Subversion Repositories openrisc_2011-10-31

# ====================================================================
#
#       intel_i82544_eth_drivers.cdl
#
#       Intel 82544 ethernet driver
#
# ====================================================================
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# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      nickg, from i82559 original
# Original data:  hmt
# Contributors:   hmt, gthomas, jskov
# Date:           2001-10-25
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_DEVS_ETH_INTEL_I82544 {
    display       "Intel 82544 ethernet driver"
    description   "Ethernet driver for Intel 82544 Gigabit controller."

    parent        CYGPKG_IO_ETH_DRIVERS
    active_if     CYGPKG_IO_ETH_DRIVERS

    active_if     CYGINT_DEVS_ETH_INTEL_I82544_REQUIRED

    include_dir   cyg/devs/eth

    # SNMP demands to know stuff; this sadly makes us break the neat
    # abstraction of the device having nothing exported.
    include_files include/i82544_info.h
    # and tell them that it is available
    define_proc {
        puts $::cdl_system_header \
       "#define CYGBLD_DEVS_ETH_DEVICE_H <pkgconf/devs_eth_intel_i82544.h>"

        puts $::cdl_header "#include CYGDAT_DEVS_ETH_INTEL_I82544_CFG";
    }

    compile       -library=libextras.a if_i82544.c

    cdl_option CYGDBG_DEVS_ETH_INTEL_I82544_CHATTER {
        display "Prints ethernet device status info during startup"
        default_value 0
        description   "
            The ethernet device initialization code can print lots of info
            to confirm that it has found the devices on the PCI bus, read
            the MAC address from EEPROM correctly, and so on, and also
            displays the mode (10/100MHz, half/full duplex) of the
            connection."
    }

    cdl_option CYGNUM_DEVS_ETH_INTEL_I82544_DEV_COUNT {
        display "Number of supported interfaces."
        calculated    { CYGINT_DEVS_ETH_INTEL_I82544_REQUIRED }
        flavor        data
        description   "
            This option selects the number of PCI ethernet interfaces to
            be supported by the driver."
    }

    cdl_component CYGDBG_DEVS_ETH_INTEL_I82544_KEEP_STATISTICS {
        display "Keep Ethernet statistics"
        default_value 0
        description   "
            The ethernet device can maintain statistics about the network,
            specifically a great variety of error rates which are useful
            for network management.  SNMP for example uses this
            information.  There is some performance cost in maintaining
            this information; disable this option to recoup that."

        cdl_option CYGDBG_DEVS_ETH_INTEL_I82544_KEEP_82544_STATISTICS {
            display "Keep i82544 Internal statistics"
            default_value 1
            description   "
                The i82544 keeps internal counters, and it is possible to
                acquire these.  But the i82544 (reputedly) does not service
                the network whilst uploading the data to RAM from its
                internal registers.  If throughput is a problem, disable
                this option to acquire only those statistics gathered by
                software, so that the i82544 never sleeps."
        }
    }

    cdl_component CYGPKG_DEVS_ETH_INTEL_I82544_WRITE_EEPROM {
        display "SIOCSIFHWADDR records MAC address in EEPROM"
        default_value 0
        description   "
            The ioctl() socket call with operand SIOCSIFHWADDR sets the
            interface hardware address - the MAC address or ethernet
            address.  This option causes the new MAC address to be written
            into the EEPROM associated with the interface, so that the new
            MAC address is permanently recorded.  Doing this should be a
            carefully chosen decision, hence this option."
    }

    cdl_option CYGNUM_DEVS_ETH_INTEL_I82544_MAX_RX_DESCRIPTORS {
        display       "Maximum number of RX descriptors"
        flavor  data
        default_value { CYGPKG_REDBOOT ? 8 : 128 }
        define        MAX_RX_DESCRIPTORS
        description   "
                An RX descriptor is used for each ethernet frame required
                to be passed to the upper networking layers. This option
                sets the maximum number of these. Higher numbers use more
                memory, lower numbers will reduce performance. The system
                appears to work OK with as few as 8 descriptors but limps
                painfully with only 4. Performance is better with more than
                8, but assuming the size of non-cached (so useless for anything
                else) memory window is 1Mb, we might as well use it all.
                128 RX and TX descriptors uses the whole 1Mb, near enough."
    }
    
    cdl_option CYGNUM_DEVS_ETH_INTEL_I82544_MAX_TX_DESCRIPTORS {
        display       "Maximum number of TX descriptors"
        flavor  data
        default_value { CYGPKG_REDBOOT ? 8 : 128 }
        define        MAX_TX_DESCRIPTORS
        description   "
                A TX descriptor is used for each ethernet frame passed down
                from upper networking layers for transmission. This option
                sets the maximum number of these. Higher numbers use more
                memory, lower numbers will reduce performance. The system
                appears to work OK with as few as 8 descriptors but limps
                painfully with only 4. Performance is better with more than
                8, but assuming the size of non-cached (so useless for anything
                else) memory window is 1Mb, we might as well use it all.
                128 RX and TX descriptors uses the whole 1Mb, near enough."
    }

    cdl_component CYGPKG_DEVS_ETH_INTEL_I82544_OPTIONS {
        display "Intel 82544 ethernet driver build options"
        flavor  none
        no_define

        cdl_option CYGPKG_DEVS_ETH_INTEL_I82544_CFLAGS_ADD {
            display "Additional compiler flags"
            flavor  data
            no_define
            default_value { "-D_KERNEL -D__ECOS" }
            description   "
                This option modifies the set of compiler flags for
                building the Intel 82544 ethernet driver
                package. These flags are used in addition to the set of
                global flags."
        }
    }
}
# EOF intel_i82544_eth_drivers.cdl