually work properly.

In particular one of the issues is whether the top 32-bits
or the bottom 32-bits of the 64-bit register should be read
first.  There could be side effects, and in fact that is
exactly the problem here.

The TX_CS register has counters in the upper 32-bits and
state bits in the lower 32-bits.  A read clears the state
bits.

We would read the counter half before the state bit half.
That first read would clear the state bits, and then the
driver thinks that no interrupts are pending because the
interrupt indication state bits are seen clear every time.

Fix this by reading the bottom half before the upper half.

Tested-by: Jesper Dangaard Brouer <jdb@comx.dk>

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-12 14:32:54 -08:00
David S. Miller
9eeda9abd1 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/ath5k/base.c
	net/8021q/vlan_core.c
2008-11-06 22:43:03 -08:00
David S. Miller
babcda74e9 drivers/net: Kill now superfluous ->last_rx stores.
The generic packet receive code takes care of setting
netdev->last_rx when necessary, for the sake of the
bonding ARP monitor.

Drivers need not do it any more.

Some cases had to be skipped over because the drivers
were making use of the ->last_rx value themselves.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03 21:11:17 -08:00
David S. Miller
19ecb6ba80 niu: Use pci_ioremap_bar().
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03 17:05:16 -08:00
Johannes Berg
e174961ca1 net: convert print_mac to %pM
This converts pretty much everything to print_mac. There were
a few things that had conflicts which I have just dropped for
now, no harm done.

I've built an allyesconfig with this and looked at the files
that weren't built very carefully, but it's a huge patch.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-27 17:06:18 -07:00
David S. Miller
2e57572a50 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
Conflicts:

	arch/sparc64/kernel/pci_psycho.c
2008-09-16 14:11:43 -07:00
Santwona Behera
cff502a383 niu: panic on reset
The reset_task function in the niu driver does not reset the tx and rx
buffers properly. This leads to panic on reset. This patch is a
modified implementation of the previously posted fix.

Signed-off-by: Santwona Behera <santwona.behera@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12 16:04:26 -07:00
David S. Miller
fd098316ef sparc: Annotate of_device_id arrays with const or __initdata.
As suggested by Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31 01:23:17 -07:00
Andreas Schwab
38c080ffa9 niu: Fix error checking in niu_ethflow_to_class.
The callers of niu_ethflow_to_class expect zero as error, but it returns
-1 instead.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-29 23:59:20 -07:00
David S. Miller
b4c21639ab niu: Add TX multiqueue support.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17 19:21:17 -07:00
Santwona Behera
b4653e9945 niu: Add support for rx flow hash configuration.
Implemented ethtool callback functions for configuring receive flow
hashing in the niu driver.

Signed-off-by: Santwona Behera <santwona.behera@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-02 03:49:11 -07:00
Matheos Worku
f9af857489 niu: Determine the # of ports from the card's VPD data
Determine the number of physical ports from the card's VPD data.
Previous fix failed on Maramba platform which doesn't have the
"board-model" property. This fix uses the "model" property which
exists on all cards and Neptune based motherboards.

cstyle cleanup included.

Signed-off-by: Matheos Worku <matheos.worku@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12 03:10:59 -07:00
David S. Miller
be0c007ac6 niu: Fix probing regression for maramba on-board chips.
Changeset 7f7c4072ea ("niu: Determine
the # of ports from the card's VPD data") caused maramba on-board
NIU ports to stop probing properly.

The old code had a fallback that would use a num_ports value of
4 if all the probing methods failed, but that was removed.

This restores the fallback of 4 ports, to get things working
again.

Bump driver version and release date.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-04 01:34:31 -07:00
Matheos Worku
a5d6ab56da niu: Add support for Neptune FEM/NEM cards for C10 server blades
[ Minor coding style and whitespace corrections, also bump
  driver version and release date. -DaveM ]

Signed-off-by: Matheos Worku <matheos.worku@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-24 21:09:20 -07:00
Matheos Worku
7f7c4072ea niu: Determine the # of ports from the card's VPD data
[ Fix minor whitespace and coding style stuff... -DaveM ]

Signed-off-by: Matheos Worku <matheos.worku@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-24 21:02:37 -07:00
Matheos Worku
5fbd7e24da [NIU]: Add Support for Sun ATCA Blade Server.
Ports 0 and 1 of the NIU device are connected to extended fabric
through SERDES. Ports 2 and 3 are connected using RGMII Fiber mode.

[ Coding style cleanups... -DaveM ]

Signed-off-by: Matheos Worku <matheos.worku@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-28 21:25:43 -08:00
Matheos Worku
fa907895b7 [NIU]: More BMAC alt MAC address fixes.
From: Matheos Worku <Matheos.Worku@Sun.COM>

1) niu_enable_alt_mac() needs to be adjusted so that the mask
   is computed properly for the BMAC case.

