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PD#SWPL-33277 Problem: reduce cache invalidate actions while doing bulk actions to improve the performance Solution: add ioctl to attach/detach dma fd Verify: on sm1/w400 Change-Id: Iea8fae9e483ff70044da748c78d8641c52a0c65d Signed-off-by: Cao Jian <jian.cao@amlogic.com> Signed-off-by: chunlong.cao <chunlong.cao@amlogic.com>