118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Mupen64plus - rdram.c *
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* Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ *
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* Copyright (C) 2014 Bobby Smiles *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "usf/usf.h"
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#include "usf/usf_internal.h"
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#include "usf/barray.h"
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#include "rdram.h"
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#include "ri_controller.h"
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#include "memory/memory.h"
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#include <string.h>
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void connect_rdram(struct rdram* rdram,
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uint32_t* dram,
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size_t dram_size)
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{
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rdram->dram = dram;
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rdram->dram_size = dram_size;
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}
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void init_rdram(struct rdram* rdram)
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{
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memset(rdram->regs, 0, RDRAM_REGS_COUNT*sizeof(uint32_t));
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memset(rdram->dram, 0, rdram->dram_size);
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}
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int read_rdram_regs(void* opaque, uint32_t address, uint32_t* value)
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{
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struct ri_controller* ri = (struct ri_controller*)opaque;
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uint32_t reg = rdram_reg(address);
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*value = ri->rdram.regs[reg];
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return 0;
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}
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int write_rdram_regs(void* opaque, uint32_t address, uint32_t value, uint32_t mask)
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{
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struct ri_controller* ri = (struct ri_controller*)opaque;
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uint32_t reg = rdram_reg(address);
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masked_write(&ri->rdram.regs[reg], value, mask);
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return 0;
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}
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int read_rdram_dram(void* opaque, uint32_t address, uint32_t* value)
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{
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struct ri_controller* ri = (struct ri_controller*)opaque;
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uint32_t addr = rdram_dram_address(address);
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*value = ri->rdram.dram[addr];
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return 0;
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}
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int write_rdram_dram(void* opaque, uint32_t address, uint32_t value, uint32_t mask)
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{
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struct ri_controller* ri = (struct ri_controller*)opaque;
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uint32_t addr = rdram_dram_address(address);
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masked_write(&ri->rdram.dram[addr], value, mask);
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return 0;
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}
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int read_rdram_dram_tracked(void* opaque, uint32_t address, uint32_t* value)
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{
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usf_state_t* state = (usf_state_t*) opaque;
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struct ri_controller* ri = &state->g_ri;
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uint32_t addr = rdram_dram_address(address);
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if (!bit_array_test(state->barray_ram_written_first, addr))
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bit_array_set(state->barray_ram_read, addr);
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*value = ri->rdram.dram[addr];
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return 0;
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}
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int write_rdram_dram_tracked(void* opaque, uint32_t address, uint32_t value, uint32_t mask)
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{
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usf_state_t* state = (usf_state_t*) opaque;
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struct ri_controller* ri = &state->g_ri;
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uint32_t addr = rdram_dram_address(address);
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if (mask == 0xFFFFFFFFU && !bit_array_test(state->barray_ram_read, addr))
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bit_array_set(state->barray_ram_written_first, addr);
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masked_write(&ri->rdram.dram[addr], value, mask);
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return 0;
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}
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