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+2002-10-06 Andrew Lunn <andrew.lunn@ascom.ch>
+
+ * include/devs_eth_ebsa285.inl: EBSA has the ethernet devices
+ multiplexed onto one interrupt. This got losted when generalising
+ the driver.
+
+2002-05-14 Jesper Skov <jskov@redhat.com>
+
+ * include/devs_eth_ebsa285.inl: Fix warnings.
+
+2001-11-19 Hugo Tyson <hmt@redhat.com>
+2001-11-19 Anssi Pulkkinen <Anssi.Pulkkinen@ascom.ch>
+
+ * src/if_ebsa285.c (TxMachine): The test to see if there is a new
+ tx to start must also say "go" if the tx queue is full. Normally,
+ if the txqueue is full, a tx will be occurring at all times - so
+ one will complete soon, so the tx queue full flag will soon be
+ cleared, and this condition will recover. I suspect a subtle race
+ which effectively means a new tx is queued and fills the queue in
+ between two tx's, so no TxDone() follows, causes the hang which we
+ get without this extra test under high load. [CASE 106686]
+
+2001-08-31 Hugo Tyson <hmt@redhat.com>
+2001-08-31 Sanjay Bisen <sanjay.bisen@ascom.ch>
+
+ * src/if_ebsa285.c (TxDone): Check from prev change is moved to
+ the logical driver. Also, we zero the key in global state before
+ the callback - this should make no difference, but again it's good
+ practice, and ASCOM's tests indicate a benefit for CASE 106059.
+
+2001-08-22 Gary Thomas <gthomas@redhat.com>
+
+ * src/if_ebsa285.c:
+ printf() is no longer a part of RedBoot. Thus all programs
+ must use diag_printf() and related functions instead.
+
+2001-06-08 Gary Thomas <gthomas@redhat.com>
+
+ * src/if_ebsa285.c (TxDone): Defensive programming: only call
+ tx_done with new/unique key values.
+
+2001-03-12 Hugo Tyson <hmt@redhat.com>
+
+ * src/if_ebsa285.c: Make device config more consistent with that
+ used in other 82559 platforms, and fix a typo.
+
+2001-02-20 Hugo Tyson <hmt@redhat.com>
+2001-02-15 Martin Buck <martin.buck@ascom.ch>
+
+ * src/if_ebsa285.c: Configure i82559 not to drop oversized frames.
+ This is required for VLAN support (because the maximum frame size
+ including the VLAN tag is 1518 instead of 1514) and shouldn't
+ hurt otherwise. To do this, we now always configure the chip when
+ i82559_start is called, instead of relying on the default
+ configuration if promiscuous mode is off. Another advantage is that
+ we're now able to turn promiscuous mode off again after it was
+ enabled once.
+
+2001-01-02 Hugo Tyson <hmt@redhat.com>
+
+ * src/if_ebsa285.c (find_82559s_match_func): New func to match
+ complex PCI device requirements.
+ (pci_init_find_82559s): Use it, and the new PCI API to correctly
+ match a disparate bunch of devices on the one board.
+
+2000-12-21 Hugo Tyson <hmt@redhat.com>
+
+ * src/if_ebsa285.c (pci_init_find_82559s): Also check for the PCI
+ device whose name is ... 0x1209; "82559ER". Thanks to Martin Buck
+ <martin.buck@ascom.ch> for the ID for that.
+
+2000-11-19 Gary Thomas <gthomas@redhat.com>
+
+ * src/if_ebsa285.c (pci_init_find_82559s): Intel has at least
+ two devices equivalent to the 82559. Support both (0x1229, 0x01030).
+
+2000-10-05 Hugo Tyson <hmt@redhat.com>
+
+ * src/if_ebsa285.c: Deal with device interrupts in a nested
+ fashion - disable/restore is the semantics now, rather than
+ unconditionally unmasking. Also go directly to the 21285 PIC's
+ interrupt control registers to gain atomicity for these. Poll for
+ ready received packets when acknowledging an interrupt in the
+ tranmitting world; a race here could lose an Rx interrupt. Which
+ doesn't matter on a busy system, but in quieter times... there
+ will always be such a race because of the vague way the i82559's
+ status bits reflect how it's yanking the interrupt line; you have
+ to poll until the interrupt is gone before returning else spurious
+ interrupt failures occur. The issue is to close the window as
+ tightly as possible, which this change achieves at a minor cost in
+ performance - because of the time spent polling when not required.
