/*************************************************************************** dimemory.h Device memory interfaces. **************************************************************************** Copyright Aaron Giles All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name 'MAME' nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ***************************************************************************/ #pragma once #ifndef __EMU_H__ #error Dont include this file directly; include emu.h instead. #endif #ifndef __DIMEMORY_H__ #define __DIMEMORY_H__ //************************************************************************** // CONSTANTS //************************************************************************** // the configuration for a general device enum device_space { AS_PROGRAM = 0, AS_DATA = 1, AS_IO = 2 }; // Translation intentions const int TRANSLATE_TYPE_MASK = 0x03; // read write or fetch const int TRANSLATE_USER_MASK = 0x04; // user mode or fully privileged const int TRANSLATE_DEBUG_MASK = 0x08; // debug mode (no side effects) const int TRANSLATE_READ = 0; // translate for read const int TRANSLATE_WRITE = 1; // translate for write const int TRANSLATE_FETCH = 2; // translate for instruction fetch const int TRANSLATE_READ_USER = (TRANSLATE_READ | TRANSLATE_USER_MASK); const int TRANSLATE_WRITE_USER = (TRANSLATE_WRITE | TRANSLATE_USER_MASK); const int TRANSLATE_FETCH_USER = (TRANSLATE_FETCH | TRANSLATE_USER_MASK); const int TRANSLATE_READ_DEBUG = (TRANSLATE_READ | TRANSLATE_DEBUG_MASK); const int TRANSLATE_WRITE_DEBUG = (TRANSLATE_WRITE | TRANSLATE_DEBUG_MASK); const int TRANSLATE_FETCH_DEBUG = (TRANSLATE_FETCH | TRANSLATE_DEBUG_MASK); //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MDRV_DEVICE_ADDRESS_MAP(_space, _map) \ TOKEN_UINT32_PACK2(MCONFIG_TOKEN_DIMEMORY_MAP, 8, _space, 8), \ TOKEN_PTR(addrmap, (address_map_constructor)ADDRESS_MAP_NAME(_map)), #define MDRV_DEVICE_PROGRAM_MAP(_map) \ MDRV_DEVICE_ADDRESS_MAP(AS_PROGRAM, _map) #define MDRV_DEVICE_DATA_MAP(_map) \ MDRV_DEVICE_ADDRESS_MAP(AS_DATA, _map) #define MDRV_DEVICE_IO_MAP(_map) \ MDRV_DEVICE_ADDRESS_MAP(AS_IO, _map) //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> address_space_config class address_space_config { public: address_space_config(); address_space_config(const char *name, endianness_t endian, UINT8 datawidth, UINT8 addrwidth, INT8 addrshift = 0, address_map_constructor internal = NULL, address_map_constructor defmap = NULL); address_space_config(const char *name, endianness_t endian, UINT8 datawidth, UINT8 addrwidth, INT8 addrshift, UINT8 logwidth, UINT8 pageshift, address_map_constructor internal = NULL, address_map_constructor defmap = NULL); inline offs_t addr2byte(offs_t address) const { return (m_addrbus_shift < 0) ? (address << -m_addrbus_shift) : (address >> m_addrbus_shift); } inline offs_t addr2byte_end(offs_t address) const { return (m_addrbus_shift < 0) ? ((address << -m_addrbus_shift) | ((1 << -m_addrbus_shift) - 1)) : (address >> m_addrbus_shift); } inline offs_t byte2addr(offs_t address) const { return (m_addrbus_shift > 0) ? (address << m_addrbus_shift) : (address >> -m_addrbus_shift); } inline offs_t byte2addr_end(offs_t address) const { return (m_addrbus_shift > 0) ? ((address << m_addrbus_shift) | ((1 << -m_addrbus_shift) - 1)) : (address >> -m_addrbus_shift); } const char * m_name; endianness_t m_endianness; UINT8 m_databus_width; UINT8 m_addrbus_width; INT8 m_addrbus_shift; UINT8 m_logaddr_width; UINT8 m_page_shift; address_map_constructor m_internal_map; address_map_constructor m_default_map; }; // ======================> device_config_memory_interface // class representing interface-specific configuration state class device_config_memory_interface : public device_config_interface { friend class device_memory_interface; public: // construction/destruction device_config_memory_interface(const machine_config &mconfig, device_config &devconfig); virtual ~device_config_memory_interface(); // basic information getters address_map_constructor address_map(int spacenum = 0) const { return (spacenum < ARRAY_LENGTH(m_address_map)) ? m_address_map[spacenum] : NULL; } const address_space_config *space_config(int spacenum = 0) const { return memory_space_config(spacenum); } protected: // required overrides virtual const address_space_config *memory_space_config(int spacenum) const = 0; // optional operation overrides virtual bool interface_process_token(UINT32 entrytype, const machine_config_token *&tokens); virtual bool interface_validity_check(const game_driver &driver) const; address_map_constructor m_address_map[ADDRESS_SPACES]; // address maps for each address space }; // ======================> device_memory_interface class device_memory_interface : public device_interface { friend class device_scheduler; public: // construction/destruction device_memory_interface(running_machine &machine, const device_config &config, device_t &device); virtual ~device_memory_interface(); // configuration access const device_config_memory_interface &memory_config() const { return m_memory_config; } // basic information getters const address_space_config *space_config(int spacenum = 0) const { return m_memory_config.space_config(spacenum); } const address_space *space(int index = 0) const { return m_addrspace[index]; } const address_space *space(device_space index) const { return m_addrspace[static_cast(index)]; } // address space accessors void set_address_space(int spacenum, const address_space *space); // address translation bool translate(int spacenum, int intention, offs_t &address) { return memory_translate(spacenum, intention, address); } // read/write access bool read(int spacenum, offs_t offset, int size, UINT64 &value) { return memory_read(spacenum, offset, size, value); } bool write(int spacenum, offs_t offset, int size, UINT64 value) { return memory_write(spacenum, offset, size, value); } bool readop(offs_t offset, int size, UINT64 &value) { return memory_readop(offset, size, value); } protected: // optional operation overrides virtual bool memory_translate(int spacenum, int intention, offs_t &address); virtual bool memory_read(int spacenum, offs_t offset, int size, UINT64 &value); virtual bool memory_write(int spacenum, offs_t offset, int size, UINT64 value); virtual bool memory_readop(offs_t offset, int size, UINT64 &value); // interface-level overrides // configuration const device_config_memory_interface &m_memory_config; // reference to our device_config_execute_interface const address_space * m_addrspace[ADDRESS_SPACES]; // reported address spaces }; //************************************************************************** // INLINE HELPERS //************************************************************************** //------------------------------------------------- // device_memory - return a pointer to the device // memory interface for this device //------------------------------------------------- inline device_memory_interface *device_memory(device_t *device) { device_memory_interface *intf; if (!device->interface(intf)) throw emu_fatalerror("Device '%s' does not have memory interface", device->tag()); return intf; } //------------------------------------------------- // device_get_space - return a pointer to the // given address space on this device //------------------------------------------------- inline const address_space *device_get_space(device_t *device, int spacenum = 0) { return device_memory(device)->space(spacenum); } //------------------------------------------------- // devconfig_get_space_config - return a pointer // to sthe given address space's configuration //------------------------------------------------- inline const address_space_config *devconfig_get_space_config(const device_config &devconfig, int spacenum = 0) { const device_config_memory_interface *intf; if (!devconfig.interface(intf)) throw emu_fatalerror("Device '%s' does not have memory interface", devconfig.tag()); return intf->space_config(spacenum); } #endif /* __DIMEMORY_H__ */