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Commit Graph

20 Commits

Author SHA1 Message Date
Brooks Davis
bbce7eba7f IFT_8021_VLAN -> IFT_L2VLAN per if_vlan_var.h rev 1.9. With this change
LINT compiles, but doesn't link.
2001-07-25 00:19:59 +00:00
Bill Paul
248fa967ca Change the interrupt handler a bit so that we call the nge_rxeof() handler
when we get an RX_ERR interrupt rather than the nge_rxeoc() handler. The
rxeoc (end of channel) handler attempts to reinitialize the whole NIC,
which we don't want to do if we only received a bad packet.
2001-07-16 16:35:09 +00:00
Bill Paul
962315f66f Two optimizations:
1) Bite the bullet, and allow unaligned accesses without buffer copies
   on the i386 platform. According to some tests run by Andrew Gallatin,
   the buffer copy performance hit is greater than the unaligned access
   performance hit (especially with jumbo frames). We still need to copy
   everywhere else.

2) Enable interrupt moderation with a 100us timeout.

Submitted by: Andrew Gallatin <no longer at duke.edu>
MFC after: 1 week
2001-07-10 23:07:15 +00:00
Bill Paul
75ff968cd5 Apply patch supplied by Jonathan Chen: use the correct arguments to
pci_enable_io(). We need to use SYS_RES_IOPORT/SYS_RES_MEMORY instead
of PCIM_CMD_PORTEN/PCIM_CMD_MEMEN.
2001-07-09 17:58:42 +00:00
Bill Paul
2ce0498bd7 Do not set the MODE_1000 bit unless we actually have a gigabit link.
Previously, I had the MODE_1000 bit in the global config register set
unconditionally, which was wrong: we have to turn it off if we have
a 10/100 link. This is now handled in the nge_miibus_statchg() routine.

Discovered by: Nathan Binkert <binkertn@eecs.umich.edu>

(Note: this commit is being done from JFK airport. :P )
2001-07-08 16:24:01 +00:00
Bosko Milekic
f5eece3fb9 Change m_devget()'s outdated and unused `offset' argument to actually mean
something: offset into the first mbuf of the target chain before copying
the source data over.

Make drivers using m_devget() with a first argument "data - ETHER_ALIGN"
to use the offset argument to pass ETHER_ALIGN in. The way it was previously
done is potentially dangerous if the source data was at the top of a page
and the offset caused the previous page to be copied (if the
previous page has not yet been appropriately mapped).

The old `offset' argument in m_devget() is not used anywhere (it's always
0) and dates back to ~1995 (and earlier?) when support for ethernet trailers
existed. With that support gone, it was merely collecting dust.

Tested on alpha by: jlemon
Partially submitted by: jlemon
Reviewed by: jlemon
MFC after: 3 weeks
2001-06-20 19:48:35 +00:00
Bill Paul
7437599f41 Fix some memory bugs with regard to jumbo buffers. I made a mistake when
converting from the old external mbuf buffer code to the new (with the
MEXTADD() macro). Also free free list memory correctly in
foo_free_jumbo_mem() routines: grab the head of the list, then
remove it, _then_ free() it.

This fixes the memory corruption problem I've been chasing in the level 1
driver.
2001-06-18 22:04:40 +00:00
Bill Paul
80782fbf93 Mind-o in last commit: s/==/>=/ when checking MTU size. *blush* 2001-06-16 04:02:37 +00:00
Bill Paul
cb2f755c7f Fix the last serious bug I've been chasing:
The DP83820/83821 has an undocumented limitation concerning jumbo frames
and TX checksum offload. In order for TX checksum offload to work, the
outgoing frame must fit entirely within the TX FIFO, which is 8192 bytes
in size. This isn't a problem, until you try to send a 9000-byte frame,
at which point the TX DMA engine goes to sleep. It turns out that if
you want to send a jumbo frame larger than 8170 bytes (8192 - 64), you
have to turn off the TX checksum support.

