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author | David Gibson <david@gibson.dropbear.id.au> | 2007-08-23 05:56:01 +0200 |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-11 01:51:52 +0200 |
commit | 1d3bb996481e116f5f2b127cbd29b83365d2cf62 (patch) | |
tree | b612a1dbf51c920fb5a9758a6d35f9ed37eb927f /drivers/net/ibm_emac | |
parent | 8139cp: trivial endianness annotations (diff) | |
download | linux-1d3bb996481e116f5f2b127cbd29b83365d2cf62.tar.xz linux-1d3bb996481e116f5f2b127cbd29b83365d2cf62.zip |
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>
Diffstat (limited to 'drivers/net/ibm_emac')
-rw-r--r-- | drivers/net/ibm_emac/Kconfig | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/net/ibm_emac/Kconfig b/drivers/net/ibm_emac/Kconfig new file mode 100644 index 000000000000..f61c48047dc0 --- /dev/null +++ b/drivers/net/ibm_emac/Kconfig @@ -0,0 +1,70 @@ +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 + |