diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/memmap.cpp | 87 | ||||
| -rw-r--r-- | source/nds/dma_adj.h | 1 |
2 files changed, 80 insertions, 8 deletions
diff --git a/source/memmap.cpp b/source/memmap.cpp index 755f7a0..20110f9 100644 --- a/source/memmap.cpp +++ b/source/memmap.cpp @@ -113,6 +113,12 @@ #include "unzip/unzip.h" +#ifdef DS2_DMA +#include "ds2_cpu.h" +#include "ds2_dma.h" +#include "dma_adj.h" +#endif + #ifdef __W32_HEAP #include <malloc.h> #endif @@ -414,7 +420,11 @@ bool8 CMemory::Init () RAM = (uint8 *) malloc (0x20000); SRAM = (uint8 *) malloc (0x20000); VRAM = (uint8 *) malloc (0x10000); +#ifdef DS2_DMA + ROM = (uint8 *) AlignedMalloc (MAX_ROM_SIZE + 0x200 + 0x8000, 32, &PtrAdj.ROM); +#else ROM = (uint8 *) malloc (MAX_ROM_SIZE + 0x200 + 0x8000); +#endif memset (RAM, 0, 0x20000); memset (SRAM, 0, 0x20000); memset (VRAM, 0, 0x10000); @@ -451,9 +461,9 @@ bool8 CMemory::Init () // Add 0x8000 to ROM image pointer to stop SuperFX code accessing // unallocated memory (can cause crash on some ports). - ROM += 0x8000; + ROM += 0x8000; // still 32-byte aligned - C4RAM = ROM + 0x400000 + 8192 * 8; + C4RAM = ROM + 0x400000 + 8192 * 8; // still 32-byte aligned ::ROM = ROM; ::SRAM = SRAM; ::RegRAM = FillRAM; @@ -468,7 +478,6 @@ bool8 CMemory::Init () SuperFX.pvRom = (uint8 *) ROM; #endif - // DS2 DMA notes: Can this be sped up with DMA from a block of zeroes? [Neb] ZeroMemory (IPPU.TileCache [TILE_2BIT], MAX_2BIT_TILES * 128); ZeroMemory (IPPU.TileCache [TILE_4BIT], MAX_4BIT_TILES * 128); ZeroMemory (IPPU.TileCache [TILE_8BIT], MAX_8BIT_TILES * 128); @@ -508,7 +517,11 @@ void CMemory::Deinit () if (ROM) { ROM -= 0x8000; +#ifdef DS2_RAM + AlignedFree ((char *) ROM, PtrAdj.ROM); +#else free ((char *) ROM); +#endif ROM = NULL; } @@ -642,9 +655,21 @@ again: ((hi_score > lo_score && ScoreHiROM (TRUE) > hi_score) || (hi_score <= lo_score && ScoreLoROM (TRUE) > lo_score))) { +#ifdef DS2_DMA + __dcache_writeback_all(); + { + unsigned int i; + for (i = 0; i < TotalFileSize; i += 512) + { + ds2_DMAcopy_32Byte (2 /* channel: emu internal */, Memory.ROM + i, Memory.ROM + i + 512, 512); + ds2_DMA_wait(2); + ds2_DMA_stop(2); + } + } +#else // memmove required: Overlapping addresses [Neb] - // DS2 DMA notes: Can be split into 512-byte DMA blocks [Neb] memmove (Memory.ROM, Memory.ROM + 512, TotalFileSize - 512); +#endif TotalFileSize -= 512; S9xMessage (S9X_INFO, S9X_HEADER_WARNING, "Try specifying the -nhd command line option if the game doesn't work\n"); @@ -653,7 +678,7 @@ again: orig_lo_score = lo_score = ScoreLoROM (FALSE); } - CalculatedSize = (TotalFileSize / 0x2000) * 0x2000; + CalculatedSize = TotalFileSize & ~0x1FFF; // round down to lower 0x2000 ZeroMemory (ROM + CalculatedSize, MAX_ROM_SIZE - CalculatedSize); if(CalculatedSize >0x400000&& @@ -961,7 +986,20 @@ uint32 CMemory::FileLoader (uint8* buffer, const char* filename, int32 maxsize) { // memmove required: Overlapping addresses [Neb] // DS2 DMA notes: Can be split into 512-byte DMA blocks [Neb] +#ifdef DS2_DMA + __dcache_writeback_all(); + { + unsigned int i; + for (i = 0; i < calc_size; i += 