102 lines
1.8 KiB
Python
102 lines
1.8 KiB
Python
from migen.fhdl.std import *
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from migen.genlib.record import *
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from migen.flow.actor import *
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primitives = {
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"ALIGN" : 0x7B4A4ABC,
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"CONT" : 0X9999AA7C,
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"SYNC" : 0xB5B5957C,
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"R_RDY" : 0x4A4A957C,
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"R_OK" : 0x3535B57C,
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"R_ERR" : 0x5656B57C,
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"R_IP" : 0X5555B57C,
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"X_RDY" : 0x5757B57C,
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"CONT" : 0x9999AA7C,
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"WTRM" : 0x5858B57C,
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"SOF" : 0x3737B57C,
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"EOF" : 0xD5D5B57C,
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"HOLD" : 0xD5D5AA7C,
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"HOLDA" : 0X9595AA7C
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}
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def is_primitive(dword):
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for k, v in primitives.items():
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if dword == v:
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return True
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return False
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def decode_primitive(dword):
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for k, v in primitives.items():
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if dword == v:
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return k
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return ""
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def ones(width):
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return 2**width-1
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def phy_layout(dw):
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layout = [
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("data", dw),
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("charisk", dw//8),
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]
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return EndpointDescription(layout, packetized=False)
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def link_layout(dw):
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layout = [
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("d", dw),
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("error", 1)
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]
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return EndpointDescription(layout, packetized=True)
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def transport_tx_layout(dw):
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layout = [
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("type", 8),
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("pm_port", 4),
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("c", 1),
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("command", 8),
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("features", 16),
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("lba", 48),
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("device", 8),
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("count", 16),
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("icc", 8),
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("control", 8),
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("data", dw)
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]
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return EndpointDescription(layout, packetized=True)
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def transport_rx_layout(dw):
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layout = [
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("type", 8),
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("pm_port", 4),
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("i", 1),
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("status", 8),
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("error", 8),
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("lba", 48),
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("device", 8),
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("count", 16),
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("data", dw)
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]
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return EndpointDescription(layout, packetized=True)
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def command_tx_layout(dw):
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layout = [
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("write", 1),
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("read", 1),
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("identify", 1),
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("address", 32),
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("length", 32),
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("data", dw)
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]
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return EndpointDescription(layout, packetized=True)
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def command_rx_layout(dw):
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layout = [
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("write", 1),
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("read", 1),
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("identify", 1),
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("success", 1),
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("failed", 1),
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("data", dw)
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]
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return EndpointDescription(layout, packetized=True)
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