Commit Graph

19 Commits

Author SHA1 Message Date
John Polstra
515d4440fe Add facilities for tuning the "em" driver's interrupt delays without
recompiling the driver.  See the comments near the top of "if_em.h"
for descriptions of these delays.  Four new loader tunables control
the system-wide default values:

    hw.em.tx_int_delay
    hw.em.rx_int_delay
    hw.em.tx_abs_int_delay
    hw.em.rx_abs_int_delay

The tunables are specified in microseconds.  The valid range is
0-67108 usec., and 0 means that the timer is disabled.

There are also four new sysctls (actually, a set of four for each
"em" device in the system) to query and change the interrupt delays
after the system is up:

    hw.em0.tx_int_delay
    hw.em0.rx_int_delay
    hw.em0.tx_abs_int_delay (not present for 82542/3/4 adapters)
    hw.em0.rx_abs_int_delay (not present for 82542/3/4 adapters)

It seems to be OK to change these values even while the adapter is
passing traffic.

Approved by:	Prafulla Deuskar <pdeuskar@FreeBSD.ORG>
MFC after:	4 weeks
2003-08-01 17:33:59 +00:00
John Polstra
c7cc6a4d9f Correct comments to indicate that the EM_RADV and EM_TADV parameters
are not applicable to the 82544.
2003-07-17 19:02:34 +00:00
Maxime Henrion
dbe4792865 The em(4) driver has been converted to busdma and doesn't use
vtophys() anymore, so remove the alpha hack which defines
vtophys() to alpha_XXX_dmamap().
2003-07-04 10:15:16 +00:00
Prafulla Deuskar
d30350e524 Add support for Quad port adapter
Add sysctl's to display statistics/debug_info
Set WAIT_FOR_AUTONEG_DEFAULT to zero by default
Increment packet in/out statistics inline instead of every two seconds.

MFC after:	3 days
2003-06-05 17:51:38 +00:00
Prafulla Deuskar
bc93b4de0e - Fix breakage on PAE enabled kernel
- Don't use vtophys when you can get physical address using bus_dma API

Submitted by:	jake (Jake Burkholder)
2003-05-03 07:35:47 +00:00
Prafulla Deuskar
a9cbe07958 - Bus DMA'fy the driver
- Use htole* macros where appropriate so that the driver could work on non-x86 architectures
- Use m_getcl() instead of MGETHDR/MCLGET macros
Submitted by:	sam (Sam Leffler)
2003-05-02 21:17:08 +00:00
Prafulla Deuskar
55cbc7f8bd Added support for 82541 and 82547 based adapters.
- These have Intel gigabit PHY
 - 82547 uses CSA interface

MFC after:	1 week
2003-03-21 21:47:31 +00:00
Prafulla Deuskar
a58e485d36 - Move to array based indexing for TX/RX descriptor/buffer management
- Added support for ITR (interrupt throttle register). This feature is available on
adapters based on 82545 and above
- Fixed problem with vlan support when traffic has priority bits set. (kern/45907)

PR:			kern/45907
MFC after:		1 week
2002-12-23 19:11:23 +00:00
Sam Leffler
673d91916d network interface driver changes:
o don't strip the Ethernet header from inbound packets; pass packets
  up the stack intact (required significant changes to some drivers)
o reference common definitions in net/ethernet.h (e.g. ETHER_ALIGN)
o track ether_ifattach/ether_ifdetach API changes
o track bpf changes (use BPF_TAP and BPF_MTAP)
o track vlan changes (ifnet capabilities, revised processing scheme, etc.)
o use if_input to pass packets "up"
o call ether_ioctl for default handling of ioctls

Reviewed by:	many
Approved by:	re
2002-11-14 23:54:55 +00:00
Prafulla Deuskar
1d966d27b1 - Set RS (Report Status) bit on all descriptors of a packet instead of just the last one.
- Set RDTR to zero by default instead of 28.
- Fixed a problem with TX hangs with jumbo frames when number of fragments in the mbuf chain
is large.
- Added support for 82540EP based cards.

MFC after:	3 days
2002-11-08 18:14:17 +00:00
Prafulla Deuskar
587edcdc95 Corrected license in the source files. It should say "MUST" instead of "MAY".
MFC after:	2 days
2002-09-24 16:27:59 +00:00
Prafulla Deuskar
90fd36aac8 Back out TX/RX descriptor/buffer management changes from earier commit.
We are having panics with the driver under stress with jumbo frames.
Unfortunately we didnot catch it during our regular test cycle.
I am going to MFC the backout immediately.
2002-08-26 18:59:16 +00:00
Prafulla Deuskar
a237f70d50 TX/RX descriptor/buffer management changes.
Use array based scheme instead of queueing macros.

Submitted by:	Luigi Rizzo (rizzo@icir.org)
MFC after:	3 days
2002-08-21 23:44:15 +00:00
Prafulla Deuskar
802baa70eb - Use IO mode to reset the controller (82544 and beyond)
- Read the Mac address only once during attach.
  (This fixes the failover issue observed using the bonding driver)

MFC after:	3 days
2002-07-16 16:55:03 +00:00
Prafulla Deuskar
a7fabc2b60 Added support for 82545EM and 82546EB based adapters.
Added Vlan support.

MFC after:	1 week
2002-06-03 22:30:51 +00:00
Prafulla Deuskar
076c4c2633 Added support for 82540EM based cards.
Cosmetic changes to make code more unix-like.

MFC after:	1 week
2002-04-06 00:36:53 +00:00
Prafulla Deuskar
a59716d2d8 - Added support for receive in multiple
descriptors. This simplifies code for jumbo frames.
- Cleaned up coding conventions to make code more unix-like.
- Cleaned up code in if_em_fxhw.c and if_em_phy.c.
  Added relevant comments.

MFC after:	1 week
2002-02-13 18:19:27 +00:00
Prafulla Deuskar
8bf402ad91 -Remove unneeded include stddef.h
-Modify modules Makefile so that em driver compiles only on
i386 platform. (Alpha not supported yet)

PR:	kern/32993
MFC after:	1
2001-12-20 17:55:49 +00:00
Prafulla Deuskar
e6770f4c46 This is the first commit of the Intel gigabit driver for
PRO/1000 cards.

Submitted by:Prafulla Deuskar
Reviewed by: Paul Saab
MFC after:1 week
2001-12-02 07:37:17 +00:00