linux-toradex.git/drivers/net/ibm_newemac, branch v2.6.26.8

ibm_newemac: Fixes entry of short packets

2008-07-04T12:17:20+00:00

Short packets has to be discarded by the driver. So this patch addresses the
issue of discarding the short packets of size lesser then ethernet header
size.

Signed-off-by: Sathya Narayanan 
Signed-off-by: Stefan Roese 
Signed-off-by: Jeff Garzik

ibm_newemac: Fixes kernel crashes when speed of cable connected changes

2008-07-04T12:17:18+00:00

The descriptor pointers were not initialized to NIL values, so it was
poiniting to some random addresses which was completely invalid. This
fix takes care of initializing the descriptor to NIL values and clearing
the valid descriptors on clean ring operation.

Signed-off-by: Sathya Narayanan 
Signed-off-by: Stefan Roese 
Signed-off-by: Jeff Garzik

ibm_newemac: select CRC32 in Kconfig

2008-06-18T03:06:56+00:00

The ibm_newemac driver requires ether_crc to be defined.  Apparently it is
possible to generate a .config without CONFIG_CRC32 set which causes the
following link errors if IBM_NEW_EMAC is selected:

  LD      .tmp_vmlinux1
drivers/built-in.o: In function `emac_hash_mc':
core.c:(.text+0x2f524): undefined reference to `crc32_le'
core.c:(.text+0x2f528): undefined reference to `bitrev32'
make: *** [.tmp_vmlinux1] Error 1

This patch has IBM_NEW_EMAC select CRC32 so we don't hit this error.

Signed-off-by: Josh Boyer 
Signed-off-by: Jeff Garzik

ibm_newemac: Increase MDIO timeouts

2008-04-25T06:08:56+00:00

This patch doubles the MDIO timeouts in EMAC as there are field
cases where they are two short to communicate with some PHYs.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik

ibm_newemac: PowerPC 440EP/440GR EMAC PHY clock workaround

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

This patch adds ibm_newemac PHY clock workaround for 440EP/440GR EMAC
attached to a PHY which doesn't generate RX clock if there is no link.
The code is based on the previous ibm_emac driver stuff. The 440EP/440GR
allows controlling each EMAC clock separately as opposed to global clock
selection for 440GX.

BenH: Made that #ifdef CONFIG_PPC_DCR_NATIVE for now as dcri_* stuff doesn't
exist for MMIO type DCRs like Cell. Some future rework & improvements of the
DCR infrastructure will make that cleaner but for now, this makes it work.

Signed-off-by: Valentine Barshak 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik

ibm_newemac: PowerPC 440GX EMAC PHY clock workaround

2008-04-25T06:08:07+00:00

The PowerPC 440GX Taishan board fails to reset EMAC3 (reset timeout
error) if there's no link. Because of that it fails to find PHY
chip. The older ibm_emac driver had a workaround for that: the
EMAC_CLK_INTERNAL/EMAC_CLK_EXTERNAL macros, which toggle the Ethernet
Clock Select bit in the SDR0_MFR register. This patch does the same for
"ibm,emac-440gx" compatible chips. The workaround forces clock on -all-
EMACs, so we select clock under global emac_phy_map_lock.

BenH: Made that #ifdef CONFIG_PPC_DCR_NATIVE for now as dcri_* stuff
doesn't exist for MMIO type DCRs like Cell. Some future rework &
improvements of the DCR infrastructure will make that cleaner but
for now, this makes it work.

Signed-off-by: Valentine Barshak 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik

ibm_newemac Use status property for unused/unwired EMACs

2008-04-25T06:08:07+00:00

Convert ibm_newemac to use the of_device_is_available function when checking
for unused/unwired EMACs.  We leave the current check for an "unused" property
to maintain backwards compatibility for older device trees.  Newer device
trees should simply use the standard "status" property in the EMAC node.

Signed-off-by: Josh Boyer 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik

ibm_newemac: Fix section mismatch warnings

2008-04-25T06:08:06+00:00

This patch fixes several section mismatch warnings in the
ibm_newemac driver similar to:

WARNING: vmlinux.o(.devinit.text+0x3a04): Section mismatch in reference from the function emac_probe() to the function .devexit.text:tah_detach()
The function __devinit emac_probe() references
a function __devexit tah_detach().

Signed-off-by: Josh Boyer 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik

ibm_newemac: Add support for 460EX/GT-type MAL rx-channel handling

2008-04-25T06:08:06+00:00

On some 4xx PPC's (e.g. 460EX/GT), the rx channel number is a multiple
of 8 (e.g. 8 for EMAC1, 16 for EMAC2), but enabling in MAL_RXCASR needs
the divided by 8 value for the bitmask.

Signed-off-by: Stefan Roese 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik

ibm_newemac: Fix problem with jumbo frame support and EMAC V4.patch

2008-04-25T06:08:05+00:00

This fixes the jumbo frame support on EMAC V4 systems. Now the correct
bit is set depending on the EMAC version configured.

Tested on Kilauea (405EX) and Canyonlands (460EX).

Signed-off-by: Stefan Roese 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Jeff Garzik