xdma_rw user write error in 32bits windows system

[yachli]

xdma + AR65444 runs well in 64bits windows system, but in 32bits windows it cannot work with "xdma_rw user write ..." command,

The problem is that the latest write command always get a result of the last command.

32 bits windows run badly:

xdma_rw user write 0x04 0x11 (nothing happen)

xdma_rw user write 0x04 0x12 (bram got 0x11)

xdma_rw user write 0x04 0x13 (bram got 0x12)

xdma_rw user write 0x04 0x14 (bram got 0x13)

64 bits windows run well :

xdma_rw user write 0x04 0x11 (bram got 0x11)

xdma_rw user write 0x04 0x12 (bram got 0x12)

xdma_rw user write 0x04 0x13 (bram got 0x13)

xdma_rw user write 0x04 0x14 (bram got 0x14)

what's the possibile cause? thanks

[yachli]

xdma_rw user write 0x04 0x11 0x22 0x33 0x50

above is 64bit well worked , 

below is 32bits work badly, data come late 1 clock with bram_en

[yachli]

and XDMA core axi lite master is 32 bits

[bethe]

Hi @yachli,

Per the documentation, the Windows driver source is compiled for a 64-bit Windows operating system only.   You could follow the directions in the AR for Windows source, and make modifications to the driver to restrict it to 32-bit only, and recompile, but this is not expected to function on a 32-bit system.

[yachli]

thanks for your reply.

Yes, I did recompiled the driver source to compatible with 32bit windows . Investigation show that driver had send data to hardware correctly and vivado also got it(above pic), Unfortunately it is one clock late than expect.