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38 .Nd "RealTek 8139C+/8169/8169S/8110S PCI Ethernet adapter driver"
45 driver provides support for various NICs based on the RealTek RTL8139C+,
46 RTL8169, RTL8169S and RTL8110S PCI Ethernet controllers.
48 NICs based on the 8139C+ are capable of 10 and 100Mbps speeds over CAT5
50 NICs based on the 8169, 8169S and 8110S are capable of 10, 100 and
53 All NICs supported by the
55 driver have TCP/IP checksum offload and hardware VLAN tagging/insertion
56 features, and use a descriptor-based DMA mechanism.
58 capable of TCP large send (TCP segmentation offload).
60 The 8139C+ is a single-chip solution combining both a 10/100 MAC and PHY.
61 The 8169 is a 10/100/1000 MAC only, requiring a GMII or TBI external PHY.
62 The 8169S and 8110S are single-chip devices containing both a 10/100/1000
63 MAC and 10/100/1000 copper PHY.
64 Standalone 10/100/1000 cards are available
65 in both 32-bit PCI and 64-bit PCI models.
66 The 8110S is designed for
67 embedded LAN-on-motherboard applications.
69 The 8169, 8169S and 8110S also support jumbo frames, which can be configured
70 via the interface MTU setting.
71 The MTU is limited to 7422, since the chip cannot transmit larger frames.
72 Selecting an MTU larger than 1500 bytes with the
74 utility configures the adapter to receive and transmit jumbo frames.
78 driver supports the following media types:
79 .Bl -tag -width ".Cm 10baseT/UTP"
81 Enable autoselection of the media type and options.
82 The user can manually override
83 the autoselected mode by adding media options to
90 option can also be used to select either
96 Set 100Mbps (Fast Ethernet) operation.
100 option can also be used to select either
106 Set 1000baseTX operation over twisted pair.
107 The RealTek gigE chips support 1000Mbps in
110 .\" .It Cm 1000baseSX
111 .\" Set 1000Mbps (Gigabit Ethernet) operation.
116 .\" modes are supported.
121 driver supports the following media options:
122 .Bl -tag -width ".Cm full-duplex"
124 Force full duplex operation.
126 Force half duplex operation.
129 For more information on configuring this device, see
134 driver supports RealTek RTL8139C+, RTL8169, RTL8169S and RTL8110S
135 based Fast Ethernet and Gigabit Ethernet adapters including:
139 Alloy Computer Products EtherGOLD 1439E 10/100 (8139C+)
141 Compaq Evo N1015v Integrated Ethernet (8139C+)
143 Corega CG-LAPCIGT Gigabit Ethernet (8169S)
145 Gigabyte 7N400 Pro2 Integrated Gigabit Ethernet (8110S)
147 LevelOne GNC-0105T (8169S)
149 PLANEX COMMUNICATIONS Inc.\& GN-1200TC (8169S)
151 Xterasys XN-152 10/100/1000 NIC (8169)
155 .It "re%d: couldn't map memory"
156 A fatal initialization error has occurred.
157 .It "re%d: couldn't map ports"
158 A fatal initialization error has occurred.
159 .It "re%d: couldn't map interrupt"
160 A fatal initialization error has occurred.
161 .It "re%d: no memory for softc struct!"
162 The driver failed to allocate memory for per-device instance information
163 during initialization.
164 .It "re%d: failed to enable memory mapping!"
165 The driver failed to initialize PCI shared memory mapping.
167 happen if the card is not in a bus-master slot.
168 .It "re%d: no memory for jumbo buffers!"
169 The driver failed to allocate memory for jumbo frames during
171 .It "re%d: watchdog timeout"
172 The device has stopped responding to the network, or there is a problem with
173 the network connection (cable).
184 .%T RealTek Semiconductor RTL8139C+, RTL8169, RTL8169S and RTL8110S datasheets
185 .%O http://www.realtek.com.tw/
190 device driver first appeared in
195 driver was written by
196 .An Bill Paul Aq wpaul@windriver.com .
198 The Xterasys XN-152 32-bit PCI NIC, which uses the RTL8169 MAC and
199 Marvell 88E1000 PHY, has a defect that causes DMA corruption
200 if the board is plugged into a 64-bit PCI slot.
202 lies in the board design, not the chip itself: the PCI REQ64# and ACK64#
203 lines should be pulled high, but they are not.
204 The result is that the
205 8169 chip is tricked into performing 64-bit DMA transfers even though
206 a 64-bit data path between the NIC and the bus does not actually exist.
208 Unfortunately, it is not possible to correct this problem in software,
209 however it is possible to detect it.
212 driver is loaded, it will run a diagnostic routine designed to
213 validate DMA operation by placing the chip in digital loopback mode
214 and initiating a packet transmission.
215 If the card functions properly,
216 the transmitted data will
217 be echoed back unmodified.
218 If the echoed data is corrupt, the driver
219 will print an error message on the console and abort the device attach.
221 user should insure the NIC is installed in a 32-bit PCI slot to
224 The RealTek 8169, 8169S and 8110S chips appear to only be capable of
225 transmitting jumbo frames up to 7.5K in size.