From: Florent Kermarrec Date: Fri, 5 Dec 2014 00:13:55 +0000 (+0100) Subject: bfm: add FIS decoding/encoding X-Git-Tag: 24jan2021_ls180~2572^2~151 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6f96338962566382af2ce086c7501940a40442ab;p=litex.git bfm: add FIS decoding/encoding --- diff --git a/lib/sata/link/test/bfm.py b/lib/sata/link/test/bfm.py index 09e20be1..f6791460 100644 --- a/lib/sata/link/test/bfm.py +++ b/lib/sata/link/test/bfm.py @@ -4,6 +4,7 @@ from migen.fhdl.std import * from lib.sata.std import * from lib.sata.link.test.common import * +from lib.sata.transport.std import * class PHYDword: def __init__(self, dat=0): @@ -129,12 +130,6 @@ class LinkTXPacket(LinkPacket): crc = int(out.decode("ASCII"), 16) self.append(crc) -def transport_callback(packet): - print("----") - for v in packet: - print("%08x" %v) - print("----") - class LinkLayer(Module): def __init__(self, phy, debug, hold_random_level=0): self.phy = phy @@ -144,6 +139,11 @@ class LinkLayer(Module): self.rx_packet = LinkRXPacket() self.rx_cont = False + self.transport_callback = None + + def set_transport_callback(self, callback): + self.transport_callback = callback + def callback(self, dword): if dword == primitives["CONT"]: self.rx_cont = True @@ -161,7 +161,8 @@ class LinkLayer(Module): elif dword == primitives["EOF"]: self.rx_packet.decode() - transport_callback(self.rx_packet) + if self.transport_callback is not None: + self.transport_callback(self.rx_packet) self.rx_packet.ongoing = False elif self.rx_packet.ongoing: @@ -188,8 +189,120 @@ class LinkLayer(Module): yield from self.phy.receive() self.callback(self.phy.rx.dword.dat) +def get_field_data(field, packet): + return (packet[field.dword] >> field.offset) & (2**field.width-1) + +class FIS: + def __init__(self, packet, layout): + self.packet = packet + self.layout = layout + self.decode() + + def decode(self): + for k, v in self.layout.items(): + setattr(self, k, get_field_data(v, self.packet)) + + def encode(self): + for k, v in self.layout.items(): + self.packet[v.dword] |= (getattr(self, k) << v.offset) + + def __repr__(self): + r = "--------\n" + for k in sorted(self.layout.keys()): + r += k + " : 0x%x" %getattr(self,k) + "\n" + return r + +class FIS_REG_H2D(FIS): + def __init__(self, packet=[0]*fis_reg_h2d_len): + FIS.__init__(self, packet,fis_reg_h2d_layout) + + def __repr__(self): + r = "FIS_REG_H2D\n" + r += FIS.__repr__(self) + return r + +class FIS_REG_D2H(FIS): + def __init__(self, packet=[0]*fis_reg_d2h_len): + FIS.__init__(self, packet,fis_reg_d2h_layout) + + def __repr__(self): + r = "FIS_REG_D2H\n" + r += FIS.__repr__(self) + return r + +class FIS_DMA_ACTIVATE_D2H(FIS): + def __init__(self, packet=[0]*fis_dma_activate_d2h_len): + FIS.__init__(self, packet,fis_dma_activate_d2h_layout) + + def __repr__(self): + r = "FIS_DMA_ACTIVATE_D2H\n" + r += FIS.__repr__(self) + return r + +class FIS_DMA_SETUP(FIS): + def __init__(self, packet=[0]*fis_dma_setup_len): + FIS.__init__(self, packet,fis_dma_setup_layout) + + def __repr__(self): + r = "FIS_DMA_SETUP\n" + r += FIS.__repr__(self) + return r + +class FIS_DATA(FIS): + def __init__(self, packet=[0]): + FIS.__init__(self, packet,fis_data_layout) + + def __repr__(self): + r = "FIS_DATA\n" + r += FIS.__repr__(self) + return r + +class FIS_PIO_SETUP_D2H(FIS): + def __init__(self, packet=[0]*fis_pio_setup_d2h_len): + FIS.__init__(self, packet,fis_pio_setup_d2h_layout) + + def __repr__(self): + r = "FIS_PIO_SETUP\n" + r += FIS.__repr__(self) + return r + +class FIS_UNKNOWN(FIS): + def __init__(self, packet=[0]): + FIS.__init__(self, packet, {}) + + def __repr__(self): + r = "UNKNOWN\n" + r += "--------\n" + for dword in self.packet: + r += "%08x\n" %dword + return r + +class TransportLayer(Module): + def __init__(self, link): + pass + + def callback(self, packet): + fis_type = packet[0] + if fis_type == fis_types["REG_H2D"]: + fis = FIS_REG_H2D(packet) + elif fis_type == fis_types["REG_D2H"]: + fis = FIS_REG_D2H(packet) + elif fis_type == fis_types["DMA_ACTIVATE_D2H"]: + fis = FIS_DMA_ACTIVATE_D2H(packet) + elif fis_type == fis_types["DMA_SETUP"]: + fis = FIS_SETUP(packet) + elif fis_type == fis_types["DATA"]: + fis = FIS_DATA(packet) + elif fis_type == fis_types["PIO_SETUP_D2H"]: + fis = FIS_PIO_SETUP_D2H(packet) + else: + fis = FIS_UNKNOWN(packet) + print(fis) + class BFM(Module): def __init__(self, dw, debug=False, hold_random_level=0): ### self.submodules.phy = PHYLayer(debug) self.submodules.link = LinkLayer(self.phy, debug, hold_random_level) + self.submodules.transport = TransportLayer(self.link) + self.link.set_transport_callback(self.transport.callback)