pasemi_mac: performance tweaks

* Seems like we do better with a smaller RX ring, probably because chances of
  still having the SKB cached are better
* Const-ify variables to get better code generation and fewer reloads
* Move prefetching around a little, and try to prefetch the whole SKB
* Set NETIF_F_HIGHDMA
* Misc other minor tweaks
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

pasemi_mac: Convert to new dma library

Convert the pasemi_mac driver to the new platform global DMA manaagement
library. This also does a couple of other minor cleanups w.r.t. channel
management.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

pasemi: DMA engine management library

Introduce a DMA management library to manage the various DMA resources
on the PA Semi SoCs. Since several drivers need to allocate these shared
resources, provide some abstractions as well as allocation/free functions
for channels, etc.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

pasemi_mac: Move register definitions to include/asm-powerpc

Move the common register formats and descriptor layouts from
drivers/net/pasemi_mac.h to include/asm-poewrpc/pasemi_dma.h

Previously only the ethernet driver was using them, but other drivers
are coming up that will also use them, so it makes sense to share the
constants.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

pasemi_mac: RX/TX ring management cleanup

Prepare a bit for supporting multiple TX queues by cleaning up some
of the ring management and shuffle things around a bit.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

When using larger MTU's sky2 driver changes from allocating one
data area, to using multiple pages. The threshold for this was based on
a heuristic where the cost of a single allocation is bigger than one
page.  Since the allocator has changed, this heuristic is now incorrect;
instead just make the threshold be when the total size of the allocation
is greater than one page.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

The sky2 driver was not aligning the IP header on receive buffers.
This workaround is only needed on hardware with broken FIFO, newer chips
without FIFO can just DMA to unaligned address.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

- whitespaces vs tabs
- use 80 cols
- use if_mii
- use netdev_priv
- remove useless cast to void *
- PCI device id does not need to be globally available
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

drivers/net/r6040.c: In function 'rx_buf_alloc':
drivers/net/r6040.c:262: warning: passing argument 2 of 'pci_map_single' makes pointer from integer without a cast
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

Signed-off-by: Komuro <komurojun-mbn@nifty.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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

Synchronize memory access before ringing
the Tx door bell.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Disable PEX errors. The HW generates false positives.
Update RSS hash function to a symmetric algorithm.
Update T3C HW support
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Remove unused argument in sysfs methods
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Do not use skb->cb to stash unmap info,
save the info to the descriptor state.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Bump up FW version to 5.0.
Do not downgrade FW within the same major version range.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Add PCI recovery support
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Remove sysfs entries before unregistering the net devices.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Subdevice ID is not necessarily set to 1.
Use wild card for PCI device matching
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Return error code when msi-x settings fail.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

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

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

- checkpatch fixes

- fix bogus and uninitialized return codes in r6040_start_xmit()

- netdev_get_settings() fix obvious locking bug flagged by compiler warning

- set DMA consistent mask

- remove unnecessary setting of dev->base_addr
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

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

dm_write_async and dm_write_reg_async are almost identical.
Move common functionality to dm_write_async_helper (saves ~256b).
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

3c501 leads the way... 8)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

This patch #if 0's the following unused functions:
- espi.c:t1_espi_set_misc_ctrl()
- sge.c:t1_sched_set_max_avail_bytes()
- sge.c:t1_sched_set_drain_bits_per_us()
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Eliezer Tamir <eliezert@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

- Support to add/delete/store/restore 64 and 128 Ethernet addresses for Xframe I and Xframe II respectively.
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add support for configuring secondary unicast addresses. Unicast
addresses take precendece over multicast addresses when filling
the exact address filters to avoid going to promiscous mode.
When more unicast addresses are present than filter slots,
unicast filtering is disabled and all slots can be used for
multicast addresses.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>