2005-04-16 22:20:36 +00:00
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/* $Id: ethernet.c,v 1.31 2004/10/18 14:49:03 starvik Exp $
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*
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* e100net.c: A network driver for the ETRAX 100LX network controller.
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*
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* Copyright (c) 1998-2002 Axis Communications AB.
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*
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* The outline of this driver comes from skeleton.c.
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*
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* $Log: ethernet.c,v $
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* Revision 1.31 2004/10/18 14:49:03 starvik
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* Use RX interrupt as random source
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*
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* Revision 1.30 2004/09/29 10:44:04 starvik
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* Enabed MAC-address output again
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*
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* Revision 1.29 2004/08/24 07:14:05 starvik
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* Make use of generic MDIO interface and constants.
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*
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* Revision 1.28 2004/08/20 09:37:11 starvik
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* Added support for Intel LXT972A. Creds to Randy Scarborough.
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*
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* Revision 1.27 2004/08/16 12:37:22 starvik
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* Merge of Linux 2.6.8
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*
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* Revision 1.25 2004/06/21 10:29:57 starvik
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* Merge of Linux 2.6.7
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*
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* Revision 1.23 2004/06/09 05:29:22 starvik
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* Avoid any race where R_DMA_CH1_FIRST is NULL (may trigger cache bug).
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*
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* Revision 1.22 2004/05/14 07:58:03 starvik
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* Merge of changes from 2.4
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*
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* Revision 1.20 2004/03/11 11:38:40 starvik
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* Merge of Linux 2.6.4
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*
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* Revision 1.18 2003/12/03 13:45:46 starvik
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* Use hardware pad for short packets to prevent information leakage.
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*
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* Revision 1.17 2003/07/04 08:27:37 starvik
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* Merge of Linux 2.5.74
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*
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* Revision 1.16 2003/04/24 08:28:22 starvik
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* New LED behaviour: LED off when no link
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*
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* Revision 1.15 2003/04/09 05:20:47 starvik
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* Merge of Linux 2.5.67
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*
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* Revision 1.13 2003/03/06 16:11:01 henriken
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* Off by one error in group address register setting.
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*
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* Revision 1.12 2003/02/27 17:24:19 starvik
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* Corrected Rev to Revision
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*
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* Revision 1.11 2003/01/24 09:53:21 starvik
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* Oops. Initialize GA to 0, not to 1
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*
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* Revision 1.10 2003/01/24 09:50:55 starvik
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* Initialize GA_0 and GA_1 to 0 to avoid matching of unwanted packets
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*
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* Revision 1.9 2002/12/13 07:40:58 starvik
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* Added basic ethtool interface
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* Handled out of memory when allocating new buffers
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*
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* Revision 1.8 2002/12/11 13:13:57 starvik
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* Added arch/ to v10 specific includes
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* Added fix from Linux 2.4 in serial.c (flush_to_flip_buffer)
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*
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* Revision 1.7 2002/11/26 09:41:42 starvik
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* Added e100_set_config (standard interface to set media type)
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* Added protection against preemptive scheduling
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* Added standard MII ioctls
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*
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* Revision 1.6 2002/11/21 07:18:18 starvik
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* Timers must be initialized in 2.5.48
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*
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* Revision 1.5 2002/11/20 11:56:11 starvik
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* Merge of Linux 2.5.48
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*
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* Revision 1.4 2002/11/18 07:26:46 starvik
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* Linux 2.5 port of latest Linux 2.4 ethernet driver
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*
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* Revision 1.33 2002/10/02 20:16:17 hp
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* SETF, SETS: Use underscored IO_x_ macros rather than incorrect token concatenation
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*
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* Revision 1.32 2002/09/16 06:05:58 starvik
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* Align memory returned by dev_alloc_skb
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* Moved handling of sent packets to interrupt to avoid reference counting problem
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*
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* Revision 1.31 2002/09/10 13:28:23 larsv
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* Return -EINVAL for unknown ioctls to avoid confusing tools that tests
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* for supported functionality by issuing special ioctls, i.e. wireless
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* extensions.
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*
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* Revision 1.30 2002/05/07 18:50:08 johana
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* Correct spelling in comments.
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*
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* Revision 1.29 2002/05/06 05:38:49 starvik
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* Performance improvements:
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* Large packets are not copied (breakpoint set to 256 bytes)
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* The cache bug workaround is delayed until half of the receive list
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* has been used
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* Added transmit list
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* Transmit interrupts are only enabled when transmit queue is full
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*
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* Revision 1.28.2.1 2002/04/30 08:15:51 starvik
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* Performance improvements:
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* Large packets are not copied (breakpoint set to 256 bytes)
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* The cache bug workaround is delayed until half of the receive list
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* has been used.
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* Added transmit list
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* Transmit interrupts are only enabled when transmit queue is full
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*
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* Revision 1.28 2002/04/22 11:47:21 johana
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* Fix according to 2.4.19-pre7. time_after/time_before and
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* missing end of comment.
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* The patch has a typo for ethernet.c in e100_clear_network_leds(),
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* that is fixed here.
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*
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* Revision 1.27 2002/04/12 11:55:11 bjornw
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* Added TODO
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*
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* Revision 1.26 2002/03/15 17:11:02 bjornw
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* Use prepare_rx_descriptor after the CPU has touched the receiving descs
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*
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* Revision 1.25 2002/03/08 13:07:53 bjornw
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* Unnecessary spinlock removed
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*
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* Revision 1.24 2002/02/20 12:57:43 fredriks
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* Replaced MIN() with min().
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*
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* Revision 1.23 2002/02/20 10:58:14 fredriks
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* Strip the Ethernet checksum (4 bytes) before forwarding a frame to upper layers.
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*
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* Revision 1.22 2002/01/30 07:48:22 matsfg
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* Initiate R_NETWORK_TR_CTRL
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*
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* Revision 1.21 2001/11/23 11:54:49 starvik
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* Added IFF_PROMISC and IFF_ALLMULTI handling in set_multicast_list
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* Removed compiler warnings
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*
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* Revision 1.20 2001/11/12 19:26:00 pkj
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* * Corrected e100_negotiate() to not assign half to current_duplex when
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* it was supposed to compare them...
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* * Cleaned up failure handling in e100_open().
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* * Fixed compiler warnings.
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*
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* Revision 1.19 2001/11/09 07:43:09 starvik
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* Added full duplex support
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* Added ioctl to set speed and duplex
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* Clear LED timer only runs when LED is lit
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*
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* Revision 1.18 2001/10/03 14:40:43 jonashg
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* Update rx_bytes counter.
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*
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* Revision 1.17 2001/06/11 12:43:46 olof
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* Modified defines for network LED behavior
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*
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* Revision 1.16 2001/05/30 06:12:46 markusl
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* TxDesc.next should not be set to NULL
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*
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* Revision 1.15 2001/05/29 10:27:04 markusl
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* Updated after review remarks:
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* +Use IO_EXTRACT
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* +Handle underrun
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*
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* Revision 1.14 2001/05/29 09:20:14 jonashg
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* Use driver name on printk output so one can tell which driver that complains.
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*
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* Revision 1.13 2001/05/09 12:35:59 johana
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* Use DMA_NBR and IRQ_NBR defines from dma.h and irq.h
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*
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* Revision 1.12 2001/04/05 11:43:11 tobiasa
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* Check dev before panic.
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*
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* Revision 1.11 2001/04/04 11:21:05 markusl
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* Updated according to review remarks
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*
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* Revision 1.10 2001/03/26 16:03:06 bjornw
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* Needs linux/config.h
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*
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* Revision 1.9 2001/03/19 14:47:48 pkj
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* * Make sure there is always a pause after the network LEDs are
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* changed so they will not look constantly lit during heavy traffic.
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* * Always use HZ when setting times relative to jiffies.
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* * Use LED_NETWORK_SET() when setting the network LEDs.
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*
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* Revision 1.8 2001/02/27 13:52:48 bjornw
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* malloc.h -> slab.h
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*
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* Revision 1.7 2001/02/23 13:46:38 bjornw
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* Spellling check
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*
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* Revision 1.6 2001/01/26 15:21:04 starvik
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* Don't disable interrupts while reading MDIO registers (MDIO is slow)
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* Corrected promiscuous mode
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* Improved deallocation of IRQs ("ifconfig eth0 down" now works)
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*
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* Revision 1.5 2000/11/29 17:22:22 bjornw
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* Get rid of the udword types legacy stuff
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*
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* Revision 1.4 2000/11/22 16:36:09 bjornw
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* Please marketing by using the correct case when spelling Etrax.
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*
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* Revision 1.3 2000/11/21 16:43:04 bjornw
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* Minor short->int change
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*
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* Revision 1.2 2000/11/08 14:27:57 bjornw
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* 2.4 port
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*
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* Revision 1.1 2000/11/06 13:56:00 bjornw
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* Verbatim copy of the 1.24 version of e100net.c from elinux
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*
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* Revision 1.24 2000/10/04 15:55:23 bjornw
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* * Use virt_to_phys etc. for DMA addresses
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* * Removed bogus CHECKSUM_UNNECESSARY
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*
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*
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/ptrace.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/spinlock.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/if.h>
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#include <linux/mii.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/ethtool.h>
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#include <asm/arch/svinto.h>/* DMA and register descriptions */
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#include <asm/io.h> /* LED_* I/O functions */
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#include <asm/irq.h>
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#include <asm/dma.h>
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#include <asm/system.h>
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#include <asm/bitops.h>
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#include <asm/ethernet.h>
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#include <asm/cache.h>
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//#define ETHDEBUG
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#define D(x)
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/*
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* The name of the card. Is used for messages and in the requests for
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* io regions, irqs and dma channels
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*/
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static const char* cardname = "ETRAX 100LX built-in ethernet controller";
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/* A default ethernet address. Highlevel SW will set the real one later */
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static struct sockaddr default_mac = {
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0,
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{ 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 }
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};
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/* Information that need to be kept for each board. */
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struct net_local {
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struct net_device_stats stats;
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struct mii_if_info mii_if;
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/* Tx control lock. This protects the transmit buffer ring
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* state along with the "tx full" state of the driver. This
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* means all netif_queue flow control actions are protected
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* by this lock as well.