2) BMAC has 6 alt MAC addresses available, not 7.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-20 00:18:09 -08:00
David S. Miller
a442585952 [NIU]: Bump driver version and release date.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-18 21:30:48 -08:00
Matheos Worku
3b5bcedeeb [NIU]: Fix BMAC alternate MAC address indexing.
BMAC port alternate MAC address index needs to start at 1. Index 0 is
used for the main MAC address.

Signed-off-by: Matheos Worku <matheos.worku@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-18 21:30:03 -08:00
Joe Perches
2caf62f6ca [NIU]: Use print_mac
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:59:15 -08:00
David S. Miller
e415e6ea0c [NIU]: Fix 1G PHY link state handling.
The code in link_status_1g() computes the active speed
and duplex but does not update the link config state
with those values.

As a result the link speed is not reported correctly
and the XIF is not reprogrammed properly on link up
events.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-17 01:49:30 -08:00
Mirko Lindner
b0de8e402d [NIU]: Support for Marvell PHY
From: Mirko Lindner <mlindner@marvell.com>

This patch makes necessary changes in the Neptune driver to support 
the new Marvell PHY. It also adds support for the LED blinking
on Neptune cards with Marvell PHY. All registers are using defines
in the niu.h header file as is already done for the BCM8704 registers.

[ Coding style, etc. cleanups -DaveM ]

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-10 02:12:44 -08:00
David S. Miller
cb77df3ec8 [NIU]: Update driver version and release date.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:29:56 -08:00
David S. Miller
3ebebccf89 [NIU]: Fix potentially stuck TCP socket send queues.
It is possible for the TX ring to have packets sit in it for unbounded
amounts of time.

The only way to defer TX interrupts in the chip is to periodically set
"mark" bits, when processing of a TX descriptor with the mark bit set
is complete it triggers the interrupt for the TX queue's LDG.

A consequence of this kind of scheme is that if packet flow suddenly
stops, the remaining TX packets will just sit there.

If this happens, since those packets could be charged to TCP socket
send queues, such sockets could get stuck.

The simplest solution is to divorce the socket ownership of the packet
once the device takes the SKB, by using skb_orphan() in
niu_start_xmit().

In hindsight, it would have been much nicer if the chip provided two
interrupt sources for TX (like basically every other ethernet chip
does).  Namely, keep the "mark" bit, but also signal the LDG when the
TX queue becomes completely empty.  That way there is no need to have
a deadlock breaker like this.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:29:56 -08:00
David S. Miller
792dd90f11 [NIU]: Missing ->last_rx update.
Noticed by Paul Lodridge.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:29:55 -08:00
Matheos Worku
406f353c85 [NIU]: Fix slowpath interrupt handling.
niu_slowpath_interrupt() expects values to be setup in lp->{v0,v1,v2}
but they aren't.  That's only done by niu_schedule_napi() which is
done later in the interrupt path.

If niu_rx_error() returns zero, and v0 is clear, hit the
RX_DMA_CTL_STATE register with a RX_DMA_CTL_STAT_MEX.

Only emit verbose RX error logs if a fatal channel or port error is
signalled.  Other cases will be recorded into statistics by
niu_log_rxchan_errors().

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-08 23:29:54 -08:00
Mirko Lindner
0c3b091b9a [NIU]: Fix link LED handling.
The LED in the current driver will not be controlled correctly. During
a link change the carrier of the link is not available and the LED
will never turn on.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-07 01:05:47 -08:00
Olof Johansson
81429973cf [NIU]: Cleanup PAGE_SIZE checks a bit
I get the following warning from a powerpc allyesconfig of current
mainline:

drivers/net/niu.c: In function 'niu_size_rbr':
drivers/net/niu.c:3113: warning: large integer implicitly truncated to unsigned type

PAGE_SIZE in this case is 64KB, so I don't quite get why gcc can't
tell that the line in question will never be reached.

I suggest the following instead, but I can unfortunately not do
anything but build test it.

Also, the driver does some other checks to make sure that PAGE_SIZE is
a power of two (BUILD_BUG_ON() in niu_init()), doesn't seem like that
could ever be untrue? Or are there really archs with non-power-of-two
PAGE_SIZE?

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-22 02:59:53 -07:00
Al Viro
a9d41192b9 [NIU]: getting rid of __ucmpdi2 in niu.o
By the time we get to that switch by PHY type, we have 8bit
value.  No need to keep it in u64 when u8 would do.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-15 12:26:33 -07:00
David S. Miller
e6a5fdf56e [NIU]: Fix write past end of array in niu_pci_probe_sprom().
Noticed by Coverity checker and reported by Adrian Bunk.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-15 12:26:31 -07:00
David S. Miller
a3138df9f2 [NIU]: Add Sun Neptune ethernet driver.
With cleanup suggestions and bugs spotted by Stephen Hemminger,
Ingo Oeser, Matheos Worku, and Oliver Hartkopp.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:54:38 -07:00