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For the default case, sets the lm_media member to LAN_MEDIA_UTP
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(media mode is unshielded twisted pair cable).
Determines whether lm_media evaluates to LAN_MEDIA_UTP.
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Calls WRITE_ACR to write to the address control register. The data to
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be written establishes the Ethernet unshielded twisted-pair cable as
the media.
Calls WRITE_CMD to write to the command port register. The data to be
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written is the window 4 diagnostic command bit (CMD_WINDOW4).
Calls the WRITE_MD macro to write data to the media type and status
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register. The data to be written consists of the original data from that
register but with the link beat enabled (MD_LBE) and the jabber enabled
(MD_JABE) bits set.
8.2.6 Setting a LAN Attribute
The following code shows how the el_init_locked( ) routine sets the LAN
media type attribute for enhanced hardware management (EHM) support:
lan_set_attribute(sc->ehm.current_val, NET_MEDIA_NDX,
Sets the LAN media type attribute for EHM support.
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8.2.7 Selecting Memory Mapping
The following code shows how the el_init_locked( ) routine selects
memory mapping. This task is specific to the 3Com 3C5x9 device.
if (ctlr->bus_hd->bus_type == BUS_PCMCIA) {
WRITE_CMD(sc, CMD_WINDOW0);
i = READ_CCR(sc);
if ((i & 0xc000) == 0x8000) {
WRITE_CMD(sc, CMD_WINDOW3);
i = sc->eeprom.icw & ~ (ASI_RS|ASI_RS|ASI_RSIZE8|ASI_RSIZE32|
i |= (ASI_PAR_11 | ASI_RSIZE32);
WRITE_DATA(sc, i);
}
}
If the if_el device driver operates on the PCMCIA bus, performs a
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read operation and a number of write operations to select the memory
mapping.
8.2.8 Resetting the Transmitter and Receiver Again
The following code shows how the el_init_locked( ) routine resets the
transmitter and receiver a second time. This task is specific to the 3Com
3C5x9 device. Make sure that you perform similar initialization tasks for
the hardware device that your network driver controls.
lan_media_strings[sc->lm_media]);
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ASI_PAR_35|ASI_PAR_13|ASI_PAR_11);
Implementing the Initialization Section 8–7
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