Device tree aware EMAC driver
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>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 9dc4a80..cfa97f3 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1247,75 +1247,8 @@
<file:Documentation/networking/net-modules.txt>. The module will
be called ibmveth.
-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
+source "drivers/net/ibm_emac/Kconfig"
+source "drivers/net/ibm_newemac/Kconfig"
config NET_PCI
bool "EISA, VLB, PCI and on board controllers"