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*/
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spinlock_t lock;
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};
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typedef struct etrax_eth_descr
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{
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etrax_dma_descr descr;
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struct sk_buff* skb;
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} etrax_eth_descr;
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/* Some transceivers requires special handling */
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struct transceiver_ops
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{
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unsigned int oui;
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void (*check_speed)(struct net_device* dev);
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void (*check_duplex)(struct net_device* dev);
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};
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struct transceiver_ops* transceiver;
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/* Duplex settings */
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enum duplex
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{
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half,
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full,
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autoneg
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};
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/* Dma descriptors etc. */
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#define MAX_MEDIA_DATA_SIZE 1518
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|
|
|
|
#define MIN_PACKET_LEN 46
|
|
|
|
|
#define ETHER_HEAD_LEN 14
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
** MDIO constants.
|
|
|
|
|
*/
|
|
|
|
|
#define MDIO_START 0x1
|
|
|
|
|
#define MDIO_READ 0x2
|
|
|
|
|
#define MDIO_WRITE 0x1
|
|
|
|
|
#define MDIO_PREAMBLE 0xfffffffful
|
|
|
|
|
|
|
|
|
|
/* Broadcom specific */
|
|
|
|
|
#define MDIO_AUX_CTRL_STATUS_REG 0x18
|
|
|
|
|
#define MDIO_BC_FULL_DUPLEX_IND 0x1
|
|
|
|
|
#define MDIO_BC_SPEED 0x2
|
|
|
|
|
|
|
|
|
|
/* TDK specific */
|
|
|
|
|
#define MDIO_TDK_DIAGNOSTIC_REG 18
|
|
|
|
|
#define MDIO_TDK_DIAGNOSTIC_RATE 0x400
|
|
|
|
|
#define MDIO_TDK_DIAGNOSTIC_DPLX 0x800
|
|
|
|
|
|
|
|
|
|
/*Intel LXT972A specific*/
|
|
|
|
|
#define MDIO_INT_STATUS_REG_2 0x0011
|
|
|
|
|
#define MDIO_INT_FULL_DUPLEX_IND ( 1 << 9 )
|
|
|
|
|
#define MDIO_INT_SPEED ( 1 << 14 )
|
|
|
|
|
|
|
|
|
|
/* Network flash constants */
|
|
|
|
|
#define NET_FLASH_TIME (HZ/50) /* 20 ms */
|
|
|
|
|
#define NET_FLASH_PAUSE (HZ/100) /* 10 ms */
|
|
|
|
|
#define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */
|
|
|
|
|
#define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */
|
|
|
|
|
|
|
|
|
|
#define NO_NETWORK_ACTIVITY 0
|
|
|
|
|
#define NETWORK_ACTIVITY 1
|
|
|
|
|
|
|
|
|
|
#define NBR_OF_RX_DESC 64
|
|
|
|
|
#define NBR_OF_TX_DESC 256
|
|
|
|
|
|
|
|
|
|
/* Large packets are sent directly to upper layers while small packets are */
|
|
|
|
|
/* copied (to reduce memory waste). The following constant decides the breakpoint */
|
|
|
|
|
#define RX_COPYBREAK 256
|
|
|
|
|
|
|
|
|
|
/* Due to a chip bug we need to flush the cache when descriptors are returned */
|
|
|
|
|
/* to the DMA. To decrease performance impact we return descriptors in chunks. */
|
|
|
|
|
/* The following constant determines the number of descriptors to return. */
|
|
|
|
|
#define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2
|
|
|
|
|
|
|
|
|
|
#define GET_BIT(bit,val) (((val) >> (bit)) & 0x01)
|
|
|
|
|
|
|
|
|
|
/* Define some macros to access ETRAX 100 registers */
|
|
|
|
|
#define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
|
|
|
|
|
IO_FIELD_(reg##_, field##_, val)
|
|
|
|
|
#define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
|
|
|
|
|
IO_STATE_(reg##_, field##_, _##val)
|
|
|
|
|
|
|
|
|
|
static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to
|
|
|
|
|
to be processed */
|
|
|
|
|
static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */
|
|
|
|
|
static etrax_eth_descr *myPrevRxDesc; /* The descriptor right before myNextRxDesc */
|
|
|
|
|
|
|
|
|
|
static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32)));
|
|
|
|
|
|
|
|
|
|
static etrax_eth_descr* myFirstTxDesc; /* First packet not yet sent */
|
|
|
|
|
static etrax_eth_descr* myLastTxDesc; /* End of send queue */
|
|
|
|
|
static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */
|
|
|
|
|
static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32)));
|
|
|
|
|
|
|
|
|
|
static unsigned int network_rec_config_shadow = 0;
|
|
|
|
|
static unsigned int mdio_phy_addr; /* Transciever address */
|
|
|
|
|
|
|
|
|
|
static unsigned int network_tr_ctrl_shadow = 0;
|
|
|
|
|
|
|
|
|
|
/* Network speed indication. */
|
2005-09-09 20:10:40 +00:00
|
|
|
static DEFINE_TIMER(speed_timer, NULL, 0, 0);
|
|
|
|
|
static DEFINE_TIMER(clear_led_timer, NULL, 0, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
static int current_speed; /* Speed read from transceiver */
|
|
|
|
|
static int current_speed_selection; /* Speed selected by user */
|
|
|
|
|
static unsigned long led_next_time;
|
|
|
|
|
static int led_active;
|
|
|
|
|
static int rx_queue_len;
|
|
|
|
|
|
|
|
|
|
/* Duplex */
|
2005-09-09 20:10:40 +00:00
|
|
|
static DEFINE_TIMER(duplex_timer, NULL, 0, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
static int full_duplex;
|
|
|
|
|
static enum duplex current_duplex;
|
|
|
|
|
|
|
|
|
|
/* Index to functions, as function prototypes. */
|
|
|
|
|
|
|
|
|
|
static int etrax_ethernet_init(void);
|
|
|
|
|
|
|
|
|
|
static int e100_open(struct net_device *dev);
|
|
|
|
|
static int e100_set_mac_address(struct net_device *dev, void *addr);
|
|
|
|
|
static int e100_send_packet(struct sk_buff *skb, struct net_device *dev);
|
|
|
|
|
static irqreturn_t e100rxtx_interrupt(int irq, void *dev_id, struct pt_regs *regs);
|
|
|
|
|
static irqreturn_t e100nw_interrupt(int irq, void *dev_id, struct pt_regs *regs);
|
|
|
|
|
static void e100_rx(struct net_device *dev);
|
|
|
|
|
static int e100_close(struct net_device *dev);
|
|
|
|
|
static int e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
|
|
|
|
|
static int e100_ethtool_ioctl(struct net_device* dev, struct ifreq *ifr);
|
|
|
|
|
static int e100_set_config(struct net_device* dev, struct ifmap* map);
|
|
|
|
|
static void e100_tx_timeout(struct net_device *dev);
|
|
|
|
|
static struct net_device_stats *e100_get_stats(struct net_device *dev);
|
|
|
|
|
static void set_multicast_list(struct net_device *dev);
|
|
|
|
|
static void e100_hardware_send_packet(char *buf, int length);
|
|
|
|
|
static void update_rx_stats(struct net_device_stats *);
|
|
|
|
|
static void update_tx_stats(struct net_device_stats *);
|
|
|
|
|
static int e100_probe_transceiver(struct net_device* dev);
|
|
|
|
|
|
|
|
|
|
static void e100_check_speed(unsigned long priv);
|
|
|
|
|
static void e100_set_speed(struct net_device* dev, unsigned long speed);
|
|
|
|
|
static void e100_check_duplex(unsigned long priv);
|
|
|
|
|
static void e100_set_duplex(struct net_device* dev, enum duplex);
|
|
|
|
|
static void e100_negotiate(struct net_device* dev);
|
|
|
|
|
|
|
|
|
|
static int e100_get_mdio_reg(struct net_device *dev, int phy_id, int location);
|
|
|
|
|
static void e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value);
|
|
|
|
|
|
|
|
|
|
static void e100_send_mdio_cmd(unsigned short cmd, int write_cmd);
|
|
|
|
|
static void e100_send_mdio_bit(unsigned char bit);
|
|
|
|
|
static unsigned char e100_receive_mdio_bit(void);
|
|
|
|
|
static void e100_reset_transceiver(struct net_device* net);
|
|
|
|
|
|
|
|
|
|
static void e100_clear_network_leds(unsigned long dummy);
|
|
|
|
|
static void e100_set_network_leds(int active);
|
|
|
|
|
|
|
|
|
|
static void broadcom_check_speed(struct net_device* dev);
|
|
|
|
|
static void broadcom_check_duplex(struct net_device* dev);
|
|
|
|
|
static void tdk_check_speed(struct net_device* dev);
|
|
|
|
|
static void tdk_check_duplex(struct net_device* dev);
|
|
|
|
|
static void intel_check_speed(struct net_device* dev);
|
|
|
|
|
static void intel_check_duplex(struct net_device* dev);
|
|
|
|
|
static void generic_check_speed(struct net_device* dev);
|
|
|
|
|
static void generic_check_duplex(struct net_device* dev);
|
|
|
|
|
|
|
|
|
|
struct transceiver_ops transceivers[] =
|
|
|
|
|
{
|
|
|
|
|
{0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */
|
|
|
|
|
{0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */
|
|
|
|
|
{0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */
|
|
|
|
|
{0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/
|
|
|
|
|
{0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define tx_done(dev) (*R_DMA_CH0_CMD == 0)
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Check for a network adaptor of this type, and return '0' if one exists.
|
|
|
|
|
* If dev->base_addr == 0, probe all likely locations.
|
|
|
|
|
* If dev->base_addr == 1, always return failure.
|
|
|
|
|
* If dev->base_addr == 2, allocate space for the device and return success
|
|
|
|
|
* (detachable devices only).
