mirror of
https://github.com/torvalds/linux.git
synced 2024-12-30 14:52:05 +00:00
1d3bb99648
Based on BenH's earlier work, this is a new version of the EMAC driver for the built-in ethernet found on PowerPC 4xx embedded CPUs. The same ASIC is also found in the Axon bridge chip. This new version is designed to work in the arch/powerpc tree, using the device tree to probe the device, rather than the old and ugly arch/ppc OCP layer. This driver is designed to sit alongside the old driver (that lies in drivers/net/ibm_emac and this one in drivers/net/ibm_newemac). The old driver is left in place to support arch/ppc until arch/ppc itself reaches its final demise (not too long now, with luck). This driver still has a number of things that could do with cleaning up, but I think they can be fixed up after merging. Specifically: - Should be adjusted to properly use the dma mapping API. Axon needs this. - Probe logic needs reworking, in conjuction with the general probing code for of_platform devices. The dependencies here between EMAC, MAL, ZMII etc. make this complicated. At present, it usually works, because we initialize and register the sub-drivers before the EMAC driver itself, and (being in driver code) runs after the devices themselves have been instantiated from the device tree. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Jeff Garzik <jeff@garzik.org>
71 lines
1.5 KiB
Plaintext
71 lines
1.5 KiB
Plaintext
config IBM_EMAC
|
|
tristate "PowerPC 4xx on-chip Ethernet support"
|
|
depends on 4xx && !PPC_MERGE
|
|
help
|
|
This driver supports the PowerPC 4xx EMAC family of on-chip
|
|
Ethernet controllers.
|
|
|
|
config IBM_EMAC_RXB
|
|
int "Number of receive buffers"
|
|
depends on IBM_EMAC
|
|
default "128"
|
|
|
|
config IBM_EMAC_TXB
|
|
int "Number of transmit buffers"
|
|
depends on IBM_EMAC
|
|
default "64"
|
|
|
|
config IBM_EMAC_POLL_WEIGHT
|
|
int "MAL NAPI polling weight"
|
|
depends on IBM_EMAC
|
|
default "32"
|
|
|
|
config IBM_EMAC_RX_COPY_THRESHOLD
|
|
int "RX skb copy threshold (bytes)"
|
|
depends on IBM_EMAC
|
|
default "256"
|
|
|
|
config IBM_EMAC_RX_SKB_HEADROOM
|
|
int "Additional RX skb headroom (bytes)"
|
|
depends on IBM_EMAC
|
|
default "0"
|
|
help
|
|
Additional receive skb headroom. Note, that driver
|
|
will always reserve at least 2 bytes to make IP header
|
|
aligned, so usually there is no need to add any additional
|
|
headroom.
|
|
|
|
If unsure, set to 0.
|
|
|
|
config IBM_EMAC_PHY_RX_CLK_FIX
|
|
bool "PHY Rx clock workaround"
|
|
depends on IBM_EMAC && (405EP || 440GX || 440EP || 440GR)
|
|
help
|
|
Enable this if EMAC attached to a PHY which doesn't generate
|
|
RX clock if there is no link, if this is the case, you will
|
|
see "TX disable timeout" or "RX disable timeout" in the system
|
|
log.
|
|
|
|
If unsure, say N.
|
|
|
|
config IBM_EMAC_DEBUG
|
|
bool "Debugging"
|
|
depends on IBM_EMAC
|
|
default n
|
|
|
|
config IBM_EMAC_ZMII
|
|
bool
|
|
depends on IBM_EMAC && (NP405H || NP405L || 44x)
|
|
default y
|
|
|
|
config IBM_EMAC_RGMII
|
|
bool
|
|
depends on IBM_EMAC && 440GX
|
|
default y
|
|
|
|
config IBM_EMAC_TAH
|
|
bool
|
|
depends on IBM_EMAC && 440GX
|
|
default y
|
|
|