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macb: initial support for Cadence GEM

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The Cadence GEM is based on the MACB Ethernet controller but has a few
small changes with regards to register and bitfield placement.  This
patch detects the presence of a GEM by reading the module ID register
and setting a flag appropriately.

This handles the new HW address, USRIO and hash register base register
locations in GEM.

v3: - convert to macb_is_gem() inline rather than storing a boolean
      flag
    - handle rx_overrun stats for gem

Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
This commit is contained in:
Jamie Iles
2011-11-08 10:12:32 +00:00
committed by Jamie Iles
parent c220f8cd01
commit f75ba50bdc
4 changed files with 95 additions and 27 deletions
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16
drivers/net/ethernet/cadence/Kconfig
View File

@@ -5,8 +5,8 @@
config HAVE_NET_MACB
bool
config NET_ATMEL
bool "Atmel devices"
config NET_CADENCE
bool "Cadence devices"
depends on HAVE_NET_MACB || (ARM && ARCH_AT91RM9200)
---help---
If you have a network (Ethernet) card belonging to this class, say Y.
@@ -20,7 +20,7 @@ config NET_ATMEL
the remaining Atmel network card questions. If you say Y, you will be
asked for your specific card in the following questions.
if NET_ATMEL
if NET_CADENCE
config ARM_AT91_ETHER
tristate "AT91RM9200 Ethernet support"
@@ -32,14 +32,16 @@ config ARM_AT91_ETHER
ethernet support, then you should always answer Y to this.
config MACB
tristate "Atmel MACB support"
tristate "Cadence MACB/GEM support"
depends on HAVE_NET_MACB
select PHYLIB
---help---
The Atmel MACB ethernet interface is found on many AT32 and AT91
parts. Say Y to include support for the MACB chip.
The Cadence MACB ethernet interface is found on many Atmel AT32 and
AT91 parts. This driver also supports the Cadence GEM (Gigabit
Ethernet MAC found in some ARM SoC devices). Note: the Gigabit mode
is not yet supported. Say Y to include support for the MACB/GEM chip.
To compile this driver as a module, choose M here: the module
will be called macb.
endif # NET_ATMEL
endif # NET_CADENCE