src/dev/arm/UFSHostDevice.py

# Copyright (c) 2013-2015 ARM Limited
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# Authors: Rene de Jong
#
import sys
from m5.params import *
from m5.proxy import *
from Device import DmaDevice
from AbstractNVM import *

class UFSHostDevice(DmaDevice):
    type = 'UFSHostDevice'
    cxx_header = "dev/arm/ufs_device.hh"
    pio_addr = Param.Addr("Address for SCSI configuration slave interface")
    pio_latency = Param.Latency("10ns", "Time between action and write/read \
       result by AMBA DMA Device")
    gic = Param.BaseGic(Parent.any, "Gic to use for interrupting")
    int_num = Param.UInt32("Interrupt number that connects to GIC")
    img_blk_size = Param.UInt32(512, "Size of one image block in bytes")
    # Every image that is added to the vector will generate a new logic unit
    # in the UFS device; Theoretically (when using the driver from Linux
    # kernel 3.9 onwards), this can be as many as eigth. Up to two have been
    # tested.
    image = VectorParam.DiskImage("Disk images")
    # Every logic unit can have its own flash dimensions. So the number of
    # images that have been provided in the image vector, should be equal to
    # the number of flash objects that are created. Each logic unit can have
    # its own flash dimensions; to allow the system to define a hetrogeneous
    # storage system.
    internalflash = VectorParam.AbstractNVM("Describes the internal flash")
    ufs_slots = Param.UInt32(32, "Number of commands that can be queued in \
        the Host controller (min: 1, max: 32)")