+
+2000-09-11 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (i82559_poll): Only diddle the interface we
+ were asked to. This is more correct in terms of the intent of the
+ API, though it shouldn't really be necessary.
+
+2000-09-06 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (pci_init_find_82559s): Add asserts and an
+ unconditional check that the PCI window as configured matches the
+ address and size of the pci_window region from the MLT. This is
+ here because at present the MLT and CT cannot intercommunicate
+ enough. The separation of the PCI window is needed because
+ otherwise the malloc heap will eat all memory. [This is related
+ to CR 902624-CR, "MLT needs to be configuration aware"]
+
+2000-09-01 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * OVERVIEW: This is part of the change to the network stack to
+ greatly reduce latencies both of (other) DSRs and of thread
+ scheduling. All the work that the network stack *and* individual
+ ether drivers used to do in DSRs (including alarm callbacks and
+ data copies to/from the device memory) is moved into a "fast
+ network thread" instead. It calls a device's "deliver" function
+ to do the work that was previously in the DSR. This is a separate
+ thread so that it can be set higher priority than application
+ threads in order to minimize packet loss (depending on the
+ driver), if required (the application threads presumed to be
+ higher priority in turn than the network thread). A crucial
+ consequence of this is that we are no longer locking against DSRs,
+ so a plain mutex can be used rather than the global scheduler
+ lock, thus simplifying all the splfoo/splx() style functions.
+
+ * src/if_ebsa285.c: Minor: fix the big assert in i82559_send()
+ which suffered a race condition when called from the fast thread
+ rather than from a DSR. Major: Add a "deliver" entry to the
+ interface record for the "fast thread" implementation of the
+ network internal comms system. Provide a pass-up DSR to the
+ logical ether driver's DSR and appropriate delivery routine(s).
+ i82559_poll() now calls i82559_deliver() rather than the DSR. Add
+ valid data for mux'd DSR to pass on up.
+
+2000-09-01 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * tests/test_net_realtime.h: Tighten up the latency requirements
+ by a factor of 5; it all seems happy, so committed.
+
+2000-08-25 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (i82559_ioctl): A little further diddling; have
+ a bool to say whether the dot3 info is filled in.
+
+2000-08-24 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl: Do not export a symbol for the
+ device info file (include/ebsa285_info.h) since nobody needs
+ (portably) to include it now.
+
+ * src/if_ebsa285.c (i82559_ioctl): Handle new ioctl calls
+ ETH_DRV_GET_IF_STATS_UD and ETH_DRV_GET_IF_STATS to get loads of
+ statistical information out. _UD means update. The nonUD one can
+ be used instead mostly, if we find the performance hit too large.
+ This should allow SNMP (a) to not explode, (b) to get useful info
+ out of other device implementations than this one.
+
+ * include/ebsa285_info.h: Remove all the macro cruft for feature
+ detecting of lots of individual statistics; we now just have a
+ catch-all struct that SNMP uses, defined in the common ether
+ driver environment.
+
+2000-08-15 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (PacketRxReady): Put back the check for very
+ small packets into the driver; the layer above checks for that
+ (defensive programming) but only *after* asserting that the size
+ is large enough, to help detect that scenario from other drivers.
+ I believe we only have struct ether_header available if CYGPKG_NET
+ but I could be wrong.
+ [CASE 104353]
+
+2000-08-08 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (eth_set_promiscuous_mode):
+ - ccs->config_bytes[18]=0x70;
+ + ccs->config_bytes[18]=0x72; // Keep the Padding Enable bit
+ ...otherwise short frame sends don't work in promisc mode.
+ [CASE 104289]
+
+2000-08-07 Gary Thomas <gthomas@redhat.com>
+
+ * src/if_ebsa285.c (pciwindow_mem_alloc): Take out very noisy debug.
+
+2000-08-03 Gary Thomas <gthomas@redhat.com>
+
+ * src/if_ebsa285.c: Changes for stand-alone mode.
+
+ * cdl/ebsa285_eth_drivers.cdl: Ethernet driver package hierarchy changed.
+ Add option to control number of interfaces.
+
+2000-07-28 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (PacketRxReady): Do not attempt to forward
+ short packets; eth_drv.c assumes there is at least a header there.
