2002-06-14  Gary Thomas  <gary@chez-thomas.org>	* src/if_upd985xx.c: 	Need to include <pkgconf/io_eth_drivers.h> for proper configuration	of stand-alone (polled) vs. system (interrupt driven) mode.2001-09-13  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (upd985xx_eth_upd985xx_init): Fake an ESA if	we see all ones from the EEPROM as well as all zeros.2001-08-30  Hugo Tyson  <hmt@redhat.com>	* cdl/upd985xx_eth_drivers.cdl: Make the "..._E2ONLY" workaround	option on by default since this is how it will be used - the CPU	load does suffer somewhat if promisc mode is set in the hardware.	This should be unset to allow the workaround for E1 at 100Mbit.2001-08-30  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (PacketRxReady): Re-write the manual	implementation of ESA matching for workaround E1E2 when the device	is in promiscuous mode.  It was having problems with the previous	version; this works better.2001-08-24  Hugo Tyson  <hmt@redhat.com>	* cdl/upd985xx_eth_drivers.cdl: Configury for an alternate case	where we workaround hardware bug E2 only, as a subset of the E1E2	complete fix.  Added more description to the options too.	* src/if_upd985xx.c (eth_upd985xx_configure): Handle an alternate	case where we workaround hardware bug E2 only.  This means leaving	the device in normal mode (unless set to promisc) and doing MAC	address filtering by hand anyway.2001-08-20  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c: Guard all entrypoints that can mess with	hardware state by "active" check.  If the net is included in an	app, but not used, it is init'd but not started - this can leave a	pending interrupt from RedBoot's use of the network to take us	completely by surprise.  So init() acks and masks the interrupt,	can_send(), recv() and deliver() now demur if not active.	Also some additional STATIC's on entrypoint functions.2001-08-16  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (upd985xx_eth_upd985xx_init): If the EEPROM	contains nothing (or isn't fitted?) fake an ESA so we can get	RedBoot going on the board without special configury.2001-08-16  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (eth_upd985xx_configure): Use smaller numbers	for the Tx Fill Threshold [TX_FLTH] and DMA Tx Burst Size [DTBS]	because the hardware is even more broken than first throught -	this is new information on fault E4.  I also tagged this with the	name of the option we would use if this were cdl controlled - but	since it's just setup I see no need to change it, so no CDL.2001-08-16  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (TxDone): Since it still wedged occasionally,	with an "out of rx buffers" status but nothing else, this is a	much simplified workaround for bug E8.  If we see the suspect	transmit status, simply reset the whole subsystem there and then.	This leaves it in far more of a known state.  It's neater anyway.2001-08-15  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (eth_upd985xx_send): Small hacks to recover	from various wedged states with bogus or unexpected ETH_ISR	values...  0x80000000: We detect this in the deliver routine and	totally reset the system.  "out of rx buffers" with no "good rx":	we unmask and check for all these RX interrupts, not just "good	rx".  Also PacketRxReady() shortcuts to resetting the receive	engine when it sees the problem.  I suspect these might be caused	by the E8 workaround below, perhaps introducing some race	condition with turning off the receiver just when it rx'd - and of	course E1E2 means it receives far more packets.2001-08-07  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c: Workaround various bugs in the hardware;	these workarounds are conditionally compiled via CDL options named	CYGOPT_DEVS_ETH_MIPS_UPD985XX_HARDWARE_BUGS_xxx in general; 'xxx'	is the reference for the mis-feature.  All are enabled by default.	To summarize:	(eth_upd985xx_reset): xxx=S1: insert reads between writes to the	device to avoid a possible deadlock; macro FLUSH_WRITES().	(PacketRxReady): xxx=E1E2: we set the device in promiscuous mode	always, and implement ESA matching in code.  The cost is small.	If promisc mode is set by the stack, we pass all packets.	(eth_upd985xx_send): xxx=E3: we copy any transmit that uses 3 or	more SGs into a static contiguous buffer and transmit from that	thus using only one buffer descriptor.	(eth_upd985xx_send):	(TxDone): xxx=E8: we make a note that a tx ended badly and when	starting the next tx, we disable and reset the transmitter.	* cdl/upd985xx_eth_drivers.cdl: New subcomponent for controlling	these workarounds: CYGPKG_DEVS_ETH_MIPS_UPD985XX_HARDWARE_BUGS.	"Workarounds for Ethernet Hardware bugs"2001-07-16  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (PacketRxReady): Test for, rather than assert,	packet size in range.  The hardware can report a tiny packet as	AOK, with no bad in the status, despite the doc's reassurances.2001-07-13  Hugo Tyson  <hmt@redhat.com>	* cdl/upd985xx_eth_drivers.cdl: Turn off the startup chatter.2001-07-13  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (TxDone): Test a few more bits for tx	complete; it turns out you can get tx underruns when the CPU us	heavily loaded, as in the tcp_echo tests with high load.2001-07-13  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (eth_upd985xx_send): Use HAL_DCACHE_STORE()	rather than syncing the whole of cache every sglist entry(=mbuf).	