linux-toradex.git/drivers/net/tg3.c, branch v2.6.36-rc4

tg3: Update version to 3.113

2010-08-02T22:46:33+00:00

This patch updates the tg3 version to 3.113.

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

tg3: Migrate tg3_flags to phy_flags

2010-08-02T22:46:33+00:00

This patch moves most of the phy related flag definitions over to the
phyflags member and changes the code accordingly.

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

tg3: Create phy_flags and migrate phy_is_low_power

2010-08-02T22:46:32+00:00

This patch deletes the link_config.phy_is_low_power flag and creates a
new phy_flags device member to store all phy related settings.  All the
code is converted accordingly.

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

tg3: Add phy-related preprocessor constants

2010-08-02T22:46:32+00:00

This patch replaces some instances of hardcoded phy register values with
preprocessor equivalents.

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

tg3: Add error reporting to tg3_phydsp_write()

2010-08-02T22:46:31+00:00

This patch adds error reporting to the tg3_phydsp_write() function and
converts a few more locations to use this function over the inlined
equivalent.

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

tg3: Improve small packet performance

2010-08-02T22:46:31+00:00

smp_mb() inside tg3_tx_avail() is used twice in the normal
tg3_start_xmit() path (see illustration below).  The full memory
barrier is only necessary during race conditions with tx completion.
We can speed up the tx path by replacing smp_mb() in tg3_tx_avail()
with a compiler barrier.  The compiler barrier is to force the
compiler to fetch the tx_prod and tx_cons from memory.

In the race condition between tg3_start_xmit() and tg3_tx(),
we have the following situation:

tg3_start_xmit()                       tg3_tx()
    if (!tg3_tx_avail())
        BUG();

    ...

    if (!tg3_tx_avail())
        netif_tx_stop_queue();         update_tx_index();
        smp_mb();                      smp_mb();
        if (tg3_tx_avail())            if (netif_tx_queue_stopped() &&
            netif_tx_wake_queue();         tg3_tx_avail())

With smp_mb() removed from tg3_tx_avail(), we need to add smp_mb() to
tg3_start_xmit() as shown above to properly order netif_tx_stop_queue()
and tg3_tx_avail() to check the ring index.  If it is not strictly
ordered, the tx queue can be stopped forever.

This improves performance by about 3% with 2 ports running
bi-directional 64-byte packets.

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

tg3: Remove 5720, 5750, and 5750M

2010-08-02T22:46:30+00:00

These devices were never released to the public.

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

tg3: Detect APE firmware types

2010-08-02T22:46:29+00:00

This patch adds code to determine the APE firmware type and report this
along with the firmware version.

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

tg3: Restrict ASPM workaround devlist

2010-08-02T22:46:29+00:00

The ASPM workaround setting obtained from NVRAM only works with devices
older than 5717.  This patch enforces the restriction.

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

tg3: Manage gphy power for CPMU-less devs only

2010-08-02T22:46:28+00:00

This patch changes the code to only manage the PCIe gphy power for
CPMU-less devices only.  The CPMU takes over management for newer
chips.

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