| from m5.params import * |
| from m5.proxy import * |
| from MemObject import MemObject |
| |
| class PioDevice(MemObject): |
| type = 'PioDevice' |
| abstract = True |
| pio = Port("Programmed I/O port") |
| platform = Param.Platform(Parent.any, "Platform this device is part of") |
| system = Param.System(Parent.any, "System this device is part of") |
| |
| class BasicPioDevice(PioDevice): |
| type = 'BasicPioDevice' |
| abstract = True |
| pio_addr = Param.Addr("Device Address") |
| pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks") |
| |
| class DmaDevice(PioDevice): |
| type = 'DmaDevice' |
| abstract = True |
| dma = Port(Self.pio.peerObj.port, "DMA port") |
| |
| class IsaFake(BasicPioDevice): |
| type = 'IsaFake' |
| pio_size = Param.Addr(0x8, "Size of address range") |
| ret_data8 = Param.UInt8(0xFF, "Default data to return") |
| ret_data16 = Param.UInt16(0xFFFF, "Default data to return") |
| ret_data32 = Param.UInt32(0xFFFFFFFF, "Default data to return") |
| ret_data64 = Param.UInt64(0xFFFFFFFFFFFFFFFF, "Default data to return") |
| ret_bad_addr = Param.Bool(False, "Return pkt status bad address on access") |
| update_data = Param.Bool(False, "Update the data that is returned on writes") |
| warn_access = Param.String("", "String to print when device is accessed") |
| |
| class BadAddr(IsaFake): |
| ret_bad_addr = Param.Bool(True, "Return pkt status bad address on access") |
| |
| |
