This patch adds netpoll support for the uli526x ethernet driver --
simply call the interrupt handler for polling.
To do this without disable_irq()/enable_irq() pair we should fully
protect the handler. Luckily, it's already using irqsave spinlock,
the only unprotected place is interrupts re-enabling write. It was
safe to re-enable interrupts without holding the spinlock, but with
netpoll possibility now it doesn't seem so.
Patch was tested using netconsole and KGDBoE.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch fixes uli526x driver's issues on a PowerPC boards: uli chip
is unable to receive the packets.
It appears that send_frame_filter prepares the setup frame in the
endianness unsafe manner. On a big endian machines we should shift
the address nibble by two bytes.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This patch works around the MWI bug on the DC21143 rev 65 Tulip by
ensuring that the receive buffers don't end on a cache line boundary
(as documented in the errata).
This patch is required for the MIPS based Cobalt Qube/RaQ as
supporting the extra PCI commands seems to reduce the chance of a hard
lockup between the Tulip and the PCI bridge.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
winbond-840 shares tulip.h with the tulip driver, because they share
many (but not all) of the same register definitions.
This is useful for the register definitions, but not helpful when it
comes to symbols that are shared among the tulip driver's C modules,
but not meant to be shared outside that one driver.
Thus, PKT_BUF_SZ is a symbol internal to tulip, but it was intruding
upon a similar symbol in winbond-840's namespace. This was not a
problem as long as the two symbols had the same value, but upcoming
patches result in differing symbol values.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
If "location" is > "addr_len" bits, the high bits of location would interfere
with the READ_CMD sent to the eeprom controller.
A patch was submitted to bug:
http://bugzilla.kernel.org/show_bug.cgi?id=4420
which simply truncated the "location", read whatever was in "location
modulo addr_len", and returned that value. That avoids confusing the
eeprom but seems like the wrong solution to me.
Correct would be to not read beyond "1 << addr_len" address of the eeprom.
I am submitting two changes to implement this:
1) tulip_read_eeprom will return zero (since we can't return -EINVAL)
if this is attempted (defensive programming).
2) In tulip_core.c, fix the tulip_read_eeprom caller so they don't
iterate past addr_len bits and make sure the entire tp->eeprom[]
array is cleared.
I konw we don't strictly need both. I would prefer both in the tree
since it documents the issue and provides a second "defense" from
the bug from creeping back in.
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This untested patch _should_ fix:
"(net de2104x) Kernel panic with de2104x tulip driver on boot"
http://bugzilla.kernel.org/show_bug.cgi?id=3156
But the bug submitter isn't responding. Same fix has been applied
to tulip.c (several years ago) and uli526x.c (Feb 2008) drivers.
[ The panic reported in the bug report was removed in a recently
(march 2008) accepted patch from Ondrej Zary. ]
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The xircom_tulip_cb driver has been replaced the xircom_cb driver, and
since it depended on BROKEN_ON_SMP it e.g. was no longer present in many
distribution kernels.
This patch therefore removes it.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
When the chip dies (probably because of a bug somewhere in the driver),
de_stop_rxtx() fails and changing the media type crashes the whole machine.
Replace BUG_ON() in de_set_media() with a warning.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Changes in other networking paths uncovered a bug in the xircom_cb
driver which made the kernel spew lots of the following error messages:
BUG eth1 code -5 qlen 0
It turned out that the driver returned -EIO when there was no
descriptor available for sending packets. It should return
NETDEV_TX_BUSY instead. This was discussed on the netdev list before,
see http://thread.gmane.org/gmane.linux.network/84603 .
Signed-off-by: Erik Mouw <mouw@nl.linux.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Changeset 16b110c3fd (dmfe warning fix)
bothed up the offsets read from the SROM so that it doesn't read the
same datums it used to.
The change made transformations like turning:
"srom + 34"
into
"(__le32 *)srom + 34/4"
which doesn't work because 4 does not divide evenly
into 34 so we're using a different pointer offset
than in the original code.
I've changed theses cases in dmfe_parse_srom() to
consistently use "(type *)(srom + offset)" preserving
the offsets from the original code.
Signed-off-by: David S. Miller <davem@davemloft.net>
* (trivial) endianness annotations
* don't bother with del_timer() from the inside of timer handler itself
* disable_ast() really ought to do del_timer_sync(), not del_timer()
* clean the timer handling in general.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* descriptors inside the rx and tx rings are l-e
* don't cpu_to_le32() the argument of outl()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Drivers do this to try to break out of the ->poll()'ing loop
when the device is being brought administratively down.
Now that we have a napi_disable() "pending" state we are going
to solve that problem generically.
Signed-off-by: David S. Miller <davem@davemloft.net>
This should fix the kernel warn/oops reported while routing.
The tulip driver has a fencepost bug with new NAPI in 2.6.24
It has an off by one bug if a full quantum is reached.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Accidently I reversed the order of pci_save_state and
pci_set_power_state in .suspend()/.resume() callbacks
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