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int __init
|
|
|
|
|
etrax_ethernet_init(void)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev;
|
|
|
|
|
struct net_local* np;
|
|
|
|
|
int i, err;
|
|
|
|
|
|
|
|
|
|
printk(KERN_INFO
|
|
|
|
|
"ETRAX 100LX 10/100MBit ethernet v2.0 (c) 2000-2003 Axis Communications AB\n");
|
|
|
|
|
|
|
|
|
|
dev = alloc_etherdev(sizeof(struct net_local));
|
|
|
|
|
np = dev->priv;
|
|
|
|
|
|
|
|
|
|
if (!dev)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */
|
|
|
|
|
|
|
|
|
|
/* now setup our etrax specific stuff */
|
|
|
|
|
|
|
|
|
|
dev->irq = NETWORK_DMA_RX_IRQ_NBR; /* we really use DMATX as well... */
|
|
|
|
|
dev->dma = NETWORK_RX_DMA_NBR;
|
|
|
|
|
|
|
|
|
|
/* fill in our handlers so the network layer can talk to us in the future */
|
|
|
|
|
|
|
|
|
|
dev->open = e100_open;
|
|
|
|
|
dev->hard_start_xmit = e100_send_packet;
|
|
|
|
|
dev->stop = e100_close;
|
|
|
|
|
dev->get_stats = e100_get_stats;
|
|
|
|
|
dev->set_multicast_list = set_multicast_list;
|
|
|
|
|
dev->set_mac_address = e100_set_mac_address;
|
|
|
|
|
dev->do_ioctl = e100_ioctl;
|
|
|
|
|
dev->set_config = e100_set_config;
|
|
|
|
|
dev->tx_timeout = e100_tx_timeout;
|
|
|
|
|
|
|
|
|
|
/* Initialise the list of Etrax DMA-descriptors */
|
|
|
|
|
|
|
|
|
|
/* Initialise receive descriptors */
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < NBR_OF_RX_DESC; i++) {
|
|
|
|
|
/* Allocate two extra cachelines to make sure that buffer used by DMA
|
|
|
|
|
* does not share cacheline with any other data (to avoid cache bug)
|
|
|
|
|
*/
|
|
|
|
|
RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES);
|
|
|
|
|
RxDescList[i].descr.ctrl = 0;
|
|
|
|
|
RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE;
|
|
|
|
|
RxDescList[i].descr.next = virt_to_phys(&RxDescList[i + 1]);
|
|
|
|
|
RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data));
|
|
|
|
|
RxDescList[i].descr.status = 0;
|
|
|
|
|
RxDescList[i].descr.hw_len = 0;
|
|
|
|
|
prepare_rx_descriptor(&RxDescList[i].descr);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
RxDescList[NBR_OF_RX_DESC - 1].descr.ctrl = d_eol;
|
|
|
|
|
RxDescList[NBR_OF_RX_DESC - 1].descr.next = virt_to_phys(&RxDescList[0]);
|
|
|
|
|
rx_queue_len = 0;
|
|
|
|
|
|
|
|
|
|
/* Initialize transmit descriptors */
|
|
|
|
|
for (i = 0; i < NBR_OF_TX_DESC; i++) {
|
|
|
|
|
TxDescList[i].descr.ctrl = 0;
|
|
|
|
|
TxDescList[i].descr.sw_len = 0;
|
|
|
|
|
TxDescList[i].descr.next = virt_to_phys(&TxDescList[i + 1].descr);
|
|
|
|
|
TxDescList[i].descr.buf = 0;
|
|
|
|
|
TxDescList[i].descr.status = 0;
|
|
|
|
|
TxDescList[i].descr.hw_len = 0;
|
|
|
|
|
TxDescList[i].skb = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TxDescList[NBR_OF_TX_DESC - 1].descr.ctrl = d_eol;
|
|
|
|
|
TxDescList[NBR_OF_TX_DESC - 1].descr.next = virt_to_phys(&TxDescList[0].descr);
|
|
|
|
|
|
|
|
|
|
/* Initialise initial pointers */
|
|
|
|
|
|
|
|
|
|
myNextRxDesc = &RxDescList[0];
|
|
|
|
|
myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
|
|
|
|
|
myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
|
|
|
|
|
myFirstTxDesc = &TxDescList[0];
|
|
|
|
|
myNextTxDesc = &TxDescList[0];
|
|
|
|
|
myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1];
|
|
|
|
|
|
|
|
|
|
/* Register device */
|
|
|
|
|
err = register_netdev(dev);
|
|
|
|
|
if (err) {
|
|
|
|
|
free_netdev(dev);
|
|
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* set the default MAC address */
|
|
|
|
|
|
|
|
|
|
e100_set_mac_address(dev, &default_mac);
|
|
|
|
|
|
|
|
|
|
/* Initialize speed indicator stuff. */
|
|
|
|
|
|
|
|
|
|
current_speed = 10;
|
|
|
|
|
current_speed_selection = 0; /* Auto */
|
|
|
|
|
speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL;
|
|
|
|
|
duplex_timer.data = (unsigned long)dev;
|
|
|
|
|
speed_timer.function = e100_check_speed;
|
|
|
|
|
|
|
|
|
|
clear_led_timer.function = e100_clear_network_leds;
|
|
|
|
|
|
|
|
|
|
full_duplex = 0;
|
|
|
|
|
current_duplex = autoneg;
|
|
|
|
|
duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL;
|
|
|
|
|
duplex_timer.data = (unsigned long)dev;
|
|
|
|
|
duplex_timer.function = e100_check_duplex;
|
|
|
|
|
|
|
|
|
|
/* Initialize mii interface */
|
|
|
|
|
np->mii_if.phy_id = mdio_phy_addr;
|
|
|
|
|
np->mii_if.phy_id_mask = 0x1f;
|
|
|
|
|
np->mii_if.reg_num_mask = 0x1f;
|
|
|
|
|
np->mii_if.dev = dev;
|
|
|
|
|
np->mii_if.mdio_read = e100_get_mdio_reg;
|
|
|
|
|
np->mii_if.mdio_write = e100_set_mdio_reg;
|
|
|
|
|
|
|
|
|
|
/* Initialize group address registers to make sure that no */
|
|
|
|
|
/* unwanted addresses are matched */
|
|
|
|
|
*R_NETWORK_GA_0 = 0x00000000;
|
|
|
|
|
*R_NETWORK_GA_1 = 0x00000000;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* set MAC address of the interface. called from the core after a
|
|
|
|
|
* SIOCSIFADDR ioctl, and from the bootup above.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_set_mac_address(struct net_device *dev, void *p)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
struct sockaddr *addr = p;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
spin_lock(&np->lock); /* preemption protection */
|
|
|
|
|
|
|
|
|
|
/* remember it */
|
|
|
|
|
|
|
|
|
|
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
|
|
|
|
|
|
|
|
|
|
/* Write it to the hardware.
|
|
|
|
|
* Note the way the address is wrapped:
|
|
|
|
|
* *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24);
|
|
|
|
|
* *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8);
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
*R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) |
|
|
|
|
|
(dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24);
|
|
|
|
|
*R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8);
|
|
|
|
|
*R_NETWORK_SA_2 = 0;
|
|
|
|
|
|
|
|
|
|
/* show it in the log as well */
|
|
|
|
|
|
|
|
|
|
printk(KERN_INFO "%s: changed MAC to ", dev->name);
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < 5; i++)
|
|
|
|
|
printk("%02X:", dev->dev_addr[i]);
|
|
|
|
|
|
|
|
|
|
printk("%02X\n", dev->dev_addr[i]);
|
|
|
|
|
|
|
|
|
|
spin_unlock(&np->lock);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Open/initialize the board. This is called (in the current kernel)
|
|
|
|
|
* sometime after booting when the 'ifconfig' program is run.
