89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/*
|
|
DingusPPC - The Experimental PowerPC Macintosh emulator
|
|
Copyright (C) 2018-22 divingkatae and maximum
|
|
(theweirdo) spatium
|
|
|
|
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** PSX Memory Controller definitions. */
|
|
|
|
#ifndef PSX_MEMCTRL_H
|
|
#define PSX_MEMCTRL_H
|
|
|
|
#include <devices/common/mmiodevice.h>
|
|
#include <devices/memctrl/memctrlbase.h>
|
|
|
|
#include <cinttypes>
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
namespace PsxReg {
|
|
enum {
|
|
Sys_Id = 0,
|
|
Revision = 1,
|
|
Sys_Config = 2,
|
|
ROM_Config = 3,
|
|
DRAM_Config = 4,
|
|
DRAM_Refresh = 5,
|
|
Flash_Config = 6,
|
|
Page1_Mapping = 8,
|
|
Page2_Mapping = 9,
|
|
Page3_Mapping = 10,
|
|
Page4_Mapping = 11,
|
|
Page5_Mapping = 12,
|
|
Bus_Timeout = 13
|
|
};
|
|
}; // namespace PsxReg
|
|
|
|
/** Bus (aka CPU) speed constants. */
|
|
enum {
|
|
PSX_BUS_SPEED_38 = 0, // bus frequency 38 MHz
|
|
PSX_BUS_SPEED_33 = 1, // bus frequency 33 MHz
|
|
PSX_BUS_SPEED_40 = 2, // bus frequency 40 MHz
|
|
PSX_BUS_SPEED_50 = 3, // bus frequency 50 MHz
|
|
};
|
|
|
|
class PsxCtrl : public MemCtrlBase, public MMIODevice {
|
|
public:
|
|
PsxCtrl(int bridge_num, std::string name);
|
|
~PsxCtrl() = default;
|
|
|
|
static std::unique_ptr<HWComponent> create() {
|
|
return std::unique_ptr<PsxCtrl>(new PsxCtrl(1, "PSX-PCI1"));
|
|
};
|
|
|
|
// MMIODevice methods
|
|
uint32_t read(uint32_t rgn_start, uint32_t offset, int size);
|
|
void write(uint32_t rgn_start, uint32_t offset, uint32_t value, int size);
|
|
|
|
void insert_ram_dimm(int slot_num, uint32_t capacity);
|
|
void map_phys_ram();
|
|
|
|
private:
|
|
uint32_t sys_id;
|
|
uint32_t chip_rev;
|
|
uint32_t sys_config;
|
|
uint32_t rom_cfg;
|
|
uint32_t dram_cfg;
|
|
uint32_t dram_refresh;
|
|
uint32_t flash_cfg;
|
|
uint32_t pages_cfg[5];
|
|
uint32_t bank_sizes[5] = {};
|
|
};
|
|
|
|
#endif // PSX_MEMCTRL_H
|