linux-toradex.git/drivers/net/forcedeth.c, branch v2.6.26-rc2

forcedeth: realtek phy crossover detection

2008-04-25T06:08:57+00:00

This patch fixes an issue seen with the realtek 8201 phy. This phy has a
problem with crossover detection and it needs to be disabled. The
problem only arises on certain switches. Therefore, a module parameter
has been added to allow enabling crossover detection if needed. The
default will be set to disabled.

Signed-off-by: Ayaz Abdulla 
Signed-off-by: Jeff Garzik

forcedeth: new backoff implementation

2008-04-25T06:08:53+00:00

This patch adds support for a new backoff algorithm for half duplex supported
in newer hardware.  The old method is will be designated as legacy mode.

Re-seeding random values for the backoff algorithms are performed when a
transmit has failed due to a maximum retry count (1 to 15, where max is
considered the wraparound case of 0).

Signed-off-by: Ayaz Abdulla 
Signed-off-by: Andrew Morton 
Signed-off-by: Jeff Garzik

[netdrvr] forcedeth: internal simplifications; changelog removal

2008-04-17T19:31:33+00:00

* remove changelog from source; its kept in git repository

* consolidate descriptor version tests using nv_optimized()

* consolidate NIC DMA start, stop and drain into
  nv_start_txrx(), nv_stop_txrx(), nv_drain_txrx()

Signed-off-by: Jeff Garzik

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

2008-04-14T09:30:23+00:00

Conflicts:

	drivers/net/ehea/ehea_main.c
	drivers/net/wireless/iwlwifi/Kconfig
	drivers/net/wireless/rt2x00/rt61pci.c
	net/ipv4/inet_timewait_sock.c
	net/ipv6/raw.c
	net/mac80211/ieee80211_sta.c

forcedeth: mac address fix

2008-04-12T08:38:12+00:00

This critical patch fixes a mac address issue recently introduced.  If the
device's mac address was in correct order and the flag
NVREG_TRANSMITPOLL_MAC_ADDR_REV was set, during nv_remove the flag would get
cleared.  During next load, the mac address would get reversed because the
flag is missing.

As it has been indicated previously, the flag is cleared across a low power
transition.  Therefore, the driver should set the mac address back into the
reversed order when clearing the flag.

Also, the driver should set back the flag after a low power transition to
protect against kexec command calling nv_probe a second time.

Signed-off-by: Ayaz Abdulla 
Cc: "Yinghai Lu" 
Signed-off-by: Andrew Morton 
Signed-off-by: Jeff Garzik

fix endian lossage in forcedeth

2008-04-04T21:26:16+00:00

a) if you initialize something with le32_to_cpu(...), then |= it
with host-endian and feed to cpu_to_le32(), it's most definitely
*not* __le32.  As sparse would've told you...

b) the whole sequence is |= cpu_to_le32(host-endian constant)

Signed-off-by: Al Viro 
Signed-off-by: Jeff Garzik

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2008-04-03T05:35:23+00:00

Conflicts:

	drivers/net/s2io.c

forcedeth: fix locking bug with netconsole

2008-03-29T02:08:02+00:00

While using netconsole on forcedeth, lockdep noticed the following locking
bug:

=================================
[ INFO: inconsistent lock state ]
2.6.24-rc6 #6
Signed-off-by: Ingo Molnar 
---------------------------------
inconsistent {softirq-on-W} -> {in-softirq-W} usage.
udevd/719 [HC0[0]:SC1[1]:HE1:SE0] takes:
 (_xmit_ETHER){-+..}, at: [] dev_watchdog+0x1c/0xb9
{softirq-on-W} state was registered at:
  [] mark_held_locks+0x4e/0x66
  [] trace_hardirqs_on+0xfe/0x136
  [] _spin_unlock_irq+0x22/0x42
  [] nv_start_xmit_optimized+0x347/0x37a
  [] netpoll_send_skb+0xa4/0x147
  [] netpoll_send_udp+0x238/0x242
  [] write_msg+0x6d/0x9b
  [] __call_console_drivers+0x4e/0x5a
  [] _call_console_drivers+0x57/0x5b
  [] release_console_sem+0x11c/0x1b9
  [] register_console+0x1eb/0x1f3
  [] init_netconsole+0x119/0x15f
  [] kernel_init+0x147/0x294
  [] kernel_thread_helper+0x7/0x10
  [] 0xffffffff
irq event stamp: 950
hardirqs last  enabled at (950): [] _spin_unlock_irq+0x22/0x42
hardirqs last disabled at (949): [] _spin_lock_irq+0xc/0x38
softirqs last  enabled at (0): [] copy_process+0x375/0x126d
softirqs last disabled at (947): [] do_softirq+0x61/0xc6

other info that might help us debug this:
no locks held by udevd/719.

stack backtrace:
Pid: 719, comm: udevd Not tainted 2.6.24-rc6 #6
 [] show_trace_log_lvl+0x12/0x25
 [] show_trace+0xd/0x10
 [] dump_stack+0x57/0x5f
 [] print_usage_bug+0x10a/0x117
 [] mark_lock+0x121/0x402
 [] __lock_acquire+0x3d1/0xb64
 [] lock_acquire+0x4e/0x6a
 [] _spin_lock+0x23/0x32
 [] dev_watchdog+0x1c/0xb9
 [] run_timer_softirq+0x133/0x193
 [] __do_softirq+0x78/0xed
 [] do_softirq+0x61/0xc6
 =======================
eth1: link down

The fix is to disable/restore irqs instead of disable/enable.

Signed-off-by: Ingo Molnar 
Cc: Ayaz Abdulla 
Cc: Jeff Garzik 
Signed-off-by: Andrew Morton 
Signed-off-by: Jeff Garzik

forcedeth: Use round_jiffies for stats timer

2008-03-26T04:18:51+00:00

This timer doesn't need to run at precise times, so round it to a whole
second to decrease wakeups.

Signed-off-by: Daniel Drake 
Signed-off-by: Jeff Garzik

forcedeth: limit tx to 16

2008-03-17T12:11:07+00:00

This is a critical patch which adds a workaround for a HW bug. The patch
will limit the number of outstanding tx packets to 16. Otherwise, the HW
could send out packets with bad checksums.

The driver will still setup the tx packets into the ring, however, will
only set the Valid bit on 16 packets at a time.

Signed-off-by: Ayaz Abdulla 
Signed-off-by: Jeff Garzik