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authorGiuseppe CAVALLARO <peppe.cavallaro@st.com>2010-09-17 03:23:40 +0000
committerDavid S. Miller <davem@davemloft.net>2010-09-17 16:12:57 -0700
commitebbb293f8b3021ae2009fcb7cb3b8a52fb5fd06a (patch)
tree9ee381c887f2bc585c103a34b349d85fd95a2567 /include/linux
parentdfb8fb96ae2b5126cd0c08c0ccd7c42e1f46568a (diff)
downloadop-kernel-dev-ebbb293f8b3021ae2009fcb7cb3b8a52fb5fd06a.zip
op-kernel-dev-ebbb293f8b3021ae2009fcb7cb3b8a52fb5fd06a.tar.gz
stmmac: consolidate and tidy-up the COE support
The first version of the driver had hard-coded the logic for handling the checksum offloading. This was designed according to the chips included in the STM platforms where: o MAC10/100 supports no COE at all. o GMAC fully supports RX/TX COE. This is not good for other chip configurations where, for example, the mac10/100 supports the tx csum in HW or when the GMAC has no IPC. Thanks to Johannes Stezenbach; he provided me a first draft of this patch that only reviewed the IPC for the GMAC devices. This patch also helps on SPEAr platforms where the MAC10/100 can perform the TX csum in HW. Thanks to Deepak SIKRI for his support on this. In the end, GMAC devices for STM platforms have a bugged Jumbo frame support that needs to have the Tx COE disabled for oversized frames (due to limited buffer sizes). This information is also passed through the driver's platform structure. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Johannes Stezenbach <js@sig21.net> Signed-off-by: Deepak SIKRI <deepak.sikri@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/stmmac.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index c87c88c..1d8baf7 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -35,6 +35,8 @@ struct plat_stmmacenet_data {
int clk_csr;
int has_gmac;
int enh_desc;
+ int tx_coe;
+ int bugged_jumbo;
void (*fix_mac_speed)(void *priv, unsigned int speed);
void (*bus_setup)(void __iomem *ioaddr);
#ifdef CONFIG_STM_DRIVERS
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