Performance optimizations, changes in these areas:
- RX and TX checksum offload
- correct maximum MTU
- don't use TX interrupts anymore, use a timer instead
- remove some superfluous barriers
- improve RX RAM full handling
From: Utz Bacher <utz.bacher@de.ibm.com>
Signed-off-by: Jens Osterkamp <jens.osterkamp@de.ibm.com>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
The driver incorrectly used dma_addr_t to describe
HW structures and consequently broke when that type
was changed in 2.6.15-rc.
This changed spidernet to use u32 for 32 bit HW defined
structure elements.
From: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Signed-off-by: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
request_firmware() is sometimes problematic, especially
in initramfs, reading the firmware from Open Firmware
is much preferrable.
We still try to get the firmware from the file system
first, in order to support old SLOF releases and to allow
updates of the spidernet firmware without reflashing
the system.
From: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Signed-off-by: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Uploading the device firmware may fail if wrong input data
was provided by the user. This checks for the condition.
From: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Signed-off-by: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
All interrupts controlled by the extended mask register are also
masked by a bit in the main mask register, so there is no need to
directly manipulate the extended mask register.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 81 ++++++++++++++++++----------------------------------------
1 file changed, 26 insertions(+), 55 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Move code from helper functions mv643xx_eth_real_open and mv643xx_eth_real_stop
as they are no longer needed.
Signed-off-by Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 109 +++++++++++++++++++++++-----------------------------------
1 file changed, 45 insertions(+), 64 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This patch removes the NETIF_F_HW_CSUM flag to be able to use other protocols
than IPv4. Hardware checksums for IPv4 should continue to work because
NETIF_F_IP_CSUM is still set. The sanity-check has been enhanced to check
the used protocol and to not access skb->iph for non-ipv4-packets.
Signed-off-by: Wolfram Joost <pegasos@frokaschwei.de>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This driver has historically held a spin_lock during the entire open
and stop functions and while receiving multiple packets. This is
unecessarily long and holds locks during calls that may sleep.
This patch reduces the size of windows where locks are held.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 172 ++++++++++++++++++++++++++++++----------------------------
1 file changed, 91 insertions(+), 81 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
The Marvell mv643xx ethernet hardware requires that DMA buffers be
aligned to 8-byte boundaries. This patch satisfies this requirement.
Buffers allocated by dev_alloc_skb() only have 4-byte alignment when
slab debugging is enabled.
Also, document that the 2-byte offset to align the IP packets on
receive is a hardware feature and is not tied to NET_IP_ALIGN.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This code is adapted from code in a ppc-specific version of the driver.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 201 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 197 insertions(+), 4 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Fix a NULL pointer dereference.
Fill in the buf_ptr and byte_cnt fields of pkt_info in
eth_tx_return_desc().
Signed-off-by: Paolo Galtieri <pgaltieri@mvista.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 51 +++++++++++++++++++++------------------------------
1 file changed, 21 insertions(+), 30 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
If you do a dma_map_single you must do dma_unmap_single and if you do
a dma_map_page you must do a dma_unmap_page.
Signed-off-by: Paolo Galtieri <pgaltieri@mvista.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
mv643xx_eth.c | 51 +++++++++++++++++++++------------------------------
1 file changed, 21 insertions(+), 30 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
