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# ====================================================================
#
#      cl_cs8900a_eth_drivers.cdl
#
#      Ethernet driver for Cirrus Logic CS8900A controller
#
# ====================================================================
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# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      gthomas
# Contributors:   gthomas, jskov
# Date:           2001-11-02
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_DEVS_ETH_CL_CS8900A {
    display       "Driver for Cirrus Logic CS8900A ethernet controller."

    parent        CYGPKG_IO_ETH_DRIVERS
    active_if     CYGPKG_IO_ETH_DRIVERS

    implements    CYGHWR_NET_DRIVERS
    implements    CYGINT_IO_ETH_MULTICAST

    active_if     CYGINT_DEVS_ETH_CL_CS8900A_REQUIRED

    include_dir   cyg/io
    description   "Driver for Cirrus Logic CS8900A ethernet controller."
    compile       -library=libextras.a if_cs8900a.c

    define_proc {
        puts $::cdl_header "#include <pkgconf/system.h>";
        puts $::cdl_header "#include CYGDAT_DEVS_ETH_CL_CS8900A_CFG";
    }

    cdl_option CYGSEM_DEVS_ETH_CL_CS8900A_WRITE_EEPROM {
        display "SIOCSIFHWADDR records ESA (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 Station
            Address (ESA).  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 CYGIMP_DEVS_ETH_CL_CS8900A_DATABUS_8BIT {
        display "8-bit data bus"
        flavor        bool
        requires      !CYGSEM_DEVS_ETH_CL_CS8900A_WRITE_EEPROM
        requires      CYGSEM_DEVS_ETH_CL_CS8900A_NOINTS
        default_value 0
        description   "
            The CS8900A can been use in 8-bit mode. From AN181 from
            Cirrus Logic... Unsupported functions in 8-bit mode:
            Interrupts are not supported. Polled mode must be used;
            The DMA engine only uses 16 bit memory access and does not
            support 8 bit transfers; The packet page pointer has an
            auto increment feature that cannot be used in 8-bit mode;
            An EEPROM is not supported."
    }

    cdl_option CYGIMP_DEVS_ETH_CL_CS8900A_DATABUS_BYTE_SWAPPED {
        display "Byte swapped data bus"
        flavor  bool
        default_value 0
        description   "
                    From the application note AN205 from Cirrus Logic ...The CS8900a
                        assumes a litte-endian ISA type system. However, network byte order
                        is always big-endian.Therefore to minimize software manipulation of
                        frame data in ISA systems, the CS8900 byte-swaps frame data
                        internally. The control and status registers are not byte-swapped.
                        In a big-endian system you can either byte-swap the network data
                        (to reverse the byte swapping done internally to the CS8900) in
                        software or you can do it in hardware (byte swap the data lines to
                        the chip). Byte swapping the data lines is much more efficient; you
                will only need to byte swap the control/status/counter values in
                        software and not the frame data. (Most of the read/writes to the chip
                        are frame data.) Since network byte order is always big endian, this
                    scheme works without special support on the other end of the network...
                        Normally, you won't need to check this option unless you are using a
                        CS8900a ethernet controller with a big endian machine and hardware
                        that has been designed with the cs8900a in mind."
    }

    cdl_component CYGPKG_DEVS_ETH_CL_CS8900A_OPTIONS {
        display "Cirrus Logic ethernet driver build options"
        flavor  none
        no_define

        cdl_option CYGPKG_DEVS_ETH_CL_CS8900A_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 Cirrus Logic ethernet driver package.
                These flags are used in addition
                to the set of global flags."
        }
    }
}