Commit Graph

38 Commits

Author SHA1 Message Date
Stephen Hemminger bea3348eef [NET]: Make NAPI polling independent of struct net_device objects.
Several devices have multiple independant RX queues per net
device, and some have a single interrupt doorbell for several
queues.

In either case, it's easier to support layouts like that if the
structure representing the poll is independant from the net
device itself.

The signature of the ->poll() call back goes from:

	int foo_poll(struct net_device *dev, int *budget)

to

	int foo_poll(struct napi_struct *napi, int budget)

The caller is returned the number of RX packets processed (or
the number of "NAPI credits" consumed if you want to get
abstract).  The callee no longer messes around bumping
dev->quota, *budget, etc. because that is all handled in the
caller upon return.

The napi_struct is to be embedded in the device driver private data
structures.

Furthermore, it is the driver's responsibility to disable all NAPI
instances in it's ->stop() device close handler.  Since the
napi_struct is privatized into the driver's private data structures,
only the driver knows how to get at all of the napi_struct instances
it may have per-device.

With lots of help and suggestions from Rusty Russell, Roland Dreier,
Michael Chan, Jeff Garzik, and Jamal Hadi Salim.

Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra,
Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan.

[ Ported to current tree and all drivers converted.  Integrated
  Stephen's follow-on kerneldoc additions, and restored poll_list
  handling to the old style to fix mutual exclusion issues.  -DaveM ]

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:47:45 -07:00
Stephen Hemminger 3f0dec7f60 skge: rearrange fields
Do some minor rearrangement of data structures to try and optimize
cache usage.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 11:01:00 -04:00
Stephen Hemminger 7e0038a414 skge: ignore unused error interrupts
The following hardware error bits only show up on Genesis chipset
and are handled elsewhere, so they can be masked off.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 11:01:00 -04:00
Stephen Hemminger 9cbe330f1f skge: use per-port phy locking
Rather than a workqueue and a per-board mutex to control PHY,
use a tasklet and spinlock. Tasklet is lower overhead and works
just as well for this.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-23 01:48:33 -04:00
Stephen Hemminger c4cd29d205 skge: fix transmitter flow control
It looks like the skge driver inherited another bug from the sk98lin code.
If I send from 1000mbit port to a machine on 100mbit port, the switch should
be doing hardware flow control, but no pause frames show up in the statistics.

This is the analog of the recent sky2 fixes. The device needs to listen
for multicast pause frames and then not discard them.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-27 04:16:04 -05:00
Stephen Hemminger a504e64ab4 skge: WOL support
Add WOL support for Yukon chipsets in skge device.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-06 19:07:44 -05:00
Stephen Hemminger 7f4b45c526 [PATCH] skge: fix sparse warnings
Fix sparse warnings from using enum as part of arithmetic
expression, and comment indentation fixes

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-07 04:59:20 -05:00
David Howells c4028958b6 WorkStruct: make allyesconfig
Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-22 14:57:56 +00:00
Stephen Hemminger 5d5c8e0378 [PATCH] skge: better flow control negotiation
Do flow control negotiation properly. Don't let auto negotiation
status limit renegotiation. Separate desired pause values from
the result of auto negotiation.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-11 04:06:09 -04:00
Stephen Hemminger a1bc9b875b [PATCH] skge: fix stuck irq when fiber down
The PHY interrupt from the internal fiber is getting
stuck on when the link is down. Add code to handle the
transition and mask it.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-11 04:06:08 -04:00
Stephen Hemminger 64f6b64dfb [PATCH] skge: fiber support
Add support for older fiber versions of the SysKonnect board. These chipsets
use an internal PHY so they require special handling. The older sk98lin
driver already supported these

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-25 20:04:29 -04:00
Stephen Hemminger 513f533e3f [PATCH] skge: use NAPI for transmit complete
The skge driver has much better performance if transmit done is handled in
NAPI softirq. Change from doing transmit locking in driver (LLTX) and
use device lock.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-06 11:19:23 -04:00
Stephen Hemminger 83405f058e [PATCH] skge: fix truncated collision threshold mask
Patch to correct broken collision threshold mask in (same problem
as sky2 driver).  Should be three bits wide, but the mask only allows
for 1 bit to be set.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-12 18:39:21 -04:00
Stephen Hemminger 7c442fa17e [PATCH] skge: transmit complete via IRQ not NAPI
The transmit side code has a number of ring problems that caused some
of the Bugzilla reports. Rather than trying to fix the details, it is safer
to rewrite the code that handles transmit completion and freeing.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-08 15:44:54 -04:00
Stephen Hemminger d85b514fd9 [PATCH] skge: use workq for PHY handling
Since accessing the PHY can take 100's of usecs, use a work queue to
allow spinning in outside of soft/hard irq.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-08 15:44:54 -04:00
Stephen Hemminger 29b4e886cb [PATCH] skge: compute available ring buffers
Don't need to keep track of available buffers, it is simpler
to just compute the value (ala e1000). Don't need tes on link up
because should always have available buffers then.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-23 17:13:54 -05:00
Stephen Hemminger cfc3ed796e [PATCH] skge: use auto masking of irqs
Improve performance of skge driver by not touching irq mask
register as much. Since the interrupt source auto-masks, the driver
can just leave it disabled until the end of the soft irq.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 16:00:50 -05:00
Stephen Hemminger 80dd857dac skge: protect interrupt mask
There is a race between updating the irq mask and setting it
which can be triggered on SMP with a bad cable.
Similar patch from Ingo Molnar and Thomas Gleixner