+ (i82559_recv): Also be more careful and ASSERTive about -ve buffer
+ sizes; be more defensive about sglists. [CASE 104206]
+
+2000-07-26 Gary Thomas <gthomas@redhat.com>
+
+ * src/if_ebsa285.c: Update for new eth_drv interfaces.
+
+2000-07-18 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (i82559_poll): Fill in the flesh of this, it
+ just calls ISR and DSR repeatedly.
+ (i82559_start): Look in the device record for promiscuous mode
+ flag; it should be passed though the common layer, but it's not
+ [yet] - this change from Andrew Lunn/ASCOM. Also a fix and delay
+ to the promisc mode code per se.
+
+2000-07-17 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (i82559_poll): New function, just to fill in
+ the interface record; not used.
+
+2000-06-27 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl: Add sesquipedalian option
+ CYGDBG_DEVS_ETH_ARM_EBSA285_KEEP_82559_STATISTICS in (now)
+ component CYGDBG_DEVS_ETH_ARM_EBSA285_KEEP_STATISTICS to control
+ keeping (well, harvesting really) the i82559's internal stats.
+ Reputedly, it doesn't service the net whilst this is happening, so
+ it could be viewed a bad thing. Hence the option.
+
+ * include/ebsa285_info.h: Only describe the I82559_COUNTERS
+ i82559_counters[2]; structs if full stats are to be kept.
+
+ * src/if_ebsa285.c (update_statistics): Only include this if full
+ stats are to be kept.
+
+2000-06-27 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (ResetRxRing): Re-do the management of the
+ RxRing; have an end-of-list flag (EL) in the last entry, and as
+ you unload filled slots, drag it round after you.
+
+2000-06-14 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl: Add option to control statistics
+ keeping.
+
+ * include/ebsa285_info.h: Act on it.
+
+2000-06-13 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl: Properly include the new header
+ file and define symbols to allow client code to get at it without
+ knowing the particular device driver name.
+
+ * include/ebsa285_info.h: New file: export various statistics
+ information about the driver for use by monitoring and
+ network-management systems. This requires exposing the
+ (otherwise) internal structures of the driver.
+
+ * src/if_ebsa285.c: remove a lot of structure definitions &c that
+ are now necessarily in the new header; add a couple of new
+ routines which provide status and update statistics from the
+ device into memory; tidy up control of whether stats-keeping is
+ enabled.
+
+2000-06-06 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl (define_proc): Add #define of
+ CYGDAT_DEVS_ETH_DESCRIPTION in the config file for information.
+
+2000-05-12 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * tests/test_net_realtime.h (tnr_print_activity): New routine to
+ check the system is working, tidied up the API. It works!
+
+2000-05-11 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl: Added export of the test header
+ below, and config opts for controlling EEPROM writing and all the
+ status chatter as the device starts up.
+
+ * src/if_ebsa285.c: Reworked the code for reading and setting the
+ EEPROM that holds the MAC address. This is very ugly, but now
+ more reliable. Also tidied up printing cruft with neater
+ configury, and made it an option (for safety) whether it's
+ possible to write the EEPROM at all.
+
+ * tests/test_net_realtime.h: New file - it is intended to be used
+ by networking tests to verify that latency is not compromised by
+ the stack and driver. It's very platform specific, hence the
+ location in here. This is a preliminary version only.
+
+2000-04-27 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c: A serious re-write. This cuts out a lot of
+ code from the old version and improves the performance greatly.
+
+ The cruft was mainly doing lots of explicit event communication
+ between the ISR and DSR, when in fact all the state needed is
+ present in the tx/rx rings. So both ISRs and DSRs regard their
+ call as an opportunity to progress everything they can, rather
+ than only dealing with one interrupt cause at a time; the
+ connection between them is now rather looser.
+
+ Interrups can now be re-enabled after the ISR (in other words they
+ are not masked in the ISR), no need to wait for the DSR, but in
+ consequence some DSR code must mask/unmask intrs as it works.
+
+ The 82559 appears to be a little slow in reacting to commands and
+ state changes, so some interrupts were being lost - or persisting
+ beyond their desired life - so there's some kinda polling code to
+ deal with that also. We also rely on the foreground to kind of
+ poll in the same way, in the send/can_send calls - we know the
+ stack will re-try if necessary, though this is rare.