|
|
|
|
|
*
|
|
|
|
|
* This routine should set everything up anew at each open, even
|
|
|
|
|
* registers that "should" only need to be set once at boot, so that
|
|
|
|
|
* there is non-reboot way to recover if something goes wrong.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_open(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
|
|
/* enable the MDIO output pin */
|
|
|
|
|
|
|
|
|
|
*R_NETWORK_MGM_CTRL = IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable);
|
|
|
|
|
|
|
|
|
|
*R_IRQ_MASK0_CLR =
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr);
|
|
|
|
|
|
|
|
|
|
/* clear dma0 and 1 eop and descr irq masks */
|
|
|
|
|
*R_IRQ_MASK2_CLR =
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr);
|
|
|
|
|
|
|
|
|
|
/* Reset and wait for the DMA channels */
|
|
|
|
|
|
|
|
|
|
RESET_DMA(NETWORK_TX_DMA_NBR);
|
|
|
|
|
RESET_DMA(NETWORK_RX_DMA_NBR);
|
|
|
|
|
WAIT_DMA(NETWORK_TX_DMA_NBR);
|
|
|
|
|
WAIT_DMA(NETWORK_RX_DMA_NBR);
|
|
|
|
|
|
|
|
|
|
/* Initialise the etrax network controller */
|
|
|
|
|
|
|
|
|
|
/* allocate the irq corresponding to the receiving DMA */
|
|
|
|
|
|
|
|
|
|
if (request_irq(NETWORK_DMA_RX_IRQ_NBR, e100rxtx_interrupt,
|
|
|
|
|
SA_SAMPLE_RANDOM, cardname, (void *)dev)) {
|
|
|
|
|
goto grace_exit0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* allocate the irq corresponding to the transmitting DMA */
|
|
|
|
|
|
|
|
|
|
if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_interrupt, 0,
|
|
|
|
|
cardname, (void *)dev)) {
|
|
|
|
|
goto grace_exit1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* allocate the irq corresponding to the network errors etc */
|
|
|
|
|
|
|
|
|
|
if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0,
|
|
|
|
|
cardname, (void *)dev)) {
|
|
|
|
|
goto grace_exit2;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* give the HW an idea of what MAC address we want */
|
|
|
|
|
|
|
|
|
|
*R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) |
|
|
|
|
|
(dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24);
|
|
|
|
|
*R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8);
|
|
|
|
|
*R_NETWORK_SA_2 = 0;
|
|
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
/* use promiscuous mode for testing */
|
|
|
|
|
*R_NETWORK_GA_0 = 0xffffffff;
|
|
|
|
|
*R_NETWORK_GA_1 = 0xffffffff;
|
|
|
|
|
|
|
|
|
|
*R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */
|
|
|
|
|
#else
|
|
|
|
|
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive);
|
|
|
|
|
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable);
|
|
|
|
|
SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex);
|
|
|
|
|
*R_NETWORK_REC_CONFIG = network_rec_config_shadow;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
*R_NETWORK_GEN_CONFIG =
|
|
|
|
|
IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) |
|
|
|
|
|
IO_STATE(R_NETWORK_GEN_CONFIG, enable, on);
|
|
|
|
|
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr);
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, delay, none);
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cancel, dont);
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cd, enable);
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, retry, enable);
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, pad, enable);
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable);
|
|
|
|
|
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
|
|
|
|
|
|
|
|
|
|
save_flags(flags);
|
|
|
|
|
cli();
|
|
|
|
|
|
|
|
|
|
/* enable the irq's for ethernet DMA */
|
|
|
|
|
|
|
|
|
|
*R_IRQ_MASK2_SET =
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set);
|
|
|
|
|
|
|
|
|
|
*R_IRQ_MASK0_SET =
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_SET, overrun, set) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_SET, underrun, set) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_SET, excessive_col, set);
|
|
|
|
|
|
|
|
|
|
/* make sure the irqs are cleared */
|
|
|
|
|
|
|
|
|
|
*R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do);
|
|
|
|
|
*R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do);
|
|
|
|
|
|
|
|
|
|
/* make sure the rec and transmit error counters are cleared */
|
|
|
|
|
|
|
|
|
|
(void)*R_REC_COUNTERS; /* dummy read */
|
|
|
|
|
(void)*R_TR_COUNTERS; /* dummy read */
|
|
|
|
|
|
|
|
|
|
/* start the receiving DMA channel so we can receive packets from now on */
|
|
|
|
|
|
|
|
|
|
*R_DMA_CH1_FIRST = virt_to_phys(myNextRxDesc);
|
|
|
|
|
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start);
|
|
|
|
|
|
|
|
|
|
/* Set up transmit DMA channel so it can be restarted later */
|
|
|
|
|
|
|
|
|
|
*R_DMA_CH0_FIRST = 0;
|
|
|
|
|
*R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc);
|
|
|
|
|
|
|
|
|
|
restore_flags(flags);
|
|
|
|
|
|
|
|
|
|
/* Probe for transceiver */
|
|
|
|
|
if (e100_probe_transceiver(dev))
|
|
|
|
|
goto grace_exit3;
|
|
|
|
|
|
|
|
|
|
/* Start duplex/speed timers */
|
|
|
|
|
add_timer(&speed_timer);
|
|
|
|
|
add_timer(&duplex_timer);
|
|
|
|
|
|
|
|
|
|
/* We are now ready to accept transmit requeusts from
|
|
|
|
|
* the queueing layer of the networking.
|
|
|
|
|
*/
|
|
|
|
|
netif_start_queue(dev);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
grace_exit3:
|
|
|
|
|
free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev);
|
|
|
|
|
grace_exit2:
|
|
|
|
|
free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev);
|
|
|
|
|
grace_exit1:
|
|
|
|
|
free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev);
|
|
|
|
|
grace_exit0:
|
|
|
|
|
return -EAGAIN;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
generic_check_speed(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE);
|
|
|
|
|
if ((data & ADVERTISE_100FULL) ||
|
|
|
|
|
(data & ADVERTISE_100HALF))
|
|
|
|
|
current_speed = 100;
|
|
|
|
|
else
|
|
|
|
|
current_speed = 10;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
tdk_check_speed(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG);
|
|
|
|
|
current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
broadcom_check_speed(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG);
|
|
|
|
|
current_speed = (data & MDIO_BC_SPEED ? 100 : 10);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
intel_check_speed(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2);
|
|
|
|
|
current_speed = (data & MDIO_INT_SPEED ? 100 : 10);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_check_speed(unsigned long priv)
|
|
|
|
|
{
|
|
|
|
|
struct net_device* dev = (struct net_device*)priv;
|
|
|
|
|
static int led_initiated = 0;
|
|
|
|
|
unsigned long data;
|
|
|
|
|
int old_speed = current_speed;
|
|
|
|
|
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR);
|
|
|
|
|
if (!(data & BMSR_LSTATUS)) {
|
|
|
|
|
current_speed = 0;
|
|
|
|
|
} else {
|
|
|
|
|
transceiver->check_speed(dev);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((old_speed != current_speed) || !led_initiated) {
|
|
|
|
|
led_initiated = 1;
|
|
|
|
|
e100_set_network_leds(NO_NETWORK_ACTIVITY);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Reinitialize the timer. */
|
|
|
|
|
speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL;
|
|
|
|
|
add_timer(&speed_timer);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_negotiate(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned short data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE);
|
|
|
|
|
|
|
|
|
|
/* Discard old speed and duplex settings */
|
|
|
|
|
data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL |
|
|
|
|
|
ADVERTISE_10HALF | ADVERTISE_10FULL);
|
|
|
|
|
|
|
|
|
|
switch (current_speed_selection) {
|
|
|
|
|
case 10 :
|
|
|
|
|
if (current_duplex == full)
|
|
|
|
|
data |= ADVERTISE_10FULL;
|
|
|
|
|
else if (current_duplex == half)
|
|
|
|
|
data |= ADVERTISE_10HALF;
|
|
|
|
|
else
|
|
|
|
|
data |= ADVERTISE_10HALF | ADVERTISE_10FULL;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 100 :
|
|
|
|
|
if (current_duplex == full)
|
|
|
|
|
data |= ADVERTISE_100FULL;
|
|
|
|
|
else if (current_duplex == half)
|
|
|
|
|
data |= ADVERTISE_100HALF;
|
|
|
|
|
else
|
|
|
|
|
data |= ADVERTISE_100HALF | ADVERTISE_100FULL;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 0 : /* Auto */
|
|
|
|
|
if (current_duplex == full)
|
|
|
|
|
data |= ADVERTISE_100FULL | ADVERTISE_10FULL;
|
|
|
|
|
else if (current_duplex == half)
|
|
|
|
|
data |= ADVERTISE_100HALF | ADVERTISE_10HALF;
|
|
|
|
|
else
|
|
|
|
|
data |= ADVERTISE_10HALF | ADVERTISE_10FULL |
|
|
|
|
|
