aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/leon/patches/018-greth_compat_mode.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/leon/patches/018-greth_compat_mode.patch')
-rw-r--r--target/linux/leon/patches/018-greth_compat_mode.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/leon/patches/018-greth_compat_mode.patch b/target/linux/leon/patches/018-greth_compat_mode.patch
new file mode 100644
index 0000000000..4afe89eb07
--- /dev/null
+++ b/target/linux/leon/patches/018-greth_compat_mode.patch
@@ -0,0 +1,41 @@
+From a498d7076ee0f82ec3f508293a9cf1ccba15829e Mon Sep 17 00:00:00 2001
+From: Daniel Hellstrom <daniel@gaisler.com>
+Date: Wed, 1 Dec 2010 16:52:19 +0100
+Subject: [PATCH] GRETH: added greth_compat_mode module parameter
+
+The greth_compat_mode option can be used to set a GRETH GBit capable MAC
+in operate as if the GRETH 10/100 device was found. The GRETH GBit supports
+TCP/UDP checksum offloading, unaligned frame buffers, scatter gather etc.
+Enabling this mode allows the developer to test the GRETH 10/100 device
+without all features mentioned above on a GBit MAC capable of the above.
+
+Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
+---
+ drivers/net/greth.c | 9 +++++++++
+ 1 files changed, 9 insertions(+), 0 deletions(-)
+
+--- a/drivers/net/greth.c
++++ b/drivers/net/greth.c
+@@ -70,6 +70,11 @@ static int no_gbit = 0;
+ module_param(no_gbit, int, S_IRUGO);
+ MODULE_PARM_DESC(no_gbit, "GRETH report GBit not supported by MAC enable. Only affects GRETH GBit MAC, default 0 (off).");
+
++/* Use this option to enable GRETH 10/100 code on GRETH_GBIT hardware (debug legacy code option) */
++static int compat_mode = 0;
++module_param(compat_mode, int, S_IRUGO);
++MODULE_PARM_DESC(compat_mode, "GRETH 10/100 legacy mode enable. Only affects GRETH GBit MAC, default 0 (off).");
++
+ static int greth_open(struct net_device *dev);
+ static netdev_tx_t greth_start_xmit(struct sk_buff *skb,
+ struct net_device *dev);
+@@ -1452,6 +1457,10 @@ static int __devinit greth_of_probe(stru
+ else
+ greth->gbit_phy_support = 0;
+
++ /* Force GBit MAC in legacy 10/100 mode (no offloading etc.) */
++ if (compat_mode == 1)
++ greth->gbit_mac = 0;
++
+ /* Check for multicast capability */
+ greth->multicast = (tmp >> 25) & 1;
+