24 lines
700 B
Python
24 lines
700 B
Python
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from migen.fhdl.std import Module, bits_for
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from migen.bank.description import CSR
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class GenericBank(Module):
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def __init__(self, description, busword):
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# Turn description into simple CSRs and claim ownership of compound CSR modules
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self.simple_csrs = []
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for c in description:
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if isinstance(c, CSR):
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self.simple_csrs.append(c)
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else:
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c.finalize(busword)
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self.simple_csrs += c.get_simple_csrs()
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self.submodules += c
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self.decode_bits = bits_for(len(self.simple_csrs)-1)
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def get_offset(description, name, busword):
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offset = 0
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for c in description:
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if c.name == name:
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return offset
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offset += (c.size + busword - 1)//busword
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raise KeyError("CSR not found: "+name)
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