// license:BSD-3-Clause // copyright-holders:Olivier Galibert // handler_entry_write_dispatch // dispatches an access among multiple handlers indexed on part of the address template class handler_entry_write_dispatch : public handler_entry_write { public: using uX = typename handler_entry_size::uX; using inh = handler_entry_write; using mapping = typename inh::mapping; handler_entry_write_dispatch(address_space *space, const handler_entry::range &init, handler_entry_write *handler); ~handler_entry_write_dispatch(); void write(offs_t offset, uX data, uX mem_mask) override; void *get_ptr(offs_t offset) const override; void lookup(offs_t address, offs_t &start, offs_t &end, handler_entry_write *&handler) const override; void dump_map(std::vector &map) const override; std::string name() const override; void populate_nomirror(offs_t start, offs_t end, offs_t ostart, offs_t oend, handler_entry_write *handler) override; void populate_mirror(offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, handler_entry_write *handler) override; void populate_mismatched_nomirror(offs_t start, offs_t end, offs_t ostart, offs_t oend, const memory_units_descriptor &descriptor, u8 rkey, std::vector &mappings) override; void populate_mismatched_mirror(offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, const memory_units_descriptor &descriptor, std::vector &mappings) override; void populate_passthrough_nomirror(offs_t start, offs_t end, offs_t ostart, offs_t oend, handler_entry_write_passthrough *handler, std::vector &mappings) override; void populate_passthrough_mirror(offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, handler_entry_write_passthrough *handler, std::vector &mappings) override; void detach(const std::unordered_set &handlers) override; void range_cut_before(offs_t address, int start = COUNT); void range_cut_after(offs_t address, int start = -1); void enumerate_references(handler_entry::reflist &refs) const override; protected: static constexpr u32 LowBits = handler_entry_dispatch_lowbits(HighBits, Width, AddrShift); static constexpr u32 BITCOUNT = HighBits > LowBits ? HighBits - LowBits : 0; static constexpr u32 COUNT = 1 << BITCOUNT; static constexpr offs_t BITMASK = make_bitmask(BITCOUNT); static constexpr offs_t LOWMASK = make_bitmask(LowBits); static constexpr offs_t HIGHMASK = make_bitmask(HighBits) ^ LOWMASK; static constexpr offs_t UPMASK = ~make_bitmask(HighBits); handler_entry_write *m_dispatch[COUNT]; handler_entry::range m_ranges[COUNT]; private: void populate_nomirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, handler_entry_write *handler); void populate_mirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, handler_entry_write *handler); void populate_mismatched_nomirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, const memory_units_descriptor &descriptor, u8 rkey, std::vector &mappings); void populate_mismatched_mirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, const memory_units_descriptor &descriptor, std::vector &mappings); void mismatched_patch(const memory_units_descriptor &descriptor, u8 rkey, std::vector &mappings, handler_entry_write *&target); void populate_passthrough_nomirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, handler_entry_write_passthrough *handler, std::vector &mappings); void populate_passthrough_mirror_subdispatch(offs_t entry, offs_t start, offs_t end, offs_t ostart, offs_t oend, offs_t mirror, handler_entry_write_passthrough *handler, std::vector &mappings); void passthrough_patch(handler_entry_write_passthrough *handler, std::vector &mappings, handler_entry_write *&target); };