linux.git/drivers/net/tg3.c, branch master

broadcom: Move the Broadcom drivers

2011-08-11T02:54:39+00:00

Moves the drivers for Broadcom devices into
drivers/net/ethernet/broadcom/ and the necessary Kconfig and Makefile
changes.

CC: Eilon Greenstein 
CC: Michael Chan 
CC: Matt Carlson 
CC: Gary Zambrano 
CC: "Maciej W. Rozycki" 
Signed-off-by: Jeff Kirsher

tg3: Remove 5719 jumbo frames and TSO blocks

2011-07-28T05:39:32+00:00

The A0 revision of this chip is the only device that requires these
features to be disabled.

Signed-off-by: Matt Carlson 
Signed-off-by: David S. Miller

tg3: Break larger frags into 4k chunks for 5719

2011-07-28T05:39:32+00:00

The 5719 has bug where RDMAs larger than 4k can cause problems.  This
patch works around the problem by dividing larger DMA requests into
something the hardware can handle.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Add tx BD budgeting code

2011-07-28T05:39:32+00:00

As the driver breaks large skb fragments into smaller submissions to the
hardware, there is a new danger that BDs might get exhausted before all
fragments have been mapped.  This patch adds code to make sure tx BDs
aren't oversubscribed and flag the condition if it happens.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Consolidate code that calls tg3_tx_set_bd()

2011-07-28T05:39:31+00:00

This patch consolidates all code that populates tx BDs into a single
routine.  Setting tx BDs needs to be more carefully controlled to see if
workarounds need to be applied.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Add partial fragment unmapping code

2011-07-28T05:39:31+00:00

The following patches are going to break skb fragments into smaller
sizes.  This patch attempts to make the change easier to digest by only
addressing the skb teardown portion.

The patch modifies the driver to skip over any BDs that have a flag set
that indicates the BD isn't the beginning of an skb fragment.  Such BDs
were a result of segmentation and do not need a pci_unmap_page() call.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Generalize tg3_skb_error_unmap()

2011-07-28T05:39:31+00:00

In the following patches, unmapping skb fragments will get just as
complicated as mapping them.  This patch generalizes
tg3_skb_error_unmap() and makes it the one-stop-shop for skb unmapping.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Remove short DMA check for 1st fragment

2011-07-28T05:39:31+00:00

The first fragment of an skb should always be greater than 8 bytes.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Simplify tx bd assignments

2011-07-28T05:39:31+00:00

In the following patches, the process the driver will use to assign skb
fragments to transmit BDs will get more complicated.  To prepare for
that new code, this patch seeks to simplify how transmit BDs are
populated.  It does this by separating the code that assigns the BD
members from the logic that controls how the fields are set.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller

tg3: Reintroduce tg3_tx_ring_info

2011-07-28T05:39:31+00:00

The following patches will require the use of an additional flag in the
ring_info structure.  The use of this flag is tx path specific, so this
patch defines a specialized ring_info structure.

Signed-off-by: Matt Carlson 
Reviewed-by: Michael Chan 
Signed-off-by: David S. Miller