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- The BAM transaction is the core data structure which will be used
for all the data transfers in QPIC NAND. Since the core framework
in nand_base.c is serializing all the NAND requests so allocating
BAM transaction before every transfer will be overhead. The memory
for it be allocated during probe time and before every transfer,
it will be cleared.
- The BAM transaction contains the array of
command and data scatter gather list and indexes. For
every transfer, all the resource will be taken from BAM
transaction.
- The size of the buffer used for BAM transactions
is calculated based on the NAND device with the maximum page size,
among all the devices connected to the
controller.
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>