This adds the ability to do a local loopback test for the adapter.  This
source was submitted by James Lewis <jklewis@us.ibm.com>.  Tested on PPC
and IA32 systems.

This patch adds support for PCI hot remove.  Tested on PPC64 boxes.
The driver has also been checked to comply with PCMCIA/cardbus remove
requirements, but as I don't have a PCMCIA card, it is untested.
If a PCMCIA card is removed, reads will return FFFF.  The FFFF will
cause all while loops to exit.

pcnet32 devices which do not contain an mii respond incorrectly to
ethtool commands.

Reported by VANDROVE@vc.cvut.cz and Thomas Munck Steenholdt.

If there are errors in the open routine, the driver does not correctly clean
up and free resources.

This also removes an unnecessary netif_wake_queue, correctly supports the
debug parameter, and updates the version and date.

This changes the driver to use ethtool_ops to be more modular.  There is a
net delta of just a one line between the two implementations, but permission
checking and copying to/from user space, etc. is all done in a consistent
manner by ethtool.c

This patch converts the driver to use netif_msg_* for printing messages.
Tested IA32.

This patch was originally sent by Jon Mason on Sat Jan 31.

"I created a patch that allows pcnet32 adapters sold in IBM RS/6000 systems
to be recognized in non-ppc computers.  The problem is that the Vendor ID
of this adapter is incorrect.  There is a ppc specific workaround to get
it working on that architecture (checkout
http://lxr.linux.no/source/arch/ppc/kernel/pci.c?a=ppc#L87
for the workaround), but it obviously won't fix the problem in non-ppc
architectures."

into ppc970.osdl.org:/home/torvalds/v2.5/linux

From: Anton Blanchard <anton@samba.org>

There were a number of bugs in our cmd_line handling:

- We were looking at cmd_line after it had been tokenised. Use saved_command
  line instead
- Use strlcpy instead of memcpy/explicit NULL set.
- Remove magic numbers in iseries cmd_line parsing

From: Anton Blanchard <anton@samba.org>

UP compile fixes.

From: Anton Blanchard <anton@samba.org>

Restore the old cpu names in /proc/cpuinfo, some applications parse this
field.

From: Anton Blanchard <anton@samba.org>

Some trivial oops cleanups.

From: Anton Blanchard <anton@samba.org>

Set node 0 online, otherwise the recent cpu/memory topology stuff will oops
on a non NUMA machine.

From: Linda Xie <lxiep@us.ibm.com>

set err to -ENODEV when a new node doesn't have "interrupt" property.

From: Anton Blanchard <anton@samba.org>

__get_SP used to be a function call which meant we allocated a stack
frame before calling it. This meant the SP it returned was one frame
below the current function. Lets call that bogusSP (and the real one
SP).

The new dump_stack was being tail call optimised so it remained one
frame above bogusSP. dump_stack would then store below SP (as the ABI
allows us to) and would stomp over the back link that bogusSP pointed
to (__get_SP had set the back link up so it worked sometimes, just not
all the time).

Fix this by just making __get_SP an inline that returns the current SP.

From: Stephen Rothwell <sfr@canb.auug.org.au>

I think Ben introduced this new file and iSeries doesn't need it.

From: Anton Blanchard <anton@samba.org>

Another decent optimisation found in the ia64 port, dont take the irq
descriptor lock or do the note_interrupt stuff on PER_CPU irqs (ie IPIs).

From: Anton Blanchard <anton@samba.org>

Clean up per cpu usage in segment table code.

From: Anton Blanchard <anton@samba.org>

Make a number of segment table functions static.
Clean up one duplicated slbia.

From: Anton Blanchard <anton@samba.org>

Add cpus and NUMA memory nodes to sysfs. Also add cpu physical id.

From: Anton Blanchard <anton@samba.org>

The might_sleep infrastructure doesnt like our get_users in the backtrace
code, we often end up with might_sleep warnings inside might_sleep warnings.

Instead just be careful about pointers before dereferencing them.

Also remove the hack where we only printed the bottom 32bits of the WCHAN
value.

From: Anton Blanchard <anton@samba.org>

This adds stack overflow debugging much like x86. Its pretty agressive
and checks if > 8kB out of 16kB of stack is used.

From: Rusty Russell <rusty@rustcorp.com.au>

This cleans up the rtasd logic, and also makes it hotplug CPU safe.

From: Anton Blanchard <anton@samba.org>

smp_message_pass has a few args that are never used. Remove em.
Also add memory missing memory barrier in smp_call_function_interrupt.

From: Rusty Russell <rusty@rustcorp.com.au>

1) Check for cpuids >= NR_CPUS in prom_hold_cpus: we previously
   overflowed arrays when this happened, and checking it here ensures
   that it doesn't happen elsewhere.  Still move processors to
   secondary_hold (out of OF), but we won't release them.

2) smp_iSeries_message_pass and smp_xics_message_pass don't need to
   iterate if given a specific CPU: cleanup and fix.

3) kick_cpu variants don't need to check cpu range (caller is screwed
   anyway if this happened): replaced with BUG_ON for now.

4) smp_openpic_probe and smp_xics_probe can use cpus_weight(): it's
   faster and simpler.

5) User for_each_cpu/for_each_online_cpu as appropriate.

From: Hollis Blanchard <hollisb@us.ibm.com>

fix warning and compile error without CONFIG_SMP

From: Dave Boutcher <sleddog@us.ibm.com>

fix naming collision with asm-ppc64/vio.h. The define would be set there and
this file would not get pulled in.

From: Olaf Hering <olh@suse.de>

Fix for valid nvram rtas tokens.

From: Jake Moilanen <moilanen@austin.ibm.com>

Add 970FX entry into the cputable.

From: Anton Blanchard <anton@samba.org>

Be like x86 and enable -funit-at-a-time.
Use the check_gcc hook when enabling -mcpu=power4/-mtune=power4.

From: Anton Blanchard <anton@samba.org>

Add DEBUG_STACK_USAGE to ppc64

From: Anton Blanchard <anton@samba.org

print useful flags in oops, like x86

From: Jeremy Kerr <jk@ozlabs.org>

Add a ppc64 archhelp.

From: Dave Hansen <haveblue@us.ibm.com>

Allow CROSS32_COMPILE to be set via environment variable