linux.git/drivers/net/gianfar.c, branch v2.6.26-rc7 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git gianfar: Fix a bug where the pointer never moves for dma_unmap... 2008-05-13T05:31:38+00:00 Andy Fleming afleming@freescale.com 2008-05-07T18:20:55+00:00 ad5da7ab7be0a510ae69d533edf573d1ca6eec4b The loop that unmaps all of the TX Buffer Descriptors never actually moves the txbd pointer, so we were just repeatedly unmapping the first one. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
The loop that unmaps all of the TX Buffer Descriptors never actually
moves the txbd pointer, so we were just repeatedly unmapping the first one.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
gianfar: Fix a locking bug in gianfar's sysfs code 2008-05-06T16:01:34+00:00 Andy Fleming afleming@freescale.com 2008-05-02T18:00:30+00:00 f162b9d58273a9a5747211133c8ccb2de5cf5ff2 During sparse cleanup, found a locking bug. Some of the sysfs functions were acquiring a lock, and then returning in the event of an error. We rearrange the code so that the lock is released in error conditions, too. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
During sparse cleanup, found a locking bug.  Some of the sysfs functions were
acquiring a lock, and then returning in the event of an error.  We rearrange
the code so that the lock is released in error conditions, too.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
[netdrvr] gianfar: Determine TBIPA value dynamically 2008-04-29T05:57:57+00:00 Paul Gortmaker paul.gortmaker@windriver.com 2008-04-17T04:08:10+00:00 d0313587547092af7f5ee8a576793e1e5d61be89 TBIPA needs to be set to a value (on connected MDIO buses) that doesn't conflict with PHYs on the bus. By hardcoding it to 0x1f, we were preventing boards with PHYs at 0x1f from working properly. Instead, scan the bus when it comes up, and find an address that doesn't have a PHY on it. The TBI PHY configuration code then trusts that the value in TBIPA is either safe, or doesn't matter (ie - it's not an active bus with other PHYs). Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
TBIPA needs to be set to a value (on connected MDIO buses) that
doesn't conflict with PHYs on the bus.  By hardcoding it to 0x1f,
we were preventing boards with PHYs at 0x1f from working properly.
Instead, scan the bus when it comes up, and find an address that
doesn't have a PHY on it.  The TBI PHY configuration code then
trusts that the value in TBIPA is either safe, or doesn't matter
(ie - it's not an active bus with other PHYs).

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
gianfar: Fix skb allocation strategy 2008-04-25T06:08:56+00:00 Andy Fleming afleming@freescale.com 2008-04-22T22:18:29+00:00 815b97c6b8861f2e539c9ecb44c02b7b8ac11ca4 gianfar was unable to handle failed skb allocation for rx buffers, so we were spinning until it succeeded. Actually, it was worse--we were spinning for a long time, and then silently failing. Instead, we take Stephen Hemminger's suggestion to try the allocation earlier, and drop the packet if it failed. We also make a couple of tweaks to how buffer descriptors are set up. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
gianfar was unable to handle failed skb allocation for rx buffers, so
we were spinning until it succeeded.  Actually, it was worse--we were
spinning for a long time, and then silently failing.  Instead, we take
Stephen Hemminger's suggestion to try the allocation earlier, and drop the
packet if it failed.

We also make a couple of tweaks to how buffer descriptors are set up.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
net drivers: fix platform driver hotplug/coldplug 2008-04-25T06:08:54+00:00 Kay Sievers kay.sievers@vrfy.org 2008-04-18T20:50:44+00:00 72abb46101fb5c47a9592914adb221b430ff26bd Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable network platform drivers, to re-enable auto loading. NOTE: didn't change drivers/net/fs_enet/fs_enet-main.c "old binding" support. That looks problematic in the first place (it even uses the ancient "struct device_driver" binding scheme for platform_bus!) and I suspect it will vanish soonish when arch/powerpc rules the world. Also, drivers/net/ne.c would have needed more thought to sort out. [akpm@linux-foundation.org: fix sgiseeq.c] [dbrownell@users.sourceforge.net: more drivers, registration fixes] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Scott Wood <scottwood@freescale.com> Cc: Vitaly Bordug <vitb@kernel.crashing.org> Cc: Dale Farnsworth <dale@farnsworth.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Andrew Victor <andrew@sanpeople.com> Cc: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable network
platform drivers, to re-enable auto loading.

