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integration/export/get_csr_header: don't generate replace/write fields access functions when CSR is read only.

This commit is contained in:
Florent Kermarrec 2020-12-14 10:51:37 +01:00
parent 649edd189a
commit bc2b7995f5
1 changed files with 1 additions and 1 deletions
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2
litex/soc/integration/export.py
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@ -237,7 +237,7 @@ def get_csr_header(regions, constants, csr_base=None, with_access_functions=True
r += "\tuint32_t word = " + reg_name + "_read();\n"
r += "\treturn " + field_name + "_extract(word);\n"
r += "}\n"
if (reg_name + "_write") in r:
if not getattr(csr, "read_only", False):
r += "static inline uint32_t " + field_name + "_replace(uint32_t oldword, uint32_t plain_value) {\n"
r += "\tuint32_t mask = ((1 << " + size + ")-1);\n"
r += "\treturn (oldword & (~(mask << " + offset + "))) | (mask & plain_value)<< " + offset + " ;\n}\n"