From 1d3bb996481e116f5f2b127cbd29b83365d2cf62 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 23 Aug 2007 13:56:01 +1000 Subject: 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 Signed-off-by: Jeff Garzik --- drivers/net/ibm_newemac/Kconfig | 63 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 drivers/net/ibm_newemac/Kconfig (limited to 'drivers/net/ibm_newemac/Kconfig') diff --git a/drivers/net/ibm_newemac/Kconfig b/drivers/net/ibm_newemac/Kconfig new file mode 100644 index 00000000000..0d3e7380bad --- /dev/null +++ b/drivers/net/ibm_newemac/Kconfig @@ -0,0 +1,63 @@ +config IBM_NEW_EMAC + tristate "IBM EMAC Ethernet support" + depends on PPC_DCR && PPC_MERGE + help + This driver supports the IBM EMAC family of Ethernet controllers + typically found on 4xx embedded PowerPC chips, but also on the + Axon southbridge for Cell. + +config IBM_NEW_EMAC_RXB + int "Number of receive buffers" + depends on IBM_NEW_EMAC + default "128" + +config IBM_NEW_EMAC_TXB + int "Number of transmit buffers" + depends on IBM_NEW_EMAC + default "64" + +config IBM_NEW_EMAC_POLL_WEIGHT + int "MAL NAPI polling weight" + depends on IBM_NEW_EMAC + default "32" + +config IBM_NEW_EMAC_RX_COPY_THRESHOLD + int "RX skb copy threshold (bytes)" + depends on IBM_NEW_EMAC + default "256" + +config IBM_NEW_EMAC_RX_SKB_HEADROOM + int "Additional RX skb headroom (bytes)" + depends on IBM_NEW_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_NEW_EMAC_DEBUG + bool "Debugging" + depends on IBM_NEW_EMAC + default n + +# The options below has to be select'ed by the respective +# processor types or platforms + +config IBM_NEW_EMAC_ZMII + bool + default n + +config IBM_NEW_EMAC_RGMII + bool + default n + +config IBM_NEW_EMAC_TAH + bool + default n + +config IBM_NEW_EMAC_EMAC4 + bool + default n -- cgit v1.2.3