this myself for ages, but wasn't able to get any feedback from the people
that I sent it to for testing.
Guy Helmer <ghelmer@scl.ameslab.gov> has given it a shot (before getting on
a plane, thanks!) and it appears to stop his reproducable page fault panic
in the testing he was able to do.
This is a 100BaseFX board with SC fiber media connectors. I don't actually
have one of these but I've been told it works with the xl driver.
Submitted by: Jason Wright from the openbsd group
Disable DPARCKEN in the DSCOMMAND0 register on the aic7890/91/96/97.
Parity checking is broken for some chip/MB combinations and this
is the work around recommended by Adaptec.
dpt_pci.c:
Remove a superflous '{' that prevented DPT_ALLOW_MEMIO from working.
pcireg.h:
Add a definition for Parity Error Reponse bit in the PCI Space
command register.
routines are necessary to allow the use of certain types of hardware on
the alpha, particularly a Myrinet card.
Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
memory mapped mode. There are some laptop docking stations with
built-in tlan chips where memory mapped mode doesn't work correctly.
Pointed out by: jmb
the OpenBSD group to fix a problem with the default ifmedia not being
set properly in some cases with a 3c905B, leading to a panic in ifmedia_set().
Also apply a patch to force the transmit start routine to check the
transmitter to make sure it isn't wedged if the outbound tx queue appears
full. This seems to cure some problems with 'watchdog timeout' errors
cropping up in some cases. I tried to do this before by checking for the
IFF_OACTIVE flag on entry to xl_start(), but if the IFF_OACTIVE flag is
set, ether_output() won't even call xl_start(). It should work now.
Lastly, increase the size of the TX queue from 10 descriptors to 16 to
hopefully make it less likely that the TX queue will fill up.
PHYs in tl_attach(). This is mainly to suck away any possible stray
interrupts.
This prevents an intermittent problem on some systems where the adapter
probes correctly but yields a device timeout (and possible subsequent adapter
check) when configured. When I originally tested the driver, I ifconfig'ed
the interface after the system had already been booted and didn't notice
any problems, but when configuring the interface immediately at startup,
it would occasionally timeout and hang, until an adapter check interrupt
came along and reset things again. I'm not exactly sure if this is a
general problem of just something peculiar to this hardware (there are
three devices, including the tlan, all on IRQ 11) but the extra reset
shouldn't hurt anything. (It works fine with my 100Mbps Olicom adapter too.)
Thanks to Mark Taylor from Cybernet (mtaylor@cybernet.com) for allowing
me remote access to a Compaq system for debugging purposes.
changes:
- Cleaned up register access macros so that they work like the XL
driver macros (you can switch from PIO to memory-mapped mode
using a single #define -- default is still memory mapped mode).
The old 'struct overlayed onto the memory mapped register space'
cruft has been removed.
- Improved multicast filter code. The ThunderLAN has four entry
perfect filter table in addition to the 64-bit hash table: we need
one of the perfect filter entries for the station address, but we
can use the other three for multicast filtering. We arrange to put
the first three multicast group addresses in the perfect filter
slots so that commonly joined groups like the all hosts group and
the all routers group can be filtered without using up bits in the
hash table.
Note: in FreeBSD 3.0, multicast groups are stored in a doubly
linked list, however new entries are added at the head of the list
(thereby pushing existing entries down towards the tail). We want
to update the filter starting from the oldest entry to the newest
since the all hosts group is always joined first. This means we
really want to start from the tail of the list, not the head, but
to find the tail we first have to traverse the list all the way to
the end and then add entries working backwards. This is a bit of a
kludge and could be inefficient if the list is long.
- Cleaned up autonegotiation code: tl_autoneg() wasn't always setting
modes correctly.
- Cleaned up ifmedia update and status routines as well.
- Added tl_hardreset() routine to initialize the internal PHY according
to the ThunderLAN manual.
- Did away with the kludge where PHYs were treated as separate logical
interfaces. This didn't really work, especially in the case of the
newer Olicom 2326 adapters which use a Micro Linear ML6692 PHY which
provides only 100Mbps support, relying on the internal PHY for 10Mbps
support (both PHYs share the RJ45 port, with the 6692 doing all the
autonegotiation work). This kludge resulted from my misunderstanding
of the operation of the Compaq Netelligent Dual Port card (the tlan
manual mentions multiple channels, but in a different context; this
got me a little confused). The driver has been reported to work
correctly with the dual port card.
