diff options
Diffstat (limited to 'libpsn00b/psxspu/transfer.s')
| -rw-r--r-- | libpsn00b/psxspu/transfer.s | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/libpsn00b/psxspu/transfer.s b/libpsn00b/psxspu/transfer.s deleted file mode 100644 index adcdb33..0000000 --- a/libpsn00b/psxspu/transfer.s +++ /dev/null @@ -1,108 +0,0 @@ -.set noreorder - -.include "hwregs_a.h" - - -.section .text - -.global SpuSetTransferMode -.type SpuSetTransferMode, @function -SpuSetTransferMode: - la $v0, _spu_transfer_mode - sb $a0, 0($v0) - jr $ra - move $v0, $a0 - - -.global SpuSetTransferStartAddr -.type SpuSetTransferStartAddr, @function -SpuSetTransferStartAddr: - li $v0, 0x1000 # Check if value is valid - blt $a0, $v0, .Lbad_value - nop - lui $v0, 8 # 0x7ffff = (8<<16)-1 - addiu $v0, -1 - bgt $a0, $v0, .Lbad_value - nop - - la $v1, _spu_transfer_addr - srl $v0, $a0, 3 # Set transfer destination address - sh $v0, 0($v1) - - jr $ra - move $v0, $a0 - -.Lbad_value: - jr $ra - move $v0, $0 - - -.global SpuWrite -.type SpuWrite, @function -SpuWrite: - addiu $sp, -8 - sw $ra, 0($sp) - sw $a0, 4($sp) - - lui $a3, IOBASE - - lhu $v0, SPU_CTRL($a3) # Set transfer mode to Stop - nop - andi $v0, 0xffcf - sh $v0, SPU_CTRL($a3) - jal SpuCtrlSync - move $a0, $v0 - - la $v1, _spu_transfer_addr # Set SPU write address - lhu $v1, 0($v1) - nop - sh $v1, SPU_ADDR($a3) - - lhu $v0, SPU_CTRL($a3) # Set transfer mode to DMA write - nop - ori $v0, 0x20 - sh $v0, SPU_CTRL($a3) - #jal SpuCtrlSync # Locks up on most emulators (bit 5 in - #move $a0, $v0 # SPUSTAT likely not updating, seems to - # be okay to not wait for it on real HW) - - lw $a0, 4($sp) - -.Ldma_wait: # Wait for SPU to be ready for DMA - lhu $v0, SPU_STAT($a3) - nop - andi $v0, 0x400 # Bit 8 in SPUSTAT never changes to 1 on - bnez $v0, .Ldma_wait # emulators so use bit 10 instead - nop - - sw $a0, DMA4_MADR($a3) # Set DMA source address - - li $v0, 0x10 # 16 words per block (64 bytes) - addiu $a1, 63 # Add by 63 to ensure all bytes get sent - srl $a1, 6 # Equivalent to divide by 64 - andi $a1, 0xffff - sll $a1, 16 - or $v0, $a1 - sw $v0, DMA4_BCR($a3) - - lui $v0, 0x0100 # Commence transfer - ori $v0, 0x0201 - sw $v0, DMA4_CHCR($a3) - - lw $ra, 0($sp) - addiu $sp, 8 - jr $ra - nop - - -.section .data - -.global _spu_transfer_mode -.type _spu_transfer_mode, @object -_spu_transfer_mode: - .word 0x0 - -.global _spu_transfer_addr -.type _spu_transfer_addr, @object -_spu_transfer_addr: - .word 0x200
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