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