NOTE: didn't change drivers/net/fs_enet/fs_enet-main.c "old binding" support.
That looks problematic in the first place (it even uses the ancient "struct
device_driver" binding scheme for platform_bus!) and I suspect it will vanish
soonish when arch/powerpc rules the world.  Also, drivers/net/ne.c would have
needed more thought to sort out.

[akpm@linux-foundation.org: fix sgiseeq.c]
[dbrownell@users.sourceforge.net: more drivers, registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Vitaly Bordug <vitb@kernel.crashing.org>
Cc: Dale Farnsworth <dale@farnsworth.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Victor <andrew@sanpeople.com>
Cc: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
gianfar: Support NAPI for TX Frames 2008-04-17T00:06:50+00:00 Dai Haruki dai.haruki@freescale.com 2008-04-10T00:37:51+00:00 d080cd6301e107e79c6a0fc654319f8979f70549 Poll the completed TX frames in gfar_poll(). This prevents the tx completion interrupt from interfering with processing of received frames. We also disable hardware rx coalescing when NAPI is enabled. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com> 
Poll the completed TX frames in gfar_poll().  This prevents the tx
completion interrupt from interfering with processing of received
frames.

We also disable hardware rx coalescing when NAPI is enabled.

Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
gianfar: Fix Rx/Tx HW interrupt coalescing counter reset procedure. 2008-03-26T04:44:47+00:00 Andy Fleming afleming@freescale.com 2008-03-24T15:53:28+00:00 2f4489112896770d66dc2960f71174d69ee23004 - Fix Rx/Tx HW interrupt coalescing counter reset logic. Disabling is required before resetting the counter. - Update the Default both Rx and Tx coalescing timer threshold. Formerly 4 is set which is equal to 1.5 frame at the line rate of 1GbE interface, and it doesn't match to the coalescing frame count which is set to 16. Threashold 21 is matched to frame count 16. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> 
- Fix Rx/Tx HW interrupt coalescing counter reset logic. Disabling
is required before resetting the counter.

- Update the Default both Rx and Tx coalescing timer
threshold. Formerly 4 is set which is equal to 1.5 frame at the line
rate of 1GbE interface, and it doesn't match to the coalescing frame
count which is set to 16. Threashold 21 is matched to frame count 16.

Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
gianfar: Only process completed frames 2008-03-26T04:44:39+00:00 Andy Fleming afleming@freescale.com 2008-03-24T15:53:27+00:00 99da5003a5b085c12d996da1010e276e9b88672f If the LAST bit is not set in the RxBD, it's possible we're processing an incomplete frame, which is bad. While we're at it, add a constant for the error bitmask, so the whole if-clause fits on one line, and is more legible. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> 
If the LAST bit is not set in the RxBD, it's possible we're processing
an incomplete frame, which is bad.  While we're at it, add a constant
for the error bitmask, so the whole if-clause fits on one line,
and is more legible.

Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
gianfar: Fix frame size calculation when hardware VLAN acceleration is on 2008-03-26T04:44:33+00:00 Dai Haruki dai.haruki@freescale.com 2008-03-24T15:53:26+00:00 faa89577621b4296a8869e75b90a546c951df968 In gfar_change_mtu(), the frame size needs to be increased to account for the extra 4 bytes VLAN adds to the ethernet header. However, it was being increased by the length of the whole header (18 bytes), which is wrong. Signed-off-by: Dai Haruki <dai.haruki@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> 
In gfar_change_mtu(), the frame size needs to be increased to account
for the extra 4 bytes VLAN adds to the ethernet header.  However,
it was being increased by the length of the whole header (18 bytes),
which is wrong.

Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
gianfar: don't pass NULL dev ptr to DMA ops 2008-02-24T04:57:48+00:00 Becky Bruce bgill@freescale.com 2008-02-18T23:24:30+00:00 cf7822983f21617b805712eec46eb31058508d6a Change all dma op invocations in gianfar.c to actually pass in the device pointer. Currently, the value is ignored, but it will be used going forward as we implement archdata for 32-bit powerpc. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> 
Change all dma op invocations in gianfar.c to actually pass in the
device pointer.  Currently, the value is ignored, but it will be
used going forward as we implement archdata for 32-bit powerpc.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>