As a workaround, I changed nge_ioctl() so that if the user selects an
MTU larger than 8152 bytes, we clear the if_hwassist flags. The flags
will be set again once the MTU is reduced to a smaller value.
2001-06-16 03:38:44 +00:00
Bill Paul
c921560563 Turn TCP and UDP hardware RX checksumming back on. jlemon pointed out where
I'd gone wrong before: we have to set csum_data to 0xffff, not 0.
2001-06-15 19:02:55 +00:00
Bill Paul
1bacd83aea Fix TX bug: when using TCP/IP checksum offload on TX, we tell the chip
we want the checksums calculated on a per-packet basis using control bits
in the extsts field of the DMA descriptor structure. For TX, the chip
seems to want these bits set in the field of the first descriptor in
a fragment chain, not the last.
2001-06-15 18:43:19 +00:00
Bill Paul
23d3a203ad - Remember to set the 'extsts enable' bit in the CFG register to enable the
use of the extsts field in DMA descriptors. We need this to tell the chip
  to calculate TCP/IP checksums in hardware on a per-packet basis.

- Fix the unions in DMA descriptor structures. Breakage on alpha led
  me to realize I'd done it wrong the first time.
2001-06-06 22:16:23 +00:00
Bill Paul
765a54f4c9 Disable extra TCP/UCP checksum checking in nge_rxeof() for now. 2001-06-06 19:17:10 +00:00
Bill Paul
2195de46d3 Per jlemon: add code to nge_rxeof() to allow verification of TCP and
UDP checksums too, not just IP. The chip only tells us if the checksum
is ok, it does not give us a copy of the partial checksum for later
processing. We have to deal with this the right way, but we can deal
with it.
2001-05-29 22:14:03 +00:00
Bill Paul
01702579c4 Fix mind-o in nge_rxeof(): I used CSUM_IP_CHECKED twice instead of
CSUM_IP_CHECKED|CSUM_IP_VALID.
2001-05-29 21:44:45 +00:00
Bill Paul
065a7922df Fix instance of (struct ti_softc *) that should have been
(struct nge_softc *), which the compiler never complained about.
I guess it doesn't matter, a pointer is a pointer, but looked weird
to me.
2001-05-15 22:19:50 +00:00
Bill Paul
ddde4ea967 Adjust the descriptor structures a little by making the software parts
be unions with enough padding to make sure they always end up being
a multiple of 8 bytes in size, since the 83820/83821 chips require
descriptors to be aligned on 64-bit boundaries. I happened to get it
right for the 32-bit descriptor/x86 case, but botched everything else.
Things should work properle on 32-bit/64-bit platforms now.

Note that the 64-bit descriptor format isn't being used currently.
2001-05-15 21:42:43 +00:00
Bill Paul
5da751e46c Unbreak release. *sigh* 2001-05-12 19:51:40 +00:00
Bill Paul
e39cd3b251 It's vlan.h, not opt_vlan.h. 2001-05-11 20:55:31 +00:00
Bill Paul
ce4946daa5 Add support for gigabit ethernet cards based on the NatSemi DP83820
and DP83821 gigabit ethernet MAC chips and the NatSemi DP83861 10/100/1000
copper PHY. There are a whole bunch of very low cost cards available with
this chipset selling for $150USD or less. This includes the SMC9462TX,
D-Link DGE-500T, Asante GigaNIX 1000TA and 1000TPC, and a couple cards
from Addtron.

This chip supports TCP/IP checksum offload, VLAN tagging/insertion.
2048-bit multicast filter, jumbograms and has 8K TX and 32K RX FIFOs.
I have not done serious performance testing with this driver. I know
it works, and I want it under CVS control so I can keep tabs on it.
Note that there's no serious mutex stuff in here yet either: I need
to talk more with jhb to figure out the right way to do this. That
said, I don't think there will be any problems.

This driver should also work on the alpha. It's not turned on in
GENERIC.
2001-05-11 19:56:39 +00:00