ADVERTISE_100HALF | ADVERTISE_100FULL;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default : /* assume autoneg speed and duplex */
|
|
|
|
|
data |= ADVERTISE_10HALF | ADVERTISE_10FULL |
|
|
|
|
|
ADVERTISE_100HALF | ADVERTISE_100FULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
e100_set_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE, data);
|
|
|
|
|
|
|
|
|
|
/* Renegotiate with link partner */
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR);
|
|
|
|
|
data |= BMCR_ANENABLE | BMCR_ANRESTART;
|
|
|
|
|
|
|
|
|
|
e100_set_mdio_reg(dev, mdio_phy_addr, MII_BMCR, data);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_set_speed(struct net_device* dev, unsigned long speed)
|
|
|
|
|
{
|
|
|
|
|
if (speed != current_speed_selection) {
|
|
|
|
|
current_speed_selection = speed;
|
|
|
|
|
e100_negotiate(dev);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_check_duplex(unsigned long priv)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev = (struct net_device *)priv;
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
int old_duplex = full_duplex;
|
|
|
|
|
transceiver->check_duplex(dev);
|
|
|
|
|
if (old_duplex != full_duplex) {
|
|
|
|
|
/* Duplex changed */
|
|
|
|
|
SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex);
|
|
|
|
|
*R_NETWORK_REC_CONFIG = network_rec_config_shadow;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Reinitialize the timer. */
|
|
|
|
|
duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL;
|
|
|
|
|
add_timer(&duplex_timer);
|
|
|
|
|
np->mii_if.full_duplex = full_duplex;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
generic_check_duplex(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_ADVERTISE);
|
|
|
|
|
if ((data & ADVERTISE_10FULL) ||
|
|
|
|
|
(data & ADVERTISE_100FULL))
|
|
|
|
|
full_duplex = 1;
|
|
|
|
|
else
|
|
|
|
|
full_duplex = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
tdk_check_duplex(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_TDK_DIAGNOSTIC_REG);
|
|
|
|
|
full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
broadcom_check_duplex(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_AUX_CTRL_STATUS_REG);
|
|
|
|
|
full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
intel_check_duplex(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned long data;
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MDIO_INT_STATUS_REG_2);
|
|
|
|
|
full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_set_duplex(struct net_device* dev, enum duplex new_duplex)
|
|
|
|
|
{
|
|
|
|
|
if (new_duplex != current_duplex) {
|
|
|
|
|
current_duplex = new_duplex;
|
|
|
|
|
e100_negotiate(dev);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_probe_transceiver(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned int phyid_high;
|
|
|
|
|
unsigned int phyid_low;
|
|
|
|
|
unsigned int oui;
|
|
|
|
|
struct transceiver_ops* ops = NULL;
|
|
|
|
|
|
|
|
|
|
/* Probe MDIO physical address */
|
|
|
|
|
for (mdio_phy_addr = 0; mdio_phy_addr <= 31; mdio_phy_addr++) {
|
|
|
|
|
if (e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMSR) != 0xffff)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (mdio_phy_addr == 32)
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
|
|
/* Get manufacturer */
|
|
|
|
|
phyid_high = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID1);
|
|
|
|
|
phyid_low = e100_get_mdio_reg(dev, mdio_phy_addr, MII_PHYSID2);
|
|
|
|
|
oui = (phyid_high << 6) | (phyid_low >> 10);
|
|
|
|
|
|
|
|
|
|
for (ops = &transceivers[0]; ops->oui; ops++) {
|
|
|
|
|
if (ops->oui == oui)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
transceiver = ops;
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_get_mdio_reg(struct net_device *dev, int phy_id, int location)
|
|
|
|
|
{
|
|
|
|
|
unsigned short cmd; /* Data to be sent on MDIO port */
|
|
|
|
|
int data; /* Data read from MDIO */
|
|
|
|
|
int bitCounter;
|
|
|
|
|
|
|
|
|
|
/* Start of frame, OP Code, Physical Address, Register Address */
|
|
|
|
|
cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (phy_id << 7) |
|
|
|
|
|
(location << 2);
|
|
|
|
|
|
|
|
|
|
e100_send_mdio_cmd(cmd, 0);
|
|
|
|
|
|
|
|
|
|
data = 0;
|
|
|
|
|
|
|
|
|
|
/* Data... */
|
|
|
|
|
for (bitCounter=15; bitCounter>=0 ; bitCounter--) {
|
|
|
|
|
data |= (e100_receive_mdio_bit() << bitCounter);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return data;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value)
|
|
|
|
|
{
|
|
|
|
|
int bitCounter;
|
|
|
|
|
unsigned short cmd;
|
|
|
|
|
|
|
|
|
|
cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (phy_id << 7) |
|
|
|
|
|
(location << 2);
|
|
|
|
|
|
|
|
|
|
e100_send_mdio_cmd(cmd, 1);
|
|
|
|
|
|
|
|
|
|
/* Data... */
|
|
|
|
|
for (bitCounter=15; bitCounter>=0 ; bitCounter--) {
|
|
|
|
|
e100_send_mdio_bit(GET_BIT(bitCounter, value));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_send_mdio_cmd(unsigned short cmd, int write_cmd)
|
|
|
|
|
{
|
|
|
|
|
int bitCounter;
|
|
|
|
|
unsigned char data = 0x2;
|
|
|
|
|
|
|
|
|
|
/* Preamble */
|
|
|
|
|
for (bitCounter = 31; bitCounter>= 0; bitCounter--)
|
|
|
|
|
e100_send_mdio_bit(GET_BIT(bitCounter, MDIO_PREAMBLE));
|
|
|
|
|
|
|
|
|
|
for (bitCounter = 15; bitCounter >= 2; bitCounter--)
|
|
|
|
|
e100_send_mdio_bit(GET_BIT(bitCounter, cmd));
|
|
|
|
|
|
|
|
|
|
/* Turnaround */
|
|
|
|
|
for (bitCounter = 1; bitCounter >= 0 ; bitCounter--)
|
|
|
|
|
if (write_cmd)
|
|
|
|
|
e100_send_mdio_bit(GET_BIT(bitCounter, data));
|
|
|
|
|
else
|
|
|
|
|
e100_receive_mdio_bit();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_send_mdio_bit(unsigned char bit)
|
|
|
|
|
{
|
|
|
|
|
*R_NETWORK_MGM_CTRL =
|
|
|
|
|
IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) |
|
|
|
|
|
IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit);
|
|
|
|
|
udelay(1);
|
|
|
|
|
*R_NETWORK_MGM_CTRL =
|
|
|
|
|
IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) |
|
|
|
|
|
IO_MASK(R_NETWORK_MGM_CTRL, mdck) |
|
|
|
|
|
IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit);
|
|
|
|
|
udelay(1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static unsigned char
|
|
|
|
|
e100_receive_mdio_bit()
|
|
|
|
|
{
|
|
|
|
|
unsigned char bit;
|
|
|
|
|
*R_NETWORK_MGM_CTRL = 0;
|
|
|
|
|
bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT);
|
|
|
|
|
udelay(1);
|
|
|
|
|
*R_NETWORK_MGM_CTRL = IO_MASK(R_NETWORK_MGM_CTRL, mdck);
|
|
|
|
|
udelay(1);
|
|
|
|
|
return bit;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_reset_transceiver(struct net_device* dev)
|
|
|
|
|
{
|
|
|
|
|
unsigned short cmd;
|
|
|
|
|
unsigned short data;
|
|
|
|
|
int bitCounter;
|
|
|
|
|
|
|
|
|
|
data = e100_get_mdio_reg(dev, mdio_phy_addr, MII_BMCR);
|
|
|
|
|
|
|
|
|
|
cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (mdio_phy_addr << 7) | (MII_BMCR << 2);
|
|
|
|
|
|
|
|
|
|
e100_send_mdio_cmd(cmd, 1);
|
|
|
|
|
|
|
|
|
|
data |= 0x8000;
|
|
|
|
|
|
|
|
|
|
for (bitCounter = 15; bitCounter >= 0 ; bitCounter--) {
|
|
|
|
|
e100_send_mdio_bit(GET_BIT(bitCounter, data));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Called by upper layers if they decide it took too long to complete
|
|
|
|
|
* sending a packet - we need to reset and stuff.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_tx_timeout(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
|
|
spin_lock_irqsave(&np->lock, flags);
|
|
|
|
|
|
|
|
|
|
printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name,
|
|
|
|
|
tx_done(dev) ? "IRQ problem" : "network cable problem");
|
|
|
|
|
|
|
|
|
|
/* remember we got an error */
|
|
|
|
|
|
|
|
|
|
np->stats.tx_errors++;
|
|
|
|
|
|
|
|
|
|
/* reset the TX DMA in case it has hung on something */
|
|
|
|
|
|
|
|
|
|
RESET_DMA(NETWORK_TX_DMA_NBR);
|
|
|
|
|
WAIT_DMA(NETWORK_TX_DMA_NBR);
|
|
|
|
|
|
|
|
|
|
/* Reset the transceiver. */
|
|
|
|
|
|
|
|
|
|
e100_reset_transceiver(dev);
|
|
|
|
|
|
|
|
|
|
/* and get rid of the packets that never got an interrupt */
|
|
|
|
|
while (myFirstTxDesc != myNextTxDesc)
|
|
|
|
|
{
|
|
|
|
|
dev_kfree_skb(myFirstTxDesc->skb);
|
|
|
|
|
myFirstTxDesc->skb = 0;
|
|
|
|
|
myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Set up transmit DMA channel so it can be restarted later */
|
|
|
|
|
*R_DMA_CH0_FIRST = 0;
|
|
|
|
|
*R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc);
|
|
|
|
|
|
|
|
|
|
/* tell the upper layers we're ok again */
|
|
|
|
|
|
|
|
|
|
netif_wake_queue(dev);
|
|
|
|
|
spin_unlock_irqrestore(&np->lock, flags);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* This will only be invoked if the driver is _not_ in XOFF state.
