Add initialization code in pci probe for new chip and retain
compatibility with old revisions.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

New revision of netxen chip has 2MB PCI memory. Older chips
had 128MB addressable PCI memory. To retain compatibility,
this patch adds function pointers based on pci bar0 size.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Add macros for new chip revision and board configurations.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Enable multicast address filtering capabilities in the hardware.
Upto 16 multicast addresses can be programmed for each physical
port. Support "allmulti" mode, if enabled.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

o Reduce access to global arrays in data path.
o Remove duplicate/unused variables, unecessary alignment constraints.
o Use correct pci_dev instead of fallback device for consistent
  allocations.
o Disable ethtool set_eeprom functionality for now, it was only used
  for flashing firmware.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

o Remove unnecessary debug prints and functions.
o Explicitly specify pci class (0x020000) to avoid enabling
  management function.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Store physical port number in netxen_adapter structure.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

This patch #if 0's the no longer used netxen_nic_link_ok().
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

netxen_workq can now become static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Don't count rx dropped packets based on return value of netif_receive_skb(),
which is misleading.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Tested-by: NVernon Mauery <mauery@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

o eliminate tx lock in netxen adapter struct, instead pound on netdev
  tx lock appropriately.
o remove old "concurrent transmit" code that unnecessarily drops and
  reacquires tx lock in hard_xmit_frame(), this is already serialized
  the netdev xmit lock.
o reduce scope of tx lock in tx cleanup. tx cleanup operates on
  different section of the ring than transmitting cpus and is
  guarded by producer and consumer indices. This fixes a race
  caused by rx softirq preemption on realtime kernels.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Tested-by: NVernon Mauery <mauery@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

o separate and simpler irq handler for msi interrupts, avoids few checks
  than legacy mode.
o avoid redudant tx_has_work() and rx_has_work() checks in interrupt
  and napi, which can uncork irq based on racy (lockless) access to tx
  and rx ring indices. If we get interrupt, there's sufficient reason to
  schedule napi.
o replenish rx ring more often, remove self-imposed threshold rcv_free
  that prevents posting rx desc to card. This improves performance in
  low memory.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Tested-by: NVernon Mauery <mauery@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Recent netxen firmware has new scheme of generating MSI interrupts, it
raises interrupt and blocks itself, waiting for driver to unmask. This
reduces chance of spurious interrupts.

The driver will be able to deal with older firmware as well.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Tested-by: NVernon Mauery <mauery@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

This patch contains the following cleanups:
- static functions in .c files shouldn't be marked inline
- make needlessly global code static
- #if 0 unused code
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Here's the reworked patch.

This cleans up some unnecessary byte-swapping while setting up tx and
interpreting rx desc. The 64 bit rx status data should be converted
to host endian format only once and the macros just need to extract
bitfields.

This saves a spate of interrupts on pseries blades caused by buggy
(non) processing rx status ring.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Bumping up driver version to 3.4.18, several fixes have gone in since
version 3.4.2.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Resubmitting the patch.

This patch improves ethtool support for printing correct ring statistics,
segmentation offload status, etc.

Signed-off by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NDenis Cheng <crquan@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

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: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The firmware should be loaded after resetting hardware during PCI probe,
besides module unload. This fixes issue with 2nd port of multiport adapter
on powerpc blades. This patch also fixes a bug that PCI resources are not
freed if dma watchdog shutdown failed. The dma watchdog poll messages
during module unload are also suppressed.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NMilan Bag <mbag@netxen.com>
Signed-off-by: NWen Xiong <wenxiong@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Get rid of dubious casts to (void *) which causes a sparse warning.
And move largeish function from inline to the one file that uses the code,
the compiler can then decide to inline it.

Compile tested only.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Resending patch 3/3 only.

These changes allow driver close routine to be called during module unload,
to clean-up buffers and other software resources, flush queues etc. Also,
hardware is reset to pristine state.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NMilan Bag <mbag@netxen.com>
Signed-off-by: NWen Xiong <wenxiong@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch updates the various access routines to access different
control and status settings present in different register locations.
This will fix problems related to working of different ports in
multi Port card.

Signed-off by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off by: Milan Bag <mbag@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Fix incorrect link status even with switch turned OFF.
NetXen driver failed to accurately indicate when a link is up or down.
This was encountered during failover testing, when the first port
indicated that the link was up even when the 10G switch it was assigned
to in the Bladecenter was turned off completely.

Signed-off by: Wen Xiong <wenxiong@us.ibm.com>
Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Add NETXEN prefixes to macros to clean them up.
This is a cleanup patch which adds NETXEN prefix to some stand
alone macro names.
These posed compile errors when NetXen driver was backported to 2.6.9
on PPC architecture as macros like USER_START are defined in file
arch/ppc64/mm/hash_utils.c
Signed-off-by: NAndy Gospodarek <andy@greyhouse.net>
Signed-off by: Wen Xiong <wenxiong@us.ibm.com>
Acked-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Fix vmalloc errors on seen on some X86 high end machines.

Signed-off by: Milan Bag <mbag@netxen.com>
Acked-by: NMithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Fix PPC architecture specific bugs
Fixes some issues seen on Big endian machines.

Signed-off by: Milan Bag <mbag@netxen.com>
Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Port Swap feature
This patch will allow a port numbers on the card to be swapped in
host driver. This feature is applicable to cards having more than
1 port.

Signed-off by: Milan Bag <mbag@netxen.com>
Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Removal of redundant function call parameters and bug fixes.
This patch will remove the redundant paramters which were being passed to
many functions since now adapter->portnum can be used.
Signed-off-by: NMithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Make driver use multiple PCI functions.
This patch will make NetXen driver work with multiple PCI functions. This will
make the usage of memory resources as well as interrupts more independent
among different functions which results in better throughput. This change has
been done after the multiport support is added in firmware.

Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: This will fix a softlock seen on some machines.
The reason was too much time was spent waiting for hardware access
to go through.

Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NMithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NAmit S. Kale <amitkale@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Updates for ethtool support.
Signed-off-by: NAmit S. Kale <amitkale@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

NetXen: Added ethtool support for user level firmware management utilities.
Signed-off-by: NAmit S. Kale <amitkale@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

	Have fun.

>From 24f4a1a77431575a9cdfaae25adda85842099f70 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 1 Jan 2007 15:22:56 -0500
Subject: [PATCH] netxen trivial annotations
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This will use pci_register_driver() instead of pci_module_init().
Signed-off-by: NAmit S. Kale <amitkale@netxen.com>
Signed-off-by: NRichard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch is to make the driver work with multiple minor firmware versions
Signed-off-by: NAmit S. Kale <amitkale@netxen.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>