+
+ The driver now works (albeit at much reduced performance) with as
+ few as 6 rx and tx buffers - in other words the "queue full/out of
+ rx buffers" states have been tested and all is well. It works
+ generally fine with 8 buffers of each kind.
+
+ The mux ISR and DSR are now rather more polled than the old
+ versions; we just try to do things with both devices (if active)
+ by simply calling each unitary ISR/DSR respectively.
+
+ I also re-ordered some of the code, moving utilities to the end of
+ the file and grouping together Tx and Rx machines a bit better.
+
+2000-04-13 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c: Attribution to Ron Spence, Pacific Softworks
+ added as a contributor.
+
+2000-04-07 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * ecos.db: Re-organize device packages. This is a massive change
+ involving deleting all the sources for serial and ethernet drivers
+ from where they used to live in
+ packages/io/serial/current/src/ARCH/PLATFORM.[ch]
+ packages/net/drivers/eth/PLATFORM/current/src/...
+ and reinstating them in
+ packages/devs/serial/ARCH/PLATFORM/current/src/...
+ packages/devs/eth/ARCH/PLATFORM/current/src/...
+
+ All these new packages are properly defined in ecos.db, and are
+ all of type "hardware" so that a "target" can grab them.
+
+ This directory layout is descriptive of the devices we have right
+ now, arch and platform are separate levels just to make it easier
+ to navigate in the filesystem and similar to the HAL structure in
+ the filesystem.
+
+ It is *not* prescriptive of future work; for example, the mythical
+ common highly-portable 16550 serial driver which works on many
+ targets would be called "devs/serial/s16550/current", or a serial
+ device for a particular board (cogent springs to mind) that can
+ work with different CPUs fitted is "devs/serial/cogent/current".
+
+ Changelogs have been preserved and replicated over all the new
+ packages, so that no history is lost.
+
+ The contents of individual source files are unchanged; they build
+ in just the same emvironment except for a very few cases where the
+ config file name changed in this movement.
+
+ Targets in ecos.db have been redefined to bring in all relevant
+ hardware packages including net and serial drivers (but the newly
+ included packages are only active if their desired parent is
+ available.)
+
+ The names of CDL options (and their #defines of course) stay the
+ same for the serial drivers, for backward compatibility.
+
+ * templates/*/current.ect: these have had CYGPKG_IO_SERIAL added
+ rather than it being in (almost) all target definitions.
+
+2000-03-29 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (i82559_recv): Be happy with NULLs in the
+ SGlist; it means the caller is out of memory so drop the packet on
+ the floor. Also remove a completely redundant test.
+
+2000-03-06 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (i82559_can_send): Update net driver to new
+ interface style. This is incomplete wrt promiscuous mode, but
+ that's probably about all.
+
+2000-02-14 Gary Thomas <gthomas@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl: Update CDL to indicate multiple
+ interface support.
+
+2000-02-14 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (pci_init_find_82559s): Tidy comments somewhat
+ and set debug and stats collecting defines to most friendly
+ settings.
+
+2000-02-10 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c (PacketRxReady): Fix bug; current descriptor
+ was not being write back for the callback to use. Hence asserts
+ on state of rfd were firing in busy times - that leading rfd had
+ already been drained.
+
+ Also rationalized meaning of DEBUG printy symbols a bit - it's now
+ chatty during startup/foreground manipulations but not in any
+ performance related activities ie. rx or tx.
+
+2000-02-09 John Dallaway <jld@cygnus.co.uk>
+
+ * cdl/ebsa285_eth_drivers.cdl:
+
+ Reparent under CYGPKG_NET_ETH_DRIVERS and tidy display strings.
+
+2000-02-08 Hugo Tyson <hmt@cygnus.co.uk>
+
+ * src/if_ebsa285.c: New File.
+ * cdl/ebsa285_eth_drivers.cdl: New File.
+
+ Initial Checkin of EBSA285 Ethernet driver.
+
+ It's one monolithic file at present, and should be split up into a
+ more generic Intel 82559 driver plus platform-specific parts (PCI
+ et al) plus eCos/Red-Hat-BSD-stack parts.
+
+//===========================================================================
+// ####GPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+//
+// This program 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.
+//
+// This program 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. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the
+// Free Software Foundation, Inc., 51 Franklin Street,
+// Fifth Floor, Boston, MA 02110-1301, USA.
+// -------------------------------------------
+// ####GPLCOPYRIGHTEND####
+//===========================================================================
+
+
+
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