|
|
|
|
|
* What this means is that we need not check it, and that this
|
|
|
|
|
* invariant will hold if we make sure that the netif_*_queue()
|
|
|
|
|
* calls are done at the proper times.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_send_packet(struct sk_buff *skb, struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
unsigned char *buf = skb->data;
|
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
|
|
#ifdef ETHDEBUG
|
|
|
|
|
printk("send packet len %d\n", length);
|
|
|
|
|
#endif
|
|
|
|
|
spin_lock_irqsave(&np->lock, flags); /* protect from tx_interrupt and ourself */
|
|
|
|
|
|
|
|
|
|
myNextTxDesc->skb = skb;
|
|
|
|
|
|
|
|
|
|
dev->trans_start = jiffies;
|
|
|
|
|
|
|
|
|
|
e100_hardware_send_packet(buf, skb->len);
|
|
|
|
|
|
|
|
|
|
myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next);
|
|
|
|
|
|
|
|
|
|
/* Stop queue if full */
|
|
|
|
|
if (myNextTxDesc == myFirstTxDesc) {
|
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
spin_unlock_irqrestore(&np->lock, flags);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The typical workload of the driver:
|
|
|
|
|
* Handle the network interface interrupts.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
static irqreturn_t
|
|
|
|
|
e100rxtx_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
unsigned long irqbits = *R_IRQ_MASK2_RD;
|
|
|
|
|
|
|
|
|
|
/* Disable RX/TX IRQs to avoid reentrancy */
|
|
|
|
|
*R_IRQ_MASK2_CLR =
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr);
|
|
|
|
|
|
|
|
|
|
/* Handle received packets */
|
|
|
|
|
if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) {
|
|
|
|
|
/* acknowledge the eop interrupt */
|
|
|
|
|
|
|
|
|
|
*R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do);
|
|
|
|
|
|
|
|
|
|
/* check if one or more complete packets were indeed received */
|
|
|
|
|
|
|
|
|
|
while ((*R_DMA_CH1_FIRST != virt_to_phys(myNextRxDesc)) &&
|
|
|
|
|
(myNextRxDesc != myLastRxDesc)) {
|
|
|
|
|
/* Take out the buffer and give it to the OS, then
|
|
|
|
|
* allocate a new buffer to put a packet in.
|
|
|
|
|
*/
|
|
|
|
|
e100_rx(dev);
|
|
|
|
|
((struct net_local *)dev->priv)->stats.rx_packets++;
|
|
|
|
|
/* restart/continue on the channel, for safety */
|
|
|
|
|
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart);
|
|
|
|
|
/* clear dma channel 1 eop/descr irq bits */
|
|
|
|
|
*R_DMA_CH1_CLR_INTR =
|
|
|
|
|
IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do) |
|
|
|
|
|
IO_STATE(R_DMA_CH1_CLR_INTR, clr_descr, do);
|
|
|
|
|
|
|
|
|
|
/* now, we might have gotten another packet
|
|
|
|
|
so we have to loop back and check if so */
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Report any packets that have been sent */
|
|
|
|
|
while (myFirstTxDesc != phys_to_virt(*R_DMA_CH0_FIRST) &&
|
|
|
|
|
myFirstTxDesc != myNextTxDesc)
|
|
|
|
|
{
|
|
|
|
|
np->stats.tx_bytes += myFirstTxDesc->skb->len;
|
|
|
|
|
np->stats.tx_packets++;
|
|
|
|
|
|
|
|
|
|
/* dma is ready with the transmission of the data in tx_skb, so now
|
|
|
|
|
we can release the skb memory */
|
|
|
|
|
dev_kfree_skb_irq(myFirstTxDesc->skb);
|
|
|
|
|
myFirstTxDesc->skb = 0;
|
|
|
|
|
myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) {
|
|
|
|
|
/* acknowledge the eop interrupt and wake up queue */
|
|
|
|
|
*R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do);
|
|
|
|
|
netif_wake_queue(dev);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Enable RX/TX IRQs again */
|
|
|
|
|
*R_IRQ_MASK2_SET =
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set);
|
|
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static irqreturn_t
|
|
|
|
|
e100nw_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
|
|
|
|
{
|
|
|
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
unsigned long irqbits = *R_IRQ_MASK0_RD;
|
|
|
|
|
|
|
|
|
|
/* check for underrun irq */
|
|
|
|
|
if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) {
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr);
|
|
|
|
|
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop);
|
|
|
|
|
np->stats.tx_errors++;
|
|
|
|
|
D(printk("ethernet receiver underrun!\n"));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* check for overrun irq */
|
|
|
|
|
if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) {
|
|
|
|
|
update_rx_stats(&np->stats); /* this will ack the irq */
|
|
|
|
|
D(printk("ethernet receiver overrun!\n"));
|
|
|
|
|
}
|
|
|
|
|
/* check for excessive collision irq */
|
|
|
|
|
if (irqbits & IO_STATE(R_IRQ_MASK0_RD, excessive_col, active)) {
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr);
|
|
|
|
|
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
|
|
|
|
|
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop);
|
|
|
|
|
*R_NETWORK_TR_CTRL = IO_STATE(R_NETWORK_TR_CTRL, clr_error, clr);
|
|
|
|
|
np->stats.tx_errors++;
|
|
|
|
|
D(printk("ethernet excessive collisions!\n"));
|
|
|
|
|
}
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We have a good packet(s), get it/them out of the buffers. */
|
|
|
|
|
static void
|
|
|
|
|
e100_rx(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
int length = 0;
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
unsigned char *skb_data_ptr;
|
|
|
|
|
#ifdef ETHDEBUG
|
|
|
|
|
int i;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if (!led_active && time_after(jiffies, led_next_time)) {
|
|
|
|
|
/* light the network leds depending on the current speed. */
|
|
|
|
|
e100_set_network_leds(NETWORK_ACTIVITY);
|
|
|
|
|
|
|
|
|
|
/* Set the earliest time we may clear the LED */
|
|
|
|
|
led_next_time = jiffies + NET_FLASH_TIME;
|
|
|
|
|
led_active = 1;
|
|
|
|
|
mod_timer(&clear_led_timer, jiffies + HZ/10);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
length = myNextRxDesc->descr.hw_len - 4;
|
|
|
|
|
((struct net_local *)dev->priv)->stats.rx_bytes += length;
|
|
|
|
|
|
|
|
|
|
#ifdef ETHDEBUG
|
|
|
|
|
printk("Got a packet of length %d:\n", length);
|
|
|
|
|
/* dump the first bytes in the packet */
|
|
|
|
|
skb_data_ptr = (unsigned char *)phys_to_virt(myNextRxDesc->descr.buf);
|
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
|
|
|
printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i * 8,
|
|
|
|
|
skb_data_ptr[0],skb_data_ptr[1],skb_data_ptr[2],skb_data_ptr[3],
|
|
|
|
|
skb_data_ptr[4],skb_data_ptr[5],skb_data_ptr[6],skb_data_ptr[7]);
|
|
|
|
|
skb_data_ptr += 8;
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if (length < RX_COPYBREAK) {
|
|
|
|
|
/* Small packet, copy data */
|
|
|
|
|
skb = dev_alloc_skb(length - ETHER_HEAD_LEN);
|
|
|
|
|
if (!skb) {
|
|
|
|
|
np->stats.rx_errors++;
|
|
|
|
|
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */
|
|
|
|
|
skb_data_ptr = skb_push(skb, ETHER_HEAD_LEN); /* allocate room for the header */
|
|
|
|
|
|
|
|
|
|
#ifdef ETHDEBUG
|
|
|
|
|
printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n",
|
|
|
|
|
skb->head, skb->data, skb->tail, skb->end);
|
|
|
|
|
printk("copying packet to 0x%x.\n", skb_data_ptr);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
memcpy(skb_data_ptr, phys_to_virt(myNextRxDesc->descr.buf), length);
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
/* Large packet, send directly to upper layers and allocate new
|
|
|
|
|
* memory (aligned to cache line boundary to avoid bug).
|
|
|
|
|
* Before sending the skb to upper layers we must make sure that
|
|
|
|
|
* skb->data points to the aligned start of the packet.