512) + { + ds2_DMAcopy_32Byte (2 /* channel: emu internal */, ptr + i, ptr + i + 512, 512); + ds2_DMA_wait(2); + ds2_DMA_stop(2); + } + } +#else memmove (ptr, ptr + 512, calc_size); +#endif HeaderCount++; FileSize -= 512; } @@ -1203,25 +1241,47 @@ void S9xDeinterleaveType2 (bool8 reset) ((i & 12) >> 2); } - // DS2 DMA notes: ROM needs to be 32-byte aligned [Neb] +#ifdef DS2_DMA + unsigned int TmpAdj; + uint8 *tmp = (uint8 *) AlignedMalloc (0x10000, 32, &TmpAdj); +#else uint8 *tmp = (uint8 *) malloc (0x10000); +#endif if (tmp) { +#ifdef DS2_DMA + __dcache_writeback_all(); +#endif for (i = 0; i < nblocks * 2; i++) { for (int j = i; j < nblocks * 2; j++) { if (blocks [j] == i) { +#ifdef DS2_DMA + ds2_DMAcopy_32Byte (2 /* channel: emu internal */, tmp, &Memory.ROM [blocks [j] * 0x10000], 0x10000); + ds2_DMA_wait(2); + ds2_DMA_stop(2); + + ds2_DMAcopy_32Byte (2 /* channel: emu internal */, &Memory.ROM [blocks [j] * 0x10000], + &Memory.ROM [blocks [i] * 0x10000], 0x10000); + ds2_DMA_wait(2); + ds2_DMA_stop(2); + + ds2_DMAcopy_32Byte (2 /* channel: emu internal */, &Memory.ROM [blocks [i] * 0x10000], tmp, 0x10000); + ds2_DMA_wait(2); + ds2_DMA_stop(2); +#else // memmove converted: Different mallocs [Neb] memcpy (tmp, &Memory.ROM [blocks [j] * 0x10000], 0x10000); + // memmove converted: Different addresses, or identical if blocks[i] == blocks[j] [Neb] - // DS2 DMA notes: Don't do DMA at all if blocks[i] == blocks[j] [Neb] memcpy (&Memory.ROM [blocks [j] * 0x10000], &Memory.ROM [blocks [i] * 0x10000], 0x10000); // memmove converted: Different mallocs [Neb] memcpy (&Memory.ROM [blocks [i] * 0x10000], tmp, 0x10000); +#endif uint8 b = blocks [j]; blocks [j] = blocks [i]; blocks [i] = b; @@ -1633,7 +1693,6 @@ bool8 CMemory::LoadSRAM (const char *filename) { // S-RAM file has a header - remove it // memmove required: Overlapping addresses [Neb] - // DS2 DMA notes: Can be split into 512-byte DMA blocks [Neb] memmove (::SRAM, ::SRAM + 512, size); } if (len == size + SRTC_SRAM_PAD) @@ -2573,12 +2632,24 @@ void CMemory::SuperFXROMMap () // Replicate the first 2Mb of the ROM at ROM + 2MB such that each 32K // block is repeated twice in each 64K block. +#ifdef DS2_DMA + __dcache_writeback_all(); +#endif for (c = 0; c < 64; c++) { +#ifdef DS2_DMA + ds2_DMAcopy_32Byte(2 /* channel: emu internal */, &ROM [0x200000 + c * 0x10000], &ROM [c * 0x8000], 0x8000); + ds2_DMAcopy_32Byte(3 /* channel: emu internal 2 */, &ROM [0x208000 + c * 0x10000], &ROM [c * 0x8000], 0x8000); + ds2_DMA_wait(2); + ds2_DMA_wait(3); + ds2_DMA_stop(2); + ds2_DMA_stop(3); +#else // memmove converted: Different addresses [Neb] memcpy (&ROM [0x200000 + c * 0x10000], &ROM [c * 0x8000], 0x8000); // memmove converted: Different addresses [Neb] memcpy (&ROM [0x208000 + c * 0x10000], &ROM [c * 0x8000], 0x8000); +#endif } WriteProtectROM (); diff --git a/source/nds/dma_adj.h b/source/nds/dma_adj.h index dd4a6e4..3852f09 100644 --- a/source/nds/dma_adj.h +++ b/source/nds/dma_adj.h @@ -12,6 +12,7 @@ struct SPointerAdjustments { unsigned int GFXScreen; /* These are used by Snes9x. */ + unsigned int ROM; }; extern struct SPointerAdjustments PtrAdj; |