- Added dio_getbit/dio_setbit/dio_read/dio_write functions which carefully
set the ThunderLAN's indirectly accessed internal registers. This makes
the EEPROM reading code more reliable.
Hopefully I won't have to touch this again before 3.0 goes out the door.
I plan to import the 2.2.x version sometime this week.
Approved-by: jkh
insertion point into the start queue looking for entries to remove and
mark them with the 'skip' address, recording the entry furthest from the
insertion point that needs to be removed. We then go through a second
loop starting at the furthest entry to be removed and compress the start
queue. The old algorithm started at (old insert point + 1) and wrapped
through the whole queue which would end up moving the start position in
the queue out from under the nose of the scrip processor.
+ Change some messages about CCB memory allocation
+ Turn a failure to DMA map all of a transaction due to lack of
ISP queue entries into a requeue operation (instead of the
case where it had been treated the same as a DMA too big
operation).
+ put back splsoftvm around bus_dmamap_load calls.
+ cleanup (and fix a glaring bug) in the and of the dma setup
routine. Also, the dma setup routines either return CMD_QUEUED
(for success) or CMD_COMPLETE (for failure) or CMD_EAGAIN
(for requeuing for resource shortage reasons).
full condition or other error which requires us to purge the
controller's start queue of transactions for a particular device.
We were relying on the NCR CCB's program address to cause the
script engine to skip to the next entry in the queue even though
the CCB is freed (and its program address switched to the idle
loop) by this action. We now set the address in the start queue
to be the "skip" function directly.
transmitter is wedged. If so, try to unwedge it, process any descriptors
that might need to be free()d, then proceed.
- Disable the 'background' autonegotiation performed during bootstrap.
What happens currently is that the driver starts an autoneg session,
the sets a timeout in the ifnet structure and returns. Later, when the
timer expires, the watchdog routine calls the autoneg handler to check
the results of the session. The problem with this is that the session
may not complete until some point after we have started to mount NFS
filesystems, which can cause the mounts to fail. This is especially
troublesome if booting with an NFS rootfs: we need the interface up
and running before reaching the mountroot() code.
The default behavior now is to do the autoneg synchronously, i.e. wait
5 seconds for the autoneg to complete before exiting the driver attach
routine. People who want the old behavior can compile the driver with
XL_BACKGROUND_AUTONEG #defined. This has no effect on autoneg sessions
initiated by 'ifconfig xl0 media autoselect.'
This slows the probe down a little, but it's either that or botching
NFS mounts at bootup.
- If xl_setmode_mii() is called and there's an autoneg session in progress,
cancel it, _then_ set the modes.
and use this when masking/unmasking interrupts.
Maintain a mapping from (iopaic number, int pin) tuple to irq number,
and use this when configuring devices and programming the ioapics.
Previous code assumed that irq number was equal to int pin number, and
that the ioapic number was 0.
Don't let an AP enter _cpu_switch before all local apics are initialized.
generating a trap 12 panic. The code blindly assumed that in the event
of a transmit error, the packet that caused the error would still be
at the head of the driver's transmit queue (sc->xl_cdata.xl_tx_head).
However in the case of error 82 (which indicates that a transmit error
occurred after part of the transmit FIFO memory has been reclaimed)
this is not true: the TX queue has already been flushed, and the
pointer to the head of the queue is NULL, so trying to dereference
the pointer to find the transmit descriptor address causes a crash.
The code now checks for a NULL pointer before trying to reload the
chip's download pointer register. There may still be error messages
printed warning of the transmit error, but no panic should occur.
Note that this eror code is only generated with "cyclone" chipsets
(3c900B, 3c905B, and presumeably the 3c980 server adapter). It should
only appear during periods of heavy traffic, probably only on
non-switched networks.
Problem reported by: Darcy Buskermolen <darcy@ok-connect.com>
XCVR value read from the EEPROM is completely wrong. I've had one report
of a 3c900 card that returns an xcvr value of 14, which is impossible
(the manual states that all vales above 8 are reserved). If the value
is out of the expe
Add PCI vendor ID for the 3c980-TX server adapter card, which apparently
also uses the cyclone chip. Graciously supplied Mats O Jansson
<maja@cntw.com>.
Also noted by Mats, the 10mpbs cyclone adapters should be named 3c900B,
not 3c905B. I haven't actually encountered a 10mbps only cyclone adapter
yet, nor anybody who has one, but this makes sense given the naming
scheme used for the older boomerang adapters.