|
|
|
|
|
*/
|
|
|
|
|
int align;
|
|
|
|
|
struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES);
|
|
|
|
|
if (!new_skb) {
|
|
|
|
|
np->stats.rx_errors++;
|
|
|
|
|
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
skb = myNextRxDesc->skb;
|
|
|
|
|
align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data;
|
|
|
|
|
skb_put(skb, length + align);
|
|
|
|
|
skb_pull(skb, align); /* Remove alignment bytes */
|
|
|
|
|
myNextRxDesc->skb = new_skb;
|
|
|
|
|
myNextRxDesc->descr.buf = L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc->skb->data));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
skb->dev = dev;
|
|
|
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
|
|
|
|
|
|
|
|
/* Send the packet to the upper layers */
|
|
|
|
|
netif_rx(skb);
|
|
|
|
|
|
|
|
|
|
/* Prepare for next packet */
|
|
|
|
|
myNextRxDesc->descr.status = 0;
|
|
|
|
|
myPrevRxDesc = myNextRxDesc;
|
|
|
|
|
myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next);
|
|
|
|
|
|
|
|
|
|
rx_queue_len++;
|
|
|
|
|
|
|
|
|
|
/* Check if descriptors should be returned */
|
|
|
|
|
if (rx_queue_len == RX_QUEUE_THRESHOLD) {
|
|
|
|
|
flush_etrax_cache();
|
|
|
|
|
myPrevRxDesc->descr.ctrl |= d_eol;
|
|
|
|
|
myLastRxDesc->descr.ctrl &= ~d_eol;
|
|
|
|
|
myLastRxDesc = myPrevRxDesc;
|
|
|
|
|
rx_queue_len = 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* The inverse routine to net_open(). */
|
|
|
|
|
static int
|
|
|
|
|
e100_close(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
|
|
|
|
|
printk(KERN_INFO "Closing %s.\n", dev->name);
|
|
|
|
|
|
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
|
|
|
|
|
|
*R_IRQ_MASK0_CLR =
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr);
|
|
|
|
|
|
|
|
|
|
*R_IRQ_MASK2_CLR =
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) |
|
|
|
|
|
IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr);
|
|
|
|
|
|
|
|
|
|
/* Stop the receiver and the transmitter */
|
|
|
|
|
|
|
|
|
|
RESET_DMA(NETWORK_TX_DMA_NBR);
|
|
|
|
|
RESET_DMA(NETWORK_RX_DMA_NBR);
|
|
|
|
|
|
|
|
|
|
/* Flush the Tx and disable Rx here. */
|
|
|
|
|
|
|
|
|
|
free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev);
|
|
|
|
|
free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev);
|
|
|
|
|
free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev);
|
|
|
|
|
|
|
|
|
|
/* Update the statistics here. */
|
|
|
|
|
|
|
|
|
|
update_rx_stats(&np->stats);
|
|
|
|
|
update_tx_stats(&np->stats);
|
|
|
|
|
|
|
|
|
|
/* Stop speed/duplex timers */
|
|
|
|
|
del_timer(&speed_timer);
|
|
|
|
|
del_timer(&duplex_timer);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
|
|
|
{
|
|
|
|
|
struct mii_ioctl_data *data = if_mii(ifr);
|
|
|
|
|
struct net_local *np = netdev_priv(dev);
|
|
|
|
|
|
|
|
|
|
spin_lock(&np->lock); /* Preempt protection */
|
|
|
|
|
switch (cmd) {
|
|
|
|
|
case SIOCETHTOOL:
|
|
|
|
|
return e100_ethtool_ioctl(dev,ifr);
|
|
|
|
|
case SIOCGMIIPHY: /* Get PHY address */
|
|
|
|
|
data->phy_id = mdio_phy_addr;
|
|
|
|
|
break;
|
|
|
|
|
case SIOCGMIIREG: /* Read MII register */
|
|
|
|
|
data->val_out = e100_get_mdio_reg(dev, mdio_phy_addr, data->reg_num);
|
|
|
|
|
break;
|
|
|
|
|
case SIOCSMIIREG: /* Write MII register */
|
|
|
|
|
e100_set_mdio_reg(dev, mdio_phy_addr, data->reg_num, data->val_in);
|
|
|
|
|
break;
|
|
|
|
|
/* The ioctls below should be considered obsolete but are */
|
|
|
|
|
/* still present for compatability with old scripts/apps */
|
|
|
|
|
case SET_ETH_SPEED_10: /* 10 Mbps */
|
|
|
|
|
e100_set_speed(dev, 10);
|
|
|
|
|
break;
|
|
|
|
|
case SET_ETH_SPEED_100: /* 100 Mbps */
|
|
|
|
|
e100_set_speed(dev, 100);
|
|
|
|
|
break;
|
|
|
|
|
case SET_ETH_SPEED_AUTO: /* Auto negotiate speed */
|
|
|
|
|
e100_set_speed(dev, 0);
|
|
|
|
|
break;
|
|
|
|
|
case SET_ETH_DUPLEX_HALF: /* Half duplex. */
|
|
|
|
|
e100_set_duplex(dev, half);
|
|
|
|
|
break;
|
|
|
|
|
case SET_ETH_DUPLEX_FULL: /* Full duplex. */
|
|
|
|
|
e100_set_duplex(dev, full);
|
|
|
|
|
break;
|
|
|
|
|
case SET_ETH_DUPLEX_AUTO: /* Autonegotiate duplex*/
|
|
|
|
|
e100_set_duplex(dev, autoneg);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&np->lock);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_ethtool_ioctl(struct net_device *dev, struct ifreq *ifr)
|
|
|
|
|
{
|
|
|
|
|
struct ethtool_cmd ecmd;
|
|
|
|
|
|
|
|
|
|
if (copy_from_user(&ecmd, ifr->ifr_data, sizeof (ecmd)))
|
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
|
|
switch (ecmd.cmd) {
|
|
|
|
|
case ETHTOOL_GSET:
|
|
|
|
|
{
|
|
|
|
|
memset((void *) &ecmd, 0, sizeof (ecmd));
|
|
|
|
|
ecmd.supported =
|
|
|
|
|
SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII |
|
|
|
|
|
SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
|
|
|
|
|
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
|
|
|
|
|
ecmd.port = PORT_TP;
|
|
|
|
|
ecmd.transceiver = XCVR_EXTERNAL;
|
|
|
|
|
ecmd.phy_address = mdio_phy_addr;
|
|
|
|
|
ecmd.speed = current_speed;
|
|
|
|
|
ecmd.duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
|
|
|
|
|
ecmd.advertising = ADVERTISED_TP;
|
|
|
|
|
if (current_duplex == autoneg && current_speed_selection == 0)
|
|
|
|
|
ecmd.advertising |= ADVERTISED_Autoneg;
|
|
|
|
|
else {
|
|
|
|
|
ecmd.advertising |=
|
|
|
|
|
ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
|
|
|
|
|
ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
|
|
|
|
|
if (current_speed_selection == 10)
|
|
|
|
|
ecmd.advertising &= ~(ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full);
|
|
|
|
|
else if (current_speed_selection == 100)
|
|
|
|
|
ecmd.advertising &= ~(ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full);
|
|
|
|
|
if (current_duplex == half)
|
|
|
|
|
ecmd.advertising &= ~(ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Full);
|
|
|
|
|
else if (current_duplex == full)
|
|
|
|
|
ecmd.advertising &= ~(ADVERTISED_10baseT_Half | ADVERTISED_100baseT_Half);
|
|
|
|
|
}
|
|
|
|
|
ecmd.autoneg = AUTONEG_ENABLE;
|
|
|
|
|
if (copy_to_user(ifr->ifr_data, &ecmd, sizeof (ecmd)))
|
|
|
|
|
return -EFAULT;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case ETHTOOL_SSET:
|
|
|
|
|
{
|
|
|
|
|
if (!capable(CAP_NET_ADMIN)) {
|
|
|
|
|
return -EPERM;
|
|
|
|
|
}
|
|
|
|
|
if (ecmd.autoneg == AUTONEG_ENABLE) {
|
|
|
|
|
e100_set_duplex(dev, autoneg);
|
|
|
|
|
e100_set_speed(dev, 0);
|
|
|
|
|
} else {
|
|
|
|
|
e100_set_duplex(dev, ecmd.duplex == DUPLEX_HALF ? half : full);
|
|
|
|
|
e100_set_speed(dev, ecmd.speed == SPEED_10 ? 10: 100);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case ETHTOOL_GDRVINFO:
|
|
|
|
|
{
|
|
|
|
|
struct ethtool_drvinfo info;
|
|
|
|
|
memset((void *) &info, 0, sizeof (info));
|
|
|
|
|
strncpy(info.driver, "ETRAX 100LX", sizeof(info.driver) - 1);
|
|
|
|
|
strncpy(info.version, "$Revision: 1.31 $", sizeof(info.version) - 1);
|
|
|
|
|
strncpy(info.fw_version, "N/A", sizeof(info.fw_version) - 1);
|
|
|
|
|
strncpy(info.bus_info, "N/A", sizeof(info.bus_info) - 1);
|
|
|
|
|
info.regdump_len = 0;
|
|
|
|
|
info.eedump_len = 0;
|
|
|
|
|
info.testinfo_len = 0;
|
|
|
|
|
if (copy_to_user(ifr->ifr_data, &info, sizeof (info)))
|
|
|
|
|
return -EFAULT;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case ETHTOOL_NWAY_RST:
|
|
|
|
|
if (current_duplex == autoneg && current_speed_selection == 0)
|
|
|
|
|
e100_negotiate(dev);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
e100_set_config(struct net_device *dev, struct ifmap *map)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *np = (struct net_local *)dev->priv;
|
|
|
|
|
spin_lock(&np->lock); /* Preempt protection */
|
|
|
|
|
|
|
|
|
|
switch(map->port) {
|
|
|
|
|
case IF_PORT_UNKNOWN:
|
|
|
|
|
/* Use autoneg */
|
|
|
|
|
e100_set_speed(dev, 0);
|
|
|
|
|
e100_set_duplex(dev, autoneg);
|
|
|
|
|
break;
|
|
|
|
|
case IF_PORT_10BASET:
|
|
|
|
|
e100_set_speed(dev, 10);
|
|
|
|
|
e100_set_duplex(dev, autoneg);
|
|
|
|
|
break;
|
|
|
|
|
case IF_PORT_100BASET:
|
|
|
|
|
case IF_PORT_100BASETX:
|
|
|
|
|
e100_set_speed(dev, 100);
|
|
|
|
|
e100_set_duplex(dev, autoneg);
|
|
|
|
|
break;
|
|
|
|
|
case IF_PORT_100BASEFX:
|
|
|
|
|
case IF_PORT_10BASE2:
|
|
|
|
|
case IF_PORT_AUI:
|
|
|
|
|
spin_unlock(&np->lock);
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
printk(KERN_ERR "%s: Invalid media selected", dev->name);
|
|
|
|
|
spin_unlock(&np->lock);
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock(&np->lock);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
update_rx_stats(struct net_device_stats *es)
|
|
|
|
|
{
|
|
|
|
|
unsigned long r = *R_REC_COUNTERS;
|
|
|
|
|
/* update stats relevant to reception errors */
|
|
|
|
|
es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r);
|
|
|
|
|
es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r);
|
|
|
|
|
es->rx_frame_errors += IO_EXTRACT(R_REC_COUNTERS, alignment_error, r);
|
|
|
|
|
es->rx_length_errors += IO_EXTRACT(R_REC_COUNTERS, oversize, r);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
update_tx_stats(struct net_device_stats *es)
|
|
|
|
|
{
|
|
|
|
|
unsigned long r = *R_TR_COUNTERS;
|
|
|
|
|
/* update stats relevant to transmission errors */
|
|
|
|
|
es->collisions +=
|
|
|
|
|
IO_EXTRACT(R_TR_COUNTERS, single_col, r) +
|
|
|
|
|
IO_EXTRACT(R_TR_COUNTERS, multiple_col, r);
|
|
|
|
|
es->tx_errors += IO_EXTRACT(R_TR_COUNTERS, deferred, r);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Get the current statistics.
