Commit Graph

7 Commits

Author SHA1 Message Date
Bill Paul
1b2451269c Increase the size of the tx and rx rings from 10 to 20 descriptors
and increase the tx interrupt threshold to 4. This fixes performance
problems on slower systems.

Also fix a mind-o in the rx ring init routine: I used the TX
constant instead of the RX. This isn't a problem as long as the
rings are the same size, but if they aren't hijinx will ensue.
1998-10-31 17:23:48 +00:00
Bill Paul
b078a935b6 Overhaul the ThunderLAN driver. This update includes the following
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
1998-09-23 05:08:54 +00:00
Bill Paul
c3ed41584c Updates for the ThunderLAN driver:
- probe for PHYs by checking the BMSR (phy status) register instead
  of the vendor ID register.

- fix the autonegotiation routine so that it figures out the autonegotiated
  modes correctly.

- add tweaks to support the Olicom OC-2326 now that I've actually had
  a chance to test one

	o Olicom appears to encode the ethernet address in the EEPROM
	  in 16-bit chunks in network byte order. If we detect an
	  Olicom card (based on the PCI vendor ID), byte-swap the station
	  address accordingly.

	  XXX The Linux driver does not do this. I find this odd since
	  the README from the Linux driver indicates that patches to
	  support the Olicom cards came from somebody at Olicom; you'd
	  think if anyone would get that right, it'd be them. Regardless,
	  I accepted the word of the disgnoatic program that came bundled
	  with the card as gospel and fixed the attach routine to make
	  the station address match what it says.

	o The version of the 2326 card that I got for testing is a
	  strange beast: the card does not look like the picture on
	  the box in which it was packed. For one thing, the picture
	  shows what looks like an external NS 83840A PHY, but the
	  actual card doesn't have one. The card has a TNETE100APCM
	  chip, which appears to have not only the usual internal
	  tlan 10Mbps PHY at MII address 32, but also a 10/100 PHY
	  at MII address 0. Curiously, this PHY's vendor and device ID
	  registers always return 0x0000. I suspect that this is
	  a mutant version of the ThunderLAN chip with 100Mbps support.
	  This combination behaves a little strangely and required the
	  following changes:

		- The internal PHY has to be enabled in tl_softreset().
		- The internal PHY doesn't seem to come to life after
		  detecting the 100Mbps PHY unless it's reset twice.
		- If you want to use 100Mbps modes, you have to isolate
		  the internal PHY.
		- If you want to use 10Mbps modes, you have to un-isolate
		  the internal PHY.

	The latter two changes are handled at the end of tl_init(): if
	the PHY vendor ID is 0x0000 (which should not be possible if we
	have a real external PHY), then tl_init() forces the internal
	PHY's BMCR register to the proper values.
1998-08-03 01:33:12 +00:00
Bill Paul
fb1305c426 Declare pointers to CSR register space to be volatile. This seems to
cure the problems I was having with interrupts not being acknowledged
on time. This fixes a problem I observed where starting two ping -f
processes at 10Mbps would cause an adapter check due to TX GO commands
being issued before TXEOC interrupts were being acked.

Also fix a small problem with tl_start(): the mechanism I was using
to queue new packets onto the TX chain was bogus.

Change adapter check handler so that it resets card state after
tl_softreset() is stored.

Moved all EEPROM-related macro definitions into if_tlreg.h.

Don't allow an autoneg session to start until after the TX queue has
been drained, and don't transmit anything until after the autoneg
session is complete.

Also add support for two more Compaq ThunderLAN-based cards, and three
cards from Olicom which also use the ThunderLAN chip. The only thing
different about the Olicom cards is that they store the station address
at a different location within the EEPROM.
1998-07-13 18:15:48 +00:00
Bill Paul
7e15fd7974 Remove 2.2.x compatibility code and #ifdefs. Once the shakedown period
in -current is over, I'll put a 2.2.x specific version in the RELENG_2_2
branch. If somebody wants a 2.2 version of this driver now, they can check
out the previous version from CVS or ask me via e-mail.

Gee people, I didn't mean to stir up such a controversy. I just wanted
to make sure I could get this thing to work with both kernel versions
and didn't want to have to maintain two separate copies. All ya hadda
do was ask. :)
1998-05-22 15:32:22 +00:00
Jordan K. Hubbard
a185a42f91 Don't use __FreeBSD_version explicitly - none of the other
drivers here do and it also blows up in building GENERIC during
a release build if you try and include <osreldate.h> (which shot
my SNAP dead - argh!).  Use __FreeBSD__ instead.
1998-05-21 16:24:05 +00:00
Bill Paul
13c92998a9 Add Texas Instruments TNET100 'ThunderLAN' PCI NIC driver to the tree.
This driver supports the following cards/integrated ethernet controllers:

Compaq Netelligent 10, Compaq Netelligent 10/100, Compaq Netelligent 10/100,
Compaq Netelligent 10/100 Proliant, Compaq Netelligent 10/100 Dual Port,
Compaq NetFlex-3/P Integrated, Compaq NetFlex-3/P Integrated,
Compaq NetFlex 3/P w/ BNC, Compaq Deskpro 4000 5233MMX.

It should also support Texas Instruments NICs that use the ThunderLAN
chip, though I don't have any to test. If you've got a card that uses
the ThunderLAN chip but isn't listed in the PCI vendor/product list in
if_tl.c, try adding it and see what happens.

The driver supports any MII compliant PHY at 10 or 100Mbps speeds in
full or half duplex. (Those I've personally tested are the National
Semiconductor DP83840A (Prosignia server), the Level 1 LXT970 (Deskpro
desktop), and the ThunderLAN's internal 10baseT PHY.) Autonegotiation,
hardware multicast filtering, BPF and ifmedia support are included.

This chip is pretty fast; Prosignia servers with NCR SCSI, ThunderLAN
ethernet and FreeBSD make for a nice combination.
1998-05-21 03:19:56 +00:00