altera_msgdma with unaligned access: lost data and stuck busy

Hello Sheng,

sure. This is what the test outputs when it is working fine:

nios2-terminal: connected to hardware target using JTAG UART on cable
nios2-terminal: "USB-Blaster [USB-0]", device 1, instance 0
nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

DMA bugger

=== continuous loop ===

[dma_bugger] success = 999, fail = 0, setup time = 12517544, transfer time = 129804940
[dma_bugger] success = 1998, fail = 0, setup time = 12517515, transfer time = 129805544
[dma_bugger] success = 2997, fail = 0, setup time = 12521287, transfer time = 129805067
[dma_bugger] success = 3996, fail = 0, setup time = 12517509, transfer time = 129805073
[dma_bugger] success = 4995, fail = 0, setup time = 12521300, transfer time = 129804962
[dma_bugger] success = 5994, fail = 0, setup time = 12517506, transfer time = 129804818
[dma_bugger] success = 6993, fail = 0, setup time = 12518670, transfer time = 129805148
[dma_bugger] success = 7992, fail = 0, setup time = 12517509, transfer time = 129805062
[dma_bugger] success = 8991, fail = 0, setup time = 12517509, transfer time = 129805089
[dma_bugger] success = 9990, fail = 0, setup time = 12517512, transfer time = 129806820
[dma_bugger] success = 10989, fail = 0, setup time = 12518671, transfer time = 129804916
[dma_bugger] success = 11988, fail = 0, setup time = 12521309, transfer time = 129804786
[dma_bugger] success = 12987, fail = 0, setup time = 12517512, transfer time = 129805243
[dma_bugger] success = 13986, fail = 0, setup time = 12517509, transfer time = 129805216

Use the same elf as before, I have attached the Quartus project with the patch applied and built.

Thanks,

etome