diff options
Diffstat (limited to 'share/man/man4/re.4')
| -rw-r--r-- | share/man/man4/re.4 | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/share/man/man4/re.4 b/share/man/man4/re.4 index 2aab010c554d..f1632730b1c4 100644 --- a/share/man/man4/re.4 +++ b/share/man/man4/re.4 @@ -54,26 +54,30 @@ Compaq Evo N1015v Integrated Ethernet (8139C+) .It Gigabyte 7N400 Pro2 Integrated Gigabit Ethernet (8110S) .It -PLANEX COMMUNICATIONS Inc. GN-1200TC (8169S) +PLANEX COMMUNICATIONS Inc.\& GN-1200TC (8169S) .It Xterasys XN-152 10/100/1000 NIC (8169) .El .Pp NICs based on the 8139C+ are capable of 10 and 100Mbps speeds over CAT5 -cable. NICs based on the 8169, 8169S and 8110S are capable of 10, 100 and +cable. +NICs based on the 8169, 8169S and 8110S are capable of 10, 100 and 1000Mbps operation. .Pp All NICs supported by the .Nm driver have TCP/IP checksum offload and hardware VLAN tagging/insertion -features, and use a descriptor-based DMA mechanism. They are also +features, and use a descriptor-based DMA mechanism. +They are also capable of TCP large send (TCP segmentation offload). .Pp The 8139C+ is a single-chip solution combining both a 10/100 MAC and PHY. The 8169 is a 10/100/1000 MAC only, requiring a GMII or TBI external PHY. The 8169S and 8110S are single-chip devices containing both a 10/100/1000 -MAC and 10/100/1000 copper PHY. Standalone 10/100/1000 cards are available -in both 32-bit PCI and 64-bit PCI models. The 8110S is designed for +MAC and 10/100/1000 copper PHY. +Standalone 10/100/1000 cards are available +in both 32-bit PCI and 64-bit PCI models. +The 8110S is designed for embedded LAN-on-motherboard applications. .Pp The 8169, 8169S and 8110S also support jumbo frames, which can be configured @@ -183,21 +187,27 @@ driver was written by .Sh BUGS The Xterasys XN-152 32-bit PCI NIC, which uses the RTL8169 MAC and Marvell 88E1000 PHY, has a defect that causes DMA corruption -if the board is plugged into a 64-bit PCI slot. The defect +if the board is plugged into a 64-bit PCI slot. +The defect lies in the board design, not the chip itself: the PCI REQ64# and ACK64# -lines should be pulled high, but they are not. The result is that the +lines should be pulled high, but they are not. +The result is that the 8169 chip is tricked into performing 64-bit DMA transfers even though a 64-bit data path between the NIC and the bus does not actually exist. .Pp Unfortunately, it is not possible to correct this problem in software, -however it is possible to detect it. When the +however it is possible to detect it. +When the .Nm driver is loaded, it will run a diagnostic routine designed to validate DMA operation by placing the chip in digital loopback mode -and initiating a packet transmission. If the card functions properly, +and initiating a packet transmission. +If the card functions properly, the transmitted data will -be echoed back unmodified. If the echoed data is corrupt, the driver -will print an error message on the console and abort the device attach. The +be echoed back unmodified. +If the echoed data is corrupt, the driver +will print an error message on the console and abort the device attach. +The user should insure the NIC is installed in a 32-bit PCI slot to avoid this problem. .Pp |