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2006-02-23 23:07:08 +01:00
Stephen Hemminger 2770b5172e [PATCH] skge: get rid of Yukon2 defines
Don't need to keep Yukon-2 related definitions around for Skge
driver that is only for Yukon-1 and Genesis.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-24 09:36:06 -05:00
Stephen Hemminger adba9e23b4 [PATCH] skge: clear PCI PHY COMA mode on boot
When skge is booted up, the PHY may be stuck in power down state
by the previous OS. So we may need to turn it on.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-08 23:58:07 -05:00
Stephen Hemminger 383181ac7e [PATCH] skge: check length from PHY
Cleanup receive buffer allocation and management,
Add more error handling checks from PHY and bump version.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-21 22:32:50 -04:00
Stephen Hemminger 46a60f2d71 [PATCH] skge: gmac register access errors in dual port
Merge of four previous patches and the Kconfig fix
 * Remove debug printk's
 * whitespace cleanup and version number change
 * clear interrupts, reset phy, and reset hardware on shutdown
 * ignore 64bit counter overflow interrupts
 * fix a couple of places where second port could clobber state
   of first port.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-14 08:32:07 -04:00
Stephen Hemminger 5e1705ddc8 [PATCH] skge: fibre vs copper detection cleanup
Cleanup the code that handles fibre vs copper detection.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

 drivers/net/skge.c |   26 ++++++++++++--------------
 drivers/net/skge.h |   11 ++---------
 2 files changed, 14 insertions(+), 23 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-08-16 17:03:13 -04:00
Stephen Hemminger 050ec18a35 [PATCH] skge: stop bogus sensor messages
Some versions of the Marvell yukon generate bogus sensor warning interrupts.
The driver would flood log with these messages.  Handle this situation
cleanly by masking away at boot time.

Fixes: http://bugs.gentoo.org/show_bug.cgi?id=87182

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

 drivers/net/skge.c |   24 ++++++++++--------------
 drivers/net/skge.h |    8 ++++++--
 2 files changed, 16 insertions(+), 16 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-08-16 17:03:13 -04:00
Stephen Hemminger 6abebb538d [PATCH] skge: led toggle cleanup
Cleanup code that is used to toggle LED's. Since we
get called from ethtool, can use that thread rather than
setting up a timer.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-07-31 00:40:54 -04:00
Stephen Hemminger 4cde06ed0f [PATCH] skge: ignore phy interrupts during negotiation
During autonegotiation set PHY interrupt mask to ignore
bogus speed change interrupts.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-07-31 00:40:53 -04:00
Stephen Hemminger d8a09943eb [PATCH] skge: fifo control register access fix
The code to clear fifo errors was incorrect and sending garbage
to the external phy. Removed the no longer used inline's funcs.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-07-31 00:40:53 -04:00
Stephen Hemminger 2c66851460 [PATCH] skge: whitespace fixes
Minor whitespace cleanups.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-07-31 00:40:53 -04:00
David S. Miller a31488ca4b [SKGE]: Fix build on big-endian
Missing PCI_REV_DESC define.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-05 14:24:35 -07:00
Stephen Hemminger 19a33d4e6b [PATCH] skge: Rx buffer optimization
Optimize the receive buffer management code to replenish the
buffers immediately (like tg3).

Signed-off-by: Stephen Hemmminger <shemminger@osdl.org>
2005-06-27 18:05:07 -04:00
Stephen Hemminger d25f5a6774 [PATCH] skge: handle Tx/Rx arbiter timeout
Need to handle receive and transmit packet arbiter timeouts.
Transmit arbiter timeouts happens when Gigabit sends to 100Mbit port
on same switch and pause occurs.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:07 -04:00
Stephen Hemminger 7e676d9136 [PATCH] skge: add PHY related debug messages
Cleanup messages (for debug) about PHY interrrupts, because when
user can't get driver working that is often the problem.
Use a consistent way of enabling interrupts by port.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:07 -04:00
Stephen Hemminger 45bada65c2 [PATCH] skge: make Genesis/Broadcom code work
Rewrite the code for handling the Broadcom PHY to something that
works. Remove link polling because Broadcom and Yukon don't need it.
When I wrote initial code, didn't have a genesis chipset based
board to test, so it was a non-working guess.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:06 -04:00
Stephen Hemminger b18f2091bc [PATCH] skge: remove unused declarations
Get rid of definitions for chip versions and PHY chips that
this driver does not support.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:06 -04:00
Stephen Hemminger 981d0377d9 [PATCH] skge: replace chip_rev() accessor
Replace inline accessor functions for chip revision and number of ports
with simple structure members.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:05 -04:00
Stephen Hemminger 6b0c148049 [PATCH] skge: function amd macro name change
The inlines and macro's needed some cleanup's and fixes:
 * change name of macro SKGEMAC_REG to SK_REG to better reflect usage
   and fix comments
 * ditto for SK_GEXM_REG -> SK_XMAC_REG and SKGEGMA_REG -> SK_GMA_REG

 * change skge_gm_ to just gm_ since it is just a local function and long
   names look ugly.
 * change skge_xm_ to just xm_
 * fix xm_write32 to write as two u16's with correct byte order
 * fix xm_outaddr to correctly use offset

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:05 -04:00
Stephen Hemminger 955660652a [PATCH] skge: whietspace cleanup
Cleanup whitespace around if() and switch() and end of lines

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
2005-06-27 18:05:05 -04:00
Stephen Hemminger baef58b1b0 [netdrvr] new driver skge, for SysKonnect cards 2005-05-12 20:14:36 -04:00