|
|
|
|
|
* This may be called with the card open or closed.
|
|
|
|
|
*/
|
|
|
|
|
static struct net_device_stats *
|
|
|
|
|
e100_get_stats(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *lp = (struct net_local *)dev->priv;
|
|
|
|
|
unsigned long flags;
|
|
|
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
|
|
|
|
|
|
update_rx_stats(&lp->stats);
|
|
|
|
|
update_tx_stats(&lp->stats);
|
|
|
|
|
|
|
|
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
|
return &lp->stats;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Set or clear the multicast filter for this adaptor.
|
|
|
|
|
* num_addrs == -1 Promiscuous mode, receive all packets
|
|
|
|
|
* num_addrs == 0 Normal mode, clear multicast list
|
|
|
|
|
* num_addrs > 0 Multicast mode, receive normal and MC packets,
|
|
|
|
|
* and do best-effort filtering.
|
|
|
|
|
*/
|
|
|
|
|
static void
|
|
|
|
|
set_multicast_list(struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct net_local *lp = (struct net_local *)dev->priv;
|
|
|
|
|
int num_addr = dev->mc_count;
|
|
|
|
|
unsigned long int lo_bits;
|
|
|
|
|
unsigned long int hi_bits;
|
|
|
|
|
spin_lock(&lp->lock);
|
|
|
|
|
if (dev->flags & IFF_PROMISC)
|
|
|
|
|
{
|
|
|
|
|
/* promiscuous mode */
|
|
|
|
|
lo_bits = 0xfffffffful;
|
|
|
|
|
hi_bits = 0xfffffffful;
|
|
|
|
|
|
|
|
|
|
/* Enable individual receive */
|
|
|
|
|
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, receive);
|
|
|
|
|
*R_NETWORK_REC_CONFIG = network_rec_config_shadow;
|
|
|
|
|
} else if (dev->flags & IFF_ALLMULTI) {
|
|
|
|
|
/* enable all multicasts */
|
|
|
|
|
lo_bits = 0xfffffffful;
|
|
|
|
|
hi_bits = 0xfffffffful;
|
|
|
|
|
|
|
|
|
|
/* Disable individual receive */
|
|
|
|
|
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard);
|
|
|
|
|
*R_NETWORK_REC_CONFIG = network_rec_config_shadow;
|
|
|
|
|
} else if (num_addr == 0) {
|
|
|
|
|
/* Normal, clear the mc list */
|
|
|
|
|
lo_bits = 0x00000000ul;
|
|
|
|
|
hi_bits = 0x00000000ul;
|
|
|
|
|
|
|
|
|
|
/* Disable individual receive */
|
|
|
|
|
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard);
|
|
|
|
|
*R_NETWORK_REC_CONFIG = network_rec_config_shadow;
|
|
|
|
|
} else {
|
|
|
|
|
/* MC mode, receive normal and MC packets */
|
|
|
|
|
char hash_ix;
|
|
|
|
|
struct dev_mc_list *dmi = dev->mc_list;
|
|
|
|
|
int i;
|
|
|
|
|
char *baddr;
|
|
|
|
|
lo_bits = 0x00000000ul;
|
|
|
|
|
hi_bits = 0x00000000ul;
|
|
|
|
|
for (i=0; i<num_addr; i++) {
|
|
|
|
|
/* Calculate the hash index for the GA registers */
|
|
|
|
|
|
|
|
|
|
hash_ix = 0;
|
|
|
|
|
baddr = dmi->dmi_addr;
|
|
|
|
|
hash_ix ^= (*baddr) & 0x3f;
|
|
|
|
|
hash_ix ^= ((*baddr) >> 6) & 0x03;
|
|
|
|
|
++baddr;
|
|
|
|
|
hash_ix ^= ((*baddr) << 2) & 0x03c;
|
|
|
|
|
hash_ix ^= ((*baddr) >> 4) & 0xf;
|
|
|
|
|
++baddr;
|
|
|
|
|
hash_ix ^= ((*baddr) << 4) & 0x30;
|
|
|
|
|
hash_ix ^= ((*baddr) >> 2) & 0x3f;
|
|
|
|
|
++baddr;
|
|
|
|
|
hash_ix ^= (*baddr) & 0x3f;
|
|
|
|
|
hash_ix ^= ((*baddr) >> 6) & 0x03;
|
|
|
|
|
++baddr;
|
|
|
|
|
hash_ix ^= ((*baddr) << 2) & 0x03c;
|
|
|
|
|
hash_ix ^= ((*baddr) >> 4) & 0xf;
|
|
|
|
|
++baddr;
|
|
|
|
|
hash_ix ^= ((*baddr) << 4) & 0x30;
|
|
|
|
|
hash_ix ^= ((*baddr) >> 2) & 0x3f;
|
|
|
|
|
|
|
|
|
|
hash_ix &= 0x3f;
|
|
|
|
|
|
|
|
|
|
if (hash_ix >= 32) {
|
|
|
|
|
hi_bits |= (1 << (hash_ix-32));
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
lo_bits |= (1 << hash_ix);
|
|
|
|
|
}
|
|
|
|
|
dmi = dmi->next;
|
|
|
|
|
}
|
|
|
|
|
/* Disable individual receive */
|
|
|
|
|
SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard);
|
|
|
|
|
*R_NETWORK_REC_CONFIG = network_rec_config_shadow;
|
|
|
|
|
}
|
|
|
|
|
*R_NETWORK_GA_0 = lo_bits;
|
|
|
|
|
*R_NETWORK_GA_1 = hi_bits;
|
|
|
|
|
spin_unlock(&lp->lock);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
e100_hardware_send_packet(char *buf, int length)
|
|
|
|
|
{
|
|
|
|
|
D(printk("e100 send pack, buf 0x%x len %d\n", buf, length));
|
|
|
|
|
|
|
|
|
|
if (!led_active && time_after(jiffies, led_next_time)) {
|
|
|
|
|
/* light the network leds depending on the current speed. */
|
|
|
|
|
e100_set_network_leds(NETWORK_ACTIVITY);
|
|
|
|
|
|
|
|
|
|
/* Set the earliest time we may clear the LED */
|
|
|
|
|
led_next_time = jiffies + NET_FLASH_TIME;
|
|
|
|
|
led_active = 1;
|
|
|
|
|
mod_timer(&clear_led_timer, jiffies + HZ/10);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* configure the tx dma descriptor */
|
|
|
|
|
myNextTxDesc->descr.sw_len = length;
|
|
|
|
|
myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait;
|
|
|
|
|
myNextTxDesc->descr.buf = virt_to_phys(buf);
|
|
|
|
|
|
|
|
|
|
/* Move end of list */
|
|
|
|
|
myLastTxDesc->descr.ctrl &= ~d_eol;
|
|
|
|
|
myLastTxDesc = myNextTxDesc;
|
|
|
|
|
|
|
|
|
|
/* Restart DMA channel */
|
|
|
|
|
*R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_clear_network_leds(unsigned long dummy)
|
|
|
|
|
{
|
|
|
|
|
if (led_active && time_after(jiffies, led_next_time)) {
|
|
|
|
|
e100_set_network_leds(NO_NETWORK_ACTIVITY);
|
|
|
|
|
|
|
|
|
|
/* Set the earliest time we may set the LED */
|
|
|
|
|
led_next_time = jiffies + NET_FLASH_PAUSE;
|
|
|
|
|
led_active = 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
e100_set_network_leds(int active)
|
|
|
|
|
{
|
|
|
|
|
#if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK)
|
|
|
|
|
int light_leds = (active == NO_NETWORK_ACTIVITY);
|
|
|
|
|
#elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY)
|
|
|
|
|
int light_leds = (active == NETWORK_ACTIVITY);
|
|
|
|
|
#else
|
|
|
|
|
#error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY"
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if (!current_speed) {
|
|
|
|
|
/* Make LED red, link is down */
|
|
|
|
|
#if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION)
|
|
|
|
|
LED_NETWORK_SET(LED_RED);
|
|
|
|
|
#else
|
|
|
|
|
LED_NETWORK_SET(LED_OFF);
|
|
|
|
|
#endif
|
|
|
|
|
}
|
|
|
|
|
else if (light_leds) {
|
|
|
|
|
if (current_speed == 10) {
|
|
|
|
|
LED_NETWORK_SET(LED_ORANGE);
|
|
|
|
|
} else {
|
|
|
|
|
LED_NETWORK_SET(LED_GREEN);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
LED_NETWORK_SET(LED_OFF);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
etrax_init_module(void)
|
|
|
|
|
{
|
|
|
|
|
return etrax_ethernet_init();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int __init
|
|
|
|
|
e100_boot_setup(char* str)
|
|
|
|
|
{
|
|
|
|
|
struct sockaddr sa = {0};
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
/* Parse the colon separated Ethernet station address */
|
|
|
|
|
for (i = 0; i < ETH_ALEN; i++) {
|
|
|
|
|
unsigned int tmp;
|
|
|
|
|
if (sscanf(str + 3*i, "%2x", &tmp) != 1) {
|
|
|
|
|
printk(KERN_WARNING "Malformed station address");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
sa.sa_data[i] = (char)tmp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
default_mac = sa;
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
__setup("etrax100_eth=", e100_boot_setup);
|
|
|
|
|
|
|
|
|
|
module_init(etrax_init_module);
|