Turns out the cache op must be cache line aligned to work on the	4120, boo, unlike other MIPS and unlike the doc, even.2001-07-12  Hugo Tyson  <hmt@redhat.com>	* cdl/upd985xx_eth_drivers.cdl (CYGPKG_DEVS_ETH_MIPS_UPD985XX_ETH0):	Whole new section to address configuring the source of the MAC	address.  Also allows configury of the device's name ("eth0") for	cohabitation with additional devices.	* src/if_upd985xx.c (upd985xx_eth_upd985xx_init): Pick up the ESA	from EEPROM if it's available, also support a fixed ESA from CDL	configuration land.  A few minor changes to the structure	initialization to accommodate this; also pick up the interrupt	vector from struct init.	(eth_set_mac_address): New routine available via the ioctl()	entry, for use when neither a fixed nor EEPROM address is	available.2001-07-12  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (NUM_RXBUFS): Reduce NUM_RXBUFS to 8; IME	fewer results in lost rx's in typical systems.  Enlarge rx buffers	slightly, to accommodate oversize VLAN packets.  128 bytes extra	should be enough.  Implemented eth_upd985xx_configure() selection	of promiscuous mode and allow oversize packets - up to the allowed	oversize.  Otherwise we would get confused if a packet ate more	than 1 rx buffer.2001-07-12  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c: Tidy up debug print defaults; make functions	static; add a few extra statistics to the device object; pass a	p_eth_upd985xx around more consistently for if we switch to	multiple devices in future; comment out mii_write(); handle	stopping the device with a tx pending; remove some commented-out	templates copied from another driver; and fill in SNMP statistics.	In other words, many minor changes.2001-07-11  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c (PacketRxReady): Recover from running out of	receive buffers.  All very dodgy, but it seems to work.	Additional efforts are also made to reset the device, having	realized how hard it is to re-initialize the receive engine once	it has been awakened.2001-07-11  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c: Efficient Rx now essentially working, with a	simple circular buffer, always linked into a ring, and one entry	of which is always NULL,NULL to bring the rx machinery to a halt.	If it reaches thus far the rx mechanism seems to jam; will deal	with that next.2001-07-09  Hugo Tyson  <hmt@redhat.com>	* src/if_upd985xx.c: Rejigged version of the rx buffer system;	still not working properly, still not a good match for the	hardware's elusive semantics.  Committed anyway, to keep it around	for reference.	(eth_upd985xx_status): Also removed all the cruft about	renegotiating line status; it's not needed.2001-07-06  Hugo Tyson  <hmt@redhat.com>	* include/upd985xx_eth.h (ETH_MADR_PHY_DEVICE_PHYS_ADDRESS):	Change name of PHY address symbol to generic not SEEQ.  	Comment out the non-standard symbols for useful bits that the	previous PHY device supported.	* src/if_upd985xx.c (eth_upd985xx_reset): If there is a valid ESA	in the MAC already, run with it - it would have come from the	not-fitted serial EEPROM, via some different registers.	(upd985xx_eth_upd985xx_init): Moved the call to reset about to	accommodate this.	(eth_upd985xx_status): Omit renegotiation of link properties and	use the intersection of the capabilities bits to report what	speed, duplex, we are running at.  More portable.	(mii_write):	(mii_read): Change name of PHY address symbol to generic not SEEQ	'cos the board has changed.2001-07-06  Hugo Tyson  <hmt@redhat.com>	* ChangeLog:	* cdl/upd985xx_eth_drivers.cdl:	* include/upd985xx_eth.h:	* src/if_upd985xx.c:	New files.  Initial checkin of limping along version of 	NEC upd985xx ethernet driver.	Limitations:	ESA is hard coded.	It talks to the PHY just to make sure - helped with debug anyway.	No SNMP data exported.	No ioctl() for promiscuous mode or VLAN mode.	Only one TX at once.	Only one RX buffer, so no RX until serviced.	It seems to loose interrupts - inevitably, for an eth device - and	there's no "catchup" defense against this yet.	It's oriented to the "old" (already) board - so the particular PHY	and GPIO layout.//===========================================================================//####ECOSGPLCOPYRIGHTBEGIN####// -------------------------------------------// This file is part of eCos, the Embedded Configurable Operating System.// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.//// eCos is free software; you can redistribute it and/or modify it under// the terms of the GNU General Public License as published by the Free// Software Foundation; either version 2 or (at your option) any later version.//// eCos is distributed in the hope that it will be useful, but WITHOUT ANY// WARRANTY; without even the implied warranty of MERCHANTABILITY or// FITNESS FOR A PARTICULAR PURPOSE.  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