833cc67c77
This is V2 of the smsc911x fifo byteswap patch. The smsc911x hardware supports both big and little and endian hardware configurations, and the linux smsc911x driver currently detects word order. For correct operation on big endian platforms lacking swapped byte lanes the following patch is needed. Only fifo data is swapped, register data does not require any swapping. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/***************************************************************************
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*
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* Copyright (C) 2004-2008 SMSC
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* Copyright (C) 2005-2008 ARM
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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***************************************************************************/
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#ifndef __LINUX_SMSC911X_H__
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#define __LINUX_SMSC911X_H__
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#include <linux/phy.h>
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/* platform_device configuration data, should be assigned to
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* the platform_device's dev.platform_data */
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struct smsc911x_platform_config {
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unsigned int irq_polarity;
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unsigned int irq_type;
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unsigned int flags;
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phy_interface_t phy_interface;
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};
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/* Constants for platform_device irq polarity configuration */
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#define SMSC911X_IRQ_POLARITY_ACTIVE_LOW 0
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#define SMSC911X_IRQ_POLARITY_ACTIVE_HIGH 1
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/* Constants for platform_device irq type configuration */
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#define SMSC911X_IRQ_TYPE_OPEN_DRAIN 0
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#define SMSC911X_IRQ_TYPE_PUSH_PULL 1
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/* Constants for flags */
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#define SMSC911X_USE_16BIT (BIT(0))
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#define SMSC911X_USE_32BIT (BIT(1))
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#define SMSC911X_FORCE_INTERNAL_PHY (BIT(2))
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#define SMSC911X_FORCE_EXTERNAL_PHY (BIT(3))
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#define SMSC911X_SAVE_MAC_ADDRESS (BIT(4))
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/*
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* SMSC911X_SWAP_FIFO:
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* Enables software byte swap for fifo data. Should only be used as a
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* "last resort" in the case of big endian mode on boards with incorrectly
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* routed data bus to older devices such as LAN9118. Newer devices such as
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* LAN9221 can handle this in hardware, there are registers to control
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* this swapping but the driver doesn't currently use them.
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*/
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#define SMSC911X_SWAP_FIFO (BIT(5))
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#endif /* __LINUX_SMSC911X_H__ */
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